US20200196523A1 - Mower - Google Patents

Abstract

The present invention relates to a mower, comprising a cutting mechanism, configured to execute a cutting operation; a machine body, wherein the machine body is connected with a side part protection which is located in the side of the cutting mechanism to establish a protection barrier in the side of the cutting mechanism; and a bottom protection, located below the cutting mechanism to establish a protection barrier below the cutting mechanism, wherein the bottom protection is provided with a grass inlet. According to the above mower, a human body is prevented from making contact with the cutting mechanism from the side direction of the cutting mechanism, the bottom protection can prevent the human body from making contact with the cutting mechanism from the lower side of the cutting mechanism, and the bottom protection is provided with a grass inlet, such that the cutting can be smoothly performed; due to the arrangement of the bottom protection, the side part protection and cutting mechanism can be set to approach to the outer side of the mower as much as possible, thereby realizing the cutting of the edge of a lawn, and meeting the cutting and safety requirements at the same time.

Description

TECHNICAL FIELD
• The present invention relates to the field of gardening tools, and in particular, to a mower.
BACKGROUND
• Along with continuous advancement of computer technologies and artificial intelligence technologies, an intelligent mower similar to an intelligent robot begins to slowly emerge in people's life. The intelligent mower can automatically mow grass and charge in the lawn of a user without user intervention. Such automatic working system needs no more energy investment for management after setting for one time, and the user is liberated from dull, time-consuming and labor-consuming household works such as cleaning and lawn maintenance.
• In order to reduce the walking resistance caused by friction between a lawn surface and a machine body, there is a distance between the bottom end of the machine body of the intelligent mower and the ground, and this distance allows people's feet to extend below the machine body, approach to a cutter as a cutting element, etc. In order to ensure the safety of people, the distance between the outermost side of the cutting element and the outside wall of the machine body of the intelligent mower is set to be larger necessarily, for example, larger than 80 mm. In this way, even people's feet extend below the machine body, the feet cannot make contact with the cutting element. Due to such arrangement manner, the intelligent mower cannot cut the lawn away from the outermost side of a working region by about 80 mm always, and such part of lawn still needs manual maintenance, and the use experience of the intelligent mower is greatly reduced.
SUMMARY
• In view of this, it is necessary to provide a mower meeting the cutting and safety requirements at the same time.
• A mower, comprising:
• a cutting mechanism, configured to execute a cutting operation;
• a machine body, connected with:
• a side part protection, located in the side of said cutting mechanism, to establish a protection barrier in the side of said cutting mechanism; and
• a bottom protection, located below said cutting mechanism, to establish a protection barrier below said cutting mechanism, wherein said bottom protection is provided with a grass inlet.
• A side part protection of the above mower can prevent a human body from making contact with a cutting mechanism from the side direction of the cutting mechanism, a bottom protection can prevent the human body from making contact with the cutting mechanism from the lower direction of the cutting mechanism, the bottom protection is provided with a grass inlet, such that cutting can be carried out smoothly; due to the bottom protection, the side part protection and the cutting mechanism can be set to approach to the outer side of the mower as much as possible, thereby realizing the cutting of the edge of the lawn, and further meeting the cutting and safety requirements at the same time.
• In one of the embodiments, said grass inlet is a strip-shaped slit and an angle range between the forming direction of said grass inlet and an advancing direction of said mower is 0-45 degrees.
• In one of the embodiments, the width of said grass inlet in a direction vertical to an advancement direction of said mower is less than 13 mm.
• In one of the embodiments, the distance between cutting elements of the cutting mechanism and the outermost side of the machine body is less than 20 mm.
• In one of the embodiments, one side of said bottom protection back onto said cutting mechanism is set into an arc raised relative to said cutting mechanism.
• In one of the embodiments, said cutting mechanism is eccentrically arranged below said machine body, is deviated to one side of said machine body, and the deviated direction of said side protection and said bottom protection is same as that of said cutting mechanism.
• In one of the embodiments, more than or equal to two cutting mechanisms are arranged, wherein said more than or equal to two cutting mechanisms are deviated to one side of said machine body; or more than or equal to two cutting mechanisms are arranged, and the deviated said cutting mechanisms are arranged at two sides of said machine body.
• In one of the embodiments, said cutting mechanism is movably connected to said machine body, and said side part protection and said bottom protection move by following said cutting mechanism.
• In one of the embodiments, said cutting mechanism can extend out a profile range of said machine body.
• In one of the embodiments, said machine body comprises a moving part movably arranged relative other parts of said machine body, and said cutting mechanism, said side part protection and said bottom protection are all connected to said moving part.
• In one of the embodiments, said mower also comprises a driving mechanism capable of driving said moving part to move, and said moving part drives said cutting mechanism to move during moving.
• In one of the embodiments, said driving mechanism drives said moving part to rotate or slide, and said moving part drives said cutting mechanism to rotate or slide when moving.
• In one of the embodiments, said driving mechanism comprise a worm gear connected to said moving part, a worm matched with said worm gear and a motor driving said worm to rotate, and when said motor drives said worm to rotate, said worm gear drives said moving part to rotate around the axis of the worm gear.
• In one of the embodiments, said machine body is further provided with an elastic element, said elastic element is compressed when said cutting mechanism is subjected to a pressure, and provides an elastic force for enabling the moving part to drive said cutting mechanism to return after the pressure disappears.
• In one of the embodiments, said elastic element is a torsional spring or a pressure spring.
• In one of the embodiments, said cutting mechanism comprise a cutting motor, mounted on said moving part; a cutterhead, connected to the shaft of said cutting motor; and cutting elements arranged on said cutterhead.
• In one of the embodiments, said side part protection extends in a height direction of said machine body, said bottom protection extends in a direction vertical to said height direction, said cutting elements have a cutting region when working, and said cutting region extends in a direction vertical to said height direction.
• In one of the embodiments, said mower also comprise a traveling module and a control module arranged on said machine body, wherein said traveling module drives said mower to travel and steer, said control module is electrically connected to said traveling module to control the traveling module to work, and said control module is electrically connected to said cutting mechanism to control said cutting mechanism to execute the cutting operation.
• In one of the embodiments, said control module controls said mower to walk along a preset boundary line.
• In one of the embodiments, the length of said bottom protection is greater than or equal to a cutting diameter of said cutting mechanism.
• In one of the embodiments, said bottom protection and said side part protection are connected into a whole.
• In one of the embodiments, the height of the cutting elements of said cutting mechanism on the machine body is adjustable, and said side part protection and said bottom protection are ascended and descended by following said cutting elements.
• In view of the above, it is necessary to provide a mower capable of cutting the lawn at a boundary.
• A mower comprises:
• an enclosure;
• a first cutting head, located below the enclosure and inside the outside wall of the enclosure; and
• a second cutting head, extending to the outside of the outside wall from the inside of the outside wall of the enclosure.
• According to the above mower, the outer side of the enclosure is provided with a mowing working head, which can cut the grass at the boundary without extra trimming, and the working efficiency is improved.
• In one of the embodiments, the first working head and the second working head respectively have a first cutting region and a second cutting region during work, wherein the first cutting region and the second cutting region form a continuous cutting region together in the direction vertical to an advancing direction of the mower.
• In one of the embodiments, the mower also comprises a first cutting motor and a second motor which are located below the enclosure, wherein the first cutting head is driven by the first cutting motor to work, and the second cutting head is driven by the second cutting motor to work.
• In one of the embodiments, the first cutting head comprises a cutterhead connected on a shaft of the cutting motor and driven by the first cutting motor to rotate, and a plurality of cutting elements arranged along a circumferential direction of the cutterhead.
• In one of the embodiments, the second cutting head comprises a first blade and a second blade which can perform relative translation reciprocation movement under the driving of a shaft of the second cutting motor.
• In one of the embodiments, the outside of the outside wall of the enclosure is further provided with a shield for protecting the second cutting head.
• In one of the embodiments, when the mower works, a gap between the bottom of the shield and the ground is less than or equal to 35 mm.
• In one of the embodiments, the outside wall of the enclosure is provided with rollers at two sides of the second cutting head respectively, and the shield is fixed on a rolling shaft of the rollers.
• In one of the embodiments, the two second cutting heads are arranged and are located on two sides of the enclosure respectively.
• In one of the embodiments, the mower also comprises a control module, which is electrically connected to the first cutting head and the second cutting head to control the two to work.
• In view of the above, it is necessary to provide an intelligent mower capable of cutting the lawn at a boundary.
• A mower, comprises:
• an enclosure;
• a cutting motor, located below the enclosure;
• a cutting head, driven by the cutting motor, located below the enclosure, and extending to the outside of the outside wall from the inside wall of the outside wall of the enclosure, wherein, during work, the cutting head forms a continuous cutting region extending to the outside of the outside wall from the inside wall of the outside wall of the enclosure in a direction vertical to the advancing direction of the mower.
• According to the mower, during work, the cutting head forms a continuous cutting region extending to the outside of the outside wall from the inside wall of the outside wall of the enclosure in a direction vertical to the advancing direction of the mower, compared with the traditional mower that a central rotary cutterhead is arranged in the center below the enclosure, the lawn at the boundary is also cut during normal cutting without the need of extra trimming, and the working efficiency is improved.
• In one of the embodiments, the cutting head can rotate in a preset angle relative to the enclosure.
• In one of the embodiments, a transmission shaft for driving the cutting head to work is further arranged below the enclosure, power is transmitted between the transmission shaft and a shaft of the cutting motor through a conveyor belt, wherein the transmission shaft is movably arranged relative to the enclosure, and the transmission shaft drives the cutting head to rotate in a preset angle when moving relative to the enclosure.
• In one of the embodiments, the mower also comprises a support movably mounted relative to the enclosure, and the transmission shaft is fixed on the support and the support drives the transmission shaft to move when moving relative to the enclosure.
• In one of the embodiments, an elastic element is arranged between the support and the enclosure, the elastic element is compressed when the cutting head is subjected to a pressure and provides an elastic force for enabling the support to drive the cutting head to return after the pressure disappears.
• In one of the embodiments, the elastic element is a torsional spring.
• In one of the embodiments, the mower also comprises a driving mechanism for driving the support to rotate.
• In one of the embodiments, the cutting head comprises a first blade and a second blade which can perform relative translation reciprocation movement, wherein the transmission shaft drives at least one of the first blade and the second blade to perform translation reciprocation movement by an eccentric wheel.
• In one of the embodiments, the outside wall of the enclosure is further provided with a shield for protecting the cutting head.
• In one of the embodiments, when the mower works, a gap between the bottom of the shield and the ground is less than or equal to 35 mm.
• In one of the embodiments, the outside wall of the enclosure is provided with rollers at two sides of the cutting head respectively, and the shield is fixed on a rolling shaft of the rollers.
• In view of the above, it is necessary to provide an intelligent mower capable of thorough cleaning grass nearby an obstacle, specific to the technical problem that the grass nearby the obstacle cannot thoroughly cleaned due to an influence of the body of the intelligent mower.
• An intelligent mower, comprises: a body; a driving system, configured to drive the body of the intelligent mower to travel; a cutting system, configured to mow the grass. The intelligent mower also comprises a position control system, configured to change a relative position between the cutting system and the body.
• Since the above intelligent mower is provided with the position control system, the cutting system rotates to avoid the obstacle. When the mower of the present invention meets the obstacle, the position control system can change a position relation between the cutting system and the body, to further change a cutting region of the cutting system, such that the grass nearby the obstacle is located in the cutting region, therefore, the intelligent mower can finish the trimming of the grass nearby the obstacle when meeting the obstacle.
• In one of the embodiments, the position control system comprises: a moving part, configured to drive the cutting system to move, arranged on the bottom of the body and capable of being exposed outside one side of the body; a rotary shaft, connected between the body and a non-geometric center of the moving part, wherein the moving part can rotate around the rotary shaft.
• In one of the embodiments, the position control system further comprises a rotation control device, configured to control the moving part to rotate around the rotary shaft such that an air cutting system avoids the obstacle or is reset after avoiding the obstacle.
• In one of the embodiments, the rotation control device comprises an elastic part capable of resetting the air cutting system after the air cutting system avoids the obstacle, and the elastic part is connected between the moving part and the body.
• In one of the embodiments, the elastic part is a pull spring.
• In one of the embodiments, the elastic part is a torsional spring.
• In one of the embodiments, the moving part is fixed on the rotary shaft, and the rotation control device comprises a control motor configured to control the rotary shaft to rotate.
• In one of the embodiments, the rotary shaft is connected to an edge position of the moving part.
• In one of the embodiments, the cutting system comprises a blade and a cutting motor, the blade is fixed on the lower surface of the moving part, and the cutting motor controls the blade to rotate.
• In one of the embodiments, the driving system comprises a driving wheel mounted on the body and a driving motor for driving the driving wheel to rotate.
BRIEF DESCRIPTION OF THE DRAWINGS
• FIG. 1 is a structural schematic diagram of a mower of one embodiment;
• FIG. 2 is a top schematic diagram of the mower;
• FIG. 3 is a sectional schematic diagram of the mower;
• FIG. 4 is a three-dimensional schematic diagram of the mower;
• FIG. 5 is a schematic diagram of a grass inlet in a bottom protection;
• FIG. 6 is a schematic diagram that the mower adapts to the shape of a sideward obstacle for cutting;
• FIG. 7 is a schematic diagram that the mower adapts to the shape of the earth's surface for cutting;
• FIG. 8 is a structural schematic diagram of an intelligent mower of another embodiment;
• FIG. 9 is a schematic sectional diagram of A-A inFIG. 8;
• FIG. 10 is a schematic sectional diagram of B-B inFIG. 8;
• FIG. 11 is a structural schematic diagram of an intelligent mower of further embodiment;
• FIG. 12 is a schematic sectional diagram of A-A inFIG. 11;
• FIG. 13 is a schematic sectional diagram of B-B inFIG. 11;
• FIG. 14 is a schematic sectional diagram of C-C inFIG. 11;
• FIG. 15 is a state schematic diagram of a bottom structure of an intelligent mower according to a preferable embodiment of the present invention, at this time no obstacle encounters;
• FIG. 16 is another state schematic diagram of a bottom structure of an intelligent mower according to a preferable embodiment of the present invention, at this time an obstacle encounters.
• Corresponding numbers of relevant elements in the drawing as follows:

• 100,mower	110,machine body	112,control module
  114, movingpart	120, traveling	122,front wheel
  	module
  124, backwheel	126, travelingmotor	130,cutting mechanism
  132, cuttingmotor	134,cutterhead	136, cuttingelement
  1362, cuttingregion	140, driving	142,worm gear
  	mechanism
  144,worm	146,motor	150,side part
  		protection
  160,bottom protection	162,grass inlet	170,outer shield
  1001,mower	1101,enclosure	1121, outsidewall
  1201, travelingmodule	1301, first cutting	1321, cutterhead
  	head
  1341, cuttingelement	1401, first cutting	1501, second cutting
  	motor	head
  1511,first blade	1521,second blade	1531,speed reduction
  		gear
  1541,transmission	1551,support	1601, secondcutting
  shaft		motor
  1701,shield	1801,roller	1702,roller
  1002,mower	1102,enclosure	1122, outsidewall
  1202, travelingmodule	1302, cuttinghead	1312,first blade
  1322,second blade	1332, drivenwheel	1342,transmission shaft
  1352,support	1402, cuttingmotor	1522,driving wheel
  1542,conveyor belt	1602,shield	1003.intelligent mower
  1103.body	1213.driving wheel	1303.position control
  		system
  1313. movingpart	1323.rotary shaft	1333.rotation control
  		device
  2003. obstacle

DETAILED DESCRIPTION
• Implementation modes of the present invention are elaborated below with reference to the accompanying drawings, to enable the objectives, advantages and features of the present invention more comprehensible. Specific details are described below to enable persons skilled in the art to fully understand the present invention. However, the present invention may be implemented in other manners besides those described herein. Persons skilled in the art can make such improvements without departing from the concept of the present invention. Therefore, the present invention is not limited by the embodiments disclosed in the following.
• Referring toFIGS. 1 and 2, amower100 of one embodiment of the present invention comprises amachine body110, a travelingmodule120 and acutting mechanism130.
• The travelingmodule120 comprises afront wheel122 andback wheels124 arranged on themachine body110, and a travelingmotor126 driving thefront wheel122 and theback wheels124 to travel. Thefront wheel122 and theback wheels124 constitute a wheel group. Onefront wheel122 is arranged and is located on the front end of themachine body110. Twoback wheels124 are symmetrically arranged at two sides of the back end of themachine body110. Of course, one back wheel can replace the pair of back wheels for use. Similarly, one front wheel can replace the pair of front wheels for use. As shown inFIGS. 1 and 2, the direction from right to left is an advancing direction of themower100. Meanwhile, the advancing direction of themower100 can also be a direction from the back end to the front end of themower100.
• Themower100 of the present invention is an intelligent mower. Referring toFIG. 1, themachine body110 is provided with acontrol module112. Thecontrol module112 is electrically connected to the travelingmodule120 and configured to control themower100 to travel, and is electrically connected to thecutting mechanism130 and configured to control thecutting mechanism130 to work. Thecontrol module112 can control the mower to walk along a preset boundary line to execute a cutting operation.
• Thecutting mechanism130 is arranged below themachine body110 and is configured to execute the cutting operation. In the present invention, thecutting mechanism130 executes eccentrically cut. Specifically, referring toFIG. 1, the central line A is a position where the central axis of themachine body110 is, and the central line B is a position where the central axis of thecutting mechanism130 is. The central line B is not coincided with the central line A and is at one side of the central line A, and is at the right side of central line A inFIG. 1, such that thecutting mechanism130 is eccentrically arranged below themachine body110, and is deviated to the right side of themachine body110. In this way, thecutting mechanism130 can approach to the outer side of themachine body110 as much as possible, so as to cut the lawn at the boundary of a working region, i.e., edge trimming is effectively realized without manual trimming.
• Onecutting mechanism130 is arranged in the present invention. However, more than or equal to two cuttingmechanisms130 can be arranged, and are both eccentrically arranged to execute the eccentric cutting. Further, all cuttingmechanisms130 are deviated to one side of themachine body110, or the deviated cuttingmechanisms130 are arranged on both sides of themachine body110. For example, two cuttingmechanisms130 are arranged, then the central axis of the two cuttingmechanisms130 are respectively located at the left side and right side of the central axis of themachine body110, thereby expanding an operation range of themower100.
• Thecutting mechanism130 is movably arranged relative to themachine body110 to adapt to the shape of an obstacle at the boundary line of a cutting region, and realize the following moving when meeting the obstacle. Specifically, themachine body110 is provided with a movingpart114 movably arranged relative to other parts of themachine body110. Thecutting mechanism130 is connected to the movingpart114. The movingpart114 can drive thecutting mechanism130 to move when moving. Or, when the position of thecutting mechanism130 is changed due to an external force action, the position of the movingpart114 can also be changed along with thecutting mechanism130.
• In the present invention, themachine body110 is provided with adriving mechanism140 for driving the movingpart114 to move. Thedriving mechanism140 drives the movingpart114 to move when working, and the movingpart114 drives thecutting mechanism130 to move, for example, rotate or slide. InFIG. 2, thecutting mechanism130 can rotate relative to themachine body110.
• When cutting the grass at the boundary of a complex working condition, as shown inFIG. 6, there is a wall or other obstacles at the boundary of the cutting working region, at this point, a sensing detection element arranged on thecontrol module112 detects the shape of the obstacle in real time, and then sends a command to thedriving mechanism140, further thedriving mechanism140 drives the movingpart114 to rotate, the movingpart114 can drive thecutting mechanism130 to rotate left and right when rotating, so as to enable thecutting mechanism130 to adapt to the shape of the obstacle while themower100 advances. Thecutting mechanism130 is set to be capable of extending out of a profile range of themachine body110, so as to expand the cutting range of themower100 as required, and ensure that there is no residual grass left in the cutting of the complex working condition boundary.
• In addition, thecutting mechanism130 realizes the real-time following up according to the shape of the obstacle, and the driving mechanism may not be arranged. For example, an elastic element can be directly arranged between thecutting mechanism130 and themachine body110. The elastic element is compressed when thecutting mechanism130 is subjected to a pressure, and provides an elastic force allowing thecutting mechanism130 to return when the pressure disappears. Therefore, in a normal state, under the action of the elastic element, thecutting mechanism130 is in a position with the maximal cutting capacity, and can cut the lawn closer to the edge. When themower100 advances along the obstacle, thecutting mechanism130 moves to a direction away from the boundary if thecutting mechanism130 is subjected to the pressure from the boundary lawn or the obstacle in the advancing process. After the pressure disappears, the elastic element actuates thecutting mechanism130 to return. Therefore, thecutting mechanism130 can realize the movement according to the shape of the obstacle and ensure that there is no residual grass left in the cutting of the complex working condition boundary.
• The elastic element can be a torsion spring, and can allow thecutting mechanism130 to rotate or slide. The elastic element can also be an element with elasticity such as a pressure spring, which can allow thecutting mechanism130 to slide.
• Referring toFIG. 7, the cutting height of themower100 of the present invention can be adjusted in real time along with the fluctuation of the earth's surface, so as to adapt to different terrains. The height from themachine body110 to the ground can be changed by adjusting a relative position between themachine body110 and the wheel group, to further change the cutting height, or the cutting height, can be changed by changing the height of thecutting mechanism130 on themachine body110.
• Referring toFIGS. 1 and 3, thecutting mechanism130 comprises: a cuttingmotor132, acutterhead134 and cuttingelements136.
• The cuttingmotor132 is mounted on the movingpart114. The movingpart114 can serve as a motor bracket. The movingpart114 is deviated to the right side of themachine body110, such that the axis of a shaft of the cuttingmotor132 is arranged at the right side of the central axis of themachine body110. Thecutterhead134 is disc-like and connected to the shaft of the cuttingmotor132. When the cuttingmotor132 works, thecutterhead134 is driven to rotate. A plurality of cuttingelements136 are arranged and are uniformly arranged along the circumferential direction of thecutterhead134. The cuttingelements136 are cutting blades. When the position of the movingpart114 is changed, the movingpart114 drives the cuttingmotor132, thecutterhead134 and the cuttingelements136 to move together.
• When thedriving mechanism140 is arranged to adjust the position of thecutting mechanism130 to adapt to the cutting of different working condition boundaries, thedriving mechanism140 changes the position of thecutting mechanism130 by driving the movingpart114. Thedriving mechanism140 is mounted on themachine body110.
• In one example, referring toFIG. 2, thedriving mechanism140 comprises aworm gear142 connected to the movingpart114, aworm144 matched with theworm gear142, and amotor146 driving theworm144 to rotate. When themotor146 drives theworm144 to rotate, theworm gear142 drives the movingpart114 to rotate around the axis of theworm gear142.FIG. 2 illustrates two positions C and D of thecutting mechanism130.
• However, the driving mechanism can be other types of transmission devices, for example, in other example, thedriving mechanism140 can be a gear and a rack mechanism.
• When the elastic element is arranged to endow thecutting mechanism130 with the capacity of adapting to the shape of the boundary obstacle, the elastic element can be arranged between other parts of themachine body110 and the movingpart114 on themachine body110. As abovementioned, the elastic element can be a torsional spring or common pressure spring, or other elements with elasticity.
• In the present invention, thecutting mechanism130 executes eccentric cutting, and is arranged below themachine body110 in a deviated manner. Therefore, thecutting mechanism130 is closer to the outside of themachine body110.
• For this, referring toFIGS. 3 and 4, themachine body110 is further provided with aside part protection150 located outside thecutting mechanism130, so as to establish a protection barrier in the side of thecutting mechanism130. Theside part protection150 extends in a height direction (vertical direction) of themachine body110, to prevent a human body from making contact with the cuttingelements136 of thecutting mechanism130 from the side direction of themower100, and avoid harm.
• In addition, the bottom of themachine body110 of themower100 is away from the ground by a certain distance, the bottom end of the machine body of the intelligent mower is away from the ground by a certain distance, and due to this distance, people's feet or hands can extend below themachine body110 and approach to a cutter as the cutting element. The intelligent mower cruises along a preset boundary region to work in a case of unmanned operation. Although the aforesaidside part protection150 can prevent human tissues from extending below themachine body110 from the side direction of themower100 and from approaching the cutting element to some extent, the aforesaidside part protection150 still has certain defect in the case that passers accidentally extend fingers and toes below themachine body110 out of curiosity.
• For this, themower100 is further provided with abottom protection160, to establish a protection barrier from the lower side of thecutting mechanism130. Acutting region1362 of the cuttingelements136 extends in the horizontal direction. Thebottom protection160 is set to extend below thecutting mechanism130 along a direction (horizontal direction) vertical to the height direction of themachine body110. Thebottom protection160 is located below thecutting region1362 of the cuttingelements136, so as to establish protection between thecutting mechanism130 and the ground, thereby thoroughly avoiding the possibility that the human body tissues are in danger after extending below themachine body110.
• The positions of theside part protection150 and thebottom protection160 on themachine body110 are deviated to one side of themachine body110, and the deviations of the two are consistent with that of thecutting mechanism130.
• Referring toFIG. 5, thebottom protection160 is provided with agrass inlet162. Thegrass inlet162 is a strip-shaped slit, and an angle range between the forming direction of the strip-shaped slit and the advancing direction of themower100 is 0-45 degrees. In other words, by taking the advancing direction as an axis, the forming direction of thegrass inlet162 can be freely arranged in a range deviated leftwards and rightwards by 45 degrees. Thus in the cutting process, thebottom protection160 presses the grass down while advancing, and the pressed grass has a tendency of restoring the original shape. Therefore, when thegrass inlet162 moves to the pressed grass, the pressed grass can enter the cutting range of the cuttingelement136 just along thegrass inlet162 and is smoothly cut, and grass blocking is difficult to occur.
• When thegrass inlet162 is the strip-shaped slit, the width in the direction vertical to the advancing direction of themower100 is less than 13 mm, to avoid the fingers contacting the cuttingelements136 through thegrass inlet162 after entering below themachine body110. It should be noted that since the width is not the unique factor deciding whether the fingers can enter the grass inlet (there are other factors for example length), the width of thegrass inlet162 is not limited thereto. But if the width is arranged according to the above size, then the situation that the normal-sized fingers and toes of the people possibly occurring in the working region of themower100 enter thegrass inlet162 can be prevented without considering other factors.
• The shape and forming direction of thegrass inlet162 are not limited to the above manners, for example, a certain included angle can be formed between the forming direction of thegrass inlet162 and the advancing direction. For another example, in the present invention, thegrass inlet162 is the strip-shaped slit, and thebottom protection160 is fence-like. Thegrass inlet162 can also be set into other shapes, for example, a meshed structure, or an irregular structure, etc.
• One side of thebottom protection160 back onto thecutting mechanism130 is set into an arc raised relative to thecutting mechanism130. In other words, one side of thebottom protection160 opposite to the ground is arc-shaped. Thus in the advancing process of themower100, thebottom protection160 is not easily inserted into the ground of the working region, and smooth cutting is ensured.
• Thebottom protection160 can prevent the human body from making contact with thecutting mechanism130 after extending below themachine body110, and thegrass inlet162 in thebottom protection160 can enable the cutting to be smoothly performed. While theside part protection150 and thecutting mechanism130 can be set to approach to the outer side of themower100 as much as possible. Specifically, the distance between the cuttingelements136 of the cutting mechanism and the outermost side of themachine body110 is less than 20 mm, thereby realizing the cutting of the lawn edge while meeting the cutting and safety requirements at the same time.
• The length of thebottom protection160 is set to be greater than or equal to a cutting diameter of thecutting mechanism130, thereby preventing the human body from making contact with the cuttingelements136 of thecutting mechanism130 after the human body crosses over thebottom protection160. In addition, thebottom protection160 and theside part protection150 are connected into a whole, therefore, on one aspect, integral molding is facilitated to reduce the assembly procedures, and on the other aspect, there is no gap between thebottom protection160 and theside part protection150, and the human body is prevented from entering the working region of the cuttingelements136 from the gap between the two.
• The height of the cuttingelements136 of thecutting mechanism130 on themachine body110 is adjustable, and theside part protection150 and thebottom protection160 both following the cuttingelements136 to be ascended and descended. Specifically, theside part protection150 and thebottom protection160 are both supported by the movingpart114. Thus, the moving part drives theside part protection150 and thebottom protection160 to move together when moving. Theside part protection150 and thebottom protection160 follow thecutting mechanism130 to move together. In this way, when thecutting mechanism130 rotates, slides, or ascends and descends relative to themachine body110, theside part protection150 and thebottom protection160 can follow the cutting mechanism to move together and achieve a protection action. In addition, a relative position relation between theside part protection150 and thebottom protection160 and thecutting mechanism130 and the cuttingelements136 is fixed without change and does not need to be adjusted every time.
• Theside part protection150 and thebottom protection160 can be fixed on themachine body110, and the position is fixed without moving. Theside part protection150 and thebottom protection160 can be movably arranged in other positions of themachine body110 instead of moving together with thecutting mechanism110 as long as being adjusted together with thecutting mechanism130 every time.
• In the present invention, thecutting mechanism130 is located below themachine body110 and located in a profile range of themachine body110. It should be pointed out that thecutting mechanism130 can be set into a state that all or part of thecutting mechanism130 is located in the profile range of themachine body110. Since theside part protection150 and thebottom protection160 are arranged, the human body still cannot make contact with the cuttingelements136 of thecutting mechanism130 from the side surface and bottom, and harm is avoided.
• Referring toFIG. 3, in order to achieve the purpose of safety protection, the outer part of themachine body110 is further provided with anouter shield170. Theouter shield170 shields above themachine body110 and thecutting mechanism130 to protect themachine body110 and thecutting mechanism130 from the upper side, and to avoid harm.
• Another preferable embodiment of the mower is explained in combination with the drawings.
• Referring toFIGS. 8-10, themower1001 of another embodiment of the present invention, comprises anenclosure1101, a travelingmodule1201, afirst cutting head1301 arranged below theenclosure1101, and afirst cutting motor1401 driving thefirst cutting head1301 to work.
• The travelingmodule1201 is a wheel group mounted on theenclosure1101, and configured to drive themower1001 to advance and steer. InFIG. 8, the direction from the right to left is the advancing direction of themower1001. Meanwhile, the advancing direction of themower1001 is the direction from the back end to the front end of themower1001.
• Thefirst cutting head1301 is located below theenclosure1101, and inside theoutside wall1121 of theenclosure1101. Thefirst cutting head1301 is driven by thefirst cutting motor1401 mounted below theenclosure1101 to work. Thefirst cutting head1301 comprises acutterhead1321 connected to a shaft of thefirst cutting motor1401 and driven by thefirst cutting motor1401 to rotate, and a plurality of cutting elements1341 arranged along the circumferential direction of thecutterhead1321. The cutting elements1341 are usually blades made of a metal material.
• A round first cutting region is formed inside theoutside wall1121 of theenclosure1101 when thefirst cutting head1301 works. When themower1001 works, thefirst cutting head1301 mainly cuts the grass below theenclosure1101, and cannot cut the grass outside theenclosure1101. Themower1001 cuts in the working region defined by the boundary, when the intelligent mower walks to the edge of the lawn, the mower is automatically steered, such that the lawn located at the edge outside the boundary cannot be mowed by thefirst cutting head1301 always.
• For this, themower1001 of the present invention is further provided with asecond cutting head1501. Asecond cutting motor1601 driving thesecond cutting head1501 to work is arranged below theenclosure1101.
• The cutting elements of thesecond cutting head1501 extend to the outside of theoutside wall1121 from the inside of theoutside wall1121 of theenclosure1101. When thesecond cutting motor1601 drives thesecond cutting head1501, the second cutting region formed by thesecond cutting head1501 extends to the outside of theoutside wall1121 of theenclosure1101 from the inside of theoutside wall1121 of theenclosure1101. In addition, the first cutting region and the second cutting region jointly form a continuous cutting region in the direction vertical to the advancing direction of themower1001.
• When themower1001 cuts along the boundary line, the grass below theenclosure1101 is cut using thefirst cutting head1301, and the grass located outside theenclosure1101 and located in the lawn at the edge outside the boundary line is trimmed using thesecond cutting head1501. In other words, when themower1001 cuts along the boundary line, the grass outside the boundary line is cut together without the need to cut the grass at the edge of the lawn using another mower after the work of themower1001 is finished.
• The second cutting region formed by thesecond cutting head1501 extends to the outside of theoutside wall1121 of theenclosure1101 from the inside of theoutside wall1121 of theenclosure1101, and remedies the deficiency of the cutting capacity of thefirst cutting head1301 to certain extent. The first cutting region and the second cutting region are continuous to form a large cutting region, thereby increasing a one-time operation range of themower1001 and further improving the working efficiency.
• Further, two second cutting heads1501 are arranged and are located on both side of theenclosure1101 respectively, and the one-time operation range of themower1001 is expanded as much as possible.
• Referring toFIG. 10, thesecond cutting head1501 is a scissor pair and comprises afirst blade1511 and asecond blade1521 which can perform relative translation reciprocation movement under the driving of a shaft of thesecond cutting motor1601.
• Thefirst blade1511 and thesecond blade1521 perform relative translation reciprocation movement, and power of the two comes from the shaft of thesecond cutting motor1601. For example, a specific implementing manner can be as follows:
• Thefirst cutting motor1601 is fixed on theenclosure1101, and power is transmitted to atransmission shaft1541 using aspeed reduction gear1531. Thetransmission shaft1541 is supported on asupport1551. Thefirst blade1511 is fixed on thesupport1551, and is a fixed blade, and keeps still in the relative translation reciprocation movement. Thesecond blade1521 and thetransmission shaft1541 transmit power by an eccentric transmission mechanism, such that the rotation movement of thetransmission shaft1541 is converted into the reciprocation movement of thesecond blade1521.
• In addition, or thefirst blade1511 and thesecond blade1521 are connected to thetransmission shaft1541 by an eccentric transmission mechanism, such that the rotation movement of thetransmission shaft1541 is converted into the relative reciprocation movement of thefirst blade1511 and thesecond blade1521. For example, thetransmission shaft1541 can be provided with an eccentric wheel, thefirst blade1511 and thesecond blade1521 are respectively fixed in different positions of the eccentric wheel. When the eccentric wheel rotates, thefirst blade1511 and thesecond blade1521 realize relative reciprocation movement.
• Thesecond cutting head1501 is a scissor pair, and thefirst blade1511 and thesecond blade1521 are usually strip-shaped and occupy a small space so as to conveniently extend to the outside of the outside wall1211 from the inside of the outside wall1211 of theenclosure1101, and it is also convenient to arrange thesecond cutting motor1601 below theenclosure1101.
• Themower1001 of the present invention is an intelligent mower, and further comprises a control module. The control module is electrically connected to thetraveling module1201, and configured to control themower1001 to travel; and is electrically connected to thefirst cutting head1301 and thesecond cutting head1501 and configured to control thefirst cutting head1301 and thesecond cutting head1501 to work.
• Referring toFIG. 8, ashield1701 for protecting thesecond cutting head1501 is further arranged outside theoutside wall1121 of theenclosure1101. Theshield1701 protects the part of thesecond cutting head1501 outside theenclosure1101 from the upper side direction, side directions, and front and back sides, and the condition that accidental injury occurs during work since thesecond cutting head1501 exposed is avoided.
• In addition, theshield1701 is set into a state when themower1001 works, the distance between the bottom of the shield and the ground is less than or equal to 35 mm with the purpose of preventing fingers or toes from entering from the lower side of theshield1701.
• Rollers1801 are arranged at two sides of theoutside wall1121 of theenclosure1101 above two sides of thesecond cutting head1501. Theshield1701 is fixed on a rolling shaft of therollers1801, and thus obtains better supporting. In addition, therollers1801 achieve the action of protecting thesecond cutting head1501 to some extent.
• The preferable embodiments of the mower are explained in combination with the drawings.
• Referring toFIGS. 11-13, themower1002 of further embodiment of the present invention comprises anenclosure1102, a travelingmodule1202, a cuttinghead1302 arranged below theenclosure1102, and a cuttingmotor1402 driving thecutting head1302 to work.
• The mower of the present invention is anintelligent mower1002, and also comprises a control module. The control module is electrically connected to thetraveling module1202 and configured to control themower1002 to travel; and electrically connected to thecutting head1302 and configured to control the cuttinghead1302 to work.
• The travelingmodule1202 is a wheel group mounted on theenclosure1102 and configured to drive themower1002 to advance and steer. InFIG. 11, the direction from right to left is the advancing direction of themower1002. Meanwhile, the advancing direction of themower1002 is the direction from the back end to the front end of themower1002.
• The cuttinghead1302 extends to the outside of theoutside wall1122 from the inside of theoutside wall1122 of theenclosure1102, and forms a continuous cutting region extending to the outside of theoutside wall1122 from the inside of theoutside wall1122 of theenclosure1102 in the direction vertical to the advancing direction of themower1002.
• When themower1002 cuts along the boundary line, the part of the cuttinghead1302 located below theenclosure1102 cuts the grass below theenclosure1102, and the part of the cuttinghead1302 located outside theoutside wall1122 of theenclosure1102 can cut the grass located outside theenclosure1102 and located at the lawn at the edge outside the boundary line.
• Compared with the traditional mower in which a rotary cutterhead is arranged in the central position below the enclosure, when themower1002 cuts along the boundary line, the grass inside and outside the boundary line can be cut together, therefore on one aspect, the one-time operation range of themower1002 is larger, and the working efficiency is improved, and on the other aspect, another mower is not additionally used to cut the grass at the edge of the lawn after the working of themower1002 is finished.
• Referring toFIGS. 13 and 14, the cuttinghead1302 is a scissor pair, and comprises afirst blade1312 and asecond blade1322 which can perform relative translation reciprocation movement under the driving of a shaft of the cuttingmotor1402.
• Thefirst blade1312 and thesecond blade1322 perform relative translation reciprocation movement, and the power of the two comes from the shaft of the cuttingmotor1402. For example, a specific implementing manner is as follows:
• The cuttingmotor1402 is fixed on theenclosure1102, power is transmitted to a drivenwheel1332 of the cuttinghead1302 using adriving wheel1522 and aconveyor belt1542. The drivenwheel1332 transmits rotary power to thetransmission shaft1342. Thetransmission shaft1342 is supported on asupport1352. Thefirst blade1312 is fixed on thesupport1352, and is a fixed blade and kept still in the relative translation reciprocation movement. Thesecond blade1322 and thetransmission shaft1342 transmit power by an eccentric transmission mechanism, such that the rotation movement of thetransmission shaft1342 is converted into the reciprocation movement of thesecond blade1322.
• In addition, or thefirst blade1312 and thesecond blade1322 are connected to thetransmission shaft1342 by the eccentric transmission mechanism, such that the rotation movement of thetransmission shaft1342 is converted into the relative reciprocation movement of thefirst blade1312 and thesecond blade1322. For example, thetransmission shaft1342 can be provided with an eccentric wheel, and thefirst blade1312 and thesecond blade1322 are mounted in different positions of the eccentric wheel. When the eccentric wheel rotates, thefirst blade1312 and thesecond blade1322 can realize the relative reciprocation translation movement.
• The cuttinghead1302 is a scissor pair, and thefirst blade1312 and thesecond blade1322 are normally strip-shaped and occupy a small space so as to conveniently extend to the outside of theoutside wall1122 from the inside of theoutside wall1122 of theenclosure1102.
• The cuttinghead1302 can also be set to be capable of rotating in a preset angle relative to theenclosure1102, such that the cuttinghead1302 can realize the following up in real time according to the shape of an obstacle.
• In the present invention, thesupport1352 is movably mounted on theenclosure1102, when thesupport1352 rotates relative to theenclosure1102, thesupport1352 drives thefirst blade1312 and thesecond blade1322 to move together by thetransmission shaft1342, thereby realizing the movement of the cuttinghead1302.
• Specifically, an elastic element can be arranged between thesupport1352 and theenclosure1102. The elastic element is compressed when thefirst blade1312 and thesecond blade1322 are subjected to a pressure, and provides an elastic force allowing thefirst blade1312 and thesecond blade1322 to return after the pressure disappears. When themower1002 advances, if thefirst blade1312 and thesecond blade1322 are subjected to the pressure from the edge lawn or the obstacle in the advancing process, thefirst blade1312 and thesecond blade1322 move along a direction opposite to the pressure. After the pressure disappears, the elastic element actuates thefirst blade1312 and thesecond blade1322 to return. Therefore, the cuttinghead1302 can move according to the shape of the obstacle, as shown by an arrow inFIG. 12, the cuttinghead1302 can swing back and forth and ensure that there is no residual grass in the cutting of the complex working condition boundary.
• The elastic element can be a torsional spring, and can allow thecutting head1302 to rotate or slide. The elastic element can also be an element with elasticity for example, a pressure spring, which can allow thecutting head1302 to slide.
• In addition, the cuttinghead1302 realizes the following up in real time according to the shape of the obstacle, and a driving mechanism driving thesupport1352 to move can also be arranged. For example, a worm gear-worm mechanism can be arranged, a worm is driven by the motor to rotate, the worm drives the worm gear to rotate around the axis of the worm gear, and the worm gear drives thesupport1352 to rotate when rotating.
• When themower1002 cuts along the boundary of the cutting region, when a wall or other obstacles exist at the boundary of the working region, a sensing detection element arranged on the control module detects the shape of the obstacle in real time, then sends a command to the driving mechanism, further the driving mechanism drives thesupport1352 to rotate, and the left and right rotation of the cuttinghead1302 is realized, therefore, the cuttinghead1302 can adapt to the shape of the obstacle, meanwhile themower1002 advances.
• Referring toFIG. 11, ashield1602 for protecting the cuttinghead1302 is further arranged outside theoutside wall1122 of theenclosure1102. Theshield1601 protects the part of the cuttinghead1302 outside theenclosure1102 from the upper side direction, side directions, and front and back sides, and the condition that accidental injury occurs during work since the cuttinghead1302 exposed is avoided.
• In addition, theshield1602 is set into a state when themower1002 works, the distance between the bottom of the shield and the ground is less than or equal to 35 mm with the purpose of preventing fingers or toes from entering from the lower side of theshield1602.
• Rollers1702 are arranged on theoutside wall1122 of theenclosure1102 at two sides of the cuttinghead1302. Theshield1602 is fixed on a rolling shaft of therollers1702, and thus obtains better supporting. In addition, therollers1702 achieve the action of protecting the cuttinghead1302 to some extent.
• As shown inFIG. 15, the present invention discloses yet another embodiment of theintelligent mower1003, theintelligent mower1003 can automatically trim the grass on the lawn, and comprises abody1103, a driving system, a cutting system and aposition control system1303, wherein the above driving system comprises adriving wheel1213 and a driving motor (not shown), thedriving wheel1213 is arranged at the bottom of thebody1103, the driving motor drives theabove driving wheel1213 to rotate and further enables theintelligent mower1003 to travel on the lawn.
• The cutting system comprises a cutting motor (not shown) and a blade (not shown), the cutting motor drives the blade to rotate, and further uses the blade to trim the lawn. The aboveposition control system1303 is connected to the cutting system, and configured to change a relative position relation between the cutting system and thebody1103, when theintelligent mower1003 trims the lawn and meets an obstacle and cannot trim the grass nearby the obstacle, theposition control system1303 controls the cutting system to avoid the obstacle and trim the grass nearby the obstacle.
• Specifically, theposition control system1303 comprises a movingpart1313 and arotary shaft1323. The movingpart1313 is mounted on the bottom of thebody1103 by therotary shaft1323, the movingpart1313 can be partially exposed outside one side of thebody1301, the blade is fixed at the lower surface of the movingpart1313, therotary shaft1323 is connected between thebody1103 and the movingpart1313, and therotary shaft1323 is connected to a non-geometric center position of the movingpart1313, when the movingpart1313 meets anobstacle2003, as shown inFIG. 16, the movingpart1313 moves relative to therotary shaft1323 due to the counteraction force of the obstacle, such that the movingpart1313 drives the cutting system to travel in a manner of clinging to the edge of theobstacle2003, and further the blade arranged at the lower surface of the movingpart1313 can trim the grass nearby theobstacle2003.
• In order to better trim the grass nearby theobstacle2003, therotary shaft1323 is arranged in a position of the movingpart1313 close to the edge. In this way, the movingpart1313 can make contact with the lawn nearby the obstacle as much as possible and trims the grass in this position.
• Specifically speaking, the aboveposition control system1303 also comprises arotation control device1333. When the movingpart1313 of theintelligent mower1003 meets the obstacle, since theintelligent mower1003 continues to advance, the movingpart1313 will certainly rotate, and when theintelligent mower1003 continues to travel forwards to make the moving part not contact with theobstacle2003, therotation control device1333 enables the movingpart1313 to return back to the initial position. For example, therotation control device1333 can be an elastic part, the elastic part is connected between the movingpart1313 and thebody1103, when the movingpart1313 rotates after meeting theobstacle1303, the positions of two fixing points of the elastic part respectively fixed at the movingpart1313 and thebody1103 are changed, such that the elastic part generates certain elasticity, further, when the movingpart1313 does not make contact with theobstacle2003, the movingpart1313 returns to the initial position due to the elasticity action of the elastic part.
• The above elastic part can be a pull spring, two ends of the pull spring are fixed on the movingpart1313 and thebody1103 respectively, and when the movingpart1313 meets theobstacle2003, the pull spring is lengthened due to the rotation of the movingpart1313, and further generates pull force. When the movingpart1313 makes no contact with theobstacle2003, the pull spring enables the movingpart1313 to return back to the initial position using the pull force.
• The elastic part can be a torsional spring or leaf spring, the difference lies in that the torsional spring or leaf spring generates corresponding torsion or bending stress due to the change of the position of the movingpart1313, and the principle is same as that of the pull spring, and is not repeated here in the present invention.
• Besides the manner of the elastic part, therotation control device1333 can also use a control motor to control the movingpart1313 to rotate around therotary shaft1323, such that the cutting system and the movingpart1313 avoid the obstacle or the movingpart1313 returns back to the initial position, specifically, the control can be performed in a manner of manually inputting a control program or automatically sensing the obstacle, and the above control manner can adopt a manner well-known by those skilled in the art and is not repeated here in the present invention.
• According to theintelligent mower1003, a relative position relation between the cutting system and thebody1103 can be changed since the movingpart1313 of theposition control system1303 rotates after subjected to the resistance action of the obstacle, the blade arranged at the lower surface of the movingpart1313 trims the grass, thus the grass nearby the obstacle can be trimmed when the intelligent mower meets the obstacle, and the problem that the grass nearby the obstacle cannot be trimmed thoroughly when the traditional mower meets the obstacle is solved.
• The respective technical features of the above embodiments can be combined freely, for the purpose of brief description, not all possible combinations of the above technical features are described. However, the combinations of these technical features fall within the scope recited in the present invention as long as they do not conflict with one another.
• The above embodiments merely express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, which cannot be thus understood as limitations to the patent scope of the present invention. It should be noted that, for those of ordinary skill in the art, several transformations and improvements can also be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (21)

1-22. (canceled)

23. A protected cutting device for a mower, comprising:

a cutting mechanism, configured to execute a cutting operation and movably connectable to a machine body of the mower;

a side part protection and a bottom protection connectable to the machine body of the mower;

the side part protection, located on a side of the cutting mechanism, to establish a protection barrier on the side of the cutting mechanism; and

the bottom protection, located below the cutting mechanism, to establish a protection barrier below the cutting mechanism, wherein the bottom protection is provided with a grass inlet.

24. The protected cutting device for a mower ofclaim 23, wherein a length of said bottom protection is greater than or equal to a cutting diameter of said cutting mechanism.

25. The protected cutting device for a mower ofclaim 23, wherein the cutting mechanism is configured to be eccentrically arranged below the machine body, deviated to one side of the machine body.

26. The protected cutting device for a mower ofclaim 23, wherein a width of said grass inlet in a direction vertical to an advancement direction of said mower is less than 13 mm.

27. The protected cutting device for a mower ofclaim 23, wherein said grass inlet comprises a plurality of strip-shaped slits.

28. The protected cutting device for a mower ofclaim 23, further comprising:

one or more rolling shafts, wherein each of the one or more rolling shafts comprises a respective roller.

29. The protected cutting device for a mower ofclaim 23, wherein the side part protection is arranged such that the side part protection is 35 mm or less from the ground when the protected cutting device is in operation.

30. A side part protection cutting device, comprising:

a cutting head comprising a first blade and a second blade;

an eccentric wheel configured to translate the first blade and the second blade in a reciprocation movement; and

a shield configured to protect the cutting head, wherein the side part protection cutting device is configured to be connected to a mower.

31. The side part protection cutting device ofclaim 30, further comprising:

one or more rolling shafts, wherein each of the one or more rolling shafts comprises a respective roller.

32. The side part protection cutting device ofclaim 31, wherein the one or more rolling shafts are arranged on two sides of the shield.

33. The side part protection cutting device ofclaim 32, wherein the shield is fixed to the one or more rolling shafts.

34. The side part protection cutting device ofclaim 30, wherein the shield is arranged such that the shield is 35 mm or less from the ground when the side part protection cutting device is in operation.

35. The side part protection cutting device ofclaim 30, wherein the side part protection cutting device is configured to be movably mounted to a mower.

36. The side part protection cutting device ofclaim 30, further comprising:

a bottom protection comprising a grass inlet in a direction vertical to the advancement direction of said mower.

37. A side part cutting device for a mower, comprising:

two blades configured for translation reciprocation movement;

a support;

a shield configured to protect the two blades;

one or more rolling shafts supporting the shield, wherein each of the one or more rolling shafts comprises a respective roller; and

a transmission shaft configured for rotational movement and supported on the support, wherein a rotational movement of the transmission shaft transmits power to at least one of the two blades, and the power is converted into the translation reciprocation movement.

38. The side part cutting device ofclaim 37, wherein the cutting device is configured to be movably mounted to said mower.

39. The side part cutting device ofclaim 37, wherein a first shaft of the one or more rolling shafts is arranged on a first side of the two blades, and a second shaft of the one or more rolling shafts is arranged on a second side of the two blades.

40. The side part cutting device ofclaim 37, further comprising:

a grass inlet in a direction vertical to an advancement direction of said mower, and wherein the grass inlet is less than 13 mm.

41. The side part cutting device ofclaim 37, wherein the shield is arranged such that the shield is 35 mm or less from the ground when the side part cutting device is in operation.

42. The side part cutting device ofclaim 37, further comprising:

a bottom protection comprising a grass inlet in a direction vertical to the advancement direction of said mower.

Images