Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
It will also be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
Referring to fig. 1-10, the present invention provides a pitch assembly 10 for driving a nose assembly 30 to rotate in a vertical direction.
The pitch assembly 10 comprises:
The rotating shaft 13, the rotating shaft 13 includes a head 16 and a rotating rod 14 connected to the head 16, an area of an area formed by surrounding the outer edge of the longitudinal section of the head 16 is larger than an area of an area formed by surrounding the outer edge of the longitudinal section of the rotating rod 14, the rotating rod 14 is radially provided with at least one first boss 141 and at least one second boss 142 arranged opposite to the first boss 141, the at least one second boss 142 is arranged at one end of the rotating rod 14 away from the head 16, the at least one first boss 141, the rotating rod 14 and the head 16 together form a first accommodating part 143, and the at least one first boss 141, the at least one second boss 142 and the rotating rod 14 together form a second accommodating part 145;
a first shaft sleeve 131, wherein the first shaft sleeve 131 is provided with a first through hole 1311 matched with the rotary rod 14 and a first through groove 1313 matched with the first boss 141, and the first through groove 1313 is communicated with the first through hole 1311; and
The second sleeve 133, the second sleeve 133 is provided with a second through hole 1331 matching with the rotating rod 14 and a second through slot 1333 matching with the second boss 142, the second through slot 1333 is communicated with the second through hole 1331, the first sleeve 131 is sleeved on the rotating rod 14 and is accommodated in the first accommodating portion 143, the second sleeve 133 is sleeved on the rotating rod 14 and is accommodated in the second accommodating portion 145, when the rotating shaft 13 is in a locking state with the first sleeve and the second sleeve, the first boss 141 is staggered with the first through slot 1313, and the second boss 142 is staggered with the second through slot 1333.
It will be appreciated that the first through slot 1313 mates with both the first boss 141 and the second boss 142. And the second through slot 1333 is matched with the first boss 141 and the second boss 142.
The longitudinal section of the head 16 may be a plane obtained by cutting the head 16 in the vertical direction. The longitudinal section of the rotating lever 14 may be a surface obtained by cutting the rotating lever 14 in the vertical direction. The vertical direction is perpendicular to the axial direction of the rotating shaft 13.
The rotary rod 14 of the present invention is provided with at least one first boss 141 and at least one second boss 142 opposite to the first boss 141 along the axial direction, the second boss 142 is disposed at one end of the rotary rod 14 far away from the head 16, the first boss 141, the rotary rod 14 and the head 16 together form a first accommodating portion 143, and the first boss 141, the second boss 142 and the rotary rod 14 together form a second accommodating portion 145. The first shaft sleeve 1331 is provided with a first through hole 1311 matched with the rotary rod 14 and a first through groove 1313 matched with the first boss 131; the second sleeve 133 is provided with a second through hole 1331 matched with the rotary rod 14 and a second through groove 1333 matched with the second boss 142. One end of the rotating rod 14 is accommodated in the first through hole 1311, the opposite end is accommodated in the second through hole 1331, and the first sleeve 133 is accommodated in the first accommodating portion 143, and the second sleeve 133 is accommodated in the second accommodating portion 145, so that the first sleeve 131 and the second sleeve 133 are connected to the rotating shaft 13. When the shaft 13 and the shaft sleeve are in a locked state, the first boss 141 is staggered with the first through slot 1313, and the second boss 142 is staggered with the second through slot 1333, i.e. the bosses abut against the first shaft sleeve 131 and the second shaft sleeve 133, so that the first shaft sleeve 131 and the second shaft sleeve 133 are fastened to the shaft 13 and are difficult to separate from the shaft 13. Compared with the prior art that the rotating shaft and the shaft sleeve are fixed by bolts and nuts, after the shaft sleeve is arranged on the rotating shaft 13, the shaft sleeve and the rotating shaft 13 can be locked by rotating the rotating shaft 13 to enable the boss to abut against the first shaft sleeve 131 and the second shaft sleeve 133, and the pitching assembly 10 is simple, convenient and quick to install.
Further, since the first shaft sleeve 131 is directly accommodated in the first accommodating portion 143, and the second shaft sleeve 133 is accommodated in the second accommodating portion 145, the rotating shaft 13 and the shaft sleeve can be installed without fixing the rotating shaft and the shaft sleeve by bolts and nuts, so that the force applied to each fan to drive the machine head assembly 30 to rotate along the vertical direction is the same.
In an embodiment of the present invention, the rotating rod 14 is radially provided with at least two first bosses 141 and at least two second bosses 142 that are spaced apart, the first shaft sleeve 131 is provided with at least two first through slots 1313 that are spaced apart and matched with the first bosses, and the second shaft sleeve 133 is provided with at least two second through slots 1333 that are spaced apart and matched with the second bosses. The at least two first bosses 141 have different widths, and the at least two second bosses 142 have different widths.
It will be appreciated that the first boss 141 and the second boss 142 have matching widths.
In an embodiment of the present invention, the rotating rod 14 is radially provided with at least three first bosses 141 and at least three second bosses 142, the first shaft sleeve 131 is provided with at least three first through grooves 1313 that are matched with the first bosses, and the second shaft sleeve 133 is provided with at least three second through grooves 1333 that are matched with the second bosses. The at least three spaced first bosses 141 have different widths, and the at least three spaced second bosses 142 have different widths.
It will be appreciated that the first boss 141 and the second boss 142 have matching widths.
The number and width of the first bosses 141 and the second bosses 142 may be set according to practical requirements, and optionally, the first bosses 141 and the second bosses 142 have matched widths, the first bosses 141 have different widths, and the second bosses 142 have different widths, so that the first shaft sleeve 131 and the second shaft sleeve 133 are difficult to separate from the rotating shaft 13.
The pitch assembly 10 further includes a bracket 11, where the bracket 11 includes a first side wall 111 and a second side wall 112 opposite to the first side wall 111, the first side wall 111 is sleeved on the rotating rod 14 and abuts against the joint portion 16 and the first shaft sleeve 131, and the second side wall 112 is sleeved on the rotating rod 14 and abuts against the second shaft sleeve 133.
It will be appreciated that the first sidewall 111 and the first sleeve 131 are received in the first receiving portion 143, and the second sidewall 112 and the second sleeve 133 are received in the second receiving portion 145.
The first sleeve 131 is disposed on the inner surface of the first sidewall 111, and the second sleeve 133 is disposed on the outer surface of the second sidewall 112.
The first sleeve 131 and the first sidewall 111 may be coupled by a retainer 1315. The retainer 1315 may be a screw or the like.
The first side wall 111 of the present invention is sleeved on the rotating rod 14 and abuts against the joint portion 16 and the first shaft sleeve 131, so that the first side wall 111 is connected with the rotating shaft 13, and the second side wall 112 is sleeved on the rotating rod 14 and abuts against the second shaft sleeve 133, so that the second side wall 112 is connected with the rotating shaft 13.
It will be appreciated that the first sidewall 111 and the first sleeve 131 are received in the first receiving portion 143, and the second sidewall 112 and the second sleeve 133 are received in the second receiving portion 145.
The first side wall 111 is provided with a plurality of spacing holes 1112, a receiving groove 1321 is concavely formed in an end face of the head 16, the receiving groove 1321 is opposite to the spacing holes 1112, the pitch assembly 10 further includes a spacing ball 15, the spacing ball 15 is received in the receiving groove 1321, and the spacing ball 15 is limited on a wall of a spacing hole 1112 when the head assembly 30 is driven by the pitch assembly 10 to rotate to a preset pitch angle along a vertical direction.
In an embodiment of the present invention, one end of the rotating shaft 13 is connected to the connecting wall 311 of the head assembly 30, and the other end of the rotating shaft is rotatably connected to the other connecting wall 311 after passing through the first side wall 111, the first shaft sleeve 131, the second side wall 112 and the second shaft sleeve 133, and the connecting wall 311 is rotated under the driving of the rotating shaft 13, so that the head assembly 30 can be rotated under the driving of the rotating shaft 13 of the pitching assembly 10.
The limiting ball 15 is accommodated in the accommodating groove 1321, and in the process that the head assembly 30 is driven by the pitching assembly 10 to rotate to a preset pitching angle in the vertical direction, the limiting ball 15 can roll along the first sidewall 111 and is limited on the wall of the corresponding limiting hole 1112. When the limit balls 15 are limited on the walls of the corresponding limit holes 1112, the nose assembly 30 can be maintained at the pitch angle without slipping down. By the cooperation between the limit ball 15 and the limit hole 1112, the user adjusts the position of the limit ball 15 to move the nose assembly 30 to a suitable pitch angle.
In an embodiment of the present invention, the first side wall 111 has a first end 1111 and a second end 1113 connected to the first end 1111, the first end 1111 is provided with the limiting hole 1112, and the second end 1113 is bent relative to the first end 1111 to form a slope 1114.
The head 16 has a concave receiving groove 1321 on one end surface, the receiving groove 1321 is disposed opposite to the limiting hole 1112, the pitch assembly 10 further includes a limiting ball 15, the limiting ball 15 is received in the receiving groove 1321, and the limiting ball 15 is limited on a wall of the limiting hole 1112 when the head assembly 30 is driven by the pitch assembly 10 to rotate to a preset pitch angle along a vertical direction.
The limiting holes 1112 are distributed on a circumference with an intersection point of the rotation central axis of the rotation shaft 13 and the plane of the first side wall 111 as a center and a distance between the intersection point and the limiting ball 15 as a radius.
The limiting ball 15 enters and is accommodated in the accommodating groove 1321 under the guidance of the inclined surface 1114, and when the nose assembly 30 is driven by the pitching assembly 10 to rotate to a preset pitching angle in the vertical direction, the limiting ball 15 is limited on the wall of the corresponding limiting hole 1112.
The second end 1113 of the first sidewall 111 is bent toward the second sidewall 112 to form the inclined surface 1114; the end surface of the rotating shaft 13 facing the inclined surface 1114 is provided with the receiving groove 1321.
During bending of the second end 1113 toward the second side wall 112, a portion of the second end 1113 is separated from the first end 1111 such that the second end 1113 may form a chamfer 1114. The chamfer 1114 may be an outer surface of the second end 1113.
At this time, the end surface of the rotating shaft 13 located outside the second end 1113 is provided with the receiving groove 1321.
The inclined surface 1114 has an inclination angle ranging from 5 ° to 45 °. Optionally, the inclination angle is 5 °, 10 °, 15 °, 20 °, 25 °, 30 °, 35 °, 40 °, or 45 °. The inclined angle of the inclined surface 1114 is set to 5 to 45 degrees so as to facilitate the safety of the limit ball 15 rolling along the inclined surface 1114 and being accommodated in the accommodation groove 1321.
It will be appreciated that the portion of the shaft 13 outside the second end 1113 is provided with a protrusion 132, and the surface of the protrusion 132 facing the second end 1113 is provided with the receiving groove 1321.
In an embodiment of the present invention, the second end 1113 is further bent to form a bent section 1115. The bent section 1115 can protect the user from being scratched during the process of installing the limit ball 15.
After the limit ball 15 is guided into and mounted to the receiving groove 1321 through the inclined surface 1114, the rotating shaft 13 can be rotated, so that the limit ball 15 is limited on the wall of a limit hole 1112. The position of the limiting ball 15, which is limited to the hole wall of the limiting hole 1112 closest to the accommodating groove 1321, is defined as an initial position 1117, and the rotating shaft 13 is continuously rotated, so that the limiting ball 15 is separated from the initial position 1117 and is continuously limited to the hole walls of other limiting holes 1112, so that the head assembly 30 has better stability in pitching motion.
The bracket 11 of the pitching assembly 10 is provided with a plurality of spacing holes 1112 which are arranged at intervals, the rotating shaft 13 can rotatably pass through the bracket 11, one end face of the rotating shaft 13 is concavely provided with a containing groove 1321, and the spacing ball 15 is contained in the containing groove 1321, so that when the nose assembly 30 is driven by the pitching assembly 10 to rotate to a preset pitching angle in the vertical direction, the spacing ball 15 is spacing on the hole wall of the corresponding spacing hole 1112, so that the nose assembly 30 can keep stable at the preset pitching angle. The limiting holes 1112 are distributed on a circumference with an intersection point of the rotation central axis of the rotation shaft 13 and the plane of the support 11 as a center of a circle and a distance between the intersection point and the limiting ball 15 as a radius, and the rotation track of the limiting ball 15 is also distributed on a circumference with an intersection point of the rotation central axis of the rotation shaft 13 and the plane of the support 11 as a center of a circle and a distance between the intersection point and the limiting ball 15 as a radius, that is, the limiting holes 1112 are distributed on a rotation track of the limiting ball 15, so that the head assembly 30 using the pitching assembly 10 has the advantage of smooth rotation.
Further, the second end 1113 of the first side wall 111 is bent toward the second side wall 112 to form the inclined surface 1114, so that a gap between the second end 1113 of the first side wall 111 and the end surface of the rotating shaft 13 is increased, and when the limit ball 15 is mounted in the receiving slot 1321, the limit ball 15 can enter under the guidance of the inclined surface 1114 and roll along the inclined surface 1114 to be received in the receiving slot 1321, so that the nose assembly 30 of the present invention has the advantage of simple installation.
The spacing between the adjacent edges of each adjacent limiting hole 1112 is 1.5-4 mm;
according to the technical scheme of the invention, the distance between the adjacent edges of each two adjacent limiting holes 1112 is 1.5-4 mm, so that the limiting ball 15 can easily rotate from one limiting hole 1112 to the next limiting hole 1112, and the head assembly 30 using the pitching assembly 10 has the advantage of smooth rotation. Meanwhile, by adjusting the interval between the edges of each two adjacent limiting holes 1112, the angle a of rotation of the nose assembly 30 in the vertical direction after the limiting ball 15 moves from one of the limiting holes 1112 to the other adjacent limiting hole 1112 can be adjusted.
The number of the limit holes 1112 is 9 to 16.
Optionally, the number of the limiting holes 1112 is 9, 10, 11, 12, 13, 14, 15, 16, or the like.
The number of the limiting holes 1112 in the technical scheme of the invention is 9-16, and the pitching angle range of the head assembly 30 applying the pitching assembly 10 is limited by arranging the number of the limiting holes 1112.
The first side wall 111 is further provided with a plurality of communicating grooves 19, and each two adjacent limiting holes 1112 are communicated by a communicating groove 19.
The bracket 11 of the invention is also provided with a plurality of communication grooves 19, and each two adjacent limiting holes 1112 are communicated by one communication groove 19, so that the limiting balls 15 can move through the communication grooves 19 to be limited on the walls of the limiting holes 1112 in the rotating process, the friction between the limiting balls 15 and the bracket 11 is reduced, and the limiting balls 15 can move normally.
After the limiting ball 15 moves from one limiting hole 1112 to the other adjacent limiting hole 1112, the angle a of rotation of the nose assembly 30 along the vertical direction is in the range of 5 ° to 20 °.
The angle a may be 5 °, 6 °, 7 °, 8 °, 10 °, 11 °, 12 °, 13 °, 14 °, 15 °, 16 °, 17 °, 18 °, 19 °, 20 °, etc. It will be appreciated that the angle a may also be set to other values.
It can be appreciated that the number of the limiting holes 1112 and the spacing between the edges of the adjacent limiting holes 1112 can be set according to actual needs to adjust the rotation angle of the nose assembly 30 after the limiting ball 15 moves from one of the limiting holes 1112 to the other adjacent limiting hole 1112.
The diameter of the limiting ball 15 is in the range of 4-6 mm.
It will be appreciated that the diameter of the stop ball 15 may be greater than the size of the stop aperture 1112.
According to the technical scheme, the diameter of the limiting ball 15 is in the range of 4-6 mm, and the diameter of the limiting ball 15 can be larger than the size of the limiting hole 1112, so that the limiting ball 15 can be limited on the wall of the limiting hole 1112.
The limiting hole 1112 has an elliptical structure with a width in the short axis direction thereof ranging from 2.5 to 3.3mm.
The width of the limiting hole 1112 along the short axis direction is smaller than the diameter of the limiting ball 15, so that the limiting ball 15 can be limited on the wall of the limiting hole 1112.
It is appreciated that the limiting aperture 1112 may be circular, square, rectangular, or irregularly shaped, etc.
Also, the stopper ball 15 moves in the short axis direction of the elliptical structure, so that the stopper ball 15 can be easily stopped at the next stopper hole 1112 through the stopper hole 1112.
The pitch assembly 10 further comprises a torsion spring 135 sleeved on the rotating shaft 13 and a limiting member 137 arranged on the rotating shaft 13, the torsion spring 135 comprises a first end 1351 and a second end 1353 which are oppositely arranged, the second side wall 112 is provided with a stop member 1123, the first end 1351 is limited on the limiting member 137, and the second end 1353 is stopped on the stop member 1123.
It will be appreciated that the torsion spring 135 is always in a normal compressed state. When the head assembly 30 is in the initial position, the torsion spring 135 is in a compressed state, and when the head assembly 30 rotates in the vertical direction, the torsion spring 135 is also in a compressed state.
The stopper 137 may be inserted into the rotation shaft 13 and partially expose the rotation shaft 13.
According to the technical scheme of the invention, the first end 1351 of the torsion spring 135 is limited on the limiting piece 137, the second end 1353 is stopped on the stopping piece 1223, and when the rotating shaft 13 rotates, the torsion spring 135 is screwed up due to the limiting effect of the limiting piece 137 and the stopping effect of the stopping piece 1223, and at the moment, the rotating shaft 13 generates a reactive pretightening force to prevent the machine head assembly 30 from sliding downwards.
The second side wall 112 is provided with a plurality of first openings 1121 arranged at intervals, the second sleeve 133 is provided with a second opening 1335 corresponding to the first opening 1121, and the stop member 1123 passes through the second opening 1335 and the first opening 1121 to stop the second end 1353 of the torsion spring 135.
The portion of the stop 1123 passing through the second sidewall 112 and the second bushing 133 forms a stop end 1125, the stop end 1125 stopping the second end 1353 of the torsion spring 135.
The second side wall 112 of the present invention is provided with a plurality of first openings 1121 spaced apart, the second sleeve 133 is provided with a second opening 1335 corresponding to the first opening 1121, and the stopper 1123 passes through one of the second openings 1335 and the first opening 1121 to stop the second end 1353 of the torsion spring 135.
It will be appreciated that by locating the stop 1123 in the different first and second openings 1121, 1335, the stop 1123 differs in terms of the stopping force against the second section 1353 of the torsion spring 135. Accordingly, the position, number and spacing of the first and second openings 1121, 1335 may be set as desired, and the stop force of the stop 1123 against the second end 1353 of the torsion spring 135 may be adjusted by locating the stop 1123 in the adapted first and second openings 1121, 1335.
The pitch assembly 10 further includes an elastic member 17 accommodated in the accommodation groove 1321, one end of the elastic member 17 abuts against the bottom wall of the accommodation groove 1321, and the other end abuts against the limit ball 15.
The elastic member 17 may be a spring.
It will be appreciated that the resilient member 17 is movable along the ramp 1114 and is received within the receiving slot 1321.
The limiting ball 15 is movably disposed in the receiving groove 1321 through the elastic member 17, and a fixed pre-tightening force is applied to the elastic member 17 through the limiting action of the bottom wall and the first sidewall 111 of the receiving groove 1321, and the elastic member 17 is in a long compressed state. When the nose assembly 30 is tilted up or down in the vertical direction, the limit ball 15 moves from one limit hole 1112 to the other limit hole 1112, and during this process, the elastic member 17 is further compressed and then slowly released, and since the elastic member 17 is always in a long compressed state, after the limit ball 15 moves to the other limit hole 1112, the elastic member 17 applies an elastic force to the limit ball 15 to stop it against the wall of the limit hole 1112 and/or the periphery of the wall of the hole, so that the nose assembly 30 can be kept at a tilt angle without sliding down.
Referring to fig. 11-14, the present invention further provides a nose mechanism 100, including a nose assembly 30 and a rotating assembly 50, and further including a pitching member 10, where the nose assembly 30 is connected to the pitching assembly 10, and the pitching assembly 10 drives the nose assembly 30 to rotate in a vertical direction to a preset pitching angle; the rotating assembly 50 is connected with the pitching assembly 10 and is located below the pitching assembly 10, and the rotating assembly 50 drives the nose assembly 30 to rotate in the horizontal direction.
Since the handpiece mechanism 100 adopts all the technical solutions of all the embodiments, at least the beneficial effects of the technical solutions of the embodiments are provided, and will not be described in detail herein.
The handpiece assembly 30 includes a motor bracket 31, and the motor bracket 31 includes two opposite connection walls 311, and each connection wall 311 is connected to one end of the rotation shaft 13. In an embodiment of the present invention, both ends of the rotating shaft 13 are convexly provided with protruding ends (not shown), and the protruding ends can be connected with the corresponding connecting walls 311. The two ends of the rotating shaft 13 are respectively connected with the corresponding connecting walls 311, so that when the rotating shaft 13 rotates, the connecting walls 311 can be driven to rotate, and the nose assembly 30 can be driven to rotate by the pitching assembly 10.
It will be appreciated that the pitch direction shown in fig. 7 is the direction in which the head assembly 30 rotates in the vertical direction.
In one embodiment of the present invention, the pitch angle ranges are: -10-120 °, -10-140 °, -10-90 °, -10-110 °, -20-120 °, -20-130 °, -20-90 °, -20-110 °, -30-120 °, -30-110 °, -30-100 °, or-30-90 °, etc.
Optionally, the pitch angle is: -30 °, -25 °, -20 °, -15 °, -10 °, -5 °, -3 °, 10 °, 20 °, 30 °, 40 °, 50 °, 60 °, 70 °, 80 °, 90 °, 100 °, 110 °, 120 °, 130 °, or 140 °. It will be appreciated that the nose assembly 30 may be manually adjusted to a desired pitch angle as desired.
It will be appreciated that nose assembly 30 performs a pitching motion along rotational centerline B. The rotation shaft 13 also rotates along the rotation center line B. The nose assembly 30 and the pitch assembly 10 rotate horizontally along the rotation centerline C, i.e., the rotation centerline of the rotor assembly 50 is C.
When the head assembly 30 is tilted up by 90 ° along the rotation center line B, the rotation center line B intersects with the rotation center line C, and the rotation center line D of the main motor 33 of the head assembly 30 coincides with the rotation center line C of the rotating assembly 50. At this time, the center of gravity of the nose mechanism 100 is relatively centered, so that the center of gravity of the nose mechanism 100 is relatively stable, and the nose mechanism is not easy to fall over. As the nose assembly 30 is tilted up 90 along the rotational centerline B, the nose assembly 30 blows "upward" toward the top.
The driving mechanism comprises a pitching assembly 10 and a rotating assembly 50, wherein the nose assembly 30 is connected with the pitching assembly 10, the nose assembly 30 rotates to a preset pitching angle in the vertical direction through the pitching assembly 10, the rotating assembly 50 is connected with the pitching assembly 10 and is positioned below the pitching assembly 10, the rotating assembly 50 drives the nose assembly 30 and the pitching assembly 10 to rotate in the horizontal direction, and when the nose assembly 30 is driven by the pitching assembly 10 to be at a preset pitching angle, the nose assembly 30 can also rotate in the horizontal direction under the driving of the rotating assembly 50. Because the rotating assembly 50 is positioned below the pitching assembly 10, the pitching assembly 10 only drives the nose assembly 30 to rotate in the vertical direction, so that the rotating assembly 50 does not perform pitching motion and collision with the pitching assembly 10 is avoided, and therefore, the fan has a larger pitching angle.
Moreover, the pitching assembly 10 is located between the head assembly 30 and the rotating assembly 50, and after the head assembly 30 is driven by the pitching assembly 10 to rotate to a preset angle in the vertical direction, the rotating assembly 50 drives the head assembly 30 and the pitching assembly 10 to rotate in the horizontal direction. Compared with the prior art, the pitching assembly supports the machine head assembly and the left-right shaking assembly, and after the machine head assembly and the left-right shaking assembly rotate to a preset angle along the vertical direction, the left-right shaking assembly also drives the machine head assembly to rotate in the horizontal direction. The technical scheme of the invention can ensure that the fan runs stably and the gravity center is stable, so that the turnover is not easy to occur.
Further, after the head assembly 30 is driven by the pitching assembly 10 to rotate to a predetermined angle in the vertical direction, the rotating assembly 50 drives the head assembly 30 and the pitching assembly 10 to rotate in the horizontal direction. Compared with the prior art, after the machine head assembly and the left and right head shaking assembly rotate to a preset angle along the vertical direction, the fan forms the preset angle between the left and right head shaking assembly and the pitching assembly in the horizontal rotation process, and the left and right head shaking assembly does a back and forth shearing action relative to the pitching assembly. The technical scheme of the invention has the advantage of strong safety, and can not hurt fingers.
The pivot assembly 50 includes a support member 51, and the tilt assembly 10 further includes a bottom wall 113 coupled to the first and second side walls 111, 112, the support member 51 being coupled to the bottom wall 113.
The support member 51 of the present embodiment is connected to the bottom wall 113 of the pitch assembly 10. Such that the rotation assembly 50 rotates the pitch assembly 10 and the head assembly 30 through the connection between the support 51 and the bottom wall 113.
The rotating assembly 50 comprises a motor 53, the motor 53 is provided with an output shaft 531, the rotating assembly 50 further comprises a crank 533 sleeved on the output shaft 531, a connecting rod 535, a positioning piece 537 and a connecting column 536 arranged on the positioning piece 537, one end of the connecting rod 535 is connected with the crank 533, the other end of the connecting rod 535 is connected with the connecting column 536, the supporting piece 51 is rotatably arranged on the positioning piece 537, and the motor 53 drives the handpiece assembly 30 and the pitching assembly 10 to rotate in the horizontal direction through the output shaft 531, the crank 533, the connecting rod 535, the connecting column 536, the supporting piece 51 and the bottom wall 113.
In an embodiment of the present invention, the motor 53 is disposed at one end of the supporting member 51, and a through hole (not labeled) is disposed at the other end of the supporting member 51, and the supporting member 51 is rotatably sleeved on the positioning member 537 through the through hole.
Link 535 is rotatably connected to connecting post 536.
When the motor 53 in the technical scheme of the invention drives the output shaft 531 to rotate, the output shaft 531 drives the crank 53 to rotate, and drives the connecting rod 535 and the supporting piece 51 connected with the crank 53 to rotate, so as to drive the nose assembly 30 and the pitching assembly 10 to rotate in the horizontal direction.
The driving mechanism further comprises a wire harness 70, the machine head assembly 30 comprises a main motor 33, the positioning piece 537 is further provided with a containing cavity 5371, the supporting piece 51 is provided with a through hole 511, and the wire harness 70 sequentially penetrates through the containing cavity 5371, the through hole 511 and the pitching assembly 10 and is connected with the main motor 33.
The central axis of the accommodating cavity 5371 may coincide with the rotation center line C of the rotating assembly 50, so that the rotating assembly 50 is less affected by the horizontal rotation during the process of driving the pitching assembly 10 and the head assembly 30 to rotate in the horizontal direction, and the wire harness 70 accommodated in the accommodating cavity 5371 is less susceptible to wear, thereby having a longer service life.
The main motor 33 drives the output shaft 331 to rotate, so as to drive the fan blades 35 connected with the output shaft 331 to rotate.
It will be appreciated that the blades 35 of the fan head are rotatable about the central axis D of the output shaft 331.
The wire harness 70 according to the present invention sequentially passes through the accommodating chamber 5371 and the via hole 511 to be connected with the main motor 33 to supply electric power to the main motor 33.
Further, after the nose assembly 30 is at a pitch angle, the nose assembly 30 rotates left and right along the horizontal rotation center C in the horizontal direction, and the fan blades 35 also rotate around the central axis D, so that a larger negative pressure is generated at the fan head, more air is sucked in, and the fan blades 35 can blow out larger wind with a larger wind speed. Therefore, the fan of the invention has the advantages of long air supply distance and strong wind speed.
In an embodiment of the present invention, the fan blades 35 include a main fan blade 351 and a kilo-leaf 353, a plurality of main fan blades 351 are fixedly arranged on the hub, the kilo-leaf 353 is arranged between adjacent main fan blades 351, and the kilo-leaf 353 and the main fan blades 351 are arranged in a duck-type arrangement in the axial direction of the hub. When the fan head rotates, the air flow on the air inlet side is accelerated by the thousand-leaf 353 to form a separation vortex which interferes with the air flow of the main fan blade 351, and suction force for taking away the backflow accumulated on the front edge of the root of the main fan blade 351 is generated on the suction surface of the main fan blade 351, so that the air flow on the front edge of the root of the main fan blade 351 is smooth, the actual acting area is increased, and therefore, the inner flow quality of the fan head is good and the efficiency is high. The fan head has larger air supply range, longer air supply distance and faster air speed.
Generally, the position of the thousand leaves 353 in the axial direction of the hub is upstream of the main blades 351 with respect to the air flow flowing through the fan head, so that the quality of the flow in the fan head is better.
In the embodiment of the present invention, the main fan blade 351 and the kilo blade 353 are respectively designed for forward bending and backward bending, and the kilo blade 353 adopts a backward bending front edge and a straight rear edge, and the rear edge has a forward-bending angle. Wherein, the thousand leaves 353 and the main fan blades 351 are arranged on the hub in an upper duck type layout. It should be noted that, the kilo-leaf 353 and the main fan blade 351 may be arranged on the hub in a lower duck-type layout, so as to enhance the flexibility of the fan head design. It should be appreciated that the main fan blade 351 may also be a swept or straight blade design.
The handpiece mechanism 100 further includes a mask 37, and the fan blades 35 are accommodated in the mask 37.
An output shaft 331 of the main motor 33 is connected to the fan blade 35 through the mask 37.
In the process of assembling the machine head assembly 30, the appearance parts of the fan are not required to be assembled, so that the appearance parts are not required to be protected in the process of assembling the machine head assembly 30, and the production qualification rate is greatly improved. The appearance piece can be a shell of the fan, a button and other parts.
The invention also provides a household appliance with the pitching function. The household appliance may be a fan, an electric fan, a hand-held fan, a ceiling fan, or a warmer, etc.
The household appliance adopts all the technical schemes of all the embodiments, so that the household appliance has at least all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted.
In one embodiment of the invention, the household appliance is a fan, which includes a support assembly. The fan further includes the handpiece mechanism 100, and the support assembly supports the handpiece mechanism 100. In one embodiment of the invention, the fan may include a post 90, and the post 90 may have a cylindrical structure. The rotating assembly 50 is disposed on the upright 90. So that no shearing action is generated between the rotating assembly 50 and the upright 90, preventing the user's hand from being pinched.
The foregoing description of the preferred embodiments of the present invention should not be construed as limiting the scope of the invention, but rather should be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the following description and drawings or any application directly or indirectly to other relevant art(s).