[ Invention ]
The purpose of this design is to provide a new electronic cushion of getting up, can be lighter and thinner, realizes in narrow altitude space, and when driving part was in the initial state that the level was not had the contained angle, the drive shaft did not have the dead point, also can drive to rise the settlement load.
The purpose of this design is realized through following technical scheme:
The utility model provides an electronic cushion of getting up, includes base, bearing, the atress pole, drive unit and the guide component of with base and bearing swing joint, the guide component is fixed to the base, the drive unit includes power portion, and with the drive shaft of power portion interlock, the drive shaft includes the gyro wheel component of rotatory installation in drive shaft one end, the drive shaft is interlocked with the atress pole, the gyro wheel component of drive shaft bears on the guide component, the power portion drive the drive shaft, the gyro wheel component of guide member guide drive shaft rises or descends, drive shaft drive atress pole motion, atress pole interlock base and bearing relative motion.
Further, the guide member is formed with a guide surface on which the roller member of the drive shaft is carried, the guide surface being increased or decreased in height along the rolling direction of the roller member.
Further, the guide surface is an inclined plane, or the section of the guide surface is arc-shaped, or the section of the guide surface is formed by combining a plurality of arcs, or the section of the guide surface is formed by combining an elliptic arc and an arc, or the guide surface is formed by connecting/combining a plurality of step parts.
Further, the atress pole includes actuating lever and interlock pole, the one end and the base of actuating lever rotate to be connected, and the other end limit of actuating lever is located the bearing, the one end of interlock pole is spacing in the base, and the other end and the bearing of interlock pole rotate to be connected, drive shaft and actuating lever interlock.
Further, the stress rods are provided with two groups, each stress rod comprises a driving rod and a linkage rod which are matched with each other, and the guide member is positioned between the two groups of stress rods.
Further, the driving part is located between the two groups of stress rods, the power part is a linear motor, and roller members are respectively installed on two sides of one end of the driving shaft.
Further, the other end of the driving rod is limited on the bearing seat in a sliding way, and one end of the linkage rod is limited on the base in a sliding way.
Further, the driving rod and the linkage rod are arranged in a crossing way, and the crossing positions of the driving rod and the linkage rod are connected in a mutually rotating way.
Further, the atress pole includes actuating lever and trace, the one end and the base of actuating lever rotate to be connected, and the other end and the bearing of actuating lever are fixed, the one end of trace is spacing in the base, and the other end and actuating lever or the bearing of trace rotate to be connected, drive shaft and actuating lever interlock.
Further, a driving track is arranged on the driving rod, and the driving shaft moves according to the driving track to push the driving rod so as to be linked with the driving rod.
Further, the driving track is a chute, a driving part protruding into the chute is formed on the driving shaft, and the driving shaft pushes the driving rod to realize linkage with the driving rod through the driving part.
Further, the driving rod is rotatably connected with the base to form a rotating shaft, and the center line of a moving track of the driving part of the driving shaft on the driving rod is collinear with the axis point of the rotating shaft.
Further, when the electric getting-up cushion is in the initial state, the axis of the drive shaft is horizontally disposed.
Compared with the prior art, the design has the advantages that the design is lighter and thinner, the driving part is in an initial state without an included angle in a narrow height space, the driving shaft has no dead point, and the set load can be pushed forward and lifted.
[ Detailed description ] of the invention
Hereinafter, a specific embodiment of the electric lift seat cushion of the present design will be described with reference to fig. 1 to 6. It should be noted that, without conflict, the embodiments of the present design and features of the embodiments may be combined with each other.
In the description of the present design, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediate medium, or in communication between two elements. The specific meaning of the terms in this design will be understood by those of ordinary skill in the art in a specific context.
In the description of the present design, it is to be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1 to 4, an electric cushion for getting up according to the present application includes a flat plate-shaped base 1, a flat plate-shaped seat 2, a force-receiving rod 3 movably connecting the base 1 and the seat 2, a driving unit 4, and a guiding member 5, wherein the guiding member 5 is fixed to the base 1, and the driving unit 4 includes a power portion 41 and a driving shaft 42 coupled with the power portion 41. The driving shaft 42 includes a roller member 421 rotatably mounted at one end of the driving shaft 42, and the driving shaft 42 is coupled to the force receiving rod 3. One end (the end far away from the roller member 421) of the driving part 4 is rotatably connected with the base 1.
The guiding member 5 forms a guiding surface 51, the roller member 421 of the driving shaft 42 is carried on the guiding surface 51, the driving shaft 42 is driven by the power portion 41, the guiding surface 51 guides the roller member 421 of the driving shaft 42 to roll, the driving shaft 42 drives the force-receiving rod 3 to move, and the force-receiving rod 3 is linked with the bearing seat 2 and the base 1 to move relatively. In the present application, the power unit 41 is a linear motor, but may be other embodiments, such as an oil cylinder. The function of the power section 41 is to enable the drive shaft 42 to expand and contract in the extending direction.
Referring to fig. 1 to 4, the height of the guide surface 51 increases or decreases along the rolling direction of the roller member 421. Specifically, the guide surface 51 increases in height in the direction of extension of the driving member 4. In some embodiments, the guide surface 51 may be an inclined plane, or in other embodiments, the cross-section of the guide surface 51 (a vertical cross-section through the axis of the drive shaft 42) may be curved, or in other embodiments, the cross-section of the guide surface 51 may be a combination of multiple arcs, or in other embodiments, the cross-section of the guide surface 51 may be a combination of an elliptical arc and an arc. The arc shape of the application can be arc shape or elliptical arc shape. Of course, in other embodiments, the cross-section of the guide surface 51 may be a combination of an inclined plane and an arc.
The cross-sectional shape of the guide surface 51 determines the output force of the driving member 4 when the seat 2 is under constant load and the driving shaft 42 is pushed at a constant speed. In order to make the output force of the driving component 4 on the whole stroke relatively balanced, through multiple stress experiments, it is verified that the cross section of the guide surface 51 is preferably formed by combining an elliptical arc shape and a circular arc shape, the diameter of the circular arc section of the guide surface 51 is larger than that of the roller member 421, and the circular arc section of the guide surface 51 is smoothly and tangentially connected with the elliptical arc section. The output force of the driving part 4 on the whole stroke is relatively balanced, so that the service life of the driving part 4 can be prolonged.
Referring to fig. 1 to 4, the force-receiving rod 3 includes a driving rod 31 and a linkage rod 32. One end of the driving rod 31 is rotatably connected with the base 1, the other end of the driving rod 31 is limited on the bearing seat 2, specifically, the other end of the driving rod 31 is limited on the bearing seat 2in a sliding manner (specifically, rollers (not labeled) are arranged on the other end of the driving rod 31 in a group, a slideway (not labeled) is arranged at a position corresponding to the bearing seat 2, the rollers are correspondingly limited in the slideway and can roll in the slideway), and the driving rod 31 is linked with the driving shaft 42.
One end of the linkage rod 32 is limited on the base 1, the other end of the linkage rod 32 is rotatably connected with the bearing seat 2, and specifically, one end of the linkage rod 32 is limited on the base 1 in a sliding manner (similarly, the cooperation of rollers and a slideway structure can also be designed).
The driving rod 31 and the linkage rod 32 are arranged in a crossing way, and the crossing parts of the driving rod 31 and the linkage rod 32 are mutually connected in a rotating way to form a scissor arm structure.
The force-bearing rods 3 are provided with two groups, each group of force-bearing rods 3 comprises a driving rod 31 and a linkage rod 32 which are matched with each other, and the guide member 5 is positioned between the two groups of force-bearing rods 3. The driving component 4 is located between the two groups of stress rods 3, and roller members 421 are respectively installed on two sides of one end of the driving shaft 42. Specifically, two sides of one end of the driving shaft 42 respectively protrude to form a driving portion 420, and the roller member 421 is correspondingly sleeved on the driving portion 420.
Referring to fig. 1,3 and 4, the driving rod 31 is provided with a driving track 311, and the driving shaft 42 moves along the driving track 311 to push the driving rod 31 and further couple with the driving rod 31. Specifically, the driving track 311 is a sliding groove (in the present application, the sliding groove is an elongated through groove structure penetrating the driving rod 31), the end of the driving portion 420 protrudes into the sliding groove (driving track 311), and the driving shaft 42 abuts against the driving rod 31 via the driving portion 420 to realize linkage. In other embodiments, the driving portion 420 may be a rotating shaft structure assembled to the end of the driving shaft 42.
Of course, in other embodiments, the driving track 311 may also be provided with a rib-shaped slide (not shown) protruding outwards from the surface of the driving rod 31, and the driving portion 420 may be designed to be a matching structure for sliding and limiting with the rib-shaped slide (for example, may be designed to be a pulley mechanism for clamping the upper and lower sides of the rib-shaped slide). Of course, other similar slip fit arrangements are also possible.
Referring to fig. 1, 3 and 4, the driving rod 31 is rotatably connected to the base 1 to form a rotation shaft 30, and the driving track 311 on the driving rod 31 is set to be collinear with the axial center point of the rotation shaft 30, so that the center line of the movement track of the driving part 420 on the driving rod 31 is collinear with the axial center of the rotation shaft 30. Further, when the electric rising seat cushion is in the initial state, the axis of the drive shaft 42 is disposed horizontally. Thus, the height of the electric rising seat cushion in the initial state can be reduced as much as possible.
It should be noted that, the initial state of the electric lifting cushion described herein refers to a state when the seat 2 is folded with the base 1, that is, a state shown in fig. 2.
Referring to fig. 5 and 6, a second embodiment of an electric cushion for getting up according to the present application is different from the first embodiment shown in fig. 1 to 4 in that the structure of the force bar 3' is different, in that one end of the driving bar 31' is rotatably connected with the base 1', the other end of the driving bar 31' is fixed with the seat 2', one end of the linkage bar 32' is limited on the base 1' (specifically, one end of the linkage bar 32' is provided with rollers (not labeled) in a group, a slide (not labeled) is provided at a corresponding position of the base 1', and the rollers are correspondingly limited in the slide and can roll in the slide). The other end of the link lever 32' is rotatably connected to the driving lever 31' or the socket 2' (in the present application, the other end of the link lever 32' is rotatably connected to the middle position of the driving lever 31 '). The drive shaft 42 'is interlocked with the drive rod 31'.
Of course, when the power unit 41 is a linear motor, the electric cushion for getting up may further include a rechargeable lithium battery, and the lithium battery is mounted on the base 1 and is used for supplying power to the power unit 41.
The operation of the electric lift cushion of the present application will be described in detail with reference to the drawings.
In the initial state, as shown in fig. 2, the base 1 and the seat 2 are disposed substantially horizontally, the driving shaft 42 is also disposed substantially horizontally, and the roller member 421 at one end of the driving shaft 42 is disposed at the lowest position of the guiding surface 51.
In the process state, as shown in fig. 3, the driving shaft 42 is driven to extend by the power unit 41, and the roller member 421 gradually rolls upwards along the guiding surface 51, so that the driving shaft 42 pushes the driving rod 31 through the driving unit 420 according to the driving track 311, and the driving rod 31 swings upwards along the rotation shaft 30, so as to drive the bearing seat 2 to move obliquely upwards.
In the highest state, as shown in fig. 4, the driving part 420 is moved from one end to the other end of the driving track 311, so that the socket 2 is moved obliquely upward to the highest position.
The electric standing-up cushion is mainly used for being placed on a stool or a chair to assist a patient with poor legs and feet or waist or old people to stand. Can provide an auxiliary standing stroke for the old or the patient to sit for a long time.
In the second embodiment of the present application, the seat 2' can realize a larger angle change than the first embodiment in the process of moving from the initial state to the highest state, and can be suitable for devices requiring angle adjustment, such as lifting of the back of a patient bed person.
Of course, in other embodiments, the force-bearing rod 3 may be configured to be formed by combining a plurality of driving rods 31 and a plurality of linking rods 32, wherein the driving rods and the linking rods are overlapped in a two-to-two crossing manner, and the form of overlapping two X-shapes is similar. Forming a multi-wishbone structure.
Referring to fig. 7, a further embodiment of the guiding member 5 of the electric rising seat cushion according to the present application is shown, in which the guiding surface 51 "of the guiding member 5" is not designed as a smooth arc surface or a smooth plane. In this embodiment, the guide surface 51″ is formed by connecting a plurality of stepped portions (reference numerals, similar to the structure of the steps), and the plurality of stepped portions are increased in height along the extension direction of the driving shaft 42. In this embodiment, the steepness of the guide surface 51 "can be adjusted by adjusting the length and height of the step near different positions of the guide surface 51", thereby adjusting the output force of the drive member 4 to relatively equalize the output force of the drive member 4 over the full stroke.
Of course, another modification may be formed on the basis of fig. 7, specifically, the guide surface 51 "of the guide member 5" is formed by combining a plurality of steps (not shown), and any two adjacent steps are separated by a gap, but the heights of the steps increase gradually along the extension direction of the driving shaft 42.
In other words, the guiding surface 51 in the present application is actually a virtual surface, which does not necessarily refer to a physical plane. The guide surface 51 mainly serves to guide the roller member 421 to rise, thereby driving the driving lever 31 to swing upward.
The electric getting-up cushion of the present application can make the driving shaft 42 be designed to be parallel to the base 1 mainly by the design of the guide member 5, so that the electric getting-up cushion can be designed to be lighter and thinner.
Finally, it should be noted that the foregoing embodiments are merely for illustrating the technical solution of the present design and are not limiting, and although the present design has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solution described in the foregoing embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not depart from the scope of the technical solution of the embodiments of the present design in essence of the corresponding technical solution.