CN209916421U

CN209916421U - Sidesway mechanism and wheelchair

Info

Publication number: CN209916421U
Application number: CN201920573625.5U
Authority: CN
Inventors: 戴志荣
Original assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd
Current assignee: Guangzhou Shiyuan Electronics Thecnology Co Ltd
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2020-01-10
Anticipated expiration: 2029-04-23

Abstract

The utility model relates to a wheelchair technical field, and specifically disclose a side mechanism and wheelchair of moving, wherein, the side mechanism of moving includes the support frame, handrail frame, elastic element and roll round pin, set up first through-hole on the support frame, the second through-hole has been seted up to handrail frame's first end, handrail is connected to handrail frame's second end, the terminal surface of handrail frame's first end still is equipped with curved cam surface, the circumference center and the second through-hole of cam surface are concentric, the cam surface is the inclined plane, elastic element sets up between support frame and handrail frame, elastic element has the trend that the support frame was kept away from to the drive handrail frame orientation one side removed all the time, the roll round pin is including selling the body, the one end of selling the body sets up the limiting plate, the other end passes first through-hole and second through-hole in. The utility model discloses a mechanism is moved to side simple structure, and stability is high, and the handrail is rotatable to the below of wheelchair, does not occupy the space on wheelchair upper portion.

Description

Sidesway mechanism and wheelchair

Technical Field

The utility model relates to a wheelchair technical field especially relates to a side mechanism and contain this wheelchair of side mechanism of moving.

Background

The wheelchair is an important tool for rehabilitation, not only is the wheelchair used as a travel tool for physically disabled persons and persons with mobility disabilities, but also more importantly, the wheelchair is used for physical exercise and participating in social activities.

Wheelchairs are often provided with armrests for supporting the arms of the user. The setting mode of handrail has the multiple, for example, the handrail is fixed on the wheelchair or the one end of handrail articulates on the back, fixed knot constructs the handrail can not satisfy the requirement that the user side got off, and the handrail that the upset was removed articulates on the back owing to its one end, the free end is used for supporting user's arm, there is the problem that support intensity is low, and the handrail laminating after the upset is in the both sides of back, can occupy the space on the back, occupy wheelchair upper portion space promptly, the user of not being convenient for uses.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an aim at: the side shifting mechanism is simple in structure and good in stability.

The embodiment of the utility model provides a another aim at: a wheelchair is provided in which the armrest is laterally movable without occupying the upper space of the wheelchair.

To achieve the purpose, the embodiment of the present invention adopts the following technical solutions:

in a first aspect, there is provided a side shift mechanism comprising:

the supporting frame is provided with a first through hole;

the armrest frame is characterized in that a second through hole is formed in the first end of the armrest frame, the second end of the armrest frame is connected with an armrest, an arc-shaped cam surface is further arranged on the end face of the first end of the armrest frame, the circumferential center of the cam surface is concentric with the second through hole, and the cam surface is an inclined surface;

the elastic element is arranged between the support frame and the armrest frame and always has a tendency of driving the armrest frame to move towards one side far away from the support frame;

the rolling pin comprises a pin body, one end of the pin body is provided with a limiting plate, the other end of the pin body sequentially penetrates through the first through hole and the second through hole, and the pin body is provided with a butting part abutted against the cam surface.

As a preferred scheme of side mechanism of moving, the support frame with still be provided with the extension spring between the handrail frame, the extension spring has the pulling all the time handrail frame for the support frame rotates in order to be located the motion trend of closing the state, works as handrail frame is located when closing the state, handrail frame rotates extremely the top of support frame.

As a preferable scheme of the side shift mechanism, the cam surface is arranged on one side of the handrail frame close to the support frame; or the cam surface is arranged on one side of the armrest frame, which is deviated from the support frame.

As a preferable scheme of the side shift mechanism, the limit plate is a first handle connected to the end part of the pin body, and the first handle can drive the pin body to rotate along the axis of the pin body; or the like, or, alternatively,

one end of the pin body, which is far away from the limiting plate, is provided with a first handle, and the first handle can drive the pin body to rotate along the axis of the pin body.

As a preferable scheme of the side shift mechanism, the armrest frame includes a frame body and a cam member detachably disposed at one end of the frame body, the cam surface and the second through hole are both disposed on the cam member, and the armrest is mounted at one end of the frame body away from the cam member.

As a preferable scheme of the side shift mechanism, the cam member includes a cam body and two connecting plates fixedly connected to the cam body, the two connecting plates are arranged at intervals along a thickness direction of the cam body, the connecting plates are provided with third through holes, the frame body is provided with fourth through holes corresponding to the third through holes, and the two connecting plates are respectively arranged on two opposite sides of the frame body and connected to the frame body through screws.

As a preferred scheme of the side-shifting mechanism, a fixing column is convexly arranged on one side of the support frame close to the armrest frame, the fixing column is provided with a first through hole in a penetrating manner, a first limit plane is arranged on the periphery of one end, far away from the support frame, of the fixing column, a second limit plane is arranged in the second through hole and corresponds to the first limit plane, one end, far away from the support frame, of the fixing column is in plug-in fit with the second through hole, and the first limit plane is abutted against the second limit plane to limit the armrest frame to rotate relative to the support frame.

As a preferable scheme of the side shift mechanism, the elastic element is a spring, the spring is sleeved on the fixed column, and two ends of the spring are respectively abutted against the support frame and the armrest frame.

The second scheme provides a wheelchair, which comprises a wheelchair body, wherein the side-shifting mechanisms are arranged on two sides of the wheelchair body.

The wheelchair comprises a wheelchair body, wherein the wheelchair body comprises a cushion support, a backrest support, a rear wheel support and a front wheel support, the backrest support is hinged to the rear end of the cushion support through a first hinged shaft, a first limiting mechanism for limiting the relative rotation of the backrest support and the cushion support is arranged between the backrest support and the cushion support, the rear wheel support is hinged to the rear end below the cushion support through a second hinged shaft, the front wheel support is hinged to the front end below the cushion support through a third hinged shaft, and a second limiting mechanism for limiting the relative rotation of the cushion support and the rear wheel support is arranged between the cushion support and the rear wheel support.

As a preferred scheme of the wheelchair, the first limiting mechanism comprises a locking shaft, at least one end of the locking shaft is fixedly provided with a clamping hook, and the first hinged shaft or the backrest support is fixedly provided with a first bayonet in clamping fit with the clamping hook.

As a preferable proposal of the wheelchair, the locking shaft is fixedly provided with a second handle.

As a preferred scheme of wheelchair, second stop gear includes first connecting rod, the one end of first connecting rod with the back support is articulated, and the other end is provided with the lockplate, be equipped with the second bayonet socket on the lockplate, be provided with spacing post on the rear wheel support, spacing post with the cooperation of pegging graft of second bayonet socket, in order will the rear wheel support with position between the cushion support is fixed, spacing post with second articulated shaft interval sets up.

As a preferable scheme of the wheelchair, the rear wheel bracket is connected to the front wheel bracket through a second connecting rod, and two ends of the second connecting rod are respectively hinged to the rear wheel bracket and the front wheel bracket.

As a preferred scheme of the wheelchair, one end of the rear wheel bracket is connected with the cushion bracket, the other end of the rear wheel bracket is provided with a rear wheel, and the position of the second connecting rod hinged with the rear wheel bracket is positioned between the limiting column and the rear wheel.

The utility model discloses beneficial effect does: through setting up roll pin and cam surface, can realize on a mechanism with handrail frame axial displacement and for the support frame rotation, simplified the rotation of handrail frame and the structure of locking, and then simplified the structure of whole side shift mechanism, and handrail frame is down pivoted when the open mode, consequently can not occupy the space of side shift mechanism top, can not occupy the upper portion space of wheelchair promptly.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Fig. 1 is a schematic side view of a wheelchair according to an embodiment of the present invention (the side-shifting mechanism is in a retracted state).

Figure 2 is a schematic side view of a wheelchair (during side-shift mechanism opening) in accordance with an embodiment of the present invention.

Figure 3 is a side view of a wheelchair (side-shift mechanism in an open position) in accordance with an embodiment of the present invention.

Fig. 4 is a partial schematic structural view of a folding state of a side shift mechanism according to an embodiment of the present invention.

Fig. 5 is a partial schematic structural view of the side shift mechanism according to the embodiment of the present invention in an open state.

Fig. 6 is a schematic perspective view of a side shift mechanism according to an embodiment of the present invention.

Fig. 7 is an exploded view of fig. 6.

Fig. 8 is a schematic perspective view of a wheelchair according to an embodiment of the present invention.

Figure 9 is a side view of a wheelchair in accordance with an embodiment of the present invention (when the wheelchair is deployed).

Figure 10 is a side view of a wheelchair in accordance with an embodiment of the present invention (during folding of the wheelchair).

Fig. 11 is a schematic side view of a wheelchair according to an embodiment of the present invention (with the wheelchair folded).

Fig. 12 is a schematic perspective view of the folded wheelchair according to the embodiment of the present invention.

Fig. 13 is an enlarged schematic view of fig. 12 at a.

Fig. 14 is a perspective view of the wheelchair according to the embodiment of the present invention (when the wheelchair is unfolded).

Fig. 15 is a partially enlarged view of a portion B in fig. 14.

In the figure:

1. a support frame; 101. a first through hole; 102. fixing a column; 103. a first limit plane; 104. a limiting ring; 2. a handrail frame; 201. a second through hole; 202. a handrail; 203. a rack body; 204. a cam member; 2041. a cam body; 2042. a connecting plate; 2043. a third through hole; 2044. a limiting sleeve; 2045. a cam surface; 205. a tension spring plate; 3. an elastic element; 4. a roll pin; 401. a pin body; 402. an abutting portion; 5. a tension spring; 6. a first handle; 7. a cushion bracket; 701. a mounting seat; 8. a backrest support; 9. a first hinge shaft; 10. a rear wheel support; 11. a second hinge shaft; 12. a third hinge shaft; 13. a rear wheel; 14. a locking shaft; 15. a hook; 16. a second handle; 17. a first link; 18. a locking plate; 19. a limiting column; 20. a second link; 21. and a limiting cover.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 7, an embodiment of the present invention provides a side-shifting mechanism, which is a structure on a wheelchair, the wheelchair includes a wheelchair body and side-shifting mechanisms disposed on two sides of the wheelchair body, the side-shifting mechanism includes a support frame 1, a handrail frame 2, an elastic element 3 and a rolling pin 4, wherein the support frame 1 is provided with a first through hole 101, the first end of the handrail frame 2 is provided with a second through hole 201, the second end of the handrail frame 2 is connected to a handrail 202, the end surface of the first end of the handrail frame 2 is further provided with an arc-shaped cam surface 2045, the circumferential center of the cam surface 2045 is concentric with the second through hole 201, the cam surface 2045 is an inclined surface, the elastic element 3 is disposed between the support frame 1 and the handrail frame 2, the elastic element 3 always has a tendency to drive the handrail frame 2 to move towards a side away from the support frame 1, the rolling pin 4 includes a pin body, the other end passes through the first through hole 101 and the second through hole 201 in sequence, and an abutting part 402 abutting against the cam surface 2045 is arranged on the pin body 401; when the rolling pin 4 rotates to the highest point of the abutting part 402 and the cam surface 2045, the position of the armrest frame 2 and the position of the support frame 1 are relatively fixed, and the armrest frame 2 is in a folding state; when the rolling pin 4 rotates until the abutting portion 402 abuts against the lowest point of the cam surface 2045, the elastic element 3 pushes the armrest frame 2 to move relative to the support frame 1, and the armrest frame 2 can rotate downward to an open state. Through setting up roll pin 4 and cam surface 2045, can realize on a mechanism with handrail frame 2 axial displacement and rotation for support frame 1, simplified the rotation of handrail frame 2 and the structure of locking, and then simplified the structure of whole side shift mechanism, and handrail frame 2 is down pivoted when the open mode, consequently can not occupy the space above the side shift mechanism, can not occupy the upper space of wheelchair promptly.

In this embodiment, support frame 1 is the front wheel support of wheelchair, the lower extreme of support frame 1 sets up the front wheel, the upper end articulates there is handrail frame 2, from the outside angle of wheelchair, handrail frame 2 is located the top of support frame 1 when the state is closed to receipts, handrail 202 is in the horizontality, handrail frame 2 is when closing the position, handrail frame 2 clockwise turning to the rear of support frame 1, and be located the below of whole wheelchair, make the space of wheelchair side unimpeded, the user can from the side wheelchair from top to bottom, do not need the user to walk around the wheelchair to the dead ahead of wheelchair, convenient to use person uses the wheelchair.

In one embodiment, a tension spring 5 is further disposed between the support frame 1 and the armrest frame 2, and the tension spring 5 always has a movement tendency of pulling the armrest frame 2 to rotate relative to the support frame 1 so as to be located in a folded state. The resetting of the handrail frame 2 can be realized by arranging the tension spring 5.

In this embodiment, articulated on the handrail frame 2 have a tension spring board 205, and tension spring board 205 is the arc, and the trompil has been seted up to the one end that tension spring board 205 kept away from handrail frame 2, and the one end and the support frame 1 of extension spring 5 are connected, and the other end is connected with the trompil on the tension spring board 205. By providing the tension spring plate 205, the tension spring 5 can be prevented from interfering with the rotation between the armrest frame 2 and the support frame 1.

In one embodiment, the cam surface 2045 is disposed on the armrest frame 2, and the cam surface 2045 is located on a side of the armrest frame 2 away from the support frame 1, and correspondingly, the abutting portion 402 is located at an end of the pin body 401. This design may reduce the difficulty of mounting the roll pin 4.

In this embodiment, the position-limiting plate is a first handle 6 connected to the end of the pin body 401, the first handle 6 can drive the pin body 401 to rotate along its axis, and the position of the first handle 6 is inside the wheelchair, which is convenient for the user to operate. By providing the first handle 6, the rotation of the pin body 401 can be driven conveniently, and the operation difficulty is reduced. Of course, the position of the first handle 6 is not limited to be provided at the end of the pin body 401 away from the abutting portion 402, but may be provided at the end adjacent to the abutting portion 402, that is, the first handle 6 is provided outside the wheelchair, specifically, the first handle 6 and the limit plate are provided at both ends of the pin body 401, respectively, while the abutting portion 402 is provided at the non-end position of the pin body 401, and the abutting portion 402 is provided adjacent to the first handle 6.

In other embodiments, the cam surface 2045 is provided on the armrest frame 2, and the cam surface 2045 is provided on the side of the armrest frame 2 close to the support frame 1.

In one embodiment, the armrest frame 2 comprises a frame body 203 and a cam member 204 detachably disposed at one end of the frame body 203, the cam surface 2045 and the second through hole 201 are disposed on the cam member 204, and the armrest 202 is mounted at one end of the frame body 203 far away from the cam member 204. By detachably connecting the cam member 204 to the frame body 203, the difficulty of manufacture can be reduced, and the mounting of the armrest frame 2 and the support frame 1 is facilitated.

In this embodiment, the cam component 204 includes a cam body 2041 and two connecting plates 2042 fixedly connected to the cam body 2041, the two connecting plates 2042 are disposed at an interval along the thickness direction of the cam body 2041, a third through hole 2043 is formed in the connecting plate 2042, a fourth through hole is formed in the rack body 203 corresponding to the third through hole 2043, and the two connecting plates 2042 are respectively disposed on two opposite sides of the rack body 203 and connected to the rack body 203 through screws.

In an embodiment, a fixing column 102 is convexly arranged on one side of the support frame 1 close to the armrest frame 2, a first through hole 101 is formed in the fixing column 102 in a penetrating mode, the fixing column 102 is provided with a first end and a second end which are arranged oppositely, the first end of the fixing column 102 is connected with the support frame 1, a first limiting plane 103 is arranged on the periphery of the second end of the fixing column 102, a second limiting plane is arranged in the second through hole 201 corresponding to the first limiting plane 103, the second end of the fixing column 102 is in plug-in fit with the second through hole 201, and the first limiting plane 103 is abutted against the second limiting plane to limit the armrest frame 2 to rotate relative to the support frame. Through setting up fixed column 102 to set up spacing plane respectively in fixed column 102 and second through-hole 201, can be convenient for realize the position locking of the receipts attitude of handrail frame 2, prevent to reduce the locking degree of difficulty of handrail frame 2 when the receipts attitude.

In this embodiment, the elastic element 3 is a spring, the spring is sleeved on the fixing column 102, and two ends of the spring are respectively abutted against the supporting frame 1 and the armrest frame 2. The elastic element 3 is of a spring structure and can be sleeved on the fixed column 102, the position of the elastic element 3 is limited by the fixed column 102, and the elastic action of the elastic element 3 on the armrest frame 2 is guaranteed not to deviate.

A limiting sleeve 2044 is convexly arranged on one side, close to the support frame 1, of the cam body 2041 of the cam member 204, the second through hole 201 is communicated with the limiting sleeve 2044, the fixed column 102 is slidably arranged in the limiting sleeve 2044, a limiting ring 104 is annularly arranged on the support frame 1 and positioned on the outer periphery of the fixed column 102, the spring is arranged in the limiting ring 104, and the inner diameter of the limiting ring 104 is larger than the outer diameter of the limiting sleeve 2044. By arranging the limiting sleeve 2044 and the fixing column 102, not only the cam member 204 can be prevented from moving on the axis perpendicular to the pin body 401 of the rolling pin 4, but also the first limiting plane 103 and the second limiting plane can be conveniently arranged.

In addition, the abutting portion 402 may be a cylinder perpendicular to the pin body 401, and the cylinder may reduce friction with the surface of the cam surface 2045, so as to ensure that the abutting portion 402 can smoothly roll on the cam surface 2045.

Of course, in order to further reduce the friction between the abutting portion 402 and the cam surface 2045 and ensure smooth rolling of the abutting portion 402, a rotatable sleeve may be sleeved on the surface of the abutting portion 402 to achieve rolling friction fit.

The side-shift mechanism of the embodiment of the present invention can be selectively located in the folding state and the opening state, with reference to fig. 4 and 5, the observer stands outside the wheelchair facing the wheelchair, the side-shift mechanism is located in the folding state (as shown in fig. 4), when the first handle 6 is pulled counterclockwise, the roll pin 4 rotates counterclockwise, the abutting portion 402 moves from the highest position to the lowest position of the cam surface 2045, the elastic element 3 pushes the armrest frame 2 to move along the axis of the pin body 401 toward the side away from the support frame 1, the first limit plane 103 on the fixed column 102 is separated from the second limit plane in the second through hole 201, at this time, the armrest frame 2 can rotate clockwise, the armrest frame 2 is driven to overcome the pulling force of the tension spring 5 and rotate clockwise to the rear of the support frame 1, so that the armrest frame 2 can rotate to the lower side of the wheelchair, so that the armrest frame 2 is located in the opening state, at the moment, the user can get on or off the wheelchair from the side edge of the wheelchair.

Specifically, the support frame 1 has a first support frame end and a second support frame end opposite to the first support frame end, the cam member 204 is disposed at the first support frame end, the armrest frame 2 is disposed at the second support frame end, when the side-shifting mechanism is changed from the folded state to the open state, the second support frame end is rotated to a position below a horizontal plane where the axis of the pin body 401 of the rolling pin 4 is located, at this time, the tension of the tension spring 5 is smaller than the gravity of the support frame 1 and the armrest frame 2, the tension spring 5 cannot pull the support frame 1 and the armrest frame 2 back to the folded state, and the support frame 1 continues to rotate towards the open state until the side-shifting mechanism is completely located in the.

As shown in fig. 1 to 3 and 8 to 13, the utility model discloses a wheelchair is still disclosed, and it includes the wheelchair body, and the both sides of wheelchair body all are provided with the mechanism of moving to one side as above arbitrary embodiment, and the concrete structure of the mechanism of moving to one side is no longer repeated.

In this embodiment, the wheelchair body includes cushion support 7 and back support 8, back support 8 articulates in the rear end of cushion support 7 through first articulated shaft 9, be provided with the first stop gear of the two relative pivoted of restriction between back support 8 and the cushion support 7, it has rear wheel support 10 to articulate through second articulated shaft 11 on the cushion support 7, rear wheel support 10 keeps away from the one end of cushion support 7 and sets up rear wheel 13, the support frame 1 of side-moving mechanism (being the front wheel support of wheelchair) articulates in the front end of cushion support 7 through third articulated shaft 12, the one end that cushion support 7 was kept away from to support frame 1 sets up the front wheel, be provided with the two relative pivoted second stop gear of restriction between cushion support 7 and the rear wheel support 10. The structure enables the wheelchair to be integrally folded and operated conveniently, and reduces the folding difficulty.

In an embodiment, the first limiting mechanism includes a locking shaft 14, at least one end of the locking shaft 14 is fixedly provided with a hook 15, and the first hinge shaft 9 or the backrest support 8 is fixedly provided with a first bayonet engaged with the hook 15. The hook 15 and the first bayonet are matched to reduce the difficulty of locking or unlocking the backrest support 8 by the first limiting mechanism.

In this embodiment, the lock shaft 14 is fixedly provided with a second handle 16. By providing the second handle 16, the difficulty of driving the locking shaft 14 to rotate can be reduced, which is convenient for the user to operate.

In this embodiment, referring to fig. 14 and 15, two installation bases 701 are arranged at the upper side of the rear end of the seat cushion support 7 at intervals, a shaft hole is formed in each installation base 701, hooks 15 are arranged at both ends of each locking shaft 14, each first hinge shaft 9 is fixed on the backrest support 8, each first hinge shaft 9 is inserted into the shaft hole, a limit cover 21 is detachably arranged at one end, away from the backrest support 8, of each first hinge shaft 9, and each limit cover 21 can prevent each first hinge shaft 9 from being separated from the shaft hole in the installation base 701.

In one embodiment, the second limiting mechanism includes a first link 17, one end of the first link 17 is hinged to the backrest support 8, the other end of the first link 17 is provided with a locking plate 18, the locking plate 18 is provided with a second bayonet, the rear wheel support 10 is provided with a limiting column 19, the limiting column 19 is in plug-in fit with the second bayonet to fix the position between the rear wheel support 10 and the cushion support 7, and the limiting column 19 is spaced from the second hinged shaft 11. The effect of first link 17 is the position of locking rear wheel support 10, prevents that rear wheel support 10 from rotating for cushion support 7, and behind the second bayonet socket on first link 17 break away from spacing post 19, rear wheel support 10 no longer receives the restriction, and it can rotate for cushion support 7 around the axis of second articulated shaft 11, and this locking structure is simple, can reduce manufacturing cost.

The rear wheel support 10 is connected with the support frame 1 through a second connecting rod 20, two ends of the second connecting rod 20 are respectively hinged with the rear wheel support 10 and the support frame 1, and the position where the second connecting rod 20 is hinged with the rear wheel support 10 is located between the limiting column 19 and the rear wheel 13. By providing the second link 20, when the seat cushion bracket 7 is driven to rotate relative to the support frame 1, the rear wheel bracket 10 can be pulled to rotate towards the front of the wheelchair by the limiting action of the second link 20, so as to realize folding.

The utility model discloses a folding process of wheelchair as follows:

describing from the wheelchair outside angle, pulling second handle 16, making locking shaft 14 rotate along the anticlockwise, pothook 15 breaks away from the first bayonet socket on the first articulated shaft 9, back support 8 can rotate to the laminating in the top of cushion support 7 counterclockwise, and first connecting rod 17 then stimulates the second bayonet socket and breaks away from spacing post 19, then pulls the rear end of cushion support 7 and rotates along anticlockwise upwards, and second connecting rod 20 pulls rear wheel support 10 in step and rotates to the lower surface of cushion support 7 around the axis of second articulated shaft 11, realizes that the whole car is folding.

In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are used in an orientation or positional relationship based on what is shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims

1. A side shifting mechanism, comprising:

the supporting frame is provided with a first through hole;

2. The side shift mechanism according to claim 1, characterized in that a tension spring is further disposed between the support frame and the armrest frame, the tension spring always has a movement tendency of pulling the armrest frame to rotate relative to the support frame so as to be in a folded state, and when the armrest frame is in the folded state, the armrest frame rotates above the support frame.

3. The side shift mechanism according to claim 1, wherein the cam surface is provided on a side of the armrest frame adjacent to the support frame; or the cam surface is arranged on one side of the armrest frame, which is deviated from the support frame.

4. The side shift mechanism of claim 3, wherein the limiting plate is a first handle attached to an end of the pin body, the first handle being capable of driving the pin body to rotate along its axis; or the like, or, alternatively,

5. The side shift mechanism according to claim 1, wherein the arm rest frame includes a frame body and a cam member detachably provided at one end of the frame body, the cam surface and the second through hole are provided on the cam member, and the arm rest is mounted at an end of the frame body away from the cam member.

6. The side shift mechanism according to claim 5, wherein the cam member includes a cam body and two connecting plates fixedly connected to the cam body, the two connecting plates are spaced apart in a thickness direction of the cam body, a third through hole is formed in the connecting plate, a fourth through hole is formed in the frame body corresponding to the third through hole, and the two connecting plates are respectively disposed on opposite sides of the frame body and connected to the frame body through screws.

7. The side shift mechanism according to claim 1, wherein a fixing column is convexly disposed on a side of the support frame close to the armrest frame, the fixing column is provided with a first through hole in a penetrating manner, an outer periphery of an end of the fixing column away from the support frame is provided with a first limiting plane, a second limiting plane is disposed in the second through hole corresponding to the first limiting plane, an end of the fixing column away from the support frame is in plug fit with the second through hole, and the first limiting plane abuts against the second limiting plane to limit the armrest frame from rotating relative to the support frame.

8. The side shift mechanism according to claim 7, wherein the elastic element is a spring, the spring is sleeved on the fixed column, and two ends of the spring are respectively abutted against the support frame and the armrest frame.

9. A wheelchair comprising a wheelchair body, wherein both sides of the wheelchair body are provided with a side shift mechanism as claimed in any one of claims 1 to 8.

10. The utility model provides a wheelchair, a serial communication port, including the wheelchair body, the wheelchair body includes cushion support, back support, rear wheel support and front wheel support, the back support through first articulated shaft articulate in the rear end of cushion support, the back support with be provided with the first stop gear of the two relative pivoted of restriction between the cushion support, the rear wheel support through the second articulated shaft with the below rear end of cushion support is articulated, the front wheel support through the third articulated shaft articulate in the below front end of cushion support, the cushion support with be provided with the second stop gear of the two relative pivoted of restriction between the rear wheel support.

11. The wheelchair of claim 10, wherein the first limiting mechanism comprises a locking shaft, at least one end of the locking shaft is fixedly provided with a hook, and the first hinge shaft or the backrest bracket is fixedly provided with a first bayonet which is in snap fit with the hook.

12. The wheelchair of claim 11 wherein a second handle is fixedly disposed on the locking shaft.

13. The wheelchair as claimed in claim 11, wherein the second limiting mechanism comprises a first connecting rod, one end of the first connecting rod is hinged to the backrest support, the other end of the first connecting rod is provided with a locking plate, the locking plate is provided with a second bayonet, the rear wheel support is provided with a limiting column, the limiting column is in plug fit with the second bayonet so as to fix the position between the rear wheel support and the cushion support, and the limiting column is spaced from the second hinged shaft.

14. The wheelchair of claim 13 wherein the rear wheel support is connected to the front wheel support by a second link, both ends of the second link being hinged to the rear wheel support and the front wheel support, respectively.

15. The wheelchair of claim 14, wherein one end of the rear wheel bracket is connected to the seat cushion bracket, the other end of the rear wheel bracket is provided with a rear wheel, and the position where the second connecting rod is hinged to the rear wheel bracket is located between the limit post and the rear wheel.