Multi-scene multi-degree-of-freedom adjustable wheelchair

Abstract

The utility model belongs to the technical field of wheelchairs, and particularly relates to a multi-scene multi-degree-of-freedom adjustable wheelchair. The multi-scene multi-degree-of-freedom adjustable wheelchair comprises a seat body, wherein the seat body comprises a seat part and a backrest part; a connecting plate is arranged below the seat part, a connecting seat is arranged below the connecting plate, and a pair of front wheels and a pair of rear wheels are arranged at four corners of the connecting seat; one end of the connecting plate is fixedly connected with a fixed shaft, and the two ends of the fixed shaft are fixedly connected with the inner wall of the connecting base. The cross beam is parallel to the fixed shaft; two ends of the cross beam are rotationally connected with the fixed shaft; the crawler belt is detachably and fixedly connected with the cross beam through the composite frame, and when the cross beam rotates, the crawler belt is driven to form an inclination angle of 0-120 degrees; and the motor provides rotating power for the crawler belt through the transmission device. According to the wheelchair, when the wheelchair climbs a slope, climbing can be assisted by adjusting the angle of the crawler belt, and the experience comfort of a user is improved by adjusting the wheelchair seat.

Description

Technical Field

[0001] The utility model belongs to the technical field of wheelchairs, and in particular relates to a multi-scene multi-freedom adjustable wheelchair. Background Art

[0002] At present, traditional wheelchairs in China mainly adopt an integrated structure. Since the structures of each component are relatively fixed, the functions of the wheelchair are relatively single. There are still major functional defects in adjusting the user's posture, the user getting on and off the wheelchair in multiple scenarios, and the use of the wheelchair in multiple scenarios. In particular, many buildings now do not have elevators and some places do not have wheelchair access. The existing climbing wheelchairs cannot adjust the wheelchair seat angle well when climbing a slope. Generally, they can only adjust a certain angle and cannot adapt to various situations well. The injured person does not have a very good experience. When climbing a slope, they need to adapt to a certain angle by themselves in order to climb smoothly. Utility Model Content

[0003] In view of this, the utility model proposes a multi-scenario multi-degree-of-freedom adjustable wheelchair, so that when the wheelchair is climbing a slope, the wheelchair seat can be adjusted to improve the user's experience comfort.

[0004] In order to achieve the above purpose, the utility model mainly provides the following technical solutions:

[0005] A multi-scenario multi-degree-of-freedom adjustable wheelchair, characterized by comprising:

[0006] A seat body, the seat body comprising a seat portion and a backrest portion;

[0007] A connecting plate is provided below the seat portion, a connecting seat is provided below the connecting plate, and a pair of front wheels and a pair of rear wheels are provided at the four corners of the connecting seat;

[0008] A fixed shaft, wherein one end of the connecting plate is fixedly connected with the fixed shaft, and both ends of the fixed shaft are fixedly connected with the inner wall of the connecting seat;

[0009] A crossbeam, wherein the crossbeam is arranged parallel to the fixed axis, and both ends of the crossbeam are rotatably connected to the fixed axis;

[0010] A crawler, wherein the crawler is detachably fixedly connected to the crossbeam via a composite frame, and when the crossbeam rotates, the crawler is driven to have an inclination angle between 0 and 120 degrees;

[0011] A motor provides rotational power to the crawler belt via a transmission device.

[0012] In the above-mentioned multi-scenario multi-degree-of-freedom adjustable wheelchair, three groups of array holes are opened on the fixed axis with the axis as the center, namely the first group of array holes, the second group of array holes and the third group of array holes, and the number and position of the holes in the array holes are kept consistent;

[0013] In the above-mentioned multi-scenario multi-degree-of-freedom adjustable wheelchair, a row of through holes is opened on the crossbeam, and the number of the through holes matches the number and positions of one group of the array holes. When the crossbeam rotates around the fixed axis, the through holes arranged in a row can be respectively arranged corresponding to the three groups of array holes, and the card strips are inserted into the correspondingly arranged through holes and the array holes to achieve setting the track to a set angle.

[0014] In the above-mentioned multi-scenario multi-degree-of-freedom adjustable wheelchair, when the through hole is opposite to the first group of array holes, the inclination angle of the track is 0°;

[0015] In the above-mentioned multi-scenario multi-degree-of-freedom adjustable wheelchair, when the through hole is opposite to the second group of array holes, the inclination angle of the track is 60°;

[0016] In the above-mentioned multi-scenario multi-degree-of-freedom adjustable wheelchair, when the through hole is opposite to the third group of array holes, the inclination angle of the track is 120°.

[0017] In the above-mentioned multi-scenario multi-degree-of-freedom adjustable wheelchair, the composite frame includes an embedded section, a connecting section and a fixed section, the embedded section is connected to the fixed section via the connecting section, the embedded section is detachably fixedly connected to the crossbeam, and the fixed section is fixedly connected to the track.

[0018] In the above-mentioned multi-scenario multi-degree-of-freedom adjustable wheelchair, the transmission device includes a first transmission shaft, a first gear connected to the first transmission shaft, a second transmission shaft, a second gear and a third gear connected to the second transmission shaft, a third transmission shaft, and a fourth gear connected to the third transmission shaft, the first transmission shaft is perpendicular to the second transmission shaft, the second transmission shaft is perpendicular to the third transmission shaft, and the first transmission shaft, the second transmission shaft and the third transmission shaft are on different planes;

[0019] Among them: the motor drives the first transmission shaft to rotate, and the first gear on the first transmission shaft also rotates, the first gear drives the second gear to rotate, and when the second gear rotates, the second transmission shaft and the third gear arranged on the second transmission shaft also rotate, and when the third gear rotates, it drives the fourth gear to rotate, and the fourth gear drives the third transmission shaft to rotate, and the third transmission shaft drives the track to rotate.

[0020] In the above-mentioned multi-scenario multi-degree-of-freedom adjustable wheelchair, rotatable armrests are also provided on both sides of the seat portion, and the rotatable armrests include a first support arm and a second support arm that are fixedly connected, the first support arm is connected to the seat portion via a rotating shaft, and the second support arm is detachably connected to the backrest portion via a clamping assembly.

[0021] In the above-mentioned multi-scenario multi-degree-of-freedom adjustable wheelchair, the snap-on assembly includes a snap-on portion and a snap-on fitting portion. After the snap-on portion and the snap-on fitting portion are snap-fitted, the rotatable armrest is fixedly arranged on the seat portion. After the snap-on portion and the snap-on fitting portion are separated, the rotatable armrest can rotate around the rotation axis.

[0022] In the above-mentioned multi-scenario multi-degree-of-freedom adjustable wheelchair, the first end of the seat portion is rotatably connected to the other end of the connecting plate via a rotating connecting member, and a tilting assembly is provided under the seat portion, and the tilting assembly is used to adjust the angle of the seat body;

[0023] In the above-mentioned multi-scenario multi-degree-of-freedom adjustable wheelchair, the tilt assembly includes a telescopic rod and a support rod, the first end of the telescopic rod is rotatably connected to the first end of the support rod, the support rod is rotatably connected to the second end of the seat portion, the second end of the telescopic rod is rotatably connected to the rear end of the connecting seat, and the second end of the support rod is rotatably connected to the front end of the connecting seat;

[0024] In the above-mentioned multi-scenario multi-degree-of-freedom adjustable wheelchair, when the telescopic rod is extended or retracted, the first end of the seat portion is driven to rotate around the rotating connecting piece, thereby adjusting the inclination angle of the seat body.

[0025] In the above-mentioned multi-scenario multi-degree-of-freedom adjustable wheelchair, the seat portion and the backrest portion are fixedly connected or connected via a cylindrical hinge.

[0026] In the above-mentioned multi-scenario multi-degree-of-freedom adjustable wheelchair, a slide rail is provided below the second end of the seat portion, and the first end of the support rod is rotatably connected to the slide rail;

[0027] In the above-mentioned multi-scenario multi-degree-of-freedom adjustable wheelchair, a slide groove is provided on the seat portion, the slide rail slides on the slide groove, a row of fixing holes is provided on the slide groove, a fixing piece is provided on the slide rail, and the fixing piece and the fixing hole are matched to fix the position of the slide rail.

[0028] By means of the above technical solution, the multi-scenario multi-degree-of-freedom adjustable wheelchair of the utility model has at least the following advantages:

[0029] The utility model can assist the wheelchair in climbing a slope by adjusting the angle of the crawler track, and improve the user's experience comfort by adjusting the wheelchair seat.

[0030] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of a multi-scenario, multi-degree-of-freedom adjustable wheelchair provided in an embodiment of the utility model;

[0032] Figure 2 Another structural schematic diagram of a multi-scenario multi-degree-of-freedom adjustable wheelchair provided in an embodiment of the utility model;

[0033] Figure 3 Another structural schematic diagram of a multi-scenario multi-degree-of-freedom adjustable wheelchair provided in an embodiment of the utility model;

[0034] Figure 4 A cross-sectional view of a fixed axis provided in an embodiment of the utility model;

[0035] Figure 5 A schematic diagram of the structure of the fixed axis and composite frame assembly provided in an embodiment of the utility model;

[0036] Figure 6 A schematic diagram of the structure of the connection plate and the connection frame assembly provided in the embodiment of the utility model;

[0037] Figure 7 A schematic diagram of the structure of a transmission device provided in an embodiment of the utility model;

[0038] Figure 8 A schematic diagram of a wheelchair structure with a telescopic rod in an extended state provided by an embodiment of the utility model;

[0039] Fig. 9 A schematic diagram of the assembly state of the crossbeam and the composite frame provided in an embodiment of the utility model;

[0040] Fig.10 A schematic diagram of the structure of the assembled crossbeam and composite frame provided in an embodiment of the utility model;

[0041] Fig.11 A schematic diagram of the structure of the rotatable armrest provided in the embodiment of the utility model in the punching state;

[0042] Fig.12 A schematic diagram of a structure for connecting a seat portion and a backrest portion by a hinge provided in an embodiment of the utility model;

[0043] Fig.13This is a schematic structural diagram of the slide rails and slide grooves on the seat body provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0044] In order to further explain the technical means and effects adopted by the utility model to achieve the predetermined utility model purpose, the specific implementation methods, structures, features and effects proposed according to the utility model are described in detail below in conjunction with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures, or characteristics in one or more embodiments may be combined in any suitable form.

[0045] like Figure 1-13 The multi-scenario multi-degree-of-freedom adjustable wheelchair shown includes a seat body 1, a connecting plate 2, a fixed axis 3, a crossbeam 4, a crawler 5 and a motor. The seat body 1 includes a seat portion 11 and a backrest portion 12. A connecting plate 2 is provided below the seat portion 11. A connecting seat 20 is provided below the connecting plate 2. A pair of front wheels 21 and a pair of rear wheels 22 are provided at the four corners of the connecting seat 20. A fixed axis 3 is fixedly connected to one end of the connecting plate 2. Both ends of the fixed axis 3 are fixedly connected to the inner wall of the connecting seat 20. The crossbeam 4 is arranged parallel to the fixed axis 3. Both ends of the crossbeam 4 are rotatably connected to the connecting seat 20. The crawler 5 is detachably fixedly connected to the crossbeam 4 via a composite frame 6. When the crossbeam 4 rotates, the crawler 5 is driven to be inclined at an angle between 0 and 120°. The motor provides rotational power to the crawler 5 via a transmission device. The motor and the transmission device are not shown in the drawings provided in this embodiment. In specific implementation, they can be placed directly below the seat portion 11.

[0046] In this embodiment, the specific angle adjustment method of the track 5 is achieved by fixing the position of the crossbeam 4. Specifically, three groups of array holes are opened on the fixed shaft 3 with the axis as the center, namely the first group of array holes 301, the second group of array holes 302 and the third group of array holes 303, and the number and position of the holes in the three groups of array holes are consistent; a row of through holes 40 is opened on the crossbeam 4, and the number of the through holes 40 matches the number and position of the array holes in one group. When the crossbeam 4 rotates around the fixed shaft 3, the through holes 40 arranged in a row can be respectively arranged corresponding to the three groups of array holes; when the through holes 40 and any group of the array holes are opposite to each other, the card strip is inserted into the oppositely arranged through holes 40 and the array holes to fix the position of the crossbeam 4 with the position of the fixed shaft 3, thereby setting the track 5 to a set angle.

[0047] When the through hole 40 is opposite to the first group of array holes 301 (such as Figure 1As shown), the inclination angle of the track 5 is 0°. In this state, the track 5 is placed under the seat portion 11. The function of the track 5 is to assist the multi-scenario multi-degree-of-freedom adjustable wheelchair to move forward and provide forward power to the multi-scenario multi-degree-of-freedom adjustable wheelchair.

[0048] When the through hole 40 is opposite to the second group of array holes 302 (such as Figure 2 As shown in the figure, the inclination angle of the track 5 is 60°. When the multi-scenario multi-degree-of-freedom adjustable wheelchair is climbing a slope or stairs, the track 5 can be adjusted to this state, so that the track 5 can be placed on the inclined surface of the slope or stairs, so that the track 5 can provide corresponding power to provide power to the multi-scenario multi-degree-of-freedom adjustable wheelchair.

[0049] When the through hole 40 is opposite to the third group of array holes 303 (such as Figure 3 As shown), the inclination angle of the track 5 is 120°. At this time, the track 5 is completely behind the seat portion 11.

[0050] Furthermore, in order to facilitate the removal of the track 5 of the multi-scene multi-degree-of-freedom adjustable wheelchair, the composite frame 6 includes an embedded section 61, a connecting section 62 and a fixed section 63. The embedded section 61 is connected to the fixed section 63 via the connecting section 62. The embedded section 61 is detachably fixedly connected to the crossbeam 4, and the fixed section 63 is detachably fixedly connected or welded to the track 5.

[0051] The embedding section 61 includes a sheet-like structure portion 611 and two strip-like fixing portions 612 (such as Fig. 9 As shown in the figure, the length of the strip-shaped fixing portion 612 is greater than that of the sheet-like structural portion 611, and a first groove 41 matching the shape of the embedded section 61 and two second grooves 42 matching the shape of the strip-shaped fixing portion 612 are provided on the crossbeam 4, the two second grooves 42 are arranged opposite to each other, and the directions of the two second grooves 42 are perpendicular to the direction of the first groove 41, the thickness of the first groove 41 is greater than the sum of the thicknesses of the sheet-like structural portion 611 and the strip-shaped fixing portion 612, the embedded section 61 is inserted from the open end of the first groove 41 until the top end of the sheet-like structural portion 611 is fitted with the bottom end of the first groove 41, and the two strip-shaped fixing portions 612 are embedded from the opening parts of the second grooves 42, thereby fixing the composite frame 6 to the crossbeam 4.

[0052] The first groove 41 is located in the middle area of ​​the cross beam 4 , and the second groove 42 is located at both sides of the first groove 41 . The first groove 41 is communicated with the second groove 42 in the inner area of ​​the cross beam 4 .

[0053] In a specific implementation, in order to fix the strip-shaped fixing portion 612 to the crossbeam 4, through holes 420 are provided at both ends of the strip-shaped fixing portion 612 and both ends of the second groove 42, so that the strip-shaped fixing portion 612 can be fixed in the second groove 42 by bolts or other fixing parts.

[0054] Furthermore, in order to facilitate the transmission of the multi-scenario multi-degree-of-freedom adjustable wheelchair, the transmission device includes a first transmission shaft 101, a first gear 111 connected to the first transmission shaft 101, a second transmission shaft 102, a second gear 112 and a third gear 113 connected to the second transmission shaft 102, a third transmission shaft 103, and a fourth gear 114 connected to the third transmission shaft 103, the first transmission shaft 101 is perpendicular to the second transmission shaft 102, the second transmission shaft 102 is perpendicular to the third transmission shaft 103, the first transmission shaft 101, the second transmission shaft 102 and the third transmission shaft 103 are connected to each other. The driving shaft 103 is on a different plane; wherein: the motor drives the first transmission shaft 101 to rotate, and the first gear 111 on the first transmission shaft 101 also rotates, and the first gear 111 drives the second gear 112 to rotate, and while the second gear 112 rotates, the second transmission shaft 102 and the third gear 113 arranged on the second transmission shaft 102 also rotate, and when the third gear 113 rotates, it drives the fourth gear 114 to rotate, and the fourth gear 114 drives the third transmission shaft 103 to rotate, and the third transmission shaft 103 drives the track 5 to rotate.

[0055] Through this transmission mode, the installation position of the motor can be more flexible (specifically in the drawings of this embodiment, the motor can be placed below the seat portion 11).

[0056] In addition, in the scenario where the track 5 is a double track 5, the double track 5 is placed at both ends of the third transmission shaft 103, that is, the motor can synchronously drive the double track 5 to roll at the same time, thereby increasing the stability of the wheelchair.

[0057] Furthermore, in order to facilitate users to get on and off the wheelchair, a rotatable armrest 7 is further provided on both sides of the seat portion 11. The rotatable armrest 7 includes a first support arm 71 and a second support arm 72 which are fixedly connected. The first support arm 71 is connected to the seat portion 11 via a rotating shaft, and the second support arm 72 is detachably connected to the backrest portion 12 via a clamping assembly 73. Specifically, the clamping assembly 73 includes a clamping portion and a clamping matching portion 730. After the clamping portion and the clamping matching portion 730 are clamped and matched, the rotatable armrest 7 is fixedly arranged on the seat portion 11. After the clamping portion and the clamping matching portion 730 are separated, the rotatable armrest 7 can rotate around the rotating shaft. In specific implementation, the second support arm 72 of the rotatable armrest 7 can be grasped by hand, and the clamping portion and the clamping matching portion 730 can be separated by applying force outwards, and then the rotatable armrest 7 can be rotated around the rotating shaft to the bottom of the wheelchair. After the rotatable armrest 7 rotates around the rotation axis to below the seat portion 11 and the seat portion 11 is adjusted to be flush with the bed, the patient can be moved horizontally onto the bed.

[0058] Specifically, the clamping portion is arranged on the second support arm 72, and the clamping fitting portion 730 is arranged on the backrest portion 12. In this embodiment, the clamping portion includes an upper clamping portion 731 and a lower clamping portion 732, and the clamping fitting portion 730 is disposed between the upper clamping portion 731 and the lower clamping portion 732. Through holes 40 are arranged on the upper clamping portion 731, the lower clamping portion 732 and the clamping fitting portion 730, and fixing studs may be arranged in the through holes 40, so as to fix the clamping portion and the clamping fitting portion 730.

[0059] Furthermore, in order to facilitate the adjustment of the seat portion 11 of the multi-scenario multi-degree-of-freedom adjustable wheelchair to adapt to the use of different scene states, the connection state of the seat portion 11 and the backrest portion 12 includes the following two modes:

[0060] Mode 1: The seat portion 11 rotates around the rotating connector 13, the backrest portion 12 is fixed on the connecting plate 2, and the backrest portion 12 is perpendicular to the connecting plate 2. In this mode, the entire seat portion 11 can move in the front-rear direction relative to the wheelchair.

[0061] Mode 2: Only the seat portion 11 and the backrest portion 12 are connected via a cylindrical hinge 120; the first end of the seat portion 11 is rotatably connected to the other end of the connecting plate 2 via a rotating connector 13, and a tilting assembly 8 is provided below the seat portion 11, and the tilting assembly 8 is used to adjust the angle of the seat portion 11. In this mode, the backrest portion 12 can be fixed by a star-shaped clip 121, and the star-shaped clip is inserted into the star-shaped recessed hole of the cylindrical hinge (such as Fig.12The backrest angle can be fixed by pressing the

[0062] The tilt assembly 8 includes a telescopic rod 81 and a support rod 82, wherein a first end of the telescopic rod 81 is rotatably connected to a first end of the support rod 82, the support rod 82 is rotatably connected to a second end of the seat portion 11, a second end of the telescopic rod 81 is rotatably connected to a rear end of the connecting seat 20, and a second end of the support rod 82 is rotatably connected to a front end of the connecting seat 20;

[0063] When the telescopic rod 81 is telescoped or extended, the second end of the seat portion 11 is driven to rotate around the rotating connector 13 , thereby adjusting the tilt angle of the seat portion 11 .

[0064] When the seat portion 11 moves, the telescopic rod 81 can be shortened to half of its original length, and the support rod 82 can rotate along the bottom cross frame. When the telescopic rod 81 becomes shorter, the support rod 82 drives the bottom of the chair body to rotate downward.

[0065] A slide rail 9 is provided below the second end of the seat portion 11, and the first end of the support rod 82 is rotatably connected to the slide rail 9; a slide groove 90 is provided on the seat portion 11, and the slide rail 9 slides on the slide groove 90, and a row of fixing holes is provided on the slide groove 90, and a fixing hole matching hole is provided on the slide rail 9, and when the fixing hole matching hole is opposite to any fixing hole, a fixing piece can be inserted into the fixing hole matching hole to fix the position of the slide rail 9.

[0066] The movement of the seat portion 11 in the front-to-back direction can achieve matching of the inclination angles of the seat portion 11 with those of a bed, vehicle seat, etc. when getting in and out of a vehicle or a bed, thereby eliminating the need for users to adjust their body position when getting in and out of a bed or a vehicle.

[0067] The above is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A multi-scenario, multi-degree-of-freedom adjustable wheelchair, characterized in that: include: A seat body, comprising a seat portion and a backrest portion; A connecting plate is provided below the seat portion, a connecting seat is provided below the connecting plate, and a pair of front wheels and a pair of rear wheels are provided at the four corners of the connecting seat; A fixed shaft is fixedly connected to one end of the connecting plate, and both ends of the fixed shaft are fixedly connected to the inner wall of the connecting seat; A crossbeam, the crossbeam being arranged parallel to the fixed axis, and both ends of the crossbeam being rotatably connected to the fixed axis; A crawler track, wherein the crawler track is detachably fixedly connected to the crossbeam via a composite frame, and when the crossbeam rotates, the crawler track is driven to an inclination angle between 0° and 120°; A motor provides rotational power to the crawler belt via a transmission device.

2. The multi-scenario, multi-degree-of-freedom adjustable wheelchair according to claim 1, characterized in that: Three groups of array holes are opened on the fixed shaft with the axis as the center, namely the first group of array holes, the second group of array holes and the third group of array holes, and the number and position of the holes in the array holes are consistent; A row of through holes is opened on the crossbeam, and the number of the through holes matches the number and position of one group of the array holes. When the crossbeam rotates around the fixed axis, the through holes arranged in a row can be respectively arranged corresponding to the three groups of array holes, and the card strips are inserted into the corresponding through holes and the array holes to set the track to a set angle.

3. The multi-scenario, multi-degree-of-freedom adjustable wheelchair according to claim 2, characterized in that: When the through hole is opposite to the first group of array holes, the inclination angle of the crawler track is 0°; When the through hole is opposite to the second group of array holes, the inclination angle of the crawler is 60°; When the through hole is opposite to the third group of array holes, the inclination angle of the track is 120°.

4. The multi-scenario, multi-degree-of-freedom adjustable wheelchair according to claim 1, characterized in that: The composite frame includes an embedded section, a connecting section and a fixed section. The embedded section is connected to the fixed section via the connecting section. The embedded section is detachably fixedly connected to the crossbeam, and the fixed section is fixedly connected to the crawler.

5. The multi-scenario, multi-degree-of-freedom adjustable wheelchair according to claim 1, characterized in that: The transmission device includes a first transmission shaft, a first gear connected to the first transmission shaft, a second transmission shaft, a second gear and a third gear connected to the second transmission shaft, a third transmission shaft, and a fourth gear connected to the third transmission shaft, the first transmission shaft is perpendicular to the second transmission shaft, the second transmission shaft is perpendicular to the third transmission shaft, and the first transmission shaft, the second transmission shaft, and the third transmission shaft are on different planes; Among them: the motor drives the first transmission shaft to rotate, and the first gear on the first transmission shaft also rotates, the first gear drives the second gear to rotate, and when the second gear rotates, the second transmission shaft and the third gear arranged on the second transmission shaft also rotate, and when the third gear rotates, it drives the fourth gear to rotate, and the fourth gear drives the third transmission shaft to rotate, and the third transmission shaft drives the crawler to rotate.

6. The multi-scenario, multi-degree-of-freedom adjustable wheelchair according to claim 1, characterized in that: Rotatable armrests are also provided on both sides of the seat portion, and the rotatable armrests include a first support arm and a second support arm that are fixedly connected. The first support arm is connected to the seat portion via a rotating shaft, and the second support arm is detachably connected to the backrest via a clamping assembly.

7. The multi-scenario, multi-degree-of-freedom adjustable wheelchair according to claim 6, characterized in that: The snap-fit ​​assembly includes a snap-fit ​​portion and a snap-fit ​​portion. After the snap-fit ​​portion and the snap-fit ​​portion are snap-fitted, the rotatable armrest is fixedly arranged on the seat portion. After the snap-fit ​​portion and the snap-fit ​​portion are separated, the rotatable armrest can rotate around the rotation axis.

8. The multi-scenario, multi-degree-of-freedom adjustable wheelchair according to claim 1, characterized in that: The first end of the seat portion is rotatably connected to the other end of the connecting plate via a rotating connector. A tilting assembly is provided below the seat portion, and the tilting assembly is used to adjust the angle of the seat body. The tilt assembly includes a telescopic rod and a support rod, wherein the first end of the telescopic rod is rotatably connected to the first end of the support rod, the support rod is rotatably connected to the second end of the seat portion, the second end of the telescopic rod is rotatably connected to the rear end of the connecting seat, and the second end of the support rod is rotatably connected to the front end of the connecting seat; When the telescopic rod is extended or retracted, the first end of the seat portion is driven to rotate around the rotating connector, thereby adjusting the tilt angle of the seat body.

9. The multi-scenario, multi-degree-of-freedom adjustable wheelchair according to claim 8, characterized in that: The seat portion and the backrest portion are fixedly connected or connected via a cylindrical hinge.

10. The multi-scenario, multi-degree-of-freedom adjustable wheelchair according to claim 8, characterized in that: A slide rail is provided below the second end of the seat portion, and the first end of the support rod is rotatably connected to the slide rail; A slide groove is provided on the seat portion, the slide rail slides on the slide groove, a row of fixing holes is provided on the slide groove, a fixing piece is provided on the slide rail, and the fixing piece fixes the position of the slide rail after being matched with the fixing holes.

Images