Wheelchair with rear wheel damping function

Abstract

The invention relates to the technical field of wheelchairs, in particular to a wheelchair with a rear wheel damping function, which comprises a frame, one end of the frame is connected with a front wheel group, the other end of the frame is connected with a rear wheel group, and a damping structure and a parking mechanism are arranged on the frame; when the wheelchair is in dynamic use, the seat cushion on the frame is in a dynamic bearing state, a supporting arm in the damping mechanism presses down a damper in a clearance mode, and the supporting arm presses down or ascends to drive an upper rocker arm and a lower rocker arm to turn over up or down on a vertical rocker arm; the inclined angle of the shock absorber relative to the horizontal plane in the rectangular framework is increased or decreased, the shock absorber of the shock absorption mechanism carries out inclined positive and negative rigidity back-and-forth switching supporting on the frame, the frame absorbs and relieves vibration transmitted by the rear wheel set through the shock absorption mechanism, and therefore impact force between the rear wheel set and the road surface is effectively absorbed, shaking of the frame is reduced, and the service life of the frame is prolonged. The stability of the frame is improved, the influence of shaking on a user sitting on the wheelchair is reduced, and the comfort of the user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wheelchairs, and in particular to a wheelchair with rear wheel shock absorption function. Background Art

[0002] A wheelchair is a chair with wheels that can help replace walking. It is an important means of transportation for the injured, sick, and disabled to recover at home, be transported around, see a doctor, and go out for activities. Wheelchairs not only meet the mobility needs of the physically disabled and those with limited mobility, but more importantly, they facilitate family members to move and take care of the patients, so that the patients can use the wheelchair for physical exercise and participate in social activities. Ordinary wheelchairs are generally composed of a foldable frame, left and right side panels, front and rear wheels, pedals, left and right armrests, a handle brake device, a seat, a backrest, and other parts.

[0003] A Chinese patent document CN102028588A discloses a manual wheelchair, including a frame, footboards, armrests, handles, backrests, seat cushions, a pair of front universal wheels and a pair of rear wheels, which are respectively arranged on the frame. The wheelchair is more labor-saving and more stable when moving, and has low cost, convenient installation and simple structure. However, the rear wheels of the wheelchair are rigidly connected to the frame. When the wheelchair is used, the impact force between the rear wheels and the road surface is transmitted to the frame, which makes the frame prone to vibration and shaking, which has an adverse effect on the user's riding.

[0004] Therefore, we provide a wheelchair with rear wheel shock absorbing function to solve the above problems. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] The problem to be solved by the present invention is to provide a wheelchair with rear wheel shock absorption function to overcome the defects in the prior art.

[0007] (II) Technical solution

[0008] In order to solve the technical problem, the present invention provides a wheelchair with rear wheel shock absorption function, comprising a frame, one end of the frame is connected to a front wheel group, the other end of the frame is connected to a rear wheel group, and a seat cushion and a backrest are arranged on the frame;

[0009] A shock absorbing mechanism, the shock absorbing mechanism comprising a support arm detachably connected to the frame, the support arm detachably connected to a cross beam, an upper rocker arm hinged to the upper middle end of the support arm, a lower rocker arm hinged to the bottom end of the support arm, a vertical rocker arm hinged to the upper rocker arm and the lower rocker arm, a shock absorber hinged to the lower middle end of the support arm and the lower rocker arm, and a shaft sleeve connecting seat detachably connected to the vertical rocker arm;

[0010] The shaft sleeve connection seat is provided with a connection hole, the rear wheel assembly is provided with a hub, the wheel axle of the hub is rotatably connected to the shaft sleeve connection seat, and the shock absorbing mechanism is located at the rear side of the main bearing force of the upper seat cushion of the frame;

[0011] When the shock absorbing mechanism is in a static state, the vertical rocker arm in the shock absorbing mechanism is located in the radial direction of the wheel axle, the vertical rocker arm, the upper rocker arm, the lower rocker arm and the support arm cooperate to form a rectangular frame, and the shock absorber is arranged obliquely compared to the horizontal plane in the rectangular frame, so that the shock absorber in the shock absorbing mechanism provides oblique zero-rigidity support to the frame;

[0012] When the seat cushion on the frame is under static load, the support arm in the shock absorbing mechanism presses down the shock absorber, and the support arm presses down and drives the upper rocker arm and the lower rocker arm to flip downward on the vertical rocker arm. The inclination angle of the shock absorber in the rectangular frame compared to the horizontal plane becomes larger, so that the shock absorber of the shock absorbing mechanism provides oblique negative stiffness support to the frame.

[0013] Furthermore, when the seat cushion on the frame is under dynamic load, the support arm gap-type downward pressure shock absorber in the shock absorbing mechanism drives the upper rocker arm and the lower rocker arm to flip upward or downward on the vertical rocker arm when the support arm is pressed downward or raised, so that the inclination angle of the shock absorber in the rectangular frame compared to the horizontal plane becomes larger or smaller, so that the shock absorber of the shock absorbing mechanism provides oblique positive and negative stiffness support to the frame.

[0014] Furthermore, the frame is detachably connected to a parking mechanism near the front end of the rear wheel assembly, and the parking mechanism includes a connecting frame, and two second matching holes are symmetrically provided at both ends of the connecting frame. The connecting frame is detachably connected to the frame through the second matching holes.

[0015] Furthermore, two mounting holes are symmetrically arranged at both ends of the connecting frame, and an adjusting rod is connected to each of the mounting holes. A locking portion cooperating with the tire of the rear wheel set is movably arranged on the adjusting rod.

[0016] Furthermore, the support arm, the upper rocker arm, the lower rocker arm, the vertical rocker arm and the shock absorber of the shock absorbing mechanism are each provided with two, and the two support arms are symmetrically installed on the cross beam.

[0017] Furthermore, the support arm is in a bent shape, the center line of the first matching hole of the support arm is close to the axial line of the vertical rocker arm, and there is an empty space between the bottom end of the support arm and the vertical rocker arm.

[0018] Furthermore, the hinged end of the shock absorber and the lower rocker arm is close to the vertical rocker arm, so that the bottom end of the shock absorber is close to the wheel axle of the hub.

[0019] Furthermore, the frame is arranged in an L shape, the end of the transverse section of the frame is detachably connected to a push frame, the backrest is installed on the push frame, the seat cushion is installed on the transverse section of the frame, and the front wheel group is installed on the vertical section of the frame.

[0020] Furthermore, a bracket is provided between the shock absorbing mechanism and the parking mechanism, the bracket is detachably connected to the transverse section of the frame, and a baffle is detachably connected to the bracket.

[0021] Furthermore, a foot pad is installed on the vertical section of the frame.

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the wheelchair with rear wheel shock absorption function provided by the present invention has the following beneficial effects:

[0024] 1. When the wheelchair of the present invention is not in use, the shock absorbing mechanism is in a static state, the vertical rocker arm in the shock absorbing mechanism is located in the radial direction of the wheel axle, the vertical rocker arm, the upper rocker arm, the lower rocker arm and the support arm cooperate to form a rectangular frame, and the shock absorber is arranged obliquely compared to the horizontal plane in the rectangular frame, so that the shock absorber in the shock absorbing mechanism provides oblique zero-rigidity support to the frame;

[0025] When the user uses the wheelchair and is in a static sitting position, the seat cushion on the frame is in a static load-bearing position, and the support arm in the shock absorbing mechanism presses down the shock absorber, which in turn drives the upper rocker arm and the lower rocker arm to flip downward on the vertical rocker arm. The inclination angle of the shock absorber in the rectangular structure becomes larger than the horizontal plane, so that the shock absorber of the shock absorbing mechanism provides oblique negative stiffness support to the frame, so that the frame sinks according to the user's weight and is supported obliquely by the shock absorbing mechanism. This provides a flexible cushioning effect when the user is statically sitting in the wheelchair. Compared with the rigid riding experience of traditional wheelchairs without shock absorption, this wheelchair significantly improves the riding comfort of the user.

[0026] 2. When the user uses the wheelchair and is in a dynamic riding state, the seat cushion on the frame is in a dynamic load-bearing state, and the support arm gap-type downward pressure shock absorber in the shock-absorbing mechanism. The downward pressure or upward pressure of the support arm drives the upper rocker arm and the lower rocker arm to flip up or down on the vertical rocker arm, so that the inclination angle of the shock absorber in the rectangular frame compared with the horizontal plane becomes larger or smaller, and the shock absorber of the shock-absorbing mechanism switches the oblique positive and negative stiffness back and forth to support the frame, so that the frame absorbs and alleviates the vibration transmitted by the rear wheel group through the shock-absorbing mechanism, thereby effectively absorbing the impact force between the rear wheel group and the road surface, reducing the shaking of the frame, improving the stability of the frame, reducing the impact of the shaking of the frame on the user riding on the wheelchair, and improving the user comfort.

[0027] 3. The present invention provides a parking mechanism, which includes a connecting frame, two second matching holes are symmetrically provided at both ends of the connecting frame, the connecting frame is detachably connected to the frame through the second matching holes, two mounting holes are symmetrically provided at both ends of the connecting frame, an adjusting rod is connected in each mounting hole, a locking portion that matches with the tire of the rear wheel group is movably provided on the adjusting rod, and the parking mechanism is arranged at the front end position of the rear wheel group, so that the user can directly operate the locking portion by hand to lock the tire of the rear wheel group, thereby preventing the user from inconveniently using the push frame for parking. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A three-dimensional diagram of a wheelchair with rear wheel shock absorption function according to the present invention;

[0030] Figure 2 It is a side view of a wheelchair with rear wheel shock absorption function according to the present invention;

[0031] Figure 3 A rear view of a wheelchair with rear wheel shock absorption function according to the present invention;

[0032] Figure 4 It is a front view of a wheelchair with rear wheel shock absorption function according to the present invention;

[0033] Figure 5 It is a schematic diagram of the structure of a rear wheel assembly of a wheelchair with rear wheel shock absorption function according to the present invention;

[0034] Figure 6 It is a schematic diagram of another viewing angle of the rear wheel assembly structure of a wheelchair with rear wheel shock absorption function according to the present invention;

[0035] Figure 7 An exploded view of a rear wheel assembly of a wheelchair with rear wheel shock absorption function according to the present invention;

[0036] Figure 8 This is a schematic diagram of the structure of a shaft sleeve connecting seat of a wheelchair with rear wheel shock absorption function according to the present invention;

[0037] Fig. 9 It is a schematic diagram of a parking mechanism of a wheelchair with rear wheel shock absorption function according to the present invention;

[0038] Fig.10 A schematic diagram of a shock absorbing mechanism of a wheelchair with rear wheel shock absorbing function according to the present invention;

[0039] Fig.11 An exploded view of a shock absorbing mechanism of a wheelchair with rear wheel shock absorbing function according to the present invention;

[0040] The names of the components corresponding to the various figure marks in the figure are: 1. frame; 2. push frame; 3. seat cushion; 4. backrest; 5. foot pad; 6. front wheel group; 7. rear wheel group; 701. hub; 702. axle; 8. shock absorbing mechanism; 801. cross beam; 802. support arm; 803. first matching hole; 804. upper rocker arm; 805. lower rocker arm; 806. shock absorber; 807. vertical rocker arm; 9. parking mechanism; 901. connecting frame; 902. second matching hole; 903. adjusting rod; 904. locking part; 10. bushing connecting seat; 1011. connecting hole; 11. bracket; 12. baffle. DETAILED DESCRIPTION

[0041] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0042] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0043] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0044] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0045] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0046] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0047] See also Figures 1 to 11 The present invention provides a wheelchair with rear wheel shock absorption function, comprising a frame 1, one end of the frame 1 is connected to a front wheel set 6, the other end of the frame 1 is connected to a rear wheel set 7, and a seat cushion 3 and a backrest 4 are arranged on the frame 1;

[0048] The shock absorbing mechanism 8 includes a support arm 802 detachably connected to the vehicle frame 1, the support arm 802 is detachably connected to the cross beam 801, an upper rocker arm 804 is hinged to the upper middle portion of the support arm 802, a lower rocker arm 805 is hinged to the bottom end of the support arm 802, a vertical rocker arm 807 is hinged to the upper rocker arm 804 and the lower rocker arm 805, a shock absorber 806 is hinged to the lower middle portion of the support arm 802 and the lower rocker arm 805, and a shaft sleeve connecting seat 10 is detachably connected to the vertical rocker arm 807;

[0049] A connecting hole 1011 is provided on the shaft sleeve connecting seat 10, a hub 701 is provided on the rear wheel assembly 7, a wheel axle 702 of the hub 701 is rotatably connected to the shaft sleeve connecting seat 10, and a shock absorbing mechanism 8 is located at the rear side of the main bearing force of the upper seat cushion 3 of the frame 1;

[0050] When the shock absorbing mechanism 8 is in a static state, the vertical rocker arm 807 in the shock absorbing mechanism 8 is located in the radial direction of the wheel axle 702, and the vertical rocker arm 807, the upper rocker arm 804, the lower rocker arm 805 and the support arm 802 cooperate to form a rectangular structure, and the shock absorber 806 is arranged obliquely compared to the horizontal plane in the rectangular structure, so that the shock absorber 806 in the shock absorbing mechanism 8 provides oblique zero-rigidity support to the frame 1;

[0051] When the seat cushion 3 on the frame 1 is under static load, the support arm 802 in the shock absorbing mechanism 8 presses down the shock absorber 806, and the support arm 802 presses down and drives the upper rocker arm 804 and the lower rocker arm 805 to flip downward on the vertical rocker arm 807. The inclination angle of the shock absorber 806 in the rectangular structure is larger than the horizontal plane, so that the shock absorber 806 of the shock absorbing mechanism 8 supports the frame 1 obliquely with negative stiffness;

[0052] When the seat cushion 3 on the frame 1 is under dynamic load, the support arm 802 in the shock absorbing mechanism 8 presses down the shock absorber 806 in a gap manner, and the support arm 802 presses down or rises to drive the upper rocker arm 804 and the lower rocker arm 805 to flip up or down on the vertical rocker arm 807, so that the inclination angle of the shock absorber 806 in the rectangular structure compared with the horizontal plane becomes larger or smaller, so that the shock absorber 806 of the shock absorbing mechanism 8 supports the frame 1 obliquely with positive and negative stiffness.

[0053] See also Figures 1 to 9 The frame 1 is detachably connected to a parking mechanism 9 near the front end of the rear wheel group 7. The parking mechanism 9 includes a connecting frame 901. Two second matching holes 902 are symmetrically provided at both ends of the connecting frame 901. The connecting frame 901 is detachably connected to the frame 1 through the second matching holes 902. Two mounting holes are symmetrically provided at both ends of the connecting frame 901. An adjusting rod 903 is connected in each mounting hole. A locking portion 904 that cooperates with the tire of the rear wheel group 7 is movably provided on the adjusting rod 903.

[0054] See also Figures 2 to 11 The shock absorbing mechanism 8 includes two support arms 802, upper rocker arms 804, lower rocker arms 805, vertical rocker arms 807 and shock absorbers 806. The two support arms 802 are symmetrically installed on the cross beam 801. The support arms 802 are bent. The center line of the first matching hole 803 of the support arm 802 is close to the axial line of the vertical rocker arm 807. There is an empty space between the bottom end of the support arm 802 and the vertical rocker arm 807. The hinged end of the shock absorber 806 and the lower rocker arm 805 is close to the vertical rocker arm 807, so that the bottom end of the shock absorber 806 is close to the wheel axle 702 of the hub 701.

[0055] See also Figures 1 to 6 The frame 1 is arranged in an L shape, the end of the transverse section of the frame 1 is detachably connected with a push frame 2, the backrest 4 is installed on the push frame 2, the seat cushion 3 is installed on the transverse section of the frame 1, the front wheel group 6 is installed on the vertical section of the frame 1, a bracket 11 is arranged between the shock absorbing mechanism 8 and the parking mechanism 9, the bracket 11 is detachably connected to the transverse section of the frame 1, a baffle 12 is detachably connected to the bracket 11, and a foot pad 5 is installed on the vertical section of the frame 1.

[0056] This embodiment provides a wheelchair with rear wheel shock absorption function:

[0057] When the wheelchair is not in use, the shock absorbing mechanism 8 is in a static state, the vertical rocker arm 807 in the shock absorbing mechanism 8 is located in the radial direction of the wheel axle 702, the vertical rocker arm 807, the upper rocker arm 804, the lower rocker arm 805 and the support arm 802 cooperate to form a rectangular structure, and the shock absorber 806 is arranged obliquely compared to the horizontal plane in the rectangular structure, so that the shock absorber 806 in the shock absorbing mechanism 8 provides oblique zero-rigidity support to the frame 1;

[0058] When the user uses the wheelchair and is in a static sitting position, the seat cushion 3 on the frame 1 is in a static load-bearing position, and the support arm 802 in the shock absorbing mechanism 8 presses down the shock absorber 806, and the support arm 802 presses down and drives the upper rocker arm 804 and the lower rocker arm 805 to flip downward on the vertical rocker arm 807, and the inclination angle of the shock absorber 806 in the rectangular frame becomes larger than the horizontal plane, so that the shock absorber 806 of the shock absorbing mechanism 8 supports the frame 1 obliquely with negative stiffness;

[0059] When the user uses the wheelchair and is in a dynamic riding state, the seat cushion 3 on the frame 1 is in a dynamic load-bearing state, and the support arm 802 in the shock absorbing mechanism 8 presses down the shock absorber 806 in a gap manner. The support arm 802 presses down or rises to drive the upper rocker arm 804 and the lower rocker arm 805 to flip up or down on the vertical rocker arm 807, so that the inclination angle of the shock absorber 806 in the rectangular structure compared with the horizontal plane becomes larger or smaller, so that the shock absorber 806 of the shock absorbing mechanism 8 switches the support of the frame 1 back and forth between the positive and negative stiffness in the oblique direction, so that the frame 1 absorbs and alleviates the vibration transmitted by the rear wheel group 7 through the shock absorbing mechanism 8, thereby effectively absorbing the impact force between the rear wheel group 7 and the road surface, reducing the shaking of the frame 1, improving the stability of the frame 1, reducing the impact of the shaking on the user riding on the wheelchair, and improving the user comfort.

[0060] The same and similar parts between the various embodiments in this specification can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0061] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A wheelchair with rear wheel shock absorption function, characterized in that: include: A frame (1), one end of the frame (1) is connected to a front wheel set (6), the other end of the frame (1) is connected to a rear wheel set (7), and a seat cushion (3) and a backrest (4) are provided on the frame (1); A shock absorbing mechanism (8), the shock absorbing mechanism (8) comprising a support arm (802) detachably connected to the vehicle frame (1), the support arm (802) being detachably connected to a crossbeam (801), an upper rocker arm (804) being hinged at the middle upper portion of the support arm (802), a lower rocker arm (805) being hinged at the bottom end of the support arm (802), a vertical rocker arm (807) being hinged at the upper and middle portions of the support arm (802) and the lower rocker arm (805), a shock absorber (806) being hinged at the middle lower portion of the support arm (802) and the lower rocker arm (805), and a shaft sleeve connecting seat (10) being detachably connected to the vertical rocker arm (807); The shaft sleeve connecting seat (10) is provided with a connecting hole (1011), the rear wheel assembly (7) is provided with a hub (701), the wheel axle (702) of the hub (701) is rotatably connected to the shaft sleeve connecting seat (10), and the shock absorbing mechanism (8) is located at the rear side of the main bearing force of the upper seat cushion of the frame (1); When the shock absorbing mechanism (8) is in a static state, the vertical rocker arm (807) in the shock absorbing mechanism (8) is located in the radial direction of the wheel axle (702), the vertical rocker arm (807), the upper rocker arm (804), the lower rocker arm (805) and the support arm (802) cooperate to form a rectangular structure, and the shock absorber (806) is arranged obliquely relative to the horizontal plane in the rectangular structure, so that the shock absorber (806) in the shock absorbing mechanism (8) provides oblique zero-rigidity support for the vehicle frame (1); When the seat cushion (3) on the frame (1) is in a static load-bearing state, the support arm (802) in the shock absorbing mechanism (8) presses down the shock absorber (806), and the support arm (802) presses down and drives the upper rocker arm (804) and the lower rocker arm (805) to flip downward on the vertical rocker arm (807), and the inclination angle of the shock absorber (806) relative to the horizontal plane in the rectangular structure becomes larger, so that the shock absorber (806) of the shock absorbing mechanism (8) provides oblique negative stiffness support to the frame (1).

2. The wheelchair with rear wheel shock absorption function as claimed in claim 1, characterized in that: When the seat cushion (3) on the frame (1) is under dynamic load, the support arm (802) in the shock absorbing mechanism (8) intermittently presses down the shock absorber (806), and the support arm (802) presses down or rises to drive the upper rocker arm (804) and the lower rocker arm (805) to flip up or down on the vertical rocker arm (807), so that the inclination angle of the shock absorber (806) in the rectangular frame relative to the horizontal plane becomes larger or smaller, so that the shock absorber (806) of the shock absorbing mechanism (8) provides oblique positive and negative stiffness support to the frame (1).

3. The wheelchair with rear wheel shock absorption function as claimed in claim 1, characterized in that: The vehicle frame (1) is detachably connected to a parking mechanism (9) near the front end of the rear wheel assembly (7); the parking mechanism (9) comprises a connecting frame (901); two second matching holes (902) are symmetrically arranged at both ends of the connecting frame (901); the connecting frame (901) is detachably connected to the vehicle frame (1) via the second matching holes (902).

4. The wheelchair with rear wheel shock absorption function as claimed in claim 3, characterized in that: Two mounting holes are symmetrically arranged at both ends of the connecting frame (901), and an adjusting rod (903) is connected to each mounting hole. A locking portion (904) that cooperates with the tire of the rear wheel group (7) is movably arranged on the adjusting rod (903).

5. The wheelchair with rear wheel shock absorption function as claimed in claim 1, characterized in that: The shock absorbing mechanism (8) is provided with two supporting arms (802), upper rocker arms (804), lower rocker arms (805), vertical rocker arms (807) and shock absorbers (806), and the two supporting arms (802) are symmetrically installed on the cross beam (801).

6. The wheelchair with rear wheel shock absorption function as claimed in claim 1, characterized in that: The support arm (802) is in a bent shape, the center line of the first matching hole (803) of the support arm (802) is close to the axial line of the vertical rocker arm (807), and there is an empty space between the bottom end of the support arm (802) and the vertical rocker arm (807).

7. The wheelchair with rear wheel shock absorption function as claimed in claim 1, characterized in that: The hinged end of the shock absorber (806) and the lower rocker arm (805) is close to the vertical rocker arm (807), so that the bottom end of the shock absorber (806) is close to the wheel axle (702) of the hub (701).

8. The wheelchair with rear wheel shock absorption function as claimed in claim 1, characterized in that: The frame (1) is arranged in an L shape, the end of the transverse section of the frame (1) is detachably connected to a push frame (2), the backrest (4) is mounted on the push frame (2), the seat cushion (3) is mounted on the transverse section of the frame (1), and the front wheel set (6) is mounted on the vertical section of the frame (1).

9. The wheelchair with rear wheel shock absorption function as claimed in claim 8, characterized in that: A bracket (11) is provided between the shock absorbing mechanism (8) and the parking mechanism (9); the bracket (11) is detachably connected to the transverse section of the vehicle frame (1); and a baffle (12) is detachably connected to the bracket (11).

10. The wheelchair with rear wheel shock absorption function as claimed in claim 8, characterized in that: A foot pad (5) is installed on the vertical section of the frame (1).

Images