Plastic back plate structure of wheelchair

Abstract

The utility model discloses a plastic back plate structure of a wheelchair, which comprises a backrest, and a cushion plate is arranged on the front side of the backrest and is of a soft structure; connecting assemblies are arranged on the two sides of the backrest and at least used for fixed connection between the backrest and the wheelchair frame. A lifting module is arranged above the back surface of the backrest, a height-adjustable headrest is mounted above the lifting module, and the lifting module is at least used for adjusting the height of the headrest; a supporting body is arranged on the lower portion of the back face of the backrest and at least used for reinforcing and supporting the backrest backwards. The backrest can be installed on wheelchairs of different specifications, the adaptability is better, meanwhile, the supporting capacity of the backrest is higher, the supporting effect on the back of a passenger is better, comfort is improved, and the neck of the passenger can be well supported through the headrest.

Description

Technical Field

[0001] This utility model relates to the field of wheelchair technology, specifically to a plastic back panel structure for a wheelchair. Background Technology

[0002] Many people today have mobility issues due to illness or accidents and need alternative means of transportation. Wheelchairs are simple in structure and easy to use. Many models of wheelchairs have been developed, among which folding wheelchairs are small in size, easy to store, and lightweight, making them very popular.

[0003] However, existing wheelchair backrests are generally fixed structures, some made of engineered wood and others of soft fabric, resulting in significant discomfort for passengers. Therefore, there is an urgent need to design a new plastic backrest structure for wheelchairs to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide a plastic back panel structure for wheelchairs to address the aforementioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A plastic backrest structure for a wheelchair includes a backrest, the front of which is provided with a pad, the pad being a soft structure.

[0007] Both sides of the backrest are provided with connecting components, which are used at least for the fixed connection between the backrest and the wheelchair frame.

[0008] A lifting module is provided above the back of the backrest, and a height-adjustable headrest is installed above the lifting module. The lifting module is used at least for adjusting the height of the headrest.

[0009] A support body is provided on the lower part of the backrest, and the support body is used at least for reinforcing the backrest backward.

[0010] Preferably, the backrest has a curved section in the middle and symmetrically distributed straight sections on both sides of the curved section.

[0011] The curved section and the straight sections on both sides are manufactured as a single piece.

[0012] Preferably, the connecting assembly includes a sliding frame;

[0013] Two vertically distributed insert plates are fixedly installed on one side of the outer wall of the sliding frame;

[0014] The sliding frame is equipped with a bushing, which consists of two separate pieces.

[0015] The back of the sliding frame is provided with several retaining rings, and the bushing is located between the retaining rings and the sliding frame.

[0016] Preferably, the outer walls on both sides of the backrest are provided with insertion holes, and the insertion plate is slidably inserted into the insertion holes;

[0017] The backrest has a locking bolt that extends through the insertion hole.

[0018] Preferably, the lifting module includes a restraint sleeve fixedly installed on the back of the backrest, and a lifting plate is slidably inserted into the top of the restraint sleeve.

[0019] A pre-tightening handwheel is inserted into one side of the restraint sleeve and abuts against the outer wall of the lifting plate. An elbow is fixedly installed at the top of the lifting plate. A rotating shaft is provided at the top of the elbow, and a locking handle is provided at the end of the rotating shaft.

[0020] The headrest is rotatably mounted on a rotating shaft.

[0021] Preferably, the headrest has grooves on both sides of its back, and the locking handle is located inside the grooves.

[0022] Preferably, the support body comprises a plurality of horizontal plates and a plurality of vertical plates connected in an alternating manner, wherein both the horizontal plates and the vertical plates are fixed to the back of the backrest;

[0023] The outer surfaces of the horizontal and vertical plates are covered with sealing plates.

[0024] In the above technical solution, the plastic back panel structure for a wheelchair provided by this utility model has the following beneficial effects:

[0025] The backrest can be installed on wheelchairs of different sizes, making it more adaptable. At the same time, the backrest has stronger support and provides better support for the rider's back, improving comfort. The headrest also provides good support for the rider's neck. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0027] Figure 1 This is a schematic diagram of an angle structure of a plastic back panel for a wheelchair according to the present invention.

[0028] Figure 2 This is another structural schematic diagram of an embodiment of the plastic back panel structure of a wheelchair according to the present invention.

[0029] Figure 3 This is a partial exploded view of an embodiment of the plastic back panel structure for a wheelchair according to the present invention.

[0030] Figure 4 This is a side view structural diagram of an embodiment of a plastic back panel structure for a wheelchair according to the present invention.

[0031] 1. Backrest; 11. Straight section; 12. Curved section; 13. Insertion hole; 2. Pad; 3. Connecting assembly; 31. Sliding frame; 32. Insert plate; 33. Bushing; 34. Snap ring; 35. Locking bolt; 4. Lifting module; 41. Restraint sleeve; 42. Pre-tightening handwheel; 43. Lifting plate; 44. Elbow; 45. Rotating shaft; 46. Locking handle; 5. Headrest; 51. Through groove; 6. Support body; 61. Horizontal plate; 62. Vertical plate; 63. Sealing plate. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0033] like Figure 1-4 As shown in the figure, the embodiment of this utility model provides a plastic backrest structure for a wheelchair, including a backrest 1, a pad 2 on the front of the backrest 1, the pad 2 being a soft structure; connecting components 3 on both sides of the backrest 1, the connecting components 3 being used at least for the fixed connection between the backrest 1 and the wheelchair frame; a lifting module 4 on the upper back of the backrest 1, a height-adjustable headrest 5 installed above the lifting module 4, the lifting module 4 being used at least for the height adjustment of the headrest 5; and a support body 6 on the lower back of the backrest 1, the support body 6 being used at least for the rearward reinforcement support of the backrest 1.

[0034] In this embodiment, a backrest 1 is included, and a pad 2 is provided on the front of the backrest 1. The pad 2 is a soft structure. The backrest 1 is made of plastic material, which reduces the manufacturing cost and improves the comfort of the backrest.

[0035] Specifically, the backrest 1 has a curved section 12 in the middle, which fits the back of the passenger better and is less tiring to lean against for a long time. The curved section 12 has symmetrically distributed straight sections 11 on both sides, which improves the connection strength between the backrest 1 and the wheelchair.

[0036] The curved part 12 and the straight parts 11 on both sides are manufactured as a single piece.

[0037] In this embodiment, connecting components 3 are provided on both sides of the backrest 1. The connecting components 3 are used for at least the fixed connection between the backrest 1 and the wheelchair frame.

[0038] Specifically, the connecting component 3 includes a sliding frame 31, which is a vertical rod structure with a semi-circular shape when viewed from above. The rods of the wheelchair are inserted into the slots on the back of the sliding frame 31.

[0039] Two vertically distributed insert plates 32 are fixedly installed on one outer wall of the sliding frame 31;

[0040] The sliding frame 31 has a bushing 33 inside. The bushing 33 is a two-piece structure. The design of the two bushings 33 makes the retaining ring 34 more tightly fixed to the sliding frame 31, which improves the connection strength between the sliding frame 31, the retaining ring 34 and the wheelchair rods.

[0041] The back of the sliding frame 31 is provided with several retaining rings 34, and the bushing 33 is located between the retaining rings 34 and the sliding frame 31. The surface of the retaining rings 34 is provided with bolts, and the retaining rings 34 are fixedly installed on the back of the sliding frame 31 by means of bolts. The number of retaining rings 34 can be four.

[0042] Specifically, the backrest 1 has insertion holes 13 on both outer walls. Insert plates 32 are slidably inserted into the insertion holes 13. By sliding the insert plates 32 inside the insertion holes 13, the installation position of the sliding frame 31 can be changed, which is suitable for the installation of wheelchair rods of different specifications and improves the adaptability of the backrest 1.

[0043] The back of the backrest 1 is provided with a locking bolt 35 that extends into the socket 13, and the plug plate 32 is locked inside the socket 13 by means of the locking bolt 35.

[0044] In this embodiment, a lifting module 4 is provided above the back of the backrest 1. The lifting module 4 is used at least for adjusting the height of the headrest 5.

[0045] Specifically, the lifting module 4 includes a restraint sleeve 41 fixedly installed on the back of the backrest 1. A lifting plate 43 is slidably inserted into the top of the restraint sleeve 41. The lifting plate 43 slides inside the restraint sleeve 41 to adjust the height of the headrest 5.

[0046] Specifically, a pre-tightening handwheel 42 is inserted into one side of the restraint sleeve 41 and abuts against the outer wall of the lifting plate 43. The pre-tightening handwheel 42 is used to fix the lifting plate 43 inside the restraint sleeve 41. An elbow 44 is fixedly installed at the top of the lifting plate 43. A rotating shaft 45 is provided at the top of the elbow 44. A locking handle 46 is provided at the end of the rotating shaft 45. The locking handle 46 can limit the rotating shaft 45, ensuring the stability of the headrest 5 after adjustment. The elbow 44 allows the headrest 5 to be installed beyond the backrest 1, so that the headrest 5 is located on the front side of the backrest, which is more conducive to the occupant's lean.

[0047] Specifically, the headrest 5 is rotatably mounted on the rotating shaft 45. Through the design of the rotating shaft 45, the headrest 5 can rotate along the bend 44 to adjust the tilt angle of the headrest 5.

[0048] Specifically, the back of the headrest 5 has grooves 51 on both sides, and the locking handle 46 is located inside the grooves 51. The locking handle 46 is located inside the grooves 51 and does not affect people's normal operation of the locking handle 46.

[0049] In this embodiment, a height-adjustable headrest 5 is installed above the lifting module 4. The headrest 5 can be made of latex material to ensure the comfort of the pillow.

[0050] In this embodiment, a support body 6 is provided on the lower part of the back of the backrest 1. The support body 6 is used at least for reinforcing the backrest 1 backward.

[0051] Specifically, the support body 6 is composed of several horizontal plates 61 and several vertical plates 62 connected in an alternating manner. The horizontal plates 61 and vertical plates 62 are all fixed to the back of the backrest 1. The curves of the horizontal plates 61 and vertical plates 62 are the same as the curves of the curved surface 12 of the backrest 1, supporting the backrest 1 from the rear side and improving the support strength of the backrest 1.

[0052] The outer surfaces of the horizontal panel 61 and the vertical panel 62 are covered with a sealing plate 63, which seals the gap between the horizontal panel 61 and the vertical panel 62, thus ensuring the aesthetics of the backrest 1.

[0053] The above description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A plastic backrest structure for a wheelchair, comprising a backrest (1), characterized in that, The backrest (1) has a pad (2) on its front side, and the pad (2) is a soft structure; Both sides of the backrest (1) are provided with connecting components (3), and the connecting components (3) are used at least for the fixed connection between the backrest (1) and the wheelchair frame; A lifting module (4) is provided above the back of the backrest (1), and a height-adjustable headrest (5) is installed above the lifting module (4). The lifting module (4) is used at least for adjusting the height of the headrest (5). A support body (6) is provided on the lower part of the backrest (1), and the support body (6) is used at least for reinforcing the backrest (1) backward.

2. The plastic back panel structure for a wheelchair according to claim 1, characterized in that, The backrest (1) has a curved section (12) in the middle, and straight sections (11) are symmetrically distributed on both sides of the curved section (12). The curved part (12) and the straight parts (11) on both sides are integrally molded.

3. The plastic back panel structure for a wheelchair according to claim 1, characterized in that, The connecting assembly (3) includes a sliding frame (31); Two vertically distributed insert plates (32) are fixedly installed on one side of the outer wall of the sliding frame (31); The sliding frame (31) is provided with a bushing (33) inside, and the bushing (33) is a two-piece separate structure; The back of the sliding frame (31) is provided with a plurality of retaining rings (34), and the bushing (33) is located between the retaining rings (34) and the sliding frame (31).

4. The plastic back panel structure for a wheelchair according to claim 3, characterized in that, The backrest (1) has insertion holes (13) on both outer walls, and the insertion plate (32) is slidably inserted into the insertion hole (13); The backrest (1) has a locking bolt (35) that extends through the insertion hole (13) to the back.

5. The plastic back panel structure for a wheelchair according to claim 1, characterized in that, The lifting module (4) includes a restraint sleeve (41) fixedly installed on the back of the backrest (1), and a lifting plate (43) is slidably inserted into the top of the restraint sleeve (41). One side of the restraint sleeve (41) is inserted with a pre-tightening handwheel (42) that abuts against the outer wall of the lifting plate (43). The top of the lifting plate (43) is fixedly installed with an elbow (44). The top of the elbow (44) is provided with a rotating shaft (45). The end of the rotating shaft (45) is provided with a locking handle (46). The headrest (5) is rotatably mounted on the rotating shaft (45).

6. The plastic back panel structure for a wheelchair according to claim 5, characterized in that, Both sides of the back of the headrest (5) are provided with grooves (51), and the locking handle (46) is located inside the grooves (51).

7. The plastic back panel structure for a wheelchair according to claim 1, characterized in that, The support (6) is composed of several horizontal plates (61) and several vertical plates (62) connected in an alternating manner, and both the horizontal plates (61) and the vertical plates (62) are fixed to the back of the backrest (1); The outer surfaces of the horizontal plate (61) and the vertical plate (62) are covered with sealing plates (63).

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