Wheelchair capable of being folded and stored according to width of seat

Abstract

The invention relates to the technical field of medical instruments, and discloses a wheelchair for width and folding storage of a seat, which comprises a main bracket as a basic component of the whole device and used for bearing and assembling an adjusting mechanism and a lower structural member to which the adjusting mechanism belongs; the seat supporting pipe is fixedly connected to one side of the outer wall of the main supporting frame, and a cushion is arranged in the seat supporting pipe and plays a role in supporting the body of a user; the adjusting mechanism is arranged on one side of the outer wall of the seat supporting pipe and used for adjusting the width of the cushion; the seat supporting crutch is fixedly connected to one end of the outer wall of the seat supporting pipe and is used for folding the backrest; the folding mechanism is fixedly connected to the interior of the seat supporting crutch and used for folding and storing the wheelchair; the auxiliary assembly is fixedly connected to the interior of the main supporting frame. Through cooperative rotation and adjustment of all parts of the folding mechanism, the occupied volume of the folded wheelchair is remarkably reduced, and the wheelchair is convenient to store in an environment with limited space and is also convenient to transport and carry.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, in particular to a wheelchair with a narrow or wide seat and that can be folded and stored. Background Art

[0002] With the development of society and the advancement of science and technology, wheelchairs are an important means of transportation for people with limited mobility, and their demand and application are becoming increasingly widespread. However, existing wheelchairs still have some shortcomings in design and function.

[0003] In daily life, the body sizes and needs of different users vary greatly, but the width of the seat and the length of the backrest of traditional wheelchairs are often fixed, which cannot adapt well to individual differences, causing users to feel uncomfortable when riding, affecting the user experience and comfort. In addition, the storage and carrying of wheelchairs is also a common problem. In environments with limited space, such as homes and vehicles, traditional wheelchairs are large in size and difficult to fold, taking up too much space, causing inconvenience to users and caregivers. Especially when it is necessary to carry a wheelchair when traveling, a wheelchair that is difficult to store may increase the difficulty and cost of transportation.

[0004] In order to solve these problems, some wheelchairs with adjustment functions have appeared on the market, but the adjustment methods of these wheelchairs are often complicated, inconvenient to operate, and the adjustment range is limited, which cannot fully meet the needs of users. At the same time, in terms of folding function, the existing wheelchairs are either not easy to fold or the volume after folding is still large, which cannot really achieve convenient storage and carrying.

[0005] Therefore, developing a wheelchair that can conveniently adjust the width of the seat and the length of the backrest, can be easily folded and stored, and occupies a small space has important practical significance and market demand. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a wheelchair with a seat width that can be folded and stored, which solves the problem that the adjustment method of the wheelchair is complicated and the volume after folding is still large.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: A wheelchair for seat width and narrowness and folding and storage, comprising:

[0008] The main support frame, as the basic component of the whole device, is used to carry and assemble the adjustment mechanism and its subordinate lower structural parts;

[0009] The seat support tube is fixedly connected to one side of the outer wall of the main support frame, and a seat cushion is arranged inside the seat support tube to provide support for the user's body;

[0010] An adjustment mechanism, which is arranged on one side of the outer wall of the seat support tube and is used to adjust the width of the seat cushion;

[0011] A seat support crook, which is fixedly connected to one end of the outer wall of the seat support tube and is used to fold the backrest;

[0012] A folding mechanism, which is fixedly connected to the inside of the seat support crook and is used to fold and store the wheelchair;

[0013] An auxiliary component, which is fixedly connected to the inside of the main support frame to enhance the bottom strength of the main support frame;

[0014] The telescopic support assembly is arranged at one end of the outer wall of the main support frame to provide support for the user's legs.

[0015] Preferably, the adjustment mechanism includes a reel sleeve, which is fixedly connected to the inside of the seat support tube, a seat shaft core is arranged inside the reel sleeve, a gear sleeve is fixedly connected to one side of the outer wall of the seat support crook, a gear is meshingly connected to the inside of the gear sleeve, one end of the outer wall of the seat shaft core passes through the gear sleeve and the gear in sequence, a sleeve outer sleeve is arranged on the outer wall of the gear, and the gear is connected to the sleeve outer sleeve through a spring.

[0016] Preferably, the folding mechanism includes a fixed connection, which is fixedly connected to one side of the outer wall of the seat support crook. The fixed connection is symmetrically arranged, and the internal rotation of the fixed connection on one side is connected to an outer cross bar, and the internal rotation of the fixed connection on the other side is connected to an inner cross bar. The outer walls of the outer cross bar and the inner cross bar are equidistantly provided with a plurality of assembly holes, and the internal thread of the assembly hole is connected to a plum blossom knob.

[0017] Preferably, the auxiliary component includes a corner connector, which is evenly distributed inside the main support frame, and the interior of the corner connector is rotatably connected with an upper connecting tube and a lower connecting tube, respectively, the upper connecting tube and the lower connecting tube constitute a cross arm, and the adjacent ends of the two cross arms are rotatably connected, and the outer wall of the cross arm is provided with a connecting hole, and the internal thread of the connecting hole is connected with a plum blossom knob three.

[0018] Preferably, the telescopic support assembly includes a folding plate, which is fixedly connected to one side of the outer wall of the main support frame, the folding plate is rotatably connected to one end of a small wheel support tube inside, the other end of the small wheel support tube is rotatably connected to the front wheel, one side of the outer wall of the small wheel support tube is fixedly connected to a curved attachment, the inside of the curved attachment is slidably connected to a pedal telescopic tube, one end of the outer wall of the pedal telescopic tube is rotatably connected to a pedal, the outer wall of the curved attachment is fixedly connected to a C-shaped pin, and one side of the outer wall of the small wheel support tube is fixedly connected to a long curved tube.

[0019] Preferably, the seat support crook is internally rotatably connected to a backrest support tube, the outer walls of the backrest support tube and the seat support crook are both provided with assembly holes 2, the internal thread of the assembly hole 2 is connected to a plum blossom knob 2, and the outer wall of the backrest is wrapped with sponge.

[0020] Preferably, a pipe cover is fixedly connected to one side of the outer wall of the main support frame, and a handrail weldment is provided inside the pipe cover.

[0021] Preferably, the two adjustment mechanisms are respectively arranged inside the seat support tube and the backrest support tube, and the two seat shaft cores are respectively connected to the seat cushion and the backrest.

[0022] Preferably, the outer walls of the outer cross bar and the inner cross bar are both provided with scales.

[0023] Preferably, a nylon gasket is provided inside the corner connector, an anti-rollover rod is rotatably connected to one side of the outer wall of the corner connector, and plastic gaskets are provided inside the anti-rollover rod and the corner connector.

[0024] Working principle: By rotating the seat shaft core, the change in its direction can realize the reeling and unwinding of the seat cushion and backrest inside the reel sleeve respectively. In this way, the length of the seat cushion and the backrest changes, and the width of the seat also changes accordingly, so that it can better adapt to the needs of different users and various usage scenarios. In addition, the change in the common length of the outer crossbar and the inner crossbar means that the width of the wheelchair has changed. The adjustable mechanism can further adjust the width of the seat cushion and the backrest, making the user feel more comfortable. When the wheelchair is folded, once the plum blossom knob is unscrewed, the outer crossbar and the inner crossbar can be rotated inside the fixed connection until the outer crossbar, the inner crossbar and the main support frame are in a parallel state. At this time, the front and rear parts of the main support frame are no longer supported, so the main support frame can be squeezed inward. At the same time, unscrewing the plum blossom knob that cooperates with the folding plate can make the small wheel support tube rotate in the direction of the main support frame, and the footrest can also be rotated to the inside of the wheelchair, which further reduces the occupied volume of the wheelchair after folding.

[0025] The present invention provides a wheelchair with a narrow or wide seat and foldable storage. It has the following beneficial effects:

[0026] 1. The present invention significantly reduces the occupied volume of the wheelchair after folding through the coordinated rotation and adjustment of various components of the folding mechanism, which is convenient for storage in an environment with limited space and is also conducive to transportation and carrying. The adjustable design and convenient folding function enable the wheelchair to adapt to more different usage scenarios and environments, thereby improving its versatility and flexibility.

[0027] 2. The present invention can flexibly adjust the width of the seat and the length of the seat cushion and backrest according to the body shape and needs of different users through the adjustment mechanism, providing each user with a customized comfort experience and meeting the diverse needs of users. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a three-dimensional diagram of the wheelchair of the present invention;

[0029] Figure 2 for Figure 1 A in the enlarged view;

[0030] Figure 3 is a schematic diagram of a wheelchair in the present invention;

[0031] Figure 4 for Figure 3 The enlarged view of point B in the figure;

[0032] Figure 5 This is a display diagram of the wheelchair in the present invention;

[0033] Figure 6 It is an exploded view of the adjustment mechanism in the present invention;

[0034] Figure 7 for Figure 6 The enlarged view of point C in the figure;

[0035] Figure 8 It is a schematic diagram of the folding mechanism in the present invention.

[0036] Among them, 1. Main support frame; 2. Seat support tube; 3. Cushion; 4. Backrest; 5. Seat support turn; 6. Reel sleeve; 7. Seat shaft core; 8. Gear sleeve; 9. Gear; 10. Sleeve sleeve; 11. Spring; 12. Fixed connecting piece; 13. Outer cross bar; 14. Inner cross bar; 15. Assembly hole 1; 16. Plum blossom knob 1; 17. Corner connector; 18. Upper connecting tube; 19. Lower connecting tube; 20. Connecting hole ; 21. Plum blossom knob three; 22. Folding plate; 23. Small wheel support tube; 24. Front wheel; 25. Bend attachment; 26. Foot pedal telescopic tube; 27. Foot pedal; 28. C-pin; 29. ​​Backrest support tube; 30. Assembly hole two; 31. Plum blossom knob two; 32. Sponge; 33. Pipe cover; 34. Handrail weldment; 35. Scale; 36. Nylon gasket; 37. Anti-roll bar; 38. Plastic gasket; 39. Long curved tube. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Example:

[0039] Please refer to the attached Figure 1 -Attached Figure 8 The embodiment of the present invention provides a wheelchair for seat width and folding and storage, comprising:

[0040] The main support frame 1, as the basic component of the whole device, is used to carry and assemble the adjustment mechanism and its subordinate structural parts;

[0041] The seat support tube 2 is fixedly connected to one side of the outer wall of the main support frame 1, and a seat cushion 3 is arranged inside the seat support tube to provide support for the user's body;

[0042] An adjustment mechanism, which is arranged on one side of the outer wall of the seat support tube 2 and is used to adjust the width of the seat cushion 3;

[0043] A seat support crook 5, which is fixedly connected to one end of the outer wall of the seat support tube 2 and is used to fold the backrest 4;

[0044] A folding mechanism, which is fixedly connected to the inside of the seat support crook 5 and is used to fold and store the wheelchair;

[0045] An auxiliary component, which is fixedly connected to the inside of the main support frame 1 to enhance the bottom strength of the main support frame 1;

[0046] The telescopic support assembly is arranged at one end of the outer wall of the main support frame 1 to provide support for the user's legs.

[0047] A pipe cover 33 is fixedly connected to one side of the outer wall of the main support frame 1, and a handrail weldment 34 is arranged inside the pipe cover 33;

[0048] The adjustment mechanism includes a reel sleeve 6, which is fixedly connected to the inside of the seat support tube 2, and a seat shaft core 7 is arranged inside the reel sleeve 6, a gear sleeve 8 is fixedly connected to one side of the outer wall of the seat support turn 5, and a gear 9 is meshedly connected inside the gear sleeve 8, and one end of the outer wall of the seat shaft core 7 passes through the gear sleeve 8 and the gear 9 in sequence, and a sleeve outer sleeve 10 is arranged on the outer wall of the gear 9, and the gear 9 is connected to the sleeve outer sleeve 10 through a spring 11;

[0049] The seat support crook 5 is internally rotatably connected with a backrest support tube 29, and the outer walls of the backrest support tube 29 and the seat support crook 5 are both provided with a second assembly hole 30, and the inner thread of the second assembly hole 30 is connected with a second plum blossom knob 31, and the outer wall of the backrest 4 is wrapped with a sponge 32;

[0050] The two adjustment mechanisms are respectively arranged inside the seat support tube 2 and the backrest support tube 29, and the two seat shaft cores 7 are respectively connected to the seat cushion 3 and the backrest 4;

[0051] Specifically, rotating the outer sleeve 10 can drive the seat shaft core 7 to rotate. The change in the direction of the seat shaft core 7 can respectively complete the winding and unwinding of the seat cushion 3 and the backrest 4 inside the reel sleeve 6, thereby changing the length of the seat cushion 3 and the backrest 4, and the width of the seat changes accordingly, so as to better adapt to the needs and usage scenarios of different users. In the process of rotation of the seat shaft core 7, the gear 9 is driven to mesh and rotate in the gear sleeve 8, thereby preventing the seat shaft core 7 from rotating when the user is on the top of the seat cushion 3.

[0052] The folding mechanism includes a fixed link 12, which is fixedly connected to one side of the outer wall of the seat support crook 5. The fixed link 12 is symmetrically arranged, and the inner part of the fixed link 12 on one side is rotatably connected to an outer cross bar 13, and the inner part of the fixed link 12 on the other side is rotatably connected to an inner cross bar 14. The outer walls of the outer cross bar 13 and the inner cross bar 14 are equidistantly provided with a plurality of assembly holes 15, and the inner parts of the assembly holes 15 are threadedly connected to a plum blossom knob 16.

[0053] Specifically, the folding mechanism is respectively arranged at the front and rear parts of the main support frame 1, and the plum blossom knob 16 is screwed into different assembly holes 15 of the outer cross bar 13 and the inner cross bar 14 to change the total length formed by the outer cross bar 13 and the inner cross bar 14, and the outer cross bar 13 and the inner cross bar 14 are connected to the main support frames 1 on both sides. The change of the total length of the outer cross bar 13 and the inner cross bar 14 means the change of the width of the wheelchair, and the adjustable mechanism can further adjust the width of the seat cushion 3 and the backrest 4 to make the user more comfortable;

[0054] In addition, when the plum blossom knob 16 is rotated out, the outer cross bar 13 and the inner cross bar 14 can be rotated inside the fixed connection 12 until the outer cross bar 13, the inner cross bar 14 and the main support frame 1 are parallel. At this time, the front and rear parts of the main support frame 1 are unsupported, and the main support frame 1 can be squeezed inward to complete the folding of the wheelchair.

[0055] The auxiliary component includes a corner connector 17, which is evenly distributed inside the main support frame 1. The interior of the corner connector 17 is rotatably connected with an upper connecting tube 18 and a lower connecting tube 19, respectively. The upper connecting tube 18 and the lower connecting tube 19 constitute a cross arm. The adjacent ends of the two cross arms are rotatably connected. The outer wall of the cross arm is provided with a connecting hole 20, and the interior of the connecting hole 20 is threadedly connected with a plum blossom knob 21;

[0056] The outer walls of the outer crossbar 13 and the inner crossbar 14 are provided with scales 35;

[0057] A nylon gasket 36 is disposed inside the corner connector 17, an anti-rollover rod 37 is rotatably connected to one side of the outer wall of the corner connector 17, and a plastic gasket 38 is disposed between the anti-rollover rod 37 and the inside of the corner connector 17;

[0058] Specifically, the upper connecting tube 18 and the lower connecting tube 19 form a cross arm to provide support for the rear bottom of the wheelchair, making the bottom of the wheelchair more stable. During the folding and restoration process of the wheelchair, the spacing of the main support frame 1 changes, and the multiple angles inside the cross arm change accordingly. When the wheelchair has completed the adjustment of the width, the plum blossom knob 21 can be used to screw into the connecting hole 20. By fixing the internal angle of the cross arm, the spacing of the main support frame 1 remains unchanged, making the wheelchair more stable as a whole. The outer cross bar 13, the inner cross bar 14 and the scale 35 of the cross arm correspond to each other. By observing the scale 35, the angle of the cross arm is maintained in the optimal state to avoid the generation of internal torque that shortens the service life of the cross arm. The nylon gasket 36 can reduce the friction coefficient between the corner connector 17 and the upper connecting tube 18 and the lower connecting tube 19, so that the cross arm is smoother during movement and assembly. The plastic gasket 38 enhances the connection stability between the anti-rollover rod 37 and the corner connector 17.

[0059] The telescopic support assembly includes a folding plate 22, which is fixedly connected to one side of the outer wall of the main support frame 1, one end of a small wheel support tube 23 is rotatably connected inside the folding plate 22, and the other end of the small wheel support tube 23 is rotatably connected to a front wheel 24, one side of the outer wall of the small wheel support tube 23 is fixedly connected to a curved attachment 25, the inner part of the curved attachment 25 is slidably connected to a pedal telescopic tube 26, one end of the outer wall of the pedal telescopic tube 26 is rotatably connected to a pedal 27, the outer wall of the curved attachment 25 is fixedly connected to a C-shaped pin 28, and one side of the outer wall of the small wheel support tube 23 is fixedly connected to a long curved tube 39;

[0060] Specifically, the outside of the folding plate 22 can be connected with the plum blossom knob to change the angle between the folding plate 22 and the small wheel support tube 23. When the wheelchair is folded, unscrewing the plum blossom knob can rotate the small wheel support tube 23 toward the main support frame 1, further reducing the occupied volume of the wheelchair after folding. The height of the footrest 27 can be changed by the cooperation of the C-pin 28 and the curved attachment 25, and the angle between the footrest 27 and the footrest telescopic tube 26 can be changed. With the joint change and cooperation of the two, the orientation of the footrest 27 can be made to better fit the user's foot.

[0061] In summary, the present invention provides a wheelchair for adjusting the width of a seat and folding and storing the seat. By rotating the seat shaft core 7, the direction of the seat shaft core 7 can respectively complete the winding and unwinding of the seat cushion 3 and the backrest 4 inside the winding shaft sleeve 6, thereby changing the length of the seat cushion 3 and the backrest 4, and the width of the seat changes accordingly, so as to better adapt to the needs and usage scenarios of different users. In addition, the change in the total length of the outer cross bar 13 and the inner cross bar 14 means that the width of the wheelchair changes, and the adjustable mechanism can further adjust the width of the seat cushion 3 and the backrest 4. To make the user more comfortable, when the wheelchair is folded, when the plum blossom knob 16 is rotated out, the outer cross bar 13 and the inner cross bar 14 can be rotated inside the fixed connection 12 until the outer cross bar 13, the inner cross bar 14 and the main support frame 1 are parallel. At this time, the front and rear parts of the main support frame 1 are unsupported, and the main support frame 1 can be squeezed inward. At the same time, rotating the plum blossom knob that cooperates with the folding plate 22 can make the small wheel support tube 23 rotate toward the main support frame 1, and the foot pedal 27 can be rotated to the inside of the wheelchair, further reducing the occupied volume of the wheelchair after folding.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wheelchair for folding and storing with a narrow or wide seat, characterized in that: include: The main support frame (1) is a basic component of the whole device and is used to carry and assemble the adjustment mechanism and its subordinate structural parts; A seat support tube (2) is fixedly connected to one side of the outer wall of the main support frame (1), and a seat cushion (3) is arranged inside the seat support tube to provide support for the user's body; An adjustment mechanism, which is arranged on one side of the outer wall of the seat support tube (2) and is used to adjust the width of the seat cushion (3); A seat support crook (5) fixedly connected to one end of the outer wall of the seat support tube (2) and used for folding the backrest (4); A folding mechanism, which is fixedly connected to the inside of the seat support crook (5) and is used for folding and storing the wheelchair; An auxiliary component, which is fixedly connected to the inside of the main support frame (1) to enhance the bottom strength of the main support frame (1); The telescopic support assembly is arranged at one end of the outer wall of the main support frame (1) to provide support for the user's legs.

2. A wheelchair for folding and storing with adjustable seat width according to claim 1, characterized in that: The adjustment mechanism comprises a reel sleeve (6), the reel sleeve (6) is fixedly connected to the inside of the seat support tube (2), a seat shaft core (7) is arranged inside the reel sleeve (6), a gear sleeve (8) is fixedly connected to one side of the outer wall of the seat support crook (5), a gear (9) is meshingly connected inside the gear sleeve (8), one end of the outer wall of the seat shaft core (7) passes through the gear sleeve (8) and the gear (9) in sequence, a sleeve outer sleeve (10) is arranged on the outer wall of the gear (9), and the gear (9) is connected to the sleeve outer sleeve (10) via a spring (11).

3. A wheelchair for folding and storing with adjustable seat width according to claim 1, characterized in that: The folding mechanism comprises a fixed connecting member (12), wherein the fixed connecting member (12) is fixedly connected to one side of the outer wall of the seat support crook (5), and the fixed connecting member (12) is symmetrically arranged, wherein the interior of the fixed connecting member (12) on one side is rotatably connected to an outer cross bar (13), and the interior of the fixed connecting member (12) on the other side is rotatably connected to an inner cross bar (14), and the outer walls of the outer cross bar (13) and the inner cross bar (14) are both equidistantly provided with a plurality of assembly holes (15), and the interiors of the assembly holes (15) are threadedly connected to a plum blossom knob (16).

4. A wheelchair for folding and storing with adjustable seat width according to claim 1, characterized in that: The auxiliary component comprises a corner connector (17), wherein the corner connector (17) is evenly distributed inside the main support frame (1), wherein an upper connecting tube (18) and a lower connecting tube (19) are rotatably connected inside the corner connector (17), wherein the upper connecting tube (18) and the lower connecting tube (19) constitute a cross arm, wherein adjacent ends of two cross arms are rotatably connected, wherein a connecting hole (20) is provided on an outer wall of the cross arm, and a plum blossom knob (21) is threadedly connected inside the connecting hole (20).

5. A wheelchair for folding and storing with adjustable seat width according to claim 1, characterized in that: The telescopic support assembly comprises a folding plate (22), the folding plate (22) is fixedly connected to one side of the outer wall of the main support frame (1), one end of a small wheel support tube (23) is rotatably connected inside the folding plate (22), the other end of the small wheel support tube (23) is rotatably connected to a front wheel (24), one side of the outer wall of the small wheel support tube (23) is fixedly connected to a curved attachment (25), the inside of the curved attachment (25) is slidably connected to a pedal telescopic tube (26), one end of the outer wall of the pedal telescopic tube (26) is rotatably connected to a pedal (27), the outer wall of the curved attachment (25) is fixedly connected to a C-shaped pin (28), and one side of the outer wall of the small wheel support tube (23) is fixedly connected to a long curved tube (39).

6. A wheelchair for folding and storing with adjustable seat width according to claim 1, characterized in that: The seat support crook (5) is internally rotatably connected to a backrest support tube (29), the outer walls of the backrest support tube (29) and the seat support crook (5) are both provided with a second assembly hole (30), the inner thread of the second assembly hole (30) is connected to a second plum blossom knob (31), and the outer wall of the backrest (4) is wrapped with a sponge (32).

7. A wheelchair for folding and storing with adjustable seat width according to claim 1, characterized in that: A pipe cover (33) is fixedly connected to one side of the outer wall of the main support frame (1), and a handrail weldment (34) is arranged inside the pipe cover (33).

8. A wheelchair for folding and storing with adjustable seat width according to claim 2, characterized in that: The two adjustment mechanisms are respectively arranged inside the seat support tube (2) and the backrest support tube (29), and the two seat shaft cores (7) are respectively connected to the seat cushion (3) and the backrest (4).

9. A wheelchair for folding and storing with adjustable seat width according to claim 3, characterized in that: The outer walls of the outer cross bar (13) and the inner cross bar (14) are both provided with scales (35).

10. A wheelchair for folding and storing with adjustable seat width according to claim 4, characterized in that: A nylon gasket (36) is arranged inside the corner connector (17), an anti-rollover rod (37) is rotatably connected to one side of the outer wall of the corner connector (17), and a plastic gasket (38) is arranged inside the anti-rollover rod (37) and the corner connector (17).

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