Multifunctional rear-entry wheelchair with anti-collision function

Abstract

The utility model relates to a wheelchair technical field, especially a multifunctional rear-entry wheelchair with anti-collision function, wherein the wheelchair frame bottom four corners are installed with front and rear wheels, the rear two corners are provided with driving motors, the driving motors are transmitted through a shaft coupling and the rear wheels, the driving motors and the controller are powered by a battery, and the controller controls the driving motors. The wheelchair frame is not provided with an independent rear and upper side frame, and a seat assembly is arranged inside. The rear two sides of the frame are connected through hinges to open and close a backrest, and the backrest is provided with a magnetic lock to form a complete closed loop with the frame. When moving, the closed loop structure can effectively buffer and block collisions from all directions, disperse the collision force, and ensure the safety of the user. At the same time, the backrest is opened, the user can directly enter from the rear, and the user always faces the wheelchair during the process, without the need for complex turning or adjusting actions, greatly improving the convenience of use, and providing a safer and more comfortable travel option for the disabled.

Description

Technical Field

[0001] This utility model relates to the field of wheelchair technology, and in particular to a multi-functional rear entry wheelchair with anti-collision function. Background Technology

[0002] In today's society, with the increasing number of people suffering from physical disabilities due to various accidents, wheelchairs, as an important assistive device to help people with mobility impairments achieve mobility and daily activities, are experiencing growing market demand. While traditional wheelchairs can meet basic mobility needs in terms of design and function, they have gradually revealed many limitations in use, failing to fully meet users' diverse needs in terms of safety, comfort, and functionality.

[0003] Traditional wheelchairs have an open structure and lack effective protective features, making them prone to collisions with surrounding objects during movement, especially in crowded or complex environments. Such collisions can not only damage the wheelchair itself but, more importantly, cause physical injury to the user.

[0004] Moreover, traditional wheelchairs usually require users to walk around to the front of the wheelchair and sit with their backs to it, which is inconvenient for users. Utility Model Content

[0005] To improve the safety and ease of use of wheelchairs, this utility model provides a multi-functional rear-entry wheelchair with anti-collision function.

[0006] Therefore, the present invention provides the following technical solution: A multi-functional rear-entry wheelchair with anti-collision function includes a wheelchair frame. Front and rear wheels are mounted at the four corners of the bottom of the wheelchair frame. A battery and controller are mounted on the wheelchair frame. Drive motors are mounted at the two rear corners of the bottom of the wheelchair frame. The output of each drive motor is connected to the corresponding rear wheel via a coupling. Both the drive motors and the controller are electrically connected to the battery via wires, and the control terminal of the controller is electrically connected to the drive motor. The wheelchair frame does not have separate rear and upper side frames. A seat assembly is installed inside the wheelchair frame. Openable backrests are connected to the left and right rear sides of the wheelchair frame via hinges. Two backrest motors are mounted on the wheelchair frame, and the outputs of the backrest motors are connected to the corresponding backrests. The backrests and the wheelchair frame form a complete closed loop.

[0007] Furthermore, the seat assembly includes a seat column and a wheelchair seat; the seat column is vertically fixed inside the frame of the wheelchair frame; the wheelchair seat is mounted on the top of the seat column.

[0008] Furthermore, auxiliary seats are rotatably mounted on the left and right sides of the wheelchair seat via a pivot; a fixing tube is fixedly installed at the bottom of the wheelchair seat, and an electric telescopic rod is installed inside the fixing tube; when the electric telescopic rod extends outward along the fixing tube to its maximum stroke, the auxiliary seat can be supported to a horizontal position, and the extended end of the electric telescopic rod just abuts against the bottom of the auxiliary seat, providing support for its horizontal position.

[0009] Furthermore, each of the two backrests is equipped with a magnetic lock adapter. When the two backrests are in a closed state, the corresponding components form a locking engagement through magnetic attraction.

[0010] Furthermore, auxiliary seats are installed inside the wheelchair frame and on both sides of the wheelchair seat.

[0011] Furthermore, the exerciser fixing base is detachably installed inside the wheelchair frame via bolts. An exerciser fixing bracket is installed on the exerciser fixing base. The exerciser fixing bracket includes a first bracket and a second bracket. One end of both the first bracket and the second bracket is hinged to the exerciser fixing base. A limiting body is provided on the side of the first bracket closer to the second bracket. A limiting groove is provided on the limiting body. First limiting holes are evenly provided on both sides of the limiting groove. The end of the second bracket away from the exerciser fixing base is installed by a first pin that engages with the corresponding first limiting hole. A hand exerciser is installed on the first bracket, and a foot exerciser is installed on the second bracket.

[0012] Furthermore, the first bracket is a hollow structure, with a mechanical telescopic rod slidably installed inside. The mechanical telescopic rod is evenly provided with second limiting holes. The first bracket is installed by cooperating with the corresponding second limiting holes through a second pin. The hand exerciser is installed at the top of the mechanical telescopic rod.

[0013] Furthermore, the foot exerciser includes a second crank and foot pedals, the second crank being rotatably mounted on the second support, with foot pedals installed at both ends; the hand exerciser includes a first crank and handles, the first crank being rotatably mounted on the first support, with handles installed at both ends.

[0014] Furthermore, the upper edge of the wheelchair frame extends upward with a barrier, and the barrier is provided with slots.

[0015] Furthermore, the front of the wheelchair frame has an arc-shaped structure.

[0016] Advantages and positive effects of this utility model: The wheelchair frame and backrest work together to form a complete closed-loop structure. During movement, this closed-loop structure effectively cushions and blocks collisions from the front, rear, or sides. In the event of a collision, the closed-loop structure disperses the impact force, preventing the user from being directly hit and providing reliable protection for the user's safety.

[0017] With the backrest open, users can enter the wheelchair directly from the back. During the entry process, the user remains facing the wheelchair, eliminating the need for complicated turning or adjustment movements, thus improving ease of use. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A rear perspective view of a multi-functional rear-entry wheelchair with anti-collision function provided for this utility model.

[0020] Figure 2 A front perspective view of a multi-functional rear entry wheelchair with anti-collision function provided for this utility model.

[0021] Figure 3 A top view of a multi-functional rear-entry wheelchair with anti-collision function provided by this utility model.

[0022] Figure 4 A top perspective view of an exercise device inside a multifunctional rear-entry wheelchair with anti-collision function provided by this utility model.

[0023] Figure 5 A bottom perspective view of an exercise device inside a multifunctional rear-entry wheelchair with anti-collision function provided by this utility model.

[0024] Figure 6 This utility model provides a view of the upper side structure of the seat inside a multi-functional rear-entry wheelchair with anti-collision function.

[0025] Figure 7 This utility model provides a view of the underside structure of the seat inside a multi-functional rear-entry wheelchair with anti-collision function.

[0026] In the diagram: 1. Controller; 2. Front wheel; 3. Rear wheel; 4. Wheelchair frame; 5. Exercise device mounting bracket; 6. Enclosure; 7. Foot pedals; 8. Wheelchair seat; 9. Assistive seat; 10. Seat column; 11. First crank; 12. Second limiting hole; 13. Telescopic rod; 14. Exercise device mounting base; 15. First limiting hole; 16. Second crank; 17. Handle; 18. Backrest; 19. Slot; 20. First bracket; 21. Second bracket; 22. Limiting body; 23. Battery; 24. Bolt; 25. Fixing tube; 26. Backrest motor. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0028] This utility model provides a multi-functional rear-entry wheelchair with anti-collision function, such as Figure 1 As shown, the wheelchair includes a frame 4, with front wheels 2 and rear wheels 3 installed at the four corners of the bottom of the frame 4. A battery 23 and a controller 1 are installed on the frame 4. Drive motors are installed at the two rear corners of the bottom of the frame 4. The output of each drive motor is connected to the corresponding rear wheel 3 via a coupling. Both the drive motor and the controller 1 are electrically connected to the battery 23 via wires, and the control terminal of the controller 1 is electrically connected to the drive motor. A seat assembly is installed inside the frame of the wheelchair frame 4.

[0029] like Figures 1-3 As shown, the wheelchair frame 4 does not have independent rear and upper side frames. The left and right sides of the rear of the wheelchair frame 4 are connected to hinged, openable backrests 18. Magnetic locks are installed on the opposite sides of each backrest 18. The backrests 18 and the wheelchair frame 4 form a complete closed loop. The front of the wheelchair frame 4 has an arc-shaped structure, which effectively disperses the impact force generated during a collision, improving safety. Magnetic lock adapters are installed on each of the two backrests 18. When the two backrests 18 are closed, the corresponding components form a locking engagement through magnetic attraction.

[0030] like Figures 6-7As shown, the seat assembly includes a seat column 10 and a wheelchair seat 8. The seat column 10 is vertically fixed inside the frame of the wheelchair frame 4. The wheelchair seat 8 is installed at the top of the seat column 10. Assistive seats 9 are rotatably mounted on the left and right sides of the wheelchair seat 8 via pivots. A fixing tube 25 is fixedly installed at the bottom of the wheelchair seat 8, and an electric telescopic rod is installed inside the fixing tube 25. When the electric telescopic rod extends outward along the fixing tube 25 to its maximum stroke, the assistive seat 9 can be supported to a horizontal position, and the extended end of the electric telescopic rod precisely abuts against the bottom of the assistive seat 9, providing support for its horizontal position. The assistive seat 9 expands the user's seating range and improves comfort. Furthermore, the wheelchair seat 8 is longer than the assistive seat 9, making it easier for the user to sit on the wheelchair seat 8 and lean towards the exercise device for convenient exercise.

[0031] like Figures 4-5 As shown, the exerciser fixing base 14 is detachably installed inside the wheelchair frame 4 via bolts 24. The exerciser fixing bracket 5 is installed on the exerciser fixing base 14. The exerciser fixing bracket 5 includes a first bracket 20 and a second bracket 21. One end of the first bracket 20 and the second bracket 21 are both hinged to the exerciser fixing base 14. A limiting body 22 is provided on the side of the first bracket 20 near the second bracket 21. A limiting groove is provided on the limiting body 22. First limiting holes 15 are evenly provided on both sides of the limiting groove. The end of the second bracket 21 away from the exerciser fixing base 14 is installed by a first pin in conjunction with the corresponding first limiting hole 15. The foot exerciser is installed on the second bracket 21.

[0032] The first support 20 has a hollow structure, and a mechanical telescopic rod 13 is slidably installed inside it. The mechanical telescopic rod 13 is evenly provided with second limiting holes 12. The first support 20 is installed by the second pin cooperating with the corresponding second limiting hole 12. The hand exerciser is installed at the top of the mechanical telescopic rod 13.

[0033] The foot exerciser includes a second crank 16 and foot pedals. The second crank 16 is rotatably mounted on the second support 21, and foot pedals 7 are installed at both ends of the second crank 16. The hand exerciser includes a first crank 11 and handles 17. The first crank 11 is rotatably mounted on the first support 20, and handles 17 are installed at both ends of the first crank 11.

[0034] The upper edge of the wheelchair frame 4 extends upwards to form a barrier 6, which has a slot 19. An umbrella pole, IV drip holder, or other items can be inserted into the slot 19. When the user needs rain protection, the umbrella pole can be inserted into the slot 19, and the barrier 6 and slot 19 together secure the umbrella, preventing it from tipping over. When the user needs intravenous infusion, the IV drip holder can be inserted into the slot 19, providing stable support for the IV drip without requiring additional assistance, thus improving ease of use.

[0035] Working principle: Battery 23 serves as the core energy source, supplying power to controller 1 and the two drive motors via wires, ensuring that all electrical components have the necessary power to operate. The user controls the wheelchair's direction of movement via controller 1.

[0036] The wheelchair frame 4 does not have independent rear and upper side frames, but retains the bottom support frame, forming an open rear entrance. When the user needs to sit, the backrest motor 26 automatically opens the backrests 18 on both sides, allowing the user to enter directly from the rear of the wheelchair without having to go around to the side or front, which is suitable for the getting up and sitting habits of people with mobility impairments. When entering, the auxiliary seats 9 on the left and right sides of the wheelchair seat 8 are in an upright position, so that the left and right sides of the wheelchair seat 8 and the corresponding inner wall of the wheelchair frame 4 form a passage, making it convenient for the user to enter.

[0037] After being seated, the backrest motor 26 closes the two backrests 18, which are then secured by a magnetic lock, forming a complete closed-loop frame with the wheelchair frame 4. This closed-loop frame covers the rear, sides, and front of the wheelchair, allowing it to disperse impact forces and prevent direct contact between the user and the impact source when the wheelchair is involved in a collision.

[0038] Subsequently, the electric telescopic rod at the bottom of the wheelchair seat 8 extends automatically, pushing the auxiliary seats 9 on both sides to rotate upward to a horizontal position, and providing support for the auxiliary seats 9, thereby expanding the user's seating area and improving comfort.

[0039] When the user needs to exercise, the exerciser's fixed base 14 is detachably installed in the wheelchair frame 4 using bolts. The first bracket 20 and the second bracket 21 of the exerciser's fixed support 5 are both hinged to the fixed base and can rotate around the hinge point. The tilt angle of the second bracket 21 can be fixed by the first pin of the second bracket 21 cooperating with the first limiting hole 15 of the limiting groove of the first bracket 20, adapting to different users' leg lengths and ensuring that the foot pedal 7 can be comfortably stepped on. When the user steps on the foot pedal 7 with both feet, it drives the second crank 16 to rotate around the support axis, simulating the pedaling action, realizing the extension and contraction of leg muscles and strength training, and promoting blood circulation in the lower limbs. The first support 20 has a hollow structure, and the internal mechanical telescopic rod 13 can be adjusted in length by cooperating with the second pin of the first support 20 and the second limiting hole 12 of the mechanical telescopic rod 13, adapting to different users' arm lengths and ensuring that the handle 17 can be comfortably gripped. When the user rotates the handle 17 with both hands, it drives the first crank 11 to rotate around the support axis, simulating the cranking action, realizing the activity and strength training of arm muscles.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-functional rear-entry wheelchair with anti-collision function, characterized in that, The wheelchair frame (4) includes a wheelchair frame (4), with front wheels (2) and rear wheels (3) installed at the four corners of the bottom of the wheelchair frame (4). A battery (23) and a controller (1) are installed on the wheelchair frame (4). A drive motor is installed at the two rear corners of the bottom of the wheelchair frame (4). The output end of each drive motor is connected to the corresponding rear wheel (3) via a coupling. The drive motor and the controller (1) are electrically connected to the battery (23) via wires. The control end of the controller (1) is electrically connected to the drive motor. The wheelchair frame (4) does not have an independent rear side frame and an upper side frame. A seat assembly is installed inside the frame of the wheelchair frame (4). The left and right sides of the rear of the wheelchair frame (4) are connected to openable backrests (18) via hinges. Two backrest motors (26) are installed on the wheelchair frame (4). The output ends of the backrest motors (26) are connected to the corresponding backrests (18). The backrests (18) and the wheelchair frame (4) form a complete closed loop.

2. The multi-functional rear-entry wheelchair according to claim 1, characterized in that, The seat assembly includes a seat post (10) and a wheelchair seat (8); the seat post (10) is vertically fixed inside the frame of the wheelchair frame (4); the wheelchair seat (8) is mounted on the top of the seat post (10).

3. A multi-functional rear-entry wheelchair according to claim 2, characterized in that, On the left and right sides of the wheelchair seat (8), auxiliary seats (9) are rotatably installed via a pivot. A fixing tube (25) is fixedly installed at the bottom of the wheelchair seat (8), and an electric telescopic rod is installed inside the fixing tube (25). When the electric telescopic rod extends outward along the fixing tube (25) to its maximum stroke, the auxiliary seat (9) can be supported to a horizontal position, and the extended end of the electric telescopic rod just abuts against the bottom of the auxiliary seat (9), providing support for its horizontal position.

4. A multi-functional rear-entry wheelchair according to claim 1, characterized in that, The two backrests (18) are each equipped with a magnetic lock adapter. When the two backrests (18) are in a closed state, the corresponding components form a locking engagement through magnetic attraction.

5. A multi-functional rear-entry wheelchair according to claim 1, characterized in that, The exerciser fixing base (14) is detachably installed inside the wheelchair frame (4) by bolts (24). The exerciser fixing bracket (5) is installed on the exerciser fixing base (14). The exerciser fixing bracket (5) includes a first bracket (20) and a second bracket (21). One end of the first bracket (20) and the second bracket (21) are hinged to the exerciser fixing base (14). A limiting body (22) is provided on the side of the first bracket (20) close to the second bracket (21). A limiting groove is provided on the limiting body (22). First limiting holes (15) are evenly provided on both sides of the limiting groove. The end of the second bracket (21) away from the exerciser fixing base (14) is installed by a first pin in cooperation with the corresponding first limiting hole (15). A hand exerciser is installed on the first bracket (20), and a foot exerciser is installed on the second bracket (21).

6. A multi-functional rear-entry wheelchair according to claim 5, characterized in that, The first bracket (20) is a hollow structure, and a mechanical telescopic rod (13) is slidably installed inside it. The mechanical telescopic rod (13) is evenly provided with second limiting holes (12). The first bracket (20) is installed by cooperating with the corresponding second limiting hole (12) through the second pin. The hand exerciser is installed at the top of the mechanical telescopic rod (13).

7. A multi-functional rear-entry wheelchair according to claim 5, characterized in that, The foot exerciser includes a second crank (16) and foot pedals. The second crank (16) is rotatably mounted on the second support (21), and foot pedals (7) are installed at both ends of the second crank. The hand exerciser includes a first crank (11) and handles (17). The first crank (11) is rotatably mounted on the first support (20), and handles (17) are installed at both ends of the first crank.

8. A multi-functional rear-entry wheelchair according to claim 1, characterized in that, The upper edge of the wheelchair frame (4) extends upward with a barrier (6), and the barrier (6) is provided with a slot (19).

9. A multi-functional rear-entry wheelchair according to claim 1, characterized in that, The front of the wheelchair frame (4) has an arc-shaped structure.

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