一种轻质电动折叠轮椅
By using carbon fiber components and a two-stage shock absorption mechanism, the problem of inflexible folding in existing folding wheelchairs has been solved, enabling lightweight electric folding wheelchairs to fold quickly and improve comfort, making them suitable for people with spinal and neck sensitivities.
Patent Information
- Application Number
- CN202521509931.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-17
- Publication Date
- 2026-07-17
- Estimated Expiration
- 2035-07-17
AI Technical Summary
Existing folding wheelchairs are not flexible enough when folding, and are cumbersome and laborious to operate, making it difficult to meet the portability requirements.
The support frame, base frame, hinge frame, backrest frame, and other components are made of carbon fiber. The design of the hinge frame, backrest frame, and connecting arm allows the support frame to rotate upwards and the base frame to rotate upwards around the second connecting arm, enabling quick folding. At the same time, the front wheel assembly is equipped with a two-stage shock absorption mechanism, including buffer blocks and springs, to reduce the feeling of bumps.
It enables the rapid folding and unfolding of a lightweight electric folding wheelchair, is easy to operate, and improves portability and comfort, making it especially suitable for people with spinal and neck sensitivities.
Smart Images
Figure CN224505762U_ABST
Abstract
Claims
1. A lightweight electric folding wheelchair comprising a support frame (1), a chassis (2), a backrest frame (6) and a hinged frame (4), the chassis (2) being located below the support frame (1), the hinged frame (4) and the backrest frame (6) being located at the rear side of the support frame (1), characterized in that, The base frame (2) includes a front base frame (21) and a rear base frame (22). The two rear ends of the front base frame (21) are rotatably connected to the two front ends of the rear base frame (22). The front base frame (21) has upwardly extending first connecting arms (23) on both sides. The top of the first connecting arms (23) is rotatably connected to a second connecting arm (3). The support frame (1) has downwardly extending third connecting arms (10) on both sides. The lower end of the third connecting arm (10) is rotatably connected to the second connecting arm (3). The backrest frame (6) The two sides of the hinge frame (4) are rotatably connected to the rear end of the support frame (1), the two top ends of the hinge frame (4) are rotatably connected to the lower end of the backrest frame (6), the two bottom ends of the hinge frame (4) are rotatably connected to the two rear ends of the rear base frame (22), the second connecting arm (3) is located on the outside of the hinge frame (4), and the hinge frame (4) is provided with a clearance position (41) for avoiding the base frame (2); the two front ends of the front base frame (21) are provided with front wheel assemblies (5), and the two rear ends of the second connecting arm (3) are provided with rear wheel assemblies (51).
2. The lightweight power folding wheelchair of claim 1, wherein, The front base frame (21) and the first connecting arm (23) are integrally formed; the front base frame (21) and the rear base frame (22) are rotatably connected and form a U-shaped base frame (2); the rear base frame (22) is provided with a battery box (7).
3. The lightweight power folding wheelchair of claim 1, wherein, The second connecting arm (3) is Γ-shaped. The front end of the second connecting arm (3) is rotatably connected to the top end of the first connecting arm (23), and the lower end of the third connecting arm (10) is rotatably connected to the corner position of the second connecting arm (3). The rear end of the second connecting arm (3) is provided with a pull roller (31).
4. The lightweight electric folding wheelchair according to claim 1, characterized in that, The backrest frame (6) is provided with armrest assemblies (8) on both sides. The armrest assembly (8) includes an armrest bar (81) and a hinge bar (82). The rear end of the armrest bar (81) is rotatably connected to the backrest frame (6), the front end of the armrest bar (81) is rotatably connected to the upper end of the hinge bar (82), and the lower end of the hinge bar (82) is rotatably connected to the support frame (1).
5. The lightweight power folding wheelchair of claim 1, wherein, The support frame (1), base frame (2), hinge frame (4), backrest frame (6), first connecting arm (23), second connecting arm (3), and third connecting arm (10) are made of carbon fiber and / or aluminum alloy.
6. The lightweight power folding wheelchair of claim 1, wherein, The front wheel assembly (5) includes a front wheel (50) and a secondary shock absorption mechanism. The secondary shock absorption mechanism includes a seat (24), a support arm (25), a connecting shaft (28), a buffer block (27), and a spring (26). The connecting shaft (28) is vertically rotatably mounted on the left and right ends of the front chassis (21). The seat (24) is fixedly connected to the lower end of the connecting shaft (28) and located below the front chassis (21). The upper end of the support arm (25) is rotatably connected to the lower end of the seat (24). The lower end of the support arm (25) is rotatably connected to the axle of the front wheel (50). The buffer block (27) is fixed on the support arm (25). One end of the buffer block (27) abuts against the seat (24). The upper end of the spring (26) abuts against the seat (24), and the lower end of the spring (26) abuts against the buffer block (27).
7. The lightweight power folding wheelchair of claim 6, wherein, The secondary shock absorption mechanism also includes an upper nut (29) and a lower nut (212). The upper nut (29) and the lower nut (212) are respectively installed on the wheelchair frame (10) and the seat (24). The upper and lower ends of the connecting shaft (28) are provided with external threads. The upper nut (29) and the lower nut (212) are respectively threaded to the upper and lower ends of the connecting shaft (28). The upper end of the connecting shaft (28) is locked on the wheelchair frame (10) by the upper nut (29), and the lower end of the connecting shaft (28) is locked on the seat (24) by the lower nut (212).
8. The lightweight electric folding wheelchair according to claim 6, characterized in that, There is an angle between the seat (24) and the support arm (25), and the spring (26) and the buffer block (27) are located within the angle, which is an acute angle.
9. The lightweight power folding wheelchair of claim 6, wherein, An upper bearing (211) and a lower bearing (210) are provided between the connecting shaft (28) and the wheelchair bracket (10); an installation channel (215) is provided at the front end of the wheelchair bracket (10) corresponding to the position of the connecting shaft (28), and the upper bearing (211) and the lower bearing (210) are arranged one above the other in the installation channel (215), and the connecting shaft (28) passes through the upper bearing (211) and the lower bearing (210).
10. The lightweight power folding wheelchair of claim 7, wherein, The buffer block (27) is provided with a lower positioning groove (213) at the position corresponding to the lower end of the spring (26), and the lower end of the spring (26) is placed in the lower positioning groove (213). The seat (24) is provided with an upper positioning groove (214) at the position corresponding to the upper end of the spring (26), and the upper end of the spring (26) is placed in the upper positioning groove (214).