wheelchair
The wheelchair's support mechanism stabilizes the footrest by limiting its displacement under load, ensuring safety and reliability through a swingable arm and restriction system, addressing the issue of footrest instability in existing designs.
JP7750750B2Active Publication Date: 2025-10-07CHUO SPRING CO LTD +1
Patent Information
- Application Number
- JP2022000497
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2021-01-20
- Filing Date
- 2022-01-05
- Publication Date
- 2025-10-07
- Estimated Expiration
- 2042-01-05
AI Technical Summary
Technical Problem
Existing wheelchairs do not effectively prevent the footrest from excessive displacement when a seated person's weight acts on it, leading to potential instability.
Method used
A wheelchair design featuring a support mechanism with a swingably connected support arm, first and second links, and a restriction portion that limits the second connection center's movement away from a predetermined line, ensuring the footrest remains stable under load.
Benefits of technology
The design prevents significant displacement of the footrest, enhancing safety and reliability by maintaining the footrest in position even under heavy loads, without compromising ease of use or requiring complex mechanisms.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 0007750750000001 
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Abstract
To disclose one example of a wheelchair capable of restricting a footrest from being largely displaced when the weight of a sitting person acts on the footrest.SOLUTION: A wheelchair 1 includes a restriction part 58 for restricting a second connection center O2 from separating with respect to a consideration line Lo by over a predetermined dimension. Thus, even when a large load acts on a footrest 4A in a state where the footrest 4A is located at a use position, the footrest 4A can be restricted from largely deviating from the use position toward a retreat position. Furthermore, when the weight of a sitting person acts on the footrest 4A, the footrest 4A is restricted from being largely displaced in the wheelchair 1.SELECTED DRAWING: Figure 6
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Citation Information
Patent Citations
Wheelchair
CN107693231A
JP1992090324U
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JP2001511047A
Stand-up wheelchair
JP2009072591A
Paper sheet take-in device
JP2016020280A