Knee brace angle limiter

Abstract

This invention discloses a knee support angle limiter for mounting on the periphery of an inner toothed ring. It comprises a pull handle, a positioning seat, a spring, and an adjusting pin. By aligning the pull handle and positioning seat, the spring is positioned inside a guide groove. The adjusting pin is inserted after the pin hole and displacement groove are aligned. An external force is applied to pull the spring vertically outwards towards the inner toothed ring, causing the spring to move the adjusting pin vertically upwards and disengage from its original toothed position. After adjusting to a predetermined angle, the external force is released to reset the spring, allowing the adjusting pin to re-engage in the corresponding toothed position. This mechanism, with its connection and guiding action, allows the adjusting pin to smoothly switch between different angle positions on the inner toothed ring, thereby enhancing the overall durability and ease of operation.

Claims

1. A knee support angle limiter, for assembly around an internal toothed ring, comprising: a pull handle seat, one end of which is provided with an extended driving portion, the surface of which has a guide groove and a pin hole at the front end of the guide groove; a positioning seat, inserted into the pull handle seat, the positioning seat having a through-hole with a locking groove, the locking groove extending to the front end to form a top abutment block, the side wall of the top abutment block having a protrusion for alignment with a spring, the top surface of the positioning seat having a displacement groove communicating with the locking groove; and the spring being assembled inside the guide groove, so that the pull handle seat and the positioning seat are aligned relative to each other, such that after the pin hole overlaps and aligns with the displacement groove, an adjusting pin is inserted into the pin hole, so that the pull handle seat can be stretched by an external force to affect the spring to produce elastic deformation, and the displacement can be adjusted within the space of the displacement groove.

2. The knee support movement angle limiter as described in claim 1, wherein, The lower edge of the pull handle seat, near the connection point of the extended drive part, has a first thickened part formed.

3. The knee support movement angle limiter as described in claim 1, wherein, The bottom of the positioning seat has a platform flange extending outward on both sides, which is used to engage and limit the bottom edge of the pull handle seat.

4. The knee support movement angle limiter as described in claim 1, wherein, The adjusting pin is located at a corresponding position below the spring, and the guide groove restricts one of the spring's extension and retraction paths to achieve a vertical radial displacement.

5. The knee support movement angle limiter as described in claim 2, wherein, The first thickened portion at the bottom of the pull handle presses against the radially outer edge of the internal toothed ring, so that the displacement groove is aligned with a tooth groove formed by the internal toothed ring.

6. The knee support movement angle limiter as described in claim 5, wherein, When the pull handle is continuously pulled vertically outward, the guide groove can drive the adjusting pin to move vertically upward in sync, causing it to disengage from the original meshing position of the toothed groove.

7. The knee support movement angle limiter as described in claim 5, wherein, The pull handle can be adjusted to a predetermined angle position along one of the annular tracks of the internal toothed ring, and then reset by the spring, so that the adjusting pin is re-embedded in the corresponding tooth groove to complete the movement adjustment.

8. The knee support movement angle limiter as described in claim 1, wherein, The top surface of the pull handle can be further fitted with a cover, which has a hollow internal space.

9. The knee support movement angle limiter as described in claim 8, wherein, The bottom of the cover extends into a hook portion, which, after the cover is assembled on the top surface of the pull handle seat, hooks onto a platform flange of the pull handle seat to limit the pull handle seat.

10. The knee support movement angle limiter as described in claim 9, wherein, The bottom of the cover has a second thickened portion extending from both sides. When the hook and the handle are assembled, the second thickened portion covers the periphery of the handle.

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