一种安全带限力轴组件
By merging the rewind shaft and sleeve of the seat belt force limiting shaft assembly into a single molded structure, the complex processing and assembly difficulties caused by the multi-part structure are solved, resulting in cost reduction and simplified management.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-09-30
- Publication Date
- 2026-07-17
AI Technical Summary
The existing seat belt force limiting shaft assembly consists of multiple parts, which leads to complex processing technology, supply chain management and assembly difficulties.
The rewind shaft and sleeve are combined into a single molded structure, reducing the number of parts. The rewind function is achieved by setting gears inside the sleeve, forming a two-part seat belt force limiting shaft assembly.
It simplifies the processing technology, reduces product costs, and improves supply chain management and assembly efficiency.
Smart Images
Figure CN224511069U_ABST
Abstract
Claims
1. A seat belt force limiting shaft assembly characterized by: The device includes a shaft (1) for wrapping a seat belt, with a first limiting block (2) at the outer end and a second limiting block (3) at the inner end, and the shaft (1), the first limiting block (2), and the second limiting block (3) are integrally formed; it also includes a sleeve (5) with an outer closed end, with a gear (4) at the inner end and a limiting rod (7) at the center of the outer end, and the sleeve (5), the gear (4), and the limiting rod (7) are integrally formed; a connecting groove (8) is provided at the center of the gear (4) and the sleeve (5), the contour shape of the connecting groove (8) is the same as the contour shape of the second limiting block (3), and the second limiting block (3) is inserted into the connecting groove (8).
2. The seat belt force limiting shaft assembly of claim 1, wherein: The first limiting block (2) and the second limiting block (3) have the same shape, both being plum blossom-shaped, including six protrusions spaced at equal angles in the circumferential direction, with adjacent protrusions forming a fitting groove. The connecting groove (8) includes six slots spaced at equal angles in the circumferential direction, with adjacent slots forming a protruding ridge. When the second limiting block (3) is embedded in the connecting groove (8), the protrusions are located in the slots and the protruding ridges are located in the fitting groove.
3. The seat belt force limiting shaft assembly of claim 2, wherein: The outer surface of the sleeve (5) is recessed inward to form a groove, and the root of the limiting rod (7) is fixedly connected to the center of the groove. The outer end of the limiting rod (7) is hemispherical.
4. The seat belt force limiting shaft assembly of claim 3, wherein: The outer wall of the outer end of the sleeve (5) is provided with teeth (6) arranged in a ring to form a ring toothed band.