发明名称 |
Retractor with electro-rheological lock |
摘要 |
According to the present invention a seat belt reel is mounted on a housing by a reel shaft. A locking mechanism for the reel includes a housing of electrically conductive material mounted on the retractor housing and defining a closed cavity communicating with the end of the reel shaft. A disc shaped electrode is located in the cavity of the housing and is attached on the end of the reel shaft by an electrically insulating connector. An electro-rheological fluid fills the cavity to fill the space between the electrode and the housing. An electrical circuit including an inertia sensor and a high voltage source applies a voltage differential between the electrode and the housing upon the occurrence of a vehicle deceleration condition so that the electro-rheological fluid changes to a solid to fix the electrode to the housing and thereby lock the reel shaft against rotation to fix the length of the seat belt.
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申请公布号 |
US4815674(A) |
申请公布日期 |
1989.03.28 |
申请号 |
US19870135714 |
申请日期 |
1987.12.21 |
申请人 |
GENERAL MOTORS CORPORATION |
发明人 |
BLAKE, THOMAS B.;KURTTI, GARY R. |
分类号 |
B60R22/343;F16D37/00;(IPC1-7):B60R22/40 |
主分类号 |
B60R22/343 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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