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Seat belt retractor

A technology of seat belts and retractors, which is applied in the direction of seat belts, belt retractors, and vehicle safety arrangements in vehicles, and can solve problems such as ineffective seat belt retractors

Inactive Publication Date: 2004-09-29
TAKATA PETRI ULM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the tensioning device does not act, it is because there is no dangerous situation in the current state. Therefore, the tensioning pawl is in a relaxed state, and does not mesh with the ratchet gear of the seat belt retractor, so that the seat belt retractor does not work

Method used

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  • Seat belt retractor
  • Seat belt retractor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0008] figure 1 A seat belt retractor 10 is shown, the retraction pawls of which and the seat belt reel for retracting the seat belt are not shown for clarity. figure 1 A ratchet gear 20 of the seat belt retractor 10 is depicted, which is rotatably fixedly connected to a seat belt reel (not shown).

[0009] A tension pawl 30 is connected to the ratchet 20 such that the ratchet 20 can be rotated exclusively in the belt winding direction 40 . The ratchet 20 cannot move in the direction of unwinding the seat belt, ie in the opposite direction to that indicated by the arrow 40, due to the blocking position of the tensioning pawl.

[0010] From figure 1 It can be seen that the teeth of the ratchet wheel 20 and the tension pawl are designed in such a way that a form-fitting connection can be formed due to the undercut. Due to this form-fitting connection, such as figure 1 As shown, the tightening pawl 30 cannot be easily pulled out from its blocking position and moved to the rel...

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PUM

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Abstract

A belt retractor for a seatbelt comprising a retractor pawl which blocks the seatbelt from being pulled out of the belt retractor in the event of an accident, and having a tightening device which tightens the seatbelt in a hazardous situation, the tightening device includes a tightening pawl which, in a blocking position, blocks the belt retractor in the belt uncoiling direction and, in a release position, leaves the belt retractor unaffected. The tightening pawl is assigned a sensor which monitors the position of the tightening pawl and transmits a signal indicating the position of the tightening pawl to a control device of the tightening device.

Description

technical field [0001] The invention relates to a seat belt retractor, which has a seat belt reel and a retracting pawl. Background technique [0002] A conventional seat belt retractor is disclosed in published European patent specification EP1 225 105A2 (herein cited). The conventional seat belt retractor has a retracting pawl that prevents the seat belt from being pulled out of the seat belt retractor in the event of an accident. For example, pulling the seat belt out of the seat belt retractor at a speed faster than a predetermined limit speed may initiate locking of the retracting pawl. In addition, the traditional seat belt retractor has a tensioning device that can tighten the seat belt in dangerous situations. To tighten the seat belt, the belt reel of the seat belt retractor is rotated in the belt winding direction, with the result that the seat belt is retracted by the retractor and thus tensioned. This "tensioned position" of the seat belt is secured by a tensi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R21/01B60R22/36B60R22/46B60R22/48
CPCB60R22/48B60R22/46B60R2022/469B60R2022/4833
Inventor 罗兰·施纳布尔
Owner TAKATA PETRI ULM