seat belt tensioner

A safety belt and pre-tensioning technology, which is applied in the direction of safety belts, belt tighteners, transportation and packaging, etc. in the car, and can solve the problems of high cost of permanent magnet actuators

Inactive Publication Date: 2016-06-01
HUGO KERN & LIEBERS & PLATINEN & FEDERNFAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the cost of configuring a permanent magnet actuator is expensive, and it is necessary to monitor whether the seat belt lock is fastened or not
[0006] Known from a U.S. patent US5121887A, the locking device used in the seat belt locking device is a mechanical actuator, but this actuator must be manually activated by the seat belt user

Method used

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Examples

Experimental program
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Embodiment Construction

[0042] figure 1 The seat belt retractor 1 is shown. The belt take-up device 1 can wind a belt 2 onto a belt take-up section 3 of a mandrel 4 . The mandrel 4 has a two-section structure, and is composed of a seat belt tightening section 3 and a driving section 5 . The mandrel is rotatable in the safety belt casing 6 .

[0043] Furthermore, the belt tensioner 1 has a drive spring 7 whose outer end 8 is fixedly connected to a plastic housing 9 . The plastic shell 9 uses three pins 10 to be connected and fixed with the safety belt casing 6 at the side.

[0044] The main drive spring 7 is connected with its inner end 11 in a rotationally fixed manner to the drive section 5 of the spindle 4 . Therefore, when rotating in the unwinding direction b, that is, when the safety belt 2 is unrolled, the mandrel 4 is tensioned by the main drive spring 7 in the winding direction.

[0045] In addition, the seat belt tightening device 1 also includes a ratchet 12 that is adjacent to the mai...

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PUM

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Abstract

The invention discloses a seatbelt-retracting device. The device is provided with a core shaft and a main drive spring which pushes the core shaft in a retracting direction of the seatbelt, and a ratchet wheel rotatably linkage with the core shaft, and a blocking device with a locking lever for blocking a rotational movement of the ratchet wheel in the retracting direction, and a compensating spring arranged such that when the ratchet wheel is blocked, the compensating spring transmits to the core shaft a prestressing force counteracting the prestressing force of the main drive spring. The blocking device has a control lever for operating the locking lever, wherein the control level rotates around a rotation shaft arranged in parallel with an axis of the core shaft, and has a first engagement element and a second engagement element which are engagable on at least one gauge finder of a torque-resistant actuator disk which is connected with the core shaft. Any part of the core shaft has at least one of the engagement elements which is engaged at the gauge finder of the actuator disk, or accurately, another engagement element is arranged which is engaged on at least one gauge finder of the torque-resistant actuator disk which is connected with the core shaft.

Description

technical field [0001] The invention relates to a safety belt tightening device. Background technique [0002] Known seat belt tightening devices of this type include DE102006052167B3, DE102005017367A1 or DE10102005017369B3. [0003] The known seat belt tightening device is equipped with a mandrel and a main drive spring that pushes the mandrel to the tightening direction of the seat belt, wherein a locking ratchet is also provided on the ratchet and the locking device linked with the mandrel The stop lever rotates in the tightening direction, the locking device is provided with a balance spring, which is arranged in such a way that when the ratchet is locked, the tensioning force counteracting the tensioning force of the main drive spring is transmitted to the on the mandrel. [0004] For a fastened seat belt, the ideal parameter value required is to reduce the take-up torque applied to the spindle by the main drive spring. This therefore creates a reduced torque, with t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R22/44
CPCB60R22/44B60R2022/4433
Inventor M·贝纳
Owner HUGO KERN & LIEBERS & PLATINEN & FEDERNFAB
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