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Seat belt retractor

A technology of seat belts and retractors, which is applied in the directions of seat belts, belt tensioners, belt control systems, etc. in the car, can solve problems such as changes in acceleration detection sensitivity, delay the start timing of locking, increase the pull-out amount, and reduce the The effect of pressure

Active Publication Date: 2022-01-25
AUTOLIV DEV AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of acceleration sensor, for example, when a strong braking force acts on the vehicle, the acceleration sensor rotates relative to the seat belt device, so that the acceleration detection sensitivity of the acceleration sensor changes

Method used

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  • Seat belt retractor
  • Seat belt retractor
  • Seat belt retractor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] According to the following drawings, the seat belt of an embodiment of the present invention is described in detail below relates to the retractor.

[0043] According to the present embodiment with the seat belt retractor 10 is mounted on the reclining seat back of a seat (not shown), may be performed together with the seat back in the vehicle longitudinal direction, i.e., inclined pouring operation.

[0044] like figure 1 , The seat belt retractor 10 is provided with: (not shown) wound around the mandrel 20 made of metal such as aluminum alloy of the seat belt; the rotation of the mandrel 20 rotatably supporting a metal U-shaped frame 11; 11a disposed on the outside of one side plate of the frame 11, to mechanically lock the operation of pulling the seat belt locking mechanism 40; sensor means 60 includes an acceleration sensor 70; the other is arranged in block 11 outside of one side plate 11b of the spring winding device winding mandrel 20 in the direction of urging the ...

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PUM

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Abstract

The present invention relates to a retractor for a seat belt. The acceleration sensor has: a sensor cover (71) that is integrally tilted with the seat back; a sensor cover (72) that is supported swingably relative to the sensor cover and has an inertial body support surface that supports the inertial body; An inertial body that displaces from a neutral position when the value exceeds a predetermined value; and an operating member (74), (75) that moves the locking mechanism (40) to the locking side in conjunction with the movement of the inertial body. The sensor housing has a plurality of external teeth and an external tooth portion having a discontinuity ( 83 ) without external teeth. There is a link member (90), which is connected with the shaft (22) of the mandrel (20) in a frictional connection, and when the mandrel rotates in the direction of pulling out the seat belt, it will move toward the engaging part (92) The first direction of engagement with the external tooth portion (84) rotates, and when the core shaft rotates in the direction of winding the seat belt, it rotates in the second direction of the engagement portion separating from the external tooth portion.

Description

Technical field [0001] The present invention relates to a seat belt retractor, and more specifically relates to a seat belt mounted on a reclining seat back with a retractor. Background technique [0002] The seat belt device mounted on a vehicle is drawn by the retractor by the seat back from the seat belt the seat belt to restrain the occupant seated on the seat, so that the vehicle or the like collides occupant protection apparatus case. Seat belt retractor, when a vehicle collision occurs, is larger than a predetermined value to generate an acceleration in the horizontal direction, the acceleration sensor detects the acceleration, and starting the seat belt locking mechanism, then, at this time you can not pull the seat belt. As for the acceleration sensor inertial body, known inertial body using a ball and a separate inertial body using the inertial body. [0003] On the reclining seat back equipped with the acceleration sensor provided with such a seat belt retractor, then,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R22/26B60R22/34
CPCB60R22/26B60R22/34B60R22/40B60R2022/402B60R22/48B60R2022/4808
Inventor 新屋祐介日端岩太
Owner AUTOLIV DEV AB