Seat belt device

A seat belt and seat technology, applied in the field of seat belt devices, can solve the problems of poor operation of the preloading mechanism and achieve the effect of maintaining the clutch release state

Active Publication Date: 2010-03-24
AUTOLIV DEV AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem of adversely affecting the operation of the preload mechanism

Method used

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Examples

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Embodiment Construction

[0074] Hereinafter, a seat belt device according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0075] Such as figure 1 As shown, the seat belt device 10 including the retracting device according to this embodiment includes:

[0076] Main shaft 12, which is used to wind up the seat belt (not shown);

[0077] A take-up spring device 13, which is used to apply force to the main shaft 12 in the take-up direction of the seat belt;

[0078] A locking mechanism 14, which locks the pull-out action of the seat belt according to the acceleration detected by the acceleration sensor (not shown);

[0079] motor 34, which is an electric solenoid for generating power to rotate the spindle 12;

[0080] a preload mechanism 15 for generating other power to rotate the main shaft 12;

[0081] The power transmission mechanism 17 is used to transmit the power from the motor 34 to the main shaft 12 .

[0082] The ma...

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PUM

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Abstract

Provided is a seat belt device, which can cut the connection between a spindle for winding up a seat belt and an electric actuator reliably, when a pretentioner mechanism acts, thereby to constrain apassenger reliably at the pretentioner acting time. When a pretentioner mechanism (15) acts so that an engaging portion (49a) moves in the direction away from a first rotary member (50) while using the rotation of the first rotary member (50) by the pretentioner mechanism (15), a clutch (52) is elastically deformed by an engaging member (49) so that it regulates the movement of the engaging member(49), thereby to uncouple an electric actuator(34) and a spindle (12). The engaging member (49) rocks such that the engaging portion (49a) engages with an engaged portion (50a). A guide portion (43b)guides an extending portion (49c) extending to the opposite side of the engaging portion (49a) with respect to the hinge pin of the engaging member (49). The guide portion (43b) includes a radial guide portion (43a) for guiding the extending portion (49c) to move radially outward, as viewed from the center of the first rotary member (50). The radial guide portion (43a) has such a face to contactthe extending portion (49c) as has a center of curvature toward the extending portion.

Description

technical field [0001] The present invention relates to a seat belt device, and more particularly to a seat belt device including an electric solenoid using a motor and an explosive solenoid (preload mechanism). Background technique [0002] In the past, when there is a risk of collision in this type of seat belt device, the sensor will operate before the collision, and the electric solenoid will be operated to wind up the seat belt (webbing) to lightly lock the passenger. In addition, when a collision occurs, it is widely known that a seat belt is wound up by a preload mechanism to lock an occupant more reliably (for example, refer to Patent Document 1). [0003] In the seat belt device described in Patent Document 1, a clutch is inserted in the power transmission mechanism that transmits power from the electric solenoid to the main shaft to prevent rotation from the main shaft side from being transmitted to the solenoid. [0004] This clutch includes a gear and a rotator ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R22/48B60R22/46
CPCB60R22/46B60R2022/468B60R22/4628B60R2022/4666
Inventor 前村英二吉川博子福原佳生伊东克弘长友纯一
Owner AUTOLIV DEV AB
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