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Seat belt retractor and seat belt apparatus having the same

A technology of seat belt retractor and seat belt, which is applied in the directions of seat belt, belt tensioner, transportation and packaging in the car, and achieves the effect of improving position accuracy, low price and simple structure

Inactive Publication Date: 2008-10-01
JOYSON SAFETY SYST JAPAN KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the seat belt retractor described in Patent Document 1, since the shear pin is simply fitted into the axial hole of the spool, if the shear pin acts on the shear pin when the spool and the lock plate rotate relatively, shear load, the shear pin will move in the direction of extraction from the reel

Method used

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  • Seat belt retractor and seat belt apparatus having the same
  • Seat belt retractor and seat belt apparatus having the same
  • Seat belt retractor and seat belt apparatus having the same

Examples

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Embodiment Construction

[0022] Hereinafter, preferred modes for carrying out the present invention will be described with reference to the drawings.

[0023] figure 1 It is a figure which shows typically the seat belt apparatus provided with an example of embodiment of the seat belt retractor of this invention.

[0024] like figure 1 As shown, the seat belt device 1 of this example includes a seat belt retractor 3 fixed to the vehicle body near the vehicle seat 2, as well as a conventional three-point seat belt device using a seat belt retractor; a seat belt 4. Pull out from the seat belt retractor 3, and the seat belt anchor 4a at the front end is fixed on the floor part of the vehicle body or the vehicle seat 2; The seat belt 4 pulled out by the seat belt retractor 3; the tongue piece 6, which is slidably supported on the seat belt 4 guided from the seat belt guide anchor 5; and the belt buckle 7, which is fixed to the floor of the vehicle body The tongue 6 is inserted into the buckle 7 to be en...

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Abstract

In order to limit bending load applied to a shearing member of an energy absorbing mechanism, a shear pin (24) is inserted into both axial holes (9b, 18a) in the axial direction and an external threaded portion (24c) is screwed into and fixed to an internal threaded portion (9c). The shear pin (24) is thus securely fixed to a spool (9). As a relative rotation is generated between the spool (9) and a locking base (18), shearing load acts on the shear pin (24). Since the shear pin (24) is fixed to the spool (9), the shear pin (24) is prevented from moving in a direction of coming off the spool (9). This prevents the locking base (18) from being spaced apart from the spool (9) so that no bending load acts on the shear pin (24) and only shearing load acts on the shear pin (24). Therefore, the load limiting action of the shear pin (24) can be performed substantially only by shearing deformation.

Description

technical field [0001] The present invention relates to the technical field of a seatbelt retractor for retractably winding a seatbelt in a seatbelt device attached to a vehicle. [0002] In particular, it relates to the following seat belt retractor and a seat belt device having the seat belt retractor: the seat belt retractor has a seat belt load limiting mechanism, in the event of a collision with the seat belt wearing state, etc. A large vehicle deceleration occurs, and when the pull-out of the seat belt is prevented in such an emergency, the above-mentioned seat belt load limiting mechanism absorbs the kinetic energy of the occupant to limit the load applied to the seat belt. Background technique [0003] Conventionally, seat belt devices installed in vehicles such as automobiles prevent the occupant from bouncing off the seat by restraining the occupant with the seat belt in the above-mentioned emergency. In this seat belt device, there is a seat belt retractor that w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R22/34
CPCB60R22/3413B60R2022/287B60R2022/288
Inventor 平松幸治
Owner JOYSON SAFETY SYST JAPAN KK
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