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Safety belt rolling apparatus and safety belt device with the rolling apparatus

A shrinking device and seat belt technology, which is applied in the direction of seat belts, belt tighteners, combined energy-absorbing devices, etc., can solve the problems of large deceleration and occupant seat belt impact, so as to protect the body and prevent radial The effect of size increase

Inactive Publication Date: 2004-10-20
JOYSON SAFETY SYST JAPAN KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in the seat belt retractor of this existing seat belt device, when the seat belt restrains and protects the occupant at an emergency such as a vehicle collision, the occupant will fall due to a large inertia due to a large vehicle deceleration. to move forward
Therefore, a large load is applied to the seat belt, and at the same time, the occupant receives a large impact from the seat belt.

Method used

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  • Safety belt rolling apparatus and safety belt device with the rolling apparatus
  • Safety belt rolling apparatus and safety belt device with the rolling apparatus
  • Safety belt rolling apparatus and safety belt device with the rolling apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0095] figure 1 It is a longitudinal sectional view showing the overall schematic structure of a seat belt retractor device according to an embodiment of the present invention.

[0096] figure 1Among them, the shrinking device 1' has: a frame 2, a reel (approximately cylindrical member) 4 for winding a seat belt 3, a torsion bar 7 (shaft member) made of twistable and deformable materials, and a very fast detection of emergency events. The deceleration sensing device 5 that operates when the vehicle decelerates greatly, the lock mechanism 6 that prevents the rotation of the spool 4 at least in the direction of pulling out the seat belt, and the spring device 8 equipped with a coil spring (not shown) are activated in an emergency. A pretensioner 11 that generates a belt winding torque, and a sleeve 10 that transmits the belt winding torque of the pretensioner 11 to the spool 4 .

[0097] The lock mechanism 6 includes a lock base 14 that holds the ratchet 13 in a swingable ma...

no. 2 approach

[0149] Figure 11 Representing the first example of the implementation of the seat belt retractor of the present invention, (a) is respectively the same as the aforementioned Figure 16 The spool, the torsion bar, and the lock base of the seat belt retractor shown correspond to and partly show a sectional view of these, (b) schematically shows the energy absorbing mechanism adopted by the seat belt retractor of the first example, And along the sectional view of IB-IB line in (a), Fig. 12 is Figure 11 (a) An exploded perspective view of the part shown. In addition, in the description of each example of the embodiment of the present invention, the Figure 16 The same constituent elements of the shown seat belt retractor are marked with the same reference numerals, and their detailed descriptions are omitted, while for Figure 11 (a) of the seat belt retractor Figure 11 Components not specified in the Figure 16 The seat belt retractors shown have the same components.

[015...

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PUM

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Abstract

In an emergency, when a spool (4) rotates in the direction of unwinding a seat belt relative to a locking base (14), a strip (22) is deformed by a guide groove (21d) of a guide plate (21) fitted to the locking base (14), thereby absorbing impact energy, generating an EA load, and restricting the load applied to the seat belt (3). When a uniformly narrow portion (22d) whose width is narrower than that of a main portion (22a) is deformed, a uniformly small EA load is generated. When a sloping portion (22e) is deformed, a continuously decreasing EA load is generated. Therefore, EA load due to deformation of the strip (22) is variable, and an energy absorbing mechanism has a simple structure and can be produced at a low cost.

Description

technical field [0001] The present invention relates to the technical field of a seat belt retractor capable of winding and pulling out a seat belt and a seat belt device equipped with the retractor, in particular to a safety belt retractor equipped with an energy absorbing mechanism (hereinafter also referred to as The technical field of the seat belt retractor of EA organization) and the seat belt device equipped with the retractor, in the state of fastening the seat belt, when the emergency such as vehicle collision, etc. acts on the vehicle such as a large vehicle deceleration to stop When the seat belt is stretched, the energy absorbing mechanism absorbs the occupant's impact energy that acts on the occupant and causes the occupant to move by inertia through the seat belt. Background technique [0002] The seat belt device installed on the vehicle seat is an indispensable device for restraining the occupant who moves suddenly due to the acceleration caused by the collis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R22/28B60R22/34B60R22/46
CPCB60R22/3413B60R22/4676B60R2022/286B60R2022/287
Inventor 盐谷昌广滨上哲也平松幸治
Owner JOYSON SAFETY SYST JAPAN KK
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