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Seat belt retractor, seat belt apparatus, and seat belt winding method

A technology of winding device and seat belt, which is applied in the direction of seat belt, belt tensioner, transportation and packaging in the car to achieve the effect of efficient seat belt winding action

Inactive Publication Date: 2011-06-08
JOYSON SAFETY SYST JAPAN KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, in the invention of Patent Document 1, which repeats the winding operation a predetermined number of times, there is a possibility that the motor may be unnecessarily driven to continue the winding operation before the winding is completed.

Method used

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  • Seat belt retractor, seat belt apparatus, and seat belt winding method
  • Seat belt retractor, seat belt apparatus, and seat belt winding method
  • Seat belt retractor, seat belt apparatus, and seat belt winding method

Examples

Experimental program
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Effect test

no. 1 approach

[0026] figure 1 It is a schematic diagram of a configuration example of a seat belt device including the seat belt take-up device according to the first embodiment of the present invention. The seat belt device is mounted on a vehicle seat and, as shown in the figure, has a seat belt take-up device 1 , a seat belt 2 , a guide anchor 3 , a seat belt anchor 4 , a tongue plate 5 and a buckle 6 .

[0027] The seat belt take-up device 1 is a device for winding the seat belt 2 by power of an electric motor, and is fixed inside the side of the vehicle body or the like. One end of the seat belt 2 is mounted on the seat belt retractor 1 , and the other end is mounted on a seat belt anchor 4 fixed near the seat belt retractor 1 via a guide holder 3 provided near the upper part of the center pillar.

[0028] On the seat belt 2 , a tongue plate 5 is provided so as to be slidable within a predetermined range between the folded-back portion of the guide anchor 3 and the seat belt anchor 4 ...

no. 2 approach

[0067] Next, a seat belt take-up device according to a second embodiment of the present invention will be described. The seat belt retractor of the present embodiment differs from the seat belt retractor of the first embodiment in the content of the retry determination process in the seat belt retraction process. Everything else is the same. Descriptions of the same contents as those in the first embodiment are omitted.

[0068] Figure 7 It is a flowchart showing the procedure of the retry judgment process according to this embodiment. First, the retry judging unit 405 judges whether or not the motor driving frequency (i) has reached the maximum driving frequency (step S701 ). The meaning of the maximum number of driving times is the same as that described in the first embodiment. When the motor driving frequency (i) reaches the maximum driving frequency ("No" in step S701), the same as the processing of the first embodiment ( Figure 6 ) similarly, the retry judging uni...

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Abstract

In order to provide a seat belt retractor which can conduct effective winding-up of a seat belt, the seat belt retractor of the present invention comprises a control unit (123) which stops actuation of a motor when an overload of the motor is detected and restarts the actuation of the motor after a lapse of a predetermined time period.; The control unit (123) comprises a motor actuation timing section (403) which clocks a time period from the start of the actuation to the stop of the actuation of the motor (motor actuating time period), a motor actuation counting section (404) which counts the number of times of starting the actuation of the motor (motor actuation number), and a retry determining section (405) which determines, based on the motor actuating time period and the motor actuation number, whether or not it is required to restart the actuation of the motor which is stopped by detection of the overload.

Description

technical field [0001] The invention relates to a seat belt winding technology, in particular to a seat belt winding device for winding a seat belt by a motor, a seat belt device with the seat belt winding device and a safety belt winding device for a motor Seat belt winding method. Background technique [0002] Vehicles such as automobiles are equipped with seat belt devices for holding occupants on seats. The seat belt device is composed of a seat belt (also called webbing), a buckle, a tongue plate, a retractor, and the like. [0003] Among them, the retractor is a device for winding up a seat belt (seat belt winding device). In addition to the mechanism for rewinding by elastic force, the retractor also has a pretensioning device that activates the piston by gunpowder explosion in emergency situations such as vehicle collisions, and pulls in the seat belt to restrain the occupant on the seat, etc. . And in recent years, there have been electric retractors that have a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R22/34
CPCB60R22/46B60R2022/4666B60R2022/029
Inventor 高尾雅人田中康二村上大辅
Owner JOYSON SAFETY SYST JAPAN KK
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