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seat belt controls

A control device and technology of seat belts, which are applied in the directions of seat belts, belt tensioners, transportation and packaging in vehicles, etc., can solve the problem of increasing the coiling amount of the body-sensing alarm seat belt, increasing the coiling amount of the seat belt, and failing to tighten the seat belt. Fixed seat and occupant issues

Active Publication Date: 2022-01-25
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the degree of tightness of the seat belt before the somatosensory alarm is high, if the amount of seat belt winding at the initial stage of the somatosensory alarm is relatively increased as in the above-mentioned existing seat belt control device, there will be a problem with the somatosensory alarm. Initial Overtightening Seat Occupant Concerns
On the other hand, when the degree of tightness of the seat belt is low, even if the amount of seat belt winding at the initial stage of the somatosensory alarm is relatively increased like the above-mentioned existing seat belt control device, it is impossible to pass the seat belt. If the seat occupant is sufficiently fastened, there is a concern that the effectiveness of the sensory alarm based on the seat belt will be reduced
[0006] In this way, in the above-mentioned conventional seat belt control device, there are cases where it is not possible to give the seat occupant an appropriate somatosensory alarm based on the seat belt.

Method used

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no. 1 approach

[0018] figure 1 It is a schematic configuration diagram of the seat belt device 100 and the electronic control unit 200 for controlling the seat belt device 100 according to the first embodiment of the present invention.

[0019] The seat belt device 100 is, for example, a device that is attached to a seat of a mobile body such as a vehicle for restraining a seat occupant to the seat. The seat belt device 100 of this embodiment includes a seat belt 1 , a spool 2 , a coil spring 3 , a power transmission mechanism 4 , a motor 5 , a voltage adjustment circuit 6 , a battery 7 , and a current sensor 8 .

[0020] The seat belt 1 is a belt-shaped belt for restraining a seat occupant to the seat.

[0021] The spool 2 is a member for winding and storing the seat belt 1 in layers on the outer peripheral surface of the belt take-up portion 22 , and includes a spool rotating shaft 21 and a cylindrical belt take-up portion 22 , The webbing take-up unit 22 is fixed to the spool rotating s...

no. 2 approach

[0063] Next, a second embodiment of the present invention will be described. In the present embodiment, the configuration of the motion sensing alarm operation implementing unit 203 is different from that in the first embodiment. The following description will focus on this difference.

[0064] Figure 4 It is a timing chart explaining the operation of the sensory alarm control of this embodiment.

[0065] In the above-mentioned first embodiment, when the sensory alarm operation is started at time t3, the forward rotation operation of causing the motor 5 to rotate forward and the operation of short-circuiting the terminals of the motor 5 to place the motor 5 in the short-circuit braking state are repeated alternately. Braking action, thereby increasing the tightness of the seat belt step by step.

[0066] For this, in this embodiment, if Figure 4 As shown, when the sensory alarm is activated, the motor 5 is reversed in the reverse direction during the period of the brakin...

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Abstract

The present invention provides a seat belt control device (200) for giving a seat occupant an appropriate somatosensory alarm based on the seat belt. The seat occupant is given a somatosensory alarm based on the change in the closeness of the seat occupant. The somatosensory alarm control unit is configured to include: an adaptation action implementation unit (202), which implements an adaptation action, and controls the time for the motor to rotate forward based on the motor current value when the motor (5) is rotated forward, so that the seat belt is tightly attached. Degree control is the initial seat belt tightness; and the body-sensing alarm action implementation part (203), implements the body-sensing alarm action, repeats the forward rotation of the motor so that the seat belt tightness is gradually improved from the initial seat belt tightness At least one of the rotation action, the braking action that puts the motor in the short-circuit braking state, or the reverse action that makes the motor reverse, and the adaptation action is performed before the somatosensory alarm action is implemented.

Description

technical field [0001] The present invention relates to seat belt control devices. Background technique [0002] Patent Document 1 discloses, as a conventional seat belt control device, a configuration capable of increasing or decreasing the tension of a seat belt (webbing) for restraining a seat occupant of a vehicle by repeating a plurality of times. The seat belt control device performs the operation of the seat belt, that is, alternately repeats the winding operation and the drawing operation of the seat belt, and provides a sensory alarm based on the seat belt to the seat occupant. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2007-022400 [0004] However, the above-mentioned conventional seat belt control device is configured so that the amount of seat belt winding by the seat belt winding operation in the initial stage of the sensory alarm is larger than that in the later stage of the sensory alarm. Winding amount. [0005] The tightness of the seat bel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R22/34B60R22/44B60R22/46
CPCB60R22/34B60R22/44B60R22/46B60R2022/4473B60R2022/4666B60R16/023
Inventor 泽井俊一郎松村健佐藤润
Owner TOYOTA JIDOSHA KK