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Safety device for motor vehicle

一种安全装置、车用的技术，应用在车辆安全安排、行人/乘员安全布置、车辆部件等方向，能够解决无法获得乘客保护、司机恐慌、无法致动车辆乘客约束装置等问题

Inactive Publication Date: 2006-02-08
DENSO CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, with such a vehicle occupant restraint device, there is a problem that the vehicle occupant restraint cannot be actuated at an appropriate time point if the vehicle driving operation to avoid the vehicle collision before the collision causes the actual collision time point to deviate from the estimated collision time point device
Therefore, in the background technology, if the maximum pulling force is always applied as a fixed pulling force after the seat belt is wound, there will be a situation where the driver feels panic
On the other hand, if the tension on the seat belt is reduced after winding, there is a problem that the necessary occupant protection cannot be obtained

Method used

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  • Safety device for motor vehicle
  • Safety device for motor vehicle
  • Safety device for motor vehicle

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Embodiment Construction

[0028] Firstly, the basic structure of the vehicle safety device related to the first to fourth aspects of the present invention will be described. The vehicle safety device related to the first to fourth aspects of the invention includes: a distance information detection unit for detecting the distance of the collision object and the relative speed relative to the collision object; The actuation start time point passes through the predetermined actuation rise time to complete the transition to the occupant protection state, reducing the collision damage; and a calculation and control unit, which is used to command the start of the actuation when the available time before the collision decreases to a predetermined threshold time , the available time before collision is the time to an estimated collision time point calculated from the detected distance and relative speed, and the predetermined threshold time is set to be equal to or longer than the actuation rise time.

[0029]...

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Abstract

In a passenger restraint device for an automotive vehicle, when the relative speed of the vehicle with respect to a crash object changes as a result of a driving maneuver of the vehicle performed before a crash, the actual crash time deviates from an estimated crash time calculated from the distance and the relative speed of the vehicle and the crash object. To resolve this, the actuation timing, actuation rise time and seat belt tension of a seat belt reeling-in device are varied on the basis of information relating to a deceleration rate that is a rate of decrease of the relative speed.

Description

technical field [0001] The present invention relates to a safety device for a vehicle which improves occupant protection when the vehicle is at serious risk of collision by, for example, wrapping a seat belt. Background technique [0002] Known occupant restraint devices are actuated based on pre-crash sensing to restrain the occupant. For example, in the passenger restraint device disclosed in JP-A-9-175327, when the time to collision (available time before collision) is less than a predetermined threshold value, the seat belt winding action is started, wherein the available time before collision is the value obtained by dividing the distance to the colliding object by the current value of the relative velocity, the predetermined threshold is set at least longer than a minimum time below which collision avoidance is impossible. That is, at a time point (actuation start time point) earlier than the estimated collision time point by the above-mentioned predetermined threshol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60R22/46B60R21/01B60R21/0134
CPCB60R2021/01272G06K9/00805B60R21/0134G06V20/58B60R21/01B60R22/46
Inventor 伊佐冶和美加藤秀树
Owner DENSO CORP
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