Automobile seat

Abstract

The vehicle seat with a simple structure provided by the present invention can usually ensure the gap between the passenger's head and the headrest, and when impacted by the rear of the vehicle, the headrest can be moved forward. At the same time, the headrest can return to the original position after the impact, and the resistance can be maintained when returning , can reduce the load on the neck. In the vehicle seat, an elastic body (30) is installed on either side of the seat back frame (6) and the side frame (4), and a guide hole (20a) for guiding the elastic body (30) is formed on the other side of the two frames (4, 6). . And form a recess (20b) for holding the elastic body (30) at the front end of the guide hole (20a), usually when sitting, the elastic body (30) is inserted in the recess (20b) to hold the seat back frame (6) On the side frame (4), when the rear impact occurs, the elastic body (30) deforms and breaks away from the recess (20b), and moves backward along the guide hole (20a), and the seat back frame (6) can swing around the rotating hinge , to move the head restraint to the front.

Description

technical field [0001] The present invention relates to a vehicle seat capable of preventing a passenger's head from shaking when impacted from the rear of a vehicle. Background technique [0002] In a vehicle seat, a headrest is usually provided above the seat back. When the passenger is seated, there is a prescribed gap between the passenger's head and the headrest. The neck remains behind, increasing the load on the neck and causing head tremors. [0003] Therefore, the smaller the gap between the head and the headrest, the damage can be minimized as much as possible. Even in the normal use state, the head often touches the headrest, and the head rarely moves, and there is interference with the headrest. Problems with feeling unpleasant. [0004] In the conventionally proposed seat, the headrest connected to the pressure receiving part is installed so as to be able to swing freely, and at the same time, the coil spring is constantly biased to the rear, and when an impac...

AI Technical Summary

Problems solved by technology

[0004] In the conventionally proposed seat, the headrest connected to the pressure receiving part is installed so as to be able to swing freely, and at the same time, the coil spring is constantly biased to the rear, and when an impact is received from the rear of the vehicle, the load input to the pressure receiving part resists the coil spring The elastic force of the headrest moves the headrest forward. After the impact, the headrest in contact with the head returns to its original position directly, so there is still the problem of increasing the load on the neck (for example, refer to Patent Document 1).

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