Active headrest device for automobile seat

Abstract

The invention relates to an active headrest device for an automobile seat. The active headrest device for the automobile seat comprises a backrest framework (1), a triggering plate (2) arranged on the backrest framework (1), and a bracket structure fixedly connected with the triggering plate (2) for supporting a headrest. The backrest framework (1) is fixedly provided with a guide plate (4) with a through groove (3). The triggering plate (2) is in sliding connection on the guide plate (4) through a sliding part in slide match with the through groove (3). An elastic device for providing an elastic restoring force to the triggering plate (2) is arranged between the guide plate (4) and the sliding part. The direction of the elastic restoring force provided by the elastic device to the triggering plate (2) and the sliding direction of the sliding part are on a same straight line. With the adoption of the technical scheme provided by the invention, the direction of the elastic restoring force provided by the elastic device to the triggering plate and the sliding direction of the sliding part are on a same straight line so that the triggering plate triggered can restore rapidly.

Description

technical field [0001] The invention relates to a device for supporting a headrest in a vehicle seat, in particular to an active headrest device for an automobile seat. Background technique [0002] When the vehicle seat is used for the driver and passengers, the top of the headrest structure is usually provided with a headrest structure. Through the setting of the headrest structure, the headrest can be moved forward and upward when the vehicle rear collision occurs, so as to protect the neck of the driver and passengers. The upper part provides a supporting force, thereby effectively protecting the occupant's neck. Among the existing vehicle headrest structures, some adopt an active headrest structure, and the active headrest is divided into two types: a point explosion type and a mechanical type. Among them, in the mechanical active headrest, it mainly includes the backrest frame, and a trigger mechanism is rotatably connected to the backrest frame. The trigger mechanis...

AI Technical Summary

Problems solved by technology

With the adoption of this structure, when the vehicle collides rearward, the driver and passengers exert more force in the horizontal direction on the trigger mechanism, so that the trigger mechanism needs a large force to rotate, and then the response of the mechanism is not sensitive enough, and it cannot effectively control the trigger mechanism. protect the neck

There is also a chute structure, that is, the trigger mechanism can slide in the chute, and then reset the trigger mechanism after the impact through a return spring, but due to the connection between the return spring and the trigger mechanism, the movement direction of the trigger mechanism is not the same as the reset The elastic direction of the spring is set at an angle, so that the trigger mechanism hardly moves and rotates. Due to the large force required, the angle of rotation is small, and it is difficult to trigger, and the trigger mechanism is not easy to reset.

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