Seat headrest capable of lowering injury to necks in rear-end collisions

Abstract

The invention discloses a seat headrest capable of lowering injury to necks in rear-end collisions. The seat headrest comprises an air cylinder, a control module and a frame body. The frame body is fixed in the headrest. The output end of the air cylinder is connected to one end of a regulating rod, the other end of the regulating rod is connected with a head plate, and the regulating rod is installed on the end of the air cylinder. The regulating rod is provided with a coaxial fixing block. Two connecting rods B are symmetrically arranged on the end surface of the side, opposite to the head plate, of the fixing block along the axis of the regulating rod, the free ends of the connecting rods B are hinged to one ends of connecting rods A and one ends of connecting rods C, the other ends of the connecting rods A are hinged to the bottom of the head plate, and the other ends of the connecting rods C are hinged to the side wall of the frame body. When the distance between a vehicle and another vehicle behind the vehicle is within a safety value range, the control module directly controls the air cylinder to retract, the regulating rod drives the head plate to move backwards, and therefore the heads of passengers and the supporting part of the headrest can be reset, manual operation is not needed, protection synchronization of the headrest and a vehicle safety system is achieved, and the reliability factor of the driving safety of the vehicles is increased.

Description

technical field [0001] The invention relates to an intelligent automobile active safety system, in particular to a seat headrest capable of reducing neck injuries in rear-end collisions. Background technique [0002] The forms of traffic accidents are divided into frontal collision, side collision, rear-end collision and pedestrian collision. Among them, rear-end collisions have a high probability of occurrence due to their unpredictability. Therefore, in the study of automobile safety, when planning the protection strategy for the occupants of the vehicle, the rear-end collision in the above-mentioned form, although the fatal injury to the occupants and the serious deformation of the vehicle body are relatively small, it will still cause serious damage to the occupants of the front vehicle. Whiplash to the neck. [0003] In the prior art, the neck protection is mainly based on the seat system. The protection principle is to limit the backward movement of the head relative...

AI Technical Summary

Problems solved by technology

Common active headrests on the market are generally of purely mechanical structure, and there are two main types. One is to rely on the relative movement of the occupant and the seat to push the link mechanism connected with the headrest, and then push the headrest close to the occupant's head, such as SAAB Active headrest, during the collision process, the occupant presses the seat backward due to inertia, and activates the headrest through the space linkage mechanism. The response time of the pillow mechanism is long, that is, the whiplash injury has occurred before the headrest takes effect; the second is that the headrest is triggered by the collision energy, which is dri

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