An active safety headrest device

Abstract

The invention discloses an active safe headrest device and relates to a structural design of a headrest of a seat system. The active safe headrest device is used for protecting the necks of passengers under the condition of rear-end collision. The active safe headrest device comprises a control module, a trigger mechanism, a connecting rod mechanism and a limiting mechanism, wherein the control module is connected with the trigger mechanism through a circuit to control the working state of the trigger mechanism, the connecting mechanism controls the motion of the headrest after being triggered, and the limiting mechanism supplies power and extreme motion position restraint to the connecting rod mechanism. The control module comprises an acceleration sensor, a contacting switch and a micro controller unit, wherein the acceleration sensor can monitor the acceleration of a car in real time and judge whether the rear-end collision happens or not, and the contacting switch can ensure that the headrest can not be unfolded when the head contacts with the headrest. The trigger mechanism comprises a locking rod, a lock tongue, an electromagnet and an electromagnet traction head. Accurate and timely triggering of the active safe headrest device can be guaranteed by means of judging of an electronic control unit (ECU) and triggering of the electromagnet, and refolding of the headrest can be easily achieved after the neck is protected.

Description

technical field [0001] The invention mainly relates to the technical field of automobile safety, in particular to a structural design of a headrest of a seat system, which is used for neck protection of occupants in rear-end collisions. Background technique [0002] The car seat headrest is a device arranged in order to improve the comfort of the occupant and ensure the safety of the occupant when riding. In addition to adding comfort to the occupants, the main function of the car seat headrest is to provide the occupants with a head support and a rearward limit protection function. [0003] Traffic accident statistics show that rear-end collisions are a common accident, and the injuries suffered by the front vehicle occupants during rear-end collisions are mainly whiplash injuries to the neck. Although this kind of injury is not as fatal as head and chest injuries, it is difficult to completely heal, and it is easy to cause serious sequelae. The injured will suffer long-te...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an active safety headrest device, which can cooperate with the control switch according to the instantaneous acceleration after the rear-end collision, and overcome the shortcomings of the existing active safety headrest device such as complex mechanism, untimely response, and easy accidental touch.

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