Headrest device for active headrest

Abstract

In a conventional active headrest device, in order to protect a head etc. at the time of collision, a headrest ascends, and an ascent stroke is secured. However, it was proven that this construction is a little unsatisfactory in terms of ascent speed or distance in following the movement of a head, etc. at the time of the collision. Further, it is considered that this ascent speed or distance incurs a risk of a second accident and causes a new problem. In light of the above circumstance, the active headrest of the invention includes individual means provided in a seat back. The individual means includes a lower unit which operates by an impact given to a frame, a wire which elevates / lowers inside the seat back linked to the lower unit, a solenoid to which the wire is locked and / or an upper unit having the solenoid, and a headrest device linked to a lifter or a connecting portion of the upper unit. At the time of collision, the wire is tensioned downward, the lifter or connecting portion of the upper unit ascends or tilt forward, and the ascent and forward tilting of the headrest are performed instantaneously. As a result, this headrest can secure the ascent stroke and forward tilting which can follow the movement of a head, etc. at the time of collision, and can protect a head, etc.

Description

technical field [0001] The present invention relates to a headrest device for an active headrest. The headrest device (active headrest) for protecting the human body in the event of an impact (collision) according to the present invention passes through the Protect the head before the head rises (neck elongation), and protect the head and neck by making the headrest move upward (rise) and tilt forward (forward) at high speed (and momentarily) , to avoid head shock, avoid injury to the neck, etc. Background technique [0002] As we all know, the qualitative improvement pursued by automobiles (vehicles) is to meet the various expectations of everyone such as passengers by sequentially achieving emission → power → fuel consumption → safety → quietness → improvement of ride comfort. Among them, improvement of the function of the headrest is eagerly desired from the importance of safety, etc., and examples include the practical use of active headrests and inventions that promote...

AI Technical Summary

Problems solved by technology

[0017] However, there is still no active head restraint that comprehensively protects the head movement in the event of a collision regardless of the occupant's body size or seating posture, and accurately responds to it.

In addition, the reality is that there are no inventions and / or products that utilize existing improved structures of various active headrests to ensure the safety and trust of occupants, or to achieve driving and driving comfort, etc.

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