Induction seat headrest structure

Abstract

The invention discloses an induction seat headrest structure comprising a headrest fixing portion, a headrest moving portion, a headrest moving portion drive mechanism, a longitudinal movement triggering switch, a distance detection sensor and a control module. In the instant of the vehicle rear-end collision, a collision sensor of the vehicle outputs a collision signal to the control module, the control module transmits a measurement requiring signal to the distance detection sensor, and the distance detection sensor detects the space between a driver or passenger and the headrest moving portion and returns to the control module; the control module calculates the distance for the headrest moving portion moving forward as required according to the distance detection signal, the headrest moving portion drive mechanism drives the headrest moving portion to move forward by determined distance rapidly, the headrest moving portion moves in place before the head of the driver or passenger moves to the determined position, the support on the head of the driver or passenger is provided during the rear-end collision, and the damage on the neck of the driver or passenger is reduced.

Description

technical field [0001] The invention relates to the technical field of seats, in particular to an induction seat headrest structure. Background technique [0002] In order to reduce the probability of neck injury of passengers when the vehicle is rear-ended, the new car evaluation process in Europe and China has added the requirement of seat whiplash. In order to obtain high evaluations in these evaluation systems, various OEMs have made car seats one after another. Vendors made demands for high whiplash scores. Various designs to improve the performance of the seat whiplash have also emerged as the times require. [0003] According to the current theory of anti-whiplash design, it is necessary to reduce the distance between the dummy's head and the headrest to improve the anti-whiplash performance, but the gap between the head and the headrest is too small, which will lead to the discomfort of the head; In response to this situation, many seat suppliers have developed act...

AI Technical Summary

Problems solved by technology

[0003] According to the current theory of anti-whiplash design, it is necessary to reduce the distance between the dummy's head and the headrest to improve the anti-whiplash performance, but the gap between the head and the headrest is too small, which will lead to the discomfort of the head; In response to this situation, many seat suppliers have developed active headrest designs, that is, in the initial position, a large distance is maintained between the head and the headrest to ensure the comfort of the head. Through some mechanism devices, the headrest is pushed forward in a short time, reducing the distance between the head and the headrest, thereby improving the performance of anti-whiplash; although this design is popular, there are still some shortcomings, mainly

[0004] 1. The forward movement stroke of this headrest is fixed and cannot be adjusted;

[0005] 2. In the anti-whiplash test, the body shape and riding posture of the dummy remain the same, and the existing products are only designed according to the test requirements, and the test is carried out after ensuring that the distance between the head and the headrest meets the design requirements Yes, but in actual use, the occupant's body shape and riding posture are different, which will cause the distance between the occupant's head and the headrest to be different, and a large gap may cause whiplash prevention performance degradation;

[0006] In addition, there is no stepless front and rear adjustment headrest design in the current seat design

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