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Headrest for protecting against whiplash

A headrest and head technology, which is applied in the field of headrests for preventing whiplash-like damage, can solve the problems such as the elimination of the activated headrest system, and achieve the effect of good protection and large head damping.

Active Publication Date: 2008-06-18
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Expensive activated head restraint systems may be obsolete if the head restraints themselves already provide adequate protection

Method used

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  • Headrest for protecting against whiplash
  • Headrest for protecting against whiplash
  • Headrest for protecting against whiplash

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0098] Figure 1 illustrates the physical basis of the thought process with reference to a diagram of a passenger's head (100). A general definition for such theoretical studies includes the head center of gravity (HCG) which is the center of gravity of the head (100).

[0099] According to the established direction, that is, the direction of travel (x) and the vertical direction (z) of the vehicle, it can be determined that at acceleration a 碰撞 Mathematical force balance in the x- and z-directions on the HCG during a rear impact.

[0100] Force balance F in the x direction x By the inertial force F from the head (100) gx and the resultant force F1 transmitted from the head restraint (10) to the passenger's head (100) in the opposite direction kx The difference between composition.

[0101] f x =F gx -F1 kx (1)

[0102] Force balance F in the z direction z By the inertial force F of the head (100) gz and the resulting force F1 t...

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PUM

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Abstract

The invention relates to a headrest (10) for a vehicle seat, in particular for a vehicle seat back, said headrest essentially comprising a headrest frame or headrest box (14) and surrounding the headrest frame or headrest Foam matrix (36) of the box (14). In the event of a rear-end impact of the vehicle, the head restraint remains fixed relative to the backrest (conventional head restraint), or at least part of the head restraint is immediately moved toward the vehicle occupants (activated head restraint). According to the present invention, in order to reduce or offset the torque (My) of the cervical region about the y-axis (y-y) and prevent accidental injuries to seat passengers, in particular to prevent cervical syndrome and / or front and / or rear In case of whiplash-like injury at the moment of impact, the head of the vehicle passenger can contact the head restraint (10) at at least two different heights (k1z, k2z) (two-point support). The head center of gravity (HCG) is also formed between these two heights (k1z, k2z) of the headrest (10).

Description

technical field [0001] The invention relates to a head restraint for a vehicle seat, in particular a motor vehicle seat, having the features cited in the preambles of claims 1 and 12 . Background technique [0002] Conventional crash-activated head restraints are used to improve occupant safety in automotive accidents. Whereas conventional head restraints pose a high risk of injury even in rear impacts at low impact velocities, the use of crash-activated head restraints significantly reduces the risk of a serious cervical spine injury known as the "whiplash effect" , and more specifically, to reduce the risk of frequent whiplash trauma caused by overextension and overstress of the cervical spine and muscular support systems. [0003] Whiplash effects and associated spinal injuries in the cervical region are referred to as "whiplash injuries". [0004] Crash-activated head restraints are designed with a relatively large distance between the head and the head restraint under...

Claims

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Application Information

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IPC IPC(8): B60N2/48
CPCB60N2/4885B60N2/48B60N2/888B60N2/80
Inventor 阿明·梅克斯纳曼弗雷德·赫尔姆安德烈亚诺·霍夫迈斯特德克·费迪南彼得·施穆达·冯·特泽拜斯基霍斯特·拉黛梅切拉尔夫·路林
Owner VOLKSWAGEN AG
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