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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 effects of good protection and large head damping.

Active Publication Date: 2010-10-27
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
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Effect test

Embodiment Construction

[0098] figure 1 The physical basis of the thought process is illustrated with reference to the diagram of the 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 fo...

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Abstract

The invention relates to a headrest (10) for a vehicle seat, in particular for a backrest of a motor vehicle seat, said headrest essentially comprising a headrest frame or headrest casing (14) and a foam base body (36) that surrounds the headrest frame or casing (14). In the event of a rear impact on the motor vehicle, the headrest remains fixed in relation to the backrest (conventional headrest)or at least part of the headrest is immediately displaced towards the vehicle occupant (active headrest). According to the invention, the head of a vehicle occupant can be brought into contact with the headrest (10) at least at two different heights (k1z, k2z), (two-point contact), to reduce or neutralise a torque (My) about a y-axis (y-y) in the vicinity of the vertebral column and to prevent accident-related injuries to the seat occupant, in particular to prevent cervical spine syndrome or a whiplash injury in the event of a front and / or rear impact. A head centre of gravity (HCG) is also configured between the 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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Patent Type & Authority Patents(China)
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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