与耳朵齐平！
头枕高度合适才能更好起到保护效果
否则可能会适得其反
增加伤害性
许多车主喜欢将头枕作为颈枕来使用
将头枕降至最低
垫在颈部后方
靠上去觉得很舒服
但是，其实这样的做法非常危险！
过低的头枕垫在颈后，在遇到追尾事故时，巨大的冲击力会通过头枕直接传递给颈部，而头部则因为惯性向后翻转，颈部会遭受非常严重的伤害，甚至可能出现折断颈椎这样的致命伤；如果头枕高于头部很多，在受到撞击时，头部很可能会被向下挤压，头部被压低，造成颈部严重伤害。另外，头部被下压时有可能还会撞到头枕的金属杆，造成更严重的伤害。
一般来说，头枕中央是最为柔软的，在遭遇外力冲击时，头部靠在头枕中央最为安全。所以，调节头枕正确的高度是，将头枕中央与耳朵上沿平行，这样就使头部中间对应头枕中央，在受到冲击时，头枕最柔软的部分会给予头部安全的保护。
今天的三秒知识点就是这样
咱们下期再见咯~
来源：山东高速交警
原创文章，作者：cesifu，如若转载，请注明出处：http://www.cesifu.com/article/14402.html
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