推荐回答(1个)
所有头盔的材质很重要,一般的材料都是一样的,注意头盔重量,太重了长时间脖子会不舒服,头盔的作用是保护头,所有它在收到强烈撞击下会碎的才是好的,不要听信有人说做不坏,踩不烂那种是好的,由于老化的原因,头盔的保质期一般也只有3年左右。还要注意头盔的大小,在店里买可以试一下,要是网上买就要量好自己头围,买的时候告诉卖家。很多人问:“骑行头盔买哪种好?”第一要先问卖的人这头盔会摔碎吗?他说会就别买了。类似强化玻璃,正经得头盔摔倒碰撞就会碎的,为了缓冲和保护头。第二看空气流通性第三能否调节大小适应自己的头很多人问:“骑行头盔上哪里买好?”网上一般选择品牌店,淘宝商城店铺,但网购有很多缺陷,买回来后不一定合适你。店面的话更要注重品牌店和性价比,一般100以下的要考虑质量问题,200以上的要考虑性价比问题,100-200为宜。自行车头盔对保护骑车人性命的功能是不容置疑的。据美国公路安全保险研究的报告表明:美国1999年骑自行车死亡的人数有98%未戴头盔,而在撞击事故中戴头盔的人使他们头部受重伤的危险系数减少了85%,另外带头盔不仅让人感到很酷,而且确实很爽。同时,头盔上的通气孔能 让头部感到更凉爽。用句老话说,清醒的头脑更易取得竞赛的胜利。头盔保护头部的原理是,戴头盔者能使被撞的头部相对缓慢地停止,而不戴头盔者若在地面撞击头部时,往往会使大脑水肿造成出血,而头盔中聚合的球状物却可吸收该撞击力,避免了这些不幸事件的发生。选择一个合适你的头盔,可以使你变得更帅,怎样才是适合的?带上去头盔的盔沿在你前额的眉心处,头盔不会在你的头上转圈,不会前后左右的晃动, 不会有夹紧的感觉,而是轻松自然的保护你的头部,透气性能自然也不能忽视,气孔越多,透气性能也会越好,但是要在保证安全的前提下,这不是定则,因为有的头盔虽然透气孔不多,但是气透气性能在设计上一样可以达到。头盔是保证人体安全的第一装备,所以正规厂家的头盔都会有相应的标准认证标识,例如:美国材料试验协会(ASTM)或Snell基金会,通常还会有一些国际、国家或地区权威认证机构的认证标识。选择一个轻量、坚固、透气的头盔是应该的,有硕大的透气孔,通风效果自然好,内有合金骨架,强度可靠,带COOLMAX内衬,佩戴舒适,有的头盔前部还有防虫网,是一个很体贴的设计。【质地】头盔一般使用发泡材料(普通或者高密度的,两者的区别在于其防撞效果)铸成,并有光滑的壳面;【重量】压在头上的东西可不能太重,这也是骑行头盔没有采用合金材料的原因;【内衬】就是头盔内侧与头部接触的部分,它可以在平时提升佩戴舒适感,在头部受到撞击时产生缓冲作用。做工精良的头盔其内衬覆盖面大,质地更好,和头盔内侧粘合得也更结实;【佩戴舒适性】主要是因为重量、内衬、系带以及头围是否合适带来的个人感觉,佩戴舒适的头盔可以极大地减少骑行者头部及颈项受到的压迫并在遭受撞击时最大限度地提升保护效果;【透气性】头部长期处于不透气状态会对头皮产生不良影响,也会让骑行者感觉不舒服。所以好的头盔或者是孔数比较多,或者是孔的面积比较大,这都是为了提升透气性;【风阻效果】头盔将人的头发收于盔内,本身就已减小了头部的风阻,而对于热衷于提升速度的朋友来说,头盔造型对风阻的影响也是值得关注的。【骑行头盔的种类】:半盔式骑行头盔分为公路专用(无帽檐)、公路山地两用(配可拆卸帽檐)等。也有朋友使用类似于棒球或轮滑用的头盔。
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