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1.要求头盔内侧必须有防冲击衬垫,一旦险遭意外时,起到缓冲作用。与头部吻合的表面衬垫材料为稀网眼衬布,应具有吸汗和吸收头部油脂的作用。 2.要求颚带柔软,子母扣及其他坚硬突出物不应超出头盔体外表面5毫米。 3.要求头盔带受到冲击时不致脱落,如与耳罩成为一体时,应不能影响听觉。 4.要求与头部吻合时应有轻盈、舒适的感觉,头盔重量不宜超过2公斤。 5.要求头盔不闭塞、不闷气、视野开阔清晰,无遮蔽,静止状态下视野角度不小于105度。
1. Requirements inside the helmet must have anti-impact liner, once the risk of accident, play a buffer role. The surface liner material that fits the head is a thin mesh lining that should absorb and absorb the head grease. 2. Requires soft jaws, snap clasps and other hard protrusions should not exceed the outer surface of the helmet 5 mm. 3. Requires the helmet with the impact will not fall off, as with the earmuffs into one, it should not affect the hearing. 4. Requirements should be consistent with the head light, comfortable feeling, the weight of the helmet should not exceed 2 kg. 5. Requirements helmet is not occluded, not stuffy, vision clear and open, no shelter, static state viewing angle of not less than 105 degrees.