Pre -buried screw of helmet of riding

The utility model provides a pre -buried screw of helmet of riding, pre -buried screw of helmet of riding includes the nut body, and the inboard of nut body is provided with and is used for the fixed knot of fixation nut body on the helmet to construct, fixed knot constructs for 0.6 - 0.8cm's of thickness round disk, the edge that fixed knot constructs is provided with the fixed breach of a plurality of, and the outside of nut body is provided with the swing pinion that is used for rear -view mirror mechanism to rotate with fastening, and the nut body constructs for integrated into one piece's almag casting part with fixed knot. The utility model discloses simple structure can put into production when riding the helmet pre -buriedly in the helmet. 本实用新型提供了种骑行头盔预埋螺丝，所述骑行头盔预埋螺丝包括螺母本体，螺母本体的内侧设置有用于固定螺母本体于头盔上的固定结构，所述固定结构为厚度0.6-0.8cm的圆盘件，所述固定结构的边缘设置有若干个固定缺口，螺母本体的外侧设置有用于后视镜机构可紧固地旋转的旋转齿轮，螺母本体与固定结构为体成型的铝镁合金浇铸件。本实用新型结构简单，可以在生产骑行头盔时预埋于头盔里。