Protective liner structure of safety helmet

A protective liner structure of a safety helmet is arranged on the inner side of a helmet shell, the protective liner comprises a three-dimensional reinforcing framework and a foaming material which are integrally formed, the reinforcing framework comprises a plurality of three-dimensional structural units which are continuously connected, the foaming material is filled among the three-dimensionalstructural units, and the three-dimensional structural units are connected through the foaming material. Deformation spaces are formed in the vertical direction and the horizontal direction of the three-dimensional structure units connected with each other. The shock resistance and the puncture resistance of the safety helmet can be improved, the safety helmet can be made smaller under the condition that the same stipulated shock and puncture conditions are met, and the safety performance is higher. 一种安全帽的保护衬垫结构，设置在帽壳内侧，保护衬垫包括立体状的加强骨架与发泡材料一体成型，其中，加强骨架包括多个立体结构单元形成连续性连接，发泡材料填充在立体结构单元之间，相互连接的立体结构单元在垂直方向和水平方向上形成有形变空间。本实用