A protective helmet with a mechanical code for a splicing connection between an inner lining and a bearing structure

The invention relates to a safety helmet (100) which includes an arched helmet shell (1), a bearing structure (3, 4.l, 4.r, 5, 6, 8, 10), an inner lining and a plurality of connection units. The inner lining comes into contact with the head of a user of the protective helmet. The bearing structure (3, 4.l, 4.r, 5, 6, 8, 10) is attached on the inside to the helmet shell. Each connection unit is capable of detachably connecting the inner lining to the bearing structure(3, 4.l, 4.r, 5, 6, 8, 10). Each connection unit comprises a bearing structure-side component and an inner lining-side component. Each component is configured as exactly one connection type. A bearing structure-side component is connectable to an inner lining-side component if the two components are configured as the same connection type. The two components cannot otherwise be connected to one another or are incapable of establishing a connection between the bearing structure and the inner lining. 本发明涉及一种保护头盔（100），所述保护头盔具有拱曲的头盔壳（1）、承载结构（3、4.l、4.r、