Connecting structure of helmet

A connecting structure of a helmet, comprising a helmet body (1);

• a face guard (2) and a chin shield (3) are symmetrically hinged on both sides of the helmet body (1) by a face guard rotating component and a chin shield rotating component, respectively;
• mounting grooves (4) are symmetrically provided on both sides of the helmet body (1), characterized in that a face guard rotation limiting member (5) and a rotating component mounting plate (6) are mounted in the mounting groove (4);
• a face guard mounting member (7) in the face guard rotating component is mounted inside the rotating component mounting plate (6);
• the face guard (2) is connected to an end of a linkage guide ring member (8) via the face guard mounting member (7);
• the vicinity of the other end of the linkage guide ring member (8) is hinged to the rotating component mounting plate (6) via a first rotary shaft (9);
• a driving block (11) cooperating with the inner side of an annular groove (10) is provided in the annular groove (10) on the linkage guide ring member (8);
• the driving block (11) passes through the rotating component mounting plate (6) via a second rotary shaft (12) and is connected to a chin shield rotating component provided on the outer side of the rotating component mounting plate (6);
• the chin shield rotating component is connected to the rotating component mounting plate (6) and the chin shield (3), respectively;
• the rotating component mounting plate (6) is of a D-shaped shell structure;
• and a turnup is provided at a side of the D-shaped shell structure facing towards the mounting groove (4), wherein the turnup of the D-shaped shell structure on the side of the vertical straight side is a stepped turnup;
• a C-shaped guide groove (23) is provided on the rotating component mounting plate (6) with the D-shaped shell structure.