COMPONENT STRUCTURAL ELEMENT Russian patent published in 2021 - IPC A63H33/08 

FIELD: mechanical engineering.

SUBSTANCE: disclosed is a composite structural element containing at least two detachable joined together connection parts (1), one of which has a connecting groove (12), and the other has a connecting pin (11) inserted into the connecting groove (12); the connecting pin (11) has an axially elongated inner hole (110). The composite structural element also includes a tongue insert (131) having a tongue (1311) and a recessed insert (132) having a sleeve (1321), the sleeve (1321) forms a connecting recess (130). In one of the holes - the inner hole (110) in the connecting pin (11) or the connecting groove (12) - the insert element with the tongue (131) is tightly inserted, the insert element with the recess (132) is tightly inserted in the other of the holes; when two joint pieces (1) are joined together by inserting the connecting pin (11) into the connecting groove (12), the spike (1311) is fitted with an interference fit into the connecting recess (130), as a result of which the two joint parts (1) are firmly connected together.

EFFECT: invention performs its functions effectively.

71 cl, 41 dwg