Lock pin for mounting board-mount type connector on board

A lock pin for mounting a board-mount type connector on a board, wherein the board-mount type connector includes one member having an upper surface and a lower surface and a lock pin mounting opening passing through from the upper surface to the lower surface, the one member further having shoulders formed at the periphery of the lock pin mounting opening and below the upper surface, the board having a lock pin inserting opening formed therein correspondingly to the lock pin mounting opening of one member, the lock pin comprising:

• an unitary piece of elastic material, said elastic material having an upper lateral arm, a pair of spaced long central legs respectively extending downwardly from the center of said upper lateral arm, and a pair of spaced short outside legs respectively extending downwardly from the upper lateral arm along the outside of said central legs, said central legs being respectively formed at the roots thereof with shoulders to be engaged with the periphery of the lock pin mounting opening at the upper surface of the one member and at the lower ends thereof with side projections to be engaged with the periphery of said lock pin inserting opening of the board, said outside legs being respectively formed at the lower ends thereof with side projections extending therefrom for engaging a lower surface of said shoulders of the one member, whereby said lock pin can be held fixedly with the one member with the central legs being projected from the lower surface side of the one member over a considerable length by inserting the lower ends of said central legs into said lock pin mounting opening from the upper surface side of the one member so that said shoulders at the roots of said central legs are respectively engaged with the upper surface of the one member and said side projections of said outside legs are respectively engaged with said shoulders of the one member, and then the lower ends of said central legs thus projected are adapted to be inserted into said lock pin inserting opening of the board.