Terminal pin holding block

Claim 1

A terminal pin holding block for providing an electrical connection between apparatus when coupled with another terminal pin holding block, comprising: a housing having a through passage bounded by a wall; a resilient tang extending from a portion of said wall to form a catch portion at its free end; a terminal pin formed with a recess which is adapted to receive therein said catch portion to hold said terminal pin against a first axial movement thereof with respect to said housing upon insertion of said pin in said passage; means for holding said pin against a second axial movement of the same upon insertion of said pin in said passage, said second axial movement being opposite to said first axial movement; said catch portion of said resilient tang including first and second projecting sections which are separated by a recessed portion, said first projecting section extending toward said recess of said terminal pin and engageable with the same, and said second projecting section extending substantially parallel with the axis of said pin supporting an outer surface of said pin with a flat surface thereof when said pin is depressed toward said second projecting section; and a predetermined amount of gap being formed between said flat surface of said second projecting section and said outer surface of said pin upon holding engagement of said catch portion with said recess for thereby allowing said pin to swing by a predetermined amount in said passage, the assembling of said pin with said housing being such that said pin is permitted to play swingably by a predetermined amount in said passage even when said pin is held against said first and second axial movement.