CABLE-OPERATED RETRACTABLE SPRING PIN ASSEMBLY
A unified spring pin assembly provides remote actuation of a spring pin by pulling a cable. The assembly includes a retainer with an apertured cap at the top which is attached by clinch deformation. Clinch means also joins a retainer of the spring pin sub-assembly to a sheet. A spring operates between the inside surface of the cap and the pin. The pin includes a bore which extends through its entire length to provide a passage for the cable which includes a ball end that pushes against the end of the pin when the cable is pulled.
1 . A cable-operated retractable spring pin assembly, comprising:
a retainer having a barrel portion with a mouth at the top and fastening means at the bottom, said retainer further including a through-bore;
a pin in sliding engagement within said retainer barrel through-bore, said pin including a step on its exterior surface and a passage through the center of the pin extending the entire length thereof wherein said pin is selectively movable between retracted and extended positions;
a narrowed portion of the retainer through-bore having an internal stop that abuts the step of the pin when the pin is in the extended position;
an apertured cap affixed to the top of the retainer which captivates the pin within the retainer and provides for passage of a cable from the retainer through an aperture in the cap; and
a compression spring operatively positioned between an inside surface of the cap and the pin.
2 . The device of claim 1 further including a cable having an enlarged portion at a distal end thereof, the cable extending through the passage in said pin, and the through-bore of the retainer.
3 . The device of claim 2 wherein said pin includes an open mouth at the bottom including a recess for receiving the enlarged portion of the cable.
4 . The device of claim 3 wherein said retainer through-bore includes an inner wall closely dimensioned to the outside diameter of the pin.
5 . The device of claim 4 wherein said pin includes a counterbore which receives a portion of said spring.
6 . The device of claim 5 wherein said end of said cable is in abutment with a downward-facing step in the passage of the pin at the bottom end.
7 . The device of claim 6 wherein the enlarged portion at the end of said cable is substantially spherical.
8 . The device of claim 1 wherein said retainer fastening means is clinch means.
9 . The device of claim 1 wherein the apertured cap is clinched into the top of the retainer.
10 . The device of claim 9 wherein the cap is in flush attachment with a top surface of the retainer.
11 . The device of claim 2 wherein said spring is a coil spring that surrounds a portion of said cable within said retainer.
12 . The device of claim 1 wherein the top of the pin is in abutment with the inside surface of the cap when the pin is in the retracted position.