Contact pin and spring contact including the same
View Patent ↗Provided are a contact pin, for a spring contact, the strength of which is guaranteed when a spring contact is manufactured in various lengths and which contributes to saving costs and time required to manufacture a test socket, and a spring contact including the same. The contact pin includes a body part of a certain width and thickness, a contact part provided on one end of the body part to be in contact with an object to be inspected, a shoulder part protruding in a width direction of the body part, a leg part extending in a longitudinal direction of the body part to face the contact part, and a guide part formed in the longitudinal direction of the body part to guide a vertical movement of another contact pin when coupled to the other contact pin.
1 . A contact pin for a spring contact, comprising:
a body part forming a predetermined width and thickness;
a contact part provided on one end of the body part to be in contact with an object to be inspected;
a shoulder part protruding in a width direction of the body part;
a leg part extending in a longitudinal direction of the body part to face the contact part; and
a guide part formed in the longitudinal direction of the body part to guide a vertical movement of another contact pin when coupled to the other contact pin,
wherein the shoulder part comprises:
first shoulders configured to assist an alignment of the contact pin during manufacture of the spring contact; and
second shoulders configured to support elasticity of a spring, the second shoulders being independently provided from the first shoulders at positions spaced a certain distance therefrom and away from the contact part;
wherein the first shoulders are provided at positions spaced a certain distance from the contact part in the longitudinal direction of the body part, and both the first shoulders and the second shoulders protrude from symmetrical positions on both ends of the body part,
wherein a width of the first shoulders is greater than or equal to a width of the second shoulders,
wherein the leg part comprises a pair of symmetric leg parts, and a pair of stopper members protruding from opposite ends of the leg part,
wherein the guide part comprises a stopping groove into which a stopper member of another contact pin is inserted when the spring contact is compressed,
wherein the stopper member comprises:
a first surface in surface contact with a step of the stopping groove; and
a second surface inclined at a certain slope on one end of the first surface toward an end of the stopper member, and
wherein the second surface is inclined at the slope in a direction in which a width of the stopper member decreases.
2 . The contact pin of claim 1 , wherein a width of the second shoulders is less than an outer diameter of the spring.
3 . The contact pin of claim 1 , wherein the contact part is formed on one end of the body part to decrease at least one of the width or thickness of the body part.
4 . The contact pin of claim 1 , wherein a shortest distance between the pair of stopper members is less than the thickness of the body part.
5 . The contact pin of claim 1 , wherein a shortest distance between the pair of stopper members is greater than or equal to a thickness of the guide part.
6 . The contact pin of claim 1 , wherein the stopping groove is formed in one end of the guide part.
7 . A spring contact comprising the contact pin of claim 1 as a pair of first and second contact pins, the spring contact comprising a spring supported by a shoulder part of the first contact pin and a shoulder part of the second contact pin.
8 . The spring contact of claim 7 , wherein a leg part of the first contact pin and a leg part of the second contact pin cross each other in a vertical direction.
9 . The spring contact of claim 8 , wherein the first contact pin and the second contact pin are the same in length.
10 . The spring contact of claim 8 , wherein the first contact pin and the second contact pin are different from each other in length.
11 . The spring contact of claim 8 , wherein a contact part of the first contact pin and a contact part of the second contact pin are different from each other in shape.
12 . The spring contact of claim 11 , wherein at least one of the contact part of the first contact pin or the contact part of the second contact pin forms two or more contacts with an object to be inspected.