US 11,719,720 B2
Spring probe
Zhengpeng Wei, Shenzhen (CN)
Assigned to SHENZHEN POMAGTOR PRECISION ELECTRONICS CO., LTD, Shenzhen (CN)
Appl. No. 16/754,142
Filed by SHENZHEN POMAGTOR PRECISION ELECTRONICS CO., LTD, Shenzhen (CN)
PCT Filed Mar. 19, 2019, PCT No. PCT/CN2019/078765
§ 371(c)(1), (2) Date Apr. 7, 2020,
PCT Pub. No. WO2020/172927, PCT Pub. Date Sep. 3, 2020.
Claims priority of application No. 201910146345.0 (CN), filed on Feb. 27, 2019.
Prior Publication US 2021/0215741 A1, Jul. 15, 2021
Int. Cl. G01R 1/067 (2006.01); H01R 13/24 (2006.01)
CPC G01R 1/06722 (2013.01) [G01R 1/0675 (2013.01); H01R 13/2421 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A spring probe, characterized in that the spring probe comprises a hollow needle tube (1), a needle (2) with its tail end clamped in the needle tube (1) and can move axially along the needle tube (1), and a spring (3) arranged between the front end of the needle (2) and the inner bottom of the needle tube (1) and exerting a pushing force on the needle (2), wherein the open end (4) of the needle tube (1) is circumferentially provided with a plurality of elastic sheets (5) with elasticity, the inner sides of the elastic sheets (5) are provided with first flanges (7) for preventing the needle (2) from separating from the needle tube (1), the first flanges (7) are pressed against the outer wall of the needle (2) under the action of the elastic force generated by elastic deformation of the elastic sheets (5), the outer wall of the tail end of the needle (2) is provided with a second flange (8), and the second flange (8) can abut against the first flanges (7) under the action of the spring (3),
wherein the rear ends of the first flanges (7) have a first inclined plane (9) facing the inside of the needle tube (1), and the front end of the second flange (8) has a second inclined plane (10) facing the front end of the needle (2),
wherein the angle between the first inclined plane (9) and the central axis of the needle tube (1) is a and the range of a is 35° to 55°, and the angle between the second inclined plane (10) and the central axis of the needle (2) is β and the range of is 35° to 55°.