US 12,449,864 B2
Two-stage fixing device
Ying-Chih Tseng, New Taipei (TW); Ming-De Wu, New Taipei (TW); and Ching-Kai Chang, New Taipei (TW)
Assigned to HANWIT PRECISION INDUSTRIES LTD., New Taipei (TW)
Filed by HANWIT PRECISION INDUSTRIES LTD., New Taipei (TW)
Filed on Jul. 11, 2023, as Appl. No. 18/350,210.
Prior Publication US 2025/0021140 A1, Jan. 16, 2025
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 1/18 (2006.01); H05K 7/14 (2006.01)
CPC G06F 1/185 (2013.01) [H05K 7/1417 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A two-stage fixing device, comprising:
a seat body comprising a bottom plate having a positioning portion at a front end thereof being positioned on a preset circuit board, two side plates respectively extending upwards from two outer walls on both sides of an opposite rear end of said bottom plate, a resisting plate connected between said two side plates, an elastic member mounting space surrounded by said two side plates and said resisting plate, and a mounting structure located on an inner surface of each of said two side plates; and
a positioning fastener comprising a base, a buckle member, a first elastic member and a second elastic member, said base comprising a containing groove, two combining structures for assembling with said two mounting structures of said seat body, a stop wall formed on a rear side of said containing groove, a first positioning body formed above a buckle groove and a positioning unit located on a bottom side of said base for positioning between said two side plates of said seat body, said positioning unit comprising a protruding portion located at a front end thereof, a resisting groove defined above said protruding portion and a second positioning body located in said resisting groove, said first elastic member being arranged at a rear side of said base with one end thereof held against said resisting plate of said seat body, said buckle member comprising a horizontal portion, a thrust portion at a front end of said horizontal portion, an operating portion at an opposing rear end of said horizontal portion, a vertical portion extending downward from a bottom side of said thrust portion and inserted in said containing groove of said base and an adapter plate connected to said vertical portion, said second elastic member being set in said containing groove and having two opposite abutting ends respectively supported against an inner surface of said vertical portion and said stop wall; and
wherein by pressing said operating portion of said positioning fastener and pulling said operating portion of said positioning fastener backward, said first elastic member is pushed to form elastic deformation and said positioning fastener is moved for a distance to drive a preset first interface card and a preset second interface card on said preset circuit board to position or release the position on said positioning fastener.