US 12,448,995 B2
Screw fixing structure for heat dissipation unit and heat dissipation unit using same
Wen-Ji Lan, New Taipei (TW)
Assigned to ASIA VITAL COMPONENTS CO., LTD., New Taipei (TW)
Filed by ASIA VITAL COMPONENTS CO., LTD., New Taipei (TW)
Filed on May 29, 2023, as Appl. No. 18/202,955.
Prior Publication US 2024/0401632 A1, Dec. 5, 2024
Int. Cl. H01L 23/40 (2006.01); F16B 39/10 (2006.01); H05K 7/20 (2006.01); F16B 21/18 (2006.01); F16B 41/00 (2006.01)
CPC F16B 39/10 (2013.01) [H05K 7/2039 (2013.01); F16B 21/186 (2013.01); F16B 41/002 (2013.01); F16F 2226/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A screw fixing structure for heat dissipation unit, comprising:
a locating screw including a shank having a head and an externally threaded section formed on an upper and a lower end thereof, respectively; the shank further including an annular retaining groove provided near the threaded section for receiving a retaining ring therein; and a spring being fitted on around the shank and having a top end and a bottom end, and the bottom end of the spring being elastically pressed against the retaining ring;
a hollow sleeve having an open upper end, an open lower end, and a receiving space defined in the hollow sleeve between the upper and the lower end; the hollow sleeve further having a radially inward narrowed neck portion formed near the upper end; the neck portion having a pair of cuts correspondingly formed thereat, and the cuts being radially communicable with the receiving space; and the shank of the locating screw having the spring fitted around it, the locating screw with the spring together being axially extended through the hollow sleeve; and
a spring stopper being elastically tightly set in the pair of cuts on the hollow sleeve and including a first and a second elastic arm, which are correspondingly shaped; the first elastic arm and the second elastic arm respectively having an end connected to one of two ends of a link section located between them and being pressed into the receiving space of the hollow sleeve via the pair of cuts to thereby restrain the top end of the spring.