Heat dissipation device and clip assembly thereof

Abstract

A heat dissipation device includes a heat sink, a positioning member and a wire clip. The heat sink includes a base and a plurality of fins. Two of the fins each form a hook. The positioning member includes a seat and two positioning arms each forming two opposite fingers. A receiving groove is defined under the seat, and a positioning slot is defined through a central portion of the seat. The seat is laterally sandwiched between the two fins and vertically sandwiched between the base and the hooks. Each of the two fins is sandwiched between the two fingers. The wire clip includes a resisting portion forming a protrusion and two clipping arms. The resisting portion rests on the base and is received in the receiving groove. The protrusion is received in the positioning slot.

1 . A heat dissipation device comprising:
 a heat sink comprising a base and a plurality of fins extending from the base, two fins of the plurality of fins each forming a hook;   a positioning member comprising a seat and two positioning arms extending outwardly and upwardly from two opposite lateral sides of the seat, respectively, each of the two positioning arms forming two opposite fingers, a receiving groove being defined under the seat, a positioning slot being defined through a central portion of the seat, the seat being laterally sandwiched between the two fins and vertically sandwiched between the base and the hooks of the two fins, each of the two fins being sandwiched between the two fingers of a corresponding positioning arm; and   a wire clip comprising a resisting portion and two clipping arms extending from two opposite ends of the resisting portion, the resisting portion forming a protrusion, the resisting portion resting on the base and being received in the receiving groove of the seat, the protrusion being received in the positioning slot.   
     
     
         2 . The heat dissipation device as claimed in  claim 1 , wherein the positioning member is W-shaped. 
     
     
         3 . The heat dissipation device as claimed in  claim 1 , wherein the two fins defines a channel therebetween, the positioning member is received in the channel, and two C-shaped tabs are formed at two sides of the positioning slot for abutting on the resisting portion of the wire clip. 
     
     
         4 . The heat dissipation device as claimed in  claim 3 , wherein the resisting portion of the wire clip extends through the channel. 
     
     
         5 . The heat dissipation device as claimed in  claim 1 , wherein the wire clip is Z-shaped, and the two clipping arms are perpendicular to the resisting portion and extend from two opposite ends of the resisting portion in opposing directions. 
     
     
         6 . The heat dissipation device as claimed in  claim 1 , wherein each of the two clipping arms forms a catch at a free end thereof. 
     
     
         7 . The heat dissipation device as claimed in  claim 1 , wherein the hook comprises a guiding surface and a step, the guiding surface extending downwardly and inwardly from a corresponding one of the two fins, and the step being disposed at a bottom side of the hook. 
     
     
         8 . A clip assembly comprising:
 a positioning member comprising a seat and two positioning arms, the two positioning arms extending outwardly and upwardly from two opposite lateral sides of the seat, respectively, each of the two positioning arms forming two opposite fingers, a receiving groove being defined under the seat, a positioning slot being defined through a central portion of the seat; and   a wire clip comprising a resisting portion and two clipping arms extending from two opposite ends of the resisting portion, the resisting portion forming a protrusion, the resisting portion being received in the receiving groove of the seat, the protrusion being received in the positioning slot.   
     
     
         9 . The clip assembly as claimed in  claim 8 , wherein the positioning member is W-shaped. 
     
     
         10 . The clip assembly as claimed in  claim 8 , wherein the wire clip is Z-shaped, and the two clipping arms are perpendicular to the resisting portion and extend from two opposite ends of the resisting portion in opposing directions. 
     
     
         11 . The clip assembly as claimed in  claim 8 , wherein each of the two clipping arms forms a catch at a free end thereof. 
     
     
         12 . The clip assembly as claimed in  claim 8 , wherein two C-shaped tabs are formed at two sides of the positioning slot for abutting on the resisting portion of the wire clip.