Cooling device for add-on card

Abstract

A cooling device for cooling an add-on card includes a heat absorption member attached to the add-on card to absorb heat therefrom, a heat sink and a clip for clasping the heat sink onto the heat absorption member. The heat sink includes a supporting plate, and a first plate and a second plate respectively extending from opposite sides of the supporting plate and attached to the heat absorption member tightly. The clip includes an operation board, and an engaging board and a supporting board respectively extending from opposite sides of the supporting plate. The engaging board and the supporting board respectively abut the first plate and the second plate of the heat sink. A tongue extends from the engaging board rearwards and downwards toward the operation board. The tongue is provided for blocking a separation of the clip from the heat sink.

1 . A cooling device adapted for cooling an add-on card, comprising:
 a heat sink comprising a supporting plate, and a first plate and a second plate respectively extending from opposite sides of the supporting plate, a chamber being defined between the first plate and the second plate adapted for receiving the add-on card; and   a clip spanning across the heat sink, comprising an operation board, and an engaging board and a supporting board respectively extending from opposite sides of the supporting plate, the operation board abutting the supporting plate, the engaging board and the supporting board respectively abutting the first plate and the second plate of the heat sink, a tongue extending from the engaging board into the chamber of the heat sink for preventing the heat sink from escaping from the clip.   
     
     
         2 . The cooling device of  claim 1 , wherein the engaging board comprises a first portion slants from the operation board towards the supporting board, and a second portion slants from the first portion towards the supporting board, a slope of the second portion being larger than that of the first portion. 
     
     
         3 . The cooling device of  claim 2 , wherein the tongue extends from a junction of the first portion and the second portion of the engaging board towards the operation portion, and an aperture is defined in the first portion of the engaging board corresponding to the tongue. 
     
     
         4 . The cooling device of  claim 3 , wherein the first plate of the heat sink comprises a left board, a right board and a bridge between the left board and the right board, an opening being defined between the left board and the right board and in front of the bridge, the tongue of the clip extending into the chamber via the opening. 
     
     
         5 . The cooling device of  claim 4 , wherein a distance between the operation board and the aperture of the engaging board substantially equals to a width of the bridge of the heat sink. 
     
     
         6 . The cooling device of  claim 5 , wherein the bridge is lower than the left board and the right board, a top surface of the bridge being substantially coplanar with a bottom surface of each of the left board and the right board. 
     
     
         7 . The cooling device of  claim 6 , wherein the chamber has a maximum height at the operation board, which is substantially equal to a height of the heat sink at the bridge. 
     
     
         8 . The cooling device of  claim 4 , wherein the left board and the right board of the first plate slant from the supporting plate towards the second plate. 
     
     
         9 . The cooling device of  claim 1 , wherein a pair of ears extend from lateral edges of the second plate towards the first plate for limiting the add-on card therebetween. 
     
     
         10 . The cooling device of  claim 1 , wherein a pair of blocking tabs extend from the second plate toward the first plate and are located at a position adjacent to the supporting plate. 
     
     
         11 . The cooling device of  claim 1 , wherein the cooling device further comprises a pair of conductive plates adapted for being respectively attached to opposite sides of the add-on card and a pair of clasps for clasping the conductive plates to the add-on card, the first plate and the second plate of the heat sink being attached to the conductive plates tightly. 
     
     
         12 . The cooling device of  claim 1 , wherein one of the conductive plates forms a pair of slots at opposite sides thereof, and the other one of the conductive plates forms a pair of latches engaging into the slots. 
     
     
         13 . A cooling device for cooling an add-on card, comprising:
 a heat absorption member adapted for attaching to the add-on card to absorb heat therefrom;   a heat sink comprising a supporting plate, and a first plate and a second plate respectively extending from opposite sides of the supporting plate and attached the heat absorption member tightly; and   a clip for clasping the heat sink onto the heat absorption member, comprising an operation board, and an engaging board and a supporting board respectively extending from opposite sides of the supporting plate, the engaging board and the supporting board respectively abutting the first plate and the second plate of the heat sink, a tongue extending from the engaging board downwardly and rearwards towards the operation board, the tongue engaging with the first plate of the heat sink when the clip is brought to move in a direction separating from the heat sink.   
     
     
         14 . The cooling device of  claim 13 , wherein the engaging board comprises a first portion slants from the operation board towards the supporting board, and a second portion slants from the first portion towards the supporting board, a slope of the second portion being larger than that of the first portion, the tongue extending from a junction of the first portion and the second portion to the heat absorption member, an aperture being defined in the first portion corresponding to the tongue. 
     
     
         15 . The cooling device of  claim 14 , wherein the first plate of the heat sink comprises a left board, a right board and a bridge between the left board and the right board, an opening being defined between the left board and the right board and in front of the bridge, the tongue of the clip being located in the opening. 
     
     
         16 . The cooling device of  claim 15 , wherein the left board and the right board of the first plate slant from the supporting plate towards the second plate, a height of a chamber defined by the clip at a position adjacent to the operation board being substantially equal to a height of the heat sink at the bridge.