CN2717019Y

CN2717019Y - Heat sink assembly

Info

Publication number: CN2717019Y
Application number: CN 200420067352
Authority: CN
Inventors: 张�杰
Original assignee: Molex LLC
Current assignee: Molex LLC
Priority date: 2004-06-04
Filing date: 2004-06-04
Publication date: 2005-08-10
Anticipated expiration: 2014-06-04

Abstract

A heat sink assembly comprises a heat sink and two fixing devices, wherein both sides of the bottom surface of the heat sink are respectively provided with a fixing part; each fixing device comprises a fixing bottom plate and two locking devices, the fixing bottom plate comprises a body and two fixing arms bent and extended from two ends of the body, the body of the fixing bottom plate can be locked to the fixing part of the radiator by screws, the locking device comprises a bolt, an elastic piece and a stop ring which are arranged in the assembling hole in a penetrating way, the bolt comprises a screwing part positioned on one side of the fixed bottom plate, a groove and a locking part positioned on the other side of the fixed bottom plate, the elastic piece is sleeved on the bolt and limited between the screwing part and the fixed bottom plate, the stop ring is arranged in the groove of the bolt, the external thread on the bolt locking part is matched with a screw hole on a circuit board so as to lock the radiator on the circuit board and ensure that the bottom surface of the base of the radiator is elastically attached to the top surface of an electronic element.

Description

The heat abstractor combination

Technical field

The utility model is about the combination of a kind of heat abstractor, is meant especially a kind ofly radiator to be securely mounted to circuit board, need not to destroy the radiating fin and the versatility heat abstractor combination preferably of radiator.

Background technology

Along with integrated circuit develops towards densification, complicated direction, the heat that its electronic component produces also increases severely thereupon, can install a heat abstractor at the electronic component end face usually for this reason and assist heat radiation.

The locking method such as the United States Patent (USP) the 6th of radiator in the heat abstractor combination commonly used, 538, No. 889 and the 6th, 374, shown in No. 906, these two kinds of radiators all are that four jiaos at radiator base are respectively offered a pilot hole, and in this pilot hole installing one locked instrument, utilize this locked instrument this radiator to be locked to the locking hole of a circuit board again.Yet adopt this method will on radiator base, offer through hole, need to destroy the radiating fin around the radiator through hole, and can upset flowing of radiating airflow and cause radiating efficiency to descend.On the other hand, adopting this locking method also can run into the radiator fan of installing above the pedestal during radiator in locking disturbs and locked instrument is carried out the locking hole that the base shape of locking operation and radiator can't the corresponding circuits plate offers many puzzlements such as pilot hole.

This shows that still there is defective in actual use in existing heat abstractor combination, awaits improving.

The innovation and creation content

Therefore, main purpose of the present utility model is to provide the combination of a kind of heat abstractor, and it can be securely mounted to circuit board with radiator, and the radiating fin and the versatility that need not to destroy radiator are better.

For achieving the above object, the utility model adopts following technical scheme: a kind of be installed in a circuit board and with the heat abstractor combination that an electronic component amplexiforms, comprise a radiator and two fixtures.This radiator comprises a pedestal and the some radiating fins that gone out by this base extension, and these both sides, radiator base bottom surface respectively are provided with a fixed part, and each fixed part is provided with at least one screw; Each fixture comprises a fixed base plate and two locked instruments, this fixed base plate comprises a body and the two fixing arms that extended by this body two ends bending, screw corresponding to the radiator fixed part on this body is provided with two fixing holes, and pass this fixing hole and thereby screw lock is fixed to the radiator base bottom surface with this fixed base plate in the screw of this radiator by two-screw, this two fixing arms end is equipped with a pilot hole; This locked instrument comprises that one is located in the bolt in this fixed base plate pilot hole, one elastic component and a stop ring, this bolt comprises a stubborn solid portion that is positioned at fixed base plate one side and a groove and a locking part that is positioned at the fixed base plate opposite side, this elastic component is set on the bolt and spacing twisting between solid portion and the fixed base plate, the interior bolt that prevents is deviate from this pilot hole thereby this stop ring is attached to the groove of bolt, wherein the outer surface of this locking part is provided with external screw thread, thereby the external screw thread of this locking part can match with the screw on the circuit board this radiator is locked to this circuit board, and the base bottom surface of radiator and electronic component end face elasticity are amplexiformed.

Advantage of the present utility model is: only need to be drilled with four screws in the radiator base bottom surface, again two fixed base plates and locked instrument are fixed to the screw of radiator base bottom surface with screw, with this locked instrument radiator is locked on the circuit board again, not only fixing is firm for this locking mode, need not to destroy the radiating fin of radiator, and can be widely used in various forms of radiators, versatility is better.

Description of drawings

Fig. 1 is the three-dimensional exploded view of heat abstractor combination of the present utility model;

Fig. 2 is another three-dimensional exploded view of heat abstractor combination of the present utility model;

Fig. 3 is the three-dimensional exploded view of the fixture of heat abstractor combination of the present utility model;

Fig. 4 is the three-dimensional combination figure of heat abstractor combination of the present utility model.

Embodiment

Consult Fig. 1 to Fig. 4, the combination of the utility model heat abstractor can be attached to a circuit board 8 and amplexiform mutually with the end face of an electronic component 9, thereby guarantee its energy steady operation for this electronic component 9 provides heat radiation, it mainly comprises a radiator 1, two fixtures 2, a fan fixed frame 3 and a radiator fan 4.

This radiator 1 comprises a pedestal 11 and the some radiating fins 12 that extended by this pedestal 11, and the both sides, pedestal 11 bottom surface of this radiator 1 respectively are provided with a fixed part 111, and each fixed part 111 is provided with two screws 1111.This radiator 1 is square approximately, and its four jiaos respectively are provided with a breach 13.The top of the radiating fin 12 of these radiator 1 both sides also respectively is provided with two screws 121.

Each fixture 2 comprises a fixed base plate 21 and two locked instruments 22.This fixed base plate 21 is the C font approximately, and it comprises a body 211 and the two fixing arms 212 that extended by this body 211 two ends bending.Wherein the screw 1111 of corresponding radiator 1 pedestal 11 bottoms is provided with two fixing holes 2111 on this body 211, thereby passes the bottom surface that this fixing hole 2111 and screw lock are fixed to this fixed base plate 21 at the screw 1111 of this radiator 1 bottom radiator 1 pedestal 11 by means of a screw 5; These two fixings arm, 212 ends are equipped with a pilot hole 2121.Each locked instrument 22 comprises that one is located in bolt 221, an elastic component 222 and the stop ring 223 in these fixed base plate 21 pilot holes 2121.This bolt 221 comprises a stubborn solid portion 2211 that is positioned at fixed base plate 21 1 sides and a groove 2212 and a locking part 2213 that is positioned at fixed base plate 21 opposite sides.This elastic component 222 is helical springs, and it can penetrate cover via the locking part 2213 of this bolt 221 and be set to this bolt 221.This stop ring 223 is annular flakes, and its external diameter is more bigger than the internal diameter of the pilot hole 2121 of this fixed base plate 21, and these stop ring 223 central authorities are provided with a containing hole 2231, and its week is along then being provided with a breach 2232.This elastic component 222 is set on the bolt 221 and spacing twisting between solid portion 2211 and the fixed base plate 21, thereby makes this

fixed base plate

21 and 221 one-tenth one elasticity annexations of radiator 1 and this bolt; Thereby this stop ring 223 is cards to be set to prevent in the groove 2212 of this bolt 221 that these bolts 221 from deviating from the pilot hole 2121 of this fixed base plate 21.The outer surface of these bolt 221 locking parts 2213 is provided with the external screw thread that matches with the screw 81 of circuit board 8, thereby this fixture 2 and this radiator 1 one can be attached to circuit board 8, and make the bottom surface elasticity of the pedestal 11 of this radiator 1 amplexiform electronic component 9 end faces.

This fan fixed frame 3 is fixed on this radiator 1 top, and it respectively is provided with a screw 31 in the appropriate position of departing from four jiaos.Also each is bent to form a flanging 32 downwards in the both sides of this fan fixed frame 3, each flanging 32 is provided with two through hole 321, passes this through hole 321 and screw lock can be fixed to this radiator 1 with this fan fixed frame 3 in the screw 121 of radiator 1 both sides by means of screw 6.

This radiator fan 4 is aerofoil fans, and it can strengthen the radiating efficiency that air current flow improves radiator 1.Four jiaos of this radiator fan 4 respectively are provided with a locking hole 43, also in the screw 31 of screw lock on fan fixed frame 3 radiator fan 4 are locked to fan fixed frame 3 thereby pass this locking hole 43 by means of screw 7.

Present embodiment is to offer four screws 81 on this circuit board 8, thereby and with the external thread spiro fastening of these bolt 221 locking parts 2213 radiator 1 is attached to circuit board 8, and make the bottom surface elasticity of the pedestal 11 of this radiator 1 amplexiform electronic component 9 end faces; Certainly, because present heatsink mass constantly increases, the intensity of general circuit plate can't be born its bigger quality, so also can further install a backboard (scheming not shown) at these circuit board 8 back sides, and on this backboard, establish four screws (scheming not shown), and correspondence is offered four-way hole (scheming not shown) on circuit board 8, thereby make the locking part 2213 of bolt 221 can pass the through hole on this circuit board 8 and be screwed in the screw of backboard radiator 1 is fixed to circuit board 8.In addition, can also be drilled with internal thread (scheming not shown) in the bottom of the locking part 2213 of bolt 221, correspondence is offered four-way hole (scheming not shown) on this circuit board 8, and adopt four to have externally threaded set bolt (scheming not shown) and penetrate, thereby and be screwed with the internal thread of this bolt 221 radiator 1 is locked to circuit board 8 from the opposite side of this circuit board 8 through hole by circuit board 8.The combination of the utility model heat abstractor only needs to be drilled with four screws 1111 in radiator 1 pedestal 11 bottom surfaces, again two fixed base plates 21 and locked instrument 22 usefulness screws 5 are fixed to the screw 1111 of radiator 1 pedestal 11 bottom surfaces, with this locked instrument 22 radiator 1 is locked to circuit board 8 again, not only fixing is firm for this locking mode, need not to destroy the radiating fin 12 of radiator 1, and can be widely used in various forms of radiators, versatility is better.

But, above-described content only is a preferred implementation of the present utility model, certainly can not limit interest field of the present utility model with this, be that every simple equivalent of doing according to claim of the present utility model and description changes and modification, all should be still forgiven in interest field of the present utility model.

Claims

1, a kind of heat abstractor combination that is installed on the circuit board and amplexiforms with an electronic component, comprise a radiator and two fixtures, this radiator comprises a pedestal and the some radiating fins that gone out by this base extension, it is characterized in that: these both sides, radiator base bottom surface respectively are provided with a fixed part, and each fixed part is provided with at least one screw; Each fixture comprises a fixed base plate and two locked instruments, this fixed base plate comprises a body and the two fixing arms that extended by this body two ends bending, screw corresponding to the radiator fixed part on this body is provided with at least one fixing hole, and pass this fixing hole and thereby screw lock is fixed to the radiator base bottom surface with this fixed base plate in the screw of this radiator by a screw, this two fixing arms end is equipped with a pilot hole; This locked instrument comprises that one is located in the bolt in this fixed base plate pilot hole, one elastic component and a stop ring, this bolt comprises a stubborn solid portion that is positioned at fixed base plate one side and a groove and a locking part that is positioned at the fixed base plate opposite side, this elastic component is set on the bolt and spacing twisting between solid portion and the fixed base plate, the interior bolt that prevents is deviate from this pilot hole thereby this stop ring is attached to the groove of bolt, thereby match with another corresponding lock solid structure this radiator locked to this circuit board in the locking part of this bolt, and the base bottom surface of radiator and electronic component end face elasticity are amplexiformed.

2, heat abstractor combination as claimed in claim 1, it is characterized in that: this elastic component is a helical spring.

3, heat abstractor combination as claimed in claim 1, it is characterized in that: the outer surface of this bolt locking part is provided with external screw thread.

4, heat abstractor as claimed in claim 3 combination is characterized in that: this lock solid structure is to be opened on the circuit board four screws that the external screw thread with bolt is screwed.

5, heat abstractor combination as claimed in claim 3, it is characterized in that: this back of circuit board also is equiped with a backboard, this lock solid structure be opened on the backboard can with four screws of the external thread spiro fastening of this bolt, and on circuit board, also be provided with the four-way hole corresponding with this screw.

6, heat abstractor combination as claimed in claim 1, it is characterized in that: the bottom of this bolt locking part is drilled with internal thread.

7, heat abstractor combination as claimed in claim 6, it is characterized in that: this lock solid structure is four to have externally threaded set bolt, correspondence offers the four-way hole on this circuit board, this set bolt can be penetrated from the opposite side of this circuit board through hole by circuit board, thereby and be screwed with the internal thread of this bolt radiator is locked to circuit board.

8, heat abstractor combination as claimed in claim 1, it is characterized in that: this fixed base plate is the C font.

9, heat abstractor combination as claimed in claim 1, it is characterized in that: this stop ring is an annular flake, and its external diameter is more bigger than the internal diameter of the pilot hole of this fixed base plate, and these stop ring central authorities are provided with a containing hole, and its week is along then being provided with a breach.

10, heat abstractor combination as claimed in claim 1, it is characterized in that: this heat abstractor combination further comprises a fan fixed frame and a radiator fan, this fan fixed frame is fixed to this radiator top, its appropriate position is provided with four screws, four jiaos of this radiator fan also respectively are provided with a locking hole, thereby pass in this locking hole and the screw of screw lock on the fan fixed frame by means of a screw radiator fan are locked to the fan fixed frame.