CN2796315Y

CN2796315Y - Heat sink assembly

Info

Publication number: CN2796315Y
Application number: CN 200520017173
Authority: CN
Inventors: 胡军良; 凌昕
Original assignee: Molex LLC
Current assignee: Molex LLC
Priority date: 2005-04-22
Filing date: 2005-04-22
Publication date: 2006-07-12
Anticipated expiration: 2015-04-22

Abstract

A heat sink assembly comprises a heat sink and two fastening devices, wherein the heat sink comprises a base and heat dissipation fins; the two buckling devices fix the heat radiator on a circuit board, wherein the first buckling device comprises a first buckling piece, a second buckling piece and a pivot shaft; the first fastener comprises a pressing and buckling arm, two sides of the pressing and buckling arm are respectively bent downwards to form a pivoting part, and one end of the pressing and buckling arm is bent downwards to extend out of a hook; the second fastener is provided with an installation part connected to one end of the radiator, one end of the installation part is bent to extend out of a pressing part, and two sides of the pressing part are bent downwards to form a pivoting part; the pivot shaft pivots the first fastener and the second fastener together; when the first buckling device is in a locking state, the pressing part of the second buckling device is pressed above the pressing arm of the first buckling device to prevent the first buckling device from pivoting so as to enable the hook to be hooked on the circuit board. The heat dissipation device has a compact combination structure and is convenient to assemble and disassemble.

Description

The heat abstractor combination

Technical field

The utility model relates to a kind of heat abstractor combination, refers to a kind of compact conformation especially, and mounting or dismounting are convenient, is fit to be applied in the heat abstractor combination on the communicating circuit plate.

Background technology

At present, the power of the electronic component on the communicating circuit plate is increasing, the heat that sends is more and more, therefore these electronic components need that also radiator is installed and come distribute heat, and the communication cabinet that is subject to standard universal is (as the 1u server, it highly has only 4.45 centimetres) the inner space less, so the radiator of its use has higher requirements dimensionally, its volume is generally less.

The radiating component fastener that connects formula as No. 91200750 described a kind of pivot of Taiwan patent application, it comprises two fasteners, the middle part clinching of this first fastener is on the radiating fin of radiator, the one end hook is buckled on the button hole of fixed frame one end, the other end and second fastener are articulated, this second fastener, one end is provided with a clasp, this clasp hook is located on the button hole of the fixed frame other end, the other end of this second fastener is provided with operating portion, this device for fastening mounting or dismounting are comparatively convenient, but to cooperate with a fixed frame that adds in addition, and the upwardly extending operating portion of its second fastener has also further increased the whole height of fastener, is not suitable for being applied on the comparatively compact communicating circuit plate of volume.

No. 88202201 described cooling integrated fastening structure of Taiwan patent application for another example, it comprises a device for fastening, this device for fastening comprises a pressing part, one end of this pressing part is provided with the fixed part of an anchor shape, the other end of this pressing part is provided with a fixed leg, this fixed leg end is provided with the circular arc termination, this fixed part is connected between the fin of radiator during assembling, and the circular arc termination of fixed leg is plugged on the circuit board in the corresponding jack, thereby radiator is installed on the circuit board.The anchor shape fixed part of this device for fastening is easier to come off under the lower situation of radiating fin height, and this device for fastening adopts the circular arc termination to be combined in the jack of circuit board on the other hand, and this combination also is unfavorable for dismounting.

Summary of the invention

The purpose of this utility model is to provide a kind of heat abstractor combination, especially a kind of compact conformation, and mounting or dismounting are convenient, and are solid and reliable, are fit to be applied in the heat abstractor combination on the communicating circuit plate.

For achieving the above object, the utility model provides the combination of a kind of heat abstractor, and two device for fastening that it comprises a radiator and is installed in these radiator two ends respectively, this radiator comprise a pedestal and somely make progress projection and the radiating fin that goes out by pedestal; This two device for fastening can be fixed to this radiator on one circuit board, and one of them first device for fastening comprises one first fastener, second fastener and a drive-connecting shaft; This first fastener comprises a clinching arm, and each bends out an articulated section downwards these clinching arm both sides, and an end of this clinching arm bending downwards extends a clasp that combines with circuit board; This second fastener is provided with an installing department that is used for being connected to this radiator one end, and a pressing part is extended in the end bending of this installing department, and each bends out an articulated section downwards the terminal both sides of this pressing part; This drive-connecting shaft is located between the articulated section of the articulated section of first fastener and second fastener, thereby this first fastener and second fastener are articulated; When this first device for fastening was in locked state, the pressing part of this second fastener was the clinching arm top that is crimped on this first fastener, made the clasp hook solid on circuit board thereby stop this first fastener to pivot.

The utlity model has following beneficial effect: the clasp of this first device for fastening is directly to be combined on the circuit board, need not to use fixed frame, and when this first device for fastening is in locked state, the pressing part of this second fastener is the clinching arm top that is crimped on this first fastener, so its structure is comparatively flat, be fit to be applied on the narrow and small communicating circuit plate in space; And when dismounting, only need pull first fastener, and make its relative second fastener pivoted, its clasp can be deviate from circuit board, and is simple to operation.

Description of drawings

Fig. 1 is the three-dimensional exploded view of combination of the utility model heat abstractor and circuit board.

Fig. 2 is the three-dimensional combination figure of combination of the utility model heat abstractor and circuit board.

Fig. 3 is the three-dimensional exploded view of first device for fastening of the utility model heat abstractor combination.

Fig. 4 is the three-dimensional combination figure of first device for fastening of the utility model heat abstractor combination.

Embodiment

See also Fig. 1 to Fig. 4, a kind of heat abstractor combination, two device for fastening 3,8 that it comprises a radiator 1 and is installed in these radiator 1 two ends respectively, the heat-generating electronic elements 72 that the combination of this heat abstractor is used on the circuit board 7 provides heat radiation, wherein respectively is provided with a snap groove 74 on two ora terminalis that this circuit board 7 is relative.

This radiator 1 comprises a pedestal 12 and some by pedestal 12 upwards projection and the radiating fin 14 that goes out, and the two ends of this pedestal 12 respectively are provided with two screws (not label).

This first device for fastening 3 comprises one first fastener 32, second fastener 34 and a drive-connecting shaft 36.

This first fastener 32 comprises a clinching arm 38, each bends out an articulated section 40 downwards the both sides at these clinching arm 38 middle parts, respectively be provided with a pivoted hole 42 on this two articulated section 40, a button arm 44 is extended in the bending downwards of one end of this clinching arm 38, this button arm 44 oppositely bends and extends a clasp 46, the both sides of this clasp 46 respectively extend upward a stop section 48, and wherein the middle part of this button arm 38 outwards stamps out an Actuator Division 50.

This second fastener 34 is provided with an installing department 52, on this installing department 52 two screws that should radiator 1 one ends are offered two installation holes 54, respectively be provided with a bolt 80 in this two installation hole, thereby this two bolt 80 can combine with the screw on the radiator 1 this first device for fastening 3 is fixed on the radiator 1, one end of this installing department 52 is inclined upwardly and bends out a kink 56, this kink 56 extend horizontally away a pressing part 58 again, each bends out an articulated section 60 downwards the terminal both sides of this pressing part 58, also respectively is provided with a pivoted hole 62 on this two articulated section 60.

Thereby this drive-connecting shaft 36 is located in two pivoted holes 62 of two pivoted holes 42 of this first fastener 32 and second fastener 34 first fastener 32 and second fastener 34 is articulated.

An end that is installed in second device for fastening 8 of this radiator 1 other end is provided with an installing department 82, and its other end then is provided with a clasp 84 in order to combine with circuit board 7.

When this heat abstractor is assembled into this circuit board 7, install second device for fastening 8 earlier, its clasp 84 is attached in another snap groove 74 of circuit board 7, press down the clinching arm 38 of first device for fastening, 3 first fasteners 32 again, clasp 46 is installed with in two snap grooves 74 of this circuit board 7, and fastener is in the bottom surface of this circuit board 7, and this two stop section 48 is connected to the both sides of snap groove 74, prevents that clasp 46 from taking place to rock improperly from circuit board 7 bottom surfaces.This moment, the bottom surface of these second fastener, 34 pressing parts 58 was the top face that are crimped on first fastener, 32 clinching arms 38, stop this first fastener 32 to continue to pivot, thereby make 3 pairs of radiators 1 of first device for fastening and circuit board 7 keep a tensile force to make clasp 46 hooks solid on circuit board 7, this radiator 1 can firmly be attached on the circuit board 7, and these radiator 1 pedestal 12 bottom surfaces are crimped onto on the electronic component 72.

The clasp 46 of this first device for fastening 3 is directly to be combined on the circuit board 7, need not to use fixed frame, and when this first device for fastening 3 is in locked state, the pressing part 58 of this second fastener 34 is clinching arm 38 tops that are crimped on this first fastener 32, the upwardly extending operating portion of fastener shown in No. the 91200750th, Taiwan patent application not, so its structure is comparatively flat, be fit to be applied on the narrow and small communicating circuit plate in space; And when dismounting, only need to use a screwdriver (figure does not show) to act on the Actuator Division 50 of button arm 44, and can pull first fastener 32, make its relative second fastener 34 pivoted, its clasp 46 can be deviate from the snap groove 74 of circuit board 7, and is simple to operation.

Claims

1, a kind of heat abstractor combination, two device for fastening that it comprises a radiator and is installed in these radiator two ends respectively, this radiator comprises a pedestal and some radiating fins; This two device for fastening can be fixed to this radiator on one circuit board, and one of them first device for fastening comprises one first fastener, second fastener and a drive-connecting shaft; It is characterized in that:

This first fastener comprises a clinching arm, and each bends out an articulated section downwards these both sides, clinching arm middle part, and an end of this clinching arm bending downwards extends a clasp that combines with circuit board;

This second fastener is provided with an installing department that is used for being connected to this radiator one end, and a pressing part is extended in the end bending of this installing department, and each bends out an articulated section downwards the terminal both sides of this pressing part;

This drive-connecting shaft is located between the articulated section of the articulated section of first fastener and second fastener, thereby this first fastener and second fastener are articulated;

When this first device for fastening was in locked state, the pressing part of this second fastener was the clinching arm top that is crimped on this first fastener, made the clasp hook solid on circuit board thereby stop this first fastener to pivot.

2, heat abstractor according to claim 1 combination is characterized in that: an end of this clinching arm is that a button arm is extended in bending downwards earlier, and this clasp to be end from this button arm further bend again extends.

3, heat abstractor combination according to claim 2, it is characterized in that: the middle part of this button arm outwards stamps out an Actuator Division, acts on this Actuator Division with a screwdriver and can make clasp breaking circuit plate easily.

4, heat abstractor combination according to claim 1, it is characterized in that: respectively be provided with a pivoted hole on two articulated sections of this first fastener, on two articulated sections of this second fastener also each correspondence be provided with a pivoted hole, thereby this drive-connecting shaft is located in and this first fastener and second fastener is articulated in the above-mentioned pivoted hole.

5, heat abstractor combination according to claim 1, it is characterized in that: an end of this installing department is to be inclined upwardly earlier to bend out a kink, extends this pressing part from this kink terminal horizontal again.

6, heat abstractor combination according to claim 1, it is characterized in that: the opposite end of this radiator base is respectively equipped with several screws, correspondence offers several installation holes on the installing department of this second fastener, thereby some bolts are installed in the installation hole and combine with screw this first device for fastening is fixed on the radiator.

7, heat abstractor combination according to claim 1, it is characterized in that: two ora terminalis that this circuit board is relative respectively are provided with a snap groove, and the clasp of this first fastener is installed with in the snap groove of this circuit board, and hook is located at the bottom surface of circuit board.

8, heat abstractor combination according to claim 7, it is characterized in that: the both sides of this clasp respectively extend upward a stop section, rock thereby the both sides that this two stop section can be connected to this snap groove prevent this first device for fastening.

9, heat abstractor according to claim 1 combination, it is characterized in that: an end that is installed in second device for fastening of this radiator other end is provided with an installing department, and its other end then is provided with a clasp in order to combine with circuit board.