CN2594858Y

CN2594858Y - Elastic buckle

Info

Publication number: CN2594858Y
Application number: CN 02282715
Authority: CN
Inventors: 张锡福
Original assignee: Leadtek Technology Co Ltd
Current assignee: Leadtek Technology Co Ltd
Priority date: 2002-10-29
Filing date: 2002-10-29
Publication date: 2003-12-24
Anticipated expiration: 2012-10-29

Abstract

The utility model relates to an elastic buckle which is suitable for orderly penetrating at least two components, and the components are elastically buckled. The elastic buckle is mainly provided with a hinge structure, a tension structure and a clamping structure, wherein the tension structure is provided with two tension arms. The bottom ends of the two tension arms can be symmetrically connected with the hinge structure to be used for providing the desired elastic force for a pressing component. In addition, the clamping structure is provided with two clamping arms, the bottom ends of the two clamping arms can also be symmetrically connected with the hinge structure, and the two clamping arms are used for correspondingly providing the desired supporting force for an upper top component. In addition, the elastic buckle can be integrally formed from materials of rigid materials or copper sheets, etc.

Description

Elastic fastener

Technical field

The utility model relates to a kind of elastic fastener, and particularly relevant for a kind of elastic fastener that heat abstractor can be assembled in circuit board.

Background technology

In recent years along with integrated circuit (Integrated Circuit, IC) integrated level of the internal wiring of chip (integration) is soaring significantly, make the sectional area of wire of internal circuit of IC chip constantly reduce, so will significantly improve the interior resistance of the internal wiring of IC chip.Therefore, when IC chip during in working at high speed, the interior resistance of its internal circuit produces heat energy with correspondence, so will cause temperature of IC chip itself to raise gradually.It should be noted that the phenomenon of operation mistake may take place the internal circuit of IC chip when in a single day the temperature of IC chip own exceeds its normal operating temperature range, or temporarily lost efficacy.Therefore, in order to remove IC chip its heat energy that is produced when the working at high speed rapidly, make that chip still can the long term maintenance normal operation when working at high speed, known technology is to utilize heat abstractor (HeatSink) directly to contact the back side of bare chip (die), so heat abstractor can promptly absorb the heat energy that chip is produced when working at high speed, and apace the heat energy of chip is dissipated to extraneous atmospheric environment.

To be fitted tightly between heat abstractor and the chip and reach better heat radiating effect in order to make, known technology has developed the elastic fastener that multiple heat abstractor assembling usefulness.Please refer to Fig. 1, it is the three-dimensional exploded view of known elastic fastener.Known elastic fastener 100 mainly comprises a plug 102 and a spring 104, and wherein plug 102 for example is a shape body, and it can run through the fixed orifice 22 of heat abstractor 20 and the perforation 32 of corresponding circuit board 30 in regular turn, and spring 104 can be a volute spring.When heat abstractor 20 being assembled in circuit board 30 utilizing elastic fastener 100, can earlier spring 104 correspondences be sheathed on the shape body of plug 102, then again the end of plug 102 is passed the fixed orifice 22 of heat abstractor 20 and the perforation 32 of circuit board 30 in regular turn, and make the end of plug 102 can corresponding be snapped in the back side of circuit board 30.In addition, the end of plug 102 for example has a snap-in structure 106, and it slightly is inverted cone-shaped, and the central authorities of circular cone cut the back open and form a groove 108, in order to the space as the elastic deformation of snap-in structure 106.Therefore, heat abstractor 20 can be by the snap-in structure 106 of plug 102 and the elastic force that elastic deformation produced of spring 104, thereby heat abstractor 20 elasticity are fastened on circuit board 30, make heat abstractor 20 can closely fit in the end face of chip 34, thereby reach better heat radiating effect.

It should be noted that because known elastic fastener is fasten and spring two assemblies are assembled by inserting, so in the process of assembling operation, understand the situation of generating assembly loss unavoidablely; And when assembling, must earlier spring be inserted in slotting fastening, and the action that fastens again, comparatively loaded down with trivial details on operation steps.

In addition,, make two assemblies of spring secures rail to sleeper must distinguish separately and make, so will improve the manufacturing cost of elastic fastener relatively because known elastic fastener slotting fastened and spring is two assemblies independently individually.

The utility model content

In view of this, the purpose of this utility model is to propose a kind of elastic fastener, fastens at least two assemblies in order to elasticity, for example fastens heat abstractor and circuit board in order to elasticity.

For reaching above-mentioned purpose of the present utility model, the utility model proposes a kind of elastic fastener, be suitable for running through at least two assemblies in regular turn, and elasticity fastens these assemblies.This elastic fastener mainly has a hubbing structure, a tension structure and a snap-in structure.Wherein, tension structure has two tension arms, but and the bottom symmetry of two tension arms be connected in hubbing structure, and two tension arms can provide press component required elastic force.In addition, snap-in structure have two the engaging arms, but and two the engaging arms bottoms also be connected in to symmetry hubbing structure, and two the engaging arms can the correspondence provide top component required anchorage force.In addition, this elastic fastener can be one-body molded by materials such as rigid material or copper sheets.

According to the elastic fastener of preferred embodiment of the present utility model, the shape of two tension arms of tension structure is all curved haply, and it extends and form between the bottom apart from the elastic deformation space less than the spacing on top to both sides respectively.In addition, the junction of two tension arms and hubbing structure can form a stress buffer structure respectively, and when preventing the elastic deformation of two tension arms, the junction of two tension arms and hubbing structure is difficult for stress and concentrates and be damaged.

Description of drawings

Fig. 1 is the three-dimensional exploded view of known elastic fastener;

Fig. 2 is its structural representation of elastic fastener of preferred embodiment of the present utility model;

Fig. 3 is the elastic fastener of preferred embodiment of the present utility model, and it is applied to heat abstractor is assembled in the three-dimensional exploded view of circuit board; And

Fig. 4 is that the elastic fastener of preferred embodiment of the present utility model is being assembled the diagrammatic cross-section of heat abstractor behind circuit board.

20,50: heat abstractor 22,52: fixed orifice

30,60: circuit board 32,62: perforation

34,64: chip

100: elastic fastener 102: plug

104: spring 106: snap-in structure

108: groove

200: elastic fastener 210: hubbing structure

212: stress buffer structure 220: tension structure

220a, 220b: tension arm 224: grip structure

224a, 224b: grip portion 228: stress buffer structure

230: snap-in structure 230a, 230b: the engaging arm

D1, D2: spacing

Embodiment

Please refer to Fig. 2, it is its structural representation of elastic fastener of preferred embodiment of the present utility model.Elastic fastener 200 can be made by materials such as stainless steel, spring steel and metal copper sheets, and can multiple-die press processing or mold pressing (mold pressing) mode in addition one-body molded.Elastic fastener 200 mainly comprises a hubbing structure 210, a tension structure 220 and a snap-in structure 230.Wherein, tension structure 220 has two tension arm 220a, 220b, can provide the heat abstractor of pushing Fig. 1 20 needed elastic force after its elastic deformation, and the bottom symmetry of two tension arm 220a, 220b is connected in hubbing structure 210, its shape oppositely stretches out from hubbing structure 210, thereby form an arc, make and accompany one jiao between two tension arm 220a, the 220b, and make the space D 1 of bottom of two tension arm 220a, 220b less than the space D 2 on top, in order to space as the elastic deformation of two tension arm 220a, 220b.In addition, in order to promote the convenience of user when assembling or dismantling this elastic fastener 200, more can on elastic fastener 200, form one and grip structure 224, it has two and grips the 224a of portion, 224b, and be connected to the top of two tension arm 220a, 220b, grip or the usefulness of this elastic fastener 200 of pressing with the handled easily person.In addition, in order to make good stress buffer is arranged between structure and the structure, can form a stress buffer structure 212 in the junction of tension structure 220 and hubbing structure 210, its shape can be rough curved, and can also form another stress buffer structure 228 at tension structure 220 and the junction that grips structure 224, its shape can be rough curved.Therefore, can prevent elastic fastener 200 in assembling or unloading process, or even after repeating assembling, the interstructural junction of each of elastic fastener 200 stress is concentrated and the phenomenon that is damaged.Moreover snap-in structure 230 has two engaging arm 230a, 230b, and in order to providing top component required anchorage force, and two bottoms that engage arm 230a, 230b can be connected in hubbing structure 210 symmetrically, and its shape is opened and accompanied one jiao to both sides by the bottom.

Please also refer to Fig. 3 and Fig. 4, wherein Fig. 3 is the elastic fastener of preferred embodiment of the present utility model, it is applied to assemble the three-dimensional exploded view of heat abstractor and circuit board, and Fig. 4 is the diagrammatic cross-section of elastic fastener behind assembling heat abstractor and circuit board of preferred embodiment of the present utility model.At first, the operator utilizes elastic fastener 200 and when heat abstractor 50 is assembled in circuit board 60, the operator can be earlier two grips the 224a of portion via what grip structure 224,224b, come two tension arm 220a of relative pressing tension structure 220, the top of 220b, make two tension arm 220a, the space D 2 on the top of 220b is dwindled, and inside elastic bending can be omited in the junction of tension structure 220 and hubbing structure 210, then the operator can be by the downward application of force directly over the icon, make two to engage arm 230a, angle between the 230b, it will cooperate the corresponding fixed orifice 52 and the aperture of perforation 62, and slightly inside elasticity is dwindled, so that hubbing structure 210 and snap-in structure 230 can pass the fixed orifice 52 of heat abstractor 50 and the perforation 62 of circuit board 60, then the operator decontrols two tension arm 220a, 220b, make its elastic recovery and outwards slightly strut, and two tension arm 220a, 220b will detain the hole wall that is butted on fixed orifice 52 and perforation 62 respectively, outside tension force and downward acting force are provided simultaneously, two of snap-in structure 230 engage arm 230a simultaneously, the top of 230b peaks at the back side of circuit board 60 on can correspondence, and with respect to two tension arm 220a, 220b and produce the upwards anchorage force of support.Therefore, elastic fastener 200 can be fastened on heat abstractor 50 and circuit board 60 relatively, make heat abstractor 50 closely fit in the end face of chip 64, and finish the action of the assembling of elastic fastener 200.

Please refer to Fig. 3 and Fig. 4 equally, when dismounting elastic fastener 200, the operator can two grip the 224a of portion via what grip structure 224,224b comes two tension arm 220a of pressing tension structure 220, the top of 220b, make two tension arm 220a, space D 2 between the 220b is dwindled, then the operator can force in elastic fastener 200 by being about directly over the icon downwards, make two to engage arm 230a, the top of 230b no longer connects the back side that is butted on circuit board 50, but the two engaging arm 230a of operator's application of force pressing afterwards, 230b, so as to dwindling two engaging arm 230a, angle between the 230b, last take advantage of a situation again upwards extracted hubbing structure 210 and snap-in structure 230 out in circuit board 60 perforation 62, and finishes the action of the dismounting of elastic fastener 200.

Based on above-mentioned, elastic fastener of the present utility model is suitable for running through in regular turn at least two assemblies, but and elasticity fasten these assemblies.This elastic fastener mainly has a hubbing structure, a tension structure and a snap-in structure.Wherein, tension structure has two tension arms, but and the bottom symmetry of two tension arms be connected in hubbing structure, and two tension arms can provide press component required elastic force.In addition, snap-in structure have two the engaging arms, but and two the engaging arms bottoms also be connected in to symmetry hubbing structure, and two the engaging arms can the correspondence provide top component required anchorage force.In addition, this elastic fastener can be one-body molded by materials such as rigid material or copper sheets.

In sum, elastic fastener of the present utility model can be made by metal materials such as stainless steel, Elastic Steel and metal copper sheets, and can utilize the mode of machinings such as mold pressing one-body molded in addition, fasten at least two assemblies in order to elasticity, for example fasten heat abstractor and the circuit board that preferred embodiment of the present utility model is mentioned in order to elasticity.Therefore, with known elastic fastener in comparison, the design of elastic fastener of the present utility model can significantly reduce the quantity of assembly, so can effectively reduce the cost of manufacture of elastic fastener.

Claims

1. an elastic fastener is suitable for running through at least two assemblies in regular turn, and elasticity fastens those assemblies, it is characterized in that this elastic fastener comprises at least:

One hubbing structure;

One tension structure has one first tension arm and one second corresponding tension arm at least, and wherein the bottom of the bottom of this first tension arm and this second tension arm is connected in this hubbing structure; And

One snap-in structure has one first engaging arm and one second corresponding engaging arm at least, and wherein the bottom of the bottom of this first engaging arm and this second engaging arm is connected in this hubbing structure.

2. elastic fastener as claimed in claim 1 is characterized in that, the shape of this first tension arm and this second tension arm is all curved haply.

3. elastic fastener as claimed in claim 1 is characterized in that, the junction of this first tension arm and this hubbing structure forms a stress buffer structure, and its shape is curved.

4. elastic fastener as claimed in claim 1 is characterized in that, the junction of this second tension arm and this hubbing structure forms a stress buffer structure, and its shape is curved.

5. elastic fastener as claimed in claim 1 is characterized in that, this hubbing structure, this tension structure and this snap-in structure are formed in one.

6. elastic fastener as claimed in claim 5 is characterized in that, its material be stainless steel, spring steel and metal copper sheet one of them.

7. elastic fastener as claimed in claim 1, it is characterized in that, comprise that more one grips structure, it has one first and grips portion and corresponding one second and grip portion, wherein this first portion of gripping is connected to the top of this first tension arm, and this second portion of gripping is connected in the top of this second tension arm.

8. elastic fastener as claimed in claim 7 is characterized in that, this first junction that grips the top of portion and this first tension arm forms a stress buffer structure, and its shape is curved.