CN2594858Y - elastic buckle - Google Patents

Abstract

An elastic buckle is suitable for sequentially penetrating at least two components and elastically buckling the components. The elastic buckle mainly comprises a hinge structure, a tension structure and a clamping structure. The tension structure is provided with two force arms, and the bottom ends of the two force arms can be symmetrically connected with the pivot structure to provide the elastic force required by the 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 to the pivot structure, and the two clamping arms are used for correspondingly providing the supporting force required by the upper top component. In addition, the elastic buckle can be integrally formed by materials such as rigid materials or copper sheets.

Description

elastic buckle

technical field

The utility model relates to an elastic buckle, in particular to an elastic buckle capable of assembling a cooling device on a circuit board.

Background technique

In recent years, as the integration of the internal circuit of the integrated circuit (Integrated Circuit, IC) chip has increased significantly, the cross-sectional area of the internal circuit of the IC chip has been continuously reduced, which will greatly improve the internal circuit of the IC chip. internal resistance. Therefore, when the IC chip operates at high speed, the internal resistance of its internal circuit will correspondingly generate heat energy, which will cause the temperature of the IC chip itself to gradually increase. It is worth noting that once the temperature of the IC chip itself exceeds its normal operating temperature range, the internal circuit of the IC chip may experience operational errors or temporarily fail. Therefore, in order to quickly remove the heat energy generated by the IC chip during high-speed operation, so that the chip can still maintain normal operation for a long time during high-speed operation, the known technology uses a heat sink (HeatSink) to directly contact the bare chip (die). On the back side, the cooling device can quickly absorb the heat energy generated by the chip during high-speed operation, and quickly dissipate the heat energy of the chip to the outside atmosphere.

In order to closely fit the heat sink and the chip to achieve a good heat dissipation effect, various elastic fasteners for assembling the heat sink have been developed in the known technology. Please refer to FIG. 1 , which is an exploded perspective view of a known elastic fastener. The known elastic buckle 100 mainly includes a plug 102 and a spring 104, wherein the plug 102 is, for example, a rod-shaped body, which can sequentially pass through the fixing hole 22 of the heat sink 20 and the corresponding through hole 32 of the circuit board 30 , and the spring 104 can be a helical spring. When using the elastic buckle 100 to assemble the heat sink 20 on the circuit board 30, the spring 104 can be sleeved on the rod-shaped body of the plug 102 first, and then the ends of the plug 102 are passed through the heat sink in sequence. 20 and the through hole 32 of the circuit board 30 , so that the end of the plug 102 can be buckled on the back of the circuit board 30 correspondingly. In addition, the end of the plug 102 has, for example, an engaging structure 106 , which is slightly in the shape of an inverted cone, and the center of the cone is cut to form a groove 108 for the elastic deformation of the engaging structure 106 . Therefore, the heat sink 20 can elastically buckle the heat sink 20 to the circuit board 30 through the elastic force generated by the engaging structure 106 of the plug 102 and the elastic deformation of the spring 104, so that the heat sink 20 can be closely attached to the circuit board 30. The top surface of the chip 34 thus achieves a good heat dissipation effect.

It is worth noting that since the known elastic buckle is assembled by the bolt and the spring, it is inevitable that the components will be lost during the assembly operation; Inserting the spring into the plug, and then fastening, the operation steps are relatively cumbersome.

In addition, since the pin and the spring of the known elastic fastener are two independent components, the two components of the elastic fastener must be manufactured separately, which will relatively increase the manufacturing cost of the elastic fastener.

Utility model content

In view of this, the purpose of the present invention is to provide an elastic fastener for elastically fastening at least two components, for example, for elastically fastening a heat sink and a circuit board.

In order to achieve the above purpose of the utility model, the utility model proposes an elastic buckle, which is suitable for sequentially passing through at least two components and elastically fastening these components. The elastic buckle mainly has a hinge structure, a tension structure and a locking structure. Wherein, the tension structure has two tension arms, and the bottom ends of the two tension arms can be symmetrically connected to the hinge structure, and the two tension arms can provide the elastic force required by the pressing component. In addition, the engaging structure has two engaging arms, and the bottom ends of the two engaging arms can also be symmetrically connected to the hinge structure, and the two engaging arms can correspondingly provide the supporting force required by the upper assembly. In addition, the elastic buckle can be integrally formed of steel material or copper sheet.

According to the elastic buckle of the preferred embodiment of the present invention, the two tension arms of the tension structure are generally arc-shaped, and extend to both sides to form an elastic deformation space where the distance between the bottom ends is smaller than the distance between the top ends. In addition, the joints of the two tension arms and the hinge structure can respectively form a stress buffer structure to prevent elastic deformation of the two tension arms, and the joints of the two tension arms and the hinge structure are less likely to be damaged due to stress concentration.

Description of drawings

Figure 1 is an exploded perspective view of a known elastic fastener;

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

Fig. 3 is a three-dimensional exploded view of the elastic buckle of a preferred embodiment of the present invention, which is applied to assemble the heat sink on the circuit board; and

4 is a schematic cross-sectional view of the elastic buckle in a preferred embodiment of the present invention after assembling the heat sink on the circuit board.

20, 50: cooling device 22, 52: fixing holes

30, 60: circuit board 32, 62: through hole

34, 64: chip

100: elastic buckle 102: plug

104: Spring 106: Snap-in structure

108: Groove

200: elastic buckle 210: hinge structure

212: Stress buffer structure 220: Tension structure

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

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

230: Snapping structure 230a, 230b: Snapping arm

D1, D2: Spacing

Detailed ways

Please refer to FIG. 2 , which is a structural schematic diagram of the elastic buckle in a preferred embodiment of the present invention. The elastic buckle 200 can be made of materials such as stainless steel, spring steel, and metal copper, and can be integrally formed by continuous punching or mold pressing. The elastic buckle 200 mainly includes a hinge structure 210 , a tension structure 220 and an engaging structure 230 . Wherein, the tension structure 220 has two tension arms 220a, 220b, which can provide the elastic force required to press the heat sink 20 of FIG. The shape extends outwardly from the pivot structure 210, thus forming an arc, so that there is an angle between the two tension arms 220a, 220b, and the distance D1 between the bottom ends of the two tension arms 220a, 220b is smaller than the distance D2 between the top ends. It serves as a space for the elastic deformation of the two tension arms 220a, 220b. In addition, in order to improve the convenience of the user when assembling or disassembling the elastic buckle 200, a gripping structure 224 can be formed on the elastic buckle 200, which has two gripping parts 224a, 224b, and is respectively connected to two The top ends of the tension arms 220a, 220b are used for the operator to pinch or press the elastic buckle 200 conveniently. In addition, in order to have a good stress buffer between the structures, a stress buffer structure 212 can be formed at the joint of the tension structure 220 and the hinge structure 210. Another stress buffering structure 228 is also formed at the joint of the holding structure 224, and its shape may be roughly arc-shaped. Therefore, it is possible to prevent damage to the connections between the various structures of the elastic fastener 200 due to stress concentration during the assembly or disassembly process of the elastic fastener 200 , even after repeated assembly. Furthermore, the engaging structure 230 has two engaging arms 230a, 230b for providing the supporting force required by the upper assembly, and the bottom ends of the two engaging arms 230a, 230b can be symmetrically connected to the hinge structure 210, and its shape Open from the bottom to both sides with a corner.

Please refer to Fig. 3 and Fig. 4 at the same time, wherein Fig. 3 is a perspective exploded view of an elastic fastener of a preferred embodiment of the present invention, which is applied to assemble a heat sink and a circuit board, and Fig. 4 is a preferred embodiment of the present utility model A schematic cross-sectional view of the elastic fastener of the embodiment after assembling the heat dissipation device and the circuit board. First, when the operator uses the elastic buckle 200 to assemble the heat sink 50 on the circuit board 60, the operator can press the two tension arms of the tension structure 220 relative to each other through the two gripping parts 224a, 224b of the gripping structure 224. 220a, 220b, so that the distance D2 between the top ends of the two tension arms 220a, 220b is reduced, and the connection between the tension structure 220 and the hinge structure 210 will be slightly elastically bent inward, and then the operator can apply force from directly above the icon, The included angle between the two engaging arms 230a, 230b will match the diameters of the corresponding fixing holes 52 and the through holes 62, and slightly elastically shrink inward, so that the hinge structure 210 and the engaging structure 230 can pass through The fixing hole 52 of the cooling device 50 and the through hole 62 of the circuit board 60, and then the operator releases the two tension arms 220a, 220b to make them elastically recover and stretch outward slightly, and the two tension arms 220a, 220b will respectively buckle On the walls of the fixing hole 52 and the through hole 62, an outward tension force and a downward force are simultaneously provided, and at the same time, the top ends of the two engaging arms 230a, 230b of the engaging structure 230 will be able to correspond to the top of the circuit board 60. The back side, and generates a supporting force for supporting upwards relative to the two tension arms 220a, 220b. Therefore, the elastic buckle 200 can be fastened relatively to the heat sink 50 and the circuit board 60 , so that the heat sink 50 is closely attached to the top surface of the chip 64 , and the assembly of the elastic buckle 200 is completed.

Please also refer to FIG. 3 and FIG. 4 , when disassembling the elastic buckle 200, the operator can press the top ends of the two tension arms 220a, 220b of the tension structure 220 through the two pinch portions 224a, 224b of the pinch structure 224, so that The distance D2 between the two tension arms 220a, 220b is reduced, and then the operator can apply force to the elastic buckle 200 from directly above the icon, so that the top ends of the two engaging arms 230a, 230b are no longer in contact with the circuit board 50 Afterwards, the operator can press the two engaging arms 230a, 230b together to reduce the angle between the two engaging arms 230a, 230b, and finally draw the hinge structure 210 and the engaging structure 230 out of the circuit The through hole 62 of the board 60 completes the disassembly action of the elastic buckle 200 .

Based on the above, the elastic buckle of the present invention is suitable for sequentially passing through at least two components, and can elastically fasten these components. The elastic buckle mainly has a hinge structure, a tension structure and a locking structure. Wherein, the tension structure has two tension arms, and the bottom ends of the two tension arms can be symmetrically connected to the hinge structure, and the two tension arms can provide the elastic force required by the pressing component. In addition, the engaging structure has two engaging arms, and the bottom ends of the two engaging arms can also be symmetrically connected to the hinge structure, and the two engaging arms can correspondingly provide the supporting force required by the upper assembly. In addition, the elastic buckle can be integrally formed of steel material or copper sheet.

In summary, the elastic buckle of the present invention can be made of metal materials such as stainless steel, elastic steel, and metal copper sheet, and can be integrally formed by mechanical processing such as molding to elastically fasten at least two components. For example, it is used to elastically fasten the heat sink and the circuit board mentioned in the preferred embodiment of the present invention. Therefore, compared with the known elastic fastener, the design of the elastic fastener of the present invention can greatly reduce the number of components, thus effectively reducing the manufacturing cost of the elastic fastener.

Claims (8)

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.

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