CN105470190A - Fixtures for holding electronic components - Google Patents

Abstract

A clamp for clamping electronic components comprises a body and a plurality of clamping jaws. Each clamping jaw extends from the edge of the body, and each clamping jaw is formed with a clamping portion for abutting against the electronic component, and the clamping portions are arranged in at least two different planes. Different clamping jaws can be used to apply the best clamping force to different clamping locations.

Description

Fixtures for holding electronic components

technical field

The invention relates to a clamp for clamping electronic components, especially a clamp with multiple jaws.

Background technique

A power transistor is a type of transistor. A general power transistor will generate high temperature when it is operated with a high current. Therefore, it is necessary to attach the power transistor to a heat sink to remove the heat generated by the power transistor. In order to effectively conduct heat energy from the power transistor to the heat sink, the heat sink and the power transistor must be clamped so that the contact surfaces of the two are closely bonded, thereby reducing the gap between the two and obtaining a good heat dissipation. thermal conductivity properties.

The common clamping mechanism nowadays is the transistor clamp. The transistor clamp generally has two types, one of which is locked on the heat sink and extends a claw to press the power transistor on the heat sink; the other form It is a U-shaped structure, which has two opposite jaws and clamps the power transistor and the heat sink between the two jaws.

Most of the existing power transistors are not elements of equal thickness, so the surface has multiple discontinuous planes, and there is a gap between the planes, so the jaws can only contact the thicker parts. Transistor clips are mostly made of bent metal sheets, and each pin of the power transistor is connected to a high current when it is in operation. Therefore, if the clamping point of the transistor clip is too close to the pins of the power transistor, it is easy to cause a short circuit.

Based on the above-mentioned limitations, the existing transistor clips must be far away from the pins when clamping, and they cannot clamp the lower height on the surface of the crystal. The available clamping area of the existing transistor clips is quite limited, so it cannot provide sufficient clamping force, and it is easy to fall off due to holding or elastic fatigue after long-term use.

Furthermore, the dimensional tolerance at the thinner part of the power transistor is smaller, and it can withstand greater pressure. Compared with the thicker part, it is a better clamping point, but the existing transistor clamps cannot be clamped due to the above limitations. Hold on to the preferred gripping point.

In view of this, the inventor of the present invention has focused on the above-mentioned prior art, and combined with the application of theories, tried his best to solve the above-mentioned problems, which became the goal of the inventor's improvement.

Contents of the invention

The object of the present invention is to provide a clamp with multiple jaws.

To achieve the above objectives, the present invention provides a clamp for clamping electronic components, which includes a body and a plurality of clamping jaws. Each clamping jaw extends from an edge of the main body, and each clamping jaw is respectively formed with a clamping portion for contacting the electronic component, and the clamping portions are arranged on at least two different planes.

Preferably, the end of each jaw is bent to form a clamping portion. Each clamping jaw forms an elastic arm connected between the body and the clamping portion, the elastic arm is bent to roughly L-shape, and the connection between the elastic arm and the body can be bent. A locating pin can be extended from the body and the locating pin is bent so as to be roughly perpendicular to the body. The locating pin and the jaws are respectively connected to opposite sides of the body and a through hole can be provided in the body.

To achieve the above object, the present invention further provides a clamp for clamping electronic components, which includes a body, a plurality of jaws and a clamping plate. Each clamping jaw extends from an edge of the main body, and each clamping jaw is respectively formed with a clamping portion for contacting the electronic component, and the clamping portions are arranged on at least two different planes. The splint extends from the other edge of the main body and is arranged opposite to the jaws, and the joint between the splint and the main body is bent.

Preferably, the end of each jaw is bent to form a clamping portion. Each clamping jaw forms an elastic arm connected between the body and the clamping portion, the elastic arm is bent to roughly L-shape, and the connection between the elastic arm and the body can be bent.

To achieve the above object, the present invention also provides a clamp for clamping electronic components, which includes multiple bodies and multiple clamping jaws, each clamping jaw is respectively formed with a clamping portion for abutting against the electronic components , the clamping parts are arranged on at least two different planes. Two ends of each jaw are respectively connected with each body.

Preferably, an elastic arm is formed at both ends of each clamping jaw, the clamping jaws are respectively bent to form a clamping portion between the two elastic arms, and a through hole can be provided on each body. A locating pin can be extended from the body, and the locating pin is bent so as to be perpendicular to the body. The locating pin and the clamping jaws can be respectively connected to opposite sides of the body. The clamp for clamping electronic components of the present invention has multiple clamping jaws, so different clamping jaws can clamp corresponding clamping surfaces on the electronic components. In this way, an optimal clamping force can be applied to each clamping surface, thereby ensuring that the electronic component is firmly clamped on the heat sink.

Description of drawings

FIG. 1 is a schematic perspective view of a clamp for clamping electronic components according to a first embodiment of the present invention.

FIG. 2 is a schematic diagram of the setup of the clamp for clamping electronic components according to the first embodiment of the present invention.

FIG. 3 is a schematic diagram of another arrangement of the clamp for clamping electronic components according to the first embodiment of the present invention.

FIG. 4 is a schematic diagram of the setup of the clamp for clamping electronic components according to the second embodiment of the present invention.

FIG. 5 is a schematic diagram of another setup of the clamp for clamping electronic components according to the second embodiment of the present invention.

FIG. 6 is a schematic diagram of an arrangement of a clamp for clamping electronic components according to a third embodiment of the present invention.

FIG. 7 is a schematic diagram of another arrangement of the clamp for clamping electronic components according to the third embodiment of the present invention.

【Symbol Description】

10 electronic components

11 cooling surface

12/13 clamping surface

20 heat sink

21 screw holes

22 positioning holes

30 thermal structure

40 screws

100 body

101 perforations

110 positioning pin

210/220 Jaws

211/221 clamping part

212/222 spring arm

300 plywood

detailed description

1 to 3, the first embodiment of the present invention provides a fixture for clamping electronic components, which is used to clamp and attach an electronic component 10 to a heat sink 20, which includes a body 100 and multiple A jaw 210/220.

In this embodiment, the main body 100 is preferably a rectangular metal sheet, and a perforation 101 is provided on the main body 100. A plurality of positioning pins 110 preferably extend from one edge of the main body 100, and each positioning pin 110 is bent and roughly Vertical body 100 .

In this embodiment, two clamping jaws 210 / 220 opposite to the positioning pins 110 extend from the other edge of the body 100 , but the number of the clamping jaws 210 / 220 is not limited in the present invention. Each clamping jaw 210/220 is a bent long metal sheet, and the two clamping jaws 210/220 are arranged parallel to each other. The end of each jaw 210/220 is bent to form a clamping portion 211/221, the clamping portion 211/221 is used to press the electronic component 10, and the two clamping portions 211/221 in this embodiment are arranged respectively on different planes. Each clamping jaw 210/220 is respectively formed with an elastic arm 212/222 connected between the main body 100 and the clamping portion 211/221. In this embodiment, the elastic arm 212/222 is bent into an L shape and The bends are preferably at acute angles, and the bends at the joints of the elastic arms 212 / 222 and the body 100 are roughly perpendicular to each other.

Referring to FIG. 2 and FIG. 3 , in this embodiment, the electronic component 10 is a power transistor, but the present invention is not limited thereto. The jig for clamping electronic components of the present invention is used to clamp and attach the electronic component 10 to the heat sink 20, wherein the heat sink 20 is provided with a screw hole 21 and a plurality of positioning holes 22 corresponding to each positioning pin 110, the electronic A cooling surface 11 and a plurality of clamping surfaces 12/13 arranged opposite to the cooling surface 11 are formed on the component 10 (in this embodiment, the electronic component 10 preferably has two clamping surfaces 12/13, but The present invention is not limited thereto), and there is a gap between the clamping surfaces 12/13 and they are not connected to each other.

In this embodiment, a screw 40 passes through the through hole 101 of the body 100 and is screwed into the screw hole 21 of the heat sink 20 , thereby locking the clamp on the heat sink 20 . Furthermore, each positioning pin 110 on the fixture is respectively inserted into each corresponding positioning hole 22 on the heat sink 20 , thereby fixing the fixture to prevent the fixture from rotating.

The electronic component 10 is placed between each clamping jaw 210/220 and the heat sink 20, and each clamping jaw 210/220 presses the corresponding clamping surface 12/13 on the electronic component 10 with its clamping portion 211/221 respectively, The electronic component 10 is clamped by the clamping force generated by each elastic arm 212 / 222 and the heat dissipation surface 11 of the electronic component 10 is closely attached to the heat sink 20 . Preferably, the heat-dissipating surface 11 and the heat-dissipating fins 20 may be sandwiched by a heat-conducting structure 30 to improve the heat conduction between the heat-dissipating surface 11 and the heat-dissipating fins 20 . The heat conduction structure 30 may preferably be a layer of heat conduction glue or a heat conduction pad, but the present invention is not limited thereto.

Referring to FIG. 4 and FIG. 5 , the second embodiment of the present invention provides a clamp for clamping electronic components, which includes a body 100 , a plurality of jaws 210 / 220 and a clamping plate 300 .

In this embodiment, the main body 100 is preferably a rectangular metal sheet, and two clamping claws 210 / 220 extend from one edge of the main body 100 , but the number of the clamping claws 210 / 220 is not limited in the present invention. Each clamping jaw 210/220 is a bent long metal sheet, and the two clamping jaws 210/220 are arranged parallel to each other. The end of each jaw 210/220 is bent to form a clamping portion 211/221, the clamping portion 211/221 is used to press the electronic component 10, and the two clamping portions 211/221 in this embodiment are arranged respectively on different planes. Each clamping jaw 210/220 is respectively formed with an elastic arm 212/222 connected between the main body 100 and the clamping portion 211/221. In this embodiment, the elastic arm 212/222 is bent into an L shape and The bends are preferably at acute angles, and the bends at the joints of the elastic arms 212 / 222 and the body 100 are roughly perpendicular to each other.

A splint 300 opposite to the jaws 210 / 220 extends from the other edge of the body 100 . The joint of the splint 300 and the body 100 is bent into an L-shape, and the bend is preferably at an acute angle.

The jig for clamping electronic components of the present invention is used to clamp and attach the electronic component 10 to the heat sink 20 . In this embodiment, the electronic component 10 is a power transistor, but the present invention is not limited thereto. A heat dissipation surface 11 and a plurality of clamping surfaces 12/13 arranged opposite to the heat dissipation surface 11 are formed on the electronic component 10 (in this embodiment, the electronic component 10 preferably has two clamping surfaces 12/13, but The present invention is not limited thereto), and there is a gap between the clamping surfaces 12/13 and they are not connected to each other.

In this embodiment, the heat dissipation surface 11 of the electronic component 10 is attached to the heat sink 20, and the electronic component 10 and the heat sink 20 are clamped between each clamping jaw 210/220 and 300 splints, and each clamping jaw 210/220 220 presses the corresponding clamping surface 12/13 on the electronic component 10 with its clamping portion 211/221 respectively, and the electronic component 10 is clamped and dissipated by the clamping force produced by each elastic arm 212/222. The surface 11 is closely attached to the heat sink 20 . Preferably, the heat-dissipating surface 11 and the heat-dissipating fins 20 may be sandwiched by a heat-conducting structure 30 to improve the heat conduction between the heat-dissipating surface 11 and the heat-dissipating fins 20 . The heat conduction structure 30 may preferably be a heat conduction layer of glue or a heat conduction gasket, but the present invention is not limited thereto.

Referring to FIGS. 6 and 7 , a third embodiment of the present invention provides a clamp for clamping electronic components, which includes a plurality of bodies 100 and a plurality of clamping jaws 210 / 220 .

In this embodiment, the jig for clamping electronic components of the present invention preferably includes two bodies 100, each body 100 is preferably a rectangular metal sheet body, and a through hole 101 is opened on the body 100, and each body Preferably, a plurality of positioning pins 110 extend from the edge of the body 100 , and each positioning pin 110 is bent so as to be roughly perpendicular to the main body 100 .

In this embodiment, the clamp for clamping electronic components of the present invention preferably includes two clamping jaws 210 / 220 , but the present invention does not limit the number of clamping jaws 210 / 220 . Each clamping jaw 210/220 is a bent long metal sheet, and the two clamping jaws 210/220 are arranged parallel to each other. The two ends of each jaw 210/220 respectively form an elastic arm 212/222, each elastic arm 212/222 is respectively connected to each body 100, and the middle section of each jaw 210/220 is respectively bent to form a gap between the two elastic arms 212. The clamping part 211/221 between /222 is used for pressing the electronic component 10, and the two clamping parts 211/221 in this embodiment are respectively arranged on different planes.

In this embodiment, the joints between each body 100 and the jaws 210 / 220 are preferably located on the same edge of the body 100 . Each elastic arm 212/222 is bent into an L-shape, and the bent portion is preferably at an acute angle, and the bent portion where the elastic arm 212/222 is connected to the main body 100 is approximately perpendicular to each other.

The jig for clamping electronic components of the present invention is used to clamp and attach the electronic component 10 to the heat sink 20 . In this embodiment, the electronic component 10 is a power transistor, but the present invention is not limited thereto. Two screw holes 21 corresponding to the through holes 101 and a plurality of positioning holes 22 corresponding to the positioning pins 110 are opened on the heat sink 20 , and a heat dissipation surface 11 and a plurality of positioning holes 22 corresponding to the heat dissipation surface 11 are formed on the electronic component 10 . Clamping surfaces 12/13 (in this embodiment, the electronic component 10 preferably has two clamping surfaces 12/13, but the present invention is not limited thereto), and there are gaps between the clamping surfaces 12/13 Poor and not connected to each other.

In this embodiment, a screw 40 is respectively passed through the through hole 101 of each body 100 and screwed into the corresponding screw hole 21 on the heat sink 20 , thereby locking the clamp on the heat sink 20 . Furthermore, each positioning pin 110 on the fixture is respectively inserted into each corresponding positioning hole 22 on the heat sink 20 , thereby fixing the fixture to prevent the fixture from slipping.

The electronic component 10 is placed between each clamping jaw 210/220 and the heat sink 20, and each clamping jaw 210/220 presses the corresponding clamping surface 12/13 on the electronic component 10 with its clamping portion 211/221 respectively, The electronic component 10 is clamped by the clamping force generated by each elastic arm 212 / 222 and the heat dissipation surface 11 of the electronic component 10 is closely attached to the heat sink 20 . Preferably, the heat-dissipating surface 11 and the heat-dissipating fins 20 may be sandwiched by a heat-conducting structure 30 to improve the heat conduction between the heat-dissipating surface 11 and the heat-dissipating fins 20 . The heat conduction structure 30 may preferably be a layer of heat conduction glue or a heat conduction pad, but the present invention is not limited thereto.

The jig for clamping electronic components of the present invention has a plurality of clamping jaws 210/220, which clamp the corresponding clamping surface 12/13 on the electronic component 10 by different clamping jaws 210/220, thereby being able to adjust Each elastic arm is designed to exert optimal clamping force on each clamping surface 12/13, and can also be clamped on the clamping surface 12 on the thinner part of the electronic component 10, so it can ensure that the electronic component 10 is tightly fixed on the heat sink 20.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Other equivalent changes using the patent spirit of the present invention all belong to the patent scope of the present invention.

Claims (20)

1., for a fixture for holding electronic components, comprise:

One body; And

Multiple jaw, respectively this jaw extends from an edge of this body respectively, respectively this jaw is formed respectively a clamping part for abutting described electronic component and those clamping parts are arranged at least two different planes.

2., as claimed in claim 1 for the fixture of holding electronic components, wherein this body extends an alignment pin and the bending of this alignment pin and general this body vertical.

3., as claimed in claim 2 for the fixture of holding electronic components, wherein this alignment pin is connected to both sides relative on this body with those jaws.

4., as claimed in claim 1 for the fixture of holding electronic components, wherein respectively the end of this jaw bends and forms this clamping part.

5., as claimed in claim 4 for the fixture of holding electronic components, wherein respectively this jaw forms the elastic arm be connected between this body and this clamping part.

6. as claimed in claim 5 for the fixture of holding electronic components, wherein this elastic arm and this body connecting place bending.

7. as claimed in claim 5 for the fixture of holding electronic components, wherein this elastic arm bending and generally L-shaped.

8., as claimed in claim 7 for the fixture of holding electronic components, wherein this body offers a perforation.

9., for a fixture for holding electronic components, comprise:

One body;

Multiple jaw, respectively this jaw extends from an edge of this body respectively, respectively this jaw is formed respectively a clamping part for abutting described electronic component and those clamping parts are arranged at least two different planes; And

One clamping plate, extend from another edge of this body and these clamping plate and those jaws are oppositely disposed.

10. as claimed in claim 9 for the fixture of holding electronic components, wherein these clamping plate and this body connecting place bending.

11. as claimed in claim 9 for the fixture of holding electronic components, and wherein respectively the end of this jaw bends and forms this clamping part.

12. as claimed in claim 11 for the fixture of holding electronic components, and wherein this jaw forms this clamping part towards the bending of these clamping plate.

13. as claimed in claim 11 for the fixture of holding electronic components, and wherein respectively this jaw forms the elastic arm be connected between this body and this clamping part.

14. as claimed in claim 13 for the fixture of holding electronic components, wherein this elastic arm and this body connecting place bending.

15. 1 kinds, for the fixture of holding electronic components, comprise:

Multiple body; And

Multiple jaw, respectively the two ends of this jaw connect respectively this body respectively, and the clamping part respectively this jaw formed respectively for abutting described electronic component and those clamping parts are arranged at least two different planes.

16. as claimed in claim 15 for the fixture of holding electronic components, and wherein respectively this jaw bends respectively and forms respectively this clamping part.

17. as claimed in claim 16 for the fixture of holding electronic components, and wherein these jaw two ends form an elastic arm respectively, and this clamping part is between two these elastic arms.

18. as claimed in claim 15 for the fixtures of holding electronic components, wherein respectively this body offer a perforation respectively.

19. as claimed in claim 15 for the fixture of holding electronic components, and wherein this body extends an alignment pin, and this alignment pin bends and general this body vertical.

20. as claimed in claim 19 for the fixture of holding electronic components, and wherein this alignment pin is connected to both sides relative on this body with those jaws.