CN217468399U

CN217468399U - MOS pipe crimping device

Info

Publication number: CN217468399U
Application number: CN202221118143.9U
Authority: CN
Inventors: 严幸锋
Original assignee: Xi'an Shenghong Electric Co ltd
Current assignee: Xi'an Shenghong Electric Co ltd
Priority date: 2022-05-10
Filing date: 2022-05-10
Publication date: 2022-09-20
Anticipated expiration: 2032-05-10

Abstract

The utility model provides a MOS tube crimping device, which is used for fixing two relative MOS tubes and silica gel cloth fixed on each MOS tube on a radiating fin for radiating; the MOS tube crimping device comprises a crimping piece and a screw; the crimping connector comprises a first sleeve, a second sleeve, a first upper extending piece and a second upper extending piece which are connected with the upper end of the first sleeve and are arranged oppositely, a first lower extending piece and a second lower extending piece which are connected with the lower end of the second sleeve and are arranged oppositely, a first pressing piece which is connected with the first upper extending piece and the first lower extending piece and is pressed on one MOS tube, and a second pressing piece which is connected with the second upper extending piece and the second lower extending piece and is pressed on the other MOS tube. The utility model discloses a crimping piece solves the crimping of two narrow and small MOS pipes in space to let the MOS pipe keep away from radiator and screw, satisfy ann's rule demand, and reduce the problem that the MOS pipe pressed the too tight damage.

Description

MOS pipe crimping device

Technical Field

The utility model relates to a MOS pipe crimping device.

Background

As shown in fig. 1, through holes are formed on a conventional MOS tube 1 and a silicon rubber cloth at the bottom thereof, and a metal screw 2 directly penetrates through the through holes of the two MOS tubes 1 and the two silicon rubber cloths, so that the two MOS tubes 1 and the two silicon rubber cloths are screwed and fixed on two opposite sides of a heat sink 3 respectively for heat dissipation; or a heat-shrinkable sleeve is sleeved by a metal pressing plate, and a screw is used for fastening and crimping.

Because metal screw 2 passes MOS pipe 1 and adhesive tape and fixes, screw 2 connects fin 3 and is a ground connection PE, and is too close (about 0.3 mm) apart from MOS pipe 1, can not satisfy the ann rule demand.

Need improve the promotion admittedly, fasten the MOS pipe in narrow and small space, and satisfy the ann rule demand.

Disclosure of Invention

An object of the utility model is to provide a solve MOS pipe crimping device of crimping of narrow and small two MOS pipes in space.

The utility model provides a MOS tube crimping device, which is used for fixing two relative MOS tubes and silica gel cloth fixed on each MOS tube on a radiating fin for radiating; the MOS tube crimping device comprises a crimping piece and a screw for fixing the crimping piece on the radiating fin; the crimping connection comprises a first sleeve sleeved at the upper end of the screw, a second sleeve sleeved at the lower end of the screw, a first upper extending piece and a second upper extending piece which are connected with the upper end of the first sleeve and are arranged oppositely, a first lower extending piece and a second lower extending piece which are connected with the lower end of the second sleeve and are arranged oppositely, a first pressing piece which is connected with the first upper extending piece and the first lower extending piece and is pressed on one of the MOS tubes, and a second pressing piece which is connected with the second upper extending piece and the second lower extending piece and is pressed on the other MOS tube.

Preferably, the two MOS tubes are respectively arranged oppositely to form a first MOS tube and a second MOS tube, the silicon rubber cloth fixed on the first MOS tube is a first silicon rubber cloth, and the silicon rubber cloth fixed on the second MOS tube is a second silicon rubber cloth; the radiating fin comprises a radiating base, a first radiating body and a second radiating body, wherein the first radiating body and the second radiating body are fixed on the radiating base and are arranged oppositely, the first silicon rubber cloth is extruded by the first pressing piece and attached to the first radiating body, and the second silicon rubber cloth is extruded by the second pressing piece and attached to the second radiating body.

Preferably, the crimp is a non-metallic insulating crimp.

Preferably, the second sleeve is located on the heat dissipation base.

Preferably, the first upper extending piece and the second upper extending piece extend downwards, and the first lower extending piece and the second lower extending piece extend upwards.

Preferably, a first positioning groove is formed in the first MOS transistor, and a second positioning groove is formed in the second MOS transistor; the crimping piece further comprises a first protrusion connected with the first pressing piece and located in the first positioning groove, and a second protrusion connected with the second pressing piece and located in the second positioning groove.

The utility model discloses a crimping piece solves the crimping of two narrow and small MOS pipes in space to let the MOS pipe keep away from radiator and screw, satisfy ann's rule demand, and reduce the problem that the MOS pipe pressed the too tight damage.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

FIG. 1 is a schematic structural view of a conventional MOS transistor fixed on opposite sides of a heat sink;

fig. 2 is a cross-sectional view of a MOS tube crimping apparatus according to an embodiment of the present invention;

fig. 3 is a perspective view of a MOS tube crimping apparatus according to an embodiment of the present invention.

Detailed Description

The utility model relates to a MOS manages crimping device for will relatively two MOS pipes and with fix the silica gel cloth on every MOS pipe and fix and dispel the heat on the fin.

As shown in fig. 2 and fig. 3, the first MOS transistor 10 and the second MOS transistor 20 are oppositely disposed, respectively, the silicon rubber sheet fixed on the first MOS transistor 10 is the first silicon rubber sheet 30, and the silicon rubber sheet fixed on the second MOS transistor 20 is the second silicon rubber sheet 40; the heat sink 50 includes a heat sink base 51, a first heat sink 52 and a second heat sink 53 fixed on the heat sink base 51 and disposed opposite to each other, wherein the first silicon adhesive tape 30 is attached to the first heat sink 52, and the second silicon adhesive tape 40 is attached to the second heat sink 53.

The MOS tube crimping apparatus of the present invention includes a crimping member 60 and a screw 70 for fixing the crimping member 60 to the heat dissipating base 51 of the heat dissipating fin 50.

The crimping member 60 is a non-metal insulation crimping member, and includes a first sleeve 61 sleeved on the upper end of the screw 70, a second sleeve 62 sleeved on the lower end of the screw 70 and located on the heat dissipation base 51, a first upper extending piece 63 and a second upper extending piece 64 connected with the upper end of the first sleeve 61 and oppositely arranged, a first lower extending piece 65 and a second lower extending piece 66 connected with the lower end of the second sleeve 62 and oppositely arranged, a first pressing piece 67 connected with the first upper extending piece 63 and the first lower extending piece 65 and pressed on the first MOS transistor 10, and a second pressing piece 68 connected with the second upper extending piece 64 and the second lower extending piece 66 and pressed on the second MOS transistor 20.

The first upper extending piece 63 and the second upper extending piece 64 are both extended downward, and the first lower extending piece 65 and the second lower extending piece 66 are both extended upward.

The screw 70 passes through the first sleeve 61 and the second sleeve 62 of the pressing member 60 and then is fixed on the heat dissipation base 51 of the heat sink 50, and then the pressing member 60 is pressed by the screw 70 to expand towards two sides, so that the first pressing piece 67 presses the first MOS tube 10 and the first silicon rubber sheet 30 to be attached to the first heat sink 52 (i.e. the first silicon rubber sheet 30 is pressed by the first pressing piece 67 and attached to the first heat sink 52), and the second pressing piece 68 presses the second MOS tube 20 and the second silicon rubber sheet 40 to be attached to the first heat sink 52 to be fixed (i.e. the second silicon rubber sheet 40 is pressed by the second pressing piece 68 and attached to the second heat sink 53).

In order to achieve better crimping effect, a first positioning groove 11 is arranged on the first MOS transistor 10, and a second positioning groove 21 is arranged on the second MOS transistor 20; the crimping member 60 further includes a first projection 691 connected to the first pressing piece 67 and located in the first positioning recess 11, and a second projection 692 connected to the second pressing piece 68 and located in the second positioning recess 21.

The utility model relates to a fixed mode of MOS pipe on the circuit board is applied to the trade that contains all circuit boards of double MOS pipe, solves the narrow and small fixed problem in its space to satisfy heat dissipation and ann rule demand.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.

Claims

1. A MOS tube compression joint device is used for fixing two MOS tubes and silica gel cloth fixed on each MOS tube on a radiating fin for radiating; the heat sink is characterized by comprising a crimping piece and a screw for fixing the crimping piece on the heat sink;

the crimping piece comprises a first sleeve sleeved at the upper end of the screw, a second sleeve sleeved at the lower end of the screw, a first upper extending piece and a second upper extending piece which are connected with the upper end of the first sleeve and are arranged oppositely, a first lower extending piece and a second lower extending piece which are connected with the lower end of the second sleeve and are arranged oppositely, a first pressing piece which is connected with the first upper extending piece and the first lower extending piece and is pressed on one of the MOS tubes, and a second pressing piece which is connected with the second upper extending piece and the second lower extending piece and is pressed on the other MOS tube.

2. The MOS tube pressing apparatus according to claim 1, wherein the two MOS tubes are respectively arranged oppositely to each other as a first MOS tube and a second MOS tube, the silicon rubber sheet fixed to the first MOS tube is a first silicon rubber sheet, and the silicon rubber sheet fixed to the second MOS tube is a second silicon rubber sheet; the radiating fin comprises a radiating base, a first radiating body and a second radiating body, wherein the first radiating body and the second radiating body are fixed on the radiating base and are arranged oppositely, the first silicon rubber cloth is extruded by the first pressing piece and attached to the first radiating body, and the second silicon rubber cloth is extruded by the second pressing piece and attached to the second radiating body.

3. The MOS tube crimping device according to claim 1 or 2, wherein the crimping member is a non-metal insulation crimping member.

4. The MOS die bonding apparatus of claim 2, wherein the second sleeve is located on the heat sink base.

5. The MOS tube crimping device according to claim 2, wherein the first upper extending piece and the second upper extending piece are both extended downward, and the first lower extending piece and the second lower extending piece are both extended upward.

6. The MOS tube crimping device of claim 2, wherein a first positioning groove is formed on the first MOS tube, and a second positioning groove is formed on the second MOS tube; the crimping piece further comprises a first protrusion connected with the first pressing piece and located in the first positioning groove, and a second protrusion connected with the second pressing piece and located in the second positioning groove.