CN211629101U

CN211629101U - Power transistor with protective housing structure

Info

Publication number: CN211629101U
Application number: CN202020891758.XU
Authority: CN
Inventors: 卢润田
Original assignee: Shanghai Runzhang Intelligent Technology Co ltd
Current assignee: Shanghai Runzhang Intelligent Technology Co ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2020-10-02
Anticipated expiration: 2030-05-25

Abstract

The utility model discloses a power transistor with protective housing structure, including the heat conduction silica gel shell, the inner wall of heat conduction silica gel shell and five faces fixed connection of transistor body, the outer wall of heat conduction silica gel shell and the inner wall fixed connection of heat conduction metal-back, the outer wall of heat conduction metal-back bonds and has a plurality of anticollision strips, the three output of transistor body bottom respectively with the input fixed connection of connector, the output of connector respectively with the input block connection of L type pin, the utility model relates to a power transistor with protective housing structure, the heat that distributes after the transistor body work is absorbed by the heat conduction silica gel shell and is conducted for the heat conduction metal-back and external replacement; the heat-conducting metal shell is bonded with an anti-collision strip to prevent external impact; the outer wall of the fixing frame is fixedly connected with an insulating sleeve, so that the bolt is prevented from being electrified; the connector cooperates with the block of L type pin for L type pin can be dismantled, convenient the change.

Description

Power transistor with protective housing structure

Technical Field

The utility model relates to a power transistor technical field specifically is a power transistor with protective housing structure.

Background

The power transistor is a semiconductor device for controlling current, can amplify a weak signal into an electric signal with a large amplitude value, has a current amplification effect, and is a core element of an electronic circuit. The existing encapsulation transistor can not carry out anti-collision protection on the encapsulation transistor body, so that the applicable environment of the encapsulation transistor is limited; when the pin of the transistor is used, the pin is too long and is easy to break and damage due to the channel for connecting the power transistor and the electric element; meanwhile, the power transistors on the market are usually directly and fixedly arranged on the radiating fins through bolts, and the bolts are metal pieces, so that the back surfaces of the power transistors are directly contacted with the connecting pieces, the bolts are electrified, and potential safety hazards exist, and therefore the power transistors with the protective shell structure are provided.

Disclosure of Invention

An object of the utility model is to provide a power transistor with protective housing structure to solve the current power transistor antivibration effect that proposes in the above-mentioned background art poor, do not have the thermal diffusivity, and with the electrified problem of fin fixed mounting back bolt.

In order to achieve the above object, the utility model provides a following technical scheme: a power transistor with a protective shell structure comprises a transistor body, a heat-conducting silica gel shell and a fixed sealing cover, the inner wall of the heat-conducting silica gel shell is fixedly connected with five surfaces of the transistor body, the outer wall of the heat-conducting silica gel shell is fixedly connected with the inner wall of the heat-conducting metal shell, a plurality of anti-collision strips are bonded on the outer wall of the heat-conducting metal shell, one side of the heat-conducting metal shell is fixedly connected with one end of the fixing frame, the other end of the fixing frame is provided with a through hole, the outer wall of the fixing frame is fixedly connected with an insulating sleeve, a plurality of output ends at the bottom of the transistor body are respectively and fixedly connected with the input end of the connector, the top of the connector is provided with a connector, the connector is connected with the input end of the L-shaped pin in a clamping mode, the fixed end sleeve of the connector is connected with the fixed end sleeve of the fixed sealing cover in a sleeved mode, and the L-shaped pin is inserted into the middle of the fixed sealing cover in a penetrating mode.

As an optimized technical scheme of the utility model, the stiff end of fixed sealed lid cooperatees with the stiff end of connector.

As an optimal technical scheme of the utility model, the encapsulation colloid encapsulation is passed through to the bottom of transistor body, just transistor body bottom fixed mounting has waterproof pad.

As an optimized technical solution of the present invention, the connector is inserted and extended outside the encapsulant.

As an optimized technical scheme of the utility model, the inside fixed mounting of connector has the elastic metal piece.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through bonding the anticollision strip on the outer wall at heat conduction metal-back for power transistor's outer wall increases one deck buffer space, and when external environment changed and extrudeed the collision to power transistor, the anticollision strip can protect power transistor.

2. Five faces of transistor body link to each other with heat conduction silica gel shell, and heat conduction silica gel sheet shell heat conduction metal-back links to each other, can absorb the heat of transistor body through heat conduction silica gel shell to the heat conduction metal-back is given in the conduction, thereby heat conduction metal-back absorbs and replaces with the external world again and reach for the radiating effect of transistor body.

3. The power transistor is usually directly fixedly mounted on the heat sink through a bolt, the back of the power transistor is directly contacted with the connecting piece due to the fact that the bolt is a metal piece, the bolt is electrified, the bolt is directly contacted with the insulating pad through a mode that the insulating pad is connected to the mounting plate, and the purpose of insulation is achieved.

4. Through joining in marriage of L type pin, connector and fixed sealed lid, reach the removable purpose of L pin, the fixed sealed lid of reuse is fixed after the one end of L type pin inserts the connector, reaches stable effect, and when L type pin damaged because the external reason, we can change through taking off the L type pin of damage to reduce cost.

Drawings

Fig. 1 is a schematic structural diagram of a power transistor with a protective casing structure according to the present invention;

fig. 2 is a cross-sectional view of a power transistor with a protective housing structure according to the present invention;

fig. 3 is a schematic structural diagram of a power transistor housing with a protective housing structure according to the present invention;

FIG. 4 is a schematic structural diagram of a fixed sealing cover of a power transistor with a protective casing structure according to the present invention,

fig. 5 is a schematic structural diagram of an L-shaped pin and a connector of a power transistor with a protective housing structure according to the present invention.

In the figure: 1. a connector; 2. a fixed mount; 3. packaging the colloid; 4. a pin; 5. a through hole; 6. a transistor body; 7. a waterproof pad; 8. a thermally conductive metal shell; 9. an anti-collision strip; 10. a heat-conducting silica gel shell; 11. an insulating sleeve; 12. fixing the sealing cover; 13. a connecting port; 14. an elastic metal sheet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a power transistor with a protective housing structure, which comprises a transistor body 6, a heat conductive silicone shell 10, a fixed sealing cover 12, wherein the inner wall of the heat conductive silicone shell 10 is fixedly connected with five surfaces of the transistor body 6, the outer wall of the heat conductive silicone shell 10 is fixedly connected with the inner wall of a heat conductive metal shell 8, the outer wall of the heat conductive metal shell 8 is adhered with a plurality of anti-collision strips 9, one side of the heat conductive metal shell 8 is fixedly connected with one end of a fixing frame 2, the other end of the fixing frame 2 is provided with a through hole 5, the outer wall of the fixing frame 2 is fixedly connected with an insulating sleeve 11, a plurality of output ends at the bottom of the transistor body 6 are respectively fixedly connected with an input end of a connector 1, the top of the connector 1 is provided with a connector 13, the connector 13 is connected with an input end of an L-shaped pin 4, and the L-shaped pins 4 are inserted and fixed in the middle of the sealing cover 12.

Preferably, the fixed end of the fixed sealing cover 12 is matched with the fixed end of the connector 1 to stabilize the pin 4. The bottom of the transistor body 6 is packaged by the packaging colloid 3, and the waterproof pad 7 is fixedly mounted at the bottom of the transistor body 6 so as to achieve the waterproof effect of the transistor body 6. The connector 1 is inserted and extends out of the packaging colloid 3, so that the connection of the input end of the L-shaped pin 4 is facilitated. The elastic metal piece 14 is fixedly mounted inside the connecting port 13, so that the mounting of the L-shaped pin 4 is prevented from being stable.

When the power transistor with the protective shell structure is used, the heat emitted after the transistor body 6 works is absorbed by the heat-conducting silica gel shell 10 and is conducted to the heat-conducting metal shell 8, and the heat-conducting metal shell 8 is absorbed and then is replaced with the outside heat, so that the purpose of overall cooling is achieved; meanwhile, the anti-collision strip 9 is bonded on the heat-conducting metal shell 8, and when the external environment changes and extrudes or collides the transistor, the application of the anti-collision strip 9 increases a layer of buffer space on the outer wall of the power transistor to prevent external impact; the outer wall of the fixing frame 2 is fixedly connected with an insulating sleeve 11, and when the fixing frame is fixed by using a metal bolt, the metal bolt is not directly contacted with other metals due to the action of the insulating sleeve 11, so that the bolt is prevented from being electrified; after the output end at the bottom of the transistor body 6 is fixedly connected with the input end of the connector 1, the connector 1 is connected with the L-shaped pin 4 in a clamping manner, so that the L-shaped pin 4 can be detached and is convenient to replace.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A power transistor with a protective shell structure comprises a transistor body (6), a heat-conducting silica gel shell (10) and a fixed sealing cover (12), and is characterized in that the inner wall of the heat-conducting silica gel shell (10) is fixedly connected with five surfaces of the transistor body (6), the outer wall of the heat-conducting silica gel shell (10) is fixedly connected with the inner wall of a heat-conducting metal shell (8), a plurality of anti-collision strips (9) are bonded on the outer wall of the heat-conducting metal shell (8), one side of the heat-conducting metal shell (8) is fixedly connected with one end of a fixing frame (2), a through hole (5) is formed in the other end of the fixing frame (2), an insulating sleeve (11) is fixedly connected with the outer wall of the fixing frame (2), a plurality of output ends at the bottom of the transistor body (6) are respectively fixedly connected with the input end of a connector (1), a connector (13) is formed, the connector (13) is connected with the input end of the L-shaped pin (4) in a clamping mode, the fixed end sleeve of the connector (1) is connected with the fixed end sleeve of the fixed sealing cover (12) in a sleeved mode, and the L-shaped pin (4) penetrates through the middle of the fixed sealing cover (12).

2. The power transistor with the protective casing structure of claim 1, wherein: the fixed end of the fixed sealing cover (12) is matched with the fixed end of the connector (1).

3. The power transistor with the protective casing structure of claim 1, wherein: the bottom of the transistor body (6) is packaged through a packaging colloid (3), and a waterproof pad (7) is fixedly mounted at the bottom of the transistor body (6).

4. The power transistor with the protective casing structure of claim 1, wherein: the connector (1) is inserted and extends out of the packaging colloid (3).

5. The power transistor with the protective casing structure of claim 1, wherein: and an elastic metal sheet (14) is fixedly arranged in the connecting port (13).