CN218677125U

CN218677125U - MOSFET device for driving electric tool

Info

Publication number: CN218677125U
Application number: CN202222015666.7U
Authority: CN
Inventors: 张海民
Original assignee: Jiangsu Donghai Semiconductor Co ltd
Current assignee: Jiangsu Donghai Semiconductor Co ltd
Priority date: 2022-07-31
Filing date: 2022-07-31
Publication date: 2023-03-21
Anticipated expiration: 2032-07-31

Abstract

The utility model relates to the technical field of MOSFET devices, and discloses a MOSFET device for driving an electric tool, which comprises a MOSFET device body and a circuit board body, wherein the top of the MOSFET device body is provided with a graphene layer, the top of the graphene layer is fixed with a top plate, the left side and the right side of the MOSFET device body are both fixed with fixing rods, the top of the circuit board body is fixed with a fixing shell, the top of the circuit board body is provided with a bottom groove, the top of the bottom groove penetrates through the inside of the fixing shell, the top of the bottom groove is provided with a through groove, the through groove penetrates through the bottom groove, and the surface of the fixing shell is provided with a U-shaped groove; the utility model discloses can remove the stopper through the compression of spring to make the MOSFET device can fix on the circuit board, make being connected between MOSFET device and the circuit board inseparabler, can not produce the offset under long-term the use yet, graphite alkene layer can dispel the heat to the MOSFET device simultaneously, makes the temperature of MOSFET device can not too high.

Description

MOSFET device for driving electric tool

Technical Field

The utility model relates to a MOSFET device technical field specifically is a MOSFET device is used in electric tool drive.

Background

A metal-oxide semiconductor field effect transistor, abbreviated as a metal-oxide semiconductor field effect transistor (MOSFET), is a field effect transistor that can be widely used in analog circuits and digital circuits, and can be classified into two types of "N-type" and "P-type" according to the polarity of its "channel" (working carrier), also commonly called as NMOSFET and PMOSFET, and others abbreviated as NMOS, PMOS, etc., and a power tool is a tool whose actuation is performed by an additional power source and mechanism than by other manual labor and by hand tools. Most common types of power tools use electric motors, and the drive circuitry of the power tool can often use MOSFET devices.

At present, when the MOSFET device is installed, a part of the MOSFET device is directly installed on a circuit board, so that after installation, when the electric tool shakes or moves in the using process, the stability of the MOSFET device can be reduced, after long-term use, the MOSFET device can generate position deviation, the connection part is not tight enough, poor contact of the MOSFET device is caused, heat can be generated in the using process of the MOSFET device, and if heat can not be dissipated timely, the MOSFET device is overheated, and the problem that the internal construction of the MOSFET device is damaged is caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric tool drives and uses MOSFET device, this MOSFET device can remove the stopper through the compression of spring to make the MOSFET device can fix on the circuit board, make being connected between MOSFET device and the circuit board inseparabler, also can not produce the offset under long-term the use.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a MOSFET device for electric tool drive, includes MOSFET device body and circuit board body, the top of MOSFET device body is provided with graphite alkene layer, graphite alkene layer's top is fixed with the roof, the left and right sides of MOSFET device body all is fixed with the dead lever, circuit board body's top is fixed with the set casing, the kerve has been seted up at circuit board body's top, the inside of set casing is run through at the top of kerve, logical groove has been seted up at the top of kerve, it runs through the kerve to lead to the groove, U type groove has been seted up on the surface of set casing, the inner wall and the swing joint in dead lever and U type groove, one side that the dead lever was kept away from to the inner chamber of set casing is fixed with the spring, the one end that the set casing inner wall was kept away from to the spring is fixed with the baffle, one side that the baffle was kept away from to the baffle is fixed with the inner wall that runs through to U type groove, the stopper and the department sliding connection that runs through of set casing, the bottom of baffle is fixed with the connecting rod, the top of connecting rod is fixed with stirring the board, the top of stirring board runs through the top of stirring board.

Preferably, a limiting plate is fixed below the spring, a sliding groove is formed in the surface of the limiting plate, the limiting plate penetrates through the bottom of the baffle, and the sliding groove is in sliding connection with the limiting plate.

Preferably, the bottom of the graphene layer is coated with heat dissipation silicone grease, and the bottom of the heat dissipation silicone grease is connected with the MOSFET device body.

Preferably, the length of the through groove is the same as that of the limiting block.

Preferably, the left side and the right side of the MOSFET device body are both provided with fixing grooves, and the tops of the fixing grooves are arranged in an arc shape.

Preferably, the top of the limiting block is designed in a wedge shape.

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

the utility model discloses a compression of spring removes the stopper to make the MOSFET device can fix on the circuit board, make and be connected more inseparabler between MOSFET device and the circuit board, can not produce the offset under long-term the use yet, graphite alkene layer can dispel the heat to the MOSFET device simultaneously, the temperature that makes the MOSFET device can not be too high, the MOSFET device of having solved present part is not inseparable enough with being connected between the circuit board, long-term the use MOSFET device can take place the offset, lead to the problem of MOSFET device contact failure.

Drawings

FIG. 1 is a schematic diagram of a middle three-dimensional structure of the present invention;

fig. 2 is a schematic left-side sectional structure of the present invention;

fig. 3 is a schematic front view of the cross-sectional structure of the present invention;

fig. 4 is a schematic view of the turning structure of the middle top plate of the present invention;

fig. 5 is a schematic view of a partial three-dimensional structure in the present invention.

In the figure: 1. a MOSFET device body; 2. a circuit board body; 3. a graphene layer; 4. a top plate; 5. heat dissipation silicone grease; 6. a bottom groove; 7. a stationary case; 8. fixing the rod; 9. a U-shaped groove; 10. a through groove; 11. a spring; 12. a baffle plate; 13. a limiting block; 14. a connecting rod; 15. a poking plate; 16. a limiting plate; 17. fixing grooves; 18. a sliding groove.

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, a MOSFET device for driving an electric tool includes a MOSFET device body 1 and a circuit board body 2, a graphene layer 3 is disposed on a top of the MOSFET device body 1, a top plate 4 is fixed on a top of the graphene layer 3, fixing rods 8 are fixed on left and right sides of the MOSFET device body 1, a fixing case 7 is fixed on a top of the circuit board body 2, a bottom groove 6 is disposed on a top of the circuit board body 2, a top of the bottom groove 6 penetrates through the fixing case 7, a through groove 10 is disposed on a top of the bottom groove 6, the through groove 10 penetrates through the bottom groove 6, a U-shaped groove 9 is disposed on a surface of the fixing case 7, the fixing rods 8 are movably connected with an inner wall of the U-shaped groove 9, a spring 11 is fixed on a side of an inner cavity of the fixing case 7 away from the fixing rods 8, a baffle 12 is fixed on an end of the spring 11 away from the inner wall of the fixing case 7, a stopper 13 is fixed on a side of the baffle 12 away from the spring 11, one side that stopper 13 kept away from baffle 12 runs through to the inner wall of U type groove 9, stopper 13 and the department sliding connection that runs through of set casing 7, the bottom of baffle 12 is fixed with connecting rod 14, the top of connecting rod 14 is fixed with dials movable plate 15, it runs through logical groove 10 to dial the top of movable plate 15, this MOSFET device can remove stopper 13 through the compression of spring 11, thereby make the MOSFET device fix on the circuit board, it is inseparabler to make being connected between MOSFET device and the circuit board, can not produce the position skew under long-term use yet, graphite alkene layer 3 can dispel the heat to the MOSFET device simultaneously, make the temperature of MOSFET device can not be too high, it is inseparable to have solved present partial MOSFET device and be connected between the circuit board, the position skew can take place for long-term use the MOSFET device, lead to MOSFET device contact failure's problem.

Spring 11's below is fixed with limiting plate 16, and sliding tray 18 has been seted up on limiting plate 16's surface, and limiting plate 16 is run through to the bottom of baffle 12, sliding tray 18 and limiting plate 16 sliding connection, and in this embodiment, setting through limiting plate 16 and sliding tray 18 can make spring 11's activity space diminish, prevents spring 11 and controls the swing in compression process, and leads to the spring 11 compression incomplete.

The bottom of graphite alkene layer 3 scribbles heat dissipation silicone grease 5, and the bottom of heat dissipation silicone grease 5 is connected with MOSFET device body 1, and in this embodiment, through the setting of heat dissipation silicone grease 5, can be connected graphite alkene layer 3 and MOSFET device body 1, prevent not steady enough of graphite alkene layer 3 connection for leading to droing, heat dissipation silicone grease 5 also can assist graphite alkene layer 3 to dispel the heat simultaneously, further promotion graphite alkene layer 3's radiating strength.

The length of logical groove 10 is the same with the length of stopper 13, and in this embodiment, through this kind of setting, can make stopper 13 can be complete when removing toggle plate 15 enter into the inner chamber of stationary housing 7, prevent that stopper 13 from getting into thoroughly and leading to dead lever 8 can not take out from U type groove 9.

Fixed slot 17 has all been seted up to the left and right sides of MOSFET device body 1, and the top of fixed slot 17 is the arc setting, and in this embodiment, through the setting of fixed slot 17, can provide effectual application of force point when MOSFET device body 1 is extracted to the staff, makes things convenient for the staff to dismantle MOSFET device body 1.

The top of stopper 13 is the wedge design, and in this embodiment, through this kind of setting, can be directly exert pressure to MOSFET device body 1 and just can go into U type groove 9 with dead lever 8 card, make things convenient for the staff to install MOSFET device body 1.

The working principle is as follows: at first put into the top of circuit board body 2 with MOSFET device body 1, then press MOSFET device body 1, make MOSFET device body 1 insert in circuit board body 2, then dead lever 8 extrudes stopper 13, stopper 13 is the wedge design, then stopper 13 drives baffle 12 and moves to one side of spring 11, then baffle 12 compresses spring 11, simultaneously baffle 12 drives connecting rod 14 of bottom and removes, then connecting rod 14 drives stirring board 15 and removes, when dead lever 8 removes the bottom to U type groove 9, under the effect of spring 11, stopper 13, baffle 12, connecting rod 14 and stirring board 15 return to the original place, spacing dead lever 8, prevent that device body 1 is not stable enough and lead to MOSFET device body 1 and circuit board body 2 bad contact, then scribble heat dissipation silicone grease 5 in the bottom of graphite alkene layer 3, then cover graphite alkene layer 3 at MOSFET device body 1's top, dispel the heat to MOSFET device body 1, when needing to take out, promote stirring board 15, then stirring board 15 drives connecting rod 14 and removes, then connecting rod 14 drives baffle 12 and removes, simultaneously baffle 12 drives baffle 12 and drives the spring 12 and drives stirring board 12 and drives the action and releases the spring 12 and moves the shell under the stopper 15, then the spring 11 moves, then the stopper 14 moves, the spring 14 moves, then the spring 14 moves, the shell is moved to the spring 14 and is moved to the effect of taking out simultaneously, then the stopper 14 and is taken out under the spring 14.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A MOSFET device for driving a power tool, comprising a MOSFET device body (1) and a circuit board body (2), characterized in that: the top of the MOSFET device body (1) is provided with a graphene layer (3), the top of the graphene layer (3) is fixed with a top plate (4), fixing rods (8) are fixed on the left side and the right side of the MOSFET device body (1), a fixing shell (7) is fixed on the top of the circuit board body (2), a bottom groove (6) is formed in the top of the circuit board body (2), the top of the bottom groove (6) penetrates through the inside of the fixing shell (7), a through groove (10) is formed in the top of the bottom groove (6), the through groove (10) penetrates through the bottom groove (6), a U-shaped groove (9) is formed in the surface of the fixing shell (7), the fixing rods (8) and the U-shaped groove (9) are movably connected, a spring (11) is fixed on one side, away from the fixing rods (8), of the inner cavity of the fixing shell (7), a baffle (12) is fixed on one end, away from the inner wall of the fixing shell (7), a limiting block (13) is fixed on one side, away from the baffle (12), and a sliding block (13) is fixed on one side, away from the limiting block (12), and the connecting rod (7) penetrates through the bottom of the fixing shell (7), and the baffle (12) is connected with a sliding block (14), the top of the connecting rod (14) is fixed with a poking plate (15), and the top of the poking plate (15) penetrates through the through groove (10).

2. A power tool driving MOSFET device in accordance with claim 1, wherein: a limiting plate (16) is fixed below the spring (11), a sliding groove (18) is formed in the surface of the limiting plate (16), the limiting plate (16) penetrates through the bottom of the baffle (12), and the sliding groove (18) is in sliding connection with the limiting plate (16).

3. A power tool driving MOSFET device in accordance with claim 1, wherein: the bottom of graphite alkene layer (3) scribbles heat dissipation silicone grease (5), the bottom and the MOSFET device body (1) of heat dissipation silicone grease (5) are connected.

4. A power tool driving MOSFET device in accordance with claim 1, wherein: the length of the through groove (10) is the same as that of the limiting block (13).

5. A power tool driving MOSFET device in accordance with claim 1, wherein: fixed slots (17) are formed in the left side and the right side of the MOSFET device body (1), and the tops of the fixed slots (17) are arranged in an arc shape.

6. A power tool driving MOSFET device in accordance with claim 1, wherein: the top of the limiting block (13) is designed in a wedge shape.