Groove type MOSFET device

Abstract

The utility model discloses a groove type MOSFET device comprising a device box, the outer wall of the device box is provided with a grid electrode, the bottom of the device box is provided with two heat dissipation grooves, the upper end face of the device box is provided with a sealing cover plate, and the upper end face of the sealing cover plate is fixedly connected with a push plate. Disassembly assemblies are arranged on the positions, located on the two sides of the sealing cover plate, of the upper end face of the device box correspondingly, each disassembly assembly comprises two limiting boxes, a guide frame and a positioning block, and the limiting boxes are both fixedly connected to the upper end of the device box; mounting grooves are formed in the two limiting boxes, two guide sliding plates are arranged in each mounting groove, electronic elements are arranged in the device box, guide frames are slidably connected to the outer walls of the two guide sliding plates, pull rods are fixedly arranged at the upper ends of the two guide frames, and the sizes of the two guide frames are the same; the MOSFET device box can be quickly disassembled and assembled, internal electronic elements can be maintained, and practicability is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to MOSFET device technical field, in particular to a kind of trench MOSFET devices. BACKGROUND

[0002] Trench MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) is a kind of power semiconductor device. It uses electric field effect to control the current in semiconductor, and is widely used in power management, motor drive and other fields in modern electronic equipment.

[0003] The prior art patent with publication number CN221079996U proposes a trench MOSFET device, which comprises a MOSFET tube body, the MOSFET tube body includes a packaging shell and a pin arranged at one end of the packaging shell, a protective sleeve is arranged outside the packaging shell, a rectangular clamping groove is arranged outside one side of the protective sleeve, and a detachable clamping plate is arranged at the rectangular clamping groove of the protective sleeve.

[0004] Although the above-mentioned MOSFET device uses the structure composed of protective sleeve and clamping plate to protect the pin, it does not have the function of quickly disassembling and repairing the MOSFET device when internal short circuit damage occurs. The existing MOSFET device is often fixed by bolts, which is relatively cumbersome and time-consuming to disassemble and maintain. It is not convenient to operate and maintain the MOSFET device. In view of the above problems, a trench MOSFET device is improved and upgraded. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of trench MOSFET device to solve the problems raised in the above background.

[0006] To solve the above problems, the following technical solutions are provided:

[0007] A trench MOSFET device is designed, which comprises a device box, the device box is provided with a gate on the outer wall, and two heat dissipation grooves are formed in the bottom of the device box, a sealing cover plate is arranged on the upper end surface of the device box, and a push plate is fixedly connected to the upper end surface of the sealing cover plate, a disassembly assembly is arranged on both sides of the sealing cover plate on the upper end surface of the device box, the disassembly assembly comprises a limiting box, a guide frame and a positioning block, two limiting boxes are arranged, and the limiting boxes are fixedly connected to the upper end of the device box, an installation groove is formed in the interior of each limiting box, and two guide slides are arranged in the interior of the installation groove, and electronic components are arranged in the interior of the device box.

[0008] Further, the outer wall of the two guide sliding plates is slidably connected with a guide frame, and the upper end of the guide frame is fixedly provided with a pull rod.

[0009] Further, the inside of the limiting box between the two guide sliding plates is fixedly provided with a mounting seat, the outer wall of the mounting seat is fixedly provided with two damping rods, and the outer wall of the damping rod is sleeved with a return spring.

[0010] Further, one end of the two damping rods is connected to the outer wall of the guide frame, the outer wall of the guide frame is fixedly provided with a plug-in connector, and one end of the plug-in connector penetrates into the inside of the limiting box.

[0011] Further, the number of the positioning blocks is two, and the inside of the two positioning blocks is provided with a clamping groove, and the size of the plug-in connector and the clamping groove is matched.

[0012] Further, the inner wall of the device box is fixedly provided with a mounting block at four corners, the bottom of the sealing cover plate is provided with a plug rod at four corners, the plug rod is clamped on the mounting block, and the sealing cover plate is provided with a sliding block between the plug rods, and the sliding block is slidably connected to the inside of the device box.

[0013] Compared with the prior art, the device has the advantages that:

[0014] 1. The device is provided with guide frames, positioning blocks, guide sliding plates, damping rods, return springs, plug-in connectors and sealing cover plates, and the pull rod is manually actuated to drive the guide frame to slide on the two guide sliding plates, the guide frame is moved while the rear side of the guide frame extrudes the return spring on the damping rod, the plug-in connector on the guide frame is dislocated from the clamping groove on the positioning block, then the sealing cover plate is pulled to drive the sliding block to slide out of the device box, the sealing cover plate is pulled out of the mounting block by the plug rod, and vice versa, which is convenient for installation and maintenance of the MOSFET device box and internal electronic components, avoids the problems of difficult disassembly caused by bolt fixation, saves time and effort, and is convenient to operate.

[0015] The specific embodiments of the device are disclosed in detail in the following description and drawings, and the principles of the device can be adopted. It should be understood that the embodiments of the device are not limited in scope. The embodiments of the device include many changes, modifications and equivalents within the spirit and scope of the appended claims. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the device, and constitute a part of the specification. They are used to explain the device together with the embodiments of the device, and do not constitute a limitation on the device. In the drawings:

[0017] Figure 1 A trench type MOSFET device overall structure schematic view of the utility model;

[0018] Figure 2 A trench type MOSFET device overall split structure schematic view of the utility model;

[0019] Figure 3 For Figure 2 Place rear side structure schematic view;

[0020] Figure 4 For Figure 3 Place local amplification split structure schematic view.

[0021] In the figure: 1, device box;2, gate;3, heat sink groove;4, disassembly assembly;41, limit box;42, positioning block;421, clamping groove;43, guide frame;44, guide slide plate;45, pull rod;46, mounting seat;47, damping rod;48, return spring;49, plug;5, push plate;51, sliding block;52, plug rod;53, mounting block;6, sealing cover plate;7, electronic component. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0023] As Figure 1 - Figure 4 As shown in the figure, the design of a trench type MOSFET device provided by the embodiment includes device box 1, the outer wall of device box 1 is provided with gate 2, and two heat sink grooves 3 are opened at the bottom of device box 1, the upper end surface of device box 1 is provided with sealing cover plate 6, and push plate 5 is fixedly connected to the upper end surface of sealing cover plate 6, disassembly assembly 4 is arranged on both sides of sealing cover plate 6 on the upper end surface of device box 1, disassembly assembly 4 includes limit box 41, guide frame 43 and positioning block 42, two limit boxes 41 are arranged, and the two limit boxes 41 are fixedly connected to the upper end of device box 1, mounting grooves are opened in the interiors of the two limit boxes 41, and two guide slide plates 44 are arranged in the interiors of the mounting grooves, and electronic component 7 is arranged in the interior of device box 1.

[0024] Preferably, the outer wall of the two groups of guide sliding plates 44 is slidably connected with a guide frame 43, the upper end of the two guide frames 43 is fixedly provided with a pull rod 45, the two guide frames 43 are the same in size, a mounting seat 46 is fixedly arranged in the inside of the limiting box 41 between the two guide sliding plates 44, two damping rods 47 are fixedly installed on the outer wall of the mounting seat 46 and are sleeved with a reset spring 48, one end of the two damping rods 47 is connected to the outer wall of the guide frame 43, the outer wall of the guide frame 43 is fixedly provided with a plug-in connector 49, and one end of the plug-in connector 49 penetrates into the inside of the limiting box 41, so that the plug-in connector 49 and the clamping groove 421 on the positioning block 42 are clamped with each other.

[0025] Preferably, the number of the positioning blocks 42 is two, and the inside of each positioning block 42 is provided with a clamping groove 421, the size of the plug-in connector 49 and the clamping groove 421 is matched, mounting blocks 53 are fixedly arranged at the four corners of the inner wall of the device box 1, plug rods 52 are arranged at the four corners of the bottom of the sealing cover plate 6 and are clamped on the mounting blocks 53, and a sliding block 51 is arranged between the plug rods 52 and is slidably connected in the inside of the device box 1, so that the MOSFET device is relatively fastened during installation.

[0026] The use principle and use process of the utility model are as follows: when the internal electronic element 7 of the MOSFET device is short-circuited and damaged, at this time, the staff moves the pull rod 45 on the two limiting boxes 41 backward by manual operation, so that the pull rod 45 drives the guide frame 43 to slide and limit on the two guide sliding plates 44, the guide frame 43 is pressed on the reset spring 48 on the damping rod 47 at the rear side during movement, so that the guide frame 43 is conveniently reset after movement, the plug-in connector 49 on the guide frame 43 is dislocated from the clamping groove 421 on the positioning block 42, then the sealing cover plate 6 is slid out of the device box 1 by the sliding block 51 driven by the pull plate 5, so that the sealing cover plate 6 is pulled out of the mounting block 53 by the plug rod 52, the sealing cover plate 6 is conveniently and quickly disassembled for maintenance of the internal electronic element 7, and vice versa, the sealing cover plate 6 is quickly installed, and the operation is convenient.

[0027] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "installation", "provided with", "connection" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through an intermediate medium, and can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific situation.

[0028] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second" are only used to distinguish in description, and have no special meaning.

Claims

1. A trench MOSFET device characterized by, Including device box (1), the outer wall of device box (1) is provided with gate (2) and the bottom of device box (1) is provided with two heat dissipation grooves (3), the upper end surface of device box (1) is provided with sealing cover plate (6) and the upper end surface of sealing cover plate (6) is fixedly connected with push plate (5), the upper end surface of device box (1) is provided with disassembly assembly (4) on both sides of sealing cover plate (6), the disassembly assembly (4) contains limiting box (41), guide frame (43) and positioning block (42), the limiting box (41) is provided with two and the limiting box (41) is fixedly connected on the upper end of device box (1), the inside of two limiting boxes (41) is provided with mounting groove and the inside of mounting groove is provided with two guide sliding plates (44), the inside of device box (1) is provided with electronic element (7).

2. The trench MOSFET device of claim 1, wherein, The outer wall of two guide sliding plates (44) is slidably connected with guide frame (43), the upper end of two guide frames (43) is fixedly provided with pull rod (45) and the size of two guide frames (43) is same.

3. The trench MOSFET device of claim 2, wherein, The inside of limiting box (41) is fixedly provided with mounting seat (46) between two guide sliding plates (44), the outer wall of mounting seat (46) is fixedly provided with two damping rods (47) and the outer wall of damping rod (47) is provided with reset spring (48).

4. The trench MOSFET device of claim 3, wherein, One end of two damping rods (47) is connected to the outer wall of guide frame (43), the outer wall of guide frame (43) is fixedly provided with plug (49) and one end of plug (49) penetrates the inside of limiting box (41).

5. The trench MOSFET device of claim 4, wherein, The number of positioning block (42) is provided with two and the inside of two positioning blocks (42) is provided with clamping groove (421), the size of plug (49) and clamping groove (421) is adapted.

6. The trench MOSFET device of claim 1, wherein, The inner wall of device box (1) is fixedly provided with mounting block (53) at four corners, the bottom of sealing cover plate (6) is provided with plug rod (52) at four corners and plug rod (52) is clamped on mounting block (53), the sealing cover plate (6) is provided with sliding block (51) between plug rod (52) and sliding block (51) is slidably connected in the inside of device box (1).

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