IGBT structure convenient to maintain

Abstract

The utility model relates to an IGBT (Insulated Gate Bipolar Translator) structure convenient to maintain. The IGBT structure comprises a module main body, the plate body is fixedly arranged at the bottom of the module main body; the mounting plate is arranged at the bottom of the plate body and positioned on the equipment surface; a fixing mechanism connected with the mounting plate is mounted at the bottom of the plate body; the fixing mechanism comprises two push rods installed on the two sides of the bottom of the plate body, limiting buckles are installed at one ends of the two push rods through transmission parts, two extrusion rods are pressed to be close to each other at the same time, the extrusion rods drive the push rods to move, and the push rods drive connecting buckles to move in reserved grooves. The limiting buckle drives the rod body to rotate in the fixing frame, so that the bottom of the limiting buckle is separated from the limiting groove in the surface of the mounting plate for clamping and fixing, the module main body can be quickly separated from the mounting plate, and the module main body can be conveniently detached for maintenance treatment; and the limiting buckle is prevented from falling off from the mounting groove.

Description

Technical Field

[0001] The utility model relates to the technical field of IGBT module equipment, in particular to an IGBT structure that is easy to maintain. Background Art

[0002] IGBT (Insulated Gate Bipolar Transistor) is a semiconductor device mainly used in power electronic equipment as a key component for power conversion and circuit control. In the existing technology, IGBT modules are inconvenient to install during use and are also inconvenient to disassemble and maintain after installation, which wastes a lot of time during installation and maintenance.

[0003] For example, the authorized patent document with application number CN202021192924.3 discloses a novel IGBT structure, comprising a semiconductor substrate and at least one cellular structure, the cellular structure comprising: a drift region disposed on one side of the semiconductor substrate; a first trench gate unit and a second trench gate unit disposed on one side of the drift region, the first trench gate unit and the second trench gate unit being provided with a plurality of connection layers, the plurality of connection layers being spaced apart and arranged on the first trench gate unit and the second trench gate unit; wherein a first well region is provided between adjacent sides of the first trench gate unit and the second trench gate unit, a second well region and a first source region are provided on the side of the first trench gate unit away from the second trench gate unit, and a third well region and a second source region are provided on the side of the second trench gate unit away from the first trench gate unit. The utility model can effectively reduce the increase in gate capacitance caused by its structure, thereby effectively reducing its switching loss while maintaining a low on-state voltage drop, and can optimize high-frequency characteristics and broaden its scope of application.

[0004] The above patent has the problem that the IGBT module is not convenient to install during use and is not convenient to disassemble and maintain after installation. Therefore, we need to provide an IGBT structure that is easy to maintain. Utility Model Content

[0005] The purpose of the present utility model is to provide an IGBT structure that is easy to maintain. By pressing two extrusion rods together at the same time, the extrusion rod drives the push rod to move, and the push rod drives the connecting buckle to move in the reserved groove, and the limit buckle drives the rod body to rotate in the fixing frame, so that the bottom of the limit buckle is disengaged from the limit groove on the surface of the mounting plate, and the module body can be quickly separated from the mounting plate, which is convenient for disassembling the module body for maintenance. The reset spring is used to resist the extrusion rod and support the limit buckle to prevent the limit buckle from falling off from the mounting groove, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an IGBT structure that is easy to maintain, comprising:

[0007] Module body;

[0008] and a plate fixedly mounted on the bottom of the module body;

[0009] A mounting plate provided at the bottom of the plate body and located on the surface of the device;

[0010] A fixing mechanism connected to the mounting plate is installed at the bottom of the plate body;

[0011] The fixing mechanism includes two push rods installed on both sides of the bottom of the plate body, one end of the two push rods is installed with a limit buckle through a transmission member, two limit slots are provided on both sides of the mounting plate, the limit buckles are adapted to the limit slots, one end of the two push rods is fixedly installed with an extrusion rod, one side of the extrusion rod is clamped with two return springs, and one end of the two return springs is clamped with a fixing plate.

[0012] Preferably, the transmission member includes a connecting buckle fixedly mounted on one end of the push rod, a reserved groove for the movably sleeved connecting buckle is opened inside the limiting buckle, a rod body is fixedly mounted inside the limiting buckle, a fixing frame is rotatably mounted on the surface of the rod body, and the top of the fixing frame is fixedly mounted on the bottom of the plate body.

[0013] Preferably, the bottom of the limiting buckle is configured as an inclined surface.

[0014] Preferably, the surfaces of the four push rods are movably sleeved with guide seats, and the tops of the four guide seats are fixedly mounted on the bottom of the plate body.

[0015] Preferably, an insertion rod is fixedly mounted on adjacent ends of the two extrusion rods, one end of the insertion rod passes through and extends from the surface of the fixing plate, and the interior of the reset spring is movably sleeved with the surface of the insertion rod.

[0016] Preferably, it further comprises a pushing member for ejecting the module body, wherein the pushing member is packaged with two spring devices installed at the bottom of the plate body, and a push plate is fixedly installed at the lower ends of the two spring devices.

[0017] Preferably, the surfaces of the two extrusion rods are integrally machined with wave grooves.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The utility model realizes quick disassembly between the plate body and the mounting plate through the fixing mechanism, which facilitates the assembly and disassembly operations of the module main body on the top of the plate body and facilitates maintenance of the module main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 It is a three-dimensional diagram of the local structure of the utility model;

[0022] Figure 3 It is a three-dimensional diagram of the transmission component of the present utility model;

[0023] Figure 4 This is a three-dimensional diagram of the pusher of the present utility model.

[0024] In the figure: 1. Module body; 2. Plate body; 3. Mounting plate; 4. Fixing mechanism; 41. Push rod; 42. Limiting buckle; 43. Limiting groove; 44. Extrusion rod; 45. Return spring; 46. Fixing plate; 40. Transmission part; 401. Connecting buckle; 402. Reserved groove; 403. Rod body; 404. Fixing frame; 5. Guide seat; 6. Insert rod; 7. Pushing member; 71. Spring device; 72. Push plate; 8. Wave groove. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-4 The utility model provides an IGBT structure that is easy to maintain, including a module body 1 and a plate body 2 fixedly installed at the bottom of the module body 1; a mounting plate 3 arranged at the bottom of the plate body 2 and located on the surface of the equipment; and a fixing mechanism 4 connected to the mounting plate 3 is installed at the bottom of the plate body 2.

[0027] The fixing mechanism 4 includes two push rods 41 installed on both sides of the bottom of the plate body 2. One end of the two push rods 41 is installed with a limit buckle 42 through a transmission member 40. Two limit grooves 43 are provided on both sides of the mounting plate 3. The limit buckles 42 are adapted to the limit grooves 43. An extrusion rod 44 is fixedly installed on one end of the two push rods 41. Two return springs 45 are clamped on one side of the extrusion rod 44. One end of the two return springs 45 is clamped on a fixing plate 46.

[0028] The transmission member 40 includes a connecting buckle 401 fixedly mounted on one end of the push rod 41, a reserved groove 402 for the movable sleeve of the connecting buckle 401 is opened inside the limiting buckle 42, a rod body 403 is fixedly mounted inside the limiting buckle 42, a fixing frame 404 is rotatably mounted on the surface of the rod body 403, and the top of the fixing frame 404 is fixedly mounted on the bottom of the plate body 2.

[0029] In this embodiment, by pressing the two extrusion rods 44 together at the same time, the extrusion rod 44 drives the push rod 41 to move, and the push rod 41 drives the connecting buckle 401 to move in the reserved groove 402, and realizes that the limit buckle 42 drives the rod body 403 to rotate in the fixing frame 404, so that the bottom of the limit buckle 42 is disengaged from the limit groove 43 on the surface of the mounting plate 3, and the module body 1 can be quickly separated from the mounting plate 3, which is convenient for disassembling the module body 1 for maintenance. The reset spring 45 is used to resist the extrusion rod 44 and support the limit buckle 42 to prevent the limit buckle 42 from falling off from the mounting groove. The module body 1 is an IGBT module.

[0030] The bottom of the limiting buckle 42 is configured as an inclined surface;

[0031] Specifically, the bottom of the limiting buckle 42 is set as an inclined surface, which is convenient for directly fixing the plate body 2 on the mounting plate 3. The inclined surface at the bottom of the limiting buckle 42 contacts the mounting plate 3 to realize the rotation of the limiting buckle 42 without pushing the two extrusion rods 44.

[0032] The surfaces of the four push rods 41 are movably sleeved with guide seats 5 , and the tops of the four guide seats 5 are fixedly mounted on the bottom of the plate body 2 .

[0033] A guide seat 5 is provided on the surface of the push rod 41 for adjusting the directional movement of the push rod 41 .

[0034] An insertion rod 6 is fixedly mounted on adjacent ends of the two extrusion rods 44 . One end of the insertion rod 6 extends through the surface of the fixing plate 46 . The interior of the return spring 45 is movably sleeved with the surface of the insertion rod 6 .

[0035] It is worth noting that the insertion rod 6 is provided to protect the return spring 45 and prevent the return spring 45 from bending, while also providing directional conveyance for the extrusion rod 44 .

[0036] The present invention further comprises a pushing member 7 for ejecting the module body 1 . The pushing member 7 is packaged with two spring devices 71 installed at the bottom of the plate body 2 . A push plate 72 is fixedly installed at the lower end of the two spring devices 71 .

[0037] When the plate body 2 is connected to the mounting plate 3 , the push plate 72 fits against the mounting plate 3 and squeezes the two springs 71 . When the plate body 2 is separated from the mounting plate 3 , the push member 7 acts to eject the mounting plate 3 .

[0038] The surfaces of the two extrusion rods 44 are both integrally processed with wave grooves 8 to enhance the friction force when the extrusion rods 44 are moved.

[0039] This device simultaneously presses the two extrusion rods 44 close to each other, the extrusion rod 44 drives the push rod 41 to move, and the push rod 41 drives the connecting buckle 401 to move in the reserved groove 402, and realizes that the limit buckle 42 drives the rod body 403 to rotate in the fixing frame 404, so that the bottom of the limit buckle 42 is disengaged from the limit groove 43 on the surface of the mounting plate 3, and the module body 1 can be quickly separated from the mounting plate 3, which is convenient for disassembling the module body 1 for maintenance. The reset spring 45 is used to resist the extrusion rod 44 and support the limit buckle 42 to prevent the limit buckle 42 from falling off from the mounting groove.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An IGBT structure that is easy to maintain, characterized in that: include: Module body (1); and a plate (2) fixedly mounted on the bottom of the module body (1); A mounting plate (3) is provided at the bottom of the plate body (2) and is located on the surface of the device; A fixing mechanism (4) connected to the mounting plate (3) is installed at the bottom of the plate body (2); The fixing mechanism (4) comprises two push rods (41) mounted on both sides of the bottom of the plate body (2), one end of each of the two push rods (41) is mounted with a limit buckle (42) through a transmission member (40), two limit slots (43) are provided on both sides of the mounting plate (3), the limit buckle (42) is adapted to the limit slot (43), one end of each of the two push rods (41) is fixedly mounted with an extrusion rod (44), one side of each of the extrusion rods (44) is clamped with two return springs (45), and one end of each of the two return springs (45) is clamped with a fixing plate (46).

2. The IGBT structure easy to maintain according to claim 1, characterized in that: The transmission member (40) includes a connecting buckle (401) fixedly mounted on one end of the push rod (41); a reserved groove (402) for the connecting buckle (401) to be movably sleeved is provided inside the limiting buckle (42); a rod body (403) is fixedly mounted inside the limiting buckle (42); a fixing frame (404) is rotatably mounted on the surface of the rod body (403); and the top of the fixing frame (404) is fixedly mounted on the bottom of the plate body (2).

3. The IGBT structure easy to maintain according to claim 2, characterized in that: The bottom of the position-limiting buckle (42) is arranged in an inclined plane.

4. The IGBT structure easy to maintain according to claim 3, characterized in that: The surfaces of the four push rods (41) are all movably sleeved with guide seats (5), and the tops of the four guide seats (5) are all fixedly mounted on the bottom of the plate body (2).

5. The IGBT structure easy to maintain according to claim 1, characterized in that: An insertion rod (6) is fixedly mounted on the adjacent ends of the two extrusion rods (44), one end of the insertion rod (6) passes through the surface of the fixed plate (46) and extends, and the interior of the return spring (45) is movably sleeved with the surface of the insertion rod (6).

6. The IGBT structure easy to maintain according to claim 1, characterized in that: It also includes a pusher (7) for ejecting the module body (1), wherein the pusher (7) is packaged with two spring devices (71) installed at the bottom of the plate body (2), and a push plate (72) is fixedly installed at the lower ends of the two spring devices (71).

7. The IGBT structure easy to maintain according to claim 1, characterized in that: The surfaces of the two extrusion rods (44) are both integrally processed with wave grooves (8).

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