Insulated gate bipolar transistor (IGBT) pressing plate structure with pressurization structure

Abstract

The utility model discloses an IGBT pressure plate structure with a pressurization structure, comprising a fixed pressure plate, the fixed pressure plate is provided with a fixed plate, the fixed pressure plate is provided with a movable pressure plate through an installation port, the movable pressure plate is installed in the installation port through a connection mechanism, the bottom wall of the fixed pressure plate is provided with a storage groove, and the bottom wall of the storage groove is provided with a pressing plate. And a rotating groove is formed in the mounting opening, a vertical screw rod is rotationally arranged in the rotating groove, a pressurizing frame in threaded connection with the vertical screw rod is arranged in the storage groove, and a moving groove is formed in the bottom wall of the movable pressing plate. According to the utility model, the vertical screw rod, the pressurizing frames, the meshing gear, the transverse screw rod, the micro motor, the driving gear and the transmission gear are arranged, and the plurality of pressurizing frames correspond to the concave part of the IGBT, so that descending is realized by virtue of the cooperation of the components, the concave part of the IGBT module can be contacted and extruded, the stability of the IGBT module is ensured, and the practicability of the fixed pressing plate is improved at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of IGBT pressure plates, in particular to an IGBT pressure plate structure with a pressure structure. Background Art

[0002] The IGBT pressure plate is a component used to fix the insulated gate bipolar transistor (IGBT). It is usually used together with other structures to firmly install the IGBT in the corresponding position to ensure that it remains stable during operation. It also helps to dissipate heat, conduct pressure, etc., and plays a certain role in ensuring the normal operation and performance of the IGBT.

[0003] Common IGBT pressure plates are mostly integral pressure plate structures, which are usually made of a piece of integral metal plate and installed by screws or other fixing methods. The integral pressure plate structure is simple and easy to install. However, there are recessed parts on some IGBT modules, and there is a gap between the recessed part and the integral pressure plate. The gap prevents the IGBT module from being squeezed by the integral pressure plate. In order to improve it, an IGBT pressure plate structure with a pressurized structure is proposed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an IGBT pressure plate structure with a pressure structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A pressure plate structure of an IGBT with a pressurizing structure comprises a fixed pressure plate, a fixed plate is provided on the fixed pressure plate, a movable pressure plate is provided on the fixed pressure plate through an installation opening, the movable pressure plate is installed in the installation opening through a connecting mechanism, a receiving groove is provided on the bottom wall of the fixed pressure plate, a rotating groove is provided in the installation opening, a vertical screw is rotatably provided in the rotating groove, a pressure frame threadedly connected to the vertical screw is provided in the receiving groove, a moving groove is provided on the bottom wall of the movable pressure plate, a rotating cavity is provided inside the movable pressure plate, a micro motor is provided in the rotating cavity, a horizontal screw extending into the rotating cavity is provided in the moving groove, a tooth plate is provided on the horizontal screw through a moving block, the tooth plate is connected to the vertical screw through a meshing mechanism, and the horizontal screw is connected to the micro motor through a transmission mechanism.

[0007] Preferably, the connection mechanism comprises a connection plate arranged on the movable pressure plate, the fixed pressure plate is provided with a connection groove corresponding to the installation opening, and the connection plate is installed in the connection groove and the installation opening by connection bolts.

[0008] Preferably, the meshing mechanism comprises a meshing gear arranged on the vertical screw, and the toothed plate meshes with the meshing gear.

[0009] Preferably, the transmission mechanism comprises a driving gear disposed in the rotating cavity and connected to the output shaft of the micro motor, a transmission gear is mounted on the transverse screw, and the driving gear meshes with the transmission gear.

[0010] Preferably, the vertical cross-section of the pressure frame is in the shape of a U-shaped U, and the outer walls on both sides of the moving block are in sliding contact with the outer walls on both sides of the moving groove.

[0011] Preferably, outer walls on both sides of the toothed plate are provided with teeth, the meshing gear is a circular gear, and the driving gear and the transmission gear are both bevel gears.

[0012] Beneficial effects of the utility model:

[0013] 1. By arranging vertical screws, pressure racks, meshing gears, horizontal screws, micro motors, driving gears and transmission gears, multiple pressure racks correspond to the recessed parts of the IGBT. With the help of the above components, they can be lowered to contact and squeeze the recessed parts of the IGBT module, thereby ensuring the stability of the IGBT module and improving the practicality of the fixed pressure plate.

[0014] 2. By setting the disassembly and assembly port, tooth plate, connecting plate and connecting bolts, etc., the fixed connection between the connecting plate and the connecting groove can be released by removing the connecting bolts, thereby realizing the disassembly of the movable pressure plate relative to the fixed pressure plate. When the IGBT module is in a fixed state, the observation and maintenance of some welded components on the IGBT module can be realized by opening the installation port. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a pressure plate structure of an IGBT with a pressure structure proposed by the utility model;

[0016] Figure 2 It is a schematic diagram of the structure of the fixed pressure plate viewed from above;

[0017] Figure 3 for Figure 2 A schematic diagram of the structure at A;

[0018] Figure 4 It is a schematic diagram of the vertical section structure of the movable pressing plate;

[0019] Figure 5 for Figure 4 An enlarged schematic diagram of the structure at location B.

[0020] In the figure: 1 fixed pressure plate, 2 fixed plate, 3 mounting port, 4 movable pressure plate, 5 connecting plate, 6 tooth plate, 7 moving block, 8 rotating groove, 9 meshing gear, 10 receiving groove, 11 pressure frame, 12 rotating cavity, 13 micro motor, 14 driving gear, 15 moving groove, 16 horizontal screw, 17 transmission gear. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-5 A pressure plate structure of an IGBT with a pressurized structure includes a fixed pressure plate 1, a fixed plate 2 is provided on the fixed pressure plate 1, the IGBT module is located between the fixed pressure plate 1 and other mounting interfaces, and the fixed plate 2 is connected to other mounting interfaces by fixing bolts.

[0023] A movable pressing plate 4 is provided on the fixed pressing plate 1 through the mounting opening 3. The movable pressing plate 4 is installed in the mounting opening 3 through a connecting mechanism. The connecting mechanism includes a connecting plate 5 arranged on the movable pressing plate 4. A connecting groove corresponding to the mounting opening 3 is provided on the fixed pressing plate 1. The connecting plate 5 is installed in the connecting groove and the mounting opening 3 through connecting bolts.

[0024] A receiving groove 10 is provided on the bottom wall of the fixed pressing plate 1, a rotating groove 8 is provided in the mounting port 3, a vertical screw is rotatably provided in the rotating groove 8, a pressure frame 11 threadedly connected to the vertical screw is provided in the receiving groove 10, a moving groove 15 is provided on the bottom wall of the movable pressing plate 4, a rotating cavity 12 is provided inside the movable pressing plate 4, a micro motor 13 is provided in the rotating cavity 12, a transverse screw 16 extending into the rotating cavity 12 is provided in the moving groove 15, a tooth plate 6 is provided on the transverse screw 16 through a moving block 7, teeth are provided on the outer walls on both sides of the tooth plate 6, and the meshing gear 9 is a circular gear.

[0025] The toothed plate 6 is connected to the vertical screw rod through a meshing mechanism. The meshing mechanism includes a meshing gear 9 arranged on the vertical screw rod. The toothed plate 6 meshes with the meshing gear 9. The driving gear 14 and the transmission gear 17 are both bevel gears.

[0026] The transverse screw 16 is connected to the micro motor 13 through a transmission mechanism. The transmission mechanism includes a driving gear 14 disposed in the rotating chamber 12 and connected to the output shaft of the micro motor 13 . A transmission gear 17 is mounted on the transverse screw 16 , and the driving gear 14 meshes with the transmission gear 17 .

[0027] The vertical cross-section of the pressure frame 11 is in the shape of a U-shaped U, so the pressure frame 11 has its own limit and will not rotate along with the vertical screw in the rotating groove 8. The outer walls on both sides of the moving block 7 are in sliding contact with the outer walls on both sides of the moving groove 15, so the moving block 7 has its own limit and will not rotate along with the horizontal screw 16.

[0028] When the utility model is in use, the IGBT module is located between the fixed pressure plate 1 and other installation interfaces, the fixed plate 2 is connected to the other installation interfaces by means of fixing bolts, the movable pressure plate 4 is located in the installation opening 3 and is connected by means of the connecting plate 5 with the connecting bolts, the tooth plate 6 is located in the installation opening 3 and is meshed with the meshing gear 9, after starting the micro motor 13, the active gear 14 can be driven to rotate, the active gear 14 can be matched with the transmission gear 17 to drive the horizontal screw 16 to rotate, when the horizontal screw 16 rotates, the moving block 7 threadedly mounted thereon can drive the tooth plate 6 to move in the installation opening 3, thereby realizing the rotation of the meshing gear 9, the rotation of the meshing gear 9 can drive the vertical screw to rotate, thereby realizing the descending of the pressure frame 11, which contacts the recessed part of the IGBT module and can be pressurized to ensure the stability of the overall installation of the IGBT module.

[0029] In this solution, the fixed connection between the connecting plate 5 and the connecting groove can be released by removing the connecting bolts, thereby realizing the disassembly of the movable pressure plate 4 relative to the fixed pressure plate 1. When the IGBT module is in a fixed state, some welded components on the IGBT module can be observed and repaired by opening the installation port 3.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pressure plate structure of an IGBT with a pressure structure, comprising a fixed pressure plate (1), characterized in that: A fixed pressing plate (1) is provided with a fixed plate (2). An active pressing plate (4) is provided on the fixed pressing plate (1) through an installation opening (3). The active pressing plate (4) is installed in the installation opening (3) through a connection mechanism. A storage groove (10) is provided on the bottom wall of the fixed pressing plate (1). A rotation groove (8) is provided in the installation opening (3). A vertical screw rod is rotatably provided in the rotation groove (8). A pressing frame (11) threadedly connected to the vertical screw rod is provided in the storage groove (10). A moving groove (15) is provided on the bottom wall of the active pressing plate (4). A rotation cavity (12) is provided inside the active pressing plate (4). A micro motor (13) is provided in the rotation cavity (12). A horizontal screw rod (16) extending into the rotation cavity (12) is provided in the moving groove (15). A toothed plate (6) is provided on the horizontal screw rod (16) through a moving block (7). The toothed plate (6) is connected to the vertical screw rod through an engagement mechanism. The horizontal screw rod (16) is connected to the micro motor (13) through a transmission mechanism.

2. The IGBT pressure plate structure with a pressure structure according to claim 1, characterized in that: The connection mechanism includes a connection plate (5) provided on the active pressing plate (4). A connection groove corresponding to the installation opening (3) is provided on the fixed pressing plate (1). The connection plate (5) is installed in the connection groove and the installation opening (3) through a connection bolt.

3. The IGBT pressure plate structure with a pressure structure according to claim 2, characterized in that: The engagement mechanism includes an engagement gear (9) provided on the vertical screw rod. The toothed plate (6) is engaged with the engagement gear (9).

4. The IGBT pressure plate structure with a pressure structure according to claim 3, characterized in that: The transmission mechanism includes a driving gear (14) provided in the rotation cavity (12) and connected to the output shaft of the micro motor (13). A transmission gear (17) is installed on the horizontal screw rod (16). The driving gear (14) is engaged with the transmission gear (17).

5. The IGBT pressure plate structure with a pressure structure according to claim 4, characterized in that: The vertical cross-sectional view of the pressing frame (11) is in a shape of a Chinese character 'hui'. Both outer walls on two sides of the moving block (7) are in sliding contact with both outer walls of the moving groove (15).

6. The IGBT pressure plate structure with a pressure structure according to claim 5, characterized in that: Tooth teeth are provided on both outer walls of the toothed plate (6). The engagement gear (9) is a circular gear. Both the driving gear (14) and the transmission gear (17) are bevel gears.

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