IGBT (Insulated Gate Bipolar Translator) module shell convenient to assemble

Abstract

The utility model belongs to the technical field of IGBT (Insulated Gate Bipolar Translator) module shells, in particular to an IGBT module shell convenient to assemble, which comprises an IGBT module shell main body and a cover plate arranged at the top of the IGBT module shell main body, the installation assembly comprises insertion columns fixed to the four corners of the upper surface of the IGBT module shell body, clamping grooves formed in the surfaces of the insertion columns and insertion holes formed in the surface of the cover plate and matched with the insertion columns, and protruding blocks are fixed to the two sides of the cover plate. The fixing effect of the IGBT module shell body and the cover plate can be achieved without more time and effort to ensure that the IGBT module shell body and the cover plate are correctly screwed to a proper torque, the screwing period is short, through the operation, the installation effect can be improved, convenience is brought to installation of workers, the use effect of the device is further improved, and the actual use requirement is met.

Description

Technical Field

[0001] The utility model belongs to the technical field of IGBT module housings, and in particular relates to an IGBT module housing that is easy to assemble. Background Art

[0002] IGBT, insulated gate bipolar transistor, is a composite fully controlled voltage-driven power semiconductor device composed of BJT (bipolar junction transistor) and MOS (insulated gate field effect transistor). It has the advantages of both the high input impedance of MOSFET and the low on-state voltage drop of GTR. IGBT modules are generally installed inside the housing and then assembled using the housing.

[0003] Upon investigation, the publication (announcement) number CN213782005U discloses an IGBT module housing. This technology discloses "including a housing, a mounting groove is provided in the middle of the top surface of the housing, and multiple groups of pins are provided at the outer edge of the top surface of the housing, and the multiple groups of pins are arranged on the outside of the mounting groove. It is characterized in that: two groups of connecting protrusions are symmetrically provided on the left and right sides of the housing, respectively, and the connecting protrusions and the housing are integrally injection molded. The technical solution has connecting protrusions on both sides of the housing, and metal connectors are embedded in the connecting protrusions. Screw holes are provided on the metal connectors. In this way, the housing can be injection molded in one step during production, which improves the accuracy of the screw hole position, ensures the connection accuracy of the housing, and improves the production, sales and quality of the product. At the same time, due to the more precise position of the screw holes, the stability and firmness of the product installation connection are effectively improved."

[0004] While the above design improves the accuracy of screw hole positions, ensures housing connection accuracy, and improves product production, sales, and quality, the IGBT module housing and cover are screwed together and fixed via threads. This threaded connection may require more time and effort to ensure proper tightening to the appropriate torque, leading to a long tightening cycle and potentially lower installation efficiency due to frequent tightening, thus reducing the effectiveness of this structure.

[0005] In order to solve the above problems, the present application proposes an IGBT module housing that is easy to assemble. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the utility model provides an IGBT module housing that is easy to assemble. It can fix the IGBT module housing body and cover plate without requiring more time and effort to ensure that it is correctly tightened to the appropriate torque. The tightening cycle is short. Through this operation, the installation effect can be improved, which brings convenience to the workers, further improves the use effect of the device, and meets the actual use needs.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an IGBT module housing that is easy to assemble, comprising an IGBT module housing body and a cover plate arranged on the top of the IGBT module housing body, wherein a mounting assembly is installed on the cover plate, and the mounting assembly comprises plug posts fixed at the four corners of the upper surface of the IGBT module housing body, and slots provided on the surface of the plug posts and sockets provided on the surface of the cover plate that are compatible with the plug posts, protrusions are fixed on both sides of the cover plate, and the surface of the protrusion is rotatably connected to a locking bolt through a bearing, and the surface of the locking bolt is threadedly connected to a connecting plate, and movable sleeves are slidably mounted on both ends of the connecting plate.

[0008] As a preferred embodiment of the IGBT module housing of the present invention that is easy to assemble, a spring is fixed between the connecting plate and the movable housing.

[0009] As a preferred embodiment of the IGBT module housing of the present invention that is easy to assemble, the height of the movable sleeve matches the height of the slot.

[0010] As a preferred IGBT module housing that is easy to assemble according to the present invention, the lower surface of the connecting plate is fixed with symmetrically arranged limit rods, the surface of the protrusion is provided with a sliding groove that is compatible with the limit rod, and the limit rod and the protrusion are slidably connected through the sliding groove.

[0011] As a preferred embodiment of the IGBT module housing of the present invention that is easy to assemble, a rectangular block is fixed on one side of the upper surface of the movable housing close to the locking bolt.

[0012] As a preferred embodiment of the IGBT module housing of the present invention that is easy to assemble, a hexagonal socket is formed on the top of the locking bolt.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] By setting up the installation components, this operation can achieve the fixing effect of the IGBT module housing body and the cover without more time and energy to ensure that they are correctly tightened to the appropriate torque. The tightening cycle is short. This operation can improve the installation effect, bring convenience to the installation staff, further improve the use effect of the device, and meet actual use needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 This is a structural diagram of the disassembly of the housing body and cover of the IGBT module of the utility model;

[0017] Figure 2 This is a cross-sectional view of the structure of the movable shell in the utility model;

[0018] Figure 3 For this utility model Figure 1 A schematic diagram of the enlarged structure at point A;

[0019] Figure 4 This is a schematic structural diagram of the connecting parts such as the plug-in column and the card slot in the utility model.

[0020] In the figure: 1. IGBT module housing body; 2. Cover plate; 3. Mounting assembly; 301. Plug; 302. Socket; 303. Slot; 304. Bump; 305. Connecting plate; 306. Locking bolt; 307. Limit rod; 308. Spring; 309. Movable cover; 310. Rectangular block; 311. Hexagonal socket. DETAILED DESCRIPTION

[0021] 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.

[0022] Example 1

[0023] like Figure 1 As shown:

[0024] An IGBT module housing that is easy to assemble comprises an IGBT module housing body 1 and a cover plate 2 arranged on the top of the IGBT module housing body 1.

[0025] In this embodiment: the existing device {publication (announcement) number}: CN213782005U discloses an IGBT module housing. This application makes further improvements to this existing main body. For details, please refer to the disclosed technology below; in order to solve the technical problems existing in this prior art, as disclosed in the background technology above, "although the above-mentioned design improves the accuracy of the screw hole position when in use, ensures the housing connection accuracy, and improves the production, sales volume and quality of the product, the IGBT module housing and the cover plate 2 are screwed and fixed by threaded connection. The threaded connection may require more time and effort to ensure that it is correctly tightened to the appropriate torque. The screwing cycle is long, and frequent screwing may result in lower installation efficiency, reducing the use effect of this structure." In terms of use, this problem is obviously a real problem that exists and is relatively difficult to solve. In view of this, in order to solve this technical problem, an installation component 3 is added to this application document.

[0026] More specifically:

[0027] like Figure 1-Figure 4 As shown:

[0028] A mounting assembly 3 is mounted on the cover plate 2. The mounting assembly 3 includes pins 301 fixed at the four corners of the upper surface of the IGBT module housing body 1, slots 303 formed on the surface of the pins 301, and sockets 302 formed on the surface of the cover plate 2 and adapted to fit the pins 301. Bumps 304 are fixed on both sides of the cover plate 2. Locking bolts 306 are rotatably connected to the surfaces of the bumps 304 via bearings. Connecting plates 305 are threadedly connected to the surfaces of the locking bolts 306. Movable sleeves 309 are slidably mounted on both ends of the connecting plate 305.

[0029] A spring 308 is fixed between the connecting plate 305 and the movable housing 309;

[0030] The height of the movable housing 309 matches the height of the slot 303 .

[0031] In this embodiment, the IGBT module housing that is easy to assemble is used. First, the IGBT module housing body 1 and the cover plate 2 are aligned. At this time, the plug post 301 is inserted into the inside of the socket 302. At this time, the spring 308 rebounds and drives the movable shell 309 to move, so that the movable shell 309 is inserted into the inside of the slot 303. The setting of the spring 308 can provide the connection stability of the connecting plate 305 and the movable shell 309. The elastic force of the spring 308 can better insert the movable shell 309 into the inside of the slot 303, and then the locking bolt 306 is rotated, and then The connecting plate 305 is driven to move upward, and the movable shell 309 can be driven to move upward through the connecting plate 305, so that the movable shell 309 squeezes the plug post 301. At this time, the reaction force of the protrusion 304 can fix the IGBT module shell body 1 and the cover plate 2. Through this operation, no more time and energy are required to ensure that the appropriate torque is correctly tightened, and the fixing effect of the IGBT module shell body 1 and the cover plate 2 can be achieved. The tightening cycle is short. Through this operation, the installation effect can be improved, which brings convenience to the installation of the staff, further improves the use effect of the device, and meets the actual use needs.

[0032] Going further;

[0033] In an optional embodiment, symmetrically arranged limiting rods 307 are fixed to the lower surface of the connecting plate 305, and a sliding groove adapted to the limiting rods 307 is provided on the surface of the protrusion 304, and the limiting rods 307 and the protrusion 304 are slidably connected through the sliding groove.

[0034] In this embodiment, the connecting plate 305 drives the limiting rod 307 to move during the movement. The setting of the limiting rod 307 can limit the connecting plate 305, making the connecting plate 305 more stable during the movement.

[0035] Going further;

[0036] In an optional embodiment, a rectangular block 310 is fixed to a side of the upper surface of the movable housing 309 close to the locking bolt 306 .

[0037] In this embodiment, by pressing the rectangular block 310 , the movable cover 309 can be flexibly driven to move, providing convenience to the staff during the use of the structure.

[0038] Going further;

[0039] In an optional embodiment, a hexagonal socket 311 is formed on the top of the locking bolt 306 .

[0040] In this embodiment, a hexagonal groove 311 is formed on the top of the locking bolt 306 , which facilitates the screwing of the locking bolt 306 and provides a better fixing effect for the IGBT module housing body 1 and the cover plate 2 .

[0041] The working principle and use process of the present invention: The IGBT module housing that is easy to assemble, when in use, first make the IGBT module housing body 1 and the cover plate 2 correspond to each other, at this time the pin 301 is inserted into the inside of the socket 302, at this time, through the rebound of the spring 308, the movable shell 309 is driven to move, so that the movable shell 309 is inserted into the inside of the slot 303, and the setting of the spring 308 can provide the connection stability of the connecting plate 305 and the movable shell 309, and the elastic force of the spring 308 can better insert the movable shell 309 into the inside of the slot 303, and then rotate the locking bolt 306 to drive the connecting plate 305 to move upward, and the movable shell 309 can be driven upward by the connecting plate 305, so that the movable shell 309 squeezes the pin 301, and the reaction force of the protrusion 304 can thereby The shell body 1 and the cover plate 2 are fixedly connected. Through this operation, no more time and energy are required to ensure that they are correctly tightened to the appropriate torque, so that the fixing effect of the IGBT module shell body 1 and the cover plate 2 can be achieved. The screwing cycle is short. Through this operation, the assembly effect can be improved, which brings convenience to the installation of the staff, further improves the use effect of the device, and meets the actual use needs. During the movement, the connecting plate 305 drives the limit rod 307 to move. Through the setting of the limit rod 307, the connecting plate 305 can be limited, making the connecting plate 305 more stable during the movement. By pressing the rectangular block 310, the movable shell 309 can be flexibly driven to move. The top of the locking bolt 306 is provided with a hexagonal groove 311, which can facilitate the screwing of the locking bolt 306, providing a better fixing effect for the IGBT module shell body 1 and the cover plate 2.

[0042] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An IGBT module housing that is easy to assemble, comprising an IGBT module housing body (1) and a cover plate (2) arranged on the top of the IGBT module housing body (1), characterized in that: The cover plate (2) is provided with a mounting assembly (3), the mounting assembly (3) comprising plug posts (301) fixed at the four corners of the upper surface of the IGBT module housing body (1), a slot (303) provided on the surface of the plug posts (301), and a socket (302) provided on the surface of the cover plate (2) and adapted to the plug posts (301). Both sides of the cover plate (2) are fixed with protrusions (304), the surface of the protrusions (304) is rotatably connected to a locking bolt (306) via a bearing, the surface of the locking bolt (306) is threadedly connected to a connecting plate (305), and both ends of the connecting plate (305) are slidably sleeved with movable housings (309).

2. The IGBT module housing that is easy to assemble according to claim 1, characterized in that: A spring (308) is fixed between the connecting plate (305) and the movable casing (309).

3. The IGBT module housing that is easy to assemble according to claim 2, characterized in that: The height of the movable casing (309) matches the height of the slot (303).

4. The IGBT module housing that is easy to assemble according to claim 3 is characterized in that: The lower surface of the connecting plate (305) is fixed with symmetrically arranged limiting rods (307), and the surface of the protrusion (304) is provided with a sliding groove matched with the limiting rod (307), and the limiting rod (307) and the protrusion (304) are slidably connected through the sliding groove.

5. The IGBT module housing that is easy to assemble according to claim 4, characterized in that: A rectangular block (310) is fixed on one side of the upper surface of the movable casing (309) close to the locking bolt (306).

6. The easy-to-assemble IGBT module housing according to claim 5, characterized in that: The top of the locking bolt (306) is provided with a hexagonal socket (311).

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