Elastic clamping hook structure for IGBT (Insulated Gate Bipolar Translator) module

Abstract

The utility model relates to the technical field of IGBT modules, and discloses an elastic clamping hook structure for an IGBT module, which comprises a shell and a cover plate, and the upper surface of the shell is provided with a mounting port for clamping and placing the cover plate; rectangular grooves are formed in the two sides of the inner side wall of the shell. A rectangular groove is formed in the shell, a clamping and hooking plate with an elastic function is arranged in the rectangular groove, the bottom end of the clamping and hooking plate is fixedly connected with the shell, the clamping and hooking plate is designed to be of an inclination angle structure, and the top end of the clamping and hooking plate extends out of the rectangular groove; short-strip-shaped abutting plates are fixed to the two sides of the inner side wall of the shell, long-strip-shaped abutting plates are fixed to the other two sides of the inner side wall of the shell, the elastic clamping hook structure for the IGBT module is connected and placed through the elastic clamping hook structure, smooth clamping of the shell and the cover plate is achieved, a clamping hook is not broken, the elastic clamping hook structure is suitable for automatic assembling of the IGBT module, and the IGBT module is convenient to assemble. The assembling efficiency of the shell and the cover plate is improved, and the using effect is better.

Description

Technical Field

[0001] This utility model relates to the field of IGBT module technology, specifically to an elastic hook structure for IGBT modules. Background Technology

[0002] IGBT modules are key power semiconductor devices used in power electronic equipment. They combine the advantages of metal-oxide-semiconductor field-effect transistors and bipolar transistors, featuring high input impedance and low on-state voltage characteristics.

[0003] Existing IGBT module fixing hook structures feature guide bevels at the hook points on the housing and cover, resulting in a hard contact design for assembling the IGBT module housing and cover. However, the interference fit at the hook points prevents automated assembly of the housing and cover, and manual assembly frequently leads to hook breakage, rendering the IGBT module unusable. Therefore, we propose an elastic hook structure for IGBT modules to address these issues. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an elastic hook structure for IGBT modules, which solves the problem that interference fit at the hook in IGBT module fixing hook structures prevents automated assembly of the housing and cover plate, and that hook breakage frequently occurs during manual assembly, resulting in the scrapping of IGBT modules.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an elastic hook structure for an IGBT module, comprising a housing and a cover plate, wherein the upper surface of the housing is provided with an installation opening for the cover plate to be engaged and placed.

[0006] Rectangular grooves are formed on both sides of the inner wall of the shell;

[0007] The rectangular groove is provided with a flexible hook plate. The bottom end of the hook plate is fixedly connected to the housing. The hook plate is designed with an inclined structure, and the top end of the hook plate extends out from the rectangular groove.

[0008] Short strip-shaped abutment plates are fixed on both sides of the inner wall of the housing, and long strip-shaped abutment plates are fixed on the other two sides of the inner wall of the housing. The short strip-shaped abutment plates and the long strip-shaped abutment plates are used to limit and support the cover plate.

[0009] The top of the hook plate is integrally provided with a guide arc portion.

[0010] Preferably, the size of the mounting opening is adapted to the external dimensions of the cover plate.

[0011] Preferably, the edge of the cover plate is provided with a hook arc portion corresponding to the hook plate, and the guide arc portion and the hook arc portion are adapted to each other.

[0012] Preferably, the bottom end of the hook plate is provided with a root arc portion.

[0013] Preferably, an elastic movable part is formed between the hook plate and the housing.

[0014] Beneficial effects

[0015] This invention provides an elastic latch structure for IGBT modules. Compared with the prior art, it has the following advantages:

[0016] This IGBT module uses a flexible snap-fit ​​structure. This structure allows for smooth locking of the housing and cover without breakage, making it suitable for automated assembly of IGBT modules, improving assembly efficiency of the housing and cover, and resulting in better performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the existing technology structure;

[0018] Figure 2 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 3 This is a partial sectional view of the present invention;

[0020] Figure 4 This is a schematic diagram of the structure of the present invention with the shell and cover plate separated.

[0021] In the figure: 101, shell; 102, cover plate; 103, hook plate; 104, guide arc part; 105, hook arc part; 106, rectangular groove; 107, root arc part; 108, short strip abutment plate; 109, strip abutment plate two; 110, mounting port; 111, elastic moving part. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figure 2 As shown:

[0024] An elastic snap-hook structure for an IGBT module includes a housing 101 and a cover plate 102.

[0025] In this implementation plan: To solve the technical problems existing in the prior art, such as the "existing IGBT module fixing hook structure with guide bevels at the hook of the shell and cover plate, which is a hard contact design to realize the assembly and use of the IGBT module shell and cover plate, the interference at the hook of the IGBT module fixing hook structure makes it impossible to automate the assembly of the shell and cover plate, and the hook often breaks during manual assembly, causing the IGBT module to be scrapped" In terms of use, this problem is obviously a real and difficult problem to solve.

[0026] Furthermore:

[0027] like Figures 2-4 As shown:

[0028] Based on the above: the upper surface of the housing 101 is provided with a mounting opening 110 for the cover plate 102 to be engaged and placed;

[0029] Rectangular grooves 106 are provided on both sides of the inner sidewall of the housing 101;

[0030] A hook plate 103 with elastic function is provided in the rectangular groove 106. The bottom end of the hook plate 103 is fixedly connected to the housing 101. The hook plate 103 is designed with an inclined structure, and the top end of the hook plate 103 extends out from the rectangular groove 106.

[0031] Short strip-shaped abutment plates 108 are fixed on both sides of the inner sidewall of the housing 101, and long strip-shaped abutment plates 109 are fixed on the other two sides of the inner sidewall of the housing 101. The short strip-shaped abutment plates 108 and long strip-shaped abutment plates 109 are used to limit and support the cover plate 102.

[0032] The top of the hook plate 103 is integrally provided with a guide arc portion 104;

[0033] The edge of the cover plate 102 is provided with a hook arc portion 105 corresponding to the hook plate 103, and the guide arc portion 104 and the hook arc portion 105 are adapted to each other.

[0034] An elastic movable part 111 is formed between the hook plate 103 and the housing 101.

[0035] In this implementation scheme: the IGBT module uses an elastic hook structure. When the cover plate 102 is installed on the housing 101, the cover plate 102 is first aligned with the installation opening 110 of the housing 101, and the hook arc portion 105 of the cover plate 102 is aligned with the guide arc portion 104 at the top of the hook plate 103.

[0036] Then press the cover plate 102. At this time, the guide arc portion 104 at the top of the hook plate 103 abuts against the hook arc portions 105 on both sides of the cover plate 102. Since the guide arc portion 104 and the hook arc portion 105 are both set with arc angles, the cover plate 102 can be inserted more smoothly and the assembly can be completed without much force, reducing the difficulty of operation. Especially in environments with limited space or assembly conditions, it improves assembly efficiency. At the same time, the arc angle design can play a certain buffering role when subjected to external force.

[0037] When the cover plate 102 presses the top of the hook plate 103, one end of the hook plate 103 moves into the elastic moving part 111. By continuing to press the cover plate 102, the cover plate 102 is placed on the short strip abutment plate 108 and the long strip abutment plate 109. The short strip abutment plate 108 and the long strip abutment plate 109 support and limit the position of the cover plate 102. When the cover plate 102 contacts the short strip abutment plate 108 and the long strip abutment plate 109, the cover plate 102 releases the pressure on the top of the hook plate 103. The hook plate 103 resets itself with its own elasticity, so that the bottom of the hook end of the top of the hook plate 103 contacts the upper surface of the cover plate 102.

[0038] This allows for the installation and locking of the cover plate 102. The elastic hook structure connects and places the housing 101 and the cover plate 102, ensuring smooth locking without breakage of the hook. This is suitable for automated assembly of IGBT modules, improving the assembly efficiency of the housing 101 and the cover plate 102, and resulting in better performance.

[0039] Furthermore;

[0040] In an alternative embodiment, the dimensions of the mounting port 110 are adapted to the external dimensions of the cover plate 102.

[0041] In this embodiment, the outer surface dimensions of the cover plate 102 are adapted to the dimensions of the mounting opening 110, thereby increasing the sealing performance of the cover plate 102 and the housing 101 after the cover plate 102 is installed.

[0042] Furthermore;

[0043] In an optional embodiment, the bottom end of the hook plate 103 is provided with a root arc portion 107.

[0044] In this embodiment, the bottom of the hook plate 103 is provided with a root arc portion 107, which can reduce stress concentration at the root of the hook plate 103 during assembly and disassembly, thereby reducing fatigue damage caused by repeated operations, extending the service life of the hook plate 103, and allowing the hook plate 103 to deform and recover better when subjected to external forces.

[0045] The working principle and usage process of this utility model: The IGBT module uses an elastic hook structure. During use, when the cover plate 102 is installed on the housing 101, firstly, the cover plate 102 is aligned with the installation opening 110 on the housing 101, and simultaneously, the hook arc portion 105 on the cover plate 102 corresponds to the guide arc portion 104 on the top of the hook plate 103. Then, the cover plate 102 is pressed down. At this time, the guide arc portion 104 on the top of the hook plate 103 abuts against the hook arc portions 105 on both sides of the cover plate 102. Since both the guide arc portion 104 and the hook arc portion 105 are arc-shaped, the cover plate 102 can be inserted more smoothly, requiring less force to complete the assembly, reducing operational difficulty. This is especially beneficial in environments with limited space or assembly conditions, improving assembly efficiency. Simultaneously, the arc-shaped design provides a certain buffering effect when subjected to external force. The cover plate 102 abuts against the hook plate 103. When the part is pressed, one end of the hook plate 103 moves into the elastic moving part 111. By continuing to press the cover plate 102, the cover plate 102 is placed on the short strip abutment plate 108 and the long strip abutment plate 109. The short strip abutment plate 108 and the long strip abutment plate 109 provide positional support and limit for the cover plate 102. When the cover plate 102 contacts the short strip abutment plate 108 and the long strip abutment plate 109, the cover plate 102 releases its pressure. The pressing of the top of the hook plate 103 causes the hook plate 103 to return to its original position due to its own elasticity, so that the lower part of the hook end of the hook plate 103 contacts the upper surface of the cover plate 102, thereby locking the cover plate 102 in place. Through this elastic hook structure, the housing 101 and the cover plate 102 are smoothly locked together without the hook breaking. This is suitable for automated assembly of IGBT modules, improving the assembly efficiency of the housing 101 and the cover plate 102, and resulting in better performance.

[0046] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A flexible latch structure for an IGBT module, comprising a housing (101) and a cover plate (102), characterized in that, The upper surface of the housing (101) is provided with an installation port (110) for the cover plate (102) to be engaged and placed; The inner sidewall of the housing (101) is provided with rectangular grooves (106) on both sides; The rectangular groove (106) is provided with a hook plate (103) with elastic function. The bottom end of the hook plate (103) is fixedly connected to the shell (101). The hook plate (103) is designed with an inclined structure, and the top end of the hook plate (103) extends out from the rectangular groove (106). Short strip-shaped abutment plates (108) are fixed on both sides of the inner wall of the housing (101), and long strip-shaped abutment plates (109) are fixed on the other two sides of the inner wall of the housing (101). The short strip-shaped abutment plates (108) and long strip-shaped abutment plates (109) are used to limit and support the cover plate (102). The top of the hook plate (103) is integrally provided with a guide arc portion (104).

2. The elastic hook structure for IGBT modules according to claim 1, characterized in that: The dimensions of the mounting port (110) are adapted to the external dimensions of the cover plate (102).

3. The elastic hook structure for IGBT modules according to claim 1, characterized in that: The edge of the cover plate (102) is provided with a hook arc portion (105) corresponding to the hook plate (103), and the guide arc portion (104) and the hook arc portion (105) are adapted to each other.

4. The elastic hook structure for IGBT modules according to claim 3, characterized in that: The bottom end of the hook plate (103) is provided with a root arc portion (107).

5. The elastic hook structure for IGBT modules according to claim 1, characterized in that: An elastic movable part (111) is formed between the hook plate (103) and the housing (101).

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