Module single-side signal terminal switching device

Abstract

The utility model discloses a module unilateral signal terminal switching device. The module unilateral signal terminal switching device comprises a connecting rod positioning structure and a first connecting structure installed on one side of the connecting rod positioning structure. The connecting rod positioning structure comprises a sliding bottom plate mounted with the module; the first switching structure comprises a fixed bottom plate slidably connected with the sliding bottom plate, and a limiting fixing piece is arranged on one side of the fixed bottom plate. Through cooperation of the first conversion structure and the connecting rod positioning structure, the module sampling direction of the signal terminal direction on the side surface can be changed, and a side signal is transferred to the upper part, so that the module can be tested on the same test production line with a module of which the conventional signal terminal surface is on the upper surface; the method is suitable for a module with a signal terminal arranged on the side face, uniformity with other types of modules is achieved by converting the structure of part of the module, cost is saved, a test production line is simplified, the method can be universally used for the type of modules, the application range is wide, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of signal terminal switching, in particular to a module single-side signal terminal switching device. Background Art

[0002] IGBT stands for Insulated Gate Bipolar Transistor, which is a composite fully controlled voltage-driven power semiconductor device composed of BJT (bipolar transistor) and MOS (insulated gate field effect transistor). It has the advantages of high input impedance of MOSFET and low on-state voltage drop of GTR. It has low driving power and low saturation voltage drop. The gate of IGBT is electrically isolated from the emitter by a layer of oxide film. It has excellent device performance and is widely used in servo motors, inverters, variable-frequency home appliances and other fields.

[0003] When testing its performance, different jigs are required for different IGBT modules to meet its testing requirements. For common IGBT package modules, the signal terminals are generally on the upper surface of the module, so the test method usually used is to put the test jig on top and the module under test on the bottom. The module is fixed on a device with adjustable height, and the sampling is performed by extending it upward and crimping it with the jig sampling probe. This test jig has also been relatively standardized and has formed specifications on multiple production test lines.

[0004] For example, the patent announcement number is CN219456224U, and the patent name is an existing patented technology for a test fixture for IGBT modules. This patented technology discloses a test fixture with the module under test at the bottom and the test fixture at the top. This fixture is suitable for testing signal terminals on the upper surface of the module. However, for some modules with signal terminals on the side, such as modules with single-sided signal terminals that need to be tested for performance, it is impossible to directly test them using the existing upper and lower crimping sampling method. Therefore, it is necessary to change the test fixture, but the design of the test fixture cannot be universal. However, the cost of changing the test fixture is high, and it may be necessary to increase the number of production lines, which is more troublesome to operate. Utility Model Content

[0005] The technical problem to be solved by the utility model is: how to provide a conversion tool for the sampling direction of the side-output signal terminal module.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] A module single-side signal terminal adapter device comprises a connecting rod positioning structure and a first connecting structure installed on one side of the connecting rod positioning structure;

[0008] The connecting rod positioning structure includes a sliding base plate installed with the module, and driving components for driving the sliding base plate toward the first switching structure are provided on both sides of the sliding base plate.

[0009] The first transfer structure includes a fixed base plate slidably connected to the sliding base plate, a limiting fixture is provided on one side of the fixed base plate, and a conductive component connected to the module signal terminal is installed inside the limiting fixture.

[0010] The present application, by setting up a first conversion structure and a connecting rod positioning structure, can change the sampling direction of the module with the signal terminal on the side, and transfer the side signal to the upper side, so that it can be tested on the same test production line as the module with the conventional signal terminal surface on the upper surface. It is suitable for modules with signal terminals arranged on the side, and can achieve uniformity with other types of modules by converting the structure of part of the module itself, thereby saving costs and simplifying the test production line. The present application can be generally applied to modules of this type, has a wide range of application, and is highly practical.

[0011] As a further solution of the utility model: the driving assembly includes a push rod, a guide column one and a guide column two, wherein the guide column two is arranged on both sides of the sliding base plate, and the guide column one is arranged on both sides of the fixed base plate, and the guide column two and the guide column one are both movably connected to the sliding groove opened on the push rod, and the push rod can drive the sliding base plate to move on the fixed base plate.

[0012] As a further solution of the utility model: a quick positioner is provided on the top of the sliding bottom plate and on the inner side of the second guide column.

[0013] As a further solution of the utility model: the slide groove adopts a waist-shaped hole structure.

[0014] As a further solution of the utility model: the conductive assembly includes a plurality of conductive blocks, wherein the plurality of conductive blocks are arranged on the side of the limit fixing member facing the sliding bottom plate, and an upper and lower layer of arc-shaped beryllium copper springs are fixed between two conductive blocks.

[0015] As a further solution of the utility model: a stacked busbar is also provided on the position limiting fixing member.

[0016] As a further solution of the utility model: a sliding groove is provided at the bottom of the sliding bottom plate, and a sliding rod is provided at the top of the fixed bottom plate and at a position corresponding to the sliding groove, wherein the sliding groove is slidably connected to the sliding rod.

[0017] As a further solution of the utility model: a second support block is provided on the inner side of the position limiting fixture and on both sides of the conductive component.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The present application can change the sampling direction of the module with the signal terminal on the side by setting the first conversion structure and the connecting rod positioning structure, and transfer the side signal to the top, so that it can be tested on the same test production line as the module with the conventional signal terminal surface on the upper surface. It can be applicable to the module with the signal terminal on the side, and achieve the uniformity with other types of modules by converting the structure of part of the module itself, thereby saving costs and simplifying the test production line. The present application can be generally applied to this type of module, with a wide range of application and strong practicality.

[0020] Second, the present application sets a labor-saving push rod, and the guide posts on the sliding bottom plate and the fixed bottom plate can slide in the push rod. By rotating the push rod, the sliding bottom plate can be driven to slide on the fixed bottom plate, the positioning hole position is calculated, and the force point is transferred to the push rod, thereby achieving the purpose of labor saving; the labor-saving structure is realized by adding guide posts to the moving and fixed bottom plates and using a special limited push rod;

[0021] 3. The present application sets a conductive block and sets a beryllium copper spring between the two conductive blocks. The above combination can ensure reliable current-carrying capacity and also has a certain clamping ability, so that the adapter and the IGBT module become an independent whole. The purpose of plug-in interlocking is achieved by using a combination of beryllium copper spring and copper block. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of an IGBT module according to an embodiment of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the switching device according to an embodiment of the utility model;

[0024] Figure 3 This is a schematic diagram of the exploded structure of the adapter device according to an embodiment of the utility model;

[0025] Figure 4 It is a schematic diagram of the exploded structure of the adapter device of the utility model embodiment from another perspective;

[0026] Figure 5 This is a schematic diagram of the combined structure of the IGBT module and the switching device of the embodiment of the utility model;

[0027] Figure 6 For the utility model embodiment Figure 5 A front view of

[0028] Figure 7 This is a schematic diagram of the combination of an IGBT module and a switching device according to an embodiment of the utility model;

[0029] Explanation of the reference numerals: 1. IGBT module; 2. Adapter; 11. Fixed base plate; 12. Sliding base plate; 13. Quick positioner; 14. Push rod; 15. Support block 2; 16. Positioning fixture; 17. Beryllium copper spring; 18. Stacked busbar; 19. Conductive block; 22. Guide pillar 1; 25. Guide pillar 2. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Reference Figure 1 and Figure 5 A module single-side signal terminal adapter device includes an adapter device 2, wherein an IGBT module 1 is installed in the adapter device 2, and the adapter device 2 can be used to convert the direction of the signal terminal opened on the side module, and transfer the side signal to the upper side, so that the module with the signal terminal opened on the side can be tested on the same test production line as the module with the conventional signal terminal surface on the upper surface. By converting the structure of part of the module itself, it can achieve uniformity with other types of modules, thereby saving costs and simplifying the test production line. The module of this application uses an IGBT module, but it is not limited to an IGBT module, and can be generally used for this type of module, that is, a module with a signal terminal opened on the side.

[0032] Reference Figure 1 ,from Figure 1 It can be seen that the IGBT module 1 of the present application is provided with a signal terminal on one side.

[0033] Reference Figure 2 , Figure 3 and Figure 4 The adapter device 2 includes three parts, namely a first adapter structure and a connecting rod positioning structure. The first adapter structure and the second adapter structure are respectively used to connect the signal terminals on both sides of the IGBT module 1, and the connecting rod positioning structure is used to assist the first adapter structure to achieve connection with the IGBT module 1.

[0034] Reference Figure 2 , Figure 3 and Figure 4The first transfer structure includes a fixed base plate 11, a supporting block 15, a limiting fixture 16, a beryllium copper spring 17, a stacked busbar 18, a conductive block 19 and a guide column 22. The first transfer structure is in an "L" shape as a whole. The fixed base plate 11 is a horizontal surface, and the limiting fixture 16 and the fixed base plate 11 can be vertically distributed and present a vertical surface.

[0035] Furthermore, the fixed bottom plate 11 is a horizontal panel-shaped structure, and a plurality of waist-shaped holes are provided on the top thereof for mounting the sliding bottom plate 12 in the connecting rod positioning structure. A sliding rod is also provided on the top of the fixed bottom plate 11, and the sliding bottom plate 12 can slide on the sliding rod. At the same time, the bottom of the fixed bottom plate 11 is flat and can be stably placed on a desktop or above a device. Figure 3 A guide column 22 is also provided.

[0036] Furthermore, the limiting fixture 16 is arranged on a side of the fixed base plate 11 away from the second connection structure, and a plurality of conductive blocks 19 are arranged on the inner side of the limiting fixture 16 facing the second connection structure, and the conductive blocks 19 are used to be plugged and clamped with the signal terminals on one side of the IGBT module 1; upper and lower layers of beryllium copper shrapnel 17 are also fixed between the two conductive blocks 19, and the beryllium copper shrapnel 17 is in an arc shape, which is fixed to the limiting fixture 16 in pairs, and the distance between the two opposing conductive blocks 19 is a specific height, which is determined by the corresponding signal terminal size, so that when the signal terminal is plugged with the conductive block 19, the middle beryllium copper shrapnel 17 can be in an extruded state, and has a certain extrusion force, which can ensure its reliable contact with the copper end face on the back of the IGBT module 1; at the same time, the other side of the conductive block 19 is fixed to the stacked busbar 18, and the other end of the stacked busbar 18 is located above the limiting fixture 16, and is no longer on the side.

[0037] Furthermore, a second support block 15 is provided on one side of the limiting fixture 16 and on both sides of the conductive block 19, wherein the second support block 15 can protect both sides of the conductive block 19 to prevent other objects from touching the conductive block 19 during subsequent storage.

[0038] Reference Figure 2 , Figure 3 and Figure 4 The connecting rod positioning structure includes a sliding base plate 12, a quick positioner 13, a push rod 14 and a guide column 25, wherein the sliding base plate 12 is a horizontal plate-shaped structure, and a slide groove is provided at the bottom of the sliding base plate 12, and the slide groove here can be slidably connected with the slide rod arranged above the fixed base plate 11; a plurality of mounting holes connected to the IGBT module 1 are also provided on the sliding base plate 12, and quick positioners 13 are also installed on both sides of the top of the sliding base plate 12. When the IGBT module 1 is placed on the sliding base plate 12, the quick positioners 13 are located on both sides of the IGBT module 1.

[0039] Further, on the front and rear sides of the sliding bottom plate 12 (the front and rear directions here are Figure 3 As a reference, a guide post 25 is installed, wherein the guide post 25 is slidably connected to the waist-shaped groove opened on the push rod 14, and the corresponding guide post 1 22 can also be slidably connected to the waist-shaped groove; in subsequent use, the sliding base plate 12 is slidably connected above the fixed base plate 11, and the guide post 1 22 and the guide post 25 are both located in the waist-shaped groove on the push rod 14, and are moved along the Figure 7 Rotate the push rod 14 in the indicated direction (such as Figure 7 As shown), the guide pillar 25 slides in the waist-shaped groove accordingly until the IGBT module 1 on the sliding base plate 12 is plugged into the conductive block 19 (as shown). Figure 5 and Figure 6 As shown), the IGBT module 1 is then fastened by the quick positioner 13.

[0040] This application is Figure 2 In the state shown, the IGBT module 1 is placed in alignment with the pins of the sliding base plate 12, and then the push rod 14 is pushed to make the IGBT module 1 and the conductive block fully fit together. After reaching the predetermined position, the quick positioner 13 is activated to change the state (such as Figure 6 ) is locked, thus completing the signal terminal surface transfer of the IGBT module 1.

[0041] The specific operating principles of this application are as follows:

[0042] First, the IGBT module 1 is mounted on the sliding base plate 12 by means of pins to achieve preliminary positioning of the IGBT module 1;

[0043] Then push the push rod 14 toward the conductive block 19 (as shown in FIG. Figure 7 As shown), at this time, the push rod 14 can drive the IGBT module 1 on the sliding base plate 12 to move toward the conductive block 19 until the IGBT module 1 is plugged into the conductive block 19; in the previous plugging step, since the upper and lower layers of arc-shaped beryllium copper shrapnel 17 are fixed between the two conductive blocks 19, the arc-shaped beryllium copper shrapnel 17 can be in close contact with the copper end surface on the back of the IGBT module 1, and the other side of the conductive block 19 is fixed to the laminated busbar;

[0044] Then operate the quick positioner 13 to fix the IGBT module 1. After this step is completed, the transfer of the signal terminal surface of the IGBT module 1 can be completed, and then the complete transfer tooling and the IGBT module assembly are tested on the same test production line with the module with the conventional signal terminal surface on the upper surface. The uniformity with other types of modules can be achieved by converting the structure of part of the module itself.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A module single-side signal terminal adapter, characterized in that: It includes a connecting rod positioning structure and a first connecting structure installed on one side of the connecting rod positioning structure; The connecting rod positioning structure comprises a sliding base plate (12) installed with the module, and both sides of the sliding base plate (12) are provided with a driving assembly for driving the sliding base plate (12) toward the direction of the first transfer structure; The first transfer structure comprises a fixed base plate (11) slidably connected to a sliding base plate (12); a limiting fixture (16) is provided on one side of the fixed base plate (11); a conductive component connected to a module signal terminal is installed on the inner side of the limiting fixture (16).

2. A module single-side signal terminal adapter according to claim 1, characterized in that: The driving assembly comprises a push rod (14), a guide column 1 (22) and a guide column 2 (25), wherein the guide column 2 (25) is arranged on both sides of the sliding base plate (12), and the guide column 1 (22) is arranged on both sides of the fixed base plate (11), and the guide column 2 (25) and the guide column 1 (22) are both movably connected to a slide groove provided on the push rod (14), and the push rod (14) can drive the sliding base plate (12) to move on the fixed base plate (11).

3. A module single-side signal terminal adapter according to claim 2, characterized in that: A quick positioner (13) is provided on the top of the sliding bottom plate (12) and on the inner side of the second guide column (25).

4. A module single-side signal terminal adapter according to claim 2, characterized in that: The slide groove adopts a waist-shaped hole structure.

5. The module single-side signal terminal adapter according to claim 1, characterized in that: The conductive assembly comprises a plurality of conductive blocks (19), wherein the plurality of conductive blocks (19) are arranged on a side of the position-limiting fixing member (16) facing the sliding bottom plate (12), and upper and lower layers of arc-shaped beryllium copper springs (17) are fixed between two conductive blocks (19).

6. A module single-side signal terminal adapter according to claim 5, characterized in that: The position-limiting fixing member (16) is also provided with a stacked busbar (18).

7. The module single-side signal terminal adapter according to claim 1, characterized in that: A sliding groove is provided at the bottom of the sliding bottom plate (12), and a sliding rod is provided at the top of the fixed bottom plate (11) at a position corresponding to the sliding groove, wherein the sliding groove is slidably connected to the sliding rod.

8. The module single-side signal terminal adapter according to claim 1, characterized in that: A second support block (15) is also provided on the inner side of the position-limiting fixing member (16) and on both sides of the conductive component.

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