Universal module signal terminal switching device

Abstract

The utility model discloses a universal module signal terminal switching device, which comprises a switching structure and a fixed bottom plate for mounting a module, and is characterized in that the switching structure is detachably connected to one side of the fixed bottom plate through a connecting block; the switching structure comprises a front baffle plate, a crimping plate is arranged on one side, facing the fixed bottom plate, of the front baffle plate, a moving assembly for driving the crimping plate to move towards the fixed bottom plate is arranged on the front baffle plate, a switching copper bar is arranged on the inner side of the crimping plate, and a crimping copper block connected with the module signal terminal is arranged on the switching copper bar. The pressing plate is driven by the moving assembly to move towards the module, and the crimping copper block on the pressing plate can be connected with the signal terminal, so that signal switching is realized, namely, the module with the signal terminal on the side surface can be changed, and a side signal can be transferred to the upper part; therefore, the module and a module with a conventional signal terminal surface on the upper surface can be tested on the same test production line.

Description

Technical Field

[0001] The utility model relates to the technical field of signal terminal switching, in particular to a universal module 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 CN139456215U, 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 universal module signal terminal adapter device comprises an adapter structure and a fixed base plate for mounting the module, wherein the adapter structure is detachably connected to one side of the fixed base plate through a connecting block;

[0008] The transfer structure includes a front baffle, wherein a crimping plate is provided on the side of the front baffle facing the fixed base plate, a moving component for driving the crimping plate to move toward the fixed base plate is provided on the front baffle, a transfer copper bar is provided on the inner side of the crimping plate, and a crimping copper block connected to the module signal terminal is provided on the transfer copper bar.

[0009] The present application sets a front baffle, a moving component and a clamping plate, and drives the clamping plate to move toward the module through the moving component. The crimping copper block on the clamping plate can be connected to the signal terminal, thereby realizing signal transfer, that is, it can change the direction of the signal terminal on the side of the module 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. 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 present application can be generally applied to this type of module, has a wide range of application, and is highly practical.

[0010] As a further solution of the utility model: the moving assembly includes a guide shaft, and one end of the guide shaft passes through the front baffle and then abuts against the crimping plate.

[0011] As a further solution of the utility model: a handle is provided at one end of the guide shaft and located on the outside of the front baffle, and a stopper is provided at the other end of the guide shaft and located on one side of the crimping plate, wherein a polyurethane pressure block is also installed at the end of the guide shaft that contacts the crimping plate.

[0012] As a further solution of the utility model: a "cross" shaped hole connected to the guide shaft is opened on the front baffle, and a limit pin that can be fixed with the "cross" shaped hole is installed on the guide shaft.

[0013] As a further solution of the utility model: support blocks 1 are installed on both sides of the front baffle, guide blocks are installed on the tops of the two support blocks 1, and the crimping plate can be slidably connected to the two guide blocks.

[0014] As a further solution of the utility model: the handle is vertically distributed to the guide shaft.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The present application sets a front baffle, a moving assembly and a clamping plate, and drives the clamping plate to move toward the module through the moving assembly. The crimping copper block on the clamping plate can be connected to the signal terminal, thereby realizing signal transfer, that is, the module with the signal terminal on the side can be changed, and the side signal can be transferred 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. 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. In addition, the present application can be generally applied to this type of module, with a wide range of application and strong practicality.

[0017] 2. The present application sets a handle, a guide shaft and a block between the front baffle and the crimping plate. The position of the crimping plate can be adjusted by the handle and the guide shaft, and then the corresponding position of the crimping copper block can be adjusted so that it can be adjusted accordingly according to the position of the IGBT module. At the same time, a limit pin is also set on the guide shaft, and the limit pin can achieve the limit locking of the crimping copper block. The structure here is simple and the design is reasonable. The positioning of the limit pin can ensure the sealing between the module and the crimping copper block, close contact, and reliable current flow effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of an IGBT module according to an embodiment of the utility model;

[0019] Figure 2 This is a schematic structural diagram of a universal module signal terminal adapter device according to an embodiment of the utility model;

[0020] Figure 3 For the utility model embodiment Figure 3 Schematic diagram of some structures;

[0021] Explanation of the reference numerals: 1. IGBT module; 3. Guide block; 4. Transfer copper busbar; 5. Guide shaft; 6. Stop block; 7. Crimping plate; 8. Support block 1; 9. Bottom plate; 10. Connecting block; 11. Fixed bottom plate; 12. Limit pin; 13. Crimping copper block; 14. Handle; 15. Front baffle. DETAILED DESCRIPTION

[0022] 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.

[0023] Reference Figure 1 and Figure 2A universal module signal terminal adapter is used to install an IGBT module 1 and perform tightening measurement on the IGBT module 1. The adapter can 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.

[0024] Reference Figure 1 ,from Figure 1 It can be seen that the IGBT module 1 of the present application is provided with signal terminals on both sides.

[0025] Reference Figure 2 and Figure 3 The adapter device includes two parts, namely, an adapter structure and a fixed base plate 11 for mounting the module, wherein the adapter structure is used to connect the signal terminal on one side of the IGBT module 1, and the fixed base plate 11 is used to assist the adapter structure to achieve connection with the IGBT module 1.

[0026] Reference Figure 2 and Figure 3 The fixed base plate 11 is a horizontal panel-shaped structure, and a plurality of waist-shaped holes for fixing and installing the IGBT module 1 are opened on the top thereof. The bottom of the fixed base plate 11 is flat and can be stably placed on a desktop or above a device.

[0027] Reference Figure 2 and Figure 3 The transfer structure includes a guide block 3, a transfer copper bus 4, a guide shaft 5, a stopper 6, a crimping plate 7, a support block 8, a base plate 9, a connecting block 10, a limit pin 12, a crimping copper block 13, a handle 14 and a front baffle 15, wherein the front baffle 15 is arranged on the side of the base plate 9 away from the first connection structure, and the front baffle 15 is vertically distributed with the base plate 9, the base plate 9 is a horizontal plate, and the two ends of the base plate 9 are detachably connected to the fixed base plate 11 through the connecting block 10, and the connecting block 10, the base plate 9 and the fixed base plate 11 are all provided with mounting holes, and the connection of the connecting block 10, the base plate 9 and the fixed base plate 11 can be realized by passing bolts or pins through the mounting holes.

[0028] Reference Figure 2 and Figure 3A crimping plate 7 is provided on the inner side of the front baffle 15 facing the first connecting structure. The guide shaft 5 passes through the front baffle 15 and then the other end abuts against the crimping plate 7. The guide shaft 5 can push the crimping plate 7 to move. The guide shaft 5 can adjust the distance between the front baffle 15 and the crimping plate 7. A transfer copper bus 4 is provided on the side of the crimping plate 7 facing the IGBT module 1, and a crimping copper block 13 is installed on the transfer copper bus 4. The crimping copper block 13 can contact the signal terminal on the other side of the IGBT module 1 to realize signal transfer and transfer the signal to the transfer copper bus 4.

[0029] Furthermore, a handle 14 is provided at one end of the guide shaft 5 and located on the outside of the front baffle 15, and a stop block 6 is provided at the other end of the guide shaft 5 and located on one side of the crimping plate 7, wherein a polyurethane pressure block is also installed at the end of the guide shaft 5 that contacts the crimping plate 7 to ensure that the handle 14 group and the crimping plate 7 group are in soft contact and have a certain amount of elastic deformation. Two handles 14 are added at specific positions to make the force on the two points of the crimping plate group more balanced and the contact more reliable; a "cross"-shaped hole connected to the guide shaft 5 is opened on the front baffle 15, and a limit pin 12 that can be fixed to the "cross"-shaped hole is installed on the guide shaft 5.

[0030] By turning the handle 14, the limit pin 12 is disengaged from the "X" shaped hole, and then the crimping plate 7 can be driven to move by moving the guide shaft 5, so that the crimping plate 7 moves toward the signal terminal on the IGBT module 1 until it is fitted and connected with the signal terminal, and then the handle 14 is turned again to tighten the limit pin 12 into the "X" shaped hole, thereby achieving the limitation of the connection between the crimping plate 7 and the IGBT module 1.

[0031] Reference Figure 2 and Figure 3 Support blocks 8 are installed on both sides of the front baffle 15, and guide blocks 3 are installed on the tops of the two support blocks 8. The crimping plate 7 can be slidably connected to the two guide blocks 3.

[0032] Align the IGBT module 1 with the pins of the fixed base plate 11, then push the handle 14 to press the crimping plate group and the IGBT module 1 tightly, and after making sure that the limit pin 12 completely passes through the front baffle 15, turn the handle 14 to lock the state, thus completing the signal terminal surface transfer of the IGBT module 1.

[0033] The specific operating principles of this application are as follows:

[0034] First, the IGBT module 1 is mounted on the fixed base plate 11 by means of pins to achieve preliminary positioning of the IGBT module 1;

[0035] Then, the operating handle 14 pushes the clamping plate 7 to move toward the IGBT module 1. The movement of the clamping plate 7 drives the crimping copper block 13 to move until the crimping copper block 13 and the IGBT module 1 are pressed and fitted together; then the handle 14 is rotated 90° to drive the limit pin 12 to rotate, so that the limit pin 12 is locked with the "cross" hole. 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, and the uniformity with other types of modules is achieved by converting the structure of part of the module itself.

[0036] 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 universal module signal terminal adapter, characterized in that: It comprises a transfer structure and a fixed base plate (11) for installing the module, wherein the transfer structure is detachably connected to one side of the fixed base plate (11) via a connecting block (10); The transfer structure comprises a front baffle (15), wherein a crimping plate (7) is provided on the side of the front baffle (15) facing the fixed base plate (11), a moving component for driving the crimping plate (7) to move toward the fixed base plate (11) is provided on the front baffle (15), a transfer copper bar (4) is provided on the inner side of the crimping plate (7), and a crimping copper block (13) connected to the module signal terminal is provided on the transfer copper bar (4).

2. A universal module signal terminal adapter according to claim 1, characterized in that: The moving assembly comprises a guide shaft (5), one end of which passes through the front baffle plate (15) and then abuts against the crimping plate (7).

3. A universal module signal terminal adapter according to claim 2, characterized in that: A handle (14) is provided at one end of the guide shaft (5) and is located on the outside of the front baffle (15), and a stopper (6) is provided at the other end of the guide shaft (5) and is located on one side of the crimping plate (7), wherein a polyurethane pressing block is also installed at the end of the guide shaft (5) that contacts the crimping plate (7).

4. A universal module signal terminal adapter according to claim 2, characterized in that: The front baffle (15) is provided with a cross-shaped hole connected to the guide shaft (5), and the guide shaft (5) is provided with a limit pin (12) capable of being fixed to the cross-shaped hole.

5. A universal module signal terminal adapter according to claim 4, characterized in that: Support blocks (8) are installed on both sides of the front baffle (15), guide blocks (3) are installed on the tops of the two support blocks (8), and the crimping plate (7) can be slidably connected to the two guide blocks (3).

6. A universal module signal terminal adapter according to claim 3, characterized in that: The handle (14) is arranged perpendicularly to the guide shaft (5).

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