IGBT side frame positioning tool

Abstract

The utility model belongs to the technical field of IGBTs, and particularly relates to an IGBT side frame positioning tool which comprises a base, a first positioning piece, a second positioning piece and a third positioning piece, the first positioning piece, the second positioning piece and the third positioning piece are all arranged on the base, and the first positioning piece, the second positioning piece and the third positioning piece are different in shape and / or transverse size. The number of the first positioning pieces is four, and the four first positioning pieces are connected to form a rectangle in a surrounding mode. The number of the second positioning pieces is six, the six second positioning pieces are connected to form a rectangle in an enclosing mode, and the six second positioning pieces are located in the rectangle formed by connecting the four first positioning pieces to form the rectangle in an enclosing mode. The number of the third positioning pieces is two, and the two third positioning pieces are arranged at an interval, are located outside a rectangle formed after the four first positioning pieces are connected, and are used for limiting a wiring terminal on the side face of the IGBT side frame. According to the utility model, accurate positioning of at least three types of IGBT side frames can be compatible, the universality is higher, and the product assembly precision and the positioning efficiency are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of IGBT, and in particular relates to an IGBT side frame positioning tool. Background Art

[0002] The existing IGBT module side frame assembly method generally uses a set of special tooling for one model. During production, different tooling is disassembled and assembled according to different products to adapt to different models of products and achieve side frame positioning of different models of products.

[0003] When different models of products need to be produced in a short period of time, it is necessary to frequently disassemble and replace the tooling, which affects production efficiency. In addition, the tooling is prone to wear and damage during the frequent disassembly and replacement, or installation errors may occur, resulting in inaccurate positioning of the side frame and affecting the product assembly accuracy. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an IGBT side frame positioning tool with high versatility and improved positioning accuracy and efficiency.

[0005] The content of the utility model includes a base, a positioning member 1, a positioning member 2 and a positioning member 3, wherein the positioning member 1, the positioning member 2 and the positioning member 3 are all arranged on the base, and the positioning member 1, the positioning member 2 and the positioning member 3 have different shapes and / or lateral dimensions;

[0006] There are four positioning members one arranged, and the shape formed by connecting the four positioning members one is a rectangle; there are six positioning members two arranged, and the shape formed by connecting the six positioning members two is a rectangle, and they are located inside the rectangle formed by connecting the four positioning members one; there are two positioning members three arranged, and the two positioning members three are arranged at intervals, and are located outside the rectangle formed by connecting the four positioning members one, and are used to limit the connection terminals on the side of the IGBT side frame.

[0007] Furthermore, the distance between the rectangles formed by connecting the two positioning members three and the six positioning members two is greater than the frame width of the IGBT side frame.

[0008] Furthermore, the length direction of a rectangle formed by connecting two of the six positioning members is parallel to the length direction of a rectangle formed by connecting one of the four positioning members.

[0009] Furthermore, the distance between at least two sides of a rectangle formed by connecting two of the six positioning members and a rectangle formed by connecting one of the four positioning members is greater than the frame width of the IGBT side frame.

[0010] Furthermore, the positioning member 1, the positioning member 2 and the positioning member 3 have the same height.

[0011] Furthermore, the lateral dimension of the second positioning member is smaller than that of the first positioning member.

[0012] Furthermore, the positioning member 1, the positioning member 2 and the positioning member 3 are detachably connected to the base.

[0013] Furthermore, a plurality of mounting holes are provided on the base, and the mounting holes at corresponding positions of the positioning member 1, the positioning member 2 and the positioning member 3 are plugged in and interference fit.

[0014] Furthermore, a plurality of mounting holes are provided on the base, and the mounting holes at corresponding positions of the positioning member 1, the positioning member 2 and the positioning member 3 are threadedly connected.

[0015] Furthermore, the base is provided with a plurality of openings for reducing weight and / or avoiding air.

[0016] The beneficial effect of the utility model is that, by arranging corresponding numbers of positioning members 1, 2 and 3 at corresponding positions, combined with the shape characteristics of the IGBT side frame itself, when positioning a specific model of the IGBT side frame, some of the positioning members are used to achieve precise positioning, while the remaining positioning members will not cause interference, and it can be compatible with the positioning of at least three models of IGBT side frames, with higher versatility, reducing the frequency of disassembly and replacement of positioning tooling during production, reducing tooling wear, and increasing tooling service life, and can reduce installation errors caused by disassembly and assembly, thereby improving product assembly accuracy. Moreover, the shapes and / or lateral dimensions of positioning member 1, positioning member 2 and positioning member 3 are different, which can facilitate operators to quickly identify different positioning members and quickly use the corresponding positioning members to position the target model of the IGBT side frame, thereby improving positioning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model in the first use state.

[0018] Figure 2 This is a schematic diagram of the structure of the second use state of the utility model.

[0019] Figure 3 This is a schematic diagram of the structure of the third use state of the utility model.

[0020] In the figure: 1. base; 2. positioning piece 1; 3. positioning piece 2; 4. positioning piece 3. DETAILED DESCRIPTION

[0021] like Figure 1-Figure 3As shown, the utility model includes a base 1, a positioning member 1 2, a positioning member 2 3 and a positioning member 3 4, wherein the positioning member 1 2, the positioning member 2 3 and the positioning member 3 4 are all arranged on the base 1, and are used to respectively adapt to the positioning of different types of IGBT side frames, and the positioning member 1 2, the positioning member 2 3 and the positioning member 3 4 have different shapes and / or lateral sizes, so as to facilitate the identification of different positioning members and play a role in preventing mistakes.

[0022] There are four positioning members 1-2, and the shape formed by connecting the four positioning members 1-2 is a rectangle, which is suitable for the shape of the corresponding model IGBT side frame. There are six positioning members 2-3, and the shape formed by connecting the six positioning members 2-3 is a rectangle, and is located in the rectangle formed by connecting the four positioning members 1-2, which is suitable for the shape of the corresponding model IGBT side frame. There are two positioning members 3-4, and the two positioning members 3-4 are arranged at intervals and are located outside the rectangle formed by connecting the four positioning members 1-2, and are used to limit the connection terminals on the side of the corresponding model IGBT side frame.

[0023] Through the above settings, Figure 1 When positioning the IGBT side frame of the model shown in the figure, among the six positioning members 23, the four positioning members 23 located on both sides are respectively located at the four corners of the IGBT side frame, and the IGBT side frame is positioned. Figure 1 The left and right directions of the viewing angle are limited, and the two positioning members 23 located in the middle are located inside the IGBT side frame to limit the IGBT side frame. Figure 1 The upper and lower directions under the viewing angle are limited, that is, the IGBT side frame of this model is positioned by six positioning members 23. When positioning the IGBT side frame of this model, Figure 1 As shown, at this time, the four positioning members 1 2 and the two positioning members 3 4 are all located outside the IGBT side frame and do not interfere with the positioning of the IGBT side frame.

[0024] For example Figure 2 When positioning the IGBT side frame of the model shown in the figure, among the six positioning members 23, the four positioning members 23 located on both sides are respectively located at the four corners of the IGBT side frame, and the IGBT side frame is positioned. Figure 2 The two positioning members 34 are located outside the two sides of the side terminals of the IGBT side frame, and the IGBT side frame is limited in the up and down directions under the viewing angle. Figure 2 The left and right directions under the viewing angle are limited, that is, the positioning of the IGBT side frame of this model is achieved by four positioning members 2 3 and two positioning members 3 4. When positioning the IGBT side frame of this model, Figure 2 As shown, at this time, the other two positioning members 2 3 are located inside the IGBT side frame, and the four positioning members 1 2 are all located outside the IGBT side frame and do not interfere with the positioning of the IGBT side frame.

[0025] For example Figure 3 When positioning the IGBT side frame of the model shown, the four positioning members 1-2 are respectively located at the four inner recesses of the corners of the IGBT side frame. Figure 2 When positioning the IGBT side frame of this model, Figure 3 As shown, the six positioning members 2 3 are all located inside the IGBT side frame, and the two positioning members 3 4 are located outside the IGBT side frame and do not interfere with the positioning of the IGBT side frame.

[0026] In combination with the above content, it can be known that the positioning tooling provided by the utility model, by arranging corresponding numbers of positioning pieces 1 2, positioning pieces 2 3 and positioning pieces 3 4 at corresponding positions, combined with the shape characteristics of the IGBT side frame itself (a square frame structure with a hollow middle), when positioning a specific model of the IGBT side frame, some of the positioning pieces are used to achieve precise positioning, while the remaining positioning pieces will not cause interference, and can be compatible with the positioning of at least three models of IGBT side frames, with higher versatility, reducing the frequency of disassembly and replacement of positioning tooling during production, reducing tooling wear, and increasing tooling service life, and can reduce installation errors caused by disassembly and assembly, thereby improving product assembly accuracy. Moreover, the shapes and / or lateral dimensions of positioning piece 1 2, positioning piece 2 3 and positioning piece 3 4 are different, which can facilitate operators to quickly identify different positioning pieces and quickly use the corresponding positioning pieces to position the target model of the IGBT side frame, thereby improving positioning efficiency.

[0027] The distance between the rectangle formed by connecting the two positioning members 3 and the six positioning members 2 3 is greater than the frame width of the IGBT side frame. The frame width of the side frame specifically refers to the width from the inside to the outside of the side frame where the terminal block is not set. Figure 2 and Figure 3 When the IGBT side frame of the shown model is used, it will not interfere with the normal positioning of the IGBT side frame.

[0028] The length direction of the rectangle formed by connecting the six positioning members 2 to 3 is parallel to the length direction of the rectangle formed by connecting the four positioning members 1 to 2. The distance between at least two sides of the rectangle formed by connecting the six positioning members 2 to 3 and the rectangle formed by connecting the four positioning members 1 to 2 is greater than the frame width of the IGBT side frame. Specifically, the distance between the two sides of the length of the rectangle formed by connecting the six positioning members 2 to 3 and the two sides of the length of the rectangle formed by connecting the four positioning members 1 to 2 is greater than the frame width of the IGBT side frame, so as to ensure compatibility. Figure 3 When the IGBT side frame of the model shown is used, the six positioning members 23 will not interfere with the IGBT side frame.

[0029] In the present invention, on the basis of the above arrangement, it is further preferred that the heights of the positioning member 1 2, the positioning member 2 3 and the positioning member 3 4 are the same, so as to ensure that when the positioning member 1 2, the positioning member 2 3 and the positioning member 3 4 are used in combination, the different positioning members used in combination can effectively position the target model IGBT side frame, for example Figure 2 IGBT side frame for the model shown.

[0030] The specific shapes of positioning member 1 2, positioning member 2 3 and positioning member 3 4 are determined according to the actual design, and can be cylindrical, rectangular or other shapes. Preferably, the lateral dimension of positioning member 2 3 is smaller than that of positioning member 1 2. The lateral dimension is specifically the dimension in the lateral direction, that is, the cross-sectional dimension. Specifically, when positioning member 2 3 and positioning member 1 2 are cylindrical, the lateral dimension is the diameter of the cross section. When positioning member 2 3 and positioning member 1 2 are rectangular, the lateral dimension is the length or width of the cross section. Since the lateral dimension of positioning member 2 3 is smaller than that of positioning member 1 2, when positioning member 2 3 needs to be located inside the IGBT side frame, for example Figure 2 and Figure 3 In the case shown, the second positioning member 3 occupies a smaller space, reducing interference.

[0031] In one embodiment of the present invention, the first positioning member 2, the second positioning member 3 and the third positioning member 4 are fixedly connected to the base 1, for example, by welding.

[0032] In another embodiment of the present invention, the positioning member 1 2 , the positioning member 2 3 and the positioning member 3 4 are detachably connected to the base 1 , so that the corresponding positioning members can be easily disassembled and replaced.

[0033] In one setting mode of detachable connection, a plurality of mounting holes are provided on the base 1, and the mounting holes at corresponding positions of the positioning member 1 2, the positioning member 2 3 and the positioning member 3 4 are plugged in and interference fit.

[0034] In another setting mode of detachable connection, a plurality of mounting holes are provided on the base 1, and the mounting holes at corresponding positions of the positioning member 1 2, the positioning member 2 3 and the positioning member 3 4 are threadedly connected.

[0035] In the present invention, the base 1 is provided with several openings for weight reduction and / or space avoidance, such as avoiding the lead wires on the IGBT side frame and reducing the overall weight of the tooling. The specific position and size of the openings are determined according to actual requirements.

[0036] A person skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of protection of the present application is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present application as described above, which are not provided in detail for the sake of simplicity.

[0037] One or more embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the present application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of the present application should be included in the protection scope of the present application.

Claims

1. An IGBT side frame positioning tool, characterized in that: The invention comprises a base (1), a first positioning member (2), a second positioning member (3) and a third positioning member (4), wherein the first positioning member (2), the second positioning member (3) and the third positioning member (4) are all arranged on the base (1), and the first positioning member (2), the second positioning member (3) and the third positioning member (4) have different shapes and / or transverse dimensions; There are four positioning members one (2) arranged, and the shape formed by connecting the four positioning members one (2) is a rectangle; there are six positioning members two (3) arranged, and the shape formed by connecting the six positioning members two (3) is a rectangle, and they are located in the rectangle formed by connecting the four positioning members one (2); there are two positioning members three (4) arranged, and the two positioning members three (4) are arranged at intervals and are located outside the rectangle formed by connecting the four positioning members one (2), and are used to limit the connection terminals on the side of the IGBT side frame.

2. The IGBT side frame positioning tool as claimed in claim 1, characterized in that: The distance between the rectangles formed by connecting the two positioning members three (4) and the six positioning members two (3) is greater than the frame width of the IGBT side frame.

3. The IGBT side frame positioning tool as claimed in claim 1 or 2, characterized in that: The length direction of the rectangle formed by connecting the six second positioning members (3) is parallel to the length direction of the rectangle formed by connecting the four first positioning members (2).

4. The IGBT side frame positioning tool as claimed in claim 3, characterized in that: The distance between at least two sides of a rectangle formed by connecting the six second positioning members (3) and a rectangle formed by connecting the four first positioning members (2) is greater than the frame width of the IGBT side frame.

5. The IGBT side frame positioning tool as claimed in any one of claims 1, 2 and 4, characterized in that: The positioning member 1 (2), the positioning member 2 (3) and the positioning member 3 (4) have the same height.

6. The IGBT side frame positioning tool as claimed in claim 5, characterized in that: The lateral dimension of the second positioning member (3) is smaller than that of the first positioning member (2).

7. The IGBT side frame positioning tool as claimed in any one of claims 1, 2, 4 and 6, characterized in that: The positioning member 1 (2), the positioning member 2 (3) and the positioning member 3 (4) are detachably connected to the base (1).

8. The IGBT side frame positioning tool as claimed in claim 7, characterized in that: The base (1) is provided with a plurality of mounting holes, and the mounting holes at corresponding positions of the positioning member 1 (2), the positioning member 2 (3) and the positioning member 3 (4) are plugged in and interference fit.

9. The IGBT side frame positioning tool as claimed in claim 8, characterized in that: The base (1) is provided with a plurality of mounting holes, and the mounting holes at corresponding positions of the positioning member 1 (2), the positioning member 2 (3) and the positioning member 3 (4) are threadedly connected.

10. The IGBT side frame positioning tool as claimed in any one of claims 1, 2, 4, 6, 8 and 9, characterized in that: The base (1) is provided with a plurality of openings extending therethrough for reducing weight and / or avoiding air.

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