Terminal welding clamp

Abstract

The utility model discloses a terminal welding clamp. The terminal welding clamp comprises a terminal bayonet socket, the terminal bayonet socket comprises a plug board, a plurality of jacks are formed in the plug board, the plug board is provided with a first surface in the axial direction of the jacks, and the jacks penetrate through the first surface; the cover plate is laid on the first surface, the cover plate comprises a covering part and at least one avoiding part, the jacks, corresponding to the covering part, in the plug board are shielded by the covering part in the axial direction of the jacks, and the jacks, corresponding to the avoiding parts, in the plug board are exposed. According to the terminal welding clamp provided by the invention, when terminals are inserted for different semiconductor power devices, the conditions of wrong insertion or excessive insertion and missing insertion are reduced.

Description

Technical Field

[0001] The present application belongs to the field of semiconductor technology, and in particular relates to a terminal welding fixture. Background Art

[0002] During the installation process of semiconductor power devices, it is usually necessary to weld terminals on the semiconductor power devices, and then weld the semiconductor power devices to the circuit board through the terminals.

[0003] During connection, the terminals are usually positioned using a terminal welding fixture, and then the semiconductor power device is welded and fixed to the terminals. The semiconductor power device and the terminals connected to it are then removed from the terminal welding fixture for subsequent welding and fixing to the circuit board.

[0004] However, during use, it was found that the terminal positions of different types of semiconductor power devices are different. In order to adapt to different semiconductor power devices, the terminal welding fixture is provided with a large number of sockets for terminal insertion and positioning. When welding terminals of different types of semiconductor power devices, the terminals need to be inserted into the corresponding sockets. Due to the large number of sockets, it is very easy to insert the wrong socket or insert multiple sockets or miss them when inserting the terminals. Utility Model Content

[0005] The present application provides a terminal welding fixture, which reduces the occurrence of incorrect insertion into a socket or multiple insertions when inserting terminals into different semiconductor power devices.

[0006] The present application provides a terminal welding fixture, wherein the terminal welding fixture comprises:

[0007] The terminal socket comprises a plug-in board, wherein the plug-in board is provided with a plurality of plug-in holes, and along the axial direction of the plug-in holes, the plug-in board has a first surface, and each of the plug-in holes passes through the first surface;

[0008] A cover plate is laid on the first surface, and the cover plate includes a covering portion and at least one avoidance portion. Along the axial direction of the socket, the socket on the plug board corresponding to the covering portion is blocked by the covering portion, and the socket on the plug board corresponding to the avoidance portion is exposed.

[0009] In the terminal welding fixture as described above, at least one positioning portion is protruding from the first surface, at least one positioning hole is correspondingly provided on the cover plate, and each positioning portion is correspondingly embedded in one of the positioning holes.

[0010] In the terminal welding fixture as described above, along a direction perpendicular to the first surface, the projection shapes of the positioning portion and the positioning hole are the same and both are polygonal or irregular.

[0011] The terminal welding fixture as described above, wherein the terminal socket further includes a plurality of limiting portions, the limiting portions being protruding from the first surface, and each of the limiting portions being spaced apart along the periphery of the plug board, and a plurality of limiting grooves being recessed on the periphery of the cover plate, and each of the limiting portions being embedded in a corresponding limiting groove.

[0012] The terminal welding fixture as described above, wherein the terminal welding fixture further includes a device supporting seat, which can be detachably connected to the terminal socket through a connector, and the device supporting seat is provided with at least one embedding hole for accommodating a power device.

[0013] The terminal welding fixture as described above, wherein the device carrier includes a carrier plate and a plurality of connecting parts, the embedding holes are opened on the carrier plate, the connecting parts are arranged at intervals along the periphery of the carrier plate, and each of the connecting parts is connected to one of the limiting parts through the connecting piece.

[0014] As described above, the terminal welding fixture, wherein at least one hollow portion is provided on the terminal socket, and a plurality of the insertion holes are spaced apart around the periphery of each hollow portion, and along the through direction of the hollow portion, the projection of the hollow portion at least partially overlaps with the projection of the embedded hole.

[0015] The terminal welding fixture as described above, wherein a first arrow mark is provided on the terminal socket, a second arrow mark is provided on the cover plate, and a third arrow mark is provided on the device supporting seat, and the first arrow mark, the second arrow mark and the third arrow mark point in the same direction.

[0016] The terminal welding fixture as described above, wherein a support piece is protruded from a side of the limiting portion facing away from the device supporting seat.

[0017] The terminal welding fixture as described above, wherein the terminal welding fixture has a first use state and a second use state;

[0018] In the first use state, the device supporting seat is separated from the terminal socket, and the cover plate is assembled with the terminal socket;

[0019] In the second usage state, the cover plate is separated from the terminal socket, and the device support is assembled with the terminal socket.

[0020] The terminal welding fixture provided in the present application can cover and block the sockets that do not need to be inserted with terminals by setting a cover plate when inserting terminals into the sockets, and expose the sockets that need to be inserted with terminals. This can effectively reduce the situations of wrong insertion, multiple insertion and missed insertion, and improve the overall terminal welding efficiency of semiconductor power devices. Different cover plates can be correspondingly provided to expose the sockets at the positions where terminals need to be connected according to the type of semiconductor power devices, so as to flexibly adapt to different types of semiconductor power devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] Figure 1 This is a schematic structural diagram of the terminal welding fixture according to an embodiment of the present application in a first use state;

[0023] Figure 2 This is a schematic structural diagram of a terminal socket of a terminal welding fixture according to an embodiment of the present application;

[0024] Figure 3 This is a structural schematic diagram of a cover plate of a terminal welding fixture according to an embodiment of the present application;

[0025] Figure 4 This is another structural schematic diagram of the cover plate of the terminal welding fixture according to an embodiment of the present application;

[0026] Figure 5 This is a schematic diagram of the second usage state of the terminal welding fixture according to an embodiment of the present application.

[0027] Description of Figure Numbers:

[0028] 1. Terminal socket; 11. Plug board; 111. Socket; 112. First surface; 113. Hollow portion; 12. Positioning portion; 13. Limiting portion; 14. First arrow mark; 15. Support member; 2. Cover plate; 21. Covering portion; 22. Avoiding portion; 23. Positioning hole; 24. Limiting groove; 25. Second arrow mark; 3. Device support seat; 31. Support plate; 311. Embedded hole; 32. Connecting portion; 33. Third arrow mark; 4. Connector. DETAILED DESCRIPTION

[0029] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present application by illustrating the examples of the present application.

[0030] like Figures 1 to 4 As shown, the present application provides a terminal welding fixture, wherein the terminal welding fixture includes a terminal socket 1 and a cover plate 2.

[0031] The terminal socket 1 includes a plug-in board 11, which is provided with a plurality of plug-in holes 111 for terminals to be inserted. Along the axial direction of the plug-in holes 111, the plug-in board 11 has a first surface 112, and each plug-in hole 111 passes through the first surface 112; when inserting the terminal, the terminal passes through the first surface 112 and is inserted into the corresponding plug-in hole 111.

[0032] Optionally, the plug board 11 also has a second surface, which is arranged opposite to the first surface 112. The socket 111 is a through hole that passes through the second surface, so that when the terminal is inserted, the two ends of the terminal are respectively located on both sides of the plug board 11, which can improve the stability of the terminal insertion and reduce the occurrence of terminal tilting.

[0033] The cover plate 2 is laid on the first surface 112, and the cover plate 2 includes a covering portion 21 and at least one avoidance portion 22. Along the axial direction of the socket 111, the socket 111 on the plug board 11 corresponding to the covering portion 21 is blocked by the covering portion 21, and the socket 111 on the plug board 11 corresponding to the avoidance portion 22 is exposed.

[0034] Optionally, the avoidance portion 22 may be a hole structure opened in the middle of the cover plate 2 , or a notch recessed at the edge of the cover plate 2 .

[0035] The terminal welding fixture provided in the present application can cover and block the sockets 111 that do not need to be inserted with terminals by setting a cover plate 2 when inserting terminals into the sockets 111, and expose the sockets 111 that need to be inserted with terminals. This can effectively reduce the situations of wrong insertion, multiple insertion and missed insertion, and improve the overall terminal welding efficiency of semiconductor power devices.

[0036] like Figure 3 and Figure 4As shown, the present application can be equipped with multiple cover plates 2, and the positions and shapes of the covering portion 21 and the avoidance portion 22 on each cover plate 2 can be different, so that the socket 111 at the position where the terminal needs to be connected can be exposed according to the type of semiconductor power device, so as to flexibly adapt to different types of semiconductor power devices.

[0037] like Figure 1 and Figure 2 As shown, the terminal welding fixture provided by the present application has at least one positioning portion 12 protruding from the first surface 112, and at least one positioning hole 23 correspondingly provided on the cover plate 2, with each positioning portion 12 correspondingly embedded in one positioning hole 23. Through the insertion and positioning of the positioning portion 12 and the positioning hole 23, the relative position between the cover plate 2 and the plug board 11 can be maintained in a direction parallel to the cover plate 2, preventing the cover plate 2 from moving relative to the plug board 11, which would cause the socket 111 exposed by the avoidance portion 22 to not correspond to the position of the terminal to be connected to the power device.

[0038] Alternatively, as Figure 1 and Figure 2 As shown, there are multiple positioning portions 12 and positioning holes 23, and the positioning portions 12 are spaced apart, and the positioning holes 23 are spaced apart. This not only prevents the cover plate 2 from translating relative to the plug board 11 in a direction parallel to the cover plate 2, but also prevents the cover plate 2 from rotating relative to the plug board 11 with the positioning portion 12 as the center, further ensuring the accuracy of the socket 111 exposed by the avoidance portion 22.

[0039] Alternatively, as Figure 1 and Figure 2 As shown, in the terminal welding fixture provided by the present application, the projections of the positioning portion 12 and the positioning hole 23 along a direction perpendicular to the first surface 112 have the same shape and are both polygonal or irregular. This prevents the positioning portion 12 from rotating within the positioning hole 23. In the embodiment of the present application, even if only one positioning portion 12 and only one positioning hole 23 are provided, the cover plate 2 can still be prevented from rotating relative to the plug board 11 about the positioning portion 12, further ensuring the accuracy of the socket 111 exposed by the avoidance portion 22.

[0040] like Figure 1 and Figure 2As shown, the terminal welding fixture provided by the present application, wherein the terminal socket 1 further includes a plurality of limiting portions 13, the limiting portions 13 being convexly provided on the first surface 112, and the limiting portions 13 being spaced apart along the periphery of the plug board 11, and the cover plate 2 being recessed at its periphery with a plurality of limiting grooves 24, with each limiting portion 13 correspondingly embedded in a limiting groove 24. By providing the limiting portions 13 and the limiting grooves 24 to be embedded and engaged with each other, not only can the cover plate 2 be prevented from translating relative to the plug board 11 in a direction parallel to the cover plate 2, but also the cover plate 2 can be prevented from rotating relative to the plug board 11 with the positioning portion 12 as the center, thereby further ensuring the accuracy of the socket 111 exposed by the avoidance portion 22.

[0041] Optionally, the plug board 11 , the positioning portion 12 and the limiting portion 13 are integrally formed and connected, which has the advantages of simple processing, high structural strength and high processing precision.

[0042] like Figure 1 and Figure 5 As shown, the terminal welding fixture provided by the present application has a first use state (such as Figure 1 As shown) and the second use state (as Figure 5 shown).

[0043] In the first usage state, which can be understood as the terminal plugging state, the device support 3 is separated from the terminal plugging seat 1, and the cover 2 is assembled with the terminal plugging seat 1, exposing the jack 111 to be plugged in the terminal, so as to facilitate the terminal plugging process.

[0044] After completing the terminal plugging process in the first usage state, the terminal welding part is switched to the second usage state, which can be understood as the terminal welding state. At this time, the cover plate 2 is separated from the terminal socket 1, and the cover plate 2 is removed from the terminal socket 1, and the device carrier 3 is assembled with the terminal socket 1, so as to fix the relative position of the power device and the terminal, so as to facilitate the terminal welding process.

[0045] like Figure 5 As shown, the terminal welding fixture provided by the present application further includes a device holder 3, which is detachably connected to the terminal socket 1 via a connector 4. The device holder 3 is provided with at least one embedding hole 311 for accommodating a power device. After the device holder 3 is connected to the terminal socket 1, the relative position between the power device and the socket 111 is fixed, and the terminal and power device can now be welded, which can effectively improve welding accuracy.

[0046] Optionally, the connecting member 4 is a bolt or a screw, which connects the device supporting seat 3 and the terminal socket 1 in a detachable manner, so as to facilitate the switching of the terminal welding fixture between the first use state and the second use state.

[0047] like Figure 5 As shown, the terminal welding fixture provided by the present application, wherein the device carrier 3 includes a carrier plate 31 and a plurality of connecting parts 32, the embedding hole 311 is opened on the carrier plate 31 for embedding the power device, and the connecting parts 32 are arranged at intervals along the periphery of the carrier plate 31, and each connecting part 32 is connected to a limiting part 13 through a connector 4 to realize a detachable connection between the device carrier 3 and the terminal socket 1.

[0048] Optionally, the supporting plate 31 and the connecting portion 32 are integrally formed and connected, which has the advantages of simple processing, high structural strength and high processing precision.

[0049] like Figure 2 As shown, the terminal welding fixture provided by the present application has at least one hollow portion 113 formed on the terminal socket 1. A plurality of insertion holes 111 are spaced apart around the periphery of each hollow portion 113. Along the through-going direction of the hollow portion 113, the projection of the hollow portion 113 at least partially overlaps with the projection of the insertion hole 311. That is, the hollow portion 113 corresponds to the power device. After the terminal socket 1 is connected to the device support 3, the hollow portion 113 allows the position of the power device to be welded to the terminal to be exposed, thereby facilitating the welding and fixing of the terminal to the power device through the hollow portion 113.

[0050] like Figures 1 to 5 As shown, the terminal welding fixture provided by the present application has a first arrow mark 14 provided on the terminal socket 1, a second arrow mark 25 provided on the cover plate 2, and a third arrow mark 33 provided on the device support seat 3. The first arrow mark 14, the second arrow mark 25, and the third arrow mark 33 point in the same direction. The first arrow mark 14 indicates the placement direction of the terminal socket 1 during assembly, the second arrow mark 25 indicates the placement direction of the cover plate 2 during assembly, and the third arrow mark 33 indicates the placement direction of the device support seat 3 during assembly. Since the structures such as the positioning portion 12 and the limiting portion 13 may not be regular patterns, after determining the assembly direction of the terminal socket 1, the cover plate 2, and the device support seat 3 through the first arrow mark 14, the second arrow mark 25, and the third arrow mark 33, the cover plate 2 and the terminal socket 1 are assembled, or the device support seat 3 and the terminal socket 1 are assembled, which has a fool-proof effect and is conducive to improving assembly efficiency and accuracy.

[0051] like Figure 1 、 Figure 2 and Figure 5 As shown, the terminal welding fixture provided by the present application has a support member 15 protruding from the side of the limiting portion 13 facing away from the device supporting seat 3, so that a gap is formed between the plug-in board 11 and the placement plane of the terminal welding fixture for the terminal to pass through smoothly.

[0052] The terminal welding fixture provided in the present application can cover and block the sockets 111 where no terminals are required to be inserted, and expose the sockets 111 where terminals are required to be inserted, by providing a cover plate 2 when inserting terminals into the sockets 111. This can effectively reduce the situations of wrong insertion, multiple insertion and missed insertion, and improve the overall terminal welding efficiency of semiconductor power devices. Different cover plates 2 can be provided accordingly to expose the sockets 111 at the positions where terminals need to be connected, according to the types of semiconductor power devices, so as to flexibly adapt to different types of semiconductor power devices.

[0053] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, the elements defined by the phrase "comprising..." do not exclude the presence of other identical elements in the process, method, article, or device comprising the elements.

[0054] The above description is only a specific embodiment of the present application. Those skilled in the art will clearly understand that for the convenience and brevity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the scope of protection of the present application is not limited thereto. Any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the scope of protection of the present application.

Claims

1. A terminal welding fixture, characterized in that: The terminal welding fixture comprises: A terminal socket (1) comprises a plug board (11), wherein the plug board (11) is provided with a plurality of plug holes (111), and along the axial direction of the plug holes (111), the plug board (11) has a first surface (112), and each of the plug holes (111) passes through the first surface (112); A cover plate (2) is laid on the first surface (112), and the cover plate (2) comprises a covering portion (21) and at least one avoiding portion (22). Along the axial direction of the plug hole (111), the plug hole (111) on the plug board (11) corresponding to the covering portion (21) is blocked by the covering portion (21), and the plug hole (111) on the plug board (11) corresponding to the avoiding portion (22) is exposed.

2. The terminal welding jig according to claim 1, characterized in that: At least one positioning portion (12) is protruding from the first surface (112), and at least one positioning hole (23) is correspondingly provided on the cover plate (2), and each positioning portion (12) is correspondingly embedded in one of the positioning holes (23).

3. The terminal welding jig according to claim 2, characterized in that: Along a direction perpendicular to the first surface (112), the projection shapes of the positioning portion (12) and the positioning hole (23) are the same and both are polygonal or irregular shapes.

4. The terminal welding jig according to any one of claims 1 to 3, characterized in that: The terminal socket (1) further comprises a plurality of limiting portions (13), wherein the limiting portions (13) are protruding from the first surface (112), and each of the limiting portions (13) is spaced apart along the periphery of the plug board (11); the cover plate (2) is provided with a plurality of limiting grooves (24) at its periphery, and each of the limiting portions (13) is correspondingly embedded in one of the limiting grooves (24).

5. The terminal welding jig according to claim 4, characterized in that: The terminal welding fixture further comprises a device support seat (3) which is detachably connected to the terminal socket (1) via a connector (4); the device support seat (3) is provided with at least one embedded hole (311) for accommodating a power device.

6. The terminal welding jig according to claim 5, characterized in that: The device support seat (3) comprises a support plate (31) and a plurality of connecting parts (32), the embedded holes (311) are opened on the support plate (31), the connecting parts (32) are arranged at intervals along the periphery of the support plate (31), and each of the connecting parts (32) is connected to one of the limiting parts (13) through the connecting member (4).

7. The terminal welding jig according to claim 5, characterized in that: At least one hollow portion (113) is provided on the terminal socket (1), and a plurality of the insertion holes (111) are spaced apart around the periphery of each hollow portion (113). Along the through direction of the hollow portion (113), the projection of the hollow portion (113) and the projection of the embedded hole (311) at least partially overlap.

8. The terminal welding jig according to claim 5, characterized in that: The terminal socket (1) is provided with a first arrow mark (14), the cover plate (2) is provided with a second arrow mark (25), and the device support seat (3) is provided with a third arrow mark (33), and the first arrow mark (14), the second arrow mark (25) and the third arrow mark (33) point in the same direction.

9. The terminal welding jig according to claim 5, characterized in that: A support member (15) is protrudingly provided on the side of the limiting portion (13) facing away from the device supporting seat (3).

10. The terminal welding jig according to any one of claims 5 to 9, characterized in that: The terminal welding fixture has a first use state and a second use state; In the first use state, the device support seat (3) is separated from the terminal socket (1), and the cover plate (2) is assembled with the terminal socket (1); In the second use state, the cover plate (2) is separated from the terminal socket (1), and the device support seat (3) is assembled with the terminal socket (1).

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