Tool for installing radiator and IGBT (Insulated Gate Bipolar Translator)

Abstract

The utility model discloses a tool for installing a radiator and an IGBT, the tool is used for installing the radiator and the IGBT, the tool comprises an installing plate and a plurality of pin limiting blocks, the installing plate is provided with a front side surface and a rear side surface; the plurality of pin limiting blocks are respectively fixed on the front side surface and the rear side surface; wherein the multiple pin limiting blocks are sequentially arranged at intervals in pairs in the first direction, the pin limiting blocks are sequentially and oppositely arranged on the front side face and the rear side face in the first direction, and the first direction is the length direction of the mounting plate. In the whole installation process of the radiator and the IGBT, due to the existence of the tool, manual positioning is not needed any more, time and labor are saved in the installation process, and the problem of large installation deviation does not exist.

Description

Technical Field

[0001] This application relates to the field of mounting fixtures for electronic products, and more particularly to a fixture for mounting heat sinks and IGBTs. Background Technology

[0002] IGBTs are key components in electronic products, widely used in wind power, electric vehicles, photovoltaics, and other fields. Currently, these devices are increasingly miniaturized and denser. Consequently, the heat dissipation requirements for these electronic components are also increasing. They need to be mounted on heat sinks for heat dissipation, and ceramic plates and thermal grease need to be installed between the heat sink and the IGBT to improve heat transfer and electrical isolation. Finally, the heat sink assembly with the IGBT devices installed is soldered to the mounting holes on the PCB.

[0003] During installation, the IGBT, heatsink, ceramic substrate, and thermal grease must be in close contact; otherwise, heat dissipation may be affected. Insufficient heat dissipation can damage the entire device and render the system inoperable.

[0004] Existing technologies require manual installation of heat sinks and IGBTs, and the small size of these components makes them difficult to handle. Furthermore, the large number of IGBTs used on a single device makes precise positioning challenging. Individual installation is time-consuming, labor-intensive, and detrimental to efficient production. Excessive installation deviations can prevent the heat sink assembly from passing through the mounting holes on the PCB, affecting overall assembly. Utility Model Content

[0005] The main purpose of this application is to provide a tooling for installing heat sinks and IGBTs, aiming to solve the problems of time-consuming and labor-intensive installation and large installation deviations in the current installation of heat sinks and IGBTs.

[0006] To achieve the above objectives, this application provides a fixture for mounting a heat sink and an IGBT. The fixture includes a mounting plate and a plurality of pin limiting blocks, wherein the mounting plate has a front side and a rear side; the plurality of pin limiting blocks are respectively fixed on the front side and the rear side; wherein the plurality of pin limiting blocks are arranged in pairs at intervals in a first direction, and in the first direction, the pin limiting blocks are arranged opposite to each other on the front side and the rear side, and the first direction is the length direction of the mounting plate.

[0007] Optionally, the pin limiting block includes: a two-pin limiting block and a three-pin limiting block, wherein the two-pin limiting blocks are arranged in pairs on the front side and the rear side, and the positions of the two-pin limiting blocks arranged on the front side and the rear side are opposite; the three-pin limiting blocks are arranged in pairs on the front side and the rear side, and the positions of the three-pin limiting blocks arranged on the front side and the rear side are opposite.

[0008] Optionally, the two-pin limiting block includes: a limiting block body, two pin limiting slots, and a limiting part, wherein the two pin limiting slots are both formed on the limiting block body along a second direction, the second direction being the height direction of the mounting plate and intersecting with the first direction; the limiting part is disposed on the side of the limiting block body facing the mounting plate, and the limiting part is in contact with the mounting plate.

[0009] Optionally, the limiting block body is further provided with a through connecting hole, and the limiting block body is connected to the mounting plate through the connecting hole.

[0010] Optionally, the three-pin limiting block includes: a limiting block base, three limiting grooves, and a mating part, wherein the three limiting grooves are all formed on the limiting block base along a second direction, the second direction being the height direction of the mounting plate and intersecting with the first direction; the mating part is disposed on the side of the limiting block base facing the mounting plate, and the mating part is in contact with the mounting plate.

[0011] Optionally, the limiting block base is further provided with a through limiting hole, and the limiting block base is connected to the mounting plate through the limiting hole.

[0012] Optionally, the mounting plate includes: a mounting plate body and two blocking blocks, wherein the two blocking blocks are respectively disposed at both ends of the mounting plate body.

[0013] Optionally, both the end of the front side and the end of the rear side are provided with support members.

[0014] Optionally, each of the pin limiting blocks can be detachably connected to the front side and the rear side.

[0015] Optionally, each pair of said pin limiting blocks is attached together.

[0016] This application provides a fixture for mounting a heat sink and IGBTs. During installation, the heat sink is first placed between pin limiting blocks on the front and rear sides. Next, the ceramic plate, IGBT, and diodes are placed on their respective pin limiting blocks using thermal grease. Finally, pairs of IGBTs are secured to the heat sink using clamping tabs; similarly, pairs of diodes are also secured to the heat sink using clamping tabs. This completes the installation of the heat sink and IGBTs. The fixture is then pulled out from below, and the installed heat sink and IGBT assembly is inserted into mounting holes on the PCB and soldered. During the entire installation process, the fixture eliminates the need for manual positioning, saving time and effort and preventing significant installation deviations. Attached Figure Description

[0017] To more clearly illustrate the prior art and the present invention, the accompanying drawings used in the description of the prior art and the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other drawings from the provided drawings without any creative effort.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which this utility model can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0019] Figure 1 A schematic diagram of a tooling for mounting a heat sink and an IGBT provided in an embodiment of this application;

[0020] Figure 2 for Figure 1 Schematic diagram of the structure of the two-pin limiting block;

[0021] Figure 3 for Figure 1 Schematic diagram of the three-pin limiting block;

[0022] Figure 4 for Figure 1 Schematic diagram of the mounting plate in the middle;

[0023] Figure 5 This is a schematic diagram of the tooling used for mounting a heat sink and IGBT, provided as an embodiment of this application.

[0024] The components are as follows: 1. Heat sink; 3. Mounting plate; 301. Mounting plate body; 302. Blocking block; 4. Pin limiting block; 401. Two-pin limiting block; 402. Three-pin limiting block; 403. Limiting block body; 404. Pin limiting groove; 405. Limiting part; 406. Connecting hole; 407. Limiting block base; 408. Limiting groove; 409. Mating part; 410. Limiting hole; 5. Support; 6. Ceramic sheet; 7. Diode; 8. Pressing sheet.

[0025] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] 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.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] Figure 1 A schematic diagram of a tooling for mounting a heat sink and an IGBT provided in an embodiment of this application; Figure 2 for Figure 1 Schematic diagram of the structure of the two-pin limiting block; Figure 3 for Figure 1 Schematic diagram of the three-pin limiting block; Figure 4 for Figure 1 Schematic diagram of the mounting plate in the middle; Figure 5 This is a schematic diagram of the tooling used for mounting a heat sink and IGBT, provided as an embodiment of this application.

[0032] Please see Figures 1 to 5 This application provides a fixture for mounting a heat sink and an IGBT. The fixture may include a mounting plate 3 and a plurality of pin limiting blocks 4. The mounting plate 3 has a front side and a rear side. The plurality of pin limiting blocks 4 are fixed on the front side and the rear side respectively. The plurality of pin limiting blocks 4 are arranged in pairs at intervals along a first direction X. The pin limiting blocks 4 are arranged opposite to each other on the front side and the rear side along the first direction X, which is the length direction of the mounting plate 3.

[0033] Specifically, when installing the heatsink 1 and IGBTs, first place the heatsink 1 between the pin limiting blocks 4 on the front and rear sides. Next, place the ceramic plate 6, IGBTs, and diodes 7 onto the corresponding pin limiting blocks 4 using thermal grease. Finally, use clamping plates 8 to fix the paired IGBTs to the heatsink 1; similarly, use clamping plates 8 to fix the paired diodes 7 to the heatsink 1. This completes the installation of the heatsink 1 and IGBTs. Pull the entire fixture out from below, insert the installed heatsink 1 and IGBT assembly into the mounting holes on the PCB board, and solder them. During the entire installation process of the heatsink 1 and IGBTs, the fixture eliminates the need for manual positioning, saving time and effort and preventing large installation deviations.

[0034] In addition, the pin limiting blocks 4 on the front and rear sides are slightly offset in the first direction X. The advantage of this arrangement is that it prevents the screws on the pressure plate 8 from being too short and not securely connected, or from being too long and pressing against the ceramic plate 6, and it also reduces heat accumulation and enhances the heat dissipation effect of the heat sink 1.

[0035] It should be noted that the mounting plate 3 and the multiple pin limiting blocks 4 are both made of aluminum alloy 6061.

[0036] Please see Figure 1 The pin limiting block 4 may include a two-pin limiting block 401 and a three-pin limiting block 402. The two-pin limiting blocks 401 are arranged in pairs on the front side and the rear side, and the positions of the two-pin limiting blocks 401 on the front side and the rear side are opposite to each other. The three-pin limiting blocks 402 are arranged in pairs on the front side and the rear side, and the positions of the three-pin limiting blocks 402 on the front side and the rear side are opposite to each other.

[0037] In this embodiment, the two-pin limiting block 401 is used to mount the diode 7; the three-pin limiting block 402 is used to mount the IGBT. During installation, the two pins of the diode 7 are engaged with the two-pin limiting block 401; the three pins of the IGBT are engaged with the three-pin limiting block 402.

[0038] Furthermore, multiple sets of two-pin limiting blocks 401 and multiple sets of three-pin limiting blocks 402 can be configured. The specific number of two-pin limiting blocks 401 and three-pin limiting blocks 402 is determined according to the actual situation. It should be noted that the two-pin limiting blocks 401 and three-pin limiting blocks 402 are the same size. In this way, the two-pin limiting blocks 401 or three-pin limiting blocks 402 can be installed on any available hole on the mounting plate 3 to achieve multiple combinations and enhance the versatility of the tooling.

[0039] Please see Figure 2The two-pin limiting block 401 may include: a limiting block body 403, two pin limiting slots 404, and a limiting part 405. The two pin limiting slots 404 are both opened on the limiting block body 403 along the second direction Y, which is the height direction of the mounting plate 3 and intersects with the first direction X. The limiting part 405 is disposed on the side of the limiting block body 403 facing the mounting plate 3, and the limiting part 405 is in contact with the mounting plate 3.

[0040] The two pin limiting slots 404 of the two-pin limiting block 401 are used to cooperate with the two pins of the diode 7. The limiting part 405 can be perpendicular to the limiting block body 403, so that the limiting part 405 can be seamlessly connected with the elongated mounting plate 3.

[0041] In some other embodiments, the limiting part 405 may not be perpendicular to the limiting block body 403, as long as the limiting part 405 and the mounting plate 3 can be seamlessly connected.

[0042] It should be noted that the top of the limiting block body 403 has a notch for engaging with the ceramic plate 6. This notch facilitates the positioning of the ceramic plate 6. The limiting part 405 is a structure that protrudes towards the mounting plate 3, and its engagement with the top surface of the mounting plate 3 can be either a planar or inclined surface. However, it should be noted that the top surface of the limiting part 405 is horizontal, because this horizontal surface allows it to fit against the bottom of the heat sink 1, thus limiting the position of the heat sink 1.

[0043] Please see Figure 2 The limiting block body 403 is also provided with a through connection hole 406, and the limiting block body 403 is connected to the mounting plate 3 through the connection hole 406.

[0044] In this embodiment, under normal circumstances, there are two connecting holes 406 on the limiting block body 403, so that the limiting block body 403 can be more securely connected to the mounting plate 3.

[0045] In some embodiments, the connecting hole 406 can be a threaded hole, and the limiting block body 403 can be connected to the mounting plate 3 by bolts. This connection method is more reliable and less likely to fall off. In other embodiments, the connecting hole 406 can be a straight hole, and the limiting block body 403 can be connected to the mounting plate 3 by a pin. This connection method is convenient for disassembly and assembly.

[0046] It should be noted that the connection hole 406 is located below the limit block body 403. This ensures that the limit block body 403 is securely connected and that the connection hole 406 does not interfere with the pin limit slot 404 and the limit part 405.

[0047] Please see Figure 3 The three-pin limiting block 402 may include: a limiting block base 407, three limiting grooves 408, and a mating part 409. The three limiting grooves 408 are all opened on the limiting block base 407 along the second direction Y, which is the height direction of the mounting plate 3 and intersects with the first direction X. The mating part 409 is disposed on the side of the limiting block base 407 facing the mounting plate 3, and the mating part 409 fits against the mounting plate 3.

[0048] In this embodiment, the three limiting slots 408 of the three-pin limiting block 402 are used to mate with the three pins of the IGBT. Similar to the two-pin limiting block 401 described above, the mating part 409 can be perpendicular to the limiting block base 407, so that the mating part 409 can seamlessly connect with the elongated mounting plate 3. Similarly, in other embodiments, the mating part 409 may not be perpendicular to the limiting block base 407, but it must still achieve seamless connection between the mating part 409 and the mounting plate 3.

[0049] Furthermore, a notch is provided at the top of the limiting block base 407 for engaging with the ceramic plate 6. This notch facilitates the limiting of the ceramic plate 6. The mating part 409 is a structure that protrudes towards the mounting plate 3, and its engagement with the top surface of the mounting plate 3 can be either planar or inclined. However, it should be noted that the top surface of the mating part 409 is horizontal, because this horizontal surface allows it to fit against the bottom of the heat sink 1, thereby limiting the heat sink 1.

[0050] In addition, after the two-pin limiting block 401 and the three-pin limiting block 402 are both connected to the mounting plate 3, the top surface of the limiting part 405 of the two-pin limiting block 401 and the top surface of the mating part 409 of the three-pin limiting block 402 are on the same horizontal plane. This arrangement allows the bottom of the heat sink 1 to directly contact the horizontal plane, which is beneficial for limiting the heat sink 1.

[0051] Please see Figure 3 The limiting block base 407 is also provided with a through limiting hole 410, and the limiting block base 407 is connected to the mounting plate 3 through the limiting hole 410.

[0052] In general, the limiting hole 410 on the limiting block base 407 is set to two, so that the limiting block base 407 can be more reliably connected to the mounting plate 3.

[0053] In some embodiments, the limiting hole 410 can be a threaded hole, allowing the limiting block base 407 to be connected to the mounting plate 3 via bolts. Bolt connections are more secure and less prone to detachment. In other embodiments, the limiting hole 410 can also be a straight hole, allowing the limiting block base 407 to be connected to the mounting plate 3 via a pin connection, facilitating later assembly and disassembly.

[0054] It should be noted that the limiting hole 410 is located below the limiting block base 407. This ensures that the limiting block base 407 is securely connected and that the setting of the limiting hole 410 does not interfere with the setting of the limiting groove 408 and the mating part 409.

[0055] Please see Figure 4 The mounting plate 3 may include a mounting plate body 301 and two blocking blocks 302, wherein the two blocking blocks 302 are respectively disposed at both ends of the mounting plate body 301.

[0056] Specifically, the mounting plate body 301 is used to connect the pin limiting blocks 4. The blocking blocks 302 set at both ends of the mounting plate body 301 are used to limit the heat sink 1, so that the heat sink 1 will not slide in the first direction X, thus ensuring the stability of the entire system when installing the heat sink 1 and IGBT.

[0057] In some embodiments, a base may be provided at the bottom of the mounting plate 3. The design of the base can make the mounting plate 3 more stable. When installing the heat sink 1 and IGBT, the mounting plate 3 will not shake or tip over because of the presence of the base.

[0058] Furthermore, the base can be a plate-like structure. The base is positioned a distance from the bottom of the pin limiting block 4 so that it does not interfere with the connection between the pin limiting block 4 and the mounting plate body 301. The base can also be a trapezoidal block structure, etc. Regardless of the base's structure, its placement must ensure the mounting plate body 301 is stable and does not interfere with the installation of any components.

[0059] Please see Figure 1 , Figure 5 Support members 5 are provided at the ends of both the front and rear sides.

[0060] In this embodiment, the support member 5 is an L-shaped plate structure. By providing support members 5 at both the front and rear ends of the mounting plate 3, the entire fixture becomes more stable. No shaking occurs during the installation of the heat sink 1 and IGBT, facilitating the installation of the heat sink 1 and IGBT and effectively improving installation efficiency.

[0061] It should be noted that the support member 5 has adapter holes, and the support member 5 and the mounting plate 3 can be fixed together by bolts. Fixing the support member 5 to the mounting plate 3 by bolts facilitates the later disassembly and assembly of the support member 5.

[0062] In some embodiments, the support member 5 may also be integrally formed with the mounting plate 3. Making the support member 5 and the mounting plate 3 integrally formed avoids the tedious work of installing the support member 5 onto the mounting plate 3, thus improving the assembly efficiency of the entire tooling.

[0063] Furthermore, each pin limiting block 4 is detachably connected to the front and rear sides.

[0064] The detachable connection between each pin limiting block 4 and the mounting plate 3 facilitates the connection of different pin limiting blocks 4 on the mounting plate 3, thus expanding the practicality of the tooling.

[0065] In some embodiments, each pin limiting block 4 is bolted to the mounting plate 3; in other embodiments, each pin limiting block 4 is connected to the mounting plate 3 via pins. Regardless of how the pin limiting blocks 4 are connected to the mounting plate 3, it is only necessary to ensure that they are detachable while also ensuring the reliability of the connection.

[0066] It should be noted that after fixing each pin limiting block 4 to the front and rear sides, the positioning fixture can be formed. When using this fixture to connect the heat sink 1 and the IGBT, firstly, place the lower part of the heat sink 1 between the two rows of pin limiting blocks 4. Then, fix the paired diodes 7 or IGBTs to the heat sink 1 using the clamping plates 8. When fixing the diodes 7 or IGBTs to the heat sink 1, since the two ends of the clamping plates 8 abut against the diodes 7 or IGBTs, damage to the diodes 7 and IGBTs will not be easily caused. Moreover, the limiting of the diodes 7 and IGBTs is reliable, so that the diodes 7 and IGBTs can be reliably connected to the heat sink 1 to complete the assembly of each component.

[0067] Please see Figure 1 , Figure 5 Each pair of pin limiting blocks 4 are attached together.

[0068] In this embodiment, the pin limiting blocks 4 are of two types: limiting blocks for mounting diodes 7 and limiting blocks for mounting IGBTs. The fit between each pair of pin limiting blocks 4 makes the entire device structure more compact.

[0069] In other embodiments, when designing the structure based on the package size and position of the IGBT and diode 7, each pair of pin limiting blocks 4 may not be attached together.

[0070] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A tooling for mounting a heat sink and an IGBT, characterized in that, include: Mounting plate (3) has a front side and a rear side; Multiple pin limiting blocks (4) are fixed on the front side and the rear side respectively; In this arrangement, multiple pin limiting blocks (4) are arranged in pairs at intervals in a first direction. In the first direction, the pin limiting blocks (4) are arranged opposite to each other on the front side and the rear side. The first direction is the length extension direction of the mounting plate (3).

2. The tooling for mounting a heat sink and IGBT according to claim 1, characterized in that, The pin limiting block (4) includes: Two-pin limiting blocks (401) are arranged in pairs on the front side and the rear side, and the positions of the two-pin limiting blocks (401) on the front side and the rear side are opposite to each other; Three-pin limiting blocks (402) are arranged in pairs on the front side and the rear side, and the positions of the three-pin limiting blocks (402) on the front side and the rear side are opposite to each other.

3. The tooling for mounting a heat sink and IGBT according to claim 2, characterized in that, The two-pin limiting block (401) includes: Limiting block body (403); Two pin limiting slots (404) are both opened on the limiting block body (403) along the second direction, which is the height direction of the mounting plate (3) and intersects with the first direction; A limiting part (405) is provided on the side of the limiting block body (403) facing the mounting plate (3), and the limiting part (405) is in contact with the mounting plate (3).

4. The tooling for mounting a heat sink and IGBT according to claim 3, characterized in that, The limiting block body (403) is also provided with a through connecting hole (406), and the limiting block body (403) is connected to the mounting plate (3) through the connecting hole (406).

5. The tooling for mounting a heat sink and IGBT according to claim 2, characterized in that, The three-pin limiting block (402) includes: Limiting block base (407); Three limiting grooves (408) are all opened on the limiting block base (407) along the second direction, which is the height direction of the mounting plate (3) and intersects with the first direction; A mating part (409) is provided on the side of the limiting block base (407) facing the mounting plate (3), and the mating part (409) fits against the mounting plate (3).

6. The tooling for mounting a heat sink and IGBT according to claim 5, characterized in that, The limiting block base (407) is also provided with a through limiting hole (410), and the limiting block base (407) is connected to the mounting plate (3) through the limiting hole (410).

7. The tooling for mounting a heat sink and IGBT according to claim 1, characterized in that, The mounting plate (3) includes: Mounting plate body (301); Two blocking blocks (302) are respectively disposed at both ends of the mounting plate body (301).

8. The tooling for mounting a heat sink and IGBT according to claim 1, characterized in that, Both the end of the front side and the end of the rear side are provided with support members (5).

9. The tooling for mounting a heat sink and IGBT according to claim 1, characterized in that, Each of the pin limiting blocks (4) is detachably connected to the front side and the rear side.

10. The tooling for mounting a heat sink and IGBT according to claim 1, characterized in that, Each pair of pin limiting blocks (4) are attached together.

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