Power module capable of preventing Pin from bending

Abstract

The utility model discloses a power module capable of preventing Pins from being bent, and belongs to the technical field of semiconductors. Comprising a device box, a Pin needle is arranged in the device box, and telescopic clamping blocks are arranged on the two sides of the Pin needle; and the top plate is detachably installed above the device box, a through hole is formed in the top plate, and the Pin can movably penetrate through the through hole based on stretching and retracting of the clamping block. The beneficial effects of the above technical scheme are that the telescopic clamping blocks are attached to the inner walls of the corresponding through holes, so that the Pin body is not liable to shake, and the problem that the top of the Pin is liable to bend is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of semiconductors, in particular to a power module for preventing pin bending. Background Art

[0002] An IGBT (Insulated Gate Bipolar Transistor) module is a composite fully controlled voltage-driven power semiconductor device composed of a BJT (Bipolar Junction Transistor) and a MOS (Metal-Oxide-Semiconductor). It has the advantages of both the high input impedance of the MOS and the low conduction voltage drop of the GTR (Giant Transistor).

[0003] When processing an IGBT module, pins need to be installed. For example, in the prior art, a Chinese utility model patent with the publication number CN214152890U discloses an IGBT module, which includes a base provided with mounting holes; pins installed in the mounting holes; and a connecting coating disposed between the pins and the base. The pins are fixed in the mounting holes through the adhesive force generated by the connecting coating. In this IGBT module, on the basis of the conventional mechanical connection between the pins and the base, the adhesive force generated by the connecting coating can greatly improve the connection force between the two on the basis of simplifying the process.

[0004] Although the above technical solution can achieve a better connection effect through the adhesive force generated by the connecting coating, during the use of the IGBT module, the top of the pin is exposed outside the orifice plate. When the pin is touched during use, the pin will be bent, reducing the stability of the pin during use. Seriously, it will also affect the use effect of the IGBT module and shorten the service life of the IGBT module. Content of the Utility Model

[0005] The purpose of the utility model is to provide a power module for preventing pin bending to solve the above technical problems;

[0006] A power module for preventing pin bending includes:

[0007] A device box, inside which pins are provided, and retractable blocks are provided on both sides of the pins;

[0008] A top plate detachably installed above the device box, with through holes formed on the top plate, and the pins can movably pass through the through holes based on the expansion and contraction of the blocks.

[0009] Preferably, a retractable space is provided inside the Pin pin, and the retractable space includes a sliding opening and a moving groove adjacent to the sliding opening;

[0010] A slide rail is provided on the inner wall of the sliding opening along a first direction.

[0011] Preferably, the inside of the Pin pin is further provided with

[0012] a slide bar, a first end of the slide bar is connected to the clamping block, and a second end of the slide bar is connected to a protection column;

[0013] a spring, which is arranged around the outside of the protection column, a first end of the spring is connected to the inner wall of the moving groove, and a second end of the spring is connected to the slide bar. The spring drives the clamping block to move in the retractable space based on the telescopic movement.

[0014] Preferably, a protection groove is further provided inside the Pin pin along the first direction, and the protection column is slidably arranged in the protection groove.

[0015] Preferably, a sliding groove is provided outside the protection groove;

[0016] Sliding blocks are connected to both sides of the first end of the protection column, and the sliding blocks are slidably arranged in the sliding groove.

[0017] Preferably, it further includes a base, the base is located below the device box, and mounting holes are provided at four corners of the base.

[0018] Preferably, a positioning plate is provided between the mounting holes and the device box.

[0019] Preferably, an inclined opening is provided at one end of the through hole facing the base.

[0020] Preferably, a mounting tube is provided on the device box close to the positioning plate.

[0021] Preferably, a control chip is further provided inside the device box, and the control chips are connected by signal lines.

[0022] The beneficial effect of the present utility model is that by fitting the retractable clamping block with the inner wall of the corresponding through hole, it is ensured that the Pin pin body is not easily shaken, and the problem that the top of the Pin pin is easily bent is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is an overall structural schematic diagram of the power module for preventing the Pin pin from bending of the present utility model;

[0024] Figure 2 is a sectional view of the top plate of the present utility model;

[0025] Figure 3 is Figure 2 an enlarged view of part A in

[0026] Figure 4 a schematic structural view of the control chip of the present utility model.

[0027] In the attached drawings: 1, base; 11, mounting hole; 12, positioning plate; 2, device box; 21, mounting pipe; 22, control chip; 3, top plate; 31, through hole; 4, Pin needle; 41, sliding port; 42, clamping block; 43, slide rail; 44, slide bar; 45, moving groove; 46, protection post; 47, protection groove; 48, chute; 481, slider; 49, spring. Detailed implementation mode

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0030] Next, the present utility model will be further described in conjunction with the attached drawings and specific embodiments, but it shall not be used as a limitation to the present utility model.

[0031] A power module for preventing Pin needles from being bent, as Figure 1 , Figure 2 shown, includes

[0032] a device box 2, with Pin needles 4 arranged inside the device box 2, and retractable clamping blocks 42 arranged on both sides of the Pin needles 4;

[0033] a top plate 3, detachably installed above the device box 2, with through holes 31 opened on the top plate 3, and the Pin needles 4 can pass through the through holes 31 movably based on the expansion and contraction of the clamping blocks 42.

[0034] Specifically, the present utility model provides a power module for preventing Pin needles from being bent. The device box 2 is used to carry the internal structure of the IGBT module. A plurality of through holes 31 are opened on the top surface of the top plate 3. The positions of the plurality of Pin needles 4 match those of the plurality of through holes 31. Through the retractable clamping blocks 42 outside the Pin needles 4, the Pin needles 4 can be clamped with the corresponding through holes 31 and fit against the inner walls of the through holes 31, ensuring that the bodies of the Pin needles 4 are not easily shaken and solving the problem that the tops of the Pin needles 4 are easily bent.

[0035] In a preferred embodiment, referring to Figure 3 , the inside of the Pin pin 4 is provided with a retractable space, and the retractable space includes a sliding port 41 and a moving groove 45 adjacent to the sliding port 41;

[0036] On the inner wall of the sliding port 41, a slide rail 43 is provided along the first direction;

[0037] The inside of the Pin pin 4 is also provided with

[0038] a slide bar 44, the first end of the slide bar 44 is connected to the clamping block 42, and the second end of the slide bar 44 is connected to the protection column 46;

[0039] a spring 49, which is wound around the outside of the protection column 46, the first end of the spring 49 is connected to the inner wall of the moving groove 45, and the second end of the spring 49 is connected to the slide bar 44. The spring 49 drives the clamping block 42 to move in the retractable space based on its telescopic movement.

[0040] Specifically, sliding ports 41 are provided inside the Pin pins 4. Two groups of slide rails 43 are provided on both sides of the inner wall of each sliding port 41. A slide bar 44 is slidably arranged in each group of slide rails 43. The outside of the slide bar 44 is fixedly arranged with the corresponding clamping block 42. Moving grooves 45 are provided on the upper and lower sides of the inner wall of the sliding port 41. One side of each slide bar 44 is fixedly arranged with the corresponding two springs 49, and one end of each spring 49 is fixedly arranged with the inner wall of the corresponding moving groove 45.

[0041] The spring 49 is used to drive the corresponding clamping block 42 to fit against the inner wall of the through hole 31. The clamping block 42 is semi-circular. Under the elastic effect of the corresponding spring 49, it is easier to fit against the inner wall of the through hole 31, making the body of the Pin pin 4 not easy to shake, effectively solving the problem that the top of the Pin pin 4 is prone to bending, and thus achieving the effect of supporting the top of the Pin pin 4 and making it not easy to bend.

[0042] In a preferred embodiment, a protection groove 47 is further provided inside the Pin pin 4 along the first direction, and the protection column 46 is slidably arranged in the protection groove 47;

[0043] A sliding groove 48 is provided outside the protection groove 47;

[0044] On both sides of the first end of the protection column 46, sliding blocks 481 are connected, and the sliding blocks 481 are slidably arranged in the sliding groove 48.

[0045] Specifically, on one side of the inner wall of the moving groove 45, two protection grooves 47 are correspondingly provided for the corresponding springs 49. On the inner walls of the protection grooves 47, protection columns 46 are slidably arranged. The other ends of the protection grooves 47 are fixedly arranged with one side of the corresponding slide bars 44. On the upper and lower sides of the protection grooves 47, sliding grooves 48 are provided. On the inner walls of the sliding grooves 48, sliders 481 are slidably arranged. One side of the two corresponding sliders 481 close to each other is fixedly arranged with the corresponding protection column 46.

[0046] When installing the top plate 3 on the top of the device box 2, the through hole 31 presses the clamping block 42. The clamping block 42 retracts into the Pin needle 4 under the effect of the spring 49. Then, under the action of the spring 49, it drives the slide bar 44 to move, thereby driving the clamping block 42 to slide out of the Pin needle 4, so that the clamping block 42 fits the inner wall of the corresponding through hole 31, making the Pin needle 4 not easy to shake, achieving the effect of driving the clamping block 42. Among them, the protection column 46 slides in the protection groove 47 under the limiting effect of the sliding groove 48 and the slider 481, so as to be able to limit the slide bar 44 and the connected clamping block 42, making it only able to move linearly, and preventing the clamping block 42 from sliding out of the Pin needle 4. The protection column 46 can also protect the spring 49, further preventing the spring 49 from bending.

[0047] In a preferred embodiment, it further includes a base 1. The base 1 is located below the device box 2. Mounting holes 11 are provided at the four corners of the base 1;

[0048] A positioning plate 12 is provided between the mounting hole 11 and the device box 2;

[0049] One end of the through hole 31 facing the base 1 is provided with an inclined opening outward;

[0050] The device box 2 is provided with a mounting tube 21 close to the positioning plate 12;

[0051] Refer to Figure 4 , and a control chip 22 is further provided in the device box 2. The control chips 22 are connected by signal lines.

[0052] Specifically, when the device is installed on other devices, the four positioning plates 12 are used to position and fix the device. Cooperating with the mounting tubes 21 at the four corners of the device box 2, it is convenient to install through the mounting holes 11, improving the comfort during the installation of the device. The bottom of the through hole 31 is inclined. Even if the Pin needle 4 is inclined, it can still extend out of the through hole 31, improving the practicability of the device.

[0053] Refer to Figures 1 to 3, when the present utility model fixes the through hole 31 to the top of the device box 2, the semi-circular clamping block 42 first slides inside the Pin pin 4 under the elastic action of the corresponding spring 49, and then slides out under the elastic effect of the spring 49, so that the clamping block 42 fills the corresponding through hole 31, and under the elastic effect of the spring 49, the clamping block 42 fits against the inner wall of the through hole 31, making the Pin pin 4 not easy to shake, and solving the technical problem that the top of the Pin pin is easily bent.

[0054] During installation, the four positioning plates 12 are used to position and fix the device, which facilitates installation through the installation holes 11. When installing the top plate 3 to the top of the device box 2, the through hole 31 squeezes the semi-circular clamping block 42, and the clamping block 42 retracts into the Pin pin 4 under the effect of the spring 49. Then, under the action of the spring 49, the slide bar 44 is driven to move, thereby driving the clamping block 42 to slide out of the Pin pin 4, so that the clamping block 42 fits against the inner wall of the corresponding through hole 31, making the Pin pin 4 not easy to shake.

[0055] The present utility model limits the protection column 46 by providing sliding grooves 48 on the upper and lower sides of the protection groove 47 and fixedly arranging the corresponding two sliding blocks 481 with the corresponding protection column 46, thereby limiting the clamping block 42 and improving the stability during the use of the device.

[0056] In summary, the present application provides a power module for preventing the bending of Pin pins. Due to the adoption of a plurality of semi-circular clamping blocks 42, the clamping blocks 42 can fit against the inner walls of the corresponding through holes 31 under the elastic effect of the corresponding springs 49, making the Pin pins 4 not easy to shake, solving the problem that the tops of the Pin pins 4 are easily bent, and further achieving the technical effect of supporting the tops of the Pin pins 4 to make them not easy to bend.

[0057] The above are only the preferred embodiments of the present utility model, and do not limit the implementation manners and protection scope of the present utility model. For those skilled in the art, it should be realized that all equivalent replacements and obvious changes made by using the description and illustration content of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A power module for preventing the bending of Pin pins, characterized in that Including, a device box (2), inside which there is a Pin (4), and on both sides of the Pin (4) there are retractable clamping blocks (42); a top plate (3), detachably mounted above the device box (2), with a through hole (31) opened on the top plate (3), and the Pin (4) can movably pass through the through hole (31) based on the expansion and contraction of the clamping block (42).

2. The power module for preventing the bending of the Pin pins according to claim 1, wherein Inside the Pin (4) there is a retractable space, and the retractable space includes a sliding opening (41) and a moving groove (45) adjacent to the sliding opening (41); On the inner wall of the sliding opening (41), a slide rail (43) is provided along a first direction.

3. The power module for preventing the bending of the Pin pins according to claim 2, characterized in that, Inside the Pin (4) there is also provided a slide bar (44), the first end of the slide bar (44) is connected to the clamping block (42), and the second end of the slide bar (44) is connected to a protection column (46); a spring (49), surrounding the outside of the protection column (46), the first end of the spring (49) is connected to the inner wall of the moving groove (45), and the second end of the spring (49) is connected to the slide bar (44), and the expansion and contraction movement of the spring (49) drives the clamping block (42) to move in the retractable space.

4. The power module for preventing the bending of the Pin according to claim 3, characterized in that Inside the Pin (4) along the first direction there is also a protection groove (47), and the protection column (46) is slidably arranged in the protection groove (47).

5. The power module for preventing bending of the Pin pins according to claim 4, characterized in that, Outside the protection groove (47) there is a chute (48); On both sides of the first end of the protection column (46) there are connected sliders (481), and the sliders (481) are slidably arranged in the chute (48).

6. The power module for preventing the bending of the Pin pins according to claim 1, characterized in that, It further includes a base (1), the base (1) is located below the device box (2), and mounting holes (11) are opened at the four corners of the base (1).

7. The power module for preventing the bending of the Pin pins according to claim 6, wherein Between the mounting hole (11) and the device box (2) there is a positioning plate (12).

8. The power module for preventing Pin pins from bending according to claim 6, wherein One end of the through hole (31) facing the base (1) is opened with an inclined opening outward.

9. The power module for preventing the bending of the Pin pins according to claim 7, characterized in that, On the device box (2) there is an installation pipe (21) close to the positioning plate (12).

10. The power module for preventing the bending of the Pin pins according to claim 1, characterized in that, Inside the device box (2) there is also a control chip (22), and the control chips (22) are connected through signal lines.

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