Mounting and fixing structure of single-tube IGBT (Insulated Gate Bipolar Translator)

Abstract

The utility model discloses a mounting and fixing structure of a single-tube IGBT (Insulated Gate Bipolar Transistor), which comprises a radiator, a fixing plate fixed on one side of the radiator through bolts, a single-tube IGBT and a fixing mechanism arranged on the fixing plate, and a fixing piece fixed on the fixing plate and used for fixing the single-tube IGBT through the fixing piece, according to the utility model, when the single-tube IGBT is fixed, the single-tube IGBT is inserted into the fixing piece of the fixing plate from top to bottom, the clamping block is pushed through the first telescopic spring in the fixing piece, the single-tube IGBT is fixed, and in addition, the clamping block is fixedly connected with the clamping block through the first telescopic spring in the fixing piece. The single-tube IGBT is fixed on the fixing plate by matching with the protrusion at one end of the fixing piece and the non-slip mat at one side of the clamping block, so that the single-tube IGBT can be quickly fixed on the fixing plate through the mode, and subsequent workers can conveniently disassemble the single-tube IGBT.

Description

Technical Field

[0001] The utility model belongs to the technical field of semiconductors, and in particular relates to an installation and fixing structure of a single-tube IGBT. Background Art

[0002] IGBT has the advantages of voltage-type drive, small drive power, high switching speed, low saturation voltage drop, and high voltage and high current resistance. It is an ideal high-power switching device. In the prior art, when a single-tube IGBT is installed on a PCB board, it is necessary to first open a hole on the PCB board for passing a screw, and then pass the pin of the single-tube IGBT through the pad hole on the PCB board. Then, the single-tube IGBT is fixed to the heat sink by tightening the screw, and then the pin of the single-tube IGBT is welded to the pad hole of the PCB board to complete the fixation of the single-tube IGBT.

[0003] Chinese patent announcement number CN211982229U discloses a mounting and fixing structure of a single-tube IGBT, comprising a single-tube IGBT, the structure of the single-tube IGBT is: comprising a single-tube IGBT body locked on an external heat sink, and a pin bent forward is installed at the end of the single-tube IGBT body; a fixing block is fixed on the heat sink, a support portion extends forward on the fixing block, a through hole is opened on the support portion, the pin passes through the support portion forward through the through hole, and the front end of the pin extending out is welded to the external PCB board; when installing, first apply thermal conductive silicone grease on the single-tube IGBT body, and lock it on the heat sink, then the fixing block is sleeved on the pin through the through hole on the support portion, and the fixing block is locked on the heat sink, and finally the extended pin is welded to the external PCB board; the utility model realizes the fixing and orderly arrangement of the pins through the fixing block, eliminates the need to open holes on the existing PCB board when fixing the single-tube IGBT body, and greatly facilitates the overall routing and device layout on the PCB board.

[0004] With respect to the above-mentioned related technologies, the inventors have found that there are at least the following problems in the technology: the fixing mechanism fixes the single-tube IGBT to the surface of the radiator through a fixing block, but the fixing mechanism fixes multiple single-tube IGBTs through one fixing block. When one of the single-tube IGBTs needs to be replaced, the fixing block needs to be disassembled as a whole, and then the single single-tube IGBT needs to be replaced. For the subsequent installation, the pins of the multiple single-tube IGBTs need to be calibrated with the multiple through holes of the fixing block before they can be fixed. As the use time of the single-tube IGBT increases, the pins may deform or bend, which increases the difficulty of installation and is extremely inconvenient to use. In addition, the disassembly and assembly of the fixing block still relies on fasteners, and other tools need to be used for disassembly, which has great limitations. For this reason, we provide an installation and fixing structure for a single-tube IGBT, which can be quickly disassembled and replaced for a single single-tube IGBT, and at the same time, no other tools are required for disassembly and assembly. Utility Model Content

[0005] The purpose of the utility model is to provide a mounting and fixing structure of a single-tube IGBT to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a single-tube IGBT installation and fixing structure, comprising a radiator, a fixing plate fixed to one side of the radiator by bolts, a single-tube IGBT and a fixing mechanism being arranged on the fixing plate, and further comprising:

[0007] A fixing piece fixed on the fixing plate, and the fixing plate fixes the single-tube IGBT through the fixing piece, a first telescopic spring is fixedly connected inside the fixing piece, and a clamping block is fixedly connected to the end of the first telescopic spring;

[0008] A fixing seat is symmetrically arranged on the fixing plate, and a fixing mechanism is fixed to the fixing plate through the fixing seat. The fixing mechanism includes a fixing groove and a fixing block for limiting and fixing the single-tube IGBT, and a through hole is opened through the surface of the fixing block.

[0009] As a preferred implementation, a protrusion for limiting the single-tube IGBT is provided at the end of the fixing member, and an anti-slip pad is fixedly connected to the side of the clamping block.

[0010] As a preferred implementation, a hemispherical clamping groove is provided inside the fixing groove, and clamping blocks engaging with the clamping groove are fixedly connected to both sides of the fixing block.

[0011] As a preferred embodiment, a nesting groove is provided through the interior of the fixing seat, and nesting blocks cooperating with the nesting groove are movably provided on both sides of the fixing mechanism.

[0012] As a preferred embodiment, grooves are provided on both sides of the fixing mechanism, and a second telescopic spring is fixedly connected inside the groove, a moving block is fixedly connected to the end of the second telescopic spring, and the nesting block is fixed to one side of the moving block.

[0013] As a preferred embodiment, a sliding groove is provided on the surface of the fixing mechanism, and a sliding rod is slidably arranged in the sliding groove, and the end of the sliding rod is fixedly connected to the moving block.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model fixes the single-tube IGBT by inserting the single-tube IGBT into the fixing piece of the fixing plate from top to bottom, and fixing the single-tube IGBT by pushing the clamping block through the first telescopic spring inside the fixing piece, and fixing the single-tube IGBT on the fixing plate by cooperating with the protrusion at one end of the fixing piece and the anti-skid pad on one side of the clamping block. In this way, the single-tube IGBT can be quickly fixed on the fixing plate, and it is convenient for subsequent staff to disassemble it.

[0016] 2. According to the utility model, after the single-tube IGBT is fixed to the fixing plate by the fixing piece, the fixing mechanism is embedded into the nesting groove of the fixing seat through the nesting blocks on both sides, so that the fixing mechanism is fixed to the fixing plate, and the through holes on the surface of the fixing block are aligned with the pins of the single-tube IGBT, and then the fixing block is inserted into the fixing groove. The fixing block is fixed in the fixing groove through the cooperation of the clamping block and the clamping groove, and then the single-tube IGBT is further restricted and fixed, so that it is fixed to the fixing plate and is not easy to fall off. In this way, the single-tube IGBT can be stably fixed without the cooperation of other tools, and when disassembling a single single-tube IGBT, it is only necessary to pull out the corresponding fixing block and then pull the single-tube IGBT upward to disassemble the single-tube IGBT. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is an enlarged structural diagram of point A of the structure of the utility model;

[0019] Figure 3 This is an enlarged structural diagram of position B of the utility model structure;

[0020] Figure 4 For the utility model structure Figure 1 Front view.

[0021] In the figure: 1, heat sink; 2, fixing plate; 21, fixing piece; 211, first telescopic spring; 212, clamping block; 213, anti-skid pad; 22, fixing seat; 221, nesting groove; 3, single-tube IGBT; 4, fixing mechanism; 41, groove; 42, second telescopic spring; 43, moving block; 44, nesting block; 45, slide groove; 46, slide rod; 47, fixing groove; 471, clamping groove; 48, fixing block; 481, clamping block; 482, through hole. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the embodiments.

[0023] The following examples are used to illustrate the present invention, but cannot be used to limit the scope of protection of the present invention. The conditions in the examples can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0024] See also Figure 1-4The utility model provides a single-tube IGBT installation and fixing structure, including a radiator 1, a fixing plate 2 is fixed to one side of the radiator 1 by bolts, a single-tube IGBT 3 and a fixing mechanism 4 are arranged on the fixing plate 2, and also includes:

[0025] A fixing member 21 fixed on the fixing plate 2, and the fixing plate 2 fixes the single-tube IGBT 3 through the fixing member 21, a first telescopic spring 211 is fixedly connected inside the fixing member 21, and a clamping block 212 is fixedly connected to the end of the first telescopic spring 211;

[0026] The fixing seat 22 is symmetrically arranged on the fixing plate 2, and the fixing mechanism 4 is fixed to the fixing plate 2 through the fixing seat 22. The fixing mechanism 4 includes a fixing groove 47 and a fixing block 48 for limiting and fixing the single tube IGBT3, and a through hole 482 is opened on the surface of the fixing block 48.

[0027] By adopting the above technical solution: when fixing the single-tube IGBT3, the fixing plate 2 is fixed to one end of the radiator 1, and then the single-tube IGBT3 is inserted into the interior of the fixing member 21 from top to bottom, and the single-tube IGBT3 is fixed by the first telescopic spring 211 and the clamping block 212 in the fixing member 21, and then the fixing mechanism 4 is fixed to the fixing plate 2 through the fixing seat 22, and the single-tube IGBT3 is further restricted and fixed by the fixing block 48, so as to ensure the stability of the single-tube IGBT3 on the fixing plate 2. This method is convenient for the staff to quickly install the single-tube IGBT3, and no other tools are required to install the single-tube IGBT3.

[0028] In this embodiment, a protrusion for limiting the single-tube IGBT3 is provided at the end of the fixing member 21, and an anti-skid pad 213 is fixedly connected to the side of the clamping block 212; by providing the protrusion and the anti-skid pad 213, after the single-tube IGBT3 is inserted into the fixing member 21, it is limited by the protrusion at the end of the fixing member 21, and the protective pad 213 on one side of the clamping block 212 is cooperated to prevent the single-tube IGBT3 from sliding out from the front.

[0029] In this embodiment, a hemispherical slot 471 is provided inside the fixing groove 47, and blocks 481 engaging with the slot 471 are fixedly connected on both sides of the fixing block 48; by providing the block 481 and the slot 471, the fixing block 48 is embedded in the slot 471 through the block 481, and is thus fixed inside the fixing groove 47. This method facilitates the disassembly and assembly of the fixing block 48, and the single-tube IGBT3 is fixed by the fixing block 48.

[0030] In this embodiment, a nesting groove 221 is formed inside the fixing seat 22, and nesting blocks 44 that cooperate with the nesting groove 221 are movably provided on both sides of the fixing mechanism 4; by providing the nesting groove 221 and the nesting block 44, the fixing mechanism 4 is fixed on the fixing plate 2, and the nesting blocks 44 in the grooves 41 on both sides are nested in the nesting groove 221, so that it can be quickly fixed on the fixing plate 2, without the need for other fasteners and tools to cooperate in fixing.

[0031] In this embodiment, grooves 41 are provided on both sides of the fixing mechanism 4, and a second telescopic spring 42 is fixedly connected inside the groove 41, a moving block 43 is fixedly connected to the end of the second telescopic spring 42, and a nesting block 44 is fixed to one side of the moving block 43; by setting the second telescopic spring 42 and the moving block 43, when the fixing mechanism 4 is fixed to the fixing plate 2 in conjunction with the fixing seat 22, the moving block 43 is pushed by the second telescopic spring 42, so that the nesting block 44 is embedded in the nesting groove 221, thereby fixing the fixing mechanism 4.

[0032] In this embodiment, a slide groove 45 is provided on the surface of the fixing mechanism 4, and a slide rod 46 is slidably provided in the slide groove 45, and the end of the slide rod 46 is fixedly connected to the moving block 43; by providing the slide groove 45 and the slide rod 46, when disassembling the fixing mechanism 4, it is only necessary to pull the slide rod 46 in the slide groove 45 on the fixing mechanism 4, so that the slide rod 46 drives the moving block 43 and the nesting block 44 to move and be accommodated in the groove 41. At this time, the nesting block 44 moves out of the nesting groove 221, and the fixing mechanism 4 can be taken out from the fixing plate 2, so that the staff can disassemble the fixing mechanism 4 conveniently, and then facilitate the disassembly of all single-tube IGBT3.

[0033] The working principle and use process of the utility model are as follows: when in use, the fixing plate 2 is fixed to one side of the radiator 1 by bolts or welding, and then the single-tube IGBT 3 is inserted into the fixing piece 21 from top to bottom, and the end of the single-tube IGBT 3 pushes the clamping block 212 to squeeze the first telescopic spring 211 to contract until the single-tube IGBT 3 is completely inserted into the fixing piece 21, and the first telescopic spring 211 pushes the clamping block 212 to cooperate with the anti-slip pad 213, so that the single-tube IGBT 3 is fixed on the fixing plate 2 through the fixing piece 21;

[0034] After that, the fixing mechanism 4 is aligned with the fixing seat 22 and inserted between the fixing seats 22. The moving block 43 is pushed by the second telescopic spring 42 so that the nesting block 44 is embedded in the nesting groove 221, thereby fixing the fixing mechanism 4 on the fixing plate 2. Then, the through hole 482 on the surface of the fixing block 48 is aligned and inserted with the pin of the single-tube IGBT 3 so that the fixing block 48 is embedded in the fixing groove 47. The clamping block 481 is embedded in the clamping groove 471 so that the fixing block 48 is fixed inside the fixing groove 47, thereby further restricting and fixing the single-tube IGBT 3 to ensure the stability of the single-tube IGBT 3 on the fixing plate 2.

[0035] When disassembling a single IGBT3, it is only necessary to pull the fixing block 48 to move the fixing block 48 out of the fixing groove 47, and then pull the single IGBT3 upward to take the single IGBT3 out of the fixing member 21, so that the single IGBT3 can be disassembled and replaced easily.

[0036] If it is necessary to disassemble and replace all the single-tube IGBT3, it is only necessary to pull the slide bar 46 on the fixing mechanism 4 so that the slide bar 46 drives the moving block 43 and the nesting block 44 to move, so that the nesting block 44 moves out of the nesting groove 221. At this time, the fixing mechanism 4 can be taken out from the fixing plate 2, making it convenient for the staff to disassemble all the single-tube IGBT3.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A mounting and fixing structure for a single-tube IGBT, comprising a heat sink (1), a fixing plate (2) fixed to one side of the heat sink (1) by bolts, a single-tube IGBT (3) and a fixing mechanism (4) being arranged on the fixing plate (2), characterized in that: Also includes: A fixing member (21) fixed on the fixing plate (2), and the fixing plate (2) fixes the single-tube IGBT (3) via the fixing member (21), a first telescopic spring (211) being fixedly connected inside the fixing member (21), and a clamping block (212) being fixedly connected to the end of the first telescopic spring (211); A fixing seat (22) is symmetrically arranged on a fixing plate (2), and a fixing mechanism (4) is fixed to the fixing plate (2) via the fixing seat (22), the fixing mechanism (4) comprising a fixing groove (47) and a fixing block (48) for limiting and fixing a single-tube IGBT (3), and a through hole (482) is formed through the surface of the fixing block (48).

2. The single-tube IGBT installation and fixing structure according to claim 1 is characterized in that: A protrusion for limiting the single-tube IGBT (3) is provided at the end of the fixing member (21), and an anti-slip pad (213) is fixedly connected to the side of the clamping block (212).

3. The single-tube IGBT installation and fixing structure according to claim 1, characterized in that: A hemispherical clamping groove (471) is provided inside the fixing groove (47), and clamping blocks (481) that are engaged with the clamping groove (471) are fixedly connected to both sides of the fixing block (48).

4. The single-tube IGBT installation and fixing structure according to claim 1, characterized in that: A nesting groove (221) is provided through the interior of the fixing seat (22), and nesting blocks (44) cooperating with the nesting groove (221) are movably provided on both sides of the fixing mechanism (4).

5. The single-tube IGBT installation and fixing structure according to claim 4 is characterized in that: Grooves (41) are provided on both sides of the fixing mechanism (4), and a second telescopic spring (42) is fixedly connected inside the groove (41), a moving block (43) is fixedly connected to the end of the second telescopic spring (42), and the nesting block (44) is fixed to one side of the moving block (43).

6. The single-tube IGBT installation and fixing structure according to claim 5, characterized in that: The surface of the fixing mechanism (4) is provided with a sliding groove (45), and a sliding rod (46) is slidably arranged in the sliding groove (45), and the end of the sliding rod (46) is fixedly connected to the moving block (43).

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