Fixing structure for MOS (Metal Oxide Semiconductor) tube

Abstract

The utility model discloses a fixing structure for an MOS tube, and relates to the technical field of MOS tube fixing. Comprising an MOS transistor body provided with a positioning hole and a positioning table for positioning the MOS transistor body, a separation block is fixedly connected to the center of the positioning table, positioning columns are arranged on the portions, located on the two sides of the separation block, of the top of the positioning table, the MOS transistor body is arranged on the portion, located on one side of the separation block, of the top of the positioning table, the positioning columns are inserted into the positioning hole, and a blocking strip is fixedly connected to one side of the positioning table. Elastic limiting arms are arranged at two ends of one side, far away from the barrier strip, of the separation block; and the elastic limiting arms are matched with the barrier strip to limit the MOS tube body. According to the fixing structure for the MOS tubes, the use of fasteners is reduced while stable connection is ensured, the pressing mode and the mounting mode are optimized, the two MOS tubes can be fixed at the same time, mounting is simpler and more convenient, the mounting efficiency of the MOS tubes is improved, and mounting and dismounting of the MOS tubes are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to MOS tube fixing technical field, concretely is a MOS tube fixing structure. BACKGROUND

[0002] MOS tube is a kind of metal oxide semiconductor field effect transistor, in analog circuit electron, MOSFET can be used as amplifier, switch and other signal processing components, MOS tube is composed of 3 electrodes, respectively gate (G pole), source (S pole) and drain (D pole), MOS tube is applied as switch, D, S is the two ends of switch respectively, and G pole is the control end of switch, by controlling the voltage difference (Vgs) of gate and source, MOS tube switch can be realized.

[0003] With the high-speed development of industrialization, the application of MOS tube is more and more extensive, and the requirement of its fixing structure is higher and higher.The widely used fixing structure is fixed by screw fixing structure, but the assembly efficiency of screw fixing structure is low, and the MOS tube after fixing has rotating stress, and there is the risk of breakdown. UTILITY MODEL CONTENT

[0004] The utility model provides a MOS tube fixing structure to solve the problem in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a MOS tube fixing structure, including the MOS tube body that is equipped with positioning hole, the positioning table that positions MOS tube body, the center of positioning table is fixedly connected with the partition block, the top of positioning table is located at the both sides of partition block and is equipped with positioning column, the MOS tube body is located at the one side of partition block of positioning table top, positioning column inserts into positioning hole, one side of positioning table is fixedly connected with the baffle, the both ends of the one side of partition block away from baffle are equipped with elastic limiting arm, and MOS tube body is positioned by elastic limiting arm cooperation baffle.

[0006] Further, the bottom of the positioning table is provided with an elastic plate, and the bottom of the elastic plate is connected with a PCB plate.

[0007] Further, the material of the elastic plate is carbon steel.

[0008] Further, a through hole is formed in the elastic plate, a connecting hole corresponding to the through hole is formed in the PCB plate, a connecting barrel that can pass through the through hole and the connecting hole is fixedly connected to the bottom of the positioning table, a through hole corresponding to the connecting barrel is formed in the top of the partition block and the positioning table, a screw that passes through the connecting barrel and the through hole is assembled on the connecting barrel, and the screw is connected to a heat sink that is pressed on the MOS tube body.

[0009] Further, the two side inner walls of the perforation are provided with guide grooves, and the outer wall of the connecting cylinder is fixedly connected with guide blocks which can be inserted into the guide grooves.

[0010] Further, the partition block is hollow.

[0011] Compared with the prior art, the MOS tube fixing structure has the following beneficial effects: the MOS tube fixing structure ensures stable connection, reduces the use of fasteners, optimizes the pressing and mounting modes, can simultaneously fix two MOS tubes, makes the installation more convenient, improves the installation efficiency of the MOS tube, and facilitates the installation and disassembly of the MOS tube. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 is a structural schematic view of the utility model;

[0013] Fig. 2 is a split structural schematic view of the utility model;

[0014] Fig. 3 is a plane structural schematic view of the utility model.

[0015] In the figure: 1, MOS tube body; 2, positioning table; 3, partition block; 4, positioning hole; 5, positioning column; 6, elastic plate; 7, baffle; 8, elastic limiting arm; 9, perforation; 10, connecting cylinder; 11, through hole; 12, screw; 13, guide groove; 14, PCB; 15, radiator. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0017] Please refer to Figs. 1-3This utility model discloses a fixing structure for MOS transistors, including a MOS transistor body 1 with a positioning hole 4 and a positioning platform 2 for positioning the MOS transistor body 1. A partition block 3 is fixedly connected to the center of the positioning platform 2. Positioning posts 5 are provided on both sides of the top of the positioning platform 2 located on the partition block 3. The MOS transistor body 1 is placed on the top of the positioning platform 2 on one side of the partition block 3. The positioning posts 5 are inserted into the positioning hole 4. A stop bar 7 is fixedly connected to one side of the positioning platform 2. Elastic limiting arms 8 are provided at both ends of the side of the partition block 3 away from the stop bar 7. The elastic limiting arms 8 cooperate with the stop bar 7 to limit the MOS transistor body 1. This fixing structure for MOS transistors ensures a stable connection, reduces the use of fasteners, optimizes the clamping and installation methods, can fix two MOS transistors at the same time, making installation simpler, improving the installation efficiency of MOS transistors, and facilitating the installation and disassembly of MOS transistors.

[0018] Specifically, the bottom of the positioning platform 2 is provided with an elastic plate 6, and the bottom of the elastic plate 6 is connected to a PCB board 14.

[0019] The elastic plate 6 is made of carbon steel.

[0020] The elastic plate 6 has a through hole 9, and the PCB board 14 has a connection hole corresponding to the through hole 9. The bottom of the positioning platform 2 is fixedly connected to a connecting cylinder 10 that can pass through the through hole 9 and the connection hole. The top of the partition block 3 and the positioning platform 2 are both provided with through holes 11 corresponding to the connecting cylinder 10. The connecting cylinder 10 is equipped with a screw 12 that passes through the connecting cylinder 10 and the through hole 11. The screw 12 is connected to a heat sink 15 that is pressed on the MOS transistor body 1.

[0021] Guide grooves 13 are provided on both sides of the inner wall of the perforation 9, and a guide block that can be inserted into the guide groove 13 is fixedly connected to the outer wall of the connecting cylinder 10.

[0022] In this embodiment, when the positioning stage 2 is connected to the PCB board 14, an elastic plate 6 made of carbon steel is set between the positioning stage 2 and the PCB board 14.

[0023] The connecting cylinder 10 corresponds to the through hole 11 on the partition block 3 and the positioning stage 2, and the connecting cylinder 10 corresponds to the through hole 9 and the connecting hole on the PCB board 14.

[0024] The positioning platform 2 can hold two MOSFETs at a time. The positioning platform 2 is used to position the MOSFET body 1. The connecting cylinder 10 at the bottom of the MOSFET body 1 passes through the through hole 9 of the elastic plate 6 and the connecting hole opened on the PCB board 14. Then, a heat sink 15 is placed on the MOSFET body 1. The connecting cylinder 10 is connected by screws 12. Then, the screws 12 pass through the partition block 3 and the through hole 11 on the positioning platform and are connected to the heat sink 15 to complete the fixing of the MOSFET.

[0025] Specifically, the separator block 3 is hollow.

[0026] In this embodiment, elastic limiting arms 8 are set on both sides of the partition block 13 by bending. When the MOS transistor body 1 is placed on the positioning platform 2, the positioning hole 4 of the MOS transistor body 1 is aligned with the positioning post 5 on the positioning platform 2, and a certain force is applied to the elastic limiting arm 8 in the direction away from the stop bar 7. Then the positioning platform 2 is placed on the positioning platform 2. After the positioning platform 2 is placed, the elastic limiting arm 8 has a tendency to move towards the stop bar 7. The elastic limiting arm 8 can contact the MOS transistor body 1 and cooperate with the stop bar 7 to limit the MOS transistor body 1.

[0027] In summary, this MOSFET fixing structure ensures a stable connection while reducing the use of fasteners, optimizing the clamping and installation methods, and enabling the simultaneous fixing of two MOSFETs. This makes installation simpler, improves MOSFET installation efficiency, and facilitates MOSFET installation and removal.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixing structure for a MOS transistor, comprising a MOS transistor body (1) having a positioning hole (4) and a positioning platform (2) for positioning the MOS transistor body (1), characterized in that: The positioning platform (2) is fixedly connected to the center of the partition block (3). The top of the positioning platform (2) is provided with positioning posts (5) on both sides of the partition block (3). The MOS transistor body (1) is placed on the top of the positioning platform (2) on one side of the partition block (3). The positioning posts (5) are inserted into the positioning holes (4). A stop bar (7) is fixedly connected to one side of the positioning platform (2). The two ends of the partition block (3) away from the stop bar (7) are provided with elastic limiting arms (8). The elastic limiting arms (8) cooperate with the stop bar (7) to limit the MOS transistor body (1).

2. The fixing structure for a MOS transistor according to claim 1, characterized in that: The bottom of the positioning platform (2) is provided with an elastic plate (6), and the bottom of the elastic plate (6) is connected to a PCB board (14).

3. The fixing structure for a MOS transistor according to claim 2, characterized in that: The elastic plate (6) is made of carbon steel.

4. The fixing structure for a MOS transistor according to claim 2, characterized in that: The elastic plate (6) has a through hole (9), and the PCB board (14) has a connection hole corresponding to the through hole (9). The bottom of the positioning platform (2) is fixedly connected to a connecting cylinder (10) that can pass through the through hole (9) and the connection hole. The top of the partition block (3) and the positioning platform (2) are both provided with through holes (11) corresponding to the connecting cylinder (10). The connecting cylinder (10) is equipped with a screw (12) that passes through the connecting cylinder (10) and the through hole (11). The screw (12) is connected to a heat sink (15) pressed on the MOS tube body (1).

5. The fixing structure for a MOS transistor according to claim 4, characterized in that: The inner walls on both sides of the perforation (9) are provided with guide grooves (13), and the outer wall of the connecting cylinder (10) is fixedly connected with a guide block that can be inserted into the guide groove (13).

6. The fixing structure for a MOS transistor according to claim 1, characterized in that: The separator (3) is hollow.

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