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 aluminum substrate, one side of the aluminum substrate is provided with a threaded hole and is in threaded connection with a screw through the threaded hole, the head end of the screw is connected with a wedge block, the bottom of the wedge block is provided with a clamping block, the aluminum substrate is provided with a sliding groove, the wedge block slides on the aluminum substrate through the clamping block and the sliding groove, and the other side of the aluminum substrate is connected with a pin in an inserted mode. The aluminum substrate is pre-installed at the placing position of the radiator, the pressing plate is pressed on the MOS tube, the screw rod is rotated, under the screw-thread fit with the threaded hole, rotary motion is converted into linear motion, the wedge-shaped block is driven to move transversely, and therefore the pulley at the tail of the pressing plate is slowly lifted, the acting force applied to the head end of the pressing plate along with the lifted pulley is gradually increased, and the heat dissipation effect is achieved. Therefore, the pressing plate is reliably and tightly pressed on the MOS tube, the MOS tube is tightly attached to the radiator, and the installation reliability of the MOS tube is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of MOS tube fixing, in particular to a fixing structure for a MOS tube. Background Art

[0002] During the use of electronic components with high heat generation, if the heat cannot be effectively transferred to the corresponding cooling object, the electronic components will overheat and be damaged. For example, the MOS tube used in power supply design or driving circuits will easily burn out if the heat generated by the MOS tube is not removed in time during operation. Therefore, it is necessary to install a radiator to effectively discharge the heat generated.

[0003] In the prior art, a pressing plate is generally used to fix and press the MOS tube onto the heat sink. The deformation of the pressing plate compacts the MOS tube. The pressing plate is formed by bending a sheet metal part. One end of the pressing plate is fixed with screws, and the other end presses the MOS tube. Processing errors in the sheet metal part and installation errors of the pressing plate can result in inconsistent deformation of the end of the pressing plate pressing the MOS tube, resulting in different pressing forces. When the pressing force is low, the MOS tube is not pressed sufficiently, and the MOS tube cannot be reliably and tightly attached to the heat sink. As a result, the heat of the MOS tube cannot be effectively conducted away, causing damage. Utility Model Content

[0004] The utility model provides a fixing structure for a MOS tube to solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a fixing structure for a MOS tube, comprising an aluminum base plate, a threaded hole being provided on one side of the aluminum base plate, and a screw being threadedly connected through the threaded hole, a wedge block being connected to the head end of the screw, a clamping block being provided at the bottom of the wedge block, a slide groove being provided on the aluminum base plate, the wedge block sliding on the aluminum base plate through the clamping block and the slide groove, a pin being inserted into the other side of the aluminum base plate, and a pressure plate being hingedly connected through the pin, a rotating shaft being inserted into the tail of the pressure plate, and a pulley being movably mounted on the rotating shaft, and the bottom of the pulley being in contact with the inclined surface of the wedge block.

[0006] Furthermore, the aluminum substrate is U-shaped and is provided with fixing holes.

[0007] Furthermore, the wedge block is provided with a stepped hole, and the head end of the screw rod is movably inserted into the stepped hole.

[0008] Furthermore, a retaining ring is clamped at the head end of the screw, and the retaining ring is close to the stepped hole.

[0009] Furthermore, the aluminum base plate and the pressure plate are both provided with pin holes, and the pins are inserted into the pin holes.

[0010] Furthermore, the tail of the pressing plate is provided with an axis hole, and the rotating shaft is inserted into the axis hole.

[0011] Compared with the prior art, the present invention provides a MOS tube fixing structure with the following features:

[0012] Beneficial effects:

[0013] The MOS tube uses a fixed structure, pre-installs the aluminum substrate to the placement position of the radiator, and is held on the MOS tube by a pressing plate. The screw is rotated, and the screw, in cooperation with the thread of the threaded hole, converts the rotational motion into linear motion, driving the wedge block to move laterally, thereby slowly lifting the pulley at the tail of the pressing plate. As the lifting pulley exerts a gradually increasing force on the head end of the pressing plate, the pressing plate is reliably and tightly pressed on the MOS tube, making the MOS tube and the radiator fit tightly, thereby improving the installation reliability of the MOS tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of the utility model;

[0015] Figure 2 It is a cross-sectional view of the utility model;

[0016] Figure 3 It is a top view of the utility model.

[0017] In the figure: 1. Aluminum base plate; 2. Threaded hole; 3. Screw; 4. Wedge block; 5. Clamping block; 6. Slide groove; 7. Pin; 8. Pressure plate; 9. Rotating shaft; 10. Pulley; 11. Fixing hole; 12. Stepped hole; 13. Retaining ring; 14. Pin hole; 15. Shaft hole. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 3The utility model discloses a fixing structure for a MOS tube, including an aluminum base plate 1, a threaded hole 2 is provided on one side of the aluminum base plate 1, and a screw 3 is threadedly connected through the threaded hole 2, the head end of the screw 3 is connected to a wedge block 4, the bottom of the wedge block 4 is provided with a clamping block 5, a slide groove 6 is provided on the aluminum base plate 1, the wedge block 4 slides on the aluminum base plate 1 through the clamping block 5 and the slide groove 6, a pin 7 is inserted on the other side of the aluminum base plate 1, and a pressure plate 8 is hingedly connected to the pin 7, the tail of the pressure plate 8 is inserted with a rotating shaft 9, and a pulley 10 is movably sleeved on the rotating shaft 9. The bottom of the pulley 10 is abutted against the inclined surface of the wedge block 4. The aluminum substrate 1 is pre-installed on the placement position of the radiator and is pressed on the MOS tube by the pressing plate 8. The screw 3 is rotated, and the rotational motion is converted into linear motion under the cooperation with the thread of the threaded hole 2, driving the wedge block 4 to move laterally, thereby slowly lifting the pulley 10 at the tail of the pressing plate 8. As the pulley 10 is lifted, the force applied to the head end of the pressing plate 8 gradually increases, so that the pressing plate 8 is reliably and tightly pressed on the MOS tube, so that the MOS tube and the radiator are closely fitted, thereby improving the installation reliability of the MOS tube.

[0020] Specifically, the aluminum substrate 1 is U-shaped and is provided with a fixing hole 11 .

[0021] In this embodiment, the aluminum substrate 1 is pre-installed on the placement position of the heat sink by fitting screws through the fixing holes 11 .

[0022] Specifically, a stepped hole 12 is provided on the wedge block 4 , and the head end of the screw rod 3 is movably inserted into the stepped hole 12 .

[0023] In this embodiment, the stepped hole 12 is an assembly structure for connecting the screw 3 and the wedge block 4 .

[0024] Specifically, a retaining ring 13 is clamped at the head end of the screw 3 , and the retaining ring 13 is close to the stepped hole 12 .

[0025] In this embodiment, the main function of the retaining ring 13 is to prevent the parts on the shaft or the hole from moving left and right. Since the screw 3 and the wedge block 4 are clearance-fitted (i.e., movablely connected), the retaining ring 13 serves to limit the screw 3 without affecting the relative rotation of the screw 3.

[0026] Specifically, the aluminum substrate 1 and the pressing plate 8 are both provided with pin holes 14 , and the pins 7 are inserted into the pin holes 14 .

[0027] In this embodiment, the pin hole 14 is an assembly structure, and the aluminum substrate 1 and the pressure plate 8 are hinged by the cooperation between the pin hole 14 and the pin 7.

[0028] Specifically, a shaft hole 15 is provided at the tail of the pressing plate 8 , and the rotating shaft 9 is inserted into the shaft hole 15 .

[0029] In this embodiment, the shaft hole 15 is an assembly structure, and the pulley 10 is movably mounted on the tail of the pressure plate 8 through the cooperation between the shaft hole 15 and the rotating shaft 9 .

[0030] During use, the aluminum substrate 1 is pre-installed on the placement position of the radiator, and is pressed on the MOS tube by the pressing plate 8. The screw 3 is rotated, and the rotational motion is converted into linear motion under the cooperation with the thread of the threaded hole 2, driving the wedge block 4 to move laterally, thereby slowly lifting the pulley 10 at the tail of the pressing plate 8. As the pulley 10 is lifted, the force applied to the head end of the pressing plate 8 gradually increases, so that the pressing plate 8 is reliably and tightly pressed on the MOS tube, so that the MOS tube and the radiator are tightly fitted, thereby improving the installation reliability of the MOS tube.

[0031] In summary, the MOS tube uses a fixed structure, and the aluminum substrate 1 is pre-installed on the placement position of the radiator. The pressing plate 8 is pressed on the MOS tube, and the screw 3 is rotated. Under the cooperation with the thread of the threaded hole 2, the rotational motion is converted into linear motion, driving the wedge block 4 to move laterally, thereby slowly lifting the pulley 10 at the tail of the pressing plate 8. As the pulley 10 is lifted, the force applied to the head end of the pressing plate 8 gradually increases, so that the pressing plate 8 is reliably and tightly pressed on the MOS tube, so that the MOS tube and the radiator are closely fitted, thereby improving the installation reliability of the MOS tube.

[0032] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fixing structure for a MOS tube, comprising an aluminum substrate (1), characterized in that: A threaded hole (2) is provided on one side of the aluminum substrate (1), and a screw rod (3) is threadedly connected through the threaded hole (2); the head end of the screw rod (3) is connected to a wedge block (4); a clamping block (5) is provided at the bottom of the wedge block (4); a slide groove (6) is provided on the aluminum substrate (1); the wedge block (4) slides on the aluminum substrate (1) through the clamping block (5) and the slide groove (6); a pin (7) is inserted on the other side of the aluminum substrate (1), and a pressure plate (8) is hinged through the pin (7); a rotating shaft (9) is inserted at the tail of the pressure plate (8), and a pulley (10) is movably mounted on the rotating shaft (9); the bottom of the pulley (10) is abutted against the inclined surface of the wedge block (4).

2. The fixing structure for a MOS tube according to claim 1, characterized in that: The aluminum substrate (1) is U-shaped and is provided with a fixing hole (11).

3. The fixing structure for a MOS tube according to claim 1, characterized in that: The wedge block (4) is provided with a stepped hole (12), and the head end of the screw rod (3) is movably inserted into the stepped hole (12).

4. The fixing structure for a MOS tube according to claim 3, characterized in that: A retaining ring (13) is clamped at the head end of the screw rod (3), and the retaining ring (13) is close to the stepped hole (12).

5. The fixing structure for a MOS tube according to claim 1, characterized in that: The aluminum base plate (1) and the pressing plate (8) are both provided with pin holes (14), and the pins (7) are inserted into the pin holes (14).

6. The fixing structure for a MOS tube according to claim 1, characterized in that: The tail of the pressing plate (8) is provided with an axial hole (15), and the rotating shaft (9) is inserted into the axial hole (15).

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