MOS (Metal Oxide Semiconductor) tube pressing mechanism
By designing a MOS tube compression mechanism using elastic strips and blocks, the complex operation problems in the prior art are solved, and the automatic compression of heating devices such as MOS tubes and simplified assembly process is realized.
Patent Information
- Application Number
- CN202422353670.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-09-26
AI Technical Summary
The prior art uses a compression structure to dissipate heat to power pipes, and it is difficult to achieve automatic compression after the heating device is first welded to the PCB board.
A MOS tube compression mechanism is designed, adopting a structure that combines elastic strips and blocks. By setting elastic protrusions on the elastic strips, it will automatically tilt forward, which facilitates the inlet of heating devices such as MOS tubes and is fixed by fasteners, simplifying the assembly process.
Automatic compression of heating devices such as MOS tubes is realized, reducing the need for manual operation, simplifying the assembly process, making the compression operation more convenient, and suitable for the situation where the heating devices are first welded to the PCB board.
Smart Images
Figure CN222981759U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a MOS tube pressing mechanism. Background Art
[0002] In the design of power supply products, the heat dissipation problem of power tubes will inevitably be encountered. The heat dissipation of power tubes requires the use of a pressing structure to closely fit them with ceramic chips on the radiator, so as to quickly and effectively transfer heat to the radiator through the ceramic chips to reduce their own temperature. The existing pressing structure requires the pressing strip to be tilted forward manually when placing the heat generating device, locking the screw after placement, and the pressing strip returns to its original position to press the heat generating device. This method has complex operations and is not applicable to the situation where the heat generating device is first welded to the PCB board and then pressed by the pressing strip. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a MOS tube pressing mechanism that is applicable to the situation where heat generating devices such as MOS tubes are first welded to the PCB board and then pressed by a pressing strip, and is more convenient to operate.
[0004] To achieve the above purpose, the utility model adopts the following technical scheme: A MOS tube pressing mechanism includes an elastic pressing strip and also includes a pressing block. The pressing block is detachably fixed at a fixed position through a fastener. The elastic pressing strip includes a sheet-shaped fixing part and a plurality of pressing parts arranged on the side of the fixing part. An included angle is formed between the fixing part and the pressing parts. The fixing part is restricted between the fixed position and the pressing block. One end of the pressing part is connected to the edge of the fixing part, and the other end of the pressing part extends away from the pressing block. The fixing part has an elastic protrusion extending obliquely upward or downward. When the pressing block, the elastic pressing strip, and the fixed position are fixed, the elastic protrusion contacts the lower end surface of the pressing block or the upper end surface of the fixed position.
[0005] The solution of the utility model enables the elastic pressing strip to automatically tilt forward through the elastic protrusion provided on the elastic pressing strip, facilitating the placement of heat generating devices such as MOS tubes, reducing the need for manual operations, simplifying the assembly process, making the pressing operation of heat generating devices such as MOS tubes more convenient, and being applicable to the situation where heat generating devices such as MOS tubes are first welded to the PCB board and then pressed by a pressing strip. Among them, by arranging a plurality of pressing parts, one pressing part can cooperate with one MOS tube, making the pressing force more uniform.
[0006] Preferably, the elastic protrusion includes an upper elastic protrusion extending obliquely upward and a lower elastic protrusion extending downward. One of the upper elastic protrusion and the lower elastic protrusion extends toward the side close to the pressing part, and the other of the upper elastic protrusion and the lower elastic protrusion extends away from the pressing part.
[0007] Preferably, the pressing block comprises a pressing block body, and the pressing block body has a plurality of extensions extending downwards at locations corresponding to the elastic protrusions, which helps to improve the strength and stability of the pressing block and makes the entire pressing mechanism more solid.
[0008] Preferably, mutually matching positioning holes and positioning protrusions extending into the positioning holes are provided between the fixing part and the pressing block, and the fixing part of the elastic pressure strip has a clearance hole penetrating from top to bottom to make way for the positioning protrusion. This helps to accurately position, ensure the accurate installation and operation accuracy of the clamping mechanism, and at the same time reduce the setting of fasteners such as bolts, reduce the amount of bolts used, and further reduce the assembly operation steps.
[0009] Preferably, a matching hole is provided in the middle of the pressing block which passes through the upper and lower parts, the fastener is a bolt, and the fixing part has a threaded hole which corresponds to the matching hole and matches with the fastener.
[0010] Preferably, the upper end of the pressing part is bent toward the pressing block. The above arrangement facilitates the movement of heating components such as MOS tubes to the side of the pressing part when the PCB board is installed.
[0011] The utility model is suitable for the situation that a heating device such as a MOS tube is first welded to a PCB board and then pressed by a pressing strip, and has the advantage of being more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model.
[0013] Figure 2 The utility model is a structural schematic diagram of a pressing block. DETAILED DESCRIPTION
[0014] The utility model is further described below based on the accompanying drawings and specific embodiments.
[0015] Depend on Figure 1 and Figure 2 As shown, this embodiment discloses a MOS tube clamping mechanism, including an elastic pressure strip 1 and a pressure block 2, the pressure block 2 is detachably fixed at a fixed position by a fastener 3, the elastic pressure strip 1 includes a sheet-shaped fixing portion 11 and a plurality of clamping portions 12 arranged on the same side of the fixing portion 1, the fixing portion 11 and the clamping portion 12 form an angle, the fixing portion 11 is limited between the fixing portion and the pressure block 2, one end of the clamping portion 12 is connected to the edge of the fixing portion 11, the other end of the clamping portion 12 extends upward and away from the pressure block 2 and the fixing portion 11, and the upper end of the clamping portion 12 is bent toward the side of the pressure block. Among them, a matching hole 29 is provided in the middle of the pressure block 2, which runs through from top to bottom, the fastener is a bolt, the fixing portion has a threaded hole corresponding to the matching hole and matching with the fastener, and the fixing portion 11 of the elastic pressure strip 1 is provided with a clearance hole 10 corresponding to the threaded hole.
[0016] The fixing portion 11 has elastic protrusions extending obliquely upward and downward, and the elastic protrusions include an upper elastic protrusion 111 obliquely upward and a lower elastic protrusion 112 extending downward, one of the upper elastic protrusions 111 and the lower elastic protrusions 112 extends toward the side close to the clamping portion 12, and the other of the upper elastic protrusions 111 and the lower elastic protrusions 112 extends toward the side away from the clamping portion 12; when the pressing block 2, the elastic strip 1 and the fixing portion are fixed, the upper elastic protrusion 111 contacts the lower end surface of the pressing block 2, and the lower elastic protrusion 112 contacts the upper end surface of the fixing portion.
[0017] The pressing block 2 includes a pressing block body 21, and the pressing block body 21 has an extension portion 22 extending downward at a position corresponding to the elastic protrusion. A positioning hole that matches each other and a positioning protrusion 20 extending into the positioning hole are provided between the fixed portion and the pressing block 2. The positioning protrusion 20 is provided on the pressing block 2, and each positioning protrusion 20 is located between two adjacent extension portions 22. The fixing portion 11 of the elastic pressure strip 1 has a clearance hole that penetrates from top to bottom to make way for the positioning protrusion 20.
[0018] Among them, the lower ends of adjacent clamping parts 12 are connected by connecting parts 13, the connecting parts 13, the clamping parts 12 and the fixing parts 11 are integrally formed, the connecting parts 13 are connected to the edge of the fixing parts 11, and the connecting parts corresponding to the clearance holes 10 are provided with clearance openings 131, and the clamp body 20 of the clamp 2 has an extending protrusion 201 extending laterally.
Claims
1. A MOS tube pressing mechanism, comprising an elastic pressing strip, characterized in that: It also includes a pressing block, which is detachably fixed at a fixed position by a fastener, and the elastic pressure strip includes a sheet-shaped fixing portion and a plurality of clamping portions arranged on the side of the fixing portion, and an angle is formed between the fixing portion and the clamping portion, and the fixing portion is restricted between the fixing position and the pressing block, one end of the clamping portion is connected to the edge of the fixing portion, and the other end of the clamping portion extends away from the pressing block, and the fixing portion has an elastic protrusion extending obliquely upward or downward, and when the pressing block, the elastic pressure strip and the fixed position are fixed, the elastic protrusion contacts the lower end surface of the pressing block or the upper end surface of the fixed position.
2. The MOS tube pressing mechanism according to claim 1, characterized in that: The elastic protrusion includes an upper elastic protrusion inclined upward and a lower elastic protrusion extending downward, one of the upper elastic protrusion and the lower elastic protrusion extends toward the clamping portion, and the other of the upper elastic protrusion and the lower elastic protrusion extends away from the clamping portion.
3. The MOS tube pressing mechanism according to claim 1, characterized in that: The pressing block comprises a pressing block body, and the pressing block body has a plurality of extending parts extending downwards at locations corresponding to the elastic protrusions.
4. The MOS tube pressing mechanism according to claim 1, characterized in that: A positioning hole that matches each other and a positioning protrusion that extends into the positioning hole are provided between the fixing part and the pressing block, and the fixing part of the elastic pressure strip has a making way hole that passes through from top to bottom to make way for the positioning protrusion.
5. The MOS tube pressing mechanism according to claim 1, characterized in that: The middle of the pressing block is provided with a matching hole which passes through from top to bottom, the fastener is a bolt, and the fixing portion has a threaded hole which corresponds to the matching hole and matches with the fastener.
6. The MOS tube pressing mechanism according to claim 1, characterized in that: The upper end of the pressing portion is bent toward the pressing block side.