MOS tube fixing tool

Abstract

The invention discloses an MOS tube fixing tool which comprises a base, a limiting plate, a right side plate, a left side plate and a guide rail. The left side and the right side of the base are each provided with a first baffle, a rectangular groove is formed in each first baffle, and a neodymium-iron-boron magnet is installed in each groove. A mounting plate is arranged on the rear side of the base, a supporting plate is arranged behind the mounting plate, two positioning pins are arranged on the mounting plate, and one end of a limiting plate is arranged on the positioning pins; the right side plate and the left side plate are mounted on the mounting plate, and the mounting plate is used for limiting the module radiator at the same time; the baffle I and the neodymium-iron-boron magnet are used for limiting the right side plate and the left side plate at the same time; the guide rail is longitudinally arranged in the middle of the upper surface of the base; four foot pads are installed on the lower portion of the base. The power tube fixing device is simple in structure, reasonable in design, simple in structure, convenient to assemble and capable of effectively improving the assembling efficiency and consistency of power tubes on the basis of effectively retaining functions.

Description

Technical Field

[0001] This invention relates to a fixture for a DC electronic load of a power supply testing device, and more particularly to a fixture for fixing a MOSFET. Background Technology

[0002] Currently, DC electronic loads are instruments with excellent load accuracy, load stability, and regulation control. Their outstanding characteristics make them widely used in the experimentation, testing, verification, and aging of power supply products and power electronic components.

[0003] The load employs a modular design, containing three modules. Each module houses two power boards, and each power board has 24 MOSFETs soldered onto it. The power boards are assembled onto a heatsink, which then dissipates heat from the MOSFETs. Conventional assembly processes suffer from low MOSFET assembly efficiency and poor consistency.

[0004] In view of this, the present invention is hereby proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a MOS transistor fixing fixture to solve the above-mentioned technical problems existing in the prior art.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] The present invention provides a MOS transistor fixing fixture, comprising a base 15, a limiting plate 16, a right side plate 17, a left side plate 18, and a guide rail 23;

[0008] The base 15 has a baffle 19 on each of its left and right sides. The baffle 19 has a rectangular groove in which neodymium iron boron magnets 28 are installed.

[0009] A mounting plate 20 is provided on the rear side of the base 15, and a support plate 21 is provided behind the mounting plate 20. Two positioning pins 24 are provided on the mounting plate 20, and one end of the limiting plate 16 is mounted on the positioning pins 24.

[0010] The right side plate 17 and the left side plate 18 are mounted on the mounting plate 20, which also serves as a limit for the module heat sink 31; the baffle 19 and the neodymium iron boron magnet 28 also serve as limits for the right side plate 17 and the left side plate 18.

[0011] The guide rail 23 is longitudinally disposed in the middle of the upper surface of the base 15;

[0012] Four foot pads 22 are installed on the lower part of the base 15.

[0013] Compared with the prior art, the MOS transistor fixing fixture provided by the present invention is reasonably designed, has a simple structure, is easy to assemble, and can effectively improve the assembly efficiency and consistency of power transistors while effectively preserving the function. Attached Figure Description

[0014] Figure 1 This is an illustration of the assembly effect of the MOS transistor fixing fixture and the workpiece provided in an embodiment of the present invention;

[0015] Figures 2-1, 2-2, and 2-3 are schematic diagrams of the assembly components and connections of the base structure according to an embodiment of the present invention.

[0016] Figures 3-1, 3-2, 3-3, and 3-4 are schematic diagrams of the assembly components and connections of the side plate structure according to an embodiment of the present invention.

[0017] Figures 4-1, 4-2, and 4-3 are schematic diagrams of the assembly components and connections of the limiting plate structure according to an embodiment of the present invention.

[0018] Figure 5 This is a schematic diagram of the tooling operation in an embodiment of the present invention.

[0019] Parts details in the diagram:

[0020] 1. Stepped hole, 2. Stepped hole, 3. Stepped hole, 4. M4 threaded hole, 5. φ3.5 stepped hole, 6. M4 threaded hole, 7. M6 threaded hole, 8. φ4.2 stepped hole, 9. M3 threaded hole, 10. φ3.2 stepped hole, 11. M6 threaded hole, 12. Rectangular hole, 13. M3 threaded hole, 14. φ6 through hole;

[0021] 15. Base, 16. Limiting plate, 17. Right side plate, 18. Left side plate, 19. Baffle 1, 20. Mounting plate, 21. Support plate, 22. Foot pad, 23. Guide rail, 24. Positioning pin, 25. Hinge, 26. Baffle 3, 27. Baffle 4, 28. Neodymium iron boron magnet, 29. Baffle 2, 30. Unremovable screw, 31. Module heat sink, 32. MOSFET;

[0022] 33. GB / T 9074.4 M4x10 screws; 34. GB / T 9074.4 M4x16 screws; 35. GB / T 9074.4 M3x10 screws; 36. GB / T 9074.4 M6x16 screws; 37. GB / T 9074.4 M3x6 screws. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them, and do not constitute a limitation on the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the protection scope of the present invention.

[0024] First, the following explanations are provided for the terms that may be used in this article:

[0025] The terms “including,” “contains,” “comprising,” “having,” or other similar semantic descriptions shall be interpreted as non-exclusive inclusion.

[0026] The term "composed of" excludes any technical feature elements not explicitly listed.

[0027] Unless otherwise explicitly specified or limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this document according to the specific circumstances.

[0028] The terms “center,” “longitudinal,” “lateral,” “length,” “width,” “thickness,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” “outer,” “clockwise,” and “counterclockwise” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience and simplification of description and do not imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this document.

[0029] The contents not described in detail in the embodiments of this invention are prior art known to those skilled in the art. Where specific conditions are not specified in the embodiments of this invention, they shall be performed according to conventional conditions in the art or conditions recommended by the manufacturer. Where the manufacturers of the reagents or instruments used in the embodiments of this invention are not specified, they are all conventional products that can be purchased commercially.

[0030] The present invention provides a MOS transistor fixing fixture, comprising a base 15, a limiting plate 16, a right side plate 17, a left side plate 18, and a guide rail 23;

[0031] The base 15 has a baffle 19 on each of its left and right sides. The baffle 19 has a rectangular groove in which neodymium iron boron magnets 28 are installed.

[0032] A mounting plate 20 is provided on the rear side of the base 15, and a support plate 21 is provided behind the mounting plate 20. Two positioning pins 24 are provided on the mounting plate 20, and one end of the limiting plate 16 is mounted on the positioning pins 24.

[0033] The right side plate 17 and the left side plate 18 are mounted on the mounting plate 20, which also serves as a limit for the module heat sink 31; the baffle 19 and the neodymium iron boron magnet 28 also serve as limits for the right side plate 17 and the left side plate 18.

[0034] The guide rail 23 is longitudinally disposed in the middle of the upper surface of the base 15;

[0035] Four foot pads 22 are installed on the lower part of the base 15.

[0036] A baffle 29 is installed on each of the left and right sides of the limiting plate 16;

[0037] A self-locking screw 30 is installed in the middle of the limiting plate 16. The self-locking screw 30 fixes the limiting plate 16 to the module heat sink 31, which is mounted on the guide rail 23.

[0038] A baffle 3 26 and a baffle 4 27 are installed on the right side plate 17 and the left side plate 18, respectively.

[0039] The right side plate 17 and the left side plate 18 are connected to the mounting plate 20 by hinges.

[0040] The second baffle 29 and the third baffle 26 both serve as limits for the MOS transistor 32, and the fourth baffle 27 also serves as a limit for the module heat sink 31.

[0041] In summary, the MOS transistor fixing fixture of this invention is reasonably designed, has a simple structure, is easy to assemble, and can effectively improve the assembly efficiency and consistency of power transistors while effectively preserving functionality.

[0042] To more clearly demonstrate the technical solution and its effects provided by the present invention, the embodiments of the present invention will be described in detail below with reference to specific examples.

[0043] Example 1

[0044] like Figures 1 to 5 As shown:

[0045] The tooling is mainly divided into four parts: base 15 (1 piece), limit plate 16 (1 piece), right side plate 17 (1 piece), left side plate 18 (1 piece), and guide rail (2 pieces).

[0046] 1. Base 15:

[0047] The base 15 is made of 6063 aluminum alloy. Each of the left and right sides of the base 15 has a baffle 19, also made of 6063 aluminum alloy; each baffle 19 has a rectangular groove for mounting neodymium iron boron magnets 28; the rear of the base 15 has a mounting plate 20 and a support plate 21, both made of 6063 aluminum alloy; the mounting plate 20 has two positioning pins 24, made of 304 stainless steel; and the lower part of the base 15 has four feet 22, made of ABS.

[0048] The 6063 aluminum alloy has good structural strength and is lightweight.

[0049] The baffle 19 and neodymium iron boron magnet 28 are used to limit the right side plate 17 and the left side plate 18;

[0050] The mounting plate 20 is used for mounting the right side plate 17 and the left side plate 18 and for limiting the module heat sink 31.

[0051] The support plate 21 is used to support the mounting plate 20, making it less prone to deformation;

[0052] The positioning pin 24 is used for positioning the limiting plate 16;

[0053] The foot pad 22 is used to support the base 15.

[0054] 2. Limiting plate 16:

[0055] The limiting plate 16 is made of 6063 aluminum alloy; a baffle 29 is installed on each of the left and right sides of the limiting plate 16; a non-detachable screw 30 with a specification of M4X25 is installed in the middle of the limiting plate 16.

[0056] The 6063 aluminum alloy has good structural strength and is lightweight.

[0057] The second baffle 29 is made of aluminum alloy 6063 and is used to limit the power tube;

[0058] The non-detachable screw 30 is used to fix the limiting plate 16 to the module heat sink 31.

[0059] 3. Left side panel 18, right side panel 17

[0060] The right side plate 17 and the left side plate 18 are made of aluminum alloy 6063; a baffle 3 26 and a baffle 4 27 are installed on the right side plate 17 and the left side plate 18; the right side plate 17 and the left side plate 18 are connected to the mounting plate 20 by hinges, which can realize the free rotation of the right side plate 17 and the left side plate 18.

[0061] The 6063 aluminum alloy has good structural strength and is lightweight.

[0062] The baffle plate 326 is made of FR4 board and is used to limit the MOSFET.

[0063] The baffle 427 is made of aluminum alloy 6063 and is used for limiting the module heat sink.

[0064] The hinge model is CL127, and the brand is Shengjiu.

[0065] Guide rail 23

[0066] The guide rail 23 is made of ABS+PC and is used for guiding and limiting the module heat sink 31.

[0067] This fixture combines different functional parts through assembly, allowing for convenient and efficient assembly of power transistors onto heat sinks with good consistency. It features a simple structure, easy assembly, and strong practicality.

[0068] The specific structure and assembly are described below:

[0069] like Figure 1 As shown, the fixture consists of three parts: base 15 (1 piece), limit plate 16 (1 piece), right side plate 17 (1 piece), and left side plate 18 (1 piece), which are used as a set.

[0070] As shown in Figures 2-1, 2-2, and 2-3:

[0071] The base 15 has multiple φ4.2 stepped holes. Step hole 1 is used to fix the baffle 19, which can be fixed with GB / T9074.4 M4x10 screws 33. Step hole 2 is used to fix the mounting plate 20, which can be fixed with GB / T 9074.4 M4x10 screws 33. Step hole 3 is used to fix the support plate 21, which can be fixed with GB / T 9074.4 M4x10 screws 33. The base 15 also has four M4 threaded holes 4, which can be used to fix the foot pads 22 with GB / T 9074.4 M4x16 screws 34. The base 15 also has four φ3.5 stepped holes 5, which are used to fix the guide rail 23, which can be fixed with GB / T 9074.4 M3x10 screws 35. As shown in Figure 2-2, the mounting plate 20 has two M4 threaded holes 6, which are used to fix the locating pins 24.

[0072] As shown in Figures 3-1, 3-2, 3-3, and 3-4:

[0073] The mounting plate 20 has four M6 threaded holes 7 for mounting hinges 25, which can be fixed with GB / T 9074.4 M6x16 screws 36; the mounting plate 20 has two φ4.2 stepped holes 8 for connecting with the support plate 21, which can be connected with GB / T9074.4 M4x10 screws 33.

[0074] The right side plate 17 and the left side plate 18 have three M3 threaded holes 9 for fixing the baffle 3 26, which can be fixed with GB / T9074.4 M3x10 screws 35; the right side plate 17 and the left side plate 18 have two φ3.2 stepped holes 10 for fixing the baffle 4 27, which can be fixed with GB / T 9074.4 M3x10 screws 35; the right side plate 17 and the left side plate 18 have two M6 threaded holes 11 for fixing the other end of the hinge 25, which can be fixed with GB / T 9074.4 M6x16 screws 36; the right side plate 17 and the left side plate 18 have rectangular holes 12 for mounting neodymium iron boron magnets 28.

[0075] As shown in Figures 4-1, 4-2, and 4-3:

[0076] The limiting plate 16 has 12 M3 threaded holes 13 for installing the baffle 29, which can be fixed with GB / T 9074.4 M3x6 screws 37; the limiting plate 16 has one φ6 through hole 14 for installing a captive screw 30, as shown in Figure 4-3.

[0077] In use, remove the limiting plate 16, open the right side plate 17 and left side plate 18 to both sides, push the module heat sink 31 into the base 15 along the guide rail 23, close the right side plate 17 and left side plate 18, and the magnets will attract them together. Then place the limiting plate on the module heat sink 31, limit it with the positioning pin 24, and screw in the lock-lock screw 30. Place the MOSFET 32 into the slot and fix it with the GB / T 9074.4M3x12 screw 38. After the MOSFET 32 is fixed, loosen the lock-lock screw 30, remove the limiting plate 16, open the right side plate 17 and left side plate 18, and take out the module heat sink 31. The MOSFET 32 is now fixed. This fixture has a simple structure and is easy to assemble and disassemble, which greatly improves the consistency of MOSFET assembly and can quickly and efficiently complete the assembly of power transistors.

[0078] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims. The information disclosed in the background section is intended only to enhance the understanding of the overall background technology of the present invention and should not be construed as an admission or implication in any way that such information constitutes prior art known to those skilled in the art.

Claims

1. A MOSFET fixing fixture, characterized in that, Includes base (15), limiting plate (16), right side plate (17), left side plate (18), and guide rail (23); The base (15) has a baffle (19) on each of its left and right sides. The baffle (19) has a rectangular groove, and a neodymium iron boron magnet (28) is installed in the groove. A mounting plate (20) is provided on the rear side of the base (15), and a support plate (21) is provided behind the mounting plate (20). Two positioning pins (24) are provided on the mounting plate (20), and one end of the limiting plate (16) is mounted on the positioning pins (24). The right side plate (17) and the left side plate (18) are mounted on the mounting plate (20), which also serves as a limit for the module heat sink (31); the baffle (19) and the neodymium iron boron magnet (28) also serve as limits for the right side plate (17) and the left side plate (18). The guide rail (23) is longitudinally located in the middle of the upper surface of the base (15); Four foot pads (22) are installed on the lower part of the base (15).

2. The MOS transistor fixing fixture according to claim 1, characterized in that, A baffle plate (29) is installed on each of the left and right sides of the limiting plate (16); A self-locking screw (30) is installed in the middle of the limiting plate (16). The self-locking screw (30) fixes the limiting plate (16) to the module heat sink (31), which is mounted on the guide rail (23).

3. The MOS transistor fixing fixture according to claim 2, characterized in that, A baffle three (26) and a baffle four (27) are installed on the right side plate (17) and the left side plate (18); The right side panel (17) and the left side panel (18) are connected to the mounting plate (20) by hinges.

4. The MOS transistor fixing fixture according to claim 3, characterized in that, The second baffle (29) and the third baffle (26) serve as limits for the MOS transistor (32), and the fourth baffle (27) serves as limits for the module heat sink (31).

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