Heat-conducting silicone grease blade coating jig
By designing a thermal grease application fixture and utilizing the combination of a base, perforated plate, and scraper, the problem of uneven application of liquid metal composite thermal grease was solved, achieving uniform application of thermal grease and optimal heat dissipation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YUNNAN ZHONGXUAN LIQUID METAL TECH CO LTD
- Filing Date
- 2025-04-25
- Publication Date
- 2026-05-19
AI Technical Summary
Liquid metal composite thermal grease is unevenly applied and the amount applied is difficult to control. Furthermore, its heat dissipation performance is inconsistent due to the chip structure and the influence of bolts.
A thermal grease application fixture is designed, comprising a base, a perforated plate, and a grease scraper. The uniform application of thermal grease is achieved through the combination of positioning through holes, dense small holes, and the grease scraper.
It achieves uniform application of thermal grease, reduces inconsistencies in heat dissipation caused by operator differences, and improves the standardization of the application process and the heat dissipation effect.
Smart Images
Figure CN224253304U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of auxiliary processing technology for electronic components, and in particular relates to a thermal grease scraping fixture. Background Technology
[0002] Thermal grease is a highly thermally conductive material used for heat dissipation in electronic devices. It is typically filled into the tiny gaps between heat-generating components (such as CPUs and GPUs) and heat sinks to improve heat transfer efficiency. In recent years, liquid metal composite thermal grease has become increasingly widely used in the field of thermal interface materials for thermal greases due to its excellent thermal conductivity. Liquid metal composite thermal grease possesses the good thermal conductivity of ordinary liquid metals, and unlike ordinary liquid metals, it does not require sealing during use when formulated as a paste, eliminating leakage issues.
[0003] However, liquid metal composite thermal grease is made of a combination of various metals and non-metals. Compared to traditional thermal grease, composite thermal grease has a higher density, higher viscosity, and a rougher texture. Manually applying liquid metal composite thermal grease directly to the chip's end face (the base surface) or other component surfaces is difficult to achieve even distribution. After the liquid metal composite thermal grease is applied to the chip, multiple sets of heatsink bolts are needed to tighten it together to ensure the composite grease is evenly spread between the heatsink and the chip, thus achieving optimal performance. The application of liquid metal composite thermal grease is significantly affected by pressure (chip structure and number of bolts).
[0004] To simplify and standardize the application of liquid metal composite thermal grease without being affected by chip structure and bolts, there is an urgent need for a liquid metal composite thermal grease application fixture to solve problems such as uneven thickness of the application surface, difficulty in controlling the amount applied, the thermal interface being easily affected by the number and distribution of clamping bolts, and the inability of different operators to achieve a uniform and optimal heat dissipation effect when applying thermal grease.
[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content
[0006] This utility model, through structural integration and optimization of existing technologies, provides a thermal grease application fixture. It not only solves the problems encountered in applying liquid metal composite thermal grease, but also achieves the same technical effect when applied to other paste-like thermal greases. Furthermore, it features a simple structure, convenient operation, and ease of use. Details are as follows:
[0007] A thermal grease application fixture, comprising:
[0008] The base has a positioning through hole; the positioning through hole mates with the base surface to be coated;
[0009] A perforated plate, placed on the upper surface of the base, has a number of densely packed small holes;
[0010] A scraper plate is placed on the upper end face of the perforated plate;
[0011] The squeegee is configured to apply the thermally conductive silicone grease through a plurality of densely packed small holes onto the squeegee base surface using pressure.
[0012] Furthermore, the base is a U-shaped structure consisting of a base plate and side walls, with elongated perforated slides on both side walls; the positioning through holes are provided on the base plate.
[0013] Furthermore, one end of the slide is provided with a disassembly hole; the disassembly hole communicates with the slide, and the diameter of the hole is greater than the width of the slide.
[0014] Furthermore, the shape of the positioning through hole is the same as the shape of the coating base surface.
[0015] Furthermore, the perforated plate is a flat plate structure with a width ≤ the width of the base plate and a thickness of 0.05mm to 1.5mm.
[0016] Furthermore, a plurality of the densely packed small holes form a penetration area of the thermally conductive silicone grease on the perforated plate; the penetration area has the same shape as the positioning through hole.
[0017] Furthermore, the densely packed micropores have a horizontal cross-sectional shape of a circle, square, or polygon, and a diameter of 0.1 mm to 2 mm; the spacing between the micropores is 0.2 mm to 2.5 mm.
[0018] Furthermore, positioning pins are provided on both sides of the coating blade; the positioning pins have the same diameter as the width of the slide rail, are connected to the base through the slide rail, and can move along the slide rail; the positioning pins can be disconnected from the base from the disassembly hole position.
[0019] Furthermore, a handle is provided at the rear end of the scraper; the handle and the scraper form an angle, the angle being less than 180° and greater than 90°.
[0020] Furthermore, the base, perforated plate, and scraper handle are all made of stainless steel; and / or, the scraper base surface is the heat dissipation end face of the electronic component.
[0021] Compared with the prior art, the technical effects achieved by this utility model are as follows:
[0022] 1. The base is provided with positioning through holes that match the base surface to be coated, so that the coating jig can be positioned on the base surface to prevent the jig from moving during construction and affecting the neatness of the coated surface;
[0023] 2. The perforated plate with several densely packed small holes allows the thermal grease to be evenly applied to the base surface through the holes, solving the problem of different heat dissipation effects caused by different construction standards of different personnel;
[0024] 3. Using a scraper allows you to press the thermal grease into the densely packed small holes, making the application process simpler and more standardized, and achieving the best heat dissipation effect. Attached Figure Description
[0025] Figure 1 A schematic diagram of the overall structure after the thermal grease scraping fixture is assembled.
[0026] Figure 2 A schematic diagram of the overall structure of the thermal grease scraping fixture after disassembly.
[0027] Figure 3 A schematic diagram of a fixture with densely packed small holes for applying thermal grease.
[0028] Figure 4 A schematic diagram of the construction process after the thermal grease is applied using a jig and assembled.
[0029] Explanation of key figure labels:
[0030] 1-Base, 101-Positioning through hole, 102-Base plate, 103-Side wall, 104-Slide rail, 105-Disassembly / removal hole, 106-Slide groove, 107-Limiting block, 2-Perforated plate, 201-Dense small holes, 202-Penetration area, 3-Scraper plate, 301-Positioning pin, 302-Handle, 4-Scraper base surface, 5-Thermal conductive grease. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0033] It should be noted that when a component is referred to as "fixed to," "placed," "equipped with," "provided with," "arranged on," or "connected to" another component, it can be directly on the other component or may have an intervening component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or may have an intervening component present.
[0034] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0035] Please refer to Figures 1-4 To better understand the specific structure of this utility model. Figure 1 As shown, a thermal grease applicator includes:
[0036] The base 1 has a positioning through hole 101; the positioning through hole 101 is matched with the scraping base surface 4;
[0037] Perforated plate 2, placed on the upper end face of base 1, has a number of densely packed small holes 201;
[0038] The scraper plate 3 is placed on the upper end face of the perforated plate 2;
[0039] The scraper plate 3 is configured to use pressure to squeeze the thermally conductive silicone grease through a plurality of densely packed small holes 201 and apply it to the scraper base surface 4.
[0040] In specific implementation, a positioning through hole 101 is provided on the base 1 to cooperate with the base surface 4 for scraping, so that the scraping jig can be positioned on the base surface 4 for scraping, preventing the jig from moving during construction and affecting the neatness of the scraped surface; a perforated plate 2 with several dense small holes 201 is provided, so that the thermal grease can be evenly applied to the base surface 4 for scraping through each small hole, solving the problem of different heat dissipation effect caused by different construction standards of different personnel; a scraping plate 3 is provided, so that the thermal grease can be pressed into the dense small holes 201 by the scraping plate 3, making the construction process simpler and more standardized, and achieving the best heat dissipation effect.
[0041] In the embodiments provided by this utility model, such as Figure 2 As shown, the base 1 is a U-shaped structure composed of a base plate 102 and side walls 103, and both side walls 103 are provided with elongated perforated slides 104; the positioning through hole 101 is provided on the base plate 102.
[0042] One end of the slide 104 is provided with a disassembly hole 105; the disassembly hole 105 is connected to the slide 104, and the hole diameter is greater than the width of the slide 104.
[0043] The shape of the positioning through hole 101 is the same as the shape of the scraping base surface 4.
[0044] It should be noted that the base plate 102 and side wall 103 of the base 1 are preferably fixedly connected by welding, and the slide 104, positioning through hole 101 and disassembly hole 105 can all be made by laser drilling.
[0045] It should be noted that the disassembly hole 105 is used to facilitate the installation and disassembly of the locating pin 301 of the scraper plate 3 mentioned later, which is in conjunction with the slide rail 104.
[0046] It should be noted that the positioning through hole 101 has the same shape as the base surface 4 and the inner diameter is consistent with the outer diameter of the base surface 4. During construction, the positioning through hole 101 can be fitted onto the base surface 4 for positioning of the overall fixture.
[0047] In practice, the base 1 is equipped with a positioning through hole 101 structure, which can better position the overall fixture during construction and prevent uneven coating or displacement. The slide 104 can provide a limited construction path for the scraper plate 3, ensuring that different operators can achieve a uniform scraping effect.
[0048] In one embodiment, the perforated plate 2, such as Figure 2 , Figure 3 As shown, it is a flat plate structure with a width ≤ the width of the base plate 102 of the base 1 and a thickness of 0.05mm to 1.5mm.
[0049] A plurality of the densely packed small holes 201 form a penetration region 202 of the thermally conductive silicone grease on the perforated plate 2; the penetration region 202 has the same shape as the positioning through hole 101.
[0050] The densely packed small holes 201 have a horizontal cross-sectional shape of circular, square, or polygonal, and a hole diameter of 0.1mm to 2mm; the hole spacing between the densely packed small holes 201 is 0.2mm to 2.5mm.
[0051] It should be noted that the width of the perforated plate 2 can be less than or equal to the width of the base plate 102, so that the perforated plate 2 can be freely installed on the base plate 102.
[0052] It should be noted that the thickness of the perforated plate 2 should not be too thick, otherwise too much thermal grease will be left in the small holes, resulting in insufficient thermal grease on the base surface 4. The preferred hole diameter in this invention is 0.05mm to 1mm.
[0053] It should be noted that the shape and size of the penetration area 202 are the same as those of the positioning through hole 101, which can ensure that the thermal grease can be completely adhered to the base surface 4.
[0054] It should be noted that the shape of the densely packed small holes 201 is preferably circular or hexagonal; the hole diameter is preferably 0.1mm to 1.5mm; the hole spacing between the densely packed small holes 201 is 0.5mm to 2mm; the hole diameter and hole spacing should not be too large, as this can easily lead to waste of thermal grease, insufficient coating amount, and sparse coating spacing, thereby affecting the heat dissipation effect.
[0055] In practice, the penetration area 202 formed by the dense small holes 201 on the perforated plate 2 can limit the coating range to the area of the coating base surface 4, avoiding irregular or uneven adhesion of thermal grease due to different operators or the same operator using different methods.
[0056] In one embodiment, such as Figure 2 As shown, a groove 106 with the same thickness as the perforated plate 2 is formed between the base plate 102 and the two side walls 103 of the base 1. The perforated plate 2 can be fitted into the groove 106. Rotatable limiting blocks 107 are formed at both ends of the base 1. After the perforated plate 2 is installed in the groove 106, the two limiting blocks 107 are rotated 90° to position the perforated plate 2 on the base plate 102. The penetration area 202 can be aligned with the positioning through hole 101, which facilitates the positioning of the perforated plate 2 during construction and prevents the scraping range from shifting.
[0057] In the embodiments provided by this utility model, such as Figure 2As shown, positioning pins 301 are provided on both sides of the scraper plate 3; the positioning pins 301 have the same diameter as the width of the slide 104, are connected to the base 1 through the slide 104, and can move along the slide 104; the positioning pins 301 can be disconnected from the base 1 from the disassembly hole 105.
[0058] The rear end of the scraper 3 is provided with a handle 302; the handle 302 and the scraper 3 form an angle, the angle being less than 180° and greater than 90°.
[0059] It should be noted that the scraper plate 3, the positioning pin 301 and the handle 302 can be manufactured by laser cutting in one piece, or they can be fixed by welding.
[0060] In practice, the positioning pin 301 can position the construction path of the scraper 3 and the slide 104, which facilitates the standardization of construction and achieves the best heat dissipation effect; the scraper 3 and the handle 302 form an angle, preferably 30°, which can better meet the operating habits of personnel during construction from an ergonomic point of view.
[0061] In one embodiment, the base 1, the perforated plate 2, and the scraper handle 302 are all made of stainless steel; and / or, the scraper base surface 4 is the heat dissipation end surface of the electronic component.
[0062] It should be noted that electronic components may include, but are not limited to, CPUs, GPUs, chipsets, IGBT modules, rectifier bridge modules, or thick film resistors.
[0063] It should be noted that the coating fixtures can be made in a series for different electronic components’ base surfaces 4. Different types of coating fixtures have different shapes of positioning through holes 101 and perforated plates 2 (the shapes of the positioning through holes 101 and the penetration areas 202 of the perforated plates 2 are the same as the heat dissipation end faces of the electronic components). During construction, the fixture corresponding to the base surface 4 should be selected.
[0064] It should be noted that, as Figure 4 As shown, the method of using this scraping jig is as follows:
[0065] 1. Select the thermal grease application jig corresponding to the base surface 4;
[0066] 2. Install the perforated plate 2 into the slide groove 106 of the base 1, and rotate the limiting blocks 107 at both ends to position the perforated plate 2. If there is no slide 104 and limiting block 107, lay the perforated plate 2 flat on the base plate 102 and use double-sided tape to firmly stick the perforated plate 2 to the base 1. Ensure that the permeation area 202 is aligned and overlapped with the positioning through hole 101.
[0067] 3. Insert the positioning pin 301 of the scraper plate 3 through the disassembly hole 105 and into the slide 104 to ensure that the scraper plate 3 can move freely and flexibly along the slide 104. At this point, the scraper fixture assembly is complete.
[0068] 4. Fit the positioning through hole 101 of the assembled scraping jig onto the scraping base surface 4, so that the lower end face of the perforated plate 2 is in close contact with the scraping base surface 4;
[0069] 5. Apply an appropriate amount of thermal grease 5 evenly between the scraper plate 3 and the perforated plate 2;
[0070] 6. Move the scraper plate 3 back and forth along the slide 104 to squeeze the thermal grease 5 through the dense small holes 201 of the penetration area 202 and apply it to the scraper base surface 4;
[0071] 7. Repeat step 6 until the thermal grease 5 evenly fills all the densely packed small holes 201;
[0072] 8. After the coating is completed, remove the coating jig and check the adhesion of the thermal grease 5. If the thermal grease 5 is evenly coated on the coating base surface 4, the entire construction process is complete; if the thermal grease 5 is not evenly adhered, wipe the thermal grease 5 clean and repeat the above steps.
[0073] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.
[0074] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A thermal grease application fixture, characterized in that, include: The base has a positioning through hole; the positioning through hole mates with the base surface to be coated; A perforated plate, placed on the upper surface of the base, has a number of densely packed small holes; A scraper plate is placed on the upper end face of the perforated plate; The squeegee is configured to apply the thermally conductive silicone grease through a plurality of densely packed small holes onto the squeegee base surface using pressure.
2. The thermal grease application fixture according to claim 1, characterized in that, The base is a U-shaped structure consisting of a base plate and side walls, with elongated perforated slides on both side walls; the positioning through holes are provided on the base plate.
3. The thermal grease application fixture according to claim 2, characterized in that, One end of the slide is provided with a disassembly hole; the disassembly hole is connected to the slide and the diameter of the hole is greater than the width of the slide.
4. The thermal grease application fixture according to claim 1, characterized in that, The shape of the positioning through hole is the same as the shape of the base surface for scraping.
5. The thermal grease application fixture according to claim 1, characterized in that, The perforated plate is a flat plate structure with a width less than or equal to the width of the base plate and a thickness of 0.05mm to 1.5mm.
6. The thermal grease application fixture according to claim 1, characterized in that, A plurality of the densely packed small holes form a penetration area of the thermally conductive silicone grease on the perforated plate; the penetration area has the same shape as the positioning through hole.
7. The thermal grease application fixture according to claim 6, characterized in that, The densely packed micropores have a horizontal cross-sectional shape of circular, square, or polygonal, with a diameter of 0.1mm to 2mm; the spacing between the micropores is 0.2mm to 2.5mm.
8. The thermal grease application fixture according to claim 3, characterized in that, The coating blade has positioning pins on both sides; the positioning pins have the same diameter as the width of the slide, are connected to the base through the slide, and can move along the slide; the positioning pins can be disconnected from the base from the disassembly hole.
9. The thermal grease application fixture according to claim 8, characterized in that, The scraper has a handle at its rear end; the handle and the scraper form an angle, which is less than 180° and greater than 90°.
10. The thermal grease application fixture according to claim 1, characterized in that, The base, perforated plate, and scraper handle are all made of stainless steel; and / or, the scraper base surface is the heat dissipation end face of the electronic component.