Application aid and application device

CN224712349UActive Publication Date: 2026-09-04BEIJING LIZHENG TECH CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202522244043.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-10-23
Publication Date
2026-09-04
Estimated Expiration
2035-10-23

AI Technical Summary

Technical Problem

这种涂覆方式导致操作效率较低且难以实现标准化作业,同时导热硅脂的用量难以精确控制,操作人员为了确保完全覆盖,往往会涂抹过量的导热硅脂,这不仅造成材料浪费,而且在散热器安装压紧后,多余的导热硅脂会溢出,可能会污染其他元器件,还需要耗费额外工时进行清理,此外,涂抹层的厚度与均匀性严重依赖操作人员的经验和熟练度,导致散热性能的一致性和可靠性难以保证

Benefits of technology

[0018]本申请提供的涂抹辅助工具,通过定位组件将工具本体与目标物进行定位,以使目标物的待涂抹区域与漏孔对齐,从而可将容纳腔体内的目标填充剂通过漏孔填充至目标物的待涂抹区域上。由上述示例可知,本申请提供的涂抹辅助工具,结构更加简化,成本低廉,可实现精确定量与定位,避免导热介质等目标填充剂的浪费。此外,通过底板上的漏孔,能够精确控制导热介质等目标填充剂的涂抹位置、形状和用量,确保涂层均匀且用量恰到好处,从根本上避免了因过量涂抹而导致的导热介质等目标填充剂溢出问题,节约了材料成本,并省去了后续的清洁工序。同时,在刮涂过程中,导热介质等目标填充剂始终被约束在工具主体的容纳腔体内,有效防止了导热介质等目标填充剂的沾染和扩散,保持了作业台面的整洁,提高了导热介质等目标填充剂的填充效率。

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224712349U_ABST
    Figure CN224712349U_ABST
Patent Text Reader

Abstract

The application discloses a coating auxiliary tool and a coating device, and relates to the technical field of tools, which comprises a tool body and a positioning assembly; the tool body comprises a surrounding wall and a bottom plate connected with the surrounding wall, the surrounding wall and the bottom plate surround to form a containing cavity capable of containing a target filler, and at least one leakage hole is arranged on the bottom plate; the positioning assembly is arranged on the side of the bottom plate away from the containing cavity, and is used for positioning a target object so that a to-be-coated area of the target object is aligned with the leakage hole. The application can realize accurate metering and positioning of a heat-conducting medium. In addition, the coating position, shape and amount of the heat-conducting medium can be accurately controlled through the leakage hole on the bottom plate, the problem of heat-conducting medium overflow caused by excessive coating is fundamentally avoided, and the filling efficiency of the heat-conducting medium is improved. Meanwhile, in the process of blade coating, the heat-conducting medium can be always constrained in the containing cavity of the tool body, and the contamination and diffusion of the heat-conducting medium are effectively prevented.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This application relates to the field of tool technology, and more specifically, to an application aid tool and application device. Background Technology

[0002] In related technical fields, to ensure good heat conduction efficiency between the heat-generating module and the heat sink, a thermally conductive medium, such as thermal grease, is typically applied to the contact interface. Traditional thermal grease application relies heavily on manual operation. Operators usually squeeze the grease directly onto the surface of the heat-generating module and then spread it using a scraper or spatula. This method results in low operational efficiency and difficulty in standardizing operations. Furthermore, the amount of thermal grease used is difficult to control precisely; operators often apply excessive amounts to ensure complete coverage. This not only wastes material but also causes excess grease to overflow after the heat sink is installed and tightened, potentially contaminating other components and requiring additional cleaning time. Moreover, the thickness and uniformity of the coating heavily depend on the operator's experience and skill, making it difficult to guarantee consistent and reliable heat dissipation performance. Utility Model Content

[0003] In view of this, the purpose of this application is to provide a coating aid tool to achieve rapid, precise quantitative and accurate coating of thermal conductive medium onto the heating module.

[0004] Another objective of this application is to provide an application device having the aforementioned application aids.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] An application aid tool, comprising:

[0007] The tool body includes a surrounding wall and a base plate connected to the surrounding wall. The surrounding wall and the base plate form a receiving cavity capable of containing a target filler. At least one leakage hole is provided on the base plate.

[0008] A positioning component is disposed on the side of the base plate opposite to the receiving cavity. The positioning component is used to position the target object so that the area of ​​the target object to be coated is aligned with the drain hole.

[0009] Optionally, in the above-mentioned application aid tool, the positioning component includes a plurality of limiting members, each of which is symmetrically distributed on the side of the base plate away from the receiving cavity, and the limiting members are used to abut against the side or corner of the target object.

[0010] Optionally, in the above-mentioned application aid tool, the limiting member includes two limiting parts arranged perpendicularly to each other, and a limiting space is formed between the two limiting parts to accommodate the corner of the target object.

[0011] Optionally, in the above-mentioned application aid, the positioning component includes a limiting groove, the contour of which is adapted to the outer contour of the target object.

[0012] Optionally, the above-mentioned application aid tool also includes a grip, which is connected to the tool body.

[0013] Optionally, in the above-mentioned application aid tool, the gripping member includes a connecting section and a gripping section. The connecting section is used to connect to the wall of the tool body, and the connecting section has a first connecting end connected to the gripping section and a second connecting end connected to the wall. The cross-sectional area of ​​the connecting section gradually decreases from the first connecting end to the second connecting end.

[0014] Optionally, in the above-mentioned application aid tool, the grip is integrally formed with the tool body.

[0015] Optionally, in the above-mentioned application aid tool, the perforation is a strip-shaped or waist-shaped perforation.

[0016] Optionally, in the above-mentioned application aid tool, there are multiple holes, and each of the holes is distributed in an array on the base plate.

[0017] An application device includes a scraping tool and an application aid as described in any of the preceding claims.

[0018] The application aid tool provided in this application positions the tool body and the target object through a positioning component, aligning the area to be applied on the target object with the drain hole. This allows the target filler within the receiving cavity to be filled onto the area of ​​the target object through the drain hole. As shown in the above example, the application aid tool provided in this application has a simpler structure, lower cost, and can achieve precise quantitative and positioning, avoiding waste of target fillers such as heat-conducting media. Furthermore, the drain hole on the base plate allows for precise control of the application position, shape, and amount of target filler such as heat-conducting media, ensuring a uniform coating and just the right amount. This fundamentally avoids the problem of overflow of target filler such as heat-conducting media due to over-application, saving material costs and eliminating subsequent cleaning procedures. Simultaneously, during the scraping process, the target filler such as heat-conducting media is always confined within the receiving cavity of the tool body, effectively preventing contamination and diffusion of the target filler such as heat-conducting media, maintaining a clean work surface, and improving the filling efficiency of target filler such as heat-conducting media.

[0019] The technical features mentioned above, those to be mentioned below, and those shown individually in the accompanying drawings can be combined arbitrarily, provided that the combined technical features are not contradictory. All feasible combinations of features are the technical content explicitly described herein. Any one of the multiple sub-features contained in the same statement can be applied independently, without necessarily being applied together with other sub-features. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1 Schematic diagram of the structure of the application tool provided in the embodiments of this application Figure 1 ;

[0022] Figure 2 Schematic diagram of the structure of the application tool provided in the embodiments of this application Figure 2 ;

[0023] Figure 3 Schematic diagram of the structure of the application tool provided in the embodiments of this application Figure 3 ;

[0024] Figure 4 This is a schematic diagram of the assembly of the application application tool and the target object provided in the embodiments of this application;

[0025] Figure 5 A schematic diagram illustrating the filling of the target filler into the application aid tool provided in this embodiment of the application;

[0026] Figure 6 This is a schematic diagram of the scraping tool provided in the embodiments of this application;

[0027] Figure 7 This is a schematic diagram of coating a target object with a target filler according to an embodiment of this application.

[0028] Among them, 100 is the application aid tool, 10 is the tool body, 11 is the enclosure, 12 is the base plate, 20 is the receiving cavity, 30 is the drain hole, 40 is the positioning component, 41 is the limiting component, 411 is the limiting part, 4111 is the limiting space, 50 is the gripping component, 51 is the connecting section, 52 is the gripping section, 200 is the target filler, 300 is the scraping tool, and 400 is the target object. Detailed Implementation

[0029] The core of this application is to provide a coating aid tool to achieve rapid, precise quantitative and accurate coating of thermal conductive medium onto the heating module.

[0030] Another key aspect of this application is to provide an application device having the aforementioned application aids.

[0031] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] In related technical fields, especially in the assembly and maintenance of electronic devices, in order to ensure good heat conduction efficiency between high-power heat-generating modules such as central processing units and graphics processors and heat sinks, it is usually necessary to coat a layer of thermally conductive medium, such as thermal grease, at the contact interface between the two.

[0033] Traditional thermal grease application relies heavily on manual operation. Operators typically squeeze the grease directly onto the surface of the heat-generating module and then spread it using a scraper or spatula. This method results in low efficiency and difficulty in standardizing operations. Furthermore, the amount of grease used is difficult to control precisely. To ensure complete coverage, operators often apply excessive amounts, leading to material waste. After the heatsink is installed and tightened, excess grease may overflow, potentially contaminating other components and requiring additional cleaning time. Moreover, the thickness and uniformity of the coating heavily depend on the operator's experience and skill, making it difficult to guarantee consistent and reliable heat dissipation performance.

[0034] Therefore, such as Figure 1As shown in the illustration, this application discloses an application aid tool 100, including a tool body 10 and a positioning component 40. Using this application aid tool 100, precise quantitative measurement and positioning of the target filler 200 can be achieved, avoiding waste of the target filler 200. Furthermore, through the perforations 30 on the base plate 12, the application position, shape, and amount of the target filler 200 can be precisely controlled, ensuring a uniform coating and just the right amount, fundamentally avoiding the problem of target filler 200 overflowing due to over-application, saving material costs, and eliminating the need for subsequent cleaning procedures. Simultaneously, during the application process, the target filler 200 is always confined within the receiving cavity 20 of the tool body 10, effectively preventing contamination and diffusion of the target filler 200, maintaining a clean work surface, and improving the filling efficiency of the target filler 200. It should be noted that in this application, the target filler 200 can be a thermally conductive medium, such as thermal grease, to fill the interface between the heat-generating module and the heat sink, thereby improving thermal conductivity. Alternatively, the target filler 200 can be a sealing medium, such as silicone, to fill the connection between two mounting components, thereby improving sealing. Unless otherwise specified below, the target filler 200 refers to thermally conductive media such as thermal grease.

[0035] The following will combine Figures 1 to 7 The application assistance tool 100 disclosed in the embodiments of this application will be explained and described in detail.

[0036] like Figure 1 As shown, the tool body 10 is the core component for achieving quantitative and targeted coating of the target filler 200. The tool body 10 can adopt a rectangular frame structure. To reduce costs and ensure sufficient structural strength and wear resistance, the tool body 10 can be manufactured from engineering plastics through injection molding, such as polycarbonate. Of course, in applications requiring higher precision and durability, the tool body 10 can also be made from metal materials such as aluminum alloy through CNC machine tools.

[0037] like Figure 1 and Figure 5 As shown, the tool body 10 may include a surrounding wall 11 and a base plate 12. The surrounding wall 11 may be formed by extending vertically upward from the four edges of the base plate 12, and needs to have a certain height, such as 5mm to 15mm, so that the receiving cavity 20 formed by the surrounding wall 11 and the base plate 12 can have sufficient volume to accommodate a sufficient amount of target filler 200 in a single application operation. At the same time, it can also effectively prevent the target filler 200 from overflowing from the receiving cavity 20 during subsequent scraping operations, thereby keeping the work area clean. In order to reduce the adhesion of the target filler 200 and facilitate cleaning, the inner surfaces of the surrounding wall 11 and the base plate 12 may be smooth planes to reduce the adhesion of the target filler 200.

[0038] like Figure 1 As shown, the base plate 12 is connected to the enclosure wall 11, together forming the overall frame structure of the tool body 10. The base plate 12 has a smooth inner surface and an outer surface, wherein the inner surface of the base plate 12 forms the bottom of the receiving cavity 20, allowing the scraping tool 300, such as a scraper, to move along the inner surface of the base plate 12 during the scraping operation. Figure 6 As shown. Simultaneously, at least one drain hole 30 can be formed on the base plate 12; that is, one, two, three, or more drain holes 30 can be used, and the drain hole 30 penetrates the inner and outer surfaces of the base plate 12, serving as a channel for the target filler 200 to be transferred from the receiving cavity 20 to the surface of the target object 400. The drain hole 30 can be aligned with the area of ​​the target object 400 to be coated, and the shape, size, number, and layout of the drain holes 30 directly determine the thickness and position of the target filler 200 finally coated on the surface of the target object 400. It should be noted that the target object 400 can be a heating module, a heat sink, or a sealing mounting component, etc. Unless otherwise specified below, the target object 400 refers to the heating module.

[0039] In some embodiments, such as Figure 1 As shown, multiple holes 30 can be used, and each hole 30 is distributed in an array on the base plate 12. That is, each hole 30 can be distributed in a linear array or a ring array on the base plate 12 to ensure that the target object 400 has a larger application area of ​​the target filler 200, thereby ensuring that the target filler 200 and the target object 400 have a larger contact area, which can improve the heat conduction efficiency.

[0040] In some embodiments, such as Figures 1 to 3 As shown, the perforations 30 can be parallel strip-shaped or oblong-shaped holes, allowing the strip-shaped target filler 200 to spread evenly to both sides after the heat sink is compressed. This effectively fills the tiny gaps between the contact interfaces and expels air. For example, if the target object 400 is a heating module with a cross-sectional area of ​​20mm × 40mm, then each perforation 30 can be 2mm wide and 4mm long. The length direction of the perforation 30 can be parallel to the length direction of the target object 400. Furthermore, the distance between two adjacent perforations 30 can be 4mm in the width direction and 8mm in the length direction. Of course, the dimensions of the perforations 30 can be precisely adjusted according to the heat dissipation requirements of different models of heating modules.

[0041] like Figures 1 to 4As shown, the positioning component 40 can be disposed on the side of the base plate 12 away from the receiving cavity 20. When the target object 400 needs to be coated with the target filler 200, the tool body 10 can be flipped so that the positioning component 40 faces upward. At this time, the coating surface of the target object 400 can be attached to the side of the base plate 12 away from the receiving cavity 20. At the same time, the positioning component 400 can be used to position the target object 400 so that the area to be coated on the coating surface of the target object 400 is aligned with the drain hole 30, ensuring that the target filler 200 can be accurately filled into the area to be coated on the coating surface of the target object 400.

[0042] In some embodiments, such as Figure 2 As shown, the positioning component 40 may include multiple limiting members 41, that is, the limiting members 41 may be two, three, four or more, and each limiting member 41 may be symmetrically distributed on the side of the base plate 12 away from the receiving cavity 20. The limiting members 41 may be integrally set on the side of the base plate 12 away from the receiving cavity 20, or may be fixed to the side of the base plate 12 away from the receiving cavity 20 by welding or bolting, so as to abut the side or corner of the target object 400, thereby limiting the fit between the target object 400 and the tool body 10, so that the area to be coated on the coating surface of the target object 400 is aligned with the drain hole 30, ensuring that the target filler 200 can be accurately filled into the area to be coated on the coating surface of the target object 400.

[0043] In some embodiments, such as Figure 2 As shown, the limiting member 41 can adopt an L-shaped structure, that is, the limiting member 41 can include two limiting parts 411 arranged perpendicularly to each other, and a limiting space 4111 is formed between the two limiting parts 411 to accommodate the corners of the target object 400, so that the limiting parts 411 can abut against the two mutually perpendicular sides of the target object 400, thereby limiting the target object 400. Among them, four limiting members 41 can be used, and each limiting member 41 can be symmetrically distributed at the corners of the base plate 12, so that the inner sidewalls of the four limiting members 41 together form a rectangular positioning area that can accommodate the target object 400, and the rectangular positioning area is adapted to the outer contour of the target object 400 to be coated. For example, if the target object 400 is a heating module with a cross-sectional area of ​​20mm×40mm, the inner dimension of the rectangular positioning area can be 20.2mm×40.2mm, thereby ensuring sufficient positioning accuracy while leaving a small gap to facilitate the insertion and removal of the heating module. When the heating module is placed in the rectangular positioning area, its sides and corners will abut against the inner wall of the limiting member 41, thereby being precisely restricted within the rectangular positioning area to ensure that the area to be coated on the heating module is precisely aligned with the drain hole 30 of the base plate 12.

[0044] In some embodiments, the positioning component 40 may include a limiting groove, and the contour of the limiting groove is adapted to the outer contour of the target object 400. That is, the inner wall of the limiting groove forms the receiving boundary of the target object 400. For example, if the target object 400 is a heating module with a cross-sectional area of ​​20mm×40mm, the size of the limiting groove can be designed to be 20.2mm×40.2mm to provide a single-sided gap of 0.1mm, thereby ensuring easy insertion and removal of the heating module and achieving high-precision positioning.

[0045] like Figures 1 to 4 As shown, for ease of operation, the application aid tool 100 may also include a grip 50, and the grip 50 may be detachably connected to the tool body 10 by means of bolts or other means, or may be integrally formed with the tool body 10.

[0046] In some embodiments, such as Figures 1 to 4 As shown, the gripper 50 may include a connecting section 51 and a gripping section 52. The connecting section 51 has a first connecting end that connects to the gripping section 52 and a second connecting end that connects to the wall 11 of the tool body 10. The cross-sectional area of ​​the connecting section 51 gradually decreases from the first connecting end to the second connecting end. Simultaneously, the second connecting end of the connecting section 51 may be provided with an external thread, and the wall 11 of the tool body 10 may be provided with an internal threaded hole that mates with the external thread, thereby allowing the gripper 50 to be bolted to the wall 11 of the tool body 10. By employing a detachable connection method such as a threaded connection, the gripper 50 can be conveniently and detachably installed to the wall 11 of the tool body 10. This not only facilitates the packaging and transportation of the application aid tool 100 but also allows for the replacement of grippers 50 of different shapes or lengths according to the user's operating habits or work requirements. During operation, the operator can hold the gripper 50 to perform stable actions such as picking up, placing, flipping, and demolding of the entire application aid tool 100.

[0047] When applying the target filler 200 to the target object 400 (heating module), the operator first positions and installs the target object 400 with the application aid 100 by flipping and inverting the application aid 100 so that the side of the base plate 12 of the tool body 10 facing away from the receiving cavity 20 is facing upwards, and then places it stably on the workbench. The operator then places the target object 400 from above on the side of the base plate 12 facing away from the receiving cavity 20, allowing it to fall into the rectangular positioning area defined by the four limiting members 41. Under the action of gravity, the side of the target object 400 will naturally abut against the inner wall of the limiting member 41, thus achieving rapid and accurate positioning. Then, the operator holds the grip 50, and as a whole, smoothly flips the application aid 100 carrying the target object 400 180 degrees, and then places it on the workbench. The operator places an appropriate amount of target filler 200 (thermal conductive grease) into the receiving cavity 20, and, as... Figure 6 As shown, the operator holds a scraping tool 300 at a certain angle (e.g., 45 degrees) against the upper surface of the base plate 12, applies moderate downward pressure, and scrapes back and forth once or twice along the length direction parallel or perpendicular to the holes 30. Under the pressure of the scraping tool 300, the target filler 200 is evenly pressed into and fills all the holes 30, and then transferred through the holes 30 and coated onto the surface of the target object 400 below. After the scraping is completed, the excess target filler 200 on the upper surface of the base plate 12 is scraped to the edge of the base plate 12 by the scraping tool 300, thereby ensuring that the amount of target filler 200 applied each time is strictly controlled within the total volume of the holes 30, achieving precise quantitative measurement; after the scraping operation is completed, the operator holds the gripper 50 and smoothly lifts the application aid 100 upward in the vertical direction, separating it from the target object 400, so that the coating of target filler 200 completely consistent with the holes 30 remains on the surface of the target object 400, such as... Figure 7 As shown.

[0048] The application assistance tool 100 disclosed in this application uses a positioning component 40 to position the tool body and the target object 400 so that the area to be applied on the target object 400 is aligned with the drain hole 30, thereby filling the target filler 200 in the receiving cavity 20 onto the area to be applied on the target object 400 through the drain hole 30.

[0049] The application aid tool 100 disclosed in this application has a simplified structure and low cost, enabling precise quantitative and positioning, and avoiding waste of the target filler 200 such as the heat-conducting medium. Furthermore, the perforations 30 on the base plate 12 allow for precise control of the application position, shape, and amount of the target filler 200, ensuring a uniform coating and just the right amount. This fundamentally avoids overflow of the target filler 200 due to over-application, saving material costs and eliminating the need for subsequent cleaning procedures. Simultaneously, during the application process, the target filler 200 is always confined within the receiving cavity 20 of the tool body 10, effectively preventing contamination and diffusion, maintaining a clean work surface, and improving the filling efficiency of the target filler 200.

[0050] This application also discloses a coating device, which may include a coating tool 300 and a coating auxiliary tool 100 as disclosed in the above embodiments. Therefore, it has all the technical effects of the coating auxiliary tool 100, and will not be described in detail here. It should be noted that the coating tool 300 may be a scraper, a scraper, etc., and is not limited here.

[0051] The terminology used in the above embodiments is for the purpose of describing specific embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions "a," "an," "the," "the," "the," and "this" are intended to also include expressions such as "one or more," unless the context clearly indicates otherwise. It should also be understood that in the embodiments of this application, "one or more" refers to one, two, or more; "and / or" describes the relationship between related objects, indicating that three relationships may exist; for example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0052] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0053] The "multiple" mentioned in the embodiments of this application refers to two or more. It should be noted that in the description of the embodiments of this application, terms such as "first" and "second" are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0054] The terms "parallel" and "perpendicular" used in this application refer to "basically parallel" and "basically perpendicular" in practical operation. "Basically parallel" can be understood as parallelism with a certain degree of error, and similarly, "basically perpendicular" can be understood as perpendicularity with a certain degree of error.

[0055] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An application aid tool, characterized in that, include: The tool body (10) includes a surrounding wall (11) and a base plate (12) connected to the surrounding wall (11). The surrounding wall (11) and the base plate (12) form a receiving cavity (20) capable of containing the target filler (200). At least one hole (30) is provided on the base plate (12). Positioning component (40) is disposed on the side of the base plate (12) away from the receiving cavity (20). The positioning component (40) is used to position the target object (400) so that the area of ​​the target object (400) to be coated is aligned with the drain hole (30).

2. The application aid tool according to claim 1, characterized in that, The positioning component (40) includes a plurality of limiting members (41), each of the limiting members (41) being symmetrically distributed on the side of the base plate (12) away from the receiving cavity (20), and the limiting members (41) being used to abut the side or corner of the target object (400).

3. The application aid tool according to claim 2, characterized in that, The limiting member (41) includes two limiting parts (411) arranged perpendicularly to each other, and a limiting space (4111) is formed between the two limiting parts (411) to accommodate the corner of the target object (400).

4. The application aid tool according to claim 1, characterized in that, The positioning component (40) includes a limiting groove whose contour is adapted to the outer contour of the target object (400).

5. The application aid tool according to claim 1, characterized in that, It also includes a grip (50) which is connected to the tool body (10).

6. The application aid tool according to claim 5, characterized in that, The grip (50) includes a connecting section (51) and a gripping section (52). The connecting section (51) is used to connect to the enclosure (11) of the tool body (10). The connecting section (51) has a first connecting end connected to the gripping section (52) and a second connecting end connected to the enclosure (11). The cross-sectional area of ​​the connecting section (51) gradually decreases from the first connecting end to the second connecting end.

7. The application aid tool according to claim 5, characterized in that, The grip (50) is integrally formed with the tool body (10).

8. The application aid tool according to claim 1, characterized in that, The leakage hole (30) is a strip-shaped hole or a waist-shaped hole.

9. The application aid tool according to any one of claims 1 to 8, characterized in that, There are multiple leak holes (30), and each of the leak holes (30) is arranged in an array on the base plate (12).

10. An applicator, characterized in that, It includes a scraping tool (300) and a smearing aid tool (100) as described in any one of claims 1 to 9.