Brushing jig for brushing heat-conducting silicone grease

Abstract

The utility model discloses a brushing jig for brushing heat-conducting silicone grease. The brushing jig comprises a brushing plate for brushing the heat-conducting silicone grease and a limiting plate for limiting a PCB (Printed Circuit Board) 13, the limiting plate is provided with a plurality of round holes used for being matched with cylinders formed on the PCB 13 and a positioning face used for making plane contact with one side of the PCB 13. A clamping groove used for clamping the PCB 13 and the limiting plate in a limiting mode is formed in one side of the brushing plate. The limiting plate is arranged on the periphery of the cylinder in a sleeving mode through the round hole so that the PCB 13 can be pressed and attached to the groove bottom of the clamping groove. A plurality of meshes used for brushing heat conduction silicone grease on the PCB 13 are formed in the groove bottom of the clamping groove. According to the brushing jig for brushing the heat-conducting silicone grease, the PCB 13 is coated with the heat-conducting silicone grease in a point mode, the heat conduction and heat dissipation effects are good, and the structural precision of the PCB 13 is not affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of coating thermal conductive silicone grease on a PCB board of a handling robot, and in particular relates to a coating jig for coating the thermal conductive silicone grease. Background Art

[0002] In the existing solution, the PCB board of the handling robot needs to be provided with thermal grease for heat transfer to achieve heat dissipation. Usually, such a thermal grease structure is a thermal grease layer attached to one side of the PCB board, that is, the formed thermal grease layer is fixedly connected by a fixed connection structure such as screws and positioning pins. Such a thermal grease layer and its installation structure not only have a complex installation structure that affects the structural installation accuracy of the PCB board, but also the entire layer of thermal grease is covered, which is not conducive to the arrangement and installation of components on the PCB board. Utility Model Content

[0003] The utility model provides a brushing jig for applying thermal conductive silicone grease to solve the above-mentioned technical problems, and specifically adopts the following technical solutions:

[0004] A brushing jig for applying thermal grease comprises: a brushing plate for applying thermal grease and a limiting plate for limiting a PCB board; the limiting plate is formed with a plurality of circular holes for matching with a cylinder formed on the PCB board and a positioning surface for a plane against one side of the PCB board; a card slot for limiting and inserting the PCB board and the limiting plate is formed on one side of the brushing plate; the limiting plate is sleeved on the outer circumference of the cylinder through the circular hole to press the PCB board to fit it to the bottom of the card slot; the bottom of the card slot is formed with a plurality of mesh holes for applying thermal grease to the PCB board.

[0005] Furthermore, a clamping recess for clamping the PCB board is formed at the bottom of the groove; a plurality of mesh holes are formed in the clamping recess.

[0006] Furthermore, the distance between two adjacent mesh holes is greater than or equal to 1 mm and less than or equal to 2 mm.

[0007] Furthermore, the limiting plate is formed with through slots for components on the PCB to pass through.

[0008] Furthermore, four corners of the limiting plate are formed with round chamfers for easy insertion into the through slot.

[0009] Furthermore, the depth of the slot is smaller than the thickness of the limiting plate.

[0010] Furthermore, a limiting groove for limiting the insertion of a painting tool is formed on the other side of the painting plate.

[0011] The utility model is beneficial in that the brushing jig provided for applying thermal grease positions the PCB board through the limiting plate, and then directly applies and fixes the thermal grease to the corresponding position on the PCB board through the mesh designed on the brushing plate. Such a thermal grease layer exists in a convex structure with a limited arrangement, and is distributed according to the corresponding installation spaces, which does not affect the arrangement and installation of components on the PCB board. The direct coating and fixing method makes the structure simpler and does not affect the structural installation accuracy of the PCB board. At the same time, the convex thermal grease layer can not only achieve a heat conduction effect, but the gaps formed between multiple convex thermal greases can form an air duct to guide hot air, thereby improving the overall heat dissipation of the PCB board. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 It is a schematic diagram of a brushing jig for applying thermal conductive silicone grease of the utility model;

[0014] A brushing jig 10 for applying thermal grease, a brushing plate 11, a limiting groove 111, a card slot (not shown), a snap-fitting recess (not shown), a mesh 112, a limiting plate 12, a circular hole 121, a positioning surface 122, a through groove 123, a circular chamfer 124, and a PCB board 13. DETAILED DESCRIPTION

[0015] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0016] like Figure 1As shown, a brushing jig 10 for applying thermal grease of the present application is provided, comprising: a brushing plate 11 and a limiting plate 12, wherein the brushing plate 11 is used for applying thermal grease, and the limiting plate 12 is used for limiting the position of the PCB board when applying thermal grease to the PCB board to ensure coating accuracy. The limiting plate 12 is formed with a plurality of circular holes 121 for matching with the cylinder formed on the PCB board, and the limiting plate 12 is also formed with a positioning surface 122 for plane contact with one side of the PCB board. A card slot is formed on one side of the brushing plate 11 for limiting the insertion of the PCB board and the limiting plate 12, and then the limiting plate 12 is sleeved on the outer circumference of the cylinder through the circular hole 121 to press the PCB board to fit the bottom of the card slot, so that the PCB board is positioned in the brushing plate 11 through the limiting plate 12. A plurality of mesh holes 112 are formed at the bottom of the card slot for applying thermal grease to the PCB board. When the limiting plate 12 positions the PCB board in the applying plate 11, one side of the mesh hole 112 is fitted with the surface of the PCB board, and thermal grease is applied to the upper surface of the mesh hole 112. The thermal grease adheres to the surface of the PCB board through the mesh hole 112 to form a uniform coating, thereby ensuring the consistency of the convex coating of the thermal grease, improving work efficiency, and allowing the thermal grease to be accurately and stably applied to the PCB board.

[0017] The brushing jig 10 for applying thermal grease mentioned in this solution positions the PCB board through the limiting plate 12, and then directly applies and fixes the thermal grease to the corresponding position on the PCB board through the mesh 112 designed on the brushing plate 11. Such a thermal grease layer exists in a convex structure with a limited arrangement, and is distributed according to the corresponding installation spaces, which does not affect the arrangement and installation of components on the PCB board. The direct coating and fixing method makes the structure simpler and does not affect the structural installation accuracy of the PCB board. At the same time, the convex thermal grease layer can not only achieve a thermal conductive effect, but the gaps formed between multiple convex thermal greases can form an air duct to guide hot air, thereby improving the overall heat dissipation of the PCB board.

[0018] As a specific implementation, a snap-fitting recess is formed at the bottom of the groove for snapping the PCB board, and a plurality of mesh holes 112 are formed in the snap-fitting recess, so that the horizontal displacement of the PCB board can be limited.

[0019] Furthermore, the distance between two adjacent mesh holes 112 is greater than or equal to 1 mm and less than or equal to 2 mm. In this way, while ensuring the thermal conductivity, the distance between the mesh holes 112 can be set to ensure the gap size, thereby realizing the air duct function.

[0020] As a specific implementation, the limiting plate 12 is formed with a through slot 123 for components on the PCB board 13 to pass through, thereby ensuring the portability of the structural limitation of the PCB board 13 .

[0021] As a specific implementation, the four corners of the limiting plate 12 are formed with round chamfers 124 to facilitate the limiting plate 12 to be inserted into the through slot 123, which is more portable. In addition, the depth of the slot is less than the thickness of the limiting plate 12, which makes it easy to take out the limiting plate 12.

[0022] As a specific implementation, a limiting groove 111 is formed on the other side of the painting plate 11 for limiting the insertion of the painting tool, thereby limiting the painting range of the painting tool and avoiding unnecessary waste of paint.

[0023] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the above embodiments do not limit the utility model in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the utility model.

Claims

1. A brushing jig for applying thermal grease, characterized in that: include: A coating plate for coating thermal grease and a limiting plate for limiting the PCB board; The limiting plate is formed with a plurality of circular holes for matching with the cylinders formed on the PCB board and a positioning surface for contacting one side of the PCB board with a plane; A slot for limiting and inserting the PCB board and the limiting plate is formed on one side of the painting plate; The limiting plate is sleeved on the outer circumference of the cylinder through the circular hole to press the PCB board to fit the bottom of the slot; The bottom of the card slot is formed with a plurality of mesh holes for applying thermal conductive silicone grease to the PCB board.

2. The brushing jig for applying thermal grease according to claim 1, characterized in that: The bottom of the groove is formed with a clamping recess for clamping the PCB board; A plurality of mesh holes are formed in the engaging recess.

3. The brushing jig for applying thermal grease according to claim 1, characterized in that: The distance between two adjacent mesh holes is greater than or equal to 1 mm and less than or equal to 2 mm.

4. The brushing jig for applying thermal grease according to claim 1, characterized in that: The limiting plate is formed with through slots for components on the PCB to pass through.

5. The brushing jig for applying thermal grease according to claim 4, characterized in that: The four corners of the limiting plate are formed with round chamfers for easy insertion into the through slot.

6. The brushing jig for applying thermal grease according to claim 1, characterized in that: The depth of the slot is smaller than the thickness of the limiting plate.

7. The brushing jig for applying thermal grease according to claim 1, characterized in that: A limiting groove for limiting and clamping a painting tool is formed on the other side of the painting plate.

Images