CN218959179U

CN218959179U - Circuit board capable of preventing burrs from being drilled

Info

Publication number: CN218959179U
Application number: CN202222546462.6U
Authority: CN
Inventors: 罗添发; 傅小翠; 任荣贞; 杨振江; 张学标
Original assignee: Shenzhen Jitong Electronics Co ltd
Current assignee: Shenzhen Jitong Electronics Co ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-05-02
Anticipated expiration: 2032-09-26

Abstract

The utility model relates to the field of circuit boards, and discloses a circuit board capable of preventing burrs from being drilled, which comprises a circuit board body, wherein mounting holes are symmetrically formed in the upper surface of the circuit board body in a penetrating manner along the center, a waterproof coating is coated on the outer surface of the circuit board body, a first colloid film is arranged in the circuit board body, a second colloid film is adhered on the upper surface of the first colloid film, and the waterproof coating comprises a first high polymer emulsion layer and a second high polymer emulsion layer. In the above-mentioned scheme, the circuit board is through setting up first colloid membrane and second colloid membrane, when carrying out the operation of drilling to the circuit board body, can drill out the inside colloid of first colloid membrane and second colloid membrane this moment for the inside that the inside colloid of first colloid membrane and second colloid membrane flowed into the drilling, the burr adhesion that will bore the produced at the inner wall of drilling, thereby guaranteed the smoothness of circuit board body, strengthened the practicality of device.

Description

Circuit board capable of preventing burrs from being drilled

Technical Field

The utility model relates to the technical field of circuit boards, in particular to a circuit board capable of preventing drilling burrs.

Background

The circuit board is a support body of the electronic components and is a carrier for the electronic components to be electrically connected with each other; in the drilling process of the circuit board, burrs are required to be prevented so as to ensure the quality of the circuit board.

When the existing circuit board is used, burrs are generated when the circuit board is drilled, and the use of the circuit board is affected at the moment, so that the practicability of the device is reduced; and when the circuit board is eroded by the liquid, damage to the circuit board is caused at this time, thereby causing an increase in the use cost thereof.

Disclosure of Invention

In order to overcome the above-mentioned drawbacks of the prior art, an embodiment of the present utility model provides a circuit board for preventing burrs from being drilled, so as to solve the problems existing in the prior art.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a prevent circuit board of drilling burr, includes the circuit board body, the upper surface of circuit board body is extended the central symmetry and is run through and has been seted up the mounting hole, the surface coating of circuit board body has waterproof coating, the inside of circuit board body is provided with first colloid membrane, the upper surface of first colloid membrane is adhered with the second colloid membrane.

As an alternative of the present utility model, the waterproof coating layer includes a first high polymer emulsion layer and a second high polymer emulsion layer, the outer surface of the first high polymer emulsion layer is coated with a second high polymer emulsion layer, and the surface area of the second high polymer emulsion layer is the same as the surface area of the circuit board body.

As an alternative of the present utility model, the first high molecular polymer emulsion layer is internally filled with a first additive layer, the second high molecular polymer emulsion layer is internally filled with a second additive layer, and the types of the first high molecular polymer emulsion layers are divided into: polyacrylate, polyvinyl acetate, styrene-butadiene rubber emulsion.

As an alternative scheme of the utility model, the circuit board body comprises a first substrate and mounting grooves, wherein the mounting grooves are symmetrically formed in the center of the upper surface of the first substrate, and the number of the mounting grooves is four.

As an alternative scheme of the utility model, the upper surface of the first substrate is clamped with the second substrate through the mounting groove, mounting rods are symmetrically and fixedly arranged on the center of the lower surface of the second substrate, and the number of the mounting rods is four.

As an alternative scheme of the utility model, the outer surface of the mounting rod is matched with the inner wall of the mounting groove, and the length of the mounting rod is the same as the depth of the mounting groove.

As an alternative scheme of the utility model, the middle part of the upper surface of the first substrate is provided with the mounting groove, the inner wall of the mounting groove is matched with the outer surface of the first colloid film, and one half of the depth of the mounting groove is the same as the thickness of the first colloid film.

The technical scheme of the utility model has the following beneficial effects:

in the scheme, the first colloid film and the second colloid film are arranged on the circuit board, when the circuit board body is drilled, colloid inside the first colloid film and the second colloid film is drilled at the moment, so that the colloid inside the first colloid film and the second colloid film flows into the drilled hole, burrs generated by the drilled hole are adhered to the inner wall of the drilled hole, smoothness of the circuit board body is guaranteed, and practicability of the device is enhanced; in the scheme, when the circuit board body is affected by liquid, the waterproof coating coated on the outer surface of the circuit board body can work, and then the first high-molecular polymer emulsion layer inside the waterproof coating can be combined with the second high-molecular polymer emulsion layer, the first additive layer and the second additive layer, so that waterproof coating is formed, the circuit board body is prevented from being corroded by liquid, and loss is reduced.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view showing the resolution of the components of the waterproof coating layer of the present utility model;

fig. 3 is a schematic diagram illustrating the splitting of the circuit board body according to the present utility model.

[ reference numerals ]

1. A circuit board body; 2. a mounting hole; 3. a waterproof coating; 4. a first colloidal film; 5. a second colloidal film; 11. a first substrate; 12. a mounting groove; 13. a second substrate; 14. a mounting rod; 15. a mounting groove; 31. a first high molecular polymer emulsion layer; 32. a second high molecular polymer emulsion layer; 33. a first additive layer; 34. a second additive layer.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

Example 1:

referring to fig. 1-3, a circuit board capable of preventing burrs of drilling holes comprises a circuit board body 1, wherein mounting holes 2 are symmetrically formed in the upper surface of the circuit board body 1 along the center in a penetrating manner, a waterproof coating 3 is coated on the outer surface of the circuit board body 1, a first colloid film 4 is arranged in the circuit board body 1, and a second colloid film 5 is adhered to the upper surface of the first colloid film 4;

the waterproof coating 3 includes a first high molecular polymer emulsion layer 31 and a second high molecular polymer emulsion layer 32, the outer surface of the first high molecular polymer emulsion layer 31 is coated with the second high molecular polymer emulsion layer 32, the surface area of the second high molecular polymer emulsion layer 32 is the same as the surface area of the circuit board body 1, the inside of the first high molecular polymer emulsion layer 31 is filled with a first additive layer 33, the inside of the second high molecular polymer emulsion layer 32 is filled with a second additive layer 34, and the types of the first high molecular polymer emulsion layer 31 are: the circuit board body 1 comprises a first substrate 11 and mounting grooves 12, the mounting grooves 12 are symmetrically formed in the center of the upper surface of the first substrate 11, the number of the mounting grooves 12 is four, the second substrate 13 is clamped on the upper surface of the first substrate 11 through the mounting grooves 12, mounting rods 14 are fixedly mounted on the lower surface of the second substrate 13 in a centered and symmetrical mode, the number of the mounting rods 14 is four, the outer surfaces of the mounting rods 14 are matched with the inner walls of the mounting grooves 12, the length of the mounting rods 14 is identical to the depth of the mounting grooves 12, mounting grooves 15 are formed in the middle of the upper surface of the first substrate 11, the inner walls of the mounting grooves 15 are matched with the outer surfaces of the first colloid film 4, and one half of the depth of the mounting grooves 15 is identical to the thickness of the first colloid film 4.

The beneficial effects are as follows: the mounting groove 12 and the mounting rod 14 are arranged to facilitate the connection of the first substrate 11 and the second substrate 13, so that the stability of the substrates during connection is ensured, and the loss is reduced.

Working principle:

when the circuit board body 1 is used, burrs are generated during drilling, and therefore the first colloid film 4 and the second colloid film 5 are arranged, when the circuit board body 1 is drilled, the colloid inside the first colloid film 4 and the second colloid film 5 is drilled, so that the colloid inside the first colloid film 4 and the second colloid film 5 flows into the drilled hole, burrs generated during drilling are adhered to the inner wall of the drilled hole, smoothness of the circuit board body 1 is guaranteed, and practicality of the device is enhanced.

In the above scheme, when the circuit board body 1 is used, in order to reduce the cost, the waterproof coating 3 is provided, when the circuit board body 1 is affected by liquid, the waterproof coating 3 coated on the outer surface of the circuit board body 1 works, and then the first high polymer emulsion layer 31 inside the waterproof coating 3 is combined with the second high polymer emulsion layer 32, the first additive layer 33 and the second additive layer 34, so that a waterproof coating is formed, thereby avoiding liquid from corroding the circuit board body 1 and reducing loss.

The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;

finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. The utility model provides a prevent circuit board of drilling burr, includes circuit board body (1), its characterized in that, mounting hole (2) have been seted up to the upper surface of circuit board body (1) central symmetry of extending, the surface coating of circuit board body (1) has waterproof coating (3), the inside of circuit board body (1) is provided with first colloid membrane (4), the upper surface of first colloid membrane (4) is adhered with second colloid membrane (5).

2. The drilling burr prevention circuit board according to claim 1, characterized in that the waterproof coating layer (3) comprises a first high molecular polymer emulsion layer (31) and a second high molecular polymer emulsion layer (32), the outer surface of the first high molecular polymer emulsion layer (31) is coated with the second high molecular polymer emulsion layer (32), and the surface area of the second high molecular polymer emulsion layer (32) is the same as the surface area of the circuit board body (1).

3. The circuit board against drill burrs according to claim 2, characterized in that the first high molecular polymer emulsion layer (31) is internally filled with a first additive layer (33), the second high molecular polymer emulsion layer (32) is internally filled with a second additive layer (34), the kinds of the first high molecular polymer emulsion layer (31) are divided into: polyacrylate, polyvinyl acetate, styrene-butadiene rubber emulsion.

4. The circuit board capable of preventing drilling burrs according to claim 1, wherein the circuit board body (1) comprises a first base plate (11) and mounting grooves (12), the mounting grooves (12) are symmetrically formed in the center of the upper surface of the first base plate (11), and the number of the mounting grooves (12) is four.

5. The circuit board for preventing drilling burrs according to claim 4, wherein the upper surface of the first substrate (11) is clamped with a second substrate (13) through the mounting groove (12), mounting rods (14) are symmetrically and fixedly mounted on the lower surface of the second substrate (13) along the center, and the number of the mounting rods (14) is four.

6. The drilling burr prevention circuit board according to claim 5, wherein an outer surface of the mounting bar (14) is fitted to an inner wall of the mounting groove (12), and a length of the mounting bar (14) is identical to a depth of the mounting groove (12).

7. The circuit board for preventing drilling burrs according to claim 4, wherein a mounting groove (15) is formed in the middle of the upper surface of the first substrate (11), the inner wall of the mounting groove (15) is matched with the outer surface of the first colloid film (4), and one half of the depth of the mounting groove (15) is the same as the thickness of the first colloid film (4).