Circuit board threading hole structure and electronic equipment

Abstract

The utility model provides a circuit board threading hole structure and electronic equipment. The circuit board threading hole structure comprises a board body and a protection piece, the board body is provided with a threading hole, the threading hole is used for a cable to pass through, the threading hole comprises an upper threading hole body, a middle threading hole body and a lower threading hole body, the upper threading hole body, the middle threading hole body and the lower threading hole body are communicated in sequence, and the protection piece is used for protecting the upper threading hole body, the middle threading hole body and the lower threading hole body. The protection piece comprises a first protection layer and a second protection layer, the first protection layer is formed on the inner wall of the upper threading hole body, and the second protection layer is formed on the inner wall of the lower threading hole body, so that the cable is connected with the first protection layer and the second protection layer in an abutting mode. Compared with a method in the prior art that the inner wall of the circuit board threading hole is uniformly coated with a solder resist coating to prevent the wire from being cut, the circuit board threading hole structure provided by the utility model can prevent the wire from being cut and is lower in production cost.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit board threading hole processing, and in particular relates to a circuit board threading hole structure and electronic equipment. Background Art

[0002] PCB threading holes are an indispensable part of product structure assembly. PCB perforation means passing the cable through the pre-opened threading holes on the PCB to electrically connect the cable to the PCB. However, since the edges of the threading holes are very sharp, it is easy to cut the cables. Therefore, the threading holes of the PCB need to be processed to eliminate the sharp edges. In traditional technology, the following methods are used to prevent the cables from being cut, such as: 1. The threading holes can be chamfered and polished; 2. The cables are wrapped with protective sleeves; 3. Soft glue is installed at the threading holes. However, the above solutions can solve the problem of cable cutting, but will cause the problem of rising costs.

[0003] In order to solve the above problems, the Chinese patent application number 201910730869.4 discloses a method for preventing the wear of wires on a printed circuit board, including a threading hole processing step: using a solder resist coating to increase the smoothness of the wire threading hole; a frame grinding step: using a local grinding process on the edges of the printed circuit board frame. The above scheme coats the wire hole with a solder resist coating to enhance the smoothness of the inner wall of the threading hole, thereby preventing the wire from being cut, and the cost of the solder resist coating is lower than the above methods.

[0004] However, since the solder resist coating needs to be completely coated on the inner wall of the threading hole, that is, the inner wall of the threading hole needs to be attached with the solder resist coating, a lot of coating materials are consumed, especially for multilayer boards with thicker solder resist coating, which leads to high costs.

[0005] Therefore, there is a need for a circuit board structure that can avoid wire cutting and has lower production costs. Utility Model Content

[0006] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a circuit board threading hole structure and an electronic device that can avoid wire cutting and have lower production costs.

[0007] The purpose of this disclosure is achieved through the following technical solutions:

[0008] A circuit board threading hole structure, comprising:

[0009] A plate body, wherein the plate body is provided with a threading hole, wherein the threading hole is used for passing cables, wherein the threading hole comprises an upper threading hole body, a middle threading hole body and a lower threading hole body, wherein the upper threading hole body, the middle threading hole body and the lower threading hole body are sequentially connected;

[0010] The protective member includes a first protective layer and a second protective layer, wherein the first protective layer is formed on the inner wall of the upper threading hole body, and the second protective layer is formed on the inner wall of the lower threading hole body, so that the cable abuts against the first protective layer and the second protective layer respectively.

[0011] In one embodiment, the first protective layer is an ink layer.

[0012] In one embodiment, the second protective layer is an ink layer.

[0013] In one embodiment, the first protective layer has a height of 0.1 mm-0.3 mm and a thickness of 10 μm-40 μm.

[0014] In one embodiment, the second protective layer has a height of 0.1 mm-0.3 mm and a thickness of 10 μm-40 μm.

[0015] In one embodiment, the first protective layer is protruding from the upper surface of the plate.

[0016] In one embodiment, the second protective layer is protruding from the lower surface of the plate.

[0017] In one embodiment, the plate body is further provided with a via hole, and an inner wall of the via hole is provided with a metal layer.

[0018] In one embodiment, there are multiple threading holes, and each threading hole is arranged in a one-to-one correspondence with the cable.

[0019] An electronic device comprises the circuit board threading hole structure described in any one of the above embodiments.

[0020] Compared with the prior art, the present invention has at least the following advantages:

[0021] In the above-mentioned circuit board threading hole structure, the board body is provided with a threading hole for the cable to pass through, and the threading hole includes an upper threading hole body, a middle threading hole body and a lower threading hole body which are connected in sequence, and the first protective layer is formed on the inner wall of the upper threading hole body, and the second protective layer is formed on the inner wall of the lower threading hole body, so that when the cable passes through the threading hole, it abuts against the first protective layer and the second protective layer respectively, so as to prevent the cable from being cut by the threading hole. Furthermore, since the first protective layer is formed on the upper threading hole body and the second protective layer is formed on the lower threading hole body, it is not necessary to form the entire inner wall of the threading hole, and only the first protective layer formed on the upper threading hole body and the second protective layer formed on the lower threading hole body are required to play a protective effect, thereby reducing the production cost of the circuit board threading hole structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic structural diagram of a circuit board threading hole structure according to an embodiment;

[0024] Figure 2 for Figure 1 The schematic diagram of the circuit board threading hole structure at position A is shown as a partial enlargement. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0028] The present disclosure provides a circuit board wire threading hole structure, comprising a board body and a protective member, the board body is provided with a wire threading hole, the wire threading hole is used for the cable to pass through, the wire threading hole comprises an upper wire threading hole body, a middle wire threading hole body and a lower wire threading hole body, the upper wire threading hole body, the middle wire threading hole body and the lower wire threading hole body are sequentially connected; the protective member comprises a first protective layer and a second protective layer, the first protective layer is formed on the inner wall of the upper wire threading hole body, and the second protective layer is formed on the inner wall of the lower wire threading hole body, so that the cable is respectively in contact with the first protective layer and the second protective layer.

[0029] The above-mentioned circuit board threading hole structure has a threading hole on the board body for the cable to pass through. The threading hole includes an upper threading hole body, a middle threading hole body and a lower threading hole body that are connected in sequence. The first protective layer is formed on the inner wall of the upper threading hole body, and the second protective layer is formed on the inner wall of the lower threading hole body, so that when the cable passes through the threading hole, it abuts against the first protective layer and the second protective layer respectively to prevent the cable from being cut by the threading hole. Furthermore, since the first protective layer is formed on the upper threading hole body and the second protective layer is formed on the lower threading hole body, it is not necessary to evenly coat the entire inner wall of the threading hole. Only the first protective layer formed on the upper threading hole body and the second protective layer formed on the lower threading hole body are needed to achieve a protective effect, thereby reducing the production cost of the circuit board threading hole structure.

[0030] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0031] like Figure 1 and Figure 2 As shown, a circuit board threading hole structure 10 of an embodiment includes a board body 100 and a protective member 200. The board body 100 is provided with a threading hole 110, and the threading hole 110 is used for the cable 10a to pass through. The threading hole 110 includes an upper threading hole body 111, a middle threading hole body 112 and a lower threading hole body 113, and the upper threading hole body 111, the middle threading hole body 112 and the lower threading hole body 113 are sequentially connected. Further, the protective member 200 includes a first protective layer 210 and a second protective layer 220, the first protective layer 210 is formed on the inner wall of the upper threading hole body 111, and the second protective layer 220 is formed on the inner wall of the lower threading hole body 113, so that the cable 10a is respectively in contact with the first protective layer 210 and the second protective layer 220, thereby preventing the cable from being cut.

[0032] In this embodiment, the first protective layer 210 is formed on the upper threading hole body 111, and the second protective layer 220 is formed on the lower threading hole body 113. The first protective layer 210 is an ink layer, and the ink is coated and formed on the upper threading hole body 111. The second protective layer 220 is an ink layer, and the ink is coated and formed on the lower threading hole body 113. That is, the middle threading hole body 112 does not need to be coated with a protective layer. When the cable 10a passes through the threading hole 110, the cable 10a is respectively in contact with the first protective layer 210 and the second protective layer 220, thereby preventing the cable 10a from being cut by the sharp edges of the upper threading hole body 111 and the lower threading hole body 113. Furthermore, for multi-layer circuit boards with smaller volumes, since the aperture of the threading holes 110 thereof is smaller, compared to conventional technologies, in the circuit board threading hole structure 10 of the present application, the inner walls of the threading holes 110 do not need to be entirely coated with a protective layer, that is, the upper threading hole body 111 is coated with a first protective layer 210, and the lower threading hole body 113 is coated with a second protective layer 220, thereby reducing the production cost of the circuit board threading hole structure.

[0033] In the above-mentioned circuit board wire threading hole structure 10, the board body 100 is provided with a wire threading hole 110 for the cable 10a to pass through, and the wire threading hole 110 includes an upper wire threading hole body 111, a middle wire threading hole body 112 and a lower wire threading hole body 113 which are connected in sequence, and a first protective layer 210 is formed on the inner wall of the upper wire threading hole body 111, and a second protective layer 220 is formed on the inner wall of the lower wire threading hole body 113, so that when the cable 10a passes through the wire threading hole 110, it respectively contacts the first protective layer 210 and the second protective layer 220 to prevent the cable 10a from being cut by the wire threading hole 110. Furthermore, since the first protective layer 210 is formed on the upper wire hole body 111 and the second protective layer 220 is formed on the lower wire hole body 113, there is no need to evenly coat the entire inner wall of the wire hole 110. Only the first protective layer 210 formed on the upper wire hole body 111 and the second protective layer 220 formed on the lower wire hole body 113 are needed to achieve a protective effect, thereby reducing the production cost of the circuit board wire hole structure.

[0034] like Figure 1 and Figure 2 As shown, in one embodiment, the first protective layer 210 is an ink layer. In this embodiment, the inner wall of the upper threading hole body 111 is coated with ink, so that the edge of the upper threading hole body 111 is no longer sharp, thereby preventing the cable 10a from being cut. Furthermore, since the circuit board itself needs to be coated with ink on the board surface, the protective layer is formed on the upper threading hole body 111 by the ink required for processing itself, which further reduces the production cost.

[0035] like Figure 1 and Figure 2As shown, in one embodiment, the second protective layer 220 is an ink layer. In this embodiment, the inner wall of the lower threading hole body 113 is coated with ink, so that the edge of the lower threading hole body 113 is no longer sharp, thereby preventing the cable 10a from being cut. Furthermore, since the circuit board itself needs to be coated with ink on the board surface, the protective layer is formed on the lower threading hole body 113 by the ink required for processing itself, which further reduces the production cost.

[0036] like Figure 1 and Figure 2 As shown, in one embodiment, the height of the first protective layer 210 is 0.1mm-0.3mm, and the thickness of the first protective layer 210 is 10μm-40μm. In this embodiment, the height of the first protective layer 210 is 0.1mm, and the thickness of the first protective layer 210 is 10μm. It can be understood that coating a first protective layer 210 with a thin thickness and a small height on the upper threading hole body 111 can protect the cable 10a.

[0037] like Figure 1 and Figure 2 As shown, in one embodiment, the height of the second protective layer 220 is 0.1mm-0.3mm, and the thickness of the second protective layer 220 is 10μm-40μm. In this embodiment, the height of the second protective layer 220 is 0.1mm, and the thickness of the second protective layer 220 is 10μm. It can be understood that coating a second protective layer 220 with a thin thickness and a small height on the lower threading hole body 113 can protect the cable 10a.

[0038] like Figure 1 and Figure 2 As shown, in one embodiment, the first protective layer 210 is convexly disposed on the upper surface of the board body 100. It can be understood that the first protective layer 210 extends along the inner wall of the upper threading hole body 111 to the upper surface of the board body, so that the edge of the upper threading hole body 111 is no longer sharp, and the first protective layer 210 is convexly disposed at the connection between the inner wall of the upper threading hole body 111 and the upper surface of the board body 100, thereby making the first protective layer 210 have a better protective effect on the cable 10a, preventing the cable 10a from being cut.

[0039] like Figure 1 and Figure 2As shown, in one embodiment, the second protective layer 220 is convexly disposed on the lower surface of the plate body 100. It can be understood that the second protective layer 220 extends along the inner wall of the lower threading hole body 113 to the lower surface of the plate body, so that the edge of the lower threading hole body 113 is no longer sharp, and the second protective layer 220 is convexly disposed at the connection between the inner wall of the lower threading hole body 113 and the lower surface of the plate body 100, thereby making the second protective layer 220 better protect the cable 10a and prevent the cable 10a from being cut.

[0040] like Figure 1 and Figure 2 As shown, in one embodiment, the board body 100 is further provided with a via hole 300, and a metal layer is attached to the via hole 300. It can be understood that the metal layer is attached to the via hole 300 so that the multilayer board is electrically connected through the via hole.

[0041] like Figure 1 and Figure 2 As shown, in one embodiment, the number of the threading holes 110 is multiple, and the multiple threading holes 110 are arranged one-to-one with the multiple cables 10a. In this embodiment, the number of the threading holes 110 is two, so that two cables 10a can pass through respectively.

[0042] The present application also provides an electronic device, comprising the circuit board threading hole structure 10 described in any one of the above embodiments.

[0043] Compared with the prior art, the present invention has at least the following advantages:

[0044] In the above-mentioned circuit board wire threading hole structure 10, the board body 100 is provided with a wire threading hole 110 for the cable 10a to pass through, and the wire threading hole 110 includes an upper wire threading hole body 111, a middle wire threading hole body 112 and a lower wire threading hole body 113 which are connected in sequence, and a first protective layer 210 is formed on the inner wall of the upper wire threading hole body 111, and a second protective layer 220 is formed on the inner wall of the lower wire threading hole body 113, so that when the cable 10a passes through the wire threading hole 110, it respectively contacts the first protective layer 210 and the second protective layer 220 to prevent the cable 10a from being cut by the wire threading hole 110. Furthermore, since the first protective layer 210 is formed on the upper wire hole body 111 and the second protective layer 220 is formed on the lower wire hole body 113, there is no need to evenly coat the entire inner wall of the wire hole 110. Only the first protective layer 210 formed on the upper wire hole body 111 and the second protective layer 220 formed on the lower wire hole body 113 are needed to achieve a protective effect, thereby reducing the production cost of the circuit board wire hole structure.

[0045] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the patent of the present disclosure shall be based on the attached claims.

Claims

1. A circuit board threading hole structure, characterized in that: include: A plate body, wherein the plate body is provided with a threading hole, wherein the threading hole is used to thread cables, wherein the threading hole comprises an upper threading hole body, a middle threading hole body and a lower threading hole body, wherein the upper threading hole body, the middle threading hole body and the lower threading hole body are sequentially connected; The protective member includes a first protective layer and a second protective layer, wherein the first protective layer is formed on the inner wall of the upper threading hole body, and the second protective layer is formed on the inner wall of the lower threading hole body, so that the cable abuts against the first protective layer and the second protective layer respectively.

2. The circuit board threading hole structure according to claim 1, characterized in that: The first protective layer is an ink layer.

3. The circuit board threading hole structure according to claim 1, characterized in that: The second protective layer is an ink layer.

4. The circuit board threading hole structure according to claim 1, characterized in that: The height of the first protective layer is 0.1 mm-0.3 mm, and the thickness of the first protective layer is 10 μm-40 μm.

5. The circuit board threading hole structure according to claim 1, characterized in that: The height of the second protective layer is 0.1 mm-0.3 mm, and the thickness of the second protective layer is 10 μm-40 μm.

6. The circuit board threading hole structure according to claim 1, characterized in that: The first protection layer is protrudingly disposed on the upper surface of the plate body.

7. The circuit board threading hole structure according to claim 1, characterized in that: The second protection layer is protrudingly disposed on the lower surface of the plate body.

8. The circuit board threading hole structure according to claim 1, characterized in that: The plate body is further provided with a conducting hole, and the inner wall of the conducting hole is provided with a metal layer.

9. The circuit board threading hole structure according to claim 1, characterized in that: The number of the threading holes is multiple, and the multiple threading holes are arranged in a one-to-one correspondence with the multiple cables.

10. An electronic device, characterized in that: A circuit board threading hole structure comprising any one of claims 1-9.

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