Printed circuit board

Abstract

The utility model discloses a printed circuit board, including substrate, be provided with screw mounting hole on the substrate, be provided with copper ring widening area around screw mounting hole, fill resin in copper ring widening area, still be provided with metallized hole in the middle position of substrate, be provided with the area of accompanying plating around metallized hole, design copper ring widening area and fill resin around screw mounting hole, it is favorable to prevent hole wall tear, and it is favorable to ensure that metallized hole and wire are conducted around the setting area of accompanying plating of metallized hole, and the effect of mechanical reinforcement is played simultaneously, and the failure under the mechanical stress is reduced.

Description

Technical Field

[0001] This utility model relates to the field of printed circuit board (PCB) structural design technology, and in particular to a printed circuit board. Background Technology

[0002] A printed circuit board (PCB) is an electronic component that uses electronic printing technology to fix conductive circuit patterns onto an insulating substrate. It is used for mechanical support and electrical connection of electronic components (such as chips, resistors, capacitors, etc.) and is the core carrier of modern electronic devices.

[0003] Traditional PCB hole and slot designs are prone to the following failure modes under mechanical stress: hole wall copper layer tearing: various holes may experience copper layer peeling due to insufficient Annular Ring or poor copper foil adhesion under mechanical assembly or vibration environment, resulting in electrical open circuit or impedance change; pad detachment: mechanical vibration or thermal stress may cause the pad to separate from the substrate, leading to soldering failure and other problems. Utility Model Content

[0004] The purpose of this invention is to solve the problems of the prior art and provide a printed circuit board.

[0005] The objective of this utility model is achieved through the following technical solution: a printed circuit board, including a substrate; the substrate is provided with screw mounting holes; a copper ring widening area is provided around the screw mounting holes; the copper ring widening area is filled with resin; a metallized hole is also provided in the middle of the substrate; a plating area is provided around the metallized hole; designing a copper ring widening area around the screw mounting holes and filling them with resin helps to prevent tearing of the hole walls; providing a plating area around the metallized holes helps to ensure the continuity between the metallized holes and the wires, while also playing a role in mechanical reinforcement and reducing failures caused by mechanical stress;

[0006] The copper ring widening area includes multiple concentric copper rings, and the thickness of the copper rings gradually decreases from the inside to the outside; the use of multiple concentric rings stacked together, with different thicknesses, is beneficial for stress dispersion.

[0007] The substrate is provided with an elongated groove; the top corners at both ends of the elongated groove are provided with arc-shaped chamfers;

[0008] The substrate is also provided with heat dissipation through holes;

[0009] The substrate has an arc-shaped welding end on its side edge;

[0010] A further technical solution is to provide conductive through holes on the arc-shaped welding end; by opening conductive through holes on the arc-shaped welding end, the top, bottom and middle of the arc-shaped welding end are directly electrically connected, so that even if the welding end is detached or mechanically damaged, the electrical connection of the top, middle and bottom of the welding end will not be affected.

[0011] This utility model has the following advantages:

[0012] 1. A widened annular copper ring is designed around the screw mounting hole to prevent tearing of the hole wall. A plating zone is set around the metallized hole to ensure the continuity between the metallized hole and the wire, and at the same time, it plays a role in mechanical reinforcement, reducing failure caused by mechanical stress. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 This is a top view of the present invention.

[0015] In the figure: 1. Substrate; 2. Screw mounting hole; 3. Copper ring widening area; 4. Metallized hole; 5. Plating area; 6. Long groove; 7. Heat dissipation through hole; 8. Arc-shaped welding end; 9. Conductive through hole; 10. Arc-shaped chamfer. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0017] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0019] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0020] 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., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection 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.

[0022] Example 1: As Figure 1 and 2 As shown, a printed circuit board includes a substrate 1; the substrate 1 has screw mounting holes 2; a copper ring widening area 3 is provided around the screw mounting holes 2; the copper ring widening area 3 is filled with resin; a metallized hole 4 is also provided in the middle of the substrate 1; a plating area 5 is provided around the metallized hole 4; the design of the copper ring widening area 3 around the screw mounting holes 2 and the filling with resin helps to prevent tearing of the hole wall, and the plating area 5 around the metallized hole 4 helps to ensure that the metallized hole 4 is conductive to the wire, and at the same time plays a role in mechanical reinforcement, reducing failure due to mechanical stress;

[0023] The copper ring widening region 3 includes multiple concentric copper rings, and the thickness of the copper rings gradually decreases from the inside to the outside; the use of multiple concentric rings stacked together, with different thicknesses, is beneficial for dispersing stress.

[0024] The substrate 1 is provided with an elongated groove 6; the top corners at both ends of the elongated groove 6 are provided with arc-shaped chamfers 10;

[0025] The substrate 1 is also provided with heat dissipation holes 7;

[0026] The substrate 1 has an arc-shaped welding end 8 on its side edge;

[0027] A further technical solution is that a conductive through hole 9 is provided on the arc-shaped welding end 8; the conductive through hole 9 is opened on the arc-shaped welding end 8 and is directly electrically connected to the top, bottom and middle of the arc-shaped welding end 8, so that even if the welding end is detached or mechanically damaged, the electrical connection of the top, middle and bottom of the welding end will not be affected.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A printed circuit board, characterized in that: The substrate includes a substrate; the substrate has screw mounting holes; a copper ring widening area is provided around the screw mounting holes; the copper ring widening area is filled with resin; a metallized hole is also provided in the middle of the substrate; a plating area is provided around the metallized hole.

2. The printed circuit board according to claim 1, characterized in that: The widened copper ring area comprises multiple concentric copper rings, and the thickness of the copper rings gradually decreases from the inside to the outside.

3. The printed circuit board according to claim 1, characterized in that: The substrate is provided with a long groove; the top corners at both ends of the long groove are provided with arc-shaped chamfers.

4. The printed circuit board according to claim 1, characterized in that: The substrate is also provided with heat dissipation holes.

5. The printed circuit board according to claim 1, characterized in that: The substrate has an arc-shaped welding end on its side edge.

6. The printed circuit board according to claim 5, characterized in that: The arc-shaped welding end is provided with a conductive through hole.

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