PCB jointed board connecting structure

Abstract

The utility model discloses a PCB jointed board connecting structure, which is characterized in that a first stamp hole group is arranged close to the appearance line of a PCB unit board, and each first stamp hole is tangent to the appearance line, so that the first stamp hole group is easy to break along the arrangement direction of the first stamp hole from a preset breaking track close to the appearance line during board splitting; the rigidity of the connecting part in the plate splitting direction is reduced, so that the fracture is easy to carry out along a preset path, and meanwhile, as the first stamp hole is tangent to the appearance line, the fracture path can be effectively controlled, and the generation of burrs is reduced; and the second stamp hole group is arranged far away from the appearance line and is arranged in a linear manner, so that the toughness of the connecting part is improved, the stress during board splitting is dispersed, the problem of uneven fracture or more burrs caused by stress concentration is reduced, uneven fracture caused by stress concentration is reduced, and the board splitting quality is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, and more specifically, to a PCB panel connection structure. Background Art

[0002] PCB panelization is the process of joining together multiple individually manufactured small printed circuit boards (PCBs) to form a larger, integrated circuit board. This process is used in the production of many electronic devices to improve production efficiency and reduce costs. Panelization is a necessary and critical step in PCB design, manufacturing, and assembly, significantly reducing PCB assembly processing time and improving overall product yield, among other important aspects.

[0003] Typically, circuit board depaneling utilizes a V-cut scoring machine or routing machine. Another common method employed is a stamp hole design. Stamp holes are small holes created in the ribs connecting the sub-boards to facilitate cutting. Resembling the circular holes found in postage stamps, stamp holes offer advantages such as strong connection strength and the elimination of the need for router cutting. When a printed circuit board is depaneled using a stamp hole design, it can be broken directly during depaneling.

[0004] However, when the existing PCB panel structure uses a stamp hole design solution to separate the panels, large burrs are easily generated at the connection parts. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a PCB panel connection structure to solve the problem that large burrs are easily generated at the connection parts of the existing PCB panel structure after the panels are separated.

[0006] The technical solution of the present utility model is described as follows: A PCB panel connection structure includes a PCB unit board, wherein a plurality of the PCB unit boards are provided, and the plurality of the PCB unit boards are arranged in an array, and a connecting portion is provided between two adjacent PCB unit boards, and a first stamp hole group and a second stamp hole group are provided on the connecting portion, the first stamp hole group includes a plurality of first stamp holes, and the plurality of first stamp holes are arranged in a straight line and are arranged close to the outer shape line of the PCB unit board, and each of the first stamp holes is tangent to the outer shape line of the PCB unit board, and the second stamp hole group includes a plurality of second stamp holes, and the plurality of second stamp holes are arranged in a straight line and are arranged away from the outer shape line of the PCB unit board.

[0007] Furthermore, the plurality of first stamp holes are arranged at equal intervals along the X-axis direction.

[0008] Furthermore, the plurality of second stamp holes are arranged at equal intervals along the X-axis direction.

[0009] Furthermore, in the Y-axis direction, the plurality of first stamp holes and the plurality of second stamp holes are staggered with each other.

[0010] Furthermore, the distance between the centers of two adjacent first stamp holes is equal to the distance between the centers of two adjacent second stamp holes.

[0011] Furthermore, the center distance between two adjacent first stamp holes is 0.6 mm.

[0012] Furthermore, the center distance between two adjacent second stamp holes is 0.6 mm.

[0013] Furthermore, the width of the connecting portion is 2 mm, the first stamp hole group is provided in two rows, and the distance between the two rows of the first stamp hole group is 1.7 mm, the second stamp hole group is provided in two rows, and the distance between the two rows of the second stamp hole group is 0.93 mm.

[0014] Furthermore, the aperture of the first stamp hole is equal to the aperture of the second stamp hole.

[0015] The utility model according to the above solution has the following beneficial effects:

[0016] (1) The utility model provides a PCB panel connection structure, in which the first stamp hole group is arranged close to the outer line of the PCB unit board, and each first stamp hole is tangent to the outer line, so that when the board is separated, the fracture is easy to start from the predetermined fracture trajectory close to the outer line and fracture along the arrangement direction of the first stamp holes. Secondly, this design reduces the stiffness of the connection part in the direction of the board separation, so that the fracture is easy to proceed along the predetermined path. At the same time, since the first stamp hole is tangent to the outer line, the fracture path can be effectively controlled and the generation of burrs can be reduced; the second stamp hole group is arranged away from the outer line and is arranged in a straight line. This design increases the toughness of the connection part, helps to disperse the stress during board separation, reduces the problem of uneven fracture or the occurrence of more burrs due to stress concentration, reduces the uneven fracture caused by stress concentration, and further improves the quality of board separation.

[0017] (2) The utility model provides a PCB panel connection structure, in which the first stamp hole group is arranged close to the outer shape line of the PCB unit board, and each first stamp hole is tangent to the outer shape line. With this design, even if a small amount of burrs are generated during the panel separation process, since the first stamp hole group is close to the outer shape line, these burrs are located at the periphery of the PCB unit board body, that is, the outer edge area of ​​the PCB unit board. This makes it easy to contact the burr area when using tools such as files for burr treatment without damaging the main functional area of ​​the PCB unit board, thereby reducing the risk of damage to the PCB unit board due to improper burr treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a structural diagram of a PCB panel connection structure in an embodiment of the present utility model;

[0020] Figure 2 for Figure 1 A local enlarged schematic diagram;

[0021] Figure 3 This is a schematic structural diagram of a PCB unit board in an embodiment of the present utility model;

[0022] Figure 4 for Figure 3 B is a partial enlarged schematic diagram.

[0023] In the figure, 1, PCB unit board; 2, connecting part; 3, first stamp hole group; 31, first stamp hole; 4, second stamp hole group; 41, second stamp hole. DETAILED DESCRIPTION

[0024] The following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention. That is, the present invention is not limited to the described embodiments.

[0025] In order to better understand the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments:

[0026] See also Figure 1As shown, an embodiment of the present invention provides a PCB panel connection structure, including a PCB unit board 1, a plurality of PCB unit boards 1 are provided, and the plurality of PCB unit boards 1 are arranged in an array, a connecting portion 2 is provided between two adjacent PCB unit boards 1, and a first stamp hole group 3 and a second stamp hole group 4 are provided on the connecting portion 2, the first stamp hole group 3 includes a plurality of first stamp holes 31, the plurality of first stamp holes 31 are arranged in a straight line and are arranged close to the outer shape line of the PCB unit board 1, and each first stamp hole 31 is tangent to the outer shape line of the PCB unit board 1, and the second stamp hole group 4 includes a plurality of second stamp holes 41, the plurality of second stamp holes 41 are arranged in a straight line and are arranged away from the outer shape line of the PCB unit board 1.

[0027] When traditional PCB panels are separated, improper design of the connection part 2 often leads to more burrs on the edges of the separated panels, which not only affects the appearance quality of the product, but also affects the electrical performance and reliability of the circuit board.

[0028] The embodiment of the present invention provides a PCB panel connection structure, in which the first stamp hole group 3 is arranged close to the outline of the PCB unit board 1, and each first stamp hole 31 is tangent to the outline, so that when the board is separated, the fracture is likely to start from the predetermined fracture trajectory close to the outline and fracture along the arrangement direction of the first stamp holes 31. Secondly, this design reduces the stiffness of the connection part 2 in the direction of the board separation, so that the fracture is likely to proceed along the predetermined path. At the same time, since the first stamp hole 31 is tangent to the outline, the fracture path can be effectively controlled and the generation of burrs can be reduced; the second stamp hole group 4 is arranged away from the outline and is arranged in a straight line. This design increases the toughness of the connection part 2, helps to disperse the stress during board separation, reduces the problem of uneven fracture or more burrs caused by stress concentration, reduces uneven fracture caused by stress concentration, and further improves the quality of board separation.

[0029] During the depaneling process of traditional PCB panels, stress concentration often occurs at the stamp holes. If the stress is too large or unevenly distributed, it may cause the material around the stamp holes to tear or deform, and then produce burrs. These burrs can easily scratch the main functional areas of the PCB board during the subsequent burr treatment process. During the depaneling process of traditional PCB panels, if there are many burrs, tools such as files are needed to deal with the burrs. After the traditional PCB panels are depaneled, part of the stamp holes are located inside the PCB board. When using tools such as files for burr treatment, if the tools are too rough or too hard, it is easy to leave scratches on the surface of the PCB board. Especially when dealing with burrs near the stamp holes, due to the stress concentration in this area and the relatively fragile material, it is more susceptible to damage, resulting in damage to the PCB board.

[0030] The embodiment of the present invention provides a PCB panel connection structure, in which the first stamp hole group 3 is arranged close to the outline of the PCB unit board 1, and each first stamp hole 31 is tangent to the outline. With this design, even if a small amount of burrs are generated during the panel separation process, since the first stamp hole group 3 is close to the outline, these burrs are located at the periphery of the main body of the PCB unit board 1, that is, the outer edge area of ​​the PCB unit board 1. This makes it easy to contact the burr area when using tools such as files for burr processing without damaging the main functional area of ​​the PCB unit board 1, thereby reducing the risk of damage to the PCB unit board 1 due to improper burr processing.

[0031] Preferably, the plurality of first stamp holes 31 are arranged at equal intervals along the X-axis direction; and the plurality of second stamp holes 41 are arranged at equal intervals along the X-axis direction.

[0032] Preferably, the plurality of first stamp holes 31 and the plurality of second stamp holes 41 are staggered relative to each other in the Y-axis direction. This design can effectively disperse the stress generated by external forces acting on the connecting portion 2, reduce the concentration of stress in a single direction, and thus reduce the risk of material tearing or deformation.

[0033] Preferably, the distance between the centers of two adjacent first stamp holes 31 is equal to the distance between the centers of two adjacent second stamp holes 41 .

[0034] Preferably, the center distance d1 between two adjacent first stamp holes 31 is 0.6 mm.

[0035] Preferably, the center distance d2 between two adjacent second stamp holes 41 is 0.6 mm.

[0036] Preferably, the width W1 of the connecting portion 2 is 2 mm, the first stamp hole group 3 is provided in two rows, and the distance D1 between the two rows of first stamp hole groups 3 is 1.7 mm, the second stamp hole group 4 is provided in two rows, and the distance D2 between the two rows of second stamp hole groups 4 is 0.93 mm.

[0037] Preferably, the aperture of the first stamp hole 31 is equal to the aperture of the second stamp hole 41 .

[0038] It should be noted that the indicated orientation or position relationship is based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the application product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, or the orientation or position relationship in which the application product is usually placed when in use. It is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0039] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this utility model.

[0040] The above is an exemplary description of the present utility model patent in conjunction with the accompanying drawings. It is obvious that the implementation of the present utility model patent is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present utility model patent, or the concept and technical solution of the present utility model patent are directly applied to other occasions without improvement, they are all within the scope of protection of the present utility model.

Claims

1. A PCB panel connection structure, characterized in that: The invention comprises a PCB unit board (1), wherein a plurality of the PCB unit boards (1) are provided, and the plurality of the PCB unit boards (1) are arranged in an array, a connecting portion (2) is provided between two adjacent PCB unit boards (1), and a first stamp hole group (3) and a second stamp hole group (4) are provided on the connecting portion (2), wherein the first stamp hole group (3) comprises a plurality of first stamp holes (31), wherein the plurality of first stamp holes (31) are arranged in a straight line and are arranged close to the outer shape line of the PCB unit board (1), and each of the first stamp holes (31) is tangent to the outer shape line of the PCB unit board (1), and the second stamp hole group (4) comprises a plurality of second stamp holes (41), wherein the plurality of second stamp holes (41) are arranged in a straight line and are arranged away from the outer shape line of the PCB unit board (1).

2. A PCB panel connection structure according to claim 1, characterized in that: The plurality of first stamp holes (31) are arranged at equal intervals along the X-axis direction.

3. A PCB panel connection structure according to claim 2, characterized in that: The plurality of second stamp holes (41) are arranged at equal intervals along the X-axis direction.

4. A PCB panel connection structure according to claim 3, characterized in that: In the Y-axis direction, the plurality of first stamp holes (31) and the plurality of second stamp holes (41) are arranged in a staggered manner.

5. The PCB panel connection structure according to claim 1, wherein: The center distance between two adjacent first stamp holes (31) is equal to the center distance between two adjacent second stamp holes (41).

6. The PCB panel connection structure according to claim 1, wherein: The center distance between two adjacent first stamp holes (31) is 0.6 mm.

7. The PCB panel connection structure according to claim 1, wherein: The center distance between two adjacent second stamp holes (41) is 0.6 mm.

8. The PCB panel connection structure according to claim 1, wherein: The width of the connecting portion (2) is 2 mm, the first stamp hole groups (3) are provided in two rows, and the distance between the two rows of the first stamp hole groups (3) is 1.7 mm, and the second stamp hole groups (4) are provided in two rows, and the distance between the two rows of the second stamp hole groups (4) is 0.93 mm.

9. The PCB panel connection structure according to claim 1, wherein: The aperture of the first stamp hole (31) is equal to the aperture of the second stamp hole (41).

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