Printed circuit board (PCB) jointed board

Abstract

The utility model relates to a PCB jointed board which comprises a plurality of PCB unit boards, two adjacent PCB unit boards are a first unit board and a second unit board respectively, and two connecting ribs are arranged between the opposite side edges of the first unit board and the second unit board; the opposite side edges of the first unit plate and the second unit plate are respectively a first side edge and a second side edge, and one part of the first side edge and one part of the second side edge are special-shaped connecting areas which correspond to each other in position and have different extension trends; and one of the two connecting ribs is arranged between the special-shaped connecting areas of the first side edge and the second side edge. According to the PCB jointed board, the plurality of PCB unit boards with different characteristics are spliced together by using the connecting ribs with different shapes and sizes, and the traditional connecting ribs and the improved connecting ribs are combined, so that flexible splicing can be realized, various small or special-shaped requirements are met, and the integration level and the reliability are improved.

Description

Technical Field

[0001] The present application relates to the technical field of circuit board production, and in particular to a PCB panel assembly. Background Art

[0002] PCB panelization technology refers to the technology of combining multiple PCB unit boards into a larger PCB board through panelization, and then manufacturing and processing them uniformly. During the panelization process, the PCB unit boards are fixed by connecting ribs and VCUT connections to ensure that there is no relative displacement during the manufacturing and processing process. After the manufacturing and processing are completed, the PCB unit board is separated from the PCB panel to form an independent finished product.

[0003] Special-shaped PCB boards (referring to PCB unit boards with irregular or non-standard shapes) in the prior art are quite difficult to manufacture. For example, the design of special-shaped PCB boards is often more complicated than that of standard-shaped PCB boards. The irregular shape may make it difficult to find a suitable combination when assembling the boards, and it may even be impossible to assemble the boards effectively. Utility Model Content

[0004] The present application provides a PCB panel that can combine the shape characteristics of special-shaped PCB unit boards to effectively enhance the overall mechanical strength and space utilization.

[0005] The present application discloses a PCB panel assembly, comprising a plurality of PCB unit boards, wherein two adjacent PCB unit boards are respectively a first unit board and a second unit board, and two connecting ribs are arranged between the mutually facing sides of the first unit board and the second unit board;

[0006] The sides of the first unit plate and the second unit plate facing each other are respectively the first side and the second side, and a portion of the first side and the second side are special-shaped connection areas corresponding in position and having different extension trends;

[0007] One of the two connecting ribs is arranged between the special-shaped connecting areas of the first side edge and the second side edge.

[0008] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution, but are merely further supplements or preferences. Under the premise that there are no technical or logical contradictions, each optional method can be combined with the above-mentioned overall solution separately, and multiple optional methods can also be combined.

[0009] In one embodiment, the first side and the second side have two special-shaped connection areas respectively, and the two connection ribs are respectively arranged in the corresponding special-shaped connection areas.

[0010] In one embodiment, a portion of the first side and a portion of the second side are straight connecting areas that correspond in position and have the same extension trend; the other of the two connecting ribs is arranged between the straight connecting areas of the first side and the second side.

[0011] In one embodiment, the straight connection areas of the first side and the second side are both extended in a straight line and are parallel to each other.

[0012] In one embodiment, the special-shaped connection area of ​​one of the first side and the second side is a straight line, and the special-shaped connection area of ​​the other side has a turning point or is a curve.

[0013] In one embodiment, the special-shaped connection areas of the first side edge and the second side edge extend in a straight line and are arranged obliquely.

[0014] In one embodiment, the special-shaped connection areas of the first side and the second side both have turning parts, or are curves.

[0015] In one embodiment, the same connecting rib has two opposite first edges and is connected to the PCB unit board on the corresponding side. The same connecting rib also has two second edges connected between the two first edges and arranged oppositely; the middle parts of the two second edges tend to approach each other.

[0016] In one of the embodiments, the multiple PCB unit boards are arranged in a matrix, and two connecting ribs are provided between two adjacent PCB unit boards in the same row and between two adjacent PCB unit boards in the same column.

[0017] In one of the embodiments, a process edge is provided around the periphery of all PCB unit boards, and at least two connecting ribs are provided between the process edge and adjacent PCB unit boards.

[0018] The PCB panel of the present application utilizes connecting ribs of different shapes and sizes to splice multiple PCB unit boards together, combining traditional connecting ribs and improved connecting ribs, and can flexibly realize splicing of different shapes and sizes to meet various small or special-shaped needs and improve integration and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are 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 creative work.

[0020] Figure 1 It is a schematic diagram of the structure of a V-cut panel in the prior art;

[0021] Figure 2 for Figure 1 Schematic diagram of the structure of adjacent parts of the PCB unit board;

[0022] Figure 3 It is a structural schematic diagram of a stamp hole puzzle board in the prior art;

[0023] Figure 4 for Figure 3 A magnified view of part A;

[0024] Figure 5 It is a structural schematic diagram of a connecting rib panel in the prior art;

[0025] Figure 6 for Figure 5 A magnified view of part B in FIG.

[0026] Figure 7 This is a schematic diagram of the structure of a PCB panel in one embodiment of the present application;

[0027] Figure 8 for Figure 7 The enlarged view of the C part in the figure;

[0028] Figures 9 to 14 Schematic diagram of the structure of the connecting ribs in different embodiments of the present application.

[0029] The reference numerals of the components are as follows:

[0030] 100, process edge;

[0031] 200, PCB unit board; 210, notch; 220, connecting rib; 230, small hole; 240, gong groove;

[0032] 300, first unit plate; 310, special-shaped connection area; 320, straight connection area;

[0033] 400, second unit plate; 400a, second unit plate; 400b, second unit plate; 410, special-shaped connection area; 420, straight connection area;

[0034] 500, connecting ribs; 500a, connecting ribs; 500b, connecting ribs; 500c, connecting ribs; 500d, connecting ribs; 500e, connecting ribs; 500f, connecting ribs; 500g, connecting ribs;

[0035] 510, first edge; 510a, first edge; 510b, first edge; 520, second edge; 520a, second edge; 520b, second edge. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0037] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0039] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level (or in a state of use, or from a certain perspective of the drawing) than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level (or in a state of use, or from a certain perspective of the drawing) than the second feature.

[0040] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0041] In the prior art, the processing of special-shaped PCBs is more complicated than that of standard-shaped PCBs. Due to the irregular shape, cutting, drilling, welding and other processes may face higher technical challenges. According to the conventional panelization method, the utilization rate of processing equipment may be reduced, and the production cost may be increased. In addition, the design of special-shaped PCBs also needs to consider signal integrity, thermal design, mechanical strength and other aspects, which further increases the design difficulty.

[0042] See also Figure 1 , Figure 2 Conventional panelization methods include V-cut panelization, in which the process edge 100 is located at the periphery, multiple PCB unit boards 200 are arranged in an array inside, and V-shaped notches 210 are cut at the connection between adjacent PCB unit boards, so that the PCB unit boards 200 can be connected along the Figure 2 However, the connection points of the special-shaped board are small and the board is easy to break. After the finished product is broken open, there are burrs on the edge of the board, which makes the PCB board space utilization low. Due to the accuracy deviation of the V-cut, the board edge cannot be routed or components cannot be arranged within 1mm, which reduces the utilization rate.

[0043] See also Figure 3 , Figure 4 The stamp hole paneling method is to open a series of small holes 230 on the edge of the PCB unit board 200, and then use the connecting ribs 220 to fix multiple PCB unit boards 200 together. There are gong grooves 240 between adjacent PCB unit boards 200 or between the process edges 100. This method has high mechanical strength and stability and is suitable for occasions where high strength requirements are placed on PCB paneling. However, after the PCB unit board 200 is broken and separated, there will be protrusions similar to gears on the edge of the board, which means there will be appearance defects. Because the small holes 230 are arranged on the flat edge of the PCB unit board 200, and there are few connection points for the special-shaped small board, it may lead to insufficient support force and fail to meet the stress requirements of the entire board.

[0044] See also Figure 5 , Figure 6, the connection position panel is similar to the stamp hole panel, but the connection between adjacent PCB unit boards does not have small holes, and multiple PCB unit boards 200 are connected together only by connecting ribs 220. However, the connecting ribs 220 generally only bridge the flat edges of the two PCB unit boards, and the special-shaped small boards have few connection points and cannot meet the stress requirements of the entire board. Taking the existing special-shaped small boards as an example, the size of the PCB unit board 200 is 17.78mmx20.32mm, in order to meet the SMT processing size (the panel size cannot be less than 55mm×55mm) and improve the efficiency of panel separation. A 6x6 rectangular array is formed by multiple identical PCB unit boards 200. A 2.0mm gong groove 240 is reserved between the PCB unit boards 200 (the gong groove is a specific groove or hole formed by milling a milling machine) and connected with connecting ribs 220 (connecting ribs are also called support ribs, which are used to connect PCB unit boards to form a stable structural frame). Conventional connecting ribs 220 are connected to the flat area of ​​the board edge (if the board edge is flat, the contact surface between the connecting ribs 220 and the PCB unit board 200 is large and the supporting force is strong. On the contrary, if the connecting ribs 220 are in an uneven area, the contact surface between the connecting ribs 220 and the edge of the PCB unit board 200 is too small and is easily broken under stress). The flat areas on both sides of each PCB unit board 200 have 0.8mmx2.0mm connecting ribs, plus a 3mm wide process edge 100 to form a 126.99mm×142.24mm PCB panel.

[0045] The existing special-shaped small board has many curved contours, including arcs, grooves and corners. The conventional connecting ribs are straight lines composed of two arc-shaped milling positions and two straight line connecting positions. The cross-sectional shape and structure of the conventional connecting ribs are relatively simple, which cannot meet the connection requirements of curved or folded lines, and the distribution is too small. As a result, the main defect of the special-shaped small board of the existing solution is insufficient supporting force, making it difficult to ensure the strength and structural stability of the PCB panel.

[0046] In response to the above problems, an embodiment of the present application provides a PCB panelization method, which is improved on the basis of the connection position panelization method to solve problems such as insufficient supporting force, and is more advantageous for special-shaped small boards.

[0047] See also Figure 7 , Figure 8 The PCB panel of this embodiment includes a plurality of PCB unit boards, wherein two adjacent PCB unit boards are a first unit board 300 and a second unit board 400, and two connecting ribs 500 are provided between the sides of the first unit board 300 and the second unit board 400 facing each other.

[0048] In the figure, the first unit plate 300 and its adjacent second unit plate 400a are taken as examples, and the sides facing each other are respectively the first side on the right side of the first unit plate 300 and the second side on the left side of the second unit plate 400a, one part of the first side is the special-shaped connection area 310, one part of the second side is the special-shaped connection area 410, the special-shaped connection area 310 and the special-shaped connection area 410 are positioned relative to each other and have different extension trends, and the connecting rib 500a of the two connecting ribs is connected between the special-shaped connection area 310 and the special-shaped connection area 410.

[0049] Part of the first side and the second side is a straight connection area 320 and a straight connection area 420 which are located correspondingly and have the same extension trend, and a connection rib 500 b of the two connection ribs is connected between the straight connection area 320 and the straight connection area 420 .

[0050] In this embodiment, the conventional connecting ribs 500b and the improved connecting ribs 500a are combined to form panels, so that the connecting ribs are in full contact with the edge of the PCB unit board, increasing the contact area and supporting force between the connecting ribs and the PCB unit board. The connecting ribs play the role of bridges and ties in the special-shaped PCB unit board, and can effectively connect various parts, so that the overall supporting strength of the PCB panel is significantly improved. This method can also effectively reduce stress concentration, thereby improving strength and stability. Through reasonable optimization, it can also reduce process margins and reduce costs.

[0051] The straight connection area 320 and the straight connection area 420 are both extended in straight lines and are parallel to each other, while the special-shaped connection area 310 and the special-shaped connection area 410 are both smooth curves (such as arcs, parabolas, etc., which are relatively smooth, or extension trends with smaller turns). Of course, one of them may also be a broken line, that is, with an obvious turning point.

[0052] The figure takes the first unit board 300 and the adjacent second unit board 400b as an example, the sides facing each other are the first side of the top side of the first unit board 300 and the second side of the bottom side of the second unit board 400b, the first side and the second side are distributed with two corresponding special-shaped connection areas, and are respectively connected by the connection ribs 500c and 500d in the two connection ribs, and it can be seen in the figure that the special-shaped connection area of ​​the first side is a curve, while the special-shaped connection area of ​​the second side is a straight extension. In other embodiments, the special-shaped connection areas that may be arranged relatively are all straight extensions and inclined.

[0053] The multiple PCB unit boards in this embodiment are arranged in a matrix, and two connecting ribs 500 are provided between two adjacent PCB unit boards in the same row and between two adjacent PCB unit boards in the same column. A process edge 100 is also provided around the periphery of all PCB unit boards, and at least two connecting ribs 500 are provided between the process edge 100 and the adjacent PCB unit boards, for example, connecting ribs 500e and 500f are provided between the left side of the first unit board 300 and the process edge 100, and connecting ribs 500g and 500h are provided between the bottom side of the first unit board 300 and the process edge 100.

[0054] Improved connection ribs can be flexibly connected at the edge of special-shaped PCB unit boards, effectively avoiding components and wiring-intensive areas in the board, reducing the risk of collision and cutting of wiring due to precision problems during board separation. It reduces deformation or distortion under heat and force conditions, and improves the stability, mechanical strength, space utilization, electrical performance, etc. of the entire board.

[0055] The same connecting rib 500 has two opposite first edges 510 and is connected to the PCB unit board 200 on the corresponding side. The same connecting rib also has two second edges 520 connected between the two first edges 510 and arranged oppositely, wherein the middle parts of the two second edges 520 tend to approach each other, and the two second edges 520 can be processed by milling.

[0056] See also Fig. 9 In the conventional connecting rib 500, the two first edges 510 extend in straight lines and are parallel to each other.

[0057] See also Fig.10 In another embodiment, the first edge 510a is curved, and the curved portion is an arc, for example, and its corresponding central angle can be any angle greater than 45 degrees. The first edge 510b extends in a straight line, and the middle parts of the second edge 520a and the second edge 520b tend to approach each other.

[0058] See also Fig.11 In another embodiment, the first edge 510a and the first edge 510b are both curved in shape and have a tendency to approach each other in the middle.

[0059] See also Fig.12 In another embodiment, the first edge 510a is extended as a fold line, and the first edge 510b is extended as a straight line. The fold line angle can be any angle greater than 45 degrees.

[0060] See also Fig.13 In another embodiment, the first edge 510a and the first edge 510b are both extended as fold lines, and the fold line angle can be any angle greater than 45 degrees.

[0061] See also Fig.14In another embodiment, the first edge 510a is extended in a straight line, and the first edge 510b is an arc.

[0062] The PCB panel of the present application improves the connection ribs so that the improved connection ribs are distributed at the bending or folding parts of the PCB unit board for reinforcement. The contact position of the connection ribs follows the change of the edge of the PCB unit board, increasing the contact surface and enhancing the connection strength and stability. The use of this combination of connection ribs makes the space more flexible and improves the space utilization rate of the PCB panel.

[0063] The connecting ribs of the present application can be flexibly distributed around the special-shaped PCB unit board to avoid conflicts with structural components, simplify the manufacturing process, and reduce production costs and difficulties. By optimizing the structural design of the connecting ribs, the amount of board material used can also be reduced, further reducing costs.

[0064] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. When the technical features in different embodiments are embodied in the same figure, it can be regarded that the figure also discloses the combination examples of the various embodiments involved.

[0065] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A PCB panel, characterized in that: It comprises a plurality of PCB unit boards (200), wherein two adjacent PCB unit boards are respectively a first unit board (300) and a second unit board (400), and two connecting ribs (500) are provided between the mutually facing sides of the first unit board (300) and the second unit board (400); The sides of the first unit plate (300) and the second unit plate (400) facing each other are respectively a first side and a second side, and a portion of the first side and the second side are special-shaped connection areas (310, 410) corresponding in position and having different extension trends; One of the two connecting ribs (500) is arranged between the special-shaped connecting areas (310, 410) of the first side edge and the second side edge.

2. The PCB panel according to claim 1, characterized in that: The first side edge and the second side edge respectively have two special-shaped connection areas, and the two connection ribs (500) are respectively arranged in the corresponding special-shaped connection areas.

3. The PCB panel according to claim 1, characterized in that: Part of the first side and part of the second side are straight connection areas (320, 420) corresponding in position and having the same extension trend; the other of the two connection ribs is arranged between the straight connection areas (320, 420) of the first side and the second side.

4. The PCB panel according to claim 3, characterized in that: The straight connection areas of the first side edge and the second side edge both extend in a straight line and are parallel to each other.

5. The PCB panel according to claim 1, characterized in that: The special-shaped connection area of ​​one of the first side and the second side is extended in a straight line, and the special-shaped connection area of ​​the other side has a turning part or is a curve.

6. The PCB panel according to claim 1, characterized in that: The special-shaped connection areas of the first side edge and the second side edge extend in a straight line and are arranged obliquely.

7. The PCB panel according to claim 1, characterized in that: The special-shaped connection areas of the first side and the second side both have turning parts, or are both curves.

8. The PCB panel according to claim 1, characterized in that: The same connecting rib has two opposite first edges (510) and is connected to the PCB unit board (200) on the corresponding side. The same connecting rib also has two second edges (520) connected between the two first edges (510) and arranged opposite to each other; the middle parts of the two second edges (520) tend to approach each other.

9. The PCB panel according to claim 1, characterized in that: The multiple PCB unit boards (200) are arranged in a matrix, and two connecting ribs (500) are provided between two adjacent PCB unit boards in the same row and between two adjacent PCB unit boards in the same column.

10. The PCB panel according to claim 1, characterized in that: A process edge (100) is also provided around the periphery of all PCB unit boards, and at least two connection ribs (500) are provided between the process edge (100) and an adjacent PCB unit board (200).

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