V-CUT fool-proof structure of circuit board
By designing a combination structure of test networks and pads on the circuit board, the problem that the existing V-CUT mistaken-proof structure cannot be adapted to small reserved connection positions is solved, realizing the adaptation to different circuit boards and accurate V-CUT process inspection, thus improving the mistaken-proof effect.
Patent Information
- Application Number
- CN202423095496.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-13
AI Technical Summary
The existing V-CUT foolproof structure has its sharp corners located at the bottom, resulting in an excessively wide width that cannot be adapted to circuit boards with reserved connection positions less than 4mm. This leads to a missing V-CUT and prevents normal use on the client side.
Design a V-CUT error prevention structure for circuit boards, which adopts a combination of test network and pads. The test network includes test segments and parallel connection segments. The connection segments are connected to the pads. When the test segment is cut off, the continuity of the pads is detected to realize V-CUT process inspection.
It enables adaptation to circuit boards with different reserved connection positions, accurately determines the V-CUT process status by detecting the continuity of the solder pads, prevents missed V-CUTs, has a wide range of applications, and provides reliable testing results.
Smart Images
Figure CN223567842U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of V-CUT error prevention structure, specifically to a V-CUT error prevention structure for circuit boards. Background Technology
[0002] To prevent customers from missing V-cuts on their circuit boards, which could prevent separation after components are mounted in a continuous assembly, a V-cut test and error-proofing structure is typically added at the connection points designed by the customer. Figure 4 As shown, the existing V-CUT test error prevention structure is usually a V-shaped copper wire network. When forming a V-CUT, the bottom connection of the V-shaped copper wire network is cut off. The test data consists of two networks. During the test, if it passes directly, it means that the V-CUT process has been completed. If it short-circuits, it means that the forming process has missed the V-CUT process. At this time, it needs to be reworked and re-V-CUTed. However, the existing V-shaped V-CUT error prevention structure 5 has its sharp corner at the bottom, the width of the top opening side is 4mm, and the width of the waist of the structure is 2.5mm. Therefore, when the customer reserves a connection position of less than 4mm, the excessively wide waist of the existing V-shaped test error prevention structure 5 cannot be adapted to this circuit board, resulting in circuit boards with missed V-CUTs flowing to the customer. Utility Model Content
[0003] The purpose of this utility model is to provide a V-CUT error-proof structure for circuit boards to solve the above-mentioned technical problems in the prior art; the preferred technical solution among the many technical solutions provided by this utility model can produce many technical effects, as detailed below.
[0004] To achieve the above objectives, the present invention provides the following technical solution:
[0005] This utility model provides a V-CUT error prevention structure for circuit boards, including a test network and two pads disposed on the circuit board body, wherein: the test network is disposed between the two pads; the test network includes a test segment disposed along the V-CUT path and two connecting segments respectively connecting the two ends of the test segment, the two connecting segments are disposed in parallel, and the two connecting segments are respectively connected to the two pads.
[0006] Preferably, the test segment is perpendicular to the connecting segment; the two connecting segments and the test segment form a U-shape.
[0007] Preferably, the end of the connecting segment away from the test segment extends vertically outward to form an extension segment, which is connected to the corresponding pad.
[0008] Preferably, the spacing between the two connecting segments is set to 2 to 5 mm.
[0009] Preferably, the width of the test segment is smaller than the width of the connection segment.
[0010] Preferably, the width of the test segment is set to 5 to 12 mil.
[0011] Preferably, the test segment is located on the V-CUT path and offset towards the inside of the circuit board body.
[0012] Preferably, the offset distance of the test segment is 0.6 to 1.5 mil.
[0013] Preferably, the test network is configured as copper wire.
[0014] Preferably, the pad is a copper sheet; the pad is circular.
[0015] The V-CUT error-proof structure for circuit boards provided by this utility model has at least the following beneficial effects:
[0016] The circuit board V-CUT foolproof structure includes a test network and two pads on the circuit board. The test network and pads work together for V-CUT process testing.
[0017] The test network is set between the two pads. The test network includes a test segment set along the V-CUT path and two connecting segments respectively connected to the two ends of the test segment. The two connecting segments are set in parallel and are respectively connected to the two pads. When the circuit board is V-CUTed, the test segment is cut off, and the two parallel connecting segments have a small waistline spacing. The spacing is determined according to the actual circuit board reserved connection position and is adapted to circuit boards with smaller reserved positions. During testing, the V-CUT process is detected by detecting the continuity of the two pads. If the line is conductive, it means that the V-CUT process has been completed. If it is not conductive, it means that the V-CUT process has not been completed.
[0018] This invention utilizes a test network with connecting sections and test sections, along with pads, to effectively complete V-CUT process testing. It offers excellent error prevention. By arranging the two connecting sections in parallel, it achieves a smaller waistline spacing, making it suitable for circuit boards with limited reserved connection positions and applicable to a wide range of applications. Attached Figure Description
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 and Figure 2 This is a schematic diagram of the structure of this utility model;
[0021] Figure 3 This is a dimensional schematic diagram of the present invention;
[0022] Figure 4 This is a structural diagram of existing technology;
[0023] Figure Labels
[0024] 1. Circuit board body; 2. Test network; 21. Test section; 22. Connection section; 23. Extension section; 3. Pad; 4. V-CUT path; 5. V-shaped V-CUT foolproof structure. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0026] Example 1:
[0027] This utility model provides a foolproof V-CUT structure for circuit boards, as shown in the reference. Figures 1 to 3 As shown, the circuit board V-CUT foolproof structure includes a circuit board body 1, on which a test network 2 and two pads 3 are provided.
[0028] Test network 2 is set between two pads 3; test network 2 includes test segment 21 and connection segment 22. Test segment 21 is set along V-CUT path 4. The number of connection segments 22 is set to two. The two connection segments 22 are connected and set at both ends of test segment 21. The two connection segments 22 are set in parallel and are respectively connected to the two pads 3.
[0029] During the production of printed circuit boards, if the circuit board undergoes the V-CUT process, the test section 21 will be cut off. If the circuit board is missed and does not undergo the V-CUT process, the two pads 3 will be connected through the test network 2.
[0030] Thus, by detecting the continuity of the two pads 3, V-CUT process detection can be achieved. If the line is continuous, it means that the V-CUT process has been completed. If the line is disconnected, it means that V-CUT was missed and the V-CUT process needs to be reworked.
[0031] In practical applications, since the two connecting segments 22 are parallel to each other, their spacing is determined according to the size of the reserved connection position on the actual circuit board. Therefore, the waistline of the test network 2 is adapted to the actual reserved connection position. If the reserved connection position is small, the waistline is small; if the reserved connection position is large, the waistline is large. While ensuring the foolproof effect, it is suitable for circuit boards with smaller reserved connection positions and has a wide range of applications.
[0032] Example 2:
[0033] Example 2 is based on Example 1:
[0034] like Figures 1 to 3 As shown, test segment 21 is perpendicular to connection segment 22.
[0035] Thus, the two connection segments 22 and the test segment 21 form a U-shape, and the circuit board V-CUT foolproof structure is a U-shaped foolproof structure.
[0036] As an optional implementation, the end of the connecting segment 22 away from the test segment 21 extends vertically outward to form an extension segment 23. The extension segment 23 is connected to the corresponding pad 3. The test segment 21, the connecting segment 22 and the extension segment 23 are integrally arranged, and the two sets of connecting segments 22 and extension segments 23 are symmetrically arranged relative to the test segment 21.
[0037] As an optional implementation, the spacing between the two connecting segments 22 is set to 2 to 5 mm, which is suitable for circuit boards with a reserved connection spacing of less than 4 mm.
[0038] The depth of the reserved connection position is 1.5 to 10 mm. The length of the connecting section 22 is adapted to the depth of the reserved connection position. When applying, it should be set according to the actual situation.
[0039] Compared with the existing V-shaped anti-foolproof structure, the U-shaped anti-foolproof structure of this utility model is more flexible in application and has a wider range of applications.
[0040] As an optional implementation, the width of the test segment 21 is smaller than the width of the connection segment 22.
[0041] The narrower test section 21 is easier to cut during the V-CUT process, resulting in a significant error-proof effect.
[0042] As an optional implementation, the width of test segment 21 is set to 5 to 12 mil.
[0043] The aforementioned U-shaped foolproof structure facilitates the placement of needles on the fixture during production line testing.
[0044] As an optional implementation, test segment 21 is set on the V-CUT path and offset towards the inside of the circuit board body 1.
[0045] The offset distance of test segment 21 is 0.6 to 1.5 mil.
[0046] This effectively prevents the V-CUT path from shifting due to the expansion and contraction of the circuit board during the V-CUT process, thus avoiding the problem of being unable to cut the circuit and ensuring the test results.
[0047] As an optional implementation, the test network 2 is set as a copper wire, the pad 3 is set as a copper sheet, and the pad 3 is set as a circle.
[0048] Made of copper, it has excellent electrical conductivity, which effectively ensures the accuracy of test results.
[0049] This utility model is compatible with the reserved connection positions of all customers' different designs, truly achieving the effect of V-CUT error prevention, and is suitable for widespread use.
[0050] In the description of this application, it should be understood that the terms "upper", "lower", "inner", "outer", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.
[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" or "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0052] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0053] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A V-CUT error-proof structure for circuit boards, characterized in that, This includes a test network and two pads mounted on the circuit board body, wherein: The test network is positioned between the two pads; The test network includes a test segment arranged along the V-CUT path and two connection segments connecting the two ends of the test segment respectively. The two connection segments are arranged in parallel and are respectively connected to the two pads.
2. The circuit board V-CUT error-proof structure according to claim 1, characterized in that, The test segment is perpendicular to the connection segment; The two connecting segments and the test segment form a U-shape.
3. The circuit board V-CUT error-proof structure according to claim 2, characterized in that, The end of the connection segment away from the test segment extends vertically outward to form an extension segment, which is connected to the corresponding pad.
4. The circuit board V-CUT error-proof structure according to claim 1, characterized in that, The spacing between the two connecting segments is set to 2-5 mm.
5. The circuit board V-CUT error-proof structure according to claim 1, characterized in that, The width of the test segment is smaller than the width of the connection segment.
6. The circuit board V-CUT error-proof structure according to claim 4, characterized in that, The width of the test segment is set to 5–12 mil.
7. The circuit board V-CUT error-proof structure according to claim 1, characterized in that, The test segment is located on the V-CUT path and offset towards the inside of the circuit board body.
8. The circuit board V-CUT error-proof structure according to claim 7, characterized in that, The offset distance of the test segment is 0.6 to 1.5 mil.
9. The circuit board V-CUT error-proof structure according to claim 1, characterized in that, The test network was configured with copper wires.
10. The circuit board V-CUT error-proof structure according to claim 1, characterized in that, The pads are made of copper sheets; The pads are circular.