Conductive needle for detecting PCB (Printed Circuit Board), detection jig and detection device
By designing a conductive needle with a simplified structure, including a first needle rod and a boss, the problem of high production cost in the prior art is solved, and the effect of reducing manufacturing costs and improving production efficiency is achieved.
Patent Information
- Application Number
- CN202510286175.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2025-06-13
AI Technical Summary
The conductive needles in the prior art have complex structures, resulting in high production costs.
A conductive needle for detecting PCB is designed, and its structure is simplified, including only a first needle rod and a boss, which is fixed to the first needle rod with a diameter greater than the diameter of the first needle rod, and is used to limit the insertion depth of the conductive needle.
By simplifying the structure of the conductive needle, its manufacturing cost is reduced, while improving production efficiency is improved, and effective detection of PCB is achieved.
Smart Images
Figure CN120142714A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of PCB detection, and in particular to a conductive needle, a detection fixture and a detection device for detecting PCB. Background Art
[0002] PCB (Printed Circuit Board), Chinese name is printed circuit board, also known as printed circuit board, is an important electronic component, the support of electronic components, and the carrier of electrical connection of electronic components. In the process of PCB production, several vias need to be opened. After the vias are opened, there may be debris in the holes, so they need to be cut out. After the holes are cut out, it is necessary to detect whether the vias are conductive, and the detection requires the use of PCB detection equipment.
[0003] A PCB inspection jig and device are disclosed in the related technology. In the first aspect, the present application provides a PCB inspection jig, including a needle plate and a base plate, wherein an upper connecting rod is provided on the top surface of the needle plate, the bottom end of the connecting rod is fixed to the needle plate by screws, and the top end of the connecting rod is fixedly connected to a fixing plate by screws; a lower connecting rod is connected to the bottom surface of the base plate, the top end of the lower connecting rod is fixed to the base plate by screws, and the bottom end of the lower connecting rod is fixedly connected to a support frame by screws; a plurality of probes are fixedly provided on the needle plate, and the probes include a needle tube, a conductive needle and a hole-digging needle, the conductive needle is slidably connected to the needle tube, and the hole-digging needle is fixed to one end of the conductive needle away from the needle tube.
[0004] The probe includes a needle tube and a conductive needle. The needle tube is cylindrical. The conductive needle includes a needle head and a first needle rod. The needle head is fixed to the end of the first needle rod. The first needle rod is inserted into the needle tube and slidably connected with the needle tube. In this embodiment, the first needle rod is cylindrical, and the diameter of the first needle rod is slightly smaller than the inner diameter of the needle tube, so that the first needle rod and the needle tube have a better sliding connection effect. The needle tube includes a first branch pipe part and a second branch pipe part. A limit ring is set between the first branch pipe part and the second branch pipe part. With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: the overall structure of the conductive needle in the related technologies is complicated, thereby increasing the manufacturing cost of the conductive needle. Summary of the invention
[0005] In order to reduce the manufacturing cost of a conductive needle, a detection fixture, and a detection device, the present application provides a conductive needle, a detection fixture, and a detection device for detecting a PCB.
[0006] The present application provides a conductive needle, a detection fixture and a detection device for detecting PCB, which adopt the following technical solutions: In a first aspect, the present application discloses a conductive pin for detecting a PCB, which includes a first needle bar and a boss. The boss is fixed on the first needle bar, and the diameter of the boss is greater than the diameter of the first needle bar.
[0007] By adopting the above technical solution, during the process of detecting the PCB with the conductive pin, the lifting of the conductive pin is controlled by a detection fixture and a detection device to insert the conductive pin into the through hole of the PCB. The boss can not only limit the insertion depth of the conductive pin, but also ensure that the end of the conductive pin passes through the PCB. At the same time, since the conductive pin in the present application only includes a first needle bar and a boss, while the conductive pin in the background art includes a needle tube and a conductive pin. The needle tube is cylindrical, the conductive pin includes a needle tip and a first needle bar, the needle tip is fixed at the end of the first needle bar, and the first needle bar is inserted into the needle tube and is slidably connected with the needle tube. Therefore, compared with the conductive pin in the background art, the conductive pin in the present application has a simple structure, which not only reduces the manufacturing cost of the conductive pin, but also improves the production efficiency of the conductive pin.
[0008] In a second aspect, the present application discloses a detection fixture, which includes the above conductive pin.
[0009] By adopting the above technical solution, not only the manufacturing cost of the detection fixture is reduced, but also the production efficiency of the detection fixture is improved.
[0010] Optionally, the detection fixture further includes a fixed seat and a lifting seat. The lifting seat includes a top plate, a bottom plate and a connecting member. The top end of the connecting member is fixedly connected to the top plate, and the bottom end of the connecting member is fixedly connected to the bottom plate. A plurality of sliding holes are formed in the bottom plate, and the sliding holes correspond to the conductive pins one by one. The first needle bar passes through the sliding holes, and the first needle bar is slidably matched with the sliding holes. An installation hole is formed in the top plate, and a spring is arranged in the installation hole. One end of the spring is fixedly connected to the top plate, and the other end of the spring is fixedly connected to the end of the first needle bar. The first needle bar is slidably matched with the installation hole. A plurality of first through holes are formed in the fixed seat, and the first through holes correspond to the first needle bars one by one. The first needle bar is slidably matched with the first through holes.
[0011] By adopting the above technical solution, by using the fixed seat and the lifting seat in combination, during the actual detection process of the detection fixture, first place the PCB on the fixed seat, and then drive the lifting seat to lift and lower through the detection device. During the lifting and lowering process of the lifting seat, the first needle bar first passes through the PCB and then inserts into the first through-hole on the fixed seat. The convex platform can limit the depth of the first needle bar inserted into the PCB, thereby restricting the further descent of the first needle bar. At this time, the lifting seat continues to descend. The first needle bar not only slidably cooperates with the sliding hole on the bottom plate, but also slidably cooperates with the mounting hole on the top plate, and at the same time compresses the spring to store elastic potential energy in the spring, so as to realize the detection of the PCB. Compared with the detection fixture in the background technology, it not only has a simple structure, but also can achieve the same function.
[0012] Optionally, a rounded corner is provided at the end of the first needle bar.
[0013] By adopting the above technical solution, the pressure of the end of the first needle bar on the PCB is reduced, which has a protective effect on the PCB.
[0014] Optionally, a plurality of punching needles are fixedly arranged on the bottom plate. The punching needle includes a second needle bar, and the structure of the second needle bar is the same as that of the first needle bar.
[0015] By adopting the above technical solution, during the process of driving the bottom plate to lift and lower by the detection device, it is convenient to realize the punching function of the PCB.
[0016] Optionally, a plurality of second through-holes are formed in the fixed seat, and the second through-holes correspond to the second needle bars one by one, and the second needle bars slidably cooperate with the second through-holes.
[0017] By adopting the above technical solution, during the process of driving the bottom plate to lift and lower by the detection device, the second needle bar passes through the PCB during the lifting and lowering process, so as to realize the punching function.
[0018] In a third aspect, the present application also discloses a detection device, including the above detection fixture.
[0019] By adopting the above technical solution, the detection device not only has a punching function, but also has a detection function, and at the same time reduces the overall manufacturing cost of the detection fixture.
[0020] Optionally, it includes a frame and a lifting assembly. The lifting assembly is arranged on the frame, and the lifting assembly is used to drive the lifting seat to lift and lower; the fixed seat is fixed on the frame, and the fixed seat is located below the lifting seat.
[0021] By adopting the above technical solution, the lifting assembly drives the lifting seat to lift and lower. During the lifting and lowering process, the lifting seat not only has a punching function, but also has a detection function, and at the same time reduces the overall manufacturing cost of the detection fixture.
[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. During the process of detecting the PCB with the conductive needle, the lifting of the conductive needle is controlled by the detection fixture and the detection device, so as to insert the conductive needle into the through hole of the PCB. The convex platform can not only limit the insertion depth of the conductive needle, but also ensure that the end of the conductive needle passes through the PCB. At the same time, since the conductive needle in the present application only includes the first needle rod and the convex platform, while the conductive needle in the background technology includes a needle tube and a conductive needle, the needle tube is cylindrical, the conductive needle includes a needle head and a first needle rod, the needle head is fixed at the end of the first needle rod, and the first needle rod is inserted into the needle tube and is slidably connected with the needle tube. Therefore, compared with the conductive needle in the background technology, the conductive needle in the present application has a simple structure, which not only reduces the manufacturing cost of the conductive needle, but also improves the production efficiency of the conductive needle; 2. It not only reduces the manufacturing cost of the detection fixture, but also improves the production efficiency of the detection fixture; 3. The detection device not only has the function of punching holes, but also has the detection function, and also reduces the overall manufacturing cost of the detection fixture. Description of the Drawings
[0023] Figure 1 It is a schematic structural diagram of the PCB conductive needle and others in the embodiment of the present application.
[0024] Figure 2 It is a schematic structural diagram of the detection fixture in the embodiment of the present application.
[0025] Figure 3 It is what the detection device in the embodiment of the present application has.
[0026] Figure 4 It is Figure 3 A partial enlarged view of part A in
[0027] Figure 5 It is a schematic structural diagram of the detection device in the embodiment of the present application.
[0028] Description of the Reference Numerals: 1. Conductive needle; 11. First needle rod; 12. Convex platform; 121. Column head; 122. Tapered platform; 13. Fillet; 2. Fixed seat; 21. First through hole; 22. Second through hole; 3. Lifting seat; 31. Top plate; 32. Bottom plate; 33. Connecting member; 34. Sliding hole; 35. Mounting hole; 36. Threading hole; 4. Second needle rod; 5. Frame; 6. Spring; 7. Lifting assembly; 71. Lifting driving member; 72. Lifting plate; 8. Wire collecting tube. Detailed Embodiments
[0029] The following will further describe the present application in detail with reference to the attached Figures 1-5 drawings.
[0030] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by those skilled in the art to which this application pertains. The "first", "second" and similar terms used in this application do not denote any order, quantity or importance, but are only used to distinguish different components.
[0031] Referring to Figure 1 , in a first aspect, this application discloses a conductive pin 1 for detecting a PCB, including a first needle rod 11 and a boss 12. The boss 12 is fixed on the first needle rod 11. Both ends of the first needle rod 11 extend beyond the end of the boss 12, and the diameter of the boss 12 is greater than the diameter of the first needle rod 11. Further, the boss 12 includes a column head portion 121 and a frustum portion 122. The column head portion 121 is cylindrical, and the frustum portion 122 is frustum-shaped.
[0032] Continuing to refer to Figure 1 , during the process of the conductive pin 1 detecting the PCB, the lifting and lowering of the conductive pin 1 is controlled by a detection fixture and a detection device to insert the conductive pin 1 into the through holes of the PCB. The boss 12 can not only limit the insertion depth of the conductive pin 1, but also ensure that the end of the conductive pin 1 passes through the PCB. At the same time, since the conductive pin 1 in this application only includes the first needle rod 11 and the boss 12, while the conductive pin 1 in the background art includes a needle tube and the conductive pin 1. The needle tube is cylindrical, the conductive pin 1 includes a needle tip and the first needle rod 11, the needle tip is fixed at the end of the first needle rod 11, and the first needle rod 11 is inserted into the needle tube and slidably connected to the needle tube. Therefore, compared with the conductive pin 1 in the background art, the conductive pin 1 in this application has a simple structure, which not only reduces the manufacturing cost of the conductive pin 1, but also improves the production efficiency of the conductive pin 1.
[0033] Referring to Figure 2 , in a second aspect, this application also discloses a detection fixture, and the detection fixture includes the above-mentioned conductive pin 1. Further, the detection fixture also includes a fixed seat 2 and a lifting seat 3, and the specific shape of the fixed seat 2 is not limited.
[0034] Referring to Figure 2 and Figure 3, in this embodiment, the lifting seat 3 includes a top plate 31, a bottom plate 32 and a connecting member 33. Specifically, the shape of the connecting member 33 can be block-shaped, plate-shaped or rod-shaped. The top end of the connecting member 33 is fixedly connected to the top plate 31, and the bottom end of the connecting member 33 is fixedly connected to the bottom plate 32. A plurality of sliding holes 34 are formed in the bottom plate 32, and the sliding holes 34 correspond to the conductive pins 1 one by one. The first needle rod 11 passes through the sliding holes 34, and the first needle rod 11 is slidably engaged with the sliding holes 34. Correspondingly, an installation hole 35 is formed in the top plate 31, and a spring 6 is arranged in the installation hole 35. The spring 6 extends in the vertical direction. The top end of the spring 6 is fixedly connected to the top plate 31, and the bottom end of the spring 6 is fixedly connected to the end of the first needle rod 11. The first needle rod 11 is slidably engaged with the installation hole 35. A plurality of first through holes 21 are formed in the upper surface of the fixed seat 2, and the first through holes 21 correspond to the first needle rods 11 one by one. The first needle rods 11 are slidably engaged with the first through holes 21. And a wire passing hole 36 for guiding through is formed at the top end of each installation hole 35, and the diameter of the wire passing hole 36 is smaller than the diameter of the installation hole 35.
[0035] Refer to Figure 1 , a rounded corner 13 is provided at the bottom end of each first needle rod 11. The rounded corner 13 reduces the pressure of the end of the first needle rod 11 on the PCB and has a protective effect on the PCB.
[0036] Refer to Figure 3 and Figure 4 , a plurality of hole punching needles are fixedly arranged on the bottom plate 32. Specifically, the hole punching needle includes a second needle rod 4, and the structure of the second needle rod 4 is the same as that of the first needle rod 11. During the process of driving the bottom plate 32 to lift by the detection device, it is convenient to realize the hole punching function of the PCB. A plurality of through second through holes 22 are formed in the upper surface of the fixed seat 2, and the second through holes 22 correspond to the second needle rods 4 one by one. The second needle rods 4 are slidably engaged with the second through holes 22. During the process of driving the bottom plate 32 to lift by the detection device, the second needle rods 4 pass through the PCB during the lifting process, thereby realizing the hole punching function.
[0037] Refer to Figure 2, by using the fixed seat 2 and the lifting seat 3 in combination, during the actual detection process of the detection fixture, first place the PCB on the fixed seat 2, and then drive the lifting seat 3 to lift and lower through the detection device. During the lifting and lowering process of the lifting seat 3, the first needle bar 11 and the second needle 4 are driven to first pass through the PCB and then inserted into the first threading hole 21 on the fixed seat 2. The boss 12 can limit the depth of insertion of the first needle bar 11 into the PCB, thereby restricting the further descent of the first needle bar 11. At this time, the lifting seat 3 continues to descend. The first needle bar 11 not only slidably cooperates with the sliding hole 34 on the bottom plate 32, but also slidably cooperates with the mounting hole 35 on the top plate 31, and at the same time compresses the spring 6 to store elastic potential energy in the spring 6, so as to simultaneously realize the functions of detecting and punching holes in the PCB; compared with the detection fixture in the background technology, it not only has a simple structure but also can achieve the same functions.
[0038] Referring to Figure 5 , thirdly, the present application also discloses a detection device including the above detection fixture. Specifically, the detection fixture includes a frame 5 and a lifting assembly 7. The structure of the frame 5 is prior art and will not be described in detail here. Specifically, the lifting assembly 7 includes a lifting driving member 71 and a lifting plate 72. The lifting driving member 71 is arranged on the frame 5 and is used to drive the lifting plate 72 to lift and lower. The top plate 31 is fixed to the lower surface of the lifting plate 72. In this embodiment, specifically, the lifting driving member 71 can be a cylinder or a hydraulic cylinder.
[0039] The fixed seat 2 is fixed on the frame 5 and is located below the lifting seat 3. The lifting assembly 7 drives the lifting seat 3 to lift and lower. During the lifting and lowering process of the lifting seat 3, it not only has the function of punching holes but also has the function of detection, and at the same time reduces the overall manufacturing cost of the detection fixture. A wire collecting tube 8 for guiding through is arranged between the lifting frame and the lifting plate 72. The wire collecting tube 8 is a rigid tube and is prior art and will not be described in detail here.
[0040] The implementation principle of the above embodiment is as follows: during the process of detecting the PCB by the conductive needle 1, the lifting and lowering of the conductive needle 1 is controlled through the detection fixture and the detection device to realize inserting the conductive needle 1 into the through hole of the PCB. The boss 12 can not only limit the insertion depth of the conductive needle 1 but also ensure that the end of the conductive needle 1 passes through the PCB; at the same time, since the conductive needle 1 in the present application only includes the first needle bar 11 and the boss 12, while the conductive needle 1 in the background technology includes a needle tube and the conductive needle 1. The needle tube is cylindrical, and the conductive needle 1 includes a needle tip and the first needle bar 11. The needle tip is fixed to the end of the first needle bar 11, and the first needle bar 11 is inserted into the needle tube and slidably connected with the needle tube. Therefore, compared with the conductive needle 1 in the background technology, the conductive needle 1 in the present application has a simple structure, not only reducing the manufacturing cost of the conductive needle 1 but also improving the production efficiency of the conductive needle 1.
[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.
Claims
1. A conductive needle for detecting a PCB, the conductive needle (1) comprising a first needle rod (11) and a boss (12), the boss (12) being fixed to the first needle rod (11), the diameter of the boss (12) being larger than the diameter of the first needle rod, and the diameter of the boss (12) being larger than the diameter of the first needle rod (11).
2. A detection fixture, characterized in that: It comprises the conductive needle (1) as claimed in claim 1.
3. The detection fixture according to claim 2, characterized in that: The invention comprises a fixed seat (2) and a lifting seat (3), wherein the lifting seat (3) comprises a top plate (31), a bottom plate (32) and a connecting piece (33), wherein the top end of the connecting piece (33) is fixedly connected to the top plate (31), and the bottom end of the connecting piece (33) is fixedly connected to the bottom plate (32); a plurality of sliding holes (34) are provided on the bottom plate (32), wherein the sliding holes (34) correspond one to one with the conductive needles (1), and the first needle rod (11) passes through the sliding holes (34), and the first needle rod (11) is slidingly matched with the sliding holes (34); The top plate (31) is provided with a mounting hole (35), a spring (6) is arranged in the mounting hole (35), one end of the spring (6) is fixedly connected to the top plate (31), the other end of the spring (6) is fixedly connected to the end of the first needle rod (11), and the first needle rod (11) is slidably matched with the mounting hole (35); The fixing seat (2) is provided with a plurality of first penetration holes (21), the first penetration holes (21) correspond to the first needle rods (11) one by one, and the first needle rods (11) are slidably matched with the first penetration holes (21).
4. The detection fixture according to claim 3, characterized in that: The end of the first needle rod (11) is provided with a rounded corner (13).
5. The detection fixture according to claim 4, characterized in that: A plurality of piercing needles are fixedly arranged on the bottom plate (32), and the piercing needles include a second needle bar (4), and the structure of the second needle bar (4) is the same as that of the first needle bar (11).
6. The detection fixture according to claim 5, characterized in that: The fixing seat (2) is provided with a plurality of second penetration holes (22), the second penetration holes (22) correspond to the second needle bars (4) one by one, and the second needle bars (4) are slidably matched with the second penetration holes (22).
7. A detection device, characterized in that: Comprising the detection fixture as described in any one of claims 3-6.
8. The detection device according to claim 7, characterized in that: The invention comprises a frame (5) and a lifting assembly (7), wherein the lifting assembly (7) is arranged on the frame (5), and the lifting assembly (7) is used to drive the lifting seat (3) to move up and down; the fixed seat (2) is fixed on the frame (5), and the fixed seat (2) is located below the lifting seat (3).