Embedded elastic sheet needle mold
Through the embedded structural design, the embedded shrapnel needle is between the needle plate and the tail needle plate, and the floating plate is floatingly connected to the needle plate, solving the existing shrapnel needle mold's problems of large impedance, complex installation and high cost, and achieving the effects of reduced impedance, simple structure, convenient operation and reduced cost.
Patent Information
- Application Number
- CN202420999440.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-05-10
AI Technical Summary
The existing shrapnel needle mold structure design has problems such as large impedance, complex installation and high cost, especially when testing precision signals.
The embedded structure design is adopted. Through the combination of the substrate, embedded needle plate module and floating plate module, the shrapnel needle is embedded between the needle plate and the tail needle plate. The floating plate is floatingly connected to the needle plate, removing the high screws such as floating plates, reducing the overall height, and the length of the shrapnel needle is also reduced accordingly, reducing the impedance.
It achieves a simple structure, reduced impedance, and no need for a shrapnel needle core support. The shrapnel needle will not fall off during disassembly, which is convenient to operate and reduces costs.
Smart Images
Figure CN222599721U_ABST
Abstract
Description
Technical Field
[0001] The utility model is applied to the technical field of spring piece needle moulds, and particularly relates to an embedded spring piece needle mould. Background Art
[0002] In the precision testing industry, spring pins are often used to test B2B connectors on flexible flat cables of various electronic products due to their small size, strong ability to pass large currents, and large contact area. The functions of current consumer electronic products are becoming more and more diverse, and the requirements for connector-side testing are also getting higher and higher. The size of spring pins is often related to their impedance. The larger the size, the higher the impedance. Therefore, when the customer has a high test demand for a certain signal, the test may fail due to excessive impedance. Therefore, streamlining the spring pin structure and reducing its size structurally is conducive to functional testing in actual production. The existing spring needle mold structure design often adopts an external floating plate, that is, the floating plate is locked on the base by equal-height screws. The spring needle of this structure is longer and the impedance is slightly larger, which may affect the test of precision signals. In addition, a matching mold core is required when installing the spring needle. The mold core has high precision requirements, which also means that the cost is relatively high. If a simple structure can be designed, the height of the spring needle can be reduced by an embedded structure design, the test impedance can be reduced, and the spring needle mold core does not need to be supported. When the board is removed during maintenance, the spring needle will not fall out. This embedded spring needle mold can solve the above problems. Utility Model Content
[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an embedded spring needle mold with a simple structure and an embedded structural design that reduces the height of the spring needle and reduces the test impedance, and does not require a spring needle mold core support, so that the spring needle will not fall out when the board is removed during maintenance.
[0004] The technical solution adopted by the utility model is: the utility model includes a base plate, an embedded needle plate module and a floating plate module, the embedded needle plate module includes a needle plate, a plurality of spring needles and a tail needle plate, the plurality of spring needles are embedded between the needle plate and the tail needle plate, the tail needle plate is provided with a plurality of spring needle mounting grooves, the tail connecting ends of the plurality of spring needles are limitedly matched with the plurality of spring needle mounting grooves, the plurality of spring needles are matched with the floating plate module through the needle plate, the base plate is provided with a limited opening, the tail needle plate is matched with the limited opening and is connected and conducted with the external PCB board at the lower end of the base plate.
[0005] Furthermore, a guide platform is provided at the upper end of the needle plate, and a plurality of probe holes are provided on the guide platform, and a plurality of the probe ends of the spring needle heads cooperate with the floating plate module through the plurality of probe holes.
[0006] Furthermore, the floating plate module includes a floating plate and a plurality of floating springs, a plurality of floating plate guide pins are arranged on the upper end of the needle plate, the floating plate is provided with a plurality of floating plate positioning holes, and the plurality of floating plate positioning holes are positioned and matched with the plurality of floating plate guide pins.
[0007] Furthermore, a plurality of the floating springs are arranged between the floating plate and the needle plate, and the floating plate is in floating cooperation with the needle plate through a plurality of the floating springs and a plurality of the floating plate guide pins.
[0008] Furthermore, the floating plate is provided with a probe adapter, and the probe ends of the plurality of spring needle heads cooperate with the probe adapter through the needle plate, and the probe adapter is connected and conducted with the connection end of the product to be tested.
[0009] Furthermore, the needle plate is connected to the base plate via a plurality of mounting screws.
[0010] Furthermore, a plurality of PCB positioning posts are provided on the lower end surface of the substrate, and an external PCB board is connected to the lower end surface of the substrate via the plurality of PCB positioning posts.
[0011] Furthermore, the substrate is also provided with a plurality of substrate positioning holes, and the plurality of substrate positioning holes cooperate with the external pressing modules.
[0012] Furthermore, the shrapnel needle includes a shrapnel probe part, a shrapnel main body part and a limiting connection part. The shrapnel probe part cooperates with the floating plate module through the probe hole. The limiting connection part cooperates with the shrapnel needle mounting groove and is connected and conducted with the external PCB board at the lower end of the substrate.
[0013] The beneficial effects of the utility model are as follows: the floating plate is floatingly connected to the needle plate. Due to the built-in design of the floating plate, a group of floating plate equal height screws are optimized and removed. Since the overall height is reduced, the required spring needle does not need to be too long, which is beneficial to reducing impedance and has positive significance for testing. The spring needle is supported by the tail needle plate, and the spring needle is limited by several spring needle mounting grooves on the tail needle plate. The spring needle will not be offset during the test. After the test is completed, the spring needle will not fall off after the PCB board on the lower end face of the substrate is removed. The tail needle plate can be disassembled to replace the needle, which is easy to operate, reduces the cost of the spring needle mold, and reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a three-dimensional view of the utility model;
[0015] Figure 2 It is a stereoscopic view of another viewing angle of the utility model;
[0016] Figure 3 It is an exploded view of the utility model;
[0017] Figure 4 is a three-dimensional view of the floating plate;
[0018] Figure 5 is a three-dimensional view of the needle plate;
[0019] Figure 6 is a three-dimensional view of the tail pin plate;
[0020] Figure 7 It is a three-dimensional view of the shrapnel needle. DETAILED DESCRIPTION
[0021] like Figures 1 to 7 As shown, in this embodiment, the utility model includes a substrate 1, an embedded needle plate module 2 and a floating plate module 3, the embedded needle plate module 2 includes a needle plate 21, a plurality of spring needles 22 and a tail needle plate 23, a plurality of the spring needles 22 are embedded between the needle plate 21 and the tail needle plate 23, the tail needle plate 23 is provided with a plurality of spring needle mounting grooves 24, the tail connecting ends of the plurality of the spring needles 22 are limitedly matched with the plurality of the spring needle mounting grooves 24, the plurality of the spring needles 22 are matched with the floating plate module 3 through the needle plate 21, the substrate 1 is provided with a limiting opening 4, the tail needle plate 23 is matched with the limiting opening 4 and is connected and conducted with the external PCB board at the lower end of the substrate 1. It can be seen that the floating plate module 3 is floatingly connected to the needle plate 21. Due to the built-in design of the floating plate module 3, a group of floating plate equal height screws are optimized and removed. Since the overall height is reduced, the required spring needle 22 does not need to be too long, which is beneficial to reduce impedance and has positive significance for testing. The lower connecting end of the spring needle 22 is limitedly matched with several spring needle mounting grooves 24. After removing the PCB board on the lower end surface of the substrate 1, several spring needles 22 will not fall off, and the performance is more stable.
[0022] like Figure 3 and Figure 4 As shown, in this embodiment, a guide platform 25 is provided at the upper end of the needle plate 21, and the guide platform 25 is provided with a plurality of probe holes 26, and the head probe ends of the plurality of spring needles 22 are matched with the floating plate module 3 through the plurality of probe holes 26. It can be seen that the guide platform 25 can protect the head probe parts of the plurality of spring needles 22, and can better connect with the floating module 3, so as to avoid the plurality of spring needles 22 being damaged by deviation during the downward pressing and floating process.
[0023] like Figure 3 and Figure 4As shown, in this embodiment, the floating plate module 3 includes a floating plate 31 and a plurality of floating springs 32, a plurality of floating plate guide pins 5 are provided at the upper end of the needle plate 21, the floating plate 31 is provided with a plurality of floating plate positioning holes 33, and the plurality of floating plate positioning holes 33 are positioned and matched with the plurality of floating plate guide pins 5. It can be seen that the plurality of floating plate guide pins 5 can make the floating plate 31 better connected with the needle plate 21, and avoid the displacement of the plurality of spring pins during the pressing process.
[0024] like Figure 3 and Figure 4 As shown, in this embodiment, a plurality of floating springs 32 are arranged between the floating plate 31 and the needle plate 21, and the floating plate 31 is floatingly matched with the needle plate 21 through the floating springs 32 and the floating plate guide pins 5. It can be seen that during the docking process of the plurality of spring pins 22 with the B2B connector on the product flexible cable, the floating plate 31 can provide a floating effect, increase the compression stroke of the probe end of the spring pin 22, and innovatively place the floating plate 31 on the base 1, while optimizing a set of equal height screws, and because the height is reduced, the required spring pin does not need to be too long, which is conducive to reducing impedance and has a positive significance for testing.
[0025] like Figure 1 and Figure 4 As shown, in this embodiment, the floating plate 31 is provided with a probe adapter 34, and the probe ends of the heads of the plurality of spring needles 22 are matched with the probe adapter 34 through the needle plate 21, and the probe adapter 34 is connected and conducted with the connection end of the product to be tested. It can be seen that the probe adapter 34 protects the plurality of spring needles 22 during the pre-pressing process to prevent overpressure from causing deformation of the plurality of spring needles 22.
[0026] like Figure 1 and Figure 3 As shown, in this embodiment, the needle plate 21 is connected to the base plate 1 by a plurality of mounting screws 6. It can be seen that the needle plate 21 is fixedly connected to the base 1, so that the floating plate 31 and the tail needle plate 23 can be stably connected to the base 1.
[0027] like Figure 2 and Figure 3 As shown, in this embodiment, the lower end surface of the substrate 1 is provided with a plurality of PCB positioning posts 7, and the external PCB board is connected to the lower end surface of the substrate 1 through the plurality of PCB positioning posts 7. It can be seen that the plurality of positioning posts 7 can ensure that the external PCB board can be stably connected to the tail pin board 23 without deviation.
[0028] like Figure 1 and Figure 2As shown, in this embodiment, the substrate 1 is further provided with a plurality of substrate positioning holes 8, and the plurality of substrate positioning holes 8 cooperate with the external pressing module. It can be seen that the plurality of substrate positioning holes 8 can stably fix the spring needle mold as a whole on the detection station, and the positioning is more accurate.
[0029] like Figure 3 and Figure 7 As shown, in this embodiment, the spring needle 22 includes a spring probe part 221, a spring body part 222 and a limit connection part 223. The spring probe part 221 cooperates with the floating plate module 3 through the probe hole 26. The limit connection part 223 cooperates with the spring needle mounting groove 24 and is connected and conducted with the external PCB board at the lower end of the substrate 1. It can be seen that the spring body part 222 plays the role of overall support, and the limit connection parts 223 cooperate with the spring needle mounting groove 24 to prevent the displacement during the pressing process, so that the detection process is more stable, and the service life of the spring needles 22 is longer.
[0030] The working principle of the utility model is as follows: before starting the equipment, the floating plate 31 is placed above the needle plate 21 through several of the floating plate guide pins 5 and several of the floating springs 32, and then the needle plate 21 is installed on the base 1 through several of the mounting screws 6, and several of the spring needles 22 are placed in the limit opening 4, and the module installation is completed by locking the tail needle plate 23. The external PCB board is installed on the base 1 through several of the PCB positioning columns 7 to complete the positioning of the test board, and the spring probe part 221 of several of the spring needles 22 on the probe adapter 34 is connected to the B2B connector on the product soft cable. After the test is completed, the external PCB board is removed, and the tail needle plate 23 is unlocked, and several of the spring needles 22 are replaced. Repeat the above steps to complete the built-in spring needle mold detection.
[0031] Although the embodiments of the present invention are described with practical solutions, they do not constitute limitations on the meaning of the present invention. For those skilled in the art, it is obvious to modify the implementation scheme and combine it with other solutions based on this description.
Claims
1. An embedded spring-type needle mold, comprising a base plate (1), an embedded needle plate module (2) and a floating plate module (3), characterized in that: The embedded needle plate module (2) comprises a needle plate (21), a plurality of spring needles (22) and a tail needle plate (23); the plurality of spring needles (22) are embedded between the needle plate (21) and the tail needle plate (23); the tail needle plate (23) is provided with a plurality of spring needle mounting grooves (24); the tail connection ends of the plurality of spring needles (22) are limitedly matched with the plurality of spring needle mounting grooves (24); the plurality of spring needles (22) are matched with the floating plate module (3) through the needle plate (21); the base plate (1) is provided with a limited position opening (4); the tail needle plate (23) is matched with the limited position opening (4) and is connected and conducted with an external PCB board at the lower end of the base plate (1).
2. The embedded spring needle mold according to claim 1, characterized in that: A guide platform (25) is provided at the upper end of the needle plate (21), and the guide platform (25) is provided with a plurality of probe holes (26). The probe ends of the heads of the plurality of spring needles (22) cooperate with the floating plate module (3) through the plurality of probe holes (26).
3. The embedded spring needle mold according to claim 1, characterized in that: The floating plate module (3) comprises a floating plate (31) and a plurality of floating springs (32); a plurality of floating plate guide pins (5) are arranged at the upper end of the needle plate (21); a plurality of floating plate positioning holes (33) are arranged on the floating plate (31); and the plurality of floating plate positioning holes (33) are positioned and matched with the plurality of floating plate guide pins (5).
4. The embedded spring needle mold according to claim 3, characterized in that: The plurality of floating springs (32) are arranged between the floating plate (31) and the needle plate (21), and the floating plate (31) is in floating cooperation with the needle plate (21) through the plurality of floating springs (32) and the plurality of floating plate guide pins (5).
5. The embedded spring needle mold according to claim 3, characterized in that: The floating plate (31) is provided with a probe adapter (34); the probe ends of the heads of a plurality of the spring needles (22) cooperate with the probe adapter (34) through the needle plate (21); and the probe adapter (34) is connected and conducted with a connection end of a product to be tested.
6. The embedded spring needle mold according to claim 1, characterized in that: The needle plate (21) is connected to the base plate (1) via a plurality of mounting screws (6).
7. The embedded spring needle mold according to claim 1, characterized in that: A plurality of PCB positioning columns (7) are provided on the lower end surface of the substrate (1), and an external PCB board is connected to the lower end surface of the substrate (1) via the plurality of PCB positioning columns (7).
8. The embedded spring needle mold according to claim 1, characterized in that: The substrate (1) is further provided with a plurality of substrate positioning holes (8), and the plurality of substrate positioning holes (8) cooperate with the external pressing modules.
9. The embedded spring needle mold according to claim 2, characterized in that: The spring needle (22) comprises a spring probe portion (221), a spring body portion (222) and a position-limiting connection portion (223); the spring probe portion (221) cooperates with the floating plate module (3) through the probe hole (26); the position-limiting connection portion (223) cooperates with the spring needle mounting groove (24) in a position-limiting manner and is connected and conducted with an external PCB board at the lower end of the base plate (1).