A circuit board connecting spring, a wiring terminal, a wiring strip and an intelligent terminal
By designing circuit board connection springs and utilizing structures such as barbed parts and return-limiting springs, the problem of inconvenient connection between circuit boards and terminal blocks was solved, achieving convenient separation and stable connection, extending service life and reducing contact damage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG NIKON ELECTRIC TECH CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-06-05
AI Technical Summary
In the existing technology, the connection between the circuit board and the terminal block is difficult to separate easily, and the fixed connection between the spring and the terminal is inconvenient.
The circuit board connection spring design includes a base plate, contact plate, and barb. The barb prevents the spring from easily moving out of the terminal block. Combined with the return spring and the separation spring, it ensures that the spring is stably installed and abuts against the conductive contacts of the circuit board.
It enables convenient separation of the circuit board and the terminal block, avoids the complexity of riveting, ensures a stable connection of the spring contacts, extends service life, and reduces contact damage.
Smart Images
Figure CN224328903U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of smart meters and smart terminals, and in particular to a circuit board connection spring, terminal block, terminal block and smart terminal. Background Technology
[0002] The smart terminal has an internal circuit board that connects to external signal lines, power lines, or button boxes to collect data such as power consumption statistics. In the past, the connection between the circuit board and the cable was achieved by using a terminal block at the end of the cable. The terminal block had pins that were plugged into holes on the circuit board and soldered. However, this method made it difficult to separate the terminal block when replacing the circuit board.
[0003] Therefore, some circuit boards have replaced the original solder holes with conductive contacts, and springs are installed inside the terminal blocks. The conductive contacts of the circuit board can be inserted into the terminal blocks, so that the springs press against the conductive contacts of the circuit board. For relevant content, please refer to the electrical connection springs of printed circuit boards in announcement number CN204858023U and the reliable connection method between circuit boards and terminals in publication number CN106025580A.
[0004] Regarding the aforementioned technologies, the fixed connection between the spring and the terminal block is achieved by riveting, which makes the installation and connection of the spring to the corresponding terminal block quite inconvenient. Utility Model Content
[0005] To facilitate the installation of spring contacts corresponding to terminal blocks, this application provides a circuit board connection spring contact, terminal block, terminal block, and smart terminal.
[0006] The technical solution provided in this application for a circuit board connection spring, terminal block, terminal block, and smart terminal adopts the following approach.
[0007] A circuit board connecting spring includes a base plate connected to a terminal block and a contact plate connected to the base plate and capable of contacting conductive contacts of the circuit board. The base plate is formed with a barb that can be embedded in the terminal block.
[0008] By adopting the above technical solution, the barb can prevent the spring from being easily moved out of the terminal block, so that when the circuit board is pulled out of the terminal block, the spring is not easily pulled out along with it. Furthermore, the connection between the spring and the terminal does not require riveting or other methods, which is relatively simple.
[0009] Optionally, the position where the barb is connected to the substrate is closer to the interior of the terminal block than the position where the barb is further away from the substrate.
[0010] By adopting the above technical solution, the spring can be directly pushed into the terminal block during installation, making installation more convenient and eliminating the need to design the barb part in a relatively complex shape.
[0011] Optionally, the substrate is provided with a reinforcing sheet, and there is an angle between the reinforcing sheet and the substrate. The reinforcing sheet is provided with a limiting spring that can abut against the surface of the contact piece away from the substrate.
[0012] By adopting the above technical solution, the substrate is less likely to be bent, ensuring that the spring is less likely to deform during the process of transferring and installing it into the terminal block after manufacturing. In addition, the setting of the limited spring element can also prevent the contact piece from rebounding too much while maintaining a high rebound force, so that the spring piece can be smoothly installed into the terminal block and can also be pressed tightly against the conductive contacts of the circuit board.
[0013] Optionally, the contact piece has a protrusion formed on the side opposite to the substrate, the surface of the protrusion being arc-shaped and the arc-shaped surface contacting the conductive contact of the circuit board.
[0014] By adopting the above technical solution, even if the circuit board is tilted or deformed, the arc-shaped surface of the protrusion can always make good contact with the conductive contacts of the circuit board, and the sharp side of the contact piece is less likely to come into contact with the circuit board and cause damage.
[0015] Optionally, the contact piece is provided with a limiting separation member that can abut against the side of the terminal block away from the base plate so that the base plate abuts against the terminal block. The limiting separation member is formed with a downward pressing slope. The downward pressing slope is located on the side of the limiting separation member closer to the inside of the terminal block. The closer the downward pressing slope is to the inside of the terminal block, the smaller the distance between it and the base plate.
[0016] By adopting the above technical solution, the spring is not easy to shake in the terminal block when the circuit board is not plugged into the terminal block, ensuring that the barb is not easy to detach from the terminal block, the spring is not easy to fall out of the terminal block, and the setting of the downward pressure slope also makes it easier to insert the spring into the terminal block.
[0017] Optionally, the substrate is provided with a reserved part to facilitate the transfer of the entire spring sheet.
[0018] By adopting the above technical solution, when performing automated operations such as moving the spring and installing the corresponding terminal block, the corresponding robotic arm or clamping fixture can clamp the reserved part without easily causing damage to other parts of the spring.
[0019] Optionally, the contact piece includes a spring-loaded member capable of elastic deformation, a conductive member connected to the side of the spring-loaded member away from the substrate and capable of abutting against the conductive contacts of the circuit board, and an inner curved section formed on the side of the spring-loaded member near the substrate, which is bent towards the side of the conductive member.
[0020] By adopting the above technical solution, the large stress that originally existed at the connection between the spring and the base plate due to the long-term deformation of the spring can be partially distributed by the inner bending section, making the connection between the spring and the base plate less prone to breakage and extending the overall service life of the spring.
[0021] A terminal block includes a terminal body that connects to a circuit board connecting spring as described above, the terminal body being formed with a groove for a barb to enter.
[0022] By adopting the above technical solution, it is not easy to pull out the spring when the circuit board is pulled out of the terminal block, and the connection between the spring and the terminal does not require riveting or other methods, which is relatively simple.
[0023] A terminal block includes an insulating base for mounting the aforementioned circuit board connecting spring and the aforementioned terminal block, wherein a protrusion is formed within the insulating base that can abut against a limiting separation member.
[0024] By adopting the above technical solution, the spring is not easy to wobble inside the terminal block when the circuit board is not plugged into the terminal block.
[0025] A smart terminal includes a housing on which the above-mentioned terminal block is installed, and a circuit board body inside the housing that can be plugged into an insulating base so that conductive contacts and contact plates come into contact.
[0026] By adopting the above technical solution, when the circuit board is pulled out of the terminal block, it is not easy to pull out the spring along with it, and the connection between the spring and the terminal does not require riveting or other methods, which is relatively simple.
[0027] In summary, this application includes at least the following beneficial effects.
[0028] 1. When pulling the circuit board out of the terminal block, it is not easy to pull out the spring along with it, and the connection between the spring and the terminal does not require riveting or other methods, which is relatively simple.
[0029] 2. The setting of the spring limiter also allows the contact piece to maintain a high spring force without rebounding too much, so that the spring piece can be smoothly installed into the terminal block while also abutting against the conductive contacts of the circuit board.
[0030] 3. Even if the circuit board is tilted or deformed, the arc-shaped surface of the protrusion can always make good contact with the conductive contacts of the circuit board, and it is not easy for the sharp sides of the contact pieces to come into contact with the circuit board and cause damage.
[0031] 4. When the circuit board is not plugged into the terminal block, the spring is not easy to move inside the terminal block, ensuring that the barb is not easy to detach from the terminal and the spring is not easy to fall out of the terminal block.
[0032] 5. The inner bending section can distribute some of the large stress that originally existed at the connection between the spring and the base plate due to the long-term deformation of the spring. This makes the connection between the spring and the base plate less prone to breakage and extends the overall service life of the spring. Attached Figure Description
[0033] Figure 1 This is a schematic diagram of the structure of a circuit board connecting spring according to this application;
[0034] Figure 2 This is a schematic diagram of the structure of a terminal block according to this application;
[0035] Figure 3 This is a schematic diagram of the structure of a terminal block according to this application;
[0036] Figure 4 yes Figure 3 Enlarged view of point A in the middle;
[0037] Figure 5 This is a structural schematic diagram of a smart terminal according to this application.
[0038] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Contact plate; 3. Barbed part; 21. Terminal body; 22. Groove; 23. Insulating base; 24. Protrusion; 25. Outer shell; 26. Circuit board body; 31. Reinforcing plate; 32. Springback limiting part; 33. Protrusion; 34. Separation limiting part; 35. Downward pressure slope; 36. Reserved part; 37. Springback part; 38. Conducting part; 39. Inner bend section. Detailed Implementation
[0039] The present application will be further described in detail below with reference to the accompanying drawings.
[0040] This application discloses a circuit board connection spring, referring to... Figure 1 It includes a base plate 1 that can be inserted into the terminal block so that the bottom surface abuts against the terminal block. A contact piece 2 is formed on one side of the base plate 1. The upper part of the contact piece 2 abuts against the conductive contact of the circuit board that is inserted into the bottom surface of one end of the terminal block to realize current conduction.
[0041] Reference Figure 1The contact piece 2 includes a spring-loaded element 37 and a conductive element 38. The spring-loaded element 37 can be disposed on any side of the base plate 1. In this embodiment, the spring-loaded element 37 is disposed on the side of the base plate 1 away from the inside of the terminal block. The conductive element 38 is located on the upper part of the end of the spring-loaded element 37 away from the base plate 1. The shape of the spring-loaded element 37 is not limited, as long as it can maintain the spring force so that the conductive element 38 abuts against the conductive contact of the circuit board. In this embodiment, a portion of the spring-loaded element 37 is arc-shaped. At the same time, an inner bend 39 is formed near the bottom of the base plate 1. The inner bend 39 bends to the side of the conductive element 38 so that the inner bend 39 can share some of the stress at the connection between the spring-loaded element 37 and the base plate 1, making the connection between the spring-loaded element 37 and the base plate 1 less prone to damage.
[0042] Reference Figure 1 The shape of the conductive element 38 is not limited. In this embodiment, the conductive element 38 can be designed to be approximately U-shaped, and the bent portion of the conductive element 38 is away from the substrate 1. A protrusion 33 is formed on the surface of the conductive element 38 away from the substrate 1. The surface of the protrusion 33 is arc-shaped, and the protrusion 33 abuts against the conductive contacts of the circuit board, so that the sharp side of the conductive element 38 is not easily directly abutted against the conductive contacts of the circuit board. The position of the protrusion 33 on the conductive element 38 is not limited. In this embodiment, the protrusion 33 can be located near the middle position in the width direction of the conductive element 38.
[0043] Reference Figure 1 A reinforcing piece 31 is fixedly connected to the side of the base plate 1. There is an angle between the reinforcing piece 31 and the base plate 1 to reduce the space occupied by the spring piece in the terminal block. In this embodiment, the reinforcing piece 31 is perpendicular to the base plate 1 and can be set on both sides of the base plate 1. A limiting spring member 32 is fixedly connected to the side of the two reinforcing pieces 31. The limiting spring member 32 can abut against the connection between the spring member 37 and the conductor 38, so that the spring member 37 does not rebound too much while maintaining a high spring force, so that the gap between the conductor 38 and the base plate 1 is not too large, so that the spring piece can be placed into the terminal block.
[0044] Reference Figure 1 The bottom surface of the base plate 1 is formed with a barb 3. The end of the barb 3 that is not connected to the base plate 1 is away from the base plate 1. The end of the barb 3 away from the base plate 1 can be close to or away from the inside of the terminal block. In this embodiment, the end of the barb 3 away from the base plate 1 is away from the inside of the terminal block, so that when the spring is placed into the terminal block, the barb 3 will be squeezed into the base plate 1 by the terminal until the barb 3 is aligned with the designated position of the terminal. The barb 3 will then spring back and be embedded in the designated position of the terminal, so that the spring is difficult to remove from the terminal block.
[0045] Reference Figure 1A limiting separation member 34 is fixedly connected to one end of the spring-loaded member 37 near the conductive member 38. The upper part of the limiting separation member 34 can abut against the inside of the terminal block, so that even if the circuit board is not plugged into the terminal block after the spring is installed, there is not a gap between the spring and the terminal, so that the barb 3 can be stably embedded in the terminal, and the spring is not easy to detach from the terminal block. In this embodiment, the limiting separation member 34 is provided on both sides of the spring-loaded member 37. Furthermore, a downward pressing slope 35 is formed on the surface of the limiting separation member 34 away from the base plate 1. The downward pressing slope 35 is located on the side of the limiting separation member 34 near the inside of the terminal block. The closer the downward pressing slope 35 is to the inside of the terminal block, the smaller the gap between it and the base plate 1. So that when the spring is inserted into the inside of the terminal block, if the spring is too high, the inside of the terminal block will first abut against the downward pressing slope 35, so that the spring moves down a certain height to install the spring into the corresponding terminal block.
[0046] Reference Figure 1 The substrate 1 is fixedly connected with a reserved part 36 for clamping by grippers, etc. The number and position of the reserved part 36 are not limited. In this embodiment, the reserved part 36 is provided on both sides of the substrate 1, and the reserved part 36 is located on the side of the substrate 1 away from the inside of the terminal block.
[0047] This application also discloses a wiring terminal, as shown in the embodiments. Figure 2 It includes a terminal body 21 that abuts against the connecting spring of the circuit board mentioned above. The terminal body 21 is formed with a groove 22 for the barb 3 to enter. The shape and position of the groove 22 are not restricted in much way, as long as it is adapted to the barb 3.
[0048] This application also discloses a terminal block, as shown in the embodiments. Figure 3 and Figure 4 The device includes an insulating base 23 in which a circuit board connecting spring and a terminal block are installed. The insulating base 23 has a protrusion 24 formed within it that abuts against a limiting separator 34. The terminal block is integrally injection molded inside the insulating base 23 to ensure its stability. The spring is subsequently inserted into the insulating base 23.
[0049] This application also discloses a smart terminal, as described in the embodiments below. Figure 5 The housing 25, which contains the aforementioned terminal block, has a circuit board body 26 detachably connected to the housing 25 and capable of being plugged into the insulating base 23 so that the conductive contacts and the contact piece 2 come into contact.
[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A circuit board connecting spring, comprising a base plate (1) connected to a terminal block, and a contact plate (2) connected to the base plate (1) and capable of contacting a conductive contact of the circuit board, characterized in that: The substrate (1) is formed with a barb (3) that can be embedded in the terminal block.
2. The circuit board connecting spring according to claim 1, characterized in that: The position where the barb (3) is connected to the base plate (1) is closer to the inside of the terminal block than the position where the barb (3) is further away from the base plate (1).
3. A circuit board connecting spring according to claim 1, characterized in that: The substrate (1) is provided with a reinforcing piece (31), and there is an angle between the reinforcing piece (31) and the substrate (1). The reinforcing piece (31) is provided with a limiting spring (32) that can abut against the surface of the contact piece (2) away from the substrate (1).
4. A circuit board connecting spring according to claim 1, characterized in that: The contact piece (2) has a protrusion (33) formed on the side away from the base plate (1). The surface of the protrusion (33) is arc-shaped and the arc-shaped surface contacts the conductive contact of the circuit board.
5. A circuit board connecting spring according to claim 1, characterized in that: The contact piece (2) is provided with a limiting member (34) that can abut against the side of the terminal block away from the base plate (1) so that the base plate (1) abuts against the terminal block. The limiting member (34) is formed with a downward pressing slope (35). The downward pressing slope (35) is located on the side of the limiting member (34) closer to the inside of the terminal block. The closer the downward pressing slope (35) is to the inside of the terminal block, the smaller the distance between it and the base plate (1).
6. A circuit board connecting spring according to claim 1, characterized in that: The substrate (1) is provided with a reserved part (36) to facilitate the transfer of the entire spring sheet.
7. A circuit board connecting spring according to claim 1, characterized in that: The contact piece (2) includes a spring-loaded member (37) capable of elastic deformation and a conductive member (38) connected to the side of the spring-loaded member (37) away from the substrate (1) and capable of abutting against the conductive contact of the circuit board. The spring-loaded member (37) has an inner curved section (39) formed on the side of the conductive member (38) that is bent towards the side of the substrate (1).
8. A terminal block, characterized in that: The terminal body (21) is connected to the circuit board connecting spring as described in any one of claims 1 to 7, and the terminal body (21) is formed with a groove (22) for the barb (3) to enter.
9. A terminal block, characterized in that: The insulating base (23) includes a circuit board connecting spring as described in any one of claims 1 to 7 and a terminal block as described in claim 8, wherein the insulating base (23) has a protrusion (24) formed therein that can abut against the limiting separation member (34).
10. A smart terminal, characterized in that: The device includes a housing (25) for mounting a terminal block as described in claim 9, and a circuit board body (26) inside the housing (25) that can be plugged into an insulating base (23) so that conductive contacts and contact pieces (2) come into contact.