An internal polarity structure for a terminal block and a terminal block assembly

Abstract

This utility model provides an internal polarity connection structure for terminal blocks and a terminal block assembly, relating to the field of electrical structure technology. It is suitable for connecting at least two terminal blocks, each terminal block including a conductive element, and the conductive elements of the terminal blocks are electrically connected through at least one pin. This solution facilitates installation and improves the stability of terminal block connections.

Description

Technical Field

[0001] This utility model relates to the field of electrical structure technology, and more specifically, to an internal pole connection structure of a terminal block. Background Technology

[0002] The main structure of current threadless terminal blocks generally includes a housing, a locking / unlocking mechanism, and a clamping mechanism. The locking / unlocking mechanism is used to open and close the clamping mechanism located inside the housing, allowing the wire to be inserted into the clamping mechanism when it is open and retaining the wire inside the terminal block's housing when it is closed, thereby fixing the wire and connecting multiple wires. To connect adjacent terminal blocks, existing technologies typically use methods such as bending the two sides of the conductive parts to make them directly contact each other, or using U-shaped parts for connection. For example, the invention patent CN110581386B discloses a quick-connect terminal block, including at least two terminals arranged side by side and conductive connectors respectively connected between the two adjacent terminals. The terminal includes a housing and a conductive component. The conductive component includes a C-shaped spring and a U-shaped conductive sheet. The C-shaped spring has a insertion hole in the middle. The closed contact end of the U-shaped conductive sheet passes through the insertion hole and abuts against the base. The two ends of the C-shaped spring have contact pieces bent toward the U-shaped conductive sheet. An insertion space is formed between the contact pieces and the closed contact end of the U-shaped conductive sheet for inserting external wires. The two ends of the conductive connector pass through the housings of the two adjacent terminals and are inserted into the open insertion ends of the U-shaped conductive sheets in the two terminals, thereby realizing the electrical connection between the two adjacent terminals.

[0003] However, the aforementioned prior art has relatively high requirements for the processing of conductive components, and the adjacent conductive components are prone to loosening and disconnection during shaking or other processes; in other words, the prior art has the problem of relatively complex structure and low stability in the electrical connection process between two adjacent terminals. Utility Model Content

[0004] This utility model discloses an internal polarity structure for a terminal block, which aims to solve the problems mentioned above.

[0005] The present invention adopts the following solution: An internal polarity structure for connecting at least two terminals, each terminal including a conductive element, wherein the conductive elements of the terminals are electrically connected to each other via at least one pin.

[0006] Furthermore, the conductive element is provided with at least one through hole, and a needle is inserted into each through hole to electrically connect at least two of the terminals.

[0007] Furthermore, the terminal block is also provided with a clamping member that is electrically connected to the conductive element and is suitable for clamping the wire. The needle is disposed below the clamping member and an elastic preload is formed between the needle and the connecting surface of the clamping member.

[0008] Furthermore, two needles are provided; the conductive element is located below the clamping element and forms a first support portion and a second support portion; the two needles pass through the through hole and are respectively placed in the space formed by the first support portion, the second support portion and the clamping element, so that the upper and lower sides of the needles are respectively in contact with the clamping element and the conductive element.

[0009] Furthermore, a stop is formed between the first support portion and the second support portion to support the contact of the clamping member.

[0010] Furthermore, the perforation is tightly fitted with the needle.

[0011] Furthermore, the sum of the cross-sectional areas of the two needles is not less than 1.5. .

[0012] This utility model also provides a terminal block assembly, which includes at least two terminals, and adjacent terminals are electrically connected through an internal polarity connection structure.

[0013] Furthermore, all of the terminals are electrically connected via the same set of pins.

[0014] Furthermore, the needle is provided with two needles.

[0015] Beneficial effects: This solution connects two or more terminals using at least one metal pin. This pin structure allows for electrical connection of multiple terminals using the same pin, offering advantages such as simplicity, ease of installation and connection, and high connection stability. Particularly when multiple terminals are connected side-by-side, only one set of pins is needed for electrical connection, simplifying assembly, increasing installation efficiency, reducing installation costs, and ensuring electrical connectivity between the terminals. Furthermore, positioning the pin between the conductive element and the clamping element, and ensuring their contact connection, further enhances connection stability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a terminal block assembly according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal polarity structure of a terminal block according to an embodiment of the present invention (one of the housings is hidden). Figure 3This is a schematic diagram of the internal polarity structure of a terminal block according to an embodiment of this utility model (all housings are hidden). Figure 4 This is a schematic diagram of the conductive component of an internal electrode connection structure of a terminal block according to an embodiment of this utility model.

[0017] Reference numerals: terminal block 10, housing 11, insertion hole 111, positioning post 112, conductive element 12, through hole 121, first support part 122, second support part 123, stop block 124, clamping element 13, needle 20. Detailed Implementation

[0018] Example 1 Combination Figures 1 to 4 As shown, this embodiment provides an internal polarity connection structure for connecting two adjacent terminals 10. Each terminal 10 includes a conductive element 12 and a clamping element 13 electrically connected to the conductive element 12 and adapted to clamp wires. The conductive elements 12 of two adjacent terminals 10 or the clamping elements 13 of two adjacent terminals 10 are electrically connected by at least one needle 20.

[0019] In this embodiment, the terminal block 10 includes a housing 11, a clamping member 13 fixed within the housing 11, and a conductive member 12. The clamping member 13 may be approximately U-shaped or V-shaped, and includes two elastic pieces. One elastic piece is fixed within the housing 11, and the other elastic piece is located within the insertion hole 111 of the housing 11, used to clamp the wire within the insertion hole 111 after insertion. It should be noted that the clamping member 13 may also be other metal conductive structures; this embodiment only shows one possible solution, but is not limited to this.

[0020] Combination Figures 2 to 4 As shown, the conductive element 12 is disposed within the housing 11 and includes two pins for connection to the circuit board. The clamping element 13 is in contact with the conductive element 12. In one embodiment, the conductive element 12 has two parallel through holes 121, and a pin 20 is inserted into each through hole 121 to electrically connect two adjacent terminals 10. It should be noted that this description uses the pin 20 connecting two terminals as an example. When there are more terminals 10, the pin 20 passes through the through holes 121 of the conductive element 12 of all terminals 10. The through hole 121 is designed to fit the structure of the pin 20, facilitating installation and connection. Here, the through hole 121 and the pin 20 fit tightly together to make the connection more stable. It should be noted that the pin 20, the conductive element 12, and the clamping element 13 are all made of conductive metal.

[0021] In a preferred embodiment, the needle 20 is positioned below the clamping member 13, and an elastic preload is formed between the needle 20 and the clamping member 13. Here, the elastic force of the clamping member 13 itself acts on the needle 20, maintaining the preload between the clamping member 13 and the needle 20, thus ensuring the connection stability between the needle 20 and the clamping member 13.

[0022] Specifically, in one embodiment, the conductive element 12 is located below the clamping element 13 and has a first support portion 122 and a second support portion 123 formed thereunder. Two needles 20 pass through the through hole 121 and are respectively placed within the space formed by the first support portion 122, the second support portion 123, and the clamping element 13, such that the upper and lower sides of the needles 20 are in contact with the clamping element 13 and the conductive element 12, respectively. By connecting the needles 20 in contact within the space formed by the first support portion 122, the second support portion 123, and the clamping element 13, the position of the needles 20 can be kept relatively fixed, and the contact connection between the needles 20 and the conductive element 12 and / or the clamping element 13 can be guaranteed. Further, a stop 124 is formed between the first support portion 122 and the second support portion 123 to support the contact of the clamping element 13. This stop 124 supports the clamping element 13 and keeps adjacent needles 20 in a relative position, preventing them from tilting.

[0023] In this embodiment, when a single needle 20 is used, the cross-sectional area of ​​the needle 20 is not less than 1.5. When two needles 20 are provided, the total cross-sectional area of ​​the two needles 20 is not less than 1.5. The limited cross-sectional area ensures that the terminal 10 can carry a current of 16A.

[0024] It should be noted that in other embodiments, more parallel needles 20 may be provided.

[0025] Example 2 Combination Figure 1 As shown, this embodiment provides a terminal block assembly, including at least two terminals 10, and adjacent terminals 10 are electrically connected through an internal polarity connection structure.

[0026] In one embodiment, the terminal block assembly comprises three or more terminals 10 joined together, and the conductive elements 12 of all the terminals 10 are electrically connected through the same group of pins 20. Here, the same group of pins 20 can consist of one pin 20 or two pins 20. It should be noted that the length of each pin 20 is manufactured according to the number of terminals 10 it needs to connect.

[0027] The housings 11 of adjacent terminals 10 can be connected by mutually cooperating positioning pins 112 and positioning holes provided on the side of the housings 11.

[0028] This pin 20 structure allows for the electrical connection of multiple terminals 10 using the same pin 20. On one hand, the pin 20 structure is simple, facilitating installation and connection; on the other hand, the connection stability is high. Especially when multiple terminals 10 are connected side-by-side, only one set of pins 20 is needed to electrically connect them, making assembly convenient, installation efficient, and reducing installation costs, while ensuring electrical connection between the multiple terminals 10.

[0029] It should be understood that the above are only preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited to the above embodiments. All technical solutions that fall within the scope of the present utility model are protected by the present utility model.

[0030] The accompanying drawings used in the above description of the embodiments only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

Claims

1. An internal pole bonding structure of a terminal adapted to connect at least two terminals, the terminal comprising an electrically conductive member, characterized by, The conductive elements of the terminal block are electrically connected by at least one needle; each conductive element has at least one through hole, and a needle is inserted into each through hole to electrically connect at least two terminal blocks; each terminal block is also provided with a clamping element that is electrically connected to the conductive element and is suitable for clamping the wire; the needle is located below the clamping element and forms an elastic preload between the needle and the connection surface of the clamping element; two needles are provided; the conductive element is located below the clamping element and forms a first support portion and a second support portion; the two needles pass through the through hole and are respectively placed in the space formed by the first support portion, the second support portion and the clamping element, and the upper and lower sides of the needles are respectively in contact with the clamping element and the conductive element; a stop is formed between the first support portion and the second support portion to support the contact of the clamping element.

2. The terminal interior pole bonding structure according to claim 1, characterized by The perforation fits tightly with the needle.

3. The internal polarity connection structure of the terminal block according to claim 1, characterized in that, The sum of the cross-sectional areas of the two needles is not less than 1.5 mm 2 .

4. A set of wiring terminals, characterized in that It includes at least two terminals, and adjacent terminals are electrically connected by an internal polarity connection structure as described in any one of claims 1-3.

5. The set of wiring terminals according to claim 4, characterized in that The terminal block is provided in a plurality of manners, and all of the terminal blocks are electrically connected by at least one of the pins.

6. The set of wiring terminals according to claim 5, wherein The needle is provided in two parts.

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