A type of busbar conductive strip pin terminal

Abstract

This utility model provides a busbar conductive strip pin-type terminal block, including a busbar. Two busbars pass through the wire-passing holes and insulating sleeves of an insulating sealed end cap and are inserted into the pin-type head. The pin-type head and the insulating sleeve are thermally fused together. The insulating sealed end cap is fitted onto the insulating sleeve and the two are fixed together by hexagonal socket head caps. A partition liner is integrally provided in the middle of the insulating sleeve. This utility model improves insulation and transmission efficiency by spirally winding the busbars around the pin-type head. The insulating sealed end cap and the insulating sleeve are fitted together and fixed by bolts, enhancing the connection stability. The partition liner helps to fix the busbars, and its special shape facilitates wire threading, optimizes installation, and ensures long-term reliable electrical connection.

Description

Technical Field

[0001] This utility model belongs to the technical field of busbar terminal blocks, and particularly relates to a busbar conductive strip pin-type terminal block. Background Technology

[0002] In power transmission and distribution systems, busbars play a crucial role in collecting and distributing electrical energy. To achieve stable and reliable electrical connections between busbars and various electrical equipment, terminal blocks are indispensable components. Crimped pin-type terminal blocks, as a common connection component, are fitted onto the stripped end of the busbar and then crimped together using crimping pliers to achieve electrical continuity. However, in practical applications, when existing pin-type terminal blocks are used to crimp two busbars, a gap inevitably exists between them. This problem makes it difficult for the terminal block's insulating sleeve to make firm and tight contact with the busbar insulation layer, not only reducing insulation performance and posing a risk of leakage, but also potentially increasing the resistance at the connection point due to poor contact, leading to overheating or even localized overheating, seriously affecting the stability and safety of power transmission. Furthermore, after installation, the relative position between the two busbars is difficult to fix with traditional pin-type terminal blocks. When subjected to external forces or vibrations, they are prone to loosening and displacement, further exacerbating the unreliability of the electrical connection, shortening equipment lifespan, increasing maintenance costs, and increasing the risk of system failure.

[0003] Therefore, it is essential to invent a busbar conductive strip pin-type terminal block. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a busbar conductive strip pin-type terminal block, including a busbar, an insulating sealed end cap, a through hole, an insulating sleeve, a pin-shaped head, an internal hex bolt, and a separating inner liner. Two busbars pass through the through hole and the insulating sleeve of the insulating sealed end cap and are inserted into the pin-shaped head. The pin-shaped head and the insulating sleeve are thermally fused together. The insulating sealed end cap is fitted onto the insulating sleeve and the two are fixed together by the internal hex bolt. A separating inner liner is integrally provided in the middle position of the insulating sleeve.

[0005] Preferably, the stripped ends of the two busbars pass sequentially through the wire hole and insulating sleeve of the insulating closed end cap, and are inserted into the needle head, where they are spirally wound together.

[0006] Preferably, the outer ring surface of the insulating sleeve is fitted together with the inner ring surface of the insulating closed end cap, the cross-section of the insulating closed end cap is a side-standing "U" shaped structure, and the insulating closed end cap is provided with a through hole that allows two busbars to pass through.

[0007] Preferably, the insulating end cap and the insulating sleeve are made of the same material, and the insulating end cap has countersunk holes that match the internal hexagon bolts at its upper and lower positions.

[0008] Preferably, the integrally formed partition liner inside the insulating sleeve is provided with mounting holes corresponding to the countersunk holes of the insulating closed end cap, and the mounting holes of the partition liner are matched with hexagon socket bolts.

[0009] Preferably, the middle of the partition liner is provided with an arc-shaped recess that fits the busbar, and its overall shape is funnel-shaped.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] This invention features two busbars spirally wound inside a needle-shaped head, eliminating the gap between the busbars and allowing the insulating sleeve to fit tightly against the surface of the busbar insulation layer. This greatly improves insulation performance, reduces the risk of leakage, and ensures electrical safety. At the same time, the tight contact effectively reduces contact resistance, lowers heat loss, and improves power transmission efficiency.

[0012] The insulating sealed end cap and insulating sleeve of this utility model are fixed by internal hex bolts and, together with the clamping structure, enhance the overall stability of the connection, ensuring that the connection between the busbar and the terminal remains reliable when subjected to external force or vibration, and reducing loosening and displacement.

[0013] The partition liner inside the insulating sleeve of this utility model not only helps to fix the position of the busbar, but its arc-shaped concave and funnel-shaped design also facilitates the insertion of the busbar, optimizes the installation process, and improves installation efficiency; moreover, the structural cooperation between the partition liner and the insulating closed end cap further enhances the fixing effect on the busbar and ensures the long-term stability of the electrical connection. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the exploded structure of this utility model.

[0015] Figure 2 This is a half-sectional structural schematic diagram of the present invention.

[0016] Figure 3 This is a schematic diagram of the overall structure of the busbar installation of this utility model.

[0017] In the picture:

[0018] 1. Busbar, 2. Insulated sealed end cap, 3. Threading hole, 4. Insulating sleeve, 5. Needle head, 6. Internal hex bolt, 7. Separator liner. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0020] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for 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 the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0021] As attached Figure 1 To be continued Figure 3 As shown:

[0022] This utility model provides a busbar conductive strip pin-type terminal block, including a busbar 1, an insulating sealed end cap 2, a wire through hole 3, an insulating sleeve 4, a pin-shaped head 5, an internal hex bolt 6, and a separating inner liner 7. Two busbars 1 pass through the wire through hole 3 and the insulating sleeve 4 of the insulating sealed end cap 2 and are inserted into the pin-shaped head 5. The pin-shaped head 5 and the insulating sleeve 4 are heat-fused together. The insulating sealed end cap 2 is fitted onto the insulating sleeve 4 and the two are fixed together by the internal hex bolt 6. The separating inner liner 7 is integrally provided in the middle position of the insulating sleeve 4.

[0023] Furthermore, the stripped ends of the two busbars 1 pass sequentially through the threading hole 3 and the insulating sleeve 4 of the insulating sealed end cap 2, and then into the needle head 5, where they are spirally wound together. The diameter of the threading hole 3 is slightly larger than the outer diameter of the busbar 1 to facilitate the smooth passage of the busbar 1 and to provide a certain positioning function. The needle head 5 is made of copper and is firmly bonded to the insulating sleeve 4 through a hot-melt process, ensuring a tight connection and good insulation performance.

[0024] Furthermore, the outer ring surface of the insulating sleeve 4 is fitted together with the inner ring surface of the insulating sealed end cap 2. The insulating sealed end cap 2 has a side-standing "U"-shaped cross-section, and a through hole 3 is provided on the insulating sealed end cap 2 to allow the two busbars 1 to pass through. Both the insulating sealed end cap 2 and the insulating sleeve 4 are made of flame-retardant engineering plastic, possessing good insulation and mechanical strength. The inner ring size of the side-standing "U"-shaped structure of the insulating sealed end cap 2 precisely matches the outer ring size of the insulating sleeve 4.

[0025] Furthermore, the insulating end cap 2 and the insulating sleeve 4 are made of the same material. The insulating end cap 2 has countersunk holes at its upper and lower positions that match the socket head cap 6. The insulating end cap 2 and the insulating sleeve 4 are made of flame-retardant engineering plastic material, which effectively prevents combustion in the event of high temperatures caused by electrical faults, ensuring electrical safety. The countersunk holes at the upper and lower positions of the insulating end cap 2 have a diameter and depth precisely matched to the head size of the socket head cap 6. The purpose of the countersunk holes is to allow the head of the socket head cap 6 to be completely recessed into the countersunk hole when fixing the insulating end cap 2 and the insulating sleeve 4 with the socket head cap 6, ensuring the flatness of the overall structure and avoiding safety hazards and space occupation caused by protruding bolt heads. It also makes the connection between the insulating end cap 2 and the insulating sleeve 4 tighter and more stable.

[0026] Furthermore, the integrally formed partition liner 7 inside the insulating sleeve 4 has mounting holes corresponding to the countersunk holes of the insulating sealed end cap 2. These mounting holes of the partition liner 7 are matched with hexagon socket head cap bolts 6. The partition liner 7 and the insulating sleeve 4 are integrally molded using an injection molding process, ensuring the reliability and integrity of their connection. The mounting holes on the partition liner 7 correspond perfectly in position and size to the countersunk holes of the insulating sealed end cap 2. When using the hexagon socket head cap bolts 6 for fixing, the bolts 6 pass sequentially through the countersunk holes of the insulating sealed end cap 2 and the mounting holes of the partition liner 7, firmly connecting the insulating sealed end cap 2, the insulating sleeve 4, and the partition liner 7 together. This connection method not only enhances the overall stability of the insulating sleeve 4 but also further fixes the position of the busbar 1 through the partition liner 7, preventing the busbar 1 from shaking or shifting within the insulating sleeve 4, thus ensuring the reliability of the electrical connection.

[0027] Furthermore, the inner partition liner 7 has an arc-shaped recess in the middle that fits the busbar 1, giving it an overall funnel shape. This arc-shaped recess in the middle of the inner partition liner 7 matches the outer contour of the busbar 1. When the busbar 1 passes through the insulating sleeve 4, the arc-shaped recess provides good positioning and support for the busbar 1, ensuring its stable position within the insulating sleeve 4 and preventing problems such as decreased insulation performance and poor electrical connection caused by busbar 1 misalignment. The funnel shape design, with the larger end facing the wire-passing hole 3 of the insulating end cap 2, facilitates the smooth insertion of the busbar 1 into the insulating sleeve 4, reducing installation difficulty and improving installation efficiency. The smaller end, close to the needle-shaped head 5, further gathers and fixes the inserted busbar 1, enhancing the constraint effect on the busbar 1 and ensuring its stability and reliability within the insulating sleeve 4.

[0028] The working principle is as follows: First, the two busbars 1 are passed through the wire holes 3 of the insulating sealed end caps 2 respectively. Then, the ends of the two busbars 1 that need to be crimped are stripped to ensure that the stripping length is sufficient, so that there is still some excess material protruding after the stripped ends of the busbars 1 pass through the insulating sleeves 4 and the needle-shaped heads 5. Then, using this excess material, the stripped ends of the two busbars 1 are spirally wound inside the needle-shaped heads 5. After the winding is tight, the excess stripped ends of the busbars 1 are removed using a cutting tool to ensure that the connection is neat and standardized.

[0029] Next, align the insulating sleeve 4 with the insulating sealed end cap 2, so that the outer ring of the insulating sleeve 4 and the inner ring of the insulating sealed end cap 2 interlock, achieving initial sealing and fixation. Because the inner ring of the U-shaped structure on the side of the insulating sealed end cap 2 is precisely matched with the outer ring of the insulating sleeve 4, the interlocking operation can be completed quickly.

[0030] Finally, using hex bolts 6, pass them sequentially through the countersunk holes at the top and bottom of the insulating end cap 2 and the corresponding mounting holes on the partition liner 7, and tighten the hex bolts 6 to securely connect the insulating end cap 2, the insulating sleeve 4, and the partition liner 7. During this process, the arc-shaped recess in the middle of the partition liner 7, which matches the busbar 1, effectively fixes the position of the busbar 1. Its funnel-shaped, larger end guides the busbar 1 through, while the smaller end further converges and fixes it, ensuring the busbar 1 is stable within the insulating sleeve 4. This achieves a stable and reliable electrical connection between the busbar 1 and the pin-type head 5, as well as good insulation performance and mechanical strength for the overall terminal block.

[0031] Finally, the stripped end of the busbar is tightly crimped together with the needle head 5 using crimping pliers.

[0032] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A busbar conductive strip pin-type terminal, characterized by, The device includes a busbar (1), an insulating sealed end cap (2), a wire hole (3), an insulating sleeve (4), a needle-shaped head (5), an internal hex bolt (6), and a partition liner (7). The two busbars (1) pass through the wire hole (3) and the insulating sleeve (4) of the insulating sealed end cap (2) and are inserted into the needle-shaped head (5). The needle-shaped head (5) and the insulating sleeve (4) are heat-fused together. The insulating sealed end cap (2) is fitted onto the insulating sleeve (4) and the two are fixed together by the internal hex bolt (6). The partition liner (7) is integrally provided in the middle position of the insulating sleeve (4).

2. A pin-type terminal for a busbar conducting strip according to claim 1, characterized in that: The stripped ends of the two busbars (1) pass through the wire hole (3) and insulating sleeve (4) of the insulating closed end cap (2) in sequence, and are inserted into the needle head (5), where they are spirally wound together.

3. A pin-type terminal for a busbar strip conductor strip of a busbar arrangement according to claim 2, characterized in that: The outer ring surface of the insulating sleeve (4) is fitted together with the inner ring surface of the insulating closed end cap (2). The cross-section of the insulating closed end cap (2) is a side-standing "U" shaped structure. The insulating closed end cap (2) has a through hole (3) that allows two busbars (1) to pass through.

4. A pin-type terminal for a busbar strip conductor strip of a busbar arrangement according to claim 3, characterized in that: The insulating end cap (2) and the insulating sleeve (4) are made of the same material. The insulating end cap (2) has countersunk holes that match the internal hexagonal bolts (6) through its upper and lower positions.

5. A pin-type terminal for a busbar conducting strip according to claim 4, characterized in that: The insulating sleeve (4) has an integrally formed partition liner (7) with mounting holes corresponding to the countersunk holes of the insulating closed end cap (2). The mounting holes of the partition liner (7) are matched with the internal hex bolts (6).

6. A pin-type terminal for a busbar conducting strip according to claim 5, characterized in that: The partition liner (7) has an arc-shaped recess in the middle that matches the busbar (1), and its overall shape is funnel-shaped.

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