A spliceable electrical secondary circuit hub

Abstract

The application discloses a splicable electrical secondary circuit concentrator, which comprises a T-shaped flow guide piece, the T-shaped flow guide piece is wrapped in an insulating shell, a left side interface and a right side interface are in a mortise and tenon structure and are fixed by a semi-insulating conductive screw; a vertical section of the T-shaped flow guide piece is fixed through a spring locking structure and is aligned with a reserved hole of the insulating shell; a customized fuse is arranged on the vertical section of the T-shaped flow guide piece; the T-shaped vertical section is crimped through the spring locking structure and a customized fuse and a crimp-free terminal; the lowermost end of the T-shaped flow guide piece is provided with an embedded thread with the same diameter and is connected with the crimp-free part through a connecting bolt. The concentrator can be freely spliced according to actual needs, ensures that each wire core is connected to and from only one most suitable terminal, and can be independently taken out without disassembly, so that the troubleshooting of a fault point is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of electric secondary circuit connection, in particular to a splicable electric secondary circuit hub. Background Art

[0002] The national standard stipulates that each side of each terminal of the electrical secondary circuit should have one wire and no more than two wires. However, due to limited conditions in production practice, multiple wires of different diameters, single-strand and multi-strand wires, soft and hard wires, etc. need to be connected to and connected to the same terminal. The usual practice is to crimp them on the same wire nose, but because the secondary circuit is not independent, it needs to be disassembled again when troubleshooting, and it is easy to loosen, have poor contact, and generate heat during operation. It is necessary to develop a splicable electrical secondary circuit hub that can be freely spliced ​​according to actual needs to ensure that each wire core is only connected to and connected to the most suitable terminal, and any wire core can be separated without disassembly, which is convenient for troubleshooting. Summary of the Invention

[0003] The purpose of the present invention is to provide a splicable electrical secondary circuit hub that can be freely spliced ​​according to actual needs, ensuring that each wire core is only connected to and connected to a most suitable terminal, and any wire core can be independently extracted without disassembly, which is convenient for troubleshooting.

[0004] The technical solution of the present invention is a splicable electrical secondary circuit hub, which is characterized in that the hub is a multi-level unit combination structure, each basic unit includes a T-shaped guide plate, the T-shaped guide plate is wrapped in an insulating shell, the left interface and the right interface are mortise and tenon structures, and are fixed with semi-insulating conductive screws; the vertical section of the T-shaped guide plate is fixed by a spring locking structure, and each has a test observation hole aligned with the reserved hole of the insulating shell; a customized fuse is provided on the vertical section of the T-shaped guide plate; the T-shaped vertical section is crimped with the crimp-free terminal through the customized fuse through the spring locking structure; the lower end of the T-shaped guide plate is provided with an embedded thread of the same diameter, which is connected to the crimp-free part through a connecting bolt; the main copper conductor part of the crimp-free part is interconnected with the T-shaped guide plate through a connecting bolt, and an aluminum terminal adapted to different wire diameters is provided inside. The wire core to be connected is inserted into the aluminum terminal and is tightened by two symmetrical sets of tightening conductive screws.

[0005] Furthermore, the left and right sides of the T-shaped guide plate are symmetrical with each other and can be used independently or spliced ​​with the T-shaped guide plate of another unit and fixed through the conductive bolt fastening holes using two semi-insulated conductive screws to form a multi-level unit combination structure.

[0006] Furthermore, the upper portion of the semi-insulating conductive screw is an insulating structure and can be in direct contact with the insulating shell.

[0007] Furthermore, the insulating shell is provided with a dust cover package, and only the test observation hole and the conductive bolt fastening hole are connected to the outside world.

[0008] The present invention has the following advantages:

[0009] 1. The device has a built-in three-way copper conductor T-shaped guide plate, which is wrapped in an insulating shell. The left and right interfaces are mortise and tenon structures. The left and right sides are symmetrical with each other. They can be used independently or spliced ​​with the T-shaped guide plate of another unit (left and right, up and down). They are fixed with two semi-insulated conductive screws to form a multi-level unit combination structure.

[0010] 2. The vertical section of the T-shaped guide plate is crimped with a customized fuse and a crimp-free terminal through a spring locking structure. It is suitable for a variety of wire diameters and types from 0.08 to 10 mm2. It can be spliced ​​as needed. No additional wiring nose is required for wiring, and the contact is reliable, which is very convenient and practical.

[0011] 3. Customized fuses can realize the on-off of specific branches and serve as test holes. Without power outages, any secondary circuit can be independently tested or released according to on-site needs, facilitating fault detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the unit structure of the present invention;

[0013] Figure 2 It is a schematic diagram of the connection structure of multiple units of the present invention;

[0014] Figure 3 This is a schematic diagram of the structure of the non-pressing joint part of the present invention;

[0015] Explanation of the accompanying drawings: T-shaped guide plate 1, test observation hole 2, spring locking structure 3, customized insurance 4, embedded thread 5, semi-insulated conductive screw 6, connecting bolt 7, tightening conductive screw 8, pressure-free aluminum terminal 9, wire core 10, conductive bolt fastening hole 11, insulating shell 12. DETAILED DESCRIPTION

[0016] The following combination Figures 1 to 3 , a splicable electrical secondary circuit hub of the present invention is described in detail, such as Figure 1 、 Figure 2 As shown, the hub is a multi-level unit combination structure, and each basic unit includes an insulating shell 12, a T-shaped guide plate 1, a customized fuse 4, a pressure-free aluminum terminal 9, and a spring locking structure 3.

[0017] The left and right sides of the T-shaped guide plate 1 are symmetrical and can be used independently or spliced ​​with the T-shaped guide plate of another unit (left and right, top and bottom). They are fixed with two semi-insulated conductive screws 6 to form a multi-level unit assembly structure. The upper portion of the semi-insulated conductive screw 6 is an insulating structure that can directly contact the insulating shell 12.

[0018] The vertical section of the T-shaped guide plate 1 is connected to the customized fuse 4. The size of the customized fuse 4 fits the shape of the conductor and has a special structure. It has arc extinguishing ability and can interrupt a certain load current. The customized fuse can realize the on and off of a specific branch and serve as a test hole. Without stopping the power, any secondary circuit can be independently tested or released according to on-site needs, which is convenient for fault detection.

[0019] The vertical section of the T-shaped guide plate 1 is fixed by a spring locking structure 3, and each has a test observation hole 2 aligned with the reserved hole of the insulating shell. The spring locking structure 3 is made of fully insulating material, is non-conductive, has a certain pressure torque, plays the role of fixed support and buffer, and can prevent the influence of vibration and thermal expansion and contraction.

[0020] The lowermost end of the T-shaped guide plate 1 is provided with an embedded thread 5 of the same diameter, which can be connected to the pressure-free part by a connecting bolt 7.

[0021] The non-pressing part is as follows Figure 3 As shown, the main copper conductor part is interconnected with the T-shaped guide plate 1 through the connecting bolt 7, and an aluminum terminal 9 suitable for different wire diameters is set inside. The wire core 10 to be connected is inserted into the aluminum terminal 9 and is tightened by two symmetrical sets of tightening conductive screws 8. After tightening, it plays a fixing and supporting role, and removal or loosening will not affect the contact effect.

[0022] When wiring multiple strands of soft wire, the present invention does not require additional wiring noses and crimping tools. It only requires peeling off the insulation according to the wire diameter and type of the wire core, inserting the customized aluminum terminal 9, and tightening the four clamping conductive screws 8. This is very practical.

[0023] The insulating shell 12 is encapsulated with a nylon dust cover, and only the test observation hole 2 and the conductive bolt fastening hole 11 are connected to the outside world. All conductive parts are encapsulated as a whole according to the structure after the unit structure is combined. It has the characteristics of flame retardancy, high temperature resistance and corrosion resistance, and can prevent harmful gases, dust, water vapor, etc. from entering the interior of the hub.

[0024] The present invention has strong adaptability when applied and can be widely used in technical transformation and expansion projects. It can effectively solve the technical problem of connecting one terminal to one wire when the on-site terminal block is insufficient. The safety and reliability of the wiring will be greatly improved, avoiding safety accidents caused by false connection of terminals.

[0025] When the present invention is used, the contact reliability of each branch connection line can be tested without cutting off the power to the secondary circuit. When an abnormality is found, there is no need to disconnect the control power supply. Only the customized fuse needs to be disconnected to isolate the specific branch. Any wire core can be isolated without an overall power outage, which reduces the scope of the fault impact and facilitates the troubleshooting of the fault point.

[0026] The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present invention should be covered by the scope of protection of the present invention.

Claims

1. A splicable electrical secondary circuit hub, including a crimp-free part, characterized in that: The hub is a multi-level unit combination structure, each basic unit includes a T-shaped guide plate (1), the T-shaped guide plate (1) is wrapped in an insulating shell (12), the left interface and the right interface are mortise and tenon structures, and are fixed with semi-insulated conductive screws (6); the vertical section of the T-shaped guide plate (1) is fixed by a spring locking structure (3), and each has a test observation hole (2) aligned with the reserved hole of the insulating shell; a customized insurance (4) is provided on the vertical section of the T-shaped guide plate (1); the T-shaped vertical section is fixed by a customized insurance (4) is crimped with the crimp-free terminal through a spring locking structure (3); the lower end of the T-shaped guide plate (1) is provided with an embedded thread (5) of the same diameter, which is connected to the crimp-free part through a connecting bolt (7); the main copper conductor part of the crimp-free part is interconnected with the T-shaped guide plate (1) through the connecting bolt (7), and an aluminum terminal (9) adapted to different wire diameters is provided inside, and the wire core (10) to be connected is inserted into the aluminum terminal (9) and is tightened by two symmetrical sets of tightening conductive screws (8).

2. A splicable electrical secondary circuit hub according to claim 1, characterized in that: The left and right sides of the T-shaped guide plate (1) are symmetrical with each other and can be used independently or spliced ​​with the T-shaped guide plate of another unit and fixed by two semi-insulated conductive screws (6) through the conductive bolt fastening holes (11) to form a multi-level unit combination structure.

3. A splicable electrical secondary circuit hub as claimed in claim 2, characterized in that: The upper portion of the semi-insulating conductive screw (6) is an insulating structure and can be in direct contact with the insulating housing (12).

4. A splicable electrical secondary circuit hub as claimed in claim 3, characterized in that: The insulating housing (12) is provided with a dust cover package, and only the test observation hole (2) and the conductive bolt fastening hole (11) are connected to the outside world.

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