CN213635651U

CN213635651U - Portable mutual inductor terminal head

Info

Publication number: CN213635651U
Application number: CN202022985590.1U
Authority: CN
Inventors: 杨红青; 王建超; 朱卫国; 陈明; 朱岫柠; 宋亚美
Original assignee: State Grid Corp of China SGCC; State Grid Beijing Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; State Grid Beijing Electric Power Co Ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-07-06
Anticipated expiration: 2030-12-11

Abstract

The utility model discloses a portable mutual inductor terminal head, which comprises an insulator, a pressing piece, a conductor part and a connecting conductor, wherein, a gap is arranged in the insulator, the conductor part is positioned in the gap, and a wire core at the end part of a wire is inserted into the gap and is electrically connected with the conductor part; the pressing piece is inserted into the gap and then presses the wire and the conductor part, the end part of the connecting conductor is inserted into the gap and then connected with the conductor part, the wiring terminal head prevents electricity stealing, the structure is simple, and the work efficiency of maintainers is high.

Description

Portable mutual inductor terminal head

Technical Field

The utility model relates to a terminal head, concretely relates to portable mutual-inductor terminal head.

Background

Three groups of current transformers are used in the wiring of a three-phase four-wire electric energy meter for electric energy metering, two groups of current transformers are used in the wiring of the three-phase three-wire electric energy meter, and a voltage transformer is also needed if high-voltage metering is available. Because electricity stealing users mostly steal electricity by utilizing voltage disconnection and current transformer secondary line short circuit, the loss of electric energy metering is caused, and especially, short-circuit line electricity stealing is added at a current transformer wiring terminal, and voltage transformer secondary line disconnection is also a common method for electricity stealing.

At present, most of the existing patents are cover body type devices and complex current transformer terminal outward moving devices. The cover body generally forms a hemispherical connection cover by a current transformer connection seat and a connection plate connected with a current transformer. A plurality of jacks are arranged on the outer side surface of the annular protective cover, and a ventilation window is arranged on the annular protective cover and is provided with a ventilation filter screen. The wiring terminals of the current transformer are completely closed and can be opened during inspection, a protective cover is added to the current transformer, and therefore electricity stealing and ventilation can be prevented. The other current transformer wiring terminal outward moving device is an assembling device and comprises a transformer assembling base, assembling and fixing dies at all levels arranged on the transformer assembling base and adjusting bolts. The wiring terminal is moved outwards by building the multi-stage die, and the hollow groove is adjusted to perform micro adjustment, so that the mutual inductor is protected.

The defects of the prior similar patent technologies are mainly two:

first, some patents have resorted to the design of protective covers at the connection sites to prevent theft of electricity by the user. The method can increase the operation steps of workers, and the workers can bend the lead into the claw ring closest to the circumference of the bolt after the standard completion and then detect whether the safety of the protective cover falls off or is aged, so that the installation and maintenance work is complicated. The electricity stealing users can easily destroy the protective cover and occupy a large space.

Secondly, some techniques use insulation wrapping at the connections, but the terminal removal steps are complicated and reduce the efficiency of the service personnel.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned prior art's shortcoming, provide a handy mutual-inductor terminal head, this terminal head prevents to steal the electric action, simple structure, and maintainer work efficiency is high.

In order to achieve the purpose, the portable mutual inductor wiring terminal head comprises an insulator, a pressing piece, a conductor part and a connecting conductor, wherein a gap is arranged in the insulator, the conductor part is positioned in the gap, and a wire core at the end part of a wire is inserted into the gap and is electrically connected with the conductor part;

the pressing piece is inserted into the gap and then presses the wire and the conductor part, and the end part of the connecting conductor is inserted into the gap and then connected with the conductor part.

The anti-return spring piece is arranged in the gap, one end of the anti-return spring piece is fixed on the inner wall of the gap, and the other end of the anti-return spring piece is pressed on the lead.

The side wall of the insulator is provided with a first through hole, and an insulation plugging shifting piece used for pushing the pressure anti-withdrawal spring piece is inserted into the first through hole.

The side of the insulator is provided with a second through hole for the lead to pass through.

The bottom of the insulator is provided with a third through hole for passing the connection conductor.

The top of the insulator is provided with a threaded hole for the compression member to pass through.

The compressing piece is provided with a limiting block, wherein the limiting block is positioned in the gap.

The pressing piece is perpendicular to the lead.

The connecting conductor is perpendicular to the conductor member.

The utility model discloses following beneficial effect has:

portable mutual-inductor terminal head when concrete operation, peel off the insulating layer of wire, insert the sinle silk in the space again, then press and compress tightly the piece and make the wire can not extract, whole electrified part all is located the space, the security is higher, compresses tightly through compressing tightly the piece simultaneously, prevents to steal the electric action, simple structure, maintainer work efficiency is high.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Wherein, 1 is a pressure anti-retreat spring plate, 2 is a gap, 3 is a pressing piece, 4 is an insulation plug pull plate, 5 is a lead, 6 is a wire core, 7 is a connecting conductor, 8 is a conductor part, and 9 is an insulator.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings:

referring to fig. 1, the portable terminal connector of the transformer of the present invention includes an insulator 9, a pressing member 3, a conductor portion 8 and a connecting conductor 7, wherein a gap 2 is provided in the insulator 9, the conductor portion 8 is located in the gap 2, and a core 6 at an end of a wire 5 is inserted into the gap 2 and electrically connected to the conductor portion 8; the pressing member 3 is inserted into the space 2 to press the lead 5 and the conductor portion 8, and the end of the connecting conductor 7 is inserted into the space 2 to be connected to the conductor portion 8.

The utility model discloses still including setting up the pressure in space 2 and preventing moving back shell fragment 1, wherein, on the one end that pressure prevented moving back shell fragment 1 was fixed in space 2's inner wall, the other end that pressure prevented moving back shell fragment 1 was pressed on wire 5.

A first through hole is formed in the side wall of the insulator 9, and an insulation plugging shifting piece 4 used for pushing the pressure anti-withdrawal spring piece 1 is inserted into the first through hole; the side surface of the insulator 9 is provided with a second through hole for the lead 5 to pass through; the bottom of the insulator 9 is provided with a third through hole for the connection conductor 7 to pass through; the top of the insulator 9 is provided with a threaded hole for the passage of the compression member 3.

A limiting block is arranged on the pressing piece 3, wherein the limiting block is positioned in the gap 2; the pressing piece 3 is vertical to the lead 5; the connecting conductor 7 is perpendicular to the conductor member.

When using, peel off the insulating layer of wire 5, insert sinle silk 6 in space 2 again, then press and compress tightly piece 3 and make wire 5 can not extract, wherein, when inserting, upwards lift up pressure anti-retreat shell fragment 1, reserve suitable width and make wire 5 get into to pressure anti-retreat shell fragment 1 can increase frictional force, reduces the condition of wire 5 roll-off. In addition, the pressure anti-back-off elastic sheet 1 can enable the wire core 6 to be completely attached to the conductor part 8 in the vertical direction. The sinle silk 6 contacts and screws up the piece 3 that compresses tightly through external force when 8 rightmost ends in conductor position for sinle silk 6 is fixed completely, and the external packing of connecting terminal is made by light insulator 9 material, compares with traditional gimmick, the utility model discloses very big reduction the potential safety hazard that wire 5 exposes the reduction, because the material that the terminal surface does not have the electric conduction, this makes the idea that the electricity was stolen through the electric energy meter short circuit and electricity do not have from the lower hand.

When the lead 5 is damaged and needs to be replaced, the pressing piece 3 is firstly screwed out by 2-3 mm, and then a straight screwdriver is used for applying pressure to the inner part of the insulating plug sheet, so that the pressure anti-return spring sheet 1 is upwards bounced, and the lead 5 can be pulled out. The contact position of the insulating plug sheet and the pressure anti-return spring sheet 1 is made of a malleable insulating material.

Finally, the utility model has small volume and convenient carrying; when in use, the operation is simple, and only common tools are needed; the electricity stealing can be prevented, and the potential safety hazard formed by a private circuit of a user is avoided; by adopting an insertion type wiring method, the time delay caused by the fact that the conducting wire 5 is difficult to bend into a uniform-specification cavel ring is avoided during wiring, the working difficulty of skilled personnel can be reduced, and the working efficiency is improved; the whole body has no metal exposure, the electricity utilization safety is improved, and especially, the user safety is guaranteed.

Claims

1. A portable mutual inductor terminal head is characterized by comprising an insulator (9), a pressing piece (3), a conductor part (8) and a connecting conductor (7), wherein a gap (2) is formed in the insulator (9), the conductor part (8) is positioned in the gap (2), and a wire core (6) at the end part of a wire (5) is inserted into the gap (2) and is electrically connected with the conductor part (8);

the pressing piece (3) is inserted into the gap (2) and then presses the lead (5) and the conductor part (8), and the end part of the connecting conductor (7) is inserted into the gap (2) and then connected with the conductor part (8).

2. The portable mutual inductor terminal block according to claim 1, further comprising a pressure anti-back spring (1) disposed in the gap (2), wherein one end of the pressure anti-back spring (1) is fixed to an inner wall of the gap (2), and the other end of the pressure anti-back spring (1) is pressed against the wire (5).

3. The portable mutual inductor terminal block as claimed in claim 1, wherein the side wall of the insulator (9) is provided with a first through hole, and an insulation plug pull tab (4) for pushing the pressure anti-back spring plate (1) is inserted into the first through hole.

4. The portable transformer connection terminal head according to claim 1, characterized in that the side of the insulator (9) is provided with a second through hole for passing the wire (5).

5. The portable transformer connection terminal head according to claim 1, characterized in that the bottom of the insulator (9) is provided with a third through hole for passing the connection conductor (7).

6. The portable transformer terminal block according to claim 1, characterized in that the top of the insulator (9) is provided with a screw hole for passing the compression member (3).

7. The portable mutual inductor terminal block according to claim 1, wherein the pressing member (3) is provided with a limiting block, and the limiting block is located in the gap (2).

8. The portable transformer terminal lug of claim 1, characterized in that the hold-down member (3) is perpendicular to the wires (5).

9. The portable transformer terminal lug of claim 1, characterized in that the connection conductor (7) is perpendicular to the conductor member.