CN215680353U

CN215680353U - Current transformer

Info

Publication number: CN215680353U
Application number: CN202122444538.XU
Authority: CN
Inventors: 秦晓瓯
Original assignee: Zhikai Electric Technology Co ltd
Current assignee: Zhikai Electric Technology Co ltd
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2022-01-28
Anticipated expiration: 2031-10-12

Abstract

The utility model provides a current transformer which comprises a base, wherein a connecting box is arranged on one side of the base, a telescopic mechanism is connected inside the connecting box, one end of the telescopic mechanism is connected with a clamping mechanism, the clamping mechanism is mutually connected with the base, the top of the base is provided with the transformer, an insulating gasket is arranged on the outer surface of the transformer, and rotating mechanisms are arranged on two sides of the transformer. This current transformer is connected and the extrusion of expanding spring to the movable rod through the block between movable rod and the current conducting plate for electric wire and current transformer's junction is inseparabler, and the sliding connection of movable rod and connection box also is favorable to simplifying electric wire and current transformer's connected mode, and the setting of commentaries on classics piece and sponge piece not only can fix a position the electric wire simultaneously, still is favorable to protecting the electric wire.

Description

Current transformer

Technical Field

The utility model relates to the technical field related to electric power safety detection, in particular to a current transformer.

Background

The current transformer is an instrument for converting a large primary side current into a small secondary side current according to the electromagnetic induction principle to measure, consists of a closed iron core and a winding, has few primary side winding turns, is connected in a circuit of a current to be measured in series, and can reduce danger generated during measurement through the current transformer, so that the current transformer is particularly needed.

However, in the process of installing the current transformer, the current transformer needs to be connected with the wire group, the current transformer is only simply connected through threads to fix the wires, the phenomena of falling and inaccurate measurement are easily caused, and meanwhile, the wire group cannot be fixed when penetrating through the current transformer, so that the protection and arrangement of the wire group are not facilitated.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a current transformer, so as to solve the problems that in the current transformer in the prior art, a wire group needs to be connected to the current transformer during the installation of the current transformer, the current transformer is simply screwed to fix a wire, which is prone to dropping off and inaccurate measurement, and the wire group cannot be fixed when passing through the current transformer, which is not beneficial to protecting and arranging the wire group.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a current transformer, includes the base, one side of base is provided with the connecting box, the internal connection of connecting box has telescopic machanism, telescopic machanism's one end is connected with block mechanism, block mechanism and base interconnect, the top of base is provided with the mutual-inductor, the surface of mutual-inductor is provided with insulating gasket, the both sides of mutual-inductor are provided with rotary mechanism.

Preferably, rotary mechanism includes movable rod, baffle, pull rod, expanding spring and bottom block, the movable rod has been run through to the inside of connecting box, the welding of one side of movable rod has the baffle, one side fixedly connected with pull rod of baffle, the one end winding of movable rod is connected with expanding spring, expanding spring's one end welding has the bottom block, bottom block and movable rod fixed connection.

Preferably, the movable rod passes through expanding spring and baffle and connecting box sliding connection, the size of baffle is greater than the size of connecting box trompil.

Preferably, the clamping mechanism comprises a clamping groove, a positioning block and a current-conducting plate, the clamping groove is formed in the bottom of the movable rod, the positioning block is clamped in the clamping groove, and one side of the positioning block is fixedly connected with the current-conducting plate.

Preferably, the mutual inductor is connected with the base in a welding mode, and insulating gaskets are installed on the outer surface of the mutual inductor at equal intervals.

Preferably, rotary mechanism includes connecting axle, first rotor, second rotor, compression spring and sponge piece, one side of mutual-inductor is inlayed and is had the connecting axle, the surface winding of connecting axle has compression spring, compression spring's both ends are laminated with first rotor and second rotor respectively each other, first rotor and second rotor have been cup jointed to the surface of connecting axle, the one end fixed mounting of first rotor and second rotor has the sponge piece.

Preferably, the first rotor plate and the second rotor plate form a rotating structure through a connecting shaft and a compression spring, and the first rotor plate and the second rotor plate are symmetrically arranged about a center line of the transformer.

Compared with the prior art, the utility model has the beneficial effects that: this current transformer is connected and the extrusion of expanding spring to the movable rod through the block between movable rod and the current conducting plate for electric wire and current transformer's junction is inseparabler, and the sliding connection of movable rod and connection box also is favorable to simplifying electric wire and current transformer's connected mode, and the setting of commentaries on classics piece and sponge piece not only can fix a position the electric wire simultaneously, still is favorable to protecting the electric wire.

Drawings

FIG. 1 is a schematic side view of the present invention;

FIG. 2 is a schematic view of the connection structure of the connection box and the movable block;

FIG. 3 is a schematic view of the connecting structure of the movable rod and the conductive plate according to the present invention;

FIG. 4 is a schematic view of the interconnection structure of the first rotary plate and the second rotary plate according to the present invention;

FIG. 5 is a schematic view of the connection structure of the connecting shaft and the compression spring according to the present invention.

In the figure: 1. a base; 2. a connection box; 3. a telescoping mechanism; 301. a movable rod; 302. a partition plate; 303. a pull rod; 304. a tension spring; 305. a bottom block; 4. a clamping mechanism; 401. a card slot; 402. positioning blocks; 403. a conductive plate; 5. a transformer; 6. an insulating spacer; 7. a rotation mechanism; 701. a connecting shaft; 702. a first rotor; 703. a second rotor; 704. a compression spring; 705. a sponge block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: the utility model provides a current transformer, includes base 1, and one side of base 1 is provided with connecting box 2, and the internal connection of connecting box 2 has telescopic machanism 3, and telescopic machanism 3's one end is connected with block mechanism 4, and block mechanism 4 and base 1 interconnect, the top of base 1 are provided with mutual-inductor 5, and the surface of mutual-inductor 5 is provided with insulating gasket 6, and the both sides of mutual-inductor 5 are provided with rotary mechanism 7.

Further, the rotating mechanism 7 comprises a movable rod 301, a partition 302, a pull rod 303, a telescopic spring 304 and a bottom block 305, the movable rod 301 penetrates through the connecting box 2, the partition 302 is welded on one side of the movable rod 301, the pull rod 303 is fixedly connected on one side of the partition 302, the telescopic spring 304 is wound and connected on one end of the movable rod 301, the bottom block 305 is welded on one end of the telescopic spring 304, the bottom block 305 is fixedly connected with the movable rod 301, through the arrangement of the movable rod 301, the partition 302, the pull rod 303, the telescopic spring 304 and the bottom block 305, wherein the pushing pull rod 303 can drive the movable rod 301 to slide in the connecting box 2, thereby be convenient for movable rod 301 and conductive plate 403 to be connected, be favorable to pressing from both sides tight electric wire, the distance between baffle 302 and the bottom block 305 is exactly the sliding range of movable rod 301, and expanding spring 304 has guaranteed that movable rod 301 can kick-back after the extension.

Further, movable rod 301 passes through expanding spring 304 and

baffle

302 and 2 sliding connection of connecting box, the size of baffle 302 is greater than the size of the 2 trompils of connecting box, through movable rod 301, baffle 302 and expanding spring 304's setting, wherein movable rod 301 can be consolidated being connected between electric wire and the current transformer through expanding spring 304's elasticity, prevent that the electric wire from droing, baffle 302 has guaranteed that movable rod 301 can not contract and has advanced connecting box 2, the home range of movable rod 301 has been restricted.

Further, block mechanism 4 includes draw-in groove 401, locating piece 402 and conducting plate 403, draw-in groove 401 has been seted up to the bottom of movable rod 301, the inside block of draw-in groove 401 has locating piece 402, one side and conducting plate 403 fixed connection of locating piece 402, through draw-in groove 401, the setting of locating piece 402 and conducting plate 403, with the coiled snare of wire end on locating piece 402, movable rod 301 can be connected the electric coil centre gripping with conducting plate 403 laminating in the middle of, thereby be convenient for connect the electric wire, avoid the electric wire to produce and drop.

Further, mutual-inductor 5 and base 1 welded connection, 5 equidistant installing of mutual-inductor surface have insulating pad 6, through base 1 and insulating pad 6's setting, wherein base 1 provides the assurance with stable for mutual-inductor 5's installation, and insulating pad 6 can effectively prevent to produce the condition of electrocuteeing in the installation to current transformer.

Further, the rotating mechanism 7 comprises a connecting shaft 701, a first rotating piece 702, a second rotating piece 703, a compression spring 704 and a sponge block 705, the connecting shaft 701 is embedded at one side of the mutual inductor 5, the compression spring 704 is wound on the surface of the connecting shaft 701, two ends of the compression spring 704 are respectively attached to the first rotating piece 702 and the second rotating piece 703, the first rotating piece 702 and the second rotating piece 703 are sleeved on the outer surface of the connecting shaft 701, the sponge block 705 is fixedly installed at one end of the first rotating piece 702 and one end of the second rotating piece 703, through the arrangement of the connecting shaft 701, the first rotating piece 702, the second rotating piece 703, the compression spring 704 and the sponge block 705, wherein the first rotating plate 702 and the second rotating plate 703 can rotate through the connecting shaft 701, the compression spring 704 can make the first rotating plate 702 and the second rotating plate 703 tightly attached, therefore, the effect of positioning the electric wire is achieved, and the sponge block 705 can prevent the first rotating sheet 702 and the second rotating sheet 703 from damaging the electric wire.

Further, the first rotating piece 702 and the second rotating piece 703 form a rotating structure through the connecting shaft 701 and the compression spring 704, the first rotating piece 702 and the second rotating piece 703 are symmetrically arranged about the center line of the current transformer 5, and the first rotating piece 702, the second rotating piece 703 and the compression spring 704 are connected in series through the arrangement of the first rotating piece 702, the connecting shaft 701, the compression spring 704 and the second rotating piece 703, so that the first rotating piece 702 and the second rotating piece 703 can be continuously attached after being separated, the electric wire can be kept at a middle position after being fixed through the symmetrical arrangement of the first rotating piece 702 and the second rotating piece 703, and the deviation of the measurement result of the current transformer is prevented.

The working principle is as follows: firstly, when the electric wire is connected with the mutual inductor 5, the head of the electric wire is bent to be wound into a ring, the pull rod 303 is pulled to enable the pull rod 303 to drive the movable rod 301 to slide in the connecting box 2 until the bottom block 305 is separated from the positioning block 402, then the coil is stretched into the connecting box 2 to enable the electric coil to be sleeved in the positioning block 402, then the pull rod 303 is loosened to enable the telescopic spring 304 to push the clamping groove 401 formed at the bottom of the movable rod 301 to be clamped with the positioning block 402 through the bottom block 305, meanwhile, the bottom of the movable rod 301 and the conductive plate 403 clamp the electric coil, so that the connection work of the electric wire and the mutual inductor 5 is completed, the movable rod 301 and the positioning block 402 can be driven to be separated by reversely pulling the pull rod 303, so that the electric wire and the mutual inductor 5 can be separated, when the electric wire is stretched into the mutual inductor 5, the first rotary piece 702 and the second rotary piece 703 are separated through extrusion on the first rotary piece 702 and the second rotary piece 703, the electric wire is passed through the first rotating piece 702 and the second rotating piece 703, and then the first rotating piece 702 and the second rotating piece 703 are closed again by the connecting shaft 701 due to the pressure of the compression spring 704, and the electric wire is fixed, wherein the sponge block 705 can ensure that the electric wire is not damaged, and thus the current transformer is completed.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A current transformer, includes base (1), its characterized in that: one side of base (1) is provided with connecting box (2), the internal connection of connecting box (2) has telescopic machanism (3), the one end of telescopic machanism (3) is connected with block mechanism (4), block mechanism (4) and base (1) interconnect, the top of base (1) is provided with mutual-inductor (5), the surface of mutual-inductor (5) is provided with insulating gasket (6), the both sides of mutual-inductor (5) are provided with rotary mechanism (7).

2. The current transformer according to claim 1, wherein the rotating mechanism (7) comprises a movable rod (301), a partition plate (302), a pull rod (303), a telescopic spring (304) and a bottom block (305), the movable rod (301) penetrates through the inside of the connecting box (2), the partition plate (302) is welded on one side of the movable rod (301), the pull rod (303) is fixedly connected on one side of the partition plate (302), the telescopic spring (304) is wound and connected on one end of the movable rod (301), the bottom block (305) is welded on one end of the telescopic spring (304), and the bottom block (305) is fixedly connected with the movable rod (301).

3. A current transformer according to claim 2, characterized in that said movable rod (301) is slidably connected to the connection box (2) through a telescopic spring (304) and a partition (302), said partition (302) having a size larger than the size of the opening of the connection box (2).

4. The current transformer according to claim 2, wherein the clamping mechanism (4) comprises a clamping groove (401), a positioning block (402) and a conductive plate (403), the clamping groove (401) is formed at the bottom of the movable rod (301), the positioning block (402) is clamped inside the clamping groove (401), and one side of the positioning block (402) is fixedly connected with the conductive plate (403).

5. The current transformer according to claim 1, characterized in that the transformer (5) is welded to the base (1), and insulating spacers (6) are mounted on the outer surface of the transformer (5) at equal intervals.

6. The current transformer according to claim 1, wherein the rotating mechanism (7) comprises a connecting shaft (701), a first rotating piece (702), a second rotating piece (703), a compression spring (704) and a sponge block (705), the connecting shaft (701) is embedded in one side of the transformer (5), the compression spring (704) is wound on the surface of the connecting shaft (701), two ends of the compression spring (704) are respectively attached to the first rotating piece (702) and the second rotating piece (703), the first rotating piece (702) and the second rotating piece (703) are sleeved on the outer surface of the connecting shaft (701), and the sponge block (705) is fixedly mounted at one end of each of the first rotating piece (702) and the second rotating piece (703).

7. A current transformer according to claim 6, characterized in that the first rotor (702) and the second rotor (703) form a rotary structure through a connecting shaft (701) and a compression spring (704), and the first rotor (702) and the second rotor (703) are symmetrically arranged about the center line of the transformer (5).