CN111554487A

CN111554487A - Current transformer with convenient plug

Info

Publication number: CN111554487A
Application number: CN202010430702.9A
Authority: CN
Inventors: 盛睿; 陶成法; 吴书能; 叶道坤; 吴义汉; 彭海珍
Original assignee: Anhui Huaneng Electric Appliance Group Co ltd
Current assignee: Anhui Huaneng Electric Appliance Group Co ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-08-18

Abstract

The invention relates to a current transformer with a convenient plug, which comprises an insulating shell with a grounding base, an iron core arranged in the insulating shell, a primary winding and a secondary winding which are arranged on the iron core, wherein insulating resin is poured in the insulating shell, a wire holder which is correspondingly connected with the primary winding and the secondary winding is arranged on the insulating shell, and a quick sliding and inserting component which is symmetrically distributed, is clamped with an external wire connector after being relatively slidably abutted is arranged inside the wire holder so as to realize quick insertion and fixation of the external wire connector. Compared with the prior art, the current transformer is quick to install, convenient to use and reliable in fixation, an original wiring terminal is replaced by a wiring seat with a slot, and a quick sliding and inserting component which can clamp and fix an external wiring terminal through relative sliding and abutting is arranged in the wiring seat, so that the problems that the existing current transformer is low in installation efficiency, long in time consumption, high in labor intensity, complex in dismounting and the like are solved.

Description

Current transformer with convenient plug

Technical Field

The invention relates to the technical field of power equipment, in particular to a current transformer with a convenient plug.

Background

The current transformer is composed of a closed iron core and a winding. The primary winding of the transformer has few turns and is connected in series in a circuit of current to be measured, so that the transformer usually has all current of the circuit flowing through, and the secondary winding has more turns and is connected in series in a measuring instrument and a protection loop. Along with the rapid development of society, production and efficiency requirement constantly improve, there is the installation inefficiency in the bolt-nut connected mode of current transformer on the tradition, consuming time long, intensity of labour is big, the loaded down with trivial details scheduling problem of dismouting.

Disclosure of Invention

In order to solve the technical problem, the invention provides a current transformer with a convenient plug.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

the utility model provides a current transformer with convenient plug, including the insulating casing that has the ground connection base, set up iron core, primary winding and the secondary winding of setting on the iron core in the insulating casing, the pouring has insulating resin in the insulating casing, be equipped with the wire holder of being connected with primary winding, secondary winding correspondence on the insulating casing, the inside of wire holder is equipped with and is symmetric distribution and relative slip to close back and external connector lug block to realize that external connector lug inserts fixed swift smooth component of inserting fast.

Furthermore, the top of the wire holder is provided with a slot matched with an external wire connector, and the quick sliding insertion components are symmetrically distributed on two sides of the slot.

Furthermore, the quick sliding and inserting component comprises an inserting and closing guide rod which is arranged inside the wire holder in a sliding mode and can be inserted into the inserting slot, and a sliding switch assembly which is arranged on the peripheral side face of the wire holder and is used for driving the inserting and closing guide rod to perform sliding and inserting actions.

Further, the slide switch subassembly includes arc switch slide, the setting of smooth dress on wire holder week side, the straight line rack of setting on inserting and closing the excellent lateral wall, set up at inside and intermeshing's gear wheel, pinion of wire holder, be equipped with the arc rack with pinion toothing on the inner arc wall of arc switch slide, straight line rack and gear wheel meshing.

Furthermore, a protruding block convenient to push is arranged on the surface of the arc-shaped switch sliding plate.

Furthermore, the end parts of the inserting and closing guide rods which are symmetrically distributed are correspondingly provided with positioning convex blocks and positioning concave parts which are used for inserting and closing positioning and locking and are mutually matched.

Furthermore, the inserting guide rod which is symmetrically distributed is made of an insulating material, the positioning protruding block is a metal block, and a magnet block is arranged at the bottom of the positioning concave part and embedded into the inserting guide rod.

The invention has the beneficial effects that:

compared with the prior art, the current transformer is quick to install, convenient to use and reliable in fixation, an original wiring terminal is replaced by a wiring seat with a slot, and a quick sliding and inserting component which can clamp and fix an external wiring terminal through relative sliding and abutting is arranged in the wiring seat, so that the problems that the existing current transformer is low in installation efficiency, long in time consumption, high in labor intensity, complex in dismounting and the like are solved.

Drawings

The invention is further illustrated with reference to the following figures and examples:

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

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic diagram of the right view structure of the present invention;

fig. 4 is a schematic view of the internal structure of the wire holder of the present invention.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the effects of the invention easy to understand, the invention is further explained in the following with the accompanying drawings and the embodiments.

As shown in fig. 1 to 3, a current transformer with a convenient plug includes an insulating housing 13 with a grounding base 14, an iron core 15 disposed in the insulating housing 13, a primary winding 16 and a secondary winding 17 disposed on the iron core 15, wherein an insulating resin 18 is poured into the insulating housing 13, the primary winding 16 is disposed at the upper end of the iron core 15, the secondary winding 17 is disposed at the lower end of the iron core 15, and the grounding base 14 is used for fixing and also plays a role of grounding. The external side wall of the insulating shell 13 is correspondingly provided with four wire holders 1 correspondingly connected with the primary winding 16 and the secondary winding 17, and the two windings are respectively connected with two wire holders 1.

As shown in fig. 1 to 3, a slot 2 adapted to an external connector lug is disposed at a middle position of a top of each connector lug 1, and the slot 2 is rectangular and adapted to the external connector lug.

As shown in fig. 4, inside of each wire holder 1 and using the slot 2 as the symmetric point all is equipped with bilateral symmetry and the swift sliding member that can relatively slide and close, swift sliding member left and right sides cunning dress is inside wire holder 1, through sliding the back of closing, can be with inserting the external connector lug block in slot 2 to make external connector lug need not bolt and nut and also can realize quick fixed purpose.

Specifically, as shown in fig. 4, the quick sliding and inserting member includes two insertion guide rods 3 which are installed inside the wire holder 1 in a left-right sliding manner and can be inserted into the insertion slots 2, and a sliding switch assembly which is arranged inside the wire holder 1 and connected with the insertion guide rods 3. In order to guarantee that two inserting guide rods 3 in two quick sliding insertion components in the same wire holder 1 can be abutted, a positioning convex block 10 is arranged on the end portion on the left side in the inserting guide rod 3 on the right side, a positioning concave inner portion 3a matched with the positioning convex portion 10 is arranged on the end portion on the right side of the inserting guide rod 3 on the left side, and a magnet block 11 is arranged in the bottom of the positioning concave inner portion 3a and the inserting guide rod 3 embedded into the left side.

The protruding piece 10 in location is the metal block, and two inserts and close and lead stick 3 and be insulating material and make, and after two inserts and close and lead stick 3 and to close, location bulge 10 inserts in the concave inside 3a in location simultaneously with the magnet piece 11 actuation that is located the concave inside 3a bottom in location, realizes two locking of inserting between the stick of leading 3, prevents two inserts and closes and lead the stick 3 and to close the back and drop, has strengthened stability, has guaranteed not hard up with external connector lug block back. In addition, the shape of the insertion guide rod 3 is matched with the size and the shape of the mounting hole in the external connector lug, so that the external connector lug is not loosened after the insertion guide rod 3 is clamped with the external connector lug. And meanwhile, the positioning convex block 10 is matched with the positioning concave inner part 3a to play a positioning role.

The slide switch subassembly is including the arc switch slide 4 of smooth dress on 1 week side of connection terminal, be equipped with arc guide slot 12 on the week side of connection terminal 1, arc switch slide 4 smooth dress is in arc guide slot 12, be equipped with arc rack 8 on the inner arc wall of arc switch slide 4, be equipped with sharp rack 5 on the preceding lateral wall of the guide rod 3 that closes of inserting, the inside of connection terminal 1 is equipped with the gear wheel 6 with 5 meshes of sharp rack, with the pinion 7 of 8 meshes of arc rack, gear wheel 6 and pinion 7 intermeshing.

In order to facilitate manual pushing of the arc-shaped switch sliding plate 4, a protruding block 9 for increasing friction force is arranged on the plate surface of the arc-shaped switch sliding plate 4.

The working principle is as follows:

in use, the present invention is first secured by the grounding base 14. The two wire holders 1 at the top of the invention are used for connecting with the lines of the measured current, and the two wire holders 1 at the front side thereof are used for connecting with the measuring instrument.

When in connection, an external connector lug is inserted into the slot 2, then two arc switch sliding plates 4 on the connector lug 1 are synchronously pushed by hands to move oppositely along the arc guide grooves 12, two arc racks 8 drive the pinions 7 which are correspondingly engaged with each other to rotate in an engaged manner, wherein the pinion 7 on the right side rotates clockwise, and the pinion 7 on the left side rotates anticlockwise; through the rotation of pinion 7, gear wheel 6 and the meshing of the straight line rack 5 on the guide rod 3 that closes of inserting rotate, wherein gear wheel 6 on right side does anticlockwise rotation, make the guide rod 3 that closes of inserting on right side rectilinear movement in left direction, left gear wheel 6 does clockwise rotation, make the guide rod 3 that closes of inserting on left side rectilinear movement in right direction, metal location salient block 10 on the guide rod 3 that closes until right side inserts the inside of the concave inside 3a of location on the guide rod 3 that closes of inserting on left side, and with the interior magnet piece 11 actuation of the concave inside 3a of location. When the two insertion guide rods 3 are completely clamped, the external connector lug is fixed in the connector base 1. When the external connector lug needs to be pulled out, the arc switch sliding plate 4 is reset along the arc guide groove 12 again by hands.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a current transformer with convenient plug, includes insulating casing (13) that has ground connection base (14), sets up iron core (15) in insulating casing (13), sets up primary winding (16) and secondary winding (17) on iron core (15), and the pouring has insulating resin (18), its characterized in that in insulating casing (13): be equipped with on insulating casing (13) and correspond connection terminal (1) of being connected with primary winding (16), secondary winding (17), the inside of connection terminal (1) is equipped with and is symmetric distribution and relative slip butt back and external connector lug block to realize that external connector lug inserts fixed swift smooth component of inserting fast.

2. The current transformer with the convenient plug as claimed in claim 1, wherein: the top of the wire holder (1) is provided with a slot (2) matched with an external wire connector, and the quick sliding insertion components are symmetrically distributed on two sides of the slot (2).

3. The current transformer with the convenient plug as claimed in claim 2, wherein: the quick sliding and inserting component comprises an inserting and closing guide rod (3) which is arranged inside the wire holder (1) in a sliding mode and can be inserted into the slot (2), and a sliding switch assembly which is arranged on the peripheral side face of the wire holder (1) and drives the inserting and closing guide rod (3) to perform sliding and inserting actions.

4. The current transformer with the convenient plug as claimed in claim 3, wherein: the slide switch subassembly is including arc switch slide (4), setting sharp rack (5), setting on inserting and closing guide rod (3) lateral wall of smooth dress on connection terminal (1) week side, setting gear wheel (6), pinion (7) inside and intermeshing in connection terminal (1), be equipped with arc rack (8) with pinion (7) meshing on the inner arc wall of arc switch slide (4), sharp rack (5) and gear wheel (6) meshing.

5. The current transformer with the convenient plug as claimed in claim 4, wherein: the surface of the arc-shaped switch sliding plate (4) is provided with a convex block (9) which is convenient to push.

6. The current transformer with the convenient plug as claimed in claim 3, wherein: the end parts of the inserting guide rods (3) which are symmetrically distributed are correspondingly provided with positioning convex blocks (10) and positioning concave interiors (3a) which are used for inserting, positioning and locking and are mutually matched.

7. The current transformer with the convenient plug as claimed in claim 6, wherein: the inserting guide rod (3) which is symmetrically distributed is made of an insulating material, the positioning protruding block (10) is a metal block, and a magnet block (11) is arranged at the bottom of the positioning concave part (3a) and is embedded into the inserting guide rod (3).