CN214588418U

CN214588418U - Miniature pincerlike current transformer

Info

Publication number: CN214588418U
Application number: CN202120689957.7U
Authority: CN
Inventors: 蒋大维
Original assignee: Jiangyin Spark Electronic Technology Co ltd
Current assignee: Jiangyin Spark Electronic Technology Co ltd
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2021-11-02
Anticipated expiration: 2031-04-06

Abstract

The utility model relates to the technical field of current transformers, in particular to a miniature pincerlike current transformer, which comprises a left shell and a right shell, wherein the lower parts of the left shell and the right shell are rotatably connected through hole-shaft matching, the upper parts of the left shell and the right shell are rotatably opened and rotatably folded through the hole-shaft matching, and a hollow part is formed between the upper parts of the left shell and the right shell when the left shell and the right shell are rotatably folded; the upper portions of the left shell and the right shell are respectively provided with a shell groove, a left iron core is arranged in the shell groove of the left shell, a right iron core is arranged in the shell groove of the right shell, the left iron core and the right iron core are respectively provided with an induction coil, and an elastic pressing block is arranged between the outer side wall position in the shell groove and the induction coil. The utility model discloses a realize pincerlike current transformer's rapid Assembly to current transformer's maintenance performance has been improved.

Description

Miniature pincerlike current transformer

Technical Field

The utility model relates to a current transformer technical field, concretely relates to miniature pincerlike current transformer.

Background

The current transformer is an instrument for realizing current measurement by converting a large primary side current into a small secondary side current according to the electromagnetic induction principle.

The traditional current transformer is a closed current transformer, so that the measurement operation is inconvenient and the safety is poor. With the development of power automation technology, the wiring of the power department in the relay protection secondary circuit is more and more dense, and people need to detect the current signal of one wire in the dense wire turns more and more. Therefore, the split core type current transformer is convenient to use and wide in application, and a tested line can be free from being disconnected by using the split core type current transformer.

However, the split core type current transformer in the prior art has the following problems:

firstly, the structure is comparatively complicated, and the assembly is comparatively troublesome, is unfavorable for mass production manufacturing.

And secondly, local devices of the current transformer can not be replaced independently when damaged, and once the parts are damaged, the whole transformer is scrapped, so that the equipment cost is wasted.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a miniature pincerlike current transformer aims at realizing pincerlike current transformer's rapid Assembly to improve current transformer's maintainability. The specific technical scheme is as follows:

a miniature pincerlike current transformer comprises a left shell and a right shell, wherein the lower parts of the left shell and the right shell are matched through a hole shaft to realize rotary connection, the upper parts of the left shell and the right shell are matched through the hole shaft to realize rotary opening and rotary closing, and a hollow part is formed between the upper parts of the left shell and the right shell when the left shell and the right shell are rotated and closed; the upper portions of the left shell and the right shell are respectively provided with a shell groove, a left iron core is arranged in the shell groove of the left shell, a right iron core is arranged in the shell groove of the right shell, the left iron core and the right iron core are respectively provided with an induction coil, and an elastic pressing block is arranged between the outer side wall position in the shell groove and the induction coil.

Preferably, the elastic pressing block is a hollow strip-shaped elastic pressing block.

Preferably, be located on the left casing hole axle cooperation position between left casing and the right casing is provided with a center cover respectively and is located center cover outlying periphery cover the center cover with be provided with the torsional spring between the periphery cover, the one end of torsional spring for left casing is fixed to be set up, the other end elasticity of torsional spring is pasted and is leaned on the casing of the right side.

The utility model discloses in, be provided with first breach and second breach on the peripheral cover respectively, the one end of torsional spring is by connecing on the first breach, the other end of torsional spring passes elasticity is pasted and is leaned on behind the second breach on the side shield of right side casing lower part.

The utility model discloses in, be provided with the axis of rotation on the casing of the right side, the axis of rotation with the hole normal running fit of center cover is connected.

The utility model discloses in, when left side casing and right casing rotate and fold, it left side iron core with right side iron core folds each other and forms annular closed iron core circle.

Preferably, the left iron core and the iron core respectively comprise integrally arranged side iron core parts, an upper iron core part and a lower iron core part which are respectively perpendicular to the side iron core parts, a large transition circular arc is arranged between the upper iron core part and the side iron core parts, and a small transition circular arc is arranged between the lower iron core part and the side iron core parts.

Preferably, the lower part of the right casing is provided with a wire casing and a wiring bayonet which are communicated with the casing groove, and the lead-out wire of the induction coil is led out from the wire casing and is clamped and fixed through the wiring bayonet.

The utility model discloses in, left side casing and right casing are equallyd divide and are do not folded the connection by upper and lower two parts casing and form and through connect in screw between the upper and lower two parts casing is fixed.

Preferably, the left iron core and the right iron core are the same in size and are symmetrical left and right.

The utility model has the advantages that:

first, the utility model discloses a miniature pincerlike current transformer, simple structure, part are small in quantity, and the equipment is convenient to realized pincerlike current transformer's rapid Assembly, and be favorable to current transformer mass production to make.

Second, the utility model discloses a miniature pincerlike current transformer, the iron core and the induction coil part of controlling two halves can be changed alone comparatively conveniently, and maintainability is good.

Third, the utility model discloses a miniature pincerlike current transformer utilizes middle torsional spring to guarantee the laminating that the terminal surface can be sufficient unshakable in one's determination to current transformer's measurement accuracy has been guaranteed.

Drawings

Fig. 1 is a schematic structural view of a micro split core type current transformer of the present invention;

FIG. 2 is a schematic view of the left and right housings of FIG. 1 with the upper portions removed;

FIG. 3 is a schematic view of the core and coil of FIG. 2 with the torsion spring removed;

fig. 4 is a schematic view of the shapes of the left and right cores.

In the figure: 1. left casing, 2, right casing, 3, cavity, 4, casing groove, 5, left iron core, 6, right iron core, 7, induction coil, 8, elastic pressing block, 9, center cover, 10, peripheral cover, 11, torsional spring, 12, first breach, 13, second breach, 14, side shield, 15, side iron core part, 16, last side iron core part, 17, lower iron core part, 18, transition great circular arc, 19, transition small circular arc, 20, wire casing, 21, wiring bayonet socket.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Fig. 1 to 4 show an embodiment of a miniature pincerlike current transformer according to the present invention, which includes a left casing and a right casing, wherein the lower portions of the left casing and the right casing are rotatably connected by hole-shaft fit, the upper portions of the left casing and the right casing are rotatably opened and rotatably closed by the hole-shaft fit, and a hollow space is formed between the upper portions of the left casing and the right casing when the left casing and the right casing are rotatably closed; the upper portions of the left shell and the right shell are respectively provided with a shell groove, a left iron core is arranged in the shell groove of the left shell, a right iron core is arranged in the shell groove of the right shell, the left iron core and the right iron core are respectively provided with an induction coil, and an elastic pressing block is arranged between the outer side wall position in the shell groove and the induction coil.

In this embodiment, the peripheral sleeve is provided with a first notch and a second notch respectively, one end of the torsion spring is abutted to the first notch, and the other end of the torsion spring passes through the second notch and then is elastically abutted to the side baffle plate at the lower part of the right casing.

In this embodiment, be provided with the axis of rotation on the right casing, the axis of rotation with the hole normal running fit of center cover is connected.

In this embodiment, when the left casing and the right casing are rotated and closed, the left iron core and the right iron core are closed to form an annular closed iron core ring.

In this embodiment, the left casing and the right casing are formed by joining and connecting an upper casing and a lower casing respectively and are fixed by a screw connected between the upper casing and the lower casing.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A miniature pincerlike current transformer is characterized by comprising a left shell and a right shell, wherein the lower parts of the left shell and the right shell are in rotating connection through hole shaft matching, the upper parts of the left shell and the right shell are in rotating opening and rotating closing through the hole shaft matching, and a hollow part is formed between the upper parts of the left shell and the right shell when the left shell and the right shell are in rotating closing; the upper portions of the left shell and the right shell are respectively provided with a shell groove, a left iron core is arranged in the shell groove of the left shell, a right iron core is arranged in the shell groove of the right shell, the left iron core and the right iron core are respectively provided with an induction coil, and an elastic pressing block is arranged between the outer side wall position in the shell groove and the induction coil.

2. The miniature split core type current transformer as claimed in claim 1, wherein said spring pressing block is a hollow bar-shaped spring pressing block.

3. The miniature split core type current transformer according to claim 1, wherein a central sleeve and a peripheral sleeve located at the periphery of the central sleeve are respectively arranged at the hole-shaft matching part between the left shell and the right shell on the left shell, a torsion spring is arranged between the central sleeve and the peripheral sleeve, one end of the torsion spring is fixedly arranged relative to the left shell, and the other end of the torsion spring is elastically attached to the right shell.

4. The miniature split-core type current transformer according to claim 3, wherein the outer jacket is provided with a first notch and a second notch respectively, one end of the torsion spring is abutted against the first notch, and the other end of the torsion spring passes through the second notch and then is elastically abutted against the side baffle plate at the lower part of the right shell.

5. The miniature split core type current transformer according to claim 3, wherein a rotating shaft is arranged on the right shell, and the rotating shaft is connected with the inner hole of the central sleeve in a rotating fit manner.

6. The miniature split core type current transformer according to claim 1, wherein when said left and right shells are rotated to close, said left and right cores are closed to form a ring-shaped closed core ring.

7. The micro split core type current transformer according to claim 1, wherein the left core and the core comprise integrally arranged side core portions, an upper core portion and a lower core portion perpendicular to the side core portions, respectively, and a large transition arc is arranged between the upper core portion and the side core portions, and a small transition arc is arranged between the lower core portion and the side core portions.

8. The miniature split core type current transformer of claim 1, wherein a wire slot and a wiring bayonet which are communicated with the housing slot are arranged at the lower part of the right housing, and an outgoing wire of the induction coil is led out through the wire slot and is clamped and fixed through the wiring bayonet.

9. The miniature split-core current transformer as claimed in claim 1, wherein said left and right housings are formed by joining upper and lower housings together and are fixed by screws connected between said upper and lower housings.

10. The miniature split core type current transformer as claimed in claim 1, wherein said left core and said right core are the same size and are symmetrical.