CN210403488U

CN210403488U - Current transformer with primary coil and magnetic shielding

Info

Publication number: CN210403488U
Application number: CN201921493023.5U
Authority: CN
Inventors: 张�浩; 彭文强; 刘爱; 胡强
Original assignee: Jiaxing Wisdom Electronic Tech Co ltd
Current assignee: Jiaxing Wisdom Electronic Tech Co ltd
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2020-04-24
Anticipated expiration: 2029-09-09

Abstract

The utility model provides a from current transformer who takes primary coil and magnetic screen, relates to electric elements technical field, and this current transformer can be applicable to the insertion of multiple copper terminal, and insulating nature between each electric conductor is good, prevents effectively that lead-out wire and secondary coil from bumping and touching and the condition appearance that takes place the short circuit. The current transformer with the primary coil and the magnetic shielding comprises a housing, a secondary coil, an outgoing line and a primary copper terminal. The housing is provided with a core column, the inner housing is sleeved on the core column, the outer housing is provided with a wire slot, the inner housing is provided with a notch, the width of the notch is larger than that of the wire slot, and a clamping groove is arranged between the inner housing and the secondary coil. The primary copper terminal comprises a first pin, a second pin and a connecting section, the connecting section is parallel to the end face of the housing, the first pin penetrates through the through hole and is clamped in the clamping groove, a third pin is further connected to the first pin, and the second pin and the third pin are located on the same horizontal plane.

Description

Current transformer with primary coil and magnetic shielding

Technical Field

The utility model relates to an electric elements technical field, especially a current transformer from taking primary coil and magnetic screen.

Background

The existing current transformer has the following defects: the insulativity among all conductors is poor; the traditional current transformer is only suitable for the insertion of one primary copper terminal, and the application range is limited; the lead-out wire easily touches the secondary coil, and short circuit occurs.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a current transformer with a primary coil and a magnetic shield, which can solve the above technical problems.

A current transformer with a primary coil and a magnetic shield comprises a housing, a secondary coil arranged in the housing, two outgoing lines connected with the secondary coil, and a primary copper terminal passing through the housing and the secondary coil, wherein the housing comprises an outer housing and an inner housing positioned in the outer housing, the inner housing is a antimagnetic housing, the outer housing and the inner housing are respectively provided with an outer housing opening and an inner housing opening, one end of the outer housing, which is far away from the outer housing opening, extends towards the inside of the outer housing to form a core column, the inner housing is sleeved on the core column, the side wall of the outer housing is provided with two wire grooves through which the outgoing lines are arranged, the side wall of the inner housing is provided with a notch communicated with the inner housing opening and the wire grooves, the width of notch is greater than the width of wire casing, the secondary coil cover is established just be located on the stem the inside of inner cover shell, the inner cover shell with be provided with an insulating part between the secondary coil, circular through-hole has still been seted up at the middle part of stem, still be equipped with a plurality of draw-in grooves on the inner wall of circular through-hole, a copper terminal includes a first pin, a second pin to and a linkage segment of being connected with first, second pin is perpendicular, the linkage segment is on a parallel with the terminal surface setting of housing, first pin is worn to locate in the through-hole and joint in the draw-in groove, the side of first pin is still laminated and is connected and be equipped with a third pin, second pin and third pin are located a horizontal plane.

Further, the insulation component is any one of an insulating glue layer or an insulating rubber gasket.

Further, the inner housing opening is located inside the outer housing.

Further, the intersection of the notch and the opening of the inner casing is in a fillet structure.

Furthermore, anti-slip grooves are formed in the second pin and the third pin.

Furthermore, a positioning hole and an installation terminal are further arranged on the primary copper terminal.

Furthermore, an electronic wire is connected to the mounting terminal.

Furthermore, an enameled wire is wound on the lead-out wire.

Compared with the prior art, the utility model provides a from current transformer who takes primary coil and magnetic screen makes it have the function of magnetic screen and has promoted insulating properties through setting up of inner cover and insulating assemblies. The arrangement of the circular through hole and the clamping groove can adapt to the insertion of various copper terminals, and the application range is enlarged. The side wall of the outer cover is provided with two wire grooves for penetrating the outgoing wires, and the side wall of the inner cover is provided with a notch communicated with the opening of the inner cover and the wire grooves, so that the outgoing wires can be prevented from being touched by the secondary coil, and the short circuit can be avoided.

Drawings

Embodiments of the present invention are described below with reference to the accompanying drawings, in which:

fig. 1 is the utility model provides a from current transformer who takes primary coil and magnetic shield's schematic structure.

Fig. 2 is a schematic structural diagram of the outer housing, the inner housing and the insulating assembly provided by the present invention.

Detailed Description

The following describes in further detail specific embodiments of the present invention based on the drawings. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.

Please refer to fig. 1, which is a schematic structural diagram of a current transformer with a primary coil and a magnetic shield according to the present invention. The current transformer with the primary coil and the magnetic shield comprises a housing 11, a secondary coil 12 arranged inside the housing 11, two lead-out wires 13 connected with the secondary coil 12, and a primary copper terminal 14 penetrating through the housing 11 and the inside of the secondary coil 12.

Referring to fig. 1 and 2, the housing 11 includes an outer housing 111 and an inner housing 112 positioned within the outer housing 111. The inner cover 112 is a magnetic shield, which is known to those skilled in the art and has a magnetic shielding function, and is not described herein. The outer and

inner shells

111, 112 each have an outer shell opening 113 and an inner shell opening 114. The one end that the outer housing shell 111 kept away from outer housing shell opening 113 extends towards the inside of outer housing shell 111 and is formed with a stem 115, the one end that inner housing shell 112 kept away from inner housing shell opening 114 is equipped with one with stem 115 assorted hole groove 116, inner housing shell 112 passes through hole groove 116 cover is established on the stem 115, be equipped with two wire casing 117 of wearing to establish lead-out wire 13 on the lateral wall of outer housing shell 111, be provided with a notch 118 that all communicates with inner housing shell opening 114 and wire casing 117 on the lateral wall of inner housing shell 112, the width of notch 118 is greater than the width of wire casing 117, can make things convenient for the workman to fix lead-out wire 13 in wire casing 117. The outgoing line 13 is inserted into the wire slot 117, and the side wall of the inner cover 112 is provided with a notch 118, so that a worker can conveniently add a binder, such as glue, into the wire slot 117 to fix the outgoing line 13. The rounded configuration of the intersection of the slot 118 and the inner housing opening 114 facilitates insertion of a tool for releasing adhesive into the slot 118 by a worker. It should be noted that the notch 118 should be communicated with the end face of the inner housing 112, so that during assembly, the notch 118 faces the position of the slot 117, so that the outgoing line 13 directly enters the slot 117, and the situation that the outgoing line 13 touches the secondary coil 12 to cause short circuit is avoided.

The secondary coil 12 is sleeved on the core column 115 and is located inside the inner cover 112. An insulation assembly 110 is arranged between the inner cover 112 and the secondary coil 12, the insulation assembly 110 is any one of an insulating glue layer or a polyester film gasket, and the insulation assembly 110 can ensure that the insulation performance and performance parameters of the conductors of the product are stable. The middle part of the core column 115 is also provided with a circular through hole 16, and the inner wall of the circular through hole 16 is also provided with a plurality of clamping grooves 17. Circular through-hole 16 adds the structure of draw-in groove 17, specifically, the quantity of draw-in groove 17 is 4, and adjacent the contained angle of draw-in groove is 90 degrees, promptly draw-in groove 17 is the cross and distributes, can be used for copper terminal 14 once to be circular shape bar copper or brush line simultaneously, also can be used for copper terminal 14 once to be the copper sheet of panel.

The primary copper terminal 14 includes a first pin 141, a second pin 142, and a connecting section 143 connected to the first and

second pins

141, 142 vertically, the connecting section 143 is parallel to the end surface of the housing 11, the first pin 141 is inserted into the circular through hole 16 and is clamped in the clamping groove 17, a third pin 144 is attached to the side surface of the first pin 141, and the second pin 142 and the third pin 144 are located on a horizontal plane. The connecting section 143 is arranged parallel to the end face of the housing 11, and the parallel connecting section 143 can save space, so that the current transformer has a compact structure. The first pin 141 and the third pin 144 are connected by riveting, and the riveting connection limits the movement of the first pin 141 to bend the first pin 141 and the third pin 144, so that the third pin 144 cannot pass through the circular through hole 16. Anti-slip grooves 145 are formed in the second pins 142 and the third pins 144. The anti-slip groove 145 can prevent the current transformer from shifting during installation, so that the current transformer is more convenient and accurate to install.

The primary copper terminal 14 is further provided with a positioning hole 146 and a mounting terminal 147, and the positioning hole 146 can facilitate mounting and connection of the current transformer. An electrical wire (not shown) is also connected to the mounting terminal 147 for easy assembly by the customer.

The outgoing line 13 is further wound with an enameled wire 131. The wound enamel wire 131 can play an insulating role.

In this embodiment, the current transformer with its primary coil and magnetic shield is encapsulated with epoxy glue after the assembly of each structure, so as to ensure the insulation performance between the conductors.

Compared with the prior art, the utility model provides a from current transformer who takes primary coil and magnetic screen makes it have the function of magnetic screen and has promoted insulating properties through setting up of inner cover 112 and insulating assembly 110. The arrangement of the circular through hole 16 and the clamping groove 17 can adapt to the insertion of various copper terminals, and the application range is expanded. The side wall of the outer housing 111 is provided with two wire slots 117 through which the outgoing line 13 passes, and the side wall of the inner housing 112 is provided with a notch 118 communicated with the inner housing opening 114 and the wire slots 117, so that the outgoing line 13 can be prevented from touching the secondary coil 12, and the short circuit can be prevented.

The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.

Claims

1. The utility model provides a from current transformer who takes primary coil and magnetic screen which characterized in that: the current transformer with the primary coil and the magnetic shield comprises a housing, a secondary coil arranged in the housing, two outgoing lines connected with the secondary coil, and a primary copper terminal passing through the housing and the secondary coil, wherein the housing comprises an outer housing and an inner housing positioned in the outer housing, the inner housing is a magnetic shield, the outer housing and the inner housing are respectively provided with an outer housing opening and an inner housing opening, one end of the outer housing, far away from the outer housing opening, extends towards the inside of the outer housing to form a core column, one end of the inner housing, far away from the inner housing opening, is provided with a hole slot matched with the core column, the inner housing is sleeved on the core column through the hole slot, the side wall of the outer housing is provided with two wire slots penetrating through the outgoing lines, the side wall of the housing is provided with a notch communicated with the inner housing opening and the wire slot, the width of notch is greater than the width of wire casing, the secondary coil cover is established just be located on the stem the inside of inner cover shell, the inner cover shell with be provided with an insulating part between the secondary coil, circular through-hole has still been seted up at the middle part of stem, still be equipped with a plurality of draw-in grooves on the inner wall of circular through-hole, a copper terminal includes a first pin, a second pin to and a linkage segment of being connected with first, second pin are perpendicular, the linkage segment is on a parallel with the terminal surface setting of housing, first pin is worn to locate in the circular through-hole and joint in the draw-in groove, the side of first pin is still laminated and is connected and be equipped with a third pin, second pin and third pin are located a horizontal plane.

2. The current transformer with its primary coil and magnetic shield of claim 1, wherein: the insulating assembly is any one of an insulating glue layer or an insulating rubber gasket.

3. The current transformer with its primary coil and magnetic shield of claim 1, wherein: the inner housing opening is located inside the outer housing.

4. The current transformer with its primary coil and magnetic shield of claim 1, wherein: the intersection of the notch and the opening of the inner casing is in a fillet structure.

5. The current transformer with its primary coil and magnetic shield of claim 1, wherein: and anti-skidding grooves are formed in the second pin and the third pin.

6. The current transformer with its primary coil and magnetic shield of claim 1, wherein: and the primary copper terminal is also provided with a positioning hole and an installation terminal.

7. The current transformer with its primary coil and magnetic shield of claim 6, wherein: and the mounting terminal is also connected with an electronic wire.

8. The current transformer with its primary coil and magnetic shield of claim 1, wherein: and an enameled wire is wound on the lead-out wire.