CN218956667U

CN218956667U - Threading-free current sensor

Info

Publication number: CN218956667U
Application number: CN202221431202.8U
Authority: CN
Inventors: 柳晓辉; 王秀
Original assignee: Yichang Ruici Technology Co ltd
Current assignee: Yichang Ruici Technology Co ltd
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2023-05-02
Anticipated expiration: 2032-06-09

Abstract

A threading-free current sensor comprises a shell formed by combining two semicircular shells, wherein a groove for a wire to pass through is formed in the upper end of each semicircular shell, each semicircular shell is of a hollow structure, and a PCB (printed Circuit Board) is placed in one semicircular shell; a U-shaped magnetic core is arranged in the semicircular shell at the groove, a coil is wound outside the U-shaped magnetic core, and the coil is connected with a detection circuit on the PCB. The utility model provides a threading-free current sensor, which does not need to cut or re-thread a lead, and the whole shell only needs to be provided with a die, so that the structure is simple and the cost is low; and a metal protective cover is arranged to play a role in protecting the lead and shielding.

Description

Threading-free current sensor

Technical Field

The utility model relates to the technical field of current detection, in particular to a threading-free current sensor.

Background

The utility model patent with the publication number of CN210465525U discloses an open type fluxgate current sensor, which is used for detecting wires after being encircled into a circle by adopting two semicircular magnetic cores to be connected in a hinged manner so as to facilitate the wires to pass through. But the device has a complex structure and relatively high production cost.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a threading-free current sensor, which can simplify the structure and reduce the cost.

In order to solve the technical problems, the utility model adopts the following technical scheme: a threading-free current sensor comprises a shell formed by combining two semicircular shells, wherein a groove for a wire to pass through is formed in the upper end of each semicircular shell, each semicircular shell is of a hollow structure, and a PCB (printed Circuit Board) is placed in one semicircular shell;

a U-shaped magnetic core is arranged in the semicircular shell at the groove, a coil is wound outside the U-shaped magnetic core, and the coil is connected with a detection circuit on the PCB.

Preferably, the upper end of the shell is inserted with a protective cap.

Preferably, the protective cap is made of a metal material.

Preferably, a mounting column for mounting the PCB is arranged in the semicircular shell, a screw hole is formed in the mounting column, a mounting hole corresponding to the screw hole is formed in the PCB, and the PCB is mounted on the mounting column through a screw.

Preferably, the semicircular shell is also internally provided with a supporting column for supporting the PCB, and the shape of the PCB is matched with the shape of the inner cavity of the semicircular shell.

Preferably, a vertical clamping groove and a horizontal clamping groove for limiting the U-shaped magnetic core are arranged in the semicircular shell.

Preferably, the bottom of the semicircular shell is provided with a wire outlet hole.

Preferably, a wire rod is arranged at the wire outlet hole.

Preferably, the lower end of the semicircular shell is provided with a connecting lug.

Preferably, the surface of the two semicircular shells, which is contacted with each other, is provided with a male end and a female end which are used for limiting, and the male ends and the female ends are arranged in a staggered manner.

The utility model provides a threading-free current sensor, which does not need to cut or re-thread a lead, and the whole shell only needs to be provided with a die, so that the structure is simple and the cost is low; and a metal protective cover is arranged to play a role in protecting the lead and shielding.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of an explosive structure according to the present utility model;

FIG. 3 is a schematic view of a semi-circular housing of the present utility model with a PCB and a magnetic core;

fig. 4 is a schematic view of the structure of the present utility model in use.

Detailed Description

As shown in fig. 1-3, a threading-free current sensor comprises a shell formed by combining two semicircular shells 1, wherein a groove 2 for a wire to pass through is formed in the upper end of each semicircular shell 1, each semicircular shell 1 is of a hollow structure, and a PCB 3 is placed in one semicircular shell 1;

a U-shaped magnetic core 4 is arranged in the semicircular shell 1 at the groove 2, a coil is wound outside the U-shaped magnetic core 4, and the coil is connected with a detection circuit on the PCB 3. And detecting the current by using a fluxgate.

Preferably, the upper end of the shell is inserted with a protective cap 5.

Preferably, the protective cap 5 is made of a metal material. The protection wire and the shielding function are achieved.

Preferably, a mounting column 6 for mounting the PCB 3 is arranged in the semicircular shell 1, a screw hole is arranged on the mounting column 6, a mounting hole corresponding to the screw hole is arranged on the PCB 3, and the PCB 3 is mounted on the mounting column 6 through a screw.

Preferably, the semicircular shell 1 is also provided with a supporting column 7 for supporting the PCB 3, and the shape of the PCB 3 is matched with the shape of the inner cavity of the semicircular shell 1. So that the PCB 3 can be stably disposed in the semicircular case 1.

Preferably, a vertical clamping groove 8 and a horizontal clamping groove 9 for limiting the U-shaped magnetic core 4 are arranged in the semicircular shell 1. The U-shaped magnetic core 4 is clamped in the vertical clamping groove 8 and the horizontal clamping groove 9 to limit.

Preferably, the bottom of the semicircular shell 1 is provided with a wire outlet hole 10. The outgoing lines of the PCB 3 are led out from the outgoing line holes 10.

Preferably, a wire rod 11 is disposed at the wire hole 10. The wire rod 11 is used for leading out wires of the PCB.

Preferably, the lower end of the semicircular shell 1 is provided with a connecting lug 12. The connecting lugs 12 serve to connect the two semicircular shells 1 together.

Preferably, the contact surface of the two semicircular shells 1 is provided with a male end 13 and a female end 14 for limiting, and the male end 13 and the female end 14 are arranged in a staggered manner.

In use, as shown in fig. 4, the wire is passed through the groove 2 and then covered with the protective cap 5. The wire passes through the middle of the U-shaped magnetic core 4, and current detection is performed by adopting a fluxgate.

The above embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the scope of the present utility model should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.

Claims

1. A threading-free current sensor is characterized in that: the device comprises a shell formed by combining two semicircular shells (1), wherein a groove (2) for a wire to pass through is formed in the upper end of each semicircular shell (1), each semicircular shell (1) is of a hollow structure, and a PCB (printed Circuit Board) 3 is placed in one semicircular shell (1);

a U-shaped magnetic core (4) is arranged in a semicircular shell (1) at the groove (2), a coil is wound outside the U-shaped magnetic core (4), and the coil is connected with a detection circuit on the PCB (3).

2. A threading-free current sensor as claimed in claim 1 wherein: the upper end of the shell is inserted with a protective cap (5).

3. A threading-free current sensor as claimed in claim 2 wherein: the protective cap (5) is made of a metal material.

4. A threading-free current sensor as claimed in claim 1 wherein: a mounting column (6) for mounting the PCB (3) is arranged in the semicircular shell (1), a screw hole is formed in the mounting column (6), a mounting hole corresponding to the screw hole is formed in the PCB (3), and the PCB (3) is mounted on the mounting column (6) through a screw.

5. The threading-free current sensor of claim 4 wherein: the semicircular shell (1) is internally provided with a supporting column (7) for supporting the PCB (3), and the shape of the PCB (3) is matched with the shape of the inner cavity of the semicircular shell (1).

6. A threading-free current sensor as claimed in claim 1 wherein: a vertical clamping groove (8) and a horizontal clamping groove (9) for limiting the U-shaped magnetic core (4) are arranged in the semicircular shell (1).

7. A threading-free current sensor as claimed in claim 1 wherein: the bottom of the semicircular shell (1) is provided with a wire outlet hole (10).

8. The threading-free current sensor of claim 7 wherein: and a wire rod (11) is arranged at the wire outlet hole (10).

9. A threading-free current sensor as claimed in claim 1 wherein: the lower end of the semicircular shell (1) is provided with a connecting lug (12).

10. A threading-free current sensor as claimed in claim 1 wherein: the surface of the two semicircular shells (1) which are contacted is provided with a male end (13) and a female end (14) which are used for limiting, and the male end (13) and the female end (14) are arranged in a staggered mode.