Current sensor

Abstract

The utility model relates to a current sensor, which comprises a first end cover, a second end cover, a first framework, a second framework, a magnetic core, a PCB (printed circuit board), a PIN assembly, a first copper wire and a second copper wire. The first end cover is detachably and fixedly connected with the second end cover. The first framework and the second framework adopt the same structure, and the first framework is fixed at the upper end of the second framework; and the first framework and the second framework are fixed on the inner sides of the first end cover and the second end cover. The magnetic core is of an annular structure and is fixed to the first framework and the second framework. And the magnetic core is connected with the PCB. The PCB is fixed on the same side of the first framework and the second framework; the PIN assembly is welded on the PCB, and pins of the PIN assembly penetrate through the first end cover and the second end cover to be led out. The first copper wire and the second copper wire are arranged in parallel and fixed to the first end cover and the second end cover, and the first copper wire and the second copper wire penetrate through the first end cover, the magnetic core and the second end cover. According to the current sensor, the processing and manufacturing cost is reduced, and the assembly efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic equipment, in particular to a current sensor. Background Art

[0002] The skeleton inside the existing LZSR series current sensor is two different parts, which requires two sets of molds for processing, resulting in high manufacturing costs. In addition, the installation of the PCB and skeleton inside the existing LZSR series current sensor requires confirmation of multiple directions, which is relatively cumbersome, and the assembly process consumes a long time and has high labor costs. On the other hand, the accessories (such as partitions) of the existing LZSR series current sensors are integrated with the upper cover or lower cover, and the copper wires are fixed in the upper cover and lower cover, making it difficult to disassemble and replace the accessories and copper wires. Therefore, it is impossible to replace copper wires and accessories of different specifications during use, resulting in poor versatility of the current sensor and high development costs. Utility Model Content

[0003] The utility model provides a current sensor to solve the technical problems that the internal skeleton of the LZSR series current sensor in the prior art is two different parts, which requires two sets of molds to be processed, resulting in high manufacturing cost; and the installation of the PCB and the skeleton in the existing LZSR series current sensor requires confirmation of multiple directions, which is relatively cumbersome, the assembly process consumes a long time, and the labor cost is high.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] A current sensor, comprising: a first end cap, a second end cap, a first frame, a second frame, a magnetic core, a PCB board, a PIN assembly, a first copper wire and a second copper wire;

[0006] The first end cover is detachably fixedly connected to the second end cover;

[0007] The first frame and the second frame adopt the same structure, the first frame is fixed to the upper end of the second frame; the first frame and the second frame are fixed to the inner sides of the first end cover and the second end cover;

[0008] The magnetic core is configured as a ring structure, and the magnetic core is fixed on the first frame and the second frame; the magnetic core is connected to the PCB board;

[0009] The PCB board is fixed on the same side of the first frame and the second frame; the PIN component is welded on the PCB board, and the pins of the PIN component pass through the first end cover and the second end cover to lead outward;

[0010] The first copper wire and the second copper wire are arranged in a "U"-shaped structure, and the first copper wire and the second copper wire are arranged in parallel and fixed on the first end cover and the second end cover, and the first copper wire and the second copper wire pass through the first end cover, the magnetic core and the second end cover.

[0011] Further: also includes: a first attachment;

[0012] The first accessory is detachably fixed to the outer side of the first end cover; the first accessory is used to fix the first copper wire and the second copper wire on the outer side of the first end cover.

[0013] Further: the first accessory comprises: a first base and a first U-shaped groove;

[0014] The first U-shaped groove and the first base are integrally formed;

[0015] The first base is detachably fixed to the outer side of the first end cover;

[0016] The first copper wire and the second copper wire on the same side are clamped and fixed in the first U-shaped groove.

[0017] Further: also includes: a second attachment;

[0018] The second accessory is detachably fixed to the outer side of the second end cover; the second accessory is used to fix the first copper wire and the second copper wire on the outer side of the second end cover.

[0019] Further: the second accessory includes: a second base and a second U-shaped groove;

[0020] The second U-shaped groove and the second base are integrally formed;

[0021] The second base is detachably fixed to the outer side of the second end cover;

[0022] The first copper wire and the second copper wire on the same side are clamped and fixed in the second U-shaped groove.

[0023] Furthermore: the first skeleton and the second skeleton are vertically symmetrically arranged;

[0024] The first frame and the second frame are connected by mortise and tenon joints.

[0025] The current sensor provided by the utility model has at least the following beneficial effects or advantages:

[0026] The utility model provides a current sensor, wherein the first end cover is detachably fixedly connected to the second end cover. The first frame and the second frame adopt the same structure, the first frame is detachably fixed to the upper end of the second frame; the first frame and the second frame are fixed to the inner side of the first end cover and the second end cover. The magnetic core is set as an annular structure, the magnetic core is fixed on the first frame and the second frame; the magnetic core is connected to the PCB board. The PCB board is fixed on the same side of the first frame and the second frame; the PIN assembly is welded on the PCB board, and the pins of the PIN assembly pass through the first end cover and the second end cover to lead outward. The first copper wire and the second copper wire are set as a "U"-shaped structure, the first copper wire and the second copper wire are arranged in parallel and fixed on the first end cover and the second end cover, and the first copper wire and the second copper wire pass through the first end cover, the magnetic core and the second end cover. In the current sensor, the first frame and the second frame adopt the same structure, and only the same set of molds are needed for processing, thereby reducing the processing and manufacturing cost. In addition, since the first frame and the second frame adopt the same structure, the PCB board can be used regardless of whether it is assembled forward or reversely on the first frame or the second frame, thereby improving the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the external structure of a current sensor provided by an embodiment of the utility model;

[0028] Figure 2 A schematic diagram of the explosion structure of a current sensor provided by an embodiment of the utility model;

[0029] Figure 3 A schematic diagram of the internal structure of a current sensor provided in an embodiment of the utility model.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1-first end cover, 2-first accessory, 21-first base, 22-first U-shaped groove, 3-second end cover, 4-second accessory, 41-second base, 42-second U-shaped groove, 5-first copper wire, 6-second copper wire, 7-PIN assembly, 8-first skeleton, 9-second skeleton, 10-magnetic core, 11-PCB board. DETAILED DESCRIPTION

[0032] The utility model provides a current sensor to solve the technical problems that the internal skeleton of the LZSR series current sensor in the prior art is two different parts, which requires two sets of molds to be processed, resulting in high manufacturing cost; and the installation of the PCB and the skeleton in the existing LZSR series current sensor requires confirmation of multiple directions, which is relatively cumbersome, the assembly process consumes a long time, and the labor cost is high.

[0033] The utility model embodiment provides a current sensor, see Figure 1-Figure 3, which mainly includes: a first end cover 1, a second end cover 3, a first frame 8, a second frame 9, a magnetic core 10, a PCB board 11, a PIN assembly 7, a first copper wire 5 and a second copper wire 6. The first end cover 1 is detachably fixed to the second end cover 3. Among them: the first frame 8 and the second frame 9 adopt the same structure, and the first frame 8 is detachably fixed to the upper end of the second frame 9; specifically, the first frame 8 and the second frame 9 are symmetrically arranged up and down, and the first frame 8 and the second frame 9 are connected by mortise and tenon. The first frame 8 and the second frame 9 adopt the same structure, and only need to use the same set of molds to process, which reduces the processing and manufacturing cost. In addition, since the first frame 8 and the second frame 9 adopt the same structure, the PCB board 11 can be used on the first frame 8 or the second frame 9 regardless of whether it is assembled forwardly or reversely; taking the overall structure formed by the connection of the first frame 8 and the second frame 9 as a reference, the PIN component 7 on the PCB board 11 is assembled forwardly with the pins facing downward, and the PIN component 7 on the PCB board 11 is assembled reversely with the pins facing upward; it can be used directly during forward assembly, and during reverse assembly, the overall structure formed by the connection of the first frame 8 and the second frame 9 can be used after being rotated 180° and inverted, thereby improving assembly efficiency.

[0034] The first skeleton 8 and the second skeleton 9 are fixed on the inner side of the first end cover 1 and the second end cover 3. The magnetic core 10 is set as an annular structure, the magnetic core 10 is spliced ​​by two parts, and the magnetic core 10 is fixed on the first skeleton 8 and the second skeleton 9. The magnetic core 10 is electrically connected to the PCB board 11, and the PCB board 11 is fixed on the same side of the first skeleton 8 and the second skeleton 9. The PIN component 7 is welded on the PCB board 11, and the pins of the PIN component 7 pass through the first end cover 1 and the second end cover 3 to lead out. The first copper wire 5 and the second copper wire 6 are set as a "U"-shaped structure, the first copper wire 5 and the second copper wire 6 are arranged in parallel and fixed on the first end cover 1 and the second end cover 3, and the first copper wire 5 and the second copper wire 6 pass through the first end cover 1, the magnetic core 10 and the second end cover 3.

[0035] See also Figure 1-Figure 3, in order to limit the first copper wire 5 and the second copper wire 6, a preferred embodiment provided by the utility model also includes: a first attachment 2 and a second attachment 4. The first attachment 2 is detachably fixed to the outside of the first end cover 1; the first attachment 2 is used to fix the first copper wire 5 and the second copper wire 6 on the outside of the first end cover 1. The first attachment 2 includes: a first base 21 and a first U-shaped groove 22; the first U-shaped groove 22 and the first base 21 are integrally formed; the first base 21 is detachably fixed to the outside of the first end cover 1; the first copper wire 5 and the second copper wire 6 on the same side are clamped and fixed in the first U-shaped groove 22. The second attachment 4 is detachably fixed to the outside of the second end cover 3; the second attachment 4 is used to fix the first copper wire 5 and the second copper wire 6 on the outside of the second end cover 3. The second attachment 4 includes: a second base 41 and a second U-shaped groove 42; the second U-shaped groove 42 and the second base 41 are integrally formed; the second base 41 is detachably fixed to the outside of the second end cover 3; the first copper wire 5 and the second copper wire 6 on the same side are clamped and fixed in the second U-shaped groove 42.

[0036] See also Figure 1-Figure 3 The current sensor provided by the embodiment of the utility model has at least the following beneficial effects or advantages:

[0037] In the current sensor provided by the embodiment of the utility model, the first end cap 1 is detachably fixedly connected to the second end cap 3. The first frame 8 and the second frame 9 adopt the same structure, and the first frame 8 is detachably fixed to the upper end of the second frame 9; the first frame 8 and the second frame 9 are fixed to the inner side of the first end cap 1 and the second end cap 3. The magnetic core 10 is set as an annular structure, and the magnetic core 10 is fixed on the first frame 8 and the second frame 9; the magnetic core 10 is connected to the PCB board 11. The PCB board 11 is fixed on the same side of the first frame 8 and the second frame 9; the PIN component 7 is welded on the PCB board 11, and the pins of the PIN component 7 pass through the first end cap 1 and the second end cap 3 to lead outward. The first copper wire 5 and the second copper wire 6 are set as a "U"-shaped structure, and the first copper wire 5 and the second copper wire 6 are arranged in parallel and fixed on the first end cap 1 and the second end cap 3, and the first copper wire 5 and the second copper wire 6 pass through the first end cap 1, the magnetic core 10 and the second end cap 3. In the current sensor, the first frame 8 and the second frame 9 adopt the same structure, and only the same set of molds are needed for processing, which reduces the processing and manufacturing cost. In addition, since the first frame 8 and the second frame 9 adopt the same structure, the PCB board 11 can be used on the first frame 8 or the second frame 9 regardless of whether it is assembled forward or reverse, thereby improving assembly efficiency.

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] In the description of the present utility model, it should be noted that the terminology nouns in the various embodiments, such as words indicating directions such as "upper", "lower", "front", "back", "left", "right", etc., are only for simplifying the description of the positional relationship based on the drawings in the specification, and do not mean that the referred elements and devices must be operated according to the specific directions and specified operations and methods and structures in the specification. Such directional nouns do not constitute limitations on the present utility model.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A current sensor, characterized in that: include: A first end cap, a second end cap, a first frame, a second frame, a magnetic core, a PCB board, a PIN assembly, a first copper wire, and a second copper wire; The first end cover is detachably fixedly connected to the second end cover; The first frame and the second frame adopt the same structure, the first frame is fixed to the upper end of the second frame; the first frame and the second frame are fixed to the inner sides of the first end cover and the second end cover; The magnetic core is configured as a ring structure, and the magnetic core is fixed on the first frame and the second frame; the magnetic core is connected to the PCB board; The PCB board is fixed on the same side of the first frame and the second frame; the PIN component is welded on the PCB board, and the pins of the PIN component pass through the first end cover and the second end cover to lead outward; The first copper wire and the second copper wire are arranged in a "U"-shaped structure, and the first copper wire and the second copper wire are arranged in parallel and fixed on the first end cover and the second end cover, and the first copper wire and the second copper wire pass through the first end cover, the magnetic core and the second end cover.

2. The current sensor according to claim 1, characterized in that: Also includes: First Annex; The first accessory is detachably fixed to the outer side of the first end cover; the first accessory is used to fix the first copper wire and the second copper wire on the outer side of the first end cover.

3. The current sensor according to claim 2, characterized in that: The first accessory comprises: a first base and a first U-shaped groove; The first U-shaped groove and the first base are integrally formed; The first base is detachably fixed to the outer side of the first end cover; The first copper wire and the second copper wire on the same side are clamped and fixed in the first U-shaped groove.

4. The current sensor according to claim 1, characterized in that: Also includes: Second Annex; The second accessory is detachably fixed to the outer side of the second end cover; the second accessory is used to fix the first copper wire and the second copper wire on the outer side of the second end cover.

5. The current sensor according to claim 4, characterized in that: The second attachment includes: a second base and a second U-shaped groove; The second U-shaped groove and the second base are integrally formed; The second base is detachably fixed to the outer side of the second end cover; The first copper wire and the second copper wire on the same side are clamped and fixed in the second U-shaped groove.

6. The current sensor according to any one of claims 1 to 5, characterized in that: The first frame and the second frame are symmetrically arranged vertically; The first frame and the second frame are connected by mortise and tenon joints.

Images