CP needle direct insertion type installation square shell

Abstract

The utility model discloses a CP needle direct insertion type installation square shell. The CP needle direct insertion type installation square shell comprises an outer shell; the coil is arranged in the outer shell; the inner shell is matched with the outer shell; the symmetrical primary lead-out CP needles are fixedly connected with the corresponding corners of the inner shell respectively, and the two ends of a primary lead of the coil are fixedly connected with the corresponding primary lead-out CP needles respectively; the symmetrical secondary lead-out CP needles are fixedly connected with corresponding corners of the inner shell respectively, and the two ends of a secondary lead-out wire of the coil are fixedly connected with the corresponding secondary lead-out CP needles respectively. The utility model relates to the technical field of current transformers, in particular to a CP pin direct insertion type installation square shell. The technical problem to be solved by the utility model is to provide the CP pin direct-insertion type mounting square shell, primary and secondary circuits adopt CP pin leads, direct plugboard mounting can be realized, and the operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of current transformer technology, specifically a CP pin direct-insertion mounting square housing. Background Technology

[0002] Current transformers are essential devices in power systems used for measurement and protection. Operating based on the principle of electromagnetic induction, they proportionally convert high current into low current. A current transformer consists of a primary winding (few turns) and a secondary winding (many turns). The primary winding is connected in series in the circuit being measured, while the secondary winding is connected to the measuring instrument or protection device. When a large current flows through the primary winding, an alternating magnetic flux is generated in the iron core, inducing a proportionally reduced current in the secondary winding.

[0003] Existing products use copper sheets to lead out and weld copper pillars or screws for primary installation. The welding process is complicated and difficult, while the screw connection may result in screws not being tightened properly or stripping, causing poor contact during installation. The secondary side uses stranded flexible wires for lead-out, which is cumbersome to install, difficult to operate, and time-consuming.

[0004] Currently, there is a missing product that uses CP pin leads for primary and secondary circuits, allowing for direct board installation and easier operation. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a CP pin direct insertion type mounting square shell, which uses CP pin leads for primary and secondary stages, and can be directly inserted into the board for easy operation.

[0006] This utility model achieves its purpose through the following technical solution:

[0007] A CP pin direct-insertion mounting square housing, characterized by comprising: an outer shell; a coil mounted within the outer shell; an inner shell matching the outer shell; symmetrical primary lead-out CP pins, each fixedly connected to a corresponding corner of the inner shell, with both ends of the primary lead of the coil fixedly connected to the corresponding primary lead-out CP pin; and symmetrical secondary lead-out CP pins, each fixedly connected to a corresponding corner of the inner shell, with both ends of the secondary lead of the coil fixedly connected to the corresponding secondary lead-out CP pin. The primary and secondary lead-out CP pins can be directly mounted onto a PCB board, effectively reducing the space occupied by the product within the outer shell and improving the space utilization rate within the outer shell. The finished product will no longer require soldering copper pillars or screw locking processes, effectively saving labor costs and improving production capacity and efficiency.

[0008] As a further limitation of this technical solution, the outer shell is fixedly connected to at least one locking block, and the inner shell is provided with a locking slot corresponding to the locking block. By using the locking block and the locking slot in cooperation, a stable connection between the inner shell and the outer shell is achieved.

[0009] As a further limitation of this technical solution, the top of the card block is sloped, which facilitates the placement of the inner shell into the outer shell.

[0010] As a further limitation of this technical solution, triangular positioning posts are fixedly connected to the four corners of the outer shell to achieve the positioning of the inner shell along the height direction.

[0011] As a further limitation of this technical solution, the outer shell and the inner shell are fitted with an interference fit to achieve a stable connection between the two.

[0012] Compared with related technologies, the CP pin direct insertion type mounting square shell provided by this utility model has the following beneficial effects:

[0013] By integrating a low-current current transformer (CT) into a single unit, it can be directly mounted onto the PCB board, effectively reducing the space occupied by the product within the casing and improving the utilization rate of the internal space. The finished product will no longer require soldering copper pillars or screw locking processes, effectively saving labor costs and improving production capacity and efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a partial exploded view of the present invention;

[0016] Figure 3 This is a partial three-dimensional structural diagram of the present invention.

[0017] Figure 4 This is an existing method for leading out and installing primary copper sheets.

[0018] In the diagram: 1. Outer shell, 2. Inner shell, 3. Primary lead CP pin, 4. Primary lead wire, 5. Coil, 6. Locking block, 7. Triangular positioning post, 8. Secondary lead wire, 9. Secondary lead CP pin, 10. Slot. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1: A CP pin direct-insertion mounting square housing includes: an outer shell 1; a coil 5 installed inside the outer shell 1; an inner shell 2 matched to the outer shell 1; symmetrical primary lead-out CP pins 3, each fixedly connected to a corresponding corner of the inner shell 2, with the two ends of the primary lead 4 of the coil 5 respectively fixedly connected to the corresponding primary lead-out CP pin 3; and symmetrical secondary lead-out CP pins 9, each fixedly connected to a corresponding corner of the inner shell 2, with the two ends of the secondary lead 8 of the coil 5 respectively fixedly connected to the corresponding secondary lead-out CP pin 9. The primary lead-out CP pins 3 and secondary lead-out CP pins 9 can be directly installed onto a PCB board, effectively reducing the space occupied by the product within the outer shell 1 and improving the space utilization rate within the outer shell 1. The finished product will no longer require soldering copper pillars or screw locking processes, effectively saving labor costs and improving production capacity and efficiency.

[0021] The four corners of the outer shell 1 are fixedly connected to triangular positioning posts 7 to achieve positioning of the inner shell 2 along the height direction.

[0022] The outer shell 1 and the inner shell 2 are fitted with an interference fit to achieve a stable connection between them.

[0023] Example 2: This example further elaborates on Example 1. The outer shell 1 is fixedly connected to at least one locking block 6, and the inner shell 2 is provided with a locking groove 10 corresponding to the locking block 6. By using the locking block 6 and the locking groove 10 in cooperation, a stable connection between the inner shell 2 and the outer shell 1 is achieved.

[0024] The top of the card block 6 is sloping, which makes it easy to place the inner shell 2 into the outer shell 1.

[0025] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A CP pin direct-insertion mounting square housing, characterized in that, include: Outer shell (1); The coil (5) is installed inside the outer casing (1); Inner shell (2), matching the outer shell (1); Symmetrical primary lead-out CP pins (3) are fixedly connected to one corner of the inner shell (2), and the two ends of the primary lead (4) of the coil (5) are fixedly connected to the corresponding primary lead-out CP pins (3). Symmetrical secondary lead-out CP pins (9) are fixedly connected to one corner of the inner shell (2), and the two ends of the secondary lead-out wire (8) of the coil (5) are fixedly connected to the corresponding secondary lead-out CP pins (9).

2. The CP pin direct-insertion mounting square housing according to claim 1, characterized in that: The outer shell (1) is fixedly connected to at least one locking block (6), and the inner shell (2) is provided with a locking slot (10) corresponding to the locking block (6).

3. The CP pin direct-insertion mounting square housing according to claim 2, characterized in that: The top of the card block (6) is a slope.

4. The CP pin direct-insertion mounting square housing according to claim 1, characterized in that: The four corners of the outer shell (1) are respectively fixedly connected to triangular positioning posts (7).

5. The CP pin direct-insertion mounting square housing according to claim 1, characterized in that: The outer shell (1) and the inner shell (2) are fitted with an interference fit.

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