CN-224217313-U - CP needle direct insertion type installation square shell

Abstract

The utility model discloses a direct-insertion type installation square shell of a CP (control program) needle, which comprises an outer shell, a coil, an inner shell, symmetrical primary lead-out CP needles, symmetrical secondary lead-out CP needles and corresponding secondary lead-out CP needles, wherein the coil is installed in the outer shell, the inner shell is matched with the outer shell, the symmetrical primary lead-out CP needles are respectively and fixedly connected with corresponding corners of the inner shell, two ends of a primary lead of the coil are respectively and fixedly connected with the corresponding primary lead-out CP needles, the symmetrical secondary lead-out CP needles are respectively and fixedly connected with corresponding secondary lead-out CP needles. The utility model relates to the technical field of current transformers, in particular to a direct-insertion type installation square shell of a CP needle. The utility model aims to solve the technical problem of providing the direct insertion type installation square shell for the CP pins, wherein the lead of the CP pins is changed for the primary and the secondary, and the direct insertion plate installation is realized during installation, so that the operation is convenient.

Inventors

• SHI LU
• SUN SHAOPING

Assignees

• 深圳市康定通安电子有限公司

Dates

Publication Date

20260508

Application Date

20250422

Claims (5)

1. 1. The utility model provides a CP needle direct insertion formula installation side shell which characterized in that includes: An outer case (1); a coil (5) mounted in the outer case (1); an inner housing (2) matching the outer housing (1); Symmetrical primary leading-out CP needles (3) are respectively and fixedly connected with corresponding corners of the inner shell (2), and two ends of a primary lead (4) of the coil (5) are respectively and fixedly connected with the corresponding primary leading-out CP needles (3); And the symmetrical secondary lead-out CP needles (9) are respectively and fixedly connected with one corner corresponding to the inner shell (2), and two ends of the secondary lead-out wire (8) of the coil (5) are respectively and fixedly connected with the corresponding secondary lead-out CP needles (9).
2. 2. The CP needle direct insertion type installation square shell according to claim 1 is characterized in that at least one clamping block (6) is fixedly connected to the outer shell (1), and a clamping groove (10) is formed in the inner shell (2) corresponding to the clamping block (6).
3. 3. The CP pin direct insertion type installation square shell according to claim 2, wherein the top of the clamping block (6) is an inclined plane.
4. 4. The CP needle direct insertion type installation square shell according to claim 1 is characterized in that four corners of the outer shell (1) are fixedly connected with triangular positioning columns (7) respectively.
5. 5. The CP needle in-line installation square shell according to claim 1, wherein the outer shell (1) and the inner shell (2) are in interference fit.

Description

CP needle direct insertion type installation square shell Technical Field The utility model relates to the technical field of current transformers, in particular to a direct-insertion type installation square shell of a CP needle. Background The current transformer is an important device for measurement and protection in a power system, works based on the electromagnetic induction principle and can convert high current into low current in proportion. The current transformer consists of a primary winding (with fewer turns) and a secondary winding (with more turns), wherein the primary winding is connected in series in a tested circuit, and the secondary winding is connected with a measuring instrument or a protection device. When a large current is passed through the primary winding, alternating magnetic flux is generated in the core, inducing a scaled down current in the secondary winding. The prior product adopts a copper sheet for primary extraction and welding of copper columns or screw locking installation, the operation of the butt welding process is complicated and difficult, the screw locking and the in-place screwing possibly can be generated due to the connection in a screw beating mode, and the screw slides, so that poor installation contact is caused. The secondary side is led out by adopting flexible wires, complicated installation and difficult time and labor waste in operation. At present, a product is lacking, a CP contact pin lead is used for primary and secondary, and the installation can be directly carried out by inserting plates, so that the operation is convenient. Disclosure of utility model The utility model aims to solve the technical problem of providing the direct insertion type installation square shell for the CP pins, wherein the lead of the CP pins is changed for the primary and the secondary, and the direct insertion plate installation is realized during installation, so that the operation is convenient. The utility model adopts the following technical scheme to realize the aim of the utility model: a direct insertion type installation square shell of a CP needle is characterized by comprising an outer shell, a coil, an inner shell, symmetrical primary leading-out CP needles and symmetrical secondary leading-out CP needles, wherein the coil is installed in the outer shell, the inner shell is matched with the outer shell, the symmetrical primary leading-out CP needles are respectively and fixedly connected with corresponding corners of the inner shell, two ends of a primary lead of the coil are respectively and fixedly connected with corresponding primary leading-out CP needles, the symmetrical secondary leading-out CP needles are respectively and fixedly connected with corresponding corners of the inner shell, and two ends of a secondary leading-out wire of the coil are respectively and fixedly connected with corresponding secondary leading-out CP needles. The primary leading-out CP needle and the secondary leading-out CP needle can be directly arranged on the PCB, so that the product occupied by the outer shell space is effectively reduced, and the utilization rate of the outer shell space is improved. The finished product will not need to weld copper column or screw locking process any more, effectively save the cost of labor, productivity and efficiency are also improved. As a further limitation of the technical scheme, the outer shell is at least fixedly connected with a clamping block, and the inner shell is provided with a clamping groove corresponding to the clamping block. Through adopting fixture block and draw-in groove cooperation, realize the stable connection of inner shell and shell. As a further limitation of the technical scheme, the top of the clamping block is an inclined plane, so that the inner shell is conveniently placed in the outer shell. As a further limitation of the technical scheme, the four corners of the outer shell are respectively fixedly connected with the triangular positioning columns, so that the inner shell is positioned along the height direction. As a further limitation of the technical scheme, the outer shell and the inner shell are in interference fit, so that stable connection of the outer shell and the inner shell is realized. Compared with the related art, the direct insertion type installation square shell of the CP needle has the following beneficial effects: The small current CT is integrated, the plug-in can be directly installed on the PCB, the space occupied by the product in the outer shell is effectively reduced, and the space utilization rate in the outer shell is improved. The finished product will not need to weld copper column or screw locking process any more, effectively save the cost of labor, productivity and efficiency are also improved. Drawings FIG. 1 is a schematic perspective view of the present utility model; FIG. 2 is a partial exploded view of the present utility model; fig. 3 is a schematic view of a partial