A current transformer winding

Abstract

The utility model provides a current transformer winding belongs to current transformer technical field, the utility model provides a current transformer winding includes magnetic circuit system, coil and pin, the coil is around the magnetic circuit system, the pin is fixed in the inner ring surface of magnetic circuit system and extends along the first direction, the number of pin is two, the pin is mutually spaced, and the two wire ends of coil one -to -one with two pin connection is used for realizing the circuit conduction of coil and external equipment, wherein, the first direction is the axial direction of magnetic circuit system. The utility model passes through the two end of pin fixed coil, has spared the operation of manual holding, can guarantee that the thread is not to be pulled apart or is to scratch the flower, can improve the finished product performance of winding.

Description

Technical Field

[0001] This utility model belongs to the field of current transformer technology, and specifically relates to a current transformer winding. Background Technology

[0002] A current transformer is an instrument that measures current by converting a large primary current into a small secondary current based on the principle of electromagnetic induction. The core component of a current transformer is the winding, which consists of a magnetic circuit system and coils wound around the periphery of the magnetic circuit system.

[0003] In related technologies, the coil is made of enameled wire. During the winding process, one end of the enameled wire is held manually, and the wire is wound manually to form a coil. After winding, the enameled wire is cut to complete the preparation of the winding. The manual holding method can easily cause the wire end to break or scratch, affecting the performance of the finished winding.

[0004] Therefore, it is necessary to provide a current transformer winding to solve the above problems. Utility Model Content

[0005] This utility model provides a current transformer winding that fixes the two ends of the coil with pins, eliminating the need for manual handling and ensuring that the wire ends are not torn or scratched. This improves the finished performance of the winding and effectively solves at least one of the technical problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the utility model is implemented as follows: A current transformer winding, comprising: A ring-shaped magnetic circuit system; A coil is wound on the magnetic circuit system; The pins are fixed to the inner annular surface of the magnetic circuit system and extend along a first direction. There are two pins, which are spaced apart from each other. The two terminals of the coil are connected to the two pins in a one-to-one correspondence to realize the circuit conduction between the coil and the external device. The first direction is the axial direction of the magnetic circuit system.

[0007] As a preferred improvement, the magnetic circuit system includes an annular magnetic core frame and a magnetic core sleeved around the magnetic core frame. The magnetic core frame includes a frame ring and a support plate extending outward from the outer ring of the frame ring. The support plate is located at any end of the frame ring, and the magnetic core is sleeved around the frame ring and abuts against the support plate.

[0008] As a preferred improvement, the inner ring surface of the skeleton ring is provided with a mounting boss, and the pin is fixed to the mounting boss.

[0009] As a preferred improvement, the skeleton ring, support plate, and mounting boss are integrally formed.

[0010] As a preferred improvement, the mounting boss is configured to correspond one-to-one with the pin.

[0011] As a preferred improvement, the orthographic projection of the mounting boss onto the inner annular surface of the skeleton ring body falls completely within the inner annular surface of the skeleton ring body.

[0012] As a preferred improvement, the outer ring surface of the skeleton ring body is formed with burr-like soft ribs.

[0013] As a preferred improvement, the mounting boss is provided with a mounting hole through the first direction, the middle position of the pin is inserted into the mounting hole and fixed to the mounting hole, and both ends are exposed outside the mounting hole, and the wiring terminal of the coil is connected to either end of the pin.

[0014] As a preferred improvement, the pin has a square cross-section, and the mounting hole has a matching cross-sectional shape.

[0015] As a preferred improvement, the coil is made of enameled wire.

[0016] The beneficial effects of this utility model are as follows: (1) Adding pins to the coil can fix the coil end during the winding process, which can reduce manual clamping operations, reduce the movement of the coil end during the winding process, and prevent it from being torn or scratched. (2) The mounting boss is used to fix the pin. The mounting boss is located in the inner ring through hole of the winding, which can reduce the occupation of the radial space of the outer ring and ensure the compactness of the overall structure of the winding. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 A three-dimensional structural schematic diagram of the current transformer winding provided by this utility model; Figure 2 express Figure 1 The diagram shows a three-dimensional view of the current transformer winding from another angle. Figure 3 express Figure 1 The diagram shown is an exploded view of the current transformer winding. Detailed Implementation

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.

[0019] Please refer to the following: Figure 1 - Figure 3 This utility model provides a current transformer winding, including a magnetic circuit system 21, a coil 22, and pins 23.

[0020] The magnetic circuit system 21 is a ring structure, including a ring-shaped magnetic core skeleton 211 and a magnetic core 212 sleeved on the magnetic core skeleton 211. The magnetic core skeleton 211 includes a skeleton ring body 2111 and a support plate 2112 extending outward from the outer ring surface of the skeleton ring body 2111. The support plate 2112 is located at any end of the skeleton ring body 2111. The magnetic core 212 is sleeved on the periphery of the skeleton ring body 2111 and abuts against the support plate 2112.

[0021] The support plate 2112 serves two purposes: firstly, it positions the magnetic core 212 during installation, indicating that the magnetic core 212 is in place when it comes into contact with the support plate 2112; secondly, it limits the magnetic core 212 after installation to prevent it from detaching from the end.

[0022] Furthermore, the outer ring surface of the skeleton ring 2111 is also formed with protruding burr soft ribs 2113. When the magnetic core 212 is assembled, the burr soft ribs 2113 can be crushed to compensate for the product manufacturing tolerance, so that the magnetic core 212 and the skeleton ring 2111 can fit tightly together, further improving the reliability of the assembly.

[0023] The coil 22 is wound on the magnetic circuit system 21, and the winding method adopts conventional techniques in the art. The skeleton coil 2111 can provide bidirectional radial restraint for the magnetic core 212, and the support plate 2112 can provide unidirectional axial restraint for the magnetic core 212. Combined with the winding effect of the coil 22, the magnetic core 212 and the magnetic core skeleton 211 can be in close contact to ensure a reliable connection.

[0024] The inner ring surface of the skeleton ring 2111 is provided with a mounting boss 2114, which is used to fix the pin 23. The mounting boss 2114 is provided in a one-to-one correspondence with the pin 23.

[0025] The orthographic projection of the mounting boss 2114 onto the inner annular surface of the skeleton coil 2111 falls completely within the inner annular surface of the skeleton coil 2111, which can prevent the mounting boss 2114 from being exposed in the coverage area of ​​the skeleton coil 2111, ensuring the flatness of the overall appearance of the winding, and without requiring additional axial space.

[0026] Preferably, the skeleton ring 2111, the support plate 2112, the burr rib 2113, and the mounting boss 2114 are integrally formed from insulating material.

[0027] Specifically, the mounting boss 2114 has a mounting hole extending through it in the first direction. The middle position of the pin 23 is inserted into the mounting hole and fixed therewith, while both ends are exposed outside the mounting hole. The terminals of the coil 22 are connected to either end of the pin 23.

[0028] Preferably, the pin 23 has a square columnar structure, which can effectively prevent rotation at the contact position with the mounting boss 2114 and increase the connection stability with the mounting boss 2114. That is, the cross-section of the pin 23 is square, and the cross-sectional shape of the mounting hole matches it.

[0029] Specifically, the mounting boss 2114 has a mounting hole along the first direction. The cross-sectional shape of the mounting hole matches the cross-sectional shape of the pin 23. The middle position of the pin 23 is inserted into the mounting hole and fixed therewith, while both ends protrude outside the mounting hole. The terminals of the coil 22 are connected to either end of the pin 23. The pin 23 and the mounting hole are fitted with an interference fit, which, while providing a fixing function, also allows for vertical adjustment of the pin 23 along the first direction.

[0030] The coil 22 is made of enameled wire, and the pin 23 serves to connect the coil 22 to external devices.

[0031] The fabrication process of the current transformer winding includes the following steps: The magnetic core 22 is fitted onto the magnetic core frame 211, and then two pins 23 are fixed on the mounting boss 2114. One end of the enameled wire is fixed to any one of the pins 23. The coil 22 is wound manually or automatically. Then the enameled wire is cut off, and the other end of the enameled wire is fixed to another pin 23 to complete the preparation.

[0032] The embodiments of the utility model have been described above with reference to the accompanying drawings. However, the utility model is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the utility model without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the utility model.

Claims

1. A current transformer winding, characterized in that, include: A ring-shaped magnetic circuit system; A coil is wound on the magnetic circuit system; The pins are fixed to the inner annular surface of the magnetic circuit system and extend along a first direction. There are two pins, which are spaced apart from each other. The two terminals of the coil are connected to the two pins in a one-to-one correspondence to realize the circuit conduction between the coil and the external device. The first direction is the axial direction of the magnetic circuit system.

2. The current transformer winding according to claim 1, characterized in that, The magnetic circuit system includes an annular magnetic core skeleton and a magnetic core sleeved around the magnetic core skeleton. The magnetic core skeleton includes a skeleton ring and a support plate that protrudes outward from the outer ring of the skeleton ring. The support plate is located at any end of the skeleton ring. The magnetic core is sleeved around the skeleton ring and abuts against the support plate.

3. The current transformer winding according to claim 2, characterized in that, The inner ring surface of the skeleton ring is provided with a mounting boss, and the pin is fixed to the mounting boss.

4. The current transformer winding according to claim 3, characterized in that, The skeleton ring, support plate, and mounting boss are integrally formed.

5. The current transformer winding according to claim 3, characterized in that, The mounting bosses are configured to correspond one-to-one with the pins.

6. The current transformer winding according to claim 3, characterized in that, The orthographic projection of the mounting boss onto the inner annular surface of the skeleton ring falls completely within the inner annular surface of the skeleton ring.

7. The current transformer winding according to claim 2, characterized in that, The outer ring surface of the skeleton body has protruding burrs and soft ribs.

8. The current transformer winding according to claim 3, characterized in that, The mounting boss has a mounting hole extending through it in the first direction. The middle position of the pin is inserted into the mounting hole and fixed therewith. Both ends of the pin are exposed outside the mounting hole. The wiring terminal of the coil is connected to either end of the pin.

9. The current transformer winding according to claim 8, characterized in that, The pin has a square cross-section, and the mounting hole has a matching cross-sectional shape.

10. The current transformer winding according to claim 1, characterized in that, The coil is made of enameled wire.

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