Mutual inductor

Abstract

A mutual inductor belongs to the technical field of mutual inductors and comprises a shell, a connecting wire and a coil assembly, the coil assembly is installed in the shell, one end of the connecting wire is connected with the coil assembly, the other end of the connecting wire penetrates through the shell and extends outwards, the shell is composed of a bottom shell and a cover plate, a penetrating opening is formed in the middle of the shell, and the coil assembly is installed in a clamping groove in the bottom shell. The cover plate is connected with the threaded column located in the bottom shell through the screw, the strength of the whole structure is high, the coil assembly is clamped by the annular supporting plate and the annular piece, the overall stability is guaranteed, meanwhile, the screw on the cover plate can be installed in the counter bore, and the overall attractiveness is kept.

Description

Technical Field

[0001] This utility model belongs to the field of mutual inductor technology, specifically a mutual inductor. Background Technology

[0002] An instrument transformer is a device that proportionally transforms voltage or current. Its function is to convert high voltage or high current into standard low voltage (100V) or standard low current (5A or 10A, both referring to rated values) to facilitate the standardization and miniaturization of measuring instruments, protection devices, and automatic control equipment. Instrument transformers can also be used to isolate high-voltage systems to ensure the safety of personnel and equipment.

[0003] Currently, many current transformers have unstable internal coil assembly installations, poor overall aesthetics, are difficult to repair when damaged, and have limited installation options. Utility Model Content

[0004] 1. Technical problem to be solved by the utility model

[0005] The purpose of this invention is to solve the problems mentioned in the background.

[0006] 2. Technical Solution

[0007] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0008] The present invention relates to a current transformer, comprising a housing, connecting wires, and a coil assembly. The coil assembly is installed inside the housing. One end of the connecting wire is connected to the coil assembly, and the other end extends outward through the housing. The housing consists of a bottom shell and a cover plate. A through-hole is provided in the middle of the housing. The coil assembly is installed in a slot inside the bottom shell. The cover plate is connected to a threaded post located inside the bottom shell by screws.

[0009] Preferably, the slot is provided with multiple sets of annular support plates, and the cover plate is provided with annular pieces corresponding to the positions of the annular support plates. One side of the coil group is in contact with the annular support plate, and the other side is in contact with the annular piece.

[0010] Preferably, the cover plate is provided with a support post corresponding to the threaded post, and the support post is provided with a countersunk hole, through which the screw passes and connects to the threaded post.

[0011] Preferably, the bottom shell is provided with a wire outlet hole, and a conduit is provided inside the wire outlet hole, through which the connecting wire extends out from the wire outlet hole.

[0012] Preferably, the bottom shell is provided with wiring terminals, and the coil assembly and connecting wires are all connected to the wiring terminals.

[0013] Preferably, L-shaped grooves are provided at the four corners of the outer shell, and the L-shaped grooves run through the entire outer shell.

[0014] Preferably, the L-shaped groove is composed of two mutually perpendicular straight grooves, with the connecting plate passing through the different straight grooves for external installation.

[0015] Preferably, the inner side of the bottom shell is provided with a protruding structure that retaliates against the L-shaped groove, and the bottom of the threaded column is connected to the protruding structure.

[0016] Preferably, the bottom shell, threaded column, and protrusion structure are integrally molded.

[0017] Preferably, the thickness of the protruding structure is the same as the thickness of the annular support plate.

[0018] 3. Beneficial effects

[0019] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0020] This utility model discloses a current transformer with high overall structural strength. The coil group is held in place by an annular support plate and annular plate, ensuring overall stability. At the same time, the screws on the cover plate can be installed in the countersunk hole, maintaining the overall aesthetics. The design of the outlet tube ensures the verticality of the connecting wire outlet, avoiding damage caused by excessive bending and wear at the outlet hole. Furthermore, the connection is made possible by the terminal block, so even if the connecting wire is damaged, it can be easily replaced. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a current transformer according to the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a current transformer according to the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of an annular support plate for a current transformer according to the present invention.

[0024] Explanation of the labels in the diagram:

[0025] 100. Outer shell; 110. Bottom shell; 120. Cover plate; 130. Annular support plate; 140. Annular piece; 150. Threaded post; 160. Support post; 170. Conduit; 180. Terminal block; 190. L-shaped groove;

[0026] 200. Connecting wires;

[0027] 300, coil assembly. Detailed Implementation

[0028] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0031] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0032] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0033] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] Example 1

[0035] See attached document Figure 1-3 An instrument transformer according to this embodiment includes a housing 100, a connecting wire 200, and a coil assembly 300. The coil assembly 300 is installed inside the housing 100. One end of the connecting wire 200 is connected to the coil assembly 300, and the other end extends outward through the housing 100. The housing 100 is composed of a bottom shell 110 and a cover plate 120. A through opening is provided in the middle of the housing 100. The coil assembly 300 is installed in a slot inside the bottom shell 110. The cover plate 120 is connected to a threaded post 150 located inside the bottom shell 110 by screws.

[0036] In this embodiment, the slot is provided with multiple sets of annular support plates 130, and the cover plate 120 is provided with annular pieces 140 corresponding to the positions of the annular support plates 130. One side of the coil group 300 is in contact with the annular support plate 130, and the other side is in contact with the annular piece 140.

[0037] In this embodiment, the cover plate 120 is provided with a support post 160 corresponding to the threaded post 150. The support post 160 is provided with a countersunk hole, and the screw passes through the countersunk hole to connect with the threaded post 150.

[0038] In this embodiment, the bottom shell 110 is provided with a wire outlet hole, and a wire conduit 170 is provided inside the wire outlet hole. The connecting wire 200 passes through the wire conduit 170 and extends out from the wire outlet hole.

[0039] In this embodiment, the bottom shell 110 is provided with a terminal block 180, and the coil group 300 and the connecting wire 200 are all connected to the terminal block 180.

[0040] In this embodiment, the outer casing 100 is provided with L-shaped grooves 190 at its four corners. The L-shaped grooves 190 penetrate the entire outer casing 100, which facilitates installation in various ways.

[0041] In this embodiment, the L-shaped groove 190 is composed of two mutually perpendicular straight grooves, with the connecting plate passing through the different straight grooves for external installation.

[0042] In this embodiment, the inner side of the bottom shell 100 is provided with a protruding structure that retaliates against the L-shaped groove 190, and the bottom of the threaded post 150 is connected to the protruding structure.

[0043] In this embodiment, the bottom shell 100, the threaded column 150, and the protruding structure are integrally formed.

[0044] In this embodiment, the thickness of the protruding structure is the same as the thickness of the annular support plate 130.

[0045] The structure designed above has high overall strength. The coil group 300 is held in place by the annular support plate 130 and the annular piece 140, ensuring overall stability. At the same time, the screws on the cover plate 120 can be installed in the countersunk hole, maintaining the overall aesthetics. The design of the outlet tube 170 ensures the verticality of the outlet of the connecting wire 200, avoiding damage caused by excessive bending and wear at the outlet hole. Furthermore, the connection is made through the terminal block 180, so even if the connecting wire 200 is damaged, it can be easily replaced.

[0046] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A transformer, characterized by: The utility model provides a kind of induction coil, including shell (100), connecting wire (200) and coil group (300), the coil group (300) is installed in shell (100), one end of connecting wire (200) is connected coil group (300), the other end passes through shell (100) and extends outward, the shell (100) is composed of bottom shell (110) and cover plate (120), the middle part of the shell (100) is equipped with through port, the coil group (300) is installed in the clamping groove in bottom shell (110), the cover plate (120) is connected by screw thread column (150) in bottom shell (110) by screw thread column (150).

2. A transformer according to claim 1, characterised in that: The clamping groove is equipped with multiple sets of annular support plate (130), the cover plate (120) is equipped with annular sheet (140) corresponding with the position of annular support plate (130), one side of the coil group (300) is in contact with annular support plate (130), and the other side is in contact with annular sheet (140).

3. A transformer according to claim 1, characterised in that: The cover plate (120) is equipped with support column (160) corresponding with screw thread column (150), the support column (160) is equipped with counterbore, and the screw is connected with screw thread column (150) by passing through the counterbore.

4. A transformer according to claim 1, characterized in that: The bottom shell (110) is equipped with outlet hole, and the inner measure of the outlet hole is equipped with wire tube (170), and the connecting wire (200) passes through wire tube (170) and extends from the outlet hole.

5. A transformer according to claim 4, characterised in that: The bottom shell (110) is equipped with terminal (180), and the coil group (300) and connecting wire (200) are connected with terminal (180).

6. A transformer according to claim 1, characterized in that: The four corners of the shell (100) are equipped with L-shaped groove (190), and the L-shaped groove (190) penetrates the whole shell (100).

7. A transformer according to claim 6, characterised in that: The L-shaped groove (190) is composed of two mutually perpendicular straight grooves, and the different straight grooves pass through connecting plate for external installation.

8. A transformer according to claim 1, characterized in that: The inner side of the bottom shell (110) is equipped with protruding structure corresponding to L-shaped groove (190), and the bottom of screw thread column (150) is connected with the protruding structure.

9. A transformer according to claim 8, characterised in that: The bottom shell (110), screw thread column (150) and protruding structure are integrally formed.

10. A transformer according to claim 8, characterised in that: The thickness of the protruding structure is the same as the thickness of annular support plate (130).

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