A current transformer

Abstract

A current transformer includes a housing, conductive leads, and fixed leads connected to the housing via fixed positions. The current transformer is mounted on a circuit board via the conductive and fixed leads. By utilizing the fact that the conductive and fixed leads are not on the same straight line, the problem of the leads being easily bent under stress is mitigated, thus improving the installation stability of the current transformer. The coil is electrically connected to the conductive leads, which can be used for electrical connection to the circuit board. Furthermore, the coil can be electrically connected to the circuit board via the conductive leads to achieve the signal output of the current transformer. The fixed leads serve to cooperate with the conductive leads to stabilize the connection structure of the current transformer. In addition, the conductive and fixed leads can use the same specifications, reducing manufacturing costs. Furthermore, the corresponding number of conductive leads can be inserted into the fixed positions according to the circuit design requirements, and the corresponding number of fixed leads can be inserted into the fixed positions according to the structural stability requirements, offering high flexibility and wide applicability.

Description

Technical Field

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

[0002] A current transformer is a sensor designed based on the principle of electromagnetic induction, used to measure alternating current. A current transformer has several pins that are electrically connected to a coil, which are fixedly mounted on a circuit board. The coil is electrically connected to the circuit board through these pins. However, for ease of circuit board layout, all pins are located on the same straight line. This makes the current transformer susceptible to bending under stress, causing it to tilt and potentially leading to pin detachment. This results in poor fixation of the current transformer. Utility Model Content

[0003] The purpose of this invention is to provide a current transformer that improves the problem of the pins being easily bent when the current transformer is under stress, and enhances the fixing effect of the current transformer.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A current transformer includes a housing with a mounting cavity containing a coil. The housing has at least three fixed positions. The current transformer also includes at least three pins, one end of each pin being inserted into a fixed position and the other end of each pin being located outside the housing. Some of the pins are conductive pins, and the remaining pins are fixed pins. The conductive pins and the fixed pins inserted into the fixed positions are not coaxial. The coil is electrically connected to the conductive pins.

[0006] Furthermore, the conductive pin includes a first conductive connection position and a second conductive connection position; the fixed pin includes a first fixed connection position and a second fixed connection position, the first conductive connection position and the first fixed connection position are connected to the fixed position, and the ends of the second conductive connection position and the second fixed connection position protrude from the housing.

[0007] Furthermore, the fixing position includes a first fixing groove A and a second fixing groove A that are not coaxially arranged, the first conductive connection position is inserted into the first fixing groove A, and the first fixing connection position is inserted into the second fixing groove A.

[0008] Furthermore, the side wall of the first fixing groove A is provided with an opening communicating with the mounting cavity.

[0009] Furthermore, the first conductive connection position and / or the first fixed connection position are provided with a plurality of anti-slip parts.

[0010] Furthermore, the anti-slip part is a groove or a protrusion.

[0011] Furthermore, the fixing position also includes a first fixing groove B and a second fixing groove B, the first fixing groove B being connected to the first fixing groove A, the second fixing groove B being connected to the second fixing groove A, the second conductive connection position being installed in the first fixing groove B, and the second fixing connection position being installed in the second fixing groove B.

[0012] Furthermore, it includes two conductive pins and two fixed pins, which are respectively disposed on both sides of the housing.

[0013] Furthermore, the opening of the mounting cavity is provided with a cover for covering the mounting cavity, and the cover is provided with a side cover for covering the groove opening of the first fixing groove A.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model proposes a current transformer, comprising a housing, conductive pins, and fixed pins connected to the housing via fixed positions. The current transformer is mounted on a circuit board via the conductive pins and fixed pins. By utilizing the fact that the conductive pins and fixed pins are not on the same straight line, the problem of the current transformer pins being easily bent under stress is improved, thus enhancing the installation stability of the current transformer. The coil is electrically connected to the conductive pins, which can be used for electrical connection with the circuit board. Furthermore, the coil can be electrically connected to the circuit board via wire pins to achieve the signal output of the current transformer. The fixed pins serve to cooperate with the conductive pins to stabilize the connection structure of the current transformer. In addition, the conductive pins and fixed pins can use the same specifications, reducing manufacturing costs. Furthermore, a corresponding number of wire pins can be inserted into the fixed positions according to the circuit design requirements, and a corresponding number of fixed pins can be inserted into the fixed positions according to the structural stability requirements, resulting in high flexibility and wider applicability.

[0016] 2. The present invention proposes a current transformer with a first fixed slot A and a second fixed slot A, a first conductive connection position installed in the first fixed slot A, and a first fixed connection position installed in the second fixed slot A. The side wall of the first fixed slot A is provided with an opening communicating with the mounting cavity, so as to facilitate the connection of the first conductive connection position and the first fixed connection position to the housing.

[0017] 3. The current transformer proposed in this utility model has a first conductive connection position and / or an anti-slip part to increase the friction between the first conductive position, the wire and the first fixing groove A. The first fixed connection position is provided with an anti-slip part to increase the friction between it and the second fixing groove A, thereby improving installation reliability and further reducing the risk of pins falling off.

[0018] 4. The present invention proposes a current transformer, wherein the fixing position includes a first fixing slot B and a second fixing slot B, a second conductive connection position is installed in the first fixing slot B, and a second fixed connection position is installed in the second fixing slot B. Through the synergistic effect of the first fixing slot A and the first fixing slot B, and the second fixing slot A and the second fixing slot B, the conductive pin and the fixed pin are fixed to the housing, thereby further improving the firmness of the pin installation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0020] Figure 1 This is a schematic diagram of a current transformer according to the present invention;

[0021] Figure 2 This is a schematic diagram of a current transformer according to the present invention (cover omitted);

[0022] Figure 3 This is a schematic diagram of a current transformer according to the present invention (housing omitted);

[0023] Figure 4 This is a schematic diagram of the housing of a current transformer according to the present invention;

[0024] Figure 5 This is an exploded view of a current transformer according to the present invention;

[0025] Figure 6 This is a front view of a current transformer according to the present invention;

[0026] Figure 7 for Figure 6 A cross-sectional view along the AA direction;

[0027] In the figure, 10 is the housing; 101 is the mounting cavity; 1021 is the first fixing groove A; 1022 is the first fixing groove B; 1023 is the opening; 1031 is the second fixing groove A; 1032 is the second fixing groove B; 20 is the coil; 30 is the conductive pin; 301 is the first conductive connection position; 302 is the second conductive connection position; 40 is the fixing pin; 401 is the first fixing connection position; 402 is the second fixing connection position; 403 is the anti-slip part; 50 is the cover; 501 is the side cover; and 60 is the lead wire. Detailed Implementation

[0028] The following is combined with Figures 1-7This utility model will be described in detail.

[0029] A type of current transformer, such as Figure 1 and Figure 2 As shown, the device includes a housing 10, which has a mounting cavity 101. A coil 20 is disposed in the mounting cavity 101. The housing 10 has at least three fixed positions. The current transformer also includes at least three pins. One end of the pin is inserted into the fixed position, and the other end of the pin is located outside the housing 10. Some of the pins are conductive pins 30, and the remaining pins are fixed pins 40. The conductive pins 30 and the fixed pins 40 are not coaxially arranged at the ends inserted into the fixed positions. The coil 20 is electrically connected to the conductive pins 30 through a lead 60.

[0030] Therefore, the current transformer is mounted on the circuit board via conductive pins 30 and fixed pins 40. By utilizing the fact that conductive pins 30 and fixed pins 40 are not on the same straight line, the problem of the current transformer pins being easily bent under stress is mitigated, thus improving the installation stability of the current transformer. The coil 20 is electrically connected to the conductive pins 30, which can be used for electrical connection with the circuit board. Furthermore, the coil 20 can achieve the signal output of the current transformer through the electrical connection of the wire pins to the circuit board. The fixed pins 40 serve to cooperate with the conductive pins 30 to stabilize the connection structure of the current transformer. In addition, conductive pins 30 and fixed pins 40 can use the same specifications, reducing manufacturing costs. Moreover, a corresponding number of wire pins can be inserted at the fixed position according to the circuit design requirements, and a corresponding number of fixed pins 40 can be inserted at the fixed position according to the structural stability requirements, offering high flexibility and wider applicability.

[0031] In this embodiment, as Figure 3 As shown, the conductive pin 30 includes a first conductive connection position 301 and a second conductive connection position 302, with a first included angle between the first conductive connection position 301 and the second conductive connection position 302; the fixed pin 40 includes a first fixed connection position 401 and a second fixed connection position 402, with a second included angle between the first fixed connection position 401 and the second fixed connection position 402. The first conductive connection position 301 and the first fixed connection position 401 are connected to the housing 10, and the ends of the second conductive connection position 302 and the second fixed connection position 402 protrude from the housing 10. In actual applications, both the first included angle and the second included angle are 90 degrees. Therefore, compared to conventional pins, the L-shaped conductive pin 30 and the fixed pin 40, with their portion embedded in the housing 10, can hang the pin on the housing 10, thereby preventing the pin from falling off the housing 10 during installation.

[0032] In this embodiment, as Figure 6 and Figure 7As shown, the fixing position includes a non-coaxial first fixing groove A1021 and a second fixing groove A1031. A first conductive connection 301 is inserted into the first fixing groove A1021, and a first fixing connection 401 is inserted into the second fixing groove A1031. The sidewalls of the first fixing groove A1021 and the second fixing groove A1031 are provided with openings 1023 communicating with the mounting cavity 101, facilitating the installation of the first conductive connection 301 and the first fixing connection 401. The first conductive connection 301 and / or the first fixing connection 401 are provided with a plurality of anti-slip portions 403, which are grooves formed by a texturing process; in other embodiments, the anti-slip portions 403 may also be protrusions. Specifically, the first conductive connection position 301 is provided with an anti-slip part 403 to increase the friction between the first conductive connection position 301, the wire and the first fixing groove A1021. The first fixed connection position 401 is provided with an anti-slip part 403 to increase the friction between it and the first fixing groove B1022, improve installation reliability and further reduce the risk of pins falling off.

[0033] In this embodiment, as Figure 4 As shown, the fixing position also includes a first fixing groove B1022 and a second fixing groove B1032. The first fixing groove B1022 is connected to the first fixing groove A1021, and the second fixing groove B1032 is connected to the second fixing groove A1031. The first fixing groove A1021 and the first fixing groove B1022, as well as the second fixing groove A1031 and the second fixing groove B1032, form a third included angle. The third included angle is adapted to the first included angle and the second included angle, so that the second conductive connection position 302 and the second fixed connection position 402 are respectively installed in the first fixing groove B1022 and the second fixing groove B1032. Through the synergistic effect of the first fixing groove A1021 and the first fixing groove B1022, and the second fixing groove A1031 and the second fixing groove B1032, the conductive pin 30 and the fixed pin 40 are fixed to the housing 10, further improving the firmness of the pin installation.

[0034] In this embodiment, two conductive pins 30 and two fixed pins 40 are included. The conductive pins 30 and the fixed pins 40 are respectively disposed on both sides of the housing 10 to increase the connection stability between the current transformer and the circuit board.

[0035] In this embodiment, as Figure 5 As shown, a cover 50 is provided at the opening 1023 of the mounting cavity 101 to cover the mounting cavity 101, and the cover 50 is provided with a side cover 501 to cover the opening of the first fixing groove A1021 to ensure electrical safety.

[0036] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand and implement the content of this utility model. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A current transformer, comprising a housing, wherein the housing has a mounting cavity, and a coil is disposed within the mounting cavity, characterized in that, The housing has at least three fixed positions, and the current transformer also includes at least three pins. One end of each pin is inserted into the fixed position, and the other end of the pin is located outside the housing. Some of the pins are conductive pins, and the rest are fixed pins. The conductive pins and the fixed pins are not coaxially arranged at the ends inserted into the fixed positions. The coil is electrically connected to the conductive pins.

2. A current transformer as described in claim 1, characterized in that, The conductive pin includes a first conductive connection position and a second conductive connection position; the fixed pin includes a first fixed connection position and a second fixed connection position, the first conductive connection position and the first fixed connection position are connected to the fixed position, and the ends of the second conductive connection position and the second fixed connection position protrude from the housing.

3. A current transformer as described in claim 2, characterized in that, The fixing position includes a first fixing groove A and a second fixing groove A that are not coaxially arranged. The first conductive connection position is inserted into the first fixing groove A, and the first fixing connection position is inserted into the second fixing groove A.

4. A current transformer as described in claim 3, characterized in that, The side wall of the first fixing groove A is provided with an opening that communicates with the mounting cavity.

5. A current transformer as described in claim 2, characterized in that, The first conductive connection position and / or the first fixed connection position are provided with a plurality of anti-slip parts.

6. A current transformer as described in claim 5, characterized in that, The anti-slip part is a groove or a convex part.

7. A current transformer as described in claim 3, characterized in that, The fixing position further includes a first fixing groove B and a second fixing groove B. The first fixing groove B is connected to the first fixing groove A, and the second fixing groove B is connected to the second fixing groove A. The second conductive connection position is installed in the first fixing groove B, and the second fixing connection position is installed in the second fixing groove B.

8. A current transformer as described in any one of claims 1-7, characterized in that, It includes two conductive pins and two fixed pins, which are respectively disposed on both sides of the housing.

9. A current transformer as described in claim 3, characterized in that, The opening of the mounting cavity is provided with a cover for covering the mounting cavity, and the cover is provided with a side cover for covering the groove of the first fixing groove A.

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