CN112420356B - A dual-purpose power transformer - Google Patents

Abstract

The invention discloses a dual-purpose power transformer, which comprises a shell, wherein a transformer mechanism and a function switching mechanism are arranged in the shell, the transformer mechanism comprises a primary coil, a first secondary coil and a second secondary coil, the function switching mechanism comprises a direction regulating component and a connecting component, the connecting component is arranged at the output end of the direction regulating component and rotates around the output end, when the connecting component rotates to be between the first secondary coil and the second secondary coil and is simultaneously electrically connected with the first secondary coil and the second secondary coil, the first secondary coil and the second secondary coil are reversely connected in series, so that the transformer mechanism forms a differential transformer, the power transformer can realize the functions of a conventional transformer and the differential transformer, and does not need to be disconnected during the function switching process, the operation steps are simplified, and the misconnection phenomenon is avoided.

Description

A dual-purpose power transformer

technical field

The invention relates to the technical field of transformers, in particular to a dual-purpose power transformer.

Background technique

Differential transformer refers to a transformer device widely used in electronic technology and non-electricity detection. It is mainly used to measure non-electrical parameters such as displacement, pressure and vibration. It can be used for both static and dynamic measurements. A differential transformer consists of a primary coil and a secondary coil, and the secondary coil is divided into two parts with opposite polarities. When the AC voltage is applied to the primary coil, if the iron core is away from the center, the difference in electromotive force induced on the secondary coil will become larger as the iron core moves.

A differential transformer consists of a primary coil and a secondary coil, and the secondary coil is divided into two parts with opposite polarities. When the AC voltage is applied to the primary coil, if the iron core moves away from the center, the difference in the induced electromotive force on the secondary coil will become larger as the iron core moves.

The differential transformer in the prior art can only play a measurement role, and cannot be used as an ordinary transformer. If the ordinary transformer has the function of a differential transformer, it is necessary to connect the two secondary coils in reverse series, so it is necessary to adjust the internal components of the transformer. When the line is reconnected, the lines that need to be reconnected are many and complex, and the phenomenon of misconnection is easy to occur during the reconnection process.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a dual-purpose power transformer, so as to solve the problem that in the prior art, in order to make a common transformer have the function of a differential transformer, it is necessary to connect two secondary coils in reverse series, so it is necessary to connect the lines of the internal components of the transformer. For reconnection, the lines to be reconnected are many and complex, and the problem of misconnection is easy to occur during the reconnection process.

In order to solve the above-mentioned technical problems, the present invention specifically provides the following technical solutions:

A dual-purpose power transformer, comprising a casing, a transformer mechanism for realizing the functions of a conventional transformer and a differential transformer is arranged in the casing, and a connection mode of components in the transformer mechanism is changed to make the transformer mechanism A function conversion mechanism that realizes the functions of conventional transformers and differential transformers respectively;

The transformer mechanism includes a first frame body and a second frame body arranged in the casing, a first iron core is arranged in the first frame body, a second iron core is arranged in the second frame body, and the second iron core is arranged in the second frame body. A primary coil is wound on the first iron core, and a first secondary coil and a second secondary coil are wound on the second iron core;

The function conversion mechanism includes a steering component and a connecting component, the connecting component is arranged at the output end of the steering component and rotates around the output end, and the connecting component rotates to connect with the first secondary coil and the first secondary coil and rotates around the output end. When the second secondary coils are electrically connected with the first secondary coil and the second secondary coil at the same time, the first secondary coil and the second secondary coil are connected in reverse series , so that the transformer mechanism constitutes a differential transformer.

As a preferred solution of the present invention, the first frame body and the second frame body have the same structure and are in a trough shape, and the first frame body and the first frame body are symmetrically arranged in the casing , the frame openings of the first frame body and the second frame body are opposite to each other, and there is a gap between the first frame body and the second frame body, and the gap is used for the detection of the passing of the moving body to be tested. A channel, the casing is provided with a through hole corresponding to the detection channel.

As a preferred solution of the present invention, both ends of the primary coil are respectively provided with a first fixed end and a second fixed end, and the inner wall of the first frame body is provided with a first terminal and a second terminal, The first fixed end and the first terminal correspond in position and are connected by a conductive rod, and the second fixed end and the second terminal correspond in position and are connected by a conductive rod.

As a preferred solution of the present invention, both ends of the first secondary coil are respectively provided with a third fixed end and a fourth fixed end, and the inner wall of the second frame body is provided with a third terminal and a fourth A terminal, the third fixed terminal corresponds to the third terminal in position and is connected by a conductive rod, and the fourth fixed terminal corresponds to the fourth terminal in position.

As a preferred solution of the present invention, both ends of the second secondary coil are respectively provided with a fifth fixed end and a sixth fixed end, and the inner wall of the second frame body is provided with a fifth terminal and a sixth A terminal, the fifth fixed end corresponds to the fifth terminal in position and is connected by a conductive rod, and the sixth fixed end corresponds to the sixth terminal in position.

As a preferred solution of the present invention, the direction adjusting component includes a conversion shaft fixed on the inner wall of the second frame through a bearing, the conversion shaft penetrates through the second frame and the casing, and extends To the outside of the housing, a steering cross bar is provided outside the housing, and the steering cross bar is connected with the conversion shaft.

As a preferred solution of the present invention, the connecting member includes a connecting cross plate and a connecting cross bar, the connecting cross bar is arranged on the surface of the connecting cross plate, and the connecting cross plate and the connecting cross bar are both connected with The axes of the second iron core are parallel, the two ends of the connecting horizontal plate are respectively connected with a first connecting vertical rod and a second connecting vertical rod, and the two ends of the connecting horizontal rod are respectively vertically connected with a third connecting vertical rod and the fourth connecting vertical rod.

As a preferred solution of the present invention, the conductive rod, the first connecting vertical rod, the second connecting vertical rod, the connecting horizontal rod, the third connecting vertical rod and the fourth connecting vertical rod The rods are all conductive structures, and the conversion shaft and the connecting transverse plate are insulating structures.

As a preferred solution of the present invention, when the function conversion mechanism is in an initial state, the first connecting vertical rod is located between the fourth fixed end and the fourth terminal, and the first connecting rod is located between the fourth fixed end and the fourth terminal. One end of the connecting vertical rod is in contact with the fourth fixed end and is electrically connected, and the other end is in contact with and electrically connected with the fourth terminal, and the second connecting vertical rod is located at the sixth fixed end and the first connecting rod. between the six terminals, and one end of the second connecting vertical rod is in contact with the sixth fixed end and is electrically connected, and the other end is in contact with and electrically connected with the sixth terminal;

At the same time, the third connecting vertical rod is located at the first secondary coil, and between the third connecting vertical rod and the third fixed end, the third connecting vertical rod and the fourth fixed end There is no contact between the ends, the fourth connecting vertical rod is located at the second secondary coil, and between the fourth connecting vertical rod and the fifth fixed end, the fourth connecting vertical rod and the There is no contact between the sixth fixed ends.

As a preferred solution of the present invention, after the rotation of the rotating shaft is converted, the function conversion mechanism enters the second state, and the first connection vertical rod is located at the second secondary coil at this time, and the first connection There is no contact between the vertical rod and each terminal, and between the first connecting vertical rod and each fixed end, the second connecting vertical rod is located at the first secondary coil, and the second connecting vertical rod is located at the first secondary coil. There is no contact with each terminal, and between the second connecting vertical rod and each fixed end;

The third connecting vertical rod is located at the second secondary coil, and the third connecting vertical rod is in contact with the sixth fixed end and is electrically connected, and the fourth connecting vertical rod is located at the first at the stage coil, and the fourth connection vertical rod is in contact with and electrically connected to the fourth fixed end.

Compared with the prior art, the present invention has the following beneficial effects:

In the present invention, by setting a function conversion mechanism, the connection relationship between the fourth fixed end, the fourth terminal, the fourth fixed end and the sixth fixed end can be changed by rotating the conversion shaft, so that the first secondary coil and the second secondary coil can be changed. The coils are connected in reverse series, so that the transformer mechanism changes from realizing the function of ordinary voltage transformer to realizing the function of differential voltage transformer. The above conversion process does not need to reconnect the wires, so it can be completed quickly, and at the same time, the misconnection that may occur during the reconnection process is avoided. , simplify the operation steps and improve work efficiency.

Description of drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that are required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, other implementation drawings can also be obtained according to the extension of the drawings provided without creative efforts.

1 is a schematic structural diagram of a dual-purpose power transformer according to an embodiment of the present invention;

2 is a schematic structural diagram of a first frame body in an embodiment of the present invention;

3 is a schematic structural diagram of a second frame body in an embodiment of the present invention;

4 is a schematic structural diagram of a function conversion mechanism in an embodiment of the present invention;

5 is a schematic structural diagram of the function conversion mechanism in the second state according to the embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a conductive rod in an embodiment of the present invention.

The symbols in the figure are as follows:

1. Shell; 2. Transformer mechanism; 3. Function conversion mechanism;

201, the first frame; 202, the second frame; 203, the first core; 204, the second core; 205, the primary coil; 206, the first secondary coil; 207, the second secondary coil; 208 , detection channel; 209, through hole; 210, first fixed end; 211, second fixed end; 212, first terminal; 213, second terminal; 214, conductive rod; 215, third fixed end; 216 217, the third terminal; 218, the fourth terminal; 219, the fifth fixed terminal; 220, the sixth fixed terminal; 221, the fifth terminal; 222, the sixth terminal;

31. Directional components; 32. Connecting components;

311. Converting shaft; 312. Adjusting crossbar;

321, connecting horizontal plate; 322, connecting horizontal bar; 323, first connecting vertical bar; 324, second connecting vertical bar; 325, third connecting vertical bar; 326, fourth connecting vertical bar.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in FIG. 1 to FIG. 6 , the present invention provides a dual-purpose power transformer, including a casing 1, and a transformer mechanism 2 for realizing the functions of a conventional transformer and a differential transformer is arranged in the casing 1, and a transformer mechanism 2 for changing The connection method of the components in the transformer mechanism 2 enables the transformer mechanism 2 to realize the function conversion mechanism 3 of the conventional transformer function and the differential transformer function respectively, so that the power transformer has both the functions of the ordinary transformer and the function of the differential transformer. Dual-purpose capability.

The transformer mechanism 2 includes a first frame body 201 and a second frame body 202 arranged in the casing 1 . The first frame body 201 is provided with a first iron core 203 , and the second frame body 202 is provided with a second iron core 204 , the first iron core 203 is wound with a primary coil 205, the second iron core 204 is wound with a first secondary coil 206 and a second secondary coil 207, the first frame body 201 and the second frame body 202 have the same structure The first frame body 201 and the first frame body 201 are symmetrically arranged in the casing 1, the frame openings of the first frame body 201 and the second frame body 202 are opposite to each other, and both ends of the primary coil 205 are respectively provided with The first fixed end 210 and the second fixed end 211 are provided with a first terminal 212 and a second terminal 213 on the inner wall of the first frame body 201. They are connected by a conductive rod 214 , the second fixed end 211 and the second terminal 213 are in corresponding positions and are connected by a conductive rod 214 .

Both ends of the first secondary coil 206 are respectively provided with a third fixed end 215 and a fourth fixed end 216, and the inner wall of the second frame body 202 is provided with a third terminal 217 and a fourth terminal 218. The third fixed end 215 and the third terminal 217 correspond in position and are connected by a conductive rod 214, the fourth fixed end 216 and the fourth terminal 218 correspond in position; both ends of the second secondary coil 207 are respectively provided with fifth fixed ends 219 and the sixth fixed end 220, the inner wall of the second frame body 202 is provided with a fifth terminal 221 and a sixth terminal 222, the fifth fixed end 219 and the fifth terminal 221 correspond in position and conduct electricity between them. The rods 214 are connected, and the sixth fixed end 220 and the sixth terminal 222 correspond in position.

To realize the function of an ordinary transformer, the first fixed terminal 210 is electrically connected to the first terminal 212 , the second fixed terminal 211 is electrically connected to the second terminal 213 , and the third fixed terminal 215 is electrically connected to the third terminal 217 , the fourth fixed terminal 216 and the fourth terminal 218 are electrically connected, the fifth fixed terminal 219 and the fifth terminal 221 are electrically connected, and the sixth fixed terminal 220 and the sixth terminal 222 are electrically connected; Transformer function, the first fixed terminal 210 is electrically connected to the first terminal 212, the second fixed terminal 211 is electrically connected to the second terminal 213, the third fixed terminal 215 is electrically connected to the third terminal 217, and the fourth fixed terminal 216 and the sixth fixed terminal 220 are electrically connected, and the fifth fixed terminal 219 and the fifth terminal 221 are electrically connected.

It can be seen from this that when changing the function of the power transformer, it is necessary to adjust the connection relationship between the above-mentioned terminals to form different connection networks. In the above two connection methods, the first fixed terminal 210 and the first terminal 212 between the second fixed terminal 211 and the second terminal 213 , between the third fixed terminal 215 and the third terminal 217 , and between the fifth fixed terminal 219 and the fifth terminal 221 , so the connection relationship of the above structure remains unchanged. Therefore, in this embodiment, between the first fixed terminal 210 and the first terminal 212, between the second fixed terminal 211 and the second terminal 213, and between the third fixed terminal 215 and the third terminal 217, and between the sixth fixed terminal 220 and the sixth terminal 222 are all connected through the conductive rod 214, and remain electrically connected. By setting the fixed conductive rod 214, the above-mentioned electrical connection relationship is fixed. When the function of the power transformer is changed, the above-mentioned connection relationship does not change, and there is no need to adjust or reconnect it, thereby simplifying the operation steps and avoiding reconnection. Misconnections that may occur during the connection process.

Meanwhile, in the process of the above-mentioned function transformation, the connection relationship among the fourth fixed terminal 216 , the fourth terminal 218 , the fourth fixed terminal 216 and the sixth fixed terminal 220 needs to be re-matched. In order to make the above-mentioned rematching process fast and stable and avoid misconnection during the reconnection process, a function conversion mechanism 3 is provided in the housing 1, and the function conversion mechanism 3 includes a direction adjustment part 31 and a connection part 32. The connection part 32 It is arranged at the output end of the steering member 31 and rotates around the output end. The steering member 31 includes a conversion shaft 311 fixed on the inner wall of the second frame body 202 through a bearing, and the conversion shaft 311 penetrates the second frame body 202 and the casing 1 . , and extends to the outside of the casing 1, the outside of the casing 1 is provided with a steering crossbar 312, the steering crossbar 312 is connected with the conversion shaft 311, and the connecting member 32 includes a connecting crossboard 321 and a connecting crossbar 322, the connecting crossbar 322 It is arranged on the surface of the connecting horizontal plate 321, the connecting horizontal plate 321 and the connecting horizontal bar 322 are both parallel to the axis of the second iron core 204, and the two ends of the connecting horizontal plate 321 are respectively connected with the first connecting vertical bar 323 and the second connecting vertical bar 323. The rod 324, the two ends of the connecting cross rod 322 are respectively vertically connected with a third connecting vertical rod 325 and a fourth connecting vertical rod 326.

In this embodiment, the conductive rod 214 , the first connecting vertical rod 323 , the second connecting vertical rod 324 , the connecting horizontal rod 322 , the third connecting vertical rod 325 and the fourth connecting vertical rod 326 are all conductive structures. The connecting horizontal plate 321 is an insulating structure.

When the function conversion mechanism 3 is in the initial state, the first connecting vertical rod 323 is located between the fourth fixed end 216 and the fourth terminal 218 , and one end of the first connecting vertical rod 323 is in contact with the fourth fixed end 216 and is electrically connected connection, the other end is in contact with the fourth terminal 218 and is electrically connected, the second connecting vertical rod 324 is located between the sixth fixed end 220 and the sixth terminal 222, and one end of the second connecting vertical rod 324 is connected to the sixth fixed terminal 224. The terminal 220 is in contact and is electrically connected, and the other end is in contact and electrically connected with the sixth terminal 222, so that the transformer mechanism 2 can realize the function of a common power voltage device.

Meanwhile, the third connecting vertical rod 325 is located at the first secondary coil 206 , and there is no contact between the third connecting vertical rod 325 and the third fixed end 215 and between the third connecting vertical rod 325 and the fourth fixed end 216 , the fourth connecting vertical rod 326 is located at the second secondary coil 207 , and there is no contact between the fourth connecting vertical rod 326 and the fifth fixed end 219 and between the fourth connecting vertical rod 326 and the sixth fixed end 220 .

After the conversion shaft 311 rotates by 180 degrees, the function conversion mechanism 3 enters the second state. At this time, the first connecting vertical rod 323 is located at the second secondary coil 207, and the first connecting vertical rod 323 and each terminal are located in the second state. There is no contact between the connecting vertical rod 323 and each fixed end, the second connecting vertical rod 324 is located at the first secondary coil 206, between the second connecting vertical rod 324 and each terminal, and between the second connecting vertical rod 324 and each terminal. There is no contact between the fixed ends.

At the same time, the third connecting vertical rod 325 is located at the second secondary coil 207, and the third connecting vertical rod 325 is in contact with and electrically connected to the sixth fixed end 220, and the fourth connecting vertical rod 326 is located at the first secondary coil 206, And the fourth connection vertical rod 326 is in contact with and electrically connected to the fourth fixed end 216 , so that the first secondary coil 206 and the second secondary coil 207 are connected in reverse series, so that the transformer mechanism 2 can function as a differential voltage transformer.

Further, in order to better realize the function of the differential transformer, a gap is left between the first frame body 201 and the second frame body 202, and the gap is a detection channel 208 for the moving body to be tested to pass through. A through hole 209 corresponding to the detection channel 208 is provided.

In this embodiment, the function conversion mechanism 3 is provided, and the connection between the fourth fixed end 216 , the fourth terminal 218 , the fourth fixed end 216 and the sixth fixed end 220 can be changed by rotating the conversion shaft 311 , so that the first time The primary coil 206 and the second secondary coil 207 are connected in reverse series, so that the transformer mechanism 2 changes from realizing the function of an ordinary voltage transformer to realizing the function of a differential voltage transformer. The above conversion process does not need to reconnect the wires, so it can be completed quickly, while avoiding The misconnection that may occur during the connection process simplifies the operation steps and improves work efficiency.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present application.

Claims (3)

1. A dual-purpose power transformer, characterized by comprising a casing (1), wherein a transformer mechanism (2) for realizing the functions of a conventional transformer and a differential transformer is provided in the casing (1), and a changing the connection mode of the components in the transformer mechanism (2), so that the transformer mechanism (2) can respectively realize the function conversion mechanism (3) of the conventional transformer function and the differential transformer function; The transformer mechanism (2) comprises a first frame body (201) and a second frame body (202) arranged in the casing (1), and a first iron frame body (201) is arranged in the first frame body (201). a core (203), a second iron core (204) is arranged in the second frame body (202), a primary coil (205) is wound around the first iron core (203), and the second iron core (204) wound with a first secondary coil (206) and a second secondary coil (207); The function conversion mechanism (3) comprises a direction adjustment part (31) and a connection part (32), the connection part (32) is arranged on the output end of the direction adjustment part (31) and rotates around the output end, The connecting member (32) is rotated between the first secondary coil (206) and the second secondary coil (207), and is simultaneously connected with the first secondary coil (206) and the second secondary coil (207). When the second secondary coil (207) is electrically connected, the first secondary coil (206) and the second secondary coil (207) are connected in reverse series, so that the transformer mechanism (2) constitutes a differential transformer ; The first frame body (201) and the second frame body (202) have the same structure and are both indented, and the first frame body (201) and the first frame body (201) are symmetrically arranged at the Inside the casing (1), the openings of the first frame body (201) and the second frame body (202) are opposite, and the first frame body (201) and the second frame body (202) ), and the gap is a detection channel (208) for the moving object to be tested to pass through, and a through hole (209) corresponding to the detection channel (208) is provided on the casing (1). ; Both ends of the primary coil (205) are respectively provided with a first fixed end (210) and a second fixed end (211), and a first terminal (212) is provided on the inner wall of the first frame body (201) and the second terminal (213), the first fixed terminal (210) and the first terminal (212) correspond in position and are connected by a conductive rod (214), the second fixed terminal (210) 211) corresponds to the position of the second terminal (213) and the two are connected by a conductive rod (214); Both ends of the first secondary coil (206) are respectively provided with a third fixed end (215) and a fourth fixed end (216), and a third terminal is provided on the inner wall of the second frame body (202) (217) and a fourth terminal (218), the third fixed terminal (215) and the third terminal (217) correspond in position and are connected by a conductive rod (214), the fourth The fixed end (216) corresponds to the position of the fourth terminal (218); Both ends of the second secondary coil (207) are respectively provided with a fifth fixed end (219) and a sixth fixed end (220), and the inner wall of the second frame body (202) is provided with a fifth terminal (221) and a sixth terminal (222), the fifth fixed terminal (219) and the fifth terminal (221) correspond in position and are connected by a conductive rod (214), the sixth The fixed end (220) corresponds to the position of the sixth terminal (222); The direction adjusting component (31) includes a conversion shaft (311) fixed on the inner wall of the second frame body (202) through a bearing, and the conversion shaft (311) penetrates the second frame body (202) and all the other parts. The casing (1) extends to the outside of the casing (1), and a direction adjusting crossbar (312) is provided outside the casing (1), and the direction adjusting crossbar (312) is connected with the conversion The rotating shaft (311) is connected; The connecting member (32) includes a connecting cross plate (321) and a connecting cross bar (322), the connecting cross bar (322) is arranged on the surface of the connecting cross plate (321), and the connecting cross plate (321) ) and the connecting cross bar (322) are both parallel to the axis of the second iron core (204), and the two ends of the connecting cross plate (321) are respectively connected with a first connecting vertical bar (323) and a second connecting bar (323) connecting vertical rods (324), two ends of the connecting horizontal rods (322) are respectively vertically connected with a third connecting vertical rod (325) and a fourth connecting vertical rod (326); The conductive rod (214), the first connecting vertical rod (323), the second connecting vertical rod (324), the connecting horizontal rod (322), the third connecting vertical rod (325) and The fourth connecting vertical rods (326) are all conductive structures, and the converting shafts (311) and the connecting horizontal plates (321) are insulating structures. 2. A dual-purpose power transformer according to claim 1, characterized in that: when the function conversion mechanism (3) is in an initial state, the first connecting vertical rod (323) is located in the fourth Between the fixed end (216) and the fourth terminal (218), and one end of the first connecting vertical rod (323) is in contact with and electrically connected to the fourth fixed end (216), and the other end is connected to the fourth fixed end (216) The fourth terminal (218) contacts and is electrically connected, the second connection vertical rod (324) is located between the sixth fixed terminal (220) and the sixth terminal (222), and the One end of the second connecting vertical rod (324) is in contact with and electrically connected to the sixth fixed end (220), and the other end is in contact with and electrically connected to the sixth terminal (222); At the same time, the third connecting vertical rod (325) is located at the first secondary coil (206), and between the third connecting vertical rod (325) and the third fixed end (215), There is no contact between the third connecting vertical rod (325) and the fourth fixed end (216), the fourth connecting vertical rod (326) is located at the second secondary coil (207), and all the There is no contact between the fourth connecting vertical rod (326) and the fifth fixed end (219), and between the fourth connecting vertical rod (326) and the sixth fixed end (220). 3 . The dual-purpose power transformer according to claim 2 , wherein: after the conversion shaft ( 311 ) is rotated by 180 degrees, the function conversion mechanism ( 3 ) enters a second state, and the The first connecting vertical rod (323) is located at the second secondary coil (207), between the first connecting vertical rod (323) and each terminal, and between the first connecting vertical rod (323) and each fixed end There is no contact between them, the second connecting vertical rod (324) is located at the first secondary coil (206), between the second connecting vertical rod (324) and each terminal, the second connecting vertical rod (324) There is no contact between the connecting vertical rod (324) and each fixed end; The third connecting vertical rod (325) is located at the second secondary coil (207), and the third connecting vertical rod (325) is in contact with the sixth fixed end (220) and is electrically connected, so The fourth connecting vertical rod (326) is located at the first secondary coil (206), and the fourth connecting vertical rod (326) is in contact with and electrically connected to the fourth fixed end (216).

Images