KR101913661B1 - Automatic load transfer switch - Google Patents

Abstract

The present invention relates to an ALTS for selectively opening and closing a supply source of power supplied to a load side between a main power source or a standby power source. The ALTS 10 of the present invention includes an ALTS switching unit 210 and an ALTS driving unit 110. The ALTS driving unit 110 includes an actuator 121 for generating a driving force, And a lever mechanism for selectively opening and closing the main power source side opening and closing part 212 and the spare power source side opening and closing part 213 of the ALTS opening and closing part 210 by changing the linear motion of the transferring rod 122 into rotational motion, (113).

Description

{AUTOMATIC LOAD TRANSFER SWITCH}

The present invention relates to an automatic load transfer switch (ALTS), and more particularly, to an ALTS and a load break switch (LBS) The present invention relates to an ALTS that improves the insulation structure of an opening and closing part of an LBS.

ALTS is generally used for 22.9 kV power distribution or power transmission lines, and is used for power outages of main power sources in countries or public institutions, hospitals, computer centers, industrial production facilities, ports, airports, etc., A spare power source such as an emergency generator is provided separately from the main power source in order to cope with a voltage drop in which the voltage of the main power source falls below the reference voltage so that power is supplied from the main power source to the power source side at normal times, And switches automatically to a standby power supply when a power failure occurs or an ideal voltage drop occurs, thereby supplying power to the receiver from the standby power source.

The ALTS constantly monitors the voltage state of the main power source, and when a low voltage due to a main power interruption or a voltage drop is detected, the main power source is instantly opened and quickly switched to the standby power source to supply power to the customer. On the contrary, If it is restored to its normal state, it is necessary to switch quickly from the standby power source to the main power source again. In other words, if the switching operation is not performed within a very short time, the customer becomes a temporary power failure state and causes great damage.

On the other hand, the LBS is a device that opens and closes the rated current of the power line. In the case of the LBS with the KBS fuse, it is also possible to cut off the short-circuit current. Installation is mandatory for all customers receiving electricity from KEPCO by regulation.

There is a technique disclosed in Japanese Patent Application Laid-Open Publication No. 2000-229902 as a prior art relating to ALTS. Fig. 1 is a view showing the construction of an operating mechanism part of the ALTS disclosed in Patent Document 1, and Fig. 2 is a diagram showing the operation of the opening / closing part.

1 and 2, the configuration and operation of the ALTS in Patent Document 1 will be briefly described.

As shown in FIG. 1, the operating mechanism of the ALTS includes a power driving unit 110, a power switching unit 130, and an opening / closing unit 150. When the main power source is switched to the standby power source, The supporting plate 132 is rotated clockwise by feeding the driving plate 133 of the switching unit 130 to the right and the supporting plate 132 is rotated clockwise, The latches 151 and 152 of the opening and closing part 150 connected to the same axis rotate in the clockwise direction to open the main power supply line and the charging operation of the spare power supply line.

The switching from the standby power source to the main power source is opposite to the above operation.

Patent Document 1: JP-A-2001-0068607

The power drive unit 110 and the power switching unit 130 have a very complicated configuration, and thus the number of components constituting the ALTS is large, which leads to an increase in the production cost.

In addition to ALTS in Patent Document 1, ALTS and LBS are separately provided as separate components in a normal ALTS, and therefore the external form of the ALTS must be increased. Particularly, The area of the installation site becomes large, and so on.

Also, ALTS and LBS in the conventional ALTS as well as the ALTS in the above-mentioned Patent Document 1 introduce an ordinary gas insulation system as an insulation system for arc extinguishing which occurs at the time of insulation and opening / closing of a high-pressure portion, However, this method requires a separate device for monitoring the leakage of the SF6 gas, which also leads to an increase in cost.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problems of the prior art and to simplify the structure of the drive unit for driving the ALTS and to make the insulation part of the ALTS and the LBS into a unified structure, Thereby reducing costs.

According to an aspect of the present invention, there is provided an automatic load switching apparatus comprising: first opening / closing means for switching a power supply source supplied to a load side between a first power source and a second power source; Wherein the first driving means includes a first actuator for generating a driving force, a first transmitting rod for performing a linear movement by a driving force of the first actuator, And a first lever mechanism for converting a linear motion into a rotary motion, wherein the first opening / closing means causes the power source to be supplied to the load side to rotate between the first power source and the second power source Which is selectively opened and closed.

Preferably, the first opening / closing means includes a first power source side opening / closing portion and a second power source side opening / closing portion, wherein the first lever mechanism has one end rotatably connected to the first transmission rod, A first link fixedly coupled to a pivot shaft disposed in a vertical direction with respect to the first transmission rod, a center shaft fixedly coupled to the pivot shaft, wherein one end of the center shaft is connected to the first power source side switching unit, And a second link that couples with the second power source side switching unit.

Preferably, the first power source side switching portion and the second power source side switching portion are housed together in one insulating housing.

Preferably, the apparatus further includes a load switch connected to the output side of the first switching means to open and close the supply of electric power to be supplied to the load side, wherein the load switch is connected between the output side of the first opening / Closing means for opening and closing a power supply path to be supplied, and second driving means for driving the second opening / closing means, wherein the second driving means includes a second actuator for generating a driving force, And a second lever mechanism for converting a linear movement of the second transmission rod into a rotary motion, wherein the second lever mechanism rotates by the rotation of the second lever mechanism, Closes the power supplied to the load side.

Preferably, the second opening / closing means is also integrally housed in the insulating housing together with the first power source side opening / closing portion and the second power source side opening / closing portion.

The automatic load switching switch according to the present invention is characterized in that the actuator for driving the opening and closing part includes an actuator for generating a driving force, a transmission rod for linear motion by the driving force of the actuator, It is possible to switch the supply source of the power supplied to the load side from the first side to the second power source side or from the second power source side to the first power source side by means of the simple structure, The structure of the ALTS is simple, the number of parts can be minimized, the manufacturing cost can be reduced, and there is an advantage such that the failure is less likely to occur as the structure is simplified.

In addition, since the ALTS and LBS are accommodated in the same case and the ALTS opening / closing part and the LBS opening / closing part are housed in one insulating housing, the structure of the ALTS is simple and the number of parts constituting the ALTS can be minimized. The manufacturing cost can be reduced, and there is also an advantage that the failure is comparatively less in accordance with the simplification of the structure.

Brief Description of Drawings Fig. 1 is a schematic view of an operating mechanism of an ALTS of the prior art,
2 is a schematic view of an opening and closing part of an ALTS of the prior art,
3 is a diagram showing a schematic structure of an ALTS 10 of a preferred embodiment of the present invention,
4 is an exploded perspective view of a main part of the ALTS 10 of the preferred embodiment of the present invention,
5 is a perspective view showing details of the lever mechanism 113 of the ALTS driver 110,
6A and 6B are diagrams showing an operation state of the ALTS, in which FIG. 6A shows a state where the main power source side and the load side are opened, the spare power source side and the load side are closed, FIG. 6B shows a state where the spare power source side and the load side are opened, Side and the load side are respectively closed,
Fig. 7 is a diagram showing the operation state of the LBS. Fig. 7 (a) shows a state in which the power supply side and the load side are closed, and Fig. 7 (b) shows a state in which the power supply side and the load side are opened.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

First, in the present embodiment, an auxiliary power source (hereinafter referred to as a "main power source") supplied from a power company to a customer as a first power source (hereinafter referred to as a "main power source"), Quot; power supply ") is used as an example.

FIG. 3 is a diagram showing a schematic structure of an ALTS 10 of a preferred embodiment of the present invention, and FIG. 4 is an exploded perspective view of a main part of an ALTS 10 of a preferred embodiment of the present invention. 3 and 4, the ALTS 10 includes a driving unit 100, an opening / closing unit 200, an input / output cable 300, and the like, .

In FIG. 3, for convenience of explanation, the case 400 is shown with its top and side covers separated, and in FIG. 3 and in each of the drawings attached hereto, And other various components and mounting means for mounting these components are omitted unless necessary.

The driving unit 100 generates a driving force for operating the opening and closing unit 200 and includes an ALTS driving unit 110 for driving the ALTS and an LBS driving unit 120 for driving the LBS.

The opening / closing part 200 opens and closes the line by operating the driving force of the driving part 100, and an ALTS opening / closing part 210 for switching the supply source of the electric power supplied to the load side by the driving force of the ALTS driving part 110 to the main power source or the standby power source side And an LBS switching unit 220 which is driven by the driving force of the LBS driving unit 120 to open and close a no-load current or a load current between the power source side and the load side.

The input / output cable 300 includes an input cable 310 for drawing power supplied from the main power source and the standby power source to the ALTS switching unit 210 and an output cable 320 for pulling the output of the LBS switching unit 220 to the load side And the input / output cable 300 is formed of a bus bar, an insulating cable, or the like, if necessary. The input / output cable is not directly related to the gist of the present invention, and it can be suitably configured according to necessity for a general technician, and a detailed description thereof will be omitted.

Next, the specific configuration and operation of each unit will be described in detail with reference to Figs. 4 to 7. Fig.

FIG. 4 is an exploded perspective view of a main portion of the ALTS 10 according to a preferred embodiment of the present invention, and FIG. 5 is a perspective view showing details of the lever mechanism 113 of the ALTS driver 110. FIG. 6A and 6B are diagrams showing an operation state of the ALTS, in which FIG. 6A shows a state where the main power source side and the load side are opened, the spare power source side and the load side are closed, FIG. 6B shows a state where the spare power source side and the load side are opened, Side and the load side are closed, respectively. Fig. 7 is a diagram showing the operation state of the LBS. Fig. 7 (a) shows a state in which the power source side and the load side are closed, and Fig. 7 (b) shows a state in which the power source side and the load side are opened. 3, 4, and 5 show all the R, S, and T phases of the ALTS 10, but in FIGS. 6 and 7, only one of the R, S, and T phases of the ALTS 10 However, the three-phase structure is all the same.

4, the ALTS driving unit 110 includes an actuator 111 for generating a driving force, a transmission rod 112 for transmitting a driving force generated by the actuator 111 to the ALTS switching unit 210 in a linear motion, And a lever mechanism 113 for selectively turning ON / OFF the ALTS opening / closing unit 210 by changing linear motion of the transferring rod 112 into rotational motion.

The actuator 111 includes a main power supply side coil 1111 and a spare power supply side coil 1112 and a plunger 1113. The main power supply side coil 1111 and the auxiliary power supply side coil 1112 The main power supply side coil 1111 or the spare power supply side coil 1112 is selectively excited or de-energized under the control of the control unit so that the main power supply side coil 1111, And the plunger 1113 linearly moves toward the side coils 1112 (see Figs. 6 (a) and 6 (b)).

The plunger 1113 of the actuator 111 may include a permanent magnet if necessary.

The actuator 111 is not a gist of the present invention and has a known structure. For example, the structure and operation of the actuator 111 are disclosed in Japanese Patent Application Laid-Open No. 1999-47296. do.

One end of the transmission rod 112 is connected to one end of the plunger 1113 of the actuator 111 and the other end of the transmission rod 112 is linked to one end of the lever mechanism 113 to be interlocked with the other end of the plunger 1113, To the lever mechanism (113).

The lever mechanism 113 converts the linear motion of the transfer rod 112 into a rotational motion to drive the ALTS opening / closing unit 210.

5, the lever mechanism 113 includes a first link 1132 that is rotatably coupled at one end to the other end of the transfer rod 112, and the other end is fixedly coupled to the pivot shaft 1131, The first link 1132 and the second link 1132. The first link 1132 and the second link 1132 are spaced apart from each other by a predetermined distance from the first link 1132. The center portion is fixedly coupled to the pivot shaft 1131 and has a first shaft hole 1136 and a second shaft hole 1137, (1133). The interval between the plurality of second links 1133 corresponds to the distance between the center axes of the movable electrodes of the main power source side switching unit 212 and the spare power source side switching unit 213 of the ALTS switching unit 210. In the present embodiment, the number of the second links 1133 is three, and the number of the second links 1133 corresponds to the number of the ALTS 10.

The pivot shaft 1131 is a rod-like shaft, and both ends of the pivot shaft 1131 are rotatably supported by the bracket 1135 via a bearing 1134. [ As shown in FIG. 5, the arrangement direction of the transfer rod 112 and the arrangement direction of the pivot shaft 1131 of the lever mechanism 113 are substantially perpendicular.

Each of the plurality of second links 1133 is connected to one end of the movable electrode of the main power source side switching unit 212 of the ALTS switching unit 210 and the second shaft hole 1137 is connected to the ALTS switching unit 210, Is connected to one end of the movable electrode of the spare power source side switching unit (213). The linear movement of the transmission rod 112 is converted into rotational motion in the lever mechanism 113 and the rotation of the second link 1133 of the lever mechanism 113 causes both ends of the second link 1133 The movable electrode of the main power supply side switching portion 212 and the spare power supply side switching portion 213 coupled to the first shaft hole 1136 and the second shaft hole 1137 of the first power supply side switching portion 213 linearly moves in the Y- Similarly, the main power source side switching unit 212 and the auxiliary power source side switching unit 213 of the ALTS switching unit 210 selectively perform opening and closing operations.

The ALTS switching unit 210 includes a main power source side switching unit 212 and a spare power source side switching unit 213. As schematically shown in FIGS. 4 and 6, the main power source side switching unit 212, (213) each have a fixed electrode and a movable electrode inside.

The fixed electrode 2121 on the main power source side is electrically connected to the main power source side distribution line of the power company via the main power source side input cable and the spare power source side fixed electrode 2131 is connected to the emergency generator It is electrically connected to the redundant power supply side.

As described above, among the movable electrodes, the main power source side movable electrode 2122 is connected to the first shaft hole 1136 of the second link 1133 in an insulated state, and the spare power side movable electrode 2132 is connected to the lever mechanism Is connected in an insulated state to the second shaft hole (1137) of the shaft (113).

The main power source side movable electrode 2122 and the spare power source side movable electrode 2132 are electrically connected to the movable electrode 2202 of the LBS opening / closing unit 220, which will be described later, . That is, the main power source side and spare power source side movable electrodes 2122 and 2132 of the ALTS opening / closing unit 210 are electrically connected to each other and also electrically connected to the movable electrode 2202 side of the LBS opening / closing unit 220, And the output of the ALTS switching unit 210 serves as an input to the LBS switching unit 220. However, since the ALTS of the present invention has such a structure, the ALTS and the LBS can be integrated into a single structure with a simple structure.

The structure of the ALTS switching unit 210 has been briefly described. However, since the internal structure of the ALTS switching unit 210 including the movable electrodes and the fixed electrodes and the shape of the contacts are not the subject of the present invention, A detailed description thereof will be omitted. For example, the structure disclosed in the patent application No. 10-1051230 of the applicant of the present application.

The insulating housing 211 is made of an insulating material such as epoxy and is sealed and sealed together with the main power source side opening and closing part 212 of the ALTS opening and closing part 210, the spare power source side opening and closing part 213 and the LBS opening and closing part 220 And the inside is made of a vacuum.

Next, the configuration of the LBS driver 120 will be described.

4 and 7, the LBS driving unit 120 includes an actuator 121, a transfer rod 122 that performs a linear motion in conjunction with the actuator 121, And a lever mechanism 123 which is driven to open and close the LBS opening /

The structure and function of each part of the LBS driving unit 120 are basically the same as those of the ALTS driving unit 110. However, in the ALTS driving unit 110, the second link 1133 of the lever mechanism 113 is connected to both ends The second link 1233 of the LBS driving unit 120 has a shaft hole formed only at one end thereof. However, the second link 1233 of the LBS driving unit 120 is different from the first shaft hole 1136 of FIG. Reference numeral 1211 denotes a first coil, 1212 denotes a second coil, and 1213 denotes a plunger.

The LBS switching unit 220 has a fixed electrode 2201 and a movable electrode 2202 inside as schematically shown in Figs. 4 and 7.

The fixed electrode 2201 is electrically connected to the load side via the output cable and the movable electrode 2202 is mechanically connected to the shaft hole of the second link 1233 of the lever mechanism 123 .

As described above, the movable electrode 2202 of the LBS switching unit 220 is electrically connected to the main power source side movable electrode of the ALTS switching unit 210 and the auxiliary power source side movable electrode 2202 of the ALTS switching unit 210, (Not shown). That is, the main power source side and the spare power source side movable electrodes 2122 and 2132 of the ALTS opening / closing unit 210 and the movable electrodes 2202 of the LBS opening / closing unit 220 are electrically connected to each other so that the output of the ALTS opening / closing unit 210 And is an input to the LBS switching unit 220.

Next, the operation of the ALTS 10 of the preferred embodiment of the present invention will be described with reference to Figs. 4, 5, 6 and 7. Fig.

First, the switching operation of the ALTS switching unit 210 to the main power source or the standby power source side will be described with reference to Figs. 4, 5 and 6. Fig.

6 (a), when the voltage on the main power source side becomes equal to or lower than a predetermined voltage, the power source side coil of the actuator 121 1112 are excited and the main power source side coil 1111 is excited and the plunger 1213 is excited by the magnetic field generated by the spare power source side coil 1112 in the direction of the spare power source side coil 1112 Whereby the transfer rod 122 whose one end is connected to the plunger 1213 moves in the same direction as the plunger 1213 (X-axis direction in FIG. 4).

The linear motion of the transfer rod 122 is converted into rotational motion by the pivot shaft 1131 via the first link 1132 of the lever mechanism 113 to which the other end of the transfer rod 122 is connected, 6 (a)) about the pivot shaft 1131 and the first pivot hole 1136 of the second link 1133 rotates in the clockwise direction The second shaft hole 1137 rotates in the Y-axis direction of FIG. 4, and the second shaft hole 1137 rotates in the -Y-axis direction of FIG.

By the operation of the lever mechanism 113 as described above, the main power source side opening and closing part 212 of the ALTS opening and closing part 210 moves the movable electrode 2122 in the Y axis direction of FIG. 4 and moves the movable electrode 2122 And the contact of the fixed electrode 2121 is opened and the spare power source side switching unit 213 is opened by the movable electrode 2132 in the -Y axis direction and is connected to the movable electrode 2121 in the spare power source side switching unit 213 The contact of the fixed electrode 2121 and the contact of the fixed electrode 2121 are closed. Therefore, the power supplied to the load side (to be exact, the input side of the LBS) is switched from the main power supply side to the standby power supply side.

Next, an operation in which the power supply is switched from the standby power source side to the main power source side in the case where the power failure is restored and the power supply by the main power source becomes possible, will be described.

6 (a)) in which electric power is supplied from the spare power source to the load side (FIG. 6 (a)), or when the voltage drop problem is solved and power supply is normally performed, The main power source side coil 1111 is excited and the spare power source side coil 1112 is excited and the plunger 1113 is driven from the side of the spare power source side coil 1112 in the direction of the main power source side coil 1111 Whereby the transfer rod 112 whose one end is connected to the plunger 1113 also moves in the same direction as the plunger 1113 (the -X-axis direction in FIG. 4).

Thus, the lever mechanism 113 rotates in the counterclockwise direction (the direction of arrow B in FIG. 6B) about the pivot shaft 1131, and by the rotation of the second link 1133 of the lever mechanism 113 The main power source side opening and closing part 212 of the ALTS opening and closing part 210 moves the movable electrode 2122 in the -Y axis direction of FIG. 4 to move the contact of the fixed electrode 2121 in the main power source side opening and closing part 212 and the contact of the movable electrode 2122 The movable contact 2131 and the movable contacts 2131 and 2132 are opened in the spare power source side switching unit 213 by moving the movable electrode 2132 in the Y axis direction of Figure 4 while the contact is closed . In other words, supply of power supplied to the load side (to be exact, the input side of the LBS) is switched from the standby power source side to the main power source side.

Next, the operation of the LBS switching unit 220 will be described with reference to Figs. 4 and 7. Fig.

First, the operation of switching the LBS from the open state to the closed state will be described with reference to Fig. 7 (a).

When the first coil 1211 of the actuator 121 is excited and the second coil 1212 is excited by a command from a control unit (not shown), the plunger 1213 is rotated by the magnetic field generated by the first coil 1211 And the transfer rod 122 connected to one end of the plunger 1213 moves in the same direction as the plunger 1213 (the -X axis direction in FIG. 4).

The linear movement of the transfer rod 122 is converted into rotational motion by the lever mechanism 123 and the second link 1233 is rotated counterclockwise about the pivot shaft 1231 C direction).

The movable electrode 2202 of the LBS opening and closing part 220 is moved in the -Y axis direction of FIG. 4 by the rotation of the second link 1233 so that the contact of the movable electrode 2202 in the LBS opening and closing part 220 and the contact of the fixed electrode 2201 Is closed, so that power is supplied to the load side. In other words, the LBS is closed.

Next, an operation of switching the LBS from the closed state to the open state will be described with reference to Fig. 7 (b).

The second coil 1212 of the actuator 121 is excited by the LBS open command from the control unit not shown and the first coil 1211 is excited so that the plunger 1213 is generated in the second coil 1212 And the transfer rod 122 having one end connected to the plunger 1213 performs linear motion in the same direction as the plunger 1213 (X-axis direction in Fig. 4).

The linear motion of the transfer rod 122 is converted into rotational motion by the lever mechanism 123 and the second link 1233 is rotated in the clockwise direction about the pivot shaft 1231 Direction).

The movable electrode 2202 of the LBS opening and closing part 220 moves in the Y-axis direction of FIG. 4 by the rotation of the second link 1233 so that the contact of the movable electrode 2202 and the fixed electrode 2201 in the LBS opening / The supply of electric power to the load side is cut off. That is, the LBS is in an open state.

As described above, the ALTS 10 of the present invention includes the actuator 121 for generating the driving force by the ALTS driving unit 110 for driving the ALTS opening / closing unit 210, A lever mechanism 113 for selectively opening and closing the main power source side opening and closing part 212 and the spare power source side opening and closing part 213 of the ALTS opening and closing part 210 by changing the linear motion of the transfer rod 122 into rotational motion, The supply source of electric power supplied to the load side can be switched from the main power source side to the standby power source side or from the standby power source side to the main power source side by a simple configuration. With this configuration, the structure of the ALTS is simple, The number of parts can be minimized, so that the manufacturing cost can be reduced. Moreover, there is an advantage such that occurrence of failure is less in accordance with simplification of the structure.

In addition, while the ALTS and LBS are housed in the same case, the ALTS opening / closing unit 210 and the LBS opening / closing unit 220 are integrated and integrated in one insulating housing 211, so that the structure of the ALTS is simple, It is possible to reduce the size of the ALTS, to reduce the manufacturing cost, and to provide a merit of relatively less trouble as the structure is simplified.

Although the preferred embodiments of the present invention have been described, the present invention is not limited to the above embodiments. For example, the following changes or modifications are possible.

In the above embodiment, the main power source is a main power source supplied from an electric power company and the standby power source is an emergency generator. However, for example, both main power and spare power are supplied from the electric power company to the customer, May be a separate power source from the main power source.

In the above embodiment, the actuators 111 and 121, which are driving force generating means of the ALTS driving unit 110 and the LBS driving unit 120, are so-called magnetic force systems in which the plunger is driven in a linear direction by a magnetic field generated in the coils However, the present invention is not limited to this method. For example, a mechanical actuator using a compressive force or a tensile force of a spring may be used. Any known method may be used as long as it is a means for generating a driving force so that the transfer rod 112 or the transfer rod 122 performs linear motion.

Although the primary power source side opening and closing part 212 of the ALTS opening and closing part 210 and the spare power source side opening and closing part 213 and the LBS opening and closing part 220 are housed together in one insulating housing 211 in the above embodiment, The housing for accommodating the ALTS opening and closing part 210 and the housing for housing the LBS opening and closing part 220 may be separately provided. Alternatively, the insulating housing for accommodating the main power source side opening / closing part 212 of the ALTS opening / closing part 210 and the insulating housing for accommodating the spare power source side opening / closing part 213 may be separate housings.

Also in this case, the main power source side switching unit 212, the spare power source side switching unit 213, and the movable electrodes of the LBS switching unit 220 must be electrically connected to each other.

10 ALTS
100 driver
200 opening / closing part
300 input cable
110 ALTS driver
120 LBS driving unit
111, 121 Actuator
112, 122,
113, 123 Lever mechanism
211 Isolated housing
212 Main power switch
212 Reserve power side switching unit

Claims (6)

First switching means for switching a power supply source supplied to the load side between the first power source and the second power source, and first driving means for driving the first switching means,
Wherein the first opening / closing means includes a first power source side switching unit and a second power source side switching unit,
Wherein the first driving means comprises:
A first actuator for generating a driving force,
A first transmission rod that linearly moves by the driving force of the first actuator,
And a first lever mechanism for converting the linear motion of the first transfer rod into a rotational motion,
The first lever mechanism includes:
One end of which is pivotally connected to the first transmission rod and the other end is fixedly coupled to a pivot shaft disposed in a direction perpendicular to the first transmission rod to convert the linear movement of the first transmission rod into a rotary motion, Link,
And the other end of the center portion is coupled to the first power source side switching portion and the other end is coupled to the second power source side switching portion so as to rotate in the direction of interlocking with the first link, And a plurality of second links for moving,
The first opening and closing means selectively opens and closes a power supply source that supplies the load side in accordance with the rotational direction of the second link, between the first power supply and the second power supply,
Further comprising a load switch electrically connected to the output side of the first opening and closing means to open and close the supply of electric power supplied to the load side,
The load switch comprises:
Second opening and closing means for opening and closing a power supply path supplied to the load side from the output side of the first opening and closing means and second driving means for driving the second opening and closing means,
Wherein the second driving means comprises:
A second actuator for generating a driving force,
A second transmission rod that linearly moves by the driving force of the second actuator,
And a second lever mechanism for converting the linear motion of the second transmission rod into a rotary motion,
And the second opening / closing means opens / closes the electric power supplied to the load side by the rotational movement of the second lever mechanism. delete The method according to claim 1,
Wherein the first power source side switching portion and the second power source side switching portion are housed together in an insulating housing integrally molded or housed separately in a separately molded housing. delete The method according to claim 1,
Wherein the first power source side switching portion, the second power source side switching portion, and the second switching means are housed together in one insulating housing integrally molded. The method according to claim 1,
Wherein the first power source side switching portion, the second power source side switching portion, and the second switching means are housed separately in a separately molded insulating housing.

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