Electrically operated switch for a switch

Abstract

To provide an electrically-driven handling device of a switch, capable of reducing a maintenance work while achieving miniaturization.SOLUTION: An electrically-driven handling device of a switch, comprises: a motor 16; a motor gear 17; an output gear 20 fixed to an operation force transmission shaft 19; an operation force transmission lever 21 that transmits rotation to be transmitted to the operation force transmission shaft as an operation force for operating it against an operation handle in an injection direction; a master-slave gear 18 formed by integrating a master gear 18a with a large diameter and a slave gear 18b with a small diameter; a gear carrier 22 that engages the master gear to the motor gear to support the master-slave gear; a carrier holder 23 that swingably supports the gear carrier; and an electric actuator 24 that swings the carrier holder so that the slave gear is engaged to the output gear in the case where a voltage is applied, and swings the carrier holder so as to cancel an engagement of the slave gear to the output gear in the case where the voltage is not applied.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an electric operating device for automatically closing a switch that opens and closes a circuit of high-voltage power receiving and distribution equipment.

Background Art

[0002] In high-voltage power receiving and distribution equipment such as factories and commercial facilities, switches are installed to open and close load currents and interrupt short-circuit currents.

[0003] For example, Patent Document 1 describes a switch including a fixed electrode, a movable electrode that contacts and separates from the fixed electrode, and an electric operating device that rotates the movable electrode with respect to the fixed electrode. The electric operating device of this switch includes an operating handle, an operating shaft to which the operating handle is attached and rotates integrally with the operating handle, and a link mechanism that rotates by the rotation of the operating shaft to rotate the movable electrode.

[0004] The electric operating device of Patent Document 1 is provided with an input mechanism having a drive member attached to the operating shaft and rotating integrally, a plunger that contacts the drive member and moves in a direction perpendicular to the extending direction of the operating shaft, and a solenoid that attracts the plunger when the circuit is input. When the plunger is attracted by the solenoid, the plunger rotates the drive member, so that the operating shaft rotates in the input direction. And since this electric operating device uses a solenoid to rotate the operating shaft as an automatic input mechanism, even if an instantaneous voltage drop or power outage occurs during the input operation, the plunger does not stop during the input operation, and the fixed electrode and the movable electrode do not stop in a separated state during the input operation, and it is possible to prevent the occurrence of ground fault accidents due to arc discharge.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

[0006] However, the electric operating device for the switch described in Patent Document 1 uses a solenoid drive system equipped with a large solenoid, which presents problems in terms of miniaturization. While an electric operating device using a motor drive system with a capacitor is also conceivable, it would require periodic replacement of the capacitor, posing problems in terms of maintenance.

[0007] Therefore, the present invention aims to provide an electric operating device for a switch that can be miniaturized and reduces maintenance work. [Means for solving the problem]

[0008] To achieve the above objective, an electric operating device for a switch according to one aspect of the present invention comprises a fixed electrode, a movable electrode that can move toward and away from the fixed electrode, an operating shaft to which an operating handle is fixed, and a link mechanism that transmits the rotation of the operating shaft in the closing direction to the movable electrode in a direction that connects it to the fixed electrode, and transmits the rotation of the operating shaft in the closing direction to the movable electrode in a direction that moves it away from the fixed electrode, wherein the electric operating device for a switch comprises a motor, a motor gear fixed to the output shaft of the motor, an output gear fixed to the operating force transmission shaft, and a base end fixed to the operating force transmission shaft and engaged with the operating handle. The system includes an operating force transmission lever that transmits rotation transmitted to the operating force transmission shaft as an operating force that rotates the operating handle in the input direction; a parent-child gear system in which a large-diameter parent gear and a small-diameter child gear are integrated; a gear carrier that supports the parent-child gear system by meshing the parent gear with the motor gear; a carrier holder that swingably supports the gear carrier; and an electric actuator that, when voltage is applied, swings the carrier holder so that the child gear meshes with the output gear, and when no voltage is applied, swings the carrier holder so that the child gear disengages from the output gear.

[0009] Furthermore, an electric operating device for a switch according to one aspect of the present invention comprises a fixed electrode, a movable electrode that can move toward and away from the fixed electrode, an operating shaft to which an operating handle is fixed, and a link mechanism that transmits the rotation of the operating shaft in the closing direction to the movable electrode in a direction that connects it to the fixed electrode, and transmits the rotation of the operating shaft in the closing direction to the movable electrode in a direction that moves it away from the fixed electrode, and further comprises a motor, a motor gear fixed to the output shaft of the motor, an output gear fixed to the operating shaft, a parent-child gear in which a large-diameter parent gear and a small-diameter child gear are integrated, a gear carrier that supports the parent-child gear by meshing the parent gear with the motor gear, a carrier holder that swingably supports the gear carrier, and an electric actuator that, when a voltage is applied, swings the carrier holder in a direction that meshes the child gear with the output gear, and when no voltage is applied, swings the carrier holder in a direction that disengages the meshing of the child gear and the output gear. [Effects of the Invention]

[0010] The electric operating device for the switch of the present invention can be miniaturized and maintenance work can be reduced. [Brief explanation of the drawing]

[0011] [Figure 1] This is a front view showing a switch equipped with an electric operating device according to the first embodiment of the present invention. [Figure 2] This is a perspective view showing the electric operating device of the switch of the first embodiment from an oblique angle above. [Figure 3] This is a side view showing the configuration of the gear carrier that constitutes the electric operating device of the switch in the first embodiment. [Figure 4] This is a side view showing the gear carrier of the electric operating device of the switch in the first embodiment swinging upward. [Figure 5] This is a side view showing the gear carrier of the electric operating device of the switch in the first embodiment swinging downward. [Figure 6]This diagram shows the state in which the output gear constituting the electric operating device of the switch in the first embodiment is meshed with the child gear of the parent gear. [Figure 7] This figure shows the state in which the child gear of the parent-child gear that constitutes the electric operating device of the switch in the first embodiment is disengaged from the output gear. [Figure 8] This is a front view showing an electrically operated device for a switch according to a second embodiment of the present invention. [Modes for carrying out the invention]

[0012] Next, embodiments of the present invention will be described with reference to the drawings. In the following drawings, identical or similar parts are denoted by the same or similar reference numerals. However, it should be noted that the drawings are schematic, and the relationship between thickness and planar dimensions, the ratio of the thickness of each layer, etc., may differ from reality. Therefore, specific thicknesses and dimensions should be determined by referring to the following explanation. Furthermore, it should be noted that there are parts where the relationships and ratios of dimensions differ between drawings.

[0013] Furthermore, the embodiments described below illustrate devices and methods for realizing the technical concept of the present invention, and the technical concept of the present invention does not limit the materials, shapes, structures, arrangements, etc. of the components to those described below. The technical concept of the present invention can be modified in various ways within the technical scope defined by the claims described in the patent claims.

[0014] In the following explanation, the terms "left," "right," "front," "rear," "up," and "down" refer to the directions shown in the attached diagram. [Switch of the first embodiment]

[0015] As shown in Figures 1 and 2, the switch 1 of the first embodiment of the present invention comprises a switch body 2 and an electric operating device 3.

[0016] The switch body 2 has a fixed electrode 5 and a movable electrode 6 that can be separated from and connected to the fixed electrode 5 supported on a support plate 4. An operating shaft 7 extending in the left - right direction is rotatably arranged on the support plate 4, and an operating handle 8 is fixed to the right end of the operating shaft. When the operating handle 8 is rotated from the front position to the upper position, the operating shaft 7 rotates in the positive direction, and the rotation of the operating shaft 7 is transmitted to the movable electrode 6 via an operating rod 9, causing the movable electrode 6 to rotate to a position where it connects to the fixed electrode 5. Then, the operating handle 8 rotated to the upper position engages with a latch mechanism 10, maintaining the switched - on state where the fixed electrode 5 and the movable electrode 6 are connected.

[0017] Reference numeral 11 is a cutoff spring in which spring force is stored when the operating shaft 7 rotates from the cutoff state (where the movable electrode 6 is separated from the fixed electrode 5) to the switched - on state. When the latch mechanism 10 is disengaged from the operating handle 8 in the upper position, the operating handle 8 rotates to the front position, and the spring force of the cutoff spring 11 causes the operating shaft 7 to rotate in the reverse direction. The rotation of the operating shaft 7 is transmitted to the movable electrode 6 via the operating rod 9, and the movable electrode 6 separates from the fixed electrode 5 to enter the cutoff state.

[0018] As shown in FIG. 1, the electric operating device 3 is arranged between a pair of operation support plates 15a and 15b that are fixed to the support plate 4 at intervals in the left - right direction, and includes a motor 16, a motor gear 17, a parent - child gear 18 in which a large - diameter parent gear 18a and a small - diameter child gear 18b are integrated, an operating force transmission shaft 19, an output gear 20, an operating force transmission lever 21, a gear carrier 22, a carrier holder 23, and an electromagnetic solenoid 24.

[0019] The motor 16 is fixed to one operation support plate 15a from the outside, and the motor gear 17 is fixed to a motor output shaft that penetrates one operation support plate 15a and extends toward the other operation support plate 15b.

[0020] As shown in Figure 1, the gear carrier 22 is a U-shaped member having a pair of carrier side plates 22a and 22b spaced apart to the left and right, and a carrier bottom plate 22c connecting the pair of carrier side plates 22a and 22b. The motor gear 17 is positioned passing through one of the carrier side plates 22a.

[0021] Then, as shown in Figure 3, the gear shaft 18c of the parent-child gear 18 is fitted into the first carrier shaft hole 22d formed on the rear side of the pair of carrier side plates 22a and 22b, thereby rotatably supporting the parent-child gear 18 on the gear carrier 22, and the parent gear 18a of the parent-child gear 18 meshes with the motor gear 17. Here, a second carrier shaft hole 22e is formed on the front side of the other carrier side plate 22b.

[0022] As shown in Figure 1, the carrier holder 23 is fixed to the inside of one of the operating support plates 15a. The holder side plate 23a of this carrier holder 23 is positioned to cover the other carrier side plate 22b of the gear carrier 22. As shown in Figure 4, a holder shaft hole 23b is formed on the front side of the holder side plate 23a, and an elongated hole 23c extending vertically is formed on the rear side. Here, the holder shaft hole 23b is formed so that its axis aligns with that of the motor gear 17 mentioned above. The connecting shaft 30 is fitted into the holder shaft hole 23b of the holder side plate 23a and the second carrier shaft hole 22e formed in the other carrier side plate 22b of the gear carrier 22 (see Figure 1). At this time, the axes of the connecting shaft 30 and the motor gear 17 are aligned. The gear shaft 18c of the parent-child gear 18 is fitted into the elongated hole 23c of the holder side plate 23a.

[0023] As a result, the gear carrier 22 is supported by the carrier holder 23, as the gear shaft 18c moves in the longitudinal direction (up and down direction) of the elongated hole 23c, allowing it to swing freely in the vertical direction around the connecting shaft 30 as the pivot point.

[0024] As shown in Figure 1, an operating force transmission shaft 19 is rotatably positioned above the gear carrier 22, passing through a pair of operating support plates 15a and 15b. An output gear 20 is fixed to the longitudinal center of the operating force transmission shaft 19, and an operating force transmission lever 21 is fixed to its left end. The output gear 20 engages with the child gear 18b of the parent-child gear 18 when the gear carrier 22 swings upward. The operating force transmission lever 21 is positioned adjacent to the operating handle 8, and as shown in Figure 2, an L-shaped handle engagement portion 21a is formed at its tip, extending to the movement path of the operating handle 8.

[0025] As shown in Figure 1, an electromagnetic solenoid 24 is fixed to one of the operating support plates 15a below the gear carrier 22. The electromagnetic solenoid 24 comprises a solenoid body 25 and a plunger 26 that extends vertically from inside the solenoid body 25 and protrudes from both above and below. A return spring 27 is engaged with the lower part of the plunger 26. The upper end of the plunger 26 of the electromagnetic solenoid 24 is connected to the carrier bottom plate 22c of the gear carrier 22. When a voltage is applied to the electromagnetic solenoid 24, the plunger 26 moves upward due to the excitation of a coil located inside the solenoid body 25, and the return spring 27 engaged with the lower part of the plunger 26 is compressed, accumulating spring force. When no voltage is applied to the electromagnetic solenoid 24, the excitation of the coil on the plunger 26 is stopped, and the plunger 26 moves downward due to the spring force of the accumulated return spring 27. In this invention, the upward movement of the plunger 26 when a voltage is applied to the electromagnetic solenoid 24 is referred to as the first direction. Furthermore, the downward movement of the plunger 26 due to the spring force of the return spring 27 when no voltage is applied to the electromagnetic solenoid 24 is referred to as the second direction.

[0026] Figure 4 shows the electric operating device 3 when voltage is applied to the electromagnetic solenoid 24. As the plunger 26 moves upward, the gear carrier 22 rotates upward around the connecting shaft 30 as its pivot point. When the gear carrier 22 rotates upward, as shown in Figure 6, the child gear 18b of the parent-child gear 18 supported by the gear carrier 22 meshes with the output gear 20. On the other hand, Figure 5 shows the electric operating device 3 when no voltage is applied to the electromagnetic solenoid 24. As the plunger 26 moves downward due to the spring force of the return spring 27, the gear carrier 22 rotates downward around the connecting shaft 30 as its pivot point. When the gear carrier 22 rotates downward, as shown in Figure 7, the meshing between the child gear 18b of the parent-child gear 18 and the output gear 20 is resolved.

[0027] In the first embodiment, the switch 1 is manually closed by manually operating the operating handle 8 from the forward position to the upward position. The rotation of the operating handle 8 causes the operating shaft 7 to rotate in the forward direction, and the rotation of the operating shaft 7 is transmitted to the movable electrode 6 via the operating rod 9, causing the movable electrode 6 to rotate to a position where it connects to the fixed electrode 5. Then, by engaging the latch mechanism 10 with the operating handle 8 which has been rotated to the upward position, the closed state in which the fixed electrode 5 and the movable electrode 6 are connected is maintained.

[0028] Furthermore, in the first embodiment, since spring force is stored in the shut-off spring 11 during the closing operation described above, when the latch mechanism 10 is released from the upper operating handle 8, the spring force of the shut-off spring 11 causes the operating shaft 7 to rotate in the opposite direction. The rotation of the operating shaft 7 is transmitted to the movable electrode 6 via the operating rod 9, causing the movable electrode 6 to separate from the fixed electrode 5 and enter the shut-off state.

[0029] Next, the automatic closing operation of the electric operating device 3 in the switch 1 of the first embodiment will be described with reference to Figures 4 and 6. Upon automatic closing instruction to the switch 1, voltage is applied to the motor 16 and the electromagnetic solenoid 24.

[0030] When voltage is applied to the electromagnetic solenoid 24, the plunger 26 moves upward, and the gear carrier 22 rotates upward around the connecting shaft 30 as its pivot point, causing the child gear 18b of the parent-child gear 18 to mesh with the output gear 20, as shown in Figure 6. Then, when the motor output shaft of the motor 16 to which voltage is applied rotates, rotational force is transmitted to the motor gear 17, parent gear 18a, child gear 18b, output gear 20, and operating force transmission shaft 19. As shown in Figure 4, the operating force transmission lever 21, one end of which is fixed to the operating force transmission shaft 19, engages with the operating handle 8, which is located in front when the switch is off, from below with its handle engagement portion 21a. As rotational force is transmitted to the operating force transmission shaft 19, the operating force transmission lever 21 moves from its forward position to its upward position, pushing up the operating handle 8, which is engaged with the handle engagement portion 21a, and moving it to the forward position. Then, by engaging the latch mechanism 10 with the operating handle 8 which has been rotated to the upper position, the closed state in which the fixed electrode 5 and the movable electrode 6 are connected is maintained.

[0031] Next, the case in which a power outage occurs during the automatic closing operation of the electric operating device 3 of the switch 1 in the first embodiment will be explained with reference to Figures 5 and 7.

[0032] Assuming that the automatic switching operation applies voltage to the motor 16 and electromagnetic solenoid 24, and the rotation of the motor 16 is transmitted to the operating force transmission shaft 19, the operating force transmission lever 21 pushes up the operating handle 8 and moves from the front position to partway up.

[0033] If a power outage occurs during this automatic switching operation, the application of voltage to the motor 16 and electromagnetic solenoid 24 stops. When the application of voltage to the electromagnetic solenoid 24 stops, the plunger 26 moves downward due to the spring force of the return spring 27, and as shown in Figure 5, the gear carrier 22 rotates downward around the connecting shaft 30 as its pivot point. When the gear carrier 22 rotates downward around the connecting shaft 30 as its pivot point, the meshing between the child gear 18b of the parent-child gear 18 and the output gear 20 is released, as shown in Figure 7. At this point, since spring force has been stored in the interruption spring 11 during the automatic switching operation, the operating shaft 7 rotates in the opposite direction due to the spring force of the interruption spring 11, and the rotation of the operating shaft 7 is transmitted to the movable electrode 6 via the operating rod 9, causing the movable electrode 6 to separate from the fixed electrode 5 and enter the interrupted state. Furthermore, as the operating shaft 7 rotates in the opposite direction, the operating handle 8 also moves to a forward position, and the operating force transmission lever 21, which is engaged with the operating handle 8 from below, is pushed down.

[0034] Thus, in the first embodiment, even if a power outage occurs during the automatic closing operation of the electric operating device 3, the meshing between the output gear 20 to which the operating force transmission lever 21 is fixed and the parent-child gear 18 (child gear 18b) is released, and the operating shaft 7 rotates in the opposite direction due to the spring force of the interruption spring 11. As a result, the rotation of the operating shaft 7 is transmitted to the movable electrode 6 via the operating rod 9, and the movable electrode 6 separates from the fixed electrode 5, returning to the interrupted state. Therefore, even if a power outage occurs during the automatic closing operation, the fixed electrode 5 and the movable electrode 6 stop in a separated state, thus reliably preventing the occurrence of ground fault accidents due to arc discharge.

[0035] Furthermore, the electric operating device 3 of this embodiment is a gear-driven system that transmits the rotation of the motor 16 through multiple gears, and uses a small electromagnetic solenoid 24 to swing the gear carrier 22 that supports the parent-child gear 18 which constitutes part of the gear transmission mechanism. This configuration eliminates the need for a large solenoid that performs automatic switching operations as in conventional devices, thus enabling miniaturization. In addition, compared to conventional motor-driven electric operating devices that, for example, are equipped with capacitors, the electric operating device 3 of this embodiment does not have components such as capacitors that need to be replaced periodically, thus reducing maintenance work. [Switch of the second embodiment]

[0036] Next, Figure 8 shows a switch 31 of a second embodiment according to the present invention. The switch 31 of this embodiment comprises a switch body 2 and an electric operating device 32.

[0037] The switch body 2 has the same structure as the switch body 2 of the first embodiment.

[0038] The difference between the electric operating device 32 of this embodiment and the electric operating device 3 of the first embodiment is that in the first embodiment, the output gear 20 was fixed to the operating force transmission shaft 19, and the operating force transmission lever 21 was fixed to the right end of the operating force transmission shaft 19. However, in the electric operating device 32 of this embodiment, the operating force transmission shaft 19 does not exist, and the operating shaft 7 of the switch body 2 is extended to the right and provided, passing through a pair of operating support plates 15a and 15b, and the output gear 20 is fixed to this operating shaft 7. Also, in this embodiment, the operating force transmission lever 21 does not exist. The other configurations of the electric operating device 32 of this embodiment are the same as those of the electric operating device 3 of the first embodiment. Therefore, the same reference numerals are used for components that are the same as in the first embodiment, and their description is omitted.

[0039] The manual closing operation of the switch 31 in the second embodiment will now be described. In the manual closing operation, no voltage is applied to the electromagnetic solenoid 24, and the plunger 26 moves downward due to the spring force of the return spring 27, causing the gear carrier 22 to rotate downward around the connecting shaft 30 as the pivot point. As a result, the engagement between the child gear 18b of the parent-child gear 18 and the output gear 20 is resolved.

[0040] When the operating handle 8 is manually operated from the forward position to the upward position, the rotation of the operating handle 8 causes the operating shaft 7 to rotate in the forward direction. This rotation of the operating shaft 7 is transmitted to the movable electrode 6 via the operating rod 9, causing the movable electrode 6 to rotate to a position where it connects to the fixed electrode 5. When the operating shaft 7 is rotating in the forward direction, the output gear 20, which is disengaged from the slave gear 18b of the master gear 18, spins freely. Then, by engaging the latch mechanism 10 with the operating handle 8 which has been rotated to the upward position, the closed state in which the fixed electrode 5 and the movable electrode 6 are connected is maintained.

[0041] Next, the automatic closing operation of the electric operating device 32 in the switch 31 of the second embodiment will be described. Upon automatic closing instruction to the switch 31, voltage is applied to the motor 16 and the electromagnetic solenoid 24.

[0042] When voltage is applied to the electromagnetic solenoid 24, the plunger 26 moves upward, and the gear carrier 22 rotates upward around the connecting shaft 30 as its pivot point, causing the child gear 18b of the parent-child gear 18 to mesh with the output gear 20. Then, when the motor output shaft of the motor 16 to which voltage is applied rotates, a positive rotational force is transmitted to the operating shaft 7 via the motor gear 17, parent gear 18a, child gear 18b, and output gear 20. The rotation of the operating shaft 7 is then transmitted to the movable electrode 6 via the operating rod 9, causing the movable electrode 6 to rotate to a position where it connects to the fixed electrode 5. Finally, by engaging the latch mechanism 10 with the operating handle 8 which has been rotated to the upper position, the closed state in which the fixed electrode 5 and the movable electrode 6 are connected is maintained.

[0043] Next, we will explain what happens when a power outage occurs during the automatic closing operation of the electric operating device 32 of the switch 31 in the second embodiment.

[0044] Assuming that the automatic switching operation applies voltage to the motor 16 and electromagnetic solenoid 24, and the rotation of the motor 16 is transmitted to the motor gear 17, master gear 18a, slave gear 18b, output gear 20, and operating shaft 7, the operating handle 8 moves partway up the upper side.

[0045] If a power outage occurs during this automatic switching operation, the voltage applied to the motor 16 and the electromagnetic solenoid 24 stops. When the voltage applied to the electromagnetic solenoid 24 stops, the plunger 26 moves downward due to the spring force of the return spring 27, and the gear carrier 22 rotates downward around the connecting shaft 30 as its pivot point. When the gear carrier 22 rotates downward around the connecting shaft 30 as its pivot point, the engagement between the child gear 18b of the parent-child gear 18 and the output gear 20 is released. At this point, since spring force has been stored in the interruption spring 11 during the automatic switching operation, the spring force of the interruption spring 11 causes the operating shaft 7 to rotate in the opposite direction, and the rotation of the operating shaft 7 is transmitted to the movable electrode 6 via the operating rod 9, causing the movable electrode 6 to separate from the fixed electrode 5 and enter the interrupted state. When the operating shaft 7 is rotating, the output gear 20, which has been released from engagement with the child gear 18b of the parent-child gear 18, performs a free-spinning operation.

[0046] Thus, in the second embodiment as well, when a power outage occurs during the automatic closing operation of the electric operating device 32, the meshing between the output gear 20 to which the operating shaft 7 is fixed and the parent-child gear 18 (child gear 18b) is released, and the operating shaft 7 rotates in the opposite direction due to the spring force of the interruption spring 11. As a result, the rotation of the operating shaft 7 is transmitted to the movable electrode 6 via the operating rod 9, and the movable electrode 6 separates from the fixed electrode 5, returning to the interrupted state. Therefore, even if a power outage occurs during the automatic closing operation, the fixed electrode 5 and the movable electrode 6 stop in a separated state, thus reliably preventing ground fault accidents caused by arc discharge.

[0047] Furthermore, the electric operating device 32 of this embodiment also uses a small electromagnetic solenoid 24 to swing the gear carrier 22, and can be made smaller compared to conventional devices that use a large solenoid. In addition, the electric operating device 32 of this embodiment can reduce maintenance work compared to conventional motor-driven electric operating devices that, for example, are equipped with a capacitor. [Explanation of symbols]

[0048] 1.31 Switch 2 Switch body 3,32 Electric operating device 4 Support plate 5 Fixed electrode 6. Movable electrodes 7 Operation axis 8. Operating handle 9 Operating rod 10. Latch mechanism 11. Shut-off spring 15a,15b Operation support plate 16 motors 17 Motor Gear 18 Parent-child gear 18a Main gear 18b Small gear 18c gear shaft 19. Operating force transmission shaft 20 Output Gear 21. Operating force transmission lever 21a Handle engagement part 22 Gear Carrier 22a, 22b Carrier side plate 22c Carrier base plate 22d First carrier shaft hole 22e Second carrier shaft hole 23 Carrier Holders 23a Holder side plate 23b Holder shaft hole 23c long hole 24 Electromagnetic solenoid 25 Solenoid body 26 Plungers 27. Return spring 30 Connecting shaft

Claims

1. An electric operating device for a switch, comprising: a fixed electrode; a movable electrode that can move toward and away from the fixed electrode; an operating shaft operated by an operating handle; and an operating rod that transmits rotation of the operating shaft in the closing direction to the movable electrode in a direction that connects it to the fixed electrode, and transmits rotation of the operating shaft in the closing direction to the movable electrode in a direction that moves it away from the fixed electrode, Motor and, A motor gear fixed to the output shaft of the aforementioned motor, An output gear fixed to the operating force transmission shaft, An operating force transmission lever, the base end of which is fixed to the operating force transmission shaft and engaged with the operating handle, transmits the rotation transmitted to the operating force transmission shaft as an operating force that rotates the operating handle in the input direction, A parent-child gear system in which a large-diameter parent gear and a small-diameter child gear are integrated, A gear carrier that meshes the motor gear with the main gear and supports the main gear, A carrier holder that supports the gear carrier in a swingable manner, An electric operating device for a switch, characterized by comprising: an electric actuator that, when voltage is applied, swings the gear carrier so that the sub-gear engages with the output gear, and when no voltage is applied, swings the gear carrier so that the sub-gear disengages from the output gear.

2. An electric operating device for a switch, comprising: a fixed electrode; a movable electrode that can move toward and away from the fixed electrode; an operating shaft operated by an operating handle; and an operating rod that transmits rotation of the operating shaft in the closing direction to the movable electrode in a direction that connects it to the fixed electrode, and transmits rotation of the operating shaft in the closing direction to the movable electrode in a direction that moves it away from the fixed electrode, Motor and, A motor gear fixed to the output shaft of the aforementioned motor, An output gear fixed to the aforementioned operating shaft, A parent-child gear system in which a large-diameter parent gear and a small-diameter child gear are integrated, A gear carrier that meshes the motor gear with the main gear and supports the main gear, A carrier holder that supports the gear carrier in a swingable manner, An electric operating device for a switch, characterized by comprising: an electric actuator that, when a voltage is applied, swings the gear carrier in a direction in which the sub-gear meshes with the output gear, and when no voltage is applied, swings the gear carrier in a direction in which the meshing of the sub-gear and the output gear is disengaged.

3. The electric actuator is an electromagnetic solenoid having a solenoid body and a plunger with one end and the other end protruding from the solenoid body, wherein one end of the plunger is connected to the gear carrier and a return spring is engaged with the other end of the plunger. When a voltage is applied to the electromagnetic solenoid, the plunger is moved in the first direction, causing the gear carrier to swing in a direction in which the sub-gear engages with the output gear, and a spring force is stored in the return spring. The electric operating device for a switch according to claim 1 or 2, characterized in that, when no voltage is applied to the electromagnetic solenoid, the spring force of the stored-energy return spring moves the plunger in a second direction opposite to the first direction, thereby swinging the gear carrier in a direction that disengages the meshing of the sub-gear and the output gear.

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