JP2002184272A - Switch operating mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of parts by simplifying a structure. SOLUTION: In a switch operating mechanism wherein a movable contact 13 actuated by rotations of a rotating shaft 18 to open/close contacts, rotational driving force of the rotating shaft 18 is transmitted to the movable contact 13 through a rotating element 17 stored in a guide member 16 capable of being set up to any shape and length.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation mechanism for a switch such as a disconnecting switch or a grounding switch used in high-voltage equipment, and more particularly, to the number of driving devices for operating a plurality of switches. The present invention relates to a switchgear operation mechanism that can be reduced.

[0002]

2. Description of the Related Art In general, a high-voltage device incorporates a plurality of disconnecting switches as switches for changing the circuit configuration of a high-voltage circuit, and a grounding device for ensuring safety during work. It has been incorporated. These disconnectors and grounding devices can be classified as switches that open and close between high-voltage circuits or between the high-voltage circuit and the grounding circuit.

[0003] The switch may be housed in a closed container. One example is a gas insulated switchgear in which a high-voltage conductor supported by an insulator is housed inside the sealed container and filled with an insulating gas.

In order to operate such a switch,
An operation mechanism for transmitting the driving force is required for each. When separate drive devices are attached to the operation mechanisms of a plurality of switches, the number of drive devices increases, and the cost increases accordingly. Therefore, attempts have been made to operate a plurality of switches with one drive device. One of them is a three-position switch.

[0005] The three-position switch is configured to have both functions of a disconnector and a grounding device, such as a disconnector with a grounding device. This is a device that performs operation of three position states called grounding with one operating device. As an electric operating mechanism (hereinafter, simply referred to as an operating mechanism) of a three-position switch, for example, Japanese Unexamined Patent Application Publication No. 3-133018 The disclosed operating mechanism is known. This operation mechanism is configured as shown in FIGS.

First, FIG. 14 shows the configuration of a disconnector with a grounding device, and FIG. 15 shows the periphery of the Geneva gear mechanism of FIG. 14 and 15, the electric motor 1 and
A drive unit is constituted by the speed reducer 2, the gears 3 to 5, and the Geneva gear mechanism 7, and the rotation of the output shaft 6 causes the blade 12 of the disconnecting unit 11 to enter the input position via the link mechanism 10 and the like,
Rotate to the off position or ground contact position.

The Geneva driver 8 of the Geneva gear mechanism 7
Has a gear portion 8I which engages with the gear 5 around its periphery, and has a locking arc portion a and a driving pin b on its side surface.
It has. The Geneva wheel 9 has three arcuate concave surfaces c1 to c3 that can be engaged with the arcuate portion a on one side of the main body.
And two radially extending grooves d1 and d1 respectively provided between the arcuate concave surfaces c1 to c3 and through which the pin b can enter and exit.
2 is provided.

Next, the operation of the above-described operation mechanism will be described with reference to FIG.
This will be described with reference to (a) to (e).

FIG. 16A shows the cutting position of the operating mechanism. The arc portion a of the Geneva driver 8 engages with the arcuate concave surface c2 of the Geneva wheel 9 to lock the Geneva wheel 9 and lock the blade 12. It is in the cutting position.

In this state, the motor 1 is turned on for the on operation.
Is started, the gear 5 causes the Geneva driver 8 to rotate. When the pin b reaches the position shown in FIG. 16 (b) where it engages with the groove d1, the Geneva wheel 9 starts rotating, and FIG.
The link mechanism 10 and the blade 12 operate as shown in FIG. When the Geneva driver 8 rotates to the position shown in FIG. 16D, the pin b separates from the groove d1, and the arc portion a engages with the arc concave surface c1 as shown in FIG. Stops. Since the operation from the on position to the off position can be easily inferred from the above operation description, the description is omitted.

[0011]

As described above, the conventional operating mechanism has the functions of a disconnector and a grounding device together,
This is a three-position switch operating mechanism in which three operations of disconnecting switch (on (close), off (open), and grounding) are performed by a single driving device. The conventional operation shown in FIGS. PMDA had the following issues.

That is, since the conventional operation mechanism uses the operation connecting means such as the link mechanism 10, the structure is complicated, the number of parts is large, and it is difficult to reduce the cost.
In addition, in order to operate the plurality of disconnectors, a plurality of driving devices such as electric motors are required, so that it is difficult to reduce the cost. Further, in the structure using the blades 12 as described above, it is difficult to improve the withstand voltage performance of the switchgear, particularly when housed in a closed container, and it is difficult to increase the voltage.

[0013] These problems are not limited to the three-position switch described above, but are common problems to a conventional operating mechanism for simultaneously operating a plurality of disconnectors.

The present invention has been made in view of the above circumstances, and has as its object to provide a switch operating mechanism capable of simplifying the structure and reducing the number of parts.

Another object of the present invention is as follows.
An object of the present invention is to provide a switch operating mechanism capable of reducing the number of driving devices for operating a plurality of switches.

[0016]

According to a first aspect of the present invention, there is provided a switch operating mechanism for opening and closing a contact between movable contacts by rotating a rotating shaft. The rotary driving force of the rotating shaft is transmitted to the movable contact via a rotating body housed in a guide member that can be set to an arbitrary shape and length.

According to the first aspect of the present invention, the guide member can be set to any shape and length, and the guide member accommodates the rotating member. Therefore, the guide member accommodates the rotating member. Driving force can be transmitted to any direction and location. Thus, the structure of the operation mechanism can be simplified, and the number of components can be reduced.

According to a second aspect of the present invention, in the switch operating mechanism of the first aspect, a plate is fixed to the rotating shaft, and a driving force is applied to the rotating body by the rotating force of the plate. It is characterized by.

According to the second aspect of the present invention, the rotational motion can be easily converted into a linear motion by applying a driving force to the rotating body by the rotational force of the plate, that is, the amount of movement in the rotational direction. Can be converted into the amount of movement in the linear direction, so that the size of the operating mechanism can be reduced in consideration of the length of the movable contact of the switch.

According to a third aspect of the present invention, in the switch operating mechanism according to the first or second aspect, the guide member has a groove formed along the axial direction through which the plate can be inserted. I do.

According to the third aspect of the present invention, since the plate is formed along the axial direction of the guide member so that the plate can be inserted into the groove, the plate can be continuously rotated, and the electric motor is used as the operating power. Easy to use.

According to a fourth aspect of the present invention, in the switch operating mechanism according to the second or third aspect, the plate is formed in a fan shape.

According to the fourth aspect of the present invention, since the plate is formed in a sector shape, the section in which the driving force is generated during one rotation of the rotating shaft can be controlled by the opening angle of the sector shape.

According to a fifth aspect of the present invention, in the switch operating mechanism of the third aspect, the guide member is provided with a plurality of guides having a plurality of mutually different radii of curvature.

According to the fifth aspect of the present invention, the guide member is provided with a plurality of guides having a plurality of different radii of curvature, so that the driving force is generated on the rotating body during one rotation of the rotating shaft. It is possible to control.

According to a sixth aspect of the present invention, in the switch operating mechanism of the first or fifth aspect, at least one of the guides having different radii of curvature is distorted in a direction of a center axis of the rotating shaft. It is characterized by the following.

According to the sixth aspect of the present invention, at least one of the guides is distorted in the direction of the center axis of the rotating shaft, so that the driving force is generated on the rotating body during one rotation of the rotating shaft. To be able to control.

According to a seventh aspect of the present invention, in the switch operating mechanism according to any one of the third to sixth aspects, a partition for changing the moving direction of the rotating body is provided in the passage of the guide member. It is characterized by.

According to the seventh aspect of the present invention, since the partition for changing the moving direction of the rotating body is provided in the passage of the guide member, the driving force is transmitted also in the direction having the rotating surface and the angle. Therefore, the means for transmitting the driving force can be easily changed.

According to an eighth aspect of the present invention, in the switch operating mechanism of the first aspect, a shield is provided on the movable contact, and a driving force is accumulated between the shield and the movable contact. The spring is interposed.

According to the eighth aspect of the present invention, since the spring for storing the driving force is interposed between the shield portion and the movable contact, the movable contact is opened by the driving force accumulated in the spring. Operation is enabled.

According to a ninth aspect of the present invention, in the operation mechanism of the switch according to the first aspect, two operation mechanism main bodies are installed, and one movable contact is operated by these operation mechanism main bodies. I do.

According to the ninth aspect of the present invention, by operating one movable contact with the two operating mechanism bodies,
The movable contact can be opened and closed irrespective of the direction of rotation of the plate that applies a driving force to the rotating body.

According to a tenth aspect of the present invention, in the switch operating mechanism of the first aspect, a plurality of operating mechanism main bodies are arranged side by side along the rotation axis.

According to the tenth aspect of the present invention, since a plurality of operation mechanism main bodies are arranged in parallel along the rotation axis, a plurality of switches can be operated through one driving force generating means.

[0036]

Embodiments of the present invention will be described below with reference to the drawings.

[First Embodiment] FIG. 1 is a partial sectional view showing a first embodiment of a switch operating mechanism according to the present invention, and FIG. 2 shows a first embodiment of a switch operating mechanism according to the present invention. FIG. 3 is a side view of the switch operating mechanism according to the first embodiment of the present invention as viewed from a direction parallel to the rotation axis, and FIGS. 4 to 8 are views of the present invention. It is a partial section perspective view showing operation of a 1st embodiment of an operation mechanism of a switch. 1 to 3 correspond to the open state of the opening and closing device.

As shown in FIGS. 1-3, the movable contact 13
Is housed so as to be able to protrude and retract in a hole 14a of a shield part 14 formed in a dish shape, and a movable rod 15 is fixed inside. The movable rod 15 is attached to the end of a tubular guide member 16 having a passage formed in a substantially ring shape as a whole from a metal or a synthetic resin or the like. Are filled with a plurality of balls 17 as rotating bodies. Here, the guide member 1
6 can be set to any shape and length, and may be formed in a pipe shape.

Further, by moving the movable contact 13 to reach the fixed contact 32 inside the fixed shield 31, the switchgear can be closed.

As shown in FIG. 2, the guide member 16 is provided with arcuate guides 16a, 16b and 16c having different radii of curvature. A rotating shaft 18 is disposed substantially at the center of the guide member 16, and a fan-shaped rotating plate 19 as a plate is fixed to a peripheral surface of the rotating shaft 18.

A groove 20 is formed in the guide member 16 along the axial direction through which a rotary plate 19 that rotates with the rotation of the rotary shaft 18 can be inserted. The ball 17 housed in 16 is configured to be pushed and moved. The guides 16a and 16c of the guide member 16 are distorted in the direction of the rotating shaft 18 of the rotating plate 19 as shown in FIG.

Further, the flange portion 13a of the movable contact 13
A coil spring 21 for accumulating a driving force is interposed between the coil spring 21 and the shield portion 14.

Next, the operation of the present embodiment will be described.

In the operation mechanism of the switch shown in FIG.
When the rotating shaft 18 is rotated to rotate the rotating plate 19 in the direction of the arrow and the tip 19 a of the rotating plate 19 pushes the ball 17 in the guide member 16, the movable rod 15 is pushed. Then, the movable contact 13 fixed to the movable rod 15 moves so as to protrude upward from the hole 14a of the shield part 14 as shown in FIG.

At this time, the coil spring 21 is compressed and contracted,
The repulsive force is accumulated. Further, when the rotating plate 19 continues to rotate in the same direction and the tip 19a of the rotating plate 19 reaches the vicinity of the junction between the guide 16b and the guide 16c as shown in FIG. 5, the movable contact 13 is completely closed. Becomes At this time, since the ball 17 is accommodated in the guide 16c distorted in the direction of the rotating shaft 18, it is not pushed further by the rotating plate 19.

Further, while the rotating plate 19 is rotating, FIG.
As shown in FIG.
The movable contact 13 does not return due to the urging force of the coil spring 21 because the state 7 is blocked. Therefore, while corresponding to the fan-shaped opening angle of the rotating plate 19,
The movable contact 13 is kept in the closed state.

Further, the rotating plate 19 is rotated, and the rotating plate 1 is rotated.
When the leading end 19a of the second member 9 passes through the joint between the guide 16b and the guide 16c, the return of the ball 17 cannot be stopped, and the movable contact 13 is opened by the urging force of the coil spring 21 as shown in FIG. Return to At this time, the ball 17 is again filled in the guide 16b.

When the rotating plate 19 continues to rotate in the same direction, the opening and closing of the movable contact 13 are repeated in the same manner. When the rotating plate 19 rotates in the reverse direction, the ball 17 is housed in the guide 16a as shown in FIG. Therefore, the rotating plate 19 only repeats the storage of the ball 17 in the guide 16a and the refilling of the ball 17 into the guide 16b by gravity, and the opening and closing of the movable contact 13 does not occur.

As described above, when the present embodiment is used, the movable contact 13 is turned on only during a period corresponding to the opening angle of the fan-shaped rotating plate 19 within 360 degrees of one rotation of the rotating shaft 18. be able to.

As described above, according to the present embodiment, the guide member 16 can be set to any shape and length, and the ball 17 is stored in the guide member 16.
The driving force can be transmitted to an arbitrary direction and place by the ball 17 stored in the guide member 16. Thus, the structure of the operation mechanism can be simplified, and the number of components can be reduced.

Further, according to the present embodiment, by applying a driving force to the ball 17 with the rotational force of the rotating plate 19, the rotational movement can be easily converted into a linear movement, that is, the amount of movement in the rotational direction. Can be converted into the amount of movement in the linear direction, so that the size of the operating mechanism can be reduced in consideration of the length of the movable contact of the switch.

Further, according to the present embodiment, since the groove 20 through which the rotating plate 19 can be inserted is formed along the axial direction of the guide member 16, the rotating plate 19 can be continuously rotated, and the operating power can be increased. It becomes easy to use the electric motor. And
By forming the rotating plate 19 in a sector shape, the section in which the driving force is generated during one rotation of the rotating shaft 18 can be controlled by the opening angle of the sector shape.

The guide member 16 includes guides 16a, 16b and 16 having a plurality of different radii of curvature.
The continuous arrangement of c makes it possible to control the angle at which the driving force is generated on the ball 17 during one rotation of the rotating shaft 18.

By changing the guides 16a and 16c of the guide member 16 in the direction of the rotating shaft 18 of the rotating plate 19, the angle of the driving force generated on the ball 17 during one rotation of the rotating shaft 18 is controlled. To be able to. In this case, the guides 16a, 16b and 16c
At least one of them may be deformed in the direction of the central axis of the rotating shaft 18.

Further, since the coil spring 21 for accumulating the driving force is interposed between the shield portion 14 and the movable contact 13, the opening operation of the movable contact 13 is performed by the driving force accumulated in the coil spring 21. Is possible.

[Second Embodiment] FIG. 9 is a partial sectional view showing a switch operating mechanism according to a second embodiment of the present invention.
FIG. 4 is a side view of a switch operating mechanism according to a second embodiment of the present invention, as viewed from a rotation axis direction. The same or corresponding parts as those in the first embodiment are denoted by the same reference numerals and described. The same applies to the following embodiments.

In this embodiment, the operation mechanism of the switch of the first embodiment shown in FIG. 1, that is, the operation mechanism main bodies 22a, 2
2b on the rotating shaft 18 in the opposite direction by 180 degrees. The movable contact 13 is connected to the two movable rods 15a and 15b.

Next, the operation of the present embodiment will be described.

In the switch operating mechanism of the second embodiment shown in FIGS. 9 and 10, when the rotating shaft 18 is rotated counterclockwise, a driving force is transmitted to the movable rod 15a. At this time, the driving force is not transmitted to the ball 17 of the operation mechanism main body 22b, and the movable rod 15b
, No driving force is transmitted. Therefore, in this rotation direction, the movable contact 1 is driven by the driving force of the movable rod 15a.
3 opens and closes.

When the rotating shaft 18 is rotated clockwise, the driving force by the movable rod 15b acts, but the driving force by the movable rod 15a does not act. Therefore, the movable contact 13 is opened and closed by the driving force acting on the movable rod 15b.

As described above, according to the present embodiment, the rotating shaft 1
The movable contact 13 can be opened and closed regardless of the direction of rotation of the movable contact 8. That is, the movable contact 13 can be opened and closed regardless of the rotation direction of the rotating plate 19 that applies a driving force to the ball 17. In addition, fan-shaped rotating plate 1
By adjusting the relative position of No. 9, it is possible to adjust the open and close times for each rotation direction.

[Third Embodiment] FIG. 11 is a structural view of a switch operating mechanism according to a third embodiment of the present invention viewed from an oblique direction of a rotating shaft, and FIG. 12 is a switch operating mechanism according to the present invention. FIG. 10 is a side view illustrating a configuration of the third embodiment as viewed from a rotation axis direction.

As shown in FIGS. 11 and 12, a partition 23 having an inclination for changing the moving direction of the ball 17 is provided in the guide member 16. Also,
The tip portion 19a of the fan-shaped rotary plate 19 is also provided with an inclination for moving the ball 17. The movable contact 1
3, movable rod 15, coil spring 21 and guide member 16
Since the state of the ball 17 is the same as that of the first embodiment, it is omitted in FIGS. 11 and 12.

Next, the operation of the present embodiment will be described.

In the switch operating mechanism of the third embodiment shown in FIGS. 11 and 12, when the rotating shaft 18 is rotated counterclockwise, the ball 17 is pushed by the rotating plate 19. The ball 17 moves along the guide 16b and contacts the inclined end surface 23a of the partition 23 to change the moving direction.

In this direction, a guide 16c that reaches the movable rod 15 is provided, so that the ball 17 moves in this direction and pushes the movable rod 15. As a result, the movable contact 13 performs a closing operation.

When the rotating plate 18 passes through the partition 23, the movable contact 13
Performs the opening operation. When the rotating plate 19 rotates in the opposite direction, the balls 17 are accommodated in the guide portions 16c having different radii and do not act on the movable rod 15. Therefore, no driving force is transmitted to the movable rod 15.

As described above, according to the present embodiment, the partition 23 for changing the moving direction of the ball 17 is provided in the passage of the guide member 16, so that the driving force can be applied also in the direction having the rotating surface and the angle. Thus, the means for transmitting the driving force can be easily changed.

Further, as in the second embodiment, by combining two switch operating mechanisms of this embodiment in opposite directions, the movable contact 13 can be opened and closed even when the rotating shaft 18 rotates in any direction. A possible switch operating mechanism can be provided.

Further, by adjusting the opening angle and the relative position of the fan-shaped rotary plate 19, it is possible to adjust the circuit and the closing time for each rotation direction.

[Fourth Embodiment] FIG. 13 is a partial sectional view showing a switch operating mechanism according to a fourth embodiment of the present invention.

In the present embodiment, a plurality of switch operating mechanisms of the second embodiment, that is, operating mechanism bodies 22a to 22d are provided on the rotating shaft 18. Although not shown in FIG. 13, similarly to FIG.
22d are provided with a fixed-side shield and a fixed-side contact facing each other. Thus, the plurality of disconnectors and the grounding device can be driven by one driving device.

Further, by adjusting the relative positions of the fan-shaped rotary plates 24 to 27 in the operation mechanism main bodies 22a to 22d, it is possible to adjust the closing time of each disconnector or grounding device. For this reason, a combination of various open / close states of a plurality of disconnectors and grounding devices can be created with only one drive device that rotates the rotating shaft 18, and the number of drive devices for operating the plurality of switches is reduced. Can be reduced.

The present invention can be variously modified without being limited to the above embodiments. For example, in each of the above embodiments, an example in which the ball 17 is used as the rotating body has been described. However, the present invention is not limited to this, and a rotating body such as a cylindrical roller or a barrel-shaped roller may be used.

[0075]

As described above, according to the present invention, since the rotating body is housed in the guide member which can be set to any shape and length, the rotating body housed in the guide member can be used in any direction. It can transmit the driving force to the place. Accordingly, it is not necessary to use an operation connecting means such as a link mechanism, and the structure of the operation mechanism can be simplified, and the number of components can be reduced.

Further, according to the present invention, by arranging a plurality of operation mechanism main bodies along the rotation axis, it is possible to reduce the number of driving devices for operating the plurality of opening / closing devices.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional view showing a first embodiment of a switch operating mechanism according to the present invention.

FIG. 2 is a side view of the switch operating mechanism according to the first embodiment of the present invention, as viewed from a rotation axis direction.

FIG. 3 is a side view of the switch operating mechanism according to the first embodiment of the present invention as viewed from a direction parallel to a rotation axis.

FIG. 4 is a partial cross-sectional perspective view showing the operation of the switch operating mechanism according to the first embodiment of the present invention.

FIG. 5 is a partial sectional perspective view showing the operation of the first embodiment of the switch operating mechanism according to the present invention.

FIG. 6 is a partial cross-sectional perspective view showing the operation of the switch operating mechanism according to the first embodiment of the present invention.

FIG. 7 is a partial sectional perspective view showing the operation of the first embodiment of the switch operating mechanism according to the present invention.

FIG. 8 is a partial cross-sectional perspective view showing the operation of the first embodiment of the switch operating mechanism according to the present invention.

FIG. 9 is a partial sectional view showing a second embodiment of the switch operating mechanism according to the present invention.

FIG. 10 is a side view of a switch operating mechanism according to a second embodiment of the present invention, as viewed from a rotation axis direction.

FIG. 11 is a configuration diagram of a switch operating mechanism according to a third embodiment of the present invention when viewed from a diagonal direction of a rotation axis.

FIG. 12 is a side view of a switch operating mechanism according to a third embodiment of the present invention, as viewed from a rotation axis direction.

FIG. 13 is a partial sectional view showing a fourth embodiment of the switch operating mechanism according to the present invention.

FIG. 14 is a perspective view showing a configuration of a conventional disconnector with a grounding device.

FIG. 15 is a configuration diagram showing a Geneva gear mechanism of a conventional disconnector with a grounding device.

16 (a) to (e) are explanatory views showing the operation of a conventional operation mechanism of a disconnector with a grounding device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 13 Movable contact 14 Shield part 15 Movable rod 16 Guide 17 Ball (rotating body) 18 Rotating shaft 19 Rotating plate (plate) 20 Groove 21 Coil spring 22a, 22b Operating mechanism main body 23 Partition 24, 25, 26, 27 Rotating plate 31 Fixed side shield 32 Fixed side contact

Claims (10)

[Claims] An operating mechanism of a switch for opening and closing a contact between movable contacts by rotation of a rotating shaft, wherein a guide member capable of setting a rotational driving force of the rotating shaft to an arbitrary shape and length. An operation mechanism for a switch, wherein the operation is transmitted to the movable contact through a stored rotating body. 2. A switch operating mechanism according to claim 1, wherein a plate is fixed to said rotating shaft, and a driving force is applied to said rotating body by a rotating force of said plate. Operation mechanism. 3. The switch operating mechanism according to claim 1, wherein the guide member has an axially extending groove through which the plate body can be inserted. . 4. The switch operating mechanism according to claim 2, wherein said plate is formed in a fan shape. 5. The switch operating mechanism according to claim 3, wherein said guide member is provided with a plurality of guides having a plurality of mutually different radii of curvature. 6. The switch operating mechanism according to claim 1, wherein at least one of the guides having different radii of curvature is distorted in a direction of a center axis of the rotating shaft. Vessel operation mechanism. 7. The switch operating mechanism according to claim 3, wherein a partition for changing a moving direction of the rotating body is provided in a passage of the guide member. Operation mechanism. 8. The switch operating mechanism according to claim 1, wherein a shield portion is provided on the movable contact, and a spring for accumulating a driving force is interposed between the shield portion and the movable contact. An operation mechanism for a switch, characterized by being characterized in that: 9. An operating mechanism for a switch according to claim 1, wherein two operating mechanism main bodies are installed, and one movable contact is operated by these operating mechanism main bodies. . 10. The switch operating mechanism according to claim 1, wherein a plurality of operating mechanism bodies are arranged side by side along a rotation axis.