JPH05325734A - Manual operating device of switch - Google Patents

Abstract

PURPOSE:To easily and safely change the initial torque accumulated as energy in a torsion bar linearly to an optional value in an energy accumulating mecha nism in an operating device of switch. CONSTITUTION:A regulating lever 28, a regulating rod 32, and a regulating nut 35 are connected to the end part of one torsion bar 2 of two torsion bars 1, 2 juxtaposed on the energy accumulating part of a manual operating device of switch. The regulating nut 35 is spirally fitted to the regulating rod 32 and moved, whereby the regulating lever 28 is rotated, and the torsion bar 2 can be easily set to a determined twisting angle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch operating device for opening and closing an electric circuit.

[0002]

2. Description of the Related Art FIG. 9 is a perspective view showing a power storage mechanism in a conventional switch operating device. In FIG. 9, the first torsion bar 1, the second torsion bar 2, and the first torsion bar 1 and the second torsion bar 1 are included in the energy storage mechanism that stores the rotational driving force for driving the switch. A joint portion 40 that connects the torsion bar 2 is provided. The joint portion 40 is provided with a first joint 3 to which one end of the first torsion bar 1 is fixed and a second joint 4 to which one end of the second torsion bar 2 is fixed. The other end of the second torsion bar 2 is fixed to a fixing member 9 fixed to a fixing portion such as a casing of the operating device. The first joint 3 and the second joint 4 are rotatably connected by a pin 5,
One spacer 6 is inserted between the joint 3 and the second joint 4 and the first joint 3 and the second joint 4 are fastened with bolts 7 and nuts 8. In the conventional energy storage mechanism, adjustment of the initial torque of the energy storage mechanism is performed by changing the number of the spacers 6 mounted between the first torsion bar 1 and the second torsion bar 2 to change the first torque. This is done by changing the distance between the torsion bar 1 and the second torsion bar 2.

The other end of the first torsion bar 1 having one end fixed to the first joint 3 is fixed to the drive shaft portion 10. The drive shaft portion 10 is supported by bearings 11 and 12 fixed to a casing (not shown) of the device. A first lever 13 is fixed to the drive shaft portion 10, and the first lever 13 is connected to a second lever 17 via a link rod 14.
It is mechanically connected to work with. The second lever 17 is fixed to the rotating shaft 18 of the energy storage gear 22. The rotating shaft 18 is supported by bearings 19 and 20 fixed to the housing of the device. A one-way clutch 21 is provided between the rotary shaft 18 and the energy storage gear 22, and when the energy storage gear 22 rotates in the arrow I direction, the rotation shaft 18 moves in the same direction as the arrow I direction. When the rotary shaft 18 rotates and the rotary shaft 18 rotates in the direction opposite to the arrow I direction, the rotation is not transmitted to the energy storage gear 22.

In the conventional switch operating device having the above-described structure, the conventional energy storing mechanism operates as a motor.
By driving 24 to rotate the energy storage small gear 23 in the arrow G direction by a predetermined number of rotations, the energy storage large gear 22 is rotated in the arrow I direction by a predetermined angle. The rotational movement of the energy storage gear 22 in the direction of arrow I is transmitted to the second lever 17 via the one-way clutch 21 and the rotary shaft 18, and drives the link rod 14 in the direction of arrow H. When the link rod 14 is driven in the direction of arrow H, the first lever 13 rotates in the direction of arrow K, so that the first torsion bar 1 interlocking with the first lever 13 has its central axis. It is twisted at a certain angle in the center. The first torsion bar 1 which is a rod-shaped elastic body is twisted, and the second torsion bar 2 which is a rod-shaped elastic body connected to the first torsion bar 1 through the joint portion 40 is twisted. , The first torsion bar 1 and the second
Torsion bar 2 stores the resilience. In this way, when the first lever 13 is rotated by a predetermined angle to bring the energy storage mechanism into a complete energy storage state having a predetermined restoring force, the drive power source of the electric motor 24 is shut off by a limit switch (not shown). Then, the electric motor 24 is stopped. At this time, the first lever 13 is held at the position of the above-mentioned complete energy storage state by the latch mechanism (not shown) provided in the operating device. Therefore, the first torsion bar 1 of the energy storage mechanism
And the restoring force of the second torsion bar 2 is kept stored. The restoring force stored in the storage mechanism as described above is instantaneously released by tripping the latch mechanism, and only the initial torque is stored. When the restoring force of the energy storage mechanism is released, the drive shaft portion 10 connected to the first torsion bar 1 is rotated, and the opening / closing operation portion of the switch connected to this drive shaft portion 10 is driven to open. Alternatively, it was configured to be closed drive.

[0005]

Since the energy storage mechanism in the conventional switch operating device is constructed as described above, the first torsion bar 1 and the second torsion bar 2 are provided.
The initial drive torque, that is, the rotational drive force of the energy storage mechanism in the release completion state is equal to the first joint 3 and the second
Since it was adjusted by the number of spacers 6 sandwiched between the joint 4 and the joint 4, it was impossible to linearly change the value of the initial torque. Further, in order to change the initial torque, a special jack bolt is used to widen the distance between the first joint 3 and the second joint 4 so that a predetermined number of spacers 6 are mounted, It was a very difficult and dangerous task. The present invention has been made in order to solve the above problems, and a switch with high reliability and safety that can easily and linearly change the initial torque in the energy storage mechanism to a desired value. The purpose is to obtain an operating device.

[0006]

A switch operating device according to the present invention includes a rod-shaped first elastic body having one end connected to an opening / closing operation portion of the switch, and the other end of the first elastic body. A joint portion fixed to the first elastic body, a rod-shaped second elastic body having one end fixed to the joint portion and arranged substantially parallel to the first elastic body, and a second elastic body other than the second elastic body. An adjusting lever part that mechanically connects the ends and rotates the second elastic body at a predetermined twist angle about a central axis parallel to the arrangement direction of the second elastic body, and the adjusting lever part. And an initial torque adjusting part for driving the adjusting lever part to hold the adjusting lever part in a predetermined position.

[0007]

The switch operating device according to the present invention is initially provided in the accumulator having a rod-shaped first elastic body and a rod-shaped second elastic body which is arranged in parallel with and connected to the first elastic body. The torque, that is, the rotational driving force in the released state of the energy storage unit, operates the initial torque adjustment unit to center the first elastic body on a central axis parallel to the arrangement direction of the first elastic body. Is set by rotating to a predetermined twist angle and holding the initial torque adjusting portion at that position.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a switch operating device of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a power storage unit 50 of a power storage mechanism in a switch operating device according to an embodiment of the present invention. In FIG. 1, a switch (not shown)
A first torsion bar 1 which is a rod-shaped elastic body, and a first torsion bar 1 which are arranged in parallel to each other are provided in a power storage unit 50 for storing a rotational driving force for driving to open or close. A second torsion bar 2 which is a rod-shaped elastic body is provided. One end of the first torsion bar 1 and one end of the second torsion bar 2 are fixedly connected to a joint 26. The other end of the first torsion bar 1 is fixed to a drive shaft portion 10 for performing an opening operation or a closing operation of the switch, and the rotation center axis of the drive shaft portion 10 is the first torsion bar 1 It is fixed so as to coincide with the central axis of the arrangement direction.

A supporting shaft portion 27 is fixed to the other end of the second torsion bar 2 whose one end is fixed to the joint 26, and the supporting shaft portion 27 fixes the casing of the operating device or the like. It is rotatably supported by a fixing member 9 fixed to the portion. As shown in FIG. 1, the collar 27 is provided at the end of the support shaft 27.
a is formed, and the collar portion 27a prohibits the support shaft portion 27 from coming off the fixing fitting 9. One end of an adjusting lever 28 is fixed to the support shaft portion 27 fixed to the second torsion bar 2, and the other end of the adjusting lever 28 is pivotally supported by one end of an adjusting rod 32 by a pin 30. Has been done.

FIG. 2 shows a second torsion bar 2 and a supporting shaft portion.
27 is a sectional view showing a connected state of the fixing metal fitting 9, the adjusting lever 28 and the like, and FIG. 3 is a sectional view showing a connected state of the adjusting lever 28, the pin 30, the adjusting rod 32 and the like. As shown in FIG. 2, a stop ring 29 is attached to the support shaft portion 27, and by attaching the stop ring 29, the support shaft portion 27 is attached.
It is forbidden to prevent 27 from coming off from adjustment lever 28. As shown in FIG. 3, the adjusting rod 32, which is rotatably connected to the adjusting lever 28 via the pin 30, is arranged so as to penetrate through the flange portion 37 fixed to the fixing fitting 9. There is. A screw portion 32a is formed on the adjusting rod 32, and an adjusting nut 35 and a lock nut 36 are screwed onto the screw portion 32a. Therefore, by moving the adjusting nut 35 and the lock nut 36 while screwing the adjusting nut 32 onto the adjusting rod 32, the adjusting lever 28 is configured to rotate about the support shaft portion 27.

The initial torque adjusting operation of the energy accumulating section 50 in the switch operating device of the present embodiment constructed as above will be described with reference to FIG. First, in a state where the energy storage section 50 is completely deenergized, that is, in a state where the drive shaft section 10 is rotated by a predetermined angle and a predetermined rotational driving force is released, the adjusting nut 35 is rotated to move the adjusting rod 32. By moving in the arrow F direction, the adjusting lever 28 rotates in the arrow G direction.
By rotating the adjusting lever 28 in the direction of arrow G, the second torsion bar 2 connected to the adjusting lever 28 via the support shaft portion 27 is twisted and the restoring force is accumulated. Next, when the second torsion bar 2 reaches a predetermined twist angle, the lock nut 36 screwed to the adjusting rod 32 is moved on the adjusting rod 32 and brought into contact with the adjusting nut 35. By bringing the lock nut 36 into contact with the adjusting nut 35, the adjusting lever 28 fixes the second torsion bar 2 in a state where a predetermined restoring force is accumulated. As a result, a desired initial torque is stored in the second torsion bar 2 and the energy storage unit 50 having the second torsion bar 2.

Although the adjusting lever 28, the adjusting rod 32, the adjusting nut 35 and the like are provided to adjust the initial torque of the energy accumulating portion 50 in the above-mentioned embodiment, the energy accumulating portions of other embodiments are provided.
As shown in the perspective view of FIG. 4 as 60, the initial torque of the accumulator 60 is adjusted by the worm wheel 35 fixed to the end of the second torsion bar 2 and the worm 38 meshing with the worm wheel 35. Can be configured to. In FIG. 4, components having the same functions as those of the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted.
In FIG. 4, a support shaft portion 27 is fixed to the end portion of the second torsion bar 2, and a key 39 is attached to the support shaft portion 27 so that the support shaft portion 27 is configured to interlock with the worm wheel 35. Both ends of a worm 38 that meshes with the worm wheel 35 are rotatably supported by bearings 36 and 37 fixed to a fixing member 9.

As shown in FIG. 4, an end portion 38a of the worm 38, which projects from the bearing 37, is formed in a hexagonal shape, and is configured so that an initial torque adjusting tool (not shown) can be mounted and rotated. There is. In the energy storage unit 60 configured as described above, in order to set the energy storage unit 60 to have a desired initial torque, an initial torque adjusting tool is attached to the end portion 38a of the worm 38 and the worm 38 is attached. Is rotated by a predetermined number of rotations. As a result, the worm wheel 35 twists the second torsion bar 2 by a predetermined twist angle, so that a desired initial torque is stored in the storage unit 60. In this embodiment, the worm wheel 35 and the worm 38 having a large reduction ratio are used.
Therefore, it is not necessary to provide a special mechanism for holding the second torsion bar 2 at a predetermined torsion angle.

The opening / closing operation of the operating device for the switch using the energy storage units 50 and 60 configured as described above will be described with reference to the drawings. FIG. 5 is a configuration diagram showing the inside of the operating device, and shows the internal operating state when the switch 51 driven and operated by the operating device is in the closed state. In FIG.
The movable contact of the switch 51 that opens and closes the electric path is mechanically connected to the drive lever 52 disposed inside the operating device. To the drive lever 52, the first torsion bar 1 described in the above-mentioned energy storage units 50 and 60 is connected via the drive shaft unit 10 as the breaking spring 1a. That is, the blocking spring 1a, which is a rod-shaped elastic body, is arranged in the direction perpendicular to the paper surface in FIG. Therefore, the drive lever 52 is biased in the direction of arrow A about the drive shaft portion 10 by the rotational driving force stored in the storage portion of the cutoff spring 1a.
However, as shown in FIG. 5, the trip latch 56, whose rotation is prohibited by the trip trigger 55 that interlocks with the trip electromagnet 53, engages with the first pin 57 provided on the drive lever 52. Therefore, the drive lever 52 is locked at the position shown in FIG. An oil shock absorber 59 is connected to the drive lever 52, and the oil shock absorber 59 reduces the impact of the movable contact of the switch 51 during the opening / closing operation.

As shown in FIG. 5, when the switch 51 is closed, the trip latch 56 is in contact with a closing trigger 62 which works in conjunction with a closing plunger 61 of the closing electromagnetic 70, and the closing trigger 62 rotates. The operation is prohibited. Further, the closing trigger 62 is in contact with the closing latch 63 engaged with the second pin 67 provided in the energy storage gear 64, and the energy storage gear 64 is engaged.
The rotation operation of is prohibited. The large energy storage gear 64 is connected via the link rod 68 and the closing lever 69 via the drive shaft portion 10 using the first torsion bar 1 described in the above-described energy storage portions 50 and 60 as the closing spring 1b. .. That is, the closing spring 1b, which is a rod-shaped elastic body, is arranged in the vertical direction with respect to the paper surface of FIG. Therefore, the closing lever 69 is configured to rotate in the arrow B direction around the drive shaft portion 10 by the rotational driving force stored in the storage portions 50 and 60 having the closing spring 1b. Therefore, in the closed state of the switch 51 shown in FIG. 5, the energy storage gear 64 is urged to rotate in the arrow C direction. There is a cam 65 on this charging gear 64.
Are provided and are configured to rotate together with the energy storage gear 64. Also, in the tooth portion of this energy storage gear 64,
A tooth notch 64a is formed, and in the closed state of the switch 51 shown in FIG. 5, this tooth notch 64a faces the teeth of the energy storage small gear 66. Therefore, in the closed state of the switch 51 shown in FIG. 5, the rotation operation of the energy storage small gear 66 is performed by the energy storage large gear.
It is configured not to be transmitted to 64.

The opening / closing drive operation in the operating device of this embodiment constructed as above will be described. In the closed state of the switch 51 shown in FIG. 5, the trip electromagnet 53 is excited and the trip plunger 54 is driven to the right, so that the trip trigger 55 moves clockwise around the shaft 55a. Rotate. The rotation of the tripping trigger 55 causes the tripping latch 56 to rotate counterclockwise about the shaft 56a so that the first pin 57 formed on the drive lever 52 and the tripping latch 56 are engaged with each other. Come off. As a result, the drive lever 52, which has been urged by the breaking spring 1a, rotates in the direction of arrow A, and drives the movable contactor of the switch 51 which is interlocked with this drive lever 52 in the opening direction. FIG. 6 shows an operating state of the operating device when the switch 51 is opened. FIG. 6 is a configuration diagram showing an operating state of the operating device when the switch 51 is opened. Figure 6
In the open state of the switch 51, as shown in
The trip latch 56 is not in contact with the closing trigger 62, and the closing trigger 62 is rotatable in the clockwise direction. In the opened state shown in FIG. 6, the drive lever is
The energy accumulating portions 50 and 60 having the breaking spring 1a that rotates the 52,
The stored rotational driving force is released to have only a predetermined initial torque.

In the open state of the switch 51 shown in FIG.
When the closing electromagnet 70 is excited and the closing plunger 61 is driven to the right, the closing trigger 62 rotates clockwise around the shaft 62a, so that the closing latch 63 moves counterclockwise around the shaft 63a. Pivot, closing latch 63 and second pin 67
Disengages with. As a result, the energy storage large gear 64 provided with the second pin 67 is biased in the direction of arrow C by the closing spring 1b via the closing lever 69 and the link rod 68, so that the energy storage large gear 64 Rotates in the direction of arrow C. FIG. 7 shows a state in which the energy storage gear 64 is rotating in the direction of arrow C.
FIG. 7 is a configuration diagram showing a state in which the operating device is closing the switch 51. The rotation of the energy storage gear 64 in the direction of arrow C causes the cam 65 to come into contact with the roller follower 58 rotatably provided on the drive lever 52 to move the drive lever 52 to the arrow D.
Press to rotate in the direction. Therefore, the drive lever 52
The movable contactor of the switch 51 mechanically connected to the switch 51 is turned on, and the switch 51 is closed.

FIG. 8 shows a closed state in which the drive lever 52 rotates in the direction of arrow D and the movable contactor of the switch 51 is closed.
When the open / close state of the switch 51 shown in FIG. 6 is changed to the closed state of the switch 51 shown in FIG.
Since the first torsion bar 1 which is the breaking spring 1a connected to the drive lever 52 is rotated in the direction, the restoring force that is a rotational drive force is accumulated by the twisting force of the drive lever 52. To go. Therefore, the switch 51 shown in FIG.
In the closed state, the cutoff spring 1a is in a state in which the rotational driving force is stored. At this time, the rotational driving force of the closing spring 1b connected to the energy storage gear 64 is released with a predetermined initial torque. In addition, in the operating device of the present embodiment, the rotational driving force released by the closing spring 1b rotates the breaking spring 1a so that the rotational driving force is stored in the breaking spring 1a by the releasing action of the closing spring 1b. It is selected to be larger than the driving force.

When the switch 51 shown in FIG. 8 is in the closed state, the energy storage small gear 66 is rotated by driving a device provided outside the operating device, for example, an electric motor, so that the energy storage large gear 66 is rotated.
The closing lever 69 is rotated in the direction of arrow E by rotating 64 in the direction of arrow C. By rotating the closing lever 69 in the direction of arrow E, a restoring force serving as a rotational driving force is stored in the energy storage units 50 and 60 having the closing spring 1b, and the switch 51 shown in FIG. Is closed. Figure 8
When the closing initial state shown in FIG. 5 shifts to the closing complete state shown in FIG. 5, the line of action of the link rod 68 crosses the center point of the rotation of the energy storage gear 64 and passes therethrough. Closing lever
By rotating 69 in the direction of arrow B, the energy storage gear 64 is in a state of rotating in the direction of arrow C. Further, as shown in FIG. 5, when the closing spring 1b is energized and the second pin 67 is engaged with the closing latch 63 in the closing completed state of the switch 51, the teeth of the energizing large gear 64 are The notch 64a is the energy storage small gear 66.
Are configured to face each other. Therefore, in the closing completion state shown in FIG. 5, even if the energy storage small gear 66 is rotated by the electric motor or the like, the energy storage large gear 64 is not rotated, and the closing completion state shown in FIG. 5 is maintained. Is configured.

[0020]

As described above, according to the switch operating device of the present invention, the initial torque of the energy storing portion of the operating device is provided by providing the energy storing portion with the adjusting lever, the adjusting rod, etc. as the initial torque adjusting portion. It is possible to obtain a highly reliable and safe operating device for a switch, which can linearly and surely change to any desired value and can easily finely adjust to a desired initial torque.

[Brief description of drawings]

FIG. 1 is a perspective view showing a power storage section in a switch operating device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a connection state of main parts in the energy storage unit of FIG.

FIG. 3 is a cross-sectional view showing a connection state of main parts in the energy storage unit of FIG.

FIG. 4 is a perspective view showing a power storage section in a switch operating device according to another embodiment of the present invention.

FIG. 5 is a configuration diagram showing a closing completion state in the switch operating device of FIGS. 1 and 4;

FIG. 6 is a configuration diagram showing an open state in the switch operating device of FIGS. 1 and 4;

FIG. 7 is a configuration diagram showing a closing operation of the switch operating device of FIGS. 1 and 4;

FIG. 8 is a configuration diagram showing a closing initial state in the switch operating device of FIGS. 1 and 4;

FIG. 9 is a perspective view showing a power storage mechanism in a conventional switch operating device.

[Explanation of symbols]

 1 1st torsion bar 2 2nd torsion bar 10 Drive shaft 26 Joint 28 Adjustment lever 32 Adjustment rod 35 Adjustment nut 36 Lock nut 37 Flange 50 Accumulator

Claims (2)

[Claims] 1. A rod-shaped first elastic body having one end connected to an opening / closing operation portion of a switch, a joint portion fixed to the other end of the first elastic body, and one end fixed to the joint portion, A rod-shaped second elastic body disposed substantially parallel to the first elastic body, the other end of the second elastic body being mechanically connected, and the disposing direction of the second elastic body. The second with the central axis parallel to
A switch lever characterized by comprising: an adjusting lever part for rotating the elastic body of the device to a predetermined twist angle; an initial torque adjusting part for driving the adjusting lever part to hold the adjusting lever part in a predetermined position. Operating device. 2. A rod-shaped first elastic body whose one end is connected to an opening / closing operation portion of a switch, a joint portion fixed to the other end of the first elastic body, and one end fixed to the joint portion, A rod-shaped second elastic body disposed substantially parallel to the first elastic body, a worm wheel mechanically connected to the other end of the second elastic body, and the worm wheel meshing with the worm wheel. An opening and closing, characterized by comprising an initial torque adjusting portion for rotating the second elastic body by a worm about a central axis parallel to the disposing direction of the second elastic body to a predetermined twist angle. Operating device.