JPH0997541A - Operating device for apparatus having three positions - Google Patents

Abstract

PROBLEM TO BE SOLVED: To offer a mechanical stopper function even in the operation to the intermediate position by furnishing the first and the second operating shafts, a handle, a lever fixed to the shaft, and a stopper to restrict the motion angle, of the first operating shaft on a link coupled. SOLUTION: When the first operating shaft 4 working also as an output shaft is in the In position, a stop pin furnished on a major link 9 interferes with a minor link 10 while a gear 8 of second lever interferes with a stopper of a stationary frame so that the shaft 4 is hindered from further rotating clockwise. If at this time the second operating shaft 3 is rotated clockwise by the handle, the stopper pin of the first lever 11 interferes with the minor link 10 and also the gear 8 interferes with the stopper so that the shaft 4 is hindered from rotating counteclockwise, and Off position is generated. If further the shaft 4 is rotated counterclockwise by the handle, the stop pin of the link 9 interferes with the link 10 while the flank of the lever 11 does with a tumbled angle-shaped part of the link 9, and the stop in the grounding position is generated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation device such as a disconnector having three positions of ON / OFF / GROUND among devices for opening / closing an electric circuit.

[0002]

2. Description of the Related Art A conventional operating device for a device such as a disconnector having three positions has one operating shaft having one end connected to the device such as a disconnector and the other end operated by an operating handle. It is designed to operate the equipment by converting the operating force of the rotating force of the gears into gears.

[0003]

In such a conventional device, the mechanical position at the cut position, which is an intermediate position when the switch is turned on or off when operating between the three positions, or when operating from the ground to the off position. Since a simple stopper function is not provided, it is not possible to obtain a feeling of operation at the off position, and it may be difficult to determine the end of operation, which may lead to erroneous operation.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an operating device which can obtain a mechanical stopper function even when operated to a cut position which is an intermediate position.

[0005]

In order to achieve the above-mentioned object, the present invention is an operating device which is operated by connecting to a target device such as a disconnector having three positions of ON-OFF-GROUND. , A first operation shaft that doubles as an output shaft connected to the device,
A second operation axis for controlling the operating angle of the first operation axis,
A handle for operating the first and second operation shafts, a first lever fixed to the first operation shaft, a second lever fixed to the second operation shaft, and a first and second Two links, large and small, that connect between the levers, and stoppers that limit the operating angles of the first operating shaft to the predetermined angles are provided on the first and second levers and links.

A protrusion is provided on the outer diameter of the handle which is operated by being connected to the first or second operation shaft, and a slit corresponding to the protrusion is provided at the handle insertion port so that the handle can be removed only at the end point of each operation. In addition, the outer diameter of the second operating shaft is made larger than the inner diameter of the handle for the first operating shaft, and the inner diameter of the handle insertion port for the first operating shaft is larger than the outer diameter of the handle for the second operating shaft. Make it smaller.

Further, inside the insertion opening of the handle for the first and second operation shafts, there is provided a shutter made of a rectangular single plate having an oval slit in the center, and the shutter is provided with the first or second shutter. Two sets of interlock coils that prevent the operation of the shutter are provided in the directions in which the handle insertion openings of the operation shaft are opened. According to the configuration of the present invention,
By the rotation of the first operating shaft, the grounded position and the cut position are obtained on the first operating shaft. At the grounding position, the first lever and the large link interfere with each other, and at the off position, the first lever and the small link interfere with each other, and the first operating shaft does not rotate any further.

When the second operation shaft is rotated, the cutting position and the insertion position are obtained by the first operation shaft. The rotation of the second lever rotates the first lever via the large link and the small link. The first lever and the small link interfere with each other in the off position, and the large link and the small link interfere with each other in the on position so that the second operation shaft cannot rotate any more. That is, the first operation shaft receives the grounding-cutting operation, and the second operation shaft receives the on-off operation, so that a reliable stopper can be obtained at the cutting position which is the intermediate position of the three positions.

The handles for the first and second operating shafts have different fitting sizes, and a shutter that opens when the conditions are adjusted is provided inside the handle insertion port to prevent erroneous operation due to misuse of the handle. To be done.

[0010]

1 is a plan view of an operating device according to the present invention, and FIG. 2 is a side view thereof. In FIGS. 1 and 2, an intermediate shaft 5 for transmitting the rotational force of the first operating shaft 4, the second operating shaft 3 and the motor 6 is provided rotatably by bearings fixed to the frame 1 and the frame 2. The device to be operated is connected to one end 4A of the first operation shaft 4.

In this embodiment, the operating force when operating the second operating shaft 3 is transmitted from the gear 7 to the gear 8. The intermediate shaft 5 and the first operating shaft 4 are connected by a gear 8, a large link 9, a small link 10 and a first lever 11 so that a turning force can be transmitted. Although the intermediate shaft 5 is rotated by the second operating shaft 3 in this embodiment, the intermediate shaft 5 can be directly used as the second operating shaft.

3, FIG. 4, and FIG.
It is operation | movement explanatory drawing of each position. Figure 3 shows the entry position, Figure 4
Shows a cut-off position, FIG. 5 shows a grounding position, and FIG. 4 shows the same state (cut-off position) as FIG. However, in FIGS. 3, 4, and 5, the intermediate shaft 5 in FIG. 1 is replaced with the second operation shaft 3, and the gear 8 is replaced with the second lever 8A. In the entry position of FIG. 3, the first operating shaft 4 is in the entry position, the stop pin 9A provided on the large link 9 interferes with the small link 10, and the second lever 8A is a stopper provided on the fixed frame. The first operation shaft 4 does not rotate clockwise any more due to interference with 8C.

To move from the on position to the off position, the second operating shaft 3 is rotated clockwise from the state of FIG. 3 to the off state of FIG. In this state, the stop pin 11A provided on the first lever 11 and the small link 10 interfere with each other, and the second lever 8A interferes with the stopper 8B provided on the fixed frame so that the first operation shaft 4 moves. Do not rotate counterclockwise above.

In the operation from the off position to the grounding position, the first operating shaft 4 is rotated counterclockwise from FIG. 4 to the state shown in FIG. In this state, the stop pin 9A provided on the large link 9, the small link 10 and the flank of the first lever 11 interfere with the dogleg portion of the large link, and the first operating shaft 4 moves further in the counterclockwise direction. Does not rotate. To move from the grounded position to the cut position, the first operating shaft 4 is rotated clockwise to bring it into the state shown in FIG. In this state, the stop pin 11A provided on the first lever 11 and the small link 10 interfere with each other, and the second lever 8A interferes with the stopper 8B provided on the fixed frame so that the first operation shaft 4 moves. Do not rotate clockwise any more.

FIG. 6 is a structural diagram of the operation shaft end, and FIG.
It is the top view seen from -B. 6 and 7,
The first operation shaft 4 and the second operation shaft 3 can be operated by inserting operation handles through the handle insertion ports 13 and 14 for the respective operation shafts. The shutter 15 is formed of a single plate so as to slide close to the inside of the cover 19, and a handle 16 formed by bending a part of the shutter 15 is moved to open each insertion port 13 or 14.

The interlock coils 17 and 18 are covers 1
It is attached to the 9 side to prevent the opening operation of the shutter (the shutter opens only when the conditions are satisfied). When the second operation shaft 3 is operable in this configuration, the interlock coil 18 is excited, the armature 18A is drawn in, the shutter 15 is opened, and the handle insertion opening 13 can be opened. A slit 20 is provided at the center of the shutter 15 so that the interlock coil 17 does not interfere with this operation.

FIG. 8 is a structural view showing the connecting portion between the operating shaft and the operating handle, and FIG. 9 is a plan view of FIG. 8 viewed from CC. In FIGS. 8 and 9, a protrusion 23 is provided on the outer diameter near the fitting portion of the handle 21 that is connected to the operating shaft and is operated, and the handle can be pulled out only at the end point of each operation. The slit 24 is provided so that the handle can be operated reliably. FIG.
FIG. 11 is a structural diagram showing a connecting portion between the operating shaft and the operating handle. 10 and 11, the outer diameter E of the second operating shaft 3 is made larger than the inner diameter D of the handle 21B for the first operating shaft 4, and the outer diameter F of the handle 21A for the second operating shaft 3 is larger. The inner diameter G of the handle insertion opening for the first operation shaft 4 is made smaller than that of the first operation shaft 4 to prevent the misuse of the handle used for each operation shaft.

[0018]

According to the present invention, it is possible to obtain an operating device having a reliable mechanical stopper function in the operation to the cut position which is the intermediate position between the entry position and the ground contact position. In addition, it is possible to prevent misuse of the handle used for each operation axis.

[Brief description of drawings]

FIG. 1 is a plan view of an operating device according to the present invention.

FIG. 2 is a side view of an operating device according to the present invention.

FIG. 3 is an operation explanatory view (entrance position) of the operation device according to the present invention.

FIG. 4 is a diagram for explaining the operation of the operating device according to the present invention (off position).

FIG. 5 is an operation explanatory view (grounding position) of the operating device according to the present invention.

FIG. 6 is a structural diagram of an operating shaft end of an operating device according to the present invention.

FIG. 7 is a plan view of FIG. 6 viewed from BB.

FIG. 8 is a structural diagram showing a connecting portion between an operating shaft and an operating handle of an operating device according to the present invention.

FIG. 9 is a plan view of FIG. 8 viewed from CC.

FIG. 10 is a structural diagram showing a connecting portion between an operating shaft and an operating handle of an operating device according to the present invention.

FIG. 11 is a structural diagram showing a connecting portion between an operating shaft and an operating handle of an operating device according to the present invention.

[Explanation of symbols]

 1 frame 2 frame 3 second operation shaft 4 first operation shaft 5 intermediate shaft 7 gear 8 gear 8A second lever 8B stopper 8C stopper 9 large link 9A stop pin 10 small link 11 first lever 11A stop pin 13 Insertion port 14 Insertion port 15 Shutter 16 Handle 17 Interlock coil 18 Interlock coil 19 Cover 20 Slit 21 Handle 21A Second operation shaft handle 21B First operation shaft handle 22 Handle insertion port 23 Protrusion 24 Slit

Claims (5)

[Claims] 1. A disconnector or the like having three positions of ON-OFF-GROUND,
An operating device connected to a target device for operation, a first operating shaft also serving as an output shaft connected to the device, and a second operating shaft controlling an operating angle of the first operating shaft. A handle for operating the first and second operation shafts, a first lever fixed to the first operation shaft, a second lever fixed to the second operation shaft, and a first and second Two large and small links that connect between the levers, and stoppers that limit the operating angle of the first operating shaft to a predetermined angle on the first and second levers and links, respectively. And 3
An actuator for a device that has a position. 2. The handle according to claim 1, wherein the handle to be operated by being connected to the first or second operating shaft is provided with a protrusion on the outer diameter on the handle side, and is pulled out only at the end point of each operation at the handle insertion port. As described above, an operating device for a device having three positions, which is provided with a slit corresponding to this protrusion. 3. The outer diameter of the second operating shaft is larger than the inner diameter of the handle for the first operating shaft, and the outer diameter of the handle for the second operating shaft is larger than the outer diameter of the handle for the second operating shaft. An operating device for a device having three positions, characterized in that the inner diameter of the handle insertion port for one operating shaft is made small. 4. The shutter according to claim 1, wherein the shutter is made of a rectangular single plate having an oval slit in the center inside the insertion opening of the handle for the first and second operation shafts. An operating device for a device having three positions, which is characterized by that. 5. The shutter according to claim 4, wherein the shutter is provided with two sets of interlock coils that prevent the operation of the shutter in a direction in which the handle insertion openings of the first and second operation shafts are opened. An operating device for equipment with three positions.