JPH07130251A - Operating device for switch - Google Patents

Abstract

PURPOSE:To provide a device by providing a constitution operable by a single shaft of serving as both a main shaft and operating shaft, so that miniaturization can be attained with a simple structure to facilitate manufacture. CONSTITUTION:Opening/closing operation is selected with the first terminal, and when an 'on' push button switch is pressed from a condition (A) after 'off' action, an operation electric motor 29 lowers down a screw shaft 32 to energize an operating spring 35. An operating pin 41 is pressed down by an upper end of an oblong hole 45, to unhook an off-position holding hook 39, and an operating lever 33 is turned with a main shaft 9, to hit a stopper 47, and held to an in-position by an in-position holding hook 40. From this condition (B), when an 'off' push button is pressed, the electric motor 29 lifts the screw shaft 32 to energize the spring 35, and an operating pin 42 is pulled up by a lower end of an oblong hole 46, to unhook a hook 40 and to turn the lever 33 stopped by hitting a switching lever 36 and held to an off-position by the off-position holding hook 39. In the case of selecting opening/closing operation with the third terminal, the lever 36 is turned, and a pin 34 is engaged with an off-position holding hook 48 to similarly perform on/off operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operating mechanism of a switch, and particularly, it has a function of a disconnecting switch and a function of a grounding position, and is turned on (closed)
The present invention relates to a spring-type operating mechanism for a three-position switch that operates three position states of cutting (opening) and grounding with a single operating device.

[0002]

2. Description of the Related Art A disconnector with a grounding device is constructed to have both a disconnector and a grounding device, and one operation is performed in three position states: on (closed), off (open) and grounded. As a so-called three-position switch spring type operation mechanism (hereinafter simply referred to as an operation mechanism) performed by the operation device, there is an operation mechanism illustrated in FIGS. 7 to 9. This operating mechanism is mounted on the disconnector 1 with a grounding device as shown in FIG.

The disconnector 1 with a grounding device has an operating mechanism 3 installed below a disconnector body 2.

The disconnector body 2 has a first terminal 4 and a second terminal 6
And a third terminal 5, the first terminal 4 and the ground terminal (third terminal) 5 are arranged at predetermined internal positions, and the second terminal 6 is movable to switch between the first terminal 4 and the third terminal 5. It is connected to terminal 7.

The movable terminal 7 is moved by the link mechanism 8 interlocking with the operation mechanism 3 to the cut position indicated by the solid line in the figure and
The switching operation is performed between the grounding position connected to the grounding terminal 5 shown by the dotted chain line and the entry position shown by the three-dotted chain line.

This switching operation is performed by the operating mechanism 3 which operates quickly by utilizing the energy stored in the spring in order to minimize damage caused by arcing.

The operating mechanism 3 is constructed as shown in FIG. The operating mechanism 3 has a main shaft 9, a first operating shaft 10, and a second operating shaft 11.

The first operating shaft 10 and the second operating shaft 11 include
The spring levers 12 and 13 are fitted to each other, and the spring member 14 formed of a compression coil spring is mounted between the two spring levers 12 and 13. That is, one end of the spring member 14 is pivotally attached to the free end of the one spring lever 12, and the other end of the spring member 14 is pivotally attached to the free end of the other spring lever 13.

A main lever 15 formed in a hook shape is pivotally attached to the main shaft 9. A pin 16 is projectingly provided on the free end of one projecting piece 15a of the main lever 15.

Further, the root end of the first elongated hole link 18 is pivotally attached to the free end portion of the first link lever 17 fitted on the first operating shaft 10, and the tip end portion of the first elongated hole link 18 is attached. The pin 16 is movably inserted into the long hole 19 provided. Along with this, the root end of the second elongated hole link 21 is pivotally attached to the free end of the second link lever 20 fitted to the second operation shaft 11,
The pin 16 is inserted into the slot 24 provided at the tip of the slot link 21.
The main lever 15 is interlocked by movably inserting.

One end of the link mechanism 8 of the disconnector is pivotally attached to the free end of the other projecting piece 15b of the main lever 15 for interlocking. Incidentally, 23, 26, 27 and 28 are stoppers.

Next, the operation of the above-mentioned conventional apparatus will be described.

In this device, the first operating shaft 10 is rotated counterclockwise to switch from the off state to the grounded state, and the second operating shaft 11 is rotated counterclockwise. The design is based on the direction of movement so that the state changes from the off state to the on state.

First, in order to shift from the OFF state shown in FIG. 7 to the ON state shown in FIG. 8, the second operating shaft 11 is rotated counterclockwise by a manual operating device or an electric operating device (not shown). According to this operation, the spring lever 13 rotates counterclockwise to store the spring member 14, and
The second elongated hole link 21 pivotally attached to the link lever 20 moves leftward in the drawing, but the pin 16 can move in the elongated hole 24, so that the main lever 15 is stationary. Further, the spring lever 13 is rotated to move to a dead point 2 on the mechanism.
When it exceeds 2, the spring lever 13 vigorously rotates due to the release of the stored energy, and the spring lever 13 contacts the stopper 23 and stops. On the other hand, the end of the elongated hole 24 comes into contact with the pin 16 and swivels the main lever 15 clockwise to reach the insertion position. In connection with this operation, the disconnector also shifts from the off state to the on state.

The operation of shifting from the ON state to the OFF state is the reverse of the above.

Next, description will be given of the case of shifting from the off state shown in FIG. 7 to the grounded state shown in FIG. In this case,
The first operating shaft 10 is rotated counterclockwise by a manual operating device or the like (not shown). Then, the spring lever 12 rotates counterclockwise to store the spring member 14, and
The first elongated hole link 18 pivotally attached to the first link lever 17 moves to the right in the figure, but the pin 16 can move in the elongated hole 19, so that the main lever 15 is stationary. Further, the spring lever 12 rotates, and the spring lever 1
2 hits the stopper 26 and stops. On the other hand, the end of the elongated hole 19 comes into contact with the pin 16 and swivels the main lever 15 counterclockwise to reach the grounding position. The disconnecting switch associated with this operation also shifts from the off state to the grounded state.

The operation of shifting from the grounded state to the off state is the reverse of the above.

[0018]

In the conventional switch operating mechanism as described above, the angles formed by the elongated holes 19 and 24 of the two first elongated hole links 18 and the second elongated hole links 21 are reduced. , The frictional force between the first elongated hole link 18 and the second elongated hole link 21 during the operation of the mechanism becomes smaller as the mechanism is closer to parallel, and a smooth operation can be obtained.
The elongated hole link 18 and the second elongated hole link 21 are arranged such that the angles formed by the elongated holes are close to parallel.

Therefore, the angle formed by the line segment connecting the main shaft 9 and the first operating shaft 10 and the line segment connecting the first operating shaft 10 and the second operating shaft 11 becomes an acute angle, and the main shaft 9 and the second operating shaft 11 The distance between the operating shaft 11 and the operating shaft 11 becomes significantly longer than the distance between the main shaft 9 and the first operating shaft 10. Therefore, the second long hole link 2
Since the total length of 1 is long, there is a lot of wasted space and the volume is wide as a whole structure, there is a problem that the production cost is also high.

Further, the second elongated hole link 21 has the spring member 1
Since the first operation shaft 10 and the second operation shaft 11 respectively intersect with the shaft of No. 4, the spring lever and the first link lever, or the spring lever and the second link lever have a total of 4 in total.
There was a problem that two levers were needed and the number of members increased. Also, in the mechanism as a whole, the operating angle of each lever and link was slanted, and there were few parts that operated vertically or in parallel. It is difficult to determine the angle,
Further, there is a problem that it is difficult to adjust the stroke of the long hole link or the like at the time of assembly.

Further, there are problems that two operating shafts are required in addition to the main shaft, the structure becomes large and many parts are required.

In view of the above points, the present invention is capable of operating with one shaft that also serves as a main shaft and an operating shaft, has a simple structure and can be miniaturized, has a simple operation, and is easy to manufacture and inexpensive. The purpose is to newly provide an operating mechanism for a switch.

[0023]

Means for solving the above-mentioned problems in the present invention is to arrange a first terminal and a third terminal, and to insert (close) these first terminal and third terminal respectively. A switch operating device having a second terminal connected to a movable terminal to be cut (opened), the movable terminal being driven by a main shaft of an operating mechanism via a link device, the screw shaft being manually operated or manually operated. The drive operation means for moving up and down, and the release of the operation spring for elastically mounting the main shaft between the tip end of the rotating operation lever and the end of the screw shaft to perform compression and tension storage by the vertical movement of the screw shaft. A rotating operation means for rotating the main shaft by a force and an on / off position holding hook for opening / closing each of the first terminal side and the third terminal side are arranged substantially symmetrically on the left and right sides of the tip of the operation lever. Entry position holding hook or cutting position holding hook Position holding means for holding the operation lever on either side to store the operation spring, and holding it by the other holding hook after the release, and an opening / closing operation for each opening / closing operation on the first terminal side and the third terminal side. , And the long hole links for operating the cut position holding hooks are arranged substantially symmetrically, and one end of each long hole link is pivotally attached to the support pin at the lower end of the screw shaft, and each of the long hole links is held in the long hole at the other end. Holding pin operating means for movably inserting the operating pin of the hook, tripping the compression-energy-inset-position-holding-hook of the operating spring, and tripping the tension-spring-after-cutoff-position-holding hook of the operating spring; The main shaft is rotatable about the main shaft, and an opening / closing means including an auxiliary switch that operates at positions corresponding to respective ON (closed) and OFF (open) positions of the first and third terminals of the switch. Is installed on the A switching lever in which a display pin is implanted and a switching handle pin insertion hole is provided, a knob supported at a link frame and movable in the axial direction of the main shaft, a knob at a front end, and a stop pin having a large-diameter portion in part, Operates the limit switch for switching detection and two recesses provided on the periphery of the switching lever that lock the position of the switching lever by engaging the large diameter part of the stop pin and disengage the engagement when the stop pin is moved. And a selection unit that restricts the rotation range of the operation lever and selects the opening / closing operation on the first terminal side or the third terminal side.

Further, the position of the operation lever, that is, the open / closed state of the switch is indicated by the window hole of the display plate and the cover provided at the front end of the main shaft, and the selection result by the selecting means is indicated by the switching display pin and the display window of the cover. And a display means for remotely displaying the selection result by means of a changeover detection limit switch.

[0025]

The switching lever selects whether the opening / closing operation is performed with the first terminal or the opening / closing operation is performed with the third terminal. When the former is selected, the switching lever is held at the switching position by the holding pin and the screw shaft is moved downward to store the operation spring. When the operation spring is compressed and stored, one end of the long hole of the long hole link pushes down the operation pin to release the cut position holding hook, and when the hook is removed, the operation spring is released, and the operation lever is released. The main shaft is rotated to the insertion position of the first terminal. Next, the screw shaft is moved upward to store the operation spring. When the operation spring is tension-stored, one end of the long hole of the long-hole link pulls up the operation pin to remove the insertion position holding hook, and when the hook is removed, the operation spring is released and the main shaft is released via the operation lever. Is rotated to the cut position of the first terminal. When operated by the operation electric motor, the operation electric motor is stopped by the opening / closing means such as an auxiliary switch when the operation spring is stored to complete the on / off operation. When the latter is selected, the third step is performed in the same manner.
It can be opened and closed with the terminal. Also, the first
Distinguishing whether the opening / closing operation with the terminal is selected or the opening / closing operation with the third terminal is selected, and the current state of either ON (closed) or OFF (open) Is displayed by the display means.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings.

FIG. 1 is an explanatory view showing an embodiment of the present invention.
In FIG. 1 (A), 29 is an operating electric motor having a small bevel gear 30 fixed to the output shaft, 31 is a bevel gear with a female screw that is driven by the small bevel gear 30, and moves a screw shaft 32 up and down. To form. Reference numeral 9 is a main shaft, 33 is an operation lever fixed to the main shaft 9, 34 is a pin projecting from a free end portion of the lever 33, 35 is an operation spring, one end of which is pivotally attached to the pin 34 and the other end thereof is It is pivotally attached to the support pin 63 at the lower end of the screw shaft 32, and forms the turning operation means of the main shaft 9. 36 is a switching lever for selecting whether to perform opening / closing operation with the first terminal or opening / closing operation with the third terminal, 37 is a stop pin, and 38 is a stop pin return spring. , These form the switching selection means. Reference numeral 39 is a first terminal side cut position holding hook, 40 is the same position holding hook, 48 is a third terminal side cut position holding hook, and 49 is the same position holding hook. These position holding hooks are on the free end side. The operation pins 41, 42 and 50, 51 for removing the hooks are planted in the operating lever 33.
Forming the position holding means. 43 and 44 are long holes 45 and 4 into which the device pins 41 and 42 are movably inserted at the tips thereof.
6, and the root end is a support pin 6 at the lower end of the screw shaft 32.
The long hole links 52, 53 pivotally mounted on the first terminal 3 have the long holes 54, 55 into which the operation pins 50, 51 are movably inserted, and the root ends of the screw shaft 32. Support pin 63
The long hole link on the side of the third terminal that is pivotally connected to each other forms holding hook operating means for operating the position holding hooks. 47 and 56 are the first and the third of the operating lever 33.
The stopper on the terminal side is shown. The position holding means and the holding hook operating means on the first terminal side and the third terminal side are substantially symmetrical in shape. Reference numeral 58 denotes a switch operating lever fixed to the main shaft 9 for operating the auxiliary switch 61 via a link 59 and a lever 60. The auxiliary switch 61 forms an opening / closing means for operating the main shaft 9 at the positions corresponding to the respective ON (closed) and OFF (open) positions of the first terminal and the third terminal.

Next, the operation of the apparatus of this example constructed as described above will be described with reference to FIG.

FIG. 1 is a view showing a state in which an opening / closing operation with the first terminal is selected. For example, in FIG.
When the push button switch is pressed, the operation electric motor 29 lowers the screw shaft 32 and stores the operation spring 35. When the operation spring 35 is compressed and stored, the upper end of the long hole 45 pushes down the operation pin 41, the cut position holding hook 39 is disengaged, and the operation lever 33 moves.
At the same time, it is rotated clockwise by the urging force of the operation spring 35, stops at the insertion position with the first terminal by hitting the stopper 47, and is retained at the insertion position by the insertion position holding hook 40 as shown in FIG. The auxiliary switch 61 operates and the operating motor 29 stops.

In FIG. 1B, for example, when the "OFF" push button switch is pressed, the operating motor 29 raises the screw shaft 32 and stores the operating spring 35. When the operation spring 35 is tension-accumulated, the lower end of the long hole 46 pulls up the operation pin 42, the insertion position holding hook 40 is removed, and the operation lever 33 rotates counterclockwise together with the main shaft 9 by the urging force of the operation spring 35. It moves and stops at the switching position by hitting the switching lever 36,
As shown in (A), the cut position holding hook 39 holds the cut position, and the auxiliary switch 61 operates to stop the operating motor 29.

When the opening / closing operation with the third terminal is selected, the switching lever 36 is rotated counterclockwise to move the pin 34.
Is engaged with the cut position holding hook 48. Switching lever 36
It is held by the stop pin 37 which is pressed against the selected position by the stop pin return spring 38.

The on / off of the third terminal is performed in the same manner as the on / off of the first terminal. That is, in FIG. 1 (A), for example,
When the "ON" push button switch is pressed, the operating motor 29 turns the screw shaft 3
2 is lowered, and when the operation spring 35 is compressed and stored, the long hole 54
The upper end of the pin pushes down the pin 50, the cut position holding hook 48 is removed, and the operation lever 33 is rotated in the counterclockwise direction.
At the insertion position with the terminal, it stops by hitting the stopper 56, and is held at the insertion position by the insertion position holding hook 49.
1 operates and the operating motor 29 stops.

In FIG. 1B, for example, when the "OFF" push button switch is pressed, the operation motor 29 raises the screw shaft 32, and when the operation spring 35 is charged, the lower end of the elongated hole 55 moves the operation pin 51. The pull-up, the insertion position holding hook 49 is removed, the operation lever 33 is rotated clockwise, hits the switching lever 36 at the cut position and stops, and is held at the cut position by the cut position holding hook 48, and the auxiliary switch 61 is opened. It operates and the operating electric motor 29 stops.

In the above description of the operation, if the connecting lever 57 shown by the alternate long and two short dashes line is fixed to the main shaft 9 in FIG. 1 and the third terminal is replaced with the ground terminal in succession to the link mechanism 8 in FIG. The operation of the disconnecting switch with a grounding device shown in FIG. 7 will be explained.

2 to 6 show more specifically the peripheral portion of the main shaft in one embodiment of the present invention.
2 shows a state in which an opening / closing operation with the third terminal is selected, FIG. 2 is a side sectional view, FIG. 3 is a lateral sectional view, FIG. 4 is a front view of FIG.
5 is a sectional view taken along the line AA in FIG. 2, and FIG. 6 is a sectional view taken along the line BB in FIG.

The parts having the same functions as in FIG.
The same reference numerals are given to facilitate understanding.

2 and 3, the main shaft 9 is pivotally supported between the link frames 64 and 65 which are provided so as to face each other, and the operating spring 35 and the spring receiving member 66 fixed to the main shaft 9 and FIG.
Is mounted between the support pins 63 at the lower end of the screw shaft 32. The spring receiving member 66 has the same function as when one end of the operation spring 35 is pivotally attached to the pin 34 of the operation lever 33. An operation lever 33 is fixed to the front side of the main shaft 9, and a switching lever 36 is rotatably attached. Operating lever 3
Roller followers 34a and 34b are fitted to the pin 34 that is planted on the free end side of 3. Roller follower 34
a is engaged with the cut position holding hooks 39 and 48 and the entry position holding hooks 40 and 49 in FIG. 1, and is a roller follower 34b.
Engages the switching lever 36.

The front end of the main shaft 9 has a substantially T-shape (arcuate shape).
Shaped display plate 67 is attached to the display plate 67,
The characters such as off and ground are written. A coupling lever 57 is fixed to the back side of the main shaft 9 via a collar 68.
The connecting lever 57 is a bifurcated structure as shown in FIG. 6 in which the connecting lever 57 shown in FIG. 1 and the switch operating lever 58 are integrated, and the arm 57 a is connected via the link mechanism 8 as shown in FIG.
The arm 57b is connected to the auxiliary switch 61 via a link 59 and a lever 60.

Reference numeral 37 denotes a link frame 6 below the main shaft 9.
A stop pin slidably penetrating 4, 4 and 65 has a knob 37a at the front end and a large diameter portion 37b at a part of which engages the switching lever 36. There is.

The switching lever 36 is, as shown in FIG. 5, a roller follower 34 fitted to a pin 34 of the operating lever 33.
Stoppers 36a and 36b are provided to prevent rotation of the operation lever 33 by engaging with b, and first and second recesses 36c and 36d into which the large-diameter portion 37b of the stop pin 37 is fitted at the outer peripheral edge. Also, the arc portion 36e and the operation portions 36f and 36g for the switching detection limit switch 62 are formed. 36h and 36i are holes for inserting a switching handle together with a hole 9a (FIG. 3) formed at the shaft end of the main shaft 9,
In the case of FIG. 5, the display pin 69 shown in FIG.
Has been planted, and red paint or the like has been applied to the tip.

It should be noted that the limit switch 62 can be easily arranged on the right side of the main shaft 9 and the auxiliary switch 61 can be arranged on the left side thereof, or the display pin 69 can be easily installed in the hole 36h.

Reference numeral 70 denotes a switching handle, as shown in FIG.
Pins 70a and 70b inserted into the hole 9a of the main shaft 9 and the hole 36h of the switching lever 36 are planted, and an interlocking disc 70c is fixed to the pin 70b.

Reference numeral 71 denotes a cover, as shown in FIG.
a is provided to indicate whether it is in the ON (first terminal), OFF, or ground (third terminal) state by the letters on the display plate 67. 71b and 71c are the first
A display window indicating whether the opening / closing operation with the terminal (ON) or the opening / closing operation with the third terminal (ground) is selected. In the figure, the display pin 71 is displayed on the display pin 71b. The red tip portion of is positioned to indicate that the opening / closing operation with the third terminal (ground) is selected. 72 is a link attachment frame.

When the "ON" operation is performed in the above state, the third terminal is closed and the word "ground" appears in the window hole 71a. When the "off" operation is performed, the third terminal is opened and the window hole 71
The character “off” appears in a.

Next, the switching operation for selecting the opening / closing operation with the first terminal will be described.

The pins 70a and 70b of the switching handle 70 are inserted into the hole 9a of the main shaft 9 and the hole 36h of the switching lever 36 through the window holes 71d and 71e of the cover 71 in FIG.
Pull the knob 37a toward you, and turn the switching handle 70 clockwise in FIG. When the knob 37a is pulled out to the front, the first recess 36c of the switching lever 36 and the large diameter portion 37b of the stop pin 37 are disengaged, and the switching lever 36 can be rotated. When the circular arc portion 36e passes through the large diameter portion 37b shown in FIG. 5 and the second concave portion 36d comes, the red tip end portion of the display pin 69 reaches the display window 71c to indicate that it has been switched to the first terminal side. At the same time, the stop pin 37 is retracted by the return spring 38, and the large diameter portion 37b and the second concave portion 36d are
Engage with each other to hold the switching lever 36 at the opening / closing operation position between the switching lever 36 and the first terminal.

Due to the shapes of the interlocking disc 70c fixed to the pin 70b and the window hole 71e of the cover 71, the switching handle 70 can be inserted and removed only at the switching completion position of the switching lever 36, and the operation lever 33 can be freely moved. The roller follower 34b provided on the end side is not held between the stopper portion 36a or 36b provided on the switching lever 36 and the cut position holding hook 39 or 48 in FIG. .

When the switching detection limit switch 62 is operating in contact with the limit switch operating portion 36f, it is displayed that the opening / closing operation with the third terminal is selected.
When returning from the contact, it indicates that the opening / closing operation with the first terminal is selected.

When the above switching operation is completed, the red selection portion of the display pin 69 is positioned in the window hole 71c of the cover 71, and the first
Display that the open / close operation with the terminal is selected,
Further, the limit switch 62 remotely displays on the operation switchboard or the like that the opening / closing operation with the first terminal is selected. When the "ON" operation is performed, the first terminal is bound and the word "ON" appears in the window hole 71a. Next, when the "cut" operation is performed, the first terminal is opened and the character "cut" appears in the window hole 71a.

[0050]

The operating mechanism of the switch according to the present invention having the above-described structure is different from the conventional operating mechanism that requires the first and second operating shafts in addition to the main shaft, and has only the main shaft. It is extremely simple, and a lever or link for connecting the main shaft and the first and second operation shafts is not required, and the number of parts and the volume of the mounting space are reduced, and the size can be reduced. Also, all design and manufacturing problems due to the large number of levers and links are eliminated.

Also in the case of electric operation, conventionally, an operating electric motor is provided on each of the first and second operating shafts to store the spring member in each of the forward and reverse directions and release the spring member during the rotation. , A special shaft joint that transmits torque during power storage and slips during power release is required, but in the case of the present invention, only the motor for energy storage of the operating spring is sufficient, and a special shaft joint is not required, so downsizing is possible. The cost can be reduced as well.

Whether the opening / closing operation with the first terminal or the opening / closing operation with the third terminal is performed can be easily performed by rotating the switching lever. The turning operation is performed by removing the ON / OFF position holding hooks symmetrically arranged around the line connecting the switching lever and the main shaft. Therefore, the ON / OFF operation with the first terminal is also ON / OFF with the third terminal. The operation and the operation are exactly the same, and since the structure is simple, there is little possibility of causing a failure.

Since the on / off position holding hook is disengaged by a long-hole link interlocking with a screw shaft for accumulating the operating spring, no special dismounting device is required, the number of parts is reduced, and the structure is simple. Has been converted.

The switching lever can be easily rotated by inserting the switching handle, pulling one of the ends of the stop pin toward the front, and turning the switching handle.
Further, since the switching lever also serves as the cut position stoppers on the first terminal side and the third terminal side, these stopper mechanisms are not necessary.

At the switching position of the switching lever, since the large diameter portion of the stop pin is fitted and held in the concave portion of the switching lever, contact stress can be reduced and wear of the portion can be prevented.

Whether the opening / closing operation with the first terminal is selected or the opening / closing operation with the third terminal is selected is distinguished by a display pin implanted in the switching lever. In addition to being displayed in the display window of, the remote display is performed by the operation of the limit switch, and it is possible to easily know which is selected.

Further, the switch is opened and closed with the first terminal (off,
Whether the switch is on or off and the third terminal is opened or closed (off or grounded) is easily displayed on the display window of the cover by the display plate provided at the shaft end of the main shaft.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of an embodiment of the present invention. (A) is a state diagram after the operation lever is turned off. FIG. 6B is a state diagram after the operation lever is inserted.

FIG. 2 is a side sectional view showing a specific configuration around a main shaft in the above.

FIG. 3 is a transverse sectional view of the above.

FIG. 4 is a front view of the above.

5 is a sectional view taken along the line AA of FIG.

FIG. 6 is a view taken along the line BB of FIG.

FIG. 7 is a block diagram of a disconnecting switch with a grounding device equipped with a conventional operating mechanism.

FIG. 8 is an explanatory diagram of a conventional operating mechanism.

FIG. 9 is an explanatory view of a conventional operating mechanism.

[Explanation of symbols]

 4 ... 1st terminal 5 ... 3rd terminal 6 ... 2nd terminal 7 ... Movable terminal 8 ... Link device 9 ... Main shaft 29 ... Operation electric motor 32 ... Screw shaft 33 ... Operation lever 34 ... Pin 35 ... Operation spring 36 ... Switching lever 37 ... Stop pin 39, 48 ... Cut position holding hook 40, 49 ... In position holding hook 41, 42, 50, 51 ... Operation pin 43, 44, 52, 53 ... Long hole link 45, 46, 54, 55 ... Long hole 57 ... Connection lever 61 ... Auxiliary switch 62 ... Limit switch 63 ... Support pin 64, 65 ... Link frame 67 ... Display board 69 ... Switching display pin 71 ... Cover

Claims (2)

[Claims] 1. A first terminal and a third terminal are arranged, and a second terminal connected to a movable terminal for inserting (closing) and cutting (opening) the first terminal and the third terminal, respectively, In a switch operating device in which the movable terminal is driven by a main shaft of an operating mechanism via a link device, drive operating means for vertically moving a screw shaft by an operating electric motor or manual operation and an operation lever for rotating the main shaft are provided. Rotating operation means that is mounted between the tip portion and the end portion of the screw shaft to rotate the main shaft by releasing the operation spring that performs compression energy storage and tension energy storage by vertical movement of the screw shaft, and a first terminal. Side and third terminal side opening / closing position holding hooks for opening / closing operations are arranged substantially symmetrically on the left and right sides of the distal end portion of the operation lever, and either the input position holding hook or the cutting position holding hook is provided. Hold the operating lever to store the operating spring, Position holding means for holding by the other holding hook after being pushed, and elongated hole links for operating the ON / OFF position holding hooks for opening / closing operations on the first terminal side and the third terminal side are arranged substantially symmetrically. Then, one end of each long hole link is pivotally attached to the support pin at the lower end of the screw shaft, and the operation pin of each holding hook is movably inserted into the long hole provided at the other end to compress and store the operation spring. Holding hook operating means for tripping the rear-entry position holding hook and tripping the tension-accumulated rear-off position holding hook of the operating spring, and the spindle for inserting (closing) the first terminal and the third terminal of the switch. ), And an opening / closing means consisting of an auxiliary switch that operates at a position corresponding to the cut (open) position, and a rotatably mounted on the main shaft and serving as a cut position stopper of the operation lever, and a switching indicator pin. Implanted and provided with switching handle pin insertion hole A switching lever, a stop pin supported by a link frame and movable in the axial direction of the main shaft, a knob at the front end, a stop pin having a large diameter part in part, and a large diameter part of the stop pin provided on the periphery of the switching lever are engaged. The position of the switching lever is fixed together, and the two recesses that are disengaged when the stop pin is moved and the operation surface for operating the switching detection limit switch are provided, and the rotation range of the operation lever is restricted. And a selector for selecting an opening / closing operation on the first terminal side or the third terminal side. 2. The open / closed state of the switch, which is the position of the operating lever, is indicated by a window hole in a display plate and a cover provided at the front end of the spindle, and the selection result by the selecting means is indicated by the switching display pin and the display window in the cover. 3. The switch operating device according to claim 1, further comprising: a display unit that displays the selection result by a switch detection limit switch.