JP3314459B2 - Switchgear operating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation mechanism of a switch, and more particularly, to a switchgear having a function of a disconnecting switch and a grounding position.
The present invention relates to a spring-type operating mechanism of a three-position switch for performing operations in three positions, that is, cutting (opening) and grounding with a single operating device.

[0002]

2. Description of the Related Art Like a disconnecting switch with a grounding device, it is configured to have a mechanism of a disconnecting switch and a grounding device in combination, and the operation of three position states of ON (close), OFF (open), and ground is performed by one. As a so-called three-position switch spring-type operating mechanism (hereinafter simply referred to as an operating mechanism) performed by an operating device, there is an operating mechanism as illustrated in FIGS. 7 to 9. This operating mechanism is mounted on the disconnector 1 with a grounding device as shown in FIG.

The disconnecting switch 1 with a grounding device comprises an operating mechanism 3 installed below a disconnecting switch body 2.

The disconnector body 2 has a first terminal 4 and a second terminal 6.
And a third terminal 5, and a first terminal 4 and a ground terminal (third terminal) 5 are arranged at predetermined positions inside the second terminal 6, and the second terminal 6 is movable by switching between the first terminal 4 and the third terminal 5. Connected to terminal 7.

The movable terminal 7 is moved by a link mechanism 8 linked to the operating mechanism 3 to a cutting position indicated by a solid line in FIG.
A switching operation is performed between a ground position connected to the ground terminal 5 shown by a dashed line and an on position shown by a dashed line.

[0006] This switching operation is performed by the operating mechanism 3 which operates quickly by using the stored energy of the spring in order to minimize damage caused by arcing.

The operating mechanism 3 is configured as shown in FIGS. The operating mechanism 3 includes a main shaft 9 and a first operating shaft 1.
0 and the second operation shaft 11.

The first operation shaft 10 and the second operation shaft 11 have:
Spring levers 12 and 13 are fitted, respectively, and a spring member 14 composed of a compression coil spring is mounted between these two spring levers 12 and 13. That is, one end of the spring member 14 is pivotally attached to the free end of 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 connected to the main shaft 9. A pin 16 protrudes from the free end of one protruding piece 15 a of the main lever 15.

Further, the root end of the first long hole link 18 is pivotally attached to the free end of the first link lever 17 fitted to the first operation shaft 10, and the free end of the first link lever 17 is attached to the tip of the first long hole link 18. The pin 16 is movably inserted into the elongated hole 19 provided. At the same time, the root end of the second long hole link 21 is pivotally attached to the free end of the second link lever 20 fitted to the second operation shaft 11, and
The pin 16 is inserted into the long hole 24 provided at the tip of the long hole link 21.
The main lever 15 is interlocked by movably inputting.

A part of the disconnector link mechanism 8 is pivotally connected to and linked to the free end of the other protruding piece 15b of the main lever 15. In addition, 23, 26, 27, and 28 are stoppers.

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

In this device, the first operation shaft 10 is rotated counterclockwise to switch from the off state to the ground state, and the second operation shaft 11 is rotated counterclockwise. The operation direction is designed so as to change from the off state to the on state.

First, 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). In accordance with this operation, the spring lever 13 stores energy while accumulating the spring member 14 while rotating counterclockwise.
The second long hole link 21 pivotally connected to the link lever 20 moves to the left as viewed in the figure, but since the pin 16 can move inside the long hole 24, the main lever 15 is stationary. Further, the spring lever 13 is rotated, and the dead center 2
When the number exceeds 2, the stored energy is released to rotate vigorously, and the spring lever 13 hits the stopper 23 and stops. On the other hand, the end of the elongated hole 24 comes into contact with the pin 16 and vigorously rotates the main lever 15 in the clockwise direction to reach the entering 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 performed in a completely opposite manner to the above.

Next, a description will be given of a case where a transition is made from the off state shown in FIG. 7 to the ground state shown in FIG. In this case,
The first operation shaft 10 is rotated counterclockwise by a manual operation device (not shown) or the like. Then, the spring lever 12 accumulates the spring member 14 while rotating counterclockwise,
The first long link 18 pivotally connected to the first link lever 17 moves rightward in the figure, but the main lever 15 is stationary because the pin 16 can move inside the long hole 19. 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 vigorously rotates the main lever 15 counterclockwise to reach the ground contact position. The disconnector associated with this operation also shifts from the off state to the ground state.

The operation of shifting from the ground state to the off state is performed in a completely opposite manner to that described above.

[0018]

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

Therefore, the angle between the line connecting the main shaft 9 and the first operation shaft 10 and the line connecting the first operation shaft 10 and the second operation shaft 11 is an acute angle (about 130 degrees). The distance between the main shaft 9 and the second operation shaft 11 is significantly longer than the distance between the main shaft 9 and the first operation shaft 10. For this reason, the entire length of the second elongated hole link 21 is increased, and there is a problem that the useless space is large and the volume is large as a whole structure, so that the production cost is increased.

Further, the second long hole link 21 is connected to the spring member 1.
Therefore, the first operating shaft 10 and the second operating shaft 11 respectively have a spring lever and a first link lever, or a spring lever and a second link lever.
There was a problem that one lever was required and the number of members increased.

In addition, since the operating angle of each lever and link becomes oblique in the entire mechanism and there are few portions that operate vertically or in parallel, it is difficult to determine the angle of each member from the viewpoint of mechanical design, and it is difficult to assemble. In this case, there is a problem that it is difficult to adjust the stroke of the elongated link or the like.

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

In view of the above points, the present invention can be operated by a single shaft which also serves as a main shaft and an operation shaft, has a simple structure and can be miniaturized, has a simple operation, is inexpensive and can be easily manufactured. An object of the present invention is to provide a new operation mechanism for a switch.

[0024]

Means for solving the above problems in the present invention are to arrange a first terminal and a third terminal, and to insert (close) each of the first terminal and the third terminal. An operating device for a switch which is provided with a second terminal connected to a movable terminal to be cut (opened) and which is driven by a main shaft of an operating mechanism via a lever, a link or the like; Drive operating means for vertically moving a screw shaft screwed into the female screw gear via a female screw gear, and the screw being elastically mounted between a tip end of an operating lever for rotating the main shaft and an end of the screw shaft. Rotating operating means for rotating the main shaft by the release of an operating spring which performs compression and tension storage by vertical movement of the shaft, and on / off positions for opening and closing operations on the first terminal side and the third terminal side Hold the hooks on the left and right sides of the tip of the operation lever. Position holding means which is arranged substantially in a symmetrical shape, holds the operating lever at one of the on-position holding hook or the off-position holding hook, accumulates the operation spring, and holds it with the other holding hook after releasing, compressing prestressing operation spring by vertically moving the threaded shaft, is Hozei remove the engagement of the switching position retaining hooks held during prestressing completion, after Hozei tensile蓄held in oN position holding hooks Enable the momentum,
Holding hook operating means for releasing the engagement of the input position holding hook when the tension accumulation is completed, and selection for restricting the rotation range of the operation lever and selecting opening / closing operation on the first terminal side or the third terminal side Means. Further, an opening / closing means which operates at upper and lower limit positions of the screw shaft and at a position where the accumulation of the operation spring is completed is provided.

[0025] Further, an opening / closing means which operates at the upper and lower limit positions of the screw shaft and at the position where the operation spring is fully charged is provided.

[0026]

The switching lever is used to select whether to perform the opening and closing operation with the first terminal or the opening and closing operation with the third terminal. When the former is selected, the switching lever is held by the holding pin. The operation spring is held at the switching position, and the screw shaft is moved downward to accumulate the operation spring. When the operation spring is energized, one end of the long hole of the long hole lever pushes down the operation pin to release the cutting position holding hook, and when the hook is removed, the operation spring is released and the main shaft is moved via the operation lever. To the first terminal insertion position. Next, the operation spring is charged by moving the screw shaft up and down. When the operating spring is energized, one end of the long hole of the long hole lever pulls up the operating pin to release the entry position holding hook, and when the hook is removed, the operating spring releases and the main shaft is moved through the operating lever. Rotate to the cutting position. When the latter is selected, opening and closing operations can be performed with the third terminal in exactly the same manner.

[0027]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to an embodiment shown in the drawings.

FIG. 1 is an explanatory view of the basic operation of an embodiment of the present invention. In FIG.
An operation motor 31 fitted with 0 is driven by a small bevel gear 30 and is a bevel gear with a female screw for moving the screw shaft 32 up and down, and these form a drive operation means. 9 is the main shaft,
Reference numeral 33 denotes an operation lever fitted to the main shaft 9, reference numeral 34 denotes a pin protruding from a free end of the lever 33, reference numeral 35 denotes an operation spring, one end of which is pivotally connected to the pin 34, and the other end of which is the screw shaft 3.
2 is pivotally attached to a support pin 63 at the lower end of the second shaft 2 to form a rotating operation means for the main shaft 9. Reference numeral 36 denotes a switching lever for selecting whether to perform opening / closing operation with the first terminal or opening / closing operation with the third terminal, 37 a stop pin, 38
Is a stop pin return spring, which forms switching selection means. 39 is a cutting position holding hook on the first terminal side;
Reference numeral 0 denotes an insertion position holding hook, reference numeral 48 denotes a cutting position holding hook on the third terminal side, and reference numeral 49 denotes an insertion position holding hook. These position holding hooks are operation pins 41, 4 for releasing the hooks on the free end side.
2 and 50, 51 are implanted, and these form the position holding means of the operation lever 33. 43 and 44 are long holes 4 into which the operation pins 41 and 42 are movably inserted.
A first terminal-side long hole link having a root end pivotally attached to a support pin 63 at a lower end of the screw shaft 32;
53 has long holes 54 and 55 at its distal end into which the operation pins 50 and 51 are movably inserted, and a third terminal side long hole link whose root end is pivotally connected to the support pin 63 of the screw shaft 32. Thus, the holding hook operating means for operating the position holding hooks is formed by these. 47 and 56 are the first operation levers 33
And a stopper on the third terminal side. Note that the position holding means and the holding hook operating means on the first terminal side and the third terminal side are configured substantially symmetrically to the left and right.

Next, the operation of the above-described apparatus of the present embodiment will be described with reference to FIG.

FIG. 1 is a view showing a state in which the opening / closing operation with the first terminal is selected. In FIG. 1A, the screw shaft 32 is lowered to accumulate the operation spring 35. When the operating spring 35 is energized, the upper end of the elongated hole 45 pushes down the operating pin 41, the cutting position holding hook 39 is released, and the operating lever 33 rotates clockwise with the main shaft 9 by the urging force of the operating spring 35. And
The stopper 47 hits the stopper 47 at the entry position with the first terminal, and is held at the entry position by the entry position holding hook 40 as shown in FIG.

In FIG. 1B, the screw shaft 32 is moved up to accumulate the operation spring 35. When the operation spring 35 is charged, the lower end of the long hole 46 pulls up the operation pin 42, the entry position holding hook 40 is released, and the operation lever 33 rotates counterclockwise with the main shaft 9 by the urging force of the operation spring 35. Then, the switching lever 36 stops at the cutting position, and is held at the cutting position by the cutting position holding hook 39 as shown in FIG.

To select an opening / closing operation with the third terminal, the switching lever 36 is rotated counterclockwise to
Is engaged with the cutting position holding hook 48. Switching lever 36
Is held by the stop pin 37 pressed by the stop pin return spring 38 at the selected position.

Switching on and off with the third terminal is performed in the same manner as switching on and off with the first terminal. That is, the screw shaft 32 in FIG.
When the operation spring 35 is accumulated, the upper end of the elongated hole 54 pushes down the pin 50, the cutting position holding hook 48 is removed, and the operation lever 33 is rotated counterclockwise to enter the third terminal. At this position, it stops against the stopper 56 and is held at the entry position by the entry position holding hook 49.

In FIG. 1B, the screw shaft 32 is raised,
When the operation spring 35 is energized, the lower end of the long hole 55 pulls up the operation pin 51, the hook 49 for holding the input position is released, the operation lever 33 is rotated clockwise, and the switching lever 3 is turned at the off position.
6 and is stopped at the cutting position by the cutting position holding hook 48.

The above operation is described by fitting the connecting lever 57 shown by a two-dot chain line to the main shaft 9 in FIG. 1, connecting to the link mechanism 8 in FIG. 7, and replacing the third terminal with a ground terminal. The operation of the grounding device shown in FIG. 7 will be described.

The operation mechanism of the switch described above is shown in FIGS.
As in the case of the conventional operation mechanism illustrated in FIG. 9, the on / off operation is performed after the operation spring is charged. However, the following operation is performed by storing the operation spring after the on / off operation. An operation mechanism provided for the device will be described.

FIG. 2 is an explanatory view showing another embodiment of the present invention.
In FIG. 2A, 58 is the upper limit position, 59 is the lower limit position,
Numeral 60 denotes a position where the tensioning and charging of the spring member is completed, numeral 61 denotes a position switch that operates at each position of the position where the compression and charging of the spring member is completed, and 62
Is a piece attached to the lower end of the screw shaft 32 for operating each position switch. The other parts are exactly the same as in FIG.

FIG. 2 shows a state in which the opening / closing operation with respect to the first terminal is selected. The screw shaft 32 is lowered to complete the compression and accumulation of the operation spring, and a position switch (hereinafter abbreviated as LS) 61 is shown. Operates to operate the motor (hereinafter simply referred to as motor) 29
In FIG. 2A showing a state in which the motor has stopped, the motor 29 further lowers the screw shaft 32 by the closing operation signal of the first terminal. The operation pin 41 is pushed down by the upper end of the long hole 45, the cutting position holding hook 39 which has locked the operation lever 33 via the pin 34 is released, and the operation lever 33 is rapidly clockwise moved by the operation spring 35. It is turned and stopped by the stopper 47 at the entry position with the first terminal, and is held at the entry position by the entry position holding hook 40. On the other hand, when the screw shaft 32 moves down to the lower limit position, the LS 59 operates and the electric motor 29 rotates in the reverse direction, the screw shaft 32 rises and the operation spring 35 is charged. When the LS 60 operates, the motor 29 stops, and FIG.
The state shown in FIG.

In FIG. 2B, the motor 29 further raises the screw shaft 32 in response to the opening operation signal of the first terminal.
The operation pin 42 is pulled up by the lower end of the long hole 46, the entry position holding hook 40 is removed, and the operation lever 33 is rapidly turned counterclockwise by the urging force of the operation spring 35,
At the cut position with the terminal, the switch lever 36 stops at the cut position, and is held at the cut position by the cut position holding hook 39. On the other hand, when the screw shaft 32 rises to the upper limit position, the LS 58 operates and the electric motor 29 rotates in the reverse direction, and the screw shaft 32 moves down to operate the operating spring 35.
Is accumulating. When the LS 61 operates, the electric motor 29 stops, and the state shown in FIG.

The switching operation between the third terminal and the third terminal is selected by the switching lever 36 in the same manner as described above, and the pin 34 of the operating lever 33 is engaged with the cut position holding hook 48.

The on / off connection with the third terminal is also performed when the on / off connection with the first terminal is performed.
0, a cut position holding hook 48, an input position holding hook 49, and a stopper 56 are used in place of the stopper 47, and the operation lever 33 rotates counterclockwise and stops against the stopper 56 to enter the third terminal. In addition to turning in the direction and hitting the switching lever 36 to stop and disconnect from the third terminal, the screw shaft 32, L
Steps S58 to S61 and the relationship with the electric motor 29 are the same as those in the case of switching on and off with the first terminal, and therefore description thereof is omitted.

FIGS. 3 to 6 show one embodiment of the configuration of the present invention for performing the above-described basic operation. FIG. 3 shows a state in which an open / close operation with a third terminal is selected. FIG. 3 shows a state in which a cover is removed. 4 is a sectional view taken along the line AA of FIG. 1, FIG. 5 is a view taken along the arrow B of FIG. 1, and FIG. 6 is a sectional view taken along the line CC of FIG.

Parts having the same functions as those in FIGS. 1 and 2 are denoted by the same reference numerals as those in FIGS.

Reference numeral 64 denotes a support member, and link frames 65 and 66 are attached to the lower surface of the support member 64 so as to face each other as shown in FIG. As shown in the drawing, the screw shaft 32 and the operation spring 35 are disposed between the link frames 65 and 66 and are elastically mounted between the spring receiving members 91 and 63 '. The spindle 9 is provided with the link frame 65,
The operation lever 33 is fixedly mounted on the front side as shown in FIG. 3, and the switching lever 36 is rotatable.
It is attached to. A pin 34 is implanted on the free end side of the operation lever 33, and the pin 34 has a roller follower 34 '.
Is provided. Further, on the outer peripheral edge of the switching lever 36, first and second concave portions 36 for fitting the stop pins 37 are provided.
a, 36b, arc part 36c, limit switch operation part 3
6d and 36e are formed. As shown in FIG. 4, the stop pin 37 is supported by the link frames 65 and 66 so as to be able to slide back and forth, has a large diameter portion 37a on a part of the small diameter rod, and has a stop pin return spring. 38 is armed,
The stop pin 37 is always biased to the right (retracting direction) in FIG. Then, in the state shown in FIG.
The large-diameter portion 37a fits into the lever to hold the operation lever 33 at the position shown in the figure. The state shown in the figure is a case where the opening / closing operation on the third terminal 5 side (ground terminal side) in FIG. 7 is performed. When switching from this state to the opening / closing operation on the first terminal 4 side, the stop pin 37 is set. Pulling out to the front side (left side in FIG. 4), the first concave portion 36a of the switching lever 36 and the large-diameter portion 37a are disengaged, and the operation handle OH (FIG. When the second concave portion 36b reaches the position of the stop pin 37 after passing through the circular-arc portion 36c in the clockwise direction, the large-diameter portion 37a of the stop pin 37 of the concave portion 36b engages and holds the position. I do.

In the link frames 65 and 66, support pins 63 for supporting the operation spring 35 and the long hole links 43.44, 52 and 53 are vertically movable in vertical grooves 67 and 68 provided in the frames 65 and 66. It is inserted in. Slots 45, 46, 54, 5 of the slots 43, 44, 52, 53
Operation pins 41, 42, 50, 51 are slidably inserted into 5, respectively, and the cutting position holding hooks 39, 48 are connected to the operation pins 41, 50 via the hook pins 69, 71, and the entry position holding hook 40. , 49 are also the cutting position holding hooks 39, 4
8 similarly to via the hook pin 70, 72 operation pin 4
2, 51 (on the back side of the long hole links 43, 52 in FIG. 1) ( or alternatively, without using the hook pins 70, 72 in common ).
Hook pins 70 and 72 may be provided upright).
You. A hook return spring 73 is elastically mounted on each of the hook pins 69, 70, 71, 72, and urges each holding hook in a predetermined direction.

The drive operation part for rotating the screw shaft 32 is
A screw shaft spur gear 74 that is rotatable and immovable up and down, a female screw gear 75 fixed to the spur gear 74 and into which the screw shaft 32 is screwed, and attached to the upper part of the support member 64. A bevel gear 76, a small bevel gear 77 meshed with the bevel gear 76, a manual handle shaft 78 for manually operating the small bevel gear 77, and an operation motor 29 via a speed reducer 79 and the screw shaft It is composed of a spur gear 74 and a motor-side spur gear 80 meshed.

In the case of manual operation with this drive operation unit,
The manual handle shaft 78 is operated by a handle, and in the case of an electric motor, the operation motor 29 is driven to move the screw shaft 32 up and down. In the stop control of the operation motor 29, the operation completion is detected by the auxiliary switch 81 which is interlocked with the rotational operation of the main shaft 9 when the operation motor 29 is operated upward and downward, and a stop signal is issued to stop the operation.

Although the operation motor 29 is mounted on the right side of the screw shaft 32 in FIGS. 3 and 5, it can be mounted on the left side, so that the space for the installation location can be accommodated.

In the drawing, reference numeral 82 denotes a link mounting frame;
3 is a cover, and 84 is an on / off indicator.

[0050]

The operation mechanism of the switch according to the present invention having the above-described structure is different from the conventional operation mechanism which requires the first and second operation shafts in addition to the main shaft, and has only the main shaft. It becomes extremely simple, and no lever or link is required to connect the main shaft with the first and second operation shafts. 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 caused by the large number of levers and links are eliminated.

Conventionally, in the case of electric operation, an operation motor is provided for each of the first and second operation shafts to accumulate the spring member at each of forward and reverse rotations, and to release the force during the rotation. However, a special shaft joint that transmits torque when accumulating and slides when releasing is required, but in the case of the present invention, only the electric motor for accumulating the operating spring is sufficient, and a special shaft joint is not required, so the size is reduced. And reduce costs.

Selection of switching between the first terminal and the third terminal can be easily made by turning the switching lever. Is performed by removing the on / off position holding hooks arranged symmetrically about the line connecting the switching lever and the main shaft, so that the on / off operation with the first terminal and the on / off operation with the third terminal can be performed. The operation is exactly the same, and since it has a simple configuration, there is little possibility of failure.

Since the on / off position holding hook is released by a long hole link which is linked with a screw shaft for accumulating the operation spring, no special removing device is required, the number of parts is reduced, and the structure is simplified. Has been

Also, in the apparatus provided with the operation spring accumulating completion position switch, the operation spring is energized after receiving a closing or opening operation signal to perform an on / off operation. Since the next operation is provided by energizing the operation spring, the operation time from when the closing or opening operation signal is received to when the on / off operation is completed can be shortened.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a basic operation of one embodiment of the present invention. (A)
FIG. 4 is a state diagram after the operation lever is turned off. (B) is a state diagram after the operation operation of the operation lever.

FIG. 2 is an explanatory diagram of a basic operation of another embodiment of the present invention.
(A) is an accumulation state figure of a spring member in the cut position of the operation lever. FIG. 4B is a diagram showing the state of energy stored in the spring member at the position where the operation lever is in the on position.

FIG. 3 is a front view of the configuration of one embodiment of the present invention.

FIG. 4 is a sectional view taken along the line AA of FIG. 1;

FIG. 5 is a view as viewed from the direction of the arrow B;

FIG. 6 is a sectional view taken along arrows CC in FIG.

FIG. 7 is a configuration diagram of a disconnector with a grounding device equipped with a conventional operation mechanism.

FIG. 8 is an explanatory view of a conventional operation mechanism.

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

[Explanation of symbols]

 7 movable terminal 9 main shaft 32 screw shaft 33 operating lever 34 pin 35 operating spring 36 switching lever 37 stop pin 39, 48 cutting position holding hook 40, 49 input position holding hook 41, 42, 50, 51 ... operation pins 43, 44, 52, 53 ... long-hole links 45, 46, 54, 55 ... long holes 58, 59 ... upper and lower limit position switches 57 ... connecting levers 60, 61 ... storage completion position opening and closing Container 63 ... Support pin 64 ... Support member 65, 66 ... Link frame 67, 68 ... Vertical groove 69, 70, 71, 72 ... Hook pin 73 ... Hook return spring 74 ... Screw shaft spur gear 75 ... Female screw gear 76 ... Bevel gear 77 … Small bevel gear 78… manual handle shaft 79… reduction gear 80… motor side spur gear 81… auxiliary switch 82… link mounting frame 83… cover 84… on / off Ndiketa

Continuation of the front page (56) References JP-A-51-127468 (JP, A) JP-A 4-85546 (JP, U) JP-A 5-38744 (JP, U) Jiko 49-44195 (JP) , Y1) (58) Fields investigated (Int. Cl. ⁷ , DB name) H01H 33/40 H01H 33/42 H01H 33/52 H01H 31/02

Claims (7)

(57) [Claims] A first terminal and a third terminal are arranged, and a second terminal connected to a movable terminal to be turned on (closed) and cut off (open) respectively by the first terminal and the third terminal is provided. An operating device of a switch in which the movable terminal is driven by a main shaft of an operating mechanism via a lever, a link, etc., wherein a screw shaft screwed into the female screw gear via an operating motor or a manual female gear is moved up and down. A drive operating means for rotating the main shaft, and an operating spring which is elastically mounted between the distal end of the operating lever for rotating the main shaft and the end of the screw shaft and which performs compression and accumulation by the vertical movement of the screw shaft. Rotational operation means for rotating the main shaft by force, and on / off position holding hooks for opening and closing operations on 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. And the hook for holding the entry position or the hook for holding the off position On the other hand, a position holding means for holding the operation lever to accumulate the operation spring and holding it with the other holding hook after releasing, compressing and accumulating the operation spring by the vertical movement of the screw shaft, and the accumulation is completed. is Hozei remove the engagement of the switching position retaining hooks at held, Hozei after, to enable the tensile prestressing held in oN position holding hooks, tensile prestressing upon completion entry position holding hook engaging And a selector for restricting the rotation range of the operation lever and selecting an opening or closing operation on the first terminal side or the third terminal side. Operating device. 2. The operating device for a switch according to claim 1, further comprising opening / closing means that operates at upper and lower limit positions of the screw shaft and at a position where the operation spring is fully charged. 3. The driving operation means is constituted by a screw shaft spur gear fixed to the female screw gear, a motor side spur gear meshing with the spur gear, and an operation motor driving the motor side spur gear. The switch operating device according to claim 1 or 2, wherein 4. The rotating operation means includes two link frames attached to the support member so as to face each other, a main shaft pivotally supported by the frame, and an operation spring disposed between the opposed link frames. The switch operating device according to claim 1, wherein the switch is operated. 5. The position holding means includes a first terminal side and a third terminal side.
An on-holding hook and an off-holding hook for each opening / closing operation on the terminal side are rotatably mounted on hook pins projecting from the opposite side of the opposing link frame, and operated on one end of each holding hook. The switch operating device according to claim 1, wherein the switch is provided with a pin. 6. The holding hook operating means includes a vertical groove provided in two opposing link frames, and is vertically movably inserted into the vertical groove and connected to a screw shaft to be vertically moved by operating the screw shaft. A movable support pin, and long hole links for operating the opening and closing position holding hooks and the cutting position holding hooks for opening and closing operations on the first terminal side and the third terminal side are arranged substantially symmetrically to the left and right. 2. An operating pin of each of the holding hooks is movably inserted into an elongated hole provided at the other end, the end being pivotally connected to the support pin.
Or the switch operating device according to 2 or 3 or 4 or 5. 7. A switching means for selecting whether to open or close on the first terminal side or on the third terminal side, a switching lever provided on the main shaft, and supported by a link frame, movable in the main shaft direction and partially large. A stop pin having a diameter portion, and two recesses provided on the periphery of the switching lever and engaged with the large diameter portion of the stop pin to fix the position of the switching lever and disengage when the stop pin is moved. The switch operating device according to claim 1, wherein the switch is operated.