JPS6262009B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a control device for a switch.

FIG. 1 shows an example of the configuration of an opening/closing part of a switch that is opened and closed by a switch operating mechanism according to the present invention.

In FIG. 1, 1 is a vacuum switch tube,
A lead is connected to the outside of the fixed electrode and the movable electrode, respectively. 2 is a movable stud, 3
is an insulation mold, 4 is a wipe spring, 5 is a lever,
Reference numeral 5a is a shaft, and the main shaft is adjusted through various functions such as adjustment of mounting dimensions by the movable stud 2, electrical insulation by the insulating mold 3, contact pressure by the wipe spring 4, and converting rotational motion into linear motion by the lever 5. The movement in the rotational direction at 6 moves the movable electrode to open and close the vacuum switch tube 1. The main shaft 6 is rotatably supported in the housing 10 by a main shaft pin 0610. Further, the main shaft 6 is provided with a crank 7 and a crank pin 12 at its tip, and this crank pin 12 is connected to a crank window 10 provided in the housing 10
By moving the crank pin 12, the main shaft 6 is moved in the rotational direction via the crank 7, and the vacuum switch pipe 1 is opened and closed.

Note that the crank window 1012 is connected to the crank pin 12.
has the required width to allow the movement necessary to open and close the vacuum switch tube 1.

Since the switch is configured as described above, the switch can be opened and closed by driving the crank pin 12 in the required direction for the required stroke. However, when opening and closing the switch, generally an arc is generated at the contact part when closing and closing the switch. Therefore, the opening/closing operation of the switch contact must be performed at a constant speed, regardless of whether the operator performs a closing or closing operation. Also, in case of an emergency,
Since a trip function is also required that allows cutting to be performed at a constant speed regardless of manual operation, the crank pin 12 is not normally operated manually, but instead is operated manually. The crank pin 12 is driven by converting the force into a closing/disengaging operation force at a constant speed, and is also driven via an operating mechanism section that can perform a trip operation if necessary.

The present invention relates to a control device that satisfies the above-mentioned requirements, and provides a control device for a circuit breaker that has a simple structure and has the above-mentioned quick closing and shutting and tripping functions.

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

FIGS. 2, 3, and 4 are diagrams showing a switch operating mechanism that is a part of the device according to the embodiment of the present invention.
Regarding the opening/closing operation, FIG. 2 shows the closed state, FIG. 3 shows the closed state, and FIG. 4 shows the state in the process from shutting off to closing. In FIG. 2, reference numeral 11 denotes an operating lever, one end of which is rotatably connected to the crank pin 12, and a spring 13 is applied to a pin 1112 provided near the center of the lever, urging it upward in the drawing. There is. A spring 14 is hung on a connecting pin 1121 provided at an intermediate position of the crank pin 1112 on the operating rod 11, and serves to auxiliary bias the spring 13. Further, the other end of the operating rod 11 hits a stopper 41 fixedly provided on the housing 10, so as to limit the range of movement in the upper direction in the drawing.

21 is a latch arm, one end of which is the operating rod 11
is rotatably connected to the connecting pin 1121.

Reference numeral 22 denotes a fan-shaped lever, one end of which is rotatably attached to a rotating shaft 1022 fixed to the housing, and rotatably connected to the latch arm 21 by a connecting pin 2122. 23 is rotatably attached to a rotating shaft 1023 fixed to the housing 10 by an L-shaped latch, so that a roller 2223 provided on the L-shaped latch 23 can slidably engage with a shoulder 2201 of the fan-shaped lever 22. It's getting old. 24
is a tri-platz, which is rotatably attached to a rotating shaft 1024 fixed to the housing 10 and has a notch 24 therein.
01 is a roller 232 provided on the L-shaped latch 23
4 in a slidable manner.

Reference numeral 31 denotes a charging arm, one end of which is rotatably connected to the operating rod 11 by a connecting pin 1131. Reference numeral 32 denotes a loading link, one end of which is rotatably connected to the loading arm 31 by a connecting pin 3132. Reference numeral 33 denotes a closing lever, one end of which is rotatably connected to the closing link 32 by a connecting pin 3233, and the other end is joined to a handle shaft 34 that applies an operating force from the outside, and is connected to the housing 10 by a bearing 3334. Rotation is maintained automatically.

Note that the spring 14 is provided to assist the spring 13 in the event of shearing, and thereby the size of the spring 13 can be reduced.

35 is an auxiliary link, connecting pin 1 to operating rod 11
They are rotatably connected via 131. 36 is an auxiliary lever connected to the auxiliary link 35 with a connecting pin 3536
The other end is rotatably connected to a connecting pin 3638 provided on the stop lever 38 that abuts against the stopper 41. Also, 40 is an auxiliary spring, one end of which is attached to the housing 1.
0, and the other end is fixed to the auxiliary lever 36, and operates to push the auxiliary lever 36.

FIG. 3 shows the same switch operating mechanism as FIG. 2 in a closed state. FIG. 4 similarly shows a state in which the springs 13 and 14 are loaded before entering the closing state. At this time, the releasing force of the auxiliary spring 40 acts to push down the operating rod 11 via the auxiliary link 35, and as a result acts in a direction against the spring 13. .

FIG. 5 is an exploded perspective view of a handle shaft operating mechanism section for operating the handle shaft 34 of the operating mechanism section of the switch. This handle shaft operating mechanism section is roughly divided into a closing mechanism that rotates and closes the handle shaft 34, and a lock holding mechanism that locks and holds the handle shaft 34 in the closed state.

Figures 6 and 7 are of the above-mentioned loading mechanism, Figure 8,
FIG. 9 is an explanatory view showing the different operating states of the lock holding mechanism.

First, the closing mechanism of the handle shaft operating mechanism will be explained. In Figures 6 and 7, 34
is the handle shaft itself, which is the handle shaft shown in FIGS. 2 to 4 above. This handle shaft 34 is rotatably supported by the housing 101a via a bearing 102. 103 is this handle shaft 3
4, and has a manual handle insertion part 103a. Reference numeral 104 denotes a closing gear which is integrally connected to the plate 104a at a predetermined interval and is rotatably supported between the casings 101a and 101b. 105 is a pin 105 between the input gear 104 and the plate 104a.
A feeding roller rotatably supported via a,
As the input gear 104 rotates, the input cam 10
3. 106 is a drive gear driven by the motor M and drives the closing gear 104; 107 is a limit switch operating lever for driving or stopping the motor M; the plate 104 is integrally provided with the closing gear 104;
It is operated by the protrusion of the pin 105a fixed to the pin 105a. One end 107a of this limit switch operating lever 107 is connected to a limit switch 108.
The other end is configured to operate pin 1.
07b, it is rotatably supported by the housing 101b. The operating lever 107 is always biased clockwise about the pin 107b via the end 107a by a spring built into the limit switch 108. Further, the lever 107 has an engaging portion 107c for engaging with the protruding portion of the pin 105a, and a bent portion 107b for engaging with the housing 101b for positioning in the clockwise direction. ing.

The housing 101b accommodates and supports each component of the input mechanism, and is fixed to the housing 101a.

The control mechanism A for trip-free operation and the control mechanism B for input error will be described later.

Next, the lock holding mechanism will be explained.

In FIG. 5, FIG. 8, and FIG. 9, reference numeral 121 is a substantially Z-shaped lock lever, which is rotatably supported by a shaft 122 on the housing 101c. This lock lever 121 has one end locked to the housing 101c, and the other end locked to a twist lever 121a fixedly installed on the lock lever 121.
3, it is always biased clockwise around the shaft 122. Also, the above lock lever 121
has an arm portion 121b for engaging with the shaft 5a shown in FIG. A lock cam 129 is fixedly disposed on the handle shaft 34 in a predetermined positional relationship, and is provided so as to be able to engage with the lock lever 121. One end is locked to the housing 101c and the other end is connected to the lock cam 129. The locked torsion spring 130 constantly biases the bearing 102 in a clockwise direction. The casing 101c stores and supports each component of the lock holding mechanism.
It is fixed to 01b.

FIG. 10 is an exploded perspective view of the control mechanism section that controls the motor M. This control mechanism section can be roughly divided into:
It consists of a control mechanism A for trip-free operation and a control mechanism B for input error.

11 and 12 are operation explanatory diagrams showing different operating states of the control mechanism A and FIG. 13 of the control mechanism B, respectively.

First, this control mechanism section A will be explained. Further, FIG. 14 shows a control circuit for the motor M. In Figure 10, Figure 11, Figure 12 and Figure 14, 10
Reference numeral 7 designates a limit switch operating lever, which is the same as the limit switch operating lever 107 shown in FIGS. 5 to 7. Reference numeral 151 designates a locking arm disposed to engage with one end 107a of the operating lever 107, and is rotatably held by a switch holding fitting 153 via a shaft 152. Furthermore, the locking arm 151 has a window 151a for engaging with the lever 154a of the micro switch 154 for locking operation, and an engaging portion 151b for engaging with one end 107a of the limit switch operating lever 107. , the lever part 108a of the limit switch 108 for stopping the motor M
It also contacts one end 107a of the limit switch operating lever 107, and is biased counterclockwise about the shaft 152 by a twist spring 155. 156 is a lever for operating the micro switch 15a, and a shaft 156a is attached to the switch holding fitting 153.
The microswitch 154 is held rotatably through the microswitch 154, and is biased counterclockwise about a shaft 156a by a spring built into the microswitch 154. Further, the operating lever 156 has a bent portion 156b that engages with the lever portion 154a of the micro switch 154, and a bent portion 156c that engages with the micro switch operating lever 157. 101a is a housing of the handle shaft operating mechanism section (see FIG. 5);
The operating lever 157 is rotatably held via the shaft portion 157a, and is biased clockwise around the shaft portion 157a by a torsion spring 158, so that the tip portion 157b and the main shaft 6 come into contact with each other. It is held by contact. Furthermore, the other end portion 157c is
It is disposed so as to engage with the protrusion at the other end of the pin 105a of the input mechanism.

Reference numeral 159 denotes an arm for operating the micro switch 154, which is fixedly installed on the main shaft 6 and has a bent portion 15 that engages with the lever portion 154a of the micro switch 154.
It has 9a.

The control circuit for the motor M is constructed as shown in FIG. 14a. That is, in Fig. 14, M is the motor, X and Y are the relays, X ₁ and X ₂ are the a contacts of relay X, and Y ₁ is the contact of relay Y. When energized, they switch to the position indicated by the broken line. . Reference numeral 154 denotes a contact point of the microswitch, and when the lever portion 154a thereof is pressed down, it switches to the position indicated by the broken line. Reference numeral 108 denotes a contact point of the limit switch, and when the lever portion 108a is pressed down, it becomes open as shown in the figure, and the lever portion 10
It is configured to close when 8a returns. S
is the input command switch. Further, as shown in FIG. 14b, the trip command circuit includes a trip command switch Z, a switch 160 (see FIG. 10),
and trip coil T are connected in series,
By energizing this trip coil T,
The trip latch 24 is rotated counterclockwise to open the switch contact. Note that the switch 160 is in the ON state only when the contact of the switch 1 is in the closed state.

Next, the operation will be explained.

When the contact of the vacuum switch is closed, the switch operating mechanism is as shown in FIG. ga tritu platsu 2
Since the roller 2223 is engaged with and suppressed by the notch 2401 of the fan-shaped lever 22, the roller 2223
I'm holding down 1. As a result, since the line connecting the connecting pin 1121 and the connecting pin 2122 is on the left side of the rotation axis 1022 in the drawing, the operating rod 11 is
Although a force is applied to rotate the fan-shaped lever 22 clockwise, the engagement between the roller 2223 and the shoulder 2201 keeps it locked in the state shown in FIG.

On the other hand, in this contact closed state, the closing mechanism of the handle shaft operating mechanism is in the state shown by the dashed line in FIG. 6, and the lock holding mechanism is in the state shown in FIG. 8.

That is, in the charging mechanism shown in FIG.
4. Through the pin 105a and the input roller 105,
The closing gear 104 rotates counterclockwise about the handle shaft 34 and completes contact closing at the solid line position, but the closing gear 104 continues to rotate and the protrusion of the pin 105a,
Limit switch 108 via lever 107
is operated and stopped at the position indicated by the dashed-dotted line, and the operation of the loading mechanism is completed. Further, in the lock holding mechanism shown in FIG. 8, the lock cam 129 fixed to the handle shaft 34 completes contact closing at the position shown by the dashed line in the figure, and the arm portion 121b is held in contact with the shaft 5a. The pin 121a of the lock lever 121 is held in contact with the pin 121a of the lock lever 121, and is held in the position shown by the solid line in the figure.

In this contact closed state, the motor control circuit
The motor M is in the state shown by the solid line in Fig. 4a, and the motor M is stopped.

Next, the operation when tripping in this state will be explained.

Now, the trip command switch Z shown in FIG. 14b
When the switch 160 is closed, the trip coil T is energized, and the trip latch 24 is pulled in the direction of arrow A in FIG. The shoulder 2201 of the fan-shaped lever 22 is released from being held by the roller 2223, and the fan-shaped lever 22 rotates clockwise.
moves to the cutoff position and opens the contacts of the vacuum switch 1. This state is shown in FIG. With this operation, the crank pin 12 moves to the cutoff position, causing the main shaft 6 to rotate clockwise, and the lever 5 to move from the position shown in FIG. 8 to the position shown in FIG. 9. As a result, the lock lever 121 is pushed by the shaft 5a and rotates counterclockwise about the shaft 122, so the lock cam 129 is released from the pin 121a, and the handle shaft 34 is rotated clockwise by the biasing force of the torsion spring 130. rotate in the direction. As a result, the loading mechanism and lock holding mechanism are as shown in FIGS. 7 and 9, respectively.
It is in the state shown in the figure and waits for the next input operation.

At this time, the motor control circuit remains in the state shown by the solid line in FIG. 14a. If the closing command switch S is closed in this state, the relay X will be energized and its a contacts X ₁ and X ₂ will be closed. When contact _X1 closes, motor M starts rotating, and contact
Relay X is self-maintained by closing _X2 .

Now, when the motor M starts rotating as described above, the input gear 104 starts to rotate clockwise from the position shown in FIG. 6, and therefore the input roller 105 and the operating lever 107 are disengaged. As a result, due to the spring action of the limit switch 108 and the locking arm 151 that are in contact with one end 107a of the operating lever 107, the operating lever 107 rotates clockwise about the pin 107b, and the casing 101b and the bending portion 1
07d comes into contact and stops. Also locking arm 151
rotates counterclockwise around the shaft 152,
It comes into contact with the tip of the lever portion 154a of the micro switch 154 and stops. This action causes the lever portion 108a of the limit switch 108 to return to its original position, thereby closing its contact. Motor M is further energized through contact X ₁ of relay
continues to rotate, so that the input roller 105 engages the input cam 103 and rotates it counterclockwise. As a result, the handle shaft 34 is rotated counterclockwise, and the operating rod 11, which is in the state shown in FIG. , the spring 13 is energized accordingly. At the same time, the latch arm 21 is also pushed down and the fan-shaped latch 22 rotates counterclockwise, causing the roller 2223 to rotate.
slides over the roll portion 2202 of the fan-shaped lever 22. Since the L-shaped latch 23 is lightly biased clockwise by a spring (not shown) around the rotating shaft 1023, counterclockwise rotation of the fan-shaped lever 22 causes the roller 222 to be attached to the shoulder 2201 of the L-shaped latch 23.
3 engages.

On the other hand, since the trigger latch 24 is lightly biased clockwise by a spring (not shown), when the shoulder portion 2201 and the roller 2223 are engaged, the roller 2324 is pushed into the notch 2401 of the trigger latch 24.
It is locked by.

In the process of biasing this series of springs 23,
Until the crank pin 12, connecting pin 1131, and connecting pin 3536 are aligned, the auxiliary spring 40 is also biased and acts to push up the operating rod 11.
After that, the auxiliary spring 40 radiates heat and acts in a direction to push down the operating rod 11. Through the above process, the state shown in FIG. 4 is reached.

When the handle shaft 34 further rotates counterclockwise, the roller 3201 of the input link 32 hits the locking stopper 42, and the position of the connecting pin 3132 moves from the right side to the left side in the drawing from the line connecting the connecting pin 1131 and the connecting pin 3233. Therefore, the operating rod 11 is driven upward in the drawing by a force determined by the difference between the tensile force of the spring 13 and the expanding force of the catch spring 40, and the operating rod 11 is driven upward in the drawing, using the connecting pin 1121 as a fulcrum. The operating rod 11 rotates and the crank pin 12
Move to the input position. Note that by selecting the sizes of the spring 13 and the auxiliary spring 40, the speed at the time of closing can be set to a predetermined speed.

As a result of the above, the state returns to the closed state shown in FIG.

In the closed state, the position of the connecting pin 1181 is above the line connecting the crank pin 12 and the connecting pin 3536 in the drawing, so the force due to the tensile force of the spring 13 and the force due to the expansion force of the auxiliary spring 13 are added. Since the operating rod 11 is rotated counterclockwise using the connecting pin 1121 as a fulcrum, a large closing holding force acts on the crank pin 12.

The above closing operation is completed with the closing cam 103 and closing roller 105 in the state shown in FIG. 11, but when the contact of the switch 1 is closed, the main shaft 6 moves from the position shown in FIG. 7 to the position shown in FIG. Since it rotates counterclockwise, the operating arm 159 fixed to the main shaft 6
Accordingly, the micro switch 15 is activated as shown in FIG.
The lever portion 154a of No. 4 is pressed down, and its contact is switched to the position indicated by the broken line in FIG. 14a. Further, when the lever portion of the micro switch 154 is pressed down, the locking arm 151, which had hitherto been stopped by contacting the lever portion 154a, is moved from the window portion 154.
The lever portion 154a engages with the lever portion 1a, and rotates counterclockwise about the shaft 152. Due to the engagement portion between the lever portion 154a and the window portion 151a, the micro switch 154 is activated as shown in FIG.
The connection position of the dashed line is maintained. The state at this time is shown in FIG. On the other hand, in the motor control circuit shown in FIG. 14, the micro switch 154 is switched to the position indicated by the broken line, so that the relay X is deenergized and its contacts X ₁ and X ₂ are opened. and continues to be energized via the limit switch 108 which is in the on state. Further, when the micro switch 154 is placed in the broken line position, the relay Y is energized, and its contact _Y1 is switched to the broken line position.

Now, when a trip command is issued in this state, the main shaft 6 rotates counterclockwise around the main shaft pin 0610 due to the tripping operation of the operating mechanism of the switch, and the switch is shut off, as shown in FIG. The window 151 of the locking arm 151 is in the state shown in FIG.
a and the lever part of the micro switch 154 are engaged, so the micro switch 154 remains in the broken line position, the motor M continues to rotate, and the closing gear 104 further rotates clockwise around the shaft part 104b. be moved. Then, the protrusion of the pin 105a engages with the lever 107 and rotates it counterclockwise, and the end 107a pushes down the lever portion 108a of the limit switch 108 and rotates the locking arm 151 clockwise. .
When the locking arm 151 rotates clockwise from the state shown in FIG. 12, the lever portion 154a of the microswitch 154 disengages from the window 151a of the locking arm 151, and the microswitch 154 returns to the state shown in FIG. This is the solid line position of a. Also, at this time, the lever portion 108a of the limit switch 108 is
07, the motor M is deenergized and the closing gear 104 stops at the position shown in FIG.

At this time, even if the closing command switch S is in the on state, the relay Y is energized as described above and its contact _Y1 is connected to the position indicated by the broken line in Figure 14a, so the relay X is energized. The motor M is not energized.

Note that the above is a case where a trip command is issued immediately after the switch 1 is closed, but if there is no trip command, the micro switch 154 would be in the position shown by the broken line in Figure 14 a due to the closed state in Figure 11. Therefore, the motor M continues to be energized through the limit switch 108 which is in the on state, and the closing gear 104 further rotates from the position shown in FIG. and feeding roller 10
5 reaches the position indicated by the broken line in FIG.
7 and rotates it counterclockwise, pushing down the limit switch 108 and the locking arm 151. This opens the limit switch 108 and stops the motor M at that position. Further, the lever portion 154a of the micro switch 154 is opened from the window portion 151a of the locking arm 151, but is pressed down by the operating arm 159 and is at the position shown by the broken line in FIG. 14a.

Furthermore, the above operation of the operating rod 11 causes the main shaft 5 to
is rotated counterclockwise from the position shown in FIG. 9 to the position shown in FIG.
2 in the clockwise direction from the position shown in FIG. 9 to the state shown in FIG. 8. As a result, the end of the lock cam 129 engages with the pin 121a to lock the rotation of the handle shaft 34.

As a result of the above closing operation, the switch operating mechanism section is in the state shown in FIG. 2, the closing mechanism is in the state shown by the dashed line in FIG. 6, and the lock holding mechanism is in the state shown by the solid line in FIG. In this closed state, by trip operation, that is, by operating the trip latch 24 in the direction of arrow A using a trip signal, the switch operating mechanism section
The loading mechanism operates from the state shown in FIG. 2 to FIG. 3, the closing mechanism moves from the state shown by the dashed line in FIG. 6 to the state shown in FIG. 7, and the lock holding mechanism moves from the state shown in FIG. 8 to FIG. Form and wait for input signal.

By repeating this closing operation and tripping operation, the opening and closing operations of the vacuum switch shown in FIG. 1 can be performed.

Next, the operation of the control mechanism B for a feeding error will be explained. First, a closing error refers to a phenomenon in which the switch does not close even if a closing command is issued and the motor M is driven and a closing operation is performed in the cut-off state (Figures 3, 7, and 9). .

This control mechanism B is a mechanism for, when the above-mentioned input error occurs, to prevent the input error as shown in FIG. 1 and return to the cut-off state.

In Fig. 13, the motor M is driven by the closing command, the closing gear 104 rotates, and the state in which the closing is not made even though it is in the normal closing state is shown by the solid line, and the state in which a closing error is detected is shown by the dashed line. show. That is,
In the case of a loading error, the main shaft 6 does not rotate and the operating arm 159 does not engage with the micro switch 154 as shown in FIG. 6, so the micro switch 154 remains in the solid line position in FIG. Therefore, relay X continues to be energized, motor M continues to be energized through contact _X1 , and closing gear 104
However, according to the present invention, as the input gear 104 continues to rotate, the protrusion at the other end of the pin 105a comes into contact with the other end 157c of the operating lever 157. It is rotated counterclockwise about the shaft portion 157a, and is in the state shown by the dashed line. As a result, the operating lever 156 that comes into contact with the tip 157b of the operating lever 157 is rotated clockwise about the shaft 156a, and the end 156b operates the micro switch 154 to create a pseudo closed state. do. Therefore, in FIG. 14a, the micro switch 15
4 switches to the dashed line position, relay X is deenergized and contacts X ₁ and X ₂ are opened. When the limit switch 108 is opened by the engagement between the pin 105a and the operating lever 107 as described above, the motor M is stopped at that position. That is, even if a loading error occurs, the motor M will always stop at a predetermined position.

As described above, according to the switch control device according to the present invention, it is possible to reliably trip, close, and break the contacts of the switch with a simple configuration, and the switch can be operated by the closing command. This has the effect of providing a device that can reliably stop the charging mechanism at the next charging standby position after charging.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the opening/closing part of the switch, FIG. 2 is an explanatory diagram showing the first operating state (closing state) of an embodiment of the operating mechanism part of the switch according to the present invention, and FIG. FIG. 4 is an explanatory diagram showing the state during the second operation (blocking state), FIG. 4 is an explanatory diagram showing the state in the process of transitioning from the second operation state to the first operation state, and FIG. An exploded perspective view of a handle shaft operating mechanism of an embodiment for operating the handle shaft of the operating mechanism of the switch; FIG. 6 is an explanatory diagram showing the closing operation of the closing mechanism in the handle shaft operating mechanism; FIG. 7 is an explanatory diagram also showing the cut-off state, and FIG.
The figure is an operation explanatory diagram showing the closing operation of the lock holding mechanism in the handle shaft operating mechanism section, FIG. 9 is an explanatory diagram also showing the shut-off state, FIG. 10 is an exploded perspective view of the control mechanism section, and FIG. 11 is the above-mentioned An explanatory diagram of the operation showing the moment when the control mechanism A in the control mechanism unit is turned on; FIG. 12 is an explanatory diagram of the operation showing the trip-free state;
FIG. 13 is an operation explanatory diagram showing a closing error state and a pseudo closing state of the control mechanism B in the control mechanism section, and FIG. 14 is a circuit diagram showing an embodiment of the control circuit. 10...Housing, 11...Operation rod, 12...Crank pin, 13...Spring, 14...Spring, 21...
... Latch arm, 22 ... Fan-shaped lever, 23 ...
L-type latch, 24...Trip latch, 31...
Closing arm, 32... Closing link, 33... Closing lever, 34... Handle shaft, 41... Stopper, 1022-1024... Rotating shaft, 1121,
2122, 1131, 3132, 3233... Connecting pin, 2223, 2324... Roller, 111
2...Pin, 101...Handle shaft operation unit housing,
102... Bearing, 103... Energy storage cam, 104...
...Energy storage gear, 105...Energy storage roller, 106...
Drive gear, 107...Lever for limit switch operation, 108...Pin, 109...Lever support fitting, 110...Twist spring, 121...Latch arm, 122...Shaft, 123...Twist spring, 1
24...Latch fitting, 125...Twist spring, 1
26... Latch roller, 127... Shaft, 128...
...Operating arm, 129...Energy retention cam, 101
a, 101b, 101c... Housing of the handle shaft operating mechanism section, 102... Bearing for the handle shaft, 103
...Entering cam, 104...Entering gear, 105...
Feeding roller, 106... Drive gear, 107... Limit switch operating lever, 108... Limit switch, 121... Lock lever, 122...
... Lock lever shaft, 123 ... Lock lever twist spring, 129 ... Lock cam, 130 ...
Tension spring for handle shaft, 151...Lock arm, 152...Shaft, 153...Switch holding fitting, 154...Micro switch, 155...Twist spring, 156...Lever for operation, 157...
Operation lever, 158...Twist spring, 159...
...Operating arm. In the figures, the same reference numerals indicate the same parts.

Claims (1)

[Claims] 1. A crank pin connected to a movable contact of a switch and supported in a predetermined position when the switch is open, an operating rod having one end attached to the crank pin, and a crank pin that is engaged between both ends of the operating rod. a spring that biases the operation in a first direction with the crank pin supported at the predetermined position as a fulcrum; a locking mechanism that locks the operating rod in a biased state; a handle shaft that is connected to the other end of the operating rod via a link mechanism consisting of a charging arm, a charging link, and a charging lever and is driven by an electric motor; When the lever reaches a predetermined position, it engages with a portion of the closing link, and the biasing force of the stored spring causes the operating rod to move in the first direction with the connecting portion with the locking mechanism as a fulcrum. A locking stopper that allows rotation in a certain closing direction, and a locking stopper that releases the locking when the operating rod is locked to the locking mechanism and is in the closing state, and the operating rod is activated by the biasing force of the spring. a lock releasing part that allows the main shaft to be rotated in the closing direction using the connecting part with the link mechanism as a fulcrum; A first switch that is in an operating state, and a second switch that is excited when a closing command is given to form a first drive circuit for the motor and that is different from the first operating state.
A relay whose excitation is maintained via the first switch in the operating state, and is deenergized and cuts off the first drive circuit when the first switch enters the first operating state. Immediately after the electric motor starts operating, the second operating state changes to the first operating state, and the first switch changes to the first operating state, so that the first switch and the second drive circuit of the electric motor and a second switch that enters a second operating state and shuts off the second drive circuit when the closing mechanism is in a state of waiting for the next closing command. Device.