JPS6332818A - Working switch with power/phase detecting function - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Object of the Invention (Field of Industrial Application) The present invention relates to a construction switch with a voltage detection/phase detection function.

(Prior Art) Conventionally, for construction work on the distribution line, a distribution line is opened only in the construction section. In this case, a bypass circuit using a bypass cable is installed in place of the power distribution line in the construction section, and maintenance inspections or construction are performed without power outage in areas other than the construction section. Additionally, a construction switch is installed on this bypass circuit.

(Problem to be Solved by the Invention) In the above-mentioned construction switch, first, bypass cables on the power supply side and the consumer side are connected to the construction switch, and the bypass cables are roughly connected to the construction section. It is connected to the power distribution line at both ends.

Conventionally, each phase of the bypass cable on the power supply side and the bypass cable on the consumer side were matched by a phase detection device separate from the construction switch, which checked the phases of the cable terminals of each bypass cable one by one. After confirming this, the construction switch was turned on to form a bypass circuit. Therefore,
In order to prevent cables of different phases from being connected due to worker carelessness, sufficient care must be taken during phase detection work, and there are problems in that phase detection work for each phase is very troublesome and it takes time to form bypass circuits. Ta.

Structure of the Invention (Means for Solving the Problems) The present invention has been made to solve the above-mentioned problems. A phase detection device and a voltage detection device for the side cable are installed in the switch case, and a display section thereof is provided so as to be visible from the outside of the case. A locking member is provided that is located within the movement locus of the interlocking member and locks the closing operation, and the locking member uses the phase detection device and the voltage detection device to check whether each phase between the two cables matches and the energized state. A solenoid is connected which is energized only when the locking member is detected, and the energizing operation of the solenoid releases the locking state of the locking member, thereby making it possible to close the opening/closing portion.

Further, in the second invention, in addition to the configuration of the first invention, the excitation circuit of the solenoid that releases the locked state of the lock member is prohibited from being turned on so that it can be excited regardless of the detection state by the phase detection device and the voltage detection device. Equipped with a switchable lock release circuit.

(Function) In particular, the present invention incorporates a phase detection and voltage detection device inside the switch case, automatically performs each detection operation, and allows the operator to perform only the bypass cable connection operation based on the display of each detection operation. It is possible to easily and safely form a bypass circuit. Regarding each part, when the conductor parts in the power receiving and consumer bushings are energized by the configuration of the first invention, the detection status of the phase detection device and the voltage detection device is displayed on the display section, so that the operator can visually confirm it. Furthermore, when it was detected that the phases of each power receiving bushing and the corresponding customer bushing matched, and the energized state of the conductor in both bushings was detected, the closing operation of the opening/closing part was locked. The locked state is released and the opening/closing section becomes capable of closing operation.

Further, in the second aspect of the present invention, the opening/closing section is enabled to perform closing operation regardless of the detection state of the phase detection device or the voltage detection device by the closing prohibition lock release circuit, and can be used as a normal switch.

(Embodiment) An embodiment embodying the present invention will be described below with reference to FIGS. 1 to 7.

Cable terminals 3A, 3 of three-phase bypass cables 2A, 2B, 2C on the power supply side are installed at the front upper end of the switch main body case 1.
B, three-phase power receiving bushing 2a to which 3G is connected,
2b and 2c are provided in order from the left side, passing through the inside and outside of the case 1. Bushings for customers 4a, 4b, 4c
are provided below the respective power receiving bushings 2a, 2b, 2c, and bypass cables 4A, 4 on the consumer side.
Cable terminals 5Δ, 5B, and 5C of B and 4C are connectably provided.

Further, below the consumer bushings 4a, 4b, and 4c, there is a consumer bushing 5a configured similarly to the consumer bushings 4a, 4b, and 4C.

6b and 6c are provided, and the cable terminal 5A.

58.50 can be connected. Further, on the lower side of the customer bushings 6a, '6b, 6c, there are transformer car bushings 7a, 7b, 7c and a transformer car bushing 8.
A, 8b, and 3c are provided in upper and lower stages, and it is possible to supply power to consumers via a transformer type vehicle.

On the inner surface of the rear side wall of the case 1, transformer car bushings 7a, 7b, 7c and transformer car bushings 8a, 8 whose phases correspond to the power receiving bushings 2a, 2b, 2c.
The center conductors (not shown) of each phase b and F3c are electrically connected within the case 1 by three conductors 12.

In addition, each of the bushings 2a, 2b, 2c, 4a, 4b
, 40, etc., a protective cap 14 is screwed onto the outer end of each of the bushings 2a, 2b, 2G.

4a, 4b, 4c, etc. and exposure of charged parts.

In addition, in the case 1, bushings 4a, 4 for each customer
b, 4c and consumer bushing 6a.

A load side fixed electrode consisting of a fixed electrode 18 and an arc extinguishing chamber 23 is provided at the inner ends of 6b and 6c, and a fixed electrode 15 and an arc extinguishing chamber 22 are provided at the rear inside the case 1 corresponding to these load side fixed electrodes. The fixed electrodes 15 of the power supply side fixed electrodes are each connected to the conductor 12.

A substantially S-shaped movable contact blade 21 fixed to a movable insulator 20 rotationally driven by a drive shaft 19 is disposed at an intermediate portion between the fixed electrode 15 and the fixed electrode 18.
When the movable insulator 20 is rotated, both ends of the caustic contact blade 21 can be inserted into and removed from the fixed electrodes 15 and 18, respectively. Said fixed electrode 15.18. Drive shaft 19. Movable insulator 20. Movable contact blade 21. The arc extinguishing chambers 22 and 23 constitute an opening/closing section S1.

Note that the customer bushings 6a, 6b, and 6C are also provided with a fixed electrode and an arc extinguishing chamber (not shown) similar to the fixed electrode 18, and a movable contact blade (not shown) is provided with respect to the fixed electrode. It is arranged so that it can be inserted and removed, and the opening/closing part S
An opening/closing section S2 similar to that of 1 is configured.

A pair of upper and lower handle shafts 28 are provided on the right side wall of the main body case 1 above the drive shaft 19 and pass through the inside and outside of the main case 1, and are detachably attached to the outer end of the handle shaft 28. When an operation handle (not shown) is rotated in the vertical direction, the movable contact blade 21 of each opening/closing part 81, 82 is opened/closed via an opening/closing operation mechanism S to be described later.
etc. can be driven in and out respectively. In front of the main body case 1 on the right side of the consumer bushing 4C and the consumer bushing 6C provided at the right end, there are voltage detecting devices 30a and 30b built in the main body case 1 and display units 32 and 33 of the phase detecting device 31. is provided so as to be visible from the outside of the case 1.

The upper part of the display section 32 is blue from the left.

White, red tricolor l'lti indication 140B, 40W, 40R
are provided corresponding to the power receiving bushings 2a, 2b, and 2G, respectively.

The blue I! A red digit display ff141R and a white phase display light 42W are provided below the electric indicator light 40B. Further, below the white charging display ff140W, a blue digit display ff141B and a red digit display 142R are provided.

Further, below the red charging display ff140R, a white digit display 141W and a blue digit display 142B are provided.

Further, below the digit displays ff142W, 42R, and 42B, there are power indicator lights 438.43W in three colors of blue, white, and red corresponding to the customer bushings 4a, 4b, and 4c, respectively.
43R is provided.

In addition, the three-color i11 electric indicator light is 438.43W.

Further below 43R is a warning buzzer 45. No-voltage opening/closing test switch 46. A test switch 47 is provided. Further, in the upper right corner of the main body case 1 above the display section 32, there is a power switch 49 and a three-phase/single-phase changeover switch 5.
0 is set.

Note that the display section 33 includes the customer bushing 6a,
The display portions 6b and 6c are configured similarly to the display portion 32. Further, on the front surface of the main body case 1, cable attachment/detachment prohibition display portions 34 to 38 are respectively provided on the left side of the power receiving bushing 2a, consumer bushings 4a, 6a, and transformer car bushings 7a, 8a.

Furthermore, in the lower right corner of the main body case 1 is a forced lock release switch 53 that turns ON/OFF the lock release circuit 52 that prohibits insertion.
A cap 54 is screwably provided in a cap recess provided around the forced lock release switch 53. The warning buzzer 45 is electrically connected to the input prohibition lock release circuit 52.

Next, each opening/closing part 31.8 built into the right side of the main body case 1
The opening/closing operation mechanism S of No. 2 will be explained. In addition, since both opening/closing operation mechanisms S have the same configuration, the opening/closing part S1
The opening/closing operation mechanism S will be explained.

An interlocking member 55 is fixed to the handle shaft 28 and extends vertically around the handle shaft 28.

A lock bin 56 is provided at the upper end of the interlocking part IJ55. Further, a support shaft 57 is protruded from the lock bin 56 at a position slightly closer to the handle shaft 28.
This interlocking member 5 is connected via a drive link 60 etc. connected to
5 is transmitted to the drive shaft 19.

Further, a bottle 59 is protruded from the lower end of the interlocking member 55.

A bolt 61 fixed to the main body case 1 comes into contact with the rear side of the upper end of the interlocking member 55, thereby restricting the rotation of the interlocking member 55 in the clockwise direction when the interlocking member 55 is opened.

A proximal end portion of a locking member 62 whose distal end side is curved downward into an arc shape is pivotally supported by the shaft 63 .

The locking member 62 is biased downward (clockwise) by a twist coil spring 64 wound around the shaft 63, and a locking portion 65 provided at the lower center of the locking member 62
The lock bin 56 abuts and locks at the rear position of the holder. The locking portion 65 is connected to the interlocking member 5.
When the lock bin 5 is rotated in the closing direction, the lock bin 56 is placed within the locus of movement of the lock bin 56, and the lower surface of the locking part 65 is formed in a slightly oblique shape to form a free opening cam part 65a. Further, a bottle 67 is provided protruding from the tip of the locking member 62.

A long hole 71 is provided at the tip of a lock release lever 70 whose base end 69 is pivotally supported with respect to the main body case 1 by a shaft 68.
The pin 67 of the locking member 83 is inserted into the elongated hole 71 . A long hole 72 is provided in the center of the lock lever 70 at a position slightly closer to the proximal end. A solenoid 7 is located on the inner surface of the right side wall of the main body case 1 above the lock lever 70.
3 is fixedly installed, and a pin 75 protruding from the lower end of the plunger 1774 is inserted through and engaged with the elongated hole 72 of the lock lever 70.

Therefore, when the solenoid 73 is energized, the plunger 74 is attracted upward, thereby rotating the tip of the lock release lever 7o upward.

As a result, the locking member 62 is rotated upward against the elasticity of the twist coil spring 64, and the forward locking of the lock bin 56 by the locking portion 65 is released.

Note that a bolt 75 fixed to the main body case 1 is arranged below the elongated hole 72, and the bolt 75 is fixed to the main body case 1.
The downward rotation of the lock release lever 70 is restricted by contacting the lock release lever 70 downward.

A limit switch 77 as an auxiliary contact is fixed to the main body case 1 at the rear of the handle shaft 28, and the tip of an actuator 78 protruding forward thereof rotates in the closing direction (counterclockwise direction) of the handle shaft 28. When it is bent, it is hooked onto a pin 59 provided on the interlocking member 55 and bent upward. The limit switch 77 turns off the excitation circuit of the renoid 73 when the actuator 78 is bent upward.

Next, the electrical configuration of this construction switch will be explained according to FIG.

Bypass cable 2A on the power supply side to the distribution line.

A detection capacitor C1 is connected to each of the three-phase power receiving bushings 2a, 2b, and 2C connected via 2B and 2C.
are arranged correspondingly, and the capacitor C1 is connected to the voltage detection level determining section 79 of the voltage detection device 30a. Then, the voltage detection level determination unit 79
, 2c, the voltage level determining unit 79 detects the power receiving state of the phase in the energized state behind each of the energizing displays m40B, 40W, and 40R provided on the display unit 32 (33). The charging indicator lights 40B, 40W, and 40R corresponding to the bushings 2a, 2b, and 2C are turned on.

Similarly to the above, three-phase consumer bushings 4a, 4b, 4c (6a, 6b, 6C) are connected to the power distribution line via consumer-side bypass cables 4A, 4B, and 4C.
A detection capacitor C2 is arranged correspondingly to the detection capacitor C2, and the capacitor C2 is connected to the voltage detection level determining section 80 of the voltage detection device 30b.

When the voltage detection level determination unit B580 detects the energized state of the conductor portion of each consumer bushing 4a, 4b, 4c (6a, 6b, 6c), the voltage detection level determination unit 80 is installed in the display unit 32. Each charging indicator light 43B, 43W,
Among the 43R, customer bushings 4a, 4b, 4c (6a) of the phase in which power is applied.

Charge indicator lights 43B, 43W, 4 corresponding to 6b, 6c)
Turn on 3R.

X point between each of the capacitors C1 and the voltage detection level determination section 79, and the point X between each of the capacitors C2 and the voltage detection level determination section 8
The Y points between the phase detection device 31 and the phase detection circuit 81 are connected to the input terminals x1 and Yl provided in the phase detection discrimination circuit 81 of the phase detection device 31, respectively.

The phase detection discrimination circuit 81 discriminates the phase of the input signal from the detection capacitor C2 based on the input signal from the detection capacitor C1. Further, the phase detection discrimination circuit 81 uses the phase display ff141B, 41W, 41R, 428, 42W, 4
2R, and predetermined phase indicator lights 41B, 41W, 41R, 42B, 4 based on the determination result.
2W and 42R are blinking.

The phase detection determination circuit 81 and the closing prohibition lock release circuit 5
2 through an AND circuit 82. The closing prohibition lock release circuit 52 is connected to a three-phase/single-phase discrimination circuit 83 connected to the three-phase/single-phase changeover switch 50, the no-voltage opening/closing test switch 46, and the forced lock release switch 53.

After turning on the power switch 49, the display section 3
When the test switch 47 provided in 2 (33) is turned on, the power charging display shows 40B, 40W, 40R, 43B,
43W and 43R are lit, and the phase indicator lights 41B and 41W are lit.
, 41R, 42B.

42W and 42R flash, the warning buzzer 45 sounds continuously, and the cable attachment/detachment prohibition display section 34.37°35.36
(34, 38, 35, 36) are illuminated to enable tests to determine the normal operation of phase detection, voltage detection devices, and the like.

The phase detection discrimination circuit 81. Phase display ff141B, 41W,
41R, 428, 42W, 42R and the three-phase/single-phase discrimination circuit 83 constitute the phase detection device 31.

0N-OF in conjunction with closing and opening of the movable contact blade 21
The limit switch 77 which is F is connected to both the OR circuits 84.
Cable attachment/detachment prohibited display section 34, 35, 36 via 85
．． When connected to 37 (38) and turned ON, the same O
A signal corresponding to a logical value of 1 is applied from the power supply section 86 to the R circuits 84 and 85.

The electricity detection level determination section 79 and the electricity charging display ff140B.

A point provided between 40W and 40R and the cable attachment/detachment prohibition display section 34, 35, 36 are connected via an OR circuit 84. Further, the one point and the input prohibition lock release circuit 52 are connected via the AND circuit 82.

The electricity detection level determination unit 80 and the electricity charging display ff143B.

Point G provided between 43W and 43R is connected to the cable attachment/detachment prohibition display section 37 (38) via an OR circuit 85. Furthermore, the G point and the closing prohibition lock release circuit 5
2 through the AND circuit 82. Further, the solenoid 73 is connected to the closing prohibition lock release circuit 5.
Connected to 2.

Now, the operation of the construction switch with voltage detection and phase detection functions configured as described above will be explained.

First, as shown in Figure 1, when installing a bypass circuit at both ends of a construction section on a given three-phase distribution line,
A bypass circuit with an open construction switch is installed alongside the distribution line, and the construction switch is inserted and the distribution line switch T is installed.
1. By opening T2, the construction section is brought into a power outage state, and the other parts are brought into an uninterrupted state. To explain the formation of a bypass circuit with the construction switch of the present invention, the handle shaft of the switch of the present invention An operating handle is attached to the outer end of the opening/closing portion S1, and the movable contact blade 21 of the opening/closing portion S1 is opened as shown in FIG. When the movable contact blade 21 is in the open state, the lock pin 56 of the interlocking member 55 fixed to the handle shaft 28 comes into contact with the locking portion 65 of the lock member 62, and is locked in a state in which the closing operation is disabled. Further, the three-phase/single-phase changeover switch 50 is set to three-phase.

Next, the power switch 49 of the construction switch is turned on, and the test switch 47 is used to perform a test to determine the normal operation of the phase detection, voltage detection device, etc.

Next, bypass cables 2A and 2B on the power supply side.

Connect cable terminals 3A, 38.3G of 2C to power receiving bushings 2a, 2b, 2C, and connect cable terminals 5A, 5B of bypass cables 4A, 4B, 4G on the consumer side.
, 5C as consumer bushings 4a, 4b, 4c (6a
, 6b, 6c).

And the bypass cable 2A on the power supply side.

The other ends of 2B and 2C are connected to the distribution line on the power supply side as shown in FIG. Then, the voltage level determination unit 79 detects the power receiving bushing 2a via the detection capacitor C1.
, 2b, and 2C are detected, and the respective charging indicator lights 40B, 40W, and 40R are turned on. Further, the voltage detection level determination unit 79 applies a signal corresponding to the logical value 1 to the AND circuit 82 and the OR circuit 84, and lights up the cable attachment/detachment prohibition display units 34, 35, and 36.

Next, the consumer side bypass cable 4A.

The other ends of 4B and 4C are connected to the power distribution line on the customer side as shown in FIG. Then, the voltage detection level determination section 80
is the consumer's 7y signal via the detection capacitor c2.
4a, 4b, 4c (6a, 6b.

6c) Detects the 81 electricity state of the conductor part and turns on each electricity indicator light 4.
38. Turn on 43W and 43R. Further, the voltage detection level determination unit 80 applies a signal corresponding to the logical value 1 to the AND circuit 82 and the OR circuit 85, and displays the τ scale attachment/detachment prohibition display unit 37 (
38) lights up.

The phase detection discrimination circuit 81 is a power receiving bushing 2a.

Bypass cable 2 on the power supply side connected to 2b and 2c sides
A, 2B, 2C phases and consumer bushings 4a, 4b,
4c (6a, 6b, 6c)k: Distinguishes the phases of the connected bypass cables 4A, 4B, and 4C on the consumer side, and when the corresponding phases do not match, a predetermined phase indicator light 4
Light up 1R, 41B, 41W, 42W, 42R, 42B.

For example, the phase detection discrimination circuit 81 uses the power charging display ff140B.
The phase of the bypass cable 2A on the power supply side connected to the power receiving bushing 2a corresponding to and the vR power display ff143B
The phase of the bypass cable 4A on the customer side connected to the customer bushing 4a (6a) corresponding to the customer side does not match,
When it is determined that the phase connected to the consumer bushing 4a (6a) is the same as the phase of the power receiving bushing 2b, the phase indicator light 42W is blinked.

Similarly, the phase detection discrimination circuit 81 is connected to the energized indicator light 710B.
The phase of the power supply side bypass cable 2A connected to the power receiving bushing 2a corresponding to If they do not match and it is determined that the phase connected to the consumer bushing 4a (6a) is the same as the phase of the power receiving bushing 2C, the phase indicator light 41R is blinked.

Similarly, the phase detection determination circuit 81 is connected to the consumer bushing 4.
The phase connected to b (6b) is power receiving bushing 2C
If it is determined that the phase is the same as that of the power receiving bushing 2a, the digit display [42R] will blink, and if it is determined that the phase connected to the customer bushing 4b (6b) is the same as the phase of the power receiving bushing 2a, the phase indicator light 41B will blink. do.

Similarly, the phase detection discrimination circuit 81 is connected to the consumer bushing 4.
The phase connected to C (6C) is the power receiving bushing 2a
If it is determined that the phase is the same as the phase of the power receiving bushing 2b, the phase display 142B will blink, and if it is determined that the phase connected to the customer bushing 4C (6C) is the same as the phase of the power receiving bushing 2b, the digit display will blink 41W. do.

Therefore, the operator should check the display section 32 (33
) and look at the blinking phase indicator light 418, etc., you can easily determine which consumer bushing 4a (6a) etc. should be connected to the bypass cable 4A, etc. on the consumer side. A bypass circuit can be safely formed without using a phase detector or the like.

In addition, when the phases of the corresponding bushings are different from each other, the phase detection discrimination circuit 81 applies a signal corresponding to the logical value O to the AND circuit 82, sounds the warning buzzer 45, and locks the closing prohibition lock. The opening/closing operation mechanism S remains locked without driving the release circuit 52.

Unlike each of the above cases, each power receiving bushing 2a, 2b
Bypass cables 2A, 2 on the power supply side connected to , 2c
Bushings 4a, 4b for each customer corresponding to B, 2C,
4c (6a, 6b, 6c) and the power source side bypass cables 4A, 4B, and 4C, when the phase detection discrimination circuit 81 determines that the corresponding phases match correctly, the phase detection discrimination circuit 81 is digit display ff141B, 4
1W.

41R, 42B, 42W, and 42R are not driven to blink, and output a signal corresponding to the logical value 1 to the AND circuit 82.

And bypass cables 2A and 2B on the power supply side.

2C and consumer side bypass cables 4A and 4B.

4C is correctly connected, the AND circuit 82 includes the phase detection determination circuit 81, the voltage detection level determination section 79. The closing prohibition lock release circuit 52 is operated based on the signal corresponding to the logical value 1 from the voltage detection level determining section 80, and the solenoid 73 is energized.

Then, the plunger 74 of the solenoid 73 is driven upward, as shown in FIG.
8 is driven upwards. Then, the lock member 62
is driven upward about the shaft 63 against the elasticity of the twist coil spring 64 from the state shown by the imaginary line, and the lock is released.

In this unlocked state, the locking portion 65 of the locking member 62 is avoided upward, so the front of the locking pin 56 (the seventh
It becomes possible to move to the left (in the figure). When the handle shaft 28 to which the operating handle is attached is operated from the state shown in FIG. 7, the interlocking member 55 is rotated.

Then, the drive shaft 19 is rotated via the drive link 60, and both ends of the movable contact blade 21 are inserted into the fixed electrode 15.degree. 18, thereby forming a bypass circuit.

On the other hand, when the interlocking member 55 rotates counterclockwise, the bottle 59 moves toward the actuator 7 of the limit switch 77.
8 is bent upward to turn on the limit switch 77 and turn off the excitation circuit of the solenoid 73. Therefore, the locking member 62 returns downward again due to the elasticity of the twist coil spring 64.

Conversely, when opening the movable contact blade 21 in the closed state again, the handle shaft 28 is moved to the seventh position via the operating handle.
Rotate in the clockwise direction shown in the figure. Then, the interlocking member 55 is rotationally driven in the opposite direction to that described above, and as a result, the drive shaft 19 is driven counterclockwise. Therefore, the movable contact blade 21 is opened again.

By this rotation of the interlocking member 55, the lock pin 56 of the interlocking member 55 is opened to the open free cam portion 6 provided on the lower surface of the locking portion 65.
5. Twist the locking member 62 by touching the coil spring 6
4, and is configured to be able to be freely opened regardless of the locking configuration of the locking member 62 at the time of insertion.

After the opening operation, the lock member 62 returns to the rear position of the locking portion 65 shown in FIG.

Roughly speaking, in the construction switch, when the forced lock release switch 53 is turned on in an emergency, the closing prohibition lock release circuit 52 releases the excitation of the solenoid 73 based on the ON signal. Then, since the solenoid 73 can be driven upward regardless of the detection states of the voltage detection devices 30a, 30b and the phase detection device 31, the movable contact blade 21 can be opened and closed at will by rotating the handle shaft 28.

In the construction switch, each bushing 2a, 2b
, 2c, 4a, etc. When the voltage detection level determination unit 79.80 detects the energized status of each bypass cable 2A, 2B, 2G, 4A, etc. connected to the cable @ disconnection via the OR circuit 84.85. Since the prohibition display 34, 35, 36, etc. will be lit, the operator must
It can be known that the conductor portions such as C and 48 are in the energized state, and the bypass cables 2A and 2B are in the energized state.

It is safe as there is no risk of accidentally removing the 20.4A etc.

In this way, each phase display 14''IB, 41W.

Based on the indications of 41R, 42B, 42W, and 42R, the narrow ends of the bypass cables 4A, 4B, and 4G on each consumer side can be connected to the correct distribution line, and if there is a mistake in connection, a warning will be issued one after another. Since the buzzer 45 sounds, the phase indicator lights 418, 41W, 41R, 42
Even if you miss the flashing of B, etc., you can easily notice it.

(Second Embodiment) Next, a second embodiment embodying the present invention will be described with reference to FIGS. 8 and 9 only with respect to the interlocking member, locking member, release free cam portion, etc. that are different from the first embodiment.

In this embodiment, as shown in FIG.
A disk-shaped interlocking member 91 is fixed to the interlocking member 9.
1 further has a rectangular locking piece 92 protruding from the upper end thereof. A locking member 93 is attached to a pair of fixing members 9 in the switch main body case 1 in front of the interlocking member 91.
It is rotatably supported by a shaft 95 installed between the two. This locking member 93 is formed in a reverse channel shape, and has a groove 93a as an open free cam portion on its lower end surface. The groove portion 93a
is brought into sliding contact with the outer peripheral surface of the interlocking member 91. Therefore, the rear end surface of the locking member 93 is disposed within the movement locus of the locking piece 92, and the locking member 93
The rear end surface of 3 comes into contact with the front end surface of the lock piece 92, and locks the rotation of the handle shaft 28 in the closing direction (counterclockwise direction indicated by the arrow in FIGS. 8 and 9). ing.

A lock release lever 97 is provided at the center of the lock member 93.
The lower end of the lock release lever 97 is connected via a shaft pin 98, and the lower end of a plunger 100 of a solenoid 99 fixed to the main body case 1 is connected to the -F end of the lock release lever 97.

Similarly to the first embodiment, the solenoid 99 is connected to the closing prohibition lock release circuit 52, and is energized in a predetermined case to open the rear end side of the locking member 93 as shown in FIG. The lock member 93 is driven upward against the elasticity of the coil spring 96 to release the rear end surface of the lock member 93 from the front end surface of the lock piece 92.

Therefore, as shown by the imaginary line in FIG. 9, the handle shaft 28 is rotated counterclockwise to insert the movable contact blade 21, and the lock piece 92 is disposed below the groove 93a of the lock member 93. After that, even if the excitation circuit of the solenoid 99 is turned off and the locking member 93 returns downward, when the interlocking member 91 is rotated clockwise, the locking piece 92 slides against the lower surface of the groove 93a. lock member 93
By pushing upward, the state shown in FIG. 8 is restored.

Then, the rear end side of the lock member 93 returns downward by the coiled spring 96, and the rear end surface of the lock member 93 locks the front end surface of the lock piece 92 again.

Therefore, in this embodiment, it is possible to provide a locking mechanism for the opening/closing portion with a simple structure.

(Third Embodiment) Next, regarding a third embodiment embodying the present invention, only the interlocking members, locking members, etc. that are different from the first embodiment will be described.
This will be explained according to FIGS. 0 to 13.

In this embodiment, as shown in FIG. 10, a locking plate 111 in the shape of a rectangular plate is provided at the tip of an interlocking member 110 that is operated in the direction of arrow P or arrow Q in conjunction with manual opening/closing operation. A fitting hole 111a is transparently provided in the lock plate 111. And l? A solenoid 112 is provided on the side surface of the ffrA main body case 1, and the solenoid 112 is connected to the opening/closing part S1. The lock plate 1 when S2 is in the open state
11.

A lock pin 114 as a lock member is provided at the tip of the plunger 113 of the solenoid 112, and when the solenoid 112 is in a non-energized state, the lock pin 11
The tip portion 115 of No. 4 is inserted into the fitting hole 111a.

Therefore, in the state in which the tip end 115 of the lock bin 114 is engaged with the fitting hole 111a, the interlocking member 110
The drive in the input direction (direction of arrow P) is locked.

Reference numeral 116 denotes a support member through which the center portion of the lock pin 114 is inserted and slidably supports the lock pin 114, and a driving force is applied to the interlocking member 110 while the lock pin 114 is movably supported. Lock Bin 1
14 is designed to prevent it from being bent.

Roughly speaking, the tip of the plunger 113 and the support member 11
Both ends of a compression spring 117 are hung between the solenoid 112 and the lock pin 114, so that the lock pin 114 is always urged to fit into the fitting hole 111a when the solenoid 112 is in a non-energized state.

Similarly to the first embodiment, the solenoid 112 is connected to the closing prohibition lock release circuit 52, and is energized in a predetermined case to cause the lock bin 114 to move due to the elasticity of the compression spring 117, as shown in FIG. The tip part 115 of the lock bin 114 releases the lock against the fitting 7L111a, and
It is arranged to deviate from the movement trajectory of the interlocking member 110.

Now, to explain the opening operation in this embodiment, the opening rotation operation of the handle shaft 28 (Q
The interlocking member 110 rotates in the direction of the arrow), and the tip plate 111 of the interlocking member 110 rotates as shown in FIG. 13(a).
From the state shown in FIG. 13(b), a diagonal portion 111 is provided on the back surface of the lower end portion 111C of the lock plate 111.
b is the oblique part 1 provided at the tip 115 of the lock bin 114;
15a, and as the interlocking member 110 rotates, the lock bin 114 is pushed into the support member 116 against the biasing force of the compression spring 117, and the interlocking member 1
10 is rotated, as shown in FIG.
4, the lock pin 114 engages in the fitting hole 111a by the biasing force of the compression spring 117, and the interlocking member 110
The rotation is locked and the state shown in FIG. 11 is restored. The opening/closing portion can be changed from the closed state to the open state by rotating the handle shaft 28 shown in FIGS. 13(a) to 13(C).

Therefore, in this embodiment, it is possible to provide a locking mechanism for the opening/closing portion that has a simple structure and is reliable.

Note that the present invention is not limited to the embodiment described above, and as shown in FIG. 14, a switching section 83. Any changes may be made without departing from the spirit of the invention, such as implementing it in the construction switch configured in S4.

Effects of the Invention As detailed above, in this construction interval switch with voltage detection and phase detection functions, since the switch itself has a voltage detection device and a phase detection device, there is no need for separate equipment related to these devices. ,
In the first invention, the voltage detection and phase detection display parts, the cable connection/detaching prohibition display part, and each cable connection part are arranged on the same front surface of the switch main body case, which improves workability. When power is applied to the power receiving and consumer bushings by the power supply and consumer side cables connected to the bushings, the detection status of the phase detection device and voltage detection device is displayed on the display, so the construction Both cables can be connected correctly to the switch, and the operator can safely and easily carry out phase detection work by following the display provided on the switch, thereby greatly reducing work time.

Furthermore, only when the phase matching between each power receiving bushing and the corresponding consumer bushing and the energized state of both bushings are detected, the switching member is positioned within the movement trajectory of the interlocking member and the opening/closing part is closed. The locked state of the locking member that had been locked irreversibly is released by the excitation operation of the solenoid, and the opening/closing part can be operated to close, even though both cables are not properly connected to the construction switch. This prevents the danger of closing the opening/closing part without realizing it.

Furthermore, in the second invention, the excitation circuit of the solenoid releases the locked state of the locking member by switching the closing prohibition lock release circuit and excitation, and the opening/closing portion is configured to be connected to the phase detection device or the voltage detection device. Since it is possible to make the closing operation regardless of the detection state of play.

[Brief explanation of drawings]

Figures 1 to 7 show the first embodiment, Figure 1 is an electric circuit diagram showing the wiring state of the construction switch, Figure 2 is a cutaway side view of the main parts of the construction switch, and Figure 3 Figure 4 is a front view of the entire construction switch, Figure 4 is a front view showing the display parts of the phase detection device and voltage detection device, and Figure 5 is the opening/closing operation mechanism S showing the open state of the opening/closing part.
FIG. 6 is a block circuit diagram of the phase detection device and voltage detection device, etc. FIG. 7 is a diagram showing the opening/closing operation mechanism S and the locking member showing the closing state of the opening/closing part, FIG. Fig. 9 shows the second embodiment, Fig. 8 shows the locking member in the locked state, Fig. 9 shows the locking member in the unlocked state, and Fig. 10 shows the third embodiment. FIG. 11 is a side view of the interlocking member as shown in FIG. FIGS. 13(a), (b), and (c) are operation explanatory diagrams showing the third embodiment without showing the engagement between the lock pin and the interlocking member during opening, and FIG. 14 is an illustration showing gas opening/closing separately. It is a figure showing the switch for construction using the container. Switch case 1, power receiving bushings 2a, 2b. 2C1 power supply side cable 2A, 28.2C1 customer bushing 4a, 4b, 4c, 6a, 6b, 6C1 voltage detection equipment f
ffi30a, 30b, phase detection device 31, display units 32, 3
3. Interlocking member 55.91, 110, locking member 62.9
3,114, solenoid 73°99.112, closing prohibition lock release circuit 52, opening/closing part 31.82. S3. S4゜Patent applicant Chubu Electric Power Co., Ltd. Takamatsu Electric Manufacturing Co., Ltd. Figure 14

Claims (1)

[Scope of Claims] 1. In a construction switch provided with a manually operated opening/closing part between a power receiving bushing and a customer bushing, a phase detection device for power supply side and customer side cables connected to both said bushings. A voltage detection device is installed in the switch case, and its display section is provided so that it can be viewed from outside the case, and the interlocking member operated by the manual opening/closing operation is always within the movement trajectory of the interlocking member. A locking member is disposed located at the position and locking the closing operation, and the locking member is installed only when the phase detection device and the voltage detection device detect the coincidence of each phase and the energized state between the two cables. A construction opening/closing device with an electric power detection/phase detection function, characterized in that the closing operation of the opening/closing part is enabled by connecting excited solenoids and releasing the locked state of the locking member by the energizing operation of the solenoid. vessel. 2. Claim 1, characterized in that the locking member is provided with an opening free cam portion that can perform an opening operation even when the locking member is in the closing lock position inserted into the movement trajectory of the moving member. Construction switch with voltage detection and phase detection functions as described. 3. In a construction switch equipped with a manually operated opening/closing part between the power receiving bushing and the consumer bushing, the phase detection device and voltage detection device for the power supply side and consumer side cables connected to both bushings are opened and closed. The interlocking member operated by the manual opening/closing operation is always located within the movement trajectory of the interlocking member and disables the closing operation. A locking member is provided, and the locking member is connected to a solenoid that is energized only when the phase detection device and the voltage detection device detect the matching of each phase and the energized state between the two cables. The locking member is configured to be able to release the locked state by the excitation operation of the solenoid, and a closing prohibition lock release circuit that enables excitation regardless of the detection state is switchably attached to the excitation circuit of the solenoid. A construction switch with features of voltage detection and phase detection functions.