JPH0316187Y2 - - Google Patents

Description

[Detailed Description of the Invention] A. Purpose of the Invention A-1. Field of Industrial Application The present invention relates to an improvement of an operating device for an automatic switch used for sectional switching in high-voltage distribution lines.

A-2 Prior Art Automatic switches are used to switch sections of high-voltage distribution lines. An automatic switch is an automatic opening/closing mechanism that can automatically open and close circuits by remote control using a solenoid, and a mechanism that can automatically open and close circuits by remote control using a solenoid. Since the electromagnetic solenoid may not be able to open and close the circuit in the field, the automatic opening and closing mechanism is equipped with a manual opening and closing mechanism that allows the circuit to be opened and closed manually using a separate operating handle. It is. In such automatic switches,
The automatic opening spring is compressed during automatic closing, and the stored force of the automatic opening spring is released during automatic opening to ensure opening and increase the opening speed. This is compressed using a spring, and the stored force for opening is released when manually opening.

A-3 Problems to be Solved by the Present Invention However, in the operating mechanism of the conventional automatic switch, when manually opening, the stored force of the automatic opening spring directly rotates the opening/closing shaft of the movable electrode. However, since the switch does not act effectively and in a timely manner, there is a problem in that the opening speed of the switch decreases, and furthermore, it becomes impossible to open the switch.

B. Structure of the invention B-1. Means for solving the problems The present invention is intended to solve the above problems, and consists of an electromagnetic solenoid and an opening/closing axis of a movable electrode that is moved in the closing direction by excitation of the electromagnetic solenoid. An automatic link mechanism that rotates automatically in the closing direction and rotates the opening/closing shaft of the movable electrode in the opening direction by demagnetization; an automatic operating mechanism comprising an automatic opening spring that stores force; a manual operating handle; a manual link mechanism that rotates the opening/closing shaft of the movable electrode to open and close by opening and closing the manual operating handle; and a manual operating handle. a compression means for compressing the automatic opening spring so that a force for opening is accumulated therein by the closing operation of the automatic opening spring; a holding means for maintaining the automatic opening spring in a compressed state; and the manual operation. a manual operation mechanism comprising a release means for releasing the holding state of the holding means in connection with the operation of the manual link mechanism immediately before the movable electrode is separated from the fixed electrode during rotation of the handle in the opening direction; It is characterized by having the following.

RO-2 Embodiment Hereinafter, an embodiment of the present invention will be described based on FIGS. 1 to 8.

First, the configuration of the automatic operation mechanism will be described.

In Fig. 1, reference numeral 1 denotes an operating mechanism installed on the side of the main body case (not shown) of the switch. It is housed in 3. 4 is a reinforcing frame in which both frames 2, 2 are connected by screws 5; 6 is a reinforcing frame in which both frames 2 are connected;
This electromagnetic solenoid is interposed between the frames 2, 2, and is located at the lower center of the frames, and is integrally attached to the frames 2, 2. The solenoid 6 is interposed between two mounting plates 7, 7 attached between both frames 2, 2, and supported by bolts 8 and nuts 9 that connect the mounting plates 7, 7. There is. The electromagnetic solenoid 6 and the mounting plate 7 on the right side in FIG. 1 are connected by a plunger receiving fitting (not shown). Reference numeral 10 denotes an electromagnetic solenoid plunger that slides laterally so as to move forward and backward. Reference numeral 11 is a rotary shaft located at the lower left in FIG. The sides are bent upwards. 14 is a plunger link, one end of which is rotatably connected to the tip of the plunger 10 via a shaft 13, and the other end is connected to the upper end of the first lever 12 with a shaft 15.
are rotatably connected via. Reference numeral 16 denotes a second lever whose base end side is integrally fixed to the rotating shaft 11. Reference numeral 17 denotes an opening/closing shaft located at the upper left side of the center in the drawing and rotatably provided between the frames 2, 2, and the side of the shaft toward the back of the paper is located inside the main body case (not shown). It is connected to a movable electrode (not shown). still,
As is well known, the movable electrode is connected to and removed from a fixed electrode (not shown) to open and close the wiring circuit. 18 connects the base end to the opening/closing shaft 1
A substantially equilateral triangular opening/closing shaft lever is integrally fixed to the lever 18, and the left end of the lever 18 and the end side of the second lever 16 are connected to the shaft 20 by a first link 19.
They are rotatably connected via a and 20b.
21 is located on the upper right side in FIG.
2 is a rotatable manual shaft, and 22 is an interlocking link, the right side of which is rotatably connected via a pin 25 to the distal end side of a manual shaft first lever 23 that is integrally fixed to the manual shaft 21. A long hole 26 is formed on the left side, and the opening/closing shaft lever 18 is inserted into the long hole 26.
A pin 24 provided on the right side of the tip is slidably and rotatably fitted. Reference numeral 27 denotes an auxiliary lever, the proximal end of which is fixed to the opening/closing shaft 17, and the distal end thereof rotatably connected to a pin 24 provided on the opening/closing shaft lever 18. Reference numeral 28 denotes an automatic opening/closing spring made of a compression spring whose both ends are fixed to the pins 24 and 25, respectively, and which is wound around the outer periphery of the interlocking link 22.

Next, the configuration of the manual operation mechanism will be described.

29 is located at the center in FIG.
and the manual shaft 21,
A handle shaft 29 is rotatably provided in between, and an operating handle 30 for manual opening/closing is attached to the tip of the shaft 29 that protrudes outside the operating mechanism case 3. 31 is a handle shaft lever whose base end is fixed to the handle shaft 29; a pin 34a provided at the distal end of the lever 31; and a tip of a manual shaft second lever 32 whose proximal end is fixed to the manual shaft 21. It is rotatably connected to a pin 32a provided on the side by a second link 33.

Reference numeral 35 indicates a manual shaft third lever whose base end side is fixed to the manual shaft 21. Reference numeral 37 denotes a spring receiving metal fitting rotatably provided on the support shaft 60, and a support hole 38 is formed in the metal fitting 37 as shown in FIG. 36
is a manual link, and on the left side is the spring holder 3.
It is supported by being inserted into a mounting hole 38 formed in 7 so that it can move forward and backward, and the right end part is attached to the spring holder 4.
1 and is rotatably attached to the distal end side of the manual shaft third lever 35 by a pin 39. 40
is a manual opening spring made of a pressure cord spring, which is fixed at both ends by the spring receiving fitting 41 on the distal end side and the spring receiving fitting 37 on the proximal end side, and is wound around the outer periphery of the manual link 36. be. Reference numeral 42 designates a latch shaft located at the center of the left end in FIG. has been done. Reference numeral 45 denotes a latch release lever located on the extension of the axis of the interlocking link 22 and fixed to the latch shaft 42. It is biased to rotate clockwise around the center. Reference numeral 47 denotes a latch receiving fitting whose base end side is fixed to the opening/closing shaft 17, and a roller 48, which is latched by the latching portion 43 of the latch lever 44, is rotatably provided on the distal end side of the latch holder 47 by a shaft 48a. It is being

Reference numeral 49 designates a pointer lever whose base end is integrally fixed to the opening/closing shaft 17, and has a pin 50 protruding from its distal end. Reference numeral 51 denotes a pointer auxiliary lever, the proximal end of which is fixed to a pointer shaft 52 rotatably supported by the operating mechanism case 3, and the distal end thereof provided with a groove-shaped notch 5.
4 is formed, and the lever 49 is inserted into the notch 54.
A pin 50 is inserted. Further, as shown in FIG. 2, a pointer 55 is integrally provided in a portion of the pointer shaft 51 that protrudes to the outside of the operating mechanism case 3 to indicate the open/closed state of the switch. 5
Reference numeral 6 designates an L-shaped circuit switching lever whose base end is integrally fixed to the rotating shaft 11 and whose distal end pressing portion 57 is compatible with a micro switch (not shown), which is automatically turned on by the electromagnetic solenoid 6. (closed circuit)
This is to switch the control circuit of the electromagnetic solenoid 6 to a holding state in which the current is limited when the electromagnetic solenoid 6 is turned on. 58 shown at the left end of FIG.
This shock absorber is made of an oil damper, and is fixed to the reinforcing frame 4 on the left side in the figure. When the plunger 10 of the electromagnetic solenoid 6 protrudes to open the electric circuit, its left end surface 10a comes into contact with the detection part 58a of the shock absorber 58. The impact of the plunger 10 is gently absorbed to prevent the movable electrode connected to the opening/closing shaft 17 from rotating in the closing (closing) direction. Reference numeral 59 indicates a switch lever fixed to the opening/closing shaft 17.

Next, we will discuss automatic opening/closing operation. In the open state of the electrical circuit shown in Figure 1, the electromagnetic solenoid 6
When power is supplied to a control circuit (not shown) connected to the solenoid 6, the solenoid 6 is energized, and the plunger 10, which was protruding to the left in the drawing, is attracted (indicated by an arrow). Then, the plunger link 14 pivoted to the plunger 10 connects to the plunger 1.
0, the first lever 12 connected to the link 14 rotates clockwise around the magnet shaft 11 (arrow). Further, since the shaft 11 rotates, the second lever 16 fixed to the shaft 11 rotates clockwise about the shaft 11, and the first link 19 moves upward (arrow). Due to this movement of the first link 19, the opening/closing shaft lever 1
8 rotates clockwise around the opening/closing shaft 17 (arrow). When the opening/closing shaft lever 18 rotates clockwise, the pin 24 protruding from it slides from left to right within the elongated hole 26 of the interlocking link 22.
It moves so close that it touches the right side end 26b of 6.
As a result, the interlocking link 22 does not move to the right, and the left end of the automatic opening spring 28 is pushed and compressed to the right (arrow) by the pin 24, and the opening force is stored in the automatic opening spring 28. At the same time, it is held in the stored state in preparation for the next opening operation. Further, as the opening/closing shaft 17 rotates, the lever 61 fixed to the shaft also rotates clockwise (arrow).
Then, a movable electrode (not shown) in the main body case connected via the lever 61 similarly rotates clockwise and separates from a fixed electrode (not shown), opening the switch.

As mentioned above, when the opening/closing shaft lever 18 is rotated clockwise, the interlocking link 22 only slightly swings upward and remains in the state before closing (closing) in the left and right direction. The latch release lever 45, which is engaged with the left end surface 22a of the link 22, does not rotate and maintains the same posture shown in FIG. 1 as before the insertion. Therefore, the latch lever 44, which is fixed coaxially with the latch release lever 45, is also held in the state shown in FIG. 1, and its latching operation to the latch receiver 47 is prevented. The state in which the injection is completed by the automatic operation described above is the state shown in FIG.

Next, a case where the circuit is automatically opened from the closed (closed) state as described above will be explained.

When the power is cut off and the electromagnetic solenoid 6 is in a non-excited state, the holding force of the plunger 10 is lost and the pressing holding force of the automatic opening spring 28 is released, so the stored force of the spring 28 opens and closes. The shaft lever 18 rotates counterclockwise around the opening/closing shaft 17. Therefore, the operating mechanism operates in the opposite manner to that described above, and the movable electrode (not shown) connected to the opening/closing shaft 17 is separated from the fixed electrode (not shown), the power distribution line is opened, and the plunger 10 projects to the left. It becomes the open state shown in FIG.

As a matter of course, based on the above operation, the pointer 55 also rotates in the direction of the arrow in conjunction with the opening/closing shaft 17 to display the open/closed state of the electric circuit.

Next, we will discuss manual switching operation.

In the open state shown in FIG.
is rotated in the closing direction (clockwise), and the handle shaft 29 connected to the handle is rotated clockwise (arrow). Then, the handle shaft lever 31 fixed to the handle shaft 29 rotates clockwise about the handle shaft 29, and the second link 33 connected to the lever 31 moves to the left (arrow). This movement of the second link 33 causes the manual shaft second lever 32 to rotate clockwise around the manual shaft 21 (arrow).
At the same time, the manual shaft first lever 2 integrated with the shaft 21
3 also rotates in the same direction, and the interlocking link 22 connected to the lever 23 retreats to the right via the pin 25 (arrow). As the interlocking link 22 retreats, the opening/closing shaft lever 18 rotates clockwise around the opening/closing shaft 17 because the pin 24 of the lever 18 is in contact with the left end 26a of the elongated hole 26 of the interlocking link 22. (arrow), the movable electrode (not shown) connected to the shaft 17 is rotated in the closing direction and inserted into the fixed electrode (not shown), and the switch is closed.

In this case, as mentioned above, the opening/closing shaft lever 18
rotates, the first link 19 moves upward (arrow) in the same way as in the automatic operation described above, the second lever 16 rotates clockwise (arrow) around the rotating shaft 11, and The first lever 1 integrated with 11
2 similarly rotates clockwise (arrow) and further pushes the link 14 to the right (arrow) to push the plunger 10 into the electromagnetic solenoid 6 (arrow).

However, in this case, the plunger 10 is not attracted and held by the electromagnetic solenoid 6 as in automatic operation.

Also, when the manual shaft 21 rotates, the third manual shaft
The lever 35 integrally rotates clockwise about its shaft 21. The rotation of this lever 21 causes the link 36 to rotate clockwise (indicated by the arrow) about the spring receiver 37. As a result, the link 36 is moved to the left by the amount by which the shaft 39 is moved to the left.
A manual release spring 40 provided on the link 36
is compressed between both spring receivers 37 and 41. When the link 36 crosses the line connecting the manual shaft 21 and the support shaft 60, the clockwise rotation of the manual shaft 21 is accelerated by releasing the stored force of the manual release spring 40. Therefore, lever 23, interlocking link 2
2 and the lever 18, the opening/closing shaft 17 rapidly rotates clockwise (arrow) to close the movable electrode (not shown). Therefore, in this case, the interlocking link 22 only moves to the left and the automatic opening spring 28 wound around the link 22 is not compressed.
It does not contribute in any way to the rotational movement of.

In addition, when opening by the above-mentioned manual operation, the latch operates as follows. In other words, the latch release lever 45, which was in contact with the left side surface 22a of the interlocking link 22, rotates clockwise around the latch shaft 42, following the retreat (rightward) of the link 22 due to the load of the spring 46. arrow), latch lever 44
is pressed and rotated clockwise, and at the same time, the latch bracket 47 is rotated upward as described above, so that the roller 48 of the latch bracket 47 is fitted and locked within the latch portion 43 of the latch lever 44. , the latch receiving fitting 47 is prevented from rotating, and the counterclockwise rotation of the opening/closing shaft 17 is locked to maintain the manual closing state. This state of completion of manual input is shown in FIG.

Next, the case where the electric circuit is opened from the closed state shown in FIG. 3 will be described.

The operating handle 30 in the above state is rotated counterclockwise to perform the operation opposite to that for closing the circuit, and the handle shaft 29 is rotated counterclockwise. Then,
The handle shaft lever 31 rotates counterclockwise about the handle shaft 29, and the manual shaft 21 similarly rotates counterclockwise via the second link 33. Due to the rotation, the link 36 moves downward from the upper position while compressing the manual release spring 40, and when it crosses the line connecting the manual shaft 21 and the support shaft 60, the manual release spring 40 is moved downward. Interlocking link 2 depending on accumulated power
2 rapidly retreats to the left, and its left side surface 22a abuts the right side surface 45a of the latch release lever 45.
The lever 45 is rotated counterclockwise about the latch shaft 42 against the spring 46 biasing the lever 45. Then, the latch lever 44 also rotates counterclockwise together with the latch 42, and the latch portion 43 at the tip thereof separates from the roller 48 of the latch receiver 47. As a result, the latch receiving fitting 47 becomes able to rotate counterclockwise, and the opening/closing shaft 17 is released from its rotationally blocked state. During such operation, the left side surface 22a of the interlocking link 22 touches the latch release lever 4.
5, the opening/closing lever 18 is locked and its pin 24 is stopped at the position shown in FIG. 3, so the automatic opening spring 28 continues to be compressed between the pins 24 and 25.

Then, as described above, when the locking portion 43 of the latch lever 45 is disengaged from the roller 48 due to the leftward movement (retreat) of the interlocking link 22, at that moment,
Automatic opening spring 2 compressed to the maximum as described above
8 is applied to the opening/closing shaft lever 1 via the pin 24.
8 in a counterclockwise direction to rapidly rotate the opening/closing shaft 17 in the counterclockwise direction, and the movable electrode connected to the shaft 17 also rotates in the opening direction at once to open the electric circuit.
In addition, when the manual release spring 40 is manually released, most of its stored force is spent until the latch is released, so it only acts auxiliary to the rotation of the opening/closing shaft 17, but when the manual release is performed, Since the entire stored force of the automatic opening spring 28 acts on the rotation of the opening/closing shaft 17, the opening/closing shaft 17 is rapidly moved in the opening direction by the urging force of this strong automatic opening spring 28. Rotate. Therefore, the movable electrode detaches more quickly than the fixed electrode.

C. Effect of the invention Since the present invention has the above-mentioned configuration, during manual opening operation, the stored force of the automatic opening spring compressed during automatic closing can be released to perform a quick cutting operation. In particular, the stored force of the automatic opening spring at the time of manual release is held by the holding means until just before the movable electrode separates from the fixed electrode, and the holding means is held by the holding means immediately before the movable electrode separates from the fixed electrode. Since the release is performed by the release means associated with the manual link mechanism, the stored force of the automatic opening spring can be released in its entirety immediately before the movable electrode separates from the fixed electrode. Therefore, by applying the stored force of the automatic opening spring effectively and in a timely manner, the movable electrode can be rapidly rotated and cut off quickly when it is released. The arc can be reliably extinguished even when manually opened.

[Brief explanation of the drawing]

The drawings show an embodiment of the operating device of the present invention, and FIG. 1 is a front view of the operating device in the open (open) state during automatic operation and manual operation, and FIG.
3 is a front view of a state in which the circuit is closed by automatic operation from the open state in FIG. 1; FIG. 4 is a left side view of FIG. 3; 5 is a plan view of FIG. 3, FIG. 6 is a front view of the open state shown in FIG. 1 in which the circuit is manually closed (closed), and FIG. 7 is an enlarged side view of the shock absorber section. 6... Electromagnetic solenoid, 10... Plunger, 22... Interlocking link, 28... Automatic opening spring, 29... Handle shaft, 42... Latch shaft, 4
3... Latch portion, 44... Latch lever, 45...
Latch release lever, 46... spring, 47... latch receiver, 48... roller.

Claims (1)

[Scope of utility model registration request] an electromagnetic solenoid; an automatic link mechanism that automatically rotates the opening/closing shaft of the movable electrode in the closing direction by energizing the electromagnetic solenoid; and rotating the opening/closing shaft of the movable electrode in the opening direction by demagnetizing the solenoid; an automatic operating mechanism comprising an automatic opening spring that is compressed by the closing operation of the opening/closing link mechanism and stores force in the opening direction of the opening/closing shaft; a manual operating handle; and an opening/closing operation of the manual operating handle. a manual link mechanism for opening and closing the opening/closing shaft of the movable electrode; and a compression means for compressing the automatic opening spring so that opening force is stored therein by the closing operation of the manual operation handle. a holding means for maintaining the automatic opening spring in a compressed state; and a holding means for maintaining the automatic opening spring in a compressed state; An operating device for an automatic switch, comprising: a manual operating mechanism comprising a release means for releasing the holding state of the holding means.