JPS61256524A - Operation mechanism for switch - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a vacuum switch equipped with a disconnecting section, and particularly to an improvement in its operating mechanism.

(Technical background of the invention and its problems) Normally, in a vacuum switch equipped with a disconnecting section, the disconnecting section does not have the ability to switch the load current, so when closing the circuit, the disconnecting section is closed first, and then the vacuum Close the opening/closing part, mainly the valve,
In addition, when opening a circuit, the switching section is first opened and then the disconnecting section is opened, which requires an operating sequence and time difference, and it is a necessary condition that the load current is not switched on or off to the supply body at the disconnecting section.

Fig. 5 shows an example of the operating mechanism of a conventional vacuum switch equipped with a disconnection section. In the figure, a solenoid 2 is attached to a frame 1, and when this solenoid 2 is energized, A rod 3a is provided that is pushed out (towards the left in the figure) by an armature 3 that is moved. The frame 1 also includes a lever 5 that is rotatable via a support pin 4 and rotates counterclockwise when the rod 3a is pushed out, and a cam lever 58 that rotates integrally with the lever 5. installed. A link 7 is rotatably connected to this lever 5 via a connecting pin 6, and one end of a lever 9 is connected via a connecting pin 8 inserted into a long hole 7a provided at the end of this link 7. has been done. The other end of the lever 9 is connected to a shaft 10 rotatably attached to the frame 1 so as to rotate integrally therewith.

A lever 11 whose one end is rotatable is attached to the shaft 10. This lever 11 is connected to a pin ll provided in the middle.
A tension spring 12 is stretched between the frame body 1 and the roller 13 provided on the downwardly extending protrusion 11b, which engages with the cam surface of the cam lever 5a, and the other end engages with a stopper 14 provided on the frame body 1. It is now stopped. Note that the rear half of the cam surface of the cam lever 58 is provided with a circular arc surface centered on the support pin 4 . One end of a link 15 is connected to the shaft 13a of the roller 13, and a lever 16 is rotatably connected to the other end of the link 15.

As shown in FIG. 6, this lever 16 has a movable contact portion 18 that contacts a fixed contact portion 18a that constitutes a disconnection portion 17.
They are connected via an insulating shaft 19 so as to rotate integrally. Further, a lever 20 that rotates integrally with the shaft 10 is attached. One end of a link 21 is connected to this lever 2o via a pin 20a provided in the middle, and a member 22 rotatably connected via a pin 20b causes the lever 20 to rotate clockwise. A compression spring 23 attached between the body 1 and the body 1 is compressed.

Note that the lever 20 is locked to a stopper 24 provided on the frame 1. On the other hand, the other end of the link 21 is rotatably connected to one end of a lever 25, and as shown in FIG. It is connected so as to rotate integrally with the insulating shaft 28.

Next, the operation of the above configuration will be explained. First, when closing the circuit, when the solenoid 2 is energized, the armature 3 is attracted, the rod 3a is pushed out, and the lever 5 is rotated counterclockwise. At this time, the cam lever 58 also rotates counterclockwise,
The lever 11 is rotated clockwise via the roller 13.

This automatic action of the lever 11 causes the lever 16 to rotate clockwise via the link 15, thereby rotating the movable energizing part 18 clockwise to close the disconnecting part 17. At the same time, the tension spring 12 is charged. On the other hand, the lever 9 does not rotate because the connecting pin 8 slides through the elongated hole 7a of the link 7 while the new path portion 17 is closed. Therefore, axis 1
However, when the rod 3a is further pushed out, the shaft 10 rotates clockwise via the link 7 and the lever 9.

This causes the lever 20 to rotate clockwise, causing the lever 20 to rotate clockwise.
5 in the same direction to close the opening/closing part 26. At the same time, the compression spring 23 is charged. Also, when opening the circuit,
When the solenoid 2 is deenergized, the lever 20 is rotated counterclockwise by the releasing force of the compression spring 23, and the lever 25 is rotated in the same direction, so that the opening/closing portion 26 is opened. On the other hand, while the opening/closing section 26 is opened, the lever 11 is operated by the roller 13.
is engaged with the rear half of the cam surface of the cam lever 58, so it does not rotate. therefore.

The disconnection section 17 maintains a closed state. however,
When the lever 20 is further rotated counterclockwise, the lever 9
Since the cam lever 58 rotates clockwise via the link 7, the roller 13 moves from the rear half of the cam surface to the front half, and the lever 11 rotates counterclockwise. As a result, the lever 16 rotates in the same direction to open the disconnection section 17.

As is clear from the above explanation, since the solenoid 2 is operated from the outside only, there is a problem in that if an abnormality occurs in the control circuit of the solenoid 2, the operation becomes impossible.

[Purpose of the invention]

The present invention was made in view of the above-mentioned circumstances, and an object of the present invention is to provide an operating mechanism for a switch equipped with an opening/closing part and a disconnecting part, which is capable of manual and electric opening operations, and is miniaturized. shall be.

[Summary of the invention]

In an operating mechanism for a switch equipped with an opening/closing part and a disconnecting part, the present invention provides a link mechanism that opens and closes the opening/closing part and the new road part at different times of operation using an electric drive source, and a link mechanism connected to the preceding stage of this link mechanism. By arranging a manually operated toggle mechanism in series with the link mechanism, when an abnormality occurs in the electric drive source or its control circuit and the toggle mechanism is operated manually, the opening/closing section and new road section can be switched off. It is possible to open and close the opening and closing at different start times as described above, and it is also possible to reduce the size.

[Embodiments of the invention]

An embodiment of the switch operating mechanism of the present invention will be described below with reference to the drawings. Note that the same parts as in FIGS. 5, 6, and 7 are given the same reference numerals, and redundant explanations will be omitted. 1 and 2, the manually operated toggle mechanism 30 includes a drive shaft 32 rotatably attached to a frame 31, and a lever attached to the drive shaft 32 so as to rotate integrally with the drive shaft 32. 33, a toggle lever 34 rotatably attached to the drive shaft 32, and a shaft member 37 attached to guide pins 35 and 36 rotatably provided to the toggle lever 34 and lever 33, respectively. It consists of a compression spring 38. In addition, the electrically operated link machine W40 has a frame 3
A cam lever 42 is rotatably attached to a shaft 41 provided in 1, engages with the rod 3a of the solenoid 2, and has a cam groove 42a; A freely attached lever 43, a link 45 whose one end is connected to a roller 44 that slides in a cam groove 42a of the cam lever 42, and a link 45 which is rotatably connected to this link 45 via a connecting pin 46, and an opening/closing part. a lever 47 whose other end is connected to an insulated shaft 19 of 17; and a lever 49 whose one end is connected to a roller 44 and whose other end is rotatably connected to a shaft 48 which is rotatably attached to the frame 31; A lever 51 is attached at one end to rotate integrally with the shaft 48 and has a connecting pin 50 at the other end, and a long hole 52a in which the connecting pin 50 engages is provided at one end and connected to the lever 43. A lever 52 has its other end rotatably attached via a pin 53, a lever 54 has one end attached to rotate integrally with the shaft 48, and a lever 54 has one end attached to a connecting pin 55. It is rotatably connected to the lever 54 through the insulating shaft 2 at the other end.
The lever 58 is rotatably connected to a lever 56 connected to the lever 8 via a connecting pin 57.

Therefore, the manually operated toggle mechanism 30 described above is arranged in series with the electrically operated link mechanism 40,
Both mechanisms 30 and 40 are connected by a connecting pin 53 and a link 60 connected to the toggle lever 34 via a connecting pin 59.

Next, the operation of the above configuration will be explained. First, when closing the circuit by manual operation, the drive shaft 32 is rotated clockwise from the state shown in FIG. 2 using a handle (not shown) or other appropriate means. When the dead point of the toggle lever 34 is passed in the middle of this rotation, the releasing force of the compression spring causes the toggle lever 34 to
4 rotates counterclockwise and comes into contact with the strapper. axis 32
When the lever 33 rotates further, the lever 33 comes into contact with the stopper as shown in FIG. This rotation of the toggle lever 34 causes the lever 43 and the cam lever 42 to rotate counterclockwise via the link 60. Due to this rotation of the cam lever 42.

Since the cam groove 42a pushes up the roller 44 and the lever 47 rotates clockwise via the link 45, the insulating shaft 19
is also rotated clockwise to bring the movable current-carrying part 18 of the disconnector 17 into contact with the fixed current-carrying part 18a, thereby closing the disconnector 17. Note that in the latter half of the rotation of the drive shaft 32, the roller 44 is moved into the cam groove 4.
2a, the link 45 is not pushed up.Also, in the first half of the rotation of the drive shaft 32, the lever 43 rotates counterclockwise and pushes up the lever 52, but the link 45 is not pushed up. is engaged with the elongated hole 52a, so the lever 51 does not rotate. That is, the opening/closing portion 26 does not close. However, in the second half of the rotation of the drive shaft 32, the lever 51 is rotated clockwise by the lever 52, and the shaft 48 is rotated clockwise. This rotation of the shaft 48 causes the lever 56 to rotate clockwise via the levers 52 and 58, which rotates the insulating shaft 28 to close the vacuum valve 27 and close the opening/closing section 26.

Next, when manually opening the circuit from this closed state, when the drive shaft 32 is rotated counterclockwise, the toggle lever 34 is rotated clockwise due to the releasing force of the compression spring 38, resulting in the state shown in FIG. Become. Therefore, the opening/closing portion 26 opens the circuit by an operation opposite to the case of closing the circuit described above.

Then, the disconnection section 17 is opened.

Next, when closing the circuit by electrical operation, when the solenoid 2 is energized, the rod 3a is pushed out as shown in FIG. 4, and the lever 43 and the cam lever 42 are rotated counterclockwise. When the cam lever 43 rotates counterclockwise, the new path section 17 is first closed, and then the opening/closing section 26 is closed, in the same manner as when the circuit is closed by manual operation described above. At this time, the toggle lever 34 is rotated counterclockwise via the lever 60 to store the compression spring 38.Next, when opening the circuit from this closed state by electrical operation, when the solenoid 2 is deenergized. , since the releasing force of the compression spring 38 rotates the toggle lever 34 clockwise.

The same operation as when opening the circuit by manual operation described above.

First, the disconnecting section 17 is opened, and then the opening/closing section 26 is opened.

With the above configuration, even if an abnormality occurs in the control circuit of the solenoid 2, it can be opened and closed with one manual operation, and can be easily handled. Also 1 Manually operated toggle mechanism 3
Since the elastic body 0 is the compression spring 38, it acts to store energy when closing the circuit by electrical operation and release energy when the circuit opens, so that the conventional compression spring can be omitted. This simplifies the configuration and allows manual operation of the toggle mechanism 3.
0 is arranged in series with the electrically operated link machine JfIt40, the external dimensions, particularly the width dimensions, can be reduced to reduce the mounting space for the switch, and the external dimensions of the switch can be reduced.

Note that in the above description, a solenoid is used as the drive source for electrical operation, but an electric motor may also be used.

〔Effect of the invention〕

Since the present invention is configured as described above, even if an abnormality occurs in the electric drive source, its control circuit, etc., it can be opened and closed by manual operation and can be used in an emergency. or.

The configuration is simple and the external dimensions are small, so the installation space for the switch can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing the operating mechanism of the switch of the present invention, and FIG.
The figure is a sectional view taken along the line A-A in Figure 1 and viewed in the direction of the arrow, and Figure 3 is an explanatory diagram showing the operation of an embodiment of the present invention.
FIG. 4 is an explanatory diagram showing an operation different from that in FIG. 3 of an embodiment of the present invention, FIG. FIG. 7 is an explanatory diagram showing a disconnecting section of a switch equipped with a conventional new path section. FIG. 7 is an explanatory diagram showing a switching section of a switch equipped with a conventional disconnecting section. 2... Solenoid, 17... Disconnection section 26... Opening/closing section, 30... Manually operated toggle mechanism 38... Compression spring, 40... Electrically operated link mechanism (8733) Agent Patent attorney Yoshiaki Inomata (and 1 other person) Figure 1 @ Figure 4 Figure 5 Figure 7

Claims (3)

[Claims] (1) In the operation mechanism of a switch equipped with an opening/closing part and a disconnecting part, a link mechanism that opens and closes the opening/closing part and the disconnecting part at different times of operation by an electric drive source, and a link mechanism connected to the preceding stage of this link mechanism. An operating mechanism for a switch, characterized in that a manually operated toggle mechanism is arranged in series with the link mechanism. (2) The link mechanism includes a first link system that opens and closes the disconnection section, and a second link system that is connected to the first link system via a long hole and a pin that engages with the long hole and opens and closes the opening and closing section. An operating mechanism for a switch according to claim 1, comprising a link system. (3) Claim 1 in which the elastic body of the toggle mechanism stores energy even when the link mechanism is driven by an electric drive source.
The operating mechanism of the switch described in Section 1.