JPS58184214A - Operating device 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 an improvement in an operating device for a constantly energized voltageless open switch operated by a solenoid.

[Technical background of the invention]

A conventional solenoid operating device for a switch such as a vacuum switch is shown in FIG. The figure shows the open circuit state of the switch. coil 1
is wound around the pole piece 21 and the solenoid frame 2b forming a magnetic circuit. The armature 3 and rod 4, which are attracted to the pole piece 2a, are integrally constructed. A roller 5 is provided which is pushed up by the rod 4 when the armature 3 is attracted to the pole piece 2a by the excitation of the coil 1.

This roller 5 is provided at a connection portion between a lever 7 rotatably mounted by a pin 6 and a link 8 forming a toggle mechanism between a lever 10 that is integral with a shaft 11.The shaft 11 is further integrated with lever 12
A lever 110 for operating a movable shaft 18 of an opening/closing section 19 of a vacuum valve or the like is connected via a link II to a lever 14 which is integrated with a shaft 15 of a rotating shaft section. The tip of the lever 12 is provided with an opening spring 20 between it and a fixed part for bringing the opening/closing part into an open state.

Next, the operation of the above configuration will be explained. Voltage on coil 1 °
When the voltage is applied, the magnet is excited and a magnetic circuit is formed in the pole piece 2 and the solenoid frame 2b, and the rod 4 is attracted in the direction of the arrow in FIG. 1 and the roller 5 is pushed up.

The lever 7 rotates counterclockwise as shown by arrow B around the bottle 6, and rotates the shaft 11, which is integrated with the lever 10 via the link 8, in the clockwise direction as shown by the arrow. Since the shaft 11 and lever 12 are integrated, the lever 12 also rotates in the same direction, and the link 13 is moved in the direction of the arrow to move the shaft 15, which is integrated with the levers 14 and 17, in the direction of the hour hand as indicated by arrow F. Turn on the rotation. At the same time, the opening spring 20 is also compressed and energized. As a result, the opening/closing section 19 is closed, and this closed state is shown in FIG.

In this state, an operation circuit (not shown) switches from the closing circuit to a holding circuit via impedance, and limits the current to maintain the closing state.

When the coil 1 is demagnetized in the above-mentioned closed state, the armature 3
The suction force disappears, and the opening/closing part 19 and the operating device return to the original open state shown in FIG. 1 due to the releasing force of the opening spring 2o.

[Problems with background technology]

In the conventional operating device, when the closed state is maintained, the force of the opening spring 2o, the force of the contact spring 21 for applying a contact load to the opening/closing part 19, and the return spring 22 of the armature 3 are used.
The return force that is the sum of the forces must be maintained by the suction force of the solenoid 3. For this reason, a large amount of electrical energy is required to maintain the device, which is not economical, and it also has the disadvantage of being large.

[Purpose of the invention]

111. It is a seventh object of the present invention to eliminate the above-mentioned drawbacks and to obtain a switch operating device which reduces the size of the operating mechanism and reduces energy consumption by reducing electrical energy.

[Embodiments of the invention]

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

Figure 183 shows the closed state of the switch operating device of the present invention.

In the present invention, the pole piece 2 is provided inside the solenoid 1.
A magnetic elastic body (for example, rubber containing iron powder, etc.) 23 is provided between the armature 3 and the armature 3, and is latched to the tip of the lever 10 connected to the link 7.8 forming a toggle. A locking roller 24 is installed so that it can be locked with a latch 25 when the switch is in the closed state. latch 2
5 uses a shaft 26 as a rotation axis and is integrated with a lever 27. A bent link 28 is attached to the tip of the lever 27 so that the tip 211a is hooked thereon. link 28
The tip 28 of the solenoid 1 is arranged in such a way that it hooks onto the protrusion 4j formed at the tip of the rod 4 of the solenoid 1 when the switch is opened. The movement of the link 28 is restricted by the guide portion 29 so that it can only move left and right.

Next, the operation of the present invention will be explained. When the solenoid 1 is energized, the armature 3 moves to the left as shown by arrow A from the open state shown in FIG. 4, and first operates to crush the elastic body 23 as shown in FIG. In this state, a gap g is created between the latch locking roller 24 and the latch 25. At this time, when the operation circuit (not shown) switches from the closing circuit to the holding circuit via impedance, the armature 3
Opening spring 20, contact spring 21, armature return spring 2
2, and the latch locking roller z4 is mechanically held in a locked state by the latch 25, as shown in FIG. The armature 3 forms a magnetic circuit while in contact with the elastic body 2J, and maintains an attractive state.

In the solenoid 1, as the gap between the armature 3 and the pole piece 2a becomes larger, the attractive force becomes smaller, so a magnetic elastic body 23 is inserted to prevent the gap from forming.

Therefore, the holding force of the armature 3 is only required by the force of the armature return spring 22, so the energy supplied to the coil 1 can be reduced compared to the conventional one, and the holding coil can be made smaller. When the circuit is opened, when the coil 1 is demagnetized, the armature 3 moves to the right by the armature return spring 22, and the protrusion 4 of the load 4 moves to the right.
Hook the tip 28m of the link 28 with the lever 27,
Since the latch 25 is moved counterclockwise to release the lock, the opening portion 19 is opened by the releasing force of the opening spring 22, and the operation mechanism and the operating mechanism are returned to the original open state shown in FIG.

〔Effect of the invention〕

As described above, in accordance with the present invention, there is provided an operating device for a constantly excited voltage-free opening type switch which attracts the armature through ii misolenoid excitation and closes the opening/closing part through leakage against the opening spring and the return spring of the armature. , a magnetic elastic body such as rubber is interposed between the armature and the pole piece that forms a magnetic circuit when the solenoid is energized, and when the armature is attracted, the opening/closing part is held closed and the solenoid is de-energized. Since the latch is provided with a latch that releases the lock when the armature returns, the holding current supplied to the solenoid coil can be reduced when the opening/closing part is closed, making it possible to create a small opening/closing unit with low energy consumption. You can obtain the operating device for the device.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional switch operating device in an open state, FIG. 2 is a sectional view similarly showing a closing state, and FIG. 3 is a closing state of a switch operating device according to two embodiments of the present invention. FIG. 4 is a cross-sectional view showing the open circuit state, and FIG.
The figure is also a sectional view showing the state at the instant of injection. 1...Coil, 2...Solenoid frame:,
. 3... Armature, 4... Rod 41...
・Protruding portion, 5...Roller, 6...Bin r...Lever, 8...Link, 9...Hinge bin 10...
/(+, 11...shaft, 12...lever 13
...Link, 14...Lever, 15...Shaft 11...Lever, 18...Opening/closing part movable shaft 19
... Opening/closing part, 20... Opening spring 21... Contact spring, 22... Armature return spring 23... Magnetic elastic body 24... Latch system locking roller

Claims (1)

[Claims] A magnetic circuit is formed by the excitation of the solenoid in a constantly energized voltage-free open switch operating device that absorbs the armature by energizing the solenoid and closes the opening/closing part via a link against the opening spring and armature return spring. A magnetic elastic body is interposed between the pole piece and the armature to hold the opening/closing part closed when the armature is attracted, and when the solenoid is de-energized, the latch is released as the armature returns. An operating device for a switch, characterized in that it is provided with: