JPS6226129B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a switch operating mechanism that is an improved operating mechanism for a switch such as a vacuum switch.

[Conventional technology]

This type of switch operating mechanism includes, for example, the Showa
On January 25, 1950, there was something described on pages 42 to 48 of ``Applications and Practice of Vacuum Switching Equipment'' published by Denki Shoin.

This type of conventional switch operating mechanism required a latch member to maintain the closed state and required a complicated linkage mechanism.

That is, in order to open and close the switch, driving forces such as the rotational force of an electric motor, the magnetic force of an electromagnet, and the output of an air cylinder are used in a complex combination of gears, cams, links, and the like.

[Problem that the invention seeks to solve]

For this reason, the conventional switch operating mechanism has problems such as a large number of components, a complicated structure, a tendency to break down, an expensive price, and an increase in the size of the device.

The present invention has been made to solve these problems, and is designed to reduce the number of components, simplify the structure, and facilitate latching.

[Means for solving problems]

The switch operating mechanism according to the present invention includes a switch 1
One end of a link 8 is rotatably coupled to the movable electrode 1c, a roller 9 is provided at the other end of the link 8, and the roller 9 is moved in a direction substantially perpendicular to the direction of movement of the movable electrode 1c. a rail 14 equipped with a locking portion 14b that guides the roller 9 and prevents the restoring operation of the roller 9; a moving link 11 whose one end is rotatably connected to the other end of the link 8; A feeding device was provided for moving the roller 9 through the respective rollers.

[Effect]

In this invention, by moving the roller 9 along the rail 14 by a loading device, the movable electrode 1c is loaded via the link 8, and the rail 14 is moved.
The restoring operation of the roller 9 is prevented by the locking portion 14b provided at the.

〔Example〕

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

FIG. 1 is a side view showing an embodiment of the switch operating mechanism according to the present invention in an open state. In FIG. 1, the vacuum switch 1 includes a vacuum valve 1a and It consists of a fixed electrode 1b and a movable electrode 1c installed in the vacuum valve 1a opposite to the fixed electrode 1b. Movable electrode 1
An opening/closing operation arm 2 is attached to the end of the vacuum valve 1a that protrudes outside the vacuum valve 1a. The contact pressure spring 3 is installed between the end of the opening/closing arm 2 and the spring receiver 1d provided on the movable electrode 1c, and serves to connect the movable electrode 1c to the fixed electrode 1b. Separate arm 4
is rotatably supported by a rotating shaft 5, one end of which is rotatably attached to the opening/closing operation arm 2 by a rotating shaft 6, and one end of a separation spring 7 is attached to the other end. It is being The separation spring 7 is a tension spring mounted between the other end of the separation arm 4 and the fixed member, and has the function of separating the movable electrode 1c from the fixed electrode 1b. One end of the link 8 is rotatably attached to the opening/closing arm 2 by a rotating shaft 6, and a roller 9, which is a sliding member, is rotatably attached to the other end by a rotating shaft 10. One end of the moving link 11 is rotatably attached to a rotating shaft 10, and the other end is rotatably attached to a movable iron core 12a, which will be described later, by a rotating shaft 13. The electromagnet 12 is a feeding device that feeds the movable electrode 1c into the fixed electrode 1b, and the electromagnet 12 is a feeding device that feeds the movable electrode 1c into the fixed electrode 1b.
2a, an electromagnetic coil 12c that attracts the movable core 12a to the fixed core 12b during excitation, and a release spring 12d installed between the movable core 12a and the fixed core 12b. There is. The rail 14 is a guide member that guides the movement of the roller 9 in a horizontal direction substantially perpendicular to the moving direction of the movable electrode 1c, and one end thereof is rotatably supported by a rotating shaft 15, and the other end is rotatably supported by a rotating shaft 15. The lower end of the supporting member 16 engages with the notch 14a.
An inclined portion 14b is provided on the upper surface side of the other end to prevent the roller 9 from returning to its original position. The support member 16 includes a roller 16 that engages with the notch 14a.
a and a support 16c that rotatably supports the roller 16a at one end via a rotating shaft 16b, and the support 16
a rotating shaft 16d that rotatably supports the other end of c;
The coil spring 16f is wound around a rotating shaft 16d, one end of which is engaged with a support member 16c, and the other end of which is fixed to a fixed shaft 16e. The spring 16f acts to rotate the support body 16c in a counterclockwise direction about the rotating shaft 16d, and normally engages the roller 16a with the notch 14a. The tripping electromagnet 17 is a tripping device for tripping the movable electrode 1c from the fixed electrode 1b, and includes a movable iron core 17a, a yoke 17b that supports the fixed iron core 17a, and one end 17c of the yoke 17b that is rotatable. Installed movable iron piece 1
7c, and the fixed iron core 17 which fixes the movable iron piece 17c during excitation.
It is composed of an electromagnetic coil 17d that attracts the magnetic field a. One end of a trip bar 18 is attached to the other end of the movable iron piece 17c. Trip bar 1
At the other end of 8 is a fixed iron core 17a of a movable iron piece 17c.
When the roller 16a is attracted to the notch 1, the support 16c is engaged and pressed rightward in FIG.
4a from the engagement. The coil spring 19 is installed between the lower end surface of the rail 14 and the fixed part, and acts to rotate the rail 14 in a counterclockwise direction about the rotating shaft 15, so that the upper end of the rail 14 is attached to the roller 9. It engages and presses.

Next, this operation will be explained using FIGS. 1 to 4. FIG. 2 is a side view showing the closed state of the switch operating mechanism according to the present invention, FIG. 3 is a side view showing the vicinity of the other end of the rail 14, and FIG. 4 is a side view showing the closing state of the switch operating mechanism according to the present invention. It is a side view showing a removed state.

Now, with the vacuum switch 1 shown in Fig. 1 in the open state,
When the electromagnetic coil 12c of the electromagnet 12 is excited, the movable iron core 12a is attracted to the fixed iron core 12b. Therefore, the roller 9 moves to the right in FIG. 1 on the rail 14 via the moving link 11. When the roller 9 moves to the right, the rotating shaft 6 is lifted upward in FIG. 1 through the link 8 against the tension spring force of the separation spring 7, and becomes the closed state shown in FIG. 2.

In addition, in this closed state, the roller 9 is attached to the inclined portion 14 which is the locking portion of the rail 14, as shown in FIG.
b, the roller 9 is prevented from moving to the left in FIG. 2, and even if the electromagnetic coil 12c is de-energized, the closed state position of the roller 9 shown in FIG. 2 is stably maintained.

In the closed state shown in FIG. 2, when the electromagnetic coil 17d of the tripping electromagnet 17 is excited, the movable iron piece 17c is attracted to the fixed iron core 17a, and the movable iron piece 17c rotates clockwise around one end 17'c. do. When the movable iron core 17c rotates clockwise, the trip bar 18 moves to the right in FIG.
Press. When the support body 16c is pressed, the support body 16c resists the spring force of the spring 16f and rotates against the rotation shaft 1.
6d in the clockwise direction, and the roller 16a is removed from the notch 14a. When the roller 16a comes off the notch 14a, the spring force of the contact spring 3 and the separation spring 7 overcomes the spring force of the coil spring 19, and the rail 14 rotates clockwise about the rotating shaft 15. Rotate to. Therefore, the roller 9 and the link 8 are pressed downward in FIG. 2 by the spring force of the contact spring 3 and the separation spring 7, and the vacuum switch 1 is tripped as shown in FIG. state.

The tripped state of the vacuum switch 1 shown in FIG.
Due to the spring force d, the roller 9 moves to the left in FIG. 4 on the rail 14. When the roller 9 moves to the left, the rail 14 is moved by the coil spring 19.
Due to the spring force, the rail 14 rotates counterclockwise about the rotating shaft 15, and the rail 14 becomes horizontal as shown in FIG.

On the other hand, the support body 16c rotates counterclockwise about the rotating shaft 16d by the spring force of the spring 16f, and the roller 16a engages with the notch 14a as shown in FIG. Therefore, the vacuum switch 1 enters the open state shown in FIG. 1, and the opening operation is completed.

In addition, in the open state of the vacuum switch 1 shown in FIG. 1, when the electromagnetic coil 17d of the tripping electromagnet 17 is energized during the closing command of the vacuum switch 1, the roller 16a of the support member 16 moves into the notch. 14a, the vacuum switch 1 is tripped in the same manner as described above, and the vacuum switch 1 is switched from the open state shown in FIG. 1 to the tripped state shown in FIG. Become. Therefore, even in the free trip state required of the breaker, that is, even during a closing command, the function of tripping the breaker is ensured by the operation of the tripping device.

5 and 6 are side views showing other embodiments of the other end of the rail 14, respectively. That is, in FIG. 3, an inclined portion 14b, which is a locking portion of the roller 9, is formed on the upper end surface of the other end of the rail 14,
The closed position of the roller 9 shown in FIG. 2 is stably maintained. On the other hand, in FIG. 5, a recess 14c, which is a locking portion of the roller 9, is formed on the upper end surface of the other end of the rail 14.
In addition, in FIG. 6, a convex portion 14d, which is a locking portion of the roller 9, is formed at the upper end of the other end of the rail 14 to stabilize the loading state position of the roller 9 shown in FIG. It was designed to be maintained.

In addition, although the case where a vacuum switch was used as a switch was explained in the said Example, you may use an oil-filled switch, a gas switch, an air switch, etc. as a switch. Further, although the case where an electromagnet is used as the input device and the tripping device has been described, an air cylinder mechanism, a hydraulic cylinder mechanism, a heat storage spring, etc. may be used as the loading device and the tripping device.

〔Effect of the invention〕

As described above, according to the present invention, one end of the link is rotatably coupled to the movable electrode of the switch, and the other end has a roller, and the link is configured to move the roller substantially orthogonally to the moving direction of the movable electrode. A rail equipped with a locking part that guides and prevents the roller from restoring, a moving link whose one end is rotatably connected to the other end of the link, and a moving link that moves the roller through the moving link. Since it is composed of a loading device that allows the loading device to be opened, the number of components is small, the structure is simple, and the loading state can be easily latched.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the switch operating mechanism according to the present invention in an open state, and FIG. 2 is a side view showing an embodiment of the switch operating mechanism in a closed state according to the present invention. 3 is a side view showing an embodiment near the other end of the rail of the device shown in FIGS. 1 and 2, and FIG. 4 is a side view showing an embodiment of the switch operating mechanism according to the present invention in a tripped state. FIGS. 5 and 6 are side views showing other embodiments near the other end of the rail. In the figures, the same parts in each figure are given the same symbols, 1 is a vacuum switch, 1b is a fixed electrode, 1
c is a movable electrode, 8 is a link, 9 is a roller, 11 is a moving link, 12 is an electromagnet, 14 is a rail, 1
4a is a notch, 14b is an inclined portion, 16 is a support member, and 17 is a tripping device.

Claims (1)

[Scope of Claims] 1. A switch 1 having a fixed electrode 1b and a movable electrode 1c, a link 8 rotatably attached to the movable electrode 1c at one end and having a roller 9 at the other end;
The roller 9 guides the movement of the roller 9 in a direction substantially perpendicular to the moving direction of the movable electrode 1c, one end is rotatably supported, the other end is supported by a support member 16, and the A rail 1 having a locking portion 14b at the other end that prevents the roller 9 from restoring.
4, a moving link 11 whose one end is rotatably connected to the other end of the link 8, and a moving link 11 which is rotatably connected to the other end of the moving link 11, and the roller 9.
By moving the movable electrode 1c from one end side of the rail 14 to the other end side, the movable electrode 1c is moved from the fixed electrode 1
a loading device 12 for loading into the terminal b, and a tripping device 1 for tripping the support member 16 from the support of the rail 14 and tripping the movable electrode 1c from the fixed electrode 1b.
7. A switch operating mechanism characterized by comprising the following. 2. The switch operating mechanism according to claim 1, wherein the locking portion is an inclined portion 14b that prevents the roller 9 from restoring. 3. The switch operating mechanism according to claim 1, wherein the locking portion is a recess 14c that prevents the roller 9 from restoring. 4. The switch operating mechanism according to claim 1, wherein the locking portion is a convex portion 14b that prevents the roller 9 from restoring.