JPH02215022A - Vacuum contactor - Google Patents

Abstract

PURPOSE:To make the titled device compact by reducing the height and the width by disposing a vacuum valve and a switching operation part in such a way as to cross a shaft line of the vacuum valve with the shaft line of the switching operation part. CONSTITUTION:A switching operation part 17 is disposed in a direction perpendicular to a shaft to be operated of a vacuum valve 5, and the shaft to be operated of the vacuum valve 5 and the operation shaft center of the switching operation part 17 are connected with each other through a ring mechanism 14. The vacuum valve 5 and the switching operation part 17 can thus be contained almost within the same width, and because one of the vacuum valve 5 and the switching operation part 17 is disposed perpendicularly to the other, the height of the whole equipment can be reduced, thereby a compact vacuum contactor can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vacuum electromagnetic contactor that combines a vacuum valve and an opening/closing operation section, and particularly relates to a vacuum contactor suitable for being mounted on an electric railway vehicle.

[Conventional technology]

As shown in FIGS. 6 and 7, the conventional vacuum contactor has a configuration in which a vacuum valve 100 is arranged vertically and is driven by an opening/closing operation section 101 provided on the side thereof. On the other hand, as shown in FIGS. 8 and 9, there is also one in which the vacuum valve 100 and the opening/closing operation section 101 are arranged in a straight line in the vertical direction.

Note that related devices of this type include Japanese Patent Application Laid-open No. 53
-78077 publication etc. are mentioned.

[Problem to be solved by the invention]

In the conventional vacuum electromagnetic contactor described above, since the vacuum valve 100 and the opening/closing operation section 101 are arranged side by side, the width dimension W becomes large (FIGS. 6 and 7), and they are stacked one above the other. Therefore, the height dimension H increases (Fig. 8).

(Fig. 9), no consideration was given to miniaturization, which is essential for on-vehicle use, and there was a problem that the device could not be stored in a storage equipment box suspended under the floor of an electric railway vehicle.

An object of the present invention is to provide a compact vacuum contactor with reduced height and width dimensions.

Means for Solving Section C] The above object is to arrange the opening/closing operation part in a direction perpendicular to the operated axis of the vacuum valve, so that the operating axis of the operated axis of the vacuum valve and the opening/closing operation part are aligned. This is achieved by configuring the device to be connected via an IL-shaped ring mechanism.

[Effect]

With the above configuration, the vacuum valve and the indirect operating section can be accommodated within approximately the same width, and since one of the vacuum valve and the opening/closing operating section is arranged at right angles to the other,
The overall height dimension can also be reduced.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below regarding a vacuum electromagnetic contactor shown in FIGS. 1 and 2. A fixed terminal support 3 is fixedly installed between a pair of left and right insulating support plates 1 and 2 standing upright. A connector 4 is supported on the fixed terminal support 3, and the upper end of the vacuum valve 5 is firmly supported via the connector 4. The movable terminal 5a at the lower end of the vacuum valve 5 is connected to a movable connector 7 having sliders 6 on both sides guided by a support 8 fixed to the insulating support plate 1.2.

This movable connector 7 is connected by a flexible conductor 9 to a support tOA supported between the insulating support plates 1.2.

The other end of the connector 4 is also supported by a similar support 10B. Note that 4a is a bolt for fixing the connector 4, and 9a is a bolt for fixing the flexible conductor 9. Further, one end of an insulating joint 11 is directly connected to the movable terminal 5a of the vacuum valve 5, a rod 12 extends from the other end, and a contact force spring 13 is inserted through the rod 12. The L-shaped link 14 is rotatably supported by a pin shaft 16 on a support 15 supported by the insulating support plates 1 and 2. , and one end of the L-shaped link 14 engages with the upper side of a roller 23 which is pivotally supported by a pin shaft 22 at the lower end of the rod 12, and receives the lower end of the contact force spring 13. On the other hand, the other end of this L-shaped link 14 is connected to the drive rod 1 of the opening/closing operation section 17.
It is pin-coupled to 8. The opening/closing operation section 17 includes a cylindrical electromagnetic coil 19, an iron core 20F that closes one end of the hollow part of the electromagnetic coil 19, and a yoke 20Y arranged around the electromagnetic coil 19.

The driving rod 1 moves through the hollow part of the electromagnetic coil 19.
8 and a return spring 21 that applies force to the outside of the electromagnetic coil to the armature 18F.

Next, let me explain the operation of a vacuum electromagnetic contactor.

When the electromagnetic coil 19 is excited, the armature 18F moves against the return spring 21 due to the attractive force of the iron core 20F in a direction that reduces the dimension of the gap 6 with the iron core 20F. This operation causes the L-shaped link 14 to rotate counterclockwise about the pin shaft 16. At this time, one end of the L-shaped link 14 strongly presses the contact force spring 13 in the compression direction,
The insulating joint 11 is raised to push up the open movable terminal 5a. This operation completes the closing operation.

On the other hand, the opening operation is performed when the electromagnetic coil 19 is demagnetized.

The armature 18F is restored by the force of the return spring 21, causing the L-shaped link 14 to rotate clockwise. At this time, the L-shaped link 14 is connected to the roller 23 provided at the lower end of the rod 12.
By pressing down the rod 12, the movable terminal 5a is lowered via the insulating joint 11, and the opening operation is completed. In addition to the function of applying contact force to the contacts in the vacuum valve 5, the contact force spring 13 also serves to absorb the contact closing shock immediately after closing (suppressing closing chatter), and to provide overtravel that allows the movable contact to follow when the contact wears out. It also has an effect.

Further, reference numerals 24 and 25 indicate interlocking auxiliary contacts, which are used to confirm the closing operation, etc., and are used for sequence control.

By the way, in the above embodiment, the opening/closing operation is performed by electromagnetic force, but the opening/closing operation section 17 is configured as a pneumatically operated air cylinder to perform the opening/closing operation by pneumatic force. It is also possible.

Furthermore, the shape of the pair of insulating support plates 1 and 2 is as shown in FIGS. The folded portions of the insulating support plates 1 and 2 are combined to form a container shape. By configuring the pair of insulating support plates 1 and 2 as described above, the vacuum valve 5, the opening/closing operation section 17, and the parts connecting these are covered. Note that 26 is a terminal block.

As explained above, according to the embodiment of the present invention, first, one of the vacuum valve 5 and the opening/closing operation section 17 is disposed approximately at right angles to the other end, so that it is not necessary to arrange them side by side as in the conventional case. As a result, the overall width and height can be reduced.

In addition, since the vacuum valve 5, the opening/closing operation part 17, and the members connecting them are supported at both ends by the pair of insulating support plates 1.2, the overall rigidity is improved and the accuracy is reduced. Reliability can be increased.

Further, folded portions 1a to ld, 2a are provided on the insulating support plates 1 and 2.
By providing ~2d, the dustproof effect is improved, dust is prevented from adhering to the vacuum valve 5, and the vacuum valve 5 can be protected from external force.

In addition, since a roller 23 is pivotally supported at the lower end of the rod 12 and one end of the L-shaped link 14 is engaged with this roller 23, the operation becomes smooth.

By the way, although the above embodiment uses one vacuum valve 5, it can also be applied to one in which a plurality of vacuum valves are arranged in parallel.

〔Effect of the invention〕

According to the present invention, it is possible to obtain a small vacuum contactor with reduced width and height.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a vacuum electromagnetic contactor according to an embodiment of the present invention, Fig. 2 is a partially broken right side view of Fig. 1, and Fig. 3 is a vacuum electromagnetic contactor according to another embodiment of the invention. A front view showing
Figure 4 is a right side view of Figure 3. Figure 5 is a rear view of Figure 3, Figure 6 is a front view of a conventional vacuum magnetic contactor, Figure 7 is the right side of Figure 6, and Figure 8 is another conventional vacuum magnetic contactor. Front view showing 1. FIG. 9 is a right side view of FIG. 8. 1.2... Insulating support plate, 5... Vacuum valve, 12...
・・・0th 10th Folding λ Concave 60th 10th Tree 80 High School 9th Figure

Claims (1)

[Scope of Claims] 1. In a vacuum contactor that opens and closes a vacuum valve by driving an opening/closing operation part, the vacuum valve and the opening/closing operation are arranged such that the axis of the vacuum valve and the axis of the opening/closing operation part intersect. A vacuum contactor characterized by arranging parts. 2. The vacuum contactor according to claim 1, wherein the vacuum valve and the opening/closing operation section are connected by an L-shaped link. 3. The vacuum contactor according to claim 1, wherein the vacuum valve and the opening/closing operation section are supported by a pair of insulating support plates arranged on the left and right sides. 4. The vacuum contactor according to claim 3, wherein the pair of insulating support plates have a folded portion on the periphery that covers the vacuum valve and the opening/closing operation section.