JPS6253892B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switch provided with a movable electrode that is detachable from a fixed electrode provided in a switch box.

An example of a switch with a conventional structure will be described with reference to FIG.
Then, the main circuit is opened and closed by inserting or removing the U-shaped movable electrode 5 from the fixed electrode 3b provided on the cable 4 lead-in side.

In the figure, 6 is a removable operating mechanism with a movable electrode 5.
Each time an opening/closing operation is performed, it is attached to an appropriate fixed part within the switch box 1. Further, 2a and 2b represent the generating lines of adjacent phases.

Before the operating mechanism 6 is attached to the switch box 1, a built-in spring is stored using an arbitrary winding handle (not shown), and the operating mechanism 6 is held in the stored power state by a stopper 6a. 7 is a release rod for removing the stopper 6a.

The operating mechanism 6 is connected to the movable electrode 5 by a pin 8, and when the stop 6a is removed by the release rod 7, the stored force of the built-in spring is released at once, and the movable electrode 5 performs a circuit opening or closing operation.

In such a conventional example, it is necessary to once remove the operating mechanism 6 each time the movable electrode 5 is attached or detached, which is very inconvenient in terms of maintenance.

Furthermore, since the operating mechanism 6 is attached and operated in front of the movable electrode 5, there is also the drawback that the operating space becomes large.

In the present invention, a mechanism part is attached to the upper part of the switch box so that the movable electrode can be operated horizontally, and the movable electrode can be attached and detached without being obstructed by the mechanism part. Examples will be explained below.

In FIG. 2, parts that are the same as those in the conventional structure are designated by the same reference numerals, and redundant explanation will be omitted.

In the figure, reference numeral 9 denotes an operating mechanism attached to the upper part of the switch box 1, and a built-in spring is energized by the operating handle 10.

9a is the output shaft of the operating mechanism 9, and the output lever 11
is fixed. The output lever 11 has the role of horizontally driving the movable electrode 5 in cooperation with the guide rail 12.

The configuration of the output lever 11 and guide rail 12 is as follows:
This will be explained with reference to FIG. 3, which shows an enlarged view of the main body of the switch.

3A is a front view of the switch, FIG. 3B is a side view, and FIG. 3C is a plan view.

Here, FIG. 3a shows an AA view of FIG. 3b. In these figures, the switch box 1, the bus bars 2, 2a, 2b, and the operating mechanism 9 are omitted.

A connecting rod 13 passes through the movable electrodes 5 of each phase and connects them together. Arms 13a are provided on both sides of the connecting rod 13.
is provided, and a roller 14 attached to the arm 13a
It is slidably guided by a guide rail 12 having a U-shaped cross section.

The guide rail 12 is connected to the fixed part 1 inside the switch box 1.
The arm 13a is attached and supported near the entrance where the arm 13a is inserted.
A roller 12a is provided to make it easier to insert a. Further, a notch 12b is provided on the lower surface of the guide rail 12 from near the entrance toward the back.

The output lever 11 has a cutout 11a at its tip, which is engaged with the connecting rod 13, and the output lever 1
As the movable electrode 5 rotates, the movable electrode 5
horizontally along the guide rail 12.

Next, the process of moving the movable electrode 5 to the closed circuit position and the open circuit position by the output lever 11 is shown in FIGS. 4a and 4b.
I will explain about it.

In FIG. 4a, the movable electrode 5 is connected to the fixed electrodes 3a and 3.
b, the connecting rod 13 of the movable electrode 5 is locked to the cutout 11a of the output lever 11, and the movable electrode 5 is held in the closed circuit position.

The fulcrum of the lever 16 and the output lever 11 is fixed to the output shaft 9a.

The lever 16 is connected to an arbitrary spring mechanism via a pin 17 and a rod 18. In such a state, when the operating mechanism is activated and an upward force is applied to the rod 18, the output lever 11 rotates counterclockwise via the lever 16 and the output shaft 9a, and the connection sandwiched between the cut portion 11a rotates. The rod 13 is the arm 13a
At the same time, the output lever 11 moves to the right in the drawing while being guided by the guide rail 12, and as shown in FIG. 4b, comes into contact with a stopper 19 attached to an appropriate location in the mechanism, so that the output lever 11 cannot rotate any further. Connecting rod 13
The position of the movable electrode 5 is regulated by the cut portion 11a, and the movable electrode 5 is stopped in an open state.

Next, the mechanism of attachment and detachment in the open position will be explained.

When it becomes necessary to remove the movable electrode 5 for inspection of the electrode section, remove the movable electrode 5 by lifting the front side (right side in the figure) of the movable electrode 5 in the open circuit position in FIG. 4b as shown by the arrow. Arms 13a on both sides
is the roller 12a provided at the entrance of the guide rail 12.
The arm 13a is tilted counterclockwise in the drawing with the fulcrum being the fulcrum, and the tip of the arm 13a is lowered below the notch 12b of the guide rail 12. At the same time, the connecting rod 13 is connected to the output lever 11.
It is now possible to remove the movable electrode 5 from the cutout 11a of the movable electrode 5 in the same position.
can be removed from the switch box 1. This state is shown in FIG. 4c.

Next, to attach the removed movable electrode 5, it is sufficient to perform the operation opposite to that described above.

That is, as shown in FIG. 4c, when the arm 13a is fully inserted into the guide rail 12 in the switch box 1 with the right side of the movable electrode 5 raised, and the movable electrode 5 is lowered horizontally, the connecting rod 13 is Engaged with the cut portion 11a, the movable electrode 5 is placed in the open position and preparation for the circuit closing operation is completed.

In order to perform the circuit closing operation from the open position shown in FIG. The movable electrode 5 is closed.

In the embodiments described so far, the output lever 11
Although the cut portion 11a of the output lever 11 is straight, the cut portion is shaped like a dogleg as shown in FIG. It is also possible to do this.

In addition, in order to make it easier to insert the connecting rod 13 of the movable electrode 5 in the removable position, one side of the two sides of the cutout on the inner fixed electrode side can be bent into an L shape, as shown in FIG. 5b. .

As explained above, according to the present invention, there is an advantage that the movable electrode can be easily attached and detached without removing the operating mechanism due to the simple structure, and it is also possible to easily lock the movable electrode to prevent it from falling off in the open position where there is no need to remove it. It has the advantage that it can be carried out reliably.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a conventional example, FIG. 2 is a side view showing an embodiment of the present invention, and FIG. 3 is an enlarged view of the main body of the switch, in which a is a front view, b is a side view, c.
is a plan view. FIG. 4 is a diagram showing the relationship between the output lever 11 and the movable electrode, in which a indicates the closed circuit position, b indicates the open circuit position, and c indicates the detachable position. Figures 5a and 5b show second and third embodiments of the output lever cutout, respectively. In the figure, 1 is a switch box, 3a and 3b are fixed electrodes, 5 is a movable electrode, 9 is an operating mechanism, 11 is an output lever, 11a is a cutout, 12 is a guide rail,
12b is a notch, 13 is a connecting rod, 13a is an arm,
19 is a stopper.

Claims (1)

[Claims] 1 The operating mechanism installed at the top of the switch box allows
In a switch that is opened and closed by a fixed electrode by horizontally moving a movable electrode provided at the bottom of the operating mechanism, arms are provided on both sides of a connecting rod that collectively connects the movable electrodes of each phase, and the arms are connected to the switch. The movable electrode is supported by slidingly fitting into the guide rails provided on both sides, and a cutout that can be engaged with the connecting rod is provided at the tip of the output lever of the operating mechanism, so that the upper output lever and the connecting rod are engaged. The first movable electrode is released from the fixed electrode.
In addition, the guide rail has a notch on the bottom near the arm insertion port, and by tilting the tip of the movable electrode downward in the open position, the connecting rod can be connected to the cutout. A switch characterized in that it is configured to be disengaged from engagement.