JPH025319A - Load switch - Google Patents

Abstract

PURPOSE:To obtain a load switch of a simple structure and a compact size in which the loaded and unloaded condition can be measured with eye by composing the switch with a rotary disk as a main component as a cam, and with a disconnecting switch and a contact unit composed integrally. CONSTITUTION:In a disconnecting switch (A), a throwing-in pin 3 is moved from a cutting groove P to the outer circumferential direction of a rotary disk 2 by rotating a handle 13 clockwise. At the same time, blades 6 approach to receivers 7, and when the pin 3 rides on the outer periphery of the disk 2, the disconnecting switch (A) is turned on. By rotating the handle 13 further, the pin 3 is also rotated by the rotation of the disk 2. But the roller of the pin 3 is rolled in a cutting (d). And by rotating the handle furthermore, a pin 2a of the disk 2 put in the U-shape groove (b) of a lever 12, and when the angle of the lever 12 is made 180 deg. at the depth of the dead point, the lever 12 is turned to the V-shape in the inverse side, a driving shaft 9 is operated, and a power source side of a contact unit (B) is turned on.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a disconnector and a vacuum contactor (hereinafter simply referred to as a contactor).
This relates to a load switch that is integrally constructed.

[Conventional technology]

Generally, the load switching of a high voltage circuit is performed by a combination of a disconnector and a contactor, or by an air load switch.

The former tends to be expensive, takes up a lot of space, and has problems such as the need to use advanced devices with complex relay configurations such as contactors if they are used infrequently. be.

Moreover, the latter is relatively short in terms of life, and furthermore, an arc occurs in the air when opened.

[Problem that the invention seeks to solve]

If the disconnector is opened under high voltage and load conditions, an arc may occur and cause an accident, so it is being considered that the disconnector should be opened only after the disconnector is in a no-load condition. Therefore, if the disconnector and contactor were installed together in one place, it would be possible to visually determine whether a load is being applied or not, but of course there would be problems as mentioned above and common parts. However, there were problems in terms of miniaturization of the device and reduction of costs.

The present invention was devised in view of the above-mentioned points, and its purpose is to achieve a simple structure and miniaturization.
The purpose of the present invention is to provide a load switch that can reduce costs and also allow visual measurement of load and no-load by integrating the two so as not to cause human disasters.

[Means for solving problems]

In other words, the means for achieving this purpose is to cut a load switch consisting of a disconnector and a vacuum contactor into one end of a 9-circumference concentrically with the rotating shaft for opening and closing operations of the disconnector. a rotating disk having a groove, a pin and a stopper;
Near the outer periphery of the side surface of this rotating disk, a presser plate having an arc having the same diameter as the rotating disk and having a notch in a part of the arc into which one feeding pin fits, and the feeding pin are attached. a crank that engages with a rotating shaft for opening and closing the disconnector;
A lever whose pin enters a U-shaped groove as the rotating disc rotates, and one end of this lever is pivoted using a pin, and the other end drives a movable electrode of a vacuum switch valve of the vacuum contactor. The lever is comprised of a crank that engages with the drive shaft, and a spring that is provided so that when the pin enters the U-shaped groove, the lever and the crank form a dogleg shape or an inverted dogleg shape. .

In addition, instead of the stopper, various means are included, such as using a torsion mechanism that acts clockwise on the input pin, such as a spiral spring, to prevent the input pin from coming off from the notch.

[For production]

Its operation will be explained in detail in the following embodiments.

〔Example〕

Hereinafter, one embodiment of the load switch of the present invention will be described in detail based on the drawings.

FIG. 1 is an overall schematic diagram showing one embodiment of the load switch of the present invention, and in FIG. Cut groove P at one end,
A rotating disk 2 having a pin h, a stop, and a bar, and a notch i near the outer periphery of the side surface of the rotating disk 2 that has an arc q having the same diameter as the rotating disk 2 and into which the input pin 3 is fitted.
d is a presser plate 4 provided on a part of the circular arc, a crank 5 to which a closing pin 3 is attached and engages with a rotating shaft 1 for opening/closing the disconnector (a), and a pin 2a attached to a rotating disk 2. A lever 12 that enters a U-shaped groove as it rotates is pivoted to one end of this lever 12, and the other end engages with a drive shaft 9 that drives a movable electrode 8a of a vacuum switch valve 8. The lever 12 and the crank 15 form a dogleg shape or a dogleg shape on the opposite side when the pin is inserted into the U-shape mb.

In addition, the disconnector (a) has a blade 14 on the movable side and a receiver 7 on the fixed side.
The movable electrode 8 of the vacuum switch valve 8 is composed of a contactor (part of which is shown in the perspective view of FIG. 2).
A is attached to the drive shaft 9, and the other side of the fixed electrode is connected to a load (not shown).

Next, to explain the structure of the main part of the present invention in a little more detail, the rotary disk 2 is provided with a cut groove P at one end on the circumference, as shown in FIGS. 1 and 3. A pin 2a is welded to the notched groove P on the clockwise side. Further, a stopper 2b, which will be described later, is provided near the cut groove P of the rotary disk 2 in the counterclockwise direction. Further, a presser plate 4 is fixed to the main body 10, which is provided with an arc q having the same diameter as the rotary disk 2, and in which a notch id into which a later-described input pin 3 is fitted is provided in a part of the arc q. Then, the cut groove P of the rotary disk 2 engages with the arc q and the notch id of the presser plate 4, and the relationship with the rotary shaft 1 of the Shinjiki (a) is as shown in FIG. A charging bin 3 is fixed to one end of the constituent piece 5a, and a roller 11 is inserted into the charging bin 3 so that it can smoothly slide on the surface of the arc q and notch d of the presser plate 4. - The rotating shaft 1 is fixed to the other side of the -piece 5a.

5b is rotatably supported by a bottle or the like.

Next, a configuration in which the bottle 2a of the rotary disk 2 enters the U-shaped groove of the lever 12 to open and close the vacuum switch valve 8 will be explained based on FIG. Note that a structure in which a spring is provided so that the shape changes from a dogleg shape to the opposite doglegged shape when it passes the dead center is well known, so a detailed explanation will be omitted. Further, on the front surface of the lever 12 shown in FIG.
However, what is shown here is without it.

That is, a U-shaped groove is provided at one end of the lever 12, and a crank 15 is provided at the other end forming a dogleg shape.
These are rotatably attached to a bin 16 on a plate fixed to the body 10. As the pin goes deeper into the U-shape mb, the dogleg-shaped angle becomes larger, and when the angle reaches 180°, it instantly becomes an inverted dogleg-shape, and
The spring 6 is applied to the lever 12 so that the drive shaft 9 acts. It is attached to both ends of the crank 15. Note that the mechanism for rotating the drive shaft 9 is not limited to this, and includes various types of means. Also, instead of the handle 13, a rotating disk 2 is operated by a motor.
Sometimes it is made to rotate.

Next, the operation of the load switch configured as described above will be explained.

FIG. 1 shows the state before the power is turned on, and the disconnector (A) and the contactor (0) shown in FIG. 2 are in an open state.

At this time, the input bin 3 has entered the cut groove P of the rotary disk 2.

Now, first of all, to input the disconnector B), when the handle 13 is rotated clockwise t, the input bottle 3 starts to move from the cut groove P toward the outer circumference of the rotary disk 2. At the same time, the blade 14 gradually approaches the receiver 7, and when the input bottle 3 rides on the outer periphery of the rotating disk 2, the disconnector (a) is completely closed by the crank 5.

When the handle 13 is further rotated, the input bin 3 becomes stationary at that position because the input of the disconnector (a) has been completed. Then, by the rotation of the rotary disk 2, the input bin 3 is
rotates clockwise at the same time. However, if the charging bin 3 is deviated from the arc q due to this rotation, the charging bin 3, that is, the roller 11 shown in FIG. When the handle 13 is further rotated, the bin 2a of the rotary disk 2 enters the U-shaped mbi cut into the lever 12, as shown in FIG. When the angle reaches the dead center depth of 180°, the lever 12 becomes dogleg-shaped on the opposite side, the drive shaft 9 fixed to the crank 15 is activated, and the power source of the contactor (0) is turned on. When the power is turned on, voltage is applied to the load.

Next, when releasing the power from the powered-on state, the handle 13 is rotated counterclockwise. This action is the opposite of when it is turned on, and first the contactor (01) is released, and then the disconnector (A) is released.Here, when the disconnector (A) is released, the crank 5 is As shown in the figure, since it is attached only to the rotating shaft l, the input bin 3 that has entered the notch mP
cannot move, and the crank 5 is pushed counterclockwise and deviates from the arc q of the holding plate 4. Therefore, a stopper 5 is provided as shown in FIG. 3 to prevent further movement.

〔Effect of the invention〕

As explained above, according to the present invention, the disconnector (a) and the contactor (b) are integrally constructed, so the installation locations of the contactor and disconnector are separated from each other as in the conventional case, and the contactor is installed one by one. After confirming the release, I checked the disconnector installed at another location, but this was not necessary. b) can be input or released. All of these have an F&J2 configuration with the rotating disk 2 as the cam as the main component, so even an amateur can operate them, and since the applied voltage is reliably released from the load and the disconnector (A) is released, arcing occurs. There is nothing to do, and this will not cause a human disaster.

Furthermore, by integrating the two components, not only was it possible to achieve a smaller size, but also a cost reduction.

[Brief explanation of the drawing]

Fig. 1 is an overall schematic configuration diagram showing one embodiment of the load switch of the present invention, Fig. 2 is a partial main perspective view of the contactor, Fig. 3 is an explanatory diagram of the main part of the present invention, Fig. 4 5 is a partial main perspective view of the disconnector, and FIG. 5 is an explanatory diagram for explaining the opening and closing action of the contactor. 1... Rotating shaft, 2... Rotating disk, 3.
...Input bin, 4...Press plate, 5.15
...Crank, 6...Spring, 7...
...Uke, 8...Vacuum switch, Chipalbu, 9.
...Drive shaft, 10...Main body, 11...
...Roll, 12...Lever, 13...
・Handle, 14...Blade, 16...Bin, 2a...Pin, 2b...Stopper, P...Self-cut groove, q... ·····arc,
d...Notch capital, (a)...Disconnector, (b)...contactor, 8a...movable electrode, b...・U-shaped groove・ Tame 20

Claims (2)

[Claims] (1) In a load switch consisting of a disconnector and a vacuum contactor, a rotary shaft concentrically with the rotating shaft for opening/closing operation of the disconnector,
A rotating disk having a cut groove, a pin, and a stopper at one end on the circumference, and a notch on the arc that has the same diameter as the rotating disk near the outer periphery of the side surface of the rotating disk and into which the input pin fits. A presser plate provided on a part of the U
A lever that fits into a U-shaped groove, a crank that is pivotally connected to one end of this lever with a pin, the other end of which engages with a drive shaft that drives a movable electrode of a vacuum switch valve of the vacuum contactor, and a crank that engages with a drive shaft that drives a movable electrode of a vacuum switch valve of the vacuum contactor; A load switch comprising a spring provided to form a dogleg shape or an inverted dogleg shape with a lever and the crank when operated to enter a groove. (2) In place of the stopper, a torsion mechanism that acts clockwise on the input pin is provided.
Load switch described in item 1).