JP7433214B2 - switch gear - Google Patents

Description

The present application relates to switchgear.

Power receiving equipment in buildings, factories, etc. is equipped with switchgear. The switchgear includes a switch that opens and closes a power supply path and an operating device having an electric operating mechanism. The opening/closing bar of the switch is operated via a link mechanism connected to the operating rod of the operating device. Conventional switch gear includes a transmission lever connected to an operating rod that moves linearly, a drive lever that rotates together with the opening/closing lever of the switch, and a connecting pin that connects the transmission lever and the drive lever. . Then, when the opening/closing operation of the opening/closing lever of the switch is not linked to the linear movement of the operating rod of the operating device, the connecting pin is removed (see, for example, Patent Document 1).

Japanese Patent Application Publication No. 2005-19175

Conventional switchgear converts linear motion of an operating rod into rotational motion of an opening/closing lever of a switch via a transmission lever and a drive lever. Therefore, the switch and the operating device need to be arranged side by side in the direction of linear drive of the operating rod. Therefore, it has not been possible to arrange the switch in a direction intersecting the direction of linear drive of the operating device. Due to such restrictions, there is little freedom in arranging equipment for downsizing the switchgear.

The present application was made in order to solve the above-mentioned problem, and the switch can be arranged in a direction intersecting the direction of linear drive of the operating device.

The switchgear of the present application includes a switch and an operating device that operates an opening/closing lever of the switch. The operating device includes a first rod that is linearly driven, a first lever that is connected to the first rod and is rotatable about a shaft, a second lever that rotates integrally with the shaft, and a second lever that is connected to the second lever. It has two rods and a removable connecting pin that connects the first lever and the second lever. The opening/closing lever of the switch is connected to the second rod.

In the switchgear of the present application, the operating device includes a first rod that is linearly driven, a first lever that is connected to the first rod and is rotatable about the shaft as a rotation axis, a second lever that rotates integrally with the shaft, and a second lever that is rotatable with the shaft as a rotation axis. It has a second rod connected to the lever and a removable connecting pin that connects the first lever and the second lever, and since the opening/closing lever of the switch is connected to the second rod, the operating device The switch can be placed in a direction that intersects the direction of linear drive.

FIG. 2 is a front view of the switchgear according to the first embodiment. FIG. 2 is a side view of the switchgear according to the first embodiment. FIG. 2 is an enlarged side view of the switchgear according to the first embodiment. FIG. 2 is a side view of the switchgear according to the first embodiment. FIG. 3 is a side view of a switchgear according to a second embodiment. FIG. 3 is an enlarged side view of a switchgear according to a second embodiment. FIG. 7 is an external view of a connecting pin according to Embodiment 3.

Hereinafter, a switchgear according to an embodiment for carrying out the present application will be described in detail with reference to the drawings. In each figure, the same reference numerals indicate the same or corresponding parts.

Embodiment 1.
FIG. 1 is a front view of a switchgear according to a first embodiment. As shown in FIG. 1, the switchgear 10 includes a switch 1 and an operating device 2. As shown in FIG. The switch 1 and the operating device 2 are arranged side by side in the horizontal direction and are fixed to a panel 3 that is a part of the housing of the switchgear 10. The operating device 2 includes an output lever 22 that rotates and protrudes from the side surface of the operating device main body 21, and a first rod 23 that has one end connected to the output lever 22 and is driven linearly by the rotation of the output lever 22. , a first lever 25 connected to the other end of the first rod 23 and rotatable about the shaft 24, two second levers 26a and 26b that rotate together with the shaft 24, and a second lever 26b. The second rod 27 has one end connected to the second rod 27, and a support frame 28 rotatably supports the shaft 24. The switch 1 includes an opening/closing lever 12 protruding from a side surface of a switch main body 11. The opening/closing lever 12 of the switch 1 is connected to the other end of the second rod 27 of the operating device 2 . The first lever 25 is connected to one of the two second levers 26a by a connecting pin 29. The connecting pin 29 is inserted into through holes provided in the first lever 25 and the second lever 26a, respectively. In FIG. 1, the connection portions at both ends of the first rod 23 and the second rod 27 with other members are shown in a simplified manner. In addition, in this embodiment, the second levers 26a and 26b are divided into two, but they may be configured as one piece.

FIG. 2 is a side view of switchgear 10 according to this embodiment. In FIG. 2, the operating device main body of the operating device 2 is omitted. Further, some parts such as the support frame 28 are omitted to make the explanation easier to understand. As shown in FIG. 2, the first lever 25 and the second lever 26a, which are connected by a connecting pin 29, are arranged facing each other with the shaft 24 at the center. The first lever 25 is rotatable about the shaft 24 as a rotation axis. On the other hand, the second levers 26a and 26b rotate integrally with the shaft 24. When the first lever 25 is connected to the second lever 26a by the connecting pin 29, the first lever 25 rotates together with the shaft 24 together with the second levers 26a and 26b.

Next, the operation of switchgear 10 according to this embodiment will be explained. In FIG. 2, the positions of the output lever 22 and the like shown by solid lines are the positions when the switch is opened, and the positions shown by broken lines are the positions when the switch is closed.

When the switch 1 is opened, that is, when the output lever 22 and the like move from the position shown by the broken line to the position shown by the solid line in FIG. 2, the output lever 22 of the operating device 2 rotates clockwise. As the output lever 22 rotates, the first rod 23 is linearly driven downward. The downward linear drive of the first rod 23 causes the first lever 25 to rotate clockwise about the shaft 24 . Since the first lever 25 and the second lever 26a are connected by the connecting pin 29, the second levers 26a and 26b rotate in the same direction as the first lever 25 rotates clockwise. The second rod 27 is linearly driven upward by the rotation of the second lever 26b. The upward linear drive of the second rod 27 rotates the opening/closing lever 12 of the switch 1, and the switch 1 is opened.

When the switch 1 is closed, that is, when the output lever 22 and the like move from the position shown by the solid line to the position shown by the broken line in FIG. 2, the output lever 22 of the operating device 2 rotates counterclockwise. FIG. 3 is an enlarged side view of the first lever 25 and the second levers 26a, 26b when they are closed. As shown in FIG. 3, the counterclockwise rotation of the output lever 22 of the operating device 2 causes the first lever 25 and the second levers 26a, 26b to rotate counterclockwise. The second rod 27 is linearly driven downward by the rotation of the second lever 26b. The downward linear drive of the second rod 27 rotates the opening/closing lever 12 of the switch 1, and the switch 1 is closed.

The switch gear configured in this manner transfers the linear drive of the first rod that is linked to the output lever of the operating device to the second rod that is in the opposite direction to the linear drive direction of the first rod via the first lever and the second lever. Can be converted to linear drive of the rod. As a result, in the switchgear of this embodiment, the switch can be arranged in a direction intersecting the direction of linear drive of the operating device.

In a conventional switchgear, a switch and an operating device are arranged vertically side by side. Therefore, in the conventional switchgear, it has been difficult to reduce the size in the vertical direction. In the switchgear of this embodiment, since the operating device and the switch can be arranged side by side in the horizontal direction, the size in the vertical direction can be reduced.

Furthermore, when a plurality of switches are arranged within the switchgear, it is necessary to arrange the switches in a horizontal direction. When multiple switches are arranged horizontally, it is necessary to branch or crank the main circuits connected to the switches. Therefore, there was a problem that the main circuit room became large. In the switchgear of this embodiment, when a plurality of switches are arranged, the plurality of switches can be arranged side by side in the vertical direction, so the main circuit room can be made smaller.

On the other hand, for testing, maintenance, etc. of the switchgear 10, it is necessary to disconnect the switch 1 and the operating device 2 from each other. In that case, the linkage between the switch 1 and the operating device 2 can be disconnected by pulling out the connecting pin 29 and releasing the connection between the first lever 25 and the second lever 26a. FIG. 4 is a side view of the switchgear with the connecting pin 29 pulled out. In FIG. 4, the positions of the output lever 22, the first rod 23, and the first lever 25 shown by solid lines are the positions when the switch 1 is closed, and the positions shown by broken lines are the positions when the switch 1 is opened. It's the location. On the other hand, in FIG. 4, the positions of the opening/closing lever 12, the second rod 27, and the second levers 26a, 26b shown by solid lines are the positions when the switch 1 is opened.

Assume that in the switchgear with the connecting pin 29 pulled out, the operating device 2 is inadvertently operated while the switch 1 is open, and the output lever 22 is rotated counterclockwise. That is, in FIG. 4, it is assumed that the output lever 22 moves from the position shown by the broken line to the position shown by the solid line. At this time, the first lever 25 rotates counterclockwise, but the second levers 26a and 26b do not rotate because the connecting pin 29 is removed. As a result, the opening/closing lever 12 of the switch 1 is not interlocked with the rotation of the output lever 22 of the operating device 2, and the switch 1 is maintained in an open state.

In the switchgear configured in this way, the first lever and the second lever are connected by a removable connecting pin, so when testing or maintaining the switchgear, the connecting pin can be pulled out and connected to the first lever. The connection with the second lever can be released. Therefore, even if the operating device is inadvertently operated, the opening/closing lever of the switch does not operate in conjunction with the operating device, and malfunction of the switch can be prevented.
In addition, in the switchgear of this Embodiment, although the number of connection pins is one, it may be two or more.

Embodiment 2.
FIG. 5 is a side view of the switchgear according to the second embodiment. FIG. 5 is a side view of the switch operating device when the connecting pin is pulled out. In FIG. 5, the positions of the opening/closing lever 12, the second rod 27, and the second levers 26a, 26b shown by solid lines are the positions when the switch is opened. The operating device 2 of this embodiment includes a storage hole 28a in the support frame 28 in which a connecting pin 29 can be stored. As shown in FIG. 5, the storage hole 28a is provided at a position where the connecting pin 29 stored in the storage hole 28a can prevent rotation of the second lever 26a. By inserting the connecting pin 29, which has been pulled out to disconnect the first lever 25 and the second lever 26a, into the storage hole 28a, rotation of the second levers 26a and 26b can be inhibited.

The switchgear configured in this manner is provided with a storage hole 28a for storing the connecting pin 29 that is pulled out to release the connection between the first lever 25 and the second lever 26a during testing, maintenance, etc. Therefore, loss of the connecting pin 29 can be prevented. Furthermore, since the storage hole 28a that stores the connecting pin 29 is located at a position that inhibits rotation of the second lever 26a, malfunction of the switch 1 can be more reliably prevented.

In this embodiment, the storage hole 28a is provided at a position where rotation of the second lever 26a can be suppressed. The storage hole 28a may be provided at a position where rotation of the second lever 26b can be suppressed. Further, in the present embodiment, the storage hole 28a is provided in the support frame 28, but the storage hole 28a may be provided at a position where rotation of the opening/closing lever 12 of the switch 1 is suppressed. Furthermore, when there are two or more connecting pins 29, it is preferable to provide a plurality of storage holes 28a in accordance with the number of connecting pins 29.

FIG. 6 is a side view of another switchgear according to this embodiment. FIG. 6 is an enlarged side view of the first lever 25 and the second lever 26a when the connecting pin 29 is housed in the housing hole 28a. As shown in FIG. 6, a projecting portion 26c may be provided on the second lever 26a at a position overlapping with the storage hole 28a, and a connecting pin through hole 26d through which the connecting pin 29 passes may be provided in the projecting portion 26c. By penetrating the connecting pin through hole 26d and inserting the connecting pin 29 into the storage hole 28a, rotation of the second lever 26a can be more reliably inhibited.
In addition, when the storage hole 28a is provided at a position where rotation of the second lever 26b can be suppressed, the second lever 26b may be provided with an overhang portion 26c and a connecting pin through hole 26d. Further, when there are two or more connecting pins 29, it is preferable that a plurality of connecting pin through holes 26d are provided in accordance with the number of connecting pins 29. Note that the connecting pin through hole 26d only needs to be provided at a position that overlaps with the storage hole 28a, so if the storage hole 28a is provided at a position that overlaps with the second lever 26a or 26b, the overhanging portion 26c is not necessarily provided. There's no need.

Embodiment 3.
In the switchgear of the third embodiment, the connecting pins inserted into the through holes provided in the first lever and the second lever are prevented from falling off. FIG. 7 is an external view of the connecting pin according to this embodiment. As shown in FIG. 7, the connecting pin 29 of this embodiment has a collar portion 29b having an outer diameter larger than the outer diameter of the main body shaft 29a near one end of the main body shaft 29a, and a collar portion 29b having an outer diameter larger than the outer diameter of the main body shaft 29a. It has a locking piece 29c inserted into a groove-shaped notch formed at the other end. The locking piece 29c is rotatably held with respect to the main body shaft 29a inside the groove-shaped notch with the rotation shaft 29d as the center of rotation. Further, the length in the longitudinal direction of the locking piece 29c is set to be larger than the outer diameter of the main body shaft 29a. Further, the length in the axial direction from the flange portion 29b of the main body shaft 29a to the notch portion is set to be longer than the length of the through hole into which the connecting pin 29 is inserted.

When the connecting pin 29 is inserted into the through hole, the longitudinal direction of the locking piece 29c is oriented in a direction parallel to the axial direction of the main body shaft 29a. After the connecting pin 29 is inserted into the through hole, the locking piece 29c is rotated so that the longitudinal direction of the locking piece 29c is oriented in a direction intersecting the axial direction of the main body shaft 29a. Therefore, after the connecting pin 29 is inserted into the through hole, the collar portion 29b and the locking piece 29c act as a barrier to prevent the connecting pin 29 from falling out of the through hole.

By using the connecting pin configured in this way, it is possible to prevent the connecting pin from falling off when the first lever and the second lever are connected. Furthermore, when the storage hole formed in the support frame is a through hole, it is possible to prevent the connecting pin stored in the storage hole from falling off.

Although this application describes various exemplary embodiments, various features, aspects, and functions described in one or more embodiments may be limited to the application of particular embodiments. Rather, they are applicable to the embodiments alone or in various combinations.
Therefore, countless variations not illustrated are envisioned within the scope of the technology disclosed herein. For example, this includes cases where at least one component is modified, added, or omitted, and cases where at least one component is extracted and combined with components of other embodiments.

1 switch, 2 operating device, 3 panel, 10 switch gear, 11 switch main body, 12 opening/closing lever, 21 operating device main body, 22 output lever, 23 first rod, 24 shaft, 25 first lever, 26a, 26b second lever, 26c overhang, 26d connecting pin through hole, 27 second rod, 28 support frame, 28a storage hole, 29 connecting pin, 29a main body shaft, 29b collar, 29c locking piece, 29d rotation shaft.

Claims (4)

A switchgear comprising a switch and an operating device for operating an opening/closing lever of the switch,
The operating device includes a first rod that is linearly driven, a first lever that is connected to the first rod and is rotatable about a shaft, a second lever that rotates integrally with the shaft, and a first lever that is connected to the first rod and is rotatable about a shaft. a connected second rod; and a removable connecting pin that connects the first lever and the second lever;
The switchgear characterized in that the opening/closing lever of the switch is connected to the second rod. The operating device further includes a support frame that rotatably supports the shaft, the support frame is provided with a storage hole that can accommodate the connection pin, and the storage hole is configured to accommodate the connection pin accommodated in the storage hole. The switchgear according to claim 1, wherein the second lever is provided at a position where rotation of the second lever can be inhibited by a pin. The second lever has a through hole through which the connecting pin can pass through, at a position overlapping the storage hole in a position where the second lever is prevented from rotating by the connecting pin stored in the storage hole. The switchgear described in 2. The switchgear according to any one of claims 1 to 3, wherein the connecting pin has a collar portion at one end and a locking piece rotatably provided at the other end. .

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