JP6692513B1 - Vacuum switch and switchgear - Google Patents

Abstract

In the face plate (10) arranged on the front surface portion (20) of the vacuum switch (100) housed in the switch gear (200), the upper plate (1) and the lower plate (2) are engaged with each other by the engaging portion (3). ) Is an integrated structure. The end of the first flat surface (1a) of the upper plate (1) and the end of the second flat surface (2a) of the lower plate (2) are butted to form a series of flat surfaces (10a). It The upper plate (1) covering the front of the fuse (40), which is a replacement part of the vacuum switch (100), is rotatably held with the engaging portion (3) as a fulcrum, and is opened by the rotation. Sometimes the fuse (40) is exposed.

Description

  The present application relates to a vacuum switch and a switchgear that houses the vacuum switch.

  A vacuum switch such as a vacuum circuit breaker or a vacuum electromagnetic contactor is used while being housed in a switch gear. The vacuum switch housed in the switch gear is configured to be pulled out to the front side at the time of maintenance, and a front face thereof is provided with a face plate for protecting the inside (for example, refer to Patent Document 1).

JP 2010-263747 JP

  With conventional vacuum switches, it is necessary to completely remove all face plates that hinder work during maintenance such as fuse replacement.After maintenance work, face plate attachment work is required. Was needed.

  The present application has been made in order to solve the above problems, and provides a vacuum switch with good workability that does not require the work of removing and attaching the face plate at the time of maintenance. It is an object of the present invention to provide a switchgear that stores a container and has good manageability.

A vacuum switch according to the present invention includes a vacuum valve housed in a switchgear and having a fixed contact and a movable contact built therein, a fuse connected to the fixed contact of the vacuum valve, and a face plate for protection on a front face portion. In the vacuum switch provided with, the face plate has a first plate and a second plate connected through an engaging portion, and the end portion of the first plate and the second plate are connected to each other. An end of the plate is abutted against each other to form a series of flat parts, the first and second plates are respectively arranged on the upper and lower parts of the face plate, and the first plate supports the engaging part as a fulcrum. It is characterized in that it is rotatably held and the fuse is exposed during rotation.
The switchgear according to the present application accommodates the above vacuum switch.

According to the vacuum switch of the present application, since the fuse can be exposed by rotating the first plate during maintenance, the work of removing and attaching the face plate is unnecessary, and the workability can be improved. Becomes
Further, according to the switchgear of the present application, the workability of the housed vacuum switch is good, and therefore the management is easy.

FIG. 3 is an overhead view of the vacuum switch according to the first embodiment. FIG. 2 is an enlarged side view of a main part of a front surface portion of the vacuum switch of FIG. 1. It is a perspective view which shows the open state of a face plate. It is a perspective view showing a lower part of a face plate. FIG. 7 is an internal side view of a face plate according to the second embodiment. FIG. 9 is a perspective view of a face plate according to a third embodiment. It is a front view of the switchgear which accommodated the vacuum switch of Embodiments 1 to 3.

Embodiment 1.
A vacuum switch 100 and a switchgear 200 accommodating the vacuum switch 100 according to Embodiment 1 of the present application will be described with reference to FIGS. 1 to 4 and 7.
FIG. 1 is an overhead view of the vacuum switch 100 according to the first embodiment, and shows a configuration in which a face plate 10 is arranged in a region covering the front of a fuse 40, which is one of the internal components.
FIG. 2 is an enlarged side view of an essential part of the front surface portion 20 including the face plate 10 of the vacuum switch 100 of FIG. 1, and includes an upper plate 1 (first plate) and a lower plate 2 (second plate) that form the face plate 10. 2) is connected (integrated) via the engaging portion 3.
FIG. 3 is a perspective view of the front face portion 20 of the vacuum switch 100, showing an open state of the face plate 10, with respect to the lower plate 2 fixed to the main body of the apparatus (vacuum switch 100). The upper plate 1 is tilted at an angle of 90 degrees.
FIG. 4 is a perspective view showing a lower part of the face plate 10. Each of the left and right side surfaces 2b of the lower plate 2 has a hole 21 for a bolt for arranging a fitting member (bolt 32). It is a figure which shows the state formed.
FIG. 7 is a front view of the switchgear 200 showing a state in which the vacuum switch 100 of the present application is housed in the housing chamber of the housing 200a. When a door is provided on the front surface of the housing 200a, the door is provided. It is the figure which showed the state which opened and opened and observed the inside from the front.

In the vacuum switch 100 according to the first embodiment, the entire front surface of the device is covered with the front surface portion 20. When the vacuum switch 100 is housed in the switchgear 200 as shown in FIG. 7, the front portion 20 is exposed on the surface. During maintenance, the vacuum switch 100 is pulled out from the inside of the housing 200a of the switch gear 200 to the front side by rolling the wheels 50 provided on the bottom surface of the main body.
Here, for example, when the fuse 40 to be replaced is arranged on the depth side above the front surface portion 20, the face plate 10 covering the front of the fuse 40 hinders the work. Therefore, in the present application, only the upper plate 1 of the face plate 10 that closes a part of the front face portion 20 and the front side of the fuse 40 is configured to be rotatable (openable / closable) via the engaging portion 3, and thus the face plate A case will be described in which the fuse 40 is exposed and the maintenance work is performed without removing the fuse 10 from the apparatus body.

  As shown in FIG. 1, the front surface portion 20 of the vacuum switch 100 is composed of a face plate 10 arranged at an upper portion and an operation method display portion 11 arranged at a lower portion. The operation method display unit 11 is a plate that displays the operation method and the points to be noted of the vacuum switch 100, and the surface thereof is provided with a handle unit and the like used when the vacuum switch 100 is pulled out from the installation box. ing. The operation method display unit 11 is fixed to the apparatus main body side, and the face plate 10 is supported on the upper portion thereof.

  The face plate 10 fixed to the upper part of the operation method display unit 11 includes a lower plate 2 fixed to the upper end of the operation method display unit 11 and an upper plate 1 rotatably provided on the upper end side of the lower plate 2. Is equipped with. The lower plate 2 has a role as a fulcrum component when the upper plate 1 is fixed and rotated, and can be formed integrally with the operation method display unit 11.

The upper plate 1 is provided with a model number display section 1c in which information such as the model number of the apparatus is written at the center thereof, for example. A fuse 40 is fixed to the depth side of the upper plate 1 by a fuse fixing metal fitting 41, and the fuse 40 is exposed when the upper plate 1 rotates.
The upper plate 1 and the lower plate 2 each have a first flat surface portion 1a and a second flat surface portion 2a on the front side of the device.
In the face plate 10, the lower end of the first flat surface portion 1a and the upper end of the second flat surface portion 2a are butted against each other to form a series of flat surface portions 10a composed of the first flat surface portion 1a and the second flat surface portion 2a. Has been done.
In addition, the first flat surface portion 1a and the second flat surface portion 2a are abutted to each other so as to form a continuous flat surface to form the flat surface portion 10a. It is needless to say that it may be a surface portion, and the first flat portion 1a and the second flat portion 2a can cover the internal configuration.

  Further, as shown in FIGS. 2 and 3, side surface portions 1b and 2b are respectively extended so as to extend from the left and right end portions of the first flat surface portion 1a and the second flat surface portion 2a toward the depth side. The side surface portions 1b and 2b are integrally formed so as to intersect, for example, orthogonally intersect, the first flat surface portion 1a and the second flat surface portion 2a, and sandwich the first flat surface portion 1a and the second flat surface portion 2a, respectively. It is arranged opposite.

  As shown in FIG. 2, an elongated hole 31 (hole portion) is provided in the lower portion of the side plate 1b of the upper plate 1, but inside the side plate 1b in which the elongated hole 31 is formed, as described above, the lower plate 2 is provided. The upper portion of the side surface portion 2b is in a superposed state. Further, the cutout portion 1d is formed in a portion below the corner portion of the upper plate 1 where the first flat surface portion 1a and the side surface portion 1b are butted. The notch 1d serves not only as a slit that avoids interference between the upper plate 1 and the lower plate 2 during rotation, but also as a rotation stopper that regulates the rotation angle of the upper plate 1.

  In the example of FIG. 3, the insulator fixing frame 12 is arranged on the inner surface side of the first flat surface portion 1a of the upper plate 1, and both ends of the insulator fixing frame 12 are left and right side surface portions 2b of the upper portion of the lower frame 2. It is fixed with rivets inside. Since the bolts 32 forming the engaging portion 3 are arranged on the plate on which the side surface portion 2b and the insulator fixing frame 12 are superposed, it is possible to stabilize the fitted state of the bolt 32 and reinforce the engaging portion 3. it can.

  As shown in FIG. 4, for example, the left and right side surface portions 2b of the lower plate 2 are each formed in a shape protruding above the upper end of the second flat surface portion 2a, and the fitting member forming the engaging portion 3 is a bolt. In the case of 32, an opening for inserting the bolt 32, for example, a bolt hole 21 is formed on the upper end side of the side surface portion 2b. As illustrated in FIG. 3, a nut 32a is used to fix the bolt 32, and the nut 32a is arranged inside the side surface portion 2b.

  Here, instead of using the nut 32a for fixing the bolt 32, it is also possible to use a burring hole in which the inner peripheral surface of the bolt hole portion 21 is burred to form a spiral groove (screwed). .. When the burring hole is used, it is not necessary to dispose a fixing member such as the nut 32a on the inner surface side of the side surface portion 2b, so that the number of parts can be reduced.

  As shown in FIGS. 2 and 3, the lower end portion of the side surface portion 1b of the upper plate 1 is superposed on the outside of the side surface portion 2b protruding above the lower plate 2, and the upper plate 1 which is the superposed portion has a bolt. An elongated hole 31 for engaging 32 is formed. The long hole 31 is a part of the constituent elements of the engaging portion 3, and the upper plate 1 is long while the bolt 32 is engaged with the long hole 31 that is long in the vertical direction (vertical direction in the closed state). Sliding along the hole 31 enables the turning operation.

The state of FIG. 2 illustrates the case where the upper plate 1 is in a closed state, in which the flat portions of the upper plate 1 and the lower plate 2 are butted against each other, and the upper plate 1 and the lower plate 2 are fixed by the bolts 32. It shows the normal use condition. In the closed state, the bolt 32 is positioned above the elongated hole 31 formed in the side surface 1b of the upper plate 1.
At the time of maintenance work such as fuse replacement, the bolt 32 is loosened, and the upper plate 1 in the closed state is moved upward along the longitudinal direction (vertical direction) of the elongated hole 31 so that the bolt 32 is attached to the elongated hole 31. The fuse 40 can be exposed by tilting the upper plate 1 toward the front side with the engaging portion 3 as a fulcrum at the stage of contact with the lower portion.
At this time, as shown in FIG. 3, the notch portion 1d is formed by pushing the upper plate 1 which is tilted horizontally toward the front side toward the depth side along the direction of the long hole 31 (horizontal direction in this case). The front end of the side surface 2b of the lower plate 2 can be brought into contact with the abutting portion of the lower plate 2, and the open state can be stabilized by tightening the bolt 32.
After the fuse replacement or inspection, loosen the bolts 32, once pull the upper plate 1 to the front side, push the upper plate 1 back upward with the engaging portion 3 as a fulcrum, and return the first flat portion 1a and the second flat portion 1a. It is possible to return to the closed state shown in FIG. 2 by pushing down along the long hole 31 and tightening the bolt 32 in a state where the flat surface portion 2a is parallel.

Since the vacuum switch 100 according to the first embodiment has the above-described structure, it is not necessary to completely remove the face plate 10 when replacing the fuse 40 or performing an inspection. Sex is improved. Further, when the face plate 10 is opened / closed, the work of removing the fastening members such as the bolts for fixing the face plate 10 to the apparatus main body side does not occur, so it is possible to prevent an accident such as loss of the fastening member during the work. You can
Furthermore, since the switchgear 200 of the present application has a structure in which the vacuum switch 100 having good workability as described above is housed in the housing 200a, it is possible to improve manageability.

Embodiment 2.
Next, a second embodiment of the present application will be described with reference to FIG. In Embodiment 1 described above, the structure in which the elongated hole 31 of the engaging portion 3 is provided on the upper plate 1 side of the vacuum switch 100 has been described, but in Embodiment 2, the engaging portion 3 of the lower plate 2 side is provided. A structure will be described in which the long hole 31a is provided, and the bolt 32, which serves as a fitting member of the engaging portion 3, is fitted into the upper plate 1 side and engaged with the long hole 31.
FIG. 5 is an internal side view of the face plate 10 in the closed state according to the second embodiment, and shows a state in which the elongated hole 31a is opened in the side surface portion 2b of the lower plate 2.

  In addition, in the example of FIG. 5, the insulator fixing frame 12 is overlapped and fixed to the inner surface of the side surface portion 2b of the lower plate 2, and the elongated hole 31a is formed so as to penetrate through the insulator fixing frame 12 as well. There is. A portion of the long hole 31a that becomes the engaging portion 3 is in a stressed state during operation, but the engaging portion 3 of the side surface portion 2b should be formed so as to overlap the fixing portion of the insulator fixing frame 12. Thus, the frame itself can be reinforced. A bolt 32 is provided on the side surface portion 1b of the upper plate 1 and the nut 32a and the bolt 32 are tightened to fix the upper plate 1 and the lower plate 2 interposed therebetween.

  As shown in FIG. 5, in the face plate 10 in the closed state, the bolt 32 is located on the lower end side of the elongated hole 31 a of the lower plate 2. Then, at the time of maintenance, the bolt 32 is loosened and the upper plate 1 is pulled up along the long hole 31a, and with the bolt 32 in contact with the upper end of the long hole 31a, the upper plate 1 is moved forward with the engaging portion 3 as a fulcrum. Tilt 90 degrees to open. Here, by tightening the bolt 32, the open state can be stabilized. After maintenance such as replacement of the fuse 40, the upper plate 1 can be returned to the closed state by the reverse procedure.

Since the vacuum switch 100 according to the second embodiment has the structure as described above, only the bolt 32 of the engaging portion 3 is exposed to the outside of the upper plate 1 and the long hole 31a opened in the lower plate 2 is formed. Since it is not exposed to the outside, the appearance of the face plate 10 can be made clear and the appearance can be improved. Further, in the engaging portion 3 in which the lower portion of the side surface portion 1b and the upper portion of the side surface portion 2b are worn by the opening / closing operation, the effect of improving durability is provided by providing the elongated hole 31a penetrating the two stacked plates. Obtainable.
Further, since the switchgear 200 of the present application has the structure in which the vacuum switch 100 having excellent workability and durability as described above is housed, it is possible to obtain the effect of improving the manageability.

Embodiment 3.
Next, a third embodiment of the present application will be described with reference to FIG. In Embodiment 1 described above, the engaging portion 3 is provided between the upper plate 1 and the lower plate 2 to open and close the upper plate 1, and the upper plate 1 uses the engaging portion 3 located on the lower end side as a fulcrum. The configuration was such that only the opening operation of opening to the front was possible. In the third embodiment, not only the opening operation of the upper plate 1 using the engaging portion 3 of the above-described first or second embodiment, but also the first flat surface portion 1a of the upper plate 1 is connected to the left and right end portions. A configuration that enables the opening operation that opens to one side with the hinge 33 provided on the fulcrum as a fulcrum will be described. The vacuum switch 100 according to the third embodiment is characterized in that the operator can select either the opening operation by the engaging portion 3 or the opening operation by the hinge 33 according to the situation.

As shown in FIG. 6, the upper plate 1 constituting the face plate 10 has a first flat surface portion 1a and a side surface portion 1b (one of the left and right sides) separated from each other, and is configured as separate members. A hinge 33 that connects the first flat surface portion 1a and the side surface portion 1b to each other is provided at the end portion where the first flat surface portion 1a and the side surface portion 1b are butted against each other. The example of FIG. 6 shows a state in which the hinges 33 are provided at two positions, one above the other, but the number of hinges 33 is not limited to this.
In the face plate 10 thus configured, the upper plate 1 can be opened 180 degrees in the horizontal direction by using one of the left and right sides of the upper plate 1 where the hinges 33 are provided as a fulcrum.

  As for the left and right other end sides where the hinge 33 of the first flat surface portion 1a is not arranged, the side surface portion 1b is integrated with the first flat surface portion 1a as in the first or second embodiment. Is. Then, at the time of the opening operation, the bolt 32 arranged on the side surface portion 1b of the upper plate 1 on the side where the hinge 33 is not provided is removed to release the engagement on one side of the engaging portion 3 before the opening operation. After performing the maintenance, the first flat surface portion 1a is closed and fixed by the bolts 32, so that the closed state of the face plate 10 can be stably maintained.

  Here, the first flat surface portion 1a, which rotates about the hinge 33 as a fulcrum, is opened to the front side of the apparatus in a single-open state. Therefore, in order to control the open state of the first flat surface portion 1a, it is effective to dispose a stopper (not shown) serving as a rotation stop. The stopper can be formed, for example, by partially protruding the end of the side surface portion 1b on the hinge 33 side to the outside, has a surface portion parallel to the first flat surface portion 1a in the closed state, and The flat portion 1a can be provided so as to abut in a state of being rotated by 180 degrees.

With the above-described structure, when the upper plate 1 is operated within the range of 90 degrees in the vertical direction, the upper plate 1 is operated with the engaging portion 3 as a fulcrum, and the first flat surface portion 1a of the upper plate 1 is moved in the left-right direction 180. When operating within the range of degrees, it becomes possible to select the direction of the opening operation such that the hinge 33 is used as a fulcrum.
Therefore, in the vacuum switch 100 according to the third embodiment, the open state is selected to avoid the first flat surface portion 1a of the upper plate 1 from the front surface of the device to the left and right sides at the time of the opening operation using the hinge 33. However, in that case, the first flat surface portion 1a of the upper plate 1 does not have a form protruding toward the front side. Therefore, for example, there is an effect that a work space is easily secured and workability is good at the time of maintenance such as a worker entering a narrow passage.
Further, since the switchgear 200 of the present application is equipped with the vacuum switch 100 having good workability as described above, it is possible to improve the controllability thereof.

Although the present application describes various exemplary embodiments and examples, various features, aspects, and functions described in one or more of the embodiments apply to the particular embodiment. However, the present invention is not limited to this, and can be applied to the embodiments alone or in various combinations.
Therefore, innumerable variations not illustrated are envisioned within the scope of the technology disclosed herein. For example, it is assumed that at least one component is modified, added or omitted, and at least one component is extracted and combined with the components of other embodiments.

  DESCRIPTION OF SYMBOLS 1 upper plate, 1a 1st flat surface part, 1b, 2b side surface part, 1c model number display part, 1d notch part, 2 lower plate, 2a 2nd flat surface part, 3 engaging part, 10 face plate, 10a flat surface part , 11 operation method display section, 12 insulator fixing frame, 20 front surface section, 21 bolt hole section, 31, 31a long hole, 32 bolt, 32a nut, 33 hinge, 40 fuse, 41 fuse fixing bracket, 50 wheel, 100 Vacuum switch, 200 switchgear, 200a housing

Claims (9)

A vacuum valve housed in a switchgear and having a fixed contact and a movable contact built-in, and a fuse connected to the fixed contact of the vacuum valve,
In a vacuum switch with a front face plate provided for protection,
The face plate has a first plate and a second plate connected via an engaging portion, and an end portion of the first plate and an end portion of the second plate are abutted against each other. A series of flat portions are formed, and the first and second plates are respectively arranged on the upper and lower parts of the face plate,
A vacuum switch, wherein the first plate is rotatably held with the engaging portion as a fulcrum, and the fuse is exposed during rotation. The first and second plates are respectively extended to the left and right ends of the flat surface portion, and have side surface portions facing each other across the flat surface portion,
The engaging portion is vacuum switch according to claim 1, wherein the upper of the side portions of the lower and the second plate of the side surface portion of said first plate is provided in a region overlapping vessel. The vacuum switch according to claim 1 or 2 , wherein the first plate is opened with the engaging portion as a fulcrum, and the flat portion is held horizontally. The engaging portion is a fitting member disposed in the side surface portion of the second plate or the first plate in a hole portion opened in the side surface portion of the first plate or the second plate. The vacuum switch according to claim 2 , wherein the vacuum switch has a structure in which a coupling member is fitted. 5. The vacuum switch according to claim 4 , wherein the fitting member is a bolt, and the fitting member is fitted in a bolt hole formed in the side surface of the second plate or the first plate. The vacuum switch according to claim 5 , wherein the bolt hole is a burring hole that is threaded. The hole opened in the side surface of the first plate or the second plate is a long hole,
The fitting member arranged on the side surface portion of the second plate or the first plate is inserted into the elongated hole,
The vacuum switch according to claim 4, wherein the first plate is held so as to be slidable along the elongated hole. At one end on the left and right sides of the flat surface portion formed by the first plate, there is a side surface portion separated from the flat surface portion, and a hinge is provided between the flat surface portion and the side surface portion. ,
Vacuum switch according to claim 1, characterized in that the first plate structure portion by one of the flat portion is rotatably held as a fulcrum the hinge. A switchgear housing the vacuum switch according to any one of claims 1 to 8 .

Images