JP3293523B2 - Switchgear - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switchgear for opening and closing a high voltage circuit, and more particularly to a structure for mounting an insulating barrier portion of the switchgear.

[0002]

2. Description of the Related Art FIG.
FIG. 10 is a plan view showing a conventional switchgear similar to that shown in Japanese Patent Application Laid-Open Publication No. H10-209, and FIG. 9 and 10
In the figure, reference numeral 1 denotes a base, which is formed by combining L-shaped steels 1a and 1b and channel steels 1c and 1d, and fixing the four corners of the joint by welding or the like to form an integral body. Reference numerals 2a and 2b denote a pair of terminals which are electrically connected to a main circuit (not shown), and are supported insulated from the base 1 by an insulator 3 fixed to the base 1.
Reference numeral 4 denotes a blade, one end of which is rotatably supported by the terminal 2a and is also electrically connected, and the other end is formed so as to be able to contact and separate from the other terminal 2b. Terminal 2 above
The opening / closing unit 5 is constituted by a, 2b and the blade 4. This opening / closing unit 5 is used in a set or a plurality of sets are juxtaposed at a predetermined insulating interval. FIG. 9 shows an example in which three sets of opening / closing units 5 are juxtaposed.

[0003] Reference numeral 6 denotes a handle, 7 denotes a shaft which is rotated by the handle 6, 8 denotes a lever provided corresponding to the opening / closing unit 5 and one end of which is fixed to the shaft 7, and 9 denotes one end of which is turned to the other end of the lever 8. An insulating link movably connected and the other end rotatably connected to each of the blades 4. 10
Is an insulating barrier, which is disposed between the opening and closing units 5 and on both outer sides in the direction in which the opening and closing units 5 are arranged, and is attached to the base 1.

FIG. 11 is an enlarged sectional view taken along line XI-XI of FIG. A mounting member 11 and a mounting member 12 are screwed to the insulating barrier 10. Also, the channel 1 of the base 1
On the c side, the mounting member 13 is inserted into a screw hole provided in the channel steel 1c.
Is screwed. Then, the insulating barrier 10 is fixed to the base 1 by hooking the mounting member 11 on the channel steel 1 d of the base 1, assembling the insulating barrier 10 to the base 1, and screwing the mounting member 12 to the mounting member 13. .

Next, the operation will be described. When the handle 6 is turned, the blade 4 is turned around the connecting portion with the terminal 2a via the shaft 7, the lever 8, and the insulating link 9 to be connected to and separated from the terminal 2b, thereby connecting to the main circuit (not shown). Between the connected terminals 2a and 2b is closed or opened.

[0006] Since the insulating barrier 10 is provided between the opening and closing units 5 and on both outer sides of the opening and closing units 5, the terminals 2 a, which are charging parts of the opening and closing units 5 when a small animal such as a snake or a mouse invades. This is for preventing contact with the blade 2b and the blade 4 to prevent a ground fault or a short circuit accident, and also to prevent a human from being electrocuted.

Since the switchgear is usually mounted on a vertical wall in many cases, in order to facilitate mounting of the insulating barrier, the shape of the mounting members 11 and 12 is changed so that one of the mounting members 11 is used as a base. Although an example is shown in which it is configured to be hooked on the bracket 1, both may be shaped like the mounting member 12.

[0008]

The insulating barrier 10 may not be used depending on the installation environment and operating conditions of the switchgear. Further, after the product is shipped without the insulating barrier 10 and installed, it may be installed later at the request of the user due to a change in the use environment or the like. In such a case, the insulating barrier has to be mounted in a small place on the site with a slight gap between the opening and closing units, and there has been a problem that the mounting operation is difficult.

[0009] Further, the switching devices as shown in FIGS. 9 and 10 often mass-produce standard products corresponding to the voltage class in factories. In many cases, the base is provided with a screw hole for mounting an insulating barrier, and the base is shipped from a factory. Therefore, regardless of the presence or absence of the insulation barrier, all product bases must be provided with threaded holes for attaching the insulation barrier.
The cost of the switchgear increases, and it becomes expensive when the installation of the insulating barrier becomes unnecessary.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems. The mounting work is easy when the insulating barrier is to be mounted later, and the insulating barrier is not provided with a screw hole on the base side. An object of the present invention is to provide a switchgear capable of being mounted.

[0011]

According to a first aspect of the present invention, there is provided a switchgear having a pair of terminals conductively connected to a main circuit, and one end connected to one terminal of the pair of terminals. The opening / closing unit, which is rotatably supported and the other end of which is brought into contact with / separated from the other terminal by the rotating operation, is arranged side by side with one set or a plurality of sets separated by a predetermined insulating interval, and is insulated and supported on the upper surface of the base. In the switching device having an insulating barrier that is disposed between the opening and closing units or on both outer sides of the opening and closing unit and is attached to the base via the mounting member, the mounting portion of the mounting member and the insulating barrier is rotatable,
With the insulating barrier assembled at a predetermined position on the upper surface of the base, the mounting member is rotated to position the screw hole provided on the mounting member on the lower surface of the base, and the mounting provided on the base from the upper surface of the base. The insulating barrier is fixed to the base by tightening a screw into a screw hole of the mounting member through the hole.

According to the second aspect of the present invention, the mounting member and the mounting portion of the insulating barrier are rotatable, and the end of the insulating barrier is brought into contact with the upper surface of the base and assembled to a predetermined position. Is rotated so that the base is sandwiched between the mounting member and the end of the insulating barrier, and the engaging portion provided on the mounting member is engaged with the end of the insulating barrier to hold the base. It is fixed.

According to the third aspect of the present invention, the mounting member is slidably mounted in a long hole provided in the insulating barrier, and the mounting member is slid in a state where the insulating barrier is combined with a predetermined position on the upper surface side of the base. Then, the insulating barrier is fixed to the base by fitting the cut portion provided on the mounting member into the base and fixing the cut.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of the switchgear according to the first embodiment, and FIG. 2 is a side view thereof. In the figure, 14
Is a base, L-section steels 14a, 14b, 14c and 14d
Are combined, and the four corners of the joint are fixed by welding or the like to be integrally formed. 2a and 2b are a pair of terminals which are conductively connected to a main circuit (not shown).
And is supported insulated from the base 14. Reference numeral 4 denotes a blade, one end of which is rotatably supported and electrically connected to the terminal 2a, and the other end of which is the other terminal 2a.
b. The above terminals 2a, 2b
The opening and closing unit 5 is configured by the blade 4 and the opening and closing unit 5. The opening / closing unit 5 is used in a set or a plurality of sets are juxtaposed at a predetermined insulating interval. In FIG. 1, the opening / closing unit 5 is 3
An example in which sets are juxtaposed is shown.

Reference numeral 6 denotes a handle, 7 denotes a shaft rotated by the handle 6, 8 denotes a lever provided corresponding to the opening / closing unit 5 and one end of which is fixed to the shaft 7, and 9 denotes one end of which is turned to the other end of the lever 8. An insulating link movably connected and the other end rotatably connected to each of the blades 4. Fifteen
Is an insulating barrier, which is disposed between the opening and closing units 5 and on both outer sides in the direction in which the opening and closing units 5 are arranged, and is attached to the base 14. When the opening / closing unit 15 is one set, the insulating barriers 15 are arranged only on both outer sides.

The opening / closing operation of the opening / closing device is performed by the handle 6. When the handle 6 is turned, the blade 4 is turned around the connection portion with the terminal 2a via the shaft 7, the lever 8, and the insulating link 9 to come into contact with and separate from the tip of the terminal 2b, thereby forming a main circuit (not shown). Between the terminals 2a and 2b, which are connected to the terminals 2a and 2b.

Next, the mounting structure of the insulating barrier, which is a feature of the present invention, will be described. FIG. 3 is an enlarged cross-sectional view of the mounting portion of the insulating barrier 15 to the base 14 as viewed from the line III-III in FIG. In the figure, reference numeral 16 denotes a mounting member, which is mounted on the insulating barrier 15 by a rivet 17 and is rotatable around the rivet 17. 18 is a screw. FIG. 4 is a perspective view of the mounting member 16,
Reference numeral 16a is a mounting screw hole.

The mounting of the insulating barrier 15 on the base 14 is performed as follows. The mounting member 16 is attached to the insulating barrier 15 in advance with rivets 17, and the mounting member 16 is rotated in the direction of the arrow in a state where the mounting member 16 is combined with a predetermined position on the upper surface side of the base 14, that is, on the opening / closing unit side. The screw hole 16a provided in the mounting member 16 is positioned on the lower surface side of the base 14, and the screw 18 is passed through the mounting hole 14f provided in the base 14 from the upper surface side of the base 14 and tightened into the screw hole 16a.

According to the present embodiment, the insulating barrier can be attached to the base only by tightening the screw from the opening / closing unit side. Therefore, even when the insulating barrier is attached later on site, the attaching operation can be performed easily. Can be.

In addition, only by providing a mounting hole in the base,
Since there is no need to provide screw holes, the manufacture of the base is simplified, the switching device can be manufactured inexpensively when an insulating barrier is not required, and the effect is particularly large when mass production is required.

Embodiment 2 FIG. FIG. 5 is a diagram showing an insulating barrier mounting portion of the switchgear according to the second embodiment, and FIG. 6 is an enlarged cross-sectional view taken along line VI-VI of FIG. 1 and 2 described in the first embodiment, except for the insulating barrier mounting portion, and thus the description of the entire structure and operation will be omitted. FIG.
In FIG. 6, reference numerals 14c and 14d denote L-shaped steels constituting the base 14 similar to those described in the first embodiment, and 15 denotes an insulating barrier. 19 is a mounting member, 19a is an engaging portion, 20 is a screw for mounting, 21 is a nut, 22 is a washer and 23 is a spring, and the mounting member 19 is a screw 2
It is rotatable around 0.

Next, the mounting structure of the insulating barrier 15 will be described. The mounting member 19 is attached to the insulation barrier 15 with the screw 2.
6, a nut 21, a washer 22, and a spring 23 as shown in FIG.
4 is brought into contact with a predetermined position on the upper surface side, that is, on the opening / closing unit side, and the mounting member 19 is rotated to the position indicated by the solid line in the direction of the arrow in FIG. The L-shaped steels 14c and 14d of the base 14 are sandwiched. At this position, the engaging portion 19 a provided on the mounting member 19 is engaged with the bottom end of the insulating barrier 15. At this time, in FIG. 6, since the spring 23 acts in the direction of pressing the washer 22 to the left side, the engagement is maintained while the insulating barrier 15 and the mounting member 19 are tightened.

According to the present embodiment, the insulating barrier can be attached to the base simply by rotating the attaching member provided on the insulating barrier. Can be done very easily.

Further, since there is no need to machine a mounting hole in the base, the opening / closing device can be manufactured at low cost.

Embodiment 3 FIG. 7 is a diagram showing an insulating barrier mounting portion of the switchgear according to the third embodiment. 1 and 2 described in Embodiment 1 except for the insulating barrier mounting portion.
Therefore, description of the entire structure and operation is omitted.
In FIG. 7, reference numerals 14c and 14d denote L-shaped steels constituting the base 14 similar to those described in the first embodiment.
Reference numeral 5 denotes an insulating barrier, and reference numeral 15a denotes a long hole provided in the insulating barrier 15. 24 is a mounting member, 25 is a screw for mounting the mounting member 24 to the insulating barrier 15, and is used in combination with a nut (not shown).

FIG. 8 is a perspective view of the mounting member 24. As shown in FIG.
As shown in the drawing, the mounting member 24 is provided with a cutout portion 24a having a size into which the thick portions of the L-shaped steels 14c and 14d of the base 14 fit.

The mounting of the insulating barrier 15 is performed as follows.
The mounting member 24 is temporarily fixed to the insulating barrier 15 with the screw 25 and is moved toward the center using the elongated hole 15a, and this is combined with the upper surface of the base 14, that is, at a predetermined position on the opening / closing unit side. The member 24 is displaced outward, the cuts 24a are fitted into the L-shaped steels 14c, 14d, and the screws 25
Tighten and fix.

According to the present embodiment, since it is possible to attach the insulating barrier to the base simply by sliding and fixing the attaching member provided on the insulating barrier, even if the insulating barrier is to be attached later on site, for example, the mounting work is not required. Can be done very easily.

Further, since there is no need to machine a mounting hole in the base, the opening / closing device can be manufactured at low cost.

[0030]

As described above, according to the first aspect, the mounting member is rotatably mounted on the insulating barrier, and the mounting member is rotated to position the screw hole on the lower surface side of the base.
Since the insulating barrier can be fixed to the base only by tightening the screw from the upper surface side of the base, when the insulating barrier is to be mounted later, the mounting operation can be performed easily. Further, the base is simply provided with a mounting hole, and there is no need to provide a screw hole.

According to the second aspect of the present invention, the mounting member provided on the insulating barrier is rotatable, and the base is sandwiched between the mounting member and the end of the insulating barrier. Since the end of the barrier was engaged and fixed,
The insulating barrier can be fixed to the base only by rotating the mounting member, and when the insulating barrier is mounted later, the mounting operation can be performed easily. Further, since there is no need to machine a mounting hole in the base, the opening / closing device can be manufactured at low cost.

Further, according to the third aspect of the present invention, the mounting member provided on the insulating barrier is slid, and the cutout of the mounting member is fitted into the base to fix the insulating barrier to the base. When the barrier is mounted later, the mounting operation can be performed easily. Further, since there is no need to machine a mounting hole in the base, the opening / closing device can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is a plan view of a switchgear according to Embodiment 1 of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is an enlarged sectional view of a main part as viewed from III-III in FIG. 1;

FIG. 4 is a perspective view of a mounting member according to the first embodiment.

FIG. 5 is a cross-sectional view illustrating an insulating barrier mounting portion of the switchgear according to the second embodiment.

FIG. 6 is an enlarged sectional view taken along line VI-VI of FIG.

FIG. 7 is a cross-sectional view illustrating an insulating barrier mounting portion of the switchgear according to the third embodiment.

FIG. 8 is a perspective view of a mounting member according to a third embodiment.

FIG. 9 is a plan view showing a conventional switchgear.

FIG. 10 is a side view of FIG. 10;

FIG. 11 is an enlarged sectional view of a main part as viewed from XI-XI in FIG. 9;

[Explanation of symbols]

2a, 2b Terminal 3 Insulator 4 Blade 5 Opening / closing unit 14 Base 14f Mounting hole 15 Insulating barrier 15a Long hole 16 Mounting member 16a Screw hole 17 Rivet 18 Screw 19 Mounting member 19a Engaging portion 20 Screw 23 Spring 24 Mounting member 24a Notch 25 screws

Claims (3)

(57) [Claims] A pair of terminals conductively connected to a main circuit;
An opening / closing unit comprising a blade having one end rotatably supported by one terminal of the pair of terminals and having the other end contacting / separating from the other terminal by the rotation operation, is provided in a set or a plurality with a predetermined insulation interval. An opening / closing device having a pair of juxtaposed and insulatingly supported on an upper surface of a base and arranged between the opening / closing units or on both outer sides of the opening / closing unit and having an insulating barrier attached to the base via an attaching member, wherein In a state where the mounting portion of the barrier is rotatable and the insulating barrier is combined with a predetermined position on the upper surface side of the base, the mounting member is rotated and a screw hole provided in the mounting member is inserted into the lower surface of the base. And fixing the insulating barrier to the base by tightening a screw into the screw hole from the upper surface side of the base through a mounting hole provided in the base. Switching device, characterized in that. 2. A pair of terminals conductively connected to a main circuit;
An opening / closing unit comprising a blade having one end rotatably supported by one terminal of the pair of terminals and having the other end contacting / separating from the other terminal by the rotation operation, is provided in a set or a plurality with a predetermined insulation interval. An opening / closing device having a pair of juxtaposed and insulatingly supported on an upper surface of a base and arranged between the opening / closing units or on both outer sides of the opening / closing unit and having an insulating barrier attached to the base via an attaching member, wherein In a state where the mounting portion of the barrier is rotatable, and the end of the insulating barrier is brought into contact with the upper surface of the base and is assembled at a predetermined position, the mounting member is rotated to mount the mounting member and the insulating barrier. The insulating barrier is sandwiched between the base and the end of the insulating barrier, and the engaging portion provided on the mounting member is engaged with the end of the insulating barrier to hold the insulating barrier. Switching device, characterized in that fixed to. 3. A pair of terminals conductively connected to a main circuit;
An opening / closing unit comprising a blade having one end rotatably supported by one terminal of the pair of terminals and having the other end contacting / separating from the other terminal by the rotation operation, is provided in a set or a plurality with a predetermined insulation interval. A pair of switching devices which are insulated and supported on the upper surface of the base and which are disposed between the switching units or on both outer sides of the switching unit and have an insulating barrier attached to the base via a mounting member, provided on the insulating barrier. With the mounting member slidably mounted in the oblong hole, and in a state where the insulating barrier is combined with a predetermined position on the upper surface side of the base, the mounting member is slid so that the cutout provided in the mounting member is A switchgear, wherein the insulating barrier is fixed to the base by being fixed to the base.