JPH0744872U - One-touch protective cover for disconnector - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a protective cover that is easy to install to prevent contact with a disconnecting switch during charging. [Structure] The movable blade 3 of the disconnector having an open lower end
7. The crown-shaped portion 10 formed so as to cover the supporting insulator 33, and the cylindrical protruding portion 20 formed by protruding from both side surfaces of the crown-shaped portion so as to cover the terminals 32 and 34 by opening the tips. It is made of elastic insulating material,
There is a slit 5 extending from the lower surface of the opening end of the cylindrical protruding portion to the lower end opening of the crown-shaped portion, and a pair of flange portions 2 protruding outwardly is formed at the edge portion thereof. Installation work is simple and reliable, and does not require time or labor.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a one-touch protective cover for a disconnector, which is used to cover a charged part of the disconnector during maintenance work and the like.

[0002]

[Prior art]

 The purpose of installing a disconnector in a power substation or other power transmission / distribution circuit is to connect the power source side (hereinafter referred to as the primary side) and the load side (hereinafter referred to as the secondary side) of the disconnector to the movable block of the disconnector. Opening the raid is to ensure the separation. Therefore, it is dangerous to contact the primary side of the open disconnector. When performing various work related to electric circuits in the vicinity of this disconnector, it is necessary to always take insulation measures against this disconnector during charging for safety. In addition, depending on the circuit configuration, there may be cases where closed circuit breakers are adjacent to each other. In this case, it is necessary to take insulation measures for the whole disconnecting switch.

In implementing such insulation measures, the disconnecting switch is often installed at a high place from the viewpoint of safety, and thus ease of insulation work is also a key point to be considered. In the conventional insulation measures, measures were taken to prevent workers and tools from contacting the charging part by wrapping a rubber sheet around the charging part and stopping with a clip.

[0004]

[Problems to be solved by the device]

 As described above, in the method of covering the disconnector with the rubber sheet, since the covered portion has a complicated shape including the primary terminal, the secondary terminal and the blade on the supporting insulator, the insulation work takes time and labor. Moreover, there was a problem in terms of safety that the rubber sheet could fall off. A first object of the present invention is to provide a one-touch protective cover for a disconnector that can quickly, easily and surely cover a charging part having a lead-out terminal.

A second object of the present invention is to provide a one-touch protective cover for a disconnector, which can quickly, easily and surely cover a charging part having no lead terminal.

[0006]

[Means for Solving the Problems]

 In order to achieve the first object, a component of a disconnector including an insulator for supporting a lead-out terminal is formed with a cross section and a depth capable of being covered and an open bottom end. A crown-shaped portion made of an elastic insulating material having an internal protrusion that engages with the reduced diameter portion of the rim body, and a projection formed by opening the tip from at least one side surface of the crown-shaped portion so as to cover the lead-out terminal. A cylindrical protruding portion made of an elastic insulating material, the center of the lower surface of the cylindrical surface of the cylindrical protruding portion, and the surface of the coronal portion connected to this, from the opening end of the cylindrical protruding portion to the above coronal portion. A slit provided across the lower end opening, and a pair of collar portions formed to project outward from the crown-shaped portion and the cylindrical protruding portion at the edge portion of the slit with the slit interposed therebetween, Align the slit at the lower end of the coronal portion and the pair of collars with each other toward the lower end. Than it was disconnector-touch protection cover made by forming spread reversed wedge Te.

The constituent parts may be a movable blade of the disconnector, an insulator supporting the movable blade, a receiving blade, an insulator supporting the receiving blade, and two lead terminals. It may be one lead terminal and an insulator that supports the lead terminal.

In order to achieve the second object, a movable blade of a disconnector and an insulator supporting the movable blade are formed with a cross-section and a depth capable of being covered and a lower end is opened. And a tubular portion made of an elastic insulating material having an internal protrusion that engages with the reduced diameter portion of the insulator, and the lower end opening of the tubular portion extends to a position where the insulator can be crowned. The one-touch protective cover for a disconnector has a slit provided as a slit and a pair of flanges formed on the edge of the slit so as to project outward from the tubular portion with the slit interposed therebetween. .

[0009]

With such a configuration, according to the present invention, the above object can be achieved by the following operation. For the first purpose, the coronal portion of the disconnector one-touch protective cover is covered with the movable blade or the lead-out terminal and the slit is widened by the collar portion opened in an inverted wedge shape so that the coronal portion is movable. And its supporting insulator, and push it in so that the cylindrical protrusion covers the lead-out terminal. The installation work is completed when the lower end opening of the coronal part covers the base of the support insulator and the cylindrical protrusion covers the lead terminals. At this time, in the elastic disconnector one-touch protective cover, the inner surface of the coronal portion is brought into close contact with the outer peripheral surface of the support insulator, and the slit is closed to hold the disconnector one-touch protective cover itself in that state. The internal projections of the coronal portion engage with the reduced diameter portion of the insulator to improve the close contact and prevent the falling off after mounting.

When the tubular projecting portion is inserted and attached to the pull-out terminal, the slit is closed by the elastic force of the disconnector one-touch protective cover itself.

For the second purpose, the one-touch protective cover has a cylindrical head portion, and the collar portion opened in an inverted wedge shape is pressed against the movable blade to cover it. The lower end opening of the tubular part covers the base of the support insulator and the installation work is completed.

At this time, in the elastic cover, the inner surface of the tubular portion is brought into close contact with the outer peripheral surface of the support insulator, and the internal projection of the tubular portion is engaged with the reduced diameter portion of the insulator to make close contact. To improve the adhesion. The one-touch protective cover itself is held in that state by closing the slit. Therefore, it is not necessary to fix the one-touch protective cover using a special means.

In this way, it is not necessary to fix the disconnector one-touch protective cover using special means.

Here, the pair of collars formed on the edge portions of the slits serve to prevent the risk of an operator or tools used by the operator contacting the charging portion through the slits.

[0015]

【Example】

 A first embodiment of the present invention will be described with reference to FIGS. 1 is a longitudinal sectional view of the embodiment, FIG. 2 is an external view seen from IIA of FIG. 1, and FIG. 3 is an overall view showing a state in which the present embodiment is attached to a disconnector. The disconnector one-touch protective cover 50 of the embodiment is shown in cross section so that the inside can be seen. As shown in FIG. 3, the disconnector includes a blade 31, a primary terminal 32, a secondary terminal 34, a movable blade 37, and an insulator 33 that supports them. This insulator 33 is bolted to the disconnector base 36 to form a disconnector. The disconnector is attached to a required place by the disconnector base 36, and the movable blade 37 is opened and closed on the receiving blade 31 to separate or connect the primary side and the secondary side. Therefore, when the movable blade 37 is closed, it is considered that the entire disconnecting switch is charged.

As shown in FIGS. 1 to 3, the one-touch protection cover 50 supports the receiving blade 31 and the crown-shaped portion 10 that can house the receiving blade 31 and the base of the insulator 33 that supports the receiving blade 31. The primary terminal 32 formed at a right angle to the insulator 33, the holding portion for movably holding the movable blade 37, and the secondary terminal 34 formed at a right angle to the insulator 33 supporting the holding portion are covered. It is formed by a cylindrical protrusion 20 protruding from the side surface of the crown portion 10.

Further, the slit 5 is provided from the lower surface of the opening end of the cylindrical protruding portion 20 to the lower end opening of the crown-shaped portion 10. Further, a pair of flanges 2 is formed on the edge of the slit with the slit 5 sandwiched therebetween so as to project outward from the crown-shaped portion 10 and the cylindrical protruding portion 20. Synthetic rubber is preferable as the constituent material because it requires elasticity and insulating performance. However, the material may be natural rubber or elastic resin.

When attached, the coronal portion 10 needs to be held in close contact with the outer peripheral surface of the support insulator 33 due to its elasticity, and in a posture with the lower end opening facing up as in the example of FIG. Since it is often mounted, it is preferable to make the inner dimension of the coronal portion 10 slightly smaller than the outer diameter dimension of the support insulator 33 in consideration of the fact that they are closely attached even if they are mounted from the bottom up. Further, the internal protrusion 3 of the crown portion 10 engages with the reduced diameter portion of the support insulator 33 to improve the degree of adhesion.

The length of the coronal portion 10 can accommodate from the base of the support insulator 33 to the top of the movable blade 37, and there is a slight margin between the top of the movable blade 37 and the inner surface of the lid of the coronal portion 10. It is good to say On the other hand, the cylindrical projecting portion 20 covering the primary terminal 32 and the secondary terminal 34 has the inner diameter and length of the base portion and the opening portion determined so that each terminal, the circuit terminal connected to it, and the mounting bolt can be housed. To be

In order to reinforce the joint between the coronal portion 10 and the cylindrical protruding portion 20 and prevent the deformation of the entire shape, a rib 8 having a hole 9 is attached to the joint between the oval portion 10 and the cylindrical protruding portion 20. is there. Further, the rib 8 serves as a handle when the one-touch protection cover 50 is removed from the disconnector.

To attach this, hold the head of the coronal portion 10 of the one-touch protection cover 50, apply the collar portion 2 that opens in an inverted wedge shape to the top of the movable blade 37, and open the slit 5 to expand the coronal portion. 10 pushes the movable blade 37 from the movable blade 37 to the receiving blade 31, the supporting insulator 33, and the cylindrical protruding portion 20 while pushing them so as to cover both terminals 32 and 34. When the lower end opening of the crown-shaped portion 10 covers the base portion of the support insulator 33 and the tubular protruding portion 20 also covers both terminals 32 and 34, the mounting operation is completed.

At this time, in the elastic cover 50, the inner surface of the coronal portion 10 is brought into close contact with the outer peripheral surface of the supporting insulator 33, and the internal protrusion 3 of the coronal portion 10 bites into the fold of the supporting insulator 33. Improves the degree of adhesion. The slit 5 is closed and the one-touch protective cover 50 itself is held in that state. On the other hand, when the tubular protrusion 20 is inserted into both terminals 32 and 34, the slit 5 is closed by the elasticity of the insulating cover 50 itself. Therefore, it is not necessary to fix the one-touch protective cover 50 using a special means. Here, the pair of collars 2 formed at the edges of the slit 5 helps prevent the risk of an operator or tools used by the operator coming into contact with the charging portion through the slit 5.

At this time, since the electric wires in the vicinity are charged, it is common to use an insulating cable or insulate the electric wires at least in the vicinity of the disconnector. For the insulation of this electric wire, a bellows-shaped and flexible insulating cylinder provided with slits for easy attachment / detachment is often used. The pleats 4 provided on the inner surface of the open end of the cylindrical protruding portion 20 are fitted with the one-touch protection cover 50 and the bellows-shaped flexible protection tube 35 (also called an edge cover) for insulating the electric wire. Is easy and reliable.

A second embodiment of the present invention will be described with reference to FIGS. 4 to 6. 4 is a longitudinal sectional view of the embodiment, FIG. 5 is an external view seen from IIB in FIG. 4, and FIG. 6 is an overall view showing a state in which the present embodiment is attached to a disconnector. The disconnector one-touch protective cover 50 of the embodiment is shown in cross section so that the inside can be seen. The disconnector of the present embodiment has a conductor penetrating insulator 38 attached to the opposite side through an insulator 33 that supports the movable blade 37 and a disconnector base 36 so that a conductor that conducts to the movable blade 37 is provided. The conductor 33 is provided so as to penetrate through the central portions of the insulator 33 and the conductor through-insulator 38, and the terminal is provided on the top of the conductor through-insulator 38.

As shown in FIGS. 4 to 6, the one-touch protection cover 50 includes a tubular portion 10 capable of accommodating the terminal of the disconnector and the base of the conductor through insulator 38, and a side surface of the tubular portion 10. It is formed of a cylindrical protruding portion 20 protruding so as to cover the terminal.

Further, the slit 5 is provided from the lower surface of the opening end of the cylindrical protruding portion 20 to the lower end opening of the cylindrical portion 10. Further, a pair of flanges 2 is formed on the edge of the slit across the slit 5 so as to project outward from the tubular portion 10 and the tubular protruding portion 20. Synthetic rubber is preferable as the constituent material because it requires elasticity and insulating performance. However, the material may be natural rubber or elastic resin.

When the tubular portion 10 is attached, the elasticity of the tubular portion 10 needs to be tightly held on the outer peripheral surface of the conductor through-insulator 38. Even if the tubular portion 10 is attached from the bottom to the top, the tubular portion 10 is closely attached. Considering this, it is preferable that the inner dimension of the tubular portion 10 is slightly smaller than the outer diameter dimension of the conductor through-insulator 38. Further, the inner protrusion 3 of the tubular portion 10 engages with the reduced diameter portion of the conductor penetrating insulator 38 to improve the degree of adhesion.

The length of the tubular portion 10 is such that it can accommodate the conductor through-insulator 38 from the base portion to the top portion, and there is some margin between the top portion and the inner surface of the lid portion of the tubular portion 10. Good. On the other hand, the cylindrical protruding portion 20 covering the terminal has the inner diameter and length of the base portion and the opening portion so that the terminal, the circuit terminal connected to the terminal and the mounting bolt can be housed. To reinforce the joint between the tubular portion 10 and the tubular protruding portion 20 and prevent deformation of the overall shape, a rib 8 having a hole 9 is attached to the joint portion between the tubular portion 10 and the tubular protruding portion 20. Further, the rib 8 serves as a handle when the one-touch protection cover 50 is removed from the disconnector.

To attach this, hold the cylindrical portion 10 of the one-touch protective cover 50, and cover the flange portion 6 that is opened in the shape of an inverted wedge against the terminal of the conductor through-insulator 38 while pressing it. When the lower end opening of the tubular portion 10 has finished covering the base of the conductor through-insulator 38 and the tubular protruding portion 20 has also finished covering the terminals, the mounting operation is completed.

At this time, in the elastic cover 50, the inner surface of the tubular portion 10 is brought into close contact with the outer peripheral surface of the conductor through-insulator 38, and the internal projection 3 of the tubular portion 10 is covered by the conductor through-insulator 38. It digs into the folds to improve adhesion. The slit 5 is closed to hold the one-touch protective cover 50 itself in that state. On the other hand, when the tubular protrusion 20 is inserted and attached to the terminal, the slit 5 is closed by the elasticity of the insulating cover 50 itself. Therefore, it is not necessary to fix the one-touch protective cover 50 using a special means. Here, the pair of collars 2 formed at the edges of the slit 5 helps prevent the risk of an operator or tools used by the operator coming into contact with the charging portion through the slit 5.

The pleats 4 may be provided on the inner surface of the open end of the cylindrical protrusion 20.

A third embodiment of the present invention will be described with reference to FIGS. 7 to 9. 7 is a longitudinal sectional view of the embodiment, FIG. 8 is an external view as seen from IIC of FIG. 7, and FIG. 9 is an overall view showing a state in which the present embodiment is attached to a disconnector. The disconnector one-touch protective cover 50 of the embodiment is shown in cross section so that the inside can be seen. In this embodiment, the movable blade 37 that is open and the insulator 33 that supports the movable blade 37 are covered.

As shown in FIGS. 7 to 9, the one-touch protection cover 50 includes a tubular portion 10 and a tubular portion capable of accommodating the open movable blade 37 and the base portion of the insulator 33 supporting the movable blade 37. A slit 5 is provided from the lower end opening of the to the position where the insulator 33 is completely covered, and a pair of flanges 2 projecting outward from the tubular portion 10 are formed at the edge of the slit across the slit 5. ing. Synthetic rubber is preferable as the constituent material because it requires elasticity and insulating performance. However, the material may be natural rubber or elastic resin.

When the tubular portion 10 is attached, the elasticity of the tubular portion 10 needs to be held in close contact with the outer peripheral surface of the support insulator 33. Considering that the tubular portion 10 is in close contact even when it is attached from below. The inner dimension of the tubular portion 10 is preferably slightly smaller than the outer diameter dimension of the support insulator 33. Furthermore, the internal protrusion 3 of the tubular portion 10 engages with the reduced diameter portion of the support insulator 33 to improve the degree of adhesion.

The length of the cylindrical portion 10 is such that the movable blade 37 that is open and the top portion to the base portion of the insulator 33 that supports the movable blade 37 can be housed, and the top portion of the movable blade 37 and the lid of the cylindrical portion 10 can be accommodated. It is good to have some clearance between the inner surfaces of the parts. To attach it, hold the head of the tubular portion 10 of the one-touch protection cover 50 and cover the movable blade 37 by pressing the collar portion 6 that opens in the shape of an inverted wedge. The lower end opening of the tubular portion 10 covers the base portion of the support insulator 33 and the mounting operation is completed.

At this time, in the elastic cover 50, the inner surface of the tubular portion 10 is brought into close contact with the outer peripheral surface of the support insulator 33, and the internal protrusion 3 of the tubular portion 10 is compressed by the support insulator 33. Engages with the diameter part to improve the adhesion. The slit 5 is closed to hold the one-touch protective cover 50 itself in that state. Therefore, it is not necessary to fix the one-touch protective cover 50 using a special means. Here, the pair of collars 2 formed at the edges of the slit 5 helps prevent the risk of an operator or tools used by the operator coming into contact with the charging portion through the slits 5 as compared with the other embodiments. It is the same.

Further, since the four cutout grooves 3 are provided in the edge portion of the lower end opening of the tubular portion 10, the one-touch protection cover 50 is securely inserted without hitting the bolt of the disconnector base 36. As described above, the use of the one-touch protective cover 50 of the present invention has the effect that the work of insulating the live part of the disconnector is simple and reliable, and the time and effort required for the insulation measure can be reduced.

[0038]

[Effect of device]

 As described above, according to the present invention, the work of insulating the live part of the disconnector can be performed easily and surely by installing the one-touch protective cover. It has a better effect in places with poor workability such as high places.

As a result, the operation of the original electric circuit can be performed safely and quickly.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of the present invention.

FIG. 2 is a view seen from a line IIA-IIA in FIG.

FIG. 3 shows a state in which the embodiment of FIG. 1 is attached to a disconnector.

FIG. 4 is a vertical sectional view of a second embodiment of the present invention.

5 is a diagram viewed from a line IIB-IIB in FIG. 4.

6 shows a state in which the embodiment of FIG. 4 is attached to a disconnector.

FIG. 7 is a vertical sectional view of a third embodiment of the present invention.

FIG. 8 is a view seen from the line IIC-IIC in FIG. 7.

9 shows a state in which the embodiment of FIG. 7 is attached to a disconnector.

[Explanation of symbols]

 2 Collar part 3 Internal protruding part 4 Fold 5 Slit 6 Reverse wedge-shaped part 8 Rib 9 Hole 10 Coronal part 20 Cylindrical protruding part 21 Notched groove 31 Receiving blade 32 Primary terminal 33 Insulator 34 Secondary terminal 35 Bellows flexible protective tube 36 Disconnector base 37 Movable blade 38 Conductor penetration insulator 50 One-touch protective cover

Claims (4)

[Scope of utility model registration request] Claim: What is claimed is: 1. A component of a disconnecting switch, which comprises an insulator for supporting a lead-out terminal, has a cross section and a depth capable of being covered and is formed with an open lower end, and is connected to a reduced diameter portion of the insulator. A coronal portion made of an elastic insulating material having an internal protrusion to be fitted,
A tubular projecting portion formed of a resilient insulating material that is formed by projecting a tip so as to cover the lead-out terminal from at least one side surface of the crown-shaped portion, and a center of a lower surface of the tubular surface of the tubular projecting portion. A slit provided on the surface of the coronal portion connected to this from the opening end of the tubular protruding portion to the lower end opening of the coronal portion, and the coronal portion and the tubular portion at the edge of the slit across the slit. A pair of flanges formed to project outward from the projecting portion, and the slit and the pair of flanges of the portion located at the lower end of the coronal portion are spread in a reverse wedge shape toward the lower end. One-touch protective cover for disconnector formed. 2. The component according to claim 1, wherein the component is a movable blade of the disconnector, an insulator for supporting the movable blade, a blade, an insulator for supporting the blade, and two lead terminals. One-touch protective cover for disconnecting switch. 3. The one-touch protective cover for a disconnector according to claim 1, wherein the component is one lead-out terminal of the disconnector and an insulator supporting the lead-out terminal. 4. The movable blade of the disconnector and the insulator supporting the movable blade are formed with a cross-section and depth capable of being crowned and have a lower end opened, and engage with a reduced diameter portion of the insulator. A tubular portion made of an elastic insulating material having an internal protrusion,
A slit provided from the lower end opening of the tubular portion to a position where the insulator can be covered, and a pair formed so as to project outward from the tubular portion at the edge of the slit across the slit. One-touch protective cover for disconnecting switch, which has a collar part.