JPH0643998Y2 - General-purpose cutout operation rod unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a general-purpose cutout operating rod unit.

[Prior Art] Conventionally, an operating rod dedicated to a tubular cutout has been used to replace a blowout fuse having a tubular cutout. At the tip of this operation rod, a fitting cylinder portion that can be engaged with the base end portion of the discharge type fuse is provided, and the discharge type fuse is replaced by this fitting relationship. Further, in a cylindrical cutout equipped with a current limiting fuse, an operating rod dedicated to the current limiting fuse is also used.

Also, when replacing the fuse tube of the box-shaped cutout, the operation rod dedicated to the box-shaped cutout is used. A hook for opening and closing the box-shaped cut-out lid is formed at the tip of this operation rod, and a contact blade insertion hole for inserting the contact blade of the fuse cylinder is formed. Then, the box-shaped cutout lid is opened and closed by the hook of the operation rod, and the contact blade of the fuse cylinder is inserted into the contact blade insertion hole to replace the fuse cylinder.

[Problems to be solved by the invention] However, as described above, since the operation rods for operating the tubular cutout and the box-shaped cutout have to be individually dedicated, the fuse tubes of various cutouts have to be replaced. When doing so, there was the inconvenience of having to carry a dedicated operating rod together.

It is an object of the present invention to provide a general-purpose cutout operation rod unit that can handle a plurality of types of fuses or fuse cylinders by using an existing operation rod.

[Means for Solving the Problem] In order to achieve the above-mentioned object, the invention of claim 1 provides a base end of a cylindrical cutout discharge fuse at a tip of a rod body provided with a grip portion on the base end side. An operating rod having a fitting tubular portion that can be inserted and locked and a fitting tubular portion of the operating rod are formed so as to be externally fitted, and a base end of a current limiting fuse can be internally fitted and supported at a tip portion thereof. The gist is a general-purpose cutout operation rod unit including an adapter having a fitting guide tube portion.

According to the invention of claim 2, the operating rod is provided with a fitting tubular portion into which the proximal end of the discharge fuse for tubular cutout can be inserted and locked at the tip of the rod body having the grip portion on the proximal end side. And a hook portion for opening and closing the lid of the box-shaped cutout and a contact blade of the fuse barrel are inserted into the fitting barrel of the operating rod so as to be able to be fitted and locked therein. The general purpose is a general-purpose cutout operation rod unit including an operation member having an insertion hole for.

Further, according to the invention of claim 3, the operating rod is provided with a fitting tubular portion into which the proximal end of the discharge fuse for tubular cutout can be inserted and locked at the tip of the rod body provided with the grip portion on the proximal end side. An adapter provided with a fitting guide cylinder part capable of being externally fitted to the fitting cylinder part of the operation rod, and having a fitting guide cylinder part capable of internally fitting and supporting the base end of the current limiting fuse at the tip end thereof; It is formed so that it can be internally fitted and locked to the fitting cylinder part of, and at its tip part there is a hook part for opening and closing the lid of the box-shaped cutout and an insertion hole for inserting the contact blade of the fuse cylinder. The gist is a general-purpose cutout operation rod unit including an operation member provided.

[Action]

That is, when replacing the discharge fuse of the tubular cutout, in each of the inventions of claims 1, 2 and 3, hold the grip portion at the proximal end side of the operating rod and discharge it to the fitting tubular portion at the tip of the operating rod. Replace the fuse by inserting and locking the base end of the fuse.

When replacing the current limiting fuse, in the inventions of claims 1 and 3, the adapter is externally fitted to the fitting cylindrical portion of the operation rod. Then, the base end of the current limiting fuse is fitted into the fitting guide cylinder of the adapter, and the outer circumference of the base end of the fuse is supported by the fitting guide cylinder to replace the fuse.

Further, when the box-shaped cutout fuse cylinder is replaced, in the inventions of claims 2 and 3, the operation member is fitted and locked in the fitting cylinder portion of the operation rod. Then, the box-shaped cut-out lid is opened / closed by the hook portion of the operation member, and the contact blade of the fuse cylinder is inserted into the insertion hole to replace the fuse cylinder.

Embodiment An embodiment embodying the present invention will be described below with reference to the drawings.

First, the operating rod for replacing the fuse of the cylindrical cutout 20
The rod body 1 will be described as shown in FIGS.
A fitting tube portion 3 is fixed to the tip of the pin by a pin 2. At the base end of the fitting tubular portion 3, a collar 4 as a locking portion having a diameter larger than the outer diameter of the tip is provided in a protruding manner. In addition, the engagement hole 5 extends from the tip end side of the fitting tubular portion 3 toward the base end side.
Further, an engaging recess 5a communicating with the engaging hole 5 is provided at the base end of the fitting tubular portion 3.

A locking hole 6 communicating with the engaging recess 5a is formed on the proximal end side of the fitting cylinder 3 in the radial direction of the fitting cylinder 3, and
A female screw 7 is threaded into the locking hole 6 (upper in the figure). Further, a gas vent hole 8 is formed at a position orthogonal to the locking hole 6 on the side surface of the base end portion of the fitting tubular portion 3 so as to communicate with the engagement recess 5a.

Further, a step portion 9 is formed on the outer periphery of the tip of the fitting cylinder portion 3, and a ring member 10 having the same outer diameter as that of the fitting cylinder portion 3 is capped on the step portion 9. Project from the tip of the stepped portion 9. The fitting hole 11 is composed of a large diameter portion 11a formed from the inner peripheral surface of the ring member 10 and a small diameter portion 11b formed from the inner peripheral surface of the fitting tubular portion 3.

On the inner peripheral surface of the tip of the ring member 10, a pair of engaging protrusions 12 (only one of which is shown in FIG. 3) formed to project in an L-shape are provided at positions facing each other. An annular pressing member 13 is provided in the large-diameter portion 11a of the fitting hole 11, and one end thereof is urged toward the tip end by a coil spring 14 locked to the tip of the fitting cylinder portion 3. . And the pressing member
13 is always in contact with the engaging projection 12 by the biasing force of the coil spring 14.

An outer cylinder member 15 that covers the outer peripheral surfaces of the ring member 10 and the fitting cylindrical portion 3 is screwed to the outer peripheral surfaces of the tip end side. As a result, the reduced diameter portion 16 is formed on the base end side of the fitting tubular portion 3, and the locking step portion 17 is formed between the reduced diameter portion 16 and the outer tubular member 15.

In addition, in order to secure a creepage distance, drainage insulating caps 18 and 19 made of a cap-shaped EP rubber or the like are attached to the rod body 1 at approximately three-divided positions. A tube 18a made of fluororesin is arranged at the lower part of 18 (right side in FIG. 1) in order to suppress the leakage current during rainy work. Further, the rod body 1 has a grip portion on the base end side to which the drain insulating caps 18 and 19 are attached.

Next, an adapter attached to the fitting tube portion 3 of the operation rod 20.
21 will be described.

As shown in FIGS. 7 and 8, the entire adapter 21 is formed into a cylindrical shape so that the adapter 21 can be fitted onto the fitting cylindrical portion 3. A locking projection 22 is provided on the inner circumference of the base end of the adapter 21. The locking projection 22 fits the adapter 21 onto the fitting cylinder 3, and when the base end 23 as the locked part of the adapter 21 comes into contact with the collar 4, It is adapted to engage with the locking step portion 17. As a result, the adapter 21 is prevented from coming off from the fitting tubular portion 3 and is supported in a stable state so as not to move up and down.

Further, the base end portion 23 of the adapter 21 is provided with a plurality of slits 24 (in this embodiment, 4) along the longitudinal direction of the adapter 21.
A plurality of cutouts 25 having elasticity are formed on the base end side of the adapter 21 by the slits 24. Therefore, the proximal end side of the fitting tubular portion 3 can be crimped by the cut piece 25.

Further, a guide portion 26 as a fitting guide cylinder portion that supports the outer periphery of the main body of the tubular cut-out current limiting fuse F1 is extendedly formed at the tip portion of the adapter 21.

Next, the operation member 27 which can be fitted in the engagement hole 5 will be described.

As shown in FIGS. 4 to 6, the extension of the connecting rod 27 of the operating member 27 is formed so that the connecting rod 27 can be fitted in the engaging hole 5 of the fitting tubular portion 3, and the connecting rod 27a has a box-shaped end portion. An operation unit 31 for operating the cutout is fixed by a pin 32. A hook portion 33 for opening and closing the lid of the box-shaped cutout and a body portion 34 are formed at the tip of the operation portion 31. The hook portion 33 is formed so as to extend orthogonally to the connecting rod 27a.

In addition, a rectangular mounting hole 36 is radially provided in the body portion 34, and a rubber cushioning member 37 having an insertion hole 35 into which a contact blade of a fuse cylinder is inserted is formed in the mounting hole 36. It has been inserted. The cushioning member is formed by the pair of upper and lower screws 38.
37 is attached to the body 34.

Further, at the base end portion of the connecting rod 27a, a columnar engagement protrusion 28 which can be engaged with an engagement recess 5a continuously provided in the engagement hole 5 is formed.
Are formed to project. An insertion hole 30 as an engagement hole through which a pin member 29 as a locking member can be inserted into the engagement protrusion 28.
Are transparently provided in a direction orthogonal to the engaging projection 28.

A male screw 29a is threaded on the tip of the pin member 29 so as to be screwed into the female screw 7 of the locking hole 6. Further, a mounting ring 39 is rotatably fitted in the head portion 29b of the pin member 29, and one end of a string 40 is tied to the mounting ring 39. The other end of the string 40 is connected to the other end of the string 40 so that the string 40 does not come out from the through hole 43 that is inserted through the connecting rod 27a. Therefore, the pin member 29
Is not easily lost with respect to the operating member 27.

The use of the operating rod 20, the adapter 21, and the operating member 27 will be described.

First, a case will be described in which the discharge type fuse F2 mounted in the tubular cutout is replaced using only the operating rod 20 shown in FIG. The base end of the discharge type fuse F2 mounted in the tubular cutout is fitted with the fitting hole 11 of the fitting tubular portion 3 of the operation rod 20.
Coil spring with a pair of protrusions 41 projecting in opposite directions 180 degrees on the outer periphery of the base end of the same discharge type fuse F2.
The pressing member 13 is retracted against the biasing force of 14. And
By rotating the rod body 1 of the operation rod 20, the protrusion 41 of the discharge type fuse F2 is positioned between the engagement protrusion 12 and the pressing member 13, and they are engaged with each other so that they cannot be pulled out.

Then, by pulling the operating rod 20, the discharge type fuse F2 can be pulled out. Further, in order to insert a new fuse F2, contrary to the above, the ejection type fuse F2 is previously inserted into the fitting hole 11 of the fitting tubular portion 3, and the projection 41 of the ejection type fuse F2 is engaged in the same manner as described above. It suffices that the abutting portion 12 and the pressing member 13 are engaged with each other in a non-pullable manner, and in this state, the discharge type fuse F2 is mounted in the cylindrical cutout by the operating rod 20.

Next, when the current limiting fuse F1 is installed in the tubular cutout, the outer tube member 15 of FIG.
To fit. That is, the notch 25 of the adapter 21 is slightly opened outward so that the locking projection 22 provided on the inner peripheral surface of the adapter 21 does not lock to the tip of the outer tubular member 15, and the locking projection 22
Is brought into contact with the outer circumference of the outer tubular member 15, and the adapter 21 is slid toward the reduced diameter portion 16.

Then, due to the elasticity of the cut piece 25 itself, as shown in FIG. 8, the locking projection 22 engages with the locking step portion 17 of the fitting tubular portion 3, and the base end portion 23 of the adapter 21 fits. Collar 4 of joint 3
Abut. Therefore, the adapter 21 does not easily come off from the fitting tubular portion 3, and the adapter 21 can be stably attached to the fitting tubular portion 3 without vertical movement or wobbling.

In this state, the base end of the current limiting fuse F1 in the tubular cutout is inserted into the engagement hole 5 of the operation rod 20 to which the adapter 21 is attached. At this time, the guide portion 26 formed at the tip of the adapter 21 guides and supports the outer periphery of the main body of the current limiting fuse F1.
Hereinafter, similarly to the mounting of the discharge type fuse F2 to the fitting cylinder portion 3, a pair of protrusions 42 on the outer periphery of the base end of the current limiting fuse F1 are engaged between the engagement protrusion 12 and the pressing member 13 in a non-pullable manner. To do.

Therefore, since the current limiting fuse F1 can be supported in a stable state by this adapter 21, when the adapter 21 is attached to the fitting tubular portion 3 of the operating rod 20, a tubular cutout with the current limiting fuse F1 attached is obtained. Can also be used.
At the end of replacement, the cut-out pieces 25 of the adapter 21 can be easily removed from the outer cylinder member 15 of the operating rod 20 by expanding the cut-out pieces 25.

Next, when the box-shaped cutout fuse cylinder is replaced, the operating member 27 can be removed from the operating rod 20. That is, the connecting rod 27a is inserted into the fitting hole 11 of the fitting tubular portion 3 shown in FIG. 1 to position the engaging protrusion 28 in the engaging recess 5a. And
The through hole 30 of the engaging projection 28 is fitted into the engaging hole 6 of the fitting tubular portion 3.
To match.

In this state, the male screw 29a of the pin member 29 is replaced with the female screw 7
Is inserted from the one locking hole 6 in which is not carved. Then, the other female screw 7 is inserted through the insertion hole 30 of the engaging protrusion 28.
The pin member 29 is screwed into the locking hole 6 in which the male screw 29a is inserted.

Therefore, as shown in FIG. 6, the operating member 27 is fixed to the fitting tubular portion 3 by the pin member 29. To replace the box-shaped cutout fuse tube in this state, the box-shaped cutout lid is opened and closed by the hook portion 33 of the operating member 27. Then, the fuse cylinder mounted on the lid of the box-shaped cutout is exposed, and the contact blade of the fuse cylinder is operated as an operating member.
The fuse cylinder can be removed by inserting it into the insertion hole 35 provided through the operation portion 31 of 27.

To attach the fuse cylinder to the lid of the box-shaped cutout, the reverse operation to the above is performed. That is, the fuse blade contact blade is inserted into the insertion hole 35 of the operation portion 31 and mounted on the lid of the box-shaped cutout. Then, the lid is closed by the hook portion 33 of the operation portion 31.

Therefore, if the operating member 27 is fitted into the fitting tubular portion 3 of the operating rod 20 and fixed by the pin member 29, the box cutout can be opened / closed and the fuse barrel can be replaced. At the end of replacement, the operation member 27 can be easily removed from the fitting hole 11 of the operation rod 20 by removing the pin member 29 from the locking hole 6.

As described above, the ejecting fuse F2 having a tubular cutout can be replaced by the fitting tubular portion 3 of the operation rod 20, and the tubular cutout can be obtained by externally fitting the fitting fuse 3 of the adapter 21. The current limiting fuse F1 mounted inside can be replaced. Further, by inserting the operating member 27 into the fitting hole 11 of the fitting tubular portion 3, it is possible to open and close the lid of the box-shaped cutout and replace the fuse barrel.

Therefore, unlike the prior art, by using the adapter 21 and the operating member 27 for the operating rod 20, it is possible to replace the tubular cutout discharge type fuse F2, the current limiting fuse F1 and the box cutout fuse tube. it can. As a result, it is not necessary to prepare a dedicated operating rod for operating each cutout, and the operator is very convenient to carry. Moreover, neither the adapter 21 nor the operating member 27 is attached to the proximal end portion of the operating rod 20 but is externally or internally fitted to the fitting tubular portion 3 at the distal end of the operating rod 20. Therefore, there is no need to newly form a grip portion on the tip end side of the rod body 1, and the existing operation rod 20 whose base end side is the grip portion can be used as an operation rod for constituting the unit. Also, when using the operating rod 20 on a pole, the grip is only on the base end side, so there is a risk of catching on the distribution line, etc. due to the gripping operation between the distal end side and the base end side of the operating rod 20. There is an advantage that it can be prevented.

The present invention is not limited to the above-mentioned embodiment, and may be freely modified within the scope of the invention.

[Effects of the Invention] As described in detail above, according to the present invention, it is possible to deal with replacement work of a plurality of types of fuses or fuse cylinders, and
For the operating rod that constitutes the unit, one existing operating rod whose proximal end side is the grip portion can be used without forming a new grip portion, and when using the operating rod Since the part is only on the base end side, it is possible to prevent the accidental catching of the operation rod with the distribution line or the like on the pillar by grasping the tip end side and the base end side of the operation rod.

[Brief description of drawings]

1 is a side view of the operating rod, FIG. 2 is a plan view of the fitting cylinder portion,
3 is a partially cutaway enlarged side view of the fitting tubular portion, FIG. 4 is a perspective view showing an operating member and a pin member, and FIG. 5 is a partially enlarged side view showing an operating portion of the operating member. FIG. 7 is an explanatory view showing a state in which the operating member is fitted in the fitting hole of the fitting tubular portion and fixed by the pin member. FIG. 7 is a partially cutaway enlarged perspective view showing the shape of the adapter. The figure is an explanatory view showing a state in which the adapter is externally fitted to the fitting cylindrical portion of the operation rod. DESCRIPTION OF SYMBOLS 1 ... Rod, 3 ... Fitting cylinder part, 4 ... Collar as a locking part, 6
... Locking hole, 8 ... Gas vent hole, 11 ... Fitting hole, 16 ... Reduced diameter portion,
20 ... Operation rod, 21 ... Adapter, 22 ... Locking projection, 23 ... Base end as locked part, 24 ... Slit, 25 ... Cut piece, 26 ...
Guide part as fitting guide cylinder part, 27 ... Operation member, 27 ...
Connecting rods, 29 ... pin members as locking members, 30 ... insertion holes as engaging holes, 33 ... hook portions, 35 ... insertion holes.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliography Shou 57-25450 (JP, U) Seki 55-178957 (JP, U) Seki 55-168952 (JP, U) Seki 54- 161940 (JP, U) Actual public 33-7847 (JP, Y1) Actual public 33-343 (JP, Y1)

Claims (3)

[Scope of utility model registration request] 1. An operating rod having a fitting tubular portion into which the proximal end of a tubular cutout discharge fuse can be inserted and locked at the tip of a rod body provided with a grip portion on the proximal end side, and the operation described above. A general-purpose cut-out operation rod unit that is formed so that it can be externally fitted to the fitting cylindrical portion of the rod, and that the tip has a fitting guide cylindrical portion that can internally support the base end of the current limiting fuse. . 2. An operating rod having a fitting tubular portion into which a proximal end of a discharge fuse for tubular cutout can be inserted and locked at a tip end of a rod body having a grip portion on a proximal end side, and the operation. It is formed so that it can be internally fitted and locked to the fitting cylinder part of the rod,
A general-purpose cutout operation rod unit having a hook portion for opening and closing a box-shaped cutout lid and an operation member having an insertion hole for inserting a contact blade of a fuse tube at an end thereof. 3. An operating rod having a fitting tubular portion into which a proximal end of a discharge fuse for tubular cutout can be inserted and locked at a tip end of a rod body having a grip portion on a proximal end side, and the operation described above. An adapter having a fitting guide cylinder part that is formed so as to be externally fitted to the fitting cylinder part of the rod and capable of internally fitting and supporting the base end of the current limiting fuse; and the fitting cylinder of the operation rod. It is formed so that it can be fitted and locked to the part,
A general-purpose cutout operation rod unit having a hook portion for opening and closing a box-shaped cutout lid and an operation member having an insertion hole for inserting a contact blade of a fuse tube at an end thereof.