JPH02832Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a buried switch with improved operability in closing and opening operations.

[Conventional technology]

Generally, switchgears are installed on poles or in distribution towers on the street, but switches placed in distribution towers are especially important because the street area is decreasing as urbanization progresses. Therefore, there is a tendency for it to be buried underground in the future.

[The problem that the idea aims to solve]

However, when buried underground, there are many buried objects such as gas pipes and water pipes, and it is not possible to take up sufficient burial space, so it is necessary to downsize the switch itself and reduce the space for operating the switch. That is inevitable.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a buried switch that can be opened and closed without reducing the operability of the opening and closing operation even when buried underground in a limited space.

[Means to solve the problem]

In order to achieve the above object, the present invention provides an L-shaped operating section that protrudes horizontally on the side surface of the main body. The tip of this L-shaped operating section faces toward the ground, and an operating arm is provided inside. One end of the operating arm is mechanically connected to a movable electrode within the main body, and the other end is configured such that an operating handle can be attached to and removed from the tip of the operating section.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to FIGS. 1 to 3.

FIG. 1 shows switches 2, 2a, 2b installed in a hand hole 1 having an opening 1a. The switch 2 is connected to the cable 3, and the switch 2
a and 2b are connected to cables 3a and 3b, respectively. Switches 2, 2a, 2b are busses 4, 4
It is connected via a and 4b, and is installed as a branch switch. However, according to this configuration, there is no space for a person to enter to open and close the switches 2, 2a, and 2b, and even if manual operation is performed from the outside, it is difficult to operate accurately due to poor operability. Unable to perform operations.

FIG. 2 shows a first embodiment of the present invention, which includes a hand hole 1 provided underground of a road having a sidewalk surface 1c and a road surface 1b, and a mounting base 7 fixed in the hand hole 1. A switch 2 installed in the switch 2, and an L-shaped operating section 5 having an operating arm (not shown) mechanically connected to the movable electrode for operating the movable electrode in the switch 2 to perform opening/closing operations. and an operating handle 6 which is detachably fixed to the operating arm at the distal end 5' of the operating section 5. Examples of structures for mechanically connecting the operating arm to the movable electrode include:
One end of the horizontal part of the operating arm is fixed to the rotating shaft of the rotary insulator that supports the movable electrode, and the horizontal part and the vertical part of the operating arm are connected by a bevel gear or the like at the right angle part of the operating part 5. An operating handle is attached to and detached from one end (at the tip 5' of the operating section 5). Reference numeral 1e denotes a road cover having an opening 1a, which can be removed when installing the switch 2 or performing other work (connecting cables, etc.).

In the above configuration, after inserting the operating handle 6 through the opening 1a and connecting and fixing the operating handle 6 to the vertical part of the operating arm at the distal end 5', move the operating handle in the desired direction (as shown by the arrow). When rotated, the switch 2 can be opened and closed. For example, when the operating handle 6 is rotated in the closing direction, the rotation is transmitted to the vertical portion of the operating arm, the bevel gear, the horizontal portion of the operating arm, the rotary insulator, and the movable electrode, and the closing operation is performed. The opening operation is also the same, just rotate the operating handle 6 in the opposite direction.

FIG. 3 shows a second embodiment of the present invention, in which a street cover 1 has an opening 1a at the top of the hand hole 1.
e is removably provided, and a lid 1d is provided on the opening 1a.
It is now removable. Switches 2, 2a, and 2b are installed inside the hand hole 1.
Switches 2, 2a, 2b are cables 3, 3a, 3b
and are connected to each other by busses 4, 4a, and 4b. The switches 2, 2a, 2b have L-shaped operation parts 5, 5, as in the first embodiment.
a, 5b, and auxiliary operation tubes 9, 9a, 9b are connected to the ends 5', 5'a, 5'b. The auxiliary operation tubes 9, 9a, 9b have lids 8, 8a,
8b, and is connected to the operating arms (not shown) of the operating parts 5, 5a, 5b, which are connected to the movable electrodes of the switches 2, 2a, 2b by removing the lids 8, 8a, 8b. The operating handle 6 is configured to be connectable to an auxiliary operating arm (not shown) in the operating tubes 9, 9a, 9b. The operating arm has the same structure as the first embodiment, and one end of the auxiliary operating arm is fixed to one end of the vertical portion of the operating arm at the end 5' with a screw or the like.

In the above configuration, since the auxiliary operation tubes 9, 9a, 9b connected to the operation parts 5, 5a, 5b extend to the immediate entrance of the opening 1a of the hand hole 1, the operation handle 6 can be connected to the auxiliary operation tubes. 9,9
It can be easily connected and fixed to the auxiliary operating arms in a and 9b. Therefore, when the operating handle 6 is rotated in a desired direction, the movable electrode can be opened and closed via the aforementioned auxiliary operating arm and the operating arms in the operating sections 5, 5a, and 5b.

[Effect of consideration]

As explained above, according to the buried switch according to the present invention, even if the switch is installed in a handhole (the same applies to a manhole) that does not have enough space for opening and closing operations, the operation handle can be operated. Since the switch can be opened and closed from the ground by connecting to the end of the operating arm provided inside the L-shaped operating section, the switch can be opened and closed reliably without any reduction in operability. .

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the installation state of a buried switch. FIGS. 2 and 3 are explanatory diagrams showing first and second embodiments of the present invention. Explanation of symbols, 1...Handhole (manhole), 2...Switch, 3...Cable, 4...Bus, 5...Operation unit, 6...Handle, 7...Mounting frame, 8...Lid, 9...Auxiliary operation tube.

Claims (1)

[Scope of Claim for Utility Model Registration] An operating part that protrudes horizontally from the side of the main body of a switch buried in an underground handhole, etc., and has an L-shape with the tip facing toward the ground; A first end provided inside the operating portion and mechanically connected to a movable electrode in the switch, and an operating handle that rotates the tip in a direction corresponding to a closing/opening operation of the switch. A buried switch comprising an operating arm having a connected second end.