JPH0216502Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field to which the invention pertains] The present invention relates to a manual operation mechanism for a switchgear equipped with a handle that is manually opened and closed, such as a wiring cutter or an earth leakage cutter.

[Prior art and its problems]

In general, switching devices such as wiring disconnectors, earth leakage disconnectors, and earth leakage disconnectors not only automatically disconnect the fault current in the main circuit to which they are connected, but also have a handle for manually opening and closing the main circuit. ing. Such a handle is rotatably supported by a support plate, and has a grip portion protruding from an opening provided on one side of a case that houses the opening/closing device.

FIG. 1 is an exploded perspective view showing a support plate of a wiring sheath breaker and a manual operation mechanism attached to the support plate. In FIG. 1, the support plate 1 is made by bending a metal plate into a substantially U-shaped cross section, and providing an opening 1a on the connection surface into which a stop plate 2 for restricting rotation of the handle and a handle 3 are inserted. Both opposing sides of 1a are made to protrude, and mounting holes 1b are provided in these protrusions. A stop plate 2, which is formed by bending a metal plate into a U-shape and has shaft holes 2a at both ends thereof, is inserted into the opening 1a so that the shaft hole 2a communicates with the shaft hole 1b of the support plate 1. 2b is a stopper projecting downward on the same plane as the connecting surface of the stop plate 2. Handle 3
is provided with a shaft hole 3a in a direction perpendicular to the rotating direction of the handle 3 and a connecting portion 3b to a link mechanism connected to the handle 3 at one end, and the other end serves as a grip.

To assemble this manual operation mechanism, insert the stop plate 2 into the opening 1a of the support plate 1 so that the shaft hole 2a communicates with the mounting hole 1b, and then insert the handle 3 between both sides of the stop plate 2. Then, the shaft hole 3a is communicated with the mounting hole 1b and the shaft hole 2a, and the shaft pin 4 is inserted as shown by the dotted arrow to integrate the support plate 1, stop plate 2, and handle 3. Such a manual operation mechanism involves inserting both U-shaped legs of the support plate 1 into a case opening of a wiring shear disconnector (not shown), and covering this opening with the connecting surface of the support plate 1 to which the handle 3 is attached. , a link mechanism (not shown) is connected to the connecting portion 3b of the handle 3. Then, the handle 3 is rotated using the shaft pin 4 as a fulcrum.
Open and close the shiya disconnector by tilting it left and right.
When the breaker is closed, the connection part 3 of the handle 3
b collides with the stopper 2b, restricting the rotation of the shredder in the closing direction and preventing damage to the contactor.

By the way, when assembling this manual operation mechanism, the shaft hole 2a of the stop plate 2 inserted into the support plate 1 and the shaft hole 3a of the handle 3 must be completely communicated with the mounting hole 1b of the support plate 1, and the shaft pin 4 must be completely inserted. There are disadvantages in that it has to be held for a long period of time, and assembly is troublesome. Furthermore, as opening/closing devices are becoming increasingly smaller and their members are also becoming smaller, it is difficult to hold three members at the same time when passing a shaft pin through the opening/closing device.

[Purpose of invention]

SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks and provide a manual operating mechanism for a switchgear that is easy to assemble.

[Key points of the idea]

The present invention has a handle that has a shaft hole and projects outside the case, a support plate that has a mounting hole that supports the handle, and a support plate that has a shaft hole and is inserted between the handle and the support plate. In the manual operation mechanism of the opening/closing device, the manual operation mechanism includes a stop plate for restricting rotation, and a shaft pin is passed through each of the holes to rotatably support the handle, wherein a recess is provided at the periphery of the shaft hole of the handle. At the same time, a convex portion protruding inward is provided on the periphery of the shaft hole of the stop plate, and the convex portion is fitted into the concave portion.By doing this, the stop plate and the handle are first assembled together, This integrated structure is then attached to a support plate to simplify and facilitate assembly.

[Example of idea]

Next, an embodiment of the present invention will be described in detail with reference to the handle in FIG. 2, the stop plate in FIG. 3, and the assembly diagram in FIG. 4. In Fig. 2, the handle 3 is provided with a shaft hole 3a and a connecting portion 3b like the conventional handle 3, but in addition to this, a recess 3c surrounding the shaft hole 3a is provided at the periphery of the shaft hole 3a. Different from traditional handles. Next, in FIG. 3, the stop plate 2 is
This stop plate 2 is similar to the conventional stop plate 2 in that a metal plate is bent into a U-shape, and a shaft hole 2a is provided at the top of both ends, and a stopper 2b is further provided.
The difference is that a convex portion 2c that fits into a concave portion 3c of the handle 3 is provided on the periphery of the shaft hole 2a. This convex portion 2c
is formed by punching the periphery of the shaft hole 2a inward. Therefore, a concave portion is formed at the outer peripheral edge of the shaft hole 2a of the stop plate 2. Support plate 1 and shaft pin 4
Since this is completely the same as the conventional one, the explanation of this configuration will be omitted.

To assemble this manual operation mechanism, open both ends of the stop plate 2 as shown by the arrow P in FIG. 3, insert the handle 3 between them, return the stop plate 2 to its original position, and then When the convex portion 2c of the stop plate 2 is fitted into the stop plate 2, the stop plate 2 and the handle 3 become integrated, and the shaft hole 2a and the shaft hole 3a communicate with each other as shown in FIG. Insert the integrated stop plate 2 and handle 3 into the opening 1a of the support plate 1, and
The mounting hole 1b of the stop plate 2 is made to communicate with the shaft hole 2a of the stop plate 2. At this time, the shaft hole 3a also communicates automatically, so
The shaft pin 4 is passed through as shown by the dotted arrow, and the support plate 1, stop plate 2, and handle 3 are integrated.
When inserting the shaft pin 4 into the shaft hole 2a of the stop plate 2,
Since the peripheral edge of the shaft hole 2a is punched inward and a recess is formed on the outside, even if the shaft hole 2a is slightly displaced from the mounting hole 1b of the support plate 1, the shaft pin 4 will first fit into this relatively wide recess. is inserted into the shaft hole 2a, guided by this recess. Thereafter, it easily passes through the shaft hole 3c of the already assembled handle. In this way, the assembly work of this manual operating mechanism is simplified and facilitated.

The work for attaching and assembling this manual operating mechanism to the main body of the cutter and its operating method are completely the same as those of the conventional ones, and therefore, a description thereof will be omitted.

[Effect of idea]

The manual operation mechanism of the opening/closing device according to the present invention is such that the handle and the stop plate are integrated by fitting a convex portion formed by punching the periphery of the shaft hole of the stop plate inward into a recess formed on the periphery of the shaft hole of the handle. At the same time, these shaft holes are made to communicate with each other, and this integrated thing is inserted into the opening of the support plate, and the mounting holes provided on two opposing sides of this opening are made to communicate with the shaft holes of the stop plate. When the shaft pin is inserted into the mounting hole of the support plate, it is then inserted into the relatively large recess of the stop plate, and guided by this recess, it easily connects to the shaft hole of the stop plate and the handle. Penetrates the shaft hole. Furthermore, the assembly work is simpler and easier than in the conventional case where three separate members, ie, a support plate, a stop plate, and a handle, are combined at the same time and the shaft pin is passed through them.

[Brief explanation of drawings]

Fig. 1 is an exploded perspective view showing the manual operating mechanism of a conventional opening/closing device, Figs. 2 to 4 show the manual operating mechanism according to the present invention, Fig. 2 is a perspective view of the handle, and Fig. 3 is a stop plate. FIG. 4 is a perspective view showing how the combined handle and stop plate are assembled into the support plate. 1...Support plate, 1b...Mounting hole of support plate, 2...
...stop plate, 2a...shaft hole of stop plate, 2c...protrusion of stop plate, 3...handle, 3a...shaft hole of handle, 3c...recess of handle.

Claims (1)

[Scope of utility model registration request] A handle that has a shaft hole and projects outside the case; a support plate that has a mounting hole and supports the handle; and a support plate that has a shaft hole and is inserted between the handle and the support plate to limit rotation of the handle. Equipped with a stop plate,
In the manual operation mechanism of the opening/closing device, in which the handle is rotatably supported by passing a shaft pin through each hole, a recess is provided at the periphery of the shaft hole of the handle, and a recess is provided inside the periphery of the shaft hole of the stop plate. 1. A manual operating mechanism for an opening/closing device, characterized in that a protruding portion is provided, and the protruding portion is fitted into the recessed portion.