JPH03272529A - Disconnecting device - Google Patents

Abstract

PURPOSE:To facilitate positioning between parts and adjusting engagement sizes, reduce an assembling time, and obtain a low cost device by supporting at least two of a hinge of a movable blade, a fixed contact terminal, an operation shaft bearing, and a grounding terminal on the same insulation material. CONSTITUTION:At least two parts of a hinge 2 of a movable blade 1, a fixed contact terminal 3, an operation shaft bearing 7, and a grounding terminal 8 are fixed on the same supporting insulation material 4. The supporting insulation material 4 is produced of injection moulded insulation material, for example, and the hinge 2, fixed contact terminal 3, shaft bearing 7, and grounding terminal 8 are tightened by bolts directly, fixed in injection moulded embedding metal, or injection moulded directly. The movable blade 1 connected with a three-phase operation shaft 6 and an operation rod 5 by an operation mechanism 10 is driven to a connection position A, a disconnecting position B or a grounding position C. Positioning between these parts and adjustment of engagement sizes are thus facilitated, and the assembling time can largely be reduced.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to the structure of a disconnecting device.

[Conventional technology]

FIG. 3 is a sectional view showing a conventional disconnecting device. In the figure, 1 is a movable blade rotatably attached to a hinge 2, 3 is a fixed contact terminal to which the movable blade 1 connects, and 4 is a movable blade rotatably attached to a hinge 2.
Reference numerals a and 4b are support insulators that fix the hinge 2 and fixed contact terminals. 5 is an operating rod connected to the movable blade 1, 6 is a three-phase operating shaft connected to this operating rod 5, and 7 is a bearing that fixes this three-phase operating shaft 6. Reference numeral 8 denotes a grounding terminal of the three-position disconnecting device, which is fixed to the frame 9. 10 is an operating mechanism.

Next, the operation will be explained. By operating the operating mechanism 10, the three-phase operating shaft 6 rotates, and the movable blade 1 is driven via the operating rod 5 to the connected position (A), the disconnected position (B), or the grounded position f (C).

[Problem to be solved by the invention]

As described above, the conventional disconnecting device has hinges 2. Since the fixed contact terminal 3 or the ground terminal 8 is fixed by a separate supporting insulator or frame, there are problems such as it takes time and skill to adjust the connection position of the movable blade and the fixed contact terminal or the ground terminal. was there.

This invention was made to solve the above-mentioned problems, and an object thereof is to provide a disconnecting device that can be easily assembled in a short time.

[Means to solve the problem]

In the disconnecting device according to the present invention, at least two parts of the hinge of the movable blade, the fixed contact terminal, the operating bearing, and the grounding terminal are fixed on the same supporting insulator.

[Effect]

Since at least two of the hinge, fixed contact terminal, operating bearing, and ground terminal in this invention are fixed on the same support insulator, dimensional adjustment is facilitated and assembly time is significantly shortened.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, 1 is a movable blade, 2 is its hinge, 3 is a fixed contact terminal to which the movable blade l is connected, and 4 is a support insulator that fixes the hinge 2 and the fixed contact terminal 3. Reference numeral 5 denotes an operating rod made of an insulator for operating the movable blade 1, which passes through a hole 4c made in the supporting insulator 4.

6 is the 3-phase operating shaft, 7 is the bearing that fixes the 3-phase operating shaft,
Reference numeral 8 indicates a ground terminal of a three-position new path device fixed to the other end of the support insulator 4, and IO indicates an operating mechanism.

Next, the operation will be explained. The operating mechanism 10 moves the movable blade 1 connected to the three-phase operating shaft 6 and the operating rod 5 to the connected position (A), the disconnected position (B), or the grounded position (C).
) is driven by. The supporting insulation 4 is made of cast insulation, for example, and the hinge 2, the fixed contact terminal 3, the bearing 7 and the grounding terminal 8 are either directly bolted, fixed to a cast filler or directly cast. Shaped. The grounding terminal 8 is attached to the support insulator 4 in a state insulated from the ground, and is grounded separately for each phase by a grounding wire.

In the above embodiment, the grounding terminal 8 is mounted insulated and grounded by a grounding wire, but it may be directly connected to the grounding frame.

〔Effect of the invention〕

As described above, according to the present invention, at least any two of the movable blade hinge, fixed contact terminal, operation bearing, and ground terminal are supported on the same insulator, so dimensional adjustment is easy and assembly time is reduced. This has the effect of significantly shortening the time and making it cheaper.

[Brief explanation of drawings]

FIGS. 1 and 2 are a sectional side view and a rear view of a disconnecting device according to an embodiment of the present invention, and FIG. 3 is a sectional view of a conventional disconnecting device. In the figure, 1 is a movable blade, 2 is a hinge, 3 is a fixed contact terminal, 4 is a support insulator, 5 is an operating rod, 6 is an operating shaft, 7
is a bearing, and 8 is a ground terminal. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] In a three-position disconnection device comprising a movable blade rotatably attached to a hinge, a fixed contact terminal and a ground terminal with which the movable blade comes into contact, an operating shaft connected to the movable blade, and an operating bearing, the fixed A disconnecting device characterized in that at least two of a contact terminal, a hinge, a bearing, and a ground terminal are fixed to the same supporting insulator.