JPH0429512A - Interlock unit for insertion type circuit breaker provided with electrical operating unit - Google Patents

Abstract

PURPOSE:To eliminate holding work for preventing sliding of a slide board and to improve assembling workability by a method wherein the sliding board can be fixed only after assemblage of an electric operating unit in an interlock unit provided in order to prevent removal of a circuit breaker from a disconnector in ON state. CONSTITUTION:One side is opened to the upper edge of a sliding board 6 whereas the other side is opened wide so that the head of a headed pin 8 can pass through. Each sliding groove 9 is provided with a fixing port 10. Since each headed pin 8 can be inserted through each fixing port 10 into each sliding groove 9 after assemblage of an electrical operating unit 3 in a circuit breaker 1, the sliding board 3 can be fixed easily and since the sliding board 3 is not required to be held at the time of assemblage of the electrical operating unit 3, assembling workability is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an interlock device installed to prevent a circuit breaker from being removed from a disconnecting device when it is in an ON state.

[Conventional technology]

FIG. 7 is an external perspective view of a circuit breaker equipped with a conventional interlock device in an ON state. In the figure,
(1) is the circuit breaker, (la) is the circuit breaker (1)
N, a handle for opening and closing the OFF state, (2) a disconnecting device for inserting the main circuit terminal protruding from the back side of the circuit breaker (1), and (3) a handle for electrically turning on the circuit breaker (1) from a distance.
, an electrical operating device for opening and closing OFF, (4) a mounting screw for fixing the electrical operating device (3) to the circuit breaker (1), and (5) a mounting screw between the disconnecting device (2) and the mounting plate (7). The pair of glasses (6) sandwiched between them is a slide plate that engages with the pair of glasses (9) to prevent the circuit breaker (1) from being removed from the disconnecting device (2) when it is in the ON state.

8 is a side view of the electric operating device 1t(3) of FIG. 7 removed from the circuit breaker (1), and FIG. 9 is a view of FIG. 8 viewed from the back. The slide plate (6) has a headed pin (a) in order to be able to slide over the electric operation device (a).
It is attached by caulking, and the handle (la) is
The sliding groove (9) is linked to the handle (la) when it is in the N position.
slide along the eyeglasses (0) to engage the circuit breaker (0).
When 1) is in the ON state, it cannot be removed from the disconnecting device (2).

When the circuit breaker (1) shown in Fig. 7 is in the ON state, the hand/7 (1a) is in the ON state, and the slide plate (e) that is interlocked with it also engages with the eyeglasses (5). When the circuit breaker (1) is in the ON state, the disconnecting device (2)
It is now in a state where it cannot be removed.

When the circuit breaker (1) is in the OFF state as shown in FIG. 10, the handle (1a) is in the 0IFF state, and the slide plate (■) interlocked with the handle (1a) is also disengaged from the eyeglasses (5). Due to this release, circuit breaker (1)
Since the non-removable engagement is released, the circuit breaker (1) to which the electric operating device (3) is attached by the mounting screw (4) can be removed from the disconnecting device (2).

[Problem to be solved by the invention]

In the conventional interlock device as described above, the slide plate (6) is attached to the electrical operation device (J) by caulking with the headed pin (8), so when assembling the electric operation bag far (3), the slide plate (6) 6) repeatedly slides from the ON side to the OFF side, so the slide plate (0) must be held so that it does not slide, resulting in a problem that assembly workability is poor.

The present invention has been made to solve these problems, and an object of the present invention is to provide an interlock device in which a slide plate can be attached after assembling an electric operating device, thereby improving assembly workability.

[Means to solve the problem]

The interlock device according to the present invention allows the sliding plate to be attached after the electric operating device is assembled.

[Effect]

In this invention, since the slide plate can be attached after the electric operating device is assembled, the work of holding the slide plate so that it does not slide is eliminated, and the assembling work efficiency is improved.

〔Example〕

An embodiment of the invention will be described with reference to FIGS. 1 and 2. FIG. Fig. 1 is a diagram showing the ON state of the circuit breaker after attaching the slide plate to the back of the electric operating device, and Fig. 2 is a diagram showing the 0FIP state of the circuit breaker, which is the same as the conventional one or Corresponding parts are denoted by the same reference numerals and their explanation will be omitted.

In the figure, (10) is a headed pin (ε) in the sliding groove (9).
One opening is at the upper edge of the slide plate (6), and the other is a large opening through which the head of the headed pin (8) passes.

By providing a mounting port (10) in each sliding groove (9) in this way, after assembling the electric operating device (3) to the circuit breaker (1), it is possible to Since the pins (8) can be inserted into the respective sliding grooves (9), the slide plate (3) can be easily attached.

Therefore, when assembling the electric operating device (31), the slide plate (3
Since there is no need to hold it, assembly work efficiency is improved.

As shown in FIG. 3, even if the mounting port (10) is provided below the sliding groove (9) and has a large opening, the same effect as in the above embodiment can be obtained.

In the embodiment shown in FIG. 1 above, when the slide plate (6) moves in the OFF direction (downward), the headed pin (8)
0) and the slide plate (6) may fall, so as shown in Figures 4 and 5, the stopper pin (11) protruding from the electric operating device (3) ) A long hole (12) is provided to guide the slide plate (6), and when the slide plate (6) is in the OFF position (the state shown in Fig. 5), the long hole (12) is engaged with the stopper pin (11). The upper part of the plate (a) prevents it from coming out. This elongated hole (12) also allows adjustment of the stroke of the slide plate (6).

Incidentally, even if the stopper pin (11) is provided to engage with the upper end of the slide plate (61) as shown in FIG. 6, it is possible to prevent the slide plate (0) from being pulled out from above.

〔Effect of the invention〕

As described above, according to the present invention, since the slide plate can be attached after the electric operation device is assembled, the operation can be easily performed without holding the slide plate when assembling the electric operation device, and the assembly work efficiency is improved. is obtained.

[Brief explanation of drawings]

Fig. 1 shows an embodiment of the present invention, and shows the ON state of the circuit breaker after the slide plate is attached to the back of the electric operating device, and Fig. 2 shows the 0FIIF state of Fig. 1. 3 is a diagram showing a modification of FIG. 1, FIG. 4 is the same diagram as FIG. 1 showing another embodiment of the invention, and FIG. 5 is a diagram showing the 0FIF state of FIG. 4. , Fig. 6 is a diagram showing a modification of Fig. 4, Fig. 7 is an external perspective view of the conventional device in the ON state, and Fig. 8 is a side view of the electric operating device shown in Fig. 7 after being removed from the circuit breaker. FIG. 9 is a rear view of FIG. 8, and FIG. 10 is an external perspective view of FIG. 7 in the OFF state. In the figure, (1) is a circuit breaker, (2) is a disconnecting device,
(3 is an electric operation device, (51 is a pair of eyeglasses, (6) is a slide plate, (8) is a pin, (9 is a sliding groove, and (10) is a mounting opening. The same reference numerals in each figure are the same. or a significant portion.

Claims (1)

[Claims] (1) A circuit breaker whose contacts are opened and closed by an electrical operation device, a main circuit terminal protruding from the back side of the circuit breaker, a disconnecting device facing the main circuit terminal, and a an interlock device having glasses and a slide plate for preventing the circuit breaker from being removed from the disconnection device, and the slide plate attached to the back surface of the electric operation device is An interlock device for an insertion type circuit breaker with an electric operating device, characterized in that it can be attached after being assembled to the circuit breaker.