JPH083936Y2 - Interlock device for insertion type circuit breaker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention provides an insertion type circuit provided in an insertion type circuit breaker for preventing the circuit breaker body from being attached to or detached from a mounting portion in an ON state. The present invention relates to a circuit breaker interlock device.

[Prior Art] FIG. 6 is a perspective view in an ON state showing an example of a conventional insertion type circuit breaker, FIG. 7 is a perspective view in an OFF state in FIG. 6, and FIG.
The drawing is a side view showing a state in which the circuit breaker main body is removed from the mounting portion of FIG.

In the figure, reference numeral (1) is a mounting plate, (2) is a disconnecting device fixed to the mounting plate (1), and (3) is a mounting portion including the mounting plate (1) and the disconnecting device (2). .
(4) is a circuit breaker body detachably attached to the disconnecting device (2), and the circuit breaker body (4) is provided with a handle (4a) for on / off operation. Further, a main circuit terminal (4b) for connection with the disconnecting device (2) is projected on the back surface of the circuit breaker body (4).

(5) has two clasps whose base ends are sandwiched between the mounting plate (1) and the disconnecting device (2) and which extend in the attaching / detaching direction of the circuit breaker body (4). A notch (5a) extending in the operating direction of the handle (4a) is provided at the tip of the stopper plate (5).
Is provided.

(6) is a slide plate as a slide member which is crimped on the operation surface of the circuit breaker body (4) by a pin (10) and reciprocates in the operation direction of the handle (4a) in conjunction with the handle (4a). , This slide plate (6) passes through the inside of each notch (5a) when it is on side and the stopper plate (5)
Protrusions (6a) intersecting with are provided at two places, which prevents the breaker body (4) from being attached to or detached from the disconnecting device (2) in the ON state. Also, the protrusion (6a)
A bent portion (6b), which is bent at a right angle toward the mounting plate (1) side, is provided at the tip of the, and when the slide plate (6) is on, the bent portion (6b) faces the surface of the stopper plate (5) opposite to the surface of the stopper body (4) facing the circuit breaker body (4).

An interlock device is composed of the stopper plate (5) and the slide plate (6).

(7) is a slide plate mounting frame that is attached to the breaker body (4) by a mounting screw (8) and slidably supports the slide plate (6), and (9) is provided in the breaker body (4) and fixed. Screw holes (11), (12), and (13) for inserting screws (not shown) for use are respectively stoppers (5)
Nuts, spring washers and washers for fixing the.

Next, the operation will be described. When the circuit breaker body (4) is attached to the disconnecting device (2) and the handle (4a) is on, the slide plate (6) also moves upward in the figure in conjunction with the handle (4a). At this time, the protrusion (6a)
Is located inside the notch (5a) as shown in an enlarged view in FIG. Therefore, in this state, the circuit breaker body (4)
When the device is to be removed from the disconnecting device (2), the protrusion (6a) comes into contact with the edge of the notch (5a). This prevents the breaker body (4) from being attached or removed in the ON state.

Also, in this state, the protrusion (6a) and the notch (5
When the stopper (5) is deformed in the direction away from the circuit breaker body (4) by attempting to forcibly release the engagement with (a), as shown by the alternate long and short dash line in FIG. ) Contacts the bent portion (6b), preventing the stopper plate (5) from being deformed. As a result, the breaker body (4) is more reliably locked to the disconnecting device (2).

On the other hand, when the handle (4a) is turned off, the slide plate (6) moves downward in the figure in conjunction with this, releasing the engagement between the notch (5a) and the protrusion (6a). To be done.
As a result, the breaker body (4) can be attached to and detached from the disconnecting device (2).

[Problems to be Solved by the Invention] In the interlock device of the conventional insertion type circuit breaker configured as described above, when the breaker body (4) is attached to the disconnecting device (2), the handle When (4a) is on side, the clasp (5) is formed by the bent part (6b).
However, when the handle (4a) is on the off side, the bent portion (6b) does not face the stopper plate (5) as shown in FIG. Thus, when an external force is applied to the stopper plate (5) in the direction of the arrow, the stopper plate (5) is permanently deformed as shown by the chain line in the figure. When the stopper plate (5) is thus deformed, as shown in FIGS. 11 and 12, even if the handle (4a) is turned on, the notch (5a) and the protrusion (6a) are not engaged with each other, and the interlocking member (5a) is not engaged. The function as the lock device is lost, and the circuit breaker body (4) can be attached and detached in the ON state, which is very dangerous.

The present invention has been made to solve the above problems, and prevents the stopper plate from being deformed even when the breaker body is mounted on the mounting portion and the handle is on the off side. Accordingly, it is an object of the present invention to provide an interlock device for an insertion type circuit breaker which can more reliably prevent the breaker main body from being attached or detached while it is in the ON state, and which can enhance safety.

[Means for Solving the Problems] In an interlock device for an insertion type circuit breaker according to the present invention, a slide member is provided with a bent portion facing the surface opposite to the surface of the latch that faces the circuit breaker body. A stopper portion is provided on the stopper plate so as to face the bent portion regardless of the position of the handle when the container body is attached.

[Operation] In this invention, the stopper portion provided on the stopper plate is
By facing the bent portion of the slide member regardless of the position of the handle, the stopper plate is always prevented from being deformed when the breaker body is mounted.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings. First
1 is a perspective view of an insertion type circuit breaker having an interlock device according to an embodiment of the present invention in an ON state, FIG. 2 is a perspective view of FIG. 1 in an OFF state, and FIG. 3 is a mounting view of FIG. It is a side view showing a state in which the circuit breaker body is removed from the section,
The same or corresponding parts as in FIGS. 6 to 8 are designated by the same reference numerals, and the description thereof will be omitted.

In the drawing, the stopper plate (5) has an edge portion on the attachment portion (3) side of the cutout portion (5a) extending in the sliding direction (downward in the figure) of the slide plate (6) more than the edge portion on the opposite side. Is provided with a stopper portion (5b). This stopper part (5b)
When the circuit breaker body (4) is attached to the disconnecting device (2), faces the bent portion (6b) regardless of the position of the handle (4a).

In the insertion type circuit breaker configured as described above, the disconnecting device (2) in the ON state by engaging the projection (6a) with the notch (5a) as in the conventional example.
Attachment / detachment of the circuit breaker body (4) to / from the circuit breaker is prevented. Also,
In such a state, when trying to forcefully release the engagement state between the protrusion (6a) and the notch (5a) and deform the stopper plate (5) away from the circuit breaker body (4), As shown by the alternate long and short dash line in FIG. 4, the stopper portion (5b) contacts the bent portion (6b), so that the stopper plate (5) is prevented from being deformed. On the other hand, even if the stopper plate (5) is forcibly deformed when the handle (4a) is on the off side, the stopper portion (5b) has a bent portion (6b) as shown in FIG. The stopper plate (5) is prevented from being deformed by coming into contact with.

Thus, in the above interlock device, when the circuit breaker body (4) is attached to the disconnecting device (2), deformation of the stopper plate (5) is prevented regardless of the position of the handle (4a), This more reliably prevents the breaker body (4) from being attached or removed while it is in the ON state, and improves safety as compared with the conventional case.

In the above-mentioned embodiment, the mounting part (3) is composed of the mounting plate (1) and the disconnecting device (2), but any other device can be used as long as the breaker body (4) can be inserted and removed. May be

Further, in the above embodiment, the slide plate (6) is provided with the two protrusions (6a) and the two stopper plates (5) are used, but the number thereof is not particularly limited. ,
It may be one each or three or more. Further, the respective positions are not limited to the above embodiment.

Further, although the handle (4a) is operated in the vertical direction in the above embodiment, it may be operated in the horizontal direction.

Furthermore, in the above embodiment, the stopper portion (5b) of the stopper plate (5) is extended more than ever so that the stopper portion (5b) and the bent portion (6b) always face each other even in the off state. However, for example, the stopper portion (5b) has the same size as the conventional example, and the tip of the bent portion (5b) is extended to the sliding direction ON side of the slide plate (6) (upward in the figure). You may

Further, although the slide plate (6) is shown as the slide member in the above embodiment, the slide member (6) is not limited to the plate-like one.

[Effects of the Invention] As described above, in the interlock device of the insertion type circuit breaker of the present invention, the slide member is provided with the bent portion facing the surface opposite to the surface of the stopper plate facing the circuit breaker body. Moreover, since the stopper is provided on the stopper plate so as to face the bent portion regardless of the position of the handle when the circuit breaker body is mounted, even when the circuit breaker body is mounted on the mounting part and the handle is on the off side, It is possible to prevent the stopper plate from being deformed by an external force, thereby more reliably preventing the breaker main body from being attached or detached while it is in the ON state, and it is possible to improve safety.

[Brief description of drawings]

FIG. 1 is a perspective view of an insertion type circuit breaker having an interlock device according to an embodiment of the present invention in an on state, FIG. 2 is a perspective view of the off state of FIG. 1, and FIG. Fig. 4 is a side view showing a state in which the circuit breaker body is removed from the mounting portion of Fig. 4, Fig. 4 is an enlarged perspective view showing an essential part of Fig. 1, and Fig. 5 is an enlarged perspective view showing an essential part of Fig. 2. FIG. 6 is a perspective view of an example of a conventional insertion type circuit breaker in an ON state, FIG. 7 is a perspective view of the OFF state in FIG. 6, and FIG. 8 is a mounting portion to a circuit breaker in FIG. FIG. 9 is a side view showing a state in which the main body is removed, FIG. 9 is an enlarged perspective view showing an essential part of FIG. 6, FIG. 10 is an enlarged perspective view showing an essential part of FIG. 7, and FIG. FIG. 6 is a perspective view showing a deformed state of the stopper plate of FIG. 6, and FIG. 12 is an enlarged perspective view of a main part of FIG. 11. In the figure, (3) is a mounting portion, (4) is a circuit breaker body,
(4a) is a handle, (5) is a stopper plate, (5b) is a stopper part, (6) is a slide plate (slide member), and (6b) is a bent part. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] 1. A stopper plate fixed to a mounting portion to which the circuit breaker body is attached and detached, and extending in the attaching and detaching direction of the circuit breaker body,
It is provided on the operation surface of the circuit breaker body, reciprocates in conjunction with the handle of the circuit breaker body, and engages with the stopper plate when the switch is on to the mounting portion of the circuit breaker body. An interlock device for an insertion-type circuit breaker, which comprises a slide member for preventing attachment / detachment of the snap member, wherein the slide member has a bent portion facing a surface opposite to a surface of the stopper plate facing the breaker body. The insert-type circuit breaker is characterized in that the stopper plate is provided with a stopper portion facing the bent portion regardless of the position of the handle when the breaker body is attached. Interlock device.