JPS6025809Y2 - Circuit breaker operating device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a circuit breaker panel operating device that allows the circuit breaker to be operated from outside the panel, and particularly to a locking device thereof.

Conventionally, there have been devices of this type as shown in FIGS. 1 and 2.

In the figure, 1 is a hook provided on the door (not shown) side of the panel, 2 is a shaft that is the center of rotation of this hook 1 and also has the role of fixing the hook 1, and 8b is a circuit breaker in the panel. (not shown) side, and engages with and locks the hook 1; 3 is a spring that urges the hook 1 in the direction in which the hook 1 is locked with the protrusion 8b; 4 is a spring This is a panel that is fixed to the door of the panel, fixes each component, and prevents the hook 1 from falling.

Next, the operation will be explained.

When the door of the board is closed in direction B, the hook 1 is pressed against the convex portion 8b, and as a result, the hook 1 receives a force f on its inclined surface 1a, which acts as a moment whose arm is the length 11 in FIG.

Then, the hook 1 rotates and escapes as shown by the dashed line, but since the hook 1 is urged in the opposite direction to the above moment by the spring 3, the protrusion 8b climbs over the protrusion of the hook 1 and locks it. can be completed.

In the above operation, the shaft 2 is nearly parallel to the closing direction B of the panel door, so arm 1 □ in Fig. 1 is required to obtain the rotational force of the hook 1, so the hook 1 is bent into an L shape. It is being

Since the locking device in the conventional circuit breaker operating device is constructed as described above, the force f acting on the hook 1 causes a moment whose arm is 1° in length in FIG.
Hook rotation is not smooth.

In addition, when the hook 1 is engaged during locking, a bending moment with an arm of 1° in FIG. 2 acts, and the hook 1 is unstable in terms of strength and positioning of the lock.
Another disadvantage is that it requires a large space for its 1° long arms.

This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and by changing the axis of rotation of the hook to a direction perpendicular to the direction of movement of the board door, the hook was made into a flat shape. The purpose is to provide a reliable and compact circuit breaker operating device.

An embodiment of this invention will be described below with reference to the drawings.

Figures 3 to 8 show an operating device for a circuit breaker according to an embodiment of this invention, and in the figures, 6 is a panel door;
7 is a panel provided to close the through hole 6a of the panel door 6; 7 is an external operating handle provided on the outer surface of the panel 4 so as to be rotatable in a plane parallel to the panel door; It is fixed to the external operation handle 7 and is connected to the through hole 6 of the door 6 of the panel.
a) A protruding rod with a square cross section provided protruding inside, 20 is a circuit breaker provided inside 6 of the door of the panel,
20a is the opening/closing operation knob of this circuit breaker 20;
A box body 9 is attached to the circuit breaker 20 and can be rotated around a shaft 9a to operate the opening/closing operation handle 20a with its rotating piece 9b; 8 is attached to the tip of the shaft 9a; This is a junction portion that is connected to the protruding rod 7a by inserting the protruding rod 7a into the rectangular through hole 8a, and this junction portion 8 and the box body 9
This constitutes a rotation transmitting body 12 that is combined with the protruding rod 7a and rotated by the rotation of the external operation handle 7, and operates the handle 20a of the circuit breaker 20.

Further, 8b is a convex portion provided on one side of the junction portion 8 over a predetermined angular range 0, and 1 is a convex portion provided on one side of the junction portion 8;
It is a hook that is rotatably provided around a shaft 2 on the inner surface of the board and engages with the convex portion 8b of the junction portion 8. The shaft 2, which is the center of rotation of this hook 1, is in the moving direction B of the door 6 of the panel.
The hook 1 is provided in a plane substantially perpendicular to the axis 2, that is, in a plane parallel to the door 6 of the board, and the hook 1 is a plate-shaped body located in a plane perpendicular to the axis 2.

Further, 4a is a groove provided in the panel 4 to prevent the hook 1 from falling down, 4b is a groove provided in the panel 4 for positioning the shaft 2, and 3 is a groove provided in the panel 4 to prevent the hook 1 from falling over. 4C is a groove provided in the panel 4 to accommodate the spring 3, 5 is a cover for fixing the shaft 2 to the panel 4, and 5a is for inserting the hook 1 into the cover 5. The provided elongated holes lb and lc are projections formed at the base of the hook 1, and 10 is a base 10b for external pressing operation and a recess 10a that engages with the projection 1b of the hook 1.
A button 4d having a button 4d is a groove opened on the outer surface of the panel 4 and used to accommodate the button 10.

Next, the operation will be explained.

FIG. 4 shows the state when the door 6 of the board is closed in the direction B. When the door 6 of the board is closed in the direction B, the inclined surface 1 of the hook 1 is shown.
a hits the convex portion 8b of the joint portion 8, and its acting force f
becomes a rotational force centered on the shaft 2, rotates and pushes the hook 1, and when the protruding rod 7a with a square cross section is inserted into the through hole 8a of the junction part 8 and the connection with the junction part 8 is completed, the hook 1 is rotated and pushed away. As shown in FIG. 3, the hook 1 is urged to be locked by the spring 3, and the hook 1 and the protrusion 8b are pressed together.
are engaged, and locking is completed.

After locking is completed as described above, by rotating the external operating handle 7, the protruding rod 7a and the joint portion 8. Rotate the shaft 9at box body 9, and rotate the rotating piece 9b of the box body 9.
The opening/closing operation handle 20a of the circuit breaker 20 can be operated by.

Here, as shown in FIG. 5, a convex portion 8b that engages with the hook 1
is formed only in a predetermined angle range 0, so the convex portion 8
By adjusting the positional relationship between the range 0 of b and the hook 1, it is possible to adjust the lock so that it is not locked when the external operating handle 7 is in the desired position, so that it is always locked when the circuit breaker is closed. It is possible to meet the requirements such as making sure that the

Further, this locking device can also be unlocked from the outside of the panel 4.

That is, the groove 4d of the panel 4 in which the button 10 is housed is covered by the external operating handle 7 in FIG. 7, but by slightly rotating the external operating handle 7, it can be opened from the outside as shown in FIG. When the base 10b of the button 10 is pressed, the button 10 is moved by the protrusion 1 of the hook 1 engaged with its recess 10a.
b is pushed up and the hook 1 is rotated in the direction of the arrow X, thereby releasing the engagement between the hook 1 and the convex portion 8b.

At this time, the protrusion 1b of the hook 1 comes into contact with the back surface of the cover 5 and serves as a stopper that limits the rotation of the hook 1.

Further, the protrusion 1c of the hook 1 is connected to the hook 1 as shown in FIG.
When the hook is rotated by the spring 3 in the direction of engaging with the convex portion 8b, it comes into contact with the surface of the cover 5 and serves as a stopper that limits the rotation of the hook 1.

The operating device for the circuit breaker having such a configuration and operation is that the rotation axis 2 of the hook 1 is changed from being parallel to the moving direction of the door 6 of the conventional panel to being perpendicular to the direction of movement of the door 6 of the panel. As a result, there is no bending moment with respect to the rotational axis of the hook, and smooth rotational force of the hook can be obtained.

In addition, the bending moment on the hook that occurs when locking is eliminated, and the load on the hook is only a tensile load.
Increased reliability.

Furthermore, since the hook is no longer L-shaped, the device can be made more compact.

The lock can also be unlocked from the outside by pressing the button.

As described above, according to this invention, the axis of rotation of the hook is made perpendicular to the moving direction of the panel door, so smooth rotation of the hook can be obtained by making the hook into a flat surface.Moreover, the hook is L-shaped. This has the effect of making the device more compact.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a locking device of a conventional circuit breaker operating device, Fig. 2 is a cross-sectional side view taken along line A-A, and Fig. 3 is an operation of a circuit breaker according to an embodiment of the present invention. 4 is a cross-sectional side view showing the operating state of the locking device; FIG. 5 is a front view of the junction portion of the device; FIG. 6 is a partially exploded perspective view of the locking device of the device. Figure, 7th
The figure is a front view of the operating device, and FIG. 8 is a cross-sectional side view of the device in a state in which the lock is released from the outside. 1...Hook, 1b...Protrusion, 2...
...Shaft, 3...Spring, 4...Panel, 6...Panel door, 6a...Through hole, 7
......External operation handle, 7a...Protruding rod, 12...Rotation transmitting body, 8b...Protrusion, 10...Button , 20...Circuit breaker, 20a...Handle. In the drawings, the same reference numerals indicate the same or equivalent parts.

Claims (2)

[Scope of utility model registration request] (1) A panel provided to close the through hole of the panel door, an external operating knob provided on the outer surface of this panel so as to be rotatable in a plane parallel to the panel door, and A protruding rod is provided to protrude inward from a through hole in the door of the panel fixed to the operating handle, and a protruding rod is attached to a circuit breaker inside the door of the panel and coupled with the protruding bar to rotate the external operating handle. a rotation transmitting body that is rotated by the motion and operates the handle of the circuit breaker; a convex portion provided on the side of the rotation transmitting body; and a direction in which the door of the panel is closed on the inner surface of the panel. A hook made of a plate-like body in one plane that is rotatably provided around an axis disposed in a substantially vertical direction and that engages with a convex portion of the rotation transmitting body; and a hook that engages with the convex portion. An operating device for a circuit breaker, comprising: a spring biasing the circuit breaker in the direction of the circuit breaker. (2) A button that engages with a protrusion formed on a portion of the hook and rotates the hook under pressure to release the engagement between the hook and the convex portion is provided so as to be operable from the outer surface of the panel. An operating device for a circuit breaker according to claim 1, characterized in that: