JPS5816111Y2 - Circuit breaker operating device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a circuit breaker operating device that turns on and off a circuit breaker disposed in a box or panel by operating the circuit breaker from outside the door.

Conventional circuit breaker operating devices of this type generally have structures as shown in FIGS. 1 to 6.

Of these, FIG. 1 is a front view showing the configuration, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a side view of FIG. 2.

In these Figures 1 to 3, 1 is the circuit breaker body, 2 is a mounting plate for attaching an operating device to be described later, and 3 is a handle, which can control the circuit breaker body 1 on and off. be.

Further, 4 is an operation plate connected to the handle 3, and a pin 5 is fixed to this operation plate 4.

This pin 5 is adapted to move in a circular motion by the handle 3.

On the other hand, 6 is a slide plate, and the elongated hole 2a of the mounting plate 2 is
The circuit breaker is inserted into the circuit breaker and is moved linearly by the pin 5 to move the circuit breaker body.

I indicates a door, and when the door I is closed, only the handle 3 is exposed, but it can be opened and closed.

This door I has an "L" shaped latch 8 as shown in Figure 1.
is installed.

An engaging portion 9a of a lock plate 9 is engaged with a latch 8 of this door T.

One end of the spring 10 is attached to the projection 9blC of the lock plate 9, and the other end of the spring 10 is fixed to the mounting plate 2.

As a result, as is clear from FIG. 2, the lock plate 9 begins to be biased clockwise by the elastic force of the spring 10, but the engaging portion 9a of the lock plate 9 comes into contact with the latch 8. Since they are in contact with each other, the state shown in FIG. 3 is maintained.

Therefore, the door 7 cannot be opened.

4 and 5 are cross-sectional views taken along line A--A in FIG. 3.

Of these, FIG. 4 shows the detailed configuration of the conventional circuit breaker operating device. ing.

1. The protrusion 4a of the operation panel 4 is in the on state position (at this time,
When the circuit breaker main body 1 is in the ON state), that is, when the operation plate 4 is in the position shown by the solid line in the figure, the protrusion 4 of the operation plate 4
b is spaced apart from the protruding portion 9b of the lock plate 9, and the engaging portion 9a
and latch 8 are up to 1 engaged.

Now, the handle 3 is rotated clockwise, and the protrusion 4a of the operation plate 4 is in the off state position (at this time, the circuit breaker main body 1 is in the off state).

) When setting the VC, the protrusion 4b of the operation plate 4 is in contact with the protrusion 9b of the lock plate 9, as shown by the dashed line in the figure, but the engagement part 9a and the latch 8 are still not engaged. It is in a combined state.

Therefore, door 7 cannot be opened.

However, when performing maintenance or inspection of the circuit breaker body 1 inside the door I, the door I must be opened.

Here, the handle 3 is rotated by a predetermined angle from the off-state position in the direction from the on-state position to the off-state position, and the protrusion 4a of the operation plate 4 is set to the open state position.

At this time, the protrusion 4b of the operation plate 4 pushes the protrusion 9b of the lock plate 9 against the elastic force of the spring 10, thereby rotating the lock plate 9 clockwise.

Therefore, the engagement portion 9a of the lock plate 9 and the latch 8 of the door 7 are disengaged.

FIG. 5 shows a state in which the locking portion 9a and the latch 8 are disengaged.

The door 7 can be opened in this state.

However, when the handle 3 is released, the lock plate 9 is returned to the off-state position shown in FIG. 4 by the force of the spring 10, so that the door 7 cannot be opened.

Further, the pin 5 of the slide plate 6 shown in FIG. 6 (viewed from line B--B in FIG. 3) is returned to the OFF state (from the two-dot chain line to the one-dot chain line) by the spring 10.

Note that the solid line indicates the on position.

In such a conventional circuit breaker operating device, the handle 3
The door cannot be opened unless you hold the circuit breaker in your hand and hold it in the open position.For example, if multiple circuit breaker operating devices are installed, each handle must be held in the open position. It had drawbacks such as requiring multiple people to maintain it.

This invention was made to eliminate the above-mentioned drawbacks of the conventional methods, and by adding a new structure for holding the door in a state where it can be opened, the door can be easily opened with just one movement of the handle. To provide a circuit breaker operating device which can open a door by one person using each operating device when a plurality of operating devices are provided in a box or panel.

Hereinafter, embodiments of the circuit breaker operating device of this invention will be described based on the drawings.

7 and 8 show essential parts of one embodiment, and the explanation and illustration of the same parts as in FIGS. 1 to 6 will be omitted to avoid duplication, and the same parts as in FIGS. 1 to 6 will be omitted. 6
I will focus on the parts that differ from the diagram.

The buttons in Figure 7 and Figure 8 are the B- buttons in Figure 3 respectively.
The slide plate 60 portion is taken out as seen from line B.

In both FIGS. 7 and 8, an rLJ-shaped groove 6a into which the pin 5 of the handle 3 is inserted is provided in the slide plate 6.

This slide plate 6 is provided with a lever 12, and the lever 12 rotates about a shaft 11 as a rotation axis.

One end of a spring 13 is locked to the free end of this lever 12, and the other end of this spring 13 is fixed to a predetermined position on a slide plate 60.

Among them, 12a is a stopper for the lever 12.

Other parts are the same as those in FIGS. 1 to 6.

Now, when the button is pressed in FIG. 7, the pin 5 connected to the handle 3 moves from the ON state shown by the solid line to the OFF state shown by the dashed line.

At this time, the moment of the spring 13 stretched between the lever 12 and the slide plate 6 is greater than the operating moment of the circuit breaker body 1, so the normal slide plate 6 in the state shown in FIG.
is linearly moved by the pin 5 to move the circuit breaker body 1 from on to off.

At this time, as in the conventional case, the protrusion 4b of the operation plate 4 is connected to the lock plate 9.
However, the lock plate 9 still does not move and is in the state shown in FIG. 4.

Then, the handle 3 is further rotated clockwise from the off state position by a predetermined angle.

At this time, when the circuit breaker main body 1 has reached its fullest movement, the slide plate 6 has a specific weight, and the lever 12 is rotated clockwise by the pin 5 as shown by the dashed line as shown in FIG.

By the rotations, the pin 5 finally moves to the position shown by the solid line and is stopped by the rLJ-shaped groove 6a of the slide plate 6.

At this time, the lever 12 returns to the solid line state due to the spring 13.

Therefore, the pin 5 attempts to return counterclockwise due to the spring 10, but the lever 12 pulled by the spring 13 prevents it from moving.

This is because the moment of spring 13 is made larger than the moment of spring 10.

Therefore, as in the conventional case, even if the hand is released from the handle 3, the lock plate 9 will not rotate even if the spring force exerted by the spring 10 tries to rotate the lock plate 9 counterclockwise. , is in the state shown in FIG.

In this way, the latch 8 of the door 7 and the engaging portion 9a of the lock plate 9 can be kept in a disengaged state, so that the door 7 can always be opened.

Next, when setting the operation plate 4 to the OFF state or ON state with the door 7 closed, rotate the handle 3 counterclockwise, and the lever 12 will be pinned to the position indicated by the chain line. 5
, and returns to the state shown in FIG.

As a result, the latch 8 of the door r and the engaging portion 9a of the lock plate 9 are engaged, and the door I is brought into a closed state.

As described above, according to this invention, the operation plate is moved from the off-state position of the circuit breaker body to a predetermined position, and the slide plate is locked by the spring of the lever, so that the lock plate can be opened in an unlatched state. Since the structure is configured to hold the door in place, the door can be held in a state in which the door and lock plate are released by hand, unlike conventional methods, so the door can be easily opened with just one movement of the handle. In particular, when multiple operating devices are installed in a box or panel, there is no need to hold each operating device by hand with the above-mentioned locks removed. Therefore, the door can be opened by one person.

[Brief explanation of drawings]

Fig. 1 is a front view of a conventional circuit breaker operating device, Fig. 2 is a plan view of a conventional φ circuit breaker operating device, Fig. 3 is a white side view of Fig. 2, and Figs. A plan configuration diagram for explaining the on/off control operation when the figure is viewed from the arrow direction of line A-A, and FIG. 6 is a conventional circuit breaker operation viewed from the arrow direction of line B-B in FIG. 3. FIG. 7 is a plan view showing the slide plate when the lock plate is not moving in one embodiment of the circuit breaker operation device of this invention, and FIG. 8 is a diagram showing the sliding plate in the device. FIG. 7 is a plan view showing a portion of a sliding plate when the lock plate and the door in the operating device are in a disengaged state. 1... Breaker body, 2... Mounting plate, 3
...Handle, 4...Operation panel, 5...
...Pin, 6...Slide plate, 7...
Door, 8...latch, 9...lock plate, 10.
13...Spring, 11...Shaft, 12...
...Lever, Nao, the same reference numerals in the drawings indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] It has a mounting plate 2 provided on the circuit breaker body 1, a latch 8 provided on the door 7 that can be opened and closed with respect to the mounting plate 2, and an engaging portion 9a that removably engages with the latch 8. A locking plate 9 connected to the mounting plate 2 by a spring 10 biased in the same direction, and the mounting plate 2
A slide plate 6 is supported in a linear reciprocating manner to turn on and off the circuit breaker body 1, and a protrusion 9b of the lock plate 9 is connected to and rotated with a handle 3 disposed on the outside of the door I. It includes an operation plate 4 having a protrusion 4b to be engaged, and a pin 5 which is engaged with the slide plate 6 and is moved circularly by the handle 3, and when the handle 30 is rotated, the slide plate 6 is moved to the circuit breaker main body 1. In the circuit breaker operating device, the door 1 is opened by moving the door 1 beyond the off position and rotating the lock plate 9 via the operation plate 4 so as to separate it from the latch 8. A bent hole 6a to be engaged is formed, a lever 12 that contacts the pin 5 is pivoted to the slide plate 6, and the lever 12 is connected to the slide plate 6 by a spring 1'3.
A circuit breaker operating device characterized in that a spring 13 biases a slide plate 6 so as to hold the pin 5 in a position where the operating plate 4 has moved beyond the above-mentioned OFF position of the bent hole 6a.