JPS5846530A - Breaker operating mechanism - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] The present invention relates to a breaker closing operation mechanism.

It is desirable for a breaker to not be damaged if the circuit breaker is accidentally turned on again after it has been turned on, but in the past, no consideration was given to re-turning on the circuit breaker, or there was no consideration given to it. is configured to temporarily cut off the circuit when it is turned on again to prevent damage to the mechanisms of each part.

FIG. 1 shows an example of the configuration of a conventional circuit breaker in the cut-off state, where l is the operating handle and the operating handle/
The roller operated by the latch 3 is engaged with the operating plate q, and when the operating handle l is rotated about the axis j, the operating plate q is also rotated accordingly. This operation board 41%
A closing spring 6 is hooked to C through a pin 6m, and an operating rod 7 is connected through a pin t.

Reference numeral 9 denotes an opening/closing lever which is connected to the other end of the operating rod 7 via a link 10, //. Link 10°/
A locking lever 13 is connected to the connecting pin /, 2 of /, and a trip lever 15 driven by a tripping coil /l is installed in the slot 16 of the locking lever 13. The locking lever 13 is locked by rotating the lever lS.
is designed to slide. In addition, the opening/closing lever day I
IXIIM has been imported for 77km1, and when the opening/closing lever t is rotated at the time of input, the opening/closing shaft also rotates and the contact point (
(not shown) is closed and a 10W# generator is turned on. In addition, if an abnormal situation occurs in the circuit, the trip filter l
#O Plunger It rotates the trip lever /1 clockwise, so the locking lever /J moves from the state shown in Figure 3 (described later) to the position shown in Figure 1, and the opening/closing shaft 12 rotates via the opening/closing lever. The circuit is cut off when the motor moves.

In order to turn on the breaker in such a cut-off state,
When the operating handle I is operated in the closing direction, the roller 2 and latch 3 move the paper-making operation plate in the summer clockwise direction.

As a result, the closing spring 6 is extended and input energy begins to be accumulated, and the locking lever/J is moved from its slot 74K along the trip lever tjyE through the operating rod 7 and the link lσ, as shown in FIG. Slide it into position. When the operation handle 1 is further operated in the closing direction, the latch 3 is disengaged from the roller, and at the same time, the roller 1 rides up to the arcuate dam of the operation plate, and the lever 1 and the operation plate are disengaged. From this K, the operating plate DA rotates clockwise due to the tension of the closing spring≦, and the operating rod 7 is interlocked.
Each member is in the closed state shown in FIG. That is,
The trip lever 15 rotates counterclockwise to move the plunger IK to the left, and the half-moon shaped trip lever shaft tS locks the locking lever 13, and the opening/closing shaft 17 is rotated via the opening/closing lever de. It is thrown in by rotating it.

In the above-mentioned closed state, if the operating handle l is operated in the counter-closing direction as shown in FIG. Therefore, the reloading force is applied to the operating rod 7 and the link 10.

// , is transmitted to a series of link mechanisms of the locking lever /J and the opening/closing lever 9, and these link mechanisms may be damaged.

Therefore, as shown in FIG. S, a device has been proposed in which the circuit is cut off when the power is turned on again to prevent damage to the link mechanism or the like. That is, when the operating handle l is operated in the counter-closing direction to perform a re-closing operation, the operating handle I rotates the lever X counterclockwise, and the bushing rod n moves to the trip lever
rotate in the direction of the hour hand. As a result, as described above, the locking lever /3 is released from the trip lever /S, so the opening/closing shaft rotates and the circuit is cut off. Therefore, when the re-insertion operation is performed, each link etc. performs the ejection operation again.
-s Excessive force may not be applied to the link mechanism, etc.

However, in this type of cut-off, if the circuit is turned off and turned on again, the circuit is cut off and the link mechanism is prevented from being damaged. This causes the disadvantage of interruption, i.e. changing the load, and also increases the complexity and complexity of the mechanism.
Not only is this method expensive and expensive, but it also has the disadvantage of shortening the life of the electrical contacts and the arc-extinguishing medium due to the interruption of the mechanism's operation.

The purpose of the present invention is to eliminate such conventional drawbacks, so that after a single input operation, even if the operation handle is input again,
To provide a closing operation mechanism for a breaker in which an operation handle and an operation plate are engaged to make it dangerous.

In other words, the present invention includes an opening/closing lever that is biased by a shutoff spring and rotates an opening/closing shaft that turns on and off the interrupter, and an opening/closing lever that is rotatably supported on the shaft and engages and disengages with the operating knob. an operation plate including a retaining part and connected to the input barrel;
a connecting lever mechanism that connects the operating plate to the opening/closing lever, and the breaker is inserted into the closing spring by engaging the operating handle with the retaining portion and rotating the operating plate. In the breaker closing operation mechanism, the breaker is configured to accumulate energy and detach the 71-strand from the retaining portion to release the input energy and close the breaker, the chain interlocking with the opening/closing shaft or the opening/closing lever. A locking means is provided, and the locking means closes the retaining portion to engage the operating knob only when the operating plate is in the non-accumulating position KTo9 of input energy and the opening/closing lever is in the closing position. It is characterized by being configured to make it impossible to engage with the part.

Hereinafter, the present invention will be explained based on a brief explanation. In the following, the same reference numerals are given to the same parts as in Figures 1E1 to 1J.

No. 4g shows an example of the configuration of the present invention in a cut-off state. Each circular arc portion #C is formed in advance. This interlock lever is connected to the operating plate #BK with a closing spring through a pin, and the support arm V fixed to the opening/closing shaft n is connected to the long hole #BK of the interlock lever through a pin. . That is, the pin q is designed to urge the elongated hole #B.

I installed this kind of intercook lever and interrupter O.
In the operating mechanism, when the operating handle 1 is moved in the closing direction, the closing spring 4 is stretched and the input energy begins to be gradually accumulated, as shown in the figure, and the operating handle 1 and the operation result are When the bond is released, a closed state as shown in 1g' is obtained.

Here, in the closed state shown in Fig. 9, the interlock lever Q and the operation plate D are arranged in a positional relationship as shown in detail in Fig. 7θ, and the dimensions of each part are set as follows. It is a rule. That is, in Fig. 1θ, the arc portion 4IB of the operation plate is formed on the radius R4 centered on the center of the shaft 30, and when the closing operation is performed by the closing spring B, the circular arc portion 4IB
so that it rotates clockwise along the rollercoat. On the other hand, an arcuate portion f6Q of the interlock lever was formed on a radius R2 centered on the axis j of the shaft j, and the operating handle l was operated in the counter-closing direction in the state shown in FIG. At times, the pin 2 which is coaxial with the roller is placed above the arc portion me.

In the circuit breaker closing operation mechanism configured in this way, as shown in Figure 1, Figure 1, and Figure 9, the closing operation from the shut-off state to the closing state is the same as that of conventional circuit breakers. , as shown in Fig. 1O, when the operation handle l is operated in the counter-loading direction in order to shift to the re-loading operation, the roller Vincom moves to the arcuate portion mc of the ink lock lever %.
get on top of it. Therefore, when re-entering the
Since it is possible to securely match the operation panel with the operation board, it is possible to prevent erroneous operations where only one person has to re-throw the ball.

111i! Another embodiment of the Morimoto invention is shown, in which a lock plate is used in place of the interlock lever. .

Figure 11 shows the state in which the circuit breaker is turned on, where:
Q is a locking plate, one end of the opening/closing shaft ty K is fixed, and 1
Moves with the llI axis. Therefore, as shown in the figure, when the opening/closing shaft n is in the input position KToD and the operation function is in the input energy O non-storage position, the free end of the first locking plate Q is in the same manner as shown in the first IJ @K. , prevents the operation handle l from engaging with the operation function.

Therefore, re-insertion can be prevented.

As explained above, according to the present invention, after the closing operation, the operation handle and the operation plate are prevented from engaging even if the operation handle is turned on again, thereby preventing damage to the link mechanism, etc. I have nothing to give.

According to the present invention, it is possible to prevent the reinsertion operation without cutting off the - path, thereby improving the durability of each component.

Furthermore, according to the present invention, a breaker operating mechanism that is simple in structure, inexpensive, and highly reliable can be obtained.

[Brief explanation of the drawing]

Fig. 7 is a block diagram showing an example of the operating mechanism of a conventional circuit breaker in the cut-off state, Fig. 2 is a block diagram showing the progress of the closing operation, and Figure 3 is a block diagram showing the closing state. The figure is a block diagram showing a state in which the operating handle is operated in the opposite direction after the closing operation, Figure 3 is a block diagram showing another example of the conventional operating mechanism, and Figure 4 is a diagram showing one embodiment of the present invention. Fig. 7 is a block diagram showing the shape of the interlock lever; Fig. 1 is a block diagram showing the progress of the closing operation; Fig. 7 is a block diagram showing the closing state; FIG. 10 is an explanatory diagram for explaining the main part of FIG. 9, and FIG. 1I is a configuration diagram showing another embodiment of the present invention. /-...operation handle, controller...roller com, ≦mu,
t, U-...bin, 4...spring, 7...operating rod, D...opening/closing lever, tO, U-link, 12--connecting bin, 13...locking lever, l #・
...Tripping coil. /j'-) Lip lever, nm...Trip lever shaft, 14--Slot hole, 〃...Opening/closing shaft. /l--plunger, M, 1/... lever, n-pushnyrad, W--interlock lever, -movin hole, 1I7B--long hole, #O-circle l1 part, #/... support Arm, ξ...bin 1R-locking board. Patent applicant: Fuji Electric Manufacturing Co., Ltd.

Claims (1)

[Scope of Claims] 1) An opening/closing lever that is biased by a shutoff spring K and rotates an opening/closing shaft that turns on and off the breaker, and is pivotably supported for five rotations and engages with and disengages from the operation handle. The operation plate includes a retaining portion and is connected to a closing spring, and a connecting lever mechanism that connects the operation plate to the opening/closing lever, and the operation handle is engaged with the retaining portion to open the operation plate. By rotating the breaker, energy for closing the breaker is accumulated in the closing spring, and the handle is separated from the retaining portion to release the input energy and close the breaker. The closing operation mechanism is provided with a locking means interlocked with the opening/closing shaft or the opening/closing lever, and the locking means is locked when the operation plate is in a position where input energy is not stored and the opening/closing lever is in the closing position. 1. A shutoff IIO closing operation mechanism, characterized in that the locking section is closed to make it impossible to lock the operation handle to the locking section. 2) In the closing operation mechanism according to claim 1, the locking means is a locking plate attached to the front opening/closing shaft or opening/closing lever, and the locking plate holds the retaining portion of the operating plate. A closing operation mechanism for a circuit breaker, characterized by comprising a locking part that closes. In the closing operation mechanism □ according to claim 1, the locking means is rotatably supported as an interlock lever e! An L+Ir It closing operation characterized in that one end of the 1% mV lever is secured to the opening/closing lever without the opening/closing shaft, and the other end is provided with a locking portion for closing the securing portion of the operation plate. mechanism.