KR100377423B1 - Operation handle of circuit breaker - Google Patents

Abstract

The present invention provides an operation handle device of a circuit breaker that allows the lock position of the handle to be freely selected and used by the user.

An operation handle device 2 for opening / closing a circuit breaker 1 installed in a switchboard by manual operation from the outside of the switchboard, the cylindrical fence protruding from the main body the outer circumference of the rotary handle 4 built in the main body 3 ( In the apparatus enclosed by 3a), the ON lock hole 8 and OFF which have the cover 10 which can be perforated in two circumferential surfaces of the said fence corresponding to the on-off operation position of a handle The lock lock hole 9 is provided, and when the circuit breaker is used, the cover of one of the lock holes for warm or off is removed according to the user's request, and the hole is passed through the lock latch 7a. The handle is locked to an on operation position or an off operation position to prevent an unexpected operation error of the handle.

Description

Operation handle device of circuit breaker

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an operation handle device for turning on / off a circuit breaker provided in a switchboard, an operation panel, or the like by manual operation from outside the switchboard or the operation panel.

In the operation handle device of the circuit breaker which is connected to the load feeder circuit in the position, the operation state of the circuit breaker is in the off state if a worker accidentally switches the handle from the off position to the on position while a worker enters the switchboard and performs maintenance and inspection. The circuit breaker in the circuit breaker is turned on and the wiring circuit in the switchboard becomes live, which is very dangerous.

On the other hand, if the handle is switched off by mistake during power feeding to the load, the breaker may interrupt the power feeding and the feeding to the load may be interrupted, causing unpredictable damage.

Therefore, in order to prevent such a mistake of operation of the handle, it has conventionally been provided to provide locking means for correcting the handle of the handle device operated outside the switchboard to the on position or the off position. Examples of such locking means include a mechanism in which a steering mechanism is built in the handle mechanism in advance, or a method of locking and locking a lock if necessary.

By the way, in the conventional operation handle apparatus, in order to set and change the locking position of a handle, it is necessary to disassemble the handle apparatus and to perform reassembly. On the other hand, whether the handle is corrected at the on position or at the off position is selected by the user according to the situation of the breaker delivery destination.

Therefore, conventionally, two types of products are prepared by the circuit breaker manufacturer, for example, correcting the handle at the on-operation position and correcting at the off-operation position. The reality is that the product of the handle device is delivered to the breaker body in combination, or the handle setting position is changed at the time of shipment to deliver the breaker.

However, the provision of two types of handle devices by the manufacturer side complicates the parts management, and therefore, measures are required in the field to freely select the lock position of the operation handle device from the user side after shipment from the factory.

SUMMARY OF THE INVENTION The present invention has been made in view of the above point, and an object thereof is to provide an operation handle device of a circuit breaker that allows the user to freely select and use the lock position of the handle according to the above requirements.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram of the operation handle apparatus corresponding to Embodiment 1 of this invention, FIG. 1A is a partially cutaway top view which shows the state which locked the handle to the on operation position, and FIG. 1B is the same side view.

FIG. 2 is a plan view of a state in which the handle is locked to the off operation position as the embodiment of FIG. 1; FIG.

Fig. 3 is an external perspective view showing a state in which an operation handle device corresponding to Embodiment 2 of the present invention is locked at an on operation position.

FIG. 4 is an explanatory view showing the main part structure part of FIG. 2 in cross section, FIG. 4A is a plan view, and FIG. 4B is a side view.

<Explanation of symbols for the main parts of the drawings>

1: circuit breaker

2: operation handle device

3: body

3a: fence

4: handle

6: switchboard panel

7: lock

10: cover

10a: tie-bar

In order to achieve the above object, in the present invention, in the operation handle device in which the outer circumference of the rotary handle built into the main body is surrounded by a cylindrical fence protruding from the main body, the configuration is as follows.

1) on of the handle. Corresponding to the off operation position, two fence peripheral surfaces are provided with a perforated lid lock hole for locking the handle at the position.

2) In addition to the configuration of 1) above, the inner circumferential side of the fence portion of the main body includes a handle and an integral circumferential wall portion, and one position on the circumference of the circumferential wall portion is locked on the fence side at the on and off operation positions of the handle. Install the grooves associated with the latches of the locks in positions overlapping the holes.

3) In the above 1) and 2), the cover provided in the lock hole of the main body side fence is integrally connected with the fence through a tie-bar formed around the fence.

In the above configuration, at the site where the circuit breaker is used, a cover which selects one of the on-hole lock holes or the off-lock lock holes provided on the fence periphery of the main body and blocks the lock holes is used for a simple tool such as a driver or a punch. When the hole is drilled and the lock is pushed through the lock hole to correct the handle, the handle is locked at the locked position and the switch operation cannot be performed at another position. For example, if the lock operation is selected and the lock hole is locked, the handle cannot be switched to the off position. On the contrary, if the lock is selected and the lock is selected by the off operation position, the handle cannot be switched to the on position. In this case, since the lock hole on the non-selection side is closed by a cover, there is no fear of incorrectly knowing the position of the lock hole when the lock is applied, and it is possible to prevent a correction miss.

EMBODIMENT OF THE INVENTION Hereinafter, the Example of this invention is described based on drawing.

<Example 1>

1A, 1B, and 2, 1 is a circuit breaker, 2 is an operation handle device provided on the front of the circuit breaker main body, and the operation handle device 2 is attached to the main body (a housing made of a resin molded article) 3. When the rotary steering wheel 4 is built-in and the front end of the steering wheel 4 is turned by manual operation according to the on / off mark displayed on the main body side, the driving arm 5 connected to the steering wheel 4 is arrowed. Direction, the operation knob 1a of the circuit breaker 1 is switched on or off. Moreover, the handle 4 is rotatable only in the range of 90 degrees in the direction of the arrow between the on operation position indicated by the solid line and the off operation position indicated by the dotted line, and is otherwise prevented from moving. In addition, the main body 3 is formed with a cylindrical fence 3a that projects forward and surrounds the outer circumference of the handle 4. When the circuit breaker is installed in the switchboard or the like, the handle 4 and the fence 3a of the main body 3 are mounted on the switchboard panel 6 so as to protrude in front of the switchboard.

Further, in the above configuration, the U-shaped clasp 72 of the lock 7 is disposed on the periphery of the fence 3a of the main body 3 in which the handle 4 is incorporated, in the on-operation position and the off-operation position of the handle 4. The on-hole lock hole 8 and the off-lock lock hole 9 for opening and correcting the opening are opened, and the lid 10 is integrally formed so as to close the holes in each of the lock holes 8 and 9 when the product is shipped. It is molded and installed. The cover 10 is molded at the same time when the main body 3, which is a resin molded product, is formed. The upper and lower sides of the lid 10 are narrow tie-bars (connection pieces) 10a. It is connected to the wall surface, and if necessary, a hole can be easily cut by cutting the tie-bar 10a with a tool such as a screwdriver or a punch and removing the cover 10.

And when the user locks a circuit breaker, ie, the handle 4 in an on-operation position in the actual use state which installed the circuit breaker 1 in a switchboard etc., perforate the cover 10 which blocks the locking hole 8 for warming up. Then, the lock 7 is fixed as shown in FIG. Thereby, the latch 7a of the lock 7 which protrudes inward of the fence 3a inhibits the movement of the handle 4, and locks it in the on operation position, and prevents switching operation to an off position. In addition, when locking the lock 7, the lock hole 9 for off-use on the unused side is blocked by the lid 10, so there is no possibility of accidentally mislocking the lock.

On the other hand, in the case of locking the breaker in the off position, as shown in FIG. 2, after the cover 10 of the off-locking hole 9 is removed and drilled, the lock 7 is attached thereto. Hang.

<Example 2>

3, 4A, and 4B show an application embodiment in which Embodiment 1 is further developed. In this embodiment, a peripheral wall portion 4a is formed integrally with the handle 4, and the peripheral wall portion 4a is formed. ) Is fitted inside the main body 3 to face the fence 3a. The lock groove 4b is slotted at one position on the circumference of the circumferential wall portion 4a at a position perpendicular to the handle 4. On the circumferential surface of the fence 3a facing the lock groove 4b, an on lock hole 8 and an off lock hole 9 provided with a perforated lid 10 as in Example 1 are opened. have. In this case, unlike the first embodiment, the locking holes 8 and 9 have the locking holes 8 for turning on at the position of the off mark indicated on the main body 3, and the locking holes for turning off at the position opposite to the on mark. The hole 9 is positioned. By arranging the lock holes 8 and 9 and the lock groove 4b, the handle 4 is operated to align the tip thereof with the position of the on mark, so that the lock groove 4b and the lock hole 8 for warming up are When the handle 4 is switched to the off operation position, the lock groove 4b and the lock hole 9 for off coincide with each other.

When the circuit breaker 1 is locked at the on position, the cover 10 of the on-lock lock hole 8 is removed and drilled, as in the first embodiment, and then the lock is operated at the on operation position of the handle 4. The latch 7a of the lock 7 is latched and corrected as shown over the hole 8 and the lock groove 4b. As a result, the handle 4 is locked to the on operation position. On the other hand, in the case of locking in the off position, the cover 10 of the off-locking hole 9 is removed to make a hole, and then the handle 4 is switched to the off-operation position after the hole is removed. (9) and lock groove (4b) hang and lock and correct. As a result, the handle 4 is locked at the off operation position and cannot be switched to the on position unless the lock 7 is removed.

As described above, according to the configuration of the present invention, the user side can freely select and respond whether the lock position of the operation handle device is the ON operation position or the OFF operation position at the product delivery destination of the circuit breaker.

In addition, the manufacturer of the circuit breaker eliminates troublesome work, such as preparing two types of products for the operation handle device, one for on-correction and one for off-correction, or reassembling the setting of the correction position before shipment of the product according to the user's request. This also simplifies parts management.

In addition, by locking the locking holes for opening and closing on the fence of the main body with a perforated cover for the products shipped from the factory, the lock holes on the unused side are closed when the lock is locked at the time of actual use at the place of use. As it is kept blocked, it is possible to obtain an advantage in terms of handling such that there is no risk of mislocking the lock.

Claims (3)

An operation handle device for manually opening and closing a circuit breaker installed in a distribution board or the like outside the switchboard, wherein the operation handle device surrounds an outer circumference of a rotary handle built into the main body with a cylindrical fence protruding from the main body. And a lock hole with a perforated lid for locking the handle to the position by locking the two circumferential surfaces of the fence in correspondence with the operation position. The method of claim 1, A circumferential wall portion integral with the handle on the inner circumferential side of the fence portion of the main body, and on one circumference of the circumferential wall portion, a lock associated with the latch of the lock at a position overlapping with the lock hole on the fence side at the on and off operation positions of the handle; An operation handle device of a circuit breaker, wherein a groove is provided. The method according to claim 1 or 2, A cover provided in the lock hole of the main body side fence is integrally connected to the fence through a tie bar formed around the main circuit fence.