KR100633758B1 - A handle-lock device for a circuit breaker - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handle lock device for a circuit breaker, and more particularly, to a handle lock device for a circuit breaker that enables a user to easily restrict the displacement operation from an off position or a trip position to an on position of the wiring breaker handle.

The handle lock device for a circuit breaker according to the present invention includes an enclosure for accommodating an internal device including an opening / closing mechanism of a circuit breaker, a handle for manually operating the opening / closing mechanism in an on, off or trip position in combination with the opening / closing mechanism. A handle lock device for a circuit breaker including a cover coupled to an upper portion of the enclosure, the handle lock device comprising: a handle guide part attached to the cover and provided with a guide opening for guiding movement of the handle; A locking groove provided in the handle guide part on a path moving from the off position or the trip position to the on position of the handle; A position inserted into the locking groove of the handle guide part to prevent the operation of moving the handle from the off position or the trip position to the on position, and a position away from the locking groove of the handle guide part to the on position from the off position or the trip position of the handle And a lockable member that is rotatable to a position that allows displacement of the furnace.

Enclosure, Cover, Handle, Lock Member, Locking Groove

Description

Handle lock device for circuit breaker {A HANDLE-LOCK DEVICE FOR A CIRCUIT BREAKER}

1 shows a perspective view of a circuit breaker according to the prior art;

2 shows a perspective view and a partially enlarged view of a handle lock device of a circuit breaker according to the present invention;

3 shows a perspective view of the lock member according to the invention;

4 shows a perspective view before the locking member is mounted on the cover of the present invention;

5a to 5d show an operational state diagram of the lock member according to the present invention;

Figure 6a and Figure 6b is a perspective view for each operation state of the wiring breaker provided with a handle lock device according to the present invention, Figure 6a is an operating state perspective view showing a state in which the handle is moved to the on position in the unlocked state of the lock member 6B is an operating state perspective view showing a state where the handle is located in the trip position in the state in which the lock member is unlocked;

7 is a perspective view showing an operating state of the circuit breaker with a handle lock device according to the present invention, in which the lock member is positioned in the lock position and the lock is fastened to the lock engagement portion of the lock member.

* Description of the symbols for the main parts of the drawings *

10; Enclosure 30; handle

50; Cover 60; Steering wheel guide

61; Hinge support 63; Lock groove

70; Lock member 71; Body

73; Lock hole 75; Hinge

77; Rock Dob 79; Handle

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handle lock device for a circuit breaker, and more particularly, to a handle lock device for a circuit breaker that allows a user to easily restrict operations from an off position or a trip position to an on position of a handle.

In general, a circuit breaker can switch an electric line, that is, an open or closed state, by a handle operation, and automatically cuts off a circuit without a handle operation when an overload or short circuit occurs. An electrical device that can protect circuits.

In addition, the term "trip" refers to breaking a circuit by detecting an abnormal current in the breaker itself rather than artificially opening the breaker by a handle operation when an abnormal current occurs in the breaker.

Hereinafter, a circuit breaker according to the related art will be described with reference to the accompanying drawings.

1 shows a perspective view of a circuit breaker according to the prior art.

As shown in FIG. 1, the wiring breaker 1 includes an enclosure 3 for receiving an internal device including an opening and closing mechanism, a main cover 5 coupled to an upper portion of the enclosure 3, and the main An auxiliary cover 7 coupled to the top of the cover 5 so as to be openable and closed, and a handle 9 coupled to the opening and closing mechanism for manually displacing the wiring breaker. The opening and closing mechanism is, as is well known, a movable contactor and a fixed contactor, a shaft for supporting the movable contactor, a charging spring for driving the movable contactor, a link, a latch, a latch holder, and a trip bar ( trip bar).

At this time, inside the enclosure 3 located below the upper and lower portions of the main cover 5, each space is formed to accommodate various accessories such as an alarm switch, an auxiliary switch, a trip device, and the like. Therefore, when the user wishes to mount the accessory device on the circuit breaker, the auxiliary cover 7 is rotated in one direction from the main cover 5 to be opened, and then selectively placed in the space part of the main cover 5. Use a combination of accessories.

Here, the auxiliary cover 7 can be opened and closed when necessary as one end is rotatably hinged on the main cover 5, and the other end of the auxiliary cover 7 is a fastening screw (not shown). This structure is designed to be mounted on the main cover 5 of the circuit breaker.

In addition, at the left and right sides of the main cover 5, wire outlets (not shown) are formed so that wires (not shown) connected to the accessory device can be drawn out of the breaker.

However, the circuit breaker 1 of the prior art having the above configuration is not provided with a device capable of restricting the operation of the handle 9 from the trip position or the off position to the on position. Therefore, when it is desired to limit the operation of the handle 9 from the trip position or the off position to the on position, there is a problem that it is cumbersome and costly because additional equipment must be attached.

Accordingly, it is an object of the present invention to provide a handle lock device for a circuit breaker which can limit the operation of the wiring breaker handle from the trip position or the off position to the on position.

Another object of the present invention is to provide a handle lock device that can limit the operation of the circuit breaker handle in the trip position or the off position to the on position in the cover to reduce the purchase cost of the user's handle lock device by eliminating additional equipment It is to provide a handle lock device of the circuit breaker.

An object of the present invention is an enclosure for housing an internal device including an opening and closing mechanism of a wiring breaker, a handle for manually operating the opening and closing mechanism in an on, off or trip position in combination with the opening and closing mechanism, and an upper portion of the enclosure. In the handle lock device of the circuit breaker comprising a cover to be coupled,

A handle guide part attached to the cover and provided with a guide opening for guiding movement of the handle;

A locking groove provided in the handle guide part on a path moving from the off position or the trip position to the on position of the handle;

A position inserted into the locking groove of the handle guide part to prevent the operation of moving the handle from the off position or the trip position to the on position, and a position away from the locking groove of the handle guide part to the on position at the off position or the trip position of the handle It can be achieved by providing a handle lock device for a circuit breaker according to the invention, characterized in that it comprises a lock member that is rotatable to a position that allows displacement of the furnace.

Hereinafter, the most preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the technical idea of the present invention. .

2 is a perspective view and a partially enlarged view of a handle lock device of a circuit breaker according to the present invention, Figure 3 is a perspective view of the lock member according to the present invention, Figure 4 is a perspective view before the lock member is mounted to the cover of the present invention; 5A to 5D are operational state diagrams of the lock member according to the present invention.

The enclosure, cover, and handle are well known in the art and will not be described in detail below.

As shown in Figures 2, 3 and 4, the handle lock device of the circuit breaker according to the present invention is coupled to the enclosure (2) for accommodating the internal device, including the opening and closing mechanism of the wiring breaker, and the opening and closing mechanism In the handle lock device of the wiring breaker comprising a handle 30 for manually operating the opening and closing mechanism in the on, off or trip position, and a cover 50 coupled to the upper portion of the enclosure 10, the cover 50 A handle guide portion 60 attached to the handle and provided with a guide opening (not designated) for guiding the movement of the handle 30; A locking groove 63 provided in the handle guide part 60 on a path moving from the off position or the trip position to the on position of the handle 30; A position inserted into the lock groove 63 of the handle guide 60 to prevent movement of the handle 30 from the off position or the trip position to the on position, and the lock groove 63 of the handle guide 60. And a lock member 70 rotatable from the off position of the handle 30 or the position allowing the displacement operation from the trip position to the on position.

Further, the handle guide portion 60 includes a pair of hinge supports 61 formed on both inner walls at positions corresponding to one end position (one end position adjacent to the on position of the handle) of the guide opening, and And a pair of locking grooves 63 formed on both inner walls at positions close to the trip position of the handle of the guide opening.

In addition, the lock member 70 includes a body portion 71; Hinge protrusions 75 protruding from both sides of one end of the body portion 71; A lock fastening portion 73 extending from one end of the body portion 71 and having a lock hole 73a through which the lock can be fastened; It is formed to protrude horizontally from the side of the body portion 71, and includes a lock protrusion 77 which is movable to the position inserted or detached into the locking groove 63 of the handle guide portion 60. The lock member 70 further includes a handle portion 79 protruding upward from the upper surface of the body portion 71.

Here, when the handle portion 79 does not restrict the on operation of the handle, the user easily pulls the lock member 70 to lock the protrusion 77 from the lock groove 63 of the handle guide 60. It can be used to release the lock of the handle 30 by disengaging.

The lock member 70 is made of an elastic material, wherein the elastic material is preferably any one of polyamide 6, polyamide 66, polyamide 46, and polycarbonate.

Since the lock member 70 is made of the elastic material, the user can easily insert the hinge protrusion 75 of the lock member 70 into the hinge support 61 of the handle guide 60 so that the lock member ( 70 may be assembled to be rotatably supported by the handle guide 60.

5a to 5d show an operational state diagram of the lock member according to the invention,

Figure 6a and Figure 6b is a perspective view for each operation state of the wiring breaker provided with a handle lock device according to the present invention, Figure 6a is an operating state perspective view showing a state in which the handle is moved to the on position in the unlocked state of the lock member 6B is an operating state perspective view illustrating a state in which a handle is positioned at a trip position in a state in which the lock member is unlocked;

7 is a perspective view showing an operating state of the circuit breaker with a handle lock device according to the present invention, in which the lock member is positioned in the lock position and the lock is fastened to the lock engagement portion of the lock member.

Referring to the assembly and operation of the handle lock device of the circuit breaker according to the present invention with reference to the drawings as follows.

First, the hinge protrusion 75 of the lock member 70 is inserted into the hinge support 61 of the handle guide 60 so that the lock member 70 is rotatably supported by the handle guide 60. . At this time, since the lock member 70 is made of an elastic material, one of the hinge protrusions 75 of the lock member 70 is inserted into one of the hinge supports 61 of the handle guide 60 and then the lock member 70. ), It is possible to bend slightly to insert the other hinge protrusion 75 into the other side of the hinge support 61 of the handle guide 60.

Next, when the handle 30 is to be fixed at the trip position or the off position to limit the operation to the on position, the lock member 70 is clocked by pressing the handle 79 or a portion thereof close to the lock member 70. The lock protrusion 77 is inserted into the locking groove 63 of the handle guide 60 by rotating in the direction.

Thus, in the locked state of the handle 30 in which the lock protrusion 77 of the lock member 70 is inserted into the locking groove 63 of the handle guide 60, the movement of the handle 30 to the on position is locked. Since the member 70 is caught and stopped, the displacement operation of the handle 30 from the trip position or the off position to the on position can be restricted.

In addition, in this state, when the lock 90 is fastened to the lock hole 73 of the lock member 70, an unauthorized person grabs the handle 79 and rotates the lock member 70 to lock the handle 30. Even when the lock is to be released, the lock 90 is caught by the cover 50, thereby preventing rotation of the lock member 70, thereby preventing unauthorized lock release operation of the lock member 70, thereby making the handle of the circuit breaker more reliable. Locking can be guaranteed.

The present invention described above can be variously substituted, modified, and changed within the scope without departing from the spirit of the present invention for those of ordinary skill in the art to which the present invention pertains, and thus the present invention is limited to the above-described embodiments and the accompanying drawings. It is not possible.

In the handle lock device of the circuit breaker according to the present invention as described above, the operation of displacement of the handle of the circuit breaker from the trip position or the off position to the allowed on position is restricted depending on the position of the lock member assembled to the cover. Therefore, it is possible to more easily limit the on operation of the handle of the wiring breaker, there is an effect that can reduce the inconvenience and cost of purchasing a separate equipment for the on operation restriction of the wiring breaker.

Claims (5)

An enclosure for storing the internal device including the opening and closing mechanism of the wiring breaker, a handle coupled to the opening and closing mechanism for manual operation of the opening and closing mechanism in an on, off or trip position, and a cover coupled to the upper portion of the enclosure. In the handle lock device of the circuit breaker for wiring, A handle guide (60) attached to the cover and provided with a guide opening for guiding movement of the handle; A locking groove 63 provided in the handle guide part on a path moving from the off position or the trip position to the on position of the handle; And A body portion 71; Hinge protrusions 75 protruding from both sides of one end of the body portion; A lock fastening portion 73 extending from one end of the body portion and having a lock hole through which the lock can be fastened; The handle lock of the circuit breaker, characterized in that it comprises a lock member 70 formed to protrude horizontally from the side of the body portion, consisting of a lock protrusion (77) which is movable to a position that is inserted into or away from the locking groove of the handle guide portion. Device. delete 2. The handle lock device of a circuit breaker according to claim 1, wherein said lock member further comprises a handle portion (79) protruding upward from an upper surface of said body portion. The method according to claim 1 or 3, And the lock member is made of an elastic material. The method of claim 4, wherein And said elastic material is any one of polyamide 6, polyamide 66, polyamide 46 and polycarbonate.

Images