KR100621116B1 - Handle lock device for wiring breakers - 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 fix a handle in on, off, and trip positions of the circuit breaker.

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 comprising a cover coupled to an upper portion of the enclosure, the handle lock device comprising: a locking hole provided in the cover corresponding to at least one of an on position, an off position, and a trip position of the handle; It is inserted into the locking hole of the cover to lock the handle in any one of an on position, an off position, and a trip position, and move away from the locking hole of the cover to a position that allows displacement of the handle. And a manipulation member for locking the lock member and the lock member in the locking position or moving the lock member to a position allowing displacement of the handle.

Enclosure, Handle, Cover, Body, Handle, Guide Groove, Insert, Lock

Description

HANDLE LOCK DEVICE OF CIRCUIT BREAKER}

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

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

3 is an exploded perspective view of a handle and lock member and an operating member according to the present invention;

4A to 4C are state diagrams respectively illustrating a process of inserting an operation member into a handle according to the present invention and moving the lock member to the locked position to fasten the lock to the operation member;

5 is a cross-sectional view showing the on lock hole, the trip lock hole and the off lock hole of the cover corresponding to the on, off and trip positions of the handle according to the present invention, respectively;

6A to 6C are perspective views illustrating operating states of on, off and trip positions of the circuit breaker to which the handle lock device according to the present invention is applied.

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

10; Enclosure 30; handle

31; Body portion 33; Handle

33a; Insertion hole 35; Guide home

37; Lock member 37a; Body

37b; Coupler 39; Operation member

39a; Body portion 39b; Lock hole

39c; Leg 41; lock

43; First arrow 45; Second arrow

47; On lock hole 49; Off lock hole

51; Trip lock hole 50; cover

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 fix the handle in an on, off, and trip state of the circuit breaker.

In general, a circuit breaker is an electrical device that switches an electric line to an open or closed state by a handle operation, and protects a load device and a line by breaking a circuit when an overload or short circuit accident occurs in the line.

In addition, the term "trip" refers to an operation of detecting an abnormal current in the circuit breaker itself to cut off the power, rather than artificially opening and closing the circuit breaker when an abnormal current occurs in the circuit 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 circuit breaker 1 includes an enclosure 3 for accommodating internal devices such as an opening and closing mechanism, a trip mechanism, a main cover 5 coupled to an upper portion of the enclosure 3, And an auxiliary cover 7 coupled to the top of the main cover 5 so as to be openable and closed, and a handle 9 assembled inside the enclosure 3 and operating the circuit breaker.

At this time, the lower portion of the main cover (5) is provided with a space portion on both sides to accommodate various accessories, such as alarm switch, auxiliary switch, trip device, etc. By this, the user is connected to the circuit breaker In order to install the auxiliary cover 7 by rotating in one direction from the main cover (5) to open, and then optionally used in conjunction with the accessory device in the lower space of the main cover (5).

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.

The circuit breaker 1 can be manually operated in the ON, OFF, and TRIP positions by the handle 9 coupled to the opening / closing mechanism inside the enclosure 3. .

However, the circuit breaker 1 of the prior art having the above structure is not equipped with a device for fixing (locking) the position of the handle 9 at a predetermined position. Therefore, if you want to limit the operation of the handle (9) has to be attached to a separate equipment is cumbersome because it takes a lot of volume to the outside of the circuit breaker has a problem of poor appearance and expensive.

Accordingly, it is an object of the present invention to provide a handle lock device for a circuit breaker that prevents waste of costs because no separate equipment is required when fixing the position of the handle at the on, off and trip positions of the circuit breaker and limiting use thereof. will be.

Another object of the invention is to did not protrude into the handle lock device are provided outside the steering wheel lock apparatus of the appearance is beautiful MCCB.

An object of the present invention is an enclosure for accommodating 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. A handle lock device for a circuit breaker having a cover coupled to the handle, comprising: a locking hole provided in the cover corresponding to at least one of an on position, an off position, and a trip position of the handle; It is inserted into the locking hole of the cover to lock the handle in any one of an on position, an off position, and a trip position, and move away from the locking hole of the cover to a position that allows displacement 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.

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. .

Figure 2 shows a perspective view of the handle lock device of the circuit breaker according to the present invention and a detailed view thereof, Figure 3 shows an exploded perspective view of the handle and lock member and the operation member according to the present invention.

As shown in Figures 2 and 3, the handle lock device of the circuit breaker includes an enclosure (10) for accommodating an internal device including an opening and closing mechanism; A handle 30 coupled to the opening and closing mechanism of the enclosure 10; The cover 50 is coupled to the upper portion of the enclosure 10.

In addition, the handle 30 is formed in the body portion 31, the handle portion 33 protruding upward from the body portion 31, the body portion 31 and the handle portion 33 is formed in the lock member And a guide groove 35 for guiding the movement of the 37. The guide groove 35 is formed in the lower portion of the handle portion 33 corresponding to the groove portion, and is formed in the lower portion of the body portion 31 concave downwardly in the width direction of the body portion 31 in the longitudinal direction of the body portion 31. Concave grooves are formed.

Referring to FIG. 3 again, the lock member 37 is inserted into the locking hole of the cover 50 (47, 49, 51 of FIG. 5) so that the handle 30 is in one of an on position, an off position, and a trip position. A member which is movable to a position that locks (locks) at and a position which permits a displacement operation of the handle 30 away from the locking hole (47, 49, 51 of FIG. 5) of the cover 50, 37a and a pair of coupling holes 37b formed on the body portion 37a to engage the operation member 39. The locking holes 47, 49 and 51 in Fig. 5 are constituted by holes or grooves.

The operation member 39 is engaged with the lock member 37 and inserts the lock member 37 into any one of the locking holes 47, 49, and 51 of the cover 50 so that the handle 30 is turned on and off. And a member for moving to the locked position at any one of the trip position and the trip position, or to a position allowing displacement of the handle, the body portion 39a and the lock hole 39b formed at the upper end of the body portion 39a. And a pair of legs 39c formed at the lower end of the body portion 39a and inserted into the coupling hole 37b of the lock member 37.

Figures 4a to 4c is a state diagram showing a process of a state in which the operation member is inserted into the handle according to the present invention, the state of moving the lock member to the lock position, the state of restricting the operation of the handle by fastening the lock to the operation member Illustrated.

Referring to these drawings in detail, FIG. 4A shows a handle state in a normal operation, that is, a state in which the handle 30 can be freely operated by releasing the lock of the handle 30, and FIG. 4B shows the first arrow direction 43. ), The lock member 37 is displaced upward as indicated by the second arrow 45 by the operation member 39, and FIG. 4C shows the lock hole 39b. Restrain the lock 41 to prevent the lock member 37 from being inserted into the handle 30 again, i.e., to free the restraint of the handle 30, and to protrude the lock member 37, i.e. 4A to 4C, both ends of the lock member 37 extending beyond the width of the handle 33 are inserted into the locking holes (47, 49, 51 of FIG. 5) of the cover 50 to restrain the handle 30. Indicates the state.

5 shows an on-locking hole, an off-locking hole formed in the lower portion of the cover 50 along the path of movement of both ends of the lock member 37 corresponding to the on, off and trip positions of the handle according to the present invention, respectively. The cover 50 is shown in cross section so that the trip lock holes 47, 49, 51 appear. In the embodiment, since the two ends of the locking member 37 corresponding to both ends of the locking member 37 are inserted, the on lock hole, the off lock hole, and the trip lock holes 47, 49, and 51 are preferably respectively. Three pairs are provided on the cover 50, one on each side of the handle 30.

6A to 6C are perspective views illustrating operating states of on, off and trip positions of the circuit breaker to which the handle lock device according to the present invention is applied.

Here, FIG. 6A shows a circuit breaker in the locked state of the handle in the on state, FIG. 6B shows a circuit breaker in the locked state of the handle in the off state, and FIG. 6C shows a circuit breaker in the locked position of the handle in the tripped state. Indicates.

The operation of the handle lock device of the circuit breaker according to the present invention will be described with reference to FIGS. 2 to 6C.

First, the lock member 37 is inserted into the guide groove 35 of the handle 30.

The lock member 37 and the operation member are then inserted by inserting the operation member 39 into the insertion opening 33a of the handle portion 33 to insert the leg portion 39c into the engaging groove 37b of the lock member 37. (39) is assembled to be combined. When the handle assembly in the assembled state is coupled to the opening and closing mechanism (not shown) of the circuit breaker, the assembly of the handle lock device of the circuit breaker according to the present invention is completed.

The operation is described as follows.

As shown in FIG. 4, when the user pulls the top of the operation member 39 in each operation position (on position, off position, trip position) of the handle 30, the lock member 37 is covered by the cover 50. Is inserted into the lock holes 47, 49, and 51 of the lock hole. At this time, the lock member 41 is inserted into the lock hole 39b of the lock part 39 which has come out of the handle 30 to lock the operation member. 39 cannot be inserted into the handle 30, and the handle 30 cannot be operated at the current position of the handle 30 due to the interference between the cover 50 and the lock member 37, thereby preventing the operation of the circuit breaker. May be limited.

Therefore, the operation of the handle 30 can be limited to arbitrarily shield the power supply. On the other hand, when the operating member 39 is fully pushed into the handle 33 as shown in FIG. 4A, the lock member 37 is any one of the locking holes 47, 49, and 51 of the cover 50. The handle 30 can be freely operated by releasing the handle 30 and releasing the handle 30.

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 doesn't happen.

 The handle lock device of the circuit breaker according to the present invention as described above is fixed in the on, off and trip positions of the circuit breaker to limit the operation of the handle does not require additional equipment to prevent waste of the cost, the handle Since the lock device does not protrude to the outside, the appearance is beautiful.

Claims (4)

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 A locking hole provided in the cover to correspond to at least one of an on position, an off position, and a trip position of the handle;   It is inserted into the locking hole of the cover, and has a body portion and a pair of coupling holes formed in the body portion for engaging the operation member, the handle is any one of the on position, off position and trip position A lock member movable in a position to lock at and a position away from the locking hole of the cover to allow a displacement operation of the handle; And A pair of locks coupled to the lock member, formed at an upper end of the body to lock the position of the lock member, and formed at a lower end of the body and inserted into a coupling hole of the lock member; And a manipulation member for fixing the lock member at the locking position or moving the lock member to a position allowing displacement of the handle.      The handle of claim 1, wherein the handle includes a body portion, a handle portion protruding upward from the body portion, and a guide groove formed on the body portion and the handle portion to guide movement of the lock member. The handle lock device of the circuit breaker characterized by the above-mentioned. delete delete

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