KR20030047208A - structure for attaching auxiliary cover on MCCB - Google Patents

Abstract

PURPOSE: An auxiliary cover connection structure is provided to be capable of easily opening and closing an auxiliary cover using a permanent magnet instead of a screw. CONSTITUTION: Magnets(6) for connection are provided at an opposite part of a hinge connection part(4a) of an auxiliary cover(4) and at an upper surface of a cover(2) of a mold case circuit breaker corresponding to the opposite part, respectively. The hinge connection part(4a) is provided on the cover(2) of the mold case circuit breaker so as to be rotated. The cover(2) and the auxiliary cover(4) are interconnected by an attractive force between the magnets(6) for connection, when the auxiliary cover is closed so as to cover an installation groove.

Description

Structure for attaching auxiliary cover on MCCB}

The present invention relates to a circuit breaker, and in more detail, to change the configuration of the auxiliary cover mounted on the cover of the circuit breaker to enable the operator to easily open and close the auxiliary cover.

In general, a circuit breaker is an electrical device that protects a circuit and a load by automatically cutting off a circuit in the event of an electrical overload or a short circuit.

Such a circuit breaker attaches a contact to the mover to open and close the current, and operates to protect the line and the load by detecting and blocking an over current or a short circuit at the trip part. In addition to the above-described basic functions, such as a trip of a undervoltage or a remote operation. When it is necessary to perform additional functions, it is possible to carry out various functions by incorporating accessories on the cover of the breaker.

Therefore, in order to couple the accessory to the wiring breaker as described above, the auxiliary cover provided on the cover may be opened and used to be mounted on the accessory mounting groove formed on the top of the cover.

Then, with reference to the attached Figures 1 to 3 here briefly look at the configuration of the circuit breaker and the conventional auxiliary cover structure as follows.

In general, the wiring breaker has an enclosure including a case 1 and a cover 2 for protecting various components, and a handle 3 is provided on an upper surface of the cover to allow an operator to artificially turn on / off the breaker. have.

In addition, the left and right portions of the handle (3) is provided with accessory mounting grooves (2a) in accordance with a predetermined standard, respectively, so that the breaker can be fitted with an accessory such as a low voltage trip device or a remote control circuit.

At this time, the auxiliary cover (4) is hinged to the upper surface of the cover (2) to open and close the accessory mounting groove (2a), each screw opposite the hinge coupling portion (4a) of the auxiliary cover As the fastening holes 4b are formed, the auxiliary covers 4 are fastened by screwing the screws 5 to the screw fastening holes 4b of the cover 2 through the screw fastening holes.

Therefore, in order to couple the accessory as described above, the operator must first unscrew the screw 5 fastened to the auxiliary cover 4 using a screwdriver or the like, and then rotate the auxiliary cover 4 in one direction to open the breaker. It is understood that the accessory mounting groove 2a of the opening is opened to the outside.

After that, the operator may perform the operation of mounting or replacing the accessory to the accessory mounting groove (2a) opened to the outside, and after completing the installation or replacement of the accessory as described above the auxiliary cover ( By closing 4) and tightening the screw 5, the accessory mounting groove 2a of the cover 2 is shielded from the outside by the auxiliary cover 4.

However, in order to open and close the conventional auxiliary cover as described above, the operator must first perform a screw tightening operation to lock or loosen the screw every time in preparation for a driver, etc., so that the worker feels very troublesome when working. On the other hand, if the screw is lost during the work was a problem that a lot of work time was wasted.

In addition, in the production step of the auxiliary cover only because the screw and the auxiliary cover to be produced separately, a lot of work labor was wasted, there was a problem that also increases the number of inventory of each part.

The present invention has been made to solve the above problems, and instead of fastening the auxiliary cover with a screw by changing the auxiliary cover configuration of the conventional wiring breaker, it is possible to easily open and close the auxiliary cover using a permanent magnet. It is an object of the present invention to provide an auxiliary cover fastening structure of a circuit breaker.

1 is a perspective view showing a typical wiring breaker

Figure 2 is a partial perspective view showing a conventional secondary cover fixing structure

3 is a side view of the main part of FIG.

Figure 4 is a perspective view showing a circuit breaker to which the present invention is applied

Figure 5 is a partial perspective view showing the auxiliary cover fastening structure according to the present invention

FIG. 6 is a side view of the main part of FIG. 5;

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

2: Cover 2a: Attachment Groove

4: auxiliary cover 4a: hinge coupling portion

6: magnet for fastening

According to the present invention for achieving the above object, in the auxiliary cover of the circuit breaker, one end of which is hinged on the cover to be opened and closed to shield the accessory mounting groove formed in the circuit breaker cover, the hinge coupling of the auxiliary cover The sub-circuit and the upper surface of the cover opposite to each other are provided with a fastening magnet, so that the auxiliary cover shielding the attachment groove of the cover of the cover is fastened to the top of the cover by the attraction between the fastening magnets. An auxiliary cover fastening structure is provided.

Hereinafter, the present invention will be described in more detail with reference to FIGS. 4 to 6.

4 is a perspective view illustrating a circuit breaker to which the present invention is applied, and FIG. 5 is a partial perspective view illustrating a fastening structure of an auxiliary cover according to the present invention, and FIG. 6 is a side view of the main part of FIG. In the same configuration as that of the conventional components among the components, the description thereof will be omitted, and the numbers given in the related art will be given as they are.

Hereinafter, the fastening structure of the auxiliary cover according to the present invention will be described.

By inserting the fastening magnets 6 into the opposite ends of the hinge coupling portions 4a of the auxiliary cover 4 rotatably provided on the cover 2 of the wiring breaker and the upper surface of the cover 2 opposite thereto. When the auxiliary cover is closed with the accessory mounting groove 2a closed, the cover 2 and the auxiliary cover 4 are fastened to each other due to the attractive force of the fastening magnet.

Therefore, when the worker newly attaches the accessory to the circuit breaker or replaces it with another accessory, the auxiliary cover is opened as shown in FIG. 5 by only holding the auxiliary cover 4 and rotating only to the rear.

In this case, as shown in FIG. 5, since the attachment mounting groove 2a of the cover 2 is opened to the outside, the operator may mount the necessary attachment to the attachment mounting groove 2a.

In addition, after the installation and replacement of the accessory is completed, if the operator grabs the auxiliary cover 4 again and closes it in the opposite direction, the fastening magnets 6 installed on the cover 2 and the auxiliary cover 4 are mutually different. Since the secondary cover 4 is fixed to the upper cover 2 due to the attraction of the magnet.

The auxiliary cover fastening structure of the circuit breaker for the present invention not only allows the operator to open and close the auxiliary cover at a time, but also prevents a closed end such as losing the screw during the conventional operation, thereby quickly and easily installing or replacing an accessory device. There is an advantage that can be done.

In addition, the production process of the auxiliary cover is also very effective because it is not necessary to produce a fastening screw separately or to form a screw fastening hole in the auxiliary cover can greatly reduce the number of parts and labor.

Claims (1)

In the auxiliary cover of the circuit breaker for one end hinged on the cover to shield the accessory mounting groove formed in the circuit breaker cover to be opened and closed, On the opposite end of the hinge coupling portion of the auxiliary cover and the upper surface of the cover opposite to each other, a fastening magnet is provided so that an auxiliary cover shielding the mounting device mounting groove of the cover is fastened on the cover by the attraction force between the fastening magnets. Auxiliary cover fastening structure of the circuit breaker characterized by the above-mentioned.