KR200224095Y1 - Arc chute mounting structure for electric circuit breaker - Google Patents

Abstract

In mounting, the right leg 18 of the arc chute 14 rests on the seating portion 40 of the first holder 26 in a protruding position. When the arc chute 14 is turned counterclockwise, the first holder 26 overcomes the elastic force of the first spring 30 and moves to the stowed position. As the left leg portion 18 of the arc chute 14 contacts the second holder 34, the second holder 34 is moved to the stowed position. Then, when the left leg portion 18 of the arc chute 14 is housed in the depression 22, the first holder 26 and the second holder 34 have a first spring 30 and a second spring ( By pressing force of 36).

Description

Arc chute detachable structure for electric car breaker

The present invention relates to an arc chute for an electric circuit breaker, and in particular, by allowing the arc chute to be detached or mounted in a simple and easy manner, it minimizes the space required for the detachment of the arc chute and makes the appearance of the breaker box small. A structure for mounting / dismounting arc chute for contactor of electric rail car enables the achievement of light weight.

Typically, a breaker is used in an electric vehicle, and the breaker protects the rear end equipment by serving as a trigger to cut off power supplied to the electric vehicle when an overload is applied. In the process of moving from energized state to disconnected state, if the arc generation is prolonged, the parts are damaged. To prevent this, the arc chute is used, and the arc chute serves to quickly arc the arc. The arc chute is mounted to or detached from the breaker base by using bolted fastening or latching mechanisms.

However, in the arc chute detachable structure according to the prior art as described above, a separate tool such as a wrench or a lever is required, and workability is reduced and minimal space is required for the detachment and detachment, so that the size of the box containing the breaker is increased. As a result there was a problem that the weight is increased.

The present invention was devised to solve the problems inherent in the detachable structure of the arc chute according to the prior art as described above, the object of the present invention is to work by making it possible to detach or install the arc chute in a simple and easy manner The present invention provides an arc chute detachable structure for an electric car breaker that improves the performance, minimizes the space required for the detachment of the arc chute, enables the appearance of the breaker box to be smaller, and achieves lighter weight.

1 is a view showing a state where one leg portion of an arc chute is seated on a first holder;

2 is a view showing a state in which the first holder is moved to the storage position in accordance with the swing of the arc chute.

3 is a view showing a state in which the second holder is moved to the storage position in accordance with the swing of the arc chute.

4 is a view showing a state in which the mounting of the arc chute is completed and the first holder and the second holder are in the mounting position;

Explanation of symbols on the main parts of the drawings

10: arc chute mounting structure 12: breaker base

14: arc suit 16: body

18: leg 20: recess

22: depression 24: storage portion

26: first holder 28: first groove

30: first spring 32: second groove

34: 2nd holder 36: 2nd spring

38: conical portion 40: seating portion

42: center hole

According to an aspect of the present invention, there is provided an arc chute detachable structure for an electric vehicle circuit breaker, the structure comprising: a circuit breaker base is formed receiving portion; At least one first holder adapted to be detached from and mounted to the breaker base by being fitted to the housing in a movable manner between the protruding position and the receiving position and the mounting position; And a first spring for pressing the first holder toward the protruding position or the mounting position.

According to another aspect of the present invention, the first holder has a shape of 'b' rotated 90 degrees counterclockwise, and is integrally fixed to the body portion of the arc chute on the horizontal wall portion of the first holder. The leg can be seated.

According to another aspect of the present invention, a first groove communicating with the accommodation portion is formed in the breaker base, and the first spring is accommodated in the first groove.

According to another aspect of the present invention, the structure is fitted into a second groove formed in the breaker base to be movable between the protruding position and the receiving position and the mounting position, thereby detaching and mounting the arc chute to the breaker base. At least one second holder; And a second spring for pressing the second holder toward the protruding position or the mounting position.

According to another aspect of the present invention, one end of the second holder protruding from the protruding position takes a conical cross-sectional shape.

According to another aspect of the present invention, a recess is formed in the breaker base, and the second groove is formed in an upright wall surface of the breaker base for providing the recess, and the recess may receive the body portion of the arc chute. Can be; One or more recesses are formed on the bottom surface of the recess, and the recesses can accommodate leg portions integrally fixed to the body portion of the arc chute.

According to the above characteristics of the present invention, the arc chute is detached from the breaker base or the arc chute is mounted on the breaker base by lifting the arc chute upwards or downwards without using a separate lever or the like. Since the work can be performed in a simple and easy manner, the workability is improved, the space required for the detachment of the arc chute is minimized, the appearance of the breaker box can be reduced, and the weight can be reduced.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, and the same reference numerals will be used for the same parts throughout the drawings.

1 shows a cross-sectional view showing a state where one leg portion of an arc chute is seated on a first holder; 2 is a cross-sectional view showing a state in which the first holder is moved to a stowed position according to the pivoting of the arc chute; 3 is a cross-sectional view showing a state in which the second holder is moved to the stowed position according to the turning of the arc chute; 4 is a cross-sectional view showing a state in which the mounting of the arc chute is completed and the first holder and the second holder are in the mounting position.

The arc chute mounting structure 10 according to the present invention includes a first holder 26 and a second holder 34.

A recess 20 is provided in the breaker base 12 of the electric vehicle, and a depression 22 is provided at the left end of the bottom surface of the recess 20. The arc chute 14 has a body portion 16 formed therein, and leg portions 18 are formed at both horizontal ends of the body portion 16, respectively. The left leg 18 of the two legs 18 can be mounted by being received in the recess 22.

An accommodating part 24 is formed at the bottom right end and the right wall surface of the recess 20, and the breaker base 12 is formed with a first groove 28 communicating with the accommodating part 24. The first holder 26 having the shape of the letter 'B', which is generally rotated 90 degrees in the counterclockwise direction, is accommodated in the accommodating part 24, and the first spring 30 is accommodated in the first groove 28. The first holder 26 is disposed between the protruding position in close contact with the left support wall of the accommodating part 24, the accommodating position in close contact with the right support wall of the accommodating part 24, and the left supporting wall part and the right supporting wall part. It is movable between mounting positions located at. The first spring 30 presses the first holder 26 toward the protruding position or the mounting position. A seating portion 40 may be formed on the upper surface of the horizontal portion and the left side of the vertical portion of the first holder 26, and the right leg portion 18 of the arc chute 14 may be seated on the seating portion 40. Will be.

On the left wall surface of the recess 20, a second groove 32 is formed which generally has a cross-sectional shape of 'ㅏ', and the second groove 32 also has a second holder having a generally '형상' shape ( 34) is stored. At the left end of the second holder 34, a center hole 42 is formed in which one side is closed. One end of the second spring 36 lands on the bottom surface of the second groove 32, and the other end of the second spring 36 lands on the closed end of the center hole 42. At the right end of the second holder 34 a conical portion 38 is formed. The second holder 34 has a protruding position at which the conical portion 38 completely protrudes to the outside, and a receiving position at which the conical portion 38 is completely received into the second groove 32 and the conical portion ( 38) is movable between mounting positions located between the protruding position and the receiving position. The second spring 36 presses the second holder 34 toward the protruding position or the mounting position.

Hereinafter, the installation and desorption process of the arc chute 14 using the arc chute mounting structure 10 according to the present invention structured as described above will be described in detail.

First, as shown in FIG. 1, the right leg 18 of the arc chute 14 is seated on the seating portion 40 of the first holder 26 in a protruding position. As shown in Fig. 2, when the arc chute 14 is rotated counterclockwise, the first holder 26 is moved to the stowed position, overcoming the elastic force of the first spring 30. As shown in FIG. Then, as shown in FIG. 3, the second holder 34 is moved to the storage position as the left leg portion 18 of the arc chute 14 contacts the second holder 34. Finally, as shown in FIG. 4, when the left leg portion 18 of the arc chute 14 is housed in the depression 22, the first holder 26 and the second holder 34 are first springs. The pressing force of the 30 and the second spring 36 is respectively moved to the mounting position.

The detachable process is performed in the reverse order of the attaching process.

According to the above-described configuration of the present invention, the arc chute is detached from the breaker base or the arc chute is removed from the breaker base by lifting the arc chute upwards or downwards without using a separate lever or the like. Since the mounting operation can be performed in a simple and easy manner, the space required for the removal and detachment of the arc chute is minimized, the appearance of the breaker box can be reduced and the weight can be reduced.

Although the present invention has been shown and described with reference to certain preferred embodiments, the present invention is not limited thereto and the present invention is not limited to the spirit or the field of the present invention provided by the following utility model registration claims. It will be readily apparent to one of ordinary skill in the art that these various modifications and variations can be made.

Claims (2)

Breaker base 12 in which the receiving portion 24 is formed; One or more first holders 26 which are inserted into the receiving portion 24 in a movable manner between the protruding position and the receiving position and the mounting position to detach and mount the arc chute 14 with respect to the breaker base 12. ) And the first spring 30 for pressing the first holder 26 toward the protruding position or the mounting position, wherein the first holder 26 is rotated 90 degrees counterclockwise. While taking the shape, the leg portion 18 integrally fixed to the body portion 16 of the arc chute 14 may be seated on the horizontal wall portion thereof, and the housing portion 24 may be mounted on the breaker base 12. Is formed in communication with the first groove 28 to allow the first spring 30 to be accommodated in the first groove 28, while the second groove 32 formed in the breaker base 12 The arc chute 14 can be moved by being fitted so that it can be moved between the protruding position and the storing position and the mounting position. It is further provided with one or more second holders 34 for detaching and mounting the breaker base 12 and a second spring 36 for pressing the second holders 34 toward the protruding or mounting position. In addition, a recess 20 is formed in the breaker base 12, and the second groove 32 is formed on an upstanding wall surface of the breaker base 12 that provides the recess 20. The body portion 16 of the arc chute 14 may be accommodated, one or more recesses 22 are formed on the bottom surface of the recess 20, and the arc chute 22 is formed on the recess 22. 14. An arc chute detachable structure for an electric car circuit breaker, characterized in that the saree portion 18 fixed to the body portion 16 of the body 14 can be accommodated. The arc chute detachable structure according to claim 1, wherein one end of the second holder has a conical cross section.