KR101003962B1

KR101003962B1 - Molded case circuit breaker

Info

Publication number: KR101003962B1
Application number: KR1020100022703A
Authority: KR
Inventors: 김관영; 김정남; 이용준
Original assignee: 주식회사 대륙
Priority date: 2010-03-15
Filing date: 2010-03-15
Publication date: 2010-12-30

Abstract

The present invention relates to a terminal cover of a circuit breaker, and more particularly, a circuit breaker for protecting a user and protecting the surroundings from arcs generated in the circuit breaker, as well as easily removing the cover installed on the terminal of the circuit breaker. The present invention relates to a terminal cover of the present invention, a case, a power supply terminal connected to a power source seated in a terminal groove formed in the case, a load terminal connected to a load, a tripping device formed inside the case, and the case. In the circuit breaker for wiring comprising a terminal cover coupled to, the partition between the terminal groove of the case is formed with a guide groove formed with a guide, the terminal cover, a partition for separating each phase is formed, the partition wall is the It provides a circuit breaker, characterized in that inserted into the guide groove.

Description

Molded case circuit breaker

The present invention relates to a circuit breaker, and more particularly, a cover installed on a terminal of the circuit breaker can be easily detached, and a terminal cover for protecting the user and protecting the surroundings from arcs generated from the circuit breaker is provided. It relates to a circuit breaker.

In general, the wiring breaker is a switchgear that is mainly installed in the switchgear in a house or factory to supply or cut off power to the load side.In the event of a large current exceeding the allowable value due to an abnormal phenomenon such as over current or short circuit in the load line during use. It is a circuit breaker that cuts off the power to protect the electric and electronic devices connected to the wire and load side on the line.

In addition, the circuit breaker drives the trip circuit to cut off the power when an abnormal phenomenon such as overcurrent occurs, and the arc is generated while the power circuit breaker is opened at the contact point where the power contacts each other. The generated arc is extinguished in the breaker, and there is an extinguishing device inside the breaker. However, even if the arc is extinguished by the extinguishing device, the arc can be emitted to the periphery of the breaker, so it is necessary to install the terminal cover of the breaker to protect the safety of the user and the surrounding load.

Various techniques have been proposed for the terminal cover of the conventional circuit breaker. Patent application No. 10-2001-0070184 relates to a terminal cover of a circuit breaker, wherein the terminal cover is mounted on the terminal portion of the circuit breaker to form an outlet at the front side, and is removed by pressing force on the upper and lower sides of the outlet. The cover member for the terminal or the busbar withdrawal is formed to form the outlet port while being formed, respectively, and takes the structure of connecting the terminal or the busbar by removing the connecting piece connecting the cover member and the terminal cover to each other as necessary. The above technique has an advantage in that different outlets are formed according to the terminals or busbars connected to the terminal cover, but since there is only a locking jaw, it is not easy to remove the terminal cover from the circuit breaker. There was a problem that the cover could be removed.

In addition, another prior art Utility Model Registration Application No. 20-2005-0013208 relates to a circuit breaker, the wiring breaker enclosure is formed with a hinge hole and a groove for coupling to the terminal cover, the hinge hole of the terminal cover The circular protrusion is inserted and rotatable, and the groove is inserted into and fixed to the groove. In addition, the locking device has a structure in which the terminal cover can be easily removed from the enclosure. In the case of the above technique, since a separate locking device is required for the detachment of the terminal cover, the structure becomes complicated, and when there is no locking device, the terminal cover is not easily removed when the terminal cover is fixed to the enclosure. In addition, there was a problem that anyone can remove the terminal cover.

The present invention has been made to solve the above problems, the present invention is not only easy to remove the terminal cover from the circuit breaker, but also easy to manufacture due to the addition of a simple structure without a separate locking device to the circuit breaker In addition, the purpose of the present invention is to provide a circuit breaker for installing a terminal cover that can restrict the separation of the terminal cover by installing a seal when it is necessary to restrict the detachment of the terminal cover.

In order to achieve the above object, the present invention provides a case, a terminal groove formed in the case in which the power terminal and the load terminal is seated, a partition wall formed between the terminal groove and the terminal groove, and a trip formed inside the case. A circuit breaker including a device and a terminal cover coupled to the case, the barrier rib between the terminal groove of the case is formed with a guide groove formed with a guide, the predetermined position on any one of the inner partition wall formed with the guide groove A locking groove is formed in the guide wall, and a bolt fastening hole is formed inside the guide groove of the partition wall, and a mounting hole is formed inside the bolt fastening hole, and the terminal cover is formed with a partition wall for separating each phase. A detachable bar having a locking jaw inserted into a guide groove having a groove formed therein and seated in the locking groove; A driving hole for moving the bar is formed, and the detachable bar is formed by cutting a predetermined portion up and down the partition wall so as to move elastically, and a partition wall removing part is formed, and a mounting hole insertion hole is formed inside the partition wall. It provides a circuit breaker, characterized in that the insertion hole is fixed to the mounting hole.

In the present invention, the detachable bar is formed at the end of the terminal cover partition wall, so that the terminal cover can be attached and detached only by the detachable bar. The terminal cover does not fall to the upper part when the catching jaw formed in the detachable bar is seated in the catching groove formed in the guide groove, and in order to detach the terminal cover, the terminal cover is removed from the case after moving the detachable bar to remove the catching jaw seated in the catching groove. Just do it. In addition, since the mounting hole insertion port is fixedly seated in the detachable bar seated in the locking groove formed in the guide groove and the mounting hole formed in the case, the movement of the terminal cover is limited, so that the play of the terminal cover is prevented and does not move or fall easily.

In the present invention, the partition wall is inserted into the guide groove is inserted into the end, the end of the partition wall, the partition end portion is formed by the guide and the guide groove is formed so that the movement is limited by the guide and the guide groove of the case It may be further included. The guide and the guide groove may have a cross section in the form of a circle, a square or a polygon, and the partition wall end of the terminal cover may have a cross section in the shape of a circle, a square or a polygon so as to move along the guide groove. Therefore, the terminal cover can move up and down, but the movement is limited to the front.

In the present invention, a sealing bar having a sealing hole for sealing is mounted at a predetermined position of the case, and a sealing bar through hole is formed at a position corresponding to the sealing bar in the terminal cover, and the sealing bar through hole of the terminal cover is sealed. It can be inserted directly and sealed. This is to prevent the power cable or bus bar installed on the terminal cover from being unwound or changed by sealing the terminal cover. In addition, it may be an advantage that the user's safety can be protected by sealing the terminal cover.

The present invention is not only easy to remove the terminal cover from the circuit breaker, but also simple to manufacture due to the simple structure that can be easily attached and detached without a separate locking device for the circuit breaker, and also in the case of restricting the removal of the terminal cover It is possible to limit the separation of the terminal cover by installing a seal.

1 is an overall perspective view of a circuit breaker according to an embodiment of the present invention.
Figure 2 is a perspective view of the terminal cover is removed from the circuit breaker embodiment according to the present invention.
Figure 3 is a cross-sectional view of the terminal cover is coupled to the circuit breaker for an embodiment according to the present invention.
Figure 4 is a bottom perspective view of a circuit breaker terminal cover for an embodiment according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, this is only to describe in detail enough to be able to easily carry out the invention by those skilled in the art, which does not mean that the technical spirit and scope of the present invention is limited.

First, prior to describing the preferred embodiment of the present invention, it is noted that in the various embodiments of the present invention, the same reference numerals are used for the same configuration.

1 is an overall perspective view of a circuit breaker according to an embodiment of the present invention, Figure 2 is a perspective view of a state in which the terminal cover is removed from the circuit breaker according to the embodiment of the present invention, Figure 3 is a circuit breaker in an embodiment according to the present invention 4 is a cross-sectional view of the terminal cover in a coupled state, and FIG. 4 is a bottom perspective view of the circuit breaker terminal cover according to the embodiment of the present invention.

1 is a perspective view of a circuit breaker according to an embodiment of the present invention. In the drawing, the circuit breaker 1 has a printed circuit board constituting a tripping device and a tripping circuit inside (not shown), and the locking device 3 on the side of the handle 2 and the handle 2 to the outside. Is configured, the trip button 4 is formed on the side of the locking device (3). Terminal covers 20 are mounted to both portions of the handle 2.

2 is a perspective view illustrating a state in which the terminal cover 20 is separated from the circuit breaker 1. In the figure, the terminal cover 20 is formed with a partition wall 21 for separating each phase in front, and an outlet port is formed between the partition wall 21 and the partition wall to be connected to a power source or a load terminal by inserting an electric wire or a bus bar. A slot hole 28 is formed at an upper portion of the outlet, and a driving hole 24 and a seal bar through hole 27 are formed in the upper plane. In addition, the detachable bar 22 is formed in any one of the inner partitions 21. The upper surface of the terminal cover is formed stepped to facilitate the coupling with the circuit breaker (1). The circuit breaker 1 is formed in a form in which the upper and lower cases 10 are coupled to each other, and power and load terminal grooves 11 are formed at left and right sides of the case 10. The partition wall 12 is formed between the terminal groove 11 and the terminal groove, and the guide groove 13 and the guide 14 are formed in the partition wall 12. The partition wall end 26 of the terminal cover 20 is inserted along the guide groove 13 and the guide 14. The partition end portion 26 may be formed in a predetermined shape formed by the guide groove 13 and the guide 14, and may have a rectangular, circular or polygonal cross section. That is, it may be formed as a square pillar or a cylinder. In the figure, the partition end 26 is formed in a square pillar. The detachable bar 22 is also formed using the partition wall end 26. However, in the case of the outer partition, the partition end may not be configured in a separate shape. This is because the terminal cover 20 can be sufficiently fixed even when only the inner partition end portion 26 is formed by the guide groove 13 and the guide 14. The upper surface of the partition wall 12 is formed with a bolt fastening hole 18 and a mounting hole 19 for installing in the wall or switchboard. The mounting hole insertion hole 29 formed in the terminal cover 20 is inserted into the mounting hole 19. The terminal cover 20 prevents clearance between the left and right and up and down by the mounting hole insertion port 29 so that the terminal cover can be fixed and seated on the circuit breaker 1. In addition, a sealing bar 16 is formed at one side of the partition 12, and a sealing hole 17 is formed at an end of the sealing bar 16. A sealing bar through hole 27 is formed in the terminal cover 20 corresponding to the sealing bar 16, and the terminal cover is inserted through the sealing bar 16. The sealing hole 17 is to prevent the arbitrary detachment of the terminal cover 20. When the seal is sealed in the sealing hole 17, it can be confirmed whether it is detachably attached.

3 is a cross-sectional view of the terminal cover coupled state. As shown in the figure, the detachable bar 22 formed in the terminal cover is inserted along the guide groove 13 and the guide 14 and the detachable bar 22 in the engaging groove 15 formed in the guide groove 13. The locking jaw 23) is caught and the terminal cover is fixed to the case of the circuit breaker. If the separation bar 22 is pulled outwards, the locking jaw 23 is pulled out of the locking groove 15, and thus the terminal cover 20 can be separated from the case. The locking groove 15 is a groove formed in the front surface of the bolt fastening hole 18 as shown in FIG. 3, where the locking jaw 23 of the detachable bar 22 is seated in the locking groove 15. to be. In order to move the detachable bar 22 elastically, the removal part 25 is formed in the rear partition wall of the detachable bar. Therefore, the detachable bar 22 can move outward by a predetermined distance, and the detachable terminal cover can be easily detached. A driving hole 24 for moving the detachable bar 22 is formed at an upper portion of the detachable bar 22, so that a user can easily move the detachable bar 22 through the hole 24.

4 is a bottom perspective view of the terminal cover. As shown in the figure, the detachable bar 22 is formed on one of the partition walls 21 formed inside. The detachable bar 22 is formed using the partition end 26. This is because the terminal cover 20 may be inserted into and removed from the guide groove 13 by the partition end 26. The removal part 25 is formed at the rear of the detachable bar 22, and is configured to elastically move the detachable bar 22. In addition, a mounting hole insertion hole 29 is formed in the upper bottom of the terminal cover 20 to be inserted into and fixed to the mounting hole 19 formed in the circuit breaker 1. In addition, a driving hole 24 is formed to move the detachable opening 22 to the user, and the user easily moves the detachable bar 22 through the driving hole 24 to remove the terminal cover 20 from the circuit breaker. can do. As shown in FIGS. 3 and 4, the terminal cover is strongly bounded by the partition end 26 inserted into the guide groove 13 and the mounting hole insertion hole 29 mounted in the mounting hole 19, thereby removing the bar. It will not fall out without the operation of (22).

Although some embodiments have been described above by way of example, it will be apparent to those skilled in the art that the present invention may be embodied in many other forms without departing from the spirit and scope thereof. Accordingly, the above-described embodiments should be considered as illustrative and not restrictive, and all embodiments within the scope of the appended claims and their equivalents shall be included within the scope of the present invention.

1: wiring breaker 2: handle
3: locking device 4: trip button
10: case 11: terminal groove
12: bulkhead 13: guide groove
14: guide 15: locking groove
16: sealing bar 17: sealing hole
18: bolt fastening hole 19: mounting hole
20: terminal cover 21: partition wall
22: detachable bar 23: hanging jaw
24: driving hole 25: partition wall removing portion
26: bulkhead end 27: seal bar through hole
28: slot hole 29: mounting hole insertion hole

Claims

A terminal groove 11 formed in the case 10 and a case 10, in which the power terminal and the load terminal are seated, partition walls 12 formed between the terminal groove 11 and the terminal groove 11, In the circuit breaker (1) comprising a trip device formed inside the case 10 and a terminal cover 20 coupled to the case 10,
A guide groove 13 in which a guide 14 is formed is formed in the partition 12 between the terminal grooves 11 of the case 10, and a predetermined position is formed in any one of the inner partitions in which the guide groove 13 is formed. A locking groove 15 is formed in the bolt hole, and a bolt fastening hole 18 is formed inside the guide groove 13 of the partition 12, and a mounting hole 19 is formed inside the bolt fastening hole 18. Become,
The terminal cover 20 is formed with a partition wall 21 separating each phase, and is inserted into the guide groove 13 in which the locking groove 15 is formed, and the locking jaw 23 seated in the locking groove 15. A detachable bar 22 formed thereon, and a driving hole 24 for moving the detachable bar 22 on the upper portion of the terminal cover 20, and the detachable bar 22 may move elastically. The partition wall removal part 25 is formed to cut a predetermined portion of the partition wall 21 up and down so as to be spaced apart, and a mounting hole insertion hole 29 is formed inside the partition wall 21 to provide the mounting hole 19. The circuit breaker for inserting and fixing.

delete

The method according to claim 1,
An end portion of the partition wall 21 inserted into the guide groove 13 is inserted, and an end portion 26 of the partition wall is moved by the guide 14 and the guide groove 13 of the case 10. The breaker for wiring, characterized in that it further comprises a partition end (26) of a shape corresponding to the guide (14) and the guide groove (13) to be limited.

The method according to claim 1,
A seal bar 16 having a seal hole 17 for sealing is mounted at a predetermined position of the case 10, and the terminal cover 20 has a seal bar through hole at a position corresponding to the seal bar 16. (27) is formed, the sealing bar through-holes 27 of the terminal cover 20 is inserted into the sealing bar (16) is a circuit breaker, characterized in that sealed.