Interlock device of withdrawable arc eliminator

Patent metadata

Field	Value
Publication number	US-2017263389-A1
Application number	US-201615211337-A
Country	US
Kind code	A1
Filing date	Jul 15, 2016
Priority date	Mar 11, 2016
Publication date	Sep 14, 2017
Grant date	—

Abstract

The present invention relates to an interlock device of a withdrawable arc eliminator, and more particularly, to an interlock device of a withdrawable arc eliminator capable of preventing insertion or withdrawal of an arc eliminator applied to an electrical panel, in a closed state of the arc eliminator.

First claim

What is claimed is:

1 . An interlock device of a withdrawable arc eliminator, comprising:
an arc eliminator body; and a carriage module configured to move the arc eliminator body, wherein the carriage module includes: an insertion and withdrawal screw; a truck moved by the insertion and withdrawal screw; a movable pin installed at part of the truck so as to be moveable up and down; and a movable pin lifter backward-moved by being pushed by a handle for rotating the insertion and withdrawal screw, and configured to upward-move the movable pin, and wherein the arc eliminator body includes: a housing having a space; an arc extinguisher installed at the housing, and including a moving rod disposed to move to the space back and forth; a fixed body disposed at the space, and having an insertion opening for inserting the movable pin thereinto; an interlock body disposed to be moveable to a first position between the insertion opening and the movable pin, and a second position except for the first position between the insertion opening and the movable pin; and an interlock body moving member operated by interworking with the moving rod, and configured to move the interlock body to the first position or the second position.

2 . The interlock device of a withdrawable arc eliminator of claim 1 , wherein the interlock body moving member includes a link configured to move the interlock body to the first position when the arc extinguisher is in a closed state.

3 . The interlock device of a withdrawable arc eliminator of claim 2 , wherein the link includes:
a rotation shaft installed at the housing; a first link installed at the rotation shaft, and contacting an end portion of the moving rod; and a second link installed at the rotation shaft, and configured to move the interlock body back and forth.

4 . The interlock device of a withdrawable arc eliminator of claim 3 , wherein the interlock body includes:
a fore end contact portion contacting a front part of an end portion of the second link; and a rear end contact portion contacting a rear part of the end portion of the second link, and wherein a distance between the fore end contact portion and the rear end contact portion is greater than a front and rear width of the end portion of the second link.

5 . The interlock device of a withdrawable arc eliminator of claim 4 , wherein the interlock body further includes a protrusion protruding from one of the fore end contact portion and the rear end contact portion, the protrusion spaced apart from another of the fore end contact portion and the rear end contact portion.

6 . The interlock device of a withdrawable arc eliminator of claim 1 , wherein the interlock body includes:
a guide portion guided to the fixed body; and a movable pin contact portion protruding from the guide portion, and contacting an upper end of the movable pin when the movable pin moves upward, and wherein the guide portion is formed to be longer than the movable pin contact portion back and forth.

7 . The interlock device of a withdrawable arc eliminator of claim 1 , wherein the housing is provided with a lower through hole at a lower plate portion thereof, the lower through hole through which a movable pin guide for guiding an upward-and-downward movement of the movable pin passes.

8 . The interlock device of a withdrawable arc eliminator of claim 1 , wherein the fixed body includes:
a first body part disposed at the space in a vertical state; and a second body part formed at a region of the first body part in a horizontal state, and having the insertion opening which is disposed above the movable pin.

9 . The interlock device of a withdrawable arc eliminator of claim 1 , further comprising one or more interlock body guides installed at the fixed body and configured to guide a linear movement of the interlock body.

10 . The interlock device of a withdrawable arc eliminator of claim 9 , wherein a slit, guided by the interlock body guide, is formed at the interlock body to be long back and forth.

Assignees

• Lsis Co Ltd

Inventors

• Lee Hyunwook
• Ahn Kwanghyeon
• Lee Seogwon
• Jeong Youngwoo

Classifications

• H02B1/306

  Accessories, e.g. windows · CPC title

• H02B1/056

  Mounting on plugboards · CPC title

• H02B11/133 Primary

  with interlock · CPC title

• H01H9/30 Primary

  Means for extinguishing or preventing arc between current-carrying parts · CPC title

• H02B1/015 Primary

  Boards, panels, desks; Parts thereof or accessories therefor · CPC title