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公开(公告)号：US10811207B2
公开(公告)日：2020-10-20
申请号：US16511707
申请日：2019-07-15
Applicant: LSIS CO., LTD.
Inventor： Jeongjae Lim , Kihwan Oh
Abstract: The present disclosure relates to an arc extinguishing device of a molded case circuit breaker which includes a fixed contactor fixedly provided on part of a base assembly case; a movable contactor brought into contact with or separated from the fixed contactor; and an arc extinguishing unit configured to extinguish an arc generated when the movable contactor is separated from the fixed contactor, and the arc extinguishing unit including a pair of side plates provided on the base assembly case; and a plurality of grids provided to have a predetermined distance between the pair of side plates, and the grid including a first grid formed with a first cutout portion on a first side surface where an arc is generated; and a second grid formed with a second cutout portion having a depth different from that of the first cutout portion on a second side surface where an arc is generated.
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公开(公告)号：US20180190462A1
公开(公告)日：2018-07-05
申请号：US15857001
申请日：2017-12-28
Applicant: LSIS CO., LTD.
Inventor： Kihwan Oh
Abstract: The present invention relates to a molded-case circuit breaker for direct current (DC), and more particularly, to a molded-case circuit breaker for DC that contains an internal connecting conductor connecting adjacent terminals to improve insulation performance and assemblability and reduce occupied space. There is provided a molded-case circuit breaker for DC that contains a plurality of interruption units within an outer casing, the DC circuit breaker including a two-unit connecting heater that connects fixed contacts of adjacent interruption units, the two-unit connecting heater being placed within the outer casing.
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公开(公告)号：US09837234B2
公开(公告)日：2017-12-05
申请号：US15379280
申请日：2016-12-14
Applicant: LSIS CO., LTD.
Inventor： Kihwan Oh
CPC classification number: H01H71/7463 , H01H71/025 , H01H71/04 , H01H71/08 , H01H71/2409 , H01H71/74
Abstract: Disclosed embodiments include an instant trip mechanism for a molded case circuit breaker. In some embodiments, the mechanism includes an adjustment dial to set a current for an instant trip operation; an instant bar provided with an upper portion contactable with the adjustment dial, a shaft portion serving as a rotation shaft, and a lower extending portion downwardly extending from the shaft portion; an electromagnet unit to generate a magnetic attraction force that is proportional to an amount of current flowing on the circuit; an armature rotatable with a lower end portion supported by a shaft, and attracted toward the electromagnet unit by the magnetic attraction force; and a spring for applying to the armature a load varying in a direction of the armature getting away from the electromagnet unit.
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Patent Agency Ranking
公开(公告)号：US10483065B2
公开(公告)日：2019-11-19
申请号：US15857001
申请日：2017-12-28
Applicant: LSIS CO., LTD.
Inventor： Kihwan Oh
Abstract: The present invention relates to a molded-case circuit breaker for direct current (DC), and more particularly, to a molded-case circuit breaker for DC that contains an internal connecting conductor connecting adjacent terminals to improve insulation performance and assemblability and reduce occupied space. There is provided a molded-case circuit breaker for DC that contains a plurality of interruption units within an outer casing, the DC circuit breaker including a two-unit connecting heater that connects fixed contacts of adjacent interruption units, the two-unit connecting heater being placed within the outer casing.
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公开(公告)号：US10811209B2
公开(公告)日：2020-10-20
申请号：US16502732
申请日：2019-07-03
Applicant: LSIS CO., LTD.
Inventor： Jeongjae Lim , Kihwan Oh
Abstract: A switching mechanism of a circuit breaker includes a case, a handle rotatably coupled to a side plate fixed to the case, a U-pin coupled to a lower portion of the handle, a lever coupled to the U-pin, and a crossbar disposed in a mounting portion protruding from the case to be perpendicularly movable, the crossbar being moved by receiving contact pressure of the lever, wherein the lever is provided with a contact pressure portion formed in a curved surface on a lower surface thereof, to press the crossbar perpendicularly downward upon closing a circuit.
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公开(公告)号：US10332714B2
公开(公告)日：2019-06-25
申请号：US15644447
申请日：2017-07-07
Applicant: LSIS CO., LTD.
Inventor： Kihwan Oh
Abstract: Provided is a trip mechanism for DC molded case circuit breaker, in which the insulating distance between the poles increases without any increase in whole product size, thereby reliably providing a trigger output against an over current and a fault current instantaneous breaking required. The trip mechanism includes a trip mechanism part including an instantaneous trip mechanism, the instantaneous trip mechanism including a movable member to operate according to a fault current instantaneous breaking required, and a thermal trip mechanism including a bimetal to operate according to an over current, the trip mechanism part being provided for one of two adjacent poles; a crossbar that is rotatable by contacting and pressing of the movable member of the instantaneous trip mechanism or the bimetal of the thermal trip mechanism; and a shooter that is provided to be rotatable by contacting of the crossbar rotating.
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公开(公告)号：US10770248B2
公开(公告)日：2020-09-08
申请号：US16286925
申请日：2019-02-27
Applicant: LSIS CO., LTD.
Inventor： Kihwan Oh , Kyunghwan Oh
Abstract: The present disclosure relates to a molded case circuit breaker, and more particularly, to a contact unit of a molded case circuit breaker. A molded case circuit breaker according to an embodiment of the present disclosure may include a fixed contact; a movable contact rotatably provided on a shaft body to be brought into contact with or separated from the fixed contact; and an insulating barrier that enters between the fixed contact and the movable contact during interruption, wherein the insulating barrier is coupled to the movable contact to rotate along a circumferential surface of a shaft body.
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公开(公告)号：US10147578B2
公开(公告)日：2018-12-04
申请号：US15473530
申请日：2017-03-29
Applicant: LSIS CO., LTD.
Inventor： Sungrok Yoo , Kihwan Oh
Abstract: A mechanism coupling structure of a molded-case circuit breaker according to an embodiment of the present disclosure including a shaft to one side of which a movable contactor is coupled, and on a part of which a rotating pinhole is formed in a penetrating manner; a base assembly into which the shaft is rotatably accommodated and coupled, a switch mechanism coupled to an upper portion of the base assembly and exposed with a first lower link and a second lower link at a lower side thereof, and a rotating pin coupled in a penetrating manner to the first lower link, second lower link and rotating pinhole may be provided therein, wherein the rotating pin has a protruding portion for release prevention at one end thereof.
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