公开(公告)号：US12265126B2

公开(公告)日：2025-04-01

申请号：US17641608

申请日：2020-05-11

Applicant: LS ELECTRIC CO., LTD.

Inventor： Min-Kyu Seo

IPC: G01R31/327 ,  H01H33/662 ,  H01H33/664 ,  H01H33/666

Abstract: The present disclosure provides a contact monitoring device for a vacuum circuit breaker. The contact monitoring device is provided in a vacuum circuit breaker comprising: a vacuum interrupter having a fixed electrode which is fixed in an insulating container and is provided with a fixed contact at one end, and a movable electrode which is installed in the insulating container to be able to be lifted or lowered wherein the vacuum interrupter is provided with a movable contact at one end, the movable contact contacting or being separated from the fixed contact when the movable electrode is lifted or lowered; and a push rod assembly which is coupled to the other end of the movable electrode and lifts or lowers the movable electrode. In addition, the present disclosure provides a vacuum circuit breaker having the contact monitoring device.

公开(公告)号：US12249473B2

公开(公告)日：2025-03-11

申请号：US17612389

申请日：2019-08-20

Applicant: LS ELECTRIC CO., LTD.

Inventor： Jungwoo Yoo

IPC: H01H50/18 ,  H01H50/02 ,  H01H50/36 ,  H01H50/54

Abstract: Disclosed are a direct current relay and a manufacturing method therefor. A movable contact part provided in a direct current relay comprises a movable contact and a lower yoke positioned below the movable contact configured to attenuate an electromagnetic repulsive force generated by contact between the movable contact and a fixed contact. The movable contact is provided with a coupling protrusion portion that protrudes downward. The lower yoke is provided with a movable contact coupling portion into which the coupling protrusion portion is inserted. The coupling protrusion portion can receive pressure directed radially outward after being inserted into the movable contact coupling portion. The coupling protrusion portion is expanded radially outward by the pressure. Accordingly, the outer circumferential surface of the coupling protrusion portion can be inserted into and coupled to the inner circumferential surface of the lower yoke that forms the movable contact coupling portion.

公开(公告)号：US20250069830A1

公开(公告)日：2025-02-27

申请号：US18726226

申请日：2023-01-02

Applicant: LS ELECTRIC CO., LTD.

Inventor： Kihwan OH ,  Kyunghwan OH

IPC: H01H33/04 ,  H01H33/53

Abstract: The present disclosure relates to a wiring circuit breaker and, more specifically, to a wiring circuit breaker having an expanded arc gas discharging port formed through a lower part of an enclosure and thus having enhanced exhaust performance. A wiring circuit breaker according to an embodiment of the present disclosure comprises: an enclosure for the wiring circuit breaker; a base assembly coupled to the inside of the enclosure; an exhaust duct connected to an exhaust part of the base assembly; and a terminal part mount coupled to a terminal part of the enclosure and connected to the exhaust duct, wherein a center part exhaust groove is formed on the exhaust duct, and a center part exhaust hole communicating with the center part exhaust groove is formed through the terminal part mount.

公开(公告)号：US20240412933A1

公开(公告)日：2024-12-12

申请号：US18576299

申请日：2022-11-14

Applicant: LS ELECTRIC CO., LTD.

Inventor： Ha Su KIM ,  Jin Hee PARK ,  Young Jun SON

IPC: H01H50/38

Abstract: The present invention discloses an arc path formation unit and a direct current relay including the same, which can effectively guide a generated arc to the outside, including a magnet holder unit disposed between the outside of an arc chamber and the inside of a frame and including a first holder and a second holder different from each other; and a magnet unit attached to one surface of the magnet holder unit facing the arc chamber and forming a magnetic field in the arc chamber, wherein the first holder and the second holder are each bent at a predetermined angle and extended, the magnet unit is attached to both ends thereof, and a magnetic field formed in the magnet unit forms an electromagnetic force together with the electric current energizing through the direct current relay to guide the arc in a direction away from a fixed contact.

公开(公告)号：US12154748B2

公开(公告)日：2024-11-26

申请号：US17916705

申请日：2021-03-29

Applicant: LS ELECTRIC CO., LTD.

Inventor： Young Kim

IPC: H01H9/02 ,  H01H9/54

Abstract: The present disclosure relates to a power device for continuously detecting entrance and exit positions, the power device comprising: a cradle having a cradle terminal formed on the rear side; a circuit breaker mechanically and electrically connected to or disconnected from the cradle terminal; and a position detection means which is mounted inside the circuit breaker and detects the position of a body of the circuit breaker in real time.

公开(公告)号：US12148584B2

公开(公告)日：2024-11-19

申请号：US17910713

申请日：2021-03-03

Applicant: LS ELECTRIC CO., LTD.

Inventor： Sang Chul Lee

IPC: H01H33/18 ,  H01H9/44 ,  H01H31/08

Abstract: An arc extinguishing unit and an air circuit breaker comprising same are disclosed. The arc extinguishing unit according to an embodiment of the present disclosure comprises an arc extinguishing magnet located above a grid. The arc extinguishing magnet forms a magnetic field in the arc extinguishing part and in a fixed contact and a movable contact that are located adjacent to the arc extinguishing part. An arc generated as the fixed contact and the movable contact are separated from each other receives an electromagnetic force in the formed magnetic field. The electromagnetic force passes through the grid and is formed in a direction facing the exterior of the arc extinguishing part. Thus, the generated arc may be quickly extinguished and moved.

公开(公告)号：US20240371587A1

公开(公告)日：2024-11-07

申请号：US18682055

申请日：2022-10-17

Applicant: LS ELECTRIC CO., LTD.

Inventor： Jin Hee PARK ,  Ha Su KIM

IPC: H01H50/02 ,  H01H50/36 ,  H01H50/54

Abstract: An arc chamber and a direct current relay including the same are disclosed. The arc chamber may include a chamber space for accommodating a fixed contactor and a movable contactor that are electrically connected to an external power source or an external load; and a plurality of walls surrounding the chamber space from outside, wherein the plurality of walls include a first wall extending in one direction; a second wall extending in the other direction while forming a predetermined angle with the first wall from an end of the first wall; a third wall extending in the one direction while forming a predetermined angle with the second wall from an end of the second wall; and a fourth wall extending in the other direction while forming a predetermined angle with the third wall from an end of the third wall to the end of the first wall.

公开(公告)号：US20240367250A1

公开(公告)日：2024-11-07

申请号：US18572092

申请日：2021-12-21

Applicant: LS ELECTRIC CO., LTD.

Inventor： Ki Jeong KWON ,  Young Geun PARK

IPC: B23K3/08

Abstract: A cooling module, according to an embodiment of the present disclosure, for cooling an object to be brazed comprises: a body part having a contact part in contact with the object to be brazed, and cooling the object to be brazed; a first nipple connected to one side of the body part, and having a first supply flow path for receiving fluid from the outside; and a second nipple connected to the other side of the body part, and having a first discharge flow path for discharging the fluid to the outside, wherein the body part includes: a second supply flow path formed inside the body part so as to be connected to the first supply flow path; a second discharge flow path formed inside the body part so as to be connected to the first discharge flow path; and a connection flow path positioned to be adjacent to the contact part of the body part, and connecting the second supply flow path and the second discharge flow path.

公开(公告)号：US20240367249A1

公开(公告)日：2024-11-07

申请号：US18572680

申请日：2021-12-21

Applicant: LS ELECTRIC CO., LTD.

Inventor： Ki Jeong KWON ,  Rae Suk KANG

IPC: B23K3/06 ,  B23K3/08 ,  B23K37/04 ,  B24B41/06

Abstract: A brazing system according to an embodiment of the present invention, which is for brazing an object to be bonded to a base material, comprises: a turntable provided with a reception part for receiving the base material and rotatable clockwise or counterclockwise; a base material supply device for supplying the base material to the reception part; a brazing filler metal supply device for supplying a brazing filler metal to an upper side of the base material; a first heating device for bonding the brazing filler metal to the base material; a bonding object supply device for supplying the object to be bonded to an upper side of the brazing filler metal bonded to the base material; a second heating device which is in contact with opposite sides of the base material to fix the base material and is provided with electrodes for supplying electric current to the base material so as to bond the object to be bonded to the base material; and a cooling device which comes into contact with the object to be bonded to cool the object to be bonded.

公开(公告)号：US12132346B2

公开(公告)日：2024-10-29

申请号：US17755962

申请日：2020-03-18

Applicant: LS ELECTRIC CO., LTD.

Inventor： Yoonmin Lee

IPC: H02J9/06 ,  H02J7/00

CPC classification number: H02J9/061 ,  H02J7/0048 ,  H02J2207/20 ,  H02J2207/50

Abstract: The present disclosure comprises an alternating current-to-direct current converter for converting a commercial power current; a direct current-to-direct current converter for converting a battery current; a common output end at which the output end of the alternating current-to-direct current converter and the output end of the direct current-to-direct current converter are connected through a link capacitor having a preset bus voltage; a first circuit breaking part for opening or closing the current path between the common output end and a load; a second circuit breaking part for opening or closing the current path between the commercial power and the alternating current-to-direct current converter; a third circuit breaking part for opening or closing the current path between the battery and the direct current-to-direct current converter; and a control unit.