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    Tool changer and tool change system
    22.
    发明授权
    Tool changer and tool change system 有权

    公开(公告)号：US11207785B2

    公开(公告)日：2021-12-28

    申请号：US16787646

    申请日：2020-02-11

    Applicant: LG ELECTRONICS INC.

    Inventor： Changwoo Son

    IPC: B25J15/04 ,  B23B31/28

    Abstract: A tool changer is included in a manipulator of a robot and selectively fastens to a tool by a magnetic force. The tool changer may include a housing; an inner core embedded in the housing; a coil wound around the inner core, wherein a current is applied to the coil; a pair of connecting cores connected to both ends of the inner core, protruding from the housing to the tool, and inserted into a connecting groove of the tool; a switch configured to regulate the current applied to the coil; and a controller configured to open or close the switch according to a set frequency.

    Door opening and closing device for refrigerator and method of controlling the same
    24.
    发明授权
    Door opening and closing device for refrigerator and method of controlling the same 有权

    公开(公告)号：US10197326B2

    公开(公告)日：2019-02-05

    申请号：US15508801

    申请日：2015-09-04

    Applicant: LG ELECTRONICS INC.

    Inventor： Changwoo Son ,  Cholok Han ,  Myoungju Kang

    IPC: F25D23/02 ,  E05F15/614 ,  E05F15/619 ,  F25D11/00 ,  F25D29/00 ,  H02P6/182

    Abstract: A door opening and closing device for a refrigerator includes a door coupled to a main body, an opening and closing unit including a drive unit for generating rotational force by means of a motor and a door rotating mechanism for opening or closing the door, a device for measuring a back electromotive force generated from the motor, a power circuit connected for supplying power to the motor, a circuit for transmitting back electromotive force of the motor to the device, a control switch for selectively connecting the motor to the circuit or the power circuit, and a control unit for connecting the control switch to the power circuit when the motor is activated, and connecting the control switch to the circuit and opening or closing the door when the motor is deactivated, wherein the control unit closes the door when a predetermined back electromotive force is input to the device.

    Tool changer and tool change system having the same
    26.
    发明授权
    Tool changer and tool change system having the same 有权

    公开(公告)号：US11738470B2

    公开(公告)日：2023-08-29

    申请号：US16748348

    申请日：2020-01-21

    Applicant: LG ELECTRONICS INC.

    Inventor： Changwoo Son ,  Seukwoo Ryu ,  Sunggil Park ,  Seyul Son ,  Taeyoung Choi

    IPC: B25J15/06 ,  H02K21/20 ,  H02K5/22 ,  B25J15/04

    CPC classification number: B25J15/0608 ,  B25J15/0441 ,  H02K5/225 ,  H02K21/20

    Abstract: A tool changer in accordance with the present disclosure comprises: a housing fastened to a manipulator of a robot, wherein the housing is a non-magnetic material; a bar-shaped magnet disposed in the housing; a motor configured to rotate the magnet on a rotation shaft perpendicular to a longitudinal direction of the magnet; and a core configured to derive a path of a magnetic flux by the magnet. The core comprises: a pair of first poles facing both poles of the magnet, when the magnet rotates to be elongated in a first direction; a bridge configured to connect the pair of the first poles and disposed in the housing, wherein the bridge is a magnetic material; a pair of second poles facing the both poles of the magnet, when the magnet rotates to be elongated in a second direction perpendicular to the first direction; and a pair of terminals connected to the second poles and facing a magnetic body disposed outside the housing.

    Tool changer and tool change system including the same
    27.
    发明授权
    Tool changer and tool change system including the same 有权

    公开(公告)号：US11679512B2

    公开(公告)日：2023-06-20

    申请号：US16582764

    申请日：2019-09-25

    Applicant: LG ELECTRONICS INC.

    Inventor： Changwoo Son

    IPC: B23Q3/155 ,  B25J15/04 ,  B25J9/12

    CPC classification number: B25J15/0408 ,  B25J9/126

    Abstract: A tool changer includes a case including a plurality of case bodies that are separated from each other, a fixed body disposed in the case, a shaft disposed in the case and extending a long way in an axial direction of the case, a motor configured to rotate the shaft, a moving body configured to move along the shaft based on rotation of the shaft, and a plurality of pushers connected to the fixed body via a first link, connected to the moving body via a second link, and configured to press the case body in an outer radial direction when the moving body moves towards the fixed body.

    Gripper
    29.
    发明授权
    Gripper 有权

    公开(公告)号：US11511445B2

    公开(公告)日：2022-11-29

    申请号：US16803759

    申请日：2020-02-27

    Applicant: LG ELECTRONICS INC.

    Inventor： Changwoo Son ,  Changkyu Kim ,  Sunggil Park ,  Seyul Son ,  Taeyoung Choi

    IPC: B25J15/12 ,  B25J15/00

    Abstract: Disclosed is a gripper including a pair of main bodies each having an internal space and spaced apart from each other, a pair of openings provided at ends of the pair of main bodies, a pair of moving bodies protruding from the ends of the pair of main bodies through the openings, a pair of inner bodies fixed in the internal space of the pair of main bodies, and a pair of springs configured to be compressed between the inner body and the moving body.

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