公开(公告)号：US20240199381A1

公开(公告)日：2024-06-20

申请号：US18286257

申请日：2021-04-22

Applicant: Mitsubishi Electric Corporation

Inventor： Takehiko KUBOTA

IPC: B66B13/14

CPC classification number: B66B13/143

Abstract: A landing-door switch circuit according to the present disclosure includes an upper-car safety circuit, an upper-car auxiliary circuit, a lower-car safety circuit, and a lower-car auxiliary circuit. The upper-car safety circuit and the lower-car safety circuit connect excitation coils of switching devices of a power supply for driving an upper car and a lower car, respectively, and a power supply, and include main circuits in which landing-door switches are connected in series, and first connection units and third connection units branched from the main circuits. The upper-car auxiliary circuit and the lower-car auxiliary circuit include a second connection unit and a fourth connection unit on the lower car and the upper car, respectively, to bypass the landing-door switches.

公开(公告)号：US20160194180A1

公开(公告)日：2016-07-07

申请号：US14916456

申请日：2013-09-27

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Takehiko KUBOTA

IPC: B66B1/32 ,  B66B5/02

CPC classification number: B66B1/32 ,  B66B5/02 ,  B66D5/08 ,  B66D5/30

Abstract: In an elevator control apparatus, a DC-DC converter including a first switching element and a second switching element is configured to generate power for driving an elevator brake by alternately operating each of the first switching element and the second switching element. A first photocoupler and a second photocoupler are configured to independently operate the first switching element and the second switching element, respectively. A first calculation unit and a second calculation unit are configured to independently control power supply voltages of the first photocoupler and the second photocoupler, respectively.

Abstract translation: 在电梯控制装置中，包括第一开关元件和第二开关元件的DC-DC转换器被配置为通过交替地操作第一开关元件和第二开关元件中的每一个而产生用于驱动电梯制动器的电力。 第一光耦合器和第二光电耦合器被配置为分别独立地操作第一开关元件和第二开关元件。 第一计算单元和第二计算单元分别独立地控制第一光电耦合器和第二光电耦合器的电源电压。

公开(公告)号：US20190077632A1

公开(公告)日：2019-03-14

申请号：US16083683

申请日：2016-04-26

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Shingo KONDO ,  Takehiko KUBOTA

IPC: B66B5/00

Abstract: An elevator inspection operation apparatus for performing an inspection operation for a car in a pit of an elevator includes: an operation mode selector switch configured to switch an operation mode between a normal operation and the inspection operation; a return switch, which is provided outside the pit of the elevator, and is to be manipulated when the operation mode is to be switched from the inspection operation to the normal operation; and a latching relay configured to be latched to an inspection operation side when the operation mode has been switched from the normal operation to the inspection operation by the operation mode selector switch, and to maintain a latched state until the return switch is manipulated when the operation mode has been switched from the inspection operation to the normal operation by the operation mode selector switch.

公开(公告)号：US20190062110A1

公开(公告)日：2019-02-28

申请号：US16082387

申请日：2016-04-26

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Shingo KONDO ,  Takehiko KUBOTA

IPC: B66B5/00 ,  B66B13/14 ,  B66B13/22

Abstract: An elevator door bypass apparatus, configured to bypass a landing door or a car door at a time of an inspection of an elevator, includes: a door mode selector switch configured to switch a door mode between a normal operation and a bypass operation; a bypass target selector switch configured to switch between bypassing of the landing door and bypassing of the car door; and a bypass relay configured to, in a case that the door mode has been switched to the bypass operation by the door mode selector switch, bypass the landing door when the bypassing of the landing door has been selected by the bypass target selector switch, and bypass the car door when the bypassing of the car door has been selected by the bypass target selector switch.

公开(公告)号：US20240178880A1

公开(公告)日：2024-05-30

申请号：US18284069

申请日：2021-04-01

Applicant: Mitsubishi Electric Corporation

Inventor： Takehiko KUBOTA

IPC: H04B3/06 ,  B66B1/34 ,  H03K3/01

CPC classification number: H04B3/06 ,  B66B1/3461 ,  H03K3/01

Abstract: To provide a transmission system capable of ensuring reliability of signal transmission. The transmission system includes: a remote unit alternately outputting pulse voltage with a positive polarity and pulse voltage with a negative polarity as a signal by causing a first switching element and a second switching element to alternately open and close; and a master unit accepting input of a signal from the remote unit via a cable, and separating the signal into a first signal corresponding to the pulse voltage with the positive polarity and a second signal corresponding to the pulse voltage with the negative polarity.