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Patent Searching and Data


Title:
ELEVATOR
Document Type and Number:
Japanese Patent JP2001341978
Kind Code:
A
Abstract:

To provide an elevator for preventing breakdown of an electronic part constituting a power circuit for supplying a power source to a lifting motor by effectively treating regenerative power generated when rotating the lifting motor in the lowering direction and capable of more properly maintaining a lowering speed than in the conventional one without depending on the body weight of a person to be cared.

A regenerative braking circuit part 8 having a power source interlocking switch turned on when a motor power circuit 10 for supplying electric power to the lifting motor 2 is in an OFF state and turned off in an ON state, is connected to both ends of the lifting motor 2 lifted and driven by a motor driving circuit 4, and this regenerative braking circuit part 8 performs regenerative braking by a regenerative current carried when the motor power ciruit 10 is in an OFF state and the lifting motor 2 is rotated in the lowering direction.


Inventors:
SHIKATA NORIYUKI
OKAMURA YUKIHIKO
MUROGAKI SHIGEMICHI
ENOSONO RIYOUJI
Application Number:
JP2000162877A
Publication Date:
December 11, 2001
Filing Date:
May 31, 2000
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
B66C13/28; B66D1/54; H02P3/14; (IPC1-7): B66C13/28; B66D1/54; H02P3/14
Attorney, Agent or Firm:
Junji Ando (1 person outside)