Title:
BRAKE DEVICE FOR ELEVATOR
Document Type and Number:
WIPO Patent Application WO/2005/087643
Kind Code:
A1
Abstract:
A brake device for an elevator, where energy required for applying and releasing a brake is reduced. The braking device has a movable plunger (5), braking mechanisms (1-4, 6, 7), a first drive mechanism (10), and a second drive mechanism (20). The braking mechanisms (1-4, 6, 7) are connected to one end of the movable plunger and are switched between a braked state and a released state by the axial movement of the movable plunger. The first drive mechanism (10) uses mechanical or magnetic power and is adapted to reverse the movable plunger in the middle of an axial movable range for the switching between the braked state and the released state to press the movable plunger to the braked side or the released side, holding it in position. The second drive mechanism (20) uses magnetic power and is adapted to drive the movable plunger against a pressing force of the first drive mechanism in order to switch the movable plunger between the braked state and the released state, the movable plunger being driven from the braked side or the released side to a reversing position in the middle of the movable range.
Inventors:
KIGAWA HIROSHI (JP)
UEDA TAKAHARU (JP)
OKAMOTO KENICHI (JP)
UEDA TAKAHARU (JP)
OKAMOTO KENICHI (JP)
Application Number:
PCT/JP2005/004073
Publication Date:
September 22, 2005
Filing Date:
March 09, 2005
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
KIGAWA HIROSHI (JP)
UEDA TAKAHARU (JP)
OKAMOTO KENICHI (JP)
KIGAWA HIROSHI (JP)
UEDA TAKAHARU (JP)
OKAMOTO KENICHI (JP)
International Classes:
B66B5/18; B66B11/08; (IPC1-7): B66B5/18; B66B11/08
Foreign References:
| JP2001019292A | 2001-01-23 | |||
| JPH05124777A | 1993-05-21 | |||
| JPH09326222A | 1997-12-16 | |||
| JP2002343199A | 2002-11-29 | |||
| JPS5829754U | 1983-02-26 |
Attorney, Agent or Firm:
Soga, Michiteru (8th Floor Kokusai Building, 1-1, Marunouchi 3-chom, Chiyoda-ku Tokyo 05, JP)
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