Title:
BRAKE DEVICE OF HOIST FOR ELEVATOR
Document Type and Number:
WIPO Patent Application WO/2007/108112
Kind Code:
A1
Abstract:
A brake device of a hoist for an elevator, having a brake drum (1) formed on a rotating drive
body for lifting and lowering the elevator, a stationary core (2) placed at the
center of the brake drum (1) and having an electromagnetic coil (2a) and an attraction
surface (2b) that are provided on each of the opposite sides of the core, movable
cores (4) placed facing the attraction surfaces (2b) on the opposite sides of
the stationary core (2), urged by urging springs (3) in the direction to the brake
drum (1), attracted to the stationary core (2) by electromagnetic force of the
electromagnetic coils (2a), and brake shoes (5) placed on the movable cores (4)
so as to face the brake drum (1), and engagement means (6, 7) provided on the attraction
surfaces (2b) and on the movable cores (4) facing the attraction surfaces (2b)
of the stationary core (2), engaged with each other, and capable of moving the
movable cores (4) along the rotation shaft of the brake drum (1) with the weight
of the movable cores (4) supported by the stationary cores (2).
Inventors:
MATSUMOTO HIDEYUKI (JP)
Application Number:
PCT/JP2006/305677
Publication Date:
September 27, 2007
Filing Date:
March 22, 2006
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
MATSUMOTO HIDEYUKI (JP)
MATSUMOTO HIDEYUKI (JP)
International Classes:
B66B11/08
Domestic Patent References:
| WO2004036080A1 | 2004-04-29 |
Foreign References:
| JP2002242961A | 2002-08-28 | |||
| JPH0286983U | 1990-07-10 | |||
| JPH08208142A | 1996-08-13 | |||
| JP2005178969A | 2005-07-07 | |||
| JP2004189418A | 2004-07-08 |
Attorney, Agent or Firm:
TAKADA, Mamoru et al. (Takahashi & Partners 5th Floor, Intec 88 Bldg., 20, Araki-ch, Shinjuku-ku Tokyo, JP)
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