EP 1431226 A1 20040623 - BRAKE CONTROLLER OF ELEVATOR
Title (en)
BRAKE CONTROLLER OF ELEVATOR
Title (de)
BREMSSTEUERUNG FÜR AUFZUG
Title (fr)
UNITE DE COMMANDE DE FREIN D'ASCENSEUR
Publication
Application
Priority
JP 0108510 W 20010928
Abstract (en)
When braking force is produced in a brake of an elevator in which an armature (17) is attracted against a spring (7) by means of energization of a brake coil (16), and, as a result of attraction of the armature, a brake shoe (9) remaining in pressed contact with a brake wheel (6) is released from the pressed contact, first brake coil control means (38) decreases energization of the brake coil (16) such that the armature (17) is released from an attracted state. When the rate of decrease in a brake coil current (Ib) has been slowed to a level below a predetermined value or the brake coil current (Ib) has turned into an increase during the course of the first brake coil control means (38) releasing the armature (17) from an attracted state, the brake coil (16) is energized within a range in which the armature (17) is not again attracted, by means of effecting a switch to the second brake coil control means (39), thereby lessening impact sound which arises between the brake shoe (9) and the brake wheel (6) by means of the force of the spring (7). <IMAGE>
IPC 1-7
IPC 8 full level
B66B 1/32 (2006.01); F16D 65/14 (2006.01); F16D 65/22 (2006.01); H01F 7/06 (2006.01); H01F 7/18 (2006.01); F16D 121/16 (2012.01); F16D 121/22 (2012.01); F16D 127/02 (2012.01); F16D 129/06 (2012.01)
CPC (source: EP KR)
B66B 1/32 (2013.01 - EP KR); H01F 7/1805 (2013.01 - EP)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1431226 A1 20040623; EP 1431226 A4 20090812; EP 1431226 B1 20100707; CN 1229273 C 20051130; CN 1478050 A 20040225; DE 60142530 D1 20100819; JP 4830257 B2 20111207; JP WO2003031309 A1 20050120; KR 100483661 B1 20050419; KR 20030051881 A 20030625; WO 03031309 A1 20030417
DOCDB simple family (application)
EP 01972563 A 20010928; CN 01819615 A 20010928; DE 60142530 T 20010928; JP 0108510 W 20010928; JP 2003534301 A 20010928; KR 20037007099 A 20030527