(19)
(11) EP 0 347 393 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.08.1991 Bulletin 1991/33

(43) Date of publication A2:
20.12.1989 Bulletin 1989/51

(21) Application number: 89830268.2

(22) Date of filing: 16.06.1989
(51) International Patent Classification (IPC)4D06F 37/30
(84) Designated Contracting States:
DE ES FR GB

(30) Priority: 17.06.1988 IT 2102388

(71) Applicant: SMEG S.p.A.
Guastalla (Reggio Emilia) (IT)

(72) Inventor:
  • Bertazzoni, Roberto
    Guastalla (Reggio Emilia) (IT)

(74) Representative: Adorno, Silvano et al
c/o SOCIETA' ITALIANA BREVETTI S.p.A. Via Carducci, 8
20123 Milano
20123 Milano (IT)


(56) References cited: : 
   
       


    (54) Automatic locking device to stop the drum of washing machines at a given position


    (57) An automatic locking device is described to stop the drum of a washing machine at a given position. As a last operative step of the washing cycle, before cutting off electric power from every part of the machine, the programming device causes an electric motor with reduction gear (2) to be operated driving a shaped wheel (3) with a cam (3a) for engagement with a lever (4) having at one end a roller (5) which is adapted to partially fit into a recess (15) formed on the periphery of the drum driving pulley (1). Suitable microswitches (6,7,8), being responsive to the relative position of the said cam wheel (3) and lever (4) sequentially switch off the geared motor (2) and actuate again the main motor (13) for rotating the drum, then cause it to be finally switched off with the drum being locked and the electric lock (12,12') to be actuated for opening, while upon starting a new cycle the geared motor (2) is operated again to unlock the drum by lifting the lever (4) with roller (5) thus allowing the usual operation of the machine.







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