Electromagnetic doll's eye

Abstract

The invention concerns a doll's, toy baby's or teddy bear's eye whereof the opening and closing are controlled by an electromagnet

1 . A teddy bear's, doll's or toy baby's eye, which can rotate, open and close at will, 
 the opening and closing of which are controlled electrically by means of an electromagnet,    the moveable ocular globe ( 5 ) of which includes at least one magnet and in that the ocular cavity includes at least one coil ( 6 ) and at least one core made of hard iron ( 4 ), making an electromagnet,    characterized in that it undergoes a travel of about 90° in one or other direction owing to the effect of a current pulse flowing through the coil ( 6 ), and in that each extreme position is stable without any current flowing through the coil, owing to static magnetic attraction.    
     
     
         2 . The eye as claimed in  claim 1 , characterized in that the magnet ( 3 ) is of cylindrical shape, coaxial with the eye, and has four poles uniformly distributed around the turn.  
     
     
         3 . The eye as claimed in  claim 2 , characterized in that the coil ( 6 ) and the hard iron core ( 4 ) lies in the plane of the magnet ( 3 ) and in that the core confines the magnetic flux of the magnet.  
     
     
         4 . The eye as claimed in  claim 1 , characterized in that it includes two magnets ( 3 ) and two coils ( 6 ) which are provided with a core, these being distributed in such a way that the end-of-angular-travel limit stops are formed by the contact of a magnet on a core ( 4 ).