Abstract: A switch actuator for toys comprising two plates 1 which are joined together at one end thereof with a hinge. One of the two plates 1 has an electric circuit 2 to generate electric signals to produce sounds and/or other output. The other plate 1 has a contact switch 3 to energize the electric circuit 2. Either or both of the two plates 1 have a projection 5 or a catch 6. An elastic device or a pair of magnets 4 are interposed between the two plates 1 to keep them apart from each other. The switch actuator thus arranged is simple and solid and prevents accidental completion of the electric circuit that sometimes occur during the out-of-service periods.