Electronic toy capable of automatically opening mouth and sticking tongue out

Abstract

A toy includes a head, a tongue, and a driving unit. The head includes a skull, an upper jaw fixed to the skull, and a lower jaw rotatably coupled to the skull and facing the upper jaw to cooperatively define an oral cavity. The tongue received in the oral cavity includes a tongue tip and a guiding rod assembly. The driving unit includes a driving shaft fixed to the skull, a rotatable disk rotatably coupled to the driving shaft, a first lever pivotally coupled between the rotatable disk and the lower jaw, a second lever pivotally coupled between the rotatable disk and the guiding rod assembly and a motor. One end of the guiding rod assembly is received in the tongue. The motor drives the rotatable disk to rotate such that the lower jaw rotates away from the upper jaw and the tongue tip protrudes out from the oral cavity.

1 . An electronic toy comprising:
 a head comprising a skull, an upper jaw fixed to the skull, and a lower jaw rotatably coupled to the skull in a manner such that the upper jaw and the lower jaw face each other to cooperatively define an oral cavity;   a tongue received in the oral cavity and comprising a tongue tip and a guiding rod assembly; and   a driving unit comprising a driving shaft, a rotatable disk, a first lever, a second lever, and a motor, the driving shaft fixed to the skull, the rotatable disk rotatably coupled to the driving shaft, the first lever pivotally coupled between the rotatable disk and the lower jaw, the second lever pivotally coupled between the rotatable disk and the guiding rod assembly, one end of the guiding rod assembly received in the tongue, and the motor capable of driving the rotatable disk to rotate such that the lower jaw rotates away from the upper jaw and the tongue tip protrudes out from the oral cavity.   
   
   
       2 . The electronic toy of  claim 1 , further comprising a jaw shaft fixed in the skull, the lower jaw rotatably coupled to the skull via the jaw shaft. 
   
   
       3 . The electronic toy of  claim 1 , further comprising a detecting unit and a controlling unit electrically connected to the detecting unit, the detecting unit configured for detecting a rotation angle of the rotatable disk, and the controlling unit configured for storing a designated angle, comparing the detected rotation angle of the rotatable disk with the designated angle, and controlling the motor according to a result of the comparison. 
   
   
       4 . The electronic toy of  claim 1 , wherein the lower jaw defines a guiding groove, the guiding rod assembly comprises a first rod and a second rod, one end of the first rod and one end of the second rod are both received in the tongue and are combined together to cooperatively form an abutting end, the other end of the first rod is received in the guiding groove, and the other end of the second rod is pivotally coupled to the second lever. 
   
   
       5 . The electronic toy of  claim 2 , wherein the driving unit further comprises a worm wheel, a first slave gear, a first shaft, a second slave gear, and a third slave gear, the worm wheel is coaxially assembled with a rotating shaft of the motor, the first slave gear is engaged with the worm wheel, the first shaft is fixed to the skull, the second slave gear is rotatably coupled to the first shaft, and the third slave gear is rotatably coupled to the driving shaft and fixed on the rotatable disk and engaged with the second slave gear. 
   
   
       6 . The electronic toy of  claim 2 , wherein the driving unit further comprises a worm wheel, a first slave gear, a second slave gear, a first shaft, a clutch gear, a first matching gear, a second matching gear, an elastic member, an electromagnetic coil, a second shaft, and a fixed gear, the worm is coaxially assembled with a rotating shaft of the motor, the first slave gear is engaged with the worm wheel, the first shaft is fixed to the skull and rotatably extends through the second matching gear, the elastic member, the clutch gear and the first matching gear in that order, the clutch gear is moveably engagable with one of the first matching gear and the second matching gear at any one time, the first slave gear is engaged with the clutch gear, the electromagnetic coil is fixed on the second matching gear, the second shaft is fixed to a neck portion of the electronic toy, the fixed gear is fixed to the second shaft and engaged with the second matching gear, the first matching gear is engaged with the second slave gear, and the second slave gear is rotatably coupled to the driving shaft and fixed on the rotatable disk. 
   
   
       7 . The electronic toy of  claim 1 , wherein the elastic member is a coil spring.