Position controlling mechanism and apparatus for controlling eye movement using the same

Abstract

A position controlling mechanism is provided in the present invention, which comprises a plurality of bar linkage with multiple degrees of freedom (DOF) for controlling a specific position of the bar linkage to move arbitrarily on a curved surface according the input movement of the bar linkage of the position controlling mechanism. Meanwhile, an apparatus for controlling eye movement is also provided by combing the position controlling mechanism and an eyeball assembly arranged on the specific position of the bar linkage. By means of the position controlling mechanism, the eyeball assembly can be moved toward any direction so as to increase the diversity of the facial expression of a doll.

1 . A position controlling mechanism, comprising:
 a pair of input rods, each connected to a driving unit by an end thereof for receiving a power output of the driving unit to move accordingly;   a first output rod, coupled to one of the two input rods by an end thereof; and   a second output rod, connected to the first output rod by an end thereof while connecting to another input rod not coupled to the first output rod by another end thereof.   
   
   
       2 . The position controlling mechanism of  claim 1 , wherein the extending of each input rod is defined by a curvature. 
   
   
       3 . The position controlling mechanism of  claim 1 , wherein the extending of the first output rod is defined by a curvature. 
   
   
       4 . The position controlling mechanism of  claim 1 , wherein the extending of the second output rod is defined by a curvature. 
   
   
       5 . The position controlling mechanism of  claim 1 , wherein the two ends of the two input rods connecting to the driving unit are jointed by a coupling for aligning the two ends on a same axis. 
   
   
       6 . The position controlling mechanism of  claim 1 , wherein the end of one of the two input rod that is connected to the driving unit is bored through by a driving shaft used for driving anther input rod, and thus the two ends of the two input rods connecting to the driving unit are aligned on a same axis. 
   
   
       7 . The position controlling mechanism of  claim 1 , wherein the two ends of the two input rods connecting to the driving unit are spaced by a distance. 
   
   
       8 . The position controlling mechanism of  claim 1 , wherein the driving unit is composed of two driving motors; and respectively the driving shafts of the two driving motors are axially connected to the two ends of the of the two input rods that are used for connecting to the driving unit. 
   
   
       9 . The position controlling mechanism of  claim 1 , wherein the driving unit is further comprised of:
 a pair of driving motors, respectively arranged in correspondence to the two ends of the of the two input rods that are used for connecting to the driving unit; and   a pair of driving belts, each having an end coupled to one corresponding driving motor selected from the two driving motors while coupling another end thereof to one corresponding end of the two ends of the of the two input rods that are used for connecting to the driving unit, for transmitting power of the two driving motors to the two input rods in respective.   
   
   
       10 . The position controlling mechanism of  claim 1 , wherein the driving unit further comprises:
 a pair of driving motors, respectively arranged in correspondence to the two ends of the of the two input rods that are used for connecting to the driving unit; and   a pair of gear transmission units, each coupled to one corresponding driving motor selected from the two driving motors and one corresponding end of the two ends of the of the two input rods that are used for connecting to the driving unit.   
   
   
       11 . The position controlling mechanism of  claim 1 , further comprising:
 a platform, mounted at a position corresponding to the connection of the first and the second output rods so as to be used for connecting to an application component.   
   
   
       12 . The position controlling mechanism of  claim 11 , wherein the application component is a device selected from the group consisting of an illuminating device and an imaging device. 
   
   
       13 . An eye movement control apparatus, comprising:
 a pair of input rods, each coupled to a driving unit by an end thereof for receiving a power output of the driving unit to move accordingly;   a first output rod, coupled to one of the two input rods by an end thereof;   a second output rod, connected to the first output rod by an end thereof while connecting to another input rod not coupled to the first output rod by another end thereof; and   an eyeball assembly, mounted at a position corresponding to the connection of the first and the second output rods in a manner that that the eyeball assembly is driven to move on a curved surface in respond to the moving of the paired input rods.   
   
   
       14 . The eye movement control apparatus of  claim 13 , wherein the extending of each input rod is defined by a curvature. 
   
   
       15 . The eye movement control apparatus of  claim 13 , wherein the extending of the first output rod is defined by a curvature. 
   
   
       16 . The eye movement control apparatus of  claim 13 , wherein the extending of the second output rod is defined by a curvature. 
   
   
       17 . The eye movement control apparatus of  claim 13 , wherein the two ends of the two input rods connecting to the driving unit are jointed by a coupling for aligning the two ends on a same axis. 
   
   
       18 . The eye movement control apparatus of  claim 13 , wherein the end of one of the two input rod that is connected to the driving unit is bored through by a driving shaft used for driving anther input rod, and thus the two ends of the two input rods connecting to the driving unit are aligned on a same axis. 
   
   
       19 . The eye movement control apparatus of  claim 13 , wherein the driving unit is composed of two driving motors; and respectively the driving shafts of the two driving motors are axially connected to the two ends of the of the two input rods that are used for connecting to the driving unit. 
   
   
       20 . The eye movement control apparatus of  claim 13 , wherein the driving unit further comprises:
 a pair of driving motors, respectively arranged in correspondence to the two ends of the of the two input rods that are used for connecting to the driving unit; and   a pair of driving belts, each having an end coupled to one corresponding driving motor selected from the two driving motors while coupling another end thereof to one corresponding end of the two ends of the of the two input rods that are used for connecting to the driving unit, for transmitting power of the two driving motors to the two input rods in respective.   
   
   
       21 . The eye movement control apparatus of  claim 13 , wherein the two ends of the two input rods connecting to the driving unit are spaced by a distance. 
   
   
       22 . The eye movement control apparatus of  claim 13 , wherein the driving unit further comprises:
 a pair of driving motors, respectively arranged in correspondence to the two ends of the of the two input rods that are used for connecting to the driving unit; and   a pair of gear transmission units, each coupled to one corresponding driving motor selected from the two driving motors and one corresponding end of the two ends of the of the two input rods that are used for connecting to the driving unit.