Abstract:
A rotary massaging stick having rotary massaging ball assemblies rotatable in reversed directions by a motor through a transmission gear train for stimulating the G point in the vagina of a woman to cause the woman to reach the climate of sexual excitement.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates generally to a rotary massaging stick and more particularly, to such a rotary massaging stick, which is practical for simulating the G point in the vagina of a woman to reach the climate of sexual excitement. 
     2. Description of the Related Art 
     Various sex toys have been disclosed for helping people to reach the climate of sexual excitement, and have appeared on the market. A conventional rotary massaging stick for this purpose has rotary massaging ball assemblies that can be rotated in one specific direction to stimulate the vagina. However, a sex toy of this design is less attractive to consumers because the rotary massaging ball assemblies can be rotated in one specific direction only. 
     SUMMARY OF THE INVENTION 
     The present invention has been accomplished under the circumstances in view. It is the main object of the present invention to provide a rotary massaging stick, which drives rotary massaging ball assemblies to rotate in reversed directions to stimulate the G point in the vagina of a woman, causing the woman to reach the climate of sexual excitement. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an exploded view of a transmission mechanism for a rotary massaging stick according to the present invention. 
         FIG. 2  is a side view showing the transmission mechanism assembled according to the present invention. 
         FIG. 3  is a schematic drawing of the present invention showing the rotary massaging stick in action. 
         FIG. 4  is an exploded view of one massaging ball unit of the rotary massaging stick according to the present invention. 
         FIG. 5  is an exploded view showing an alternate form of the massaging ball unit according to the present invention. 
         FIG. 5A  is an exploded view showing another alternate form of the massaging ball unit according to the present invention. 
         FIG. 6  is a schematic drawing showing the sleeve of the transmission mechanism set for clockwise rotation. 
         FIG. 7  is a schematic drawing showing the sleeve of the transmission mechanism set for counter-clockwise rotation. 
         FIG. 8  is a schematic drawing of the present invention, showing two massaging ball assemblies rotated in reversed directions. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     Referring to  FIGS. 1˜3 , a rotary massaging stick is shown comprising a transmission mechanism  1000 . The transmission mechanism  1000  comprises a motor  10 , a plurality of circular mounting plates  40  fastened to the housing of the motor  10  at different elevations with spacer tubes  50  and screw bolts  60 , a stepped gear A  102  meshed with the pinion  101  at the output shaft of the motor  10 , a stepped gear B  103  fixedly connected in parallel to the stepped gear A  102 , a stepped gear C  104  meshed with the stepped gear A  102  and the stepped gear B  103 , a sleeve  20  rotatably mounted in one circular mounting plate  40  at the center, a first transmission gear  20   a  fixedly mounted on the sleeve  20  and meshed with the stepped gear B  103 , a transmission shaft  30  inserted through the sleeve  20 , a second transmission gear  30   a  fixedly mounted on the bottom end of the transmission shaft  30 , and a stepped gear D  105  meshed between the second transmission gear  30   a  and the stepped gear B  103 . Massaging ball assemblies  7000  and a flexible conical cap  1200  are fastened to the sleeve  20  and the transmission shaft  30  (see  FIG. 3 ). 
     Referring to  FIGS. 4 ,  5 A, and  5 B, each massaging ball unit  7000  is comprised of a holder base  70 , two locating devices  80 , and a plurality of massaging balls  90 . The holder base  70  comprises a flat circular plate member  701 , a center bar  702  extended through the center of the circular plate member  701 , two female screws  702   c  arranged in parallel to the center bar  702  at two sides, a plurality of pins  703  symmetrically perpendicularly provided at the top and bottom sides of the flat circular plate member  701  and equiangularly spaced around the border of the flat circular plate member  701  for supporting the massaging balls  90 . The center bar  702  comprises a center axle hole  702   b  axially extended through the two distal ends, and two peripherally serrated engagement blocks  702   a  fixedly provided at the two distal ends around the center axle hole  702   b . The locating devices  80  each comprise a flat circular plate member  801  fastened to one end of each of the female screws  702   c  by screws  91  and having a center coupling hole  802  coupled to one peripherally serrated engagement block  702   a , and a plurality of pins  803  perpendicularly extended from the flat circular plate member  801  around the border and respectively inserted into the massaging balls  90  to hold the massaging balls  90  on the pins  703  of the holder base  70 . 
     Referring to  FIG. 3  again, the transmission mechanism  1000  is mounted in a controller  1100 , which is orthopedically engineered for the holding of the hand. 
     Referring to  FIGS. 6˜8  and  FIG. 2  again, when in use, operate the controller  1100  to start the motor  10 , thereby causing the pinion  101  to rotate the gears  102 ˜ 105 , and therefore the first transmission gear  20   a  and the second transmission gear  30   a  are driven to rotate the sleeve  20  and the transmission shaft  30  in reversed directions. During respective rotary motion of the sleeve  20  and the transmission shaft  30 , the massaging ball assemblies  7000  and the flexible conical cap  1200  are respectively rotated with the sleeve  20  and the transmission shaft  30  to provide a massaging effect.