Abstract:
The shower head is invented with a hydroelectric generator, a motor and an externally equipped brush. When the user turns on the water tap, water goes through the hydroelectric generator inside the shower head and the motor makes the brush either rotate or vibrate while the electricity is received. Accordingly, the shower head allows the user not to only take a shower but also to have body cleaning and body massage.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a shower head. 
     2. Description of the Prior Art 
     A conventional shower head, as shown in U.S. Pat. No. 6,687,924, is provided with a rotatable brush. Inside the shower head, a water-driven paddle is connected with a gear in order to drive the brush to rotate. Another item equipped in the shower head is a valve which can selectively lead water to drive the paddle wheel so the user can choose whether to use the rotation function. 
     SUMMARY OF THE INVENTION 
     The present invention is mainly to emphasize a shower head is equipped with a rotatable and vibrational brush. 
     To achieve the above purpose, the invention comprises a shower head, a case, a hydroelectric generator, a motor with a power switch, a brush and a transmission mechanism. 
     The case of the shower head is shaped with an inlet, a flow channel and numerous outlets and the flow channel connects the inlet and the outlets, so that the flow channel enables water to flow through. 
     The hydroelectric generator is installed inside the case and the hydroelectric generator will generate electricity as a power supply when water flows through the flow channel. 
     The motor and the power switch are respectively installed inside the case and form a power circuit together with the hydroelectric generator. The power switch is operated to selectively start the circuit that enables the motor to rotate a shaft inside after receiving electricity from the hydroelectric generator. 
     With the transmission mechanism, there is a gearing relation between the brush and the motor, so that the brush can make rotational movement or reciprocating motion along an axial direction with the rotation of the motor. 
     The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment in accordance with the present invention. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a stereogram showing a preferred embodiment of the present invention; 
         FIG. 2  is a partial cross-sectional drawing showing a preferred embodiment of the present invention; 
         FIG. 3  is a side cross-sectional drawing showing a preferred embodiment of the present invention; 
         FIG. 4  is a side cross-sectional drawing showing a preferred embodiment of the present invention when the rotation slide switch is turned on; 
         FIG. 5  is a side cross-sectional drawing showing a preferred embodiment of the present invention when the vibration slide switch is turned on; 
         FIG. 6  is a stereogram showing a preferred embodiment of the present invention with different types of brush. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Please refer to  FIG. 1  to  FIG. 3  for a preferred embodiment of the present invention. The present embodiment of the shower head comprises a case, a hydroelectric generator  2 , a motor  31 , a power switch  32 , a brush  42 , and a transmission mechanism. 
     The case comprises a head portion  11  and a stem portion  12 . The stem portion  12  is fixed on the head portion  11 . The stem portion  12  is provided for users to grab. The case is shaped with an inlet  13 , a flow channel  14  and plural outlets  15 . The inlet  13  is located on a distal end of the stem portion  12  to be assembled with a water hose. The inlet  13  connects with the flow channel  14 , so that water can flow into the flow channel  14  through the inlet  13 . The flow channel  14  is constructed by the head portion  11  and the stem portion  12 . More specifically, the head portion  11  and the stem portion  12  are hollowed and the flow channel  14  passes through the head portion  11  and the stem portion  12 . The outlets  15  are located on the head portion  11  and connect with the channel  14 , so that water can flow out of the flow channel through the outlets  15  to activate hydroelectric generator  2 . 
     The motor  31  and the power switch  32  are respectively fixed inside the head portion  11  and on the stem portion  12 . The motor  31  with a central shaft  311 , the power switch  32  and the hydroelectric generator  2  are series-connected as a power circuit, and the power switch  32  is used for controlling the power circuit. When the power switch  32  is turned on, the power circuit is closed, afterwards the motor  31  receives electricity from the hydroelectric generator  2  so as to cause the central shaft  311  to rotate. When the power switch  32  is turned off, the power circuit is broken. The transmission mechanism comprises a first gear  51 , a second gear  52 , a rotating member  61 , a rotation slide switch  531 , a rotation abutting member  532 , a vibration slide switch  621 , a vibration abutting member  622 , a first elastic member  533 , a second elastic member  623  and a third elastic member  43 . 
     A shaft  41  extends axially from two sides of the second gear  52 . The third elastic member  43  is slidably installed over one end of the shaft  41 . The end of the shaft  41  protrudes through the head portion  11  and connects to the brush  42  with bristles. The shaft  41  installed in the head portion  11  can rotate around its central axis. Further, the third elastic member  43  abutted between the case and the second gear  52  can cause the second gear  52  and the shaft  41  to move linearly, so that the brush  42  and the shaft  41  are driven to make reciprocating motion. 
     A shaft portion extends from one side of the first gear  51  and the other side of the first gear  51  is slidably installed over the central shaft  331  that form a rotational relation. The first gear  51  and its shaft portion move along its axial direction by the first elastic member  533 , which is abutted between the first gear  51  and the motor  31 . The rotation slide switch  531  is installed in a limit groove of the stem portion  12 . The rotation abutting member  532  comprises a first abutting surface  532   a , a second abutting surface  532   b  and a first slant portion  532   c . The first slant portion  532   c  is connected between the first abutting surface  532   a  and the second abutting surface  532   b . One end of the rotation abutting member  532  abuts against the shaft portion of the first gear  51 , and the other end of the rotation abutting member  532  is in a gearing relation with the rotation slide switch  531 . When the rotation slide switch  531  slides toward the stem portion  12 , the first elastic member  533  abutted between the first gear  51  and the motor  31  causes the shaft portion of the first gear  51  to be disengaged from the second abutting surface  532   b  and to abut against the first abutting surface  532   a , so that the first gear  51  is disengaged from the second gear  52 . Thereby, as shown in  FIG. 3 , the brush  42  is unable to rotate with the rotation of the motor  31 , even though the power switch  32  is turned on. When the rotation slide switch  531  slides toward the head portion  11 , the first slant portion  532   c  of the rotation abutting member  532  causes the shaft portion of the first gear  51  to be disengaged from the first abutting surface  532   a  and to abut against the second abutting surface  532   b , so that the first gear  51  is engaged with the second gear  52 . Moreover, as shown in  FIG. 4 , the motor  31  can drive the brush  42  to rotate when the power switch  32  is turned on at the same time. 
     The rotating member  61  is a rotating circular plate. A shaft portion extends from one side of the axle center of the rotating member  61 , and a protruding piece  611  protrudes toward the shaft  41  from the other side of the rotating member. The rotating member  61  is slidably installed over the central shaft  311  so that they form a rotational relation. The rotating member  61  and its shaft portion move along its axial direction by the second elastic member  623 , which is abutted between the rotating member  61  and the motor  31 . The vibration slide switch  621  is installed in another limit groove of the stem portion  12 . The vibration abutting member  622  comprises a third abutting surface  622   a , a forth abutting surface  622   b  and a second slant portion  622   c . The second slant portion  622   c  is connected between the third abutting surface  622   a  and the forth abutting surface  622   b . One end of the vibration abutting member  622  abuts against the shaft portion of the rotating member  61 , and the other end of the vibration abutting member  622  is in a gearing relation with the vibration slide switch  621 . When the vibration slide switch  621  slides toward the stem portion  12 , the second elastic member  623  abutted between the rotating member  61  and the motor  31  causes the shaft portion of the rotating member  61  to be disengaged from the forth abutting surface  622   b  and to abut against the third abutting surface  622   a , so that the protruding piece  611  of the rotating member  61  is disengaged from one end of the shaft  41 . Thereby, as shown in  FIG. 3 , the brush  42  is unable to vibrate with the rotation of the motor  31 , even though the power switch  32  is turned on. When the vibration slide switch  621  slides toward the head portion  11 , the second slant portion  622   c  of the vibration abutting member  622  causes the shaft portion of the rotating member  61  to be disengaged from the third abutting surface  622   a  and to abut against the forth abutting surface  622   b , so that the protruding piece  611  of the rotating member  61  hits the end of the shaft  41 . Moreover, as shown in  FIG. 5 , the motor  31  can drive the brush  42  to vibrate when the power switch  32  is turned on at the same time. 
     Accordingly, the present invention explains that electricity can be generated by the hydroelectric generator  2 , and demonstrates that with the above-mentioned transmission mechanism, the shaft  41  and the brush  42  can rotate and vibrate simultaneously when the rotation slide switch  513  and the vibration slide switch  621  are turned on at the same time. Further, the function of rotation and vibration can be turned off respectively, so that users can choose different function modes. Above-mentioned embodiment of the present invention is to describe the practicality and convenience of the hydroelectric generator, the motor, and the brush inside of the shower head. In other possible embodiments, the transmission mechanism can be omitted and the brush can be directly rotated by a central shaft of a motor, or the brush can be directly vibrated by an eccentric motor. The motor  31  inside of the case can further be installed with a decelerating mechanism, such as a reduction gear group. The motor can also be installed with a rechargeable battery to enhance the power output of the motor. A number of LED bulbs can be installed nearby the outlets  15  and change the colors with different water temperature. The brush  42  installed on the end of the shaft  41  is detachable which the users can change to different types of brushes, as shown in  FIG. 6 .