Patent Publication Number: US-2003227224-A1

Title: Wheel generator structure

Description:
FIELD OF THE INVENTION  
       [0001] This invention relates to a wheel generator structure, and more particularly, to a generator maintains a constant output of electricity.  
       BACKGROUND OF THE INVENTION  
       [0002] Some bicycles, tricycles, roller skates on the market are equipped with electricity to activate a light or a sound device as a decorative ornament. However, due to the size of the wheels, the electricity they generated is relatively weak to drive the device, and therefore can hardly attract consumers&#39; attention.  
       [0003] In view of this, the inventor has derived the present invention to improve the shortcomings.  
       SUMMARY OF THE INVENTION  
       [0004] It is the primary object of the present invention to provide a wheel generator structure, which uses gear teeth differential to maintain regular spin speed of an inductive coil with respect to a magnet to produce constant electricity.  
       [0005] It is another object of the present invention to provide a wheel generator structure, which generates light and sound effects to attract consumers.  
       [0006] It is a further object of the present invention to provide a wheel generator structure, which is applicable to a bicycle, a tricycle, a roller skate or any other toddler&#39;s vehicle. 
     
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
     [0007]FIG. 1 is a partial view of a scooter incorporated with the present invention;  
     [0008]FIG. 2 is an enlarged view of FIG. 1, partially sectioned;  
     [0009]FIG. 3 is an enlarged view of a second embodiment of the present invention; and  
     [0010]FIG. 4 is a view of the present invention, which is applicable to be incorporated on to a bicycle, a tricycle, or a roller skate.  
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
     [0011] The wheel generator structure of the present invention comprises a body  1 , a generator  2  and loads  3 .  
     [0012] The body  1  may be a skateboard with an axle  11  thereon, which is covered with a sleeve  12 . Both ends of the axle  11  are connected to wheels  13 . One of wheels  13  has a large gear  14  connected at the inside thereof, and the axle  11  is secured to the bottom end of a front support  15 .  
     [0013] The generator  2  is secured on the sleeve  12 , having a support frame  21  secured on the sleeve  12  with a spindle  22  extending from inside of the inner portion outwardly. One end of the spindle  22  is pivoted with an idle gear  23  by a pair of retaining rings  231 . The idle gear  23  meshes with the large gear  14  and is covered by a sleeve  24  which has a magnet  25  at the inner end, and the spindle  22  has an inductive coil  26  enclosed by the magnet  25 , in such a manner that the inductive coil  26  spins within the magnet. The inductive coil  26  is connected with electric wires  261 .  
     [0014] The load  3 , which may be a LED or a sounding device, is mounted on the body  1  and activated by the generator  2  through electric wires  261 .  
     [0015] To operate the present invention, as shown in FIG. 2, when rolling the wheels  13 , the large gear  14  is driven to spin, which drives the idle gear  23  to spin simultaneously, this brings the magnet  25  in the sleeve  24  to spin with respect to the inductive coil  26  to generate electricity, which then output to the load  3  through the electric wires  261 .  
     [0016] Due to the differential ratio of the teeth between the large gear  14  and the idle gear  23 , even the wheel rolling in a slow speed, the idle gear  23  still maintains a regular speed through the large gear  14 , and therefore, outputs a constant and stable electricity.  
     [0017] Another embodiment of the present invention is shown as in FIG. 3, which extends the support frame  21  of the generator  2  to the front support  15  of the body  1  to provide a better supporting effect.  
     [0018] This design is applicable to be applied on a roller skate, a tricycle, a bicycle or a skateboard, anything with wheels, as shown in FIG. 4. A roller skate  4  has a pair of wheels  42  secured on respect sides of an axle  41 , a generator  44  is secured on the axle  41  with a spindle  45  extending outwardly, and one end of the spindle  45  is secured with an idle gear  46  by a pair of retaining rings  451 . One of the wheels  42  has a large gear  43  which meshes with the idle gear  46 . The idle gear  46  has a sleeve  461  which comprises a magnet  47  secured therein. The spindle  45  has an inductive coil  48  corresponding to and enclosed in the magnet  47  and the inductive coil  48  is connected with electric wires  481 . The connection is in such a manner, that when the magnet  47  spins, the magnetic field generates electricity, which then output through the electric wires  481  to a load  49 .