Hand crank generator

Abstract

A hand crank generator includes a crank, a gear transmission, and a generation motor generator driven by the gear transmission. The crank and the gear transmission are coupled to each other. A clutch gear is coupled between the crank and the gear transmission. The crank is manually driven to further drive the gear transmission, and the generation motor generator is driven to generate electric current through the clutch gear. When the cranking stops, the clutch gear disengages from a motor generator gear disposed on the generation motor generator. A weighted wheel continues to revolve under inertia for a while to drive the generation motor generator to keep on generating electric current, so that the purpose of saving manual efforts can be achieved.

The invention claimed is: 
     
       1. A hand crank generator, comprising: a crank, and a gear transmission, and a generation motor the generator being used to generate electric current and being driven by the gear transmission;
 wherein the crank is coupled to the gear transmission and both of the gear transmission and the generation motor generator are coupled to each other with through a clutch gear, and; 
 wherein the clutch gear engages with the last gear of the gear transmission, or disengages from a generator gear, and wherein both the generator gear and a weighted wheel contribute to powering the generator, the clutch gear remaining connected to a last gear of the gear transmission and, to keep track of limit a deflection angle of the clutch gear, both ends a portion of a deflection shaft of said the clutch gear are disposed in moves within a deflection groove, and a plate is used to connect both shafts of the clutch gear and to enable the clutch gear to engage with or disengage from the generator gear, while permitting the clutch gear to remain engaged to the gear transmission, wherein the deflection groove is situated to enable the clutch gear to remain connected to the last gear of the gear transmission; and 
 wherein after the crank has stopped moving the weighted wheel continues to rotate for a time period and drives only the generator and not the gear transmission. 
 
     
     
       2. The hand crank generator as claimed in  claim 1 , wherein the crank is provided with an arm and a handle, and the handle is mounted to a terminal of the arm. 
     
     
       3. The hand crank generator as claimed in  claim 1 , wherein the generation motor generator is connected to a central shaft, a motor gear is fixed to the central shaft, and the motor gear engages with the clutch gear. 
     
     
       4. The hand crank generator as claimed in  claim 3 , wherein a weighted wheel is fixed to a terminal of the central shaft of the generation motor. 
     
     
       5. The hand crank generator as claimed in  claim 1 , wherein the gear transmission comprises a first transmission gear, a second double gear, a third double gear, and a fourth double gear, both of the first transmission gear and the third double gear are connected to a shaft, both of the second and the fourth double gears are connected to a second shaft, the first transmission gear is fixed to the crank, the first transmission gear engages with a pinion in the second double gear, a gearwheel of the second double gear engages with a pinion in the third double gear, a gearwheel of the third double gear engages with a pinion in the fourth double gear, and a gearwheel of the fourth double gear engages with the clutch gear. 
     
     
       6. The hand crank generator as claimed in of  claim 1 , wherein the gear transmission comprises a plurality of gears, a first gear is connected to a shaft and is fixed to the crank and engages with a pinion of a second gear, the second gear engages the next gear to form a gear transmission, and a gearwheel of the last gear engages with a clutch gear at least a third gear. 
     
     
       7. A hand crank generator comprising a crank, driving a gear transmission, and a generation motor driven by the gear transmission; generator gear on a central shaft connected to a weighted wheel, the generator gear driving the generator used to generate electric current, wherein the crank is coupled to the gear transmission and both of the gear transmission and the generation motor are coupled to each other with engages a clutch gear, having a deflection shaft, and wherein the clutch gear engages with or disengages from the generator gear, and the clutch gear remains connected with a last gear of the gear transmission and, to limit a deflection angle of the clutch gear, a portion of the deflection shaft of the clutch gear moves within a deflection groove to enable the clutch gear to engage with or disengage from the generator gear, while permitting the clutch gear to remain engaged to the gear transmission, wherein the deflection groove is situated to enable the clutch gear to remain connected to the last gear of the gear transmission; and 
 and wherein the gear transmission comprises a first transmission gear, a second double gear, a third double gear, and a fourth double gear, both of the first transmission gear and the third double gear are connected to a shaft, both of the second and the fourth double gears are connected to a second shaft, the first transmission gear is fixed to the crank, the first transmission gear engages with a pinion in the second double gear, a gearwheel of the second double gear engages with a pinion in the third double gear, a gearwheel of the third double gear engages with a pinion in the fourth double gear, and a gearwheel of the fourth double gear engages with the clutch gear. 
 
     
     
       8. The hand crank generator as claimed in of  claim 7 , wherein the crank is provided with an arm and a handle, and the handle is mounted to a terminal of the arm. 
     
     
       9. The hand crank generator as of  claim 7 , wherein the clutch gear engages with the last gear of the gear transmission, and to keep track of a deflection angle of the clutch gear, both ends an end of a the deflection shaft of said the clutch gear are is disposed in a the deflection groove. 
     
     
       10. The hand crank generator as claimed in of  claim 7 , wherein the generation motor generator is connected to a central shaft, a motor generator gear is fixed to the central shaft, and the motor generator gear engages with the clutch gear. 
     
     
       11. The hand crank generator as claimed in  claim 10 , wherein a weighted wheel is fixed to a terminal of the central shaft of the generation motor. 
     
     
       12. The hand crank generator as claimed in  claim 7  of claim 1, wherein the gear transmission comprises a plurality of gears, including a first gear is connected to a shaft and is , fixed to the crank and engages with engaging a pinion of a second gear, the second gear engages the next gear to form a gear transmission, and a gearwheel of the last gear engages with a clutch gear. 
     
     
       13. The hand crank generator of claim 1, further comprising a plate to connect shafts of the clutch gear and of at least another gear of the gear transmission.