Vibration Energy Harvest Device

Abstract

The present invention relates to a vibration energy harvest device. In the present invention, the vibration energy harvest device is provided for being used to recycle the mechanical energy and thermal energy generated during the vibration, and effectively to improve the power generation efficiency with newly added hydraulic motor and electricity generating unit. Wherein by using an ameliorating valve module and removing the damping hole in the prior art, no matter the damping oil flows from inner cylinder module through hydraulic motor to outer cylinder module or the contrary direction, the flowing damping oil could avoid the hydraulic motor from reciprocating to improve the power generation efficiency.

We claim: 
     
         1 . A vibration energy harvest device, comprising:
 an outer cylinder module, having a cover on one side itself;   an inner cylinder module, being disposed in the outer cylinder module, wherein there is a first storage space formed between the outer cylinder module and the inner cylinder module, and there is an opening formed on the inner cylinder module;   a valve module, being coaxially connected to the other side of the outer cylinder module and the inner cylinder module;   a moveable piston, being disposed in the inner cylinder module, wherein there is a second storage space formed between the moveable piston and the valve module;   a piston rod module, being disposed in the inner cylinder module, wherein the piston rod module comprises:   a piston rod, being extended through the cover and there is a third storage space formed between the piston rod and the inner cylinder module, wherein the third storage space is connected to the first storage space by the opening; and   a fixed piston, being disposed in the inner cylinder module, and connected to the piston rod, wherein there is an accumulating chamber formed between the moveable piston and the fixed piston;   a hydraulic motor, being coaxially connected to the valve module from outside of the inner cylinder module, and disposed in the outer cylinder module; and   an electricity generating unit, being connected to the hydraulic motor from the outside of the outer cylinder module.   
     
     
         2 . The vibration energy harvest device of  claim 1 , wherein there is anti-vibration oil flowing through in the first storage space, the second storage space, and third storage space. 
     
     
         3 . The vibration energy harvest device of  claim 1 , wherein the accumulating chamber is an enclosure space, and the enclosure space is filled with the group consisting of: air or nitrogen. 
     
     
         4 . The vibration energy harvest device of  claim 1 , wherein when the piston rod module is applied an external thrust, the anti-vibration oil would flow from the valve module, through the hydraulic motor, the first storage space to the third storage space, and when the anti-vibration oil flows through the hydraulic motor, the anti-vibration oil would drive the hydraulic motor to generate electricity for electricity generating unit. 
     
     
         5 . The vibration energy harvest device of  claim 1 , wherein when the piston rod module is applied an external pulling force, the anti-vibration oil would flow from the third storage space, through the first storage space, the valve module, the hydraulic motor, to the second storage space, and when the anti-vibration oil flows through the hydraulic motor, the anti-vibration oil would drive the hydraulic motor to generate electricity for electricity generating unit. 
     
     
         6 . The vibration energy harvest device of  claim 1 , wherein the valve module  3  is a disc structure, and having a plurality of shuttle valves in the internal thereof, wherein the plurality of shuttle valves would adjust the flowing direction of the anti-vibration oil according to the pressure of the first storage space and the second storage space, and keep the rotor of the hydraulic motor rotates in the same direction. 
     
     
         7 . The vibration energy harvest device of  claim 1 , wherein the electricity generating unit is a generator.