Abstract:
The present invention is a pump. It has few components. It has a simple producing procedure and a simple assembling procedure. It can reduce the noise occurred when a pump vibrates. And it runs with saved energy.

Description:
FIELD OF THE INVENTION 
       [0001]    The present invention relates to a pump, more particularly, relates to lessening a component number of the pump; simplifying a fabrication procedure and an assembly procedure; and reducing a friction noise from vibration. 
       DESCRIPTION OF THE RELATED ART 
       [0002]    A prior art, “A radial-sliding-and-pushing pump”, is proclaimed in Taiwan. The prior art comprises a base, a rotor, a sliding block and a towing member. 
         [0003]    Therein, the base is formed with a disk having a surrounding wall at its rim. The base has two sets of connecting pipes and each set has two connecting pipes located at two radial ends separately. Two inward arc protrusions are located on inner surface of the surrounding wall at two radial ends separately. Each protrusion is located between two neighboring connecting pipes at each one of the radial ends. And a shaft of the disk is penetrated through an axis hole. 
         [0004]    The rotor is movably set in the surrounding wall. The outer surface of the rotor is stuck to an arc surface of the protrusion. Thus, a pair of flow paths is formed between the surrounding wall and the rotor and is connected with the connecting pipes. An axis rod on an end surface of the rotor penetrates out the base through the axis hole for an outside driver to rotate the rotor. A sliding channel at the opposite end surface of the rotor is set along an axis radial and is penetrated out the outside rim of the rotor at two ends of the sliding channel. 
         [0005]    The sliding block is embedded in the sliding channel with a length shorter than the sliding channel. The part of the sliding channel which extends out of the sliding block forms a transferring space to connect to the flow path. Two ends of the sliding block are closely contacted with an inner surface of the protrusion. And the middle section of the sliding block is concaved to obtain a slot. 
         [0006]    The towing member is embedded in the slot nestling to the slot wall. The towing member is inserted with a positioning rod at the center. And a shaft of the positioning rod is parallel to a shaft of the rotor. The shaft of the positioning rod is located on the line of two protrusions and is deviated from the shaft of the rotor. The sliding block is towed by the towing member to reciprocate a long the sliding channel. Thus, the transferring space is used to transfer fluid. 
         [0007]    The cover unit is covered on the top of the surrounding wall to seal the flow path. And the positioning rod is fixed with the cover unit to position the shaft of the towing member. 
         [0008]    The prior art uses a towing member to reciprocate a sliding block following the rotation of the rotor along a radial path so that fluid in the fluid channel are pumped with sucking and pushing motions. However, the prior art has a complex structure with a running gear (a motor) at the outside. And a big noise is produced when using the running gear. Hence, the prior art does not fulfill users&#39; requests on actual use. 
       SUMMARY OF THE INVENTION 
       [0009]    The main purpose of the present invention is to lessening a component number of a pump; to simplify fabrication and assembly procedures; and to reduce friction noise of vibration. 
         [0010]    To achieve the above purpose, the present invention is a pumping device, comprising a base, a rotating unit, a driving unit and a cover unit, where the base has a containing space; the containing space has a first indentation and a second indentation having a hole separately; the rotating unit is movably set in the containing space; the rotating unit has a channel on an end surface; the channel has a first opening and a second opening corresponding to the first indentation and the second indentation respectively; the driving unit is set in the channel of the rotating unit; the driving unit has a long hole; the cover unit is covered on the containing space; and the cover unit has a shaft on an end surface to movably penetrating through the long hole of the driving unit. Accordingly, a novel pumping device is obtained. 
     
     
       BRIEF DESCRIPTIONS OF THE DRAWINGS 
         [0011]    The present invention will be better understood from the following detailed description of the preferred embodiment according to the present invention, taken in con junction with the accompanying drawings, in which 
           [0012]      FIG. 1  is the perspective view showing the preferred embodiment according to the present invention; 
           [0013]      FIG. 2  is the explosive view; 
           [0014]      FIG. 3  is the cross-sectional view; 
           [0015]      FIG. 4  is the view showing the state of use; 
           [0016]      FIG. 5  is the cross-sectional view at the first direction showing the state of use; and 
           [0017]      FIG. 6A  to  FIG. 6D  are the cross-sectional views at the second direction. 
       
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
       [0018]    The following description of the preferred embodiment is provided to understand the features and the structures of the present invention. 
         [0019]    Please refer to  FIG. 1  to  FIG. 3 , which are a perspective view, an explosive view and a cross-sectional view showing a preferred embodiment according to the present invention. As shown in the figures, the present invention is a pumping device, comprising a base  1 , a rotating unit  2 , a driving unit  3  and a cover unit  4 , where components of the pumping device are few in number; a fabrication procedure and an assembly procedure are simplified; and a friction noise from vibration is reduced. 
         [0020]    The base  1  has a containing space  11 ; a first indentation  12  and a second indentation  13  are set at the side surface of the base  1 ; and, the first indentation  12  and the second indentation  13  are vented with a first hole  121  and a second hole  131  respectively. 
         [0021]    The rotating unit  2  is movably set in the containing space  11  of the base  1 ; the rotating unit  2  has a motor  21 ; the motor  21  is connected with a rotor  22 ; the rotor  22  has a channel  221  on a surface; and, the channel  221  has a first opening  222  and a second opening  223  separately at two ends of the channel  221 . The motor  21  can further connect to the rotating unit  2  from outside of the rotating unit  2 . 
         [0022]    The driving unit  3  is set in the channel  221  of the rotating unit  2  and has a long hole  31 . 
         [0023]    The cover unit  4  is coordinated with a fixing member  41  to be fixed on an end surface of the base for covering the containing space  11  of the base  1 ; the cover unit  4  has a shaft  42  on an end surface of the cover unit  4  movably penetrating through the long hole  31  of the driving unit  3 ; and, the shaft  42  has a bearing  43  for lubrication as required. Thus a novel pumping device is obtained. 
         [0024]    Please refer to  FIG. 4 ,  FIG. 5  and  FIG. 6A  to  FIG. 6D , which are a view showing a state of use and cross-sectional views at a first direction and a second direction showing the state of use. As shown in the figures, when using the present invention, a first pipe  14  and a second pipe  15  are connected to a first hole  121  of a first indentation  12  and a second hole  131  of a second indentation  13  respectively. The first pipe  14  is used as an input terminal; and the second pipe  15  is used as an output terminal. (It is also all right to use the first pipe  14  as an output terminal and the second pipe  15  as an input terminal by reversing motor rotating direction.) The input and output terminals input and output a work fluid or gas; and are connected with an outside device. Thus, the present invention is used in a heat dissipation system or simply a pump which requires to transfer liquid or gas. An outside power is applied to a motor  21  of a rotating unit  2  to move a rotor  22  by the motor  21 . And a long hole  31  of a driving unit  3  is coordinated with a shaft  42  of a cover unit  4  to push the driving unit  3  to slide in a channel  221  of the rotor  22 . At first, the working fluid or gas enters from the first hole  121  of the first indentation  12  through the first pipe  14 . Between the first opening  222  and the first indentation  12 , a first interspace  51  is formed to let the working fluid or gas flow in. When a first opening  222  and a second opening  223  at two opposite ends of the channel  221  of the rotor  22  are corresponding to the first indentation  12  and the second indentation  13  respectively, the rotor  22  rotates clockwise and the driving unit  3  is moved toward the second indentation  13  and the first opening  223  until the second indentation is sealed by the rotor  22 . The rotor  22  keeps rotating until the first opening  222  is corresponding to the second indentation  13 . The working fluid or gas in the first interspace  51  is pushed from the second hole  131  of the second indentation  13  to the second indentation  13  to be outputted to the outside device through the second pipe. Thus, a circle of transferring is finished. At the same time, the second interspace  52  is formed by the second opening  223  and the first indentation  12  at the opposite end; and the working fluid or gas flows in. When the rotor  22  keeps rotating until the second opening  223  is corresponding to the second indentation  13  again, the working fluid or gas in the first interspace  51  is pushed to the second indentation  13  to be outputted from the second hole  131  of the second indentation  13  to the outside device through the second pipe. As shown in  FIG. 6A  to  FIG. 6D , steps in a circle are shown. Such a circle is run for 360 degrees; that is, there are two circles run. Hence, the working fluid or gas is transferred with low and saved energy. 
         [0025]    To sum up, the present invention is a pumping device, where component number of the device are few; the fabrication and the assembly is thus simplified; friction noise of vibration is reduced; and the energy is saved. 
         [0026]    The preferred embodiment herein disclosed is not intended to unnecessarily limit the scope of the invention. Therefore, simple modifications or variations belonging to the equivalent of the scope of the claims and the instructions disclosed herein for a patent are all within the scope of the present invention.