Patent Publication Number: US-2016228224-A1

Title: Portable teeth rinsing machine

Description:
FIELD OF THE INVENTION 
     The present invention relates to a portable teeth rinsing machine and particularly to a portable teeth rinsing machine that is small in size and easy to carry around. 
     BACKGROUND OF THE INVENTION 
     Teeth rinsing machines are known in the art. For instance, Taiwan Patent No. M462588 discloses a portable teeth rinsing machine control valve which can provide water ejection, but not air spraying. Hence it cannot provide many types of cleaning as desired when in use, and still has room for improvement. 
     SUMMARY OF THE INVENTION 
     The primary object of the present invention is to overcome problem of the conventional technique of unable to provide water ejection and air spraying. 
     To achieve the foregoing object the present invention provides a portable teeth rinsing machine that includes a base and a spray gun. The base includes an air compression device to generate compressed air and a liquid compression device to generate a compressed liquid. The spray gun communicates with the air compression device and the liquid compression device, and includes an air directing passage to get the compressed air, a liquid directing passage to get the compressed liquid, a first depressing portion located in the air directing passage and triggered to output the compressed air, and a second depressing portion located in the liquid directing passage and triggered to output the compressed liquid. 
     In one embodiment the air compression device includes an air pump, an air pipe communicating with the air pump to transport the compressed air and a first pressure switch communicating with the air pipe and triggered by the pressure of the compressed air in the air pipe to control the air pump. 
     In another embodiment the liquid compression device includes a liquid pump, a liquid pipe communicating with the liquid pump to transport the compressed liquid and a second pressure switch communicating with the liquid pipe and triggered by the pressure of the compressed liquid in the liquid pipe to control the liquid pump. 
     In yet another embodiment the portable teeth rinsing machine further includes a cistern which has a housing compartment, an opening at one side of the housing compartment and communicating therewith, a wall at an opposite side of the housing compartment and connecting therewith, and a valve located on the wall. The valve has an open state pushed to provide the liquid to the liquid pump, and a closed state closed in normal conditions. 
     In yet another embodiment the portable teeth rinsing machine further includes a holder installed on the base to hold the spray gun and a safety switch located on the holder. The safety switch has an open circuit state pushed by the spray gun to set off electric connection of the air compression device and the liquid compression device, and a conductive state without being pushed by the spray gun to set on electric connection of the air compression device and the liquid compression device. 
     By means of the structure set forth above, compared with the conventional techniques, the invention provides many advantageous features, notably: 
     1. The invention holds the spray gun through the holder located on the base. The holder is smaller in size and includes the safety switch, erroneous touching of the spray gun to output the compressed air or the compressed liquid can be prevented. 
     2. Through the first pressure switch and the second pressure switch to control respectively the air pump and the liquid pump, idle operation of the air pump and the liquid pump can be avoided to increase the life span of the air pump and the liquid pump. 
     The foregoing, as well as additional objects, features and advantages of the invention will be more readily apparent from the following detailed description, which proceeds with reference to the accompanying drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a schematic view of an embodiment of the invention. 
         FIG. 2  is a sectional view of the base of an embodiment of the invention. 
         FIG. 3  is a schematic view of the air compression device of an embodiment of the invention. 
         FIG. 4  is a schematic view of the liquid compression device of an embodiment of the invention. 
         FIG. 5  is a unit block diagram of the base of an embodiment of the invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Please referring to  FIGS. 1 and 2 , the present invention aims to provide a portable teeth rinsing machine that includes a base  1 , a spray gun  2  coupled on the base  1 , a holder  3  to hold the spray gun  2  and a cistern  4  located on the base  1 . The base  1  includes an air compression device  11  and a liquid compression device  12 . The air compression device  11  aims to generate compressed air. The cistern  4  holds a liquid and supplies the liquid to the liquid compression device  12  which generates a compressed liquid. The spray gun  2  aims to output the compressed air and the compressed liquid for users to cleanse teeth. The air compression device  11  includes an air pump  111 , an air pipe  112  communicating with the air pump  11  to transport the compressed air, a first pressure switch  113  communicating with the air pipe  112  and triggered by the pressure of the compressed air in the air pipe  112  to control the air pump  111 , and a first transmission portion  114  electrically connected to the air pump  111  and the first pressure switch  113 . When the first pressure switch  113  is triggered by the internal pressure of the air pipe  112  it controls operation of the air pump  111 . The liquid compression device  12  includes a liquid pump  121 , a liquid pipe  122  communicating with the liquid pump  121  to transport the compressed liquid, a second pressure switch  123  communicating with the liquid pipe  122  and triggered by the pressure of the compressed liquid in the liquid pipe  122  to control the liquid pump  121 , a check valve  124  bridging the liquid pump  121  and the liquid pipe  122 , and a second transmission portion  125  electrically connected to the liquid pump  121  and the second pressure switch  123 . The check valve  124  can prevent the compressed liquid from flowing back to the liquid pump  121  to avoid indirectly polluting the liquid. When the second pressure switch  123  is triggered by the internal pressure of the liquid pipe  122  it controls operation of the liquid pump  121 . The first pressure switch  113  and the second pressure switch  123  are respectively a pressure control device, its working principle is to issue an alarm or a control signal when the measured pressure has reached a rated value. 
     Also referring to  FIG. 1 , the spray gun  2  is communicating with the air compression device  11  and the liquid compression device  12 , and includes an air directing passage (not shown in the drawings) to get the compressed air, a liquid directing passage (not shown in the drawings) to get the compressed liquid, a first depressing portion  21  located in the air directing passage and triggered to output the compressed air, and a second depressing portion  22  located in the liquid directing passage and triggered to output the compressed liquid. The spray gun  2  can be a three-way spray gun, and can generate a corresponding amount of the compressed air and the compressed liquid according to the amount of pressure depressed by a user on the first depressing portion  21  and the second depressing portion  22 . The holder  3  is installed on the base  1  to hold the spray gun  2 . The cistern  4  has a housing compartment  41 , an opening  42  located at one side of the housing compartment  41  and communicating with therewith, a wall  43  located at an opposite side of the housing compartment  41  and communicating therewith, and a valve  44  located on the wall  43 . The valve  44  has an open state pushed to provide the liquid to the liquid pump  121 , and a closed state closed in normal conditions. The valve  44  is made from rubber. The cistern  4  has a storage state to cover the base  1  and a use state mounted onto the base  1  to hold the liquid. Moreover, the valve  44  can be pushed by an input tube  5  connected to the liquid pump  121  to output the liquid to the liquid pump  121 . The holder  3  also has a safety switch  6  located thereon that has an open circuit state pushed by the spray gun  2  to set off electric connection of the air compression device  11  and the liquid compression device  12 , and a conductive state without being pushed by the spray gun  2  to set on electric connection of the air compression device  11  and the liquid compression device  12 . 
     Also referring to  FIGS. 1 and 5 , first, assumed that the cistern  4  covers the base  1  in advance. In addition, the invention also is connected to a power input source  7 . The safety switch  6  is electrically connected to the power input source  7  to set on or set off electrical connection therewith. The first pressure switch  113  and the second pressure switch  123  are connected respectively to the safety switch and the air pump  111  and the liquid pump  121 , as shown in  FIG. 5 . When in use, fetch the cistern  4  and hold the liquid in the housing compartment  41 . When the spray gun  2  is held on the holder  3  and the safety switch  6  is butted, the air pump  111  and the liquid pump  121  are set off electrically, hence the air pump  111  and the liquid pump  121  stop generating the compressed air and the compressed liquid. When the user wants to use and removes the spray gun  2  from the holder  3 , the safety switch  6  is not being butted by the spray gun  2 , and the air pump  111  and the liquid pump  121  are set on electrically, and the first pressure switch  113  and the second pressure switch  123  detect respectively the pressure in the air pipe  112  and the liquid pipe  122 . When the first pressure switch  113  and the second pressure switch  123  detect the pressure being too small, they control the air pump  111  and the liquid pump  121  to generate the compressed air and the compressed liquid. When the pressure has reached a preset pressure the first pressure switch  113  and the second pressure switch  123  set off electrical connection between the power input source  7  and the air pump  111  and the liquid pump  121  so that the air pump  111  and the liquid pump  121  stop operation. When the user depresses respectively the first depressing portion  21  and the second depressing portion  22 , the spray gun  2  outputs respectively the compressed air and the compressed liquid. In addition, when the user depresses the first depressing portion  21  and the second depressing portion  22  at the same time the spray gun  2  outputs the compressed air and the compressed liquid at the same time to generate atomized spray. When the user has finished using, cover the cistern  4  over the base  1  for storage. 
     As a conclusion, the invention can hold the liquid in the cistern, and generate the compressed air and the compressed liquid through the air pump and the liquid pump. In addition, the air pump and the liquid pump can be controlled respectively through the first pressure switch and the second pressure switch. Moreover, through the safety switch erroneous touching of the spray gun held in the holder can be prevented to avoid delivering the compressed air or the compressed liquid.