Patent Publication Number: US-11046128-B2

Title: Anti-spray structure for conention of air nozzle of tire of vehicle and conenction hose of air compressor

Description:
FIELD OF THE INVENTION 
     The present invention relates to an anti-spray structure for a connection of an air nozzle of a tire of a vehicle and a connection hose of an air compressor is capable of avoiding an eruption of the chemical sealant in an incorrect operation. 
     BACKGROUND OF THE INVENTION 
     A conventional air nozzle of a tire of a vehicle is applied to inflate or discharge airs into or from the tire. Furthermore, a conventional tire repair device is employed to feed chemical sealant and to inflate airs into the tire which is broken. The tire repair device is connected with an air compressor, and a sealant supply can is connected with an outlet valve of the air compressor, wherein compressed airs are controlled by a control valve to output the chemical sealant out of a connector on a distal end of a connection hose with the compressed airs. However, when a connection structure of the connector of the connection hose and the air core of the tire is not operated properly, the chemical sealant erupts out of the connector of the connection hose easily. 
     The present invention has arisen to mitigate and/or obviate the afore-described disadvantages. 
     SUMMARY OF THE INVENTION 
     The primary aspect of the present invention is to provide an anti-spray structure for a connection of an air nozzle of a tire of a vehicle and a connection hose of an air compressor is capable of avoiding an eruption of the chemical sealant in an incorrect operation. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view showing the application of an anti-spray structure for a connection of an air nozzle of a tire of a vehicle and a connection hose of an air compressor according to a preferred embodiment of the present invention. 
         FIG. 2  is a perspective view showing the exploded components of the anti-spray structure according to the preferred embodiment of the present invention. 
         FIG. 3  is a cross-sectional perspective view showing the assembly of the anti-spray structure according to the preferred embodiment of the present invention. 
         FIG. 4  is a cross-sectional perspective view showing the assembly of a fitting sleeve of the anti-spray structure according to the preferred embodiment of the present invention. 
         FIG. 5  is a cross-sectional perspective view showing the assembly of a cylindrical base of the anti-spray structure according to the preferred embodiment of the present invention. 
         FIG. 6  is a perspective view showing the assembly of a valve bolt of the anti-spray structure according to the preferred embodiment of the present invention. 
         FIG. 7  is a cross-sectional perspective view showing the assembly of a lock element of the anti-spray structure according to the preferred embodiment of the present invention. 
         FIG. 8  is a cross-sectional view showing the connection of the anti-spray structure and the connection hose according to the preferred embodiment of the present invention. 
         FIG. 9  is a cross-sectional view showing the operation of the anti-spray structure according to the preferred embodiment of the present invention. 
         FIG. 10  is a cross-sectional perspective view showing the assembly of a valve core assembly of the air nozzle of the tire according to the preferred embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     With reference to  FIGS. 1-3 , an air compressor according to a preferred embodiment of the present invention comprises: a box  1 , a sealant supply can  2 , and a connection hose  4 . 
     The box  1  includes a button  11  fixed on a top thereof, a coupling orifice  12  defined on a peripheral side thereof, and a body of the air compressor (not shown) accommodated in the box  1 . The connection hose  4  includes a first segment  41  formed on a first end thereof, and the connection hose  4  includes a second segment  42  formed on a second end thereof and having an anti-spray connector  5  connected on the second segment  42 . The sealant supply can  2  is connected on the coupling orifice  12 , and the tire sealant supply can  2  includes an open segment  21  extending downward, a bottom fringe  22  extending upward, and a supply tube  23  configured to engage with the first segment  41  of the connection hose  4 . The anti-spray connector  5  of the second segment  42  of the connection hose  4  is screwed with an air nozzle  9  of a tire  99 , when feeding chemical sealant and inflating compressed airs to the tire  99  which is broken. After the box  1  is started by a vehicle power supply or other DC power supplies, the compressed airs of the air compressor force the chemical sealant of the sealant supply can  2  to flow into the tire  99  via the connection hose  4 , thus repairing and inflating the tire  99 . 
     Referring to  FIGS. 2-8 , an anti-spray structure for a connection of the air nozzle of the tire of a vehicle and the air compressor is applied to avoid eruption of the chemical sealant, and the anti-spray structure comprises the anti-spray connector  5  connected on the second segment  42  of the connector hose  4 , the anti-spray connector  5  includes a fitting sleeve  6  (as shown in  FIG. 4 ) formed in a cylinder shape, and the fitting sleeve  6  has a chamber  60  defined therein, a threaded orifice  61  formed in a first end of the threaded orifice  6  and having female threads, a through orifice  620  defined on a second end of the fitting sleeve  6 , a projected shoulder  62  formed on an inner wall of the through orifice  620 , and a diameter of the projected shoulder  62  is more than a diameter of the through orifice  620 , wherein the threaded orifice  61 , the chamber  60 , and the through orifice  620  are communicated with one another. A cylindrical base  7  (as shown in  FIG. 5 ) includes a cylindrical room  70 , female threads  71  formed adjacent to a first end of the cylindrical base  7 , a stepped coupling segment  72  extending on a second end of the cylindrical base  7 , and a conduit  73  defined in the coupling segment  72  and communicating with the cylindrical room  70 , wherein a diameter of the cylindrical room  70  is more than a diameter of the conduit  73 , and the cylindrical base  7  further includes a first stepped portion  74  formed between the cylindrical room  70  and the conduit  73 , a recessed section  75  formed on an outer wall of the cylindrical base  7  proximate to the coupling segment  72 , wherein a diameter of the cylindrical base  7  is more than a diameter of the recessed section  75 , and a second stepped portion  76  is defined between the cylindrical base  7  and the recessed section  75 . 
     The coupling segment  72  of the cylindrical base  7  is put into the chamber  60  from the threaded orifice  61  of the fitting sleeve  6  via the through orifice  620 , such that the projected shoulder  62  contacts with the second stepped portion  76  of the cylindrical base  7 , the coupling segment  72  of the cylindrical base  7  extends out of the fitting sleeve  6  to connect with the second segment  42  of the connection hose  4 , and a fixing bushing  40  is configured to connect the connection hose  4  and the anti-spray connector  5 , as illustrated in  FIG. 3 . 
     A first spring  51  is received into the cylindrical room  70  of the cylindrical base  7  so that a first end of the first spring  51  abuts against the first stepped portion  74 ; a valve bolt  8  (as shown in  FIG. 6 ) includes a post  81  extending on a first end thereof, a connecting disc  82  extending from a second end of the valve bolt  8 , multiple recesses  83  formed around an outer wall of the connecting disc  82 , a neck  84  formed between the post  81  and the connecting disc  82 , multiple spaced slots  85  defined around the post  81 , and a first seal ring  86  fitted on the neck  84  of the valve bolt  8 , such that the second end of the valve bolt  8  is put into the cylindrical room  70  of the cylindrical base  7  to contact with a second end of the first spring  51 , as illustrated in  FIG. 3 . A lock element  52  (as shown in  FIG. 7 ) includes a hollow cavity  520  defined therein, a hexagonal tab  521  extending around a first end of the lock element  52 , a tilted extension  522  extending on a second end of the lock element  52 , male threads  523  formed around the tilted extension  522  of the lock element  52 ; and a second seal ring  53  is fitted from the male threads of the tilted extension  522  of the lock element  52  to contact with the hexagonal tab  521 , such that when the lock element  52  is fixed with the valve bolt  8  and the cylindrical base  7 , the male threads  523  of the lock element  52  are screwed with the female threads  71  of the cylindrical base  7 , the first spring  51  pushes the valve bolt  8  to contact with the lock element  52 , and the first seal ring  86  of the valve bolt  8  abuts against the tilted extension  522  of the lock element  52 ; an abutting loop  54  has a passing orifice  540  (as illustrated in  FIG. 2 ) and is put into the threaded orifice  61  of the fitting sleeve  6  to fit on the lock element  52  and to abut against the hexagonal tab  521 , as shown in  FIG. 3 . The multiple spaced slots  85  of the valve bolt  8  pass through the hollow cavity  520  of the lock element  52  and the passing orifice  540  of the abutting loop  54  to locate in the threaded orifice  61 , hence the first spring  51  forces the first seal ring  86  of the valve bolt  8  to contact with the tilted extension  522  of the lock element  52  matingly. 
     Referring to  FIG. 8 , after the button  11  of the box  1  is turned on (as shown in  FIG. 1 ), a pressure of the compressed airs of the air compressor forces the chemical sealant to flow, but the chemical sealant does not flow through the hollow cavity  520  of the lock element  52  because the first seal ring  86  of the valve bolt  8  contacts with the tilted extension  522  of the lock element  52  tightly, thus avoiding the eruption of the chemical sealant. 
     As shown in  FIGS. 9 and 10 , a valve core assembly  91  is accommodated in the air nozzle  9  of the tire  99 , and the valve core assembly  91  includes a mounting  92 , an arcuate stop shoulder  921  surrounding around a mouth of the mounting  92  and extending inward from an end of the mounting  92 , and an aperture  922  defined in the mounting  92 ; a hollow receiving sleeve  93  having a retaining shoulder  931  formed on a first end of the hollow receiving sleeve  93 , and a holder  932  formed on a second end of the hollow receiving sleeve  93 ; a central needle  94  formed in a column shape and having multiple spaced ribs  941  formed on the central needle  94 ; a second spring  95  fitted with the central needle  94  and a first end of the second spring  95  abutting against the multiple spaced ribs  941  of the central needle  94 ; the central needle  94  being received in the hollow receiving sleeve  93  from the first end of the hollow receiving sleeve  93  so that a second end of the second spring  95  contacts with the holder  932 , and the second spring  95  is surrounded by the receiving hollow sleeve  93 ; a contacting loop  96  fitted on a first end of the central needle  94 ; such that after the hollow receiving sleeve  93  is connected with the mounting  92 , the arcuate stop shoulder  921  of the mounting  92  engages with the retaining shoulder  931  of the hollow receiving sleeve  93 , a second end of the central needle  94  extends out of the aperture  922  of the mounting  92 , and the second spring  95  pushes the contacting loop  96  of the central needle  94  to close the holder  932  of the hollow receiving sleeve  93 . 
     As illustrated in  FIGS. 1 and 9 , when the threaded orifice  61  of the anti-spray connector  5  is screwed with the air nozzle  9  of the tire  99 , the valve bolt  8  of the anti-spray connector  5  contacts with and urges the central needle  94  of the air nozzle  9  of the tire  99  to move so that the contacting loop  96  of the central needle  94  removes from the holder  932  of the hollow receiving sleeve  93  (as shown in  FIG. 10 ). When the threaded orifice  61  of the anti-spray connector  5  is screwed with the air nozzle  9  of the tire  99 , the valve bolt  8  is urged by the central needle  94  of the air nozzle  9  to press the first spring  51  so that the first seal ring  86  detaches from the tilted extension  522  of the lock element  52 , and the hollow cavity  520  of the lock element  52  is communicated, in the meantime, the chemical sealant is pushed by the compressed airs to flow into the tire  99  via the conduit  73  of the cylindrical base  7 , the cylindrical room  70  of the cylindrical base  7 , the multiple recesses  83  of the connecting disc  82  of the valve bolt  8 , the multiple spaced slots  85  of the valve bolt  8 , the passing orifice  540  of the abutting loop  54 , the threaded orifice  61 , the aperture  922  of the mounting  92  of the air nozzle  9 , the hollow receiving sleeve  93 , and the holder  932  of the hollow receiving sleeve  93 , thus feeding the chemical sealant and inflating the compressed airs to the tire  99 . 
     Thereby, the anti-spray structure for the connection of the air nozzle of the tire of the vehicle and the connection hose of the air compressor is capable of avoiding the eruption of the chemical sealant in an incorrect operation. 
     While the preferred embodiments of the invention have been set forth for the purpose of disclosure, modifications of the disclosed embodiments of the invention and other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments which do not depart from the spirit and scope of the invention.