Patent Publication Number: US-6209807-B1

Title: Quickly installed spray nozzle

Description:
FIELD OF THE INVENTION 
     The present invention relates generally to a nozzle, and more particularly to a spray nozzle that can be installed quickly. 
     BACKGROUND OF THE INVENTION 
     As shown in FIG. 1, a prior art spray nozzle consists of a nozzle holder  10  and a nozzle head  11  which are engaged with each other. At the top of the nozzle holder  10  near to the water outlet  12  is formed an external thread  13 , whereas inside of the nozzle head  11  is formed an internal thread. While changing or installing the nozzle head  11 , the user will need to spend more time in swiveling between the nozzle head  11  and the nozzle holder  10  so as to engage with the water outlet  12 . 
     Such a design is defective in that it is waste of time and needs to change the shapes of the nozzle head if the spray nozzle is required to have different forms and ranges in spraying. 
     SUMMARY OF THE INVENTION 
     The primary objective of the present invention is therefore to provide a quickly installed spray nozzle with a special device to the connect tube of the top nozzle holder and to the casing of the opposite nozzle head. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 shows an exploded view of the prior art spray nozzle. 
     FIG. 2 shows a perspective view of the present invention. 
     FIG. 3 shows an exploded view of the present invention. 
     FIG. 4 shows a sectional view of the present invention in combination. 
     FIG. 5 shows a schematic view of the present invention of connecting in operation. 
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENT 
     As shown in FIGS. 2 and 3, a quickly installed spray nozzle embodied in the present invention is composed of the following items. 
     A nozzle holder  20  is provided at the top with a water outlet  21  which extends an appropriate distance by connect tube  22 . The diameter of the connect tube  22  is smaller than the tube body  23  of the nozzle holder  20  at top end thereof, so as to form a shoulder  24  between the connect tube  22  and the tube body  23 . A protuberance  25  is provided at both sides of the outer wall of the connect tube  22 . 
     A nozzle head  30  extends an appropriate length to form a casing  31  at one end thereof. The inner diameter of the casing  31  is matched with the outer diameter of the connect tube  22 . The inner wall of the casing  31  is further matched with the protuberance  25  of the connect tube  22  that extends inside by a horizontal guide trough  32  to the end of the casing  31 . The end of the guide trough  32  is turned to be formed into a wedge trough  33 . A washer  34  is provided inside of the casing  31  to seal with the shoulder (as shown in FIG. 4)  36  which formed at the intersection of the inner wall of the casing  31  and the trumpet portion  35 . 
     As shown in FIGS. 3-5, when the user would like to change or install the nozzle head  30 , the casing  31  of the nozzle head  30  can face directly to the connect tube  22  of the nozzle holder  20  so that the protuberance  25  at the outer wall of the connect tube  22  aligns with the guide trough  32  in the inner wall of the casing  31 . Furthermore, the connect tube  22  of the nozzle holder  20  inserts into the casing  31  of the nozzle head  30 . The edge of the connect tube  22  presses against the washer  34  inside of the casing  31  at the end. The protuberance  25  is located at the juncture of guide trough  32  and wedge trough  33 . The nozzle head  30  is turned for an appropriate distance, so as to enable the wedge trough  33  of the casing  31  to be positioned around the protuberance  25  when the protuberance is inserted into the wedge trough  33  so that the nozzle head  30  can be quickly installed and connected in place. If the nozzle head  30  needs to be changed, one only needs to turn the nozzle head  30  to the opposite side, so that the wedge trough  33  is separated from the protuberance  25  and the protrusion  25  is positioned in the guide trough  32 . Then, the user can pull out directly the nozzle head  30 . In the present invention, the nozzle head  30  can insert directly to, and it just needs to turn for one time, then the nozzle holder  20  can be quickly installed in the place. 
     The embodiment of the present invention described above is to be deemed in all respects as being illustrative and not restrictive. Accordingly, the present invention may be embodied in other specific forms without deviating from the spirit thereof. The present invention is therefore to be limited only by the scopes of the following appended claim.