Patent Publication Number: US-6981661-B1

Title: Spraying gun

Description:
BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates to a spraying gun, and more particularly to a spraying gun having an adjusting device that can adjust the sprinkling manner of the spraying gun. 
   2. Description of the Related Art 
   A conventional spraying gun comprises a gun body having an inside formed with a water channel having a first end connected to a water inlet pipe and a second end connected to a nozzle having a plurality of water outlet holes. The water from the water inlet pipe is introduced into the water channel and is injected outward from the water outlet holes of the nozzle. However, the water from the water inlet pipe is injected outward from the water outlet holes of the nozzle constantly, so that the sprinkling manner of the conventional spraying gun is fixed and cannot be adjusted, thereby limiting the versatility of the conventional spraying gun. 
   SUMMARY OF THE INVENTION 
   In accordance with the present invention, there is provided a spraying gun, comprising a gun body, an adjusting device, a guide pipe, and a spraying nozzle, wherein:
         the gun body has a first end formed with a mounting portion formed with a protruding tube;   the adjusting device is mounted on the gun body and includes an rotatable knob, and a connecting member;   the rotatable knob of the adjusting device has a first end rotatably mounted on the mounting portion of the gun body and a second end formed with a positioning face having a peripheral wall formed with a water outlet hole communicating with an inside of the rotatable knob;   the connecting member of the adjusting device is mounted on the positioning face of the rotatable knob and has an inside formed with a plurality of water conducting holes selectively communicating with the water outlet hole of the rotatable knob;   the connecting member of the adjusting device has a first side formed with a pipe secured on the tube of the gun body and having a peripheral wall formed with a plurality of water inlet holes each communicating with the tube of the gun body and the inside of the rotatable knob;   the connecting member of the adjusting device has a second side formed with a support stud having an inside formed with a plurality of water outlet channels each communicating with a respective one of the water conducting holes of the connecting member;   the guide pipe is mounted on the adjusting device and has an inside formed with a plurality of water guide channels each communicating with a respective one of the water outlet channels of the connecting member; and   the spraying nozzle is mounted on the guide pipe and includes a water guide disk mounted on an upper end of the guide pipe and having an inside formed with a plurality of water conducting channels each communicating with a respective one of the water guide channels of the guide pipe, and a water outlet cover mounted on the water guide disk and having an inside formed with a plurality of water outlets holes each communicating with a respective one of the water conducting channels of the water guide disk.       

   The primary objective of the present invention is to provide a spraying gun having an adjusting device that can adjust the sprinkling manner of the spraying gun. 
   Another objective of the present invention is to provide a spraying gun, wherein the sprinkling manner of the spraying gun is adjusted by rotating the rotatable knob of the adjusting device, thereby facilitating a user operating the spraying gun. 
   A further objective of the present invention is to provide a spraying gun, wherein the user controls the sprinkling manner of the spraying gun easily, so that the water injected outward from the spraying gun is controlled exactly, thereby preventing the injected water from wetting the user&#39;s clothes. 
   A further objective of the present invention is to provide a spraying gun, wherein the adjusting device is adjusted easily and conveniently, thereby facilitating the user controlling the spraying gun. 
   Further benefits and advantages of the present invention will become apparent after a careful reading of the detailed description with appropriate reference to the accompanying drawings. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is a partially cut-away perspective view of a spraying gun in accordance with the preferred embodiment of the present invention; 
       FIG. 2  is an exploded perspective view of the spraying gun as shown in  FIG. 1 ; 
       FIG. 3  is a side plan cross-sectional view of the spraying gun as shown in  FIG. 1 ; 
       FIG. 4  is a partially enlarged view of the spraying gun as shown in  FIG. 3 ; 
       FIG. 5  is a partially plan operational view of the spraying gun as shown in  FIG. 1  in adjustment; and 
       FIG. 6  is a schematic operational view of the spraying gun as shown in  FIG. 1 . 
   

   DETAILED DESCRIPTION OF THE INVENTION 
   Referring to the drawings and initially to  FIGS. 1–5 , a spraying gun in accordance with the preferred embodiment of the present invention comprises a gun body  10 , an adjusting device  20 , a guide pipe  30 , and a spraying nozzle  40 . 
   The gun body  10  has a first end formed with a mounting portion  12  and a second end formed with a connecting port  11 . An O-ring  50  is mounted on a peripheral wall of the mounting portion  12  of the gun body  10 . The mounting portion  12  of the gun body  10  is formed with a protruding tube  121  having a peripheral wall formed with a locking groove  122 . An O-ring  500  is mounted on the peripheral wall of the tube  121  of the gun body  10 . 
   The adjusting device  20  is mounted on the gun body  10  and includes an rotatable knob  21 , a connecting member  22 , and a support jacket  23 . 
   The rotatable knob  21  of the adjusting device  20  has a first end rotatably mounted on the mounting portion  12  of the gun body  10  and a second end formed with a positioning face  211  having a peripheral wall formed with a water outlet hole  212  communicating with the inside of the rotatable knob  21 . The positioning face  211  of the rotatable knob  21  has a central portion formed with a mounting hole  213 . The second end of the rotatable knob  21  of the adjusting device  20  has a peripheral wall formed with a plurality of positioning holes  214 . 
   The connecting member  22  of the adjusting device  20  is mounted on the positioning face  211  of the rotatable knob  21  and has an inside formed with a plurality of water conducting holes  224  selectively communicating with the water outlet hole  212  of the rotatable knob  21  as shown in  FIG. 5 . An O-ring  504  is mounted on a peripheral wall of the connecting member  22 . The connecting member  22  of the adjusting device  20  has a first side formed with a pipe  221  secured on the tube  121  of the gun body  10  and having a peripheral wall formed with a plurality of water inlet holes  222  each communicating with the tube  121  of the gun body  10  and the inside of the rotatable knob  21 . The pipe  221  of the connecting member  22  is extended through the mounting hole  213  of the rotatable knob  21 . The pipe  221  of the connecting member  22  has an inside formed with a locking block  223  locked in the locking groove  122  of the tube  121  of the gun body  10 . The connecting member  22  of the adjusting device  20  has a second side formed with a support stud  220  having an inside formed with a plurality of water outlet channels  226  each communicating with a respective one of the water conducting holes  224  of the connecting member  22 . The support stud  220  of the connecting member  22  has a peripheral wall formed with a locking slot  225 . 
   The support jacket  23  of the adjusting device  20  is secured on the support stud  220  of the connecting member  22  and has an inside formed with a locking block  231  locked in the locking slot  225  of the support stud  220  of the connecting member  22 . The support jacket  23  of the adjusting device  20  has a peripheral wall formed with a receiving hole  232  for receiving an elastic member  233  and a positioning pin  234  which is movable and selectively positioned in either one of the positioning holes  214  of the rotatable knob  21 . 
   The guide pipe  30  is mounted on the adjusting device  20  and has an inside formed with a plurality of water guide channels  31  each communicating with a respective one of the water outlet channels  226  of the connecting member  22 . The guide pipe  30  has a lower end extended through the support jacket  23  of the adjusting device  20  and mounted in the support stud  220  of the connecting member  22 . 
   The spraying nozzle  40  is mounted on the guide pipe  30  and includes a water guide disk  42  mounted on an upper end of the guide pipe  30  and having an inside formed with a plurality of water conducting channels  421  each communicating with a respective one of the water guide channels  31  of the guide pipe  30 , a water outlet cover  43  mounted on the water guide disk  42  and having an inside formed with a plurality of water outlets holes  431  each communicating with a respective one of the water conducting channels  421  of the water guide disk  42 , and a shade  41  mounted on the upper end of the guide pipe  30  and rested on the water guide disk  42  to support the water guide disk  42 . 
   When in use, referring to  FIGS. 1–6 , the connecting port  11  of the gun body  10  is mounted on a water inlet pipe  51  as shown in  FIG. 6 , so that the water  60  (see  FIG. 3 ) from the water inlet pipe  51  in turn flows through the inside of the gun body  10 , the tube  121  of the gun body  10 , the water inlet holes  222  of the pipe  221  of the connecting member  22 , the inside of the rotatable knob  21 , the water outlet hole  212  of the rotatable knob  21 , either one of the water conducting holes  224  of the connecting member  22 , either one of the water outlet channels  226  of the connecting member  22 , either one of the water guide channels  31  of the guide pipe  30  and either one of the water conducting channels  421  of the water guide disk  42 , and is injected outward from either one of the water outlets holes  431  of the water outlet cover  43  for use. 
   In such a manner, the water from the water inlet pipe  51  is injected outward from a single one of the water outlets holes  431  of the water outlet cover  43  for use. 
   Alternatively, as shown in  FIGS. 5 and 6 , the rotatable knob  21  is rotated relative to the gun body  10 , so that the water outlet hole  212  of the rotatable knob  21  is moved to align with either one of the water conducting holes  224  of the connecting member  22 . 
   In such a manner, the water from the water inlet pipe  51  is injected outward from either one of the water outlets holes  431  of the water outlet cover  43 , thereby changing and adjusting the sprinkling manner of the spraying gun. 
   Accordingly, the sprinkling manner of the spraying gun is adjusted by rotating the rotatable knob  21  of the adjusting device  20 , thereby facilitating a user operating the spraying gun. In addition, the user controls the sprinkling manner of the spraying gun easily, so that the water injected outward from the spraying gun is controlled exactly, thereby preventing the injected water from wetting the user&#39;s clothes. Further, the adjusting device  20  is adjusted easily and conveniently, thereby facilitating the user controlling the spraying gun. 
   Although the invention has been explained in relation to its preferred embodiment(s) as mentioned above, it is to be understood that many other possible modifications and variations can be made without departing from the scope of the present invention. It is, therefore, contemplated that the appended claim or claims will cover such modifications and variations that fall within the true scope of the invention.