TREA

Mold spray gun structure

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Information

  • Patent Grant
  • 6543705
  • Patent Number
    6,543,705
  • Date Filed
    Tuesday, November 27, 2001
    22 years ago
  • Date Issued
    Tuesday, April 8, 2003
    21 years ago
  • Inventors
  • Examiners
    • Mar; Michael
    • Kim; Christopher
    Agents
    • Rosenberg, Klein & Lee
Information
Abstract
A mold spray gun structure includes a gun body, a spray head, and a paint can. The gun body is provided with a connection portion for mounting the spray head. The connection portion is formed with a locking recess which has an inner wall formed with at least one plane portion and has an opening which has two sides formed with two opposite hook portions. The spray head is formed with a neck portion locked in the locking recess. The neck portion is formed with at least one plane portion which is rested on the plane portion of the locking recess, and the hook portions are hooked and locked on the neck portion of the spray head.
Description




BACKGROUND OF THE INVENTION




1. Field of the Invention




The present invention relates to a mold spray gun structure, and more particularly to a mold spray gun structure, wherein the spray head may be mounted on the gun body easily and rapidly in a snap locking manner.




2. Description of the Related Art




A conventional mold spray gun in accordance with the prior art comprises a gun body, a spray head mounted on the gun body, and a paint can mounted on the spray head. The spray head has a first end formed with a spray hole, and a second end formed with a neck portion mounted on the gun body. A fastening ring is mounted on the gun body, for fastening the neck portion of the spray head mounted on the gun body. The spray hole of the spray head is easily blocked, so that it is necessary to detach the spray head from the gun body to clean the spray hole of the spray head. Thus, the user often has to loosen the fastening ring to detach the spray head from the gun body and to tighten the fastening ring to secure the spray head on the gun body, thereby causing inconvenience to the user.




SUMMARY OF THE INVENTION




The present invention has arisen to mitigate and/or obviate the disadvantage of the conventional mold spray gun.




The primary objective of the present invention is to provide a mold spray gun structure, wherein the neck portion of the spray head may be mounted on the connection portion of the gun body easily and rapidly in a snap locking manner.




Another objective of the present invention is to provide a mold spray gun structure, wherein the plane portions of the neck portion of the spray head are rested on the plane portions of the locking recess of the connection portion of the gun body, so that the neck portion of the spray head cannot be rotated relative to the connection portion of the gun body, such that the neck portion of the spray head may be positioned on the connection portion of the gun body rigidly and stably.




A further objective of the present invention is to provide a mold spray gun structure, wherein the neck portion of the spray head is positioned on the connection portion of the gun body rigidly and stably, so that the paint can mounted on the neck portion of the spray head may have an exact and rigid positioning effect, and will not interfere with operation of the gun body, thereby preventing from affecting the painting work.




In accordance with the present invention, there is provided a mold spray gun structure, comprising: a gun body, a spray head mounted on the gun body, and a paint can mounted on the spray head, the gun body provided with a connection portion for mounting the spray head, wherein:




the connection portion of the gun body is formed with a locking recess, the locking recess has an inner wall formed with at least one plane portion, the locking recess has an opening, the opening has two sides formed with two opposite hook portions, the spray head has one end formed with a neck portion locked in the locking recess of the connection portion of the gun body, the neck portion of the spray head has a surface formed with at least one plane portion, the at least one plane portion of the neck portion of the spray head is rested on the at least one plane portion of the locking recess of the connection portion of the gun body, and the hook portions are hooked and locked on the neck portion of the spray head.




Preferably, the inner wall of the locking recess is formed with a plurality of plane portions which are connected to form a curve shape.




Preferably, the inner wall of the locking recess is formed with two opposite plane portions, and an arcuate portion located between the two opposite plane portions.




Preferably, the neck portion of the spray head is formed with a plurality of plane portions which are connected to form a polygonal shape.




Preferably, the neck portion of the spray head is formed with two opposite plane portions, and an arcuate portion located between the two opposite plane portions.











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 plan exploded view of a mold spray gun structure in accordance with the present invention;





FIG. 2

is an assembly view of the mold spray gun structure as shown in

FIG. 1

;





FIG. 3

is a perspective view of a connection portion of a gun body of the mold spray gun structure in accordance with an embodiment of the present invention;





FIG. 4

is a cross-sectional view of the mold spray gun structure as shown in

FIG. 2

;





FIG. 5

is a perspective view of a connection portion of a gun body of the mold spray gun structure in accordance with another embodiment of the present invention; and





FIG. 6

is a cross-sectional view of the mold spray gun structure as shown in

FIG. 2

, in accordance with another embodiment of the present invention.











DETAILED DESCRIPTION OF THE INVENTION




Referring to the drawings and initially to

FIGS. 1 and 2

, a mold spray gun structure in accordance with a preferred embodiment of the present invention comprises a gun body


11


, a spray head


21


, and a paint can


31


.




The gun body


11


is provided with an air valve


12


, so that ambient air of a high pressure may enter the gun body


11


through the air valve


12


. The gun body


11


is provided with an air valve switch


13


for controlling flow of the air of a high pressure contained in the gun body


11


. The gun body


11


has one end provided with a nozzle


14


for ejecting the air of a high pressure contained in the gun body


11


. The gun body


11


is provided with a connection portion


15


for mounting the spray head


21


.




The spray head


21


has a first end formed with a cone-shaped portion which has a tip formed with a spray hole (not shown), and a second end formed with a neck portion


22


mounted on the connection portion


15


of the gun body


11


. The spray hole of the cone-shaped portion of the spray head


21


is located adjacent to the nozzle


14


of the gun body


11


as shown in FIG.


2


.




The paint can


31


has a top portion formed with a connection mouth


32


for mounting the neck portion


22


of the spray head


21


.




Referring to

FIGS. 1-3

, the connection portion


15


of the gun body


11


is formed with a locking recess


16


. The locking recess


16


has an inner wall formed with a plurality of plane portions


17


which are connected to form a curve shape. The locking recess


16


has one end provided with an opening


18


. The opening


18


has two sides formed with two opposite hook portions


19


.




Referring to

FIGS. 1-4

, the neck portion


22


of the spray head


21


has a surface formed with a plurality of plane portions


23


which are connected to form a polygonal (preferably hexagonal) shape. When the neck portion


22


of the spray head


21


is mounted on the connection portion


15


of the gun body


11


, the neck portion


22


of the spray head


21


is locked in the locking recess


16


of the connection portion


15


of the gun body


11


. Thus, the plane portions


23


of the neck portion


22


of the spray head


21


are rested on the plane portions


17


of the locking recess


16


of the connection portion


15


of the gun body


11


, and the hook portions


19


are hooked and locked on the neck portion


22


of the spray head


21


.




Accordingly, the neck portion


22


of the spray head


21


may be mounted on the connection portion


15


of the gun body


11


easily and rapidly in a snap locking manner. In addition, the plane portions


23


of the neck portion


22


of the spray head


21


are rested on the plane portions


17


of the locking recess


16


of the connection portion


15


of the gun body


11


, so that the neck portion


22


of the spray head


21


cannot be rotated relative to the connection portion


15


of the gun body


11


, such that the neck portion


22


of the spray head


21


may be positioned on the connection portion


15


of the gun body


11


rigidly and stably. Further, the neck portion


22


of the spray head


21


is positioned on the connection portion


15


of the gun body


11


rigidly and stably, so that the paint can


31


mounted on the neck portion


22


of the spray head


21


may have an exact positioning effect, and will not interfere with operation of the gun body


11


, thereby preventing from affecting the painting work.




Referring to

FIGS. 2 and 5

, the connection portion


15


of the gun body


11


is formed with a locking recess


16


. The locking recess


16


has an inner wall formed with two opposite plane portions


41


, and an arcuate portion


42


located between the two opposite plane portions


41


. The locking recess


16


has one end provided with an opening


18


. The opening


18


has two sides formed with two opposite hook portions


19


.




Referring to

FIGS. 2 and 6

, the neck portion


22


of the spray head


21


has a surface formed with two opposite plane portions


43


and an arcuate portion (not labeled) located between the two opposite plane portions


43


. When the neck portion


22


of the spray head


21


is mounted on the connection portion


15


of the gun body


11


, the neck portion


22


of the spray head


21


is locked in the locking recess


16


of the connection portion


15


of the gun body


11


. Thus, the plane portions


43


of the neck portion


22


of the spray head


21


are rested on the plane portions


41


of the locking recess


16


of the connection portion


15


of the gun body


11


, and the hook portions


19


are hooked and locked on the neck portion


22


of the spray head


21


.




Accordingly, the neck portion


22


of the spray head


21


may be mounted on the connection portion


15


of the gun body


11


easily and rapidly in a snap locking manner. In addition, the plane portions


43


of the neck portion


22


of the spray head


21


are rested on the plane portions


41


of the locking recess


16


of the connection portion


15


of the gun body


11


, so that the neck portion


22


of the spray head


21


cannot be rotated relative to the connection portion


15


of the gun body


11


, such that the neck portion


22


of the spray head


21


may be positioned on the connection portion


15


of the gun body


11


rigidly and stably. Further, the neck portion


22


of the spray head


21


is positioned on the connection portion


15


of the gun body


11


rigidly and stably, so that the paint can


31


mounted on the neck portion


22


of the spray head


21


may have an exact positioning effect, and will not interfere with operation of the gun body


11


, thereby preventing from affecting the painting work.




Although the invention has been explained in relation to its preferred embodiment 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.



Claims
  • 1. A mold spray gun structure, comprising: a gun body, a spray head mounted on the gun body, and a paint can mounted on the spray head, the gun body being provided with a connection portion for mounting the spray head, wherein:the connection portion of the gun body is integrally formed on the gun body in one-piece formation and is formed with a locking recess, the locking recess has an inner wall formed with at least one plane portion, the locking recess has an opening, the opening has two sides formed with two opposite hook portions extending inwardly toward each other, the spray head has one end formed with a neck portion locked in the locking recess of the connection portion of the gun body, the neck portion of the spray head has a surface formed with at least one plane portion, the at least one plane portion of the neck portion of the spray head is rested on the at least one plane portion of the locking recess of the connection portion of the gun body, and the hook portions are hooked and locked on the neck portion of the spray head.
  • 2. The mold spray gun structure in accordance with claim 1, wherein the at least one plane portion of the inner wall of the locking recess includes a plurality of plane portions which are connected to form an arcuate shape.
  • 3. The mold spray gun structure in accordance with claim 1, wherein the at least one plane portion of the inner wall of the locking recess includes two opposite plane portions, and an arcuate portion integrally formed and located between the two opposite plane portions.
  • 4. The mold spray gun structure in accordance with claim 1, wherein the at least one plane portion of the neck portion of the spray head includes a plurality of plane portions which are connected to form a polygonal shape.
  • 5. The mold spray gun structure in accordance with claim 1, wherein the at least one plane portion of the neck portion of the spray head includes two opposite plane portions, and an arcuate portion integrally formed and located between the two opposite plane portions.
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6341736 Liao Jan 2002 B1