Abstract:
The present air gun-tool relates to a multipurpose unit air gun-tool, taking the advantage of a combined snap securing adaptor, air gun-tool which can be changed with several special throttle components on a based common component into different functional air gun-tool for meeting the necessary of the working site and facilitating to carry so that the production cost is reduced.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a multipurpose unit air gun-tool, and more especially to a unit air gun that can be combined into different function air gun-tool rapidly and conveniently at will. 
     2. Description of Prior Art 
     In accordance with the conventional air gun-tools, such as spray guns, as shown in FIG. 15, inflating adaptors, dual spray guns for painting and cleaning shown in FIG. 16, pneumatic cocooning guns, pneumatic sandblasting gun, and so on, they are based on an air gun body  1  used for controlling turn-on or off the compressed air so that said compressed air passes through different function tool-head to get different effect and performance, but the most of them are designed into one piece for one function, although they are based on an similar air gun body individually designed with the same principle, and in the most time they have almost same high of use frequency, but they have not been integrated into one piece, therefore they have some existing shortcomings in practicing as follows: 
     1. Poor portability: as maintenance or installation, the users have to often carry several air gun-tools with them simultaneously, like an automotive mechanic often has to carry a blowing air gun for cleaning and an inflating air gun for inflating tires, an engine mechanic usually has to carry a blowing air gun for cleaning; a washing air gun for washing the inside and outside surface of engine; a mechanic always has to a blowing air gun, a sand-blasting gun for rusting removal, a pneumatic washing gun; a glass maintainer or a furrier should carry a blowing air gun and a pneumatic glue spray gun for cleaning and gluing processes, according to above description, every practice above-mentioned has to be equipped with more than two air gun-tools at least, simultaneously take apart or connection of the air pipe frequently for replacing said air gun-tools in working time, additionally said air gun-tools occupies big volume so as to inconveniently carry and use. 
     2. High cost: every air gun-tool is designed for a special function working as a special application tool to perform its single effect, although they have common components, like a component used for controlling the stream of compressed air cut in or out, but all independent special functional throttle components of pneumatic tools can not be integrated into built-up basic common component, so that the production cost is higher, so the price of all set of pneumatic tools is higher, the competitive capability of market is also relatively poorer. 
     OBJECTS AND SUMMARY OF THE INVENTION 
     It is therefore a main object of the present invention to provide a multipurpose unit air gun-tool, taking the advantage of a combined snap securing adaptor, said air gun-tool can be changed with several special throttle components on a based common component into different functional air gun-tool for meeting the necessary of the working site and facilitating to carry so that the production cost is reduced. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is an exploded view showing the unit adaptor of the present invention. 
     FIG. 2 is a sectional side view showing the combination state of said unit adaptor of the present invention. 
     FIG. 3 is an exploded side view showing connecting with an air tool (short blow pistol) of the present invention. 
     FIG. 4 is a sectional side view showing connecting with an air tool (short blow pistol) in the first embodiment of the present invention. 
     FIG. 5 is a scheme showing the use state in long distance blowpipe method of the present invention. 
     FIG. 6 is a scheme showing the use state in telescope blowpipe method of the present invention. 
     FIG. 7 is a scheme showing the use state in inflating component method of the present invention. 
     FIG. 8 is a scheme showing the use state of tin method for washing of the present invention. 
     FIG. 9 is a scheme showing the use state of bottle method for spraying glue coat of the present invention. 
     FIG. 10 is a scheme showing the use state of suction method for suctioning oil as an oil head of the present invention. 
     FIG. 11 is a scheme showing the use state of sandblasting method of the present invention. 
     FIG. 12 is a scheme showing the use state of gravity sand blasting method of the present invention. 
     FIG. 13 is a scheme showing the securing connection of the present invention. 
     FIG. 14 is a scheme showing the securing connection in the other embodiment of the present invention. 
     FIG. 15 is a scheme showing a blowing gun of the prior art. 
     FIG. 16 is a scheme showing a cleaning air gun of the prior art. 
    
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS 
     Referring to FIG.  1  and FIG. 2, the present invention is comprised of a snap securing combined adaptor  10 , in which one end is secured to a gun body  20 , controlling compressed air to cut in or out, through a retaining bolt  21  with an inside through hole  211  at the outlet for securing said combined snap adaptor  10 ; wherein said combined snap adaptor  10  includes a sleeve bolt  11  having a through-hole  111  for passing through the stream of compressed air, and a flange  113  having a pivoting connection portion  114  at one side for connecting to a shuttle nut  12  in pivoting connection, on the another side of said flange  113  there is a ball connection portion  115 , and a socket  116  is built on the tip end of said ball connection portion  115  at approaching the terminal end of said through-hole  111  for securing on by screwing a socket screw wrench gearing in it, and a guide hole  117  a little bit bigger than said socket  116  is built upon the outside of said socket  116  at the terminal end of said through-hole  111  for leading the flow of compressed air out smoothly; said sleeve bolt  11  holding said shuttle nut  12  freely is secured on said retaining bolt  21  with a threaded end  112 ; said shuttle nut  12  has at least one pair of ribs  121  built on the outside surface axially for grasping to turn rapidly, and a pivoting hole  122  built upon one end for putting on the pivoting connection portion  114  of said sleeve bolt  11  in pivoting connection state, and an internal threaded hole  123  built upon the another end of said shuttle nut  12  for securing on different function throttle component, so that, when said sleeve bolt  11  is secured on said retaining bolt  21  with said threaded end  112 , a gap space d between the opposite terminal surfaces of said pivoting connection portion  114  and said retaining bolt  21  is left a bit more than the length of said pivoting hole  122  so that the shuttle nut  12  can be moved a bit freely; by touching against between the shoulder  124  of said pivoting hole  122  at the end of said internal threaded hole  123  with said flange  113  of said sleeve bolt  11 , said shuttle bolt  12  is limited in the front end for sliding. 
     In accordance with above-description, by taking the advantage of the free rotation and slide state of said shuttle bolt  12 , and the ball connection portion  115  of said sleeve bolt  11  extended into the inside of said shuttle bolt  12 , quick taking up or apart different pneumatic tool components becomes easy, the detail description is in follows: 
     The embodiments of connecting to different pneumatic tool component: 
     By the combined snap securing adaptor  10  attached on the tip end of said gun body  20 , different pneumatic tool components can be replaced rapidly, as shown in FIG. 3, a pneumatic tool component  30  (a short blow pistol) has an external screw end  31  that can be secured into the inside of said shuttle bolt  12  to connect to the ball connection portion  115  of said sleeve bolt  11  in bell joint by a bell socket  32  built on the inside at the back end, for sealing the contacting portion between of them tightly, said bell socket  32  has a tapered edge along the rim; by means of the free setting state of said combined snap securing adaptor  10 , said pneumatic tool component  30  (a short blow pistol) can be fastened in place rapidly by the user turning the shuttle bolt  12 , as shown in FIG. 4, to combine a short blow air gun with the combined short blow pistol  41 ; as disassembling the pneumatic tool component  30 , turning the shuttle bolt  12  in contra-rotation is the only thing to be done, so the operation is easy and rapid. 
     According to this, different pneumatic tool components just have a standard external thread, a bell socket and a tapered edge on said bell socket so that they can be fastened or dismantled on rapidly by turning said combined snap-securing adaptor  10  in forward or backward. Referring to FIG. 5, a long-distance blowpipe  42  having an external thread  421 , a bell socket  422  with a tapered edge  423  can be combined to said gun body  20  to form a long blow air gun for using. 
     Or securing a telescope blowpipe  43 , as shown in FIG. 6, combines a telescope blow air gun. 
     Or as shown in FIG. 7, combining an inflating head  44  forms an inflating air gun to inflate tires. 
     Or as shown in FIG. 8, a washing head  45  is combined to form a siphon spray washing gun by siphoning scavenger from a container and mixing with compressed air to spray out at high speed to clean the desired place in efficient. 
     Or as shown in FIG. 9, attaching a spray glue head  46  combines a spray glue gun by sucking glue from the container with the airless generated by the high speed flow of the compressed air and mixing with compressed air to be sprayed on the surface of working piece to create a glue coat for binding process. 
     Or as shown in FIG. 10, combining a suction head  47  forms a suction oil air gun, by stretching the suction pipe  471  into an oil tank, or an engine gear box, or a gear box of other machine, or hydraulic fluid box and so on, under the airless pressure created in said suction pipe  471  by the high speed compressed air, the oil is sucked out from the gear box to transfer into a oil container  472 , meanwhile the lighter air is brought out by compressed air from the oil to carry out separating air from oil. 
     Referring to FIG. 11, a sand blast head  48  is combined to form a pneumatic sand-blast gun by sucking sand via a suction pipe  481  and being sprayed out following compressed air to perform sand-blasting process; or taking a sand container  482  set on the top side in upward down instead of said suction pipe  481  to form a gravity sand-blasting gun (as shown in FIG.  12 ) so as to ride off the limitations of working site to operate in any place with higher mobility. 
     In reference with FIG. 13, said connection portion  511  of said sleeve bolt  51  is taken the taper cone shape coordinating to the bell socket  32  on terminal end of the external thread end of said pneumatic tool component  30  in the same taper for getting the better sealing efficiency. 
     Additionally, referring to FIG. 14, said connection portion  611  is appeared into straight rod shape, and attached with a seal O-ring at outside surface, coordinating to it said pneumatic tool component  30  has a straight hole  321  built on the external thread  31  end, within the diameter of said straight hole  321  is a bit bigger than said rod connection portion  611 &#39;s, so that said O-ring  612  can seal between of them as assembling.