Abstract:
A gas adapter on the gas outlet port of a gas canister includes a joint mount connected to the canister, an adapter unit, an elastic part provided between the joint mount and the adapter unit, and a fixture part that fixes the adapter unit to the joint mount. The adapter unit includes a capacity tank. Axially along two ends of the capacity tank, a first adapter tube and a second tube are provided respectively. The first adapter tube passes through into the joint mount and stays near the gas outlet port of gas canister. The second adapter tube passes axially through the joint mount. Thus, a user may fill the lubricant into the capacity tank and use the gas led from the gas canister through the adapter unit to take the lubricant in the capacity tank and then infuse it into loader for simplification of the procedure.

Description:
BACKGROUND OF THE INVENTION 
       [0001]    1. Field of the Invention 
         [0002]    This invention relates to a gas adapter for airsoft applications. 
         [0003]    2. Description of the Prior Art 
         [0004]    When filling the gas in a conventional gas gun, lubricant is added for the enhanced effect of lubrication and maintenance. However, in the manner of applying the lubricant, generally, the lubricant is infused into the connector of a gas valve and then, when the gas is filled, the lubricant may or may not enter into a loader together with the gas. Although the lubricant may be filled into the loader in such a manner, the connector must be detached each time lubricant is infused; the issues of more complicated procedure, low convenience, aptness to leakage and waste of lubricant are brought. Thus, improvement is necessarily made. 
         [0005]    Consequently, because of the technical defects of described above, the applicant continues to persist tirelessly through vast experience and research to develop the present invention, which can effectively improve the defects described above. 
       SUMMARY OF THE INVENTION 
       [0006]    A gas adapter according to this invention is affixed on the gas outlet port of a gas canister and mainly comprises a joint mount connected to the canister, an adapter unit, an elastic part provided between the joint mount and the adapter unit, and a fixture part that fixes the adapter unit to the joint mount. The joint mount is provided with a thru hole. The adapter unit is fixed into the thru hole of joint mount and mainly comprises a capacity tank. Axially along two ends of the capacity tank, a first adapter tube and a second tube are provided, respectively. The first adapter tube passes through into the thru hole, stays near the gas outlet port of gas canister, and has a first passage communicating with the capacity tank; further, The second adapter tube axially passes outwards through the thru hole, has a second passage communicating with the capacity tank, and pushes the first adapter tube to touch and drive the gas canister. 
         [0007]    Thus, a user may first fill the lubricant into the capacity tank and use the gas led from the gas canister through the first adapter tube to take the lubricant in the capacity tank through the second adapter tube and then infuse it into loader for simplification and completely mixed gas and lubricant of the conventional complicated infusion procedure and enhancement of the performance and convenience of use, and no waste of lubricant. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0008]      FIG. 1  is a 3D exploded view of a preferred embodiment of this invention; 
           [0009]      FIG. 2  is a sectional assembly view of the preferred embodiment of this invention; 
           [0010]      FIG. 3  is a sectional view of a gas canister assembled with a loader in the preferred embodiment of this invention; 
           [0011]      FIG. 4  is a schematic view illustrating the service state of the gas canister assembled with the loader in the preferred embodiment of this invention; 
           [0012]      FIG. 5  is a 3D exploded view of a second preferred embodiment of this invention; 
           [0013]      FIG. 6  is a sectional assembly view of the second preferred embodiment of this invention; 
           [0014]      FIG. 7  is a 3D view of a fixture part applied in the second preferred embodiment of this invention; 
           [0015]      FIG. 8  is a 3D exploded view of a third preferred embodiment of this invention; and 
           [0016]      FIG. 9  is a sectional assembly view of the third preferred embodiment of this invention. 
       
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
       [0017]    Now, the present invention will be described more specifically with reference to the following embodiments. It is to be noted that the following descriptions of preferred embodiments of this invention are presented herein for purpose of illustration and description only; it is not intended to be exhaustive or to be limited to the precise form disclosed. 
         [0018]    Firstly, with reference to  FIGS. 1 and 2  shown respectively as a 3D exploded view and a sectional assembly view of a preferred embodiment of this invention, a gas adapter mainly comprises a joint mount  10 , an elastic part  20 , an adapter unit  30 , a fastening ring unit  40 , and a fixture part  50 . 
         [0019]    The joint mount  10  that is a polygonal cap the top side of which is formed with a pivot sheath  11 . An annular  111  is formed around the circumference of pivot sheath  11 , and a round thru hole  112  is defined in the middle of pivot sheath  11 . Two rectangular guidance grooves  113  opposite to each other are formed axially from outside to inside on the inner circumferential wall of thru hole  112 ; a shift limit ring  114  is inwards provided in radial around the bottom of thru hole  112 . In a preferred embodiment of this invention, the joint mount  10  is fully molded and made of plastics. 
         [0020]    The elastic part  20  is provided in the thru hole  112  of pivot sheath  11  and abuts against the top side of shift limit ring  114 . In the preferred embodiment of this invention, the elastic part  20  is a compression spring. 
         [0021]    The adapter unit  30  passes through into the thru hole  112  of pivot sheath  11 , abuts against the elastic part  20 , comprises a first adapter  31  and a second adapter  32  connected to the first adapter  31 . 
         [0022]    The first adapter  31  comprises a first joint portion  311 . A flange  312  is provided in radial around the middle section of outer circumferential wall of the first joint portion  311 . A shift limit lug  313  opposite to the guidance groove  113  is provided on the outer circumferential wall of the flange  312 . The shift limit lug  313  is approximately formed into a rectangular rib. Further, a first adapter tube  314  is provided outside an axial end of the first joint portion  311 , and a first passage  315  is formed inside the first adapter tube  314 . Two approximately triangular wedge lugs  316  opposite to each other are formed on the outer circumferential wall of the first adapter tube  314 . 
         [0023]    The second adapter  32  comprises a second joint portion  321 . A second adapter tube  322  is provided stretching outwards at an axial end of the second joint portion  321 , and a second passage  323  is formed inside the second adapter tube  322 . Besides, an annular groove  32  is formed on the outer circumferential wall of second adapter tube  322 . The second joint portion  321  joins the first joint portion  311 , between which an O-shaped ring  33  is provided for achievement of preferred airtight capability. A capacity tank  34  is defined between the first joint portion  311  and the second joint portion  321 . In the preferred embodiment of this invention, the first adapter tube  314  communicates with the capacity tank  34  and the second adapter tube  322 . The adapter unit  30  is fully molded and made of plastics. 
         [0024]    The fastening ring group  40  comprises a first fastening ring  41  and a second fastening ring  42  that are connected to each other, and the first fastening ring  41  is arranged around in the annular groove  111  of the joint mount  10  and the second fastening ring  42  is arranged around in the annular groove  324  of the second adapter  32 , respectively. A tie line  43  is provided between the first fastening ring  41  and the second fastening ring  42  to prevent the second adapter  32 , when being removed, from loosing and falling. In the preferred embodiment of this invention, the fastening ring group  40  is flexible. 
         [0025]    The fixture part  50  comprises a round retainer clamp  51 . The retainer clamp  51  wedges between the first joint portion  311  and the wedge lug  316  and abuts against the bottom side of shift limit ring  114  of the joint mount  10 . A thru hole  511  is formed in the middle of retainer clamp  51 . Two thru holes  512  opposite to each other are formed in radial and stretch outwards from the thru hole  511 . 
         [0026]    With reference to  FIGS. 1 and 2 , the elastic part  20  is provided in the thru hole  112  of pivot sheath  11 . The first adapter  31  and the second adapter  32  join together, and the shift limit lug  313  of first adapter  31  is used to pass through into the thru hole  112  along the guidance groove  113  of the pivot sheath  11 . An effect of shift limit is caused between the guidance groove  113  and the shift limit lug  313 . Further, The flange  312  of first adapter  31  abuts against the elastic part  20  for generation of upward elastic support. The first adapter tube  314  of first adapter  31  passes through the shift limit ring  114  of the joint mount  10  and through the first adapter tube  314  via the thru hole  511  of retainer clamp  51 , further making the rectangular thru hole  512  pass through the wedge lug  316 . Besides, it is turned at an angle to fix the wedge lug  316  to the bottom of retainer clamp  51 , which is in an initial state. 
         [0027]    With reference to  FIGS. 3 and 4 , the joint mount  10  is connected to a gas canister  200 . The gas canister  200  is provided with a gas outlet port  210 . The first adapter tube  314  is opposite to the gas outlet port  210 . The second adapter tube  322  at the other end of the first adapter tube  314  is connected to a loader  300 . When it is used, a lubricant  400  is infused into only the capacity tank  34  between the first adapter  31  and the second adapter  32  to make the loader  300  push down the second adapter tube  322  and indirectly drive the first adapter tube  314  to move downwards and further connect to connect to the gas outlet port  210  of gas canister  200  so that the gas in the gas canister  200  may be infused into the loader  300  from the gas outlet port  210  through the first passage  315 , the capacity tank  34 , and the second passage  323 ; when the gas in the gas canister  200  is infused into the loader  300 , the lubricant  400  in the capacity tank  34  may be led into the loader  300  at the same time. When the gas filling is finished and no pressure is applied to the second adapter  32 , the elastic part  20  upwards abut against the first adapter  31  and the initial state returns. 
         [0028]    Refer to  FIGS. 5 and 6  shown respectively as a 3D exploded view and a sectional assembly view of a second preferred embodiment of this invention. The major structure and effect in the embodiment is the same as that in the previous preferred embodiment, so unnecessary details are not given here. What is significantly different is one end of the elastic part  20  is wedge into the thru hole  112  of the pivot sheath  11 , and the other end that axially stretches downwards to the top fringe of gas canister  200 . The first adapter  31  is connected to the second adapter  32  and passes through into the thru hole  112  of the pivot sheath  11 . The flange  312  of first adapter  31  abuts against the elastic part  20 . The adapter tube  314  passes through the shift limit ring  114  and stays opposite to the gas outlet port  210  of gas canister  200 . Further, an oil outlet  325  communicating with the capacity tank  34  is formed on the outer circumferential wall of second joint portion  321  to infuse the lubricant  400  into the capacity tank  34 , and the oil outlet  325  is spirally formed with a spiral connection rod  326 . Further, the fixture part  50  is provided in the thru hole  112  of the pivot sheath  11 . The fixture part  50  comprises a fixture tube  52 . The fixture tube  52  has a thru hole  521  communicating with the thru hole  112  and passes through outside the second adapter  32 . An annular wedge fringe  522  is inwards formed in radial on the inner wall of the top side of thru hole  521 . The wedge fringe  522  is wedged to the top side of flange  312  of the first adapter  31 . 
         [0029]    Refer to  FIG. 7  as a 3D view of the other fixture part applied in a second preferred embodiment of this invention. The major structure and effect in the embodiment is the same as that in the second preferred embodiment, so unnecessary details are not given here. What is significantly different is the fact that the fixture part  50  comprises a plurality of stoppers  53  structured with four stop points, provided at the top fringe of thru hole  112  of the pivot sheath  11 , and wedged to the top side of flange  312  of the first adapter  31 . 
         [0030]    Refer to  FIGS. 8 and 9  shown respectively as a 3D exploded view and a sectional assembly view of a third preferred embodiment of this invention. The major structure and effect in the embodiment is the same as that in the previous preferred embodiment, so unnecessary details are not given here. What is significantly different is the fact that a guidance groove  113  is formed axially on the inner circumferential wall of thru hole  112  of the pivot sheath  11 , the shift limit lug  313  opposite to the guidance groove  113  is provided on the flange  312  of the first adapter  31  and in the form of a round cylinder, and the shift limit lug  313  of first adapter  31  is used to pass through into the thru hole  112  along the guidance groove  113  of the pivot sheath  11  and cause an effect of transversal shift limit; further, outer threads  317  are formed on the outer circumferential wall of the first adapter tube  314 ; the fixture part  50  is spirally set around and fixed to the first adapter tube  314 , and comprises a cushion  54  and a screw nut  55 , in which the cushion  54  passes through and spirally fixes the first adapter tube  314  through the outer threads  317  of the screw nut  55  and first adapter tube  314  to firmly stays between the bottom of shift limit ring  114  and the screw nut  55 . 
         [0031]    While the invention has been described in terms of what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention needs not be limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures.