Mounting structure for flangeless fuel tank

Abstract

An improved mounting structure for a flangeless fuel tank forcibly maintains an air-tightness at joined parts between top and bottom halves of a tank when the fuel tank is welded, thereby reducing the space and weight of the tank. The fuel tank is increased in capacity as much as a space of a flange can be adopted. The mounting structure comprises a top half of a tank protrusively formed at a lower external lateral surface thereof with a plurality of studs, a bottom half of a tank formed with grooves corresponding to the plurality of studs and partially inserted into the lower distal end of the top half of the tank, and fastening members for being fastened to the studs of the top half of the tank so that the top and bottom halves of the tank can be air-tightly welded.

1 . A mounting structure for a flangeless fuel tank in which a lower circumferential end of a top half of a tank ( 110 ) is partially inserted to an inner upper circumferential surface of a bottom half of a tank ( 120 ) and an overlapped portion therebetween is integrally welded, wherein a plurality of studs ( 115 ), each spaced out therebetween, are protrusively formed at the external lower end surface of said top half of the tank ( 110 ), and a plurality of grooves ( 125 ) are formed at the upper end of said bottom half of the tank ( 120 ) to accommodate the plurality of said studs ( 115 ), and a plurality of fastening members ( 210 ) are used for being fastened to a distal end of each said stud ( 115 ) and for fastening a joined part between said top half of the tank and said bottom half of the tank ( 110 ,  120 ).  
   
   
       2 . The mounting structure according to  claim 1 , further comprising protrusive stoppers ( 122 ) formed at the inner surface of said bottom half of the tank ( 120 ), each said protrusive stopper distanced from the upper end of said bottom half of the tank ( 110 ).  
   
   
       3 . The mounting structure according to  claim 1 , wherein each said fastening member ( 210 ) is formed with a hollow hole ( 212 ) formed with female threads corresponding to male threads formed at a circumferential surface of said stud ( 115 ), and the external end of said hollow hole ( 212 ) is further formed with a flange ( 215 ) for contacting the external surface of said bottom half of the tank ( 120 ).