| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bicycle frame structure by which a high-rigidity frame and a high-rigidity luggage carrier can be configured regardless of a predetermined mounting width of a back fork. <P>SOLUTION: A bicycle frame structure includes: a seat pipe 7; a back nail 9 pivoting a rear wheel 16; a back fork 8 disposed from the back nail 9 or the vicinity of the back nail 9 to the seat pipe 7; and an annular connection member 4 disposed in a terminal of the back fork 8 at a side opposite to the back nail 9 and connecting the back fork 8 and the seat pipe 7. Intervals of the annular connection members 4 in an axle direction are made approximately equal to intervals of right and left back nails 9 pivoting the rear wheel 16. <P>COPYRIGHT: (C)2013,JPO&INPIT |
