PURPOSE: To provide a bicycle in which an air pump for a tire is integrated with a frame so as not to take up a lot of space, labor of attachment and detachment in using is dispensed with, omission of attachment is not generated, and replenishment of air can be performed at any time.
CONSTITUTION: In a bicycle 1, a bottom cover for hermetically dividing the inside of a seat pipe 2a from a hanger rack 2b is attached on the undermost part in the seat pipe 2a just above the hanger rack 2b of a frame 2, the seat pipe 2a is taken as a cylinder of an air pump, and a piston capable of being slid in the seat pipe 2a while holding airtightness is attached on the top of a seat post 4. A hole extending from the inside of the seat pipe 2a to the outer periphery is provided on the bottom cover and on the downmost part of the seat pipe 2a, a hose connecting fitting is screwed into it and taken as an air taking-out port. A hose 9 in which a mouthpiece 10 is attached on the tip is connected to the air taking-out port.
JPS6211088B2 | 1987-03-10 | |||
JPH0647092B2 | 1994-06-22 |