| 摘要 |
The invention relates to an improved arrangement of an air pump which can be inserted into the seat pillar ( 50 ) of a bicycle and which comprises a cylinder ( 2 ), a piston with a piston rod ( 3 ), a handle ( 4 ) and an air outlet valve ( 5 ) which is displaceably connected to the cylinder ( 2 ). According to the invention, a deformable element ( 6 ) is provided between the cylinder ( 2 ) and the air outlet valve ( 5 ), the diameter (d) thereof being able to be increased by flipping over the air outlet valve ( 5 ) such that the longitudinal axis (A) of the cylinder ( 2 ) and the longitudinal axis (a) of the air outlet valve extend in an at least substantially parallel manner. The air pump ( 1 ) can be blocked in the seat pillar ( 50 ).
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