Handle stem fixing device in a bicycle

Details Handle stem fixing device in a bicycle Handle stem fixing device in a bicycle

1996-03-29

1997-11-18

Luong, Vinh T.

Machine element or mechanism

Control lever and linkage systems

Elements

280279, B62K 2112

Patent

active

056876165

ABSTRACT:
In a handle stem fixing device in a bicycle wherein a fork stem 10 is rotatably inserted into a head pipe 20 of a frame 2, the upper portion of the fork stem 10 projects out from the upper end of the head pipe 20 and, a stem-binding cylinder 30 is fixed on the upper portion of the fork stem 10 so as not to rotate. Many small protrusions are formed on the outer surface of the fork stem 10 where is pressed by the stem-binding cylinder 30. The coefficient of friction between contact surfaces of the fork stem 10 and the stem-binding cylinder 30 increases because of the protrusions. The coupling power acting between the fork stem 10 and the stem-binding cylinder 30 can thus be improved.

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