Operating mechanism for a multispeed bicycle hub

Details Operating mechanism for a multispeed bicycle hub Operating mechanism for a multispeed bicycle hub

1989-07-06

1990-08-14

Luong, Vinh T.

Machine element or mechanism

Control lever and linkage systems

Hand operated

745022, 474 82, F16C 110

Patent

active

049477030

ABSTRACT:
A multispeed bicycle hub is controlled by two speed change rods extending within a bore of the hub shaft towards one end of this bore. An operating mechanism is fixed on the respective end of the hub shaft. This operating mechanism comprises two cam discs acting onto the speed change rods. The cam discs are rotated by a transmission cable from a speed change switch. The cam discs are rotatable about a common cam disc axis by the transmission cable. The cam discs are provided with respective cam tracks which are located adjacent each other in the axial direction of the cam pivot axis. The circumferential extension of the cam tracks is substantially coextensive about the cam pivot axis. The cam tracks act upon respective intermediate levers which intermediate levers are in engagement with the speed change rods.

REFERENCES:
patent: 863422 (1907-08-01), Newton
patent: 4193309 (1980-03-01), Nagano
patent: 4241617 (1980-12-01), Nagano et al.
patent: 4279605 (1981-07-01), Egami
patent: 4305712 (1981-12-01), Nagano
patent: 4306871 (1981-12-01), Nagano

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