发明公开
- 专利标题： MEHRGANG-GETRIEBE FÜR FAHRRÄDER
- 专利标题（英）： Multispeed bicycle gear system
- 专利标题（中）： MEHRGANG-GETRIEBEFÜRFAHRRÄDER
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申请号： EP98933552.0申请日： 1998-05-15
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公开(公告)号： EP0915800A1公开(公告)日： 1999-05-19
- 发明人: ROHLOFF, Bernhard
- 申请人： ROHLOFF, Bernhard
- 申请人地址： Mönchebergstrasse 30 34125 Kassel DE
- 专利权人： ROHLOFF, Bernhard
- 当前专利权人： ROHLOFF, Bernhard
- 当前专利权人地址： Mönchebergstrasse 30 34125 Kassel DE
- 代理机构： Freiherr von Schorlemer, Reinfried, Dipl.-Phys.
- 优先权： DE19971020796 19970516
- 国际公布： WO1998052818 19981126
- 主分类号： B62M11
- IPC分类号： B62M11 ; F16H3
摘要：
The invention relates to a multispeed gear system for bicycles. The gear system contains an axle (1) which is rotationally fixed on a bicycle frame, a drive mechanism (7) which is rotationally mounted on the axle (1), a sleeve (12) which is rotationally mounted on the axle (1) and a switch gear mounted in the sleeve (12) and fitted with a first and a second planetary gear train (15, 16) to provide several transmission ratios between the drive mechanism (7) and the sleeve (12). Both planetary gear trains (15, 16) have at least two sun gears (19, 20 or 22, 23) which are coaxial to the axle (1) and which can be selectably connected to the axle (1) in order to choose the transmission ratios by means of a shifting device. According to the invention, the shifting device also has means (31, 32) enabling selective connection of the ring gear (24, 25) or the sun wheel (17, 21) of the first and/or second planetary gear train (15, 16) to a sun gear (19, 22) of the same planetary gear train (15, 16).
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