- 专利标题： Continuously variable transmission device with device for varying the transmission curve
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申请号： US16334454申请日： 2017-09-19
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公开(公告)号： US11105408B2公开(公告)日： 2021-08-31
- 发明人: Paolo Nesti , Walter Mariotti , Giacomo Freschi
- 申请人： PIAGGIO & C. S.p.A.
- 申请人地址： IT Pisa
- 专利权人： PIAGGIO & C. S.p.A.
- 当前专利权人： PIAGGIO & C. S.p.A.
- 当前专利权人地址： IT Pisa
- 代理机构： Cantor Colburn LLP
- 优先权： IT102016000094759 20160921
- 国际申请： PCT/IB2017/055668 WO 20170919
- 国际公布： WO2018/055514 WO 20180329
- 主分类号： F16H55/56
- IPC分类号： F16H55/56 ; F16H9/12
摘要：
A CVT transmission device (1) comprises a drive pulley (4) provided with a mobile bushing (9), a fixed bushing (11), a cam system (95,111; 97,113) comprising at least one driven cam portion (95) of mobile bushing (9) and a cam portion (111) of the fixed bushing (11). The mobile bushing (9) comprises a main wall (91) annular with respect to the axis of rotation (X), having an inner surface (91a) which delimits a housing compartment (91c) and said driven cam portion (95) protrudes radially internally from said inner surface (91a). The drive cam portion (111) of the fixed bushing (11) is suitable to penetrate axially in said housing compartment of the mobile bushing (9).
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