发明公开
- 专利标题： INTERNAL COMBUSTION ENGINE AND STRADDLE-TYPE VEHICLE EQUIPPED WITH THE ENGINE
- 专利标题（中）： 内燃机和发动机的交通工具用座椅
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申请号： EP15164483.8申请日： 2015-04-21
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公开(公告)号： EP2942536A1公开(公告)日： 2015-11-11
- 发明人: Takahashi, Tatsuya
- 申请人： Yamaha Hatsudoki Kabushiki Kaisha
- 申请人地址： 2500 Shingai Iwata-shi, Shizuoka-ken 438 JP
- 专利权人： Yamaha Hatsudoki Kabushiki Kaisha
- 当前专利权人： Yamaha Hatsudoki Kabushiki Kaisha
- 当前专利权人地址： 2500 Shingai Iwata-shi, Shizuoka-ken 438 JP
- 代理机构： Moreland, David
- 优先权： JP2014095700 20140507
- 主分类号： F16C3/10
- IPC分类号： F16C3/10 ; F16C3/20
摘要：
A crankshaft has a first crank web (31) and a first extension shaft (37) protruding from the first crank web (31). The first crank web (31) has a first hole (43) in which a crank pin is press-fitted. A left surface (41) of the first crank web (31) has a first inner peripheral edge portion (41 B) positioned around the first hole (43), and a first recessed portion (41 C) recessed relative to the first inner peripheral edge portion (41 B). An upper end of the first recessed portion (41 C) is positioned upward relative to a lower end (43b) of the first hole (43), and a lower end of the first recessed portion (41 C) is positioned downward relative to the lower end (43b) of the first hole (43).
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