Title:
CRANKSHAFT OF RECIPROCATING ENGINE
Document Type and Number:
WIPO Patent Application WO/2015/190117
Kind Code:
A1
Abstract:
A crankshaft (1) is provided with a journal part (J) as a rotational center axis, a pin part (P) eccentric from the journal part (J), and a crank arm part (A) joining the journal part (J) and the pin part (P). The arm part (A) includes a journal thrust part (Jt) and a pin thrust part (Pt). In the arm part (A), the maximum diametrical length (y) from the rotational center (CL) to the outer periphery of a pin top part (Apt) is less than the combined length of the crank radius (Rc) and the radius (Rpt) of the pin thrust part (Pt). The weight can thereby be reduced while the rigidity of the crank arm part is ensured, and the gravity center radius of the crank arm part can be dramatically reduced. Additionally, the crankshaft can be easily manufactured.
Inventors:
YOSHINO KEN (JP)
YABUNO KUNIHIRO (JP)
ISHIHARA KOICHIRO (JP)
ISHII TADANAO (JP)
YABUNO KUNIHIRO (JP)
ISHIHARA KOICHIRO (JP)
ISHII TADANAO (JP)
Application Number:
PCT/JP2015/002958
Publication Date:
December 17, 2015
Filing Date:
June 12, 2015
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
F16C3/06; F16C3/08; F16C3/14
Foreign References:
| JPS5973618A | 1984-04-25 | |||
| JPS4421125Y1 | 1969-09-08 | |||
| JPS4624082B2 | ||||
| JPS3825101B1 | ||||
| JP2002227821A | 2002-08-14 |
Attorney, Agent or Firm:
ASCEND IP LAW FIRM (JP)
アセンド patent business corporation (JP)
アセンド patent business corporation (JP)
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