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    • 9. 发明公开
    • Structure of crankshaft for internal combustion engine
    • Struktur einer Kurbelwellefüreine Brennkraftmaschine
    • EP2889496A1
    • 2015-07-01
    • EP14199542.3
    • 2014-12-22
    • HONDA MOTOR CO., LTD.
    • Kamiya, MitsuyoshiHarada, MotokiMukouhara, Hodaka
    • F16C3/08F16C3/14F16C11/02F16C9/04
    • F16C3/08F16C3/14F16C9/04F16C2360/22Y10T74/2174
    • [Object] To provide a structure of a crankshaft for an internal combustion engine capable of improving the durability of the crankshaft by facilitating stress relaxation to avoid stress concentration as much as possible.
      [Solving Means] Provided is a structure of a crankshaft (20) for an internal combustion engine, the crankshaft (20) being an integrated crankshaft (20) in which a thrust receiving surface (21s) is formed on each of crank arm parts (21a) around the root of a crankpin (23) in an annularly protruding manner to restrict axial movement of a connecting rod (8F, 8R). In the structure, a recessed portion (G) is formed in each of the facing surfaces of facing crank webs (21) at a position near a corner portion (A) continuing from the crankpin (23) to the crank arm part (21a), the position being so close to the crankpin (23) that part of the thrust receiving surface (21s) is cut away.
    • 提供一种用于内燃机的曲轴的结构,其能够通过促进应力松弛来提高曲轴的耐久性,以尽可能地避免应力集中。 [解决方案]提供一种用于内燃机的曲轴(20)的结构,曲轴(20)是一体式曲轴(20),其中在每个曲柄臂部分上形成有推力接收表面(21s) 21a)围绕曲柄销(23)的根部以环形突出的方式围绕,以限制连杆(8F,8R)的轴向移动。 在该结构中,在从曲柄销(23)向曲柄臂部(21a)延伸的角部(A)附近的位置处,在相对的曲柄腹板(21)的各面对面上形成有凹部(G) 所述位置与所述曲柄销(23)接近,所述推力接收表面(21s)的一部分被切除。