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    • 33. 发明授权
    • Stabilized bearing structure for supporting a crankshaft in an internal combustion engine, and engine including same
    • 用于支撑内燃机中的曲轴的稳定的轴承结构和包括其的发动机
    • US07114481B2
    • 2006-10-03
    • US10949822
    • 2004-09-24
    • Akira TakahashiTeruo KiharaYoichi Tanaka
    • Akira TakahashiTeruo KiharaYoichi Tanaka
    • F16C9/02F02B67/06
    • F16C35/06F02F7/0004F02F7/0053
    • An internal combustion engine includes a split crankcase with spaced-apart journal walls. Each journal wall has a bearing hole formed therein. The engine also includes rotary bearings for supporting rotary movement of a crankshaft. A backlash-absorbing mechanism is situated proximate a first one of the rotary bearings, for cushioning radial movement of an outer bearing race. Axial movement-restraining structure is also provided adjacent the outer race, for limiting axial movement thereof. The axial movement-restraining structure may include an engaging groove provided in an inner circumferential surface of the outer race, and a restraining clamp member operatively attached to a surface of the crankcase. The restraining clamp member may include a hook portion which engages with the engaging groove of the outer race. The axial movement-restraining structure allows at least one of the crankshaft support bearings to be a roller bearing or a needle bearing, instead of a ball bearing.
    • 内燃机包括具有间隔开的轴颈壁的分体式曲轴箱。 每个轴颈壁上都有一个轴承孔。 发动机还包括用于支撑曲轴的旋转运动的旋转轴承。 靠近第一个旋转轴承的间隙吸收机构用于缓冲外部轴承座圈的径向运动。 轴向运动限制结构也邻近外圈设置,以限制其轴向移动。 轴向运动限制结构可以包括设置在外圈的内周面中的接合槽和可操作地附接到曲轴箱的表面的限制夹紧构件。 限制夹紧构件可以包括与外圈的接合槽接合的钩部。 轴向运动限制结构允许至少一个曲轴支撑轴承是滚子轴承或滚针轴承,而不是球轴承。