Bicycle drive unit

专利名称：Bicycle drive unit发明人：Sugimoto, Masanori申请号：EP05007190.1申请日：20050401公开号：EP1582450A3公开日：20070822

专利附图：

摘要：A bicycle drive unit (15) is disclosed that includes a case frame (20), crank shaft(21), front sprocket (22), rear hub shaft (23) and rear sprocket (24). The crank shaft (21)includes first and second support portions (21a, b) that are spaced apart from oneanother and are supported on opposite lateral sides of a forward portion of the case

frame (20). The first and second support portions (21a, b) are engaged with bearings (33a,b) supported on opposite sides of the interior of the case frame (20). The front sprocket(22) is installed on the crank shaft (21) within the case frame (20) and between the firstand second support portions (21a, b). The rear hub shaft (23) includes a third and fourthsupporting portions (23a, b) that are spaced apart from one another with the rearsprocket (24) installed on the rear hub shaft (23) there between.

申请人：SHIMANO INC.

地址：3-77 Oimatsu-cho, Sakai-ku, Sakai City Osaka 590-8577 JP

国籍：JP

代理机构：GROSSE BOCKHORNI SCHUMACHER

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