公开(公告)号：US20150158550A1

公开(公告)日：2015-06-11

申请号：US14624113

申请日：2015-02-17

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Masafumi KAWAKAMI ,  Munehiro DATE

IPC: B62M6/55 ,  B62M6/45

CPC classification number: B62M6/55 ,  B62M6/45

Abstract: A power-assisted bicycle is provided to satisfactorily keep torque detection capability while reducing the pedal force of a pedal during pedaling if a battery has run out. A cylindrical human-power transmission member 28 having a magneto-striction generation portion 31b of a torque sensor 31 is disposed on the outer periphery of a crankshaft 7a. A combined force member 29 for combining a human driving force and an auxiliary driving force is disposed on the outer periphery of the crankshaft 7a. An auxiliary-driving-force transmission path from a motor 21 to the combined force member 29 has a deceleration mechanism 25 that includes a plurality of reduction gears 36c and 36d and reduction gear support shafts 36a and 36b. A one-way clutch 37 for interrupting a human driving force is disposed between the reduction gears 36c and 36d and the reduction gear support shafts 36a and 36b.

Abstract translation: 提供动力辅助自行车以令人满意地保持转矩检测能力，同时在踩踏期间如果电池已经用尽时降低踏板的踏板力。 具有扭矩传感器31的磁致伸缩产生部31b的筒状人力传递部件28设置在曲轴7a的外周。 用于组合人力驱动力和辅助驱动力的组合力构件29设置在曲轴7a的外周上。 从马达21到组合力构件29的辅助驱动力传递路径具有减速机构25，减速机构25包括多个减速齿轮36c和36d以及减速齿轮支撑轴36a和36b。 用于中断人的驱动力的单向离合器37设置在减速齿轮36c和36d与减速齿轮支撑轴36a和36b之间。