| 摘要 |
To provide a motor-fixing structure for an assist unit, said structure allowing the assist motor to generate a high output (or a high torque), without the assist motor increasing in size. The motor-fixing structure has an assist unit (16) including a unit case (50), a brushless motor (15) installed in either of left and right casings (51 and 52), a pinion gear (58) formed on the motor shaft (57) of said brushless motor (15). The brushless motor (15) has its motor yoke part (75) to hold its stator (85) formed from a metallic sheet material, and the brushless motor (15) has its one end of its motor shaft (57) supported on said motor yoke part through a bearing (92). The bearing (92) at one end is positioned within the width of the crankshaft bearing (20L) installed to support the pedal crankshaft (17) on the left and right casings (51, 52), and the motor yoke part (75) is fixed by fitting to said one casing (52) with the outer diameter part of said stator (85). |
