Abstract

Provided are: a drive supplementing unit which is relatively compact and which can transmit high torque; and an electric assist device which is provided with the drive supplementing unit. A drive supplementing unit 10 supplements, with a motor 12, manual drive applied by a user to a power input shaft 11, and extracts power out of a power output shaft. Also, the drive supplementing unit 10 is provided with: a first clutch 14 which is rotated by the manual drive force of the user and which has a first clutch surface 17; a second clutch 15 which is rotated by the motor drive force of the motor 12 and which has a second clutch surface 18; and a third clutch 16 connected in a drivable manner to the power output shaft and which has a third clutch surface 19. Further, the first clutch surface 17 and the second clutch surface 18 face the third clutch surface 19 in the axial direction of the power input shaft 11, and the first clutch 14 and the second clutch 15 are arranged substantially concentric with each other.

IPC Classes  ?

• F16D 11/10 - Clutches in which the members have interengaging parts actuated by moving a non-rotating part axially with clutching members movable only axially
• B62M 6/55 - Rider propelled cycles with auxiliary electric motor power-driven at crank shafts parts
• B62M 11/02 - Transmissions characterised by use of interengaging toothed wheels or frictionally-engaging wheels of unchangeable ratio
• F16D 41/36 - Freewheels or freewheel clutches specially adapted for cycles with clutching ring or disc axially shifted as a result of lost motion between actuating members
• F16D 43/04 - Internally controlled automatic clutches actuated entirely mechanically controlled by angular speed
• H02K 7/10 - Structural association with clutches, brakes, gears, pulleys or mechanical starters

Goods & Services

Measuring or testing machines and instruments. Two-wheeled motor vehicles and their parts and fittings; automobiles and their parts and fittings. Retail services or wholesale services for automobiles; retail services or wholesale services for two-wheeled motor vehicles; retail services or wholesale services for bicycles; retail services or wholesale services for electrical machinery and apparatuses. Designing of machines, apparatus, instruments [including their parts] or systems composed of such machines, apparatus and instruments; designing; computer software design, computer programming, or maintenance of computer software; technological advice relating to computers, automobiles and industrial machines; research and development services by temporary staffs relating to automobiles, two-wheeled motor vehicles, aircrafts, agricultural machines, agricultural implements, outboard motors and snow ploughs.

Goods & Services

Measuring and testing machines and instruments which measure and test physical data used for research and development of automobiles, motorcycles, agricultural machinery, outboard motors Two-wheeled motor vehicles and their parts and fittings; automobiles and their parts and fittings Retail store services and wholesale ordering services for automobiles; retail store services and wholesale ordering services for two-wheeled motor vehicles; retail store services and wholesale ordering services for bicycles; retail store services and wholesale ordering services for electrical machinery and apparatuses Designing of machines, apparatus, instruments including their parts or systems composed of such machines, apparatus and instruments; new product designing services, graphic designing, machine part designing services; computer software design, computer programming, and maintenance of computer software; technological advice relating to computers, automobiles and industrial machines; research and development services by temporary staffs relating to automobiles, two-wheeled motor vehicles, aircraft, agricultural machines, agricultural implements, outboard motors and snow plows