摘要:
A drive unit for an electric bicycle, the drive unit including a motor configured to generate a rotary force to drive a wheel of the electric bicycle, and a reduction gear unit provided with a plurality of gears to decelerate a rotary force generated from the motor, wherein the motor is provided with a rotor (501) which has an accommodation space formed at a center thereof and a stator (506) installed to surround the rotor (501) while being spaced apart from the rotor (501) by a predetermined interval, and the reduction gear unit includes a first planet gear assembly (510) disposed on an accommodation space inside the motor (500) and connected to the rotor (501), and a second planet gear assembly (520) disposed outside the motor (500) and connected to the first planet gear assembly (510).
摘要:
A robust and reliable multi-speed gear system for use on pedally or other manually propelled vehicles, comprising simple epicyclical sections 82, 83, 23 in a complex structure, an internal axial tunnel enabling use of a detachable, vertical shear force load carrying through-bolt 15, a rotatable shift axle 25, a main shaft 7 non-rotatably mounted to the vehicle frame 10, axially floating shift mechanisms 20, 22, 65, and a hub shell 1 fully enclosing the gear mechanisms. The multispeed hub is robust, light, easily manufactured, offers many speeds and great gear width, and is rigidly securable to the vehicle frame.
摘要:
The invention relates to a hub transmission for a bicycle comprising: - a hub axle (10); - a driver (11) rotatably supported by the hub axle (10); - a hub shell (12) rotatably supported by the hub axle (10); - a power transmission mechanism (13) disposed between the driver (11) and the hub shell (12) for communicating rotational power from the driver (11) to the hub shell (12) through a plurality of power transmission paths; and - a shift mechanism (14) for selecting one of the plurality of power transmission paths.
To reduce shifting shocks, the inventive hub transmission further comprises a power transmission auxiliary mechanism (15) disposed between the driver (11) and the hub shell (12) for communicating rotational power from the driver (11) to the hub shell (12).
摘要:
An internal speed changing hub is provided with a hub shaft 21 that is affixed to a frame, a drive part 22, a driven part 23, a planetary gear mechanism 24, a first one-way clutch 25, a second one-way clutch 26, a clutch control mechanism 27, first and second bearings 28, 29, third and fourth bearings 30, 31. The drive part is a tubular shape that can be connected to an input part. The driven part can be connected to an output part. The drive transmission mechanism has a planetary gear mechanism, and transmits rotation from the drive part to the driven part. The first one-way clutch transmits rotation from the carrier in one direction to the driven part. The second one-way clutch can engage and disengage the drive part and the driven part. The first and second bearings are provided with first and second bearing cones 28b, 29b installed at intervals in the axial direction of the hub shaft; first and second bearing cups 28a, 29a disposed so they can oppose the positions of the first and second bearing cones of the driven part, respectively; and first and second ball bearings 28c, 29c installed so that both of these can make contact. The third and fourth bearings are installed so that the drive part can rotate freely relative to the hub shaft.
摘要:
The invention relates to a multispeed gear system for bicycles. The gear system contains an axle (1) which is rotationally fixed on a bicycle frame, a drive mechanism (7) which is rotationally mounted on the axle (1), a sleeve (12) which is rotationally mounted on the axle (1) and a switch gear mounted in the sleeve (12) and fitted with a first and a second planetary gear train (15, 16) to provide several transmission ratios between the drive mechanism (7) and the sleeve (12). Both planetary gear trains (15, 16) have at least two sun gears (19, 20 or 22, 23) which are coaxial to the axle (1) and which can be selectably connected to the axle (1) in order to choose the transmission ratios by means of a shifting device. According to the invention, the shifting device also has means (31, 32) enabling selective connection of the ring gear (24, 25) or the sun wheel (17, 21) of the first and/or second planetary gear train (15, 16) to a sun gear (19, 22) of the same planetary gear train (15, 16).
摘要:
An internal hub transmission for a bicycle comprises a hub axle (21) having an axle axis for retaining the transmission to a bicycle frame; a driver (22) rotatably supported relative to the hub axle (21); and a power transmission mechanism disposed between the driver (22) and the output member (23) for communicating rotational force of the driver (22) to the output member (23) through a plurality of transmission paths. An operation mechanism (25) is disposed at least partly in the hub axle (21) for movement in the direction of the axle axis to select among the plurality of transmission paths, An actuating mechanism (70, 71, 73, 74) is mounted on the hub axle (21) inboard of a free end of the hub axle for moving the operation mechanism (25) in the direction of the axle axis. The inventive internal hub transmission employs a facture that prevents damage to the acutating mechanism and keeps objects from hitting or snagging on the actuating mechanism.