Abstract: A bicycle rotation detecting device is provided with a first electrical connector, a second electrical connector, a rotation detecting circuit and an output part. The second electrical connector is electrically connected to the first electrical connector by an electrical path. The rotation detecting circuit detects a waveform of alternating current in the electrical path and produces a rotation detection signal. The output part is electrically connected to the rotation detecting circuit. The output part outputs either the rotation detection signal of the rotation detecting circuit or a signal based on the rotation detection signal of the rotation detecting circuit.

Abstract: A crank detachable holder is provided with a crank arm attachment part and a holding part. The crank arm attachment part has a mounting opening dimensioned to receive a bolt for connecting the crank arm to a crank axle. The holding part connected to the crank arm attachment part. The crank detachable holder is preferably part of a bicycle crank arm assembly.

Abstract: A crank detachable holder is provided with a crank arm attachment part and a holding part. The crank arm attachment part has a mounting opening dimensioned to receive a bolt for connecting the crank arm to a crank axle. The holding part connected to the crank arm attachment part. The crank detachable holder is preferably part of a bicycle crank arm assembly.

Abstract: A bicycle accessory mounting structure is provided with a base member and a first stem member. The first stem member includes a mounting opening. The base member includes an accessory attachment portion and a mounting portion. The base member extends through the mounting opening. The base member is slidably supported on the first stem member within the mounting opening.

Abstract: A bicycle rotation detecting device is provided with a first electrical connector, a second electrical connector, a rotation detecting circuit and an output part. The second electrical connector is electrically connected to the first electrical connector by an electrical path. The rotation detecting circuit detects a waveform of alternating current in the electrical path and produces a rotation detection signal. The output part is electrically connected to the rotation detecting circuit. The output part outputs either the rotation detection signal of the rotation detecting circuit or a signal based on the rotation detection signal of the rotation detecting circuit.

Abstract: A bicycle accessory mounting structure is provided with a base member and a first stem member. The first stem member includes a mounting opening. The base member includes an accessory attachment portion and a mounting portion. The base member extends through the mounting opening. The base member is slidably supported on the first stem member within the mounting opening.

Abstract: A bicycle shifting control apparatus controls an electrical power supplied from a power supply to first and second gear shifting devices that are operated by first and second gear shift operating devices, respectively. The bicycle shifting control apparatus includes a first power supply sensor and a controller. The first power supply sensor detects a power level of the power supply. The controller receives a power level signal from the first power supply sensor. The controller performs a stopping operation of the first gear shifting device in response to the first power supply sensor detecting the power level of the power supply being below a first prescribed power level, but the controller transmits a second gear shift signal from the second gear shift operating device to the second gear shifting device to perform a second shifting operation of the second gear shifting device.

Abstract: A bicycle wire holding arrangement is provided with a hollow frame member, a wire extending axially inside the hollow frame member and a suspending member disposed inside the hollow frame member. The suspending member is coupled to the wire and contacts an interior surface of the hollow frame member to hold the wire.

Abstract: A bicycle shifting control apparatus controls an electrical power supplied from a power supply to first and second gear shifting devices that are operated by first and second gear shift operating devices, respectively. The bicycle shifting control apparatus includes a first power supply sensor and a controller. The first power supply sensor detects a power level of the power supply. The controller receives a power level signal from the first power supply sensor. The controller performs a stopping operation of the first gear shifting device in response to the first power supply sensor detecting the power level of the power supply being below a first prescribed power level, but the controller transmits a second gear shift signal from the second gear shift operating device to the second gear shifting device to perform a second shifting operation of the second gear shifting device.

Abstract: A bicycle wire holding arrangement is provided with a hollow frame member, a wire extending axially inside the hollow frame member and a suspending member disposed inside the hollow frame member. The suspending member is coupled to the wire and contacts an interior surface of the hollow frame member to hold the wire.

Abstract: A generator for a human powered vehicle comprises a hub shaft structured to be mounted to the human powered vehicle, a hub shell mounted to rotate relative to the hub shaft, a power generating mechanism including a coil and a magnet that rotate relative to each other, and a rotating member structured to rotate relative to the hub shaft, wherein at least one of the coil or the magnet rotate together with the rotating member. A transmission communicates rotation from an input member to an output member corresponding to a plurality of gear ratios, and a switching unit couples the rotating member to the transmission so that the rotating member rotates at a plurality of speeds relative to the hub shell.

Abstract: There is provided a wiring connection structure for electrically connecting two electrical components that is easily made waterproof and can prevent poor insulation or falling off of a wiring. The wiring connection structure 60 for a bicycle is a structure for electrically connecting a first electrical wiring 50 connected to a switch unit 23a mounted to a handlebar 15 and a second electrical wiring 51 connected to a second control unit 31, and includes a first connection terminal 61, a second connection terminal 62, and a tubular cover member 63. The first connection terminal 61 is a terminal electrically connectable to the first electrical wiring 50. The second connection terminal 62 is a terminal electrically connectable to the second electrical wiring 51 and the first connection terminal 61. The cover member 63 is a heat-shrinkable synthetic resin member covering at least both the connection terminals 61 and 62.

Abstract: An apparatus for achieving the return of a chain to a rear derailleur tension pulley more easily by means of pedaling action when the chain falls off from the tension pulley is provided. The rear derailleur is equipped with a base component, a link mechanism, a movable component, Outer Plate 20, Inner Plate 21, Guide Pulley 22, Tension Pulley 23, and Chain Return Section 32. The base component is a component which is mounted on the frame. The link mechanism is a mechanism of which one end is mounted on the base component. The movable component is a component which is mounted on the other end of the link mechanism, and which can be relatively displaced from the base component. The outer plate is a component which is mounted on the movable component so as to undulate like a see-saw. The inner plate is a component which is installed so as to face the outer plate.

Abstract: A generator for a human powered vehicle comprises a hub shaft structured to be mounted to the human powered vehicle, a hub shell mounted to rotate relative to the hub shaft, a power generating mechanism including a coil and a magnet that rotate relative to each other, and a rotating member structured to rotate relative to the hub shaft, wherein at least one of the coil or the magnet rotate together with the rotating member. A transmission communicates rotation from an input member to an output member corresponding to a plurality of gear ratios, and a switching unit couples the rotating member to the transmission so that the rotating member rotates at a plurality of speeds relative to the hub shell.

Abstract: There is provided a wiring connection structure for electrically connecting two electrical components that is easily made waterproof and can prevent poor insulation or falling off of a wiring. The wiring connection structure 60 for a bicycle is a structure for electrically connecting a first electrical wiring 50 connected to a switch unit 23a mounted to a handlebar 15 and a second electrical wiring 51 connected to a second control unit 31, and includes a first connection terminal 61, a second connection terminal 62, and a tubular cover member 63. The first connection terminal 61 is a terminal electrically connectable to the first electrical wiring 50. The second connection terminal 62 is a terminal electrically connectable to the second electrical wiring 51 and the first connection terminal 61. The cover member 63 is a heat-shrinkable synthetic resin member covering at least both the connection terminals 61 and 62.

Abstract: An apparatus for achieving the return of a chain to a rear derailleur tension pulley more easily by means of pedaling action when the chain falls off from the tension pulley is provided. The rear derailleur is equipped with a base component, a link mechanism, a movable component, Outer Plate 20, Inner Plate 21, Guide Pulley 22, Tension Pulley 23, and Chain Return Section 32. The base component is a component which is mounted on the frame. The link mechanism is a mechanism of which one end is mounted on the base component. The movable component is a component which is mounted on the other end of the link mechanism, and which can be relatively displaced from the base component. The outer plate is a component which is mounted on the movable component so as to undulate like a see-saw. The inner plate is a component which is installed so as to face the outer plate.