Abstract: An armrest handlebar and a bicycle handlebar assembly having the armrest handlebar are disclosed. The bicycle handlebar assembly includes a steering handlebar, the armrest handlebar, and two armrest pads. The steering handlebar is pivotally engaged with a frame. The armrest handlebar includes two extending tubes which are engaged with the steering handlebar. Each of the extending tubes includes a combining segment, a lifting segment, a leaned segment, and a holding segment which are sequentially disposed. The lifting segment is raised above the combining segment at a first angle, and the leaned segment is raised above the combining segment at a second angle. A curved surface is formed by recessing from a top surface of each of the leaned segments. Each of the two armrest pads is engaged with the steering handlebar and has a concave surface for a rider to lean on.

Abstract: A bicycle hydraulic brake lever includes a body, a brake lever, and a linkage member. The linkage member includes a pressing portion and a first actuating portion extending toward different directions, a piston is disposed in a hydraulic cylinder of the body, the piston includes a second actuating portion, the brake lever and the linkage member are both pivotally connected to the body by a pivot, the second actuating portion of the piston comes into contact with a first actuating portion of the linkage member, and a point of force application by the first actuating portion on the second actuating portion is collinear with a center line of the hydraulic cylinder.

Abstract: A cable routing system of a bicycle, including a stem having a receiving space and an engaging hole communicating with the receiving space, a frame, a fork, an expander, and at least one cable. A head tube of the frame has a top portion having an upper mounting hole and a bottom portion having a lower mounting hole. The fork sequentially passes through the lower mounting hole, the upper mounting hole, and the engaging hole to be connected to the stem. The expander is disposed in a steering tube of the fork and has at least one cable passage communicating with the receiving space and the engaging hole. The cable extends into the steering tube from outside by passing through the receiving space and the cable passage. An end of the cable is connected to a bicycle controller, and another end thereof is connected to a bicycle component.

Abstract: A rear derailleur of a bicycle includes a fixing portion connected to a frame of the bicycle, a linkage assembly pivotally connected between the fixing portion and the moving portion, a moving portion pivotally connected to the linkage assembly, a chain guide assembly connected to the moving portion, and a driving assembly including a clutch assembly, a motor, and a driving gear assembly connected to the clutch assembly. The clutch assembly is disposed between the fixing portion and the linkage assembly and includes a first clutch member and a second clutch member. When a relative rotational torque between the first clutch member and the second clutch member is greater than a predetermined resistance, the first clutch teeth and the second clutch teeth shift relatively. Thereby, the driving gear assembly or the output shaft of the motor could be prevented from damaging.

Abstract: A rear derailleur of a bicycle includes a fixing portion connected to a frame of the bicycle, a linkage assembly pivotally connected to the fixing portion, a moving portion pivotally connected to the linkage assembly, a chain guide assembly connected to the moving portion, a driving assembly, a rechargeable battery for providing an electrical energy required for the motor, a coil, and a wireless charging circuit for receiving an electric power of the coil for charging the rechargeable battery. The driving assembly includes a motor including and a driving gear assembly connected to the linkage assembly. The motor includes an output shaft for driving the driving gear assembly and for driving the linkage assembly to pivot via the driving gear assembly, thereby to drive the moving portion and the chain guide assembly to move. The coil receives an external charging power and is disposed on the fixing portion, the moving portion, or the linkage assembly.

Abstract: A rear derailleur of a bicycle includes a fixing portion having a first pivot portion and a second pivot portion, a linkage assembly including a first connecting shaft and a second connecting shaft, a moving portion, a chain guide assembly connected to the moving portion, and a driving assembly. An end of the first connecting shaft is pivotally connected to the first pivot portion via a first pivot. An end of the second connecting shaft is pivotally connected to the second pivot portion via a second pivot. The moving portion has a third pivot portion pivotally connected to the first connecting shaft via a third pivot and a fourth pivot portion pivotally connected to the second connecting shaft via a fourth pivot. The driving assembly is disposed on either the first connecting shaft or the second connecting shaft and drives one of the first to fourth pivots to drive the linkage assembly to pivot.

Abstract: A rear derailleur of a bicycle includes a fixing portion connected to a frame of the bicycle, a linkage assembly, a moving portion, a chain guide assembly, and a driving assembly. The linkage assembly is pivotally connected to the fixing portion. The moving portion is pivotally connected to the linkage assembly. The chain guide assembly is connected to the moving portion. The driving assembly includes a motor and a driving gear assembly connected to the linkage assembly. The motor includes an output shaft for driving the driving gear assembly. The output shaft of the motor drives the linkage assembly to pivot via the driving gear assembly, thereby to drive the moving portion and the chain guide assembly to move. A pivot shaft and a detachable battery module are disposed on the moving portion. The chain guide assembly is pivotally connected to the pivot shaft. The battery module provides an electric power to the motor.

Abstract: A control device for a bicycle is disposed on a handlebar and includes a body, an electronic module, at least one switch, and at least one input member. The body includes a plugged portion and a holding portion. The plugged portion is disposed inside the handlebar via an opening of the handlebar. The holding portion is connected to the plugged portion and is disposed outside the opening. The electronic module is disposed in the plugged portion and has at least one surface. The switch is disposed on the surface of the electronic module to selectively control the electronic module to send an electronic signal. The input member is disposed on the holding portion and extends into the plugged portion and moves in an operating direction to actuate the switch. The operating direction is not perpendicular to the surface and a longitudinal axis direction of the plugged portion.

Abstract: An integrated handlebar for a bicycle includes a handlebar and at least one integrated control device, wherein the handlebar has at least two free ends and the integrated control device includes a base engaged with at least one of the free ends, a brake lever and an electronic controller. The brake lever has a front end pivotally connected with the base and a rear end. The brake lever has a mounting portion, being located at a distance not greater than ¾ length of the brake lever from the rear end and not on the rear end. The electronic controller includes an operation member disposed on the brake lever, which includes at least one operation part adapted to be triggered by fingers of a rider to control an action of the operation member so as to drive the electronic controller to output an electronic signal to an electronic component.

Abstract: A cable routing system of a bicycle, including a stem having a receiving space and an engaging hole communicating with the receiving space, a frame, a fork, an expander, and at least one cable. A head tube of the frame has a top portion having an upper mounting hole and a bottom portion having a lower mounting hole. The fork sequentially passes through the lower mounting hole, the upper mounting hole, and the engaging hole to be connected to the stem. The expander is disposed in a steering tube of the fork and has at least one cable passage communicating with the receiving space and the engaging hole. The cable extends into the steering tube from outside by passing through the receiving space and the cable passage. An end of the cable is connected to a bicycle controller, and another end thereof is connected to a bicycle component.

Abstract: A control device for a bicycle is disposed on a handlebar and includes a body, an electronic module, at least one switch, and at least one input member. The body includes a plugged portion and a holding portion. The plugged portion is disposed inside the handlebar via an opening of the handlebar. The holding portion is connected to the plugged portion and is disposed outside the opening. The electronic module is disposed in the plugged portion and has at least one surface. The switch is disposed on the surface of the electronic module to selectively control the electronic module to send an electronic signal. The input member is disposed on the holding portion and extends into the plugged portion and moves in an operating direction to actuate the switch. The operating direction is not perpendicular to the surface and a longitudinal axis direction of the plugged portion.

Abstract: An integrated handlebar for a bicycle includes a handlebar and at least one integrated control device, wherein the handlebar has at least two free ends and the integrated control device includes a base engaged with at least one of the free ends, a brake lever and an electronic controller. The brake lever has a front end pivotally connected with the base and a rear end. The brake lever has a mounting portion, being located at a distance not greater than ¾ length of the brake lever from the rear end and not on the rear end. The electronic controller includes an operation member disposed on the brake lever, which includes at least one operation part adapted to be triggered by fingers of a rider to control an action of the operation member so as to drive the electronic controller to output an electronic signal to an electronic component.

Abstract: An integrated handlebar for a bicycle includes a handlebar and at least one integrated control device, wherein the handlebar has at least two free ends and the integrated control device includes a base engaged with at least one of the free ends, a brake lever and an electronic controller. The brake lever has a front end pivotally connected with the base and a rear end. The brake lever has a mounting portion, being located at a distance not greater than ¾ length of the brake lever from the rear end and not directly on the rear end. The electronic controller includes an operation member disposed on the brake lever, which includes at least one operation part adapted to be triggered by fingers of a rider to control an action of the operation member so as to drive the electronic controller to output an electronic signal to an electronic component.

Abstract: A bicycle sprocket comprises a sprocket body, a sprocket ring, a plurality of limiting members, and a plurality of reinforcing members. The sprocket ring has a plurality of ring pieces, each of which includes a plurality of sprocket teeth. Through the movement of the sprocket ring relative to the sprocket body, the axially movable scope of the sprocket ring limited by the limiting members, and the binding strength between the adjacent ring pieces stabilized by the reinforcing members, the sprocket ring can shift relative to the sprocket body in order to reduce the friction and noise generated by the sprocket teeth of the ring pieces and the chain when the bicycle sprocket drives the chain to move.

Abstract: A method of operating an electronic transmission is disclosed, including the following steps. First, turn on the electronic transmission, initialize settings, and perform as an operating mode. Next, detect whether a setup command, a shifting command, or a shutdown command is received. If the setup command is received, perform as the setup mode; if the shifting command is received, perform shifting; if the shutdown command is received, shut down the electronic transmission. If none of the commands is received for a predetermined period, detect whether a standby function is executed. If the function is not executed, shut down the electronic transmission; if the function is executed, perform as a standby mode, and detect whether to receive any command in a less energy consumption manner. If any command is received, return to perform as the operating mode whereby the method protects, including sustaining the power supply.

Abstract: An electronic power control assembly for a bicycle electronic device, a system having the same, and a control method thereof are disclosed. The electronic power control assembly is adapted to be electrically connected to a power source and a control module for controlling at least one electronic device on a bicycle to operate and includes a sensing unit for sensing a motion state of the bicycle, a first timing unit adapted to count a first predetermined time period, and a first control unit. When the sensing unit senses that the bicycle is in a moving state, the first control unit controls the first timing unit to recount and controls the power source to supply electricity to the control module. When the first timing unit finishes counting the first predetermined time period, the first control unit controls the power source to stop supplying electricity to the control module.

Abstract: A cable routing system of a bicycle, including a stem having a receiving space and an engaging hole communicating with the receiving space, a frame, a fork, an expander, and at least one cable. A head tube of the frame has a top portion having an upper mounting hole and a bottom portion having a lower mounting hole. The fork sequentially passes through the lower mounting hole, the upper mounting hole, and the engaging hole to be connected to the stem. The expander is disposed in a steering tube of the fork and has at least one cable passage communicating with the receiving space and the engaging hole. The cable extends into the steering tube from outside by passing through the receiving space and the cable passage. An end of the cable is connected to a bicycle controller, and another end thereof is connected to a bicycle component.

Abstract: A cable routing system of a bicycle, including a frame, a stem, and a fork. The frame includes a head tube and a down tube. The head tube has a top portion having an upper mounting hole and a bottom portion having a lower mounting hole. The down tube is connected to a lower section of the head tube and communicates with the head tube. The fork includes a steering tube sequentially passing through the lower mounting hole and the upper mounting hole to be disposed in the stem, so that the stem is engaged with the steering tube and is located on the top portion. At least one guiding tube is disposed on an inner wall of the head tube. An end of the at least one guiding tube extends toward the upper mounting hole, and another end of the at least one guiding tube extends toward the down tube.

Abstract: A sprocket includes a sprocket body, first and second teeth alternatively arranged radially around an outer periphery of the sprocket body, a driving and a non-driving sides respectively defined on the first and second teeth in the driving direction and the non-driving direction, a recess defined between each first tooth and one adjacent second tooth, the first and second teeth each having a first or second tooth tip, a first groove and a second groove respectively extended from sprocket body to the first tooth tips of each two adjacent first teeth and form a thickness of said first teeth, that said first teeth is axially wider than said second teeth. Each first tooth includes two first front chamfers respectively disposed on the said first tooth flank of said two opposite radial surfaces and located on the intersection of said drive side of said each first tooth and said first and second grooves of said sprocket body.

Abstract: A bicycle controlling device including a lifting controller, a shifting controller, a height adjusting assembly, an electric rear derailleur and a seat height controller is disclosed. The lifting controller and the shifting controller are respectively adapted to generate and emit a lifting control signal or a shifting control signal. The height adjusting assembly is positioned in the seat tube and can be controllably lifted or fixed at a height. The seat height controller is fixed to the seat tube, and includes a wireless signal receiver, a control circuit and a motor. The wireless signal receiver is adapted to receive/transmit the lifting/shifting control signal to the control circuit, which is electrically connected with the electric rear derailleur and the motor, and controls the motor/the electric rear derailleur with the received lifting/shifting control signal. The motor can mechanically control the lifting of the height adjusting assembly or fix its height.