Abstract: A control device with adjustable communication period is configured for an electromechanical gear shifter of a bicycle. The control device comprises a master controller and a trigger sensor. The master controller sends a broadcast signal with a first period when the master controller is in a working mode. The master controller sends the broadcast signal with a period selected from an idle period set when the master controller is in an idle mode. The trigger sensor is in communicable connection with a master controller, and the trigger sensor detects a trigger state to send a trigger signal. The master controller switches to the working mode when the master controller receives the trigger signal. The master controller switches to the idle mode selectively when the master controller does not receive the trigger signal.

Abstract: A bicycle stem includes a handlebar and a dual control lever which includes a brake device and a first electronic sending unit. The first electronic sending unit is detachably fixed to the brake device. The brake device and the first electronic sending unit together form an assembly space for a handlebar installed therein. The handlebar is assembled with the brake device and the first electronic sending unit in the assembly space.

Abstract: A bicycle derailleur includes movable member, chain guide member and resistance applying member. The movable member is connected to linkage assembly. The chain guide member is pivoted to the movable member. The resistance applying member is connected between the movable member and the chain guide member. The resistance applying member includes pivot base, first engagement member and second engagement member. The pivot base includes pivot part and pressing part. The pressing part extends radially outwardly from the pivot part. The first engagement member is pivoted to the pivot part and pressed by the pressing part. The second engagement member is engageable with the first engagement member so that the first engagement member is only rotatable with respect to the second engagement member in a rotatable direction.

Abstract: A dual control lever includes a fixed base, a brake lever, a pivot lever, a first electrical button, a second electrical button and a third electrical button. The brake lever is pivoted on the fixed base. The pivot lever is rotatably close to the brake lever. The first electrical button is disposed on the pivot lever. The second electrical button disposed on the pivot lever. The third electrical button is disposed on the pivot lever.

Abstract: A clutch assembly includes an axle, a gear seat, at least one one-way bearing, an outer limiting sleeve and a hub. The gear seat is rotatably positioned around the axle. The at least one one-way bearing includes an outer race and an inner race. The inner race is securely fitted around the gear seat. The outer race is rotatably positioned around the inner race. The outer race is rotatable relative to the inner race in only one direction. The outer limiting sleeve is securely fitted around the outer race. The hub is securely fitted around the outer limiting sleeve.

Abstract: A derailleur includes a fixed component, a movable component, a linkage component, a deceleration component and a drive component. The fixed component is for being fixed to a bicycle frame. The movable component is for being fixed to a chain guide. The linkage component includes a first linkage and a second linkage. Two ends of the first linkage pivot on the fixed component and the movable component, respectively. Two ends of the second linkage pivot on the fixed component and the movable component, respectively. The deceleration component includes a circular spline, a flex spline and a wave generator. The flex spline is disposed inside the circular spline, for rotating the first linkage and the second linkage relative to the fixed component. The wave generator is disposed inside the flex spline. The drive component is connected to the wave generator, for rotating the wave generator.

Abstract: A bicycle front fork assembly includes a stem and a front fork. The front fork includes a fork crown, a first fork leg and a second fork leg. The stem is connected to the fork crown. The top end of the first fork leg and the second fork leg are connected to the two ends of the fork crown, respectively. The bottom end of the first fork leg and the second fork leg are connected to two ends of a hub which are opposite to each other, respectively. A disk brake rotor has a center coaxially connected to one end of the hub close to the first fork leg. A disc brake caliper is partially disposed within an accommodating recess formed on a surface of the first fork leg facing the second fork leg and close to the disk brake rotor.

Abstract: A bicycle derailleur includes movable member, chain guide member and resistance applying member. The movable member is connected to linkage assembly. The chain guide member is pivoted to the movable member. The resistance applying member is connected between the movable member and the chain guide member. The resistance applying member includes pivot base, first engagement member and second engagement member. The pivot base includes pivot part and pressing part. The pressing part extends radially outwardly from the pivot part. The first engagement member is pivoted to the pivot part and pressed by the pressing part. The second engagement member is engageable with the first engagement member so that the first engagement member is only rotatable with respect to the second engagement member in a rotatable direction.

Abstract: A hydraulic brake master cylinder is provided. The end of the movable barrel away from the outer convex ring is spaced apart or against the first inner convex flange and to adjust the location of one of two flow-through holes to make the use of brake not be influenced by the oil and air inside the first cylinder while rotating the movable barrel through the disposed outer convex ring. Two elastic plates are plugged in the inner conical portion, the outer convex ring between two ends of the inner connecting member is against the third inner convex flange adjacent to the fifth inner threaded portion, and two elastic plates are pressed by the inner conical portion to be fastened and passed through the second end cap, the second piston, the first piston, and the end of the two elastic plates with a brake cable in series.

Abstract: A hydraulic brake adjusting device is provided. The mechanical advantage may be automatically increased by pressed the handlebar by riders and then increased the angle lead by the leading plate(s). Thereby, it may simplify structure, be easy to operate, and be capable of automatically adjusting mechanical advantage while riding. Furthermore, the distance between the O-ring on the tube and the through hole of the piston may be adjusted by the screw barrel to make the convex portion push against the tube, the piston, and the push rod.

Abstract: A quick-release device for a bicycle brake including a first brake arm, a second brake arm, and a brake cable terminated at the second brake arm, the quick-release device is provided with a lever including a long part and a short part pivotably secured to a top of the second brake arm; and an attachment assembly for securing the brake cable to a joining portion of the long part and the short part. A rotation of the lever in a first direction loosens the brake cable and increases a distance between the first brake arm and the second brake arm. A rotation of the lever in a second direction contrary to the first direction tightens the brake cable and decreases the distance between the first brake arm and the second brake arm.

Abstract: A cutting device includes a first part and a second part which is pivotably connected to the first part. A first fixing portion is located in the top side of the first part. The second part has a second fixing portion defined in the underside side thereof and facing the top side of the first part. The second fixing portion is located corresponding to the first fixing portion. A reception slot is defined axially in the second part and communicates with the second fixing portion and the underside of the second part. A blade is inserted into the reception slot. A hole is defined through the first part for receiving a hydraulic hose. A pressing member is pivotably located in a recess in one side of the first part and is able to press the hydraulic hose passing through the hole and the recess.

Abstract: A brake adapter for a bicycle brake is provided with a bent, rigid tube including a plurality of transverse holes communicating with interior of the bent, rigid tube; and a plurality of rollers rotatably disposed in the transverse holes respectively. Both ends of each transverse hole are smaller than both ends of each roller respectively.

Abstract: The present invention provides a bicycle disc brake apparatus comprising a U-shape elastic plate having two ends connected to two ring portions; the ring portions comprising through holes; the U-shape elastic plate comprising two brake pads abutting the ring portions; two compression discs outside the U-shape elastic plate and adjacent to the ring portions, comprising protrusions penetrating the through holes to act on the brake pads, compression disc rotating slots away from the protrusions and first guiding tread surface in a first direction; two roller seats adjacent to the compression discs and comprising roller rotating slots adjacent to the compression disc rotating slots; rollers provided between the rotating slots; the roller rotating slots having second guiding tread surface in a second direction opposite to the first direction with protruding columns; two bearings mounted on the protruding columns; and two sealing gaskets sealed onto the bearings away from the roller seats.

Abstract: A quick-mounting pipe structure comprises a first tubular fitting, a coupling sleeve, and a hose assembly. The first tubular fitting includes a locking ball. The coupling sleeve is formed with an inner annular protrusion and internal threads at an inner surface thereof. The hose assembly includes a hose and a second tubular fitting. The second tubular fitting is formed with an annular raised portion, an annular recessed portion, and external threads on its outer surface. The second tubular fitting can be inserted into the first tubular fitting to allow the locking ball to be retained in the annular recessed portion of the second tubular fitting. Additionally, the coupling sleeve can be threadedly engaged with the second tubular fitting, thereby providing additional attachment between the first tubular fitting and the second tubular fitting to prevent the second tubular fitting from being pulled out of the first tubular fitting under excessive force.

Abstract: The present invention relates to a control-by-wire hydraulic brake structure of bicycle, which includes a caliper portion that is coupled to two brake shoes that are opposite to and spaced from each other; and a transmission portion, which has an end connected to the caliper portion to control the operation of the two brake shoes of the caliper portion and includes a fluid reservoir, a piston, and a transmission arm. The piston is movably received in the fluid reservoir. The transmission arm has an end pivotally connected to an end of the fluid reservoir that is distant from the caliper portion. The piston has an end that is connected to a predetermined location between two ends of the transmission arm. The transmission arm has an end that is distant from the pivotal connection with the fluid reservoir and is operatively coupled to a brake wire.

Abstract: A cantilever brake of bicycle is provided with a triangular cable stop including first, second and third corner attachments and a wheel between the first and second corner attachments; a first pivot member including a first trough; a first cable passing through the first corner attachment, the wheel, and the second corner attachment to be fastened at the first pivot; a second pivot member including a second trough; a second cable having one end fastened in the third corner attachment and the other end fastened in the second pivot member; a first brake arm releasably pivotably secured to the first trough and including two opposite first projections and a spring actuated first adjustment knob distal the first projections; and a second brake arm releasably pivotably secured to the second trough and including two opposite second projections and a spring actuated second adjustment knob distal the second projections.

Abstract: A wireless-control lighting device includes a control switch module mounted on a braking handle set, and a lighting displaying unit mounted on a bicycle and having a wireless receiver, a plurality of indicators and a second power supply. The control switch module includes a switch element, a circuit board, a wireless superconductor IC and a first power supply. The switch element and the wireless superconductor IC are electrically connected to the circuit board. The first power supply provides power to the circuit board and the wireless super conductor. When the switch element is working, and the wireless superconductor IC emits an actuating signal. The wireless receiver, the indicators and the second power supply are electrically connected to one another. The second power supply provides power to the wireless receiver and the indicators. The wireless receiver receives the actuating signal which accordingly actuates the operation of the indicators.

Abstract: A bicycle brake unit includes a first arm, a second arm and a connector, when the brake cable is pulled, the first and second cable connectors on the two arms are moved toward each other to pivot the first and second arms. The first rail on the first arm and the second rail on the second arm are moved relative to each other via the rotation of the pivot. The pivot is movable in the elongate slot in the connector which is pivotably connected to the first and second arms. The first and second arms are pivoted toward each other to brake the wheel by the brake pads on the two arms. The first and second arms apply even forces to the two brake pads.

Abstract: A brake operating device of an electric bicycle is provided with a brake lever including a projecting plate at one end, and a bifurcated cable anchoring member pivotably secured to the projecting plate; a magnetic member adhered to one side of the cable anchoring member; a housing pivotably secured to the brake lever and including a hydraulic cylinder and a cylindrical socket including an opening distal the brake lever, and internal threads proximate the opening; a spring depressible sensor including a sensing member disposed in the socket, and an electric wire extending from the sensing member; a hollow threaded fastener adjustably threadedly secured to the internal threads of the socket to engage the sensing member; and a cylindrical member releasably mounted proximate to the opening and secured to the fastener. The electric wire passes the fastener and leaves the housing.