Abstract: A bicycle braking device includes a caliper, two operation units and two links. Each operation unit is installed to the two respectively threaded holes of the caliper and includes an operation assembly and a ring. Two links are respectively connected to the two operation assemblies. Each operation assembly includes multiple curve slots, and multiple balls are partially rotatably accommodated in each curve slot. Each ring is movably mounted to the core part of each operation assembly and includes multiple spiral grooves. The balls are accommodated in the spiral grooves and the curve slots. When the two links are pivoted by pulling the brake cable, the two core parts are rotated, and the two rings rotatably move to push the linings to clamp the brake disk. The balls ensure the rings to move smoothly so as to precisely clamp the brake disk.

Abstract: A tire valve assembly includes a stem and a valve unit. The valve unit includes a movable part and a seal member. When introducing pressurized air into the tire valve assembly, the valve unit moves to a position in the stem to allow the pressurized air to flow into the tire. When the pressurized air is stopped from entering the tire valve assembly, the valve unit is pushed back by the pressure in the tire to seal the inlet so that the pressurized air in the tire does not leak to keep the tire pressure.

Abstract: A tire valve assembly includes a valve shaft movably inserted into a first diameter section of the outer tube. The valve shaft includes a passage and a radial hole which communicates with the passage. A first seal is mounted to the end of the valve shaft that is inserted into the outer tube and is movable relative to a shoulder in the outer tube. A guide tube is mounted to the valve shaft and has a guide portion protruding therefrom which is guided in guide groove in the outer tube. An adjustment tube is threadedly mounted to the first outer threads on the valve shaft. When rotating the adjustment tube, the valve shaft is axially movable in the outer tube to control the gap between the first seal and the shoulder in the outer tube. The gap is changeable and communicates with the radial hole and the passage.

Abstract: A tire valve assembly includes a valve shaft movably inserted into a first diameter section of the outer tube. The valve shaft includes a passage and a radial hole which communicates with the passage. A first seal is mounted to the end of the valve shaft that is inserted into the outer tube and is movable relative to a shoulder in the outer tube. A guide tube is mounted to the valve shaft and has a guide portion protruding therefrom which is guided in guide groove in the outer tube. An adjustment tube is threadedly mounted to the first outer threads on the valve shaft. When rotating the adjustment tube, the valve shaft is axially movable in the outer tube to control the gap between the first seal and the shoulder in the outer tube. The gap is changeable and communicates with the radial hole and the passage.

Abstract: A heat dissipating device for bicycle braking systems includes a first board and a second board which is connected to the first board to form a room defined therebetween so that cooling liquid flows within the room. The first board includes a first recess and a second recess defined in an inside thereof which faces the second board. The first recess communicates with the second recess. A flanged portion is formed along four sides of the first board. The second board has a grooved portion formed on each of four sides thereof. The flanged portion is engaged with the grooved portions to connect the first and second boards together.

Abstract: A heat dissipating device for bicycle braking systems includes a first board and a second board which is connected to the first board to form a room defined therebetween so that cooling liquid flows within the room. The first board includes a first recess and a second recess defined in an inside thereof which faces the second board. The first recess communicates with the second recess. A flanged portion is formed along four sides of the first board. The second board has a grooved portion formed on each of four sides thereof. The flanged portion is engaged with the grooved portions to connect the first and second boards together.

Abstract: A brake pad assembly for mounting on a caliper of a vehicle includes a backing plate, a brake lining disposed on a front side of the backing plate, and a heat sink. The heat sink includes a thermal conductive sheet and a set of cooling fins mounted on a rear side of the thermal conductive sheet. In particular, the thermal conductive sheet is overlapped and releasably fastened on the backing plate.

Abstract: A bicycle cable fastener, which is configured to adjust a cable, includes an outer shell, a pressing assembly and a plurality of balls. The outer shell has an assembling hole defined therethrough and an oblique guide face annularly defined at the assembling hole. The pressing assembly has a base member and a cylinder. The base member is assembled with one end of the cylinder. The other end of the cylinder passes into the outer shell and is axially movable relative to outer shell. The cylinder has a through hole defined therein. Specifically, a plurality of cavities is defined around an outer periphery of the cylinder opposite to the base member. The balls are respectively disposed in the cavities of the cylinder and biased inwardly by the oblique guide face of the outer shell so as to tighten the cable.

Abstract: A hydraulic brake system is adapted to be assembled on a steering assembly. The hydraulic brake system includes a connecting member and hydraulic device. The connecting member has a receiving room and a receiving opening. The hydraulic device has a hydraulic cylinder and a fluid tank. The hydraulic cylinder is received in the receiving room. The fluid tank is inserted in the receiving opening and connected with the hydraulic cylinder. The hydraulic cylinder has a main body, two pistons and two springs. The main body has two hydraulic chambers. The two pistons are assembled in the two hydraulic chambers and two springs sleeve onto the two pistons. Two brake cables and two fluid pipes are connected with the hydraulic cylinder. When the brake cable pulls the piston to press a fluid in the hydraulic chamber, the fluid flows into the fluid pipe so as to control a brake device.

Abstract: A brake pad assembly includes a backing plate, a brake lining and a brake wear indicator. The brake lining is disposed on a front side of the backing plate for engagement with a rotor to be braked. The brake wear indicator is formed of an elastic metallic strip with one end attached to the front side of the backing plate. Moreover, the brake wear indicator is disposed adjacent to the brake lining for engagement with the rotor to be braked once the brake lining is worn out to a predetermined safe thickness, and thereby causing an annoying noise to alert an motorist that the brake pad assembly needs to be replaced.

Abstract: A brake pad assembly for mounting on a caliper of a vehicle includes a backing plate, a brake lining disposed on a front side of the backing plate, and a heat sink. The heat sink includes a thermal conductive sheet and a set of cooling fins mounted on a rear side of the thermal conductive sheet. In particular, the thermal conductive sheet is overlapped and releasably fastened on the backing plate.

Abstract: An adjustment device for a hydraulic brake system includes a hollow casing and a retractable unit. The hollow casing has a rotatable ring to control the retractable unit. One end of the hollow casing is connected to a hydraulic hose, and another end is connected to a hydraulic cylinder. The adjustment device is assembled between a hydraulic hose and a hydraulic cylinder. When a user rotates the rotatable ring, the retractable unit is adjusted so as to control a sensitivity of a hydraulic brake system.

Abstract: A brake block for bicycle includes a base which is made by plastic injection molding and a pad body made of rubber. The base has a fixing portion formed on one side thereof and a connecting portion formed on another side thereof. The connecting portion is connected with the fixing portion. The connecting portion has a plurality of necks connecting with the fixing portion and a connecting plate which is mounted on the necks. A gap is defined in two adjacent necks. The pad body has a braking portion formed on another side thereof for providing frictional effect. The pad body is partially filled into the gaps of the connecting portion of the base. The necks and the connecting plate are thoroughly covered by the pad body so that the base and the pad body form as an integral part.

Abstract: An adjustable holder of a hydraulic brake device for a bicycle which is assembled on a steering tube and is located between a stem and a head part includes a holder, a first adjusting member and a second adjusting member. The holder has a fixing portion and a fastening portion defined at two ends thereof respectively. A hydraulic brake device is assembled to a bottom of the holder. The fastening portion has a fastening hole opened therethrough. The fastening hole sleeves onto the steering tube. One end of the first adjusting member and one end the second adjusting member are abutted against two ends of the fastening hole respectively. Therefore, an angle between the holder and the steering tube is adjustable, which corresponds to an elevation angle of the stein.

Abstract: A hydraulic brake device includes a main body, a brake lever, a hydraulic rod, a connecting rod, a sleeve member and an elastic member. The elastic member has an assembling portion, a driving portion and a deformation portion. When a user actuates the brake lever suddenly and forcefully, the driving portion of the elastic member moves toward the hydraulic room; a pressure of hydraulic oil pushes the driving portion so as to indirectly force the deformation portion to deform and bend, so that the deformation portion and the driving portion slightly move toward the assembling portion; thereby, a volume of hydraulic oil is smoothly pushed into a brake caliper through a hydraulic pipeline, such that the user brakes a bicycle stably, smoothly and safely.

Abstract: A cooling device for a braking system, includes a blower having a case and a fan, the case having an air outlet opened at one end thereof and an air inlet opened at another end thereof, the case having a receiving room, the receiving room communicating with the air outlet and the air inlet, the fan rotatably assembled in the receiving room, the blower further having a power supplier electrically connected to the fan, the power supplier being used to power the fan, one end of a frame connected to a hydraulic braking system, another end of the frame connected to the case. Under this arrangement, the blower directly blows the hydraulic braking system so as to efficiently cool the hydraulic braking system.

Abstract: A cooling device for a rim and a braking system includes a blower set having a frame and two blowers, the frame assembled onto a fork of a bicycle, the two blowers both assembled onto the frame at one side of a rim member, each blower having an air inlet, a receiving room, a fan, an air outlet and a switch unit, the fan rotatably assembled in the receiving room, the receiving room communicating with the air inlet and the air outlet, the switch unit electrically connected to the fan, the air outlet of one blower corresponding to a braking member of the bicycle, the air outlet of another blower corresponding to the rim member.

Abstract: A bicycle hydraulic brake clamp includes a clamp, two piston assemblies and a separation board. The clamp has a first slot defined on the middle thereof so that a brake disk is received therein. A second slot and a third slot are respectively defined in two sides of the clamp. A through hole is defined through the clamp and communicates with the third slot. The separation board is fixedly engaged with the through hole via the first slot by a way of welding. The two piston assemblies are respectively installed in the second and third slots via the first slot. The separation board is securely engaged with the through hole so as not only to prevent the separation board from dropping from the clamp by exterior impact, but also to protect the separation board from being damaged by the exterior impact.

Abstract: A hydraulic brake device for a bicycle includes a holder, a chamber member and two side oil tubes, the holder assembled with the bicycle, the chamber member assembled to the holder and having two oil tanks, each oil tank having an operating bar movably received therein, the brake cable connected with the operating bar, each oil tank having a brake oil drain and a side oil hole, a distance being defined between each brake oil drain and each corresponding side oil hole, each brake oil drain and each side oil hole communicating with the chamber member, each brake oil drain assembled to a brake hose and communicating with a brake system of the bicycle, the chamber member having two assembling grooves, two ends of each side oil tube assembled to each corresponding side oil hole and each corresponding assembling groove respectively.