Abstract: A cooling device for bicycles includes a cooling device and a ring, wherein the cooling device has a positioning hole and multiple recesses are located around the positioning hole. The ring is connected to the hub and multiple protrusions are located on the periphery of the ring. The recesses are located corresponding to the protrusions which are engaged with the recesses to secure the cooling device to the ring.

Abstract: A cooling device for a brake clamp includes a cooling device mounted on the hub of the bicycle wheel, a receiving room formed in the cooling device, an air vent defined on the peripheral of the cooling device and communicating with the receiving room, a receiving space formed on the peripheral of the cooling device and located adjacent to the air vent. Therefore, a brake clamp is partially received in the receiving space and the airflow from the air vent blows toward the brake clamp directly and continuously so as to cool the brake clamp.

Abstract: A sealing device for hydraulic brake lever assembly includes a seat having an oil tank defined therein for receiving oil. The oil tank has a connecting hole defined therein. The oil tank is conically tapered toward the bottom thereof. An elastomer is sealingly received in the oil tank. The elastomer has an U-shaped portion formed therein for providing a resilient force. The elastomer has a movable portion formed therein. A piston assembly is received in the oil tank and connected to the elastomer for actuating the elastomer. At least one oil seal is sleeved on the driving shank for preventing oil leakage. When braking, the piston assembly actuates the U-shaped portion to deform. The movable portion is pushed to pressing oil into the connecting hole. When an oil pressure is decreased, the U-shaped portion restores. The movable portion is pulled backward by the resilient force.

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 oil guiding device for hydraulic brake lever assembly having a brake lever includes a seat connected to the brake lever. The seat has an oil reservoir disposed thereon. The oil reservoir has an oil chamber defined therein. An oil guiding base is disposed in the oil chamber. The oil guiding base has an oil inlet and an oil outlet defined therein. An oil guiding unit engages with the oil guiding base. The oil guiding unit has a pipe disposed thereon and an oil hole defined therein. The pipe and the oil hole are communicated with the oil outlet and the oil inlet respectively. A cover panel engages with the oil reservoir. The pipe sucks up the hydraulic oil gathered in the oil chamber and supplies the hydraulic oil through the oil outlet; the returned hydraulic oil flows into the oil chamber through the oil inlet.

Abstract: A tube structure for bicycle cable includes a rigid metallic member spirally wound into a tubular body. The tubular body has a channel centrally defined therein and axially extending therethrough for adapting to be passed through by a bicycle brake cable. A flexible metallic member is connected with the rigid metallic member and is spirally disposed along a length of the rigid metallic member. When the tubular body is impacted with an external force, the rigid metallic member provides an enhanced rigidity to the tubular body for preventing a deformation of the tubular body. The flexible metallic member and the rigid metallic member are alternately arranged so as to allow the tubular body to be bendable and have a sufficient ductility.

Abstract: A holder for hydraulic brake assembly includes a holder. The holder has one end thrust by a pushing mechanism and another end connected to a brake shoe. The holder has a skirt formed on one end thereof and outwardly extending therefrom to define a receiving space in between the skirt. The pushing mechanism is selectively received in the receiving space in the skirt. The skirt is provided for stably connecting to the pushing mechanism such that the pushing mechanism is steady thrust with the holder to provide a stable brake effect and prevent wear from an unstable contact.

Abstract: A wheel rim with a brake rotor includes a wheel rim having two retaining walls respectively and annularly formed on two lateral sides thereof. An annular groove is annularly defined between the two retaining walls for adapting to retain a tire. The wheel rim has a plurality of support plates spacedly formed on one retaining wall and extending toward a center of the wheel rim to form a hub hole defined therein. The hub hole is axially located at the center of the wheel rim for adapting to assemble with a wheel hub. A brake rotor is concentrically connected with the wheel rim and mounted with the other retaining wall of the wheel rim for adapting to be clamped by a disc brake.

Abstract: An uncomplicated bicycle device for fastening a steering tube with a stem tube includes two compression rings and a fastening set. The compression ring is fixed on a stem opening by inserting the lateral surface portion into the stem tube and the protruding portion abutted against the stem opening. The steering tube is inserted into the compression rings. A fastening set includes a star nut placed into the steering tube, a cap covering the stem opening and abutted against the compression ring, a cap bolt for screwing the cap and the star nut together. The present invention only uses the compression rings and the fastening set instead of any thread structure and lock nuts for fastening the steering tube within the stem tube. Thus, the adjuster can quickly calibrate and assemble the steering tube within the stem tube again.

Abstract: A wear-resistant brake disc includes a carrier-plate provided for adapting to assemble with a wheel hub and two outer rings respectively mounted on the two sides of the carrier-plate for providing a wear-resisting effect. The carrier-plate is composed of light metal. Each outer ring is composed of steel.

Abstract: An oil guiding device for hydraulic brake lever assembly having a brake lever includes a seat connected to the brake lever. The seat has an oil reservoir disposed thereon. The oil reservoir has an oil chamber defined therein. An oil guiding base is disposed in the oil chamber. The oil guiding base has an oil inlet and an oil outlet defined therein. An oil guiding unit engages with the oil guiding base. The oil guiding unit has a pipe disposed thereon and an oil hole defined therein. The pipe and the oil hole are communicated with the oil outlet and the oil inlet respectively. A cover panel engages with the oil reservoir. The pipe sucks up the hydraulic oil gathered in the oil chamber and supplies the hydraulic oil through the oil outlet; the returned hydraulic oil flows into the oil chamber through the oil inlet.

Abstract: A sealing device for hydraulic brake lever assembly includes a seat having an oil tank defined therein for receiving oil. The oil tank has a connecting hole defined therein. An elastomer is sealingly received in the oil tank. The elastomer has an U-shaped portion formed therein for providing a resilient force. The elastomer has a movable portion formed therein. A piston assembly is received in the oil tank and connected to the elastomer for actuating the elastomer. At least one oil seal is sleeved on the driving shank for preventing oil leakage. When braking, the piston assembly actuates the U-shaped portion to deform. The movable portion is pushed to pressing oil into the connecting hole. When an oil pressure is decreased, the U-shaped portion restores. The movable portion is pulled backward by the resilient force.

Abstract: An abrasion-resistant disc brake rotor includes a pair of friction rings made of metal. Each friction ring has a plurality of ventilating holes annularly defined therein. At least one of the ventilating holes has a pair of buckles correspondingly extending from an inner periphery thereof. A rotor body is disposed between the pair of friction rings and is adapted to be mounted on a bicycle hub. The rotor body is made of light metal. The rotor body has a plurality of through holes annularly defined in an outer peripheral edge thereof and correspondingly aligned with the ventilating holes. The pair of buckles extending from at least one of the ventilating holes respectively engage with an inner periphery of the corresponding through hole such that the pair of friction rings integrally engage with the rotor body.

Abstract: A brake system for a bicycle includes a brake disk having an anti-wearing portion formed thereon and two brake members each have an anti-wearing portion formed thereon which is in contact with the anti-wearing portion of the brake disk when braking the bicycle. The two respective anti-wearing portions are made by plastic or rubber which is heated and pressed to be attached to at least one of two sides of the brake disk 1 and the two brake members such that the brake disk quickly responds to the braking action and has longer life of use.

Abstract: A tube structure for bicycle cable includes a rigid metallic member spirally wound into a tubular body. The tubular body has a channel centrally defined therein and axially extending therethrough for adapting to be passed through by a bicycle cable. A flexible metallic member is connected with the rigid metallic member and is spirally disposed along a length of the rigid metallic member. When the tubular body is impacted with an external force, the rigid metallic member provides an enhanced rigidity to the tubular body for preventing a deformation of the tubular body. The flexible metallic member and the rigid metallic member are alternately arranged so as to allow the tubular body to be bendable and have a sufficient ductility.

Abstract: A holder for hydraulic brake assembly includes a holder. The holder has one end thrust by a pushing mechanism and another end connected to a brake shoe. The holder has a skirt formed on one end thereof and outwardly extending therefrom to define a receiving space in between the skirt. The pushing mechanism is selectively received in the receiving space in the skirt. The skirt is provided for stably connecting to the pushing mechanism such that the pushing mechanism is steady thrust with the holder to provide a stable brake effect and prevent wear from an unstable contact.

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 an opposite side thereof. The connecting portion is connected with the fixing portion. The pad body has one side integrally covers the connecting portion, such that the base and the pad body formed an integral part. The pad body has a braking portion formed on an opposite side thereof for providing frictional effect.

Abstract: A hydraulic brake system includes a bicycle steering assembly having a head tube, a connecting member connected with the head tube and a handlebar mounted on the connecting member. The connecting member has a receiving portion disposed therein. A hydraulic device is mounted in the receiving portion. The hydraulic device includes a hydraulic braking mechanism and at least one connecting tube connected with the hydraulic braking mechanism. A braking device is adapted to mount on a wheel of the bicycle. The at least one connecting tube is connected with the braking device. Two brake levers are respectively mounted on two ends of the handlebar. Each brake lever has a brake cable connected therewith. The brake cable has one end connected to a corresponding brake lever and the other end connected to the hydraulic brake mechanism for relatively driving the brake device.

Abstract: A hydraulic caliper brake assembly for a bicycle comprises a caliper body; a first chamber installed in the caliper body; a first piston installed in the first chamber; a second piston installed in the first chamber; an inner chamber formed between the first piston and the second piston for receiving brake oil; an outer chamber installed between the second piston and the caliper body for receiving brake oil; and an outer valve installed in the second piston for switching flowing of the brake oil between the inner chamber and outer chamber. When a small force is applied, the brake oil will flow into the inner chamber; by closing the outer valve, the first piston is pushed to have the effect of speed reduction; when the braking force is increased, by opening the outer valve, the second piston is pushed to have the effect of emergent braking.

Abstract: A hydraulic brake device includes a carrier body. The carrier body is integrally molded. The carrier body has at least one assembling portion disposed thereon for assembling purpose. The carrier body has at least one connecting portion respectively extending from the at least one assembling portion. At least one hydraulic brake assembly movably is mounted on the at least one connecting portion of the carrier body. The carrier body with the at least one brake assembly are adapted to assemble with a bicycle for providing a stable assembling effect, a high structural strength, and lightweight effect.