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 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 disk assembly includes a friction disk clamped between the supporting plate and the fixing plate. The friction disk is axially movable relative to the supporting plate and the fixing plate. The contact area between the friction disk and either one of the supporting plate and the fixing plate is increased to firmly connect the friction disk and the supporting plate and the fixing plate.
Abstract:
An adjustment device for hydraulic brake systems includes a hollow case and a retractable unit. The hollow case has a rotatable ring to control the retractable unit. One end of the hollow case is connected to a hydraulic hose, and another end is connected to a brake lever. When the user adjusts the rotatable ring, the retractable unit exerts one adjustable pressure on the hydraulic oil constantly so that the user can easily press the brake lever to slow down the vehicles.
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 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:
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 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.