4 results about "Disc brake" patented technology

Provided is a disk brake improved in production efficiency by simplifying a structure for retaining the braking force of a parking brake. A disk brake is equipped with a piston holding mechanism having a ball-and-ramp mechanism in which balls are moved by rotation transmitted from a motor, causing a rotary-rectilinear ramp to press a piston. The rotary-rectilinear ramp has an external thread engaged with an internal thread formed on a base nut immovable in a rotor axis direction relative to a caliper body. The external thread, when a force is applied thereto from the piston in the rotor axis direction, can retain the position of the rotary-rectilinear ramp in the rotor axis direction. Thus, the structure for retaining the braking force of the parking brake can be simplified to improve the production efficiency.

The invention relates to the technical field of design vehicle braking, in particular to a city bus wheel edge disc braking and flywheel energy-storage integrated braking device. Wheel hubs are fixedly connected with half axles through half axle flanges, car tires and the wheel hubs rotate together with the half axles, electromagnetic clutches are used for controlling connecting or separating of energy-storage flywheels and the half axles, when a disc brake in a car conducts braking, the electromagnetic clutches are jointed, the car tires drive the energy-storage flywheels to rotate, and when the rotating speed of the energy-storage flywheels is higher than the rotating speed equivalent of the car tires, connection between the energy-storage flywheels and the car tires is broken off; and when the car is started, the electromagnetic clutches are jointed, the energy-storage flywheels provide auxiliary driving moment for the car tires, when the rotating speed of the energy-storage flywheels is lower than the rotating speed equivalent of the car tires, the electromagnetic clutches are separated, and connection between the energy-storage flywheels and the car tires is broken off. The city bus wheel edge disc braking and flywheel energy-storage integrated braking device integrates the functions and the advantages of drive-by-wire disc friction braking and flywheel energy storage, the structure is compact, response is rapid, and energy storage is efficient.

The invention discloses an improved manual release device for an electro-hydraulic disc brake. The improved manual release device comprises a base, an operating oil cylinder, a piston rod A, a force application rod seat, a connecting rod, a rotary support, a working oil cylinder, a piston rod B and an oil tank, wherein the operating oil cylinder is communicated with the oil tank through an oil way; a steel ball is arranged in the middle of the oil way for blocking; the working oil cylinder is communicated with the oil tank through two oil ways; a steel ball is arranged in the middle of the first oil way for blocking and is tightly pressed by an unloading screw; the second oil way is blocked by a safety electromagnetic valve; the operating oil cylinder is communicated with the working oil cylinder through an oil way; and a steel ball is arranged in the middle of the oil way for blocking. The function of the improved manual release device is that under the condition of power failure, the brake is opened manually or the brake is manually opened when a pusher of the brake is in failure; and in addition, the device is equipped with the safety electromagnetic valve, the accident potential caused by the fact that braking cannot completed during baking because pressure is forgotten to be relieved when the brake is opened due to maintenance or emergency power off is avoided.