3 results about "Parking 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 discloses a charging pile system, comprising a charging pile. The charging pile comprises a charger, a light-emitting device and a controller. The charger is fixedly installed in a charging area and provided with a charging connection unit for charging vehicles, the controller controls the light-emitting device to emit light rays to irradiate the ground of the charging area, and thelight rays irradiating the ground of the charging area form a parking line pattern. The charging pile system has the advantages that the charging pile and the light-emitting device are combined together, the light-emitting device receives a scribing instruction and emits light rays according to the scribing instruction, the light rays irradiate the ground of the parking area, light rays irradiatedon the ground of the parking area form the parking space pattern, the parking space pattern is marked conveniently and rapidly, the cost is low, dynamic adjustment can be achieved according to the occupied specification of vehicles, the parking area can be effectively utilized, efficiency is high, safety and humanization are guaranteed, the parking service market is further expanded, and the utilization rate of the limited parking space of a city is increased.