| 摘要 |
PURPOSE: A disc brake structure of a vehicle is provided to improve working efficiency, prevent partial wearing of a brake pad and prevent partial damage of the brake disc by using a disc pressurizing device with compressed air in changing the brake pad. CONSTITUTION: A disc brake structure of a vehicle has a disc pressurizing device(10). The disc pressurizing device retracts a piston(6) inside a caliper(1) by pressurizing a surface of a brake disc(4) in changing a brake pad(5) because the disc pressurizing device extends to separate a space between the caliper and the brake disc with compressed air. The disc pressurizing device comprises an air pipe member(11) and a bellows tube member(12). The air pipe member is connected to an air compressor. The bellows tube member is connected to an end of the air pipe member and extended to separate a space(C) between the caliper and the brake disc with compressed air supplied selectively. A check valve(21) is installed to the air pipe member to prevent compressed air from flowing backward. An air exhaust valve(22) is installed to the bellows tube member to exhaust compressed air outside. A pair of pressurizing plates(23,24) is stuck to the bellows tube member to support an inner surface of the caliper and pressurize one surface of the brake disc. A rod knob(25) is combined to one of the pressurizing plates to insert or remove the bellows tube member from the space between the caliper and the brake disc. Thereby, working efficiency is improved and partial wearing of the brake pad and partial damage of the brake disc are prevented.
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