A parking brake unit (101) of a brake device (100) for braking a wheel (1) by supply of hydraulic fluid includes a first piston (110) formed in a cylindrical shape, the first piston (110) having a first engaging part (113) on an inner circumference thereof, the first piston (110) being configured to move in first direction by pressure of the hydraulic fluid supplied to a pressure chamber (105) defined in the back thereof, a first biasing member (118) configured to bias the first piston (110) in second direction, opposite to the first direction, a second piston (120) slidably provided on the inner circumference of the first piston (110), the second piston (120) having a second engaging part (123) on an outer circumference thereof, and an engaging member (130) configured to cause the first engaging part (113) and the second engaging part (123) to engage with each other, in which the second piston (120) causes a brake lining (2) to move in direction bringing the wheel (1) to be in a braking state, when the first piston (110) moves in the second direction.
PARKING BRAKE UNIT
FESTSTELLBREMSEINHEIT
UNITÉ DE FREIN DE STATIONNEMENT
2019-09-04
Patent
Elektronische Ressource
Englisch
IPC: | F16D COUPLINGS FOR TRANSMITTING ROTATION , Nicht schaltbare Kupplungen / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / B61H Bremsen oder andere Verzögerungseinrichtungen ausgebildet für Schienenfahrzeuge , BRAKES OR OTHER RETARDING APPARATUS PECULIAR TO RAIL VEHICLES |
Parking cylinder, parking brake unit, brake clamp unit, brake system and vehicle
Europäisches Patentamt | 2020
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