Combined vehicle brake with electromechanically actuable parking brake

Combined vehicle brake with electromechanically actuable parking brake

  • CN 105,333,037 A
  • Filed: 10/21/2008
  • Published: 02/17/2016
  • Est. Priority Date: 10/27/2007
  • Status: Active Application
First Claim
Patent Images

1. a combined vehicle brake, this combined vehicle brake has the Service Brake of energy hydraulic actuating and the locking device for a vehicle of energy electromechanically, wherein, hydraulic working pressure chamber (6) is defined in brake casing (20) by brake piston (5), in order to perform service brake operation, this brake piston (5) can, by hydraulic pressure medium effect, make described brake piston (5) can activated to obtain braking effect along piston longitudinal axis (A);

  • Described locking device for a vehicle acts on described brake piston (5) by means of transmission device (1), and wherein said transmission device (1) converts the rotary motion of electromechanical actuator (7) to translational motion and activates described brake piston (5) to perform parking braking process and to keep described brake piston to be in the position activated;

    described transmission device (1) has the leading screw (2) and nut (3) that contact with each other via multiple rolling element (4), it is characterized in that, described rolling element (4) is arranged to can two blocked parts (23,24) restrictively move in threaded line between, in described rolling element (4) and one of them blocked part (23), namely spring element (10) is provided with between the first blocked part, described spring element (10) makes described rolling element (4) can slide and when having when load operation of described transmission device (1), described rolling element (4) be rolled when the zero load operation of described transmission device (1), thus until brake lining (34) reclines on the disc brake rotor, rolling element (4) is all slide and only just start to roll under the effect of load, leading screw (2) is supported on brake casing (20) via the flange (19) be connected with leading screw (2) and axial bearing (18).

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