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Hydraulic brake system

  • US 9,969,372 B2
  • Filed: 10/05/2016
  • Issued: 05/15/2018
  • Est. Priority Date: 10/05/2015
  • Status: Active Grant
First Claim
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1. A hydraulic brake system comprising:

  • a damping device configured to attenuate pressure pulsation of brake oil discharged according to a driving of a pump,wherein the damping device includes;

    a sleeve fixed to a bore that is connected to a discharge end of the pump and having an opened side;

    a damping piston slidably installed inside the sleeve; and

    an elastic member provided inside the sleeve and configured to elastically support the damping piston,wherein a slot having a width which is varied is formed at an inner circumferential surface of the sleeve in a direction in which the brake oil flows so that a variable orifice is formed between the damping piston and the sleeve,wherein the hydraulic brake system further comprises a first stopper coupled to the opened side of the sleeve, configured to support the elastic member, and configured to limit a movement distance of the damping piston,wherein a first coupling depression is formed at an outer circumferential surface of the sleeve, andwherein the first stopper includes;

    a first body configured to expose a portion of an opened aperture of the sleeve; and

    a plurality of first rods bended and extending from the first body to be coupled to the first coupling depression.

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