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Electronic brake system

  • US 10,457,261 B2
  • Filed: 05/23/2018
  • Issued: 10/29/2019
  • Est. Priority Date: 05/23/2017
  • Status: Active Grant
First Claim
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1. An electronic brake system comprising:

  • a hydraulic pressure supply apparatus which generates a hydraulic pressure by using a piston operated by an electrical signal output corresponding to a displacement of a brake pedal, and includes a first pressure chamber provided at one side of a piston movably accommodated in a cylinder block to be connected to one or more wheel cylinders and a second pressure chamber provided at the other side of the piston to be connected to one or more wheel cylinders;

    a first hydraulic passage communicating with the first pressure chamber;

    a second hydraulic passage branched from the first hydraulic passage;

    a third hydraulic passage branched from the first hydraulic passage;

    a fourth hydraulic passage communicating with the second pressure chamber;

    a fifth hydraulic passage branched from the fourth hydraulic passage to join with the second hydraulic passage;

    a sixth hydraulic passage branched from the fourth hydraulic passage to join with the third hydraulic passage;

    a first control valve provided on the second hydraulic passage to control the flow of oil;

    a second control valve provided on the third hydraulic passage to control the flow of oil;

    a third control valve provided on the fifth hydraulic passage to control the flow of oil;

    a fourth control valve provided on the sixth hydraulic passage to control the flow of oil;

    a first hydraulic circuit configured such that the second hydraulic passage or the fifth hydraulic passage is connected to two wheel cylinders, respectively; and

    a second hydraulic circuit configured such that the third hydraulic passage or the sixth hydraulic passage is connected to two wheel cylinders, respectively,wherein the first control valve to the fourth control valve are provided as check valves that allow the flow of oil in the direction from the hydraulic pressure supply apparatus to the wheel cylinders and blocks the flow of oil in the opposite direction.

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