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Disc brake including a spring for pressing a friction pad against a guiding portion

  • US 4,441,588 A
  • Filed: 10/29/1981
  • Issued: 04/10/1984
  • Est. Priority Date: 11/01/1980
  • Status: Expired due to Term
First Claim
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1. A disc brake comprising:

  • a rotatable disc,a guiding portion extended in the direction of the axis of the disc,a friction pad disposed on one side of the rotatable disc and being supported on the guiding portion and being displaceable relative thereto in the direction of the axis of the disc,a pad spring provided to press the friction pad against the guiding portion in the direction of the radius of the disc and in one direction along the circumference of the disc,wherein the pad spring has two leg portions which respectively abut with abutting surface portions of the friction pad, with one leg portion pressing the friction pad in the direction of the radius of the disc and in one circumferential direction, and the other leg portion pressing the friction pad in the direction of the radius of the disc and in the other circumferential direction, and the pressing force in said one circumferential direction is larger than that in the other circumferential direction, andwherein said abutting surface portions are provided on two inclined surfaces which are symmetrical with respect to the circumferential center line of the friction pad, said two leg portions are symmetrical with respect to the circumferential center line of the pad spring, and the center line of the pad spring is displaced from the center line of the friction pad in the direction of the circumference of the disc.

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