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FLUID-FILLED TYPE VIBRATION DAMPING DEVICE AND MANUFACTURING METHOD THEREOF

  • US 20120242021A1
  • Filed: 03/08/2012
  • Published: 09/27/2012
  • Est. Priority Date: 03/25/2011
  • Status: Active Grant
First Claim
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1. A fluid-filled type vibration damping device comprising:

  • a first mounting member;

    a second mounting member including a base component and a tubular mating component;

    a main rubber elastic body connecting the first mounting member and the second mounting member;

    a fluid chamber filled with a non-compressible fluid and adapted to receive input of vibration;

    a mate-fastened portion constituted by externally fitting the tubular mating component onto an outer circumferential face of the base component by means of a diameter-constricting caulking with a sealing rubber clasped therebetween;

    a caulking tube portion that is provided at a portion of the tubular mating component extending outward in an axial direction beyond a sealed section of the mate-fastened portion sealed by the sealing rubber; and

    at least one positioning projection provided on the base component at a section where the caulking tube portion is externally fitted,wherein a diametrical position of the tubular mating component at the sealed section is determined by contact of the caulking tube portion against an outside peripheral face of the positioning projection so as to define a diametrical positioning portion; and

    wherein the caulking tube portion is constricted in diameter and held in engagement with at least one axial edge portion of the positioning projection so as to form an axial positioning portion.

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