Patent ID: 9027912
Filing Date: 2015-05-12
Classification: F16F

Abstract:
1. A vibration damping device comprising: an inner shaft member; a main rubber elastic body fixed to an outer circumference surface of the inner shaft member; an outer bracket attached to an outer circumference surface of the main rubber elastic body; and at least one locking groove formed extending in an axial direction on the outer circumference surface of the main rubber elastic body, wherein the outer bracket is equipped with a die formed tube shaped bracket main unit, and the bracket main unit has at least one locking projection formed extending in the axial direction projecting to an inner circumference surface on the bracket main unit, the locking projection of the bracket main unit is inserted and locked in a circumference direction in the locking groove of the main rubber elastic body with the bracket main unit being fitted externally onto the outer circumference surface of the main rubber elastic body, an abutting protruding part projecting to an inner circumference side is formed on one axial end of the bracket main unit, and the abutting protruding part overlaps in the axial direction on an outer circumference end part of the main rubber elastic body, a ring shaped press fit metal fitting is press fit and fixed to another axial end of the bracket main unit, the inner circumference surface of the bracket main unit and an inner circumference surface of the press fit metal fitting cooperate and are attached to the outer circumference surface of the main rubber elastic body, a retaining protruding part projecting to an inner circumference side of the press fit metal fitting overlaps in the axial direction on the outer circumference end part of the main rubber elastic body, and the main rubber elastic body is held between axially opposed surfaces of the abutting protruding part and the retaining protruding part.