Patent ID: 9403430
Filing Date: 2016-08-02
CPC Classification: B60K,F01N,F16F,F16L

Claim Text:
1. An insulator that is made of a rubber elastic body and elastically supports an exhaust pipe, the insulator comprising: a first portion that includes a formed first mounting hole, the first mounting hole engaging a vehicle body side; a second portion arranged separately from the first portion, the second portion including a formed second mounting hole, the second mounting hole engaging an exhaust pipe side; a pair of coupling portions that connects the second portion to the first portion, the pair of coupling portions including formed inner stopper surfaces, the inner stopper surfaces facing one another inwardly; and a first stopper surface and a second stopper surface that are respectively formed in the first portion and the second portion with a clearance to the inner stopper surfaces of the pair of the coupling portions, the first stopper surface and the second stopper surface being opposite to one another, wherein at least one of the first stopper surface and the second stopper surface is formed in a curved surface shape as a part of a cylindrical side surface, wherein the first stopper surface or the second stopper surface formed in the curved surface shape as the part of the cylindrical side surface includes a first protrusion extending parallel to an axial direction of the first stopper surface or the second stopper surface, and wherein the first stopper surface or the second stopper surface formed in the curved surface shape as the part of the cylindrical side surface includes a second protrusion extending perpendicular to an axial direction of the first stopper surface or the second stopper surface, the second protrusion intersecting the first protrusion.