An engine mount including: an inner fitting having a first flange at a first axial end thereof; a cylindrical outer fitting having at a first axial end a second flange extending outwardly in the axis-perpendicular direction and positioned in opposition to but spaced apart from the first flange portion in an axial direction; a side rubber elastic body elastically connecting the first and second flanges; a main rubber elastic body elastically connecting the inner fitting and the outer fitting in a direction of axial elongation of the side portion rubber elastic body; and a hollow portion extending from a second axial end toward a first axial end of the main rubber elastic body with a distal and thereof reaching an interior of the side rubber elastic body, thereby bifurcating the main rubber elastic body at an inside circumferential face of the outer fitting. The engine mount is positioned with the axial direction facing a left-right direction of the vehicle.
1. An engine mount for use in a vehicle, comprising:
an inner fitting;
a cylindrical outer fitting disposed surrounding the inner fitting and positioned between two axial ends of the inner fitting; and
a main rubber elastic body elastically connecting an outer circumferential face of the inner fitting and an inner circumferential face of the outer fitting in a direction of axial elongation of a side rubber elastic body, the main rubber elastic body being compressed by an initial load of an engine applied thereto in an axis perpendicular direction, wherein
the inner fitting has a first flange that extends outwardly in the axis-perpendicular direction at one circumferential position at a first axial end thereof over a range equivalent to approximately one-fourth of a circumference of the inner fitting;
the outer fitting has, at a first axial end thereof, a second flange extending outwardly in the axis-perpendicular direction at the same one circumferential position where the first flange is located, and is positioned in opposition to, but spaced apart from, the first flange portion in an axial direction;
the side rubber elastic body elastically connects the first and second flanges;
a hollow portion is located at the circumferential position where the first and second flanges are located, and extends from a second axial end toward a first axial end of the main rubber elastic body with a distal end thereof reaching as far as an interior of the side rubber elastic body, and bifurcating the main rubber elastic body at an inside circumferential face of the outer fitting so as to substantially isolate the side rubber elastic body from the main rubber elastic body; and
the engine mount is positioned with the axial direction facing a left-right direction of the vehicle, and is attached with the inner fitting to either a component on an engine side or a component on a body side of the vehicle, and with the outer fitting to either a component on the engine side or a component on the body side, so that the main rubber elastic body is disposed above or below the inner fitting, and the inner and outer fittings extend radially outward on a side where the main rubber elastic body is disposed.
2. An engine mount according to claim 1 , wherein the hollow portion is situated at a medial location in the circumferential direction of the main rubber elastic body.
3. An engine mount according to claim 1 , wherein the inner fitting is of cylindrical shape, and is attached to the component on the engine side or the component on the body side by means of a mounting member of a rod which is passed through a bore of the inner fitting.
4. An engine mount according to claim 1 , wherein the outer fitting is integrally formed with an engine-side bracket or with a body-side bracket.
5. An engine mount according to claim 1 , wherein a lateral stopper mechanism and/or a vertical stopper mechanism is provided between the inner fitting and the outer fitting to limit an amount of displacement of the inner fitting relative to the outer fitting.