Abstract: The vibration isolator includes: a first attachment member to be attached to one of a vibration generating unit or a vibration receiving unit; a second attachment member to be attached to another of the vibration generating unit or the vibration receiving unit; an elastic member that is provided at the second attachment member and elastically connects the first attachment member and the second attachment member; a convex portion protruded toward the first attachment member with reference to the outer surface of the elastic member opposed to the first attachment member; and a concave portion that is recessed at a region of the outer surface positioned on the base end side of the convex portion, that forms an extension portion at a side wall portion of the convex portion, and forms an opposed face opposed to the extension portion.

Abstract: An anti-vibration device (1) includes a tubular first attachment member (10), a second attachment member (20), an elastic body (70), and a separating member (50) that separates a liquid chamber in the first attachment member into a main liquid chamber (80) and a secondary liquid chamber (90). A membrane is held by the separating member, and the membrane and a diaphragm are formed integrally.

Abstract: An anti-vibration device (1) includes a tubular first attachment member (10), a second attachment member (20), an elastic body (70), and a separating member (50) that separates a liquid chamber in the first attachment member into a main liquid chamber (80) and a secondary liquid chamber (90). A tapered surface (502) decreasing in diameter towards another side in the axial direction is formed on an end on the other side in the axial direction of an outer circumferential surface of the separating member, a bend portion (101) bent to follow the tapered surface is formed on an end on the other side in the axial direction of the first attachment member, and an end (301) on the outer circumferential side of a diaphragm (30) is sandwiched between the tapered surface and the bend portion.

Abstract: The vibration isolator includes: a first attachment member to be attached to one of a vibration generating unit or a vibration receiving unit; a second attachment member to be attached to another of the vibration generating unit or the vibration receiving unit; an elastic member that is provided at the second attachment member and elastically connects the first attachment member and the second attachment member; a convex portion protruded toward the first attachment member with reference to the outer surface of the elastic member opposed to the first attachment member; and a concave portion that is recessed at a region of the outer surface positioned on the base end side of the convex portion, that forms an extension portion at a side wall portion of the convex portion, and forms an opposed face opposed to the extension portion.

Abstract: An anti-vibration device (1) includes a tubular first attachment member (10), a second attachment member (20), an elastic body (70), and a separating member (50) that separates a liquid chamber in the first attachment member into a main liquid chamber (80) and a secondary liquid chamber (90). A membrane is held by the separating member, and the membrane and a diaphragm are formed integrally.

Abstract: An anti-vibration device (1) includes a tubular first attachment member (10), a second attachment member (20), an elastic body (70), and a separating member (50) that separates a liquid chamber in the first attachment member into a main liquid chamber (80) and a secondary liquid chamber (90). A tapered surface (502) decreasing in diameter towards another side in the axial direction is formed on an end on the other side in the axial direction of an outer circumferential surface of the separating member, a bend portion (101) bent to follow the tapered surface is formed on an end on the other side in the axial direction of the first attachment member, and an end (301) on the outer circumferential side of a diaphragm (30) is sandwiched between the tapered surface and the bend portion.

Abstract: An engine mount structure includes: an engine bracket 1 mounted to an engine; and an anti-vibration device 2 having an outer tube 7 fixed to a vehicle body, an inner tube 6 to which a front end portion of the engine bracket is inserted and fitted, and a rubber elastic body 8 interposed between the outer tube and the inner tube, wherein an engine bracket insertion hole 9 provided to the inner tube is offset from the center L of a mounting portion of the inner tube mounted to the rubber elastic body, toward the engine bracket. Accordingly, the bracket extending from the engine is allowed to have a natural frequency departing as much as possible from a natural frequency of the engine, and simultaneously, a reduction in weight can be achieved.

Abstract: An engine mount structure includes: an engine bracket 1 mounted to an engine; and an anti-vibration device 2 having an outer tube 7 fixed to a vehicle body, an inner tube 6 to which a front end portion of the engine bracket is inserted and fitted, and a rubber elastic body 8 interposed between the outer tube and the inner tube, wherein an engine bracket insertion hole 9 provided to the inner tube is offset from the center L of a mounting portion of the inner tube mounted to the rubber elastic body, toward the engine bracket. Accordingly, the bracket extending from the engine is allowed to have a natural frequency departing as much as possible from a natural frequency of the engine, and simultaneously, a reduction in weight can be achieved.