Roll mount device for vehicle

1. A roll mount device for a vehicle comprising:

a front mount configured to be connected to a power train;

a rear mount configured to be connected to a vehicle body; and

a rod disposed between the front mount and the rear mount,

wherein the front mount comprises:

a core configured to be connected to the power train to receive vibration transmitted from the power train;

an outer pipe disposed outside the core and spaced from the core by a predetermined distance with respect to a radial direction of the core;

an elastic body disposed between the core and the outer pipe to absorb vibration transmitted thereto from the core;

a stopper disposed on an outer surface of the core to be spaced from an inner surface of the outer pipe by a predetermined distance; and

an insert member disposed on an outer surface of the core, wherein the elastic body and the stopper are integrally formed on an outer surface of the insert member,

wherein the insert member includes a concave portion having a curved shape at a central portion of the insert member in a circumferential direction thereof,

wherein the elastic body is disposed on the central portion of the insert member, and

wherein a thickness of the central portion of the insert member is smaller than a thickness of an edge portion of the insert member.

2. The roll mount device of claim 1 , wherein the stopper is configured to come into contact with the inner surface of the outer pipe when vibration with an amplitude equal to or larger than a predetermined threshold amplitude is transmitted to the core.

3. The roll mount device of claim 2 , wherein the stopper is configured not to come into contact with the inner surface of the outer pipe when vibration with an amplitude less than the predetermined threshold amplitude is transmitted to the core.

4. The roll mount device of claim 1 , wherein the elastic body is disposed on the outer surface of the core and in contact with the inner surface of the outer pipe.

5. The roll mount device of claim 1 , wherein the stopper comprises a first stopper and a second stopper disposed at both sides of the elastic body, respectively, and each of the first stopper and the second stopper is disposed in the circumferential direction of the insert member.

6. The roll mount device of claim 1 , wherein the outer pipe is disposed coaxially with the core.