Dynamic damper mounting structure

1. A mounting structure for mounting a dynamic damper on a vehicle body frame of a vehicle, comprising:

a dynamic damper bracket connecting the dynamic damper to the vehicle body frame;

a collar member rigidly fixed to the vehicle body frame;

a mounting bracket which is mounted above the vehicle body frame, and which is connected to the collar member through an elastic bush; and

a fixing member which fixes the dynamic damper bracket and the collar member to the vehicle body frame,

wherein an end of the collar member is on the vehicle body frame and the dynamic damper bracket is on an opposite end of the collar member.

2. The mounting structure as claimed in claim 1 , wherein the fixing member comprises a bolt penetrating the collar member having a cylindrical tubular shape; and

wherein both the dynamic damper bracket and the collar member are fastened by the bolt penetrating the collar member to the vehicle body frame.

3. The mounting structure as claimed in claim 1 ,

wherein the mounting bracket is connected to an anti-vibration device;

wherein the anti-vibration device is connected to a power source which is a vibration generation source; and

wherein the dynamic damper is disposed between the anti-vibration device and the vehicle body frame.

4. The mounting structure as claimed in claim 3 , wherein the mounting bracket has an opening positioned between the dynamic damper and the anti-vibration device; and

wherein the dynamic damper is disposed at a position where the dynamic damper overlaps the opening.

5. The mounting structure as claimed in claim 4 , wherein the dynamic damper and the anti-vibration device are arranged in line in a front-rear direction of the vehicle.

6. The mounting structure as claimed in claim 1 , wherein

the mounting bracket is coupled to a source of vibrations and transmits the vibrations to the vehicle body frame through the elastic bush and to the dynamic damper through the elastic bush and the dynamic damper bracket, and

the dynamic damper generates in response to the vibrations from the mounting bracket a cancellation force at the vehicle body frame to cancel the vibrations from the mounting bracket.

7. A mounting structure for mounting a dynamic damper on a vehicle body frame of a vehicle, comprising:

a dynamic damper bracket connecting the dynamic damper to the vehicle body frame;

a collar member rigidly fixed to the vehicle body frame;

a mounting bracket which is mounted above the vehicle body frame, and which is elastically connected to the collar member; and

a fixing member which fixes the dynamic damper bracket and the collar member to the vehicle body frame,

wherein the fixing member comprises a bolt penetrating the collar member having a cylindrical tubular shape, and

wherein both the dynamic damper bracket and the collar member are fastened by the bolt penetrating the collar member to the vehicle body frame.

8. A mounting structure for mounting a dynamic damper on a vehicle body frame of a vehicle, comprising:

a dynamic damper bracket connecting the dynamic damper to the vehicle body frame;

a collar member rigidly fixed to the vehicle body frame;

a mounting bracket which is mounted above the vehicle body frame, and which is elastically connected to the collar member; and

a fixing member which fixes the dynamic damper bracket and the collar member to the vehicle body frame,

wherein the mounting bracket is connected to an anti-vibration device,

wherein the anti-vibration device is connected to a power source which is a vibration generation source,

wherein the dynamic damper is disposed between the anti-vibration device and the vehicle body frame,

wherein the mounting bracket has an opening positioned between the dynamic damper and the anti-vibration device,

wherein the dynamic damper is disposed at a position where the dynamic damper overlaps the opening, and

wherein the dynamic damper and the anti-vibration device are arranged in line in a front-rear direction of the vehicle.