Vibration dampening device with an elastic body and viscous liquid

A fluid-filled mount having a case (13) having a mounting plate (13D) with mounting holes (13B) and fixing claws (13C), and also having a cup (13A) containing a high viscous fluid (4), and the case (13) receives vibrations from outside, a cylindrical case (16) having a mounting plate (16C) with mounting holes (16B) and also having a cylinder (16A);

• a stud (14) having an axial through hole (14A) for filling of said high viscous fluid (4) and also having a tapped hole (14B) provided in one end of axial through hole (14A) in said stud (14) and a damping plate (15) fixed to another end of said stud (14);
• an elastic body (17) having said cylindrical case (16) embedded in said elastic body (17) and the stud (14) secured in a center hole in said elastic body (17), said elastic body (17) also having a tapered outside surface;
• and
• said high viscous fluid (4) filled in said cup (13A) of the case (13);
• further characterized in that said elastic body (17) is integrated with said stud (14) having said damping plate (15) fixed to an end of said stud (14);
• said elastic body (17) also integrated with said cylindrical case (16) such that said elastic body (17) is locked in the cup (13A) of the case (13), and that the fixing claws (13C) of said mounting plate (13D) of said case (13) are bent onto the mounting plate (16C) of said cylindrical case (16) to fix these cases together, and that said high viscous fluid (4) is filled into said cup (13A) of said case (13) through said axial through hole (14A) of said stud (14) so that said damping plate (15) is provided in said high viscous fluid (4), and that said mounting holes (13B) in said mounting plate (13D) of said case (13) are in register with said mounting holes (16B) in said mounting plate (16C) of said cylindrical case (16) so that mount can be fitted to the bracket (3) by inserting bolts (128) through said mounting holes (13B) and (16B):
• characterized in that said damping plate (15) has a plurality of openings (15B);
• and also has valves (20B) which are made of spring material which usually shut said opening (15B) and open said opening (15B) when high impact is received, thereby preventing abrupt rising of the pressure of said high viscous fluid (4).