US 7,464,918 B2
Liquid sealing type vibration control device
Shingo Hatakeyama, Osaka (Japan); Masaaki Ito, Osaka (Japan); and Tomoyoshi Edo, Osaka (Japan)
Assigned to Toyo Tire & Rubber Co., Ltd., Osaka (Japan)
Appl. No. 10/552,254
PCT Filed Jan. 09, 2004, PCT No. PCT/JP2004/000134
§ 371(c)(1), (2), (4) Date Jul. 10, 2006,
PCT Pub. No. WO2004/090373, PCT Pub. Date Oct. 21, 2004.
Claims priority of application No. 2003-102031 (JP), filed on Apr. 04, 2003; and application No. 2003-424012 (JP), filed on Dec. 22, 2003.
Prior Publication US 2006/0267259 A1, Nov. 30, 2006
Int. Cl. F16M 13/00 (2006.01)
U.S. Cl. 267—140.13  [267/219] 11 Claims
OG exemplary drawing
 
1. A liquid sealing type vibration control device comprising:
a first attachment fitting;
a second attachment fitting;
a vibration isolating base body made of rubber-like elastic material interconnecting these;
a diaphragm attached to the second attachment fitting to form a liquid sealing chamber between the vibration isolating base body and itself;
a partition body comparting the liquid sealing chamber into a first liquid chamber on a side of the vibration isolating base body and a second liquid chamber on a side of the diaphragm; and
an orifice putting the first liquid chamber and the second liquid chamber into communication with each other,
the partition body including an elastic partition membrane and a pair of lattice members regulating a displacement amount of the elastic partition membrane from both sides thereof,
wherein the elastic partition membrane is provided, on both faces thereof, with respective rib groups in a projecting manner;
the rib groups each consist of a plurality of first ribs and a plurality of second ribs mingled with one another;
the first ribs are arranged on a surface of the elastic partition membrane so as to be capable of surrounding lattice holes every lattice hole or a plurality of lattice holes and the second ribs are arranged on the surface of the elastic partition membrane in a distributed fashion;
the first ribs are set in such a height dimension that top parts of them can be situated apart from the lattice members; and
the second ribs are set in such a height dimension that top parts of them abut on the lattice members and are set in a smaller rib width than the first ribs.