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Vibration damping body and method for fabricating same
| Details |
Inventors: Ichihara, Sunao; Yano, Kunihiko; Niwa, Takahiro; Ishiwa, Shyuichi; Ueda, Katsunori;
Assignee: Toyota Jidosha Kabushiki Kaisha (Aichi, JP); Nichias Corporation (Tokyo, JP)
Primary Examiner: Wilson; Neill R.
Assistant Examiner:
Attorney, Agent or Firm: Flynn, Thiel, Boutell & Tanis
A vibration damping construction, which is useful when it is applied to a vibration isolation washer or a pressed construction such as an oil pan, a ventilation buffle plate, etc. for an automobile, is disclosed, which is so constructed that raw materials, in each of which a rubber visco-elastic layer or such layers is or are disposed on one or two surfaces of a metal plate, are laminated on each other, so that rubber visco-elastic layers are opposite to each other, and adhered to each other to form a laminated body; rectangular pawls are formed on the raw material at the uppermost layer and the laminated body; rectangular cut-off windows, with which the cut and raised pawls can be engaged, are formed in the raw material at the lowermost layer; and these are laminated on each other and bound in one body by spot connection by means of the pawls. |
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DETAILED DESCRIPTION A vibration damping construction according to the present invention is constructed by using a combination of a rigid body with a raw material including a macromolecular visco-elastic layer or two such layers formed on one surface or two surfaces of the rigid body or a combination of such raw materials, laminating members comprising such combinations, and forming them in one body by spot connection.
In the case where a vibration damping body for a vibrating isolation washer is constructed according to the present invention, raw materials, in each of which a rubber visco-elastic layer or such layers is or are disposed on one or two surfaces of a metal plate, are used, which raw materials are laminated on each other, so that rubber visco-elastic layers are opposite to each other, and adhered to each other to form a laminated body; laminated bodies thus obtained or laminated bodies and raw materials are laminated on each other to form a laminated layer construction and caulked mechanically in one body by spot connection by means of a plurality of pawls cut and raised in the thickness direction thereof.
In the case where a vibration damping body for a pressed construction is constructed according to the present invention, a macromolecular visco-elastic layer is formed on a base plate, which is a rigid body, by adhesion, and a plate-shaped member, which is a rigid body, is laminated on the surface of this macromolecular visco-elastic layer, which plate-shaped member is bound with the base plate by spot connection.
In the case where the vibration damping body is applied to a vibration damping washer, in spite of the fact that it is thinner than a prior art vibration damping rubber and it has a high rigidity, it is possible to obtain not only a vibration damping and sound proof property higher than that of the prior art vibration damping rubber but also a good and stable clamping property.
Further it is possible to obtain a small exposed area of the macromolecular visco-elastic layer made of rubber, etc
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Vibration and Earthquake Isolation 
