Kurashiki Kako Co., Ltd.

Kabushiki Kaisha Toyota Jidoshokki

Kazuo Miyake

Hidehito Kondo

Sumio Uchida

Yoshinori Kondo

A vibration isolator includes: a pair of opposing members fixed to a vehicle body of the vehicle to be located on both sides of a protrusion protruding from an outer circumferential edge of the power train in a direction perpendicular to the principal axes of inertia to oppose to each other in the direction about the principal axes of inertia; a precompressed part provided on part of each of the opposing members facing the protrusion to be precompressed by the opposing member and the protrusion in the direction about the principal axes of inertia; and a contacting part provided on part of each of the opposing members facing the protrusion to be spaced from the protrusion, and contacts the protrusion when the power train vibrates in the direction about the principal axes of inertia.

Vibration isolator

In an engine mount (A) whose axis (X) is oriented in the front to rear direction of a vehicle, a damper weight () is embedded within a toroidal stopper rubber () fixed at its inner periphery to the rear end of an inner cylinder (). The damper weight () is made of, for example, steel plate to have a spiral form and placed to surround the inner cylinder (), thereby itself functioning as a spring in the direction of the axis (X). This structure can ensure a necessary mass for the damper weight while saving space, and prevent the occurrence of an uncomfortable shock when a stopper works.

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Kurashiki, Japan

Kazuo Miyake