To provide a cylindrical vibration isolator for a motor mount with a novel structure which can improve vibration isolation performance in a high-frequency area required for the motor mount while suppressing an influence to a spring characteristic.SOLUTION: In a cylindrical vibration isolator 10 for a motor mount in which an inner shaft member 12 and an outer cylinder member 14 are connected to each other by a main body rubber elastic body 16, the main body rubber elastic body 16 comprises a pair of rubber legs 28, 28 for connecting the inner shaft member 12 and the outer cylinder member 14 at both sides of the inner shaft member 12 in an axial vertical direction, protrusion rubber 46 protruding toward the inner shaft member 12 side from the outer cylinder member 14 side is arranged at a lightening hole 40 which is penetratingly formed at either of a pair of the rubber legs 28, 28 in an axial direction, and the protrusion rubber 46 is formed as abutment rubber 56 which abuts on the inner shaft member 12 side in a state of being attached to a vehicle.SELECTED DRAWING: Figure 2
【課題】ばね特性への影響を抑えつつ、モータマウント要求される高周波域での防振性能の向上を実現することができる、新規な構造のモータマウント用筒型防振装置を提供する。【解決手段】インナ軸部材12とアウタ筒部材14が本体ゴム弾性体16によって連結されたモータマウント用筒型防振装置10であって、本体ゴム弾性体16がインナ軸部材12とアウタ筒部材14とをインナ軸部材12の軸直角方向両側で連結する一対のゴム脚28,28を備えており、一対のゴム脚28,28の一方において軸方向に貫通して形成された肉抜孔40には、アウタ筒部材14側からインナ軸部材12側へ向けて突出する突出ゴム46が設けられており、突出ゴム46が車両への装着状態においてインナ軸部材12側に当接する当接ゴム56とされている。【選択図】図2
CYLINDRICAL VIBRATION ISOLATOR FOR MOTOR MOUNT
モータマウント用筒型防振装置
20.09.2024
Patent
Elektronische Ressource
Japanisch
CYLINDRICAL VIBRATION ISOLATION DEVICE FOR MOTOR MOUNT
Europäisches Patentamt | 2025
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