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发明公开
CN107269328A 涡轮增压器用轴承机构 无效 - 撤回

涡轮增压器用轴承机构
摘要：
本发明提供一种涡轮增压器用轴承机构，谋求防止异响的发生及运转效率的提高，并且，谋求制造成本的降低。本发明的涡轮增压器用轴承机构(1)配备有转子轴(10)、推力角接触球轴承(20)、保持架(60)和壳体(30)。推力角接触球轴承(20)配备为两个，具有能够彼此相对旋转地被支承的内圈(21)和外圈(22)，转子轴(10)插入贯通于内圈(21)。保持架(60)保持外圈(22)。壳体(30)容纳转子轴(10)、推力角接触球轴承(20)以及保持架(60)，构成轴承箱。油呈膜状地介于内圈(21)与转子轴(10)的外周面(10c)之间，形成油膜减振器(50)。并且，内圈(21)经由油膜减振器(50)伴随着转子轴(10)的旋转而一起旋转。
摘要（英）：

The present invention has been achieved under such a background to provide a bearing structure of a turbocharger that can prevent generation of unusual noise, improve operation efficiency, and reduce manufacturing costs. A bearing structure (1) of a turbocharger includes a rotor shaft (10), two angular ball bearings (20), a retainer (60), a housing (30), and an oil film damper (50). Each of the angular ball bearings includes an inner ring (21) and an outer ring (22) that are supported in relatively rotatable manner. The rotor shaft (10) is inserted into the inner ring (21). The retainer (60) holds the outer ring. The housing (30) houses therein the rotor shaft (10), the angular ball bearings (20), and the retainer (60) to constitute a bearing housing. The oil film damper (50) is formed of oil in a film state and is interposed between the inner ring (21) and an outer peripheral surface (10c) of the rotor shaft (10). The inner ring (21) is configured to rotate with rotation of the rotor shaft (10) via the oil film damper (50).

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