LUBRICATING STRUCTURE OF ROTARY SHAFT

• Main Authors: NAKAMURA, KENSUKE, YAMAZAKI, MASAKAZU, HIDEO, UESHIMA, TORU, KANO, NOBUYOSHI, KAHAMATSU, TOMOKI, OKITA, KAWASHIMA, FUMINORI, SHIMIZU, CHIHARU
• Format: Patent
• Language: English; Korean
• Published: 15.12.1999
• Edition: 6
• Subjects: BEARINGS; BLASTING; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; CRANKCASE VENTILATING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; LUBRICATING INTERNAL COMBUSTION ENGINES; LUBRICATING OF MACHINES OR ENGINES IN GENERAL; MACHINES OR ENGINES IN GENERAL; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; SHOCK-ABSORBERS; SPRINGS; STEAM ENGINES; THERMAL INSULATION IN GENERAL; WEAPONS

배런서 호울더(29)에 장착한 동일부재로서되는 2개의 베어링푸시(52,52)에 2개의 배런서 샤프트(21,22)를 지지하고, 각 베어링푸시(52,52)에 급유하는 윤활유로(29,∼29)를 당해 베어링푸시(52,52)의 중심(0)에서 윗쪽으로 거리(δ)만큼 편기시켜서 형성한다. 각 베어링푸시(52,52)는 180°로 상이하는 중심각(θ)을 가지는 2개의 유공(52,52,52,52)을 갖추고 있으며, 배런서 샤프트(22)의 베어링푸시(52)의 2개의 유공(52,52)을 윤활유로(29,29)에 각각 연통시키고 또한 배런서 샤프트(21)의 베어링푸시(52)의 한쪽 유공(52)을 윤활유로(29)에 연통시킴과 동시에 다른쪽 유공(52)을 윤활유로(29)에서 벗어나서 폐색시킨다. 이로 인하여, 복수개의 회전축의 베어링푸시에 급유하는 윤활유로의 하류단을 브라인드 플러그 등의 특별한 폐색부재를 사용하지 않고 폐색할 수가 있다. An engine (E) has two balancer shafts (21,22) supported on two bearing bushings (52a,52b) which are made of the same material and mounted to a balancer holder. Lubricating oil passages (293,294,295) for supplying oil to the bearing bushings are defined offset upwards from the centers O of the bearing bushings (52) and by a distance delta . Each of the bearing bushings has two oil bores (52a1,52b2) having a center angle other than 180 DEG . The two oil bores in the bearing bushing of one balancer shaft communicate with the lubricating oil passages, and one of the oil bores in the bearing bushing of another balancer shaft communicates with the lubricating oil passage, while the other oil bore of that another balancer shaft is closed to keep out of the lubricating oil passage. Thus, downstream ends of the lubricating oil passages for supplying the oil to the bearing bushings of the plurality of rotary shafts can be closed without use of a special closing member such as a blind plug.