OUTBOARD ENGINE

• Main Authors: TAKATSU YUTO, KOBAYASHI KAZUYUKI
• Format: Patent
• Language: English; Japanese
• Published: 05.08.2021
• Subjects: BEARINGS; BLASTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GEARING; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; LUBRICATING; MARINE PROPULSION OR STEERING; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; RELATED EQUIPMENT; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; SHIPS OR OTHER WATERBORNE VESSELS; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS

To prevent shortening of the lifetime of a bearing which supports a drive shaft of an outboard engine caused by reduced lubricity caused by the temperature increase of a lubricating oil.SOLUTION: An oil introduction flow path 30 for causing a lubricating oil taken in from an outer peripheral side of a rotor 11 to flow to a drive shaft 3 side following rotation of the rotor is formed in the rotor 11 rotated integrally with the drive shaft 3 whose lower part is supported by a housing 1 via a bearing 5 and driven by an engine. The lubricating oil having flown through the oil introduction flow path 30 to the drive shaft 3 side is introduced into the bearing 5 to cool the lubricating oil in the bearing 5, thereby maintaining the lubricated state of the bearing 5 appropriate.SELECTED DRAWING: Figure 3 【課題】潤滑オイルの温度上昇に起因した潤滑性の低下により、船外機のドライブシャフトを支持するベアリングの寿命が短くなるのを防止する。【解決手段】下部がベアリング５を介してハウジング１に支持されてエンジンにより駆動されるドライブシャフト３と共に回転する回転体１１に、該回転体１１の回転に伴って該回転体の外周側から取り入れた潤滑オイルをドライブシャフト３側に流動させるオイル導入流路３０を形成し、オイル導入流路３０を通してドライブシャフト３側に流動した潤滑オイルをベアリング５内に導入することにより、ベアリング５内の潤滑油を冷却してベアリング５の潤滑状態を適正な状態に保つ。【選択図】 図３