VARIABLE VALVE GEAR OF INTERNAL COMBUSTION ENGINE AND ASSEMBLY METHOD OF VARIABLE VALVE GEAR

• Main Author: TASAKA HIDENORI
• Format: Patent
• Language: English; Japanese
• Published: 04.04.2019
• Subjects: BLASTING; CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES; ENGINE PLANTS IN GENERAL; HEATING; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

To provide a variable valve gear of an internal combustion engine which can achieve improvement of axis alignment between an inner cam shaft and a rotor to improve assemblability.SOLUTION: A variable valve gear of an internal combustion engine includes: an inner cam shaft 6 which is inserted into an outer cam shaft 5 while enabling relative rotation; a first shaft part 5a extending from one end part of the outer cam shaft; a housing 2 which has a first insertion hole 20 into which the first shaft part is inserted and which is fixed to the outer cam shaft; and a second shaft part 6a which extends from one end part of the inner cam shaft and protrudes from the first shaft part in a rotation axis direction. A rotor part 17 which is disposed within the housing while enabling relative rotation and is fixed to the second shaft part has a second insertion hole 21 into which the second shaft part is inserted before the first shaft part is inserted into the first insertion hole.SELECTED DRAWING: Figure 1 【課題】インナーカムシャフトとロータとの軸芯出し性が良好になって、組立性の改善を図ることができる。【解決手段】アウターカムシャフト５の内部に相対回転可能に挿通されたインナーカムシャフト６と、アウターカムシャフトの一端部から延びる第１シャフト部５ａと、第１シャフト部が挿入される第１挿入孔２０を有し、アウターカムシャフトに固定されるハウジング２と、インナーカムシャフトの一端部から延びて、第１シャフト部から回転軸方向へ突出した第２シャフト部６ａと、を備え、ハウジングの内部に相対回転可能に配置されて第２シャフト部に固定されるロータ部１７は、第１シャフト部が第１挿入孔に挿入される前の状態で、第２シャフト部が挿入される第２挿入孔２１を有している。【選択図】図１