| 摘要 |
PROBLEM TO BE SOLVED: To facilitate the attaching and detaching work of an oil feed cap, and ensure to secure the tightened condition of the oil feed cap. SOLUTION: A cartridge tank is provided with a tank main body 11, an oil feed opening 13, a metal cap 14 blocking the oil feed opening 13 by the engagement with a screw part 13a formed in the outer periphery of the oil feed opening 13, the first gear joint 17 provided to cover the metal cap 14, the second gear joint 18 provided to engage with the first gear joint 17 by the predetermined spring pressure, a spring 19 and an oil feed cap flange 20 holding one side of this spring 19 and rotating the metal cap 14, and the first gear joint 17 and the metal cap 14 have such a constitution that they have idle rotation by the portion of a preset angle range. |
