Patent ID: 6863158

Claim:
Oil filling structure of pneumatic tool, comprising: a main body; a chamber formed in the main body; a pneumatic cylinder disposed in the main body, a rotor being disposed in the cylinder; an airflow way formed in the main body for high pressure air to flow into the main body, the flow way communicating with the chamber and the cylinder, whereby the high pressure air can flow into the cylinder to drive and rotate the rotor and be exhausted from the cylinder; and an air intake switch including a valve body and a controlling member connected with the valve body, the valve body being airtight movably disposed in the chamber, the controlling member being positioned on outer side of the chamber and manually operable, whereby the controlling member can drive the valve body to move between a close position and an open position so as to control closing/opening of the flow way; said oil filling structure being characterized in that further comprising: an oil filling hole disposed in the valve body, an outer end of the oil filling hole communicating with outer side for filling in a lubricant, an inner end of the oil filling hole passing to a circumference of the valve body, when the valve body is switched to the close position, the inner end of the oil filling hole communicates with the flow way, while when the valve body is switched to the open position, the inner end of the oil filling hole does not communicate with the flow way.