| 摘要 |
A driving tool (10) including a driver (33) configured to drive out a fastener, a piston (32) to which the driver is connected, a cylinder (31) in which the piston is disposed so as to be reciprocated, a head valve (34) which is slidably mounted to an outer circumferential side of the cylinder and controls a flow of compressed air into the cylinder, and a seal portion (35a) which is provided to face an opening edge of the head valve. The seal portion includes a lip portion (35b) protruding along an outer circumferential surface of the head valve. |
