| 摘要 |
A pneumatic tool includes: a body; a pneumatic driving unit disposed in the body for performing pneumatically a fastener-driving operation; a trigger valve unit disposed on the body and adapted for controlling flow of air into the pneumatic driving unit and out of the body; and a passage unit formed in the body and including an air storing chamber adapted for guiding flow of air into the trigger valve unit, a bidirectional passage for intercommunicating the trigger valve unit and the pneumatic driving unit, an exhaust passage communicated with the trigger valve unit, and an expansion passage adapted for intercommunicating the exhaust passage and the atmosphere and extending along a peripheral portion of the body as to permit flow of air from the exhaust passage into the atmosphere therethrough. |
