A pneumatic nailer is provided comprising a working piston which is connected to a driving plunger for driving in a fastening means and which is subject to compressed air when a driving-in process is triggered, The nailer also includes a triggering device for initiating a driving-in process, a safety device configured to switch the nailer from a trigger-ready state to a locked state a control valve to control the pressure inside of the control chamber which includes a control valve member which is moveable along an adjustment path and a damper coupled to the control valve member.

The disclosure discloses a driving machine includes a trigger, a first switch turned on or off by an operation of the trigger, a push lever that moves in response to an operation of pressing an ejection port of a fastener against a driven material, and a second switch turned on or off by movement of the push lever. The driving machine drives the fastener when the first switch and the second switch are both in the ON state. The trigger includes a switching mechanism to switch between a single-shot driving mode and a continuous-shot driving mode.

Provided is a nail gun, including: a housing, a firing pin, a prime mover, a first cylinder, a first piston, a second cylinder, a second piston, and a locking member. A first chamber is defined in the first cylinder, the first piston is disposed in the first chamber and is fixedly connected to the firing pin, the second cylinder is formed with the second chamber that is in communication with the first chamber. The second piston is disposed in the second chamber and operative to be driven by the prime mover to perform a reciprocating motion between a first position and the second position along a first straight line. The locking member is configured for locking or releasing the first piston in the first chamber, and the first piston is formed or connected with: a locking portion configured for engaging with the locking member. When the second piston is at the first position, the locking member is operative to be engaged with the locking portion to lock the first piston within the first chamber, and when the second piston is at the second position, the prime mover is operative to drive the locking member out of engagement with the locking portion to release the first piston within the first chamber.

Provided a driving tool capable of reducing power supplied to an actuator. It includes: an accumulator 21 accommodating a gas; a pressure chamber to which the gas is supplied from the accumulator 21; a striking part operating by pressure in the pressure chamber; a trigger valve 45 having an initial state of shutting off the accumulator 21 and the pressure chamber, and an operating state of connecting the accumulator 21 and the pressure chamber; a mode switching mechanism having a connection mode of transmitting to the trigger valve 45 an operating force applied to the operating member, and a shut-off mode of preventing the operating force applied to the operating member being transmitted to the trigger valve 45; a valve 75 having, when the mode switching mechanism is in the shut-off mode, a supply state of supplying a gas in the accumulator 21 to the trigger valve 45 to make the trigger valve 45 an operating state, and a discharge state of discharging the gas supplied to the trigger valve 45 to make the trigger valve 45 an initial state; and a solenoid 76 switching the supply state and the discharge state of the valve 75.

A pneumatic tool includes an air chamber; and a pressure adjusting mechanism which adjusts a pressure of a compressed air in the air chamber. The pressure adjusting mechanism includes a valve body which opens and closes a flow path that communicates the air intake and the air chamber; an elastic body which exerts an urging force to the valve body; a support part which supports an end of the elastic body; a pressure receiving member which receives air pressure in the air chamber and presses the elastic body in a direction of closing the flow path; and a load reducing mechanism capable of switching the urging force of the elastic body acting on the valve body between a normal state and a load reduction state in which the urging force smaller than the normal state is exerted.

A clinch fastener mechanism including a pivoting base configured to be pivotally connected to a pneumatic fastener tool. The clinch fastener mechanism further includes a clinch arm pivotally connected to the pivoting base at a proximal end of the clinch arm; and a clinch plate disposed on a distal end of the clinch arm, wherein tool operates within three pressure zones. The system may also include a two-valve system which works by moving pressure throughout three specific zones. The first pressure zone has pressure introduced to it by the user attaching the tool to a pressure delivery source, such as a compressor, or other source. The second pressure zone may be used to operate the clinch arm or a safety mechanism. Mechanical safeties may be configured to prevent accidental or double firing of the tool.

A driving tool capable of avoiding blank shot after a predetermined time has elapsed when performing a bump firing and capable of smoothly performing the bump firing is provided. The driving tool includes: an accumulator chamber which accumulates compressed air; a nose section provided on a housing; a cylinder; a trigger; and a push lever provided in the nose section, and when the trigger and the push lever are operated, the compressed air is supplied into the cylinder. The driving tool further includes: a delay valve which prevents the compressed air from being supplied into the cylinder when the push lever is not operated within a predetermined time after the trigger is operated: and a switching valve which supplies the compressed air of the accumulator chamber to the delay valve when the trigger is operated, and discharges the compressed air supplied to the delay valve to an outside of the housing when the push lever is operated within the predetermined time.

A driving tool for driving fasteners into a workpiece and operable in a single shot mode and in a bump fire mode, wherein the driving tool includes a resetting assembly including a control volume, wherein the resetting assembly is activatable in the bump fire mode by movement of a piston during each fastener driving-in cycle so that a fluid path from a cylinder to the control volume facilitates an increase in pressure to the control volume, and wherein responsive to a pressure in the control volume falling below a limit value due to venting of air from the control volume, the resetting assembly is operable to prevent actuation of a workpiece contact element from causing a valve piston to move to an actuation position until a trigger lever is released.

A compressed air nailer comprises a working piston connected to a driving tappet and configured to drive in a fastener and a triggering apparatus. The triggering apparatus comprises a manually actuable trigger, a placing sensor, and a force transmission element configured to interact with the manually actuable trigger and the placing sensor to actuate a control valve and trigger the driving process when the manually actuable trigger and the placing sensor are actuated together. The compressed air nailer is configured to continuously drive in fasteners in an automatic operating mode when the manually actuable trigger and the placing sensor are permanently actuated, and wherein displacing the placing sensor from the second position into the first position does not actuate the control valve when the manually actuable trigger is in an actuated position when the placing sensor is displaced.

A pneumatic tool includes a drive part configured to be driven by compressed air, a control valve configured to switch the presence or absence of operation of the drive part, and a timer part configured to switch the presence or absence of operation of the control valve after a lapse of a predetermined time. The timer part includes a timer piston configured to move in one direction, a timer piston cylinder configured to support the timer piston such that the timer piston can slide, and an on-off valve part configured to switch the presence or absence of operation of the control valve in conjunction with the timer piston. The on-off valve part includes a shaft portion configured to move in conjunction with the timer piston, and compressed air flowing into the on-off valve part presses the shaft portion in the one direction.