A driver capable of suppressing increase in a load torque of a motor when a striking mechanism is moved by the torque of the motor against a force of a first moving mechanism is provided. The driver includes a striking mechanism 12 movable in a first direction B1 and a second direction B2 opposite to the first direction B1 and a first moving mechanism configured to move the striking mechanism 12 in the first direction B1 to strike a fastener, and the driver further includes a motor, a second moving mechanism 45 rotated by the torque of the motor and configured to move the striking mechanism 12 in the second direction against a force of the first moving mechanism, and torque suppression mechanisms 45A to 45H configured to suppress increase in the torque of the motor when the striking mechanism 12 is moved in the second direction B2.

A powered fastener driver includes a driver blade movable from a top-dead-center position to a bottom-dead-center position for driving a fastener into a workpiece, a drive unit for providing torque to move the driver blade toward the top-dead-center position, and a rotary lifter engageable with the driver blade. The rotary lifter having a body and a drive pin coupled to the body. A roller is rotatably coupled to the drive pin and includes a non-cylindrical outer peripheral surface defining a plurality of engagement sections. A tooth of the driver blade is configured to engage one of the engagement sections when moving the driver blade from the bottom-dead-center position toward the top-dead-center position.

Various embodiments of the present disclosure provide powered fastener driving tools and clean lubricants for powered fastener driving tools that reduce contaminant, residue, and deposit buildup or accumulation in the powered fastener driving tools, and thus reduce necessary maintenance for such powered fastener driving tools (or increases the time intervals between such necessary maintenance of powered fastener driving tools).

A driving device includes an operable striking unit, a piston upper chamber configured to operate the striking unit by gas pressure, a housing, a head cap provided in the housing, a passage provided in the head cap, and an exhaust valve operably provided in the housing and configured to open and close the passage. The exhaust valve includes a contact portion and a non-contact portion, the contact portion comes into and out of contact with the head cap on an outer side of the passage in a radial direction of the passage, the non-contact portion is provided on an inner side of the contact portion in the radial direction of the passage, and the non-contact portion is provided at a position separated from the head cap in a state where die contact portion is in contact with the head cap.

A powered fastener driver includes a magazine containing fasteners therein, a drive blade movable in a reciprocating manner to discharge a fastener from the magazine for each drive cycle of the drive blade, a first trigger operable to initiate a drive cycle of the drive blade, and a second trigger movable between a first position, in which the first trigger is inhibited from moving to initiate the drive cycle, and a second position, in which the first trigger is movable to initiate the drive cycle.

The present invention discloses a hybrid nail gun, which comprises a power component and a drive component, wherein the power component is driven by the drive component, and the drive component comprises at least a gas driven device and an electric driven device. The present invention may be used as a pneumatic nail gun when it can be connected to a gas source. The present invention may use a power source to drive the power component to complete a nailing action when it is impossible or inconvenient to connect a gas source. The present invention can flexibly adapt to different work scenarios without the need to change different types of nail guns. Therefore, the work efficiency is improved and the cost is reduced.

A mechanical timer mechanism can include a driven gear mounted to a rotary damper and a drive gear operably coupled to the driven gear. In bump mode, movement of an auxiliary trigger to its actuating position can initially move the drive gear from a home position into its wind-up position. Thereafter, a contact trip can continue to move the drive gear to its wind-up position and an actuator of a principal trigger to its actuating position each time the contact trip is actuated, unless the timing mechanism has timed-out between actuations. In sequential mode, the drive gear can be moved into a timer lock-out position which holds the contact trip in a bypass position in which the contact trip will not engage the actuator of the auxiliary trigger unless the auxiliary trigger is moved to its actuating position before actuation of the contact trip.

Realized is a driving device capable of controlling driving timing of a blade and driving timing of a feeder independently. The driving device of the present invention has a housing having an injection path, a blade hitting a nail supplied to the injection path, an electric motor, a controller controlling drive of the electric motor, a magazine accommodating connected nails, and a supply, mechanism sequentially supplying the connected nails, which are accommodated in the magazine, to the injection path. The supply mechanism has a reciprocable feeder backward and forward, an energizing member energizing the feeder forward, and a stopper holding a position of the backward moved feeder against energization of the energizing member. Then, holding the position of the feeder by the stopper is released based on control of the controller.

A driver capable of suppressing an increase in a load of a bumper is provided. The driver includes a striking portion provided movably and configured to move to strike a fastener; a bumper configured to be in contact with the striking portion to restrict a range of movement of the striking portion; and a housing configured to support the bumper, the driver further including a load suppressing portion configured to suppress an increase in a load of the bumper based on the load of the bumper detected by a load detection portion or number of operations of the striking portion within a predetermined time.

An electric nail gun includes a muzzle seat, a safety component being movable relative to the muzzle seat, and a cylinder unit connected to the muzzle seat and including a striking cylinder, at least one storage chamber that is adapted for storing pressurized air, and a sealing cap that is coupled to the striking cylinder and the at least one storage chamber. The electric nail gun further includes an air valve disposed in the cylinder unit and being directly and solely movable by the safety component from a closed position to an open position to allow the pressurized air to flow into the striking cylinder, and a nail-striking unit driven movably by the pressurized air for striking a nail when the air valve is at the open position.