Abstract: An electric nail gun includes a gun body, a muzzle unit connected to the gun body, and defining a nail-striking channel, a magazine unit, a control unit and a safety unit. The magazine unit includes a nail magazine adapted for accommodating a plurality of nails and a magazine pusher movably mounted in the nail magazine, adapted for pushing the nails sequentially into the nail-striking channel, and having a protrusion. The control unit includes a trigger switch for outputting a start signal, a safety switch for outputting a safety signal, and a controller for initiating a striking cycle upon receipt of the start signal and the safety signal. The safety unit is movably mounted between the gun body and the muzzle unit, and includes a first safety member and a second safety member disposed between the safety switch and the first safety member, and movable between linked and delinked positions.

Abstract: A retrieving device includes at least one first position member that is adapted to be connected to a swing arm unit, at least one second position member that is adapted to be connected to a nail-striking unit, that is sleeved on the at least one first position member, and that is slidable relative to the at least one first position member in a nail-striking direction and a retrieving direction opposite to the nail-striking direction, and at least one resilient member. The at least one second position member is constantly in contact with the at least one first position member. The at least one resilient member is operable for generating a resilient force to move the at least one second position member in the retrieving direction so as to retrieve the nail-striking unit in the retrieving direction.

Abstract: A switch control device and an operation method thereof are provided. The switch control device comprises a trigger switch, a self-maintaining circuit, and a control unit. When the trigger switch is pressed, the control unit is operated to stop the self-maintaining circuit from supplying power, thereby stabilizing the power source of the control unit.

Abstract: A nail-striking device includes an actuator member and a nail-striking member. The actuator member is adapted to be in contact with an actuation device to receive kinetic energy along a second axis perpendicular to a first axis, thereby being driven by the kinetic energy to move along the first axis relative to a barrel. The nail-striking member is adapted for striking a nail along the first axis when the nail is conveyed along a first imaginary line into the barrel. The nail-striking member has a cross section that extends in a direction of a third axis and a direction of the second axis and that is elongated along a reference line perpendicular to the first imaginary line. The third axis is perpendicular to the first axis and the second axis. The reference line is inclined at a first angle to the third axis. The first angle ranges between 10-30 degrees.

Abstract: A cap nailer includes a machine body, a muzzle, a magazine, a cap feeding device, and a nail striking device. The muzzle is connected to the machine body and extends along a first axis. The magazine is connected to the muzzle, and extends in an extending direction of a second axis. The cap feeding device includes a cap cartridge that is juxtaposed with the magazine, and a cap rail that is connected to the cap cartridge and that has a third axis. The cap cartridge is adapted for accommodating a plurality of caps. The third axis and the first axis define an intersection point that is spaced apart from the muzzle. The cap rail is adapted for guiding the caps to move to the intersection point, and cooperates with the magazine to define a first included angle therebetween. The first included angle ranges from 15 degrees to 25 degrees.

Abstract: A shock-absorbing housing for an electric tool includes a shell unit and a shock-absorption unit connected to the shell unit. The shell unit includes limiting portions each having a first hole-defining section that defines a first hole, and a second hole-defining section that defines a second hole. The first hole has a diameter greater than that of the second hole. The shock-absorption unit includes elastic bodies. Each of the elastic bodies includes a first compressive section that extends through the first hole and that is spaced apart from the first hole-defining section, and a second compressive section that is opposite to the first compressive section and that extends through the second hole. The first compressive section has a protruding portion that protrudes outwardly from the first hole-defining section, and that is adapted for abutting against a trigger device of the electric tool.

Abstract: An electric tool power control apparatus includes a microcontroller, a power converter, a voltage detector, a trigger switch, a first transistor, a second transistor, a third transistor, and a diode. When the trigger switch is turned on, the voltage detector detects a battery voltage, and the voltage detector performs a delay time and keep the third transistor turned off within the delay time, and the power converter receives the battery voltage and converts the battery voltage into a driving voltage and transmits the driving voltage to the microcontroller to drive and wake up the microcontroller, and after the microcontroller is awakened, the microcontroller turns on the first transistor to turn on the second transistor to enter a self-holding state, and the voltage detector detects a ground through the diode and the first transistor within the delay time so that the voltage detector stops detecting the battery voltage.

Abstract: A lift assembly for use in an electric nail gun includes a wheel unit, a wheel axle unit, and a buffer unit. The wheel unit is rotatable about an axis, and includes a plurality of roller members arranged along a circumference surrounding the axis, and an inner action surface. The wheel axle unit is rotatable about the axis, is detachably sleeved on a portion of the wheel unit, and has an outer action surface movable along the circumference, spaced apart from the wheel unit, and operable to exert a force on the inner action surface to drive rotation of the wheel unit when the wheel axle unit is energized. The buffer unit includes a buffer member disposed between the inner action surface and the outer action surface along the circumference.

Abstract: A powered tool for repairing a tire includes an electric power unit, a control unit, a trigger unit, and a speed switching unit. The electric power unit includes a driven shaft adapted to output kinetic energy and a motor driving the driven shaft to rotate. The control unit includes an actuating switch operable to output an actuated signal associated with a movement distance of an actuator and a processing module configured to control rotation of the rotating member at one of first and second rotational speeds according to the actuated signal. The speed switching unit is operable to move between first and second rotational speed positions such that the actuator travels first or second distances as being pushed by the trigger unit.

Abstract: A method of controlling a power tool is implemented by a controller of the power tool. The method includes: receiving a current value of a motor of the power tool, and obtaining a current weight value based on the current value and a predetermined number of weight levels; receiving a plurality of acceleration signals from an accelerometer of the power tool; obtaining an angular acceleration value based on the acceleration signals; obtaining a deciding value based on the current weight value and the angular acceleration value; and in response to a predetermined condition being met, stopping operation of the motor. The predetermined condition includes the controller determining that the deciding value is greater than a threshold value, and that the power tool is in an operating mode.

Abstract: A nailer assembly includes a housing defining a drive section at a forward portion of the nailer assembly, and a grip section at an upper portion of the nailer assembly. A fastener magazine is located beneath the grip section and includes a feed portion proximate the drive section and a distal portion located distally from the drive section. A sacrificial protective support structure is positioned beneath the distal portion of the fastener magazine.

Abstract: A method of controlling a rotational speed of an electric tool is provided. The electric tool includes a battery, a battery voltage detection circuit, a motor unit, and a controller. The controller stores at least one regression equation of duty ratio on voltage, and detects a voltage of the battery through the battery voltage detection circuit. The controller obtains a duty ratio for a control signal by substituting the voltage of the battery into the at least one regression equation, and outputs the control signal with the duty ratio obtained from the at least one regression equation to the motor unit for controlling operation of the motor unit.

Abstract: A shock-absorbing housing for an electric tool includes a shell unit and a shock-absorption unit connected to the shell unit. The shell unit includes limiting portions each having a first hole-defining section that defines a first hole, and a second hole-defining section that defines a second hole. The first hole has a diameter greater than that of the second hole. The shock-absorption unit includes elastic bodies. Each of the elastic bodies includes a first compressive section that extends through the first hole and that is spaced apart from the first hole-defining section, and a second compressive section that is opposite to the first compressive section and that extends through the second hole. The first compressive section has a protruding portion that protrudes outwardly from the first hole-defining section, and that is adapted for abutting against a trigger device of the electric tool.

Abstract: An electric nail gun includes a frame unit, a flywheel that is rotatably connected to the frame unit, a swing arm unit, an impact member, a driving member that is swingably connected to the frame unit, and a strike prevention member that is swingably connected to the frame unit. The swing arm unit is operable to urge the impact member to be in contact with the flywheel. The impact member is urged by rotation of the flywheel to strike a nail. The driving member is operable to swing relative to the swing arm unit between an initial position and a trigger position, and drives the swing arm unit to move toward the flywheel when the driving member swings from the initial position to the trigger position. The strike prevention member is driven by the driving member to swing relative to the impact member and the driving member.

Abstract: A safety device is adapted for an electric nail gun that includes a body, a muzzle device, and a safety switch. The safety device includes a first safety member, a second safety member, and a bias unit. The first safety member is adapted to be movably mounted to the muzzle device, and includes a connection portion. The second safety member includes a limitation portion and a contact portion. The limitation portion is adapted for cooperating with the body to define a predetermined stroke and is spaced apart from the connection portion of the first safety member by a predetermined distance. The bias unit resiliently biases the first safety member and the second safety member away from the body. The first safety member is operable to move relative to the second safety member by an adjustment stroke that is shorter than the predetermined distance.

Abstract: A lift assembly for use in an electric nail gun includes a wheel unit, a wheel axle unit, and a buffer unit. The wheel unit is rotatable about an axis, and includes a plurality of roller members arranged along a circumference surrounding the axis, and an inner action surface. The wheel axle unit is rotatable about the axis, is detachably sleeved on a portion of the wheel unit, and has an outer action surface movable along the circumference, spaced apart from the wheel unit, and operable to exert a force on the inner action surface to drive rotation of the wheel unit when the wheel axle unit is energized. The buffer unit includes a buffer member disposed between the inner action surface and the outer action surface along the circumference.

Abstract: An electric ratchet wrench includes a control unit, a housing unit, and a driving unit. The control unit stores a plurality of parameter sets that correspond respectively to a plurality of operating modes related respectively to different sets of a torque and a rotational speed. The housing unit includes a housing, a trigger module configured to output a trigger signal when the trigger module is operated, and an operation module configured to output a mode signal for switching between the operating modes when the operation module is operated. The control unit is configured to, in response to receipt of the mode signal, set one of the operating modes as a current operating mode, and, in response to receipt of the trigger signal, output a control signal for controlling operation of a motor according to one of the parameter sets that corresponds to the current operating mode.

Abstract: A restriction device is adapted to be mounted to a nail gun that has a barrel device and that accommodates a plurality of nails. Each nail has a nail head and a nail shaft. The restriction device includes a restriction member that has first and second obstruction portions. The restriction member is adapted to be movable between an obstruction position and a release position. When the restriction member is in the obstruction position, the first obstruction portion is adapted to be slotted between the nail shaft of one of the plurality of nails and the nail shaft of an adjacent one of the plurality of nails, and the second obstruction portion is adapted to abut against the nail head of the one of the plurality of nails or to abut the nail shaft of the adjacent one of the plurality of nails against the barrel device.

Abstract: A powered tool for repairing a tire includes an electric power unit, a control unit, a trigger unit, and a speed switching unit. The electric power unit includes a driven shaft adapted to output kinetic energy and a motor driving the driven shaft to rotate. The control unit includes an actuating switch operable to output an actuated signal associated with a movement distance of an actuator and a processing module configured to control rotation of the rotating member at one of first and second rotational speeds according to the actuated signal. The speed switching unit is operable to move between first and second rotational speed positions such that the actuator travels first or second distances as being pushed by the trigger unit.

Abstract: A noise reduction device includes a shaft member being positioned, a stator unit including a coil assembly surrounding the shaft member, a rotor unit, and a noise reducing unit. The rotor unit includes a magnetic unit disposed between the shaft member and the coil assembly and driven by the coil assembly to rotate, and a flywheel set co-rotatably connected to the magnetic unit, and is adapted for contacting a transmission member movable relative to the flywheel set and for driving movement of the transmission member during rotation of the flywheel set. The noise reducing unit surrounds the shaft member, is mounted to the flywheel set, and is for absorbing energy of sound waves generated when the flywheel set contacts the transmission member.