Abstract: A heat dissipating device is adapted to be mounted in an electric nail gun that includes a flywheel being rotatable about an axis, a first pulley being spaced apart from the flywheel, and a transmission belt being trained on the first pulley. The heat dissipating device includes a second pulley, a weight disc and a heat dissipating member that are adapted to be connected coaxially and co-rotatably to the flywheel. The second pulley is adapted to be trained by the transmission belt. The heat dissipating member includes a plurality of fan blades extending in a direction of the axis such that, during co-rotation of the flywheel, the weight disc and the heat dissipating member, the fan blades create a flow of air for cooling.

Abstract: A striking device includes a swing arm unit, an impact member and two restoring units. Each of the restoring units includes a stationary seat removably connected to the swing arm unit, a moving seat removably and co-movably connected to the impact member, first and second coupling sets, and a resilient member interconnecting the stationary seat and the moving seat to bias the moving seat toward the stationary seat. For each of the restoring units, two portions of the first coupling set are formed respectively on the stationary seat and the swing arm unit and coupled removably with each other, and two portions of the second coupling set are formed respectively on the moving seat and the impact member and coupled removably with each other.

Abstract: A dustproof magazine to be mounted in a nail gun including a muzzle unit includes a magazine body, a nail-pressing member, and a scroll spring connected therebetween. The magazine body includes spaced-apart first and second rail walls extending transverse to the muzzle unit, and disposed respectively distal from and adjacent to the muzzle unit. The nail-pressing member is mounted movably along and between the first and second rail walls, and includes a main body and a scraper set extending therefrom. Movement of the nail-pressing member away from the muzzle unit drives the scroll spring to resiliently convert from a winding state into an unwinding state, where a strip portion of the scroll spring unwinds and extends along the second rail wall. The scraper set is in contact with the strip portion during the movement of the nail-pressing member for scrapping foreign matters off the strip portion.

Abstract: A dustproof device for use in an electric nail gun includes a dustproof plate and two fastening members. The electric nail gun includes a muzzle unit used for discharging nails and a machine body unit connected to the muzzle unit and operable to strike the nails. The dustproof plate has a mounting surface facing the machine body unit, an exterior surface that is opposite to the mounting surface and prevents foreign matters from entering the machine body unit, and a through hole that extends through the mounting surface and the exterior surface, that permits the muzzle unit to extend fittingly therethrough, and that is complementary in shape with a contour of a cross section of the muzzle unit. The two fastening members extend from the mounting surface and are detachably connected to the machine body unit to secure the dustproof plate between the machine body unit and the muzzle unit.

Abstract: An electric nail gun includes a cylinder unit, a nail-striking unit and a valve unit. The cylinder unit includes a striking cylinder that surrounds a first axis and that defines a cylinder chamber, and a cylinder lid that cooperates with the striking cylinder to define a gas storing chamber communicating with the cylinder chamber. The cylinder lid includes a passage that communicates with the gas storing chamber, and that extends along a second axis. The nail-striking unit includes a piston assembly that is adapted for striking a nail. The valve unit includes a valve assembly that is accommodated in the passage. The valve assembly is operable to convert between a first state, in which the gas is allowed to flow between the gas storing chamber and an external environment through the passage, and a second state, in which the gas is refrained from flowing through the passage.

Abstract: An electric nail gun includes a cylinder unit, a valve, an actuating member, a safety assembly and an adjusting assembly. The cylinder unit defines a cylinder space and a gas space. The valve is disposed between the cylinder space and the gas space, and is movable among a closed position, in which the valve closes the cylinder space, and a plurality of open positions. The safety assembly has a pressing portion that is adapted to be pressed and moved by an object, and an actuating portion that cooperates with the actuating member to define a first actuating distance in a first direction therebetween. When the pressing portion is moved by the object, the actuating member is urged to move by the actuating portion such that the valve moves from the closed position to one of the open positions. The adjusting assembly is operable to adjust the first actuating distance.

Abstract: An electric sander motor includes a motor main body (100), a power axial shaft (210) and a sleeve (220). The motor main body (100) includes a rotor (110) and a stator (120) surrounding the rotor (110). The power axial shaft (210) includes an axial hole (211) extending along a central axis of the power axial shaft (210). The sleeve (220) includes one open end and another closed end extended outward to form an eccentric axial shaft (221) penetrating through the axial hole (211). A central axis of the eccentric axial shaft (211) is parallel with a central axis of the sleeve (220) and spaced apart therefrom. The power axial shaft (210) penetrates through the rotor (110), and the sleeve (220) is outside the motor main body (100). The assembly is facilitated by assembling the power axial shaft (210) and the sleeve (220) onto the motor main body (100) sequentially.

Abstract: A heat dissipating device is adapted to be mounted in an electric nail gun that includes a flywheel being rotatable about an axis, a first pulley being spaced apart from the flywheel, and a transmission belt being trained on the first pulley. The heat dissipating device includes a second pulley, a weight disc and a heat dissipating member that are adapted to be connected coaxially and co-rotatably to the flywheel. The second pulley is adapted to be trained by the transmission belt. The heat dissipating member includes a plurality of fan blades extending in a direction of the axis such that, during co-rotation of the flywheel, the weight disc and the heat dissipating member, the fan blades create a flow of air for cooling.

Abstract: A striking device includes a swing arm unit, an impact member and two restoring units. Each of the restoring units includes a stationary seat removably connected to the swing arm unit, a moving seat removably and co-movably connected to the impact member, first and second coupling sets, and a resilient member interconnecting the stationary seat and the moving seat to bias the moving seat toward the stationary seat. For each of the restoring units, two portions of the first coupling set are formed respectively on the stationary seat and the swing arm unit and coupled removably with each other, and two portions of the second coupling set are formed respectively on the moving seat and the impact member and coupled removably with each other.

Abstract: An electric sander motor includes a motor main body (100), a power axial shaft (210) and a sleeve (220). The motor main body (100) includes a rotor (110) and a stator (120) surrounding the rotor (110). The power axial shaft (210) includes an axial hole (211) extending along a central axis of the power axial shaft (210). The sleeve (220) includes one open end and another closed end extended outward to form an eccentric axial shaft (221) penetrating through the axial hole (211). A central axis of the eccentric axial shaft (211) is parallel with a central axis of the sleeve (220) and spaced apart therefrom. The power axial shaft (210) penetrates through the rotor (110), and the sleeve (220) is outside the motor main body (100). The assembly is facilitated by assembling the power axial shaft (210) and the sleeve (220) onto the motor main body (100) sequentially.

Abstract: A driving device is adapted for use in an electric nail gun. The electric nail gun includes a supporting frame. The driving device includes a swing arm unit, a control unit and a driving unit. The swing arm unit is swingable between a standby position and a shooting position. The control unit includes a control member having a driven end portion, and an abutting end portion opposite to the driven end portion. The driving unit is for driving the driven end portion of the control member to rotate between a driving position and a non-driving position, and includes a control-member biasing resilient member disposed between the driven end portion of the control member and the supporting frame.

Abstract: A driving device is adapted for use in an electric nail gun. The electric nail gun includes a supporting frame. The driving device includes a swing arm unit, a control unit and a driving unit. The swing arm unit is swingable between a standby position and a shooting position. The control unit includes a control member having a driven end portion, and an abutting end portion opposite to the driven end portion. The driving unit is for driving the driven end portion of the control member to rotate between a driving position and a non-driving position, and includes a control-member biasing resilient member disposed between the driven end portion of the control member and the supporting frame.

Abstract: A two-switch device is used for an electric nail gun. The electric nail gun includes a safety member movable to press against an article to thereby move in the gun body, a kinetic power unit for generating kinetic energy, an impact unit for outputting kinetic energy to perform a nail-striking operation, and a transmission unit for transmitting the kinetic energy. The two-switch device includes a first electrical control unit controlled by a trigger and the safety member for driving the kinetic power unit, and a second electrical control unit controlled by an inner plate for driving the transmission unit. By controlling actuation order of the safety member and the trigger, the electric nail gun can be changed between a single shot mode and a continuous shooting mode.

Abstract: An adjusting device for an electric nail gun includes a detecting unit, a sensing unit and an electric control unit. The detecting unit includes a detecting rod for being pushed by a nail received in the electric nail gun to be rotated. The sensing unit is for sensing the position of the detecting rod and generating a corresponding sensing signal. The electric control unit is electrically connected to a driving unit of the electric nail gun and the sensing unit, and switches the driving unit to a state corresponding to the sensing signal.

Abstract: An electric nail gun includes a main frame, a swing arm pivoted to the main frame, an impact member mounted movably to the swing arm, and a restoring mechanism including a sliding member, a first resilient member and a second resilient member. The sliding member is mounted movably to the impact member. The first resilient member is configured such that, when the impact member is driven to move away from a rear end of the swing arm, the sliding member is drawn to move toward a rear end of the impact member by the first resilient member, and the length of the linear deformation of the first resilient member is smaller than the travel distance of the impact member. The second resilient member biases the sliding member away from the rear end of the impact member.

Abstract: In an electric power tool, a flywheel can be driven by a driving unit to rotate about a wheel axis to thereby impart kinetic energy to a tool body through a force transmitting portion of the flywheel. A ventilating unit is mounted to rotate with the flywheel about the wheel axis. When the flywheel is driven to rotate, cooling air is generated by rotation of the ventilating unit.

Abstract: An oscillation reducing suspension device for a fan motor of a combustion-powered tool includes a rigid axial-play setting unit mounted on an upper major surface of a cylinder head, and having upper and lower limit defining members that are spaced apart from each other by an axial play route, a suspending mount configured to keep the fan motor oriented in a rotary axis, and having a lug which extends radially into the axial play route to divide the axial play route into proximate and distal regions, and an elastomeric damper unit having upper and lower damping members respectively disposed in the distal and proximate regions. By virtue of the rigid mount supporting the fan motor, and the resilient damper unit coupling the mount and the cylinder head, the fan motor is firmly secured to the cylinder head, and axial oscillation of the fan motor is reduced.

Abstract: A combustion powered nail gun includes a combustion sleeve moveable between a sealed position and an open position; a trigger switch having a first hook portion; a safety lever pivotally mounted in a housing and provided with a second hook biasable to be engaged with the first hook portion; and a restriction member connected to and moveable along with the combustion sleeve in a way that when the combustion sleeve is in the open position, the restriction member is stopped at the safety lever in which the second hook portion is engaged with the first hook portion so as to lock the trigger switch, and when the combustion sleeve is in the sealed position, the restriction member is spaced away from the safety lever to enable the second hook portion to be biasable away from the first hook portion so as to unlock the trigger switch.

Abstract: A two-switch device is used for an electric nail gun. The electric nail gun includes a safety member movable to press against an article to thereby move in the gun body, a kinetic power unit for generating kinetic energy, an impact unit for outputting kinetic energy to perform a nail-striking operation, and a transmission unit for transmitting the kinetic energy. The two-switch device includes a first electrical control unit controlled by a trigger and the safety member for driving the kinetic power unit, and a second electrical control unit controlled by an inner plate for driving the transmission unit. By controlling actuation order of the safety member and the trigger, the electric nail gun can be changed between a single shot mode and a continuous shooting mode.

Abstract: An oscillation reducing suspension device for a fan motor of a combustion-powered tool includes a rigid axial-play setting unit mounted on an upper major surface of a cylinder head, and having upper and lower limit defining members that are spaced apart from each other by an axial play route, a suspending mount configured to keep the fan motor oriented in a rotary axis, and having a lug which extends radially into the axial play route to divide the axial play route into proximate and distal regions, and an elastomeric damper unit having upper and lower damping members respectively disposed in the distal and proximate regions. By virtue of the rigid mount supporting the fan motor, and the resilient damper unit coupling the mount and the cylinder head, the fan motor is firmly secured to the cylinder head, and axial oscillation of the fan motor is reduced.