Abstract: A battery device includes a battery unit, a temperature port, a temperature sensitive component, a switch component and a battery management unit. The temperature sensitive component senses a temperature of the battery unit, and provides a temperature indication signal at the temperature port. The switch component is electrically connected to the temperature sensitive component. When the battery device operates abnormally, the battery management unit controls the switch component to make the switch component stop provision of the temperature indication signal at the temperature port.

Abstract: A method of controlling firing mode for an electric nail gun is provided. The electric nail gun includes a control module that, when operating in a program selecting state in an intelligent firing mode, executes a single firing program or a continuous firing program based on which of a safety switch and a trigger switch of the electric nail gun is being activated . When executing the continuous firing program, the control module forbids execution of a nail firing action when determining that the electric nail gun has not been fired for longer than a predetermined time period.

Abstract: A retaining device adapted for use with an electric nail gun includes: a swing arm unit adapted to swing relative to a flywheel of the nail gun; an impact unit adapted to swing with the swing arm unit, and being movable between a pre-striking position proximate to the flywheel, and a striking position distal from the flywheel; a retrieving unit configured to bias the impact unit to move to the pre-striking position; and first and second positioning members connected respectively to the swing arm unit and the impact unit, and telescopically engaged with and in frictional contact with each other when the impact unit is at the pre-striking position, so as to position the impact unit on the swing arm unit.

Abstract: A nail gun includes a gun body, a muzzle unit, a nail-feeding unit, a nail-striking unit, and a control unit for controlling the nail-feeding unit and the nail-striking unit to implement a method for feeding nails. The method includes the following steps: energizing a nail-striking solenoid valve of the nail-striking unit to perform a nail-striking operation on one of the nails; de-energizing the nail-striking solenoid valve, and simultaneously starting to count a predetermined delay time period in idle; and upon elapse of the predetermined delay time period, energizing a nail-feeding solenoid valve of the nail-feeding unit to perform a nail-feeding operation on another one of the nails.

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 portable grinding tool includes a casing structure and a drive unit. The casing structure includes a main body part defining a first axis, and a grip part extending from the main body part along a second axis. The drive unit is mounted to the main body part and includes a rotating shaft for outputting rotational kinetic energy, the rotating shaft has an output section that extends along the first axis and passes out through the main body part. The output section and the grip part cooperate to define an angle included therebetween and ranging between 95 and 135 degrees.

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: A pneumatic tool includes a casing, a cylinder unit, a valve knob and a pneumatic sealing device. The casing has a main portion that has an inner surface defining a receiving space therein, and an outer surface opposite to the inner surface. The cylinder unit is mounted in the receiving space. The valve knob is disposed in the receiving space and is rotatably connected to the cylinder unit. The pneumatic sealing device includes a ring member that is ring-shaped and rigid, that surrounds and is connected to the valve knob, and that is clamped between the inner surface of the casing and the cylinder unit for keeping a distance between the casing and the cylinder unit constant.

Abstract: A power tool includes an air spring cylinder. A piston is movably positioned within the cylinder and a driver blade and a rack are attached to the piston. The power tool includes a lifter gear including a lifter gear wheel portion, and a plurality of teeth extending radially from the lifter gear wheel portion and configured to engage the rack. A hub includes a first end operably connected to a motor output and a second end including a hub wheel portion. A first receptacle is provided in one of the lifter gear and the hub and a first bearing element extends from the other of the lifter gear and the hub into the first receptacle. A first elastomeric damper is positioned within the first receptacle between the first bearing element and a bearing element defined portion of the first receptacle.

Abstract: A pneumatic tool with a forward and reverse rotation structure includes a housing, a retaining member, two push buttons and a positioning pin. The housing includes an installation space. The retaining member is arranged inside the installation space to divide it into two push button accommodating cavities. The two push buttons movably slide inside the two push button accommodating cavities. The retaining member restricts the sliding ranges of the two push buttons. The positioning pin penetrates into the housing to allow the retaining member to be secured by the housing and the positioning pin. Accordingly, the retaining member is secured firmly while allowing it be removed for replacement and repair, the positioning pin is prevented from slippage, and any slipping off or snapping off of components between the sliding block of the push button and the slot wall of the retaining member can also be prevented.

Abstract: An electric nail gun includes a nail-striking subunit that is adapted to strike a nail, a lifting wheel that is movable to become engageable and not engageable with the nail-striking subunit, a driving member that is rotatable by a motor, and a transmission shaft that is movably connected between the driving member and the lifting wheel, and that is convertible between a first position, where the lifting wheel is engageable with the nail-striking subunit such that rotation of the driving member results in movement of the nail-striking subunit, and a second position, where the lifting wheel is not engageable with the nail-striking subunit such that rotation of the driving member does not result in movement of the nail-striking subunit.

Abstract: A method for controlling a nail-striking operation of an electric nail gun is proposed. The electric nail gun includes a control module and at least one switch. The at least one switch outputs a first switch signal that has a first voltage and a second switch signal that has a second voltage when triggered. The control module set a flag that corresponds to the at least one switch to a predetermined state upon determining that a striking condition is met. The striking condition includes that, for each of the at least one switch, the first switch signal has the first voltage and the second switch signal has the second voltage.

Abstract: 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.

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: An electric nail gun includes a supporting frame, a swing arm, a driving unit, and a safety unit. The swing arm has a driven segment and is pivotable relative to the supporting frame between a standby position and a shooting position. The driving unit includes a driving member in contact with the driven segment of the swing arm and operable for moving the swing arm towards the shooting position. The safety unit has a stopping member that is driven by the driving member to move relative to the driven segment between a stopping position, where the stopping member blocks movement of the driven segment, and a releasing position, where the movement of the swing arm towards the shooting position is permitted.

Abstract: A nail gun includes a frame unit, a flywheel, and a nail-striking device that includes an actuation unit, an impact member and an accidental discharge prevention unit. The actuation unit includes a safety subunit. The impact member has a confining portion. The accidental discharge prevention unit includes a restraining member located between the confining portion of the impact member and the safety subunit. The actuation unit is operable to convert the restraining member from a restraining state, in which the restraining member restrains movement of the confining portion of the impact member, to a releasing state, in which the movement of the confining portion of the impact member is permitted.

Abstract: A tool adapter quick-release structure includes an adapter and a locking mechanism. The adapter includes a seat portion and an engagement portion extended forward from the seat portion, and an installation hole formed to penetrate into the seat portion via the engagement portion. The locking mechanism includes a movable sleeve mounted onto the seat portion, an installation pin inserted into the movable sleeve and an elastic member abutted against the installation pin to push the movable sleeve axially, and the movable sleeve allowing a fixation member to penetrate through the seat portion to protrude outward inside the installation hole via push of the elastic member. The seat portion includes a repair hole corresponding to the installation pin and is connected to the installation hole.

Abstract: A belt sander includes a main casing, a frame arm rotatably connected to the main casing, an abrasive belt mounted to the frame arm and adapted to be driven by electric power, a positioning member, a first sensor and a second sensor. The positioning member is movably mounted to the main casing and is movable relative to the main casing between a releasing position, where the first and second sensors are in a first sensor state, and where the second sensor generates a first signal for ceasing the electric power, and a first engaging position, where the first and second sensors are in the second sensor state, and where the second sensor generates a second signal for conducting the electric power.