Abstract: An auto hammer having a housing, a grip portion and a striking device. The striking device includes a striking rod for striking a nail or other element using a straight reciprocating motion. The striking device has an associated clamping mechanism for clamping the nail or other element. The clamping mechanism has a driving portion, a first clamping portion, and a second clamping portion. The first and second clamping portions are moved between a closed position and an opened position. In the closed position, the element is held between the first and second clamping portions. A first slot and a second slot are arranged on the first and second clamping portions respectively. The driving portion is arranged in both the first and second slots and moves along the first and second slots.

Abstract: A saw blade clamping mechanism includes a saw blade spindle, a support sleeve, a clamping pin, and a rotating sleeve. The spindle has a longitudinal receiving slot and an axial elongate slot. The rotating sleeve has a retaining slot. A movable pin is secured on the rotating sleeve and extends through the elongate slot. A latch pin is fixed on the support sleeve and is held within the retaining slot. The rotating sleeve is movable from a first position to a second position. When the rotating sleeve is in the first position, the latch pin is positioned at an outer end of the circumferential section of the retaining slot and the clamping pin inserts into the longitudinal receiving slot of the spindle to fix a saw blade. When the rotating sleeve is in the second position, the latch pin is positioned at an upper end of the axial section of the retaining slot and the clamping pin retracts from the receiving slot of the spindle to release the saw blade.

Abstract: This invention provides an auto hammer comprising a housing, a head assembly including a striking device and transmission mechanism. The striking device includes a striking rod having a striking end. The transmission mechanism includes an impact wheel. The distance from the end surface of the striking end of the striking rod to the center of the impact wheel between 40 mm and 100 mm. This distance is arranged very small, in favor of the hammer being used in some narrow spaces. The auto hammer according to this invention meets the requirements of being used in narrow spaces by hands, thereby suitable for use in various circumstances.

Abstract: A sander according to the present invention comprising a housing, a motor and a transmission mounted within the housing, a sanding plate mounted below the housing, a battery pack mounted at the rear end of the housing and a balancer mounted on either the housing or the sanding plate. The balancer includes a balance element disposed in the front part of the sander. The balance element is balanced with the battery pack, which solves the balance problem of the DC sanders known in the prior art while still providing a battery pack that can satisfy the power requirements of the sander.

Abstract: The present invention provides both an impact switching function and a shaft locking function for use in an impact screwdriver. The impact screwdriver includes a housing, a motor located in the housing, a motor drive shaft driven by the motor, a hammer which can move axially and rotate around the motor drive shaft, a hammer anvil, an impact switching device and a shaft locking apparatus. The shaft locking apparatus has a mating member coupled with the hammer anvil, an engagement ring fixed to the housing and a middle member located between the mating member and the engagement ring. The shaft locking apparatus has a locked position, where the mating member is secured to the hammer anvil and also secured to the engagement ring and the housing.

Abstract: An electric router includes a housing, a base, a motor having an output shaft, a first switch for the motor, a locking member having a first end and a second end, a second switch connected in series with the first switch, and a connecting rod having a first end positioned proximate to the base and a second end positioned remotely from the base. The first end of the connecting rod is connected with the second end of the locking member, the second end of the connecting rod is connected with the second switch, and the second end of the connecting rod selectively keeps the second switch in one of a switch-off position when the first end of the locking member engages with the output shaft and a switch-on position when the first end of the locking member disengages from the output shaft.

Abstract: A reciprocating saw having a housing, a reciprocating shaft unrotatably connected to a blade, a rear handle and a forward handle, the forward handle being rotatably mounted to the housing near the blade and capable of sliding relative to the reciprocating shaft, but incapable of rotating relative to the reciprocating shaft. The forward handle comprises at least one hole, the reciprocating saw further includes a button connected to a locking element for engaging or disengaging with the at least one hole. The reciprocating saw is easy and comfortable to operate.

Abstract: The laser distance measuring device of the present invention comprises an emitting part having a laser generating device with a first spectral bandwidth arranged on an emitting optical path and a collimating lens. The emitting part also has an optical filter with a second spectral bandwidth which is less than the first spectral bandwidth. The laser distance measuring device also has a receiving part having a photoelectric receiving and conversion device to receive the measuring beam reflected by the object to be measured and convert it into an electric signal. Using the optical filter, most of the unneeded portions of the laser beam emitted from the laser are filtered out so that the useful proportion of the measuring beam of the laser beam is improved and the ranging capability of the laser distance measuring device under a bright or strong light environment is enhanced.

Abstract: A nailer device is carried within a housing having a nozzle portion wherein the nozzle portion is connected with the housing via a head portion of the housing. The nozzle portion includes a sleeve, a fixing member, and a magnetic member located between the sleeve and the fixing member. The fixing member is mounted on the sleeve and the fixing member has a groove in which the magnetic member is arranged.

Abstract: An electrical device, such as a nailer device, has a motor and a gear housing containing a transmission mechanism. The transmission mechanism is coupled to the motor for driving an impact member. The transmission mechanism includes a shaft having a through-hole wherein a first opening of the through-hole is communicated with the interior of the gear housing and a second opening of the through-hole is communicated with an exterior of the gear housing.

Abstract: A portable angle impact tool has a housing, a motor arranged within the housing, a transmission mechanism which comprises a transmission rod extending along a longitudinal axis X driven by the motor and a spindle extending along an axis Y which is perpendicular to the axis X and driven by the transmission rod, and a switch assembly for controlling the motor located proximate to the spindle and arranged within an upper ? of the housing.

Abstract: A portable angle impact tool has a housing, a motor arranged within the housing, a transmission mechanism which is driven by the motor and which drives an output shaft, a switch assembly for controlling the motor, and a PCB board wherein a circuit of the switch assembly is arranged on the PCB.

Abstract: A portable angle impact tool includes a housing, a motor, and a transmission mechanism. The transmission mechanism includes a transmission rod extending along an axis X, a spindle extending along an axis Y perpendicular to the axis X, an impact assembly for driving an output shaft and connected with the spindle, a first transmission element positioned on the transmission rod and engaging with a second transmission element positioned on the spindle, and a pinion positioned on of the transmission rod engaging with a gear on a motor shaft of the motor. In a direction of the axis Y, the impact assembly and the spindle are located on one side of the second transmission element and the longitudinal axis X of the transmission rod is located on the other side of the second transmission element to provide the impact tool with a more compact arrangement and higher output power from the output shaft.

Abstract: A working tool adapted for use with an oscillating tool includes a hole defining a longitudinal axis and has a plurality of bulges which depart from the longitudinal axis by a radial distance. Each of the bulges has two flanks that extend inwardly towards the longitudinal axis and which are connected with each other at a recess portion that is formed between every adjacent two of the bulges. An arc portion of one of the bulges has a length which is unequal to a length of an arc portion of the other one of the bulges. By arranging bulges with unequal arc lengths in the hole of the working tool, the working tool can be mounted to different oscillating tools at multiple angles and, by decreasing the number of the bulges, contact between the bulges and an output shaft of the oscillating tool reduces wear and increases the service life of the output shaft.