Abstract: An internal rotor type nail drive device of electric nail gun, comprising a nailing rod and an internal rotor type rotary actuator that can output a specific rotation angle and can drive the nailing rod to move downward for nailing. Specifically, the rotary actuator comprises a stator and a rotor arranged inside the stator, even groups of electromagnetic mutual action components are configured in pairs between the stator and the rotor, to generate a tangential force to drive the rotor to rotate for a specific rotation angle, and to drive the nailing rod to move for a nailing stroke. The nailing stroke can be determined by a specific rotation angle. Thus, through the above configuration of the rotary actuator, the structure of the electric nail gun can be simplified, and the kinetic energy for nailing can be increased.

Abstract: Provided are structures and methods for forming structures with sloping surfaces of a desired profile. An exemplary method includes performing a first etch process to differentially etch a gate material to a recessed surface, wherein the recessed surface includes a first horn at a first edge, a second horn at a second edge, and a valley located between the first horn and the second horn; depositing an etch-retarding layer over the recessed surface, wherein the etch-retarding layer has a central region over the valley and has edge regions over the horns, and wherein the central region of the etch-retarding layer is thicker than the edge regions of the etch-retarding layer; and performing a second etch process to recess the horns to establish the gate material with a desired profile.

Abstract: A nail drive device of electric nail gun includes a nailing rod and a rotary actuator that can output a specific rotation angle and can drive the nailing rod to move downward for nailing. Specifically, the rotary actuator includes a stator and a rotor surrounding it, between the stator and the rotor, even groups of electro-magnetic mutual action components are configured in pairs, to generate a tangential force to drive the rotor to rotate for a specific rotation angle, and to drive the nailing rod to move for a nailing stroke. The nailing stroke can be determined by the specific rotation angle. Thus, through the above configuration of the rotary actuator, the structure of the electric nail gun can be simplified.

Abstract: A nail drive method applied in an electric nail gun, in which a rotary actuator is driven to generate forward rotational kinetic energy for nailing. The rotary actuator has paired wire bundles and magnetic lines arranged in circumferential directions. The nail drive method comprises boosting a pre-loaded voltage of a battery to generate a peak voltage, and storing the electric charge generated by the peak voltage, and then releasing the peak voltage and its electric charge to the rotary actuator through a nailing signal, so that the wire bundles can generate a current to interact with the magnetic lines to generate a tangential force, so that the magnetic lines can drive the rotor to rotate for a specific angle, and the rotary actuator can directly generate a forward rotational kinetic energy for nailing. Thus, the energy conversion structure installed in the conventional electric nail gun can be omitted.

Abstract: A nail drive device of electric nail gun includes a nailing rod and a rotary actuator that can output a specific rotation angle and can drive the nailing rod to move downward for nailing. Specifically, the rotary actuator includes a stator and a rotor surrounding it, between the stator and the rotor, even groups of electro-magnetic mutual action components are configured in pairs, to generate a tangential force to drive the rotor to rotate for a specific rotation angle, and to drive the nailing rod to move for a nailing stroke. The nailing stroke can be determined by the specific rotation angle. Thus, through the above configuration of the rotary actuator, the structure of the electric nail gun can be simplified.

Abstract: An air-path structure of a pneumatic nail gun includes a main chamber formed in a gun body, a piston driving chamber and a timekeeping chamber that continuously releases pressurized air to the outside. The gun body is equipped with a trigger valve and a bar valve, and a security chamber and an auxiliary chamber are formed in the trigger valve; the trigger valve controls the pressurized air in the piston driving chamber to be discharged to the outside; and the bar valve controls the pressurized air in the main chamber to go into the piston driving chamber, the timekeeping chamber and the auxiliary chamber. The security chamber is permanently connected to the main chamber for concentrating upon the pressurized air, and the bar valve controls the pressurized air in the main chamber to be discharged into the timekeeping chamber, so as to improve the safety of pneumatic nail gun when used.

Abstract: An electrical connector is disclosed. The electrical connector has a casing, a terminal seat and a conductive plastic element. The terminal seat is mounted in the casing and has an insulator board and a terminal set. The terminal set has a ground terminal and a high-speed signal terminal set. One side of the conductive plastic element is mounted on an inner wall of the casing and another side thereof passes through the insulator board to be close to the high-speed signal terminal set. When the casing is electrically connected to a ground, the conductive plastic element is electrically connected to the ground through the casing. Therefore, the conductive plastic element may eliminate a noise interference caused by the high-speed signal terminal set during high-speed transmission. A crosstalk and a common-mode interference are also reduced to keep the stability of signal transmission of the electrical connector.

Abstract: An air-path structure of pneumatic a nail gun, formed inside a gun body containing high-pressure air, comprises a main air chamber, a firing valve air chamber and a time-delayed air chamber that continuously releases the high-pressure air to the atmosphere. The gun body is configured with a trigger valve and a slider valve. The inside of the trigger valve is formed with a safety-on air chamber and a safety-off air chamber. The trigger valve controls the high-pressure air inside the firing valve air chamber to be discharged to the atmosphere. The slider valve controls the high-pressure air inside the main air chamber flowing toward the firing valve air chamber, the time-delayed air chamber and the safety-off air chamber. Specifically, the safety-on air chamber is constantly communicated with the main air chamber and constantly contains high-pressure air, and the slider valve can control the high-pressure air inside the safety-off air chamber flowing into the time-delayed air chamber.

Abstract: Electrical connector grounding structure includes electrically insulative housing having accommodation hole located on base thereof and tongue plate forwardly extended from base, conducting terminal sets positioned in electrically insulative housing and including one or more than one grounding terminal, one or more than one power terminal and plurality of signal terminals, conducting member mounted in accommodation hole and having first contact portion located at top and second contact portion downwardly extended from first contact portion and kept in contact with grounding terminal, and shielding shell surrounding electrically insulative housing and kept in contact with first contact portion.

Abstract: Electrical connector grounding structure includes electrically insulative housing having accommodation hole located on base thereof and tongue plate forwardly extended from base, conducting terminal sets positioned in electrically insulative housing and including one or more than one grounding terminal, one or more than one power terminal and plurality of signal terminals, conducting member mounted in accommodation hole and having first contact portion located at top and second contact portion downwardly extended from first contact portion and kept in contact with grounding terminal, and shielding shell surrounding electrically insulative housing and kept in contact with first contact portion.

Abstract: An electrical connector is disclosed. The electrical connector has a casing, a terminal seat and a conductive plastic element. The terminal seat is mounted in the casing and has an insulator board and a terminal set. The terminal set has a ground terminal and a high-speed signal terminal set. One side of the conductive plastic element is mounted on an inner wall of the casing and another side thereof passes through the insulator board to be close to the high-speed signal terminal set. When the casing is electrically connected to a ground, the conductive plastic element is electrically connected to the ground through the casing. Therefore, the conductive plastic element may eliminate a noise interference caused by the high-speed signal terminal set during high-speed transmission. A crosstalk and a common-mode interference are also reduced to keep the stability of signal transmission of the electrical connector.

Abstract: An air-path structure of a pneumatic nail gun, including a main chamber of pressurized air formed in a gun body, a piston driving chamber and a timekeeping chamber that continuously releases pressurized air to the outside, the gun body is equipped with a trigger valve and a bar valve, and a security chamber and an auxiliary chamber are formed in the trigger valve; the trigger valve can control the pressurized air in the piston driving chamber to be discharged to the outside; and the bar valve can control the pressurized air in the main chamber to go into the piston driving chamber, the timekeeping chamber and the auxiliary chamber; wherein the security chamber is permanently connected to the main chamber for concentrating upon the pressurized air, and the bar valve can control the pressurized air in the main chamber to be discharged into the timekeeping chamber, so as to improve the safety of traditional pneumatic nail guns when used.

Abstract: A method for designing a spline surface contour of a roller-type wave-motion includes of the steps of slicing radial movement track of a roller between a cam and a spline aperture and circumference rotation track at equal proportion at equal time intervals to sequentially obtain circle centers and points of tangency of the track circles during movement of the roller; connecting the points of tangency to form a unit cam circumference segment of a cam periphery in order to draw and form a single-sided tooth flank contour; and forming a correspondent side tooth flank contour by mirroring and projecting the single-sided tooth flank contour. A method of forming a spline wheel contour and a method of forming a cam periphery are obtained.

Abstract: A motorized gear reducer is provided with a hollow motor in the housing and including an annular rotor having a through hole, and a shaft passing through the through hole; and a planetary gear train in the through hole and placed on the shaft, the planetary gear train including a sun gear assembly having a first sun gear in the housing, and a second sun gear on the shaft; planet gear assemblies equally spaced apart around the sun gear assembly, each including a first planet gear meshing with the first sun gear, and a second planet gear coaxially disposed with the first planet gear and meshing with the second sun gear; and a ring gear on an inner surface of the rotor. A speed reduction ratio of a first stage and a speed reduction ratio of a second stage are rendered.

Abstract: A gear motor for decreasing speed at a mechanical power output is provided with a housing; a supporting shaft disposed along an axis of the housing and fastened in the housing; a planetary gear train as a speed reducer which is rotatably supported by the supporting shaft; and an electric motor including an outer stator and an inner permanent magnet, the electric motor disposed around the planetary gear train and within the housing. The planetary gear train includes a stationary sun gear secured to the housing and coaxially disposed around the axis of the housing; a driving sun gear as a torque output; planet gear assemblies equally spaced around an outer surface of the stationary sun gear. Each planet gear assembly includes coaxial first and second gears; and a carrier pivotably supported by the supporting shaft and attached to the permanent magnet.

Abstract: A torque sensing device includes an idle wheel disposed between a force input shaft and a force output shaft, the idle wheel receives a tangential force from the force input shaft and the force output shaft to generate a counterforce as a loading, the center of the idle wheel is pivotally disposed on a positioning beam or a basis nearby, the positioning beam has a beam central line where a strain gauge installed. The positioning beam transforms the loading of the idle wheel along the beam central line to a normal force on the cross section of the positioning beam along the beam central line, the positioning beam generates a strain due to the normal force on the cross section of the positioning beam, the strain gauge detects the strain as the torsion sensing value of the output shaft on the region between the force input shaft and the force output shaft. A rotational driving tool is combined with the torque sensing device to improve the detecting precision of the torsion.

Abstract: A gear motor for decreasing speed at a mechanical power output is provided with a housing; an electric motor including an outer stator and a rotor surrounded and driven by the outer stator; a planetary gear train including planet gear assemblies, a stationary ring gear at one end of the planet gear assemblies, and a driving ring gear at the other end of the planet gear assemblies. Each planet gear assembly includes a first gear and a second gear coaxial with and co-rotated with the first gear. The first and second gears are disposed in a carrier. The first gear meshes the stationary ring gear. The second gear meshes the driving ring gear. A driving shaft is rotatably disposed through the housing and secured to the driving ring gear as a mechanical power output.

Abstract: A motorized gear reducer is provided with an axial support shaft in a housing; a speed reduction device including at least three stages of a sunless planetary gear train, each stage including a stationary ring gear, a rotatable ring gear served as a torque output, and a carrier on the support shaft and served as a torque input of each stage; planet gear sets, each in the carrier and including a first planet gear meshing the stationary ring gear, and a second planet gear meshing the rotatable ring gear, the rotatable ring gear of the last stage extending out of the housing to serve as a torque output of the speed reduction device; and a hollow motor surrounding the first stage and including a stator, a rotor surrounded and driven by the stator, and windings for rotating the rotor.

Abstract: A gear motor for decreasing speed at a mechanical power output is provided with a housing; a supporting shaft disposed along an axis of the housing and fastened in the housing; a planetary gear train as a speed reducer which is rotatably supported by the supporting shaft; and an electric motor including an outer stator and an inner permanent magnet, the electric motor disposed around the planetary gear train and within the housing. The planetary gear train includes a stationary sun gear secured to the housing and coaxially disposed around the axis of the housing; a driving sun gear as a torque output; planet gear assemblies equally spaced around an outer surface of the stationary sun gear. Each planet gear assembly includes coaxial first and second gears; and a carrier pivotably supported by the supporting shaft and attached to the permanent magnet.

Abstract: A motorized gear reducer is provided with an axial support shaft in a housing; a speed reduction device including at least three stages of a sunless planetary gear train, each stage including a stationary ring gear, a rotatable ring gear served as a torque output, and a carrier on the support shaft and served as a torque input of each stage; planet gear sets, each in the carrier and including a first planet gear meshing the stationary ring gear, and a second planet gear meshing the rotatable ring gear, the rotatable ring gear of the last stage extending out of the housing to serve as a torque output of the speed reduction device; and a hollow motor surrounding the first stage and including a stator, a rotor surrounded and driven by the stator, and windings for rotating the rotor.