Abstract: The present invention relates to an electric massage device capable of gradually increasing a massage force during an outward stroke, mainly comprising a massage module and a control module. In the outward stroke, the control module applies a driving current to the electromagnetic driving unit, and the driving current is gradually increased with an elapsed time or a stroke displacement of the output shaft. In a return stroke, the control module deenergizes the driving current or applies a weak reverse current less than one-fifth of the driving current. At the beginning of the outward stroke, the massage force is weak due to the smaller driving current and hence would not cause skin hurt. At the end of the outward stroke, the massage force is strong due to the greater driving current and hence produces a deep muscle massage effect.

Abstract: A massage device comprising an output shaft, a plurality of permanent magnets arranged on the output shaft, and an electromagnetic driving module arranged radially outside the permanent magnets. The stator yoke of the electromagnetic driving module and the permanent magnets interact to generate a cogging torque. The electromagnetic driving module interacts with the permanent magnets to generate an electromagnetic driving force. The massage device has improvements in efficiency and output, is compact and reduces heat generation. The activation of the electromagnetic driving module actuates the output shaft to strike forward. The cogging torque applies a first pulling force to the output shaft to provide braking and buffering to the output shaft. When the output shaft is urged to move in the direction opposite to the strike forward direction from the idle state, the cogging torque applies a first thrust to the output shaft, to thereby increase the output.

Abstract: A control apparatus using variations in conduction angle as control command, wherein a conduction angle modulation module of a traditional leading edge cutoff dimmer is arranged in parallel with a resistance module, so as to enlarge the minimum conduction angle of the leading edge dimmer. The modulation range of the conduction angle of the conduction angle modulation module may be set to a smaller range, so that the modulation range of the resistance module will not be uncertain due to different setting values of the variable resistance, whereby the circuit at load end can be identified readily and function mode switching facilitated to achieve the effect of multiplexing control.

Abstract: A control apparatus for a DC inverter electric motor comprising a control module and a controlled module is disclosed. The control module includes a phase-cut that continuously cut off a conduction angle of the AC power supply. The controlled module comprises a rectification circuit for rectifying the AC power supply after being cut off, a phase detection circuit for detecting the cut-off conduction angle, and a control unit for controlling the rotational speed or action of the motor according to the conduction angle that is detected by the phase detection circuit. The control apparatus makes use of the size of the conduction angle to act as control command and thus does not has the issue of reduced power factor. No complex or complicated circuits or wires have to be disposed and the functions can be achieved by making use of existing wiring. It is thus easy to install, cost-effective, and easy to maintain.

Abstract: A method and apparatus for modulating a load by means of control command obtained by varying conduction angle of AC voltage is provided. Under normal operation, conduction angle of AC is approximate to 180 degrees. When a state change command of the load is to be executed, the angle of conduction angle is changed by a conduction angle modulation circuit of control end. After a conduction angle detection circuit of the load end detects the conduction angle, a control unit decodes the information of the conduction angle, and controls the load to perform a corresponding operation. The method and apparatus do not need to add an extra control wiring for the load, and may use the conduction angle of an AC power supply to effectively perform multifunctional modulations on the load with existing power lines, and the defect of a low power commonly found in a traditional dimmer is overcome.

Abstract: A method and apparatus for modulating a load by means of control command obtained by varying conduction angle of AC voltage is provided. Under normal operation, conduction angle of AC is approximate to 180 degrees. When a state change command of the load is to be executed, the angle of conduction angle is changed by a conduction angle modulation circuit of control end. After a conduction angle detection circuit of the load end detects the conduction angle, a control unit decodes the information of the conduction angle, and controls the load to perform a corresponding operation. The method and apparatus do not need to add an extra control wiring for the load, and may use the conduction angle of an AC power supply to effectively perform multifunctional modulations on the load with existing power lines, and the defect of a low power commonly found in a traditional dimmer is overcome.

Abstract: A control apparatus for a DC inverter electric motor comprising a control module and a controlled module is disclosed. The control module includes a phase-cut that continuously cut off a conduction angle of the AC power supply. The controlled module comprises a rectification circuit for rectifying the AC power supply after being cut off, a phase detection circuit for detecting the cut-off conduction angle, and a control unit for controlling the rotational speed or action of the motor according to the conduction angle that is detected by the phase detection circuit. The control apparatus makes use of the size of the conduction angle to act as control command and thus does not has the issue of reduced power factor. No complex or complicated circuits or wires have to be disposed and the functions can be achieved by making use of existing wiring. It is thus easy to install, cost-effective, and easy to maintain.

Abstract: A control apparatus using variations in conduction angle as control command, wherein a conduction angle modulation module of a traditional leading edge cutoff dimmer is arranged in parallel with a resistance module, so as to enlarge the minimum conduction angle of the leading edge dimmer. The modulation range of the conduction angle of the conduction angle modulation module may be set to a smaller range, so that the modulation range of the resistance module will not be uncertain due to different setting values of the variable resistance, whereby the circuit at load end can be identified readily and function mode switching facilitated to achieve the effect of multiplexing control.

Abstract: The present invention provides an air compressor, characterized in that the piston head has a concave portion having a plurality of through holes therein and a reed piece having a smaller area than that of said concave portion is disposed in said concave portion, said reed piece having an opening in its center to allow a seizing member, respectively, which is seized on a top center of said piston head, for freely moving through said opening, and said seizing member having a confining portion to confine said reed piece within a predetermined space for moving so that said reed piece moves toward or away from said plurality of through holes by means of reciprocally moving said piston rod to improve the air compression efficiency while said air compressor is operating.

Abstract: A motor direct drive air pump comprises a housing, a first shaft, and a second shaft. The housing is formed with a left space and a right space; one of the spaces is a compression chamber having an air inlet and an air outlet; the other space has a transmission chamber and a driving chamber; stators are disposed in the driving chamber. A first shaft is disposed through a central partition of the housing; a first impeller is embedded at a portion of the first shaft located in the compression chamber, while a first gear is embedded at a portion of the first shaft located in the transmission chamber, and rotors are embedded at a portion of the first shaft located in the compression chamber.

Abstract: This invention relates to a motor stator device comprising a stator, a plurality of coils, and a rotor. The stator includes a plurality of serrate portions, and a positioning slot disposed between two serrate portions at an internal wall of the stator, and each positioning slot having a tooth; each coil being wound around each serrate portion in the stator and disposed inside the rotor for producing an electromagnetic attraction when the coil on the stator is connected electrically, so as to drive the rotor to rotate, and enhance the area occupying percentage and the performance of the conducting wire and lower the detention torque without affecting the rigidity of the motor.

Abstract: A piston rod for oil-less air compressor mainly includes a piston head having a centered fixing hole and a plurality of through holes spaced around the fixing hole, and a disk-like check valve screwed to the fixing hole of the piston head without leaving any recess or gap between the check valve and the piston head. When the piston rod is in an upward compress stroke, the check valve tightly bears against the piston head to fully close the through holes on the piston head and keeps the piston head in a completely plane surface without any recess or gaps to form any residual air pressure there at; and when the piston rod is in a downward return stroke, the check valve is in a floating position to open the through holes on the piston head for air to enter into an air cylinder for compression later.

Abstract: An oil-less air compressor mainly includes a motor, a crankcase, and a piston rod moving in the crankcase in rotary motion for external air to enter the crankcase via an air inlet thereof and be discharged from an air cylinder via an air outlet thereof into an external air tank. The air inlet of the crankcase is provided with a plurality of connecting bars to connect to a column centered in the air inlet, an annular filter element is mounted on the central column, and an end cap having a central hole is fitted in the center of the air inlet, so that external air could smoothly pass through the air inlet via through holes formed between the connecting bars.