Abstract: The present invention reveals a massage chair having concealable leg massage unit, including a massage chair and a leg massage unit positioned in a front portion of the massage chair. The two sides of the massage chair are provided with guiding tracks respectively and a moving means which moves along the guiding tracks. The rear portions of the guiding tracks are horizontal, and the front portions arc upward. The moving means is fixed with forward extended push-pull rods with a front end of each push-pull rod pivotally connected to a rear end of a tow board. A front end of the tow board is provided with a rolling wheel, and the leg massage unit is pivotally connected between two tow boards. The present invention not only reduces the volume of a massage chair but also makes itself more convenient and comfortable to users.

Abstract: The present invention reveals a massage chair having concealable leg massage unit, including a massage chair and a leg massage unit positioned in a front portion of the massage chair. The two sides of the massage chair are provided with guiding tracks respectively and a moving means which moves along the guiding tracks. The rear portions of the guiding tracks are horizontal, and the front portions arc upward. The moving means is fixed with forward extended push-pull rods with a front end of each push-pull rod pivotally connected to a rear end of a tow board. A front end of the tow board is provided with a rolling wheel, and the leg massage unit is pivotally connected between two tow boards. The present invention not only reduces the volume of a massage chair but also makes itself more convenient and comfortable to users.

Abstract: A massaging mechanism includes a first rotary shaft supported in a right-and-left direction right and left swing arms relatively rotatably mounted on the first rotary shaft, massaging heads each secured to an upper and a lower end portion of each of the swing arms, a bracing member engaged with each of the swing arms to restrain the swing arm from rotating in connection with rotation of the first rotary shaft, a first operating mechanism for swinging the swing arms in opposite directions in the right-and-left direction to each other so that a right and left pair of massaging heads respectively secured to the upper end portions move toward each other while the massaging heads respectively secured to the lower end portions of the swing arms are moved away from each other in the right-and-left direction, and vice versa, by the rotation of the first rotary shaft.

Abstract: A 384X-based burst mode PWM controller includes an oscillator to generate a pulse signal of a constant frequency, an output circuit to generate an output signal based on the pulse signal, an error amplifier to generate an amplified error signal, a logic control current source connecting to a current sense input of a comparator, the comparator which compares the voltage of the current sense input with the voltage of the error signal to generate a comparison signal, a PWM latch to generate a pulse control signal corresponding to the pulse signal and based on the comparison signal. The pulse control signal controls the output circuit and the logic control current source in opposite conditions of turning on and off. The controller can replace 384X directly and save energy.

Abstract: A massaging mechanism includes a first rotary shaft supported in a right-and-left direction, a pair of right and left swing arms relatively rotatably mounted on the first rotary shaft, a plurality of massaging heads each secured to an upper end portion and a lower end portion of each of the swing arms, a bracing member engaged with each of the swing arms so as to restrain the swing arm from rotating in connection with rotation of the first rotary shaft, a first operating mechanism for swinging the swing arms in opposite directions in the right-and-left direction to each other so that a right and left pair of massaging heads respectively secured to the upper end portions are moved toward each other while a pair of right and left the massaging heads respectively secured to the lower end portions of the swing arms are moved away from each other in the right-and-left direction, and vice versa, by means of the rotation of the first rotary shaft, and a second operating mechanism linked to the bracing member for rec