Abstract: A support device with differential mechanism transmission includes a base, a transmission device and a support mechanism. When the ring gear of the differential mechanism of the transmission device drives the first planetary gear assembly of the transmission device to rotate, the first planetary gear assembly cooperates with the central gear and the second planetary gear assembly of the transmission device to determine the sequence of unilateral transmission of the first lead screw and the second lead screw of the transmission device to drive the supporting legs of the support mechanism to expand outward or retract inward. In turn, it achieves the purpose of stable support, and has the effects of simple structure, miniaturization and cost reduction.

Abstract: An electric sofa power supply system includes a power supply unit, a USB female connector having a trigger signal. When the trigger signal pin of the USB female connector is electrically connected with a mating USB male connector of an external electric device, the control unit controls the power supply unit to provide power to the USB female connector. When the USB female connector is electrically disconnected from the mating USB male connector of the external electric device, the control unit cuts off the power supply of the power supply unit to the USB female connector, achieving zero power consumption, energy saving and environmental protection, and enhancing the safety of using the power supply system. The electric sofa power supply system does not need to add a switch to the electric sofa to control the power supply of the USB female connector, which greatly increases the aesthetics and practicability.

Abstract: A linear actuator includes an actuator body including a housing, a gear set mounted inside the housing, a drive unit mounted outside the housing for rotating the gear set, a transmission mechanism including a lead screw with an axial rod at one end thereof fastened to the gear set, a stopper component set fastened to a neck of the axial rod, two bearing housings mounted on the axial rod at two opposite ends of the neck and two thrust bearings respectively mounted in the bearing housings. When the lead screw is rotated, a first stopper block of the stopper component set is engaged with the neck of the axial rod to force the stopper component set against the thrust bearings, enabling the linear actuator to carry greater axial thrust or tensile load, increasing the high impact load strength of the linear actuator and ensuring overall structural stability and reliability.

Abstract: An improved structure of linear actuator includes an actuator including a gear set having a friction portion located at the periphery of the gear shaft of a driven gear thereof, a one-way bearing mounted on the gear shaft for rubbing against the friction portion to brake the driven gear from reverse rotation, a driver for driving the gear set and a transmission mechanism including a lead screw coaxially coupled to and rotatable by the gear shaft of the driven gear and a retractable tube assembly coupled to the lead screw and movable by the lead screw between an extended position and a received position, and a stopping mechanism including a thrust bearing coupled to the gear shaft of the driven gear and stoppable against an inner race of the one-way bearing inner race to bear an axial thrust load.

Abstract: An electric actuator assembly comprises a main actuator including a gear set containing a stepped friction portion located on a gear shaft of a drive gear thereof, an extension rod, and a power drive for rotating the gear set to move the extension rod through a lead screw, and a one-way bearing consisting of an inner race fitted to the gear shaft of the drive gear, an outer race surrounding the inner race, and a backstop mechanism mounted in between. When operating the power drive to rotate the gear set in lifting the extension rod, the inner race is rotated by the gear set relative to the outer race in one direction. When the driving power is off, the one-way bearing cannot rotate in reverse direction, the stepped friction portion is abutted against the flat contact surface of the inner race to produce a braking effect, preventing falling of the load that is supported on the main actuator.

Abstract: A safety linear actuator assembly includes an actuator including a hollow holder frame, a gear set mounted in hollow holder frame, a driver for rotating gear set and a transmission mechanism that includes a lead screw having a stem located at one end and coupled to gear set and a pin mounted in a pin hole at stem, two bearing holders mounted on stem at two sides of the pin and two thrust bearings mounted on the stem and respectively accommodated in the bearing holders, and a retaining ring mounted in a locating groove at the stem. If the stem breaks accidentally due to that the lead screw bears excessive torsion and impact, the retaining ring will be forced against the respective bearing holders and the hollow holder frame, stopping the lead screw from escaping out of the hollow holder frame and assuring a high level of operational safety.

Abstract: An electric push rod and release mechanism combination structure includes an electric push rod assembly using a coupling for connection to movable frame parts of equipment and a motor to rotate a transmission screw rod through a reducing gear set in moving a retractable tube set between an extended position and a received position, and a release mechanism consisting of a mounting socket, a connection socket, a torsion spring, a clutch module and an operating device and connected between the retractable tube set and the coupling of the electric push rod assembly for operation by a user to release the retractable tube set from the coupling safely with less effort.

Abstract: An actuator includes a base, a motor mounted on the base for driving a worm to rotate a worm gear of a transmission gear set that is set in an accommodation chamber inside the base and has a gear shaft pivotally inserted through the worm gear and fixedly mounted with an output gear, a brake module rotatable with said worm gear, a linking rod assembly having a driven gear meshed with the output gear, a screw rod rotatable with the driven gear, a movable member threaded onto the screw rod and an extension rod connected to the movable block and movable in and out of a sleeved outside the base upon rotation of the screw rod for biasing a crane beam of a lifting device.

Abstract: An electric push rod and release mechanism combination structure includes an electric push rod assembly using a coupling for connection to movable frame parts of an equipment and a motor to rotate a transmission screw rod through a reducing gear set in moving a retractable tube set between an extended position and a received position, and a release mechanism consisting of a mounting socket, a connection socket, a torsion spring, a clutch module and an operating device and connected between the retractable tube set and the coupling of the electric push rod assembly for operation by a user to release the retractable tube set from the coupling safely with less effort.

Abstract: A linear actuator includes a housing formed of a first half shell and a second half shell and defining an accommodation chamber, a front opening in front of the accommodation chamber and a receiving chamber at the bottom side of the accommodation chamber, a driving mechanism having a push rod movably mounted in the accommodation chamber and extending out of the front opening, a motor mounted outside the accommodation chamber and a spindle coupled to and rotatable by the motor for causing the transmission shaft to reciprocate, and limit switches detachably mounted in the receiving chamber for stopping the motor upon movement of the transmission shaft to a front or rear limit position.

Abstract: A quick rising supporting device includes a bar having a first threaded portion and a second threaded portion on the two sides respectively with a first connecting block and a second connecting block, and an axial portion on top of a supporting arm and a swing arm forming a Y shape bar are respectively axially connected to the first and second connecting blocks. A sliding block is formed on a side of the first connection block. The translatory shift of the bar on the second connecting block motivates the first connecting block to move in same direction when the bar rotates, the first connecting block is led by the first threaded portion to rotate and move forward to achieve the dual displacement speed of the supporting device.

Abstract: An actuator includes a base, a motor mounted on the base for driving a worm to rotate a worm gear of a transmission gear set that is set in an accommodation chamber inside the base and has a gear shaft pivotally inserted through the worm gear and fixedly mounted with an output gear, a brake module rotatable with said worm gear, a linking rod assembly having a driven gear meshed with the output gear, a screw rod rotatable with the driven gear, a movable member threaded onto the screw rod and an extension rod connected to the movable block and movable in and out of a sleeved outside the base upon rotation of the screw rod for biasing a crane beam of a lifting device.

Abstract: A lifting motor drive includes a gearbox housing, a transmission shaft mounted inside the gearbox housing and having a first connector at one side for the connection of an external object to be moved by the transmission shaft and a second connector at the other side for the connection of a crank handle for allowing rotation of the transmission shaft manually by a user, a motor for rotating the transmission shaft through a driving gear and a driven gear, and a thermistor, which detects the working temperature of the motor and cuts off power supply from the motor when the working temperature of the motor surpasses a predetermined temperature level.

Abstract: A linear actuator includes a housing formed of a first half shell and a second half shell and defining an accommodation chamber, a front opening in front of the accommodation chamber and a receiving chamber at the bottom side of the accommodation chamber, a driving mechanism having a push rod movably mounted in the accommodation chamber and extending out of the front opening, a motor mounted outside the accommodation chamber and a spindle coupled to and rotatable by the motor for causing the transmission shaft to reciprocate, and limit switches detachably mounted in the receiving chamber for stopping the motor upon movement of the transmission shaft to a front or rear limit position.

Abstract: A lifter is disclosed using two transmission mechanisms at two sides of a housing for lifting, for example, a bed or chair, each transmission mechanism including a motor. a worm gear wheel meshed with a worm shaft as the output of the motor, a screw rod threaded into an inner thread in the hollow gear shaft of the worm gear wheel, a push block fixedly fastened to one end of the screw rod and moved with the screw rod to lift/lower the load upon rotation of the motor, and a sliding block fixedly fastened to the other end of the screw rod to guide axial displacement of the screw rod in the housing.

Abstract: A lifter is disclosed using two transmission mechanisms at two sides of a housing for lifting, for example, a bed or chair, each transmission mechanism including a motor. a worm gear wheel meshed with a worm shaft as the output of the motor, a screw rod threaded into an inner thread in the hollow gear shaft of the worm gear wheel, a push block fixedly fastened to one end of the screw rod and moved with the screw rod to lift/lower the load upon rotation of the motor, and a sliding block fixedly fastened to the other end of the screw rod to guide axial displacement of the screw rod in the housing.