A pneumatic lifting table frame includes a transverse beam, at least one column, a pressure sensor that detects a load of the lifting table frame, a controller configured to receive a signal from the pressure sensor, and an adjustable gas spring assembly configured to drive the column to be lifted or lowered. The adjustable gas spring assembly includes an adjustable gas spring body, a gas reservoir, a piston rod assembly, and a drive unit. The adjustable gas spring body is connected to the gas reservoir via a gas pipe. The controller is configured to control the drive unit, the adjustable gas spring body (401) is disposed in one of the column, and the drive unit drives the piston rod assembly to carry out a piston motion in the gas reservoir.

A control circuit applied to a lifting platform controls a motor to adjust the height of a platform. The control circuit includes an AC/DC conversion circuit, a DC/DC conversion circuit, a detection unit, and a control unit. The detection unit detects an output end of the AC/DC conversion circuit and provides a detection signal. The control unit provides a PWM signal according to the detection signal to control the DC/DC conversion circuit so that the DC/DC conversion circuit converts a DC voltage to an output voltage. When the control unit realizes that the DC voltage or a DC power provided by the AC/DC conversion circuit is less than a power supply threshold according to the detection signal, the control unit decreases a duty cycle of the PWM signal to maintain the DC voltage or the DC power to be greater than or equal to the power supply threshold.

The invention relates to an actuator system (100) for a table (200) having at least two table legs (210) of variable length and a table top (220) held by the table legs (210), characterized in that it comprises at least two master cylinders (10), each having a cylinder (10a) and a piston (10b) movable in the cylinder (10a) and a piston rod (10c) for moving the piston (10b), wherein a slave cylinder (20) having a cylinder (20a) and a piston (20b) movable in the cylinder (20a) for changing the length of the table leg (210) is connected to each of the master cylinders (10) by means of a conduit (40) allowing fluid (30) flow between the master cylinder (10) and the slave cylinder (20), and wherein the piston rods (10c) of the master cylinders (10) are mechanically connected to each other by means of a rigid connecting element (45), and wherein a drive unit (52) in a rigid drive connection (50) with the connecting element (45) is connected to the connecting element (45) for simultaneously moving the pistons (10a) of the master cylinders (10). The invention further relates to a multifunctional table (200) comprising an actuator system (100) according to the invention.

A lifting table contains a linear drive. The linear drive has a housing, a drive with an electric motor arranged outside the housing, and a linear unit arranged in the housing. In addition, a sensor device for determining a force acting on the linear drive is provided. The sensor device has a stress body, which is configured to axially support a drive-side end of the linear unit and on the inner or outer surface of which there is arranged a load sensor assembly for detecting a mechanical stress of the stress body.

A lifting mechanism includes: a cross-arm assembly including a first combined arm and a second combined arm arranged in parallel, the first and second combined arms each comprising a first support member and a second support member, the length of the first support member being greater than the length of the second support member; a support connection assembly including a first rotational connection assembly and a first sliding connection assembly fixed to a base, and a second rotational connection assembly and a second sliding connection assembly fixed to the bottom side of a table top, the first and second sliding connection assemblies each comprising a slide rail and a moving member rotatably and slidably arranged in the slide rail; and a driving member connected to the cross-arm assembly and/or the support connection assembly for driving the moving members to change their position on the slide rail.

An adjustment mechanism assembly for adjusting a work surface position vertically; includes a vertical guiding element, a work surface support element engaged with the vertical guiding element and configured to be movable vertically with electric actuation, and means for the electric actuation comprising a cable. The adjustment mechanism assembly includes a vertical support member which extends vertically from within the vertical guiding element to outside it or resides completely within the vertical guiding element. The cable includes a spiraled portion between its termini, which spiraled portion is supported with respect to its central axis by the support member. The disclosed solution also has a wall structure and a table comprising such an adjustment mechanism assembly.

A method for controlling safe operation of an electric table includes: starting the default setting value or self-set setting value of a sensor unit stored in a memory after power-on; making sure that an electric control module activates the sensor unit when the electric table is raised or lowered, and the sensor unit detects the vibration amplitude of the electric table and records the number of vibrations when the vibration amplitude exceeds the setting value; when the recorded number of vibrations is greater than the default setting value or self-set setting value, the electric control module controls a power mechanism on the electric table to make a rebound action in the opposite direction when the electric table is raised or lowered. Acceleration and gyroscope sensors are vertically installed on a small board, so that the sensitivity of the gyroscope to vibration detection is increased.

Disclosed is a self-locking apparatus for a linear actuator, which relates to the field of linear actuation equipment. The self-locking apparatus includes a one-way bearing and a friction collar, wherein the one-way bearing includes an inner race and an outer race, the inner race being sleeved to the rotary screw of the linear actuator, the friction collar being connected to the outer race; wherein the self-locking apparatus further includes a friction member fitted with the friction collar, such that when the rotary screw rotates forwardly, the outer race does not rotate; and when the rotary screw rotates reversely, the outer race, the inner race, and the friction collar rotate synchronously, such that friction is produced by contacting between the friction collar and the friction member. Further disclosed is a linear actuator applying the self-locking apparatus.

An adjustable desk easy to disassemble comprises: a crossbeam used as a bearing structure of the adjustable desk; two desk legs disposed at two ends of the crossbeam, pivotably connected to the crossbeam and used to stabilize relative positions of the desk legs and the crossbeam through first locking parts; and two brackets disposed at the two ends of the crossbeam, fixed to the crossbeam through second locking parts. When the adjustable desk needs to be assembled or disassembled, the first locking parts and the second locking parts are removed to allow the two desk legs to rotate towards or opposite to each other to complete assembly or disassembly of the adjustable desk.

An adjustable desk easy to disassemble comprises: a crossbeam used as a bearing structure of the adjustable desk; two desk legs disposed at two ends of the crossbeam, pivotably connected to the crossbeam and used to stabilize relative positions of the desk legs and the crossbeam through first locking parts; and two brackets disposed at the two ends of the crossbeam, fixed to the crossbeam through second locking parts. When the adjustable desk needs to be assembled or disassembled, the first locking parts and the second locking parts are removed to allow the two desk legs to rotate towards or opposite to each other to complete assembly or disassembly of the adjustable desk.