An automatic height adjustment system includes an adjustable desk frame, a first drive assembly operable to control a height of the adjustable desk frame, an adjustable monitor mount, a second drive assembly operable to control a viewing height of the adjustable monitor mount, a transceiver, and a first controller communicatively coupled to the first drive assembly and to the transceiver. The first controller is configured to receive, via the transceiver, a first communication based on the detection of a position of a user from a computing device and to transmit, via the transceiver, a second communication to the first drive assembly to control the height of the adjustable desk frame and movement of the adjustable desk frame and the adjustable monitor mount are synchronized such that an adjustment of the height of the adjustable desk frame causes a corresponding adjustment of the viewing height of the adjustable monitor mount.

A cable management structure applied in a table is disclosed. A revolving column has a first end and a second end. A pair of revolving rollers are disposed in the revolving column and includes a first revolving roller and a second revolving roller arranged spacedly. A pair of supporting columns include a first supporting column forming a first sleeve segment and a second supporting column forming a second sleeve segment. A pair of adjusting rollers include a first and a second adjusting roller disposed in the first sleeve segment and in the second sleeve segment. A cable penetrates the first supporting column and passes around the first adjusting roller, and revolves to the first revolving roller, and passes around the first revolving roller and passes around the second adjusting roller, and revolves to the second revolving roller so as to turn and penetrate into the second supporting column.

An adjustable lifting column for adjusting a piece of furniture comprises a drive assembly, a threaded spindle assembly comprising at least two concentrically arranged threaded spindles, of which an outer threaded spindle concentrically surrounds at least one further threaded spindle, a telescopic tube assembly comprising three concentrically arranged telescopic tubes, and a driver mechanism having an internal thread. The threaded spindle assembly is located within the telescopic tube assembly. Two adjacent threaded spindles of the threaded assembly have a common threaded connection. One of the at least two threaded spindles in the threaded spindle assembly is connected to the drive assembly for driving this one threaded spindle. The outer threaded spindle also has an external thread in which the internal thread of the driver mechanism engages. The driver mechanism is connected to a middle telescopic tube of the three telescopic tubes.

A table includes a table top having a frame attached to a lower surface of the table top. The table also includes a first leg having lugs and a second leg having lugs. The lugs of the first leg and the second leg are received in slots of the frame to attach the legs to the table. The legs are telescopically movable to adjust the height of the table top.

A frame for sit-stand-tables comprising a longitudinal member, two height-adjustable legs with at least two telescopic profiles, namely an outer and an inner profile, and with a driving mechanism, driven by a motor unit, comprising an electric motor and a gear. According to the invention the motor unit is arranged in the longitudinal member and connected to the driving mechanism in the height-adjustable legs. Thus, a frame with a simplified construction is achieved. The construction of the legs can be simplified and at the same time the dimensions can be reduced, as it is not necessary to take the building-in of a motor into the legs into consideration. As both legs are driven by a joint motor unit, the electric control can also be simplified as it will not have to drive the two legs synchronously.

A pressure-adjustable gas spring includes a first gas spring and a gas source for adjusting a pressure. One end of the gas source is connected with the first gas spring and another end is connected with an adjustment device for adjusting the volume of the gas source. The adjustment device includes a cavity for accommodating the gas source and a piston. One end of the piston opposite the gas source is connected with a driving subassembly. The driving subassembly includes a screw. One end of the screw is connected with the piston and another end extends out of the cavity. A nut is arranged on the end of the screw extending out of the cavity. A connection tube is arranged outside the nut in a sleeving manner. One end of the connection tube is connected with the cavity and a rotating block is mounted at an opening of another end.

A height adjustable desk includes a work surface, a first telescoping leg, a second telescoping leg, a driving device, and a switch device. The first telescoping leg and the second telescoping leg are connected to the work surface, and are driven by the driving device to lift or low the work surface to any desired height. The switch device is mounted on the first telescoping leg to be activated when the work surface is moved to a predetermined position. The switch device will turn the motor off to stop the work surface when the switch device is activated.

A frame for sit-stand-tables comprising a longitudinal member (3), two height-adjustable legs (6, 7) with at least two telescopic profiles, namely an outer and an inner profile, and with a driving mechanism, driven by a motor unit (39), comprising an electric motor (46) and a gear. According to the invention the motor unit (39) is arranged in the longitudinal member (3) and connected to the driving mechanism in the height-adjustable legs (6, 7). Thus, a frame with a simplified construction is achieved. The construction of the legs (6, 7) can be simplified and at the same time the dimensions can be reduced, as it is not necessary to take the building-in of a motor into the legs into consideration. As both legs (6, 7) are driven by a joint motor unit (39), the electric control can also be simplified as it will not have to drive the two legs synchronously.

A folding support structure includes a top support and a leg assembly. The top support has a pivot connector and an assembler, wherein the assembler has an assembling surface. The leg assembly includes a column, which includes a pivotally connected end, a free end, and a wing. The column is pivotally connected to the pivot connector of the top support with the pivotally connected end thereof, whereby the column is pivotable relative to the top support. The wing of the column has an abutting surface. When the column pivots to an unfolded position, the abutting surface of the wing contacts the assembling surface of the assembler, and is secured thereto through a fixing connection approach. By folding a top and legs of a desk, the total volume could be reduced, benefiting the cargo capacity utilization, which therefore increases the shipping efficiency. Furthermore, such a desk can be easily assembled.

A modular linear actuator and a height adjustable desk. The modular linear actuator comprises an actuator body module and a motor box module, the motor box module is detachably mounted at an end portion of the actuator body module, and the motor box module outputs the power of a motor to the actuator body module by means of a transmission device. The height adjustable desk comprises a desk plate, a desk frame, and the modular linear actuator. The desk frame is mounted on the actuator body module of the modular linear actuator. The modular linear actuator can be detached and recycled when being scrapped, which reduces the recycling cost and prolong the service life of a product. The motor box modules having different motor models are matched and combined with a plurality of actuator body modules. It enables the use of fewer product types to satisfy more performance requirements.