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.

A workcell comprises a base structure, a column having a lower part connected to the base structure and an upper part which is height-adjustable relative to the lower part. A first and a second support structure are mechanically connected to the upper part of the column via a first and a second joint element to allow axial rotation of the support structures around the column. At least one of the joint elements comprises a latching mechanism configured to block movement of the joint element with respect to the column in a normal state and to release movement of the joint element during an adjustment operation initiated by a user of the workcell.

A convertible table is disclosed. The convertible table may comprise a tabletop, a plurality of supporting legs, a plurality of leg mounting tracks, and a table converting mechanism.

A lightweight beam structure includes a first and a second frame. The first frame includes an upper plate, two inner side plates downward bent and extended from two sides of the upper plate, two outer side plates upward bent and extended from two inner side plates respectively and two fixing plates bent and extended from two outer side plates respectively.

Each outer side plate is formed outside each inner side plate. A groove is formed between each inner side plate and each outer side plate. The second frame is connected with the first frame and includes a top plate and two intermediate plates downward bent and extended from two sides of the top plate. Each intermediate plate is received in each groove. The top plate is formed over the upper plate. Therefore, the stability is maintained and the weight is reduced so that the material costs may be decreased.

A retractable column structure includes a metal outer tubular member, a retaining bracket, and an inner tubular member. The outer tubular member includes a wall having outer, inner and end surfaces. The outer tubular member includes slots extending from the end surface to the inner surface. A rear end of each slot includes a hook protruding out of the inner surface. The retaining bracket includes a frame member abutted against the wall and locking hooks inserted into the inner surface and locked onto each corresponding hook. The inner tubular member moveably penetrates into the retaining bracket disposed between the tubular members and is concealed inside the outer tubular member. Accordingly, excellent support of inner and outer tubular members can be achieved for stable sliding therebetween.

The present application relates to a height-adjustable table including a table plate. a table leg is fixedly connected to a side surface of the table plate, two brackets are arranged oppositely on the side surface of the table plate, and a retaining plate is fixedly connected to opposite inner sides of the two brackets, respectively. A control box is provided, a retaining clip is fixedly connected to the control box, and the retaining clip is detachably connected to the retaining plate.

A variable height workstation system includes a base, a variable height platform, a lift mechanism, and a sensor arrangement. The lift mechanism is configured to move the variable height platform within a range of motion between a fully lowered position and a raised position. The sensor arrangement is operatively connected to the variable height platform. The sensor arrangement is configured to sense the position and movement of a user on, above and around the variable height platform for outputting data to determine how the user is positioned on, above and around the variable height platform in comparison to a predetermined target position.

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 lightweight electric desk stand includes a beam structure (10), a telescopic column (20) and a flank (30). The beam structure (10) includes a lower frame (11) and an upper frame (12). The lower frame (11) includes a bottom plate (111) and two risers (118) facing one another. The upper frame (12) includes a top plate (121) and two side plates (125) facing one another. The upper frame (12) is mounted on the lower frame (11). The side plate (125) and the riser (118) are connected to one another. The bottom plate (111) and the top plate (121) are spaced and facing one another. The telescopic column (20) is connected to two ends of the beam structure (10) and includes a motor (21). The flank (30) is disposed on an edge of the telescopic column (20) and covers an end of the beam structure (10).

The present invention relates to an improved height-adjustable table (1) which can assist and motivate the user to use the height-adjustable table in a manner which increases health, calorie burn and well-being. The table features a communication interface for connection of a user specific device providing the control with a set of user values for that specific guest user of the height-adjustable table in order to ease the configuration of the table to fit each individual user.