The invention relates to a column that can be calibrated, in particular for a piece of furniture, wherein the column 100, 101 that can be calibrated has a stationary part 4, at least one movable part 2, 3, and a calibrating means 6, 13, 14, and the movable part 2, 3 can be transferred from a retracted state to a plurality of extended states, and wherein a calibration position of the column 100, 101 coincides with the position of the movable part 2, 3 in an extended state. Such a column can be used in a piece of furniture as an extendable column.

A tool cabinet includes a cabinet body having two guide rails, a movable working platform unit having two extension members that are respectively coupled to the guide rails, two lifting units, and a driving unit. Each extension member has an inner coupling hole. Each lifting unit has a support member, a threaded rod, and a threaded member movably and threadedly engaging the threaded rod. Rotation of the threaded rods results in the movement of the working platform unit between lowered and lifted positions. When the working platform unit is arrested in the middle of being driven from the lifted position to the lowered position while the driving unit continues to operate, the rotation of the threaded rod drives the threaded member to slide away from the support member.

A tool cabinet includes a cabinet body having two guide rails, a movable working platform unit having two extension members that are respectively coupled to the guide rails, two lifting units, and a driving unit. Each extension member has an inner coupling hole. Each lifting unit has a support member, a threaded rod, and a threaded member movably and threadedly engaging the threaded rod. Rotation of the threaded rods results in the movement of the working platform unit between lowered and lifted positions. When the working platform unit is arrested in the middle of being driven from the lifted position to the lowered position while the driving unit continues to operate, the rotation of the threaded rod drives the threaded member to slide away from the support member.

A variable height platform system comprises a tabletop, a frame assembly for supporting the tabletop, a drive mechanism, a sensor, and a controller. The drive mechanism is configured to set a height of the frame assembly and the tabletop in an elevated position for use. The sensor is configured to sense position and movement of a user in a predetermined area including an area of the variable height platform system and an area proximate the variable height platform system. The controller is operatively connected to the sensor and drive mechanism. The controller is configured to operate the drive mechanism in response to the sensor sensing the position and movement of the user in the predetermined area.

A variable height platform system comprises a tabletop, a frame assembly for supporting the tabletop, a drive mechanism, a sensor, and a controller. The drive mechanism is configured to set a height of the frame assembly and the tabletop in an elevated position for use. The sensor is configured to sense position and movement of a user in a predetermined area including an area of the variable height platform system and an area proximate the variable height platform system. The controller is operatively connected to the sensor and drive mechanism. The controller is configured to operate the drive mechanism in response to the sensor sensing the position and movement of the user in the predetermined area.

A linear actuator comprising a spindle-based linear drive (1) having an inner threaded spindle (5) and an outer element (2) surrounding the threaded spindle (5), in which the threaded spindle (5) can be moved in the axial direction; and a telescopic housing (20) with a first telescope part (21) and a second telescope part (22), which is surrounded at least in part by the first telescope part (21). On its side facing the first telescope part (21), the second telescope part (22) has an adapter part (24) that is connected rotationally fixedly to the second telescope part (22) and has a central opening. The linear drive has a connecting element (30) that is mounted on the outer element (2) and comprises snap elements (31) that are engaged with the central opening of the adapter part (24) in such a manner that the connecting element (30) is held in the adapter part (24).

A linear actuator comprising a spindle-based linear drive (1) having an inner threaded spindle (5) and an outer element (2) surrounding the threaded spindle (5), in which the threaded spindle (5) can be moved in the axial direction; and a telescopic housing (20) with a first telescope part (21) and a second telescope part (22), which is surrounded at least in part by the first telescope part (21). On its side facing the first telescope part (21), the second telescope part (22) has an adapter part (24) that is connected rotationally fixedly to the second telescope part (22) and has a central opening. The linear drive has a connecting element (30) that is mounted on the outer element (2) and comprises snap elements (31) that are engaged with the central opening of the adapter part (24) in such a manner that the connecting element (30) is held in the adapter part (24).

A lifting device with a cable management is provided. The lifting device includes: an outer pipe, an actuation mechanism, a linkage member, a cable, and a cable management component. The actuation mechanism is accommodated in the outer pipe and has a motor and a screw rod. The linkage member is accommodated in the outer pipe and mutually screw-fitted with the screw rod to operate, and moves relative to the outer pipe. The cable has a spiral coiled cable unit. A shaft core line in parallel with the screw rod is defined by the spiral coiled cable unit. The cable management component is disposed in the outer pipe and in parallel to the shaft core line. The spiral coiled cable unit is reeled on the cable management component. Accordingly, the cable may be stably positioned and the cable may be prevented from rubbing or being tangled with the screw rod.

A lifting device with a cable management is provided. The lifting device includes: an outer pipe, an actuation mechanism, a linkage member, a cable, and a cable management component. The actuation mechanism is accommodated in the outer pipe and has a motor and a screw rod. The linkage member is accommodated in the outer pipe and mutually screw-fitted with the screw rod to operate, and moves relative to the outer pipe. The cable has a spiral coiled cable unit. A shaft core line in parallel with the screw rod is defined by the spiral coiled cable unit. The cable management component is disposed in the outer pipe and in parallel to the shaft core line. The spiral coiled cable unit is reeled on the cable management component. Accordingly, the cable may be stably positioned and the cable may be prevented from rubbing or being tangled with the screw rod.

Provided is a brake device for braking a rotational movement of a shaft about the longitudinal axis, wherein the shaft is mounted so as to be rotatable about the longitudinal axis in a direction of rotation and in a counter direction which opposes the direction of rotation. Brake devices typically use constant and relatively high braking torques, to ensure a controlled movement of a movement portion, braked by the brake device, in every situation. However, this increases the energy consumption for a movement of the movement portion, and the wear of the brake device. A brake device equipped with a setting device for mutually opposing setting of a braking torque on the shaft during rotation of the shaft in the direction of rotation, and a counter braking torque during rotation of the shaft in the counter direction is provided. Also provided is a method for controlling a brake device.