Disclosed are adjustment mechanisms and structures including one or more adjustment mechanisms. An adjustment mechanism comprising a casing, first and second arms, a second arm, a button, and an elastic member. The first and second arms are movably disposed in a channel of the casing. The button is operably coupled with the first and second arms and selectively pushes a first end of the first arm out of a first side of the casing and a second end of a second arm out of a second side of the casing. The elastic member abuts the casing and button such that the button is held at a desired position and consequently the first and second arms are held at a desired state under normal conditions. The adjustment mechanisms of the present disclosure provide an easy, convenient and safe means for height or length adjustment.

A table includes a tabletop and a leg assembly to support the tabletop. The leg assembly includes first and second supports each movably connected with the table top. The leg assembly also includes an adjustable bar disposed substantially perpendicular to a height direction of the leg assembly. The adjustable bar has a first end connected with the first support and a second end connected with the second support such that changing a length of the adjustable bar changes a height of the leg assembly.

A table includes a tabletop and a leg assembly to support the tabletop. The leg assembly includes first and second supports each movably connected with the table top. The leg assembly also includes an adjustable bar disposed substantially perpendicular to a height direction of the leg assembly. The adjustable bar has a first end connected with the first support and a second end connected with the second support such that changing a length of the adjustable bar changes a height of the leg assembly.

Disclosed are adjustable bars and structures having adjustable bars. An adjustable bar includes an inner bar, an outer bar and a locking/unlocking mechanism to control relative movement of the inner and outer bars. The locking/unlocking mechanism includes a locking pin to be selectively inserted into a restriction hole of the outer tubular bar and a restriction member of the inner bar, thereby selectively restricting relative movement of the inner and outer bars in at least one direction. The locking/unlocking mechanism also includes a means to prevent accidental release of the locking pin from the restriction member. Structures having such adjustable bars are easy and safer to use.

A height adjustable desk or table comprising a desk or table top, and a frame with spaced apart legs for supporting the desk or table top, wherein each of the legs comprises a movable upper portion and a lower stationary portion, and wherein a first cable is guided via first guide means connected with a lower end of the movable upper portion of the first leg via second guide means to a lower end of the lower stationary portion of the second leg, and a second cable is guided via third guide means connected with a lower end of the movable upper portion of the second leg via fourth guide means to a lower end of the lower stationary portion of the first leg, wherein each of the legs comprises a gas spring, and wherein for each gas spring the upper portion of the gas spring is arranged to be up-and-down movable portion of the leg and the lower portion of each gas spring is arranged to be the lower stationary portion of the leg.

A height adjustable desk or table comprising a desk or table top, and a frame with spaced apart legs for supporting the desk or table top, wherein each of the legs comprises a movable upper portion and a lower stationary portion, and wherein a first cable is guided via first guide means connected with a lower end of the movable upper portion of the first leg via second guide means to a lower end of the lower stationary portion of the second leg, and a second cable is guided via third guide means connected with a lower end of the movable upper portion of the second leg via fourth guide means to a lower end of the lower stationary portion of the first leg, wherein each of the legs comprises a gas spring, and wherein for each gas spring the upper portion of the gas spring is arranged to be up-and-down movable portion of the leg and the lower portion of each gas spring is arranged to be the lower stationary portion of the leg.

An elevation working platform includes a lower support and an upper support. At least one group of X-type elevation mechanisms is provided between the lower support and the upper support. The elevation working platform further includes an elastic element. A first end of the elastic element is connected between two end points of a first support rod or a second support rod. A second end of the elastic element is connected to the lower support or a second hinging seat capable of sliding relative to the lower support. Using the X-type elevation mechanisms, the front and back positions of the upper support do not change in an elevating process of the upper support, the structure is simple and practical, and the cost is relatively low.

An elevation working platform includes a lower support and an upper support. At least one group of X-type elevation mechanisms is provided between the lower support and the upper support. The elevation working platform further includes an elastic element. A first end of the elastic element is connected between two end points of a first support rod or a second support rod. A second end of the elastic element is connected to the lower support or a second hinging seat capable of sliding relative to the lower support. Using the X-type elevation mechanisms, the front and back positions of the upper support do not change in an elevating process of the upper support, the structure is simple and practical, and the cost is relatively low.

A two-stage lock assembly comprising a multi-element lock tab configured for disposition in a lateral structure of a lock device. The multi-element lock tab may include a body that includes an end on which a first element and a second element are disposed. The first element may extend from the body farther than the second element to enable the first element to be introduced into a receiver prior to the second element. The multi-element lock tab may be configurable in a disengaged configuration in which the first element and the second element are not positioned in a receiver, a first engaged configuration in which the first element is positioned in the receiver and the second element is not, and a second engaged configuration in which the first and the second elements are positioned in the receiver.

A sink shelf organizer comprising two first connecting plates, two second connecting plates and two front support legs and two rear support legs, wherein the first connecting plates each comprises one comb structure, the second connecting plates each comprises a first comb structure for coupling with the first connecting plate and a second comb structure for coupling with the opposing second connecting plate, the first and second comb structures of the second connecting plate fixed together and substantially perpendicular to each other, the two first connecting plates and two second connecting plates are coupled together to form a telescopic U-shaped frame with two corners and two free ends.