A folding chair includes a seat, a back, an interlinking device, a front leg, and a rear leg. The seat, the back, the interlinking device, the front leg, and the rear leg are interlinked. The seat includes at least one guiding portion, and the interlinking device includes at least one actuating member, which is movably coupled to the guiding portion. A user can fold or unfold the folding chair by a single-handed operation, such as pushing or pulling on the back or pulling a handle.

A collapsible table includes a tabletop, a first pair of collapsible legs, and a second pair of collapsible legs. The first pair of legs includes a first support bar for connecting a first leg to a second leg adjacent their top end portions, and the first support bar is pivotally connected to the bottom surface of the tabletop. The second pair of legs includes a second support bar for connecting a third leg to a fourth leg and a third support bar spaced apart from the second support bar for connecting the third leg to the fourth leg. One or more brackets are disposed adjacent the bottom surface of the tabletop and are positioned and configured to removably secure the second support bar to the bottom surface of the tabletop in a use position and removably secure the third support bar to the bottom surface in a storage position.

A collapsible table includes a tabletop, a first pair of collapsible legs, and a second pair of collapsible legs. The first pair of legs includes a first support bar for connecting a first leg to a second leg adjacent their top end portions, and the first support bar is pivotally connected to the bottom surface of the tabletop. The second pair of legs includes a second support bar for connecting a third leg to a fourth leg and a third support bar spaced apart from the second support bar for connecting the third leg to the fourth leg. One or more brackets are disposed adjacent the bottom surface of the tabletop and are positioned and configured to removably secure the second support bar to the bottom surface of the tabletop in a use position and removably secure the third support bar to the bottom surface in a storage position.

A folding chair comprising: a seat comprising a seat panel fixed to two seat supports, a backrest comprising a flexible backrest panel and two backrest supports having respective upper portions that engage respective side edges of said flexible backrest panel, a folding frame carrying the seat and the backrest and comprising a first structure including a pair of rear legs and a second structure including a pair of front legs, wherein the first structure and the second structure are articulated together about a first axis, a pair of joints each comprising a first half-coupling fixed to a respective rear leg and a second half-coupling fixed to a respective front leg, wherein the first half-coupling, the second half-coupling, and a respective seat support are rotatable relative to each other about said first axis, so that the first structure, the second structure and the seat are rotatable about said first axis between a position of use and a storage position.

A folding chair comprising: a seat comprising a seat panel fixed to two seat supports, a backrest comprising a flexible backrest panel and two backrest supports having respective upper portions that engage respective side edges of said flexible backrest panel, a folding frame carrying the seat and the backrest and comprising a first structure including a pair of rear legs and a second structure including a pair of front legs, wherein the first structure and the second structure are articulated together about a first axis, a pair of joints each comprising a first half-coupling fixed to a respective rear leg and a second half-coupling fixed to a respective front leg, wherein the first half-coupling, the second half-coupling, and a respective seat support are rotatable relative to each other about said first axis, so that the first structure, the second structure and the seat are rotatable about said first axis between a position of use and a storage position.

An auxiliary tool for surgery includes an auxiliary tool main body part, and a first leg pair located on the auxiliary tool main body part. A tail end of the first leg pair is connected to the auxiliary tool main body part, a first mounting part is formed at a front end of the first leg pair, and the first mounting part is configured to clamp and press a surgical device to place the surgical device in a predetermined position.

An auxiliary tool for surgery includes an auxiliary tool main body part, and a first leg pair located on the auxiliary tool main body part. A tail end of the first leg pair is connected to the auxiliary tool main body part, a first mounting part is formed at a front end of the first leg pair, and the first mounting part is configured to clamp and press a surgical device to place the surgical device in a predetermined position.

A chair operable between an extended configuration and a collapsed configuration includes one or more legs, a handle and a locking mechanism. The one or more legs support a seat and the handle extends away from the seat opposite the one or more legs. The locking mechanism includes a lock plug disposed in an elongate trough. Movement of the handle between the extended and collapsed configurations involves depressing the lock plug and flipping the trough to an opposite side of the lock plug.

A chair operable between an extended configuration and a collapsed configuration includes one or more legs, a handle and a locking mechanism. The one or more legs support a seat and the handle extends away from the seat opposite the one or more legs. The locking mechanism includes a lock plug disposed in an elongate trough. Movement of the handle between the extended and collapsed configurations involves depressing the lock plug and flipping the trough to an opposite side of the lock plug.

A foldable plastic-steel chair comprises a seat board assembly, a backrest, and a metal supporting frame. The seat board assembly and the backrest are connected to the metal supporting frame, and the seat board assembly comprises a seat board. The seat board comprises a surface plate and a surrounding edge connected to a periphery of the surface plate and extending downward, and the seat board is a vacuum-formed plastic board. The seat board assembly further comprises a metal frame abutting a periphery of seat board, and a bottom end of the metal frame is bent outward to form a hook. A lower end portion of the surrounding edge of the seat board is disposed in the hook, and a portion of the metal frame abuts an inner side of the surrounding edge. The hook is fixedly clamped to a lower edge of the surrounding edge.