Abstract: A shelf device includes a plurality of support legs each formed with a plurality of elongated through holes, and at least one shelf unit. Each through hole is defined by two long edges and two short edges. The at least one shelf unit includes a plurality of crosspiece assemblies, and a plurality of mounting members each having a head portion with two long sides. Each mounting member is rotatable relative to one of the support legs and the corresponding crosspiece assembly between first and second states, in which the long sides of the head portion thereof are parallel to and are transverse to the long edges of a corresponding elongated through holes so as to permit insertion of and prevent removal of the head portion into and out of the corresponding through hole, respectively.

Abstract: A shelf device includes a plurality of support units and a plurality of shelf units. Each of the support units includes a plurality of mounting holes. Each of the shelf units includes a plurality of insertion units, and a plurality of positioning members that are cooperatively mounted to the support units. Each of the insertion units includes at least one insertion member inserted into a corresponding one of the mounting holes. Each of the positioning members is sleeved on a neck portion of the insertion member of a respective one of the insertion units, and abuts against a head portions of the insertion member of the respective one of the insertion units and one of the support units to prevent the head portion of the insertion member from passing through the corresponding one of the mounting holes.

Abstract: A shelf device includes a plurality of support legs each formed with a plurality of elongated through holes, and at least one shelf unit. Each through hole is defined by two long edges and two short edges. The at least one shelf unit includes a plurality of crosspiece assemblies, and a plurality of mounting members each having a head portion with two long sides. Each mounting member is rotatable relative to one of the support legs and the corresponding crosspiece assembly between first and second states, in which the long sides of the head portion thereof are parallel to and are transverse to the long edges of a corresponding elongated through holes so as to permit insertion of and prevent removal of the head portion into and out of the corresponding through hole, respectively.

Abstract: A shelf unit includes four leg rods and two assembly mechanisms. The leg rods extend in an up-down direction, are spaced apart from each other, and are equally divided into two leg pairs. Each of the assembly mechanisms includes a first connecting subunit that is mounted to a top end of a respective one of the leg pairs, and a second connecting subunit that is mounted to a bottom end of the respective one of the leg pairs. One of the first and second connecting subunits of each of the assembly mechanisms has two engaging holes each of which is configured to be non-circular. The other one of the first and second connecting subunits of each of the assembly mechanisms has two through holes each of which corresponds in position to a respective one of the engaging holes of the assembly mechanism in the up-down direction.

Abstract: A modular rack assembly includes upright support legs, two first shelf units, and a second shelf unit. Each upright support leg has two spaced-apart first hole units, and a plurality of spaced-apart second holes disposed between the first hole units. The first shelf units are connected to the upright support legs through the first hole units. The second shelf unit is engaged to the second holes of the upright support legs which are at the same height, and includes a second shelf plate formed with insertion holes, and supporting members that are engaged to the second holes at the same height and that are inserted into the insertion holes to support the second shelf plate.

Abstract: An angle bar includes two longitudinal angled plate portions, and a corner portion connecting therebetween. The corner portion has an inner corner surface bounding an inner corner space and an outer corner surface. A stopper protrudes into the indented corner space, and has an abutment face extending across the indented corner space. A limiter protrudes into the indented corner space from the inner corner surface, and has a through hole opening in a direction along a bending line of the corner portion. A modular post assembly has at least two angle bars abutting each other, and a fixing rod extending through the through holes of the bars along the bending line and limited between the stoppers for fixing together the bars.

Abstract: A folding chair includes a seat, a front leg unit, a rear leg unit, at least one coupling rod unit, and a safety mechanism. The folding chair is convertible between a folded state and an unfolded state. When the folding chair is in the unfolded state, a blocking member of the safety mechanism is switchable between a locked state, in which the blocking member abuts against a first coupling rod for blocking movement of the at least one coupling rod unit to maintain the folding chair in the unfolded state, and an unlocked state, in which the first coupling rod is not obstructed by the blocking member, such that conversion of the folding chair to the folded state to the folded state is permitted.

Abstract: A folding chair includes a seat, a front leg unit, a rear leg unit, at least one coupling rod unit, and a safety mechanism. The folding chair is convertible between a folded state and an unfolded state. When the folding chair is in the unfolded state, a blocking member of the safety mechanism is switchable between a locked state, in which the blocking member abuts against a first coupling rod for blocking movement of the at least one coupling rod unit to maintain the folding chair in the unfolded state, and an unlocked state, in which the first coupling rod is not obstructed by the blocking member, such that conversion of the folding chair to the folded state to the folded state is permitted.

Abstract: A wire shelving assembly includes four legs, a crosspiece unit, and a deck member removably disposed on the crosspiece unit. The crosspiece unit includes two carrying crosspieces and a strengthening crosspiece. Each of the carrying crosspieces removably interconnects two of the legs, has a receiving groove, and is formed with a pair of first through holes. The strengthening crosspiece has two end segments, each of which is removably inserted into the receiving groove of a respective one of the carrying crosspieces, and is formed with two second through holes registered with the first through holes of the respective one of the carrying crosspieces.