A folding crutch chair includes a pivot base unit and at least three support leg units. The pivot base unit has at least three mounting slots angularly spaced apart from one another about an axial line, and at least three pairs of joint portions respectively formed in the mounting slots. Each support leg unit includes a pivot seat, an outer tubular piece, and an inner tubular piece extending telescopically relative to the outer tubular piece. The pivot seat has a pair of pivot portions respectively and pivotably connected with the joint portions such that each support leg unit is rotatable relative to the pivot base unit. The support leg units are shiftable between a folded state and an unfolded state. The length of the support leg units is reduced when folded so as to facilitate packaging, storage and carrying.

A folding crutch chair includes a pivot base unit, a primary leg unit, at least two support leg units, a positioning unit and a seating unit. The leg units are mounted on the pivot base unit. The positioning unit is mounted on the primary leg unit, and has a mounting seat and a positioning member. The positioning member has a guiding slope surface. A seating member of the seating unit is shiftable between a collapsed position and a seated position. During the operation from the seated position to the collapsed position, the seating member is actuated to move the guiding slope surface to generate a retention force for keeping the seating member unmoved relative to the positioning member so as to facilitate the folding operation.

The present invention discloses a foldable crutch stool, including: a support assembly, including an upper support rod and a lower support rod, which are telescopic; a collapsing assembly; and a stool assembly with an upper end pivoted to a sliding base and a lower end pivoted to a positioning base via collapsible rods, wherein a bottom surface of a lower end of the stool assembly is provided with first snap-fit portions, the positioning base is provided with a connector which is provided with second snap-fit portions, and when the stool assembly is folded, the first snap-fit portions are snap-fitted with the second snap-fit portions.

A foldable chair includes a support unit, a sliding base, and a seat unit. The support unit includes a pivot base, a main support rod and two auxiliary support rods connected to the pivot base. The sliding base is sleeved on the main support rod. The seat unit includes a seating subunit connected to the sliding base. The seat unit further includes a linkage subunit that includes a first linkage rod connected to the pivot base, a second linkage rod connected to the first linkage rod and the sliding base, and a resilient member between the pivot base and the first linkage rod. The seating subunit is convertible between a folded state and an expanded state. The resilient member biases the end of the first linkage rod distal from the pivot base away from the main support rod.

The present invention discloses a foldable crutch stool, including: a support assembly, including an upper support rod and a lower support rod, which are telescopic; a collapsing assembly; and a stool assembly with an upper end pivoted to a sliding base and a lower end pivoted to a positioning base via collapsible rods, wherein a bottom surface of a lower end of the stool assembly is provided with first snap-fit portions, the positioning base is provided with a connector which is provided with second snap-fit portions, and when the stool assembly is folded, the first snap-fit portions are snap-fitted with the second snap-fit portions.

A foldable device includes a pivot base, three supporting rods, at least one folding rod unit, a linkage rod, and a pivot member that is located above the pivot base. The linkage rod has a pivot section that is pivotably connected to the pivot member, and a moving section that is opposite to the pivot section. The at least one folding rod unit is pivotably connected to one of the supporting rods. The moving section of the linkage rod is slidably mounted to the at least one folding rod unit. The at least one folding rod unit includes a folding rod that has a connecting section and a swing section, and that is movable relative to the one of the supporting rods between a folded position, in which the moving section of the linkage rod is adjacent to the swing section of the folding rod, and an expanded position.