Foldable chair

摘要

A foldable chair includes a support unit, a fold unit and a seat unit. The support unit includes a main stick having a positioning groove. The fold unit includes a connecting member connected to the main stick and an upper slider assembly movable along the main stick. The seat unit is connected to the upper slider assembly. The upper slider assembly is operable to engage the positioning groove for preventing the fold unit from converting between an unfolded state and a folded state, and to be disengaged from the positioning groove so as to permit the fold unit to convert between the unfolded and folded states.

主权项

1. A foldable chair, comprising:
a support unit including a main stick that extends along an axis, said main stick having a guide groove that is formed in an outer surrounding surface of said main stick and that extends in a longitudinal direction of said main stick, and a positioning groove that is formed in said outer surrounding surface, and that has a portion extending in a circumferential direction of said main stick and communicating spatially with said guide groove; a fold unit including a connecting member that is connected to said main stick, an upper slider assembly that is connected to said main stick, that is located above said connecting member, and that is movable along said main stick, and a fold bar that has a proximal end connected pivotally to said connecting member and a free end opposite to said proximal end, said fold unit being operable to convert between an unfolded state and a folded state such that, when said fold unit is converted from the unfolded state into the folded state, a distance between said upper slider assembly and said connecting member is increased and a distance between said free end of said fold bar and said main stick is reduced; and a seat unit having a proximal end portion that is connected to said upper slider assembly, and a distal end portion that is opposite to said proximal end portion, said seat unit forming an angle relative to said main stick, and being supported by said fold bar when said fold unit is in the unfolded state, said distal end portion of said seat unit being moved toward said main stick when said fold unit is converted into the folded state, said upper slider assembly including a slider member and a rotating member that is connected rotatably to said slider member, said rotating member being rotatable relative to said slider member about the axis between a locking position, where said rotating member engages said positioning groove for positioning said upper slider assembly relative to said main stick and said connecting member, so as to prevent conversion of said fold unit between the unfolded state and the folded state, and an unlocking position, where said rotating member is disengaged from said positioning groove, so as to permit the conversion of said fold unit between the unfolded state and the folded state.