US 12,408,738 B2
Folding crutch chair with a folding auxiliary positioning mechanism
Chih-Ting Pao, Taichung (TW)
Assigned to STEP2GOLD CO., LTD., Taichung (TW)
Filed by STEP2GOLD CO., LTD., Taichung (TW)
Filed on Jun. 30, 2023, as Appl. No. 18/345,324.
Claims priority of application No. 111125755 (TW), filed on Jul. 8, 2022.
Prior Publication US 2024/0008605 A1, Jan. 11, 2024
Int. Cl. A45B 5/00 (2006.01); A47C 9/10 (2006.01)
CPC A45B 5/00 (2013.01) [A47C 9/105 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A folding crutch chair comprising:
a pivot base unit;
a primary leg unit and at least two support leg units mounted on said pivot base unit, each of said primary leg unit and said support leg units having a lower end portion, said primary leg unit and said support leg units being shiftable between a folded state, where said lower end portions are close to one another, and an unfolded state, where said lower end portions are remote from one another;
a positioning unit mounted on said primary leg unit, said positioning unit having a mounting seat which is secured on said primary leg unit, and a positioning member which is movably mounted on said mounting seat, said mounting seat having a lower end and an upper end which are opposite to each other along a longitudinal direction of said primary leg unit, said positioning member having a guiding slope surface which extends from one end proximal to said lower end to the other end proximal to said upper end and is gradually inclined away from said mounting seat, said guiding slope surface being actuated to be moved relative to said mounting seat and being biased to return back to its original position; and
a seating unit having a sliding bracket which is slidably sleeved on said primary leg unit, and a seating member which is connected with said sliding bracket and supported by said support leg units, said seating member having a seating surface, and being shiftable between a collapsed position, where said seating surface of said seating member is close to and extends parallel to said primary leg unit when said primary leg unit and said support leg units are in the folded state, and a seated position, where said seating surface is remote from and extends transverse to said primary leg unit when said primary leg unit and said support leg units are in the unfolded state, wherein, said seating member makes a sliding movement along said guiding slope surface, during shifting of said seating member from the seated position to the collapsed position, to actuate and move said guiding slope surface relative to said mounting seat so as to generate a retention force for keeping said seating member unmoved relative to said positioning member.