Walking stick chair

Abstract

A walking stick chair includes a main stick, a seat unit, a support unit, and a linking unit. The seat unit includes an upper slider member connected slidably to the main stick and movable between first and second positions, and a seat member connected pivotally to the upper slider member. The support unit is connected pivotally to the main stick. The linking unit is connected pivotally to the support unit and the seat unit. When the upper slider member is at the second position, the walking stick chair is at an unfolded state. When the upper slider member moves from the second position to the first position, the walking stick chair is converted from the unfolded state to a folded state.

What is claimed is: 
     
         1 . A walking stick chair, comprising:
 a main stick having
 an elongated rod body that has opposite upper and lower ends, 
 a handle portion that is connected to said upper end of said rod body, and 
 a foot portion that is connected to said lower end of said rod body; 
   a seat unit including
 an upper slider member that is connected slidably to said rod body and that is movable along said rod body between a first position and a second position, said second position being distal from said handle portion, said first position being located between said handle portion and said second position, and 
 a seat member that is connected pivotally to said upper slider member; 
   a support unit having a pivoted end portion that is connected pivotally to said rod body under said upper slider member of said seat unit, and a free end portion opposite to said pivoted end portion; and   a linking unit disposed between and connected pivotally to said support unit and said seat unit;   wherein, when said upper slider member is at the second position, said seat member is at an unfolded state where said seat member and said rod body form an angle, and said support unit is at an unfolded state where said free end portion of said support unit is away from said rod body and cooperates with said foot portion for contacting ground; and   wherein, when said upper slider member moves upwardly from the second position to the first position, said seat member pivots downwardly and toward said rod body to move to a folded state, and said linking unit is driven to move upwardly to actuate said support unit to pivot upwardly to a folded state where said free end portion is close to said rod body.   
     
     
         2 . The walking stick chair as claimed in  claim 1 , further comprising a positioning unit including an abutment member that is connected immovably to said rod body under said upper slider member, said linking unit including a linking member that has a driven portion connected pivotally to said seat unit, and a driving portion connected pivotally to said support unit, said pivoted end portion being positioned relative to said rod body by said abutment member. 
     
     
         3 . The walking stick chair as claimed in  claim 2 , wherein said pivoted end portion of said support unit is connected pivotally to said abutment member, said driven portion of said linking unit being connected pivotally to one of said upper slider member and said seat member. 
     
     
         4 . The walking stick chair as claimed in  claim 2 , wherein said positioning unit further includes
 a middle slider member that is connected slidably to said rod body and that is disposed between said abutment member and said upper slider member, said pivoted end portion of said support unit being connected pivotally to said middle slider member, said middle slider member abutting against said abutment member when said upper slider member is at the second position, said driven portion of said linking unit being connected pivotally to one of said upper slider member and said seat member.   
     
     
         5 . The walking stick chair as claimed in  claim 2 , wherein said seat unit further includes a linkage set that is disposed between and connected pivotally to said seat member and said positioning unit, said linkage set pivoting toward said rod body when said upper slider member is moved to the first position, said linkage set pivoting away from said rod body when said upper slider member is moved to the second position, said driven portion of said linking unit being connected pivotally to one of said upper slider member and said seat member. 
     
     
         6 . The walking stick chair as claimed in  claim 5 , wherein said linkage set is connected pivotally to said abutment member, said pivoted end portion of said support unit being connected pivotally to said abutment member. 
     
     
         7 . The walking stick chair as claimed in  claim 5 , wherein said positioning unit further includes a middle slider member that is connected slidably to said rod body and that is disposed between said abutment member and said upper slider member, at least one of said linkage set and said pivoted end portion of said support unit being connected pivotally to said middle slider member, said middle slider member abutting against said abutment member when said upper slider member is at the second position. 
     
     
         8 . The walking stick chair as claimed in  claim 7 , wherein said linkage set is connected pivotally to said abutment member, said pivoted end portion of said support unit being connected pivotally to said middle slider member. 
     
     
         9 . The walking stick chair as claimed in  claim 7 , wherein said linkage set is connected pivotally to said middle slider member, said pivoted end portion of said support unit being connected pivotally to said abutment member. 
     
     
         10 . The walking stick chair as claimed in  claim 7 , wherein said linkage set is connected pivotally to said middle slider member, said pivoted end portion of said support unit being connected pivotally to said middle slider member. 
     
     
         11 . The walking stick chair as claimed in  claim 4 , wherein said positioning unit further includes a resilient member connected between said middle slider member and said rod body for biasing said middle slider member toward said abutment member. 
     
     
         12 . The walking stick chair as claimed in  claim 2 , wherein said seat unit further includes a resilient member connected between said upper slider member and said rod body for biasing said upper slider member toward said foot portion. 
     
     
         13 . The walking stick chair as claimed in  claim 1 , wherein said rod body is formed with a groove extending in an outer surface of said rod body in a longitudinal direction of said rod body. 
     
     
         14 . The walking stick chair as claimed in  claim 13 , wherein said upper slider member has a guide block engaging slidably said groove. 
     
     
         15 . The walking stick chair as claimed in  claim 2 , wherein said support unit includes at least one support leg that has an upper leg component and a lower leg component, said upper leg component having said pivoted end portion, said lower leg component having said free end portion and being connected pivotally to said upper leg component oppositely of said pivoted end portion, said driven portion of said linking unit being connected pivotally to one of said upper slider member and said seat member, said driving portion of said linking member being connected pivotally to said upper leg component at a pivot point between said pivoted end portion and said lower leg component. 
     
     
         16 . The walking stick chair as claimed in  claim 15 , wherein said support unit further including a sub-leg component that is substantially parallel to said upper leg component that has one end connected pivotally to said driving portion of said linking member and an opposite end connected pivotally to said lower leg component. 
     
     
         17 . The walking stick chair as claimed in  claim 4 , wherein:
 said support unit includes at least one support leg that has an upper leg component and a lower leg component, said upper leg component having said pivoted end portion, said lower leg component having said free end portion and being connected pivotally to said upper leg component oppositely of said pivoted end portion, said driven portion of said linking member being connected pivotally to said seat unit, said driving portion of said linking member being connected pivotally to said upper leg component at a pivot point between said pivoted end portion and said lower leg component;   said positioning unit further includes
 a lower slider member connected slidably to said rod body and disposed between said middle slider member and said foot portion, and 
 a connecting rod interconnecting co-movably said lower slider member and said middle slider member; and 
   said support unit further includes an auxiliary linkage having opposite ends connected pivotally and respectively to said lower slider member and said lower leg component.   
     
     
         18 . The walking stick chair as claimed in  claim 17 , wherein said abutment member of said positioning unit is configured as a block protruding from an outer surface of said rod body, said lower slider member having a passage groove adjacent to said outer surface of said rod body, said passage groove moving past said abutment member to permit said lower slider member to slide over said abutment member when said upper slider member moves toward said handle portion of said main stick. 
     
     
         19 . The walking stick chair as claimed in  claim 2 , wherein said linking member has an upper end serving as said driven portion and pivoted to said seat unit, and a lower end serving as said driving portion and pivoted to said support unit at a pivot point between said pivoted end portion and said free end portion of said support unit, a length of said linking member being larger than a distance between said lower end of said linking member and said pivoted end portion of said support unit. 
     
     
         20 . The walking stick chair as claimed in  claim 5 , wherein said positioning unit further includes
 a pair of middle slider members that are connected slidably to said rod body and that are disposed one above the other and between said abutment member and said upper slider member, said linkage set and said pivoted end portion of said support unit being connected pivotally and respectively to said middle slider members, and wherein, when said upper slider member is at the second position, a lower one of said middle slider members abuts against said abutment member, and an upper one of said middle slider members abuts against said lower one of said middle slider members.   
     
     
         21 . The walking stick chair as claimed in  claim 20 , wherein said positioning unit further includes a resilient member connected between said upper one of said middle slider members and said rod body for biasing said upper one of said middle slider members toward said abutment member. 
     
     
         22 . The walking stick chair as claimed in  claim 2 , wherein:
 said driven portion of said linking unit being connected pivotally to one of said upper slider member and said seat member;   said support unit includes at least one support leg that has said pivoted end portion and said free end portion provided respectively at opposite ends thereof;   said positioning unit further includes a lower slider member connected slidably to said rod body and disposed between said upper slider member and said foot portion; and   said support unit further includes an auxiliary linkage having opposite ends connected pivotally and respectively to said lower slider member and said support leg.