Folding high chair

Abstract

A folding high chair has a seat assembly, a connection assembly, a support assembly and a rear stand assembly. The seat assembly has a seat and a backrest connecting pivotally to the seat. The connection assembly is mounted on the seat. The support assembly is mounted pivotally on the connection assembly. The rear stand assembly connects pivotally to the support assembly. The seat assembly, support assembly and rear stand assembly are substantially parallel to one another when the folding high chair is folded. Therefore, the folding high chair may be changed into a compact folded configuration convenient for carrying and storage.

1 . A folding high chair comprising:
 a seat assembly having
 a seat having an upper surface, a bottom surface, a front end, a rear end, two opposite sides and two armrests formed respectively on and protruding respectively from the upper surface at the sides; and 
 a backrest being mounted pivotally on the rear end of the seat, being capable of pivoting forward to fold onto the seat and having a front, a rear, a top end, a bottom end connecting pivotally to the rear end of the seat and a locking protrusion being formed on and protruding away from the rear at the bottom end; 
   a connection assembly being mounted securely on the bottom surface of the seat of the seat assembly and having
 a connection member being mounted on the bottom of the seat and having
 a bottom; 
 a rear end; 
 two opposite sidewalls and each sidewall having an inside surface; 
 a longitudinal recess defined in the bottom of the connection member between the inside surface of the sidewalls; and 
 multiple pairs of positioning notches, and the positioning notches of each pair being oppositely defined respectively in the inside surfaces of the sidewalls; and 
 
 a lock being mounted slidably on the connection member and having a top end and a resilient hook mounted on the top end of the lock and hooking detachably on the locking protrusion; 
   a support assembly being retractable, connecting pivotally to the connection member of the connection assembly and having
 an outer cylinder being hollow and having
 a top end; 
 a bottom end; 
 a mounting hole being defined axially in the top end of the outer cylinder; and 
 two opposite positioning blocks being formed on and protruding radially from the outer cylinder near the top end of the outer cylinder; 
 
 an inner cylinder mounted telescopically in the mounting hole of the outer cylinder and having a top end; and 
 a connecting element mounted on the top end of the inner cylinder, connecting pivotally to the connection member and having
 a pivot member formed on the connecting member, being mounted securely on the top end of the inner cylinder and being mounted rotatably in the longitudinal recess of the connection member between the inside surfaces of the sidewalls; and 
 a positioning member being mounted slidably on the connecting element, mounted in the recess in the connection member and having a rear end, two opposite sides and two opposite positioning projections formed oppositely on and protruding respectively from the sides of the positioning member and corresponding respectively to the pairs of positioning notches, wherein each positioning projection engages detachably with one of the positioning notches of a corresponding pair; and 
 
   a rear stand assembly being connected pivotally to the support assembly.   
   
   
       2 . The folding high chair as claimed in  claim 1 , wherein the rear stand assembly has
 a linkage being connected pivotally to the outer cylinder of the support assembly and having
 a connecting end being connected pivotally to the outer cylinder; 
 an engaging end; and 
 an engaging rod formed transversely on the engaging end and having two opposite ends; and 
   a rear stand being U-shaped, being connected pivotally to the engaging end of the linkage and having two opposite legs formed on the rear stand and each leg having
 an inside surface; 
 a pivot slot being defined in the inside surface of the leg, rotatably and detachably holding one end of the engaging rod on the linkage; and 
 multiple positioning slots being defined in the inside surface of the leg, arranged longitudinally and one of the positioning slots engaging detachably with one of the positioning blocks. 
   
   
   
       3 . The folding high chair as claimed in  claim 2 , wherein:
 each sidewall of the connection member is hollow and further has
 a chamber defined in the sidewall and having an inner surface; and 
 a guide slot being Y-shaped, defined in the inner surface of the chamber in the sidewall and having two branching slots; 
   the lock of the connection assembly further has two opposite abutment tabs mounted on the lock;   the connection assembly further has a biasing member being resilient and Y-shaped, mounted slidably in the guide slot and having
 a biasing branch being curved, extending slidably out of one branching slot and pressing against one of the abutment tabs on the lock to bias the lock in an upper position; and 
 a latch branch being straight and extending out of the other branching slot; and 
   each positioning projection of the positioning member of the connecting element is held selectively by one of the latch branches on the biasing members.   
   
   
       4 . The folding high chair as claimed in  claim 3 , wherein:
 the outer cylinder further has two opposite friction surfaces formed on the outer cylinder respectively adjacent to the positioning blocks and each friction surface having multiple friction ribs; and   the inside surface of each leg of the rear stand selectively contacts one of the friction surfaces.   
   
   
       5 . The folding high chair as claimed in  claim 3 , wherein the outer cylinder further has a foot formed transversely on the bottom end of the outer cylinder. 
   
   
       6 . The folding high chair as claimed in  claim 3 , wherein:
 the seat further has a crossbar mounted on the bottom of the seat near the front end; and   the seat assembly further has a leg rest mounted detachably on the crossbar on the seat and has
 multiple mounting slots being defined transversely through the footrest and arranged longitudinally; and 
   
     a footrest being detachably mounted perpendicularly in one of the mounting slots in the leg rest.