Child carrier

Abstract

A child carrier includes a supporting frame, a sliding base, and a seat. The sliding base is disposed on the supporting frame and slidable in a substantially longitudinal direction of the supporting frame. The seat is foldably assembled with the sliding base. The seat includes a seat portion, a handrail base and a link member, and the link member, the seat portion, the handrail base and the sliding base cooperatively form a four bar linkage mechanism for performing a folding motion.

What is claimed is: 
     
         1 . A child carrier comprising:
 a supporting frame;   a sliding base disposed on the supporting frame and slidable in a substantially longitudinal direction of the supporting frame; and   a seat foldably assembled with the sliding base, the seat comprising a seat portion, a handrail base and a link member, and the link member, the seat portion, the handrail base and the sliding base cooperatively forming a four bar linkage mechanism for performing a folding motion relative to the sliding base.   
     
     
         2 . The child carrier of  claim 1 , wherein the seat portion is pivoted to the sliding base at a first pivot point, the handrail base is pivoted to the sliding base at a second pivot point located above the first pivot point, the link member is pivoted to the handrail base at a third pivot point located in front of the second pivot point, and the link member is pivoted to the seat at a fourth pivot point located under the third point. 
     
     
         3 . The child carrier of  claim 2 , wherein the first pivot point is located at an upper end of the seat portion, the second pivot point is located at a rear end of the handrail base, the third pivot point is located at a middle portion of the handrail base, and the fourth pivot point is located at a front end of the seat portion. 
     
     
         4 . The child carrier of  claim 2 , wherein the handrail base and the sliding base are located at left and right sides of the seat portion, the link member is a U-shaped structure having an opening facing upward, a top portion located at a left side of the U-shaped structure is pivoted to the handrail base at the left side of the seat portion, a top portion located at a right side of the U-shaped structure is pivoted to the handrail base at the right side of the seat portion, and a front end of the seat portion is pivotably disposed in the U-shaped structure. 
     
     
         5 . The child carrier of  claim 1 , wherein an engaging slot is formed on one of the seat portion and the sliding base, an engaging rail is formed on the other of the seat portion and the sliding base corresponding to the engaging slot, the engaging rail is disengaged from the engaging slot after the seat is folded up, and the engaging rail is engaged with the engaging slot after the seat is unfolded. 
     
     
         6 . The child carrier of  claim 5 , wherein the engaging rail or the engaging slot is located at a middle portion of a side wall of the seat portion facing the sliding base. 
     
     
         7 . The child carrier of  claim 1 , wherein the supporting frame is driven to be folded up when the sliding base slides upward along the supporting frame. 
     
     
         8 . The child carrier of  claim 7 , wherein the child carrier further comprises a blocking member, the blocking member is movably assembled with the sliding base to be movable at least between a blocking position and a releasing position, the sliding base is blocked in an upward direction when the blocking member is located at the blocking position, and the sliding base is able to slide upward when the blocking member is located at the releasing position. 
     
     
         9 . The child carrier of  claim 8 , wherein the blocking member is coupled to the supporting frame and an upper end of the sliding base to prevent the sliding base from sliding upward in the blocking position, and the blocking member is decoupled from the supporting frame and the sliding base to release the sliding base to be slidable upward in the releasing position. 
     
     
         10 . The child carrier of  claim 8 , wherein the seat is movable at least between a folding position and an unfolding position relative to the sliding base, the seat drives the blocking member from the releasing position to the blocking position when the seat is located at the unfolding position, and the seat is separate from the blocking member to make the blocking member switchable to the releasing position when the seat is switched to the folding position. 
     
     
         11 . The child carrier of  claim 8 , wherein an elastic sheet structure extends from the sliding base, the blocking member is formed on a free end of the elastic sheet structure, and the blocking member is switchable between the blocking position and the releasing position via elastic deformation of the elastic sheet structure. 
     
     
         12 . The child carrier of  claim 8 , wherein the blocking member is pivoted to the sliding base or the blocking member is slidably disposed on the sliding base. 
     
     
         13 . The child carrier of  claim 12 , wherein the blocking member rotates or slides leftward and rightward relative to the sliding base when the blocking member is switched between the blocking position and the releasing position. 
     
     
         14 . The child carrier of  claim 12 , wherein the child carrier further comprises a returning member having a tendency to drive the blocking member from the blocking position to the releasing position, and the returning member drives the blocking member to the releasing position when the seat is switched to the folding position. 
     
     
         15 . The child carrier of  claim 7 , wherein the supporting frame comprises:
 a foldable joint disposed on the supporting frame; and   a locking mechanism disposed on the foldable joint for selectively locking the foldable joint.   
     
     
         16 . The child carrier of  claim 15 , wherein the supporting frame comprises a first standing frame and a second standing frame, the foldable joint comprises a first fixed portion and a second fixed portion, the locking mechanism comprises a locking member and a releasing member, the second fixed portion is connected to the first fixed portion of the first standing frame on the foldable joint via a pivot shaft, the locking member is movably disposed between the first fixed portion and the second fixed portion to lock the supporting frame in a using position, and the releasing member is operable to move relative to the locking member and release the locking member from at least one of the first fixed portion and the second fixed portion. 
     
     
         17 . The child carrier of  claim 16 , wherein the child carrier further comprises:
 an unlocking driving member disposed on the sliding base;   wherein the unlocking driving member drives the locking mechanism to perform a release motion when the sliding base slides upward along the supporting frame.   
     
     
         18 . The child carrier of  claim 17 , wherein the unlocking driving member is a rib, a rod, a block, or a sheet; or wherein the supporting frame further comprises:
 a containing chamber disposed on the standing frame for containing the releasing member; and   a guiding slot communicated with the containing chamber, the guiding slot extending in a radial direction of the pivot shaft to be aligned with the unlocking driving member;
 wherein the unlocking driving member slides along the guiding slot to drive the releasing member to release the locking member from the locking portion when the sliding base slides upward along the supporting frame. 
   
     
     
         19 . The child carrier of  claim 15 , wherein the first fixed portion has a first rib formed thereon, the second fixed portion has a second rib formed thereon, and the first rib abuts against the second rib when first fixed portion and the second fixed portion are folded up to a predetermined position. 
     
     
         20 . The child carrier of  claim 19 , wherein the first rib is adjacent to a portion of the first fixed portion assembled with the first standing frame, and the second rib is adjacent to a portion of the second fixed portion assembled with the second standing frame.