초록 ▼

A luggage truck includes a base frame fixedly fastened to a luggage body at the bottom, two parallel sleeves respectively pivoted to the base frame and joined by a transverse connecting bar, two sliding tubes respectively sliding in the sleeves and joined by a handle grip outside the sleeves, and tw

A luggage truck includes a base frame fixedly fastened to a luggage body at the bottom, two parallel sleeves respectively pivoted to the base frame and joined by a transverse connecting bar, two sliding tubes respectively sliding in the sleeves and joined by a handle grip outside the sleeves, and two sliding coupling devices moved on the sleeves and coupled to a locating frame at the rear side of the luggage body, each sliding coupling device including a sliding block mounted around one sleeve, a connector having a first coupling tube coupled to the sliding block and a second coupling tube extended from the first coupling tube at right angles, a first link having a hooked bottom end inserted into a through hole in the sliding block and hooked on the first coupling tube of the connector and a top end coupled to the handle grip, and a second link having one end pivoted to the locating frame of said luggage body and an opposite end connected to the second coupling tube of the connector.

대표청구항 ▼

[ What the invention claimed is:] [1.] A luggage truck comprising:a luggage body adapted for holding things, said luggage body having a locating frame fixedly secured to a rear side thereof near a top side thereof, at least one roller holder respectively and fixedly secured to a bottom side thereof

[ What the invention claimed is:] [1.] A luggage truck comprising:a luggage body adapted for holding things, said luggage body having a locating frame fixedly secured to a rear side thereof near a top side thereof, at least one roller holder respectively and fixedly secured to a bottom side thereof and holding a respective roller;a base frame fixedly secured to the bottom side of said luggage body and holding at least one roller for moving on the ground;a plurality of parallel sleeves respectively pivotally mounted on said base frame and pivotal on said base frame relative to the rear side of said luggage body;a plurality of sliding tubes joined by a handle grip outside said sleeves, and movable in and out of said sleeves; anda plurality of sliding coupling devices respectively mounted around said sleeves and coupled to said handle grip and the locating frame of said luggage body for permitting said sleeves to be moved between a tilted position in which said handle grip can be pushed with the hand to move the luggage truck on the ground, and a vertical position in which said sleeves and said handle grip are located adjacent to the rear side of said luggage body;wherein each of said sliding coupling devices comprises:a sliding block mounted around one sleeve and having a horizontal axle hole and a vertical through hole;a connector having a first coupling tube and a second coupling tube arranged at right angles, said first coupling tube being connected to the horizontal axle hole of one sliding block;a first link having a hooked bottom end inserted into the vertical through hole of said sliding block and hooked on the first coupling tube of said connector, and a top end coupled to said handle grip; anda second link having one end pivotally mounted on the locating frame of said luggage body, and an opposite end connected to the second coupling tube of said connector.