Abstract: A hidden handle device of a trunk is disclosed. Two inner tubes are inserted into the outer tubes fixed on the trunk. A handle is installed on the upper end of the inner tubes and an inner rim is formed between the handle and the inner tube. By a button, a pillar on the side wall of the inner tube can be controlled to telescopically move in order to determine whether it is buckled on the hole formed on the outer tube. A fixing seat with a concave portion is installed on the upper ends of the outer tubes. The opposite two sides of the concave portion are installed with respective through holes and each of the through holes is installed with respective containing chamber. Elastic elements and ejecting elements are sequentially arranged win the containing chambers. Thereby, when the handle is pushed downwards so that the handle is received with the concave portion of the fixing seat, and the aforementioned pillars is buckled in the holes of the outer tubes, the ejecting elements will press the elastic elements.

Abstract: A luggage trolley structure includes a wheeled base to which two upright bars are mounted, each having three telescoping sections, an upper section, an intermediate section and a lower section. A telescoping mechanism is provided within each of the bars. The telescoping mechanism includes a slide movably received within the upper section of upright bar and connected to a manually movable member to be moved thereby. The slide has a slot of gradually increasing depth within which a spherical member is received so that by the inclination of the slot, when the slide is moved relative to the upper section, the spherical member is forced to project through a hole formed the intermediate section and a hole formed on the upper section so as to retain them at the expanded position.