Patent ID: 8047479

Claim:
An elevating device with latching function, comprising: a supporting rack being provided with a vertical foundation sheet, said vertical foundation sheet having two lateral ends provided with a pair of retaining rails and the top end of the foundation sheet is connected to a spring seat; a supporting seat being provided with a seat rack, said seat rack having two lateral ends provided with a pair of mobile rails sleeved in the pair of retaining rails, and a resilient shaft rod capable of automatically recovering towards a central line thereof is protrudingly provided to the seat rack; a constant force spring having a coil portion provided on the spring seat and a jointing portion of a free end thereof being connected to the supporting seat; and a latching member being installed at the bottom end of the foundation sheet and an arrow-shaped positioning block that is oblique with respect to the shaft rod is installed on the front end of the latching member, two planes defining the acute angle of the positioning block are respectively defined as a first guiding plane and a second guiding plane, and a positioning concave slot is formed at the bottom ends of the two guiding planes; when the shaft rod is moved with the supporting seat in the supporting rack, the shaft rod is able to be downwardly moved along the first guiding plane to enter the positioning concave slot for forming a latching status; when the shaft rod is again downwardly moved in the positioning concave slot, the shaft rod is released from the positioning concave slot for forming a releasing status, and the shaft rod is able to be upwardly moved along the second guiding plane; wherein a connecting mechanism is further provided, a pivotal shaft is retained on the seat rack and the pivotal shaft passes a shaft hole of a connecting member and is connected with an end sealing member, so the connecting member is able to be rotated with respect to the supporting seat; the connecting member is provided with a plurality of connecting holes.