Lifting desk and chair

• Main Author: LI JIECHENG
• Format: Patent
• Language: Chinese; English
• Published: 19.05.2020
• Subjects: BEDS; CABINETS; CHAIRS; COFFEE MILLS; DESKS; DOMESTIC ARTICLES OR APPLIANCES; DRAWERS; FURNITURE; GENERAL DETAILS OF FURNITURE; HUMAN NECESSITIES; OFFICE FURNITURE; SOFAS; SPICE MILLS; SUCTION CLEANERS IN GENERAL; TABLES

A lifting desk comprises a desktop, a base and a lifting mechanism. The lifting mechanism comprises a sleeve, an upper screw rod and a lower screw rod; the sleeve is up-down through; the upper screw rod extends into the sleeve from the top end of the sleeve and is in threaded connection with an upper port of the sleeve; the lower screw rod extends from the bottom end of the sleeve and is in threaded connection with the lower port of the sleeve; the lower screw rod is hollow, and the upper screw rod can extend into the lower screw rod; a first clamping structure is arranged in the sleeve closeto the top; a second clamping structure is arranged at the bottom end of the upper screw rod; the second clamping structure is matched with the first clamping structure when rising to the top of the sleeve in a rotating mode, and the sleeve rotates along with the upper screw rod; when the sleeve descends to the top end of the lower screw rod and abuts against the first clamping structure, the first clamping structure is s