A height-adjustable desk

By using a dual-stage synchronous lifting structure and a worm gear transmission system, the problems of small adjustment range and slow speed of existing height-adjusting desks have been solved, achieving fast and stable desktop height adjustment.

CN224420394UActive Publication Date: 2026-06-30HANGZHOU DECHANG HARDWARE FURNITURE
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HANGZHOU DECHANG HARDWARE FURNITURE
Filing Date
2025-07-07
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing height-adjustable desks only have a single-stage height adjustment mechanism, resulting in a small height adjustment range and slow speed, which cannot meet the needs of human sitting posture under different functional attributes.

Method used

It adopts a dual-stage synchronous lifting structure, which uses a motor-driven worm gear transmission system to drive the threaded engagement of the active threaded rod and the transition threaded rod to achieve rapid dual-stage lifting of the table legs, and is equipped with a self-locking function to maintain the height.

Benefits of technology

The adjustable range of the table height has been expanded, the lifting speed has been improved, and a self-locking function has been added, making it convenient and efficient to adjust and maintain the table height.

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Abstract

This utility model discloses a height-adjustable desk, relating to the field of height-adjustable desk technology. It includes a tabletop mounting frame and several table legs. The table legs are mounted under the tabletop mounting frame. A drive threaded rod is rotatably mounted on the tabletop mounting frame. Each table leg includes a base, on which a base outer shell is fixedly mounted. The table leg also includes a top outer shell fixed to the tabletop mounting frame. A transition outer shell is fitted inside the base outer shell. The top outer shell is fitted inside the transition outer shell. A fixing limiting sleeve is fixedly mounted on the base within the base outer shell. A fixing limiting nut is provided at the top of the fixing limiting sleeve. A transition screw is internally threaded onto the fixing limiting nut. An annular protrusion is fixedly mounted at the bottom of the transition outer shell. A top mounting sleeve is fixedly mounted on the annular protrusion inside the transition outer shell. The top of the top mounting sleeve is a top mounting block, on which a top nut is provided. The drive threaded rod is threadedly engaged with the top nut.
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