Lifting desk

Abstract

The invention relates to a lifting desk which comprises a desktop, a beam, a lifting mechanism and a drive mechanism, wherein the lifting mechanism comprises a lifting vertical pillar, the lifting vertical pillar comprises an inner pipe, an outer pipe and a sliding device, the lifting vertical pillar is connected with the end portions of the beam through connecting devices, a first abrasion device and a second abrasion device are respectively installed on the outer surface of the upper end of the inner pipe and the inner surface of the lower end of the outer pipe, the first abrasion device comprises a first abrasion piece, and the first abrasion piece is installed on the inner pipe through a first abrasion piece holding frame; the second abrasion device comprises a second abrasion piece, the second abrasion piece is installed on the outer pipe through a second abrasion piece holding frame. The abrasion pieces between the outer pipe and the inner pipe of the lifting vertical pillar are installed through the abrasion piece holding frames, under the condition that sizes of the inner pipe and the outer pipe are not identical in different production batches, the abrasion piece holding frames and the abrasion piece are both used for making up errors, so that the abrasion piece are convenient to install and replace, and the lifting desk is suitable for large-scale production.

Description

technical field [0001] The invention relates to a table, in particular to a liftable table. Background technique [0002] With the wide application of desks in people's work, study and life, desks such as computer desks, desks, desks, etc. have brought us a lot of convenience. With the application needs of people, the comfort and convenience of desks are also required more and more Higher, in order to meet people's needs, height-adjustable tables are very popular, so height-adjustable tables appear. [0003] For example, the Chinese patent No. 200920026066.2 discloses an electric lift table, including a desktop, a motor, a cross bar, a vertical rod, a transmission shaft, etc., the cross rod is directly fixed with the vertical rod, and the vertical rod and the motor are connected by a drive shaft. The following defects generally exist in the existing lift tables: [0004] Lifting poles usually include an inner tube and an outer tube. In order to meet the load-bearing requi...

AI Technical Summary

Problems solved by technology

However, it is very difficult to ensure that the hexagonal transmission shaft is matched with the motor and the vertical pole at the same time. As long as the positions of the two vertical poles are slightly deviated during the installation process, it will cause trouble for the installation and low work efficiency. As the common shaft of the three, the transmission shaft can be seen from the force analysis during the transmission process. The middle position bears a large force, which may easily cause the transmission shaft to break due to the force, and there will be greater vibration, which will accelerate the damage of the transmission shaft. Even affect the work performance, the transfer efficiency is low

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