The invention belongs to the field of accessories of business tables in automobiles, and particularly relates to a multistage lifting locking device for a lifting column of a business table in an automobile. The multistage lifting locking device comprises pneumatic telescopic rods, an air pump, an air hose, a lifting column inner column and a lifting column outer column, wherein the pneumatic telescopic rods are arranged at a position from which a distance from the bottom of the lifting column inner column to the bottom surface of the lifting column inner column exists; the front ends of the pneumatic telescopic rods extend out of the lifting column inner column; the air pump is arranged at the bottom of the lifting column; the air hose is communicated with the pneumatic telescopic rods and the air pump; multiple groups of bayonets at different heights are arranged on the body of the lifting column outer column; the sizes of the bayonets are matched with those of the pneumatic telescopic rods. By adopting the multistage lifting locking device, the lifting column can be locked at different heights stably, the table board of the business table can be stopped at different heights in a suspended manner, and the multistage lifting locking device has higher bearing capacity.
Multistage lifting locking device for lifting column of business table in automobile
2015-06-17
Patent
Electronic Resource
English
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