Guide control mechanism for pneumatic lifting table

Abstract

The invention discloses a guide control mechanism for a pneumatic lifting table. The guide control mechanism comprises a table top supporting plate, a lower bottom plate, an upper fixing block, a lockable gas spring and a wedge-shaped switch, wherein the upper fixing block sleeves the lockable gas spring, the two ends of the lockable gas spring are connected with an upper connecting plate and a lower connecting plate respectively, and a first linear bearing sleeves a first linear unthreaded shaft and is installed in the upper fixing block. One end of the first linear unthreaded shaft is connected with the upper connecting plate, the other end of the first linear unthreaded shaft is provided with a first cylindrical spiral spring, an inner sleeve is connected with the lower bottom plate, and the lower connecting plate is covered with the inner sleeve. An outer sleeve is connected with the table top supporting plate, the upper connecting plate is covered with the outer sleeve, and the oblique wedge surface of the wedge-shaped switch can abut against a valve lift pin so that the outer sleeve can move relative to the inner sleeve in the direction away from or close to the lower bottomplate. The structure is compact, the guide precision is high, the lockable gas spring is smartly controlled by using the rotatable wedge-shaped switch, the cylindrical spiral springs solve the problemof impact generated when the lockable gas spring rises to the tail end, and due to the guide control mechanism, a table top more smoothly and steadily ascend and descend and is not likely to shake.

Description

technical field [0001] The invention relates to the technical field of household lifting equipment, and more specifically relates to a guiding control mechanism of a pneumatic lifting table. Background technique [0002] Pneumatic lifting mechanism is widely used in height-adjustable items such as beds, chairs, and tables. The main function is to move the load in a straight line through its own expansion and contraction. With the improvement of people's requirements for the quality of life, the home with lifting function will be developed by leaps and bounds. [0003] Pneumatic lifting tables on the market now generally use the inner and outer sleeves and the plane needle roller bearings matched with the inner sleeves to realize the guiding function. Because the inner and outer sleeves are extruded or rolled from aluminum or steel, the guide plane The accuracy is poor, the gap between the bushing and the needle roller is large, the desktop is easy to shake, and the size of ...

AI Technical Summary

Problems solved by technology

[0003] Pneumatic lifting tables on the market now generally use the inner and outer sleeves and the plane needle roller bearings matched with the inner sleeves to realize the guiding function. Because the inner and outer sleeves are extruded or rolled from aluminum or steel, the guide plane The accuracy is poor, the gap between the sleeve and the needle roller is large, the table is easy to shake, and the size of the needle roller needs to be assembled in stages, which is very inconvenient and the quality is not stable

The dynamic load capacity of the pneumatic lift tables on the market is relatively small, because once the support force of the gas spring is too large, there will be an impact phenomenon when the table rises to the top, causing the table to shake, which limits the further promotion of the pneumatic lift table

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