Extraction guide device of drawer

Abstract

The invention discloses an extraction guide device of a drawer, which comprises two guiding units which are arranged the left and the right side of the drawer, wherein each guiding unit comprises a lower sliding rail, a middle sliding rail and an extraction sliding rail which are fastened sequentially from up to down, an idler wheel is arranged between the extraction sliding rail and the middle sliding rail, the idler wheel transmits a load between the extraction sliding rail and the middle sliding rail; a connecting device is arranged on the middle sliding rail of at least one guiding unit, with the help of the connecting device, the middle sliding rail and the extraction sliding rail are connecting at the end of a sliding path of the middle sliding rail and the extraction sliding rail when the drawer is about to be closed; an interspace is arranged the fastening part of the middle sliding rail and the lower sliding rail, a b-shaped ball base is arranged in the interspace, the interspace of the fastening part is filled with the ball base, the top of the ball base is provided with a lower walking plate, an upper walking plate is arranged on the extraction sliding rail; and a control wheel is arranged on the middle sliding rail, and rolls between the upper walking plate and the lower walking plate. The extraction guide device has the advantages of being compact in structure because micro interspaces exists among the three sliding rails, and solving the problem of poor stability among the sliding rails due to overlarge interspaces among the traditional sliding rails to ensure that the pulling process of the drawer is more stable.

Description

[0001] technical field [0002] The invention relates to a drawing-out guiding device for a drawer. [0003] Background technique [0004] Pull-out guide rails are usually set on both sides of the drawer. Its function is to make the drawer run smoothly under high-load conditions. There are two types of pull-out guide rails for existing drawers. One is ordinary pull-out guide rails, that is, double-layer guide rails. , The load is transmitted between the guide rails through the rollers. When the load of this guide rail is too large, the load on the rollers or some areas of the guide rails is often significantly increased, resulting in problems such as skewing of the drawer or interruption of the operation process; there are also drawers such as 97190114.7. The pull-out guide device uses rollers to convert the motion between the guide rails into the differential motion of the rollers between the guide rails, but its structure is complex, the cost is high, and the gap between ...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the existing drawer pull-out guide device has a complex structure and high cost, and the gap between the guide rails is too large, resulting in poor stability between the guide rails and an unstable pulling process of the drawer

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