Height-adjustable rack

Abstract

The invention relates to a height-adjustable rack. The height-adjustable rack comprises a pair of lifting devices, a shelf and a synchronizing mechanism, wherein the two lifting devices are installedat the two sides of the shelf separately and connected through the synchronizing mechanism, and each lifting device comprises a shell body with a sliding cavity, as well as a lower guide rail, a cam and an upper guide rail which are installed in the sliding cavity; the lower guide rail is configured to be capable of horizontally sliding along the sliding cavity, limiting structures matched with each other are arranged on the inner walls of the upper guide rail and the sliding cavity, so that the upper guide rail can only slide up and down in the sliding cavity, and the cam is mounted between the upper guide rail and the lower guide rail and in rolling fit with the upper guide rail and the lower guide rail; a locking structure is also arranged on the shell body and used for locking the lower guide rail; the shelf is connected with the upper guide rail and keeps synchronous movement with the upper guide rail, and the synchronizing mechanism is connected with the lower guide rails of thetwo lifting devices and enables the two lower guide rails to keep synchronous movement. The rack is height-adjustable, simple in structure, good in bearing effect and low in manufacturing cost.

Description

technical field [0001] The invention relates to household appliances, in particular to a height-adjustable shelf. Background technique [0002] In order to improve the utilization rate of the internal space of the existing household refrigerators, special shelves are generally arranged inside the refrigerators. The shelves of ordinary refrigerators are generally inserted into the refrigerator liner in a pluggable way, and the height is determined by The position of the card slot is determined and cannot be adjusted. This results in that in some cases, due to the insufficient height reserved for the shelf, the items cannot be placed on the shelf smoothly. If the shelf is removed, space will be wasted . At present, some high-end refrigerators are equipped with electric shelves that can be lifted and lowered in the inner tank. For example, the Chinese invention patent application number: 201611037914.0 discloses a synchronization system for lifting and lowering refrigerator sh...

AI Technical Summary

Problems solved by technology

Although this patent solves the problem that the height of the shelf cannot be adjusted, the structure of the electric device is complicated, and because the inside of the refrigerator is prone to frost, it is easy to cause the failure of the lifting mechanism, the reliability of use is relatively low, and the manufacturing cost is high. trouble

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