[0004] Although the above-mentioned shelves can meet the storage requirements, they have the following disadvantages: First, in order to avoid deformation of the shelf during use (called deflection in the industry), it is usually in a spaced state in the length direction of the shelf and on the side facing down. A set of reinforcements are provided with fasteners, and the two ends of the reinforcements are matched with the bracket arms. This structural form has the problem of taking care of one thing and losing another. The
disadvantage is that it not only needs to consume a large amount of fasteners, but also needs to consume reinforcements, which will eventually lead to an increase in manufacturing and installation costs and affect the efficiency of manufacturing and
assembly. This can be confirmed by the aforementioned CN202287361U; second, in order to To ensure the connection effect between the arm rest and the column and to ensure the load-bearing effect on the shelf, a
hook plate is usually welded at the end where the arm rest is connected to the column, and a hook is formed on the
hook plate. The hook hole is matched (that is, hung in the preset hook hole on the column). This structure also has the aforementioned problem of taking care of one thing and losing the other, because
welding the
hook plate on the support arm not only needs to consume
welding materials such as
welding rods, but also invests in The human
workload is large, which eventually leads to an increase in cost and affects
manufacturing efficiency, which can be confirmed by the aforementioned CN202287153U; third, due to the large matching gap between the support arm and the column, specifically, because the support arm is through its The hook on the top is connected to the hook hole on the column, so the stability of the support arm is relatively poor, which can be confirmed by the aforementioned CN202302692U; Fourth, due to the need for reinforcement between adjacent columns by means of struts or connecting rods connection, so not only is it not simple and affects the view, but also consumes a lot of raw materials, which can be confirmed by the aforementioned CN202287359U
[0005] The "assembled shelf" recommended by China Invention Patent
Authorization Announcement No. CN103251241B largely compensates for the disadvantages that are not limited to the aforementioned patents. For details, please refer to
paragraph 0011 and paragraphs 0019 to 0029 of the patent specification, but there are still the following Disadvantages: First, because it is necessary to insert a shelf support truss that is generally n-shaped between a pair of columns at one end, and at the same time insert a substantially n-shaped truss between a pair of columns at the other end. The shelf support truss of the shelf is used to rest the two ends of the short side of the shelf on a pair of shelf support trusses, so the structure is complicated due to the use of the shelf support truss, which not only increases the
workload of manufacturing and
assembly, Moreover, it is economical and cheap; secondly, due to the limitation of the structure of the column itself, a pair of columns can only be connected with each other by means of the shelf support truss supported by the shelf. The more the number of shelves, the twice the The number of shelves has more shelf support trusses. For example, when a shelf is divided into four
layers, there are four shelves, and there are eight shelf support trusses (corresponding to one shelf at each end of a shelf. support truss)
Therefore, although the shelf support truss has the
dual function of supporting the shelf and connecting a pair of columns as a whole, many shelf support trusses objectively cause a waste of resources. However, if the shelf support truss is reduced quantity, then the shelf loses its support carrier
Undoubtedly, if the shelf can be connected to the column through the transition of the shelf hanging feet with reasonable structure and miniaturized volume, then the aforementioned deficiency can be made up for, but none of the Chinese and foreign patents and non-patent documents disclosed so far There is no corresponding technical inspiration