GRID STRUCTURE OF STORAGE RACK
Disclosed is a grid structure of a storage rack, and the storage rack has four corner pillars vertically disposed at four corner of the storage rack and edge frames coupled with each other to form a rectangular frame space, and at least one grid disposed in the frame space, and the edge frames and the grid are combined to form a carrying plane for carrying heavy objects, and the grid is formed by first wires and second wires staggered with one another, and the second wires are coupled to the bottom of the first wires. Each second wire has a sectional shape corresponsive to a positive force direction of the carrying plane and in a flat elliptical shape and an aspect ratio falling within a range of 1.5:1˜3.5:1. Therefore, the supporting effect while carrying heavy objects can be improved without increasing the weight of materials.
This non-provisional application claims priority under 35 U.S.C. § 119(a) on Patent Application No(s). 105214620 filed in Taiwan, R.O.C. on Sep. 29, 2016, the entire contents of which are hereby incorporated by reference.
FIELD OF THE INVENTIONThe present invention relates to the field of a multi-layer storage rack for carrying heavy objects, more particularly to a grid structure of a storage rack, and the structure uses a flat wire to provide the support force required for carrying heavy objects without increasing the total weight.
BACKGROUND OF THE INVENTION 1. Description of the Related ArtIn general, the structural design of a conventional combinational storage rack includes a plurality corner pillars disposed at four corners of the storage rack and a plurality of partition layers for dividing the storage rack into a plurality of layers to achieve the effect of maximizing the utility of the storage space to facilitate the classification of objects. Most of such combination storage racks have a plurality of combining holes formed on a surface of each corner pillar, and bolts are used to fix the partition layers with a spacing to the corner pillars, or brackets are used to mount the partition layers to the corner pillars for latching and positioning the partition layers, and such design is very suitable for general DIY users, and the packing volume before assembling can be reduced effectively to lower the shipping cost.
The partition layers are mainly divided into two following two types: (1) a hole plate is formed by punching holes directly on a metal sheet, and such hole plate does not require soldering for fixation, but the support strength is weaker and thus the hole plate is just suitable for storage racks that carry a light load; and (2) a grid board formed by soldering staggered metal wires to form a grid, and the metal wires may be arranged into one, two or even three layers depending on the required support strength, and the grid board is suitable for storage racks that carry different loads. However, such grid board formed by soldering layers of metal wires incurs high manufacturing cost and material cost, and the total weight becomes greater and the greater weight incurs a higher level of difficulty and a higher cost for the transportation. Obviously, the conventional storage racks require improvements.
2. Summary of the InventionTherefore, it is a primary objective of the present invention to overcome the drawbacks of the prior art by providing a grid structure of a storage rack, wherein metal wires for making the grid structure are manufactured into a flat elliptical shape instead of the traditional shape with a circular cross-section and configured to be corresponsive to the positive force direction while carrying heavy objects, so as to improve the supporting effect and provide a safe using environment to users. In addition, such manufacturing method does not increase the original total weight and can lower the transportation cost and facilitate users to move and assembly the storage rack by themselves.
To achieve the aforementioned objective, the present invention discloses a grid structure of storage rack, wherein the storage rack comprises four corner pillars vertically disposed at four corners of the storage rack respectively, a plurality of edge frames coupled to the corner pillars to form a rectangular frame space, and at least one grid disposed in the frame space, and the edge frames and the grid are combined to form a carrying plane for carrying heavy objects, and the grid is formed by a plurality of first wires and a plurality of second wires staggered with one another, and the first wires are parallelly disposed with a spacing from one another, and the second wires are parallelly disposed with a spacing from one another and at the bottom of the first wires, characterized in that each second wire has a sectional shape corresponsive to a positive force direction of the carrying plane and in a flat elliptical shape and an aspect ratio falling within a range of 1.5:1˜3.5:1, so that the supporting effect of the second wires can be improved while carrying heavy objects without increasing the weight of materials.
In a preferred embodiment, each second wire is a metal solid wire or a metal hollow tube, and the second wire is greater than or equal to the first wire. If the hollow tube is used, a lightweight effect can be achieved to facilitate the transportation and assembling of the product.
In addition, the second wires and the first wires are perpendicular to one another respectively, so that the first wires and the second wires may be staggered into a “” shaped structure, and the gaps among such structure can be adjusted to change the carrying effect of its use.
In another preferred embodiment of the present invention, the grid structure of a storage rack further comprises a plurality of third wires parallelly disposed with a spacing from one another and at the top of the first wire, so that the first wires are clamped between the second wires and the third wires to provide a better carrying effect. In addition, each third wire may be a metal solid wire or a metal hollow tube as well.
The third wires and the first wires are perpendicular to one another respectively, or the third wires and the second wires are installed symmetrically with respect to one another, or the third wires and the second wires are installed asymmetrically with respect to one another. The overall density can be changed to improve the strength.
It is noteworthy that each third wire has a sectional shape corresponsive to a positive force direction of the carrying plane and in a flat elliptical shape and an aspect ratio falling within a range of 1.5:1˜3.5:1. This range of aspect ratio is obtained after many experiments conducted by the inventor of the present invention. This aspect ratio varies with the diameter of a different wire used. For example, when the second wire with a smaller wire diameter is used, a smaller aspect ratio approximately equal to 1.5:1˜2:1 may be selected; and when the second wire with a larger wire diameter is used, a larger aspect ratio approximately equal to 2:1˜3.5:1 may be selected.
The above and other objects, features and advantages of this disclosure will become apparent from the following detailed description taken with the accompanying drawings.
With reference to
With reference to
With reference to
Claims
1. A grid structure of a storage rack, and the storage rack comprising four corner pillars vertically disposed at four corners of the storage rack respectively, a plurality of edge frames coupled to one another to form a rectangular frame space and disposed in the frame space, and the edge frames and the grid being combined to form a carrying plane for carrying heavy objects, and the grid being formed by a plurality of first wires and a plurality of second wires staggered with one another, and the first wires being parallelly disposed with a spacing from one another, and the second wires being parallelly disposed with a spacing from one another at the bottom of the first wires, characterized in that each second wire has a sectional shape corresponsive to a positive force direction of the carrying plane and in a flat elliptical shape and an aspect ratio falling within a range of 1.5:1˜3.5:1, so that the supporting effect of the second wires can be improved while carrying heavy objects without increasing the weight of materials.
2. The grid structure of a storage rack according to claim 1, wherein each second wire is a metal solid wire.
3. The grid structure of a storage rack according to claim 1, wherein each second wire is a metal hollow tube.
4. The grid structure of a storage rack according to claim 1, wherein the second wires and the first wires are perpendicular to one another.
5. The grid structure of a storage rack according to claim 1, further comprising a plurality of third wires parallelly installed with a space from one another on the top of the first wire, such that the first wires is clamped between the second wires and the third wires.
6. The grid structure of a storage rack according to claim 5, wherein each third wire is a metal solid wire.
7. The grid structure of a storage rack according to claim 5, wherein each third wire is a metal hollow tube.
8. The grid structure of a storage rack according to claim 6, wherein the third wires and the first wires are perpendicular to one another respectively.
9. The grid structure of a storage rack according to claim 7, wherein the third wires and the first wires are perpendicular to one another respectively.
10. The grid structure of a storage rack according to claim 8, wherein each third wire has a sectional shape corresponsive to a positive force direction of the carrying plane and in a flat elliptical shape, and an aspect ratio falling within a range of 1.5:1˜3.5:1.
11. The grid structure of a storage rack according to claim 9, wherein each third wire has a sectional shape corresponsive to a positive force direction of the carrying plane and in a flat elliptical shape, and an aspect ratio falling within a range of 1.5:1˜3.5:1.
Type: Application
Filed: Oct 5, 2016
Publication Date: Mar 29, 2018
Inventor: STEPHEN YU (TAOYUAN CITY)
Application Number: 15/285,487