Shipping Rack

This application is related to co-pending application Ser. No. 926,275, filed 11-3-86, entitled "Shipping Unit".

1. Field of the Invention

This invention relates to a shipping rack having cloth shelves to prevent damage to easily damaged articles of manufacture.

2. Prior Art

Racks of the type to which the present invention relates are intended to supplant shipping constructions used in the past for shipping articles of manufacture which are easily damaged. For example, in automotive manufacturing processes, some body panels are frequently manufactured into components at one location, either within an assembly plant or remotely located with respect to an assembly plant, and require shipment from the point of manufacture to the point of assembly. One example of such an article of manufacture is door trim panels. Door trim panels are manufactured as components which are ready for mounting on a car or truck. The surface areas are finished and ready for painting. Consequently, door trim panels must be safeguarded from being scratched, dented or otherwise damaged after they are manufactured and before they are mounted on a vehicle. If a door trim panel is damaged, it must be reworked entailing additional expense.

Previously, objects such as door trim panels have been transported by use of relatively expensive techniques. Cardboard has been used to individually box such items. Obviously, such individual boxing with subsequent opening of the box and disposal of the cardboard material is costly. Other techniques have involved the use of expensive shipping containers having buffered compartments, the buffers being made of rubber or like material which is relatively expensive and space-consuming resulting in higher shipping costs.

In accordance with the present invention, a shipping rack is provided which is easily loaded or unloaded and which uses relatively inexpensive cloth for shelving. The cloth is thin and therefore does not take up very much shipping space. The cloth is relatively inexpensive thus resulting in a low cost construction and low cost replacement of the shelves. This is all accomplished in a rack structure which is easy to move about either by means of a fork lift truck or by manual pushing.

A shipping rack is provided which protects easily damaged articles of manufacture during transit. The rack comprises a bottom wall having a width and length. An upstanding end wall is provided at each end of the length of the bottom wall. At least one tier of a plurality of vertically spaced apart shelves is suspended between the end walls. The shelves are accessible along the length of the rack for loading and unloading articles of manufacture transversely of the rack. The shelves are fabricated of a pliable stretchable cloth. The vertical distance between each pair of vertically adjacent shelves is slightly greater than the thickness of the article of manufacture to be loaded thereon to result in, with respect to a pair of vertically adjacent shelves, stretching of the superjacent shelf when an article of manufacture is loaded thereon into contact with an article of manufacture which is loaded onto the subjacent shelf.

A vertically extending panel is provided at each lengthwise end of the tier of shelves to prevent lengthwise movement of articles of manufacture which are loaded onto the shelves. A pair of transversely spaced apart vertical uprights are provided at each end of the length of the tier of shelves. A plurality of transversely extending vertically spaced apart rods are provided between each pair of transversely spaced apart vertical uprights. Each shelf is secured at each lengthwise end around a rod. A pair of rods to which each shelf is secured are located at substantially the same vertical level. Each rod is spaced closely adjacent to a panel face with portions of the shelf secured therearound being pressed between the rod and adjacent panel face to inhibit transverse movement of the shelf. A plurality of tiers of shelves may be provided along the length of the shipping rack. A plurality of transversely extending vertically spaced apart bars are secured between each pair of transversely spaced apart vertical uprights. The bars are positioned closely adjacent to the panel on the panel face opposite from the panel face closely adjacent to the rods to provide support in the lengthwise direction of the rack for the panels.

FIG. 1 is a perspective view of one embodiment of a shipping rack in accordance with the present invention;

FIG. 2 is a perspective view of one end of a shelf and associated structure;

FIG. 3 is a sectional view taken substantially along the line 3--3 of FIG. 1 looking in the direction of the arrows, the section being a portion only of the tier of shelves, with articles of manufacture being representatively loaded onto the shelves; and

FIG. 4 is a sectional view taken substantially along the line 4--4 of FIG. 1 looking in the direction of the arrows, the section illustrating a portion only of the shelves.

Referring to the drawing, it will be noted that the shipping rack 10 includes a bottom wall structure 12 having a width and a length with an upstanding end wall structure 14, 16 at each end of the length of the bottom wall. The bottom and end wall structures are made to be fabricated of welded steel angle members. Other materials may optionally be used for fabrication purposes as desired.

The bottom wall 12 comprises a frame consisting of side rail members 18, 20 and end rail members 22, 24. A pair of spaced apart loops 26, 28 are provided at each end of the bottom wall to facilitate manipulation of the rack by means of a fork lift truck. Similar loops 30, 32 are provided on each side of the bottom wall for use by a fork lift truck.

Each of the end walls comprises a frame consisting of an upper rail 34 and vertical end rails or uprights 38, 40 which are transversely spaced apart with respect to the width of the rack. As will be noted in FIG. 1, a plurality of vertically spaced apart longitudinally extending bars 42 are provided on the backside of the rack. These bars act to limit loading of articles onto the rack with respect to the width of the rack to prevent articles from being pushed out of the rack as they are being loaded.

A top wall structure 44 is also provided. The top wall structure 44 comprises side rail members 46, 48 which are connected to the end walls. A protective panel structure 54 is provided between these rails to prevent damage to the contents of the articles loaded onto the rack.

Casters 56 are provided at the lower end of the vertical uprights to permit manual pushing of the rack as desired.

Three tiers of shelves 58, 60, 62 are suspended between the end walls of the rack. More or fewer tiers may be used as desired. Additional pairs of vertical uprights 64, 66 which are transversely spaced apart are provided to accommodate the plurality of tiers of shelves. A plurality of transversely extending vertically spaced apart bars 68, 70, 72 74 are secured between each pair of transversely spaced apart vertical uprights. These bars are positioned closely adjacent to vertically extending pairs of panels 76, 78, 80, 82, 84, 86 on the panel face which is opposite from the panel face which is closely adjacent to rods which support shelves as will be hereinafter described. The panels prevent lengthwise movement of articles of manufacture which are loaded onto the shelves.

Each tier of shelves is supported by means of rods. A plurality of transversely extending vertically spaced apart rods are provided between each pair of transversely spaced apart vertical uprights. The structure for the center tier 60 of shelves is illustrated in FIGS. 2, 3 and 4. As will be therein noted, a plurality of rods 88 and 90 are provided at each longitudinal edge of the tier of shelves. The rods are secured to the bars 70, 72 by means of three cylindrical elements 92, 94, 96 which are welded to the bars. The shelves 98 are secured to the rods.

Each shelf is fabricated of a pliable stretchable cloth. The term "cloth" is used in a broad sense to mean a solid sheet of either synthetic or natural material or a fabric made usually by weaving, felting or knitting natural or synthetic fibers and filaments. For example, ten ounce natural duck is one suitable material. Other materials may, of course, be used as desired.

The edges of the shelves are secured at each lengthwise end around a rod. This is accomplished by looping the end of the shelf around the rod and sewing as along line 100 as illustrated in FIG. 2. The shelves are notched as at 102 to fit around the cylindrical elements. As best seen in FIG. 3, the bars 70, 72 are positioned closely adjacent to the panels 80, 82 as aforementioned. The material of the shelves is pressed between the rod and adjacent panel face to inhibit transverse movement of the shelf. It will be appreciated that the shelves, being fabricated of cloth material, could shift along the length of the rod which is undesirable as it would bunch the material of the shelves up and prevent proper seating of articles of manufacture loaded thereon. As previously mentioned, the bars 70, 72 are positioned closely adjacent to the panels on the panel face opposite from the panel face which is closely adjacent to the rods to provide support in the lengthwise direction of the rack for the panels. This prevents bulging of the panels in the lengthwise direction which would interfere or reduce the effective width of the shelves.

With particular reference to FIG. 3, it will be noted that articles of manufacture, herein illustratively automotive door trim panels 104, are loaded onto the shelves 98. The shelves 98, which are attached to rods which are located at substantially the same vertical level, are spaced apart a vertical distance which is slightly greater than the thickness of the article of manufacture 104 which is loaded thereon. This results in the superjacent, or upper, shelves being stretched by the weight of the door trim panel. This stretching places the superjacent shelf into contact with the article of manufacture loaded onto the subjacent, or lower, shelf. The consequence of this is that the load on the rack 10 is steadied and the door trim panels are not damaged by contact with each other because of the interposition of the shelf material.