Luggage board structure

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1. Field of the Invention

The present invention relates generally to the local structure of a form of luggage, and more particularly to an innovative structural design of luggage board.

2. Description of Related Art Including Information Disclosed Under 37 CFR 1.97 and 37 CFR 1.98

The commonly used structural design of luggage boards, as is known to all, is a solid shell made of a piece of plastic sheet material by hot pressing and cutting; or, it is a solid shell made of a piece of metal sheet material by stamping and cutting.

Despite the aforementioned molding methods, the commonly used luggage boards have the same problems; in the molding process of the luggage boards, space on the side of a luggage board corresponding to the wheels must be reserved for mounting holes of wheels, while the side corresponding to the handle must have a mounting hole of handle, wherein, each mounting hole of wheel, for installation, must have a molded wheel base and an internal positioning base because the positioning bolt of the wheel base must be firmly positioned by passing through the luggage board and interlocking with the inner base; the aforementioned mounting hole of handle is designed for installation of the handle, which requires a guide base and an inner locking base; in other words, the conventional structure of the commonly used luggage boards, for installation of wheels and handle, must be put into molding in order to produce the aforementioned complicated wheel bases, inner positioning bases, guide base and inner locking base of handle, which, consequently, significantly increases the manufacturing costs.

Thus, to overcome the aforementioned problems of the prior art, it would be an advancement in the art to provide an improved structure that can significantly improve the efficacy.

Therefore, the inventor has provided the present invention of practicability after deliberate design and evaluation based on years of experience in the production, development and design of related products.

The “luggage board structure” of the present invention is a creative and special structure of art of technology mainly comprised of the described plastic wheel base part, plastic top and middle curved surface. Compared to the commonly used structures (of the conventional art), the present invention provides an integrated structure consisting of a lower board and wheel bases at the bottom of the luggage board with the described plastic wheel base part and integrates the board structure at the top of a luggage board and the mounting structure of holder with the plastic top at the top of the luggage board. Therefore, compared to the commonly used structures, the present invention reduces the manufacturing and assembly costs arising from molding of multiple sets of said members, which achieves satisfactory industrial and economic efficacy; besides, the luggage board of the present invention is divided into three parts, namely, the plastic wheel base part, plastic top and middle curved surface so that manufacturers can make various attempts with regard to design of textures and colors in the manufacturing process in order to present various patterns of the luggage board and show the practical advancement of meeting diverse demands.

FIG. 1 is an assembled perspective view of a luggage of the preferred embodiment of the present invention.

FIG. 2 is an exploded perspective view of the luggage board of the preferred embodiment of the present invention.

FIG. 3 is the local vertical sectional view ( 1 ) of the luggage board of the preferred embodiment of the present invention.

FIG. 4 is the local vertical sectional view ( 2 ) of the luggage board of the preferred embodiment of the present invention.

FIG. 5 is the exploded sectional view of local members of the luggage board of the preferred embodiment of the present invention.

FIG. 6 is the enlarged stereogram of the embodiment of the integrated hook base in the inner wall of the plastic wheel base part of the present invention.

FIG. 7 is the stereogram of the embodiment of rivets as the joining members of the present invention.

FIG. 8 is the sectional view of the embodiment of rivets as the joining members of the present invention.

FIG. 9 is the stereogram of the embodiment of machine sewing threads as the joining members of the present invention.

FIG. 10 is the sectional view of the embodiment of machine sewing threads as the joining members of the present invention.

As shown in FIGS. 1 to 4 , it is a preferred embodiment of the luggage board structure of the present invention, provided that the embodiment is only to explain the art of the present invention, but does not attempt to impose any form of restrictions to the present invention in terms of patent application. The luggage board A is mounted on one side of the frame 11 of a luggage 10 to form a board on one side of the luggage 10 .

The luggage board A is comprised of the following parts and components: a plastic wheel base part 20 on the lower part of the luggage board A, the plastic wheel base part 20 being equipped with two integrated wheel bases 21 at the bottom with spacing in between, each wheel base 21 having a vertically axial wheel receptacle 22 (used for installing the wheel 12 into the luggage 10 ), and the plastic wheel base part 20 , at the top, having an upper joining edge 23 in a crooked shape on both sides; a plastic top 30 on the upper side of the luggage board A, the plastic top 30 and the plastic wheel base part 20 being upper and lower configurations separated from each other, the plastic top 30 having an integrated mounting base of handle 31 , the mounting base 31 consisting of more than one positioning holes 32 (used for mounting and positioning of the handle 13 of the luggage 10 ; in this embodiment, there are two separated handle positioning holes 32 ), and the plastic top 30 , at the bottom, having a lower joining edge 33 in a crooked shape on both sides; a middle curved surface 40 in the middle of the luggage board A, the middle curved surface consisting of a main board 41 and two integrated side boards 42 with the left and right sides curved backward, the middle curved surface 40 having an upper joining edge 43 in a crooked shape on both sides at the top, the upper joining edge 43 being designed for connecting the lower joining edge 33 of the plastic top 30 and fixed with joining members (see detailed description below), and the middle curved surface 40 having a lower joining edge 44 in a crooked shape on both sides at the bottom, the lower joining edge 44 connecting to the upper joining edge 23 of the plastic wheel base part 20 and fixed with joining members (see detailed description below).

As shown in FIGS. 2 and 6 , in the embodiment, the inner wall of the plastic top 30 and the inner wall of the plastic wheel base part 20 form a pair of integrated hook bases 50 separated with each other (in the FIGS. 2 and 6 , only the hook base 50 on the plastic wheel base part 20 is shown); the hook base 50 of the embodiment is mainly designed for fastening the hook associated to the movable part of the movable spacer in the luggage 10 . Different from the commonly used structures, the hook base 50 of the embodiment is mainly an integrated part in the inner wall of the plastic wheel base part 20 , whereas the commonly used hook bases are generally independent parts fixed onto the inner parts of luggage. Therefore, compared to the commonly used hook bases, the design helps reduce the cost of assembly and shows practical advancement.

As shown in FIGS. 2, 7 and 8 , in the embodiment, the middle curved surface 40 is a piece of curved metal sheet material and the described joining members are rivets 60 fastening the upper joining edge 43 and the lower joining edge 33 , the lower joining edge 44 and the upper joining edge 23 with arrays of separated rivet holes 61 .

As shown in FIGS. 9 and 10 , in the embodiment, the middle curved surface 40 B is comprised of a piece of curved plastic sheet material and the described joining members are machine sewing threads 70 fastening the upper joining edge 43 and the lower joining edge 33 , the lower joining edge 44 and the upper joining edge 23 .

With said structures and technological characteristics, the luggage board A of the present invention is mainly comprised of the described plastic wheel base part 20 , plastic top 30 and middle curved surface 40 , wherein, the integrated mounting base of handle 31 of the plastic top 30 at the top of the luggage board A has a pair of separated positioning holes 32 designed for installation and positioning of the holder 13 of the luggage 10 , and therefore, this part of the present invention integrates the board structure at the top of a luggage board and the mounting structure of holder, which reduces the costs arising from molding of the commonly used holder guide bases and inner locking bases and assembly of these sets of members; the plastic wheel base part 20 has a pair of integrated wheel bases 21 at the bottom and the wheel receptacle 22 of each wheel base 21 is designed for installation of a wheel 12 into the luggage 10 and thus, the part of the present invention provides an integrated structure consisting of a lower board and wheel bases of the luggage board, which reduces the costs arising from molding of the commonly used wheel bases and inner positioning bases and assembly of these sets of members; besides, the luggage board A of the present invention is divided into three parts, namely, the plastic wheel base part 20 , the plastic top 30 and the middle curved surface 40 , so that manufacturers can make various attempts with regard to design of textures and colors in the manufacturing process, e.g. a design of metal texture of the middle curved surface 40 or an embodiment in different colors of the three parts, in order to present various patterns of the luggage board.

It should be noted that the plastic top 30 has an integrated mounting base of handle 31 , and yet, the specific embodiment does not attempt to impose any restrictions to the design of such mounting base 31 . Both the built-in fixed mounting base and the external fixed structure are acceptable.