Portable draw-bar box

Abstract

The utility model relates to a portable draw-bar box and belongs to the technical field of luggage production. The luggage case comprises a case body, and angle beads, trundles and a pull rod which are arranged on the case body, the case body comprises a front case shell and a rear case shell which are zipped through a zipper, the shell bodies of the front case shell and the rear case shell are formed by bending plastic plates which are cut into plane unfolding shapes of the front case shell and the rear case shell, and four corners of the shell bodies are sewn by sewing threads. Decorative fabric is attached to the outer wall of the shell, the two sides of the zipper are each provided with a pipe strip lined with a steel wire, and the pipe strips extend along the zipper and are sewn to the openings of the front box shell and the rear box shell together with the zipper. The box body is simple in structure and convenient to manufacture, and the raw material cost and the manufacturing cost are reduced while the box body has good strength and rigidity.

Description

Technical Field

[0001] The utility model relates to a lightweight trolley case, belonging to the technical field of case and bag production. Background Art

[0002] Trolley cases are a common way for people to carry and store items while traveling. The case consists of two opposing shells. Existing shells are typically molded from metal or plastic, connected by connectors. These cases are often not lightweight and have high raw material and manufacturing costs. Summary of the Invention

[0003] The utility model mainly solves the technical problems in the prior art that the box body is not light enough and the raw material and production costs are high, and provides a lightweight trolley case with a light box body and low raw material and production costs.

[0004] The present invention aims to solve the above-mentioned technical problems mainly through the following technical solutions: the present invention includes a box body, corner guards, casters and pull rods installed on the box body, the corner guards are respectively installed on each corner of the box body, the casters are fixed to the bottom of the box body through the corner guards, the box body includes a front box shell and a rear box shell with openings opposite to each other, the pull rod is installed on the rear box shell, and it is characterized in that the shells of the front box shell and the rear box shell are formed by bending processing by cutting a plastic sheet into the plane unfolded shape of the front box shell and the rear box shell, the four corners of the shell are sewn with stitches, the outer wall of the shell is covered with decorative fabric, a zipper is provided between the front box shell and the rear box shell, and a pipe strip lined with steel wire is provided on each side of the zipper, the pipe strip extends along the zipper and is sewn to the openings of the front box shell and the rear box shell together with the zipper.

[0005] Preferably, honeycomb panels are fixed to the inner sides of the bottoms of the front and rear box shells respectively, the casters are fixedly connected to the honeycomb panels by screws passing through the corner guards, and the bottom of the pull rod is fixedly connected to the honeycomb panels by screws.

[0006] Preferably, a plurality of support rods are provided inside the box body, and the support rods are respectively provided on both sides of the rear box shell and on the upper part and both sides of the front box shell.

[0007] Preferably, the corner guard includes an outer corner guard arranged on the outer wall of the box and a corner guard lining arranged on the inner wall of the box corresponding to the outer corner guard, and the outer corner guard and the corner guard lining are fixedly connected by screws.

[0008] Preferably, the casters and the outer corner guards at the bottom of the box are an integrated structure.

[0009] Preferably, handles are installed on the top and sides of the box.

[0010] The utility model has a simple structure and has the following advantages:

[0011] The box body of the present invention includes a front shell and a rear shell. The shells of the front shell and the rear shell are made of plastic sheets (such as PP sheets or PE sheets) that have both plasticity and rigidity through cutting, bending, and sewing. The plasticity of the plastic sheets facilitates cutting, bending, and sewing, while the rigidity of the plastic sheets imparts good strength and rigidity to the box body, resulting in the box body being lightweight, sturdy, and easy to manufacture. A zipper is used to connect the front shell and the rear shell, resulting in a simple structure and ease of use. Tube strips lined with steel wire are provided on either side of the zipper, providing good support for the zipper's tape, allowing the zipper's slider to move more smoothly when pulled back and forth.

[0012] Furthermore, honeycomb panels and support rods are arranged in the front box shell and the rear box shell. The honeycomb panels are used to fix the pull rods and casters, and the support rods are used to support the box body, which effectively improves the overall strength and rigidity of the box body.

[0013] Furthermore, the corners of the box body are protected by corner guards, and the outer corner guards and the inner lining of the corner guards are connected and fixed by bolts penetrating the box body, so the corner guards have a simple structure, a firm connection, and are relatively easy to install.

[0014] Furthermore, the corner guards and casters at the bottom of the box body adopt an integrated structure, which can simplify the assembly steps of the trolley case and improve assembly efficiency.

[0015] Therefore, the utility model has the advantages of a light and beautiful box body, being firm and durable, having a simple manufacturing process, and having low raw material and manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Attachment Figure 1 This is a schematic diagram of a preferred embodiment of the present invention when viewed from above;

[0017] Attachment Figure 2 It is a schematic diagram of a side view of a preferred embodiment of the utility model;

[0018] Attachment Figure 3 This is a schematic diagram of a partial cutaway of a rear box shell in a preferred embodiment of the present invention;

[0019] Attachment Figure 4 This is a schematic diagram of a partial cutaway of the front box shell in a preferred embodiment of the present invention.

[0020] Attachment Figure 5 This is a schematic diagram of a front box shell plane unfolded in a preferred embodiment of the present invention;

[0021] Attachment Figure 6 It is a schematic diagram of the unfolded rear box shell plane in a preferred embodiment of the present invention.

[0022] Explanation of the accompanying drawings: 1. Box body; 11. Front box shell; 12. Rear box shell; 2. Corner guard; 21. Outer corner guard; 22. Corner guard lining; 3. Caster; 4. Pull rod; 5. Zipper; 6. Handle; 7. Pipe strip; 8. Support rod; 9. Honeycomb board; 110. Front box shell flat plate; 111. Front box shell bending line; 120. Rear box shell flat plate; 121. Rear box shell bending line; 122. Pull rod mounting hole. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be further specifically described below with reference to embodiments and in conjunction with the accompanying drawings.

[0024] Example 1: As shown in the attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 As shown, the utility model includes a box body 1, corner guards 2, casters 3 and pull rods 4 installed on the box body 1, the corner guards 2 are respectively installed at each corner of the box body 1, and the casters 3 are fixed to the bottom of the box body 1 through the corner guards 2;

[0025] The box body 1 includes a front box shell 11 and a rear box shell 12 which are connected by a zipper 5;

[0026] The front box shell 11 and the rear box shell 12 are formed by cutting and bending PP board or PE board, and the four corners are sewn with stitches. The outer walls of the front box shell 11 and the rear box shell 12 are covered with decorative fabrics;

[0027] Support rods 8 and honeycomb panels 9 are fixed inside the front box shell 11 and the rear box shell 12;

[0028] The corner guard 2 includes an outer corner guard 21 provided on the outer wall of the box body 1 and a corner guard lining 22 provided on the inner wall of the box body 1 at a position corresponding to the outer corner guard 21. The outer corner guard 21 and the corner guard lining 22 are fixed by bolts penetrating the box body 1. A hole is provided on the corner guard lining 22 for inserting the end of the support rod 8.

[0029] The caster 3 and the outer corner guard 21 installed at the bottom of the box body 1 are an integrated structure;

[0030] The pull rod 4 is mounted on the rear box shell 12;

[0031] The handles 6 are respectively installed on the top and side of the box body 1;

[0032] The tube strips 7 are arranged on both sides of the zipper 5. The tube strips 7 extend along the zipper 5 and are sewn together with the fabric tape of the zipper 5 to the openings of the front box shell 11 and the rear box shell 12.

[0033] The support rods 8 are made of fiber rods and are fixed on both sides of the rear box shell 12 and the upper part and both sides of the front box shell 11;

[0034] The honeycomb plate 9 is fixed to the bottom of the front box shell 11 and the rear box shell 12. The honeycomb plate 9 is provided with screw holes and holes for inserting the ends of the support rods 8.

[0035] The production process of this utility model is as follows:

[0036] 1. Prepare the board: stick the decorative fabric flatly on the PP or PE board;

[0037] 2. Marking: Mark the planar expansion diagram of the front box shell 11 on the plate (see attached Figure 5 ) and the planar development of the rear box shell 12 (see attached Figure 6 );

[0038] 3. Cutting: Cut off the excess outer portion along the outline of the plane expansion diagram to obtain the front box shell flat plate 110 and the rear box shell flat plate 120, and cut out the tie rod mounting hole 122 on the rear box shell flat plate 120;

[0039] 4. Bending: The front box shell flat plate 110 is bent along the four front box shell bending lines 111 (attached Figure 5 The four dotted lines in the middle) are folded to the same side to form a hollow shell with one side open (the decorative fabric faces outward), and the four corners of the shell are sewn together to obtain the front box shell 11; the rear box shell flat plate 120 is folded along the rear box shell bending line 121 (attached Figure 6 The four dotted lines in the middle are folded to the same side to form a hollow shell with one side open (the decorative fabric faces outward), and the four corners of the shell are sewn together to obtain the rear box shell 12;

[0040] 5. Install the zipper and the tube strip: Align the openings of the front box shell 11 and the rear box shell 12, and install the zipper 5 and the tube strip 7 along the openings of the front box shell 11 and the rear box shell 12 by sewing. After the zipper 5 and the tube strip 7 are sewn and fixed, the front box shell 11 and the rear box shell 12 can be pulled together by the zipper 5 to form a complete box body 1;

[0041] 6. Install corner guards, casters, pull rods, handles, support rods and honeycomb panels: install the prefabricated honeycomb panels 9 on the bottom of the front box shell 11 and the rear box shell 2 respectively, install the prefabricated corner guards 2 on the corners of the box body 1, and fix the casters 3 to the honeycomb panels 9 by screws passing through the corner guards 2. Fix the upper end of the pull rod 4 to the pull rod mounting hole 122 on the rear box shell 12 and fix the lower end to the honeycomb panels 9 with screws. Install support rods 8 on both sides and the upper part of the front box shell 11 and on both sides of the rear box shell 12. After installing the handles 6 on the top and sides of the box body 1, the trolley case is completely installed.

[0042] Of course, the above drawings and embodiments are only used to explain and illustrate the present invention and cannot be used as an improper limitation of the present invention. Any technical solutions obtained by those skilled in the art by making equivalent adjustments and changes based on the present invention fall within the scope of protection of the present invention.

Claims

1. A lightweight trolley case, comprising a case body (1), corner guards (2), casters (3) and a pull rod (4) mounted on the case body (1), wherein the corner guards (2) are mounted on respective corners of the case body (1), the casters (3) are fixed to the bottom of the case body (1) through the corner guards (2), the case body (1) comprises a front case shell (11) and a rear case shell (12) with openings facing each other, the pull rod (4) is mounted on the rear case shell (12), and is characterized in that: The shells of the front box shell (11) and the rear box shell (12) are respectively formed by bending plastic sheets cut into the planar unfolded shapes of the front box shell (11) and the rear box shell (12), the four corners of the shells are sewn with stitches, and the outer walls of the shells are covered with decorative fabrics. A zipper (5) is provided between the front box shell (11) and the rear box shell (12), and a tube strip (7) lined with steel wire is provided on each side of the zipper (5). The tube strip (7) extends along the zipper (5) and is sewn together with the zipper (5) to the openings of the front box shell (11) and the rear box shell (12).

2. A lightweight trolley case according to claim 1, characterized in that: Honeycomb plates (9) are respectively provided on the inner sides of the bottoms of the front box shell (11) and the rear box shell (12); the casters (3) are fixedly connected to the honeycomb plates (9) via screws passing through the corner guards (2); and the bottom of the pull rod (4) is fixedly connected to the honeycomb plates (9) via screws.

3. A lightweight trolley case according to claim 2, characterized in that: A plurality of support rods (8) are provided inside the box body (1), and the support rods (8) are respectively provided on both sides of the rear box shell (12) and on the upper part and both sides of the front box shell (11).

4. A lightweight trolley case according to claim 1, 2 or 3, characterized in that: The corner guard (2) comprises an outer corner guard (21) arranged on the outside of the box body (1) and a corner guard lining (22) arranged on the inside of the box body (1) corresponding to the outer corner guard (21); the outer corner guard (21) and the corner guard lining (22) are fixedly connected by screws.

5. A lightweight trolley case according to claim 1, 2 or 3, characterized in that: The caster (3) and the outer corner guard (21) installed at the bottom of the box (1) are an integrated structure.

6. A lightweight trolley case according to claim 1, 2 or 3, characterized in that Handles are installed on the top and sides of the box.

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