Luggage base device

Abstract

A luggage base device is adapted to be installed in a luggage case, which comprises a shell, a plurality of wheels, and a trolley set. The luggage base device comprises a base structure and a trolley seat member. The base structure is installed at the bottom of the shell. The base structure includes a base plate abutting against the shell, and a plurality of wheel seats located on the base plate and respectively provided for the wheels to be installed. The trolley seat member is detachably assembled on the base plate. The trolley seat member includes a connecting portion installed on the base plate, and a seat body portion connected to the connecting portion and used for fixing the trolley set. By virtue of the separate two-piece structure of the base structure and the trolley seat member, the use range of the luggage base device is increased, and the cost of production mold is reduced.

Description

Technical Field

[0001] This utility model relates to a suitcase, and more particularly to a suitcase base device installed at the bottom inside the suitcase shell. Background Technology

[0002] See Figure 1 A type of fabric or soft-shell suitcase currently available on the market includes an outer shell, a suitcase base assembly 8 located at the bottom inside the outer shell, multiple wheels mounted on the bottom side of the suitcase base assembly 8 and exposed outside the outer shell, and a pull rod assembly mounted on the rear side of the suitcase base assembly 8. The pull rod assembly includes two pull rods mounted upright on the suitcase base assembly 8, and a handle connected to the top of the pull rods and located at the top outside the outer shell, the handle being used to grip and pull the suitcase.

[0003] The luggage base device 8 is used to strengthen the structural strength of the luggage, increasing its durability when items are loaded. Simultaneously, the luggage base device 8 also serves to secure the pull rod to the interior of the outer casing. Previously, the luggage base device 8 was a one-piece molded structure. The manufacturing method for the luggage base device 8 involved feeding raw materials into an injection molding machine and injecting the one-piece molded luggage base device 8 through an injection process.

[0004] For one-piece molded luggage base devices, due to the wide variety of luggage sizes, handle assemblies, and appearance styles, each change in specifications requires the design and manufacture of a new luggage base device and a corresponding injection mold. Therefore, existing one-piece molded luggage base devices suffer from limited application scope and high production mold costs. Utility Model Content

[0005] The purpose of this invention is to provide a luggage base device that can overcome at least one of the shortcomings of the prior art.

[0006] This utility model discloses a luggage base device suitable for installation inside a luggage compartment, the luggage compartment comprising an outer shell, multiple wheels, and a pull rod assembly. The luggage base device is used to mount and secure the wheels and the pull rod assembly. The luggage base device includes a base structure and a pull rod support.

[0007] The base structure is a one-piece molded structure and is installed at the bottom inside the outer shell. The base structure includes a planar base plate for abutting against the outer shell, and a plurality of wheel seats located on the base plate for mounting the wheels.

[0008] The pull rod seat is an integrally formed structure and can be detachably assembled onto the base plate. The pull rod seat includes a connecting portion mounted on the base plate and a seat portion connected to the connecting portion for fixing the pull rod assembly.

[0009] The present invention relates to a luggage base device, wherein the pull rod assembly has two upright pull rods, and the base body has two grooves spaced apart from each other and extending inward with their openings facing upward, the grooves being used to install and fix the pull rods.

[0010] The luggage base device of this utility model is made of thermoplastic plastic.

[0011] The luggage base device of this utility model further includes at least one side plate extending upward from the side of the base plate.

[0012] The luggage base device of this utility model has a base plate with an upwardly convex surface and a grid pattern.

[0013] The luggage base device of this utility model has a connecting part that is a curved plate with two rectangular hollow perforations.

[0014] The beneficial effects of this utility model are as follows: By using a separate two-piece structure for the base structure and the pull rod holder, the same base structure can be assembled with pull rod holders of different specifications, thus avoiding the need to remanufacture a new luggage base device due to differences in pull rod specifications. Similarly, the same pull rod holder can be assembled with base structures of different specifications, thus avoiding the need to remanufacture a new luggage base device due to differences in luggage size. Replacing the one-piece structure with a separate two-piece structure increases the application range of the luggage base device. Attached Figure Description

[0015] Other features and beneficial effects of this utility model will be clearly presented in the embodiments with reference to the accompanying drawings, wherein:

[0016] Figure 1 This is a 3D view of an existing luggage base device;

[0017] Figure 2 This is a perspective view of the luggage base device of this utility model, illustrating its use with a luggage.

[0018] Figure 3 This is an exploded perspective view of one embodiment of the luggage base device;

[0019] Figure 4 This is a partial side sectional view of the embodiment described;

[0020] Figure 5 This is a top view of the embodiment described;

[0021] Figure 6 This is a flowchart of a method for manufacturing the luggage base device. Detailed Implementation

[0022] See Figures 2 to 4 This utility model discloses an embodiment of a luggage base device suitable for installation inside a luggage 6. The luggage 6 includes a shell 61, four wheels 62, and a pull rod assembly 63. The pull rod assembly 63 has two upright pull rods 631 and a handle 632 connected to the top of the pull rods 631 for gripping. The luggage base device includes a base structure 1 installed at the bottom inside the shell 61, a pull rod seat 2 detachably assembled on the base structure 1, and a plurality of rivets 7 for mounting the pull rod seat 2 to the base structure 1.

[0023] The base structure 1 is an integrally formed structure, including a base plate 11, generally rectangular in shape, abutting against the outer shell 61; at least one side plate 13 extending upward from the side of the base plate 11; and four wheel seats 12 located at the four corners of the base plate 11. The base plate 11 is a plate with an upwardly protruding, grid-like structure, which enhances the durability of the base plate 11. In this embodiment, the base structure 1 includes four side plates 13. Other variations of this embodiment may vary depending on actual needs, and may include one, two, etc. The side plates 13 and the base plate 11 together define an upwardly opening storage space 14. Each wheel seat 12 protrudes upward from the base plate 11 in a boss-like shape and connects to two adjacent side plates 13.

[0024] See Figures 3 to 5 The pull rod seat 2 is an integrally formed structure, and includes a connecting part 21 that is upright and simultaneously mounted on one of the base plate 11 and the side plate 13 by the rivet 7, and a seat part 22 that is connected to the connecting part 21 and used to fix the pull rod assembly 63.

[0025] The connecting part 21 is a curved plate with two rectangular perforations. This perforated design helps reduce the weight of the connecting part 21. In this embodiment, one end of the connecting part 21 is mounted to one of the rear-facing side plates 13 with the rivet 7, and the other end is mounted to the base plate 11 with the rivet 7. The connecting part 21 is fixed with the rivet 7, thus making the installation of the pull rod seat 2 easier and faster.

[0026] The seat portion 22 has two spaced-apart grooves 221 that extend inward and open upward. Each groove 221 has an annular wall extending upward from the bottom, so that when the pull rod 631 is fixed to the groove 221, each annular wall of each groove 221 has the function of assisting in positioning each pull rod 631.

[0027] See Figures 2 to 4 When assembling the luggage base device, the base structure 1 is aligned with the luggage 6 and placed inside the luggage 6 from top to bottom, so that the base plate 11 is in contact with the bottom of the outer shell 61. At this time, each wheel seat 12 will form a space with the outer shell 61, which can accommodate the installation of each corresponding wheel 62. Next, the pull rod 631 is passed through the outer shell 61 and fixed in the groove 221 of the seat part 22, and the handle 632 is inserted through the top of the outer shell 61. The luggage base device is then installed. The base structure 1 and the pull rod seat 2 are modularly designed, increasing the number of different size combinations of the luggage 6 and the pull rod assembly 63, thus improving the application range of the luggage base device.

[0028] See Figure 6 The manufacturing method of the luggage base device includes a base structure manufacturing step 3, a pull rod seat manufacturing step 4, and an assembly step 5.

[0029] Step 3 of the base structure manufacturing process involves manufacturing the one-piece base structure 1 using a vacuum forming process. The vacuum forming process includes: heating the sheet material, placing a plastic sheet into a vacuum forming machine and onto a vacuum forming mold, heating the mold, and uniformly heating the plastic sheet until it softens; vacuuming, removing air from between the plastic sheet and the mold to create a vacuum, allowing the plastic sheet to fully conform to the mold and form the desired shape; cooling and demolding, allowing the plastic sheet to cool and solidify before removing it from the mold; and trimming and finishing, removing excess plastic from the edges of the plastic sheet to produce the molded base structure 1.

[0030] Step 4 of the tie rod seat manufacturing process involves manufacturing the integrally molded tie rod seat 2 using an injection molding process. The injection molding process includes feeding a plastic raw material into an injection molding machine; heating the plastic raw material to a molten state; injection, injecting the molten plastic raw material under pressure into an injection molding mold until the plastic raw material fills the injection molding mold; and demolding, allowing the plastic raw material to cool and solidify, and then removing it from the injection molding mold to form the molded product of the tie rod seat 2.

[0031] In assembly step 5, the pull rod seat 2 is riveted and fixed to the base plate 11 of the base structure 1 using multiple rivets 7.

[0032] The luggage base device is made of thermoplastic plastic. In addition, the base structure 1 is manufactured by vacuum forming process, which increases the structural strength of the luggage base device. Therefore, installing the luggage base device inside the luggage can protect the bottom of the luggage 6 and increase the durability of the luggage 6.

[0033] In summary, this utility model, through its separate two-piece structure of the base structure 1 and the pull rod seat 2, allows the same base structure 1 to be assembled with pull rod seat 2 of different specifications. Therefore, it avoids the need to remanufacture the luggage base device and its production mold due to differences in the specifications of the pull rod assembly 63. Similarly, it avoids the need to remanufacture the luggage base device and its production mold due to differences in the size of the luggage 6. Therefore, replacing the one-piece molded structure with a separate two-piece structure achieves the beneficial effects of increasing the application range of the luggage base device and reducing production mold costs.

[0034] The above description is merely a specific embodiment of this utility model and should not be construed as limiting the scope of the claims of this utility model. Equivalent variations made based on the contents of the claims and description of this utility model should also be covered by the scope of the claims of this utility model.

Claims

1. A luggage base device suitable for installation inside a luggage compartment, the luggage compartment comprising a shell, multiple wheels, and a pull rod assembly, the luggage base device being used for mounting the wheels and securing the pull rod assembly, characterized in that: The luggage base device includes: The base structure is an integrally molded structure installed at the bottom inside the outer casing. The base structure includes a planar base plate for abutting against the outer casing, and multiple wheel seats located on the base plate for mounting the wheels. The pull rod seat is an integrally molded structure that can be detachably assembled onto the base plate. The pull rod seat includes a connecting portion mounted on the base plate and a seat portion connected to the connecting portion for fixing the pull rod assembly.

2. The luggage base device according to claim 1, characterized in that: The pull rod assembly has two upright pull rods, wherein the base portion has two grooves spaced apart from each other and extending inward with their openings facing upward, the grooves being used to install and fix the pull rods.

3. The luggage base device according to claim 1, characterized in that: The base structure is made of thermoplastic plastic.

4. The luggage base device according to claim 1, characterized in that: The base structure also includes at least one side plate extending upward from the side of the substrate.

5. The luggage base device according to claim 1, characterized in that: The substrate is a plate with an upwardly convex surface and a grid pattern.

6. The luggage base device according to claim 1, characterized in that: The connecting part is a curved plate with two rectangular perforations.

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