Luggage

Abstract

The utility model discloses a luggage. The luggage comprises a front cover and a rear cover, and the front cover and the rear cover are closed to form a cavity for accommodating an object. A middle frame is arranged on the edge, facing the rear cover, of the front cover and / or the edge, facing the front cover, of the rear cover, and when the front cover and the rear cover are closed, sealing of a covering seam is achieved through the middle frame. The middle frame is of a multi-layer structure in the thickness direction, the multi-layer structure of the middle frame comprises a first surface layer, a middle layer and a second surface layer, and the first surface layer, the middle layer and the second surface layer are all fiber composite material layers. Namely, the middle frame in the embodiment is made of the fiber composite material, so that the middle frame can reach the strength of a metal material and also has good elasticity, so that the middle frame has enough strength to bear impact force when being strongly impacted so as not to deform as much as possible to protect the luggage and articles in the luggage; and enough elasticity enables the middle frame not to generate plastic deformation so as to prevent the middle frame from being unable to recover after deformation.

Description

Technical Field

[0001] The utility model belongs to the technical field of luggage, and particularly relates to a piece of luggage. Background Art

[0002] Luggage is a general term for suitcases, trunks, toolboxes, handbags, etc. At present, the suitcase products on the market are divided into zipper types and middle-frame types, and the middle-frame types are further divided into plastic frames and metal frames. Metal frames have the advantage of high strength and are very suitable as the frames of valuable item boxes. They have high impact resistance and durability. Generally, 6061 or 6063 type aviation aluminum is used as the raw material for metal frames. Their disadvantages are heavy weight, cumbersome processing (including steps such as aluminum profile extrusion - segmented cutting - 4 R-angle bending - head and tail connection - installation hole processing - assembling the shell - merging and correcting the upper and lower frames), and they are prone to deformation after being impacted by strong external forces and cannot be restored after deformation. Plastic frames also have the advantages of high strength, impact resistance, and durability. Compared with metal frames, they do not have such high strength, but their mold processing cost is high and they are only suitable for models with large batch production. Content of the Utility Model

[0003] In view of the above problems, the utility model provides a piece of luggage with a middle frame of special design.

[0004] The technical solution of the utility model is as follows:

[0005] A piece of luggage, comprising a front cover and a rear cover. After the front cover and the rear cover are closed, a chamber for accommodating objects is formed. An edge of the front cover facing the rear cover and / or an edge of the rear cover facing the front cover is provided with a middle frame. When the front cover and the rear cover are closed, the middle frame is used to seal the closing joint. The middle frame is a multi-layer structure in the thickness direction. The multi-layer structure of the middle frame includes a first surface layer, an intermediate layer, and a second surface layer, and the first surface layer, the intermediate layer, and the second surface layer are all fiber composite material layers.

[0006] In the luggage provided in a certain preferred embodiment, the intermediate layer includes at least one intermediate unit layer. When the intermediate layer includes a plurality of the intermediate unit layers, the plurality of intermediate unit layers are arranged along the thickness direction of the middle frame.

[0007] In the luggage provided in a certain preferred embodiment, in the width direction of the middle frame, the number of layers of the intermediate unit layers included in the intermediate layer is the same.

[0008] In the luggage provided in a certain preferred embodiment, in the width direction of the middle frame, the number of layers of the intermediate unit layers included in the intermediate layer is different to adapt to the thickness change of the middle frame in the width direction.

[0009] In a bag provided in a preferred embodiment, the first surface layer is formed by a complete fiber composite material piece, and the second surface layer is formed by a complete fiber composite material piece;

[0010] The middle unit layer is formed by a complete fiber composite material piece, or is formed by splicing a plurality of fiber composite material pieces.

[0011] In a bag provided in a preferred embodiment, the first surface layer is formed by a complete fiber composite material piece, and the second surface layer is formed by a complete fiber composite material piece;

[0012] The middle layer is formed by connecting a plurality of fiber composite material parts by splicing and overlapping.

[0013] In a bag provided in a preferred embodiment, adjacent layers of the multi-layer structure of the middle frame are bonded and connected.

[0014] In a bag provided in a preferred embodiment, the glue for the bonding connection is resin.

[0015] In a bag provided in a preferred embodiment, the multi-layer structure of the middle frame is wrapped with a resin film.

[0016] In a bag provided in a preferred embodiment, the middle frame is adhesively connected to the corresponding front cover or rear cover.

[0017] Due to the adoption of the above technical solution, the utility model has the following advantages and positive effects compared with the prior art:

[0018] In the case and bag provided by the utility model, the frame has the strength of metal material, and is lightweight, low in mold cost, high in strength and has good elasticity, so that when subjected to a strong impact, it has sufficient strength to withstand the impact force and protect the case and the items inside as little as possible without deformation, and has sufficient elasticity so that the middle frame itself does not undergo plastic deformation to prevent deformation from being unable to recover. Moreover, in the case and bag provided by the utility model, the structure of the frame is simple, and production and assembly are also very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those skilled in the art. The accompanying drawings are only for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention.

[0020] Figure 1 This is a structural schematic diagram of a bag of the utility model;

[0021] Figure 2 This is an exploded schematic diagram of a bag of the utility model;

[0022] Figures 3 to 5 This is a partial cross-sectional schematic view of a luggage case of the present utility model.

[0023] Explanation of reference numerals:

[0024] 1: Front cover; 2: Rear cover; 3: Middle frame; 4: Trolley assembly; 5: Wheel assembly; 6: Rotating shaft assembly; 7: Password assembly; 8: Auxiliary lock assembly. Specific embodiments

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the specific embodiments of the present utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings, and other embodiments can be obtained.

[0026] To make the drawings concise, only the parts related to the present utility model are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, components with the same structure or function are only schematically shown as one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation.

[0027] Refer to Figures 1 to 5 , this embodiment provides a luggage case, including a front cover 1 and a rear cover 2. After the front cover 1 and the rear cover 2 are closed, a chamber for accommodating objects is formed. The edge of the front cover 1 facing the rear cover 2 and / or the edge of the rear cover 2 facing the front cover 1 is provided with a middle frame 3. When the front cover 1 and the rear cover 2 are closed, the middle frame 3 is used to seal the joint of the closed seam.

[0028] The middle frame 3 is a multi-layer structure in the thickness direction. The multi-layer structure of the middle frame 3 includes a first surface layer, an intermediate layer and a second surface layer, and the first surface layer, the intermediate layer and the second surface layer are all fiber composite material layers. That is to say, the middle frame 3 in this embodiment is made of fiber composite material. Such a middle frame 3 can achieve the strength of metal material and has good elasticity. When subjected to strong impact, it has sufficient strength to withstand the impact force to minimize deformation to protect the luggage case itself and the items inside, and has sufficient elasticity so that the middle frame 3 itself does not undergo plastic deformation to prevent it from being unable to recover after deformation.

[0029] The luggage case of this embodiment will be further described below.

[0030] Such as Figure 1 And Figure 2As shown in the figure, the luggage case includes a front cover 1, a rear cover 2, a pull rod assembly 4, a rotating shaft assembly 6, a wheel assembly 5, a password assembly 7, an auxiliary lock assembly 8, etc. The front cover 1 and the rear cover 2 can rotate relative to each other through the connection of the rotating shaft assembly 6, that is, the front cover 1 can rotate relative to the rear cover 2, and the front cover 1 and the rear cover 2 can be closed or opened by rotation. The wheel assembly 5 is installed at the bottom of the front cover 1 and the rear cover 2, so that the luggage case can be conveniently moved. The pull rod assembly 4 is installed on the rear cover 2 to assist the user in pulling the luggage case to move. The password assembly 7 is mainly used for the user to input a password. The password assembly 7 cooperates with the auxiliary lock assembly 8. When the user inputs the correct password, the auxiliary lock assembly 8 is opened so that the luggage case can be opened. When the input password is incorrect, the auxiliary lock assembly 8 cannot be opened, and the luggage case cannot be opened either.

[0031] The luggage case includes two middle frames 3, which are respectively installed on the edges of the front cover 1 facing the rear cover 2 and the edges of the rear cover 2 facing the front cover 1. As Figure 3 shown, a groove is provided on one of the middle frames 3, and a corresponding protrusion is provided on the other middle frame 3. When the front cover 1 and the rear cover 2 are closed, the protrusion will just fit into the groove, so as to achieve docking and sealing. Of course, in other embodiments, the middle frame 3 can also have other shapes, which are not limited here.

[0032] For the middle frame 3, the middle layer includes at least one middle unit layer; when the middle layer includes multiple middle unit layers, the multiple middle unit layers are arranged along the thickness direction of the middle frame 3. Generally, the thickness of the middle frame 3 in the width direction will change (as Figure 4 shown in the figure, a shows the thickness direction of the middle frame 3, and b shows the width direction of the middle frame 3); therefore, generally speaking, in the width direction of the middle frame 3, the number of middle unit layers included in the middle layer is different to adapt to the thickness change of the middle frame 3 in the width direction. Of course, it is not excluded that in some special embodiments, the thickness of the middle frame 3 in the width direction remains unchanged or the thickness change is small. At this time, in the width direction of the middle frame 3, the number of middle unit layers included in the middle layer can be the same.

[0033] The first surface layer and the second surface layer are respectively formed by a complete fiber composite material part. The middle layer is formed by splicing and connecting multiple fiber composite material parts in a lap joint manner. In one middle unit layer, the middle unit layer can be formed by a complete fiber composite material part, or formed by splicing multiple fiber composite material parts. When the thickness of the middle frame 3 increases in the width direction of the middle frame 3 (for example Figure 5 as shown at c in the figure where the thickness suddenly increases significantly), at this time, the number of middle unit layers in the middle layer also increases, and the number of middle unit layers here can be increased by lapping fiber composite material parts, so that the thickness of the middle frame 3 here increases.

[0034] The adjacent layers of the multi-layer structure of the middle frame 3 are adhesively connected. Among them, the adjacent layers refer to: the first surface layer and the adjacent intermediate unit layer, two adjacent intermediate unit layers, and the second surface layer and the adjacent intermediate unit layer. The glue for the adhesive connection is preferably resin. In actual production, the adhesive connection between the adjacent layers of the multi-layer structure of the middle frame 3 means that after the resin material is cured, the first surface layer, multiple intermediate unit layers, and the second surface layer are joined together.

[0035] Furthermore, a resin film is wrapped outside the multi-layer structure of the middle frame 3. The presence of the resin film can protect the surface texture of the multi-layer structure of the middle frame 3 from being damaged (the surface texture here refers to the surface texture facing outward in the first surface layer and the second surface layer). The middle frame 3 and the corresponding front cover 1 / rear cover 2 can be adhesively connected by using materials such as resin.

[0036] Among them, the fiber composite parts are preferably made of carbon fiber, glass fiber, Kevlar, etc.; and the entire middle frame 3 is preferably made of fiber composites such as carbon fiber, glass fiber, Kevlar, etc.

[0037] The following provides a production process for manufacturing the middle frame 3 in the luggage of this embodiment. This production process has the following three key points.

[0038] The first key point is that the middle frame 3 is mainly made of fiber composites such as carbon fiber, glass fiber, Kevlar, etc.

[0039] The second key point is that the fiber composite is a prepreg (the fiber composite is coated with a resin material on the surface, which can not only protect the surface texture of the fiber composite from being damaged, but also can be shaped without secondary resin filling).

[0040] The third key point is the manufacturing process. The manufacturing process is as follows:

[0041] ① Cut the fiber composite containing the prepreg resin according to the required shape. Except for the fiber composite with the surface (that is, the first surface layer and the second surface layer) being a whole, the 2-N layers filled in multiple layers (that is, the middle layer - one or more intermediate unit layers) can be connected in any way such as splicing and overlapping.

[0042] ② Place the spliced fiber composite on the mold, and the mold is provided with structural parts such as limit pins and limit posts to position the fiber composite.

[0043] ③Press the upper mold to fit and engage with the lower mold. Place the mold above the press, and the tabletop quickly heats the mold, softening and allowing the resins on the fiber composite material to penetrate each other. After a certain period of time, the resin will start to cure, and under the strong pressure of the mold, the excess resin material will also overflow. After reaching a certain time, the upper and lower molds can be released, and the completed product - the middle frame 3 can be taken out.

[0044] After the middle frame 3 is completed, the completed middle frame 3 can be installed on the corresponding front cover 1 / rear cover 2, and resin can be directly used for bonding. Then install other components, and finally complete the installation of the entire luggage.

[0045] The middle frame 3 produced by the above production process has the same strength as the metal frame material, but its weight is two-thirds lighter than that of the metal frame, and the mold cost is very low. The mold is a simple upper and lower pressing flat mold, and the mold has low requirements for steel materials. When making this mold, a series of steps such as a large amount of CNC machining, assembly, and polishing are not required. Compared with the injection mold, the cost is only one-tenth.

[0046] Although the luggage shown in this embodiment is a travel case, and the middle frame 3 was initially designed to solve the defects of the existing metal middle frame 3 and plastic middle frame 3 on the travel case, the middle frame 3 designed in this way can be applied not only to travel cases, but also to other luggage such as toolboxes and handbags.

[0047] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, provided that these changes fall within the scope of the claims of the present invention and its equivalent technologies, they still fall within the protection scope of the present invention.

Claims

1. A luggage case, characterized in that, It includes a front cover and a rear cover. After the front cover and the rear cover are closed, a chamber for accommodating an object is formed; a middle frame is provided at the edge of the front cover facing the rear cover direction and / or at the edge of the rear cover facing the front cover direction. When the front cover and the rear cover are closed, the middle frame is used to seal the closing joint; the middle frame is a multi-layer structure in the thickness direction. The multi-layer structure of the middle frame includes a first surface layer, an intermediate layer, and a second surface layer, and the first surface layer, the intermediate layer, and the second surface layer are all fiber composite material layers.

2. The luggage according to claim 1, wherein, The intermediate layer includes at least one intermediate unit layer; when the intermediate layer includes a plurality of the intermediate unit layers, the plurality of intermediate unit layers are arranged in the thickness direction of the middle frame.

3. The luggage according to claim 2, wherein, In the width direction of the middle frame, the number of the intermediate unit layers included in the intermediate layer is the same.

4. The luggage according to claim 2, wherein, In the width direction of the middle frame, the number of the intermediate unit layers included in the intermediate layer is different to adapt to the thickness change of the middle frame in the width direction.

5. The luggage according to claim 2, wherein, The first surface layer is formed by a complete fiber composite material piece, and the second surface layer is formed by a complete fiber composite material piece; The intermediate unit layer is: formed by a complete fiber composite material piece, or formed by splicing a plurality of fiber composite material pieces.

6. The luggage according to claim 4, characterized in that, The first surface layer is formed by a complete fiber composite material piece, and the second surface layer is formed by a complete fiber composite material piece; The intermediate layer is formed by splicing and connecting and lap jointing a plurality of fiber composite material pieces.

7. The luggage according to claim 2, wherein The adjacent layers of the multi-layer structure of the middle frame are adhesively connected.

8. The luggage according to claim 7, wherein The glue for the adhesive connection is resin.

9. The luggage according to claim 8, wherein A resin film is wrapped outside the multi-layer structure of the middle frame.

10. The luggage according to any one of claims 1 to 9, characterized in that, The middle frame is adhesively connected to the corresponding front cover or rear cover.

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