Double-layer waist-exposed iron box

Abstract

The utility model provides a double-layer waist-exposed iron box, which relates to the technical field of metal box body structures, and comprises a double-layer waist-exposed iron box main body, a plurality of vertical pressing ribs are distributed on the inner wall of the double-layer waist-exposed iron box main body along the circumferential direction at equal intervals, and are used for enhancing the deformation resistance of the side wall; an upper annular firm waist frame and a lower annular firm waist frame are fixed to the inner wall of the double-layer waist-exposed iron box body through resistance spot welding, the four corners of each annular firm waist frame are rigidly connected through metal connecting frames, and the included angle metal connecting frames are attached to the corners of the double-layer waist-exposed iron box body in a matched mode to form an overall reinforcing frame. The vertical pressing ribs, the annular firm waist frame, the included angle metal connecting frames and the like are arranged on the inner wall of the double-layer waist-exposed iron box main body, so that an integral reinforcing frame is formed; and the integral strength and the protection performance of the iron box are effectively enhanced while the outer waist line groove design is reserved to meet the attractive appearance or other design requirements.

Description

Technical Field

[0001] This utility model relates to the field of metal box structure technology, and in particular to a double-layer exposed waist iron box. Background Technology

[0002] Double-layered iron boxes, commonly found on the market, are widely welcomed for their excellent protective performance and practicality. They are moisture-proof and oxygen-resistant, effectively protecting items such as tea and metal handicrafts. They also have high pressure and drop resistance, making them suitable for protecting precision electronic components from damage. From an environmental perspective, iron materials are not only recyclable but also reduce packaging waste, giving them advantages in environmental protection and sustainable development.

[0003] However, when adding decorative waistlines to double-layered tin boxes to meet aesthetic or other design (advertising) requirements, the design of the waistlines often weakens the overall strength of the tin box. Therefore, we need a double-layered tin box structure. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology and maintain sufficient strength and protective performance while retaining the waistline.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A double-layer exposed waist iron box includes a double-layer exposed waist iron box body, wherein the inner wall of the double-layer exposed waist iron box body is equidistantly distributed with several vertical pressure ribs along the circumference to enhance the deformation resistance of the side wall.

[0007] The inner wall of the double-layer exposed waist iron box is fixed with two sets of upper and lower annular sturdy waist frames by resistance spot welding. The four corners of the annular sturdy waist frames are rigidly connected by metal connecting frames. The angled metal connecting frames are adapted to fit the corners of the double-layer exposed waist iron box body to form an overall reinforced frame.

[0008] Furthermore, the main body of the double-layer exposed waist iron box is composed of a double-layer iron box frame welded inside and out, and a waistline groove is opened around the middle of the outer iron box frame.

[0009] Furthermore, the top of the inner layer of the double-layer exposed iron box body is provided with an annular snap-fit ​​protrusion that is higher than the outer layer, for interference fit with the slot of the box lid.

[0010] Furthermore, the upper and lower annular sturdy waist frames correspond to the upper and lower waistline grooves and the outer layer of the double-layer exposed waist iron box body, respectively.

[0011] Furthermore, the vertical ribs are integrally formed by deep drawing, and the depth of the ribs is 1.2-1.5 times the thickness of the sidewall.

[0012] Furthermore, the thickness of the vertical rib in the welding area with the annular rigid waist frame is reduced to 50% of the original thickness, forming a welding mating surface.

[0013] Furthermore, the upper and lower edges of the annular sturdy waist frame are integrally extended with transition waist frames, which are inclined at 15°-30° from the annular sturdy waist frame toward the inner wall of the double-layer exposed waist iron box body, and their ends are continuously welded to the inner wall.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model forms an integral reinforced frame by setting vertical pressure ribs, a ring-shaped sturdy waist frame and a metal connecting frame at an angle on the inner wall of the double-layer exposed waist iron box body;

[0016] While retaining the outer waistline groove design to meet aesthetic or other design requirements, it effectively enhances the overall strength and protective performance of the tin box, enabling it to better resist deformation and damage when subjected to external forces, ensuring the safety of the contents. At the same time, this design also takes into account the advantages of environmental protection and sustainable development, as the iron material is recyclable, reducing the generation of packaging waste. Attached Figure Description

[0017] Figure 1 A schematic diagram of the overall structure of a double-layer exposed waist iron box provided by this utility model;

[0018] Figure 2 A partial enlarged structural diagram of a double-layer exposed iron box provided by this utility model;

[0019] Figure 3 A schematic diagram of the side wall of the main body of a double-layer exposed waist iron box provided for this utility model;

[0020] Figure 4 This is a magnified schematic diagram of a partial structure (B) of a double-layer exposed waist iron box provided by this utility model. Legend: 1. Main body of the double-layer exposed waist iron box; 11. Waistline groove; 12. Annular snap-fit ​​protrusion;

[0021] 2. Vertical reinforcement;

[0022] 3. Circular sturdy waist frame; 31. Transition waist frame;

[0023] 4. Metal connecting frame. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Example 1

[0029] like Figure 1-4 As shown, this utility model provides a technical solution: a double-layer exposed waist iron box, including a double-layer exposed waist iron box body 1, and a number of vertical pressure ribs 2 are distributed equidistantly along the circumference of the inner wall of the double-layer exposed waist iron box body 1. These vertical pressure ribs 2 are integrally formed by deep drawing process, and their function is to significantly enhance the deformation resistance of the side wall, so as to ensure that the iron box can better maintain its original shape when subjected to external force squeezing or collision, and protect the safety of the internal items.

[0030] The inner wall of the double-layer exposed waist iron box body 1 is fixed with two sets of upper and lower ring-shaped sturdy waist frames 3 by resistance spot welding. The four corners of the ring-shaped sturdy waist frames 3 are rigidly connected by angled metal connecting frames 4. The shape of the angled metal connecting frames 4 is perfectly matched and fits the corners of the double-layer exposed waist iron box body 1, thus forming an overall reinforced frame, which further improves the overall structural strength and stability of the iron box.

[0031] Example 2

[0032] like Figure 1-4 As shown, the double-layer exposed waist iron box body 1 is composed of a double-layer iron box frame by welding inside and outside. The outer iron box frame has a waist groove 11 around the middle. The waist groove 11 not only has a certain decorative function, used to add customized designs such as advertising patterns, but also makes it more stable to hold from the outside.

[0033] The inner top of the double-layer exposed iron box body 1 is higher than the outer top and has an annular snap-fit ​​protrusion 12. This annular snap-fit ​​protrusion 12 is used to make an interference fit with the slot of the box lid to ensure that the box lid and the iron box body are tightly connected.

[0034] The central axes of the upper and lower ring-shaped sturdy waist frame 3 correspond to the upper and lower waist grooves 11 and the outer layer of the double-layer exposed waist iron box body 1, respectively, to avoid the decrease in strength of the transition area waist groove 11.

[0035] The vertical rib 2 is integrally formed through deep drawing. The depth of the rib is set to 1.2-1.5 times the thickness of the side wall. This ensures that the vertical rib 2 enhances the deformation resistance of the side wall without causing too much impact on the overall structure of the iron box due to excessive rib depth. At the same time, the thickness of the vertical rib 2 in the welding area with the annular sturdy waist frame 3 is reduced to 50% of the original thickness, forming a dedicated welding mating surface, which is conducive to the smooth progress of welding operations and ensures welding quality.

[0036] The upper and lower edges of the ring-shaped sturdy waist frame 3 are integrally extended with transition waist frames 31. The transition waist frames 31 are inclined at 15°-30° from the ring-shaped sturdy waist frame 3 toward the inner wall of the double-layer exposed waist iron box body 1. Its ends are continuously welded to the inner wall. This inclined transition waist frame 31 design can better disperse stress, reduce stress concentration, and further improve the structural strength and durability of the iron box.

[0037] The working process of this utility model is as follows: When using a double-layer exposed waist iron box, first carefully place the items to be stored into the double-layer exposed waist iron box body 1, then pick up the box lid, align the slot on the box lid with the annular snap-fit ​​protrusion 12 at the top of the inner layer of the double-layer exposed waist iron box body 1, press the box lid firmly so that the annular snap-fit ​​protrusion 12 and the box lid slot achieve an interference fit, ensuring that the box lid is tightly closed on the iron box body;

[0038] At this point, the double-layer exposed waist iron box has completed the storage and sealing of the items, and can be used for subsequent steps such as handling and storage. During handling or storage, the double-layer exposed waist iron box, with its unique vertical pressure ribs 2, ring-shaped sturdy waist frame 3 and angled metal connecting frame 4, can effectively resist external pressure and collisions, protecting the internal items from damage.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-layered exposed-waist iron box, comprising a double-layered exposed-waist iron box body (1), characterized in that: The inner wall of the double-layer exposed iron box body (1) has several vertical ribs (2) distributed equidistantly along the circumference to enhance the deformation resistance of the side wall; The inner wall of the double-layer exposed waist iron box body (1) is fixed with two sets of upper and lower annular sturdy waist frames (3) by resistance spot welding. The four corners of the annular sturdy waist frame (3) are rigidly connected by angled metal connecting frames (4). The angled metal connecting frames (4) are adapted to fit the corners of the double-layer exposed waist iron box body (1) to form an overall reinforced frame.

2. The double-layered exposed-waist iron box according to claim 1, characterized in that: The double-layer exposed waist iron box body (1) is composed of a double-layer iron box frame welded inside and out, and a waist groove (11) is opened around the middle of the outer iron box frame.

3. A double-layered exposed-waist iron box according to claim 2, characterized in that: The inner top of the double-layer exposed iron box body (1) is higher than the outer top and has an annular snap-fit ​​protrusion (12) for interference fit with the slot of the box cover.

4. A double-layered exposed-waist iron box according to claim 2, characterized in that: The central axis of the upper and lower ring-shaped sturdy waist frame (3) corresponds to the upper and lower waistline grooves (11) and the outer layer of the double-layer exposed waist iron box body (1), respectively.

5. A double-layered open-waist iron box according to claim 1, characterized in that: The vertical rib (2) is integrally formed by deep stamping process, and the depth of the rib is 1.2-1.5 times the thickness of the side wall.

6. A double-layered exposed-waist iron box according to claim 1, characterized in that: The thickness of the vertical rib (2) in the welding area with the annular rigid waist frame (3) is reduced to 50% of the original thickness to form a welding mating surface.

7. A double-layered exposed-waist iron box according to claim 1, characterized in that: The upper and lower edges of the annular sturdy waist frame (3) are integrally extended with a transition waist frame (31). The transition waist frame (31) is inclined at 15°-30° from the annular sturdy waist frame (3) toward the inner wall of the double-layer exposed waist iron box body (1), and its end is continuously welded to the inner wall.

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