Waterproof inner case of storage box
By using a closed-loop square sealing strip and an L-shaped folded plate structure abutment platform inside the waterproof storage box, the problem of insufficient utilization of sealing rings in existing technologies is solved, achieving efficient waterproofing and long-term sealing integrity, reducing costs and improving assembly convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAISHAN PINGAN HARDWARE PROD CO LTD
- Filing Date
- 2025-08-22
- Publication Date
- 2026-08-04
AI Technical Summary
The existing waterproof storage box inner box has insufficient support and contact area at the joint between the box body and the box lid due to the orientation of the contact surface. This results in insufficient utilization of the sealing ring, uneven compression, and contact stability, leading to poor waterproof performance.
A waterproof inner box for a storage box was designed. It adopts a square structure with an open top. The box lid matches the opening at the top of the box. A square sealing strip with a closed ring and an L-shaped folded plate structure are set up to form an initial closed space. The cross-sectional width of the sealing strip is larger than the cross-sectional width of the abutment structure, which forms an initial closed space. It uses physical contact to prevent water penetration and forms the first sealing layer through mechanical fastening.
It improves waterproofing, reduces manufacturing and maintenance costs, enhances ease of assembly, reduces localized leakage points, and extends product lifespan, especially maintaining seal integrity in environments with vibration or temperature changes.
Smart Images
Figure CN224591999U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of safe deposit box technology, and in particular to a waterproof inner box for safe deposit boxes. Background Technology
[0002] A waterproof safe is a sealed storage container specifically designed to protect its contents from liquid water. It combines the security features of traditional safes (such as security boxes and lockers) with waterproof sealing technology, making it suitable for situations requiring protection against moisture, rain, splashes, and even short-term immersion. Specifically, the core purpose of existing waterproof safes is to resist liquid water: preventing rainwater, floods, splashes from living environments (such as bathrooms / kitchens), leaking pipes, and fire sprinkler water from entering the interior. Unlike ordinary "moisture-proof" safes (which only protect against moisture in the air), waterproof safes must withstand direct contact with liquid water, such as preventing liquid water from entering the interior during fire sprinkler operations. To achieve this, the sealing structure of waterproof safes typically relies on waterproof strips / sealing rings (such as rubber or silicone) installed on the door frame or the edge of the safe's opening. When the door / cover is closed, pressure is applied to deform the sealing strip, which fits tightly against the edge of the door, forming a physical barrier to block the water penetration path. At the same time, in conjunction with structural reinforcement, special treatments are applied to parts such as the box seams, keyholes, and hinges (such as welding, concealed hinges, and waterproof lock covers) to reduce water seepage points.
[0003] For multi-layered storage boxes, the waterproof inner box is generally a simple box structure consisting of a lid and a box body. The waterproof structure, i.e., the sealing ring, is usually set at the joint between the lid and the box body. However, in this type of waterproof inner box, the joint between the box body and the lid is difficult to support due to the orientation of the contact surface and insufficient contact area, resulting in problems such as insufficient utilization rate of the sealing ring, uneven compression, and insufficient contact stability, leading to poor actual waterproof effect. Utility Model Content
[0004] Therefore, it is necessary to provide a waterproof inner box for safe deposit boxes to address the technical problems of insufficient utilization of the waterproof structure and poor waterproof effect of existing waterproof inner boxes.
[0005] A waterproof inner box for a safe deposit box includes a box body, a lid, and a waterproof structure. The box body is a square box with an open top, and the lid corresponds to the opening at the top of the box body, so that the lid can be fastened to the top of the box body. The end face of the waterproof structure corresponding to the opening at the top of the box body is provided on the inner surface of the top wall of the lid, so that when the lid is fastened to the box body, the waterproof structure abuts against the end face of the opening at the top of the box body.
[0006] The box body is equipped with an abutment structure, which is located at the open edge of the top of the box body, thus forming a square frame abutment platform. When the box cover is fastened to the box body, the waterproof structure abuts against the top side surface of the abutment structure.
[0007] The waterproof structure is designed with a closed-loop square sealing strip for the abutment structure, and is smoothly attached to the inner edge of the top wall of the box lid; when the box lid is fastened to the box body, the bottom surface of the sealing strip fully contacts the top surface of the abutment structure.
[0008] The cross-sectional width of the sealing strip is greater than the cross-sectional width of the contact structure.
[0009] In one embodiment, the aforementioned abutment structure is configured as an L-shaped folding plate structure, with one folding plate of the abutment structure positioned parallel to the sealing strip on the inside of the opening at the top of the box; the inner edge of the abutment structure folds over and extends a predetermined distance toward the bottom of the box to form another folding plate.
[0010] In one embodiment, the aforementioned box cover is provided with a surrounding panel structure, which is provided on the side edge of the box cover in conjunction with the open outer wall of the top of the box body, thereby forming a mating structure with a certain depth; when the box cover is fastened to the box body, the surrounding panel structure fits onto the outer wall surface of the open top of the box body.
[0011] In one embodiment, the aforementioned enclosure structure and the box body are connected by an interference fit.
[0012] In one embodiment, the aforementioned waterproof inner box of the safe also includes several hinges, and the lid and the corresponding side of the box body are hinged together by several hinges.
[0013] In one embodiment, the aforementioned waterproof inner box of the safe deposit box includes two hinges, which are respectively disposed at both ends of the waterproof inner box in the horizontal direction.
[0014] In one embodiment, the aforementioned waterproof inner box of the safe also includes several buckles and several hinges, and the lid and the other corresponding side of the box body are engaged by several buckles.
[0015] In one embodiment, the aforementioned waterproof inner box of the safe deposit box includes two buckles, which are respectively disposed at both ends of the waterproof inner box in the horizontal direction.
[0016] In one embodiment, the aforementioned waterproof inner box of the safe also includes a handle, which is disposed on the outer surface of one end wall of the box.
[0017] In one embodiment, the bottom wall of the aforementioned box is provided with several support parts, which protrude outward from the bottom wall of the box to form a support structure with a certain height.
[0018] In one embodiment, the lid is made of 0.8mm thick stainless steel sheet; the body is made of 0.6mm thick stainless steel sheet.
[0019] The aforementioned waterproof inner box of the storage box forms an initial sealed space through the mechanical fastening of the lid and the box body, preventing direct intrusion of external moisture or liquids. The direct contact between the waterproof structure and the open end face creates the first sealing layer, using physical contact to block water penetration. Therefore, no external sealing structure is needed, reducing manufacturing and maintenance costs while improving assembly convenience. The contact structure provides a flat, continuous contact platform as a dedicated contact surface for the waterproof structure. This avoids uneven sealing caused by rough or irregular edges of the box opening, ensuring that the waterproof structure is evenly pressurized during fastening, reducing local leakage points. Simultaneously, the contact platform prevents the waterproof structure from deforming or shifting under pressure, maintaining long-term sealing integrity. Especially in environments with vibration or temperature changes, the platform structure helps disperse stress and prevent seal failure. The size matching between the contact structure and the sealing strip, with the sealing strip width > the contact structure width, provides a margin of error, reducing seal degradation due to manufacturing errors or wear and tear, and extending product life. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the waterproof inner box of the storage box in one embodiment; Figure 2 This is a schematic diagram of the waterproof inner box of the storage box in one embodiment; Figure 3 for Figure 2 A schematic cross-sectional view of part AA in the illustrated embodiment; Figure 4 for Figure 2 A schematic cross-sectional view of the BB portion in the illustrated embodiment; Figure 5 for Figure 4 An enlarged structural diagram of part C in the illustrated embodiment. Detailed Implementation
[0021] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0022] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0025] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0026] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0027] Please see Figures 1 to 5This utility model discloses a waterproof inner box 1 for a safe deposit box. The waterproof inner box 1 includes a box body 10, a lid 20, and a waterproof structure. The box body 10 is a square box body with an open top. The lid 20 is correspondingly fitted to the open top of the box body 10, so that the lid 20 can be fastened to the top of the box body 10 to form a closed box body 10. The end face of the waterproof structure corresponding to the open top of the box body 10 is set on the inner surface of the top wall of the lid 20. Thus, when the lid 20 is fastened to the box body 10, the waterproof structure abuts against the end face of the open top of the box body 10, thereby achieving a tight seal between the lid 20 and the box body 10, and thus achieving a waterproof function. Specifically, the box body 10 is provided with an abutment structure 11, which is located at the open edge of the top of the box body 10, thus forming a square frame abutment platform. When the box lid 20 is fastened to the box body 10, the waterproof structure abuts against the top surface of the abutment structure 11, thereby achieving full contact and abutment between the top open of the box body 10 and the waterproof structure. More specifically, the waterproof structure is configured as a closed ring-shaped square sealing strip 30 corresponding to the abutment structure 11, and is smoothly attached to the inner surface edge of the top wall of the box lid 20. When the box lid 20 is fastened to the box body 10, the bottom surface of the sealing strip 30 fully abuts against the top surface of the abutment structure 11, thereby increasing the effective contact and compression area between the sealing strip 30 and the abutment structure 11, and further enhancing the waterproof capability of the inner box 1 of the storage box. In one embodiment, the cross-sectional width of the sealing strip 30 is greater than the cross-sectional width of the abutting structure 11, thereby allowing the sealing strip 30 to have sufficient margin relative to the abutting structure 11 to fully utilize the abutting area of the abutting structure 11. Based on the above configuration, the waterproof inner box 1 of this utility model forms an initial closed space through the mechanical fastening of the box cover 20 and the box body 10, preventing external moisture or liquid from directly intruding. The direct contact between the waterproof structure and the open end face creates the first sealing layer, using physical contact to block water penetration. Thus, no external sealing structure is needed, reducing manufacturing and maintenance costs, while improving the ease of assembly. The abutment structure 11 provides a flat and continuous abutment platform as a dedicated contact surface for the waterproof structure. This avoids the problem of uneven sealing caused by the roughness or irregularity of the open edge of the box body 10, ensuring that the waterproof structure can be evenly pressurized when fastened, reducing local leakage points. At the same time, the abutment platform makes the waterproof structure less prone to deformation or displacement under pressure, maintaining long-term sealing integrity. Especially in environments with vibration or temperature changes, the platform structure helps to disperse stress and prevent seal failure. The size matching between the abutment structure 11 and the sealing strip 30, with the width of the sealing strip 30 > the width of the abutment structure 11, provides a margin of error, reduces seal degradation caused by manufacturing errors or wear and tear, and extends product life.
[0028] Furthermore, the abutment structure 11 is configured as an L-shaped folded plate structure, with one of the folded plates of the abutment structure 11 parallel to the sealing strip 30 and disposed on the inside of the opening at the top of the box body 10; the inner edge of the abutment structure 11 is folded and extended a predetermined distance toward the bottom of the box body 10 to form another folded plate, thereby ensuring the deformation resistance of the abutment structure 11 and providing a stable bonding force for the sealing strip 30.
[0029] Furthermore, the lid 20 is provided with a surrounding panel structure 21, which is set on the side edge of the lid 20 to cooperate with the open outer wall of the top of the box body 10, thereby forming a mating structure with a certain depth. When the lid 20 is fastened to the box body 10, the surrounding panel structure 21 fits onto the outer wall surface of the open top of the box body 10, thereby forming an external sealing structure relative to the waterproof structure. In one embodiment, the surrounding panel structure 21 and the box body 10 are connected by an interference fit, thereby further strengthening the tightness of the fit between the lid 20 and the box body 10 and enhancing the waterproof performance.
[0030] Furthermore, the waterproof inner box 1 of the safe deposit box also includes several hinges 40. The lid 20 and the corresponding side of the box body 10 are hinged together by the several hinges 40, so that the lid 20 can be opened relative to the box body 10 by flipping it open based on the several hinges 40. In one embodiment, the waterproof inner box 1 of the safe deposit box includes two hinges 40, and the two hinges 40 are respectively disposed at both ends of the waterproof inner box 1 in the horizontal direction.
[0031] Furthermore, the waterproof inner box 1 of the safe also includes several buckles 50. Corresponding to several hinges 40, the lid 20 is engaged with the other corresponding side of the box body 10 via several buckles 50, allowing the lid 20 to be locked to the box body 10 based on the several buckles 50. In one embodiment, the waterproof inner box 1 includes two buckles 50, and the two buckles 50 are respectively disposed at both ends of the waterproof inner box 1 in the horizontal direction.
[0032] Furthermore, the waterproof inner box 1 of the safe also includes a handle 60, which is set on the outer surface of one end wall of the box body 10, forming a force point during the handling of the waterproof inner box 1, thereby improving the mobility of the waterproof inner box 1.
[0033] Furthermore, the bottom wall of the box 10 is provided with several support parts 12. The several support parts 12 protrude outward from the bottom wall of the box 10 to form a support structure with a certain height, so as to avoid the bottom wall of the box 10 from directly contacting the ground.
[0034] Furthermore, in one embodiment, the lid 20 is made of 0.8mm thick stainless steel plate; the body 10 is made of 0.6mm thick stainless steel.
[0035] In summary, the waterproof inner box of the storage box disclosed in this utility model forms an initial closed space through the mechanical fastening of the box lid and the box body, preventing direct intrusion of external moisture or liquids. The direct contact between the waterproof structure and the open end face creates the first sealing layer, using physical contact to block water penetration. Thus, no external sealing structure is needed, reducing manufacturing and maintenance costs while improving assembly convenience. The abutment structure provides a flat and continuous abutment platform as a dedicated contact surface for the waterproof structure. This avoids the problem of uneven sealing caused by rough or irregular edges of the box body opening, ensuring that the waterproof structure is evenly pressurized during fastening, reducing local leakage points. At the same time, the abutment platform makes the waterproof structure less prone to deformation or displacement under pressure, maintaining long-term sealing integrity. Especially in environments with vibration or temperature changes, the platform structure helps to disperse stress and prevent seal failure. The size matching between the abutment structure and the sealing strip, with the width of the sealing strip > the width of the abutment structure, provides a margin of error, reducing seal degradation caused by manufacturing errors or wear and tear, and extending product life.
[0036] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0037] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A waterproof inner box for a safe deposit box, characterized in that, include: The box body, lid, and waterproof structure are designed as a square box with an open top. The lid corresponds to the opening at the top of the box body, so that the lid can be fastened to the top of the box body. The end face of the waterproof structure corresponding to the opening at the top of the box body is set on the inner surface of the top wall of the lid. Thus, when the lid is fastened to the box body, the waterproof structure abuts against the end face of the opening at the top of the box body. The box body is equipped with an abutment structure, which is located at the open edge of the top of the box body, thus forming a square frame abutment platform. When the box lid is fastened to the box body, the waterproof structure abuts against the top side surface of the abutment structure. The waterproof structure is designed with a closed-loop square sealing strip for the abutment structure, and it is smoothly attached to the inner edge of the top wall of the box lid; when the box lid is fastened to the box body, the bottom surface of the sealing strip fully contacts the top surface of the abutment structure. The cross-sectional width of the sealing strip is greater than the cross-sectional width of the contact structure.
2. The waterproof inner box of the safe deposit box according to claim 1, characterized in that, The abutment structure is set as an L-shaped folded plate structure, with one of the folded plates of the abutment structure parallel to the sealing strip and set on the inside of the opening at the top of the box; the inner edge of the abutment structure folds over and extends a predetermined distance towards the bottom of the box to form another folded plate.
3. The waterproof inner box of the safe deposit box according to claim 2, characterized in that, The lid is equipped with a surrounding panel structure, which is set on the side edge of the lid to cooperate with the open outer wall of the top of the box, thus forming a fitting structure with a certain depth; when the lid is fastened to the box, the surrounding panel structure fits onto the outer wall surface of the open top of the box.
4. The waterproof inner box of the safe deposit box according to claim 3, characterized in that, The enclosure structure and the box body are connected by an interference fit.
5. The waterproof inner box of the safe deposit box according to claim 4, characterized in that, The waterproof inner box of the safe also includes several hinges, and the lid and the corresponding side of the box body are hinged together by several hinges.
6. The waterproof inner box of the safe deposit box according to claim 5, characterized in that, The waterproof inner box of the safe includes two hinges, which are respectively located at both ends of the waterproof inner box in the horizontal direction.
7. The waterproof inner box of the safe deposit box according to claim 6, characterized in that, The waterproof inner box of the safe also includes several buckles and several hinges. The lid and the corresponding side of the box body are connected by several buckles.
8. The waterproof inner box of the safe deposit box according to claim 7, characterized in that, The waterproof inner box of the safe includes two buckles, which are respectively located at both ends of the waterproof inner box in the horizontal direction.
9. The waterproof inner box of the safe deposit box according to claim 8, characterized in that, The waterproof inner box of the safe also includes a handle, which is located on the outer surface of one end wall of the box.
10. The waterproof inner box of the safe deposit box according to claim 9, characterized in that, The bottom wall of the box is provided with several support parts, which protrude outward from the bottom wall of the box to form a support structure with a certain height.