A double-shell compatible top rotary opening and closing storage cabinet

Abstract

A double-shell compatible top rotary opening and closing storage cabinet body belongs to the technical field of storage cabinet body structure. The vertical cylindrical straight cylinder cabinet body is the core basis implementation form, which can also adapt to the oblique shrinkage cone fully enclosed side wall structure without lateral door opening. The horizontal top disc of the T-shaped stainless steel middle shaft is provided with a through hole, the upper end of the vertical shaft rod is precisely penetrated through the through hole and is fixed by end welding, the welding seam avoids the stress concentration area of the rotating shaft corner, the upper and lower dislocation double support point rotating structure is formed by the wall-mounted bearing on the inner side wall and the bottom plate seated bearing, and the top rotary opening and closing is realized. The technical problems of the traditional top rotary cabinet body, such as the difficulty in adapting the cone cylinder shell based on the straight cylinder structure, the easy interference of the upper end bearing, the single support point rotary eccentric warping, the easy fatigue fracture of the rotating shaft, the difficulty in forming the special-shaped shell, and the easy sliding of the ornament are solved. The double-bearing function division is clear, the rotating shaft connection structure has excellent anti-fracture performance, the structure has strong synergistic property, the straight cylinder cabinet body is the core protection object, the cone cylinder cabinet body is the equivalent adaptation scheme, the rotation is stable, the structure has high strength, the appearance has good integrity, the forming is convenient and the anti-slip fixing can be lossless, and the cabinet body has wide adaptability.

Description

Technical Field

[0001] This invention belongs to the field of cultural and creative storage cabinet structure technology, specifically involving a fully enclosed top-rotating opening and closing storage cabinet with a vertical cylindrical shell as its basic form, compatible with a narrow-at-the-top and wide-at-the-bottom obliquely tapered shell, and employing upper and lower staggered double bearing positioning and T-shaped central shaft transmission. Background Technology

[0002] Existing integrated storage cabinets, especially those with uniquely designed cultural and creative storage cabinets, generally suffer from structural and technical defects:

[0003] 1. To ensure the integrity of the cabinet's appearance, there is a contradiction in the industry's conventional design: if there are no cabinet doors on the side walls, it is impossible to take out or put in items; if cabinet doors are added, the continuity of the overall curved surface of the shell is disrupted, resulting in a broken shape and poor overall integrity.

[0004] 2. Existing top-rotating cover structures typically have their rotary bearings mounted on the upper end face of the cylinder, making them only suitable for single-diameter straight cylindrical shells. For obliquely tapered cylindrical shells that are narrower at the top and wider at the bottom, the upper end diameter is constricted and the space is limited, making it easy for the bearings on the upper end face to cause structural interference, thus rendering them unsuitable. Therefore, existing rotary cover structures cannot simultaneously accommodate both straight and tapered shell shapes, resulting in poor versatility.

[0005] 3. Conventional rotating structures often use slender straight shafts and single-point bearings for positioning. For square top covers with large lateral dimensions, the support area is small and the stress is concentrated. Long-term use can easily lead to mechanical defects such as cover plate warping, rotational eccentricity, swaying and jamming, and increased gaps. At the same time, the connection between conventional shafts and top covers is mostly single-point fastening. Stress concentration is likely to occur at the root of the shaft. Long-term reciprocating rotation can easily cause fatigue cracks or even breakage.

[0006] 4. It is difficult to form curved cylindrical and conical irregular shells using conventionally cut plates, resulting in poor overall structure integrity, numerous splicing marks, and insufficient stability.

[0007] 5. The placement surface of the decorative cabinet is easily slipped by slight external force. It is fixed with glue and cannot be disassembled, which will damage the countertop. The suction cup has poor compatibility and lacks a non-slip fixing structure that can be repeatedly disassembled and reassembled without damage.

[0008] In summary, what is currently lacking is an integrated storage cabinet structure that features completely enclosed side walls without doors, a straight-tube cabinet as its basic structure, expandable and adaptable to conical shells, a large-sized square top cover that rotates smoothly without warping, a hinge that resists fatigue fracture, an irregularly shaped shell that is easy to mold, and a non-destructive, anti-slip fixing mechanism. Summary of the Invention

[0009] 1. The technical problem to be solved

[0010] This invention aims to solve the technical problems of existing top-rotating storage cabinets, such as the inability to simultaneously accommodate conical shells while using a straight cylindrical structure, easy interference in the arrangement of upper bearings, eccentric warping of the square top cover due to single-axis single-point support, stress concentration at the root of the rotating shaft leading to rotational fracture, difficulty in molding irregularly shaped shells, and easy slippage of ornaments. It provides a dual-shell compatible top-rotating opening and closing storage cabinet. Under the premise of fully enclosed side walls and no external opening, the straight cylindrical cabinet is the core implementation form, and the conical shell is also compatible with all the structures of this invention. It achieves universality of two shells, stable rotation operation, fatigue fracture resistance of the rotating shaft, high structural strength, convenient molding, and anti-slip fixation for placement.

[0011] 2. Technical Solution

[0012] A dual-shell compatible top-rotating opening and closing storage cabinet includes a cabinet body, which includes a circular base plate, hollow side walls, and a square top cover;

[0013] The hollow sidewall is preferably a vertical cylindrical straight tube structure, or it can be a sloping tapered cone structure that is narrow at the top and wide at the bottom. The lower end of the hollow sidewall is fixedly connected to a circular base plate. The hollow sidewall forms a hollow storage cavity inside. The outer surface of the hollow sidewall is a fully enclosed continuous curved surface with no external cabinet doors or side access openings.

[0014] The square top cover fits over the opening at the upper end of the hollow sidewall;

[0015] A rotating assembly is fixedly mounted at the bottom of the square top cover;

[0016] The rotating assembly includes a T-shaped stainless steel central shaft, a wall-mounted bearing, and a floor-mounted bearing.

[0017] The T-shaped stainless steel central shaft is integrally formed, including an upper horizontal top plate and a lower vertical shaft.

[0018] The horizontal top plate is fixedly attached to the bottom surface of the square top cover. A through hole is provided on the horizontal top plate. The upper end of the vertical shaft precisely passes through the through hole of the horizontal top plate. The two are coaxially centered and positioned by high-precision clearance fit. After the vertical shaft passes through, continuous and dense welding is performed at the through hole port of the horizontal top plate. The weld is far away from the corner where the horizontal top plate and the vertical shaft meet. The weld is flat and full, without false welds, slag inclusions, air holes and stress gaps, so that the horizontal top plate and the vertical shaft of the T-shaped stainless steel central shaft form a rigid integral connection.

[0019] The wall-mounted bearing is fixedly installed on the upper part of the inner sidewall of the hollow sidewall, forming a radial limit on the upper end of the vertical shaft;

[0020] The ground-mounted bearing is fixedly installed on the upper surface of the circular base plate, forming radial limiting and axial support for the lower end of the vertical shaft;

[0021] The square top cover forms a double-support positioning and rotating structure with a T-shaped stainless steel central shaft, wall-mounted bearings, and floor-mounted bearings. It can rotate and shift horizontally relative to the hollow sidewalls to expose or close the upper opening of the hollow storage cavity, enabling the retrieval and placement of items without side openings. Regardless of whether the hollow sidewalls are cylindrical or conical, the assembly method, force principle, and rotation working mode of the above-mentioned rotating components are completely consistent, and they can all operate stably.

[0022] Furthermore, the bottom surface of the circular base plate is selectively provided with two removable adhesive surfaces, which enable non-destructive anti-slip positioning of the cabinet through removable adhesive. The adhesive can be peeled off, re-attached, and does not damage the placement surface.

[0023] Furthermore, the wall-mounted bearing only provides radial constraint to the upper end of the shaft and does not bear axial load; the floor-mounted bearing simultaneously bears the radial limit at the lower end and the axial gravity load of the overall top cover. The functions of the upper and lower bearings are staggered and divided, which can be adapted to both the straight cylinder cavity of equal diameter and the tapered cylinder cavity that narrows at the upper end.

[0024] Furthermore, the transverse top plate of the T-shaped stainless steel central shaft expands the contact and support area with the square top cover, dispersing the load on the top cover and suppressing local warping deformation of the cover plate; the connection structure of the vertical shaft and the transverse top plate through hole with precision fit and end welding makes the T-shaped shaft have strong overall connection rigidity, with no stress concentration at the junction corner during rotation, and no fatigue cracks or fracture failure will occur during long-term reciprocating rotation. This fracture-resistant structure can be stably implemented in both straight and conical shells.

[0025] Furthermore, the outer side of the cabinet is integrally molded with a decorative end structure to adapt to the creative design.

[0026] 3. Beneficial effects

[0027] Compared with the prior art, the present invention has the following core technological advancements:

[0028] 1. Based on a straight cylindrical cabinet as the core structure, while also compatible with a conical shell: the upper bearing is arranged on the upper part of the inner side wall and the lower bearing is arranged on the bottom plate, avoiding the limitation of the upper port diameter of the cylinder. The straight cylindrical shell has sufficient assembly space, and the conical shell is not affected by the small diameter at the upper end. This breaks through the structural limitation that the traditional upper end bearing cannot be compatible with the conical shell, greatly improving the versatility. Both types of shells fall within the protection scope of this invention.

[0029] 2. The upper and lower staggered dual bearings have a functional division of labor and greatly improve the stability of operation: the upper wall-mounted bearing is anti-sway and stabilizing, while the lower ground bearing is load-bearing and limiter. The dual support points completely solve the mechanical problems of single-point rotation eccentricity, shaking, jamming, and warping of large-size square top covers. It has high rotational accuracy and strong durability, and both straight and conical shells can achieve smooth rotation.

[0030] 3. Optimized stress distribution of the T-shaped central shaft structure + welded connection structure with through hole in the transverse top plate: Compared with ordinary straight shafts, the T-shaped top plate significantly increases the support contact area, evenly distributing the self-weight of the top cover and the pressing load; the vertical shaft precisely passes through the through hole in the transverse top plate and is fixed by welding at the end. The weld avoids the stress concentration area at the shaft corner, and the shaft only bears a uniform rotational torque. The vertical load is borne by the ground-mounted bearing. There is no stress concentration at the T-shaped junction, completely avoiding the risk of fatigue fracture due to long-term rotation. The structural strength and fatigue resistance are significantly improved. This structure has the same technical effect in both types of shells.

[0031] 4. Fully enclosed sidewalls with no side openings: Without compromising the complete curved surface appearance of the shell, storage and retrieval are achieved by rotating the top, resolving the industry contradiction of the incompatibility between shape and function. Both straight and conical shells can maintain their appearance integrity.

[0032] 5. The multi-layer solid wood substrate hot pressing and shaping process can form a straight and complete cylinder in one step, or a conical or irregular curved cylinder. There are no splicing gaps, the irregular shell is easy to form, the integrity is strong, and the structure is stable.

[0033] 6. Optional two-sided removable adhesive structure to achieve non-slip fixation of ornaments without damage. It can be repeatedly disassembled and reassembled without residue or damage to the furniture surface, and is suitable for two types of cabinets.

[0034] This invention achieves comprehensive technical effects that cannot be achieved by existing technologies through the organic synergy of shell structure, bearing misalignment, dual-support positioning, T-shaped load dispersion structure, welded fracture-resistant structure with transverse top plate through hole of rotating shaft, and irregular plate forming process. It is not a simple superposition of components. The vertical cylindrical straight cabinet is the core implementation of this invention, and the obliquely contracting conical shell is an equivalent alternative implementation, both of which are protected by this invention patent. Attached Figure Description

[0035] Figure 1 Schematic diagram of the overall assembly structure of the present invention;

[0036] Figure 2 Schematic diagram of the cylindrical straight shell structure of the present invention;

[0037] Figure 3 Schematic diagram of the obliquely contracting cone shell structure of the present invention;

[0038] Figure 4 Longitudinal cross-sectional assembly structure diagram of the present invention;

[0039] Figure 5 Diagram showing the square top cover in its rotated-open state;

[0040] Figure 6 Schematic diagram of the overall structure of the T-shaped rotating assembly;

[0041] Figure 7 Schematic diagram of removable adhesive assembly at the bottom of the circular base plate.

[0042] Label Explanation:

[0043] 1- Circular base plate; 11- Double-sided removable adhesive surface; 2- Hollow side wall; 21- Cylindrical straight shell; 22- Sloping conical shell; 3- Square top cover; 4- Hollow storage cavity; 5- Rotating assembly; 51- T-shaped stainless steel central shaft; 511- Horizontal top plate; 5111- Horizontal top plate through hole; 512- Vertical shaft; 52- Wall-mounted bearing; 53- Floor-mounted bearing; 6- Decorative end; 7- Weld. Detailed Implementation

[0044] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Embodiment 1 is the straight-cylinder cabinet structure that is the core protected by the present invention, and Embodiment 2 is an equivalent implementation structure of the conical cabinet. Both of them adopt all the technical solutions of the present invention and fall within the scope of patent protection.

[0045] Example 1: Cylindrical Straight Shell Structure

[0046] The main body of the cabinet consists of a circular base plate, a cylindrical hollow side wall, and a square top cover. The cylinder has equal diameters at the top and bottom, smooth and closed inner and outer walls, and no lateral openings, which is the basic embodiment of this invention. A through hole is opened on the horizontal top plate of the T-shaped stainless steel central shaft. The upper end of the vertical shaft is precisely inserted into the through hole of the horizontal top plate. The two are fitted with a high-precision clearance to ensure coaxiality. Then, continuous and dense welding is performed at the end of the through hole. The weld is far away from the corner of the T-shaped shaft, so that the horizontal top plate and the vertical shaft are rigidly fixed as one unit.

[0047] The horizontal top plate of the T-shaped stainless steel central shaft is fixedly attached to the bottom surface of the square top cover over a large area. The upper end of the vertical shaft is radially limited by the wall-mounted bearing on the upper part of the inner side wall, and the lower end of the vertical shaft is supported and limited by the floor-mounted bearing on the base plate.

[0048] During rotation, the double-pivot system restricts swaying, allowing the top cover to rotate smoothly and horizontally. After offsetting, the opening at the top of the cavity is exposed for easy loading and unloading. Upon resetting, the top is closed, resulting in a complete and continuous appearance of the housing. The shaft only bears the rotational torque, while its own weight is supported by a ground-mounted bearing. There is no stress concentration at the T-shaped corners and weld seams, ensuring that long-term repeated rotation will not cause cracks or breakage. The overall structure is stable and reliable.

[0049] Example 2: Inclined contracting conical shell structure

[0050] The hollow sidewall adopts a sloping tapered cone structure that is narrower at the top and wider at the bottom, with the upper port diameter being smaller than the lower port diameter. This embodiment uses the same rotating components, connecting structures, and bearing arrangements as Embodiment 1. Since the bearings of this invention are respectively arranged on the upper part of the inner sidewall and the bottom plate, they do not occupy the space on the upper end face of the cylinder and are not limited by the small diameter of the upper end. Therefore, they can be assembled normally and rotate stably, successfully achieving compatibility with the cone shell structure.

[0051] In this embodiment, the shell is integrally formed by hot pressing of multiple layers of solid wood substrate, with continuous curved surfaces without splicing; the T-shaped central shaft also adopts a horizontal top plate through hole fit + vertical shaft end welding fixation, the connection is firm, the shaft has excellent fatigue fracture resistance performance, and has the same technical effect as the straight cylinder cabinet, falling within the protection scope of this invention.

[0052] Example 3 Anti-slip fixing assembly

[0053] In scenarios where positioning is required, a single or separate piece of removable adhesive is pasted onto the bottom surface of the circular base plate to ensure the cabinet fits firmly against the surface and prevents slippage. When no longer needed, the adhesive can be removed directly without leaving any residue or damaging the countertop. This structure is suitable for both cylindrical and conical cabinets.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

[0055] Keywords

[0056] Dual-shell compatibility; misaligned double bearings; T-shaped central shaft; welded through-hole on the transverse top plate; fatigue fracture resistant; top rotating opening and closing; fully enclosed; straight cylindrical cabinet; tapered cylindrical cabinet; hot-pressed shaping; non-destructive anti-slip.

Claims

1. A dual-shell compatible top-rotating opening and closing storage cabinet, comprising a cabinet body, characterized in that; The main body of the cabinet includes a circular base plate, hollow side walls, and a square top cover. The hollow side walls are vertical cylindrical structures or obliquely tapered structures that are narrower at the top and wider at the bottom. The lower end of the hollow side walls is fixedly connected to the circular base plate, forming a hollow storage cavity inside. The outer surface of the hollow side walls is a fully enclosed continuous curved surface without external cabinet doors or side access openings. A rotating assembly is fixedly mounted at the bottom of the square top cover. The rotating assembly includes a T-shaped stainless steel central shaft, a wall-mounted bearing, and a floor-mounted bearing. The T-shaped stainless steel central shaft is integrally formed and includes a horizontal top plate and a vertical shaft. A through hole is opened on the horizontal top plate, and the upper end of the vertical shaft precisely passes through the through hole of the horizontal top plate and through the through hole. The weld at the port is rigidly fixed to the horizontal top plate, and the weld is far away from the intersection corner of the horizontal top plate and the vertical shaft. The horizontal top plate is fixedly attached to the bottom surface of the square top cover. The wall-mounted bearing is installed and fixed on the upper part of the inner side wall of the hollow side wall to radially limit the upper end of the vertical shaft. The ground-mounted bearing is fixedly installed on the upper surface of the circular base plate to radially limit the lower end of the vertical shaft and bear axial load. The square top cover realizes horizontal rotation opening and closing through the upper and lower double bearing staggered positioning structure, and realizes the operation of taking out and putting in the storage cavity through the top rotation offset. The vertical cylindrical straight tube structure is the basic embodiment of the present invention, and the oblique shrinking cone structure is an equivalent adaptation form, both of which are applicable to all the technical features of the present invention.

2. The dual-shell compatible top-rotating opening and closing storage cabinet according to claim 1, characterized in that: The wall-mounted bearing and the floor-mounted bearing are arranged in a staggered manner and have different functions. The upper part only provides radial limiting, while the lower part provides both radial limiting and axial bearing. It is also compatible with two types of internal cavity structures: vertical cylindrical shell and oblique conical shell.

3. The dual-shell compatible top-rotating opening and closing storage cabinet according to claim 1, characterized in that: The transverse top plate of the T-shaped stainless steel central shaft increases the supporting contact area with the square top cover, dispersing the load on the top cover and suppressing the rotational warping and local deformation of the square top cover; the through hole of the vertical shaft and the transverse top plate is a precision clearance fit, there are no stress gaps at the welded parts, there is no stress concentration at the T-shaped junction, and the shaft will not experience fatigue fracture during long-term rotation under both straight and conical shell conditions.

4. The dual-shell compatible top-rotating opening and closing storage cabinet according to claim 1, characterized in that: The hollow sidewall is integrally bent and formed by a multi-layer solid wood substrate using an overall hot-pressing shaping process. It can be formed into a vertical cylindrical structure or an obliquely contracting conical structure, forming a seamless irregular curved cylindrical structure.

5. The dual-shell compatible top-rotating opening and closing storage cabinet according to claim 1, characterized in that: The circular base plate is selectively fitted with two removable adhesive surfaces on its bottom surface, enabling non-destructive anti-slip positioning of the cabinet. It is removable and reusable, and is suitable for both cylindrical and conical cabinets.

6. The dual-shell compatible top-rotating opening and closing storage cabinet according to claim 1, characterized in that: The exterior of the cabinet is integrally molded and has a decorative end structure.

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