Layered storage device

By designing a layered storage device, using the rotating shaft and positioning column structure, the problem of insufficient placement of existing fruit plates is solved, effective use of space and convenient access to items is achieved, and storage effect is improved.

CN111759146BActive Publication Date: 2024-12-31YIWU YUEXIN MOULD TECH CO LTD
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Patent Information

Application Number
CN202010641929.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2020-07-06
Publication Date
2024-12-31
Estimated Expiration
2040-07-06

AI Technical Summary

Technical Problem

Due to the small amount of placement of existing fruit trays, the types of snacks are reduced, the space occupancy is increased, and the storage effect is not good.

Method used

A layered storage device is designed, including an upper disk, a lower disk and a rotating shaft. The upper disk and the lower disk are driven to stagger the upper disk and the lower disk through the rotating shaft, increasing the placement space, and realizing the upper disk and the lower disk through the positioning column and the limiting slot. Separate and fix, forming a multi-layer storage structure.

Benefits of technology

The space occupied is small in the closed state, and can be expanded into two upper and lower plates after opening, which increases the convenience of placing and accessing items and improves the storage effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to the technical field of storage devices and discloses a layered storage device, comprising an upper plate, a lower plate and a rotating shaft; the upper plate and the lower plate are sequentially sleeved on the rotating shaft from top to bottom, the upper plate is movably connected to the rotating shaft, and the lower plate is relatively fixedly arranged with the rotating shaft; the upper plate has an inner side wall facing the rotating shaft, a positioning column is provided on the inner side wall of the upper plate, and a limiting groove with an opening facing upwards is provided on the rotating shaft; in a closed state, the bottom of the upper plate abuts against the top of the lower plate; when the upper plate is moved up, the bottom of the upper plate is separated from the top of the lower plate, the rotating shaft rotates, the rotating shaft drives the lower plate to rotate, the upper plate is released, and the upper plate falls until the positioning column is embedded in the limiting groove, at this time, the layered storage device is in an open state; the use space is increased, but at the same time no extra space is occupied, and the storage effect is better; and when the upper plate is moved up, the rotating shaft rotates, and the upper plate and the lower plate are staggered and arranged at the same time, so that the user can take the items placed on the lower plate, which is convenient, practical and ingenious.
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Description

Technical Field

[0001] The present invention relates to the technical field of storage devices, and in particular to a layered storage device. Background Art

[0002] Whether in China or abroad, fruit plates are a must-have for every household. Generally, there are multiple placement areas on a fruit plate, which is convenient for classifying and placing various types of small items, such as a variety of dried fruits and snacks. When guests come to the house, you need to prepare snacks for the guests and classify the snacks into different placement areas for the guests to enjoy.

[0003] The fruit plates in the prior art are all composed of a plate body with multiple placement intervals, and snacks are directly placed in the placement intervals. However, this type of fruit plate has too few placement intervals, resulting in a reduction in the types of snacks that can be placed. The fruit plate is often not big enough. In this case, the user can only use another fruit plate to hold the snacks, which increases the space required for the fruit plate. Summary of the invention

[0004] The purpose of the present invention is to provide a layered storage device, aiming to solve the problem of poor storage effect of the storage device in the prior art.

[0005] The present invention is implemented as follows: a layered storage device comprises an upper plate, a lower plate and a rotating shaft; the upper plate and the lower plate are sequentially sleeved on the rotating shaft from top to bottom, the upper plate is movably connected to the rotating shaft, and the lower plate is relatively fixedly arranged with respect to the rotating shaft; the upper plate has an inner side wall facing the rotating shaft, a positioning column is provided on the inner side wall of the upper plate, and a limiting groove opening facing upward is provided on the rotating shaft; in a closed state, the bottom of the upper plate abuts against the top of the lower plate; when the upper plate is moved upward, the bottom of the upper plate is separated from the top of the lower plate, the rotating shaft rotates, and the rotating shaft drives the lower plate to rotate, the upper plate is released, and the upper plate falls until the positioning column is embedded in the limiting groove, at which time the layered storage device is in an open state.

[0006] Further, the rotating shaft comprises an upper shaft and a lower shaft, and the upper shaft and the lower shaft are arranged in a vertically docking manner; the outer surface of the upper shaft has a plurality of first limiting parts and a plurality of second limiting parts, and the plurality of first limiting parts and the plurality of second limiting parts are arranged in an interval and staggered manner around the outer surface of the upper shaft; a first slot with an opening facing downward is formed between the first limiting part and the second limiting part located on one side of the first limiting part, and a second slot with an opening facing downward is formed between the first limiting part and the second limiting part located on the other side of the first limiting part; the outer surface of the lower shaft has a plurality of supporting parts, and the plurality of supporting parts are arranged in intervals around the outer surface of the lower shaft, and the limiting groove is formed in the supporting part, and the limiting groove is arranged opposite to the second limiting part; there are a plurality of positioning posts, and the plurality of positioning posts are arranged in intervals around the inner side wall of the upper plate; when the upper plate is moved upward, the positioning post moves into the first slot, and after the upper plate is released, the positioning post moves into the limiting slot, and at this time, the position of the upper plate is fixed.

[0007] Furthermore, the first limiting portion has a first guide surface facing the first slot, and the first guide surface extends upwardly and obliquely toward the center of the first slot; when the positioning column moves into the first slot, the positioning column abuts against the first guide surface, and the upper plate continues to move upward, the rotating shaft rotates, and the rotating shaft drives the lower plate to rotate. After the upper plate is released, the positioning column slides into the limiting slot along the side wall of the limiting slot.

[0008] Furthermore, a guide portion is extended upward on one side of the limiting groove, a guide surface is formed on a side of the guiding portion close to the limiting groove, the guiding surface extends upward obliquely in a direction away from the limiting groove, and the guiding portion is arranged opposite to the first groove.

[0009] Furthermore, the second limiting portion has a second guide surface facing the second slot, the second guide surface extends obliquely upward in the direction of the middle of the second slot, and the second guide surface is arranged opposite to the limiting slot; when the positioning column is placed in the limiting slot, the upper plate is moved upward, the positioning column abuts against the second guide surface, and the upper plate continues to be moved upward, the rotating shaft rotates, and the rotating shaft drives the lower plate to rotate, the upper plate is released, and the upper plate moves downward until the bottom of the upper plate abuts against the top of the lower plate.

[0010] Furthermore, the lower shaft has a plurality of grooves corresponding to the positioning posts one by one, the grooves are arranged longitudinally, the grooves are located between the two support parts, the positioning posts are embedded in the grooves, and the grooves are opposite to the first guide surface; when the upper plate is moved upward, the positioning posts move along the length direction of the grooves.

[0011] Furthermore, the lower end of the lower shaft is fixed to the lower plate, and the lower end of the lower shaft has a lower docking section, the diameter of the lower docking section is smaller than the diameter of the lower end of the lower shaft, and the groove is formed in the lower docking section; the lower end of the upper shaft has an upper docking section, the diameter of the upper docking section is the same as the diameter of the lower docking section, the upper docking section and the lower docking section are arranged in an upper and lower docking manner, and the groove extends from the lower docking section to the upper docking section; when the upper plate is moved upward, the positioning column is moved upward to the upper shaft along the groove.

[0012] Furthermore, the upper plate and the lower plate are in a petal shape. When the layered storage device is in a closed state, the outer circumference of the upper plate and the outer circumference of the lower plate are arranged one by one; when the layered storage device is in an open state, the upper plate and the lower plate are staggered with each other.

[0013] Furthermore, the layered storage device includes an upper cover for covering the upper plate, the inner side wall of the upper cover extends upward to form an upper extension section; the upper cover has a connecting hole, the inner wall of the connecting hole is provided with an inner sealing ring, the upper cover has a lower surface facing downward, and an outer sealing ring is provided around the outer periphery of the lower surface of the upper cover; the upper cover is sleeved on the upper extension section through the connecting hole, at this time, the inner sealing ring is in contact with the outer surface of the upper extension section, and the outer sealing ring is in contact with the outer surface of the upper plate.

[0014] Furthermore, the layered storage device includes a chassis, which is movably connected to the bottom of the lower plate; the chassis has an upward upper surface, and a plurality of steel balls are movably arranged on the upper surface; when the lower plate rotates, the bottom of the lower plate drives the steel balls to roll.

[0015] Compared with the prior art, the layered storage device provided by the present invention has an upper plate and a lower plate stacked and arranged to form a whole when the layered storage device is in a closed state. At this time, it can be used as a layer, that is, the upper layer. When the layered storage device needs to be opened and used, the upper plate is moved upward to separate the upper plate from the lower plate, and the two plates are formed into an upper and a lower plate. At this time, both the upper plate and the lower plate can be used, which increases the usable space without taking up extra space, and the storage effect is better. When the upper plate is moved upward, the rotating shaft rotates, and the upper plate and the lower plate are staggered, which is convenient for users to take items placed on the lower plate. It is convenient, practical and clever. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional schematic diagram of a layered storage device provided by an embodiment of the present invention in a closed state;

[0017] Figure 2 is a schematic top view of a layered storage device provided by an embodiment of the present invention in an open state;

[0018] Figure 3 is a three-dimensional schematic diagram of a layered storage device provided by an embodiment of the present invention in an open state;

[0019] Figure 4 is a three-dimensional schematic diagram of an upper plate provided by an embodiment of the present invention;

[0020] Figure 5 is a three-dimensional schematic diagram of a lower plate provided by an embodiment of the present invention;

[0021] Figure 6 The embodiment of the present invention provides Figure 5 The enlarged schematic diagram of point A in the middle;

[0022] Figure 7 is a three-dimensional schematic diagram of an upper shaft provided by an embodiment of the present invention;

[0023] Figure 8 is a three-dimensional schematic diagram of an upper cover provided by an embodiment of the present invention;

[0024] Fig. 9 It is a three-dimensional schematic diagram of a chassis provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0026] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0028] Reference Figure 1-9 As shown, a preferred embodiment of the present invention is provided.

[0029] The layered storage device is usually used to place dried fruits and other small items, including an upper cover 3, an upper plate 5, a lower plate 6, a rotating shaft and a bottom plate 4. In the present embodiment, the upper cover 3, the upper plate 5 and the lower plate 6 are arranged in a "petal shape", and the number of "petals" is the same as the number of storage cavities for storing items. The upper cover 3, the upper plate 5 and the lower plate 6 are arranged downward in sequence along the longitudinal direction; the rotating shaft includes an upper shaft 2 and a lower shaft 1, the upper shaft 2 and the lower shaft 1 are arranged in an up-and-down docking arrangement, the upper plate 5 is sleeved on the upper shaft 2, and the lower plate 6 is sleeved on the lower shaft 1; the outer surface of the upper shaft 2 has a plurality of first limiting portions 20 and a plurality of second limiting portions 23, the plurality of first limiting portions 20 and the plurality of second limiting portions 23 are arranged around the outer surface of the upper shaft 2 in an interval and staggered manner, and the width area of ​​the first limiting portions 20 and the second limiting portions 23 gradually decreases from top to bottom. ; A first slot 22 with an opening facing downward is formed between the first limiting portion 20 and the second limiting portion 23 located on one side of the first limiting portion 20, and a second slot 25 with an opening facing downward is formed between the first limiting portion 20 and the second limiting portion 23 located on the other side of the first limiting portion 20; the first limiting portion 20 has a first guide surface 21 facing the first slot 22, and the first guide surface 21 extends upward and obliquely toward the center of the first slot 22; the upper plate 5 has an inner side wall abutting against the upper shaft 2, and the upper and lower ends of the inner side wall of the upper plate 5 extend upward and downward respectively to form an upper extension section 50 and a lower extension section 51, and a plurality of positioning columns 52 are provided on the inner side wall of the lower extension section 51, and the plurality of positioning columns 52 are arranged at intervals around the inner wall of the lower extension section 51, and a plurality of limiting grooves 12 are provided on the lower shaft 1, and the number of the limiting grooves 12 is consistent with the number of the positioning columns 52.

[0030] In the closed state, the bottom of the upper plate 5 abuts against the top of the lower plate 6, and each petal of the upper plate 5 corresponds to each petal of the lower plate 6, and the upper plate 5 closes the lower plate 6; when the layered storage device needs to be opened, the upper plate 5 is moved up to separate the bottom of the upper plate 5 from the top of the lower plate 6 until the positioning column 52 moves up to the first slot 22 and abuts against the first guide surface 21, and then continues to move up, thereby pressing the first guide surface 21, forcing the rotating shaft to rotate In this embodiment, the upper plate 5 is movably sleeved on the upper shaft 2, and the lower plate 6 is fixed to the lower shaft 1, so the rotating shaft drives the lower plate 6 to rotate, and then the upper plate 5 is released to allow the upper plate 5 to fall freely. At this time, the limiting groove 12 is just located directly below the positioning column 52, and each limiting groove 12 corresponds to each positioning column 52 one by one, until the positioning column 52 moves down into the limiting groove 12, the upper plate 5 stops falling, and the position of the upper plate 5 is fixed. At this time, the layered storage device is in an open state.

[0031] The outer surface of the lower shaft 1 has a plurality of support portions 10, and the plurality of support portions 10 are arranged at intervals around the outer surface of the lower shaft 1, and the end of the support portion 10 is recessed downward to form a limit groove 12 with an opening facing upward, the limit groove 12 is arranged opposite to the second limit portion 23, and one side of the limit groove 12 extends upward to form a guide portion 10, and a guide surface 11 is formed on the side of the guide portion 10 close to the limit groove 12, and the guide surface 11 extends upwardly in a direction away from the limit groove 12, and the guide portion 10 is arranged opposite to the first slot 22; further, the upper plate 5 has an inner side wall abutting against the upper shaft 2, and the inner side wall of the upper plate 5 has A plurality of positioning posts 52 are arranged at intervals around each other, and a plurality of grooves 27 corresponding to the positioning posts 52 are provided on the lower shaft 1. The grooves 27 are arranged longitudinally and are located between the two support portions 10. The positioning posts 52 are embedded in the grooves 27, and the grooves 27 are opposite to the first guide surface 21. After the upper plate 5 is moved up and the lower plate 6 is rotated, the upper plate 5 is released. At this time, the upper plate 5 falls, and the positioning posts 52 just abut against the guide surface 13 of the guide portion 10, and slide down along the arc surface of the guide surface 13 and enter the limiting groove 12. At this time, the position of the upper plate 5 is fixed, and the layered storage device is in an open state, which is convenient for users to use.

[0032] In this embodiment, the rotation angle of the rotating shaft is adjusted according to the number of petals, that is, the inclination of the first guide surface is adjusted. Correspondingly, the number of support portions 10, positioning posts 52 and grooves 27 is adjusted at the same time. For example, when the upper plate 5 and the lower plate 6 are 3 petals, the staggered angle is 60°. At this time, there are 3 support portions 10 spaced apart around the lower shaft 1, 3 grooves 27, and 3 positioning posts 52 spaced apart around the inner wall of the lower extension section 51; when there are 4 petals, the staggered angle is 45°. There are 4 support portions 10 spaced apart around the lower shaft 1, 4 grooves 27, 4 positioning posts 52 are arranged at intervals around the inner wall of the lower extension section 51; when there are 5 petals, the staggered angle is 36°, there are 5 support parts 10 arranged at intervals around the lower shaft 1, 5 grooves 27, and 5 positioning posts 52 arranged at intervals around the inner wall of the lower extension section 51; and so on, to ensure that after the upper plate 5 is moved up and the rotating shaft drives the lower plate 6 to rotate, the petals on the upper plate 5 and the petals on the lower plate 6 are staggered with each other, even if the petals of the lower plate 6 are right at the position between the two petals of the upper plate 5, this makes it easier to place items on the lower plate 6 and for users to take items placed on the lower plate 6.

[0033] Furthermore, the second limiting portion 23 has a second guide surface 24 facing the second slot 25, and the second guide surface 24 extends upwardly and obliquely in the direction of the middle of the second slot 25, and the second guide surface 24 is arranged opposite to the limiting slot 12; in the open state, that is, when the positioning column 52 is placed in the limiting slot 12, when we need to close the layered storage device, the upper plate 5 is moved up, and the positioning column 52 leaves the limiting slot 12 at this time, and the positioning column 52 abuts against the second guide surface 24, and the upper plate 5 continues to be moved up, and the positioning column 52 presses against the second guide surface 24, forcing the rotating shaft to rotate, and the rotating shaft drives the lower plate 6 to rotate again, so that the petals of the upper plate 5 and the petals of the lower plate 6 are symmetrical one by one, and when the positioning column 52 enters the second slot 25, the upper plate 5 can be released, and the upper plate 5 moves down by itself until the bottom of the upper plate 5 abuts against the top of the lower plate 6, and at this time the lower plate 6 is covered by the upper plate 5.

[0034] The layered storage device provided above, when the layered storage device is in a closed state, the upper plate 5 and the lower plate 6 are stacked and arranged to form a whole, and can be used as one layer, that is, the upper layer is used. When the layered storage device needs to be opened and used, the upper plate 5 is moved upward to separate the upper plate 5 from the lower plate 6, and the upper plate 5 and the lower plate 6 can be used. The use space is increased, but at the same time, no extra space is taken up, and the storage effect is better; and when the upper plate 5 is moved upward, the rotating shaft rotates, and the upper plate 5 and the lower plate 6 are staggered, which is convenient for users to take the items placed on the lower plate 6. It is convenient, practical and clever.

[0035] Furthermore, the lower end of the lower shaft 1 is fixed to the lower plate 6, and the lower end of the lower shaft 1 has a lower docking section, the diameter of the lower docking section is smaller than the diameter of the lower end of the lower shaft 1, and a groove 27 is formed in the lower docking section; the lower end of the upper shaft 2 has an upper docking section 26, the diameter of the upper docking section 26 is the same as the diameter of the lower docking section, the upper docking section 26 and the lower docking section are arranged in an upper and lower docking arrangement, and the groove 27 extends from the lower docking section to the upper docking section 26. When the upper plate 5 is moved up, it can ensure that the positioning column 52 is smoothly moved up to the upper shaft 2 along the groove 27 and enters the first slot 22.

[0036] When the upper cover 3 is closed, the lower extension section 51 is embedded between the inner wall of the lower plate 6 and the lower docking section of the lower shaft 1; the end of the upper extension section 50 is connected with the connecting section 7, the upper cover 3 has a connecting hole 30, the inner wall of the connecting hole 30 is provided with an inner sealing ring 31, the upper cover 3 has a lower surface 32 facing downward, and the outer circumference of the lower surface 32 of the upper cover 3 is surrounded by an outer sealing ring 33; the upper cover 3 is sleeved on the upper extension section 50 through the connecting hole 30, at this time, the inner sealing ring 31 is tightly fitted with the outer surface of the upper extension section 50, and the outer sealing ring 33 is tightly fitted with the outer surface of the upper plate 5, and the entire upper plate 5 is sealed by the inner sealing ring 31 and the outer sealing ring 33, which plays a role in dust and moisture prevention for the upper plate 5, and the bottom of the upper plate 5 is abutted against the cover on the lower plate 6, so that the lower plate 6 is sealed by the upper plate 5, so that the whole is sealed and dustproof, and when the upper cover 3 is covered, the upper plate 5 cannot be moved up due to the obstruction of the upper cover 3, and the upper plate 5 can be moved up by removing the upper cover 3.

[0037] Furthermore, the layered storage device includes a chassis 4, which is arranged in a docking relationship with the bottom of the lower plate 6. The chassis 4 has an upward upper surface 40, and the upper surface 40 is provided with a plurality of steel balls 41, which can reduce the friction between the chassis and the lower plate 5; when the lower plate 6 rotates, the bottom of the lower plate 6 drives the steel balls 41 to roll, thereby realizing the relative rotation of the lower plate 6 and the chassis 4, reducing friction and noise, and making the rotation smooth; and the chassis 4 can rotate relative to the upper plate 5, the lower plate 6, the rotating shaft and the upper cover 3, so that users at different positions can take the items in the storage cavity 8, which is convenient to use and brings users a better experience; and the bottom of the chassis 4 is covered with an anti-slip pad to increase the friction between the chassis 4 and the ground or the table, ensuring that the layered storage device is always stably placed on the table during use.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A layered storage device, characterized in that: The cam is provided with a plurality of cams, each of which ... The rotating shaft comprises an upper shaft and a lower shaft, and the upper shaft and the lower shaft are arranged in a vertically butted manner; the outer surface of the upper shaft comprises a plurality of first limiting parts and a plurality of second limiting parts, and the plurality of first limiting parts and the plurality of second limiting parts are arranged at intervals and staggered around the outer surface of the upper shaft; a first slot with an opening facing downward is formed between the first limiting part and the second limiting part located on one side of the first limiting part, and a second slot with an opening facing downward is formed between the first limiting part and the second limiting part located on the other side of the first limiting part; the outer surface of the lower shaft comprises a plurality of supporting parts, and the plurality of supporting parts are arranged at intervals around the outer surface of the lower shaft, the limiting groove is formed on the supporting part, and the limiting groove is arranged directly opposite to the second limiting part; There are a plurality of positioning posts, and the plurality of positioning posts are arranged at intervals around the inner side wall of the upper plate; when the upper plate is moved upward, the positioning posts move into the first slots, and after the upper plate is released, the positioning posts move into the limiting slots, and at this time, the position of the upper plate is fixed; The first limiting portion has a first guide surface facing the first slot, and the first guide surface extends upwardly and obliquely toward the center of the first slot; when the positioning post moves into the first slot, the positioning post abuts against the first guide surface, and the upper plate continues to move upward, the rotating shaft rotates, and the rotating shaft drives the lower plate to rotate. After the upper plate is released, the positioning post slides into the limiting slot along the side wall of the limiting slot; A guide portion is formed on one side of the limiting groove extending upward, and a guide surface is formed on a side of the guiding portion close to the limiting groove. The guiding surface extends upward in an inclined direction away from the limiting groove, and the guiding portion is arranged opposite to the first groove.

2. The layered storage device according to claim 1, characterized in that: The second limiting portion has a second guide surface facing the second slot, the second guide surface extends upwardly obliquely along the direction of the middle of the second slot, and the second guide surface is arranged opposite to the limiting slot; when the positioning column is placed in the limiting slot, the upper plate is moved upward, the positioning column abuts against the second guide surface, and the upper plate continues to be moved upward, the rotating shaft rotates, and the rotating shaft drives the lower plate to rotate, the upper plate is released, and the upper plate moves downward until the bottom of the upper plate abuts against the top of the lower plate.

3. The layered storage device according to any one of claims 1 to 2, characterized in that: The lower shaft has a plurality of grooves corresponding to the positioning posts one by one, the grooves are arranged longitudinally, the grooves are located between the two support parts, the positioning posts are embedded in the grooves, and the grooves are opposite to the first guide surface; when the upper plate is moved upward, the positioning posts move along the length direction of the grooves.

4. The layered storage device according to claim 3, characterized in that: The lower end of the lower shaft is fixed to the lower plate, and the lower end of the lower shaft has a lower docking section, the diameter of the lower docking section is smaller than the diameter of the lower end of the lower shaft, and the groove is formed in the lower docking section; the lower end of the upper shaft has an upper docking section, the diameter of the upper docking section is the same as the diameter of the lower docking section, the upper docking section and the lower docking section are arranged in an upper and lower docking arrangement, and the groove extends from the lower docking section to the upper docking section; when the upper plate is moved upward, the positioning column is moved up to the upper shaft along the groove.

5. The layered storage device according to any one of claims 1 to 2, characterized in that: The upper plate and the lower plate are in the shape of petals. When the layered storage device is in a closed state, the outer circumference of the upper plate is arranged one by one with the outer circumference of the lower plate; when the layered storage device is in an open state, the upper plate and the lower plate are arranged staggered with each other.

6. The layered storage device according to claim 5, characterized in that: The layered storage device includes an upper cover for covering the upper plate, the inner side wall of the upper cover extends upward to form an upper extension section; the upper cover has a connecting hole, the inner wall of the connecting hole is provided with an inner sealing ring, the upper cover has a lower surface facing downward, and an outer sealing ring is provided around the outer periphery of the lower surface of the upper cover; the upper cover is sleeved on the upper extension section through the connecting hole, at this time, the inner sealing ring is in contact with the outer surface of the upper extension section, and the outer sealing ring is in contact with the outer surface of the upper plate.

7. The layered storage device according to any one of claims 1 to 2, characterized in that: The layered storage device comprises a bottom plate, which is movably connected to the bottom of the lower plate; the bottom plate has an upper surface facing upward, and a plurality of steel balls are movably arranged on the upper surface; When the lower plate rotates, the bottom of the lower plate drives the steel balls to roll.