Structure for locking and releasing thin pieces and packaging case

Abstract

To provide structure for locking and releasing a flake body and a packaging case.SOLUTION: A pressing part unit 3 is provided at the center of a storage space part 2 and projects from the bottom part of the storage space part 2 upward so as to insert through a center hole of an article to fix the article to the storage space part 2. The pressing part unit 3 includes: plural buckle members for fixing the article; plural elastic pieces for pressing the article; a pressing part body; and a pressing sheet. The pressing sheet is formed at the center of a ceiling part of the pressing part unit 3, has a flat plate shape and is used for a user to press down. By flexibly connecting the buckle members and the elastic pieces to the pressing part body and the pressing sheet, respectively, the buckle members and the elastic pieces can be rolled when the pressing sheet moves up and down.SELECTED DRAWING: Figure 1A

Description

[Technical Field]

[0001] FIELD OF THE INVENTION This application relates to the technical field of article storage, and in particular to structures and packaging cases for locking and releasing foils. [Background technology]

[0002] Generally, users use packaging cases to store thin articles, such as star cards, stamps, multimedia storage disks, or data storage cards. In the prior art, packaging cases are generally made of hard materials (e.g., plastic, polypropylene polymer PE), which are relatively strong and protect the stored articles from damage, while providing the packaging cases with the characteristics of being lightweight and easy to carry. Furthermore, the materials also provide the packaging cases with transparency, improving the product usage experience.

[0003] Furthermore, in such conventional packaging cases, a pressing portion is generally provided at the center of the storage space for storing an item, and the pressing portion protrudes from the bottom of the storage space and is slightly deformable. The pressing portion is inserted into the center hole of an item, such as an optical disk, and deforms to lock the item and secure it in the storage space. When the item is to be removed, the pressing portion deforms under external force, releasing the lock and allowing the item to be removed from the storage space. Summary of the Invention [Problem to be solved by the invention]

[0004] However, because the deformation of the pressing part of the conventional packaging case is insufficient, the user needs to apply a large force when inserting or removing an item into the storage space, which is inconvenient to use and makes it easy to damage the item or the pressing part unit.

[0005] The present application aims to provide a structure for locking and releasing a thin body and a packaging case equipped with said structure so that when storing or removing an object, the user does not need to apply a large amount of force and the article or pressing unit is not damaged. [Means for solving the problem]

[0006] In view of this, the present application provides a structure for locking and releasing a foil body, a storage space for storing an item; a pressing unit that is provided at the center of the storage space and protrudes upward from the bottom of the storage space so as to be able to pass through a center hole of the article, thereby fixing the article to the storage space, The pressing unit includes a plurality of buckle members for fixing the article, a plurality of elastic pieces for pressing the article, a pressing unit main body, and a pressing sheet. The pressing sheet is formed at the center of the ceiling of the pressing unit, has a flat plate shape, and is used by the user to press downward. The buckle members and the elastic pieces are flexibly connected to the pressing unit main body and the pressing sheet, respectively, so that the buckle members and the elastic pieces can rotate when the pressing sheet moves up and down.

[0007] According to one embodiment of the present application, the buckle member and the elastic piece extend radially between the pressing portion body and the pressing sheet, the radially distal end of the buckle member is flexibly connected to the pressing portion body or is integrally formed with the pressing portion body, the radially proximal end of the buckle member is flexibly connected to the pressing sheet, and the radially proximal end of the elastic piece is flexibly connected to the pressing sheet.

[0008] According to one embodiment of the present application, the buckle member includes buckle teeth, a first connecting portion, and a second connecting portion, the buckle teeth are arranged vertically and provided with hook-shaped portions that protrude outward along a radial direction, and are flexibly connected to the pressing portion body and the pressing sheet by the first connecting portion and the second connecting portion, respectively, the buckle teeth are rotatable relative to the first connecting portion and the second connecting portion at flexible connection points with the first connecting portion and the second connecting portion, respectively, and the second connecting portion is rotatable relative to the pressing sheet at a flexible connection point with the pressing sheet, When the pressing sheet is not under pressure, the hook-shaped portion is held in a horizontal orientation, and the maximum radial distance of the hook-shaped portion in the horizontal direction formed on the ceiling portion of the pressing unit is greater than the diameter of the central hole of the article.

[0009] According to one embodiment of the present application, when the pressing sheet receives a downward force and moves downward toward the bottom of the accommodating space, the pressing sheet first rotates relative to the second connecting part at the flexible connecting part with the second connecting part, then further moves the second connecting part downward, rotates the second connecting part relative to the buckle tooth at the flexible connecting part with the buckle tooth, pulls the buckle tooth downward, rotates the buckle tooth downward relative to the first connecting part at the flexible connecting part with the first connecting part, and rotates the hook-shaped part of the buckle tooth upward, so that the maximum radial distance of the hook-shaped part in the horizontal direction formed on the ceiling part of the pressing unit is smaller than the diameter of the central hole of the article, After the downward force applied to the pressing sheet is released, the hook-shaped portion returns to its initial horizontal position, and the maximum horizontal radial distance of the hook-shaped portion formed on the ceiling portion of the pressing unit is restored to be greater than the diameter of the central hole of the article.

[0010] According to one embodiment of the present application, the elastic piece includes an upper ceiling portion, a support portion, and an elastic piece connection portion, the upper ceiling portion is arranged horizontally and is lower than the horizontal position of the pressing sheet, the radially far end of the upper ceiling portion is the free end of the upper ceiling portion, is formed as an upward protrusion, and is used to push the article 200 upward, the support portion is arranged approximately vertically, and its lower portion is flexibly connected to the radially near end of the upper ceiling portion, the lowest end of the support portion is arranged so as to always abut against the upper surface of the storage space portion, the highest end of the support portion is flexibly connected to one end of the elastic piece connection portion, and the other end of the elastic piece connection portion is flexibly connected to the pressing sheet, The maximum radial distance in the horizontal direction between the free ends of the upper ceiling portion is greater than the diameter of the central hole of the article, the horizontal position of the free end of the upper ceiling portion in a non-stressed state is lower than the horizontal position of the hook-shaped portion in a non-stressed state, and the difference in vertical height is at least equal to the thickness of the article.

[0011] According to one embodiment of the present application, when the pressure sheet receives a downward force and moves downward toward the bottom of the storage space, it first rotates relative to the elastic piece connection portion at the flexible connection point with the elastic piece connection portion, and then moves the elastic piece connection portion downward, so that the lowest end of the support portion is always abutted against the upper surface of the storage space, and the free end of the upper ceiling portion pivots and moves upward around the lowest end of the support portion; after the downward force received by the pressure sheet is released, the pressure sheet moves upward and recovers to its initial position, and the free end of the upper ceiling portion pivots and moves downward around the lowest end of the support portion to recover to its initial horizontal position.

[0012] According to one embodiment of the present application, the pressing unit is made of a material selected from the following materials: ABS, polystyrene, polycarbonate, PP, and PE.

[0013] According to one embodiment of the present application, the pressing part body is fixedly connected to the receiving space or is integrally formed with the receiving space.

[0014] According to one embodiment of the present application, a plurality of edge recesses for removing the article are arranged at equal circumferential angles on the circumferential edge of the receiving space.

[0015] The present application further provides a packaging case for containing flaky articles, A box having a constant thickness; a structure for locking and releasing the lamina; a cover pivotally connected to one side of the box so as to open and close the storage space, The receiving space is circular, is provided in the center of the box, and is recessed downward from one surface of the box in the thickness direction. [Effects of the Invention]

[0016] Compared with the prior art, the structure for locking and releasing a thin body according to the solution of the present application and the packaging case provided with the structure have the following technical advantages: 1. When placing an article in the receiving space, after pressing the pressing sheet, the hook-shaped part of the pressing unit for locking the article rotates upward, and the radial distance above the pressing unit is smaller than the diameter of the center hole of the article, so that the article is placed in the receiving space without being obstructed and will not be damaged by the collision with the packaging case during the placing process. Furthermore, after releasing the pressing sheet, the hook-shaped part automatically returns to a horizontal state to securely lock the article. 2. When removing an article from the storage space, the hook-shaped part of the pressing unit rotates upward after receiving a force, and the radial distance above the pressing unit is smaller than the diameter of the central hole of the article, so the article can be easily removed without being damaged by the collision with the packaging case. In addition, the pressing unit of the present application is further provided with an elastic piece, which can form a lever effect and convert the force pressing the pressing sheet downward into a force pressing the article upward, allowing the user to remove the article from the storage space easily and with minimal effort. 3. The pressing unit of the present application is integrally formed, has a simple structure, occupies a small space, and the user can insert and remove items by simply pressing the pressing sheet, making the operation easier. 4. During the pressing process, the buckle member of the present application avoids direct contact with the article, thereby avoiding damage to the article. [Brief explanation of the drawings]

[0017] In order to more clearly explain the specific embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings necessary for describing the specific embodiments or the prior art. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings on the premise that they do not make efforts that amount to inventive step.

[0018] [Figure 1A] 1 is a schematic three-dimensional view of a packaging case according to an embodiment solution of the present application; [Figure 1B] 1 is a schematic three-dimensional view of a structure for locking and releasing a lamella according to an implementation solution of the present application; [Figure 1C] 1 is a schematic diagram illustrating the use of a structure for locking and releasing a lamella according to an implementation solution of the present application; [Figure 2A] 1 is a schematic plan view of a structure for locking and releasing a lamella according to an implementation solution of the present application; [Figure 2B] 2B is a cross-sectional view of the structure for locking and releasing a lamella according to the implementation solution of the present application along the line AA in FIG. 2A, in which the pressing unit is in a non-force-receiving state; [Figure 2C] 1 is a state diagram of a structure for locking and releasing a thin-piece body according to an embodiment solution of the present application when subjected to pressure; [Figure 3A] 1 is a schematic plan view of a packaging case according to an embodiment of the present application, in which an article is accommodated in the accommodating space of the packaging case; [Figure 3B] 3B is a cross-sectional view of the packaging case according to the implementation solution of the present application along the line BB in FIG. 3A. [Figure 3C]FIG. 3C is an enlarged view of the V1 portion of FIG. 3B, showing a state diagram of the structure for locking and releasing a thin-piece body according to the implementation solution of the present application when no pressure is applied; [Figure 3D] FIG. 3C is an enlarged view of the V1 portion of FIG. 3B, showing a state diagram of the structure for locking and releasing a thin piece body according to the implementation solution of the present application when subjected to pressure. [Figure 3E] 10 is a schematic diagram of the positional relationship between the article and the buckle member when the pressing unit of the structure for locking and releasing the thin piece according to the implementation solution of the present application is not under pressure. FIG. [Figure 4A] 1 is a schematic plan view of a packaging case according to an embodiment of the present application, in which an article is accommodated in the accommodating space of the packaging case; [Figure 4B] 3B is a cross-sectional view of the packaging case according to the implementation solution of the present application along the line CC in FIG. 3A. [Figure 4C] FIG. 4C is an enlarged view of part V3 of FIG. 4B, showing a state diagram of the structure for locking and releasing a thin piece body according to the implementation solution of the present application when no pressure is applied. [Figure 4D] FIG. 4C is an enlarged view of part V3 of FIG. 4B, showing a state diagram of the structure for locking and releasing a thin piece body according to the implementation solution of the present application when subjected to pressure. [Figure 4E] 1 is a schematic diagram of the working relationship between the article and the elastic piece when not under pressure in the structure for locking and releasing a thin piece according to the implementation solution of the present application; FIG. [Figure 4F] 1 is a schematic diagram of the working relationship between the article and the elastic piece when pressure is applied to the structure for locking and releasing the thin piece according to the implementation solution of the present application; FIG. [Figure 4G] FIG. 4B is an enlarged view of part V2 of FIG. 4B, showing a schematic diagram of an article being contained in a packaging case according to the implementation solution of the present application. [Figure 4H] FIG. 4C is an enlarged view of part V2 of FIG. 4B, showing a schematic diagram of the state when an article is removed from a packaging case according to the implementation solution of the present application. DETAILED DESCRIPTION OF THE INVENTION

[0019] The following clearly and completely describes the technical solution of the present application in conjunction with the drawings, and it is clear that the described embodiments are not all embodiments but only some embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person skilled in the art without any inventive effort fall within the scope of protection of the present application.

[0020] Unless otherwise expressly specified or limited, the terms "attached," "coupled," and "connected" should be understood in a broad sense, and may refer to, for example, a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or even internal communication between two elements. Those skilled in the art can understand the specific meanings of the above terms in this application according to specific circumstances.

[0021] 1A-1C, 2A, and 3A, the present application discloses a packing case 100 capable of accommodating thin articles 200, which may be, for example, star cards, stamps, multimedia storage disks, or data storage cards. The packing case 100 includes a box body 1 and a structure for locking and releasing the thin articles. The box body 1 has a certain thickness and is the main body of the packing case 100. The structure for locking and releasing the thin articles includes a receiving space 2 and a pressing unit 3. The receiving space 2 is substantially circular, located in the center of the box body 1, and recessed downward from one side surface of the box body 1 to form a certain space for accommodating the articles 200. One or more edge recesses 21 are arranged at equal angular intervals on the circumferential edge of the receiving space 2, allowing a user to remove the articles 200. In the present application, a total of four edge recesses 21 are provided at 90-degree intervals along the circumferential edge of the storage space 2 in the center thereof, although the present application does not limit the number of edge recesses 21. Furthermore, the shape of the storage space 2 is determined according to the shape of the article, and may be, for example, a square, rectangle, polygon, etc., although the present application does not limit this. Furthermore, the packaging case 100 of the present application further includes a lid pivotally connected to the box body 1 on one side thereof so as to open and close the storage space 2.

[0022] 1B, 1C, 2A-2C, 3A-3E, and 4A-4H, the pressing unit 3 is provided at the center of the storage space 2, has a circular shape as a whole, protrudes upward from the bottom of the storage space 2 so as to be able to pass through the center hole of the article 200, and fixes a buckle for fixing the article 200 to the storage space 2. Specifically, the pressing unit 3 includes a buckle member 31, an elastic piece 32, a pressing body 33, and a pressing sheet 34.

[0023] According to the present application, the pressing unit 3 is made of a polymer material, and preferably, the pressing unit 3 is made of a material selected from Acrylonitrile Butadiene Styrene (ABS), General Purpose Polystyrene (GPPS), Polycarbonate (PC), Polypropylene (PP), and Polyethylene (PE).

[0024] 2A, 3A and 4A, a plurality of buckle members 31 and a plurality of elastic pieces 32 are arranged at equal angular intervals along the circumferential direction of the pressing unit 3, and are arranged symmetrically along the circumferential direction of the pressing unit 3, with gaps between them along the circumferential direction to allow relative movement. The pressing body 33 is fixedly connected to the accommodation space 2 or is integrally formed with the accommodation space 2, and the pressing sheet 34 is formed in the center of the ceiling of the pressing unit 3 and is flat, allowing the user to press down on it.

[0025] 2B-2C, 3B-3E, and 4B-4H, the buckle member 31 and the elastic piece 32 extend radially between the pressing portion main body 33 and the pressing sheet 34, and each has a certain circumferential width. The radially distal end of the buckle member 31 is flexibly connected to the pressing portion main body 33 or is integrally formed with the pressing portion main body 33, and the radially proximal end of the buckle member 31 is flexibly connected to the pressing sheet. The radially proximal end of the elastic piece 32 is flexibly connected to the pressing sheet 34, and the radially distal end of the elastic piece 32 is a free end that can move relative to the pressing portion main body 33.

[0026] In this specification, the term "flexible connection" means that the two are connected by an elastic, flexible material, and can rotate relative to each other when a force is applied, and when no force is applied, the connection returns to its initial state due to its own elasticity.

[0027] 2B-2C and 3B-3E, the buckle member 31 includes a buckle tooth 311, a first connecting portion 312, and a second connecting portion 313. The buckle tooth 311 is vertically arranged and has a hook-shaped portion 3111 protruding outward along a radial direction, and the first connecting portion 312 and the second connecting portion 313 are flexibly connected to the pressing portion body 33 and the pressing sheet 34, respectively. In particular, the buckle tooth 311 can rotate relative to the first connecting portion 312 and the second connecting portion 313 at a flexible connection point with the first connecting portion 312 and the second connecting portion 313, respectively, and the second connecting portion 313 can rotate relative to the pressing sheet 34 at a flexible connection point with the pressing sheet 34.

[0028] As shown in FIG. 3C, when the pressing sheet 34 is not under pressure, the second connection portion 313 and the pressing sheet 34 are inclined at an angle A° (the angle A° is 30° to 90°), the length of the projection of the second connection portion 313 on the horizontal plane is C, and the buckle teeth 311 are arranged so that their hook-shaped portions 3111 are held horizontally. In this case, the maximum radial distance D in the horizontal direction formed between the hook-shaped portions 3111 on the ceiling portion of the pressing unit 3 is greater than the diameter of the central hole of the article 200.

[0029] As shown in FIG. 3D, when moving downward under a downward force towards the bottom of the accommodation space portion 2, the pressing sheet 34 first rotates with respect to the second connection portion 313 at the flexible connection location with the second connection portion 313, and the inclination angle between the two changes to A1° (A1° < A°), and the length of the projection of the second connection portion 313 on the horizontal plane is C1 (C1 < C). Thereby, the second connection portion 313 is moved downward. The second connection portion 313 moves downward, rotates with respect to the buckle teeth 311 at the flexible connection location with the buckle teeth 311, pulls the buckle teeth 311 downward, and rotates the buckle teeth 311 downward with respect to the first connection portion 312 at the flexible connection location with the first connection portion 312, and rotates the hook-shaped portion 3111 of the buckle teeth 311 upward. Thereby, the maximum radial distance in the horizontal direction formed at the ceiling portion of the pressing unit 3 for all the hook-shaped portions 3111 changes to D1, D1 < D, and it is smaller than the aperture diameter of the central hole of the article 200.

[0030] After the downward force received by the pressing sheet 34 is released, the inclination angle between the pressing sheet 34 and the second connection portion 313 is restored to A°, the length of the projection of the second connection portion 313 on the horizontal plane is restored to C, the pressing sheet 34 automatically moves upward to restore to the initial position, and further, the hook-shaped portion 3111 is restored to the initial horizontal position, and the maximum radial distance in the horizontal direction formed at the ceiling portion of the pressing unit 3 is restored to D, which is larger than the state of the aperture diameter of the central hole of the article 200.

[0031] Furthermore, according to the implementation solution of the present application, in particular, referring to FIGS. 2B - 2C and FIGS. 4B - 4H, the elastic piece 32 includes an upper ceiling portion 321, a support portion 322, and an elastic piece connection portion 323. The upper ceiling portion 321 is horizontally arranged, lower than the horizontal position of the pressing sheet 34, the radial distal end of the upper ceiling portion 321 is the upper ceiling portion free end 3211, which is formed as a protrusion upward and is used to push the article 200 upward. The support portion 322 is arranged substantially vertically, the lower portion thereof is flexibly connected to the upper ceiling portion 321, and the lowermost end of the support portion 322 is arranged to always abut against the upper surface of the accommodation space portion 2. In this case, as can be seen from FIG. 4G, the minimum distance between the article 200 and the bottom BT of the pressing unit is H1.

[0032] Furthermore, the uppermost end of the support portion 322 is flexibly connected to one end of the elastic piece connection portion 323, and the other end of the elastic piece connection portion 323 is flexibly connected to the pressing sheet 34. Therefore, the upper ceiling portion 321, the support portion 322, the elastic piece connection portion 323, and the pressing sheet 34 can rotate relative to each other at the flexible connection points. Furthermore, the maximum radial distance between the multiple upper ceiling portion free ends 3211 is greater than the diameter of the central hole of the article 200, the horizontal position of the upper ceiling portion free ends 3211 in the non-loaded state is lower than the horizontal position of the hook-shaped portion 3111 in the non-loaded state, and the difference in vertical height is at least equal to the thickness of the article 200.

[0033] According to the above structure, referring to Figures 2C and 4D, when the pressing sheet 34 receives a downward force and moves downward toward the bottom of the storage space portion 2, it first rotates relative to the elastic piece connecting portion 323 at the flexible connecting point with the elastic piece connecting portion 323, reducing the included angle between them, and further moving the elastic piece connecting portion 323 downward. The second connection portion 313 moves downward, and the lowest end of the support portion 322 is always abutted against the upper surface of the storage space portion 2, thereby forming a lever action and causing the upper ceiling portion free end 3211, located at the radially far end of the upper ceiling portion 321, to pivot upward around the lowest end of the support portion 322. In this case, as can be seen from Figure 4F, the upward pushing action of the upper ceiling portion free end 3211 increases the height of the item 200 by ΔH, and the minimum distance between the item 200 and the bottom BT of the pressing unit is increased to H2. In this case, the increased height makes it easier for the user to remove the item from the storage space portion 2.

[0034] Also, referring to Figures 2C and 4D, after the downward force received by the pressing sheet 34 is released, the pressing sheet 34 automatically moves upward to return to its initial position, causing the elastic piece 32 to return to its initial horizontal position, and in this case, the free end 3211 of the upper ceiling portion pivots downward around the lowest end of the support portion 322 to return to its horizontal position.

[0035] The operation process of the pressing unit 3 of the present application will be specifically described below. When placing the article 200 in the storage space 2 of the packing case 100, first, the pressing sheet 34 of the pressing unit 3 is pressed downward. In this case, as described above, the buckle members 31 of the pressing unit 3 are flexibly connected, and the hook-shaped portions 3111 of the buckle teeth 311 rotate upward under the force. As a result, the maximum radial distance in the horizontal direction formed by all the hook-shaped portions 3111 on the ceiling portion of the pressing unit 3 becomes smaller. Furthermore, since the position of the free end 3211 of the upper ceiling portion is lower than the horizontal position of the hook-shaped portions 3111, the article 200 is not prevented from entering the storage space. When the item 200 is completely accommodated in the storage space 2, the pressing sheet 34 is released, and because the pressing sheet 34 itself is flexible, the hook-shaped portions 3111 return to a horizontal position, and the maximum horizontal radial distance between the hook-shaped portions 3111 returns to a position larger than the diameter of the central hole of the item 200, thereby engaging the item 200 from above and holding it in the storage space 2.

[0036] When the article 200 is to be removed from the storage space 2, first, the pressing sheet 34 of the pressing unit 3 is pressed downward. In this case, as described above, the buckle members 31 of the pressing unit 3 are flexibly connected, and the hook-shaped portions 3111 of the buckle teeth 311 are subjected to a force and rotate upward, thereby reducing the maximum radial distance in the horizontal direction formed by all the hook-shaped portions 3111 on the ceiling of the pressing unit 3. In addition, the force acts on the support portion 322 of the elastic piece 32 to form a lever action, and the elastic piece connection portion 323 moves downward, thereby pivoting and moving the upper ceiling free end 3211 of the upper ceiling portion 321 upward, and pushing the article 200 upward so as to move it in the direction of removal from the storage space 2. In this case, the maximum horizontal radial distance of all the hook-shaped portions 3111 formed on the ceiling portion of the pressing portion unit 3 is smaller than the diameter of the central hole of the article 200, so the upward movement of the article 200 is not hindered. Meanwhile, due to the lever action of the support portion 322, the free end 3211 of the upper ceiling portion converts the force pressing the pressing sheet 34 downward into a force pressing the article 200 upward, thereby allowing the user to easily remove the article 200 from the storage space portion 2.

[0037] The structure for locking and releasing a thin body according to the implementation solution of the present application and the packaging case provided with the structure have the following technical effects: 1. When placing an article in the receiving space, after pressing the pressing sheet, the hook-shaped part of the pressing unit for locking the article rotates upward, so that the horizontal radial distance above the pressing unit is smaller than the diameter of the center hole of the article, allowing the article to be placed in the receiving space without being obstructed, and the article will not be damaged by the collision with the packaging case during the placing process. Furthermore, after releasing the pressing sheet, the hook-shaped part automatically returns to a horizontal state, ensuring that the article is securely locked. 2. When removing an item from the storage space, the hook-shaped part of the pressing unit rotates upward after receiving a force, and the horizontal radial distance above the pressing unit is smaller than the diameter of the center hole of the item, so the item can be easily removed without being damaged by the collision with the packaging case. In addition, the pressing unit of this application is further provided with an elastic piece, which can form a lever effect and convert the force pressing the pressing sheet downward into a force pushing the item upward, allowing the user to remove the item from the storage space easily and with little effort. 3. The pressing unit of the present application is integrally formed, has a simple structure, occupies a small space, and the user can insert and remove items by simply pressing the pressing sheet, making the operation easier. 4. During the pressing process, the buckle member of the present application avoids direct contact with the article, thereby avoiding damage to the article.

[0038] Finally, the above embodiments do not limit the technical solutions of the present application, but are for illustrative purposes only. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art can understand that the technical solutions described in the above embodiments may still be amended, or some or all of the technical features may be replaced with equivalents, and the essence of the corresponding technical solutions will remain the same as these amendments or replacements, without departing from the scope of the technical solutions of the embodiments of the present application. [Explanation of symbols]

[0039] 1...box body; 2. Storage space; 21 ···edge recess; 3. Pressing unit; 31 ···Buckle member; 311 ···Buckle teeth; 3111 ···Hook-shaped portion; 312 ···First connection part; 313 ···Second connection part; 32 ···Elastic piece; 321 ···Upper ceiling section; 3211 ···Upper ceiling free end; 322...Support part; 323 ···Elastic piece connection part; 33 ···Pressing unit body; 34 ···Pressing sheet; 100 packing cases; 200...Goods.

Claims

1. a storage space for storing an item; a pressing unit provided at the center of the storage space and protruding upward from the bottom of the storage space so as to be insertable through a center hole of the article, thereby fixing the article to the storage space, The pressing unit includes a plurality of buckle members for fixing the article, a plurality of elastic pieces for pressing the article, a pressing unit main body, and a pressing sheet, the pressing sheet being formed at the center of the ceiling of the pressing unit, being flat, and being used by the user to press downward, the buckle members and the elastic pieces being flexibly connected to the pressing unit main body and the pressing sheet, respectively, so that the buckle members and the elastic pieces can rotate when the pressing sheet moves up and down, the buckle member and the elastic piece extend along a radial direction between the pressing portion main body and the pressing sheet, the radially far end of the buckle member is flexibly connected to the pressing portion main body or is integrally formed with the pressing portion main body, the radially near end of the buckle member is flexibly connected to the pressing sheet, and the radially near end of the elastic piece is flexibly connected to the pressing sheet, the buckle member includes buckle teeth, a first connecting portion, and a second connecting portion, the buckle teeth are arranged vertically and are provided with hook-shaped portions that protrude outward in a radial direction, the buckle teeth are flexibly connected to the pressing portion main body and the pressing sheet by the first connecting portion and the second connecting portion, respectively, the flexibly connected portion between the first connecting portion and the pressing portion main body is not in contact with the upper surface of the accommodating space, the buckle teeth are rotatable relative to the first connecting portion and the second connecting portion at the flexibly connected portion with the first connecting portion and the second connecting portion, respectively, and the second connecting portion is rotatable relative to the pressing sheet at the flexibly connected portion with the pressing sheet, When the pressure sheet is not under pressure, the second connection portion is inclined relative to the pressure sheet, and the inclination angle is A°, the angle A° is equal to or greater than 30° and less than 90°, and the second connection portion is inclined relative to the first connection portion, When the pressing sheet is not under pressure, the hook-shaped portion is held so as to be oriented horizontally, and the maximum radial distance of the hook-shaped portion in the horizontal direction formed on the ceiling portion of the pressing unit is greater than the diameter of the central hole of the article, When the pressing sheet receives a downward force and moves downward toward the bottom of the storage space, the pressing sheet first rotates relative to the second connecting portion at a flexible connecting portion with the second connecting portion, then further moves the second connecting portion downward, causing the second connecting portion to rotate relative to the buckle tooth at a flexible connecting portion with the buckle tooth, pulling the buckle tooth downward, causing the buckle tooth to rotate downward relative to the first connecting portion at a flexible connecting portion with the first connecting portion, causing the hook-shaped portion of the buckle tooth to rotate upward, and the maximum radial distance of the hook-shaped portion in the horizontal direction formed on the ceiling portion of the pressing unit is smaller than the diameter of the central hole of the article, after the downward force applied to the pressing sheet is released, the hook-shaped portion returns to its initial horizontal position, and is configured to recover so that the maximum radial distance of the hook-shaped portion in the horizontal direction formed on the ceiling portion of the pressing unit is greater than the diameter of the central hole of the article; the elastic piece includes an upper ceiling portion, a support portion, and an elastic piece connection portion, the upper ceiling portion is arranged horizontally and is lower than the horizontal position of the pressing sheet, the radially far end of the upper ceiling portion is the upper ceiling portion free end and is formed as an upward protrusion and is used to press the article upward, the support portion is arranged approximately vertically, its lower portion is flexibly connected to the radially near end of the upper ceiling portion, the lowest end of the support portion is arranged so as to always abut against the upper surface of the storage space portion, the highest end of the support portion is flexibly connected to one end of the elastic piece connection portion, and the other end of the elastic piece connection portion is flexibly connected to the pressing sheet; the maximum radial distance between the free ends of the upper ceiling portion in the horizontal direction is greater than the diameter of the central hole of the article, the horizontal position of the free ends of the upper ceiling portion in a non-loaded state is lower than the horizontal position of the hook-shaped portion in a non-loaded state, and the difference in vertical height between the free ends of the upper ceiling portion and the hook-shaped portion is at least equal to the thickness of the article; When the pressure sheet is not receiving pressure, the elastic piece connection portion is inclined with respect to the support portion and the pressure sheet in a direction away from the connection point with the pressure sheet to the bottom of the accommodation space portion, When the pressure sheet receives a downward force and moves downward toward the bottom of the storage space, it first rotates relative to the elastic piece connection part at the flexible connection point with the elastic piece connection part, and then moves the elastic piece connection part downward, so that the lowest end of the support part is always abutted against the upper surface of the storage space, and the free end of the upper ceiling part pivots and moves upward around the lowest end of the support part; and when the downward force received by the pressure sheet is released, the pressure sheet moves upward and returns to its initial position, and the free end of the upper ceiling part pivots and moves downward around the lowest end of the support part so that it returns to its initial horizontal position.

2. The structure for locking and releasing a thin piece as claimed in claim 1, wherein the pressing unit is made of a material selected from the group consisting of ABS, polystyrene, polycarbonate, PP and PE.

3. 2. The structure for locking and releasing a thin piece as claimed in claim 1, wherein the pressing part body is fixedly connected to the receiving space or is integrally formed with the receiving space.

4. 2. The structure for locking and releasing a thin piece of material according to claim 1, wherein a plurality of edge recesses for removing the article are arranged at equal angular intervals on the circumferential edge of the storage space.

5. A box having a constant thickness; A structure for locking and releasing the thin piece according to any one of claims 1 to 4; a lid body pivotally connected to one side of the box body so as to open and close the storage space portion, The packaging case is characterized in that the storage space is circular, provided in the center of the box body, and recessed downward from one surface of the box body along the thickness direction.

6. A step portion is provided on the periphery of the box body, The packaging case according to claim 5, characterized in that when the item is stored in the packaging case and the pressure sheet is not receiving force, the height of the top of the step portion is located above the item.

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