Cartridge assembly

Abstract

The invention relates to a cartridge assembly. The box assembly comprises a paper bottom outer box, a paper inner support, a paper dental floss reel, a paper upper support, a floss cutter and a paper upper cover. The paper bottom outer box comprises a first containing cavity. The paper inner support comprises a second containing cavity. The paper inner support is arranged in the first containing cavity. The paper inner support and the paper bottom outer box are detachably connected only in a friction fit mode. And the paper dental floss reel is rotatably connected to the paper inner support. And the paper dental floss reel is used for supporting a dental floss roll. The paper upper support is provided with a wire outlet opening. And the wire outlet opening is communicated with the second accommodating cavity. The upper paper support and the inner paper support are detachably connected only in a friction fit mode. The paper upper support is used for opening or closing the second opening. And the wire cutter is arranged on the paper upper support. And the paper upper cover is connected with the paper bottom outer box. The paper upper cover is turned over relative to the paper bottom outer box so as to be switched between the opening position and the covering position. The box assembly provided by the embodiment of the invention has good environmental protection property, so that the waste box assembly is not easy to pollute the environment.

Description

Technical Field

[0001] The present application relates to the technical field of containers, and in particular to a box assembly. Background Art

[0002] A dental floss box is a small box component that can be used to hold a dental floss roll. The dental floss box can keep the dental floss roll clean. The user can carry the dental floss box conveniently. When dental floss is needed, a predetermined length (e.g., 25 cm or 33 cm) of dental floss is drawn out from the dental floss box. Then the dental floss is supported by fingers and the teeth are cleaned. However, currently dental floss boxes are mainly made of plastic, so they are not environmentally friendly, and thus discarded dental floss boxes pollute the environment. At the same time, the plastic dental floss box itself has high hardness and strong pressure resistance. If environmentally friendly materials (e.g., paper materials) are used to manufacture dental floss with the same structure and replace the plastic dental floss box, it is not easy to achieve the functions of high hardness and strong pressure resistance of the plastic dental floss box. Summary of the invention

[0003] The embodiment of the present application provides a box assembly that has good environmental performance, so that discarded box assemblies are not easy to pollute the environment, and meet the actual required hardness and pressure resistance.

[0004] The embodiment of the present application proposes a box assembly, which includes a paper bottom outer box, a paper inner tray, a paper dental floss reel, a paper upper tray, a wire cutter and a paper upper cover.

[0005] The paper bottom outer box includes a first accommodating cavity with a first opening. The paper inner support includes a second accommodating cavity with a second opening. The paper inner support is arranged in the first accommodating cavity. The paper inner support and the paper bottom outer box are detachably connected only by friction fit. The first opening is arranged corresponding to the second opening. The second accommodating cavity is used to accommodate a dental floss roll. The paper dental floss reel is rotatably connected to the paper inner support. The paper dental floss reel is used to support the dental floss roll. The paper upper support has a wire outlet opening. The wire outlet opening is connected to the second accommodating cavity. The paper upper support and the paper inner support are detachably connected only by friction fit. The paper upper support is used to open or cover the second opening. A wire cutter is arranged on the paper upper support. The wire cutter is used to cut the dental floss led out of the wire outlet opening. The paper upper cover is connected to the paper bottom outer box. The paper upper cover is flipped relative to the paper bottom outer box to switch between an open position and a closed position. In the closed position, the paper upper cover covers the first opening and forms a accommodating space with the paper bottom outer box. The paper cover and the paper support are connected only by friction fit. When in the open position, the paper cover opens the first opening. The wire outlet opening and the wire cutter are in an exposed state.

[0006] The box assembly of the embodiment of the present application includes a paper bottom outer box, a paper inner support, a paper dental floss reel, a wire cutter and a paper upper cover. The paper bottom outer box and the paper inner support form a double-layer structure, so that the overall structural strength formed by the paper bottom outer box and the paper inner support is relatively large, the pressure resistance is high, and after the dental floss roll is installed, it has both cleaning characteristics and is not easy to deform or flatten. The paper bottom outer box and the paper inner support are detachably connected only by friction fit, which is convenient for disassembly and assembly between the paper bottom outer box and the paper inner support, reduces the difficulty of disassembly and assembly operation, and improves the convenience of use. The paper upper support is connected to the paper inner support, and the paper inner support is connected to the paper bottom outer box, which is conducive to the paper upper support, the paper inner support and the paper bottom outer box supporting each other, ensuring that the overall structural strength formed by the paper upper support, the paper inner support and the paper bottom outer box is relatively large, the pressure resistance is high, and the problems of deformation and flattening are not easy to occur. The paper upper support and the paper inner support are detachably connected only by friction fit, which facilitates the disassembly and assembly between the paper upper support and the paper inner support, reduces the difficulty of disassembly and assembly, and improves the convenience of use. The paper upper cover and the paper bottom outer box form a accommodating space. The paper upper cover and the paper bottom outer box jointly protect the paper inner support, the paper dental floss reel, the paper upper support and the wire cutter, reducing the possibility of contamination of the paper inner support, the paper dental floss reel, the paper upper support and the wire cutter. In the box assembly of the embodiment of the present application, the paper bottom outer box, the paper inner support, the paper dental floss reel, the paper upper support and the paper upper cover are all made of paper materials, so that it has good environmental protection, so that the discarded box assembly is not easy to pollute the environment, and it can also be recycled and reused, meeting environmental protection requirements.

[0007] In some practicable ways, the paper inner tray comprises a body and an outer flange, the body is provided with a second accommodating cavity, and the outer flange and at least a part of the body are respectively connected to the paper bottom outer box only by friction fit.

[0008] In some achievable ways, the paper inner tray includes two first side walls. Two ends of the paper dental floss reel are rotatably connected to the two first side walls respectively. The first side wall includes a reinforcement part. The reinforcement part is connected to the paper bottom outer box only by friction fit.

[0009] In some achievable embodiments, a portion of the first side wall protrudes toward the paper bottom outer box to form a reinforcement portion. The reinforcement portion is located on a side of the paper dental floss reel close to the second opening.

[0010] In some achievable ways, the paper inner support includes two first side walls. The first side wall is provided with a mounting hole. The end of the paper dental floss reel is inserted into the mounting hole. The end of the paper dental floss reel is rotatably connected to the first side wall only by friction fit.

[0011] In some achievable embodiments, a portion of the first side wall protrudes toward the paper bottom outer box to form a protrusion. The protrusion is provided with a mounting hole. There is a gap between the protrusion and the paper bottom outer box. There is a gap between the end of the paper dental floss reel and the paper bottom outer box.

[0012] In some achievable ways, the paper inner tray includes two first side walls and a second side wall. The second side wall connects the two first side walls. The first side wall and the second side wall enclose a second accommodating cavity. At least part of the second side wall is connected to the paper bottom outer box only by friction fit.

[0013] In some achievable embodiments, the paper upper support includes a third side wall and a first top wall connected to each other. The third side wall and the first top wall enclose a third accommodating cavity. The wire outlet opening and the wire cutter are both arranged on the first top wall. The wire outlet opening is connected to the third accommodating cavity. The second accommodating cavity is connected to the third accommodating cavity. At least part of the third side wall is inserted into the second accommodating cavity. The third side wall and the paper inner support are detachably connected only by friction fit.

[0014] In some achievable embodiments, a portion of the third side wall is detachably connected to the paper bottom outer box only by friction fit.

[0015] In some achievable embodiments, the first top wall has a recess, and the wire outlet opening and the wire cutter are respectively arranged on two sides of the recess.

[0016] In some achievable embodiments, the paper upper cover includes a fourth side wall and a second top wall. The box assembly includes a paper connecting piece, and the fourth side wall and the paper bottom outer box are connected by the paper connecting piece.

[0017] In some practicable embodiments, a side of the first top wall facing away from the paper connector is provided with an avoidance slope, and when the paper top cover is turned over relative to the paper bottom outer box, the avoidance slope is used to avoid the fourth side wall.

[0018] In some achievable ways, the paper support has an escape opening. The wire cutter includes a first clamp, a connecting piece, a second clamp and a cutting knife. The connecting piece connects the first clamp and the second clamp. The connecting piece is passed through the escape opening. The wire cutter is clamped on the paper support through the first clamp and the second clamp. The first clamp is located on the outer side of the paper support, and the second clamp is located on the inner side of the paper support. The first clamp is provided with a cutting knife.

[0019] In some achievable ways, at least one of the paper bottom outer box, the paper inner tray, the paper dental floss reel, the paper upper tray, and the paper upper cover is solidified and formed using raw materials including bamboo pulp and bagasse pulp. The total weight of bamboo pulp in the raw materials accounts for 35%. The total weight of bagasse pulp in the raw materials accounts for 65%. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The features, advantages and technical effects of exemplary embodiments of the present application will be described below with reference to the accompanying drawings.

[0021] Figure 1 It is a structural schematic diagram of a box assembly according to an embodiment of the present application;

[0022] Figure 2 It is a partial structural schematic diagram of a box assembly according to an embodiment of the present application;

[0023] Figure 3 It is a schematic diagram of a partial exploded structure of a box assembly according to an embodiment of the present application;

[0024] Figure 4 is a schematic diagram of a partially exploded structure of a box assembly containing a dental floss roll according to an embodiment of the present application;

[0025] Figure 5 It is a partial structural schematic diagram of a paper inner support according to an embodiment of the present application;

[0026] Figure 6 This is a partial structural schematic diagram of a paper support according to an embodiment of the present application;

[0027] Figure 7 It is a structural schematic diagram of a box assembly according to an embodiment of the present application;

[0028] Figure 8 This is a schematic diagram of a partial exploded structure of a paper support and a wire cutter according to an embodiment of the present application;

[0029] Fig. 9 It is a schematic diagram of a partial cross-sectional structure of a box assembly according to an embodiment of the present application.

[0030] In the drawings, the same reference numerals are used for the same components. The drawings are not drawn to scale.

[0031] Description of reference numerals:

[0032] 10. Box assembly;

[0033] 20. Paper bottom outer box; 21. First receiving cavity;

[0034] 30, paper inner support; 301, second accommodating cavity; 31, body; 311, first side wall; 311a, reinforcement portion; 311b, mounting hole; 311c, raised portion; 312, second side wall; 32, outer flange;

[0035] 40. Paper dental floss reel;

[0036] 50, paper support; 501, thread outlet opening; 502, dental floss fixing part; 503, avoidance opening; 504, third accommodating cavity; 51, third side wall; 52, first top wall; 521, recess; 522, avoidance slope;

[0037] 60. Wire cutter; 61. First clip; 62. Connecting piece; 63. Second clip; 64. Cutting knife;

[0038] 70. Paper cover; 701. Fourth accommodating cavity; 71. Fourth side wall; 72. Second top wall;

[0039] 80. Paper connector;

[0040] 100, side;

[0041] 200, bottom;

[0042] 300. Dental floss roll. DETAILED DESCRIPTION

[0043] The following detailed description and drawings of the embodiments of the present application are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0044] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly vertical, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0045] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0046] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0047] The embodiment of the present application provides a box assembly, which can replace the existing plastic box assembly through a clever structural design while being environmentally friendly. The box assembly of the embodiment of the present application has strong structural strength and pressure resistance as a whole. Therefore, during the daily repeated use of the box assembly of the embodiment of the present application, the box assembly is not prone to deformation, flattening and other problems. The box assembly of the embodiment of the present application uses environmentally friendly materials, so it is not easy to pollute the environment after being discarded.

[0048] In order to better understand the present application, the box assembly of the embodiment of the present application is described below with reference to the accompanying drawings.

[0049] Figure 1 The structure of the box assembly 10 is schematically shown. Figure 2 A partial structure of the box assembly 10 is schematically shown. Figure 3 A partial exploded structure of the box assembly 10 is schematically shown. Figure 4 The partially exploded structure of the box assembly 10 containing the dental floss roll 300 is schematically shown.

[0050] See also Figures 1 to 4 As shown, the embodiment of the present application provides a box assembly 10, which includes a paper bottom outer box 20, a paper inner support 30, a paper dental floss reel 40, a paper upper support 50, a wire cutter 60 and a paper upper cover 70.

[0051] The paper bottom outer box 20 includes a first accommodating cavity 21 having a first opening. The paper inner tray 30 includes a second accommodating cavity 301 having a second opening. The paper inner tray 30 is disposed in the first accommodating cavity 21. The paper inner tray 30 and the paper bottom outer box 20 are detachably connected only by friction fit. The first opening is disposed corresponding to the second opening. The second accommodating cavity 301 is used to accommodate the dental floss roll 300.

[0052] The paper dental floss reel 40 is rotatably connected to the paper inner support 30. The paper dental floss reel 40 is used to support the dental floss reel 300. The paper upper support 50 has a wire outlet opening 501. The wire outlet opening 501 is connected to the second accommodating chamber 301. The paper upper support 50 and the paper inner support 30 are detachably connected only by friction fit. The paper upper support 50 is used to open or cover the second opening. The wire cutter 60 is arranged on the paper upper support 50. The wire cutter 60 is used to cut the dental floss led out of the wire outlet opening 501.

[0053] The paper upper cover 70 is connected to the paper bottom outer box 20. The paper upper cover 70 is flipped relative to the paper bottom outer box 20 to switch between an open position and a closed position. In the closed position, the paper upper cover 70 covers the first opening and forms a storage space with the paper bottom outer box 20. The paper upper cover 70 and the paper upper support 50 are connected only by friction fit, and the paper upper cover 70 is covered on the paper upper support 50. In the open position, the paper upper cover 70 opens the first opening. The paper upper support 50 and the wire cutter 60 are in an exposed state.

[0054] In the embodiment of the present application, the process of the user using the box assembly 10 can be that the user holds the paper bottom outer box 20 with fingers and opens the paper upper cover 70. The user pinches the dental floss drawn out from the outlet opening 501 of the paper upper support 50 with fingers, and then pulls the dental floss to extract a predetermined length (for example, 25 cm or 33 cm) of dental floss. The dental floss is placed at the wire cutter 60 and cut. The paper upper cover 70 is closed and the box assembly 10 is put down. The user can use fingers to shape the dental floss and use fingers to support the dental floss. The fingers drive the dental floss to clean the teeth. After cleaning, the dental floss is discarded. The material of the dental floss may include nylon thread, silk thread or polyester thread.

[0055] After the dental floss roll 300 in the box assembly 10 is used up, the paper upper cover 70 can be flipped to the open position, and the paper upper support 50 can be separated from the paper inner support 30 and the paper upper support 50 can be taken away. Then, the paper inner support 30 can be taken out of the paper bottom outer box 20. The paper inner support 30 and the paper dental floss reel 40 can be taken out of the paper bottom outer box 20 by pulling the paper dental floss reel 40. Remove the paper dental floss reel 40 on the paper inner support 30. Reinstall the dental floss roll 300 in the second accommodating cavity 301 of the paper inner support 30. Then, reinstall the paper dental floss reel 40 on the paper inner support 30. The paper dental floss reel 40 can be inserted into the central plug hole of the dental floss roll 300. Then, the paper inner support 30, the paper dental floss reel 40 and the dental floss roll are installed in the paper bottom outer box 20. The end of the dental floss roll 300 is passed through the outlet opening 501 of the paper upper support 50, and the paper upper support 50 is covered. Finally, the paper upper cover 70 is turned over to the closed position so that the box assembly 10 can be reused. Therefore, in each embodiment of the present application, not only the material itself is an environmentally friendly material, but also the use method is an environmentally friendly form.

[0056] The paper inner support 30 of the embodiment of the present application is arranged in the first accommodating cavity 21 of the paper bottom outer box 20. The paper bottom outer box 20 is a box body that is often in contact with the user's hands. The paper bottom outer box 20 can protect the paper inner support 30 so that the user's fingers will not touch the paper inner support 30, reducing the possibility of the fingers carrying bacteria or dirt to contaminate the paper inner support 30. The paper inner support 30 and the paper bottom outer box 20 are detachably connected only by friction fit. The friction fit connection method belongs to interference fit.

[0057] When the paper inner support 30 needs to be pulled out from the paper bottom outer box 20, a pulling force needs to be applied to the paper inner support 30 to overcome the friction resistance between the paper inner support 30 and the paper bottom outer box 20, thereby separating the paper inner support 30 from the paper bottom outer box 20. When the paper inner support 30 needs to be loaded into the paper bottom outer box 20, a pressure needs to be applied to the paper inner support 30 to overcome the friction resistance between the paper inner support 30 and the paper bottom outer box 20, thereby assembling the paper inner support 30 and the paper bottom outer box 20.

[0058] The paper inner tray 30 and the paper bottom outer box 20 are detachably connected only by friction fit, so that no additional connecting parts are required between the paper inner tray 30 and the paper bottom outer box 20. On the one hand, the number of parts of the box assembly 10 as a whole can be reduced, and the assembly process can be reduced. On the other hand, the disassembly and assembly process between the paper inner tray 30 and the paper bottom outer box 20 is convenient and easy to operate, which is conducive to reducing the difficulty of reusing the box assembly 10 and replacing the dental floss roll 300, thereby improving the usability of the box assembly 10.

[0059] The paper dental floss reel 40 is used to support the dental floss roll 300. When the user pulls the dental floss through the outlet opening 501 of the paper upper support 50, the dental floss roll 300 and the paper dental floss reel 40 rotate synchronously. The paper dental floss reel 40 rotates relative to the paper inner support 30. The dental floss roll 300 itself has a central plug hole. When replacing the dental floss roll 300, the paper dental floss reel 40 is plugged into the central plug hole of the dental floss roll 300.

[0060] The paper upper support 50 and the paper inner support 30 are detachably connected only by friction fit. When the paper upper support 50 and the paper inner support 30 need to be separated, a pulling force needs to be applied to the paper upper support 50 to overcome the friction resistance between the paper upper support 50 and the paper inner support 30, so as to separate the paper upper support 50 from the paper inner support 30. When the paper upper support 50 and the paper inner support 30 need to be assembled and fixed, a pressure needs to be applied to the paper upper support 50 to overcome the friction resistance between the paper upper support 50 and the paper inner support 30, so as to assemble the paper upper support 50 and the paper inner support 30.

[0061] The paper upper support 50 and the paper inner support 30 are detachably connected only by friction fit, so that no additional connecting parts are required between the paper upper support 50 and the paper inner support 30. On the one hand, the number of parts of the box assembly 10 as a whole can be reduced, and the assembly process can be reduced. On the other hand, the disassembly and assembly process between the paper upper support 50 and the paper inner support 30 is convenient and easy to operate, which is conducive to reducing the difficulty of reusing the box assembly 10 and replacing the dental floss roll 300, thereby improving the usability of the box assembly 10.

[0062] The wire cutter 60 is disposed on the paper upper support 50. The box assembly 10 is provided with the wire cutter 60 so that the user can conveniently use the wire cutter 60 to cut the dental floss drawn out from the outlet opening 501, so the user does not need to carry an additional tool for cutting the dental floss, thereby improving the convenience of using the box assembly 10. Exemplarily, the material of the wire cutter 60 may include metal materials such as steel and iron.

[0063] The paper cover 70 is connected to the paper bottom outer box 20. When the paper cover 70 is in the open state, it is not necessary to remove the paper cover 70 and place it in other areas, which reduces the possibility of losing the paper cover 70. At the same time, the paper cover 70 can be opened or closed by simply flipping the paper cover 70, which is conducive to improving the operation convenience of the paper cover 70 and improving the usability of the box assembly 10.

[0064] When the paper upper cover 70 is in the closed position, the paper upper cover 70 covers the first opening of the paper bottom outer box 20 and forms a storage space with the paper bottom outer box 20. The paper inner support 30, the paper dental floss reel 40, the paper upper support 50 and the wire cutter 60 are all located in the storage space. The paper upper cover 70 and the paper bottom outer box 20 together protect the paper inner support 30, the paper dental floss reel 40, the paper upper support 50 and the wire cutter 60, reducing the possibility of the paper inner support 30, the paper dental floss reel 40, the paper upper support 50 and the wire cutter 60 being contaminated.

[0065] When the paper upper cover 70 is in the open position, the paper upper cover 70 opens the first opening of the paper bottom outer box 20. The wire outlet opening 501 of the paper upper support 50 and the wire cutter 60 are in an exposed state, which is convenient for the user to pull and cut the dental floss.

[0066] The box assembly 10 of the embodiment of the present application includes a paper bottom outer box 20, a paper inner holder 30, a paper dental floss reel 40, a wire cutter 60 and a paper upper cover 70. The paper bottom outer box 20 and the paper inner holder 30 form a double-layer structure, so that the overall structural strength formed by the paper bottom outer box 20 and the paper inner holder 30 is relatively large, the pressure resistance is high, and after the dental floss reel 300 is installed, it has the above-mentioned cleaning characteristics, and is not prone to deformation and flattening. The paper bottom outer box 20 and the paper inner holder 30 are detachably connected only by friction fit, which facilitates the disassembly and assembly between the paper bottom outer box 20 and the paper inner holder 30, reduces the difficulty of disassembly and assembly, and improves the convenience of use. The paper upper support 50 is connected to the paper inner support 30, and the paper inner support 30 is connected to the paper bottom outer box 20, which is conducive to the paper upper support 50, the paper inner support 30 and the paper bottom outer box 20 supporting each other, ensuring that the overall structural strength formed by the paper upper support 50, the paper inner support 30 and the paper bottom outer box 20 is relatively large, high in pressure resistance, and not prone to deformation and flattening. The paper upper support 50 and the paper inner support 30 are detachably connected only by friction fit, which is convenient for disassembly and assembly between the paper upper support 50 and the paper inner support 30, reducing the difficulty of disassembly and assembly operations and improving convenience of use. The paper upper cover 70 and the paper bottom outer box 20 form a accommodating space. The paper cover 70 and the paper bottom outer box 20 together protect the paper inner holder 30, the paper floss reel 40, the paper upper holder 50 and the wire cutter 60, reducing the possibility of contamination of the paper inner holder 30, the paper floss reel 40, the paper upper holder 50 and the wire cutter 60. In the box assembly 10 of the embodiment of the present application, the paper bottom outer box 20, the paper inner holder 30, the paper floss reel 40, the paper upper holder 50 and the paper cover 70 are all made of paper materials, so that they have good environmental protection, so that the discarded box assembly 10 is not easy to pollute the environment, and can also be recycled and reused, meeting environmental protection requirements.

[0067] In some feasible embodiments, the paper bottom outer box 20, the paper inner support 30, the paper dental floss reel 40, the paper upper support 50 and the paper upper cover 70 can all be manufactured by using a pulp molding process.

[0068] In some achievable ways, the friction resistance between the paper inner support 30 and the paper bottom outer box 20 is greater than the friction resistance between the paper upper support 50 and the paper inner support 30. When the paper upper support 50 and the paper inner support 30 need to be separated, the pulling force applied to the paper upper support 50 can separate the paper upper support 50 from the paper inner support 30, but the pulling force is less than the friction resistance between the paper inner support 30 and the paper bottom outer box 20, so that the pulling force will not cause the paper inner support 30 to separate from the paper bottom outer box 20, reducing the possibility of separation of the paper inner support 30 and the paper bottom outer box 20 when separating the paper upper support 50 and the paper inner support 30.

[0069] In some achievable ways, the friction resistance between the paper upper support 50 and the paper inner support 30 is greater than the friction resistance between the paper upper cover 70 and the paper upper support 50. When the paper upper cover 70 needs to be flipped from the closed position to the open position, the force applied to the paper upper cover 70 can separate the paper upper cover 70 and the paper upper support 50, but the force is smaller than the friction resistance between the paper upper support 50 and the paper inner support 30, so that the force will not cause the paper upper support 50 to separate from the paper inner support 30, reducing the possibility of separation of the paper upper support 50 and the paper inner support 30 when flipping the paper upper cover 70.

[0070] In some achievable ways, Figure 5 The partial structure of the paper inner support 30 is schematically shown. Figures 3 to 5 As shown, the paper inner tray 30 includes a body 31 and an outer flange 32. The body 31 is provided with a second accommodating cavity 301. The outer flange 32 and at least a part of the body 31 are respectively connected to the paper bottom outer box 20 only by friction fit.

[0071] During the process of loading the paper inner support 30 into the paper bottom outer box 20, the outer flange 32 of the paper inner support 30 can play a role of limiting and guiding, thereby ensuring that the paper inner support 30 is smoothly loaded into the paper bottom outer box 20, reducing the possibility of the paper inner support 30 getting stuck in the paper bottom outer box 20 due to the position offset of the paper inner support 30, and improving the smoothness and ease of operation of the assembly process between the paper inner support 30 and the paper bottom outer box 20.

[0072] After the paper inner support 30 is loaded into the paper bottom outer box 20, the outer flange 32 and at least part of the main body 31 are in contact with the paper bottom outer box 20, so that a relatively large contact area can be formed between the paper inner support 30 and the paper bottom outer box 20, so that the paper bottom outer box 20 can form a limiting constraint on the paper inner support 30 in multiple contact areas, which is beneficial to reduce the possibility of the paper inner support 30 being shifted in position within the paper bottom outer box 20 due to external force.

[0073] In some examples, the width of the outer flange 32 may range from 0.5 mm to 1 mm.

[0074] In some possible implementations, see Figures 3 to 5 As shown, the paper inner tray 30 includes two first side walls 311. The two first side walls 311 are spaced apart along the axial direction of the paper dental floss reel 40. The two ends of the paper dental floss reel 40 are rotatably connected to the two first side walls 311. The first side wall 311 includes a reinforcing portion 311a. The reinforcing portion 311a is connected to the paper bottom outer box 20 only by friction fit.

[0075] When the dental floss roll 300 is installed on the paper dental floss reel 40, at least part of the dental floss roll 300 is located between the two first side walls 311. In the axial direction of the paper dental floss reel 40, the two first side walls 311 can limit the dental floss roll 300, thereby reducing the possibility of the dental floss roll 300 being displaced along the axial direction of the paper dental floss reel 40 when the user pulls the dental floss reel 300 to rotate.

[0076] The first side wall 311 provided with the reinforcement part 311a has relatively high structural strength and high pressure resistance, which is beneficial to the overall structural strength and high pressure resistance of the paper inner support 30. Therefore, the first side wall 311 or the paper inner support 30 as a whole is not prone to deformation or collapse when subjected to external force.

[0077] After the paper inner support 30 is loaded into the paper bottom outer box 20, the reinforcing portion 311a of the first side wall 311 contacts the paper bottom outer box 20. A gap may exist between the area of ​​the first side wall 311 except the reinforcing portion 311a and the paper bottom outer box 20.

[0078] In some examples, a portion of the first side wall 311 protrudes toward the paper bottom outer box 20 to form a reinforcing portion 311a. The reinforcing portion 311a is located on a side of the paper dental floss reel 40 close to the second opening.

[0079] The paper inner support 30 is an integrally formed structure. The method of directly forming the reinforcing portion 311a on the first side wall 311 replaces the method of separately processing and manufacturing the first side wall 311 and the reinforcing portion 311a and then assembling them, thereby eliminating the process of separately processing the reinforcing portion 311a and bonding the reinforcing portion 311a to the first side wall 311 by an adhesive, and also eliminating the use of adhesives, thereby improving the environmental friendliness of the box assembly 10.

[0080] Exemplarily, a portion of the first side wall 311 corresponding to the reinforcing portion 311 a forms a concave cavity, which is communicated with the second accommodating cavity 301 .

[0081] In some possible implementations, see Figures 3 to 5 As shown, the paper inner holder 30 includes two first side walls 311. The first side wall 311 is provided with a mounting hole 311b. The end of the paper dental floss reel 40 is inserted into the mounting hole 311b. The end of the paper dental floss reel 40 is rotatably connected to the first side wall 311 only by friction fit.

[0082] The paper floss reel 40 and the paper inner holder 30 are rotatably connected only by friction fit, so that no additional connecting parts are required between the paper floss reel 40 and the paper inner holder 30. On the one hand, the number of parts of the box assembly 10 as a whole can be reduced, and the assembly process can be reduced. On the other hand, the disassembly and assembly process between the paper floss reel 40 and the paper inner holder 30 is convenient and easy to operate, which is conducive to reducing the difficulty of reusing the box assembly 10 and replacing the dental floss reel 300, thereby improving the usability of the box assembly 10.

[0083] The interference fit between the paper floss reel 40 and the mounting hole 311b allows friction resistance between the paper floss reel 40 and the first side wall 311 when the user pulls the dental floss, thereby maintaining a moderate tension on the dental floss during extraction, and allowing the user to slowly and accurately extract a predetermined length of dental floss, reducing the possibility that the length of the extracted dental floss is difficult to control.

[0084] Under the action of frictional resistance, the paper dental floss reel 40 can rotate slowly relative to the first side wall 311, which is beneficial to improving the texture of the dental floss extraction process and improving the user experience satisfaction of the box assembly 10.

[0085] After the dental floss roll 300 in the box assembly 10 is used up, the paper inner holder 30 and the paper dental floss roll 40 are taken out of the paper bottom outer box 20 by pulling the paper dental floss reel 40. Then, the paper dental floss reel 40 is pulled out from the mounting hole 311b. The dental floss roll 300 is reinstalled in the second accommodating cavity 301 of the paper inner holder 30. Then, the paper dental floss reel 40 is inserted into one mounting hole 311b, passed through the central plug hole of the dental floss reel 300, and then inserted into the other mounting hole 311b, so that the paper dental floss reel 40, the dental floss reel 300 and the paper inner holder 30 are assembled.

[0086] In some examples, the mounting hole 311b may be a through hole or a blind hole.

[0087] In some examples, the paper dental floss reel 40 may be formed of a paper tube having an outer diameter of 5 millimeters (mm) and a wall thickness of 1.5 mm to facilitate the production of the paper dental floss reel 40 .

[0088] For some examples, see Figure 5 As shown, a portion of the first side wall 311 protrudes toward the paper bottom outer box 20 to form a protrusion 311c. The protrusion 311c is provided with a mounting hole 311b. There is a gap between the protrusion 311c and the paper bottom outer box 20. There is a gap between the end of the paper dental floss reel 40 and the paper bottom outer box 20.

[0089] The manner in which the protrusion 311c is provided on the first side wall 311 can help improve the structural strength and pressure resistance of the first side wall 311, thereby helping improve the overall structural strength and pressure resistance of the paper inner support 30. When the first side wall 311 or the paper inner support 30 as a whole is subjected to external force, it is not easy to deform or collapse.

[0090] The paper inner support 30 is an integrally formed structure. The method of directly forming the protrusion 311c on the first side wall 311 replaces the method of separately processing and manufacturing the first side wall 311 and the protrusion 311c and then assembling them, thereby eliminating the process of separately processing the protrusion 311c and bonding the protrusion 311c to the first side wall 311 by an adhesive, and also eliminating the use of adhesives, thereby improving the environmental friendliness of the box assembly 10.

[0091] When the paper inner holder 30 is pressed into the paper bottom outer box 20 or pulled out from the paper bottom outer box 20 , the raised portion 311 c of the first side wall 311 and the end of the paper floss reel 40 are not likely to come into contact with the paper bottom outer box 20 .

[0092] When the paper inner holder 30 and the paper floss reel 40 are loaded into the paper bottom outer box 20, when the paper floss reel 40 rotates relative to the paper inner holder 30, no friction resistance will be generated between the end of the paper floss reel 40 and the paper bottom outer box 20, thereby reducing the possibility of the paper floss reel 40 being difficult to rotate due to excessive friction resistance, and also reducing the possibility of frequent friction between the end of the rotating paper floss reel 40 and the paper bottom outer box 20 to generate debris.

[0093] Exemplarily, the reinforcing portion 311 a on the first side wall 311 is located on a side of the protruding portion 311 c close to the second opening of the paper bottom outer box 20 .

[0094] In some possible implementations, see Figures 3 to 5 As shown, the paper inner tray 30 includes two first side walls 311 and a second side wall 312. The second side wall 312 connects the two first side walls 311. The first side wall 311 and the second side wall 312 enclose a second accommodating cavity 301. At least part of the second side wall 312 is connected to the paper bottom outer box 20 only by friction fit.

[0095] The first side wall 311 and the second side wall 312 can be connected and supported to each other, so as to ensure that the paper inner holder 30 has good structural strength and pressure resistance. When the dental floss roll 300 is installed on the paper dental floss reel 40, the first side wall 311 and the second side wall 312 can protect the dental floss roll 300, and reduce the possibility of deformation or loosening of the dental floss roll 300 due to external force during replacement.

[0096] Exemplarily, the side portion 100 of the second side wall 312 is connected to the side portion 100 of the paper bottom outer box 20 only by friction fit. When the paper inner tray 30 is pressed into the paper bottom outer box 20 or the paper inner tray 30 is pulled out from the paper bottom outer box 20, friction resistance is generated between the side portion 100 of the second side wall 312 and the side portion 100 of the paper bottom outer box 20.

[0097] Exemplarily, the bottom 200 of the paper bottom outer box 20 is connected to the side 100 of the paper bottom outer box 20. The bottom 200 of the paper bottom outer box 20 can be in an arc shape. The bottom 200 of the second side wall 312 is connected to the side 100 of the second side wall 312. The bottom 200 of the second side wall 312 can be in an arc shape. The bottom 200 of the second side wall 312 and the bottom 200 of the paper bottom outer box 20 are matched in shape. When the paper inner support 30 is loaded into the paper bottom outer box 20, the bottom 200 of the second side wall 312 can contact with the bottom 200 of the paper bottom outer box 20.

[0098] In some achievable ways, Figure 6 The partial structure of the paper upper support 50 is schematically shown. Figure 3 , Figure 4 and Figure 6 As shown, the paper upper tray 50 includes a third side wall 51 and a first top wall 52 connected to each other. The third side wall 51 and the first top wall 52 enclose a third accommodating chamber 504. The wire outlet opening 501 and the wire cutter 60 are both arranged on the first top wall 52. The wire outlet opening 501 is connected to the third accommodating chamber 504. The second accommodating chamber 301 of the paper inner tray 30 is connected to the third accommodating chamber 504. The second accommodating chamber 301 and the third accommodating chamber 504 can form an accommodating space for accommodating the dental floss roll 300. At least part of the third side wall 51 is inserted into the second accommodating chamber 301 of the paper inner tray 30. The third side wall 51 and the paper inner tray 30 are detachably connected only by friction fit.

[0099] The third side wall 51 and the first top wall 52 can be connected and supported to each other, so as to ensure that the paper upper support 50 has good structural strength and pressure resistance. No additional connector is required between the third side wall 51 and the paper inner support 30, which is conducive to reducing the number of parts of the box assembly 10 and reducing the assembly process.

[0100] When the paper upper support 50 needs to be separated from the paper inner support 30 , the user can pinch the third side wall 51 and apply pulling force to the paper upper support 50 to overcome the friction resistance between the third side wall 51 and the paper inner support 30 , thereby separating the paper upper support 50 from the paper inner support 30 .

[0101] In some examples, the paper inner support 30 is entirely located inside the paper bottom outer box 20. The paper bottom outer box 20 is higher than the second opening of the paper inner support 30. There is a gap between the second opening of the paper inner support 30 and the first opening of the paper bottom outer box 20. A portion of the third side wall 51 of the paper upper support 50 is inserted into the paper inner support 30, a portion is located inside the paper bottom outer box 20, and a portion is exposed outside the paper bottom outer box 20.

[0102] In some examples, the paper upper support 50 and the paper bottom outer box 20 can be connected only by friction fit. Part of the third side wall 51 and the paper bottom outer box 20 are detachably connected only by friction fit. A pulling force is applied to the paper upper support 50 to overcome the friction resistance between the third side wall 51 and the paper inner support 30 and the friction resistance between the third side wall 51 and the paper bottom outer box 20, so as to separate the paper upper support 50 from the paper inner support 30.

[0103] For some examples, see Figure 4 and Figure 6 As shown, the first top wall 52 has a recess 521 . The wire outlet opening 501 and the wire cutter 60 are respectively disposed on two sides of the recess 521 .

[0104] The manner in which the first top wall 52 is provided with the recess 521 can help improve the structural strength and pressure resistance of the first top wall 52, thereby helping improve the overall structural strength and pressure resistance of the paper support 50. The first top wall 52 or the paper support 50 as a whole is not prone to deformation or collapse when subjected to external force.

[0105] When the dental floss roll 300 is loaded into the box assembly 10, the user extracts a predetermined length of dental floss and then uses the wire cutter 60 to cut the dental floss. The thread ends formed after cutting the dental floss can be placed in the recess 521 of the first top wall 52. When the user uses the dental floss next time, the user's fingers (such as the thumb and index finger) can enter the recess 521 and easily pinch the thread ends, and then extract the dental floss. Therefore, the recess 521 of the first top wall 52 can be used as a finger position, which is convenient for the user to pick up the thread ends of the dental floss, reducing the difficulty of picking up the thread ends and improving the convenience of extracting the dental floss.

[0106] In some examples, the bottom of the recess 521 may be in an arc shape.

[0107] For some examples, see Figure 6 As shown, the first top wall 52 is provided with a dental floss fixing portion 502. The dental floss passing through the thread outlet opening 501 can be fixed on the dental floss fixing portion 502, reducing the possibility of the dental floss being unconstrained and tangled. Exemplarily, there is a gap between the dental floss fixing portion 502 and the first top wall 52. The dental floss can be located in the gap between the dental floss fixing portion 502 and the first top wall 52, and the dental floss fixing portion 502 presses the dental floss.

[0108] In some examples, Figure 7 The structure of the box assembly 10 is schematically shown. Figure 2 , Figure 3 and Figure 7 As shown, the paper cover 70 includes a fourth side wall 71 and a second top wall 72. The fourth side wall 71 and the second top wall 72 can be enclosed to form a fourth accommodating cavity 701. When the paper cover 70 is in the cover-closed position, the fourth accommodating cavity 701 of the paper cover 70 can be connected to the first accommodating cavity 21 of the paper bottom outer box 20. The fourth accommodating cavity 701 of the paper cover 70 and the first accommodating cavity 21 of the paper bottom outer box 20 form an accommodating space. The box assembly 10 includes a paper connector 80. The fourth side wall 71 and the paper bottom outer box 20 are connected by the paper connector 80.

[0109] The paper cover 70 and the paper bottom outer box 20 can be processed separately, and then connected to the paper bottom outer box 20 by the paper connector 80, so that the processing difficulty of the paper cover 70 and the paper bottom outer box 20 can be reduced. When the paper cover 70 is in the open position, since the paper cover 70 is connected to the paper bottom outer box 20 by the paper connector 80, when the paper cover 70 is in the open state, it is not necessary to remove the paper cover 70 and place it in other areas, thereby reducing the possibility of losing the paper cover 70. At the same time, the paper cover 70 can be opened or closed by simply flipping the paper cover 70, which is conducive to improving the convenience of operation of the paper cover 70 and improving the ease of use of the box assembly 10.

[0110] The user can operate the box assembly 10 with one hand and apply a turning moment to the paper cover 70 to improve the convenience of using the box assembly 10. For example, the user can hold the paper bottom outer box 20 with the palm of the hand and use the thumb to apply a turning moment to the paper cover 70 to open or close the paper cover 70.

[0111] Exemplarily, the paper connecting member 80 may be a piece of paper on which information such as text, symbols, and patterns may be printed.

[0112] Exemplarily, the paper upper cover 70 and the paper connecting member 80 are bonded to each other. The paper bottom outer box 20 and the paper connecting member 80 are bonded to each other.

[0113] Exemplarily, one end of the paper connector 80 is connected to the inner surface of the fourth side wall 71. One end of the paper connector 80 is connected to the inner surface of the paper bottom outer box 20.

[0114] In some examples, Figure 8 The partial exploded structure of the paper support 50 and the thread cutter 60 is schematically shown. Figure 2 and Figure 8As shown, the first top wall 52 of the paper upper support 50 is provided with a evacuation slope 522 on the side facing away from the paper connector 80. When the paper upper cover 70 is turned over relative to the paper bottom outer box 20, the evacuation slope 522 of the first top wall 52 is used to evade the fourth side wall 71 of the paper upper cover 70.

[0115] During the flipping process of the paper top cover 70 relative to the paper bottom outer box 20, there will be no positional interference between the first top wall 52 and the paper top cover 70, thereby reducing the possibility of excessive resistance in the opening or closing process of the paper top cover 70 due to positional interference between the first top wall 52 and the paper top cover 70, which is beneficial to improving the ease of use of the box assembly 10 and facilitating the user to open or close the paper top cover 70 with one hand.

[0116] In some achievable ways, Fig. 9 The partial cross-sectional structure of the box assembly 10 is schematically shown. Figure 8 and Fig. 9 As shown, the paper support 50 has an escape opening 503. The wire cutter 60 includes a first clamp 61, a connecting piece 62, a second clamp 63 and a cutting knife 64. The connecting piece 62 connects the first clamp 61 and the second clamp 63. The connecting piece 62 is inserted into the escape opening 503. The wire cutter 60 is clamped on the paper support 50 by the first clamp 61 and the second clamp 63. The first clamp 61 is located on the outer side of the paper support 50. The second clamp 63 is located on the inner side of the paper support 50. The first clamp 61 is provided with a cutting knife 64. The cutting knife 64 is used to cut the dental floss.

[0117] The wire cutter 60 is clamped on the paper upper support 50 by the first clamp 61 and the second clamp 63 to achieve the connection and fixation between the wire cutter 60 and the paper upper support 50, so that no additional connecting parts (such as adhesives) are required between the wire cutter 60 and the paper upper support 50, which is beneficial to reducing the number of components of the box assembly 10 as a whole and improving the environmental friendliness of the box assembly 10.

[0118] The assembly process of the wire cutter 60 and the paper support 50 can be as follows: the second clip 63 is passed through the avoidance opening 503 of the paper support 50, and then the wire cutter 60 is continuously pushed, the second clip 63 passes through the avoidance opening 503 and enters the inner side of the paper support 50, and the connecting piece 62 is inserted into the avoidance opening 503. Then, the first clip 61 is released, so that the first clip 61, the connecting piece 62 and the second clip 63 return to the initial state. The first clip 61 and the second clip 63 clamp the paper support 50.

[0119] In some examples, the first clip 61 and the second clip 63 may be disposed on the same side of the connecting piece 62 , such that the first clip 61 , the connecting piece 62 , and the second clip 63 form a U-shaped structure.

[0120] In some examples, the first top wall 52 of the paper support 50 is provided with an avoidance opening 503. The wire cutter 60 is clamped on the first top wall 52 by clamping the first clamping piece 61 and the second clamping piece 63.

[0121] In some practicable embodiments, at least one of the paper bottom outer box 20, the paper inner support 30, the paper dental floss reel 40, the paper upper support 50, and the paper upper cover 70 is solidified and formed using raw materials including bamboo pulp and bagasse pulp. The total mass proportion of bamboo pulp in the raw materials is 35%, and the total mass proportion of bagasse pulp in the raw materials is 65%.

[0122] Bamboo pulp includes bamboo fiber. The fiber structure of bamboo fiber is compact and the fiber length is relatively long. Bamboo fiber has good mechanical properties such as elastic modulus and tensile strength. Bamboo fiber can help improve the tensile strength of processed paper molded parts, thereby helping to improve the elasticity of paper molded parts. When paper molded parts including bamboo fiber are subjected to force, they can be deformed and are not prone to cracking. Bagasse pulp includes bagasse. The fibers of bagasse are relatively short and have good flexibility. The method in which the total mass of bamboo pulp in the raw material accounts for 35%, and the total mass of bagasse pulp in the raw material accounts for 65%, can help ensure that the paper molded parts themselves have high strength, elasticity and flexibility.

[0123] The paper inner support 30 and the paper bottom outer box 20 are detachably connected by friction fit. At least one of the paper inner support 30 and the paper bottom outer box 20 is solidified and formed using raw materials including bamboo pulp and bagasse pulp, so that at least one of the paper inner support 30 and the paper bottom outer box 20 has elasticity, so that during the process of the paper inner support 30 being pressed into the paper bottom outer box 20, at least one of the paper inner support 30 and the paper bottom outer box 20 can be elastically deformed. After the paper inner support 30 is pressed into the paper bottom outer box 20, under the action of the elastic restoring force, the paper inner support 30 and the paper bottom outer box 20 can maintain a mutually pressed state to maintain a stable connection state, so that the paper inner support 30 and the paper bottom outer box 20 are not easily separated.

[0124] The paper upper support 50 and the paper inner support 30 are detachably connected by friction fit. At least one of the paper upper support 50 and the paper inner support 30 is solidified and formed using raw materials including bamboo pulp and bagasse pulp, so that at least one of the paper upper support 50 and the paper inner support 30 has elasticity, so that during the process of the paper upper support 50 being pressed into the paper inner support 30, at least one of the paper upper support 50 and the paper inner support 30 can be elastically deformed. After the paper upper support 50 is pressed into the paper inner support 30, under the action of the elastic restoring force, the paper upper support 50 and the paper inner support 30 can maintain a mutually pressed state to maintain a stable connection state, so that the paper upper support 50 and the paper inner support 30 are not easily separated.

[0125] When the paper cover 70 is in the cover-closed position, the paper cover 70 and the paper support 50 are connected by friction fit. At least one of the paper cover 70 and the paper support 50 is solidified and formed using raw materials including bamboo pulp and bagasse pulp, so that at least one of the paper cover 70 and the paper support 50 has elasticity. When the paper cover 70 is in the cover-closed position, at least one of the paper cover 70 and the paper support 50 can be elastically deformed. Under the action of the elastic restoring force between the paper cover 70 and the paper support 50, the paper cover 70 and the paper support 50 can maintain a mutually pressed state to maintain a stable connection state, so that the paper cover 70 is not easy to accidentally flip open.

[0126] The ratio of bamboo pulp accounting for 35% of the total mass of the raw materials and bagasse pulp accounting for 65% of the total mass of the raw materials can ensure that the paper molded parts manufactured using the raw materials have good structural strength and pressure resistance, as well as the properties of elastic deformation and not easy to break under force.

[0127] In some examples, the paper bottom outer box 20, the paper inner tray 30, the paper dental floss reel 40, the paper upper tray 50, and the paper upper cover 70 are all solidified and formed using raw materials including bamboo pulp and bagasse pulp.

[0128] In some achievable ways, the smoothness of the outer surface of the paper bottom outer box 20 is greater than the smoothness of the inner surface of the paper bottom outer box 20, so that when the user touches the outer surface of the paper bottom outer box 20, it can have a good touch. The outer surface of the paper bottom outer box 20 is relatively smoother. The relatively rough setting of the inner surface of the paper bottom outer box 20 can help to increase the friction between the paper inner support 30 and the paper bottom outer box 20.

[0129] The smoothness of the outer surface of the paper cover 70 is greater than the smoothness of the inner surface of the paper cover 70, so that when the user touches the outer surface of the paper cover 70, it can have a good touch. The outer surface of the paper cover 70 is relatively smoother. The relatively rough setting of the inner surface of the paper cover 70 can help to increase the friction between the paper cover 70 and the paper support 50.

[0130] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A box assembly, characterized in that: include: A paper bottom outer box, comprising a first accommodating cavity having a first opening; The paper inner tray comprises a second accommodating cavity having a second opening, the paper inner tray is arranged in the first accommodating cavity, the paper inner tray and the paper bottom outer box are detachably connected only by friction fit, the first opening is arranged corresponding to the second opening, and the second accommodating cavity is used to accommodate the dental floss roll; A paper dental floss reel, rotatably connected to the paper inner support, and the paper dental floss reel is used to support the dental floss roll; The paper upper support has a wire outlet opening, the wire outlet opening is connected to the second accommodating cavity, the paper upper support and the paper inner support are detachably connected only by friction fit, and the paper upper support is used to open or cover the second opening; A wire cutter, arranged on the paper upper support, and used for cutting the dental floss led out of the wire outlet opening; A paper upper cover is connected to the paper bottom outer box, and the paper upper cover is flipped relative to the paper bottom outer box to switch between an open position and a closed position. In the closed position, the paper upper cover covers the first opening and forms a accommodating space with the paper bottom outer box. The paper upper cover and the paper upper support are connected only by friction fit. In the open position, the paper upper cover opens the first opening, and the wire outlet opening and the wire cutter are in an exposed state.

2. The box assembly according to claim 1, characterized in that The paper inner support comprises a main body and an outer flange, the main body is provided with the second accommodating cavity, and the outer flange and at least a part of the main body are respectively connected to the paper bottom outer box only by friction fit.

3. The box assembly according to claim 1, characterized in that The paper inner support includes two first side walls, and the two ends of the paper dental floss reel are rotatably connected to the two first side walls respectively. The first side wall includes a reinforcement part, and the reinforcement part is connected to the paper bottom outer box only by friction fit.

4. The box assembly according to claim 3, characterized in that A portion of the first side wall protrudes toward the paper bottom outer box to form the reinforcement portion, and the reinforcement portion is located on a side of the paper dental floss reel close to the second opening.

5. The box assembly according to claim 1, characterized in that The paper inner support includes two first side walls, the first side walls are provided with mounting holes, the ends of the paper floss reel are inserted into the mounting holes, and the ends of the paper floss reel can be rotatably connected to the first side walls only by friction fit.

6. The box assembly according to claim 5, characterized in that A portion of the first side wall protrudes toward the paper bottom outer box to form a raised portion, the raised portion is provided with the mounting hole, a gap is provided between the raised portion and the paper bottom outer box, and a gap is provided between the end of the paper dental floss reel and the paper bottom outer box.

7. The box assembly according to claim 1, characterized in that The paper inner tray includes two first side walls and a second side wall, the second side wall connects the two first side walls, the first side wall and the second side wall enclose the second accommodating cavity, and at least part of the second side wall is connected to the paper bottom outer box only by friction fit.

8. The box assembly according to claim 1, characterized in that The paper upper support includes a third side wall and a first top wall connected to each other, the third side wall and the first top wall enclose a third accommodating cavity, the wire outlet opening and the wire cutter are both arranged on the first top wall, the wire outlet opening is communicated with the third accommodating cavity, the second accommodating cavity is communicated with the third accommodating cavity, at least part of the third side wall is inserted into the second accommodating cavity, and the third side wall and the paper inner support are detachably connected only by friction fit.

9. The box assembly according to claim 8, characterized in that Part of the third side wall is detachably connected to the paper bottom outer box only by friction fit.

10. The box assembly according to claim 8, characterized in that The first top wall has a concave portion, and the wire outlet opening and the wire cutter are respectively arranged on two sides of the concave portion.

11. The box assembly according to claim 8, characterized in that The paper upper cover comprises a fourth side wall and a second top wall, the box assembly comprises a paper connecting piece, and the fourth side wall and the paper bottom outer box are connected via the paper connecting piece.

12. The box assembly according to claim 11, characterized in that A evasion slope is provided on the side of the first top wall facing away from the paper connecting member, and when the paper upper cover is flipped over relative to the paper bottom outer box, the evasion slope is used to evade the fourth side wall.

13. The box assembly according to claim 1, characterized in that The paper upper support has an avoidance opening, and the wire cutter includes a first clip, a connecting piece, a second clip and a cutting knife, the connecting piece connects the first clip and the second clip, the connecting piece is passed through the avoidance opening, and the wire cutter is clamped on the paper upper support by the first clip and the second clip, the first clip is located on the outer side of the paper upper support, the second clip is located on the inner side of the paper upper support, and the first clip is provided with the cutting knife.

14. The box assembly according to claim 1, characterized in that At least one of the paper bottom outer box, the paper inner support, the paper dental floss reel, the paper upper support and the paper upper cover is solidified and formed using raw materials including bamboo pulp and bagasse pulp, the total mass of the bamboo pulp in the raw materials accounts for 35%, and the total mass of the bagasse pulp in the raw materials accounts for 65%.

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