Box cover and turnover box
By designing the inclined flow guide surface and drainage tank structure on the turnover box cover, the problem of liquid accumulation in the box cover entering the box is solved, and effective liquid discharge and item protection are achieved.
Patent Information
- Application Number
- CN202421779010.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-07-25
AI Technical Summary
The lid of the existing turnover box is prone to liquid accumulation during use, and the liquid enters the inside of the box through the seams and affects the items.
A box cover is designed with an inclined flow guide surface and drainage groove structure. The flow guide surface guides the liquid to the drainage groove, which extends to the edge of the cover body to discharge liquid, and combines the second drainage groove and the water barrier structure to prevent liquid from entering the box.
Effectively prevent liquid from stagnating on the box cover and entering the box body, protecting items, improving the service life of the box cover and preventing fluid accumulation.
Smart Images
Figure CN223132906U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of turnover boxes, and in particular to a box cover and a turnover box. Background Art
[0002] In the related art, during the use of a turnover box with a top cover, liquid easily accumulates on the box cover, and the liquid remaining on the box cover easily enters the interior of the box through the seams of the box cover, affecting the items housed inside. Summary of the Utility Model
[0003] The present application aims to at least solve one of the technical problems existing in the prior art. For this purpose, the present application provides a box cover with a liquid drainage function, and the present application also provides a turnover box with this box cover.
[0004] In a first aspect, a box cover according to an embodiment of the present application is adapted to be connected to a box body of a turnover box, and includes:
[0005] A cover body having an upper side and a lower side opposite to each other. The upper side surface of the cover body defines a support surface and a diversion surface. The cover body is provided with a first drainage groove, and at least one end of the first drainage groove extends to the edge of the cover body. There is a distance between at least a part of the support surface and the first drainage groove, and the support surface is connected to the groove wall of the first drainage groove through the diversion surface. The diversion surface is inclined downward from the support surface to the direction of the first drainage groove, and is used for guiding the liquid on the diversion surface to the first drainage groove;
[0006] A first connection portion connected to the cover body, and the first connection portion is adapted to be connected to the box body.
[0007] The box cover according to the embodiment of the present application has at least the following beneficial effects: By providing a support surface and a diversion surface, and the diversion surface is connected to a first drainage groove, the turnover box can not only be stacked normally, but also the water can be guided from the diversion surface to the first drainage groove. At least one end of the first drainage groove is connected to the edge of the cover body to drain the liquid away from the box cover, avoiding the liquid remaining on the box cover and entering the box to affect the items.
[0008] In the box cover according to some embodiments of the present application, the cover body is further provided with a second drainage groove, and the second drainage groove is at least recessed downward from the support surface. The second drainage groove communicates the support surface and the diversion surface, and is used for draining the liquid on the support surface to the diversion surface.
[0009] In the box cover according to some embodiments of the present application, the bottom surface of the second drainage groove is inclined downward from the support surface to the direction of the diversion surface, and is used for guiding the liquid on the support surface to the diversion surface.
[0010] The lid of the box according to some embodiments of the present application, wherein the second drainage groove is provided at the connection between the support surface and the diversion surface, and the second drainage groove is formed by being recessed downward from the support surface and the diversion surface.
[0011] The lid of the box according to some embodiments of the present application, wherein the first drainage groove extends along a first direction, the support surface and the first drainage groove are arranged along a second direction, and the first direction is perpendicular to the second direction.
[0012] The lid of the box according to some embodiments of the present application, wherein the second drainage groove extends along the second direction; and / or, the lid body is provided with at least two second drainage grooves arranged at intervals along the first direction.
[0013] The lid of the box according to some embodiments of the present application, the lid of the box includes two lid bodies, the two lid bodies are arranged along the plane where the support surface is located, and the adjacent edges of the lid bodies are spliced to form a splicing seam, wherein:
[0014] The first drainage groove extends to the edge of the lid body different from the splicing seam;
[0015] A first connecting portion is connected to the side edge of the lid body facing away from the splicing seam, and the first connecting portion is adapted to be rotatably connected to the box body.
[0016] The lid of the box according to some embodiments of the present application, at least one of the lid bodies is provided with a flange on the edge corresponding to the splicing seam, and the flange extends along the splicing seam and protrudes upward relative to the support surface.
[0017] The lid of the box according to some embodiments of the present application, at least one of the lid bodies is connected with a water baffle on the edge corresponding to the splicing seam, the water baffle includes a second connecting portion and a water blocking portion, the second connecting portion is located below the splicing seam and is connected to the lid body, and the water blocking portion protrudes from the upper side surface of the second connecting portion.
[0018] In a second aspect, a turnover box according to an embodiment of the present application includes:
[0019] A box body, an accommodation cavity with an upper opening is formed inside;
[0020] The lid of the box according to any one of the above embodiments, the first connecting portion is connected to the box body, and the lid body is used to cover the opening, and the opening is opened or closed by the movement of the lid body relative to the box body.
[0021] The turnover box according to the embodiments of the present application has at least the following beneficial effects: In the turnover box, the lid of the first aspect embodiment is adopted. During assembly, the lid is connected to the box body through the first connecting portion to open or close the turnover box. The turnover box can be stacked normally through the supporting surface, and the liquid can be drained away from the lid through the guiding surface and the first drainage groove, thereby protecting the contained items.
[0022] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings
[0023] Figure 1 Schematic diagram of the lid in the embodiment of the present utility model;
[0024] Figure 2 Side view schematic diagram of the lid in the embodiment of the present utility model;
[0025] Figure 3 Schematic diagram of the lid in the embodiment of the present utility model;
[0026] Figure 4 For Figure 3 Partial enlarged schematic diagram of point A in
[0027] Figure 5 Schematic diagram of the lid in the embodiment of the present utility model;
[0028] Figure 6 For Figure 5 Cross-sectional view taken along line B - B in
[0029] Figure 7 Schematic diagram of the turnover box in the embodiment of the present utility model.
[0030] Reference Signs:
[0031] Lid 100; Cover body 110; Supporting surface 111; Guiding surface 112; First drainage groove 113; Groove wall 1131; Second drainage groove 114; Bottom surface 1141; First connecting portion 120; Seam 130; Flange 131; Water baffle 140; Second connecting portion 141; Water blocking portion 142; Abutting portion 143; Protrusion 150; Recess 160; Limit block 170; Through hole 180; Groove structure 190; Locking member 191; Adhesive surface 192;
[0032] Turnover box 200; Box body 210; Accommodation cavity 211; Opening 212. Detailed Embodiments
[0033] The concept of this application and the technical effects produced will be clearly and completely described below in conjunction with the embodiments to fully understand the purpose, features, and effects of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all embodiments. Based on the embodiments of this application, other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of this application.
[0034] In the description of the embodiments of this application, if it involves orientation description, such as "upper", "lower", "front", "rear", "left", "right", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to this application.
[0035] In the description of the embodiments of this application, if a certain feature is referred to as "arranged", "fixed", "connected", "installed" on another feature, it can be directly arranged, fixed, connected, installed on another feature, or indirectly arranged, fixed, connected, installed on another feature. In the description of the embodiments of this application, if it involves "several", its meaning is more than one; if it involves "multiple", its meaning is more than two; if it involves "greater than", "less than", "exceeding", it should be understood as not including the number itself; if it involves "above", "below", "within", it should be understood as including the number itself. If it involves "first", "second", it should be understood as being used to distinguish technical features, rather than indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.
[0036] The embodiments of this application provide a box cover and a turnover box. In the box cover, a support surface, a diversion surface, and a first drainage groove are provided on the upper side of the cover body. The liquid on the support surface and the diversion surface can be guided to the first drainage groove through the diversion surface. Since the end of the first drainage groove extends to the edge of the cover body, the first drainage groove can drain the liquid from the edge of the cover body, effectively solving the problem of liquid accumulation on the box cover and reducing the probability of the liquid on the box cover entering the interior of the box body through the joint of the box cover.
[0037] The embodiments of this application will be introduced below in conjunction with the accompanying drawings of the specification:
[0038] Refer to Figures 1 to 6 As shown, the box cover 100 of the first aspect embodiment of this application. Refer to Figure 1 As shown, the box cover 100 is suitable for connecting the box body 210 of the turnover box 200. The box cover 100 includes a cover body 110 and a first connecting portion 120.
[0039] Among them, the cover body 110 has opposite upper and lower sides. The upper side surface of the cover body 110 defines a support surface 111 and a diversion surface 112, and the diversion surface 112 is inclined relative to the support surface 111. The cover body 110 is also provided with a first drainage groove 113. There is a spacing between at least a part of the support surface 111 and the first drainage groove 113. The support surface 111 is connected to the groove wall 1131 of the first drainage groove 113 through the diversion surface 112, that is, the support surface 111 and the first drainage groove 113 are arranged at intervals, and the two are connected through the diversion surface 112. The diversion surface 112 is inclined downward in the direction from the support surface 111 to the first drainage groove 113, that is, one end of the diversion surface 112 is connected to the support surface 111, and the other end is connected to the first drainage groove 113. The end of the diversion surface 112 connected to the support surface 111 is higher than the end of the diversion surface 112 connected to the drainage groove, so as to guide the liquid on the diversion surface 112 to the first drainage groove 113. At least one end of the first drainage groove 113 extends to the edge of the cover body 110, and the liquid in the first drainage groove 113 can flow along the first drainage groove 113 and drain away from the edge of the cover body 110, realizing the box cover 100 with a drainage function.
[0040] The first connecting portion 120 is connected to the cover body 110, and the cover body 110 is connected to the box body 210 through the first connecting portion 120.
[0041] Specifically, the cover body 110 is movably connected to the box body 210 through the first connecting portion 120 and closes the box body 210 to protect the items inside the box body 210. Since the turnover box 200 needs to be transported and moved during use, these processes will cause shaking. When there is liquid on the support surface 111 and the diversion surface 112, the liquid on the support surface 111 will flow to the diversion surface 112 under the shaking of the turnover box 200. The diversion surface 112 has a certain inclination angle. After the liquid flows to the diversion surface 112, it will be guided from the diversion surface 112 to the first drainage groove 113. The liquid will be accommodated in the first drainage groove 113 and flow along the first drainage groove 113 and drain away from the edge of the cover body 110, thus avoiding the liquid staying on the cover body 100. Reducing the liquid accumulation on the cover body 100 can effectively prevent the liquid from entering the box body 210 and affecting the items.
[0042] In application, even if the box cover 100 is deformed with a downward depression, it is difficult to accumulate water at the depression position due to the drainage effect of the first drainage groove 113 and the diversion surface 112, thus effectively preventing the liquid from entering the box body 210 and being beneficial to improving the service life of the box cover 100.
[0043] In this embodiment, the first connecting portion 120 is a rotating shaft structure, and the entire lid 100 is fixed to the box body 210 by rotating the rotating shaft to realize the opening and closing of the lid 100. In other embodiments, the first connecting portion 120 can also be connected to the box body 210 by snap connection, or lock connection, or threaded connection and other methods for connection and fixation.
[0044] In some embodiments, referring to Figure 1 and Figure 3 As shown, the cover body 110 is further provided with a second drainage groove 114. The second drainage groove 114 is at least recessed downward from the support surface 111. The second drainage groove 114 communicates the support surface 111 and the diversion surface 112 and is used to drain the liquid on the support surface 111 to the diversion surface 112. Specifically, at least a part of the second drainage groove 114 is provided on the support surface 111. The support surface 111 is recessed from the upper side to the lower side of the cover body 110 to form the second drainage groove 114. The second drainage groove 114 communicates the support surface 111 and the diversion surface 112 so that the liquid on the support surface 111 can enter the second drainage groove 114 and then be guided to the diversion surface 112, thereby reducing the possibility of liquid accumulation on the support surface 111 and further avoiding the damage of the items stored in the box body 210.
[0045] In some embodiments, referring to Figures 1 to 3 As shown, the second drainage groove 114 is inclined. The bottom surface 1141 of the second drainage groove 114 is inclined downward along the direction from the support surface 111 to the diversion surface 112. The inclined setting can facilitate the guiding of the liquid in the second drainage groove 114 to the diversion surface 112 after the liquid on the support surface 111 flows into the second drainage groove 114, and improve the liquid drainage ability of the cover body 110.
[0046] In some embodiments, referring to Figures 1 to 3 As shown, the second drainage groove 114 is provided at the connection between the support surface 111 and the diversion surface 112. The second drainage groove 114 is provided on both the support surface 111 and the diversion surface 112, and the second drainage groove 114 communicates the support surface 111 and the diversion surface 112 at the connection between the support surface 111 and the diversion surface 112. The second drainage groove 114 is recessed from the upper side to the lower side of the support surface 111 and the diversion surface 112.
[0047] In some embodiments, referring to Figure 3As shown, the first drain groove 113 extends along the first direction, that is, the first drain groove 113 extends in the first direction, so that at least one end of the first drain groove 113 is connected to the edge of the cover body 110, enabling the liquid to flow along the first drain groove 113 to drain away from the box cover 100. In this embodiment, both ends of the first drain groove 113 extend to the edge of the cover body 110, thereby increasing the liquid drainage speed of the box cover 100. In other embodiments (not shown in the figure), only one end of the first drain groove 113 may extend to the edge of the cover body 110, and this arrangement can also drain the liquid from the first drain groove 113 away from the upper side of the box cover 100. Further, the support surface 111 and the first drain groove 113 are arranged along the second direction, and the first direction is perpendicular to the second direction. Making the first direction perpendicular to the second direction can enable the support surface 111 and the first drain groove 113 to have a reasonable layout structure, and when the turnover box 200 is stacked, the concentration of local stress on the support surface 111 can be reduced. In some embodiments (not shown in the figure), the second direction may not be absolutely perpendicular to the first direction, allowing for some deviation, that is, the first drain groove 113 and the support surface 111 may be inclined relative to the extension mode of the first drain groove 113.
[0048] Further, referring to Figure 3 As shown, the second drain groove 114 extends along the second direction, and the extension direction of the second drain groove 114 is perpendicular to the extension direction of the first drain groove 113, whereby the liquid entering the second drain groove 114 can be guided into the first drain groove 113 faster, increasing the liquid drainage speed of the box cover 100. Further, the cover body 110 is provided with at least two second drain grooves 114 arranged at intervals along the first direction. In this embodiment, the number of the second drain grooves 114 provided on the cover body 110 is more than two, and the multiple second drain grooves 114 are arranged at intervals to increase the liquid drainage speed of the support surface 111 and reduce the possibility of liquid accumulation on the box cover 100. In other embodiments (not shown in the figure), the number of the second drain grooves 114 is two, and the two second drain grooves 114 are arranged at intervals, enabling the liquid at both ends of the support surface 111 to be respectively guided to the diversion surface 112 through the two second drain grooves 114.
[0049] In some embodiments, referring to Figure 3 and Figure 4As shown in the figure, the lid 100 includes two lid bodies 110. The two lid bodies 110 are arranged along the plane where the support surface 111 is located. The adjacent edges of the lid bodies 110 are spliced to form a splicing seam 130. Among them, the first drainage groove 113 extends to the edge of the lid body 110 different from the splicing seam 130, that is, the edge where the end of the first drainage groove 113 extends is not the same as the edge where the splicing seam 130 is formed. In this embodiment, the first direction is the length direction of the lid body 110, the second direction is the second direction of the lid body 110, the edge where the splicing seam 130 is formed is the length edge of the lid body 110, and the edge where the first drainage groove 113 extends is the width edge of the lid body 110. Further, a first connecting portion 120 is connected to the edge of the lid body 110 facing away from the splicing seam 130. The first connecting portion 120 is adapted to be rotatably connected to the box body 210. That is, there are two sides of the length edge of the lid body 110. A first connecting portion 120 is connected to one side of the length edge, while the other length edge forms the splicing seam 130. The splicing seam 130 and the first connecting portion 120 are arranged oppositely.
[0050] Further, referring to FIGS. 1 and Figure 5 As shown in the figure, the edge of the lid body 110 where the splicing seam 130 is formed includes a convex portion 150 and a concave portion 160. The convex portion 150 and the concave portion 160 are alternately connected in sequence to form an edge with a concave-convex structure. The convex portion 150 and the concave portion 160 of the adjacent lid bodies 110 are cooperatively spliced.
[0051] In some embodiments, referring to Figure 3 and Figure 4 As shown in the figure, at least one lid body 110 is provided with a flange 131 on the edge corresponding to the splicing seam 130. The flange 131 extends along the splicing seam 130 and protrudes upward relative to the support surface 111. Specifically, the flange 131 is formed along the shape of the edge where the splicing seam 130 is formed, and the flange 131 protrudes upward relative to the support surface 111. The flange 131 can be integrally formed on the edge of the lid body 110 corresponding to the splicing seam by injection molding or the like, or can be fixed on the edge of the lid body 110 corresponding to the splicing seam by a fixed connection or a detachable connection method.
[0052] Since the edge of the splicing seam 130 is the joint of the lid bodies 110 and there is a certain gap at the joint, the protruding setting of the flange 131 can isolate the liquid and prevent the liquid from flowing into the interior of the turnover box 200 from the joint of the two lid bodies 110, that is, the splicing seam 130.
[0053] In some embodiments, referring to Figure 5 and Figure 6As shown, at least one cover 110 is connected with a water baffle 140 on the edge corresponding to the joint 130. The water baffle 140 includes a second connecting portion 141 and a water blocking portion 142. The second connecting portion 141 is located below the joint 130 and is connected to the cover 110. The water blocking portion 142 protrudes from the upper side surface of the second connecting portion 141. Specifically, the water baffle 140 is connected to the edge of the joint 130 through the second connecting portion 141. The water blocking portion 142 surrounds the edge of the second connecting portion 141 and protrudes relative to the upper surface of the second connecting portion 141, so that the water baffle 140 forms a surrounding structure with a certain height. When liquid flows in from the joint 130, the liquid will be stored in the surrounding structure of the water baffle 140. Due to the protruding setting of the water blocking portion 142, the liquid will be stored in the water baffle 140 and cannot enter the box body 210 from the water baffle 140, avoiding the situation that the liquid directly flows into the inside of the turnover box 200 through the joint 130.
[0054] Further, referring to Figure 6 As shown, the water baffle 140 further includes an abutting portion 143. When two covers 110 cooperate with each other to close the box body 210 of the turnover box 200, the bottom of one cover 110 will abut in the abutting portion 143 of the water blocking portion 142 of the other cover 110. An abutting groove is provided at the bottom of the cover 110, and the abutting groove is adapted to the abutting portion 143. When the two covers 110 are connected, the abutting groove and the abutting portion 143 will limit the movement of the cover 110, position the two covers 110, and thus improve the connection strength of the two covers 110.
[0055] Referring to Figures 1 to 7 , an embodiment of the present application further provides a turnover box 200 having the above-mentioned box cover 100. The turnover box 200 in the embodiment of the present application includes a box body 210 and the box cover 100 described in any of the above embodiments. Referring to Figure 7 As shown, the box body 210 defines an accommodation cavity 211. The accommodation cavity 211 is the internal space of the box body 210 and is used for storing items. Among them, the upper part of the accommodation cavity 211 has an opening 212. The box cover 100 is connected to the box body 210 through the first connecting portion 120, and the opening 212 is closed by the cover 110. The cover 110 can move relative to the box body 210 to open or close the opening 212 of the accommodation cavity.
[0056] In this embodiment, referring to Figure 7 As shown, the turnover box 200 uses two covers 110 to close the opening 212 of the box body 210. The two covers 110 are respectively connected to both sides of the box body 210 through the first connecting portion 120. The two covers 110 jointly close the opening 212 of the box body 210 through the alternately arranged convex portions 150 and concave portions 160.
[0057] In other embodiments (not shown in the figures), the cover 110 for closing the opening 212 of the box body 210 may also have other numerical features, such as one. The cover 110 is connected to one side of the box body 210 through the first connecting portion 120, and the opening 212 of the accommodating cavity is opened or closed by the opening and closing of one cover 110. It may also be three, or four, or other multiple numerical features such as these.
[0058] In some embodiments, referring to Figures 1 to 5 as shown, the box cover 100 is further provided with a limiting block 170. When multiple turnover boxes 200 need to be stacked, the limiting block 170 can position the multiple turnover boxes 200 so that the turnover boxes 200 are placed within the limiting space range, avoiding the problems of being uneven and the center of gravity shifting. Further, through holes 180 are provided on the side surface of the box cover 100. The through holes 180 are seal holes, and the through holes 180 are used for a seal to pass through to connect the box cover 100 and the box body 210 to each other.
[0059] Further, referring to Figure 3 and Figure 5 as shown, a groove structure 190 is provided on the upper side of the box cover 100. The groove structure 190 is recessed downward relative to the upper side. The bottom surface of the groove structure 190 is an adhesive surface 192, and a locking member 191 is provided on the adhesive surface 192. Among them, the locking member 191 is a lock buckle for locking and fixing the box cover 100 and the box body 210. The adhesive surface 192 is used for pasting a label. After the locking member 191 locks the box cover 100 and the box body 210, the label is pasted on the box cover 100 and the lock buckle. After the label is pasted, the box cover 100 can only be opened by destroying the label, thereby improving the safety of the turnover box 200.
[0060] The above has described the embodiments of the present application in detail with reference to the accompanying drawings. However, the present application is not limited to the above embodiments. Various changes can be made without departing from the gist of the present application within the knowledge scope of those of ordinary skill in the art to which the present application pertains. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
Claims
1. A lid adapted to be connected to a box body of a turnover box, characterized in that, include: A cover body, having an upper side and a lower side opposite to each other, wherein the upper side surface of the cover body defines a support surface and a guide surface, wherein the cover body is provided with a first drainage groove, wherein at least one end of the first drainage groove extends to the edge of the cover body, wherein at least a portion of the support surface is spaced from the first drainage groove and connected to the groove wall of the first drainage groove through the guide surface, wherein the guide surface is inclined downward from the support surface to the first drainage groove, and is used to guide the liquid on the guide surface to the first drainage groove; The first connection portion is connected to the cover body, and the first connection portion is suitable for connecting to the box body.
2. The lid according to claim 1, characterized in that, The cover body is further provided with a second drainage groove, which is at least recessed downward from the support surface. The second drainage groove connects the support surface and the guide surface and is used to drain the liquid on the support surface onto the guide surface.
3. The lid according to claim 2, characterized in that, The bottom surface of the second drainage groove is inclined downward from the supporting surface to the guide surface, so as to guide the liquid on the supporting surface to the guide surface.
4. The lid according to claim 2, characterized in that, The second drainage groove is arranged at the connection between the support surface and the guide surface, and the second drainage groove is formed by being recessed downward from the support surface and the guide surface.
5. The lid according to claim 2, characterized in that, The first drainage groove is extended along a first direction, the support surface and the first drainage groove are arranged along the second direction, and the first direction is perpendicular to the second direction.
6. The lid according to claim 5, characterized in that, The second drainage groove is extended along the second direction; and / or the cover body is provided with at least two second drainage grooves spaced apart along the first direction.
7. The lid according to claim 1, characterized in that, The box cover comprises two cover bodies, which are arranged along the plane where the support surface is located, and the adjacent edges of the cover bodies are spliced to form a seam, wherein: The first drainage groove extends to an edge of the cover body that is different from the joint; The first connection portion is connected to an edge of the cover body that is away from the joint, and the first connection portion is suitable for being rotatably connected to the box body.
8. The lid according to claim 7, characterized in that, At least one of the cover bodies is provided with a flange on an edge corresponding to the joint, and the flange extends along the joint and is arranged to protrude upward relative to the support surface.
9. The lid according to claim 8, characterized in that, At least one of the cover bodies is connected with a water retaining plate on the edge corresponding to the joint, and the water retaining plate includes a second connecting portion and a water retaining portion, the second connecting portion is located below the joint and connected to the cover body, and the water retaining portion is protruded from the upper surface of the second connecting portion.
10. Turnover box, characterized in that, include: The box body has a receiving cavity with an upper opening formed therein; According to any one of claims 1 to 9, the first connecting portion is connected to the box body, the cover body is used to cover the opening, and the opening is opened or closed by movement of the cover body relative to the box body.