magazine

Abstract

The present disclosure provides a storage box. The storage box comprises a box body and a cover plate. The box body is provided with an opening at an end thereof in a first direction. The box body comprises a first side wall, a side wall edge of the first side wall defining a part of the opening in the first direction. The first side wall is provided with a connecting hole close to the side wall edge. The cover plate covers the opening. The cover plate comprises a peripheral wall, which is opposite to and outside the first side wall. An inner side of the peripheral wall is provided with a connecting protrusion, which passes through the connecting hole to connect the cover plate with the box body. According to the storage box provided by the present disclosure, since the connecting hole is located on the first side wall and does not protrude beyond the side wall edge, only a through hole needs to be processed on the first side wall through a simple process during the manufacturing process, which can reduce the corner waste generated during the manufacturing process, improve the material utilization rate, and reduce the production cost.

Description

Technical Field

[0001] This disclosure relates to the field of household goods technology, specifically to a storage box. Background Technology

[0002] In daily life, storage boxes are commonly used for storing items such as shoes. Traditionally, storage boxes were typically made by folding sheet material, with a protruding snap-fit ​​structure at the opening to connect the box to the lid. However, this snap-fit ​​structure protruded from the box body, resulting in a large amount of scrap material during sheet cutting, increasing raw material costs and waste. Utility Model Content

[0003] In view of this, the present disclosure provides a storage box to improve material utilization and reduce production costs.

[0004] The storage box disclosed herein includes a box body and a lid. The box body has an opening at one end in a first direction. The box body includes a first sidewall, the edge of which defines a portion of the opening. The first sidewall has a connecting hole near its edge. The lid covers the opening. The lid includes a peripheral wall facing and located outside the first sidewall. A connecting protrusion protrudes from the inner side of the peripheral wall, passing through the connecting hole to connect the lid to the box body.

[0005] According to the storage box provided in this disclosure, since the connecting hole is located on the first side wall and does not protrude beyond the edge of the side wall, the connecting hole can be formed simply by machining a through hole on the first side wall during manufacturing. This reduces waste generated during manufacturing, improves material utilization, and lowers production costs. Furthermore, the storage box with the above structure forms a reliable connection structure by engaging the connecting hole on the first side wall with the connecting protrusion on the inner side of the outer wall of the cover, thus connecting the cover to the box body. This simplifies the assembly process, making the assembly and disassembly of the cover and box body convenient and secure, effectively preventing accidental loosening of the cover. The outer wall is located outside the first side wall, which effectively prevents dust or debris from entering the box body through gaps.

[0006] Alternatively or supplementally, the cover plate also includes an inner wall, which is opposite to and inside the first side wall. Two guide protrusions are provided on the surface of the inner wall facing the first side wall. The two guide protrusions are located on opposite sides of the connecting protrusions in the width direction of the connecting protrusions.

[0007] According to the above structure, by placing two guide protrusions on both sides of the connecting protrusion in the width direction, during the assembly of the box and the cover, the first sidewall is deformed by compression under the action of the two guide protrusions and the connecting protrusion. This causes the first sidewall located between the two guide protrusions to be recessed towards the outer wall, allowing the connecting protrusion to pass smoothly and accurately through the connecting hole. After the connecting protrusion passes through the connecting hole, the first sidewall returns to its original shape, achieving a stable connection between the box and the cover. After the box and the cover are assembled, the guide protrusion provides limiting support on the inner side of the first sidewall, forming a clamping structure with the outer wall. This effectively prevents the connecting protrusion from loosening from the connecting hole due to external forces during use, thus ensuring a reliable connection between the connecting protrusion and the connecting hole.

[0008] Alternatively or supplementally, the connecting protrusion and the guiding protrusion partially overlap in the thickness direction of the first sidewall.

[0009] If the connecting protrusion and the guiding protrusion do not overlap in the thickness direction of the first sidewall, that is, if the connecting protrusion and the guiding protrusion are spaced apart in the thickness direction of the first sidewall, the guiding protrusion cannot make effective contact with the first sidewall during the assembly of the box and the cover. This results in the first sidewall not undergoing the required deformation under the action of the guiding protrusion, making it easy for misalignment to occur when the connecting protrusion passes through the connecting hole. After assembly, the guiding protrusion also cannot provide effective limiting support. Therefore, the storage box with the above structure can ensure that the guiding protrusion can make effective contact with the first sidewall during the assembly of the box and the cover, allowing the first sidewall to undergo sufficient deformation under the action of the guiding protrusion, thereby ensuring that the connecting protrusion passes through the connecting hole smoothly and accurately. In addition, after assembly is completed, the guiding protrusion can also provide limiting support on the inner side of the first sidewall, effectively preventing the connecting protrusion from becoming loose from the connecting hole.

[0010] Alternatively or supplementarily, the overlap dimension of the connecting protrusion and the guiding protrusion in the thickness direction of the first sidewall is P, the thickness of the first sidewall is T, and 1.8≤P / T≤3.6.

[0011] If the ratio P / T is too small, meaning the overlap dimension P of the connecting protrusion and the guide protrusion in the thickness direction of the first sidewall is too small, the deformation of the first sidewall under the action of the guide protrusion will be too small during the assembly of the box and the cover. This will make it easy for misalignment to occur when the connecting protrusion passes through the connecting hole. In addition, after assembly, the guide protrusion cannot provide an effective limiting effect, increasing the risk of the connecting protrusion becoming loose from the connecting hole. If the ratio P / T is too large, meaning the overlap dimension P of the connecting protrusion and the guide protrusion in the thickness direction of the first sidewall is too large, the first sidewall will experience excessive deformation under the action of the guide protrusion during the assembly of the box and the cover. This can cause irreversible deformation or even cracking of the first sidewall, thereby affecting the service life and structural integrity of the storage box. Therefore, within the reasonable range of 1.8≤P / T≤3.6, the first sidewall can undergo moderate deformation under the action of the guide protrusion, allowing the connecting protrusion to pass smoothly and accurately through the connecting hole. The guide protrusion can provide a reliable limiting effect and also prevent the first sidewall from cracking due to excessive deformation.

[0012] Alternatively or supplementally, each guide protrusion includes a ramp surface and a parallel surface sequentially connected along a first direction. The ramp surface gradually slopes towards the outer wall as it approaches the parallel surface, and the parallel surface is parallel to the first side wall.

[0013] Based on the above structure, by employing guide protrusions with sequentially connected ramp surfaces and parallel surfaces, the first sidewall can smoothly deform under the guidance of the ramp surface during the assembly of the box and cover plate. This effectively reduces assembly resistance and avoids stress concentration caused by instantaneous deformation of the first sidewall, which could lead to structural damage. After assembly, the parallel surface provides effective limiting, effectively preventing the connecting protrusion from becoming loose from the connecting hole.

[0014] Alternatively or supplementally, the two ends of the ramp surface are located on opposite sides of the connecting protrusion in the first direction.

[0015] According to the above structure, during the assembly of the box and the cover, the first sidewall makes contact with one end of the ramp surface before contacting the connecting protrusion. Under the guidance of the ramp surface, the first sidewall can undergo smooth deformation before contacting the connecting protrusion, which can further reduce assembly resistance, avoid structural damage to the first sidewall, and ensure a smoother and more natural assembly process.

[0016] Alternatively or supplementally, the connecting protrusion gradually slopes in a first direction from its bottom end to its top end.

[0017] The connecting protrusion adopts a structure that gradually slopes in a first direction from its bottom to its top. This guides the first sidewall to smoothly enter between the outer and inner walls, reducing assembly resistance. It also allows the connecting protrusion to mechanically interlock with the connecting hole after passing through it. When subjected to vibration or external force, the connecting protrusion abuts against the edge of the connecting hole, preventing it from detaching. This improves the reliability of the connection between the connecting protrusion and the connecting hole, thereby enhancing the reliability of the connection between the housing and the cover.

[0018] Alternatively or supplementarily, the connecting protrusion includes a first side surface and a second side surface sequentially along the first direction. The angle between the first side surface and the outer perimeter wall is smaller than the angle between the second side surface and the outer perimeter wall.

[0019] Based on the above structure, the angle between the first side and the outer wall is small, meaning the first side is relatively steep. During the assembly of the box and the cover, this reduces the obstruction of the first side to the first side wall, thereby effectively reducing assembly resistance. Simultaneously, the angle between the second side and the outer wall is large, meaning the second side is relatively gentle. This allows the connecting protrusion to pass through the connecting hole more smoothly after the edge of the connecting hole crosses the first side and contacts the second side, preventing jamming.

[0020] Alternatively or supplementally, the connecting protrusion includes, from its bottom end to its top end, a section of equal width and a tapered section. The tapered section gradually decreases in width towards the top end.

[0021] Based on the above structure, the tapering section adopts a wedge-shaped structure with its width gradually decreasing towards the top. When the connecting protrusion passes through the connecting hole, the tapering structure of the tapering section can effectively guide the connecting protrusion, not only guiding it to precise alignment but also reducing assembly resistance and avoiding jamming caused by local interference during assembly, thus ensuring that the connecting protrusion passes smoothly through the connecting hole. Furthermore, the equal-width section can mate with the connecting hole to prevent the connecting protrusion from becoming loose.

[0022] Alternatively, the two corners of the connecting hole near the edge of the side wall are rounded.

[0023] Rounded corners at the two corners near the sidewall edge of the connection hole effectively prevent stress concentration at these corners. When the connection hole is under stress, the rounded corners, with their smooth transition contours, allow stress to be evenly distributed, reducing the risk of cracks or breakage caused by stress concentration at the two corners. This enhances the overall structural strength of the connection hole, improving the service life and reliability of the housing. Attached Figure Description

[0024] It should be understood that the following figures only illustrate certain embodiments of this disclosure and should not be construed as limiting the scope.

[0025] It should be understood that the same or similar reference numerals are used in the accompanying drawings to denote the same or similar elements.

[0026] It should be understood that the accompanying drawings are only schematic, and the dimensions and scales of the elements in the drawings are not necessarily precise.

[0027] Figure 1 This is a schematic diagram of the structure of a storage box provided according to an embodiment of the present disclosure.

[0028] Figure 2 for Figure 1 A partial schematic cross-sectional view of the storage box in the middle.

[0029] Figure 3 for Figure 1 A schematic diagram of the structure of the cover of the storage box.

[0030] Figure 4 for Figure 1 Another structural diagram of the cover of the storage box in the picture.

[0031] Figure Labels Storage box - 100; Box body - 10; First side wall - 11; Connecting hole - 111; Cover plate - 20; Outer wall - 30; Connecting protrusion - 31; First side - 311; Second side - 312; Inner wall - 40; Guide protrusion - 41; Sloping surface - 411; Parallel surface - 412. Detailed Implementation

[0032] Numerous specific details are set forth below to provide an understanding of the structure, function, and use of the embodiments described and illustrated in the specification and figures. It is to be understood that the embodiments described and illustrated herein are non-limiting examples, and thus it will be appreciated that the particular structural and functional details disclosed herein are representative and exemplary. Variations and changes may be made to these embodiments without departing from the scope of the claims.

[0033] A storage box 100 according to an embodiment of the present disclosure is provided in... Figure 1 As shown below. The overall structure of storage box 100 will be illustrated with an example below. It should be noted that the structure of storage box 100 should not be limited to the description below. For example, one or more elements mentioned below may be omitted or replaced, and their layout relationships may be changed.

[0034] refer to Figure 1The storage box 100 may include a box body 10 and a cover 20. By way of example only, the box body 10 is integrally formed from an elastically deformable sheet material through folding. The box body 10 has an opening at one end in a first direction. The box body 10 may include a first sidewall 11. The sidewall edge of the first sidewall 11 in the first direction defines a portion of the opening. The first sidewall 11 has a plurality of connecting holes 111 spaced apart in the width direction, the connecting holes 111 being close to the sidewall edge. It is understood that, in the thickness direction, a second sidewall opposite the first sidewall may have a plurality of connecting holes. The cover 20 covers the opening. Figure 2 The cover plate 20 may include an outer perimeter wall 30, which faces the first side wall 11 and is located outside the first side wall 11. The inner side of the outer perimeter wall 30 has a connecting protrusion 31 corresponding to the connecting hole 111. The connecting protrusion 31 passes through the connecting hole 111 to connect the cover plate 20 to the housing 10. For ease of description, in the accompanying drawings of this disclosure, Z indicates a first direction, Y indicates a width direction, and X indicates a thickness direction.

[0035] According to the storage box 100 provided in this disclosure, since the connecting hole 111 is located on the first side wall 11 and does not protrude beyond the edge of the side wall, the connecting hole 111 can be formed by simply machining a through hole on the first side wall 11 during the manufacturing process. This reduces the waste generated during manufacturing, improves material utilization, and lowers production costs. Furthermore, the storage box 100 with the above-described structure forms a reliable connection structure by cooperating with the connecting hole 111 on the first side wall 11 and the connecting protrusion 31 on the inner side of the outer perimeter wall 30 of the cover plate 20, thus connecting the cover plate 20 and the box body 10. This simplifies the assembly process, making the assembly and disassembly of the cover plate 20 and the box body 10 convenient and secure, effectively preventing the cover plate 20 from accidentally loosening. The outer perimeter wall 30 is located outside the first side wall 11, which effectively prevents dust or debris from entering the box body 10 through gaps.

[0036] refer to Figure 2 and Figure 3 The cover plate 20 may further include an inner wall 40. The inner wall 40 is opposite to and located inside the first side wall 11. Two guide protrusions 41 are provided on the surface of the inner wall 40 facing the first side wall 11. The two guide protrusions 41 are located on opposite sides of the connecting protrusion 31 in the width direction of the connecting protrusion 31. It should be noted that, in the accompanying drawings of this disclosure, the width direction is also the width direction of the connecting protrusion 31.

[0037] According to the above structure, by placing two guide protrusions 41 on both sides of the connecting protrusion 31 in the width direction, when the box body 10 and the cover plate 10 are assembled, the first side wall 11 is deformed by the pressure of the two guide protrusions 41 and the connecting protrusion 31, causing the first side wall located between the two guide protrusions 41 to be recessed towards the outer wall 30, so that the connecting protrusion 31 can pass smoothly and accurately through the connecting hole 111. After the connecting protrusion 31 passes through the connecting hole 111, the first side wall 11 returns to its original shape, realizing a stable connection between the box body 10 and the cover plate 20. After the box body 10 and the cover plate 20 are assembled, the guide protrusion 41 provides limiting support on the inner side of the first side wall 11, forming a clamping structure with the outer wall 30, effectively preventing the connecting protrusion 31 from loosening from the connecting hole 111 due to external forces during use, thereby ensuring a reliable connection between the connecting protrusion 31 and the connecting hole 111. When disassembling the box body 10 and the cover plate 20, pressing the first side wall near the connecting protrusion 31 causes the first side wall to deform again, which allows the connecting hole 111 to disengage from the connecting protrusion 31.

[0038] refer to Figure 2 The connecting protrusion 31 and the guiding protrusion 41 partially overlap in the thickness direction of the first sidewall 11. It should be noted that, in the accompanying drawings of this disclosure, the thickness direction is also the thickness direction of the first sidewall 11.

[0039] If the connecting protrusion 31 and the guiding protrusion 41 do not overlap in the thickness direction of the first sidewall 11, that is, if the connecting protrusion 31 and the guiding protrusion 41 are spaced apart in the thickness direction of the first sidewall 11, then the guiding protrusion 41 cannot make effective contact with the first sidewall 11 during the assembly of the box body 10 and the cover plate 20. This results in the first sidewall 11 not undergoing the required deformation under the action of the guiding protrusion 41, making it easy for the connecting protrusion 31 to have misalignment when passing through the connecting hole 111. After assembly, the guiding protrusion 41 also cannot provide effective limiting support. Therefore, the storage box 100 with the above structure can ensure that the guiding protrusion 41 can make effective contact with the first sidewall 11 during the assembly of the box body 10 and the cover plate 20, so that the first sidewall 11 can undergo sufficient deformation under the action of the guiding protrusion 41, thereby ensuring that the connecting protrusion 31 passes through the connecting hole 111 smoothly and accurately. In addition, after assembly is completed, the guide protrusion 41 can also provide limiting support on the inner side of the first side wall 11 to effectively prevent the connecting protrusion 31 from becoming loose from the connecting hole 111.

[0040] Further, refer to Figure 2The overlap dimension of the connecting protrusion 31 and the guiding protrusion 41 in the thickness direction of the first sidewall 11 is P, and the thickness of the first sidewall 11 is T, where 1.8 ≤ P / T ≤ 3.6. Preferably, 1.9 ≤ P / T ≤ 3.2. More preferably, 2.2 ≤ P / T ≤ 2.8. Alternatively, the ratio P / T can also be 2, 2.4, 2.6, 3, or 3.4.

[0041] If the ratio P / T is too small, meaning the overlap dimension P of the connecting protrusion 31 and the guiding protrusion 41 in the thickness direction of the first sidewall 11 is too small, then during the assembly of the box body 10 and the cover plate 20, the deformation of the first sidewall 11 under the action of the guiding protrusion 41 will be too small, making it easy for the connecting protrusion 31 to misalign when passing through the connecting hole 111. Furthermore, after assembly, the guiding protrusion 41 cannot provide an effective limiting effect, increasing the risk of the connecting protrusion 31 becoming loose from the connecting hole 111. If the ratio P / T is too large, meaning the overlap dimension P of the connecting protrusion 31 and the guiding protrusion 41 in the thickness direction of the first sidewall 11 is too large, then during the assembly of the box body 10 and the cover plate 20, the first sidewall 11 will experience excessive deformation under the action of the guiding protrusion 41. This could cause irreversible deformation or even breakage of the first sidewall 11, thus affecting the service life and structural integrity of the storage box 100. Therefore, within the reasonable range of 1.8≤P / T≤3.6, the first sidewall 11 can undergo moderate deformation under the action of the guide protrusion 41, so that the connecting protrusion 31 can pass smoothly and accurately through the connecting hole 111. The guide protrusion 41 can provide a reliable limiting effect and can also prevent the first sidewall 11 from cracking due to excessive deformation.

[0042] refer to Figure 3 Each guide protrusion 41 includes a ramp surface 411 and a parallel surface 412 that are connected sequentially along a first direction. The ramp surface 411 gradually slopes toward the outer wall as it approaches the parallel surface 412, and the parallel surface 412 is parallel to the first side wall 11.

[0043] According to the above structure, by employing a guide protrusion 41 with a ramp surface 411 and a parallel surface 412 connected in sequence, the first sidewall 11 can smoothly deform under the guidance of the ramp surface 411 during the assembly of the box body 10 and the cover plate 20. This effectively reduces assembly resistance and avoids structural damage to the first sidewall 11 caused by stress concentration due to instantaneous deformation. After assembly, the parallel surface 412 provides an effective limiting function, effectively preventing the connecting protrusion 31 from becoming loose from the connecting hole 111.

[0044] refer to Figure 2 The two ends of the ramp surface 411 are located on opposite sides of the connecting protrusion 31 in the first direction.

[0045] According to the above structure, during the assembly of the box body 10 and the cover plate 20, the first sidewall 11 makes contact with one end of the ramp surface 411 before contacting the connecting protrusion 31. Under the guidance of the ramp surface 411, the first sidewall 11 can undergo smooth deformation before contacting the connecting protrusion 31, which can further reduce assembly resistance, avoid structural damage to the first sidewall 11, and ensure that the entire assembly process is smoother and more natural.

[0046] refer to Figure 2 The connecting protrusion 31 gradually slopes in the first direction from its bottom end to its top end.

[0047] The connecting protrusion 31 has a structure that gradually slopes in a first direction from its bottom to its top. This allows the first sidewall 11 to smoothly enter between the outer wall 30 and the inner wall 40, reducing assembly resistance. It also allows the connecting protrusion 31 to mechanically interlock with the connecting hole 111 after passing through it. When subjected to vibration or external force, the connecting protrusion 31 will abut against the edge of the connecting hole 111, preventing it from detaching from the hole. This improves the reliability of the connection between the connecting protrusion 31 and the connecting hole 111, thereby enhancing the reliability of the connection between the housing 10 and the cover plate 20.

[0048] refer to Figure 2 The connecting protrusion 31 includes a first side surface 311 and a second side surface 312 along the first direction. The angle between the first side surface 311 and the outer perimeter wall 30 is smaller than the angle between the second side surface 312 and the outer perimeter wall 30.

[0049] According to the above structure, the angle between the first side 311 and the outer wall 30 is small, that is, the first side 311 is relatively steep. During the assembly of the box 10 and the cover plate 20, the obstruction of the first side 311 to the first side wall 11 can be reduced, thereby effectively reducing assembly resistance. At the same time, the angle between the second side 312 and the outer wall 30 is large, that is, the second side 312 is relatively gentle. This allows the connecting protrusion 31 to pass through the connecting hole 111 more smoothly when the edge of the connecting hole 111 contacts the second side 312 after passing the first side 311, avoiding jamming.

[0050] refer to Figure 4 The connecting protrusion 31 includes a constant-width section and a tapered section from its bottom to its top. The tapered section gradually decreases in width as it approaches the top.

[0051] Based on the above structure, the tapering section adopts a wedge-shaped structure with its width gradually decreasing towards the top. When the connecting protrusion passes through the connecting hole, the tapering structure of the tapering section can effectively guide the connecting protrusion, not only guiding it to precise alignment but also reducing assembly resistance and avoiding jamming caused by local interference during assembly, thus ensuring that the connecting protrusion passes smoothly through the connecting hole. Furthermore, the equal-width section can mate with the connecting hole to prevent the connecting protrusion from becoming loose.

[0052] refer to Figure 1 The two corners of the connecting hole 111 near the edge of the side wall are rounded.

[0053] Rounded corners at the two corners near the sidewall edge of the connection hole effectively prevent stress concentration at these corners. When the connection hole is under stress, the rounded corners, with their smooth transition contours, allow stress to be evenly distributed, reducing the risk of cracks or breakage caused by stress concentration at the two corners. This enhances the overall structural strength of the connection hole, improving the service life and reliability of the housing.

[0054] In another embodiment, reference Figure 1 The box body 10 has openings at both its end and bottom in a first direction. The cover 20 may include a first cover 21 and a second cover 22. By way of example only, the first cover 21 covers the top opening and has a viewing window to allow the user to observe the items stored inside the box. The second cover 22 covers the bottom opening and has multiple ventilation holes.

[0055] It should be noted that the elements described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0056] It should be understood that multiple components and / or parts can be provided by a single integrated component or part. Alternatively, a single integrated component or part can be divided into multiple separate components and / or parts. The use of the public designation "a" or "an" to describe a component or part does not imply the exclusion of other components or parts.

[0057] It should be understood that although terms such as “first” or “second” may be used in this disclosure to describe various elements (such as a first side and a second side), these elements are not defined by these terms, which are only used to distinguish one element from another.

[0058] The basic principles of this disclosure have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this disclosure are merely examples and not limitations, and should not be considered as essential features of each embodiment of this disclosure. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the scope of this disclosure to the necessity of employing the aforementioned specific details for implementation.

[0059] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A storage box, characterized in that, The storage box includes: A box body, the box body having an opening at one end in a first direction, the box body including a first sidewall, the first sidewall defining a portion of the opening at its edge in the first direction, the first sidewall having a connecting hole near the edge of the sidewall; and A cover plate is provided over the opening. The cover plate includes an outer wall that faces the first side wall and is located outside the first side wall. A connecting protrusion is provided on the inner side of the outer wall. The connecting protrusion passes through the connecting hole to connect the cover plate to the box body.

2. The storage box according to claim 1, characterized in that, The cover plate also includes an inner wall, which is opposite to and inside the first side wall. The inner wall has two guide protrusions on its surface facing the first side wall, and the two guide protrusions are located on opposite sides of the connecting protrusion in the width direction of the connecting protrusion.

3. The storage box according to claim 2, characterized in that, The connecting protrusion and the guiding protrusion partially overlap in the thickness direction of the first sidewall.

4. The storage box according to claim 3, characterized in that, The overlap dimension of the connecting protrusion and the guiding protrusion in the thickness direction of the first sidewall is P, and the thickness of the first sidewall is T, where 1.8 ≤ P / T ≤ 3.

6.

5. The storage box according to claim 2, characterized in that, Each guide protrusion includes a ramp surface and a parallel surface that are sequentially connected along the first direction. The ramp surface gradually slopes toward the outer wall as it approaches the parallel surface, and the parallel surface is parallel to the first side wall.

6. The storage box according to claim 5, characterized in that, The two ends of the ramp surface are located on opposite sides of the connecting protrusion in the first direction.

7. The storage box according to claim 1, characterized in that, The connecting protrusion gradually slopes toward the first direction from its bottom end to its top end.

8. The storage box according to claim 7, characterized in that, The connecting protrusion includes a first side and a second side in sequence along the first direction, and the angle between the first side and the outer wall is smaller than the angle between the second side and the outer wall.

9. The storage box according to claim 1, characterized in that, The connecting protrusion includes a constant-width section and a tapered section from its bottom end to its top end, with the tapered section gradually decreasing in width as it approaches the top end.

10. The storage box according to any one of claims 1 to 9, characterized in that, The two corners of the connecting hole near the edge of the side wall are rounded.

Images