Stackable storage box combination

Abstract

A stackable storage box combination, comprising at least two box bodies which are vertically stacked. A sidewall on one side of a first box body (10) and a sidewall on one side of a second box body (20) face each other in the vertical direction, and the two box bodies are locked in the vertical direction by means of a first locking assembly (L1). A top wall of the first box body (10) is provided with a downwardly recessed accommodating recess region (11), and a sidewall of the accommodating recess region (11) is provided with a slot (13) opening towards the inside of the accommodating recess region (11). A bottom wall of the second box body (20) is provided with at least one supporting column (21) which extends downward and is supported on a bottom wall of the accommodating recess region (11). A lower portion of the supporting column (21) adjacent to the location of the slot (13) is provided with a protrusion (22) which extends sideward and can be limited in the slot (13). When locked, the storage box combination has sufficient operation space, thereby saving labor and facilitating operation during the locking process thereof.

Description

Stackable storage box combination Technical Field

[0001] The present invention relates to the technical field of storage boxes, and in particular to a stackable storage box combination. Background Art

[0002] To facilitate the movement and transport of storage boxes, such as toolboxes and suitcases, they can be stacked on top of each other, with adjacent boxes interlocking to securely lock together. Several different approaches are currently available on the market to achieve secure interlocking between boxes. There are three main types of locking methods available: The first utilizes a single plastic latch that rotates to engage the lower protrusion of the upper box, achieving interlocking. The second involves moving the conventional two-stage latch on the front of the box to the side, locking the upper and lower boxes. The third involves changing the latch material from pure plastic to a combination of steel wire and plastic. However, these locking methods only interlock boxes with the same overall length and width, and not with boxes of different dimensions. As the types of tools that professional users carry grow in diversity, there is an urgent need for interlocking boxes of different sizes.

[0003] To this end, Chinese patent publication number CN216186917U (patent number ZL202122677703.6) discloses a storage box assembly, comprising a main storage box and a secondary storage box. The main storage box comprises a first housing, two symmetrically spaced second locking mechanisms, and at least one first locking mechanism positioned between the two second locking mechanisms. The at least one first locking mechanism is configured to be positioned opposite to a second locking mechanism to form a first locking gap in a first direction, and the two spaced second locking mechanisms are configured to form a second locking gap in the first direction. The main storage box and the at least one secondary storage box can be stacked and locked together. When a secondary storage box is stacked and locked on a main storage box, the first locking mechanism of the main storage box engages with the first locking position of the secondary storage box, and the second locking mechanism of the main storage box engages with the second locking position of the secondary storage box, thereby confining the secondary storage box in the first locking gap. This storage box set not only interlocks main storage boxes and auxiliary storage boxes of different sizes when stacked together by utilizing the cooperation of the first and second locking mechanisms, but also interlocks main storage boxes of the same size when stacked together by utilizing the cooperation of multiple second locking mechanisms. This greatly expands the convenience and versatility of the storage box and storage box set, and greatly enhances the user experience.

[0004] However, the above-mentioned storage box combination still has certain shortcomings. The first locking mechanism on the main storage box adopts a first hook that is flipped and arranged on the first end face of the main storage box, while the first locking position of the auxiliary storage box adopts a rib located on a long side edge of the fourth end face of the auxiliary storage box. The rib as the first locking position is tightly attached to the fourth end face of the auxiliary storage box. When the auxiliary storage box is placed on the main storage box, the operating space for the rib of the auxiliary storage box to be inserted under the first hook is relatively small. This makes it difficult for the user to insert the rib under the first hook smoothly, which reduces the user's experience.

[0005] Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a stackable storage box combination in response to the current status of the existing technology, wherein the upper and lower stacked boxes of the storage box combination have sufficient operating space when locked, thereby making the locking process more labor-saving and easy to operate.

[0007] 14. The stackable storage box of claim 13, wherein the at least one storage box is stacked such that the at least one storage box is stacked on top of the at least one storage box. The at least one storage box is stacked such that the at least one storage box is stacked on top of the at least one storage box. The at least one storage box is stacked such that the at least one storage box is stacked on top of the at least one storage box.

[0008] Generally, the second box body needs to be tilted at a certain angle before the protrusion of the second box body can be conveniently inserted into the slot of the first box body. In order to make the process of inserting the protrusion of the second box body into the slot smoother, a first guide slope is constructed on the bottom wall of the protrusion of the support column, which gradually tilts upward from the position connected to the main body of the support column to the position away from the main body of the support column.

[0009] In order to prevent the two boxes stacked up and down from sliding or shaking in the horizontal direction, there are multiple support columns, each of which is against the side wall of the storage recess to limit the horizontal movement of the second box relative to the first box.

[0010] In order to smoothly install the various support columns of the second box body into the storage recessed area at the top of the first box body, and ensure that each support column can be installed in the storage recessed area and can be against the side wall of the storage recessed area, the storage recessed area of ​​the first box body has a first side wall and a second side wall relative to each other, and the slot is provided on the first side wall of the storage recessed area. At least the position corresponding to the support column on the second side wall is constructed with a second guide slope that gradually inclines from bottom to top toward the side away from the first side wall.

[0011] In order to further ensure that the first box body and the second box body can be securely limited in the horizontal direction, the storage recessed area is a square area, and there are four support columns, which are respectively located at the four corners of the storage recessed area.

[0012] In order to reasonably utilize the space above the first box body, two or more second boxes can be provided. Preferably, there are two second boxes, which are arranged in sequence in the horizontal direction above the first box body, and the storage recessed areas also have two corresponding ones arranged in sequence in the horizontal direction.

[0013] The first lock component can adopt a lock component in the prior art that realizes locking and unlocking by flipping or linear sliding of the lock component. Preferably, the first lock component includes a lock joint portion provided on the side wall of the second box body and a lock component provided on the side wall of the first box body. The lock component is rotatably connected to the side wall of the first box body in a manner that it can be deflected relative to the first box body approximately around a horizontally extending rotation axis, and can at least deflect between a first unlocked position disengaged from the lock joint portion on the second box body and a second locked position engaged with the lock joint portion provided on the second box body.

[0014] Considering that after the second box body is locked and limited with the first box body by the second locking assembly, the other side of the second box body (that is, the side where the first locking assembly is located) will be slightly tilted, so when using a conventional locking assembly to lock the second box body, the user needs to forcefully press the second box body down completely to achieve locking. In order to solve this problem, the locking member is further constrained to the side wall of the first box body in a manner that it can move up and down roughly along the side wall of the first box body;

[0015] The first locking assembly also includes an elastic member provided on the first box body and acting on the locking member, and the elastic member is configured to: allow the locking member to move upward along the side wall of the first box body under the action of external force during the deflection of the locking member relative to the first box body, and allow the locking member to reset downward at least when it is deflected to the second locked position after the external force is removed, thereby unlocking or locking the locking member on the locking joint on the second box body.

[0016] Since the latch on the first box body can also generate a certain amount of vertical displacement margin along the side wall of the storage box while rotating, the user can complete the locking and unlocking operation of the latch by applying a certain force in the up and down directions to the latch during the deflection process. This force application method does not require the user to apply a large force in the lateral direction, which is more in line with the user's operating habits, and effectively reduces the wear problem of the latch on the latch joint of the second box body caused by friction, and avoids the occurrence of locking failure due to deformation of the storage box material. Therefore, it is no longer necessary to require the storage box to have sufficient strength in the corresponding parts (such as the latch joint), making it possible to further reduce the material cost of the storage box. On the other hand, the provision of the elastic member can also enable the latch to return downward and buckle on the latch joint when not subject to external force, making the locking between the two stacked storage boxes more stable and reliable.

[0017] In order to adapt to the locking member connected to the first box body in a deflection movement manner, the locking joint on the second box body is a protruding structure protruding outward relative to the side wall of the second box body. The protruding structure is vertically aligned with the locking member to allow the locking member on the first box body to engage with the locking joint on the second box body when deflected to the second locked position, thereby locking the first box body and the second box body together.

[0018] In order to ensure the connection strength between the raised structure and the main body of the second box body, the raised structure is located at the lower part of the second box body and connected to the bottom of the second box body. The convex edge portion on the top wall of the first box body corresponding to the convex edge portion located outside the storage recessed area has a makeshift groove for accommodating the raised structure.

[0019] Compared with the prior art, the advantages of the present invention are as follows: the protrusion for locking with the slot on the top of the first box body below is arranged on the support column extending downward from the bottom of the second box body, that is, there is a certain distance between the position of the protrusion and the main body of the second box body in the up and down directions, so that the user has sufficient operating space when inserting the protrusion of the second box body into the slot of the first box body, and it is also convenient for the user to check whether the protrusion and the slot are aligned, thereby improving the locking efficiency between the upper and lower boxes and enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] FIG1 is a schematic diagram of the three-dimensional structure of a storage box assembly according to an embodiment of the present invention;

[0021] FIG2 is a top view of the storage box assembly according to an embodiment of the present invention;

[0022] FIG3 is a schematic diagram of the three-dimensional structure of a storage box assembly in which one of the second boxes is in a separated state according to an embodiment of the present invention;

[0023] FIG4 is a schematic diagram of the three-dimensional structure of the second box body according to an embodiment of the present invention;

[0024] FIG5 is a schematic diagram of the three-dimensional structure of the first box body according to an embodiment of the present invention;

[0025] FIG6 is a cross-sectional view of the storage box assembly according to the embodiment of the present invention taken along the AA direction in FIG2 ;

[0026] FIG7 is a cross-sectional view of the second housing according to an embodiment of the present invention taken along the AA direction in FIG2 ;

[0027] FIG8 is an exploded view of the installation structure of the locking member of the first locking assembly according to an embodiment of the present invention;

[0028] FIG9 is a schematic structural diagram of the first box body in FIG5 with the cover plate omitted;

[0029] 10 is a schematic diagram of the stacking and locking process of the second box and the first box according to an embodiment of the present invention;

[0030] FIG. 11 is a schematic diagram of the three-dimensional structure of another embodiment of the storage box assembly according to the embodiment of the present invention. DETAILED DESCRIPTION

[0031] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0032] In the present specification and claims, directional terms such as "front," "back," "up," "down," "left," "right," "side," "top," and "bottom" are used to describe various exemplary structural parts and components of the present invention. However, these terms are used herein for convenience of description only and are based on the exemplary orientations shown in the accompanying drawings. Because the embodiments disclosed herein can be arranged in various orientations, these directional terms are intended for illustrative purposes only and should not be construed as limiting. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0033] Referring to Figures 1-10 , a preferred embodiment of the stackable storage box assembly of the present invention is shown. At least two storage boxes stacked one above the other can be locked together via a locking mechanism to form a storage box assembly. The lower storage box is designated as a first box 10, and the upper storage box is designated as a second box 20. As shown in Figure 1 , the overall dimensions of the second box 20 are smaller than those of the first box 10. Specifically, the width of the first box 10 is comparable to the length of the second box 20, while the sum of the widths of the two second boxes 20 is slightly smaller than the length of the first box 10. Consequently, two second boxes 20 can be placed side by side on top of the first box 10.

[0034] The two stacked storage boxes are locked together using a locking mechanism. This mechanism includes a first locking assembly L1 and a second locking assembly L2, spaced apart horizontally (e.g., left and right in Figure 1). The left side wall of the first box 10 and the left side wall of the second box 20 face each other vertically, and the first locking assembly L1 locks the two vertically together.

[0035] 8 and 9 , the first latch assembly L1 includes a latch member 31, an elastic member 33, and a latch engagement portion 32. The elastic member 33 can be, for example, a spring or a spring. During the deflection of the latch member 31, the elastic member 33 allows the latch member 31 to move upward under the action of an external force, and allows the latch member 31 to return downward after deflecting to at least the second locked position after the external force is removed, thereby locking or unlocking the latch member 31 at the latch engagement portion 32 of the second housing 20.

[0036] The locking member 31 is rotatably connected to the upper portion of the side wall of the first housing 10 so as to be able to deflect relative to the first housing 10 about a generally horizontally extending rotation axis M. In a preferred embodiment, the locking member 31 is generally U-shaped, specifically comprising two opposing vertical rod portions 312 and a horizontal rod portion 311 connecting the two vertical rod portions 312. The ends of the two vertical rod portions 312 (i.e., the free ends of the locking member 31) have pin portions 313 extending toward each other (of course, they can also extend away from each other) and located on the same straight line. The two pin portions 313 of the locking member 31 are pivotally connected to the side wall of the first housing 10. The two pin portions 313 of the locking member 31 constitute the pivot axis of the locking member 31 of this embodiment.

[0037] The side wall of the first housing 10 has an outwardly protruding boss 15, which serves as a connection seat for connecting the pivot shaft of the locking member 31. The boss 15 has an open slot 150 extending vertically, and the open slot 150 is covered with a cover plate 16 that can be removed from the boss 15. The cover plate 16 is connected to the boss 15 by screws. The open slot 150 of the boss 15 and the cover plate 16 together define a limit slide extending vertically. The boss 15 of the cover body also has a movable opening 151 that extends laterally through the limit slide. The movable opening 151 allows the pivot shaft of the locking member 31 to pass through the limit slide and connect to the slider 34 correspondingly provided in the limit slide.

[0038] The slider 34 is constrained in the limiting slideway, allowing it to slide up and down. The slider 34 has a transverse positioning hole 341 extending therethrough, which is aligned with the movable opening 151 on the boss 15. The pin 313 of the locking member 31 can pass through the movable opening 151 on the boss 15 and fit into the positioning hole 341 of the slider 34. When the pin 313 of the locking member 31 is properly seated in the positioning hole 341 of the slider 34, the locking member 31 can freely rotate relative to the slider 34 about its pin 313.

[0039] The top of the slider 34 has an upwardly extending positioning column 342. The elastic member 33 arranged in the boss 15 limiting slideway adopts a compression spring, one end of which is sleeved on the positioning column 342 of the slider 34, and the other end is against the inner wall of the limiting slideway.

[0040] A locking portion 32 is provided at the lower portion of the left side wall of the second housing 20 for press-fitting with the crossbar 311 of the locking member 31 on the side wall of the first housing 10. The locking portion 32 is a raised structure protruding outward from the side wall of the second housing 20. The top edge of the raised structure has an upwardly protruding stopper 320, giving the raised structure an overall hook shape.

[0041] The second housing 20 has two locking engagement portions 32 on its left side wall. These two locking engagement portions 32 are substantially identical in structure and are spaced apart along the front-to-back direction of the side wall of the second housing 20. When the first and second housings 10, 20 are stacked one on top of the other, the two locking engagement portions 32 on the side wall of the second housing 20 are vertically aligned with the locking member 31 on the side wall of the first housing 10. The locking member 31 is capable of deflecting in the direction indicated by the double-arrow arc S in FIG5 between a first unlocked position and a second locked position. In the first unlocked position, the locking member 31 on the first housing 10 is disengaged from the locking engagement portions 32 on the second housing 20, naturally hanging from the side wall of the first housing 10. In the second locked position, the locking member 31 on the side wall of the first housing 10 engages with the two locking engagement portions 32 on the side wall of the second housing 20.

[0042] When the upper and lower storage boxes need to be locked using the first locking assembly L1, the locking member 31 on the side wall of the lower first box body 10 can be deflected upward about the pivot axis to the second locked position. At this time, the crossbar portion 311 of the locking member 31 is simultaneously pressed against the two locking engagement portions 32 on the side wall of the upper second box body 20 to achieve locking. When the upper and lower storage boxes need to be unlocked, the user can pull the locking member 31 on the first box body 10 upward and deflect it downward along the pivot axis. The locking member 31 disengages from the two locking engagement portions 32 and deflects to the first unlocked position.

[0043] In this embodiment, the raised structure serving as the locking engagement portion 32 on the second housing 20 is located at the lower portion of the side wall of the second housing 20 and abuts the bottom of the second housing 20, thereby ensuring the connection strength between the raised structure and the main body of the second housing 20. As shown in FIG4 , the locking engagement portion 32 also partially protrudes downward relative to the bottom wall of the second housing 20. To ensure the smooth placement of the second housing 20 on the top wall of the first housing 10, a recess 14 is provided on the top wall of the first housing 10, opposite the locking engagement portion 32, for receiving the raised structure.

[0044] The top wall of the first housing 10 has a recessed storage area 11. The aforementioned clearance groove 14 is correspondingly provided on a convex edge 110 on the top wall of the first housing 10, located outside the storage area 11. To accommodate the two second housings 20 to be placed, two storage areas 11 are provided, arranged in sequence along the left-right direction. Each storage area 11 is square in shape. To facilitate processing and save materials, the convex edge on the top wall of the first housing 10, located between the two storage areas 11, is missing in the middle portion in the front-to-back direction to form a notch 113, thus connecting the two storage areas 11. The bottom wall of the second housing 20 has four support columns 21 extending downward and supported on the bottom wall of the storage area 11. These four support columns 21 are located at the four corners of the storage area 11 and abut against the side walls of the storage area 11. This prevents the second housing 20 from sliding or shaking horizontally relative to the first housing 10. The opposite side walls of the storage recess 11 of the first box body 10 in the left and right directions are respectively recorded as the first side wall 111 and the second side wall 112, wherein the second side wall 112 is arranged adjacent to the left or right wall of the first box body 10, and the first side wall 111 is roughly located in the middle area of ​​the first box body 10 in the left and right directions. The first side wall 111 of the storage recess 11 is provided with a slot 13 opening toward the storage recess 11, wherein there are two slots 13, which are respectively located at the front and rear ends of the first side wall 111 (that is, the two corner areas of the storage recess 11). The support column 21 of the second box body 20 is adjacent to the position of the two slots 13, and its lower part has a protrusion 22 extending toward the side and capable of being limited in the slot 13. The above-mentioned protrusion 22 and slot 13 together constitute the second locking component L2 of this embodiment.

[0045] Since the protrusion 22 is arranged on the support column 21 extending downward from the bottom of the second box body 20, that is, there is a certain distance between the position of the protrusion 22 and the main body of the second box body 20 in the vertical direction, the user has sufficient operating space when inserting the protrusion 22 of the second box body 20 into the slot 13 of the first box body 10, and it is also convenient for the user to check whether the protrusion 22 is aligned with the slot 13, thereby improving the locking efficiency between the upper and lower boxes and enhancing the user experience.

[0046] Generally, as shown in Figure 10, the second box body 20 needs to be tilted at a certain angle before the protrusion 22 of the second box body 20 can be conveniently inserted into the slot 13 of the first box body 10. In order to make the process of inserting the protrusion 22 of the second box body 20 into the slot 13 smoother and avoid interference problems, the bottom wall of the protrusion 22 of the support column 21 is constructed with a first guide slope 220, and the first guide slope 220 gradually tilts upward from the position connected to the main body of the support column 21 toward a position away from the main body of the support column 21.

[0047] A second guide slope 1120 is constructed on the second side wall 112 of the storage recessed area 11 of the first box body 10, which is gradually inclined from bottom to top toward the side away from the first side wall 111. Since the second side wall 112 is inclined, after the protrusion 22 on one side of the second box body 20 is inserted into the slot 13 of the first box body 10, the user presses down the other side of the second box body 20. Under the guidance of the second guide slope 1120, the support column 21 at the bottom of the second box body 20 can smoothly enter the storage recessed area 11 and abut against the second side wall 112 of the first box body 10, thereby ensuring the reliability of the installation of the second box body 20.

[0048] On the other hand, considering that after the second box body 20 is locked to a limited position with the first box body 10 through the second lock component L2, the other side of the second box body 20 (that is, the side where the first lock component L1 is located) may be slightly tilted or not pressed down in place, so when using a conventional lock component for locking, the user needs to more laboriously press the second box body 20 completely down in place before it can be locked. In this embodiment, the lock component 31 with a movable margin in the vertical direction is used to better solve this problem. When the user rotates the lock component 31, the lock component 31 can be pulled upward to lock the lock component 31. The lock member 31 is locked and unlocked by applying a certain force in the vertical direction to the lock member 31 during the deflection process. This force application method does not require the user to apply a large force in the lateral direction, which is more in line with the user's operating habits. It also effectively reduces the wear of the lock member 31 on the storage box due to friction, avoids the occurrence of locking failure due to deformation of the storage box material, and eliminates the need for the storage box to have sufficient strength in the corresponding parts, thereby further reducing the material cost of the storage box. When the user releases the lock member 31, the lock member 31 is pressed against the lock engagement portion 32 under the elastic force of the elastic member 33, making the locking of the upper and lower storage boxes more stable and secure.

[0049] FIG11 shows another embodiment of a storage box combination. A plurality of third boxes 40 are stacked below the first box 10 of the storage box combination shown in FIG1 . The left-right dimensions and front-to-back dimensions of the third boxes 40 are consistent with those of the first box 10, while the height dimensions may be consistent with or different from those of the first box 10. The first box 10 and the third box 40, as well as two third boxes 40 adjacent to each other, can be locked together by the first locking assembly L1 described above. Specifically, the first locking assembly L1 has two groups arranged on the left and right. In the first locking assembly L1 used to lock the first box 10 and the third box 40, the locking member 31 is rotatably mounted on the upper portion of the side wall of the third box 40, while the locking engagement portion 32 is located on the lower portion of the side wall of the first box 10. In the first locking assembly L1, which is used to lock two adjacent third boxes 40, the locking member 31 is rotatably mounted on the upper sidewall of the lower third box 40, while the locking engagement portion 32 is located on the lower sidewall of the upper third box 40. A roller 50 is also provided on the bottom of the lowermost third box 40.

Claims

1. A stackable storage box combination, comprising at least two boxes stacked up and down, wherein the box located at the bottom of the two adjacent boxes is recorded as a first box (10), and the box located at the top is recorded as a second box (20), and the first box (10) and the second box (20) are locked together by a locking mechanism that can be unlocked; Features: The locking mechanism comprises a first locking assembly (L1) and a second locking assembly (L2); a side wall of the first box body (10) and a side wall of the second box body (20) are opposite to each other in the vertical direction, and the two are locked in the vertical direction by the first locking assembly (L1); The top wall of the first box body (10) is provided with a concave storage recessed area (11), and the side wall of the storage recessed area (11) is provided with a slot (13) opening toward the storage recessed area (11). The bottom wall of the second box body (20) is provided with at least one support column (21) extending downward and supported on the bottom wall of the storage recessed area (11), and the lower part of the support column (21) adjacent to the position of the slot (13) is provided with a protrusion (22) extending toward the side and capable of being limited in the slot (13), and the protrusion (22) and the slot (13) together constitute the second locking assembly (L2).

2. The storage box assembly according to claim 1, characterized in that: A first guiding slope (220) is constructed on the bottom wall of the protrusion (22) of the support column (21) and gradually slopes upward from a position connected to the main body of the support column (21) to a position away from the main body of the support column (21).

3. The storage box assembly according to claim 1, characterized in that: There are a plurality of support columns (21), and each of the support columns (21) abuts against a side wall of the storage recessed area (11) to limit the horizontal movement of the second box body (20) relative to the first box body (10).

4. The storage box assembly according to claim 3, characterized in that: The storage recessed area (11) of the first box body (10) has a first side wall (111) and a second side wall (112) opposite to each other; the slot (13) is arranged on the first side wall (111) of the storage recessed area (11); and a second guiding inclined surface (1120) is constructed at least at a position corresponding to the support column (21) on the second side wall (112) and gradually tilts from bottom to top toward a side away from the first side wall (111).

5. The storage box assembly according to claim 3, characterized in that: The storage recessed area (11) is a square area, and there are four support columns (21). The four support columns (21) are respectively located at the four corners of the storage recessed area (11).

6. The storage box assembly according to claim 1, characterized in that: There are two second boxes (20), which are arranged in sequence in the horizontal direction above the first box (10), and the storage recessed areas (11) also have two corresponding ones arranged in sequence in the horizontal direction.

7. The storage box assembly according to any one of claims 1 to 6, characterized in that: The first locking assembly (L1) comprises a locking engaging portion (32) provided on the side wall of the second box body (20) and a locking member (31) provided on the side wall of the first box body (10); the locking member (31) is rotatably connected to the side wall of the first box body (10) so as to be able to deflect relative to the first box body (10) about a rotation axis extending substantially horizontally, and is at least able to deflect between a first unlocking position disengaged from the locking engaging portion (32) on the second box body (20) and a second locking position engaged with the locking engaging portion (32) provided on the second box body (20).

8. The storage box assembly according to claim 7, characterized in that: The locking member (31) is also constrained on the side wall of the first box body (10) in a manner that it can move up and down along the side wall of the first box body (10); The first locking assembly (L1) further comprises an elastic member (33) disposed on the first housing (10) and acting on the locking member (31), wherein the elastic member (33) is configured to allow the locking member (31) to move upward along the side wall of the first housing (10) under the action of an external force during the deflection of the locking member (31) relative to the first housing (10), and to allow the locking member (31) to return downward at least when deflected to a second locked position after the external force is removed, thereby unlocking or locking the locking member (31) on the locking engaging portion (32) on the second housing (20).

9. The storage box assembly according to claim 7, characterized in that: The locking engaging portion (32) on the second box body (20) is a protruding structure protruding outwardly relative to the side wall surface of the second box body (20), and the protruding structure is vertically aligned with the locking member (31) to allow the locking member (31) on the first box body (10) to engage with the locking engaging portion (32) on the second box body (20) when deflected to the second locked position, thereby locking the first box body (10) and the second box body (20) together.

10. The storage box assembly according to claim 9, characterized in that: The protruding structure is located at the lower part of the second box body (20) and is connected to the bottom of the second box body (20); a convex edge portion (110) on the top wall of the first box body (10) corresponding to the convex edge portion (110) located outside the receiving recessed area (11) has a recessed groove (14) for accommodating the protruding structure.

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