Storage box capable of being stacked stably and using method of sliding lock mechanism of storage box

Abstract

The invention discloses a storage box capable of being stacked stably and a using method of a sliding lock mechanism of the storage box. A box body of the storage box comprises a bottom shell and a hinged box cover, a locking mechanism is formed by a sliding lock mechanism and a hook lock mechanism which are located on the two sides of the box body, and stacking locking of the box body is achieved. In the sliding lock mechanism, a lock catch piece can slide left and right to switch the connection state with a buckling part, an elastic reset piece provides unlocking elastic force, and an elastic pressing part and a limiting part of an elastic switching cover are matched to control the locking state of the lock catch piece. And the hook lock mechanism is hooked with the hooked part groove through the hook part to enhance the connection. In the using process, the box body corner protruding block and the alignment step are positioned and stacked, the lock catch piece is pushed to be connected with the locking supporting foot and the locking step, and meanwhile the hook part and the hooked part are hooked to complete locking; when the elastic pressing part is pressed, unlocking is achieved under the action of the elastic reset piece. Compared with a traditional single-side locking or interlocking structure, the storage box has the advantages of being stable in stacking, easy and convenient to operate, reasonable in structure and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of storage boxes, and in particular to a storage box that can be stably stacked and a method for using a sliding lock mechanism thereof. Background Art

[0002] In the field of tool storage, storage boxes are widely used. For example, bit boxes used to store various tools such as bit bits not only need to have good storage functions, but also require a stable structure when stacked to avoid tipping or slipping during transportation and storage, thereby ensuring the safety of tools and orderly storage.

[0003] Existing storage boxes have obvious defects in stacking stability. Some storage boxes adopt a one-sided locking method. This design makes it easy for the storage boxes to twist after being stacked due to uneven force, making it difficult to maintain a stable stacking state, which not only reduces the utilization efficiency of the storage space, but also increases the risk of tool damage; and the storage boxes with interlocking structures, although they enhance stability to a certain extent, due to the cumbersome operation steps, users need to spend more time and energy to lock and unlock during use, resulting in a poor user experience. Therefore, it is urgent to develop a storage box that can overcome the above problems, achieve stable stacking and is easy to operate. Summary of the invention

[0004] In view of the deficiencies in the background technology, the present invention provides a stably stackable storage box and a method for using a sliding lock mechanism thereof.

[0005] The technical solution adopted by the present invention is: a storage box that can be stably stacked, comprising a box body that can be stacked, the box body comprising a bottom shell and a box cover hinged to the bottom shell, and also comprising a locking mechanism for locking the two stacked box bodies, the locking mechanism comprising a sliding lock mechanism located on one side of the box body and a hook lock mechanism located on the other side of the box body; The sliding lock mechanism includes a buckling portion, an elastic reset member, a locking member and an elastic switching cover. The locking member is slidably arranged on the box body in a left-right moving manner, and has the following two states as its moving position changes: A locked state is achieved between two stacked boxes when connected to the buckle part, and an unlocked state is achieved between two stacked boxes when separated from the buckle part; The elastic return member provides an unlocking elastic force for the lock member to slide from the locked state to the unlocked state; The elastic switch cover is provided with an elastic pressing portion and a limiting portion, the limiting portion cooperates with the elastic portion on the above-mentioned locking member, and the elastic pressing portion is pressed to act on the elastic portion, so that the elastic portion is separated from the limiting portion to release the limiting effect between the limiting portion and the elastic portion; The elastic pressing part is released to reset the elastic part, and when the elastic part abuts against the limiting part, the locking member is kept in the locked state; The hook lock mechanism comprises a hook portion and a hooked portion, and the hooked portion is provided with a groove for hooking with the hook portion.

[0006] Furthermore, a groove for installing a sliding lock mechanism is provided on the side surface of the bottom shell away from the hinged side, a slide rail for slidingly cooperating with the locking member is provided in the groove, a handle and a slide groove for slidingly cooperating with the slide rail are provided on the locking member, the elastic switching cover is detachably connected to the groove, and a first make way groove for making way for the elastic pressing part and a second make way groove for extending the handle are provided on the elastic switching cover.

[0007] Furthermore, a spring column is provided on one side of the locking member, one end of the elastic reset member is sleeved on the spring column, and the other end is abutted against the side surface of the groove.

[0008] Furthermore, the elastic portion is provided with a limiting boss which limits the limiting portion, a first inclined surface is provided on one side of the limiting boss, and the limiting portion is provided with a second inclined surface which matches the first inclined surface.

[0009] Furthermore, connecting grooves are arranged on both sides of the groove, elastic plates are arranged on both sides of the elastic switching cover, and connecting steps connected to the connecting grooves are arranged on the elastic plates.

[0010] Furthermore, a pressing indication mark is provided on the elastic pressing portion, and a locking direction mark is provided on the surface of the elastic switching cover.

[0011] Furthermore, a snap-fit groove is provided on the side surface of the bottom shell away from the hinged side, a box cover snap-fitting piece is rotatably connected in the snap-fit groove, the groove is located in the snap-fit groove below the box cover snap-fitting piece, a locking foot is extended from the locking foot to the bottom of the bottom shell, the snap-fitting part is located on the surface of the box cover away from the hinged side, and a locking step connected to the locking foot is provided on the snap-fitting part.

[0012] Furthermore, the hook portion is located on the surface of the bottom shell close to the hinge side of the bottom shell, and the hooked portion is located on the surface of the box cover close to the hinge side of the box cover.

[0013] Furthermore, the four corner surfaces of the bottom shell are provided with protrusions, the protrusions are provided with alignment grooves, and the four corner surfaces of the box cover are provided with alignment steps for aligning and matching with the protrusions.

[0014] The present application also provides a method for using a sliding lock mechanism, including a locking operation and an unlocking operation: Locking operation: S1. Stack two storage boxes up and down, and make the protrusions at the corners of the bottom shell of the upper storage box fit and limit the steps at the corners of the cover of the lower storage box to achieve stacking of the storage boxes; S2, push the lock member of the slide lock mechanism to connect the locking leg of the lock member with the locking step of the buckling part of the upper storage box cover, so that the slide lock mechanism locks the two box bodies, and at the same time, hook the hook part of the upper storage box bottom shell near the hinged side and the groove of the hooked part of the lower storage box cover near the hinged side to complete the connection of the hook lock mechanism; Unlock operation: S1. Press the pressing indication mark area of the elastic pressing part, press the elastic pressing part to act on the elastic part, so that the elastic part is deformed and breaks away from the restriction of the limiting part. Under the elastic force of the elastic reset part, the locking part slides to the unlocking state side, so that the locking leg is separated from the locking step of the upper storage box cover buckling part.

[0015] The beneficial effects of the present invention are: 1. Improve stacking stability: The sliding lock mechanism and hook lock mechanism on both sides of the box body are used in combination. Compared with the traditional single-sided locking storage box, the double-sided locking can achieve multi-directional stable constraints, so that the two stacked boxes are evenly stressed, which greatly avoids the occurrence of torsion, effectively ensures the stability of the stacked storage boxes, improves the utilization efficiency of the storage space, and also reduces the risk of damage to tools due to tipping or sliding during the storage process.

[0016] 2. Easy to operate: By setting an elastic switching cover in the sliding lock mechanism, the user only needs to press the elastic pressing part to easily release the limit. At the same time, the lock piece slides automatically under the elastic force of the reset elastic piece to complete the unlocking. When locking, it only needs to push the lock piece to overcome the resistance (such as the elastic force of the reset elastic piece) to complete the locking; the hook part of the hook lock mechanism and the groove of the hooked part are simple and direct to cooperate, and the operation steps are concise and clear. Compared with the complex operation of the interlocking structure, the locking and unlocking process of this storage box is more convenient and efficient, which greatly improves the user experience.

[0017] 3. Simple and reasonable structure: The various components of the locking mechanism cooperate closely with each other, which not only ensures the stability and reliability of the storage box during normal use, but also lowers the user's usage threshold by simplifying the operation. It is both practical and economical, and has broad application prospects and promotion value in the field of tool storage.

[0018] In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages.

[0019] The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is the front schematic view of the present invention.

[0021] Figure 2 This is the back schematic view of the present invention.

[0022] Figure 3 This is the side schematic view of the present invention.

[0023] Figure 4 is Figure 3 the partial cross-sectional schematic view at A-A in

[0024] Figure 5 the partial exploded schematic view of the sliding lock mechanism.

[0025] Figure 6 the schematic view of two box bodies stacked.

[0026] Figure 7 the elastic switching cover of the locking part.

[0027] Figure 8 the structural schematic view of the elastic switching cover.

[0028] Figures 1 - 8 In the figure: 1. Box body; 2. Bottom shell; 3. Box cover; 4. Sliding lock mechanism; 5. Hook lock mechanism; 6. Latching part; 7. Elastic reset part; 8. Locking part; 9. Elastic switching cover; 10. Elastic pressing part; 11. Limiting part; 12. Elastic part; 13. Hook part; 14. Hooked part; 15. Groove; 16. Groove; 17. Slide rail; 18. Handle; 19. Slide groove; 20. First relief groove; 21. Second relief groove; 22. Spring post; 24. Limiting boss; 25. First inclined surface; 26. Second inclined surface; 27. Connecting groove; 28. Elastic plate; 29. Connecting step; 30. Pressing indication mark; 31. Locking direction mark; 32. Latching groove; 33. Box cover latching part; 34. Locking support leg; 35. Locking step; 36. Protrusion; 37. Alignment groove; 38. Alignment step. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] The invention provides a storage box which can be stably stacked.

[0032] In this embodiment, refer to Figures 1 - 8 The stably stackable storage box comprises a box body 1 that can be stacked, the box body 1 comprises a bottom shell 2 and a box cover 3 hinged to the bottom shell 2, and also comprises a locking mechanism 4 for locking the two stacked box bodies, the locking mechanism 5 comprises a sliding lock mechanism located on one side of the box body and a hook lock mechanism located on the other side of the box body; The sliding lock mechanism 5 includes a buckling portion 6, an elastic reset member 7, a locking member 8 and an elastic switching cover 9. The locking member 8 is slidably arranged on the box body 1 in a manner of moving left and right, and has the following two states as its moving position changes: A locked state is achieved between two stacked boxes when connected to the buckle part, and an unlocked state is achieved between two stacked boxes when separated from the buckle part; The elastic return member 7 provides an unlocking elastic force for the lock member to slide from the locked state to the unlocked state; The elastic switch cover has an elastic pressing portion 10 and a limiting portion 11, and the limiting portion 11 cooperates with the elastic portion 12 on the above-mentioned lock member, and the elastic pressing portion is pressed to act on the elastic portion, so that the elastic portion and the limiting portion are separated to release the limiting effect between the limiting portion and the elastic portion; The elastic pressing part is released to reset the elastic part, and when the elastic part abuts against the limiting part, the locking member is kept in the locked state; The hook lock mechanism comprises a hook portion 13 and a hooked portion 14 , and the hooked portion 14 is provided with a groove 15 for hooking with the hook portion.

[0033] In the above technical solution, the locking mechanism is formed by arranging the sliding lock mechanism and the hook lock mechanism on both sides of the box body to realize the locking of the two stacked boxes. In the sliding lock mechanism, the lock member can slide left and right, and switch the locked and unlocked states of the box body by connecting and separating with the buckling part; the elastic reset member provides elastic force for unlocking the lock member; the elastic pressing part and the limiting part of the elastic switching cover cooperate to control the locking state of the lock member. The hook lock mechanism further strengthens the connection between the box bodies by hooking the hook part and the groove of the hooked part.

[0034] Compared with the traditional single-sided locking storage box, the double-sided locking structure effectively avoids the torsion problem during stacking, greatly improving the stacking stability of the storage box. At the same time, compared with the complex interlocking structure, this locking mechanism is more convenient to operate, reducing the user's difficulty of use, improving the use efficiency, and can reliably lock and unlock between the boxes, ensuring the stability and safety of the storage boxes when stacked.

[0035] Specifically, a groove 16 for installing the sliding lock mechanism is provided on the side of the bottom shell away from the hinge side. A slide rail 17 for sliding cooperation with the locking part is arranged in the groove 16. A handle 18 and a chute 19 for sliding cooperation with the slide rail 17 are arranged on the locking part. The elastic switching cover is detachably connected to the groove 16. A first relief groove 20 for making way for the elastic pressing part and a second relief groove 21 for the handle to extend out are arranged on the elastic switching cover.

[0036] In this embodiment, a groove is provided on the side of the bottom shell away from the hinge side to install the sliding lock mechanism. The slide rail in the groove is in sliding cooperation with the locking part, enabling the locking part to slide smoothly and at the same time playing a role in limiting the sliding track. The handle on the locking part is convenient for operation. The elastic switching cover is detachably connected to the groove, and the first relief groove and the second relief groove make way for the elastic pressing part and the handle respectively.

[0037] The above reasonable installation structure design makes the sliding lock mechanism firmly installed and easy to disassemble, maintain, and the cooperation between the slide rail and the locking part ensures the stability and reliability of the sliding of the locking part. The design of the handle and the relief groove makes the user operation more convenient, improving the user experience, and at the same time ensuring the normal functioning of each component of the sliding lock mechanism.

[0038] Specifically, a spring post 22 is arranged on one side of the locking part. One end of the elastic reset part is sleeved on the spring post 22, and the other end is abutted against the side of the groove.

[0039] In this embodiment, a spring post is arranged on one side of the locking part. One end of the elastic reset part is sleeved on the spring post, and the other end is abutted against the side of the groove. When the locking part is in the locked state, the elastic reset part is compressed to store elastic potential energy. After pressing the elastic switching cover to release the limit, the elastic reset part releases the elastic potential energy and pushes the locking part to slide to the unlocked state. The cooperation between the spring post and the elastic reset part provides a stable and reliable elastic force for unlocking the locking part, enabling the locking part to automatically switch from the locked state to the unlocked state, simplifying the unlocking operation process, improving the convenience and reliability of unlocking, and eliminating the need for the user to manually apply continuous force to push the locking part to unlock.

[0040] Specifically, a limiting boss 24 that is mutually limited with the limiting part is arranged on the elastic part. A first inclined surface 25 is arranged on one side of the limiting boss 24, and a second inclined surface 26 that is adapted to the first inclined surface is arranged on the limiting part.

[0041] In this embodiment, the limiting boss of the elastic part cooperates with the limiting part to limit the locking part. When sliding from the unlocked state to the locked state, the guiding functions of the first inclined surface and the second inclined surface can reduce the resistance between the limiting boss and the limiting part, making the return more smooth and labor-saving.

[0042] Specifically, connecting grooves 27 are arranged on both sides of the groove, elastic plates 28 are arranged on both sides of the elastic switching cover, and connecting steps 29 for connecting with the connecting grooves are arranged on the elastic plates 28.

[0043] In this embodiment, the connecting grooves on both sides of the groove cooperate with the connecting steps on the elastic plates on both sides of the elastic switching cover. Through the elastic deformation of the elastic plates, the detachable connection between the elastic switching cover and the groove is realized, which is convenient for the installation and disassembly of the elastic switching cover.

[0044] Specifically, a pressing indication mark 30 is arranged on the elastic pressing part, and a locking direction mark 31 is arranged on the surface of the elastic switching cover.

[0045] In this embodiment, the pressing indication mark on the elastic pressing part provides a clear pressing position guide for the user, and the locking direction mark on the surface of the elastic switching cover prompts the user of the locking direction of the locking part, enabling the user to perform the locking and unlocking operations more accurately and quickly.

[0046] Specifically, a fastening groove 32 is arranged on the side surface of the bottom shell far from the hinged side. A box cover fastening part 33 is rotatably connected in the fastening groove 32. The groove is located in the fastening groove below the box cover fastening part. The locking part extends downward to the bottom shell with a locking support leg 34. The fastening part is located on the surface of the box cover far from the hinged side, and a locking step 35 for connecting with the locking support leg 34 is arranged on the fastening part.

[0047] In this embodiment, the box cover fastening part is rotatably connected in the fastening groove of the bottom shell, and the locking support leg extending downward from the locking part to the bottom shell is connected to the locking step of the box cover fastening part, realizing the locking of the box body by the sliding lock mechanism.

[0048] Since the groove and the components in the groove (such as the elastic reset part, the locking part and the elastic switching cover) are directly located in the original fastening groove of the box body, the design of these structures will not change the original outer shape of the box body and increase the volume of the box body. Moreover, the internal space of the box body is not easily occupied due to the setting or forming of the above-mentioned movable areas and components on the side wall, ensuring the flatness of the inner wall of the box body and effectively ensuring that the internal space of the box body is not affected.

[0049] Specifically, the hooked part is located on the surface of the bottom shell near the hinged side of the bottom shell, and the hooked part is located on the surface of the box cover near the hinged side of the box cover.

[0050] In this embodiment, the hook portion is arranged on the bottom case near the hinge side, and the hooked portion is arranged on the lid near the hinge side. When two storage boxes are stacked vertically, the hook portion of the bottom case of the upper storage box is hooked with the groove of the hooked portion of the lid of the lower storage box to realize the connection of the hook lock mechanism, which acts together with the sliding lock mechanism to lock the stacked boxes.

[0051] Specifically, bumps 36 are arranged on the surfaces of the four corners of the bottom case, alignment grooves 37 are arranged on the bumps 36, and alignment steps 38 for alignment and cooperation with the bumps are arranged on the surfaces of the four corners of the lid.

[0052] In this embodiment, the bumps and alignment grooves at the four corners of the bottom case cooperate with the alignment steps at the four corners of the lid. When the storage boxes are stacked vertically, through the precise cooperation between the bumps and the alignment steps (the two are limited by the mutually attached side surfaces), the quick and accurate stacking positioning of the storage boxes is realized, ensuring that the sliding lock mechanism and the hook lock mechanism can be accurately docked.

[0053] This application also provides a method for using the sliding lock mechanism, including a locking operation and an unlocking operation: Locking operation: S1. Stack two storage boxes vertically, and at the same time, make the bumps at the corners of the bottom case of the upper storage box fit and limit with the alignment steps at the corners of the lid of the lower storage box to realize the vertical stacking of the storage boxes; S2. Push the locking part of the sliding lock mechanism to connect the locking support leg of the locking part with the locking step of the buckling part of the lid of the upper storage box, so as to realize the locking of the sliding lock mechanism for the two boxes. At the same time, hook the hook portion near the hinge side of the bottom case of the upper storage box with the groove of the hooked portion near the hinge side of the lid of the lower storage box to complete the connection of the hook lock mechanism; Unlocking operation: S1. Press the pressing indication marking area of the elastic pressing part. The elastic pressing part acts on the elastic part to cause the elastic part to deform and break away from the restriction of the limiting part. Under the elastic force of the elastic reset part, the locking part slides towards the unlocking state side, so that the locking support leg separates from the locking step of the buckling part of the lid of the upper storage box.

[0054] In this embodiment, during the locking operation, first realize the stacking positioning of the storage boxes through the bumps and the alignment steps, then push the locking part to connect the locking support leg with the locking step, and hook the hook portion and the hooked portion to complete the double-sided locking; during the unlocking operation, press the elastic pressing part to make the elastic part break away from the limit, and under the action of the elastic reset part, the locking part slides to automatically realize unlocking. Through this usage method, the functional advantages of the sliding lock mechanism and the hook lock mechanism can be fully exerted, realizing the quick and stable locking and the convenient and reliable unlocking of the storage boxes, meeting the user's needs for using the storage boxes in different scenarios, and improving the practicability and versatility of the storage boxes.

[0055] Notice to all technical personnel: Although the present invention has been described according to the above specific embodiments, the idea of the present invention is not limited to this invention alone. Any modification that utilizes the idea of the present invention will be included within the scope of protection of this patent right.

Claims

1. A stackable storage box that includes a box body that can be stacked, the box body includes a bottom shell and a box cover hinged to the bottom shell, and is characterized in that: Also included is a locking mechanism for locking the two stacked boxes, the locking mechanism comprising a sliding lock mechanism located on one side of the box body and a hook lock mechanism located on the other side of the box body; The sliding lock mechanism includes a buckling portion, an elastic reset member, a locking member and an elastic switching cover. The locking member is slidably arranged on the box body in a left-right moving manner, and has the following two states as its moving position changes: A locked state is achieved between two stacked boxes when connected to the buckle part, and an unlocked state is achieved between two stacked boxes when separated from the buckle part; The elastic return member provides an unlocking elastic force for the lock member to slide from the locked state to the unlocked state; The elastic switch cover is provided with an elastic pressing portion and a limiting portion, the limiting portion cooperates with the elastic portion on the above-mentioned locking member, and the elastic pressing portion is pressed to act on the elastic portion, so that the elastic portion is separated from the limiting portion to release the limiting effect between the limiting portion and the elastic portion; The elastic pressing part is released to reset the elastic part, and when the elastic part abuts against the limiting part, the locking member is kept in the locked state; The hook lock mechanism comprises a hook portion and a hooked portion, and the hooked portion is provided with a groove for hooking with the hook portion.

2. The stackable storage box according to claim 1, characterized in that: A groove for installing a sliding lock mechanism is provided on the side surface of the bottom shell away from the hinged side, a slide rail for slidingly cooperating with the locking member is provided in the groove, a handle and a slide groove for slidingly cooperating with the slide rail are provided on the locking member, the elastic switching cover is detachably connected to the groove, and a first make way groove for making way for the elastic pressing part and a second make way groove for extending the handle are provided on the elastic switching cover.

3. The stackable storage box according to claim 2, wherein: A spring column is arranged on one side of the locking member, one end of the elastic reset member is sleeved on the spring column, and the other end is abutted against the side surface of the groove.

4. The stackable storage box according to claim 2, wherein: The elastic part is provided with a limiting boss which limits the limiting part, one side of the limiting boss is provided with a first inclined surface, and the limiting part is provided with a second inclined surface which matches the first inclined surface.

5. The stackable storage box according to claim 2, wherein: Connecting grooves are arranged on both sides of the groove, elastic plates are arranged on both sides of the elastic switching cover, and connecting steps connected to the connecting grooves are arranged on the elastic plates.

6. The stackable storage box according to claim 1 or 2 or 5, characterized in that: The elastic pressing portion is provided with a pressing indication mark, and the surface of the elastic switching cover is provided with a locking direction mark.

7. The stackable storage box according to claim 2, wherein: A snap-fitting groove is arranged on the side surface of the bottom shell away from the hinged side, and a box cover snap-fitting piece is rotatably connected in the snap-fitting groove. The groove is located in the snap-fitting groove below the box cover snap-fitting piece, and a locking foot is extended from the lock piece to the bottom of the bottom shell. The snap-fitting part is located on the surface of the box cover away from the hinged side, and a locking step connected to the locking foot is arranged on the snap-fitting part.

8. The stackable storage box according to claim 1, wherein: The hook portion is located on the bottom shell surface close to the hinge side of the bottom shell, and the hooked portion is located on the box cover surface close to the hinge side of the box cover.

9. The stackable storage box according to claim 1, wherein: The four corner surfaces of the bottom shell are provided with protrusions, the protrusions are provided with alignment grooves, and the four corner surfaces of the box cover are provided with alignment steps for alignment and matching with the protrusions.

10. A method for using the sliding lock mechanism of the storage box according to any one of claims 1 - 9, characterized in that, Including locking and unlocking operations: Locking operation: S1. Stack two storage boxes vertically, and at the same time, make the bumps at the corners of the bottom shell of the upper storage box fit and be limited with the alignment steps at the corners of the lid of the lower storage box, so as to realize the vertical stacking of the storage boxes; S2. Push the locking part of the sliding lock mechanism to connect the locking support leg of the locking part with the locking step of the lid fastening part of the upper storage box, so as to realize the locking of the two boxes by the sliding lock mechanism. At the same time, hook the hook part near the hinge side of the bottom shell of the upper storage box with the groove of the hooked part near the hinge side of the lid of the lower storage box to complete the connection of the hook lock mechanism; Unlocking operation: S1. Press the pressing indication marking area of the elastic pressing part. The pressing of the elastic pressing part acts on the elastic part, causing the elastic part to deform and break away from the restriction of the limiting part. Under the elastic force of the elastic reset part, the locking part slides towards the unlocking state side, so that the locking support leg separates from the locking step of the lid fastening part of the upper storage box.

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