CN217792463U - Multilayer storage box - Google Patents

Abstract

The utility model discloses a multilayer storage box, which comprises a box cover and at least two box bodies which are overlapped and connected; the box cover is provided with a lifting handle, and two end parts of the lifting handle are connected to two opposite side walls of the box cover through rotating shafts in a shaft mode; the handle can rotate relative to the box cover to be switched between a first state and a second state; two end parts of the handle are provided with first locking bulges, and two opposite side walls of the box body are provided with second locking bulges; the first locking bulge is positioned below the second locking bulge in the first state, so that the box cover is tightly locked on the box body; in the second state, the first locking bulge leaves the lower part of the second locking bulge, so that the box cover can be opened from the box body; the advantages are that: firstly, the connection stability of the box cover and the box body in a portable state is enhanced, and the box cover can be locked immediately after being lifted, so that the use is more convenient; secondly, the load of the box cover is reduced, and the deformation of the box cover due to upward tension is avoided; thirdly, the stress of the connecting point of the handle and the side wall of the box cover is shared, and the abrasion caused by the single stress of the connecting point is avoided.

Description

Multilayer storage box

Technical Field

The utility model relates to a storing box especially relates to a multilayer storing box, and the storing layer includes a plurality of range upon range of box bodies of longitudinal distribution.

Technical Field

The household storage box is used for placing various articles such as candies, biscuits and the like. When special foods such as dumplings and eggs are stored, a plurality of layers of storage boxes are needed, one layer of dumplings or eggs are placed in each box body, and storage space is guaranteed while mutual stacking of the stored foods is avoided.

The patent document with the grant publication number of CN202063330U discloses a multilayer preservation box, which comprises a box cover and a plurality of box bodies, wherein the box cover is arranged on an opening of the box body on the top end, the box cover and the box body or the box body and the box body are locked to form a sealed locking device, the locking device comprises at least two fasteners arranged on the box cover, at least two fasteners arranged on the box body and a clamping piece arranged on the box body and matched with the fasteners on the box cover or the other box body for use, the box cover is the same as the fasteners on the box body in structure, the fasteners on the box body are arranged at the lower end of the outer wall surface of the box body, and the clamping piece corresponds to the fasteners on the box body and is arranged below the fasteners.

Patent document with grant publication number CN208647427U discloses a preservation box, including lid and a plurality of mutual superimposed box body, the upper end of box body articulates there is the buckle, and the lower extreme shaping of box body or lid has the draw-in groove portion, and buckle and draw-in groove portion cooperation realize lid and top box body, adjacent box body and be connected between the box body.

The aforesaid patent all discloses multilayer superimposed storing box, and above-mentioned storing box does not all establish the handle. But the multilayer box body stack makes the whole volume of storing box great, and weight is also generally heavier behind the storing, does not have the handle to be unfavorable for the transport of multilayer storing box. Therefore, those skilled in the art tend to hinge handles to the lid.

However, after long-time use, the box cover is easily deformed under the influence of the up-and-down tension, so that the firmness of the side buckling structure is influenced; secondly, the hinge point of the handle is easily damaged due to over-heavy load, and finally the handle is separated from the box cover.

SUMMERY OF THE UTILITY MODEL

In view of the storing box lid that has the handle among the prior art is out of shape easily, and the junction is worn and torn easily, and during the transport, lid and box body drop etc. easily not enough, the utility model provides a connect more firmly, lid non-deformable's multilayer storing box.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the multilayer storage box comprises a box cover and at least two box bodies which are opened at the upper sides and are mutually stacked;

the box cover is connected with the box body on the uppermost side and the adjacent box bodies through lock catch structures;

the box cover seals the opening of the box body at the uppermost side, and the bottom of the adjacent upper side box body seals the opening of the lower side box body;

the box cover is provided with a lifting handle, and two end parts of the lifting handle are rotatably bridged on two opposite side walls of the box cover;

the handle can rotate relative to the box cover to be switched between a first state and a second state;

the end part of the handle is provided with a first locking structure, and the side wall of the box body is provided with a second locking structure matched with the first locking structure;

in a first state, the first locking structure and the second locking structure are locked with each other, so that the box cover is tightly locked on the box body at the uppermost side;

in a second state, the first locking structure and the second locking structure are separated from each other, so that the cap can be separated from the uppermost case body.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the handle comprises a handle body and a connecting part positioned at the end part; the connecting part is provided with a rotating shaft, the lower edge of the box cover is provided with a connecting lug extending downwards, and the rotating shaft is inserted into a rotating hole of the connecting lug.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the first locking structure is arranged on the connecting part; the first locking structure is a first locking bulge protruding from the inner wall of the connecting part, and the second locking structure is a second locking bulge protruding from the side wall of the box body;

in the first state, the first locking protrusion is positioned below the second locking protrusion; in the second state, the first locking protrusion leaves the lower part of the second locking protrusion.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the side wall of the box body is provided with arc-shaped guide ribs positioned at two sides of the second locking bulge; and an arc-shaped guide groove is formed on one side of the arc-shaped guide rib close to the second locking protrusion.

The utility model provides a further preferred technical scheme who above-mentioned technical problem adopted is: the latch structures are located on first opposing sides, and the handle bridges second opposing sides; the locking structure comprises a first clamping protrusion on the first opposite side wall of the box cover, a hinged buckle and a second clamping protrusion on the first opposite side wall of the box body; the hinged buckle of the box body is upwards clamped with the first clamping protrusion of the adjacent box cover or the second clamping protrusion of the adjacent box body.

The utility model provides an another technical scheme that above-mentioned technical problem adopted does: the multilayer storage box comprises a box cover and at least two box bodies which are stacked and connected to form a multilayer box with an upper opening;

the box cover is provided with a lifting handle, and two end parts of the lifting handle are connected to two opposite side walls of the box cover through rotating shafts in a shaft mode;

the handle can rotate relative to the box cover to be switched between a first state and a second state;

two end parts of the handle are provided with first locking bulges, and two opposite side walls of the multilayer box are provided with second locking bulges;

in the first state, the first locking bulge is positioned below the second locking bulge, so that the box cover is tightly locked on the multilayer box;

in the second state, the first locking protrusion is separated from the lower part of the second locking protrusion, so that the box cover can be opened from the multi-layer box.

The utility model provides a another technical scheme's that above-mentioned technical problem adopted preferred: the handle comprises a handle body and a connecting part positioned at the end part; the rotating shaft and the first locking bulge are arranged on the connecting part, and the rotating shaft penetrates through the connecting hole of the handle body and is in shaft connection with the connecting lug on the lower edge of the box cover.

The utility model provides a another technical scheme's that above-mentioned technical problem adopted preferred: the side wall of the box body is provided with arc-shaped guide ribs positioned at two sides of the second locking bulge; and an arc-shaped guide groove is formed on one side of the arc-shaped guide rib close to the second locking protrusion.

The utility model provides a technical scheme who still another that above-mentioned technical problem adopted does: the multilayer storage box is characterized by comprising a box cover and at least two box bodies with openings on the upper sides;

the box bodies can be stacked mutually according to any sequence, and the box cover is connected with the box body at the uppermost side and the adjacent box bodies through the lock catches positioned at the first opposite sides to form a multi-layer structure which is mutually connected;

a handle is bridged between the second opposite side walls of the box cover, and the handle can rotate relative to the box cover to switch between a first state and a second state;

two end parts of the handle are provided with first locking bulges, and the first locking bulges extend into the side wall of the box cover;

second locking bulges are arranged on the second opposite side walls of the box bodies, and the first locking bulges are matched with the second locking bulges;

in a first state, the lifting handle is erected relative to the box body to be in a hand-held state, the first locking bulge is positioned below the second locking bulge, and the box cover is tightly locked on the box body at the uppermost side;

under the second state, the handle is relative the box body level is in order to be the state of accomodating, first locking arch leaves the bellied below of second locking, the lid can be separated from the box body of the top when the hasp is relieved.

The utility model provides a technical scheme's that above-mentioned technical problem adopted preferred still another: the locking structure comprises a first clamping protrusion on the first opposite side wall of the box cover, a hinged buckle and a second clamping protrusion on the first opposite side wall of the box body; the hinged buckle of the box body is upwards clamped with the first clamping bulge of the adjacent box cover or the second clamping bulge of the adjacent box body;

the second opposite side wall of the box body is provided with arc-shaped guide ribs positioned at two sides of the second locking bulge; and an arc-shaped guide groove is formed on one side of the arc-shaped guide rib close to the second locking protrusion.

Compared with the prior art, the utility model has the advantages that realize the monolithic connection of handle, lid and box body through the locking structure, strengthened under the portable state the stability of being connected of lid and box body to carry promptly the locking, it is more convenient to use. In addition, the structure also reduces the load of the box cover and avoids the deformation of the box cover due to upward tension. Meanwhile, the stress of the connecting point of the handle and the side wall of the box cover is shared, and the abrasion caused by the single stress of the connecting point is avoided. And under the state of accomodating, the handle can be rotated again and transferred and do not influence the storing space, and do not disturb the opening of lid.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the preferred embodiments and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on the concept of a composition or construction of the object being described and may include exaggerated displays and are not necessarily drawn to scale.

FIG. 1 is a first schematic view of a multi-layered storage box according to a preferred embodiment of the present invention in a first state;

FIG. 2 is a second schematic view of the multi-layered storage box according to the first preferred embodiment of the present invention;

FIG. 3 is a third schematic view of the multi-layered storage box according to the first state of the preferred embodiment of the present invention;

FIG. 4 is a cross-sectional view of the multi-layered storage box of a preferred embodiment of the present invention in a first state;

FIG. 5 is a partial view of FIG. 2 of the multi-layered storage box according to a first state of the preferred embodiment of the present invention;

FIG. 6 is a partial view of the multi-layered storage box of a preferred embodiment of the present invention shown in FIG. 4 in a first position;

FIG. 7 is an exploded view of the multi-layered storage case of a first preferred embodiment of the present invention;

FIG. 8 is a first schematic view of the multi-layered storage box according to the preferred embodiment of the present invention in the second state;

FIG. 9 is a second view of the multi-layered storage box according to the second preferred embodiment of the present invention;

FIG. 10 is a third view of the multi-layered storage box according to the second preferred embodiment of the present invention;

FIG. 11 is a cross-sectional view of the multi-layered storage box of a preferred embodiment of the present invention in a second state;

FIG. 12 is a partial view of the multi-layered storage box of the preferred embodiment of the present invention in a second position in FIG. 9;

FIG. 13 is a partial view of FIG. 11 of the multi-layered storage box of a preferred embodiment of the present invention in a second position;

FIG. 14 is an exploded view of the multi-layered storage box according to the second preferred embodiment of the present invention;

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.

It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

As shown in fig. 1 to 14, the present embodiment provides a multi-layered storage box, which includes a box cover 100 and at least two box bodies 200 stacked and connected to form an upper-opening multi-layered box. The box cover 100 may be opened upward to close the upper opening of the multi-layered box.

As shown in fig. 1-4 and 8-11, the lid 100 is provided with a handle 300, and both end portions of the handle 300 are rotatably connected across a second opposite side wall of the lid 100. A handle 300 is rotatable relative to the lid 100 to switch between a first state and a second state.

As shown in fig. 1-4, the handle 300 in the first position substantially erects in an arch shape relative to the multi-ply box, i.e., the first position is a hand-held position of the handle 300. The user lifts the multilayer storage box in the air through the handle 300.

As shown in fig. 8-11, the handle 300 is horizontal to the multi-layered box in the second state for being in the storage state, but it should be understood that the horizontal is not an absolute limitation, and the handle 300 is only located at a position that does not interfere with the opening of the box cover 100.

Furthermore, the box cover 100 is connected with the box body 200 at the top and the adjacent box bodies 200 are connected with the box body 200 through a locking structure; the cap 100 closes the opening of the uppermost case 200, and the bottom of the adjacent upper case 200 closes the opening of the lower case 200.

In this embodiment, as shown in fig. 5-7 and 12-14, the end of the handle 300 is provided with a first locking structure, and at least a second opposite side wall of the uppermost box 200 is provided with a second locking structure cooperating with the first locking structure.

In this embodiment, the outer side of each box 200 is provided with the same second locking structure and the same corresponding structure of the locking structure, so that the boxes 200 can be stacked in any order.

As shown in fig. 5-7 and 12-14, the first locking structure is a first locking protrusion 1 on an inner wall of the end portion of the handle 300, and the first locking protrusion 1 extends to the inside of the corresponding side wall of the box cover 100. The second locking structure is a second locking protrusion 2 on a second opposite side wall of each case 200, and the first locking protrusion 1 is engaged with the second locking protrusion 2.

As shown in fig. 4 to 7, in the first state, the first locking protrusion 1 is located below the second locking protrusion 2, and the first locking structure and the second locking structure are locked with each other, so that the cap 100 is locked and closed to the uppermost case 200.

As shown in fig. 11 to 14, in the second state, the first locking protrusion 1 is separated from the lower side of the second locking protrusion 2, and the first locking structure and the second locking structure are separated from each other, so that the cap 100 can be opened or separated from the uppermost case 200.

It should be understood that the handle 300 can be rotated in both directions, i.e., the first locking protrusion 1 can enter from both sides of the second locking protrusion 2 to the lower side thereof, and can leave from both sides thereof to the lower side thereof. Thus, inconvenience in use caused by limitation of the rotation direction of the handle 300 is avoided, and the experience of the user is further enhanced.

Based on the above, the handle 300 realizes the connection between the box cover 100 and the box body 200 through the locking structure, thereby reducing the load of the box cover 100 and avoiding the deformation of the box cover 100 due to the upward pulling force; meanwhile, the stress of the connection point of the handle 300 and the side wall of the box cover 100 is shared, and the abrasion caused by single stress of the connection point is avoided. In addition, the locking function is implemented in addition to the function of reinforcing the connection. Under portable state, lid 100 and box body 200 lock tightly, and the hasp structure of supplementary box body 200 and lid 100 itself plays and connects both effect, avoids lid 100 and box body 200 to separate and lead to the box body 200 to break into pieces. In the storage state, the handle 300 can be rotated and lowered without affecting the storage space and without interfering with the opening of the box cover 100.

Preferably, as shown in fig. 5-7 and 12-14, both end portions of the handle 300 are provided with rotation shafts a, the lower edge of the second opposite sidewall of the box cover 100 is provided with downwardly extending coupling lugs b, the coupling lugs b are located on the center line of the box cover 100, and the rotation shafts a are inserted into the rotation holes c of the coupling lugs b to realize the coupling between the handle 300 and the box cover 100.

More preferably, as shown in fig. 7, the handle 300 includes a handle body 301 and a connecting member 302 at an end portion, and the handle body 301 may be made of a rigid material such as plastic or metal, or may be made of a flexible material such as cloth, leather, plastic sheet, and woven tape. The connecting member 302 is made of a rigid material such as plastic or metal.

The rotating shaft a and the first locking protrusion 1 are arranged on the inner wall of the connecting part 302, and the rotating shaft a and the first locking protrusion 1 penetrate through the first connecting hole and the second connecting hole of the handle body 301, so that the handle body 301 and the connecting part 302 can be detachably connected. And the first locking protrusion 1 is located at one side of the rotation axis a, and when the handle 300 is rotated, the first locking protrusion 1 is rotated around the coupling lug b of the box cover 100 and engaged with the second locking structure near the coupling lug b.

As shown in fig. 6 and 7, the connecting member 302 further includes a circular clip f, the rotation axis a is located at the center of the circular clip f, and the first locking protrusion 1 is eccentrically located at one side of the rotation axis a.

As shown in fig. 5, 7, 10 and 12, the side wall of the box body 200 is provided with arc-shaped guide ribs 3 positioned at both sides of the second locking protrusion 2; one side of the arc-shaped guide rib 3 close to the second locking protrusion 2 forms an arc-shaped guide groove. And the first locking protrusion 1 is a cylindrical protrusion having an arc surface that can roll along the arc guide rib 3. In this way, smooth switching of the relative positions of the first locking projection 1 and the second locking projection 2 can be ensured.

As shown in fig. 6-7 and 13-14, the lower surface of the second locking projection 2 is provided with a groove h, and the first locking projection 1 is provided with a projection g matching with the groove. When handle 300 rotated to first state, first locking arch 1 got into the below of second locking arch 2, and convex part g enters into the recess, has not only restricted longitudinal displacement and has also restricted the lateral displacement between them, has further improved the fastness of connecting.

As shown in fig. 7, the case body 200 and the case cover 100 are connected by a cuff. The lower edge of the box body 200 is provided with a first annular connecting part 4, the upper edge of the box body 200 is provided with a second annular connecting part 5, and the lower edge of the box cover 100 is provided with a third annular connecting part 6. The outer diameter of the first annular connection 4 matches the inner diameter of the second annular connection 5 and the inner diameter of the third annular connection 6 matches the outer diameter of the second annular connection 5. That is, when the box body 200 is connected to the box body 200, the second annular connecting portion 5 is sleeved outside the first annular connecting portion 4 to realize the looping connection. When the box body 200 is connected with the box cover 100, the third annular connecting part 6 is sleeved outside the second annular connecting part 5 to realize the looping connection.

And the first annular connecting part 4 is recessed in the peripheral wall of the box body 200 to form a first annular recess 7, and the second annular connecting part 5 is butted at the first annular recess 7, so that the outer surfaces of the butted parts of the adjacent box bodies 200 are flush. Not only the appearance is cleaner and tidier, but also the clear difficulty caused by the accumulated dirt in the gap is avoided. And more importantly, the upper wall of the first annular recess 7 limits the upward movement of the lower docking box 200, so that the connection between the boxes 200 is firmer, and the sealing performance of the boxes 200 is further improved.

In addition, the outer peripheral wall of the box body 200 is provided with a circle of continuous or interval broken ribs 8, and the outer peripheral wall of the box body 200 forms the second annular connecting part 5 on the extending wall above the ribs 8. The second annular connecting part 5 is recessed in the convex rib 8. When the box body 200 and the cap 100 are coupled, the lower end of the cap 100 is coupled to the rib 8, and the downward movement of the cap 100 is restricted. Preferably, the arc-shaped guide rib 3 is integrated with the convex rib 8.

As shown in fig. 1, 3 and 7, the locking structure includes a first locking protrusion k1 on a first opposite side wall of the box cover 100, a hinge locking protrusion k2 and a second locking protrusion k3 on a first opposite side wall of the box body 200; the hinge latch k2 of the case body 200 upwardly latches the first latch k1 of the adjacent box cover 100 or the second latch k3 of the adjacent case body 200.

Preferably, a first connecting groove m is formed on a first opposite side wall of the box cover 100, the first protrusion k1 is located at a lower side of the first connecting groove, a second connecting groove n is formed on a first opposite side wall of the box body 200, the hinge buckle k2 is rotatably connected to two side groove walls of the second connecting groove, and the second protrusion k3 is located in the second connecting groove and below the hinge buckle k 2.

In the in-process of in-service use, deposit the quantity of food according to actual need, superpose the box body 200 of different quantity, only need with the articulated buckle k2 card that the upper end of downside box body 200 extended on the second card protruding k3 of upside box body 200 lower extreme, just can realize the lock tightly between the stack box body 200, have good sealed effect between each box body 200. Meanwhile, the box cover 100 is installed above the uppermost box body 200, and the latch of the hinge latch k2 of the uppermost box body 200 is latched to the first latch k1 of the box cover 100, thereby realizing the first locking of the box body 200 and the box cover 100. When the handle 300 is lifted, the second locking of the box body 200 and the box cover 100 is achieved.

In addition, in the present embodiment, as shown in fig. 3 and 7, a plurality of parallel ribs 9 are formed on the bottom surface of the box body 200. When food such as dumplings is put into the box body 200, the rib 9 can prevent the bottom of the dumplings from clinging to the bottom of the box body 200 and being adhered. The centre of bead 9 is equipped with fretwork department p, and when the fruit of taking water on the surface was put into and is put into box body 200, water can be followed fretwork and flowed, avoids the accumulation under fruit to lead to accelerating the rotten of food.

It is right above the utility model provides a multilayer storage tank introduces, and it is right to have used specific individual example here the utility model discloses a principle and embodiment have explained, and the description of above embodiment is only used for helping to understand the utility model discloses and core thought.

It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the scope of the appended claims.

Claims (10)

1. The multilayer storage box is characterized by comprising a box cover and at least two box bodies which are provided with openings at the upper sides and are mutually stacked;

the box cover is connected with the box body on the uppermost side and the adjacent box bodies are connected with the box body through lock catch structures;

the box cover seals the opening of the box body at the uppermost side, and the bottom of the adjacent upper side box body seals the opening of the lower side box body;

the box cover is provided with a lifting handle, and two end parts of the lifting handle are rotatably bridged on two opposite side walls of the box cover;

the handle can rotate relative to the box cover to be switched between a first state and a second state;

the end part of the handle is provided with a first locking structure, and the side wall of the box body is provided with a second locking structure matched with the first locking structure;

in a first state, the first locking structure and the second locking structure are locked with each other, so that the box cover is tightly locked on the box body at the uppermost side;

in the second state, the first locking structure and the second locking structure are separated from each other, so that the box cover can be separated from the box body at the uppermost side.

2. The multi-layer storage box of claim 1, wherein the handle includes a handle body and a connecting member at an end portion; the connecting part is provided with a rotating shaft, the lower edge of the box cover is provided with a connecting lug extending downwards, and the rotating shaft is inserted into a rotating hole of the connecting lug.

3. The multilayer storage case of claim 2, wherein the first locking structure is provided on the connecting member; the first locking structure is a first locking bulge protruding from the inner wall of the connecting part, and the second locking structure is a second locking bulge protruding from the side wall of the box body;

in the first state, the first locking protrusion is positioned below the second locking protrusion; in the second state, the first locking protrusion leaves the lower part of the second locking protrusion.

4. The multilayer storage box of claim 2, wherein the side wall of the box body is provided with arc-shaped guide ribs positioned at two sides of the second locking protrusion; and an arc-shaped guide groove is formed on one side of the arc-shaped guide rib close to the second locking protrusion.

5. The multi-layer storage case of claim 1, wherein said latch structure is located on a first opposing side and said handle bridges a second opposing side; the locking structure comprises a first clamping protrusion on the first opposite side wall of the box cover, a hinged buckle and a second clamping protrusion on the first opposite side wall of the box body; the hinged buckle of the box body is upwards clamped with the first clamping protrusion of the adjacent box cover or the second clamping protrusion of the adjacent box body.

6. The multilayer storage box is characterized by comprising a box cover and at least two box bodies which are stacked and connected to form a multilayer box with an upper opening;

the box cover is provided with a lifting handle, and two end parts of the lifting handle are connected to two opposite side walls of the box cover through rotating shafts in a shaft mode;

the handle can rotate relative to the box cover to be switched between a first state and a second state;

two end parts of the handle are provided with first locking bulges, and two opposite side walls of the multilayer box are provided with second locking bulges;

in the first state, the first locking bulge is positioned below the second locking bulge, so that the box cover is tightly locked on the multilayer box;

in the second state, the first locking protrusion is separated from the lower part of the second locking protrusion, so that the box cover can be opened from the multi-layer box.

7. The multi-layer storage box of claim 6, wherein the handle includes a handle body and a connecting member at an end portion; the rotating shaft and the first locking bulge are arranged on the connecting part, and the rotating shaft penetrates through the connecting hole of the handle body and is in shaft connection with the connecting lug on the lower edge of the box cover.

8. The multilayer storage box according to claim 6, wherein the side wall of the box body is provided with arc-shaped guide ribs positioned at two sides of the second locking bulge; and an arc-shaped guide groove is formed on one side of the arc-shaped guide rib close to the second locking protrusion.

9. The multilayer storage box is characterized by comprising a box cover and at least two box bodies with openings on the upper sides;

the box bodies can be stacked mutually according to any sequence, and the box cover is connected with the box body at the uppermost side and the adjacent box bodies through the lock catches positioned at the first opposite sides to form a multi-layer structure which is mutually connected;

a handle is bridged between the second opposite side walls of the box cover, and the handle can rotate relative to the box cover to switch between a first state and a second state;

two end parts of the handle are provided with first locking bulges, and the first locking bulges extend into the side wall of the box cover;

second locking bulges are arranged on the second opposite side walls of the box bodies, and the first locking bulges are matched with the second locking bulges;

in a first state, the lifting handle is erected relative to the box body to be in a hand-held state, the first locking bulge is positioned below the second locking bulge, and the box cover is tightly locked on the box body at the uppermost side;

under the second state, the handle is relative the box body level is in order to be the state of accomodating, first locking arch leaves the bellied below of second locking, the lid can be separated from the box body of the top when the hasp is relieved.

10. The multi-layer storage case of claim 9, wherein the locking structure comprises a first protrusion on a first opposing side wall of the case cover, a hinged catch on a first opposing side wall of the case body, and a second protrusion; the hinged buckle of the box body is upwards clamped with the first clamping bulge of the adjacent box cover or the second clamping bulge of the adjacent box body;

the second opposite side wall of the box body is provided with arc-shaped guide ribs positioned at two sides of the second locking bulge; and an arc-shaped guide groove is formed on one side of the arc-shaped guide rib close to the second locking protrusion.

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