CN108839953B - turnover container - Google Patents

Abstract

This application discloses a turnover container. The turnover container has a box body and two box lids hinged to the box body, one of the box lids is hinged to a first side edge of the top of the box body, and the other box lid is hinged to a first side edge of the top of the box body opposite to the first side edge. the second side edge. The box body has an inner sleeve and an outer sleeve. The inner sleeve is placed inside the outer sleeve, and a hollow space is formed between the inner sleeve and the outer sleeve. The turnover container of the present invention can not only effectively maintain heat, realize recycling, but also facilitate assembly and operation.

Description

turnover container

Technical field

The present invention relates to containers, and in particular to a thermal insulation structure of the container.

Background technique

The current general specifications of turnover boxes are such as 600×400×360mm, 550×385×270mm, etc. The external dimensions of this type of container are relatively uniform in length and width. They are standardized turnover tools that can maximize the available volume and occupy space during recycling. The space is minimized, but in specific use cases, such as fresh cold chain preservation and transportation industries, it is required that the fresh food placed inside the turnover box is not affected by the outside temperature to the greatest extent, that is, the heat inside and outside the box is blocked to the greatest extent. However, the materials and processes of the existing turnover boxes are relatively simple, and they cannot achieve thermal insulation or heat insulation. When the external temperature difference is large, the fresh food in the box is more likely to be affected by room temperature and become cold. Or it may get hot and cause rot. Secondly, add thermal insulation cotton or thermal insulation protective cover to the existing turnover box.

Based on the above two preservation methods, one is that the thermal insulation effect is relatively low, or even has no thermal insulation effect; the other is that thermal insulation sheaths are added to the inner and outer walls of the box, which lacks convenience in operation and is a component independent of the turnover box. , inconvenient to manage, easy to lose, easy to damage, and the existing thermal insulation sheath has a large thickness, which will lead to a small available volume inside the box, a low recycling nesting rate (large recycling space), and the product is easy to exist Damaged parts or consumables will cause higher maintenance costs in the future.

In addition, when assembling the box lids 3a and 4a to the box body 2a of the turnover box 1a of the prior art, it is necessary to insert a long hinge shaft 6a with a protrusion 5a into the box body and the box body from the through hole 7a at one end of the box lid. Hinge holes in lid. The through hole 7a is coaxial with the hinge hole. Therefore, a protrusion 5a must be provided on the hinge shaft 6a to prevent the hinge shaft from being accidentally disengaged. After assembly, the protrusion 5a is located in the bayonet 8a formed between the box body and the box cover, thereby preventing the hinge shaft from falling off, as shown in Figure 15-17. Because the lid is long and the hinge axis has a bulge, assembly is time-consuming and laborious.

Contents of the invention

The object of the present invention is a turnover container that can effectively maintain and insulate heat and further does not substantially affect the nesting rate.

In order to achieve the above object, the present invention provides a turnover container, which has a box body and two box lids hinged to the box body, wherein one of the box lids is hinged to the first side of the top of the box body. edge, the other box cover is hinged to the second side edge of the top of the box body opposite to the first side edge, the box body has an inner sleeve and an outer sleeve, and the inner sleeve is placed inside the outer sleeve , and a hollow space is formed between the inner sleeve and the outer sleeve.

In one embodiment, the hollow space is evacuated or the hollow space is filled with thermal insulation material.

In one embodiment, the thermal insulation material includes inert gas, gel or vacuum insulation board.

In one embodiment, the box of one turnover container can be nested in the box of another turnover container.

In one embodiment, the height of the top surface of the inner sleeve is smaller than the height of the top surface of the outer sleeve.

In one embodiment, a sealing groove is provided on the outer periphery of the lower surface of the box cover, and a sealing member is provided in the sealing groove.

In one embodiment, the sealing groove is arranged around three side edges of the box cover, and the sealing groove is U-shaped.

In one embodiment, the sealing groove is arranged so that when the box cover is closed, the sealing groove faces the top surface of the inner sleeve.

In one embodiment, each of the box lids has two opposite edges, one of which is hinged to the box body. When the box lid is closed, one edge of the box lid is opposite to the edge hinged to the box body. The other edge presses a part of the corresponding edge of the other box cover, thereby limiting the position of the other box cover.

In one embodiment, the shape of the other edge of the box cover opposite to the edge hinged to the box body is tooth-like.

In one embodiment, the first side edge and the second side edge of the top of the box are provided with a plurality of first hinge parts spaced apart from each other, and the first hinge parts have first hinge holes, And an edge of the lid is provided with a plurality of second hinge parts spaced apart from each other, and the second hinge part is provided with a second hinge hole, wherein the hinge shaft passes through the first hinge hole and the second hinge part. The hinge hole, and an end of the edge of the box cover that is hinged to the side edge of the box body are provided with a limiting portion, and the limiting portion is configured to prevent the hinge shaft from escaping from the first hinge hole and the first hinge hole. and a second hinge hole, and the hinge shaft penetrates the first hinge hole and the second hinge hole from the end.

In one embodiment, the limiting portion is a baffle integrally formed in the box cover, and the baffle is facing the second hinge hole.

In one embodiment, the hinge axis is a straight rod.

In one embodiment, one end of the edge of the box cover provided with the limiting portion is provided with a gap, and the gap is provided with a hinge shaft mounting hole connected to the second hinge hole, and the hinge shaft mounting hole is The entrance height is higher than the bottom height of the second hinge hole.

In one embodiment, the turnover container is further provided with a locking mechanism, and the locking mechanism is used to lock the lid on the box body.

In one embodiment, the locking mechanism has a locking piece, the locking piece is installed on the box, the locking piece has a first limiting structure, and a box cover has a second limiting structure, wherein the third limiting structure A limiting structure cooperates with the second limiting structure to lock the box cover on the box body.

In one embodiment, the locking piece is installed in the jacket, the top of the jacket is provided with a cutout, the first limiting structure of the locking piece exposes the cutout, and the lower part of the box cover is integrally formed with a certain As for the second limiting structure, in the locked state, the first limiting structure cooperates with the second limiting structure.

In one embodiment, the first limiting structure is a lock hole located on the top of the locking piece, and the second limiting structure is a locking hook integrally extending from the lower surface of the lid.

In one embodiment, a guide structure is integrally formed on the top of the locking piece, and the guide structure is configured to guide the second limiting structure when the box cover is pressed downward, so that it is in contact with the second limiting structure. The first limiting structure cooperates; and the locking piece further has a reset structure, which is arranged to drive the locking piece to reset when the locking is completed or the unlocking is completed.

In one embodiment, the locking piece has a plate-shaped body, an elastic reset piece is provided on one side of the plate-shaped body, a rotating shaft is provided at the bottom of the plate-shaped body, and an operating part is provided above the rotating shaft. A keyhole is provided on the top of the plate-shaped body, and a guide slope is provided above the keyhole.

The turnover container of this application can be effectively insulated, can not only minimize the space occupied by recycling, but also facilitate the storage of fresh food. It is easy to operate, has no wearing parts or consumables, and the product structure is simple and easy to maintain.

Description of the drawings

FIG. 1 is a perspective view of a turnover container according to an embodiment of the present invention, with parts cut away to illustrate the internal structure.

Figure 2 is an enlarged view of part A in Figure 1, in which the turnover container is in a locked state.

Figure 3 is a state change diagram of part A in Figure 1, in which the turnover container is in an unlocked state.

Figure 4 is a perspective view of the turnover container, partially cut away to show the internal structure.

Figure 5 is a perspective view of the turnover container, in which the outer sleeve and the inner sleeve are separated.

Figure 6 is a perspective view of the turnover container with the lid open.

Figure 7 is a perspective view of the turnover container, partially cut away to show the internal structure.

FIG. 8 is an enlarged view of part B in FIG. 7 .

Figure 9 is an enlarged view of part B in Figure 7 when viewed from another angle, where the view in Figure 9 is a front view.

Fig. 10 is a perspective view of the lid of the turnover container.

FIG. 11 is an enlarged view of part C in FIG. 10 .

Fig. 12 is a perspective view of the box body of the turnover container.

FIG. 13 is an enlarged view of part D in FIG. 12 .

Figure 14 is a perspective view of the locking member of the turnover box.

Fig. 15 is a perspective view of a conventional turnover container.

FIG. 16 is an enlarged view of part F in FIG. 15 .

Fig. 17 is a perspective view of the hinge shaft.

Detailed ways

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the purpose, features and advantages of the present invention can be more clearly understood. It should be understood that the embodiments shown in the drawings do not limit the scope of the present invention, but are only used to illustrate the essential spirit of the technical solution of the present invention.

In the following description, for the purpose of explaining the various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. However, one skilled in the relevant art will recognize that the embodiments may be practiced without one or more of these specific details. In other instances, well-known devices, structures, and techniques associated with the present application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Unless the context requires otherwise, throughout the specification and claims, the word "include" and variations thereof, such as "includes" and "has" are to be understood in an open, inclusive sense, that is, to mean "includes, but not limited to".

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, the appearances of "in one embodiment" or "an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Additionally, specific features, structures, or characteristics may be combined in any manner in one or more embodiments.

As used in this specification and the appended claims, the singular forms "a," "," and "the" include plural referents unless the context clearly dictates otherwise. It should be noted that the term "or" is generally used in its sense including "and/or" unless the context clearly dictates otherwise.

In the following description, in order to clearly demonstrate the structure and working mode of the present invention, many directional words will be used to describe it, but "front", "back", "left", "right", "outside", "inside" should be used for description. "," "outward", "inward", "up", "down" and other words are to be understood as convenient terms and should not be understood as limiting terms.

As shown in Figures 1-5, a turnover container 1 has a box body 2 and two box lids 3 and 4 hinged to the box body. One box cover 3 is hinged to the first side edge of the top of the box body, and the other box cover 4 is hinged to the second side edge of the top of the box body that is opposite to the first side edge. The box 2 has an inner sleeve 5 and an outer sleeve 6. The inner sleeve 5 is placed inside the outer sleeve 6, and a hollow space 7 is formed between the inner sleeve 5 and the outer sleeve 6. The specifications of the turnover container 1 of this application are usually 600×400×360mm, 550×385×270mm, etc.

The hollow space 7 can be evacuated or filled with thermal insulation material (the thermal conductivity is relatively low). For example, the hollow space is evacuated and then sealed. After vacuuming, the hollow space blocks heat convection and heat conduction to achieve the purpose of thermal insulation. Alternatively, the hollow space can be filled with inert gas (argon, krypton, xenon, which has high density and low thermal conductivity). Or, the hollow space can be filled with solid materials with low thermal conductivity, such as gels, vacuum insulation boards and other materials, to block the heat exchange between the ambient temperature inside and outside the box to achieve insulation of the box.

As shown in Figure 5-6, the inner sleeve 5 and the outer sleeve 6 can be formed separately and then assembled together and sealed. The height of the top surface of the inner sleeve 5 is smaller than the height of the top surface of the outer sleeve 6 . As a result, the sealing strip on the box cover can be pressed against the top surface of the inner sleeve,

Both the inner sleeve 5 and the outer sleeve 6 have two pairs of opposite side panels and a bottom panel. The cross-sections of the inner sleeve 5 and the outer sleeve 6 are rectangular. The top of the inner sleeve 5 has an everted edge 8, as shown in Figure 5. During manufacturing, the inner sleeve 5 is first placed inside the outer sleeve 6, and then the inner sleeve is sealingly connected to the outer sleeve along the edge 8. Thereby, a hollow sealed space is formed between the outer sleeve and the inner sleeve. In addition, the bottom surface of the outer cover 6 is reduced relative to the top surface, so that the box body of one turnover container can be nested in the box body of another turnover container.

The bottom surface of the outer cover 6 is provided with positioning grooves 9 . Limiting protrusions 10 are provided on the box covers 3 and 4. When two turnover containers 1 are stacked together, the positioning groove 9 and the positioning protrusion 10 cooperate to limit the position of the turnover container 1 .

As shown in Figures 12-13, the top of the box 2 is provided with a plurality of first hinge parts 11 spaced apart from each other. There is a gap between each two first hinge parts 11, and the gap just accommodates the corresponding second hinge part 15 on the box cover. The first hinge part 11 has a first hinge hole 12 . The first hinge hole 12 is a through hole penetrating the first hinge part 11 . Opening grooves 13 are provided at both ends of the first hinge part 11 and open upward and communicate with the first hinge hole.

As shown in Figure 10-11, each box cover has two opposite edges, one of which is hinged to the box body 2. The edges 14 of the box covers 3 and 4 are provided with a plurality of second hinge portions 15 spaced apart from each other. There is a gap between each two second hinge parts 15, and the gap just accommodates the corresponding first hinge part 11 on the box. The second hinge part 15 is provided with a second hinge hole 16 . The second hinge hole 16 is a through hole penetrating the second hinge part 15 . Opening grooves 17 are provided at both ends of the second hinge part 15 and open upward and communicate with the second hinge hole. During assembly, the hinge shaft 40 passes through the first hinge hole 12 and the second hinge hole 16 . Thereby, the box cover is hinged to the box body. In this article, the hinge axis is a straight rod, which saves time and effort in assembly, which will be further described below.

As shown in Figures 8-9, a limiting portion 18 is provided at one end of the box cover that is hinged to the edge 14 of the box body 2. The limiting portion 18 is configured to prevent the hinge shaft from escaping from the first hinge hole 12 and the second hinge hole 16 . The limiting portion 18 is a baffle integrally formed in the box cover, and the baffle faces the second hinge hole 16 . Furthermore, a notch 19 is provided at one end of the edge of the box cover where the limiting portion 18 is provided. The notch 19 is provided with a hinge shaft mounting hole 20 communicating with the second hinge hole 16 . The entrance height of the hinge shaft mounting hole 20 is higher than the bottom height of the second hinge hole 16 . The second hinge hole 16 is located on one side of the hinge shaft mounting hole 20 , and the limiting portion (baffle) 18 is located on the other side of the hinge shaft mounting hole 20 , facing the second hinge hole 16 . After assembly, the baffle 18 limits the hinge shaft so that it does not accidentally escape from the hinge hole. During assembly, the cover is installed into the hinge shaft mounting holes of the box body and the box cover through the hinge shaft. The hinge shaft is inserted through the hinge shaft mounting hole 20 that is open on one side of the cover. After the tail of the hinge shaft passes through the limiter 18 in the box cover, The tail elastically deforms and recovers and falls into the limiting portion 18, thereby preventing the box cover and its hinge axis from falling easily or preventing disassembly. In addition, due to the provision of the baffle, the hinge axis can be a straight rod, and there is no need to provide a limiting protrusion as in the prior art. This makes assembly very convenient and greatly saves manpower and material resources.

The other edge of the box cover 3 opposite to the edge 14 hinged to the box body is shaped like a tooth and has protruding teeth 22 . The shape of the other edge 23 of the box cover 4 opposite to the edge 14 hinged to the box body is also tooth-like. Moreover, a portion 25 that is concave relative to the convex teeth 24 is formed between the two convex teeth 24 on the edge 23 of the box cover 4 for receiving the corresponding convex teeth 22 of the box cover 3 . When the box lid is closed, the convex teeth 22 on the other edge of one box lid 3 opposite to the edge 14 hinged to the box body press the corresponding edge portion 25 of the other box lid, thereby limiting the other box lid. Bit.

The outer peripheries of the lower surfaces of the box covers 3 and 4 are respectively provided with sealing grooves. The sealing grooves are arranged around the three side edges of the box cover. The shape of the sealing groove is U-shaped. The sealing groove is arranged so that when the box cover is closed, the sealing groove faces the top surface of the inner sleeve 5 . A seal 28 is provided in the seal groove. The seal 28 seals the top of the inner sleeve when the lid is closed.

As shown in Figures 2-3 and 14, the turnover container 1 is further provided with a locking mechanism 50, which is used to lock the lid on the box body. The locking mechanism has a locking piece 29 . The locking piece 29 is installed on the locking piece mounting portion 51 of the box 2 . The locking piece 29 has a first limiting structure, such as a lock hole or a lock hook. A box cover 3 has a second limiting structure, such as a lock hook or a lock hole, where the first limiting structure and the second limiting structure cooperate to lock the box cover on the box body. In the embodiment shown in Figures 2-3, the second limiting structure is a lock hook 37 integrally extended from the lower surface of the box cover 3. The locking hook 37 is located on the edge of the lid.

Specifically, the locking member 29 is installed inside the outer casing 6 . The top of the jacket 6 is provided with a cutout 30 . The first limiting structure of the locking member 29 exposes the cutout 30 . The lower part of the box cover 3 is integrally formed with a second limiting structure. In the locked state, the first limiting structure and the second limiting structure cooperate.

Referring to the embodiment shown in FIG. 14 , the locking member 29 has a plate-shaped body 31 . An elastic reset piece 32 is provided on one side of the plate-shaped body 31 . The elastic reset piece 32 is a reset structure that drives the locking member 29 to reset when locking or unlocking is completed. The bottom of the plate-shaped body 32 is provided with a rotating shaft 33 . The rotating shaft 33 is used to install the locking member on the box 2 . An operating portion 34 is provided above the rotating shaft 33 for the user to perform unlocking operations. The top of the plate-shaped body 31 is provided with a lock hole 35 . Here, the keyhole 35 is the first limiting structure. A guide slope 36 is provided above the keyhole 35 . Here, the guide slope 36 is a guide structure, and the guide structure is configured to guide the second limiting structure (lock hook) when the box cover is pressed downward, so that it cooperates with the first limiting structure (lock hole) to achieve locking. In this embodiment, the locking member 29 is formed integrally.

During assembly, the locking member 29 is installed in the installation cavity 37 in the box, with the rotating shaft 33 located in the lower locking member installation portion 51 . The elastic reset piece 32 abuts against the outer wall of the inner sleeve 5 . The keyhole 35 exposes the cutout 30 . When locking, just press the box cover downward, and the lock hook 37 on the box cover will enter the lock hole 35 under the action of the guide slope to achieve locking. When unlocking, the operating portion 34 is pressed inward, and the plate-shaped body moves inward, thereby causing the lock hole 35 to disengage from the lock hook 37 to achieve unlocking. After unlocking, the locking piece 29 is reset under the action of the elastic reset piece 32 .

In this application, compared with conventional turnover containers of this type, the box body of the turnover container 1 has a double-layer structure, and there is a hollow space between the inner sleeve and the outer sleeve. The hollow space can be evacuated or filled with insulating material, thereby achieving a good thermal insulation effect. Furthermore, a seal is provided on the box cover to further enhance the thermal insulation effect. Furthermore, the turnover container of the present application is equipped with an ingeniously structured locking mechanism, which can firmly lock the lid on the box body, ensuring the reliability of the seal and making locking and unlocking easy. Finally, this application adopts a special hinge structure, and the assembly of the hinge is convenient.

The preferred embodiments of the present invention have been described in detail above, but it will be understood that aspects of the embodiments can be modified if necessary to employ aspects, features and concepts from various patents, applications and publications to provide additional embodiments.

These and other changes can be made to the embodiments in view of the above detailed description. In general, in the claims, the terms used should not be construed as limiting to the specific embodiments disclosed in the specification and claims, but should be understood to include all possible embodiments together with all equivalents to which such claims are entitled. scope.

Claims (23)

1. A turnover container having a case body and two case covers hinged to the case body, one of the case covers being hinged to a first side edge of a top of the case body and the other case cover being hinged to a second side edge opposite to the first side edge of the top of the case body, characterized in that the case body has an inner case and an outer case, the inner case being sleeved in the outer case, and a hollow space being formed between the inner case and the outer case;

the first side edge and the second side edge of the top of the case are provided with a plurality of first hinge parts spaced apart from each other, the first hinge parts have first hinge holes, and one edge of the case cover is provided with a plurality of second hinge parts spaced apart from each other, the second hinge parts are provided with second hinge holes, wherein a hinge shaft passes through the first hinge holes and the second hinge holes, and one end of the edge of the case cover hinged to the side edge of the case is provided with a limit part, the end of the edge of the case cover provided with the limit part is provided with a notch provided with a hinge shaft mounting hole communicated with the second hinge holes, the entrance height of the hinge shaft mounting hole is higher than the bottom surface height of the second hinge holes, the hinge shaft is an elastic member, the limit part is arranged such that the tail of the hinge shaft is elastically deformed and falls into the limit part after passing over the limit part, and the hinge shaft passes through the first hinge hole and the second hinge hole from the end.

2. The epicyclic container according to claim 1, wherein the hollow space is evacuated or is filled with a heat insulating material.

3. The epicyclic container according to claim 1, wherein the height of the top surface of said inner sleeve is less than the height of the top surface of said outer sleeve.

4. The turnover container of claim 1, wherein a sealing groove is provided at the outer periphery of the lower surface of said case cover, and a sealing member is provided in said sealing groove.

5. The epicyclic container of claim 4, wherein said seal grooves are arranged around three side edges of said cover, said seal grooves being U-shaped in shape.

6. The container of claim 1, wherein each of said flaps has opposite edges, one of which is hinged to said case, and wherein the other edge of one flap opposite the edge hinged to said case is pressed against a portion of the corresponding edge of the other flap when said flaps are closed, thereby restraining the other flap.

7. The container of claim 1, wherein the stop is a flap integrally formed in the lid, the flap facing the second hinge eyes.

8. The transfer container of claim 1, further provided with a locking mechanism for locking the lid to the case.

9. The epicyclic container of claim 8, wherein said locking mechanism has a locking member mounted on said housing, said locking member having a first limit structure, a cover having a second limit structure, wherein said first limit structure and said second limit structure cooperate to lock said cover to said housing.

10. The container according to claim 9, wherein the locking member is installed in the outer sleeve, a cutout is provided at a top of the outer sleeve, the first limit structure of the locking member is exposed out of the cutout, the second limit structure is integrally formed at a lower portion of the cover, and the first limit structure and the second limit structure are engaged in a locked state.

11. The container according to claim 9, wherein the top of the locking member is integrally formed with a guide structure arranged to guide the second limit structure so as to cooperate with the first limit structure when the lid is pressed down; and the locking member further has a reset structure arranged to actuate the locking member to reset upon completion of locking or unlocking.

12. The container according to claim 9, wherein the locking member has a plate-like body, one side of the plate-like body is provided with an elastic return piece, a bottom of the plate-like body is provided with a rotating shaft, an operating portion is provided above the rotating shaft, a top of the plate-like body is provided with a lock hole, and a guide slope is provided above the lock hole.

13. The transfer container of claim 1, wherein the container body of one transfer container is nestable with the container body of another transfer container.

14. A turnover container, the turnover container has a box body and a box cover hinged to the box body, wherein the box cover is hinged to the edge of the top of the box body, the turnover container is characterized in that the box body is provided with an inner sleeve and an outer sleeve, the inner sleeve is sleeved in the outer sleeve, and a hollow space is formed between the inner sleeve and the outer sleeve;

the edge at the top of box is equipped with a plurality of first articulated portions that are spaced apart each other, first articulated portion has first hinge hole, and the edge of case lid is equipped with a plurality of second articulated portions that are spaced apart each other, the second articulated portion is equipped with the second hinge hole, wherein the hinge pin passes first hinge hole and second hinge hole, and the end of the edge of case lid articulated in the top of box is equipped with spacing portion, the end of edge of case lid that is equipped with spacing portion is equipped with a breach, this breach is equipped with the hinge pin mounting hole of second hinge hole intercommunication, the entry height of hinge pin mounting hole is higher than the bottom surface height of second hinge hole, the spacing portion sets up after the afterbody of hinge pin passes spacing portion, the afterbody elastic deformation of hinge pin recovers and falls into within the spacing portion, and the hinge pin passes first hinge hole and second hinge hole from this end.

15. The epicyclic container according to claim 14, wherein the hollow space is evacuated or is filled with a heat insulating material.

16. The epicyclic container according to claim 14, wherein the height of the top surface of said inner housing is less than the height of the top surface of said outer housing.

17. The turnover container of claim 14, wherein a sealing groove is provided at the outer circumference of the lower surface of the case cover, and a sealing member is provided in the sealing groove.

18. The transfer container of claim 14, further comprising a locking mechanism for locking the lid to the case.

19. The epicyclic container of claim 18, wherein said locking mechanism has a locking member mounted on said housing, said locking member having a first limit structure, a cover having a second limit structure, wherein said first limit structure and said second limit structure cooperate to lock said cover to said housing.

20. The container according to claim 19, wherein the locking member is mounted in the outer sleeve, a cutout is provided at a top of the outer sleeve, the first limit structure of the locking member is exposed out of the cutout, the second limit structure is integrally formed at a lower portion of the cover, and the first limit structure and the second limit structure are engaged in a locked state.

21. The epicyclic container according to claim 19, wherein a guiding structure is integrally formed at the top of said locking member, said guiding structure being arranged to guide said second limit structure so that it cooperates with said first limit structure when said cover is pressed down; and the locking member further has a reset structure arranged to actuate the locking member to reset upon completion of locking or unlocking.

22. The container according to claim 19, wherein the locking member has a plate-like body, one side of the plate-like body is provided with an elastic return piece, a bottom of the plate-like body is provided with a rotation shaft, an operation portion is provided above the rotation shaft, a top of the plate-like body is provided with a lock hole, and a guide slope is provided above the lock hole.

23. The transfer container of claim 14, wherein the container body of one transfer container is nestable with the container body of another transfer container.