CN111846650A

CN111846650A - Foldable container

Info

Publication number: CN111846650A
Application number: CN201910350787.7A
Authority: CN
Inventors: 孙延安
Original assignee: Suzhou Alsco Supply Chain Management Co ltd
Current assignee: Suzhou Alsco Supply Chain Management Co ltd
Priority date: 2019-04-28
Filing date: 2019-04-28
Publication date: 2020-10-30
Also published as: WO2020220907A1

Abstract

The invention discloses a foldable container, which comprises a container top, a container bottom, side walls and an end door, wherein the container bottom is provided with an accommodating part for accommodating the end door, the container top and the container bottom are respectively hinged with the side walls to form a loading and unloading space, and the end door can be completely opened to form a loading and unloading opening; the container bottom includes bottom panel and bottom frame, the portion of acceping sets up under the bottom panel, and when the container was the rugosity, left side wall and right side wall inwards folded respectively and acceped between roof and bottom of the case, and the end door accept in the portion of acceping, the container still including be used for locking lateral wall and lower lateral wall make keep not taking place relative motion's lateral wall locking mechanism in the coplanar and be used for carrying out the end door locking mechanism of locking with end door and lateral wall when the end door is perpendicular to bottom of the case and lateral wall simultaneously. The container can be folded and unfolded by two persons, the container can be folded and unfolded quickly, and the end door is accommodated at the bottom of the container during loading and unloading, so that the loading and unloading are convenient.

Description

Foldable container

Technical Field

The invention relates to the field of logistics transportation, in particular to a foldable container.

Background

Due to differences in regional economic development, there is a serious imbalance in international trade and maritime traffic worldwide, with asian, north american and asian routes behaving particularly prominently. This imbalance causes a large number of empty boxes to circulate around the world. In the 70's of the 20 th century, Sea Container and Fallpac AB and Brasco Technik introduced collapsible containers in tandem, but all stopped at the prototype or in small series and were not in widespread use. According to the statistics of European Union, more than 20 percent of global shipping containers are empty containers and about 40 percent of global shipping containers are empty containers between 2005 and 2009, according to the investigation of relevant companies, the idle time and the dispatching time of the empty containers account for about 56 percent in the using process of the containers, and in order to solve the problem of dispatching the empty containers, the shipping companies have to consume a large amount of manpower and material resources; the cost of global shipping companies for air-box distribution in 2008 is up to about $ 330 million. To reduce the increased costs associated with empty containers left unused and shipped, the industry has begun to develop collapsible containers.

The SIO Container is a 20 foot collapsible dry Container developed by SIO Container, switzerland consisting of 7 detachable parts, the empty Container mass of which is heavier than that of a normal Container, and the stack volume of 6 containers after detachment is equivalent to the volume of one normal Container. Except that door end part passes through hinged joint, other parts all rely on locking mechanical system fixed, are dismantled and are expanded by 3 operating personnel under a fork truck or the cooperation of assistance-localization real-time frock.

The folding method of the Fallpac container is that firstly the top plate is disassembled, then the short plate and the side plate are folded towards the direction of the bottom plate, finally the top plate is covered, 2 workers fold or unfold under the cooperation of one forklift, the Fallpac container is mainly applied to railway transportation, although obvious technical problems or serious design defects are not found, the transportation and hoisting efficiency is low due to the fact that the empty container is heavy, and the Fallpac container is difficult to popularize and apply.

The Cargoshell container is made of composite materials, the weight of an empty container is 25% lighter than that of an European-Union container, electronic signals are not interfered by the container body, and the Cargoshell container is beneficial to installation of electronic equipment such as a global positioning system and the like in the container. CO in the production process₂The discharge amount is only CO in the production process of the common container ₂1/3 for discharge. The box need not to spray paint, can effectively reduce the environmental pollution because of spraying paint and causing, and the box is insulating and corrosion-resistant, and the maintenance cost is lower, and height after folding only is 1/4 of height under the expansion state. The design of the door is changed from the original rolling door to a double-door structure as the common container. When the folding and unfolding operation is carried out, the lifting can be carried out from the middle part of the top plate of the container at a single point, so that the bending deformation of the top plate is avoided.

The Foltainer container is also a 20 foot collapsed dry cargo container, the collapsed height being 1/3 in the expanded position. The Foltainer container is similar to the Cargoshell container, the side plates of the Foltainer container and the Cargoshell container are folded inwards in an X shape, the difference is that the front end part and the rear end part of the Foltainer container are folded inwards around a threshold or two hinges below the front end part, and the bottom of the Foltainer container is provided with a spring, so that the impact force in the folding and unfolding processes can be reduced. When the Foltainer container is folded, the outer upright post of the outer door frame is folded along with the side plate, the inner upright post of the inner door frame is folded along with the door plate component, and after the box body is unfolded, the upper lintel beam of the outer door frame is connected with the lower lintel beam of the inner door frame by the small locking rod, so that the inner door frame and the outer door frame are connected together. In addition, the door section hinge adopts a special design, two rows of hinges are arranged on a single door leaf, and the 2 rows of hinges are connected through a connecting plate, so that the door leaf can turn over around two sets of turning shafts, and the opening angle can reach 270 degrees.

In conclusion, the existing foldable container has scattered components and a complex structure, and when the container is folded and unfolded, the operation can be completed by the assistance of large-scale machinery besides manpower, and meanwhile, a large space is needed, and the operation flexibility is greatly limited.

Disclosure of Invention

The invention aims to provide a unitized foldable container which has a simple structure and can be operated by manpower without using a machine.

The invention adopts the technical scheme that the foldable container comprises a container top, a container bottom, two oppositely arranged side walls and two oppositely arranged end doors, wherein an accommodating part for accommodating the end doors is arranged on the container bottom; the bottom of the case includes bottom of the case panel and bottom of the case frame, the portion of acceping sets up under the bottom of the case panel, and wherein the lateral wall includes left side wall and right side wall, and left side wall and right side wall all include upper and lower articulated lateral wall and lower lateral wall, and the end door includes front end door and rear end door, and front end door and rear end door all include upper and lower articulated end door and lower end door, and when the container was the ruggedness, left side wall and right side wall inwards fold respectively and accept between roof and the bottom of the case, and the end door accept in the portion of acceping, the container still including be used for locking upper and lower lateral wall to make keep not taking place relative motion's lateral wall locking mechanism in the coplanar and be used for carrying out the end door and the lateral wall end door locking mechanism of locking when the end door is perpendicular to bottom of the case and lateral wall.

Furthermore, the foldable container of the invention, the accommodating part comprises a supporting part fixedly connected with the bottom frame of the container, the left side and the right side of the supporting part are provided with slide ways, the left side and the right side of the end door are fixedly provided with slide blocks near the lower ends, the slide blocks are fixedly connected with the end door through fixed shafts, the end door moves along the slide ways through the slide blocks, the end part of the slide ways is provided with limiting grooves for limiting the slide blocks to slide, the groove bottoms of the limiting grooves are lower than the slide ways, the inner side groove walls of the limiting grooves are in smooth transition with the slide ways, the end door moves along the slide ways through the slide blocks, and the end door is limited in the limiting grooves through the slide blocks to turn around the slide blocks.

Furthermore, the limit groove is C-shaped, the sliding block comprises a cylindrical roller and a fixed shaft arranged at the bottom end of the side wall close to the end door, and the roller can rotate relative to the fixed shaft.

Furthermore, the slide way is provided with a group, the two ends of the slide way are provided with limit grooves, and the upper end door and the lower end door move along the slide way after being folded, so that the front end door and the rear end door are respectively accommodated in the front end and the rear end of the accommodating part.

Further, the foldable container of the invention, the end door locking mechanism includes a movable latch arranged on the end door, a latch hole arranged on the side wall and a limit hole arranged on the end door for limiting the movable latch, the movable latch includes a latch inserting part and a handle part, the latch inserting part can rotate around the limit hole perpendicular to the end door under the driving of the handle part, the latch inserting part is L-shaped, the latch hole is correspondingly provided with a horizontal hole and a vertical hole, the width of the horizontal hole and the depth of the vertical hole are matched with the width of the movable latch, the latch inserting part is inserted into the horizontal hole of the latch hole, and after the latch inserting part is rotated in place, the vertical section of the latch inserting part enters the vertical hole and is in place, so as to limit the movable latch in the latch hole for locking.

Further, the collapsible container of the invention, the end door comprises an end door panel and an end door frame, the side wall comprises a side wall panel and a side wall frame, the limiting hole is arranged on the end door panel through the mounting bottom plate, the latch hole is arranged on the side wall frame, and the movable latch is arranged on the end door frame in a penetrating way and rotates around the limiting hole and perpendicular to the end door.

Further, the collapsible container of the present invention is provided with a locking portion for positioning the latch when the latch is in place on the mounting base.

Further, the collapsible container of the present invention, the end door comprises an end door panel and an end door frame, the side wall comprises a side wall panel and a side wall frame, the locking mechanism comprises a first end door auxiliary locking mechanism which is used for positioning and auxiliary locking the end door and the side wall before the end door locking mechanism is locked, the first end door auxiliary locking mechanism comprises first bulges which horizontally protrude outwards and are arranged at the left side and the right side of the end door frame, first grooves which are horizontally arranged at the front side and the rear side of the side wall frame and vertical grooves which are communicated with the first grooves, the height difference between the first protrusion and the topmost end of the end door frame is greater than the height difference between the first groove and the topmost end of the side wall frame, the height difference between the first protrusion and the topmost end of the end door frame is equal to or smaller than the height difference between the topmost end of the vertical groove and the topmost end of the side wall frame.

Further, the end door of the foldable container comprises an end door panel and an end door frame, the side wall comprises a side wall panel and a side wall frame, the locking mechanism comprises a second end door auxiliary locking mechanism which is used for positioning and auxiliary locking the end door and the side wall before the end door locking mechanism locks, the second end door auxiliary locking mechanism comprises a plurality of second bulges which horizontally protrude outwards and are arranged on the left side and the right side of the end door frame, and a plurality of second grooves which horizontally are arranged on the front side and the rear side of the side wall frame, and the height difference between the second bulges and the topmost end of the end door frame is equal to the height difference between the second grooves and the topmost end of the side ledge.

Further, according to the foldable container of the present invention, the side wall locking mechanism includes a first fixing block and a second fixing block respectively disposed on the upper side wall and the lower side wall, the first fixing block and the second fixing block are disposed in a staggered manner, the lower side wall is further provided with an accommodating space for accommodating the first fixing block, the first fixing block and the second fixing block are correspondingly provided with a first pin hole and a second pin hole, the pin shaft is movably disposed in the second pin hole, the pin shaft is fixedly connected to a handle disposed on an outer side of the second fixing block, the upper side wall and the lower side wall are rotated relatively to an extended position through a hinge, the handle is the pin shaft to exit from the first pin hole, the first fixing block is continuously extended to accommodate the upper side wall and the lower side wall in the accommodating space, and the pin shaft is released to extend into the first pin hole to lock the upper side wall and the lower side wall .

Has the advantages that: the foldable container can be folded and unfolded by two persons, the container does not need to be disassembled and can be quickly folded, the end door can be completely opened and accommodated in the bottom of the container during loading and unloading, and the loading and unloading are convenient. The end door can be accommodated in the accommodating structure when goods are loaded and unloaded; and the end door is enabled not to be separated from the container to be turned over in the folding process through the limiting groove of the accommodating structure and the fixed shaft and the roller of the end door, so that the operation is easy and convenient. And the loading and unloading space can be unfolded only during loading and unloading so that the end door can be completely opened to form a loading and unloading opening, thereby reducing operation obstacles, leading the loading and unloading operation to be carried out in a multi-directional and flexible way and improving the loading and unloading efficiency. Furthermore, the end door and the side wall are all foldable, so that the requirement on an operation site is further reduced, and the operation is more flexible. End door locking mechanism, the equal one-hand locking operation that can all be carried out to the auxiliary locking mechanism of first end door and lateral wall locking mechanism, through the auxiliary locking mechanism of first end door, but expand the in-process quick location at the end door, alleviate the manpower, can further carry out and fix the end door through second end door locking mechanism, can one-hand completion end door locking mechanism's operation without the people holding up, can labour saving and time saving, convenient and fast ground is accomplished foldingly and is expanded, carry out size design according to current trailer or boxcar, folding back volume of acceping reaches 1/6 before folding even below.

Drawings

Fig. 1 is a schematic view of a fully unfolded collapsible container according to the present invention.

The figure is a schematic view of the collapsible container of the present invention during deployment.

FIG. 3 is a schematic view of the collapsible container of the present invention in a collapsed state

Figure 4 is a schematic view of the collapsible container of the present invention during deployment (end doors not shown).

Fig. 5 is a schematic structural view of the collapsible container of the present invention during deployment (with the end doors in a stowed position).

Fig. 6 is a partially enlarged view of the receiving structure of the collapsible container of fig. 5.

Fig. 7 is a schematic view of the structure of the base frame of the collapsible container of the present invention.

Fig. 8 is a schematic view of the structure of the base frame of the collapsible container of the present invention.

Fig. 9 is a schematic view of the first end-door auxiliary locking mechanism of the collapsible container of fig. 2.

Fig. 10 is a partially enlarged view of the receiving structure of the collapsible container of fig. 8.

Fig. 11 is a schematic structural view of a chute of a collapsible container of the present invention.

Fig. 12 is an enlarged partial view of the end of the chute of the collapsible container of the present invention of fig. 11.

Fig. 13 is a schematic view of the cooperating relationship of the chute and roller assemblies of the collapsible container of the present invention.

Fig. 14 is a schematic structural view of an end door of the collapsible container of the present invention.

Fig. 15 is a schematic view of the locking mechanism of the collapsible container of fig. 14 in an extended state.

Fig. 16 is a schematic view of the locking mechanism of the collapsible container of fig. 14 in a retracted state.

Fig. 17 is a schematic view of the locking mechanism of the collapsible container of the present invention.

Fig. 18 is a schematic view showing the structure of the roller assemblies of the collapsible container of fig. 14 according to the present invention.

Fig. 19 is an enlarged view of a portion of the side wall locking mechanism of the collapsible container of the present invention.

Fig. 20 is a schematic structural view of a side wall locking mechanism of a collapsible container of the present invention.

Fig. 21 is a schematic structural view of the side wall locking mechanism of the collapsible container of fig. 20 in longitudinal section along the axis of the pin shaft (the handle is not shown).

Fig. 22 is a schematic view of the structure of the underframe hinge of the collapsible container of the invention.

Fig. 23 is a schematic view showing the structure of the waterproof hinge (underframe hinge) of the collapsible container according to the present invention, in which the horizontal portions of the first hinge part and the second hinge part are unfolded at 90 °.

Fig. 24 is a schematic view showing the structure of the folded state of the first hinge part and the horizontal part of the second hinge part of the underframe hinge (underframe hinge) of the collapsible container of the present invention.

Fig. 25, 24 are schematic longitudinal sectional views of the folded state of the first hinge part and the horizontal part of the second hinge part of the foldable container underframe hinge (underframe hinge) according to the invention.

Reference numerals:

1. a container;

10. a box top; 101. stacking angles; 102. a box top hinge; 103. a roof frame; 104. a roof panel;

20. the box bottom; 201. a box bottom panel; 202. the box bottom frame 2021, the supporting frame 20211, the supporting part 2022, the slideway 20221, the slideway supporting part 20222, the slideway limiting part 20223, the limiting groove 2023, the first limiting part 2024, the fork hole 2025 and the notch; 203. a box bottom hinge, 2031, a first hinge part, 2032, a second hinge part, 20311, a first clamping part, 203111, a clamping groove, 20321, a second clamping part, 203211, a clamping protrusion, 20312, a first horizontal fixing part, 20313, a first vertical protrusion, 20314, a first vertical connecting part, 20322, a second horizontal fixing part, 20323, a second vertical protrusion, 20324, a second vertical connecting part;

30. a side wall; 301. an upper sidewall; 302. a lower sidewall; 303, a side wall hinge; 304, a side wall locking mechanism 3041, a first fixing block 3042, a second fixing block 3043, a first pin hole 3044, a second pin hole 3045, a pin shaft 30451, a handle mounting hole 3046 and a handle; 305. a sidewall frame 306, sidewall panels; 307. a first groove; 308. a second groove; 309. a second limiting part;

40. An end door; 401. an upper end door; 402. a lower end door; 403. End door locking mechanism 4031, movable bolt 40311, bolt insert 40312, bolt insert extension 40313, connecting portion 4032, bolt hole 4033, limiting hole 4034, handle portion; 404. the roller component 4041, the roller, 4042, the fixed shaft, 4043 and the limiting wheel; 405. end door hinge, 406, first boss, 407, second boss; 408. end door panel 409, end door frame.

Detailed Description

The following detailed description of the preferred embodiments of the collapsible container 1 of the present invention is provided in conjunction with the accompanying drawings of the specification, however, the present invention may have other embodiments in addition to the detailed description.

As shown in fig. 1-25, the technical solution adopted by the present invention is that, a foldable container 1 comprises a roof 10, a bottom 20, two opposite side walls 30 and two opposite end doors 40, wherein the bottom 20 is provided with an accommodating portion for accommodating the end doors 40, the roof 10 and the bottom 20 are respectively hinged with the upper ends and the lower ends of the side walls 30 to form a loading and unloading space, and the end doors 40 can be completely opened and accommodated in the accommodating portion to form a loading and unloading opening; the container bottom 20 comprises a container bottom panel 201 and a container bottom frame 202, the accommodating part is arranged below the container bottom panel 201, wherein the side wall 30 comprises a left side wall and a right side wall, the left side wall and the right side wall both comprise an upper side wall 301 and a lower side wall 302 which are hinged up and down, the end door 40 comprises a front end door and a rear end door, the front end door and the rear end door both comprise an upper end door 401 and a lower end door 402 which are hinged up and down, when the container 1 is folded, the left side wall and the right side wall are respectively folded inwards and accommodated between the container top 10 and the container bottom 20, the end door 40 is accommodated in the accommodating part, the container 1 further comprises a side wall locking mechanism 304 for locking the upper side wall 301 and the lower side wall 302 to keep in the same plane without relative movement and an end door locking mechanism 403 for locking the end door 40 and the side wall 30 when the end door 40 is perpendicular to the container bottom 20 and the side wall 30.

Wherein the box top 10 includes a box top panel 104 and a box top frame 103, the side walls 30 include side wall panels 306 and side wall frames 305, and the end door 40 includes an end door panel 408 and an end door frame 409.

In order to further reduce the manpower during manual operation and facilitate manual operation of the foldable container 1, the top panel 104, the side wall panel 306 and the end door panel 408 are made of glass fiber cellular boards, and the bottom panel 201 is made of glass fiber cellular boards with patterns attached to aluminum plates; the box top frame 103, the side wall frame 305 and the end door frame 409 are all made of aluminum alloy materials; the box bottom frame 202 is made of steel. The container 1 has light weight and strength, and is convenient for manual operation and use.

Simultaneously be provided with standard fork hole 2024 on the bottom of the case frame 202 for remove container 1 around loading and unloading, further, container 1 still is provided with and is used for carrying out the location structure of superpose after folding, location structure including set up in stack angle 101 on the roof 10 with set up in superpose shrinkage pool on the bottom of the case 20 avoids the container 1 after the superpose to slide each other. Meanwhile, preferably, four corners or diagonal corners of the box bottom frame 202 protrude from the box bottom panel 201 to form first limiting portions 2023, the first limiting portions 2023 are disposed on the outer side of the box bottom panel 201, and the height of the first limiting portions 2023 protruding from the box bottom panel 201 is less than or equal to the sum of the thickness of the box top 10 and the thickness of the folded left side wall 30. For limiting the outward turning of the lower side wall 302 when the side wall 30 is unfolded, and for properly limiting the folding structure on the bottom panel 201 when the container 1 is in a folded state. The lower sidewall 302 may also be provided with a second limiting portion 309, and the second limiting portion 309 is disposed outside the accommodating space and is used for limiting the upper sidewall 301 from turning outwards when being unfolded.

Preferably, the height of the end door 40 is greater than the height of the side wall 30 and less than the length of the side wall 30. More specifically, the height of the lower end door 402 is greater than that of the upper end door 401, the end door 40 includes an extension section located below the lowest end of the side wall 30, the extension section is located below the upper surface of the box bottom panel 201, the extension section is a part of the end door frame 409 of the lower end door 402, and an opening corresponding to the fork hole 2024 is provided on the extension section.

More preferably, the side walls 30 have a length, width and height matching the length, width and height of the carrying part of the transportation device or the container 1, the height of the end door 40 is less than the length of the side walls 30, the height of the bottom 20 of the container is between 1/9 and 1/8 of the height of the container 1, and the height of the container 1 in the folded state is between 1/6 and 1/7 of the height of the container 1 after the container 1 is unfolded. Most preferably, the side walls 30 have a length, width and height matching the length, width and height of the carrier or container 1 of the transportation device, and can be made into a manually operable unitized container 1 size, and can be placed side by side or individually in the length or width direction of the carrier or container 1, the height of the end doors 40 is smaller than the length of the side walls 30, the height of the bottom 20 of the container is between 1/9 and 1/8 of the height of the container 1, and the height of the container 1 in the folded state is between 1/6 and 1/7 of the height of the container 1 after the container 1 is completely unfolded.

More preferably, the length, width and height of the container 1 are suitable for the width dimension of the trailer, the outer dimensions of the folding box are 2200 mm, 2550 mm and 2400 mm, the height of the box bottom 20 is 400 mm, the thickness of the box top 10, the side wall 30 and the end door 40 is 45-55 mm, and the folding box is folded to be 400 mm. Specifically, the length, width and height of the container 1 are suitable for the width of a trailer, the length, width and height of the external dimension of the folding box are 2200 mm, 2550 mm and 2400 mm respectively, the height of the box bottom 20 is 400 mm, the thickness of the box top 10, the side wall 30 and the end door 40 is 45-55 mm, the thickness of the box top panel 104, the thickness of the side wall panel 306 and the thickness of the end door panel 408 are 15-25 mm, and the folding box is folded to 350 mm and 400 mm.

The receiving portion, i.e., the end door receiving structure for receiving the end door 40, is disposed on the box bottom 20, and the receiving portion is disposed below the box bottom panel 201. The accommodating part comprises a support 2021 fixedly connected with the box bottom frame 202, slide ways 2022 are arranged on the left side and the right side of the support 2021, and the end door 40 moves inwards along the slide ways 2022 and is accommodated in the accommodating part. The supporting portion 20211 is disposed at an end of the supporting frame 2021 close to the sliding way 2022, and the supporting portion 20211 also helps to make the bottom of the end door 40 supported more stably to avoid shaking after the end door 40 is locked with the side wall 30, and a distance between the supporting portion 20211 and the center of the limiting groove 20223 is greater than a distance between the supporting portion 20211 and the center of the limiting groove 20223, so as to avoid interference when the bottom of the end door 40 rotates.

Preferably, when the end door 40 needs to be limited to be turned without departing from the box bottom 20, the limitation can be described as that the left side and the right side of the end door 40 are fixedly provided with a limiting block assembly or a limiting block at the position close to the bottom end of the side wall 30 of the end door 40; when it is needed to describe that the end door 40 slides smoothly in the accommodating portion, it can be described that the left and right sides of the end door 40 are fixedly provided with a slider assembly or a slider, a roller assembly or a spherical roller, or a roller assembly or a cylindrical roller at a position close to the bottom end of the side wall 30 of the end door 40; it is desirable to describe the roller assembly or the roller, or the roller assembly or the cylindrical roller, in order to facilitate the smooth sliding of the end door 40 in the receiving portion while restricting the end door 40 from being separated from the case bottom 20 and enabling the end door 40 to be more smoothly turned without being separated from the case bottom 20. According to different description scenes, corresponding description can be alternatively and correspondingly performed. Compared with the most preferable cylindrical roller, the roller has the same installation position, and the difference is that the realized functions are the same or partially the same, and the movement forms or the movement effects of the realized functions are poorer under different scenes.

For example, the sliding block is fixedly connected to the end gate 40 through a fixed shaft 4042, the sliding block is disposed on the sliding way 2022, and the end gate 40 moves along the sliding way 2022 through the sliding block. The slider is helpful to conveniently move on the slide way, and the slider can rotate in the limit groove 20223 and is also equivalent to a limit block as long as the limit groove 20223 can limit the slider not to depart from the box bottom 20 and enough space is provided in the limit groove 20223 for the slider to drive the end door 40 to turn. Therefore, the limiting component and the sliding block component can realize the function of the roller component according to the invention, and only the effect is poor.

Furthermore, in order to realize the folding and storage of the end door 40 and the overturning and unfolding of the end door 40 without departing from the box bottom 20, in the preferred end door overturning and storing structure of the present invention, the end of the slide way 2022 is provided with a limiting groove 20223 for limiting the sliding of the sliding block, the groove bottom of the limiting groove 20223 is lower than the slide way 2022, the inner side groove wall of the limiting groove 20223 is in smooth transition with the slide way 2022, the end door 40 moves along the slide way 2022 through the sliding block, and the end door 40 is limited in the limiting groove 20223 through the sliding block to overturn around the sliding block between the horizontal position and the vertical position. The end of the slide way 2022 is provided with a limit groove 20223 for limiting an end door 40, the bottom of the limit groove 20223 is lower than the slide way 2022, the end door 40 at the opening side of the limit groove 20223 is in smooth transition with the slide way 2022, the end door 40 at the other side of the limit groove 20223 is higher than the slide way 2022, when the container 1 is unfolded, the end door 40 is limited in the limit groove 20223 and is not separated from the bottom 20 of the container, and the end door 40 is turned over to a position from a horizontal position to a vertical position around the slide block.

Preferably, the limiting groove 20223 and the sliding rail 2022 are disposed on the bottom frame 202, and when the end door 40 is perpendicular to the bottom 20, the end door frame 409 is located between the side wall frames 305.

Of course, in a preferred embodiment, the slide ways 2022 may also be arranged in two sets in parallel, two sets of slide ways 2022 are arranged in parallel up and down in the accommodating portion, and the front end door and the rear end door are arranged in parallel up and down in the accommodating portion. The front end door and the rear end door can also be in an integral or folding form and are directly accommodated in the accommodating part. However, this results in a large operating space required for the unfolding and folding of the front and rear doors, wherein the folding type relatively reduces the operating space, and a gap between the two runners 2022 is required to avoid the interference of the front and rear doors. The folded height dimension of the collapsible container 1 is increased. Furthermore, the two sliding ways 2022 are provided with a limiting groove 20223 only at one end, but accordingly, the heights of the two end doors 40, particularly the height of the end door frame 409, are different.

In another preferred embodiment, the end door 40 includes a front end door and a rear end door disposed at two ends of the box bottom 20, the front end door and the rear end door both include an upper end door 401 and a lower end door 402 hinged to each other, a set of slide ways 2022 is disposed in the accommodating portion, the front end door and the rear end door move inward after being folded by the upper end door 401 and the lower end door 402 and are accommodated in the accommodating portion, and the upper end door 401 and the lower end door 402 move along the slide ways 2022 after being folded, so that the front end door and the rear end door are respectively accommodated at the front end and the rear end of the accommodating portion. Compared with the other two embodiments, the optimal embodiment has the advantages that the operation space of the front end door and the rear end door is smaller, the height of the foldable container 1 after being folded is lower, and the folding effect is better.

The slider assembly or slider here needs to simultaneously slide on the slide 2022 and limit within the limit groove 20223 and rotate the end door 40 relative to the case bottom 20. When the end door 40 needs to be unfolded, the end door 40 is pulled out from the accommodating portion, so that the limiting block assembly is arranged in the limiting groove 20223, the end door 40 rotates around the fixed shaft 4042 along with the limiting block and is turned over relative to the box bottom 20 to be perpendicular to the box bottom 20, and when the end door 40 needs to be accommodated, the limiting block assembly is separated from the limiting groove 20223.

In one preferred embodiment, the limiting block is a spherical roller, and the center of the spherical roller rotates freely. In a preferred embodiment, the limiting block is a spherical roller, and is arranged on the fixed shaft, and the spherical roller freely rotates around a point on the fixed shaft.

In a preferred embodiment, the stopper is a cylindrical roller 4041, and is disposed on the fixed shaft 4042, and the roller 4041 rotates around the fixed shaft 4042. The cylindrical roller 4041 includes a first wall and a second wall that are symmetrically arranged, the middle parts of the first wall and the second wall are connected through a roller 4041 supporting wall, the roller 4041 supporting wall encloses a shaft hole for placing the fixed shaft 4042, the outer surface of the roller 4041 supporting wall is arranged on the slideway supporting portion 20221, the slideway limiting portion 20222 and the slideway supporting portion 20221 are oppositely arranged, the roller 4041 is limited to prevent the roller 4041 from separating from the slideway 2022, and a sufficient first gap is left between the roller 4041 supporting wall and the slideway supporting portion to prevent movement interference. The outside of gyro wheel 4041 be provided with gyro wheel 4041 sets up coaxially in spacing wheel 4043 on the fixed axle 4042, slide supporting part 20221 with the spacing portion 20222 of slide with the slide 2022 is close to be provided with the second clearance between the lateral wall of the bottom of the case outside, the clearance is used for holding spacing wheel 4043. More specifically, the slide ways 2022 of the position-limiting groove 20223 are butted, and the position-limiting groove 20223 further includes a position-limiting wheel 4043 receiving portion for supporting and receiving the position-limiting wheel 4043. A limiting structure for limiting the rotation of the roller 4041 is arranged in the second gap near the limiting groove 20223, and the limiting structure may be a part of the supporting frame 2021. After the limiting wheel 4043 of the roller 4041 falls into the limiting groove 20223, the roller 4041 is fixed, and the end door 40 turns around the axis of the fixed shaft 4042 following the fixed shaft 4042. Corresponding to the most preferred embodiment, the limiting groove 20223 is a C-shaped groove, the bottom of the C-shaped groove is lower than the slide 2022, the inner side wall of the C-shaped groove is in smooth transition with the slide 2022, and when the container 1 needs to be folded, the limiting block is separated from the limiting groove 20223 and is accommodated in the accommodating portion along the slide 2022. Of course, if the limiting blocks in other embodiments are implemented in a manner that can be learned according to the present invention, the limiting blocks can be considered to fall within the protection scope of the present invention. The cross section of the slide 2022 perpendicular to the length direction of the slide 2022 is C-shaped, and the cross section of the limit groove 20223 parallel to the length direction of the slide 2022 is C-shaped. One side of the C-shaped groove close to the end door 40 is in smooth transition with the slide 2022, and the limiting structure is arranged between the second gap of the limiting groove 20223 and the slide 2022.

Preferably, the groove bottom of the limiting groove 20223 is spaced from the lowest position of the bottom frame 202 by a distance, and is used for pressing the end door 40 downwards to separate the end door 40 from the limiting groove 20223.

The outer side of the upper door 401 may be provided with a handle. Borrow power and manpower when helping manual operation more and support, it is more convenient to operate.

The locking mechanism preferably comprises a side wall locking mechanism 304 for locking the upper side wall 301 and the lower side wall 302 so as to keep the same plane and not to generate relative movement, and an end door locking mechanism 403 for locking the end door 40 and the side wall 30 when the end door 40 is perpendicular to the box bottom 20 and the side wall 30.

The container 1 further comprises an end door locking mechanism 403 for locking the end door 40 and the side wall 30, at least a part of the end door locking mechanism 403 protrudes from the end door frame 409, and a notch 2025 for avoiding the end door locking mechanism 403 is arranged on the bottom frame 202. A projecting portion such as the movable bolt 4031 in the extended state of the end door locking mechanism 403 is shown in fig. 15 (which may or may not be projecting, in the retracted state shown in fig. 16) and the first projection 406 of the first end secondary locking mechanism and the second projection 407 of the second end secondary locking mechanism.

The sidewall locking mechanism 304 includes a pin 3045, and a first fixed block 3041 and a second fixed block 3042 respectively disposed on the upper sidewall 301 and the lower sidewall 302, the first fixed block 3041 and the second fixed block 3042 are disposed in a staggered manner, the lower sidewall 302 is further provided with an accommodating space 3043 for accommodating the first fixed block 3041, the first fixed block 3041 and the second fixed block 3042 are correspondingly provided with a first pin hole 3043 and a second pin hole 3044, the pin 3045 is movably disposed in the second pin hole 3044, the pin 3045 is fixedly connected with a handle 3046 disposed on the outer side of the second fixed block 3042, the upper sidewall 301 and the lower sidewall 302 are relatively rotated to an unfolding position by a hinge, the pin 3045 is withdrawn from the accommodating space 3043 by a pull 3046, the first fixed block 3041 is continuously unfolded to be accommodated in the accommodating space 3043, so that the upper sidewall 301 and the lower sidewall 302 are unfolded in place, releasing the pin 3045 allows the pin 3045 to extend into the first pin hole 3043 to lock the upper sidewall 301 and the lower sidewall 302.

The sidewall locking mechanism 304 includes a return spring disposed in the first pin hole 3043 for returning the pin 3045, the pin 3045 includes a first section and a second section, the second section has a larger diameter than the first section, the return spring is disposed on the first section, and the first pin hole 3043 and the second pin hole 3044 are matched in size with the pin 3045.

The end door locking mechanism 403 preferably includes a movable bolt 4031 disposed on the end door 40, a bolt hole 4032 disposed on the side wall 30, and a limit hole 4033 disposed on the end door 40 for limiting the movable bolt 4031, the movable bolt 4031 includes a bolt insert portion 40311 and a handle portion 4034, the bolt insert portion 40311 is driven by the handle portion 4034 to rotate around the limit hole 4033 perpendicularly to the end door 40, the bolt insert portion 40311 is L-shaped, the bolt hole 4032 is correspondingly provided with a horizontal hole and a vertical hole, the width of the horizontal hole and the depth of the vertical hole are matched with the width of the movable bolt 4031, the bolt insert portion 40311 is inserted into the horizontal hole of the bolt hole 4032, and after rotation, the vertical section of the bolt insert portion 40311 enters the vertical hole and is located, so that the movable bolt 4031 is limited in the bolt hole 4032 for locking. Preferably, the end door 40 includes an end door panel 408 and an end door frame 409, the side wall 30 includes a side wall panel 306 and a side wall frame 305, the retaining hole 4033 is disposed on the end door panel 408 through the mounting base plate, the latch hole 4032 is disposed on the side wall frame 305, and the movable latch 4031 is disposed on the end door frame 409 and rotates around the retaining hole 4033 perpendicularly to the end door 40. Preferably, the upper portion of the installation base plate and the opposite side of the operation side are disposed below the end door frame 409. Locking projections for positioning the movable bolt 4031 when the movable bolt 4031 is in place are provided on the mounting base plate.

Preferably, the locking mechanism comprises a first end door auxiliary locking mechanism for positioning and auxiliary locking the end door 40 and the side wall 30 before the end door locking mechanism 403 locks, the first end door auxiliary locking mechanism comprises first protrusions 406 horizontally protruding outwards and arranged on the left side and the right side of an end door frame 409, first grooves 307 horizontally arranged on the front surface of the side wall frame 305 and vertical grooves communicated with the first grooves 307 and arranged on the side surface of the side wall frame 305, the height difference between the first protrusions 406 and the topmost end of the end door frame 409 is larger than that between the first grooves 307 and the topmost end of the side wall frame 305, and the height difference between the first protrusions 406 and the topmost end of the end door frame 409 is equal to or smaller than that between the topmost end of the vertical grooves and the topmost end of the side wall frame 305.

Preferably, the locking mechanism comprises a second auxiliary locking mechanism of the end door 40 for positioning and auxiliary locking the end door 40 and the side wall 30 before the end door locking mechanism 403 locks, and comprises a plurality of second protrusions 407 horizontally protruding outwards and arranged at the left and right sides of the end door frame 409, and a plurality of second grooves horizontally arranged at the front surface of the side wall frame 305, and the height difference between the second protrusions 407 and the topmost end of the end door frame 409 is equal to the height difference between the second grooves and the topmost end of the side wall 30.

The most preferable sidewall locking mechanism 304 includes a first fixed block 3041 and a second fixed block 3042 respectively disposed on the upper sidewall 301 and the lower sidewall 302, the first fixed block 3041 and the second fixed block 3042 are disposed in a staggered manner, the lower sidewall 302 is further provided with an accommodating space 3043 for accommodating the first fixed block 3041, the first fixed block 3041 and the second fixed block 3042 are correspondingly provided with a first pin hole 3043 and a second pin hole 3044, the pin 3045 is movably disposed in the second pin hole 3044, the pin 3045 is fixedly connected with a handle 3046 disposed outside the second fixed block 3042 through a handle fixing hole 30451, the upper sidewall 301 and the lower sidewall 302 are relatively rotated to an approximate unfolding position through a hinge, the pin 3045 exits the first pin hole 3043, and the first fixed block 3041 is continuously unfolded in the accommodating space 3043 to enable the upper sidewall 301 and the lower sidewall 302 to be in place, releasing the pin 3045 allows the pin 3045 to extend into the first pin hole 3043 to lock the upper sidewall 301 and the lower sidewall 302. Of course, the end door locking mechanism 403 may also be a locking mechanism of other forms, and preferably the end door locking mechanism 403 of the present invention is adopted, and the optimal end door locking mechanism 403 of the present invention has a skillful design, can be operated by a single hand of a worker, and is convenient and reliable to lock. The end door locking mechanism 403 may be provided on both the upper end door 401 and the lower end door 402. Before the end door locking mechanism 403 is locked, the end door 40 and the side wall 30 can be positioned and pre-locked by an auxiliary locking mechanism, so that the manual hand supporting force in the locking process of the end door 40 is reduced, and the operation comfort is improved. The auxiliary locking mechanism of the end door 40 may be an auxiliary locking mechanism of the first end door 40, may also be an auxiliary locking mechanism of the second end door 40, and of course, may also include an auxiliary locking mechanism of the first end door 40 and a plurality of auxiliary locking mechanisms of the second end door 40. The auxiliary locking mechanism of the first end door 40 is arranged above the auxiliary locking mechanism of the first end door 40, and the auxiliary locking mechanism of the first end door 40 is arranged at the top end position of the side wall 30 close to the upper end door 401. When the auxiliary lock mechanism includes the first end door 40, the end door lock mechanism 403 may be provided only on the lower end door 402.

In the preferred embodiment of the present invention, the hinge between the top 10 and the side wall 30 (top side wall 301) is a top hinge 102, the hinge between the top side wall 301 and the bottom side wall 302 is a side wall hinge 303, the hinge between the top door 401 and the bottom door 402 is a top door hinge 405, and the hinge between the bottom 20 and the side wall 30 (bottom side wall 302) is a bottom hinge 203.

The hinge is preferably a waterproof hinge, so that rainwater is prevented from wetting or pouring into the folding box. The top and bottom hinges 102, 203 may be folded 90 degrees and the side wall hinges 303, end hinges may be folded 180 degrees. The case bottom hinge 203 is taken as an example for explanation as follows:

the waterproof hinge includes a first hinge portion 2031 and a second hinge portion 2032 engaged with the first hinge portion 2031, the first hinge portion 2031 is disposed on the upper portion of the second hinge portion 2032, the centerline of the second hinge portion 2032 is located on the inner side of the first hinge portion 2031, the first hinge portion 2031 includes a first engaging portion 20311 and a first slot portion 20312, the second hinge portion 2032 includes a second engaging portion 20321 and a second slot portion 20322, the first engaging portion 20311 is accommodated in the second slot portion 20322, the second engaging portion 20321 is accommodated in the first slot portion 20312, and the first engaging portion 20311 and the second engaging portion 20321 are oppositely disposed with an engaging groove 203111 and an engaging protrusion 203211. Preferably, the outer surface of the first hinge portion 2031 and/or the second hinge portion 2032 is provided with a water guide arc surface. Further, in the waterproof hinge of the present invention, the first hinge portion 2031 and/or the second hinge portion 2032 (i.e., the first horizontal fixing portion 20312 and the second horizontal fixing portion 20322) are provided with a plurality of waterproof grooves for preventing water from entering the container 1. Waterproof hinges are preferably used for hinging the top 10 and bottom 20 of the box with the side walls 30. The waterproof hinge has the advantages that the first hinge portion 2031 is arranged at the upper portion of the second hinge portion 2032, and the center line of the second hinge portion 2032 is located at the inner side of the first hinge portion 2031, so that rainwater can be well prevented from entering the hinge portion, and the reliability and the service life of the waterproof hinge are improved. Further, the first hinge portion 2031 and/or the second hinge portion 2032, especially the outer side of the first hinge portion 2031, are provided with a water guide arc surface for guiding water, so that water can be further effectively guided; the first hinge portion 2031 and/or the second hinge portion 2032, especially the second fixed horizontal portion 20322 on the second hinge portion 2032, are provided with waterproof grooves at the fixing positions of the corresponding container, so as to further prevent the infiltration of rainwater.

Preferably, the first hinge portion 2031 further comprises a first horizontal fixing portion 20312 for fixing, and the second hinge portion 2032 comprises a second horizontal fixing portion 20322 for fixing, the first horizontal fixing portion 20312 being connected to the first engaging portion 20311 by a first vertical connecting portion 20314, and the second horizontal fixing portion 20322 being connected to the second engaging portion 20321 by a second vertical connecting portion 20324.

Preferably, the first clamping groove portion 20312 is disposed on the first vertical connecting portion 20314, one end of the first clamping portion 20311 is connected to the first vertical connecting portion 20314, and the other end is disposed opposite to the first clamping groove portion 20312; the second slot portion 20322 is disposed at an outer side of the second vertical connecting portion 20324, one end of the second engaging portion 20321 is connected to the second vertical connecting portion 20324, and the other end is opposite to the second slot portion 20322.

Preferably, an outer surface of the second engaging portion 20321 is fitted to an inner surface of the first engaging portion 20312, an outer surface of the first engaging portion 20311 and an outer surface of the second engaging portion 20322 are disposed in a gap manner, the engaging protrusion 203211 and the engaging groove 203111 are central axes of the rotation, and the first engaging portion 20312 and the second engaging portion 20322 are each provided with a stopper portion for limiting the rotation angle of the first engaging portion 20311 and the second engaging portion 20321.

Preferably, the turning radius of the second engaging portion 20321 is larger than the turning radius of the first engaging portion 20311.

Preferably, the first hinge portion 2031 further comprises a first vertical protrusion 20313 provided on the first horizontal portion, the second hinge portion 2032 comprises a second vertical protrusion 20323 provided on the second horizontal fixing portion 20322, and the first vertical protrusion 20313 and the second vertical protrusion 20323 are provided on the inner sides of the first vertical connecting portion 20314 and the second vertical connecting portion 20324, respectively.

Preferably, the second hinge portion 2032 is sleeved in the first hinge portion 2031 by one end of the first hinge portion 2031, and the engaging protrusion 203211, the first engaging portion 20311 and the second engaging portion 20321 are not disengaged from the engaging groove 203111, the second groove portion 20322 and the first groove portion 307 when the first hinge portion 2031 and the second hinge portion 2032 are turned over relatively.

Has the advantages that: the foldable container can be folded and unfolded by two persons, the container does not need to be disassembled, and all parts do not separate from the container in the folding and unfolding processes. Can fold and expand fast, fold moreover, expand the locking reliable firm. The folding effect improves greatly for the idle rate greatly reduced of vehicle has promoted the efficiency of loading and unloading operation and transportation, greatly reduced the cost.

The end door containing structure and the end door overturning containing mechanism of the invention can contain the end door when loading and unloading goods through the containing part, and can only unfold the loading and unloading space to completely open the end door to form a loading and unloading opening when loading and unloading goods, thereby reducing operation obstacles, leading the loading and unloading operation to be carried out in multiple directions and flexibly and improving the loading and unloading efficiency. Through spacing groove and spacing subassembly (gyro wheel etc.), make the end door not deviate from the container and overturn, the easy convenience of operation in folding process. Furthermore, the end door and the side wall are all foldable, so that the requirement on an operation site is further reduced, and the operation is more flexible.

The locking mechanism is ingenious in design, enables the foldable container to be folded or installed in a quick locking and unlocking mode, is convenient to operate and reliable and stable in locking, and particularly can greatly reduce the cost of the locking mechanism and greatly reduce manpower in the end door locking process through the first end door auxiliary locking mechanism and the second end door auxiliary locking mechanism. And can lock the operation by one hand in the locking process, easy operation is convenient. And through the supplementary locking mechanism of first end door, can fix a position fast at the end door expansion in-process, alleviate the manpower, can further carry out and fix the end door through second end door locking mechanism, can not hand the operation that can singlehanded completion end door locking mechanism, can labour saving and time saving, convenient and fast ground accomplish folding and expansion.

The foldable container is simple and ingenious in structural design and convenient for manual operation, the top cover panel, the side wall panel and the end wall panel are made of glass fiber cellular boards, and the bottom support panel is made of aluminum plates with patterns attached to the glass fiber cellular boards; the top wall frame, the side wall frames and the end wall frames are all made of aluminum alloy materials; the bottom support frame is made of steel. Make the whole light in weight of container and have comparable intensity, make things convenient for manual operation and use more, by 2 people can relax folding and expansion with the help of any machinery. Be provided with standard fork truck fork hole simultaneously for remove the container around loading and unloading, further, the container still is provided with and is used for carrying out the location structure of superpose after folding, location structure including set up in superpose on the top cap protruding with set up in superpose shrinkage pool on the collet avoids the container after the superpose to slide each other. According to the size design of the existing trailer or boxcar, the volume of the folded and accommodated trailer or boxcar reaches 1/6 or below before folding.

The process of folding and unfolding the container 1 is described in detail below in a preferred embodiment.

When the collapsible container 1 is collapsed from the unfolded state, the end door locking mechanism 403, the first end door auxiliary locking mechanism, the second end door auxiliary locking mechanism, and the side wall locking mechanism 304 are released from the locked state to the unlocked state: firstly, sequentially releasing an end door locking mechanism 403, a second end door auxiliary locking mechanism and a first end door auxiliary locking mechanism for locking an end door 40 and a side wall 30, so that the end door 40 is separated from the side wall 30, rotating the end door 40 around a cylindrical roller 4041 (namely, around the axis of a fixed shaft 4042) arranged at the lower end, placing an upper end door 401 on a lower end door 402 when the lower end door 402 is horizontal, pushing the folded end door 40 forwards along a slide 2022 to be accommodated in an accommodating part, and respectively releasing, folding, sliding and accommodating the front end door 40 and the rear end door 40 at the front end and the rear end of the accommodating part; then the side wall locking mechanisms 304 of one side wall 30 are respectively and sequentially released, so that the side walls 30 are respectively folded inwards and accommodated between the box top 10 and the box bottom 20, the left side wall 30 and the right side wall 30 are respectively carried out, the box top 10 falls on the left side wall 30 and the right side wall 30, and the container 1 is completely folded.

The collapsible container 1 is unfolded from the collapsed state as follows: two persons stand at the front end and the rear end of the container 1, lift the top 10 at the right side to enable the top 10 and the upper end of the side wall 30 to be supported in an inclined manner, when the upper side wall 301 and the lower side wall 302 at the right side are to be completely unfolded, the two persons simultaneously operate the side wall locking mechanism 304 with one hand, pull the pin 3045 outwards through the handle 3046 to withdraw the interference of the pin 3045 on the rotation of the upper side wall 301, release the handle 3046 to release the pin 3045 when the side wall 30 at the right side is completely unfolded in place, so as to lock the upper side wall 301 and the lower side wall 302 at the right side, and at the moment, the side wall 30 at the right side and the top 10 are both supported on the box bottom 20 in; then, the box top 10 is lifted at the left side, the side wall 30 at the right side is made to be vertical, the box top 10 is lifted to be horizontal, when the upper side wall 301 and the lower side wall 302 at the left side are to be completely unfolded, two persons simultaneously operate the side wall locking mechanism 304 with one hand, the pin 3045 is pulled out through the handle 3046 to withdraw the interference of the pin 3045 on the rotation of the upper side wall 301, the handle 3046 is released when the side wall 30 at the left side is completely unfolded in place, the pin 3045 is released by releasing the handle 3046, and the locking of the upper side wall 301 and the lower side wall 302 at the left side is realized, so that the box top 10 and the left and; further, the front end door 40 accommodated in the front end and in a folded state is pulled out, the front end door 40 is lifted, the upper end door 401 and the lower end door 402 form a certain angle by a handle arranged on the upper end door 401, when the upper end door 401 is lifted to a first protrusion 406 on the upper end door 401 corresponding to a first groove 307 on the side wall 30, the end door 40 and the side wall 30 are positioned by an auxiliary locking mechanism of the first end door 40, wherein the first protrusion 406 is placed in the first groove 307 to position the front end door 40 and the side wall 30, the upper end door 401 is further angularly adjusted by a hinge to enable the first protrusion 406 to move in place in the first groove 307, and the front end door 40 is completely unfolded; then, the end door 40 and the side wall 30 are pre-installed through the auxiliary locking mechanism of the second end door 40, wherein the second protrusion 407 corresponds to the second groove 308, and the second protrusion 407 is pressed into the second groove 308 to pre-install the front end door 40 and the side wall 30; finally, the front end door 40 and the side wall 30 are finally locked through the end door locking mechanism 403; finally, the rear end door 40 and the side wall 30 are locked in the same manner as the front end door 40 is unfolded and locked.

Preferably, the locking mechanism comprises a side wall locking mechanism 304 for locking the upper side wall 301 and the lower side wall 302 so as to keep the same plane and not to move relatively, and an end door locking mechanism 403 for locking the end door 40 and the side wall 30 when the end door 40 is perpendicular to the box bottom 20 and the side wall 30.

The end door holding structure, the locking mechanism and the waterproof hinge structure may be set on common container or other foldable container.

The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which variations and modifications fall within the scope of the present invention as claimed.

Claims

1. A foldable container is characterized by comprising a top, a bottom, two opposite side walls and two opposite end doors, wherein the bottom is provided with an accommodating part for accommodating the end doors; the bottom of the case includes bottom of the case panel and bottom of the case frame, the portion of acceping sets up under the bottom of the case panel, and wherein the lateral wall includes left side wall and right side wall, and left side wall and right side wall all include upper and lower articulated lateral wall and lower lateral wall, and the end door includes front end door and rear end door, and front end door and rear end door all include upper and lower articulated end door and lower end door, and when the container was the ruggedness, left side wall and right side wall inwards fold respectively and accept between roof and the bottom of the case, and the end door accept in the portion of acceping, the container still including be used for locking upper and lower lateral wall to make keep not taking place relative motion's lateral wall locking mechanism in the coplanar and be used for carrying out the end door and the lateral wall end door locking mechanism of locking when the end door is perpendicular to bottom of the case and lateral wall.

2. The collapsible container as claimed in claim 1, wherein said receiving portion includes a support frame fixedly connected to the bottom frame, slide ways are provided on left and right sides of the support frame, slide blocks are fixedly provided on left and right sides of the end door near the lower end, the slide blocks are fixedly connected to the end door through a fixed shaft, the end door moves along the slide ways through the slide blocks, a limiting groove for limiting sliding of the slide blocks is provided on an end portion of the slide ways, a groove bottom of the limiting groove is lower than the slide ways, an inner side groove wall of the limiting groove is in smooth transition with the slide ways, the end door moves along the slide ways through the slide blocks, and the end door is turned around the slide blocks between a horizontal position and a vertical position through the slide blocks being limited in the limiting groove.

3. A collapsible container as claimed in claim 1, wherein said restraint slot is C-shaped, and said slide includes a cylindrical roller and a fixed axle disposed adjacent the bottom end of the side wall of the end door, said roller being rotatable relative to said fixed axle.

4. The collapsible container of claim 2, wherein said slide track is provided with a set of slide tracks, both ends of said slide track are provided with limit grooves, and said upper end door and said lower end door move along said slide track after being folded, so that said front end door and said rear end door are respectively received in said receiving portion.

5. The collapsible container as claimed in claim 1, wherein the end door locking mechanism includes a movable latch disposed on the end door, a latch hole disposed on the side wall and a limiting hole disposed on the end door for limiting the movable latch, the movable latch includes a latch portion and a handle portion, the latch portion is driven by the handle portion to rotate around the limiting hole perpendicular to the end door, the latch portion is L-shaped, the latch hole is correspondingly provided with a horizontal hole and a vertical hole, the horizontal hole and the vertical hole have a depth corresponding to the width of the movable latch, the latch portion is inserted into the horizontal hole of the latch hole, and after the movable latch is in place, the vertical section of the latch portion enters the vertical hole and is in place, and the movable latch is locked in the latch hole.

6. The locking mechanism of claim 5, wherein the end door comprises an end door panel and an end door frame, the side wall comprises a side wall panel and a side wall frame, the limiting hole is disposed on the end door panel through the mounting base plate, the latch hole is disposed on the side wall frame, and the movable latch is disposed on the end door frame to rotate around the limiting hole perpendicular to the end door.

7. The latch mechanism according to claim 5 wherein the mounting base plate is provided with a latching portion for locating the movable bolt when in position.

8. The latch mechanism of claim 1, wherein the end door includes an end door panel and an end door frame, the side wall includes a side wall panel and a side wall frame, the locking mechanism comprises a first end door auxiliary locking mechanism which is used for positioning and auxiliary locking the end door and the side wall before the end door locking mechanism is locked, the first end door auxiliary locking mechanism comprises first bulges which horizontally protrude outwards and are arranged at the left side and the right side of the end door frame, first grooves which are horizontally arranged at the front side and the rear side of the side wall frame and vertical grooves which are communicated with the first grooves, the height difference between the first protrusion and the topmost end of the end door frame is greater than the height difference between the first groove and the topmost end of the side wall frame, the height difference between the first protrusion and the topmost end of the end door frame is equal to or smaller than the height difference between the topmost end of the vertical groove and the topmost end of the side wall frame.

9. The locking mechanism of claim 1, wherein the end door comprises an end door panel and an end door frame, the side wall comprises a side wall panel and a side wall frame, the locking mechanism comprises a second end door auxiliary locking mechanism for positioning and auxiliary locking the end door and the side wall before the end door locking mechanism locks, the second end door auxiliary locking mechanism comprises a plurality of second protrusions horizontally and outwards protruding from the left side and the right side of the end door frame, and a plurality of second grooves horizontally arranged on the front side and the rear side of the side wall frame, and the height difference between the second protrusions and the topmost end of the end door frame is equal to the height difference between the second grooves and the topmost end of the side ledge.

10. The collapsible container as claimed in claim 1, wherein the sidewall locking mechanism includes a first fixing block and a second fixing block respectively disposed on the upper sidewall and the lower sidewall, the first fixing block and the second fixing block are alternately disposed, the lower sidewall is further provided with a receiving space for receiving the first fixing block, the first fixing block and the second fixing block are correspondingly provided with a first pin hole and a second pin hole, the pin shaft is movably disposed in the second pin hole, the pin shaft is fixedly connected to a handle disposed at an outer side of the second fixing block, the upper sidewall and the lower sidewall are relatively rotated to a position close to the extended position by a hinge, the pin shaft is withdrawn from the first pin hole by the handle, the upper sidewall and the lower sidewall are continuously extended to allow the first fixing block to be received in the receiving space and the upper sidewall and the lower sidewall to be extended to a position, and releasing the pin shaft to enable the pin shaft to extend into the first pin hole to enable the upper side wall and the lower side wall to be locked.