Abstract: A foldable box includes a floor and two longitudinal and transverse side exterior walls each lying opposite in pairs and foldable relative to the floor, each longitudinal side exterior walls—including a protrusion at a transverse side end extending toward the transverse side exterior walls when upfolded, limiting foldability of the transverse side exterior walls to the outside. Each transverse side exterior wall including a locking mechanism at the outside of the transverse side exterior wall, including when upfolded, a snap-in element movable in a vertical direction relative to the floor surface, latchable with the protrusion. The protrusion and/or the snap-in element includes contact surfaces, inclined relative to the vertical direction when upfolded wherein the locking mechanism opens against a spring pretensioning when exceeding a predetermined inward force acting upon the transverse side exterior wall.

Abstract: The present invention provides for a container that may be repeatedly used for moving and stored in a collapsed position when not in use. The container includes means for both longitudinal and transverse reinforcement of closed opposing flaps that make up the top and bottom portions of the container. In one embodiment is provided a container comprising: a plurality of side walls configured to provide a collapsible container, where each side wall is in operable communication with two other side walls; two foldable flaps in operable communication with each side wall; and at least one securing strip in operable communication with at least one of the foldable flaps, where the securing strip provides structure for releasable attachment with three different side walls and for securing four of the flaps in a closed position to form a container bottom or top.

Abstract: A collapsible container which includes a rectangular bottom wall and sidewalls pivotally joined to respective outer edges of the bottom wall and is changeable between an assembled state in which the sidewalls are raised from the bottom wall and a folded state in which the sidewalls are folded to be superimposed on the bottom wall comprises a pair of band plate members extending along upper edges of a pair of first sidewalls opposed to each other and a band plate hinge mechanism joining the band plate members near to top surfaces of the first sidewalls so that the band plate members are pivotable between a horizontal posture of protruding from the first sidewalls horizontally inward and a rising posture of rising from the first sidewalls vertically upward. The band plate hinge mechanism is capable of positioning the band plate members in the horizontal posture. The band plate members assuming the horizontal posture are arranged as displaced lower relative to the top surfaces of the first sidewalls.

Abstract: A collapsible bin is provided. The bin includes a pair of opposing side panels. The bin further includes a pair of opposing end panels. At least one of the end panels has a first plurality of male interlocking members extending outward a first distance along an upper portion of a first side edge, and a second plurality of male interlocking members extending outward a second distance greater than the first distance along a lower portion of its first side edge. At least one of the side panels includes a plurality of female interlocking members along a first side edge for receiving the first and second pluralities of male interlocking members extending along the first side edge of the at least one side panel.

Abstract: A hinge system comprises a first component and a second component. Arranged on the first component, a first pin (314) and a second pin (324) are not on a same axis. The first pin is movably arranged in a first slot (814) on the second component. The second pin is movably arranged in a second slot (824) on the second component. The first component selectively stays in a first position state or a second position state relative to the second component, thus allowing the hinge system to be folded reliably and conveniently. Also a collapsible container comprising the hinge system is disclosed.

Abstract: A foldable crate includes a base platform, a pair of longitudinal sidewalls forming a hinged connection with the base platform and a pair of flanking sidewalls forming a hinged connection with the base platform. The flanking sidewalls accommodate a locking mechanism, which includes an actuator, a transmission mechanism and a pair of locking elements, threaded into channels at the top portion of the flanking sidewalls.

Abstract: A foldable box includes a floor having a shaft arranged in a base area of an exterior wall area thereof. A guide opening in the fixed exterior wall area and includes a lateral opening section extending from an outside of the fixed exterior wall area inwards. A cam in the base area includes a cam contour which gets into contact with a contact surface of the exterior wall area. When exceeding a boundary angle the shaft is moved inwards. After exceeding the boundary angle a bottom side of the exterior wall is pressed against an internal edge area of the fixed exterior wall area by a force higher than a force by which the bottom side of the exterior wall in the erected vertical position is pressed against a top side of the fixed exterior wall area by the effect of the shaft or the cam.

Abstract: A folding assembly box includes vertical corner hinge frames disposed in corners of the box, and vertical middle hinge frames disposed between the vertical corner hinge frames facing each other at both sides thereof. The vertical corner hinge frames are unfolded at an angle to form the respective corners of the box, and are hinged in the opposite direction to the direction where the vertical corner hinge frames are unfolded. The vertical middle hinge frames are unfolded together with the vertical corner hinge frames at both sides thereof, and hinged in the opposite direction to the opposite direction where the vertical corner hinge frames are unfolded. Top and bottom horizontal frames are disposed to connect upper and lower ends of the vertical corner hinge frames facing each other. Panels are inserted between the first top and bottom horizontal frames facing each other.

Abstract: Embodiments of the invention are directed to collapsible transport containers with hinged and/or removable side walls to facilitate container collapse, as well as latching mechanisms capable of securing the side walls of such containers to one another and releasing said side walls from one another without the need for tools. Embodiments of the invention are also directed to keeper assemblies that allow said latching mechanisms to guard against inadvertent unlatching and possible unintentional collapse of one or more container side walls.

Abstract: A reusable, sanitary and folding container includes a base, two folding sidewalls, two folding end walls and latches and hinges. The base includes slots that receive the hinge pins that allow the sidewalls and end walls to fold up and down. These hinge slots are open and provide for water or spray through them to improve the cleaning process of a container after it has been used. The container is formed of a resilient, but light polyurethane/fiber composite material.

Abstract: The present disclosure relates to a blow-molded, rigid collapsible container that can be suitable for storage and dispensing systems of practically any size. The rigid collapsible container may be a stand-alone container. The container may be blow-molded as a unitary piece that may include folds or pre-folds that allows the container to collapse into a relatively flat position. In an expanded state, the container may have a generally trapezoidal prism shape.

Abstract: A collapsible container includes a bottom wall and a plurality of sidewalls. At least two of the side walls include a rigid first segment and a rigid second segment coupled to the first segment by a pivot to permit the side wall to fold so that the first segment and second segment form an acute angle or are parallel when the container is collapsed. The collapsible container can be configured in a storage configuration for containing objects or a collapsed configuration occupying less volume than the storage configuration for stowing the container.

Abstract: A collapsible cargo container is disclosed wherein end walls are pivoted into the container when empty and locked against the roof, and then side walls buckle via hinges into a folded configuration. The folded configuration is achieved easily with a modified spreader without the need to otherwise disassemble or deconstruct the container, leaving no loose parts or tools. The cargo container preferably constructed with an improved light weight panel that facilitates loading of the container while improving strength and reducing weight.

Abstract: A collapsible refuse bin which has two ends walls and two side walls atop a base. The end walls, side walls and base are twinned wall plastic components. The side walls are made of two panels which are pivotally attached to one another along vertical axis. The end walls are pivotally attached to the base. The side walls engage a base along a tongue and groove means. Side walls and end walls have mutually engaging edges. Removal of the side walls followed by folding down the end walls converts the refuse bin to a collapsed position.

Abstract: A collapsible container includes a rectangular bottom wall and a plurality of walls pivotally connected to the bottom wall. The plurality of walls include first and second side walls disposed in facing relation and first and second end walls disposed in facing relation. An access door is provided in the first end wall. The access door is pivotable between a closed position and an open position. The first side wall is collapsible from an upstanding position to a collapsed position overlaying the bottom wall, the second side wall is collapsible from an upstanding position to a collapsed position overlaying the collapsed first side wall, and the first and second end walls are collapsible from an upstanding position to a collapsed position overlaying the second side wall.

Abstract: A foldable crate is disclosed. The foldable crate includes a base platform, a pair of longitudinal sidewalls forming a hinged connection with the base platform and a pair of flanking sidewalls forming a hinged connection with the base platform. The flanking sidewalls accommodate a locking mechanism, which includes an actuator, a transmission means and a pair of locking elements, threaded into channels at the top portion of the flanking sidewalls.

Abstract: A collapsible bin container having a base portion and side walls hingedly connected to the base portion. At least one of the side walls includes an integrally formed hinge lug having a first generally cylindrical portion and a second flat angled portion. The base portion includes a corresponding hinge slot having an opening configured to receive the hinge lug only when the side wall is positioned at a first angle with respect to a horizontal surface.

Abstract: A foldable carrying case is described that has an integrated one-piece body of hingeably connected panels, and flexible gussets hingeably connected to the panels. The body is further provided with releasable fasteners. The body converts from a plane configuration to a container configuration, and vice versa. The container configuration is formed by folding the panels and the gussets, and the panels and gussets are connected by the releasable fasteners to prevent the container from unfolding. Also described is a method for making and using such a foldable carrying case. Also described is a kit including such a foldable carrying case and at least one storage container.

Abstract: A plastic container includes at least two foldable sidewalls articulated to a container base by at least two hinge connections, each including a hinge bolt or pin for pivoting in a receiving gap of the base frame. The receiving gap has an elongate opening to allow the hinge bolt to move in the receiving gap from a lower to an upper end position. The opening has a length at least corresponding to the thickness of the sidewall which is thus liftable vertically by at least the thickness. At least two guide elements are formed at the sidewall and received in the base frame in recesses which have a nose defined by an upper edge spaced from an upper edge of the base frame by a distance which corresponds to a length of the guide element from a lower edge of the sidewall to a lower edge of the guide element.

Abstract: A collapsible rectangular container includes a container body having a pair of opposed solid side walls, a pair of opposed foldable side walls hingedly connected to the pair of solid side walls and a base end wall and a top end wall removably and slidably connected to ends of the pairs of solid and foldable side walls when the container body is in an erected position. The base and top end walls are removable from the ends of the container body to permit the body to be collapsed into a flat configuration by folding the side walls inwardly when the base and top end walls are removed. The end walls are slidably received on one of the solid side walls when the container body is in a collapsed position. When the containers are collapsed and/or erected, the containers interlock for shipment.

Abstract: A convertible device that converts between an activity mat and a storage container to capture and store numerous articles. Upon reclosing the activity mat, the articles are recaptured into the storage container. The device includes walls and a base, webbing connected between each adjacent wall pair, and a joint connected between the base and walls so that they are foldable into a third configuration wherein the footprint of the folded device is roughly the size of the base. In the third configuration, the walls are stacked relative to the base. The convertible device may further include two zippers for releasably holding the walls in a rigid and upright position in the first configuration. The webbing can be inwardly biased such that when the walls are urged from the second to the first configuration, the webbing folds toward the interior of the convertible device.

Abstract: A self-locking package comprising a sleeve having a self-initializing locking tab and a slidable insert. The sleeve comprises a plurality of panels forming a substantially quadrilateral cross section. The locking tab extends between a top panel and a bottom panel and is offset from corners of the quadrilateral. An insert for retaining an item is at least partially insertable within an opening of the sleeve and includes a notch formed in at least one portion of the perimeter of the insert, such that when the insert is properly inserted into the sleeve, the locking tab seats within the notch to substantially prevent relative movement between the insert and the sleeve.

Abstract: A collapsible frontward-tilting receptacle device includes a stationary receiving body that defines an internal space and is collapsible and a movable receiving body that forms a receiving space. The stationary receiving body has a bottom on which a rigid movable bottom board is positioned. The stationary receiving body has a side wall to which a movable support board having a stop section is movably connected. A free end of the movable support board is connected to an opposite side wall of the stationary receiving body to serve as a top plate. The movable receiving body is received in the internal space of the stationary receiving body so that a front end of the bottom thereof is coupled to a front portion of the bottom of the stationary receiving body to allow a top opening of the movable receiving body to be rotated out of the stationary receiving body.

Abstract: A folding box includes a bottom board, two first folding board sets opposite to each other, two second folding board sets opposite to each other, and a mounting frame. Top sides of the first folding board sets are pivotably coupled to the first sidewalls of the mounting frame respectively. Bottom sides of the second folding board sets are pivotably coupled to the second sides of the bottom board. In use, the mounting frame is pulled up, bottom sides of the first folding board sets are locked to the opposite first sides of the bottom board respectively, top sides of the second folding board sets are locked to the opposite second sidewalls of the mounting frame respectively.

Abstract: The invention relates to a device for unlocking swing-action side walls (2 to 5) which are hinged on the base (6) of boxes and/or containers (1), of which the two opposite end walls (4, 5) can be locked to the two adjacent side walls (2, 3) and unlocking takes place by virtue of a lifting movement of a bracket-like actuator (13), which interacts with a movement-deflecting means (16, 17), and wherein unlocking crosspieces (19) act on spring-tongue-like locking means (10) of the side walls (4, 5), these locking means being latched into the end walls (2, 3), and force them out of their latching seat, in which they clamp the end walls (2, 3).

Abstract: A foldable box includes a floor and two longitudinal and transverse side exterior walls each lying opposite in pairs and foldable relative to the floor, each longitudinal side exterior walls including a protrusion at a transverse side end extending toward the transverse side exterior walls when upfolded, limiting foldability of the transverse side exterior walls to the outside. Each transverse side exterior wall including a locking mechanism at the outside of the transverse side exterior wall, including when upfolded, a snap-in element movable in a vertical direction relative to the floor surface, latchable with the protrusion. The protrusion and/or the snap-in element includes contact surfaces, inclined relative to the vertical direction when upfolded wherein the locking mechanism opens against a spring pretensioning when exceeding a predetermined inward force acting upon the transverse side exterior wall.

Abstract: The present invention relates to a container comprising foldable sidewalls which has a hinge connection which almost entirely prevents the base from slumping relative to the sidewall even under load, The container may be produced in a particularly simple and inexpensive manner, since due to the specific hinge connection, the base may be produced, in an injection-molding process, without any slide in the tool, and since a simple tool arrangement is thus enabled.

Abstract: A box includes a floor and at least two pairs of opposing sidewalls extending upwards from the floor in the vertical direction. The sidewalls are arranged foldably with respect to the floor and may be locked with each other in their upfolded position. At least one of the sidewalls includes an unlocking mechanism which is movable between a rest position and an unlocking position in which the locking of the sidewalls is undone. The unlocking mechanism includes at least one pretensioning element which pretensions the unlocking mechanism into its rest position and includes a first end connected to the unlocking mechanism or the sidewall and a second, free end.

Abstract: A box includes, in principle, a plastic structure with a rectangular base, two ends, and two sides which are pivotably coupled to said base. The ends include centered parts combined with latches, which in one position anchor the sides and ends, while in another position said connection between the ends and the sides is released in order to collapse said elements and thus achieve a collapsed position. The box includes an anchor device consisting of a series of rotary bodies (5) that connect the bolts of the lock (4) to the centered part (1) via two pairs of resilient parts (6) and (7) which, in the inoperative position thereof, hold the bolts of the lock (4) outwards, attaching the ends (2) and the sides (9), and when the central part (1) is moved upward, the latches thus release the ends and the sides.

Abstract: A collapsible bulk bin has floating hinges with no moving parts that allow the walls of the bin to lay flat on top of each other. The collapsible bulk bin can include removable support feet that may be easily replaced thereby extending the usable life of the collapsible bulk bin.

Abstract: Structures, methods, and systems associated with a stackable and collapsible container are provided. One structure includes a stackable and collapsible container having at least four non-collapsible, load bearing vertical support members attached to vertical walls of the container and capable of supporting the weight of other containers. A top surface is included having a number of sections which include a pivotal connection to one another and which are collapsible about the pivotal connection to an interior of the container. A bottom surface is included having a number of sections which include a pivotal connection to one another and which are collapsible about the pivotal connection to an interior of the container. The top and the bottom surfaces of the container can be fixedly positioned in a number of collapsed states.

Abstract: A folding container including a base portion, first and second lower side wall portions, and first and second upper side wall portions having a hinge connection to the lower side wall portions. The folding container including locking tabs in the base portion for engaging notches in the lower side wall portions when the container is in a folded configuration.

Abstract: The invention relates to a folding box (1), comprising a base and first and second side walls (2, 3) pivotably connected to the base which, together with the base, form a box open at the top in a folded open state, as well as at least one retaining element (4) disposed on a first side wall (2) and at least one pin (5) mounted so as to be rotatable on a second side wall (3), and the at least one pin (5) has a cross-section that is not circular on at least one pin end (5a, 5b) and the at least one pin end (5a, 5b) locks the first to the second side wall (2, 3) by means of the retaining element (4) in a first rotational position and unlocks said side walls (2, 3) in a second rotational position.

Abstract: A foldable box includes a floor and two longitudinal and transverse side exterior walls each lying opposite in pairs and foldable relative to the floor, each longitudinal side exterior walls—including a protrusion at a transverse side end extending toward the transverse side exterior walls when upfolded, limiting foldability of the transverse side exterior walls to the outside. Each transverse side exterior wall including a locking mechanism at the outside of the transverse side exterior wall, including when upfolded, a snap-in element movable in a vertical direction relative to the floor surface, latchable with the protrusion. The protrusion and/or the snap-in element includes contact surfaces, inclined relative to the vertical direction when upfolded wherein the locking mechanism opens against a spring pretensioning when exceeding a predetermined inward force acting upon the transverse side exterior wall.

Abstract: A positioning structure for a clipboard contains a first cover and a second cover. Two grooves are formed on a connection of the first cover and the second cover. The first cover includes two first recesses, and the second cover includes two second recesses, two retainers are attached in the two first recess and the two second recess. The first cover also includes a first slot, a second slot, and a third slot. The second cover also includes a first notch, a second notch, and a third notch. Each of plural positioning members includes an integrally formed abutting block, an actuating section, a first inserting piece, two second inserting pieces, and a cutout. The plural positioning members are inserted in or removed from the first slot, the second slot, the third slot, the first notch, the second notch, the third notch by using a plurality of first inserting pieces.

Abstract: A large container (2) comprising: a base component (3); four circumferentially arranged side walls (4, 8) of which at least one is attached to the base component (3) through at least one hinge and the at least one side wall is thus foldable towards the base component (3); at least one locking device at the foldable side wall (4) for attaching the foldable side wall (4) in folded up condition at least at one side wall (8) which joins the foldable side wall (4), wherein the locking device is arranged in a recess (10) of the foldable side wall (4), wherein the recess is configured so that the locking device is actuatable from inside and outside the large container (2).

Abstract: A transport case 1 with hinged side parts 3, 4 made of plastic is provided, whereby the height of the hinged side parts 3, 4 is greater than 16 centimeters or the permissible load of the transport case is greater than 16 kg, and wicket-shaped hollow stiffening strips 11, 12 are present in the hinged side parts 3, 4. The stiffening strips 11, 12 formed by injection of liquid have a surface roughness that is less than 10 micrometers.

Abstract: A cooler includes a main body which includes a base, an upper rim, and one or more cooler walls extending therebetween. The cooler in some embodiments further includes a removable wheel assembly which includes two coaxial wheels, and an axle. The two coaxial wheels are removably securable to the axle. The cooler still further comprises a wheel fastening system configured to secure the removable wheel assembly to the base of the main body which includes a mount, a clip hingedly connected to the mount, and a locking clasp configured to lock the clip into a closed position to secure the wheel assembly. The cooler yet further comprises a lid including two wheel storage recesses, each being sized and dimensioned to receive and retain one of the coaxial wheel of the wheel assembly, and an axle storage recess sized and dimensioned to receive and retain the axle of the wheel assembly.

Abstract: A collapsible bin is provided. The bin includes a pair of opposing side panels. The bin further includes a pair of opposing end panels. At least one of the end panels has a first plurality of male interlocking members extending outward a first distance along an upper portion of a first side edge, and a second plurality of male interlocking members extending outward a second distance greater than the first distance along a lower portion of its first side edge. At least one of the side panels includes a plurality of female interlocking members along a first side edge for receiving the first and second pluralities of male interlocking members extending along the first side edge of the at least one side panel.

Abstract: A folding container including a base portion, first and second lower side wall portions, and first and second upper side wall portions having a hinge connection to the lower side wall portions. The folding container including locking tabs in the base portion for engaging notches in the lower side wall portions when the container is in a folded configuration.

Abstract: A collapsible container for storing and transporting content is provided. The container has the strength to hold up to one hundred and fifty pounds of contents while being stacked up to eight high. The container may be loaded in a flattened configuration and then erected to enclose the contents. The container is also collapsible for ease of storage and transport. In some embodiments, the container includes wings that attach the end walls to the front and back walls and maintain the container in an upright configuration.

Abstract: The invention relates to a device for unlocking foldable side walls (2 to 5) hinged on the floor (6) of boxes and containers (1), the two opposite end walls (4, 5) thereof being lockable to the adjacent side walls (2, 3) and the unlocking taking place by a lifting motion of a yoke-like adjusting member (13) disposed under spring pretension and guided in recesses of stiffening ribs (11, 12) in the outer surfaces of the end walls (4, 5). The adjusting member (13; 130) is designed having motion-diverting means (16, 17) on the two outside ends thereof, said means diverting vertical motion into a horizontal motion unlocking the side walls when the adjusting member (13) is raised, wherein the unlocking bars (19) of the adjusting member act on spring tab-like locking means (10) of the side walls (4, 5) engaged in the end walls (2, 3) and press them out of engaged seating thereof surrounding the end walls (2, 3).

Abstract: A collapsible freight container includes a floor panel, a roof panel and two longitudinal side walls connected to the floor panel and the roof panel. Each side wall includes a first and a second part, which are connected by a hinged joint, such that the first part can hinge towards the second part of the same side wall about a hinge axis extending in the longitudinal direction of the freight container. Each corner of the freight container is provided with a corner pin. The corner pins can be moved simultaneously, using an unlocking mechanism, from a locked position, in which the side walls are rigidly connected to the roof panel and the floor panel by the corner pins, to an unlocked position, in which the side walls are hinged to the roof panel and the floor panel by the corner pins.

Abstract: The application is directed to a window insert that may be inserted into a gap near a window such that the insert may be visible through the window. In certain embodiments, the application is directed to a window insert having a visible area that may be visible through the window and may also have a ledge area that may support, hold, or otherwise retain a removable product or removable accessory on, near, or around the window insert. The window insert may further comprise an anchor and a visible area wherein the ledge contains one or more wells for holding or retaining food stuffs.

Abstract: The invention is a collapsible container for transporting fresh fish or the like, in particular ice-cooled goods or foodstuffs. This “fish crate” is essentially manufactured by means of plastic injection molding, i.e. by injection-molding the side walls and the base of the collapsible container using an injection-molding tool. In particular the four side walls are implemented to be double-walled, a closed air cushion being created by welding on a footing after the injection molding process. In the area of the slightly tray-shaped base, openings for the passage of liquid are provided; in particular, the melt water of the ice-cooled fresh fish is to be drained off to the outside. Besides these base openings, further additional openings which join the base and the side walls in a foldable manner may be provided in the area of the hinges.

Abstract: A foldable storage box comprises a soft walled body open at its top end and closed at the opposing end, a top frame being mounted with the walled body and contiguous to the open top end, and a bottom frame being mounted with the walled body and contiguous to the closed opposing end; wherein the top frame are provided with attachment elements respectively on its bottom and side surfaces, the bottom frame are provided with attachment elements respectively on its top and side surfaces, such that separate boxes can be held in stacks or side by side with the attachment elements. A plurality of supporting bars are provided within the walled body to each serve as a support between the top and bottom frames to form a container. The supporting bars can be detached from the both frames to enable the walled body to be folded into a flat pack.

Abstract: A reusable shipping container adapted to resist damage to the feet of the container and to allow the fork straps to be replaced if the fork straps or the feet are damage. The container can also easily be adapted to accommodate the use of pallet jacks without reducing the capacity of the container or increasing the weight of the container. The container is also adapted to easily receive dunnage required to protect the material being shipped in the container.

Abstract: A collapsible bin is provided. The bin includes a pair of opposing side panels. The bin further includes a pair of opposing end panels. At least one of the end panels has a first plurality of male interlocking members extending outward a first distance along an upper portion of a first side edge, and a second plurality of male interlocking members extending outward a second distance greater than the first distance along a lower portion of its first side edge. At least one of the side panels includes a plurality of female interlocking members along a first side edge for receiving the first and second pluralities of male interlocking members extending along the first side edge of the at least one side panel.

Abstract: A collapsible, portable container having a roof, a base, two foldable end walls and two removable side walls. The end walls and side walls of the container are load bearing elements having a twinned wall structure made of rotomolded plastic. The container is collapsed by removing the side walls and inwardly folding the end walls to draw the roof closer to the base. The load bearing capacity of the end walls and the side walls can be increased by arched indentations formed within the twinned wall structure.

Abstract: Disclosed herein is a folding container which stores various kinds of cargo and is transported. A container body of the folding container includes a top plate, a bottom plate, left and right side plates, and front and rear end plates. Each side plate includes upper and lower plate bodies which are connected to each other and to the top and bottom plates by spring hinges. A rotating shaft is provided in the container body, and a belt connected to the rotating shaft is connected to the left and right side plates at positions adjacent to the junctions between the upper and lower plate bodies. The left and right side plates are pulled inwards and folded by rotating the rotating shaft and winding the belt around the rotating shaft. Therefore, the operation of folding or unfolding the container body can be facilitated, and safety can be ensured during the operation.