WO2018188461A1 - 折叠箱 - Google Patents

折叠箱 Download PDF

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Publication number
WO2018188461A1
WO2018188461A1 PCT/CN2018/079795 CN2018079795W WO2018188461A1 WO 2018188461 A1 WO2018188461 A1 WO 2018188461A1 CN 2018079795 W CN2018079795 W CN 2018079795W WO 2018188461 A1 WO2018188461 A1 WO 2018188461A1
Authority
WO
WIPO (PCT)
Prior art keywords
base
side plate
plate
folding box
side panel
Prior art date
Application number
PCT/CN2018/079795
Other languages
English (en)
French (fr)
Original Assignee
上海鸿研物流技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海鸿研物流技术有限公司 filed Critical 上海鸿研物流技术有限公司
Priority to AU2018252625A priority Critical patent/AU2018252625B2/en
Priority to JP2020504756A priority patent/JP6940202B2/ja
Priority to US16/604,295 priority patent/US11548682B2/en
Priority to EP18783632.5A priority patent/EP3611107B1/en
Priority to NZ758672A priority patent/NZ758672B2/en
Priority to EP22176188.5A priority patent/EP4082927B1/en
Publication of WO2018188461A1 publication Critical patent/WO2018188461A1/zh
Priority to ZA2019/07402A priority patent/ZA201907402B/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/40—Details of walls
    • B65D1/42—Reinforcing or strengthening parts or members
    • B65D1/46—Local reinforcements, e.g. adjacent closures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D11/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material
    • B65D11/18—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material collapsible, i.e. with walls hinged together or detachably connected
    • B65D11/1833—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material collapsible, i.e. with walls hinged together or detachably connected whereby all side walls are hingedly connected to the base panel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
    • B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
    • B65D21/0209—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together stackable or joined together one-upon-the-other in the upright or upside-down position
    • B65D21/0212—Containers presenting local stacking elements protruding from the upper or lower edge of a side wall, e.g. handles, lugs, ribs, grooves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
    • B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
    • B65D21/0209—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together stackable or joined together one-upon-the-other in the upright or upside-down position
    • B65D21/0228—Containers joined together by screw-, bayonet-, snap-fit or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
    • B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
    • B65D21/0209—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together stackable or joined together one-upon-the-other in the upright or upside-down position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D21/00—Nestable, stackable or joinable containers; Containers of variable capacity
    • B65D21/02—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together
    • B65D21/0209—Containers specially shaped, or provided with fittings or attachments, to facilitate nesting, stacking, or joining together stackable or joined together one-upon-the-other in the upright or upside-down position
    • B65D21/0217—Containers with a closure presenting stacking elements
    • B65D21/0223—Containers with a closure presenting stacking elements the closure and the bottom presenting local co-operating elements, e.g. projections and recesses

Definitions

  • the present invention relates to containers, and in particular to folding boxes.
  • the side panels When the existing folding box is in use, the side panels are relatively erected, and the four side panels are interlocked to form a relatively closed space to accommodate the goods, and after the goods are emptied, the cabinet needs to be recycled, in order to save costs.
  • the box side panels are folded so that more cabinets can be accommodated in the same space. It is easy to clean during the recycling process, especially when the folding box is used to load foods such as fruits and vegetables.
  • the cabinet should be safe and reliable in the use of the goods, and the side panels should be easily and quickly unlocked and folded when the goods are empty.
  • the existing folding box patent such as the folding disclosed in US Pat. No. 7,100,786 B2
  • the base hinge mounting position is single and weak due to the elastic mounting requirements. After the base is formed, there are more cavities that are not closed, and the recessed portions of the mesh ribs are prone to residual dirt during rapid cleaning, and the efficiency is low.
  • the base has a large number of deep cavity, which will flow a large amount of sewage during cleaning, is not easy to discharge, and is easy to breed bacteria. .
  • the single thin-walled structure has a single ability in the form of bending and compression resistance, especially in the hinged part of the side plate and the base, and the single thin wall connects the side plate main body and the hinge, especially in the case where the box carries a dense load.
  • the near hinge portion of the side panel can not resist the deformation of the base retaining edge inward when the load is increased, so that the base of the box body is more easily recessed, causing the inner side of the base retaining edge to further cause the inner side of the base.
  • Deformation in the side panels When using the multi-layer box stacking, the upper layer of goods will be deformed with the thin wall of the base and the cargo in the box below it will be pressed, which has a certain safety hazard to the cargo to some extent, and the cabinet is reused.
  • the use of force deformation in frequent high and low temperature environments of the cabinet is likely to cause fatigue damage and shorten the service life of the cabinet.
  • a folding box including a base and two pairs of opposite side plates, the base having a plate-like body and two surrounding the plate-like body
  • the opposite pair of side panels are hinged to the retaining edge of the base and can be folded relative to the base, wherein the bottom of the side panel is provided with a side panel hinge, the base
  • Corresponding base hinges are provided on the trim, wherein the side panel hinges are hinged to the base hinges to hinge the side panels to the base; and at least one of the two pairs of opposing trims
  • the inside of the pair of retaining edges is provided with a first closed cavity extending in the direction in which the length of the retaining edge extends.
  • the bottom of the side panel extends from a plurality of connecting portions spaced apart from each other, the connecting portion is provided with a side panel engaging portion; and a retaining edge of the base is provided with a base engaging portion, wherein The base engaging portion is arranged to engage the side plate engaging portion when the side plate is hinged to the base.
  • a retaining edge of the base is provided with a cavity at a position corresponding to the connecting portion, the base engaging portion is disposed in the cavity, and the side plate engaging portion is disposed at The side panel is rotatable about the base occlusion portion during folding relative to the base.
  • the bottom of the side plate is further provided with a first side plate limiting portion
  • the base is provided with a first base limit at a position corresponding to the first side plate limiting portion. a portion, wherein the first side plate limiting portion cooperates with the first base limiting portion to prevent the side plate from everting out in a state where the side plate is upright.
  • a second closed cavity is disposed on the plate-shaped body, and the second closed cavity protrudes from a main surface of the plate-shaped body.
  • the second closed cavity is disposed on a major surface of the plate-shaped body that faces away from the retaining edge.
  • At least two of the second closed cavities extending parallel to one of the guard edges are disposed on the plate-like body.
  • two pairs of opposing second closed cavities are disposed around the base.
  • the base is provided with two second closed cavities that intersect each other, and the intersection of the two second closed cavities is located at the center of the base.
  • the bottom of the side panel is internally provided with a third closed cavity extending along the length of the side panel.
  • both ends of each of the second closed cavities extend to an edge of the base.
  • the bottom of the side plate extends a plurality of connecting portions spaced apart from each other, and the connecting portion is provided with a side plate engaging portion; the guarding edge of the base is at a position corresponding to the connecting portion a cavity is provided, and the cavity is provided with a base engaging portion, wherein the base engaging portion is arranged to engage the side plate engaging portion when the side plate is hinged to the base, And the side panel engaging portion is configured to be rotatable around the base engaging portion during folding of the side panel relative to the base; and the bottom side of the side panel is further provided with a first side panel limiting portion And the first base limiting portion is disposed on the base at a position corresponding to the first side plate limiting portion, wherein the first side plate is restricted in a state where the side plate is upright The portion cooperates with the first base limiting portion to block the side panel from eversion.
  • the plate-shaped body has a thickness of 3 mm to 5 mm.
  • the top of the side panel is provided with a side panel limiting portion
  • the bottom of the base is provided with a base limiting portion, wherein the side panel limiting portion and the base limiting portion are arranged in two
  • the base limiting portion of the folding box located above cooperates with the side plate limiting portion of the folding box located below, so that the base of the folding box located above and the folding below
  • the relative position between the side panels of the box is fixed.
  • a folding box comprising a base and two pairs of opposite side panels, the base having a plate-like body and two pairs of opposing guards surrounding the periphery of the plate-like body
  • the two opposite pairs of side panels are hinged to the retaining edge of the base and foldable relative to the base, wherein the bottom of the side panel is provided with a side panel hinge portion, and the side edge of the base is provided a corresponding base hinge, wherein the side panel hinge is hinged to the base hinge to hinge the side panel to the base; and the plate body is provided with a closed cavity, and the The closed cavity protrudes from the main surface of the plate-like body.
  • the closed cavity is disposed on a major surface of the plate-shaped body that faces away from the retaining edge.
  • At least two of the second closed cavities extending parallel to one of the guard edges are disposed on the plate-like body.
  • two pairs of opposing closed cavities are disposed around the plate-shaped body.
  • the base is provided with two closed cavities that intersect each other, and the intersection of the two closed cavities is located at the center of the base.
  • both ends of the closed cavity extend to the guard edge adjacent the base.
  • a plurality of through holes are distributed on the plate-shaped body.
  • the plate-shaped body has a thickness of 3 mm to 5 mm.
  • the bottom of the side panel extends from a plurality of connecting portions spaced apart from each other, the connecting portion is provided with a side panel engaging portion; and a retaining edge of the base is provided with a base engaging portion, wherein The base engaging portion is arranged to engage the side plate engaging portion when the side plate is hinged to the base.
  • a retaining edge of the base is provided with a cavity at a position corresponding to the connecting portion, the base engaging portion is disposed in the cavity, and the side plate engaging portion is disposed at The side panel is rotatable about the base occlusion portion during folding relative to the base.
  • the bottom of the side plate is further provided with a first side plate limiting portion
  • the base is provided with a first base limit at a position corresponding to the first side plate limiting portion. a portion, wherein the first side plate limiting portion cooperates with the first base limiting portion to prevent the side plate from everting out in a state where the side plate is upright.
  • the top of the side panel is provided with a side panel limiting portion
  • the bottom of the base is provided with a base limiting portion, wherein the side panel limiting portion and the base limiting portion are arranged in two
  • the base limiting portion of the folding box located above cooperates with the side plate limiting portion of the folding box located below, so that the base of the folding box located above and the folding below
  • the relative position between the side panels of the box is fixed.
  • the closed cavity of the base is arranged such that when the two folding boxes are stacked on one another, the closed cavity of the upper folding box is inside the side plates of the lower folding box.
  • a folding box comprising a base and two pairs of opposite side panels, the two pairs of opposite side panels being hinged to the base and relative to the base Folded, among them,
  • the bottom of the side plate extends a plurality of connecting portions spaced apart from each other, and the connecting portion is provided with a side plate engaging portion;
  • a retaining edge of the base is provided with a cavity at a position corresponding to the connecting portion, and the cavity is provided with a base engaging portion, wherein the base engaging portion is arranged to be hinged to the side plate when the side plate is hinged
  • the base engaging portion is engaged with the side plate engaging portion, and the side plate engaging portion is disposed to be rotatable around the base engaging portion during folding of the side plate relative to the base; as well as
  • the bottom of the side plate is further provided with a first side plate limiting portion, and the base is provided with a first base limiting portion at a position corresponding to the first side plate limiting portion, wherein In a state in which the side panel is upright, the first side panel limiting portion cooperates with the first base limiting portion to block the side panel from eversion.
  • the base engaging portion extends upward from a bottom surface of the cavity and is spaced apart from a side wall of the cavity facing the inside of the folding box.
  • the opening of the cavity faces the top and the inside of the bead.
  • the side panel engaging portion integrally extends from one side of the connecting portion along a length direction of the side panel.
  • the first side plate limiting portion is a rib extending from a side opposite to the side plate nip portion of the connecting portion along a length direction of the side plate, and the first The base limiting portion is an open slot that is disposed to open upward of the cavity.
  • At least one of the side panel engaging portions is further provided with a second side panel limiting portion
  • the at least one base engaging portion is provided with a second base limit at a position corresponding to the second side panel limiting portion. a position, wherein the second side plate limiting portion cooperates with the second base limiting portion in a state in which the side plate is folded to block the side plate engaging portion from being disengaged from the base engaging portion.
  • the second side plate limiting portion is a part of the side plate engaging portion, and the second base limiting portion is a protrusion protruding from an upper side of the base engaging portion, wherein In a state in which the side panels are folded, the side panel engaging portion is located below the base engaging portion.
  • the second base limiting portion is located between the base engaging portion and a side wall of the concave cavity facing the inside of the folding box.
  • the folding box further includes a third side panel limiting portion, the third side panel limiting portion is arranged such that the third side panel is restricted in a state where the side panel is folded The portion cooperates with the base engaging portion to block the side plate from coming off the base in a direction toward the inside of the folding box.
  • the third side plate limiting portion integrally extends from the side plate engaging portion along an extending direction of the side plate engaging portion.
  • the folding box further includes a third side panel limiting portion and a third base limiting portion, wherein the third side panel limiting portion is arranged such that in a state where the side panel is folded, The third base limiting portion cooperates with the side plate limiting portion to block the side plate from coming off the base in a direction toward the inside of the folding box.
  • the third side plate limiting portion is a protrusion protruding from an outer side of the connecting portion, and the third base limiting portion is a groove in the concave cavity, and In the state in which the side panels are folded, the projections are placed in the grooves.
  • each of the two adjacent connecting portions is provided with a side plate engaging portion, and each of the concave cavities is provided with two base engaging portions, wherein the The nip portions of the two adjacent connecting portions respectively engage with the two base engaging portions, and the two adjacent connecting portions are in the process of folding the side plate relative to the base It is rotatable about the two base nips respectively.
  • the occlusal portions of the two adjacent connecting portions respectively extend from the respective connecting portions.
  • the two base nips together form a T-shaped structure.
  • the outer side of the side plate engaging portion is provided with a hinge shaft extending along the longitudinal direction of the side plate, and both ends of the concave cavity of the base are provided with a hinge shaft receiving portion, wherein The hinge shaft is received in the hinge shaft receiving portion and is rotatable about an axis within the hinge shaft receiving portion.
  • the outer end of the hinge shaft extends along the axial direction of the hinge shaft, and the two ends of the cavity of the base are provided with a hanging platform, wherein in a state where the side plate is upright, The positioning portion is engaged with the hanging platform.
  • a limiting rod is connected between the two side plate engaging portions, and a side wall of the concave cavity facing the inner side of the folding box is provided with a limiting protrusion facing the inner side of the folding box. Wherein in the folded state of the side panel, the limiting rod cooperates with the limiting protrusion to block the side panel from coming out of the base.
  • the limiting rod is further provided with a side panel mounting guide to assist in the installation of the side panel.
  • the inside of the retaining edge of the base is provided with a cavity extending along the extending direction of the retaining edge.
  • the cavity is a closed cavity.
  • a folding box comprising a base and two pairs of opposite side panels hinged to the base and foldable relative to the base
  • the base has a plate-shaped body and two pairs of opposite retaining edges surrounding the periphery of the plate-shaped body, wherein
  • the bottom of the side plate extends a plurality of connecting portions spaced apart from each other, and each of the two adjacent connecting portions is provided with at least one side plate engaging portion;
  • a retaining cavity of the base is provided with a cavity at a position corresponding to the connecting portion, and each of the recesses is provided with at least two of the base engaging portions, wherein the base engaging portion is arranged to be When the side panel is hinged to the base, the base engaging portion is engaged with the corresponding side panel engaging portion, and the side panel engaging portion is disposed in a process of folding the side panel relative to the base. Being rotatable about the base occlusion; and
  • the bottom of the side plate is further provided with a first side plate limiting portion, and the base is provided with a first base limiting portion at a position corresponding to the first side plate limiting portion, wherein In a state in which the side panel is upright, the first side panel limiting portion cooperates with the first base limiting portion to block the side panel from eversion.
  • the interior of at least one pair of the two opposite pairs of retaining edges is provided with a first closed cavity extending along a length extension of the retaining edge, and/or the plate-shaped body A second closed cavity is disposed, and the second closed cavity protrudes from a major surface of the plate-like body.
  • each of the connecting portions extends from one side of the side plate engaging portion, and each of the concave cavities is provided with two base engaging portions, and the two base engaging portions are formed together. T-shaped structure.
  • the occlusal portions of the two adjacent connecting portions respectively extend from the respective connecting portions.
  • the first side plate limiting portion is a rib extending from a side opposite to the side plate engaging portion of the connecting portion along a length direction of the side plate, and the first base The limiting portion is an open groove that is disposed to open upward of the cavity.
  • a folding box including a base and two pairs of opposite side panels hinged to the base and foldable relative to the base
  • the base has a plate-like body and two pairs of opposite retaining edges surrounding the plate-shaped body, wherein
  • the bottom of the side plate extends a plurality of connecting portions spaced apart from each other, and the connecting portion is provided with a side plate engaging portion;
  • a retaining edge of the base is provided with a cavity at a position corresponding to the connecting portion, and the cavity is provided with a base engaging portion, wherein the base engaging portion is arranged to be hinged to the side plate when the side plate is hinged
  • the base engaging portion is engaged with the side plate engaging portion, and the side plate engaging portion is disposed to be rotatable around the base engaging portion during folding of the side plate relative to the base;
  • the bottom of the side plate is further provided with a first side plate limiting portion, and the base is provided with a first base limiting portion at a position corresponding to the first side plate limiting portion, wherein In a state in which the side panel is upright, the first side panel limiting portion cooperates with the first base limiting portion to block the side panel eversion; and
  • a first cavity extending along a length direction of the side plate is disposed inside the bottom guard of the side plate, and a second cavity extending along an extending direction of the retaining edge is disposed inside the retaining edge of the base plate .
  • the first cavity and the second cavity are closed cavities.
  • a folding box including a base and two pairs of opposite side panels hinged to the base and foldable relative to the base
  • the base has a plate-like body and two pairs of opposite retaining edges surrounding the plate-shaped body, wherein
  • the bottom of the side plate extends a plurality of connecting portions spaced apart from each other, the connecting portion is provided with a side plate engaging portion, and the outer side of the side plate engaging portion is provided with a hinge extending along the length of the side plate axis;
  • a concave cavity is disposed at a position corresponding to the connecting portion on a retaining edge of the base, a middle portion of the concave cavity is provided with a base engaging portion, and two ends of the concave cavity are provided with a hinge shaft receiving portion.
  • the base engaging portion is arranged such that when the side plate is hinged to the base, the base engaging portion is engaged with the side plate engaging portion, and the side plate engaging portion is disposed at the side plate relative to the side plate
  • the base can be rotated about the base engaging portion, and the hinge shaft is received in the hinge shaft receiving portion and rotatable about an axis in the hinge shaft receiving portion;
  • the bottom of the side plate is further provided with a first side plate limiting portion, and the base is provided with a first base limiting portion at a position corresponding to the first side plate limiting portion, wherein In a state in which the side panel is upright, the first side panel limiting portion cooperates with the first base limiting portion to block the side panel from eversion.
  • the outer end of the hinge shaft extends along the axial direction of the hinge shaft to form a positioning portion, and the two ends of the cavity of the base are provided with a hanging platform, wherein the side plate is upright The positioning portion is engaged with the hanging platform.
  • a connecting rod is connected between the two side plate engaging portions, and a sidewall of the concave cavity facing the inner side of the folding box is provided with a limiting protrusion facing the inner side of the folding box. And in the folded state of the side panel, the limiting rod cooperates with the limiting protrusion to block the side panel from coming out of the base.
  • the inside of at least one pair of the two opposite pairs of retaining edges is provided with a first closed cavity extending along a length extending direction of the retaining edge, and/or arranged on the plate-shaped body There is a second closed cavity, and the second closed cavity protrudes from the main surface of the plate-like body.
  • the folding box of the present invention is high in strength and easy to clean.
  • FIG. 1 is a perspective view of a folding box in which an upright state is in accordance with an embodiment of the present invention.
  • FIG. 2 is an exploded perspective view of the folding box of FIG. 1, in which only two different perspective views of one base and one long side panel are shown for clarity.
  • 3A-3C are enlarged views respectively showing three parts A, B, and C of Fig. 2.
  • FIG. 4A is a schematic view of a portion of the base of the folding box of FIG. 1, showing the structure of the base and side panel connecting portions.
  • FIG. 4B is a schematic view of a portion of the base of the folding box of FIG. 1, showing the structure of the base and side panel connecting portions as seen from a different perspective from FIG. 4A.
  • Figure 5 is a schematic view showing the structure of the folding box of Figure 1 in a state in which one long side plate is upright.
  • Fig. 6 is an enlarged schematic view showing a portion D of Fig. 5.
  • Fig. 7 is an enlarged schematic view showing a portion E of Fig. 5.
  • Figure 8 is a partial view of the folding box with the side panels attached to the base and in a folded condition, with portions of the structure being cut away for clarity.
  • Figure 9 is an exploded perspective view of a folding box in accordance with another embodiment of the present invention, wherein for clarity, only two different perspective views of one base and one long side panel are shown.
  • Figure 10 is a partial enlarged view of the folding box of Figure 9.
  • Figure 11 is another partial enlarged view of the folding box of Figure 9.
  • Figure 12 is a perspective view of the folding box of Figure 9 with the folding box in a folded condition.
  • Fig. 13 is an enlarged view of a portion F of Fig. 12.
  • Figure 14 is a partial enlarged view of the folding box of Figure 9 with the side panels in an upright position.
  • Figure 15 is a partially cutaway enlarged view of the folding box of Figure 9 with the side panels in an upright position.
  • Figure 16 is another partially cutaway enlarged view of the folding box of Figure 9 with the side panels in an upright position.
  • Figure 17 is a perspective view of a modification of the folding box of Figure 9, in which one side panel is in an upright state and the other side panel is in a folded state.
  • Figure 18 is a perspective view of the long side panel of the folding box of Figure 17, showing only a portion for clarity.
  • Fig. 19 is an enlarged view of a portion G of Fig. 17;
  • Figure 20 is a perspective view of still another modification of the folding box of Figure 9, in which one side panel is in an upright state and the other side panel is in a folded state.
  • Fig. 21 is an enlarged view of a portion H of Fig. 20.
  • Figure 22 shows a partial perspective view of the folding box partially cut away to show the internal structure.
  • Figures 23a-23b respectively show the deformation of the base retaining edge with cavities of different cross-sections, taken along the y-axis with respect to the x, z direction when the base is loaded.
  • Fig. 23c and Fig. 23d respectively show a schematic view of the local edging of the base retaining edge in the yz section when the base is under pressure.
  • Figure 24 is a cross-sectional view of the base of the folding box in accordance with an embodiment of the present invention.
  • Figure 25 is a cross-sectional view of the base of Figure 24 in another direction.
  • Figure 26 is a perspective view of a base of a folding box in accordance with another embodiment of the present invention.
  • Figure 27 is a cross-sectional view of the base of Figure 26.
  • Figure 28 is a perspective view of a base of a folding box in accordance with still another embodiment of the present invention.
  • FIG. 29 is a cross-sectional view of the base of FIG. 28.
  • Figure 30 is a perspective view of a base of a folding box in accordance with still another embodiment of the present invention.
  • FIG. 31 is a cross-sectional view of the base of FIG. 30.
  • Fig. 32 is a view showing the structure in which two folding boxes are stacked on each other, and for the sake of clarity, the folding box located above removes the side plates.
  • Figure 33 is a partial cross-sectional elevational view of the folding box of Figure 32 stacked on each other.
  • Figure 34 is an enlarged view of a portion I of the folding box of Figure 33.
  • Figure 35 is a partial cross-sectional side view of the folding box of Figure 32 stacked on each other.
  • Figure 36 is an enlarged view of a portion J of the folding box of Figure 35.
  • FIG. 1 shows a folding box of the present invention.
  • the folding box 1 includes a base 2, a pair of opposite long side plates 3 and 4, and a pair of opposite short side plates 5 and 6.
  • the side panels are hinged to the base 1 and are foldable relative to the base 1.
  • the left and right sides of each side plate are provided with engaging portions, and in the state in which the side plates are upright, the engaging portions on the left and right sides of the adjacent side plates are engaged with each other.
  • Locking mechanisms 7 and 8 are also provided on the short side plates 5 and 6, respectively, and the locking mechanisms 7 and 8 are used to lock the adjacent long side plates and short side plates to each other.
  • the structure of the occlusal portions on the left and right sides of the side panels and the structure of the locking mechanisms 7 and 8 may employ any suitable structure known in the art or to be developed, and will not be described in detail herein.
  • 2 to 4B illustrate the structure of a connecting portion of a side panel and a base according to an embodiment of the present invention.
  • 2 to 4B show only the connection structure on the long side plates 3 and 4, and the connection structure on the short side plates 5 and 6 is substantially the same as the connection structure on the long side plate, and will not be described in detail herein.
  • the long side panel 3 has a body 31.
  • the bottom of the long side panel extends a plurality of connecting portions 32 spaced apart from each other.
  • a side plate engaging portion 33 is provided on each of the connecting portions 32.
  • each of the connecting portions 32 is provided with two ribs 37 spaced apart from each other integrally extending from the bottom of the long side plate.
  • the inner sides of the bottom ends of the two ribs 37 respectively extend in the opposite directions along the longitudinal direction of the long side plate 3 out of the side plate engaging portion 33.
  • the two side plate engaging portions 33 are connected to each other by a connecting rod 38.
  • the connecting rod 38 is mainly used as a limiting function for preventing the side plate from being disengaged from the base in the folded state, and thus may also be referred to as a limiting rod, which will be described in further detail below.
  • the middle portion of the connecting rod 38 is also formed with a guide portion 33 for guiding the long side plate when the long side plate is mounted to the base.
  • the outer sides of the two ribs 37 respectively extend out of the hinge shaft 34 in opposite directions along the longitudinal direction of the long side plate 3.
  • the outer end of the hinge shaft extends in the axial direction of the hinge shaft with a positioning portion 35, wherein the positioning portion engages with the hanging platform on the base in a state where the side plate is upright, which will be further described below.
  • the positioning portion 35 can be formed by cutting a part of the end of the hinge shaft 34, that is, the positioning portion 35 is formed by the end portion of the hinge shaft.
  • the base 2 includes a body 21.
  • the body 21 is provided with a pair of opposing retaining edges 22 and 23 and another pair of opposing retaining edges 24 and 25.
  • a pair of opposing long side panels 3 and 4 are mounted on the trim edges 22 and 23, respectively, and a pair of opposed short side panels are mounted on the trim edges 24 and 25, respectively.
  • Each trim is provided with a structure for mating with a corresponding structure on the bottom (ie, the lower side) of the side panel.
  • a description will be given of an example of a base structure that cooperates with a corresponding structure on the lower side of the long side plate 3 on the bezel 22.
  • the corresponding structures on the retaining edges 24 and 25, that is, the structures that cooperate with the corresponding structures on the underside of the short side panels, and the corresponding structures on the retaining edges 23 are substantially identical to the corresponding structures on the retaining edges 22, and are not described in detail herein. Said.
  • the retaining edge 22 of the base 2 is provided with a cavity 221 at a location corresponding to the connecting portion 32.
  • the opening of the cavity 221 faces the top and the inside of the 22 guard.
  • the base occluding portion 222 extends integrally from the bottom surface of the cavity 221, wherein when the side plate 3 is hinged to the base 2, the base engaging portion 222 engages with the side plate engaging portion 33.
  • the base engaging portion 222 is located at or near the inside of the retaining edge 22 of the base.
  • the base engaging portion 222 includes two columns 225 that are spaced apart from each other and extend from the bottom surface of the cavity 221. The tops of the two columns are integrally formed with a connecting rod 224.
  • Both sides of the connecting rod 224 serve as a snap structure, that is, the base engaging portion 222 is substantially T-shaped.
  • a guide hole 229 is defined between the two pillars 225 of the base engaging portion 222 and the connecting rod 224.
  • a projection 223 that protrudes inward is formed on the top of the side wall of the cavity 221 facing the inside of the folding box.
  • the connecting rod 38 on the side panel 3 is located below the projection 223 and is blocked by the projection 223 without being disengaged from the base 2.
  • a hinge shaft receiving portion 226 and a limit hanging table 227 are formed on both sides of the cavity 221.
  • the hinge shaft 34 on the side panel 3 is housed in the hinge shaft receiving portion 226 and is rotatable therein. In a state where the side plates are upright, the positioning portion 35 on the end of the hinge shaft 34 of the side plate 3 engages with the hanging table 227, thereby enhancing the joint strength between the side plates and the base, as shown in FIG.
  • Figure 7 shows an enlarged view of a portion of the base 2 with a portion of the base cut away to show the internal structure of the base.
  • a cavity 228 is provided inside the bezel 22 of the base 2.
  • the cavity 228 is located below the cavity 221.
  • the cavity 228 extends along the length of the guard edge 22.
  • the length of the cavity 228 is slightly less than the length of the trim 22, for example about two walls thicker than the length of the trim.
  • cavity 228 is a closed cavity.
  • the cavity 228 is formed by gas-assisted injection molding.
  • FIGS. 5-6 show that the long side panel 3 is attached to the base 2 and is in an upright position.
  • the engaging portion 33 at the bottom of the long side panel 3 and the engaging structure 224 on the base are engaged with each other.
  • the hinge shaft at the bottom of the long side plate 3 is located 34 in the hinge shaft receiving portion 226 of the base 2, and the positioning portion 35 formed at the end of the hinge shaft engages with the hanging platform 227 of the base, and the guide portion on the long side plate 3 33 passes through the guide hole 229 of the base 2.
  • Fig. 8 shows that the long side panel 3 is attached to the base 2 and is in a folded state.
  • the connecting rod 38 on the side panel which serves as a limiting feature, is located below the projection 223 of the base, thereby preventing the side panel 3 from being disengaged upwardly from the base.
  • the connecting rod 38 is also located between the base engaging portion 222 and the side wall of the recess of the base facing the inside of the folding box, thereby restricting the side panel from coming out of the base inward or outward when the folding box is in the folded state.
  • FIGS. 9-12 illustrate structural views of a folding box 10 in accordance with another embodiment of the present invention.
  • the basic components of the folding box are the same as those of the above embodiment, and the main difference is the structure of the connecting portion of the side plate and the base, and the rest are the same and will not be described in detail herein.
  • the lower side of the side panel 30 is provided with a nip portion 301, also referred to as a side panel nip portion 301.
  • the base 20 is provided with a corresponding base engaging portion 205 which is rotatable about the base engaging portion during folding of the side panel 30 relative to the base 20.
  • the lower side of the side panel 30 integrally extends out of the connecting portion 302.
  • the end portion of the connecting portion 302 extends from the nip portion 301 along the longitudinal direction of the side plate on one side.
  • the nip portions extending from one side of the ends of the adjacent two connecting portions 302 extend in opposite directions, and the adjacent two nip portions constitute a set of occlusal structures.
  • the other side of the connecting portion 302 opposite to the engaging portion extends out of the limiting portion 303, which is also referred to as a side plate limiting portion.
  • the limiting portion 303 may be a rib or a protrusion extending downward from the bottom of the side panel.
  • the base 20 includes a body 206.
  • the body 206 is provided with a pair of opposing trims 201 and 203 and another pair of opposing trims 202 and 204.
  • a pair of opposing long side panels are mounted on the trim edges 201 and 203, respectively, and a pair of opposing short side panels are mounted on the trim edges 202 and 204, respectively.
  • Each trim is provided with a structure for mating with a corresponding structure on the bottom (ie, the lower side) of the side panel.
  • the base structure on the side edge 201 that cooperates with the corresponding structure on the lower side of the long side plate will be described as an example.
  • the corresponding structures on the retaining edges 202 and 204 that is, the structures that cooperate with the corresponding structures on the underside of the short side panels, and the corresponding structures on the retaining edges 203, are substantially identical to the corresponding structures on the retaining edges 201, and are not described in detail herein. Said.
  • the retaining edge 201 of the base 20 is provided with a recess 207 at a location corresponding to the connecting portion 302.
  • the opening of the cavity 207 faces the top and the inside of the bezel 201.
  • the base occluding portion 208 extends integrally from the bottom surface of the cavity 221, wherein the base engaging portion 208 engages with the side plate engaging portion 301 when the side plate is hinged to the base.
  • the base nip 208 is located at or near the inside of the bezel 201 of the base.
  • the base engaging portion 208 includes two uprights 209 that are spaced apart from one another and extend integrally from the bottom surface of the cavity 207.
  • the tops of the two columns are integrally formed with a connecting rod 210. Both sides of the connecting rod 210 serve as a snap structure.
  • the two uprights 209 of the base engaging portion 208 and the connecting rod 210 together form a T-shaped structure, that is, the base engaging portion 208 is substantially T-shaped.
  • the side of the connecting rod 210 facing away from the inside of the folding box is formed with a projection 211, that is, the projection 211 is located between the base engaging portion 208 and the side wall of the recess 207 facing the inside of the folding box.
  • the engaging portion 301 on the side panel 30 is located below the projection 211 and is blocked by the projection 211 to hinder the side panel 30 from being disengaged upward from the base 20.
  • a limited position groove 212 is also formed on both sides of the cavity 207.
  • the limiting slot 212 is an open slot with an opening facing upward. In a state in which the side plates are upright, the limiting portion 303 of the side plate 30 is inserted into the limiting groove 212, thereby hindering further eversion of the side plates.
  • a slit 213 is further provided on a side of the limiting groove 212 near the inside of the folding box. The slit 213 provides a relief space for the limit 303 to be inserted into the limit slot or to be disengaged from the limit slot.
  • FIGS 12 and 13 show that the long side panel 30 is attached to the base 20 and is in a folded state. As shown in Figures 12 and 13, when the side panel 30 is in the folded state, one side 301a of the engaging portion 301 on the side panel cooperates with the projection 211 on the base and is located below the projection 211 of the base, thereby preventing the side panel 3 Disengage the base upwards.
  • FIGS. 14-16 show partial views of the long side panel 30 attached to the base 20 and in an upright position.
  • the engaging portion 301 at the bottom of the long side plate 30 and the engaging portion 208 on the base are engaged with each other.
  • the limiting portion 303 at the bottom of the long side plate 30 is inserted into the limiting groove 212 of the base 20, thereby preventing the side plate 30 from further eversion.
  • a cavity 214 is provided inside the bezel 201 of the base 20.
  • the cavity 214 is located below the cavity 207.
  • the cavity 214 extends along the length of the bead 201.
  • the length of the cavity 214 is slightly less than the length of the trim 201, for example about two walls thicker than the length of the trim.
  • the cavity 214 is a closed cavity.
  • the cavity 214 is formed by gas-assisted injection molding.
  • a cavity 39 is also provided inside the bottom trim of the side panel. Cavity 39 is similar to cavity 214. The cavity 39 extends along the length of the side panel and is a closed cavity. Preferably, the cavity 39 is formed by gas-assisted injection molding.
  • the engaging portion 401 of the side plate 40 further includes a limiting portion 401a extending from the body of the engaging portion.
  • the stopper portion 401a is disposed such that the restraining portion 401a engages with the side panel engaging portion in a state where the side panel is folded to block the side panel engaging portion 401 from coming off the base in a direction toward the inside of the folding box.
  • the size of the nip portion 401 can also be made larger to achieve the same function as the above-described stopper portion 401a.
  • FIG. 20-21 are structural views showing another modification of the folding box shown in Fig. 9. This modification is different from the folding box shown in FIG. 9 in that the connecting portion 502 at the bottom of the side plate 50 of the folding box 102 of the present embodiment is different from the connecting portion 302 shown in FIG. 9, and the base 60 is provided thereon.
  • the structure matching the connection portion is the same and will not be described in detail herein.
  • the connecting portion 502 of the side panel 50 further includes a limiting projection 502a extending from one side of the connecting portion.
  • the structure of the base 60 is substantially the same as that of the base structure shown in FIG.
  • the groove 601 is provided in the cavity at a position corresponding to the limiting protrusion 502a, and the rest are the same, and will not be described in detail herein.
  • the limiting projections 502a cooperate with the base recess 601 to block the side panels from coming off the base in a direction toward the inside of the folding box.
  • side panels may also be prevented from disengaging from the base in a direction toward the interior of the folding box by other means or structures.
  • Figure 22 shows a partial perspective view of the folding box partially cut away to show the internal structure.
  • the side plate and the base correspond to extensions in three directions of x, y, and z.
  • the hinge is placed along the x-direction of the long side panel.
  • the side panel reinforcement that is, the cavity has a certain thickness in the vertical direction y-axis along the direction in which the hinge is disposed.
  • the base reinforcement (ie, the cavity) is disposed along the x direction.
  • the base is arranged with a cargo bearing surface having a radiation area along the x, z axis direction.
  • the hinges of the side plate and the base have corresponding fulcrums, and the side plate fulcrums A and B corresponding to the base fulcrums A and B are offset in the Z-axis direction to form a lever to resist the hinged position of the sag side plate and the base when the base is loaded
  • the internal offset forms the first portion of the base reinforcement.
  • the lower edge of the side panel is provided with a reinforcing portion and a base reinforcing portion to form a second portion of the base reinforcement.
  • the side plate reinforcement portion and the base reinforcement portion at the hinge portion increase the deformation resistance of the hinge portion in the x, y, and z-axis directions (the base y-axis negative direction and the base are supported when the base is loaded by force) When the area is sunken, the base guard edge is forced to shift toward the z-axis).
  • Figures 23a-23b respectively show the deformation of the base retaining edge with cavities of different cross-sections, taken along the y-axis with respect to the x, z direction when the base is loaded.
  • Fig. 23a is an inverted U-shaped open cavity view
  • Fig. 23b is a closed type cavity.
  • the two sides of the different cavity sections have different bending resistance when the base retaining edges are relatively fixed and a certain pressure is applied in the middle. At the same pressure, the deformation of the open cavity reaches 50, while the deformation of the closed cavity is only 46.
  • the closed cavity retaining edge has better resistance to deformation.
  • Fig. 23c and Fig. 23d respectively show a schematic view of the local edging of the base retaining edge in the yz section when the base is under pressure.
  • the closed cavity has a decreasing tendency compared with the open cavity, that is, the angle between the base retaining section and the y-axis is a1>a2. It can be seen that the closed base retaining cavity is more resistant to twisting deformation, that is, the base retaining edge is twisted.
  • the closed base retaining cavity effectively improves the base deformation, thereby enhancing the load carrying capacity of the base.
  • the base 1a has a plate-like body 1a1 and a guard 1a2.
  • a through hole 1a11 is distributed in the plate-like body 1a1.
  • a closed cavity 1a3 is arranged on the periphery of the plate-like body 1a1.
  • the closed cavity 1a3 protrudes from the main surface 1a4 of the plate-like body and extends parallel to the retaining edge.
  • the main surface 1a4 faces away from the retaining edge of the base.
  • the closed cavity 1a3 may be arranged only on a pair of sides of the two opposite sides of the plate-like body. This situation can also significantly increase the strength of the base.
  • the closed cavity 1a3 is formed by a gas-assisted molding process.
  • 26-27 are structural views showing a base 1b of a folding box according to another embodiment of the present invention. 26-27, the main difference between this embodiment and the embodiment of Figs. 24-25 is that the guard 1b2 of the base 1b and the plate-like body 1b1 are each provided with a closed cavity. The rest are basically the same and will not be described in detail here.
  • a first closed cavity 1b3 is disposed on the bezel 1b2 of the base 1b.
  • the first closed cavity 1b3 is disposed inside the at least one pair of the two pairs of opposing retaining edges and extends along the length of the retaining edge.
  • a second closed cavity 1b4 is disposed on the plate-like body 1b1.
  • the second closed cavity 1b4 disposed on the plate-like body is closer to the inner side of the plate-shaped body with respect to the first closed cavity 1b3 disposed on the bead.
  • FIGS 28-29 are structural views of a base 1c of a folding box according to still another embodiment of the present invention.
  • the main difference between this embodiment and the embodiment of Figures 26-27 is that the cavity 1c3 disposed on the bezel 1c2 is an open cavity, and the cavity 1c4 on the plate-like body 1c1. It is a closed cavity. The rest are the same and will not be described in detail here.
  • FIGS 30-31 are structural views of a base 1d of a folding box according to still another embodiment of the present invention.
  • the cavity disposed on the plate-like body 1d1 of the base 1d is a cross-shaped cavity, that is, a plate-shaped body of the base 1d.
  • Two closed cavities 1d3 and 1d4 intersecting each other are arranged on the 1d1. The intersection of the two closed cavities is at the center of the base. The ends of each of the closed cavities extend to the edge of the base. The two closed cavities are connected to each other. The rest are the same and will not be described in detail here.
  • FIG. 32-36 show structural views of two folding boxes stacked one on another, wherein the bases of the two folding boxes employ a base 1b as shown in FIG.
  • the top of the side panel 70 of the folding box is provided with a side panel limiting portion 701.
  • the side plate limiting portion 701 is a protrusion that protrudes from the top surface of the side plate.
  • a base stopper portion 1b5 is provided at the bottom of the base 1b.
  • the base limiting portion 1b5 is a groove provided at the periphery of the base.
  • the side plate limiting portion 701 and the base limiting portion 1b are arranged such that when the two folding boxes are stacked, the base limiting portion 1b of the upper folding box cooperates with the side plate limiting portion 701 of the folding box located below, thereby The relative position between the base of the folding box located above and the side panel of the folding box located below is fixed. Further, the closed cavity 1b4 of the convex bottom surface on the base 1b also serves as a stopper. Thus, when the two folding boxes are stacked on each other, the closed cavity of the folding box located above is inside the side plates of the folding box located below. Thereby, the side panel of the folding box located below is defined between the base limiting portion of the upper folding box and the convex closed cavity.
  • This position is defined to achieve the relative deformation of the side panels when the side panels of the folding box are pressed by the cargo, and at the same time, the opposite fixed support points are formed on the opposite two sets of retaining edges of the base, so that the base is at its retaining edge.
  • the support frame of the base retaining edge is formed in a fixed support manner, and the downward deformation of the base is achieved when the base is loaded by the cargo, thereby achieving the double reinforcing effect of the side plate and the base.
  • the hinge between the side panel and the base may be provided with a side panel hinge at the bottom of the side panel, and a corresponding base hinge portion is disposed on the retaining edge of the base, so that the side panel The hinge is hinged to the base hinge to hinge the side panel to the base.
  • the side panel hinge portion described above and the side panel engaging portion on the above-mentioned connecting portion may be the same portion or different portions.
  • the above-described base hinge portion and the above-described base engaging portion may be the same portion or different portions.
  • the side panel engaging portion can rotate around the base engaging portion, the side panel hinge portion and the side panel engaging portion are the same portion, and the above-mentioned base hinge portion and the above-mentioned base engaging portion For the same part.
  • connection structure between the side plate and the base of the folding box of the invention is simple, the bite strength is high, the size of the base guard edge can be relatively small, and the operation is convenient and easy to clean.
  • the base is provided with a closed cavity, so that the base has better resistance to twisting and deformation in each direction of force.
  • the base can better resist the downward depression of the base after being pressed, so as to solve the problem of crushing between the inner recessed goods after the base of the box is pressed, and improve the safety of the transport after the folding box carries the goods. reliability. In the case of drops and collisions, the stress can be more evenly distributed, thereby increasing the service life of the folding box.

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Abstract

一种折叠箱（1），底座（2）具有板状本体（21）和围绕板状本体四周的两对相对的护边（22,23,24,25），两对相对的侧板（3,4,5,6）铰接于底座的护边并可相对于底座折叠。侧板的底部设有侧板铰接部，底座的护边（22,23,24,25）上设有相对应的底座铰接部，其中侧板铰接部铰接于底座铰接部而将侧板铰接于底座。两对相对的护边（22,23,24,25）中的至少一对护边的内部设有沿护边的长度延伸方向延伸的第一密闭空腔（1b3），和/或板状本体上布置有第二密闭空腔（1b4），且第二密闭空腔凸出板状本体的主表面。该折叠箱强度高、操作方便且易于清洗。

Description

折叠箱
相关申请交叉引用
本专利申请要求于2017年4月10日提交的、申请号为201710229768.X、发明名称为“折叠箱”的中国专利申请的优先权，上述申请的全文以引用的方式并入本文中。
技术领域
本发明涉及容器，具体涉及折叠箱。
背景技术
现有折叠箱在使用时，侧板要相对展开直立，四块侧板互锁，从而形成相对封闭的空间来容纳货物，而在货物清空后，箱体需要被回收，为了更大化节约成本，将箱体侧板进行折叠，而使得在同等的空间内能容纳更多的箱体回收。回收过程中要便于清洁，特别是当折叠箱用来装载蔬果生鲜等食品时，使用后清洁尤为重要。同时，箱体要在使用中既要保证在其装载的货物时安全可靠，又要在箱内货物清空时侧板要简单快捷的解锁并折叠。
现有的折叠箱专利，例如US7100786B2中公开的折叠，箱体主体结构由薄壁以及在其表面加强筋的布置组成，底座铰链安装位置由于弹性安装需要，其结构单一且薄弱。底座成型后有较多的成型未封闭的空腔，网格筋其凹陷部位在快速清洗时易于残留污物，效率低。尤其是在底座护边位置，由于需要和侧板的铰链装配和底座成型的需要，其底座存有大量且较深的空腔，此区域清洗时会流入大量的污水，不易排出，容易滋生细菌。
此外，这种单薄壁结构在抗弯抗压形式上能力单一，尤其是在侧板与底座铰接部位，由单一薄壁衔接侧板主体与铰链，尤其是在箱体承载密度较大的货物时，底座内表面受压而向下凹陷，此时的侧板因其铰链与底座护边铰接，护边会随着底座内凹陷而向内趴，侧板靠近铰链一侧也随机受护边的牵引而向内侧并向下形变弯曲。因此，现有折叠箱中，侧板近铰链部位在其承载加大时，不能对抗底座护边向内趴的形变，而使得箱体底座更容易内凹陷，引起底座护 边内趴而进一步导致侧板内变形。在使用其多层箱体堆垛时，上层的货物则会与底座薄壁变形下沉与在其下面的箱体内货物受压，在一定程度上对货物存在安全隐患，且箱体重复使用时，箱体的频繁的高低温环境中使用受力变形易导致疲劳损伤，减短了箱体的使用寿命。
发明内容
本发明的目的是提供一种强度高且易于使用和清洁的折叠箱。
为实现上述目的，根据本发明的一方面，提供了一种折叠箱，所述折叠箱包括底座和两对相对的侧板，所述底座具有板状本体和围绕所述板状本体四周的两对相对的护边，所述两对相对的侧板铰接于所述底座的护边并可相对于所述底座折叠，其中，所述侧板的底部设有侧板铰接部，所述底座的护边上设有相对应的底座铰接部，其中所述侧板铰接部铰接于所述底座铰接部而将所述侧板铰接于所述底座；以及所述两对相对的护边中的至少一对护边的内部设有沿所述护边的长度延伸方向延伸的第一密闭空腔。
一实施例中，所述侧板的底部延伸出相互间隔开的多个连接部，所述连接部设有侧板咬合部；以及所述底座的护边上设有底座咬合部，其中所述底座咬合部布置成当所述侧板铰接于所述底座时，所述底座咬合部与所述侧板咬合部咬合。
一实施例中，所述底座的护边上在与所述连接部对应的位置处设有凹腔，所述底座咬合部设置于所述凹腔内，以及所述侧板咬合部设置成在所述侧板相对于所述底座折叠的过程中，能够围绕所述底座咬合部旋转。
一实施例中，所述侧板的底部还设有第一侧板限位部，且所述底座上在与所述第一侧板限位部相对应的位置处设有第一底座限位部，其中在所述侧板直立的状态下，所述第一侧板限位部与所述第一底座限位部配合以阻碍所述侧板外翻。
一实施例中，所述板状本体上布置有第二密闭空腔，且所述第二密闭空腔凸出所述板状本体的主表面。
一实施例中，所述第二密闭空腔设置于所述板状主体的背向所述护边的主表面上。
一实施例中，所述板状主体上布置有平行于一条所述护边延伸的至少两个 所述第二密闭空腔。
一实施例中，所述底座的四周布置有两对相对的所述第二密闭空腔。
一实施例中，所述底座上布置有两条相互交叉的所述第二密闭空腔，且两条所述第二密闭空腔的交叉点位于所述底座的中心。
一实施例中，所述侧板的底部内部设有沿所述侧板的长度方向延伸的第三密闭空腔。
一实施例中，每条所述第二密闭空腔的两端延伸至所述底座的边缘。
一实施例中，所述侧板的底部延伸出相互间隔开的多个连接部，所述连接部设有侧板咬合部；所述底座的护边上在与所述连接部对应的位置处设有凹腔，所述凹腔内设有底座咬合部，其中所述底座咬合部布置成当所述侧板铰接于所述底座时，所述底座咬合部与所述侧板咬合部咬合，并且所述侧板咬合部设置成在所述侧板相对于所述底座折叠的过程中，能够围绕所述底座咬合部旋转；以及所述侧板的底部还设有第一侧板限位部，且所述底座上在与所述第一侧板限位部相对应的位置处设有第一底座限位部，其中在所述侧板直立的状态下，所述第一侧板限位部与所述第一底座限位部配合以阻碍所述侧板外翻。
一实施例中，所述板状本体的厚度为3mm～5mm。
一实施例中，所述侧板的顶部设有侧板限位部，所述底座的底部设有底座限位部，其中所述侧板限位部和所述底座限位部布置成在两个所述折叠箱堆叠时，位于上方的折叠箱的所述底座限位部与位于下方的折叠箱的所述侧板限位部配合，从而使得位于上方的折叠箱的底座与位于下方的折叠箱的侧板之间的相对位置固定。
根据本发明的另一方面，提供了一种折叠箱，所述折叠箱包括底座和两对相对的侧板，所述底座具有板状本体和围绕所述板状本体四周的两对相对的护边，所述两对相对的侧板铰接于所述底座的护边并可相对于所述底座折叠，其中，所述侧板的底部设有侧板铰接部，所述底座的护边上设有相对应的底座铰接部，其中所述侧板铰接部铰接于所述底座铰接部而将所述侧板铰接于所述底座；以及所述板状本体上布置有密闭空腔，且所述密闭空腔凸出所述板状本体的主表面。
一实施例中，所述密闭空腔设置于所述板状主体的背向所述护边的主表面上。
一实施例中，所述板状主体上布置有平行于一条所述护边延伸的至少两个所述第二密闭空腔。
一实施例中，所述板状本体的四周布置有两对相对的所述密闭空腔。
一实施例中，所述底座上布置有两条相互交叉的所述密闭空腔，且两条所述密闭空腔的交叉点位于所述底座的中心。
一实施例中，所述密闭空腔的两端延伸至靠近所述底座的所述护边。
一实施例中，所述板状本体上分布有多个通孔。
一实施例中，所述板状本体的厚度为3mm～5mm。
一实施例中，所述侧板的底部延伸出相互间隔开的多个连接部，所述连接部设有侧板咬合部；以及所述底座的护边上设有底座咬合部，其中所述底座咬合部布置成当所述侧板铰接于所述底座时，所述底座咬合部与所述侧板咬合部咬合。
一实施例中，所述底座的护边上在与所述连接部对应的位置处设有凹腔，所述底座咬合部设置于所述凹腔内，以及所述侧板咬合部设置成在所述侧板相对于所述底座折叠的过程中，能够围绕所述底座咬合部旋转。
一实施例中，所述侧板的底部还设有第一侧板限位部，且所述底座上在与所述第一侧板限位部相对应的位置处设有第一底座限位部，其中在所述侧板直立的状态下，所述第一侧板限位部与所述第一底座限位部配合以阻碍所述侧板外翻。
一实施例中，所述侧板的顶部设有侧板限位部，所述底座的底部设有底座限位部，其中所述侧板限位部和所述底座限位部布置成在两个所述折叠箱堆叠时，位于上方的折叠箱的所述底座限位部与位于下方的折叠箱的所述侧板限位部配合，从而使得位于上方的折叠箱的底座与位于下方的折叠箱的侧板之间的相对位置固定。
一实施例中，所述底座的所述密闭空腔布置成当两个折叠箱相互堆叠时，位于上方的折叠箱的所述密闭空腔在位于下方的折叠箱的侧板的内侧。
根据本发明的另一方面，还提供了一种折叠箱，所述折叠箱包括底座和两对相对的侧板，所述两对相对的侧板铰接于所述底座并可相对于所述底座折叠，其中，
所述侧板的底部延伸出相互间隔开的多个连接部，所述连接部设有侧板咬 合部；
所述底座的护边上在与所述连接部对应的位置处设有凹腔，所述凹腔内设有底座咬合部，其中所述底座咬合部布置成当所述侧板铰接于所述底座时，所述底座咬合部与所述侧板咬合部咬合，并且所述侧板咬合部设置成在所述侧板相对于所述底座折叠的过程中，能够围绕所述底座咬合部旋转；以及
所述侧板的底部还设有第一侧板限位部，且所述底座上在与所述第一侧板限位部相对应的位置处设有第一底座限位部，其中在所述侧板直立的状态下，所述第一侧板限位部与所述第一底座限位部配合以阻碍所述侧板外翻。
一实施例中，所述底座咬合部从所述凹腔的底面向上延伸并与所述凹腔的面向折叠箱内侧的侧壁间隔开。
较佳地，所述凹腔的开口朝向所述护边的顶部和内侧。
一实施例中，所述侧板咬合部沿所述侧板的长度方向从所述连接部的一侧一体延伸。
一实施例中，所述第一侧板限位部为沿所述侧板的长度方向从所述连接部的与所述侧板咬合部相反的一侧延伸的筋板，以及所述第一底座限位部为设置于所述凹腔的朝上开口的开口槽。
一实施例中，至少一个所述侧板咬合部还设有第二侧板限位部，以及至少一个底座咬合部在与所述第二侧板限位部相应的位置设有第二底座限位部，其中在所述侧板折叠的状态下，所述第二侧板限位部与所述第二底座限位部配合，以阻碍所述侧板咬合部向上脱离所述底座咬合部。
较佳地，所述第二侧板限位部为所述侧板咬合部的一部分，以及所述第二底座限位部为从所述底座咬合部的上部一侧突出的凸起，其中在所述侧板折叠的状态下，所述侧板咬合部位于所述底座咬合部下方。
一实施例中，所述第二底座限位部位于所述底座咬合部与所述凹腔的面向折叠箱内侧的侧壁之间。
另一实施例中，所述折叠箱还包括第三侧板限位部，所述第三侧板限位部布置成使得在所述侧板折叠的状态下，所述第三侧板限位部与所述底座咬合部配合，以阻碍所述侧板沿朝向所述折叠箱内部的方向脱离所述底座。
一实施例中，所述第三侧板限位部从所述侧板咬合部沿所述侧板咬合部的延伸方向一体延伸出。
较佳地，所述折叠箱还包括第三侧板限位部和第三底座限位部，其中，所述第三侧板限位部布置成使得在所述侧板折叠的状态下，所述第三底座限位部与所述侧板限位部配合，以阻碍所述侧板沿朝向所述折叠箱内部的方向脱离所述底座。
一实施例中，所述第三侧板限位部为从所述连接部的外侧突出的凸起，而所述第三底座限位部为在所述凹腔内的凹槽，以及在所述侧板折叠的状态下，所述凸起置于所述凹槽内。
一实施例中，相邻的两个所述连接部中每个所述连接部各设有一个侧板咬合部，每个所述凹腔内设有两个所述底座咬合部，其中所述相邻的两个所述连接部的咬合部分别与所述两个底座咬合部咬合，并且在所述侧板相对于所述底座折叠的过程中，所述相邻的两个所述连接部能够分别围绕所述两个底座咬合部旋转。
较佳地，所述相邻的两个连接部的所述咬合部分别从各自的连接部相对向延伸。
较佳地，所述两个底座咬合部共同形成T形结构。
另一实施例中，所述侧板咬合部的外侧设有沿所述侧板的长度方向延伸的铰链轴，以及所述底座的所述凹腔的两端设有铰链轴容纳部，其中所述铰链轴容纳于所述铰链轴容纳部内并能够在所述铰链轴容纳部内围绕一轴线旋转。
较佳地，所述铰链轴的外端部沿所述铰链轴的轴向延伸出定位部，所述底座的凹腔的两端设有挂台，其中在所述侧板直立的状态下，所述定位部与所述挂台咬合。
较佳地，两个所述侧板咬合部之间连接有限位杆，所述底座的凹腔的面向所述折叠箱内侧的侧壁上设有朝向所述折叠箱内侧的限位凸起，其中在所述侧板的折叠状态下，所述限位杆与所述限位凸起配合以阻碍所述侧板脱出所述底座。
较佳地，所述限位杆上还设有侧板安装导向部，以辅助所述侧板的安装。
一实施例中，所述底座的护边内部设有沿所述护边的延伸方向延伸的空腔。
较佳地，所述空腔是密闭的空腔。
根据本发明的另一方面，提供了一种折叠箱，所述折叠箱包括底座和两对相对的侧板，所述两对相对的侧板铰接于所述底座并可相对于所述底座折叠， 所述底座具有板状本体和围绕所述板状本体四周的两对相对的护边，其中，
所述侧板的底部延伸出相互间隔开的多个连接部，相邻的两个所述连接部中每个所述连接部各设有至少一个侧板咬合部；
所述底座的护边上在与所述连接部对应的位置处设有凹腔，每个所述凹腔内设有至少两个所述底座咬合部，其中所述底座咬合部布置成当所述侧板铰接于所述底座时，所述底座咬合部与对应的所述侧板咬合部咬合，并且所述侧板咬合部设置成在所述侧板相对于所述底座折叠的过程中，能够围绕所述底座咬合部旋转；以及
所述侧板的底部还设有第一侧板限位部，且所述底座上在与所述第一侧板限位部相对应的位置处设有第一底座限位部，其中在所述侧板直立的状态下，所述第一侧板限位部与所述第一底座限位部配合以阻碍所述侧板外翻。
一实施例中，所述两对相对的护边中的至少一对护边的内部设有沿所述护边的长度延伸方向延伸的第一密闭空腔，和/或所述板状本体上布置有第二密闭空腔，且所述第二密闭空腔凸出所述板状本体的主表面。
一实施例中，每个所述连接部上从一侧延伸出一个所述侧板咬合部，每个所述凹腔内设有两个底座咬合部，且所述两个底座咬合部共同形成T形结构。
较佳地，所述相邻的两个连接部的所述咬合部分别从各自的连接部相对向延伸。
较佳地，所述第一侧板限位部为沿所述侧板的长度方向从所述连接部的与所述侧板咬合部相反的一侧延伸的筋板，以及所述第一底座限位部为设置于所述凹腔的朝上开口的开口槽。
根据本发明的还一方面，提供了一种折叠箱，所述折叠箱包括底座和两对相对的侧板，所述两对相对的侧板铰接于所述底座并可相对于所述底座折叠，所述底座具有板状本体和围绕所述板状本体四周的两对相对的护边，其中，
所述侧板的底部延伸出相互间隔开的多个连接部，所述连接部设有侧板咬合部；
所述底座的护边上在与所述连接部对应的位置处设有凹腔，所述凹腔内设有底座咬合部，其中所述底座咬合部布置成当所述侧板铰接于所述底座时，所述底座咬合部与所述侧板咬合部咬合，并且所述侧板咬合部设置成在所述侧板相对于所述底座折叠的过程中，能够围绕所述底座咬合部旋转；
所述侧板的底部还设有第一侧板限位部，且所述底座上在与所述第一侧板限位部相对应的位置处设有第一底座限位部，其中在所述侧板直立的状态下，所述第一侧板限位部与所述第一底座限位部配合以阻碍所述侧板外翻；以及
所述侧板的底部护边内部设有沿所述侧板的长度方向延伸的第一空腔，且所述底座的护边内部设有沿所述护边的延伸方向延伸的第二空腔。
较佳地，所述第一空腔和所述第二空腔是密闭的空腔。
根据本发明的又一方面，提供了一种折叠箱，所述折叠箱包括底座和两对相对的侧板，所述两对相对的侧板铰接于所述底座并可相对于所述底座折叠，所述底座具有板状本体和围绕所述板状本体四周的两对相对的护边，其中，
所述侧板的底部延伸出相互间隔开的多个连接部，所述连接部设有侧板咬合部，以及所述侧板咬合部的外侧设有沿所述侧板的长度方向延伸的铰链轴；
所述底座的护边上在与所述连接部对应的位置处设有凹腔，所述凹腔的中部设有底座咬合部且所述凹腔的两端设有设有铰链轴容纳部，其中所述底座咬合部布置成当所述侧板铰接于所述底座时，所述底座咬合部与所述侧板咬合部咬合，并且所述侧板咬合部设置成在所述侧板相对于所述底座折叠的过程中，能够围绕所述底座咬合部旋转，以及所述铰链轴容纳于所述铰链轴容纳部内并能够在所述铰链轴容纳部内围绕一轴线旋转；以及
所述侧板的底部还设有第一侧板限位部，且所述底座上在与所述第一侧板限位部相对应的位置处设有第一底座限位部，其中在所述侧板直立的状态下，所述第一侧板限位部与所述第一底座限位部配合以阻碍所述侧板外翻。
较佳地，所述铰链轴的外端部沿所述铰链轴的轴向延伸出一定位部，所述底座的凹腔的两端设有挂台，其中在所述侧板直立的状态下，所述定位部与所述挂台咬合。
一实施例中，两个所述侧板咬合部之间连接有限位杆，所述底座的凹腔的面向所述折叠箱内侧的侧壁上设有朝向所述折叠箱内侧的限位凸起，其中在所述侧板的折叠状态下，所述限位杆与所述限位凸起配合以阻碍所述侧板脱出所述底座。
较佳地，所述两对相对的护边中的至少一对护边的内部设有沿所述护边的长度延伸方向延伸的第一密闭空腔，和/或所述板状本体上布置有第二密闭空腔，且所述第二密闭空腔凸出所述板状本体的主表面。
本发明的折叠箱强度高且易于清洁。
附图说明
图1是根据本发明的一实施例的折叠箱的立体图，其中该折叠箱处于直立状态。
图2是图1的折叠箱的分解立体图，其中为清楚起见，仅示出一个底座和一个长侧板的两个不同视角图。
图3A-3C是分别示出图2中A、B和C三部分的放大图。
图4A是图1的折叠箱的底座的一部分的示意图，示出底座与侧板连接部分的结构。
图4B是图1的折叠箱的底座的一部分的示意图，示出从与图4A不同的视角看的底座与侧板连接部分的结构。
图5是图1的折叠箱处于一状态时的结构示意图，其中一个长侧板直立。
图6是图5的D部分的放大示意图。
图7是图5的E部分的放大示意图。
图8是折叠箱的侧板连接与底座并处于折叠状态时的局部图，其中为清楚起见，切除了部分结构。
图9是根据本发明的另一实施例的折叠箱的分解立体图，其中为清楚起见，仅示出一个底座和一个长侧板的两个不同视角图。
图10是图9的折叠箱的局部放大图。
图11是图9的折叠箱的另一局部放大图。
图12是图9的折叠箱的立体图，其中该折叠箱处于折叠状态。
图13是图12的F部分的放大图。
图14是图9的折叠箱的局部放大图，其中侧板处于直立状态。
图15是图9的折叠箱的局部剖切放大图，其中侧板处于直立状态。
图16是图9的折叠箱的另一局部剖切放大图，其中侧板处于直立状态。
图17是图9的折叠箱的一变形例的立体图，其中一个侧板处于直立状态，另一个侧板处于折叠状态。
图18是图17的折叠箱的长侧板的立体图，为清楚起见，仅示出一部分。
图19是图17的G部分的放大图。
图20是图9的折叠箱的又一变形例的立体图，其中一个侧板处于直立状态，另一个侧板处于折叠状态。
图21是图20的H部分的放大图。
图22示出折叠箱的局部立体图，其中部分剖切以示出内部结构。
图23a-23b分别示出采用不同截面的空腔的底座护边，在底座承载时，相对于x，z方向沿y轴向的形变示意图。
图23c与图23d分别示出底座护边在底座承压下陷时，在yz截面上所呈现出局部扭曲的示意图。
图24是根据本发明的一实施例的折叠箱的底座的剖视图。
图25是图24的底座的另一方向的剖视图。
图26是根据本发明的另一实施例的折叠箱的底座的立体图。
图27是图26的底座的剖视图。
图28是根据本发明的又一实施例的折叠箱的底座的立体图。
图29是图28的底座的剖视图。
图30是根据本发明的再一实施例的折叠箱的底座的立体图。
图31是图30的底座的剖视图。
图32示出两个折叠箱相互堆叠的结构示意图，为清楚起见，位于上方的折叠箱去除了侧板。
图33是图32的相互堆叠的折叠箱的局部剖视正视图。
图34是图33的折叠箱的I部分的放大图。
图35是图32的相互堆叠的折叠箱的局部剖视侧视图。
图36是图35的折叠箱的J部分的放大图。
具体实施方式
以下将结合附图对本发明的较佳实施例进行详细说明，以便更清楚理解本发明的目的、特点和优点。应理解的是，附图所示的实施例并不是对本发明范围的限制，而只是为了说明本发明技术方案的实质精神。
图1示出本发明的折叠箱。如图1所示，折叠箱1包括底座2、一对相对的长侧板3和4以及一对相对的短侧板5和6。各侧板铰接于底座1并可相对于底座1折叠。折叠时，通常是短侧板先折叠，然后再折叠长侧板，长侧板置于短 侧板之上。各侧板的左右两侧设有咬合部，在侧板直立的状态下，相邻侧板的左右两侧的咬合部相互咬合。在短侧板5和6上还分别设有锁定机构7和8，锁定机构7和8用于将相邻的长侧板和短侧板相互锁定。这里，侧板左右两侧的咬合部的结构以及锁定机构7和8的结构可以采用本领域已知的或待开发的任何合适的结构，在此不再详述。
图2至图4B示出根据本发明的一实施例的侧板与底座的连接部分的结构。图2至图4B仅示出长侧板3和4上的连接结构，短侧板5和6上的连接结构与长侧板上的连接结构基本相同，在此不再详述。如图2-3C所示，长侧板3具有本体31。长侧板的底部延伸出相互间隔开的多个连接部32。每个连接部32上设有侧板咬合部33。具体地，每个连接部32设有从长侧板底部一体延伸出的相互间隔开的两个凸条37。两个凸条37底端的内侧分别沿长侧板3的长度方向沿相对的方向延伸出侧板咬合部33。两个侧板咬合部33之间通过连接杆38相互连接，连接杆38主要用作防止侧板在折叠状态下脱离底座的限位作用，因此也可称为限位杆，下文将进一步详细描述。连接杆38的中部还形成有导向部33，用于在将长侧板安装至底座时，对长侧板进行导向。两个凸条37的外侧分别沿长侧板3的长度方向沿相反的方向分别延伸出铰链轴34。铰链轴的外端部沿铰链轴的轴向延伸出一定位部35，其中在侧板直立的状态下，定位部与底座上的挂台咬合，下文将进一步描述。这里，定位部35可以通过将铰链轴34的端部切除一部分而形成，即定位部35由铰链轴的端部形成。
底座2包括本体21。本体21的四周设有一对相对的护边22和23以及另一对相对的护边24和25。一对相对的长侧板3和4分别安装在护边22和23上，而一对相对的短侧板分别安装在护边24和25上。各护边上设有用于与侧板的底部(即下侧)上的相应结构配合的结构。这里，以在护边22上的与长侧板3下侧的相应结构配合的底座结构为例进行说明。护边24和25上的相应结构，即与短侧板下侧的相应结构配合的结构，以及护边23上的相应结构，均与护边22上的相应结构基本相同，在此不再详述。
如图3C-4B所更详细示出的，底座2的护边22上在连接部32对应的位置处设有凹腔221。凹腔221的开口朝向22护边的顶部和内侧。凹腔221内从凹腔底面一体延伸出底座咬合部222，其中当侧板3铰接于底座2时，底座咬合部222与侧板咬合部33咬合。底座咬合部222位于或靠近底座的护边22的内侧。 底座咬合部222包括从凹腔221的底面一体延伸出的相互间隔开的两个立柱225。两个立柱的顶部一体形成有连接杆224。连接杆224的两侧用作咬合结构，即底座咬合部222为大致T形。底座咬合部222的两个立柱225及连接杆224之间围成一个导向孔229。在侧板3组装至底座2时，侧板上的导向部33穿过导向孔229，以辅助侧板的安装。
凹腔221的面向折叠箱内侧的侧壁的顶部上形成有朝向内凸出的凸起223。侧板3安装至底座时，侧板3上的连接杆38位于凸起223下方，并被凸起223阻挡而不会从底座2脱开。凹腔221的两侧形成有铰链轴容纳部226和限位挂台227。侧板3组装至底座时，侧板3上的铰链轴34容纳于铰链轴容纳部226内并能够在其中旋转。在侧板直立的状态下，侧板3的铰链轴34的末端上的定位部35与挂台227咬合，从而增强侧板与底座之间的连接强度，如图6所示。
图7示出底座2的一部分的放大图，其中底座的一部分切除以示出底座的内部结构。如图7所示，底座2的护边22内部设有空腔228。空腔228位于凹腔221的下方。空腔228沿护边22的长度方向延伸。空腔228的长度略小于护边22的长度，例如比护边的长度小约两个壁厚。优选地，空腔228为封闭空腔。优选地，空腔228通过气辅注塑成型。
图5-6示出长侧板3连接于底座2并处于直立状态。如图5和6所示，长侧板3连接于底座2并处于直立状态时，长侧板3底部的咬合部33与底座上的咬合结构224相互咬合。长侧板3底部的铰链轴位于34置于底座2的铰链轴容纳部226内，铰链轴的端部所形成的定位部35与底座的挂台227咬合，且长侧板3上的导向部33穿过底座2的导向孔229。
图8示出长侧板3连接于底座2并处于折叠状态。如图8所示，当侧板3处于折叠状态时，侧板上的连接杆38，其用作限位特征，位于底座的凸起223下方，从而防止侧板3向上脱离底座。另外，连接杆38还位于底座咬合部222与底座的凹腔的面向折叠箱内部的侧壁之间，由此在折叠箱处于折叠状态时，限制侧板向内或向外脱离底座。
图9-12示出根据本发明的另一实施例的折叠箱10的结构图。该折叠箱的基本组成部分与上述实施例相同，主要不同之处在于侧板与底座的连接部分的结构，其余相同，在此不再详述。如图9-12所示，侧板30的下侧设有咬合部301，也称为侧板咬合部301。底座20上设有相应的底座咬合部205，在侧板30相对 于底座20折叠的过程中，侧板咬合部301能够围绕底座咬合部旋转。
具体地，如图10和11所示，侧板30的下侧一体延伸出连接部302。连接部302的端部在一侧沿侧板的长度方向延伸出咬合部301。相邻的两个连接部302的端部的一侧延伸出的咬合部沿相对的方向延伸，并且相邻的两个咬合部组成一组咬合结构。连接部302的与咬合部相反的另一侧延伸出限位部303，也称为侧板限位部。限位部303可以是从侧板底部向下延伸的筋板或凸起等。
如图9所示，底座20包括本体206。本体206的四周设有一对相对的护边201和203以及另一对相对的护边202和204。一对相对的长侧板分别安装在护边201和203上，而一对相对的短侧板分别安装在护边202和204上。各护边上设有用于与侧板的底部(即下侧)上的相应结构配合的结构。这里，以在护边201上的与长侧板下侧的相应结构配合的底座结构为例进行说明。护边202和204上的相应结构，即与短侧板下侧的相应结构配合的结构，以及护边203上的相应结构，均与护边201上的相应结构基本相同，在此不再详述。
如图10和11所更详细示出的，底座20的护边201上在连接部302对应的位置处设有凹腔207。凹腔207的开口朝向护边201的顶部和内侧。凹腔221内从凹腔底面一体延伸出底座咬合部208，其中当侧板铰接于底座时，底座咬合部208与侧板咬合部301咬合。底座咬合部208位于或靠近底座的护边201的内侧。底座咬合部208包括从凹腔207的底面一体延伸出的相互间隔开的两个立柱209。两个立柱的顶部一体形成有连接杆210。连接杆210的两侧用作咬合结构。底座咬合部208的两个立柱209及连接杆210共同形成T形结构，即底座咬合部208为大致T形。
连接杆210的背向折叠箱内部的一侧形成有凸起211，即凸起211位于底座咬合部208与凹腔207的面向折叠箱内侧的侧壁之间。
侧板30安装至底座并处于折叠状态时，侧板30上的咬合部301位于凸起211下方，并被凸起211阻挡而阻碍侧板30向上从底座20脱开。
凹腔207的两侧还形成有限位槽212。限位槽212为开口朝上的开口槽。在侧板直立的状态下，侧板30的限位部303插入限位槽212内，从而阻碍侧板进一步外翻。限位槽212的靠近折叠箱内部的一侧还设有切口213。切口213为限位303插入限位槽或脱离限位槽提供避让空间。
图12和13示出长侧板30连接于底座20并处于折叠状态。如图12和13 所示，当侧板30处于折叠状态时，侧板上的咬合部301的一个侧面301a与底座上的凸起211配合，并位于底座的凸起211下方，从而防止侧板3向上脱离底座。
图14-16示出长侧板30连接于底座20并处于直立状态的局部视图。如图14-16所示，长侧板30连接于底座2并处于直立状态时，长侧板30底部的咬合部301与底座上的咬合部208相互咬合。长侧板30底部的限位部303插入于底座20的限位槽212内，由此防止侧板30进一步外翻。
如图15-16所示，底座20的护边201内部设有空腔214。空腔214位于凹腔207的下方。空腔214沿护边201的长度方向延伸。空腔214的长度略小于护边201的长度，例如比护边的长度小约两个壁厚。优选地，空腔214为封闭空腔。优选地，空腔214通过气辅注塑成型。
还如图15-16所示，优选地，在侧板的底部护边内部也设有空腔39。空腔39类似于空腔214。空腔39沿侧板的长度方向延伸且为封闭空腔。优选地，空腔39通过气辅注塑成型。
图17-19示出图9所示的折叠箱的一变形例的结构图。该变形例与图9所示的折叠箱的不同之处在于，本实施例的折叠箱101的侧板40底部的咬合部401与图9所示的咬合部301不同，其余相同，在此不再详述。如图18所示，侧板40的咬合部401还包括从咬合部本体延伸出的限位部401a。限位部401a布置成使得在侧板折叠的状态下，限位部401a与侧板咬合部配合，以阻碍侧板咬合部401沿朝向折叠箱内部的方向脱离底座。应理解的是，也可以将咬合部401的尺寸做得更大来实现与上述的限位部401a相同的功能。
图20-21示出图9所示的折叠箱的另一变形例的结构图。该变形例与图9所示的折叠箱的不同之处在于，本实施例的折叠箱102的侧板50底部的连接部502与图9所示的连接部302不同，且底座60上设有与连接部匹配的结构，其余相同，在此不再详述。如图20-21所示，侧板50的连接部502还包括从连接部的一侧延伸出的限位凸起502a。底座60的结构与图9所示的底座结构基本相同，不同点仅在于在凹腔内在与限位凸起502a相对应的位置处设有凹槽601，其余相同，在此不再详述。在侧板折叠的状态下，限位凸起502a与底座凹槽601配合，以阻碍侧板沿朝向折叠箱内部的方向脱离底座。
应理解的是，还可以通过其他方式或结构来阻碍侧板沿朝向折叠箱内部的 方向脱离底座。
图22示出折叠箱的局部立体图，其中部分剖切以示出内部结构。如图22所示，侧板与底座对应有x，y和z三个方向上的延伸。铰链沿长侧板的x方向设置。侧板加强部，即空腔在沿着铰链设置方向的垂直方向y轴上具有一定厚度。底座加强部(即空腔)沿着x方向设置。底座沿x，z轴方向布置具有辐射面积的货物承载面。侧板与底座的铰接处具有对应的支点，底座支点A，B对应的侧板支点A，B在Z轴向上偏移，形成杠杆，以对抗由于底座承载时下陷侧板与底座铰接处向内偏移，尤其形成底座强化的第一部分。
侧板下缘设置加强部与底座加强部共同形成底座强化的第二部分。尤其是处于铰接部位的侧板加强部与底座加强部，增加了铰接部位在x，y，z轴方向上的抗形变能力(底座受力承载时，底座护边y轴负方向以及底座受承载区域下陷时底座护边被迫向z轴向的偏移)。
此外，相比其他类型的空腔，封闭性的空腔结构使得侧板和底座的抗变形能力大大提高。图23a-23b分别示出采用不同截面的空腔的底座护边，在底座承载时，相对于x，z方向沿y轴向的形变示意图。图23a为倒U型开放型型腔图，图23b为封闭型型腔。在底座护边两端相对固定并在中部施加一定压力情况下，两种不同型腔截面的护边结构具有不同的抗弯能力。在相同压力下，开放型型腔的变形量达到50，而封闭型型腔的变形量只有46。明显地，封闭型型腔护边具有更好的抗形变能力。
图23c与图23d分别示出底座护边在底座承压下陷时，在yz截面上所呈现出局部扭曲的示意图。当底座下陷时，封闭型型腔相比于开放型型腔，底座护边截面与y轴的夹角呈减小趋势，即a1>a2。由此可见，封闭的底座护边型腔更具有对抗扭曲形变能力即底座护边扭曲。
综合以上，封闭型底座护边型腔有效改善底座形变，从而提升底座的承载能力。
图24-25示出根据本发明的一实施例的折叠箱的底座1a的结构图。如图24-25所示，底座1a具有板状本体1a1和护边1a2。板状本体1a1上分布有通孔1a11。板状本体1a1的四周上布置有密闭空腔1a3。密闭空腔1a3凸出板状本体的主表面1a4并平行于护边延伸。主表面1a4背向底座的护边。通过在板状本体的四周布置密闭空腔，底座的强度可大大提高。
一变形例中，密闭空腔1a3可仅仅布置在板状本体的两对相对的侧边中的一对侧边上。此种情况也可以显著提高底座的强度。
较佳地，密闭空腔1a3通过气辅成型工艺形成。
图26-27示出根据本发明的另一实施例的折叠箱的底座1b的结构图。图26-27所示，该实施例与图24-25实施例的主要不同之处在于：底座1b的护边1b2及板状主体1b1上均布置有封闭空腔。其余基本相同，在此不再详述。
底座1b的护边1b2上布置有第一封闭空腔1b3。第一封闭空腔1b3布置于两对相对的护边中的至少一对护边的内部并沿护边的长度延伸方向。
板状本体1b1上布置有第二封闭空腔1b4。优选地，布置于板状主体上的第二封闭空腔1b4相对于布置于护边上的第一封闭空腔1b3更靠近板状主体的内侧。
图28-29是根据本发明的又一实施例的折叠箱的底座1c的结构图。如图28-29所示，该实施例与图26-27实施例的主要不同之处在于：护边1c2上布置的空腔1c3为开口型空腔，而板状主体1c1上的空腔1c4为封闭型空腔。其余相同，在此不再详述。
图30-31是根据本发明的再一实施例的折叠箱的底座1d的结构图。如图30-31所示，该实施例与图24-25实施例的主要不同之处在于：底座1d的板状主体1d1上布置的空腔为交叉型空腔，即底座1d的板状主体1d1上布置有两条相互交叉的密闭空腔1d3和1d4。这两条密闭空腔的交叉点位于底座的中心。每条密闭空腔的两端延伸至底座的边缘。两条密闭的空腔相互连通。其余相同，在此不再详述。
应理解的是，上述各实施例中的布置于底座的板状主体和底座的护边上的空腔形式和布置位置可以相互组合。
图32-36示出相互堆叠的两个折叠箱的结构示意图，其中这两个折叠箱的底座采用如图26所示的底座1b。如图32-36所示，折叠箱的侧板70的顶部设有侧板限位部701。侧板限位部701为突出于侧板顶表面的凸起。底座1b的底部设有底座限位部1b5。底座限位部1b5为设置于底座外围的凹槽。侧板限位部701和底座限位部1b布置成在两个折叠箱堆叠时，位于上方的折叠箱的底座限位部1b与位于下方的折叠箱的侧板限位部701配合，从而使得位于上方的折叠箱的底座与位于下方的折叠箱的侧板之间的相对位置固定。进一步地，底座1b 上的凸出底表面的密闭空腔1b4也用作限位部。从而，两个折叠箱相互堆叠时，位于上方的折叠箱的密闭空腔在位于下方的折叠箱的侧板的内侧。由此，位于下方的折叠箱的侧板被限定在上方折叠箱的底座限位部与凸出的密闭空腔之间。这种位置限定，既可以达到折叠箱侧板受货物挤压时，侧板相对的形变，同时，也在底座相对的两组护边上形成相对的固定支撑点，使其底座在其护边除空腔加强之外，再以固定支撑的方式形成底座护边的支撑框架，对抗其底座受货物承载时，底座的向下的形变，达到侧板与底座的双重加强效果。
应理解的是，上述各实施例中，侧板与底座之间的铰接方式可以是在侧板的底部设置侧板铰接部，在底座的护边上设置相对应的底座铰接部，从而侧板铰接部铰接于底座铰接部而将侧板铰接于底座。上述的侧板铰接部和上述的连接部上的侧板咬合部可以是相同部分，也可以是不同部分。类似地，上述的底座铰接部和上述的底座咬合部可以是相同部分，也可以是不同部分。在侧板相对于底座折叠的过程中，侧板咬合部能够围绕底座咬合部旋转的情形下，侧板铰接部和侧板咬合部为相同部分，且上述的底座铰接部和上述的底座咬合部为相同部分。
本发明的折叠箱的侧板与底座之间的连接结构简单，咬合强度高，使得底座护边尺寸可以相对较小，而且操作方便、易于清洁。此外，底座上设有密闭空腔，使得底座在各个受力方向上有着更优的抗扭曲及形变能力。当底座承载货物较重时，能更好的对抗底座受压后向下内凹陷，从而解决箱体底座受压后内凹陷货物间挤压受损的问题，提高折叠箱承载货物后运输的安全可靠性。在跌落以及碰撞情况下，更能均匀的分散应力，从而提高折叠箱的使用寿命。
以上已详细描述了本发明的较佳实施例，但应理解到，在阅读了本发明的上述讲授内容之后，本领域技术人员可以对本发明作各种改动或修改。这些等价形式同样落于本申请所附权利要求书所限定的范围。

Claims (22)

  1. 一种折叠箱，所述折叠箱包括底座和两对相对的侧板，所述底座具有板状本体和围绕所述板状本体四周的两对相对的护边，所述两对相对的侧板铰接于所述底座的护边并可相对于所述底座折叠，其特征在于，
    所述侧板的底部设有侧板铰接部，所述底座的护边上设有相对应的底座铰接部，其中所述侧板铰接部铰接于所述底座铰接部而将所述侧板铰接于所述底座；以及
    所述两对相对的护边中的至少一对护边的内部设有沿所述护边的长度延伸方向延伸的第一密闭空腔。
  2. 根据权利要求1所述的折叠箱，其特征在于，所述侧板的底部延伸出相互间隔开的多个连接部，所述连接部设有侧板咬合部；以及所述底座的护边上设有底座咬合部，其中所述底座咬合部布置成当所述侧板铰接于所述底座时，所述底座咬合部与所述侧板咬合部咬合。
  3. 根据权利要求2所述的折叠箱，其特征在于，所述底座的护边上在与所述连接部对应的位置处设有凹腔，所述底座咬合部设置于所述凹腔内，以及所述侧板咬合部设置成在所述侧板相对于所述底座折叠的过程中，能够围绕所述底座咬合部旋转。
  4. 根据权利要求1所述的折叠箱，其特征在于，所述侧板的底部还设有第一侧板限位部，且所述底座上在与所述第一侧板限位部相对应的位置处设有第一底座限位部，其中在所述侧板直立的状态下，所述第一侧板限位部与所述第一底座限位部配合以阻碍所述侧板外翻。
  5. 根据权利要求1所述的折叠箱，其特征在于，所述板状本体上布置有第二密闭空腔，且所述第二密闭空腔凸出所述板状本体的主表面。
  6. 根据权利要求5所述的折叠箱，其特征在于，所述第二密闭空腔设置于所述板状主体的背向所述护边的主表面上。
  7. 根据权利要求5所述的折叠箱，其特征在于，所述板状主体上布置有平行于一条所述护边延伸的至少两个所述第二密闭空腔。
  8. 根据权利要求5所述的折叠箱，其特征在于，所述底座的四周布置有两对相对的所述第二密闭空腔。
  9. 根据权利要求5所述的折叠箱，其特征在于，所述底座上布置有两条相互交叉的所述第二密闭空腔，且两条所述第二密闭空腔的交叉点位于所述底座的中心。
  10. 根据权利要求1所述的折叠箱，其特征在于，所述侧板的底部内部设有沿所述侧板的长度方向延伸的第三密闭空腔。
  11. 一种折叠箱，所述折叠箱包括底座和两对相对的侧板，所述底座具有板状本体和围绕所述板状本体四周的两对相对的护边，所述两对相对的侧板铰接于所述底座的护边并可相对于所述底座折叠，其特征在于，所述侧板的底部设有侧板铰接部，所述底座的护边上设有相对应的底座铰接部，其中所述侧板铰接部铰接于所述底座铰接部而将所述侧板铰接于所述底座；以及所述板状本体上布置有密闭空腔，且所述密闭空腔凸出所述板状本体的主表面。
  12. 根据权利要求11所述的折叠箱，其特征在于，所述密闭空腔设置于所述板状主体的背向所述护边的主表面上。
  13. 根据权利要求11所述的折叠箱，其特征在于，所述板状主体上布置有平行于一条所述护边延伸的至少两个所述第二密闭空腔。
  14. 根据权利要求11所述的折叠箱，其特征在于，所述板状本体的四周布置有两对相对的所述密闭空腔。
  15. 根据权利要求11所述的折叠箱，其特征在于，所述底座上布置有两条相互交叉的所述密闭空腔，且两条所述密闭空腔的交叉点位于所述底座的中心。
  16. 根据权利要求11所述的折叠箱，其特征在于，所述板状本体上分布有多个通孔。
  17. 一种折叠箱，所述折叠箱包括底座和两对相对的侧板，所述两对相对的侧板铰接于所述底座并可相对于所述底座折叠，所述底座具有板状本体和围绕所述板状本体四周的两对相对的护边，其特征在于，
    所述侧板的底部延伸出相互间隔开的多个连接部，相邻的两个所述连接部中每个所述连接部各设有至少一个侧板咬合部；
    所述底座的护边上在与所述连接部对应的位置处设有凹腔，每个所述凹腔内设有至少两个所述底座咬合部，其中所述底座咬合部布置成当所述侧板铰接于所述底座时，所述底座咬合部与对应的所述侧板咬合部咬合，并且所述侧板咬合部设置成在所述侧板相对于所述底座折叠的过程中，能够围绕所述底座咬 合部旋转；以及
    所述侧板的底部还设有第一侧板限位部，且所述底座上在与所述第一侧板限位部相对应的位置处设有第一底座限位部，其中在所述侧板直立的状态下，所述第一侧板限位部与所述第一底座限位部配合以阻碍所述侧板外翻。
  18. 根据权利要求17所述的折叠箱，其特征在于，每个所述连接部上从一侧延伸出一个所述侧板咬合部，每个所述凹腔内设有两个底座咬合部，且所述两个底座咬合部共同形成T形结构。
  19. 根据权利要求17所述的折叠箱，其特征在于，所述两对相对的护边中的至少一对护边的内部设有沿所述护边的长度延伸方向延伸的第一密闭空腔，和/或所述板状本体上布置有第二密闭空腔，且所述第二密闭空腔凸出所述板状本体的主表面。
  20. 一种折叠箱，所述折叠箱包括底座和两对相对的侧板，所述两对相对的侧板铰接于所述底座并可相对于所述底座折叠，所述底座具有板状本体和围绕所述板状本体四周的两对相对的护边，其特征在于，
    所述侧板的底部延伸出相互间隔开的多个连接部，所述连接部设有侧板咬合部，以及所述侧板咬合部的外侧设有沿所述侧板的长度方向延伸的铰链轴；
    所述底座的护边上在与所述连接部对应的位置处设有凹腔，所述凹腔的中部设有底座咬合部且所述凹腔的两端设有设有铰链轴容纳部，其中所述底座咬合部布置成当所述侧板铰接于所述底座时，所述底座咬合部与所述侧板咬合部咬合，并且所述侧板咬合部设置成在所述侧板相对于所述底座折叠的过程中，能够围绕所述底座咬合部旋转，以及所述铰链轴容纳于所述铰链轴容纳部内并能够在所述铰链轴容纳部内围绕一轴线旋转；以及
    所述侧板的底部还设有第一侧板限位部，且所述底座上在与所述第一侧板限位部相对应的位置处设有第一底座限位部，其中在所述侧板直立的状态下，所述第一侧板限位部与所述第一底座限位部配合以阻碍所述侧板外翻。
  21. 根据权利要求20所述的折叠箱，其特征在于，所述两对相对的护边中的至少一对护边的内部设有沿所述护边的长度延伸方向延伸的第一密闭空腔，和/或所述板状本体上布置有第二密闭空腔，且所述第二密闭空腔凸出所述板状本体的主表面。
  22. 根据权利要求20所述的折叠箱，其特征在于，两个所述侧板咬合部之间 连接有限位杆，所述底座的凹腔的面向所述折叠箱内侧的侧壁上设有朝向所述折叠箱内侧的限位凸起，其中在所述侧板的折叠状态下，所述限位杆与所述限位凸起配合以阻碍所述侧板脱出所述底座。
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AU2018252625A1 (en) 2019-11-21
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US11548682B2 (en) 2023-01-10
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US20200039683A1 (en) 2020-02-06
EP3611107A1 (en) 2020-02-19

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