US20160236818A1 - Foldable crate and locking mechanisms therefor - Google Patents
Foldable crate and locking mechanisms therefor Download PDFInfo
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- US20160236818A1 US20160236818A1 US14/621,196 US201514621196A US2016236818A1 US 20160236818 A1 US20160236818 A1 US 20160236818A1 US 201514621196 A US201514621196 A US 201514621196A US 2016236818 A1 US2016236818 A1 US 2016236818A1
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- flanking
- crate
- rotary locking
- sidewall
- longitudinal
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- 230000007246 mechanism Effects 0.000 title claims description 26
- 238000000926 separation method Methods 0.000 claims description 9
- 238000009877 rendering Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 5
- 230000000977 initiatory effect Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 description 8
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003028 elevating effect Effects 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
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Classifications
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- 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
- B65D21/08—Containers of variable capacity
- B65D21/086—Collapsible or telescopic containers
-
- 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
- B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
- B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
- B65D7/24—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls collapsible, e.g. with all parts detachable
- B65D7/26—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls collapsible, e.g. with all parts detachable with all parts hinged together
-
- 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
- B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
- B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
- B65D7/24—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls collapsible, e.g. with all parts detachable
- B65D7/30—Fastening devices for holding collapsible containers in erected state, e.g. integral with container walls
-
- 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
Definitions
- the present invention pertains to containers, in particular foldable crates and locking mechanism therefor.
- the invention relates to advances in and elaborations of locking mechanisms for foldable crates.
- Foldable crates are widely used these days.
- the general concept of such locking mechanisms is that a foldable crate can be secured in open conformation, by a locking mechanism, which is releasable by an actuator, typically a tab surrounding the handle of the crate.
- a locking mechanism which is releasable by an actuator, typically a tab surrounding the handle of the crate.
- the pertinent state-of-the-art is represented by: U.S. Pat. No. 7,861,878, U.S. Pat. No. 6,290,081, US20100230406, US20120091133 and US20100320202; EP2431283 and EP1655232, as well as by WO2010146190, WO2009100799 and particularly DE10137328.
- US20120091133 discloses a collapsible box including a plastic structure with a rectangular base, two ends, and two sides which are pivotably coupled to the base.
- the ends include centered parts combined with latches, which in one position anchor the sides and ends, while in another position the connection between the ends and the sides is released in order to collapse the elements.
- the collapsible box of US20120091133 is characterized in that the box includes an anchor device consisting of a series of rotary bodies that connect the latches to the centered part via two pairs of resilient parts and which, in the inoperative position thereof, hold the latches outwards, attaching the ends and the sides. When the central part is moved upward, the latches thus release the ends and the sides.
- U.S. Pat. No. 7,861,878 discloses a fastening device for folding boxes.
- the folding boxes include a bottom and four lateral walls coupled in jointed fashion to the edges of that bottom, two opposite walls each having a fastening device for ensuring the unfolding of the box.
- the fastening devices of U.S. Pat. No. 7,861,878 include a vertically displaceable central piece and lateral bolts with horizontal displacement for fastening the lateral walls via their adjacent edges.
- the fastening device of U.S. Pat. No. 7,861,878 includes elastic spring elements that link the central control piece with pairs of the lateral bolts. The spring elements, in the rest position, maintain the bolts in an engagement and fastening position. The release position of the bolts in U.S. Pat. No. 7,861,878 results when the spring elements pull the bolts against the resistance of the elastic elements.
- DE10137328 that is considered the most relevant prior art publication discloses an assembly, adapted to open and close side walls of a plastic and reusable box or container, which have a manual locking unit, with at least one projection, which grips over a ratchet hook on the longitudinal wall.
- the lock operating control is adapted to grip, carry the box or container and also unlock the side walls.
- the invention relates to advances in and elaborations of locking mechanisms for foldable crates.
- a foldable crate including 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 and unlocking mechanism.
- the locking mechanism includes a pair of rotary locking elements, pivoting upon axes on flanking sidewalls, as well as a pair of respective protrusions inwardly facing from longitudinal sidewalls.
- the unlocking mechanism includes a manual deactivator, configured to exert a rotational torque upon rotary locking elements.
- FIG. 1 an isometric view of an assembled foldable crate in an open conformation and locking/unlocking mechanism therefor, in accordance with an embodiment of the present invention
- FIG. 2 is an exploded isometric view of a base platform, a longitudinal sidewall and a flanking sidewall of an embodiment of the foldable crate as well as of a pair of rotary locking elements of the locking mechanism thereof and manual deactivator of the unlocking mechanism thereof;
- FIG. 3A is a posterior perspective elevated view of the locking mechanism of the foldable crate
- FIG. 3B is an enlarged posterior perspective elevated view of the locking mechanism of the foldable crate shown in FIG. 3A ;
- FIG. 4A is an elevated frontal cut-away view of the flaking sidewall, showing a terminal portion of a rotary locking element of the locking mechanism of the foldable crate;
- FIG. 4B is an enlarged elevated frontal cut-away view of the flaking sidewall, showing a terminal portion of a rotary locking element, shown in FIG. 5A ;
- FIG. 5A is an elevated perspective frontal cut-away view of the flaking sidewall, showing an inwardly facing protrusion on the longitudinal sidewall;
- FIG. 5B is an enlarged elevated perspective frontal cut-away view of the flaking sidewall, showing the inwardly facing protrusion on the longitudinal sidewall, shown in FIG. 5A ;
- FIG. 6A is a perspective frontal view of the flaking sidewall, incorporating another embodiment of locking/unlocking mechanism, with a safety catch feature preventing inadvertent opening of the crate;
- FIG. 6B is an enlarged frontal view of the flaking sidewall, incorporating another embodiment of locking/unlocking mechanism, with a safety catch feature preventing inadvertent opening of the crate, shown in FIG. 6A .
- FIGS. 1 and 2 show components of an embedment of foldable crate 30 as well as locking elements 80 thereof.
- Foldable crate 30 comprises base platform 32 .
- Base platform 32 has a plurality of structural recesses 34 , disposed about longitudinal portion 36 of base platform 32 and structural recesses 38 disposed about flanking portion 40 thereof.
- the superior face of longitudinal portions 36 of base platform 32 are positioned somewhat higher than the superior face of flanking portion 40 .
- Foldable crate 30 further comprises a pair of longitudinal sidewalls 50 and a pair of flanking sidewalls 60 , of which just a single sidewall from each pair is shown.
- Longitudinal sidewalls 50 include a plurality of structural elements 52 , disposed about bottom portion 54 of the former, whereas flanking sidewalls 60 include a plurality of structural elements 62 , disposed about bottom portion 64 of sidewalls 60 .
- Structural elements 52 disposed about bottom portion 54 of longitudinal sidewalls 50 further comprise longitudinal pivots 42 configured to form a hinged connection with structural recesses 34 , disposed about longitudinal portion 36 of base platform 32 ; whereas structural elements 62 , disposed about bottom portion 64 of flanking sidewalls 60 further comprise flanking 44 pivots, configured to form a hinged connection with structural recesses 38 disposed about flanking portion 40 of base platform 32 of foldable crate 30 .
- at least one of pivots 42 or 44 is a single extended rod, typically metallic, threaded respectively throughout the entire length of longitudinal portion 36 or flanking portion 40 of base platform 32 .
- Structural recesses 34 disposed about longitudinal portions 36 of base platform 32 as well as with structural recesses 38 disposed about flanking portions 40 of base platform 32 typically include apertures (not shown) adapted configured to receive longitudinal pivots 42 and/or flanking 44 pivots, respectively, thereby forming a hinged connection between longitudinal sidewalls 50 and longitudinal portion 36 as well as flanking sidewalls 60 flanking portions 40 of base platform 32 .
- Longitudinal portions 36 of base platform 32 embodying structural recesses 34 are positioned somewhat higher than flanking structural recesses 38 disposed about flanking portion 40 of base platform 32 embodying structural recesses 38 , whereas longitudinal pivots 42 are positioned somewhat higher than flanking pivots 44 ; thereby providing for folding flanking sidewalls 60 inwardly towards bottom and then folding longitudinal sidewalls 50 on top of flanking sidewalls 60 in a folded conformation (not shown) foldable crate 30 .
- Longitudinal sidewalls 50 include tabs 56 , adapted to serve as gripping handles.
- Longitudinal sidewalls 50 include flanking facets 58 extending essentially perpendicularly along a portion of the vertical edges of longitudinal sidewalls 50 . It is further noted that flanking facets 58 of longitudinal sidewalls 50 preferably form enclosed channels 59 within longitudinal sidewalls 50 .
- Flanking sidewalls 60 include tab 66 , adapted to serve as a gripping handle. It is noted that flanking sidewalls 60 include side recesses 68 , forming an opening sidewalls 60 allowing passage of protrusion 78 of longitudinal sidewalls 50 upon opening and folding crate 30 . Flanking sidewalls 60 include flanking struts 72 , forming a channel which is in continuum with enclosed channels 59 formed by flanking facets 58 within longitudinal sidewalls 50 .
- Flanking sidewalls 60 comprise structured centric recess 70 , essentially surrounding tab 66 .
- Structured centric recess 70 of flanking sidewall 60 , is adapted to accommodate unlocking element 82 .
- Structured centric recess 70 in flanking sidewalls 60 comprises a couple of grooves 76 along a portion of the sides thereof, adapted to accommodate ridges or extensions (not shown) of unlocking element 82 and sustain vertical displacement of the latter within the former.
- Rotary locking elements 80 are pivoted on pivots 84 positioned typically somewhat offset structured centric recess 70 , in flanking sidewall 60 .
- Rotary locking elements 80 further comprise or embody leaf-springs 88 , extending from the top face upwards and towards the terminal portion 86 of rotary locking elements 80 .
- Locking elements 80 are threaded into channels 59 in flanking sidewalls 60 , underneath flanking struts 72 . It is noted that the channels formed underneath flanking struts 72 are somewhat wider than locking elements 80 ; thereby sustaining radial displacement of the latter within the former. Locking elements 80 are furnished with pivots, which are threaded into apertures 84 , at the top portion of flanking sidewalls 60 . Locking elements 80 are rotatable upon pivots threaded into apertures 84 , in flanking sidewalls 60 ; thereby sustaining radial displacement of the terminal portion of locking elements 80 within channels formed underneath flanking struts 72 in flanking sidewalls 60 .
- Longitudinal sidewalls 50 comprise structured protrusions 78 , extending inwardly from the inner faces of longitudinal sidewalls 50 .
- U-shaped cut 69 is formed essentially surrounding protrusions 78 , thereby rendering protrusions 78 outwardly displaceable, upon pushing onto protrusions 78 in an outward direction, against the biasing force exerted upon deformation of the material at the basis of U-shaped cut 69 .
- Structured protrusions 78 of longitudinal sidewalls 50 comprise upwardly oriented back upper face 71 and essentially vertically oriented back upper face 73 , slightly upwardly inclined backwards.
- flanking sidewalls 60 comprise recesses 68 defining an opening towards the interior of crate 30 .
- Recesses 68 in flanking sidewalls 60 allow structured protrusions 78 of longitudinal sidewalls 50 to surpass the terminal portions of locking elements 80 , while unfolding crate 30 into open conformation, shown in FIG. 1 .
- Terminal portions of locking elements 80 preferably comprise chamfered or beveled terminal front face 86 .
- Chamfered or beveled terminal front face 86 of locking elements 80 is to some extent inwardly slanted, facing somewhat towards the corner of crate 30 .
- structured protrusions 78 Upon collision of structured protrusions 78 with terminal portions of locking elements 80 and particularly with chamfered or beveled terminal front face 86 thereof, structured protrusions 78 are displaced in an outward direction, while the material at the basis of U-shaped cut 69 is somewhat bent or deformed, forming a biasing force urging structured protrusions 78 in an inward direction.
- terminal portions of locking elements 80 upon collision of terminal portions of locking elements 80 with structured protrusions 78 , terminal portions of locking elements 80 are displaced in an upward direction, while being contiguously translated upon the surface of upwardly oriented back upper face 71 of structured protrusions 78 on longitudinal sidewalls 50 .
- terminal portions of locking elements 80 are spontaneously displaced in a downward direction, due to the biasing force exerted by leaf-springs 88 of locking elements 80 , bouncing against inner top face of the top portion of flanking sidewalls 60 .
- terminal portions of locking elements 80 are become locked in front of structured protrusions 78 of longitudinal sidewalls 50 , whereby flanking sidewalls 60 are become locked in a perpendicular orientation relatively to base platform 32 , rendering crate 30 locked in open conformation, shown in FIG. 1 .
- Unlocking element 82 is slidable in structured centric recess 70 , of flanking sidewalls 60 . Ridges or extensions (not shown) of unlocking element 82 are threaded into grooves 76 of about structured centric recess 70 and slidable therein. Vertical translation of unlocking element 82 upwards is restricted by the length of grooves 76 .
- Leaf-springs 88 spontaneously drive unlocking element 82 in a downward direction, by bouncing against inner top face of the top portion of flanking sidewalls 60 .
- terminal portions of unlocking element 82 exert rotational torque onto locking elements 80 , causing locking elements 80 to rotate upon pivots threaded into apertures 84 , in flanking sidewalls 60 , so that the terminal portions of locking elements 80 are radially displaced in an upward direction and assume a higher position within channels formed underneath flanking struts 72 in flanking sidewalls 60 ; thereby rendering crate 30 readily foldable into folded conformation (not shown).
- Enclosed channels 59 formed by flanking facets 58 within longitudinal sidewalls 50 preferably comprise separation bumper elements 63 , extending into the channels underneath flanking struts 72 in flanking sidewalls 60 .
- Separation bumper elements 63 typically include an outwardly slanted bottom face (not shown), facing essentially inwardly and downwardly.
- deepened bottom portion in structured centric recess 70 is used for manual access to unlocking element 82 from underneath.
- the top face of the central portion of unlocking element 82 is preferably disposed not higher than the bottom face of tab 66 in flanking sidewalls 60 , when unlocking element 82 is in a released position, shown in FIG. 1 ; whereas when unlocking element 82 is in an elevated position (not shown), the top face of the central portion of unlocking element 82 partially obstructs tab 66 in flanking sidewalls 60 ; thereby preventing inadvertent usage of crate 30 , while unlocking element 82 is in an elevated position (not shown).
- leaf-springs 88 of locking elements 80 spontaneously drive locking elements 80 in a downward direction which in turn drive unlocking element 82 in a downward direction as well.
- locking elements 80 are capable to assume a lower position within channels formed underneath flanking struts 72 in flanking sidewalls 60 ; thereby rendering crate 30 readily transformable into open conformation, shown in FIG. 1 .
- unlocking element 82 as well as locking elements 80 are readily replaceable in individual manner. Moreover even without or with dysfunctional unlocking element 82 , crate 30 still can be assembled into open conformation shown in FIG. 1 and used for its purpose.
- unlocking element 82 due to geometrical proportions of unlocking element 82 relatively to locking elements 80 , a translational lever is formed wherein the terminal portion of unlocking element 82 exerts a force onto a centric portion of locking elements 80 , whereby the terminal portion of locking elements 80 is consequently elevated a greater distance than the terminal portion of unlocking element 82 . Consequently upon effecting a relatively minor vertical translation of unlocking element 82 , a relatively major vertical translation of the terminal portion of locking elements 80 is achieved; rendering crate 30 more easily and readily foldable into a folded configuration (not shown).
- FIGS. 6A and 6B showing flaking sidewall 60 , employing safety catch mechanism 190 preventing inadvertent opening of rotary locking element 180 .
- Rotary locking element 180 is pivoted on pivot 184 positioned typically somewhat offset the structured centric recess, in flanking sidewall 60 .
- Rotary locking element 180 further comprises or embodies leaf-spring 188 , extending from the top face upwards and towards pivot 184 of rotary locking element 180 .
- Rotary locking element 180 is threaded into channel in flanking sidewall 60 , underneath flanking strut 72 . It is noted that the channel formed underneath flanking struts 72 is somewhat wider than terminal portion 186 of locking element 180 ; thereby sustaining radial displacement of the latter within the former. Locking element 180 is rotatable upon pivot 184 , in flanking sidewalls 60 ; thereby sustaining radial displacement of terminal portion 186 of locking elements 180 within channel formed underneath flanking strut 72 in flanking sidewalls 60 .
- Flanking sidewall 60 shown in FIGS. 6A and 6B further comprises exemplary safety catch mechanism 190 preventing inadvertent elevation rotation of rotary locking element 180 , within channel formed underneath flanking strut 72 in flanking sidewalls 60 .
- Rotary locking element 180 comprises exemplary extended protrusion 194 .
- the terminal portion of extended protrusion 194 is configured to be bent, folded or otherwise displaced in an upward direction, towards rotary locking element 180 , upon a force exerted from underneath, by the terminal portion of exemplary unlocking element 182 .
- top terminal portion of unlocking element 182 exerts a force onto the terminal portion of extended protrusion 194 ; whereby the terminal portion of extended protrusion 194 is displaced in an upward direction, towards rotary locking element 180 .
- rotary locking element 180 is capable to perform rotation upon pivot 184 , upon further elevation of unlocking element 182 in an upward direction, thereby sustaining radial displacement of terminal portion 186 of locking elements 180 within channel formed underneath flanking strut 72 in flanking sidewalls 60 .
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Abstract
Description
- The present invention pertains to containers, in particular foldable crates and locking mechanism therefor. In particular, the invention relates to advances in and elaborations of locking mechanisms for foldable crates.
- Foldable crates are widely used these days. There are numerous solutions known in the art for locking mechanisms for foldable crates. The general concept of such locking mechanisms is that a foldable crate can be secured in open conformation, by a locking mechanism, which is releasable by an actuator, typically a tab surrounding the handle of the crate. It is believed that the pertinent state-of-the-art is represented by: U.S. Pat. No. 7,861,878, U.S. Pat. No. 6,290,081, US20100230406, US20120091133 and US20100320202; EP2431283 and EP1655232, as well as by WO2010146190, WO2009100799 and particularly DE10137328.
- US20120091133 discloses a collapsible box including a plastic structure with a rectangular base, two ends, and two sides which are pivotably coupled to the base. The ends include centered parts combined with latches, which in one position anchor the sides and ends, while in another position the connection between the ends and the sides is released in order to collapse the elements. The collapsible box of US20120091133 is characterized in that the box includes an anchor device consisting of a series of rotary bodies that connect the latches to the centered part via two pairs of resilient parts and which, in the inoperative position thereof, hold the latches outwards, attaching the ends and the sides. When the central part is moved upward, the latches thus release the ends and the sides.
- U.S. Pat. No. 7,861,878 discloses a fastening device for folding boxes. The folding boxes include a bottom and four lateral walls coupled in jointed fashion to the edges of that bottom, two opposite walls each having a fastening device for ensuring the unfolding of the box. The fastening devices of U.S. Pat. No. 7,861,878 include a vertically displaceable central piece and lateral bolts with horizontal displacement for fastening the lateral walls via their adjacent edges. The fastening device of U.S. Pat. No. 7,861,878 includes elastic spring elements that link the central control piece with pairs of the lateral bolts. The spring elements, in the rest position, maintain the bolts in an engagement and fastening position. The release position of the bolts in U.S. Pat. No. 7,861,878 results when the spring elements pull the bolts against the resistance of the elastic elements.
- DE10137328 that is considered the most relevant prior art publication discloses an assembly, adapted to open and close side walls of a plastic and reusable box or container, which have a manual locking unit, with at least one projection, which grips over a ratchet hook on the longitudinal wall. The lock operating control is adapted to grip, carry the box or container and also unlock the side walls.
- The invention relates to advances in and elaborations of locking mechanisms for foldable crates.
- There is provided in accordance with embodiments of the present invention a foldable crate including 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 and unlocking mechanism.
- In accordance with some embodiments of the present invention, the locking mechanism includes a pair of rotary locking elements, pivoting upon axes on flanking sidewalls, as well as a pair of respective protrusions inwardly facing from longitudinal sidewalls.
- In accordance with some embodiments of the present invention, the unlocking mechanism includes a manual deactivator, configured to exert a rotational torque upon rotary locking elements.
- It should be understood, however, that the summary above is not intended to limit the invention to the particular forms and examples, rather on the contrary, is to cover all modifications, equivalents, and alternatives falling within the scope of the invention.
- The present invention will be understood and appreciated more comprehensively from the following detailed description taken in conjunction with the appended drawings in which:
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FIG. 1 an isometric view of an assembled foldable crate in an open conformation and locking/unlocking mechanism therefor, in accordance with an embodiment of the present invention; -
FIG. 2 is an exploded isometric view of a base platform, a longitudinal sidewall and a flanking sidewall of an embodiment of the foldable crate as well as of a pair of rotary locking elements of the locking mechanism thereof and manual deactivator of the unlocking mechanism thereof; -
FIG. 3A is a posterior perspective elevated view of the locking mechanism of the foldable crate; -
FIG. 3B is an enlarged posterior perspective elevated view of the locking mechanism of the foldable crate shown inFIG. 3A ; -
FIG. 4A is an elevated frontal cut-away view of the flaking sidewall, showing a terminal portion of a rotary locking element of the locking mechanism of the foldable crate; -
FIG. 4B is an enlarged elevated frontal cut-away view of the flaking sidewall, showing a terminal portion of a rotary locking element, shown inFIG. 5A ; -
FIG. 5A is an elevated perspective frontal cut-away view of the flaking sidewall, showing an inwardly facing protrusion on the longitudinal sidewall; -
FIG. 5B is an enlarged elevated perspective frontal cut-away view of the flaking sidewall, showing the inwardly facing protrusion on the longitudinal sidewall, shown inFIG. 5A ; -
FIG. 6A is a perspective frontal view of the flaking sidewall, incorporating another embodiment of locking/unlocking mechanism, with a safety catch feature preventing inadvertent opening of the crate; -
FIG. 6B is an enlarged frontal view of the flaking sidewall, incorporating another embodiment of locking/unlocking mechanism, with a safety catch feature preventing inadvertent opening of the crate, shown inFIG. 6A . - While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof have been shown merely by way of example in the drawings. The drawings are not necessarily complete and components are not essentially to scale; emphasis instead being placed upon clearly illustrating the principles underlying the present invention.
- Illustrative embodiments of the invention are described below. In the interest of clarity, not all features of actual implementation are described in this specification. It will of course be appreciated that in the development of any such actual embodiment, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with technology- or business-related constraints, which may vary from one implementation to another. Moreover, it will be appreciated that the effort of such a development might be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art having the benefit of this disclosure.
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FIGS. 1 and 2 show components of an embedment offoldable crate 30 as well as lockingelements 80 thereof.Foldable crate 30 comprisesbase platform 32.Base platform 32 has a plurality ofstructural recesses 34, disposed aboutlongitudinal portion 36 ofbase platform 32 andstructural recesses 38 disposed about flankingportion 40 thereof. The superior face oflongitudinal portions 36 ofbase platform 32 are positioned somewhat higher than the superior face of flankingportion 40. -
Foldable crate 30 further comprises a pair oflongitudinal sidewalls 50 and a pair of flankingsidewalls 60, of which just a single sidewall from each pair is shown.Longitudinal sidewalls 50 include a plurality of structural elements 52, disposed aboutbottom portion 54 of the former, whereas flankingsidewalls 60 include a plurality ofstructural elements 62, disposed about bottom portion 64 ofsidewalls 60. Structural elements 52 disposed aboutbottom portion 54 oflongitudinal sidewalls 50 further comprise longitudinal pivots 42 configured to form a hinged connection withstructural recesses 34, disposed aboutlongitudinal portion 36 ofbase platform 32; whereasstructural elements 62, disposed about bottom portion 64 of flankingsidewalls 60 further comprise flanking 44 pivots, configured to form a hinged connection withstructural recesses 38 disposed about flankingportion 40 ofbase platform 32 offoldable crate 30. Optionally, at least one of pivots 42 or 44 is a single extended rod, typically metallic, threaded respectively throughout the entire length oflongitudinal portion 36 or flankingportion 40 ofbase platform 32. -
Structural recesses 34, disposed aboutlongitudinal portions 36 ofbase platform 32 as well as withstructural recesses 38 disposed about flankingportions 40 ofbase platform 32 typically include apertures (not shown) adapted configured to receive longitudinal pivots 42 and/or flanking 44 pivots, respectively, thereby forming a hinged connection betweenlongitudinal sidewalls 50 andlongitudinal portion 36 as well as flankingsidewalls 60 flankingportions 40 ofbase platform 32.Longitudinal portions 36 ofbase platform 32 embodyingstructural recesses 34 are positioned somewhat higher than flankingstructural recesses 38 disposed about flankingportion 40 ofbase platform 32 embodyingstructural recesses 38, whereas longitudinal pivots 42 are positioned somewhat higher than flanking pivots 44; thereby providing forfolding flanking sidewalls 60 inwardly towards bottom and then foldinglongitudinal sidewalls 50 on top of flankingsidewalls 60 in a folded conformation (not shown)foldable crate 30. -
Longitudinal sidewalls 50 includetabs 56, adapted to serve as gripping handles.Longitudinal sidewalls 50 include flankingfacets 58 extending essentially perpendicularly along a portion of the vertical edges oflongitudinal sidewalls 50. It is further noted that flankingfacets 58 oflongitudinal sidewalls 50 preferably formenclosed channels 59 withinlongitudinal sidewalls 50. - Flanking sidewalls 60 include
tab 66, adapted to serve as a gripping handle. It is noted that flankingsidewalls 60 include side recesses 68, forming anopening sidewalls 60 allowing passage ofprotrusion 78 oflongitudinal sidewalls 50 upon opening andfolding crate 30. Flanking sidewalls 60 include flankingstruts 72, forming a channel which is in continuum withenclosed channels 59 formed by flankingfacets 58 withinlongitudinal sidewalls 50. - Flanking sidewalls 60 comprise structured centric recess 70, essentially surrounding
tab 66. Structured centric recess 70, of flankingsidewall 60, is adapted to accommodate unlockingelement 82. Structured centric recess 70 in flankingsidewalls 60 comprises a couple ofgrooves 76 along a portion of the sides thereof, adapted to accommodate ridges or extensions (not shown) of unlockingelement 82 and sustain vertical displacement of the latter within the former. - Referring now to
FIG. 3A to 5B which showrotary locking elements 80 in greater details.Rotary locking elements 80 are pivoted onpivots 84 positioned typically somewhat offset structured centric recess 70, in flankingsidewall 60.Rotary locking elements 80 further comprise or embody leaf-springs 88, extending from the top face upwards and towards theterminal portion 86 ofrotary locking elements 80. - Locking
elements 80 are threaded intochannels 59 in flankingsidewalls 60, underneath flanking struts 72. It is noted that the channels formed underneath flankingstruts 72 are somewhat wider than lockingelements 80; thereby sustaining radial displacement of the latter within the former. Lockingelements 80 are furnished with pivots, which are threaded intoapertures 84, at the top portion of flankingsidewalls 60. Lockingelements 80 are rotatable upon pivots threaded intoapertures 84, in flankingsidewalls 60; thereby sustaining radial displacement of the terminal portion of lockingelements 80 within channels formed underneath flankingstruts 72 in flankingsidewalls 60. -
Longitudinal sidewalls 50 comprise structuredprotrusions 78, extending inwardly from the inner faces oflongitudinal sidewalls 50.U-shaped cut 69 is formed essentially surroundingprotrusions 78, thereby renderingprotrusions 78 outwardly displaceable, upon pushing ontoprotrusions 78 in an outward direction, against the biasing force exerted upon deformation of the material at the basis ofU-shaped cut 69.Structured protrusions 78 oflongitudinal sidewalls 50 comprise upwardly oriented backupper face 71 and essentially vertically oriented backupper face 73, slightly upwardly inclined backwards. - Underneath flanking struts 72, flanking
sidewalls 60 compriserecesses 68 defining an opening towards the interior ofcrate 30.Recesses 68 in flankingsidewalls 60 allow structuredprotrusions 78 oflongitudinal sidewalls 50 to surpass the terminal portions of lockingelements 80, while unfoldingcrate 30 into open conformation, shown inFIG. 1 . Terminal portions of lockingelements 80 preferably comprise chamfered or beveled terminalfront face 86. Chamfered or beveled terminalfront face 86 of lockingelements 80 is to some extent inwardly slanted, facing somewhat towards the corner ofcrate 30. - To unfold
crate 30 into open conformation, shown inFIG. 1 , initiallylongitudinal sidewalls 50 are elevated and consequently rotated upwardly and away frombase platform 32, until the former are erected essentially perpendicularly to the latter. Then flankingsidewalls 60 are elevated and consequently rotated upwardly and away frombase platform 32, until terminal portions of lockingelements 80 collide from behind with structuredprotrusions 78. - Upon collision of structured
protrusions 78 with terminal portions of lockingelements 80 and particularly with chamfered or beveled terminalfront face 86 thereof, structuredprotrusions 78 are displaced in an outward direction, while the material at the basis ofU-shaped cut 69 is somewhat bent or deformed, forming a biasing force urging structuredprotrusions 78 in an inward direction. Alternatively or additionally, upon collision of terminal portions of lockingelements 80 with structuredprotrusions 78, terminal portions of lockingelements 80 are displaced in an upward direction, while being contiguously translated upon the surface of upwardly oriented backupper face 71 of structuredprotrusions 78 onlongitudinal sidewalls 50. - Ultimately, upon elevating flanking
sidewalls 60 and consequently rotating the same upwardly and away frombase platform 32, until the former are erected essentially perpendicularly to the latter, terminal portions of lockingelements 80 surpass structuredprotrusions 78. Upon surpassing terminal portions of lockingelements 80, structuredprotrusions 78 are spontaneously displaced in a inward direction, due to the biasing force formed by the deformed or bent material at the basis ofU-shaped cut 69 spontaneously urging structuredprotrusions 78 in an inward direction. Alternatively or additionally upon surpassing structuredprotrusions 78, terminal portions of lockingelements 80 are spontaneously displaced in a downward direction, due to the biasing force exerted by leaf-springs 88 of lockingelements 80, bouncing against inner top face of the top portion of flankingsidewalls 60. - Upon surpassing structured
protrusions 78, terminal portions of lockingelements 80 are become locked in front of structuredprotrusions 78 oflongitudinal sidewalls 50, whereby flankingsidewalls 60 are become locked in a perpendicular orientation relatively tobase platform 32,rendering crate 30 locked in open conformation, shown inFIG. 1 . - Unlocking
element 82 is slidable in structured centric recess 70, of flankingsidewalls 60. Ridges or extensions (not shown) of unlockingelement 82 are threaded intogrooves 76 of about structured centric recess 70 and slidable therein. Vertical translation of unlockingelement 82 upwards is restricted by the length ofgrooves 76. Leaf-springs 88 spontaneously drive unlockingelement 82 in a downward direction, by bouncing against inner top face of the top portion of flankingsidewalls 60. - Upon forceful manual elevation of unlocking
element 82 in an upward direction, terminal portions of unlockingelement 82 exert rotational torque onto lockingelements 80, causinglocking elements 80 to rotate upon pivots threaded intoapertures 84, in flankingsidewalls 60, so that the terminal portions of lockingelements 80 are radially displaced in an upward direction and assume a higher position within channels formed underneath flankingstruts 72 in flankingsidewalls 60; thereby renderingcrate 30 readily foldable into folded conformation (not shown). -
Enclosed channels 59 formed by flankingfacets 58 withinlongitudinal sidewalls 50 preferably compriseseparation bumper elements 63, extending into the channels underneath flankingstruts 72 in flankingsidewalls 60.Separation bumper elements 63 typically include an outwardly slanted bottom face (not shown), facing essentially inwardly and downwardly. Upon forceful manual elevation of unlockingelement 82 in an upward direction, the top faces of terminal portions of unlockingelement 82 collide withseparation bumper elements 63, preferably with an outwardly slanted bottom face thereof, thereby a normal force is exerted onto terminal portions of unlockingelement 82 and in turn onto flankingsidewalls 60 essentially inwardly and downwardly, forming a rotational torque onto flankingsidewalls 60, causing flankingsidewalls 60 to commence rotating upon flanking pivots 44, towardsbase platform 32, thus initiating the folding ofcrate 30 into folded conformation (not shown). - It is noted that deepened bottom portion in structured centric recess 70 is used for manual access to unlocking
element 82 from underneath. It is further noted that the top face of the central portion of unlockingelement 82 is preferably disposed not higher than the bottom face oftab 66 in flankingsidewalls 60, when unlockingelement 82 is in a released position, shown inFIG. 1 ; whereas when unlockingelement 82 is in an elevated position (not shown), the top face of the central portion of unlockingelement 82 partially obstructstab 66 in flankingsidewalls 60; thereby preventing inadvertent usage ofcrate 30, while unlockingelement 82 is in an elevated position (not shown). - Upon release of forceful elevation of unlocking
element 82 in an upward direction, leaf-springs 88 of lockingelements 80, spontaneously drive lockingelements 80 in a downward direction which in turn drive unlockingelement 82 in a downward direction as well. Upon spontaneous translation of unlockingelement 82 in a downward direction, lockingelements 80 are capable to assume a lower position within channels formed underneath flankingstruts 72 in flankingsidewalls 60; thereby renderingcrate 30 readily transformable into open conformation, shown inFIG. 1 . - It is noted that due to the modularity of
crate 30, unlockingelement 82 as well as lockingelements 80 are readily replaceable in individual manner. Moreover even without or with dysfunctional unlockingelement 82,crate 30 still can be assembled into open conformation shown inFIG. 1 and used for its purpose. - It is further noted that due to geometrical proportions of unlocking
element 82 relatively to lockingelements 80, a translational lever is formed wherein the terminal portion of unlockingelement 82 exerts a force onto a centric portion of lockingelements 80, whereby the terminal portion of lockingelements 80 is consequently elevated a greater distance than the terminal portion of unlockingelement 82. Consequently upon effecting a relatively minor vertical translation of unlockingelement 82, a relatively major vertical translation of the terminal portion of lockingelements 80 is achieved; renderingcrate 30 more easily and readily foldable into a folded configuration (not shown). - In accordance with some preferred embodiments of the present invention, reference is now made to
FIGS. 6A and 6B showing flakingsidewall 60, employingsafety catch mechanism 190 preventing inadvertent opening ofrotary locking element 180.Rotary locking element 180 is pivoted onpivot 184 positioned typically somewhat offset the structured centric recess, in flankingsidewall 60.Rotary locking element 180 further comprises or embodies leaf-spring 188, extending from the top face upwards and towardspivot 184 ofrotary locking element 180. -
Rotary locking element 180 is threaded into channel in flankingsidewall 60, underneath flankingstrut 72. It is noted that the channel formed underneath flanking struts 72 is somewhat wider thanterminal portion 186 of lockingelement 180; thereby sustaining radial displacement of the latter within the former. Lockingelement 180 is rotatable uponpivot 184, in flankingsidewalls 60; thereby sustaining radial displacement ofterminal portion 186 of lockingelements 180 within channel formed underneath flankingstrut 72 in flankingsidewalls 60. - Flanking
sidewall 60 shown inFIGS. 6A and 6B further comprises exemplarysafety catch mechanism 190 preventing inadvertent elevation rotation ofrotary locking element 180, within channel formed underneath flankingstrut 72 in flankingsidewalls 60.Rotary locking element 180 comprises exemplaryextended protrusion 194. The terminal portion ofextended protrusion 194 is configured to be bent, folded or otherwise displaced in an upward direction, towardsrotary locking element 180, upon a force exerted from underneath, by the terminal portion of exemplary unlockingelement 182. - Upon forceful elevation of unlocking
element 182 in an upward direction, top terminal portion of unlockingelement 182 exerts a force onto the terminal portion ofextended protrusion 194; whereby the terminal portion ofextended protrusion 194 is displaced in an upward direction, towardsrotary locking element 180. Thereafterrotary locking element 180 is capable to perform rotation uponpivot 184, upon further elevation of unlockingelement 182 in an upward direction, thereby sustaining radial displacement ofterminal portion 186 of lockingelements 180 within channel formed underneath flankingstrut 72 in flankingsidewalls 60. - However if no forceful elevation in an upward direction is applied to unlocking
element 182, lockingelement 180 is locked in place and rotation ofrotary locking element 180 uponpivot 184 is precluded, because the terminal face ofextended protrusion 194 is pushed against detent 192, whereby radial displacement ofterminal portion 186 of lockingelements 180 within channel formed underneath flankingstrut 72 in flankingsidewalls 60 is prevented. Consequently if lockingelement 180 are attempted of being rotated in an upward direction, for instance upon opening of the foldable crate,safety catch mechanism 190 preventing rotation ofrotary locking element 180 uponpivot 184, because the terminal face ofextended protrusion 194 is pushed against detent 192; whereby inadvertent folding of the foldable crate is prevented. - It will be appreciated by persons skilled in the art that the present invention is not limited by what has been particularly shown and described herein above. Rather the scope of the invention is defined by the claims which follow:
Claims (20)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/621,196 US9422087B1 (en) | 2015-02-12 | 2015-02-12 | Foldable crate and locking mechanisms therefor |
ES201530635U ES1140771Y (en) | 2015-02-12 | 2015-06-01 | FOLDING DRAWER AND BLOCKING MECHANISMS FOR THE SAME |
DE202015102816.4U DE202015102816U1 (en) | 2015-02-12 | 2015-06-01 | Collapsible box and associated locking mechanisms |
PCT/IL2016/050360 WO2016128986A2 (en) | 2015-02-12 | 2016-04-04 | Foldable crate and locking mechanisms therefor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/621,196 US9422087B1 (en) | 2015-02-12 | 2015-02-12 | Foldable crate and locking mechanisms therefor |
Publications (2)
Publication Number | Publication Date |
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US20160236818A1 true US20160236818A1 (en) | 2016-08-18 |
US9422087B1 US9422087B1 (en) | 2016-08-23 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/621,196 Active US9422087B1 (en) | 2015-02-12 | 2015-02-12 | Foldable crate and locking mechanisms therefor |
Country Status (4)
Country | Link |
---|---|
US (1) | US9422087B1 (en) |
DE (1) | DE202015102816U1 (en) |
ES (1) | ES1140771Y (en) |
WO (1) | WO2016128986A2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180002063A1 (en) * | 2015-01-16 | 2018-01-04 | Shanghai Hongyan Returnable Transit Packagings Co., Ltd | Folding box |
EP3512777A4 (en) * | 2016-09-15 | 2020-06-03 | Arena Packaging, LLC | Wall latching system |
CN112373922A (en) * | 2020-11-20 | 2021-02-19 | 苏州市百诺塑胶有限责任公司 | Folding box |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105600068B (en) * | 2016-02-29 | 2017-08-11 | 江汉大学 | Case is sent in a kind of express delivery of multi-functional volume adjustable with charge free |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA2273556A1 (en) | 1999-05-31 | 2000-11-30 | Thomas Gabriel Bela Merey | Foldable container |
DE10137328B4 (en) | 2001-07-31 | 2007-08-16 | Schoeller Wavin Systems Services Gmbh | Device for opening and locking folding side walls of boxes or containers, in particular multi-way containers |
JP4008472B2 (en) | 2003-08-13 | 2007-11-14 | 三菱樹脂株式会社 | Folding container |
ES2306558B1 (en) | 2005-12-27 | 2009-07-14 | Sp Berner Plastic Group, S.L. | ANCHORAGE DEVICE FOR FOLDING BOXES. |
DE102008060913A1 (en) | 2008-02-11 | 2009-08-13 | Fritz Schäfer GmbH | Device for unlocking hinged side walls of boxes or containers |
JP5334634B2 (en) | 2009-03-13 | 2013-11-06 | 三甲株式会社 | Folding container |
ES2350791B1 (en) | 2009-06-15 | 2011-11-16 | Sp Berner Plastic Group, S.L. | FOLDING BOX |
JP5390950B2 (en) | 2009-06-18 | 2014-01-15 | 三甲株式会社 | Folding container |
ES2426263T3 (en) | 2010-09-20 | 2013-10-22 | Ifco Systems Gmbh | Reinforced drawer |
DE102013109059A1 (en) * | 2013-08-21 | 2015-03-12 | Schoeller Arca Systems Gmbh | Locking device for locking and unlocking foldable or foldable side walls of a container |
-
2015
- 2015-02-12 US US14/621,196 patent/US9422087B1/en active Active
- 2015-06-01 ES ES201530635U patent/ES1140771Y/en not_active Expired - Fee Related
- 2015-06-01 DE DE202015102816.4U patent/DE202015102816U1/en active Active
-
2016
- 2016-04-04 WO PCT/IL2016/050360 patent/WO2016128986A2/en active Application Filing
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20180002063A1 (en) * | 2015-01-16 | 2018-01-04 | Shanghai Hongyan Returnable Transit Packagings Co., Ltd | Folding box |
US10532850B2 (en) * | 2015-01-16 | 2020-01-14 | Shanghai Hongyan Returnable Transit Transit Packagings Co., Ltd. | Folding box |
EP3512777A4 (en) * | 2016-09-15 | 2020-06-03 | Arena Packaging, LLC | Wall latching system |
CN112373922A (en) * | 2020-11-20 | 2021-02-19 | 苏州市百诺塑胶有限责任公司 | Folding box |
Also Published As
Publication number | Publication date |
---|---|
WO2016128986A2 (en) | 2016-08-18 |
US9422087B1 (en) | 2016-08-23 |
ES1140771U (en) | 2015-07-03 |
ES1140771Y (en) | 2015-09-29 |
WO2016128986A3 (en) | 2016-10-20 |
DE202015102816U1 (en) | 2015-06-17 |
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