JP2007119000A - Freely foldable box-shaped pallet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foldable box-shaped pallet capable of enhancing the load bearing performance of both right and left panels of a box-shaped pallet which is stackable in a folded state. <P>SOLUTION: Supporting parts 13 for stacking foldable pallets are erected on both front and rear ends of both right and left sides of a cargo bed 1 on the outer sides of both right and left panels. A laying material 15 of the cargo bed 1 is laid on a skeleton frame 14 of the cargo bed 1 at positions inside lower sides of both the right and left panels 2 so as not to support lower sides of both the right and left panels 2. Depth members 16a on the right and left sides constituting the skeleton frame 14 of the cargo bed 1 have an upper flat faces 21a for directly supporting the lower sides of the right and left panels 2, and a side panel positioning projection 24 for holding the lower sides of the right and left panels 2 is provided between the supporting parts 13 for stacking the foldable pallets adjacent to the upper flat face 21a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a foldable box-type pallet.

As a foldable box-type pallet, as described in Patent Document 1, legs that are placed on the left and right side panels of the lower pallet when the pallets are stacked are attached to the front and rear ends of the left and right sides of the loading platform. The left and right side panels are foldably connected to the left and right sides of the back panel, which are foldably connected to the back side of the cargo bed so as to be stacked on the bed, and are foldably connected to the inside of the back panel. The folding pallet stacking supports that support each leg of the upper pallet when stacking the folded pallets project upward on the outside of the left and right side panels, and the loading platform is in the front-rear direction of the left and right sides There is known a structure composed of a depth frame, a bone frame made up of a left and right frontage material spanned between both depth materials, and a laying material laid on the bone frame.
JP 2000-53132 A

  In this type of foldable box-type pallet, when folding, the left and right panels are folded outside the back panel, because the folding pallet stacking support that protrudes from the cargo bed to the outside of the left and right panels is an obstacle. Therefore, as disclosed in Patent Document 1, the left and right side panels are folded so as to overlap the back panel. In such a configuration, as is known in the type of foldable box-type pallet that does not have a folding pallet stacking support part, the protruding piece that is fitted and supported in the depth material of the cargo frame is supported. Since it cannot project from the lower sides of the left and right side panels, as disclosed in Patent Document 1, the left and right side panels are the left and right side sides of the loading platform laying material supported and fixed on the depth material of the loading platform bone frame. Will be supported on. In such a conventional configuration, the vertical load acting on the left and right side panels during stacking causes the lower sides of the left and right side panels to slide outward and cause misalignment. Even if it can be prevented by the supporting part for the purpose, there is no way to prevent the lower sides of the left and right side panels from slipping inward and causing a positional shift. For this reason, the load bearing performance at the time of stacking was supposed to be lowered.

  An object of the present invention is to provide a foldable box-type pallet capable of solving the conventional problems as described above, and the means thereof is shown with reference numerals of embodiments to be described later. In addition, legs 12 mounted on the left and right side panels 2 and 3 of the lower pallet when the pallets are stacked are attached to the front and rear ends of the left and right sides of the loading platform 1, respectively. The back panel 4 is foldably connected to the left and right sides of the back panel 4 foldably connected to the back side of the load bed 1 so as to be stacked on the load bed 1. Folding pallet stacking support portions 13 that support the legs 12 of the upper pallet when the pallets in the state are stacked are projected upward on the outer sides of the left and right side panels 2 and 3, and the loading platform 1 is arranged on both the left and right sides. Depth material in the front-rear direction 6a, 16b and the depth material 16a, 16b, and the frame material 14 which consists of the opening materials 17a-17e of the left-right direction constructed between both, and the laying material 15 laid on this bone frame 14 are foldable. In the box-type pallet, the laying material 15 is laid at a position inside the lower side of the left and right side panels 2 and 3 so as not to support the lower side of the left and right side panels 2 and 3, and the depth material 16 a of the bone frame 14. 16b has a flat upper surface 21a that directly supports the lower sides of the left and right side panels 2, 3, and the left and right side panels 2 between the folding pallet stacking support portions 13 adjacent to the flat upper surface 21a. , 3 is provided with a side panel positioning protrusion 24 sandwiching the lower side.

  In carrying out the present invention having the above-described configuration, specifically, as described in claim 2, the depth members 16a and 16b of the bone frame 14 include left and right side plate portions 20a and 20b and left and right side plate portions 20a and 20b. A flat upper surface 21a that directly supports the lower sides of the left and right side panels 2 and 3 on the upper surface of the upper plate portion 21. The side panel positioning protrusion 24 can be formed over the entire length of the depth members 16a and 16b by bending the upper plate portion 21.

  Further, as described in claim 3, the depth members 16a and 16b of the bone frame 14 are provided with a lower laying material support stage for supporting the side of the laying material 15 inside the lower sides of the left and right side panels 2 and 3. A surface 38 can be formed.

  Further, according to a fourth aspect of the present invention, the side panel positioning protrusion 24 has a steep angle on the outside with the flat upper surface 21a directly supporting the lower sides of the left and right side panels 2 and 3, and a gentle angle on the inside. It can be formed into a substantially triangular cross section rising at

  According to the foldable box-type pallet according to the present invention having the above-described configuration, even if the left and right side panels are constructed by arranging and fixing wires in a lattice shape as is well known, the lower sides of the left and right side panels The horizontal wires in the front-rear direction that constitute the front and rear are supported by the flat upper surface of the depth material placed on the left and right sides of the loading platform, so the horizontal wires in the front-rear direction that constitute the lower sides of the left and right panels with the vertical load when pallet stacking However, there is no risk of bending deformation locally. Of course, even if the laying material of the loading platform is constructed by arranging and fixing wire rods in a lattice shape as is well known in the art, this laying material is sandwiched between the depth material and the left and right side panels, and the pallet stage There is no fear that the vertical load at the time of loading will be received by the left and right wires of the laying material and bend. In addition, according to the configuration of the present invention, the side panel positioning protrusions that sandwich the lower sides of the left and right side panels between the folding pallet stacking support portions are provided adjacent to the flat upper surface of the depth material of the cargo frame. In addition, it is possible to reliably prevent the bottom sides of the left and right side panels supported on the flat upper surface of the depth member from slipping in any direction from inside to outside. Therefore, the load bearing performance during pallet stacking can be significantly improved.

  In addition, according to the structure of Claim 2, the depth material of the bone frame provided with the flat upper surface which directly supports the lower side of both right-and-left both-side panels, and the side panel positioning protrusion adjacent to this is made into one strip | belt-shaped iron plate. Can be configured easily and inexpensively by roll forming, etc., and the entire bottom side of the left and right side plate parts can be supported by a flat top surface continuous over the entire length of the depth material, further increasing the load bearing performance during stacking. Can be increased.

  Further, the laying material for the cargo bed, for example, the laying material having the mesh structure as described above can be supported and fixed to the frontage material laid between the depth materials on both the left and right sides. For example, the side of the laying material can be prevented from being deformed so as to hang down due to the load between the front and rear adjacent front materials, and the load can be increased even if the laying material is made of a relatively thin wire. it can.

  Furthermore, according to the configuration of claim 4, the left and right side panels can be folded while being surely prevented from slipping inward and causing a positional shift at the side surface rising at a steep angle outside the side panel positioning projection. When unfolding the left and right side panels with respect to the standing back panel to unfold the pallet, use the slope that rises at a gentle angle inside the side panel positioning projection to The side panel can be easily moved over the side panel positioning protrusion, and the folded pallet can be easily unfolded.

  A specific embodiment of the present invention will be described below with reference to the accompanying drawings. In FIGS. 1 and 2, 1 is a loading platform, 2 and 3 are left and right side panels that stand up from the left and right sides of the loading platform 1, and 4 is a loading platform 1 A back panel 5 rising from the rear side of the rear door 5 is a door panel rising from the front side of the loading platform 1. The left and right side panels 2 and 3 are swingably connected to the left and right side sides of the back panel 4 by coil hinges 6 and 7 having rotation axes along the left and right side sides of the back panel 4, The back panel 4 is swingably connected to the loading platform 1 at the front end side of the inward bent portion 4a by a coil hinge 8 having a rotation axis along the front end side of the inward bent portion 4a. The lower side of the panel 5 is connected to the front side of the loading platform 1 by a coil hinge 9 having a rotation axis along the front side of the loading platform 1 so as to be swingable. In the illustrated example, the door panel 5 includes a lower half portion 5a and an upper half portion 5b that are swingably connected to each other by a coil hinge 10 having a horizontal rotation axis, and each door panel lower half portion 5a. The upper half 5b is locked to the front sides of the left and right side panels 2 and 3 by the locking means 11 at a closed position where the front sides of the left and right side panels 2 and 3 are closed.

  The box-type pallet having the above-described configuration is folded so that the lock means 11 is released and the door panel 5 is stacked on the loading platform 1, and the left and right side panels 2 and 3 are folded on the inside of the back panel 4. By folding the back panel 4 so as to be superimposed on the loading platform 1 together with the left and right side panels 2 and 3 superimposed on the inside, the bulk can be reduced.

  Further, leg bodies 12 are attached below the front and rear ends of the left and right sides of the loading platform 1. These four legs 12 form a space for inserting a fork of a forklift on the lower side of the loading platform 1, and as shown in FIGS. 4A and 5A, when the box-type pallets are stacked, A lower opening fitting portion 12a for fitting to the front and rear ends of the upper sides of the left and right side panels 2 and 3 to prevent the upper and lower box-type pallets from shifting from front to back and left and right; And a grounding portion 12b that is landed inside the fitting portion 12a. Furthermore, folding pallet stacking support portions 13 are provided at both front and rear ends of the left and right sides of the carrier 1 of the box-type pallet. Specifically, these four folding pallet stacking support portions 13 are continuously connected upward from the respective leg bodies 12 and arranged outside the left and right side panels 2 and 3. When the pallets folded so that the panels 2 to 5 are stacked on the loading platform 1 are stacked as shown in FIGS. 4B and 5B, the legs 12 of the upper pallet are supported by the fitting portions 12 a.

  If the structure of the loading platform 1 is demonstrated concretely, as shown in FIG.3 and FIG.4, the loading platform 1 is comprised from the bone frame 14 and the laying material 15. FIG. The bone frame 14 is composed of depth members 16a and 16b arranged on the left and right sides of the loading platform 1, and left and right frontage members 17a to 17e constructed between the depth members 16a and 16b. The laying material 15 is of a mesh structure configured by electrical resistance welding of the lower front-rear direction wire 18 and the upper left-right direction wire 19 arranged in a lattice shape to each other at the intersection of the two, Between the depth members 16a and 16b on both the left and right sides of the bone frame 14, it is laid and fixed on the frontage members 17a to 17e. Each left and right direction wire 19 has a length that slightly protrudes from the front and rear direction wire 18 positioned at both ends in the left and right direction, and each front and rear direction wire 18 is positioned in the left and right direction at both ends in the front and rear direction. It has a length that overlaps the end of the wire 19. Thus, the lower side of the door panel 5 is connected to the left and right wire 19a located on the front side of the laying material 15 by the coil hinge 9, and the tip side of the inwardly bent portion 4a of the back panel 4 is laid. The coil 15 is connected to the second horizontal wire 19b from the rear side of the material 15 by the coil hinge 8.

  As shown in FIG. 10, the depth members 16a and 16b of the loading frame frame 14 are lower open mold members having left and right side plate portions 20a and 20b and an upper plate portion 21 connecting between the upper ends of both side plate portions 20a and 20b. In the outer plate 20a, ribs 22 that are bent inward at an intermediate height and bent pieces 23 that are bent inward from the lower side are respectively provided over the entire length of the outer plate 20a. The side panel positioning protrusion 24 is integrally formed over the entire length by bending the upper plate portion 21 on the inner side of the upper plate portion 21 (the side on the side where the laying material 15 is laid), The upper surface of the upper plate portion 21 outside the side panel positioning protrusion 24 forms a flat upper surface 21a that directly supports the lower sides of the left and right panels 2 and 3. The side panel positioning protrusion 24 has a substantially right-angled cross section having a side surface 24a rising at a steep angle on the outer side of the flat upper surface 21a and an inclined surface 24b rising at a gentle angle on the inner side.

  Further, as shown in FIGS. 10 and 11, the depth members 16a and 16b are provided with a set of two slits 25a and 25b, respectively, at locations corresponding to the frontage members 17a to 17e of the inner plate portion 20b. ing. On the other hand, each of the frontage members 17a to 17e is made of a groove material that is open on the upper side, and a tongue piece that can be inserted into a pair of slits 25a and 25b of depth members 16a and 16b at both ends in the longitudinal direction. When 27a and 27b protrude from the end edges of the parallel side plates 26a and 26b and the tongue pieces 27a and 27b are inserted into the slits 25a and 25b, as shown in FIG. The bottom plate portion 26c is configured to be flush with the lower ends of the depth members 16a and 16b.

  As shown in FIGS. 6 to 9, each leg 12 is connected to the upper side of the leg bottom plate 30 that forms the fitting portion 12a and the grounding portion 12b, and is opened laterally outward. A planar U-shaped columnar member 28 is attached to a corner between the columnar member 28 and the outer end of the leg bottom plate 30 by welding so as to close the laterally outward opening of the columnar member 28. The vertical member 29 extends upward from the depth members 16 a and 16 b of the loading platform 1 and constitutes the folding pallet stacking support portion 13. The columnar member 28 includes a vertical plate portion 28a that is bent from the inner side of the leg bottom plate member 30, and parallel side plate portions 28b and 28c that are bent from both sides of the vertical plate portion 28a. The leg bottom plate 30 and the columnar member 28 are formed by bending a single plate.

  The vertical member 29 is composed of a vertical plate material having a plate surface parallel to the length direction of the depth members 16a and 16b of the loading platform 1, and an upper portion with respect to a portion below the upper surface of the depth members 16a and 16b. In order to avoid interference with the left and right side panels 2 and 3, a bent portion is provided at an intermediate height so as to slightly protrude outward, and above the columnar member 28 in order to increase the buckling strength against vertical load. A cylindrical reinforcing rib 31 projecting inward is formed on both sides of this portion, and a reinforcing rib 32 projecting outward in a mountain shape is formed at a substantially central position in the width direction over the entire height. is there. Further, one of the cylindrical reinforcing ribs 31 on both sides of the vertical member 29 protrudes upward from the upper end of the vertical member 29, and as shown in FIG. When the pallets in the folded state are stacked using the support portion 13, the fitting portion 12a of the leg 12 of the upper pallet is moved in the front-rear direction from the upper end of the vertical member 29 (the upper end of the support portion 13 for folding pallet stacking). A folding pallet positioning projection 33 is provided to prevent the pallet from coming off.

  The width of the columnar member 28 in the leg body 12 having the above-described configuration is substantially the same as the interval between the two front and rear front members 17a and 17b and the rear front and rear two front members 17d and 17e. In the inner half of the upper end, a protrusion 34 is formed that fits between the front and rear two frontage members 17a and 17b or between the rear front and rear two frontage members 17d and 17e. The upper end of the columnar member 28 (the upper ends of the parallel side plate portions 28b and 28c) between the protrusion 34 and the portion provided with the cylindrical reinforcing rib 31 below the intermediate bent portion 29 is the depth material support surface. It is 28d. The vertical member 29 has a portion that closes the laterally outward opening of the columnar member 28 substantially the same as the width of the columnar member 28, and includes cylindrical reinforcing ribs 31 on the upper side, that is, on both sides. The front portion is configured to be an inverted convex shape by widening the protruding portion so as to protrude from the width of the columnar member 28 to both sides.

  The assembly of the loading platform 1 will be described. First, the front ends 17a to 17e are provided between the pair of left and right depth members 16a and 16b. For example, the tongue pieces 27a and 27b at both ends of the front ends 17a to 17e are provided on the front members The slits 25a and 25b are inserted and arranged. At this time, the depth members 16a and 16b and the frontage members 17a to 17e are not welded to each other. In this state, the four legs 12 are fitted into the projections 34 of the respective columnar members 28 from the lower side between the front and rear two front members 17a and 17b and between the rear front and rear two front members 17d and 17e. In addition, the depth members 16a and 16b are fitted between the protrusions 34 of the respective columnar members 28 and the vertical members 29, and the depth members 16a and 16b are supported by the depth member support surface 28d at the upper end of the columnar member 28. The columnar member 28 including the protrusion 34 of each leg 12 is welded to the contact boundary portion between the depth members 16a and 16b and the frontage members 17a, 17b, 17d, and 17e. Further, the contact boundary portion between the outer surface of the depth members 16a and 16b and the vertical member 29 (reinforcing cylindrical rib 31) of each leg 12 is welded. When the legs 12 are welded, it is also possible to additionally weld the depth members 16a and 16b and the frontage materials 17a, 17b, 17d and 17e at positions adjacent to the columnar members 28 of the legs 12.

  As described above, the four legs 12 (including the vertical member 29) are welded to the depth members 16a and 16b and the frontage members 17a, 17b, 17d, and 17e. 16b and frontage materials 17a, 17b, 17d, and 17e are fixedly connected to each other in a perpendicular direction, and the cargo frame frame 14 including the four legs 12 is completed. At this time, the intermediate gap member 17c is not fixed to the depth members 16a and 16b. Next, the laying material 15 pre-assembled with the lower front / rear direction wire 18 and the upper left / right direction wire 19 is placed between the depth members 16a and 16b on the frontage members 17a to 17e, and each lower front / rear direction. A loading platform 1 provided with four legs 12 by fixing the crossing portions of the wire 18 and the parallel side plates 26a, 26b of the front ends 17a to 17e and the lower front and rear direction wires 18 to each other by electric resistance welding. To complete. It should be noted that the intermediate gap member 17c that is not fixed to the depth members 16a and 16b is fixed to the bone frame 14 via the laying material 15 by welding with the respective lower front and rear direction wires 18 of the laying material 15. become.

  Each panel 2-5 with respect to the loading platform 1 is assembled | attached as conventionally well-known. As shown in FIGS. 4A and 5A, the foldable box-type pallet assembled in this way includes left and right side panels 2 and 3 of the lower pallet and four legs 12 (fitting portions 12a) of the upper pallet. 4 folds, each of the pallets folded so that the panels 2 to 5 are stacked on the loading platform 1 are projected upward from the loading platform 1 of the lower pallet as shown in FIGS. 4B and 5B. The pallet stacking support portion 13 (vertical member 29 connected to each leg 12) and the four legs 12 (fitting portion 12a) of the upper pallet can be used for stacking, The lower sides of the left and right side panels 2, 3 of the assembled pallet are the upper surfaces of the left and right depth members 16a, 16b, that is, the side panel positioning, as shown by the phantom lines in FIGS. 4A, 7 and 10. Protrusion 2 It is supported directly by the flat top surface 21a located outside the.

  The side panels 2 and 3 have a mesh structure formed by arranging the inner horizontal wire 35 and the outer vertical wire 36 in a lattice pattern and welding the two at the crossing portions as is conventionally known. Therefore, the lowermost inner horizontal wire 35 constituting the lower side of the side panels 2 and 3 is directly supported by the flat upper surfaces 21a of the left and right depth members 16a and 16b. Therefore, as shown in FIGS. 4A and 5A, when the pallets are stacked using the left and right side panels 2, 3, the lower side of the side panels 2, 3 is the inner side due to the vertical load acting on each side panel 2, 3. Is prevented by the side panel positioning protrusions 24 (side surfaces 24a rising substantially vertically) of the left and right depth members 16a and 16b. , 3 is blocked by the folding pallet stacking support portion 13 (vertical member 29 connected to each leg 12) on the loading platform 1 side standing up outside. Accordingly, the side panels 2 and 3 are not torsionally deformed by the vertical load acting on the side panels 2 and 3, and the vertical load can be received by the buckling strength of the side panels 2 and 3. .

  When folding the box-type pallet having the above configuration, the protruding height of the side panel positioning protrusion 24 from the flat upper surface 21a of the left and right depth members 16a, 16b is low, so that the back panel 4 is tilted slightly backward. The left and right side panels 2 and 3 can be folded so as to overlap the inside of the back panel 4. Further, when assembling the folded pallet, even if the left and right side panels 2 and 3 are moved outward with the back panel 4 standing almost vertically, the inner side of the side panel positioning projection 24 is gently inclined. By the presence of the inclined surface 24b, the lower side of the side panels 2 and 3 can be easily moved over the side panel positioning protrusion 24 to the outside.

  In order to increase the buckling strength of the side panels 2 and 3 during pallet stacking, as shown in FIG. Two outer vertical wires 36a and 36b can be thicker than the other vertical wires 36.

  Moreover, in the said embodiment, although the flat upper surface 21a and the protrusion 24 for a side panel positioning which continued over the full length of the depth materials 16a and 16b of the loading frame frame 14 in the position which supports the left and right both-side panels 2 and 3 were provided. When stacking pallets, the vertical load does not act on the entire area of the side panels 2 and 3 on the average, but the load concentrates on the place supporting the leg 12 of the upper pallet, so that the total length of the depth members 16a and 16b is increased. A flat upper surface 21a only in a region that supports a region directly below a portion that supports the legs 12 of the upper pallet of the left and right side panels 2 and 3 (regions in which thick outer vertical wires 36a and 36b are used in the illustrated example). And side panel positioning protrusions 24 may be provided. Specifically, as shown in FIG. 12, the flat upper surface 21a is formed at a required position of the depth members 16a and 16b formed of the upper open channel shape in the carrier frame 14 of the conventional box-type pallet of this type. And the other member 37 having the side panel positioning protrusion 24 is put on and fixed by welding or the like, or the other member 37 is attached to a required portion of the depth members 16a and 16b formed of upper-side groove members. It can be fitted and fixed by welding or the like.

  Furthermore, in the above embodiment, both ends of the left and right direction wire 19 of the loading platform laying material 15 are not supported by the depth materials 16a and 16b of the loading platform frame 14, so the load resistance at this location is lowered. When this is a problem, as shown in FIG. 13, a support step surface 38 that supports the end portion of the left-right direction wire 19 can be integrally formed on the inner plate portion 20 b of the depth members 16 a and 16 b. . If necessary, the end portions of the left and right wire members 19 and the support step surface 38 can be fixed together by electric resistance welding or the like.

It is a perspective view which shows the whole pallet. It is a schematic perspective view explaining the folding structure of each panel around the loading platform of a pallet. It is a top view explaining the structure of the loading platform provided with the leg, Comprising: The right half is a top view which shows the state which excluded the laying material. Fig. A is a front view of the main part showing the stacked state of the assembled pallets, and Fig. B is a front view of the main part showing the stacked state of the folded pallets. Fig. A is a side view of the main part showing the stacked state of the assembled pallets, and Fig. B is a side view of the main part showing the stacked state of the folded pallets. Fig. A is a side view showing the leg portion of the cargo bed from the outside, and Fig. B is a vertical side view showing the leg portion of the cargo bed from the inside. FIG. 6B is a front view of FIG. 6A. FIG. 6B is a partially cutaway plan view of FIG. 6A. It is a perspective view of the leg body in which the support part for folding pallet stacking was provided continuously. It is a principal part expanded longitudinal cross-sectional view of FIG. It is a perspective view of the principal part which shows the structural member of a carrier frame frame in a decomposition | disassembly state. It is a perspective view of the principal part which shows the modification of the depth material of a carrier frame. It is a vertical front view of the principal part which shows another modification of the depth material of a carrier frame.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Loading platform 2, 3 Left and right both sides panel 4 Back panel 5 Door panel 12 Leg body 13 Folding pallet stacking support part 14 Loading frame frame 15 Loading frame installation material 16a, 16b Bone frame depth material 17a-17e Materials 18 and 19 Wire materials 20a and 20b for laying material Side plate portion 21 for depth material Upper plate portion 21a for depth material Side panel support flat upper surface 24 Side panel positioning protrusion 24a Side surface 24b rising at a steep angle Slope 25a rising at a gentle angle , 25b A set of two slits 27a, 27b

Claims (4)

  Legs placed on the left and right side panels of the lower pallet when the pallets are stacked are attached to the front and rear ends of the left and right sides of the loading platform. The left and right side panels are placed on the loading platform at the rear side of the loading platform. The left and right sides of the back panel, which are foldably connected so as to be stacked, are foldably connected so as to be stacked inside the back panel, and each leg of the upper pallet is placed on the loading platform when stacking folded pallets. Folding pallet stacking support that supports the body protrudes upward on the outside of the left and right side panels, and the loading platform is a front and rear depth material on both left and right sides, and a left and right frontage material In a foldable box-type pallet composed of a bone frame composed of the frame frame and a laying material laid on the bone frame, the laying material is laid at a position inside the lower sides of the left and right side panels and the left and right side panels. The depth material of the bone frame has a flat upper surface that directly supports the lower sides of the left and right panels, and the folding pallet stacking support portion is adjacent to the flat upper surface. A collapsible box-type pallet provided with side panel positioning protrusions that sandwich the lower sides of the left and right side panels.   The depth material of the bone frame is composed of a lower open mold material that has the entire length of the left and right side plate parts and the upper plate part connecting the upper ends of the left and right side plate parts, and the upper surface of the upper plate part is the lower side of the left and right side panels. 2. The foldable box-type pallet according to claim 1, wherein the flat upper surface is directly supported, and the side panel positioning protrusion is formed over the entire length of the depth member by bending the upper plate portion.   The foldable box according to claim 1 or 2, wherein the depth material of the bone frame is formed with a laying material support step surface that is one step lower and supports the side of the laying material inside the lower sides of the left and right side panels. Mold pallet. The side panel positioning protrusion is formed in a substantially triangular cross-section in which the outer side with the flat upper surface that directly supports the lower sides of the left and right side panels rises at a steep angle and the inner side rises at a gentle angle. The foldable box pallet according to any one of the above.

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