Slope and slope utilization method

Abstract

The invention provides a slope for moving a heavy object, which can be manufactured with low environmental load and low cost. The ramp is provided with: a case made of a corrugated board, the case including a bottom plate portion extending in a first direction and a pair of side wall portions extending in the first direction, facing each other and connected to the bottom plate portion, the height of the side wall portions decreasing as the side wall portions advance in the first direction, the case having a cross-section orthogonal to the first direction showing a channel shape; and a reinforcing member which is formed by filling a plurality of flat plate-shaped members made of a corrugated board into an internal space surrounded by the housing in a state of being stacked without adhering to each other. The plurality of flat plate-shaped members are filled in the housing in such a manner that the corrugation direction of the core is substantially parallel to the surface of the side wall portion.

Description

Technical Field

[0001] The present invention relates to a slope and a method for utilizing the same. Background Art

[0002] Heavy objects are usually transported while being placed on a loading platform (packaging material) such as a pallet. When unloading the heavy objects from the packaging material at the destination, sometimes a loading and unloading device such as a hand lift or a forklift is used. However, depending on the destination, such loading and unloading devices may not exist. In view of such a situation, wooden ramps are often used to transport heavy objects together with the heavy objects.

[0003] Usually, casters for moving are provided on the heavy object. When unloading the heavy object from the packaging material to the installation surface, a wooden slope is provided to be connected to the packaging material in the direction along the installation surface, so that the casters attached to the heavy object slide along the slope. In this way, the heavy object can be taken out of the packaging material and moved to the installation surface. An example of a wooden slope is disclosed in the following patent document 1.

[0004] However, the wooden slopes sent to the transport destination are often disposed of directly at the transport destination, which is not preferable from the viewpoint of environmental load. In addition, the cost of wooden slopes is relatively high, so there is a concern that the cost required for transportation will increase.

[0005] From this viewpoint, Patent Document 2 below proposes using a slope made of corrugated cardboard, which has low material cost and low environmental impact due to its recyclability, instead of a wooden slope.

[0006] Prior art literature

[0007] Patent Literature

[0008] Patent Document 1: Japanese Patent Application Laid-Open No. 8-207935

[0009] Patent Document 2: Japanese Patent Application Publication No. 2006-096356 Summary of the invention

[0010] Problems to be solved by the invention

[0011] However, the durability of the corrugated cardboard slope is lower than that of the wooden slope. Specifically, when the casters attached to the heavy object are made to slide on the surface of the corrugated cardboard slope, the corrugated cardboard slope may be deformed.

[0012] In order to suppress the deformation of the slope made of corrugated cardboard, the above-mentioned Patent Document 2 proposes a scheme of supporting the slope with a support body. In Patent Document 2, from the perspective of environmental load, a reinforcing member formed by stacking corrugated cardboard is also used as the support body. More specifically, the reinforcing member is a block formed by stacking corrugated cardboard cut into a trapezoidal shape and bonding the stacked surfaces. The slope is connected to the reinforcing member, and by rotating the slope, the reinforcing member is located between the inclined surface of the slope and the setting surface. According to Patent Document 2, through such a structure, even if the casters attached to the heavy object slide on the slope, the load resistance of the slope can be improved by the reinforcing member.

[0013] The block-shaped reinforcing member disclosed in Patent Document 2 is formed by stacking a plurality of corrugated cardboard sheets while bonding the facing surfaces of the plurality of corrugated cardboard sheets to each other using an adhesive. However, in this method, a bonding process using an adhesive is required each time the number of stacked corrugated cardboard sheets increases, and the manufacturing process becomes complicated. Therefore, when the manufacturing of a slope including such a reinforcing member is outsourced to another company, the cost involved in obtaining the slope may increase.

[0014] Furthermore, in the reinforcing member disclosed in Patent Document 2, since an adhesive is applied to the surface of each corrugated cardboard, there is a problem that it cannot be reused or is difficult to reuse, and the environmental load increases.

[0015] In view of the above problems, the present invention aims to provide a slope for moving heavy objects that can be manufactured with low environmental load and low cost. Another object of the present invention is to provide a method for using the slope.

[0016] Technical solutions to solve problems

[0017] The slope of the present invention is characterized by having:

[0018] A shell made of corrugated cardboard, comprising: a bottom plate portion extending in a first direction; and a pair of side walls extending in the first direction, connected to the bottom plate portion and facing each other, and having a height that decreases as it advances in the first direction, wherein a cross section of the shell orthogonal to the first direction is in a channel shape; and

[0019] The reinforcing member is formed by filling a plurality of flat plate-shaped members made of corrugated cardboard into the internal space surrounded by the shell in a state of being stacked without being bonded to each other.

[0020] The plurality of flat plate-shaped members are filled in the housing in an orientation such that the corrugated direction of the core is substantially parallel to the surface of the side wall portion.

[0021] In this specification, the "channel shape" refers to a shape equivalent to a U-shape or a C-shape.

[0022] The above-mentioned ramp has a shell made of corrugated cardboard. The side wall portion included in the shell made of corrugated cardboard shows a shape in which the height decreases as it advances in the extending direction (first direction). A reinforcing member filled with a plurality of flat plate-shaped members is arranged in the internal space surrounded by the shell composed of the side wall portion and the bottom plate portion. That is, if the bottom plate portion is arranged to be located vertically above, the bottom plate portion or other components arranged on the upper surface of the bottom plate portion constitute an inclined surface (sliding surface). In addition, if the bottom plate portion is arranged to be located vertically below, typically arranged to be located on the setting surface, the side portion of the reinforcing member composed of a plurality of flat plate-shaped members, or other components arranged on the upper surface of the side portion constitute an inclined surface (sliding surface). As described later, in the case where the ramp includes a pair of shells, the bottom plate portion is located on both the setting surface side and the sliding surface side.

[0023] According to the above structure, similar to the conventional ramp, by configuring the ramp to be connected to the packaging material, the casters attached to the heavy objects unloaded from the packaging material can be located on the sliding surface of the ramp, and slide on the sliding surface to the installation surface (typically the floor surface). In this way, the impact on the heavy objects caused by the height difference can be suppressed. In particular, when the heavy objects are precision equipment, the impact generated when crossing the part with the height difference may affect the quality of the product, so such a situation needs to be avoided. By using the above ramp, the casters can slide along the sliding surface to the installation surface, so that the goods can be unloaded from the packaging material while avoiding the impact on the heavy objects.

[0024] As described above, the slope of the present invention has a shell made of corrugated cardboard and a reinforcing member formed by filling a plurality of flat plate-shaped members in the inner space surrounded by the shell. That is, since both the shell and the reinforcing member are made of corrugated cardboard, the environmental load is low and the cost is low compared to wooden slopes.

[0025] The reinforcing member is formed by filling a plurality of flat plate-shaped members in the internal space formed by the shell. Therefore, it is not necessary to bond the surfaces of the respective flat plate-shaped members with an adhesive. Therefore, the environmental load is also low compared to the slope disclosed in Patent Document 2. In addition, since the reinforcing member can be formed only by filling a plurality of flat plate-shaped members in the shell, it can be manufactured simply and the manufacturing cost can also be reduced compared to the slope disclosed in Patent Document 2 which requires bonding the surfaces of the respective flat plate-shaped members with an adhesive.

[0026] Corrugated cardboard is weak against the force applied in the direction orthogonal to the corrugation direction of the core, but is strong against the force applied in the direction along the corrugation direction. According to the above structure, the multiple flat plate-shaped members constituting the reinforcing member are filled in the shell in an orientation such that the corrugation direction of the core is substantially parallel to the surface of the side wall portion. That is, when the casters attached to the heavy object slide on the slope surface located vertically above the reinforcing member, the direction of the load applied by the heavy object to the reinforcing member is along the corrugation direction of the core of the multiple flat plate-shaped members. As a result, even if the transported object sliding on the slope surface is a heavy object, the effect of suppressing slope deformation can be obtained. As the heavy object, a product of about 100kg to 500kg is assumed. For example, when a product with a weight of 300kg is moved from the packaging material to the setting surface, the above slope can be used.

[0027] The concept of filling a plurality of flat plate-shaped members with the corrugated direction of the core and the surface of the side wall portion "substantially parallel" includes the following situation: more than 90% of the flat plate-shaped members filled in the internal space are arranged in an orientation in which the corrugated direction of the core is substantially parallel to the surface of the side wall portion. In addition, in this specification, the concept of "substantially parallel" between the corrugated direction of the core and the surface of the side wall portion includes the following situation: in addition to the situation in which the corrugated direction of the core is completely parallel to the surface of the side wall portion, in other words, in addition to the situation in which the angle formed by the corrugated direction of the core with respect to the surface of the side wall portion is 0°, it also includes the situation in which the absolute value of the angle is less than 10°.

[0028] When the slope is set on the installation surface (typically a floor surface), it is preferred that the main surfaces of the pair of side walls are substantially perpendicular to the installation surface. Here, "substantially perpendicular" is a concept that includes the case where the angle between the surfaces of the pair of side walls and the installation surface is 90°, and also includes the case where the angle is 80° to 100°.

[0029] Alternatively, the shell includes a first shell in which the bottom plate is arranged on the installation surface side and a second shell in which the bottom plate is arranged vertically above the installation surface, and the shells are arranged in a manner that one of the first shell and the second shell surrounds the other.

[0030] The reinforcing member is formed by filling the plurality of flat plate-shaped members in the internal space surrounded by the bottom plate portion of the first housing, the bottom plate portion of the second housing, and the side wall portions of the first housing and the second housing.

[0031] According to the above structure, the bottom plate of the first housing is arranged on the installation surface, and the bottom plate of the second housing is located vertically above the bottom plate of the first housing. At this time, the surface formed by the bottom plate of the second housing becomes an inclined surface, constituting a surface for the caster to slide.

[0032] The plurality of plate-shaped members constituting the reinforcing member are filled into the internal space surrounded by the bottom plate of the first shell, the bottom plate of the second shell, and the side walls of the first shell and the second shell. Therefore, the stability of the plurality of plate-shaped members is further improved.

[0033] The slope may further include a sliding plate-like member that is arranged on the upper surface of the bottom plate portion of the second shell in a state extending in the first direction and is made of paper harder than the shell.

[0034] As described above, the first shell and the second shell are both made of corrugated cardboard. If the bottom plate portion of the first shell is used as a sliding surface to slide the casters of the heavy object, although the reinforcing member formed by filling a plurality of flat plate-shaped members is located vertically below it, the possibility that the bottom plate portion is deformed due to the weight of the heavy object cannot be denied. In contrast, as in the above-mentioned structure, a sliding plate-shaped member made of paper harder than the shell is arranged on the upper surface of the bottom plate portion of the first shell, and the surface of the sliding plate-shaped member is used as a sliding surface to slide the casters of the heavy object, thereby further improving the effect of suppressing the deformation of the slope of the bottom plate portion including the first shell.

[0035] As the material of the sliding plate-shaped member, it is preferable to use paper tube base paper. However, as the material of the sliding plate-shaped member, any paper harder than the shell can be used, and it is not limited to paper tube base paper.

[0036] When the heavy object is moved from the packaging material to the setting surface, the casters of the heavy object are made to slide in the descending direction along the surface of the sliding plate-like member provided on the upper surface of the bottom plate portion of the first housing. When the heavy object approaches the setting surface, although the height difference between the position on the upstream side (packaging material side) of the slope and the setting surface is greatly reduced, it is still expected that there is a height difference between the top of the sliding plate-like member and the setting surface. As described above, especially when the heavy object is a precision device, there is a situation where it is desired to avoid the impact generated when crossing the portion with the height difference.

[0037] From this point of view, the top end of the sliding plate-like member in the first direction may protrude forwards more than the top end of the housing in the first direction. According to this structure, when the caster moves to the surface of the sliding plate-like member in the area protruding forwards more than the housing, the sliding plate-like member is further inclined toward the installation surface due to the weight of the heavy object. As a result, the inclined surface formed by the sliding plate-like member can be connected to a height position extremely close to the installation surface, and the heavy object can be placed on the installation surface with minimal impact on the heavy object.

[0038] Alternatively, the slope is divided into a plurality of partial slopes in the first direction.

[0039] The plurality of partial slopes respectively include the shell and the reinforcing member,

[0040] The bottom plate portions of the housing included in the adjacent pair of partial slopes and adjacent in the first direction are connected to each other by a connecting member,

[0041] A pair of adjacent partial slopes are foldable via the connecting member.

[0042] The longer the length of the slope in the extension direction is extended, the smaller the inclination angle of the slope surface (sliding surface) can be. When the caster attached to the heavy object slides on the sliding surface while the heavy object is moved from the packaging material such as a pallet to the setting surface, the side with a smaller inclination angle of the slope surface is easy to move the caster. In view of the operability of the caster movement, the slope preferably increases the length in the extension direction to a certain extent. The inclination angle of the slope surface is preferably less than 6°, and more preferably less than 5°.

[0043] On the other hand, as described above, the ramp is intended to be transported to the transport destination together with the heavy object. During transport, if an excessively long ramp is packed together with the heavy object, packing materials with a height or width larger than the packing materials set according to the size of the heavy object may be required, and the transport workability may also be reduced.

[0044] In contrast, according to the above structure, even if the slope is long in the extension direction (first direction), it can be packed together with the heavy object in a folded state during transportation. Thus, the packaging material will not be enlarged, and the slope with a long length in the extension direction can be used at the transportation destination.

[0045] The connecting member is provided from the viewpoint of preventing adjacent partial slopes from separating and dispersing from each other. From the viewpoint of environmental load and cost, the connecting member is preferably made of paper. The connecting member is in a folded state during transportation, and is folded and extended when used at the transportation destination. From this viewpoint, the connecting member preferably has the property of being easy to bend and easy to return to the original state from the bent state. Typically, kraft paper and the like can be cited.

[0046] As a detailed example, the following method can also be adopted, that is, for each reinforcement member of the adjacent partial slope, a part is cut off from the bottom surface side in the vertical direction, and a connecting member is arranged at the position of the cut. For convenience, one of the adjacent pair of partial slopes is called "first partial slope" and the other is called "second partial slope". A cut in the vertical direction is provided at a part of the reinforcement member of the first partial slope on the side of the second partial slope. Similarly, a cut in the vertical direction is provided at a part of the reinforcement member of the second partial slope on the side of the first partial slope. And, the connecting member is arranged in the space formed by the cuts of the two. The connecting member is located in the space formed by the cuts of the reinforcement member provided in the first partial slope and the space formed by the cuts of the reinforcement member provided in the second partial slope, and is bonded to the surface of the shell (specifically, the bottom plate) provided by each partial slope.

[0047] According to this structure, the first and second slope sections can be folded toward the installation surface via the connecting member. In addition, the connecting member is unfolded from the folded state to form a slope surface (sliding surface) extending in the first direction when the first and second slope sections are connected.

[0048] In addition, under the above-mentioned structure, the area where the connecting member contacts the bottom plate of the partial slope needs to be bonded using an adhesive or the like. However, compared with the slope of Patent Document 2, the area of ​​the area to be bonded using an adhesive is very small. In addition, considering the overall size of the slope, the bonding area is only a very small specific area near the boundary where the partial slopes are connected to each other. That is, except for this area, the area constituting the slope hardly uses an adhesive. Therefore, if the bonding area is excluded, most of the slope can be recycled.

[0049] The plurality of partial slopes may each include a sliding plate-like member that is arranged on an upper surface of the bottom plate portion of the first shell in a state extending in the first direction and is made of paper harder than the shell.

[0050] At this time, the connecting member may also be arranged on the sliding plate-like member side. As a detailed example, a partial cutout may be arranged in the vertical direction from the bottom side on each sliding plate-like member of the adjacent partial slopes, and the connecting member may be arranged at the position of the cutout. A cutout in the vertical direction is arranged at a portion of the sliding plate-like member on the second partial slope side of the sliding plate-like member of the first partial slope. Similarly, a cutout in the vertical direction is arranged at a portion of the sliding plate-like member on the first partial slope side of the sliding plate-like member of the second partial slope. And, the connecting member is arranged in the space formed by the cutouts of the two. The connecting member is located in the space formed by the cutout of the sliding plate-like member arranged on the first partial slope and in the space formed by the cutout of the sliding plate-like member arranged on the second partial slope, and is bonded to the surface of each sliding plate-like member. As a result, the first partial slope and the second partial slope will not be separated, and folding via the connecting member can be achieved.

[0051] It should be noted that, in the case of this structure, since a cutout is provided in a part of the sliding plate-like member, the strength of the sliding plate-like member may also be partially reduced. From this point of view, it is preferable to set the sliding plate-like member to a multilayer structure. Specifically, it is also possible that the sliding plate-like member is provided with: a first sliding plate-like member in contact with the upper surface of the bottom plate portion of the second shell; and a second sliding plate-like member in contact with the upper surface of the first sliding plate-like member, and the cutout is provided in the second sliding plate-like member. In this case, considering the amount corresponding to the thickness to be cut off, it is preferable to make the thickness of the second sliding plate-like member thicker than the first sliding plate-like member.

[0052] As another example, a connecting member may be arranged on a portion of the upper surface of the sliding plate-like member of each of the adjacent partial slopes. Specifically, the connecting member is arranged so as to span the upper surface of a portion of the sliding plate-like member of the first partial slope on the side of the second partial slope and the upper surface of a portion of the sliding plate-like member of the second partial slope on the side of the first partial slope. The connecting member is bonded to a portion of the upper surface of the sliding plate-like member of the first partial slope and a portion of the upper surface of the sliding plate-like member of the second partial slope, respectively, by an adhesive or the like.

[0053] In the case of this structure, if the caster attached to the heavy object is made to slide on the sliding surface, a small height difference corresponding to the thickness of the connecting member is generated when the caster passes through the area where the connecting member is configured. However, the connecting member is a material that can be folded as described above, and is typically made of paper such as kraft paper. Therefore, compared with the sliding plate-like member composed of paper tube base paper, etc., the material is soft, so it is compressed in the vertical direction by pressing as the heavy object passes, and the thickness is reduced. Therefore, when the caster is slid, the influence of the height difference associated with the thickness of the connecting member is almost not generated.

[0054] Alternatively, the top end of the sliding plate-like member included in one of the adjacent pair of partial slopes, i.e., the first partial slope, protrudes in the first direction toward the other of the adjacent pair of partial slopes, i.e., the second partial slope, from the shell included in the first partial slope, thereby forming a protruding portion.

[0055] The top end of the sliding plate-shaped member included in the second partial slope retreats in the first direction in a direction farther away from the first partial slope than the shell included in the second partial slope, thereby forming a retreat portion in a region sandwiched between the top end of the sliding plate-shaped member included in the second partial slope and the shell.

[0056] When the first partial slope and the second partial slope are transformed from a folded state to a state where both are adjacent to each other in the first direction via the connecting member, the protruding portion formed on the first partial slope is located inside the receding portion formed on the second partial slope.

[0057] According to the above structure, when the first partial slope and the second partial slope are changed from a folded state to an extended state, the protrusion is inserted into the retreating portion. Thus, when the first partial slope and the second partial slope are extended, the boundary position of the sliding plate-like member of the first partial slope and the sliding plate-like member of the second partial slope can be offset in the extension direction (first direction) relative to the boundary position of the shells of the partial slopes of the two parts. Thus, even if the load from the heavy object is applied vertically downward when the heavy object passes through the boundary position of the shells of the partial slopes of the two parts, the deformation of the slope can be suppressed.

[0058] From the viewpoint of improving strength, the sliding plate-like member may also be set as a multi-layer structure. Specifically, the sliding plate-like member may include: a first sliding plate-like member in contact with the upper surface of the bottom plate portion of the first shell; and a second sliding plate-like member in contact with the upper surface of the first sliding plate-like member. In this case, the top end of the first sliding plate-like member included in the first partial slope protrudes further toward the second partial slope side than the shell included in the first partial slope in the first direction, thereby forming a protruding portion. In addition, the top end of the first sliding plate-like member included in the second partial slope is retreated in a direction farther away from the first partial slope than the shell, thereby forming a retreated portion in an area sandwiched by the second sliding plate-like member included in the second partial slope, the top end of the first sliding plate-like member, and the shell. Furthermore, when the first partial slope and the second partial slope are transformed from the folded state to the state where both are adjacent to each other in the first direction via the connecting member, the protruding portion formed on the first partial slope is inserted into the receding portion formed on the second partial slope.

[0059] Furthermore, the end positions of the second sliding plate-shaped members in the first direction may be the same as those of the housing.

[0060] According to this structure, when the first partial slope and the second partial slope are extended, the boundary position of the first sliding plate-like member of the first partial slope and the first sliding plate-like member of the second partial slope can be offset in the extension direction (first direction) relative to the boundary position of the second sliding plate-like members of the partial slopes. In addition, similarly to the above, the boundary position of the first sliding plate-like members of the partial slopes can also be offset in the first direction relative to the boundary position of the housings of the partial slopes.

[0061] The first sliding plate-like member is clamped by the second sliding plate-like member and the housing in the vertical direction. Therefore, the retreat portion formed by retreating the top end of the first sliding plate-like member of the second partial slope constitutes a groove-shaped space, which is clamped by the second sliding plate-like member and the housing in the vertical direction, and the concave bottom is defined by the top end of the first sliding plate-like member in the first direction. When the partial slopes of both are extended, the top end of the first sliding plate-like member of the first partial slope is inserted into the groove-shaped space. At this time, the second sliding plate-like member disposed on the upper surface of the first sliding plate-like member of the first partial slope is located near the top end of the second sliding plate-like member of the adjacent second partial slope. As a result, the first sliding plate-like members of the partial slopes of both sides play a role in locking the partial slopes of both sides.

[0062] When the protrusion formed by the top end of the sliding plate-like member of the first partial slope is positioned in the retreated portion formed by retreating the top end of the sliding plate-like member of the second partial slope, the protrusion may contact the corners of the plurality of flat plate-like members existing in the internal space surrounded by the housing on the second partial slope side. If such contact occurs, it may be difficult to position the protrusion in the retreated portion.

[0063] From this point of view, the plurality of plate-shaped members constituting the reinforcing member included in the second partial slope may each be chamfered at a position corresponding to a position vertically below the receding portion. Thus, when the protruding portion is inserted into the receding portion, the protruding portion is less likely to contact the plate-shaped members.

[0064] The slope may include a guide member that covers one or both of the side wall portions of the housing from the outside, has a shape that protrudes vertically upward from the side wall portion, and is arranged to stand upright and extend in the first direction.

[0065] When the heavy object is large, it is difficult to visually confirm the width of the caster when sliding on the slope using casters, so it is considered necessary to perform the sliding operation carefully to avoid the caster from falling off the slope. According to the above structure, since a guide member protruding in the vertical direction than the slope is provided, it is easy to identify the boundary position in the width direction of the slope even when the large heavy object is slid along the slope, and the operation of sliding without falling off the caster becomes easy.

[0066] In view of the operability during sliding, the width of the slope, in other words, the length of the bottom plate of the housing in the direction perpendicular to the extension direction and the vertical direction, is preferably 3 times or more, more preferably 4 times or more, the width of the caster. However, if the width of the slope is too long, the slope itself will become larger, so it is preferably 8 times or less of the width of the caster.

[0067] When the above-mentioned slope is used, a plurality of the slopes extending in the first direction may be prepared and arranged on the installation surface in a manner separated from each other.

[0068] On each of the inclined surfaces formed by the bottom plate portions of the plurality of slopes or by a surface parallel to the bottom plate portions, casters provided on the transported object slide in a descending direction from a side having a higher vertical height position toward the installation surface side.

[0069] Furthermore, when the slope includes the guide member, the caster may be caused to slide on each of the inclined surfaces provided on the plurality of slopes so as not to go beyond the outer side of the guide member.

[0070] Effects of the Invention

[0071] According to the present invention, a ramp for moving a heavy object which can be manufactured with low environmental load and low cost is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] Figure 1 This is a diagram schematically showing an example of a scene using a slope according to one embodiment.

[0073] Figure 2 Observed from above Figure 1 A schematic top view of the situation shown.

[0074] Figure 3 It is a perspective view schematically showing the structure of the slope according to the first embodiment.

[0075] Figure 4 Yes Figure 3 The ramp 1 shown is a schematic cross-sectional view when cut along the line V4 - V4.

[0076] Figure 5 is from Figure 4 In the figure, only the housing 10 is extracted and the first housing 11 and the second housing 12 are separated and illustrated.

[0077] Figure 6 is from Figure 4 Only the housing 10 is extracted and illustrated in the figure.

[0078] Figure 7 Observed from the Y direction Figure 3 The housing 10 is shown in a schematic partial side view.

[0079] Figure 8 Observed from the Y direction Figure 4 The flat plate-like member 21 shown is a schematic partial side view.

[0080] Fig. 9 Yes Figure 8 The flat plate-like member 21 shown is a schematic cross-sectional view when it is cut along the line V9-V9.

[0081] Fig.10 Yes Figure 3 The diagram is a schematic perspective view showing an enlarged view of the vicinity of the top portion of the slope 1 on the +X side.

[0082] Fig.11A Yes Figure 3 The illustrated schematic partial side view is an enlarged view of the vicinity of the tip portion on the +X side of the slope 1 as viewed from the Y direction, and the guide member 71 is omitted from the illustration.

[0083] Fig. 11B Yes Figure 3 The illustrated schematic partial side view is an enlarged view of the vicinity of the tip portion on the +X side of the slope 1 as viewed from the Y direction, and the guide member 71 is omitted from the illustration.

[0084] Fig.12 It is modeled after Figure 4 A schematic cross-sectional view showing another structural example of the slope 1 .

[0085] Fig.13 It is modeled after Figure 4 A schematic cross-sectional view showing another structural example of the slope 1 .

[0086] Fig.14 It is modeled after Figure 4 A schematic cross-sectional view showing another structural example of the slope 1 .

[0087] Fig.15 It is modeled after Figure 3 A perspective view schematically shows a ramp 1 according to a second embodiment.

[0088] Fig.16 It is a perspective view schematically showing a state where the ramp 1 according to the second embodiment is folded.

[0089] Fig.17 Yes Fig.15 The ramp 1 of the second embodiment shown is a schematic cross-sectional view when cut along the line V17-V17.

[0090] Fig.18 Yes Fig.17 The ramp 1 shown is a schematic illustration of a situation in which it is slightly bent in the region of the connecting element 51 .

[0091] Fig.19 Yes Fig.17 The slope 1 shown is a schematic diagram when it is bent at the location of the connecting member 51 until the first partial slope 1a overlaps with the second partial slope 1b.

[0092] Fig. 20 yes Fig.17 The partially enlarged view is an enlarged view of the side of the reinforcing member 20 provided in the first partial slope 1a close to the second partial slope 1b.

[0093] Fig.21 yes Fig.17 The partially enlarged view is an enlarged view of the side of the reinforcing member 20 provided in the second partial slope 1b, which is close to the first partial slope 1a.

[0094] Fig. 22 yes Fig.18 , which is a partially enlarged view of the vicinity of the connecting member 51.

[0095] Fig.23 yes Fig.17 , which is a partially enlarged view of the vicinity of the connecting member 51.

[0096] Fig.24 Yes Fig.15 The ramp 1 of the third embodiment shown is a schematic cross-sectional view when cut along the line V17-V17.

[0097] Fig.25 Yes Fig.24 The ramp 1 shown is a schematic illustration of a situation in which it is slightly bent in the region of the connecting element 51 .

[0098] Fig.26 Yes Fig.24 The slope 1 shown is a schematic diagram when it is bent at the location of the connecting member 51 until the first partial slope 1a overlaps with the second partial slope 1b.

[0099] Fig. 27 yes Fig.24 The partially enlarged view is an enlarged view of the end of the first partial slope 1a on the second partial slope 1b side. The illustration of the connecting member 51 is omitted.

[0100] Fig.28 yes Fig.24 The partially enlarged view is an enlarged view of the end of the second partial slope 1b on the first partial slope 1a side. The illustration of the connecting member 51 is omitted.

[0101] Fig.29 yes Fig.24 , which is a partially enlarged view of the vicinity of the connecting member 51.

[0102] Fig.30 Yes Fig.15 Another configuration example of the slope 1 according to the third embodiment shown is a schematic cross-sectional view when cut along the line V17-V17.

[0103] Fig.31 Yes Fig.30 The ramp 1 shown is a schematic illustration of a situation in which it is slightly bent in the region of the connecting element 51 .

[0104] Fig.32 Yes Fig.30 The slope 1 shown is a schematic diagram when it is bent at the location of the connecting member 51 until the first partial slope 1a overlaps with the second partial slope 1b.

[0105] Fig.33 It is modeled after Figure 3 A perspective view schematically showing a ramp 1 according to a fourth embodiment.

[0106] Fig.34 Yes Fig.33 The ramp 1 shown is a schematic cross-sectional view when cut along the line V34 - V34.

[0107] Fig.35 Yes Fig.34 The ramp 1 shown is a schematic illustration of a situation in which it is slightly bent in the region of the connecting element 51 .

[0108] Fig.36 Yes Fig.35 The slope 1 shown is a schematic diagram when it is bent at the location of the connecting member 51 until the first partial slope 1a overlaps with the second partial slope 1b, and the second partial slope 1b overlaps with the third partial slope 1c.

[0109] Fig.37 yes Fig.34 The partially enlarged view is an enlarged view of the vicinity of the connecting member 51 connecting the first partial slope 1a and the second partial slope 1b.

[0110] Fig.38 yes Fig.34 The partially enlarged view is an enlarged view of the vicinity of the connecting member 51 connecting the second partial slope 1b and the third partial slope 1c.

[0111] Fig.39 yes Fig.35 The partially enlarged view is an enlarged view of the vicinity of the connecting member 51 connecting the first partial slope 1a and the second partial slope 1b.

[0112] Fig.40 yes Fig.35 The partially enlarged view is an enlarged view of the vicinity of the connecting member 51 connecting the second partial slope 1b and the third partial slope 1c.

[0113] Fig.41 Yes Fig.33 Another structure of the ramp 1 is shown as a schematic cross-sectional view when cut along the line V34 - V34.

[0114] Fig.42 Yes Fig.41 The ramp 1 shown is a schematic illustration of a situation in which it is slightly bent in the region of the connecting element 51 .

[0115] Fig.43 Yes Fig.41 The slope 1 shown is a schematic diagram when it is bent at the location of the connecting member 51 until the partial slopes ( 1 a , 1 b , 1 c ) overlap each other.

[0116] Fig.44 yes Fig.41 The partially enlarged view is an enlarged view of the vicinity of the connecting member 51 connecting the first partial slope 1a and the second partial slope 1b.

[0117] Fig.45 Yes Fig.33 Another structure of the ramp 1 is shown as a schematic cross-sectional view when cut along the line V34 - V34.

[0118] Fig.46 Yes Fig.45 The ramp 1 shown is a schematic illustration of a situation in which it is slightly bent in the region of the connecting element 51 .

[0119] Fig.47 Yes Fig.45 The slope 1 shown is a schematic diagram when it is bent at the location of the connecting member 51 until the partial slopes ( 1 a , 1 b , 1 c ) overlap each other.

[0120] Fig.48 yes Fig.45 The partially enlarged view is an enlarged view of the vicinity of the connecting member 51 connecting the first partial slope 1a and the second partial slope 1b.

[0121] Fig.49 This is a diagram showing only the casing 10 included in the ramp 1 according to another embodiment. DETAILED DESCRIPTION

[0122] The embodiments of the slope and the method for using the slope of the present invention are described with reference to the accompanying drawings. It should be noted that the following drawings are schematic drawings. The dimension ratios on the drawings may not be consistent with the actual dimension ratios, and the dimension ratios between the drawings may not be consistent. In addition, the number of components illustrated in the drawings is only an example.

[0123] [First embodiment]

[0124] A first embodiment of the slope will be described with reference to the drawings. Figure 1 This is a diagram schematically showing an example of a scene in which the slope 1 according to the present embodiment is used.

[0125] The heavy object 5 (the object to be transported) is transported to the transport destination using packaging materials 7 such as a pallet. After that, the heavy object 5 is unloaded from the packaging materials 7 to a setting surface 9 at the transport destination and moved to a target position (not shown) at the transport destination. Casters 6 are attached to the heavy object 5, and after being unloaded to the setting surface 9, the heavy object 5 is usually moved to the target position while sliding on the setting surface 9 using the casters 6.

[0126] The heavy object 5 placed on the upper surface of the packaging material 7 is located vertically above the installation surface 9 by a height h7 of the packaging material 7. Therefore, when the heavy object 5 is removed from the packaging material 7 to the installation surface 9, a height difference corresponding to the height h7 is generated.

[0127] When the weight 5 exceeds 100 kg, it is difficult to stably unload it from the packaging material 7 to the installation surface 9 by manpower. In addition, since there is a height difference equivalent to the height h7, an external impact may be applied to the weight 5 when it is unloaded on the installation surface 9. In particular, when the weight 5 is a precision device, such an impact may affect the quality of the device, which is not desirable.

[0128] From this point of view, if the ramp 1 is set in a manner connected to the packaging material 7 in the surface direction of the setting surface 9, and the casters 6 of the heavy object 5 slide along the inclined surface 2 (slope surface) of the ramp 1 in the direction d1 (descending direction), the heavy object 5 can be stably moved from the upper surface of the packaging material 7 until it reaches the setting surface 9.

[0129] exist Figure 1 In the figure, an XYZ coordinate system is also described in which a plane parallel to the installation surface 9 is set as an XY plane and a direction perpendicular to the XY plane is set as a Z direction. In the following description, this coordinate system is also appropriately referred to. The Z direction typically corresponds to the vertical direction.

[0130] In this specification, when a direction is expressed with a distinction between positive and negative directions, it is recorded with a positive and negative sign, such as "+X direction" and "-X direction". When a direction is expressed without distinguishing between positive and negative directions, it is simply recorded as "X direction". That is, in this specification, when it is simply recorded as "X direction", both "+X direction" and "-X direction" are included. The same applies to the Y direction and the Z direction.

[0131] Figure 2 Observed from above Figure 1 However, the weight 5 and the caster 6 are schematically shown in a state where they are arranged on the inner bottom of the packaging material 7.

[0132] exist Figure 2 , the two slopes 1 are shown to be arranged in a state separated from each other in the Y direction. The casters 6 attached to the weight 5 slide on the inclined surfaces 2 of the two slopes 1, respectively, so that the weight 5 can smoothly reach the installation surface 9.

[0133] As described later, Figure 2 The ramp 1 shown has a guide member 71 disposed at the outer edge in the Y direction (width direction). The guide member 71 protrudes in the +Z direction from the ramp 1. By providing the guide member 71, the operator can easily identify the boundary position in the width direction of the ramp 1 when sliding the caster 6 along the inclined surface 2 of the ramp 1, and can easily perform the operation of sliding the caster 6 without getting off the wheel to the outside of the inclined surface 2.

[0134] Below, refer to Figure 3 to Figure 11B, the structure of slope 1 is described in detail.

[0135] Figure 3 It is a perspective view schematically showing the structure of the slope 1 . Figure 4 Yes Figure 3 A schematic cross-sectional view of the slope 1 when it is cut along the line V4-V4.

[0136] like Figure 3 As shown, the ramp 1 has a housing 10 extending along the X direction. The X direction corresponds to the "first direction".

[0137] like Figure 4 As shown, in this embodiment, the housing 10 includes a first housing 11 and a second housing 12 . Figure 5 is from Figure 4 In the figure, only the housing 10 is extracted and the first housing 11 and the second housing 12 are separated and illustrated. Figure 6 is from Figure 4 Only the housing 10 is extracted and illustrated in the figure.

[0138] like Figure 5-6 As shown, each housing 10 (first housing 11, second housing 12) has a bottom plate 15 and a pair of side walls 16 facing each other. The bottom plate 15 is connected to the side walls 16. That is, each housing 10 shows a channel shape when cut along a cross section perpendicular to the X direction. As described above, in this specification, "channel shape" refers to a shape equivalent to a U-shape or a C-shape.

[0139] Each housing 10 is made of corrugated cardboard.

[0140] like Figure 6 As shown, one of the shells 10 (here, the second shell 12) surrounds the other shell (here, the first shell 11). More specifically, the side wall portion 16 of the second shell 12 (recorded as "side wall portion 16b" for convenience) is located outside the side wall portion 16 of the first shell 11 (recorded as "side wall portion 16a" for convenience). As a result, the shell 10 forms an internal space 17 surrounded by the bottom plate portion 15 and the side wall portion 16 on its inner side. Figures 4 to 6 In the example shown, the bottom plate portion 15 (referred to as “bottom plate portion 15 a ” for convenience) of the first housing 11 is located on the installation surface 9 (see Figure 1 , Figure 2 ) side, the bottom plate portion 15 (described as “bottom plate portion 15 b ” for convenience) of the second housing 12 is located on the inclined surface 2 side vertically above (on the +Z side) the installation surface 9 .

[0141] In other words, if Figure 6As shown, the bottom plate portion 15a of the first housing 11 forms the bottom surface of the internal space 17, and the bottom plate portion 15b of the second housing 12 forms the top surface of the internal space 17. In addition, the side wall portion 16a of the first housing 11 forms the inner side surface of the internal space 17.

[0142] Figure 7 1 is a schematic partial top view of the housing 10 when viewed from the Y direction. Figure 7 As shown in FIG. 1 , the housing 10 has a shape in which the height (length in the Z direction) decreases as it goes toward the +X direction. That is, the height (length in the Z direction) of the internal space 17 also decreases as it goes toward the +X direction.

[0143] like Figure 2 As shown, the guide member 71 is disposed so as to cover at least one side wall portion 16 of the housing 10 from the outside. The guide member 71 protrudes vertically upward from the side wall portion 16 and extends in the X direction.

[0144] Return again Figure 4 The ramp 1 includes a reinforcing member 20. The reinforcing member 20 is formed by stacking a plurality of flat plate-shaped members 21, 21, ... In more detail, the plurality of flat plate-shaped members 21, 21, ... are stacked in the Y direction. Each flat plate-shaped member 21 is made of corrugated cardboard.

[0145] In more detail, the reinforcing member 20 is formed by stacking a plurality of flat plate-shaped members 21, 21, ... in a manner that fills the internal space 17 surrounded by the housing 10. Moreover, no special bonding treatment is performed on the contact surfaces of the flat plate-shaped members 21, 21, .... By stacking a plurality of flat plate-shaped members 21, 21, ... in a manner that fills the internal space 17, even if the contact surfaces of the flat plate-shaped members 21, 21, ... are not bonded to each other, the flat plate-shaped members 21, 21, ... can be stably located in the internal space 17.

[0146] As described above, each flat plate-shaped member 21, 21, ... is made of corrugated cardboard. Moreover, each flat plate-shaped member 21, 21, ... is arranged so that the corrugation direction of the core substantially becomes the Z direction. Figure 8-Figure 9 Provide explanation.

[0147] Figure 8 Observed from the Y direction Figure 4 The flat plate-like member 21 shown is a schematic partial top view. Fig. 9 Cut along the V9-V9 line Figure 8 The flat plate-like member 21 shown is a schematic cross-sectional view.

[0148] As mentioned above, the flat plate member 21 is made of corrugated cardboard. Fig. 9As shown, the corrugated paperboard has a pair of liner boards 24, 24 and a corrugated core 25 located between the pair of liner boards 24. Figure 8-Figure 9 As shown, the flat plate-shaped member 21 provided in the ramp 1 is arranged so that the direction in which the top 25a of the core 25 extends, that is, the corrugated direction, substantially becomes the Z direction.

[0149] In this embodiment, if Figures 4 to 7 As shown, the surface of the side wall portion 16 of the housing 10 is depicted to be arranged parallel to the Z direction. That is, in the flat plate-shaped member 21 provided in the ramp 1, the ridge direction thereof is substantially parallel to the surface of the side wall portion 16.

[0150] As described above, the plurality of flat plate-shaped members 21, 21, ... are stacked and arranged in the Y direction in such a manner as to fill the internal space 17 surrounded by the housing 10. The pair of side wall portions 16, 16 forming the housing 10 are opposite to each other in the Y direction. That is, the plurality of flat plate-shaped members 21, 21, ... are arranged in a state where the main surfaces are substantially parallel to the pair of side wall portions 16, 16 forming the housing 10.

[0151] That is, the ramp 1 comprises: a housing 10 made of corrugated cardboard, the height (length in the Z direction) of which substantially decreases as it advances in the +X direction; and a reinforcing member 20 composed of a plurality of flat plate-shaped members 21, 21, ... made of corrugated cardboard arranged in a manner to fill the inner space 17 inside the housing 10. Therefore, the upper surface (at Figure 6 In the example, the bottom plate portion 15b of the second housing 12 forms an inclined surface 2 (refer to Figure 1 ), which is reinforced by a reinforcing member 20 below.

[0152] In particular, the plurality of flat plate-shaped members 21, 21, ... forming the reinforcing member 20 are arranged so that the corrugated direction of the center is substantially in the Z direction. That is, the load resistance in the Z direction is improved by the reinforcing member 20. Thus, when the caster 6 attached to the weight 5 is made to slide on the inclined surface 2, even if a load from the weight 5 is applied vertically downward (-Z direction), the deformation of the slope 1 can be suppressed.

[0153] When manufacturing the ramp 1, for example, the following steps are adopted. First, the first housing 11 is prepared with the bottom plate 15 located on the vertically lower side (the installation surface 9 side). Next, a plurality of flat plate-shaped members 21, 21, ... are stacked and arranged so as to fill the internal space 17 surrounded by the bottom plate 15 and the pair of side wall portions 16 of the first housing 11. Next, the second housing 12 is arranged from the vertically upper side so as to surround the outer side of the first housing 11.

[0154] like Figure 4As shown, the ramp 1 of this embodiment is additionally provided with a sliding plate-like member 40 on the upper surface of the housing 10, more specifically, on the upper surface of the bottom plate portion 15b of the second housing 12 forming the top surface of the internal space 17. In this embodiment, the sliding plate-like member 40 is a multi-layer structure. More specifically, the sliding plate-like member 40 includes a first sliding plate-like member 41 in contact with the bottom plate portion 15b of the second housing 12 and a second sliding plate-like member 42 in contact with the upper surface of the first sliding plate-like member 41.

[0155] The slide plate-shaped member 40 is made of paper that is harder than the housing 10, in other words, harder than corrugated cardboard. The slide plate-shaped member 40 is typically made of paper core paper.

[0156] The sliding plate-shaped member 40 is located on the upper surface of the housing 10 extending in the X direction, in other words, on the upper surface of the inclined surface formed by the housing 10. Therefore, the sliding plate-shaped member 40 substantially forms the inclined surface 2 located on the most +Z side of the slope 1 (see Figure 1 ). By arranging the sliding plate-shaped member 40 formed of a harder material than the housing 10 on the upper surface of the housing 10, the caster 6 attached to the weight 5 is not easily deformed even when sliding.

[0157] The tip of the sliding plate-shaped member 40 on the +X side is preferably arranged to protrude forward from the tip of the housing 10 on the +X side. Figure 10 to Figure 11B Provide explanation. Fig.10 It is a schematic perspective view showing an enlarged view of the vicinity of the top end portion of the slope 1 on the +X side. Figure 11A to Figure 11B Observed from the Y direction Fig.10 The top portion of the slope 1 shown in the figure is a schematic partial side view, and the guide member 71 is omitted. Figure 11A to Figure 11B The casters 6 are shown in the figure. However, for the convenience of illustration, the weight 5 is omitted.

[0158] exist Fig.10 In the example shown, the first slide plate member 41 located on the side close to the housing 10 protrudes forward (to the +X side) from the housing 10. In addition, the second slide plate member 42 located on the upper surface of the first slide plate member 41 has its top end set back from the top end of the first slide plate member 41.

[0159] like Fig.11AAs shown in FIG. 1 , the caster 6 attached to the weight 5 slides on the upper surface of the second sliding plate-shaped member 42 along the d1 direction toward the installation surface 9. Since the top end 41a of the first sliding plate-shaped member 41 protrudes forward (to the +X side) than the housing 10, at this moment, a free space 43 is formed vertically below the top end 41a of the first sliding plate-shaped member 41. Afterwards, when the caster 6 further moves in the d1 direction and reaches the vicinity of the top end 41a of the first sliding plate-shaped member 41, as shown in FIG. Fig. 11B As shown, due to the weight of the weight 5, the first slide plate-shaped member 41 is further inclined vertically downward in the free space 43. As a result, the inclined surface 2 formed by the second slide plate-shaped member 42 can be connected to a height position extremely close to the installation surface 9.

[0160] (Other structural examples)

[0161] Figure 12 to Figure 14 It is modeled after Figure 4 A schematic cross-sectional view showing another configuration example of the ramp 1 according to the present embodiment.

[0162] like Fig.12 As shown, the slope 1 may include a single sliding plate-shaped member 40 .

[0163] like Fig.13 As shown, the slope 1 may not include the sliding plate member 40. Fig.13 In the case of the slope 1 shown in FIG. 1 , the bottom plate portion 15 (see FIG. 1 ) of the housing 10 (specifically, the second housing 12 ) Figure 6 ) directly forms an inclined surface 2, along which the caster 6 slides.

[0164] like Fig.14 As shown, the ramp 1 may also be constructed with a single housing 10. In this case, the plurality of flat plate-shaped members 21, 21, ... constituting the reinforcing member 20 are in a free state vertically downward. However, as described above, by stacking the plurality of flat plate-shaped members 21, 21, ... in a manner that fills the internal space 17 surrounded by the housing 10, the plurality of flat plate-shaped members 21, 21, ... can be stably positioned.

[0165] [Second embodiment]

[0166] The second embodiment of the ramp 1 will be described mainly with respect to the parts different from the first embodiment. The same reference numerals are given to the same components as those of the first embodiment, and the description thereof will be omitted as appropriate. The same treatment is also applied to the third embodiment and subsequent embodiments.

[0167] The slope 1 of this embodiment is different from the first embodiment in that it is foldable. The same applies to the following third and fourth embodiments.

[0168] Fig.15 It is modeled after Figure 3 A schematic perspective view showing the structure of the slope 1 of this embodiment. Fig.15 As shown in FIG. 1 , the slope 1 of the present embodiment is divided into a plurality of partial slopes in the X direction. Hereinafter, the partial slope on the side close to the installation surface 9, in other words, on the +X side and on the side with a lower height, is referred to as a "first partial slope 1a", and the partial slope on the -X side relative to the first partial slope 1a, in other words, on the side away from the installation surface 9 in the height direction, is referred to as a "second partial slope 1b".

[0169] Cut along the V4-V4 line Fig.15 The schematic cross-sectional view of the slope 1 is shown with Figure 4 same.

[0170] Fig.16 It is a schematic representation of Fig.15 The state shown is a three-dimensional view of the state of the slope 1 when the boundary 50 is folded. Fig.16 The slope 1 of the present embodiment shown in the figure is a foldable structure. Therefore, although the length in the X direction (extending direction) is long, it does not cause the packaging material 7 (see Figure 1 ) is greatly enlarged and can be packed together with heavy objects 5.

[0171] Fig.17 Yes Fig.15 The slope 1 of the present embodiment shown is a schematic cross-sectional view when cut along the line V17-V17. Fig.17 As shown, the slope 1 of this embodiment has a connecting member 51 that connects the first partial slope 1a and the second partial slope 1b in a foldable manner.

[0172] Fig.18 is from Fig.17 A schematic diagram showing a state in which the first partial slope 1a and the second partial slope 1b are slightly bent at the location of the connecting member 51. Fig.19 is from Fig.18 A schematic diagram of a state in which the first partial slope 1a and the second partial slope 1b are further bent in the state in which the first partial slope 1a and the second partial slope 1b are overlapped.

[0173] The slope 1 of the present embodiment is provided with cutouts in the respective flat plate-shaped members 21 , 21 , . . . constituting the reinforcing member 20 . Fig. 20 yes Fig.17 The partially enlarged view is an enlarged view of the reinforcing member 20 of the first partial slope 1a, which is close to the second partial slope 1b. Fig.21 yes Fig.17The partially enlarged view is an enlarged view of the side of the reinforcing member 20 provided in the second partial slope 1b, which is close to the first partial slope 1a.

[0174] like Fig. 20 As shown in FIG. 1 , the reinforcing member 20 provided in the first partial slope 1a has a cutout 53 at a location located on the side of the adjacent second partial slope 1b. Fig.21 As shown, the reinforcing member 20 provided in the second partial slope 1b has a cutout 53 at a portion located on the adjacent first partial slope 1a side.

[0175] The connecting member 51 is configured to connect the cutouts 53 provided on the first partial slope 1a and the second partial slope 1b. Since the connecting member 51 is assumed to be bent as described above, it is preferred that the connecting member 51 has the property of being easy to bend and easy to return to the original state from the bent state. From this point of view, the connecting member 51 is made of paper, typically kraft paper.

[0176] The connection member 51 is bonded to the first housing 11 of each of the first and second partial slopes 1a and 1b. More specifically, the connection member 51 is bonded to the surface of the bottom plate portion 15 of the first housing 11 of each of the first and second partial slopes 1a and 1b.

[0177] Fig. 22 yes Fig.18 A partial enlarged view of the vicinity of the connecting member 51, Fig.23 yes Fig.17 A partial enlarged view of the vicinity of the connecting member 51.

[0178] exist Fig. 22 In the example shown, the top end of the first slide plate-like member 41 included in the first partial slope 1a on the second partial slope 1b side protrudes toward the second partial slope 1b side from the housing 10 (here, the second housing 12) included in the first partial slope 1a, thereby forming a protruding portion 55. On the contrary, the top end of the first slide plate-like member 41 included in the second partial slope 1b is retreated in a direction away from the first partial slope 1a from the housing 10 (here, the second housing 12) included in the second partial slope 1b. As a result, a retreat portion 56 is formed in a region sandwiched by the second slide plate-like member 42 included in the second partial slope 1b, the top end of the first slide plate-like member 41, and the housing 10 (here, the second housing 12).

[0179] In making ramp 1 from Fig.18 The state shown changes to Fig.17 When the status shown is Fig. 22 The protruding portion 55 shown is inserted into the receding portion 56. Fig.23As shown, the top end (protrusion 55) of the first sliding plate-like member 41 of the first partial slope 1a is sandwiched by the second sliding plate-like member 42 of the second partial slope 1b and the shell 10 (second shell 12) in the vertical direction (Z direction), thereby playing the role of locking the partial slopes (1a, 1b) on both sides.

[0180] Furthermore, when each of the partial slopes (1a, 1b) is extended in the X direction, the boundary 50 between the two partial slopes (1a, 1b) can be offset in the X direction (see Fig.23 ). Thus, even when the weight 5 passes near the boundary 50 between the two slopes ( 1 a , 1 b ), the slope 1 is not easily deformed near the boundary 50 .

[0181] like Fig. 22 As shown in FIG. 1 , in the slope 1 of this embodiment, the upper end corner of the reinforcing member 20 of the second slope 1b on the first slope 1a side is chamfered (chamfered portion 54). As a result, when the protruding portion 55 is inserted into the receding portion 56, the protruding portion 55 is less likely to contact the reinforcing member 20 of the second slope 1b. Fig.19 The folded state shown in the ramp 1 is transformed to Fig.17 The ramp 1 in the extended state shown facilitates handling.

[0182] In addition, in this embodiment, as shown in FIG. Fig.12 As described above, each partial slope ( 1 a , 1 b ) may be configured to include a single sliding plate-shaped member 40 .

[0183] [Third Embodiment]

[0184] The third embodiment of the ramp 1 will be described mainly with respect to the parts that are different from the above-mentioned embodiments. Fig.15 Similarly, the folded stereogram is Fig.16 same.

[0185] The slope 1 of this embodiment is different from the slope 1 of the second embodiment in that the partial slopes (1a, 1b) are bent in different directions. That is, the slope 1 of the second embodiment is bent by bending the partial slopes (1a, 1b) toward the installation surface 9 ( Fig.17 In contrast, the slope 1 of the present embodiment is formed by bending a portion of the slope (1a, 1b) toward the inclined surface 2 ( Fig.24 The structure is a structure that is bent and folded by bending (+Z side) inside.

[0186] Fig.24 The slope 1 of this embodiment is Fig.15 A schematic cross-sectional view taken along the V17-V17 line. Fig.25 is from Fig.24 A schematic diagram showing a state in which the first partial slope 1a and the second partial slope 1b are slightly bent at the location of the connecting member 51. Fig.26 is from Fig.25 A schematic diagram of a state in which the first partial slope 1a and the second partial slope 1b are further bent in the state in which the first partial slope 1a and the second partial slope 1b are overlapped.

[0187] The slope 1 of this embodiment is different from the second embodiment in that a notch is provided in a sliding plate-like member 40 . Fig. 27 yes Fig.24 2 is a partially enlarged view of the first partial slope 1a, in which the end portion of the first partial slope 1a on the second partial slope 1b side is enlarged. Fig.28 yes Fig.24 The partial enlarged view of the second slope 1b is enlarged at the end of the first slope 1a. Figure 27-28 In the figures, the connecting member 51 is omitted.

[0188] like Fig. 27 As shown in FIG. 1 , the slide plate-shaped member 40 (more specifically, the second slide plate-shaped member 42 ) provided in the first partial slope 1 a has a cutout 57 at a portion located on the adjacent second partial slope 1 b side. Fig.28 As shown, the slide plate-shaped member 40 (more specifically, the second slide plate-shaped member 42 ) provided in the second partial slope 1 b has a cutout 57 at a portion located on the adjacent first partial slope 1 a side.

[0189] In the slope 1 of this embodiment, the connection member 51 is arranged to connect the cutouts 57 provided in the first and second partial slopes 1a and 1b. More specifically, the connection member 51 is bonded to the upper surface of the first sliding plate-like member 41 provided in the first and second partial slopes 1a and 1b.

[0190] also, Figure 27-28 The protruding portion 55 , the receding portion 56 , and the chamfered portion 54 shown in the figure are the same as those of the second embodiment.

[0191] That is, when making the slope 1 from Fig.25 The state shown changes to Fig.24 When the status shown is Fig. 27 The protrusion 55 shown is inserted into Fig.28 The back portion 56 shown (however, it should be noted that, as described above, Figure 27-28 The illustration of the connecting member 51 is omitted). Thus, Fig.29As shown, the top end (protrusion 55) of the first sliding plate-like member 41 of the first partial slope 1a is sandwiched by the second sliding plate-like member 42 of the second partial slope 1b and the shell 10 (second shell 12) in the vertical direction (Z direction), thereby playing the role of locking the partial slopes (1a, 1b) on both sides.

[0192] Furthermore, when each of the partial slopes (1a, 1b) is extended in the X direction, the boundary 50 between the two partial slopes (1a, 1b) can be offset in the X direction (see Fig.23 ). Thus, even when the weight 5 passes near the boundary 50 between the two slopes ( 1 a , 1 b ), the slope 1 is not easily deformed near the boundary 50 .

[0193] As described above, according to the slope 1 of the present embodiment, the slope 1 can be folded toward the inclined surface 2 via the connecting member 51 .

[0194] In addition, in the above-mentioned structure, a cutout 57 is provided in the vertical direction in order to arrange the connecting member 51 in a part of the second slide plate-like member 42. Considering the amount corresponding to the thickness of the cutout, the thickness (length in the Z direction) of the second slide plate-like member 42 may be thicker than that of the first slide plate-like member 41.

[0195] (Variation)

[0196] In the above description, the connecting member 51 is arranged on the upper surface of the first sliding plate-shaped member 41. Figure 30 to Figure 32 As shown, the connection member 51 may be disposed on the upper surface of the second sliding plate-shaped member 42 . Figure 30 to Figure 32 It is modeled after Figure 24 to Figure 26 The diagrams respectively show the slope 1 of this other structural example.

[0197] exist Figure 30 to Figure 32 The slope 1 shown is also related to Figure 24 to Figure 26 Similarly, the slope 1 shown in the figure is formed by connecting the part of the slope (1a, 1b) to the inclined surface 2 side ( Fig.24 The inner +Z side) is bent and folded.

[0198] In the case of this structure, Fig.30 In the ramp 1 shown in the state, the connecting member 51 is located at the position where the caster 6 (refer to Figure 1The uppermost surface of the inclined surface 2 through which the connecting member 51 passes (such as the uppermost surface of the inclined surface 2 through which the connecting member 51 passes). However, as described above, the connecting member 51 is made of a bendable material (typically kraft paper, etc.), which is a softer material than the sliding plate-like member 40 made of paper tube base paper, etc. Therefore, when the caster 6 attached to the weight 5 passes through the upper surface of the connecting member 51, the connecting member 51 is compressed in the vertical direction due to the load of the weight 5, and the thickness is reduced. Therefore, it is believed that when the caster 6 is slid, the influence of the height difference accompanying the thickness of the connecting member 51 is almost not generated.

[0199] [Fourth Embodiment]

[0200] The fourth embodiment of the ramp 1 will be described mainly focusing on the parts that are different from the above-mentioned embodiments.

[0201] The slope 1 of this embodiment is different from the slope 1 of the second to third embodiments in the number of divisions of the partial slope. Hereinafter, they are referred to as "the first partial slope 1a", "the second partial slope 1b", and "the third partial slope 1c" in order from the side close to the installation surface 9. That is, the slope 1 of this embodiment has the first partial slope 1a, the second partial slope 1b, and the third partial slope 1c, and the boundary between the first partial slope 1a and the second partial slope 1b and the boundary between the second partial slope 1b and the third partial slope 1c are respectively foldable via the connecting member 51.

[0202] Fig.33 It is modeled after Fig.15 A schematic perspective view showing the structure of the ramp 1 according to the present embodiment. Fig.33 The slope 1 shown is substantially the same as the slope 1 shown in FIG. 1 except that the number of edges 50 increases from 1 to 2 and the number of partial slopes increases from 2 to 3. Fig.15 Same. In addition, cut with V4-V4 line Fig.33 The schematic cross-sectional view of the slope 1 is shown with Figure 4 same.

[0203] Fig.34 Yes Fig.33 The slope 1 of the present embodiment shown is a schematic cross-sectional view when it is cut along the line V34-V34. Fig.35 is from Fig.34 This is a schematic diagram of a state in which each partial slope ( 1 a , 1 b , 1 c ) is slightly bent at the location of the connecting member 51 . Fig.35 is from Fig.34 Specifically, it is a schematic diagram when the slope 1 is bent until the first partial slope 1a overlaps with the second partial slope 1b, and the second partial slope 1b overlaps with the third partial slope 1c.

[0204] Fig.37 yes Fig.34 The partially enlarged view is an enlarged view of the vicinity of the connecting member 51 connecting the first partial slope 1a and the second partial slope 1b. Fig.38 yes Fig.34 The partially enlarged view is an enlarged view of the vicinity of the connecting member 51 connecting the second partial slope 1b and the third partial slope 1c.

[0205] Fig.39 yes Fig.35 The partially enlarged view is an enlarged view of the vicinity of the connecting member 51 connecting the first partial slope 1a and the second partial slope 1b. Fig.40 yes Fig.35 The partially enlarged view is an enlarged view of the vicinity of the connecting member 51 connecting the second partial slope 1b and the third partial slope 1c.

[0206] Figures 33 to 40 The arrangement position of the connection member 51 provided in the slope 1 of the present embodiment shown in the figure is similar to that of the reference Figures 17 to 23 The arrangement position of the connection member 51 of the slope 1 of the second embodiment is substantially the same. Therefore, according to the slope 1 of this embodiment, the boundary 50 between the first and second slopes 1a and 1b, and the boundary 50 between the second and third slopes 1b and 1c can be folded toward the installation surface 9 side (the bottom plate 15 side of the first housing 11) (see FIG. Fig.36 ). As a result, compared with the slope 1 of the second to third embodiments, a slope 1 longer in the extending direction (X direction) can be realized.

[0207] Figures 33 to 40 The slope 1 of the illustrated embodiment is a structure in which the boundary 50 between the first partial slope 1a and the second partial slope 1b, and the boundary 50 between the second partial slope 1b and the third partial slope 1c are both folded toward the bottom plate portion 15 side (the installation surface 9 side) of the first housing 11. However, by applying the structure of the slope 1 described above in the third embodiment, it is also possible to fold toward the inclined surface 2 side.

[0208] Fig.41 Yes Fig.33 The slope 1 of another structure of the present embodiment shown is a schematic cross-sectional view when it is cut along the line V34-V34. Fig.42 is from Fig.41 This is a schematic diagram of a state in which each partial slope ( 1 a , 1 b , 1 c ) is slightly bent at the location of the connecting member 51 . Fig.43 is from Fig.42 Specifically, this is a schematic diagram of a state in which the slope 1 is further bent until each partial slope (1a, 1b, 1c) overlaps.

[0209] Fig.44 yes Fig.41 The partially enlarged view is an enlarged view of the vicinity of the connecting member 51 connecting the first partial slope 1a and the second partial slope 1b. Fig.41 In the ramp 1 shown in FIG. 1 , the vicinity of the connecting member 51 connecting the second ramp 1b and the third ramp 1c is enlarged. Fig.38 same.

[0210] That is, in Figure 41 to Figure 44 In the slope 1 shown in FIG. 1 , the arrangement position of the connecting member 51 connecting the first slope portion 1a and the second slope portion 1b is similar to that of the reference Figure 24 to Figure 29 The arrangement position of the connection member 51 of the slope 1 of the third embodiment is substantially the same. Figure 41 to Figure 44 In the slope 1 shown in FIG. 1 , the arrangement position of the connecting member 51 connecting the second slope portion 1b and the third slope portion 1c is similar to that of the reference Figures 17 to 23 The arrangement positions of the connection members 51 included in the ramp 1 of the second embodiment described above are substantially the same.

[0211] Therefore, according to the slope 1 of this embodiment, the slope 1 can be folded toward the inclined surface 2 side (the sliding plate-like member 40 side) at the boundary 50 between the first and second slopes 1a and 1b, and can be folded toward the installation surface 9 side (the bottom plate portion 15 side of the first housing 11) at the boundary 50 between the second and third slopes 1b and 1c. Fig.43 As shown, each slope portion (1a, 1b, 1c) can be folded in a state where it overlaps with each other in one direction. Fig.36 Compared to the ramp 1 shown, it can be folded more compactly.

[0212] In addition, by applying Figure 40 to Figure 43 The structure shown can also divide the slope 1 into four or more partial slopes. Specifically, the slope 1 formed in the following manner can be divided into four or more partial slopes: the area where adjacent partial slopes are connected to each other by the connecting member 51 provided on the installation surface 9 side (the bottom plate portion 15 side of the first shell 11) and the area where adjacent partial slopes are connected to each other by the connecting member 51 provided on the inclined surface 2 side (the sliding plate-like member 40 side) are alternately repeated.

[0213] In addition, the arrangement position of the connecting member 51 connecting the first partial slope 1a and the second partial slope 1b may be different from the reference Figure 30 to Figure 32 The arrangement position of the connection member 51 provided in the slope 1 of the third embodiment described above is the same. That is, the first partial slope 1a and the second partial slope 1b may be connected by the connection member 51 arranged on the upper surface of the second slide plate-shaped member 42.

[0214] Fig.45 Yes Fig.33 The slope 1 of another structure of the present embodiment shown is a schematic cross-sectional view when it is cut along the line V34-V34. Fig.46 is from Fig.45 This is a schematic diagram of a state in which each partial slope ( 1 a , 1 b , 1 c ) is slightly bent at the location of the connecting member 51 . Fig.47 is from Fig.46 Specifically, this is a schematic diagram of a state in which the slope 1 is further bent until each partial slope (1a, 1b, 1c) overlaps.

[0215] Fig.48 yes Fig.45 The partially enlarged view is an enlarged view of the vicinity of the connecting member 51 connecting the first partial slope 1a and the second partial slope 1b. Fig.45 In the ramp 1 shown in FIG. 1 , the vicinity of the connecting member 51 connecting the second ramp 1b and the third ramp 1c is enlarged. Fig.38 same.

[0216] It should be noted that in Figures 41 to 48 In the example shown, the connecting member 51 connecting the first partial slope 1a and the second partial slope 1b adjacent thereto located closest to the +X side is bent toward the inclined surface 2, and the connecting member 51 connecting the second partial slope 1b and the third partial slope 1c is bent toward the installation surface 9, but the bending directions may be opposite. That is, the connecting member 51 connecting the first partial slope 1a and the second partial slope 1b may be bent toward the installation surface 9, and the connecting member 51 connecting the second partial slope 1b and the third partial slope 1c may be bent toward the inclined surface 2.

[0217] [Other embodiments]

[0218] Other embodiments will be described below.

[0219] <1> In the above-described respective embodiments, the ramp 1 may not have the guide member 71 .

[0220] <2> In reference Figure 5-6 In the above embodiment, the second housing 12 with the bottom plate 15 located on the inclined surface 2 side surrounds the first housing 11 located on the installation surface 9 side from the outside, thereby forming the internal space 17. Fig.49 As shown, the first housing 11 whose bottom plate 15 is located on the installation surface 9 side may surround the second housing 12 whose bottom plate 15 is located on the inclined surface 2 side, thereby forming the internal space 17 .

[0221] However, in this case, Figure 5-6 Compared with the above-mentioned structure, the number of manufacturing steps of the slope 1 may increase slightly. Specifically, for example, the following steps are adopted. First, prepare the second shell 12 in an upside-down state with the bottom plate portion 15 located on the vertical upper side (the inclined surface 2 side). Next, a plurality of flat plate-shaped members 21, 21, ... are stacked and arranged in a manner to fill the internal space 17 surrounded by the bottom plate portion 15 and a pair of side wall portions 16 of the second shell 12. Next, the first shell 11 is arranged from the vertical upper side in a manner to surround the outer side of the second shell 12. Thereafter, the upper and lower parts are switched so that the bottom plate portion 15 of the first shell 11 is at the vertical lower side.

[0222] <3> The present invention is not limited to the above-mentioned embodiments, and includes various modifications. For example, the above-mentioned embodiments are the modes described in detail for a better understanding of the present invention, and are not necessarily limited to the structures having all the described structures. The scope of the present invention is represented by the scope claimed, and it is intended to include all changes within the meaning and scope equivalent to the scope claimed.

[0223] Description of Reference Numerals

[0224] 1: Slope;

[0225] 1a: first part of the slope;

[0226] 1b: Second part of the slope;

[0227] 1c: third section of slope;

[0228] 2: Inclined surface;

[0229] 5: Heavy objects;

[0230] 6: Casters;

[0231] 7: Packaging materials;

[0232] 9: Set the surface;

[0233] 10: Shell;

[0234] 11: first housing;

[0235] 12: second housing;

[0236] 15, 15a, 15b: bottom plate;

[0237] 16, 16a, 16b: side wall portion;

[0238] 17: Internal space;

[0239] 20: Reinforcement member;

[0240] 21: Flat plate-like member;

[0241] 24: Liner;

[0242] 25: SMIC;

[0243] 25a: top of the core;

[0244] 40: Plate-like member for sliding;

[0245] 41: a first sliding plate-shaped member;

[0246] 41a: a top end portion of the first sliding plate-shaped member;

[0247] 42: a second sliding plate-shaped member;

[0248] 43: Free space;

[0249] 50: Boundary;

[0250] 51: Connecting member;

[0251] 53: incision;

[0252] 54: chamfered portion;

[0253] 55: protrusion;

[0254] 56: Rear part;

[0255] 57: incision;

[0256] 71: Guide member.

Claims

1. A slope, characterized in that: have: A shell made of corrugated cardboard, comprising: a bottom plate portion extending in a first direction; and a pair of side walls extending in the first direction, connected to the bottom plate portion and facing each other, and having a height that decreases as it advances in the first direction, wherein a cross section of the shell orthogonal to the first direction is in a channel shape; and The reinforcing member is formed by filling a plurality of flat plate-shaped members made of corrugated cardboard in a state of being stacked without being bonded to each other into the internal space surrounded by the shell, The plurality of flat plate-shaped members are filled in the housing in an orientation such that the corrugated direction of the core is substantially parallel to the surface of the side wall portion.

2. The ramp according to claim 1, characterized in that The housing is configured to include a first housing in which the bottom plate is arranged on the installation surface side and a second housing in which the bottom plate is arranged vertically above the installation surface, and the housing is arranged in a manner such that one of the first housing and the second housing surrounds the other. The reinforcing member is formed by filling the plurality of flat plate-shaped members in the internal space surrounded by the bottom plate portion of the first housing, the bottom plate portion of the second housing, and the side wall portions of the first housing and the second housing.

3. The ramp according to claim 2, characterized in that The slope includes a sliding plate-like member that is arranged on the upper surface of the bottom plate portion of the second housing in a state extending in the first direction and is made of paper that is harder than the housing.

4. The ramp according to claim 3, characterized in that The sliding plate-shaped member is made of paper tube base paper.

5. The ramp according to claim 3, characterized in that A tip end of the sliding plate-shaped member in the first direction protrudes forward more than a tip end of the housing in the first direction.

6. The ramp according to claim 2, characterized in that The slope is divided into a plurality of partial slopes in the first direction, The plurality of partial slopes respectively include the shell and the reinforcing member, The bottom plate portions of the housing included in the adjacent pair of partial slopes and adjacent in the first direction are connected to each other by a connecting member. A pair of adjacent partial slopes are foldable via the connecting member.

7. The ramp according to claim 6, characterized in that The plurality of partial slopes each have a sliding plate-like member, which is arranged on the upper surface of the bottom plate portion of the first shell in a state extending in the first direction and is made of paper harder than the shell. The top end of the sliding plate-like member included in the first partial slope, one of the adjacent pair of partial slopes, protrudes in the first direction toward the second partial slope, the other of the adjacent pair of partial slopes, from the shell included in the first partial slope, thereby forming a protruding portion. The top end of the sliding plate-shaped member included in the second partial slope retreats in the first direction in a direction farther away from the first partial slope than the shell included in the second partial slope, thereby forming a retreat portion in a region sandwiched between the top end of the sliding plate-shaped member included in the second partial slope and the shell. When the first partial slope and the second partial slope are transformed from a folded state to a state where both are adjacent to each other in the first direction via the connecting member, the protruding portion formed on the first partial slope is located inside the receding portion formed on the second partial slope.

8. The ramp according to claim 7, characterized in that The sliding plate-like member includes a first sliding plate-like member in contact with the upper surface of the bottom plate portion of the second housing and a second sliding plate-like member in contact with the upper surface of the first sliding plate-like member. The protrusion is formed by causing the tip of the first sliding plate-shaped member included in the first partial slope to protrude toward the second partial slope. The retreat portion is formed in a region sandwiched by the second sliding plate-like member included in the second partial slope, the top end of the first sliding plate-like member, and the shell by retreating the top end of the first sliding plate-like member included in the second partial slope in a direction farther away from the first partial slope than the shell. When the first partial slope and the second partial slope are transformed from a folded state to a state where both are adjacent to each other in the first direction via the connecting member, the protruding portion formed on the first partial slope is inserted into the receding portion formed on the second partial slope.

9. The ramp according to claim 7 or 8, characterized in that The corners of each of the plurality of flat plate-shaped members constituting the reinforcing member included in the second partial slope are chamfered at positions corresponding to the vertically lower side of the receding portion.

10. The ramp according to any one of claims 1 to 8, characterized in that: The slope includes a guide member that covers one or both of the side wall portions of the housing from the outside, has a shape that protrudes vertically upward from the side wall portion, and is disposed to extend in the first direction.

11. A method for utilizing a slope, the method for utilizing a slope according to any one of claims 1 to 8, characterized in that: A plurality of the slopes extending in the first direction are prepared and arranged on the installation surface to be separated from each other. On each of the inclined surfaces formed by the bottom plate portions of the plurality of slopes or by a surface parallel to the bottom plate portions, casters provided on the transported object slide in a descending direction from a side having a higher vertical height position toward the installation surface side.

12. The method for utilizing a slope according to claim 11, characterized in that: A guide member is provided, the guide member covers one or both of the side wall portions of the housing from the outside, has a shape protruding vertically upward from the side wall portion, is erected, and is extended along the first direction. The caster is caused to slide on each of the inclined surfaces provided on the plurality of slopes so as not to go beyond the outer side of the guide member.

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