JP2006298468A - Folding container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a folding container having a structure folded under the state in which two side plates are being overlapped with each other to enable the side plates folded in advance to be turned smoothly and raised up to their assembled position. <P>SOLUTION: Both a hinge pin and guide pin are protruded at the lower end of a side plate (a long-side side plate 13), and a side plate pivoting protrusion piece vertically arranged at a bottom plate is provided with a hinge guide groove for use in guiding the hinge pin and a slant guide surface for restricting a motion of the guide pin toward an inside part of a container. A space in a horizontal direction between the container outside guide surface and the slant guide surface of the hinge guide groove is formed in such a way that it is gradually widened from a lower side toward an upper side. When the long-side side plate 13 is raised, the hinge pin is guided by the hinge guide groove and at the same time the guide pin is guided by the slant guide surface, thereby the long-side side plate 13 is turned smoothly and becomes an upright state. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a folding container, and more particularly to a folding container having a structure in which opposing side plates are folded in a state of being superimposed on an upper surface of a bottom plate.

There are various folding methods for the side plate of the folding container depending on the size of the container and the size of the side plate with respect to the size of the bottom plate, and in the case of a container that folds the side plate along the top surface of the bottom plate, When the side plate has a large height dimension, the pair of side plates facing each other is folded in a state of being overlapped with the upper surface of the bottom plate (see, for example, Patent Document 1).
JP 2003-285834 A

  In the case of a container that folds so that two side plates overlap each other on the top surface of the bottom plate, the inner surface of the side plate folded first is aligned with the upper surface of the bottom plate, and the inner surface of the side plate folded later is folded first. It becomes a state along the outer surface of the side plate. At this time, when the position of the pivoting portion between the bottom plate and the side plate is fixed, the folding order of the side plates is limited, or the end of the side plate folded from behind without being able to overlap the two side plates May be raised. For this reason, the pivoting portion of the bottom plate and the side plate is formed so as to be movable in the vertical direction so that the two side plates can be overlapped in a state substantially parallel to the top surface of the bottom plate regardless of which of the two side plates is folded first. There is a need to.

  However, when the pivoting portion of the bottom plate and the side plate is formed so as to be movable in the vertical direction, the pivoting portion of the side plate folded first is in a state of being positioned below, so when raising this side plate to the assembly position, It is necessary to rotate the side plate after lifting the side of the side plate on the axis, and if you simply rotate the side plate by holding the upper end, an excessive force will act on the axis and the There was a risk of damage to the periphery.

  Accordingly, the present invention provides a folding container having a structure in which two side plates are folded in a state of being overlapped on the upper surface of the bottom plate, and a folding container that can be smoothly turned up to rise to an assembly position. It is intended to provide.

  In order to achieve the above object, a folding container according to the present invention includes a rectangular bottom plate and a pair of side plates pivotally attached to side plate shaft wearing protrusions respectively erected on a pair of opposite side edges of the bottom plate. Assembly position in a state where both side plates are upright with respect to the bottom plate at the upper part of the side plate shaft wearing protrusion, and a folding position in a state along the upper surface of the bottom plate on the container inner side of the side plate shaft wearing protrusion In the folding container which is formed so as to be pivotable and is folded in a state where the other side plate is overlapped on the one side plate which has been previously rotated to the folding position, the side plate has a protruding end protruding from the lower end of the side plate. A hinge part projecting a hinge pin in a direction parallel to the container side edge, and a guide part projecting a guide pin in a direction parallel to the container side edge below and inside the hinge pin at the projecting end projecting from the lower end of the side plate Setting The side plate shaft wearing protrusion has a hinge guide groove at a position corresponding to the hinge portion for guiding the hinge pin so that the hinge pin can be moved in the container height direction and rotatable. An inclined guide surface that regulates the movement of the guide pin in the container inner direction is provided at a position corresponding to the guide pin from the lower outer portion of the side plate shaft wearing protrusion at a position corresponding to the guide pin. It is provided in an inclined state toward the inner upper part of the container, and the horizontal distance between the inclined guide surface and the container outer guide surface of the hinge guide groove is formed so as to gradually increase from the lower side to the upper side. It is said.

  Further, the folding container of the present invention is provided with a restricting portion for restricting the highest rising position of the hinge pin at the upper end portion of the hinge guide groove, and the guide pin and the inclined guide surface have a side plate folded so that the hinge pin is When the hinge pin is lowered to the lower end of the hinge guide groove, it is in a non-contact state. When the hinge pin is raised to the highest position, the movement restriction of the guide pin is released and the side plate can be turned to the assembly position. It is characterized by.

  According to the folding container of the present invention, the side plate can be smoothly rotated by the guide of the hinge pin by the hinge guide groove and the movement restriction of the guide pin by the inclined guide surface, and can be raised to the assembly position.

  FIG. 1 shows an example of a folding container according to the present invention. FIG. 1 is a longitudinal sectional view of a main part showing a state in which the side plate of the folding container is folded, and FIG. 2 is a diagram showing the upper end of the side plate lifted from the state shown in FIG. 3 is a vertical cross-sectional view of the main part showing the state, FIG. 3 is a vertical cross-sectional view of the main part showing the state where the upper end of the side plate is further lifted from the state shown in FIG. 2, and FIG. FIG. 5 is an assembly position in which the upper end of the side plate is further lifted and rotated from the state shown in FIG. 4 so that the side plate stands upright with respect to the bottom plate. FIG. 6 is a perspective view showing a folded container in an assembled state, FIG. 7 shows a folded container in a folded state, and a perspective view in which a side plate that is folded later is omitted, FIG. Is the container of the hinge guide groove It is an explanatory diagram showing a relationship between an outer guide surface and the inclined guide surface.

  First, as shown in FIGS. 6 and 7, the folding container shown in this embodiment includes a rectangular bottom plate 11 and a pair of short side plates that are pivotally attached to the short side edges of the bottom plate 11. 12 and a pair of long-side side plates 13 each pivotally attached to a long-side protruding piece 11a on the side plate shaft that is erected from the long-side side edge of the bottom plate 11. The length of the long side plate 13 is slightly shorter than the length of the short side of the bottom plate, and when folded, the other side plate 13 is placed on the other long side plate 13 that has been first rotated to the folding position. The long side plate 13 is folded in an overlapping state.

  As shown in FIG. 6, the folding container is configured such that after the side plates 12 and 13 are brought into an assembly position in which the side plates 12 and 13 are respectively upright with respect to the bottom plate 11, By tilting the side-side plates 13 one by one into the container, the side-side plates 13 can be folded as shown in FIG. In addition, after the long side plate 13 is rotated one by one from the folded state shown in FIG. 7 to stand upright, the short side plate 12 is raised between the long side plate 13 to stand upright. The assembled state shown in FIG. 6 is obtained.

  Three hinge portions 14 and two guide portions 15 project from the lower end of the long side side plate 13, and each hinge portion 14 is provided on the side plate shaft wearing long side projection 11 a, respectively. There are provided three hinge receiving portions 16 to be engaged and two guide receiving portions 17 to which both guide portions 15 are engaged.

  A hinge pin 18 in a direction parallel to the container side edge protrudes from the protruding end of the hinge portion 14, and the hinge receiving portion 16 is a hinge that guides the hinge pin 18 so as to be movable and rotatable in the container height direction. A guide groove 19, an upper side restriction protrusion 20 that restricts the highest rising position of the hinge pin 18 at the upper end of the hinge guide groove 19, and an external side restriction protrusion 21 that positions the hinge pin 18 in the container inside / outside direction are provided. It has been. Further, the hinge guide groove 19 is provided in an inclined state so as to be directed from the container outer lower portion of the side plate shaft wearing long side protruding piece 11a toward the container inner upper portion, and slightly swelled toward the container inner side. It is formed in an arc shape (see FIG. 5).

  On the other hand, the guide portion 15 also has a guide pin 22 in a direction parallel to the container side edge at the projecting end, and the guide receiving portion 17 moves the guide pin 22 in the container inner direction. An inclined guide surface 23 to be regulated is provided. Like the hinge guide groove 19, the inclined guide surface 23 is provided in an inclined state from the container outer lower portion of the side plate shaft wearing long side protruding piece 11a toward the container inner upper portion, and the hinge pin 18 is most elevated. The guide pin 22 is formed at such a height that the movement restriction in the container inner direction can be released when the guide pin 22 is raised to the position.

  As shown in FIG. 5, the guide pin 22 is positioned slightly below and inside the hinge pin 18 in the assembled state in which the long side plate 13 is upright with respect to the bottom plate 11, and in the folded state, the guide pin 22 is in FIG. As shown in FIG. 2, the hinge pin 18 is provided slightly below and outside.

  Further, as shown in FIG. 8, the positional relationship between the container outer guide surface 19a of the hinge guide groove 19 and the inclined guide surface 23 is such that the horizontal distance L between the two gradually increases from the bottom to the top. It is formed to become.

  That is, when the hinge pin 18 is positioned at the lowermost end of the hinge guide groove 19, the abutment point Ph <b> 1 where the hinge pin 18 abuts on the container outer guide surface 19 a of the hinge guide groove 19, and the guide pin 22 is the inclined guide surface 23. The abutment point Ph2 where the hinge pin 18 abuts on the uppermost portion of the container outer guide surface 19a and the guide pin 22 abuts on the upper portion of the inclined guide surface 23 with respect to the horizontal distance La between the abutment point Pg1 and the abutment point Pg1. The horizontal distance Lb from the contact Pg2 is set so that La <Lb.

  Further, since the guide pin 22 is positioned slightly below the hinge pin 18 in the vertical direction, the horizontal direction of the straight line S1 passing through both contact points Ph1 and Pg1 when the hinge pin 18 is below the hinge guide groove 19 The angle β with respect to the horizontal direction of the straight line S2 passing through both contact points Ph2, Pg2 when the hinge pin 18 is above the hinge guide groove 19 with respect to the angle α to Accordingly, the straight line passing through each contact point gradually turns in the horizontal direction.

  By setting the positional relationship between the hinge pin 18 and the guide pin 22 and the positional relationship between the container outer guide surface 19a and the inclined guide surface 23 as described above, the long side plate 13 is in the upright state from the folded state. The long side plate 13 is rotated about the hinge pin 18, the contact point between the hinge pin 18 and the container outer guide surface 19 a, and the contact point between the guide pin 22 and the inclined guide surface 23. However, as described above, the distance between both surfaces is gradually increased, that is, moved upward. In addition, when both contact points gradually rotate in the horizontal direction, the long side plate 13 is rotated in the upright direction. Therefore, when the folded long side plate 13 is rotated, the hinge pin 18 is guided by the container outer guide surface 19a, and the guide pin 22 is guided by the inclined guide surface 23, so that the hinge pin 18 has a hinge guide groove. It will rotate while moving upward in 19.

  The folding container formed in this manner is folded from the assembled state in the same manner as in the prior art, after the short side plate 12 is tilted inward of the container, and then the long side plate 13 is tilted inward of the container one by one. Can be done. In this folded state, the long side plate 13 that is folded first when folded is in a state of being rotated to a position parallel to the bottom plate 11, and the hinge pin 18 at this time is as shown in FIG. The guide pin 22 is positioned at the lower end of the inclined guide surface 23 as shown in FIG. 1B, and the guide pin 22 and the inclined guide surface. 23 is in a non-contact state with a slight gap between them.

  When the long side plate 13 that has been folded first is changed from the folded state to the assembled state in which the long side plate 13 is upright, when the upper end (rotation end) of the long side plate 13 is lifted to rotate the long side plate 13, As shown in FIG. 2 (a), the hinge pin 18 is positioned at the lowermost end of the hinge guide groove 19, and the guide pin 22 is positioned below the inclined guide surface 23 as shown in FIG. 2 (b). The guide pin 22 and the inclined guide surface 23 are brought into contact with each other and moved to the abutting position, and the movement of the guide pin 22 in the container inner direction is regulated by the inclined guide surface 23.

  When the upper end of the long side plate 13 is further lifted from the state shown in FIG. 2, the hinge pin 18 comes into contact with the container outer guide surface 19a of the hinge guide groove 19 to restrict the movement of the guide pin 22 toward the container outer side. The hinge pin 18 contacts the inclined guide surface 23 slightly below the position where the hinge pin 18 contacts the hinge guide groove 19, and the movement in the container inner direction is restricted. For this reason, the force to lift and rotate the upper end of the long side plate 13 causes the hinge pin 18 to extend along the hinge guide groove 19 and the guide pin 22 to extend along the inclined guide surface 23 as described above. Acts in the direction. Therefore, as the upper end of the long side plate 13 is lifted, the hinge pin 18 rises along the hinge guide groove 19 as shown in FIG. 3A, and the guide as shown in FIG. The pin 22 rises along the inclined guide surface 23, and the long side plate 13 moves upward while rotating in the direction of erecting gradually from the angle shown in FIG.

  Then, as shown in FIG. 4A, when the hinge pin 18 rises to the uppermost end of the hinge guide groove 19 and reaches the highest rise position, the upper side restriction projection 20 restricts the further rise, and the external side The movement in the container outer direction is restricted by the restriction protrusion 21. At this time, as shown in FIG. 4B, the guide pin 22 moves upward from the upper end of the inclined guide surface 23, and the restriction of movement of the guide pin 22 toward the container inside by the inclined guide surface 23 is released. It becomes a state.

  Therefore, when the upper end of the long side plate 13 is lifted in the state shown in FIG. 4, the hinge pin 18 is held and rotated at the position shown in FIG. 4A, and the guide pin 22 is inclined guide surface. Since the movement restriction by 23 is released, the upper part of the inclined guide surface 23 is moved in the container inner direction, and finally the hinge pin 18 is in the highest position as shown in FIG. Thus, as shown in FIG. 5B, the guide pins 22 move in the container inner direction, and the long side plate 13 is in an upright state with respect to the bottom plate 11.

  In this upright state, the lower end surface of the long side plate 13 is on the upper surface of the side plate wearing long side protrusion 11 a, so that the hinge pin 18 does not move downward along the hinge guide groove 19. The guide pin 22 does not move downward because the upper end of the inclined guide surface 23 is positioned below the guide pin 22. After both the long side plates 13 are upright, as described above, the short side plate 12 is raised between the long side plates 13 to stand up, and the assembled state shown in FIG. 6 is obtained.

  When the folding container is folded, on the long side plate 13 that is folded first, the hinge pin 18 moves in the reverse direction of FIGS. 1A to 5A, and the guide pin 22 moves outward in the container. Since the movement of the long side plate 13 is appropriately moved in the container outer direction by rotation about the hinge pin 18 of the long side plate 13 and the hinge pin 18 is lowered to the lowermost end of the hinge guide groove 19, The state shown in FIG.

  On the other hand, the long side plate 13 folded afterward is in a state of being overlaid on the long side plate 13 folded first, and the hinge pin 18 at this time is lowered to the uppermost end of the hinge guide groove 19 or slightly. On the other hand, the guide pin 22 rotates around the hinge pin 18 with the rotation of the long side plate 13 folded later, and moves near the inner surface of the side plate shaft wearing long side protrusion 11a. .

  As described above, when the long side plate 13 folded first is rotated to the assembly position by the interaction between the hinge pin 18 and the guide pin 22 and the hinge guide groove 19 and the inclined guide surface 23, the long side plate 13 is rotated. Therefore, it is not necessary to lift the lower end portion (the shaft-attached portion side), and the long side plate 13 can be smoothly rotated to rise to the assembly position.

  The hinge portion 14 and the guide portion 15 are preferably arranged adjacent to each other as close as possible. Further, the guide portion 15 does not need to be provided so as to correspond to all the hinge portions 14, and as shown in this embodiment, in the case where three hinge portions 14 are provided, the guide portions 15 are adjacent to the hinge portions on both sides. A guide portion can be provided, and the guide portion can be omitted from the central hinge portion.

It is a principal part longitudinal cross-sectional view which shows the state which folded the side plate of the folding container. It is a principal part longitudinal cross-sectional view which shows the state which lifted the upper end of the side plate from the state shown in FIG. It is a principal part longitudinal cross-sectional view which shows the state which raised the upper end of the side plate further from the state shown in FIG. FIG. 4 is a longitudinal sectional view of a main part showing a state where the upper end of the side plate is further lifted from the state shown in FIG. 3 and the hinge pin is raised to the highest position. FIG. 5 is a longitudinal sectional view of a main part showing a state where the upper end of the side plate is further lifted and rotated from the state shown in FIG. 4 and the side plate is set up in an upright position with respect to the bottom plate. It is a perspective view which shows the folding container of an assembly state. It is a partially omitted perspective view showing a folded container in a folded state. It is explanatory drawing which shows the relationship between the container outer side guide surface of a hinge guide groove, and an inclination guide surface.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Bottom plate, 11a ... Long side protrusion piece with side plate shaft, 12 ... Short side plate, 13 ... Long side plate, 14 ... Hinge part, 15 ... Guide part, 16 ... Hinge receiving part, 17 ... Guide receiving part , 18 ... Hinge pin, 19 ... Hinge guide groove, 20 ... Upper side regulation projection, 21 ... External side regulation projection, 22 ... Guide pin, 23 ... Inclined guide surface

Claims (2)

  A square bottom plate and a pair of side plates pivotally attached to side plate shaft wearing protrusions respectively erected on a pair of opposite side edges of the bottom plate, and both side plates of the side plate shaft wearing protrusions It is formed so as to be rotatable between an assembly position in an upright state with respect to the bottom plate at the top and a folding position in a state along the upper surface of the bottom plate on the container inner side of the side plate shaft wearing protrusion, In the folding container that is folded in a state where the other side plate is overlapped on the rotated one side plate, the side plate has a hinge projecting a hinge pin projecting from the lower end of the side plate in a direction parallel to the container side edge. And a guide part projecting a guide pin in a direction parallel to the container side edge below and inside the hinge pin at the projecting end projecting from the lower end of the side plate, and the hinge part on the side plate shaft projection Corresponding to In addition, a hinge guide groove that guides the hinge pin so as to be movable and rotatable in the container height direction is provided in an inclined state from the container outer lower part of the side plate shaft wearing protrusion to the container inner upper part, and the guide pin is provided on the guide pin. In a corresponding position, an inclined guide surface for restricting movement of the guide pin in the container inner direction is provided in an inclined state from the container outer lower portion of the side plate shaft wearing protrusion to the container inner upper portion, and the inclined guide surface and the aforementioned A folding container, wherein the horizontal distance between the hinge guide groove and the container outer guide surface is gradually increased from the bottom to the top.   The upper end portion of the hinge guide groove is provided with a restricting portion for restricting the highest rising position of the hinge pin, and the guide pin and the inclined guide surface are folded side plates so that the hinge pin is lowered to the lower end portion of the hinge guide groove. 2. The folding position according to claim 1, wherein the folding position is in a non-contact state, and when the hinge pin is raised to the highest position, the movement restriction of the guide pin is released and the side plate can be rotated to the assembly position. Folding container.

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