JP4852487B2 - Folding container - Google Patents

Description

  The present invention relates to a foldable folding container that includes a bottom portion and a side wall hinged to the bottom portion.

  Conventionally, as an example, a folding method in which a long side wall is hinged to an opposing long side bank portion having a low bottom and a short side wall is hinged to an opposing short side bank having a high bottom. To fold a container that is known and has a box shape, first fold down the long side wall so that it overlaps the bottom, and then put the short side wall on top of the long side wall that overlaps the bottom It is constructed so that it can be folded into a compact state with a low height, and the substantially horizontal short side wall of the folded container in the folded state is set up substantially vertically, The long side wall in a substantially horizontal state is configured to be in a box shape by standing substantially vertically.

  The components of the folding container described above are one bottom part, a pair of long side walls, and a pair of short side walls, and the assembly of the long side wall and the short side wall to the bottom part is a female disposed on the long side bank part of the bottom part. The hinge member and the male hinge member disposed on the long side wall are hingedly connected, and the short side wall is assembled to the bottom portion of the female hinge member disposed on the short side bank portion of the bottom portion. And a male hinge member disposed on the short side wall.

  A conventional folding container will be described with reference to FIGS.

  First, the overall configuration of the folding container of the present invention will be described with reference to FIGS.

  Reference numeral 1 denotes a bottom portion having a substantially rectangular planar shape, and the bottom portion 1 is formed on a bank portion 1a formed on the opposite long side (hereinafter, referred to as a long side bank portion) 1a and on the opposite short side. And the height of the short side bank portion 1b is formed higher than the height of the long side bank portion 1a. In addition, an appropriate number of female hinge members H1 to be described later are arranged at predetermined intervals on the short side bank portion 1b and the long side bank portion 1a.

  Reference numeral 2 denotes a long side wall. A male hinge member H2 described later corresponds to a female hinge member H1 disposed on the long side bank portion 1a of the bottom portion 1 on the back surface of the lower end horizontal flange 2a of the long side wall 2. Is arranged. Reference numeral 3 denotes a short side wall, and a male hinge member H2 to be described later corresponds to the female hinge member H1 disposed on the short side wall bank portion 1b of the bottom 1 on the back surface of the lower end horizontal flange 3a of the short side wall 3 as well. It is arranged.

  By connecting the male hinge member H2 disposed on the lower horizontal flange 2a of the long side wall 2 and the female hinge member H1 disposed on the long side bank portion 1a of the bottom portion 1, the long side wall 2 is connected to the bottom portion 1. By connecting the male hinge member H2 disposed on the lower horizontal flange 3a of the short side wall 3 and the female hinge member H1 disposed on the short side bank portion 1b of the bottom portion 1; The short side wall 3 is hinged to the bottom 1 to form a folding container.

  Next, the female hinge member H1 will be described using the female hinge member H1 disposed on the long side bank portion 1a of the bottom portion 1 as an example with reference to FIGS. The male hinge member H2 will be described by taking the male hinge member H2 disposed on the flange 2a as an example. The female hinge member H1 disposed on the short side bank portion 1b of the bottom portion 1 is substantially the same as the female hinge member H1 disposed on the long side side bank portion 1a of the bottom portion 1. Also, the male hinge member H2 disposed on the lower end horizontal flange 3a of the short side wall 3 is substantially the same as the male hinge member H2 disposed on the lower end horizontal flange 2a of the long side wall 2. Detailed description thereof will be omitted.

  The long side bank portion 1a of the bottom portion 1 includes an inner wall portion 1a1 extending substantially vertically upward from an edge portion of the bottom plate 1c of the bottom portion 1, and a horizontal portion 1a2 extending substantially horizontally outward from the upper end of the inner wall portion 1a1. And an outer wall portion 1a3 extending downward from the edge of the horizontal portion 1a2 to the vicinity of the bottom plate 1c, and a cross-sectional shape perpendicular to the longitudinal direction is formed in a substantially inverted U shape. The horizontal portion 1a2 of the long side bank portion 1a is formed with a vertical hole 1d having a rectangular planar shape, and the inner wall portion 1a1 of the long side bank portion 1a communicates with the vertical hole 1d. In addition, a rectangular cutout recess 1e extending in the direction of the bottom plate 1c is formed. The width (length along the longitudinal direction of the long side bank portion 1a) W1 of the notch recess 1e is the long side length (length along the longitudinal direction of the long side bank portion 1a) W2 of the vertical hole 1d. The shorter and notched recess 1e is located at the approximate center of the long side of the vertical hole 1d. A hook 1f is projected from the upper end of the inner surface of the inner wall 1a1 located on both sides of the notch recess 1e (the surface located on the outer wall 1a3 side). A female hinge member H1 is constituted by the vertical hole 1d, the notch recess 1e, and the hook 1f formed in the long side bank portion 1a.

  On the other hand, on the back surface of the lower end horizontal flange 2a perpendicular to the plate-like portion 2b of the long side wall 2, a pair of plate-like supports are provided at a predetermined interval and perpendicular to the longitudinal direction of the lower end horizontal flange 2a. The piece 2c is suspended, and the pair of support pieces 2c are connected by a connecting piece 2d. The width W3 in the direction perpendicular to the plate-like portion 2b of the support piece 2c is slightly smaller than the short-side length W4 of the vertical hole 1d formed in the horizontal portion 1a2 constituting the long side bank portion 1a of the bottom portion 1, It is formed long.

  A hinge block 2e protrudes perpendicularly to the outer surface at the lower part of the outer surface of the pair of support pieces 2c described above (the surface opposite to the surface opposite to the pair of support pieces 2c). A surface (hereinafter referred to as an upper surface) 2e1 facing the lower end horizontal flange 2a of the hinge block 2e is formed as a flat surface substantially parallel to the lower end horizontal flange 2a, and the plate-like portion 2b side of the upper surface 2e1. A substantially rectangular parallelepiped contact block portion 2e2 is projected from the end portion located at.

  The end surface 2e3 on the plate-like portion 2b side of the hinge block 2e is configured to be substantially flush with the vertical end surface 2c1 located on the inner surface 2b1 side of the plate-like portion 2b of the support piece 2c. The width in the direction perpendicular to the lower horizontal flange 2a of the hinge block 2e (height from the bottom surface 2e4 of the hinge block 2e to the top surface of the contact block portion 2e2) W5 is the outer wall portion of the long side bank portion 1a of the bottom portion 1 It is formed wider than the gap W6 between 1a3 and the tip of the hook 1f protruding from the inner surface of the inner wall 1a1. The pair of supporting pieces 2c, the connecting piece 2d, and the hinge block 2e constitute a male hinge member H2.

  In order to hinge-connect the bottom 1 and the long side wall 2, as shown in FIG. 10, the long side wall 2 is arranged in a substantially horizontal state so as to be substantially parallel to the bottom 1, and then the state is maintained. The long side wall 2 is lowered toward the bottom 1 while maintaining the above, and the hinge block 2e is inserted into the vertical hole 1d formed in the long side bank portion 1a of the bottom 1 and formed on the long side wall 2. When the support piece 2c on which the hinge block 2e is projected is inserted into a notch recess 1e formed in the long side bank portion 1a, a width W5 in a direction perpendicular to the lower end horizontal flange 2a of the hinge block 2e Is formed wider than the gap W6 between the outer wall portion 1a3 of the long side bank portion 1a of the bottom portion 1 and the tip of the hook 1f protruding from the inner surface of the inner wall portion 1a1, and the hinge block 2e is As shown in FIG. 11, the hook It will be placed on the upper inclined surface 1f1 of f. Thereafter, when the long side wall 2 is further lowered toward the bottom 1 while the long side wall 2 and the bottom portion 1 are maintained in a substantially horizontal state, the hinge block 2e is moved to the long side bank portion 1a. The inner wall portion 1a1 and / or the outer wall portion 1a3 is curved and deformed to form a gap between the outer wall portion 1a3 of the long side bank portion 1a formed on the bottom portion 1 and the hook 1f protruding from the inner surface of the inner wall portion 1a1. As shown in FIG. 12, the hinge block 2e passes between the outer wall portion 1a3 of the long side bank portion 1a and the hook 1f protruding from the inner surface of the inner wall portion 1a1. It will be arrange | positioned between the outer wall part 1a3 of the long side bank part 1a formed in the bottom part 1, and the inner wall part 1a1. Then, after the hinge block 2e passes between the outer wall 1a3 of the long side bank portion 1a and the hook 1f protruding from the inner surface of the inner wall portion 1a1, the inner wall portion 1a1 of the long side bank portion 1a or / And outer wall part 1a3 will return to an original state with the elastic restoring force. In this way, the female hinge member H1 disposed on the long side bank portion 1a of the bottom portion 1 and the male hinge member H2 disposed on the long side wall 2 are hinge-connected. Since the hinge connection between the female hinge member H1 disposed on the short side bank portion 1b of the bottom portion 1 and the male hinge member H2 disposed on the short side wall 3 is the same, the description thereof is omitted.

  As shown in FIG. 12, when the substantially horizontal long side wall 2 stands upright, as shown in FIG. 13, the contact block portion 2 e 2 of the hinge block 2 e is formed on the bottom portion 1. The lower side horizontal flange 2a of the long side wall 2 extends horizontally below the flange 1f2 of the hook 1f projecting from the inner wall 1a1 of the long side bank 1a. It will be placed on the part 1a2. The abutment block portion 2e2 of the hinge block 2e that has entered under the hook portion 1f2 of the hook 1f is configured to come into contact with the hook portion 1f2 of the hook 1f or take an approaching position. Therefore, when the folding container is assembled in a box shape, the long side wall 2 does not rattle in the vertical direction.

  As described above, in order to hinge-connect the bottom 1 and the long side wall 2, the long side wall 2 is arranged in a substantially horizontal state so as to be substantially parallel to the bottom 1 as shown in FIG. 10. Then, when the long side wall 2 is lowered toward the bottom portion 1, the width W5 in the vertical direction with respect to the lower end horizontal flange 2a of the hinge block 2e becomes the outer wall portion 1a3 and the inner wall of the long side bank portion 1a of the bottom portion 1. The hinge block 2e is formed wider than the gap W6 between the tip of the hook 1f projecting on the inner surface of the portion 1a1, and the hinge block 2e has an upper inclined surface 1f1 of the hook 1f as shown in FIG. Further, the long side wall 2 is forcibly lowered toward the bottom 1 and is hinged to the inner surface of the outer wall 1a3 and the inner wall 1a1 of the long side bank 1a of the bottom 1 by the hinge block 2e. A gap W between the tip of the protruding hook 1f The as spread press, the hinge block 2e is, as shown in FIG. 12 will be disposed between the outer wall section 1a3 and the inner wall portion 1a1 of the long-side bank portions 1a.

  Since it is configured as described above, a state in which the female hinge member H1 disposed on the bottom portion 1 and the male hinge member H2 disposed on the long side wall 2 are hinge-connected is shown in FIG. Even if the long side wall 2 is moved upward while maintaining the substantially horizontal state from the substantially horizontal state, the contact block portion of the hinge block 2e constituting the male hinge member H2 disposed on the long side wall 2 2e2 abuts against the flange 1f2 of the hook 1f constituting the female hinge member H1 disposed on the bottom 1, so that the male hinge member H2 disposed on the long side wall 2 and the female hinge disposed on the bottom 1 The hinge connection with the member H1 is not released.

  When the above-described hinge connection between the bottom 1 and the long side wall 2 is performed, the hinge block 2e of the male hinge member H2 disposed on the long side wall 2 is replaced with the female disposed on the long side bank portion 1a of the bottom 1. A type of hinge coupling mechanism that is press-fitted into the hinge member H1 is referred to as a forced press-fit type hinge coupling mechanism, and is denoted by reference numeral H ′.

  Next, a hinge connection mechanism that is partially different from the above-described forced press-fit hinge connection mechanism H ′ will be described with reference to FIGS. 14 and 15.

  In this hinge coupling mechanism, a female hinge member disposed on the bottom 1 has a width W5 in the vertical direction with respect to the lower horizontal flange 2a of the hinge block 2e constituting the male hinge member H2 disposed on the long side wall 2. It differs from the above-mentioned forced press-fit type hinge coupling mechanism H ′ in that it is formed narrower than the gap W6 between the tip of the hook 1f constituting the H1 and the outer wall portion 1a3 of the long side bank portion 1a. It is.

  In order to hinge-connect the bottom 1 and the long side wall 2, as shown in FIG. 14, the long side wall 2 is substantially parallel to the bottom 1, as in the above-described forced press-fit hinge coupling mechanism H ′. The long side wall 2 is lowered toward the bottom 1 while maintaining that state, and the hinge block 2e formed on the long side wall 2 is moved to the long side bank portion 1a. The support piece 2c on which the hinge block 2e formed on the long side wall 2 projects is inserted into the notch recess 1e formed on the long side bank portion 1a. In other words, the width W5 in the direction perpendicular to the lower flange 2a of the hinge block 2e is such that the tip of the hook 1f protruding from the inner surface of the outer wall 1a3 and the inner wall 1a1 of the long side bank 1a of the bottom 1 is provided. It is formed narrower than the gap W6 between Thus, unlike the forced press-fit hinge coupling mechanism H ′ described above, the hinge block 2e is not placed on the upper inclined surface 1f1 of the hook 1f, and the hinge block 2e has no resistance and the bottom 1 15 passes through the gap W6 between the outer wall portion 1a3 of the long side bank portion 1a and the tip of the hook 1f projecting from the inner surface of the inner wall portion 1a1, and is arranged on the bottom portion 1 as shown in FIG. The female hinge member H1 provided and the male hinge member H2 disposed on the long side wall 2 are hinge-connected.

  As described above, the hinge block 2e of the male hinge member H2 disposed on the long side wall 2 has no resistance, and the tip of the hook 1f of the female hinge member H1 disposed on the bottom 1 and the long side bank portion 1a. 15, the male hinge member H <b> 2 disposed on the long side wall 2 and the bottom portion 1 are disposed as shown in FIG. 15. The long side wall 2 and the bottom 1 are hinge-connected by the female hinge member H1, and the long side wall 2 is moved upward from the substantially horizontal state while maintaining the substantially horizontal state. The abutment block 2e2 of the hinge block 2e constituting the male hinge member H2 disposed on the long side wall 2 contacts the flange 1f2 of the hook 1f constituting the female hinge member H1 disposed on the bottom 1. Without passing through the gap W6. Ri, Therefore, the hinge connection between the female hinge member H1 disposed on the male hinge member H2 and bottom 1 which is arranged in the long side wall 2 is released easily.

  As described above, the width W5 in the direction perpendicular to the lower end horizontal flange 2a of the hinge block 2e constituting the male hinge member H2 disposed on the long side wall 2 is the same as that of the female hinge member H1 disposed on the bottom portion 1. It is formed narrower than the gap W6 between the tip of the hook 1f constituting the outer wall portion 1a3 of the long side bank portion 1a, and is arranged on the long side wall 2 when the bottom portion 1 and the long side wall 2 are hinged. A hinge coupling mechanism of a type that can be hinge-coupled without pressing the hinge block 2e of the provided male hinge member H2 into the female hinge member H1 disposed on the long side bank portion 1a of the bottom 1 is non-forced. This is referred to as a press-fit type hinge coupling mechanism, and is denoted by a symbol H ″.

  The above-described non-forced press-fitting type hinge connection mechanism H ″ is applied to the hinge connection between the side wall and the bottom part that is tilted first from the state assembled in the box shape, and the forced press-fit type hinge connection mechanism H ′ is applied to the box. Patent Document 1 discloses a folding container that is applied to a hinge connection between a side wall and a bottom part that is tilted later after being assembled into a mold.

JP 2005-126107 A

  The folding container is assembled into a box shape as shown in FIG. 6 or folded as shown in FIG. In other words, the long side wall 1 and the short side wall 3 are frequently rotated between a position where the long side wall 1 and the short side wall 3 are tilted substantially horizontally as shown in FIG. Will be moved. By such rotation of the long side wall 1 and the short side wall 3, the male hinge member H2 disposed on the long side wall 1 and the short side wall 3 may be damaged.

  Further, when assembling or folding the folding container, the operator may excessively rotate the long side wall 1 and the short side wall 3 in the collapsed state to the outside beyond the vertical position. Even in such a case, a load is applied to the male hinge member H2, and the male hinge member H2 disposed on the long side wall 1 or the short side wall 3 may be damaged.

  Further, during the transportation, transportation and handling of the folding container, the long side wall 1 and the short side wall 3 may come into contact with other objects and the folding container and may be damaged.

  In the conventional folding container, as described above, the long side wall 2 and the long side wall 2 and the bottom 1 and the short side wall 3 are hinged after the bottom part 1 and the long side wall 2 are hinged. The male hinge member H2 disposed on the short side wall 3 is forcibly fitted into the female hinge member H1 disposed on the long side bank portion 1a and the short side bank portion 1b of the bottom portion 1. For this reason, it is very difficult to remove the long side wall 2 and the short side wall 3 from the bottom 1.

  For example, when the hinge connection between the bottom part 1 and the long side wall 2 is released, as shown in FIG. 12, the long side side of the bottom part 1 in the state where the long side wall 2 is tilted substantially horizontally. A rod such as a screwdriver is inserted into the gap formed between the inner wall 1a1 and the outer wall 1a3 from the back side of the bank portion 1a to force the male hinge member H2 of the long side wall 2 upward. By pushing up, the hinge block 2f of the male hinge member H2 is removed from the gap W6 between the outer wall portion 1a3 of the long side bank portion 1a of the bottom portion 1 and the tip of the hook 1f protruding from the inner surface of the inner wall portion 1a1. It was made to discharge | emit and the hinge connection of the bottom part 1 and the long side wall 2 was cancelled | released.

  In order to remove the long side wall 2 from the bottom part 1, such a hinge connection release operation must be performed at all the hinge connection points between the female hinge member H1 of the bottom part 1 and the male hinge member H2 of the long side wall 2. Therefore, much time and labor were required for the replacement work of the long side wall 2. In particular, as the size of the folding container is increased, the number of hinge connection points is increased, and the replacement work of the long side wall 2 and the short side wall 3 requires much more time and labor.

  Further, when a rod such as a screwdriver is inserted into the gap formed between the inner wall 1a1 and the outer wall 1a3 from the back side of the long side bank portion 1a of the bottom portion 1 to release the hinge connection. There is a problem that a rod body such as a driver abuts on the female hinge member H1 and the long side bank portion 1a disposed on the bottom portion 1 to damage the female hinge member H1 and the bottom portion 1.

  In Patent Document 1, a non-forced press-fit type hinge coupling mechanism H ″ is applied to all hinge coupling portions between the long side wall 2 and the bottom portion 1 that are tilted first, and the short side wall 3 and the bottom portion 1 that are tilted later are applied. A folding container to which a forced press-fitting type hinge coupling mechanism H ′ is applied is disclosed in all the hinge coupling parts of the above, but when the short side wall 3 is damaged, the short side wall 3 is the same as described above. There is a problem that it takes a lot of time and labor for the replacement work.In addition, the non-forced press-fitting type hinge connection mechanism H ″ is applied to all hinge connection parts of the long side wall 2 and the bottom part 1 that are tilted first. Therefore, in the middle of rotating the long side wall 2 in the substantially horizontal state in the vertical direction or in the middle of rotating the long side wall 2 in the substantially vertical state so as to overlap the bottom portion 1, Hinge constituting the arranged male hinge member H2 The lock 2e comes out of the gap W6 between the tip of the hook 1f constituting the female hinge member H1 disposed on the bottom portion 1 and the outer wall portion 1a3 of the long side bank portion 1a, and the hinge connection is released. There was a problem.

  An object of the present invention is to solve the problems of the above-described conventional folding container.

  In order to achieve the above-mentioned object, the present invention is hinged to the bottom, one opposing side wall hinged to the opposite bank of the bottom, and the other opposite bank of the bottom. From the state assembled in a box shape, the one side wall is brought down so as to overlap the bottom, and then the other side wall is overlapped with the bottom. In the folding container that can be folded by being tilted, firstly, some of the plurality of hinge connecting portions of the opposite bank portion of the bottom portion and the opposite side wall hinged to the bank portion are selected. Is a forced press-fit hinge connection mechanism, and the remaining hinge connection portion is a non-forced press-fit hinge connection mechanism. Second, a female hinge member constituting the forced press-fit hinge connection mechanism The outer wall is provided with a protrusion that contacts the male hinge member. Third, the thickness of the outer wall of the female hinge member constituting the forced press-fit hinge coupling mechanism is reduced. Fourth, the long side length of the female hinge member that constitutes the forced press-fit type hinge connection mechanism is set to be longer than the long side length of the vertical hole of the female hinge member that constitutes the non-forced press-fit type hinge connection mechanism. It is a long one.

  Since this invention has the structure mentioned above, there can exist the effect described below.

  Among the plurality of hinge connection parts of the opposite bank part at the bottom and the opposite side wall hinged to the bank part, some are forced press-fit type hinge connection mechanisms, and the remaining hinge connection parts are non-forced Since the press-fit type hinge connection mechanism is used, the hinge connection between the bottom and the side wall can be easily and reliably released by moving the substantially horizontal side wall in the direction of the bank at the bottom.

  In addition, since the protrusion that the male hinge member abuts is provided on the outer wall of the female hinge member that constitutes the forced press-fit type hinge coupling mechanism, when the substantially horizontal side wall is moved in the direction of the bottom bank In addition, the pressing force can be concentrated on the outer wall portion of the bank portion through the protrusion, and therefore, the outer wall portion of the bank portion can be easily elastically deformed outward, and thus, the bottom portion and the side wall portion. The hinge connection can be released more easily and more reliably.

  Since the wall thickness of the outer wall portion of the female hinge member constituting the forced press-fit type hinge coupling mechanism is reduced, the outer wall portion of the bank portion is moved when the substantially horizontal side wall is moved in the direction of the bank portion of the bottom portion. The outer side can be easily elastically deformed, so that the hinge connection between the bottom and the side wall can be released more easily and more reliably.

  Since the long side length of the vertical hole of the female hinge member that constitutes the forced press-fit type hinge coupling mechanism is longer than the long side length of the vertical hole of the female hinge member that constitutes the non-forced press-fit type hinge coupling mechanism, When the side wall in the state is moved in the direction of the bank at the bottom, the outer wall of the bank can be easily elastically deformed outward, so that the hinge connection between the bottom and the side wall can be more easily performed. And it can cancel more reliably.

  Hereinafter, examples of the present invention will be described. However, the present invention is not limited to these examples as long as the gist of the present invention is not exceeded. In addition, about the same component as the conventional folding container mentioned above, while using the same code | symbol, the detailed description is abbreviate | omitted.

  As described in Patent Document 1, the present invention applies the non-forced press-fitting type hinge coupling mechanism H ″ to all hinge coupling portions of the side wall and the bottom portion that are tilted first, and is tilted later. Without applying the forced press-fit type hinge connection mechanism H ′ to all the hinge connection parts between the side wall and the bottom part, some of the hinge connection parts between the side wall and the bottom part that are tilted first are forced press-fit type hinge connection mechanisms H. The remaining hinge connection part is a non-forced press-fit type hinge connection mechanism H ", and similarly, some of the hinge connection parts between the side wall and the bottom that are tilted later are forced press-fit type hinge connection. The mechanism H ′ is used, and the remaining hinge connection portion is a non-forced press-fit hinge connection mechanism H ″.

  6 to 8, there are four hinge connecting portions of the female hinge member H <b> 1 disposed on the long side bank portion 1 a of the bottom portion 1 and the male hinge member H <b> 2 disposed on the long side wall 2. An example is shown in which there are four hinge connecting portions between the female hinge member H1 disposed on the short side bank portion 1b of the bottom portion 1 and the male hinge member H2 disposed on the short side wall 3, In the present invention, a female hinge member H1 positioned near both ends of the long side bank portion 1a of the bottom 1 and a male hinge member H2 positioned near both ends of the long side wall 2 corresponding to the female hinge member H1. Is a non-forced press-fit type hinge coupling mechanism H ″, a female hinge member H1 positioned on the center side of the long side bank portion 1a of the bottom portion 1, and a long corresponding to the female hinge member H1. The hinge connecting portion with the male hinge member H2 located on the center side of the side wall 2 is connected to the forced press-fitting type H Similarly, the bottom of the four hinge connection portions of the female hinge member H1 disposed on the bottom portion 1 and the male hinge member H2 disposed on the short side wall 3 is the bottom portion. A hinge connecting portion between a female hinge member H1 located near both ends of one short side bank portion 1b and a male hinge member H2 located near both ends of the short side wall 3 corresponding to the female hinge member H1. , A non-forced press-fit type hinge coupling mechanism H ″, a female hinge member H1 positioned on the central side of the short side bank portion 1b of the bottom portion 1, and a central side of the short side wall 3 corresponding to the female hinge member H1 The hinge connection portion with the male hinge member H2 positioned at is a forced press-fit type hinge connection mechanism H ′.

  For example, when the hinge connection between the bottom portion 1 and the long side wall 2 is released, as shown in FIG. 12, the long side wall 2 in a substantially horizontal state is moved to the bottom portion 1 in a state where the long side wall 2 is tilted. Are moved in the direction of the long side bank portion 1a, the hinge block 2e of the male hinge member H2 disposed on the long side wall 2 constitutes the inner and outer wall portions of the female hinge member (the long side side bank portion 1a of the bottom portion 1). Of the outer wall portion 1b3 constituting the outer wall portion 1a3 and the short side bank portion 1b, a portion located in the female hinge member H1 disposed on the bottom portion 1, in other words, a vertical hole 1d having a rectangular planar shape is formed. This portion is referred to as a female hinge member inner / outer wall portion.) Abutting on 1a3 ′, the female hinge member inner / outer wall portion 1a3 ′ is elastically deformed outwardly in a curved shape. Projected on the inner surface of the outer wall 1a3 and the inner wall 1a1 of the side bank 1a The gap W6 between the hook 1f and the tip of the hook 1f is larger than the width W5 in the direction perpendicular to the lower end horizontal flange 2a of the hinge block 2e of the male hinge member H2. By moving the long side wall 2 in the horizontal state upward, the hinge connection between the bottom 1 and the long side wall 2 can be easily released.

  As described above, some of the hinge connecting portions among the plurality of hinge connecting portions of the female hinge member H1 provided on the bottom portion 1 and the male hinge member H2 provided on the long side wall 2 are subjected to non-forced press fitting. Type hinge coupling mechanism H ″ and the remaining hinge coupling portions are forced press-fit type hinge coupling mechanisms H ′, so that all hinge coupling portions are forced press-fit type hinge coupling mechanisms H ′. As compared with the above, the hinge connection between the bottom portion 1 and the long side wall 2 can be released easily and quickly, so that the workability of the replacement work of the long side wall 2 is improved. The hinge connection between the bottom part 1 and the long side wall 2 as described above is released during the rotation of the long side wall 2 as in the conventional folding container in which the hinge connection part is a non-forced press-fitting type hinge connection mechanism H ". Sure that the problem It can be solved.

  Next, another embodiment of the present invention will be described with reference to FIGS.

  In this embodiment, in the forced press-fit type hinge coupling mechanism H ′, the inner wall surface (inner wall portion 1a1 and inner wall portion 1a3 ′) of the female hinge member inner / outer wall portion 1a3 of the outer wall portion 1a3 constituting the long side bank portion 1a of the bottom portion 1. A projecting portion 1g with which the male hinge member H2 disposed on the long side wall 2 abuts is provided at a substantially central portion of the opposing surface 1a3 ″. As shown, the male hinge member H2 disposed on the long side wall 2 in the state of being tilted substantially horizontally is formed at a position where it abuts. The lower end surface 2d1 (FIG. 9) of the connecting piece 2d that connects the pair of support pieces 2c of the male hinge member H2 comes into contact with the lower end surface 2d1.

  Thus, the male hinge member H2 disposed on the long side wall 2 is disposed on the inner wall surface 1a3 ″ of the female hinge member inner / outer wall portion 1a3 ′ of the outer wall portion 1a3 constituting the long side bank portion 1a of the bottom portion 1. Since the projecting portion 1g that abuts is projected, as described above, the long side wall 2 that is in a substantially horizontal state is connected to the length of the bottom portion 1 during the hinge connection release operation between the bottom portion 1 and the long side bank portion 1a. When moved in the direction of the side bank portion 1a, the inner wall portion 1a3 'of the female hinge member of the long side bank portion 1a of the bottom portion 1 is moved by moving the bottom portion 1 of the long side wall 2 in the direction of the long side bank portion 1a. Is concentrated on the portion where the protrusion 1g of the female hinge member inner / outer wall portion 1a3 ′ is provided, and thus the female hinge member constituting the outer wall portion 1a3 of the long side bank portion 1a of the bottom portion 1 The inner and outer wall portions 1a3 ′ are elastically deformed in a curved shape easily and surely outward. Bets can be, therefore, hinged by forced press-type hinge coupling mechanism H 'between the bottom 1 and the long side wall 2, quickly, and can reliably be released.

  In the present embodiment, the projecting portion 1g protrudes from the central portion in the lateral width direction of the inner wall surface 1a3 ″ of the female hinge member inner / outer wall portion 1a3 ′ and from the upper portion of the inner wall surface 1a3 ″ It is configured as a vertical ridge having a predetermined length extending to the vicinity of the lower end.

  When folding a folded container assembled in a box shape, one of the opposing long side walls 2 is first brought down so as to overlap the bottom 1 and then the other long side wall 2 is moved down. Then, it is brought down so as to overlap one long side wall 2 superimposed on the bottom 1. Therefore, the male hinge member H2 of the one long side wall 2 that is tilted first is positioned close to the bottom 1, but the male hinge of the other long side wall 2 placed on the one long side wall 2 is placed. The member H <b> 2 is at a position separated from the bottom portion 1 by the thickness of the long side wall 2 compared to the male hinge member H <b> 2 of one long side wall 2. Therefore, when the long side wall 2 is replaced, the male hinge member H2 of the first long side wall 2 that is tilted first and the male hinge member H2 of the other long side wall 2 that is tilted later are brought into contact with each other. The protrusion 1g is preferably configured as a vertical protrusion having a predetermined length extending from the upper part of the inner wall surface 1a3 ″ to the vicinity of the lower end of the inner wall surface 1a3 ″.

  The protrusion 1g as described above is also formed on the male hinge member H2 of the short side wall 3 of the forced press-fit type hinge coupling mechanism H 'that constitutes the hinge coupling portion between the bottom 1 and the short side wall 3. Since this configuration is the same as the male hinge member H2 of the long side wall 2 of the forced press-fit hinge coupling mechanism H ′ that constitutes the hinge coupling portion between the bottom 1 and the long side wall 2 described above, detailed description thereof is omitted. .

  Still another embodiment of the present invention shown in FIGS. 3 and 4 is that in the forced press-fit hinge coupling mechanism H ′, in the female hinge member of the outer wall portion 1a3 constituting the long side bank portion 1a of the bottom portion 1. Instead of the protruding portion 1g protruding from the inner wall surface 1a3 ″ of the outer wall portion 1a3 ′, the thickness D1 of the outer wall portion 1a3 of the long side bank portion 1a is set from the thickness D2 of the outer wall portion 1a3 of the above-described embodiment. By configuring in this way, the long side wall is removed during the hinge connection release operation of the forced press-fit type hinge connecting mechanism H ′ that constitutes the hinge connecting portion between the bottom 1 and the long side wall 2 described above. When the hinge block 2e of the male hinge member H2 disposed in 2 is in contact with the outer wall 1a3 of the long side bank 1a, the outer wall 1a3 of the long side bank 1a can be easily and It can surely be elastically deformed outwardly in a curved shape. Thus, the workability of the hinge connection release work of the forced press-fit type hinge connection mechanism H ′ constituting the hinge connection part between the bottom part 1 and the long side wall 2 is improved, and the outer wall part 1a3 constituting the long side bank part 1a. It is also possible to reduce only the thickness of the female hinge member inner / outer wall portion 1a3 ′ located in the portion where the vertical hole 1d is formed in the outer wall portion 1a3 without reducing the overall thickness of the outer wall portion 1a3. By reducing only the thickness of the inner / outer wall portion 1a3 ′ of the female hinge member, it is possible to suppress the rigidity and strength of the long side bank portion 1a, and hence the lowering of the rigidity and strength of the bottom portion 1.

  In the forced press-fit type hinge coupling mechanism H ′, a projection 1 g is projected from the inner wall surface 1 a 3 ″ of the female hinge member inner / outer wall portion 1 a 3 ′ of the outer wall portion 1 a 3 constituting the long side bank portion 1 a of the bottom portion 1, Furthermore, the thickness D1 of the outer wall portion 1a3 of the long side bank portion 1a can be made thinner than the thickness D2 of the outer wall portion 1a3 of the above-described embodiment.

  Next, still another embodiment of the present invention will be described with reference to FIG.

  In this embodiment, in the forced press-fit hinge coupling mechanism H ′, the long side length (long side side) of the vertical hole 1d formed in the long side bank portion 1a and the horizontal portion 1a2 of the long side bank portion 1a. The length W2 ′ along the longitudinal direction of the bank portion 1a) is defined as the long side length of the vertical hole 1d formed in the non-forced press-fitting type hinge coupling mechanism H ″ (along the longitudinal direction of the long side bank portion 1a). In other words, by increasing the long side length W2 ′ of the vertical hole 1d, the lateral width of the inner and outer wall portions 1a3 ′ of the female hinge member in the forced press-fit hinge coupling mechanism H ′ is increased. However, it becomes wider than the lateral width of the inner and outer wall portions 1a3 ′ of the female hinge member in the non-forced press-fit type hinge coupling mechanism H ″.

  By configuring in this way, the hinge block 2e of the male hinge member H2 disposed on the long side wall 2 during the operation of releasing the hinge connection between the bottom 1 and the long side wall 2 described above, the inner and outer wall portions of the female hinge member When it abuts against 1a3 ′, the inner and outer wall portions 1a3 ′ of the female hinge member can be elastically deformed in a curved shape to the outside easily and surely. The workability of the hinged connection releasing operation of the forced press-fitting type hinged connecting mechanism H ′ constituting the hinge connecting part is improved.

  In the forced press-fit type hinge coupling mechanism H ′, a projection 1 g is projected from the inner wall surface 1 a 3 ″ of the female hinge member inner / outer wall portion 1 a 3 ′ of the outer wall portion 1 a 3 constituting the long side bank portion 1 a of the bottom portion 1, Furthermore, the thickness D1 of the outer wall portion 1a3 of the long side bank portion 1a is made thinner than the thickness D2 of the outer wall portion 1a3 of the embodiment described above, and further, the long side bank portion 1a and the long side bank portion are further reduced. The long side length W2 ′ of the vertical hole 1d formed in the horizontal portion 1a2 of 1a can be made longer than the long side length of the vertical hole 1d formed in the non-forced press-fitting hinge coupling mechanism H ″.

  The above-described combination of the configuration of the present invention of projecting the projecting portion 1g, reducing the thickness D1 of the outer wall portion 1a3, and increasing the long side length W2 ′ of the vertical hole 1d is appropriately folded. It can be selected depending on the size and material of the container.

FIG. 1 is a partially enlarged perspective view of a bottom portion constituting the folding container of the present invention. FIG. 2 is a partially enlarged cross-sectional view perpendicular to the longitudinal direction of the bank portion of the bottom portion in a state where the bottom portion and the long side wall constituting the folding container of the present invention are hinge-connected. FIG. 3 is a partially enlarged perspective view of a bottom portion constituting a folding container according to another embodiment of the present invention. FIG. 4 is a partially enlarged cross-sectional view similar to FIG. 2 in a state where the bottom and the long side wall constituting the folding container of the present invention are hinge-connected. FIG. 5 is a partially enlarged perspective view of a bottom portion constituting a folding container according to still another embodiment of the present invention. FIG. 6 is a perspective view of a conventional folding container assembled in a box shape. FIG. 7 is a perspective view of the conventional folding container during folding or assembling. FIG. 8 is a perspective view of a state in which a conventional folding container is folded. FIG. 9 is a partially exploded perspective view for explaining a hinge connection between a bottom portion and a long side wall of a conventional folding container. FIG. 10 is a partial vertical cross-sectional view perpendicular to the longitudinal direction of the bottom bank portion in FIG. 9. FIG. 11 is a partial vertical sectional view similar to FIG. 10 showing a hinge connection process between the bottom and the long side wall. FIG. 12 is a partial vertical sectional view similar to FIG. 10 showing a state where the bottom and the long side wall are hinge-connected. FIG. 13 is a partial vertical sectional view similar to FIG. 10 showing a state in which the hinged long side wall is erected. FIG. 14 is a partial vertical cross-sectional view similar to FIG. 10 of the bottom and the long side wall for explaining another hinge connection in the conventional folding container. FIG. 15 is a partial vertical sectional view similar to FIG. 12 with the bottom and long side walls shown in FIG. 14 hinged.

Explanation of symbols

H '············· Forced press-fit type hinge connection mechanism H ”························ Non-forced press-fit type hinge connection mechanism H1・ Female hinge member H2 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Male hinge member 1 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Bottom 1a ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Long side bank 1b ······ Short side bank 1f ········· Hook 1g ················································・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Long side wall 2c ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Support piece 2c
2d ······· Connecting piece 2e ······················································ Short side wall

Claims (4)

  A box having a bottom, one opposite side wall hinged to one opposite bank portion of the bottom, and another opposite side wall hinged to the other opposite bank portion of the bottom In the folding container that can be folded from the assembled state by tilting the opposite one side wall so as to overlap the bottom, and then tilting the other opposite side wall so as to overlap the bottom, Among the plurality of hinge connecting portions of the opposite bank portion of the bottom and the opposite side wall hinged to the bank portion, some are forced press-fit type hinge connecting mechanisms, and the remaining hinge connecting portions are A folding container characterized by a non-forced press-fit type hinge connection mechanism.   2. The folding container according to claim 1, wherein a projecting portion with which the male hinge member abuts is provided on an outer wall portion of the female hinge member constituting the forced press-fit hinge coupling mechanism.   The folding container according to claim 1 or 2, wherein the wall thickness of the outer wall portion of the female hinge member constituting the forced press-fit hinge coupling mechanism is formed thin.   The long side length of the vertical hole of the female hinge member constituting the forced press-fit type hinge coupling mechanism is formed longer than the long side length of the vertical hole of the female hinge member constituting the non-forced press-fit type hinge coupling mechanism. The folding container according to any one of claims 1 to 3, wherein the folding container is provided.

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