JP2015051775A - Collapsible container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a collapsible container, liftable by easily hooking a hand, capable of preventing the hand from contacting with a cargo, and being higher in strength more than usual.SOLUTION: The collapsible container 10 of the present invention is provided by rotatably connecting a pair of first sidewalls 11 and 11 and a pair of second sidewalls 21 and 21 to respective outer edge parts of a quadrangular bottom wall 30, and can be changed to an assembly state of standing the first and second sidewalls 11 and 21 and a folding-up state of folding up the pair of second sidewalls 21 and 21 on these after folding up the pair of first sidewalls 11 and 11 on the bottom wall 30. Handles 50 are rotatably installed on the respective first sidewalls 11, and the handles 50 can be changed to a nonuse state of being superposed on outer surfaces of the first sidewalls 11 and a use state of being raised up from the outer surfaces of the first sidewalls 11.

Description

  In the present invention, a side wall is rotatably connected to each outer edge portion of a rectangular bottom wall, and the side wall can be changed between an assembled state in which the side wall is raised from the bottom wall and a folded state in which the side wall is folded on the bottom wall. Regarding tatami containers.

  2. Description of the Related Art Conventionally, as this type of folding container, one in which a manual feed hole is formed in a side wall so as to be easily handled and lifted is known (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2003-212233 (see FIG. 2)

  However, in the conventional folding container described above, the strength of the side wall is reduced due to the provision of the manual feed hole, and it may be difficult to maintain the assembled state against a large load. In addition, a situation where the hand inserted into the manual feed hole touches the load in the folding container and damages the load (for example, food) by the hand or damages the hand by the load (for example, mechanical parts) may occur. .

  The present invention has been made in view of the above circumstances, and can provide a folding container that can be easily put on and lifted, can prevent a hand from contacting a load, and has higher strength than conventional ones. And

  In order to achieve the above object, the folding container according to the first aspect of the present invention is an assembly in which the side walls are pivotally connected to the respective outer edges of the rectangular bottom wall, and the side walls stand up from the bottom wall. In a folding container that can be changed between a state and a folded state in which a pair of side walls facing each other are folded on the bottom wall and then folded on the other pair of side walls, The upper end of the side wall is pivotably attached to the side wall, and the handle is capable of changing between a non-use state superimposed on the outer surface of the side wall and a use state raised from the outer surface of the side wall.

  According to a second aspect of the present invention, in the folding container according to the first aspect, the pair of handle side ribs that protrude from the outer surface of the side wall and are located on both sides of the handle and receive the unused handle therebetween are provided. However, it has characteristics.

  According to a third aspect of the present invention, in the folding container according to the second aspect of the present invention, a pair of rotating shaft protrusions projecting from the upper end of the handle to both sides and a pair of handle side ribs are formed. A pair of support holes that rotatably receive the pivot shaft protrusions, and protrude from the outer surface of the side wall, and extend from the opening edge of the pair of support holes of the pair of handle side ribs to the opposite side of the handle. It is characterized by having a pair of reinforcing ribs.

  According to a fourth aspect of the present invention, in the folding container according to any one of the first to third aspects, the side walls adjacent to each other in the assembled state are engaged with each other, and are folded first from the assembled state. An outer surface of the pair of side walls is provided with an unlocking operation portion for releasing the engagement between the side walls at the center in the lateral direction of the upper end portion, and the handle is disposed directly below each unlocking operation portion. However, it has characteristics.

  According to a fifth aspect of the present invention, in the folding container according to any one of the first to fourth aspects, a lower end guide surface that is inclined downward toward the lower end portion of the handle toward the lower end portion of the handle. It is characterized in that is formed.

[Invention of Claim 1]
A handle is rotatably attached to the side wall of the folding container of claim 1. The handle can be stacked on the outer surface of the side wall so that it does not get in the way when folding the folding container. Further, if the handle is raised from the outer surface of the side wall, it can be easily put on the handle, thereby facilitating the lifting operation of the folding container. Furthermore, by providing a handle, it is not necessary to provide a through-hole corresponding to the manual feed hole of a conventional folding container in the side wall, so that the strength of the folding container is increased and the hand is prevented from contacting the load. Can do. Further, the folded side wall can be easily raised by using the handle when the folding container is changed from the folded state to the assembled state.

[Invention of claim 2]
In the folding container according to the second aspect, since the handle in the unused state is protected between the pair of handle side ribs protruding from the outer surface of the side wall, the handle is prevented from being damaged or deformed.

[Invention of claim 3]
In the folding container according to the third aspect, since the reinforcing rib extends from the opening edge of the support hole for receiving the rotating shaft protrusion of the handle among the handle side ribs and the handle side ribs are reinforced, the support of the handle is stabilized. In addition, since the side walls are reinforced by the handle side ribs and the reinforcing ribs and are not easily deformed, the support of the handle is also stable in this respect.

[Invention of claim 4]
In the folding container according to claim 4, since the handle is arranged directly under the unlocking operation unit, it is possible to prevent a situation where the folding container is lifted by placing a hand on the unlocking operation unit. Deformation and erroneous operation of the operation unit can be prevented.

[Invention of claim 5]
In the folding container according to the fifth aspect, the handle is rotated by the sliding contact between the lower end guide surface of the handle and the hand only by inserting the hand from below into the unused handle and the side wall. Accordingly, the handle can be easily changed from the non-use state to the use state, and the handle can be easily put on.

The perspective view of the assembly state of the folding container which concerns on 1st Embodiment of this invention Perspective view of the state in the middle of folding the folding container Perspective view of the state in the middle of folding the folding container Partially enlarged perspective view of the second side wall Front view of the first side wall (A) Perspective view of the front side of the handle, (B) Perspective view of the back side of the handle Front view of the upper end of the handle The perspective view of the state which removed the handle of the 1st side wall The partially broken perspective view of the peripheral part of a support hole among 1st side walls Partially cutaway perspective view of handle and connecting portion of first side wall Partially broken perspective view of the first side wall Perspective view of folding container with handle lifted Perspective view of the folding container in the middle of the folded state to the assembled state The perspective view of the folding container of 2nd Embodiment Perspective view of folding container with handle lifted (A) Perspective view of the front side of the handle, (B) Perspective view of the back side of the handle Sectional view showing a variation of the folding container

[First Embodiment]
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the folding container 10 according to the present embodiment has a box shape with an open upper surface and a rectangular planar shape, and is 1 at the outer edge of the pair of short sides of the bottom wall 30. The pair of first side walls 11, 11 are rotatably connected, and the pair of second side walls 21, 21 are rotatably connected to the outer edges of the pair of long sides of the bottom wall 30. . The folding container 10 has an assembled state (see FIG. 1) in which the first and second side walls 11 and 21 are erected from the bottom wall 30, and a pair of first walls as shown in FIG. 2 from the assembled state. After the side walls 11, 11 are folded on the bottom wall 30, the pair of second side walls 21 can be folded on the first side walls 11, 11 (see FIG. 3). .

  Specifically, as shown in FIG. 2, a pair of first side wall support protrusions 31, 31 project upward from a pair of short side outer edges of the bottom wall 30, and a pair of long side sides A pair of second side wall support protrusions 32, 32 protrude upward from the outer edge portion. The first and second side wall support protrusions 31 and 32 are formed with a plurality of arm receiving portions 35 at intervals in the longitudinal direction. Each arm receiving portion 35 opens to the upper surface and the inner surface of the first and second side wall support protrusions 31 and 32, and the upper surface opening is wider than the inner surface opening. Further, on the inner upper end portion of the arm receiving portion 35, a retaining projection (not shown) is formed on both sides of the inner surface opening.

  A plurality of hinge arms 23 shown in FIG. 5 are provided on the lower end surfaces of the first and second side walls 11 and 21 so as to correspond to the respective arm receiving portions 35. The hinge arm 23 includes an arm main body 23H that hangs down from the lower end surface of the first or second side wall 11 and 21, and a pair of hinge pins 23P and 23P that protrude from both side surfaces of the lower end portion of the arm main body 23H. The hinge pins 23P, 23P are received inside from the upper surface opening of the arm receiving portion 35 and are prevented from being detached by the above-described retaining protrusions (not shown).

  As a result, the first and second side walls 11 and 21 are rotatably connected to the first and second side wall support protrusions 31 and 32 of the bottom wall 30, so that the first and second side wall support protrusions are provided. It is possible to change between a standing posture standing upright on 31 and 32 and a folding posture lying down on the bottom wall 30. Further, as shown in FIG. 2, the second side wall support protrusion 32 protrudes higher than the first side wall support protrusion 31, and is located at the center of rotation of the second side wall 21 from the center of rotation of the first side wall 11. Is arranged on the upper side. Thereby, the 2nd side walls 21 and 21 can be piled up and folded on the 1st side walls 11 and 11 as mentioned above.

  The height of the first side walls 11, 11 is ½ or less of the long side of the bottom wall 30, and the height of the second side walls 21, 21 is 1 / th of the short side of the bottom wall 30. 2 or less. Thereby, in the folding container 10 of this embodiment, the 1st side walls 11 and 11 do not mutually overlap in the folded state, and the 2nd side walls 21 and 21 do not mutually overlap similarly.

  A pair of side protruding walls 22, 22 protrudes from both side edges of each second side wall 21 toward the first side walls 11, 11 side. Each side protruding wall 22 has a strip shape extending from the upper end portion of the second side wall 21 to a position near the lower end, and connecting holes 22A are formed through a plurality of positions in the longitudinal direction of each side protruding wall 22. .

  From the outer surface of the first side wall 11, a plurality of connecting protrusions 12A corresponding to the connecting holes 22A protrude from a plurality of positions along both side edges. When the folding container 10 is in the assembled state as shown in FIG. 1, the first side walls 11 are sandwiched between the pair of second side walls 21 and 21, and the second side walls 21 and 21 fall inward. The side protruding wall 22 overlaps the side edge of the first side wall 11 from the outside and the first side wall 11 is prevented from falling outside, and the first side wall 11 is connected to the connecting hole 22A of the side protruding wall 22. Eleven connecting projections 12A engage with the projections and depressions to restrict the second side wall 21 from falling outward.

  Further, as shown in FIG. 2, the gate-shaped protrusion 24 protrudes from a position near the upper end of the surface facing the first side wall 11 side of each side protruding wall 22. As shown in FIG. 4 in an enlarged manner, the gate-shaped protrusion 24 has a pair of leg portions 24A and 24A protruding from the side protrusion wall 22 arranged vertically, and a tip connecting portion between the tips of the leg portions 24A and 24A. It has a portal structure that is connected at 24B. And the lock | rock engagement part 40T (refer FIG. 5) mentioned later with which the 1st side wall 11 was equipped engages unevenly from the side in the portal-shaped protrusion 24, and the 1st side wall 11 of a standing posture is inside. The folding container 10 is locked in an assembled state by restricting falling.

  As shown in FIG. 1, ribs 11 </ b> L and 21 </ b> L protrude from the outer surfaces of the first and second side walls 11 and 21. The ribs 11L and 21L are disposed on the entire outer edge portions of the first and second side walls 11 and 21, and the ribs 11L and 21L extending in the lateral direction are located above the first and second side walls 11 and 21, respectively. The ribs 11L and 21L which are unevenly distributed and extend in the vertical direction are scattered at a plurality of positions in the horizontal direction of the first and second side walls 11 and 21. Note that the lower surfaces of the ribs 11L and 21L disposed at the lower edge portions of the first and second side walls 11 and 21 correspond to the lower surfaces of the first and second side walls 11 and 21, and the hinges described above are formed therefrom. The arm 23 group protrudes.

  Details of the structure of the rib 11L of the first side wall 11 are as follows. That is, the pair of handle side ribs 13 and 13 according to the present invention are provided symmetrically at two positions that are separated from the horizontal center of the first side wall 11 by the same distance to the left and right. Each handle side rib 13 extends in the vertical direction, and has a dividing portion 13A near the upper end of the first side wall 11, and extends continuously in the entire vertical direction of the first side wall 11 except for the dividing portion 13A. Yes.

  Main side ribs 14 and 14 extending continuously over the entire vertical direction of the first side wall 11 are provided at positions slightly shifted inward from both lateral ends of the first side wall 11. Then, the side protruding walls 22 and 22 of the second side wall 21 are overlapped on the outer side of the main side ribs 14 and 14 in the first side wall 11. Further, the sub side rib 15 shown in FIG. 5 protrudes lower than the main side rib 14 from the portion of the first side wall 11 where the side protruding wall 22 is overlapped. The sub-side rib 15 is divided at the same position as the dividing portion 13 </ b> A of the handle side rib 13 in the vertical direction of the first side wall 11.

  An upper end lateral rib 16A and a lower end lateral rib continuously extending so as to communicate between the pair of main side ribs 14 and 14 at the upper end and the lower end of the first side wall 11 and the lower vicinity position of the dividing portion 13A. 16C and intermediate transverse ribs 16B are provided. Further, above the center in the vertical direction of the first side wall 11, first to third sub-lateral ribs 17 </ b> A to 17 </ b> C are provided between the handle side ribs 13 and the main side ribs 14 on the left and right sides, respectively. Among them, the first sub lateral rib 17A is disposed in the vicinity of the upper side of the handle side rib 13 with respect to the dividing portion 13A, and the second sub lateral rib 17B is disposed below the intermediate lateral rib 16B. A third sub horizontal rib 17C is disposed below the sub horizontal rib 17B. The distance between the intermediate horizontal rib 16B and the second sub horizontal rib 17B below it and the distance between the second sub horizontal rib 17B and the third sub horizontal rib 17C below it are substantially the same. ing.

  First and second sub vertical ribs 18A and 18B are formed between the upper end horizontal rib 16A and the third sub horizontal ribs 17C and 17C on the left and right sides, respectively. The first sub-vertical rib 18A is disposed closer to the main side rib 14 and extends continuously between the upper end horizontal rib 16A and the third sub-lateral rib 17C. On the other hand, the second sub vertical rib 18B is disposed substantially at the center between the handle side rib 13 and the first sub vertical rib 18A, and the first sub horizontal rib 17A and the intermediate horizontal rib 16B are divided. ing.

  The first sub vertical rib 18A and the main side rib 14 are each formed with a rectangular through hole at a position facing the dividing portion 13A of the handle side rib 13, and a cover wall 19 communicates between the opening edges of the through holes. Has been. Further, one end portion of the cover wall 19 slightly protrudes outside the main side rib 14 as shown in FIG.

  A portion of the first side wall 11 surrounded by the pair of handle side ribs 13, 13, the upper end lateral rib 16 </ b> A and the intermediate lateral rib 16 </ b> B is covered with the operation unit cover 42 and inside the operation unit cover 42. The operation member 41 is assembled into the lock release operation unit 41S according to the present invention. Further, an operation window portion 42W is formed in the central portion in the horizontal direction of the operation portion cover 42 from the upper end to the lower end position, and a part of the operation member 41 is exposed through the operation window portion 42W. The operation member 41 is supported so as to be rotatable around a rotation axis facing the lateral direction of the first side wall 11 in the operation unit cover 42, and is integrally provided with an elastic piece (not shown) and is one end of the rotation range. It is biased to the lock position on the side. The operation member 41 rotates to move to the unlock position when the portion exposed from the operation window 42W is pressed downward.

  Lock bars 40, 40 are accommodated between the left and right first sub-lateral ribs 17A, 17A and the intermediate lateral rib 16B, respectively. The distal end portion of each lock bar 40 is inserted inside the cover wall 19, while the proximal end portion of each lock bar 40 is received inside the operation portion cover 42 through the dividing portion 13 </ b> A of the handle side rib 13, and the operation member 41. Cam-coupled to. Then, in conjunction with the movement of the operation member 41 between the locked position and the unlocked position, the lock bar 40 moves linearly in the lateral direction of the first side wall 11, and the tip of each lock bar 40 is connected to the cover wall 19. The front end of each lock bar 40 moves between the lock position protruding outward from the end (see FIG. 5) and the lock release position retracted toward the cover wall 19 as compared with the lock position. Moreover, in this embodiment, the part which protrudes from the cover wall 19 in the lock position among the lock bars 40 is the lock engaging part 40T.

  The lock engaging portion 40T is provided with a sliding contact slope 40G (see FIG. 5) on the side facing the side protruding wall 22 side. The sliding contact slope 40G is inclined so as to be separated from the side protruding wall 22 toward the tip of the lock bar 40. As a result, when the first side wall 11 is rotated toward the side protruding walls 22, 22 of the second side walls 21, 21 in the standing posture, the sliding contact inclined surface 40 </ b> G of each lock engagement portion 40 </ b> T is formed on the second side wall 21. The sliding contact is made with the tip connecting portion 24B of the gate-shaped protrusion 24 (see FIG. 4). Then, the lock bar 40 once moves to the unlock position and then returns to the lock position, and the lock engagement portion 40T engages with the gate-shaped protrusion 24. Thereby, rotation from the standing posture of the 1st side wall 11 is controlled. When the operation member 41 is moved to the lock release position by operating the lock release operation unit 41S (that is, by operating the operation member 41 to be pushed down), the engagement between the lock engagement unit 40T and the portal protrusion 24 is performed. Is released, and the first side wall 11 can be rotated from the standing posture to the folded posture.

  As shown in FIG. 8, a finger hooking protrusion 44 is provided on the lower surface of the portion sandwiched between the handle side ribs 13, 13 of the intermediate lateral rib 16 </ b> B. The finger hooking protrusion 44 is disposed at a position away from the center of the pair of handle side ribs 13 and 13 on the lower surface of the intermediate lateral rib 16B, and extends in the lateral direction along the tip edge of the intermediate lateral rib 16B. Both ends of the strip are bent at right angles to the base end side of the intermediate lateral rib 16B. Thereby, for example, the index finger and the middle finger can be put on the finger hooking projection 44, and the operation member 41 can be easily pushed down with the thumb. Further, a pair of handle stopper portions 43S and 43S and a pair of triangular ribs 43 and 43 are provided on both sides of the finger hooking projection 44 in the portion sandwiched between the handle side ribs 13 and 13 in the intermediate lateral rib 16B. Is formed. The pair of handle stopper portions 43S and 43S are formed by chamfering the lower corner portion of the end of the intermediate lateral rib 16B, and a pair of arm portions 52 and 52 of the handle 50 described below are these handle stopper portions 43S and 43S. Is positioned in contact with. Further, the pair of triangular ribs 43, 43 has a structure in which the outer surface of the first side wall 11 is connected to the lower surface of the intermediate lateral rib 16B, and reinforces the pair of handle stopper portions 43S, 43S.

  As shown in FIG. 1, a handle 50 according to the present invention is provided between the handle side ribs 13, 13 on the first side wall 11. As shown in FIG. 6A, the handle 50 has a U shape in which the arm portions 52, 52 are extended upward from both end portions of the handle portion 51 extending in the lateral direction of the first side wall 11.

  The front side surface 50 </ b> F of the handle 50 is a flat surface over the entire handle portion 51 and the arm portions 52, 52. Further, as shown in FIG. 6B, the back side surface 50B of the handle 50 is a plane parallel to the front side surface 50F as a whole except for the lower end portion. 51 is the lower end guide surface 51S according to the present invention that approaches the front side surface 50F as it goes downward. Furthermore, the upper end surfaces of the arm portions 52, 52 are semicircular arc surfaces 52E. A plurality of lightweight holes 50A are recessed in the entire rear side surface 50B (including the lower end guide surface 51S).

  A pair of rotating shaft projections 53 and 53 protrude from the outer surfaces of the upper ends of the pair of arm portions 52 and 52 toward the side away from each other. The rotation shaft projection 53 is formed by forming a sliding contact guide surface 53G and a retaining projection 53T on a cylindrical portion 53A protruding from the outer surface of the upper end of the arm portion 52. Each pivot shaft protrusion 53 is arranged such that the outer peripheral surface of the columnar portion 53A is flush with the semicircular arc surface 52E of the arm portion 52 at the upper end portion of the arm portion 52 as shown in FIG. ing.

  The sliding contact guide surface 53G intersects the front end surface 53H of the columnar portion 53A at an intermediate position in the vertical direction of the columnar portion 53A, and is inclined obliquely upward as it approaches the arm portion 52 from the front end surface 53H. . Further, the end portion on the arm portion 52 side in the sliding contact guide surface 53G is gently curved and connected to the outer peripheral surface of the cylindrical portion 53A.

  The retaining protrusion 53T has a conical shape that gradually increases in diameter from the distal end surface 53H of the cylindrical portion 53A toward the arm portion 52 side and is partially cut off by the sliding contact guide surface 53G. The portion is chamfered to form a uniform outer diameter portion 53S. The sliding contact guide surface 53G described above extends to a position closer to the arm portion 52 than the retaining protrusion 53T (including the uniform outer diameter portion 53S).

  As shown in FIG. 8, the pair of handle side ribs 13 and 13 are formed with a pair of support holes 13B and 13B that rotatably receive the pair of rotation shaft protrusions 53 and 53 of the handle 50. Has been. Each support hole 13B is disposed in a portion of the handle side rib 13 sandwiched between the second and third sub-lateral ribs 17B, 17C, and has a circular shape slightly larger than the cylindrical portion 53A of the rotating shaft protrusion 53 described above. It has become. In the present embodiment, the second and third sub-lateral ribs 17B and 17C correspond to “reinforcing ribs” according to the present invention.

  Further, in the portion of the handle side rib 13 sandwiched between the second and third sub-lateral ribs 17B and 17C, the side away from the outer surface of the first side wall 11 from the support hole 13B is built on the opposite side to the handle 50. Thus, a support reinforcing portion 13D is formed. As shown in FIG. 9, a concentric arc surface 13 </ b> E that is slightly larger than the inner surface of the handle side rib 13 is formed in a portion of the support reinforcing portion 13 </ b> D that faces the handle side rib 13. Further, a chamfered slope 13C is formed by chamfering a corner portion on the handle 50 side at a tip end portion of the handle side rib 13 sandwiched between the second and third sub-lateral ribs 17B and 17C.

  To attach the handle 50 to the first side wall 11, the arm portion 52 is perpendicular to the outer surface of the first side wall 11, and the sliding contact guide surfaces 53G and 53G (see FIG. 6A) are paired with a pair of handle side ribs. What is necessary is just to press on the chamfering slopes 13C and 13C of 13,13. Then, the arm portions 52 and 52 are elastically deformed so as to narrow the space between the tip portions by the sliding contact, and are pushed between the pair of handle side ribs 13 and 13. At this time, since the central axis of each rotation shaft protrusion 53 is inclined with respect to the center axis of each support hole 13B, each rotation shaft protrusion 53 enters each support hole 13B from the retaining protrusion 53T side. Then, as the arm portions 52 and 52 are elastically restored, as shown in FIG. 10, the central axis of the rotation shaft protrusion 53 becomes parallel to the central axis of the handle side rib 13, and the retaining protrusion 53 T is fixed to the handle side rib 13. It will be in the state latched by the opening edge of. As a result, the handle 50 is rotatably supported by the first side wall 11.

  As shown in FIG. 11, the handle 50 that is rotatably supported as described above hangs down below the support hole 13 </ b> B by its own weight and overlaps the outer surface of the first side wall 11 as shown in FIG. 11. become. Further, when the handle 50 is pulled up with a hand, the handle 50 comes into contact with the finger-hanging protrusions 44 and 44 and is positioned at a position where the handle 50 protrudes obliquely upward from the outer surface of the first side wall 11 as shown in FIG. The

  The description regarding the structure of the folding container 10 of this embodiment is above. Next, functions and effects of this embodiment will be described. In the folding container 10 of the present embodiment, the handles 50 and 50 do not get in the way because they are not in use because they are overlapped with the outer surfaces of the first side walls 11 and 11 due to their own weight, as described above, unless they are handled. The handle 50 does not get in the way when the folding container 10 is changed from the assembled state to the folded state (see FIG. 3). Conversely, as shown in FIG. 13, in the process of changing the folding container 10 from the folded state to the assembled state, the first side wall 11 can be easily raised by using the handle 50. Further, since the handle 50 in the non-use state is protected by being accommodated between the pair of handle side ribs 13 and 13 protruding from the outer surface of the first side wall 11, the handle 50 is prevented from being damaged or deformed.

  Furthermore, since the lower end guide surface 51S is provided at the lower end portion of the handle 50, as shown in FIG. 11, between the lower end portion of the handle portion 51 of the handle 50 in the unused state and the outer surface of the first side wall 11. A gap that becomes narrower toward the top is formed. Thus, simply by inserting a hand into the gap from below, the handle 50 is rotated by sliding the lower end guide surface 51S of the handle 50 in contact with the hand, and the handle 50 can be easily changed from a non-use state to a use state. Can do.

  When the handle 50 is lifted and rotated, the handle 50 abuts against the handle stoppers 43S and 43S and is positioned at a position protruding obliquely upward from the outer surface of the first side wall 11 as shown in FIG. A space for turning a finger is secured between the handle portion 51 and the outer surface of the first side wall 11, and the handle portion 51 can be easily grasped. Thus, the lifting work of the folding container 10 can be easily performed using the handle 50. In addition, since the handle 50 is provided, it is not necessary to provide a through hole corresponding to the manual insertion hole of the conventional folding container in the first side wall 11, the strength of the folding container 10 is increased, and the hand contacts the load. Can be prevented. Further, the opening edges of the support holes 13B and 13B in both handle side ribs 13 and 13 that rotatably support the handle 50 are reinforced by the second and third sub-lateral ribs 17B and 17C. Support is stable. In addition, since the first side wall 11 is reinforced by the handle side ribs 13 and 13 and the second and third sub-lateral ribs 17B and 17C and is not easily deformed, the support of the handle 50 is also stabilized in this respect.

  By the way, as for the 1st side wall 11, the intermediate part of an up-down direction is hard to deform | transform than an upper end part. This is because the first side wall 11 is connected to the bottom wall 30 at the lower end and is restricted from being deformed in the inner and outer directions, and the upper end is not subject to such restriction. On the other hand, in this embodiment, since the handle 50 is attached not to the upper end portion of the first side wall 11 but to the intermediate portion in the vertical direction, the support of the handle 50 is stable also in this respect. In addition, since the handle 50 is disposed directly below the unlocking operation unit 41S, it is possible to prevent a situation where the folding container 10 is lifted up by accidentally placing a hand on the unlocking operation unit 41S, and the unlocking operation unit 41S. Deformation and misoperation are prevented.

[Second Embodiment]
This embodiment is shown in FIGS. 14 to 16, and the shape of the handle 60 and the rib shape around the handle 60 in the first side wall 11 are different from those of the first embodiment. Specifically, as shown in FIG. 16A, in the handle 60, a pair of first arm portions 62, 62 are opened obliquely laterally from both ends of the handle portion 61 extending in the lateral direction. Further, the pair of second arm parts 63, 63 extend from the upper ends of the first arm parts 62, 62 in a direction away from each other. A pair of rotating shaft protrusions 53, 53 having the same shape as that of the first embodiment are formed to protrude from the upper end portions of the distal end surfaces of the second arm portions 63, 63. Further, as shown in FIG. 16B, this handle 60 also has a front side surface 60F and a back side surface 60B which are parallel to each other, and a lower end portion of the back side surface 60B is a handle portion 61S.

  In the present embodiment, the second and third sub-lateral ribs 17B and 17C extend from the main side rib 14 to the second sub-vertical rib 18B on the left and right sides of the first side wall 11, and each second sub-vertical rib 18B. Among them, a support hole 13B, a support reinforcing portion 13D, and a chamfered slope 13C similar to those of the first embodiment are formed in a portion sandwiched between the second and third sub-lateral ribs 17B and 17C. A pair of rotation shaft protrusions 53 and 53 of the handle 60 are rotatably supported by the support holes 13B and 13B of the second sub vertical ribs 18B.

  Below the third sub horizontal rib 17C, a fourth sub horizontal rib 17D is provided in parallel therewith, and the lower end portion of the second sub vertical rib 18B is connected to the fourth sub horizontal rib 17D. . The fourth sub horizontal rib 17 </ b> D extends from the second sub vertical rib 18 </ b> B toward the lateral center of the first side wall 11 along the lower surface of the second arm portion 63 of the handle 60. Further, an inclined rib 70A extends obliquely downward from the tip of the fourth sub-lateral rib 17D so as to follow the side surface of the first arm portion 62 of the handle 60, and from the lower end of the inclined rib 70A to the lower end horizontal rib 16C. Vertical ribs 70B extend vertically downward. Further, in the present embodiment, the handle stopper portions 43S, 43S extend from the finger hooking projection 44 on the lower surface of the unlocking operation portion 41S to the second sub vertical ribs 18B, 18B, and both the second sub vertical ribs 18B. , 18B, a plurality of triangular ribs 43 are provided. Then, when the handle 60 of the handle 60 is pulled up with a hand, the handle stopper portions 43S, 43S or the triangular rib 43 group come into contact with the first or second arm portions 62, 63, as shown in FIG. Thus, the handle 60 is positioned at a position protruding obliquely upward from the first side wall 11.

  In the present embodiment, the pair of second sub-vertical ribs 18B and 18B, the fourth sub-lateral ribs 17D and 17D, and the inclined ribs 70A and 70A are used as “a pair of handle side ribs” according to the present invention. Is configured.

  According to the folding container 10V of this embodiment, the support of the handle 60 is more stable than the folding container 10 of the first embodiment. Specifically, the first side wall 11 is less likely to be deformed at a position closer to both sides than a central portion in the horizontal direction. This is because the first side wall 11 is connected to the second side walls 21 and 21 at both sides, and deformation in the inner and outer directions is restricted, and the intermediate part in the lateral direction is not restricted. On the other hand, in the folding container 10V of the present embodiment, the handle 60 is horizontally long and the rotation support portion is disposed near the end portion in the lateral direction of the first side wall 11, so that the support of the handle 60 is stable. To do.

[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various other than the following can be made without departing from the scope of the invention. It can be changed and implemented.

  (1) In the first embodiment, of the pair of first side walls 11, 11 and the pair of second side walls 21, 21, the pair of first side walls 11 that are folded first when being folded. 11, the handle 50 may be attached to the pair of second side walls 21, 21 to be folded later, or the handle may be attached to all four side walls.

  (2) Although the handle 50 of the first embodiment is in a non-use state in which the handle 50 is overlapped on the outer surface of the first side wall 11 by its own weight, the handle may be urged to a non-use state by an elastic member.

  (3) In the first embodiment, the second and third sub-lateral ribs 17B and 17C corresponding to the reinforcing ribs of the present invention are connected to the upper and lower sides of the handle side rib 13 with the support hole 13B interposed therebetween. However, the reinforcing rib of the present invention may be connected to only one of the handle side ribs on the upper side or the lower side of the support hole.

  (4) The folding container 10 of the first embodiment has a configuration in which the first side walls 11 and 11 and the second side walls 21 and 21 are folded without overlapping, but the first side walls or The present invention may be applied to a folding container in which the second side walls are folded and overlapped.

  (5) In the folding container 10 of the first embodiment, the lock bars 40, 40 engage the portal protrusions 24, 24 from the lateral direction to engage the first and second side walls 11, 21. However, by operating the lock release operation portion 41S, the lock bars 40, 40 are configured to move directly to the center in the lateral direction to be disengaged. For example, instead of the gate-shaped protrusion 24, a downward hook-shaped engaged portion is provided on the second side wall, and a lock bar is formed integrally with the operation member so that the engaged portion is viewed from below. The engagement may be released by moving the lock bar downward by operating the operation member. As shown in FIG. 17, a flexible piece 80 is provided at the lateral end of the second side wall 21 </ b> W, and the lock protrusion 81 provided at the tip of the flexible piece 80 is opposite to the side protruding wall 22. The lock bar 40W is locked by engaging with the side edge portion 90 of the first side wall 11W to lock the first side wall 11W in the standing posture and operating the unlocking operation portion of the first side wall 11W. The protrusion 81 may be pressed outward to disengage the side edge 90.

10, 10V folding container 11 first side wall 13 handle side rib 13B support hole 17B second sub-lateral rib (reinforcing rib)
17C 3rd sub horizontal rib (reinforcement rib)
21 2nd side wall 24 Portal-shaped protrusion (engaged part)
40T Lock engagement portion 41S Unlock operation portion 50, 60 Handle 53 Rotating shaft protrusion 70A Inclined rib

Claims (5)

Side walls are pivotally connected to the respective outer edge portions of the rectangular bottom wall, the assembled state in which the side walls stand up from the bottom wall, and a pair of opposing side walls are overlapped on the bottom wall and folded. In the folding container that can be changed to the folded state in which the other pair of side walls are folded on the side walls,
An upper end portion is rotatably attached to the side wall, and a handle that can be changed between a non-use state superimposed on an outer surface of the side wall and a use state raised from the outer surface of the side wall is provided. Folding container.   2. The folding container according to claim 1, further comprising a pair of handle side ribs protruding from an outer surface of the side wall and positioned on both sides of the handle to receive the unused handle in between. . A pair of pivot shaft protrusions projecting on both sides from the upper end of the handle;
A pair of support holes formed in the pair of handle side ribs and rotatably receiving the pair of pivot shaft protrusions;
A pair of reinforcing ribs protruding from the outer surface of the side wall and extending from the opening edge of the pair of support holes to the opposite side of the handle, of the pair of handle side ribs. The folding container according to claim 2. The side walls adjacent in the assembled state are configured to engage with each other,
On the outer surface of the pair of side walls that are folded first from the assembled state, a lock release operation part for releasing the engagement between the side walls is provided at the center in the lateral direction of the upper end part,
The folding container according to any one of claims 1 to 3, wherein the handle is disposed directly below each of the unlocking operation portions.   5. The fold according to claim 1, wherein a lower end guide surface is formed at a lower end portion of the handle, the lower end guide surface being inclined downwardly as the distance from the outer surface of the side wall increases. Tatami container.

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