JP2009126519A - Folding container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a folding container which does not erroneously project a locking member to the locking side when it is assembled into a box shape, is easily assembled and can keep a locking condition even when a stored article is heavy and a bottom plate is bent. <P>SOLUTION: The locking member 10 is fitted to a side plate 9 for raising and laying down so as to be freely slidable in the horizontal direction and freely projectable from the side end face. Under an assembled condition into the box shape, the tip part of the locking member 10 is projected from the side end face of the side plate 9 for raising and laying down to be freely inserted into a recessed part 11 for locking. There is provided an operating part 12 for performing an operation for projecting the locking member 10 in the outside direction from the side end face of the side plate 9 for raising and laying down, and an operation for retreating it so as not to project it from the side end face of the side plate 9 for raising and laying down. Among the operating parts 12, an operating part 12a for releasing locking for moving the locking member 10 in the locking releasing direction is exposed only on the inner face side of the side plate 9 for raising and laying down under a condition that at least the tip part of the locking member 10 is inserted into a recessed part 11 for locking provided on a side plate 4 for folding. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a folding container, and more particularly to a technique for locking a raising / lowering side plate in the folding container.

  Conventionally, a rectangular bottom plate, a rectangular frame-shaped mouth frame disposed above the bottom plate, folding side plates disposed on both sides between the bottom plate and the mouth frame, and both ends between the bottom plate and the mouth frame. And a side plate for raising and lowering, the upper end of the side plate for raising and lowering is rotatably connected to the mouth frame to make the side plate for raising and lowering freely, and the side plate for folding is made up of the upper side plate of the upper half and the lower half of the side plate It is composed of a lower plate and the upper end of the upper plate is rotatably connected to the mouth frame and the lower end of the lower plate is rotatably connected to the bottom plate, and the lower end of the upper plate and the upper end of the lower plate are connected rotatably. When assembling into a box shape, following the operation of bringing both folding side plates into an upright posture in which the upper plate and the lower plate are continuous, both the folding side plates are rotated and stood up. Next, the side for folding both sides following the operation of turning the side plates for both sides up from the standing position to the horizontal position Folding from the upright posture and the upper plate and the lower plate are continuous so as to overlap and the upper plate and the lower plate operation configured collapsed container is known as performed.

  However, in such a folding container, it can be turned by pushing the side plate for raising and lowering from the outside after assembling into a box shape, so even if it is stacked in multiple stages or with a lid, There is a risk that the items stored in the box may be lost or stolen.

  Therefore, in the folding container as described above, Patent Document 1 and Patent Document 2 have conventionally proposed to lock the side plate for raising so as not to be opened from the outside when assembled in a box shape. .

  The one disclosed in Patent Document 1 has a lock member attached to the inner surface side of the raising / lowering side plate so that the lower end part can protrude downward from the raising / lowering side plate. Is configured so that it can be moved up and down only by operation from the inner surface side of the side plate for raising and lowering, while the folding container is assembled in a box shape, the lock member is operated on the inner side of the side plate for raising and lowering. Move downward, lock from the inside by fitting the lower end of the locking member into the upper locking recess provided on the upper side of the short side of the convex edge provided on the outer periphery of the upper surface of the bottom plate, When releasing the lock, the lock is released by performing an operation of moving the lock member upward on the inner surface side of the raising and lowering side plate.

  However, in the conventional example shown in Patent Document 1, when the folding container is assembled and operated by manually pushing the inner side of the raising and lowering side plate and turning it, the lock member is erroneously applied with an external force. There is a risk of an erroneous operation of turning the member with the lower end of the member protruding from the lower end of the side plate for raising. In such a case, the tip of the lock member protrudes from the lower end of the side plate for raising. Therefore, if this collides with the convex edge on the short side of the bottom plate, the side plate for raising will be in the normal standing posture (that is, the standing posture in which the lower end surface of the side plate for raising is placed on the upper surface of the convex edge). There is a problem that the box cannot be assembled and the assembly work has to be re-executed.Furthermore, since the tip of the lock member protrudes from the lower end of the side plate for raising and lowering, this is a convex edge on the short side of the bottom plate In order to collide It may damage the members. In addition, in Patent Document 1, when a heavy storage item is stored in a folding container assembled in a box shape, the bottom plate bends downward, and the tip of the lock member comes out of the locking recess opened upward. The lock may be released.

  Further, in the conventional example shown in Patent Document 2, the side plate of the lower side plate of the folding side plate is provided with holes whose both ends are open on the inner surface and the outer surface, and a lock rod is movably fitted into the hole, A lock hole consisting of a through hole is provided at the side edge of the outer surface of the side plate for use. When not locked, the rear end of the lock rod protrudes from the outer surface of the lower plate and the tip protrudes from the inner surface of the lower plate. When locking, the folded container is assembled and the rear end protruding from the lower plate of the lock bar is pushed to lock the front end of the lock bar into the lock hole.

However, in Patent Document 2, when the rear end of the lock rod is accidentally pushed during assembly and the front end of the lock rod protrudes from the inner surface of the lower plate, the folding side plate is raised after being raised. When turning the side plate for standing upright, the side end of the side plate for raising collides with the tip of the lock rod protruding from the inner surface of the lower side plate, so that the side plate for raising is brought into a normal standing posture. In other words, the assembly work must be performed again, and the lock rod is damaged by the impact.
JP 2006-103694 A Japanese Utility Model Publication No. 4-14350

  The present invention has been invented in view of the above-mentioned conventional problems, and there is no risk that the lock member may be accidentally protruded to the lock side when assembling into a box shape. It is an object of the present invention to provide a folding container that can be securely locked so that the locked state can be maintained even if the bottom plate bends to prevent loss or theft of stored items and that can be easily locked. It is.

  In order to solve the above problems, a folding container according to the present invention includes a rectangular bottom plate 2, a rectangular frame-shaped mouth frame 3 disposed above the bottom plate 2, and both sides between the bottom plate 2 and the mouth frame 3. The folding side plate 4 is disposed, and the raising and lowering side plates 9 are disposed at both ends between the bottom plate 2 and the mouth frame 3, and the upper end of the raising and lowering side plate 9 is rotatably connected to the mouth frame 3. The raising / lowering side plate 9 is made to be able to rise and fall, and the folding side plate 4 is composed of an upper half upper plate 5 and a lower half lower plate 6, and the upper end of the upper plate 5 is rotatably connected to the mouth frame 3. When the lower end of the lower plate 6 is rotatably connected to the bottom plate 2, the lower end of the upper plate 5 and the upper end of the lower plate 6 are rotatably connected, and the side plates 4 for folding are connected to the upper plate 5 And the lower plate 6 are placed in a continuous standing posture, and then the both side plates 9 are turned upright. For the purpose of seeing, both the folding side plates 4 are moved from the standing posture where the upper plate 5 and the lower plate 6 are continued to the upper plate following the operation of rotating the both raising and lowering side plates 9 from the standing posture to the horizontal posture. In the folding container 1 configured to be folded so that the lower plate 6 and the lower plate 6 overlap each other, the lock member 10 is slidably attached to the upright side plate 9 in the lateral direction, and the end of the lock member 10 The side plate for raising and lowering can be moved outward from the side end surface of the side plate 9 for raising and lowering, and the side plate for raising and lowering is provided at a portion of the side end portion of the folding side plate 4 facing the side end surface of the side plate 9 for raising and lowering. A locking recess 11 that opens to the side end surface side of the 9 side is provided, and a locking recess 11 that opens to the inner surface side is provided at the side end portion of the inner surface of the folding side plate 4. On the side of the side plate 9 for raising and lowering It protrudes from the surface so that it can be freely fitted into the recess 11 for locking, and the lock member 10 is retracted so as not to protrude from the side end surface of the raising and lowering side plate 9 and the operation of projecting the locking member 10 outward from the side end surface of the raising and lowering side plate 9 An unlocking unit is provided for performing an operation to move the lock member 10 in the unlocking direction in a state where at least the distal end portion of the lock member 10 is fitted in the recess 11 for locking. The operation section 12a is exposed only on the inner surface side of the raising and lowering side plate 9.

  By adopting such a configuration, the folding side plate 9 cannot be opened from the outside by fitting the distal end portion of the locking member 10 into the locking concave portion 11 in a state where the folding container 1 is assembled in a box shape. In this case, since the unlocking operation portion 12a is exposed only on the inner surface side of the raising and lowering side plate 9, the unlocking operation cannot be performed from the outside of the folding container 1, and the inside of the folding container 1 It is possible to prevent loss or theft of the items stored in the box. In addition, in this way, when the folding container 1 is assembled into a box shape, the hand touches the operation portion 12 of the lock member 10 in order to lock the lock member 10 in the locking direction. Even if an external force is applied to the folding side plate 4, the folding side plate 4 rotates while the both ends of the folding side plate 9 are in contact with the inner surfaces of the folding side plates 4, following the operation of bringing the folding side plate 4 into the standing posture. For this reason, the lock member 10 is prevented from accidentally jumping out of the side end surface of the raising / lowering side plate 9 by the inner surface of the folding side plate 4. If it is in a normal standing position, it cannot be operated so as to protrude unless it is in a position facing the locking recess 11, and as a result, the tip of the locking member 10 protrudes accidentally during the assembly operation. Without occurrence are can not assemble into a box shape Te, assembling work of the box-shaped is simplified, also, the tip portion of the locking member 10 is not damaged. Further, since the lock member 10 moves in the lateral direction and is fitted into the lock recess 11 to be locked, even if the stored item is heavy and the bottom plate 2 is bent, the lock is not released, and the lock can be surely made. it can.

  Further, the locking member 10 is attached to the inner surface side of the raising / lowering side plate 9 so as to be movable in the lateral direction, and when a part of the locking member 10 is moved in the direction opposite to the locking direction, the raising / lowering side plate 9 is moved. The lock member 10 is configured to be exposed from the outer opening 13 provided on the outer surface side of the lock, and the lock member 10 is a lock outer operation portion 12c that can be moved in the lock direction by an operation from the outer surface side of the raising and lowering side plate 9. It is preferable that the lock outer operation portion 12c is inserted into the outer opening 13 of the raising / lowering side plate 9 in a state where the distal end portion of the member 10 is fitted in the locking recess 11.

  With such a configuration, the locking operation can be performed from the outside of the folding container 1. For example, when the storage container is put in a locked state, or when it is not stacked in multiple stages Even when it is difficult to lock by putting your hand inside the folding container 1 or when you cannot lock it from the inside, such as when trying to lock it, you can easily perform the locking operation from the outside. Can confirm whether it is locked or not.

  In addition, a lock member housing portion 14 is provided on the inner surface side of the raising and lowering side plate 9 so that the lock member 10 is movably installed in the lateral direction, and either one of the lock member housing portion 14 and the lock member 10 has a lock member. It is preferable to provide a guide groove portion 15 which is long in the moving direction 10 and a guide rib 16 which is long in the moving direction is provided on one of the other, and the guide rib 16 is slidably fitted into the guide groove portion 15.

  With such a configuration, the locking member 10 can be smoothly and laterally slid by being guided by the fitting of the guide rib 16 and the guide groove 15, and the locking member 10 can be accurately moved in the lateral direction. Thus, the locking recess 11 can be securely fitted and locked.

  Further, the side end locking portion provided on the side plate 9 for raising and lowering in the state of being assembled into a box shape can be locked to the side end locked portion provided on the side end portion of the folding side plate 4, and the lock member 10 is It is preferable to provide near the said side edge latching | locking part or the baseplate 2. FIG.

  By setting it as such a structure, the lock member 10 can be reliably locked to the recessed part 11 for a lock without a deformation | transformation.

  Since the invention according to claim 1 of the present invention is configured as described above, when the box is assembled, a phenomenon that the tip of the lock member jumps out and cannot be assembled into a box shape occurs. Even though the lock member is provided so as to protrude freely, the lock member is not damaged and can be easily and reliably assembled into a box shape, and the lock member moves laterally and is fitted into the lock recess. Therefore, even if the stored item is heavy and the bottom plate bends, it can be securely locked so that the locked state can be maintained, and furthermore, the unlocking operation part is exposed only on the inner surface side of the raising side plate. Therefore, the unlocking operation cannot be performed from the outside of the folding container, and it is possible to reliably prevent the stored items stored in the folding container from being lost or stolen.

  In the invention described in claim 2 of the present invention, in addition to the effect of the invention described in claim 1 above, the lock operation can be performed only from the inside of the folding container as described above. The lock operation can be performed from the outside of the folding container, the lock operation can be easily performed from the outside, and it can be confirmed from the outside by visual recognition.

  In the invention according to claim 3 of the present invention, in addition to the effect of the invention according to claim 1 or 2, the lock member can be smoothly slid in the lateral direction without rattling. Can be moved in the lateral direction accurately and securely fitted into the locking recess for locking.

  In the invention described in claim 4 of the present invention, in addition to the effect of the invention described in claim 1 or claim 2, the lock member can be reliably locked in the recess for locking without deformation.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  1 to 12 show an embodiment of the folding container 1 of the present invention. As shown in FIGS. 1 to 3, the folding container 1 includes a rectangular bottom plate 2 formed of synthetic resin, a rectangular frame-shaped mouth frame 3 formed of synthetic resin disposed above the bottom plate 2, and a bottom plate 2. The folding side plate 4 disposed between the pair of opposing sides and the pair of opposing sides of the mouth frame 3, the other pair of opposing sides of the bottom plate 2, and the other pair of opposing sides of the mouth frame 3 And a side plate 9 for raising / lowering formed of a synthetic resin, respectively.

  The upper end of the raising / lowering side plate 9 is pivotably connected to the mouth frame 3 by a shaft support portion, so that the raising / lowering side plate 9 can be raised and lowered. The folding side plate 4 is composed of an upper half upper plate 5 made of synthetic resin and a lower half lower plate 6 made of synthetic resin, and includes a lower end of the upper plate 5 and an upper end of the lower plate 6. Are connected to each other by an intermediate shaft support portion 8 so that the folding side plate 4 can be folded inward at an intermediate portion in the vertical direction. The folding side plate 4 that can be folded at the intermediate portion is configured such that the upper end of the upper plate 5 is rotatably connected to the mouth frame 3, and the lower end of the lower plate 6 is rotatably connected to the bottom plate 2 by a pivotal support. The lower end of the side plate 5 and the upper end of the lower side plate 6 are rotatably connected by a shaft support portion.

  The mouth frame 3 is formed in a rectangular shape (in the illustrated embodiment, a rectangular shape). When two lid plates 7 made of synthetic resin that open and close the opening are pivotally attached to the upper surface of the mouth frame 3 by a shaft support portion as shown in FIGS. 1 to 3, and when the lid plate 7 is not provided (It is not shown in the figure). In addition, when providing the cover plate 7, the overlapping piece which mutually overlaps is provided in each front-end | tip of the two cover plates 7, and the uneven | corrugated engaging part which meshes | engages and engages with this overlap piece is each provided. Although not shown, a lid locking member may be provided so that the lid plate 7 can be locked to the mouth frame 3 by the lid locking member.

  In assembling the folding container 1 having the above configuration into a box shape as shown in FIGS. 1 to 3, first, the folding side plates 4 are placed in an upright posture in which the upper plate 5 and the lower plate 6 are continuous in the vertical direction. Then, the two side plates 9 are turned upside down, and the both side plates 9 are in an upright posture, so that the inner surfaces of both ends of the folding side plates 4 are In the meantime, the side plates 9 for raising and lowering are raised so that both end surfaces of the side plates 9 for raising and lowering are in contact with the inner surfaces of both ends of the side plates 4 for folding so that the side plates 4 for folding cannot be folded inward. In the state where both the side plates 9 for raising and lowering are in the standing posture, the side end locking portions (not shown) provided at the side end portions of the both side plates 9 for raising and lowering and the side end portions of the folding side plates 4 are provided. A side end latching part (not shown) is detachably latched, and a lower end member provided at the lower end part of the side plate 9 for raising and lowering. By holding the part (not shown) and the lower end locked part (not shown) provided on the bottom plate 2 in a detachable manner, the upright side plate 9 is kept upright and the folding side plate 4 is It connects with the side plate 9 for raising / lowering so that it may not bend outside.

  As described above, the locking between the side end locking portion and the side end locked portion locked in the state of being assembled into a box shape, and the locking between the lower end locking portion and the lower end locked portion are conventionally performed. Since this kind of folding container 1 is assembled in a box shape when it is assembled into a box shape, a locking means for maintaining the box shape is employed, and since this is generally performed conventionally, A specific configuration is omitted. The locking means is unlocked by rotating the raising and lowering side plate 9 by applying a predetermined or higher external force from the outside. Accordingly, the locking means is not a locking means for preventing the raising / lowering side plate 9 from rotating when the raising / lowering side plate 9 applies an external force from the outside.

  In this way, the stored items are stored in the folding container 1 assembled in a box shape. After that, in the case of the one having the cover plate 7, the cover plate 7 is rotated to cover it. If necessary, the lid plate 7 can be locked with a lid lock member (not shown) or can be bound with a binding band. These folding containers 1 can be stacked in multiple stages regardless of the presence or absence of the lid plate 7, the presence or absence of the lid locking member, or the binding container 1 not being bound by a binding band.

  Therefore, even when the stacked side plates 9 are closed or the lid plate 7 is closed, the rising side plate 9 rotates and opens when an external force of a predetermined level or more is applied from the outside. .

  Further, in order to fold the folded container 1 assembled in a box shape as shown in FIG. 1 to FIG. 3, the lid plate 7 is opened, and then both side plates 9 for raising and lowering are pushed from the outside and turned sideways. After that, both the folding side plates 4 are folded inward, and then the lid plate 7 is rotated to close the upper opening of the mouth frame 3 for folding.

  Here, in the present invention, in the state where the folding container 1 is assembled in a box shape, locking means for preventing rotation of the raising side plate 9 when the raising side plate 9 applies an external force from the outside. It is provided.

  That is, as shown in FIGS. 4 to 9, a lock member storage portion 14 is provided at a side end portion on the inner surface side of the raising / lowering side plate 9, and the lock member 10 is laterally disposed in the lock member storage portion 14. The folding side plate 4 (the lower side plate 6 in the illustrated embodiment) is provided with a recess 11 for locking that opens to the inner surface at the side end of the inner surface, and the lock member 10 is slid. Then, the tip end portion projects outwardly from the side end face of the raising / lowering side plate 9 and is fitted into the locking recess 11 to lock. In this locked state, the raising / lowering side plate 9 is attached to the outer side. Even if an external force is applied to rotate, the tip end portion of the lock member 10 is fitted in the locking recess 11 so that the side plate 9 for tilting cannot be rotated and opened.

  In the embodiment shown in the accompanying drawings, as shown in FIG. 10, a convex portion 17 whose inner surface side is recessed and whose outer surface side protrudes is integrally formed at the side end portion of the raising and lowering side plate 9. A lock member storage portion 14 is formed in a part of 17. The lock member storage portion 14 is mainly composed of a horizontally-oriented tubular portion 18 having a horizontally-oriented tubular shape (in the embodiment, a horizontally-oriented rectangular tube shape), and one end portion of the horizontally-oriented tubular portion 18 is formed on the side plate 9 for raising and lowering. It opens in one side piece part 19 of the convex curved part 17 used as a side end surface part, and becomes the opening part 20 for entrance / exit, and the window part 21 in the inner surface side of the side plate 9 for raising / lowering of the sideways cylindrical part 18 is provided. Is formed. Further, in the embodiment shown in FIG. 10, the other end portion of the horizontal tubular portion 18 is opened at the other side piece portion 22 of the convex curved portion 17 to be the outer opening 13. Further, in the embodiment shown in FIG. 10, a guide rib 16 that is elongated in the moving direction is formed at a position facing the window portion 21 on the inner surface of the horizontal tubular portion 18.

  As shown in FIG. 10, the upper and lower inner surfaces of the laterally facing cylindrical portion 18 are respectively provided with riding projections 23, and both lateral sides of the riding projections 23 are inclined surfaces 23a. Yes. Further, protruding stopper protrusions 24 are provided on the upper and lower inner surfaces of the laterally facing tubular portion 18 at positions shifted from the above-described protrusion 23 for the entrance / exit opening 20.

  Further, a receding side stopper portion 25 is provided on the inner surface of the inner surface of the sideways cylindrical portion 18 on the outer opening 13 side.

  The lock member 10 is as shown in FIGS. 11 and 12, and the lock portion 10 a protrudes from the tip portion, and an operation portion 12 for moving the lock member 10 is provided on the inner surface portion of the center portion. In the embodiment, a recess 26 opened on the inner surface side is formed, and the recess 26 serves as the operation unit 12 (the lock inner operation unit 12b and the lock release operation unit 12a). Further, a rear end protrusion 27 projects from the rear end portion of the lock member 10, and the rear end protrusion 27 serves as a lock outer operation portion 12 c constituting a part of the operation portion 12. In the present embodiment, the operation unit 12 includes a lock inner operation unit 12b that performs a lock operation from the inside, a lock release operation unit 12a that performs a lock operation from the inside, and a lock outer operation unit 12c that performs a lock operation from the outside. It is.

  In addition, elastic locking portions 28 having elasticity are provided on both the upper and lower surfaces of the lock member 10, and the protruding-side stopper portion 29 a and the retreating position are moved backward from the elastic locking portions 28 of the lock member 10. A stoppered portion 29 provided with a side stopper portion 29b is projected.

  In the present embodiment, as shown in FIG. 12, a guide groove portion 15 that is elongated in the moving direction of the lock member 10 is formed on the outer surface side of the lock member 10.

  The lock member 10 having the above-described configuration is slidably fitted into the horizontal cylindrical portion 18 that is the lock member storage portion 14, and the lock portion 10a is fitted to the entrance / exit opening 20 so as to protrude outward. A rear end protrusion 27 serving as a lock outer operation portion 12c is fitted to the outside opening 13 so as to protrude outside while being along the outer surface of the raising and lowering side plate 9, and the guide rib 16 is slidable in the guide groove portion 15. It is inserted in.

  The lock member 10 has a rear end protrusion that serves as the lock outer operation portion 12c when the lock portion 10a is retracted into the access opening 20 (the lock portion 10a does not protrude from the side end surface of the raising / lowering side plate 9). 27 is exposed to the outside through the outer opening 13 along the outer surface of the raising / lowering side plate 9, while the lock portion 10a protrudes outward from the entrance / exit opening 20 (the locking portion 10a is exposed to the raising / lowering side plate). 9 is a state in which the rear end protrusion 27 is retracted into the outer opening 13 and is retracted to a position flush with or recessed from the outer opening 13. Further, when the lock portion 10a is in the maximum projecting state, the projecting side stopper portion 29a hits the projecting side stopper projection 24 so as not to project further. In this state, the elastic locking portion 28 moves over the ride-on protrusion 23 while being elastically displaced and is positioned closer to the entrance / exit opening 20 than the protrusion-side stopper protrusion 24, so that the lock member 10 can be operated even when vibrations or the like are applied. Is not to inadvertently retreat.

  Further, in a state where the lock portion 10a is retracted into the entrance / exit opening 20, the retracted-side stopper portion 29b hits the retracting-side stopper portion 25 so that it is not retracted any further. In this state, the elastic locking portion 28 elastically displaces and climbs over the protrusion 23 in the opposite direction and is positioned on the outer opening 13 side, so that the lock member 10 is inadvertently operated even if vibrations are applied. It does not move in the protruding direction.

  Note that the positions of the protruding-side stopper portion 29a and the backward-side stopper portion 29b may be reversed, and the positioning and holding of the protruding state and the backward state may be performed in other fixing directions.

  Further, in the embodiment shown in the accompanying drawings, the lock outer operation portion 12c protrudes from the outer opening 13 provided on the outer surface side of the raising side plate 9 when the lock member 10 is moved in the direction opposite to the lock direction. As shown in the example, the outer opening 13 is formed outside the raising / lowering side plate 9, and the outer opening in which the side surface of the locking outer operation portion 12 c opens outside the raising / lowering side plate 9 in the unlocked state. The locked state that is located and exposed in the portion 13 and is slid and retracted is configured not to be exposed in the outer opening 13, and the side surface of the locking outer operation portion 12 c is located in the outer opening 13. In the unlocked state that is exposed, the locking operation can be performed by sliding the side surface of the locking outer operation portion 12c while pressing the side of the finger with the back of the finger or a stick. When the locking operation is completed, the outer opening portion 13 is exposed. Not It may not be able to unlock operated from the outside in.

  In order to configure the locking recess 11 formed on the side end of the inner surface of the folding side plate 4, in the embodiment, the side plate of the lower plate 6 is integrally formed with a convex portion 30 whose inner surface is recessed and whose outer surface protrudes. The locking concave portion 11 that opens to the inside is formed by forming a horizontal rib 31 that is formed and provided on a part of the inner surface side of the convex curved portion 30 so as to face the upper and lower sides. The lateral rib 31 may also be used as the side end locking portion. In this case, the structure is simplified. The convex portion 30 is designed so that it does not hurt even when the strength is increased or dust accumulates or is touched.

  And in the state which assembled the folding container 1 of the said structure in the box shape as mentioned above, when the raising side plate 9 applies external force from the outside, it locks so that the raising side plate 9 cannot rotate. At this time, a hand is put in the folding container 1 assembled into a box shape and a finger is put in the inner operation portion 12b for locking to slide the locking member 10, or the outer side for locking from the outside of the folding container 1 By sliding the lock member 10 by placing the finger on the operation portion 12c and pushing it, the lock portion 10a at the tip of the lock member 10 is moved from the side end surface of the side plate 9 for raising / lowering as shown in FIGS. It is made to project and is fitted into the locking recess 11 and locked.

  In the embodiment shown in the accompanying drawings, the protruding tip surface of the lock outer operation portion 12c is an inclined surface, so that the area pressed by a finger is widened and the operability is improved. In addition, the operability is improved by providing finger hooking irregularities on the protruding front end surface of the lock outer operation portion 12c so that the finger does not slip. In this way, when the protruding front end surface of the locking outer operation portion 12 c is an inclined surface, the other side piece portion 22 provided with the outer opening 13 of the convex curved portion 17 is tilted as it moves away from the side end of the tilting side plate 9. The outer side plate 9 is inclined so as to approach the inner surface side, and when the outer locking operation portion 12c is immersed in the outer opening 13, the outer side operation for locking can be performed from outside. The lock member 10 cannot be moved in the unlocking direction by operating the portion 12c. That is, only the lock operation can be performed from the outside in the lock outer operation portion 12c.

  Further, the outer opening 13 has a cylindrical shape, and is configured such that the outer locking operation portion 12c slides with the cylindrical inner surface portion of the outer opening 13 as a sliding surface, and the outer locking operation portion 12c. When the head is immersed in the outer opening 13, the distal end portion of the locking outer operation portion 12 c is located at a portion surrounded by the cylindrical sliding surface of the outer opening 13. Therefore, when the lock outer operation portion 12c slides, it can slide smoothly without causing a phenomenon that it cannot hit the edge of the outer opening 13 and cannot slide.

  As described above, in the present embodiment, since the sliding operation to the locking side of the locking member 10 can be performed from either the inside or the outside of the folding container 1 when locking, the locking operation from the inside or the outside can be performed depending on the situation. The lock operation can be selected.

  For example, when the hand is put in the folding container 1 for storing the stored item immediately before the operation of storing the stored item in the folding container 1, during the storing operation, or immediately after the storing. Or, when the outer surface side of the side plate 9 for raising / lowering is blocked by other objects, etc., the user can put the hand into the folding container 1 and operate the lock inner operation portion 12b to lock it. Easy lock operation.

  In addition, when you want to lock the storage container in the state where you want to lock it later, or when you want to lock it in a stacked state, if you put your hand inside the folding container 1 and it is difficult to lock it, or you can lock it from the inside. In such a case, the lock operation can be easily performed by operating the lock outer operation portion 12c from the outside to lock. And even if you forget to lock, you can check from outside and lock at that point.

  On the other hand, when performing the unlocking operation, by putting a hand inside the folding container 1 and operating the locking inner operation part 12b exposed on the inner surface side of the raising and lowering side plate 9, the locking operation is performed from the inside. The lock can be released as shown in FIGS.

  In the present invention, since the unlocking operation can be performed only from the inside in this way, in the locked state, the tampering and unlocking cannot be performed from the outside. Loss or theft of stored items stored in the folding container 1 due to movement can be prevented.

  Further, the lock member 10 is movable in the lateral direction, and the lock portion 10a that protrudes by moving in the lateral direction is fitted into the locking recess 11 that opens in the lateral direction on the inner surface side. Even if the stored item is stored and the bottom plate 2 is bent, the lock does not come off and can be reliably locked.

  Since the sliding direction of the lock member 10 is opposite to the vertical vibration of the track or the like, the lock member is not released. In addition, since the raising and lowering side plate 9 is assembled and released by hand, the cylindrical portion 18 is formed so as not to come off at that time.

  By the way, when assembling into the box shape of the folding container 1, as described above, the two side plates 4 are first placed in an upright posture in which the upper side plate 5 and the lower side plate 6 are continuous in the vertical direction, This is followed by an operation of rotating and raising both side plates 9 for raising and lowering.

  When performing the operation of assembling into such a box shape, in the present invention, as described above, the lock member 10 is provided so that the lock portion 10a at the tip portion can protrude from the side end of the side plate 9 for raising and lowering. Regardless of this, when the turning side plate 9 is turned by placing the hand inside the raising side plate 9 so that the raising side plate 9 is in the standing posture, the hand touches the operation portion 12 of the lock member 10 to lock it. Even when an external force that moves the member 10 in the locking direction is applied, the side member end surface 9 of the raising / lowering side plate 9 rotates so as to contact the inner surface of the side plate 4 for folding. Even if an attempt is made to jump out from the side end face of the side plate 9, the inner side of the folding side plate 4 is prevented from jumping out. Therefore, the raising / lowering side plate 9 can be reliably rotated so as to be in a normal standing posture, and the tip end portion of the locking member 10 protrudes by mistake during the assembling operation and cannot be assembled into a box shape. As a result, the assembly work into the box shape is simplified, and the tip of the lock member 10 is not damaged.

  In addition, the folding side plate 9 in the folded state in the folded state in the folded state is housed in the mouth frame 3, and the inner surface of the raising side plate 9 is slightly spaced from the inner surface of the mouth frame 3. Will face each other. Therefore, even in this folded state, even if an external force that erroneously moves the lock member 10 to the lock side is applied, there is no possibility that the front end portion of the lock member 10 protrudes due to being blocked by the inner surface of the mouth frame 3.

  Thus, in the present invention, when the side plate 9 for raising / lowering is in the normal standing posture, that is, when the position is not opposite to the front end portion of the lock member 10 and the recess 11 for locking, the locking operation is performed so as to protrude. The lock member 10 is not accidentally protruded during the folding operation in the folded state, during the assembly in the box shape, or during the folding operation.

  In the above embodiment, the guide rib 16 and the guide groove portion 15 are provided, and the locking member 10 is smoothly and laterally slid to move the locking member 10 accurately in the lateral direction, thereby locking the recess. 11 can be securely fitted and locked. In the above embodiment, the guide groove portion 15 is provided on the lock member 10 side and the guide rib 16 is provided on the lock member storage portion 14 side. However, the guide rib 16 is provided on the lock member 10 side, and the guide groove portion is on the lock member storage portion 14 side. 15 may be provided.

  Moreover, the case where the guide rib 16 and the guide groove part 15 are not provided may be sufficient.

  Next, another embodiment of the present invention will be described with reference to FIGS. In the above-described embodiment, the outer opening 13 is provided at the other end portion of the horizontal tubular portion 18 constituting the lock member storage portion 14, and the rear end protrusion serving as the lock outer operation portion 12c is provided at the rear end portion of the lock member 10. The rear end protrusion 27 is protruded from the outer opening 13 to the outer surface side of the raising side plate 9 in an unlocked state and exposed, and can be operated from the outside of the folding container 1 during the locking operation. However, in the present embodiment shown in FIGS. 13 to 20, the lock member 10 can be operated only on the inner surface side of the raising and lowering side plate 9 for both the lock operation and the unlock operation, and cannot be operated from the outer surface side. There is a feature in the point. That is, this embodiment differs from the above-described embodiment in that the outer opening 13 and the rear end protrusion 27 serving as the lock outer operation portion 12c are not provided, and the other basic configuration is the same as that of the above-described embodiment. Since it is the same, description is abbreviate | omitted. Also in the present embodiment, the guide groove portion 15 and the guide rib 16 may be provided so that the lock member 10 can slide more smoothly and accurately.

  In the present embodiment, the lock member 10 is configured so that both the lock operation and the unlock operation can be operated only on the inner surface side of the raising and lowering side plate 9, so that the outer opening 13 and the lock member are locked as in the previous embodiment. The rear end protrusion 27 serving as the outer operation portion 12c is not exposed to the outer surface side of the raising side plate 9, the presence of the lock member 10 is not visible from the outside, and the appearance is improved.

It is a perspective view of the state which assembled the folding container of this invention in the box shape. It is a side view of the state which assembled the folding container same as the box shape. It is sectional drawing same as the above. It is the perspective view seen from the inner surface side of the state which fitted the front-end | tip part of the lock member in the recessed part for a lock | rock in the state which assembled the folding container same as the above. It is the perspective view seen from the outer surface side at the time of a lock | rock in the state which assembled the folding container same as the box shape. It is sectional drawing of a locked state same as the above. It is the perspective view seen from the inner surface side of the state (or the state which cancel | released lock | rock) before fitting the front-end | tip part of a lock member in the recessed part for a lock | rock in the state which assembled the folding container same as the above. It is the perspective view seen from the outer surface side at the time of a lock | rock in the state which assembled the folding container same as the box shape. It is sectional drawing of a lock release state same as the above. It is the perspective view seen from the inner surface side of the lock member accommodating part of the side plate for raising used for the same as the above. It is the perspective view seen from the inner surface side of the lock member used for the same as the above. It is the perspective view seen from the outer surface side of the lock member used for the same as the above. It is a perspective view of the state which assembled the folding container of other embodiment of this invention in the box shape. It is a side view of the state which assembled the folding container same as the box shape. It is the perspective view seen from the inner surface side of the state which fitted the front-end | tip part of the lock member in the recessed part for a lock | rock in the state which assembled the folding container same as the above. It is sectional drawing of a locked state same as the above. It is the perspective view seen from the inner surface side of the state (or the state which cancel | released lock | rock) before fitting the front-end | tip part of a lock member in the recessed part for a lock | rock in the state which assembled the folding container same as the above. It is sectional drawing of a lock release state same as the above. It is the perspective view seen from the inner surface side of the lock member accommodating part of the side plate for raising used for the same as the above. It is the perspective view seen from the outer surface side of the lock member used for the same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Folding container 2 Bottom plate 3 Mouth frame 4 Folding side plate 5 Upper side plate 6 Lower side plate 9 Side plate for raising / lowering 10 Lock member 11 Recessed portion for locking 12 Operation portion 12a Operation portion for unlocking 12c Outer operation portion for locking 13 Outer opening 14 Lock Member storage 15 Guide groove 16 Guide rib

Claims (4)

A rectangular bottom plate, a rectangular frame-shaped mouth frame disposed above the bottom plate, a folding side plate disposed between a pair of opposite sides of the bottom plate and a pair of opposite sides of the mouth frame, and a bottom plate And a side plate for raising / lowering disposed between the other pair of opposing sides and the other pair of opposing sides of the mouth frame, and the upper end of the side plate for raising / lowering is rotatably connected to the mouth frame. The folding side plate is composed of an upper half upper plate and a lower half lower plate, the upper end of the upper plate is rotatably connected to the mouth frame, and the lower end of the lower plate is When connecting to the bottom plate and connecting the lower end of the upper plate and the upper end of the lower plate so as to be rotatable, and assembling into a box shape, the folding side plates are in an upright posture where the upper plate and the lower plate are continuous. Following the operation, the side plates for both raising and lowering are rotated to stand up, hitting the folding, both raising and lowering Following the operation of rotating the side plate from the standing posture to the horizontal posture, the folding side plate is folded from the standing posture where the upper plate and the lower plate are continuous so that the upper plate and the lower plate overlap each other. In a folding container configured as
The locking member is slidably attached to the side plate for raising and lowering so that the end of the locking member can be protruded outward from the side end surface of the side plate for raising and lowering, and the side plate for raising and lowering is assembled in a box shape. A side wall of the folding side plate facing the side end surface is provided with a locking recess that opens on the side end surface side of the side plate for raising and lowering, and the side plate for raising and lowering the tip of the lock member in a state of being assembled in a box shape An operation for projecting from the side end surface of the side plate so that it can be freely fitted into the recess for locking, and for projecting the lock member outward from the side end surface of the side plate for raising and lowering so as not to project from the side end surface of the side plate for raising and lowering An unlocking operation unit for moving and moving the lock member in the unlocking direction with at least the lock member tip portion fitted in the locking recess is provided for raising and lowering. Inner side of side plate Folding container, characterized in that it is exposed only.   A lock member is attached to the inner surface side of the raising / lowering side plate so as to be movable in the lateral direction, and a part of the locking member is provided on the outer surface side of the raising / lowering side plate when the locking member is moved in the direction opposite to the locking direction. The lock member is configured to be exposed from the opening so that the lock member can be moved in the lock direction by an operation from the outer surface side of the side plate for raising and lowering, and the distal end of the lock member is fitted in the recess for locking. The folding container according to claim 1, wherein the lock outer operation portion is configured to be immersed in the outer opening of the raising / lowering side plate in the locked state.   A lock member storage portion is provided on the inner surface side of the side plate for raising and lowering so that the lock member can be moved in the lateral direction, and either the lock member storage portion or the lock member is elongated in the moving direction of the lock member. The folding container according to claim 1 or 2, wherein a guide groove is provided and a guide rib that is elongated in the moving direction is provided on one of the other, and the guide rib is slidably fitted into the guide groove.   In the state assembled in the box shape, the side end locking portion provided on the side plate for raising and lowering can be locked to the side end locked portion provided on the side end portion of the folding side plate, and the locking member is locked on the side end. The folding container according to claim 1 or 2, wherein the folding container is provided near a portion or a bottom plate.

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