JP2009023669A - Assembling type synthetic resin-made container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a spring provided on the undersurface of an operating lever comes out of a horizontal rib on a side plate and does not function as the operating lever. <P>SOLUTION: This container comprises a bottom plate with a flat square shape and four side plates connected so as to be freely foldable along the side end edges of the bottom plate and operating levers which can be folded inside respectively by making opposing side plates as a pair and is movable up and down for releasing an engaging condition when assembled are fitted on a pair of opposing side plates. The operating lever is provided with engaging parts on both end parts of the operating part, and a spring for energizing the operating part upward is projected on the undersurface, and the lower end part of the spring is inserted into a guide channel provided on a horizontal rib. The guide channel may be formed by vertically projecting a guide plate on the outside of the upper face and by a gap formed between the guide plate and the outer face of the side plate, and also may be a channel formed on the upper face of the horizontal rib. The bottom face of the guide channel is preferably formed not into a horizontal face but partly into an inclined face or a curved face. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an assembling box in which a side plate is disposed on a bottom plate via a bent portion or a rotation shaft, and can be easily assembled from a folded state and can be easily folded. Further, the present invention relates to a structure for mounting an operation lever on a side plate configured to hold the assembled state by a vertically movable operation lever and to release the engagement state of the side plate by depressing the operation lever.

Conventionally, assembling-type synthetic resin containers are used for transporting agricultural products such as vegetables and fruits and various industrial products. Synthetic resin containers are excellent in durability and can be used repeatedly, and are frequently used in place of cardboard boxes from the viewpoint of resource saving that has been raised in recent years. Examples of such an assembly-type container include the following containers.

  The container disclosed in Japanese Patent Application Laid-Open No. 2004-75079 is provided with a rotating means for folding each side wall inward of the container body at the lower end portion of each side wall, and the first side wall is folded on the upper surface of the bottom wall. After that, by folding the second side wall to the upper surface of the first side wall, the container body is configured to be foldable, and the outer side surface of the first side wall has an operation portion and a substantially central portion on the outer side surface. Engaging members provided with slide engaging projections and engaging projections at both ends are attached, and the both end portions of the second side wall engage with the engaging projections to inward the first side wall. An engagement portion for restricting the rotation is provided, and the engagement portion between the engagement protrusion and the engagement portion is released by moving the operation portion of the engagement member up or down. .

  With this configuration, the folding operation can be performed more easily.

  Further, the container disclosed in Japanese Patent Application Laid-Open No. 2006-96401 is an assembly type synthetic resin container in which each side plate can be folded inward with a pair of opposing side plates, and is provided at both ends of the pair of side plates. A lock portion is formed by an operation lever provided and an engagement portion provided on the other pair of side plates, and the operation lever is cut out on three sides and is provided at the tip of a plate provided integrally with the side plate on the other side. It has a receiving part that receives the pressing protrusion of the unlocking member mounted on the pair of side plates and an engaging piece that engages with the engaging part, and the unlocking member has a finger-engaging recess in a substantially central part. The locking release member is formed on both ends and a spring is provided on the lower surface, and the unlocking member is assembled to the upper part of the pair of side plates so as to be movable up and down. .

By setting it as the said structure, a lock release member and a side plate can be automatically assembled with a machine, and the reduction of an assembly man-hour and expense can be aimed at. Further, since the left and right engaging portions of the unlocking member move up and down equally and in a balanced manner, assembly and folding as a container are easy.
JP 2004-75079 A (Claim 1) JP 2006-96401 A (Claim 1)

In the container disclosed in Japanese Patent Application Laid-Open No. 2004-75079, a pair of left and right urging plates are provided as urging means for urging the engaging member upward, and the urging plates are provided on the side walls. It is placed on the horizontal rib. In addition, in the container disclosed in JP 2006-96401 A,
A spring for applying a biasing force is provided on the lower surface of the unlocking member, and the spring is placed on a lateral rib protruding from the side plate.

  FIG. 7 shows a main part of a container unlocking member disclosed in Japanese Patent Application Laid-Open No. 2004-75079. That is, the unlocking member R is attached to the upper end portion of the side plate A on the short side, and the spring B protruding from the lower surface is placed on the lateral rib C. Engaging portions D are provided at both ends of the side plate on the short side, and the engaging portion D engages with the projecting portion E provided on the side plate on the long side, so that the locked state is maintained. Is done.

  In order to release the locked state of the protruding portion E and the engaging portion D from the assembled state, a locking lever F is formed integrally with the protruding portion E, and when the locking lever F is pushed down, the protruding portion E is also integrated. Therefore, the engagement state between the protrusion E and the engagement portion D is released. In order to push down the lock lever F, the locking projections G projecting at both ends of the lock release member R are inserted into the lock lever F, so that the finger hook recess H provided at the center of the lock release member R The lock release member R may be moved downward against the spring B by hooking a finger.

  As described above, in any of the containers described in both publications, the urging means is merely placed on the lateral rib. As shown by the alternate long and short dash line, the urging plate and the spring B are detached from the lateral rib C. When the urging plate or the spring B is detached from the lateral rib C, the urging force is released, so that the engaging member or the lock releasing member R does not return to the original position. If the unlocking member R does not return to the original position, the lock function does not work when assembled, the lock function cannot be released, and it cannot be used as an assembly-type container.

  The present invention has been made in view of the present situation, and is an assembly-type composition that can be used safely by maintaining the assembled state as a structure in which the spring protruding from the lower surface of the engaging member or the unlocking member is not removed. It is intended to provide a resin container.

In order to achieve the above object, the present invention is configured as follows. That is, the assembly type synthetic resin container according to the present invention comprises a flat rectangular bottom plate and four side plates connected to bendable along side edges of the bottom plate, and the side plates are opposed to each other. A pair of side plates that can be folded inward, and a pair of opposing side plates are assembly type synthetic resin containers to which an operation lever capable of moving up and down to release the engaged state when assembled is attached, The operating lever is provided with engaging portions at both ends of the operating portion, and a lower surface provided with a spring that is placed on a lateral rib provided on the side plate and biases the operating portion upward. The portion is formed so as to be inserted into a guide groove provided in the lateral rib.

  The guide groove may be formed by vertically projecting a guide plate on the outer surface of the lateral rib and formed by a gap formed between the guide plate and the outer surface of the side plate, or a groove formed on the upper surface of the lateral rib. It is good also as a structure which inserts the lower end part of a spring in the said groove | channel. The bottom surface of the guide groove may be formed on a horizontal plane, but a part thereof is preferably formed on an inclined surface or a curved surface.

  As is clear from the above description, the spring provided on the lower surface of the operation lever is guided outside, so that it does not come off even when an impact is applied, and the assembled state can be reliably maintained. Further, since the guide groove has a simple structure in which a guide plate is erected or a guide groove is formed, the mold does not have a complicated structure. Furthermore, since the tip of the spring is protected by the guide groove, the spring can be prevented from being damaged.

An outline of an assembly-type synthetic resin container according to the present invention will be described based on the illustrated embodiment. The assembly type synthetic resin container 10 includes a rectangular bottom plate 11 and four side plates 13, 13, 15, 15 disposed along the edge of the bottom plate 11. Of the four side plates, the side plate 13 forms an opposing short side plate, and the side plates 15 and 15 form an opposing long side plate. The side plate 13 and the side plate 15 are provided with rotating shafts 17, 1 provided at end edges of the bottom plate 11.
9 are pivotally attached to each other.

  Further, the side plate 13 and the side plate 15 are folded inward first with the pair of side plates on the one side, and the side plate with the other pair is folded from the rear side. In order to be able to fold, the position of the pivot axis of the side plate that is folded later is arranged at a position higher than the pivot axis of the side plate that is folded first.

  That is, in the embodiment of FIG. 1, the side plate that is folded first is the side plate 13 on the short side, the side plate that is folded later is the side plate 15 on the long side, and the side plate 15 on the long side that is folded later is rotated. The shaft 19 is disposed on the upper portion of the height adjusting unit 20. By the height adjusting unit 20, the side plate 15 on the long side that is folded later can be superimposed almost horizontally on the side plate 13 on the short side that is folded first.

  At both ends of the side plate 15 on the long side that is folded later, protruding portions 15a that protrude inward so as to be orthogonal to the side plate are provided. When the assembly-type synthetic resin container 10 is assembled, the outer surfaces of both end portions of the side plate 13 on the short side are joined to the inner surface of the projecting portion 15a, thereby preventing the side plate 13 from rotating outward. Further, as will be described later, the side plate 15 is provided with a protruding portion 15b so as to prevent the side plate 13 from falling inward, and the side plate 13 is provided with an engaging portion 25a that engages with the protruding portion 15b. It has been. A lock portion 23 is formed by the protruding portion 15a and the engaging portion 25a.

  An example of the configuration of the lock portion will be described. The lock portion 23 includes a projecting portion 15b provided at both end portions of the pair of side plates 15 on the long side, and an operation lever attached to the upper portion of the side plate 13 on the short side. 25 and engaging portions 25a at both ends. When the side plate 13 on the short side is assembled, the engaging portion 25a of the operation lever 25 abuts on the projecting portion 15b, and when the side plate 13 is further raised, the side plate 13 is pushed down below the projecting portion 15b and is placed on the back surface of the projecting portion 15b. The projecting portion 15b and the engaging portion 25a are engaged with each other when the engaging portion 25a returns to the upper side and is assembled in a locked state.

  Cutouts 27 are formed at both ends of the side plate 13 on the short side so that protrusions 15b provided on both side ends of the side plate 15 on the long side pass, and the operation lever 25 extends from the cutout 27. The engaging portion 25a is disposed so as to protrude. Therefore, when assembling, when the side plate 13 on the short side is raised, the engaging portion 25a of the operating lever 25 comes into contact with the protruding portion 15b and is pushed down, so that it turns around and engages with the protruding portion. In the engaged state, the protruding portion 15 b is fitted into the notch 27.

  Next, the configuration of the operation lever 25 will be described. The operation lever 25 has engaging portions 25a protruding from both ends of the operation portion 25b, and springs 25c and 25c for applying a biasing force to the lower surface. . The operation portion 25b is formed with a finger hanging concave portion 25d having a substantially central portion recessed. The spring 25c is formed in a substantially square shape with its lower end facing inward, and is provided between both end portions of the operation portion 25b and the finger hanging recess 25d.

  The lower end of the spring 25 c is inserted into the guide groove 30. As shown in FIGS. 1 to 3, the guide groove 30 has a guide plate 30 a vertically protruding outside the upper surface of the lateral rib 13 a provided on the outer surface of the side plate 13, and is formed between the concave surface of the side plate 13 and the guide plate 30 a. It is constituted by a gap 30b formed therebetween. The guide groove 30 is a feature of the present invention. The lower end of the spring 25c is placed on the upper surface of the lateral rib 13a and is inserted into the gap 30b.

  As described above, the lower end of the spring 25c is not only placed on the lateral rib 13a, but also guided by the guide plate 30a. There will be no inadvertent departure from 30. Further, when the finger is placed on the finger hanging recess 25d and the operating portion 25b is pushed down, the spring 25c is bent while the lower end slides on the lateral rib 13a, but slides smoothly by the guide plate 30a.

  FIG. 4 shows another embodiment of the guide groove 30, and the guide grooves 30 </ b> A and 30 </ b> B are configured by forming a groove 31 into which the lower end of the spring 25 c is inserted on the upper surface of the lateral rib 13 a. The insertion groove 31 has a depth that prevents the lower end of the spring 25c from being inadvertently removed, and is formed with a length sufficient for the lower end of the spring 25c to slide. The guide groove 30A in FIG. 4A is a flat groove 31a in which the groove bottom is formed horizontally, but the guide groove 30B in FIG. 4B is a curved groove 31b in which the groove bottom is formed in a curved surface or an inclined surface. Shows the case. When the groove bottom is formed in a curved surface or an inclined surface, when the operation portion 25b of the operation lever 25 is pushed down, the repulsive force of the spring 25c becomes strong, and the return of the operation portion 25b becomes smooth.

  5 and 6 show a pair of springs provided on the lower surface of the operating lever, and FIG. 5 shows a case where the springs 25c and 25c are formed in a substantially inverted C shape with the lower ends thereof facing inward. FIG. 6 shows a case where the lower ends of the springs 25c, 25c are formed in a substantially C shape with the outer side facing outward. In any case, since the configuration of the lock portion is the same as that shown in FIGS. 2 to 4, the same components are denoted by the same reference numerals and the description thereof is omitted.

  The feature of the present invention lies in the structure that prevents the spring from coming off from the lateral rib on which the spring provided on the lower surface of the operation lever 25 is placed. Therefore, the side plate on the long side and the side plate on the short side There is no particular limitation on the structure of the lock portion that holds the assembled state, and any structure can be adopted.

It is the front view which showed the short side of the container of an assembly state, the left half abbreviate | omitted a part, and the right half is sectional drawing which abbreviate | omitted the part which cut the side plate of the long side. It is a principal part front view which shows the spring and guide groove of an operation lever. It is XX sectional drawing in FIG. FIG. 4A shows another embodiment, and FIG. 4A is a front view of the main part of the guide groove in which the groove bottom is formed horizontally, and FIG. 4B is the main part of the guide groove in which the groove bottom is formed on a curved surface or an inclined surface. FIG. It is a front view at the time of making a spring into a reverse C shape. It is a front view at the time of making a spring into a square shape. It is a principal part front view which shows attachment of the conventional operation lever.

Explanation of symbols

10: Assembled plastic container
11: Square base plate
13: Short side plate 15: Long side plate
17, 19: Rotating shaft
20: Height adjustment part
21: Handle hole
23: Lock part
25: Operation lever
25a: engagement portion
25b: Operation unit
25c: Spring
25d: Recess for finger hook
27: Notch
30: Guide groove

Claims (5)

It consists of a planar rectangular bottom plate and four side plates that are connected to bendable along the side edge of the bottom plate, and each side plate can be folded inward with a pair of opposing side plates. A pair of side plates is an assembly type synthetic resin container in which an operation lever capable of moving up and down to release the engaged state when assembled is attached,
The operating lever is provided with engaging portions at both ends of the operating portion, and a lower surface provided with a spring that is placed on a lateral rib provided on the side plate and biases the operating portion upward. An assembly type synthetic resin container characterized in that the portion is formed so as to be inserted into a guide groove provided in the lateral rib.   2. The assembly type according to claim 1, wherein the guide groove is formed by a gap formed between the guide plate and the outer side surface of the side plate. Synthetic resin container.   The assembly type synthetic resin container according to claim 1, wherein the guide groove is a groove formed on an upper surface of the lateral rib, and a lower end portion of a spring is inserted into the groove.   The assembly type synthetic resin container according to any one of claims 1 to 3, wherein a bottom surface of the guide groove is a horizontal plane.   4. The assembly type synthetic resin container according to claim 1, wherein a part of the bottom surface of the guide groove is an inclined surface or a curved surface.

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