JP4577764B2 - Assembled plastic container - Google Patents

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 rotating shaft, and can be easily assembled from a folded state and can be easily folded. An assemblable synthetic resin container that can be stored and transported by folding the side plate connected to each side edge of the bottom plate via a bent portion or a rotating shaft inwardly toward the bottom plate and compactly folding the side plate. It is about.

  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. 2003-165536 is formed with a locking elastic piece that can be brought into contact with the side wall that is set up later on the side wall that is first set up from the folded state. In the left and right regions of the lock release member storage area formed on the outer wall surface, the operation unit is provided with a lock release member that includes a lock release body that presses the locking elastic piece and a lock release operation body having an operation unit. So that the operation state of the unlocking member is moved toward each other so as to release the locked state between the side wall first raised and the side wall raised later by one-touch operation. There is what I did.

  That is, the locking elastic piece is pressed by horizontally moving the unlocking operation body, the locking elastic piece is pushed outward, and the locked state with the overhanging frame provided on the side wall that is set up later is released. It is a thing. Therefore, the side wall is set up and assembled at the same time as being locked, so that it is easily assembled and the workability of the unlocking operation is improved.

Moreover, as an assembly structure container, there exists a container disclosed by Unexamined-Japanese-Patent No. 2003-40263. That is, the outer side surface of the first side wall is provided with an engaging member provided with an operating portion at a substantially central portion and provided with engaging protrusions at both ends, and the engaging protrusions are provided at both ends of the second side wall. An engagement portion that regulates the inward rotation of the first side wall by engaging with the engagement projection, and by moving the operation portion of the engagement member up or down, the engagement projection and the engagement portion It is a container of an assembling-type structure in which the engaged state is released. Such a container is in an engaged state at the same time as it is assembled with its side walls upright, and can be easily assembled. Further, when not in use, since the engaged state is released simply by moving the operating portion of the engaging member up or down, the folding work can be easily performed.
JP 2003-165536 A (FIGS. 9 and 15) JP 2003-40263 A (FIGS. 1 to 4)

  In the container described in Japanese Patent Application Laid-Open No. 2003-165536, the unlocking member is composed of a plurality of parts, which not only has a complicated structure but also takes time to assemble. Also, the assembly to the side walls cannot be automated and must be done manually. In addition, in order to operate by holding the unlocking member with a finger, a strong force must be applied to the finger, and the operation is difficult. Further, when the protrusion of the locking elastic piece is enlarged, the unlocking member must be slid so much, and when the protrusion of the locking elastic piece is reduced, a safe locked state cannot be obtained.

  Further, even in the container described in Japanese Patent Application Laid-Open No. 2003-40263, the structure of the engaging member is complicated, and assembly to the side wall cannot be automated. Further, the engagement member only needs to be moved up or down, but there is a problem that the engagement protrusions at both ends are not evenly moved during operation, and the engagement state cannot be released smoothly.

  The present invention has been made in view of the present situation, and it is an assembly-type composition excellent in workability as a lock structure that can be smoothly operated while being able to automate the assembly to the side plate with a simple structure of the unlocking member. 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. An assembly type synthetic resin container that can be folded inward with a pair of side plates to be engaged, and is provided with a lock lever provided at both ends of one opposing pair of side plates and an engagement provided on the other opposing pair of side plates The lock lever is formed by pressing a lock release member mounted on the other opposing pair of side plates at the tip of a plate that is cut out on three sides and provided with one side integrated with the side plate. The lock release member has a receiving projection that receives the projection for engagement and an engagement piece that engages with the engagement portion. The operation unit is provided with an upper plate and a lower plate on the surface plate. Be formed in a substantially U-shaped cross section Te, provided finger hanging concave portion at a substantially central portion of said surface plate, said forming a locking portion or locking projection in the vicinity of the recess for the finger hook, both end portions of the surface plate A locking projection or a locking portion is formed, and the locking portion is provided with a substantially U-shaped column having a narrower cross section than the long hole in a long hole provided in the surface plate, The locking protrusion is formed by providing an arrowhead-like protrusion inside a long hole provided in the surface plate and by cutting out the upper and lower plates above and below the arrowhead-like protrusion, and the unlocking member is assembled. The side plate to be formed is formed with a portion where the unlocking member is fitted in a recess, and a locking projection or a reverse relationship at a position corresponding to the locking portion or the locking projection of the unlocking member. A locking part is provided, and a lock release member is pressed against the recess. The arrow-like projections of the unlocking member are engaged with the opening side of the substantially U-shaped cross section of the engaging portion provided at the corresponding position of the side plate on which the unlocking member is assembled, while the unlocking member is assembled. The arrow-like projections on the side plates are locked to the opening side of the substantially U-shaped cross section of the locking portion provided at the corresponding position of the unlocking member, and the unlocking member can be moved up and down on the top of the pair of side plates with one touch Characterized by assembly.

  In addition, the sliding gap of the locking portion or the locking projection provided in the vicinity of the finger hanging recess of the unlocking member should be formed smaller than the locking projection provided at both ends or the sliding gap of the locking portion. Is preferred. In this way, by increasing the outer clearance of the slide, the resistance when the unlocking member is tilted is reduced and can be smoothly moved up and down. Further, the spring on the lower surface of the unlocking member is preferably provided between a locking portion or locking protrusion provided near the finger-hanging recess and a locking projection or locking portion provided at both ends. By comprising in this way, it can be moved up and down with good balance.

  As is apparent from the above description, according to the present invention, the unlocking member and the side plate can be automatically assembled by a machine, and the number of assembling steps and costs can be reduced. In addition, by providing the slide mechanism at the center and both ends of the unlocking member, the resistance when moving down can be reduced and the operation can be performed smoothly, and the left and right engaging parts of the unlocking member can move up and down equally and in a balanced manner. Therefore, assembling work and folding work as a container are easy.

  The assembly type synthetic resin container according to the present invention will be described in detail based on the illustrated embodiment. The assembly-type synthetic resin container 10 includes a rectangular bottom plate 11 and four side plates 13 to 16 disposed along the edge of the bottom plate 11. Of the four side plates, the side plates 13 and 14 form opposing side plates on the short side, and the side plates 15 and 16 form opposing side plates on the long side. The side plates 13, 14 and the side plates 15, 16 are pivotally attached to respective rotary shafts 18, 19 provided at the end edges of the bottom plate 11.

  In addition, the side plates 13 and 14 and the side plates 15 and 16 are folded inward first from the paired side plates, and the other paired side plates are folded from the rear, but are folded from the rear. In order to be able to fold the side plate substantially horizontally, the position of the rotation axis of the side plate to be folded later is arranged at a position higher than the rotation axis of the side plate to be folded first. That is, the rotation axis of the side plate that is folded later is disposed on the height adjustment unit 20. In the illustrated embodiment, the side plates that are folded first are the side plates 13 and 14 on the short side, and the side plates that are folded later are the side plates 15 and 16 on the long side. A handle hole 21 into which a finger is inserted when carrying the container 10 is provided in the approximate center of the upper portion of the side plates 13 and 14 on the short side.

  As shown in FIGS. 1 and 13, projecting portions 15a and 16a projecting inward so as to be orthogonal to the side plates are provided at both ends of the side plates 15 and 16 on the long side that are folded later. . The outer surfaces of both end portions of the side plates 13 and 14 on the short side are joined to the inner surfaces of the protruding portions 15a and 16a, thereby preventing the side plates 13 and 14 from rotating outward, and as will be described later, the side plate 13 , 14 is provided with a lock portion so as to prevent it from falling inward. Therefore, the assembled state is reliably maintained by the protrusions 15a and 16a.

  The side plates 13 and 14 and the side plates 15 and 16 are pivotally attached to the bottom plate 11. First, the side plates 13 and 14 can be folded on the bottom plate 11 inward. In the illustrated embodiment, the side plates 13 and 14 on the short side are first folded, and then the side plates 15 and 16 on the long side are folded. The final folded state is a plate that is substantially horizontal as a whole. State (not shown). The container 10 having the above-described configuration can be joined to each other when the side plates 15 and 16 on the long side are erected with the rotation shaft 19 as a fulcrum from the folded state, and then the side plates 13 and 14 on the short side are erected. It can be locked by the lock part 23 provided in, and it can be set as an assembly state.

  Next, the structure of the lock release member 24 that releases the lock state of the lock part 23 and the lock part 23 will be described. The feature of the present invention is that it can be automated when the unlocking member 24 is assembled to the side plates 13 and 14, and the unlocking member 24 smoothly moves up and down so that the unlocking operation can be easily performed. It is in. First, the lock portion 23 will be described. The lock portion 23 includes lock levers 25 and 25 provided at both end portions of the pair of long side plates 15 and 16 and both sides of the pair of short side plates 13 and 14. It consists of engaging parts 27, 27 provided on the end face.

  As shown in FIGS. 1 and 13 to 15, the lock levers 25, 25 are formed by cutting out the side plates 15, 16 on the long side and projecting the receiving portion 31 toward the projecting portions 15 a, 16 a. Yes. That is, the substantially U-shaped receiving portion 31 that receives the pressing protrusion of the unlocking member attached to the side plate on the short side at the tip of the plate 30 that forms part of the side walls of the side plates 15 and 16 protrudes inward. An engaging piece 33 is provided at the upper end of the receiving portion 31. The engaging piece 33 engages with engaging portions 27 and 27 on both side end surfaces of the side plates 13 and 14.

  The outer peripheral edges of the lock levers 25, 25 comprising the plate 30, the receiving part 31 and the engagement piece 33 are disposed in a cutout hole 35 having substantially the same shape formed by cutting out the side plates 15, 16. The plate 30 is provided with a through hole 37 on the side of the base 34 connected to the side plates 15 and 16. Therefore, the base 34 of the plate 30 can be bent in the vertical direction and has a spring action.

  The receiving portion 31 is a substantially U-shaped recess projecting from the inner surface of the tip of the plate 30, and has an inner side surface in a direction parallel to the side plate and an inner side surface in a direction orthogonal to the side plate. A pressing protrusion protruding from the tip of the release member 24 is inserted. A guide slide surface 38 having a curved surface or a tapered surface is formed on the engagement piece 33 provided at the upper end portion of the receiving portion 31, and a step portion 39 that engages with the engagement portions 27, 27 is formed on the opposite side. Is formed.

  Concave portions 40 and 41 are formed on the inner surfaces of the projecting portions 15a and 16a on the surfaces facing the receiving portion 31 and the engaging piece 33, respectively. The recess 40 serves as an allowance for the receiving portion 31, and facilitates insertion of the pressing protrusion protruding from the tip of the unlocking member 24. The concave portion 41 serves as a relief allowance for receiving the engaging portions 27 at both ends of the upper frames of the side plates 13 and 14. Therefore, the recess 40 and the recess 41 can be omitted as appropriate.

  First, when the side plates 15 and 16 are raised and then the side plates 13 and 14 are raised and assembled, the engaging portions 27 and 27 provided on both side end surfaces of the side plates 13 and 14 come into contact with the guide sliding surface 38. The engaging piece 33 and the receiving portion 31 are gradually pushed down while sliding on the guide sliding surface 38. When the engaging portions 27, 27 reach the stepped portion 39 on the opposite side of the guide sliding surface 38 beyond the engaging piece 33, the engaging piece 33 is pushed up and returned by the spring action of the plate 30. In this way, the engagement piece 33 and the engagement portion 27 are engaged and locked.

  Next, the structure of the engaging portions 27 and 27 provided on both side end surfaces of the pair of side plates 13 and 14 on the short side will be described. As shown in FIGS. 2, 10, and 13, the engaging portion 27 is provided with notches 40 and 40 at the upper portions of both side ends of the side plates 13 and 14, and has a width dimension smaller than the width dimension of the side plates 13 and 14. It is formed by doing. The width dimension of the side plates 13 and 14 is reduced because the outer surfaces of the side plates 13 and 14 and the outer surfaces of the projecting portions 15a and 16a become the same when the engaging portion 27 is fitted into the recess 41. The height is adjusted.

  Further, an inclined surface 42 is formed on the lower surface of the engaging portion 27 by a tapered surface. When the side plates 13 and 14 are assembled upright after the side plates 15 and 16 are assembled, the engaging portion 27 has a lower inclined surface abutted against a guide sliding surface 38 of an engaging piece 33 provided at the upper end portion of the receiving portion 31. Touch. When the inclined surface 42 and the guide sliding surface 38 come into contact with each other, the engaging piece 33 is smoothly pushed down by both inclined surfaces.

  Next, the unlocking member 24 that releases the locked state will be described. As shown in FIG. 1 and FIGS. 5 to 9, the unlocking member 24 has pressing protrusions 51 that are fitted into the receiving portion 31 at both ends of the operation portion 50, and a biasing force on the lower surface. Provided with springs 52, 52 for providing The operation unit 50 is formed by providing an upper plate 50b and a lower plate 50c above and below the surface plate 50a so as to have a substantially U-shaped cross-section. It becomes. The springs 52, 52 have a substantially inverted C shape, and are provided at an intermediate portion between the both end portions of the operation portion 50 and the finger hanging concave portion 53.

  Further, the operating portion 50 is provided with locking portions 55, 55 adjacent to both sides of the finger hanging concave portion 53, and locking projections 57, 57 are provided on the back surface in the vicinity of both ends. As shown in FIGS. 8 and 11, the locking portions 55, 55 are provided with a long hole 50d in the surface plate 50a, and a column 60 having a U-shaped cross section narrower than the width of the long hole 50d. It is formed by standing between the lower plate 50c. Locking protrusions 61 provided at corresponding positions of the side plates 13 and 14 on the short side are locked to the opening side of the column 60 having the U-shaped cross section. On the other hand, as shown in FIGS. 6, 9 and 12, the locking projection 57 is provided with a long hole 50e in the surface plate 50a, and provided with arrowhead-like protrusions 63 on both sides of the long hole 50e. It is formed by cutting out the upper plate 50b and the lower plate 50c above and below the arrowhead projection 63. The arrowhead-like projection 63 is engaged with an engaging portion 65 provided at a corresponding position of the side plates 13 and 14 on the short side.

  The side plates 13 and 14 on the short side are formed with locking projections 61 and locking portions 65 that are opposite to the locking portions 55 and 55 and the locking projections 57 and 57. That is, as shown in FIGS. 2 and 3, the portions of the side plates 13, 14 where the unlocking members 24 are fitted are recessed to form the recesses 70, and the locking projections 61 are the handle holes of the side plates 13, 14. A long hole 61a is provided above 21 and an arrowhead-like protrusion 67 is projected from both sides of the long hole 61a to the outside. In addition, the locking portion 65 projects part of the side plates 13 and 14 outward, and provides the protruding side plates with inward parallel locking pieces 69 and 69. It is formed by drilling long holes 65a and 65a on both sides.

  Since the unlocking member 24 and the side plates 13 and 14 are configured as described above, when the operation unit 50 is abutted and pressed from the outside of the side plates 13 and 14 on the short side, the locking portion 55 of the operation unit 50 is pressed. 55, the locking projections 61, 61 of the short side plates 13, 14 are engaged (see FIG. 11), and the engaging portions 65, 65 of the short side plates 13, 14 are engaged with the operating portion 50. Stop projections 57, 57 engage (see FIG. 12). That is, as shown in FIGS. 11 and 12, the locking projections 61, 61 are inserted from the long holes 50 d, 50 d and engage with the opening side of the column 60 having a U-shaped cross section, while the locking projection 63 63 are inserted from the long holes 65a and 65a and engaged with the locking pieces 69 and 69, respectively.

  In the above embodiment of the present invention, in order to mount the lock release member 24 having the above configuration in the recess 70 of the side plates 13 and 14, the lock release member 24 is pressed against the recess 70 and pressed as it is, so that it can be mounted with one touch. can do. Therefore, damage and deformation of the unlocking member 24 can be prevented, and automatic assembly by a machine is possible. As described above, the operation portion 50 and the side plates 13 and 14 on the short side are not detached by the engagement of the locking portion 55 and the locking projection 61 and the locking projection 57 and the locking portion 65. Smooth sliding in the vertical direction is possible.

  In the above configuration, it is preferable that the clearance between the locking portion 55 and the locking projection 61 slide is smaller than the clearance between the locking projection 57 and the locking portion 65. For example, it is preferable to form the gap between the locking portion 55 and the locking projection 61 smaller than the clearance between the locking projection 57 and the locking portion 65 by about 0.5 to 2.0 mm. Since the finger hanging concave portion 53 is provided at the substantially central portion of the operation portion 50, when the operation portion 50 moves up and down, the inclination of both end portions becomes larger than that of the central portion. By making the gap with the stop portion 65 larger than the gap between the locking portion 55 and the locking projection 61, the resistance is reduced and the vertical movement can be performed smoothly.

  In order to insert the engagement protrusion of the engagement member into the long rectangular hole, for example, in the container described in Japanese Patent Application Laid-Open No. 2003-40263, as known as the prior art, first, the engagement on one side is performed. After inserting the mating protrusion into the long hole, the other engaging protrusion is inserted while being shifted to the opposite side, or the engaging member is bent and both engaging protrusions are simultaneously inserted into the long hole. In the former example in which one side is inserted and then the other side is inserted after being shifted, a lateral backlash occurs in the engaging member, which is not preferable. Further, in the latter example in which the engagement projections at both ends are inserted at the same time by bending, the mounting operation is difficult.

  Next, the operation of the lock portion 23 will be described with reference to FIGS. When assembling the container, first, the opposed side plates 15 and 16 on the long side are erected, and then the side plates 13 and 14 on the short side are erected. When the side plates 13 and 14 are pulled up by holding the upper end portions (the side where the unlocking member 24 is attached), the side plates 13 and 14 are turned up around the rotation shaft 18 at the lower end and are started up while drawing an arc on the inner surfaces of the side plates 15 and 16 (see FIG. 13).

  When the upper ends of the side plates 13 and 14 approach the projecting portions 15 a and 16 a of the side plates 15 and 16, the engaging portion 27 comes into contact with the guide sliding surface 38 of the engaging piece 33. Further, when the side plates 13 and 14 are rotated, the engaging piece 33 is pushed downward by the spring action of the plate 30. Since the inclined surface 42 is formed in the lower surface of the engaging part 27 at this time, the engaging piece 33 can be pushed down smoothly.

  When the engaging portion 27 is positioned on the opposite side beyond the guide sliding surface 38, the engaging piece 33 is pushed up by the spring action of the plate 30, so that the engaging portion 27 engages with the step portion 39. Further, the pressing protrusion 51 of the lock release member 24 is inserted into the receiving portion 31 from the inner release side. At this time, a part of the engaging portion 27 is inserted into the recess 41 formed in the projecting portions 15a and 16a, and both end portions of the side plates 13 and 14 are joined to the inner surfaces of the projecting portions 15a and 16a. And the outer surfaces of the protrusions 15a and 16a are the same surface (see FIG. 15). In this manner, the long side plate 15 and 16 can be erected, and then the short side plate 13 and 14 can be erected.

  Next, when the folded state is released from the assembled state, the engagement piece 33 may be pushed down to release the engagement state between the engagement portion 27 and the step portion 39. In order to release the engaged state between the engaging portion 27 and the engaging piece 33, a finger is inserted into the finger-engaging recess 53 of the unlocking member 24 and pushed downward against the spring 52. Since the part 51 is also pushed down, the receiving part 31 is also pushed down by the pressing projection 51. If the receiving part 31 is pushed down, the engaging piece 33 integrally formed in the upper part will also descend | fall, and the engagement state with the engaging part 27 will be cancelled | released.

  If the engagement state between the engagement portion 27 and the stepped portion 39 is released, the side plates 13 and 14 can be tilted inward as opposed to assembly. The pressing protrusion 51 that pushes down the receiving portion 31 can be pulled out from the opening inside the receiving portion 31 while tilting the side plates 13 and 14. When the pressing projection 51 is pulled out from the receiving portion 31, the receiving portion 31 returns upward. However, since the engaging portion 27 exceeds the upper surface of the engaging piece 33, the side plates 13 and 14 are brought down. Is possible.

  Since the side plates 13 and 14 turn while rotating while the pressing projection 51 pushes down the receiving portion 31, the engaging portion 27 at the upper end can exceed the upper surface of the engaging piece 33. Therefore, the lock state can be released and folded by simply tilting the lock release member 24 while pushing it down. If the finger is released from the finger-engaging recess 53 of the unlocking member 24 and the depression is stopped while the side plates 13 and 14 are being tilted, the unlocking member 24 returns to its original position by the bias of the spring 52.

  The relationship between the locking portion and the locking protrusion in the unlocking member that releases the locked state by pushing down the receiving portion 31 is not limited to the above embodiment. For example, the locking portion 55 and the locking projection 61 and the locking projection 57 and the locking portion 65 are provided opposite to each other, or the locking portion or the locking projection is provided on the unlocking member side. It is good also as a structure which provides the protrusion for a latching or the latching | locking part in 14 side. That is, the locking release member may be provided with a locking portion and a locking projection, but only one of them may be provided and a locking projection or locking portion corresponding to the side plates 13 and 14 may be provided. Good.

The left half of the short side plate showing the assembled container is a front view, and the right half is a cross-sectional view in which a part of the long side plate is omitted. The left half of the side plate on the short side before mounting the unlocking member is a front view, and the right half is a rear view. It is AA sectional drawing in FIG. It is BB sectional drawing in FIG. The right half of the unlocking member is a front view, and the left half is a rear view. It is a top view of an unlocking member similarly. It is CC sectional drawing in FIG. It is DD sectional drawing in FIG. It is EE sectional drawing in FIG. It is a principal part expanded sectional view which shows the state which attached the lock release member to the short side plate. It is a principal part cross-section perspective view which shows the engagement state of a short side plate and a lock release member. Similarly, it is a principal part cross-sectional perspective view which shows the engagement state of a short side plate | board and a lock release member. It is a principal part perspective view for demonstrating the assembly state of the side plate of a short side, and the side plate of a long side. It is sectional drawing for description of the state which shows operation | movement of a lock | rock part and the side plate of a short side rises. It is operation | movement of a lock | rock part, and is sectional drawing for description of a locked state.

Explanation of symbols

10: Assembled synthetic resin container 11: Bottom plate
13, 14: Side plate on the short side
15, 16: Long side plate 5a, 16a: Projection
21: Handle hole 23: Lock part
24: Lock release member
25: Lock lever 27: Engagement part
30: Plate
31: substantially U-shaped receiving portion 33: engagement piece
34: Base
35: Cutout hole
37: Through hole 38: Guide sliding surface
39: Step
40: Notch 50: Operation part
51: pressing butt section
52: Spring
53: Recess for finger hook 55: Locking portion
57: Locking protrusion
60: U-shaped support post 61: Locking protrusion
63: Arrowhead projection
65: Locking part
67: Arrowhead projection

Claims (3)

It consists of a planar rectangular bottom plate and four side plates that are foldably connected along the side edge of the bottom plate, and each side plate can be folded inward with a pair of opposing side plates. A synthetic resin container,
The lock lever includes a lock lever provided at both end portions of one opposing pair of side plates and an engagement portion provided on the other pair of opposing side plates, and the lock lever is cut out on one side At the front end of the plate provided integrally with the side plate, and a receiving portion for receiving the pressing projection of the unlocking member mounted on the other pair of opposite side plates, and an engaging piece for engaging with the engaging portion. And
The unlocking member has a pressing protrusion protruding at both ends of the operating portion and a spring protruding on the lower surface. The operating portion is provided with an upper plate and a lower plate on the surface plate, and has a substantially U-shaped cross section. Formed into
A finger hook recess is provided at a substantially central portion of the surface plate , a lock portion or a lock protrusion is formed in the vicinity of the finger lock recess, and a lock protrusion or lock portion is formed at both ends of the surface plate. The locking portion is formed by erecting a pillar having a substantially U-shaped cross section narrower than the long hole in a long hole provided in the surface plate, and the locking protrusion is a long length provided in the surface plate. Provided with an arrowhead-like projection inside the hole, and formed by cutting out the upper and lower plates above and below the arrowhead-like projection,
The side plate on which the unlocking member is assembled is formed with a concave portion where the unlocking member is fitted, and has a reverse relationship to the position corresponding to the locking portion or the locking projection of the unlocking member. Provided with a locking protrusion or locking portion,
By pressing the unlocking member against the concave portion, the arrowhead-like projection of the unlocking member is engaged with the opening side of the substantially U-shaped cross section of the locking portion provided at the corresponding position of the side plate on which the unlocking member is assembled. On the other hand, the arrowhead protrusions of the side plate on which the unlocking member is assembled are locked to the opening side of the substantially U-shaped cross section of the locking portion provided at the corresponding position of the unlocking member, and the unlocking member is paired An assembly-type synthetic resin container that is assembled to the upper part of the side plate so as to be movable up and down with one touch .   The slide clearance of the locking portion or locking projection provided in the vicinity of the finger hanging recess of the unlocking member is formed smaller than the sliding clearance of the locking projection or locking portion provided at both ends. The assembly-type synthetic resin container according to claim 1.   A spring on the lower surface of the unlocking member is provided between a locking portion or a locking projection provided in the vicinity of the finger hanging recess and a locking projection or locking portion provided at both ends. The assembly-type synthetic resin container according to claim 1 or 2.

Images