JP2023154237A - container - Google Patents

Abstract

To assemble and fold easily and safely.SOLUTION: A rotary coupling 7 has a first coupling member 71 fixed and attached to a lower wall 62, a second coupling member 73 fixed and attached to an upper wall 61, a rotary member 72 mutually rotatably connected to the first coupling member 71 and mutually rotatably connected to the second coupling member 73. A first contact 722 disposed on the rotary member 72 is interposed between the upper wall 61 and the lower wall 62 so as to form a gap S between the upper wall 61 and the lower wall 62.SELECTED DRAWING: Figure 1

Description

The present invention relates to a container whose walls are folded and folded.

As a cart with foldable walls, side panels erected around the main body of the cart are configured to be foldable onto the main body of the cart, and brackets for stacking are attached near the four corners of the main body of the cart, and brackets for stacking each stack are attached to the four corners of the main body of the cart. The bracket is provided at the lower end with an engagement part for actual stacking that engages with the upper side of the side panel of the lower cart when the side panels are stacked on the carts when the side panels are assembled, and when the side panels are stacked on the carts when the side panels are folded. A cargo transporting vehicle capable of stacking is provided with an empty stacking support part at the upper end that supports each stacking bracket of the upper truck, and each stacking bracket is detachably attached to the main body of the trolley. A cargo transport vehicle is known (see Patent Document 1).

Japanese Patent Application Publication No. 2005-088965

By the way, the load carrier of Patent Document 1 does not have a structure in which each side panel can stand on its own on the trolley body when each side panel is raised on the trolley body. As a result, it is difficult for one person to assemble the cart, and the work of assembling and folding the side panels is time-consuming and does not ensure sufficient work safety. There's a problem.

Therefore, an object of the present invention is to provide a container that can be easily and safely assembled and folded.

In order to solve the above problems, a container according to the present invention includes a base frame portion that is rectangular in plan view, front, rear, left and right walls surrounding the base frame portion, and at least one of the walls being an upper side wall. a rotary connector that is divided into a lower wall portion and a lower wall portion and rotatably connects the upper wall portion and the lower wall portion to each other, and the rotary connector is connected to the lower wall portion. a first connecting member fixedly attached; a second connecting member fixedly attached to the upper wall; and a first connecting member rotatably connected to the first connecting member and the second connecting member fixedly attached to the upper wall. a connecting member and a rotating member rotatably connected to each other, and the abutting portion provided on the rotating member is interposed between the upper wall portion and the lower wall portion. A gap is formed between the upper wall and the lower wall.

In the container according to the present invention, the wall portion is rotatably connected to the base frame portion via a rotational connection arm, and one end of the rotational connection arm is fixed to a frame material constituting the wall portion. and the other end is rotatably connected to the base frame part, and the rotation center of the rotary connection arm is offset from the wall part toward the inside of the base frame part, The base frame portion may be provided with a locking post that supports the frame member so that it does not fall toward the outside of the base frame portion.

In the container according to the present invention, the lengths of the rotary connecting arms attached to the mutually opposing wall portions may be different from each other.

According to the container according to the present invention, the contact portion provided on the rotating member is interposed between the upper wall portion and the lower wall portion, so that a gap is formed between the upper wall portion and the lower wall portion. Since the operator's fingers are not pinched between the upper wall portion and the lower wall portion, it is possible to improve safety.

According to the container according to the present invention, when the center of rotation of the rotary connecting arm is offset from the wall toward the inside of the base frame, the wall rises with respect to the base frame. The wall can be made to stand on its own by generating a force that tilts the wall toward the outside of the base frame around the center of rotation of the rotating connecting arm, making it easy and safe to assemble and fold. It becomes possible to

According to the container according to the present invention, when the lengths of the rotary connecting arms attached to the mutually opposing wall sections are different from each other, the base frame of the pair of mutually opposing wall sections It becomes possible to fold one wall part over the other wall part which is folded over the other part.

FIG. 1 is a side view showing the structure of a container truck according to an embodiment of the present invention. FIG. 2 is a front view of the container truck of FIG. 1; FIG. 2 is a plan view of the base frame portion of the container truck shown in FIG. 1; 1 is a diagram showing the structure of a rotating connector according to an embodiment of the present invention. (A) is an exploded front view. (B) is a side view of each member. (C) is a plan view of each member. (D) is a front view of the state in which each member is connected. 2 is a diagram showing the structure of an L-shaped member of the container truck of FIG. 1. FIG. (A) is a front view. (B) is a side view. (C) is a plan view. It is a figure explaining folding of the container truck of Drawing 1, and is a front view showing the state where the upper side wall part of one side wall of a pair of side wall parts rotates and is inclined. FIG. 7 is a front view showing a state in which the upper wall portion of one side wall portion further rotates from the state shown in FIG. 6 and is bent until the upper wall portion faces the lower wall portion. A front view showing a state in which the other side wall of the pair of side walls is also bent from the state shown in FIG. 7, and the front wall and rear wall are rotated and laid down on the upper surface of the base frame part. It is. FIG. 9 is a front view showing a state in which one of the pair of side walls is rotated from the state shown in FIG. 8 and folded onto the front wall and rear wall on the upper surface of the base frame part. FIG. 10 is a front view showing a state in which the upper wall of one side wall is shifted from the state of FIG. 9 and the upper wall is brought into contact with the lower wall. From the state shown in FIG. 10, the other side wall of the pair of side walls is also folded, and the pair of side walls are folded over the front wall and rear wall on the upper surface of the base frame. FIG.

The present invention will be described below based on the illustrated embodiments. In this embodiment, a case where wheels are attached to a container according to the present invention to form a container truck will be described as an example. In the description of this invention, as shown in each figure, the directions are upward/downward, front/back (in other words, front/back), and left/right along each axis of a three-dimensional orthogonal coordinate system. Define direction.

(Overall configuration of container truck)
FIG. 1 is a side view showing the structure of a container truck 1 according to an embodiment of the present invention, FIG. 2 is a front view of the container truck 1, and FIG. 3 is a plan view of the base frame portion 2 of the container truck 1. be. Note that, in order to make the structure of the base frame section 2 easier to understand, FIG. 3 does not illustrate the front wall section 4, the rear wall section 5, and the pair of side wall sections 6.

The container truck 1 according to the embodiment includes a base frame portion 2 that is rectangular in plan view, a plurality of wheels 3 attached to the lower surface of the base frame portion 2, and front, rear, left, and right walls surrounding the base frame portion 2 (specifically, Specifically, the front wall 4, the back wall 5, and a pair of side walls 6), and a pair of side walls 6 are divided into an upper wall 61 and a lower wall 62. and a rotary connector 7 that rotatably connects the lower wall portion 62 and the lower wall portion 62, and the rotary connector 7 is fixedly attached to the lower wall portion 62. , a second connecting member 73 fixedly attached to the upper wall portion 61 and rotatably connected to the first connecting member 71 and rotatably connected to the second connecting member 73. The first contact portion 722 provided on the rotating member 72 is interposed between the upper wall portion 61 and the lower wall portion 62, so that the upper wall portion 61 and the lower wall portion 62 are connected to each other. A gap S is formed between the side wall portion 62 and the side wall portion 62.

The container truck 1 mainly includes a base frame portion 2 that is rectangular in plan view, a plurality of wheels 3 (four in the example shown in the figure) attached to the lower surface of the base frame portion 2, and a plurality of wheels 3 attached to the bottom surface of the base frame portion 2. It has a front wall part 4 and a back wall part 5 that face each other and are arranged along each of the four sides of a rectangular shape in a plan view, and a pair of side walls 6 that face each other.

Although the container trolley 1 is not limited to a specific size, it is assumed that it is relatively large (in other words, it is relatively long, especially in the front-back direction). It is assumed that the outer dimension along the line is about 1.5 to 3.5 m, and the outer dimension along the left and right direction is about 0.5 to 1.5 m.

On the upper surface of the base frame section 2, a front wall section 4 and a rear wall section 5 are disposed for each of a pair of rectangular mutually opposing short sides in a plan view, and a front wall section 4 and a back wall section 5 are provided on each of the pair of rectangular mutually opposing short sides in a plan view. A side wall portion 6 is provided for each of the pair of long sides.

The base frame portion 2 includes a pair of left and right frame members 21 (long sides in the example shown in the figure) that face each other parallel to each other along the front-rear direction in plan view, and a pair of left and right frame members 21 (long sides in the example shown in the figure) that face each other parallel to each other along the left-right direction in plan view. A pair of front and rear frame members 22 (short sides in the example shown in the figure) that face each other and connect the ends of the left and right frame members 21 in the longitudinal direction, and are rectangular in plan view. It has a frame body.

The base frame portion 2 further includes two reinforcing frame members 23 which are placed between the pair of front and rear frame members 22 along the front and back direction in plan view, inside the rectangular frame body, and Three reinforcing frame members 24 are spanned between a pair of left and right frame members 21 along the left-right direction when viewed, and are spanned between a pair of left and right frame members 21 along the left-right direction when viewed from above. Two sets of wheel support frame members 25 (furthermore, two sets of wheel support frame members 25 are arranged so as to sandwich the front reinforcing frame member 24 and the rear reinforcing frame member 24 in the front-rear direction). , and is formed in a lattice shape as a whole in plan view.

The left and right frame members 21, the front and rear frame members 22, the reinforcing frame members 23 and 24, and the wheel support frame member 25, which constitute the base frame portion 2, are each constructed of, for example, square metal pipes.

The wheels 3 are attached to the lower surface side of each pair of wheel support frame members 25 at positions near the ends on both sides in the left-right direction.

Side wall locking columns 26 are provided at each of the four rectangular corners of the base frame section 2 in plan view. The side wall locking column 26 has a wall that surrounds two outer sides of each rectangular corner in a plan view of the base frame 2 (that is, the cross section along the front, rear, left, and right plane is L-shaped, and the base frame (It is open toward the inside of the base frame part 2), and is installed in such a manner that it stands a predetermined length upward from a corner of the base frame part 2.

A wire mesh 27 is attached to cover the inside of the rectangular frame body of the base frame portion 2 in plan view, and forms the bottom surface of the loading portion of the container truck 1.

The front wall portion 4 and the rear wall portion 5 each include a rectangular frame body formed by connecting square pipes made of metal, for example, as frame materials, and a plate surface material (Fig. In the example shown in , it has a wire mesh) and.

The front wall part 4 and the back wall part 5 are formed between the lower end frame material (in the posture shown in FIGS. 1 and 2) of the rectangular frame bodies that constitute each and the base frame part 2. It is rotatably connected and attached to the base frame part 2 via a hinge 28 provided therebetween, and can stand up against the base frame part 2 or fall down toward the inside of the base frame part 2. .

A locking tool 41 is provided at each end of both sides of the front wall 4 and the rear wall 5 in the left-right direction so as to be rotatable around an axis along the left-right direction and movable in the left-right direction by a predetermined dimension. It is attached. In the example shown in the figure, three fasteners 41 are attached to each of the frame members on both sides (that is, the left and right sides) of the front wall portion 4 in the left-right direction, spaced apart from each other in the up-down direction. Similarly, for the rear wall portion 5, three locking tools are attached to each of the frame members on both sides (that is, the left side and the right side) of the rear wall portion 5 in the left and right direction, spaced apart from each other in the vertical direction. .

The side wall portion 6 has a dimension along the front-rear direction that is approximately equal to the dimension along the front-rear direction of the base frame portion 2 in a plan view (that is, the dimension of the long side of the rectangular frame body of the base frame portion 2 in a plan view). It has an upper wall portion 61 and a lower wall portion 62, and a rotation connector 7 interposed between the upper wall portion 61 and the lower wall portion 62.

The upper wall portion 61 and the lower wall portion 62 that constitute the side wall portion 6 are respectively a rectangular frame formed by connecting, for example, metal square pipes as a frame material, and an inner side of the frame. It has a wire mesh covering it.

The lower wall portion 62 is rotatably connected to and attached to the base frame portion 2 via a rotary connecting arm 63.

One end of the rotating connecting arm 63 is located near the lower end of each of the frame members (referred to as "lower wall front and rear frame members 621") on both sides (that is, front and rear) of the lower wall 62 in the front-rear direction. Fixed and attached.

Rotating shafts 64 whose axial center directions are arranged along the front-back direction are provided at positions near both ends of the front and rear frame members 22 of the base frame portion 2 in the left-right direction. The other end of the rotational connection arm 63 is rotatably connected to the base frame portion 2 via a rotational shaft 64 about the axis of the rotational shaft 64 .

With the lower wall portion 62 of the side wall portion 6 standing up with respect to the base frame portion 2, the lower side wall front and rear frame members 621 enter inside the side wall locking column 26. The side wall locking columns 26 support the lower wall 62 of the side wall 6 so that it does not fall toward the outside of the base frame 2.

The rotary connection arm 63 attached to the lower wall portion 62 of each of the pair of side wall portions 6 facing each other in the left-right direction is connected to the lower wall portion 62 of one side wall portion 6 of the pair of side wall portions 6. (In the example shown in the figure, the center of the thickness of the lower wall part 62 (specifically, the front and rear frame members 621 of the lower wall part) in front view of the rotary connection arm 63 attached to the lower wall part 62 on the right side) The lower wall portion 62 of the other side wall portion 6 of the pair of side wall portions 6 (in the example shown in the figure, the left side The center of thickness of the lower wall 62 (specifically, the lower wall front and rear frame members 621) of the rotary connection arm 63 attached to the lower wall 62) when viewed from the front and the axial center position of the rotating shaft 64. They are formed so that the dimension α2 along the left-right direction between them is longer. That is, the lengths of the rotary connection arms 63 attached to each of the pair of side walls 6 facing each other are different from each other.

Frame materials (referred to as "upper wall front and rear frame materials 611") on both sides (that is, front and rear) of the upper wall 61 of the side wall 6 in the front-rear direction, respectively, at positions near the ends of both sides in the longitudinal direction. A locking piece 65 that engages with the locking tool 41 is provided at a position near the end of the lower wall 62 on the upper wall 61 side in the longitudinal direction of each of the front and rear frame members 621 of the lower wall 62 .

The locking piece 65 is formed as a plate-shaped portion that protrudes toward the outside of the base frame portion 2 along the front-rear direction from the upper wall front and rear frame members 611 and the lower wall front and rear frame members 621. A groove that opens upward and penetrates in the left-right direction is formed in the upper end portion of the locking piece 65.

The locking tool 41 and the locking piece 65 are configured such that when the locking tool 41 is in an upwardly rotated position, the locking tool 41 is inserted into the groove of the locking piece 65 to bring them into an engaged state. It becomes possible to remove the locking tool 41 from the groove of the locking piece 65 to release the engaged state. The engagement state between the locking tool 41 and the locking piece 65 (that is, the posture and state of the locking tool 41 and the locking piece 65 in FIG. 2) is maintained in the downwardly rotated position.

By mutually engaging the locking tool 41 and the locking piece 65, rotation of the front wall portion 4, the rear wall portion 5, and the pair of side wall portions 6 relative to the base frame portion 2 is prevented, and the container truck Front, rear, left and right peripheral walls surrounding the loading section 1 are formed.

(Rotating connector)
FIG. 4 is a diagram showing the structure of the rotation connector 7 provided on the side wall portion 6 of the container truck 1. As shown in FIG. FIG. 4 shows the attitude of the left rotation connector 7 when the side wall 6 (specifically, the upper wall 61 and the lower wall 62) is in the attitude shown in FIGS. The following description of the connector 7 will be based on the attitude of the rotary connector 7 shown in FIG. 4.

The rotation connector 7 is interposed between the upper wall 61 and the lower wall 62 of the side wall 6, and allows the upper wall 61 and the lower wall 62 to rotate freely relative to each other. Link. In the example shown in the figure, three rotating connectors 7 are disposed between the upper wall 61 and the lower wall 62 and spaced apart from each other in the front-rear direction.

The rotating connector 7 mainly includes a first connecting member 71, a rotating member 72, and a second connecting member 73.

The first connecting member 71 has a mounting portion 711 that is formed in a plate shape and whose plate surface follows the front, rear, left, and right planes, and a connecting portion 712 that is formed in a plate shape and whose plate surface aligns with the upper, lower, left, and right planes, The rear end of the attachment part 711 and the lower end of the connection part 712 are formed as a member that connects with each other at right angles.

A through hole 713 is formed in the connecting portion 712 of the first connecting member 71 in the front-rear direction (that is, in the direction perpendicular to the plate surface of the connecting portion 712).

The first connecting member 71 is connected to the lower wall 62 by fixing the lower surface of the mounting portion 711 to the upper surface of the frame material at the upper end of the rectangular frame constituting the lower wall 62 of the side wall 6. can be installed.

The rotating member 72 includes a main body part 721 that is formed in a plate shape and whose plate surface follows the vertical and horizontal planes, and a main body part 721 that extends forward from one end in the left-right direction (the left end in the example shown in FIG. 4) of the main body part 721. A protruding bank-like/wall-like first contact portion 722 and a bank-like/wall-like first contact portion 722 that protrudes backward from the other end in the left-right direction (in the example shown in FIG. 4, the right end) of the main body portion 721. It has a second contact portion 723.

A pair of through holes (in the example shown in FIG. 4) are provided in the main body 721 of the rotating member 72, spaced apart from each other in the vertical direction, and penetrating in the front-rear direction (that is, the direction perpendicular to the plate surface of the main body 721). An upper first through hole 724 and a lower second through hole 725) are formed.

The second connecting member 73 has a mounting portion 731 that is formed in a plate shape and whose plate surface follows the front, rear, left, and right planes, and a connecting portion 732 that is formed in a plate shape and whose plate surface follows the upper, lower, left, and right planes, The front end of the attachment part 731 and the upper end of the connection part 732 are formed as a member that connects with each other at right angles.

A through hole 733 that penetrates the connecting portion 732 of the second connecting member 73 in the front-rear direction (that is, the direction perpendicular to the plate surface of the connecting portion 732) is formed.

The first connecting member 71 and the second connecting member 73 are members of the same form, although their postures when disposed on the side wall portion 6 are different.

The second connecting member 73 is attached to the upper wall portion 61 via the L-shaped member 8 .

FIG. 5 is a diagram showing the structure of the L-shaped member 8. As shown in FIG. FIG. 5 shows the attitude of the left L-shaped member 8 when the side wall 6 (specifically, the upper wall 61 and the lower wall 62) is in the attitude shown in FIGS. 8 will be explained based on the attitude of the L-shaped member 8 shown in FIG.

The L-shaped member 8 includes a first wall part 81 that is formed in a plate shape and whose plate surface follows the vertical, horizontal, and horizontal planes, and a second wall part 82 that is formed in a plate shape and whose plate surface follows the vertical, longitudinal, and frontal planes. as a member in which the end of the first wall part 81 on the base frame part 2 side (in the example shown in FIG. 5, the right end) and the rear end of the second wall part 82 are connected to each other at right angles. It is formed. In other words, the L-shaped member 8 is formed into an L-shape in plan view.

The L-shaped member 8 is formed so that its width when viewed from the front is the same as the width when viewed from the front of the frame material that constitutes the rectangular frame that constitutes the upper wall portion 61 of the side wall portion 6 .

The L-shaped member 8 is attached to the upper wall 61 with its upper end fixed to the lower surface of a frame material at the lower end of the rectangular frame forming the upper wall 61 of the side wall 6 .

Then, the second connecting member 73 is attached to the lower end of the L-shaped member 8 with the upper surface of the attachment portion 731 fixed, and is attached to the upper wall portion 61 via the L-shaped member 8.

A through hole 713 formed in the connecting portion 712 of the first connecting member 71 and a pair of through holes formed in the main body portion 721 of the rotating member 72, the axial direction of which is arranged along the front-rear direction. The first connecting member 71 and the rotating member 72 are connected to each other by a fastening member (not shown in FIG. 4) that passes through the second through-hole 725 on the lower side and rotatably fastens them to each other. are rotatably connected to each other.

Further, a through hole 733 formed in the connecting portion 732 of the second connecting member 73 and a pair of through holes formed in the main body portion 721 of the rotating member 72 are arranged with the axial direction along the front-rear direction. The second connecting member 73 and the rotating member 72 are connected to each other by a fastening member (not shown in FIG. 4) that passes through the first through hole 724 on the upper side and connects the two rotatably to each other. are rotatably connected to each other.

(Folding of container trolley)
FIGS. 6 to 11 are diagrams illustrating each stage of folding the container truck 1 from a state in which the container truck 1 is assembled and used.

When the container truck 1 is used with materials loaded on the loading section having the base frame section 2 (specifically, the wire mesh 27) as the bottom surface, the container truck 1 has a front wall section 4, a rear wall section 5, and a pair of A side wall portion 6 is raised with respect to the base frame portion 2 (see FIGS. 1 and 2). The loading section of the container truck 1 is formed into a box shape by a base frame section 2, a front wall section 4, a rear wall section 5, and a pair of side wall sections 6 in an upright state.

From the above state, first, the upper wall front and rear frame members 611 of the upper wall 61 of the side wall 6 of the locking tools 41 attached to the front wall 4 and the rear wall 5 are In a state in which the locking tool 41 engaged with the provided locking piece 65 is rotated upward and the locking tool 41 can be pulled out from the groove of the locking piece 65, The upper wall portion 61 of the side wall portion 6 is rotated toward the outside of the base frame portion 2 with respect to the lower wall portion 62 via the rotation connector 7 (see FIG. 6), and the upper wall portion 61 The side wall portion 6 is bent until it faces the lower wall portion 62 (see FIG. 7).

Next, among the locking devices 41 attached to each of the front wall 4 and the back wall 5, the locking devices 41 are provided on the lower wall front and rear frame members 621 of the lower wall 62 of the side wall 6. When the locking tool 41 engaged with the locking piece 65 is rotated upward and the locking tool 41 can be pulled out from the groove of the locking piece 65, the locking tool 41 is rotated upward. The engagement between the locking tool 41 and the locking piece 65 is released by moving it along the left-right direction toward the inside of the base frame portion 2 (see FIG. 7).

FIG. 7 shows a state in which the engagement between the left locking tool 41 and the locking piece 65 is released, and the side wall 6 is bent until the upper wall 61 faces the lower wall 62. Similarly, the engagement between the right locking tool 41 and the locking piece 65 is released, and the side wall 6 is bent until the upper wall 61 faces the lower wall 62 (see FIG. 8). ).

Then, each of the front wall part 4 and the back wall part 5 is rotated toward the inside of the base frame part 2 with respect to the base frame part 2 via the hinge 28, and It is thrown upward (see Figure 8).

Here, the center of rotation of the lower wall 62 of the side wall 6 (that is, the axial center position of the rotating shaft 64, which is the center of rotation of the rotating connecting arm 63) is the lower wall 62 (specifically , the base frame portion 2 is moved from the center of the thickness of the lower wall portion 62 by the dimensions α1 and α2 along the left-right direction between the center of the thickness of the lower wall portion front and rear frame members 621) and the axial center position of the rotating shaft 64. It is offset towards the inside of. As a result, in a state where the side wall portion 6 stands up with respect to the base frame portion 2, a force is applied to the side wall portion 6 that causes the side wall portion 6 to tilt toward the outside of the base frame portion 2 around the axis of the rotating shaft 64. occurs.

On the other hand, the lower ends of the lower wall front and rear frame members 621 of the lower wall 62 of the side wall 6 come into contact with the upper surfaces of the left and right frame members 21 of the base frame section 2, and the lower end of the lower wall front and rear frame members 621 contact the side wall. By entering the inner side of the locking column 26, the rotation of the lower wall portion 62 tilting toward the outside of the base frame portion 2 is restricted, and the side wall portion 6 is tilted toward the outside of the base frame portion 2. This will prevent you from falling over.

In addition, when the side wall 6 is bent until the upper wall 61 faces the lower wall 62, the base of the side wall locking column 26 is placed between the upper wall 61 and the lower wall 62. Among the walls surrounding the two outer sides of each rectangular corner in a plan view of the frame portion 2, the wall surrounding the outer side in the left-right direction is sandwiched.

Therefore, even if the engagement between the locking tool 41 and the locking piece 65 is released, the upper wall portion 61 rotates toward the outside of the base frame portion 2 relative to the lower wall portion 62, and the lower wall portion 61 rotates toward the outside of the base frame portion 2. The side wall portion 6, which is bent until it faces the portion 62, is maintained in a state where it is independent and stands up with respect to the base frame portion 2. This allows the worker to fold down the front wall 4 and the rear wall 5 onto the top surface of the base frame 2 without supporting or holding down the side wall 6 in the bent state. Even one person can easily and safely continue folding the container truck 1.

In addition, when the side wall 6 is bent until the upper wall 61 faces the lower wall 62, the rotation connector 7 creates a gap S between the upper wall 61 and the lower wall 62. is formed (see Figure 8).

Specifically, in a state where the upper wall portion 61 faces the lower wall portion 62, the first contact portion 722 of the rotating member 72 of the rotating connector 7 engages the rectangular frame forming the lower wall portion 62. By coming into contact with the outer surface of the frame material at the upper end of the body (in the posture shown in FIG. 8), the rotating member 72 rotates around the center of the second through hole 725 and rotates around the first through hole 724. is prevented from rotating further than the position where it is aligned with the second through hole 725 in the left-right direction (ie, the position in FIG. 8). Since the upper wall 61 hangs down using the first through hole 724 as a connection point via the L-shaped member 8 and the second connection member 73, there is a gap between the upper wall 61 and the lower wall 62. S is formed.

Since the gap S is formed between the upper wall part 61 and the lower wall part 62, the worker's fingers are not pinched between the upper wall part 61 and the lower wall part 62, and the folding operation of the container truck 1 is facilitated. can be done safely.

Note that in a state where the upper wall portion 61 is rotated toward the inside of the base frame portion 2 relative to the lower wall portion 62 and is bent until it faces the lower wall portion 62, the rotation of the rotary connector 7 The second contact portion 723 of the member 72 comes into contact with the inner surface of the upper end frame material (in the posture shown in FIG. 8) of the rectangular frame constituting the lower wall portion 62, so that the rotating member 72 is prevented from rotating further about the center of the second through hole 725 beyond the position where the first through hole 724 is aligned with the second through hole 725 in the left-right direction. Since the upper wall portion 61 hangs down using the first through hole 724 as a connecting point via the L-shaped member 8 and the second connecting member 73, there is a gap between the upper wall portion 61 and the lower wall portion 62. S is formed.

Note that the first connecting member 71 may be attached to the upper wall 61 and the second connecting member 73 may be attached to the lower wall 62 via the L-shaped member 8. Including this case, the object to which the first abutting part 722 of the rotating member 72 of the rotating connector 7 comes into contact is one of the rectangular frames constituting the lower wall part 62 (in the posture shown in FIG. 8). ), the rotation member 72 rotates about the center of the second through hole 725, and the first through hole 724 connects with the second through hole 725. The first abutting portion 722 may abut anywhere as long as it can be prevented from rotating further than the positions lined up in the left-right direction. In other words, the first contact portion 722 of the rotating member 72 is interposed as a spacer between the upper wall portion 61 and the lower wall portion 62, thereby creating a gap between the upper wall portion 61 and the lower wall portion 62. Any form may be used as long as it can form.

Next, the side wall portion 6 is rotated toward the inside of the base frame portion 2 with respect to the base frame portion 2 via the rotation connecting arm 63 and the rotation shaft 64, and the side wall portion 6 is It is folded onto the front wall 4 and the back wall 5 which have fallen upward (see FIG. 9).

At this time, of the pair of side walls 6 facing each other in the left-right direction, the center of thickness of the lower wall 62 (specifically, the lower wall front and rear frame members 621) in front view and the rotation axis 64 are aligned. The side wall 6 to which the rotating connecting arm 63 with the shorter dimension along the left-right direction between the axis position and the axis position is attached (in the example shown in the figure, the dimension α1, the right side wall 6; see FIG. 8) ) is first folded onto the front wall section 4 and rear wall section 5 which are lying on the upper surface of the base frame section 2.

Note that when the side wall 6 is bent until the upper wall 61 faces the lower wall 62, the base of the side wall locking column 26 is located between the upper wall 61 and the lower wall 62. Among the walls surrounding the two outer sides of each rectangular corner in a plan view of the frame portion 2, a wall surrounding the outer side in the left-right direction is sandwiched. Therefore, the upper wall 61 is rotated upward relative to the lower wall 62 via the rotation connector 7 to such an extent that interference between the upper wall 61 and the side wall locking column 26 is eliminated. At the same time, the side wall portion 6 is rotated toward the inside of the base frame portion 2.

Next, the upper wall portion 61 of the side wall portion 6 is shifted along the left-right direction with the side on which the rotation connector 7 is attached facing the outside of the base frame portion 2 (i.e., the left side in FIG. 9). It will be done. This allows the rotating member 72 of the rotating connector 7 to move from the position in which the first through hole 724 and the second through hole 725 are lined up in the vertical direction (see FIG. 9) to the horizontal direction. While rotating to the side-by-side position, they enter the space surrounded by the first wall 81 and second wall 82 of the L-shaped member 8 (see FIG. 10). The upper wall 61 and lower wall 62 of the side wall 6 are in contact with each other without any gap.

Here, the shorter dimension α1 of the rotary connection arm 63 is determined by taking into account the thickness of the front wall 4 and the rear wall 5, and the front wall 4 and the rear wall lying on the upper surface of the base frame 2. The side wall 6 (on the right side in the example shown in the figure) that is folded over the section 5 (specifically, the longitudinal length of each frame material constituting the upper wall 61 and the lower wall 62 of the side wall 6) direction), (approximately) along the front, rear, left, and right plane, and (approximately) parallel to the base frame part 2 (specifically, to the longitudinal direction of each frame material constituting the base frame part 2) in front/side view. It is adjusted so that

Next, of the pair of side walls 6 facing each other in the left-right direction, the center of thickness of the lower wall 62 (specifically, the lower wall front and rear frame members 621) in front view and the rotation axis 64 are Side wall portion 6 to which the rotating connecting arm 63 having the longer dimension along the left-right direction between the axis position and the axis position is attached (in the example shown in the figure, dimension α2, left side wall portion 6; see FIG. 8) ) is folded over the front wall 4 and rear wall 5 that are lying on the upper surface of the base frame section 2 (in the example shown in the figure, on the right side) side wall 6 .

Next, the upper wall part 61 of the side wall part 6 is shifted along the left-right direction with the side on which the rotation connector 7 is attached facing the outside of the base frame part 2 (that is, the right side in FIG. 11). It will be done. As a result, the rotating member 72 of the rotating connector 7 rotates to a position where the first through hole 724 and the second through hole 725 are aligned in the left-right direction, and the first through hole 72 of the L-shaped member 8 It enters into the space surrounded by the wall part 81 and the second wall part 82 (see FIG. 11). The upper wall 61 and lower wall 62 of the side wall 6 are in contact with each other without any gap.

Here, the longer dimension α2 of the rotary connecting arm 63 takes into account the thickness of the front wall 4 and the back wall 5, and the thickness of the upper wall 61 and lower wall 62 of the side wall 6. It is folded over the front wall 4 and rear wall 5 that are lying on the upper surface of the base frame section 2. It is folded over the side wall 6 (on the right side in the example shown) (in the example shown in the figure). , the left side) side wall 6 (specifically, the longitudinal direction of each of the frame members forming the upper wall 61 and the lower wall 62 of the side wall 6) is (approximately) along the front, rear, left and right planes, It is adjusted so that it is (approximately) parallel to the base frame portion 2 (specifically, to the longitudinal direction of each frame member constituting the base frame portion 2) in front/side view.

As described above, the base frame part 2 and the side wall part 6 (on the right side in the example shown in the figure) which is folded over the front wall part 4 and the back wall part 5 which are lying on the upper surface of the base frame part 2 and the side wall 6 (on the left side in the example shown in the figure), which is folded over the side wall 6, are folded parallel to each other on the upper surface of the base frame section 2, and Since the upper wall 61 and the lower wall 62 of the container 6 are folded in contact with each other without a gap, the gap between the members is minimized, and the height dimension of the container truck 1 in the folded state is unnecessarily increased. The above-mentioned members are folded together without any problem.

With the above steps, the folding work of the container truck 1 is completed.

According to the container truck 1 according to the embodiment, the first contact portion 722 provided on the rotating member 72 is interposed between the upper wall portion 61 and the lower wall portion 62, so that the upper wall portion 61 and the lower wall portion 62 Since a gap S is formed between the upper wall 61 and the lower wall 62, the worker's fingers are not pinched between the upper wall 61 and the lower wall 62, thereby improving safety. becomes.

According to the container truck 1 according to the embodiment, the center of rotation of the rotary connection arm 63 (that is, the axial center position of the rotating shaft 64) is offset from the lower wall portion 62 toward the inside of the base frame portion 2. Therefore, with the side wall 6 standing up with respect to the base frame 2, the side wall 6 is directed toward the outside of the base frame 2 around the center of rotation of the rotational connection arm 63. The side wall portion 6 can be made to stand on its own by generating a tilting force, and it can be assembled and folded easily and safely.

According to the container truck 1 according to the embodiment, the lengths (specifically, dimensions α1 and α2) of the rotary connecting arms 63 attached to each of the pair of side walls 6 facing each other are different from each other. Therefore, it is possible to fold the other side wall 6 on top of one of the pair of side walls 6 facing each other, which is folded over the base frame section 2. becomes.

Although the embodiments of this invention have been described above, the specific configuration is not limited to the above embodiments, and even if there are changes in the design within the scope of the gist of this invention, Included in invention.

For example, in the above embodiment, the container truck 1 is constructed by attaching wheels 3 to the container according to the present invention, but the container according to the present invention does not have wheels attached to it, but It may also be used as a stationary container/container box.

Further, in the above embodiment, the front wall 4, the rear wall 5, and the pair of side walls 6 are all rotatably connected to the base frame 2, but the container truck It is not an essential configuration in this invention that all of the front, rear, left and right walls surrounding the loading section 1 are rotatably connected to the base frame section 2; It is sufficient that at least one of the members is rotatably connected to the base frame portion 2.

Further, in the embodiment described above, the rotary connector 7 is provided on both of the pair of side wall portions 6 that face each other in the left-right direction. It may be provided only on either one of them. In this case, the side wall 6 on which the rotation connector 7 is not provided may have an upper wall 61 and a lower wall 62 rotatably connected to each other by another connector. Alternatively, instead of being divided into the upper wall 61 and the lower wall 62, the side wall 6 may be configured as an integral wall. Further, the front wall 4 and the rear wall 5 are configured to be divided into an upper wall and a lower wall, so that the rotation connector 7 is provided on the front wall 4 and the rear wall 5. It's okay. That is, in the present invention, at least one of the front, rear, left, and right walls surrounding the loading section of the container truck 1 (in the above embodiment, the front wall 4, the rear wall 5, and the pair of side walls 6) is divided into an upper wall portion and a lower wall portion, and a rotating connector 7 is provided. Note that the wall portion that is divided into the upper wall portion and the lower wall portion and on which the rotation connector 7 is provided does not have to be a wall portion that is rotatably connected to the base frame portion 2.

In the above embodiment, the side wall locking columns 26 are provided at each of the four corners of the rectangular shape in plan view of the base frame portion 2, but the side wall locking columns 26 are provided at all four corners. The installation of the pillars 26 is not an essential configuration in the present invention, and the minimum side wall locking is necessary as long as the side walls 6 can be supported so as not to fall toward the outside of the base frame section 2. It is sufficient if the pillar 26 is provided. Further, if the side wall portion locking column 26 can support the side wall portion 6 so as not to fall toward the outside of the base frame portion 2, the side wall portion locking column 26 can be used at a rectangular corner portion of the base frame portion 2 in a plan view. It may also be possible to install it in a location where there is no such device.

1 Container truck 2 Base frame portion 21 Left and right frame materials 22 Front and rear frame materials 23 Reinforcement frame materials along the front and rear direction 24 Reinforcement frame materials along the left and right direction 25 Wheel support frame material 26 Side wall locking column 27 Wire mesh 28 Hinge 3 Wheel 4 Front wall 41 Locking tool 5 Rear wall 6 Side wall 61 Upper wall 611 Upper wall front and rear frame members 62 Lower wall 621 Lower wall front and rear frame members 63 Rotating connection arm 64 Rotation shaft 65 Locking piece 7 Rotating connector 71 First connecting member 711 Mounting portion 712 Connecting portion 713 Through hole 72 Rotating member 721 Main body portion 722 First abutting portion 723 Second abutting portion 724 First through hole 725 Second Through hole 73 Second connecting member 731 Attachment portion 732 Connecting portion 733 Through hole 8 L-shaped member 81 First wall portion 82 Second wall portion

In order to solve the above problems, a container according to the present invention includes a base frame portion that is rectangular in plan view, front, rear, left and right walls surrounding the base frame portion, and at least one of the walls being an upper side wall. a rotary connector that is divided into a lower wall portion and a lower wall portion and rotatably connects the upper wall portion and the lower wall portion to each other, and the rotary connector is connected to the lower wall portion. a first connecting member fixedly attached; a second connecting member fixedly attached to the upper wall; and a first connecting member rotatably connected to the first connecting member and the second connecting member fixedly attached to the upper wall. a connecting member and a rotating member rotatably connected to each other, and the abutting portion provided on the rotating member is interposed between the upper wall portion and the lower wall portion. A gap may be formed between the upper wall and the lower wall.

Claims (3)

A base frame portion that is rectangular in plan view;
front, rear, left and right walls surrounding the base frame;
At least one of the wall portions is divided into an upper wall portion and a lower wall portion, and a rotating connector rotatably connects the upper wall portion and the lower wall portion to each other,
The rotation connector is
a first connecting member fixedly attached to the lower wall;
a second connecting member fixedly attached to the upper wall;
a rotating member rotatably connected to the first connecting member and rotatably connected to the second connecting member;
A gap is formed between the upper wall part and the lower wall part by interposing the contact part provided on the rotating member between the upper wall part and the lower wall part.
A container characterized by: The wall portion is rotatably connected to the base frame portion via a rotary connection arm,
The rotary connection arm has one end fixedly attached to a frame material constituting the wall portion, and the other end rotatably connected to the base frame portion,
The center of rotation of the rotational connection arm is offset from the wall toward the inside of the base frame,
The base frame portion is provided with a locking post that supports the frame material so that it does not fall toward the outside of the base frame portion.
The container according to claim 1, characterized in that: The lengths of the rotary connecting arms attached to each of the mutually opposing wall portions are different from each other.
The container according to claim 2, characterized in that:

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