JP7345863B2 - transport container - Google Patents

Description

The present invention relates to a transport container that can be folded to make it less bulky when not in use, and particularly relates to a transport container in which side plates are rotatable about the lower end and detachably attached to the container body.

When delivering heavy items such as metal parts to customers, it is desirable to have a structure that has high rigidity and can be lifted by a forklift or hand lift. Transport containers made of metal are often used. Although this transport container is suitable for transporting heavy objects, it generally has a rectangular parallelepiped shape and requires a large space for storage. To address this problem, several inventions and ideas have already been made regarding transport containers that can be folded to make them more compact when not in use.

Regarding containers with an assembleable structure, for example, Patent Document 1 has the title "Transportation Container and Method for Transporting the Same" and relates to a metal transportation container that can be assembled and disassembled without using tools. An invention is disclosed.
The invention disclosed in Patent Document 1 includes a bottom plate in which supporting members that also serve as legs are attached to the four corners, a front plate and a back plate that are supported by the supporting members perpendicular to the bottom plate, and It is a transportation container consisting of left and right side plates, and the front plate, the back plate, and the left and right side plates are removable from the bottom plate, and the left and right sides are arranged so that they are folded so as to overlap the bottom plate. Each face plate is rotatable around its lower end. Further, the front plate and the back plate are each composed of two flat plates that are bendably connected at the center via a hinge.
In a transport container with such a structure, depending on the shape of the items to be stored, the left and right side panels can either stand up against the bottom plate or be folded and overlap. can. Furthermore, since the front plate, the back plate, and the left and right side plates can be removed from the bottom plate, cleaning is easy.

Further, Patent Document 2 discloses an invention under the name "Folding Pallet Container" relating to a container that has a pallet at the bottom and is easy to disassemble and assemble.
The invention disclosed in Patent Document 2 is a pallet container that can be transported using a forklift or the like, and includes a resin pallet that is rectangular in plan view and has hinges attached to each of two opposing sides. Two hinge side plates are attached to the resin pallet using hinges so that they can be folded down onto the resin pallet, and two hinge side plates whose ends are inserted into vertical grooves formed at both ends of the hinge side plates. It includes a free side plate, a locking mechanism for fixing the hinge side plate and the free side plate arranged at right angles, and a top plate that is placed over the box formed by the two sets of the hinge side plate and the free side plate.
In a pallet container with such a structure, only two side plates are connected to the resin pallet via hinges, making it foldable, so four side plates are connected to the resin pallet via hinges. It has the advantage of being cheaper to manufacture than a structure in which two parts are connected. Furthermore, the above structure is easier to fold and assemble than a structure in which the four side plates can be removed separately from the resin pallet.

Japanese Patent Application Publication No. 2006-76646 Japanese Patent Application Publication No. 2008-24344

The invention disclosed in Patent Document 1 has a structure in which the left and right side plates maintain the upright state of the front plate and the back plate with respect to the bottom plate, and when the left and right side plates are removed, the container does not function as a container. In other words, when this transportation container accommodates an article that has a part that protrudes from the bottom plate when placed on the bottom plate, the front plate or back plate is removed from the bottom plate in order to avoid interference with the part. This poses a problem in that it cannot be used to transport such items because it does not function as a container. Additionally, since the structure does not allow for stacking other shipping containers on top of each other with items stored inside, this invention has the problem of requiring a large space for storage and transportation. was there.

Regarding the invention disclosed in Patent Document 2, if at least one of the hinge side plate and the free side plate is removed from the resin pallet in order to avoid interference with the above-mentioned parts when accommodating the above-mentioned article, the container cannot be used as a container. There was a problem in that it could not be used to transport such goods because it did not function. In addition, the invention does not have a structure that allows other pallet containers to be stacked on top of each other with goods stored inside, so there is a problem in that a large space is required for storage and transportation. Was.

The present invention has been made in response to such conventional circumstances, and has four removable side plates and can be used even when all side plates are removed, making it easy to store and transport. The purpose is to provide a transport container that does not require a large space.

In order to achieve the above object, a transport container according to a first aspect of the present invention includes a frame consisting of four square pipes having a rectangular shape in plan view, and a frame installed on the top surface of the square pipes so as to close the opening of the frame. The bottom plate, the four support legs installed at the four corners of the frame perpendicular to the bottom plate, the four pillars each supported by these four support legs, and the four pillars. Four door holders are each installed, and four side plates are each installed on top of four square pipes, each having a rectangular shape in plan view, with door fixings installed at both horizontal ends. The door holder is formed into an elongated shape parallel to the longitudinal direction of the support, and has a fitting groove for holding a door fixture inserted into the interior from above, and the side plate is It is characterized in that both ends are removably connected to two pillars via door holders.
In the first invention, since the four side plates are each individually supported by the pillars, even if any side plate is removed, the remaining side plates are maintained in an upright state by the pillars. Further, in the first invention, by removing the side plates, the device is made smaller and less bulky, and the weight is also reduced.

Further, in a second invention, in the first invention, the support has a prismatic tube shape or a prismatic shape, and has an engagement portion elongated in the longitudinal direction on the side surface, and has a lower end extending perpendicularly to the longitudinal direction. A shaft member is provided, and the support leg has an engagement groove in which the engagement portion can be placed and a shaft insertion hole through which the shaft member is inserted, which are formed to be elongated in the longitudinal direction and are arranged parallel to each other. The shaft holder has a U-shape when viewed from the side, and the longitudinal direction of the shaft holder is perpendicular to the bottom plate. The engaging portion is located outside the engaging groove when the shaft member is at the upper end of the shaft insertion hole, and is located inside the engaging groove when the shaft member is at the lower end of the shaft insertion hole. It is characterized in that it is provided at a position separated from the shaft member by a desired distance so as to be arranged at

In the second invention, when the support column is parallel to the support leg, the support column can be moved up and down, and as the support column moves, the shaft member moves inside the shaft insertion hole. When the shaft member is on the lower end side of the shaft insertion hole, the engaging portion provided on the side surface of the support leg engages with the engagement groove of the support leg, so the support shaft rotates around the shaft member. is restrained by the engagement groove. As a result, the support column cannot rotate about the shaft member, and is maintained in an upright state with respect to the bottom plate. On the other hand, when the shaft member is located at the upper end of the shaft insertion hole, the engaging portion does not engage with the engagement groove and the rotation of the column is not restricted by the engagement groove, so the column is centered around the shaft member. Rotation is possible.
That is, in the second invention, in addition to the effect of the first invention, when the support column is parallel to the support leg and the engaging portion engages with the engagement groove, the support column rotates. Although it is immovable, when the engaged state between the engagement portion and the engagement groove is released by moving the column upward, the column can rotate about the shaft member.
In addition, in the second invention, when a force is applied to the support column to cause it to rotate toward the connection part, part of that force is applied directly from the side of the support to the connection part, thereby causing the engagement to occur. This has the effect of reducing the force applied from the part to the engagement groove. Furthermore, if a force is applied to the column that causes it to rotate in the opposite direction to the connecting part while the engaging part is engaged in the engaging groove, the connecting part receives that force and the support is engaged. This has the effect of reducing the force applied from the mating portion to the engagement groove.

A third invention is based on the second invention, wherein a circular shaft hole into which a shaft member is inserted is bored at the lower end of the column, and the inner diameter of this shaft hole is larger than the outer diameter of the shaft member. The shortest distance from the inner circumferential surface of the shaft hole to the corner of the lower end of the support column is shorter than the shortest distance from the inner surface of the shaft insertion hole to the inner surface of the connecting portion.
When the inner diameter of the shaft hole is approximately equal to the outer diameter of the shaft member, the radius of the lower end of the support and part of the side surface near it is usually the distance from the center of the shaft hole to the inner surface of the connection part of the shaft holder. It is formed in an arc shape. However, in this case, the manufacturing cost of the support column increases. On the other hand, if the shortest distance from the inner peripheral surface of the shaft hole to the corner of the lower end of the strut is shorter than the shortest distance from the inner surface of the shaft insertion hole to the inner surface of the connection part, the lower end of the strut should be shaped like a circle as described above. It does not have to be formed in an arc shape. However, in this case, the support column becomes thin.
On the other hand, in the third invention, since the shortest distance from the inner circumferential surface of the shaft hole to the lower end corner of the strut is shorter than the shortest distance from the inner surface of the shaft insertion hole to the inner surface of the connection part, There is no need to form the lower end into an arc shape as described above. Since the inner diameter of the shaft hole is larger than the outer diameter of the shaft member, even if the lower end of the column is not formed into an arc shape as described above, the inner diameter of the shaft hole is approximately equal to the outer diameter of the shaft member. The pillars are not thin.

A fourth invention is a door receiver according to any one of the first to third inventions, wherein the first guide groove for guiding the door fixture to the fitting groove is parallel to the longitudinal direction of the fitting groove. It is characterized by being formed obliquely upward from a part of one inner wall surface.
In the fourth invention, the door fixing device has a structure in which the door fixing tool is arranged in the fitting groove through the first guide groove, and a part of the inner wall constituting the fitting groove is arranged in the fitting groove. It protrudes above the tool. Therefore, in the fourth invention, in addition to the effects of any one of the first to third inventions, even if the side plate is sprung up due to vibration during transportation, a part of the inner wall is fixed to the door fixing device. This has the effect of preventing the door fixture from coming off the fitting groove.

In a fifth invention, in any of the first to fourth inventions, door rotating tools are provided on both sides of the lower end of the side plate in the lateral direction, and the support leg is provided with a door holder. In this door holder, a guide hole that rotatably holds a door rotating tool installed inside is formed in an elongated manner parallel to the longitudinal direction, and a second guide hole that guides the door rotating tool to the guide hole is formed in the door holder. The guide groove is formed laterally from a part of one inner wall surface parallel to the longitudinal direction of the guide hole.
In addition to the effects of any of the first to fourth inventions, a fifth invention provides a door holder by removing the door rotating tool disposed in the guide hole from the second guide groove. This has the effect that the engagement state of the door rotating tool is released.

A sixth invention is based on the fifth invention, wherein the door rotating tool is arranged inside the guide hole and the second guide groove, and has an engagement connection part having a rectangular cross section, and the door rotation tool has a width of the guide hole. is longer than the diagonal of the cross section of the engagement connection part, and the width of the second guide hole whose two inner wall surfaces are parallel is longer than the width of at least one of the engagement connection parts, and It is characterized by being shorter than the diagonal of the connecting part.
In the sixth invention, the second guide groove is engaged only when the two side surfaces of the engagement connecting portion having a distance shorter than the width of the second guide groove are parallel to the inner wall surface of the second guide groove. The structure allows the connecting part to move. Therefore, in the sixth invention, in addition to the effect of the fifth invention, only when the door rotating tool rotates the side plate at a predetermined angle with respect to the longitudinal direction of the support leg, It has the effect of making it possible to remove it from the support leg.

A seventh invention provides a base plate having a rectangular shape in a plan view, and a base plate extending downwardly from two orthogonal side surfaces of the base plate so as to form an obtuse angle with respect to the base plate. A pair of inclined plates extending to the frame, and an inclined cup consisting of a pair of inclined plates, the inclined cup having the center of the base plate arranged on the central axis of the support leg, and the inclined cup having a pair of inclined plates when the frame is viewed from above. It is characterized in that the plate is installed at the lower end of the support leg so as to be located below the frame.
In the seventh invention, in addition to the effects of any one of the first to sixth inventions, when one transport container is lifted by a crane or a lift and stacked on top of another transport container, If either the left or right support is placed below the tilted cup, the reaction from the lower transport container occurs when the inner surface of the tilted plate of the tilted cup comes into contact with the upper edge of the support of the lower transport container. This has the effect of moving the upper transport container in the direction in which the deviation in the left-right direction between the two becomes smaller. In addition, in the seventh invention, since the inclined plate of the inclined cup is installed so that its tip protrudes inside the frame, the installation space is reduced compared to a case where the tip of the inclined plate protrudes outward from the frame. This has the effect of saving money.

In an eighth invention, in any one of the first to seventh inventions, the door fixture is composed of two types, a pair of first door fixtures and a pair of second door fixtures, and The receiver consists of two types: a first door receiver that engages with the first door fixture and a second door receiver that engages with the second door fixture, and the side plate has a rectangular shape in plan view. It consists of an upper door and a lower door each having a first door fixture and a second door fixture on both sides of the upper end in the lateral direction, and the support is provided with a first door fixture and a second door fixture. A door holder is installed, and the lower end of the upper door and the upper end of the lower door are swingably connected via a connector, and both ends of the upper door and the lower door are connected to the first door holder and the second door holder. It is characterized in that it is removably connected to two pillars via the door holder.
In the eighth invention, in addition to the effects of any one of the first to seventh inventions, a pair of first door fixtures provided on both sides of the upper end of the upper door in the lateral direction are provided. When the upper door is removed from the pair of first door holders and swung so as to overlap the lower door, only the lower door is attached to the support, and the upper part of the lower door is open. It has the effect of becoming

The first invention is that the four side plates are removable, and even if any side plate is removed, the remaining side plates are maintained in an upright state by the pillars, and can be used even when all side plates are removed. Therefore, according to the first invention, even if an article has a part that protrudes from the bottom plate when placed on the bottom plate, it can be accommodated without problems by removing the side plate that is likely to interfere with the part. .

According to the second invention, in addition to having the effects of the first invention, the support is made unrotatable during transportation of the article to ensure the fixed state of the support to the support leg, and the support is fixed during storage. It can be folded to make it less bulky. In the second invention, the simple operation of raising and lowering the support can switch the support between an unrotatable state and a rotatable state, making it possible to efficiently fold or raise the support. be able to.
Further, according to the second invention, even when a force that causes rotation is applied to the column, the load on the engagement groove is reduced, so that the engagement groove is not easily damaged. Therefore, it can be used safely for a long period of time.

According to the third invention, since it is not necessary to form the lower end of the column in an arc shape, in addition to the effect of the second invention, the manufacturing cost is reduced. Furthermore, in the third aspect of the invention, even if the lower end of the column is not formed in an arc shape, the column does not become thinner, so the column is less likely to be damaged.

According to the fourth invention, there is no fear that the side plate will come off the support even if the side plate jumps up due to vibration during transportation, so in addition to the effects of any of the first to third inventions, the vehicle etc. This has the effect that it can be loaded and transported safely.

In the inventions and devices disclosed in Patent Document 1 and Patent Document 2, when transporting a transport container or container in a folded state, the front plate and back plate removed from the bottom plate are fixed to the bottom plate or left and right side plates. It is necessary to fix the free side plate removed from the hinge side plate to the hinge side plate or the resin pallet.
On the other hand, according to the fifth invention, in addition to the effects of any one of the first to fourth inventions, the side plate is stacked on the bottom plate without being removed from the support leg, so that the side plate is not bulky. Therefore, the workability during transportation is much better than the invention described in Patent Document 1 or Patent Document 2, which requires fixing the removed front plate and free side plate to the bottom plate or hinge side plate. .

In the sixth invention, the side plate can be removed from the support leg only when the side plate is rotated to form a predetermined angle with respect to the support leg. Therefore, there is no risk that the side plate will accidentally come off from the support leg. Therefore, according to the sixth invention, in addition to the effect of the fifth invention, there is an effect that safety during use is high.

According to the seventh invention, in addition to the effects of any one of the first to sixth inventions, it is difficult for misalignment to occur when stacked, and a large space is not required for storage or transportation. It has the effect of not doing so.

According to the eighth invention, in addition to the effects of any one of the first to seventh inventions, when storing an article having a portion that protrudes from the bottom plate when placed on the bottom plate, Since it is only necessary to swing only the upper door that is likely to interfere with the relevant part so as to overlap the lower door, the workability is improved compared to the case where the entire side plate is removed from the support.

(a) is an external perspective view of a transport container according to an embodiment of the present invention, and (b) is an external perspective view of the container main body shown in FIG. (a) is a diagram showing a state in which the bottom plate is removed in FIG. 1(b), and (b) and (c) are enlarged views of the support legs shown in FIG. 1(a). (a) and (b) are views showing a state in which the lower door holder and reinforcing tool are removed from the support legs in FIGS. 2(b) and 2(c), respectively. (a) and (b) are enlarged views of the lower door holder and reinforcement shown in FIGS. 2(b) and 2(c), respectively, and (c) and (d) are It is an enlarged view of the shaft member shown in FIG.2(c). (a) and (b) are enlarged views of an upper door receiver and a lower door receiver, respectively, and (c) and (d) are enlarged views of the support column shown in FIG. 1. (a) and (b) are side views showing the support leg of FIG. 2(b) connected to the column of FIG. 5(a), and (c) and (d) are side views of the support leg of FIG. FIG. 6 is a side view showing the support leg of FIG. 5B connected to the support leg of FIG. (a) and (b) are enlarged sectional views showing the connection portion between the support leg and the support column in FIG. 6(b). (a) and (b) are views showing a state in which the inner diameter of the shaft hole is approximately equal to the outer diameter of the shaft member in the support shown in FIG. 7(a) or FIG. 7(b). (a) is a plan view of the upper door and lower door shown in FIG. It is a side view of (a), and (d) is a figure which shows the state where the upper door was swung so that it may overlap with the lower door in the same figure (c). (a) and (d) are enlarged views of the part of the column in Fig. 5(c) or 5(d) where the upper door holder is attached, and (b) is an enlarged view of the upper door fixing. It is an external perspective view of a tool, and (c) and (e) are figures showing the state where the upper door receiving tool was seen perpendicularly to the field in which a fitting groove was provided. (a) is an enlarged view of the part of the column shown in FIG. 5(c) where the lower door holder is attached, and (b) is an enlarged view of the lower door holder attached to the side where the fitting groove is provided. FIG. (a) and (d) are enlarged views of the part of the support leg in Fig. 2 (a) to which the lower door holder is attached, (b) is an external perspective view of the door rotation tool, and (c) FIG. 2 is a diagram showing the lower door holder viewed perpendicularly to the surface in which the guide hole is provided. (a) thru|or (c) are a perspective view, a top view, and a side view of the inclined cup shown in FIG.2(b) or FIG.2(c), respectively. (a) is a diagram showing a state where another transport container is being stacked on top of one transport container, and (b) and (c) are enlarged sections of F and G in the same figure (a), respectively. FIG. (a) and (b) are diagrams showing a state in which the transport container has moved to the left in FIGS. FIG. 3 is a diagram showing how transport containers are stacked.

The transport container of the present invention will be specifically explained using FIGS. 1 to 15.
In addition, in the following description, the transport container of the present invention is made of metal, but the transport container of the present invention is not limited to metal. For example, if rigidity and strength are not required for transporting lightweight items, plastic may be used, or when lightweighting and strength are required, or when rigidity and strength are required for transporting heavy items. It is also possible to make it made of fiber-reinforced plastic. The functions and effects of the metal transport container described below are also exhibited in the plastic transport container as well. In addition, in the following explanation, it is assumed that the transport container is actually used, that is, it is placed on a horizontal place, and the terms "upper" and "lower", "vertical direction" and "horizontal direction" are used. ” and other expressions are used.

FIG. 1(a) is a perspective view showing an example of the external appearance of the transport container 1 according to the embodiment of the present invention, and FIG. 1(b) is a perspective view showing the external appearance of the container body 2 shown in FIG. 1(a). ing. Moreover, FIG. 2(a) shows a state in which the bottom plate 8 is removed in FIG. 1(b), and FIGS. 2(b) and 2(c) show the support legs 3a and 3b shown in FIG. 2(a). It is an enlarged view.
3(a) and 3(b) show a state in which the lower door holder 11 and the reinforcing member 13 are removed from the support legs 3a, 3b in FIGS. 2(b) and 2(c), respectively. Moreover, FIGS. 4(a) and 4(b) are enlarged views of the lower door holder 11 and reinforcing tool 13 shown in FIGS. 2(b) and 2(c), respectively, and FIG. 4(c) 4(d) is an enlarged view of the shaft member 10 shown in FIG. 2(b) and FIG. 2(c). Furthermore, FIGS. 5(a) and 5(b) are enlarged views of the upper door holder 22 and the lower door holder 24, respectively, and FIGS. 5(c) and 5(d) are enlarged views of the upper door holder 22 and the lower door holder 24, respectively. It is an enlarged view of pillars 4a and 4b.

As shown in FIGS. 1(a) and 1(b), a transport container 1 having a rectangular shape in plan view is an iron box with an open top, and a rectangular bottom plate 8 is joined to the top of a frame 2a. Two pairs of support legs 3a and 3b are installed at the four corners of the container body 2. Further, struts 4a and 4b are connected to the support legs 3a and 3b, respectively, and a pair of upper doors 5a and 5b and a pair of lower doors 6a and 6b are respectively attached to the container body 2 via these struts 4a and 4b. There is. That is, the upper doors 5a, 5b and the lower doors 6a, 6b constitute side plates of the transport container 1.
The lower ends of the pair of support legs 3a and 3b are connected to each other by an elongated flat plate member 7a installed parallel to each other. Further, the space between the frame 2a and the flat plate 7a is made up of a cylindrical structure that is erected approximately in the longitudinal center of the flat plate 7a so as to be parallel to the vertical direction, and whose upper end is connected to the lower surface of the frame 2a. By being partitioned by the connecting member 7b, an insertion hole is formed through which a claw of a forklift or a hand lift can be inserted. That is, in order to enable transportation by a forklift or hand lift, the transportation container 1 is provided with a pallet at the bottom of the container body 2, which is made up of a frame 2a, support legs 3a, 3b, a flat plate 7a, and a connecting member 7b. ing.
In addition, although the above-mentioned pallet is capable of inserting the claws of a forklift or a handlift from two directions, it is not limited to such a structure. Therefore, the structure may be such that the claws of a forklift or hand lift can be inserted from four directions. Further, in this embodiment, the transport container 1 is made of iron, but its material is not limited to iron. For example, the transport container 1 may be made of a metal other than iron, such as stainless steel or aluminum. .

As shown in FIG. 2(a), the frame 2a includes four square pipes 9a installed to form each side of a rectangle when viewed from above, and four square pipes 9a installed inside the above-mentioned rectangle to form a lattice shape. It consists of four square pipes 9b that connect two parallel square pipes 9a, 9a to each other. Note that the number of square pipes 9b is not limited to four, but can be changed as appropriate.
Further, the support legs 3a and 3b installed at the vertices of the rectangle when viewed from above are connected to each other via a square pipe 9a. The aforementioned bottom plate 8 is joined to the upper surfaces of the four square pipes 9a so as to close the aforementioned rectangular openings.
As shown in FIGS. 2(b) and 2(c), the support legs 3a and 3b are connected to a shaft member 10 used for connecting the support columns 4a and 4b to the container body 2, which will be described later with reference to FIG. 4(a). As shown in FIG. , a reinforcing tool 13 installed between the lower door holder 11 and the shaft holders 12a, 12b, and an inclined cup 14 installed at the lower end of the shaft holders 12a, 12b.
Furthermore, as shown in FIGS. 3(a) and 3(b), the support legs 3a and 3b have a substantially rectangular plate shape in plan view, and have a lid 15 having a through hole 15a in the center and a lid 15 that closes the upper part. A lid 15 is joined to the upper end thereof, and a square pipe 9c is provided erected on the upper surface 14a of the inclined cup 14.
The shaft holders 12a and 12b have a structure in which plate materials are bent, and the upper part, which has a U-shape when viewed from the side, has a pair of shaft holders 16a and 16b which are arranged in parallel and have a rectangular shape when viewed from above, and the shaft holder 16a. , 16b, and has a rectangular shape in plan view. Further, the lower portions of the shaft holders 12a and 12b, which are L-shaped in side view, are constituted by two vertically arranged support parts 16d and 16e.

A shaft insertion hole 16f into which the shaft member 10 is inserted, and an engagement groove 16g having a U-shape in plan view are formed in the pair of shaft holding portions 16a and 16b in an elongated manner parallel to the longitudinal direction from the upper end. Note that the shaft insertion hole 16f is also elongated in parallel with the longitudinal direction, and the upper and lower ends of the shaft insertion hole 16f are formed in an arc shape having a radius of curvature larger than the outer diameter of the shaft member 10. That is, the shaft insertion hole 16f has a structure in which the shaft member 10 is held rotatably and slidably along the longitudinal direction of the shaft holding parts 16a and 16b from the upper end to the lower end.
In the shaft holder 12a, the shaft holding part 16a is perpendicular to the support part 16d, but the connecting part 16c and the shaft holding part 16b form the same plane as the support parts 16d and 16e, respectively. Further, in the shaft holder 12b, the shaft holder 16b is perpendicular to the support section 16e, but the shaft holder 16a and the connecting section 16c are on the same plane as the support sections 16d and 16e, respectively.
The shaft holders 12a, 12b are arranged so that the shaft holders 16a, 16b and the connecting part 16c are connected to the three shafts of the square pipe 9c in a state where the longitudinal direction of the pair of shaft insertion holes 16f, 16f matches the longitudinal direction of the square pipe 9c. The supporting portions 16d and 16e are arranged so as to surround the side surfaces, and parts of the supporting portions 16d and 16e are respectively joined to two vertically arranged side surfaces among the three side surfaces.

As shown in FIG. 4(a), the lower door holder 11 is formed by bending a rectangular plate multiple times on one side, and is provided with a guide hole 18a and a guide groove 18b, and one end is at a right angle. The other ends of a pair of lower door holding parts 17a, 17a each having a joint part 17b bent as shown in FIG.
The pair of lower door holding parts 17a, 17a are arranged so that two parallel planes are orthogonal to each other, and the guide hole 18a is formed elongated in a direction parallel to these two planes, and is formed into a guide groove. The guide hole 18b is formed so as to branch from one of the inner wall surfaces parallel to the longitudinal direction of the guide hole 18a and partially reach the joint portion 17b.

As shown in FIG. 4(b), the reinforcing tool 13 has a structure in which one end 13a is a substantially rectangular plate with two chamfered corners, and the end 13a is bent at about 45 degrees. In addition, in the lower door holder 11, the lower ends 11a of the pair of lower door holders 17a and 17a are joined to the upper surfaces of the ends of the square pipes 9a and 9b, respectively, and the lower ends 11a of the lower door holders 17a and 17a are joined to the upper surfaces of the ends of the square pipes 9a and 9b, respectively, and a pair of joints are joined to the two side surfaces of the square pipe 9c. The portions 17b, 17b are respectively joined. The reinforcing tool 13 is installed between the lower door holding part 17a of the lower door holding tool 11 and the side surface of the square pipe 9c.
As shown in FIGS. 4(c) and 4(d), the shaft member 10 has a cylindrical shape with a head 19a provided at one end and a through hole (not shown) bored in the diametrical direction at the other end. A shaft main body 19, a pair of washers 20, 20 whose inner diameter is larger than the outer diameter of the shaft main body 19, smaller than the outer diameter of the head 19a, and whose outer diameter is larger than the outer diameter of the head 19a, and a shaft. A retainer 21 is provided to be inserted into the through hole of the main body 19. Further, the inner diameter of the shaft body 19 is smaller than the width of the shaft insertion holes 16f, 16f of the shaft holders 12a, 12b, and the outer diameter of the washer 20 is smaller than the width of the shaft insertion holes 16f, 16f of the shaft holders 12a, 12b. It's also big.

As shown in FIG. 5(a), the upper door holder 22 is formed by bending a rectangular plate multiple times on one side, and is provided with a fitting groove 23a and a guide groove 23b, and one end is It has a structure in which the other ends of a pair of upper door receiving parts 22a, 22a, which are bent at right angles and each provided with a joint part 22b, are connected to each other via a connecting part 22c.
The pair of upper door receiving parts 22a, 22a are arranged so that two parallel planes are orthogonal to each other, and the fitting groove 23a is formed to be elongated in a direction parallel to these two planes. The guide groove 23b also has a first opening 23c (see FIG. 10(a)) provided in a part of one inner wall surface parallel to the longitudinal direction of the fitting groove 23a, and a first opening 23c (see FIG. 10(a)) of the upper door receiving portion 22a. It is formed obliquely upward from the fitting groove 23a so as to connect the second opening 23d (see FIG. 10(a)) provided at the upper end.

As shown in FIG. 5(b), the lower door holder 24 is formed by bending a rectangular plate multiple times on one side, and each has a fitting groove 25 and one end is bent at a right angle. The other ends of a pair of lower door receiving portions 24a, 24a each provided with a joint portion 24b are connected to each other via a connecting portion 24c.
The pair of lower door receiving parts 24a, 24a are arranged so that two parallel planes are orthogonal to each other, and the fitting groove 25 is formed to be elongated in a direction parallel to these two planes. Of the two inner wall surfaces parallel to the longitudinal direction, the length of the fitting groove 25 along the longitudinal direction of the inner wall surface on the connecting portion 24c side is the same as the length along the longitudinal direction of the inner wall surface on the connecting portion 24b side. It has a shorter structure.

As shown in FIGS. 5(c) and 5(d), the pillars 4a and 4b have a substantially rectangular plate shape in plan view, and have a lid 26 having a through hole (not shown) in the center and a hemispherical head. The bolt 27 is inserted into the through hole of the lid 26 with the part exposed, the square pipe 9d with the lid 26 joined to the upper end so as to close the upper part, the upper door holder 22 and the lower door holder 24. We are prepared. In addition, in the vicinity of the lower end of the square pipe 9d, a circular shaft hole 28a into which the shaft body 19 of the shaft member 10 is loosely inserted is bored in a pair of parallel side surfaces. Furthermore, an engaging portion 28b is formed elongated in parallel to the longitudinal direction of the pillars 4a, 4b on one of the two side surfaces in which the shaft hole 28a is bored, and an engaging portion 28b is formed in an elongated manner parallel to the longitudinal direction of the columns 4a, 4b. A lower door receiver 24 is installed, and an upper door receiver 22 is also installed near the upper end of each pipe 9d.
The upper door holder 22 has a pair of joints 22b, 22b each connected to two vertically arranged sides out of the four sides of the square pipe 9d, and the lower door holder 24 has a A pair of joint parts 24b, 24b are respectively joined to the two side surfaces to which the pair of joint parts 22b, 22b of the door receiver 22 are joined. Furthermore, among the four side surfaces of the square pipe 9d, the pair of fitting grooves 23a, 23a of the upper door holder 22 are arranged close to the two side surfaces, and the pair of fitting grooves 25 of the lower door holder 24 are arranged close to each other. , 25 are arranged close to each other.
The upper door holder 22 and the lower door holder 24 have a pair of fitting grooves 23a, 23a and a pair of fitting grooves 25, 25 disposed close to each other, and one of the two side surfaces is formed with an engaging portion 28b. They are respectively attached to the supports 4a and 4b so as to match the side surfaces of the square pipe 9d. However, in the pillars 4a and 4b, the side surface where the pair of fitting grooves 23a, 23a of the upper door holder 22 and the pair of fitting grooves 25, 25 of the lower door holder 24 are arranged close to each other connects the square pipe 9d from above. When viewed, it is 90 degrees shifted.

6(a) and 6(b) are side views showing a state in which the support leg 3a of FIG. 2(b) is connected to the support column 4a of FIG. 5(c), and FIG. 6(c) and FIG. 6(d) is a side view showing a state in which the support leg 3b of FIG. 2(c) is connected to the column 4b of FIG. 5(d). In addition, in FIG.6(b) and FIG.6(d), the state which the support|pillars 4a and 4b rotated centering on the shaft member 10 is shown by the broken line.
As already mentioned, the support legs 3a, 3b are connected to the columns 4a, 4b via the shaft member 10, and the shaft member 10 is inserted into the shaft insertion hole 16f of the shaft holder 12a, 12b. It is slidable in the vertical direction between the upper end and the lower end of the hole 16f. As shown in FIGS. 6(a) and 6(c), when the shaft member 10 is at the lower end position inside the shaft insertion hole 16f, the lower part of the engaging portion 28b is located inside the engaging groove 16g. Ru. In this case, since the engagement groove 16g only allows the engagement part 28b to move in the vertical direction and restricts the rotation of the engagement part 28b, the support legs 3a, 3b move upward relative to the columns 4a, 4b. Only movement is possible, and rotation about the shaft member 10 is disabled.
On the other hand, as shown in FIGS. 6(b) and 6(d), when the shaft member 10 is at the upper end position inside the shaft insertion hole 16f, the lower part of the engaging portion 28b is in the engaging groove 16g. Since it is disposed outside, rotation of the engaging portion 28b is not restricted by the engaging groove 16g. As a result, the support legs 3a and 3b are able to rotate around the shaft member 10 until the side surface of the square pipe 9d comes into contact with the end 13a of the reinforcing tool 13 (see FIG. 4(b)).

That is, in the transport container 1, if the supports 4a, 4b are in a state parallel to the supporting legs 3a, 3b, the supports 4a, 4b can be moved in the vertical direction; Accordingly, the shaft member 10 moves vertically inside the shaft insertion hole 16f. When the shaft member 10 is on the lower end side of the shaft insertion hole 16f, the engaging portions 28b provided on the side surfaces of the supports 4a, 4b engage with the engaging grooves 16g of the support legs 3a, 3b. Rotation of the struts 4a, 4b about the shaft member 10 is restricted by the engagement groove 16g. As a result, the struts 4a and 4b cannot rotate about the shaft member 10, and are maintained in an upright state with respect to the bottom plate 8. On the other hand, when the shaft member 10 is located at the upper end side of the shaft insertion hole 16f, the engaging portion 28b does not engage with the engaging groove 16g, and the rotation of the columns 4a and 4b is not restricted by the engaging groove 16g. Therefore, the struts 4a and 4b can rotate around the shaft member 10.
In this way, in the transport container 1, when transporting articles, the support columns 4a, 4b can be made unrotatable to ensure that the support columns 4a, 4b are fixed to the support legs 3a, 3b. On the other hand, during storage, the supports 4a and 4b can be folded to save bulk. By using the transport container 1, a simple operation of raising and lowering the columns 4a, 4b switches between a state in which the columns 4a, 4b cannot rotate and a state in which they can rotate. The work of folding and standing up 4a and 4b can be performed efficiently.

In addition, in the transport container 1 having the above structure, if a force is applied to the columns 4a, 4b to rotate them toward the connecting portions 16c of the shaft holders 12a, 12b provided on the support legs 3a, 3b, A portion of the force is applied directly to the connecting portion 16c from the side surfaces of the struts 4a, 4b, thereby reducing the force applied from the engaging portion 28b to the engaging groove 16g. Furthermore, when a force is applied to the columns 4a, 4b to rotate them in the opposite direction to the direction of the connecting part 16c while the engaging part 28b is engaged with the engaging groove 16g, the force is removed. By being received by the portion 16c, the force applied from the engaging portion 28b to the engaging groove 16g is reduced. In this way, the transport container 1 has a structure in which the engagement groove 16 is less likely to be damaged by reducing the load applied to the engagement groove 16g even when a rotational force is applied to the columns 4a and 4b. Therefore, it can be used safely for a long period of time.

7(a) and 7(b) are enlarged views of the portion where the support leg 4a is connected to the support leg 3a in FIG. 6(b). 3a and a cross-sectional view of the support column 4a. Moreover, FIGS. 8(a) and 8(b) show a state in which the inner diameter of the shaft hole 28a is approximately equal to the outer diameter of the shaft member 10 in the struts 4a and 4b shown in FIG. 7(a) or 7(b). FIG.
As shown in FIGS. 7(a) and 7(b), the inner diameter of the shaft hole 28a provided in the square pipe 9d of the struts 4a, 4b is larger than the outer diameter of the shaft body 19 of the shaft member 10. Further, the shortest distance _L1 from the inner peripheral surface of the shaft hole 28a to the lower end corner of the square pipe 9d is shorter than the shortest distance _L2 from the inner surface of the shaft insertion hole 16f to the inner surface of the connecting portion 16c. That is, the square pipes 9d of the struts 4a and 4b have a structure in which the corner portions at the lower ends do not interfere with the inner surface of the connecting portion 16c when the square pipes 9d are rotated about the shaft member 10.
When the inner diameter of the shaft hole 28a is approximately equal to the outer diameter of the shaft body 19 of the shaft member 10, as shown in FIG. Interference between the lower end of the square pipe 9d and the inner surface of the connecting portion 16c can also be avoided by forming it in an arc shape with a radius of distance _L3 from the center of the shaft hole 28a to the inner surface of the connecting portion 16c of the shaft holder 12a. Ru. However, in this case, the manufacturing cost of the supports 4a, 4b increases.
As already explained using FIGS. 7(a) and 7(b), the shortest distance _L1 from the inner peripheral surface of the shaft hole 28a to the lower end corner of the square pipe 9d is from the inner surface of the shaft insertion hole 16f. When it is shorter than the shortest distance _L2 to the inner surface of the connecting portion 16c, the lower end of the square pipe 9d does not need to be formed into an arc shape as shown in FIG. 8(a). However, in this case, the square pipe 9d becomes thinner as shown in FIG. 8(b).

On the other hand, if the inner diameter of the shaft hole 28a is larger than the outer diameter of the shaft member 10 as shown in FIG. 7(a) or FIG. 7(b), the lower end of the square pipe 9d is shown in FIG. 8(a). Even when the square pipe 9d is not formed in an arc shape as shown in FIG. 8B, the square pipe 9d does not become as thin as the state shown in FIG. In this manner, in the transport container 1 of the present invention, there is no need to form the lower ends of the square pipes 9d constituting the support columns 4a, 4b into an arc shape, so that manufacturing costs can be reduced. Furthermore, in the transport container 1, unlike in the case where the inner diameter of the shaft hole 28a is approximately equal to the outer diameter of the shaft member 10, there is no need to make the square pipe 9d thinner, so that the supports 4a and 4b are less likely to be damaged.

FIG. 9(a) is a plan view of the upper door 5a and lower door 6a shown in FIG. 1(a), and FIG. 9(b) is an enlarged perspective view of the connecting portion of the upper door 5a and lower door 6a. . 9(c) is a side view of FIG. 9(a), and FIG. 9(d) shows a state in which the upper door 5a is swung so as to overlap the lower door 6a in FIG. 9(c). There is. In addition, although only the upper door 5a and the lower door 6a are shown in FIGS. 9(a) to 9(d), the upper door 5a, the lower door 6a, the upper door 5b, and the lower door 6b have different horizontal lengths. The only difference is that the other structures are the same. Therefore, although a description of the upper door 5b and the lower door 6b will be omitted here, the functions and effects of the upper door 5a and the lower door 6a described below are similarly exhibited in the upper door 5b and the lower door 6b.
As shown in FIG. 9(a), the upper door 5a and the lower door 6a each include four square pipes 9e installed so as to constitute each side of a rectangle when viewed from above. Rectangular panels 29a and 29b are respectively joined to one side of the square pipe 9e.
On the panel 29a of the upper door 5a, handles 30 made of plate material bent at right angles are installed at two upper corners, respectively. Additionally, door fixtures 31a are installed at both ends of the square pipe 9e on the upper side of the upper door 5a, and a substantially U-shaped connection is provided near both ends of the square pipe 9e on the lower side of the upper door 5a. A rod 32 is installed respectively. The connecting rod 32 is connected to the side surfaces of the square pipe 9e at its side surfaces near both ends so that both ends thereof face upward and the portions parallel to the lateral direction of the upper door 5a protrude downward from the upper door 5a. has been done.
On the panel 29b of the lower door 6a, U-shaped members 33 made of a plate with both ends bent at right angles are installed at two upper corners, respectively. Additionally, door fixing tools 31b are installed at both ends of the square pipe 9e on the upper side of the lower door 6a, and door rotating tools 34 are installed at both ends of the square pipe 9e on the lower side of the lower door 6a. There is.

As shown in FIG. 9(b), the U-shaped member 33 has a portion parallel to the lateral direction of the above-mentioned upper door 5a that forms a part of the connecting rod 32 arranged inside, and both ends of the U-shaped member 33 are connected to the panel 29b. are connected to each other. In this way, the upper door 5a and the lower door 6a are connected via the connecting rod 32 and the U-shaped member 33, so the upper door 5a cannot be moved laterally or vertically with respect to the lower door 6a. It is in a state of However, the swinging of the upper door 5a relative to the lower door 6a is not restricted by the connecting rod 32 and the U-shaped member 33. Therefore, by swinging the upper door 5a, for example, the upper door 5a in a state where the upper end is placed on the upper side as shown in FIG. 9(c) can be moved to the lower side as shown in FIG. It can be kept in place.
That is, since the upper door 5a and the lower door 6a have a structure in which they are swingably connected via a connecting tool consisting of a connecting rod 32 and a U-shaped member 33, the upper door 5a and the lower door 6a are provided at both ends of the upper door 5a. When the pair of door fixtures 31a, 31a are removed from the pair of upper door receivers 22, 22, respectively, the upper door 5a can be swung so as to overlap the lower door 6a. In this way, only the lower door 6a is attached to the supports 3a and 3b, and the upper part of the lower door 6a is left open. Therefore, when storing an article in the transport container 1 that has a part that protrudes from the bottom plate 8 when placed on the bottom plate 8, only the upper door 5a or 5b that is likely to interfere with the part is replaced with the lower door 6a or the upper door 5b. By simply swinging the part so as to overlap it with the lower door 6b, it is possible to prevent the part from interfering with the upper door 5a or 5b. In this way, in the transport container 1, interference with the above-mentioned parts of the article can be prevented without removing the upper door 5a or 5b, which makes the work easier compared to the conventional technology that requires removing the entire side plate from the support. Good sex.

10(a) and 10(d) are enlarged views of the parts of the columns 4a, 4b in FIG. 5(c) or 5(d) to which the upper door holder 22 is attached. b) shows the appearance of the door fixture 31a installed on the upper doors 5a, 5b. Further, FIGS. 10(c) and 10(e) show the upper door receiver 22 viewed perpendicularly to the surface (upper door receiver 22a) in which the fitting groove 23a is provided. In addition, in FIG. 10(c) and FIG. 10(e), the external shape of the cross section of the door fixture 31a (cross section taken along line A-A in FIG. 10(b)) is shown by a solid line and a broken line, and FIG. 10(d) ), the outer shapes of the upper door 5b and the door fixture 31a are shown with broken lines. Furthermore, although FIGS. 10(a) and 10(d) show how the upper door 5b is attached to the column 4a or how the upper door 5a is attached to the column 4b, the upper door 5a is attached to the column 4a. Since the functions of the door fixing tool 31a are the same even when the upper door 5b is attached to the support column 4b, a description thereof will be omitted.

As shown in FIGS. 10(a) and 10(b), the door fixture 31a protrudes forward from the front surface 35b of the substantially rectangular parallelepiped joint 35, where the rear surface 35a is joined to the end of the square pipe 9e. An engaging connecting portion 37a and an engaging portion 36 are formed in the engaging connecting portion 37a, and the engaging connecting portion 37a connecting the joint portion 35 and the engaging portion 36 has a rectangular cross section.
In addition, since the width of the engagement connection part 37a is shorter than the minimum width of the interval between the guide grooves 23b of the upper door receiver 22, the door fixture 31a is connected to the engagement connection part as shown by the broken line in FIG. 10(c). 37a can pass through the guide groove 23b. Furthermore, since the width of the engagement connection portion 37a is shorter than the width of the fitting groove 23a, the engagement connection portion 37a moved from the guide groove 23b to the fit groove 23a is shown by a solid line in FIG. 10(c). It is arranged inside the fitting groove 23a in such a state. Further, since the length of the diagonal line of the engagement connection portion 37a is longer than the width of the fitting groove 23a, rotation of the engagement connection portion 37a is restricted by the fit groove 23a. In this case, the door fixture 31a cannot rotate relative to the upper door receiver 22. Thereby, the upper door 5b is unrotatably connected to the support 4a, or the upper door 5a is connected to the support 4b via the door fixture 31a (see FIG. 10(d)).

At this time, a part of the inner wall constituting the fitting groove 23a (locking part 23e shown in FIG. 10(e)) is in a state of protruding above the engagement connecting part 37a of the door fixture 31a. Therefore, for example, when the upper doors 5a and 5b are flipped up due to vibrations generated as the vehicle travels when the transport container 1 is loaded onto a vehicle or the like and transported, the engagement connecting portion 37a is moved to the locking portion 23e. come into contact with This prevents the door fixture 31a from coming off the fitting groove 23a and coming off the upper door receiver 22.
That is, in the upper door holder 22, when the upper doors 5a, 5b are flipped upward, the locking part 23e of the upper door holder 22 comes into contact with the engagement connection part 37a, so that the door fixture 31a is not fitted. Separation from the groove 23a is prevented. In this way, even if the upper doors 5a, 5b are flipped upward, the transport container 1 is difficult to be disconnected from the columns 4a, 4b, so it has the effect of being highly safe when transported by vehicle, etc. are doing.
In addition, in the state shown in FIG. 10(d), the tip 36a of the engaging portion 36 engages with the upper door receiving portion 22a of the upper door receiving tool 22, so that the upper door fixing tool 31a is attached to the upper door receiving tool 22. Movement in the direction away from is restricted. As a result, the upper door 5b cannot move away from the support 4a, or the upper door 5a cannot move away from the support 4b.

FIG. 11(a) is an enlarged view of the part of the support 4a in FIG. 5(c) where the lower door holder 24 is attached, and FIG. 11(b) shows the lower door holder 24 in the fitting groove. 25 is shown perpendicularly to the surface (lower door receiving portion 24a). In addition, in FIG. 11(b), the outer shape of the cross section of the square pipe 9e of the lower door 6b (cross section taken along the line BB in FIG. 11(a)) and the outer shape of the door fixture 31b are shown by solid lines and broken lines. . In addition, although FIG. 11(a) shows how the lower door 6b is attached to the lower door receiver 24 using the column 4a as an example, there are also cases where the lower door 6a is attached to the column 4a or the lower door 6a is attached to the column 4b. , 6b are attached, the functions of the lower door receiver 24 are the same, so a description thereof will be omitted.
As shown in FIG. 11(a), the cross section of the square pipe 9e is approximately rectangular, and the width of this rectangle is shorter than the width of the door fixture 31b, which is approximately rectangular parallelepiped. Therefore, the door fixture 31b has one side joined to the end of the square pipe 9e with both lateral ends projecting beyond the side surface of the square pipe 9b.
In addition, since the width of the cross section of the square pipe 9e is shorter than the minimum width of the interval between the fitting grooves 25 of the lower door holder 24, the square pipe 9e is The square pipe 9e and the door fixture 31b can be placed in a state shown by solid lines in FIG. 11(b) by inserting them straight into the fitting groove 25 from above the fixture 24.
Note that the square pipe 9e has a maximum cross-sectional width L ₄ (see FIG. 11(b)) that is longer than the width of the fitting groove 25, and rotation of the square pipe 9e is restricted by the fitting groove 25, so that it cannot be fitted. By arranging the square pipe 9e inside the matching groove 25, the lower door 6b, which is connected to the support column 4a via the lower door receiver 24, becomes unable to rotate relative to the support column 4a. In addition, in the state shown in FIG. 11(b), the left and right protruding portions of the square pipe 9e in the door fixture 31b engage with the lower door receiving portion 24a of the lower door receiver 24, so that the door fixture 31b movement in the direction away from the lower door receiver 24 is restricted. As a result, the lower door 6b becomes unable to move in the direction away from the support column 4a.

12(a) and 12(d) show an enlarged view of the part where the lower door holder 11 is attached to the support leg 3b of FIG. 2(a), and FIG. 12(b) shows the door rotating tool. 34 is shown. Further, FIG. 12(c) shows a state in which the lower door holder 11 is viewed perpendicularly to the surface (lower door holder 17a) in which the guide hole 18a is provided. In addition, in FIG. 12(c), the outer shape of the cross section of the door rotating tool 34 (cross section taken along the line DD in FIG. 12(b)) is shown by solid lines and broken lines, and in FIG. 12(d), the outer shape of the lower door 6a is shown. The outer shape of the door rotating tool 34 is shown by a broken line. In addition, although FIGS. 12(a) and 12(d) show the lower door 6a being attached to the support leg 3b, there are also cases where the lower door 6b is attached to the support leg 3b, or the lower door is attached to the support leg 3a. Since the functions of the lower door holder 11 are the same even when 6a and 6b are attached, a description thereof will be omitted.
As shown in FIGS. 12(a) and 12(b), the door rotating tool 34 protrudes forward from the front surface 38b of a substantially rectangular parallelepiped joint 38, where the rear surface 38a is joined to the end of the square pipe 9e. As shown in FIG. There is.
Since the width of the engagement connection part 37b is shorter than the width of the guide groove 18b of the lower door holder 11, as shown by the broken line in FIG. It is possible to pass through 18b. Since the length of the diagonal line of the engagement connection portion 37b is longer than the width of the guide groove 18b, the engagement connection portion 37b cannot be rotated inside the guide groove 18b, but the connection portion between the guide groove 18b and the guide hole 18a is provided with a wide portion 18c so that the engagement connection portion 37b can be rotated.

The engagement connecting portion 37b that has been moved from the guide groove 18b to the guide hole 18a is arranged inside the guide hole 18a in a state as shown by the solid line in FIG. 12(c). At this time, since the length of the diagonal line is shorter than the width of the guide hole 18a, the engagement connecting portion 37b is rotatable inside the guide hole 18a. On the other hand, in the cross section of the rectangular engaging portion 39, the length of the diagonal line is longer than the width of the guide hole 18a, and since the engaging portion 39 engages with the lower door holding portion 17a of the lower door holding tool 11, The door rotating tool 34 is restricted from moving in the direction away from the lower door holder 11.
In this way, in the transport container 1, the lower door holder 11 has the function of holding the lower door 6a rotatably about the engagement connection portion 37b of the door rotation tool 34 as an axis.

As already mentioned, the engagement connecting portion 37b is movable from the guide hole 18a to the guide groove 18b. Therefore, by moving the engagement connection part 37b in the direction shown by arrow E inside the guide groove 18b, the engagement connection part 37b can be pulled out from the guide groove 18b. Then, when the engaging connecting portion 37b is pulled out from the guide groove 18b, the engaged state between the lower door holding portion 17a and the engaging portion 39 is released, so that the lower door 6a can be easily removed from the support leg 3b.
That is, in the transport container 1, when the door fixture 31a of the upper door 5a is pulled out from the upper door holder 22 and the door fixture 31b of the lower door 6a is pulled out from the lower door holder 24, the lower door 6a is moved around the lower end. It becomes possible to rotate. Then, when the lower door 6a is folded down and rotated to a predetermined angle as shown in FIG. 12(d), the door rotating tool 34 can be removed from the lower door holder 11. Then, when the door rotating tool 34 is removed from the lower door holder 11, the lower door 6a can be removed from the support leg 3b. In this way, in the transport container 1, the lower door 6a can be easily removed from the support legs 3b by a simple operation of rotating the lower door 6a, so that the upper door 5a and the lower door 6a can be easily removed from the support legs 4b and the support legs. 3b can be removed efficiently in a short time. Note that the guide groove 18b is inclined with respect to the horizontal, and only when the lower door 6a is rotated beyond the horizontal state to a predetermined angle such that the upper end side is lower than the lower end side, the support leg 3b It is possible to remove it from. Therefore, there is no risk that the lower door 6a will accidentally come off the support leg 3b.

In this way, in the transport container 1, not only can the upper door 5a and the lower door 6a be removed from the support column 4b and the support legs 3b, but also the upper door 5a and the lower door 6a can be removed with the lower door 6a attached to the support legs 3b. can be rotated so as to overlap with the bottom plate 8. That is, in the transport container 1, the upper door 5a and the lower door 6a, and the upper door 5b and the lower door 6b can be stacked on the bottom plate 8 without being removed from the support legs 3a and 3b, so that they are not bulky. Workability during transportation is much better than the inventions and ideas described in Patent Document 1 or Patent Document 2, in which the front plate and the free side plate must be fixed to the bottom plate and the hinge side plate.
In addition, in the transport container 1, only when the lower doors 6a and 6b are rotated to form a predetermined angle with respect to the support legs 3a and 3b, the upper door 5a and the lower door 6a, the upper door 5b and the lower door The structure is such that the support legs 6b can be removed from the support legs 3a and 3b. Therefore, there is no possibility that the upper door 5a and the lower door 6a or the upper door 5b and the lower door 6b will accidentally come off from the support legs 3a and 3b. Therefore, the transport container 1 is highly safe during use.
Furthermore, in the transport container 1, since all the upper doors 5a, 5b and the lower doors 6a, 6b are each supported individually by the supports 4a, 4b, the two pairs of upper doors 5a, 5b and the lower door 6a, Even if any of the doors 6b is removed, the remaining doors are maintained in an upright position by the supports 4a, 4b. That is, since the transport container 1 has a structure that can be used even with all the upper doors 5a, 5b and lower doors 6a, 6b removed, it has a portion that protrudes from the bottom plate 8 when placed on the bottom plate 8. This can also be done with respect to articles by removing doors that are likely to interfere with the relevant parts.

13(a) to 13(c) are a perspective view, a top view, and a side view of the inclined cup 14 shown in FIG. 2(b) or FIG. 2(c), respectively. Further, FIG. 14(a) is a diagram showing a state in which the transport container 1a is stacked on top of the transport container 1b, and FIGS. 14(b) and 14(c) are respectively F in FIG. It is a figure which expanded and showed the part and G part. Furthermore, FIGS. 15(a) and 15(b) are diagrams showing a state in which the upper transport container 1a has moved to the left in FIGS. 14(b) and 14(c), and FIG. 15(c) 1 is a diagram showing a state in which two transport containers 1a and 1b are stacked with little lateral displacement.
In addition, in FIGS. 14(a) to 14(c) and FIGS. 15(a) to 15(c), the transport container 1a and the transport container 1b are viewed perpendicularly to the upper door 5b and the lower door 6b. The operation of the inclined cup 14 will be explained by taking as an example, but the operation of the inclined cup 14 described below also applies when the transport container 1a and the transport container 1b are viewed perpendicularly to the upper door 5a and the lower door 6a. And the effect is exhibited in the same way.
As shown in FIGS. 13(a) to 13(c), the inclined cup 14 includes a base plate 40 having a circular through hole 40a and a substantially rectangular shape in a plan view. The two sides of the base plate 40 are formed by bending a wide plate at right angles, and the two surfaces located inside the L-shape are formed such that the lower end protrudes below the lower surface 40b of the base plate 40. The reinforcing material 41 joined to the base plate 40 extends downward from the two orthogonal side surfaces to which the reinforcing material 41 is not joined so as to form an obtuse angle with the lower surface 40b. It is provided with a pair of inclined plates 42, 42 having a boundary portion 42a joined to each other.
In addition, the inclined cup 14 is such that the center of the through hole 40a of the base plate 40 is arranged on the central axis of the square pipe 9c of the support legs 3a, 3b, and when the frame 2a is viewed from above, the inclined plates 42, 42 are installed at the lower ends of the support legs 3a, 3b so as to be located below the frame 2a. Note that the center of the through hole 40a coincides with the center of the base plate 40 (the intersection of the diagonal lines of the rectangle), and the central axis of the square pipe 9c makes the columns 4a and 4b parallel to the support legs 3a and 3b. It coincides with the central axis of the square pipe 9d in this case.
When stacking another transport container 1 on top of one transport container 1, first, the transport container 1 to be stacked (for convenience, referred to as transport container 1a) is lifted up by a crane or lift, and the transport to be stacked is carried out. After moving the container 1 (referred to as the transport container 1b for convenience) above, the transport container 1a is moved downward.
At this time, even if the alignment of the transport container 1a with respect to the transport container 1b is insufficient, if either one of the supports 4a, 4b is placed below the inclined cup 14, the transport can be carried out as described below. Container 1a moves in a direction where the displacement becomes smaller with respect to transport container 1b.

For example, as shown in FIGS. 14(a) to 14(c), even if the support 4a of the transport container 1b is not arranged inside the inclined cup 14 of the transport container 1a, the support 4b of the transport container 1b is 1a, as the transport container 1a moves further downward, the top end of the lid 26 installed on the support column 4b of the transport container 1b will be placed inside the tilt cup 14 of the transport container 1a. The inner surface of the inclined plate 42 of the cup 14 abuts. As a result, the inclined plate 42 of the transport container 1a receives a force as shown by arrow H from the lid 26 of the transport container 1b. Therefore, if the lateral movement of the transport container 1a is not restricted, the transport container 1a moves downward and toward the right side in the paper due to the action of the horizontal component of this force.
When the transport container 1a moves further downward from the state shown in FIGS. 14(a) to 14(c), the upper surface of the lid 26 of the transport container 1b appears as shown in FIGS. 15(a) and 15(b). The lower edge of the through hole 40a of the base plate 40 of the inclined cup 14 of the transport container 1a comes into contact with the head of the bolt 27 exposed at the top. In this case, due to the horizontal component of the force that the base plate 40 of the transport container 1a receives from the head of the bolt 27 of the transport container 1b, the transport container 1a moves downward while the base plate 40 The bolt 27 is moved toward the right side of the paper until the head of the bolt 27 is completely accommodated inside the through hole 40a. As a result, the transport containers 1a stacked on the transport container 1b are in a state where there is little lateral displacement with respect to the transport container 1b (see FIG. 15(c)).

In this way, the transport container 1 of the present invention (transport container 1a in FIGS. 14(a) and 15(c)) is similar to the other transport container 1 (transport container 1b in FIGS. 14(a) and 15(c)). ) has the effect that it is difficult for misalignment to occur when stacked on top of each other.
Note that other devices may be arranged next to the transport container 1 during storage or transport, and in this case, if the tip of the inclined plate 42 protrudes to the outside of the frame 2a, It is necessary to maintain a wide distance between devices installed next to each other. On the other hand, when the inclined cup 14 is installed at the lower end of the support legs 3a, 3b so that the tip of the inclined plate 42 protrudes inside the frame 2a, as in the above case, the inclined cup 14 is installed adjacently. There is no need to provide a large distance between the device and the device. That is, since the transport container 1 has a structure in which the inclined plate 42 of the inclined cup 14 is installed such that its tip protrudes inside the frame 2a, there is an advantage that a large space is not required for storage or transport.

The transport container of the present invention can be used to transport various parts.

1, 1a, 1b...Transportation container 2...Container body 2a...Frame 3a, 3b...Support leg 4a, 4b...Strut 5a, 5b...Upper door 6a, 6b...Lower door 7a...Flat plate material 7b...Connection member 8...Bottom plate 9a ~9e...Square pipe 10...Shaft member 11...Lower door holder 11a...Lower end 12a, 12b...Shaft holder 13...Reinforcer 13a...End 14...Slanted cup 14a...Top surface 15...Lid 15a...Through hole 16a, 16b ...Shaft holding part 16c...Connection part 16d, 16e...Support part 16f...Shaft insertion hole 16g...Engagement groove 17a...Lower door holding part 17b...Joint part 17c...Connection part 18a...Guide hole 18b...Guide groove 18c...Wide part 19...Shaft body 19a...Head 20...Washer 21...Removal stopper 22...Upper door receiver 22a...Upper door receiver 22b...Joint section 22c...Connection section 23a...Fitting groove 23b...Guide groove 23c...First Opening part 23d...Second opening part 23e...Locking part 24...Lower door receiver 24a...Lower door receiver part 24b...Joint part 24c...Connection part 25...Fitting groove 26...Lid 27...Bolt 28a...Shaft hole 28b ...Engagement part 29a, 29b...Panel 30...Handle 31a, 31b...Door fixture 32...Connecting rod 33...U-shaped member 34...Door rotation tool 35...Joint part 35a...Rear surface 35b...Front surface 36...Engagement part 36a... Tip 37a, 37b... Engagement connection part 38... Joint part 38a... Rear surface 38b... Front surface 39... Engagement part 40... Base plate 40a... Through hole 40b... Bottom surface 41... Reinforcement material 42... Inclined plate 42a... Boundary part

Claims (7)

A frame consisting of four square pipes that are rectangular in plan view,
a bottom plate installed on the top surface of the square pipe so as to close the opening of the frame;
four support legs installed at the four corners of the frame so as to be perpendicular to the bottom plate;
Four pillars each supported by these four support legs,
The four door holders installed on each of these four pillars,
It has a rectangular shape in plan view, and has door fixing devices provided at both ends in the lateral direction, and four side plates each installed on top of the four square pipes,
The door receiver is elongated in parallel with the longitudinal direction of the support, and has a fitting groove for holding the door fixture inserted into the interior from above,
Both ends of the side plate are removably connected to the two pillars via the door receiver , and
Door rotating tools are provided on both sides of the lower end of the side plate in the lateral direction, and
The support leg includes a door holder,
This door holder has
A guide hole for rotatably holding the door rotating tool installed inside is formed elongated parallel to the longitudinal direction, and
A second guide groove for guiding the door rotating tool to the guide hole is formed laterally from a part of one inner wall surface parallel to the longitudinal direction of the guide hole. container. The door rotating tool has an engagement connection part that is disposed inside the guide hole and the second guide groove and has a rectangular cross section,
The width of the guide hole is longer than a diagonal line of the cross section of the engagement connection part,
The width of the second guide groove, in which two inner wall surfaces are parallel, is longer than the width of at least one of the engaging connecting portions, and shorter than the diagonal line of the engaging connecting portion. The transport container according to claim 1 . The pillar has a rectangular tube shape or a prism shape, and has an engaging portion formed on a side surface to be elongated in the longitudinal direction, and a shaft member is provided at a lower end so as to be perpendicular to the longitudinal direction,
The support leg has a rectangular shape in which an engagement groove in which the engagement portion can be placed and a shaft insertion hole into which the shaft member is inserted are elongated in the longitudinal direction and are arranged parallel to each other. The shaft holder has a U-shape when viewed from the side, and the longitudinal direction of the shaft holder is perpendicular to the bottom plate. is set up to
The engaging portion is arranged outside the engaging groove when the shaft member is on the upper end side of the shaft insertion hole, and is arranged in the engaging groove when the shaft member is on the lower end side of the shaft insertion hole. 3. The transport container according to claim 1, wherein the transport container is provided at a position separated from the shaft member by a desired distance so as to be located inside the shaft member . A circular shaft hole into which the shaft member is inserted is bored at the lower end of the support column,
The inner diameter of this shaft hole is larger than the outer diameter of the shaft member,
4. The shortest distance from the inner circumferential surface of the shaft hole to the corner of the lower end of the support column is shorter than the shortest distance from the inner surface of the shaft insertion hole to the inner surface of the connecting portion. Transport container as described. In the door receiver, a first guide groove for guiding the door fixture to the fitting groove is formed obliquely upward from a part of one inner wall surface parallel to the longitudinal direction of the fitting groove. The transport container according to any one of claims 1 to 4 , characterized in that: a base plate having a rectangular shape in plan view;
a pair of inclined plates extending downward from two orthogonal sides of the base plate at an obtuse angle with respect to the base plate;
The inclined cup is configured such that the center of the base plate is arranged on the central axis of the support leg, and the pair of inclined plates are arranged below the frame when the frame is viewed from above. The transport container according to any one of claims 1 to 5 , wherein the transport container is installed at the lower end of the support leg. The door fixtures include two types: a pair of first door fixtures and a pair of second door fixtures, and
The door holder is comprised of two types: a first door holder that engages with the first door fixture and a second door holder that engages with the second door fixture,
The side plate has a rectangular shape in plan view, and consists of an upper door and a lower door, each of which has the first door fixture and the second door fixture on both sides of the upper end in the lateral direction,
The first door holder and the second door holder are installed on the support,
The lower end of the upper door and the upper end of the lower door are swingably connected via a connector,
The upper door and the lower door are each detachably connected at both ends to the two pillars via the first door holder and the second door holder. The transport container according to any one of claims 1 to 6 .

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