JP7164878B2 - transport container - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport container for packing large members such as automobile parts.

When transporting a large-sized member, pillow materials are placed on a cart or box pallet to prevent the member from being damaged or deformed, and the member is mounted thereon. For example, Patent Literature 1 shows an example of arranging pillow materials on the girders of a box pallet. Further, Patent Document 2 discloses an example in which receiving pillows provided with recesses for fitting parts are stacked in multiple stages. In any of these documents, a pillow material or a receiving pillow is fixed by dropping it into a guide groove provided in a vertical column.

JP-A-52-9244 Japanese Utility Model Laid-Open No. 57-149220

The transport container is custom-made and manufactured by a container manufacturer. In Patent Documents 1 and 2, grooves prepared on the side of the truck or box pallet are used when attaching the receiving material to the truck or box pallet. When using such grooves, the receiving pillow must be inserted from above. Receiving materials and parts, which are objects to be transported, are alternately stacked to form a multi-level stack.

On the other hand, there is also a transport container in which a receiving material is fixed to a square tube attached to a metal frame. For example, the transport container shown in FIGS. 4A and 4B has a metal frame 1 having a plurality of square tubes 2, 2' arranged in parallel at appropriate intervals, and the square tubes 2, 2 ' is configured by fixing the receiving material 3 to '. FIG. 4A is an overall view, and FIG. 4B is an enlarged sectional view. A metal frame 1 shown in FIG. 4A is provided with a plurality of square tubes 2 extending in the horizontal direction in each layer, and has square tubes 2 ′ extending in a direction perpendicular to the square tubes 2 . The square tubes 2, 2' are made of metal square tubes, and rail grooves 4 are formed on one side surface of the square tubes 2, 2' to accommodate the receiving material.

A receiving member 3 is fixed to some or all of the square tubes 2, 2'. The receiving member 3 is a plate-like member made of foamed resin fixed to the rectangular tube 2 in the longitudinal direction thereof. The thickness is thinner than the receiving materials of Patent Documents 1 and 2 shown above. The receiving member 3 is provided with one or a plurality of recesses 32 on the receiving surface 31 . The shape of the concave portion 32 corresponds to the shape of the object to be transported.

In the manufacturing process of the transport container as shown in FIG. Accordingly, a manufacturing procedure is required in which screws 6 are driven through the square tubes 2 and 2' from the side of the L angle member 5 to fix the receiving member 3. Of these, the procedure of welding the L angle members 5, 5' to the square tubes 2, 2' is the most troublesome, and causes an increase in cost and a longer construction period in manufacturing the transport container.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a transport container having a structure capable of reducing the manufacturing process of the transport container and delivering it in a short delivery time.

In order to achieve the above object, the transport container of the present invention comprises a metal frame provided with square tubes at appropriate intervals,
The square tube is fixed to the square tube so that the length direction thereof is aligned with the length direction of the square tube. a plate-shaped foamed resin receiving material having
A U-shaped main body part in which three side surfaces of the square tube are sandwiched between left and right side parts and a bottom part, a connection part extending from one side part of the left and right side parts beyond the bottom part, a support surface portion connected to the connecting portion and extending to the lower side of the other side surface portion in parallel with the back side of the bottom surface portion; a joint in which the receiving material is inserted into a rail groove formed by a support surface portion, a bottom surface portion, and a connection portion, and the projecting portion is inserted into a connecting hole of the inserted receiving material;
characterized by comprising

According to this invention, since the receiving material can be fixed to the square pipe by the joint to manufacture the transport container, the required man-hours can be greatly reduced. Further, since the support surface portion is provided in parallel on the back side of the bottom surface portion, when the left and right side surface portions are pulled together, the gap between the rail grooves can be opened, and the receiving material can be easily inserted. Moreover, since the protrusion is provided from the port surface side, it is possible to prevent the receiving material from falling off from the joint due to the swinging of the receiving material 3 .

FIG. 1A is a diagram showing the main part of the transport container according to this embodiment, and FIGS. 1A to 1E are diagrams showing the manufacturing process of the transport container. 2A and 2C are perspective views of the joint, and FIG. 2B is a side view of the joint. 4A and 4B are diagrams showing the action of the joint and other forms; FIG. It is a figure which shows the conventional conveyance container.

An embodiment of the present invention will be described based on the attached drawings.
In FIG. 1A, the transport container according to this embodiment has a joint 10, a receiving member 3 and a metal frame 1 (only one layer with the square tube 2 is shown). Here, the square tube 2 is the same square tube as that shown in FIG.

The joint 10 will be described with reference to FIG. 2A and 2B are detailed views of the joint 10, wherein FIG. 2A is a left perspective view, FIG. 2C is a right perspective view, and FIG. 2B is a side view. The joint 10 includes a body portion 20 having a U-shaped cross section, which is composed of left and right side portions 11 and 12 and a bottom portion 13 connecting one ends of the left and right side portions 11 and 12 to each other. It is provided with support surfaces 14 provided in parallel, and is an integrated body molded entirely of resin. The side surface portions 11 and 12, the bottom surface portion 13, and the support surface portion 14 are all plate-shaped. The body portion 20 is sized to surround and contact three surfaces of the square tube 2 made of a square tube due to its U-shape. In FIG. 2B, the cross section of the square tube 2 is indicated by a dashed line for reference. One ends 11 a and 12 b of the left and right side portions 11 and 12 extend above the square tube 2 when the body portion 20 surrounds the three sides of the square tube 2 . When the square tube 2 is accommodated in the main body 20, flanges 16 and 17 for preventing the square tube 2 from being detached are provided so that one ends 11a and 12b of the left and right side portions protrude toward the sides facing each other. ing.

The support surface portion 14 is connected to a connecting portion 15 extending from one side of the left and right side portions (the left side portion in the embodiment) beyond the bottom portion 13, and the other side (the right side portion in the embodiment). 11). A plurality of projecting portions 18 protrude from one end of the support surface portion 14 so as to face the bottom surface portion 13 side. In addition, since the connecting portion 15 is a portion to which a force is applied, it is made thicker than other portions. The distance between the support surface portion 14 and the bottom surface portion 13 corresponds to the thickness t of the receiving material 3, and the distance between the tip of the protrusion 18 and the bottom surface portion 13 is zero or smaller than the thickness t of the receiving material 3. It's becoming The support surface portion 14 , the bottom surface portion 13 and the connection portion 15 form a rail groove 21 into which the receiving material 3 is inserted on one side of the left and right side portions 11 and 12 .

Next, returning to FIG. 1A, the receiving material 3 will be described. The receiving member 3 differs from that described in FIG. 4 in that it has a connecting hole 33 into which the protrusion of the joint 10 is inserted. Valonia (trademark registration No. 5478125, Mitsui Chemicals, Inc.), Softlon (trademark registration No. 928395, Sekisui Chemical Co., Ltd.), and the like are suitable materials for the foamed resin used as the receiving material 3, for example. By compressing the plate-like foamed resin and cutting it with a press blade, the shape of the concave portion 32 of the receiving member 3 and the connecting hole 33 are formed. The connecting holes 33 are provided at low positions corresponding to the projections 18 so as to pass through both side surfaces (both sides adjacent to the receiving surface 31) of the plate-like receiving member 3. As shown in FIG.

Next, a procedure for manufacturing the transport container will be described. First, the joint 10 is attached to the receiving member 3 . At this time, if the left and right side portions 11 and 12 are pulled together as shown in FIG. 1C, the space between the bottom portion 13 and the support surface portion 14 is widened. As a result, the distance between the projecting portion 18 and the bottom portion 13 is widened, and the receiving member 3 can be easily inserted between the rail grooves 21 . The projecting portion 18 is inserted into the connecting hole 33 of the receiving member 3 at the position where the receiving member 3 contacts the connection portion 15 (bottom of the rail groove 21). The state at this time is the state of b in FIG. 1B or FIG. 1D.

Since the support surface portion 14 is provided in parallel on the back side of the bottom surface portion 13, when the left and right side surface portions 11 and 12 are pulled together, the space between the rail groove 21 is widened. If it is provided in parallel on the back side of 11 and 12, such action cannot be exhibited.

Then, as shown in FIG. 1D, the square tube 2 is housed in the U-shape of the main body 20 . At this time, since the tips of the flanges 16 and 17 are tapered, the square tube 2 pushes open the left and right side portions 11 and 12 and enters the body portion 20 . When the flanges 16 and 17 are passed, the gap between the left and right side surfaces 11 and 12 narrows due to the restoring force, and the flanges 16 and 17 prevent the square tube 2 from coming off as shown in FIG. 1E. If necessary, the square tube 2 and the joint 10 may be fixed by screwing a screw 7 (preferably a drill screw).

FIG. 3 shows that the support material 3 is suppressed from falling off from the joint 10 against shaking of the support material 3 . That is, even if the receiving member 3 tries to swing forward (to the left in FIG. 3A), the projecting portion 18 does not slip out of the connecting hole 33 of the receiving member 3 because it is blocked by the bottom portion 13 and the square tube 2 . Also, even if the receiving member 3 tries to swing rearward (to the right in FIG. 3B), it swings integrally with the support surface portion 14, so that the projecting portion 18 does not slip out of the connecting hole 33. This is an effect obtained by providing the projecting portion 18 on the support surface portion 14 side instead of the bottom surface portion 13 side.

According to this embodiment, the receiving material 3 and the square tube 2 can be fixed by the joint 10 to manufacture the transport container. , the required man-hours can be greatly reduced. Further, since the support surface part 14 is provided in parallel on the back side of the bottom surface part 13, when the left and right side parts are pulled together, the space between the rail grooves 21 can be opened, and the receiving material 3 can be easily inserted. Moreover, since the protrusion 18 is provided from the support surface portion 14 side, it is possible to prevent the receiving member 3 from falling off from the joint 10 due to the rocking movement of the receiving member 3 . Also, the metal and the resin can be easily separated when discarding the transport container.

In the above embodiment, the bottom portion 13 is continuously bent at right angles to the right side portion 12 and continuously connected to the right side portion 12. However, as shown in FIG. may extend beyond In this case, the support surface portion 14 connected to the connection portion 15 of the left side surface portion 11 may also extend beyond the right side surface portion 12 like the bottom surface portion 13 .

In the above embodiment, the flanges 16 and 17 are used to hold the square tube 2 inside the main body 20, but the flanges 16 and 17 may be removed and only the screws 7 may be used. For example, even if the flanges 16 and 17 fall off, it can still be used. Also, in the embodiment, the protrusion 18 protrudes only from the support surface 14 , but in addition to this, another protrusion may be provided from the bottom surface 13 toward the support surface 14 .

In the above embodiment, the joint 10 and the receiving material 3 are attached to the square tube 2, but the joint 10 and the receiving material 3 may be attached to the square tube 2' shown in FIG. In this case, when the square pipes 2, 2' are square timbers with a square cross section, the joints 10 having the same shape can be used to attach the square pipes 2, 2' from the lateral side or from the top. Moreover, it is also possible to attach the receiving surface 31 of the receiving member 3 to the square tube 2' so as to face in the horizontal direction, thereby constructing the receiving member 3 as shown in FIG.

1 Metal Frame 2, 2' Square Tube 3 Receiving Material 4 Rail Groove 5, 5' L Angle Material 6, 7 Screw 10 Joint 11, 12 Side Part 13 Bottom Part 14 Support Surface Part 15 Connection Part 16, 17 Flange 18 Protruding Part 20 main body 21 rail groove 31 receiving surface 32 recess 33 connecting hole

Claims (2)

A metal frame provided with square tubes at appropriate intervals;
The square tube is fixed to the square tube so that the length direction thereof is aligned with the length direction of the square tube. a plate-shaped foamed resin receiving material having
A U-shaped main body part in which three side surfaces of the square tube are sandwiched between left and right side parts and a bottom part, a connection part extending from one side part of the left and right side parts beyond the bottom part, a support surface portion connected to the connecting portion and extending to the lower side of the other side surface portion in parallel with the back side of the bottom surface portion; a joint in which the receiving material is inserted into a rail groove formed by a support surface portion, a bottom surface portion, and a connection portion, and the projecting portion is inserted into a connecting hole of the inserted receiving material;
A transport container comprising:
2. The joint according to claim 1, wherein flanges are provided at the ends of the left and right side portions so as to prevent the square tube from being separated from the U-shaped main body portion. transport container.

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