JP2008174270A - Returnable box - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide at low cost a returnable box that excels in oil-proofness and impact resistance. <P>SOLUTION: The returnable box comprises: an outer box 1 made of a synthetic resin, which is open at the top and has a bottom plate 2; an inner bottom member P made of a film of nylon resin, which is formed on the bottom of and inside the outer box 1 and has the form of a sheet slightly smaller than the bottom in planar shape; and partitions 7 and 8 dividing space above the inner bottom member P. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a returnable box that stores articles such as parts and products and is repeatedly used for transportation and the like.

Conventionally, this type of returnable box is configured such that, for example, as shown in Patent Document 1, the upper side is open, and the side wall is erected from the periphery of the bottom plate, and the inside is a transported object. A space for storing an article is formed. And the planar shape of the bottom face of the return box is usually formed in a square or a rectangle. Therefore, the outer shape of the entire return box is usually a cube or a rectangular parallelepiped.
In addition, this conventional returnable box is integrally manufactured by injection molding using a synthetic resin that is soft at a relatively low temperature, such as polypropylene, polyethylene, or polyvinyl chloride, and has excellent flowability and excellent moldability. Yes.
JP 2006-117288 A

The conventional returnable box is softened at a relatively low temperature, such as polypropylene and polyethylene, and is formed by injection molding using a synthetic resin with excellent flowability and excellent moldability. However, when storing articles with oil attached in factories, etc., if the bottom of the returnable box is exposed to the oil flowing down from the article for a long period of time, the bottom part will bulge outward. There was a problem of lack of oil resistance. Further, when the stored article is rubbed on the inner surface of the returnable box, wear powder is generated and may adhere to the article.
In order to solve these problems, it is necessary to select expensive raw materials with excellent oil resistance to manufacture returnable boxes, and new problems such as complicated and strict temperature control required for molding Has occurred, and the above-described problem cannot be easily solved.

  Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to provide a returnable box having excellent oil resistance and impact resistance at low cost.

  In order to achieve the above object, the returnable box according to the present invention has an outer box whose upper side is open, and an inner bottom member that is placed on the bottom surface of the outer box and is formed of a nylon resin film. And a partition plate that divides the upper space of the inner bottom member into a plurality of parts.

The return box having the above configuration can store articles in each space partitioned by a partition plate, and has an inner bottom member made of nylon resin excellent in oil resistance and impact resistance on its bottom surface. Therefore, the stored article will be supported by the inner bottom member excellent in oil resistance and wear resistance, and even if oil adheres, it does not deform and is stable for a long time, Even if rubbing occurs, it is possible to suppress adhesion of wear powder and the like.
In this case, the entire return box is not manufactured with expensive nylon resin, but at least the inner bottom member is manufactured with nylon resin, and the outer box is manufactured with inexpensive material to suppress the overall cost increase. In addition, the inner bottom member is formed of a nylon resin film, can be mass-produced, and can be manufactured at low cost.

Further, the return box according to the present invention includes an outer box whose upper side is in an open state, and an inner bottom member that is placed on a bottom surface of the outer box and formed of a nylon resin film, and the inner bottom portion The material has a receiving plate portion disposed on the bottom surface of the outer box, and a wall portion formed along the vertical direction around the receiving plate portion.
Also in the case of this returnable box, the inner bottom part made of nylon resin with excellent oil resistance and impact resistance is provided on the bottom surface, so the inner bottom part with excellent oil resistance and wear resistance can be stored Even if oil adheres, deformation or the like does not occur, and even if rubbing occurs, the adhesion of wear powder or the like can be suppressed. Further, at least the inner bottom member is made of nylon resin, and the outer box can be made of an inexpensive material, so that the whole can be made inexpensive.

  In this return box, the wall portion of the inner bottom member may be configured to rise upward from the receiving plate portion, and even if the side surface of the stored article is in contact with such a configuration, It comes into contact with a nylon resin excellent in oil resistance and wear resistance, and can be stabilized for a long time without causing deformation.

In addition, the inner bottom member having the wall portion may further include a partition plate that divides the upper space into a plurality of parts.
A returnable box having this configuration can store articles in each space partitioned by a partition plate, and even in that case, the bottom of each space is configured by an inner bottom member made of nylon resin, and each stored article Stable performance can be maintained even when oil adheres to the oil.
In this case, the partition plate may be formed of an inexpensive material like the outer box.

Further, in the returnable box according to the present invention, the surface of the inner bottom member has a plurality of protrusions that contact the plurality of outer peripheral edges of the article placed on the inner bottom member to position the article. It is good also as a structure provided. Moreover, it is good also as a structure by which the engaging part which positions this article | item by engaging the unevenness | corrugation of the bottom face of the article | item mounted on the inner bottom member on the surface of an inner bottom member is provided.
In the walk-through box having these configurations, the horizontal movement of the article placed on the inner bottom member is prevented by the protruding portion and the engaging portion of the inner bottom member. Therefore, even if this returnable box is used at a slight tilt or under conditions where vibrations occur, the article will not contact the inner wall of the outer box. It will contact only the inner bottom member that is excellent in wear.
In this case, it is good also as a structure which has the wall part formed along the up-down direction around the said inner bottom member.

The returnable box according to the present invention is provided with an inner bottom member made of nylon resin excellent in oil resistance and impact resistance on the inner bottom surface of the outer box. It is supported by the inner bottom member having excellent wear properties, and even if oil adheres, it is stable for a long time without being deformed, and even if rubbing occurs, it is possible to suppress the adhesion of wear powder.
Moreover, the entire returnable box is not manufactured with expensive nylon resin, but only the inner bottom member is manufactured with nylon resin, and the inner bottom member is formed by vacuum molding of a nylon resin film, Mass production is possible, and returnable boxes can be manufactured at low cost.

The best mode for carrying out the present invention will be described below with reference to the drawings.
1 to 3 show a return box A according to the first embodiment of the present invention. 1 is a plan view of the return box A, and FIG. 2 is a cross-sectional view thereof, which corresponds to a cross-sectional view taken along line XX of FIG.
This return box A has an outer box 1 that opens upward. The outer box 1 has a flat bottom plate 2, and a side wall 3 is integrally erected from the periphery of the bottom plate 2, and the outer box 1 surrounded by the bottom plate 2 and the side wall 3 has an inside. A space for storing the article W1 that is the object to be transported is formed.

The planar shape of the bottom plate 2, that is, the planar shape of the inner bottom surface of the outer box 1 is formed in a rectangular shape. Therefore, the entire outer shape of the returnable box A has a rectangular parallelepiped shape. And this returnable box A is softened at a relatively low temperature, such as polypropylene, polyethylene, or polyvinyl chloride, like a known returnable box, and is made by injection molding using a synthetic resin with excellent flowability as a raw material. It is manufactured integrally.
In addition, although the planar shape of the inner bottom face of the outer box 1 is a rectangle here, other shapes such as a square or a hexagon can also be used, and the shape is the shape of the article W1 that is the object to be transported. It is decided by etc.

  A flange 3a that protrudes horizontally is provided integrally with the side wall 3 on the outer periphery of the upper end of the side wall 3. By using this collar 3a as a handle, it is convenient to carry the return box A. It is devised to become. Further, around the lower surface of the bottom plate 2, a downward guide protrusion 2a having an outer periphery that can be inserted into the opening 3b of the return box A is provided integrally with the bottom plate 2, so that the return boxes A can be stacked conveniently. It has been devised.

  In the figure, P indicates an inner bottom member made of a material excellent in oil resistance and impact resistance. The inner bottom member P has a rectangular shape whose planar shape is slightly smaller than the planar shape of the inner bottom surface of the outer box 1. It is formed in a sheet shape. The inner bottom member P is formed by vacuum molding a nylon resin film of “nylon 6” which is a thermoplastic engineering plastic having an amide group (—CONH—) bond. As the nylon resin film, in addition to the above-mentioned “nylon 6”, other copolymers such as “nylon 66” and “nylon 610” can also be used.

Further, on the surface of the inner bottom member P, a plurality of (two in the illustrated example) strip-like partition plates 7 and 8 that divide the upper space into a plurality are provided.
Among these partition plates 7, 8, one partition plate 7 has a length corresponding to the long side of the inner bottom member P, and the other partition plate 8 has a length corresponding to the short side of the inner bottom member P. Have And as FIG. 3 shows, the notch parts 7a and 8a cut in the center part of these partition plates 7 and 8 to the position of about half the height are each provided. Then, by engaging the notches 7a and 8a of the partition plates 7 and 8 so that the partition plates 7 and 8 are assembled in a cross shape and placed on the surface of the inner bottom member P, the inner bottom portion The upper space of the material P can be divided into a plurality of (four in the illustrated example) storage chambers. The partition plates 7 and 8 are fixed to the inner bottom member P by screws (not shown).

The return box A having the above-described configuration has an inner bottom member P having excellent oil resistance and impact resistance in the outer box 1, and the article W1 stored therein is supported by the inner bottom member P. Therefore, even when oil adheres to the article W1, the inner bottom member P is not deformed by the oil, and the performance can be stably maintained for a long time. Further, even if the article W1 moves and rubs against the inner bottom member P due to vibration during transportation, the inner bottom member P does not generate wear powder and the like, and the article W1 is stained. Can be prevented.
In this case, since the partition plates 7 and 8 are provided, a large number of storage chambers can be formed, and the article W1 having a relatively small shape can be stored in a state in which the horizontal movement is suppressed. Damage to the article W1 can be effectively prevented. In addition, when storing a large-sized article, the partition plates 7 and 8 may be removed and used, and the usability of the returnable box C can be improved.

  The return box A is manufactured entirely of an expensive nylon resin because the outer box 1 is manufactured of an inexpensive general-purpose resin such as polyethylene or polypropylene and only the inner bottom member P is manufactured of a nylon resin. Cost increase can be suppressed compared to such a case. Further, the inner bottom member P can be easily obtained by molding a nylon resin film into a sheet shape, and can be mass-produced. As a result, a returnable box having excellent oil resistance and impact resistance can be obtained at a low cost. Can do.

4 and 5 show a return box B according to the second embodiment of the present invention.
4 is a plan view of the return box B, and FIG. 5 is a cross-sectional view thereof, which corresponds to a cross-sectional view taken along line YY of FIG. In the figure, the same reference numerals are given to the same elements as those in the first embodiment to simplify the description (the same applies to the following embodiments).
In this return box B, the outer box 1 has the same shape as the return box A of the first embodiment. On the other hand, the inner bottom member Q inserted into the outer box 1 is formed by vacuum forming a nylon resin film so that the planar shape is slightly smaller than the planar shape of the bottom surface of the outer box 1. The whole is composed of a wall portion 5 directed upward around the receiving plate portion 4 and is configured in a dish shape. The inner bottom member P can be inserted into the outer box 1 so that the wall portion 5 faces upward and can be used as a return box as it is. In this case, the wall portion 5 is formed vertically because its upper end portion is trimmed, and in the example of this embodiment, the wall portion 5 has a height up to a position slightly raised from the bottom surface of the outer box 1.

  The return box B of this embodiment can also be made a return box with excellent oil resistance and impact resistance by the inner bottom member Q made of nylon resin, and in particular, the upward wall portion 5 is provided on the inner bottom member Q. Since it is formed, even if the article W2 comes into contact with the oil and does not adhere, deformation or the like does not occur, and the wear powder does not adhere to the article W2.

FIG. 6 is a cross-sectional view of the return box C according to the third embodiment of the present invention.
As for this return box C, the outer box 1 is used in the same shape as the return boxes A and B in the first embodiment and the second embodiment, and is inserted into the outer box 1. As in the second embodiment, the inner bottom member Q has a shape in which a wall portion 5 is formed around the receiving plate portion 4 and is formed on the inner bottom member Q. As in the case of the first embodiment, the partition plates 7 and 8 having the shape shown in FIG. 3 are provided. Also in this embodiment, the inner bottom member Q is formed by vacuum forming a nylon resin film.
Therefore, in this return box C, the inner bottom member Q made of nylon resin can be used as a return box having excellent oil resistance and impact resistance, and the partition plates 7 and 8 are provided. A storage chamber can be formed, and an article W1 having a relatively small shape can be stored in a state in which the horizontal movement thereof is suppressed, and damage to the article W1 during transportation can be effectively prevented. Further, since the upward wall portion 5 is formed on the inner bottom member Q, even if the article W1 comes into contact with the wall portion 5 and oil adheres to it, deformation or the like does not occur. There is no possibility that the wear powder adheres to the article W1.

7 and 8 show a return box D according to the fourth embodiment of the present invention.
7 is a plan view of the return box D, and FIG. 8 is a cross-sectional view thereof, which corresponds to a cross-sectional view taken along the line ZZ in FIG.
The return box D has the same shape as the outer case 1 in the case of the return cases A to C in the first to third embodiments, but the inner bottom member R provided in the outer case 1. Includes a receiving plate portion 4 having a planar shape slightly smaller than the planar shape of the bottom surface of the outer box 1 and a downward wall portion 6 provided around the receiving plate portion 4. A plurality of (six in the illustrated example) projecting portions 9, 9... Are integrally provided on the plate portion 4. These protrusions 9, 9... Are provided at positions in contact with a plurality of positions on the outer peripheral edge of the article W2 placed on the receiving plate part 4, and are in a range surrounded by these protrusions 9, 9. The article W3 is placed inside.
The wall 6 is slightly inclined outward, and an outward flange 6a is formed at the lower end of the wall 6 by punching the outer shape during vacuum forming.

  In the case of the illustrated example, two articles W3 can be stored, and four protrusions 9, 9... Are in contact with each other around the article W3. 9, 9 is in contact with both of the two articles W2. Moreover, the upper part of each protrusion part 9,9 ... is made into the taper-shaped taper part 9a, and the insertion from the upper direction of the articles | goods W2 is made easy.

  In this embodiment, the protrusion W2a is integrally formed on the lower surface of the central portion of the article W3. When the article W3 is placed on the receiving plate portion 4 of the inner bottom member R, the article W3 A recess 10 for engaging the protrusion Wa is provided in the receiving plate portion 4. Therefore, the receiving plate portion 4 of the inner bottom member R is formed with a plurality of protruding portions 9, 9... On the upper surface, and the concave portion 10 is formed on the lower surface at a central position surrounded by these protruding portions 9, 9.. Is formed. The recess 10 is formed at substantially the same height (depth) as the wall 6 of the inner bottom member R. These protrusions 9, 9... And the recess 10 are formed simultaneously with the vacuum forming of the inner bottom member R.

  The return box D having the above configuration can be a return box having excellent oil resistance and impact resistance as well as the return boxes A to C of the first to third embodiments, and the inner bottom member R. The wall portion 6 is provided downward and the receiving plate portion 4 is lifted from the bottom plate 2 of the outer box 1, so that it can be bent when a load is applied to the receiving plate portion 4 or the wall portion 6. The inner bottom member R can function as a cushion against vibrations such as when the article W3 is placed on the receiving plate portion 4. And the protrusions 9, 9 ... are provided on the receiving plate part 4, and contact the outer peripheral edge of the article W3 arranged in the space surrounded by these protrusions 9, 9 ..., so that these protrusions 9, 9 can position the article W3, the horizontal movement of the article W3 can be prevented, and damage to the article W3 during transportation can be effectively prevented, and the contact of the article W3 can be prevented by the inner bottom member R. Therefore, the contact with the outer box 1 is prevented, and the influence on the outer box 1 due to oil or the like adhering to the article W3 can be reliably prevented.

  In this embodiment, since the protrusion Wa of the article W3 is engaged with the concave portion 10 of the inner bottom member R, the horizontal movement of the article W3 is restrained by this engagement, so that the protruding portions 9, 9. It is also possible to do. In addition, when a concave portion is formed on the bottom surface of the article instead of the projection Wa, a projection that engages with the concave portion of the article may be formed on the inner bottom member, and the horizontal movement may be restricted by the engagement between the two. Is possible. In the present invention, the protrusion Wa or the recess on the bottom surface of the article is referred to as an unevenness, and the recess 10 or the protrusion that engages with the protrusion Wa or the recess is referred to as an engagement portion.

In addition, this invention is not limited to the above-mentioned embodiment, In the range which does not deviate from the meaning of this invention, it can change. For example, the partition plates 7 and 8 in the return boxes A and C of the first embodiment and the third embodiment may be formed of an inexpensive material such as polyethylene resin and polypropylene resin similar to the outer box 1, Depending on the article to be stored, it may be made of nylon resin like the inner bottom member.
In addition, although the wall portion 5 of the inner bottom member Q in the second embodiment and the third embodiment is set to a height near the bottom portion of the outer box 1, the height may reach the upper end of the outer box 1. Further, the wall portion 5 in the second embodiment and the third embodiment is not necessarily vertical, but includes one that is slightly inclined.

It is a top view of the returnable box which concerns on 1st embodiment of this invention. It is sectional drawing of the return box which concerns on 1st embodiment shown in FIG. 1, and is corresponded in sectional drawing which follows the XX line of FIG. It is a disassembled perspective view of the partition plate used for the returnable box which concerns on 1st embodiment. It is a longitudinal cross-sectional view of the returnable box which concerns on 2nd embodiment of this invention. It is sectional drawing of the return box which concerns on 2nd embodiment shown in FIG. 4, and is equivalent to sectional drawing which follows the YY line of FIG. It is sectional drawing of the returnable box which concerns on 3rd embodiment of this invention. It is a top view of the returnable box which concerns on 4th embodiment of this invention. It is sectional drawing of the return box which concerns on 4th embodiment shown in FIG. 7, and is corresponded in sectional drawing which follows the ZZ line | wire of FIG.

Explanation of symbols

A, B, C, D Passing box 1 Outer box 2 Bottom plate 2a Guide projection 3 Side plate 3a Collar P, Q, R Inner bottom member 4 Receiving plate 5, 6 Wall 7, 7, Partition plate 9 Projection 10 Recess W1, W2, W3 goods

Claims (7)

  An outer box whose upper side is open, an inner bottom member that is placed on the bottom surface of the outer box and formed of a nylon resin film, and a partition plate that divides the upper space of the inner bottom member into a plurality of parts A returnable box. An outer box whose upper side is in an open state, and an inner bottom member that is placed on the bottom surface of the outer box and formed of a nylon resin film;
The inner bottom member includes a receiving plate portion disposed on the bottom surface of the outer box, and a wall box formed around the receiving plate portion along a vertical direction. .   The return box according to claim 2, wherein the wall portion of the inner bottom member is raised upward from the receiving plate portion.   The returnable box according to claim 2 or 3, further comprising a partition plate placed on the inner bottom member and dividing the upper space of the inner bottom member into a plurality of pieces. An outer box whose upper side is in an open state, and an inner bottom member that is placed on the bottom surface of the outer box and formed of a nylon resin film;
The surface of the inner bottom member is provided with a plurality of protrusions for positioning the article in contact with a plurality of locations on the outer peripheral edge of the article placed on the inner bottom member. box. An outer box whose upper side is in an open state, and an inner bottom member that is placed on the bottom surface of the outer box and formed of a nylon resin film;
A return box having an engaging portion for positioning the article by engaging with the irregularities on the bottom surface of the article placed on the inner bottom member on the surface of the inner bottom member. .   The returnable box according to claim 5 or 6, further comprising a wall portion formed along the vertical direction around the inner bottom member.

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