JP2012153377A - Packaging tray, and packaging body using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging tray capable of preventing the jump-out of a packaged article during transportation.SOLUTION: The packaging tray 10 includes a housing recess 11 for housing a packaged article P. On the sidewall 12 of the housing recess 11, a projected part 15 is formed to project along the depth direction d of the housing recess 11. The projected part 15 forms a slope 15d where the end 15a of the opening 11b side of the housing recess 11 is inclined. When the packaged article P is housed in the housing recess 11, the projected part 15 is deformed so as to be crushed by the side face of the packaged article P, and a restoration force F is generated so as to withstand the deformation.

Description

  The present invention relates to a packing tray for storing an object to be packed such as a machine part, and more particularly to a packing tray suitable for holding and transporting an object to be packed.

  Conventionally, among articles to be packed such as machine parts constituting an industrial machine or a vehicle, a light and small packaged article is packed by a vacuum-formed packing tray. The packing tray is formed with a storage recess for storing the packaged object according to the shape of the packaged object. Such an article to be packed is transported as a packing body in a state of being stored in the storage recess of the packing tray.

  However, an object to be packed packed in the packing tray may jump out of the storage recess due to vibration during transportation. In view of such points, as shown in FIG. 7, a protruding portion 76 that protrudes inward to be engaged with the article to be packed P <b> 1 is formed on the side wall portion 75 a of the storage recess 75 of the packing tray 70. (For example, refer to Patent Document 1 or Patent Document 2). By this protrusion 76, the protrusion 76 is locked to the article P1 to be packed in the storage recess 75 at the time of conveyance, so that the object P can be prevented from popping out of the storage recess 75.

JP 2000-118560 A JP 2002-302114 A

  However, in order to form such a protrusion 76, the end 76 a on the bottom 75 c side of the storage recess 75 of the protrusion 76 is formed so as to spread from the opening 75 b of the storage recess 75 toward the bottom 75 c. Therefore, an undercut must be provided in the mold. And when releasing a shaping | molding die, what is called a shaping | molding die is forcibly removed and the packaging tray 70 in which the projection part 76 was formed is shape | molded. In this case, the shape of the protrusion 76 is easily deformed by the undercut of the mold. For this reason, there are many cases where the locking function does not work depending on the shape of the protrusion 76 due to this deformation.

  Furthermore, even if the projection 76 can be formed in a desired shape, the packaged article P1 is taken out when the packaged article P1 is stored in the storage recess 75 of the packaging tray or from the storage recess 75. In this case, the article to be packed P1 has to get over these protrusions 76. However, when the height of the protrusions 76 is high or the number of the protrusions 76 is large, the article to be packed P1 may not be easily put in and out of the storage recess 75.

  The present invention has been made to solve the above-described problems, and the object of the present invention is to prevent an object to be packed from popping out of a storage recess during transportation and the like, and to facilitate molding. An object of the present invention is to provide a packaging tray in which a packaged article can be easily taken in and out of a storage recess.

  In order to solve the above-mentioned problems, the inventors have made extensive studies, and as a result, the conventional packaging tray has a structure that holds the package to be popped out in the upper part of the storage recess for storing the package. As a result, the above-mentioned problems have occurred, but when storing, by pressing the side surface of the object to be packed with the side wall portion of the storing recess, the structure for holding the object to be packed is improved. Furthermore, a new finding has been obtained that it is also possible to easily take in and out the article to be packed from the storage recess.

  The present invention is based on this new knowledge, and the packing tray according to the present invention is a packing tray in which a storage recess for storing an object to be packed is formed, and the side wall of the storage recess Is formed with a protruding portion that protrudes along the depth direction of the storage recess and has an inclined end on the opening side of the storage recess, the protrusion being configured to store the packaged object. When housed in the recess, it is deformed so as to be crushed by the side surface of the article to be packed, and a restoring force is generated against the deformation.

  According to the present invention, when the object to be packed is stored in the storage recess, the end of the protruding portion on the opening side of the storage recess is inclined, so that the inclined portion places the object to be packed in the storage recess. Acts as a slope to introduce into. Thereafter, by further moving the object to be packed toward the bottom of the storage recess, the object to be packed can be stored while the protruding portion is deformed so as to be crushed by the side surface of the object to be packed. At this time, due to the restoring force that the deformed protruding portion tries to return to the original shape, the packed object stored by the protruding portion is pressed on the side surface of the packed object.

  As a result, when transporting the tray (packaging body) containing the objects to be packed, the objects to be packed are held in the storage recesses in the storage recesses due to the restoring force. Things can be prevented from jumping out.

  Moreover, since the edge part of the opening part side of a protrusion part inclines, a to-be-packaged object can be easily accommodated in an accommodation recessed part. On the other hand, since the stored article to be packed is held in the storage recess only by the restoring force acting on the side surface of the package, the article to be packed can be easily taken out from the storage recess.

  Further, such a protruding portion can be formed by a forming die without being forced to form an undercut. Thereby, the protrusion part of the stable shape can be easily manufactured in the side wall part of an accommodation recessed part.

  Here, in the present invention, “when the object to be packed is stored in the storage recess, the projecting portion is deformed so as to be crushed by the side surface of the object to be packed, and a restoring force is generated against the deformation. “The protrusion” is a thickness, material (for example, hardness), size, and shape that can be deformed so as to be crushed by the side surface of the packed object in a state in which the packed object is stored. And when it is deformed so as to be crushed in this way, a restoring force (repulsive force against deformation) that the deformed protruding portion tries to return to the original shape is applied to the side surface of the packaged item. Having a thickness, material (for example, hardness), size, shape, etc. that can act.

  Here, the thickness of the protrusion of the storage recess of the packaging tray is not particularly limited as long as the restoring force can be generated by the above-described deformation. However, as a more preferable aspect, the thickness of the protruding portion is thinner than the thickness of the side wall portion of the storage recess other than the protruding portion.

  According to such an aspect, by making the wall thickness of the side wall portion thinner in the housing recesses other than the projecting portions, the projecting portions are easily deformed by the side surface of the object to be packed, and It is possible to easily take in and out the package. In addition, since the thickness of the side wall portion of the storage recess other than the protrusion is made thicker than the thickness of the protrusion, the article to be packed stored in the storage recess can be suitably protected.

  Here, when the packaging tray is manufactured by molding using a molding die by, for example, vacuum molding, press molding, or the like, considering the mold release property (moldability of the packaging tray) after molding, In general, the wall surface of the housing recess and the wall surface of the projecting portion constituting a part thereof are also inclined so as to spread from the bottom of the housing recess toward the opening.

  However, as a more preferable aspect, the packaging tray is formed using a molding die, and the wall surface of the protruding portion has a surface parallel to the depth direction of the storage recess. ing.

  According to the present invention, the wall surface of the projecting portion is formed into a surface parallel to the depth direction of the housing recess (a surface parallel to the drawing direction of the mold), thereby forming the wall of the projecting portion during molding. The thickness of the portion can be made thinner than the thickness of the other inclined side wall portions. Thereby, a protrusion part becomes easy to deform | transform easily with a to-be-packaged object, and it can further facilitate taking in / out of the to-be-packaged object in a storage recessed part.

  In addition, the shape of the protruding portion can include, for example, a shape that protrudes in a triangular shape, a polygonal shape, or a curved shape along the width direction. There is no particular limitation as long as the protruding portion is deformed by the side surface and a restoring force is generated by the deformation.

  However, as a more preferable aspect, it is more preferable that the protrusion is curved along the width direction of the storage recess. According to this aspect, the protruding portion that is curved along the width direction of the storage recess is easily deformed when storing the packaged object, and can be easily restored to the original shape. Can act.

  As a more preferred embodiment, the thickness of the protruding portion is 0.3 to 2 mm, and the height of the protruding portion is more preferably 1 to 2 mm. According to the present invention, when the article to be packed is stored in the storage recess, the protruding part is deformed by making the protruding part thick and high in such a range, and the object to be packed is restored by its restoring force. Can be held in the storage recess.

  That is, when the thickness of the protruding portion is less than 0.3 mm, or the height of the protruding portion is less than 1 mm, even if the protruding portion is deformed due to the contact with the object to be packed, In some cases, it is not possible to obtain sufficient restoring force to hold an object. On the other hand, when the thickness of the protrusion exceeds 2 mm or the height of the protrusion exceeds 2 mm, it is difficult to deform the protrusion by the packaged object, and the packaged object can be easily removed from the storage recess. It may not be easy to put in and out.

  Furthermore, if the protruding portion is deformed, a restoring force is generated against the deformation, and the object to be packed can be stably held in the storing recess, the protrusion formed in one storing recess. The number of parts is not particularly limited.

  However, more preferably, at least two protrusions are formed on the side wall of the storage recess. In this way, by forming at least two protrusions, the object to be packed can be held at two points in the storage recess.

  In addition, the length of the projecting portion along the depth direction of the storage recess is particularly limited as long as a restoring force that can prevent popping out during transportation or the like can be applied to the packaged item. is not. However, as a more preferable aspect, the length of the protruding portion along the depth direction is longer than the thickness of the packaged object on the side surface of the packaged object. According to this aspect, by making the length of the protruding portion larger (longer) than the thickness of the packaged item, the side surface of the packaged item can be reliably pressed by the restoring force, and the deformation of the protruding portion is further performed. The upper part which is not made can be made to act as a convex part which latches to a to-be-packaged object.

  In this way, by packing the packing object by storing the packing object in the storing recess of the packing tray described above, the packing object is conveyed without jumping out of the storing recess of the tray. be able to.

  According to this invention, while preventing the to-be-packaged item from popping out at the time of conveyance, it is easy to mold and to put the to-be-packaged item in and out of the storage recess.

The typical perspective view for demonstrating the tray for packing which concerns on a 1st form. It is a top view of the storage recessed part of the tray for packing shown in FIG. 1, (a) is a top view before storing the article to be packed in the storage recess, and (b) is the article to be packed in the storage recess. The top view after storing. It is a typical expansion perspective view of the protrusion part vicinity formed in the side wall part shown in FIG. 1, (a) is a perspective view before accommodating a to-be-packaged object, (b) is a to-be-packaged object. The perspective view of the state accommodated. It is typical sectional drawing for demonstrating the method of accommodating a to-be-packaged object in the storage recessed part of the tray for packing shown in FIG. 1, (a) is sectional drawing which shows the state before accommodating a to-be-packaged object. (B) is sectional drawing which shows the state in the middle of accommodating the to-be-packaged object of (a), (c) is sectional drawing which shows the state after accommodating the to-be-packaged object. It is a typical expansion perspective view which shows the modification of the protrusion part shown in FIG. 2, (a) is a perspective view which shows a 1st modification, (b) is a perspective view which shows a 2nd modification. It is a figure and (c) is a perspective view which shows the 3rd modification. It is typical sectional drawing which shows the modification of the protrusion part shown in FIG. 1, (a) is sectional drawing which shows a 1st modification, (b) is a figure which shows a 2nd modification. The typical sectional view of the accommodation crevice for explaining the conventional tray for packing.

  Below, based on drawing, embodiment of the tray for packing which concerns on this invention is described. FIG. 1 is a schematic perspective view for explaining a packaging tray according to a first embodiment. 2 is a top view of the storage recess of the packing tray shown in FIG. 1, (a) is a top view of the storage recess before storing the object to be packed, and (b) is the storage recess. It is a top view after accommodating the to-be-packaged object.

  FIG. 3 is a schematic enlarged perspective view of the vicinity of the protruding portion formed on the side wall portion shown in FIG. 1, (a) is a perspective view before storing an object to be packed, and (b) It is a perspective view of the state which accommodated the to-be-packaged object.

  FIG. 4 is a schematic cross-sectional view for explaining a method of storing an object to be packed in the storage recess of the packing tray shown in FIG. 1, and (a) shows a state before the object to be packed is stored. It is sectional drawing, (b) is sectional drawing which shows the state in the middle of accommodating the to-be-packaged object of (a), (c) is sectional drawing which shows the state after accommodating to-be-packaged object. .

  A packing tray 10 (hereinafter, referred to as a tray 10) shown in FIG. 1 is a tray for packing an article P to be packed. The tray 10 is formed by integrally molding a sheet-like thermoplastic resin, for example, by thermoforming means such as vacuum forming.

  Examples of the material include polyolefin resins such as polypropylene (PP) and polyethylene (PE), polystyrene (PS) resins such as impact-resistant polystyrene (HiPS), or polyester resins such as polyethylene terephthalate (PET). The material is not particularly limited as long as it is a resin that can be thermoformed.

  As shown in FIGS. 1 to 3, a plurality of (four in the figure, 2 × 4) items to be packaged P are accommodated in the molded packaging tray 10 in accordance with the shape of the lower portion Pa of the item P to be packaged. Two storage recesses 11 are formed, and the depth of the storage recess 11 is deeper than the height of the article to be packed P.

  Each storage recess 11 is provided with a recess protruding from the side wall 11 a of the storage recess 11. The concave portion includes a concave portion 12 b that protrudes so as to connect adjacent storage concave portions 11, and a concave portion 12 a that protrudes toward the outer peripheral edge 17. With the recesses 12 a and 12 b, the operator can easily take out the package P from the packing tray 10 by locking the side surface of the package P stored in the storage recess 11 with a fingertip or hand.

  Moreover, as shown in FIG.1 and FIG.2 (a), four pairs of protrusion parts 15 and 15 are formed in the side wall part 11a of each storage recessed part 11 of the tray 10 for packing in the position which opposes. More specifically, as shown in FIG. 3A, the protruding portion 15 protrudes along the depth direction d to the bottom portion 11 c in the side wall portion 11 a of the storage recess 11.

  Furthermore, the end 15a of the protrusion 15 on the opening 11b side of the storage recess 11 is inclined. That is, an inclined surface 15 d is formed at the end 15 a of the protruding portion 15. The length L of the trunk portion 15c of the protrusion 15 along the depth direction d of the storage recess 11 is the thickness t of the package P on the side surface Pb of the package P that contacts the protrusion 15 when stored. Longer than.

  Here, this length L is the length of the protruding portion 15 from the lower end portion 15f of the inclined surface 15d to the end portion 15b on the bottom 11c side of the storage recess 11, and the article P is moved to the storage recess 11. This corresponds to the contact length (excluding the inclined surface 15d) of the projecting portion 15 that is in contact with each other.

  When the article P is stored in the storage recess 11 from above the storage recess 11 so that the state shown in FIGS. While deforming so as to be crushed by the side surface Pb, a restoring force F corresponding to elastic deformation is generated with respect to the deformation.

  Specifically, in the case of the present embodiment, the packing tray 10 is a molded body vacuum-formed with polypropylene resin or polyethylene terephthalate resin as a more preferable resin among the above-described resins, and the meat of the protrusion 15 The thickness is thinner than the thickness of the side wall 11 a of the storage recess 11 other than the protrusion 15.

  Specifically, the wall thickness of the protrusion is preferably in the range of 0.3 to 2 mm, and the wall thickness of the side wall 11a of the storage recess 11 other than the protrusion 15 is preferably in the range of 0.5 to 3 mm. . Moreover, it is preferable that the height H of the protrusion part from the surface of the side wall part 11a of the storage recessed part 11 to the top part of the protrusion part 15 is 1-2 mm.

  In order to satisfy such a relationship, when the packaging tray 10 is manufactured by molding using a molding die as described above, the wall surface of the trunk portion 15 c of the protruding portion 15 is formed in the depth direction of the storage recess 11. It is preferable that the surface be parallel to d (the direction along the opening 11b from the bottom 11c).

  That is, since the depth direction d coincides with the drawing direction of the mold of the tray 10, the thickness of the protruding portion 15 is set to be larger than the thickness of the side wall portion 11 a of the storage recess 11 other than the protruding portion 15 at the time of molding. Can also be thinned.

  By setting the protrusion 15 to a thickness and height in such a range, when the article to be packed P is stored in the storage recess 11, the protrusion 15 can be easily deformed and the restoring force F can be used for packing. The object P can be held in the storage recess 11.

  Further, the boundary portion 15e between the inclined surface 15d of the end portion 15a of the protruding portion 15 and the wall surface of the trunk portion 15c of the protruding portion 15 is structurally stronger in the height direction of the protruding portion than other portions. Become. As a result, since the shape of the protruding portion 15 is maintained not only at the time of molding but also at the time of storing the article to be packed P, the restoring force F described above can be stably secured.

  Here, when the thickness of the projecting portion 15 is less than 0.3 mm, or when the height H of the projecting portion is less than 1 mm, even if the projecting portion 15 is deformed by the contact with the article to be packed P, the housing recess 11 In some cases, the restoring force F sufficient to hold the article to be packed P may not be obtained.

  On the other hand, when the thickness of the protruding portion 15 exceeds 2 mm, or when the height H of the protruding portion exceeds 2 mm, the protruding portion 15 is not easily deformed by the packed object P, and the packed object can be easily obtained. It becomes difficult to put the article to be packed P in and out of the storage recess 11.

  Moreover, the protrusion part 15 is curving along the width direction w of the accommodation recessed part 11, and is curving in circular arc shape in the width direction in this embodiment. The width f of the storage recess 11 is not particularly limited as long as the restoring force F described above can be generated, but is preferably in the range of 5 to 30 mm.

  The operation of the thus configured tray 10 will be described below. First, the article to be packed P is stored in the storage recess 11 from the state shown in FIG. At this time, the article to be packed P can be guided into the storage recess 11 along the inclined surface 15d.

  Next, from the state shown in FIG. 4B to the state shown in FIG. 4C, the projecting portion 15 is deformed so that the projecting portion 15 of the storage recessed portion 11 is crushed to the side surface Pb of the article to be packed P. The package P is stored. At this time, due to the elastic deformation of a part of the projecting portion, the projecting portion 15 is unpackaged on the side surface of the packaged object P by a restoring force (repulsive force) F that causes the deformed projecting portion 15 to return to the original shape. The object P is pressed.

  In addition, the thickness, material (for example, hardness), size, shape, and the like of the protrusion 15 described above are deformed so as to be crushed by the side surface Pb of the object to be packed P in the state where the object to be packed P is stored. It is set so that the deformed protrusion can apply a restoring force (repulsive force) to return to the original shape to the side surface of the packaged object. If this is changed, other items may be changed according to the change.

  As a result, even if the tray (packing body) 10 in which the objects to be packed are stored is transported, or even when the tray 10 is inverted, the restoring force F causes the storage recess 11 to Since the object to be packed P is sandwiched in step, it is possible to prevent the object to be packed from jumping out of the tray 10.

  Further, since the length L of the protruding portion 15 along the depth direction d of the storage recess 11 is longer than the thickness t of the packaged object P on the side surface Pb of the packaged object P, the length L of the projecting part 15 extends in the depth direction d. The side surface Pb of the package P can be pressed by the restoring force F of the projecting portion 15, and the upper portion of the projecting portion 15 that is not deformed during storage acts as a convex portion 15 g that is locked to the packaged item. (See FIG. 4C).

  Further, since the end portion 15a on the opening portion 11b side of the projecting portion 15 is inclined, the article to be packed P can be easily stored in the storage recess 11. On the other hand, since the stored article P is held in the storage recess 11 only by the restoring force F acting on the side surface Pb of the package P, the article P can be easily taken out from the storage recess 11. Can do.

  Further, the protruding portion 15 can be formed by a forming die without being forced to form an undercut. Thereby, in the side wall part 11a of the accommodation recessed part 11, the protrusion part 15 of the stable shape can be manufactured easily.

  As described above, the protruding portion 15 curved along the width direction w of the storage recess 11 is easily deformed when storing the article to be packed P, and moreover is easily restored to the original shape against this deformation. A restoring force can be easily applied to the package P.

  However, in addition to such a protrusion 15, a protrusion as shown in FIG. FIG. 5 is a schematic perspective view showing a modification of the protrusion shown in FIG. 2, (a) is a diagram showing a first modification, and (b) is a second modification. It is a figure and (c) is a figure which shows the 3rd modification.

  For example, the protruding portion 15 described above has a cross section that has an arc shape, but as illustrated in FIG. 5A, the cross-sectional shape of the protruding portion 15A along the width direction w may be triangular. . By setting it as such a shape, a restoring force can act locally according to a to-be-packaged object.

  Further, as shown in FIG. 5 (b), the cross-sectional shape along the width direction w of the protrusion 15B may be rectangular, and as shown in FIG. 5 (c), in the width direction w of the protrusion 15C. You may make trapezoidal cross-sectional shape along. By setting it as such protrusion part 15B and 15C, the contact area with a to-be-packaged object can be increased, and the restoring force of more uniform distribution can be made to act on the to-be-packaged object P. FIG.

  Further, as shown in FIG. 5C, by forming the corner 15h of the protrusion 15C along the depth direction d into a round shape, the protrusion 15C deformed after being stored can be easily returned to the original shape. it can.

  6 is a schematic cross-sectional view showing a modification of the protruding portion shown in FIG. 1, (a) is a cross-sectional view showing a first modification, and (b) is a second modification. FIG.

  In the embodiment shown in FIG. 1, the length L of the protrusion along the depth direction of the storage recess is longer than the thickness t of the package on the side surface of the package, but in the storage recess 11, If the restoring force F sufficient to hold the packaged item PA can be given, the length L of the protrusion 15D along the depth direction d of the storage recess 11 is as shown in FIG. The thickness of the packaged object P on the side surface Pb of the packaged object PA may be shorter than the thickness t.

  In the embodiment shown in FIG. 1, the wall surface of the body portion of the projecting portion is a surface parallel to the direction along the opening from the bottom of the housing recess, but as shown in FIG. In the modification, the wall surface of the protrusion 15E may be inclined so as to spread from the bottom 11c of the storage recess 11 in the direction along the opening 11b, and may be inclined more gently than the inclined surface 15d of the protrusion 15E.

  According to such a modification, for example, as shown in FIG. 6 (a), even if a sufficiently long protrusion cannot be formed on the side surface Pb of the article PA, the protrusion By increasing the thickness of the portion 15E, the restoring force F can be increased. Thus, if the inclination angle of the wall surface of the trunk portion 15c of the protruding portion 15E is appropriately selected, the restoring force F can be adjusted in accordance with the length of the trunk portion 15c of the protruding portion 15E.

  Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various designs can be made without departing from the spirit of the present invention described in the claims. It can be changed.

  For example, in the present embodiment, at least eight of the protrusions are formed on the side wall of the storage recess, but by deforming the protrusions, a restoring force is generated against the deformation, The number of the protrusions is not particularly limited as long as it can be stably held in the storage recess, but at least two protrusions may be formed for one storage recess. preferable.

  10: tray (tray), 11: storage recess, 11a: side wall, 11b: opening, 11c: bottom, 12a, 12b: recess, 15, 15A-15E: protrusion, 15a, 15b: end, 15c: Body part, 15d: inclined surface, 15e: boundary part, 15f: lower tip part, 15g: convex part, 15h: 17: outer peripheral edge, d: depth direction, F: restoring force, P, PA: packaged object, Pb: Side surface of packaged object, w: Width direction

Claims (8)

A packaging tray in which a storage recess for storing an object to be packed is formed,
The side wall portion of the storage recess is formed with a protrusion that protrudes along the depth direction of the storage recess and the end of the storage recess on the opening side is inclined,
The protruding portion is configured to be deformed so as to be crushed by a side surface of the packed object when the packed object is stored in the storage recess, and a restoring force is generated with respect to the deformation. A packaging tray characterized by that.   The packaging tray according to claim 1, wherein a thickness of the protruding portion is thinner than a thickness of a side wall portion of the storage recess other than the protruding portion.   The packing tray is formed using a molding die, and the wall surface of the protruding portion has a surface parallel to the depth direction of the storage recess. 2. The packaging tray according to 2.   The packing tray according to claim 1, wherein the protruding portion is curved along the width direction of the storage recess.   The packaging tray according to any one of claims 1 to 4, wherein a thickness of the protruding portion is 0.3 to 2 mm, and a height of the protruding portion is 1 to 2 mm.   The packaging tray according to any one of claims 1 to 5, wherein at least two protrusions are formed on a side wall of the storage recess.   The length of the said protrusion part along the said depth direction is longer than the thickness of the said to-be-packaged object in the said side surface of the said to-be-packaged object, For the packing in any one of Claims 1-6 characterized by the above-mentioned. tray.   The package body, wherein the packing object is stored in the storage recess of the packing tray according to claim 1.

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