JP2006264717A - Plastic container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plastic container which secures the rigidity of the oblong container whose center is easy to warp, facilitates engagement of a lid member with a container body, and makes disengagement of the lid member difficult after the engagement. <P>SOLUTION: The oblong box-like plastic container includes the container body 10 which has peripheral ribs 11, 12 formed on the periphery of the top opening of the container body 10, and the lid member 20 which has peripheral ribs 21, 22 which match and engage with the peripheral ribs 11, 12 and are formed on the periphery of the lid member 20. Recesses 13 are formed in the approximate center of the long-side peripheral rib 11 of the container body 10, and recesses 23 are formed in the approximate center of the long-side peripheral rib 21 of the lid member 20 in a plan view. This secures the rigidity of the vicinity of the center of the oblong box-like plastic container, which is originally easy to warp, thus allows smooth engagement between the peripheral ribs 11, 12 formed on the container body 10 and the peripheral ribs 21, 22 formed on the lid member 20. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a plastic container comprising a thin plate composed of a rectangular box-shaped container body and a lid member that is closed in alignment with the container body, and is bent along the periphery of the upper opening of the container body. The present invention relates to a plastic container composed of a peripheral rib and a lid member in which a peripheral rib fitted in alignment with the peripheral rib is bent along the peripheral edge.

Usually, small products and the like are stored and transported by storing a large amount of products in a plastic bag or the like. However, it is difficult to stack in multiple stages for plastic bags that are difficult to maintain shape, and in order to secure the required space for storage and transportation by stacking, a box shape that can accommodate these many plastic bags A separate container was required. In order to save such double labor, as a substitute for plastic bags, transparent and visible contents can be stored directly, and a box plastic container that is lightweight but relatively rigid is used. It has become. A typical example of such a plastic container is an egg pack (see, for example, Patent Document 1 below).
JP-A-11-79267 (refer to claim 1).

  The egg pack disclosed in Patent Document 1 will be described with reference to FIG. An egg pack for transportation and sales that has a container shape and can store multiple eggs inside, and is transparent, ultra-thin and flexible resin lid 108, and self-shaped The paper bottom portion 109 having the characteristics and the engaging portions 123 and 124 formed respectively. The engaging portions 123 and 124 include a lid center engaging portion 125, a bottom center engaging portion 127, a lid outer periphery engaging portion 126, a bottom outer periphery engaging portion 128, and the like. A reinforcing rib 134 is formed, and a partition wall 116 between the eggs is erected on the bottom 109.

  By using such a plastic container, it is possible to stack and store and efficiently store and transport a large number of eggs that contain a large number of eggs. In addition, since the lid portion 108 has transparency, the contents can be seen and the exhibition function is exhibited well. However, such a plastic container is generally configured in a rectangular shape in plan view in order to increase the number of accommodations as much as possible. For this reason, the vicinity of the central part of the long side is easily bent, and it is difficult to attach the cover outer peripheral engaging part 126 and the bottom outer peripheral engaging part 128 in the vicinity of the central part, and at the same time, it is easy to disengage after the engaging.

  Therefore, the present invention solves such problems in conventional plastic containers, secures the rigidity of a rectangular container whose center part is easily bent, and allows the lid member to be easily attached to the container body. An object is to provide a plastic container that is difficult to remove.

  Therefore, the present invention is a plastic container comprising a thin plate composed of a rectangular box-shaped container body and a lid member that is closed in alignment with the container body, and is bent along the periphery of the upper opening of the container body In a plastic container comprising a peripheral rib formed and a lid member in which a peripheral rib fitted and fitted to the peripheral rib is bent along the peripheral edge, the long-side peripheral rib of the container body and the lid member A concave portion is formed in a substantial center in a plan view. Further, the present invention is characterized in that a horizontal center rib is formed between the recesses in the lid member. Further, the present invention is characterized in that a horizontal center bottom groove is formed at the bottom of the container body corresponding to the horizontal center rib in the lid member. In the present invention, the flanges are formed by extending the ends of the peripheral ribs in the container main body and the lid member in a substantially horizontal direction, and the notches and the locking claws that are locked to each other are formed in the flange located in the recess. It is characterized by that. Further, the present invention is characterized in that locking ribs that are locked to each other when the lid member is closed are formed on the peripheral ribs of the container main body and the lid member. Means for this.

  According to the present invention, a plastic container comprising a thin plate composed of a rectangular box-shaped container main body and a lid member that is closed in alignment with the container main body, which is bent along the periphery of the upper opening of the container main body In a plastic container comprising a peripheral rib formed and a lid member in which a peripheral rib fitted and fitted to the peripheral rib is bent along the peripheral edge, the long-side peripheral rib of the container body and the lid member By forming a recess in plan view in the approximate center, it is possible to ensure the rigidity in the vicinity of the center of a rectangular box-like container that is inherently flexible, so even if the plastic container is thin and lightweight, the container body and lid The peripheral ribs formed on the member can be smoothly engaged.

  In addition, when the horizontal center rib is formed by extending between the recesses in the lid member, the rigidity in the vicinity of the center part of the long side in the rectangular box-shaped container is further improved, and the side wall is bent almost laterally. Disappears. Furthermore, when a horizontal center bottom groove is formed at the bottom of the container body corresponding to the horizontal center rib in the lid member, when stacking the container body with the lid member engaged, On the other hand, the horizontal center bottom groove at the bottom of the container body can be fitted, and the containers can be stacked in multiple stages while maintaining high rigidity without causing misalignment.

  Furthermore, when a flange is formed by extending the end of the peripheral rib in the container body and the lid member in a substantially horizontal direction, and a notch and a locking claw that are locked to each other are formed in the flange located in the recess In the vicinity of the concave portion where high rigidity is maintained and does not bend, the hooking claw of the flange in the lid member and the notch of the flange in the container body are smoothly locked and once locked There is no losing sensation. Moreover, when the locking ribs that are locked to each other when the lid member is closed are formed on the peripheral ribs of the container body and the lid member, the overall length is high by reducing the bending of the long side portion. In the box-shaped container in which rigidity is ensured, the lid member and the peripheral ribs of the container main body are more securely engaged.

  Hereinafter, embodiments of the plastic container of the present invention will be described with reference to the drawings. 1 to 4 show one embodiment of the plastic container of the present invention. FIG. 1 is an overall perspective view of the plastic container, FIG. 2 is a plan view and a front view of the container body, and FIG. FIG. 4 is a front view and FIG. 4 is a cross-sectional view and a perspective view showing a locking state between the peripheral ribs of the container body and the lid member.

  As shown in FIG. 1, the basic structure of the plastic container of the present invention is a plastic container comprising a thin plate composed of a rectangular box-shaped container body 10 and a lid member 20 that is closed in alignment with the container body 10. The peripheral ribs 21, 22 bent along the periphery of the upper opening of the container body 10, and the peripheral ribs 11, 12 fitted in alignment with the peripheral ribs 21, 22 are bent along the periphery. In the plastic container composed of the formed lid member 20, the concave portions 13 and 23 are formed in a plan view in the approximate center of the long-side peripheral ribs 11 and 21 of the container body 10 and the lid member 20. .

  As shown in FIG. 1, the plastic container of the present invention includes a container body 10 and a lid member 20 formed by integrally forming a transparent (though not necessarily transparent) thin plastic. The container body 10 is formed by bending peripheral ribs 11 and 12 along the periphery of the upper opening of the rectangular box-shaped container body. The short side peripheral rib 12 is formed on the short side, and the long side peripheral rib 11 is formed on the long side. A flange 15 is formed by extending the ends of these peripheral ribs 11 and 12 in a substantially horizontal direction. Appropriate reinforcing ribs are formed on the side walls and bottom of the container body 10.

  On the other hand, peripheral ribs 21 and 22 that fit and engage with peripheral ribs 11 and 12 formed in the upper opening of the container body 10 are bent along the peripheral edge of the lid member 20. The ends of these peripheral ribs 21 and 22 of the lid member 20 are also extended in a substantially horizontal direction to form a flange 30. Horizontal ribs 25 and 26 are provided between the long side peripheral ribs 21 on both sides of the lid member 20. Lower vertical ribs 27 and 28 are formed between the horizontal ribs 25 and 26 and the short-side peripheral rib 22. A cross-shaped low rib 29 having a cross shape is formed at the center of one horizontal rib 26.

  The most characteristic configuration of the present invention is that the recesses 13 and 23 are formed in the center of the long side peripheral ribs 11, 11 and 21, 21 on both sides of the container body 10 and the lid member 20 in plan view. In the container main body 10, a recess is also formed in the side wall portion based on that. As a result, the moment resistance performance around the horizontal plane is improved, and in particular, there is almost no deflection in the vicinity of the central portions of the long side peripheral ribs 11 and 21. A horizontal center rib 24 is formed between the recesses 23 of the lid member 20. By forming the horizontal center rib 24, the rigidity in the vicinity of the recess 23 is further improved.

    A notch 16 is provided in the flange 15 located in the recess 13 in the container body 10, and a locking claw 31 is formed at a position corresponding to the notch 16 in the flange 30 located in the recess 23 in the lid member 20. Is done. Thus, in the vicinity of the recesses 13 and 23 that retain high rigidity and do not bend, the flange locking claws 31 in the lid member 20 and the flange notches 16 in the container body 10 are smoothly locked. Once locked, it won't slip away.

  A horizontal center bottom groove 14 is formed at the bottom of the container body 10 at a position corresponding to the horizontal center rib 24 of the lid member 20. When stacking the container body 10 fitted and engaged with the lid member 20, the horizontal center bottom groove 14 at the bottom of the container body 10 can be fitted to the horizontal center rib 24 in the lid member 20. Further, the container can be stacked in multiple stages while maintaining high rigidity without causing misalignment, and the rigidity of the bottom of the container body 10 itself can be improved.

  FIG. 2 is a plan view and a front view of the container body. As shown in FIG. 2 (A), some of the peripheral ribs 21 and 22 of the lid member 20 are fitted and engaged with each other on the inner peripheral side of the peripheral ribs 11 and 12 of the container body 10. A locking rib 18 is formed. These locking ribs 18 are formed so as to protrude from the inner peripheral side of the peripheral ribs 11 and 12 to the inner side of the peripheral rib. As can be clearly seen in FIG. 4A, which is an AA cross section of FIG. 2A, it is recessed when viewed from the inner peripheral side of the peripheral rib. Two pairs of locking ribs 18 from the center are formed at the end of the recess 13, and the locking ribs 18 near the short side peripheral rib 12 are at the boundary between the long side peripheral rib 11 and the short side peripheral rib 12. It is formed. In addition to the horizontal central bottom groove 14, horizontal bottom grooves 17 and 19 are formed near the short-side peripheral rib 12 at the bottom of the container body 10, and the horizontal ribs 25 and 26 in the lid member 20 are formed. And is used for positioning the stack.

  FIG. 3 is a plan view and a front view of the lid member. As shown in FIG. 3A, on the inner peripheral side of the peripheral ribs 21, 22, which are fitted and engaged with the peripheral ribs 11, 12 in the container body 10, there are several locking ribs 33. Is formed. These locking ribs 33 are formed so as to protrude from the inner peripheral side of the peripheral ribs 21 and 22 toward the inner side of the peripheral rib. As can be clearly seen in FIG. 4A, which is an AA cross section of FIG. 3A, it is recessed when viewed from the inner peripheral side of the peripheral rib. Two pairs of locking ribs 33 from the center are formed at the end of the recess 23, and the locking ribs 33 near the short side peripheral rib 22 are at the boundary between the long side peripheral rib 21 and the short side peripheral rib 22. It is formed.

  FIG. 4 is a cross-sectional view and a perspective view showing a locked state between the peripheral ribs of the container body and the lid member. 4B shows a state before the peripheral rib 11 of the container body 10 and the peripheral rib 21 of the lid member 20 are fitted and engaged, and FIG. 4A shows the peripheral rib 11 and the peripheral rib 21. Shows a state in which the peripheral rib 21 is engaged and engaged. By engaging and engaging the peripheral rib 21 with the peripheral rib 11, the peripheral rib 21 is engaged with the locking rib 18 of the peripheral rib 11. The retaining rib 33 is locked. As a result, in addition to the engagement / engagement of the peripheral rib 21 to the peripheral rib 11, when the lid member 20 is closed by the locking of the locking rib 33 to the locking rib 18, the long side portion In the box-like container in which high rigidity is ensured as a whole by reducing the bending, the lid member and the peripheral ribs of the container main body are more securely engaged.

  The embodiment of the present invention has been described above, but within the scope of the present invention, the shape of the rectangular box-shaped container body (not only square but also oval may be used. The depth relative to the length of the container body. In order to improve the ratio and die-cutting properties, the bottom corners are inclined, the shape and the number of reinforcing ribs are appropriately formed on the side walls and the bottom, etc.), the type and material as plastic, the shape of the lid member, the container The shape of the peripheral ribs in the main body and the lid member (hat-shaped cross-sectional shape, preferably a slightly open shape for fitting / engaging. A plan view shape, preferably a shape with a corner cut off) ), The shape of the recess (preferably formed in a trapezoidal shape, but in an appropriate shape such as an arc or rectangle), the cross-sectional shape of the horizontal central rib or horizontal rib in the lid member, preferably laminated For some reason) Cross-sectional shape of the horizontal center bottom groove and horizontal bottom groove in the main body (preferably slightly open for lamination), flange shape in the container main body and lid member (not necessarily horizontal) Also, the flange of the lid member may be slightly extended to facilitate gripping for removing the lid member), the notch of the flange member in the container body and the lid member, and the shape of the locking claw (the clover Appropriate shapes can be employed in addition to the shape of the leaf), type (notches and locking claws may be formed on either side of the container body and the lid member), peripheral ribs on the container body and the lid member The shape of the locking ribs (if the locking is possible, the uneven direction can be selected as appropriate), the locking mode, etc. can be selected as appropriate.

1 shows one embodiment of a plastic container according to the present invention, and is an overall perspective view of the plastic container. It is the same plane and front view of a container main body. It is the same plane and front view of a cover member. It is the cross section and perspective view which show the latching state of the peripheral rib of a container main body and a cover member equally. It is a whole perspective view of the egg pack as a conventional plastic container.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Container body 11 Long side peripheral rib 12 Short side peripheral rib 13 Recessed part 14 Horizontal center bottom groove 15 Flange 16 Notch 18 Locking rib 20 Lid member 21 Long side peripheral rib 22 Short side peripheral rib 23 Recessed part 24 Horizontal central rib 30 lid flange 31 locking claw 33 locking lid rib

Claims (5)

A plastic container made of a thin plate composed of a rectangular box-shaped container body and a lid member that is closed in alignment with the container body, a peripheral rib formed by bending along the periphery of the upper opening of the container body; In a plastic container composed of a lid member in which a peripheral rib that is aligned and fitted to the peripheral rib is bent along the peripheral edge, in a plan view at the approximate center of the long-side peripheral rib in the container body and the lid member A plastic container characterized in that a recess is formed. The plastic container according to claim 1, wherein a horizontal center rib is formed between the recesses in the lid member. The plastic container according to claim 2, wherein a horizontal bottom groove is formed in a bottom portion of the container main body corresponding to the horizontal center rib in the lid member. The flange body is formed by extending the peripheral rib end of the container body and the lid member in a substantially horizontal direction, and a notch and a locking claw that are locked to each other are formed on the flange located in the recess. The plastic container according to any one of claims 1 to 3. The plastic container according to any one of claims 1 to 4, wherein locking ribs that are locked to each other when the lid member is closed are formed on the peripheral ribs of the container body and the lid member. .

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