JPH0510221U - Synthetic resin container - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a synthetic resin container that not only improves the yield of products but also improves the use performance. [Structure] A flange 11 is integrally formed on the upper ends of the left and right side walls 4, 5 and the front and rear walls 6, 7 over the entire periphery of the opening 2. The flange 11 has a closed cross-sectional shape having a hollow portion 15 having a rectangular cross-section, and each of the walls 4, 5,
Upper horizontal part 12 extending horizontally from the upper ends of 6, 7
A vertical portion 13 extending downward from the tip of the upper horizontal portion 12 and a lower horizontal portion 14 extending to the lower end of the vertical portion 13 and extending substantially parallel to the upper horizontal portion 12. The end of the horizontal portion 14 is integrally connected to the left and right side walls 4, 5 and the front and rear side walls 6, 7. The hollow portion 15 is formed by injecting a gas into a molten resin.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

  The present invention relates to improvement of a synthetic resin container.

[0002]

[Prior art]

  As a conventional synthetic resin container, the one shown in FIGS. There is. That is, the synthetic resin container 1 is a box body having a rectangular opening 2 on the upper surface. And is injection-molded with a synthetic resin such as PP to form the bottom wall 3 and the peripheral wall. The left and right side walls 4, 5 and the front and rear walls 6, 7 are integrally formed. The left and right At the upper ends of the side walls 4 and 5 and the front and rear walls 6 and 7, there is a flag over the entire periphery of the opening 2. It is molded integrally. The flange 8 is, as shown in FIG. A horizontal part 9 extending horizontally from the upper ends of the walls 4, 5, 6, 7 and a tip of the horizontal part 9. It is formed in a substantially L-shaped cross section including a vertical portion 10 that is vertically installed. Also, the above A plurality of ribs 25 are formed between the vertical portion 10 and the walls 4, 5, 6, 7 and Each rib 25 is also integrally connected to the lower surface of the horizontal portion 9.

[0003]   Such a synthetic resin container 1 accommodates a desired article therein, and transports the article. It is used for various purposes such as storage, and when carrying the contained articles together with the synthetic resin container 1. In this case, the flange 8 is gripped, lifted and transferred.

[0004]

[Problems to be solved by the device]

  In such a conventional synthetic resin container 1, the flange 8 surrounds the opening 2. When the force F is applied in the opening direction of the opening 2, the force F is To prevent the left and right side walls 4, 5 and the front and rear walls 6, 7 from cracking. Acts like. Therefore, the flange 8 is formed into a substantially L-shaped cross section as described above. And the horizontal portion 9 is also integrated between the vertical portion 10 and the walls 4, 5, 6, 7. By forming a plurality of ribs 25 that are mechanically coupled to each other, a certain degree of strength is secured. However, the strength required to prevent the cracks and cracks is still obtained. The reality is that there is none. Specifically, when shipping this synthetic resin container 1, A number of synthetic resin containers 1 are fitted inside one after another and stacked and packed. Further, the force F in the opening direction acts on each synthetic resin container 1. At this time, winter At temperatures such as 5 ° C or lower, the elasticity of the resin decreases and elongation and impact When the degree is low, the stress due to the force F is the outermost circumference of the flange 8. Concentration on the vertical portion 10 causes cracks or cracks in the vertical portion 10. And the hula When the ridge 8 is cracked or cracked, the stress concentrates on the relevant portion and the walls 4, 5 The actual situation is that cracks and cracks occur up to 6 and 7, and the product yield decreases. It was

[0005]   In particular, in order to make the items contained inside visible from the outside today, It is often used to mold the synthetic resin container 1 with a light resin. And this transparent When light resin is used, the above-mentioned cracks and cracks occur frequently and the product yield decreases significantly. Resulting in.

[0006]   Further, when in use, the flange 8 is gripped as described above to make a synthetic resin container. 1, the articles contained therein are conveyed, but the flange 8 has a cross section. Since it is substantially L-shaped, when a high-weight article is housed and conveyed, the vertical portion 10 The lower edge may bite into your hand, making it difficult to convey, or the flange 8 Inconveniences such as being deformed or damaged, making it impossible to carry the paper have occurred.

[0007]   The present invention has been made in view of the above conventional problems, and the product yield To provide a container made of synthetic resin that not only improves the use performance but also improves the use performance. It is intended for and.

[0008]

[Means for Solving the Problems]

  In order to solve the above problems, the present invention has a bottom wall and a peripheral wall, and The upper surface has an opening, and the upper end of the peripheral wall extends over the entire periphery of the opening. In a synthetic resin container in which the flange is integrally molded, extend the flange It is formed in a closed cross-sectional shape having a hollow portion along the existing direction. In addition, the bottom wall and the peripheral wall And has an opening on the upper surface, and the entire peripheral edge of the opening at the upper end of the peripheral wall. A lid that integrally forms a flange that extends over the opening, while closing the opening. In a container made of synthetic resin in which a hook portion that engages with the flange is provided on the body, The flange is formed into a closed cross-sectional shape having a hollow portion along the extending direction thereof. In addition, it is preferable that a leg portion extending along the peripheral wall is integrally formed on the lower surface of the bottom wall. In the formed synthetic resin container, the leg portion has a hollow portion extending in the extending direction. It has a closed cross section.

[0009]

[Action]

  In the above structure, the flange is formed with a hollow portion along the extending direction thereof. As a result, the flange is formed into a closed cross-sectional shape. Because of this, the opening When a force in the opening direction is applied to the peripheral wall with respect to Force concentration can be suppressed, and the phenomenon of cracks and fractures on the flange is effectively prevented. Be stopped. Therefore, when shipping this synthetic resin container, Even if the containers are sequentially fitted inside and stacked and packed, The inconvenience of cracks and cracks on the surface is reliably prevented. Also, when using When gripping the lunge, the flange has a closed cross-sectional shape, so It does not bite into your hand, and due to its closed cross section, Since sufficient rigidity is secured, it is possible to store high-weight articles stored inside it. Even if the sheet is conveyed by being transported, the damage to the flange is suppressed. Moreover, the flange has a hollow Since it has a closed cross-sectional shape, it has the above-mentioned cracks and cracks while suppressing the amount of resin used. Can be prevented and the rigidity can be secured.

[0010]   Also, a synthetic resin container provided with a lid having a hook portion that engages with the flange In this case, as a result of the flange having sufficient rigidity, the engagement strength of the hook part is also improved. Go up. In addition, the legs provided on the bottom surface have a closed cross-sectional shape having the hollow portion. By being shaped, the strength of the leg itself and the surface rigidity of the bottom surface are improved.

[0011]

【Example】

  An embodiment of the present invention will be described below with reference to the drawings. That is, as shown in FIG. As described above, the synthetic resin container 1 is a box body having a rectangular opening 2 on the upper surface. The bottom wall 3 and the peripheral wall are injection molded from a synthetic resin such as PP. The left and right side walls 4, 5 and the front and rear walls 6, 7 are integrally formed. The left At the upper ends of the right side walls 4 and 5 and the front and rear walls 6 and 7, the entire periphery of the opening 2 is illustrated. The flange 11 shown in FIG. 1 is integrally formed. The flange 11 has a rectangular cross section. A closed cross-sectional shape having a hollow portion 15 in the shape of the upper end of each of the walls 4, 5, 6, 7 And an upper horizontal part 12 extending horizontally from the lower part, and downward from the tip of the upper horizontal part 12. The vertical part 13 extending in the direction, and the upper horizontal part 12 connecting to the lower end of the vertical part 13. And a lower horizontal portion 14 extending substantially parallel to each other. The left and right side walls 4, 5 and the front and rear side walls 6, 7 are integrally connected. This flange 1 1 is to inject a gas into a resin in a molten state in the injection molding The hollow portion 15 is formed by molding the hollow portion 15 by It is formed over the entire length of the lunge 11.

[0012]   On the other hand, the bottom surface of the bottom wall 3 extends along the left and right side walls 4, 5 and the front and rear walls 6, 7. However, the leg portion 16 having an enclosure shape is integrally formed. The leg 16 also has a rectangular cross section It has a closed cross-sectional shape having an empty portion 17, and is suspended from the lower end portions of the walls 4, 5, 6, 7. The outer vertical portion 18 extending in the straight direction and the lower end of the outer vertical portion 18 are connected in the horizontal direction. The lower horizontal part 19 and the outer vertical part 18 connected to the tip of the lower horizontal part 19. And an upper end portion of the inner vertical portion 20. Is integrally connected to the lower surface of the bottom wall 3. This leg 16 is also the same as the above-mentioned injector. Injecting gas into the molten resin in The hollow part 17 is formed over the entire length of the leg part 16. Is made.

[0013]   In the present embodiment having the above-described configuration, the flange 11 is provided with the extending direction thereof. The hollow portion 15 is formed along with which the flange 11 has a closed cross-sectional shape. Is molded into. For this reason, as shown in FIG. When the force F is applied to the left and right side walls 4, 5 and the front and rear walls 6, 7, the characteristic of the flange is It is possible to suppress the stress concentration on a fixed part, and the flange 11 is not cracked or broken. This phenomenon is effectively prevented. Also, the flange 11 should have a closed cross-sectional shape. As a result, high rigidity is ensured, so that each wall 4, against the force F, Effectively prevent deformation, cracks, and cracks in 5, 6, and 7. For this reason, When shipping the synthetic resin container 1 according to the embodiment, a plurality of synthetic resin containers 1 are sequentially They are fitted inside and stacked and packed, which allows each synthetic resin container 1 to be placed in front. Even if the force F in the opening direction is applied, the flange 11 and the walls 4, 5, 6, 7 are cracked. The inconvenience of cracks and cracks can be suppressed.

[0014]   Also, when the temperature drops below 5 ° C in winter and the elasticity of the resin decreases, Even if there is, it is possible to secure the rigidity against the force F in the flange 11, and The inconvenience of cracks and cracks in the lunge 11 and the walls 4, 5, 6, 7 is suppressed, As a result, the product yield can be improved. In addition, items contained inside When the synthetic resin container 1 is molded with transparent resin so that the product can be seen from the outside As described above, even when the molding is performed without mixing the cross-linking material, the cracks and It is possible to suppress the occurrence of cracks, which makes it possible to The yield can be remarkably improved.

[0015]   In addition, in the present embodiment, the leg portion 16 provided on the bottom wall 3 also includes the hollow portion 15. Since it is molded into a closed cross-section having, the strength of the leg portion 16 itself is improved, Even if a high-weight article is stored, the leg portion 16 is not crushed. Not only can this be prevented, but the surface rigidity of the bottom wall 3 can be improved to accommodate high-weight articles. In this case, the bottom wall 3 can be prevented from being deformed. In addition, the closed cross-sectional shape and Enclosed flanges 11 and legs 16 are provided on the top and bottom of the synthetic resin container 1, respectively. By being present, the rigidity of the entire container 1 can be dramatically improved. Moreover, both the flange 11 and the leg portion 16 have a closed cross-sectional shape having a hollow portion. Therefore, while suppressing the amount of resin used, the cracks and cracks can be prevented and It is possible to secure the rigidity and improve the overall rigidity.

[0016]   Also, when the flange 11 is gripped during use, the flange 11 is closed. Since it is a surface shape, a specific part does not bite into your hand, Even when articles are stored, they can be easily transported. Furthermore, closed cross section This ensures that the flange 11 itself has sufficient rigidity. The flange 11 is damaged even if the high-weight articles stored inside are transported. There is no such thing, and reliable transport is possible.

[0017]   FIG. 2 shows a second embodiment of the present invention, which opens and closes the opening 2. A buckle (both not shown) is attached to the end of the free lid, and the buckle is attached. A hook portion 22 is rotatably supported on the wheel via a hinge portion 21. The lower end of 22 engages with the lower surface of the lower horizontal portion 14 provided on the flange 11. The claw 23 is extended. In the second embodiment, as described above, the flange As a result of 11 having sufficient rigidity, the engagement strength when the hook portion 22 is engaged is also improved. By doing so, it becomes possible to securely lock the lid body.

[0018]   FIG. 3 shows a third embodiment of the present invention, in which the lower water The flat portion 14 is formed in an oblique shape, and the lower horizontal portion 14 and the vertical portion 1 are formed. An acute-angled locking portion 24 is formed at the joint portion of 3. Also, the hook portion 2 2, the claw 23 is formed in an acute angle. In this third embodiment, Since the locking portion 24 and the claw 23 are both acute-angled, the locking strength of the hook portion 22 is increased. As described above, the flange that is the locked member of the hook portion 22 can be further increased. Combined with the fact that the sufficient rigidity is ensured for the dice 11, the locking strength of the lid is further increased. It is possible to raise it.

[0019]

[Effect of device]

  As described above, the present invention is provided on the entire periphery of the opening formed in the synthetic resin container. A flange extending over a closed cross-sectional shape having a hollow portion along its extending direction. It was made to be molded. Therefore, when shipping this synthetic resin container, If they are stacked and packed together, input in the opening direction of the opening. The force exerted on the flange and surrounding walls will prevent cracks and breaks from occurring more reliably. It is possible to stop. In addition, the temperature decreases in winter and the elasticity of the resin is low. Even when dropped, it is possible to suppress cracks and fractures against the force, which As a result, the product yield can be improved. In addition, the items contained inside When a synthetic resin container is molded with transparent resin so that the As described above, even if molding is performed without mixing a cross-linking material, The yield of transparent synthetic resin containers can be suppressed. Can be significantly improved.

[0020]   When gripping the flange during use, the flange has a closed cross-sectional shape. Therefore, a specific part does not get into your hand, and you can store high-weight items. Even if it is stored, it can be easily transported. Furthermore, it must have a closed cross section. Since the flange secures sufficient rigidity to the flange itself, it is housed inside it. Even if a large and heavy article is stored and transported, the flange is not damaged. Without, reliable transport is possible.

[0021]   In addition, a flange for engaging the hook portion provided on the lid body is similarly extended. Since it was molded into a closed cross-sectional shape having a hollow portion along the existing direction, the flange As a result of having sufficient rigidity, the engagement strength when the hook part is engaged is also improved. As a result, it is possible to securely lock the lid.

[0022]   Further, the leg portion provided on the lower surface of the bottom wall also has a hollow portion along the extending direction thereof. Since it is molded into a closed cross section, not only can the strength of the legs themselves be improved, but the bottom The surface rigidity of the wall and the rigidity of the entire container can be dramatically improved. Only However, since both the flange and the leg have a hollow structure, the use of resin While controlling the dose, at a low cost, prevent the cracks and cracks, secure rigidity, and overall It is possible to improve the mechanical rigidity.

[Brief description of drawings]

FIG. 1 is a sectional view corresponding to line AA of FIG. 4 showing a first embodiment of the present invention.

FIG. 2 is a sectional view corresponding to line AA of FIG. 4 showing a second embodiment of the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 4 showing a third embodiment of the present invention.

FIG. 4 is a perspective view of a synthetic resin container.

FIG. 5 is a cross-sectional view showing a conventional synthetic resin container corresponding to line AA in FIG. 4.

[Explanation of symbols]

1 Synthetic resin container 2 openings 3 bottom wall 4 Left side wall (peripheral wall) 5 Right side wall (peripheral wall) 6 Front wall (peripheral wall) 7 Rear wall (peripheral wall) 11 flange 15 Hollow part 16 legs 22 Hook part

Claims (3)

[Scope of utility model registration request] 1. A synthetic resin having a bottom wall and a peripheral wall, an opening on the upper surface, and a flange integrally formed at the upper end of the peripheral wall, the flange extending over the entire periphery of the opening. A synthetic resin container, characterized in that the flange is molded into a closed cross-sectional shape having a hollow portion along the extending direction thereof. 2. A flange having a bottom wall and a peripheral wall, having an opening in the upper surface, and integrally formed with a flange extending over the entire peripheral edge of the opening at the upper end of the peripheral wall, In a synthetic resin container in which a lid portion that closes the opening portion is provided with a hook portion that engages with the flange, the flange is formed into a closed cross-sectional shape having a hollow portion along the extending direction thereof. And a synthetic resin container. 3. A synthetic resin container in which a leg portion extending along the peripheral wall is integrally formed on a lower surface of the bottom wall, and the leg portion has a hollow portion along the extending direction. The synthetic resin container according to claim 1 or 2, which is molded into a closed cross-sectional shape.