Vacuum absorption bottle

Abstract

To prevent a panel face part from being plastically deformed due to breakage of a ridge line part during decompression inside a bottle, even if reducing a weight thereof.SOLUTION: A cylindrical mouth part 11, a shoulder part 12 and a trunk part 13, and a bottomed cylinder-shaped bottom part 14 are provided in a row downward from above in this order. A plurality of panel face parts 16, 17 are provided at the shoulder part via a ridge line part 19 in a circumferential direction in a row. A reinforced rib 21 extending along the ridge line part is formed at the ridge line part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a vacuum absorption bottle. [Background technology]

[0002] Conventionally, a vacuum absorption bottle has been known in which a cylindrical mouth portion, a shoulder portion, a body portion, and a cylindrical bottom portion with a bottom are arranged in this order from top to bottom, and a plurality of panel surface portions are arranged on the shoulder portion in a circumferential direction via ridge portions. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4675013 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in synthetic resin bottles that have been made lighter (thinner) to reduce environmental impact, the ridges tend to break and the panel surfaces are prone to plastic deformation when the pressure inside the bottle is reduced. Bottles that are deformed in this way have a poor appearance and do not exhibit the desired vacuum absorption performance.

[0005] An object of the present invention is to provide a vacuum absorption bottle that can suppress the ridge portion from breaking and the panel surface from being plastically deformed when the pressure inside the bottle is reduced, even when the bottle is made lighter. [Means for solving the problem]

[0006] A vacuum absorption bottle according to one aspect of the present invention comprises a cylindrical mouth, a shoulder, a body, and a bottomed cylindrical bottom, which are arranged in this order from top to bottom, and a plurality of panel surfaces are arranged on the shoulder in a circumferential direction via ridges, and a reinforcing rib is formed on the ridges, extending along the ridges. The plurality of panel surface portions include a first panel surface portion having a triangular shape when viewed from the outside in the radial direction, and a second panel surface portion having an inverted triangular shape when viewed from the outside in the radial direction, the first panel surface portion and the second panel surface portion being alternately arranged in a circumferential direction so as to have a common side, the reinforcing rib being provided on the common side, a circumferential groove extending continuously over the entire length in the circumferential direction being formed at the upper end of the body portion, the bottom side of the first panel surface portion being provided at the lower end of the shoulder portion, and the reinforcing rib being provided on all sides defining the plurality of panel surface portions except for the bottom side of the first panel surface portion. are.

[0007] Since a reinforcing rib extending along the ridge line is formed on the ridge line, it is possible to increase the rigidity of the ridge line, and it is possible to prevent the ridge line from breaking and the panel surface from being plastically deformed when the pressure inside the vacuum absorption bottle is reduced.

[0009] Since the multiple panel surface portions are provided with first panel surface portions and second panel surface portions that are arranged alternately in the circumferential direction so as to have a common side, it is possible to easily provide many panel surface portions on the shoulder portion, thereby reducing restrictions on the number of panel surface portions that can be provided on the shoulder portion.

[0011] Since the reinforcing ribs are provided on all edges defining the multiple panel surface portions except the bottom edge of the first panel surface portion, the rigidity of the outer edge of the second panel surface portion can be increased all around, and since the reinforcing ribs are not provided on the bottom edge of the first panel surface portion, which is adjacent to the circumferential groove of the body portion in the vertical direction, the reinforcing ribs can be prevented from reducing the buckling strength or impairing the design of the connection area between the body portion and the shoulder portion.

[0012] A pair of side regions of the body portion that face each other radially across the central axis of the mouth portion may each have a finger rest recess formed therein, and the back region located between the pair of side regions and the finger rest recess may form a grip portion.

[0013] The vacuum absorption bottle is a so-called pinch-grip bottle-type container in which a finger-rest recess is formed in the body and a grip is provided, making it difficult to secure space for providing a panel surface portion in the body. However, since a plurality of panel surface portions are provided in the shoulder portion, when the pressure inside the vacuum absorption bottle is reduced, the ridge portion can be prevented from bending and the panel surface portions can be prevented from plastically deforming, and the above-mentioned effect is significantly achieved. [Effects of the Invention]

[0014] According to this invention, even when weight is reduced, it is possible to prevent the ridge portion from breaking and the panel surface from being plastically deformed when the pressure inside the bottle is reduced. [Brief explanation of the drawings]

[0015] [Figure 1] FIG. 1 is a side view of a vacuum absorption bottle according to an embodiment. [Figure 2] FIG. 2 is a top view of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, a vacuum absorption bottle according to one embodiment will be described with reference to the drawings. As shown in FIG. 1, the vacuum absorption bottle 1 according to this embodiment has a cylindrical mouth part 11, a shoulder part 12, a body part 13, and a cylindrical bottom part 14 with a bottom, and these parts 11 to 14 are generally arranged in this order with their central axes aligned on a common axis.

[0017] The weight of the vacuum absorption bottle 1 is 0.025 g or less per 1 ml of the internal volume of the vacuum absorption bottle 1. The internal volume of the vacuum absorption bottle 1 is sized to hold, for example, 200 ml to 4000 ml of contents. In the illustrated example, the vacuum absorption bottle 1 is sized to hold approximately 2700 ml of contents.

[0018] Hereinafter, the common axis will be referred to as the central axis O, the mouth 11 side along the central axis O will be referred to as the upper side, and the bottom 14 side along the central axis O will be referred to as the lower side, the direction along the central axis O will be referred to as the up-down direction, the direction that intersects the central axis O when viewed from the up-down direction will be referred to as the radial direction, and the direction that circles around the central axis O will be referred to as the circumferential direction. The vacuum absorption bottle 1 is integrally formed from a synthetic resin material by blow molding a preform formed into a cylindrical shape with a bottom by injection molding. A cap (not shown) is attached to the mouth 11. The mouth 11, shoulder 12, and bottom 14 each have a circular cross-sectional shape perpendicular to the central axis O.

[0019] A pair of side regions 13a of the body 13 facing each other across the central axis O in the radial direction are each formed with a finger rest recess 15. A back region 13b of the body 13 located between the pair of side regions 13a and the finger rest recess 15 form a grip G that a user holds when lifting the vacuum absorption bottle 1. That is, the reduced pressure absorption bottle 1 of this embodiment is a so-called pinch-grip bottle-type container in which a finger-receiving recess 15 is formed in the body part 13 and a grip part G is provided. Note that the reduced pressure absorption bottle may have a configuration other than the pinch-grip bottle-type container in which the finger-receiving recess 15 is not formed in the body part 13.

[0020] The back region 13b has a shorter circumferential length than the pair of regions located between the pair of side regions 13a in the body 13. A body panel surface portion 13c is formed in the back region 13b to prevent the vacuum absorption bottle 1 from being deformed to a degree that is difficult to restore its original shape when the vacuum absorption bottle 1 is decompressed.

[0021] Hereinafter, the side on which the back region 13b is located with respect to the central axis O will be referred to as the rear side, and the side opposite the back region 13b with respect to the central axis O will be referred to as the front side. In the body 13, the part located opposite the back region 13b across the central axis O in the radial direction will be referred to as the front region 13d. In the radial direction, the direction in which the back region 13b and the front region 13d face each other will be referred to as the front-rear direction.

[0022] The finger rest recess 15 has a rectangular shape that is long in the vertical direction when viewed from the radially outer side in a front view. A plurality of protruding ribs 18 are provided at intervals in the vertical direction on a bottom surface 15a that faces the radially outer side of the inner surface of the finger rest recess 15. The protruding ribs 18 are formed in the shape of a rectangular parallelepiped that is long in the front-rear direction. In the side surface region 13a, a plurality of recesses 13f are formed at intervals in the vertical direction in a portion located rearward of the finger rest recess 15. The recesses 13f are provided so as to be offset in position from the protruding rib 18 in the vertical direction.

[0023] A circumferential groove 13e extending continuously over the entire circumferential length is formed at the upper end of the body portion 13. A plurality of circumferential grooves 13e are also formed at the lower end of the body portion 13 at intervals in the up-down direction. In this embodiment, the number of circumferential grooves 13e provided at the upper end of the body portion 13 is one, and the number of circumferential grooves 13e provided at the lower end of the body portion 13 is two. Note that the body portion 13 does not necessarily need to be provided with a circumferential groove 13e.

[0024] A plurality of panel surfaces 16, 17 are provided on the shoulder portion 12, connected in the circumferential direction via ridge portions 19. The panel surfaces 16, 17 prevent the vacuum absorption bottle 1 from being deformed to a degree that is difficult to restore due to the pressure reduction inside the vacuum absorption bottle 1. Reinforcing ribs 21 are formed on the ridge line portions 19 and extend along the ridge line portions 19. The ridge line portions 19 and the reinforcing ribs 21 extend in the vertical direction. The reinforcing ribs 21 are grooves recessed radially inward. The reinforcing rib 21 may be formed as a protrusion that protrudes radially outward.

[0025] The plurality of panel surfaces 16, 17 include first panel surfaces 16 that are triangular when viewed from the outside in the radial direction, and second panel surfaces 17 that are inverted triangular when viewed from the outside in the radial direction. Six first panel surfaces 16 and six second panel surfaces 17 are provided.

[0026] The first panel surface portion 16 and the second panel surface portion 17 are alternately arranged in the circumferential direction to have a common side 22. A reinforcing rib 21 is provided on the common side 22. The reinforcing rib 21 is provided continuously over the entire length of the common side 22. The upper and lower ends of the reinforcing rib 21 provided on the common side 22 are respectively close to the upper and lower ends of other reinforcing ribs 21 adjacent to them in the circumferential direction. The upper and lower ends of the reinforcing rib 21 provided on the common side 22 may be spaced apart from the upper and lower ends of other reinforcing ribs 21 adjacent to them in the circumferential direction.

[0027] In this embodiment, the first panel surface portion 16 has an isosceles triangular shape when viewed from the outside in the radial direction, and the second panel surface portion 17 has an inverted isosceles triangular shape when viewed from the outside in the radial direction. The first panel surface portion 16 and the second panel surface portion 17 may have, for example, an equilateral triangular shape or a rectangular shape when viewed from the outside in the radial direction.

[0028] Two of the three equal sides that define the isosceles triangle shape are the common side 22. When viewed from the outside in the radial direction, the apex angle of the first panel surface portion 16 is larger than the apex angle of the second panel surface portion 17. The length of the base side 16a of the first panel surface portion 16 is longer than the length of the base side 17a of the second panel surface portion 17. When viewed from the outside in the radial direction, the base side 16a of the first panel surface portion 16 is curved downward and protrudes upward, while the base side 17a of the second panel surface portion 17 is curved upward and protrudes upward. The amount by which the base side 17a of the second panel surface portion 17 protrudes upward from the vertex 16b of the first panel surface portion 16 is equal to the amount by which the base side 16a of the first panel surface portion 16 protrudes downward from the vertex 17b of the second panel surface portion 17. When viewed from the outside in the radial direction, the radius of curvature of the base 16a of the first panel surface portion 16 is larger than the radius of curvature of the base 17a of the second panel surface portion 17.

[0029] The apex angle of the first panel surface portion 16 may be set to be equal to or smaller than the apex angle of the second panel surface portion 17 when viewed from the outside in the radial direction. The length of the bottom side 16a of the first panel surface portion 16 may be set to be equal to or shorter than the length of the bottom side 17a of the second panel surface portion 17. The amount by which the bottom edge 17a of the second panel surface portion 17 protrudes upward from the vertex 16b of the first panel surface portion 16 may be different from the amount by which the bottom edge 16a of the first panel surface portion 16 protrudes downward from the vertex 17b of the second panel surface portion 17. The bases 16a, 17a of the first panel surface portion 16 and the second panel surface portion 17 may extend straight in the circumferential direction. The radius of curvature of the base 16a of the first panel surface portion 16 may be set to be equal to or smaller than the radius of curvature of the base 17a of the second panel surface portion 17 when viewed from the outside in the radial direction.

[0030] The base 16a of the first panel surface portion 16 is provided at the lower end of the shoulder portion 12. The base 17a of the second panel surface portion 17 is provided at the upper end of the shoulder portion 12. The reinforcing ribs 21 are provided on all of the sides 16a, 17a, 22 that define the multiple panel surface portions 16, 17, except for the bottom side 16a of the first panel surface portion 16. In other words, the reinforcing ribs 21 are provided not only on the common side 22 but also on the bottom side 17a of the second panel surface portion 17. It is not necessary to provide the reinforcing rib 21 on the bottom side 17a of the second panel surface portion 17.

[0031] The reinforcing rib 21 is provided continuously over the entire circumferential length excluding both circumferential ends of the bottom side 17a of the second panel surface portion 17. Both circumferential ends of the reinforcing rib 21 provided on the bottom side 17a of the second panel surface portion 17 are spaced apart in the circumferential direction from the circumferential ends of the reinforcing rib 21 provided on the bottom side 17a of another circumferentially adjacent second panel surface portion 17, and are spaced upward from the upper ends of the reinforcing ribs 21 provided on the common side 22.

[0032] The reinforcing rib 21 may be provided continuously over the entire circumferential length of the bottom side 17a of the second panel surface portion 17. Both circumferential ends of the reinforcing rib 21 provided on the bottom side 17a of the second panel surface portion 17 may be close to at least one of the circumferential ends of the reinforcing rib 21 provided on the bottom side 17a of another circumferentially adjacent second panel surface portion 17 and the upper end of the reinforcing rib 21 provided on the common side 22.

[0033] The upper and lower ends of the reinforcing rib 21 provided on the common side 22, as well as both circumferential ends of the reinforcing rib 21 provided on the bottom side 17a of the second panel surface portion 17, are each formed so that their width narrows and their depth becomes shallower toward the tip. In addition, the width of each of the reinforcing ribs 21 provided on the common edge 22 and the bottom edge 17a of the second panel surface portion 17 may be the same throughout the entire length of the reinforcing rib 21, and the depth of each of these reinforcing ribs 21 may be the same throughout the entire length of the reinforcing rib 21.

[0034] The width and depth of the portion of the reinforcing rib 21 provided on the common side 22 located between the upper and lower ends are greater than the width and depth of the portion of the reinforcing rib 21 provided on the bottom side 17a of the second panel surface portion 17 located between both circumferential ends. In addition, the width and depth of the portion of the reinforcing rib 21 provided on the common edge 22 located between the upper and lower ends may be less than the width and depth of the portion of the reinforcing rib 21 provided on the bottom edge 17a of the second panel surface portion 17 located between both circumferential ends.

[0035] 2, the circumferential centers of one of the multiple first panel surface portions 16 and the front region 13d of the body portion 13 coincide with each other. The circumferential centers of one of the multiple first panel surface portions 16 and the back region 13b of the body portion 13 coincide with each other. The circumferential centers of two of the multiple second panel surface portions 17 that face each other in the radial direction and the pair of side regions 13a of the body portion 13 coincide with each other.

[0036] Note that the circumferential centers of one of the multiple first panel surface portions 16 and the front region 13d of the body portion 13 may be spaced apart from each other in the circumferential direction. The circumferential centers of one of the multiple first panel surface portions 16 and the back region 13b of the body portion 13 may be spaced apart from each other in the circumferential direction. Two of the multiple second panel surface portions 17 that face each other in the radial direction and the circumferential centers of the pair of side region 13a of the body portion 13 may be spaced apart from each other in the circumferential direction.

[0037] As described above, in the vacuum absorption bottle 1 of this embodiment, the reinforcing ribs 21 extending along the ridge line 19 are formed on the ridge line 19, which makes it possible to increase the rigidity of the ridge line 19 and to prevent the ridge line 19 from breaking and the panel surface portions 16, 17 from being plastically deformed when the pressure inside the vacuum absorption bottle 1 is reduced.

[0038] Since the first panel surface portion 16 and the second panel surface portion 17 are arranged alternately in the circumferential direction so that the multiple panel surface portions 16, 17 have a common edge 22, it is possible to easily provide many panel surface portions 16, 17 on the shoulder portion 12, and it is possible to prevent restrictions on the number of panel surface portions 16, 17 provided on the shoulder portion 12.

[0039] Since the reinforcing ribs 21 are provided on all edges 16a, 17a, 22 that define the multiple panel surface portions 16, 17, except for the bottom edge 16a of the first panel surface portion 16, the rigidity of the outer peripheral edge of the second panel surface portion 17 can be increased all around, and since the reinforcing ribs 21 are not provided on the bottom edge 16a of the first panel surface portion 16, which is adjacent to the circumferential groove 13e of the body portion 13 in the vertical direction, the reinforcing ribs 21 can prevent the buckling strength from being reduced or the design of the connection area between the body portion 13 and the shoulder portion 12 from being impaired.

[0040] The vacuum absorption bottle 1 is a so-called pinch-grip bottle-type container in which the finger-receiving recesses 15 are formed in the body 13 and the grip portion G is provided, so that it is difficult to secure space for providing the panel surface portions 16, 17 in the body 13. However, since the plurality of panel surface portions 16, 17 are provided in the shoulder portion 12, when the inside of the vacuum absorption bottle 1 is decompressed, the bending of the ridge portion 19 and the plastic deformation of the panel surface portions 16, 17 can be suppressed, and the above-mentioned operational effect is remarkably achieved.

[0041] The technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention.

[0042] For example, the synthetic resin material forming the vacuum absorption bottle 1 may be changed as appropriate to, for example, polyethylene terephthalate, polyethylene naphthalate, amorphous polyester, or a blend of these materials. The vacuum absorption bottle 1 is not limited to a single-layer structure, but may be a laminated structure having an intermediate layer, such as a layer made of a resin material with gas barrier properties, a layer made of recycled material, or a layer made of a resin material with oxygen absorbing properties. In the above embodiment, the shoulder portion 12 and the bottom portion 14 have a circular cross-sectional shape perpendicular to the central axis O, but the shape is not limited to this and may be changed as appropriate, for example, to a square shape.

[0043] In addition, within the scope of the spirit of the present invention, it is possible to replace the components in the above-described embodiments with well-known components as appropriate, and the above-described embodiments and the above-described variations may be combined as appropriate. [Explanation of symbols]

[0044] 1 vacuum absorption bottle 11 Mouth 12 Shoulder 13 Torso 13a Side area 13b Back area 13e Circumferential groove 14 Bottom 15 Finger rest recess 16 First panel surface (panel surface) 16a Bottom 17 Second panel surface (panel surface) 19 Ridgeline 21 Reinforcing rib 22 Common Edge G Grip section O center axis

Claims

1. a cylindrical mouth portion, a shoulder portion, a body portion, and a cylindrical bottom portion with a bottom, which are connected in this order from top to bottom; a plurality of panel surface portions are provided on the shoulder portion and connected in a circumferential direction via ridge portions; A reinforcing rib is formed on the ridge line portion and extends along the ridge line portion, The plurality of panel surface portions include: a first panel surface portion having a triangular shape when viewed from the outside in the radial direction; a second panel surface portion having an inverted triangular shape when viewed from the outside in the radial direction, the first panel surface portion and the second panel surface portion are alternately arranged in a circumferential direction so as to have a common side, The reinforcing rib is provided on the common side, a circumferential groove is formed at an upper end of the body portion, the circumferential groove extending continuously over the entire length; a bottom edge of the first panel surface portion is provided at a lower end of the shoulder portion, The vacuum absorption bottle, wherein the reinforcing ribs are provided on all sides defining the plurality of panel surface portions except for a bottom side of the first panel surface portion.

2. 2. The vacuum absorption bottle according to claim 1, wherein finger rest recesses are formed in a pair of side regions of the body portion that face each other across a central axis of the mouth portion in a radial direction, and a back region located between the pair of side regions and the finger rest recesses form a grip portion.

Images