Bottle with cap
The bottle design with a central wall, connecting peripheral wall, and cap recess stabilizes stacking by restricting movement, addressing instability from internal pressure in conventional bottles.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- YOSHINO KOGYOSHO CO LTD
- Filing Date
- 2024-12-16
- Publication Date
- 2026-06-26
Smart Images
Figure 2026105179000001_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a bottle with a cap.
Background Art
[0002] Conventionally, as a bottle in which a mouth part, a shoulder part, a body part, and a bottom part are connected in this order from above to below along the bottle axis direction and integrally formed of a synthetic resin material, for example, as shown in Patent Document 1 below, the inclination angle of the shoulder with respect to the bottle axis is increased, the shoulder is formed to be deformable in the vertical direction, and the shoulder is reduced and deformed in the vertical direction, so that the grounding part of the bottom of another bottle can be arranged on the upper surface of the outer peripheral edge part of this shoulder. A bottle configured as such is known.
Prior Art Documents
Patent Documents
[0003]
Patent Document 1
Summary of the Invention
Problems to be Solved by the Invention
[0004] However, in a conventional bottle, the shape of the shoulder is special and a new molding die is required. Moreover, when a carbonated beverage or the like in which the internal pressure of the bottle is higher than the atmospheric pressure is filled, the shoulder bulges and deforms upward, so that it is considered that another bottle arranged on the upper surface of the outer peripheral edge part of the shoulder becomes unstable.
[0005] The present invention provides a bottle with a cap that can be stacked stably in the vertical direction without changing the bottle shape even when a content liquid in which the internal pressure of the bottle is higher than the atmospheric pressure is filled.
Means for Solving the Problems
[0006] A capped bottle according to one aspect of the present invention comprises a bottle integrally formed of a synthetic resin material, in which a mouth portion, shoulder portion, body portion, and bottom portion are arranged in this order from top to bottom along the bottle axis, and a top cylindrical cap detachably attached to the mouth portion, wherein the bottom portion comprises a central wall portion located on the bottle axis and a connecting peripheral wall portion connecting the outer peripheral edge of the central wall portion and the body portion, the connecting peripheral wall portion has three or more vertical grooves formed at intervals in the circumferential direction, each portion of the connecting peripheral wall portion located between adjacent vertical grooves in the circumferential direction has a leg portion that protrudes downward from the central wall portion, the lower end of the leg portion has a ground contact portion that extends in the circumferential direction, and the upper surface of the top wall of the cap has a recess that extends over the entire circumferential area along the bottle axis, and the recess is formed so that the ground contact portion of another capped bottle can be inserted into it.
[0007] According to one aspect of the present invention, a capped bottle has a mounting recess formed on the upper surface of the top wall of the cap, into which the ground portion of another capped bottle can be inserted, extending over the entire circumferential area. As a result, the radial movement of the ground portion of the other capped bottle inserted into the mounting recess is restricted by the inner surface of the mounting recess, which prevents the other capped bottles from wobbling radially when stacked vertically, and allows the capped bottles to be stacked stably vertically. Since the contact points of other capped bottles can be placed on the top surface of the cap's top wall, the stability when other capped bottles are stacked vertically can be improved as described above, regardless of the bottle shape. Therefore, even when filled with a liquid that causes the internal pressure of the bottle to exceed atmospheric pressure, the capped bottles can be stacked stably in the vertical direction without changing the bottle shape.
[0008] The bottle with a cap according to claim 1, wherein the arrangement recesses are provided in multiple locations at intervals in the circumferential direction.
[0009] Since multiple mounting recesses are provided at intervals in the circumferential direction, the circumferential movement of the contact portion inserted into the mounting recess is restricted by the inner surface of the mounting recess, thereby preventing wobbling in the radial and circumferential directions when the bottles with caps are stacked vertically. [Effects of the Invention]
[0010] According to the above embodiment of the present invention, even when the bottles are filled with a liquid that causes the internal pressure to be higher than atmospheric pressure, they can be stacked stably in the vertical direction without changing the shape of the bottles. [Brief explanation of the drawing]
[0011] [Figure 1] This is a partial longitudinal cross-sectional view of a bottle with a cap according to the first embodiment. [Figure 2] Figure 1 is a top view of a bottle with a cap. [Figure 3] This is a top view of a bottle with a cap according to the second embodiment. [Figure 4] This is a partial longitudinal cross-sectional view of a bottle with a cap according to the third embodiment. [Figure 5] Figure 4 is a top view of a bottle with a cap. [Figure 6] This is a top view of a bottle with a cap according to the fourth embodiment. [Modes for carrying out the invention]
[0012] A first embodiment of the present invention will be described below with reference to the drawings. The bottle 1 with a cap in this embodiment, as shown in Figures 1 and 2, comprises a bottomed cylindrical bottle 10 and a topped cylindrical cap 20. The bottle 10 and the cap 20 are arranged coaxially with a common axis. Hereinafter, this common axis will be referred to as the central axis O (bottle axis), the side of the cap 20 that lies along the central axis O will be referred to as the upper side, the side of the bottom 11 of the bottle 10 that lies along the central axis O will be referred to as the lower side, and 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 when viewed from the up-down direction will be referred to as the circumferential direction.
[0013] Bottle 10 is constructed from a synthetic resin material, with the mouth portion 12, shoulder portion 13, body portion 14, and bottom portion 11 arranged in a continuous sequence from top to bottom, coaxially aligned with the central axis O. While the cross-sectional shape of Bottle 10 perpendicular to the central axis O is circular, it may also have an angular shape, such as a rectangle. Bottle 10 is formed, for example, by biaxial stretch blow molding. Bottle 10 is filled with a beverage, such as a carbonated drink (including alcoholic beverages), which increases internal pressure when sealed.
[0014] The upper part 12a of the mouth 12 has a larger inner and outer diameter than the lower part 12b of the mouth 12. In the illustrated example, the inner diameter of the upper part 12a of the mouth 12 is larger than the outer diameter of the lower part 12b of the mouth 12, but the former may be less than or equal to the latter. A female threaded portion is formed on the inner circumferential surface of the lower part 12b of the mouth 12, to which the cap 20 is detachably screwed. A neck ring 12c is formed on the outer circumferential surface of the portion of the lower part 12b of the mouth 12 that extends from below the female threaded portion, extending continuously along the entire length in the circumferential direction. The vertical size of the upper part 12a of the mouth 12 is smaller than the vertical size of the lower part 12b of the mouth 12, but the former may be greater than or equal to the latter. Furthermore, the opening 12 may be configured such that the inner and outer diameters are the same along its entire length in the vertical direction, or it may be configured such that a male threaded portion is formed on the outer surface of the opening 12 to which the cap 20 is detachably screwed. The neck ring 12c is not required to be provided on the opening 12.
[0015] The shoulder portion 13 expands in diameter from top to bottom. The shoulder portion 13呈a protruding curved shape toward the outer side in the radial direction in a longitudinal sectional view along the vertical direction. The lower end portion of the shoulder portion 13 is continuously connected to the upper end portion of the body portion 14 without a step. The body portion 14 extends straight in the vertical direction.
[0016] The bottom portion 11 includes a central wall portion 15 located on the central axis O and a connecting circumferential wall portion 16 connecting the outer peripheral edge of the central wall portion 15 and the lower end portion of the body portion 14. The upper end portion of the connecting circumferential wall portion 16 is smoothly and continuously connected to the lower end portion of the body portion 14 without a step over the entire circumferential length.
[0017] The central wall portion 15 is formed in a disc shape coaxially arranged with the central axis O. The central wall portion 15 is formed flat. Note that the central wall portion 15 may be formed in a protruding curved shape upward or downward. Three or more vertical groove portions 17 are formed in the connecting circumferential wall portion 16 at intervals in the circumferential direction. The vertical groove portions 17 are provided over the entire vertical length of the connecting circumferential wall portion 16. The plurality of vertical groove portions 17 are formed in the same shape and size and are arranged at equal intervals in the circumferential direction. Leg portions 18 protruding downward from the central wall portion 15 are formed in each portion located between the vertically adjacent vertical groove portions 17 in the connecting circumferential wall portion 16. The plurality of leg portions 18 are formed in the same shape and size and are arranged at equal intervals in the circumferential direction.
[0018] A grounding portion 19 extending in the circumferential direction is formed at the lower end portion of the leg portion 18. The grounding portion 19 is intermittently arranged over the entire circumferential length when the bottom portion 11 is viewed from below and extends along the same circle centered on the central axis O. The grounding portion 19 is located below the central wall portion 15. The grounding portion 19 extends straight in the radial direction in a longitudinal sectional view along the vertical and radial directions. Note that as the grounding portion 19, a configuration formed in a linear shape extending in the circumferential direction without a width in the radial direction may be adopted. In the illustrated example, five leg portions 18 and five vertical groove portions 17 are provided respectively, but each number may be appropriately changed, for example, to an even number.
[0019] The cap 20 is detachably attached to the mouth portion 12. The peripheral wall 21 of the cap 20 is detachably externally fitted to the upper portion 12a of the mouth portion 12. The upper portion 12a of the mouth portion 12 is undercut and fitted inside the peripheral wall 21. The lower surface of the outer peripheral edge portion 22a of the top wall 22 of the cap 20 abuts against the upper end opening edge of the mouth portion 12. Of the top wall 22 of the cap 20, the inner portion 22b located radially inside from the outer peripheral edge portion 22a is formed in a bottomed cylindrical shape having an inner peripheral wall 23 and an inner bottom wall 24. Thereby, even when the inner bottom wall 24 bulges upward when the internal pressure in the bottle increases, the vertical size of the bottle 1 with the cap does not change. Note that the inner portion 22b may not have the inner peripheral wall 23 and may be continuously connected to the outer peripheral edge portion 22a without a step in the radial direction.
[0020] The inner peripheral wall 23 is separated radially inward from the inner peripheral surface of the upper portion 12a of the mouth portion 12. The inner peripheral wall 23 is located above the lower portion 12b of the mouth portion 12. The inner bottom wall 24 closes the lower end opening of the inner peripheral wall 23. A screw cylinder 25 extending downward and inserted into the lower portion 12b of the mouth portion 12 is formed on the lower surface of the inner bottom wall 24. A male screw portion that screws into the female screw portion formed on the lower portion | part 12b of the mouth part 12 is formed in the outer peripheral surface of the screw cylinder 25.
[0021] An arrangement recess 26 is formed on the upper surface of the top wall 22 of the cap 20 over the entire circumferential direction. The arrangement recess 26 is formed on the upper surface of the outer peripheral edge portion 22a of the top wall 22. As shown by the two-dot chain line in FIG. 1, the arrangement recess 26 is formed so that the grounding portion 19 of another bottle 1 with a cap can be inserted.
[0022] In the illustrated example, the arrangement recess 26 extends continuously around the entire circumference. The arrangement recess 26 is located radially inward from the outer edge of the top wall 22. The arrangement recess 26 opens toward the inside of the inner portion 22b. The arrangement recess 26 opens at the upper end of the inner surface of the inner circumferential wall 23. The arrangement recess 26 is defined by a bottom surface 26a located at the lower end and facing upward, and an outer circumferential surface 26b located at the radial outer end and facing radially inward.
[0023] The bottom surface 26a of the arrangement recess 26 supports the contact portion 19 of the other capped bottle 1. The bottom surface 26a supports the contact portion 19 of the other capped bottle 1 over its entire surface. The outer circumferential surface of the lower end of the leg portion 18 of the other capped bottle 1 is supported by the outer circumferential surface 26b of the placement recess 26. Here, the outer circumferential surface of the lower end of the leg portion 18 extends radially outward as it moves upward from the radially outer end of the ground contact portion 19. The outer circumferential surface of the lower end of the leg portion 18 and the outer circumferential surface 26b of the placement recess 26 have a curved shape that protrudes radially outward in a longitudinal cross-sectional view along the vertical and radial directions, but they may also have a straight shape. The outer circumferential surface of the lower end of the leg portion 18 and the outer circumferential surface 26b of the placement recess 26 coincide with or are equivalent to each other in a longitudinal cross-sectional view along the vertical and radial directions.
[0024] As described above, in the capped bottle 1 according to this embodiment, a placement recess 26 into which the ground portion 19 of another capped bottle 1 can be inserted is formed over the entire circumferential area on the upper surface of the top wall 22 of the cap 20. As a result, the radial movement of the ground portion 19 of another capped bottle 1 inserted into the placement recess 26 is restricted by the outer circumferential surface 26b of the placement recess 26. This prevents the other capped bottles 1 from wobbling radially when stacked vertically, and allows the capped bottles 1 to be stacked stably vertically. Since it is possible to place the contact portion 19 of other capped bottles 1 on the upper surface of the top wall 22 of the cap 20, the stability when other capped bottles 1 are stacked vertically can be improved as described above, regardless of the bottle shape. Therefore, even when filled with a liquid that causes the internal pressure of the bottle to be higher than atmospheric pressure, the capped bottles 1 can be stacked stably in the vertical direction without changing the bottle shape.
[0025] Next, a bottle 2 with a cap according to the second embodiment of the present invention will be described with reference to Figure 3. In this second embodiment, the same reference numerals are used for parts that are the same as those in the first embodiment, and their descriptions are omitted. Only the differences will be described.
[0026] In the capped bottle 2 of this embodiment, multiple placement recesses 26 are provided at intervals in the circumferential direction. Multiple contact portions 19 from other capped bottles 2 are individually inserted into the multiple placement recesses 26. The number of placement recesses 26 is the same as the number of leg portions 18 and vertical groove portions 17, respectively. The arrangement recess 26 is defined by a bottom surface 26a, an outer peripheral surface 26b, and a pair of side surfaces 26c located at both ends in the circumferential direction and facing each other in the circumferential direction. The entire lower end of the leg portion 18, excluding the inner peripheral surface facing radially inward, is in contact with the bottom surface 26a, the outer peripheral surface 26b, and the pair of side surfaces 26c.
[0027] The side surface 26c of the arrangement recess 26 supports the side surface facing the circumferential direction of the lower end of the leg portion 18 of the other capped bottle 2. Here, both side surfaces of the lower end of the leg portion 18 extend outward in the circumferential direction, moving away from each other in the circumferential direction as they move upward from both ends of the circumferential direction of the ground contact portion 19. The side surface of the lower end of the leg portion 18 and the side surface 26c of the arrangement recess 26 have a curved shape that protrudes outward in the circumferential direction when viewed from the radial direction, but they may also have a straight shape. The side surface of the lower end of the leg portion 18 and the side surface 26c of the arrangement recess 26 coincide with or are equal to each other when viewed from the radial direction.
[0028] As described above, in the capped bottle 2 of this embodiment, since multiple placement recesses 26 are provided at intervals in the circumferential direction, the circumferential movement of the grounding portion 19 inserted into the placement recess 26 is restricted by a pair of side surfaces 26c of the placement recess 26, thereby preventing the capped bottles 2 from wobbling in the radial and circumferential directions when stacked vertically.
[0029] Next, a bottle 3 with a cap according to the third embodiment of the present invention will be described with reference to Figures 4 and 5. In this third embodiment, the same reference numerals are used for parts that are the same as those in the first embodiment, and their descriptions are omitted. Only the differences will be described.
[0030] In the capped bottle 3 of this embodiment, the placement recess 26 is located radially outward from the inner portion 22b. The placement recess 26 reaches the outer peripheral edge of the top wall 22 and opens outward toward the side of the side wall 21. The placement recess 26 opens at the upper end of the outer peripheral surface of the side wall 21. The placement recess 26 is defined by a bottom surface 26a and an inner peripheral surface 26d located at the radial inner end and facing radially outward.
[0031] The inner circumferential surface of the lower end of the leg portion 18 of the other capped bottle 3 is supported by the inner circumferential surface 26d of the placement recess 26. Here, the inner circumferential surface of the lower end of the leg portion 18 extends radially inward as it moves upward from the radially inward inner end of the ground portion 19. The inner circumferential surface of the lower end of the leg portion 18 and the inner circumferential surface 26d of the placement recess 26 exhibit a curved shape that protrudes radially inward in a longitudinal cross-sectional view along the vertical and radial directions, but they may also exhibit a straight shape. The inner circumferential surface of the lower end of the leg portion 18 and the inner circumferential surface 26d of the placement recess 26 coincide with or are equivalent to each other in a longitudinal cross-sectional view along the vertical and radial directions.
[0032] As described above, with the capped bottle 3 according to this embodiment, the radial movement of the contact portion 19 of other capped bottles 3 inserted into the placement recess 26 is restricted by the inner circumferential surface 26d of the placement recess 26. This prevents the other capped bottles 3 from wobbling radially when stacked vertically, and allows the capped bottles 3 to be stacked stably vertically.
[0033] Next, a bottle 4 with a cap according to the fourth embodiment of the present invention will be described with reference to Figure 6. In this fourth embodiment, the same reference numerals are used for parts that are identical to those in the third embodiment, and their descriptions are omitted. Only the differences will be described.
[0034] In the capped bottle 4 of this embodiment, multiple placement recesses 26 are provided at intervals in the circumferential direction. Multiple contact portions 19 from other capped bottles 4 are individually inserted into the multiple placement recesses 26. The number of placement recesses 26 is the same as the number of leg portions 18 and vertical groove portions 17, respectively. The arrangement recess 26 is defined by a bottom surface 26a and an inner circumferential surface 26d, and a pair of side surfaces 26c located at both ends in the circumferential direction and facing each other in the circumferential direction. The entire lower end of the leg portion 18, excluding the outer circumferential surface facing radially outward, is in contact with the bottom surface 26a, the inner circumferential surface 26d, and the pair of side surfaces 26c.
[0035] The side surface 26c of the arrangement recess 26 supports the side surface facing the circumferential direction of the lower end of the leg portion 18 of the other capped bottle 4. Here, both side surfaces of the lower end of the leg portion 18 extend outward in the circumferential direction, moving away from each other in the circumferential direction as they move upward from both ends of the circumferential direction of the ground contact portion 19. The side surface of the lower end of the leg portion 18 and the side surface 26c of the arrangement recess 26 have a curved shape that protrudes outward in the circumferential direction when viewed from the radial direction, but they may also have a straight shape. The side surface of the lower end of the leg portion 18 and the side surface 26c of the arrangement recess 26 coincide with or are equal to each other when viewed from the radial direction.
[0036] As described above, in the capped bottle 4 according to this embodiment, since the placement recesses 26 are provided in multiple locations spaced apart in the circumferential direction, the circumferential movement of the grounding portion 19 inserted into the placement recesses 26 is restricted by the pair of side surfaces 26c of the placement recesses 26, thereby preventing the capped bottles 4 from wobbling in the radial and circumferential directions when stacked vertically.
[0037] Furthermore, the technical scope of the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention.
[0038] For example, the arrangement recess 26 may be configured to have a bottom surface 26a, an outer peripheral surface 26b, a pair of side surfaces 26c, and an inner peripheral surface 26d.
[0039] Furthermore, without departing from the spirit of the present invention, the components in the above embodiments may be replaced with well-known components as appropriate, and the above embodiments and modifications may be combined as appropriate. [Explanation of symbols]
[0040] 1, 2, 3, 4 Bottles with caps 10 bottles 11 Bottom 12 Mouth 13 Shoulder 14 Torso 15 Central wall section 16 Connecting peripheral wall section 17. Longitudinal groove section 18 Legs 19 Grounding part 20 caps 22 Top Wall 26 Placement recess O Central axis (bottle axis)
Claims
1. The bottle is formed integrally from a synthetic resin material, with the mouth, shoulder, body, and bottom arranged in this order from top to bottom along the bottle axis, and the mouth, shoulder, body, and bottom being connected in this order. A capped bottle comprising a top-shaped cylindrical cap detachably attached to the mouth, The bottom portion comprises a central wall portion located on the bottle axis and a connecting peripheral wall portion that connects the outer peripheral edge of the central wall portion to the body portion. Three or more vertical grooves are formed in the connecting peripheral wall portion at intervals in the circumferential direction. In the connecting peripheral wall portion, leg portions are formed in each portion located between adjacent longitudinal groove portions in the circumferential direction, projecting downward from the central wall portion. A ground contact portion extending in the circumferential direction is formed at the lower end of the leg portion. On the upper surface of the top wall of the cap, a recess is formed over the entire circumferential area along the bottle axis. A capped bottle in which the arrangement recess is formed so that the grounding portion of another capped bottle can be inserted.
2. The bottle with a cap according to claim 1, wherein the arrangement recesses are provided in multiple locations at intervals in the circumferential direction.