JP7527203B2 - Pinch grip bottle type container - Google Patents

Description

The present invention relates to a pinch-grip bottle-type container.

Conventionally, pinch-grip bottle-type containers have been known in which a pair of side regions of the body that face each other radially across the central axis of the mouth are each formed with a finger rest recess, and the back region located between the pair of side regions and the finger rest recesses form a grip portion.
A known example of this type of pinch-grip bottle-type container is one in which, as shown in Patent Document 1 below, the side region has an inclined portion formed on the outer peripheral edge of the finger rest recess that extends radially outward from the lower edge of the bottom side of the container along the central axis toward the bottom.

Patent No. 5177389

However, in the conventional pinch-grip bottle-type container, when the container is dropped with the contents contained and the mouth sealed, there is a risk that the finger rest recess will be inverted and deformed starting from the connection between the lower edge of the finger rest recess and the inclined portion due to water hammer.

The present invention aims to provide a pinch-grip bottle-type container that can prevent the finger rest recess from being inverted and deformed when the container is dropped with the contents contained and the mouth sealed.

The present invention employs the following means to solve the above problems. That is, the pinch-grip type bottle-type container of the present invention is a pinch-grip type bottle-type container in which finger rest recesses are formed separately in a pair of side regions of a body that face each other across a central axis of a mouth portion in the radial direction, and a back region located between the pair of side regions and the finger rest recesses serve as grip portions, in which an inclined portion is formed on the outer periphery of the finger rest recess in the side region, the inclined portion extending radially outward as it moves downward from a lower end edge on the bottom side of the pinch-grip type bottle-type container along the central axis, and a reinforcing groove is formed at a connection portion between the finger rest recess and the inclined portion, the reinforcing groove extends in the vertical direction, and an inclination angle of a lower portion of the reinforcing groove with respect to the central axis is larger than an inclination angle of an upper portion of the reinforcing groove with respect to the central axis in a vertical cross section.

In the present invention, reinforcing grooves are formed in both the finger rest recess and the inclined portion at the connection portion between the finger rest recess and the inclined portion, which makes it possible to increase the rigidity of the connection portion.Even if a large localized load is applied to the connection portion due to water hammering, which occurs when the container is dropped with the contents contained and the mouth sealed, the finger rest recess can be prevented from being inverted and deformed from the connection portion.
Since the reinforcing groove extends in the vertical direction, the rigidity of the connection portion against water hammer can be reliably increased compared to a configuration in which the reinforcing groove extends in the circumferential direction, and the reinforcing groove can be formed with high precision during blow molding of the container.
When viewed in vertical cross section, the inclination angle of the lower portion of the reinforcing groove relative to the central axis is greater than the inclination angle of the upper portion relative to the central axis. Therefore, when the above-mentioned water hammer action occurs, the lower portion of the reinforcing groove exerts a rib effect, thereby reliably suppressing inverted deformation of the finger rest recess.

In the longitudinal cross-sectional view, the lower portion of the reinforcing groove may extend upward as it moves radially inward.

In this case, in the longitudinal cross-sectional view, the lower part of the reinforcing groove extends upward as it moves radially inward, so that when the water hammering occurs, the occurrence of stress concentration points on the inner surface of the reinforcing groove is suppressed, while the lower part of the reinforcing groove can exert a rib effect.

In the longitudinal cross-sectional view, the length of the lower portion of the reinforcing groove may be greater than or equal to the length of the upper portion of the reinforcing groove.

In this case, the length of the lower part of the reinforcing groove is equal to or greater than the length of the upper part of the reinforcing groove in the longitudinal cross section. This prevents stress concentration on the inner surface of the reinforcing groove when the water hammer occurs, and allows the lower part of the reinforcing groove to exert a rib effect.

This invention makes it possible to prevent the finger rest recess from being inverted and deformed when the container is dropped with the contents contained and the mouth sealed.

FIG. 1 is a side view of a pinch-grip bottle-type container according to one embodiment. FIG. 2 is a rear view, including a partial vertical cross section, of the pinch-grip bottle-type container shown in FIG. 1 . 3 is a cross-sectional view taken along line III-III in FIG. 1 and FIG. 2.

Hereinafter, a pinch-grip bottle-type container according to one embodiment will be described with reference to the drawings.
As shown in Figures 1 and 2, the pinch-grip type bottle container 1 according to this embodiment includes a mouth portion 11, a shoulder portion 12, a body portion 13, and a bottom portion 14, which are generally arranged in this order with their central axes aligned on a common axis. The internal volume of the pinch-grip type bottle container 1 is large enough to hold, for example, 200 ml to 4000 ml of contents. In the illustrated example, the pinch-grip type bottle container 1 is large enough to hold approximately 2700 ml of contents.

Hereinafter, the common axis will be referred to as the central axis O, the mouth 11 side along the direction of the central axis O will be referred to as the upper side, and the bottom 14 side 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 rotates around the central axis O will be referred to as the circumferential direction.
The pinch-grip bottle-type container 1 is integrally formed from a synthetic resin material by blow molding a preform formed into a bottomed cylindrical shape 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.

A finger rest recess 15 is formed separately in a pair of side regions 13a of the body 13 that face each other across the central axis O in the radial direction. The back region 13b of the body 13, located between the pair of side regions 13a, and the finger rest recess 15 form the grip portion G that the user grasps when lifting the pinch-grip bottle-type container 1. As shown in FIG. 3, the back region 13b is the shorter of the pair of regions located between the pair of side regions 13a in the body 13 in the circumferential direction.

1, the finger rest recess 15 has a vertically long rectangular shape in a front view from the outside in the radial direction. The finger rest recess 15 is defined by a bottom surface 15a facing the outside in the radial direction, and a plurality of side wall surfaces 15b, 15c rising from the outer periphery of the bottom surface 15a toward the outside in the radial direction.
The bottom surface 15a extends linearly in a vertical cross section. A plurality of protrusions 18 are formed on the bottom surface 15a at intervals in the vertical direction. Each protrusion 18 is formed in a rectangular parallelepiped shape that is long in the circumferential direction.

The multiple side wall surfaces 15b, 15c include an upper wall surface 15b that extends radially outward from the upper edge of the bottom surface 15a and faces downward, and a lower wall surface 15c that extends radially outward from the lower edge of the bottom surface 15a and faces upward.

As shown in FIG. 2, the upper wall surface 15b extends upward as it moves radially outward. The lower wall surface 15c extends downward as it moves radially outward. In the vertical cross section, the length of the upper wall surface 15b is longer than the length of the lower wall surface 15c. The radial inner edge of the lower wall surface 15c and the lower edge of the bottom surface 15a are smoothly connected without any steps. In the vertical cross section, the lower wall surface 15c presents a concave curve that opens upward. The radial outer edge of the lower wall surface 15c forms the lower edge of the finger rest recess 15.

A sloping portion 16 is formed in the side region 13a, extending radially outward as it moves downward from the lower edge of the finger rest recess 15. The angle of inclination of the sloping portion 16 with respect to the central axis O is smaller than the angle of inclination of the lower wall surface 15c of the finger rest recess 15 with respect to the central axis O. A connection portion 17 between the upper edge of the sloping portion 16 and the lower edge of the finger rest recess 15 forms a corner that is sharpened radially outward. This connection portion 17 extends straight in the circumferential direction when the finger rest recess 15 is viewed from the front. This connection portion 17 is located radially inward from the radial outer edge of the upper wall surface 15b.

A reinforcing groove 21 is formed in both the finger rest recess 15 and the inclined portion 16 at the connection portion 17 between the finger rest recess 15 and the inclined portion 16. The reinforcing groove 21 is located in the circumferential center of the finger rest recess 15. The vertical size of the reinforcing groove 21 is greater than the circumferential size of the reinforcing groove 21, and the reinforcing groove 21 extends in the vertical direction. The reinforcing groove 21 is located below the lower edge of the bottom surface 15a of the finger rest recess 15, and is formed integrally with the lower wall surface 15c and the upper portion of the inclined portion 16. The reinforcing groove 21 is located in a portion of the lower wall surface 15c that is located radially outward from the radial inner end.

The width of the upper edge of the reinforcing groove 21 is wider than the width of the lower edge of the reinforcing groove 21. The width of the reinforcing groove 21 increases from the bottom to the top. The reinforcing groove 21 has an inverted triangular shape in a front view seen from the outside in the radial direction.
3, the inner surface of the reinforcing groove 21 is formed into a concave curved surface that extends radially inward along the circumferential direction toward the center thereof. The vertical distance between the reinforcing groove 21 and the lowest protrusion 18 among the multiple protrusions 18 is equal to the distance between adjacent protrusions 18 in the vertical direction.

The vertical size of the reinforcing groove 21 is larger than the vertical gap between adjacent protrusions 18 in the vertical direction. The vertical size of the reinforcing groove 21 is smaller than the pitch interval between adjacent protrusions 18 in the vertical direction. The vertical size of the reinforcing groove 21 is approximately half the vertical size of the inclined portion 16. The circumferential size of the reinforcing groove 21 is approximately one-third the circumferential size of the finger rest recess 15.
The size of the reinforcing groove 21 is not limited to the illustrated form and may be changed as appropriate.

In this embodiment, in the vertical cross-sectional view, the inclination angle θ1 of the lower portion 21a of the reinforcing groove 21 relative to the central axis O is greater than the inclination angle θ2 of the upper portion 21b relative to the central axis O.

In the vertical cross section, the lower portion 21a of the reinforcing groove 21 extends upward as it moves radially inward. In the illustrated example, in the vertical cross section, the entire reinforcing groove 21, including the connection portion between the lower portion 21a and the upper portion 21b, and the upper portion 21b, extends upward as it moves radially inward. In the vertical cross section, the length of the lower portion 21a of the reinforcing groove 21 is equal to or longer than the length of the upper portion 21b of the reinforcing groove 21. In the vertical cross section, the connection portion between the lower portion 21a and the upper portion 21b of the reinforcing groove 21 has a curved shape recessed radially inward.
The lower portion 21 a of the reinforcing groove 21 is located only in the inclined portion 16 , the upper portion 21 b of the reinforcing groove 21 is located in both the inclined portion 16 and the finger rest recess 15 , and the connection portion of the reinforcing groove 21 is located in the inclined portion 16 .

As described above, according to the pinch-grip bottle-type container 1 of this embodiment, the reinforcing grooves 21 are formed in the connection portion 17 between the finger rest recess 15 and the inclined portion 16, which makes it possible to increase the rigidity of the connection portion 17. Even if a large local load is applied to the connection portion 17 due to a water hammer effect that occurs when the container is dropped with the contents contained and the mouth portion 11 sealed, the finger rest recess 15 can be prevented from being inverted and deformed radially outward from the connection portion 17.

Since the reinforcing groove 21 extends in the vertical direction, the rigidity of the connection portion 17 against water hammer can be reliably increased compared to a configuration in which the reinforcing groove 21 extends in the circumferential direction, and the reinforcing groove 21 can be formed with high precision during blow molding of the container 1.
In the vertical cross-sectional view, the inclination angle θ1 of the lower portion 21a of the reinforcing groove 21 relative to the central axis O is larger than the inclination angle θ2 of the upper portion 21b relative to the central axis O. Therefore, when the above-mentioned water hammer action occurs, the lower portion 21a of the reinforcing groove 21 exerts a rib effect, thereby reliably suppressing the inverted deformation of the finger rest recess 15.

In the vertical cross-sectional view, the lower portion 21a of the reinforcing groove 21 extends upward as it moves radially inward, so that when the water hammering action described above occurs, the occurrence of stress concentration points on the inner surface of the reinforcing groove 21 is suppressed, while the lower portion 21a of the reinforcing groove 21 can exert a rib effect.

In the longitudinal cross-sectional view, the length of the lower portion 21a of the reinforcing groove 21 is equal to or greater than the length of the upper portion 21b of the reinforcing groove 21, so that when the water hammering occurs, the occurrence of stress concentration points on the inner surface of the reinforcing groove 21 is suppressed, while the lower portion 21a of the reinforcing groove 21 can exert a rib effect.

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.

For example, in the vertical cross-sectional view, the lower portion 21a of the reinforcing groove 21 may extend straight in the radial direction.
In the vertical cross-sectional view, the upper portion 21b of the reinforcing groove 21 may extend straight in the vertical direction.
In the vertical cross-sectional view, the length of the lower portion 21 a of the reinforcing groove 21 may be shorter than the length of the upper portion 21 b of the reinforcing groove 21 .
The lower portion 21a of the reinforcing groove 21 is positioned on both the inclined portion 16 and the finger rest recess 15,
The upper portion 21 b of the reinforcing groove 21 may be positioned only in the finger rest recess 15 , and the connection portion of the reinforcing groove 21 may be positioned in the finger rest recess 15 .

For example, in the above embodiment, the width of the upper edge of the reinforcing groove 21 is wider than the width of the lower edge of the reinforcing groove 21, but the width of the reinforcing groove 21 may be the same over the entire length in the vertical direction, or the width of the lower edge of the reinforcing groove 21 may be wider than the width of the upper edge of the reinforcing groove 21.
The upper edge of the reinforcing groove 21 may be located above the lower edge of the bottom surface 15a of the finger rest recess 15, or may be located at the lower edge of the bottom surface 15a.
A connection portion 17 between the upper end edge of the inclined portion 16 and the lower end edge of the finger rest recess 15 may extend in a curved shape projecting upward or downward when the finger rest recess 15 is viewed from the front.

The synthetic resin material forming the pinch-grip type bottle-type container 1 may be appropriately changed, for example, polyethylene terephthalate, polyethylene naphthalate, amorphous polyester, or a blend of these materials.
The pinch-grip bottle-type container 1 is not limited to a single-layer structure, but may be a laminated structure having an intermediate layer. Examples of the intermediate layer include a layer made of a resin material having gas barrier properties, a layer made of a recycled material, or a layer made of a resin material having oxygen absorbing properties.
In the above embodiment, the cross-sectional shape of the shoulder portion 12 and the bottom portion 14 perpendicular to the central axis O is circular, but this is not limited thereto and may be changed as appropriate, for example, to a square shape.

In addition, the components in the above embodiment may be replaced with known components as appropriate without departing from the spirit of the present invention, and the above embodiment and the above modified examples may be combined as appropriate.

REFERENCE SIGNS LIST 1 pinch-grip bottle-type container 11 mouth 13 body 13a side region 13b rear region 14 bottom 15 finger rest recess 16 inclined portion 17 connection portion 21 reinforcing groove 21a lower portion 21b upper portion G grip portion O central axis θ1, θ2 inclination angle

Claims (3)

A pinch-grip bottle-type container, in which finger rest recesses are formed separately on a pair of side regions of a body portion that face each other across a central axis of a mouth portion in a radial direction, and a back region located between the pair of side regions and the finger rest recesses are used as grip portions,
In the side region, an inclined portion is formed that extends radially outward from the lower end edge of the bottom side of the pinch-grip type bottle-type container along the central axis toward the lower side of the outer peripheral edge of the finger rest recess,
A reinforcing groove is formed at a connection portion between the finger rest recess and the inclined portion, the reinforcing groove being located in both the finger rest recess and the inclined portion;
The reinforcing groove extends in the vertical direction,
A pinch-grip bottle-type container, in which, when viewed in vertical cross section along the up-down direction, the inclination angle of the lower portion of the reinforcing groove relative to the central axis is greater than the inclination angle of the upper portion of the reinforcing groove relative to the central axis. The pinch-grip bottle-type container according to claim 1, wherein, in the vertical cross-sectional view, the lower portion of the reinforcing groove extends upward as it moves radially inward. The pinch-grip bottle-type container according to claim 1 or 2, wherein the length of the lower part of the reinforcing groove is equal to or greater than the length of the upper part of the reinforcing groove in the vertical cross-sectional view.

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