JP6964476B2 - Squeeze bottle - Google Patents

Description

The present invention relates to a squeeze bottle.

Conventionally, for example, as shown in Patent Document 1 below, the plan view shape seen from the bottle axis direction is formed into a flat shape having a pair of short side portions and a pair of long side portions, and is elastically deformable. Squeeze bottles with a torso are known. In this squeeze bottle, the contents in the body are discharged through the mouth by pushing the pair of long side portions in the body in the directions of the short axes facing each other.

Japanese Patent No. 5407830

However, in the conventional squeeze bottle, there is room for improvement in reducing the pushing force applied to the body portion required to discharge the contents.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a squeeze bottle capable of reducing the pushing force applied to the body portion required for discharging the contents.

The present invention employs the following means to solve the above problems. That is, the squeeze bottle of the present invention has a flat shape having a pair of short side portions and a pair of long side portions, and has a body portion formed so as to be elastically deformable. In a squeeze bottle, a pair of vertical partition grooves extending in the bottle axis direction are arranged on the long side portion at intervals in the circumferential direction along the bottle axis, and a pair of the vertical partition grooves extend in the body portion. each portion adjacent to each other in the circumferential direction with respect to the pressed portion located between the circumferential extending transverse grooves are formed in each separate position of these transverse grooves each bottle axis direction has become equal to each other, wherein A pair of the vertical partition grooves are arranged on the long side portion at intervals in the bottle axis direction, and a horizontal partition groove for connecting the pair of the vertical partition grooves to each other in the circumferential direction is formed. It is characterized in that it is partitioned in a closed region by a vertical partition groove and a pair of the horizontal partition grooves.

According to the present invention, in the body portion, lateral grooves extending in the circumferential direction are separately formed in each portion adjacent to the pressed portion located on the long side portion in the circumferential direction, and each of these lateral grooves is formed in the bottle axial direction. Since the positions of are equal to each other, when the pressed portion is pushed inward in the minor axis direction in which the pair of long side portions face each other, the starting point is the portion adjacent to the lateral groove in the pressed portion. Therefore, the pressed portion can be easily deformed inward in the short axis direction over a wide range.
Further, since the pressed portion is partitioned on the body portion by a pair of vertical partition grooves, the pressing force applied to the pressed portion toward the inside in the minor axis direction is attempted to propagate to other portions in the body portion. , It is possible to block by the vertical partition groove, and it is possible to suppress the dispersion of the pushing force.
From the above, it is possible to reduce the pushing force applied to the body portion required to discharge the contents.

Since the pressed portion is partitioned in the closed region by a pair of vertical partition grooves and a pair of horizontal partition grooves, the pressing force applied to the pressed portion inward in the minor axis direction is applied to the other portion of the body portion. Dispersion can be reliably suppressed. In addition, when the user discharges the contents, the portion to be pushed in the body can be specified.

Further, the horizontal groove may be connected to the vertical partition groove.
In this case, since the horizontal groove is connected to the vertical partition groove, when the pressed portion is pushed inward in the minor axis direction, a large stress may be generated at the connecting portion between the horizontal groove and the vertical partition groove. This makes it possible to reliably deform the pressed portion over a wide range inward in the minor axis direction starting from this connecting portion.

Further, the lateral groove may be arranged over the entire area in the circumferential direction in the short side portion.
In this case, since the lateral grooves are arranged over the entire area in the circumferential direction of the short side portion, when the pressed portion is pushed inward in the minor axis direction, the portion of the pressed portion adjacent to the lateral groove is surely located. Can generate a large amount of stress.

According to the present invention, it is possible to reduce the pushing force applied to the body portion required to discharge the contents.

It is a side view of the squeeze bottle shown as the 1st Embodiment which concerns on this invention as seen from the minor axis direction. It is a top view of the squeeze bottle shown in FIG. It is a side view of the squeeze bottle shown as the 2nd Embodiment which concerns on this invention as seen from the minor axis direction. It is a top view of the squeeze bottle shown as the 3rd Embodiment which concerns on this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In the squeeze bottle 1 according to the present embodiment, as shown in FIG. 1, the mouth portion 11, the shoulder portion 12, the body portion 13, and the bottom portion 14 are arranged in this order from top to bottom along the bottle axis O direction. It is continuously installed and integrally formed of a synthetic resin material. The squeeze bottle 1 is formed by, for example, extrusion blow molding or biaxial stretching blow molding of a test tube-shaped preform.

The mouth portion 11 is formed in a cylindrical shape. The plan view shape of the shoulder portion 12, the body portion 13, and the bottom portion 14 as viewed from the bottle axis O direction is a flat shape having a pair of short side portions 15 and a pair of long side portions 16. That is, the shoulder portion 12, the body portion 13, and the bottom portion 14 exhibit a flat cross-sectional shape having a short axis O1 and a long axis O2 intersecting each other on the bottle axis O. The mouth portion 11, the shoulder portion 12, the body portion 13, and the bottom portion 14 are respectively arranged coaxially with the bottle shaft O.
Hereinafter, the direction in which the pair of long side portions 16 face each other when viewed from the bottle axis O direction is referred to as the short axis O1 direction, and the direction in which the pair of short side portions 15 face each other is referred to as the long axis O2 direction. The direction of orbiting around O is called the circumferential direction.

On the outer peripheral surface of the mouth portion 11, a male screw portion to which a cap (not shown) is detachably screwed is formed. The diameter of the shoulder portion 12 gradually increases from the upper side to the lower side. The body portion 13 is formed so as to be elastically deformable. The body portion 13 extends straight in the bottle axis O direction. The bottom portion 14 is formed in a bottomed cylindrical shape, and the diameter is gradually reduced from the upper side to the lower side. The body portion 13, the shoulder portion 12, and the bottom portion 14 are connected to each other in the bottle axis O direction without a step.
The body portion 13 connects the long side portion 16 and the short side portion 15 when viewed from the bottle axis O direction, and the radius of curvature is smaller than the radius of curvature R1 and R2 of the long side portion 16 and the short side portion 15, respectively. A curved corner portion 13a is provided.

Then, in the present embodiment, a pair of vertical partition grooves 17 extending in the bottle axis O direction are arranged on the long side portion 16 of the body portion 13 at intervals in the circumferential direction. In the body portion 13, lateral grooves 19 extending in the circumferential direction are separately formed in each portion adjacent to the pressed portion 18 located between the pair of vertical partition grooves 17 in the circumferential direction, and each of these lateral grooves 19 is formed. The positions of the bottle axes in the O direction are equivalent to each other.

In the illustrated example, the vertical partition groove 17 extends straight in the bottle axis O direction. The vertical partition groove 17 is arranged over the entire area of the body portion 13 in the bottle axis O direction. The vertical partition grooves 17 are arranged at both ends in the circumferential direction of the long side portion 16 of the body portion 13. The groove width of the vertical partition groove 17 is narrower than the groove width of the horizontal groove 19. The depth of the vertical partition groove 17 is equivalent to the depth of the horizontal groove 19.
The vertical partition groove 17 may be appropriately changed, for example, by bending it in the circumferential direction and extending it in the bottle axis O direction. The groove width of the vertical partition groove 17 may be greater than or equal to the size of the groove width of the horizontal groove 19. The depths of the vertical partition groove 17 and the horizontal groove 19 may be different from each other.

A pair of vertical partition grooves 17 are arranged on the long side portion 16 of the body portion 13 at intervals in the bottle axis O direction, and horizontal partition grooves 21 for connecting the pair of vertical partition grooves 17 to each other in the circumferential direction are formed. As a result, the above-mentioned pressed portion 18 is partitioned into a closed region by a pair of vertical partition grooves 17 and a pair of horizontal partition grooves 21. At least a part of the pressed portion 18 is located at the center of the long side portion 16 of the body portion 13. In the illustrated example, the central portion of the pressed portion 18 is located at the central portion of the long side portion 16 of the body portion 13.
The horizontal partition groove 21 connects the ends of the pair of vertical partition grooves 17 in the bottle axis O direction in the circumferential direction. The groove width of the horizontal partition groove 21 is the same as the groove width of the vertical partition groove 17. The depth of the horizontal partition groove 21 is equal to the depth of the vertical partition groove 17.

The pressed portion 18 may be positioned at a position away from the central portion on the long side portion 16 of the body portion 13. The horizontal partition groove 21 may, for example, connect the intermediate portions of the pair of vertical partition grooves 17 in the bottle axis O direction in the circumferential direction. The groove widths of the horizontal partition groove 21 and the vertical partition groove 17 may be different from each other. The depths of the horizontal partition groove 21 and the vertical partition groove 17 may be different from each other.

The lateral partition groove 21 exhibits a protruding curved shape toward the outside in the bottle axis O direction when viewed from the short axis O1 direction. The pressed portion 18 has a rectangular shape or an elliptical shape that is long in the bottle axis O direction when viewed from the short axis O1 direction. In the illustrated example, the pressed portion 18 is a rectangle whose long side extends straight in the bottle axis O direction and whose short side has a protruding curve toward the outside in the bottle axis O direction when viewed from the short axis O1 direction. It presents a shape. Of the pair of horizontal partition grooves 21, the upper end of the horizontal partition groove 21 located on the upper side is located on the shoulder portion 12, and the lower end portion of the horizontal partition groove 21 located on the lower side is located on the peripheral wall of the bottom portion 14. ..
The entire horizontal partition groove 21 may be located on the body portion 13. The lateral partition groove 21 may be appropriately changed, for example, extending straight in the circumferential direction when viewed from the minor axis O1 direction. It is not necessary to form the lateral partition groove 21 in the body portion 13 and to make the pressed portion 18 a closed region. In this case, the long side portion 16 of the body portion 13 may be provided with a display portion capable of specifying a position to be pushed when the user discharges the contents.

The lateral groove 19 is arranged in a portion of the body portion 13 adjacent to a portion where the user pushes in when discharging the contents. In the illustrated example, the lateral grooves 19 are arranged one by one at the central portion of the body portion 13 in the bottle axis O direction at intervals in the circumferential direction. The positions of the lateral groove 19 and the central portion of the pressed portion 18 in the bottle axis O direction in the bottle axis O direction are equivalent to each other.
The positions of the lateral groove 19 and the central portion of the pressed portion 18 in the bottle axis O direction in the bottle axis O direction may be different from each other. Further, when the pressed portion 18 is not closed and the display portion is provided on the long side portion 16 of the body portion 13, the lateral groove 19 may be arranged in the portion of the body portion 13 adjacent to the display portion. good.
The horizontal groove 19 is connected to the vertical partition groove 17. The lateral groove 19 is arranged in a portion of the body portion 13 located outside the pressed portion 18. The lateral grooves 19 are arranged over the entire area in the circumferential direction of the short side portion 15 of the body portion 13.

Here, the pressed portion 18 is separately formed on each of the pair of long side portions 16 in the body portion 13. These pressed portions 18 have the same shape and the same size as each other. The horizontal groove 19 connects the vertical partition grooves 17 adjacent to each other with the short side portion 15 of the body portion 13 sandwiched in the circumferential direction. The lateral groove 19 extends continuously between these vertical partition grooves 17 in the circumferential direction. The lateral groove 19 extends straight in the circumferential direction.
The lateral groove 19 may be appropriately changed, for example, by bending it in the bottle axis O direction and extending it in the circumferential direction. The lateral groove 19 may extend intermittently in the circumferential direction between adjacent vertical partition grooves 17 with the short side portion 15 of the body portion 13 sandwiched in the circumferential direction.

In the illustrated example, the radius of curvature R1 of the long side portion 16 on the outer peripheral surface of the body portion 13 is about 161 mm when viewed from the direction of the bottle axis O, and the radius of curvature R2 of the short side portion 15 on the outer peripheral surface of the body portion 13 is set to about 161 mm. Is about 39.5 mm. The size L2 in the major axis O2 direction on the outer peripheral surface of the body portion 13 is about 75.1 mm, and the size L1 in the minor axis O1 direction on the outer peripheral surface of the body portion 13 is about 49.3 mm. The size of the body portion 13 in the bottle axis O direction is about 160 mm. The content of the squeeze bottle 1 is 400 ml.

As described above, according to the squeeze bottle 1 according to the present embodiment, in the body portion 13, a lateral groove extending in the circumferential direction is formed in each portion of the body portion 13 adjacent to the pressed portion 18 located on the long side portion 16 in the circumferential direction. Since 19s are formed separately and the positions of the lateral grooves 19 in the bottle axis O direction are equal to each other, when the pressed portion 18 is pushed inward in the minor axis O1 direction, the pressed portion 18 is pressed. Starting from the portion of the pressing portion 18 adjacent to the lateral groove 19, the pressed portion 18 can be easily deformed inward in the minor axis O1 direction over a wide range.
Further, since the pressed portion 18 is partitioned in the body portion 13 by a pair of vertical partition grooves 17, the pushing force applied to the pressed portion 18 inward in the minor axis O1 direction is applied to the other pressing force in the body portion 13. Even if it tries to propagate to the portion, it can be blocked by the vertical partition groove 17, and the pushing force can be suppressed from being dispersed.
From the above, it is possible to reduce the pushing force applied to the body portion 13 required to discharge the contents.

Further, since the pressed portion 18 is partitioned in the closed region by the pair of vertical partition grooves 17 and the pair of horizontal partition grooves 21, the pressing force applied to the pressed portion 18 toward the inside in the minor axis O1 direction is applied. , Dispersion to other parts of the body portion 13 can be reliably suppressed. In addition, when the user discharges the contents, the portion to be pushed in the body portion 13 can be specified.
Further, since the horizontal groove 19 is connected to the vertical partition groove 17, when the pressed portion 18 is pushed inward in the minor axis O1 direction, a large stress is applied to the connecting portion between the horizontal groove 19 and the vertical partition groove 17. Can be generated, and the pressed portion 18 can be reliably deformed inward in the minor axis O1 direction over a wide range starting from this connecting portion.
Further, since the lateral groove 19 is arranged over the entire area in the circumferential direction of the short side portion 15, when the pressed portion 18 is pushed inward in the minor axis O1 direction, the lateral groove 19 is formed in the pressed portion 18. A large stress can be surely generated in the adjacent portion.

Next, the verification test for the action and effect described above will be described.

Five types of squeeze bottles were created as analysis models.
As the model of Example 1, the squeeze bottle 1 shown in FIGS. 1 and 2 was adopted.
As a model of the second embodiment, as shown in FIG. 3, a squeeze bottle 2 in which a lateral groove 19 is additionally arranged is adopted with respect to the squeeze bottle 1 shown in FIGS. 1 and 2. In this model, three horizontal grooves 19 are arranged at equal intervals in the bottle axis O direction, and at the center of the vertical partition groove 17 in the bottle axis O direction and at both ends in the bottle axis O direction, respectively. Connected separately.
As a model of the third embodiment, as shown in FIG. 4, the radius of curvature R2 of the short side portion 15 on the outer peripheral surface of the body portion 13 viewed from the bottle axis O direction is set to about 22.2 mm, and FIGS. 1 and 2 The squeeze bottle 3 which is smaller than the squeeze bottle 1 shown in 1 and has an elliptical shape in which the body portion 13 does not have the corner portion 13a when viewed from the bottle axis O direction is adopted.
As a model of Comparative Example 1, a squeeze bottle having no vertical partition groove 17, horizontal partition groove 21, and horizontal groove 19 was adopted for the squeeze bottle 1 shown in FIGS. 1 and 2.
As a model of Comparative Example 2, a squeeze bottle having no lateral groove 19 was adopted for the squeeze bottle 1 shown in FIGS. 1 and 2.

Then, each model is pushed inward in the direction of the short axis O1 with two types of pressing bodies, which will be described later, and deformed by 10 mm in this direction to apply a load when about 40 ml of the contents are discharged. Calculated by numerical analysis.
One of the two types of pressing bodies uses a rigid sphere with a radius of 10 mm, and the central part of the long side of the body is pushed inward in the minor axis O1 direction, and the other one has a diameter. A 20 mm rigid round bar is used, and the central part of the long side of the body in the O direction of the bottle axis is placed sideways so as to extend in the circumferential direction. I pushed it towards.

As a result, regardless of the type of pressing body, the load is reduced by about 10% in the model of Comparative Example 2 and by about 30% in the model of Example 1 with respect to the model of Comparative Example 1, and the examples It was confirmed that the model 2 had a reduction of about 25% and the model of Example 3 had a reduction of about 40%.
Of these, since the load is higher in the model of the second embodiment than in the model of the first embodiment, the discharge amount and the pushing force can be adjusted by adjusting the number of the lateral grooves 19. confirmed.

Next, after the long side portion of the body portion was deformed as described above, the time until the restoration deformation was completed when the pressing by the pressing body was released was calculated by numerical analysis.
As a result, regardless of the type of pressing body, the time is almost the same in the model of Example 1 as compared with the model of Comparative Example 1, while it is about 55% longer in the model of Example 3. confirmed.
As a result, it was confirmed that the model of Example 1 in which the body portion 13 has the corner portion 13a is more preferable in terms of operability.

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 above-described embodiment, the pressed portion 18 in the closed region has a configuration in which it has a long rectangular shape or an elliptical shape in the bottle axis O direction when viewed from the short axis O1 direction, but the present invention is not limited to this, and for example, a circular shape. Or, it may be changed as appropriate, such as making it a conformal shape. The size of the pressed portion 18 may be appropriately changed according to the discharge amount, the pushing force, and the like.
In the above embodiment, the horizontal groove 19 is connected to the vertical partition groove 17, but it may be separated from the vertical partition groove 17 in the circumferential direction.
In the above embodiment, the lateral groove 19 is arranged on the short side portion 15 of the body portion 13, but may be arranged only on the long side portion 16 of the body portion 13.

The synthetic resin material forming the squeeze bottles 1, 2 and 3 may be appropriately changed, for example, polyethylene terephthalate, polyethylene naphthalate, amorphous polyester, or a blend material thereof.
The squeeze bottles 1, 2 and 3 are not limited to the single-layer structure and may be a laminated structure having an intermediate layer. Examples of the intermediate layer include a layer made of a resin material having a gas barrier property, a layer made of a recycled material, a layer made of a resin material having an oxygen absorption property, a combination of these layers, a vapor deposition layer and the like.

In addition, it is possible to replace the constituent elements in the embodiment with well-known constituent elements as appropriate without departing from the spirit of the present invention, and the modified examples may be appropriately combined.

1, 2, 3 Squeeze bottle 13 Body part 15 Short side part 16 Long side part 17 Vertical section groove 18 Pressed part 19 Horizontal groove 21 Horizontal section groove O Bottle shaft

Claims (3)

A squeeze bottle having a flat shape having a pair of short side portions and a pair of long side portions and having an elastically deformable body portion in a plan view shape when viewed from the bottle axis direction.
A pair of vertical partition grooves extending in the bottle axis direction are arranged on the long side portion at intervals in the circumferential direction along the bottle axis.
In the body portion, lateral grooves extending in the circumferential direction are separately formed in each portion adjacent to the pressed portion located between the pair of vertical partition grooves in the circumferential direction.
The positions of each of these lateral grooves in the bottle axial direction are equivalent to each other .
A pair of the long side portions are arranged at intervals in the bottle axis direction, and a horizontal partition groove for connecting the pair of vertical partition grooves to each other in the circumferential direction is formed.
A squeeze bottle characterized in that the pressed portion is partitioned into a closed region by a pair of vertical partition grooves and a pair of horizontal partition grooves. The transverse grooves, squeeze bottle according to claim 1, characterized in that connected to the longitudinal section groove. The squeeze bottle according to claim 1 or 2 , wherein the lateral groove is arranged over the entire area in the circumferential direction in the short side portion.

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