JP2024020954A - container - Google Patents

Abstract

To provide a container with a lid that is easy to open and close and that is prevented from coming off during transportation.SOLUTION: The container includes a container body, a lid, and a retaining member. The lid is configured to be attachable to the container body so as to close an opening of the container body. The retaining member has an annular portion and a band portion having both ends connected to the annular portion. The annular portion is attached to the container body so as to surround the side of the container body. The band portion is configured to contact the top surface of the lid to prevent the lid from coming off.SELECTED DRAWING: Figure 1

Description

The present invention relates to containers. This container can be suitably used as a household goods, a food container, a storage container, a container sold by weight, a reusable container, etc., and is particularly suitable for applications that require sealing when carried around in a bag.

Patent Document 1 discloses a plastic container that can be sealed tightly by attaching a screw-type lid (cap) to the opening.

Japanese Patent Application Publication No. 2008-273597

Containers with screw-type lids such as those disclosed in Patent Document 1 take time to open and close, and the male threaded portion of the mouth portion and the female threaded portion of the cap do not mesh properly, resulting in the lid being installed diagonally. There are cases where On the other hand, containers with plug-type lids are easy to open and close, but there is a problem in that the lids tend to come off during transportation.

The present invention has been made in view of these circumstances, and it is an object of the present invention to provide a container whose lid is easy to open and close and whose lid is prevented from coming off during transportation.

According to the present invention, the following inventions are provided.
[1] A container main body, a lid, and a holding member, the lid is configured to be attachable to the container main body so as to close an opening of the container main body, and the holding member has an annular portion and both ends thereof. A belt part connected to the annular part is provided, the annular part is attached to the container main body so as to surround a side surface of the container main body, and the belt part comes into contact with the upper surface of the lid so that the lid comes off. A container configured to inhibit
[2] The container according to [1], wherein the band portion includes a gripping piece protruding from the band portion.
[3] The container according to [1] or [2], wherein the annular portion and the band portion are made of rubber.
[4] The container according to any one of [1] to [3], wherein the container main body is located at a position closer to the open end side of the container main body than the part to which the annular part is attached. . A container, comprising a locking portion that prevents the annular portion from moving toward an open end of the container body.
[5] The container according to any one of [1] to [4], wherein the lid includes an insertion portion inserted into the container body, and an annular packing is attached to the insertion portion. The annular packing includes an annular base and an annular convex portion projecting radially outward from the annular base, the annular convex portion being tapered, and the lid being attached to the container body. The container is configured such that the annular convex portion contacts the inner surface of the container main body, and the annular base does not contact the inner surface of the container main body.

In the container of the present invention, the band of the holding member comes into contact with the top surface of the lid to prevent the lid from coming off, so it is possible to prevent the lid from coming off during transportation without providing a screw between the lid and the container body. Ru. In addition, since the annular portion of the holding member is attached to the container body so as to surround the side surface of the container body, the holding member can be left attached to the container body with the band removed from the lid. After the contents are taken out from the container body, the band can be quickly returned to the state in which it contacts the top surface of the lid. Therefore, in the container of the present invention, the lid can be easily opened and closed, and the lid is prevented from coming off during transportation.

FIG. 1 is a perspective view of a container 1 according to a first embodiment of the present invention. The dashed-dotted line in the figure represents the boundary line where the curvature of the surface forming the surface shape changes. The same applies to other figures. FIG. 2 is a perspective view of the container 1 in FIG. 1 with the holding member 4 removed. FIG. 3 is a perspective view of the container body 2 of FIG. 2 with the lid 3 removed. 4A is a front view of the lid 3 of FIG. 3, and FIG. 4B is a cross-sectional view of the lid 3 of FIG. 4A, passing through the center of the lid 3 and perpendicular to the paper surface. FIG. 5A is a perspective view of the first member 3g and second member 3h for manufacturing the lid 3, and FIG. 5B is a sectional view corresponding to FIG. 4B of the first member 3g and second member 3h. be. 6A is a sectional view of the container 1 in FIG. 1, passing through the center plane in the thickness direction of the gripping piece 4c of the holding member 4, and FIG. 6B is an enlarged view of region B in FIG. 6A. 2 is a front view of the container 1 of FIG. 1. FIG. FIG. 8 is a front view of a state in which the position of the band portion 4b is shifted from the state shown in FIG. 7 so that the lid 3 can be removed. It is a perspective view of the container main body 2 of the container 1 of 2nd Embodiment of this invention.

Embodiments of the present invention will be described below. Various features shown in the embodiments described below can be combined with each other. Further, the invention can be realized independently for each feature.

1. First Embodiment As shown in FIG. 1, a container 1 according to a first embodiment of the present invention includes a container body 2, a lid 3, and a holding member 4. In this specification, "upper" and "lower" mean "upper" and "lower" when the bottom 2f of the container body 2 is grounded on a horizontal surface. In other words, "vertical direction" means a direction perpendicular to the plane defined by the open end 2d of the container body 2.

As shown in FIG. 3, the container body 2 has a cylindrical shape with a bottom and includes a side surface 2a and an opening 2b. As shown in FIGS. 2 and 3, the lid 3 is configured to be attachable to the container body 2 so as to close the opening 2b of the container body 2. As shown in FIG. 2, the holding member 4 includes an annular portion 4a and a band portion 4b whose both ends are connected to the annular portion 4a. As shown in FIGS. 1 and 2, the annular portion 4a is attached to the container body 2 so as to surround the side surface 2a of the container body 2. The band portion 4b is configured to come into contact with the top surface 3a of the lid 3 to prevent the lid from coming off.

In the container 1 having such a configuration, when the container 1 is transported, the lid 3 can be removed by keeping the band portion 4b in contact with the top surface 3a of the lid 3, as shown in FIGS. 1 and 7. is suppressed. Furthermore, when taking out the contents from the container 1, as shown in FIG. 8, the lid 3 can be easily removed by shifting the position of the band 4b so that the band 4b does not come into contact with the top surface 3a. Therefore, the lid 3 can be removed and the contents can be taken out quickly. After taking out the contents, the lid 3 is reattached and the band portion 4b is returned to its original position, thereby preventing the lid 3 from coming off. Even when the position of the band portion 4b is shifted, the annular portion 4a remains attached to the container body 2, so that the holding member 4 is prevented from being lost.

The annular portion 4a and the band portion 4b (preferably the entire holding member 4) are preferably made of rubber (preferably silicone rubber). When the annular portion 4a is made of rubber, the annular portion 4a can be easily attached to and removed from the side surface 2a by elastically expanding the diameter of the annular portion 4a. This makes it possible to easily attach and detach the holding member 4 to and from the container body 2, making it easier to clean the holding member 4 and the container body 2.

Further, in a state where the annular portion 4a is attached to the side surface 2a, it is preferable that the annular portion 4a is in a state in which the diameter is expanded compared to the original shape (the shape in a state where no external force is applied). This generates a contractile force in the annular portion 4a, and the annular portion 4a tightens the side surface 2a, thereby stably holding the annular portion 4a on the side surface 2a.

When the band portion 4b is made of rubber, it becomes easy to shift the position of the band portion 4b by elastically stretching the band portion 4b. Further, when the band portion 4b presses the lid 3 against the container body 2 while the band portion 4b is in contact with the upper surface 3a of the lid 3, the lid 3 is particularly prevented from coming off. For this reason, it is preferable that the band part 4b is in a state where it is stretched out from its original shape in a state where the band part 4b is brought into contact with the upper surface 3a of the lid 3. As a result, a contraction force is generated in the band portion 4b, and the lid 3 is pressed against the container body 2.

It is preferable that the band portion 4b is provided with a gripping piece 4c that protrudes from the band portion 4b. This makes it easy to shift the position of the band portion 4b by pinching the gripping piece 4c with your fingers. It is preferable that the gripping piece 4c protrudes in a direction perpendicular to the main surface of the band portion 4b. Moreover, it is preferable that the gripping piece 4c is provided with an uneven shape that facilitates gripping of the gripping piece 4c. In this embodiment, the uneven shape is formed by through holes 4d. It is preferable that the gripping piece 4c is provided at the center of the band portion 4b in the longitudinal direction. Further, the gripping piece 4c is preferably provided at the center of the band portion 4b in the width direction (direction perpendicular to the longitudinal direction).

It is preferable that the band portion 4b includes a central portion 4b1 and a pair of connecting portions 4b2. The central portion four b1 is arranged between the pair of connecting portions four b2. Further, the central portion 4b1 and the annular portion 4a are connected by the connecting portion 4b2. The center portion 4b1 is a portion that comes into contact with the upper surface 3a of the lid 3, and preferably has a shape that conforms to the upper surface 3a. The connecting portion 4b2 is arranged along the side surfaces of the container body 2 and the lid 3. It is preferable that the gripping piece 4c is provided in the central portion 4b1. It is preferable that a bent portion 4b3 is provided between the central portion 4b1 and the connecting portion 4b2. The bending portion 4b3 has a radius of curvature smaller than either the central portion 4b1 or the connecting portion 4b2. When the radius of curvature of the bent portion 4b3 is R1 and the radius of curvature of the central portion 4b1 is R2, R2/R1 is preferably 5 or more, and more preferably 15 or more. R2/R1 is, for example, 5 to 100, specifically, for example, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, It may be within the range between any two of the numerical values exemplified here.

It is preferable that the width of the connecting portion 4b2 gradually increases toward the center portion 4b1. This narrows the width at the base of the connecting portion 4b2, making it easier to shift the position of the central portion 4b1. If the width at the narrowest part of the connecting portion 4b2 is W1, and the width at the center in the longitudinal direction of the central portion 4b1 is W2, then W2/W1 is, for example, 1.0 to 3.0, and 1 .2 to 1.8 is preferred. Specifically, this value is, for example, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 2.0, 2.5, 3.0, and may be within the range between any two of the numerical values exemplified here.

As shown in FIG. 3, if the part of the container body 2 where the annular part 4a is attached is the attachment part 2c, the container body 2 is located at a position adjacent to the open end 2d side of the container body 2 than the attachment part 2c. It is preferable to include a locking portion 2e. It is preferable that the locking portion 2e is constituted by an annular convex portion. The locking portion 2e prevents the annular portion 4a from moving toward the open end 2d, thereby preventing the annular portion 4a from unintentionally coming off the open end 2d. It is preferable that the container main body 2 has an enlarged diameter portion 2g that increases in diameter from the mounting portion 2c toward the bottom portion 2f. This prevents the annular portion 4a from moving toward the bottom portion 2f while the band portion 4b is not in contact with the top surface 3a of the lid 3. It is preferable that a straight body part 2h whose outer diameter does not change toward the bottom part 2f is provided closer to the bottom part 2f than the enlarged diameter part 2g.

As shown in FIG. 4, the lid 3 is preferably of a plug type, that is, preferably includes an insertion portion 3b inserted into the container body 2. Preferably, there is no screw in the fitting portion between the lid 3 and the container body 2. It is preferable that an annular packing 5 is attached to the insertion portion 3b. As shown in FIG. 6, when the insertion portion 3b is inserted into the container body 2, the annular packing 5 preferably comes into contact with the inner surface of the container body 2. This makes it possible to seal the inside of the container body 2. The annular packing 5 is preferably provided in an annular groove 3c provided in the insertion portion 3b. This places the annular packing 5 in an appropriate position. The inner surface of the container body 2 is preferably a smooth surface with no steps. This makes it easier to insert the insertion portion 3b and to clean the inside of the container body 2.

It is preferable that the annular packing 5 includes an annular base 5a and an annular convex portion 5b projecting radially outward from the annular base 5a. It is preferable that the annular convex portion 5b is tapered. Further, as shown in FIG. 6, when the lid 3 is attached to the container body 2, the annular convex portion 5b is in contact with the inner surface of the container body 2, and the annular base 5a is not in contact with the inner surface of the container body 2. It is preferable that the configuration is as follows. In this case, only the annular convex portion 5b, which is relatively easily deformed, comes into contact with the inner surface of the container body 2, thereby reducing the resistance force when inserting the insertion portion 3b.

If the width at the root of the annular protrusion 5b (length in the vertical direction) is T1, and the radius of curvature at the tip of the annular protrusion 5b is R3, then R3/T1 is preferably 0.2 or less, and 0.1 or less. is even more preferable. Specifically, this value is, for example, 0, 0.01, 0.05, 0.1, 0.15, 0.2, and is within the range between any two of the numerical values exemplified here. It's okay. It is preferable that the tip of the annular convex portion 5b be sharp. The cross section of the annular convex portion 5b is preferably triangular (preferably acute triangular) whose tip may be rounded. Assuming that the height (radial length) of the annular convex portion 5b is H1, H1/T1 is preferably 1.0 or more, and more preferably 1.2 or more. This value is, for example, 1.0 to 3.0, and specifically, for example, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1 .7, 1.8, 1.9, 2.0, 2.5, and 3.0, and may be within a range between any two of the numerical values exemplified here or more than any one. The angle of the tip of the triangle is preferably 60 degrees or less, more preferably 45 degrees or less. This angle is, for example, 10 to 60 degrees, specifically, for example, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60 degrees, and the numerical values illustrated here are It may be within the range between any two. In such a configuration, the vicinity of the tip of the annular convex portion 5b is more likely to deform. It is preferable that a plurality of annular protrusions 5b (two in this embodiment) are provided spaced apart in the vertical direction. This further improves the sealing performance of the container body 2.

The annular packing 5 is preferably made of rubber (preferably silicone rubber). When the annular packing 5 is made of rubber, the annular packing 5 can be easily attached to and removed from the insertion portion 3b by elastically expanding the diameter of the annular packing 5. This allows the annular packing 5 to be easily attached to and removed from the insertion portion 3b, making it easier to clean the lid 3 and the annular packing 5.

Preferably, the lid 3 includes a base portion 3d. The base portion 3d is not inserted into the container body 2. The upper surface 3a is provided on the base portion 3d. The insertion portion 3b is provided so as to protrude from the lower surface 3e of the base portion 3d. When the insertion portion 3b is inserted into the container body 2, the lower surface 3e of the base portion 3d comes into contact with the open end 2d, thereby positioning the lid 3 in the vertical direction with respect to the container body 2.

It is preferable that an annular convex portion 3f is provided on the outer peripheral surface of the base portion 3d. This makes it easier to grasp the base portion 3d and lift the lid 3. Assuming that the width at the root of the annular convex portion 3f (length in the vertical direction) is T2, and the radius of curvature at the tip of the annular convex portion 3f is R4, R4/T2 is preferably 0.3 or more, and 0.4 or more. is even more preferable. This value is, for example, 0.3 to 1.0, and specifically, for example, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1 .0, and may be within a range between any two of the numerical values exemplified here or more than any one. Assuming that the height (radial length) of the annular convex portion 5b is H2, H2/T2 is preferably 0.5 or less, more preferably 0.3 or less. This value is, for example, 0.05 to 0.5, and specifically, for example, 0.05, 0.10, 0.15, 0.20, 0.25, 0.30, 0.35, 0 .40, 0.45, and 0.50, and may be within the range between any two of the numerical values exemplified here or below any of them. With such a shape, the base portion 3d is particularly easy to grip. It is preferable that a plurality of annular protrusions 3f (two in this embodiment) are provided spaced apart in the vertical direction. This makes it easier to grip the base portion 3d.

The outer diameter of the base portion 3d is, for example, 15 to 100 mm, preferably 15 to 50 mm. Specifically, this outer diameter is, for example, 15, 20, 25, 30, 35, 40, 50, or 100 mm, and may be within a range between any two of the numerical values exemplified here. The upper surface 3a of the base portion 3d may be flat, but preferably has an upwardly convex curved shape. In this case, the lid 3 is easily pressed against the container body 2 by the band portion 4b. Assuming that the outer diameter of the base portion 3d is D1 and the radius of curvature of the upper surface 3a is R5, R5/D1 is, for example, from 1 to 10, preferably from 2 to 5. Specifically, this value is, for example, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 6.0, 7.0, 8.0, 9.0, and 10.0, and may be within the range between any two of the numerical values exemplified here, or may be greater than or less than any of them.

The wall thickness of the container body 2 is, for example, 1 to 3 mm, preferably 1.5 to 2.5 mm. The container body 2 can be formed by blow molding, injection molding, or the like. Blow molding may be direct blow molding using a molten parison, or biaxial stretch blow molding using a preform. In one example, a container body 2 of 200 mL or less is formed by injection molding, and a larger container body 2 is formed by biaxial stretch blow molding using the injection molded container body 2 as a preform. can do. The container body 2 is preferably made of thermoplastic resin. The thermoplastic resin is not particularly limited, but an amorphous thermoplastic resin is preferable, and a sulfone resin having a sulfone group such as polyethersulfone (PESU), polysulfone (PSU), or polyphenylsulfone (PPSU) is more preferable. This is because such materials have particularly excellent heat resistance. The glass transition temperature (Tg) of the resin constituting the container body 2 is, for example, 170 to 250°C, preferably 180 to 230°C. Specifically, Tg is, for example, 170, 175, 180, 185, 190, 195, 200, 205, 210, 215, 220, 225, 230, 235, 240, 245, 250 ° C. It may be within a range between any two values. Tg can be measured at a heating rate of 10° C./min in accordance with ISO11357-1/-2.

The container body 2 is preferably amber in color. Further, it is preferable that the container body 2 is subjected to a bluing treatment to improve the weight, texture, and durability.

In one example, the lid 3 can be formed by joining a first member 3g and a second member 3h. The first member 3g and the second member 3h each have a cylindrical shape with a bottom, and the hollow lid 3 can be formed by joining the first member 3g and the second member 3h. Examples of the joining method include adhesive, fitting, screwing, and welding. The welding method includes ultrasonic welding. The first member 3g and the second member 3h can each be manufactured by injection molding, for example. By manufacturing the lid 3 using such a method, it is possible to reduce the weight of the lid 3 and to suppress the occurrence of sink marks on the lid 3. Moreover, when the lid 3 is not hollow, the lid 3 can be formed from one piece by injection molding. In this embodiment, the first member 3g and the second member 3h correspond to the base portion 3d and the insertion portion 3b, respectively, but they may have different shapes, for example. Furthermore, at least one of the first member 3g and the second member 3h does not have to be cylindrical with a bottom. For example, the first member 3g may have a shape corresponding to the upper surface 3a, and the second member 3h may have a cylindrical shape with a bottom, which is the lid 3 excluding the upper surface 3a.

The lid 3 may be manufactured, for example, by blow molding. In this case, there is an advantage that the hollow lid 3 can be formed from a single member, and there is no need for joining.

It is preferable that the lid 3 is made of thermoplastic resin. The thermoplastic resin is not particularly limited, and may be formed using the same resin as the container body 2, or may be formed using a general-purpose resin such as polyolefin (eg, polyethylene or polypropylene).

2. Second Embodiment A second embodiment of the present invention will be described using FIG. 9. The content of the first embodiment also applies to this embodiment unless it contradicts the spirit thereof. The container body 2 shown in FIG. 9 can be used in combination with the lid 3 and holding member 4 similar to those in the first embodiment.

In this embodiment, the container main body 2 does not increase in diameter from the mounting portion 2c toward the bottom 2f, and has a straight body portion 2h whose outer diameter does not change toward the bottom 2f. Even in this case, it is possible to hold the annular portion 4a in an appropriate position by the tightening by the annular portion 4a and the resulting frictional force.

1 : Container 2 : Container main body 2a : Side surface 2b : Opening 2c : Mounting part 2d : Opening end 2e : Locking part 2f : Bottom part 2g : Expanded diameter part 2h : Straight body part 3 : Lid 3a : Top surface 3b : Insertion part 3c : Annular groove 3d : Base part 3e : Lower surface 3f : Annular convex part 3g : First member 3h : Second member 4 : Holding member 4a : Annular part 4b : Band part 4b1 : Central part 4b2 : Connecting part 4b3 : Bent part 4c : Grip piece 4d : Through hole 5 : Annular packing 5a : Annular base 5b : Annular convex part

Claims (5)

Comprising a container body, a lid, and a holding member,
The lid is configured to be attachable to the container body so as to close an opening of the container body,
The holding member includes an annular portion and a band portion having both ends connected to the annular portion,
The annular portion is attached to the container main body so as to surround a side surface of the container main body,
The container is configured such that the band portion comes into contact with the top surface of the lid to prevent the lid from coming off. The container according to claim 1,
The container, wherein the band portion includes a gripping piece protruding from the band portion. The container according to claim 1,
In the container, the annular portion and the band portion are made of rubber. The container according to claim 1,
The container body includes a locking portion that suppresses movement of the annular portion toward the open end of the container body at a position adjacent to the open end side of the container body rather than a portion to which the annular portion is attached. A container comprising: The container according to any one of claims 1 to 4,
The lid includes an insertion portion inserted into the container body,
An annular packing is attached to the insertion portion,
The annular packing includes an annular base and an annular convex portion protruding radially outward from the annular base,
The annular convex portion is tapered,
The container is configured such that, when the lid is attached to the container body, the annular protrusion comes into contact with the inner surface of the container main body, and the annular base does not come into contact with the inner surface of the container main body.