JP2019038599A - Container with lid - Google Patents

Abstract

To provide a container with a lid which can be open at a large opening angle, and be opened and closed smoothly and securely.SOLUTION: A linear soft portion 4a is formed to connect one end A to the other end B in the width direction of a root of a lid 4 across a middle position C in a smooth linear form. And a three dimensional curve face 5, which can be turned over around the linear soft portion 4a, with its lateral shape flexibly changed from a concave to a convex, is provided between a hinge portion 3 and the root of the lid 4.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a container with a lid for storing food and drink and various materials, and the lid is provided with a self-holding function capable of maintaining an open state and a closed state around a hinge.

The inventor has already proposed a container described in Patent Document 1 as a container with a lid having a self-holding function. That is, as shown in FIG. 15, in the case where the hinge portion 3 of the lid 4 having elasticity is opened as a boundary, the lid 4 changes from an open state indicated by a chain line to a closed state indicated by a solid line.
That is, in the state of the chain line in which the lid 4 is opened, the root is welded to the main body portion 2, and the welded portion forms the hinge portion 3. And when the lid | cover 4 is an open state, an outer surface side becomes a concave curved surface (curvature R1). Next, when the lid 4 is rotated and closed, the concave curved surface changes to a convex curved surface (curvature R2) due to elasticity. This is because the three-dimensional curved surface 5 formed around the base portion of the lid 4 changes from concave to convex by rotating around the lid 4. That is, the lid 4 is deformed from a concave curved surface to a convex curved surface around the hinge, and the closed state is self-held (see Patent Document 1).

Japanese Patent Laying-Open No. 2015-89828

Lidded container described in Patent Document 1, the lid there is a opening angle theta ₁ is relatively small disadvantage when changing from the open state of the chain line in solid line in the closed state. For this reason, when the lid 4 is opened and the contents in the main body 2 are taken in and out, there is a possibility that the object and the lid 4 interfere with each other.
Furthermore, in a container for food or the like, a seal film needs to be adhered and sealed to the flange portion 1 of the opening of the main body portion 2 in order to maintain the quality of the stored items inside. However, the presence of the lid 4 has a drawback that it is difficult to stick the seal film to the flange portion 1.
Therefore, the present invention aims to solve these problems.

The present invention according to claim 1 is a main body (2) of a box-shaped resin container for storing a stored item in an opening, and an outer side in a plane direction of the opening on one side of the main body (2). And a hinge portion (3) formed integrally with the hinge portion (3) and connected to the hinge portion (3) or integrally formed with the hinge portion (3), and a single door around the hinge portion (3). In a lidded container comprising a lid (4) that opens and closes in a shape,
The hinge portion (3) has a linear linear flexible portion (4a) that bends more flexibly in the thickness direction than the other portions of the lid (4),
The linear flexible portion (4a) is connected to one end (A) in the width direction of the base of the lid (4) from the other end (B) in a smooth linear manner via an intermediate position (C), and the intermediate position (C) is located outside the straight line (S) connecting the one end (A) and the other end (B),
With the linear flexible part (4a) as a boundary, a three-dimensional curved surface (5) is provided between the hinge part (3) and the base of the lid (4) that is elastically deformed by reversing and bending from concave to convex in the thickness direction. And
The three-dimensional curved surface (5) has a cross section that crosses the linear flexible portion (4a) in the open state of the lid (4), and is formed as a concave curved surface on the outer surface side of the lid (4). The concave curved surface is formed as a convex curved surface on the outer surface side of the lid (4) due to the elasticity of the hinge portion (3) when rotated from the open to the closed direction by a certain amount or more, and the closed state is self-held. It is a container with a lid.

According to the second aspect of the present invention, the end portion is connected or fitted to one side of the main body portion (2) of the resin container for storing the contents in the opening and the main body portion (2) of the resin container. And a lid (4) having a hinge part (3) at its end and opening and closing in a single door shape around the hinge part (3).
The hinge portion (3) has a linear linear flexible portion (4a) that bends more flexibly in the thickness direction than the other portions of the lid (4),
The linear flexible portion (4a) is connected to one end (A) in the width direction of the base of the lid (4) from the other end (B) in a smooth linear manner via an intermediate position (C), and the intermediate position (C) is located outside the straight line (S) connecting the one end (A) and the other end (B),
With the linear flexible part (4a) as a boundary, a three-dimensional curved surface (5) is provided between the hinge part (3) and the base of the lid (4) that is elastically deformed by reversing and bending from concave to convex in the thickness direction. And
The three-dimensional curved surface (5) has a cross section that crosses the linear flexible portion (4a) in the open state of the lid (4), and is formed as a concave curved surface on the outer surface side of the lid (4). The concave curved surface is formed as a convex curved surface on the outer surface side of the lid (4) due to the elasticity of the hinge portion (3) when rotated from the open to the closed direction by a certain amount or more, and the closed state is self-held. It is a container with a lid.

The present invention according to claim 3 is the lidded container according to claim 1, wherein the linear flexible portion (4 a) is formed in a narrow linear shape that is thinner than the hinge portion (3). .
According to a fourth aspect of the present invention, in the linear flexible portion (4a), the intermediate position (C) is located on the main body portion (2) side of the container. Container.

The present invention described in claim 5 is the lidded container according to claim 1 or 2, wherein the linear flexible portion (4a) has an intermediate position (C) located on the lid (4) side. .
The present invention according to claim 6 is the lidded container according to any one of claims 1 to 5, wherein the plane of the three-dimensional curved surface (5) is formed in a flat leaf shape.

In the present invention, the body 4 of the container is provided with a lid 4 via the hinge 3.
The hinge portion 3 has a linear linear flexible portion 4a that bends more flexibly in the thickness direction than other portions,
The linear flexible portion 4a is connected to one end A in the width direction of the base of the lid 4 from the other end B in a smooth linear manner via an intermediate position C. The intermediate position C is connected to the one end A and the other end B. Is located outside the straight line S connecting the two.
Then, a three-dimensional curved surface 5 is provided between the hinge portion 3 and the base of the lid 4 with the linear flexible portion 4a as a boundary.
As a result, the linear linear flexible portion 4a is curved with the one end A, the intermediate position C, and the other end B passing smoothly in order, and from the concave to the convex with the curved linear flexible portion 4a as a boundary. Since the inverted three-dimensional curved surface 5 is formed, the opening angle θ ₂ (FIG. 10) before and after the lid is inverted is increased. In other words, since the lid is reversed with the flexible linear flexible portion 4a as a boundary, the lid can be opened and closed greatly, and the opening operation can be smoothly and reliably performed. This is because the curved linear flexible part 4a effectively assists the operation of reversing the entire three-dimensional curved surface without waste with the curved line as a boundary.
As a result, as shown in FIG. 10, the opening angle θ ₂ of the lid 4 of the present invention is larger than the opening angle θ ₁ of the conventional lid 4 of FIG. 15 (θ ₁ <θ ₂ ).

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a state of a container with a lid according to a first embodiment of the present invention with its lid 4 opened. The semi-sectional perspective view and partial enlarged view of the Example. The perspective view which shows the obstruction | occlusion state of the lid | cover 4 of the 1st Example. The half cross-sectional perspective view and partial enlarged view. It is a container with a lid of the 2nd example of the present invention, and is the perspective view showing the state where the lid 4 was opened. The half sectional view and partial enlarged view of the second embodiment. The perspective view which shows the obstruction | occlusion state of the cover 4. FIG. The half cross-sectional perspective view and partial enlarged view. The perspective view of the container with a lid | cover of 3rd Example of this invention. Explanatory drawing explaining the inversion state of the three-dimensional curved surface 5 at the time of opening and closing of the container with a lid | cover of this invention. The perspective view of the container with a lid | cover of 4th Example of this invention, and opening / closing explanatory drawing of a lid | cover. The disassembled perspective view of the container with a lid | cover of 5th Example of this invention. The half cross-sectional perspective view and partial enlarged view. The opening and closing explanatory view and a partially enlarged view. Explanatory drawing of the open / closed state of the container with a conventional lid | cover.

Next, embodiments of the present invention will be described with reference to the drawings.
1 to 4 show a lidded container according to a first embodiment of the present invention, and FIG. 1 is an explanatory view showing an open state of the lid 4. 2 is a half sectional perspective view (A) on the center line L of the lidded container in FIG. 1 and a partially enlarged view of FIG. 2 (A).
In this example, a hinge portion 3 is extended on one side of a main body portion 2 having a storage portion therein, and a lid 4 is integrally connected to the hinge portion 3. A flange portion 1 is formed on the upper edge of the main body portion 2. A relatively shallow seat portion 6 is formed outside the flange portion 1, and a hinge portion 3 is provided on the extension of the seat portion 6. And the lid | cover 4 is formed so that the periphery may align with the seating part 6 of the main-body part 2 when it is closed (FIG. 3).

Next, the hinge part 3 is provided with the linear flexible part 4a.
The linear flexible portion 4a is formed with a smooth curve. The intermediate position C is an intermediate position of a straight line S connecting one end A and the other end B, which are both ends of the hinge portion 3, and is located on the main body side outside the straight line S. And the linear flexible part 4a is formed in the shallow arc shape which connects one end A, the intermediate position C, and the other end B smoothly. The linear flexible portion 4 a is formed so as to be thinner than the thickness of the hinge portion 3. A three-dimensional curved surface 5 is formed between the linear flexible portion 4a and the root of the lid 4.
The three-dimensional curved surface 5 is concave on the outer surface side of the lid 4 in the open state of FIGS. 1 and 2. The three-dimensional curved surface 5 is a portion surrounded by a linear flexible portion 4 a and a boundary line F of a one-dot chain line described at the base of the lid 4. The part outside the range does not change. Since the three-dimensional curved surface 5 is formed with the linear flexible portion 4 a as a boundary, the curved surface is flexibly inverted and bent in the thickness direction of the lid 4.

Next, when the lid 4 is closed at the upper end of the main body 2, the three-dimensional curved surface 5 that continues to the linear flexible portion 4 a suddenly changes from a concave state to a convex shape outward. This is because the expansion and contraction of the external force applied linearly to a general coil spring occurs on a three-dimensional curved surface (as a three-dimensional leaf spring) in the present invention. Before and after the change, the presence of the linear flexible portion 4a causes the three-dimensional curved surface 5 to change smoothly and clearly from the concave outward to the convex outward. If the linear flexible part 4a does not exist, the switching operation from the concave to the convex of the three-dimensional curved surface 5 requires a larger external force.
Furthermore, the presence of linear flexible portion 4a, three-dimensional curved surface 5 when changing from concave to convex, the angle theta ₂ of the opening to be closed from the open lid 4 is increased.

FIG. 10 is an explanatory diagram for explaining this.
That is, when the user moves to the solid line state of the lid 4 of the chain line from (open) state (closed), opening angle theta ₂ before and after the variation is larger than the opening angle theta ₁ of the conventional 10 and smoothly.
In FIG. 10 of the present invention, the linear flexible portion 4a is on a curve connecting the other end B and the intermediate position C, and its shape is curved on a horizontal plane as shown in FIG. And the three-dimensional curved surface 5 exists by making the linear flexible part 4a which curves into a boundary (range enclosed by the linear flexible part 4a boundary line F). In the figure, a point D indicates the same point as the point D in FIG.
In contrast, in the conventional container with a lid of, as shown in FIG. 15, since the linear flexible portion 4a does not exist, before and after the opening and closing of the lid 4, than the opening angle theta ₂ in the case of FIG. 10, a small opening It becomes an angle θ _1.

Next, FIGS. 5 to 8 show a second embodiment of the present invention. This embodiment differs from the case of FIG. 1 in that the linear flexible portion of the hinge portion 3 formed on the side portion of the main body portion 2. As shown in FIG. 5, 4 a is curved on the side of the lid 4 from the straight line S connecting one end A and the other end B of the hinge portion 3.
On the other hand, in the example of FIG. 1, the linear flexible portion 4 a is curved toward the body portion 2 side of the straight line S connecting the one end A and the other end B.
Also in this example, the three-dimensional curved surface 5 is formed in a crescent shape, a plane, or a leaf-shaped range surrounded by the boundary line F of the linear flexible part 4a and the one-dot chain line. When the cover 4 is recessed outside the cover 4 and the cover 4 is closed, the three-dimensional curved surface 5 is protruded outside the cover 4.
According to the experiment, the embodiment of FIG. 5 performed the opening / closing operation more smoothly than the embodiment of FIG. 1 and held the closed state stronger.

Next, FIG. 9 shows a third embodiment of the present invention, and this embodiment is different from the embodiment of FIG. 1 in that the positions of the lid 4 and the main body 2 are interchanged. Its actions and effects remain the same.
Next, FIG. 11 is a perspective view of a container with a lid according to a fourth embodiment of the present invention, and an opening / closing explanatory view of the lid 4. In this container, the lid 4 and the main body 2 are manufactured separately and connected by welding or the like at a part of the opening edge of the main body 2. The linear flexible portion 4 a is formed in an arc shape at the opening edge of the main body portion 2.

12 to 14 show a container with a lid according to a fifth embodiment of the present invention, in which the lid 4 and the main body 2 are detachably connected, or the lid 4 is an edge of the main body 2 of the container. They are connected by welding or the like.
In this example, as shown in FIG. 12, an elongated connection portion 7 is integrally projected on one edge portion of the lid 4 via a three-dimensional curved surface 5. And the linear flexible part 4a is formed in the edge of the tertiary limit curved surface 5 of the cover 4. As shown in FIG. The main body 2 has an elongated box-like fitting portion 8 that is aligned with the connection portion of the lid 4 and is integrally formed on one edge thereof. The main body 2 and the lid 4 may be detachably connected or may be welded between their edges. Moreover, FIG. 14 is explanatory drawing which shows the effect | action.
The operations of the fourth and fifth embodiments are also substantially the same as those of the previous embodiments.

DESCRIPTION OF SYMBOLS 1 Flange part 2 Main body part 3 Hinge part 4 Cover 4a Linear flexible part 5 Three-dimensional curved surface 6 Seating part 7 Connection part 8 Insertion part

A one end B other end C intermediate position D point F boundary line S straight line L center line θ ₁ opening angle θ ₂ opening angle R1 curvature R2 curvature

Claims (6)

A main body (2) of a box-shaped resin container for storing the contents in the opening, and a hinge integrally formed on one side of the main body (2) on the outer side in the plane direction of the opening A lid (4) connected to the hinge portion (3) or integrally formed with the hinge portion (3) and opening and closing in a single door shape around the hinge portion (3); In a lidded container comprising
The hinge portion (3) has a linear linear flexible portion (4a) that bends more flexibly in the thickness direction than the other portions of the lid (4),
The linear flexible portion (4a) is connected to one end (A) in the width direction of the base of the lid (4) from the other end (B) in a smooth linear manner via an intermediate position (C), and the intermediate position (C) is located outside the straight line (S) connecting the one end (A) and the other end (B),
With the linear flexible part (4a) as a boundary, a three-dimensional curved surface (5) is provided between the hinge part (3) and the base of the lid (4) that is elastically deformed by reversing and bending from concave to convex in the thickness direction. And
The three-dimensional curved surface (5) has a cross section that crosses the linear flexible portion (4a) in the open state of the lid (4), and is formed as a concave curved surface on the outer surface side of the lid (4). The concave curved surface is formed as a convex curved surface on the outer surface side of the lid (4) due to the elasticity of the hinge portion (3) when rotated from the open to the closed direction by a certain amount or more, and the closed state is self-held. A container with a lid. An end is connected or fitted to one side of the main body (2) of the resin container for storing the contents in the opening and the main body (2) of the resin container, and a hinge portion is connected to the end. (3), and a lid (4) that opens and closes around the hinge portion (3) in a single door shape,
The hinge portion (3) has a linear linear flexible portion (4a) that bends more flexibly in the thickness direction than the other portions of the lid (4),
The linear flexible portion (4a) is connected to one end (A) in the width direction of the base of the lid (4) from the other end (B) in a smooth linear manner via an intermediate position (C), and the intermediate position (C) is located outside the straight line (S) connecting the one end (A) and the other end (B),
With the linear flexible part (4a) as a boundary, a three-dimensional curved surface (5) is provided between the hinge part (3) and the base of the lid (4) that is elastically deformed by reversing and bending from concave to convex in the thickness direction. And
The three-dimensional curved surface (5) has a cross section that crosses the linear flexible portion (4a) in the open state of the lid (4), and is formed as a concave curved surface on the outer surface side of the lid (4). The concave curved surface is formed as a convex curved surface on the outer surface side of the lid (4) due to the elasticity of the hinge portion (3) when rotated from the open to the closed direction by a certain amount or more, and the closed state is self-held. A container with a lid.   The said linear flexible part (4a) is a container with a lid | cover of Claim 1 formed in the linear form thinner than the thickness of a hinge part (3), and a narrow width | variety.   The said linear flexible part (4a) is a container with a lid | cover of Claim 1 or Claim 2 in which the intermediate position (C) is located in the main-body part (2) side of a container.   The said linear flexible part (4a) is a container with a lid | cover of Claim 1 or Claim 2 in which the intermediate position (C) is located in the lid | cover (4) side.   The container with a lid according to claims 1 to 5, wherein the plane of the three-dimensional curved surface (5) is formed in a leaf shape of a flat tree.

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