JP6807106B2 - Container with lid - Google Patents

Description

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

The present inventor has already proposed the container described in Patent Document 1 below as a container with a lid having a self-holding function. That is, as shown in FIG. 15, in the one that opens on one side with the hinge portion 3 of the elastic lid 4 as a boundary, the lid 4 changes from the open state shown by the chain line to the closed state shown by the solid line.
That is, in the state of the chain wire with the lid 4 open, the root thereof is welded to the main body portion 2, and the welded portion forms the hinge portion 3. When the lid 4 is open, the outer surface side has 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 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 its closed state is self-held (see Patent Document 1).

Japanese Unexamined Patent Publication No. 2015-89828

The container with a lid described in Patent Document 1 has a drawback that the opening / closing angle θ ₁ when the lid changes from the open state of the chain line to the closed state of the solid line is relatively small. Therefore, when the lid 4 is opened and the contained object in the main body 2 is taken in and out, the object and the lid 4 may interfere with each other.
Further, in a container such as food, in order to maintain the quality of the stored items inside, it is necessary to attach a seal film to the flange portion 1 of the opening of the main body portion 2 to seal the container. However, there is a drawback that it is difficult to attach the seal film to the flange portion 1 due to the presence of the lid 4.
Therefore, it is an object of the present invention to solve these problems.

According to the first aspect of the present invention, there is a main body (2) of a box-shaped resin container for storing stored items in the opening, and one side of the main body (2), which is outside the opening in the plane direction. In addition, a hinge portion (3) is integrally formed so as to be connected to the hinge portion (3), or is integrally formed with the hinge portion (3), and a single door is formed around the hinge portion (3). In a container with a lid provided with a lid (4) that opens and closes in a shape
The hinge portion (3) has a linear linear flexible portion (4a) that flexes flexibly in the thickness direction as compared with other portions of the lid (4).
The linear flexible portion (4a) is smoothly linearly connected from one end (A) to the other end (B) of the base of the lid (4) in the width direction via an intermediate position (C). (C) is located outside the straight line (S) connecting the one end (A) and the other end (B).
A three-dimensional curved surface (5) that elastically deforms by reversing and bending from concave to convex in the thickness direction is provided between the hinge portion (3) and the base of the lid (4) with the linear flexible portion (4a) as a boundary. Be,
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). When rotated from the open to the closed direction by a certain amount or more, the concave curved surface becomes a convex curved surface on the outer surface side of the lid (4) due to the elasticity of the hinge portion (3), and is formed so as to self-hold the closed state. It is a container with a lid.

According to the second aspect of the present invention, an end portion is connected or fitted to one side of a main body portion (2) of a resin container for storing a stored object in an opening and a main body portion (2) of the resin container. In a container with a lid, which has a hinge portion (3) at its end and a lid (4) that opens and closes in a single door shape around the hinge portion (3).
The hinge portion (3) has a linear linear flexible portion (4a) that flexes flexibly in the thickness direction as compared with other portions of the lid (4).
The linear flexible portion (4a) is smoothly linearly connected from one end (A) to the other end (B) of the base of the lid (4) in the width direction via an intermediate position (C). (C) is located outside the straight line (S) connecting the one end (A) and the other end (B).
A three-dimensional curved surface (5) that elastically deforms by reversing and bending from concave to convex in the thickness direction is provided between the hinge portion (3) and the base of the lid (4) with the linear flexible portion (4a) as a boundary. Be,
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). When rotated from the open to the closed direction by a certain amount or more, the concave curved surface becomes a convex curved surface on the outer surface side of the lid (4) due to the elasticity of the hinge portion (3), and is formed so as to self-hold the closed state. It is a container with a lid.

According to the third aspect of the present invention, the linear flexible portion (4a) is a container with a lid according to the first aspect, which is formed in a linear shape having a width thinner than the thickness of the hinge portion (3). ..
According to the fourth aspect of the present invention, the linear flexible portion (4a) has a lid according to claim 1 or 2, wherein the intermediate position (C) is located on the main body portion (2) side of the container. It is a container.

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

In the present invention, the main body 2 of the container is provided with the lid 4 via the hinge 3.
The hinge portion 3 has a linear linear flexible portion 4a that flexes flexibly in the thickness direction as compared with other portions.
The linear flexible portion 4a is smoothly linearly connected from one end A in the width direction of the base of the lid 4 to the other end B via an intermediate position C, and the intermediate position C is the one end A and the other end B. It is located outside the straight line S connecting the above.
A three-dimensional curved surface 5 is provided between the hinge portion 3 and the base of the lid 4 so as to be elastically deformed by reversing and bending from concave to convex in the thickness direction with the linear flexible portion 4a as a boundary.
As a result, in the linear flexible portion 4a, one end A, the intermediate position C, and the other end B that smoothly pass in order are curved as a whole, and the curved linear flexible portion 4a is defined as a boundary from concave to convex. Since the inverted three-dimensional curved surface 5 is formed, the opening angle θ ₂ (FIG. 10) before and after the inversion of the lid becomes large. That is, since the lid is inverted with the flexible linear flexible portion 4a as a boundary, there is an effect that the lid can be opened and closed widely and the opening operation can be smoothly and surely performed. This is because the curved linear flexible portion 4a effectively assists the reversing operation of the entire three-dimensional curved surface without waste at the curved line.
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 ).

A perspective view showing a container with a lid according to the first embodiment of the present invention, in which the lid 4 is opened. A half-section perspective view and a partially enlarged view of the same embodiment. The perspective view which shows the closed state of the lid 4 of the 1st Example. The same half-section perspective view and partially enlarged view. A perspective view showing a container with a lid according to a second embodiment of the present invention, in which the lid 4 is opened. A half cross-sectional view and a partially enlarged view of the second embodiment. The perspective view which shows the closed state of the lid 4. The same half-section perspective view and partially enlarged view. The perspective view of the container with a lid of 3rd Example of this invention. The explanatory view explaining the inverted state of the three-dimensional curved surface 5 at the time of opening and closing the container with a lid of this invention. A perspective view of a container with a lid and an explanatory view of opening and closing the lid according to a fourth embodiment of the present invention. An exploded perspective view of a container with a lid according to a fifth embodiment of the present invention. The same half-section perspective view and partially enlarged view. The opening / closing explanatory view and the partially enlarged view. Explanatory drawing of the open and closed state of the conventional container with a lid.

Next, an embodiment of the present invention will be described with reference to the drawings.
1 to 4 are a container with a lid according to the 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-section perspective view (A) of the container with a lid on the center line L in FIG. 1 and a partially enlarged view of FIG. 2 (A).
In this example, the hinge portion 3 is extended to one side of the main body portion 2 having the storage portion inside, and the 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 seating portion 6 is formed on the outside of the flange portion 1, and a hinge portion 3 is provided on an extension of the seating portion 6. The lid 4 is formed so that its peripheral edge aligns with the seating portion 6 of the main body portion 2 when it is closed (FIG. 3).

Next, the hinge portion 3 is provided with a linear flexible portion 4a.
The linear flexible portion 4a is formed by 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. The linear flexible portion 4a is formed in a shallow arc shape that smoothly connects one end A, the intermediate position C, and the other end B. The linear flexible portion 4a 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 base 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 the linear flexible portion 4a and the boundary line F of the alternate long and short dash line described at the base of the lid 4. The part outside that range does not change. Since the three-dimensional curved surface 5 is formed on the linear flexible portion 4a as a boundary, the curved surface flexibly reverses and bends in the thickness direction of the lid 4.

Next, when the lid 4 closes the upper end of the main body 2, the three-dimensional curved surface 5 continuous with the linear flexible portion 4a suddenly changes from a concave state to an outwardly convex state. This is because the expansion and contraction operation of the external force linearly applied to the general coil spring occurs on the 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 smoothly and clearly change from concave outward to convex outward. If the linear flexible portion 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.
Further, due to the presence of the linear flexible portion 4a, when the three-dimensional curved surface 5 changes from concave to convex, the opening / closing angle θ ₂ from the opening to the closing of the lid 4 becomes large.

FIG. 10 is an explanatory diagram illustrating this.
That is, when the lid 4 moves from the solid line state (open) to the chain line state (closed), the opening angle θ ₂ before and after the change is larger and smoother than the opening angle θ ₁ in the conventional FIG.
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. Then, a three-dimensional curved surface 5 exists with the curved linear flexible portion 4a as a boundary (the range surrounded by the linear flexible portion 4a boundary line F). In the figure, the point D indicates the same point as the point D in FIG. 2, and is a position on the half cross section (L in FIG. 1 on the center line).
On the other hand, in the conventional container with a lid, as shown in FIG. 15, since the linear flexible portion 4a does not exist, the opening before and after the opening and closing of the lid 4 is smaller than the opening angle θ _{2 in} the case of FIG. The angle θ is ₁ .

Next, FIGS. 5 to 8 are the second embodiment of the present invention, and the difference from the case of FIG. 1 is 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, 4a is curved on the lid 4 side of 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 4a is curved toward the main body portion 2 side of the straight line S connecting one end A and the other end B.
Also in this example, the three-dimensional curved surface 5 is formed in a crescent-shaped or flat surface or leaf-shaped range surrounded by the linear flexible portion 4a and the boundary line F of the alternate long and short dash line, and the three-dimensional curved surface 5 is formed in the open state of the lid 4. When the lid 4 is closed to the outside of the lid 4, the three-dimensional curved surface 5 is convex to the outside of the lid 4.
According to the experiment, the example of FIG. 5 performed the opening / closing operation more smoothly and held the closed state more strongly than the example of FIG.

Next, FIG. 9 is a third embodiment of the present invention, and the difference between this example and the embodiment of FIG. 1 is that the positions of the lid 4 and the main body 2 are interchanged. Its action and effect do not change.
Next, FIG. 11 is a perspective view of a container with a lid according to a fourth embodiment of the present invention, and an explanatory view of opening and closing the lid 4. In this container, the lid 4 and the main body 2 are manufactured separately, and are connected by welding or the like at a part of the opening edge of the main body 2. The linear flexible portion 4a is formed in an arc shape on the opening edge of the main body portion 2.

Next, FIGS. 12 to 14 are containers 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 at the edge of the main body 2 of the container. It is connected by welding or the like.
In this example, as shown in FIG. 12, an elongated connecting portion 7 is integrally projected on one edge of the lid 4 via a three-dimensional curved surface 5. Then, a linear flexible portion 4a is formed on the edge of the tertiary limit curved surface 5 of the lid 4. The main body 2 has an elongated box-shaped fitting portion 8 aligned with the connection portion of the lid 4 integrally formed on one edge thereof. The main body 2 and the lid 4 may be detachably connected or may be welded between the edges of the two. Further, FIG. 14 is an explanatory diagram showing the operation.
The actions of the fourth and fifth examples are also substantially the same as those of the respective examples.

1 Flange part 2 Main body part 3 Hinge part 4 Lid 4a Linear flexible part 5 Three-dimensional curved surface 6 Seating part 7 Connection part 8 Fitting part

A One end B The 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 hinge formed integrally on one side of the main body (2) of a box-shaped resin container for storing stored items in the opening and the main body (2) on the outside 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 opened and closed in a single door shape around the hinge portion (3). In a container with a lid
The hinge portion (3) has a linear linear flexible portion (4a) that flexes flexibly in the thickness direction as compared with other portions of the lid (4).
The linear flexible portion (4a) is smoothly linearly connected from one end (A) to the other end (B) of the base of the lid (4) in the width direction via an intermediate position (C). (C) is located outside the straight line (S) connecting the one end (A) and the other end (B).
A three-dimensional curved surface (5) that elastically deforms by reversing and bending from concave to convex in the thickness direction is provided between the hinge portion (3) and the base of the lid (4) with the linear flexible portion (4a) as a boundary. Be,
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). When rotated from the open to the closed direction by a certain amount or more, the concave curved surface becomes a convex curved surface on the outer surface side of the lid (4) due to the elasticity of the hinge portion (3), and is formed so as to self-hold the closed state. 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 stored items in the opening and the main body (2) of the resin container, and a hinge portion is connected to the end. In a container with a lid having (3) and comprising a lid (4) that opens and closes in a single door shape around the hinge portion (3).
The hinge portion (3) has a linear linear flexible portion (4a) that flexes flexibly in the thickness direction as compared with other portions of the lid (4).
The linear flexible portion (4a) is smoothly linearly connected from one end (A) to the other end (B) of the base of the lid (4) in the width direction via an intermediate position (C). (C) is located outside the straight line (S) connecting the one end (A) and the other end (B).
A three-dimensional curved surface (5) that elastically deforms by reversing and bending from concave to convex in the thickness direction is provided between the hinge portion (3) and the base of the lid (4) with the linear flexible portion (4a) as a boundary. Be,
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). When rotated from the open to the closed direction by a certain amount or more, the concave curved surface becomes a convex curved surface on the outer surface side of the lid (4) due to the elasticity of the hinge portion (3), and is formed so as to self-hold the closed state. A container with a lid. The container with a lid according to claim 1, wherein the linear flexible portion (4a) is thinner than the thickness of the hinge portion (3) and is formed in a narrow linear shape. The container with a lid according to claim 1 or 2, wherein the linear flexible portion (4a) has an intermediate position (C) located on the main body portion (2) side of the container. The container with a lid according to claim 1 or 2, wherein the linear flexible portion (4a) has an intermediate position (C) located on the lid (4) side. The container with a lid 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.

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