TW202404867A - Lid, container with lid, combination of lid and container - Google Patents

Abstract

The cover is formed in a state of being able to cover the opening with respect to the container having the opening and to be joined to the container, and has: a joining area corresponding portion composed of a portion corresponding to an area to be joined to the container; and The cover area corresponding part is formed by the inner part of the joint area corresponding part, and the cover area corresponding part is formed with a convex part, and the convex part has the joint area corresponding part as a base end and reaches the center of the cover area corresponding part, from The opposing surface facing the opening of the container is bulged in a direction opposite to the opposing surface.

Description

Lid, container with lid, combination of lid and container

The present invention relates to a lid, a container with a lid, and a combination of the lid and the container.

It is widely practiced to store drinks, food, etc. (hereinafter also referred to as "contents") in a container with an opening formed at the upper end, and to provide the container with the inside of the container closed by attaching a lid.

As a lid attached to a container, from the viewpoint of reducing environmental load, it is required to use a lid made of paper-based materials. As a method of attaching a lid to a container, Patent Document 1 proposes a method (sealing method) of joining the lid to an edge formed around the outer periphery of the opening at the upper end of the container using a method such as heat sealing. existing technical documents patent documents

Patent Document 1: Japanese Patent Publication No. 2007-530372

For containers and lids, from the perspective of reducing environmental load, the lids are required to be made of paper materials, and the amount of paper materials used (basis weight) is suppressed. If the basis weight is suppressed, the container and lid The rigidity is easily reduced, and the shape is easily deformed when a user holds the container with the lid. When the lid is formed with an opening, deformation may easily occur depending on the container with the lid. In addition, when the lid absorbs moisture such as steam, the container with the lid is likely to be deformed. Therefore, when the lid is formed of a paper material, the lid is opened after forming a container with a lid in which the lid is joined to the container, and when the lid is formed with an opening. Improvements are required to stabilize the shape of containers with lids. When the lid and the container are joined to form an integrated structure, the stress that deforms the container is easily transmitted to the lid, which may affect the ease of ingestion of the contents through the opening of the lid. Therefore, it is especially important to stabilize the shape of the container with the lid. An object of the present invention is to provide a container with a lid in which the lid is joined to the container and the lid is opened after the lid is formed, and to provide a shape of the container with a lid that enables the lid to have an opening. Stabilized cover, container with cover, combination of cover and container, and method of manufacturing the cover.

The present invention is based on the following inventions (1) to (11).

(1) A cover formed in a state in which the opening is covered with respect to a container having an opening and is formed to be joined to the container, have: a joint area corresponding portion consisting of a portion corresponding to the area to be jointed with the aforementioned container; and a cover area corresponding portion composed of an inner portion of the aforementioned joint area corresponding portion, The cover area corresponding portion is formed with a convex portion, which extends from the base end of the joint area corresponding portion to the center of the cover area corresponding portion, from the opposite surface facing the opening portion of the container toward the opening portion of the container. The opposite surface is bulged in the direction of the opposite surface side. (2) According to the cover described in (1) above, The convex portion has an inner wall surface facing the container, and an outer wall surface facing away from the inner wall surface, The outer wall surface has a convex curved surface, and the inner wall surface has a concave curved surface. (3) According to the cover described in (1) above, The convex portion has an inner wall surface facing the container, and an outer wall surface facing away from the inner wall surface, The base end of the inner wall surface is offset from the joint area corresponding part, and the base end of the outer wall surface is located in the joint area corresponding part. (4) The cover according to any one of the above (1) to (3), A penetration portion is formed in the convex portion. (5) According to the cover described in (4) above, The convex part is provided with a weakening part that guides the split position in the convex part, The weakened portion has a plurality of the through portions and at least one continuous portion formed between at least two of the through portions. (6) According to the cover described in (5) above, The weakened portion has a plurality of the through portions formed in a radial shape around the continuous portion. (7) The cover according to any one of the above (1) to (3), The convex part is provided with a weakening part that guides the split position in the convex part, The weakened portion has a half-cut structure. (8) According to the cover described in (4) above, The convex part has: a base part having a small opening; a small lid part opening and closing the small opening part; and a hinge part connecting the base part and the small lid part, and the small opening part has a diameter larger than the opening part of the container. Small opening area, The aforementioned small cover portion is configured to be rotatable relative to the aforementioned base portion with the aforementioned hinge portion as an axis, The boundary position between the outer peripheral edge of the small cover portion and the opening edge of the small opening portion is located inside the convex portion or at the base end of the convex portion, At least a part of the through portion is formed at the boundary position. (9) According to the cover described in (8) above, A gripping portion is provided on the upper surface side of the small cover portion. (10) A container with a lid, which has: The cover described in any one of the above (1) to (9); and the aforementioned container, the aforementioned container having the aforementioned opening formed at an upper end, The lid is joined to the container. (11) A combination of a cover and a container, which has: The cover described in any one of the above (1) to (9); and The container has the opening formed at an upper end. Invention effect

According to the present invention, when the lid is formed of a paper material, the lid is opened after forming a container with the lid joined to the container, and the lid is formed with an opening. The following are a lid that can stabilize the shape of a container with a lid, a container with a lid, a combination of the lid and the container, and a method for manufacturing the lid.

Hereinafter, the cover of the present invention will be described in detail based on the drawings. In addition, the lid of the present invention will be explained by taking a lid used for a container (cup) containing various beverages such as a coffee cup as an example. However, it is not limited to a lid for a container containing beverages. It can be used as a lid of a container for storing foods other than beverages. In addition, the cover of the present invention can be applied to a container that can accommodate various items other than food and drink, such as parts such as bolts and nuts, and items other than the above. Furthermore, the cover body of the present invention will be described below using an example in which the shape of the cover body is circular in plan view. However, the shape of the cover body is not limited to the circular shape in plan view, and can also be applied to polygonal shapes such as elliptical shape, rectangular shape, and triangular shape. , chamfered rectangle, chamfered polygon, etc., and various shapes other than circular shapes.

Hereinafter, the first embodiment, the second embodiment, the third embodiment and application examples of the present invention will be described in order with reference to the drawings. In this specification and the drawings, structures having substantially the same functional structure are denoted by the same drawing symbols, and repeated descriptions will be omitted.

The following descriptions are preferred specific examples of the present invention, and the content of the present invention is not limited to these embodiments and the like. In addition, in the following description, directions such as front and rear, left and right, up and down, and directions on the horizontal plane are shown for convenience of explanation, but the content of the present invention is not limited to these directions. In the examples shown in Figures 1 to 8, the Z-axis direction is the up-down direction (the upper side is the +Z direction, the lower side is the -Z direction), and the X-axis direction is the front-to-back direction (the rear side is the +X direction, and the front side is the -Z direction). X direction), the directions along the X-axis and Y-axis that are orthogonal to each other and defined on the plane with the Z-axis direction as the normal line are the The plane, that is, the XY plane is a horizontal plane, and the explanation will be based on these. The relative size ratios such as the dimensions shown in each of FIGS. 1 to 8 are described for convenience, and the actual size ratios are not limited unless otherwise specified.

[1 First Embodiment] [1-1. Structure] The lid 10 of the first embodiment is formed so as to be able to join the container 501 having the opening 502 in a state of covering the opening 502 . As will be described later using FIGS. 7A and 7B , the lid 10 is formed so as to be joinable to a container 501 having an opening 502 formed at an upper end and an upper edge forming an outer periphery of the opening 502 . Edge 503. 7A and 7B are perspective views and cross-sectional views showing an example of a container 500 with a lid in which the lid 10 shown in FIGS. 1A and 1B is joined to the container 501 . The cover 10 can be joined along the edge 503 for use. In the cover 10 , as shown in FIG. 1A and others, when the cover 10 is viewed from above, the area joined to the edge 503 is called a joining area R. FIG. 1A is a top view showing one embodiment of the cover 10 . Moreover, as the container 501, it is more preferable to use the container which has flexibility in the edge part 503 of the opening part 502. However, these descriptions do not prohibit the container 501 from being a container with little or no flexibility, such as a metal container. In addition, the joining of the cover 10 and the container 501 means the connection between the cover 10 and the container 501 based on adhesion or adhesion.

Among the surfaces of the lid 10 , the surface facing the opening 502 side of the container 501 in the state of the container 500 with the lid is called the opposing surface 73 , and the surface facing away from the opposing surface 73 and exposed to the outside is called the opposite surface 73 . For exposure 72.

In the example of FIG. 1A , the joint region R corresponds to a region formed in a substantially annular shape along the opening 502 of the container 501 in a shape corresponding to the opening 502 of the container 501 (the hatched region in FIG. 1A (also shown in FIGS. 2 to 7 Likewise)). The width of the joint region R (the length of the portion of the straight line extending radially from the center CT of the cover region corresponding portion 50B that intersects the joint region R) is larger than that of the cover 10 in the base end 13 of the convex portion 11 With a thickness of 10 Å, there is a portion extending outward from the base end 13 of the convex portion 11 , and at least a part of this portion forms the bonding region R (forming the bonding region corresponding portion 50A).

The cover 10 is preferably made of paper material.

(paper materials) As the paper material, in addition to a material composed only of pulp, it may also be a material including non-pulp natural fibers, synthetic fibers, recycled fibers and other fibers. However, it is preferable that the pulp contains 50 mass % or more, and more preferably Preferably, it contains 70 mass % or more, It is still more preferable that it contains 80 mass % or more, and it is especially preferable that it consists of 100 mass % of pulp. The paper material can use non-woven fabrics, wood foil and other wood-based materials, and composite materials with raw materials such as aluminum foil can also be used. However, when a composite material is used, the composite material as a whole preferably contains 50% by mass or more of pulp. , it is particularly preferable that the pulp contains 80% by mass or more. The higher the pulp content ratio, the easier it is for the paper material to biodegrade, so it is preferable.

Furthermore, when both the cover and the container are made of paper materials, the fiber density of the cover is preferably higher than the fiber density of the container. The lid is easily formed into a state with stronger toughness than the container, and even if a force that deforms the container is applied, the lid 10 can be more effectively suppressed from deforming.

As shown in FIG. 1A , the cover 10 has a cover area corresponding part 50B and an outer area corresponding part 50C. In the state of the container 500 with the lid, the lid 10 covers the opening 502 with the lid area corresponding part 50B. A joint area corresponding portion 50A is defined in the outer area corresponding portion 50C.

(Joint area corresponding part) The joining area corresponding part 50A is a part corresponding to the area|region which joins the container 501 along the edge part 503 of the container 501 in the lid body 10. That is, the joint area corresponding part 50A is a part of the cover 10 corresponding to the joint area R (the area facing the edge 503 of the container 501 and the area joined to the container 501 ). The joint area corresponding portion 50A is a portion of the container 500 with a lid that forms the joint portion 651 between the lid 10 and the container 501 in the lid 10 . Specifically, when the cover 10 is viewed from above (in the example of FIG. 1 , the vertical direction is the viewing direction), the portion forming the joint region R is defined as the joint region corresponding portion 50A. The bonding area corresponding portion 50A is generally formed in an annular shape as shown in FIG. 1A . In particular, as shown in FIG. 1A , when the edge portion 503 of the container 501 is generally formed in an annular shape, the joint region R becomes annular, and the joint region corresponding portion 50A is also generally circular in plan view of the cover 10 . Become a ring shape. The outer edge of the bonding area corresponding portion 50A is determined based on the position of the outer edge of the bonding area R. The outer edge of the joint area corresponding portion 50A may be located on the outer peripheral edge 75 of the cover 10 , or may be located inside the outer peripheral edge 75 of the cover 10 as shown in the examples of FIGS. 1A and 1B . When the joint regions R of the lid 10 and the container 501 are not continuously formed, the portion sandwiched between the adjacent joint regions R and facing the edge 503 is also included in the joint region corresponding portion 50A described below. . In addition, when the portion of the cover 10 facing the edge portion 503 has a portion located inside the base end 13 (starting end of erection) of the convex portion 11 described later, the convex portion 11 The portion located inside the base end 13 (starting end of erection) is not included in the joint area corresponding part 50A, but is included in the cover area corresponding part 50B (specified as the second covering part 50E) described later.

(Cover area corresponding part) The cover area corresponding part 50B is a part of the cover body 10 located inside with respect to the joint area corresponding part 50A. The lid area corresponding portion 50B is a portion that covers the opening 502 in the container 500 with a lid. In addition, the portion covering the opening 502 refers to a portion covering at least a part of the opening 502 , and includes a case where a window is formed on a part of the container 501 so that the inside of the container 501 can be visually observed, and a case where the opening forming part 30 is provided. Situation etc. The window portion can be, for example, a structural portion in which an opening is formed in the cover area corresponding portion 50B and a light-transmissive member (eg, a transparent film, etc.) is attached (eg, adhered) to close the opening.

The cover area corresponding part 50B shown in the example of FIG. 1A and FIG. 1B has the 1st covering part 50D and the 2nd covering part 50E formed outside the 1st covering part 50D. The first covering part 50D corresponds to the container opening covering part, and the second covering part 50E corresponds to the container upper edge covering part. Here, the container opening covering portion is a portion of the cover area corresponding portion 50B that covers directly above the opening 502 . The container upper edge covering portion covers the portion directly above the edge portion 503 in the cover area corresponding portion 50B and forms a part of the convex portion 11 . In the example of FIG. 1 , when the lid 10 is viewed from above, the container upper edge covering portion serving as the second covering portion 50E is formed to surround the container opening covering portion serving as the first covering portion 50D. The second covering portion 50E may be omitted depending on the position of the base end 13 of the convex portion 11 .

(Outside area corresponding part) In addition, as shown in the examples of FIGS. 1A and 1B , the portion outside the cover area corresponding portion 50B of the cover 10 is the outer area corresponding portion 50C. The outer area corresponding part 50C is composed of the same part as the joint area corresponding part 50A or a part corresponding to the outer side from the joint area corresponding part 50A.

(convex part) In the cover 10, as shown in FIG. 1B, the convex portion 11 is formed in the cover area corresponding portion 50B. The convex portion 11 is a portion extending from the joint area corresponding portion 50A as the base end 13 (the base end of the convex portion 11 ) to the center CT of the cover area corresponding portion 50B, and from the opposite direction facing the opening 502 of the container 501 The surface 73 bulges in the direction toward the exposed surface 72 side (the surface facing away from the opposing surface 73 ) which is the opposite surface.

(Outside wall and inside wall) The convex portion 11 has an inner wall surface 14 and an outer wall surface 12 . The outer wall surface 12 of the convex portion 11 is formed on the exposed surface 72 side, facing away from the inner wall surface 14, and stands toward the cover area corresponding portion 50B with the inner end of the joint area corresponding portion 50A as the base end 13. When the lid 10 is joined to the container 501, the outer wall surface 12 forms an exposed surface 72. The outer wall surface 12 may be raised diagonally or vertically with the joint area corresponding portion 50A as the base end (the starting position of the outer wall surface 12 to stand up). The inner wall surface 14 of the convex portion 11 is the surface facing the container 501 among the surfaces of the convex portion 11 , and is formed on the opposite surface 73 side of the lid 10 and faces away from the outer wall surface 12 . When the lid 10 is joined to the container 501, the inner wall surface 14 forms the facing surface 73. The outer wall surface 12 and the inner wall surface 14 are formed in shapes corresponding to each other.

In the example of FIGS. 1A and 1B , the convex portion 11 is formed in an arch shape. The outer wall surface 12 of the convex portion 11 becomes a convex curved surface. The inner wall surface 14 is a concave curved surface. In the example of FIG. 1B , the concave curved surface forming the inner wall surface 14 has a shape corresponding to the outer wall surface 12 . That is, in the cover 10 , the protruding convex portion 11 is formed on the exposed surface 72 side, and the concave portion 15 corresponding to the convex portion 11 is formed on the opposite surface 73 side. Even if water droplets adhere to the inner wall surface 14 of the cover 10 , the water droplets tend to flow downward along the inner wall surface 14 of the cover 10 . From this point of view (the viewpoint that it is difficult to sustain a state in which a large number of water droplets adhere to the cover 10 ), The convex portion 11 is preferably formed in an arch shape.

In the example of FIG. 1A , the end portion on the inner side wall surface 14 side of the base end 13 of the convex portion 11 is located at the inner end of the joint region corresponding portion 50A. In this case, in a state where the lid 10 is joined to the container 501 , as shown in FIG. 8A , the base end 13 of the convex portion 11 is located slightly outside the inner end 503A of the edge 503 of the container 501 , and the base end 13 Located directly above the edge 503. Therefore, when the lid 10 is joined to the container, the structure of the joint portion 651 can be made firm, and the shape of the container with the lid can be further stabilized. That is, the lid 10 expands three-dimensionally in the lateral direction and the up-down direction starting from the portion joined to the container 501. Even if a force deforming the container 501 in the lateral direction is applied, and even if a force deforming the container 501 is applied in the up-down direction, The deformation of the cover 10 can be restricted. In addition, the inner end 503A of the edge 503 is set to a position where the upper surface of the edge 503 starts to descend toward the inner surface side of the container.

[1-2. Manufacturing method] It is formed using a blank in which a sheet (raw material sheet) made of a material corresponding to the material of the cover 10 is punched according to the shape of the cover 10 .

In addition, the case where the cover 10 is formed from a blank is not limited to the case where the cover 10 is formed only from a blank. It also includes a case where the cover 10 has a structure in which components such as the handle member 41 are attached to the blank. 10. Various processing treatments such as shaping (embossing, etc.) are performed on the blank.

The raw material sheet is preferably composed of a fiber sheet including paper material.

(fiber sheet containing paper material) Examples of fiber sheets containing paper-based materials include so-called paper obtained by taking the slurry of fiber raw materials onto a mesh, drying or press-drying, and sheeting it into a sheet shape, and paper obtained by using a pulverizer with an air flow. Plant fibers and other fibers are adhered to each other, so-called air-laid sheets obtained by pulverizing raw material sheets composed of pulp-based fibers, etc., and pulverized fiber-opened fiber raw materials such as pulp, which are obtained by stacking fibers and fixing the fibers of the fiber stack to each other with a binder. And the so-called paper made. In addition, fiber sheets containing paper materials include fiber sheets having a laminated structure in which a plurality of papers as described above are laminated. In addition, fiber sheets include, in addition to paper materials, sheets containing fibers other than pulp such as chemical fibers, fibers endowed with functions such as water resistance, metal fibers, and glass fibers.

The fiber sheet may be composed of fibers alone, or may have a structure in which a plurality of fibers are cross-linked using a crosslinking agent or the like, or may contain additives other than the resin material described below. In the fiber sheet, a plurality of fibers are cross-linked with each other using a cross-linking agent, thereby stabilizing the shape of the fiber sheet and making it difficult to defibrate.

(fiber) The fibers constituting the fiber sheet may be composed of one unit fiber, or may have a structure in which a plurality of unit fibers are intertwined. Fibers having either structure may be included in the fiber sheet. The fiber sheet is preferably formed in a state in which a plurality of fibers having such a structure are further intertwined.

[1-3. Modification] (Modification 1) In the cover 10 of the first embodiment, as shown in FIGS. 4A and 4B , the base end of the inner wall surface 14 of the convex portion 11 may be located outside the joint area corresponding portion 50A (Modification 1). In the example of FIGS. 4A and 4B , the base end of the inner wall surface 14 of the convex portion 11 is located inside the joint area corresponding portion 50A, and the base end of the outer wall surface 12 of the convex portion 11 is located inside the joint area corresponding portion 50A. fate. In addition, in the example of Modification 1 of the first embodiment shown in FIGS. 4A and 4B , in a state where the lid 10 is joined to the container 501 , as shown in FIG. 8B , the joint between the container 501 and the lid 10 is The inner end of the portion 651 is formed at the base end of the outer wall surface 12 of the convex portion 11 . In addition, in the examples of FIGS. 4A and 4B , the second covering portion 50E is omitted. In addition, the example of FIG. 4A and FIG. 4B is an example, and the base end of the outer wall surface 12 of the convex part 11 may be located inside the joint area corresponding part 50A, and the inner edge of the joint area corresponding part 50A may be located at the convex part 11 between the base end of the inner wall surface 14 and the base end of the outer wall surface 12 of the convex portion. In this case, in a state where the lid 10 is joined to the container 501, as shown in FIG. 8C, the inner end of the joint portion 651 between the container 501 and the lid 10 is connected to the base end of the outer wall surface 12 of the convex portion 11. It is formed at a position between the base ends of the inner wall surface 14 . According to the lid 10 of the first embodiment shown in FIG. 8C , even if deformation force is applied such as flattening the lid 10 from the container 501 in the state of the container 500 with the lid, the paper-like material forming the lid 10 can The piece-like member expands in a planar shape from the base end of the convex portion 11, thereby easily resisting the force component in either the horizontal direction or the up-down direction among the deformation forces.

(Modification 2) In the cover of the first embodiment, the shape of the convex portion 11 is not limited to the dome shape. For example, as shown in FIGS. 5A and 5B , the convex portion may be formed into a truncated cone shape. Alternatively, for example, the convex portion 11 may be formed in a pyramidal shape having an apex above.

[2 Second Embodiment] As shown in FIG. 6A , the cover 10 of the second embodiment further has the penetration portion 20 in the convex portion 11 of the cover 10 of the first embodiment. This mode is called the second embodiment. FIG. 6A is a plan view schematically showing an example of the cover 10 according to the second embodiment. In the second embodiment, other structures except the penetration portion 20 are the same as those in the first embodiment, and therefore detailed descriptions of other structures (the convex portion 11 and the like) are omitted.

The penetration portion 20 has a structure (penetrating structure) in which one surface of the cover 10 is cut into the other surface (from the exposed surface 72 to the opposing surface 73 ) in the up-down direction (thickness direction), and is a so-called cut-out portion. The shape of the penetration portion 20 is not particularly limited, and may be a cross shape as shown in FIG. 6A or a C-shape as shown in FIG. 6C . These are only examples and do not limit the shape of the penetration portion 20 . FIG. 6C is a plan view schematically showing an example of the cover 10 according to the second embodiment.

The penetration portion 20 can function as an insertion port 21 for inserting a straw or the like from the outside.

In the cover 10 of the second embodiment, the portion functioning as the insertion opening 21 is not limited to the case where it is formed only by the through portion 20 (the entire portion is formed by the through portion 20). In the cover 10 of the second embodiment, as shown in FIG. 6B , the convex portion 11 may be provided with a weakening portion 22 that guides the split position in the cover area corresponding portion 50B. The weakened portion 22 may have a plurality of through portions 20 and at least one continuous portion 23 formed between at least two through portions 20 . In this case, the cover 10 has the penetration portion 20 as a part of the structure forming the insertion opening 21 . The weakened part 22 may be changed to a combination of the through part 20 and the continuous part 23 to form a half-cut structure. For example, when the insertion port 21 is formed in a cross shape (intersection shape) as shown in FIGS. 6A and 6B , a half-cut structure may be formed as the weakened portion 22 so that the cover area corresponding portion 50B is formed when the insertion port 21 is formed. The parts are split in a cross pattern.

In addition, when the weakened part 22 is provided, as shown in FIG. 6B , the weakened part 22 may have a plurality of penetration parts 20 formed in a radial shape around the continuous part 23 . In addition, this is only an example, and as shown in FIG. 6D , the through portions 20 and the continuous portions 23 may be alternately arranged on the locus forming the character C. In the example of FIG. 6D , four through parts 20 and three continuous parts 23 are arranged alternately. In the example of FIG. 6D , if a straw or the like is inserted from the outside in the downward direction from the upper side of the weakened part 22 , the three continuous parts 23 are destroyed, and the straight part connecting the base ends of the C character is used as the rotation axis (shown by the dotted line The rotation axis P) shown rotates the portion surrounded by the weakened portion 22 and the rotation axis P.

In the lid 10 of the second embodiment, stress may be applied to the lid 10 due to insertion and removal of the straw, and in this case, stress may also be applied to the container 501 when the user holds the container. Even in this case, by forming the convex portion 11 having a specific structure, the shape deformation of the container with lid 500 can be suppressed.

[3 Third Embodiment] As shown in FIGS. 2A and 2B , the lid 10 of the third embodiment may further include an opening forming portion 30 formed on the convex portion 11 in the lid 10 of the first embodiment. This mode is called the third embodiment. 2A and 2B are a plan view and a cross-sectional view schematically showing an example of the cover 10 according to the third embodiment. In the third embodiment, other structures except the opening forming portion 30 are the same as those in the first embodiment, and therefore detailed descriptions of other structures (the convex portion 11 and the like) are omitted. In addition, in FIG. 2B , a dotted line indicates a state in which the small cover 33 is opened.

In the third embodiment, the opening forming part 30 has a small opening part 32 which is provided at a predetermined position of the cover area corresponding part 50B and has an opening area smaller than the opening part 502 of the container 501; The small cover portion 33; and the hinge portion 34 serving as a rotation axis when opening and closing the small cover portion 33. The cover area corresponding part 50B has a base part 35 as a part which connects the small cover part 33 via the hinge part 34. A small opening 32 is formed in the base 35 . The small cover part 33 is configured to be rotatable relative to the base part 35 with the hinge part 34 as an axis. By pulling up (opening) the small cover part 33 in the rotation direction (the direction indicated by the arrow in FIG. 2B (rotation direction RD)) , and the small opening 32 is in an open state.

The opening forming portion 30 has a through portion 31 . In the example of FIG. 2A , the through portion 31 is formed along at least part of the boundary position between the outer peripheral edge 37 of the small cover portion 33 and the opening edge 36 of the small opening portion 32 (in FIG. 2A , the entire boundary position).

The boundary between the outer peripheral edge 37 of the small cover portion 33 and the opening edge 36 of the small opening portion 32 is located inside the convex portion 11 and/or at the base end 13 of the convex portion 11 . In the example of FIG. 2A , the boundary position between the outer peripheral edge 37 of the small cover portion 33 and the opening edge 36 of the small opening portion 32 is formed inside the convex portion 11 . In addition, the portion where the boundary position and the hinge portion 34 are combined are formed in an annular shape. That is, the boundary position is combined with the hinge portion 34 and is arranged to be divided by a predetermined portion inside the convex portion 11 and a portion outside the convex portion 11 . In addition, when the small cover portion 33 is pulled up in the direction indicated by the rotation direction RD with the hinge portion 34 as the axis at the boundary position, more than half or substantially the entire convex portion 11 can be pulled up. In addition, the small cover part 33 and the small opening part 32 are preferably formed so that when the small cover part 33 is pulled up with the hinge part 34 as an axis, the center CT of the cover area corresponding part 50B of the cover body 10 exists in the small opening. inside of part 32. In the example of FIG. 2A , the portion occupied by the boundary position in the portion (annular portion) formed by combining the boundary position and the hinge portion 34 occupies a portion slightly shorter than the entire annular portion (occupies a portion that is substantially close to the annular portion). overall scope).

In the lid 10 of the third embodiment, stress may be applied to the lid 10 by operations of the opening forming portion 30 and the like, and at this time, stress is also applied to the container 501 when the user holds the container. Even in this case, the shape deformation of the container 500 with a lid can be suppressed by forming the convex portion 11 having a specific structure.

(Modification) In the cover 10 of the second embodiment, as shown in FIGS. 3A and 3B , a grip portion 40 may be provided on the upper surface side of the small cover portion 33 . In the example of FIGS. 3A and 3B , in a state where the small opening 32 is closed by the small cover 33 , a pinch is provided on the exposed surface (exposed surface 72 of the cover 10 ) side of the small cover 33 (the exposed surface 72 of the cover 10 ), that is, on the upper surface side. Holding part 40. The structure of the grip part 40 is not particularly limited as long as the small cover part 33 can be rotated to lift the small cover part 33 with the hinge part 34 as an axis. In the example of FIG. 3A , the grip part 40 is provided with a pull tab member. 41.

[4 Application examples] As shown in FIGS. 7A and 7B , the lid 10 of the first embodiment can be used in a container 500 with a lid. 7A and 7B show an example in which the lid 10 of the first embodiment is joined to an edge 503 formed on the outer periphery (upper end edge) of the opening 502 of the container 501 having the opening 502 formed at the upper end. Stereo view. FIG. 7B is a cross-sectional view schematically showing a longitudinal cross-section along the line in FIG. 7A . The container 500 with a lid will be described using FIGS. 7A and 7B .

(container with lid) The container 500 with a lid has a joint portion 651 where the container 501 and the lid 10 are joined, and the area of the lid 10 where the joint portion 651 is formed becomes the joint region R. The method of joining the lid 10 and the container 501 is not particularly limited, and joining methods such as a pressure bonding method and a thermal fusion method (heat sealing) can be used appropriately. Hereinafter, the case where the lid 10 of the first embodiment is used in the container 500 with a lid will be described as an example.

The container 501 has a container main body 510 which has a cylindrical side wall 504 and a bottom 507 whose diameter increases upward (and becomes thinner toward the lower end), with a space 505 formed therein; and an opening 502 . It opens at the upper end of the container body 510 (the upper end of the side wall 504). Although not shown in the figure, the opening 502 of the container 501 is formed in a circular shape. However, the container 501 shown here is an example, and the structure of the container 501 is not limited. For example, the container 501 may have the opening 502 formed in a rectangular shape. The container 501 only needs to be able to cover the opening 502 with the lid 10 . In addition, the items stored in the inside of the container 501 (space part 505) are not particularly limited, and examples thereof include liquid items, solid items, or combinations thereof.

In the container shown in FIG. 7A etc., the edge part 503 of the opening part 502 has a flange part. The flange portion may be a curled portion 508 obtained by winding the member forming the container body 510 outward, or may be formed as a portion (eaves portion) extending on a plane in the outward direction.

In addition, the lid 10 of the first embodiment may be combined with the container 501 having the opening 502 .

The case shown in the above [4 Application Examples] is not limited to the case where the cover 10 of the first embodiment is used. The second and third embodiments can also be used for a container with a lid 500 (not shown) joined to the container 501 in the same manner as the lid 10 of the first embodiment.

As explained so far, the cover 10 of the present invention can be applied to such various types of covers 10 . In addition, it can also be applied to the cover 10 in other forms than the above. The cover body of the present invention has been described in detail above. However, the above description is only an example of the cover body of the present invention and is not limited thereto. Therefore, appropriate changes can be made without departing from the gist of the present invention. In addition, the structure of the cover mentioned above can be used independently by the structure of the cover of each example, and can also be applied by suitably combining the structure of the cover of each example.

10: Cover 11: convex part 12:Outer wall surface 13: base end 14:Inner wall surface 15: concave part 20: Penetration Department 21: Insertion port 22: Ministry of Vulnerability 23: Continuity Department 30: Opening forming part 31: Penetrating Department 32:Small opening 33: Small cover 34:Hinged part 35:Base 36:Opening edge 37: Outer periphery 40:Pinch part 41: Pull tab parts 50: Container upper edge covering part 50A: Joint area corresponding part 50B: Cover area corresponding part 50C: Outer area corresponding part 50D: 1st covering part 50E: 2nd covering part 72: Show your face 73:Opposite side 75: Outer periphery 500: Containers with lids 501: Container 502:Opening part 503: Edge 503A:Inner end 504:Side wall 505:Space Department 507: Bottom 508: Curly part 510: Container body 651:Joint CT:center P:Rotation axis R: joint area RD: direction of rotation

[Fig. 1] Fig. 1A is a plan view showing an example of the cover body according to the first embodiment. FIG. 1B is a cross-sectional view schematically showing a longitudinal cross-section along line AA in FIG. 1A . [Fig. 2] Fig. 2A is a plan view showing an example of the cover body according to the third embodiment. FIG. 2B is a cross-sectional view schematically showing a longitudinal cross-section along line BB in FIG. 2A . [Fig. 3] Fig. 3A is a plan view showing an example of the cover body according to the third embodiment. FIG. 3B is a cross-sectional view schematically showing a vertical cross-section along line CC in FIG. 3A . [Fig. 4] Fig. 4A is a plan view showing an example of the cover body according to the first embodiment. FIG. 4B is a cross-sectional view schematically showing a longitudinal cross-section along line DD in FIG. 4A . [Fig. 5] Fig. 5A is a plan view showing an example of the cover body according to the first embodiment. FIG. 5B is a cross-sectional view schematically showing a longitudinal cross-section along line EE in FIG. 5A . [Fig. 6] Fig. 6A, Fig. 6B, Fig. 6C, and Fig. 6D are plan views showing an example of the cover body according to the second embodiment. [Fig. 7] Fig. 7A is a perspective view showing one embodiment of the container with a lid. FIG. 7B is a cross-sectional view schematically showing a longitudinal cross-section along line FF in FIG. 7A . [Fig. 8] Fig. 8A, Fig. 8B, and Fig. 8C are partial enlarged cross-sectional views showing one embodiment of the container with a lid.

10: Cover

11: convex part

12:Outer wall surface

13: base end

14:Inner wall surface

15: concave part

50A: Joint area corresponding part

50B: Cover area corresponding part

50C: Outer area corresponding part

50D: 1st covering part

50E: 2nd covering part

72: Show your face

73:Opposite side

75: Outer periphery

R: joint area

Claims (11)

A cover body characterized by: It is formed in a state in which the opening is covered with respect to the container having the opening and is formed in such a manner that the container can be joined, have: a joint area corresponding portion consisting of a portion corresponding to the area to be jointed with the aforementioned container; and a cover area corresponding portion composed of an inner portion of the aforementioned joint area corresponding portion, The lid area corresponding portion is formed with a convex portion, and the convex portion has the joint area corresponding portion as a base end and extends to the center of the lid area corresponding portion from an opposite surface facing the opening portion of the container toward the opening portion of the container. The aforementioned opposite surface is bulged in the direction of the opposite surface. The cover as claimed in claim 1, wherein, The convex portion has an inner wall surface facing the container, and an outer wall surface facing away from the inner wall surface, The outer wall surface has a convex curved surface, and the inner wall surface has a concave curved surface. The cover as claimed in claim 1, wherein, The convex portion has an inner wall surface facing the container, and an outer wall surface facing away from the inner wall surface, The base end of the inner wall surface is offset from the joint area corresponding part, and the base end of the outer wall surface is located in the joint area corresponding part. The cover according to any one of claims 1 to 3, wherein, A penetration portion is formed in the convex portion. The cover as claimed in claim 4, wherein, The convex part is provided with a weakening part that guides the split position in the convex part, The weakened portion has a plurality of the through portions and at least one continuous portion formed between at least two of the through portions. The cover as claimed in claim 5, wherein, The weakened portion has a plurality of the through portions formed in a radial shape around the continuous portion. The cover according to any one of claims 1 to 3, wherein, The convex part is provided with a weakening part that guides the split position in the convex part, The weakened portion has a half-cut structure. The cover as claimed in claim 4, wherein, The convex part has: a base part having a small opening; a small lid part opening and closing the small opening part; and a hinge part connecting the base part and the small lid part, and the small opening part has a diameter larger than the opening part of the container. Small opening area, The small cover part is configured to be rotatable relative to the base part with the hinge part as an axis, The boundary position between the outer peripheral edge of the small cover portion and the opening edge of the small opening portion is located inside the convex portion or at the base end of the convex portion, At least a part of the through portion is formed at the boundary position. The cover as claimed in claim 8, wherein, A gripping portion is provided on the upper surface side of the small cover portion. A container with a lid, characterized in that it has: The cover according to any one of claims 1 to 9; and the aforementioned container, the aforementioned container having the aforementioned opening formed at an upper end, The lid is joined to the container. A combination of a cover and a container, characterized by: The cover according to any one of claims 1 to 9; and The container has the opening formed at an upper end.