JP7785432B2 - Container with opening blade - Google Patents

Description

The present invention relates to a container with an opening blade.

A known container with an opening blade includes a container body with a mouth, a sheet-like member that seals the mouth, an opening blade positioned on the outside of the sheet-like member, and a cap that can form a drinking spout by opening the sheet-like member with the opening blade (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2010-222051

It is desirable that the container with an opening blade such as the one described above easily maintains the opening after the opening blade has formed the opening.

The object of the present invention is to provide a container with an opening blade that makes it easy to keep the drinking spout open after it has been formed with the opening blade.

One aspect of the present invention is as follows:

[1]
a container body having a mouth;
a sheet-like member that seals the opening;
an opening member disposed on the outer side of the sheet-like member and having an opening blade and a locking piece;
a cap disposed outside the unsealing member and having a pushing piece and a protruding piece;
The cap is configured to form a drinking spout by being pushed against the pushing piece, and the sheet-like member is opened by the opening blade which is pushed by the pushing piece and rotated inward, and
A container with an opening blade, wherein the cap is capable of forming an insertion opening into which the locking piece, which has rotated outward in conjunction with the opening blade, is elastically deformed by the pushing operation causing the protruding piece to rotate outward in conjunction with the pushing piece.

[2]
The opening member has an opening member fixing portion fixed to the opening portion, and an opening member rotating portion rotatably connected to the opening member fixing portion via an opening member hinge portion about a first rotation axis , and having the opening blade and the locking piece, and is connected to the opening member hinge portion at two locations on both sides of a cutout portion at which the locking piece is located at the base end of the opening blade in the direction along the first rotation axis,
The container with an opening blade described in [1], wherein the cap has a cap fixing portion that is fixed to the mouth portion, and a cap rotating portion that is rotatably connected to the cap fixing portion via a cap hinge portion around a second rotation axis and has the pushing piece and the protruding piece, and the cap is connected to the cap hinge portion at two points on either side of a slit that separates the protruding piece at the base end of the pushing piece in the direction along the second rotation axis.

[3]
the opening member has an opening member fixing portion fixed to the opening portion, and an opening member rotating portion rotatably connected to the opening member fixing portion via an opening member hinge portion, and having the opening blade and the locking piece,
the cap has a cap fixing portion fixed to the mouth portion, and a cap rotating portion rotatably connected to the cap fixing portion via a cap hinge portion, the cap having the pushing piece and the protruding piece,
The container with an opening blade according to [1] or [2], wherein the opening member fixing portion and the cap fixing portion are fitted together so that circumferential rotation of the opening portion relative to each other is restricted.

This invention provides a container with an opening blade that makes it easy to maintain the opening after the opening blade has formed the drinking spout.

1 is a vertical cross-sectional view showing an unopened state of a container with an opening blade in one embodiment of the present invention. FIG. 2 is a top view of the unsealing member shown in FIG. 1 . FIG. 2 is a top view of the cap shown in FIG. 1 . FIG. 2 is a partially enlarged view of FIG. 1. 2 is a vertical cross-sectional view showing the opened state of the container with an opening blade shown in FIG. 1. [0023]FIG.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in Figure 1, in one embodiment of the present invention, a container with an opening blade 1 has a container body 2, a sheet-like member 3, an opening member 4, and a cap 5.

The container body 2 is cup-shaped and includes a cylindrical body 6 whose diameter tapers downward, a flange 7 extending radially outward from the upper end of the body 6, and a bottom 8 closing the lower end of the body 6. The upper part of the body 6 and the flange 7 form a cylindrical opening 2a centered on the central axis O of the body 6. The body 6 is not limited to a cylindrical shape, and may be configured in a cylindrical shape other than a cylindrical shape, such as an elliptical or rectangular shape. The material from which the container body 2 is formed is not particularly limited, and may be, for example, paper, resin, etc.

For ease of explanation, the direction along the central axis O is also referred to as the up-down direction, the direction along the central axis O from the bottom 8 side toward the mouth 2a side is also referred to as the upward direction, and the opposite direction is also referred to as the downward direction, the direction along a line perpendicular to the central axis O is also referred to as the radial direction, the direction going around the central axis O is also referred to as the circumferential direction, and a cross section including the central axis O is also referred to as a longitudinal cross section.

The container body 2 contains a beverage as a content (not shown). There are no particular restrictions on the beverage, and it may be a hot or cold beverage.

The sheet-like member 3 is stretched over the upper end of the mouth portion 2a and is fixed to the upper surface of the flange portion 7 at its outer periphery, sealing the mouth portion 2a. The sheet-like member 3 can be made of, for example, an aluminum or resin film.

As shown in Figures 2 and 4, the opening member 4 has an opening member fixing portion 4a that is fixed to the opening portion 2a, and an opening member rotating portion 4c that is rotatably connected to the opening member fixing portion 4a via an opening member hinge portion 4b and has an opening blade 9 and a locking piece 10, and is positioned on the outside of the sheet-like member 3. Two points on either side of the locking piece 10 at the base end of the opening blade 9 are connected to the opening member hinge portion 4b.

The opening member 4 is a one-piece molded product formed by injection molding using a resin such as olefin resin or polyester resin. However, the material from which the opening member 4 is formed is not limited to resin. Furthermore, the molding method for the opening member 4 is not limited to injection molding. The opening member 4 is not limited to a one-piece molded product, and may also be formed by assembling multiple components.

The opening member fixing portion 4a has an opening member outer peripheral portion 11 that forms a ring extending circumferentially and is positioned directly above the flange portion 7, and a bridge portion 12 that extends so as to bridge between two points on the opening member outer peripheral portion 11.

The unsealing member outer peripheral portion 11 has a bottom wall portion 11a that is annular and extends circumferentially, a standing wall portion 11b that extends upward from the inner peripheral edge of the bottom wall portion 11a and also extends circumferentially, and a top wall portion 11c that extends radially inward from the upper end of the standing wall portion 11b and also extends circumferentially. The bottom wall portion 11a is located directly above the flange portion 7. The unsealing member outer peripheral portion 11 also has a fitting recess 11d that is formed by cutting out the standing wall portion 11b and the top wall portion 11c at one location in the circumferential direction.

The bridge portion 12 extends horizontally through the central axis O. Note that the bridge portion 12 is not limited to a configuration that passes through the central axis O, and may also be configured to extend horizontally without passing through the central axis O. The bridge portion 12 has a long plate portion 12a that extends horizontally and has an outer wall and a bottom wall that form a recess that opens upward, and connecting portions 12b at both ends of the long plate portion 12a in the longitudinal direction (also referred to as the left-right direction) that connect the upper ends of the outer wall to the top wall portion 11c of the unsealing member outer portion 11.

The bridge portion 12 also has a protrusion 12c that protrudes from the end of one side (also called the front) in the short direction of the long plate portion 12a when viewed from above, and whose tip connects to the opening member hinge portion 4b. The protrusion 12c is L-shaped and curves upward. The protrusion 12c also has a notch 12d in which the locking piece 10 is positioned. The tip of the protrusion 12c connects to the opening member hinge portion 4b at two points on either side of the notch 12d.

When viewed from above, an opening is formed behind the bridge portion 12 (opposite the front) and surrounded by the bridge portion 12 and a portion of the outer periphery 11 of the opening member. Therefore, the opening member 4 can be formed with a small amount of material. The opening member 4 is not limited to having a bridge portion 12, and may also have an opening member fixing portion 4a formed in the opening portion.

When viewed from above, the opening blade 9 extends forward from the base end located at the tip of the protrusion 12c to the tip end (cutting edge 9a). The opening blade 9 also tapers forward when viewed from above. However, the shape of the opening blade 9 is not limited to a shape that tapers forward when viewed from above. The locking piece 10 is a protrusion that extends rearward from the base end of the opening blade 9 when viewed from above.

When viewed from the left to right, the opening blade 9 has a curved shape that is convex upward. More specifically, when viewed from the left to right, the opening blade 9 has a shape in which a straight portion is bent in two places.

The cutting edge 9a of the opening blade 9 is sharp when viewed from above and from the left to right. The shape of the cutting edge 9a can be set appropriately depending on the material of the sheet-like member 3, the arrangement of the opening blade 9, etc.

As shown in Figures 3 and 4, the cap 5 has a cap fixing portion 5a that is fixed to the mouth portion 2a, and a cap rotating portion 5c that is rotatably connected to the cap fixing portion 5a via a cap hinge portion 5b and has a push-in piece 13 and a protrusion 14, and is positioned outside the unsealing member 4. Two points on either side of the protrusion 14 at the base end of the push-in piece 13 are connected to the cap hinge portion 5b.

The cap 5 is a one-piece molded component formed by sheet molding using a resin such as olefin resin or polyester resin. However, the material from which the cap 5 is formed is not limited to resin. Furthermore, the method for forming the cap 5 is not limited to sheet molding. The cap 5 is not limited to a one-piece molded component, and may be formed by assembling multiple components.

The cap fixing portion 5a has a cap outer peripheral portion 15 that forms a ring extending circumferentially and is positioned directly above the unsealing member outer peripheral portion 11, and an inner peripheral panel portion 16 that extends radially inward from the cap outer peripheral portion 15 to form a recessed shape that opens upward. The cap outer peripheral portion 15 engages with the flange portion 7 so that the unsealing member outer peripheral portion 11 is sandwiched and fixed between the cap outer peripheral portion 15 and the flange portion 7. The inner peripheral panel portion 16 has a bottom surface portion 16a, an outer peripheral surface portion 16b that forms a ring extending upward from the outer edge of the bottom surface portion 16a and extending circumferentially, and a top surface portion 16c that connects the upper edge of the outer peripheral surface portion 16b to the upper edge of the upper peripheral wall 15a and extends circumferentially.

The cap outer periphery 15 has a cylindrical upper peripheral wall 15a that widens in diameter downward, a stepped wall portion 15b that extends radially outward from the lower end of the upper peripheral wall 15a and also extends circumferentially, and a lower peripheral wall 15c that extends downward from the outer periphery of the stepped wall portion 15b and also extends circumferentially. The lower peripheral wall 15c has a locking protrusion 15d that protrudes radially inward to lock onto the underside of the outer periphery of the flange portion 7. The locking protrusion 15d extends circumferentially continuously or intermittently.

The upper peripheral wall 15a has a mating protrusion 15e that protrudes radially inward at one circumferential location. The mating protrusion 15e fits into the mating recess 11d so that circumferential rotation is restricted. In this way, the unsealing member fixing portion 4a and the cap fixing portion 5a fit together so that circumferential rotation relative to each other is restricted.

The pushing piece 13 extends forward from the base end to the tip end when viewed from above. The pushing piece 13 also has a shape that tapers toward the front when viewed from above. However, the shape of the pushing piece 13 is not limited to a shape that tapers toward the front when viewed from above.

The protruding piece 14 is flush with the bottom surface 16a of the inner peripheral panel portion 16 and extends rearward from the base end of the pushing piece 13 when viewed from above. The protruding piece 14 is defined by a slit 5d that is U-shaped when viewed from above. Note that the shape of the slit 5d is not limited to being U-shaped when viewed from above.

The base end of the push-in piece 13 is connected to the bottom surface 16a of the inner panel portion 16 via the cap hinge portion 5b. The outer edge portion of the push-in piece 13 other than the base end, as viewed from above, is connected to the bottom surface 16a of the inner panel portion 16 via a planned tear portion 5e formed by a perforation, thin-walled portion, or the like. Note that the outer edge portion of the push-in piece 13 other than the base end, as viewed from above, is not limited to being connected to the bottom surface 16a of the inner panel portion 16 via the planned tear portion 5e, and may instead be separated by a dividing portion formed by, for example, a slit.

When viewed from the left to right, the pushing piece 13 has a curved shape that is convex upward. More specifically, when viewed from the left to right, the pushing piece 13 has a shape in which a straight portion is bent in two places.

As shown in Figures 4 and 5, when the cap 5 is pushed inward (downward) against the pushing piece 13, the pushing piece 13 rotates inward about the first rotation axis X1 via the opening member hinge portion 4b, causing the cap 5 to be pushed in. The opening blade 9 rotates inward about the second rotation axis X2 via the cap hinge portion 5b, causing the sheet-like member 3 to be cut and opened, forming the drinking spout 17.

The drinking spout 17 is formed at the front of the cap 5 by the upper peripheral wall 15a, top surface 16c, outer peripheral surface 16b, and bottom surface 16a. For example, by placing lips against the upper peripheral wall 15a and tilting the container with opening blade 1, the contents of the container body 2 can be forced to flow out through the opening formed in the sheet-like member 3 and the opening formed between the push-in piece 13 and the cap fixing portion 5a (bottom surface 16a) and into the mouth.

Furthermore, when the cap 5 is pushed against the push-in piece 13 as described above, the protruding piece 14 rotates outward (upward) around the second rotation axis X2 in conjunction with the push-in piece 13, thereby forming an insertion opening 18 into which the locking piece 10, which rotates outward around the first rotation axis X1 in conjunction with the opening blade 9, is inserted by elastic deformation.

According to this embodiment, once the drinking spout 17 is formed by the above-described pushing operation on the pushing piece 13, the opening blade 9 and pushing piece 13 are prevented from returning to their original positions due to the restoring force from elastic deformation by the locking piece 10 fitted into the fitting opening 18 (more specifically, the locking piece 10 overlapping the protruding piece 14 is caught on the edge of the fitting opening 18), making it easy to maintain the drinking spout 17 open.

Furthermore, according to this embodiment, two points on either side of the locking piece 10 at the base end of the opening blade 9 are connected to the opening member hinge portion 4b, and two points on either side of the protruding piece 14 at the base end of the pushing piece 13 are connected to the cap hinge portion 5b, allowing for stable rotation of the opening blade 9 and the pushing piece 13. However, the container with opening blade 1 of this embodiment is not limited to this configuration.

Furthermore, according to this embodiment, the opening member fixing portion 4a and the cap fixing portion 5a are configured to fit together in a way that restricts circumferential rotation relative to each other, making it easy to position the opening blade 9 and the pushing piece 13 relative to each other in the circumferential direction. However, the container with opening blade 1 of this embodiment is not limited to this configuration.

The present invention is not limited to the above-described embodiments, and various modifications are possible without departing from the spirit of the invention.

Therefore, the container with opening blade 1 of the above-described embodiment can be modified as long as it is a container with opening blade 1 that includes a container body 2 having a mouth 2a, a sheet-like member 3 that seals the mouth 2a, an opening member 4 that is positioned on the outside of the sheet-like member 3 and has an opening blade 9 and a locking piece 10, and a cap 5 that is positioned on the outside of the opening member 4 and has a pushing piece 13 and a protruding piece 14. When the cap 5 is pushed against the pushing piece 13, the opening blade 9 is pushed inward by the pushing piece 13 and rotates to open the sheet-like member 3, forming a drinking spout 17. Furthermore, when the cap 5 is pushed, the protruding piece 14 rotates outward in conjunction with the pushing piece 13, forming an insertion opening 18 into which the locking piece 10, which rotates outward in conjunction with the opening blade 9, elastically deforms and fits.

For example, the drinking spout 17 is not limited to being formed at the front of the cap 5 by the upper peripheral wall 15a, top surface 16c, outer circumferential surface 16b, and bottom surface 16a. The shapes of the opening blade 9 and the pushing piece 13 when viewed from the left to right are not limited to a shape in which a straight portion is bent in two places, but may be set to any shape that is bent to form a convex shape that is convex upward, or may be set to any other shape.

DESCRIPTION OF SYMBOLS 1 Container with opening blade 2 Container body 2a Mouth portion 3 Sheet-like member 4 Opening member 4a Opening member fixing portion 4b Opening member hinge portion 4c Opening member rotating portion 5 Cap 5a Cap fixing portion 5b Cap hinge portion 5c Cap rotating portion 5d Slit 5e Planned breaking portion 6 Body portion 7 Flange portion 8 Bottom portion 9 Opening blade 9a Blade tip 10 Locking piece 11 Opening member outer periphery 11a Bottom wall portion 11b Standing wall portion 11c Top wall portion 11d Fitting recess 12 Bridge portion 12a Long plate portion 12b Connecting portion 12c Protruding portion 12d Cutout portion 13 Push-in piece 14 Projecting piece 15 Cap outer periphery 15a Upper peripheral wall 15b Step wall portion 15c Lower peripheral wall 15d Locking protrusion 15e Fitting protrusion 16 Inner panel part 16a Bottom part 16b Outer part 16c Top part 17 Spout 18 Fitting opening O Center axis X1 First rotation axis X2 Second rotation axis

Claims (3)

a container body having a mouth;
a sheet-like member that seals the opening;
an opening member disposed on the outer side of the sheet-like member and having an opening blade and a locking piece;
a cap disposed outside the unsealing member and having a pushing piece and a protruding piece;
The cap is configured to form a drinking spout by being pushed against the pushing piece, and the sheet-like member is opened by the opening blade which is pushed by the pushing piece and rotated inward, and
A container with an opening blade, wherein the cap is capable of forming an insertion opening into which the locking piece, which has rotated outward in conjunction with the opening blade, is elastically deformed by the pushing operation causing the protruding piece to rotate outward in conjunction with the pushing piece. The opening member has an opening member fixing portion fixed to the opening portion, and an opening member rotating portion rotatably connected to the opening member fixing portion via an opening member hinge portion about a first rotation axis , and having the opening blade and the locking piece, and is connected to the opening member hinge portion at two locations on both sides of a cutout portion at which the locking piece is located at the base end of the opening blade in the direction along the first rotation axis,
2. A container with an opening blade as described in claim 1, wherein the cap has a cap fixing portion fixed to the mouth portion, and a cap rotating portion connected to the cap fixing portion via a cap hinge portion so as to be rotatable around a second rotation axis , and having the pushing piece and the protruding piece, and wherein two points located on either side of a slit that separates the protruding piece at the base end of the pushing piece in the direction along the second rotation axis are connected to the cap hinge portion. the opening member has an opening member fixing portion fixed to the opening portion, and an opening member rotating portion rotatably connected to the opening member fixing portion via an opening member hinge portion, and having the opening blade and the locking piece,
the cap has a cap fixing portion fixed to the mouth portion, and a cap rotating portion rotatably connected to the cap fixing portion via a cap hinge portion, the cap having the pushing piece and the protruding piece,
The container with an opening blade according to claim 1 or 2, wherein the opening member fixing portion and the cap fixing portion are fitted together so that rotation of the opening portion relative to each other in the circumferential direction is restricted.