JP7445794B2 - container with lid - Google Patents

Description

The present invention relates to containers with lids.

For example, there is a container with a lid that has a heat-retaining/cold-retaining function with a container body having a vacuum insulation structure (see, for example, Patent Document 1 below). Such containers with lids employ a structure in which an opening provided in the container body is sealed using an inner lid and an outer lid.

Specifically, a container with a lid includes a container body with an opening at the top, an inner lid that is fitted into the inside of the container body from the opening to close the opening, and a container that is attached to the inner lid. The container is equipped with a waterproof packing (sealing member) that seals between the container body and the inner lid, and an outer lid that is screwed onto the container body while covering the opening from the outside. Moreover, the container with a lid has a structure in which an air hole (ventilation hole) provided in the inner lid is closed by a closure packing (stopper) provided in the outer lid.

In a container with a lid, when the outer lid is attached to the container body, the stopper packing comes into contact with the inner lid, thereby restricting upward movement of the inner lid. Further, in a container with a lid, when the outer lid is removed from the container body, the air hole is unblocked by the stopper packing. As a result, even if the pressure inside the container body drops (becomes negative pressure), when the outer lid is removed from the container body, outside air is introduced through the air hole, so the pressure inside the container body becomes atmospheric pressure. It will be the same. Therefore, it is possible to release the state in which the inner lid is pulled inside the container body and easily remove the inner lid from the container body.

Japanese Patent Application Publication No. 2013-227034

By the way, in the above-mentioned conventional container with a lid, for example, when high-temperature contents are put inside the container body, the temperature decreases and the container body is sealed tightly by the inner lid and the outer lid. The internal pressure decreases (becomes negative pressure), and the inner lid is pressed against the container body.

At this time, the tightening force due to the screw engagement between the container body and the outer lid is reduced, so that the outer lid may become easily loosened.

The present invention has been proposed in view of such conventional circumstances, and aims to provide a container with a lid that prevents the lid from loosening and allows the lid to be easily and safely removed. purpose.

In order to achieve the above object, the present invention provides the following means.
[1] A container body with an opening at the top;
and a lid body that opens and closes the opening,
The lid body includes an outer lid that covers the opening;
an inner lid that is fitted into the container body from the opening;
a sealing member that is attached to the outer periphery of the inner lid and seals between the container body and the inner lid;
an inner stopper located at the center of the inner side of the outer cover and fitted inside the inner cover;
a plug body located at the center of the bottom surface of the inner plug and closing a ventilation hole provided at the center of the inner lid;
The outer lid is removably attached to the container body by screwing together a male threaded portion provided on the outer periphery of the container body and a female threaded portion provided on the inner periphery of the outer lid. With,
When the inner stopper is fitted inside the inner cover, an outer engaging portion protrudes from the inner circumferential surface of the inner cover in a diametrical direction , and an outer engaging portion protrudes from the outer circumferential surface of the inner cover in a diametrically expanding direction. A container with a lid, characterized in that the inner lid rotates together with the outer lid by engagement with an inner engaging portion provided in a protruding manner.
[2] The sealing member is configured to be in close contact with a protrusion provided on the inner circumference of the container body when the inner lid is fitted into the container body from the opening. The container with a lid as described in [1] above.
[3] The container with a lid as described in [1] or [2] above, wherein the container body has a vacuum insulation structure.

As described above, according to the present invention, it is possible to provide a container with a lid that prevents the lid from loosening and allows the lid to be easily and safely removed.

FIG. 1 is an exploded perspective view of the lidded container according to the first embodiment of the present invention, viewed from above. FIG. 2 is an exploded perspective view of the lidded container shown in FIG. 1 viewed from below. FIG. 2 is a sectional view showing the structure of the lidded container shown in FIG. 1. FIG. FIG. 2 is a perspective view of the outer lid and inner stopper of the lidded container shown in FIG. 1, viewed from below. FIG. 2 is a perspective view of the inner lid of the lidded container shown in FIG. 1 viewed from above. FIG. 2 is a perspective view of the inner lid of the lidded container shown in FIG. 1 viewed from below. In the click mechanism provided in the lidded container shown in Fig. 1, the state before the inner engagement protrusion overcomes the outer engagement protrusion when the inner stopper is turned in the closing direction with respect to the inner lid is seen from above. FIG. In the click mechanism provided in the container with a lid shown in Fig. 1, the state after the inner engagement protrusion passes over the outer engagement protrusion when the inner stopper is turned in the closing direction with respect to the inner lid is seen from above. FIG. FIG. 7 is a perspective view of an outer lid and an inner stopper included in a container with a lid according to a second embodiment of the present invention, viewed from the lower side. FIG. 10 is a perspective view of the inner lid of the lidded container shown in FIG. 9 viewed from above.

Embodiments of the present invention will be described in detail below with reference to the drawings.
(First embodiment)
First, as a first embodiment of the present invention, a lidded container 1A shown in FIGS. 1 to 8, for example, will be described.
Note that FIG. 1 is an exploded perspective view of the lidded container 1A viewed from above. FIG. 2 is an exploded perspective view of the lidded container 1A viewed from below. FIG. 3 is a sectional view showing the structure of the lidded container 1A. FIG. 4 is a perspective view of the outer lid 9 and inner stopper 11 of the lidded container 1A viewed from below. FIG. 5 is a perspective view of the inner lid 10 of the lidded container 1A viewed from above. FIG. 6 is a perspective view of the inner lid 10 of the lidded container 1A viewed from below. FIG. 7 shows a state before the inner engaging protrusion 20 overcomes the outer engaging protrusion 21 when the inner stopper 11 is turned in the closing direction with respect to the inner lid 10 in the click mechanism 19 included in the lidded container 1A. FIG. FIG. 8 shows the state after the inner engaging convex portion 20 has climbed over the outer engaging convex portion 21 when the inner stopper 11 is turned in the closing direction with respect to the inner lid 10 in the click mechanism 19 included in the lidded container 1A. FIG. 3 is a horizontal sectional view of the state viewed from above.

As shown in FIGS. 1 and 2, the lidded container 1A of this embodiment includes a container body 2 and a lid 3 that opens and closes an opening 2a provided at the top of the container body 2. The lidded container 1A is a soup jar in which the ingredients (contents) accommodated in the container body 2 can be kept warm by the container body 2 having a vacuum insulation structure.

Although the lidded container 1A of this embodiment has an approximately cylindrical external shape as a whole, the external shape of the lidded container 1A is not particularly limited, and may vary depending on size, design, etc. In addition, it is possible to make changes as appropriate. Furthermore, the outer peripheral surface of the container body 2 may be painted, printed, or the like.

As shown in FIGS. 1, 2, and 3, the container body 2 includes an outer container 4 and an inner container 5 made of metal, such as stainless steel. The container main body 2 has a bottomed cylindrical inner container 5 with one end open inside an outer container 4 with a bottomed cylindrical shape with one end open, and the open ends of the container body 2 are joined to each other. It is constituted by a heat insulating container in which a vacuum heat insulating layer 6 is provided between the outer container 4 and the inner container 5.

The vacuum heat insulating layer 6 can be formed, for example, by sealing a deaeration hole provided at the center of the bottom surface of the outer container 4 with a brazing material in a chamber that is reduced in pressure to a high vacuum (evacuated).

By having such a vacuum insulation structure, the container body 2 can have functions such as heat retention and cold retention. In addition, since the container body 2 has such a vacuum insulation structure, tension is constantly applied to the outer container 4 and the inner container 5 due to the difference between the internal pressure (vacuum pressure) and the external pressure (atmospheric pressure). The mechanical strength of these outer container 4 and inner container 5 increases. Thereby, even when the outer container 4 and the inner container 5 are made thinner, the rigidity of the container body 2 can be increased, and the weight of the container body 2 can be reduced.

The container main body 2 includes a substantially circular bottom part 2b, a body part 2c that stands up in a substantially cylindrical shape from the outer periphery of the bottom part 2b, and a substantially cylindrical mouth and neck part 2d whose diameter is reduced at the upper side of the body part 2c. It has Further, the upper end portion of the mouth and neck portion 2d is opened in a circular shape as the opening portion 2a of the container body 2. Further, a male screw portion 7 is provided on the outer peripheral surface of the mouth and neck portion 2d (outer container 4). Further, a ring-shaped projecting portion 8 is provided on the inner circumferential surface between the mouth and neck portion 2d and the body portion 2c so as to protrude in the diameter reduction direction over the entire circumference.

The lid 3 includes an outer lid 9 that covers the opening 2a of the container body 2, an inner lid 10 that is fitted into the container body 2 from the opening 2a, and is attached to the outer circumference of the bottom surface of the inner lid 10. A sealing member 13 that seals between the container body 2 and the inner lid 10, an inner stopper 11 located at the center inside the outer cover 9 and fitted inside the inner cover 10, and a center part of the bottom of the inner stopper 11. The inner cover 10 has a stopper 18 located at the center of the bottom surface of the inner lid 10 to close the ventilation hole 17 .

As shown in FIGS. 1 to 4, the outer lid 9 includes a peripheral wall portion 9a made of a heat-resistant resin such as polypropylene, and formed into a substantially cylindrical shape to match the outer diameter of the body portion 2c of the container body 2; It has an upper wall part 9b that closes off the upper part of the peripheral wall part 9a.

The inner circumferential surface of the peripheral wall portion 9a (outer lid 9) is provided with a female screw portion 12 that is screwed into the male screw portion 7 on the container body 2 side described above. In the lidded container 1A, the outer lid 9 is detachably attached to the container body 2 by screwing the male threaded portion 7 and the female threaded portion 12 together.

In the lidded container 1A, by rotating the outer lid 9 clockwise (hereinafter referred to as the "closing direction") with respect to the container body 2 while screwing the male threaded part 7 and the female threaded part 12 together, It is possible to attach an outer lid 9 to the container body 2. On the other hand, from the state where the outer lid 9 is attached to the container body 2, by rotating the outer lid 9 counterclockwise (hereinafter referred to as the "opening direction") with respect to the container body 2, the male threaded part 7 and the female It is possible to release the screw engagement with the threaded portion 12 and remove the outer lid 9 from the container body 2.

As shown in FIGS. 1 to 3, 5, and 6, the inner lid 10 is made of a heat-resistant resin such as polypropylene, and has a substantially circular bottom wall 10a and a substantially cylindrical shape extending from the outer periphery of the bottom wall 10a. It has a peripheral wall portion 10b that stands upright. Further, a ring-shaped upper flange portion 10c is provided on the upper end side of the outer peripheral surface of the peripheral wall portion 10b so as to protrude in the diametrical direction over the entire circumference.

A water stop packing 13 is removably attached to the outer periphery of the bottom surface of the inner lid 10. The water stop packing 13 is a ring-shaped sealing member that seals between the container body 2 and the inner lid 10, and is made of an elastic member such as a heat-resistant rubber such as silicone rubber or an elastomer.

The inner lid 10 is provided with a ring-shaped lower flange portion 10d that protrudes from the outer periphery of the bottom wall portion 10a in the diametrical direction. The water stop packing 13 is fitted around the entire circumference of the lower flange portion 10d.

On the other hand, the water stop packing 13 can be removed from the lower flange portion 10d by elastically deforming (pulling and stretching) itself. Thereby, the inner lid 10 and the water stop packing 13 can be washed separately, and the space between the inner lid 10 and the water stop packing 13 can be kept sanitary.

Further, an elastic flange portion 13a is provided on the outer peripheral portion of the water stop packing 13. The elastic flange portion 13a has a shape that curves and protrudes downward from the upper end of the outer peripheral surface of the water stop packing 13.

When the lid body 3 is attached to the container body 2, the water stop packing 13 comes into close contact with the overhang part 8 over the entire circumference while the elastic flange part 13a is elastically deformed. Thereby, the space between the container body 2 and the inner lid 10 can be sealed by the water stop packing 13.

As shown in FIGS. 1 to 4, the inner plug 11 is made of a heat-resistant resin such as polypropylene, has a substantially cylindrical shape with a bottom, and is integrally attached to the center of the lower surface of the upper wall portion 9b by welding or the like. It is being A heat insulating material 14 made of, for example, foamed urethane resin is disposed inside the inner stopper 11 as a heat insulating layer. Furthermore, the heat insulating layer may be air (void) instead of the heat insulating material 14 described above.

As shown in FIGS. 1 to 3, 5, and 6, the inner lid 10 is provided with a circular ventilation hole 17 passing through the center of the bottom wall 10a. On the other hand, a plug body 18 that closes the ventilation hole 17 is provided at the center of the bottom surface of the inner plug 11 .

The plug body 18 is made of an elastic member such as a heat-resistant rubber such as silicone rubber or an elastomer. The plug body 18 includes a protrusion 18a whose central portion bulges out into a dome shape, a flange portion 18b extending in a diametrical direction from the periphery of the protrusion 18a, and a cylindrical portion extending from the opposite side of the protrusion 18a. It has a protruding cylindrical portion 18c and a ring-shaped groove portion 18d cutting out the outer peripheral surface of the cylindrical portion 18c.

On the other hand, the inner stopper 11 has a fitting recess 11a into which the cylindrical portion 18c is fitted in the center of the bottom surface thereof, and a fitting recess 11a which projects in the diameter reduction direction from the inner peripheral surface of the fitting recess 11a and is fitted into the groove 18d. It has a mating convex portion 11b. Thereby, the plug body 18 is detachably attached to the center of the bottom surface of the inner plug 11.

In the lid 3, when the lid 3 is attached to the container body 2, the projection 18a of the plug 18 is elastically deformed and comes into contact with the periphery of the ventilation hole 17, thereby closing the ventilation hole 17. It is now possible to do so. In addition, in the lid body 3, since the stopper 18 can be removed from the inner stopper 11 and washed separately, the space between the inner stopper 11 and the stopper 18 can be kept sanitary. It is possible.

As shown in FIGS. 1, 2, and 4 to 8, the lid 3 has a click mechanism 19 that provides a click feeling while the above-mentioned male threaded portion 7 and female threaded portion 12 are completely screwed together. We are prepared.

The click mechanism 19 has an inner engagement protrusion 20 provided on the inner stopper 11, and an outer engagement protrusion 21 and a stopper protrusion 22 provided on the inner lid 10.

The inner engaging protrusions 20 are provided so as to protrude in the diametrical direction while extending in the vertical direction from opposing positions on the outer circumferential surface of the inner stopper 11 .

The outer engagement convex portion 21 is provided on the tip side of a pair of elastic pieces 23 provided on the peripheral wall portion 10b of the inner lid 10. The pair of elastic pieces 23 are provided continuously with the peripheral wall portion 10b at opposing positions on the peripheral wall portion 10b. Specifically, each elastic piece 23 is provided so as to extend upward from between the slits 24 that cut out the periphery thereof. Thereby, the tip (upper end) side of the elastic piece 23 can be elastically deformed in the diametrical direction.

The outer engagement convex portion 21 is provided so as to protrude from the inner circumferential surface of the elastic piece 23 on the tip (upper end) side in the diameter reduction direction. Further, the outer engagement convex portion 21 has an inclined surface 21a whose slope gradually increases toward the side where the inner stopper 11 is turned in the closing direction with respect to the inner lid 10.

The stopper convex portions 22 are provided so as to protrude in the diameter reduction direction while extending in the vertical direction from relative (opposing) positions on the inner circumferential surface of the peripheral wall portion 10b (inner lid 10). Further, the stopper convex portion 22 is provided adjacent to the side of the inner lid 10 of the elastic piece 23 on which the inner stopper 11 is turned in the closing direction.

In the click mechanism 19, as shown in FIG. 7, by turning the outer lid 9 in the closing direction (clockwise direction in the figure) with respect to the container body 2, the inner stopper 11 is rotated in the closing direction with respect to the inner lid 10. It will rotate. At this time, the inner engaging convex portion 20 makes sliding contact with the inclined surface 21a of the outer engaging convex portion 21, and elastically deforms the elastic piece 23 in the radially expanding direction. As shown in FIG. 8, the inner engagement protrusion 20 rides over the outer engagement protrusion 21, so that the inner engagement protrusion 20 engages between the outer engagement protrusion 21 and the stopper protrusion 22. It will be in a combined state.

In the click mechanism 19, a click feeling can be obtained when the inner engagement protrusion 20 overcomes the outer engagement protrusion 21. The strength of the click feeling in the click mechanism 19 can be adjusted by adjusting the shape, surface condition, material, etc. of the inner engagement protrusion 20, outer engagement protrusion 21, and elastic piece 23. On the other hand, it is also possible not to produce a click feeling at all. Further, the elastic piece 23 is not limited to a configuration in which it extends upward from between the slits 24 cut out around the elastic piece 23, but is, for example, provided so that it can be elastically deformed between a pair of slits 24 that are parallel to each other. The configuration may be Furthermore, in the case of this configuration, the outer engaging convex portion 21 may be provided in the center of the elastic piece.

After feeling a click, by further rotating the outer lid 9 in the closing direction relative to the container body 2, the inner lid 10 closes to the outer lid with the stopper projection 22 in contact with the inner engagement projection 20. Rotates in the closing direction together with 9. Thereby, the lid 3 can be attached to the container body 2.

Here, even if the center of the inner lid 10 is attached to a position slightly shifted from the center of the container body 2, as the inner lid 10 rotates together with the outer lid 9 in the closing direction, the shape of the mortar will gradually change. The inner cover 10 is guided so as to follow the shape of the overhang 8 formed in the inner cover 10, and the inner cover 10 moves in the direction in which the central axes match. As a result, the central axes of the container body 2 and the inner lid 10 are aligned, so that the water-stop packing 13 is in close contact with the overhang portion 8 evenly over the entire circumference, and good water-stop performance can be achieved. .

On the other hand, the click mechanism 19 rotates the outer lid 9 in the opening direction (counterclockwise direction in the figure) with respect to the container body 2 from the state where the lid 3 is attached to the container body 2, as shown in FIG. As a result, the inner plug 11 rotates in the opening direction with respect to the inner lid 10. At this time, as shown in FIG. 7, while elastically deforming the elastic piece 23 in the diametrically expanding direction, the inner engaging convex portion 20 rides over the outer engaging convex portion 21, thereby causing the inner engaging convex portion 20 and the outer engaging convex portion 20 to move over each other. The engagement with the mating convex portion 21 is released.

In the click mechanism 19, depending on the direction of the slope of the inclined surface 21a described above, the inner engagement protrusion 20 crosses the outer engagement protrusion 21 in the opening direction than the inner engagement protrusion 20 in the closing direction. 20 has a high resistance when it gets over the outer engaging protrusion 21. This prevents the outer lid 9 from unintentionally loosening with respect to the container body 2 when the lid 3 is attached to the container body 2.

Note that the click mechanism 19 of this embodiment is configured to provide a click feeling when the inner engagement protrusion 20 passes over the outer engagement protrusion 21 provided with the above-mentioned inclined surface 21a. On the contrary, a configuration may be adopted in which a click feeling is provided when the outer engagement protrusion 21 passes over the inner engagement protrusion 20 provided with the inclined surface.

In the lidded container 1A of this embodiment having the above configuration, after the inner lid 10 is fitted inside the container body 2 from the opening 2a, the inner stopper 11 is fitted inside the inner lid 10. shall be. From this state, by turning the outer cover 9 in the closing direction, the male threaded portion 7 and the female threaded portion 12 are screwed together.

Thereby, it is possible to attach the lid 3 to the container body 2. Further, at this time, the plug 18 is brought into contact with the periphery of the vent hole 17, so that the vent hole 17 is in a sealed (closed) state. Further, the water stop packing 13 is in close contact with the overhang portion 8 over the entire circumference, so that the space between the container body 2 and the inner lid 10 is sealed by the water stop packing 13.

On the other hand, when the lid 3 is attached to the container body 2, by turning the outer lid 9 in the opening direction, the inner stopper 11 rotates together with the outer lid 9 in the opening direction relative to the inner lid 10, and the male The threaded engagement between the threaded portion 7 and the female threaded portion 12 begins to be released.

At this time, the plug 18 is released from contact with the periphery of the vent hole 17, so that the vent hole 17 is in an open state. As a result, the pressure inside the container body 2 is released through the vent hole 17, so that the pressure inside the container body 2 becomes the same pressure as the outside (atmospheric pressure).

From this state, by further turning the outer cover 9 in the opening direction, the inner cover is brought into contact with the stopper protrusion 22 against the inner engagement protrusion 20 from the opposite side to when the outer cover 9 is turned in the closing direction. 10 rotates together with the outer lid 9 in the opening direction, the close contact state of the water stop packing 13 to the projecting portion 8 is released. Further, by completely unscrewing the female threaded portion 7 and the male threaded portion 12, the lid 3 becomes removable from the container body 2.

Furthermore, even if the water seal seal makes strong contact between the water stop packing 13 and the overhang 8, the inner cover 10 rotates together with the outer cover 9 in the opening direction. It is possible to remove the lid 3 from the container body 2 by releasing the water seal between them.

As described above, in the lidded container 1A of the present embodiment, the above-described click mechanism 19 can provide a click feeling while the screwing of the male threaded portion 7 and the female threaded portion 12 is completed. be. Furthermore, the click mechanism 19 described above can prevent the outer lid 9 from unintentionally loosening with respect to the container body 2 when the lid 3 is attached to the container body 2.

In addition, in the lidded container 1A of the present embodiment, by turning the outer lid 9 in the opening direction from the state where the lid 3 is attached to the container body 2 described above, the ventilation hole 17 is opened, and then the inner With the stopper convex portion 22 in contact with the mating convex portion 20, the inner cover 10 rotates together with the outer cover 9 in the opening direction, and the close contact state of the water stop packing 13 to the overhang portion 8 is released.

As a result, even if the inner lid 10 is pulled toward the inside of the container body 2 due to a drop in pressure within the container body 2, the threaded engagement between the male threaded portion 7 and the female threaded portion 12 can be easily released, and the inner lid 10 can be easily removed from the container body 2. It is possible to remove the lid body 3.

Therefore, in the lidded container 1A of this embodiment, even if the pressure inside the container body 2 decreases, the lid 3 can be easily and safely removed.

Incidentally, examples of cases where the pressure inside the container body 2 decreases (become negative pressure) include, for example, when high-temperature contents are put inside the container body 2 and then the contents cool down. can.

(Second embodiment)
Next, as a second embodiment of the present invention, a lidded container 1B shown in FIGS. 9 and 10, for example, will be described.
Note that FIG. 9 is a perspective view of the outer lid 9 and the inner stopper 11 of the lidded container 1B, viewed from the lower side. FIG. 10 is a perspective view of the inner lid 10 of the lidded container 1A viewed from above. Furthermore, in the following description, the description of parts equivalent to those of the lidded container 1A will be omitted, and the same reference numerals will be given in the drawings.

In the lidded container 1B of the present embodiment, the lid body 3 has, as shown in FIGS. 9 and 10, an inner stopper 11 fitted inside the inner lid 10 instead of the click mechanism 19 described above. An accompanying rotation mechanism in which the inner lid 10 rotates integrally with the outer lid 9 when the outer engaging portion 26 provided on the inner lid 10 and the inner engaging portion 27 provided on the inner stopper 11 are engaged with each other. It is equipped with 28.

Specifically, the outer engaging portion 26 has an uneven structure in which a plurality of mountain-like protrusions 26a and a plurality of valley-like recesses 26b are alternately arranged in the circumferential direction on the inner peripheral surface of the inner lid 10 (peripheral wall portion 10b). have. Similarly, the inner engaging portion 27 has an uneven structure in which a plurality of mountain-like protrusions 27a and a plurality of valley-like recesses 27b are arranged alternately in the circumferential direction on the outer peripheral surface of the inner stopper 11.

In the entraining mechanism 28, the mountain-like convex portion 26a on the outer engaging portion 26 side and the valley-like recess 27b on the inner engaging portion 27 side are respectively engaged, and the valley-like recess 26b on the outer engaging portion 26 side and the inner side are engaged with each other. The inner stopper 11 is fitted inside the inner lid 10 by engaging with the mountain-like protrusions 27a on the engaging portion 27 side.

Furthermore, the outer engaging portion 26 and the inner engaging portion 27 each have an uneven structure in which a plurality of convex portions 26a, 27a and a plurality of concave portions 26b, 27b are arranged alternately in the circumferential direction. , it is possible to engage these outer engaging portions 26 and inner engaging portions 27 no matter where the inner stopper 11 is located in the circumferential direction with respect to the inner lid 10.

Further, when the inner cap 11 is fitted inside the inner cap 10, the inner cap 10 rotates around the axis relative to the inner cap 11 due to the engagement between the outer engaging portion 26 and the inner engaging portion 27. It regulates things. As a result, in the entrainment mechanism 28, when the outer cover 9 is turned in the closing direction or the opening direction with respect to the container body 2 with the inner stopper 11 fitted inside the inner cover 10, the inner cover 10 is rotated. It will rotate together with the outer cover 9.

In the lidded container 1B of this embodiment having the above-described configuration, after the inner lid 10 is fitted inside the container body 2 from the opening 2a, the inner stopper 11 is fitted inside the inner lid 10. shall be. From this state, by turning the outer cover 9 in the closing direction, the male threaded portion 7 and the female threaded portion 12 are screwed together.

Thereby, it is possible to attach the lid 3 to the container body 2. Further, at this time, the plug 18 is brought into contact with the periphery of the vent hole 17, so that the vent hole 17 is in a sealed (closed) state. Further, the water stop packing 13 is in close contact with the overhang portion 8 over the entire circumference, so that the space between the container body 2 and the inner lid 10 is sealed by the water stop packing 13.

Here, even if the center of the inner lid 10 is attached to a position slightly shifted from the center of the container body 2, as the inner lid 10 rotates together with the outer lid 9 in the closing direction, the shape of the mortar will gradually change. The inner cover 10 is guided so as to follow the shape of the overhang 8 formed in the inner cover 10, and the inner cover 10 moves in the direction in which the central axes match. As a result, the central axes of the container body 2 and the inner lid 10 are aligned, so that the water-stop packing 13 is in close contact with the overhang portion 8 evenly over the entire circumference, and good water-stop performance can be achieved. .

In addition, in the lidded container 1B of the present embodiment, the above-mentioned entrainment mechanism 28 prevents the outer lid 9 from unintentionally loosening with respect to the container body 2 when the lid 3 is attached to the container body 2. It is prevented.

On the other hand, by rotating the outer cover 9 in the opening direction from the state where the lid 3 is attached to the container body 2, the inner cover 10 rotates in the opening direction together with the outer cover 9 by the above-mentioned co-rotation mechanism 28. The threaded engagement between the male threaded portion 7 and the female threaded portion 12 is released.

At this time, the plug 18 is released from contact with the periphery of the vent hole 17, so that the vent hole 17 is in an open state. As a result, the pressure inside the container body 2 is released through the vent hole 17, so that the pressure inside the container body 2 becomes the same pressure as the outside (atmospheric pressure).

From this state, by further rotating the outer cover 9 in the opening direction, the inner cover 10 rotates together with the outer cover 9 in the opening direction by the above-mentioned entrainment mechanism 28, and the water stop packing 13 against the overhang 8 is rotated. The close contact state of is released. Further, by completely unscrewing the female threaded portion 7 and the male threaded portion 12, the lid 3 becomes removable from the container body 2.

As described above, in the lidded container 1B of the present embodiment, by rotating the outer lid 9 in the opening direction from the state where the lid 3 is attached to the container body 2 described above, the inner lid 10 is rotated by the entrainment mechanism 28. After the ventilation hole 17 is opened while rotating together with the outer lid 9 in the opening direction, the close contact state of the water stop packing 13 to the overhang part 8 is released.

As a result, the screwing between the male threaded part 7 and the female threaded part 12 is released, and the inner lid 9 is not pulled inside the container main body 2 due to a pressure drop inside the container main body 2, and the lid is removed from the container main body 2. It is possible to remove the body 3.

Therefore, in the lidded container 1B of this embodiment, even if the pressure inside the container body 2 decreases, the lid 3 can be easily and safely removed.

Note that the present invention is not necessarily limited to the embodiments described above, and various changes can be made without departing from the spirit of the present invention.
For example, in the lidded containers 1A and 1B, the ventilation hole 17 provided in the inner lid 10 is closed by the plug 18 attached to the inner plug 11 described above, but the ventilation hole is not provided. It is also possible to provide a configuration in which the ventilation hole is closed by attaching an elastic member to the inner lid 10 and bringing a protrusion provided on the inner plug 11 that serves as a plug into contact with the elastic member.

Further, in the lidded container 1B, the outer engaging portion 26 and the inner engaging portion 27 each have a plurality of mountain-like protrusions 26a, 27a and a plurality of valley-like recesses 26b, 27b arranged alternately in the circumferential direction. However, it is not necessarily limited to such a configuration.

For example, the outer engaging portion 26 and the inner engaging portion 27 may be configured by the stopper convex portion 22 and the inner engaging convex portion 20 provided in the lidded container 1A. In this case, it is also possible to provide a plurality of stopper protrusions 22 and inner engaging protrusions 20. Further, the number of stopper protrusions 22 and inner engagement protrusions 20 need not necessarily be the same, and for example, six stopper protrusions 22 and five inner engagement protrusions 20 may be provided. is also possible.

Note that the present invention can be suitably applied to a container with a lid that has a heat-retaining/cold-retaining function with a container body having the above-mentioned vacuum insulation structure. The present invention can be widely applied to containers with lids that include a lid body.

1A, 1B...Container with lid 2...Container body 2a...Opening part 3...Lid body 7...Male thread part 8...Protruding part 9...Outer lid 10...Inner lid 11...Inner stopper 12...Female thread part 13...Water stop Packing (sealing member) 18... Plug body 19... Click mechanism 20... Inner engaging convex portion 21... Outer engaging convex portion 22... Stopper convex portion 23... Elastic piece 26... Outer engaging portion 27... Inner engaging portion 28... Entraining mechanism

Claims (3)

a container body with an opening at the top;
and a lid body that opens and closes the opening,
The lid body includes an outer lid that covers the opening;
an inner lid that is fitted into the container body from the opening;
a sealing member that is attached to the outer periphery of the inner lid and seals between the container body and the inner lid;
an inner stopper located at the center of the inner side of the outer cover and fitted inside the inner cover;
a plug body located at the center of the bottom surface of the inner plug and closing a ventilation hole provided at the center of the inner lid;
The outer lid is removably attached to the container body by screwing together a male threaded portion provided on the outer periphery of the container body and a female threaded portion provided on the inner periphery of the outer lid. With,
When the inner stopper is fitted inside the inner cover, an outer engaging portion protrudes from the inner circumferential surface of the inner cover in a diametrical direction , and an outer engaging portion protrudes from the outer circumferential surface of the inner cover in a diametrically expanding direction. A container with a lid, characterized in that the inner lid rotates together with the outer lid by engagement with an inner engaging portion provided in a protruding manner. The sealing member is characterized in that when the inner lid is fitted into the container body from the opening, the seal member is in close contact with a protrusion provided on the inner circumference of the container body. A container with a lid according to claim 1. The lidded container according to claim 1 or 2, wherein the container body has a vacuum insulation structure.

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