JP5544545B2 - Container stoppers and beverage containers - Google Patents

Description

  The present invention relates to a container stopper plug that can be attached to and detached from a container, and a beverage container having the same.

  2. Description of the Related Art Conventionally, as a container plug for a beverage container, a screw main body having a screw part that can be screwed to and removed from a container, a plug cover that covers the container from the axial direction, and an inner plug that is recessed from the plug cover in the axial direction; A plug cap that detachably covers the recessed space of the inner plug, and the inner plug has a packing that is fitted to the outer periphery, and the plug cap and the inner plug form a heat insulating chamber, and the plug body is formed by the screw portion. In some cases, the packing is interposed between the inner periphery of the container and the outer periphery of the inner stopper while being fixed to the container. In order to detachably fix the stopper main body to the container with the screw portion of the stopper cover, the inner stopper and the stopper cover are integrated by fusion, forced fitting or the like. The container is provided with an external thread or an internal thread for attaching and detaching the container cap. The threaded portion of the container plug is provided on the outer periphery of the inner stopper when the container has an inner screw, and is provided on the inner periphery of the stopper cover when the container has an outer screw (Patent Document 1).

JP-A-10-272068

  This type of container stopper has a stopper cover that covers the outer periphery of the container from the axial direction, and an inner stopper that is recessed from the stopper cover in the axial direction, so that it is formed between the inner periphery of the stopper cover and the outer periphery of the inner stopper. The mouth of the container is inserted in the gap in the axial direction. When a beverage is taken out from the mouth portion of the container or a beverage is ingested by putting lips on the outer periphery of the container, the beverage adheres to the inner periphery or outer periphery of the mouth portion of the container. The beverage may adhere to the inner periphery of the stopper cover or the outer periphery of the inner stopper within the gap. The gap between the inner periphery of the stopper cover and the outer periphery of the inner stopper is preferably as small as possible in consideration of heat insulation, and the width is narrow.

  However, there is a problem that it is difficult to clean the beverage adhering in the gap.

  Moreover, when cleaning the container stopper, it may be removed from the inner stopper in order to wash the packing. In order to make it easier to remove the packing, a packing support portion is provided on the outer periphery of the inner plug protruding in the axial direction from the plug cover, and the packing is fitted therein.

  However, when the packing support portion is provided so as to protrude in the axial direction from the stopper cover, the seal position where the packing contacts the sealing surface on the inner periphery of the container is set on the inner side of the container in the axial direction. This narrows the capacity of the container in the axial direction, and there is a problem of hindering the compactness of the container.

  Accordingly, an object of the present invention is to make the container compact while improving the cleanability in the gap between the inner periphery of the stopper cover and the outer periphery of the inner stopper.

In order to solve the above-mentioned problems, the present invention includes a screw portion that is detachable from a container, a plug cover that covers the container from the axial direction, and a plug body that has an inner plug recessed in the axial direction from the plug cover; A plug cap that detachably covers the inner plug, and the plug cap and the inner plug form a heat insulating chamber, and the inner plug has a packing fitted to the outer periphery thereof, It can be screwed into the container, and the mouth portion of the container is inserted in the gap formed between the inner periphery of the stopper cover and the outer periphery of the inner stopper, and the stopper main body is inserted by the screw portion. In the container plug in which the packing is interposed between the inner periphery of the container and the outer periphery of the inner plug while being fixed to the container, the screw portion is provided on the inner periphery of the plug cover. The packing is threaded on the threaded portion of the outer periphery of the inner plug. The inner plug and the plug cover are detachably locked at a position closer to the axial plug cap than the packing support portion. Adopted. The “axial direction” refers to a direction along the axis of the threaded portion. Out of the circumferences that are continuous in the circumferential direction around the center in the axial direction and are duplicated at the same axial position, the inner circumference is called the “inner circumference” and the outer circumference is called the “outer circumference”. .

When the screw part of the container plug is provided on the inner periphery of the stopper cover, it is not necessary to provide a screw part on the outer periphery of the inner plug as in Patent Document 1, and the packing support part is the screw part of the outer periphery of the inner plug Can be provided from the position facing the screw radial direction. As a result, the seal position of the packing can be brought closer to the stopper cap side, so that a large capacity can be secured in the axial direction within the container. As a result, even if the same capacity is secured, the container can be made compact.
The inner plug and the plug cover can be detachably locked at the axial plug cap side of the packing support, so when cleaning the gap between the inner periphery of the plug cover and the outer periphery of the inner plug, remove the inner plug. It can be removed from the stopper cover to improve cleanability. In addition, since the packing can be attached to and detached from the packing support portion with the inner plug removed, even if the packing support portion is provided from the outer periphery of the inner plug so as to face the screw portion in the screw radial direction, the packing support portion can be removed. There is no worry that it will be difficult to put on and take off.

  For example, the inner plug has locking claws protruding toward the axial plug cap side from its inner and outer circumferences at a plurality of circumferential positions, and the plug cover has a claw receiving portion that engages with the locking claws. And, the locking claw of the inner plug hits the claw receiving portion in the axial direction and elastically tilts to overcome the claw receiving portion and elastically recovers to reach a position where they are engaged with each other in the axial direction. The plug cap can be configured to limit the inclination of the locking claw to a range that does not come off from the claw receiving portion when the plug cap is mounted on the plug body.

  As the structure for detachably locking the inner plug and the plug cover, the above-described locking claw and claw receiving portion can be employed. The detachable stopper cap can be provided so as to limit the inclination of the locking claw to a range where it cannot be removed from the nail receiving portion in a state where it is attached to the stopper body. In this way, even if the inner plug is accidentally tilted to the side corresponding to the inclination direction of the locking claw with respect to the axial direction, the plug cap can be removed from the claw receiving portion. It can be prevented by using it.

  Preferably, the plug cap has a cylindrical portion inserted to the inner periphery of the inner plug, and a cap packing fitted to the outer periphery of the cylindrical portion, and the recessed space of the inner plug is detachable. A heat insulating chamber is formed by the cap cap and the inner plug covering, and the cap packing seals between an inner periphery of the inner plug and an outer periphery of the cylindrical portion, and the cylindrical portion is inclined of the locking claw. It is good to limit.

  Since the plug cap that detachably covers the recessed space of the inner plug has a cylindrical portion that is inserted into the inner periphery of the inner plug, the heat insulating chamber can be formed by the plug cap and the inner plug. If the gap between the inner periphery of the inner plug and the outer periphery of the tube portion is sealed with a cap packing fitted to the outer periphery of the tube portion, the locking claw protruding from the inner periphery of the tube plug toward the axial plug cap side Even if the inclination is limited by the cylinder portion, there is no concern that the beverage will be submerged in the heat insulation chamber. Since the inclination of the locking claw can be restricted by utilizing the cylindrical portion for forming the heat insulation chamber, it is not necessary to add a dedicated wall for the inclination restriction to the stopper cap.

  If the container plug according to the present invention is employed, for example, the container is composed of a double heat insulating container in which an inner container and an outer container are joined, and the minimum inner diameter portion of the inner container is equal to or more than the shoulder portion of the outer container. The outer container is present at a position close to the axial stopper cap side, and the outer container has an outer screw that is screwed into the threaded portion, and the stopper cover is fixed to the container, and the stopper cover is fixed to the outer container. A beverage container can be configured in which the packing is supported by the shoulder portion of the container in the axial direction and the packing is interposed between the minimum inner diameter portion of the inner container.

  As described above, the container cap according to the present invention can bring the seal position of the packing that seals between the inner periphery of the container and the outer periphery of the inner plug toward the stopper cap, so that the minimum inner diameter portion of the inner container Is provided so as to be present at a position closer to the axial stopper cap side than the shoulder portion of the outer container. Conventionally, since the minimum inner diameter part of the inner container is located closer to the bottom side than the shoulder part of the outer container as in Patent Document 1, compared with this, the outer container is lengthened in the axial direction. However, the inner diameter of the inner container can be brought closer to the stopper cap side, and the capacity of the inner container can be secured widely in the axial direction. Therefore, even if the same capacity is ensured, the bottom of the inner container can be raised, so that the container can be made compact.

  As described above, according to the present invention, by adopting the above configuration, it is not necessary to provide a threaded portion on the outer periphery of the inner plug, and the seal position of the packing can be brought closer to the plug cap side, so that the container can be made compact. When cleaning the gap between the inner periphery of the stopper cover and the outer periphery of the inner stopper, the inner stopper can be removed from the stopper cover to improve cleanability. Since the packing can be removed, there is no need to worry about making this task difficult.

(A) is a principal part longitudinal cross-sectional view which shows the whole structure of the drink container which concerns on 1st embodiment of this invention in the cross section of the Ia-Ia line of FIG. 2, (b) is the Ib-Ib line of FIG. Main section vertical section The principal part disassembled perspective view of the drink container which concerns on 1st embodiment. The exploded perspective view of the container stopper concerning a first embodiment Exploded perspective view of the plug cover according to the first embodiment The perspective view which shows the stopper cap which concerns on 1st embodiment from an inner surface side The principal part longitudinal cross-sectional view which shows the whole structure of the drink container which concerns on 2nd embodiment of this invention by the same cross section as FIG. The disassembled perspective view of the container stopper concerning 2nd embodiment (A) is the principal part side view which shows the state match | combined with the preparation position which joins the inside stopper and stopper cover which concern on 2nd embodiment to a bayonet coupling, (b) is a bayonet coupling | bonding from the said (a) state. The principal part side view which shows the state which finished, (c) is the principal part side view which shows the vicinity of the bayonet coupling | bonding structure of the state which attached the stopper cap in the assembly state.

  Hereinafter, a first embodiment according to the present invention will be described with reference to the accompanying drawings. As shown in FIGS. 1 to 3, the first embodiment is a beverage container having a container 1, a mouthpiece member 2 that is attached to and detached from the inner periphery of the mouth of the container 1 in the axial direction, and a container stopper. Yes. The container mouth plug includes a plug body 3 having a threaded portion 31 that can be screwed on and removed from the container 1, a plug cover 32 that covers the container 1 from the axial direction, and an inner plug 33 that is recessed from the plug cover 32 in the axial direction. And a cap cap 4 that detachably covers the recessed space of the plug 33. The inner plug 33 has a packing 34 fitted to the outer periphery. The heat insulating chamber 5 is formed by the stopper cap 4 and the inner stopper 33. A packing 34 is interposed between the inner periphery of the container 1 and the outer periphery of the inner plug 33 in a state where the plug body 3 is fixed to the container 1 by the screw portion 31.

  The container 1 is a double insulated container in which an inner container 11 and an outer container 12 are joined. The container 1 consists of a vacuum double container, for example. The container 1 has a container opening opened to the upper surface. The inner container 11 and the outer container 12 are each made of a stainless steel thin plate, and a shoulder portion and a neck portion are formed by narrowing the periphery. As is clear from the drawing, the minimum inner diameter portion 11a formed on the neck portion of the inner container 11 is present at a position closer to the axial plug cap side than the shoulder portion of the outer container 12. The outer container 12 has an outer screw 12 a that is screwed into the screw portion 31. With the stopper body 3 fixed to the container 1, the stopper cover 32 is axially supported by the shoulder of the outer container 12, and the packing 34 is interposed between the inner diameter part 11 a of the inner container 11. The drinking mouth member 2 can be omitted.

  The screw portion 31 is formed of a screw shaft portion that is screwed into the container 1. Along with the provision of the outer screw 12 a on the container 1, the screw portion 31 is provided on the inner periphery of the stopper cover 32. The axial direction is a vertical direction with respect to the horizontal. In the drawing, the one-dot chain line in the vertical direction indicates the axis of the screw portion 31, that is, the axial direction. The screw diameter direction is a horizontal direction. In the drawing, the alternate long and short dash line indicates the screw radial direction.

  As shown in FIGS. 1 and 4, the plug cover 32 covers a cover main body 35 having a threaded portion 31 formed on the inner periphery, a decorative plate 36 covering the upper portion of the cover main body 35 from the axial direction, and the decorative plate 36. The holding member 37 is sandwiched and fixed together with the main body 35. The cover main body 35 and the pressing member 37 are each injection-molded. The decorative board 36 has a metal surface. The decorative plate 36 is positioned on the screw radial direction and axial packing 34 side by overlapping with the cover main body 35. The pressing member 37 can be covered from the axial direction on the inner periphery and the inner periphery of the upper surface of the decorative plate 36 that is overlaid on the cover body 35. The pressing member 37 has claw portions 37a protruding from a plurality of locations in the circumferential direction toward the axial packing 34 side. While the claw portions 37a are covered from the axial direction as described above, the claw portions 37a are elastically inclined by contact with the inner peripheral edge of the cover main body 35 to overcome the inner peripheral edge and elastically recover, thereby engaging each other in the axial direction. Reach position. The cover main body 35, the decorative plate 36, and the pressing member 37 are integrally coupled by engaging the claw portions 37a with the cover main body 35 at a plurality of locations in the circumferential direction.

  As shown in FIGS. 1 and 3, the inner plug 33 has an inner and outer periphery that is recessed from the stopper cover 32 toward the axial packing 34, and is formed of a single member that opens the recessed space in the axial direction. A packing support portion 33a to which the packing 34 can be fitted from the axial direction is provided on the outer periphery of the inner plug 33 at a location facing the screw portion 31 in the screw radial direction. When the plug body 3 is screwed into the container 1, the packing support portion 33 a limits the range in which the packing 34 moves in the axial direction with respect to the outer periphery of the inner plug 33 within a normal range. The normal range is a range in which a space between the inner plug 33 and the inner periphery of the inner container 11 can be secured in a watertight manner. The axially intermediate region of the cylindrical surface formed on the outer periphery of the packing 34 is pushed into the minimum inner diameter portion 11a of the inner container 11, and within a range in which a water-tight sealed state can be secured by close contact based on these tightening margins. It has become.

  The packing support portion 33a has a lower ridge portion in the drawing and an upper ridge portion in the drawing extending in the circumferential direction. The packing 34 has a fitting portion that is U-shaped in cross section and is continuous in the circumferential direction. The displacement of the packing 34 toward the axial packing side is limited by pushing the fitting portion of the packing 34 into the lower ridge portion of the packing support portion 33a in the figure. The axial packing side corresponds to the lower side in the figure. The displacement of the packing 34 in the upper side in the figure is limited by the support of the packing support part 33a by the upper protrusion in the figure.

  As shown in FIGS. 1 and 2, the inner plug 33 and the plug cover 32 are detachably locked at a position closer to the axial plug cap than the packing support portion 33 a. The axial stopper cap side corresponds to the upper side in the figure.

  Specifically, the inner plug 33 has locking claws 33b that protrude from the inner and outer circumferences toward the axial plug cap side at a plurality of locations in the circumferential direction. The stopper cover 32 has a claw receiving portion 37b that engages with the locking claw 33b. A claw receiving portion 37 b is provided on the pressing member 37. The locking claws 33b of the inner plug 33 are elastically inclined by striking in the axial direction with respect to the claw receiving portions 37b corresponding to the circumferential direction so as to overcome the claw receiving portions 37b and elastically recover from each other. Reach the position where The inner plug 33 and the plug cover 32 are integrally coupled by engaging the locking claws 33b and the claw receiving portions 37b at a plurality of positions in the circumferential direction.

The inner plug 33 has an outer periphery including the packing support portion 33a, a locking claw 33b, and an abutting wall 33d that protrudes toward the axial plug cap side from its inner and outer periphery with gaps 33c on both sides in the circumferential direction of the locking claw 33b. And have. The abutting wall 33d abuts against the stopper cover 32 in the axial direction in a state where the inner stopper 33 is locked to the stopper cover 32. Due to this contact, the inner plug 33 is positioned so that it cannot be displaced toward the axial plug cap side with respect to the plug cover 32. In addition, an axial clearance for allowing the locking claw 33b to tilt is secured between the locking claw 33b and the stopper cover 32. The locking claws 33b are provided as a pair in the screw radial direction. For this reason, it is easy to push all the locking claws 33b and force them to tilt in the above-described tilting direction and release the engagement by pinching the two locking claws 33b with fingers. After the release, the inner plug 33 and the plug cover 32 can be separated in the axial direction as they are.

  Positioning in the circumferential direction between the inner plug 33 and the plug cover 32 is based on circumferential engagement between the restriction walls 37c formed on both sides in the circumferential direction of the claw receiving portion 37b and the locking claw 33b. In order to cope with the inner and outer peripheries of the heat insulating chamber 5 and the container 1 being formed in a circular shape, the inner plug 33 and the plug cover 32 are also required to be provided on the inner and outer peripheral surfaces as a whole. Since the circumferential positioning by the respective locking claws 33b and the regulating wall 37c is obtained, the inner plug 33 can be connected to the plug cover 32 without providing another circumferential positioning structure between the inner plug 33 and the plug cover 32. It can be prevented from rotating in the circumferential direction.

  As shown in FIGS. 1 and 5, the stopper cap 4 has a cylindrical portion 41 that is inserted to the inner periphery of the inner stopper 33 and a cap packing 42 that is fitted to the outer periphery of the cylindrical portion 41. The cap packing 42 seals between the inner periphery of the inner plug 33 and the outer periphery of the cylindrical portion 41. The top surface of the stopper cap 4 is formed along a plane orthogonal to the axial direction. The claw receiving portion 37b is provided with the abutting wall 33d so that the top surface forming wall 43 of the plug cap 4 does not have to be partially or entirely expanded outward in the axial direction in order to provide the claw receiving portion 37b of the plug cover 32. The stopper cover 32 is provided so as to be recessed toward the axial packing side from the abutting position of the stopper cover 32.

  The stopper cap 4 can be put on the stopper body 3 from the axial direction in a state where the stopper cover 32 and the inner stopper 33 are coupled as described above and the stopper body 3 is assembled. The fixing force of the stopper cap 4 to the stopper body 3 is based on the close contact between the cap packing 42 and the inner periphery of the inner stopper 33. The heat insulating chamber 5 is formed by the cylindrical portion 41 of the cap cap 4, the cap packing 42 and the top surface forming wall 43 covering the recessed space of the inner plug 33, and the inner plug 33. To obtain the capacity of the heat insulating chamber 5 by making use of the recessed depth of the inner plug 33, so as not to become lower than the seal position (minimum inner diameter portion 11 a) of the packing 34, The deepest bottom portion of the heat insulation chamber 5 is formed on the axial plug cap side of the seal position of the packing 34 and lower than the screw thread start end located on the axial plug cap side of the screw portion 31. ing. Further, in order to obtain the capacity of the heat insulating chamber 5, the portion of the top surface forming wall 43 that becomes the ceiling of the heat insulating chamber 5 is formed higher in the axial direction than the plug cover 32. Since the cap packing 42 is sealed, even if the locking claw 33 b is formed by the gap 33 c of the inner plug 33, there is no fear that water will enter the heat insulating chamber 5 from the gap 33 c. It should be noted that water droplets adhering at the time of cleaning and residual droplets adhering to the cap cap 4 side from the packing 34 at the time of beverage intake can reach between the top surface forming wall 43 of the cap cap 4 and the plug cover 32 from the gap 33c. It can happen. For this reason, the outer periphery of the cylinder part 41 of the stopper cap 4 and the space between the top surface forming wall 43 and the stopper cover 32 are secured to the outside over the entire periphery. For this reason, these water droplets etc. can be drained outside by shaking a container stopper appropriately.

  The plug cap 4 that is detachable from the plug body 3 can be provided with an inclination limiting portion 44 that is inserted from the axial direction into a space for allowing the locking claw 33b to be inclined. The inclination limiting part 44 of the stopper cap 4 limits the inclination of the locking claw 33b to a range that does not come off from the claw receiving part 37b while being attached to the stopper main body 3. Therefore, even if the inner plug 33 is accidentally forcibly tilted toward the side corresponding to the inclination direction of the locking claw 33b with respect to the axial direction and the locking claw 33b is pressed against the claw receiving portion 37b, the locking claw The stopper cap 4 can be used to prevent 33b from coming off from the claw receiving portion 37b.

  Specifically, the tilt limiting portion 44 is provided by using a cylindrical portion 41 that is an insertion portion inside the inner plug 33. The inclination limiting portion 44 of the cylinder portion 41 can limit the inclination of the locking claw 33 b from the inside of the inner plug 33. By using the cylindrical portion 41, it is possible to avoid complication of the wall surface structure of the stopper cap 4 as compared with the case where the dedicated inclination limiting portion is protruded away from the cylindrical portion 41. The tilt limiting portion 44 partially protrudes in the screw radial direction on the outer periphery of the cylindrical portion 41. The reason that the tilt limiting portion 44 is partially protruded like a rib is simply to avoid unnecessary fleshing. For example, in order to eliminate circumferential alignment with the locking claw 33b, the inclination limiting portion 44 can be provided so as to protrude over the entire outer periphery.

  Since the tilt limiting portion 44 is partially provided in the circumferential direction, the circumferential positioning between the plug cap 4 and the plug cover 32 is performed so that the tilt limiting portion 44 does not deviate in the circumferential direction from the range in which the locking claw 33b is supported. Cost. This positioning is based on the circumferential engagement between the top surface forming wall 43 of the stopper cap 4 and the second regulating wall 37d of the stopper cover 32 shown in FIG. Since the second regulating wall 37d is molded in the same mold as the claw receiving portion 37b and the like, the second regulating wall 37d has a shape partially recessed toward the axial packing side. As shown in FIGS. 1 and 3, like the plug cover 32 and the inner plug 33, the tube portion 41 of the plug cap 4 is required to be provided on the entire inner circumference and outer circumference. Since the circumferential positioning by the second regulating wall 37d and the top surface forming wall 43 shown in FIGS. 4 and 5 is obtained, as shown in FIGS. 1 and 3, there is another space between the plug cover 32 and the plug cap 4. Without providing the circumferential positioning structure, the stopper cap 4 can be prevented from rotating with respect to the stopper cover 32 in the circumferential direction.

  The inner plug 33 is provided as one member by injection molding. The inner plug 33 is only required to be separated from the plug cover 32 as one part. However, if the inner plug is provided by combining a plurality of members, the number of parts increases and the cleaning of the coupling gap is troublesome.

  In the first embodiment, when the inner stopper 33 is separated from the stopper cover 32, the outer periphery of the inner stopper 33 including the packing support portion 33a to which the packing 34 is attached, and the axial stopper cap side of this outer periphery. The pawl 33b and the abutting wall 33d are separated from the stopper cover 32. Therefore, as shown in FIG. 1, the inner periphery and the lower surface of the plug cover 32 forming a gap between the inner periphery of the plug cover 32 and the outer periphery of the inner plug 33 are largely exposed when the inner plug 33 is eliminated. For this reason, it is easy to clean the inner periphery and the lower surface of the plug cover 32 directly. Thus, the first embodiment can improve the cleanability in the gap between the inner periphery of the stopper cover 32 and the outer periphery of the inner stopper 33. Further, from the separated inner plug 33, the packing 34 can be easily attached to and detached from the packing support portion 33a without being obstructed by other members.

  Since the screw part 31 of the container plug is provided on the inner periphery of the stopper cover 32, the packing support part 33a is provided from the outer periphery of the inner plug 33 from the position facing the screw part 31 in the screw radial direction. Thereby, since the sealing position of the packing 34 can be brought close to the stopper cap 4 side, a large capacity can be secured in the container 1 in the axial direction. As a result, even if the same capacity is ensured, the container 1 can be made compact. In other words, in the container 1 composed of a double heat insulating container, the minimum inner diameter portion 11a of the inner container 11 is provided so as to be present at a position closer to the axial plug cap 4 side than the shoulder of the outer container 12, Without making the container 12 longer in the axial direction, the minimum inner diameter portion 11a of the inner container 11 can be brought closer to the stopper cap 4 side, and the capacity of the inner container 11 can be secured widely in the axial direction. Therefore, even if the same capacity is secured, the inner container 11 can be raised, so that the container 1 can be made compact.

  A second embodiment will be described with reference to FIGS. Hereinafter, the difference from the first embodiment will be mainly described, and the same components are considered to have the same names, and the description of overlapping items will be omitted. As shown in the drawing, in the second embodiment, the decorative plate or the like is omitted, and the stopper cover 61 is configured from one component. The plug cover 61 has a second inner peripheral wall that extends from the inner peripheral edge of the upper surface portion toward the axial packing instead of the pressing member. Further, the stopper between the inner stopper 62 and the stopper cover 61 has a bayonet coupling structure. The cylindrical portion of the plug cap 63 is axially opposed to the wall portion forming the inner and outer periphery of the inner plug 62 to form a heat insulation chamber, and is not inserted into the inner periphery of the inner plug 62. For this reason, the capacity of the heat insulation chamber can be increased. The space between the second inner peripheral wall of the plug cover 61 and the cylindrical portion of the plug cap 63 is sealed with a cap packing.

The bayonet groove 64 is provided on the outer periphery of the inner plug 62. The bayonet claws 65 protrude from the second inner peripheral wall to the axial packing side at a plurality of locations in the circumferential direction of the stopper cover 61. FIG.
a) After the bayonet is joined as shown in FIG. 8 (b), when the stopper cap 63 is attached to the stopper body, the stopper 66 of the stopper cap 63 is inserted into the bayonet groove 64 as shown in FIG. 8 (c). It is inserted axially into the groove from the mouth. By this blocking portion 66, the displacement of the bayonet claw 65 toward the release rotation side can be surely prevented.

  Although each said embodiment is an application example to a portable drink container, the technical scope of this invention is not limited to the above-mentioned aspect, All within the range of the technical idea based on description of a claim Includes changes.

1 container 2 spout member 3 plug body 4, 63 plug cap 5 heat insulating chamber 11 inner container 11a minimum inner diameter part 12 outer container 12a outer screw 31 screw part 32, 61 plug cover 33, 62 middle plug 33a packing support part 33b locking Claw 34 Packing 35 Cover body 36 Decorative plate 37 Holding member 37a Claw portion 37b Claw receiving portion 37c Restriction wall 37d Second restriction wall 41 Tube portion 42 Cap packing 43 Top surface forming wall 44 Inclination limiting portion 64 Bionet groove 65 Bionet claw 65 66 Blocking part

Claims (4)

A screw part that is detachably attached to the container; a stopper cover that covers the container from the axial direction; a stopper main body having an inner stopper recessed in the axial direction from the stopper cover; and a stopper cap that detachably covers the inner stopper. A heat insulating chamber is formed by the stopper cap and the inner stopper, the inner stopper has a packing fitted on the outer periphery thereof, and the stopper body can be screwed into the container; In the state where the mouth portion of the container is inserted in the axial direction into a gap formed between the inner periphery of the cover and the outer periphery of the inner stopper, and the stopper body is fixed to the container by the screw portion, the packing is In the container stopper plug interposed between the inner periphery of the container and the outer periphery of the inner plug,
The screw portion is provided on the inner periphery of the stopper cover, and the packing is fitted to a packing support portion provided from a position facing the screw portion in the screw radial direction on the outer periphery of the inner plug. The container plug is characterized in that the inner plug and the plug cover are detachably locked at a position closer to the axial plug cap than the packing support portion.   The inner plug has locking claws protruding toward the axial plug cap side from its inner and outer circumferences at a plurality of locations in the circumferential direction, and the plug cover has a claw receiving portion that engages with the locking claws, The stopper claw of the inner plug hits the claw receiving portion in the axial direction and elastically tilts to overcome the claw receiving portion and elastically recovers to reach a position where it is engaged in the axial direction. The container mouth plug according to claim 1, wherein the cap restricts the inclination of the locking claw to a range in which the cap does not come off from the claw receiving portion when the cap is attached to the plug body.   The plug cap includes a cylindrical portion that is inserted to the inner periphery of the inner plug, and a cap packing that is fitted to the outer periphery of the cylindrical portion, and covers the recessed space of the inner plug in a detachable manner. A heat insulating chamber is formed by the cap and the inner plug, and the cap packing seals between the inner periphery of the inner plug and the outer periphery of the cylindrical portion, and the cylindrical portion limits the inclination of the locking claw. The container stopper according to claim 2.   4. The container stopper according to claim 1, wherein the container is a double heat insulating container in which an inner container and an outer container are joined, and the inner diameter of the inner container is the outer container. The outer container has an outer screw that is screwed into the screw part, and the stopper main body is fixed to the container. A beverage container in which a stopper cover is supported in the axial direction by a shoulder portion of the outer container, and the packing is interposed between a minimum inner diameter portion of the inner container.

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