JP6423287B2 - Container with inner stopper - Google Patents

Description

  The present invention relates to a container with an inner stopper that can be used by refilling contents such as lotion.

  There are a large number of containers with inner plugs that use an inner plug having a spout, which is attached after the contents are filled, in containers for storing lotion and the like. A typical inner plug is fitted inside the mouth of the container. In particular, when the inner plug is fitted by press-fitting, there are many structures in which the inner plug cannot be easily removed.

  Recently, however, an increasing number of containers are used that are refilled with only the contents in the container body, and detachable inner plugs are used for such containers. The structure of the detachable inner plug is such that the inner plug and the annular projection provided on the mouth of the container body are engaged with each other (see Patent Document 1), or a screw engagement (see Patent Document 2). ) Etc. exist.

  In the case of the inner plug with the protrusion engaged, when removing the inner plug, the protrusion is moved over to release the engagement. In the case of the inner plug using screw engagement, the engagement is released by rotating the inner plug. And can be removed. In order to facilitate such an operation of removing the inner plug, in Patent Document 1, a locking projection and a substantially triangular upward engagement protrusion are provided on the outer surface of the mouth of the container body, and the inner surface of the inner plug is provided on the inner surface of the inner plug. The engaging protrusion that engages with the engaging protrusion of the mouth part, and the lower part thereof are engaged when the inner plug is attached, and the inner stopper is rotated in the circumferential direction when the inner plug is removed, and the engaging protrusion It is described that an engaging protrusion for releasing the locking of both locking protrusions by lifting the inner plug and lifting the inner plug is described. A general screw structure is used for the screw engagement structure.

JP 2001-158456 A JP 2014-55018 A

  However, as in Cited Document 1, when the engagement protrusion provided on the inner plug is placed on the engagement protrusion provided on the mouth portion to release the locking projection, The protrusions come into contact with and get over the locking protrusions of the mouth, and if such an operation is repeated, both the locking protrusions may be worn or deformed. As a result, the locking between the mouth portion of the container main body and the inner stopper is weakened, which causes a problem in durability when used repeatedly. Further, when releasing the locking projection, a force is applied to spread the inner plug in the outer circumferential direction, but there is a problem that such deformation of the inner plug is not performed smoothly. Moreover, in the container using the screw engagement as in the cited document 2, there is a possibility that a problem arises that the inner plug also moves by opening and closing the lid depending on the shape.

  Therefore, the present invention provides a container with an inner plug that can be smoothly removed, the inner plug does not come off together with the lid when the lid is opened and closed, and can be used repeatedly for a long time. For the purpose.

  The container with an inner stopper of the present invention has a container main body having a cylindrical mouth portion, a spout for the contents in the container main body on the upper surface, and the inner stopper engaged with the cylindrical mouth portion of the container main body. And a container with an inner cap comprising an outer cap that is screw-engaged with the mouth portion of the container body, and an annular engagement protrusion projecting outward on the outer surface of the mouth portion, and the annular engagement An outer projecting portion is formed, which is located below the mating projection, projects outward and has an upward convex shape, and is formed from the upper surface of the inner plug. At least two engaging portions that extend downward, and at least two inner protruding portions that protrude inward from the inner side surface of the inner plug and have a convex shape that protrudes downward at the lower end, are formed at the lower end of the engaging portion. Projecting inward, and arcuate engagement protrusions engaged with the annular engagement protrusions The engaging portion is arranged on the same circumference so as not to overlap the inner protruding portion, and the outer peripheral surface of the mouth portion is formed on the periphery of the convex portion of the outer protruding portion. An upper inclined surface that is inclined and connected is formed, and a lower inclined surface that is inclined and connected to the inner surface of the inner plug is formed on the periphery of the lower end of the inner protruding portion and is in contact with the upper inclined surface. When the inner plug is engaged with the mouth portion, the inner protruding portion is located between the convex portions of the outer protruding portion.

  The annular engagement protrusion has an inclined surface whose protruding amount increases as it goes downward on the outer side surface of the mouth portion, and a shape in which a step is generated from the outer surface of the mouth portion at the lower end of the inclined surface. It is.

  The outer protrusions are formed with recesses between the adjacent protrusions, and the alternately arranged protrusions and the recesses are integrated, and the outer protrusions also have a peripheral edge. An upper inclined surface that is inclined and connected to the outer side surface of the mouth portion and is in contact with the lower inclined surface is formed, and when the inner plug is engaged with the mouth portion, the lower end of the inner protruding portion is the outer side. It is located in a recess between the protrusions of the protrusion.

  The outer surface of the inner plug is provided with at least one of a knurl and a groove provided so as to extend in the longitudinal direction at a position corresponding to the inner protrusion.

  The container with an inner stopper of the present invention has a container main body having a cylindrical mouth portion, a spout for the contents in the container main body on the upper surface, and the inner stopper engaged with the cylindrical mouth portion of the container main body. And a container with an inner cap comprising an outer cap that is screw-engaged with the mouth portion of the container body, and an annular engagement protrusion projecting outward on the outer surface of the mouth portion, and the annular engagement An outer projecting portion is formed, which is located below the mating projection, projects outward and has an upward convex shape, and is formed from the upper surface of the inner plug. At least two engaging portions that extend downward, and at least two inner protruding portions that protrude inward from the inner side surface of the inner plug and have a convex shape that protrudes downward at the lower end, are formed at the lower end of the engaging portion. Projecting inward, and arcuate engagement protrusions engaged with the annular engagement protrusions The engaging portion is arranged on the same circumference so as not to overlap the inner protruding portion, and the outer peripheral surface of the mouth portion is formed on the periphery of the convex portion of the outer protruding portion. An upper inclined surface that is inclined and connected is formed, and a lower inclined surface that is inclined and connected to the inner surface of the inner plug is formed on the periphery of the lower end of the inner protruding portion and is in contact with the upper inclined surface. And when the inner plug is engaged with the mouth portion, the inner protrusion portion is located between the convex portions of the outer protrusion portion so that the inner portion is engaged with the mouth portion. When the stopper is rotated, the inner protrusion comes into contact with the outer protrusion and moves upward along the outer protrusion, so that the inner stopper releases the engagement with the mouth and moves upward. At this time, the engaging portion acts as a cantilever beam with its upper end fixed, The engagement projection of the inner plug easily moves over the annular engagement projection, and the engagement of the inner plug is smoothly released. It can be used for a long time without loosening.

  The annular engagement protrusion has an inclined surface whose protruding amount increases as it goes downward on the outer side surface of the mouth portion, and a shape in which a step is generated from the outer surface of the mouth portion at the lower end of the inclined surface. Thus, when the inner stopper is attached to the container body, it is possible to smoothly move the arcuate engagement protrusion over the annular engagement protrusion and enter the engagement state. Become.

  The outer protrusions are formed with recesses between the adjacent protrusions, and the alternately arranged protrusions and the recesses are integrated, and the outer protrusions also have a peripheral edge. An upper inclined surface that is inclined and connected to the outer side surface of the mouth portion and is in contact with the lower inclined surface is formed, and when the inner plug is engaged with the mouth portion, the lower end of the inner protruding portion is the outer side. By being located in the concave portion between the convex portions of the protruding portion, the inner plug can be engaged with the mouth portion of the container main body without rotating.

  The outer surface of the inner plug is provided with at least one of a knurl and a groove provided so as to extend in the longitudinal direction at a position corresponding to the inner projecting portion. Produces an anti-slip effect when removing the plug.

FIG. 3 is a cross-sectional view of the container with an inner stopper according to the first embodiment, and the left and right sides show cross sections at different positions. It is an expanded sectional view near the mouth part of the inside stopper and the container main body, and the right and left shows the cross section of a different position. It is an expansion perspective view near the mouth part of the inside stopper and the container main body which partly cut away. It is a perspective view from the lower part of an inside stopper. It is a bottom view of an inside stopper. It is an expansion perspective view of the state which separated the inner stopper and the outer cap from the container with an inner stopper of 2nd Embodiment. It is an expansion perspective view of the mouth part of the container main body which showed the position of the inner side protrusion part when the inner stopper was engaged with the container main body with the broken line.

  The present invention will be described in detail below with reference to the drawings. FIG. 1 is a cross-sectional view of the container 1 with an inner stopper according to the first embodiment of the present invention, and FIG. 2 is an enlarged sectional view of a part of the container 1 with an inner stopper with the outer cap 4 removed. 1 and 2 show cross sections at different positions on the left and right. As shown in FIGS. 1 and 2, the container 1 with an inner stopper of the present invention has a container body 2 having a cylindrical mouth portion 5, and a cylindrical side surface 12 that engages with the mouth portion 5 of the container body 2. It consists of an inner cap 3 and an outer cap 4 having a cylindrical side surface that is screw-engaged with the mouth portion 5 of the container main body 2. The inner cap 3 is removed and new contents are put into the container main body 2 repeatedly. Used as a refillable container for used lotion.

  As shown in FIG. 1, the container body 2 has a bottle shape in which an upper portion of a cylinder is thinned, and the mouth portion 5 is formed in a cylindrical shape in the upper portion. As shown in FIGS. 2 and 3, the outer surface of the mouth portion 5 has a cylindrical shape with an upper portion having a step whose radius is smaller than that of the lower portion, and the upper portion of the mouth portion 5 is engaged with the inner plug 3. The lower stage is used for engagement with the outer cap 4. The shape of the container body 2 is not limited to a cylindrical shape, and other shapes can be used.

  As shown in FIG. 3, in order to engage with the inner plug 3, an annular engagement protrusion 7 that extends around the outer surface and protrudes outward is formed above the outer surface of the mouth portion 5. Located below the annular engaging projection 7 and projecting outward, the four recessed portions 10 and the four projecting portions 11 that are alternately arranged are integrated to form an outer projecting portion 8 that has a waveform. Furthermore, a screw thread 6 for engaging with the outer cap 4 (not shown) is formed below the outer protrusion 8.

  As shown in the right cross section of FIG. 2, the annular engagement protrusion 7 has an inclined surface whose amount of protrusion gradually increases as it goes downward, and a step difference from the outer surface of the mouth portion 5 at the lower end of the inclined surface. The resulting shape. As shown in FIG. 3, an annular groove 23 is formed between the annular engagement protrusion 7 and the outer protrusion 8. An upper inclined surface 9 that is inclined and connected to the outer surface of the mouth portion 5 is formed at a predetermined angle at the periphery of the concave portion 10 and the convex portion 11 of the outer protruding portion 8.

  As shown in FIGS. 2 and 3, the inner plug 3 is provided with a spout 17 for discharging the contents stored in the container body 2 at the center of the upper surface, and is used for engagement with the container body 2. A cylindrical insertion portion 18 to be inserted into the mouth portion 5 is formed inside the side surface 12. And, as shown in FIG. 5, four engaging portions 13 and four inner projecting portions 15 are formed inside the inner plug 3.

  The engaging portion 13 has a shape in which a circular arc extends downward from the upper surface of the inner plug 3, and protrudes inward from the lower end of the engaging portion 13, An arcuate engagement protrusion 14 is formed. The inner projecting portion 15 is formed so as to project inward from the inner surface of the side surface 12 of the inner plug 3, and the lower end is fitted into the corrugated recess 10 of the outer projecting portion 8. It has a convex shape.

  As shown in FIG. 5, the four engaging portions 13 are arranged on the same circumference at equal intervals, and the four inner projecting portions 15 are also arranged on the inner surface of the inner plug 3 at equal intervals. Yes. The engaging portion 13 and the inner protruding portion 15 are arranged so as not to overlap each other. The inner projecting portion 15 has a projecting amount so as not to project inward from the engaging portion 14.

  As shown in FIGS. 2 and 3, the engaging portion 13 extends downward with a uniform thickness, extends downward while gradually decreasing in thickness, and then protrudes inward to engage the arcuate engagement. A protrusion 14 is formed. The portion where the thickness of the engaging portion 13 is thin has an inclined inner surface. The inclined surface of the engagement portion 13 is in contact with the inclined surface of the annular engagement protrusion 7, thereby further strengthening the engagement state between the arcuate engagement protrusion 14 and the annular engagement protrusion 7. Has the effect of

  At the periphery of the lower end of the inner projecting portion 15, a lower inclined surface 16 that is inclined and connected to the inner surface of the inner plug 3 and is in contact with the upper inclined surface 9 is formed at a predetermined angle. The upper end of the inner projecting portion 15 is connected to the upper surface of the inner plug 3. The angles of the upper inclined surface 9 and the lower inclined surface 16 are not particularly limited and can be set as appropriate.

  When the arcuate engagement protrusion 14 is engaged with the annular engagement protrusion 7, as shown on the left side of the sectional view of FIG. 2, the arcuate engagement protrusion 14 is the annular engagement protrusion. 7, and is inserted into the groove 23. The inclined surface of the engaging portion 13 is in contact with the inclined surface of the annular engaging protrusion 7. The inner protrusion 15 is located in the recess 10 of the outer protrusion 8.

  As shown in FIGS. 3 and 4, a groove-shaped knurl 24 extending perpendicularly to the entire surface is provided on the outer side surface of the side surface 12 of the inner plug 3, and further at a position corresponding to the inner protrusion 15. Four grooves 25 provided to extend in the vertical direction are provided. The groove 25 has a shape having a larger width and depth than the knurling. The knurling 24 and the groove 25 provide an anti-slip effect when the inner plug 3 is turned by hand to remove the inner plug 3. It is also possible to form only one of the knurling 24 and the groove 25 instead of both.

  As shown in FIG. 1, the outer cap 4 is composed of an upper surface serving as a lid and a cylindrical side surface used for screw engagement with the mouth portion 5 of the container body 2. A protrusion 22 that protrudes downward and is inserted into 17 is provided, and a thread 21 that engages with a thread 6 provided in the mouth 5 is provided on the inner surface of the side surface. Yes.

  The engagement between the inner plug 3 and the container body 2 will be described. When attaching the inner stopper 3 to the container body 2, the inner stopper 3 is pressed against the mouth 5 of the container body 2 from above. Then, the arcuate engagement protrusion 14 comes into contact with the annular engagement protrusion 7. At this time, the arcuate engagement protrusion 14 is pushed outward by the annular engagement protrusion 7, moves over the annular engagement protrusion 7 and moves downward. At this time, the engagement portion 13 is easily deformed in the state of a cantilever whose upper end is fixed to the upper surface of the inner plug 3, so that the arc-shaped engagement protrusion 14 smoothly moves into the annular engagement. The joint 7 can be overcome.

  When the arcuate engagement protrusion 14 gets over the annular engagement protrusion 7, the arcuate engagement protrusion 14 engages with the annular engagement protrusion 7 as shown on the left side of the sectional view of FIG. 2. It will be in the state. At this time, the inclined surface of the engaging portion 13 comes into contact with the inclined surface of the annular engaging protrusion 7, and the inner protruding portion 15 is fitted in the concave portion 10 (not shown) of the outer protruding portion 8. It will be in the state. At the same time, the insertion part 18 of the inner plug 3 is inserted into the mouth part 5 of the container body 2, and the inner stopper 3 is fixed to the mouth part 5 of the container body 2.

  When the inner plug 3 is attached to the container body 2 and the inner projecting portion 15 is not inserted into the concave portion 10 of the outer projecting portion 8, the inner projecting portion 15 is rotated when the inner plug 3 is rotated. The part 15 is inserted into the recess 10 of the outer protrusion 8.

  When the fixing of the inner plug 3 is completed and the thread 21 of the outer cap 4 is threadedly engaged with the thread 6 of the container main body 2, the outer cap 4 is attached to the container main body 2, and the inner plug The attached container 1 is completed.

  Next, the case where the said inner stopper 3 is removed from the said container main body 2 is demonstrated. In order to remove the inner plug 3, the inner plug 3 is rotated. The direction in which the inner plug 3 is rotated may be left or right, unlike screw engagement. Then, the lower inclined surface 16 of the inner projecting portion 15 of the inner plug 3 contacts the upper inclined surface 9 of the outer projecting portion 8 of the container body 2, and the inner projecting portion 15 follows the waveform of the outer projecting portion 8. Move upward. More specifically, the inner protrusion 15 inserted in the recess 10 of the outer protrusion 8 rides on the protrusion 11 of the outer protrusion 8 by rotating the inner plug 3. As a result, the inner plug 3 moves upward. As a result, the arcuate engagement protrusion 14 moves over the annular engagement protrusion 7 upward to release the engagement.

  At this time, since the engaging portion 13 is easily deformed in a cantilever state where the upper end is fixed to the upper surface of the inner plug 3, the arc-shaped engaging protrusion 14 is pushed outward and smoothly. The engagement is released by overcoming the annular engagement protrusion 7. When the engagement between the arcuate engagement protrusion 14 of the inner plug 3 and the annular engagement protrusion 7 of the container body 2 is released, the inner plug 3 is removed.

  As described above, the container 1 with an inner plug of the present invention is provided with a plurality of engaging portions 13 on the inner side separately from the side surface 12 of the inner plug 3, and the arc-shaped engaging protrusions 14 are arranged on the lower end. By providing the inner projecting portion 14 at 12, the engaging portion 13 is easily deformed when the inner plug 3 is attached and detached, and the inner plug 3 can be attached and detached smoothly. Further, by reducing the force acting on each other when the arcuate engagement protrusion 14 gets over the annular engagement protrusion 7, it is possible to improve durability when the inner plug 3 is repeatedly attached and detached. Become.

  The number of the engaging portions 13 and the number of the inner projecting portions 15 has been described as being four. However, the number of the engaging portions 13 and the inner protruding portions 15 may be plural, and may be three. Further, the widths of the engaging portion 13 and the inner projecting portion 15 can be appropriately changed.

  Not only the number of the engaging portions 13 and the inner projecting portions 15 but also the number of the concave portions 10 and the convex portions 11 of the outer projecting portions 8 are appropriately changed according to the engaging portions 13 and the inner projecting portions 15. Is possible. Furthermore, the ratio of the recesses 10 and the protrusions 11 to the inner protrusions 15 can be changed, and the number of the inner protrusions 15 should be the same as or smaller than the number of the recesses 10 and the protrusions 11. Further, the shape of the outer protruding portion 8 is not limited to a corrugated shape, and can be changed as long as the shape is a combination of a concave portion and a convex portion, and a convex portion having a shape that extends upward and has a curved upper end. It is also possible to provide a plurality at equal intervals.

  Next, a container with a stopper 1 'according to a second embodiment of the present invention will be described. As shown in FIG. 6, the container 1 ′ with an inner stopper has a container body 2 ′ having a cylindrical mouth portion 5 ′ and a cylindrical side surface 12 that engages with the mouth portion 5 ′ of the container body 2 ′. And an outer cap 4 having a cylindrical side surface that is screw-engaged with the mouth portion 5 'of the container body 2'. Since the structure of the inner plug 3 and the outer cap 4 is substantially the same as that of the container 1 with the inner plug of the first embodiment, the same reference numerals are used for the respective members, and detailed description thereof is omitted.

  As shown in FIGS. 6 and 7, the container body 2 ′ makes an outer surface around the upper stage of the outer surface of the mouth portion 5 ′ and engages with the inner plug 3. A projecting annular engaging projection 7 ′ is formed, and an outer projecting portion is formed, which is located below the annular engaging projection 7 ′, projects outward, and has two convex portions 19 having a convex shape upward. Furthermore, a thread 6 'for engagement with the outer cap 4 is formed below the outer protrusion. The two convex portions 19 are independently formed at positions facing each other on the outer surface of the mouth portion 5 ′, and no concave portion is provided between the convex portions 19, and the mouth portion 5 ′ Only the side exists.

  As shown in FIG. 6, the annular engaging projection 7 ′ has an inclined surface whose amount of protrusion gradually increases as it goes downward, and a step is formed at the lower end of the inclined surface with the outer surface of the mouth portion 5 ′. Shape. An annular groove 23 'is formed between the annular engagement protrusion 7' and the convex portion 19 of the outer protrusion. An upper inclined surface 20 that is inclined and connected to the outer surface of the mouth portion 5 ′ is formed at a predetermined angle on the periphery of the convex portion 19 of the outer protruding portion.

  As shown in FIG. 6, the inner plug 3 has a spout 17 and a cylindrical insertion portion 18 formed on the upper surface. Two engaging portions 13 and two inner projecting portions 15 are formed inside the inner plug 3 so as to face each other. The engaging portion 13 and the inner projecting portion 15 are different from the first embodiment only in number, and the engaging portion 13 has a shape extending downward from the upper surface of the inner plug 3, An arcuate engagement protrusion 14 that protrudes inward and engages with the annular engagement protrusion 7 'is formed at the lower end. The inner projecting portion 15 is formed so as to project inward from the inner side surface of the side surface 12 of the inner plug 3, and the lower end has a downward convex shape. A lower inclined surface 16 is formed at a predetermined angle on the periphery of the lower end of the inner projecting portion 15 so as to be inclined and connected to the inner surface of the inner plug 3 and to come into contact with the upper inclined surface 20.

  When the arcuate engagement protrusion 14 is engaged with the annular engagement protrusion 7 ′, as shown by a broken line in FIG. The inner projecting portion 15 is located. At this time, the inner projecting portion 15 is movable between the two convex portions 19, and the inner plug 3 is rotatable, but even if the inner plug 3 is rotated, the arcuate shape is obtained. The engagement between the engagement protrusion 14 and the annular engagement protrusion 7 'is not released.

  As shown in FIG. 6, the outer cap 4 is provided with a protrusion 22 projecting downward on the inner surface of the upper surface, and on the inner surface of the side surface, the screw thread 6 ′ of the mouth portion 5 ′ and the screw engagement. A mating thread 21 is provided. A groove-shaped knurl 24 is provided on the outer side surface of the side surface 12 of the inner plug 3, and two grooves 25 are provided at positions corresponding to the inner protrusions 15. The knurling 24 and the groove 25 provide an anti-slip effect when the hand plug is rotated by hand to remove the inner plug 3.

  The engagement between the inner stopper 3 and the container body 2 'in the inner stopper-equipped container 1' will be described. The method of attaching the inner plug 3 to the container body 2 'is basically the same as that of the first embodiment. Briefly, when the inner plug 3 is pressed against the mouth portion 5 ′ of the container body 2 ′ from above, the arcuate engagement projection 14 of the engagement portion 13 contacts the annular engagement projection 7 ′. In contact therewith, the arc-shaped engaging protrusion 14 is pushed outward by the annular engaging protrusion 7 ′, moves over the annular engaging protrusion 7 ′ and moves downward. Thereafter, the arcuate engagement protrusion 14 is engaged with the annular engagement protrusion 7 '.

  When the arcuate engagement protrusion 14 of the engagement portion 13 gets over the annular engagement protrusion 7 ′, the engagement portion 13 is in a cantilever state in which the upper end is fixed to the upper surface of the inner plug 3. Therefore, when a force is applied to the arcuate engagement protrusion 14, the arcuate engagement protrusion 14 can easily get over the annular engagement protrusion 7 ′.

  When the arcuate engagement protrusion 14 and the annular engagement protrusion 7 ′ are engaged, the inner protrusion 15 has two protrusions of the outer protrusion as shown by a broken line in FIG. Arranged in the space between the parts 19. An insertion portion 18 (not shown) of the inner plug 3 is inserted into the mouth portion 5 ′ of the container body 2 ′, and the inner stopper 3 is inserted into the mouth portion 5 ′ of the container body 2 ′. Fixed.

  Thus, in a state where the inner plug 3 is fixed to the mouth portion 5 ′ of the container main body 2 ′, the inner projecting portion 15 of the inner plug 3 is formed by the two projecting portions 19 of the outer projecting portion. Since it is movable as shown by an arrow in FIG. 7 (a), the inner plug 3 is engaged with the mouth portion 5 ′ of the container body 2 ′ so as to be rotatable within a predetermined range. It is in the state. However, since the inner plug 3 is prevented from moving in the vertical direction by the engagement between the arcuate engagement protrusion 14 and the annular engagement protrusion 7 ′, the inner plug 3 is attached to the container body. There is no departure from 2 '.

  When the inner plug 3 is attached to the container body 2 ′, when the inner protrusion 15 is in a position overlapping the convex portion 19 of the outer protrusion, when the inner plug 3 is rotated, the inner protrusion 3 The part 15 moves to the space between the convex parts 19, and the inner plug 3 is attached to the container body 2 '. When the fixing of the inner plug 3 is completed, the outer cap 4 is attached to the container body 2 ′ by screwing the thread 21 of the outer cap 4 with the thread 6 ′ of the container body 2 ′. The inside stoppered container 1 ′ is completed.

  Next, a case where the inner plug 3 is removed from the container body 2 'will be described. For example, in order to remove the inner plug 3 from the state of FIG. 7A, the inner plug 3 is rotated in the direction of the arrow on the right side. Then, as shown in FIG. 7B, a part of the lower inclined surface 16 of the inner projecting portion 15 of the inner plug 3 abuts a part of the upper inclined surface 20 of the convex portion 19 of the outer projecting portion. When the inner plug 3 is further rotated, a force acts in a direction in which the inner projecting portion 15 of the inner plug 3 moves upward along the convex portion 19 of the outer projecting portion, and the inner plug 3 is moved upward. Move to. As a result, the arcuate engagement protrusion 14 moves over the annular engagement protrusion 7 'upward to release the engagement.

  At this time, since the engaging portion 13 is easily deformed in a cantilever state, the arc-shaped engaging protrusion 14 smoothly goes over the annular engaging protrusion 7 'and is disengaged. . When the engagement between the arcuate engagement protrusion 14 of the inner plug 3 and the annular engagement protrusion 7 'of the container body 2' is released, the inner plug 3 is removed.

  Thus, since the container 1 ′ with an inner stopper of the present embodiment uses only the convex portion 19 as the outer protruding portion, the inner stopper 3 is fixed so as to be rotatable within a predetermined range. Similarly to the first embodiment, when the inner plug 3 is attached and detached, the engaging portion 13 is deformed as a cantilever so that the inner plug 3 can be attached and detached smoothly.

  Also in this embodiment, the number of the arc-shaped engagement protrusions 14 and the inner protrusions 15 can be changed as appropriate. Further, the number of the convex portions 19 of the outer projecting portion can be appropriately changed. For example, the number of the arc-shaped engaging protrusions 14 and the inner protrusions 15 remains two, and the number of the protrusions 19 of the outer protrusions is four, so that the inner plug 3 is connected to the container. It is also possible to narrow the rotation range when fixed to the main body 2 ′. Furthermore, the number of the protrusions 19 of the outer protrusions is two, and the number of the arc-shaped engagement protrusions 14 and the inner protrusions 15 is four more than the protrusions 19. It is also possible to narrow the rotation range when the inner plug 3 is fixed to the container body 2 ′.

DESCRIPTION OF SYMBOLS 1,1 'Container with inner stopper 2,2' Container body 3 Inner stopper 4 Outer cap 5,5 'Mouth 6,6' Thread 7,7 'Annular engagement protrusion 8 Outer protrusion 9 Upper inclined surface Concave part 11 Convex part 12 Side surface 13 Engagement part 14 Arc-shaped engagement protrusion 15 Inner protrusion part 16 Lower inclined surface 17 Outlet 18 Insertion part 19 Convex part 20 Upper inclined surface 21 Thread 22 Projection 23, 23 'Groove 24 Knurl 25 groove

Claims (4)

A container main body having a cylindrical mouth, a spout for the contents in the container main body on the upper surface, an inner plug engaged with the cylindrical mouth of the container main body, and the mouth of the container main body; A container with an inner cap comprising an outer cap engaged with a screw;
An annular engagement protrusion that protrudes outward on the outer surface of the mouth, and at least two protrusions that are located below the annular engagement protrusion and protrude outward and have an upward convex shape An outer protrusion composed of
Inside the inner plug, there is an engaging portion extending downward from the upper surface of the inner plug, and an inner protruding portion that protrudes inward from the inner side surface of the inner plug, the lower end having a convex shape downward, At least two of each are formed, and the lower end of the engaging portion is formed with an arcuate engaging protrusion that protrudes inward and engages with the annular engaging protrusion,
The engaging portions are arranged on the same circumference so as not to overlap the inner projecting portion,
An upper inclined surface that is inclined and connected to the outer surface of the mouth is formed on the periphery of the convex portion of the outer protrusion,
At the periphery of the lower end of the inner projecting portion, a lower inclined surface that is inclined and connected to the inner side surface of the inner plug is formed in contact with the upper inclined surface,
The container with an inner stopper, wherein the inner protrusion is located between the protrusions of the outer protrusion when the inner stopper is engaged with the mouth portion.   The annular engaging protrusion has an inclined surface whose protruding amount increases as it goes downward on the outer surface of the mouth portion, and has a shape in which a step is generated from the outer surface of the mouth portion at the lower end of the inclined surface. The container with an inner stopper according to claim 1.   The outer protrusions are formed with recesses between the adjacent protrusions, and the alternately arranged protrusions and the recesses are integrated, and the outer protrusions also have a peripheral edge. An upper inclined surface that is inclined and connected to the outer side surface of the mouth portion and is in contact with the lower inclined surface is formed, and when the inner plug is engaged with the mouth portion, the lower end of the inner protruding portion is the outer side. The container with an inner stopper according to claim 1 or 2, wherein the container is located in a concave portion between the convex portions of the protruding portion.   The outer surface of the inner plug is provided with at least one of a knurl and a groove provided to extend in a longitudinal direction at a position corresponding to the inner protrusion. The container with an inner stopper of any one of 1-3.