JP6484023B2 - 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 an inner plug with a protrusion engaged, it is necessary to release the engagement by overriding the protrusion when removing the inner plug. In the case of an inner plug using screw engagement, it can be attached and removed by rotating the inner plug. Is possible. In order to facilitate such an operation of removing the inner plug, in Patent Document 1, a locking projection and a substantially triangular upward engaging protrusion are provided on the outer surface of the mouth of the container body, and the inner surface of the inner plug is provided. Is engaged when the inner plug is attached to the locking protrusion of the mouth portion and below, and when the inner plug is removed, the inner plug is rotated in the circumferential direction when the inner plug is removed. It is described that an engagement protrusion is provided for releasing the locking of both locking protrusions by climbing on the part and lifting the inner plug.

JP 2001-158456 A JP 2014-55018 A

  However, as in Cited Document 1, when the engaging protrusion provided on the inner plug rides on the engaging protrusion provided on the mouth portion to release the locking protrusion, The protrusions will come into contact with and get over the locking protrusions on the mouth, and if such an operation is repeated, the locking protrusions may be worn or deformed. It becomes weak and a problem arises in durability in repeated use. 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.

  Accordingly, an object of the present invention is to provide a container with an inner stopper that can be smoothly removed and can be used repeatedly for a long time.

  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 or above the mating projection and projects outward and has an upward projecting shape. The outer projecting portion projects inward on the inner surface of the inner plug. An arcuate engagement projection that engages with the annular engagement projection, and an inner side that is located above or below the arcuate engagement projection, protrudes inward, and has a lower end protruding downward At least two protrusions are formed, and the periphery of the protrusions of the outer protrusions Is formed with an upper inclined surface that is inclined and connected to the outer surface, and a lower inclined surface that is inclined and connected to the inner surface and is in contact with the upper inclined surface at the lower edge of the inner protrusion. A surface is formed, and when the inner plug is engaged with the mouth portion, the inner protrusion is located between the protrusions of the outer protrusion.

  The upper surface of the annular engagement protrusion is inclined downward from the outer surface of the mouth portion, and the lower surface of the arc-shaped engagement protrusion is inclined upward from the inner surface.

  The outer protrusions are each formed with recesses between the adjacent protrusions, and the protrusions and the recesses are alternately arranged, and the outer protrusions are also integrated with the periphery of the recesses of the outer protrusions. An upper inclined surface that is inclined and connected to the outer side surface 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 protruding portion. It fits into a recess between the projections.

  Furthermore, the angles of the upper inclined surface and the lower inclined surface are 30 ° to 60 °.

  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 or above the mating projection and projects outward and has an upward projecting shape. The outer projecting portion projects inward on the inner surface of the inner plug. An arcuate engagement projection that engages with the annular engagement projection, and an inner side that is located above or below the arcuate engagement projection, protrudes inward, and has a lower end protruding downward At least two protrusions are formed, and the periphery of the protrusions of the outer protrusions Is formed with an upper inclined surface that is inclined and connected to the outer surface, and a lower inclined surface that is inclined and connected to the inner surface and is in contact with the upper inclined surface at the lower edge of the inner protrusion. When the inner plug is engaged with the mouth portion, the inner protrusion portion is positioned between the convex portions of the outer protrusion portion to engage with the mouth portion. When the inner plug is rotated, the inner projecting portion comes into contact with the outer projecting portion, and the outer projecting force acts on the inner projecting portion by the outer projecting portion, so that the inner plug is engaged in an arc shape. The portion provided with the protrusion is deformed outward, and the arcuate engagement protrusion easily moves over the annular engagement protrusion, so that the engagement of the inner plug is smoothly performed. Furthermore, even if it is used repeatedly, the engagement state of the inner plug does not loosen for a long period of time. Rukoto is possible.

  And, the upper surface of the annular engagement protrusion is inclined downward from the outer surface of the mouth, and the lower surface of the arc-shaped engagement protrusion is inclined upward from the inner surface. When the inner plug is attached to the container body, the arcuate engagement projection can be smoothly moved over the annular engagement projection and moved downward to be in an engaged state.

  The outer protrusions are each formed with recesses between the adjacent protrusions, and the protrusions and the recesses are alternately arranged, and the outer protrusions are also integrated with the periphery of the recesses of the outer protrusions. An upper inclined surface that is inclined and connected to the outer side surface 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 protruding portion. By being fitted in the concave portion between the convex portions, the inner plug can be engaged with the mouth portion of the container main body without rotating.

It is sectional drawing of the container with an inside stopper of 1st Embodiment. 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 a top view of an inside plug, and is a figure showing a deformation state of an inside plug with a dashed-dotted line. 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. It is an expanded sectional view of the mouth vicinity of the container with a stopper in the third embodiment. 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 bottom view of an inside stopper. It is a top view of an inside plug, and is a figure showing a deformation state of an inside plug with a dashed-dotted 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. 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. The outer protrusion 8 is located below the annular engaging protrusion 7 and protrudes outward, and is composed of four concave portions 10 and four convex portions 11 that are alternately arranged, and the upper portion is corrugated. Further, a screw thread 6 is formed below the outer protrusion 8 for engagement with the outer cap 4. As shown in FIG. 2, the annular engaging projection 7 is composed of an upper surface, a vertical side surface, and a horizontal lower surface, but the upper surface is inclined downward from the outer surface of the mouth portion 5. . In addition, an upper inclined surface 9 that is inclined and connected to the outer surface is formed at an angle of 45 ° at the periphery of the concave portion 10 and the convex portion 11 of the outer protrusion 8.

  As shown in FIGS. 2 and 3, the inner plug 3 is provided with a spout 16 for discharging the contents accommodated 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 17 to be inserted into the mouth portion 5 is formed inside the side surface 12. Then, as shown in FIG. 4, on the inner surface of the side surface 12, an arcuate engagement protrusion 13 that protrudes to the inside of the inner plug 3 and engages with the annular engagement protrusion 7, and the circle Two inner projecting portions 14 each having a downward projecting shape are located below the arc-shaped engaging projection 13 and projecting inward, and the lower ends thereof are fitted into the corrugated recesses 10 of the outer projecting portion 8. They are formed so as to face each other (see FIG. 5).

  As shown in FIG. 5, the length of the arcuate engagement protrusion 13 is about ¼ of the circumference of the inner surface of the side surface 12, and the two arcuate engagement protrusions 13 are It will engage with half of the annular engaging projection 7. A lower inclined surface 15 that is inclined and connected to the inner side surface and contacts the upper inclined surface 9 is formed at an angle of 45 ° at the periphery of the lower end of the inner protruding portion 14. The upper end of the inner protrusion 14 is connected to and integrated with the arcuate engagement protrusion 13. The angles of the upper inclined surface 9 and the lower inclined surface 15 are not limited to 45 °, but are preferably in the range of 30 ° to 60 °.

  When the arcuate engagement protrusion 13 is engaged with the annular engagement protrusion 7, the arcuate engagement protrusion is interposed between the annular engagement protrusion 7 and the upper end of the outer protrusion 8. The protrusion 13 and the inner protrusion 14 are positioned, the upper surface of the arcuate engagement protrusion 13 is in contact with the lower surface of the annular engagement protrusion 7, and the lower inclined surface 15 of the inner protrusion 14 is the outer side. The protrusion 8 is in contact with the upper inclined surface 9 at the upper end.

  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 21 that protrudes downward and is inserted into 16 is provided. On the inner surface of the side surface, a screw thread 20 that is engaged with a screw thread 6 provided in the mouth portion 5 is provided. 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, first, the lower inclined surface 15 of the inner projecting portion 14 of the inner plug 3 is in contact with the upper surface of the annular engaging projection 7 of the container body 2, and the inner projecting portion 14 is in contact with the annular engaging projection 7. Get over. At this time, since the lower inclined surface 15 and the upper surface of the annular engagement protrusion 7 are both inclined, the inner protrusion 14 can smoothly get over the annular engagement protrusion 7. The arcuate engagement protrusion 13 positioned above the inner protrusion 14 also gets over the annular engagement protrusion 7.

  In this way, when the inner protrusion 14 and the arcuate engagement protrusion 13 get over the annular engagement protrusion 7, the inner protrusion 14 is provided at two locations facing the inner plug 3. Therefore, as shown by a one-dot chain line in FIG. 6, two portions of the inner plug 3 bulge outward and are deformed into a substantially elliptical shape. Compared to the case where the entire inner plug 3 bulges outward, the inner plug 3 is more easily deformed when only two portions bulge outward. The engagement protrusion 13 can get over the annular engagement protrusion 7, and the attaching operation of the inner plug 3 can be performed smoothly.

  After the inner protrusion 14 and the arcuate engagement protrusion 13 have passed over the annular engagement protrusion 7, the inner protrusion 14 and the arcuate engagement protrusion 13 become the annular engagement protrusion 7. And the outer protrusion 8, the upper surface of the arcuate engagement protrusion 13 and the lower surface of the annular engagement protrusion 7 come into contact with each other, and the arcuate engagement protrusion 13 and the annular engagement Engagement with the protrusion 7 is performed. At this time, the inner protrusion 14 is fitted into the recess 10 of the outer protrusion 8, and the lower inclined surface 15 of the inner protrusion 14 and the upper inclined surface 9 of the outer protrusion 8 are in contact with each other. At this time, the insertion part 17 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 14 is in a position not fitted in the recess 10 of the outer projecting portion 8, The protrusion 14 is fitted into the recess 10 of the outer protrusion 8 so that the deformation of the inner plug 3 is restored.

  When the fixing of the inner plug 3 is completed, when the screw thread 20 of the outer cap 4 is screw-engaged with the screw 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. Then, a force acts in a direction in which the inner projecting portion 14 of the inner plug 3 moves upward along the waveform of the upper portion of the outer projecting portion 8 of the container body 2, and at the same time, the inner projecting portion 14 has a lower inclined surface. A force acts in a direction in which 15 is pushed outward along the inclination of the upper inclined surface 9 of the outer protrusion 8. When such a force is applied, the inner projecting portions 14 are provided at two locations on the inner plug 3, so that the inner plug 3 bulges outward as shown by a one-dot chain line in FIG. It transforms into a shape. At this time, the two arc-shaped engaging projections 13 and the two inner protrusions 14 are disposed at positions facing each other on the inner side surface of the inner plug 3 (on the inner side surface of the inner plug 3 The inner plug 3 is more easily deformed by the uniform arrangement of the two regions where the arc-shaped engagement protrusion 13 and the inner protrusion 14 do not exist.

  Due to the outward deformation of the inner plug 3 caused by the inner projecting portion 14, the arc-shaped engaging protrusion 13 of the inner plug 3 is affected and moves to the outer side. It becomes easy to get over the engaging protrusion 7 of the. At this time, when the protruding amount of the inner protruding portion 14 is about twice the protruding amount of the arc-shaped engaging protrusion 13, the arc-shaped engaging protrusion 13 of the inner plug 3 moves outward. The amount increases. As a result, the inner plug 3 moves upward while rotating, and when pulled up as it is, the arc-shaped engaging protrusion 13 gets over the annular engaging protrusion 7 and then the inner protrusion. When the portion 14 gets over the annular engagement protrusion 7, the engagement between the arcuate engagement protrusion 13 of the inner plug 3 and the annular engagement protrusion 7 of the container body 2 is released, and the inner plug 3 is removed.

  As described above, the container 1 with an inner plug of the present invention is provided with the arc-shaped engaging protrusions 13 and the inner protrusions 14 at two opposing positions instead of the entire circumference of the inner surface of the inner plug 3. When the plug 3 is attached / detached, the inner plug 3 is easily deformed so that the inner plug 3 can be attached / detached smoothly. Further, when the arcuate engagement protrusion 13 gets over the annular engagement protrusion 7. By reducing the forces acting on each other, it becomes possible to improve the durability when the inner plug 3 is repeatedly attached and detached.

  Although the number of the arcuate engagement protrusions 13 and the inner protrusions 14 has been described as being two, the number of the protrusions 13 and the inner protrusions 14 may be plural, and may be three. The inner plug 3 may be easily deformed by partially arranging the arcuate engagement protrusions 13 instead of the entire circumference of the side surface. A plurality of arcuate engagement protrusions 13 and inner protrusions 14 are arranged on the inner surface of the inner plug 3 at equal intervals, and the arcuate engagement protrusions 13 and inner protrusions are formed on the inner surface of the inner plug 3. Although it is preferable to make a plurality of areas where 14 does not exist uniform, it is not limited to such an arrangement, and a plurality of areas may be different from each other.

  Not only the number of the arcuate engagement protrusions 13 and the inner protrusions 14 but also the number of the recesses 10 and the protrusions 11 of the outer protrusions 8, the arcuate engagement protrusions 13 and the inner protrusions 14, and the ratio of the concave portion 10 and the convex portion 11 with respect to the arc-shaped engaging protrusion 13 and the inner protruding portion 14 can also be changed. It is sufficient that the number of the inner protrusions 14 is smaller than the number of the recesses 10 and the protrusions 11. Moreover, the shape of the said outside protrusion part 8 is not limited to a waveform, It can change if it is the shape which combined the recessed part and the convex part.

  The arcuate engagement protrusion 13 and the inner protrusion 14 are preferably arranged so that the central axes in the vertical direction coincide with each other as shown in FIG. 4, but the inner plug 3 can be attached and detached smoothly. If it can be performed, it is also possible to dispose the arcuate engagement protrusion 13 and the inner protrusion 14 with the center axis shifted.

  Next, a container with a stopper 1 'according to a second embodiment of the present invention will be described. As shown in FIG. 7, 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 first embodiment, the same reference numerals are used for the respective members, and detailed description thereof is omitted.

  As shown in FIG. 7, the container body 2 ′ protrudes outward on the outer surface of the mouth portion 5 ′ around the outer surface for engagement with the inner plug 3. An annular engagement protrusion 7 ′ is located below the annular engagement protrusion 7 ′, protrudes outward, and is formed with an outer protrusion composed of two protrusions 18 having an upwardly convex shape, Further, a screw thread 6 ′ is formed below the outer protrusion for engagement with the outer cap 4. The annular engaging protrusion 7 'is composed of an upper surface, a vertical side surface, and a horizontal lower surface.

  The two convex portions 18 are formed independently at positions facing each other on the outer surface, and no concave portion is provided between the convex portions 18, and only the outer surface of the mouth portion 5 'exists. doing. And the upper inclined surface 19 which inclines and connects to the said outer surface is formed in the periphery of the convex part 18 of the said outside protrusion part at an angle of 45 degrees.

  As shown in FIG. 7, the inner plug 3 has a spout 16 and a cylindrical insertion portion 17 formed on the upper surface. Then, on the inner surface of the side surface 12, an arcuate engagement projection 13 that engages with the annular engagement projection 7 ′, and a downward convex shape that is located below the arcuate engagement projection 13 Are formed so as to face each other. A lower inclined surface 15 is formed at an angle of 45 ° at the lower edge of the inner projecting portion 14 so as to be inclined and connected to the inner side surface and abut against the upper inclined surface 19.

  When the arcuate engagement protrusion 13 is engaged with the annular engagement protrusion 7 ′, the upper surface of the arcuate engagement protrusion 13 is in contact with the lower surface of the annular engagement protrusion 7 ′. Between the two protrusions 18 of the outer protrusion, the inner protrusion 14 is positioned as shown by a broken line in FIG.

  As shown in FIG. 7, the outer cap 4 is provided with a protrusion 21 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 20 is provided.

  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 5 'of the container body 2' from above, the inner projecting portion 14 gets over the annular engaging projection 7 '. The arcuate engagement protrusion 13 positioned above the inner protrusion 14 also gets over the annular engagement protrusion 7 '.

  Thus, when the inner protrusion 14 and the arcuate engagement protrusion 13 get over the annular engagement protrusion 7 ', the two positions where the inner protrusion 14 is located bulge outward and have a substantially elliptical shape. By deforming, the inner projecting portion 14 and the arcuate engagement protrusion 13 of the inner plug 3 can smoothly get over the annular engagement protrusion 7 ′.

  After the inner projecting portion 14 and the arcuate engagement protrusion 13 get over the annular engagement protrusion 7 ′, the arcuate engagement protrusion 13 is positioned below the annular engagement protrusion 7 ′. Then, the upper surface of the arcuate engagement protrusion 13 and the lower surface of the annular engagement protrusion 7 ′ come into contact with each other, and the arcuate engagement protrusion 13 and the annular engagement protrusion 7 ′ engage with each other. Is called. At this time, the inner projecting portion 14 is disposed in a space between the two convex portions 18 of the outer projecting portion, as indicated by a broken line in FIG. The insertion portion 17 of the inner plug 3 is inserted into the mouth portion 5 'of the container body 2', and the inner stopper 3 is fixed to the mouth portion 5 'of the container body 2'.

  Thus, in a state where the inner plug 3 is fixed to the mouth portion 5 ′ of the container body 2 ′, the inner projecting portion 14 of the inner plug 3 is located between the two convex portions 18 in FIG. Since it is movable as indicated by an arrow in a), the inner plug 3 is in a state of being rotatably engaged with the mouth portion 5 ′ of the container body 2 ′. However, since the inner plug 3 is prevented from moving in the vertical direction by the engagement of the arcuate engagement protrusion 13 and the annular engagement protrusion 7 ', the inner plug 3 is not 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 14 is in a position overlapping the convex portion 18 of the outer protrusion, the inner protrusion 3 is rotated to rotate the inner protrusion 3. The part 14 moves to the space between the convex parts 18, and the deformation of the inner plug 3 is restored.

  When the fixing of the inner plug 3 is completed, when the screw thread 20 of the outer cap 4 is screw-engaged with the screw thread 6 ′ of the container body 2 ′, the outer cap 4 is attached to 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. 8A, the inner plug 3 is rotated in the direction of the arrow on the right side. Then, as shown in FIG. 8B, a part of the lower inclined surface 15 of the inner projecting portion 14 of the inner plug 3 comes into contact with a part of the upper inclined surface 19 of the convex portion 18 of the outer projecting portion. When the inner plug 3 is further rotated, a force acts in a direction in which the inner protruding portion 14 of the inner plug 3 moves upward along the convex portion 18 of the outer protruding portion, and at the same time, the inner protruding portion 14. A force acts in a direction in which the lower inclined surface 15 is pushed outward along the inclination of the upper inclined surface 19 of the convex portion 18. When such a force is applied, the inner projecting portion 14 is provided at two locations on the inner plug 3 so that the inner plug 3 bulges outward and deforms into a substantially elliptical shape.

  Due to the outward deformation of the inner plug 3 caused by the inner projecting portion 14, the arc-shaped engagement protrusion 13 of the inner plug 3 is affected and moves outward, so that the container body 2 ′ It becomes easy to get over the annular engaging projection 7 '. As a result, the inner plug 3 moves upward while rotating, and when pulled up as it is, the arc-shaped engaging protrusion 13 gets over the annular engaging protrusion 7 ', and then continues to the inner side. The protrusion 14 gets over the annular engagement protrusion 7 ′, and the engagement between the arcuate engagement protrusion 13 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, since the container 1 ′ with an inner stopper of the present embodiment uses only the convex portion 18 as the outer projecting portion, the inner stopper 3 is rotatably fixed. Similarly to the above, the inner plug 3 is deformed at the time of attachment / detachment, so that the attachment / detachment of the inner plug 3 can be performed smoothly, and the arc-shaped engagement protrusion 13 is formed by the annular engagement protrusion 7. By reducing the force acting on each other when getting over ', it becomes possible to improve the durability when the inner plug 3 is repeatedly attached and detached.

  The number of the arcuate engagement protrusions 13 and the inner protrusions 14 can be changed as appropriate. Further, the number of the protrusions 18 of the outer protrusion can be appropriately changed. For example, the number of the arc-shaped engagement protrusions 13 and the inner protrusions 14 is two, and the number of the protrusions 18 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 18 of the outer protrusions remains two, and the number of the arc-shaped engagement protrusions 13 and the inner protrusions 14 is four, which is larger than the protrusions 18. It is also possible to narrow the rotation range when the inner plug 3 is fixed to the container body 2 ′.

  Next, a container 31 with an inner stopper according to a third embodiment of the present invention will be described. FIG. 9 is an enlarged cross-sectional view of a part of the container 31 with an inner stopper according to the third embodiment of the present invention. As shown in FIG. 9, the container 31 with an inner stopper of the present invention has an inner stopper having a container body 32 having a cylindrical mouth portion 35, and a cylindrical side surface 42 that engages with the mouth portion 35 of the container body 32. 33 and an outer cap 34 having a cylindrical side surface that is screw-engaged with the mouth portion 35 of the container body 32, and is used as a refillable container.

  As shown in FIGS. 9 and 10, the container main body 32 is formed with the cylindrical mouth portion 35 at the upper portion of the main body. As shown in FIGS. 9 and 10, the outer surface of the mouth portion 35 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 35 is engaged with the inner plug 33. The lower stage is used for engagement with the outer cap 34.

  As shown in FIG. 10, six concave portions 40 and six convex portions 41 that are alternately arranged to protrude outwardly from the upper stage of the outer surface of the mouth portion 35 for engagement with the inner plug 33. Are formed integrally, and an outer protruding portion 38 having a corrugated upper portion is formed, and an annular engaging protrusion 37 that protrudes outward is formed below the outer protruding portion 38 around the outer surface. Further, a screw thread 36 is formed below the annular engagement protrusion 37 for engagement with the outer cap 34. An upper inclined surface 39 that is inclined and connected to the outer surface is formed at an angle of 45 ° at the periphery of the concave portion 40 and the convex portion 41 of the outer protrusion 38.

  The lower end of the outer protrusion 38 is connected to and integrated with the annular engagement protrusion 37. The annular engagement protrusion 37 has a shape that protrudes further outward than the outer protrusion 38. The annular engagement protrusion 37 is composed of an upper surface, a vertical side surface, and a horizontal lower surface, and the upper surface is inclined downward from the outer surface of the mouth portion 35.

  As shown in FIGS. 9 and 10, the inner plug 33 is provided with a spout 46 at the center of the upper surface, and a cylindrical insertion portion 47 on the inner side of the side surface 42 used for engagement with the container body 32. Is formed. An inner projecting portion 44 projecting inwardly of the inner plug 33 on the inner side surface of the side surface 42, having a lower end fitted into a corrugated concave portion 40 of the outer projecting portion 38, and having a convex shape downward; Three arcuate engagement protrusions 43 that protrude inward and engage with the annular engagement protrusion 37 are formed at equal intervals (see FIG. 11).

  As shown in FIG. 11, the length of the arcuate engagement protrusions 43 is about 1/6 of the circumference of the inner surface of the side surface 42, and the three arcuate engagement protrusions 43 are Engage with half of the annular engagement protrusion 37. At the periphery of the lower end of the inner projecting portion 44, a lower inclined surface 45 that is inclined and connected to the inner side surface and is in contact with the upper inclined surface 39 is formed at an angle of 45 °. The angle of the upper inclined surface 39 and the lower inclined surface 45 is not limited to 45 °, and is preferably in the range of 30 ° to 60 °.

  A groove 48 is formed above the arcuate engagement protrusion 43, and the annular engagement protrusion 37 is fitted in the groove 48. The arc-shaped engagement protrusion 43 is composed of a horizontal upper surface and inclined side surfaces, and has a triangular cross-sectional shape.

  When the arcuate engagement projection 43 is engaged with the annular engagement projection 37, the upper surface of the arcuate engagement projection 43 abuts the lower surface of the annular engagement projection 37, and the inner side The protrusion 44 is fitted into the recess 40 of the outer protrusion 38, and the lower inclined surface 45 of the inner protrusion 44 is in contact with the upper inclined surface 39 of the outer protrusion 38.

  As shown in FIG. 9, the outer cap 34 is composed of an upper surface serving as a lid and a cylindrical side surface used for screw engagement with the mouth portion 35 of the container body 32, and protrudes downward from the inner surface of the upper surface. On the inner side surface of the side surface, a thread 50 that is threadedly engaged with the thread 36 of the mouth portion 35 is formed.

  The engagement between the inner plug 33 and the container body 32 will be described. When attaching the inner plug 33 to the container main body 32, the inner plug 33 is pressed against the mouth 35 of the container main body 32 from above. Then, the arc-shaped engagement protrusion 43 of the inner plug 33 moves downward while the apex portion of the triangular cross section is in contact with the outer surface of the outer protrusion 38. At this time, when the inner protrusion 44 is in a position where the inner protrusion 44 is fitted in the recess 40 of the outer protrusion 38, the arc-shaped engagement protrusion 43 gets over the annular engagement protrusion 37, and The arcuate engagement protrusion 43 and the annular engagement protrusion 37 are engaged, and the inner protrusion 44 is inserted into the recess 40 of the outer protrusion 38 and fitted.

  When the arcuate engagement protrusion 43 gets over the annular engagement protrusion 37, the side surface of the arcuate engagement protrusion 43 is inclined, and the upper surface of the annular engagement protrusion 37 is inclined. As a result, the arc-shaped engagement protrusion 43 smoothly moves over the annular engagement protrusion 37 and moves to the engagement position. At this time, as shown by the alternate long and short dash line in FIG. 12, the inner plug 33 is deformed so that the three portions of the side surface swell outward, but since it partially deforms, it is easier to deform than the conventional inner plug, The inner plug 33 can be attached smoothly.

  When the inner plug 33 is attached to the container main body 32, if the inner projecting portion 44 is displaced from the position where the inner projecting portion 44 is fitted in the concave portion 40 of the outer projecting portion 38, the arc-shaped engaging projection 43 is provided. Before the abutment with the annular engagement projection 37, the lower inclined surface 45 of the inner protrusion 44 abuts with the upper inclined surface 39 of the convex portion 41 of the outer protrusion 38, and the inner protrusion 44 It moves to the recessed part 40 along the upper end of the outer side protrusion part 38, and is fitted. At this time, the inner plug 33 rotates. Further, during the movement of the inner projecting portion 44, the arc-shaped engaging protrusion 43 gets over the annular engaging protrusion 37 and is engaged.

  In this way, when the fixing of the inner plug 33 is completed, the outer cap 34 is attached to the container body 32 by screwing the thread 50 of the outer cap 34 with the thread 36 of the container body 32. Thus, the container 31 with an inner stopper is completed.

  Next, a case where the inner plug 33 is removed from the container main body 32 will be described. In order to remove the inner plug 33, the inner plug 33 is rotated. Then, a force acts in a direction in which the inner projecting portion 44 of the inner plug 33 moves upward along the waveform of the upper portion of the outer projecting portion 38 of the container body 32, and at the same time, the inner projecting portion 44 has a lower inclined surface. A force acts in a direction in which 45 is pushed outward along the inclination of the upper inclined surface 39 of the outer protrusion 38. When such a force is applied, the inner projecting portion 34 is provided at three locations of the inner plug 33, so that the inner plug 33 has three locations outward as indicated by a one-dot chain line in FIG. Swells and deforms.

  Due to the deformation of the inner stopper 33, the arc-shaped engaging protrusion 43 of the inner stopper 33 also moves outward, so that it becomes easier to get over the annular engaging protrusion 37 of the container body 32. As a result, the inner plug 33 moves upward while rotating, and when pulled up as it is, the arc-shaped engagement protrusion 43 gets over the annular engagement protrusion 37 and the inner plug 33 The engagement between the arcuate engagement protrusion 43 and the annular engagement protrusion 37 of the container body 32 is released, and the inner plug 33 is removed.

  When the inner plug 33 is removed from the container main body 32, the deformation of the inner plug 32 is less than the amount of deformation that bulges outside the portion where the arcuate engagement protrusion 43 is provided. The amount of deformation that bulges outside the portion where the arc-shaped engagement protrusion 43 is provided is larger, and the amount of protrusion of the inner protrusion 44 is equal to the amount of protrusion of the arc-shaped engagement protrusion 43. By being approximately doubled, the movement amount of the inner plug 33 to the outside of the arcuate engagement protrusion 43 is increased, so that the arcuate engagement protrusion 43 is more smoothly moved to the annular engagement protrusion. You can get over 37.

  As described above, the container 31 with the inner plug of the present invention is provided with the arcuate engagement protrusions 43 and the inner protrusions 44 at three positions instead of the entire circumference of the inner surface of the inner plug 33, thereby By making the inner plug 33 easier to deform during attachment / detachment, the inner plug 33 can be attached / detached smoothly, and when the arcuate engagement protrusion 43 gets over the annular engagement protrusion 37. By reducing the forces acting on each other, it is possible to improve the durability when the inner plug 33 is repeatedly attached and detached.

  In the present embodiment, the description has been given of the case where the number of the arc-shaped engagement protrusions 43 and the inner protrusions 44 is three, and the number of the recesses 40 and the protrusions 41 of the outer protrusions 38 is six. The number may be plural and can be changed as appropriate. The ratio of the concave portion 40 and the convex portion 41 of the outer protrusion 38 to the arcuate engagement protrusion 43 and the inner protrusion 44 can be changed.

  The arcuate engagement protrusion 43 and the inner protrusion 44 are preferably arranged so that the central axes in the vertical direction coincide with each other, but the inner plug 33 can be attached and detached smoothly. For example, the arcuate engagement protrusions 43 and the inner protrusions 44 can be arranged with their center axes shifted.

1, 1 'Container with inner stopper 2, 2' Container body 3, 3 'Inner stopper 4, 4' Outer cap 5, 5 'Mouth 6, 6' Thread 7, 7 'Annular engagement protrusion 8 Outward protrusion Portion 9 Upper inclined surface 10 Recessed portion 11 Protruding portion 12 Side surface 13 Arc-shaped engagement protrusion 14 Inner protruding portion 15 Lower inclined surface 16 Spout 17 Insertion portion 18 Protruding portion 19 Upper inclined surface 20 Thread 21 Protrusion 31 Container with inner plug 32 Container body 33 Inner plug 34 Outer cap 35 Portion 36 Screw thread 37 Annular engagement protrusion 38 Outer protrusion 39 Upper inclined surface 40 Recess 41 Protrusion 42 Side surface 43 Arc-shaped engagement protrusion 44 Inner protrusion 45 Lower inclination Surface 46 Outlet 47 Insertion section 48 Groove 50 Thread 51 Projection

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 or above the annular engagement protrusion, protrude outward, and have an upward convex shape An outer protrusion composed of convex portions is formed,
An arcuate engagement protrusion that protrudes inwardly on the inner side surface of the inner plug and engages with the annular engagement protrusion, and is positioned above or below the arcuate engagement protrusion and inwardly. At least two inner protrusions that protrude and have a convex shape with the lower end protruding downward,
An upper inclined surface that is inclined and connected to the outer surface 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 and is in contact with the upper inclined surface is formed,
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 container with an inner stopper according to claim 1, wherein an upper surface of the annular engaging projection is inclined downward from an outer surface of the mouth portion.   The outer protrusions are each formed with recesses between the adjacent protrusions, and the protrusions and the recesses are alternately arranged, and the outer protrusions are also integrated with the periphery of the recesses of the outer protrusions. An upper inclined surface that is inclined and connected to the outer side surface 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 protruding portion. The container with an inner stopper according to claim 1 or 2, wherein the container is fitted in a concave portion between the convex portions.   The angle with the said upper inclined surface and the said lower inclined surface is 30-60 degrees, The container with an inside stopper of any one of Claims 1-3 characterized by the above-mentioned.