Container with cap and method for assembling same

Abstract

To allow an inside plug to be mounted on a mouth part of a body surely with a simple structure.SOLUTION: As a body 11, the body 11 is used in which a flange part 14 is formed on an outer periphery, in which a shoulder part 15 is formed at a position at a distance downward from the flange part 14, and in which this shoulder part 15 is formed in a conical shape which spreads downward and where an outer diameter of a lower end part is larger than an outer diameter of the flange part 14. An over-cap 19 integrated with an inside plug 18 in a centered state is placed on the body 11 from above. At that time, in the centered state, a portion 37 further on the upper side than a lower end part 35 in the over-cap 19 is guided to the flange part 14, and by allowing the lower end part 35 to be along the shoulder part 15 of the body 11, in the centered state, the lower end part is guided to this shoulder part 15, and then the over-cap 19 and the inside plug 18 are mounted on the body 11.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a container with a cap and a method for assembling the same. [Background technology]

[0002] A known type of capped container has a cylindrical body with a mouth formed at the top end, an inner stopper that is attached to the mouth, and an overcap that opens downwards and covers the inner stopper and the periphery of the mouth of the body. The inner stopper and the overcap are integrated with a screw-fitting structure, and the inner stopper and the overcap are attached to the body by screwing this integrated assembly into the body.

[0003] However, since the inner stopper is attached while covered by the overcap, the state of the stopper cannot be visually confirmed from the outside. Therefore, when the overcap is attached to the body, it is also impossible to visually confirm whether the inner stopper is securely attached to the mouth of the body.

[0004] To address this issue, in Patent Document 1, a guide wall portion is formed below the portion of the inside plug that is actually attached to the mouth of the body, and when the inside plug is attached to the body, this guide wall portion is centered with respect to the body, so that the inside plug is securely attached to the mouth. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2020-104886 A Summary of the Invention [Problem to be solved by the invention]

[0006] However, the guide wall of the inside plug does not function as a plug, but is, so to speak, a centering member separate from the inside plug that has been forcibly integrated with the inside plug, which poses the problem that the structure for attaching the inside plug and the overcap to the container becomes correspondingly complicated.

[0007] The present invention aims to solve these problems and provide a simple structure for a cylindrical body having a mouth formed at its upper end, which has an inner stopper attached to the mouth, and an overcap that opens downwards and covers the inner stopper and the periphery of the mouth of the body, such that the inner stopper can be securely attached to the mouth of the body with the simple structure. [Means for solving the problem]

[0008] To achieve this object, the capped container of the present invention comprises: A container with a cap, comprising a cylindrical body having a mouth at an upper end, an inner plug attached to the mouth, and an overcap that opens downward and covers the inner plug and the periphery of the mouth of the body, A flange is formed on the outer periphery of the body at a position lower than the opening end of the mouth portion, In the body The above Below the flange of a shoulder is formed at a position on the flange, the shoulder being formed in a cone shape expanding downward and the outer diameter of the lower end of the cone being larger than the outer diameter of the flange; The overcap has a top wall, a cylindrical bottom wall, and a protrusion protruding radially inward from the bottom wall, Attached to the body The overcap comprises: The protrusion but The above the flange portion is guided and centered around the lower end portion of the shoulder portion, and the lower end portion is attached to the body, a second gap between an outer circumferential end of a lower end of the shoulder portion of the body and an inner circumferential end of the lower end of the overcap is smaller than a first gap between an outer circumferential end of the flange portion and an inner circumferential end of the protrusion portion; a first distance, which is a distance between the flange portion and a lower end of the shoulder portion in an axial direction of the body, is smaller than a second distance, which is a distance between a lower end of the protrusion portion and the lower end portion in an axial direction of the overcap; The inside plug is integrated with the overcap in a centered state, With the gap between the body and the overcap becoming the second gapIt is characterized in that it is attached to the mouth of the body.

[0010] Furthermore, according to the capped container of the present invention, it is preferable that the protrusion is in the form of ribs formed at a plurality of positions spaced apart from each other in the circumferential direction of the bottom wall.

[0011] The method for assembling a capped container of the present invention includes the steps of: When attaching an inner plug to a cylindrical body having a mouth at its upper end, and an overcap that opens downward and covers the periphery of the inner plug and the mouth of the body, The body has a flange formed on the outer periphery at a position below the opening end of the mouth, and of A shoulder is formed at a position on the flange, the shoulder is formed in a conical shape that widens downward, and the outer diameter of the lower end of the cone is larger than the outer diameter of the flange. Using the body, The overcap is integrated with the inside plug in a centered state, and has a top wall, a cylindrical bottom wall, and a protruding portion protruding radially inward from the bottom wall. a second gap, which is a gap between an outer circumferential end of a lower end of the shoulder portion of the body and an inner circumferential end of the lower end of the overcap, is smaller than a first gap, which is a gap between an outer circumferential end of the flange portion of the body and an inner circumferential end of the protrusion portion of the overcap; A second distance, which is a distance between a lower end of the protrusion and the lower end of the overcap in the axial direction of the overcap, is smaller than a first distance, which is a distance between the flange portion and a lower end of the shoulder portion in the axial direction of the body. Ta The above body and said overcap Using The above Overcap from above The above When you put it on the body, In a state in which the first gap is formed, Overcap The protrusion is guided into the flange portion and brought into a centering state, With the second gap formed, The lower end The above Body The above By aligning it with the shoulder, the centering state is achieved by being guided by the shoulder, and then The overcap and the inner plug are attached to the body.

[0013] According to the method for assembling a capped container of the present invention, it is preferable to use an overcap in which the protrusions are in the form of ribs formed at multiple positions spaced apart along the circumferential direction of the bottom wall. Effect of the Invention

[0014] According to the present invention, the overcap is attached to the body with the portion above its lower end guided by the flange in a centered state, and with its lower end aligned along the shoulder of the body in a centered state guided by this shoulder, so that it is reliably centered with respect to the body, and therefore the inside plug, which is integrated with the overcap in a centered state, is also attached to the body in a centered state with respect to the body, so that this inside plug can be reliably attached to the mouth of the body. In other words, according to the present invention, the overcap is centered with the body at two positions, top and bottom, so that reliable centering is possible, and therefore the inside plug is also reliably centered with respect to the body, so that the inside plug can be reliably attached to the mouth of the body with a simple structure. [Brief description of the drawings]

[0015] [Figure 1] 1 is an overall view of a capped container according to an embodiment of the present invention; [Diagram 2] FIG. 2 is an enlarged view of a main part in FIG. [Diagram 3] FIG. 3 is a bottom view of the overcap shown in FIG. 2. [Figure 4] FIG. 13 shows the overcap and stopper during assembly to the body. [Diagram 5] 5 shows the next stage of FIG. 4 in which the overcap and the stopper are being assembled to the body. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] 1 to 3 show a capped container according to an embodiment of the present invention. Here, 11 denotes the body of the container, which is formed into a cylindrical shape by molding using synthetic resin or the like. The body 11 has a mouth 12 formed at its upper end. The mouth 12 is formed to have a smaller diameter than the other parts of the body 11. A flange 14 is integrally formed on the outer periphery of the mouth 12, i.e., on the outer periphery of the body 11 at a position slightly lower than the upper end edge 13 of the mouth 12. A cone-shaped shoulder 15 that spreads downward is provided at a position spaced below the flange 14. That is, the narrow-diameter mouth 12 is configured to be continuous with the part of the body 11 below it via the shoulder 15. 16 denotes a wall of the body 11. The cross-sectional structure of the shoulder 15 will be described. The shoulder 15 is continuous with the mouth 12 and the lower part of the body 11 via upper and lower curved parts 17, 17. A reinforcing rib 20 is formed around the entire outer periphery of the body 11 below the shoulder portion 15 and protrudes radially outward.

[0017] An inner plug 18 and an overcap 19 are attached to the body 11. The inner plug 18 and the overcap 19 are also molded from synthetic resin or the like.

[0018] The inside plug 18 has an annular groove 21 that opens downward at its lower end, and the mouth 12 of the body 11 fits tightly into this annular groove 21, allowing the inside plug 18 to be attached to the body 11 in a fixed state. A release member 22 is provided in the center of the inside plug 18 when it is attached to the body 11 and before it is opened. This release member 22 is connected to the spouting tube 24 of the inside plug 18 via a weakened portion 23. An outer thread 25 is formed on the outer periphery of the inside plug 18, and an inner thread 26 of the overcap 19 is screwed onto this outer thread 25, so that the inside plug 18 and the overcap 19 are integrated in a centered state.

[0019] The release member 22 is provided with a cylindrical portion 27, which is fitted into an annular groove 28 of the overcap 19. Although detailed illustration is omitted, uneven portions are formed on the inner and outer peripheries of the cylindrical portion 27, and when the cylindrical portion 27 is fitted into the annular groove 28 of the overcap 19, the uneven portion of the cylindrical portion 27 meshes with another uneven portion formed in the annular groove 28 of the overcap 19, so that the overcap 19 and the release member 22 held by the overcap 19 can rotate together.

[0020] The overcap 19 is provided with an annular wall portion 31, and when the overcap 19 is screwed onto the inner plug 18 using the outer threads 25 and the inner threads 26, this annular wall portion 31 is fitted into the opening at the upper end of the dispensing tube 24 of the inner plug 18, so that the dispensing tube 24 is sealed and closed by the overcap 19.

[0021] The flange portion 14 of the body 11 is formed integrally with the outer periphery of the body 11 at a position lower than the upper opening end of the mouth portion 12, more specifically, at a position lower than the portion of the body 11 where the inner plug 18 is attached.

[0022] The overcap 19 is formed with a downward opening and has a top wall 33 and a cylindrical bottom wall 34 integrally formed. The bottom wall 34 is configured so that when the overcap 19 is attached to the body 11, its lower end 35 fits externally into a cylindrical portion 36 of the body 11 below the shoulder portion 15 and above the rib 20 without leaving a large gap in the radial direction. The bottom wall 34 of the overcap 19 is formed with a protruding portion 37 protruding radially inward in a position other than the lower end 35, i.e., above the lower end 35, in the form of a rib with the vertical direction as its longitudinal direction. The protruding height of the protruding portion 37 is set to a height such that when the overcap 19 is attached to the body 11 or when it has been attached, no large gap is formed between the protruding end and the radial tip end of the flange portion 14 of the body 11.

[0023] As a result of the above, the overcap 19 and the inner plug 18 are attached to the body 11 in a centered state with respect to the body 11 by the interaction between the flange portion 14 and the protrusion 37 of the overcap 19, and by the interaction between the cylindrical portion 36 below the shoulder portion 15 of the body 11 and the lower end portion 35 of the bottom wall 34.

[0024] For this reason, the overcap 19 is reliably centered relative to the body 11, and as a result, the inner plug 18 which is integrated into the overcap 19 in a centered state as described above is also attached to the body 11 in a centered state relative to the body 11, so that the inner plug 18 can be reliably attached to the mouth 12 of the body 11.

[0025] Next, the procedure for mounting the overcap 19 will be described. In this process, the body 11 is supported by the retainer 40 that contacts the rib 20 from below, and the overcap 19 and the inner plug 18, which are integrated in a centered state, are then plugged from above downwards to cover the mouth 12 of the body 11. Then, although not shown, the lower end 35 of the overcap 19 is first fitted onto the flange 14 of the body 11. At this time, as can be seen from Figs. 1 and 2, a predetermined amount of gap is formed in the radial direction between the lower end 35 and the flange 14. For this reason, the overcap 19 cannot be said to be centered by the flange 14, but rather the lower end 35 is roughly aligned in the radial direction with respect to the flange 32, i.e., the position is corrected with respect to the body 11.

[0026] When the overcap 19 and the inside plug 18 are moved downward from this state, as shown in FIG. 4, the lower end of the protrusion 37 is guided to the flange 14 before the inside plug 18 reaches the mouth 12. This causes the flange 14 and the protrusion 37 to be centered, and the overcap 19 is centered with respect to the body 11 at the position of the lower end of the protrusion 37. At the same time, the inside plug 18 is centered with respect to the mouth 12 of the body 11 at the centering level. In detail, the annular groove 21 of the inside plug 18 is centered with respect to the mouth 12 by this centering. In this case, for example, when the outer diameter of the body 11 is about 40 mm, it is preferable that the gap S1 between the outer peripheral end of the flange 14 and the radially inward tip of the protrusion 37 is about 0.5 mm.

[0027] When the overcap 19 and the inside plug 18 are further moved downward from this state, the annular groove 21 of the inside plug 18 approaches the upper edge 13 of the mouth portion 12 of the body 11 as shown in Fig. 5, and the lower end 35 of the overcap 19 is guided by the shoulder portion 15 of the body 11, so that the overcap 19 is centered relative to the body 11. In this case, when the outer diameter of the body 11 is about 40 mm as described above, it is preferable that the gap S2 between the lower end of the shoulder portion 15, i.e., the outer peripheral end of the upper end of the cylindrical portion of the body, and the inner peripheral end of the lower end of the overcap 19 is about 0.2 mm. At the same time, the protruding portion 37 of the overcap is guided by the flange portion 14 as described above, so that the protruding portion 37 is centered relative to the flange portion 14. At this time, as shown in Fig. 5, the position where the lower end 35 of the overcap 19 is centered with respect to the body 11 and the position where the protruding portion 37 of the overcap is centered with respect to the flange portion 14 are spaced apart in the height direction, so that the overcap 19 is centered with respect to the body 11 at two positions spaced apart by a distance D in the height direction, i.e., in the axial direction of the body 11 and the overcap 19, thereby achieving a reliable centering state. When the outer diameter of the body 11 is about 40 mm, as described above, this distance D is preferably 10 mm or more. At this time, the inside plug 18 is also reliably centered with respect to the mouth portion 12 of the body 11.

[0028] Therefore, when the overcap 19 and the inside plug 18 are further moved downward from the state shown in Fig. 5, the inside plug 18 is placed over the mouth portion 12 of the body 11 in such a manner that the upper end portion 13 of the mouth portion 12 of the body 11 enters the annular groove 21 of the inside plug 18. At this time, since the inside plug 18 is also reliably centered with respect to the mouth portion 12 of the body 11 as described above, the inside plug 18 can be properly attached to the mouth portion 12 of the body 11 without fail, even though the inside plug 18 and the mouth portion 12 of the body 11 cannot be seen from the outside because they are covered by the overcap 19. Moreover, the inside plug 18 can be reliably attached to the mouth portion 12 of the body 11 with only a very simple configuration in which the flange portion 14 is formed on the body 11 and the protrusion portion 37 is formed on the overcap 19, without using a mechanism of a complicated structure.

[0029] When the overcap 19 is rotated in the opening direction after the inside plug 18 and the overcap 19 are attached to the body 11, the outside thread 25 of the inside plug 18 and the inside thread 26 of the overcap 19 rotate relatively to each other because the inside plug 18 is attached to the body 11 in a tightly fastened state. Then, the release member 22 is held by the overcap 19 and rotates together as described above, which breaks the weakened portion 23, and as a result, an opening is formed in the pouring tube 24 of the inside plug 18. At that time, the release member 22 is accommodated in the overcap 19. Thereafter, the overcap 19 can be unscrewed from the inside plug 18 to pour out the contents of the body 11 of the container. After pouring, the overcap 19 is screwed back onto the inside plug 18, so that the annular wall portion 31 fits into the opening at the top end of the pouring tube 24, and the pouring tube 24 is sealed and closed by the overcap 19. [Explanation of symbols]

[0030] 11. Body 12 Mouth 14. Flange 15 Shoulder 18 Inner stopper 19 Overcap 35 Lower end 37 Protrusion

Claims

1. A container with a cap, comprising a cylindrical body having a mouth at an upper end, an inner plug attached to the mouth, and an overcap that opens downward and covers the inner plug and the periphery of the mouth of the body, A flange is formed on the outer periphery of the body at a position lower than the opening end of the mouth portion, a shoulder portion is formed in the body at a position below the flange portion, the shoulder portion being formed in a conical shape expanding downward and having an outer diameter at a lower end of the conical shape larger than an outer diameter of the flange portion; The overcap has a top wall, a cylindrical bottom wall, and a protrusion protruding radially inward from the bottom wall, the overcap is attached to the body with the protrusion guided by the flange and the lower end guided by the shoulder, a second gap between an outer circumferential end of a lower end of the shoulder portion of the body and an inner circumferential end of the lower end of the overcap is smaller than a first gap between an outer circumferential end of the flange portion and an inner circumferential end of the protrusion portion; a second distance, which is a distance between a lower end of the protrusion and the lower end of the overcap in an axial direction of the body, is smaller than a first distance, which is a distance between the flange portion and a lower end of the shoulder portion in an axial direction of the body; A container with a cap, characterized in that the inside stopper is integrated with the overcap in a centered state, and is attached to the mouth of the body with a gap between the body and the overcap forming a second gap.

2. 2. The capped container according to claim 1, wherein the protrusion is in the form of a rib formed at a plurality of positions spaced apart from each other along the circumferential direction of the bottom wall.

3. When attaching an inner plug to a cylindrical body having a mouth at its upper end, and an overcap that opens downward and covers the periphery of the inner plug and the mouth of the body, The body has a flange formed on the outer periphery at a position lower than the opening end of the mouth, a shoulder formed at a position lower than the flange, the shoulder formed in a conical shape expanding downward, and the outer diameter of the lower end of the conical shape is made larger than the outer diameter of the flange, The overcap is integrated with the inside plug in a centered state, and has a top wall, a cylindrical bottom wall, and a protruding portion protruding radially inward from the bottom wall. a first gap, which is a gap between an outer circumferential end of the lower end of the shoulder portion of the body and an inner circumferential end of the lower end of the overcap, is smaller than a first gap, which is a gap between an outer circumferential end of the flange portion of the body and an inner circumferential end of the protrusion portion of the overcap; a first distance, which is a distance between the flange portion and a lower end of the shoulder portion in an axial direction of the body, and a second distance, which is a distance between a lower end of the protrusion portion and the lower end of the overcap, in an axial direction of the overcap, is smaller than a first distance, which is a distance between the flange portion and a lower end of the shoulder portion in an axial direction of the body; The overcap is placed on the body from above, and at that time, With the first gap formed, the protrusion of the overcap is guided by the flange to be in a centered state, and with the second gap formed, the lower end is aligned along the shoulder of the body to be in a centered state guided by the shoulder, A method for assembling a capped container, comprising the steps of attaching the overcap and the inner plug to the body.

4. A method for assembling a capped container as described in claim 3, characterized in that the overcap has a protrusion in the form of a rib formed at a plurality of positions spaced apart along the circumferential direction of the bottom wall.

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