Cap body

Abstract

To provide a cap body capable of suppressing rotational torque during opening / closing of the cap body while improving the sealability of a vial container.SOLUTION: A cap body B comprises: a screw cap C engaged with a mouth 1 of a vial container A; and a seal member D fitted to the inside of the crew cap C. The screw cap C is provided with a top wall 10; an outer peripheral wall 11 drooped from the peripheral edge of the top wall 10, and a fitting projection 12 formed in the inner periphery of the outer peripheral wall 11. The seal member D is provided with a top wall 20 having an outer edge 24 fitted to the fitting projection 12 and a bottom surface 22 sealable to a mouth upper surface 3, an inner ring 21 drooped from the top wall 20 toward a mouth inner peripheral surface 4, and an outer ring 23 drooped from the outside of the inner ring 21 toward a mouth outer peripheral surface 5. The outer ring 23 adheres to the mouth outer peripheral surface 5 during closing to abut against or come close to the fitting projection 12.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a cap body for sealing a glass bottle container, and more particularly to a cap body used for recapping a glass bottle container sealed with a crown cap. [Background technology]

[0002] Conventionally, after a glass bottle is filled with a liquid content such as a carbonated drink, a crown is fitted onto the opening of the glass bottle to seal the inside of the glass bottle.

[0003] Therefore, in order to use the liquid contained in the glass bottle, the crown cap must be removed from the glass bottle, which poses the problem that the glass bottle cannot be recapped even if the liquid remains. To solve this problem, a cap body for recapping has been conventionally known to ensure the hermeticity of a glass bottle container after the crown cap is removed (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 5-68863 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the dispensing tap (cap body) described in Patent Document 1 above had the problem that the re-capping dispensing tap opens and closes the lid body via a hinge, making it unable to be used with glass bottle containers filled with sparkling liquid such as carbonated drinks. Furthermore, glass bottle containers, which have their mouths sealed with crown caps, do not have mirror-finished surfaces around the mouths, which makes the mouth surfaces rough and causes problems with sealing when the cap is closed, leading to the risk of liquid leakage. Glass bottle containers also have the problem of lower molding precision than synthetic resin containers.

[0006] The present invention aims to solve the above problems and to provide a cap body that can improve the sealing performance of a glass bottle container while suppressing the rotational torque when opening and closing the cap body. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention provides a cap body comprising a screw cap that is screwed onto the mouth of a glass bottle container and a sealing member that is attached to the inside of the screw cap, wherein the screw cap has a top wall, an outer peripheral wall that hangs down from the periphery of the top wall, and an attachment protrusion formed on the inner periphery of the outer peripheral wall, and the sealing member has an outer edge that is Screw cap Attachment protrusion and onto the inner upper part of the outer wall The container has a top wall that is attached to the top wall and whose lower surface can be in close contact with the upper surface of the mouth, an inner ring that hangs down from the top wall toward the inner peripheral surface of the mouth, and an outer ring that hangs down from the outside of the inner ring toward the outer peripheral surface of the mouth, and when the lid is closed, the outer ring The inner surface It adheres to the outer surface of the mouth, The outer surface Attachment protrusion pressed by the contact of The present invention employs a configuration characterized by the above.

[0008] In one embodiment of the cap body, the top wall of the sealing member has an inclined surface portion formed on the underside between the outer periphery of the inner ring and the inner periphery of the outer ring, the inclined surface portion being formed outwardly and downwardly from the outer periphery of the inner ring, and a flat surface portion formed from the outer edge of the inclined surface portion being formed toward the inner periphery of the outer ring, and the cap body employs a configuration characterized in that, when screwed onto a glass bottle container, a gap is formed between the upper outer periphery of the inner ring, the inclined surface portion on the underside of the top wall, and the upper surface of the mouth, and the inner ring is The outer periphery has an upper outer periphery that expands from top to bottom, a lower outer periphery that narrows from top to bottom, and a protruding outer periphery. The sealing member may have a notch formed in the outer edge of the top wall. [Effects of the Invention]

[0009] By adopting the above-described configuration, the cap body of the present invention can tightly seal the sealing member to prevent the contents from leaking from the mouth of the glass bottle container when the screw cap is screwed onto the glass bottle container to close it, and can also suppress the rotational torque when opening and closing the cap body. [Brief explanation of the drawings]

[0010] [Figure 1] 1A and 1B are diagrams showing a state in which a glass bottle container is closed with a cap body according to an embodiment of the present invention, in which (a) is a longitudinal cross-sectional view and (b) is an enlarged view of a main part of (a). [Figure 2] 1A and 1B are diagrams showing a screw cap constituting a cap body according to an embodiment of the present invention, in which FIG. 1A is a longitudinal cross-sectional view and FIG. 1B is a bottom view. [Figure 3] 1A to 1C are diagrams showing a sealing member constituting a cap body according to an embodiment of the present invention, in which (a) is a longitudinal cross-sectional view, (b) is a bottom view, and (c) is an enlarged view of a main part of (a). [Figure 4] 1A and 1B are diagrams showing the state changes when a glass bottle container is closed with a cap body according to an embodiment of the present invention, where (a) is an enlarged view of the main part at the start of closing, and (b) is an enlarged view of the main part at the end of closing. DETAILED DESCRIPTION OF THE INVENTION

[0011] Next, an embodiment of the cap body of the present invention will be described with reference to the drawings. In the following description, in FIG. 1(a), the upward direction is referred to as "upper", the downward direction is referred to as "lower", the vertical direction is referred to as "axial direction", and the left-right direction is referred to as "radial direction". [Example]

[0012] In Figure 1, A is a glass bottle container into which a liquid such as a carbonated drink is filled, and B is a cap body for resealing the glass bottle container A. It is composed of two parts: a screw cap C that is screwed onto the mouth part 1 of the glass bottle container A, and a sealing member D that is attached to the inside of the screw cap C. The screw cap C is made of a hard material such as PP, and the sealing member D is made of an elastically deformable material that is softer than the screw cap C, such as PE. In this embodiment, glass bottle container A is filled with the liquid content, sealed with a crown cap, and shipped. When in use, the crown cap is removed from glass bottle container A, the liquid content is poured out, and if any liquid content remains, the cap body B is used for recapping.

[0013] The glass bottle container A has a cylindrical mouth portion 1 at the top that is closed with a cap body B, and a male screw 2 is screwed on the outer periphery of the mouth portion 1. As shown in Figure 1(b), the mouth portion 1 has a flat upper surface 3 at the top end, an inner peripheral surface 4 extending vertically in the axial direction from the inner edge of the upper surface 3, and an outer peripheral curved surface 5 that curves downward from the outer edge of the upper surface 3.

[0014] As shown in Figures 1 and 2, the screw cap C has a disk-shaped top wall 10 and an outer peripheral wall 11 that hangs down from the periphery of the top wall 10 and is screwed onto the outer periphery of the mouth 1 of the glass bottle container A. The upper inner periphery of the outer peripheral wall 11 is provided with an engaging protrusion 12 that the outer edge 24 of the sealing member D passes over when the cap body B is set, preventing the sealing member D from falling off. The lower inner periphery of the outer peripheral wall 11 is provided with a female thread 13 that screws into the male thread 2 of the mouth 1 when the lid is closed. In this embodiment, the engaging projection 12 is formed in a continuous ring shape, but the engaging projection 12 may be formed intermittently.

[0015] As shown in Figures 1 and 3, the sealing member D comprises a disk-shaped top wall 20, an inner ring 21 hanging down from the underside of the top wall 20 toward the inner surface 4 of the mouth 1, an outer peripheral underside portion 22 formed radially from the outer periphery of the inner ring 21 on the underside of the top wall 20, and a thin-walled outer ring 23 hanging down from the outer edge of the outer peripheral underside portion 22 toward the outer curved surface 5 of the mouth 1. When set, the outer edge portion 24 of the top wall 20 climbs over the engagement protrusion 12 of the screw cap C and is set on the upper inner periphery of the outer peripheral wall 11, and the upper surface of the top wall 20 is close to or abuts the underside of the top wall 10, and is attached.

[0016] As shown in Figure 3(c), the outer periphery of the inner ring 21 is formed with a protruding outer periphery 25 that is formed in an inverted L-shape (the opposite side in the figure is L-shaped) consisting of an upper outer periphery surface 25a that widens from top to bottom, with the center being the widest point outward, and a lower outer periphery surface 25b that narrows from top to bottom. In this embodiment, the angle θ1 between the upper outer peripheral surface 25a and the axial direction is set to 6°, but is preferably in the range of 3° to 10°. In addition, the angle θ2 between the lower outer peripheral surface 25b and the axial direction is set to 17°, but is acceptable as long as it is in the range of 10° to 45°. The inner periphery of the inner ring 21 is formed into a vertical surface shape in consideration of formability.

[0017] The outer peripheral lower surface portion 22 is formed with a flat surface portion 22a that is formed flat in the radial direction from the outside, and an inclined surface portion 22b that slopes upward and inward from the inner edge of the flat surface portion 22a and extends to the protruding outer peripheral portion 25 of the inner ring 21. The outer edge 24 of the top wall 20 has recessed notches 27 at predetermined positions (two opposing positions in this embodiment).

[0018] The outer ring 23 extends downward from the outer edge of the flat surface portion 22a of the outer peripheral lower surface portion 22, and is formed thin-walled so that when the sealing member D is set in the screw cap C, its tip is lower than the engaging protrusion 12 of the screw cap C.

[0019] In the cap body B of this embodiment, when the screw cap C and the glass bottle container A are screwed together, the sealing member D is sandwiched between the underside of the top wall 10 of the screw cap C and the upper end of the mouth 1 of the glass bottle container A. As shown in FIG. 1, the upper outer surface 25a of the protruding outer peripheral portion 25 of the inner ring 21 of the sealing member D abuts against the inner peripheral surface 4 of the mouth 1 of the glass bottle container A to form a sealing portion s1, the flat surface portion 22a of the outer peripheral lower surface portion 22 abuts against the upper peripheral surface 3 of the mouth 1 to form a sealing portion s2, the outer surface 23b and the inner surface 23a of the outer ring 23 are sandwiched between the engaging protrusion 12 of the outer peripheral wall 11 of the screw cap C and the outer peripheral curved surface 5 of the mouth 1, and the inner surface 23a of the outer ring 23 is in close contact with the outer peripheral curved surface 5 of the mouth 1 to form a sealing portion s3.

[0020] In particular, the outer ring 23 is formed thinly, so that it has good conforming deformation, and the outer surface 23b of the engaging projection 12 abutment When pressed against the glass bottle container A, the inner surface 23a is deformed to conform to the shape of the outer circumferential curved surface 5 of the mouth of the glass bottle container A and is tightly attached. Between the seal portion s1 and the seal portion s2, a gap α is formed by the upper outer peripheral surface 25a of the inner ring 21, the inclined surface portion 22b of the outer peripheral lower surface portion 22, and the upper surface 3 of the mouth portion.

[0021] Next, the manner of use and the effects of this embodiment will be described. In the cap body B of this embodiment, first, the seal member D is pushed into the inside of the screw cap C and set. When setting, the outer edge 24 of the top wall 20 of the sealing member D climbs over the engaging protrusion 12 and is attached to the upper inner periphery of the outer wall 11. At this time, the air present between the upper surface of the top wall 20 of the sealing member D and the lower surface of the top wall 10 of the screw cap C is expelled through the notch 27 of the outer edge 24, and the upper surface of the sealing member D and the lower surface of the top wall 10 of the screw cap C abut against each other, completing the setting.

[0022] Next, the cap body B, in which the sealing member D is set on the screw cap C, is attached to the glass bottle container A, which is filled with the liquid and sealed with a crown cap, as a recapping tool, and then shipped. When using the liquid content, the crown is removed from the glass bottle container A and the liquid content is poured out, but if the liquid content remains after pouring out, the glass bottle container A is closed with the re-capping cap body B to reseal it.

[0023] Regarding the closure of the glass bottle container A by the cap body B, as shown in Figure 4(a), first, the sealing member D attached to the lowered screw cap C abuts the upper end of the inner peripheral surface 4 of the mouth of the glass bottle container A against the lower outer peripheral surface 25b of the protruding outer peripheral portion 25 of the inner ring 21. As the screw cap C is further screwed, the lower outer peripheral surface 25b of the protruding outer peripheral portion 25 of the inner ring 21 is pressed into the mouth portion 1 while being in sliding contact with the mouth portion inner peripheral surface 4. Furthermore, as the sealing member D continues to descend together with the screw cap C, the upper end of the mouth inner surface 4 passes over the most protruding part of the protruding outer periphery 25, abuts against the upper outer periphery 25a, and slides while pushing the inner ring 21 inward from the tip side.

[0024] When the cap body B has been closed on the glass bottle container A, the sealing member D is sandwiched between the underside of the top wall 10 of the screw cap C and the mouth portion 1 of the glass bottle container A, and as shown in Figures 1 and 4(b), the inner ring 21, outer peripheral underside portion 22, and outer ring 23 of the sealing member D abut against the mouth portion 1 of the glass bottle container A to form sealing portions s1, s2, and s3.

[0025] The inner ring 21 is deformed by being pushed inward from the tip side by the inner surface 4 of the mouth portion, and the upper outer surface 25a of the inner ring 21 and the inner surface 4 of the mouth portion come into surface contact, and the restoring force of the inner ring 21 presses it against the inner surface 4 of the mouth portion, so that the sealing portion s1 is tightly adhered. In addition, when the outer surface 23b of the outer ring 23 is pressed by the engaging protrusion 12 of the screw cap C, it deforms to conform to the shape of the outer curved surface 5 of the mouth portion, increasing the contact area and making the sealing portion s3 more closely fitted.

[0026] The cap body B of this embodiment has an inner ring 21 with a protruding outer periphery 25 that protrudes in an inverted L-shape and is composed of an upper outer periphery 25a and a lower outer periphery 25b. When the lid is closed, the inner ring 21 itself is pressed against the mouth inner periphery 4 as a sealing portion s1 that makes surface contact with the mouth inner periphery 4, with the upper outer periphery 25a having an angle θ1 with the axial direction set in the range of 3° to 10°.Therefore, even if the area of ​​contact of the sealing portion s1 of the inner ring 21 is small, tight contact can be maintained and the height of the inner ring 21 can be made lower than conventional ones. Furthermore, when the lid is closed, the outer ring 23 deforms to follow the shape of the outer curved surface 5 of the mouth portion, increasing the contact area and being pressed against it, forming a tight seal as the sealing portion s3, thereby maintaining a more secure seal. Even if the liquid contained in the glass bottle container A is a sparkling liquid such as a carbonated drink, the tight adhesion between the glass bottle container A and the sealing member D can be maintained, so that the liquid contained will not leak even if the container is turned sideways.

[0027] To open the glass bottle container A, the cap body B is rotated in the opening direction relative to the glass bottle container A, and the lid is easily opened. When the lid is opened, the sealing member D rises together with the screw cap C, and as the sealing portion s2 comes off, the engaging protrusion 12 of the screw cap C moves away from the outer ring 23 of the sealing member D, the pressure against the outer ring 23 is eliminated, the deformation is restored, and the sealing portion s3 with the outer curved surface 5 of the mouth portion is released and rises. Finally, when the inner ring 21 of the seal member D comes out from the inner peripheral surface 4 of the opening, the seal portion s1 comes off and the lid is opened.

[0028] When the cap body B of this embodiment is opened, the seal portion s3 with the outer ring 23 is easily released immediately, the height of the inner ring 21 can be lowered, and a gap α is formed between the seal portion s1 and the seal portion s2 by the upper outer peripheral surface 25a of the inner ring 21, the inclined surface portion 22b of the outer peripheral lower surface portion 22, and the upper surface 3 of the mouth portion. Therefore, the range of contact between the seal portion s1 and the seal portion s2 with the inner ring 21 and the outer peripheral lower surface portion 22 and the mouth portion 1 is reduced, and they can be easily released, so the rotational torque when opening the cap can be reduced compared to conventional caps.

[0029] When the cap body B is to be closed again, the screw cap C is screwed onto the mouth portion 1 of the glass bottle container A, and the mouth portion 1 of the glass bottle container A is hermetically closed by the sealing member D. The cap body B of this embodiment can suppress the rotational torque when opening and closing, and can be used stably for repeated sealing and unsealing. [Industrial Applicability]

[0030] The cap body of the present invention can be widely used as a cap body for re-capping glass bottle containers that are filled with contents that build up internal pressure, such as carbonated beverages, and that are sealed with crown caps, because when the screw cap is screwed onto the glass bottle container to close it, the sealing member can tightly seal the contents to prevent leakage from the mouth of the glass bottle container, and the rotational torque when the cap body is opened and closed can be suppressed. [Explanation of symbols]

[0031] A. Glass bottle container B Cap body C screw cap D sealing material s1, s2, s3 seal parts α Gap θ1, θ2 angle 1 Mouth 2 male threads 3 Top of mouth 4 Inner circumference of mouth 5 Mouth outer circumference curved surface (mouth outer circumference surface) 10. Top Wall 11. Peripheral wall 12. Tied to the protrusion 13 female ねじ 20 sky walls 21 インナーリング 22 Lower outer periphery 22a Flat face 22b Tiltped face 23 アウターリング 23a Inner surface 23b Outer surface 24 Waibu 25. Prominent outer periphery 25a Upper outer circumference 25b Lower outer periphery 27 owe き

Claims

1. A cap body comprising a screw cap that is screwed onto the mouth of a glass bottle container and a sealing member that is attached to the inside of the screw cap, The screw cap has a top wall, an outer peripheral wall extending downward from the periphery of the top wall, and an engaging projection formed on the inner periphery of the outer peripheral wall, The sealing member includes a top wall whose outer edge rides over the engaging projection of the screw cap and is engaged with the upper inner periphery of the outer periphery wall, and whose lower surface can be in close contact with the upper surface of the mouth portion, an inner ring hanging down from the top wall toward the inner periphery of the mouth portion, and an outer ring hanging down from the outside of the inner ring toward the outer periphery of the mouth portion, The cap body is characterized in that, when the lid is closed, the inner surface of the outer ring is in close contact with the outer peripheral surface of the opening, and the outer surface is pressed against it by the engagement projection.

2. The top wall of the seal member has, on a lower surface between the outer periphery of the inner ring and the inner periphery of the outer ring, an inclined surface portion formed from the outer periphery of the inner ring toward the outer downward side, and a flat surface portion formed from the outer edge of the inclined surface portion toward the inner periphery of the outer ring, 2. The cap body according to claim 1, wherein, when the cap body is screwed onto a glass bottle container, a gap is formed between the upper outer periphery of the inner ring, the inclined surface portion of the lower surface of the top wall, and the upper surface of the mouth portion.

3. The cap body according to claim 1 or 2, characterized in that the inner ring has an upper outer peripheral surface that expands from top to bottom and a lower outer peripheral surface that narrows from top to bottom, with the diameter expanding most outward at the center, forming a protruding outer peripheral portion.

4. 3. The cap body according to claim 1, wherein the sealing member has a notch formed in an outer edge portion of the top wall.

5. 4. The cap body according to claim 3, wherein the sealing member has a notch formed in the outer edge of the top wall.

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