Tube container

Abstract

To provide a tube container whose weakened part can be stably broken when opened.SOLUTION: A tube container 1 includes: a tube container body 2 having a mouth portion 2a and a body portion 2b extending downward from the mouth portion 2a; a lid 3 that can open and close the mouth 2a. The mouth 2a has a mounting portion 4 on an outer circumferential surface, and the lid 3 is mounted on the mounting portion 4 in a detachable manner by relative rotation in one circumferential direction. The tube container further includes: a transition portion 5 having an engagement portion 5a that is fitted to the lid 3 so as to be rotatable together with the lid toward one circumferential side; and a weakened portion 6 that connects the transition portion 5 to the mouth portion 2a below the engagement portion 5a. The transition portion 5 is made of a solid portion 5b at least at a predetermined height position, the predetermined height position being any height position between a lower end of the engagement portion 5a and a lower end of the transition portion 5, and the transition portion 5 transitions from the tube container body 2 side to the lid 3 side due to a rupture of the weakened portion 6 when the lid is opened.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a tube container. [Background technology]

[0002] A tube container is known which has a tube container body having a mouth, and a lid which can open and close the mouth, the mouth having an attachment portion on its outer peripheral surface, and the lid which is releasably attached to the attachment portion by relative rotation in one circumferential direction, the tube container having a transition portion having an engagement portion which fits into the lid so as to be rotatable together with the lid in one circumferential direction, and a weakened portion which connects the transition portion to the mouth below the engagement portion, the transition portion moving from the tube container body side to the lid side as the weakened portion breaks when the lid is opened (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2023-6189 A Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a tube container whose weakened portion can be stably broken when opened. [Means for solving the problem]

[0005] One aspect of the present invention is as follows.

[0006] [1] a tube container body having a mouth portion and a body portion extending downward from the mouth portion; A lid capable of opening and closing the mouth portion, The mouth portion has a fitting portion on an outer circumferential surface, The lid is attached to the attachment portion in a detachable manner by relative rotation in one circumferential direction, a transition portion having an engagement portion that is fitted to the lid so as to be rotatable together with the lid toward one side in the circumferential direction; a weakened portion connecting the transition portion to the mouth portion below the engagement portion, the transition portion is made of a solid portion at least at a predetermined height position, the predetermined height position being any height position between a lower end of the engagement portion and a lower end of the transition portion, The transition portion transitions from the tube container body side to the lid side by breaking the weakened portion when the lid is opened.

[0007] [2] The weakened portion is continuous with a lower end of the transition portion, The tube container according to [1], wherein the transition portion is made of the solid portion from the lower end of the transition portion to the height of the upper end of the engagement portion.

[0008] [3] The tube container body includes a tube body having a barrier property and an end member integrated with the tube body, The end member is composed of a resin molded layer and an aluminum layer located inside the resin molded layer, and has the mouth portion, the weakened portion, and the transition portion. The tube container described in [1] or [2].

[0009] [4] The outer peripheral surface of the lower end of the transition portion has a reduced diameter portion, The weakened portion connects a lower end of the transition portion and an upper end of the mouth portion, The tube container according to [1], wherein the transition portion has a hollow portion extending from a lower end of the transition portion to the specified height. Effect of the Invention

[0010] According to the present invention, it is possible to provide a tube container in which the weakened portion can be stably broken when opened. [Brief description of the drawings]

[0011] [Figure 1] FIG. 1 is a cross-sectional view showing an unopened tube container in a first embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view showing the tube container of FIG. 1 when opened. [Diagram 3] FIG. 4 is a cross-sectional view showing an unopened tube container in a second embodiment of the present invention. [Figure 4] FIG. 4 is a cross-sectional view showing the tube container of FIG. 3 when opened. [Diagram 5] FIG. 11 is a cross-sectional view showing an unopened tube container in a third embodiment of the present invention. [Figure 6] FIG. 6 is a cross-sectional view showing the tube container of FIG. 5 when opened. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0013] As shown in Figs. 1 and 2, a tube container 1 according to a first embodiment of the present invention has a tube container body 2 having a mouth 2a and a body 2b extending downward from the mouth 2a, and a lid 3 capable of opening and closing the mouth 2a. The mouth 2a has an attachment portion 4 on its outer circumferential surface, and the lid 3 is detachably attached to the attachment portion 4 by relative rotation in one circumferential direction. The tube container has a transition portion 5 having an engagement portion 5a that fits into the lid 3 so as to be rotatable together with the mouth 2a in one circumferential direction, and a weakened portion 6 that connects the transition portion 5 to the mouth 2a below the engagement portion 5a. The transition portion 5 is made of a solid portion 5b at least at a predetermined height position, and the predetermined height position is any height position from the lower end of the engagement portion 5a to the lower end of the transition portion 5. When the lid is opened, the transition portion 5 moves from the tube container body 2 side to the lid 3 side due to the rupture of the weakened portion 6. In this embodiment, the up-down direction is the direction along the central axis O of the mouth portion 2a, the up is the direction from the tube container body 2 side toward the lid 3 side along the up-down direction, the down is the opposite direction to the up, the circumferential direction is the direction going around the central axis O, and the radial direction is the direction perpendicular to the central axis O.

[0014] According to the above configuration, the weakened portion 6 breaks when the container is opened, so that the user can sense that the container is unopened by the feeling of the breakage. In addition, since the transition portion 5 has a solid portion 5b at a predetermined height from the lower end of the engagement portion 5a to the lower end of the transition portion 5, the rigidity of the transition portion 5 at the portion connected to the weakened portion 6 can be improved compared to the case where the transition portion 5 has a hollow portion extending upward from the lower end to the upper end of the transition portion 5 as in the above-mentioned Patent Document 1. Therefore, when the lid 3 is rotated in the opening direction, the engagement portion 5a and the protruding portion 3a1 described later are well engaged with each other, and the transition portion 5 is not twisted. Therefore, a tube container 1 in which the weakened portion 6 can be stably broken when the container is opened can be realized.

[0015] The weakened portion 6 is continuous with the lower end of the transition portion 5, and the transition portion 5 is made of a solid portion 5b from the lower end of the transition portion 5 to the height of the upper end of the engagement portion 5a. According to the above-mentioned configuration, the rigidity of the transition portion 5 in the portion continuous with the weakened portion 6 can be further improved.

[0016] The mouth 2a has a mouth peripheral wall 2a1 having a mounting portion 4, an annular mouth top wall 2a2 extending radially inward from the upper end of the mouth peripheral wall 2a1, and a discharge tube 2a3 extending upward from the inner peripheral edge of the mouth top wall 2a2. The lid 3 has a sealing tube 3a that contacts the inner peripheral surface of the discharge tube 2a3 when the lid is closed, and a sealing top wall 3b that closes the upper end of the sealing tube 3a. The inner peripheral surface of the sealing tube 3a has a protruding portion 3a1 that protrudes radially inward. The engaging portion 5a protrudes radially outward from the outer circumferential surface of the transition portion 5, and one of the engaging portion 5a and the protruding portion 3a1 has a stopper surface that prevents the sealing tube 3a from rotating in one circumferential direction relative to the transition portion 5 by abutting the other of the engaging portion 5a and the protruding portion 3a1, and an inclined surface that allows the sealing tube 3a to rotate in the other circumferential direction relative to the transition portion 5 by sliding the engaging portion 5a and the protruding portion 3a1 against the other. Therefore, when the lid 3 is rotated in the lid opening direction, the protruding portion 3a1 of the sealing tube 3a engages with the engaging portion 5a, and the weakened portion 6 breaks. Thereafter, the transition portion 5 moves toward the lid 3 side, thereby opening the discharge port. Note that the transition portion 5 that has moved toward the lid 3 side is prevented from falling by the protrusion on the inner circumferential surface of the lower end of the sealing tube 3a engaging with the protrusion on the outer circumferential surface of the transition portion 5. In this embodiment, a ratchet mechanism is formed by providing a plurality of stopper surfaces and inclined surfaces, but this is not limited thereto. For example, a concave portion may be provided on the inner peripheral surface of the sealing tube 3a, and a convex portion may be provided on the outer peripheral surface of the transition portion 5, to provide a convex-concave mechanism that engages with the concave-convex mechanism. The lid 3 may be set on the mouth portion 2a by screwing or by plugging. In the case of a ratchet mechanism, it is preferable to set by screwing, and in the case of a convex-concave mechanism, it is preferable to set by plugging. The mounted portion 4 and the mounting tube 3d are screwed together by a threaded portion, but when setting by plugging, it is easier to set by plugging by using a multiple thread. When the lid is open, the contents in the tube container body 2 can be discharged from the discharge tube 2a3, and when the lid is closed, the discharge tube 2a3 can be sealed by the sealing tube 3a and the sealing top wall 3b.

[0017] The inner peripheral surface of the lower end of the sealing tube 3a fits into the outer peripheral surface of the transition portion 5 below the engaging portion 5a and the protruding portion 3a1. According to the above configuration, it is possible to prevent the transition portion 5 from falling off the lid 3 after opening with a simple structure. Instead of the above configuration, as in a third embodiment described later, the transition portion 5 may have a recess 5c extending downward from the upper end of the transition portion 5, and the lid 3 may have an insert 3c extending downward from the sealing top wall 3b, and the insert 3c may be inserted into and fitted into the recess 5c.

[0018] The lid 3 has an attachment tube 3d that is attached to the attachment part 4 on the radial outside of the sealing tube 3a. In this embodiment, the attachment tube 3d is configured to be attached to the attachment part 4 by screwing, but is not limited to this. The lid 3 has a top wall part 7 and an outer peripheral wall part 8 that is continuous with the top wall part 7, the top wall part 7 has a sealing top wall 3b, and the sealing tube 3a and the attachment tube 3d each extend downward from the top wall part 7 on the radial inside of the outer peripheral wall part 8. In this embodiment, the body part 2b has a body shoulder part 2b1 that widens from the lower end of the mouth part 2a and a body main body part 2b2 that extends downward from the body shoulder part 2b1, but is not limited to this. Although not shown, the bottom part of the tube container main body 2 (body part 2b) is sealed after filling with the contents.

[0019] As in the second embodiment shown in Fig. 3 and Fig. 4, the tube container body 2 has a tube body 9 having a barrier property and an end member 10 integrated with the tube body 9, and the end member 10 is composed of a resin molded layer 10a and an aluminum layer 10b formed of an aluminum sheet located inside the resin molded layer 10a, and may have a mouth portion 2a, a body shoulder portion 2b1, a weakened portion 6, and a transition portion 5. According to the above configuration, the barrier property of the tube container body 2 can be improved by the tube body 9 having a barrier property and the aluminum layer 10b of the end member 10. The tube body 9 may have a single layer structure having a barrier layer, or may have a multi-layer structure having a barrier layer.

[0020] As shown in FIG. 5-FIG. 6, the outer peripheral surface of the lower end of the transition portion 5 has a reduced diameter portion 5d, the weakened portion 6 connects the outer peripheral surface of the lower end of the transition portion 5 to the inner peripheral surface of the upper end of the mouth portion 2a (i.e., the upper end of the discharge tube 2a3), and the transition portion 5 may have a hollow portion 5e extending from the lower end of the transition portion 5 to the above-mentioned predetermined height. According to the above-mentioned configuration, the tube container body 2 can be easily formed by blow molding. In this embodiment, the top wall portion 7 of the lid 3 has a sealing top wall 3b and an upper part of the sealing tube 3a, and the lower part of the sealing tube 3a and the mounting tube 3d each extend downward from the top wall portion 7 on the radial inside of the outer peripheral wall portion 8. The inner peripheral surface of the lower part of the sealing tube 3a contacts the outer peripheral surface of the discharge tube 2a3 when the lid is closed. In this embodiment, the transition portion 5 that has moved to the lid 3 side is prevented from falling by the protrusion on the outer peripheral surface of the insert 3c engaging with the protrusion on the inner peripheral surface of the recess 5c.

[0021] Although the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and the above-described embodiment can be modified in various ways without departing from the gist of the present invention. [Explanation of symbols]

[0022] 1 tube container 2 Tube container body 2a Mouth 2a1 Mouth wall 2a2 Mouth top wall 2a3 Discharge cylinder 2b Torso 2b1 Torso shoulder 2b2 Body part 3 Lid 3a Sealing cylinder 3a1 Protrusion 3b Sealing top wall 3c Insert 3d mounting tube 4 Part to be attached 5 Transition 5a Engagement part 5b Solid part 5c Recess 5d Reduced diameter part 5e Hollow part 6 Weakened part 7 Ceiling wall 8 Outer wall 9 Tube body 10 End member 10a Resin molding layer 10b Aluminum layer O center axis

Claims

1. a tube container body having a mouth portion and a body portion extending downward from the mouth portion; A lid capable of opening and closing the mouth portion, The mouth portion has a fitting portion on an outer circumferential surface, The lid is attached to the attachment portion in a detachable manner by relative rotation in one circumferential direction, a transition portion having an engagement portion that is fitted to the lid so as to be rotatable together with the lid toward one side in the circumferential direction; a weakened portion connecting the transition portion to the mouth portion below the engagement portion, the transition portion is made of a solid portion at least at a predetermined height position, the predetermined height position being any height position between a lower end of the engagement portion and a lower end of the transition portion, The transition portion transitions from the tube container body side to the lid side by breaking the weakened portion when the lid is opened.

2. The weakened portion is continuous with a lower end of the transition portion, The tube container according to claim 1 , wherein the transition portion is made of the solid portion from a lower end of the transition portion to a height of an upper end of the engagement portion.

3. The tube container body includes a tube body having a barrier property and an end member integrated with the tube body, The tube container according to claim 1 , wherein the end member is composed of a molded resin layer and an aluminum layer located inside the molded resin layer, and has the mouth portion, the weakened portion, and the transition portion.

4. The outer peripheral surface of the lower end of the transition portion has a reduced diameter portion, The weakened portion connects a lower end of the transition portion and an upper end of the mouth portion, The tube container according to claim 1 , wherein the transition portion has a hollow portion extending from a lower end of the transition portion to the predetermined height.

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