A pouring member includes an unsealing cap and at least two rotation prevention sections extending vertically and downwardly from an end surface of an open end side of the unsealing cap and is arranged such that the at least two rotation prevention sections are apart from one another by an angle whi
A pouring member includes an unsealing cap and at least two rotation prevention sections extending vertically and downwardly from an end surface of an open end side of the unsealing cap and is arranged such that the at least two rotation prevention sections are apart from one another by an angle which is larger than a rotation angle required for twisting off the sealing part, and symmetrically with respect to the central axis of the unsealing cap. A recess is formed such that the recess opens to a front end side of the rotation prevention section, and an engagement projection engages the recess in a direction substantially parallel with a direction in which the rotation prevention sections are extended vertically and downwardly, and is formed at a specific position of the flange part of the pouring member.
대표청구항▼
1. A pouring member, comprising: a pouring member main body; anda cylindrical unsealing cap having a closed end at an end thereof and coaxially attached to said pouring member main body, whereinsaid pouring member main body has a base part, a pouring cylindrical part extending cylindrically from the
1. A pouring member, comprising: a pouring member main body; anda cylindrical unsealing cap having a closed end at an end thereof and coaxially attached to said pouring member main body, whereinsaid pouring member main body has a base part, a pouring cylindrical part extending cylindrically from the base part, a sealing part formed at a tip of said pouring cylindrical part, and a thin wall part formed between the sealing part and the pouring cylindrical part, and said sealing part is twisted off with said thin wall part by rotating said unsealing cap which is engaged with said sealing part around a central axis of said unsealing cap,said unsealing cap includes at least two rotation prevention sections extending vertically and downwardly from an end surface of an open end side of said unsealing on and being arranged such that the at least two rotation prevention sections are apart from one another by an angle which is larger than a rotation angle required for twisting off said sealing part and symmetrically with respect to the central axis, and, at substantially a center of a width direction of each rotation prevention section, a recess is formed such that the recess opens to a front end side of the rotation prevention section, andsaid pouring member main body further includes an engagement projection engaging with said recess in a direction substantially parallel with a direction in which said rotation prevention sections extend vertically and downwardly, said engagement projection being formed at a specific position of a flange part at a boundary between said base part and said pouring cylindrical part of said pouring member main body. 2. The pouring member according to claim 1, further comprising a cylindrical adapter which is coaxially screwed to said pouring member main body after said pouring cylindrical part is unsealed and said unsealing cap is removed, wherein said adapter has a pair of wing parts extending symmetrically in a radial direction of said adapter, and, has, on a side surface along an end edge on a side opposite to said flange part,an abutment part which abuts against said engagement projection when said engagement projection formed on said pouring member main body and said wing parts are aligned on a same plane over the central axis after said pouring member main body is screwed to said adapter, anda loosening prevention rib which has an inclined surface having a height from a side surface of said adapter increasing in a direction opposite to a screwing direction and allows said engagement projection to move over said inclined surface so that the engagement projection enters between said abutment part and said loosening prevention rib when the pouring member main body is screwed to said adapter. 3. The pouring member according to claim 2, wherein threads for screwing said adapter are formed on a side surface of said pouring cylindrical part in a vicinity of said base part of said pouring cylinder cylindrical part, and a ring-like rib which protrudes in a ring-like form is formed on the side surface of said pouring cylindrical part at a position closer to the tip, which is an opposite side to where said threads are formed, with respect to a longitudinal direction of said pouring cylindrical part. 4. The pouring member according to claim 3, wherein, when said pouring member main body is screwed to said adapter, said ring-like rib is in close contact with an inner surface of said adapter. 5. The pouring member according to claim 1, wherein the at least two rotation prevention sections are arranged 180° apart from each other. 6. The pouring member according to claim 5, wherein the at least two rotation prevention sections elastically deform when the at least two rotation prevention sections are released from engagement with the engagement projection. 7. The pouring member according to claim 1, wherein the recess has a first cut-out part or a first curved surface at an outer side surface of the recess so that the engagement projection engages with the recess easily. 8. The pouring member according to claim 7, wherein the engagement projection has a second cut-out part or a second curved surface at a side surface of the engagement projection so that the engagement projection engages with the recess easily. 9. The pouring member according to claim 1, further comprising a support projection extending vertically and downwardly from the end surface of the open end side of said unsealing cap together with the at least two rotation prevention sections to prevent the unsealing cap from inclining or to prevent the at least two rotation prevention sections from breaking when the unsealing cap is capped on the pouring member main body.
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이 특허에 인용된 특허 (21)
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