초록 ▼

The invention relates to a closeable opening device (1) made of a spout fitting (2), a cutting element (3), and a screw cap (4), optimized for assembly and use. To this end, the spout fitting (2) and cutting element (3) are produced as semi-finished goods (5). The cutting element (3) comprises an up

The invention relates to a closeable opening device (1) made of a spout fitting (2), a cutting element (3), and a screw cap (4), optimized for assembly and use. To this end, the spout fitting (2) and cutting element (3) are produced as semi-finished goods (5). The cutting element (3) comprises an upper edge (33) at the cylindrical part (30), having recesses (36) distributed uniformly around the circumference. The screw cap (4) comprises ring wall segments (46) on the inner underside of the cover surface thereof, designed diametrically opposite the recesses (36). The upper edge (33) and the ring wall segments (46) slide against each other during assembly, until the ring wall segments (46) engage in the recesses (36) in a form-fit manner. A stable form-fit connection thus exists between the two said parts, allowing greater torque to be transmitted without the problems known from the state of the art occurring.

대표청구항 ▼

1. A closeable opening device (1) for a sealed packaging, which contains a flowable medium, wherein the device comprises a spout fitting (2) having a cylindrical pipe section (20) and flange (21), said pipe section being furnished with an internal thread (23) and an external thread (22), as well as

1. A closeable opening device (1) for a sealed packaging, which contains a flowable medium, wherein the device comprises a spout fitting (2) having a cylindrical pipe section (20) and flange (21), said pipe section being furnished with an internal thread (23) and an external thread (22), as well as a cylindrical cutting element (3), a lower edge of which being equipped with one or a plurality of teeth (35) and an internal jacket surface of which being furnished with driving dogs (37) that protrude in a radial direction and interact with driving dogs (45) in a screw cap (4) comprising a jacket wall (41) and cover surface (40), wherein the spout fitting (2) and the cylindrical cutting element (3) are produced as a one-piece semi-finished good (5) connected to one another via predetermined breaking point bridges (34), characterized in that the cylindrical cutting element (3) has at an upper edge thereof (32) a plurality of recesses (36) uniformly distributed around a circumference and in that ring wall segments (46) diametrically opposite the recesses (36) are integrally formed on the cover surface (40) in the screw cap (4), wherein said ring wall segments, when rotated, are able to slide onto the upper edge (33) of the cutting element (3) until said segments engage in the recesses (36) in the upper edge (33). 2. The opening device (1) according to claim 1, characterized in that the upper edge (33) of the cutting element (3) comprises two recesses (36) diametrically opposed to one another. 3. The opening device (1) according to claim 2, characterized in that the two recesses (36) in the upper edge (33) of the cutting element (3) and the two ring wall segments (46) in the screw cap (4) each span an angle of 90°. 4. The opening device (1) according to claim 1, characterized in that a height of the ring wall segments (46) is at least equal to a depth of the recesses (36). 5. The opening device (1) according to claim 1, characterized in that a height of the ring wall sections (46) plus a height of the cutting element (3) from a upper edge of the recess (36) to a deepest point of at least one tooth (35) is less than a distance between the cover surface (40) of the screw cap (4), in a region in which the ring wall segments (46) are integrally formed on the cover surface (40), and an underside of the flange (21) of the spout fitting (2).