Childproof and tamper-proof container closure for containers

摘要

A childproof and tamper-proof closure for a container has an outer cap which can be twisted relative to the inner cap and can be shifted axially. Coupling projections on each of the caps can be brought into and out of engagement by the axial displacement of the outer cap with respect to the inner cap. Break-off elements include a breakout projection protruding from the inner cap in a direction away from the container and towards the outer cap; a break-off region attached to the outer cap so that the break-off region is forcibly detached from the outer cap by the breakout projection when the coupling projections are brought into engagement for the first time; a second break-off region attached to the inner cap, a free end of the break-off region extending below an annular protrusion integrally molded around the neck of the container when the cap is fastened on the mouth of the container; and at least one gripping projection on the second break-off region extending inwardly below the annular protrusion when the cap is fastened on the mouth of the container. The second break-off region detaches from the inner cap as the inner cap is rotatably unfastened from the mouth of the container for the first time by rotating the outer cap when the coupling projections are in engagement, so as to rotate the inner cap.