| 摘要 |
An end plug for a roll of material to be inserted into a retention mechanism, includes: a receiving portion for insertion in the roll, an end face for contacting the mechanism and a bearing member for insertion into the mechanism. The bearing member includes a bearing pin having a counter surface facing the end face and at least one portion for locking the end plug in an end position in the mechanism, the locking portion being positioned within a zone defined by a first surface extending towards the end face from an intersection position with the bearing pin, the first surface being inclined with respect to the longitudinal axis of the bearing pin by an angle of 117 and a second surface extending towards the end face from the intersection position, the second surface being inclined with respect to the axis of the bearing pin by an angle of 141.
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