Retention mechanism in a dispenser for retaining an exchangeable roll of material, retention system, dispenser, and method for inserting a roll of material into such a retention mechanism

A retention mechanism in a dispenser for retaining an exchangeable roll of material, the retention mechanism comprising:

• a housing including a front wall, wherein an insertion slot for a bearing pin of an end plug of the exchangeable roll extends along the front wall, and
• a cam lock, which is arranged in the housing so as to be rotatable in a plane which is parallel to the front wall and to the direction of extension of the insertion slot,
• wherein the cam lock includes a retaining member which is movable between an open position and a locked position by rotating the cam lock, the cam lock being pre-tensioned into the open position,
• wherein, when the retaining member is in the open position, the bearing pin can be inserted into the insertion slot, and
• wherein, when the retaining member is in the closed position, the bearing pin is retained in a locking section of the insertion slot.