Closing device having a winding element

A fastener device, comprising:

• a first fastener part and a second fastener part which are mountable on one another along a closing direction, are held against one another in a closed position, and are separable from one another in order to open the fastener device,
• wherein the second fastener part comprises a winding element for receiving a tension element, the winding element being rotatable relative to the first fastener part in order to wind up the tension element on the winding element along a winding direction,
• wherein the first fastener part and the second fastener part each comprise at least one magnet element, the at least one magnet element of the first fastener part and the at least one magnet element of the second fastener part being configured to provide a magnetic attraction force when mounting the first fastener part and the second fastener part on one another,
• wherein the second fastener part has a housing element which, in the closed position, is arranged on the first fastener part and on which the winding element is rotatably mounted, and
• wherein the second fastener part has a locking assembly which, in a locked state, locks the winding element such that the winding element is rotatable relative to the housing element in the winding direction but not counter to the winding direction.

A fastener device, comprising:

• a first fastener part and a second fastener part which are mountable on one another along a closing direction, are held against one another in a closed position, and are separable from one another in order to open the fastener device,
• wherein the second fastener part comprises a winding element for receiving a tension element, the winding element being rotatable relative to the first fastener part in order to wind up the tension element on the winding element along a winding direction,
• wherein the first fastener part and the second fastener part each comprise at least one magnet element, the at least one magnet element of the first fastener part and the at least one magnet element of the second fastener part being configured to provide a magnetic attraction force when mounting the first fastener part and the second fastener part on one another,
• wherein the second fastener part has a housing element which, in the closed position, is arranged on the first fastener part and on which the winding element is rotatably mounted,
• wherein the first fastener part has at least one first undercut element and the housing element of the second fastener part has at least one second undercut element, wherein the at least one first undercut element and the at least one second undercut element engage with one another during the mounting of the fastener parts, such that the fastener parts are, in the closed position, held on one another counter to the closing direction,
• wherein one of the fastener parts has a blocking element for safeguarding an engagement between the at least one first undercut element and the at least one second undercut element in the closed position of the fastener parts,
• wherein the blocking element, in a blocking position in which the engagement between the at least one first undercut element and the at least one second undercut element is safeguarded in the closed position of the fastener parts, faces toward a component of the other fastener part such that the at least one first undercut element and the at least one second undercut element are held in the engagement, and
• wherein at least one of the following:
• the blocking element is spring-preloaded in a direction of the blocking position,
• the blocking element is, for an opening of the fastener device, adjustable out of the blocking position, and
• the component of the other fastener part is adjustable in order to eliminate a blocking action of the blocking element.