A closure device for securing an electronic device on a holding device is provide. The closure device includes a first closure part having a first attaching part, a second closure part having a second attaching part and which can be attached to the first closure part in a closing direction, wherein at least one thread is arranged on one of the attaching parts and at least one engaging element is arranged on the other of the attaching parts for running onto the at least one thread when attaching the closure parts to one another, and a magnetic device that acts in a magnetically attracting manner between the first closure part and the second closure part during the attaching process.

a coupling assembly includes a first portion and a second portion which are configured to couple to one another such that the second portion is capable of rotationally driving the first portion about an axis of rotation. The first portion is provided with a first magnet and the second portion is provided with a second magnet. The first and second magnets are arranged to repel each other such that the first and second portions are biased away from each other in an axial direction that is parallel to the axis of rotation.

A closure device for securing an electronic device on a holding device is provide. The closure device includes a first closure part having a first attaching part, a second closure part having a second attaching part and which can be attached to the first closure part in a closing direction, wherein at least one thread is arranged on one of the attaching parts and at least one engaging element is arranged on the other of the attaching parts for running onto the at least one thread when attaching the closure parts to one another, and a magnetic device that acts in a magnetically attracting manner between the first closure part and the second closure part during the attaching process.

The present disclosure relates to coupling assemblies for drive shaft assemblies. The coupling assembly comprises a first portion and a second portion which are configured to couple to one another such that the second portion is capable of rotationally driving the first portion about an axis of rotation. The first portion is provided with a first magnet and the second portion is provided with a second magnet. The first and second magnets are arranged to repel each other such that the first and second portions are biased away from each other in an axial direction that is parallel to the axis of rotation.