Connection Device for a Drive Train

A connection device for a shaft in a motor vehicle, comprising:

• an axis of rotation;
• a first connection region for connecting the connection device to a drive train element;
• a predetermined breaking region;
• and
• a tube region which directly adjoins the predetermined breaking region, wherein
• the connection device has an axial extent in an axial direction of the axis of rotation and a radial extent orthogonal thereto and is formed at least in part as a tubular hollow body,
• the predetermined breaking region is arranged between the first connection region and the tube region in the axial direction,
• a connecting region is arranged in the axial direction between the first connection region and the predetermined breaking region,
• the greatest outer radial extent of the first connection region is smaller than the greatest outer radial extent of the connecting region, and
• the greatest outer radial extent of the connecting region is smaller than the smallest inner radial extent of the tube region.