Closure device for attaching to a robot

Closure device for a cavity of a robot, the closure device comprising:

• a removable covering element covering the cavity of the robot;
• and
• a fastening apparatus fastening the covering element to the robot, the fastening apparatus having a rotatable closure element with a rotational closing movement between 45° and 215° into a closure position;
• wherein the closure element has a first bearing ring and a second bearing ring between which the covering element is arranged, wherein at least one of the first and second bearing rings includes a radial slot intersecting a circumferential slot;
• the fastening apparatus and the removable covering element close the cavity of the robot at least to a pressure of 175 mbar;
• the fastening apparatus has a cylindrical closure bushing for receiving and fastening of the closure element in sections;
• the closure bushing has at least one slope construction, contained within the cylindrical closure bushing, for at least one nose of the closure element in order to generate a closing stroke of the closure element;
• the at least one slope construction has a slope towards a high or turning point, wherein the at least one slope construction has a sub-section with a reduced or negative pitch in the closing rotational direction of the closure element behind the high or turning point;
• and
• the at least one slope construction has at least one abrupt discontinuity which is haptically noticeable by an operator during passing of the at least one nose so that the operator is communicated in a haptically noticeable manner of a reaching of the closure position or the progression of a closing process during a rotation of the closure element.