A cleaning unit for a suction head, comprising: - a rotating brush which is rotatably movable about an axis of rotation and which is configured to be removably mounted in a receiving housing delimited by a main body of the suction head, and - a closure cap which is configured to at least partially close a passage opening provided on the main body and through which the rotating brush is able to be introduced into the receiving housing and removed from the receiving housing, the rotating brush being rotatable relative to the closure cap, the closure cap including: • a cap body, • locking means configured to lock the cap body onto the main body, the locking means including at least one locking member which is movable relative to the cap body between a locking position in which the at least one locking member is configured to cooperate with at least one locking element provided on the main body so as to prevent a removal of the rotating brush from the receiving housing and a release position in which the at least one locking member is configured to release the at least one locking element so as to allow a removal of the rotating brush from the receiving housing, and • an actuating member movably mounted relative to the cap body between a first actuating position and a second actuating position, the actuating member and the at least one locking member being configured such that a displacement of the actuating member from the first actuating position to the second actuating position causes a displacement of the at least one locking member from the locking position to the release position, characterized in that the at least one locking member is elastically deformable, and in that the closure cap is configured such that the at least one locking member is elastically compressed when the at least one locking member is displaced towards the release position and such that the at least one locking member elastically relaxes towards the locking position when the at least one locking member occupies the release position. - a rotating brush which is rotatably movable about an axis of rotation and which is configured to be removably mounted in a receiving housing delimited by a main body of the suction head, and - a closure cap which is configured to at least partially close a passage opening provided on the main body and through which the rotating brush is able to be introduced into the receiving housing and removed from the receiving housing, the rotating brush being rotatable relative to the closure cap, the closure cap including: • a cap body, • locking means configured to lock the cap body onto the main body, the locking means including at least one locking member which is movable relative to the cap body between a locking position in which the at least one locking member is configured to cooperate with at least one locking element provided on the main body so as to prevent a removal of the rotating brush from the receiving housing and a release position in which the at least one locking member is configured to release the at least one locking element so as to allow a removal of the rotating brush from the receiving housing, and • an actuating member movably mounted relative to the cap body between a first actuating position and a second actuating position, the actuating member and the at least one locking member being configured such that a displacement of the actuating member from the first actuating position to the second actuating position causes a displacement of the at least one locking member from the locking position to the release position, • a cap body, • locking means configured to lock the cap body onto the main body, the locking means including at least one locking member which is movable relative to the cap body between a locking position in which the at least one locking member is configured to cooperate with at least one locking element provided on the main body so as to prevent a removal of the rotating brush from the receiving housing and a release position in which the at least one locking member is configured to release the at least one locking element so as to allow a removal of the rotating brush from the receiving housing, and • an actuating member movably mounted relative to the cap body between a first actuating position and a second actuating position, the actuating member and the at least one locking member being configured such that a displacement of the actuating member from the first actuating position to the second actuating position causes a displacement of the at least one locking member from the locking position to the release position,