Fastening plate for a door closer and door closing device having such a fastening plate

A door closing device (300), comprising a door closer (200) and a fastening plate (100) for this door closer (200),

• the fastening plate (100) having a receptacle side (102) provided for receiving the door closer (200) and having a support side (101) opposite to the receptacle side (102), wherein the receptacle side and the support side are separated by a peripheral edge (103), and
• the door closer (200) having a door closer housing (201), wherein the door closer housing receives the closing mechanism and/or closing electrical system, and has a collar section (203) at least partially overlapping and covering the peripheral edge (103) of the fastening plate (100) in the fastened state,
• wherein at least one projection (105a-105d) protruding outward on the edge is implemented on the peripheral edge (103) of the fastening plate (100), and at least one recess (205a-205d) corresponding to the projection (105a-105d) on the fastening plate (100) is arranged in the collar section (203) of the door closer (200), and wherein the at least one recess is provided for the formfitting interlocking engagement of the projection (105a-105d) on the fastening plate (100) upon the fastening of the door closer (200) on the fastening plate (100), in order to cause both alignment and also locking of the door closer (200) to be fastened relative to the fastening plate (100) through this engagement.