Adjustable mount for a backpack or schoolbag

An adjustable mount for a backpack having a rear wall attached to shoulder straps, the mount comprising:

• a housing secured to the rear wall and of substantially rectangular basic shape and formed by a first part and a second part;
• longitudinally extending guide rails on the first part and projecting into the housing, the second part being formed with longitudinally extending slots;
• a slide movable along the rails inside the housing and formed with at least one transversely open recess;
• a support plate secured to the straps and axially fixed through the slots to the slide for joint axial movement therewith;
• a rack rod extending along a longitudinal axis between the rails, rotatable about the axis on the housing but axially fixed thereto, and having a plurality of axially spaced and radially projecting teeth, the rack rod being rotatable between a locking position with at least one of the teeth engaged in the recess and thereby preventing movement of the slide and support plate relative to the housing and a freeing position with the teeth disengaged from the slide and the slide and support plate movable relative to the housing, whereby the backpack can be vertically adjusted on a wearer of the backpack in the freeing position;
• and
• an actuating element projecting radially from and fixed to an end of the rod outside the housing and actuatable by the wearer of the backpack to rotate the rod between the locking position and the freeing position.