Patent attributes
An air cleaner includes a housing having an opening and a filter assembly. The filter assembly is installed in and removed from the housing through the opening. When the filter assembly is at an installation position, a sealing portion of a filter element is pressed against a sealing surface of the housing. The frame includes a frame body, which supports the filter element, and a front engaging portion, which projects further forward in the insertion direction than the frame body. The housing includes a projection, which is engaged with the front engaging portion during insertion of the filter assembly. The front engaging portion and the projection are engaged with each other to constitute a guiding structure that guides the filter assembly toward the installation position.
