US Patent 11937631 Aerosol generation device having concealed fastening portion

An aerosol generation device includes a first housing including an inner accommodating space and an opening exposing the inner accommodating space to an outside of the first housing; a second housing including an inner space and coupled to the first housing with a fastening portion; a battery inserted into the inner space of the second housing and having a part exposed to an outside of the second housing; a case into which the second housing is inserted, the case covering at least one of the first housing or the second housing; and a cap coupled to the first housing and covering the first housing, wherein the case covers the part of the battery exposed to the outside of the second housing.