An electronic device (1, 101, 201), having a fixed conductive plate and an elastic conductive plate, in which the fixed conductive plate, part of which becomes an external terminal portion, the elastic conductive plate connected to the fixed conductive plate, and a fixed electrode portion that is electrically continuous to the elastic conductive plate are provided in a case; a first contact surface and a second contact surface, which are opposite to each other, are provided in the case, at least one of the first contact surface and the second contact surface being a front plate surface of the fixed conductive plate; wherein the elastic conductive plate comprises: a first pressure contact portion, which is elastically pressed against the first contact surface, a second pressure contact portion, which is turned-backed from the first pressure contact portion and is elastically pressed against the second contact surface, an elastic arm portion, which extends toward the fixed electrode portion, and an elastically-pressed contact point, which is provided at a top of the elastic arm portion and is elastically pressed against the fixed electrode portion; at least one of the first pressure contact portion and the second pressure contact portion is in contact with the front plate surface of the fixed conductive plate; the electronic device (1, 101, 201) being characterized in that the elastic conductive plate further comprises a support piece portion, which is bent from the second pressure contact portion and extends beyond the first contact surface, the elastic arm portion is bent from the support piece portion; the elastic conductive plate is integrally formed from a leaf spring metal material; a linkage end is formed at part of the fixed conductive plate, and the linkage end and the support piece portion of the elastic conductive plate are fitted to each other to form a restricting portion (41, 42, 43) that restricts the support piece from separating from the fixed electrode portion. a first contact surface and a second contact surface, which are opposite to each other, are provided in the case, at least one of the first contact surface and the second contact surface being a front plate surface of the fixed conductive plate; wherein the elastic conductive plate comprises: a first pressure contact portion, which is elastically pressed against the first contact surface, a second pressure contact portion, which is turned-backed from the first pressure contact portion and is elastically pressed against the second contact surface, an elastic arm portion, which extends toward the fixed electrode portion, and an elastically-pressed contact point, which is provided at a top of the elastic arm portion and is elastically pressed against the fixed electrode portion; at least one of the first pressure contact portion and the second pressure contact portion is in contact with the front plate surface of the fixed conductive plate; a first pressure contact portion, which is elastically pressed against the first contact surface, a second pressure contact portion, which is turned-backed from the first pressure contact portion and is elastically pressed against the second contact surface, an elastic arm portion, which extends toward the fixed electrode portion, and an elastically-pressed contact point, which is provided at a top of the elastic arm portion and is elastically pressed against the fixed electrode portion; at least one of the first pressure contact portion and the second pressure contact portion is in contact with the front plate surface of the fixed conductive plate; the electronic device (1, 101, 201) being characterized in that the elastic conductive plate further comprises a support piece portion, which is bent from the second pressure contact portion and extends beyond the first contact surface, the elastic arm portion is bent from the support piece portion; the elastic conductive plate is integrally formed from a leaf spring metal material; a linkage end is formed at part of the fixed conductive plate, and the linkage end and the support piece portion of the elastic conductive plate are fitted to each other to form a restricting portion (41, 42, 43) that restricts the support piece from separating from the fixed electrode portion.