Folding portable wireless apparatus capable of automatically opening upper and lower cases

Claim 1

A folding portable wireless apparatus in which an upper case and a lower case are connected by a hinge to enable opening and/or closing said both cases, comprising: opening impetus giving means for giving an impetus to said upper case and said lower case in an opening direction; and locking means provided to the both side faces of said upper case and said lower case, said locking means including open levers which are provided on the both side faces of either said upper case or said lower case and can be manually operated; engaging portions which are provided on the both side faces of the other case and interlock with said open levers to lock said both cases; and locking impetus giving means for giving an impetus to said open levers in such a direction that the locked state established between said open levers and said engaging portions is maintained, wherein said open levers are so provided to the both side faces of one case as to be capable of oscillation about a shaft; a hook or a locking groove is formed to one end of each of said open levers; and said engaging portions are provided on the both side faces of the other case and constituted by locking grooves or hooks with which said hooks or said locking grooves engage; and wherein said open levers can oscillate in a direction of the thickness of one case; one end of each of said open levers protrudes from the front face of the case; a hook or a locking groove is formed on the inner face of said one end; and said locking impetus giving means inwardly gives an impetus to said one end.