A housing includes: a housing body on which a portion for abutment is formed; an assembly that is detachably assembled to the housing body; and a hinge with which the assembly is mounted on the housing body. The hinge includes (i) a connection that is arranged between the housing body and the assembly, and on which an abutment is formed, (ii) a first joint that is disposed between the housing body and the connection, and has flexibility, and (iii) a second joint that is disposed between the assembly and the connection, and has flexibility. The abutment formed on the connection is allowed to abut on the portion for abutment of the housing body by bending the first joint, and the assembly is assembled to the housing body by bending the second joint in a state in which the first joint is bent.