Patent ID: 7832565

Claim:
A structure of housing a battery, comprising: a casing; a sealing rubber which covers an inner surface of the casing; an electronic substrate fitted inside the sealing rubber; and an inner plate comprising: a first plate and a second plate connected by a thin-walled parting line portion, wherein the inner plate is bendable between a bent condition, in which the second plate is bent at the thin-walled parting line portion with respect to the first plate, and a straightened condition, in which the second plate is approximately flush with the first plate; one or more long holes straddling the thin-walled parting line portion; an arm swingably attached, at a proximal end, to one longitudinal edge of each of the long holes; and an engagement portion provided on the other longitudinal edge of each of the long holes that engage with a leading end of the one or more arms, wherein the engagement portion engages with the leading end in a gap formed between an edge of the electronic substrate and the sealing rubber such that the inner plate, in the straightened condition, provides contact pressure at both ends to the sealing rubber.