Patent ID: 8611073

Claim:
A lid member comprising: a first lid member having a pair of first engaging sections; a second lid member that has a pair of second engaging sections engaging with the first engaging sections; and a projection disposed at an end of a sliding direction of the second lid member, wherein an elastic member is mounted to a first side of the first lid member; the second lid member slides on a second side of the first lid member which is opposite to the first side; the elastic member is compressible in a direction towards the second lid member; a first projecting section extends toward the second lid member from a surface of the first lid member on which the second lid member slides; and a second projecting section is disposed on the second lid member, the second projecting section positioned to abut and slide on the first projecting section when the second lid member slides on the first lid member, wherein the pair of first engaging sections are disposed at both-side ends of the first lid member; the pair of second engaging sections are disposed at both-side ends of the second lid member; and the second lid member slides on a main surface of the first lid member and covers the main surface of the first lid member.