| 摘要 |
A cap 1 attached to housings 2 and 3 can be opened and closed. The cap 1 includes a tongue portion 1a protruding from a cap body 1d; and claw portions engaging with the housing (second outer housing) 3. An elongated hole 1b is formed on the tongue portion 1a. The housing 3 includes: a notched hole 3b for accepting the tongue portion 1a; a stopper 3c that is unremovably inserted into the elongated hole 1b so as to permit relative movement; and engaged portions engaged with the claw portions of the cap 1 to fix the cap 1. When the cap 1 is closed, the stopper 3c is fixed on the elongated hole 1b on the side of the cap body 1d by protrusions 1c provided in the elongated hole 1b.
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