| 摘要 |
A lock member projects perpendicularly from the inner surface of the top of a toilet tank cover into the tank and has a bore formed therethrough. A lock rod passes through the bore through the lock member and bores formed through the front walls of the toilet tank in alignment with the bore of the lock member. The lock rod has a threaded part coupled in the bore through the front wall of the tank and a head having keyholes formed therein for accommodating a special key whereby the lock rod is rotatable by the key to insert it through the bores of the tank and lock member and to remove the lock rod from the bores.
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