| 摘要 |
PROBLEM TO BE SOLVED: To easily make a user recognize incomplete attachment of a fixing housing to a main body housing.SOLUTION: A lock lever 550 can be changed in an attitude between a fixing attitude of fixing a position of a fixing housing and a releasing attitude of releasing fixation. A cover 520 can be rotated between a covering position of covering an operation part 554 of the lock lever 550 and an opening position of exposing the operation part 554 so as to be visible. A rib 521 extending in a horizontal direction is arranged on a back surface of the cover 520. When the cover 520 moves from the opening position to the covering position, the rib does not interfere with the operation part 554 of the lock lever 550 being in the fixing attitude, and interferes with the operation part 554 being in the releasing attitude. |
