摘要 |
A back cover includes an opening configured to penetrate the back cover throughout between an exterior surface and an interior surface of the back cover, lock receivers capable of engaging respectively with hook-shaped lock portions of a switch unit, and fastening portions capable of fastening the switch unit to the back cover. The lock receivers and the fastening portions are arranged near a peripheral edge of the opening at positions with the opening interposed between the lock receivers and the fastening portions. |