| 摘要 |
A cam groove is formed in a battery cover of a camera, while a slider is provided on a camera body side. A cam follower is formed on the slider. An entrance of the cam groove is smaller in width than the cam follower. As the slider is slid, the battery cover is pressed to be gradually displaced in the opening direction. When the cam follower passes the entrance, the battery cover is instantaneously forced out in the opening direction in a pop-up manner. Thus, the cover can be opened by one sliding operation. A rib is provided in the battery accommodation chamber in correspondence with the plus terminal of a battery. The rib is provided only in the optical axis direction to prevent the battery from falling out of the battery accommodation chamber when an impact is made on the camera in a direction parallel to the optical axis. The rib does not interfere with insertion or taking-out of the battery. The battery is thus prevented from falling out of the camera.
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