Smoke alarm

The utility model relates to the technical field of smoke alarms, in particular to a smoke alarm, which comprises a smoke alarm body, a battery jar for placing a battery is arranged on the smoke alarmbody, and a battery cover matched with the battery jar is hinged on the smoke alarm body. A limiting device used for limiting the position of the battery is arranged on the smoke alarm body, a mounting device is arranged on the limiting device in an attached mode, and the mounting device is matched with the smoke alarm body in a clamped mode and abuts against the battery cover. The device has theeffects of stabilizing the battery placement position and improving the power supply stability of the battery. 本实用新型涉及烟雾报警器的技术领域，尤其涉及一种烟雾报警器，其包括烟雾报警器本体，所述烟雾报警器本体上开设有供电池放置的电池槽，所述烟雾报警器本体上铰接有与电池槽相配合的电池盖，所述烟雾报警器本体上设有用于限制电池位置的限位装置，所述限位装置上贴合设置有安装装置，所述安装装置与烟雾报警器本体卡接配合并与电池盖相抵接。本实用新型具有稳定电池放置位置、提高电池供电稳定性的效果。