Intrinsically safe type water proof telephone for selecting mine. The utility model mainly solves the problems that the existing mine telephone is easy to be invaded by water vapor and water flow, and the circuit board is short circuited and the telephone is out of order. It is characterized in that: the waterproof membrane is arranged between the buzzer buzzer and voice ring slot, a sealing ring is arranged between the waterproof membrane and the buzzer sound and groove, the annular sealing ring groove and voice contact, the shell is also provided with a waterproof keyboard, pick the top pressing block, top column the top column, which is fixed on a wiring board, the top of the column and the top pressing block contact, the waterproof keyboard selection side and top pressure part joint, the other side and the inner surface of the shell. The utility model has the advantages that a plurality of sealing rings and a pressing device are added, the sealing mechanism of the mechanism is improved, and the water vapor and the water flow are effectively prevented.
【技术实现步骤摘要】
【技术保护点】
一种矿用本质安全型防水选号电话机，包括外壳（1）、电路板（2）、蜂鸣器（3）、接线板（4），所述的外壳（1）上设有发声通槽（11），其特征在于：所述的蜂鸣器（3）与发声通槽（11）之间设有蜂鸣器防水膜（5），所述的蜂鸣器防水膜（5）与发声通槽（11）之间设有环形密封圈（6），所述的环形密封圈（6）与发声通槽（11）接触，所述的外壳（1）内还设有防水选号键盘（7）、顶压块（8）、顶柱（9），所述的顶柱（9）固定在接线板（4）上，所述的顶柱（9）与顶压块（8）接触，所述的防水选号键盘（7）一面与顶压件（8）贴合，另一面与外壳（1）内表面贴合。
【技术特征摘要】
【专利技术属性】
技术研发人员：陈献杨，郑虎，熊淼光，
申请(专利权)人：浙江正安防爆电气有限公司，
类型：实用新型
国别省市：
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