Receptacle unit and extension cord
    1.
    发明授权
    Receptacle unit and extension cord 失效
    插座单元和延长线

    公开(公告)号:US5600306A

    公开(公告)日:1997-02-04

    申请号:US542319

    申请日:1995-10-12

    CPC分类号: H01R13/6683 H01R13/7137

    摘要: An electrical receptacle unit includes at least one receptacle body (3) internally provided with a pair of slotted terminals (4) for insertion of a pair of blades (L) of a load-side electrical plug (P), a thermistor (7) encased in a protective tube (9) outwardly projectable from between the slotted terminals (4) of the receptacle body (3), a coil spring (13) for projecting the thermistor (7) out from the receptacle body (3), a relay (14) for enabling and disabling supply of electric power to the slotted terminals (4), a control circuit (19) which operates the relay (14) to cut off supply of electric power to the slotted terminals (4) when the temperature of the thermistor (7) reaches or exceeds a preset temperature, and a buzzer (23) operated by an output signal produced by the control circuit (19) when the temperature of the thermistor (7) reaches or exceeds the preset temperature. When the thermistor rises to or above the preset temperature owing to tracking or the like, supply of power to the load-side plug is cut off and the alarm is activated to produce a warning that the load-side plug has overheated.

    摘要翻译: 电插座单元包括至少一个插座本体(3),内部设有一对用于插入负载侧电插头(P)的一对叶片(L)的开槽端子(4),热敏电阻器(7) 封装在可从插座本体(3)的开槽端子(4)之间向外突出的保护管(9)中,用于将热敏电阻(7)从插座本体(3)突出的螺旋弹簧(13),继电器 (14),用于启用和禁用对所述开槽端子(4)的电力供应;控制电路(19),其操作所述继电器(14)以在所述开槽端子(4)的温度 当所述热敏电阻(7)的温度达到或超过所述预设温度时,所述热敏电阻(7)达到或超过预设温度,以及由所述控制电路(19)产生的输出信号操作的蜂鸣器(23)。 当由于跟踪等而使热敏电阻上升到或高于预设温度时,向负载侧插​​头供电被切断并且报警被激活以产生负载侧插头过热的警告。