CN214754507U - 一种带有定时功能的电路和漏电保护插头 - Google Patents

一种带有定时功能的电路和漏电保护插头 Download PDF

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CN214754507U
CN214754507U CN202120159263.2U CN202120159263U CN214754507U CN 214754507 U CN214754507 U CN 214754507U CN 202120159263 U CN202120159263 U CN 202120159263U CN 214754507 U CN214754507 U CN 214754507U
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switch
circuit
switch tube
timing function
resistor
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杨俊托
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Dongguan City Tuocheng Industries Co Ltd
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/14Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to occurrence of voltage on parts normally at earth potential
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/14Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection
    • H01H83/144Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by imbalance of two or more currents or voltages, e.g. for differential protection with differential transformer
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/001Functional circuits, e.g. logic, sequencing, interlocking circuits
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/652Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding   with earth pin, blade or socket
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66Structural association with built-in electrical component
    • H01R13/70Structural association with built-in electrical component with built-in switch
    • H01R13/713Structural association with built-in electrical component with built-in switch the switch being a safety switch
    • H01R13/7135Structural association with built-in electrical component with built-in switch the switch being a safety switch with ground fault protector
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/16Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
    • H02H3/162Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass for ac systems
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/33Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors using summation current transformers

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

本实用新型涉及漏电保护技术领域,尤其是指一种带有定时功能的电路和漏电保护插头,定时芯片U2的输出端与隔离开关U3连接,隔离开关U3通过电阻R26与整流模块D3连接,开关管Q3通过电阻R16与整流模块D3连接,隔离开关U3和开关管Q3接地,整流模块D3与断路件X1连接,电阻R21的一端与外部电源连接,开关管Q4和开关管Q3与电阻R21连接,开关管Q4的第二开关端接地,电容C11并联在开关管Q4的第一开关端和第二开关端之间,零序互感器的输出端与微处理器U1的第一输入端连接,微处理U1的输出端与开关管Q4的控制端连接。本实用新型令漏电保护插头既有漏电保护功能又有定时功能。

Description

一种带有定时功能的电路和漏电保护插头
技术领域
本实用新型涉及漏电保护技术领域,尤其是指一种带有定时功能的电路和漏电保护插头。
背景技术
为了保护使用者的安全,许多插头中加入了漏电保护功能,但这些插头还未能很好地满足使用者的需求,原因在于实际使用环境中,使用者时常需要插头带有定时功能(如在睡眠时令空调或风扇定时关闭),如何令插头既有漏电保护功能,又有定时功能,成为行业亟待解决的问题。
发明内容
本实用新型针对现有技术的问题提供一种既能够实现漏电保护,又带有定时功能的电路。
本实用新型采用如下技术方案:一种带有定时功能的电路,包括定时芯片U2、隔离开关U3、整流模块D3、开关管Q4、开关管Q3、电阻R21、电阻R26、电阻R16、电容C11、零序互感器、微处理器U1以及断路件X1,所述定时芯片U2的输出端与所述隔离开关U3的控制端连接,整流模块D3的输入端与外部交流电源连接,隔离开关U3的第一开关端通过电阻R26与整流模块D3的输出端连接,开关管Q3的第一开关端通过电阻R16与整流模块D3的输出端连接,隔离开关U3的第二开关端和开关管Q3的第二开关端分别接地,整流模块D3的输出端与断路件X1的控制端连接,电阻R21的一端与外部交流电源连接,开关管Q4的第一开关端和开关管Q3的控制端分别与电阻R21的另一端连接,开关管Q4的第二开关端接地,电容C11并联在开关管Q4的第一开关端和第二开关端之间,零序互感器的输出端与微处理器U1的第一输入端连接,微处理U1的输出端与开关管Q4的控制端连接。
作为优选,所述带有定时功能的电路还包括手动开关S3,所述手动开关S3的第一开关端与整流模块D3的输出端连接,所述手动开关S3的第二开关端接地。
作为优选,所述带有定时功能的电路还包括二极管D4和电阻R22,二极管D4的阴极与开关管Q3的第二开关端连接,二极管D4的阳极通过电阻R22与外部交流电源连接,微处理器U1的第二输入端与二极管D4的阳极连接。
作为优选,所述带有定时功能的电路还包括晶闸管SCR,开关管Q3的第二开关端通过晶闸管SCR接地,晶闸管SCR的控制端与微处理器的输出端连接。
本实用新型还提供一种带有定时功能的漏电保护插头包括零线输入端、火线输入端、与零线输入端电连接的零线输出端、与火线输入端电连接的火线输出端以及上述电路,所述断路件X1用于驱使零线输入端与零线输出端断路以及用于驱使火线输入端与火线输出端断路。
作为优选,所述带有定时功能的漏电保护插头包括与零线输入端连接的零线插脚以及与火线输入端连接的火线插脚,所述零线插脚设有零线延长柱,所述火线插脚设有火线延长柱,所述零线延长柱和火线延长柱分别穿过零序互感器。
本实用新型的有益效果:通过令断路件的两端在发生漏电时或在预设时间之外时有压差,以驱动断路件进行断路,从而令漏电保护插头既有漏电保护功能又有定时功能。
附图说明
图1为本实用新型的电路图。
图2为本实用新型的漏电保护插头的立体结构图。
图3为本实用新型的漏电保护插头的内部结构图。
附图标记为:1、火线插脚;11、火线延长柱;2、零序互感器;3、零线输入端;4、火线输入端;5、零线输出端;6、火线输出端;7、零线插脚;71、零线延长柱。
具体实施方式
为了便于本领域技术人员的理解,下面结合实施例与附图对本实用新型作进一步的说明,实施方式提及的内容并非对本实用新型的限定。以下结合附图对本实用新型进行详细的描述。
如图1所示,一种带有定时功能的电路,包括定时芯片U2、隔离开关U3、整流模块D3、开关管Q4、开关管Q3、电阻R21、电阻R26、电阻R16、电容C11、零序互感器2、微处理器U1以及断路件X1,所述定时芯片U2的输出端与所述隔离开关U3的控制端连接,整流模块D3的输入端与外部交流电源连接,隔离开关U3的第一开关端通过电阻R26与整流模块D3的输出端连接,开关管Q3的第一开关端通过电阻R16与整流模块D3的输出端连接,隔离开关U3的第二开关端和开关管Q3的第二开关端分别接地,整流模块D3的输出端与断路件X1的控制端连接,电阻R21的一端与外部交流电源连接,开关管Q4的第一开关端和开关管Q3的控制端分别与电阻R21的另一端连接,开关管Q4的第二开关端接地,电容C11并联在开关管Q4的第一开关端和第二开关端之间,零序互感器2的输出端与微处理器U1的第一输入端连接,微处理U1的输出端与开关管Q4的控制端连接。
断路件X1具体为可为电磁铁以及设置在电源回路中的开关,当断路件X1两端有压差时,电磁铁带有磁性并吸附电源回路中的开关使得开关断开,并使得电源回路断路;断路件X1两端没有压差时,电磁铁没有磁性,电源回路中的开关闭合,并使得电源回路导通。上述电路具体工作流程为:定时芯片U2在预定时间内输出关断信号,使得电阻R26不接地,无法造成断路件X1两端的压差;在预定时间内,当零序互感器2没有检测到发生漏电时,微处理器U1控制开关管Q4导通以使开关管Q3关断,此时断路件X1两端没有压差,当零序互感器2检测到发生漏电时,微处理器U1控制开关管Q4关断以使开关管Q3导通,此时断路件X1两端有压差;定时芯片U2在非预定时间内输出导通信号,使得电阻R26接地,此时断路件X1两端有压差。
如图1所示,所述带有定时功能的电路还包括手动开关S3,所述手动开关S3的第一开关端与整流模块D3的输出端连接,所述手动开关S3的第二开关端接地,使得使用者可以手动复位断路件X1。
如图1所示,所述带有定时功能的电路还包括二极管D4和电阻R22,二极管D4的阴极与开关管Q3的第二开关端连接,二极管D4的阳极通过电阻R22与外部交流电源连接,微处理器U1的第二输入端与二极管D4的阳极连接。在一些实施例中,带有定时功能的电路每隔一段时间便会进行自动检测,检测过程为:微处理器U1的控制开关管Q4关断以使开关管Q3导通,当开关管Q4和开关管Q3没有损坏时,二极管D4在外部交流电源为正时导通,微处理器U1的输入端被置低电平,二极管D4在外部交流电源输入的电压为负时关断,微处理器U1的输入端被悬空,相当于被置高电平,即微处理器U1的输入端在元件正常时会在高低电平间切换。当开关管Q4和开关管Q3损坏时,开关管Q3会持续处于导通状态,此时二极管D4因两端没有压降而不导通,微处理器U1的输入端被悬空,长时间处于高电平。在上述实施例中,对用于驱使回路断路的元件定时进行自检,从而使得使用者能够提早发现元件异常的情况,并保障用电设备和使用者的安全。
如图1所示,所述带有定时功能的电路还包括晶闸管SCR,开关管Q3的第二开关端通过晶闸管SCR接地,晶闸管SCR的控制端与微处理器的输出端连接。使得微处理器U1可以进一步通过晶闸管SCR控制断路件X1。
如图2和图3所示,一种带有定时功能的漏电保护插头,包括零线输入端3、火线输入端4、与零线输入端3电连接的零线输出端5、与火线输入端4电连接的火线输出端6以及上述电路,所述断路件X1用于驱使零线输入端3与零线输出端5断路以及用于驱使火线输入端4与火线输出端6断路,从而使得漏电保护插头既具有漏电保护功能又有定时功能。具体地,零线输入端3用于与外部交流电源的零线连接,火线输入端4用于与外部交流电源的火线连接。
如图3所示,所述带有定时功能的漏电保护插头包括与零线输入端3连接的零线插脚7以及与火线输入端4连接的火线插脚1,所述零线插脚7设有零线延长柱71,所述火线插脚1设有火线延长柱11,所述零线延长柱71和火线延长柱11分别穿过零序互感器2,从而通过简单的结构实现零序互感器2对零线和火线漏电情况的检测。
以上所述,仅是本实用新型较佳实施例而已,并非对本实用新型作任何形式上的限制,虽然本实用新型以较佳实施例公开如上,然而并非用以限定本实用新型,任何熟悉本专业的技术人员,在不脱离本实用新型技术方案范围内,当利用上述揭示的技术内容作出些许变更或修饰为等同变化的等效实施例,但凡是未脱离本实用新型技术方案内容,依据本实用新型技术是指对以上实施例所作的任何简单修改、等同变化与修饰,均属于本实用新型技术方案的范围内。

Claims (6)

1.一种带有定时功能的电路,其特征在于:包括定时芯片U2、隔离开关U3、整流模块D3、开关管Q4、开关管Q3、电阻R21、电阻R26、电阻R16、电容C11、零序互感器、微处理器U1以及断路件X1,所述定时芯片U2的输出端与所述隔离开关U3的控制端连接,整流模块D3的输入端与外部交流电源连接,隔离开关U3的第一开关端通过电阻R26与整流模块D3的输出端连接,开关管Q3的第一开关端通过电阻R16与整流模块D3的输出端连接,隔离开关U3的第二开关端和开关管Q3的第二开关端分别接地,整流模块D3的输出端与断路件X1的控制端连接,电阻R21的一端与外部交流电源连接,开关管Q4的第一开关端和开关管Q3的控制端分别与电阻R21的另一端连接,开关管Q4的第二开关端接地,电容C11并联在开关管Q4的第一开关端和第二开关端之间,零序互感器的输出端与微处理器U1的第一输入端连接,微处理U1的输出端与开关管Q4的控制端连接。
2.根据权利要求1所述的一种带有定时功能的电路,其特征在于:所述带有定时功能的电路还包括手动开关S3,所述手动开关S3的第一开关端与整流模块D3的输出端连接,所述手动开关S3的第二开关端接地。
3.根据权利要求1所述的一种带有定时功能的电路,其特征在于:所述带有定时功能的电路还包括二极管D4和电阻R22,二极管D4的阴极与开关管Q3的第二开关端连接,二极管D4的阳极通过电阻R22与外部交流电源连接,微处理器U1的第二输入端与二极管D4的阳极连接。
4.根据权利要求1所述的一种带有定时功能的电路,其特征在于:所述带有定时功能的电路还包括晶闸管SCR,开关管Q3的第二开关端通过晶闸管SCR接地,晶闸管SCR的控制端与微处理器的输出端连接。
5.一种带有定时功能的漏电保护插头,其特征在于:包括零线输入端、火线输入端、与零线输入端电连接的零线输出端、与火线输入端电连接的火线输出端以及权利要求1-4任一项权利要求所述的电路,所述断路件X1用于驱使零线输入端与零线输出端断路以及用于驱使火线输入端与火线输出端断路。
6.根据权利要求5所述的一种带有定时功能的漏电保护插头,其特征在于:所述带有定时功能的漏电保护插头包括与零线输入端连接的零线插脚以及与火线输入端连接的火线插脚,所述零线插脚设有零线延长柱,所述火线插脚设有火线延长柱,所述零线延长柱和火线延长柱分别穿过零序互感器。
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KR101247208B1 (ko) * 2012-08-07 2013-03-26 엠티엔시 (주) 누전 차단 장치
CN206302016U (zh) * 2016-12-28 2017-07-04 东莞市拓诚实业有限公司 一种定时漏电保护器
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