WO2008061441A1 - Magnetic latching relay with over-current proctection - Google Patents

Magnetic latching relay with over-current proctection Download PDF

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Publication number
WO2008061441A1
WO2008061441A1 PCT/CN2007/003256 CN2007003256W WO2008061441A1 WO 2008061441 A1 WO2008061441 A1 WO 2008061441A1 CN 2007003256 W CN2007003256 W CN 2007003256W WO 2008061441 A1 WO2008061441 A1 WO 2008061441A1
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WO
WIPO (PCT)
Prior art keywords
overcurrent protection
base
coil
circuit
over
Prior art date
Application number
PCT/CN2007/003256
Other languages
French (fr)
Chinese (zh)
Inventor
Dechang Lu
Original Assignee
Dechang Lu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dechang Lu filed Critical Dechang Lu
Publication of WO2008061441A1 publication Critical patent/WO2008061441A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/18—Movable parts of magnetic circuits, e.g. armature
    • H01H50/24—Parts rotatable or rockable outside coil
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings
    • H01H50/443—Connections to coils

Definitions

  • the present invention relates to the field of magnetic holding relays, and more particularly to a magnetic holding relay with overcurrent protection.
  • a common magnetic holding relay generally has a structure including a base, an electromagnetic coil and a yoke provided at both ends of the base, and an arm is disposed between the two yokes, and a movable spring and a static spring are arranged on one side of the base.
  • the cymbal arm moves the moving reed through the intermediate connecting block.
  • the overcurrent protection is generally achieved by the electronic detecting device on the circuit, but when the circuit is short-circuited, the electronic detecting device does not Due to the protective effect, the relay and power supply circuit will be burned quickly, causing safety accidents and reducing the safety and reliability of the load circuit.
  • a magnetic holding relay with overcurrent protection comprising a base and an electromagnetic coil disposed on the base, each end of the base being provided with a yoke, between the two yokes
  • a driving arm assembly is provided, and a contact piece that can be driven by the driving arm assembly is disposed on one side of the base, wherein: the magnetic flux circuit of the electromagnetic coil is provided with an overcurrent protection coil, and the two terminals of the overcurrent protection coil are provided.
  • the overcurrent protection coil is coaxial with the electromagnetic coil and is disposed inside and outside.
  • the overcurrent protection coil is coaxial with the electromagnetic coil and is disposed above and below.
  • An overcurrent protection coil is arranged on the magnetic line circuit of the relay electromagnetic coil, and the two terminals of the overcurrent protection coil are connected with the power supply circuit, the load and the contact circuit.
  • the overcurrent protection coil When an overcurrent or short circuit occurs in the loop, and the loop current exceeds the preset threshold current of the overcurrent protection coil, the overcurrent protection coil generates a sufficient magnetic field force to cause the magnetic holding relay to reverse, driving the contact to separate and disconnect the loop.
  • the current state is memorized by the relay itself, effectively protecting the circuit loop that has an overcurrent or short circuit, and is safe and reliable.
  • FIG. 1 is a schematic view showing the structure of a preferred embodiment of the present invention.
  • Figure 2 is a schematic view showing the structure of Embodiment 2 of the present invention.
  • Figure 3 is a schematic view showing the structure of Embodiment 3 of the present invention.
  • Figure 4 is a schematic view showing the structure of Embodiment 4 of the present invention.
  • the magnetic holding relay with overcurrent protection of the present invention comprises a base 1 and an electromagnetic coil 2 disposed on the base 1, and an electromagnetic core is generally disposed in the middle of the electromagnetic coil 2.
  • the yoke 1 is provided with a yoke 3 at each end thereof, and a driving arm assembly 4 is disposed between the two yokes 3.
  • the driving arm assembly 4 is movably positioned between the two yokes through the connecting member, and generally has a magnetic body therein.
  • the steel, wherein the drive arm assembly 4 can be a rotary structure, as shown in Figures 1 and 2, can also be a straight moving structure, as shown in Figures 3 and 4.
  • the base 1 is provided with a contact piece on one side, and the contact piece may be a double reed structure or a 'multi-reed structure, and includes at least one set of normally closed or normally open static reeds and can be driven by the driving arm assembly 4
  • the driving arm assembly 4 drives the moving reed to realize the contact of the moving spring and the static reed to achieve the closing or opening of the control circuit.
  • an overcurrent protection coil 6 is provided on the magnetic line circuit of the electromagnetic coil 2, the two terminals of the overcurrent protection coil 6 and the power supply circuit, the load 7 and the contact circuit.
  • the threshold of the protection current calculated by the overcurrent protection coil 6 should be several times or more of the rated current of the circuit when the circuit permits.
  • the overcurrent protection coil 6 is coaxial with the electromagnetic coil 2 and is disposed inside and outside.
  • the overcurrent protection coil 6 it is preferable to fit the overcurrent protection coil 6 to the outside of the electromagnetic coil 2, and in the overcurrent protection coil 6 And the electromagnetic coil 2 is charged Insulation isolation, as shown in Figure 1 and Figure 3; At the same time, the overcurrent protection coil 6 and the electromagnetic coil 2 can also be coaxially disposed in the insulating protective layer and arranged up and down, as shown in Figures 2 and 4.
  • the overcurrent protection coil 6 When an overcurrent or short circuit occurs in the loop and the loop current exceeds the preset threshold current of the overcurrent protection coil 6, the overcurrent protection coil 6 generates a sufficiently large magnetic field force to invert the magnetic holding relay, driving the two contacts apart and breaking.
  • the circuit is opened, and the current state of the contact is memorized by the relay, so that the circuit is kept in the off state, effectively protecting the circuit loop that has an overcurrent or short circuit, and greatly improving the safety and reliability of the circuit.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Emergency Protection Circuit Devices (AREA)

Abstract

A magnetic latching relay with an over-current protection comprises a base and an electromagnetic winding set on the base. Yokes are provided on the two ends of the base. A driving arm assembly is set between the yokes. A contact sheet which can be driven by the driving arm assembly is set on one side of the base. An over-current protecting winding is set on the magnetic line loop of the electromagnetic winding. Two ends of the over-current protecting winding are connected to the power supplying circuit, the load and the contact sheet.

Description

一种带过流保护的磁保持继电器 技术领域  Magnetic retention relay with overcurrent protection
本发明涉及磁保持继电器领域， 具体说是一种带过流保护的磁保持继电 器。  The present invention relates to the field of magnetic holding relays, and more particularly to a magnetic holding relay with overcurrent protection.
背景技术 Background technique
目前， 常见的磁保持继电器， 其结构一般包括基座， 电磁线圈和设于机座 两端的轭铁， 两轭铁之间设有跷臂， 机座一侧设有动簧片及和静簧片， 跷臂通 过中间连接块带动动簧片动作。 当电磁线圈通以不同流向的脉冲电流时， 其所 产生的磁场力使跷臂摆动， 连接块与动簧片随之由跷臂带动而左右摆动， 进而 实现动簧片与静簧片的触离， 达到控制电路的闭合或断开， 其后， 磁保持錘电 器就会记忆当前状态， 达到继电器的节能效果。 然而， 在实际应用磁保持继电 器的回路上， 为了电路具有必要的安全保护， 一般都在回路上以电子检测装置 达到过流保护的目的， 但当回路出现短路时， 电子检测装置就起不到应有的保 护作用， 继电器和供电回路会被迅速烧毁， 造成安全事故， 降低负载回路的安 全可靠性。  At present, a common magnetic holding relay generally has a structure including a base, an electromagnetic coil and a yoke provided at both ends of the base, and an arm is disposed between the two yokes, and a movable spring and a static spring are arranged on one side of the base. The cymbal arm moves the moving reed through the intermediate connecting block. When the electromagnetic coil is subjected to a pulse current of different flow directions, the magnetic force generated by the electromagnetic coil causes the arm to swing, and the connecting block and the moving spring are then oscillated by the arm to move left and right, thereby realizing the contact between the moving spring and the static spring. After the control circuit is closed or disconnected, the magnetic holding hammer will remember the current state and achieve the energy saving effect of the relay. However, in the circuit of the actual application of the magnetic holding relay, in order to have the necessary safety protection of the circuit, the overcurrent protection is generally achieved by the electronic detecting device on the circuit, but when the circuit is short-circuited, the electronic detecting device does not Due to the protective effect, the relay and power supply circuit will be burned quickly, causing safety accidents and reducing the safety and reliability of the load circuit.
发明内容 Summary of the invention
本发明的目的在于克服现有技术的不足，提供一种在回路过流和短路时能 有效保护电路、 安全可靠的带过流保护的磁保持继电器。 . 本发明的发明目的是这样实现的： 一种带过流保护的磁保持继电器，包括 基座和设于基座上的电磁线圈，基座两端各设有轭铁， 两轭铁之间设有驱动臂 总成， 基座一侧设有可由驱动臂总成带动的触片， 其特征在于： 所述电磁线圈 的磁力线回路上设有过流保护线圈， 过流保护线圈的两接线端与供电电路、 负 载及触片回路连接。  SUMMARY OF THE INVENTION The object of the present invention is to overcome the deficiencies of the prior art and to provide a magnetic holding relay with overcurrent protection that can effectively protect the circuit when the circuit is overcurrent and short circuited. The object of the present invention is achieved as follows: A magnetic holding relay with overcurrent protection, comprising a base and an electromagnetic coil disposed on the base, each end of the base being provided with a yoke, between the two yokes A driving arm assembly is provided, and a contact piece that can be driven by the driving arm assembly is disposed on one side of the base, wherein: the magnetic flux circuit of the electromagnetic coil is provided with an overcurrent protection coil, and the two terminals of the overcurrent protection coil are provided. Connect to the power supply circuit, load, and contact loop.
所述过流保护线圈与电磁线圈同轴并内外设置。  The overcurrent protection coil is coaxial with the electromagnetic coil and is disposed inside and outside.
所述过流保护线圈与电磁线圈同轴并上下设置。  The overcurrent protection coil is coaxial with the electromagnetic coil and is disposed above and below.
本发明与现有技术的磁保持继电器相比， 具有以下优点: 在继电器电磁线圈的磁力线回路上设有过流保护线圈，过流保护线圈的两 接线端与供电电路、 负载及触片回路连接。 当回路出现过流或短路， 回路电流 超过过流保护线圈预设的阀值电流时，过流保护线圈就会产生足够大的磁场力 使磁保持继电器翻转， 驱动触片分离而断开回路， 并由继电器本身将当前状态 记忆， 有效保护出现过流或短路的电路回路、 安全可靠。 Compared with the prior art magnetic holding relay, the present invention has the following advantages: An overcurrent protection coil is arranged on the magnetic line circuit of the relay electromagnetic coil, and the two terminals of the overcurrent protection coil are connected with the power supply circuit, the load and the contact circuit. When an overcurrent or short circuit occurs in the loop, and the loop current exceeds the preset threshold current of the overcurrent protection coil, the overcurrent protection coil generates a sufficient magnetic field force to cause the magnetic holding relay to reverse, driving the contact to separate and disconnect the loop. The current state is memorized by the relay itself, effectively protecting the circuit loop that has an overcurrent or short circuit, and is safe and reliable.
附图说明 DRAWINGS
附图 1为本发明最佳实施例的结构示意图。  1 is a schematic view showing the structure of a preferred embodiment of the present invention.
附图 2为本发明实施例 2的结构示意图。  Figure 2 is a schematic view showing the structure of Embodiment 2 of the present invention.
附图 3为本发明实施例 3的结构示意图。  Figure 3 is a schematic view showing the structure of Embodiment 3 of the present invention.
附图 4为本发明实施例 4的结构示意图。  Figure 4 is a schematic view showing the structure of Embodiment 4 of the present invention.
具体实施方式 detailed description
下面结合附图对本发明作进一步的描述。  The invention will now be further described with reference to the accompanying drawings.
根据图 1和图 2所示， 本发明的带过流保护的磁保持继电器， 包括基座 1 和设于基座 1上的电磁线圈 2 , 电磁线圈 2中间一般还设有铁芯。 基座 1两端 各设有轭铁 3， 两轭铁 3之间设有驱动臂总成 4， 驱动臂总成 4通过连接件活 动定位在两扼铁之间， 其内一般还带有磁钢，其中， 驱动臂总成 4可为旋转式 结构， 如图 1和图 2所示， 也可为平直的移动式结构， 如图 3和图 4所示。 基 座 1一侧设有触片， 触片可为双簧片结构， 也可为'多簧片结构， 并包括至少一 组常闭或常开的静簧片和可由驱动臂总成 4带动的动簧片，当电磁线圈 2通以 不同流向的脉冲电流， 驱动臂总成 4便带动动簧片动作， 实现动簧片与静簧片 的触离， 达到控制电路的闭合或断开。 同时， 为使磁保持继电器具有过流和短 路保护能力， 在电磁线圈 2的磁力线回路上设有过流保护线圈 6 , 过流保护线 圈 6的两接线端与供电电路、 负载 7及触片回路连接， 并且， 为了避免过流保 护线圈 6产生误动作现象， 在回路允许的情况下， 过流保护线圈 6所计算设定 的保护电流的阀值应是回路额定电流的数倍或以上。 而且，根据实际的设计和 制造要求， 过流保护线圈 6与电磁线圈 2同轴并内外设置， 宜将过流保护线圈 6套于电磁线圈 2的外部为最佳， 并在过流保护线圈 6和电磁线圈 2之间以充 分的绝缘隔离， 如图 1和图 3所示； 同时， 过流保护线圈 6与电磁线圈 2也可 同轴设于绝缘保护层内并上下设置， 如图 2和图 4所示。 当回路出现过流或短 路， 回路电流超过过流保护线圈 6预设的阀值电流时， 过流保护线圈 6就会产 生足够大的磁场力使磁保持继电器翻转， 驱动两触片分离而断开回路， 而触片 的当前状态即由继电器记忆，使电路保持在断开状态， 有效保护出现过流或短 路的电路回路、 大大提高了电路的安全可靠性。 According to FIG. 1 and FIG. 2, the magnetic holding relay with overcurrent protection of the present invention comprises a base 1 and an electromagnetic coil 2 disposed on the base 1, and an electromagnetic core is generally disposed in the middle of the electromagnetic coil 2. The yoke 1 is provided with a yoke 3 at each end thereof, and a driving arm assembly 4 is disposed between the two yokes 3. The driving arm assembly 4 is movably positioned between the two yokes through the connecting member, and generally has a magnetic body therein. The steel, wherein the drive arm assembly 4 can be a rotary structure, as shown in Figures 1 and 2, can also be a straight moving structure, as shown in Figures 3 and 4. The base 1 is provided with a contact piece on one side, and the contact piece may be a double reed structure or a 'multi-reed structure, and includes at least one set of normally closed or normally open static reeds and can be driven by the driving arm assembly 4 When the electromagnetic coil 2 is connected with pulse currents of different flow directions, the driving arm assembly 4 drives the moving reed to realize the contact of the moving spring and the static reed to achieve the closing or opening of the control circuit. At the same time, in order to make the magnetic holding relay have overcurrent and short circuit protection capability, an overcurrent protection coil 6 is provided on the magnetic line circuit of the electromagnetic coil 2, the two terminals of the overcurrent protection coil 6 and the power supply circuit, the load 7 and the contact circuit In order to prevent the overcurrent protection coil 6 from malfunctioning, the threshold of the protection current calculated by the overcurrent protection coil 6 should be several times or more of the rated current of the circuit when the circuit permits. Moreover, according to the actual design and manufacturing requirements, the overcurrent protection coil 6 is coaxial with the electromagnetic coil 2 and is disposed inside and outside. It is preferable to fit the overcurrent protection coil 6 to the outside of the electromagnetic coil 2, and in the overcurrent protection coil 6 And the electromagnetic coil 2 is charged Insulation isolation, as shown in Figure 1 and Figure 3; At the same time, the overcurrent protection coil 6 and the electromagnetic coil 2 can also be coaxially disposed in the insulating protective layer and arranged up and down, as shown in Figures 2 and 4. When an overcurrent or short circuit occurs in the loop and the loop current exceeds the preset threshold current of the overcurrent protection coil 6, the overcurrent protection coil 6 generates a sufficiently large magnetic field force to invert the magnetic holding relay, driving the two contacts apart and breaking. The circuit is opened, and the current state of the contact is memorized by the relay, so that the circuit is kept in the off state, effectively protecting the circuit loop that has an overcurrent or short circuit, and greatly improving the safety and reliability of the circuit.

Claims

1. 一种带过流保护的磁保持继电器， 包括基座 （1) 和设于基座 （1) 上 的电磁线圈 （2)， 基座 （1 ) 两端各设有轭铁（3), 两轭铁（3)之间设有驱动 臂总成 （4)， 基座 （1 ) 一侧设有可由驱动臂总成（4) 带动的触片 （5), 其特 征在于： 所述电磁线圈 （2) 的磁力线回路上设有过流保护线圈 （6)， 过流保 护线圈 （6) 的两接线端与供电电路、 负载 （7) 及触片 （5) 回路连接。 A magnetic holding relay with overcurrent protection, comprising a base (1) and an electromagnetic coil (2) disposed on the base (1), and a yoke (3) at each end of the base (1) a driving arm assembly (4) is disposed between the two yokes (3), and a contact piece (5) driven by the driving arm assembly (4) is disposed on one side of the base (1), wherein: An overcurrent protection coil (6) is arranged on the magnetic line circuit of the electromagnetic coil (2), and the two terminals of the overcurrent protection coil (6) are connected to the power supply circuit, the load (7) and the contact (5).
2. 根据权利要求 1所述磁保持继电器， 其特征在于： 所述过流保护线圈 (6) 与电磁线圈 （2) 同轴并内外设置。  The magnetic holding relay according to claim 1, characterized in that the overcurrent protection coil (6) is coaxial with the electromagnetic coil (2) and is disposed inside and outside.
3. 根据权利要求 1所述磁保持继电器， 其特征在于： 所述过流保护线圈 (6) 与电磁线圈 （2) 同轴并上下设置。  The magnetic holding relay according to claim 1, characterized in that: the overcurrent protection coil (6) is coaxial with the electromagnetic coil (2) and is disposed above and below.
PCT/CN2007/003256 2006-11-22 2007-11-19 Magnetic latching relay with over-current proctection WO2008061441A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200610123719XA CN1996533B (en) 2006-11-22 2006-11-22 A magnetic self-perpetuating relay for the over current protection
CN200610123719.X 2006-11-22

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Publication Number Publication Date
WO2008061441A1 true WO2008061441A1 (en) 2008-05-29

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1996533B (en) * 2006-11-22 2010-10-06 陆德昌 A magnetic self-perpetuating relay for the over current protection
CN103367065A (en) * 2012-04-05 2013-10-23 厦门赛尔特电子有限公司 Current-limiting fuse with overcurrent and short circuit protection

Citations (3)

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JPH07335089A (en) * 1994-06-06 1995-12-22 Fuji Electric Co Ltd Overcurrent relay
CN2750456Y (en) * 2004-11-16 2006-01-04 乐清市格蕾特电子电器有限公司 Magnetic latching relay
CN1996533A (en) * 2006-11-22 2007-07-11 陆德昌 A magnetic self-perpetuating relay for the over current protection

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Publication number Priority date Publication date Assignee Title
EP0065852B1 (en) * 1981-05-22 1988-08-24 LUCAS INDUSTRIES public limited company Relay circuit and relay therefor
CN2295271Y (en) * 1996-10-28 1998-10-21 康兆春 Megnetic high-power-keeping pulse bistable relay
CN2704105Y (en) * 2004-05-10 2005-06-08 齐长武 Automatic protective relay for automobile circuit short
CN201004437Y (en) * 2006-11-22 2008-01-09 陆德昌 A magnetic holding relay with over-current protection

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
JPH07335089A (en) * 1994-06-06 1995-12-22 Fuji Electric Co Ltd Overcurrent relay
CN2750456Y (en) * 2004-11-16 2006-01-04 乐清市格蕾特电子电器有限公司 Magnetic latching relay
CN1996533A (en) * 2006-11-22 2007-07-11 陆德昌 A magnetic self-perpetuating relay for the over current protection

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CN1996533B (en) 2010-10-06

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