WO2014154056A2 - 一种非对称螺线管式结构的磁保持继电器 - Google Patents

一种非对称螺线管式结构的磁保持继电器 Download PDF

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Publication number
WO2014154056A2
WO2014154056A2 PCT/CN2014/071724 CN2014071724W WO2014154056A2 WO 2014154056 A2 WO2014154056 A2 WO 2014154056A2 CN 2014071724 W CN2014071724 W CN 2014071724W WO 2014154056 A2 WO2014154056 A2 WO 2014154056A2
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WO
WIPO (PCT)
Prior art keywords
iron core
magnetic
coil
static iron
moving
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PCT/CN2014/071724
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English (en)
French (fr)
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WO2014154056A3 (zh
Inventor
钟叔明
饶丽斌
Original Assignee
厦门宏发电力电器有限公司
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Filing date
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Application filed by 厦门宏发电力电器有限公司 filed Critical 厦门宏发电力电器有限公司
Priority to EP14776269.4A priority Critical patent/EP2980826A4/en
Priority to US14/780,035 priority patent/US9640336B2/en
Priority to KR1020157028134A priority patent/KR101770630B1/ko
Priority to JP2016504461A priority patent/JP6259068B2/ja
Publication of WO2014154056A2 publication Critical patent/WO2014154056A2/zh
Publication of WO2014154056A3 publication Critical patent/WO2014154056A3/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/54—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by magnetic force
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/121—Guiding or setting position of armatures, e.g. retaining armatures in their end position
    • H01F7/122—Guiding or setting position of armatures, e.g. retaining armatures in their end position by permanent magnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/16—Magnetic circuit arrangements
    • H01H50/36—Stationary parts of magnetic circuit, e.g. yoke
    • H01H50/42—Auxiliary magnetic circuits, e.g. for maintaining armature in, or returning armature to, position of rest, for damping or accelerating movement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2209—Polarised relays with rectilinearly movable armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/27—Relays with armature having two stable magnetic states and operated by change from one state to the other
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/546—Contact arrangements for contactors having bridging contacts

Definitions

  • the invention relates to a magnetic holding relay, in particular to a magnetic holding of an asymmetric solenoid structure
  • the magnetic retention relay is a new type of relay developed in recent years and is also an automatic switch. Like other electromagnetic relays, it automatically turns the circuit on and off. The difference is that the magnetic holding relay is a bistable relay that remains in the excited state after the excitation amount is removed.
  • the electromagnetic relay of the solenoid type magnetic circuit structure is one of the relays.
  • the electromagnetic relay of the prior art solenoid type magnetic circuit structure is shown in FIG. 1 , which includes a magnetic circuit portion, a contact portion, a pushing portion and a shell.
  • the magnetic circuit portion, the contact portion and the pushing portion are respectively mounted in the housing 100;
  • the contact portion includes a moving spring portion and a static spring portion, and the moving spring portion is composed of the movable spring 101 and the movable contact 102, and the static spring portion It is composed of a static reed 103 and a stationary contact 104, and the movable contact 102 and the stationary contact 104 are disposed at an appropriate position so that when the relay operates, the movable contact 102 and the stationary spring portion of the moving spring portion
  • the static contact 104 can be in contact;
  • the magnetic circuit portion includes a magnetic conductive member, a bobbin (not shown), and a coil 105, and the magnetic conductive member includes a U-shaped
  • the static iron core 108 is mounted in the bobbin, and the U-shaped yoke 106 and the yoke plate 107 are connected in a frame shape, and the static iron core 108 and the coil 105 are accommodated therein;
  • the pushing portion includes the movable iron core 109, and is pushed Rod 1 10 and holder 1 1 1, the moving spring portion is mounted on the holder 1 1 1 , and a compression spring 1 12 is matched to ensure the overstroke when the relay is operated;
  • the movable iron core 109 is disposed in a frame shape formed by the U-shaped yoke 106 and the yoke plate 107, and is connected with the static iron core 108 is matched, one end of the push rod 1 10 is fixed to the movable iron core 109, and the other end of the push rod 1 10 is connected to the fixed frame 1 1 1 .
  • the action and release of the relay are ensured by the suction generated by the coil 105.
  • the coil 105 is connected to the positive and negative pulse voltages to drive the movable iron core 109 to move, and the moving spring portion and the static spring portion are closed and disconnected by the push rod 1 10 .
  • the function of the automatic switch is realized; for example, when the relay is activated, the coil 105 generates a large suction force to enable the movable iron core 109 to move in the axial direction, thereby driving the push portion to enable the relay to be closed, when the voltage of the coil 105 is lowered
  • the suction generated by the coil 105 ensures that the relay contacts remain closed.
  • the relay of the solenoid type magnetic circuit structure is unbalanced in the closing and opening direction, and generally the closing reaction force is greater than the breaking reaction force, which causes the operating voltage and the reset voltage of the relay to be unbalanced. 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 of an asymmetric solenoid structure, which is made magnetic by introducing a biased magnetic steel into a relay of a solenoid type magnetic circuit structure. Keeping the relay can not only take advantage of the low heat generated by the coil of the magnetic holding relay, but also balance the action reset voltage of the solenoid type magnetic circuit, thereby achieving the purpose of improving product performance and working reliability.
  • a magnetic holding relay of an asymmetric solenoid structure comprising a magnetic circuit portion, a contact portion, and a pushing portion; the pushing portion is fitted between the magnetic circuit portion and the contact portion
  • the pushing portion includes a moving iron core;
  • the magnetic circuit portion includes a magnetic conductive member, a bobbin, and a coil;
  • the moving iron core is disposed at a position that cooperates with the magnetic conductive member and can be along the axis of the coil when the coil is energized Directional activity; further comprising two pieces of magnetic steel respectively disposed on both sides of the coil axis and respectively contacting or contacting the corresponding side portions of the magnetic conductive member, and the two pieces of magnetic steel are in the axial direction of the coil
  • the moving iron core is in the movable range of the movable iron core and is biased toward the moving direction of the moving iron core when the contact is closed; and the moving iron core has the same holding force of the movable iron core when the contact is closed and opened.
  • the magnetic conductive component includes a yoke component and a first static iron core mounted in the bobbin; the movable iron core is disposed at a position that cooperates with the first static iron core; and the two magnetic steels are respectively disposed on the coil Both sides of the axis are adjacent or in contact with corresponding sides of the yoke member, respectively.
  • the magnetic conductive component further includes a second static iron core disposed on an axis of the coil and on a side of the moving iron core moving direction when the contact is closed; the moving iron core is in the first static iron core Between the second static iron core and the second static iron core; the two magnetic steels are closer to the second static iron core in the axial direction of the coil.
  • the length dimension of the first static iron core is greater than the length dimension of the second static iron core.
  • the cross section of the second static iron core is larger than the cross section of the moving iron core.
  • the yoke member has a frame shape, and the bobbin, the coil, the magnetic steel, the first static iron core, and the second static iron core are respectively accommodated in a frame shape of the yoke member.
  • a magnetic steel card slot is respectively disposed on two sides of the upper end of the bobbin, and the two pieces of magnetic steel are respectively fixed in the magnetic steel card slots of the bobbin.
  • the magnetic steel card slot of the bobbin and the leading end of the coil are disposed at the same end of the bobbin.
  • the pushing portion further includes a pushing rod and a fixing frame, the moving spring portion is mounted on the fixing frame, and one end of the pushing rod is fixed to the movable iron core through the yoke member and the second static iron core, The other end of the push rod is connected to the fixed frame.
  • the fixing frame is provided with a boss for fixing the moving spring and the pressure spring, and the moving spring is fixed by the pre-pressure of the pressure spring.
  • the moving reed can be displaced in the direction of the coil axis to generate an overtravel.
  • the yoke member is composed of a U-shaped yoke and a yoke plate, and a yoke plate is attached to the upper end of the U-shaped yoke to form a frame shape.
  • the magnetic holding relay of the asymmetric solenoid type structure of the present invention introduces an asymmetric magnetic steel into a relay of a solenoid type magnetic circuit structure, so that the relay becomes a magnetic holding relay.
  • an unbalanced magnetic force is generated in the action and opening directions, because the magnetic steel is in the moving range of the moving iron core in the axial direction of the coil and is biased toward the side of the moving iron core when the contact is closed. , that is, closer to the second static iron core, so that the magnetic force generated by the magnetic steel in the closed position is greater than the magnetic force generated by the disconnected position, and the unbalanced reaction force formed by the solenoid magnetic circuit structure is also The reaction force in the closed state is greater than the reaction force generated in the open position. Due to the holding force F-F reaction force, this ensures that the holding force is balanced during the action and reset process.
  • the invention has the beneficial effects that since the asymmetric magnetic steel is introduced into the relay of the solenoid type magnetic circuit structure, the two magnetic steels are further included, and the two magnetic steels are respectively disposed on the coil axis.
  • the sides are respectively close to or in contact with the corresponding side portions of the yoke member, and the two pieces of magnetic steel are in the movable range of the moving iron core in the axial direction of the coil and are biased toward the moving direction of the moving iron core when the contact is closed;
  • the holding force of the moving iron core is substantially equal.
  • the asymmetric magnetic circuit structure formed by the magnetic steel bias can generate different magnetic forces in the closed state and the open state of the contact, and the moving iron core is superimposed on the reaction force of the closed and open states of the contact.
  • the holding force balances the holding force in the two states, thereby balancing the action of the magnetic holding relay and the reset voltage, improving product performance and operational reliability.
  • FIG. 1 is a schematic structural view of an electromagnetic relay of a prior art solenoid type magnetic circuit structure
  • FIG. 2 is a schematic structural view of a magnetic holding relay of an asymmetric solenoid type structure according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a magnetic circuit of a magnetic steel of a magnetic holding relay of an asymmetric solenoid type structure according to an embodiment of the present invention
  • FIG. 4 is a magnetic holding relay (contact closed state) of an asymmetric solenoid structure according to an embodiment of the present invention. Schematic diagram of the state of magnetic force, coil suction and reaction force;
  • Figure 5 is a view showing a state of magnetic force, coil suction force and reaction force of a magnetic holding relay (contact open state) of an asymmetric solenoid type structure according to an embodiment of the present invention
  • Figure 6 is a view showing a state in which the contact of the magnetic holding relay of the asymmetric solenoid type structure of the embodiment of the present invention is turned off;
  • Figure 7 is a schematic illustration of a contact closing process of a magnetic holding relay of an asymmetric solenoid type structure according to an embodiment of the present invention
  • Figure 8 is a view showing a state in which a contact is closed of a magnetic holding relay of an asymmetric solenoid type structure according to an embodiment of the present invention
  • Fig. 9 is a view showing a process of disconnecting a contact of a magnetic holding relay of an asymmetric solenoid type structure according to an embodiment of the present invention. detailed description
  • a magnetic holding relay of an asymmetric solenoid structure includes a magnetic circuit portion, a contact portion, a pushing portion and a housing 10; a magnetic circuit portion, a contact portion and a pushing portion. Mounted in the housing 10 respectively, and the pushing portion is fitted between the magnetic circuit portion and the contact portion; the pushing portion includes the moving iron core 21; the magnetic circuit portion includes a magnetic conductive member and a bobbin (not shown in the drawing) And the coil 31; the contact portion includes a moving spring portion and a static spring portion, the moving spring portion is composed of a moving spring 41 1 and a moving contact 412, and the stationary spring portion is composed of a static spring 421 and a stationary contact 422, and The contact 412 and the stationary contact 422 are disposed at an adapted position such that when the relay is actuated, the movable contact 412 of the moving spring portion is in contact with the stationary contact 422 of the stationary spring portion; the magnetically permeable member includes a frame-shaped y
  • the second static iron core 53 is biased such that the movable core 21 has substantially the same holding force of the movable iron core 21 in the closed and open state of the contacts.
  • the length dimension of the first static iron core 52 is larger than the length dimension of the second static iron core 53, and the length dimension herein refers to the length dimension in the axial direction of the coil 31.
  • the cross-sectional range (i.e., the cross-sectional area) of the second static iron core 53 is larger than the cross-sectional range of the movable iron core 21.
  • a magnetic steel card slot is respectively disposed on two sides of the upper end of the bobbin, and the two magnets 54 are respectively fixed in the magnetic steel card slot of the bobbin.
  • the magnetic steel card slot of the bobbin and the leading end of the coil are disposed at the same end of the bobbin.
  • the pushing portion further includes a pushing rod 22 and a fixing frame 23, the moving spring portion is mounted on the fixing frame 23, and one end of the pushing rod 22 passes through the yoke member and the second static iron core 53 and the moving iron The core 21 is fixed, and the other end of the push rod 22 is connected to the fixing frame 23.
  • the fixing frame 23 is provided with a boss for fixing the moving spring piece 41 1 and the compression spring 24, and the moving spring piece 41 1 is fixed by the pre-pressure of the pressure spring 24, and the moving spring piece 41 1 is displaceable in the axial direction of the coil 31 And the overtravel is generated.
  • the yoke member 51 is composed of a U-shaped yoke 51 1 and a yoke plate 512, and a yoke plate 512 is attached to the upper end of the U-shaped yoke 51 1 to form a frame shape.
  • the magnetic holding relay of the asymmetric solenoid structure of the embodiment of the present invention is characterized in that the magnetic steel 54 is closer to the second static iron core 53 in the axial direction of the coil 31, and the length of the first static iron core 52 is larger or even larger. In the length of the second static iron core 53, this makes the magnetic circuit of the entire magnetic circuit structure asymmetric; as shown in Fig. 3, the upper magnetic circuit A1 is relatively short, and the lower magnetic circuit A2 is relatively long, according to the magnetic circuit theory. The longer the magnetic circuit is, the larger the magnetic loss is, and the smaller the suction force is.
  • the magnetic force of the magnetic steel 54 at the position where the movable iron core 21 and the second static iron core 53 are in contact with each other is larger than the magnetic force at the position where the movable iron core 21 is in contact with the first static iron core 52 (under the same condition of the relative magnetic pole area) .
  • the moving iron core 21 is to be moved up and down, and the push rod 22 is slid up and down, and the upper end of the push rod 22 is connected to the fixed frame 23, so that when the push rod 22 is assembled, It is necessary to perforate between the movable iron core 21 and the second static iron core 53, which reduces the relative magnetic pole area of the upper surface of the movable iron core, that is, the relative magnetic pole area of the second static iron core 53 and the movable iron core 21 is smaller than the first magnetic pole area.
  • the present invention balances the imbalance of the relative magnetic pole area by designing the length dimension of the first static iron core 52 to be larger than the length dimension of the second static iron core 53.
  • the present invention also designs the movable iron core 21 to be smaller than the prior art moving iron core, so that the weight of the movable iron core 21 itself becomes smaller, so that the size of the magnetic steel 54 can be relatively reduced, and the touch is ensured.
  • the magnetic steel 54 has sufficient magnetic force to maintain the movable iron core 21 in a position in contact with the second static iron core 53.
  • an asymmetric magnetic steel 54 is introduced into the relay of the solenoid type magnetic circuit structure, so that the relay becomes a magnetic holding relay. As shown in FIG. 4 and FIG.
  • the magnetic force F magnetic force 1 generated in the closed position is generally larger than the magnetic force F magnetic force 2 generated in the disconnected position, and the above-mentioned unbalanced reaction force is also the reaction force F in the closed state.
  • the reaction force F generated by the position is 2, and the force F is the magnetic force - F reaction force, which ensures that the force is kept balanced during the action and reset process.
  • the magnetic holding relay of the asymmetric solenoid structure of the embodiment of the present invention is further described below with reference to FIG. 6 to FIG. 9, in the disconnected state (as shown in FIG. 6), the magnetic force of the magnetic steel, the moving iron core 21 In contact with the first static iron core 52; during the closing process (as shown in FIG. 7), the coil 31 of the relay applies a voltage to generate an upward coil suction force, and the upward coil suction force is greater than the magnetic steel downward magnetic force, moving iron The core 21 moves upward, and the downward magnetic force of the magnetic steel gradually becomes smaller as the air gap becomes larger.
  • the magnetic steel 54 When the moving iron core 21 moves to the vicinity of the intermediate value of the air gap, the magnetic steel 54 generates downward. The magnetic force is greater than the upward magnetic force until the relay is turned off. When the driving voltage is removed, the relay remains in the off state under the downward magnetic force of the magnetic steel 54 (as shown in Fig. 6).
  • the above-mentioned magnetic steel 54 functions mainly by being placed close to the position of the second static iron core 53, so that the magnetic circuit composed of the magnetic steel 54 and the yoke plate 512 and the second static iron core 53 is compared with the magnetic steel 54 and
  • the magnetic circuit composed of the U-shaped yoke 51 1 and the first static iron core 52 is short, so that the magnetic force generated by the magnetic steel 54 in the upper circuit is greater than the magnetic force generated in the lower circuit, that is, the magnetic force generated in the closed state is larger than The amount of magnetic force in the disconnected state.
  • the bonding area of the upper magnetic circuit is generally smaller than that of the lower magnetic circuit, and the gravity of the movable iron core 21 is added to The closing process requires that the suction force generated by the coil is greater than the breaking process.
  • the magnetic steel 54 is placed on the upper magnetic circuit as in the above structure, the magnetic force generated is large and small, thereby compensating for the suction generated by the coil 31.

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  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
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Abstract

本发明公开了一种非对称螺线管式结构的磁保持继电器，包括磁路部分、接触部分和推动部分；磁路部分包括导磁部件、线圈架和线圈；推动部分包括动铁芯；还包括两块磁钢，两块磁钢分别设在线圈轴线的两侧并分别与导磁部件的对应侧部相靠近或相接触，且两块磁钢在线圈的轴线方向上处于动铁芯的活动范围内并偏向触点闭合时动铁芯移动方向一侧；使动铁芯在触点闭合和断开状态下，动铁芯的保持力基本相等。本发明通过在螺线管式磁路结构的继电器中引入偏置的磁钢，使继电器成为磁保持继电器，既能发挥磁保持继电器的线圈发热少的优势，同时又能解决螺线管式磁路不平衡的动作复归电压问题，从而达到提升产品性能和工作可靠性的目的。

Description

一种非对称螺线管式结构的磁保持继电器
技术领域
本发明涉及一种磁保持继电器， 特别是涉及一种非对称螺线管式结构的磁保持继
背景技术
磁保持继电器是近几年发展起来的一种新型继电器， 也是一种自动开关。 和其他 电磁继电器一样， 对电路起着自动接通和切断作用。 所不同的是， 磁保持继电器是在 去掉激励量后， 仍保持激励时状态的一种双稳态继电器。
螺线管式磁路结构的电磁继电器是继电器中的一种， 现有技术的螺线管式磁路结 构的电磁继电器如图 1所示， 其包括磁路部分、 接触部分、 推动部分和壳体 100; 磁 路部分、 接触部分和推动部分分别装在壳体 100内； 该接触部分包括动簧部分和静簧 部分，动簧部分由动簧片 101和动触点 102构成，静簧部分由静簧片 103和静触点 104 构成， 且动触点 102和静触点 104设置在相适配的位置处， 以便在继电器动作时， 动 簧部分的动触点 102与静簧部分的静触点 104能够相接触；该磁路部分包括导磁部件、 线圈架 （图中未示出） 和线圈 105， 导磁部件则包括 U型轭铁 106、 轭铁板 107和静 铁芯 108， 静铁芯 108装在线圈架中， U型轭铁 106和轭铁板 107连接成一框形， 并 使静铁芯 108和和线圈 105容纳在其中； 该推动部分包括动铁芯 109、 推动杆 1 10和 固定架 1 1 1， 动簧部分安装在固定架 1 1 1上， 并有压簧 1 12相配合， 以保证继电器动 作时的超行程； 动铁芯 109 设置在 U型轭铁 106和轭铁板 107所连接成的框形内， 并与静铁芯 108相配合， 推动杆 1 10的一端与动铁芯 109相固定， 推动杆 1 10的另一 端与固定架 1 1 1相连接。 这种继电器的动作和释放都是通过线圈 105产生的吸力来保 证， 线圈 105通正负脉冲电压， 驱动动铁芯 109运动， 通过推动杆 1 10带动动簧部分 与静簧部分闭合和断开， 从而实现自动开关的功能； 比如， 当继电器动作时， 线圈 105 产生一个较大的吸力使动铁芯 109能够在轴向方向动作， 从而带动推动部分使继电器 能够闭合， 当线圈 105电压降低时， 线圈 105产生的吸力保证继电器触点保持在闭合 状态。 这种螺线管式磁路结构的继电器， 在闭合断开方向产生的反力是非平衡的， 一 般为闭合反力大于断开的反力， 这就导致继电器的动作电压和复归电压不平衡。 发明内容
本发明的目的在于克服现有技术之不足， 提供一种非对称螺线管式结构的磁保持 继电器， 通过在螺线管式磁路结构的继电器中引入偏置的磁钢， 使继电器成为磁保持 继电器， 既能发挥磁保持继电器的线圈发热少的优势， 同时又能平衡螺线管式磁路的 动作复归电压， 从而达到提升产品性能和工作可靠性的目的。
本发明解决其技术问题所采用的技术方案是： 一种非对称螺线管式结构的磁保持 继电器， 包括磁路部分、 接触部分、 推动部分； 推动部分配合在磁路部分与接触部分 之间； 所述推动部分包括动铁芯； 所述磁路部分包括导磁部件、 线圈架和线圈； 所述 动铁芯设在与导磁部件相配合的位置并且在线圈激励时能够沿线圈的轴线方向活动； 还包括两块磁钢， 所述两块磁钢分别设在线圈轴线的两侧并分别与导磁部件的对应侧 部相靠近或相接触， 且两块磁钢在线圈的轴线方向上处于动铁芯的活动范围内并偏向 触点闭合时动铁芯移动方向一侧； 使动铁芯在触点闭合和断开状态下， 动铁芯的保持 力基本相等。
所述导磁部件包括轭铁部件和安装在线圈架中的第一静铁芯； 所述动铁芯设在与 第一静铁芯相配合的位置； 所述两块磁钢分别设在线圈轴线的两侧并分别与轭铁部件 的对应侧部相靠近或相接触。
所述导磁部件还包括第二静铁芯， 第二静铁芯设置在线圈的轴线上并且处于触点 闭合时动铁芯移动方向的一侧； 所述动铁芯处于第一静铁芯与第二静铁芯之间； 所述 两块磁钢在线圈的轴线方向上更加靠近所述第二静铁芯。
所述第一静铁芯的长度尺寸大于第二静铁芯的长度尺寸。
所述第二静铁芯的截面范围大于动铁芯的截面范围。
所述轭铁部件呈框形， 所述线圈架、 线圈、 磁钢、 第一静铁芯和第二静铁芯分别 容纳在轭铁部件的框形中。
所述线圈架的上端的两侧分别设置有磁钢卡槽， 所述两块磁钢分别固定在线圈架 的磁钢卡槽中。
所述线圈架的磁钢卡槽和线圈的引出端设置在所述线圈架的同一端。
所述推动部分还包括推动杆和固定架， 所述动簧部分安装在固定架上， 所述推动 杆的一端穿过轭铁部件和第二静铁芯与所述动铁芯相固定， 所述推动杆的另一端与固 定架相连接。
所述固定架上设置有固定动簧片和压簧的凸台， 通过压簧的预压力固定动簧片， 并使动簧片在线圈轴线方向能够位移而产生超行程。
所述轭铁部件由 U型轭铁和轭铁板构成， 轭铁板连接在 U型轭铁的上端以形成 框形。
本发明的一种非对称螺线管式结构的磁保持继电器， 是在螺线管式磁路结构的继 电器中引入非对称的磁钢， 使继电器成为磁保持继电器。 通过磁钢的错位放置， 从而 在动作和断开方向产生非平衡的磁力， 由于磁钢在线圈的轴线方向上处于动铁芯的活 动范围内并偏向触点闭合时动铁芯移动方向一侧，也就是更加靠近第二静铁芯，这样， 就使得磁钢在闭合位置产生的磁力大于断开位置产生的磁力， 而螺线管式磁路结构所 形成的非平衡的反力， 也是在闭合状态下的反力大于断开位置产生的反力， 由于保持 力 F磁力 -F反力， 这就保证了在动作和复归过程保持力保持平衡。
本发明的有益效果是， 由于采用了在螺线管式磁路结构的继电器中引入非对称的 磁钢， 即还包括两块磁钢， 且所述两块磁钢分别设在线圈轴线的两侧并分别与轭铁部 件的对应侧部相靠近或相接触， 且两块磁钢在线圈的轴线方向上处于动铁芯的活动范 围内并偏向触点闭合时动铁芯移动方向一侧； 使动铁芯在触点闭合和断开状态下， 动 铁芯的保持力基本相等。 与现有技术相比较， 可以带来如下的有益效果：
1、 动铁芯和 U型轭铁间的两件磁钢， 可以在去掉线圈脉冲电压后， 动簧片在磁 钢磁力作用下， 保持触点闭合或断开， 不耗能， 产品绿色环保。
2、 磁钢偏置所形成的非对称的磁路结构设计， 可以在触点闭合状态和断开状态 下产生不同的磁力， 与触点闭合和断开状态的反力叠加后， 动铁芯保持力在两个状态 的保持力平衡， 从而使磁保持继电器的动作和复归电压平衡， 提升产品性能和工作可 靠性。
以下结合附图及实施例对本发明作进一步详细说明； 但本发明的一种非对称螺线 管式结构的磁保持继电器不局限于实施例。 附图说明
图 1是现有技术的螺线管式磁路结构的电磁继电器的结构示意图；
图 2是本发明实施例的非对称螺线管式结构的磁保持继电器结构示意图； 图 3是本发明实施例的非对称螺线管式结构的磁保持继电器的磁钢的磁回路示意 图；
图 4是本发明实施例的非对称螺线管式结构的磁保持继电器 （触点闭合状态） 的 磁力、 线圈吸力和反力的状态示意图；
图 5是本发明实施例的非对称螺线管式结构的磁保持继电器 （触点断开状态） 的 磁力、 线圈吸力和反力的状态示意图；
图 6是本发明实施例的非对称螺线管式结构的磁保持继电器的触点断开状态的示 意图；
图 7是本发明实施例的非对称螺线管式结构的磁保持继电器的触点闭合过程的示 意图；
图 8是本发明实施例的非对称螺线管式结构的磁保持继电器的触点闭合状态的示 意图；
图 9是本发明实施例的非对称螺线管式结构的磁保持继电器的触点断开过程的示 意图。 具体实施方式
实施例，
参见图 2至图 9所示， 本发明的一种非对称螺线管式结构的磁保持继电器， 包括 磁路部分、 接触部分、 推动部分和壳体 10; 磁路部分、 接触部分和推动部分分别装在 壳体 10 内， 且推动部分配合在磁路部分与接触部分之间； 所述推动部分包括动铁芯 21； 所述磁路部分包括导磁部件、 线圈架 （图中未示出） 和线圈 31 ; 该接触部分包括 动簧部分和静簧部分， 动簧部分由动簧片 41 1和动触点 412构成， 静簧部分由静簧片 421和静触点 422构成， 且动触点 412和静触点 422设置在相适配的位置处， 以便在 继电器动作时， 动簧部分的动触点 412与静簧部分的静触点 422能够相接触； 所述导 磁部件包括呈框形的轭铁部件 51和安装在线圈架中的第一静铁芯 52; 所述导磁部件 还包括第二静铁芯 53， 磁保持继电器还包括两块磁钢 54， 所述第二静铁芯 53设置在 相对于第一静铁芯 52更加靠近接触部分的轭铁部件中，且第二静铁芯 53处于线圈 31 的轴线上； 所述两块磁钢 54分别设在线圈轴线的两侧， 一块磁钢 54与轭铁部件的一 侧部相靠近或相接触， 另一块磁钢 54 与轭铁部件的另一侧部相靠近或相接触， 且两 块磁钢 54在线圈 31 的轴线方向上处于动铁芯 21 的活动范围内并偏向触点闭合时动 铁芯 21移动方向一侧； 即两块磁钢 54在线圈的轴线方向上， 就第一静铁芯 52与第 二静铁芯 53两者相比， 更加靠近所述第二静铁芯 53 以形成偏置， 使动铁芯 21在触 点闭合和断开状态下， 动铁芯 21的保持力基本相等。 所述第一静铁芯 52的长度尺寸大于第二静铁芯 53的长度尺寸， 这里所说的长度 尺寸， 是指在线圈 31的轴线方向上的长度尺寸。
所述第二静铁芯 53的截面范围 （也即截面面积） 大于动铁芯 21的截面范围。 所述线圈架的上端的两侧分别设置有磁钢卡槽， 所述两块磁钢 54 分别固定在线 圈架的所述磁钢卡槽中。
所述线圈架的磁钢卡槽和线圈的引出端设置在所述线圈架的同一端。
所述推动部分还包括推动杆 22和固定架 23， 所述动簧部分安装在固定架 23上， 所述推动杆 22的一端穿过轭铁部件和第二静铁芯 53与所述动铁芯 21相固定， 所述 推动杆 22的另一端与固定架 23相连接。
所述固定架 23上设置有固定动簧片 41 1和压簧 24的凸台， 通过压簧 24的预压 力固定动簧片 41 1， 并使动簧片 41 1在线圈 31轴线方向能够位移而产生超行程。
所述轭铁部件 51由 U型轭铁 51 1和轭铁板 512构成， 轭铁板 512连接在 U型轭 铁 51 1的上端以形成框形。
本发明实施例的非对称螺线管式结构的磁保持继电器， 特征在于磁钢 54在线圈 31的轴线方向上更加靠近第二静铁芯 53， 第一静铁芯 52的长度大于甚至是远大于第 二静铁芯 53 的长度， 这就使整个磁路结构的磁回路成非对称； 如图 3所示， 上磁回 路 A1 相对较短， 下磁回路 A2相对较长， 按照磁路理论， 磁路越长磁损越大， 产生 的吸力越小。 所以， 磁钢 54在动铁芯 21与第二静铁芯 53接触位置的磁力大小要大 于在动铁芯 21与第一静铁芯 52接触位置的磁力大小（在相对磁极面积相同条件下）。
如图 3所示的结构中， 一般动铁芯 21要上下动作， 都是连带着推动杆 22上下滑 动， 而推动杆 22的上端要与固定架 23相连接， 这样， 推动杆 22装配时就需要在动 铁芯 21和第二静铁芯 53中间穿孔， 这就减小了动铁芯上表面的相对磁极面积， 也就 是第二静铁芯 53和动铁芯 21的相对磁极面积小于第一静铁芯 52和动铁芯 21的相对 磁极面积， 根据吸力公式 F=K* 4) *s， 吸力与相对磁极面积成正比。 这就会导致这个 结构在闭合和断开位置时， 同一个线圈 31 产生的吸力大小会不一样。 本发明是通过 将第一静铁芯 52的长度尺寸设计成大于第二静铁芯 53的长度尺寸去平衡相对磁极面 积的不平衡。
另外， 本发明还将动铁芯 21设计的比现有技术的动铁芯更小， 使动铁芯 21 自身 的重量变小， 这样， 可以相对地减小磁钢 54的大小， 保证在触点闭合时， 磁钢 54有 足够的磁力将动铁芯 21维持在与第二静铁芯 53相接触的位置。 本发明实施例的非对称螺线管式结构的磁保持继电器， 是在螺线管式磁路结构的 继电器中引入非对称的磁钢 54， 使继电器成为磁保持继电器。 如图 4、 图 5所示， 通 过磁钢 54 的错位放置， 从而在继电器的动作和断开方向产生非平衡的磁力， 由于磁 钢 54在线圈 31的轴线方向上更加靠近第二静铁芯 53， 这样，一般为在闭合位置产生 的磁力 F磁力 1大于断开位置产生的磁力 F磁力 2， 而上述的非平衡的反力， 也是在 闭合状态下的反力 F反力 1大于断开位置产生的反力 F反力 2， 而保持力 F磁力 -F 反力， 这就保证了在动作和复归过程保持力保持平衡。
以下结合图 6至图 9来进一步说明本发明实施例的非对称螺线管式结构的磁保持 继电器， 在断开状态 （如图 6所示） ， 受磁钢的磁力作用， 动铁芯 21与第一静铁芯 52相接触； 在闭合过程 （如图 7所示） ， 继电器的线圈 31施加一个电压， 产生向上 的线圈吸力， 该向上的线圈吸力大于的磁钢向下磁力， 动铁芯 21 向上运动， 磁钢向 下磁力随着气隙的变大而逐渐变小， 当动铁芯 21运动至气隙中间值附近时， 磁钢 54 向上的磁力大于向下的磁力， 直至继电器闭合； 在闭合状态 （如图 8所示） ， 两个磁 钢 54提供一个向上的磁力， 在继电器的线圈 31施加的电压撤消后， 继电器在磁钢 54 的磁力作用下能保持在闭合状态； 在断开过程 （如图 9所示） ， 当继电器线圈 31 受 到一个反向驱动电压时， 动铁芯 21在线圈 31产生的吸力 （向下） 作用下， 继电器的 动铁芯 21向下动作， 磁钢 54产生的向上的磁力随着气隙的变大而逐渐变小， 当动铁 芯 21运动至气隙中间值附近时， 磁钢 54产生的向下的磁力大于向上的磁力， 直至继 电器断开， 当驱动电压撤销后， 继电器在磁钢 54 的向下的磁力作用下保持在断开状 态 （如图 6所示） 。
上述的磁钢 54， 其作用主要是通过放置在靠近第二静铁芯 53位置， 这样在磁钢 54与轭铁板 512、 第二静铁芯 53组成的磁回路相比较于磁钢 54与 U型轭铁 51 1、 第 一静铁芯 52组成的磁回路短， 从而磁钢 54在上面的回路中产生的磁力大于下回路中 产生的磁力， 也就是在闭合状态下产生的磁力大小大于断开状态下的磁力大小。
而这样的螺线管磁路， 由于动铁芯 21与推杆 22连接， 一般上磁回路的贴合面积 相对于下磁回路较小， 而且再加上动铁芯 21 的重力， 就导致在闭合过程需要线圈产 生的吸力要大于断开过程， 当磁钢 54 如上述结构放置在偏上磁回路时， 正好产生的 磁力上大下小， 从而补偿线圈 31产生的吸力。
上述实施例仅用来进一步说明本发明的一种非对称螺线管式结构的磁保持继电 器， 但本发明并不局限于实施例， 凡是依据本发明的技术实质对以上实施例所作的任 何简单修改、 等同变化与修饰， 均落入本发明技术方案的保护范围内。

Claims

权利要求
1 . 一种非对称螺线管式结构的磁保持继电器， 包括磁路部分、 接触部分、 推动 部分； 推动部分配合在磁路部分与接触部分之间； 所述推动部分包括动铁芯； 所述磁 路部分包括导磁部件、 线圈架和线圈； 所述动铁芯设在与导磁部件相配合的位置并且 在所述线圈激励时能够沿所述线圈的轴线方向活动； 其特征在于： 还包括两块磁钢， 所述两块磁钢分别设在所述线圈轴线的两侧并分别与所述导磁部件的对应侧部相靠 近或相接触， 且两块磁钢在线圈的轴线方向上处于所述动铁芯的活动范围内并偏向触 点闭合时所述动铁芯移动方向一侧； 使所述动铁芯在触点闭合和断开状态下， 所述动 铁芯的保持力基本相等。
2. 根据权利要求 1所述的非对称螺线管式结构的磁保持继电器， 其特征在于： 所述导磁部件包括轭铁部件和安装在线圈架中的第一静铁芯； 所述动铁芯设在与第一 静铁芯相配合的位置； 所述两块磁钢分别设在线圈轴线的两侧并分别与轭铁部件的对 应侧部相靠近或相接触。
3 . 根据权利要求 2所述的非对称螺线管式结构的磁保持继电器， 其特征在于： 所述导磁部件还包括第二静铁芯， 所述第二静铁芯设置在线圈的轴线上并且处于触点 闭合时动铁芯移动方向的一侧； 所述动铁芯处于第一静铁芯与第二静铁芯之间； 所述 两块磁钢在线圈的轴线方向上， 在所述第一静铁芯与所述第二静铁芯中， 更加靠近所 述第二静铁芯。
4. 根据权利要求 3所述的非对称螺线管式结构的磁保持继电器， 其特征在于： 所述第一静铁芯的长度尺寸大于第二静铁芯的长度尺寸。
5 . 根据权利要求 3所述的非对称螺线管式结构的磁保持继电器， 其特征在于： 所述第二静铁芯的截面范围大于所述动铁芯的截面范围。
6. 根据权利要求 3所述的非对称螺线管式结构的磁保持继电器， 其特征在于： 所述轭铁部件呈框形， 所述线圈架、 线圈、 磁钢、 第一静铁芯和第二静铁芯分别容纳 在框形的所述轭铁部件中。
7. 根据权利要求 1所述的非对称螺线管式结构的磁保持继电器， 其特征在于： 所述线圈架的上端的两侧分别设置有磁钢卡槽， 所述两块磁钢分别固定在所述磁钢卡 槽中。
8. 根据权利要求 7所述的非对称螺线管式结构的磁保持继电器， 其特征在于： 所述线圈架的磁钢卡槽和线圈的引出端设置在所述线圈架的同一端。
9. 根据权利要求 3所述的非对称螺线管式结构的磁保持继电器， 其特征在于： 所述推动部分还包括推动杆和固定架， 所述动簧部分安装在固定架上， 所述推动杆的 一端穿过轭铁部件和第二静铁芯与所述动铁芯相固定， 所述推动杆的另一端与固定架 相连接。
10. 根据权利要求 9所述的非对称螺线管式结构的磁保持继电器， 其特征在于： 所述 固定架上设置有固定动簧片和压簧的凸台， 通过压簧的预压力固定动簧片， 并使动簧片在 线圈轴线方向能够位移而产生超行程。
PCT/CN2014/071724 2013-03-29 2014-01-29 一种非对称螺线管式结构的磁保持继电器 WO2014154056A2 (zh)

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JP2016504461A JP6259068B2 (ja) 2013-03-29 2014-01-29 非対称ソレノイド式構造のラッチングリレー

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EP2980826A2 (en) 2016-02-03
WO2014154056A3 (zh) 2014-11-13
EP2980826A4 (en) 2016-11-30
CN103236376A (zh) 2013-08-07
US20160035502A1 (en) 2016-02-04
KR20150131125A (ko) 2015-11-24
KR101770630B1 (ko) 2017-09-05
JP2016512922A (ja) 2016-05-09

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