WO2018040872A1 - 电磁继电器 - Google Patents

电磁继电器 Download PDF

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Publication number
WO2018040872A1
WO2018040872A1 PCT/CN2017/096675 CN2017096675W WO2018040872A1 WO 2018040872 A1 WO2018040872 A1 WO 2018040872A1 CN 2017096675 W CN2017096675 W CN 2017096675W WO 2018040872 A1 WO2018040872 A1 WO 2018040872A1
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WO
WIPO (PCT)
Prior art keywords
yoke
moving spring
plastic
coil
hole
Prior art date
Application number
PCT/CN2017/096675
Other languages
English (en)
French (fr)
Inventor
林佳宾
郭齐岳
汪志坤
Original Assignee
厦门宏发信号电子有限公司
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 厦门宏发信号电子有限公司 filed Critical 厦门宏发信号电子有限公司
Priority to US16/321,986 priority Critical patent/US11075044B2/en
Priority to JP2019529310A priority patent/JP6823721B2/ja
Priority to DE112017004306.9T priority patent/DE112017004306T5/de
Publication of WO2018040872A1 publication Critical patent/WO2018040872A1/zh

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/02Bases; Casings; Covers
    • H01H50/04Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041Details concerning assembly of relays
    • H01H50/042Different parts are assembled by insertion without extra mounting facilities like screws, in an isolated mounting part, e.g. stack mounting on a coil-support
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/16Magnetic circuit arrangements
    • H01H50/36Stationary parts of magnetic circuit, e.g. yoke
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00Apparatus or processes specially adapted for the manufacture of electric switches
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/02Bases; Casings; Covers
    • H01H50/023Details concerning sealing, e.g. sealing casing with resin
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/16Magnetic circuit arrangements
    • H01H50/18Movable parts of magnetic circuits, e.g. armature
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/44Magnetic coils or windings
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00Details of electromagnetic relays
    • H01H50/44Magnetic coils or windings
    • H01H2050/446Details of the insulating support of the coil, e.g. spool, bobbin, former

Definitions

  • the invention relates to the technical field of electronic components, and in particular to an electromagnetic relay.
  • the electromagnetic relay includes a moving spring 101, a yoke 102, a coil 103, and an armature 104.
  • the yoke 102 is L-shaped, the horizontal side of the yoke 102 is fixed to the bottom of the coil in the coil 103, the vertical side of the yoke 102 is parallel to the axis of the core, and the moving spring 101 and the armature 104 are mounted. Together, they form a spring-loaded armature assembly.
  • the yoke 102 is provided with a tenon 1021.
  • the moving spring 101 is provided with an opening, and the opening of the moving spring 101 is engaged with the tenon 1021 of the yoke 102.
  • the armature 104 is disposed at the edge of the yoke 102, that is, at the top end of the vertical side of the yoke 102, and the moving spring armature assembly and the yoke 102 are fixed by crimping.
  • This type of electromagnetic relay mainly has the following disadvantages: the insulation between the yoke and the coil (ie, the enameled wire) (ie, the creepage distance) is insufficient.
  • one method is to integrally coat the outer surface of the coil (ie, the enameled wire) to increase the insulation between the coil (ie, the enameled wire) and the yoke.
  • this type of treatment not only adds a process, but also risks the breakage of the enameled wire.
  • Another way is to install an insulating tape or a plastic sheet between the coil and the yoke.
  • FIG. 2 is a schematic view showing the structure of a conventional electromagnetic relay incorporated in a plastic sheet.
  • a plastic sheet 105 is inserted between the yoke 102 and the coil 103, thereby improving the coil (ie, the enameled wire) and the yoke.
  • the second is that the assembly is difficult; the insulating rubber is difficult to completely wrap the enameled wire when it is entangled, or the plastic piece is not completely fixed, and it is easy to shake during use or transportation, and it is difficult to ensure the insulation effect.
  • the consistency is the third, the assembly space needs to be reserved, which will affect the winding space of the enameled wire, which is not conducive to improving the performance of the product.
  • the object of the present invention is to overcome the deficiencies of the prior art and provide an electromagnetic relay.
  • the yoke By improving the connection structure between the yoke and the yoke and the moving spring, the yoke can be improved without affecting the winding space. The insulation properties of the coil and the assembly process are effectively reduced.
  • an electromagnetic relay including a moving spring, a yoke and a wire a coil, wherein the coil is provided with a core, wherein the yoke is L-shaped, having a horizontal side and a vertical side; the yoke is disposed outside the coil, and the horizontal side of the yoke and the iron
  • the bottom of the core is fixedly connected, and the vertical side of the yoke is parallel to the axis of the core; wherein the vertical side of the yoke is provided with a plastic layer formed by injection molding on a side facing the coil.
  • the insulating layer is provided between the yoke and the coil by using the plastic layer.
  • the vertical side of the yoke is provided with a plastic tenon formed by injection molding on a side facing away from the coil to be fixedly connected to the moving spring by the plastic tenon.
  • the vertical side of the yoke is provided with a first through hole corresponding to the position of the plastic tenon, and the first through hole is provided with a first plastic body formed by injection molding. .
  • the plastic layer, the plastic tenon and the first plastic body are placed on the plastic tenon at the plastic gate during injection molding.
  • the shape of the first through hole of the yoke is circular, square, triangular, elliptical or rectangular.
  • the vertical side of the yoke is further provided with a groove on one side facing the coil, and the plastic layer is filled in the groove.
  • the side of the plastic layer facing the coil is flush with the side of the vertical side of the yoke facing the coil.
  • the side of the plastic layer facing the coil protrudes from the side of the vertical side of the yoke facing the coil, and the thickness of the convex portion does not exceed 0.4 mm.
  • the height of the plastic layer exceeds the dimension of the vertical direction of the winding window of the bobbin of the coil.
  • the moving spring is provided with a second through hole corresponding to the position of the first through hole of the yoke, and the plastic tenon of the yoke is fitted in the second through hole of the moving spring And the moving spring is fixedly connected with the yoke.
  • the plastic tenon is formed by injection molding and protrudes from a second through hole of the moving spring, and the plastic tenon protrudes from the second through hole of the moving spring.
  • a fixing portion having a cross-sectional area larger than a second through hole of the moving spring is formed at the other end to cover the moving spring body except the second through hole of the moving spring in whole or in part by the fixing portion to achieve the A fixed connection of the moving spring to the yoke.
  • the plastic tenon is inserted and protrudes from the second through hole of the moving spring, and is heated by a plastic tenon protruding from the second through hole of the moving spring. Riveting, the portion of the plastic tenon is extended outward to form an extension portion, the extension portion covers all or part of the moving spring body other than the second through hole of the moving spring to fix the moving spring and the Yoke iron.
  • a molten structure formed by laser welding is further disposed at a contact between the moving spring and the yoke, and the moving spring and the yoke are integrally connected by the molten structure.
  • the molten structure is in a dot shape, and a plurality of dot-shaped molten structures are arranged in a straight line.
  • the molten structure is linear.
  • the invention has the beneficial effects that the invention adopts a plastic layer formed by injection molding on the side of the yoke with the vertical side of the yoke, so as to be insulated by the plastic layer.
  • a plastic tenon formed by injection molding is disposed between the yoke and the coil on one side of the coil to be fixed by the plastic spring. According to the structure of the present invention, the degree of insulation between the yoke and the coil can be improved and the positional accuracy of the insulating member can be ensured without affecting the winding space, and the assembly process can be effectively reduced.
  • FIG. 1 is a schematic structural view of a prior art electromagnetic relay
  • FIG. 2 is a schematic structural view of a prior art electromagnetic relay incorporated into a plastic sheet
  • FIG. 3 is a schematic perspective view showing the yoke of the first embodiment of the electromagnetic relay of the present invention before injection molding;
  • Figure 4 is a perspective view showing the yoke of Figure 3 as viewed from another angle;
  • Figure 5 is a perspective view showing the yoke of Figure 3 after injection molding
  • Figure 6 is a perspective view showing the yoke of Figure 5 as viewed from another angle;
  • Figure 7 is a perspective view showing the yoke and the spring loaded armature assembly shown in Figure 5;
  • Figure 8 is a perspective view showing the yoke and the moving spring armature assembly shown in Figure 7 from another angle;
  • Figure 9 is a perspective view showing the first embodiment of the electromagnetic relay of the present invention.
  • Figure 10 is a perspective view showing the electromagnetic relay shown in Figure 9 from another angle;
  • Figure 11 is a perspective view showing the yoke of the second embodiment of the electromagnetic relay of the present invention.
  • Figure 12 is a perspective view showing the yoke and the moving spring armature assembly shown in Figure 11 assembled by hot stamping;
  • Figure 13 is a perspective view showing the second embodiment of the electromagnetic relay of the present invention.
  • a first embodiment of the electromagnetic relay of the present invention includes a moving spring 1, a yoke 2, a coil 3, an armature 4, and a bobbin 5.
  • the bobbin 5 has a vertically disposed through hole, and the through hole receives an iron core 7, and the coil 3 such as an enameled wire is disposed around the iron core 7.
  • the moving spring 1 and the armature 4 are assembled together to form a moving spring armature assembly.
  • the yoke 2 is L-shaped and has a horizontal side 21 and a vertical side 22.
  • the yoke 2 is disposed outside the coil 3.
  • the horizontal side 21 of the yoke is fixedly connected to the bottom of the core 7 in the coil 3, and the yoke 2 is vertical.
  • the straight edge 22 is parallel to the axis of the core 7.
  • the vertical side 22 of the yoke 2 is provided with a plastic layer 61 formed by injection molding on the side facing the coil 3 to form an additional insulating layer between the yoke 2 and the coil 3.
  • At least one plastic tenon 62 formed by injection molding is disposed on one side of the plastic layer 61 facing away from the coil 3 to be fixedly connected to the moving spring 1 by the plastic tenon 62.
  • two plastic tenons are provided. 62.
  • the vertical side 22 of the yoke 2 is provided with a first through hole 23 corresponding to the position of the plastic tenon 62, and the first through hole 23 is provided with a first plastic body formed by injection molding (not shown) Out).
  • the first through hole 23 of the yoke 2 has a circular shape.
  • the first through hole 23 may be designed to have a square shape, a triangular shape, an elliptical shape, a rectangular shape or the like as needed.
  • a groove 24 is provided on the side facing the coil 3, and the plastic layer 61 is filled in the groove 24.
  • one side of the plastic layer 61 facing the coil 3 is flush with the side of the vertical side 22 of the yoke 2 facing the coil 3, that is to say the plastic layer 61 just fills the groove 24 and is not protruded.
  • the side of the plastic layer 61 facing the coil 3 can also be designed to protrude from the side of the vertical side 22 of the yoke 2 facing the coil 3, usually the thickness of the protruding portion does not exceed 0.4mm.
  • the reason why the thickness of the protruding portion of the plastic layer 61 is set to not more than 0.4 mm is because the 0.4 mm plastic layer can achieve the insulation effect, if the plastic layer is too thick to waste the material, and the second is to take up the winding. space.
  • the height of the plastic layer 61 is larger than the vertical direction of the winding window 51 of the bobbin 5, and the width of the plastic layer 61 may be appropriately extended to both sides to have an effect of increasing the insulation distance.
  • the width of the plastic layer 61 can be designed according to the actual insulation requirements of the product.
  • the moving spring 1 is provided with a second through hole 11 corresponding to the position of the first through hole 23 of the yoke, and the plastic tenon 62 of the plastic layer 61 is fitted in the second through hole 11 of the moving spring 1 and moved.
  • the spring 1 is fixed to the yoke 2.
  • the plastic tenon 62 is formed in the second through hole 11 of the moving spring 1 during the injection molding process, and protrudes from the end of the plastic tenon 62 outside the second through hole 11 of the moving spring 1.
  • the plastic portions on both sides of the yoke 2 can be stably positioned without moving.
  • the plastic gates during mold injection may be located on one or more plastic tenons 62 or on the plastic side facing the coil 3.
  • the plastic gate is located on the plastic tenon 62, which is advantageous for injection molding, simplifies the mold structure and improves the yield.
  • the second through hole 11 of the moving spring 1 and the first through hole 23 of the corresponding yoke 2 are not limited in size. If the injection gate is provided on the plastic tenon 62, the second through hole of the moving spring 1 is usually designed. 11 is larger than the first through hole 23 of the yoke 2. Because the second through hole 11 on the moving spring 1 is more favorable for the plastic flow, the injection molding production is reduced.
  • the moving spring 1 and the yoke 2 may be further fixed by laser welding at the contact between the moving spring 1 and the yoke 2, that is, the moving spring 1 and the yoke 2 are further in contact with each other.
  • a molten structure 12 formed by laser welding, the moving spring 1 and the yoke 2 are integrally connected by a molten structure 12.
  • the molten structure is linear.
  • the molten structure may also be in the form of dots, and a plurality of dot-like molten structures are arranged in a straight line.
  • An electromagnetic relay according to the present invention is such that a plastic layer 61 formed by injection molding is provided on a side of the vertical side 22 of the yoke 2 toward the coil 3 to be insulated from the yoke 2 by the plastic layer 61. Between the coil 3 (the enamel wire of the coil), a plastic bead 62 formed by injection molding is provided on one side of the plastic layer 61 facing away from the coil 3 to be fixed to the moving spring 1 by the plastic tongue 62.
  • the structure of the present invention can improve the insulation performance of the yoke 2 and the coil 3 and ensure the positional accuracy of the insulating member without affecting the winding space, and effectively reduce the assembly process, on the other hand,
  • the yoke 2 and the moving spring 1 are fixed, the yoke and the moving spring are fixed by the plastic tenon, the plastic layer and the first injection body, instead of the riveting or riveting fixing between the existing yoke and the moving spring, Stress on the moving spring deforms the moving spring, improving the dimensional uniformity of the moving spring.
  • An electromagnetic relay of the present invention wherein a vertical side of the yoke is further provided with a groove 24 on a side facing the coil 3, A plastic layer 61 is filled in the recess 24.
  • the structure accommodates the injection molded plastic with the recesses 24, reducing or not occupying the winding space when increasing the insulation distance.
  • the present invention employs the effect of designing the height of the plastic layer 61 to exceed the vertical direction of the winding window of the bobbin of the coil, which can have an effect of increasing the insulation distance.
  • An electromagnetic relay of the present invention adopts a first through hole 23 corresponding to the position of the plastic tenon 62 on the vertical side 22 of the yoke 2, and the first through hole 23 is filled with an injection molding method.
  • the first plastic body is integrally connected between the plastic layer 61 and the plastic tenon 62.
  • the structure allows the plastic to be attached to the yoke 2 by insert molding, and does not need to be assembled, thereby reducing the additional positional dispersion caused by the assembly and improving the consistency of the insulation distance.
  • the invention adopts the plastic beak 62 formed in the second through hole 11 of the moving spring by injection molding, and the sectional area of the plastic tenon protruding outside the second through hole of the moving spring is larger than that of the moving spring 1 The second through hole 11.
  • the tenon 62 of the present invention is formed by melt injection molding. After cooling, the moving spring 1 is pressed against the back surface of the yoke 2 to form a reliable fixing. Since the plastic is in a molten state, it is matched with the moving spring through hole, and the matching area is small, so the cooling is performed. During the process, no additional stress is applied to the moving spring, and it is difficult to cause stress deformation of the moving spring, which improves the consistency of the moving spring.
  • the moving spring 1 and the yoke 2 are integrally connected by laser welding at the contact of the moving spring 1 and the yoke 2.
  • the structure can further improve the positioning of the moving spring and improve the heat dissipation effect of the moving spring.
  • the laser welding can cause partial metal melting of the moving spring 1 and the laser irradiation of the yoke 2, and the two are integrally formed by metal melting, and the heat on the moving spring 1 can be quickly dissipated through the yoke 2 through the welded joint.
  • a second embodiment of an electromagnetic relay of the present invention differs from the first embodiment in that the manner in which the moving spring is fixedly coupled to the yoke is different.
  • the movable spring 1 is fixed to the yoke 2 by inserting the plastic tongue 62 formed on the yoke into the second through hole 11 of the moving spring 1, and at this time, the second of the moving spring 1
  • the through hole 11 serves as a positioning function because the through hole can form a clearance fit with the tenon 62 formed by the first through hole 23 on the yoke, and then pass through the second through hole 11 which protrudes out of the moving spring 1
  • the plastic embossing is subjected to a hot staking treatment, so that the portion of the plastic tenon deforms outwardly to form an extending portion 621, and the extending portion 621 covers all or part of the moving spring body other than the second through hole 11 of the moving spring 1 to realize the moving spring 1 A fixed connection to the yoke 2
  • the plastic tenon 62 formed on the yoke 2 is inserted into the second through hole 11 of the moving spring, and is protruded outside the second through hole 11 of the moving spring 1.
  • the plastic tenon is subjected to a hot stamping process to form an extension portion 621 for achieving a fixed connection between the yoke 2 and the moving spring 1.
  • the hot stamping described in the present invention melts and solidifies the plastic tenon 62 by high temperature, and then cools and solidifies. The melted plastic does not stress the moving spring 1, and the plastic crown 62 and the moving spring 1 have a small matching area. Therefore, the moving spring 1 is not deformed, and the dimensional uniformity of the moving spring 1 is improved.
  • the present invention adopts a plastic layer formed by injection molding on the side facing the coil of the yoke, so that the plastic layer is insulated between the yoke and the coil, and the coil is turned away from the coil.
  • One side is provided with a plastic tenon formed by injection molding to fix the plastic crown with the moving spring.
  • the structure of the present invention can improve the insulation degree of the yoke and the coil and ensure the positional accuracy of the insulating member without affecting the winding space, and effectively reduce the assembly process.
  • the yoke and the yoke are When the moving spring is fixed, the yoke and the moving spring are fixed by the plastic tenon, the plastic layer and the first injection body, instead of the riveting or the riveting fixing between the existing yoke and the moving spring, the moving spring is not generated. The stress deforms the moving spring and improves the dimensional uniformity of the moving spring.
  • a groove is provided on the side facing the coil, and the plastic layer is filled in the groove.
  • the structure accommodates the injection molded plastic with a recess that reduces or does not take up winding space when increasing the insulation distance.
  • the present invention has the effect of increasing the insulation distance by designing the height dimension of the plastic layer to exceed the vertical dimension of the winding window of the bobbin of the coil.
  • the present invention adopts a first through hole corresponding to the position of the plastic tenon on the vertical side of the yoke, and the first through hole is filled with the first plastic body formed by injection molding, the first plastic The body is integrally connected between the plastic layer and the plastic tenon.
  • the structure allows the plastic to be attached to the yoke by insert molding without the need for assembly, thereby reducing the additional positional dispersion caused by the assembly and improving the consistency of the insulation distance.
  • the invention adopts the method that the plastic tenon is formed in the second through hole of the moving spring by injection molding, and the sectional area of the plastic tenon protruding outside the second through hole of the moving spring is larger than that of the moving spring. Second through hole.
  • the tenon of the invention is formed by melt injection molding, and after cooling, the moving spring is pressed against the back surface of the yoke to form a reliable fixing. Since the plastic is in a molten state, it is matched with the moving spring through hole, and the matching area is small, so the cooling process is not It will bring extra stress to the moving spring, which will not easily cause stress deformation of the moving spring, and can improve the consistency of the moving spring.
  • the present invention adopts a method in which a plastic tenon formed on a yoke is inserted into a second through hole of a moving spring, and a plastic bead protruding from a second through hole of the moving spring is subjected to a hot stamping process.
  • the part of the plastic tenon is deformed.
  • the hot rivet of the invention is fixed by the high temperature so that the plastic ram melts and flows in place and then solidifies and solidifies.
  • the melted plastic does not stress the moving spring, and the matching area of the plastic ridge and the moving spring is small, so Dynamic spring deformation improves the dimensional consistency of the moving spring.
  • the moving spring and the yoke are integrally connected by laser welding in the contact between the moving spring and the yoke.
  • the structure can further improve the positioning of the moving spring and improve the heat dissipation effect of the moving spring.
  • the plastic gate, the plastic dome and the first plastic body can be located in the plastic layer toward the coil during the injection molding. On the surface or on the plastic tenon, it is preferably placed on the plastic tenon. This structure is advantageous for injection molding, simplifies the mold structure and improves the yield.
  • the invention adopts a plastic layer formed by injection molding on the side of the yoke with the vertical side of the yoke, so as to be insulated between the yoke and the coil by the plastic layer, and disposed on the side facing away from the coil.
  • the structure of the present invention can improve the insulation degree of the yoke and the coil and ensure the positional accuracy of the insulating member without affecting the winding space, and effectively reduce the assembly process.
  • the yoke and the yoke are When the moving spring is fixed, the yoke and the moving spring are fixed by the plastic tenon, the plastic layer and the first injection body, instead of the riveting or the riveting fixing between the existing yoke and the moving spring, the moving spring is not generated. The stress deforms the moving spring and improves the dimensional uniformity of the moving spring.

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

一种电磁继电器,包括动簧(1)、轭铁(2)和线圈(3),线圈(3)内设有铁芯(7),其中,轭铁(2)为L型,具有水平边和竖直边;轭铁(2)设置于线圈(3)的外面,且轭铁(2)的水平边与铁芯(7)的底部固定连接,轭铁(2)的竖直边与铁芯(7)的轴线平行;轭铁(2)的竖直边在朝向线圈(3)的一面设有采用注塑成型方式形成的塑料层(61),以利用该塑料层(61)绝缘设在轭铁(2)与线圈(3)之间。该方案能够在不影响绕线空间的前提下,提高轭铁(2)与线圈(3)的绝缘程度以及保证绝缘部件的位置精度,并有效减少了装配工序,另一方面,在轭铁(2)与动簧(1)固定时,不会对动簧(1)产生应力使动簧(1)变形,改善了动簧(1)的尺寸一致性。

Description

电磁继电器 技术领域
本发明涉及电子元器件技术领域,特别是涉及一种电磁继电器。
背景技术
图1为现有的一种电磁继电器的构造示意图,也是继电器行业广泛使用的经典结构,这种电磁继电器包括动簧101、轭铁102、线圈103和衔铁104。其中,轭铁102为L型,轭铁102的水平边与线圈103中的铁芯在线圈的底部相固定,轭铁102的竖直边与铁芯的轴线平行,动簧101和衔铁104装在一起组成动簧衔铁组件。轭铁102上设有凸苞1021,动簧101设有开孔,动簧101开孔与轭铁102的凸苞1021配合。衔铁104设置在轭铁102的刀口处即轭铁102的竖直边的顶端,动簧衔铁组件与轭铁102采用压铆方式固定。这种电磁继电器主要存在以下弊端:轭铁与线圈(即漆包线)之间的绝缘(即爬电距离)不够。
为了解决上述问题,现有技术所采用的方式主要有两种:一种方式是在线圈(即漆包线)外表面整体包覆胶带,用以增加线圈(即漆包线)与轭铁之间的绝缘性能。但是,这种处理方式,不但会增加一道工序,而且存在导致漆包线断线的风险。另一种方式是在线圈与轭铁之间装入绝缘胶带或者塑料片。
图2为现有的一种电磁继电器装入塑料片的构造示意图,如图2所示,是在轭铁102与线圈103之间装入塑料片105,从而提高线圈(即漆包线)与轭铁之间的绝缘性能。但是,这种方式,一是增加了一道工序;二是装配难度大;绝缘胶在缠绕的时候难以完全包裹漆包线,或塑料片没有完全固定,在使用或运输过程中容易晃动,难以保证绝缘效果的一致性,三是需预留装配空间,这会影响漆包线的绕线空间,不利于提升产品的性能。
在所述背景技术部分公开的上述信息仅用于加强对本公开的背景的理解,因此它可以包括不构成对本领域普通技术人员已知的现有技术的信息。
发明内容
本发明的目的在于克服现有技术的不足,提供一种电磁继电器,通过对轭铁以及轭铁与动簧之间连接结构的改进,能够在不影响绕线空间的前提下,提高轭铁与线圈的绝缘性能,并有效减少了装配工序。
本发明解决其技术问题所采用的技术方案是:一种电磁继电器,包括动簧、轭铁和线 圈,所述线圈内设有铁芯其中,轭铁为L型,具有水平边和竖直边;所述轭铁设置于所述线圈的外面,且所述轭铁的水平边与所述铁芯的底部固定连接,所述轭铁的竖直边与所述铁芯的轴线平行;其中所述轭铁的竖直边在朝向所述线圈的一面设有采用注塑成型方式形成的塑料层,以利用该塑料层绝缘设在轭铁与线圈之间。
根据本发明的一实施方式,所述轭铁的竖直边在背向所述线圈的一面设有采用注塑成型方式形成的塑料凸苞,以利用该塑料凸苞与所述动簧固定连接。
根据本发明的一实施方式,所述轭铁的竖直边设有与塑料凸苞位置相对应的第一透孔,所述第一透孔中设有采用注塑成型方式形成的第一塑料体。
根据本发明的一实施方式,塑料层、塑料凸苞和第一塑料体在注塑成型时的塑料浇口位于塑料凸苞上。
根据本发明的一实施方式,所述轭铁的第一透孔的形状为圆形、方形、三角形、椭圆形或矩形。
根据本发明的一实施方式,所述轭铁的竖直边在朝向所述线圈的一面还设有凹槽,所述塑料层填充在所述凹槽中。
根据本发明的一实施方式,所述塑料层的朝向线圈的一面与轭铁的竖直边的朝向线圈的一面平齐。
根据本发明的一实施方式,所述塑料层的朝向线圈的一面凸出于轭铁的竖直边的朝向线圈的一面,且凸出的部分厚度不超过0.4mm。
根据本发明的一实施方式,所述塑料层的高度超过线圈的线圈架的绕线窗口的竖直方向的尺寸。
根据本发明的一实施方式,所述动簧设有与轭铁的第一透孔的位置相对应的第二透孔,所述轭铁的塑料凸苞配合在动簧的第二透孔中并使动簧与轭铁固定连接。
根据本发明的一实施方式,所述塑料凸苞采用注塑成型方式形成并凸出于所述动簧的第二透孔,所述塑料凸苞在凸出于所述动簧的第二透孔以外的末端形成截面积大于所述动簧的第二透孔的固定部,以利用所述固定部全部或部分盖住所述动簧的第二透孔以外的动簧本体,以实现所述动簧与所述轭铁的固定连接。
根据本发明的一实施方式,所述塑料凸苞插设并凸出于所述动簧的第二透孔,通过对凸出于所述动簧的第二透孔外的塑料凸苞进行烫铆处理,使该部分塑料凸苞形变向外延伸形成延伸部,所述延伸部全部或部分盖住所述动簧的第二透孔以外的动簧本体,以固定所述动簧与所述轭铁。
根据本发明的一实施方式,在所述动簧与所述轭铁的相接触处还设有采用激光焊接形成的熔融结构,所述动簧和所述轭铁通过所述熔融结构连接成一体。
根据本发明的一实施方式,所述熔融结构为点状,多个点状的熔融结构排成一条直线。
根据本发明的一实施方式,所述熔融结构为直线状。
与现有技术相比较,本发明的有益效果是:本发明由于采用了将轭铁的竖直边在朝向线圈的一面设有采用注塑成型方式形成的塑料层,以利用该塑料层绝缘设在轭铁与线圈之间,在背向线圈的一面设有采用注塑成型方式形成的塑料凸苞,以利用该塑料凸苞与动簧相固定。本发明的该结构,能够在不影响绕线空间的前提下,提高轭铁与线圈的绝缘程度以及保证绝缘部件的位置精度,并有效减少了装配工序。
以下结合附图及实施方式对本发明作进一步详细说明;但本发明的一种电磁继电器不局限于实施方式。
附图说明
图1是现有技术的电磁继电器的构造示意图;
图2是现有技术的电磁继电器装入塑料片的构造示意图;
图3是本发明电磁继电器第一实施方式中的轭铁在注塑前的立体结构示意图;
图4是图3所示的轭铁从另一角度观察的立体结构示意图;
图5是图3所示的轭铁在注塑后的立体结构示意图;
图6是图5所示的轭铁从另一角度观察的立体结构示意图;
图7是图5所示的轭铁与动簧衔铁组件注塑在一起的立体结构示意图;
图8是图7所示的轭铁与动簧衔铁组件从另一个角度观察的立体结构示意图;
图9是本发明电磁继电器第一实施方式立体结构示意图;
图10是图9所示的电磁继电器从另一个角度观察的立体结构示意图;
图11是本发明电磁继电器第二实施方式中的轭铁的立体结构示意图;
图12是图11所示的轭铁与动簧衔铁组件采用烫铆装配在一起的立体结构示意图;
图13是本发明电磁继电器第二实施方式立体结构示意图。
其中:1、动簧;11、第二透孔;12、熔融结构;2、轭铁;21、水平边;22、竖直边;23、第一透孔;24、凹槽;3、线圈;4、衔铁;5、线圈架;61、塑料层;62、塑料凸苞;620、固定部;621延伸部;7、铁芯。
具体实施方式
现在将参考附图更全面地描述示例实施方式。然而,示例实施方式能够以多种形式实施,且不应被理解为限于在此阐述的实施方式;相反,提供这些实施方式使得本公开将全面和完整,并将示例实施方式的构思全面地传达给本领域的技术人员。图中相同的附图标记表示相同或类似的结构,因而将省略它们的详细描述。
实施方式一
参见图3至图10所示,本发明的电磁继电器第一实施方式,包括动簧1、轭铁2、线圈3、衔铁4以及线圈架5。其中,线圈架5具有一竖直设置的通孔,通孔内容纳一铁芯7,线圈3例如漆包线围绕铁芯7设置。动簧1和衔铁4装在一起组成动簧衔铁组件。轭铁2为L型,具有水平边21和竖直边22,轭铁2设置于线圈3外面,轭铁的水平边21与线圈3中的铁芯7的底部固定连接,轭铁2的竖直边22与铁芯7的轴线平行。轭铁2的竖直边22在朝向线圈3的一面设有采用注塑成型方式形成的塑料层61,以在轭铁2与线圈3之间形成额外的绝缘层。在塑料层61的背向线圈3的一面设有采用注塑成型方式形成的至少一个塑料凸苞62,以利用该塑料凸苞62与动簧1固定连接,本实施方式设有两个塑料凸苞62。
轭铁2的竖直边22设有与塑料凸苞62位置相对应的第一透孔23,所述第一透孔23内设有采用注塑成型方式形成的第一塑料体(图中未示出)。
本实施方式中,轭铁2的第一透孔23的形状为圆形,当然,根据需要第一透孔23也可以设计成方形、三角形、椭圆形、矩形或其他形状。
轭铁2的竖直边22中,在朝向线圈3的一面还设有凹槽24,所述塑料层61填充在所述凹槽24中。
本实施方式中,塑料层61的朝向线圈3的一面与轭铁2的竖直边22的朝向线圈3的一面相平齐,也就是说塑料层61刚好填平凹槽24,没有凸出于轭铁2的竖直边22的朝向线圈3的一面的平面。
当然,在产品空间足够的情况下,也可以将塑料层61的朝向线圈3的一面设计成凸出于轭铁2的竖直边22的朝向线圈3的一面,通常凸出部分的厚度不超过0.4mm。本发明之所以将塑料层61的凸出部分的厚度设定成不超过0.4mm,是因为0.4mm塑料层就已能够实现绝缘效果,如果塑料层太厚一来浪费材料,二来占用绕线空间。此时,也可以是不要凹槽24,直接在轭铁2的竖直边22的朝向线圈的一面上注塑成型塑料层61。
塑料层61的高度要超过线圈架5的绕线窗口51的竖直方向的尺寸,塑料层61的宽度可以向两侧适当延伸,以起到增大绝缘距离的效果。塑料层61的宽度可根据产品实际的绝缘要求进行设计。
动簧1设有与轭铁的第一透孔23的位置相对应的第二透孔11,所述塑料层61的塑料凸苞62配合在动簧1的第二透孔11中并使动簧1与轭铁2相固定。
本实施方式中,在注塑成型过程中将塑料凸苞62形成在动簧1的第二透孔11中,并使凸出在动簧1的第二透孔11外的塑料凸苞62的末端形成截面积大于动簧1的第二透孔11的固定部620,以利用固定部620全部或部分盖住动簧1的第二透孔11以外的动簧本体,从而实现动簧1与轭铁2的固定连接。这样,可以使轭铁2两侧的塑料部分位置稳固不会移动。
模具注塑时的塑料浇口可位于一个或多个塑料凸苞62上,也可位于朝向线圈3的塑料面。在本实施方式中,塑料浇口位于塑料凸苞62上,有利于注塑成型,简化模具结构且提高良率。
动簧1的第二透孔11与对应的轭铁2的第一透孔23大小可不做限制,若注塑浇口设于塑料凸苞62上时,通常设计成动簧1的第二透孔11大于轭铁2的第一透孔23。因为动簧1上第二透孔11更大有利于塑料流动,减少注塑生产难度。
进一步的,还可以在动簧1与轭铁2的相接触处采用激光焊接方式使动簧1与轭铁2进一步固定,即,在动簧1与轭铁2的相接触处还设有采用激光焊接形成的熔融结构12,所述动簧1和所述轭铁2通过熔融结构12连接成一体。
本实施方式中,熔融结构为直线状。当然,熔融结构也可以为点状,多个点状的熔融结构排成一条直线。
本发明的一种电磁继电器,是将轭铁2的竖直边22中,在朝向线圈3的一面设有采用注塑成型方式形成的塑料层61,以利用该塑料层61绝缘设在轭铁2与线圈3(线圈的漆包线)之间,在该塑料层61的背向线圈3的一面设有采用注塑成型方式形成的塑料凸苞62,以利用该塑料凸苞62与动簧1相固定。本发明的该结构,一方面,能够在不影响绕线空间的前提下,提高轭铁2与线圈3的绝缘性能以及保证绝缘部件的位置精度,并有效减少了装配工序,另一方面,在轭铁2与动簧1固定时,通过塑料凸苞、塑料层和第一注塑体固定轭铁与动簧,替代了现有轭铁与动簧之间以压铆或旋铆固定方式,不会对动簧产生应力使动簧变形,改善了动簧的尺寸一致性。
本发明的一种电磁继电器,将轭铁的竖直边在朝向线圈3的一面还设有凹槽24,所述 塑料层61填充在所述凹槽24中。该结构用凹槽24容纳注塑成型的塑料,在提高绝缘距离的时候减少或不占用绕线空间。本发明采用了将塑料层61的高度设计成超过线圈的线圈架的绕线窗口的竖直方向的尺寸,可以起到增大绝缘距离的效果。
本发明的一种电磁继电器,采用了在轭铁2的竖直边22设有与塑料凸苞62位置相对应的第一透孔23,第一透孔23中填充有采用注塑成型方式形成的第一塑料体,第一塑料体一体连接在所述塑料层61与塑料凸苞62之间。该结构使塑料通过嵌件成型方式附于轭铁2上,不需装配,因此可减少装配带来的额外位置散差,提高绝缘距离的一致性。本发明采用了将塑料凸苞62采用注塑成型方式形成在动簧的第二透孔11中,并使凸出在动簧的第二透孔外的塑料凸苞的截面积大于动簧1的第二透孔11。本发明凸苞62通过熔融注塑成型,冷却后将动簧1压紧于轭铁2背面,形成可靠固定,由于塑料处于熔融状态下就与动簧通孔配合,且配合面积较小,因此冷却过程中不会给动簧带来额外的应力,不易使动簧产生应力形变,可提高动簧的一致性。
本发明的一种电磁继电器,采用了在动簧1与轭铁2的相接触处还采用激光焊接方式使动簧1与轭铁2连接成一体。该结构可以进一步提高动簧定位牢固度与改善动簧热量散热效果。激光焊接可使动簧1与轭铁2的激光照射处产生局部金属融化,通过金属融化将两者形成一个整体,动簧1上的热量可通过熔接处快速通过轭铁2散发。
实施方式二
参见图11至图13所示,本发明的一种电磁继电器第二实施方式,其与第一实施方式的主要不同之处在于:动簧与轭铁固定连接的方式不相同。在该第二实施方式中,动簧1与轭铁2相固定是将成型在轭铁上的塑料凸苞62插入动簧1的第二透孔11中,此时,动簧1的第二透孔11起到定位作用,因为该透孔可以与轭铁上的第一透孔23成型的凸苞62形成间隙配合,然后,通过对凸出在动簧1的第二透孔11外的塑料凸苞进行烫铆处理,使该部分塑料凸苞形变向外延伸形成延伸部621,延伸部621全部或部分盖住动簧1的第二透孔11以外的动簧本体,实现动簧1与轭铁2的固定连接。
本发明的电磁继电器第二实施方式,采用了将成型在轭铁2上的塑料凸苞62插入动簧的第二透孔11中,通过对凸出在动簧1的第二透孔11外的塑料凸苞进行烫铆处理形成延伸部621实现轭铁2与动簧1的固定连接。本发明中所述的烫铆是通过高温使塑料凸苞62融化流动到位后再冷却固化,融化的塑料不会对动簧1产生应力,同时塑料凸苞62与动簧1的配合面积很小,因此不会使动簧1变形,改善了动簧1的尺寸一致性。
与现有技术相比,本发明的电磁继电器的有益效果包括以下多个方面:
1、本发明由于采用了将轭铁的竖直边在朝向线圈的一面设有采用注塑成型方式形成的塑料层,以利用该塑料层绝缘设在轭铁与线圈之间,在背向线圈的一面设有采用注塑成型方式形成的塑料凸苞,以利用该塑料凸苞与动簧相固定。本发明的该结构,一方面能够在不影响绕线空间的前提下,提高轭铁与线圈的绝缘程度以及保证绝缘部件的位置精度,并有效减少了装配工序,另一方面,在轭铁与动簧固定时,通过塑料凸苞、塑料层和第一注塑体固定轭铁与动簧,替代了现有轭铁与动簧之间以压铆或旋铆固定方式,不会对动簧产生应力使动簧变形,改善了动簧的尺寸一致性。
2、本发明由于采用了将轭铁的竖直边中,在朝向线圈的一面还设有凹槽,所述塑料层填充在所述凹槽中。该结构用凹槽容纳注塑成型的塑料,在提高绝缘距离的时候减少或不占用绕线空间。
3、本发明由于采用了将塑料层的高度尺寸设计成超过线圈的线圈架的绕线窗口的竖直方向的尺寸,可以起到增大绝缘距离的效果。
4、本发明由于采用了在轭铁的竖直边设有与塑料凸苞位置相对应的第一透孔,第一透孔中填充有采用注塑成型方式形成的第一塑料体,第一塑料体一体连接在所述塑料层与塑料凸苞之间。该结构使塑料通过嵌件成型方式附于轭铁上,不需装配,因此可减少装配带来的额外位置散差,提高绝缘距离的一致性。
5、本发明由于采用了将塑料凸苞采用注塑成型方式形成在动簧的第二透孔中,并使凸出在动簧的第二透孔外的塑料凸苞的截面积大于动簧的第二透孔。本发明凸苞通过熔融注塑成型,冷却后将动簧压紧于轭铁背面,形成可靠固定,由于塑料处于熔融状态下就与动簧通孔配合,且配合面积较小,因此冷却过程中不会给动簧带来额外的应力,不易使动簧产生应力形变,可提高动簧的一致性。
6、本发明由于采用了将成型在轭铁上的塑料凸苞插入动簧的第二透孔中,通过对凸出在动簧的第二透孔外的塑料凸苞进行烫铆处理,使该部分塑料凸苞形变。本发明烫铆是通过高温使塑料凸苞融化流动到位后冷却固化的方式进行固定,融化的塑料不会对动簧产生应力,同时塑料凸苞与动簧的配合面积很小,因此不会使动簧变形,改善了动簧的尺寸一致性。
7、本发明由于采用了在动簧与轭铁的相接触处还采用激光焊接方式使动簧与轭铁连接成一体。该结构可以进一步提高动簧定位牢固度与改善动簧热量散热效果。
8、塑料层、塑料凸苞和第一塑料体在注塑成型时的塑料浇口可位于塑料层朝向线圈 的面上或者塑料凸苞上,较好的是设置于塑料凸苞上,这种结构,有利于注塑成型,简化模具结构且提高良率。
工业实用性
本发明由于采用了将轭铁的竖直边在朝向线圈的一面设有采用注塑成型方式形成的塑料层,以利用该塑料层绝缘设在轭铁与线圈之间,在背向线圈的一面设有采用注塑成型方式形成的塑料凸苞,以利用该塑料凸苞与动簧相固定。本发明的该结构,一方面能够在不影响绕线空间的前提下,提高轭铁与线圈的绝缘程度以及保证绝缘部件的位置精度,并有效减少了装配工序,另一方面,在轭铁与动簧固定时,通过塑料凸苞、塑料层和第一注塑体固定轭铁与动簧,替代了现有轭铁与动簧之间以压铆或旋铆固定方式,不会对动簧产生应力使动簧变形,改善了动簧的尺寸一致性。
虽然已参照几个典型实施方式描述了本发明,但应当理解,所用的术语是说明和示例性、而非限制性的术语。由于本发明能够以多种形式具体实施而不脱离发明的精神或实质,所以应当理解,上述实施方式不限于任何前述的细节,而应在随附权利要求所限定的精神和范围内广泛地解释,因此落入权利要求或其等效范围内的全部变化和改型都应为随附权利要求所涵盖。

Claims (15)

  1. 一种电磁继电器,包括动簧、轭铁和线圈,所述线圈内设有铁芯其中,轭铁为L型,具有水平边和竖直边;所述轭铁设置于所述线圈的外面,且所述轭铁的水平边与所述铁芯的底部固定连接,所述轭铁的竖直边与所述铁芯的轴线平行;其特征在于:所述轭铁的竖直边在朝向所述线圈的一面设有采用注塑成型方式形成的塑料层,以利用该塑料层绝缘设在轭铁与线圈之间。
  2. 根据权利要求1所述的电磁继电器,其特征在于:所述轭铁的竖直边在背向所述线圈的一面设有采用注塑成型方式形成的塑料凸苞,以利用该塑料凸苞与所述动簧固定连接。
  3. 根据权利要求2所述的电磁继电器,其特征在于:所述轭铁的竖直边设有与塑料凸苞位置相对应的第一透孔,所述第一透孔中设有采用注塑成型方式形成的第一塑料体。
  4. 根据权利要求3所述的电磁继电器,其特征在于:塑料层、塑料凸苞和第一塑料体在注塑成型时的塑料浇口位于塑料凸苞上。
  5. 根据权利要求3所述的电磁继电器,其特征在于:所述轭铁的第一透孔的形状为圆形、方形、三角形、椭圆形或矩形。
  6. 根据权利要求1所述的电磁继电器,其特征在于:所述轭铁的竖直边在朝向所述线圈的一面还设有凹槽,所述塑料层填充在所述凹槽中。
  7. 根据权利要求6所述的电磁继电器,其特征在于:所述塑料层的朝向线圈的一面与轭铁的竖直边的朝向线圈的一面平齐。
  8. 根据权利要求1或6所述的电磁继电器,其特征在于:所述塑料层的朝向线圈的一面凸出于轭铁的竖直边的朝向线圈的一面,且凸出的部分厚度不超过0.4mm。
  9. 根据权利要求1所述的电磁继电器,其特征在于:所述塑料层的高度超过线圈的线圈架的绕线窗口的竖直方向的尺寸。
  10. 根据权利要求3所述的电磁继电器,其特征在于:所述动簧设有与轭铁的第一透孔的位置相对应的第二透孔,所述轭铁的塑料凸苞配合在动簧的第二透孔中并使动簧与轭铁固定连接。
  11. 根据权利要求10所述的电磁继电器,其特征在于:所述塑料凸苞采用注塑成型方式形成并凸出于所述动簧的第二透孔,所述塑料凸苞在凸出于所述动簧的第二透孔以外的末端形成截面积大于所述动簧的第二透孔的固定部,以利用所述固定部全部或部分盖住 所述动簧的第二透孔以外的动簧本体,以实现所述动簧与所述轭铁的固定连接。
  12. 根据权利要求10所述的电磁继电器,其特征在于:所述塑料凸苞插设并凸出于所述动簧的第二透孔,通过对凸出于所述动簧的第二透孔外的塑料凸苞进行烫铆处理,使该部分塑料凸苞形变向外延伸形成延伸部,所述延伸部全部或部分盖住所述动簧的第二透孔以外的动簧本体,以固定所述动簧与所述轭铁。
  13. 根据权利要求1所述的电磁继电器,其特征在于:在所述动簧与所述轭铁的相接触处还设有采用激光焊接形成的熔融结构,所述动簧和所述轭铁通过所述熔融结构连接成一体。
  14. 根据权利要求13所述的电磁继电器,其特征在于:所述熔融结构为点状,多个点状的熔融结构排成一条直线。
  15. 根据权利要求13所述的电磁继电器,其特征在于:所述熔融结构为直线状。
PCT/CN2017/096675 2016-08-29 2017-08-09 电磁继电器 WO2018040872A1 (zh)

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