WO2022179430A1 - 一种高可靠绝缘的超小型电磁继电器 - Google Patents

一种高可靠绝缘的超小型电磁继电器 Download PDF

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Publication number
WO2022179430A1
WO2022179430A1 PCT/CN2022/076646 CN2022076646W WO2022179430A1 WO 2022179430 A1 WO2022179430 A1 WO 2022179430A1 CN 2022076646 W CN2022076646 W CN 2022076646W WO 2022179430 A1 WO2022179430 A1 WO 2022179430A1
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WO
WIPO (PCT)
Prior art keywords
static spring
relay
retaining wall
coil
wall
Prior art date
Application number
PCT/CN2022/076646
Other languages
English (en)
French (fr)
Inventor
林佳宾
董欣赏
苏志愿
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 US18/276,103 priority Critical patent/US20240145197A1/en
Priority to JP2023547185A priority patent/JP2024505298A/ja
Publication of WO2022179430A1 publication Critical patent/WO2022179430A1/zh

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    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/026—Details concerning isolation between driving and switching circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H01H50/043—Details particular to miniaturised relays
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H2050/028—Means to improve the overall withstanding voltage, e.g. creepage distances
    • 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
    • H01H2050/446—Details of the insulating support of the coil, e.g. spool, bobbin, former

Definitions

  • the present disclosure relates to the technical field of relays, in particular to an ultra-small electromagnetic relay with high reliability and insulation.
  • the ultra-miniature electromagnetic relays in the prior art are usually composed of a moving spring armature part, a base part and a casing, wherein the moving spring armature part is generally formed by two groups of moving springs and the armature through combined injection molding, and the two groups of moving springs respectively have normally open contacts.
  • the contact point and the normally closed end contact, the armature part of the moving spring is welded with the static spring part in the base part to form a rocker structure, so that the normally open end contact and the normally closed end contact of the moving spring are respectively connected with the normally open end contact.
  • the contacts of the static spring and the contacts of the normally closed static spring correspond to each other, and the welding method can be laser welding or resistance welding.
  • the coil frame 102 includes The flanges 104 located at both ends and the winding window 105 located between the two flanges 104, the middle section of the U-shaped iron core 103 is wrapped in the coil frame 102, and the two ends 106 of the U-shaped iron core 103 are matched with wires At the two flanges 104 of the bobbin 102, and the pole face 107 of the U-shaped iron core 103, which is matched with the armature of the armature part of the moving spring, is exposed outside the bobbin 102; then, in the winding window 105 of the bobbin 102 The enameled wire 108 is wound at the place to form the coil part 109 (as shown in FIG.
  • the static spring part 200 is matched with the coil part 109 in position (as shown in FIG. 3 ), wherein the static spring part 200 usually contains Four contact static springs 201 (that is, two normally open static springs and two normally closed static springs), each contact static spring 201 includes a contact part 202 and a lead-out pin 203, and the contact part 202 contains static Contact 204; because the working mode of this type of relay coil usually needs to be compatible with monostable and magnetic latching specifications, so the magnetic circuit structure usually needs to have a permanent magnet 206, which is a U-shaped iron core 103 welded to the coil part between the two ends 106 (as shown in FIG. 4 ); finally, the static spring part 200 and the coil part 109 are formed by the second injection molding to form the base part 205 (as shown in FIG. 5 ).
  • the static spring part 200 and the coil part 109 are formed by the second injection molding to form the base part 205 (as shown in FIG. 5 ).
  • the creepage distance M1 between the position of the contact part 202 and the enameled wire 108 of the coil is usually the short position between the input and output circuits (as shown in FIG. 3 ), where the insulation performance exists with the use of the relay.
  • the deterioration trend affects the isolation between the input and output circuits.
  • the permanent magnet 206 and the iron core 103 are positioned by laser welding, and the heat at the spot position during laser welding is rapidly generated, causing the metal at the spot position to melt or even splash. Since the welding position is located near the pole face 107 of the iron core, the welding slag generated by the splash of liquid metal easily accumulates on the pole face 107 of the iron core, which will cause the relay to have functional failures such that the coil does not work or the contacts cannot be reliably connected.
  • the purpose of the present disclosure is to overcome the deficiencies of the prior art and provide an ultra-small electromagnetic relay with high reliability and insulation.
  • the contact part of the static spring can be limited in two directions to avoid the static spring.
  • the contact part of the contact part is injection molded into the base, there is an uncontrollable dispersion in the position, which can improve the consistency of the output circuit of the relay;
  • the creepage distance between the input and output circuits is increased, and the dependence on the base plastic to increase the creepage distance is reduced. Improved the environmental resistance of the relay.
  • an ultra-small electromagnetic relay with high reliability and insulation which includes a coil part and a static spring part;
  • the coil part includes a coil frame;
  • the coil frame includes two flanges, The two flanges are located at both ends of the coil frame;
  • the static spring part includes a static spring arranged at at least one end of the coil frame;
  • the static spring includes a contact part containing a static contact;
  • the static spring The contact part of the spring is arranged at a position close to the flange of the coil frame; in the flange of the coil frame, there are respectively protruding upwards for the contact part of the static spring in two horizontal directions.
  • the first retaining wall and the second retaining wall are limited in position, so as to use the cooperation of the first retaining wall and the second retaining wall to avoid uncontrollable dispersion of the position of the contact part of the static spring during assembly.
  • the relay further includes a plastic part, and the plastic part combines the coil part and the static spring part into a whole by means of injection molding to make the coil part, the static spring part and the static spring part.
  • the plastic part becomes the base part of the relay, and uses the cooperation of the first retaining wall and the second retaining wall to avoid uncontrollable dispersion of the position of the contact part of the static spring when the base part is injection-molded.
  • the coil part further includes a U-shaped iron core and an enameled wire;
  • the coil former encloses the U-shaped iron core therein by means of injection molding; two ends of the U-shaped iron core Protruding upwards from the two flanges of the coil frame respectively, so that the two end faces of the U-shaped iron core serving as pole faces are exposed outside the coil frame; A winding window between the flanges in which the enameled wire is wound.
  • the wall surface of the first blocking wall is arranged along the width direction of the relay, and the first blocking wall blocks the contact part of the static spring and the coil wound around the coil frame in the length direction of the relay. Between the enameled wires in the winding window, the first retaining wall is used to increase the creepage distance between the contact part of the static spring and the enameled wires.
  • the wall surface of the second blocking wall is disposed along the length direction of the relay, and the second blocking wall is located between the contact part of the static spring and the U-shaped iron core in the width direction of the relay ;
  • the second retaining wall and the first retaining wall form an L-shaped contour, the contact part of the static spring is in the L-shaped contour, and the roots of the first retaining wall and the second retaining wall are in the enameled wire winding area outside the outline.
  • the first retaining wall and the second retaining wall are integrally connected.
  • first protruding blocks arranged vertically are respectively provided on the side facing the contact portion of the static spring, and the The first protruding blocks of the first blocking wall and the second blocking wall are respectively abutted against the contact parts of the corresponding static springs, so as to realize common limiting of the contact parts of the static springs.
  • the top of the first protruding block is set as an inclined surface, and the inclined surface of the first protruding block is gradually inclined downward from the inside to the outside, and the outer side of the first protruding block is inclined downward. Set to straight edge.
  • the top ends of the first blocking wall and the second blocking wall are at a height position corresponding to the height direction of the relay higher than the top end of the contact portion of the static spring at the height position corresponding to the relay.
  • the height position in the height direction is a height position corresponding to the height direction of the relay higher than the top end of the contact portion of the static spring at the height position corresponding to the relay.
  • the plastic part completely covers the first blocking wall and the second blocking wall; or, the plastic part partially covers the first blocking wall and the second blocking wall
  • the tops of the first blocking wall and the second blocking wall are exposed outside the plastic part.
  • the coil part further includes permanent magnets installed between the two ends of the U-shaped iron core; in the flange of the coil former, on the center line along the length direction of the relay
  • the two sides of the relay are respectively symmetrical with the first retaining wall and the second retaining wall; between the two second retaining walls arranged along the width direction, a jaw for clamping the permanent magnet in the width direction of the relay is formed;
  • the sides of the two second retaining walls arranged in the width direction facing the permanent magnets are respectively provided with second protruding blocks arranged in the vertical direction, so as to use the second protruding blocks to perform interference fit with the permanent magnets, so that the Permanent magnets are fixed in the coil former.
  • the top of the second protruding block is set as an inclined surface, and the inclined surface of the second protruding block is gradually inclined downward from the inside to the outside, and the outer side of the second protruding block is inclined downward. Set to straight edge.
  • a bottom surface corresponding to the jaw is further protruded upward with a third protruding block.
  • the flange of the coil frame is provided with a first blocking wall and a second blocking wall respectively protruding upward for jointly limiting the contact parts of the static spring in two horizontal directions.
  • the structure of the present disclosure can use the cooperation of the first retaining wall and the second retaining wall to limit the position of the contact part of the static spring in two directions, so as to avoid the contact part of the static spring, especially the injection molding, during assembly. There is an uncontrollable dispersion in the position of the base part, which can improve the consistency of the relay output circuit.
  • the wall surface of the first retaining wall is arranged along the width direction of the relay, and the first retaining wall blocks the contact part of the static spring and the winding window wound around the coil frame in the length direction of the relay. between the enamelled wires in the middle, and the top ends of the first retaining wall and the second retaining wall in a height position corresponding to the height direction of the relay are set higher than the top end of the contact part of the static spring in the position corresponding to the relay. The height position in the height direction.
  • the structure of the present disclosure can prevent the contact part of the static spring from being directly exposed above the enameled wire, increase the creepage distance between the input and output circuits without increasing the external size of the relay, and reduce the amount of plastic It increases the dependence on creepage distance, and also avoids the influence of environmental temperature and moisture changes on the insulation effect during the use of the relay, thereby improving the environmental resistance performance of the relay.
  • the present disclosure adopts the flange of the coil frame, the first blocking wall and the second blocking wall are symmetrically arranged on both sides of the center line along the length direction of the relay; A jaw for clamping the permanent magnets in the width direction of the relay is formed between the two second blocking walls; Two protruding blocks are used to fix the permanent magnet in the coil frame by using the interference fit between the two second protruding blocks and the permanent magnet.
  • the structure of the present disclosure can avoid the drawbacks caused by the use of laser welding for positioning the permanent magnet and the iron core in the prior art.
  • Fig. 1 is the three-dimensional structure schematic diagram of the coil frame part of the electromagnetic relay of the prior art
  • FIG. 2 is a schematic perspective view of a coil portion of a prior art electromagnetic relay
  • Fig. 3 is the schematic diagram of the mating position of the coil part and the static spring part of the electromagnetic relay of the prior art
  • FIG. 4 is a schematic perspective view of a coil portion (containing a permanent magnet) of a prior art electromagnetic relay
  • FIG. 5 is a schematic three-dimensional structure diagram of a base portion of an electromagnetic relay in the prior art
  • FIG. 6 is a schematic exploded perspective view of an embodiment of the present disclosure.
  • FIG. 7 is a schematic three-dimensional structure diagram of an embodiment of the present disclosure (without a casing);
  • FIG. 8 is a schematic perspective view of the base portion of the embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of the mating position of the coil part (containing the permanent magnet) and the static spring part according to the embodiment of the present disclosure.
  • FIG. 10 is a top view of the mating position of the coil part (containing the permanent magnet) and the static spring part according to the embodiment of the present disclosure
  • FIG. 11 is a schematic diagram of the mating position of the coil part (without permanent magnet) and the static spring part according to the embodiment of the present disclosure
  • FIG. 12 is a top view of the mating position of the coil part (without permanent magnets) and the static spring part according to the embodiment of the present disclosure
  • FIG. 13 is a schematic three-dimensional structural diagram of a coil portion (containing a permanent magnet) of an embodiment of the present disclosure
  • FIG. 14 is a top view of a coil portion (containing permanent magnets) of an embodiment of the present disclosure.
  • FIG. 15 is a schematic three-dimensional structural diagram of a coil portion (without permanent magnets) according to an embodiment of the present disclosure
  • FIG. 16 is a top view of a coil portion (without permanent magnets) of an embodiment of the present disclosure
  • FIG. 17 is a schematic perspective view of the bobbin portion of the embodiment of the present disclosure.
  • FIG. 18 is a top view of a bobbin portion of an embodiment of the present disclosure.
  • FIG. 19 is a schematic three-dimensional structural diagram of a U-shaped iron core according to an embodiment of the present disclosure.
  • a highly reliable insulated ultra-miniature electromagnetic relay of the present disclosure includes a housing 1 , a moving spring armature part 2 and a base part 3 (as shown in FIG. 6 ), wherein the moving spring armature part 2 is a Two groups of moving springs and armatures are formed by combined injection molding. The two groups of moving springs are respectively provided with normally open end contacts and normally closed end contacts.
  • the moving spring armature part 2 passes through the material at the location and the static spring part in the base part 3
  • the seesaw structure is formed by welding, so that the normally open end contact and the normally closed end contact of the moving spring are respectively matched with the contacts of the normally open static spring and the contact of the normally closed static spring;
  • the base part 3 includes a coil part 31 , the static spring part 32 and the plastic part 33, the plastic part 33 combines the coil part 31 and the static spring part 32 into a whole by injection molding (as shown in Figure 8), wherein the plastic part 33 is equivalent to the base;
  • the coil The part 31 includes a U-shaped iron core 311, a coil former 5 in which the U-shaped iron core 311 is wrapped by injection molding, and an enameled wire 4 wound around the coil former 5 (as shown in Figures 15 and 16 ), wherein , the U-shaped iron core 311 and the coil frame 5 form the coil frame part 50;
  • the coil frame 5 includes flanges 51 at both ends and a winding window 52 between
  • the static spring part 32 includes a plurality of static springs 6 (as shown in Fig. 9 ) arranged at the normally open end and/or the normally closed end; the static spring 6
  • the upper part is set as the contact part 62 containing the static contact 61, and the lower part is set as the lead-out pin 63; the contact part 62 of the static spring is set at the position close to the flange 51 of the coil frame 5; the coil frame 5 In the flange 51, there are respectively a first blocking wall 511 and a second blocking wall 512 which are protruded upward and are used to limit the contact part 62 of the static spring 6 in two horizontal directions, so as to use the first blocking wall 511 and the second blocking wall 512.
  • the cooperation of the wall 511 and the second blocking wall 512 prevents uncontrollable dispersion of the position of the contact portion 62 of the static spring 6 when the base portion 3 is injection-molded.
  • the definition of the upper and lower orientations in the technical features only represents the relative positional relationship between the components or between the structures in the components.
  • the wall surface of the first blocking wall 511 is arranged along the width direction of the relay, and the first blocking wall 511 blocks the contact part 62 of the static spring 6 and the coil frame in the length direction of the relay. between the enameled wires 4 in the winding window 52 , to increase the creepage distance between the contact part 62 of the static spring 6 and the enameled wires 4 by using the first retaining wall 511 . As shown in FIG. 11 , the creepage distance between the contact part 62 of the static spring 6 and the enameled wire 4 includes three sections.
  • the first section S1 is from the enameled wire 4 along the outer side of the first blocking wall 511 to the first blocking
  • the top of the wall 511 is the top width of the first retaining wall 511
  • the third segment S3 is from the top of the first retaining wall 511 along the inner side of the first retaining wall 511 to the contact part of the static spring 6 62
  • the inner side of the first blocking wall 511 refers to the side of the first blocking wall 511 facing the contact portion 62 of the static spring 6
  • the outer side of the first blocking wall 511 refers to the side of the first blocking wall 511 facing away from the static spring 6.
  • One side of the contact portion 62 of the spring 6 is from the enameled wire 4 along the outer side of the first blocking wall 511 to the first blocking
  • the third segment S3 is from the top of the first retaining wall 511 along the inner side of the first retaining wall 511 to the contact part of the static spring 6 62
  • the inner side of the first blocking wall 511 refers to the side of
  • the longitudinal direction of the relay refers to the longitudinal direction of the U-shaped bottom wall of the U-shaped iron core 311 , which is the X direction as shown in FIG. 8 , the width direction of the relay is the Y direction, and the height direction of the relay is the Z direction.
  • the wall surface of the second blocking wall 512 is disposed along the length direction of the relay, and the second blocking wall 512 is located between the contact part 62 of the static spring 6 and the U-shaped iron core in the width direction of the relay 311; the second blocking wall 512 and the first blocking wall 511 enclose an L-shaped profile, the contact portion 62 of the static spring 6 is within the L-shaped profile, and the first blocking wall 511 and the second blocking wall 511
  • the root of the wall 512 is outside the contour of the winding area of the enameled wire 4 .
  • the first blocking wall 511 and the second blocking wall 512 of the present disclosure as a whole are located outside the winding window 52 of the coil frame in the Z direction, and do not occupy the winding window 52 .
  • the contact part 62 of the static spring 6 is located inside the L-shaped retaining wall, outside the winding window 52 of the coil frame in the X and Y directions, and avoids being directly opposite to the coil enameled wire.
  • first blocking wall 511 and the second blocking wall 512 are connected into one body.
  • first blocking wall 511 and the second blocking wall 512 may also be L-shaped in outline, but not connected.
  • the top of the first protruding block 513 is set as an inclined surface 514, which is gradually inclined downward from the inside to the outside, and the outer side of the first protruding block 513 is set as a straight edge.
  • the inner side of the first protruding block 513 refers to the side connected to the first blocking wall 511 or the second blocking wall 512
  • the outer side of the first protruding block 513 refers to the side connected to the first blocking wall 511 or the second blocking wall 512 . unconnected side.
  • the top of the first protruding block 513 is set as the inclined surface 514, it is convenient for the contact part 62 of the static spring 6 to be placed in the right direction; the outer side of the first protruding block 513 is set as a straight edge, which can reduce the difficulty in machining accuracy .
  • the top ends of the first blocking wall 511 and the second blocking wall 512 are higher than the contact portion 62 of the static spring 6 at a height position corresponding to the height direction of the relay (ie, the Z direction).
  • the top is at a height position corresponding to the height direction of the relay.
  • the plastic part 33 is partially covered with the first blocking wall 511 and the second blocking wall 512 , and the tops of the first blocking wall 511 and the second blocking wall 512 are exposed on the ground. outside the plastic part 33.
  • the plastic part 33 can also be designed to completely cover the first retaining wall 511 and the second retaining wall 512.
  • first blocking wall 511 and the second blocking wall 512 on the coil frame 5 are combined into the base part 3, they are allowed to be partially exposed in the Z direction of the relay, so as to ensure the overall miniaturization of the relay as much as possible; Cover to appropriately reduce the processing difficulty of the base mold.
  • the rigidity of the first blocking wall 511 and the second blocking wall 512 can be further improved, which improves the reliability of the relay. Shape consistency under changes in external conditions such as temperature shocks, thereby improving the ability of the relay to withstand changes in the external environment.
  • the coil part 31 further includes a permanent magnet 7 installed between the two ends 312 of the U-shaped iron core 311; in the flange 51 of the coil frame 5, along the length direction of the relay
  • the first blocking wall 511 and the second blocking wall 512 are symmetrically arranged on both sides of the center line of the relay, respectively; the two second blocking walls 512 arranged along the width direction are formed between the two second blocking walls 512 for the permanent magnet in the width direction of the relay. 7.
  • the second protruding blocks 515 of the two second retaining walls 512 in the same side flange 51 perform an interference fit with the corresponding ends of the permanent magnet 7, so that the permanent magnet 7 is fixed in the coil frame 5, that is, the permanent magnet 7 is fixed in the coil frame 5.
  • the two ends are respectively interference fit in the second protruding blocks 515 of the four second blocking walls 512 of the two flanges 51 of the coil former 5 .
  • the number of the first blocking walls 511 and the second blocking walls 512 can be adjusted according to the relay output circuit, but the card for fixing the permanent magnets needs to be reserved. tight position.
  • the second protruding block 515 By arranging the second protruding block 515 to fix the permanent magnet 7 by interference fit, the contact area can be reduced, thereby reducing the generation of plastic chips.
  • the top of the second protruding block 515 is set as an inclined surface 516, which is gradually inclined downward from the inside to the outside, and the outer side of the second protruding block 515 is set as a straight edge.
  • a third protruding block 531 is further protruded upward from the bottom surface corresponding to the clamping opening 53. As shown in FIG.
  • the third protruding block 531 functions to increase the creepage distance between the contact portion 62 of the static spring 6 and the enameled wire 4 , and can also be used to support the permanent magnet 7 to avoid crushing the enameled wire.
  • the permanent magnet 7 is not necessary, for example, when the relay coil works only as a monostable.
  • An ultra-small electromagnetic relay with high reliability and insulation of the present disclosure adopts that in the flange 51 of the coil frame 5, there are respectively upwardly protruding protruding devices for connecting the contact parts 62 of the static spring 6 in two horizontal directions.
  • the first retaining wall 511 and the second retaining wall 512 are limited.
  • the structure of the present disclosure can use the cooperation of the first blocking wall 511 and the second blocking wall 512 to limit the contact portion 62 of the static spring 6 in two directions, so as to prevent the contact portion 62 of the static spring 6 from When the base part 3 is injection-molded, there is an uncontrollable dispersion in the position, so that the consistency of the relay output circuit can be improved.
  • the wall surface of the first blocking wall 511 is arranged along the width direction of the relay, and the first blocking wall 511 is blocked from the static spring 6 in the length direction of the relay.
  • the tops of the first blocking wall 511 and the second blocking wall 512 are arranged at a height position corresponding to the height direction of the relay.
  • the top end of the contact portion 62 of the static spring 6 is at a height position corresponding to the height direction of the relay.
  • the structure of the present disclosure can prevent the contact part 62 of the static spring 6 from being directly exposed above the enameled wire 4, and can increase the creepage distance between the input and output circuits without increasing the external size of the relay, and reduce the amount of contact with the base.
  • Plastic increases the dependence on creepage distance, and also avoids the influence of environmental temperature, moisture changes, etc. on the insulation effect during the use of the relay, thereby improving the environmental resistance of the relay.
  • the flange 51 of the coil frame 5 is symmetrically arranged on both sides of the center line along the length direction of the relay.
  • the second blocking wall 512; and the jaws 53 for clamping the permanent magnet 7 in the width direction of the relay are formed between the two second blocking walls 512 arranged in the width direction;
  • the sides of the second retaining walls 512 facing the permanent magnets are respectively provided with second protruding blocks 515 arranged vertically, so that the permanent magnets 7 can be fixed by the interference fit between the two second protruding blocks 515 and the permanent magnets 7 . in the bobbin 5.
  • the structure of the present disclosure can avoid the drawbacks caused by the use of laser welding for positioning the permanent magnet and the iron core in the prior art. It not only avoids the generation of welding slag and foreign matter, but also reduces the processing procedure and the manufacturing difficulty.

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Abstract

本公开提供了一种高可靠绝缘的超小型电磁继电器，包括线圈部分和静簧部分；线圈部分包括线圈架；线圈架包括两个凸缘，两个凸缘位于线圈架的两端部；静簧部分包括设置在线圈架的至少一端的静簧；静簧包括含有静触点的触点部分；静簧的触点部分设置在靠近线圈架的凸缘的位置处；在线圈架的凸缘中，分别向上凸伸设有用来在水平的两个方向对静簧的触点部分进行共同限位的第一挡墙和第二挡墙。本公开可以利用第一挡墙和第二挡墙的配合，避免静簧的触点部分在装配时位置出现不可控的散差。

Description

一种高可靠绝缘的超小型电磁继电器
交叉引用
本公开要求于2021年2月25日提交的申请号为202110213966.3的中国专利申请的优先权，该中国专利申请的全部内容通过引用全部并入本文。
技术领域
本公开涉及继电器技术领域，特别是涉及一种高可靠绝缘的超小型电磁继电器。
背景技术
超小型电磁继电器，因为体积小，大量使用于网络通讯、医疗设备等需要产品密集安装的领域。现有技术的超小型电磁继电器通常由动簧衔铁部分、底座部分和外壳组成，其中，动簧衔铁部分一般由两组动簧、衔铁通过组合注塑形成整体，两组动簧分别有常开端触点与常闭端触点，动簧衔铁部分通过定位处的材料与底座部分中的静簧部分焊接形成翘翘板结构，使得动簧的常开端触点、常闭端触点分别与常开静簧的触点、常闭静簧的触点对应配合，焊接方式可为激光焊或者电阻焊等方式。
这种超小型电磁继电器的底座部分通常由线圈部分和静簧部分组成。底座部分制作时，先是将U形铁芯通过第一次注塑成型方式形成线圈架部分(如图1所示)，线圈架部分101包括了线圈架102和U形铁芯103，线圈架102包括位于两端的凸缘104和位于两个凸缘104之间的绕线窗口105，U形铁芯103的中间段被包覆在线圈架102中，U形铁芯103的两端部106配合在线圈架102的两个凸缘104处，并且U形铁芯103的作为与动簧衔铁部分的衔铁相配合的极面107露出在线圈架102外；接着，在线圈架102的绕线窗口105处缠绕漆包线108，形成了线圈部分109(如图2所示)；然后，将静簧部分200与线圈部分109在位置上进行匹配(如图3所示)，其中，静簧部分200通常含有四个触点静簧201(即两个常开静簧和两个常闭静簧)，每个触点静簧201均包括有触点部分202和引出脚203，触点部分202中含有静触点204；由于这类继电器线圈工作方式通常需要兼容单稳态与磁保持规格，因此磁路结构中通常还需要带有永磁铁206，永磁铁206是焊接于线圈部分的U形铁芯103的两端部106之间(如图4所示)；最后，将静簧部分200与线圈部分109通过第二次注塑成型方式形成底座部分205(如图5所示)。
这种将底座、磁路、静簧三者组合注塑的解决方案，可以达到减少体积及提高绝缘能力的效果，但是仍然存在着如下弊端：
一是，四个触点静簧201的触点部分202的位置在X、Y方向的位置一致性精度不足，如图5所示，X方向为继电器的长度方向(即沿着铁芯的U形底壁的长度方向)，Y方向为继电器的宽度方向。这是由于现有技术的电磁继电器，如图3所示，触点静簧201的触点部分202的位置在X、Y方向上没有进行有效的限位，这样会造成触点位置出现偏差，导致静触点与动触点的接触位置出现偏差。这种偏差易导致输出回路之间的接触电阻一致性以及电耐久性的一致性不足，从而影响了产品的一致性。
二是，触点部分202的位置与线圈的漆包线108之间的爬电距离M1通常为输入输出回路之间较短的位置(如图3所示)，该处绝缘性能随着继电器的使用存在恶化趋势，影响输入输出回路之间的隔离度。这是由于：虽然触点部分202的位置与线圈之间在底座组合注塑之后被底座塑料所隔离，但由于线圈骨架塑料与底座塑料通常不为完全一样的材料，材料之间存在膨胀率，耐热性等特性上的差异；且由于底座塑料与线圈塑料是分开二次加工而成，通常线圈骨架是先加工成型，加工完工之后骨架塑料表面难以避免会因为受空气潮气等气氛因素影响洁净度，因此微观上线圈架骨架塑料与底座塑料之间无法做到完全紧密结合。这种结合不够紧密的弊端随着继电器使用过程的环境温度，潮气变化等影响，会进一步恶化。因此由于静簧触点部分202的位置与线圈之间在底座注塑之前，触点部分202的位置直接暴露于漆包线上方，两者之间爬电距离M1较短，在线圈骨架塑料与底座塑料之间的微观缝隙，将成为电压击穿的路径。
三是，永磁铁206与铁芯103是采用激光焊接定位，激光焊接时光斑位置热量急剧产生，使得光斑位置金属融化乃至飞溅。由于焊接位置位于铁芯极面107附近，液态金属飞溅产生的焊渣容易堆积于铁芯极面107上，这将导致继电器产生线圈加电不工作或触点无法可靠接通的功能故障。
公开内容
本公开的目的在于克服现有技术之不足，提供一种高可靠绝缘的超小型电磁继电器，通过结构改进，一方面，能够对静簧的触点部分进行两个方向的限位，避免静簧的触点部分在注塑为底座时位置出现不可控的散差，从而能够提升继电器输出回路的一致性；另一方面，能够避免静簧的触点部分直接暴露于漆包线上方，可在不增加继电器外形尺寸的前提下加大了输入输出回路之间的爬电距离，减少了对靠底座塑料增加爬电距离的依赖，同 时也避免继电器使用过程中受环境温度，潮气变化等影响绝缘效果，从而提升了继电器的耐环境性能。
本公开解决其技术问题所采用的技术方案是：一种高可靠绝缘的超小型电磁继电器，包括线圈部分和静簧部分；所述线圈部分包括线圈架；所述线圈架包括两个凸缘，两个所述凸缘位于所述线圈架的两端部；所述静簧部分包括设置在线圈架的至少一端的静簧；所述静簧包括含有静触点的触点部分；所述静簧的触点部分设置在靠近线圈架的凸缘的位置处；所述线圈架的凸缘中，分别向上凸伸设有用来在水平的两个方向对所述静簧的触点部分进行共同限位的第一挡墙和第二挡墙，以利用第一挡墙和第二挡墙的配合，避免静簧的触点部分在装配时位置出现不可控的散差。
根据本公开的一些实施方式，所述继电器还包括塑料件，所述塑料件通过注塑成型方式将线圈部分和静簧部分组合成为一个整体而使所述线圈部分、所述静簧部分和所述塑料件成为所述继电器的底座部分，并利用第一挡墙和第二挡墙的配合，避免静簧的触点部分在底座部分注塑成型时位置出现不可控的散差。
根据本公开的一些实施方式，所述线圈部分还包括U形铁芯和漆包线；所述线圈架通过注塑成型方式将U形铁芯包覆在其中；所述U形铁芯的两端端头分别从线圈架的两个所述凸缘处向上凸伸，以使所述U形铁芯中作为极面的两端端面露出在线圈架外；所述线圈架还具有形成在两个所述凸缘之间的绕线窗口，所述漆包线缠绕所述绕线窗口中。
根据本公开的一些实施方式，所述第一挡墙的墙面沿着继电器的宽度方向设置，所述第一挡墙在继电器的长度方向挡在静簧的触点部分与缠绕于线圈架的绕线窗口中的漆包线之间，以利用第一挡墙增加静簧的触点部分与漆包线之间的爬电距离。
根据本公开的一些实施方式，所述第二挡墙的墙面沿着继电器的长度方向设置，所述第二挡墙在继电器的宽度方向位于静簧的触点部分与U形铁芯之间；所述第二挡墙和第一挡墙围成L形轮廓，所述静簧的触点部分处在L形轮廓内，且第一挡墙和第二挡墙的根部处在漆包线缠绕区域的轮廓之外。
根据本公开的一些实施方式，所述第一挡墙和所述第二挡墙连接成一体。
根据本公开的一些实施方式，所述第一挡墙和所述第二挡墙中，在朝向静簧的触点部分的一面分别设有沿着竖向设置的第一凸出块，所述第一挡墙和所述第二挡墙的第一凸出块分别与对应的静簧的触点部分相抵接，以实现对静簧的触点部分进行共同限位。
根据本公开的一些实施方式，所述第一凸出块的顶部设为斜面，且所述第一凸出块的斜面是由内向外呈渐次向下倾斜，所述第一凸出块的外侧设为直边。
根据本公开的一些实施方式，所述第一挡墙和所述第二挡墙的顶端在对应于继电器的高度方向的高度位置高于所述静簧的触点部分的顶端在对应于继电器的高度方向的高度位置。
根据本公开的一些实施方式，所述塑料件完全包覆于所述第一挡墙和所述第二挡墙；或者是，所述塑料件部分包覆于所述第一挡墙和所述第二挡墙，所述第一挡墙和所述第二挡墙的顶部露在所述塑料件外。
根据本公开的一些实施方式，所述线圈部分还包括安装在U形铁芯的两端端头之间的永磁铁；所述线圈架的凸缘中，在沿着继电器的长度方向的中心线的两边分别对称有所述第一挡墙和所述第二挡墙；沿宽度方向设置的两个第二挡墙之间形成用来在继电器的宽度方向对永磁铁进行夹持的夹口；沿宽度方向设置的两个第二挡墙的朝向永磁铁的一面分别设有沿着竖向设置的第二凸出块，以利用所述第二凸出块与永磁铁进行过盈配合，使永磁铁固定于线圈架中。
根据本公开的一些实施方式，所述第二凸出块的顶部设为斜面，且所述第二凸出块的斜面是由内向外呈渐次向下倾斜，所述第二凸出块的外侧设为直边。
根据本公开的一些实施方式，所述线圈架的凸缘中，在对应于夹口的底面还向上凸伸设有第三凸出块。
与现有技术相比较，本公开的有益效果是：
1、本公开由于采用了在线圈架的凸缘中，分别向上凸伸设有用来在水平的两个方向对静簧的触点部分进行共同限位的第一挡墙和第二挡墙。本公开的这种结构，能够利用第一挡墙和第二挡墙的配合，对静簧的触点部分进行两个方向的限位，避免静簧的触点部分在装配时特别是注塑为底座部分时位置出现不可控的散差，从而能够提升继电器输出回路的一致性。
2、本公开由于采用了将第一挡墙的墙面沿着继电器的宽度方向设置，且第一挡墙在继电器的长度方向挡在静簧的触点部分与缠绕于线圈架的绕线窗口中的漆包线之间，以及将第一挡墙和所述第二挡墙的顶端在对应于继电器的高度方向的高度位置设置成高于所述静簧的触点部分的顶端在对应于继电器的高度方向的高度位置。本公开的这种结构，能够避免静簧的触点部分直接暴露于漆包线上方，可在不增加继电器外形尺寸的前提下加大了输入输出回路之间的爬电距离，减少了对靠底座塑料增加爬电距离的依赖，同时也避免继电器使用过程中受环境温度，潮气变化等影响对绝缘效果的影响，从而提升了继电器的耐环境性能。
3、本公开由于采用了线圈架的凸缘中，在沿着继电器的长度方向的中心线的两边分别对称有所述第一挡墙和所述第二挡墙；且让沿宽度方向设置的两个第二挡墙之间形成用来在继电器的宽度方向对永磁铁进行夹持的夹口；所述两个第二挡墙的朝向永磁铁的一面分别设有沿着竖向设置的第二凸出块，以利用两个第二凸出块与永磁铁的过盈配合，使永磁铁固定于线圈架中。本公开的这种结构，可以避免现有技术中永磁铁与铁芯采用激光焊接定位所带来的弊端。
以下结合附图及实施例对本公开作进一步详细说明；但本公开的一种超小型信号继电器不局限于实施例。
附图说明
图1是现有技术的电磁继电器的线圈架部分的立体构造示意图；
图2是现有技术的电磁继电器的线圈部分的立体构造示意图；
图3是现有技术的电磁继电器的线圈部分与静簧部分的配合位置示意图；
图4是现有技术的电磁继电器的线圈部分(含有永磁铁)的立体构造示意图；
图5是现有技术的电磁继电器的底座部分的立体构造示意图；
图6是本公开的实施例的立体构造分解示意图；
图7是本公开的实施例的立体构造示意图(未含外壳)；
图8是本公开的实施例的底座部分的立体构造示意图；
图9是本公开的实施例的线圈部分(含有永磁铁)与静簧部分的配合位置示意图；
图10是本公开的实施例的线圈部分(含有永磁铁)与静簧部分的配合位置俯视图；
图11是本公开的实施例的线圈部分(不含永磁铁)与静簧部分的配合位置示意图；
图12是本公开的实施例的线圈部分(不含永磁铁)与静簧部分的配合位置俯视图；
图13是本公开的实施例的线圈部分(含有永磁铁)的立体构造示意图；
图14是本公开的实施例的线圈部分(含有永磁铁)的俯视图；
图15是本公开的实施例的线圈部分(不含永磁铁)的立体构造示意图；
图16是本公开的实施例的线圈部分(不含永磁铁)的俯视图；
图17是本公开的实施例的线圈架部分的立体构造示意图；
图18是本公开的实施例的线圈架部分的俯视图；
图19是本公开的实施例的U形铁芯的立体构造示意图。
具体实施方式
实施例
参见图6至图19所示，本公开的一种高可靠绝缘的超小型电磁继电器，包括外壳1、动簧衔铁部分2和底座部分3(如图6)，其中，动簧衔铁部分2是由两组动簧、衔铁通过组合注塑形成整体，两组动簧分别设有常开端触点与常闭端触点，动簧衔铁部分2通过定位处的材料与底座部分3中的静簧部分焊接形成翘翘板结构，使得动簧的常开端触点、常闭端触点分别与常开静簧的触点、常闭静簧的触点对应配合；所述底座部分3包括线圈部分31、静簧部分32以及塑料件33，塑料件33通过注塑成型方式将线圈部分31和静簧部分32组合成为一个整体(如图8所示)，其中，塑料件33相当于底座；所述线圈部分31包括U形铁芯311、通过注塑成型方式而将U形铁芯311包覆于其中的线圈架5，以及缠绕于线圈架5的漆包线4(如图15、图16所示)，其中，U形铁芯311和线圈架5组成线圈架部分50；所述线圈架5包括处于两端部的凸缘51以及处于凸缘之间用来缠绕漆包线的绕线窗口52；所述U形铁芯311处于两端部的端头312分别从线圈架5的处于两端部的两个凸缘51处向上凸伸，以使U形铁芯311的作为极面313的两端端面露出在线圈架5外(如图18、图19所示)；所述静簧部分32包括设置在常开端和/或常闭端的多个静簧6(如图9所示)；所述静簧6的上部设为含有静触点61的触点部分62，下部设为引出脚63；所述静簧的触点部分62设置在靠近线圈架5的凸缘51的位置处；所述线圈架5的凸缘51中，分别向上凸伸设有用于在水平的两个方向对静簧6的触点部分62进行共同限位的第一挡墙511和第二挡墙512，以利用第一挡墙511和第二挡墙512的配合，避免静簧6的触点部分62在底座部分3注塑成型时位置出现不可控的散差。
本公开中，对于技术特征中的上、下等方位的限定，仅表示部件之间或部件中构造之间的相对位置关系，比如，静簧6的上部和下部，是指静簧6配合于线圈架5时，且U形铁芯311的两端端头312均分别朝上时，静簧6所对应的上部特征和下部特征。
本实施例中，所述第一挡墙511的墙面沿着继电器的宽度方向设置，所述第一挡墙511在继电器的长度方向挡在静簧6的触点部分62与缠绕于线圈架的绕线窗口52中的漆包线4之间，以利用第一挡墙511增加静簧6的触点部分62与漆包线4之间的爬电距离。如图11所示，静簧6的触点部分62与漆包线4之间的爬电距离包括了三段，第一段S1 是由漆包线4沿着第一挡墙511的外侧一面至第一挡墙511的顶端，第二段S2是第一挡墙511的顶端宽度，第三段S3是由第一挡墙511的顶端沿着第一挡墙511的内侧一面至静簧6的触点部分62，其中，第一挡墙511的内侧一面是指第一挡墙511朝向静簧6的触点部分62的一面，第一挡墙511的外侧一面则是指第一挡墙511背向静簧6的触点部分62的一面。另外，继电器的长度方向是指U形铁芯311的U形底壁的长度方向，如图8所示为X方向，继电器的宽度方向为Y方向，继电器的高度方向为Z方向。
本实施例中，所述第二挡墙512的墙面沿着继电器的长度方向设置，所述第二挡墙512在继电器的宽度方向上位于静簧6的触点部分62与U形铁芯311之间；所述第二挡墙512和第一挡墙511围成L形轮廓，所述静簧6的触点部分62处在L形轮廓内，且第一挡墙511和第二挡墙512的根部处在漆包线4缠绕区域的轮廓之外。本公开的第一挡墙511和第二挡墙512整体在Z方向上位于线圈架的绕线窗口52之外，不占用绕线窗口52。静簧6的触点部分62于L形挡墙内侧，在X、Y方向上位于线圈架的绕线窗口52之外，避免与线圈漆包线直接相对。
本实施例中，所述第一挡墙511和所述第二挡墙512连接成一体。当然，第一挡墙511和第二挡墙512也可以是轮廓为L形，但是不相连接。
本实施例中，所述第一挡墙511和所述第二挡墙512中，在朝向静簧6的触点部分62的一面(即内侧一面)分别设有沿着竖向(即Z向)设置的第一凸出块513，第一凸出块513与对应的静簧6的触点部分62相抵接，以实现对静簧6的触点部分62进行共同限位。通过设置第一凸出块513，对静簧6进行限位，可以减小接触面积，从而减少塑料屑的产生。
本实施例中，所述第一凸出块513的顶部设为斜面514，且是由内向外呈渐次向下倾斜，所述第一凸出块513的外侧设为直边。第一凸出块513的内侧是指与第一挡墙511或第二挡墙512相连接的一侧，第一凸出块513的外侧是指与第一挡墙511或第二挡墙512不相连接的一侧。通过将第一凸出块513的顶部设为斜面514，便于静簧6的触点部分62导正放置；将第一凸出块513的外侧设为直边，可以减小加工精度上的难度。
本实施例中，所述第一挡墙511和所述第二挡墙512的顶端在对应于继电器的高度方向(即Z向)的高度位置高于所述静簧6的触点部分62的顶端在对应于继电器的高度方向的高度位置。
本实施例中，所述塑料件33部分包覆于所述第一挡墙511和所述第二挡墙512，所述第一挡墙511和所述第二挡墙512的顶部露在所述塑料件33外。当然，根据需要，也 可以设计成塑料件33完全包覆于所述第一挡墙511和所述第二挡墙512。
线圈架5上的第一挡墙511和第二挡墙512在组合注塑为底座部分3之后，在继电器Z方向上允许局部露出，以尽量保证继电器整体小型化；但有时也设计为被底座塑料覆盖，以适当降低底座模具加工难度。线圈架5的第一挡墙511和第二挡墙512被底座部分3的塑料局部或全被覆盖包裹后，第一挡墙511和第二挡墙512的刚性可以进一步提升，提高继电器在受温度冲击等外界条件变化下的形状一致性，从而提升继电器性能以抵御外界环境变化的能力。
本实施例中，所述线圈部分31还包括安装在U形铁芯311的两端端头312之间的永磁铁7；所述线圈架5的凸缘51中，在沿着继电器的长度方向的中心线的两边分别对称设置有所述第一挡墙511和所述第二挡墙512；沿宽度方向设置的两个第二挡墙512之间形成用来在继电器的宽度方向对永磁铁7进行夹持的夹口53；沿宽度方向设置的两个第二挡墙512的朝向永磁铁7的一面分别设有沿着竖向设置的第二凸出块515，以利用线圈架5的同一侧凸缘51中的两个第二挡墙512的第二凸出块515与永磁铁7的对应端进行过盈配合，使永磁铁7固定于线圈架5中，即，永磁铁7的两端分别过盈配合在线圈架5的两个凸缘51的四个第二挡墙512的第二凸出块515中。本实施例共设有四组第一挡墙511和第二挡墙512，可以根据继电器输出回路来相应调整第一挡墙511和第二挡墙512的数量，但需保留固定永磁铁的卡紧位置。通过设置第二凸出块515，对永磁铁7进行过盈配合固定，可以减小接触面积，从而减少塑料屑的产生。
本实施例中，所述第二凸出块515的顶部设为斜面516，且是由内向外呈渐次向下倾斜，所述第二凸出块515的外侧设为直边。通过将第二凸出块515的顶部设为斜面516，便于永磁铁7导正安装；将第二凸出块515的外侧设为直边，可以减小加工精度上的难度。
本实施例中，所述线圈架5的凸缘51中，在对应于夹口53的底面还向上凸伸设有第三凸出块531。第三凸出块531起到增加静簧6的触点部分62与漆包线4之间爬电距离的作用，同时可用作支撑永磁铁7，避免压伤漆包线。
值得注意的是，永磁铁7并不是必须的，比如，继电器线圈工作仅为单稳态时。
本公开的一种高可靠绝缘的超小型电磁继电器，采用了在线圈架5的凸缘51中，分别向上凸伸设有用来在水平的两个方向对静簧6的触点部分62进行共同限位的第一挡墙511和第二挡墙512。本公开的这种结构，能够利用第一挡墙511和第二挡墙512的配合，对静簧6的触点部分62进行两个方向的限位，避免静簧6的触点部分62在注塑为底座部分3时位置出现不可控的散差，从而能够提升继电器输出回路的一致性。
本公开的一种高可靠绝缘的超小型电磁继电器，采用了将第一挡墙511的墙面沿着继电器的宽度方向设置，且第一挡墙511在继电器的长度方向挡在静簧6的触点部分62与缠绕于线圈架5的绕线窗口52中的漆包线4之间，以及将第一挡墙511和所述第二挡墙512的顶端在对应于继电器的高度方向的高度位置设置成高于所述静簧6的触点部分62的顶端在对应于继电器的高度方向的高度位置。本公开的这种结构，能够避免静簧6的触点部分62直接暴露于漆包线4上方，可在不增加继电器外形尺寸的前提下加大输入输出回路之间的爬电距离，减少对靠底座塑料增加爬电距离的依赖，同时也避免继电器使用过程中受环境温度，潮气变化等影响对绝缘效果的影响，从而提升了继电器的耐环境性能。
本公开的一种高可靠绝缘的超小型电磁继电器，采用了线圈架5的凸缘51中，在沿着继电器的长度方向的中心线的两边分别对称有所述第一挡墙511和所述第二挡墙512；且让沿宽度方向设置的两个第二挡墙512之间形成用来在继电器的宽度方向对永磁铁7进行夹持的夹口53；沿宽度方向设置的两个第二挡墙512的朝向永磁铁的一面分别设有沿着竖向设置的第二凸出块515，以利用两个第二凸出块515与永磁铁7的过盈配合，使永磁铁7固定于线圈架5中。本公开的这种结构，可以避免现有技术中永磁铁与铁芯采用激光焊接定位所带来的弊端。既避免了焊渣异物的产生，同时也减少了加工工序，降低了制造难度。
上述只是本公开的较佳实施例，并非对本公开作任何形式上的限制。虽然本公开已以较佳实施例揭露如上，然而并非用以限定本公开。任何熟悉本领域的技术人员，在不脱离本公开技术方案范围的情况下，都可利用上述揭示的技术内容对本公开技术方案作出许多可能的变动和修饰，或修改为等同化的等效实施例。因此，凡是未脱离本公开技术方案的内容，依据本公开技术实质对以上实施例所做的任何简单修改、等同变化及修饰，均应落在本公开技术方案保护的范围内。

Claims (11)

  1. 一种高可靠绝缘的超小型电磁继电器，包括线圈部分和静簧部分；所述线圈部分包括线圈架；所述线圈架包括两个凸缘，两个所述凸缘位于所述线圈架的两端部；所述静簧部分包括设置在所述线圈架的至少一端的静簧；其特征在于：所述静簧包括含有静触点的触点部分；所述触点部分设置在靠近所述线圈架的所述凸缘的位置处；在所述凸缘中，分别向上凸伸设有用来在水平的两个方向对所述静簧的所述触点部分进行共同限位的第一挡墙和第二挡墙，以利用所述第一挡墙和所述第二挡墙的配合，避免所述静簧的所述触点部分在装配时位置出现不可控的散差。
  2. 根据权利要求1所述的高可靠绝缘的超小型电磁继电器，其特征在于：所述继电器还包括塑料件，所述塑料件通过注塑成型方式将所述线圈部分和所述静簧部分组合成为一个整体而使所述线圈部分、所述静簧部分和所述塑料件成为所述继电器的底座部分，并利用所述第一挡墙和所述第二挡墙的配合，避免所述静簧的所述触点部分在所述底座部分注塑成型时位置出现不可控的散差。
  3. 根据权利要求2所述的高可靠绝缘的超小型电磁继电器，其特征在于：所述线圈部分还包括U形铁芯和漆包线；所述线圈架通过注塑成型方式将所述U形铁芯包覆在其中；所述U形铁芯的两端端头分别从所述线圈架的两个所述凸缘处向上凸伸，以使所述U形铁芯中作为极面的两端端面露出在所述线圈架外；所述线圈架还具有形成在两个所述凸缘之间的绕线窗口，所述漆包线缠绕在所述绕线窗口中。
  4. 根据权利要求3所述的高可靠绝缘的超小型电磁继电器，其特征在于：所述第一挡墙的墙面沿着继电器的宽度方向设置，所述第一挡墙在继电器的长度方向挡在所述静簧的所述触点部分与缠绕于线圈架的绕线窗口中的所述漆包线之间，以利用所述第一挡墙增加所述静簧的触点部分与所述漆包线之间的爬电距离。
  5. 根据权利要求4所述的高可靠绝缘的超小型电磁继电器，其特征在于：所述第二挡墙的墙面沿着继电器的长度方向设置，所述第二挡墙在继电器的宽度方向位于所述静簧的触点部分与所述U形铁芯之间；所述第二挡墙和所述第一挡墙围成L形轮廓，所述静簧的触点部分处在所述L形轮廓内，且所述第一挡墙和所述第二挡墙的根部处在所述漆包线缠绕区域的轮廓之外。
  6. 根据权利要求5所述的高可靠绝缘的超小型电磁继电器，其特征在于：所述第一挡墙和所述第二挡墙连接成一体。
  7. 根据权利要求5或6所述的高可靠绝缘的超小型电磁继电器，其特征在于：所述第一挡墙和所述第二挡墙中，在朝向所述静簧的触点部分的一面分别设有沿着竖向设置的第一凸出块，所述第一挡墙和所述第二挡墙的第一凸出块分别与对应的所述静簧的触点部分相抵接，以实现对所述静簧的触点部分进行共同限位。
  8. 根据权利要求7所述的高可靠绝缘的超小型电磁继电器，其特征在于：所述第一凸出块的顶部设为斜面，且所述第一凸出块的斜面是由内向外呈渐次向下倾斜，所述第一凸出块的外侧设为直边。
  9. 根据权利要求5或6所述的高可靠绝缘的超小型电磁继电器，其特征在于：所述第一挡墙和所述第二挡墙的顶端在对应于继电器的高度方向的高度位置高于所述静簧的触点部分的顶端在对应于继电器的高度方向的高度位置。
  10. 根据权利要求5或6所述的高可靠绝缘的超小型电磁继电器，其特征在于：所述塑料件完全包覆于所述第一挡墙和所述第二挡墙；或者是，所述塑料件部分包覆于所述第一挡墙和所述第二挡墙，所述第一挡墙和所述第二挡墙的顶部露在所述塑料件外。
  11. 根据权利要求5或6所述的高可靠绝缘的超小型电磁继电器，其特征在于：所述线圈部分还包括安装在所述U形铁芯的两端端头之间的永磁铁；所述线圈架的所述凸缘中，在沿着继电器的长度方向的中心线的两边分别对称设置有所述第一挡墙和所述第二挡墙；沿宽度方向设置的两个所述第二挡墙之间形成用来在继电器的宽度方向对所述永磁铁进行夹持的夹口；沿宽度方向设置的两个所述第二挡墙的朝向所述永磁铁的一面分别设有沿着竖向设置的第二凸出块，以利用所述第二凸出块与所述永磁铁进行过盈配合，使所述永磁铁固定于所述线圈架中，其中，所述第二凸出块的顶部设为斜面，且所述第二凸出块的斜面是由内向外呈渐次向下倾斜，所述第二凸出块的外侧设为直边；所述线圈架的凸缘中，在对应于所述夹口的底面还向上凸伸设有第三凸出块。
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CN211208341U (zh) * 2020-01-02 2020-08-07 厦门宏发汽车电子有限公司 静簧的倒装式插接结构
CN113012988A (zh) * 2021-02-25 2021-06-22 厦门宏发信号电子有限公司 一种高可靠绝缘的超小型电磁继电器
CN214588645U (zh) * 2021-02-25 2021-11-02 厦门宏发信号电子有限公司 高可靠绝缘的超小型电磁继电器

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