EP2251886A1 - Elektromagnetisches Relais und Montageverfahren dafür - Google Patents

Elektromagnetisches Relais und Montageverfahren dafür Download PDF

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Publication number
EP2251886A1
EP2251886A1 EP09160229A EP09160229A EP2251886A1 EP 2251886 A1 EP2251886 A1 EP 2251886A1 EP 09160229 A EP09160229 A EP 09160229A EP 09160229 A EP09160229 A EP 09160229A EP 2251886 A1 EP2251886 A1 EP 2251886A1
Authority
EP
European Patent Office
Prior art keywords
unit
electromagnetic
coil
frame set
coil winding
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP09160229A
Other languages
English (en)
French (fr)
Other versions
EP2251886B1 (de
Inventor
Ming-Chang Kuo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Good Sky Electric Co Ltd
Original Assignee
Good Sky Electric Co Ltd
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 Good Sky Electric Co Ltd filed Critical Good Sky Electric Co Ltd
Priority to EP20090160229 priority Critical patent/EP2251886B1/de
Publication of EP2251886A1 publication Critical patent/EP2251886A1/de
Application granted granted Critical
Publication of EP2251886B1 publication Critical patent/EP2251886B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/44—Magnetic coils or windings
    • H01H50/443—Connections to coils
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H2011/0087—Welding switch parts by use of a laser beam
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/023—Details concerning sealing, e.g. sealing casing with resin
    • 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
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature
    • H01H51/2281—Contacts rigidly combined with armature
    • H01H51/229—Blade-spring contacts alongside armature

Definitions

  • the present invention relates to an electromagnetic relay, more particularly to an electromagnetic relay including an armature component supported pivotally at a middle portion thereof.
  • U.S. Patent No. 4,881,053 discloses an electromagnetic relay 1 including a casing 11, an electromagnet block 12, and a base 13 that are sealed in the casing 11.
  • the electromagnet block 12 includes a spool 121, two pairs of junction terminals 123 having coil winding portions 122 exposed from opposite longitudinal sides of the spool 121, and coils 124 wound on the spool 121.
  • Each of the coils 124 has one end that is to be wound on one of the coil winding portions 122 of the corresponding pair of the junction terminals 123, and the other end that is to be wound on the other one of the coil winding portions 122 of the corresponding pair of the junction terminals 123.
  • the base 13 includes a base body 131 for accommodating the electromagnet block 12, a pair of common terminals 132 and two pairs of fixed contact terminals 133 inserted into the base body 131 and spaced apart from each other, and two pairs of coil terminals 134 connected respectively and electrically to the junction terminals 123.
  • An armature block 135 is connected electrically to the common terminals 132, and is supported pivotally by the electromagnet block 12.
  • the armature block 135 When the armature block 135 is affected by an electromagnetic field generated by the electromagnet block 12, the armature block 135 is brought into contact with the left fixed contact terminals 133, so as to establish electrical connection between the common terminals 132 and the left fixed contact terminals 133 while breaking electrical connection between the common terminals 132 and the right fixed contact terminals 133.
  • the electromagnetic relay 1 can serve as a switch unit.
  • the size of the base body 131 is relatively large in order to accommodate the entire electromagnet block 12.
  • the junction terminals 123 since there is no mechanism for fixing the electromagnet block 12 in the base body 131, it is difficult to connect the junction terminals 123 accurately to the coil terminals 134duringassembly.
  • thecommon, fixedcontact, and coil terminals 132, 133, 134 are manually welded on both sides of the base body 131, so that the electromagnetic relay 1 cannot be fabricated at a high rate.
  • an object of the present invention is to provide an electromagnetic relay that is easy to assemble and that can be fabricated at a high rate.
  • an electromagnetic relay comprises a casing, and a relay core member that is sealed in the casing, and that includes an electromagnetic unit and a terminal unit.
  • the electromagnetic unit is adapted for generating an electromagnetic field, and includes a spool frame set that includes a pair of opposite first sides and a pair of opposite second sides, a coil unit wound on the spool frame set, and a pair of coil winding pins.
  • Each of the coil winding pins has a conductive portion exposed from one of the first sides, and a coil winding portion extending along one of the second sides.
  • the spool frame set further includes an engagement portion.
  • the terminal unit includes an engaging block including an engagement portion connected to the engagement portion of the spool frame set of the electromagnetic unit for preventing separation of the terminal unit from the electromagnetic unit, a terminal set exposed from the casing, and an armature component being affected by the electromagnetic field generated by the electromagnetic unit and serving as a switch mechanism by cooperating with the terminal set.
  • a method for assembling an electromagnetic relay that includes a casing, an electromagnetic unit, and a terminal unit.
  • the electromagnetic unit includes a spool frame set, a coil unit, and a pair of coil winding pins.
  • the terminal unit includes an engaging block, a terminal set embedded in the engaging block, and an armature component being affected by an electromagnetic field generated by the electromagnetic unit and serving as a switch mechanism by cooperating with the terminal set.
  • the method includes the following steps of:
  • an electromagnetic relay of the preferred embodiment of this invention includes a casing 2 and a relay core member including an electromagnetic unit 3 and a terminal unit 4.
  • the casing 2 includes an upper casing body 21 and a bottom casing body 22 that are connected to each other by press fitting.
  • the electromagnetic unit 3 is adapted for generating an electromagnetic field, and includes a spool frame set 31 having a pair of opposite first sides (31a) and a pair of opposite second sides (31b), a coil unit 32 being wound on the spool frame set 31 and including at least one coil 32', and a pair of coil winding pins 33.
  • the spool frame set 31 includes a spool frame 310 wound with the coil unit 32, a pair of mounting frames 311, an iron core 312 attached fixedly to the spool frame 310, and a permanent magnet 313 inserted into the spool frame 310 and disposed on a middle portion of the iron core 312.
  • Each of the mounting frames 311 is disposed at and extends along a respective one of the first sides (31a) of the spool frame set 31, and has a pair of through holes 315 formed therethrough and spaced apart from each other. Further, each of the mounting frames 311 includes an outer surface formed with a groove 314.
  • Each of the coil winding pins 33 has a conductive portion 331, and a coil winding portion 332 extending along one of the second sides (31b) of the spool frame set 31.
  • Each of the conductive portions 331 has a horizontal section being exposed from one of the mounting frames 311, and a vertical section extending into a corresponding one of the through holes 315.
  • One end of each of the conductive portions 331 is aligned with an outer surface of the corresponding mounting frame 311, and the coil winding portions 332 of the coil winding pins 33 are disposedina space 316 defined by the mounting frames 311.
  • the terminal unit 4 includes an engaging block 41 configured for accommodating the electromagnetic unit 3, a terminal set 42 inserted into the engaging block 41 and exposed from the bottom casing body 22 of the casing 2, and an armature component 43 being affected by the electromagnetic field generated by the electromagnetic unit 3 and serving as a switch mechanism by cooperating with the terminal set 42.
  • the engaging block 41 includes a pair of opposite sidewalls 414 corresponding respectively to the first sides (31a) of the spool frame set 31, a pair of opposite side surfaces 415 corresponding respectively to the second sides (31b) of the spool frame set 31, a pair of barbs 411 disposed respectively on inner surfaces of the sidewalls 414, and a top surface 412 confronting the armature component 43.
  • Each of the sidewalls 414 of the engaging block 41 is formed with a pair of notches 413, and the horizontal sections of the conductive portions 331 of the coil winding pins 33 are disposed respectively within the notches 413 (see Figure 10 ).
  • Each of the barbs 411 is configured for engaging a corresponding one of the grooves 314 for preventing separation of the terminal unit 4 from the electromagnetic unit 3.
  • the terminal set 42 includes a pair of common terminals 421, two pairs of fixed contact terminals 422, and two pairs of coil terminals 423. Each of the common, fixed contact and coil terminals 421, 422, 423 is inserted into the top surface 412, and has a portion extending along a corresponding one of the side surfaces 415.
  • the engaging block 41 further includes two pairs of first welding points 424, 425 disposed on the top surface 412 thereof, and a pair of second welding points 426 disposed within the notches 413.
  • the coil terminals 423 are respectively welded to the conductive portions 331 of the coil winding pins 33 at the second welding points 426 for forming electrical connection therebetween.
  • the armature component 43 includes a middle contact portion 431 welded to the common terminals 421 at the welding points 424, 425 and supported pivotally by the spool frame set 31, and two pairs of movable contact portions 432, 433 disposed respectively at two opposite end portions of the armature component 43.
  • a method for assembling the electromagnetic relay of the present invention includes the following steps.
  • step 51 the coil winding pins 33 are inserted through the through holes 315 in one of the mounting frames 311 of the spool frame set 31, and the conductive portions 331 of the coil winding pins 33 are exposed from the through holes 315 as shown in Figure 5 .
  • step 52 one end of the coil 32' is wound on the coil winding portion 332 of one of the coil winding pins 33, and the coil 32' is wound on the spool frame 310. Thereafter, in step 53 the other end of the coil 32' is wound on the coil winding portion 332 of the other one of the coil winding pins 33.
  • the ends of the coil 32' can be fixed on the coil winding portions 332 of the coil winding pins 33 by welding with soldering tin.
  • each of the coil winding portions 332 of the coil winding pins 33 is bent upwardly and toward the corresponding one of the second sides (31b) of the spool frame set 31 as shown in Figure 7 . Therefore, the spool frame set 31, the coil unit 32, and the coil winding pins 33 are assembled together to form the electromagnetic unit 3.
  • the terminal set 42 is formed from a plate.
  • the plate is embedded partially in the engaging block 41 such that it has a plurality of plate portions 421', 422', 423' corresponding to the terminals 421, 422, 423 (see Figure 3 ), and is then bent to form the terminals 421, 422, 423 such that upper ends of the coil terminals 423 are disposed respectively in the notches 413 in the engaging block 41.
  • step 56 the electromagnetic unit 3 is inserted into the engaging block 41, and each of the grooves 314 in the mounting frames 311 of the spool frame set 31 engages a corresponding one of the barbs 411 of the engaging block 41. Therefore, the electromagnetic unit 3 and the terminal unit 4 are assembled together to form the relay core member.
  • the coil terminals 423 of the terminal set 42 are respectively in electrical contact with the conductive portions 331 of the coil winding pins 33.
  • One end of each of the conductive portions 331 of the coil winding pins 33 is aligned with the outer surface of the corresponding one of the mounting frames 311, and is disposed within the corresponding one of the notches 413.
  • the coil winding portions 332 are disposed in the space 316 between the mounting frames 311.
  • step 57 the common terminals 421 are welded to the middle contact portion 431 of the armature component 43, and the coil terminals 423 are welded to the conductive portions 331 of the coil winding pins 33 at the welding points 424, 425, 426, respectively, using laser welding method.
  • step 58 the relay core member including the electromagnetic unit 3 and the terminal unit 4 is finally sealed in the casing 2, and the terminal set 42 is exposed from the bottom casing body 22 of the casing 2.
  • each of the right movable contact portions 432 is pivoted to a connection position, where the corresponding right movable contact portion 432 is electrically connected to a corresponding one of the fixed contact terminals 422.
  • the electromagnetic field is not generated, and therefore each of the right movable contact portions 432 of the armature component 43 is biased to a disconnection position, where the corresponding right movable contact portion 432 is separated from the corresponding one of the fixed contact terminals 422.
  • the armature component 43 serves as a switch mechanism.
  • the electromagnetic unit 3 can also include two pairs of the coil winding pins 33 (not shown), so that the electromagnetic relay of this invention serves as a double-pole-double-throw (DPDT) relay to transmit two control signals.
  • DPDT double-pole-double-throw
  • the electromagnetic relay of the present invention and the method for assembling the same have the following advantages.
  • Second, the welding points 424, 425, 426 can be formed using laser welding method, such that the manufacturing process of the electromagnetic relay is relatively simple.
  • each of the barbs 411 engages a corresponding one of the grooves 314 for preventing separation of the terminal unit 4 from the electromagnetic unit 3, so that the coil terminals 423 can be connected accurately to the coil winding pins 33 during assembly of the electromagnetic relay. Therefore, an automated manufacturing process can be utilized for the electromagnetic relay of the present invention.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
EP20090160229 2009-05-14 2009-05-14 Elektromagnetisches Relais und Montageverfahren dafür Not-in-force EP2251886B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20090160229 EP2251886B1 (de) 2009-05-14 2009-05-14 Elektromagnetisches Relais und Montageverfahren dafür

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20090160229 EP2251886B1 (de) 2009-05-14 2009-05-14 Elektromagnetisches Relais und Montageverfahren dafür

Publications (2)

Publication Number Publication Date
EP2251886A1 true EP2251886A1 (de) 2010-11-17
EP2251886B1 EP2251886B1 (de) 2014-04-09

Family

ID=41066466

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090160229 Not-in-force EP2251886B1 (de) 2009-05-14 2009-05-14 Elektromagnetisches Relais und Montageverfahren dafür

Country Status (1)

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EP (1) EP2251886B1 (de)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0142061A1 (de) * 1983-10-20 1985-05-22 Siemens Aktiengesellschaft Elektromagnetische Relais und Verfahren zu dessen Herstellung
WO1988010505A1 (en) * 1987-06-16 1988-12-29 Ped Limited Improvements in and relating to electrical components
EP0313385A2 (de) 1987-10-22 1989-04-26 Nec Corporation Elektromagnetisches Relais
EP0613163A2 (de) * 1993-02-24 1994-08-31 Omron Corporation Elektromagnetisches Relais
EP0720194A1 (de) 1993-09-17 1996-07-03 Omron Corporation Elektromagnetisches relais und sein verfahren
EP1164613A1 (de) * 1999-03-05 2001-12-19 Omron Corporation Elektromagnetisches relais
EP1246214A2 (de) * 2001-03-26 2002-10-02 Takamisawa Electric Co., Ltd. Elektromagnetisches Relais
EP1916688A1 (de) * 2005-08-12 2008-04-30 Omron Corporation Relais

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0142061A1 (de) * 1983-10-20 1985-05-22 Siemens Aktiengesellschaft Elektromagnetische Relais und Verfahren zu dessen Herstellung
WO1988010505A1 (en) * 1987-06-16 1988-12-29 Ped Limited Improvements in and relating to electrical components
EP0313385A2 (de) 1987-10-22 1989-04-26 Nec Corporation Elektromagnetisches Relais
EP0613163A2 (de) * 1993-02-24 1994-08-31 Omron Corporation Elektromagnetisches Relais
EP0720194A1 (de) 1993-09-17 1996-07-03 Omron Corporation Elektromagnetisches relais und sein verfahren
EP1164613A1 (de) * 1999-03-05 2001-12-19 Omron Corporation Elektromagnetisches relais
EP1246214A2 (de) * 2001-03-26 2002-10-02 Takamisawa Electric Co., Ltd. Elektromagnetisches Relais
EP1916688A1 (de) * 2005-08-12 2008-04-30 Omron Corporation Relais

Also Published As

Publication number Publication date
EP2251886B1 (de) 2014-04-09

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