US3501720A - Miniature relay for use in printed circuits - Google Patents

Miniature relay for use in printed circuits Download PDF

Info

Publication number
US3501720A
US3501720A US774590A US3501720DA US3501720A US 3501720 A US3501720 A US 3501720A US 774590 A US774590 A US 774590A US 3501720D A US3501720D A US 3501720DA US 3501720 A US3501720 A US 3501720A
Authority
US
United States
Prior art keywords
contact
relay
contact springs
springs
armature
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.)
Expired - Lifetime
Application number
US774590A
Other languages
English (en)
Inventor
Walter Franz Josef Mathys
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.)
Alcatel Lucent NV
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of US3501720A publication Critical patent/US3501720A/en
Anticipated expiration legal-status Critical
Assigned to ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTERDAM, THE NETHERLANDS, A CORP OF THE NETHERLANDS reassignment ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTERDAM, THE NETHERLANDS, A CORP OF THE NETHERLANDS ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: INTERNATIONAL STANDARD ELECTRIC CORPORATION, A CORP OF DE
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • H01H51/02—Non-polarised relays
    • H01H51/04—Non-polarised relays with single armature; with single set of ganged armatures
    • H01H51/06—Armature is movable between two limit positions of rest and is moved in one direction due to energisation of an electromagnet and after the electromagnet is de-energised is returned by energy stored during the movement in the first direction, e.g. by using a spring, by using a permanent magnet, by gravity

Definitions

  • a miniature relay is provided for use in restricted spaces, such as that between printed circuit boards. Steps are provided as integral parts of the relay to support contact elemerits and impart elastic deformation to the contact elements in such a way that good electrical connections can be established between contacts.
  • the present invention relates to a miniature relay adapted to be used in printed circuits.
  • the invention provides a miniature relay which is characterized by comprising a coil former carrying the entire relay structure and serving as a seat for several sets of contact springs, arranged side by side, both at the terminal-side'and at the contact-side, the seat at the contact-side being such that the relative position of the contact springs of each contact set is exactly determined without the need of an individual adjustment or a preceding pre-loading of contact springs.
  • said seat at the contact side is provided with steps, the individual steps being shifted with respect to the seat at the terminal side in such manner that by assembling the relay an elastic deformation of all the contact springs occurs.
  • the individual contact springs are pressed on the one hand with the desired pressure against the corresponding steps and on the other hand the desired contact pressure is warranted between two contact springs of one contact.
  • FIGURE 1 represents a longitudinal sectional view taken in parallel to the longitudinal axis of the coil.
  • FIGURES 2-4 represent external views of the complete relay package.
  • the relay comprises a coil former 1, a coil 2, an E- shaped magnetic core 3, a U-shaped armature 4, the open side of which is closed by a riveted flat resilient member 14 of non magnetizable material having four fixing bores, and a contact assembly including the contact springs 10, 11 and 12 for each switching-over contact, the pressing plate 5 and the insulating separators 6 and 7.
  • the coil former 1 is so arranged that it can carry the entire relay structure.
  • said coil former is provided at the one side with a block-shaped widening of the spool flange, said widening having four adjacent bores 15 and a seat face 16 used as a seat for the contact assembly at the terminal side.
  • the spool flange at the other end of the coil former is also provided with a widening having the seat faces 17 and 18, a guiding slot 19 for the actuating card 8 which slot is divided into two portions at the side adjacent the armature, and two bores into which the tubular coil terminals 13 are pressed and fixed by turning over.
  • the coil former 1 is also provided with a rectangular aperture adapted to receive the intermediate magnet limb of the E-shaped core 3, said aperture being such that the core received therein is fixed by a slight squeezing owing to the elastic deformation of the coil former whereby the latter is stiffened.
  • the seat face 17 used as a seat for the break-contact springs 10 at the contact side is shifted with respect to the seat face 16 at the terminal side in such manner that by mounting the contact assembly onto the relay an elastic deformation of the break-contact springs 10 results which springs were not bent before the mounting.
  • the switching-over contact springs 11, which likewise were not bent before mounting are also deformed via the contact knobs.
  • the difference in height between the seat face 16 and the seat face 17 and the thickness of the insulating separator 7 are chosen with respect to the characteristics of the material of the contact springs 10 and 11 in such manner that by the assembly operation the desired contact pressure results between the contact knobs of the break-contact and the switching-over contact springs.
  • the switching-over contact springs 11 are operated by the armature 4 via the card 8. Said card slides in a slot 19 which extends at the contact side about over the whole width of the coil former and which slot is divided into two parts at the armature side. In this manner said card cannot get lost when the contact assembly is in place.
  • the card is provided with one seat face at the contact side for all theswitching-over contact springs, but it is provided with two projecting portions at the armature side which pass between the intermediate magnet limb and the outer magnet limbs of the E-shaped core.
  • the seat face 18 biases the make-contact springs 12 of which neither is bent before assembly.
  • the position of the seat face and the thickness of the insulating separator are so chosen that the rest position of the contact springs 12 is positively determined and that at the end of the raising of the card 8 by actuating the armature 4 the desired contact pressure results between the contact knobs of the contact springs 11 and 12.
  • All the contact springs are provided with two contact knobs for each contact.
  • the switching-over contact spring 11 is divided into two parts over its entire free length like a fork, each part being provided with one contact knob.
  • the contact springs 10, 11 and 12 are provided with narrow terminal lugs 20, 21, 22, respectively, bent over at right angles.
  • the terminal lugs 20 of the break-contact springs 10 are bent downwards outside of the insulating separators 6 and 7 and the pressing plate 5.
  • the terminal lugs 21 of the switching-over contact springs 11 pass through coaxial bores 24 and 25 in the insulating separator 7 and in the pressing plate 5 and pass also through a bore in the make-contact spring 12 which bore has an adequate diameter for insulation purposes.
  • the terminal lugs 22 of the make-contact spring 12 pass through bores 26 in the pressing plate 5. The width of said lugs is so chosen that they fit substantially without clearance in the corresponding bores and act as torsion locking.
  • the pressing plate 5 one main face of which is used as a seat face for the relay has in its other main face four tubular projecting portions used as insulation between the four screws 9 and the corresponding contact springs.
  • the corresponding bores in the contact springs 10, 11 and 12 and in the insulating separators are so dimensioned that a press fit results between the contact springs and the insulating separators and said tubular portions. Therefore the entire contact assembly can be preassembled without using screws or the ilke. Since a certain length of the tubular portions still projects after the preassembly operation of the contact assembly and since the bores 15 in the coil former are suitably dimensioned, the entire preassembled contact assembly can be pressed upon the wound coil former, still without using screws or the like.
  • the final fixation of the contact assembly onto the coil former is made by said four screws 9 screwed into threaded bores 23 in the core 3. Said four screws are also threaded into suitably chosen bores of the fiat resilient member 14 riveted to the armature so that for fixing the armature no additional elements are needed.
  • the bores in said flat member are so dimensioned that their diameter corresponds to the core diameter of said screws.
  • the projecting ends of the two outer screws are provided, after a U-shaped armature 4 has been put in place, with undercut nuts of thermoplastic material.
  • the undercut portion engages with clearance into a semicircular notched portion at the outer ends of the two limbs of the armature, and the not undercut portion holds the armature with clearance in this position.
  • two projecting lugs one On each side of the spool flange on the contact side, are provided. In this case the armature is held in its rest position only by the action of the contact springs.
  • the coil terminals are formed by small tubes so that the terminal wires of the coil may be pushed through said tubes and may be soldered simultaneously with the relay into a printed circuit.
  • the mutual distances between the coil terminals and the terminal lugs of the contact springs are such that the relay can be mounted in a printed circuit having a standard raster.
  • a practical embodiment of the relay according to the invention has a volume less than 7.5 com. and a height above the printed card of only 12 mm. It has four switching-over contacts, each contact spring being provided with two contact knobs and the contact pressure of both the break-contact and the make-contact being at least 5 grammes per contact knob. With 90 to 140 ampere-turns the rise-times are about 4 to 7 ms. and the fall-times about 2 to 2.5 ms.
  • a miniature relay comprising:
  • said coil former including a first seat face integral therewith against which the terminal ends of sets of said contact springs are securely fastened with insulating material secured between the terminal ends,
  • said coil former including additional seat faces integral therewith providing a plurality of stops against which the contact ends of said sets of contact springs are rested
  • said first seat face and said steps being oifset from each other to cause the terminal end of each spring to be offset with respect to the step against which its contact end is rested
  • each of said sets of contact springs including a set of switching-over contact springs
  • each contact spring is provided with two contact knobs
  • the switching-over contact spring is divided forkwise over a portion of its length into two portions each of which carries one contact knob by means of which a good contact is secured for both contact knobs.
  • a relay according to claim 1 in which: terminal lugs for the contacts and for the coil have such mutual distances that the relay can be fitted into a standard raster for printed circuits.
  • coil terminals are formed by small tubes so that the terminal wires of the coil may be carried through said tubes and may be soldered simultaneously with the relay into a printed circuit.
  • said contact springs are held in their position by a screw threaded into the relay core to exert a torsion lock on the contact springs.
  • said torsion lock is increased by rectangularly bending terminal lugs of the individual contact springs and by pushing the terminal lugs through bores of an insulating body.
  • the said insulating body on which the contact springs of make-contacts lie directly and other contact springs lie indirectly via insulating separators, is provided with a number of tubular projecting portions corresponding in number to the number of switching-over contact sets,
  • said projecting portions used as insulation between said screws and said contact springs are so dimensioned that a press fit results between said tubular portions and the required insulating separators and said contact springs, respectively, and
  • the entire contact spring set may be pre-assembled without the aid of addiitonal connection means, further in that the said tubular portions have a length which is sufficient to press said portions with the mounted contact spring sets into corresponding bores in said terminal-side seat face of the coil former by which pressing operation the entire relay may be preassembled without the aid of additional connecting means.
  • the coil former comprises an E-shaped core.
  • the said coil former is formed in such a manner that the intermediate limb of said core may be inserted into a wound coil and is fixed in this position by preloading owing to the elastic deformation of the coil former.
  • the relay includes a U-shaped armature of magnetizable material.
  • a relay according to claim 10 in which:
  • the two limbs of the armature are connected by a fastening spring of non-magnetizable material provided with bores.
  • the said fastening spring is provided with bores into which the screws used to fix the contacts may be threaded so that said spring is fixed on the core, the diameter of said bores being nearly equal to the core diameter of said screws.
  • a relay according to claim 10 in which:
  • a projecting lug is placed on that front side of a spool flange which is remote from the armature fixation, said lug being used to limit the armature motion of the de-energized relay.
  • a relay according to claim 10 in which:
  • the said armature operates the switching-over contact springs via a flat plate of insulating material being held in a sliding manner in the coil former.
  • the said plate of insulating material is provided at the contact side with one seat face for all the switchingover contact springs, and
  • said plate is provided at the armature side with two small projections projecting through the space between the limbs of the E-shaped core and through two corresponding slots in the coil former, whereby said plate cannot get lost when the contact springs sets are mounted.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Basic Packing Technique (AREA)
US774590A 1965-12-28 1968-11-05 Miniature relay for use in printed circuits Expired - Lifetime US3501720A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1796365A CH452704A (de) 1965-12-28 1965-12-28 Miniaturrelais

Publications (1)

Publication Number Publication Date
US3501720A true US3501720A (en) 1970-03-17

Family

ID=4429413

Family Applications (1)

Application Number Title Priority Date Filing Date
US774590A Expired - Lifetime US3501720A (en) 1965-12-28 1968-11-05 Miniature relay for use in printed circuits

Country Status (11)

Country Link
US (1) US3501720A (uk)
AT (1) AT289237B (uk)
BE (1) BE691853A (uk)
CH (1) CH452704A (uk)
DE (1) DE1564220B1 (uk)
DK (1) DK118729B (uk)
ES (1) ES335046A1 (uk)
FR (1) FR1506144A (uk)
GB (1) GB1123100A (uk)
NL (1) NL157142B (uk)
SE (1) SE324408B (uk)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4124832A (en) * 1976-02-20 1978-11-07 Siemens Aktiengesellschaft Electromagnetic relay
FR2412934A1 (fr) * 1977-12-23 1979-07-20 Lucas Industries Ltd Relais electromagnetique
US4216453A (en) * 1976-12-22 1980-08-05 Industria Politecnica Meridionale S.P.A. Laminated spring for relays and three-way switches
US4264885A (en) * 1978-03-31 1981-04-28 Kabushiki Kaisha Tokai Rika Deuki Seisakusho Electromagnetic relay
EP0319478A2 (de) * 1987-11-30 1989-06-07 Alcatel STR AG Leiterplattenrelais
US20140368302A1 (en) * 2013-06-14 2014-12-18 Shanghai Wanjia Precision Components Co.,Ltd Relay contact system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA726380B (en) * 1971-09-29 1973-06-27 Cav Ltd Electro-magnetic relays
JPS5814440A (ja) * 1981-07-20 1983-01-27 株式会社高見澤電機製作所 電磁継電器

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1812545A (en) * 1928-08-24 1931-06-30 Ericsson Telefon Ab L M Electromagnetic relay
US2454060A (en) * 1944-09-16 1948-11-16 Bendix Aviat Corp Relay
DE1015537B (de) * 1952-05-24 1957-09-12 Western Electric Co Elektromagnetisches Relais
US3278872A (en) * 1964-12-17 1966-10-11 Gen Signal Corp Electromagnetic relay with simplified structure
US3308407A (en) * 1965-11-17 1967-03-07 Mallory & Co Inc P R Compact electromagnetic relay

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB894463A (en) * 1959-07-21 1962-04-26 Zd Y Jana Svermy Improvements in and relating to polarized electromagnetic relays

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1812545A (en) * 1928-08-24 1931-06-30 Ericsson Telefon Ab L M Electromagnetic relay
US2454060A (en) * 1944-09-16 1948-11-16 Bendix Aviat Corp Relay
DE1015537B (de) * 1952-05-24 1957-09-12 Western Electric Co Elektromagnetisches Relais
US3278872A (en) * 1964-12-17 1966-10-11 Gen Signal Corp Electromagnetic relay with simplified structure
US3308407A (en) * 1965-11-17 1967-03-07 Mallory & Co Inc P R Compact electromagnetic relay

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4124832A (en) * 1976-02-20 1978-11-07 Siemens Aktiengesellschaft Electromagnetic relay
US4216453A (en) * 1976-12-22 1980-08-05 Industria Politecnica Meridionale S.P.A. Laminated spring for relays and three-way switches
FR2412934A1 (fr) * 1977-12-23 1979-07-20 Lucas Industries Ltd Relais electromagnetique
US4264885A (en) * 1978-03-31 1981-04-28 Kabushiki Kaisha Tokai Rika Deuki Seisakusho Electromagnetic relay
EP0319478A2 (de) * 1987-11-30 1989-06-07 Alcatel STR AG Leiterplattenrelais
EP0319478A3 (en) * 1987-11-30 1990-04-25 Standard Telephon Und Radio Ag Printed circuit board relay
US20140368302A1 (en) * 2013-06-14 2014-12-18 Shanghai Wanjia Precision Components Co.,Ltd Relay contact system

Also Published As

Publication number Publication date
SE324408B (uk) 1970-06-01
ES335046A1 (es) 1967-11-16
DE1564220B1 (de) 1972-01-13
DK118729B (da) 1970-09-28
BE691853A (uk) 1967-06-28
CH452704A (de) 1968-03-15
GB1123100A (en) 1968-08-14
FR1506144A (fr) 1967-12-15
AT289237B (de) 1971-04-13
NL157142B (nl) 1978-06-15
NL6618226A (uk) 1967-06-29

Similar Documents

Publication Publication Date Title
US5160910A (en) Electromagnetic relay
US4101856A (en) Electrical switching relay construction and housing therefor
US3501720A (en) Miniature relay for use in printed circuits
US4346359A (en) Relay
US2957961A (en) Switching device
US3359395A (en) Reed relay termingal construction
US3848206A (en) Electromagnetic solenoid with improved contact antibounce means
US3873952A (en) Electromagnetic contactor
US3142735A (en) Multiple leaf spring electromagnetic switch
US2904653A (en) Relays
EP0062332A2 (en) Electromagnetic relay
US3474367A (en) Relay motor
US3089010A (en) Switching assembly
US3406361A (en) Electromagnetic relay having parts retained by a one-piece spring clip which also provides armature bias
US3188424A (en) Relay construction
US3501719A (en) Relay construction
US3525060A (en) Reed contacts operable by magnetic forces
US3239727A (en) Electromagnetic switching device
GB1476960A (en) Electromagnetic relay
JP4131111B2 (ja) 電磁石装置
US3277409A (en) Electromagnetic relay assembly having a flat coil and whose armature assembly is formed with a deformable stem
US2825784A (en) Electromagnetic relay
US3118988A (en) Electromagnetic relay with conductive core and conductive housing
US2824924A (en) Multiple relay assembly
US2944195A (en) Electromagnetic actuator

Legal Events

Date Code Title Description
AS Assignment

Owner name: ALCATEL N.V., DE LAIRESSESTRAAT 153, 1075 HK AMSTE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:INTERNATIONAL STANDARD ELECTRIC CORPORATION, A CORP OF DE;REEL/FRAME:004718/0023

Effective date: 19870311