US2591684A - Electrical contact - Google Patents

Electrical contact Download PDF

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Publication number
US2591684A
US2591684A US67030A US6703048A US2591684A US 2591684 A US2591684 A US 2591684A US 67030 A US67030 A US 67030A US 6703048 A US6703048 A US 6703048A US 2591684 A US2591684 A US 2591684A
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US
United States
Prior art keywords
contact
spring
springs
backstop
assembly
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
US67030A
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English (en)
Inventor
Deakin Gerald
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.)
International Standard Electric Corp
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
Priority to US67030A priority Critical patent/US2591684A/en
Priority to FR1006992D priority patent/FR1006992A/fr
Application granted granted Critical
Publication of US2591684A publication Critical patent/US2591684A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/56—Contact spring sets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
    • H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
    • H01H2001/265—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support having special features for supporting, locating or pre-stressing the contact blade springs

Definitions

  • Thisinvention relates to contact springs and contact spring assemblies for electromagnetic, relay switching keys and similar apparatus particularly of the type used in telephone systems.
  • the contact springs have associated therewith backstops for limiting their following movement when the relay is in its energized and/or deenergized condition.
  • Such stops usually consist of detached stop members fixed or stifi enough to resist the tension of the contact springs with which they are associated.
  • the adjustment of springs with respect to such detached backstops is one of the most costly items in the assembly and adjustment of telephone relays at the present time.
  • An object of the present invention is the'provision of spring assemblies and backstops for relays and other apparatus, which require substantially no adjustment after the relay or other apparatus is assembled, and which comprise a minimum of parts.
  • a combined contact spring and backstop comprises a rigid mounting rod or pin and a flexible contact carrying spring supported from the pin which acts as a backstop and is preferably molded in an insulating supporting block.
  • the flexible springs are given an initial predetermined tension set to meet the required operating characteristics of the contact assembly.
  • Fig. 1 is a front elevation of an assembly unit of four combined contact springs and backstops moulded in a supporting insulator
  • Fig. 2 is a side elevation of the assembly of Fig. 1,
  • Fig. 3 is a side elevation of a contact spring
  • Fig. 4 is a front elevation of the contact sprin of Fig. 3, v
  • Fig. 5 is a side elevation of an armature spring
  • Fig. 6 is a side elevation of a break-beforemake contact assembly in the normal deenergized condition of the relay
  • Fig. "7 is a side elevation of the assembly of Fig. 6 in half-operated condition.
  • each combined contact spring and backstop consists of a stiff rod support I molded into an insulator block 2.
  • the lower ends of the rod supports I which may be made, for example, of phosphor bronze are squeezed into tongues 3 adapted to fit into a relay socket terminal.
  • the insulator block 2 is formed with molded studs 4 on one side and with corresponding depressions 5 on the other side which interlock with depressions and studs on adjacent blocks when the spring units are assembled on the relay.
  • Theblocks 2 may be held together and to the relay structure by spring clamps or by other suitable means. 7
  • Flexible springs 6 provided with welded contacts 1 are secured. for example, by two spotwelds B, to the rod supports I after moldings As illustrated in Figs. 3 and 4, the springs 6, which may be of phosphor'bronze, are formed with a channelled portion 9 which partially embraces the rod support I to which the spring is secured. The springs 6 are also initially formed with an angular off-set bend I0 to impart to them a predetermined tension set.
  • the armature spring units, Fig. 5, which cooperate with the combined contact springs and backstops, consist of flat ribbons of Spring metal II molded in an insulator supporting block I2 similar to the block 2 and also given an initial tension set before assembly so as to impart to them the required contact pressure when the complete contact pile-up is assembled.
  • Figs. 6 and 7 show a break-before-make contact assembly comprising two combined spring and backstop units 'I, 6 and I, 6' and an interposed spring I I adapted to be moved by an armature I3.
  • the armature spring II is shown in its unoperated condition resting against the flexible back contact spring 6.
  • the tension offsets previously mentioned cause the armature spring II to force the flexible spring a short distance away from the rod support I which acts as a backstop.
  • Fig. 7 shows the armature spring I I midway between the front and back contacts in the half-operated condition. In this position there is a clear and ample airgap on both sides of the armature spring contacts.
  • the armature spring II When the armature spring II is fully operated, it again assumes a position similar to that of Fig. 6 but on the other side.
  • a combined contact spring and backstop assembly comprising a mounting pin and a flexible contact carrying spring secured to said pin in such position that said pin acts as a backstop for said contact spring.
  • a contact spring assembly comprising an insulating supporting member, a rigid mounting pin, means for securing said pin in said supporting member, and a flexible contact carrying spring secured to said mounting pin intermediate its ends in such position that an extended portion of the surface of said pinaots as a backstop for said contact spring.
  • -A contact spring assembly comprising an insulating supporting means, arigid mounting pin, a first spring secured to said mounting pin in such position that a portion of its length in the unoperated condition of said spring engages the surface of said pin, a first contact mounted on said spring, a second spring, a sec- 7 0nd. contact mounted on said second spring and means for mounting said pin and said second spring in spaced relation in said insulating supporting means with said first and second contacts in engageablerelation.
  • a contact assembly comprising a first combined mounting pin and backstop and a first flexible contact-carrying spring secured thereto, a second combined mounting pin and backstop and a second contact-carrying spring secured thereto, a third flexible contact-carrying spring mounted between said first and second springs, said three springs each being formed with an angular ofiset bend in order to impart to them predetermined tension sets to provide a breakbefore-make contact operation.
  • a contact assembly comprising a first combined mounting pin and backstop and a first flexible contact-carrying spring secured thereto, a second combined mounting pin and backstop and a second contact-carrying spring secured thereto, a third flexible contact-carrying spring mounted between said first and second springs,
  • said three springs each being formed withan angular ofiset bend in order to impart to them predetermined tension sets to provide a makebefore-break contact operation.
  • a contact spring assembly comprising an insulating supporting member, a rigid mounting pin, means for securing said pin in said supporting member, and a flexible contact carrying spring secured to said mounting pin intermediate its ends in such position that a part of the surface of said pin acts as a backstop for said contact spring, said contact carrying spring being formed with a channel shaped portion over the area where it is secured to said pin and being initially formed intermediate its ends with an angular offset bend in order to impart to .it a predetermined tension set.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
US67030A 1948-12-23 1948-12-23 Electrical contact Expired - Lifetime US2591684A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US67030A US2591684A (en) 1948-12-23 1948-12-23 Electrical contact
FR1006992D FR1006992A (fr) 1948-12-23 1949-12-22 Dispositif de contacts électriques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US67030A US2591684A (en) 1948-12-23 1948-12-23 Electrical contact

Publications (1)

Publication Number Publication Date
US2591684A true US2591684A (en) 1952-04-08

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ID=22073273

Family Applications (1)

Application Number Title Priority Date Filing Date
US67030A Expired - Lifetime US2591684A (en) 1948-12-23 1948-12-23 Electrical contact

Country Status (2)

Country Link
US (1) US2591684A (fr)
FR (1) FR1006992A (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2831939A (en) * 1954-04-07 1958-04-22 Cie Ind Des Telephones Electromechanical relay
US2847522A (en) * 1955-07-27 1958-08-12 Jr James L Bernard Electric switches
US2856483A (en) * 1955-10-07 1958-10-14 Clare & Co C P Polarized relay
US2879345A (en) * 1956-02-01 1959-03-24 Jr Donald P Mossman Selective switching apparatus
US3015876A (en) * 1957-06-18 1962-01-09 Gen Electric Method of making resilient switch contacts
US3194931A (en) * 1961-05-10 1965-07-13 American Radiator & Standard Improved block-electrical brush assembly
US3223809A (en) * 1963-11-04 1965-12-14 Portage Electric Prod Inc Mounting contact strip means for thermostatic switches
US3255334A (en) * 1962-08-20 1966-06-07 Siemens Ag Contact spring set with self-retaining contact elements
US3274354A (en) * 1964-07-15 1966-09-20 Master Specialties Company Switch mechanism
US3313904A (en) * 1964-03-14 1967-04-11 Henri L Chambaut Contact system
US3390243A (en) * 1967-04-17 1968-06-25 Controls Co Of America Multiple switch assembly
US3433917A (en) * 1967-10-25 1969-03-18 Westinghouse Air Brake Co Fail-safe vital relay contact arrangement
US3622729A (en) * 1969-07-25 1971-11-23 Nippon Gakki Seizo Hamamatsu S Key switch device for electronic musical instruments
US3651294A (en) * 1969-03-10 1972-03-21 Siemens Ag Contact assembly with an unchangeable switching state at the instant of welding
NL7702659A (nl) * 1976-03-15 1977-09-19 Texas Instruments Inc Elektrische thermostaat-schakelaar.
US4143254A (en) * 1977-04-25 1979-03-06 Heyrana Pablo M Waterproof multiple electrical switch assembly
EP1315189A2 (fr) * 2001-11-27 2003-05-28 Matsushita Electric Works (Europe) Aktiengesellschaft Disposition de contacts pour un relais

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3202579A1 (de) * 1982-01-27 1983-08-04 Siemens AG, 1000 Berlin und 8000 München Relais mit brueckenkontaktanordnung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1921430A (en) * 1930-06-19 1933-08-08 Bell Telephone Labor Inc Electromagnetic switching device
US2114895A (en) * 1937-01-07 1938-04-19 Union Switch & Signal Co Thermal relay
US2339434A (en) * 1941-11-28 1944-01-18 Kellogg Switchboard & Supply Contact-spring stack-up
US2372594A (en) * 1942-12-26 1945-03-27 Union Switch & Signal Co Mounting for oscillatory members
US2388116A (en) * 1941-06-21 1945-10-30 Henry H Bruderlin Signal translating device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1921430A (en) * 1930-06-19 1933-08-08 Bell Telephone Labor Inc Electromagnetic switching device
US2114895A (en) * 1937-01-07 1938-04-19 Union Switch & Signal Co Thermal relay
US2388116A (en) * 1941-06-21 1945-10-30 Henry H Bruderlin Signal translating device
US2339434A (en) * 1941-11-28 1944-01-18 Kellogg Switchboard & Supply Contact-spring stack-up
US2372594A (en) * 1942-12-26 1945-03-27 Union Switch & Signal Co Mounting for oscillatory members

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2831939A (en) * 1954-04-07 1958-04-22 Cie Ind Des Telephones Electromechanical relay
US2847522A (en) * 1955-07-27 1958-08-12 Jr James L Bernard Electric switches
US2856483A (en) * 1955-10-07 1958-10-14 Clare & Co C P Polarized relay
US2879345A (en) * 1956-02-01 1959-03-24 Jr Donald P Mossman Selective switching apparatus
US3015876A (en) * 1957-06-18 1962-01-09 Gen Electric Method of making resilient switch contacts
US3194931A (en) * 1961-05-10 1965-07-13 American Radiator & Standard Improved block-electrical brush assembly
US3255334A (en) * 1962-08-20 1966-06-07 Siemens Ag Contact spring set with self-retaining contact elements
US3223809A (en) * 1963-11-04 1965-12-14 Portage Electric Prod Inc Mounting contact strip means for thermostatic switches
US3313904A (en) * 1964-03-14 1967-04-11 Henri L Chambaut Contact system
US3274354A (en) * 1964-07-15 1966-09-20 Master Specialties Company Switch mechanism
US3390243A (en) * 1967-04-17 1968-06-25 Controls Co Of America Multiple switch assembly
US3433917A (en) * 1967-10-25 1969-03-18 Westinghouse Air Brake Co Fail-safe vital relay contact arrangement
US3651294A (en) * 1969-03-10 1972-03-21 Siemens Ag Contact assembly with an unchangeable switching state at the instant of welding
US3622729A (en) * 1969-07-25 1971-11-23 Nippon Gakki Seizo Hamamatsu S Key switch device for electronic musical instruments
NL7702659A (nl) * 1976-03-15 1977-09-19 Texas Instruments Inc Elektrische thermostaat-schakelaar.
US4101861A (en) * 1976-03-15 1978-07-18 Texas Instruments Incorporated Thermostatic switch and method of assembly
US4143254A (en) * 1977-04-25 1979-03-06 Heyrana Pablo M Waterproof multiple electrical switch assembly
EP1315189A2 (fr) * 2001-11-27 2003-05-28 Matsushita Electric Works (Europe) Aktiengesellschaft Disposition de contacts pour un relais
EP1315189A3 (fr) * 2001-11-27 2005-02-16 Matsushita Electric Works (Europe) Aktiengesellschaft Disposition de contacts pour un relais

Also Published As

Publication number Publication date
FR1006992A (fr) 1952-04-29

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