US3705966A - Adjustable relay contact - Google Patents

Adjustable relay contact Download PDF

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Publication number
US3705966A
US3705966A US135149A US3705966DA US3705966A US 3705966 A US3705966 A US 3705966A US 135149 A US135149 A US 135149A US 3705966D A US3705966D A US 3705966DA US 3705966 A US3705966 A US 3705966A
Authority
US
United States
Prior art keywords
contact
adjustment member
break
spring adjustment
operating
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
US135149A
Other languages
English (en)
Inventor
Karl Heinz Bergmann
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.)
Deutsche Fernsprecher GmbH
Original Assignee
Deutsche Fernsprecher GmbH
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
Priority claimed from DE19702018627 external-priority patent/DE2018627C/de
Application filed by Deutsche Fernsprecher GmbH filed Critical Deutsche Fernsprecher GmbH
Application granted granted Critical
Publication of US3705966A publication Critical patent/US3705966A/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
    • 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
    • H01H1/34—Contacts characterised by the manner in which co-operating contacts engage by abutting with provision for adjusting position of contact relative to its co-operating contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements

Definitions

  • the purpose of the invention is to provide a relay and a method of adjustment such as to make the adjustment thereof simple and accurate.
  • Such a relay can be adjusted, in accordance with the method here proposed, by fitting the spring adjustment member to the break-contact holder, by using a regulating device to cause the adjustment member to pivot towards the break-contact holder until the operating contact touches the break contact and then, again with the aid of the regulating device, by causing the spring adjustment member to continue its pivoting movement, to ensure contact pressure between the break contact and the operating contact.
  • the method described enables the relay described to be adjusted quickly and accurately, even by less highly trained stall.
  • the labour costs involved in manufacture are thus considerably lower than with the relays known hitherto.
  • FIG. 1 is a side elevation of the relay conforming to the invention.
  • FIG. 2 shows the spring adjustment member seen from above.
  • FIG. 1 shows a relay incorporating a contact holder 1, with four facing pairs of make and break contacts 2.
  • the elongated parts 3 of the contact holder 1 form the outer arms of an E-shaped magnetic circuit, the middle arm of which serves as a coil core.
  • a plastic component acting as a spring adjustment member 4 below those parts 3' which constitute the outer arms of the magnetic circuit is a plastic component acting as a spring adjustment member 4.
  • Molded into this spring adjustment member 4 are four operating springs 5, lying in one and the same plane, with their free ends 6 extended between the facing pairs of fixed contacts 2.
  • An operating contact 7, is provided on the free ends of the operating springs 5, between the fixed contacts.
  • the spring adjustment member 4 is secured by two self-tapping screws 8, to the drilled elongated outer arms of the magnetic circuit.
  • Two protruberances 9, on the spring adjustment member 4 bear against the outer arms 3 of the ,E-shaped magnetic circuit and act as a fulcrum for the adjustment member.
  • the latter also has two small projections 10, which engage in holes 11, containing small silicone rubber cushions 12, to provide resilience-
  • FIG. 2 shows the spring adjustment member 4 as seen from above.
  • At the end remote from the operating springs 5 are the-elongated prot-uberances 9.
  • the holes 13 entered by the self-tapping screws 8 lie between the said protuberances and projections.
  • the spring adjustment member 4 is turned about its pivot, thereby compressing the small cushioning members.
  • the spring adjustment member 4 is first placed against the elongated parts used as the outer arms of the magnetic circuit. Then the screws 8 are fitted through the holes in the elongated parts 3 and screwed into the holes 13 in the spring adjustment member 4. This pulls the spring adjustment member initially towards the elongated part 3 of the contact holder 1 and then swings it about the elongated protuberances 9. The screws 8 are tightened until the operating contacts 7 touch the upper break contacts. If a source of current and an ammeter be joined in series to the break contact and operating contact, the establishment of connection between the operating contact 7 and the break contact 2 can be readily confirmed by reading on the ammeter the current that starts to flow as the contacts touch. Then, to obtain a given contact pressure, the screws 8 are further turned through a given angle, so that the spring adjustment member 4 likewise turns through a given angle, requisite to the production of a given contact pressure.
  • the process of adjustment can be carried out rapidly, even by less highly trained staff, the precision of adjustment still being greater than when contacts are adjusted by bending the individual springs.
  • the adjusting device and method of adjustment described are particularly suitable for electro-magnetic relays, they can equally well be applied to other relays in which the operating contacts are mounted on contact springs or the like.
  • a relay comprising at least one break-contact fitted to a break-contact holder and with at least one operating contact mounted on an operating spring anchored to a spring adjustment member by which the operating spring is pivotable; said spring adjustment member being pivotable by means of a regulating device including at least one screw-like means extending through said break-contact holder and engaging said spring adjustment member,
  • said resilient cushioning means comprise members which; lie facing the end of said spring adjustment member.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Breakers (AREA)
  • Springs (AREA)
US135149A 1970-04-18 1971-04-19 Adjustable relay contact Expired - Lifetime US3705966A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702018627 DE2018627C (de) 1970-04-18 Relais und Verfahren zum Justieren seiner Kontaktfedern

Publications (1)

Publication Number Publication Date
US3705966A true US3705966A (en) 1972-12-12

Family

ID=5768405

Family Applications (1)

Application Number Title Priority Date Filing Date
US135149A Expired - Lifetime US3705966A (en) 1970-04-18 1971-04-19 Adjustable relay contact

Country Status (3)

Country Link
US (1) US3705966A (enrdf_load_stackoverflow)
FR (1) FR2086171A1 (enrdf_load_stackoverflow)
GB (1) GB1341633A (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH595695A5 (enrdf_load_stackoverflow) * 1976-01-16 1978-02-28 Elesta Ag Elektronik

Also Published As

Publication number Publication date
DE2018627B2 (de) 1972-08-17
GB1341633A (en) 1973-12-25
DE2018627A1 (de) 1971-11-18
FR2086171A1 (enrdf_load_stackoverflow) 1971-12-31

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