US2588534A - Electromagnetic relay with adjustable lever-relation - Google Patents

Electromagnetic relay with adjustable lever-relation Download PDF

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Publication number
US2588534A
US2588534A US51445A US5144548A US2588534A US 2588534 A US2588534 A US 2588534A US 51445 A US51445 A US 51445A US 5144548 A US5144548 A US 5144548A US 2588534 A US2588534 A US 2588534A
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US
United States
Prior art keywords
lever
armature
relation
stud
relay
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
US51445A
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English (en)
Inventor
Jorgensen Anders Ossian
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of US2588534A publication Critical patent/US2588534A/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
    • H01H43/00—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed
    • H01H43/30—Time or time-programme switches providing a choice of time-intervals for executing one or more switching actions and automatically terminating their operations after the programme is completed with timing of actuation of contacts due to thermal action
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/20—Control lever and linkage systems
    • Y10T74/20576—Elements
    • Y10T74/20582—Levers
    • Y10T74/206—Adjustable

Definitions

  • the present invention relates to electromagnetic relays, and refers especially to the kind known as marginal relays, i. e. such relays in which an adjustment of make-time, release time, make-current etc. may be effected.
  • Figs. 1 and 2 show graphs of the properties of a relay at varying lever-relations.
  • Fig. 3 shows a perspective view of a relay according to the invention with an adjustable lever.
  • Fig. 4 shows a detail of the lever, and
  • Fig. 5 a sliding stud for this lever.
  • Fig. 6 illustrates, by means of a side view of the relay according to Fig. 3, the movements of the armature and the lever.
  • make-time t1 varies according to Fig. 1.
  • make-time is meant the time from the moment, when the circuit to the relay is closed until a certain pair of contacts has been actuated.
  • a voltage V1 gives the curve I a voltage V2 the curve
  • the make-time t can be shortened from tit to tla at the same voltage V2. This also happens in case of makecurrent.
  • release-time t2 of the relay in function of the lever-relation f appears from Fig. 2.
  • release-time is meant the time, which passes from the moment when the current to the relay has been broken until a certain pair of contacts has been actuated.
  • shows the release-time at a voltage V1 of the relay, the curve 22 at a voltage V:
  • the adjustable lever-arrangement shown in Fig. 3 has been applied to a flat-type relay.
  • the lever arrangement can naturally also be used in case of other types of relays.
  • an armature 34 is mounted, which turns round a shaft 35.
  • is fixed to the armature 34, and overhangs the pole shoe 33.
  • a tap 50 extends laterally from 4
  • an adjustable or sliding stud 42 is arranged having a wedge-like lower end to bear on the upper arm of 4
  • the adjustment path of movement of the stud lies in a geometric plane, which passes through the axis of the fulcrum 35 of the armature and the fulcrum 38 of the lever support, Fig. 6. Since the engagement point between the stud 42 and the arm 4
  • the angle between a line through the rotating shaft 38 and the upper side of the lifting screw 40, and a line through the direction of movement of the lifting screws is arranged to be 90 when the armature is right between the extreme positions at the greatest possible lever-relation.
  • a design of the stud 42 is shown.
  • One or more spring contact sets '36 are attached to the core in a way known per se.; These spring contact sets are each actuated by The stud is inserted in a hole 52 at the end of the groove 5
  • the grooves 62 in the stud will thus be directed by the edges of the lever groove.
  • the grooves 62 are made so that a certain friction against the lever is obtained.
  • the design is so arranged, that the adjustment path of the stud on the lever 'and the upper surface of the arm 4
  • This can be made at make-position of the relay.
  • a dislocation of the adjusting stud only requires that the stroke of the armature be changed by adjusting the stop screw of the armature.
  • the stroke of the armature is continually changed with the lever-relation if the stop screw is not moved. If the adjusting stud with its adjustment path is attached to the arm 4! of .thearmature and if the stop screw of the armature is placed in the. adjusting stud similar results may be attained.
  • a magnet having a core, contact springs supported adjacent said magnet, an armature. fulcrumed. to and associated with said core remote from and to actuate said springs when the magnet is energized, a lift member for said springs, a lever interposed between said armature and lift member and having a fixed fulcrum remote from the armature fulcrum and an actuating arm of fixed length for actuating said lift member, a stud positioned tomove said lever from said armature, and means whereby the stud may be adjusted toward or from said lever fulcrum to change the activated arm of the lever.
  • an electromagnetic relay in combination, an elongated core, a winding intermediate the ends of said core, an armature fulcrumed to one end of said core and having a part cooperating with the opposite end, an arm on said armature overhanging said opposite end and having an adjustable stop for cooperation therewith, a lever fulcrumed adjacent said winding and having an adjustable lifting screw intermediate its ends, a contact spring extending substantially parallel to said core and having an operating pin bearing on said lifting screw, a stud intermediate the lever and overhanging arm to actuate the former from the latter, and means providing a path through which said stud may be adjusted to change the effective length of the actuated arm of the lever.

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  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Radiation-Therapy Devices (AREA)
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US51445A 1947-10-09 1948-09-27 Electromagnetic relay with adjustable lever-relation Expired - Lifetime US2588534A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE272406X 1947-10-09

Publications (1)

Publication Number Publication Date
US2588534A true US2588534A (en) 1952-03-11

Family

ID=20306799

Family Applications (1)

Application Number Title Priority Date Filing Date
US51445A Expired - Lifetime US2588534A (en) 1947-10-09 1948-09-27 Electromagnetic relay with adjustable lever-relation

Country Status (5)

Country Link
US (1) US2588534A (enrdf_load_stackoverflow)
BE (1) BE485216A (enrdf_load_stackoverflow)
CH (1) CH272406A (enrdf_load_stackoverflow)
FR (1) FR973378A (enrdf_load_stackoverflow)
GB (1) GB647618A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2834850A (en) * 1954-02-12 1958-05-13 Essex Wire Corp Relay
US3092702A (en) * 1962-01-29 1963-06-04 Automatic Elect Lab Microswitch relay
US3369206A (en) * 1965-03-10 1968-02-13 Ericsson Telefon Ab L M Electromagnetic telephone relay

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US237776A (en) * 1881-02-15 James c
US749814A (en) * 1904-01-19 John p
US1246625A (en) * 1916-09-22 1917-11-13 Western Electric Co Multicontact switching device.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US237776A (en) * 1881-02-15 James c
US749814A (en) * 1904-01-19 John p
US1246625A (en) * 1916-09-22 1917-11-13 Western Electric Co Multicontact switching device.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2834850A (en) * 1954-02-12 1958-05-13 Essex Wire Corp Relay
US3092702A (en) * 1962-01-29 1963-06-04 Automatic Elect Lab Microswitch relay
US3369206A (en) * 1965-03-10 1968-02-13 Ericsson Telefon Ab L M Electromagnetic telephone relay

Also Published As

Publication number Publication date
CH272406A (de) 1950-12-15
GB647618A (en) 1950-12-20
BE485216A (enrdf_load_stackoverflow)
FR973378A (fr) 1951-02-09

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