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US2739209A - Device at contact spring groups, especially for electromagnetic relays - Google Patents

Device at contact spring groups, especially for electromagnetic relays Download PDF

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Publication number
US2739209A
US2739209A US362348A US36234853A US2739209A US 2739209 A US2739209 A US 2739209A US 362348 A US362348 A US 362348A US 36234853 A US36234853 A US 36234853A US 2739209 A US2739209 A US 2739209A
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US
United States
Prior art keywords
teeth
contact
springs
contact spring
bar
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
US362348A
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English (en)
Inventor
Palmgren Nils Gunnar
Wiberg Eric Axel
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 US2739209A publication Critical patent/US2739209A/en
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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
    • H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature

Definitions

  • the present invention relates to a device at contact spring groups for electromagnetic relays and similar connecting means with toothed supporting members or bars for controlling the free end of the contact springs.
  • Such supporting bars are normally provided with a supporting tooth for each contact spring, all the teeth lying in a row on one and the same side of the bar.
  • the interval between the teeth is thereby chiefly determined by the interval between the springs themselves and the width of the supporting tooth. Since said width must have a certain magnitude with regard to the mechanical strength of the tooth, the interval between the teeth will be very small when the interval between the springs is very small, which entails a very limited lifting motion for the movable contact springs.
  • the object of the present invention is to make an increase of said lifting motion possible by a construction in which the interval between the teeth is greater. This is achieved by the teeth of the supporting member being arranged in separate rows in such a manner, that the adjacent contact springs are controlled by teeth in different rows.
  • Fig. l is a perspective view of a contact spring group according to the invention.
  • Fig. 2 is a detail of Fig. 1.
  • Figs. 3 and 4 illustrate the working manner of a spring group in a construction according to Fig. 1 and in a known construction, respectively.
  • the contact spring group shown in Fig. l is supposed to be mounted on the yoke of the electromagnetic relay 11, the armature 12 of which is in the usual manner arranged to lift over a lifting bar 15 the movable springs 2, 4 in the contact spring groups 1, 2, 3, 4.
  • the lifting bar 15, which is sideways movable, is controlled by two spring supports 16, 17, between which furthermore a r supporting bar or a supporting member 14 is rigidly mounted. All the contact springs are supported close to their fore ends by teeth on the supporting bar 14, Figs. 1 and 2, whereas only the movable springs rest against teeth on the lifting bar 15.
  • the movable springs 2 and 4 are lifted towards the rigid springs 1 and 3, respectively, in a manner shown in Fig. 3.
  • the teeth 21, 22, 23, 24 on the rigidly mounted supporting bar 14, Figs. 2 and 3, are arranged in two rows, one to the left, 21, 23, and one to the right, 22, 24, on the bar 14.
  • the teeth are thereby placed in zigzag so that adjacent contact springs, for example 2 and 3, are controlled by teeth 22 and 23, respectively, in different rows.
  • Fig. 3 which shows the lifting bar 15 in actuated position, this allows the movable spring 4 to be lifted from its support against the tooth 24 towards the lower part of the tooth 22.
  • this height of lift corresponds the interval a1 marked on the drawing at the fore end of the spring.
  • a multiple contact device for an electromagnetic switch means comprising a plurality of contact springs disposed in superimposed, spaced apart relationship, lifting means for lifting predetermined ones of said contact springs into contact engagement, each of said contact springs having a longitudinally elongated slot therethrough situated intermediate to the ends of the springs, said slots being aligned to form a transverse passage through the springs, and a support bar extending through said passage, said bar having two rows of laterally extending teeth, the teeth in each of said rows forming supports for alternate contact springs in the spaced apart position of the latter.
  • a contact device according to claim 1, wherein the said rows of teeth are situated on opposite sides of the support bar in longitudinal alignment with the contact springs.
  • a multiple contact device for an electromagnetic switch means comprising a plurality of contact springs disposed in superimposed, spaced apart relationship, lifting means for lifting predetermined ones of said contact springs into contact engagement, each of said contact springs having a longitudinally elongated slot therethrough situated intermediate to the ends of the springs, said slots being aligned to form a transverse passage through the springs, and a support bar extending through said passage, said bar having two rows of laterally extending teeth axially staggered and situated on opposite sides of the support bar in longitudinal alignment with the contact springs, the teeth in each of said rows forming supports for alternate contact springs in the spaced apart position of the latter.
  • a contact device according to claim 3, wherein the said rows of teeth are staggered by the longitudinal width of one tooth, the said teeth being of uniform longitudinal width.
  • a contact device wherein the said slots in alternate contact springs are staggered relative to each other, each of said slots having one short edge situated within the space between the respective adjacent teeth of one row and the other edge outside the said space whereby the respective predetermined contact springs are capable of being lifted for an axial distance substantially corresponding to the axial spacing of the teeth.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Contacts (AREA)
  • Switch Cases, Indication, And Locking (AREA)
US362348A 1952-06-20 1953-06-17 Device at contact spring groups, especially for electromagnetic relays Expired - Lifetime US2739209A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE730933X 1952-06-20

Publications (1)

Publication Number Publication Date
US2739209A true US2739209A (en) 1956-03-20

Family

ID=20317955

Family Applications (1)

Application Number Title Priority Date Filing Date
US362348A Expired - Lifetime US2739209A (en) 1952-06-20 1953-06-17 Device at contact spring groups, especially for electromagnetic relays

Country Status (5)

Country Link
US (1) US2739209A (hu)
BE (1) BE520811A (hu)
FR (1) FR1079470A (hu)
GB (1) GB730933A (hu)
NL (2) NL179271B (hu)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2939932A (en) * 1956-09-01 1960-06-07 Int Standard Electric Corp Relays with guided contact spring
US4196328A (en) * 1978-03-18 1980-04-01 Iizuka Electric Industry Company Limited Electric switch

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE220388C1 (hu) * 1960-04-19 1968-05-07

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515914A (en) * 1943-05-25 1950-07-18 Ericsson Telefon Ab L M Contact mounting for electrical switches

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515914A (en) * 1943-05-25 1950-07-18 Ericsson Telefon Ab L M Contact mounting for electrical switches

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2939932A (en) * 1956-09-01 1960-06-07 Int Standard Electric Corp Relays with guided contact spring
US2956140A (en) * 1956-09-01 1960-10-11 Int Standard Electric Corp Electromagnetic relay spring assembly
US4196328A (en) * 1978-03-18 1980-04-01 Iizuka Electric Industry Company Limited Electric switch

Also Published As

Publication number Publication date
NL179271B (nl)
NL83068C (hu)
FR1079470A (fr) 1954-11-30
BE520811A (hu)
GB730933A (en) 1955-06-01

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