US2779843A - Contact spring groups for electromagnetic connecting devices for obtaining a variation of the chronological order for the contact functions of the group - Google Patents

Contact spring groups for electromagnetic connecting devices for obtaining a variation of the chronological order for the contact functions of the group Download PDF

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Publication number
US2779843A
US2779843A US397745A US39774553A US2779843A US 2779843 A US2779843 A US 2779843A US 397745 A US397745 A US 397745A US 39774553 A US39774553 A US 39774553A US 2779843 A US2779843 A US 2779843A
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US
United States
Prior art keywords
springs
contact
teeth
bar
movable
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Expired - Lifetime
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US397745A
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English (en)
Inventor
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
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Telefonaktiebolaget LM Ericsson AB
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Filing date
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Publication of US2779843A publication Critical patent/US2779843A/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 invention relates more exactly to such devices, which at the fore, free ends of the springs are provided with supporting bars with teeth for all springs and lifting bars with teeth for movable springs.
  • armature of the device When the armature of the device is operated and in the usual manner actuates the movable lifting bar, a number of contact functions are obtained in the existing contact spring group. It is in many cases desirable to vary the chronological order for these contact functions.
  • lifting bars with different intervals between the teeth have been provided. This method has however made a large number of different lifting bars necessary.
  • This invention has for an object to make said variation possible in a simple way at bars with the same interval between the teeth. This is achieved in such a way that first in front of a tooth on one of the bars one or more of the contact springs are provided with an indentation in the spring material.
  • Fig. 1 is a perspective view of a contact spring group in a telephone relay.
  • Fig. 2 is a side view of a section through the fore, free ends of the contact springs.
  • Fig. 3 shows the front part of a contact spring provided with the indentation that is characteristic of the invention.
  • the contact spring group shown in Fig. l is mounted on the yoke 3 of the relay, the core 1 and armature 2 of which are indicated on the drawing.
  • the group is composed of a number of contact springs, including rigid springs 16-19, and movable springs 1215, which all in the usual manner along a part of their length are tensed and electrically insulated from each other in a block 4.
  • the free, fore ends of the movable springs l219, which ends are provided with contacts, are kept at a predetermined spacing from each other by means of a supporting bar 5, provided with teeth, against which the springs are resting with a determined bias.
  • the bar consists of insulation material and has a fixed position in relation to the block 4.
  • a toothed lifting bar 11 which likewise consists of insulation material.
  • the teeth on respective bars are equally spaced.
  • the rigid contact springs have each a slot 20, so that the teeth of bar 11 cannot actuate these springs.
  • the movable contact springs which like the springs 14 and 15 are plane just in front of the teeth on the lifting bar 11, are moved by this bar practically immediately, when upon operation of the armature 2 the bar is lifted upwards, and engage the corresponding rigid springs.
  • Each of the movable springs 14, 15 overlies in the shown normal or rest position, that is when armature is not attracted, the respective tooth on the lifting bar.
  • the spring material of the curtain of the movable contact springs has, according to the invention, been deformed just in front of the teeth on the lifting bar.
  • springs 12, 13 are provided with indentations 21 in the material, so that the spacing between these springs and respective tooth on the lifting bar is Wider than for the plane springs 14 and 15.
  • the springs 12 and 13 are consequently moved by the bar 11 later than the springs 14 and 15, whereby the desired change in time with regard to contact actuation is achieved.
  • the construction may be varied by arranging the indentations in front of the teeth on the rigid supporting bar.
  • the indentation in the spring material is then placed on a rigid spring, so that the spring will be lowered a little and thus lie at a smaller distance from the corresponding movable contact spring than would be the case without such an indentation.
  • a switching device of the kind wherein a plurality of movable and stationary contact springs are held spaced apart by the teeth of a toothed support bar and movable into and out of engagement by the teeth of a toothed lifting bar upon displacement of said latter bar, the teeth of the support bar and the lifting bar respectively being equally spaced, in combination with means staggering the engagement of the stationary contact springs by the movable contact springs upon displacement of the lifting bar, said means comprising a deformation of at least one of the contact springs varying the spacing of said spring from the coacting tooth of one of said bars in relation to the spacings of the other springs from the respective teeth of said bars.
  • a switching device of the kind wherein a plurality of movable and stationary contact springs are held spaced apart by the teeth of a toothed support bar and movable into and out of engagement by the teeth of a lifting bar upon displacement of said latter bar, the teeth of the support bar and the lifting bar respectively being equally spaced, at least one'movable contact spring having opposite the respective tooth of the lifting bar a part bent out of the general plane of the said spring to increase the spacing between said bent out spring and the said tooth in relation to the spacings between the other movable contact springs and the respective teeth of the litfing bar for staggering the engagement of the stationary contact springs by the movable contact springs upon displacement of the lifting bar.
  • a switching device of the kind wherein a plurality of movable and stationary contact springs are held spaced apart by the teeth of a toothed support bar and movable into and out of engagement by the teeth of a toothed lifting bar upon displacement of said latter bar, the teeth of the support bar and the lifting bar respectively being equally spaced, at least one movable contact spring having an indentation opposite the respective tooth of the lifting bar to increase the spacing between the said spring and the said tooth in relation to the spacings between the other movable contact springs and the respective teeth of the lifting bar for staggering the engagement of the stationary contact springs by the movable contact springs upon displacement of the lifting bar.
  • a switching device of the kind wherein a plurality of movable and stationary contact springs are held spaced 3 apart by the teeth of a toothed support barand movable into and out of engagement of the teeth of a toothed lifting bar upon displacement of said latter bar, the teeth of the support bar and the lifting bar respectively being equally spaced, several movable contact springs each having an indentation opposite the respective tooth of the lifting bar to increase the spacings between said indented springs and the said teeth in relation to the spacings between the other movable contact springs and the respective teeth of the lifting bar, the said indentations having depths difierent one from another whereby the engagement of thestationary contact springs by the movable contact springs upon displacement of the lifting bar is staggered as to time.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Telephone Set Structure (AREA)
  • Contacts (AREA)
US397745A 1952-12-31 1953-12-11 Contact spring groups for electromagnetic connecting devices for obtaining a variation of the chronological order for the contact functions of the group Expired - Lifetime US2779843A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2779843X 1952-12-31

Publications (1)

Publication Number Publication Date
US2779843A true US2779843A (en) 1957-01-29

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ID=20427243

Family Applications (1)

Application Number Title Priority Date Filing Date
US397745A Expired - Lifetime US2779843A (en) 1952-12-31 1953-12-11 Contact spring groups for electromagnetic connecting devices for obtaining a variation of the chronological order for the contact functions of the group

Country Status (5)

Country Link
US (1) US2779843A (pt)
BE (1) BE525140A (pt)
DE (1) DE929309C (pt)
FR (1) FR1089723A (pt)
NL (2) NL183833B (pt)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2911498A (en) * 1958-01-17 1959-11-03 Cons Electronics Ind Coaxial relay
US2939932A (en) * 1956-09-01 1960-06-07 Int Standard Electric Corp Relays with guided contact spring
DE1110275B (de) * 1958-10-06 1961-07-06 Busch Jaeger Duerener Metall Elektrischer Nockenschalter
US3236987A (en) * 1963-06-11 1966-02-22 Sigma Instruments Inc Contact element assembly including positioning means
US3534196A (en) * 1969-03-03 1970-10-13 Nippon Musical Instruments Mfg Electrical switch assembly
DE1665112B1 (de) * 1964-11-11 1970-10-22 Reinhausen Maschf Scheubeck Kontaktanordnung fuer stromlos unterbrechende Schalter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2279811A (en) * 1940-06-19 1942-04-14 Bell Telephone Labor Inc Relay
US2632065A (en) * 1948-11-02 1953-03-17 Automatic Telephone & Elect Electrical switching apparatus
US2675445A (en) * 1952-01-25 1954-04-13 Casco Products Corp Thermostat for heating pads, blankets, and the like

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2279811A (en) * 1940-06-19 1942-04-14 Bell Telephone Labor Inc Relay
US2632065A (en) * 1948-11-02 1953-03-17 Automatic Telephone & Elect Electrical switching apparatus
US2675445A (en) * 1952-01-25 1954-04-13 Casco Products Corp Thermostat for heating pads, blankets, and the like

Cited By (6)

* 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
US2911498A (en) * 1958-01-17 1959-11-03 Cons Electronics Ind Coaxial relay
DE1110275B (de) * 1958-10-06 1961-07-06 Busch Jaeger Duerener Metall Elektrischer Nockenschalter
US3236987A (en) * 1963-06-11 1966-02-22 Sigma Instruments Inc Contact element assembly including positioning means
DE1665112B1 (de) * 1964-11-11 1970-10-22 Reinhausen Maschf Scheubeck Kontaktanordnung fuer stromlos unterbrechende Schalter
US3534196A (en) * 1969-03-03 1970-10-13 Nippon Musical Instruments Mfg Electrical switch assembly

Also Published As

Publication number Publication date
DE929309C (de) 1955-06-23
BE525140A (pt)
FR1089723A (fr) 1955-03-21
NL183833B (nl)
NL90285C (pt)

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