US3096422A - Multi-contact switching device - Google Patents

Multi-contact switching device Download PDF

Info

Publication number
US3096422A
US3096422A US5442A US544260A US3096422A US 3096422 A US3096422 A US 3096422A US 5442 A US5442 A US 5442A US 544260 A US544260 A US 544260A US 3096422 A US3096422 A US 3096422A
Authority
US
United States
Prior art keywords
contact
springs
bars
switching device
wires
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
US5442A
Other languages
English (en)
Inventor
Alexandersson Harald Valdemar
Dietsch Arne Kurt
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 US3096422A publication Critical patent/US3096422A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H67/00—Electrically-operated selector switches
    • H01H67/22—Switches without multi-position wipers
    • H01H67/26—Co-ordinate-type selector switches not having relays at cross-points but involving mechanical movement, e.g. cross-bar switch, code-bar switch

Definitions

  • This invention is mainly characterized in that the lifting ribs have a breadth which is bigger than the distance sideways between the contact wires.
  • the cross direction of the lifting ribs forms an angle less than 90 with respect to the longitudinal direction of the contact wires.
  • FIG. 1 shows a side view of a Wire spring set.
  • FIG. 2 shows four groups of a multiple seen from above.
  • FIG. 3 shows in perspective and in large scale three groups in a multiple seen from in front.
  • FIG. 4 is an enlarged picture of a lifting rib.
  • each group includes a number of wire springs 3 lying above each other and fastened in a normal way at their rear left ends. The front right ends of the wires are lifted upwards from the position of rest shown in the drawing by a lifting rib or bar 1 for each group, said lifting rib being actuate-d in a known way which is not shown.
  • the lifting rib 1 is provided with a number of oval holes 2 for the contact wires 3.
  • the holes are provided with a convex edge 4 upon which the contact wires rest. 6
  • the holes are suitably formed, at least on one side, with a greater width than the remainder of the holes to enable the lifting rib to be threaded on the contact wires.
  • the contact wires are provided with applied tubes 5 or sleeves of contact material at their front end. When the contact wires are actuated by the lifting ribs, these tubes make contact with wires 6, which are disposed in a stand 7 of insulating material and extend transverse of the contact wires 3.
  • the distance sideways between the contact wires 3 in the different groups is smaller than the width of conventional lifting ribs, so that the ribs can not be placed in a row with their cross direction perpendicular to the 3 ,096,422 Patented July 2, 1963 longitudinal direction of the contact wires.
  • the lifting ribs are placed so that their cross direction forms an angle less than with the longitudinal direction of the contact wires 3.
  • the ribs are guided in their position by diagonal holes in an upper and a lower guiding plate 8 respectively 9.
  • the holes 2 in the ribs are dimensioined so that the contact wires obtain a relatively good side guiding.
  • the wire springs cannot be directed so precisely that all the wires in a group get into exactly the same position below each other. This is especially true when they are actuated by diagonal ribs.
  • the holes in the ribs are dimensioned so that relatively good side guiding is obtained as previously mentioned, but still derivations in guiding appear at the front ends of the contact wires.
  • the contact sleeves 5 are positioned in relation to the surrounding insulating material of the stand '7 so that no wear and tear appears when the contact wires move upwards and downwards. If a wire spring is free in its inactive rest position, i.e.
  • A. multi-contact switching device comprising a plurality of substantially straight contact springs fixedly mounted at one end and grouped spaced apart in vertical and transverse rows, a plurality of stationary contacts each engageable with one of said contact springs at the free end thereof, and a lengthwise displaceable vertically disposed insulation lifting bar for each vertical row of contact springs, said bars being aligned in a row transverse of said contact springs, each of said bars contacting with all the contact springs in the respective vertical row to move said springs into and out of engagement with the respective stationary contacts by lengthwise displacement of the bars, said bars having a width greater than the transverse spacing between two adjacent vertical rows of springs and being positioned to define an angle of less than 90 with said contact springs whereby upon displacement of the bars into the contact-making position, a uniform contact pressure is exerted at all the stationary contacts in the respective vertical row.
  • each of said lifting bars has several vertically spaced holes therethrough one for each contact spring in the respective vertical row, the transverse width of said holes permitting passages of the springs during assembly of the device and placement of the bars at a slant in reference to the length of the springs.
  • a switching device according to claim 2 wherein a contact sleeve is secured upon the free end of each contact spring, each of said holes in the bars having a portion widened to permit passage of the respective contact sleeve.
  • each hole is convexly curved in reference to the respective contact spring extending through the hole, the apex of the convexly curved edge supporting the respective spring to guide the same during movement within the hole.
  • a switching device wherein said holes are formed with end portions that are substantially wider in vertical direction than the central portion 4 of the holes, said end portions guiding said springs in said holes when the springs are moved into the contact-making positions by said lifting bars.

Landscapes

  • Switches With Compound Operations (AREA)
  • Push-Button Switches (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
US5442A 1959-02-10 1960-01-29 Multi-contact switching device Expired - Lifetime US3096422A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE125659 1959-02-10

Publications (1)

Publication Number Publication Date
US3096422A true US3096422A (en) 1963-07-02

Family

ID=20257867

Family Applications (1)

Application Number Title Priority Date Filing Date
US5442A Expired - Lifetime US3096422A (en) 1959-02-10 1960-01-29 Multi-contact switching device

Country Status (5)

Country Link
US (1) US3096422A (fr)
BE (1) BE587197A (fr)
DE (1) DE1109742B (fr)
FR (1) FR1250097A (fr)
GB (1) GB913843A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614360A (en) * 1968-12-03 1971-10-19 Ericsson Telefon Ab L M A multiple contact switching device for crossbar switches
US3622729A (en) * 1969-07-25 1971-11-23 Nippon Gakki Seizo Hamamatsu S Key switch device for electronic musical instruments
US3924089A (en) * 1974-08-28 1975-12-02 Stackpole Component Co Keyboard switch
US3993883A (en) * 1974-04-08 1976-11-23 Telefonaktiebolaget L M Ericsson Contact spring set

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1162994A (en) * 1966-10-10 1969-09-04 Inertia Switch Ltd Improvements in or relating to Electric Switches

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE526371A (fr) * 1953-02-14
US1647792A (en) * 1921-06-20 1927-11-01 Western Electric Co Switching device
US2638514A (en) * 1948-09-25 1953-05-12 Westinghouse Air Brake Co Electric circuit controller
DE1025046B (de) * 1954-10-26 1958-02-27 Siemens Ag Schnappschaltvorrichtung mit Mehrfachkontaktgabe
US2846547A (en) * 1955-09-01 1958-08-05 Telephone Mfg Co Ltd Electric control making devices
US2902549A (en) * 1956-08-31 1959-09-01 Executone Inf Sys Inc Multiple unit pile-up switch

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1647792A (en) * 1921-06-20 1927-11-01 Western Electric Co Switching device
US2638514A (en) * 1948-09-25 1953-05-12 Westinghouse Air Brake Co Electric circuit controller
BE526371A (fr) * 1953-02-14
DE1025046B (de) * 1954-10-26 1958-02-27 Siemens Ag Schnappschaltvorrichtung mit Mehrfachkontaktgabe
US2846547A (en) * 1955-09-01 1958-08-05 Telephone Mfg Co Ltd Electric control making devices
US2902549A (en) * 1956-08-31 1959-09-01 Executone Inf Sys Inc Multiple unit pile-up switch

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614360A (en) * 1968-12-03 1971-10-19 Ericsson Telefon Ab L M A multiple contact switching device for crossbar switches
US3622729A (en) * 1969-07-25 1971-11-23 Nippon Gakki Seizo Hamamatsu S Key switch device for electronic musical instruments
US3993883A (en) * 1974-04-08 1976-11-23 Telefonaktiebolaget L M Ericsson Contact spring set
US3924089A (en) * 1974-08-28 1975-12-02 Stackpole Component Co Keyboard switch

Also Published As

Publication number Publication date
DE1109742B (de) 1961-06-29
GB913843A (en) 1962-12-28
FR1250097A (fr) 1961-01-06
BE587197A (fr) 1960-05-30

Similar Documents

Publication Publication Date Title
US2282687A (en) Set of contact springs for electrical switching apparatus
US3870840A (en) Switch pushbutton-type digit keyboard switch with leaf spring contract and actuator biasing means on common conductive frame
GB1563258A (en) Electric press button switches
US4046980A (en) Cam actuated switch
US3096422A (en) Multi-contact switching device
US4055734A (en) Keyboard switch assembly with hinged pushbuttons and cantilevered terminal members
US2425159A (en) Electric snap switch
US2562091A (en) Relay
US4568805A (en) J-Plate arc interruption chamber for electric switching devices
US2516772A (en) Cross-wire switch
US2965739A (en) Contact spring set
US2447010A (en) Crossbar switch
US3488613A (en) Magnetic keyboard switch
FI65147C (fi) Tryckknappsomkopplare foer anvaendning vid pao en isolerande basplatta anordnade stroemkretsar
US3200227A (en) Carrier frame for movable contact and combination thereof with snap acting switch
US2769880A (en) Contact device for cross bar switches
US2779843A (en) Contact spring groups for electromagnetic connecting devices for obtaining a variation of the chronological order for the contact functions of the group
US2399962A (en) Automatic switch
US2916575A (en) Quick action switch
US4314113A (en) Keyswitch having contacts mounted on cantilever beams
US3144524A (en) Web actuated switch
US3210504A (en) Extinguishing device for electrical arcs comprising a plurality of insulating plates
US3239628A (en) Teflon coated contact separator
US2956139A (en) Electrical multi-contact devices
US2955168A (en) Cross bar switch