US2911493A - Miniature relay for high switching frequencies - Google Patents

Miniature relay for high switching frequencies Download PDF

Info

Publication number
US2911493A
US2911493A US710250A US71025058A US2911493A US 2911493 A US2911493 A US 2911493A US 710250 A US710250 A US 710250A US 71025058 A US71025058 A US 71025058A US 2911493 A US2911493 A US 2911493A
Authority
US
United States
Prior art keywords
counter
relay
contact
lever
contacts
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
US710250A
Other languages
English (en)
Inventor
Weber Karel
Kralove Novy Hradec
Jansa Bohuslav
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.)
Tesla AS
Original Assignee
Tesla AS
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 Tesla AS filed Critical Tesla AS
Application granted granted Critical
Publication of US2911493A publication Critical patent/US2911493A/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
    • 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
    • H01H1/24—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting
    • H01H1/242—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting the contact forming a part of a coil spring

Definitions

  • the relay according to the present invention presents such a high switching frequency as to carry out conveniently the above mentioned 25,000, and even more, switching operations per hour commonly required in teleprinters and the like, and its durability, when subjected to such heavy duty, exceeds by far the durability of a normal telephonic relay under similar working conditions.
  • the desired durability with greatly reduced dimensions of the relay is achieved in accordance with the present invention by pivotally mounting the armature lever of the relay, and by causing its driving end to act on rigid rodlike extensions of helically wound springs which are fixed in such a way as to ensure that, in a rest position with the driving end of the armature lever spaced from the rodlike extensions, the contact ends of the rodlike extensions bear only with the initial tension of the springs against the corresponding twin counter-contacts, while in the other position, i.e.
  • each helically wound spring forms a rigid lever pivoting about the driving end of the armature lever in such a way that the tension of the spring causes the contacts to roll on the twin counter-contacts which are supported either flexibly or rigidly on a rigid carrier.
  • Fig. 1A is a side elevational view of the miniature relay embodying the invention
  • Fig. 1B is an end elevational view of the relay
  • Fig. 1C is a bottom plan view of the relay.
  • Figs. 2 and 3 are enlarged detail views showing the contacts of the relay in the deenergized and energized conditions of the latter.
  • the miniature relay according to the present invention consists of a coil 1 with terminals 2 which is fixed 2,911,493 Patented Nov. 3, 1959 "ice on a frame in the form of an angle 3 of soft iron.
  • the angle 3 has a leg 3a extending parallel to the axis of coil 1 along the latter and a spindle 4 is held in place at the end of leg 3a.
  • the spindle 4 has hardened ends received in bearing eyelets of a bent lever 5 which is generally U-shaped (Fig.
  • a holder 7 of an insulating material is also fixed to the angle leg 3a and supports helically wound springs Shaving their axes extending generally parallel to the leg 3a.
  • Leaf springs 9 backed by fixed metal strips 10 are also supported by holder 7 at the sides of springs 8 facing away from angle leg 3a.
  • Countercontacts 11 are fixed to the lower or free ends of leaf springs 9, while the upper or other ends 12 of the springs 9 project. short distances above holder 7 and are in the form of terminals.
  • a rigid rodlike extension 13 projects axially from the lower or free end of each helical spring 8 and has a widened contact 14 at the end remote from the related spring.
  • a transverse driving member 15 extending between the legs 5b of the lever 5 bears against the extensions 13 during the movement of lever 5 from the rest position into the energized position.
  • the contacts 14 fit against counter-contacts 16 which are provided with terminals or posts 17 and fixed on an insulating piece 18 secured to the iron angle 3.
  • Figs. 2 and 3 illustratethe positions of the springs 8 in the deenergized and energized conditions, respectively, of the relay.
  • each spring 8 urges the related movable contact 14 against the counter-contact 16 merely through its initial tension which is imparted to the spring when being secured in holder 7.
  • the relay When the relay is energized, lever 5 rocks in the counter-clockwise direction, as viewed in Fig.
  • the counter-contacts 11 and Marc preferably twin-contacts, as shown in Figs. 1A and 1C, that is, have two converging, arcuate contact surfaces, while the movable contact 14 has a cylindrical surface adapted to simultaneously engage both arcuate contact surfaces of the related counter-contacts 11 or 16 and to roll on such contact surfaces during rocking of the extension 13.
  • Figs. 1A and 1C twin-contacts
  • the movable contact 14 may have a surface that is convex both in the direction of its axis as well as circumferentially.
  • Figs. 2 and 3 only one contact surface of each of the counter-contacts 11 and 16 has been shown merely for the purpose of better illustrating the contact between the movable contact and associated counter-contacts.
  • the counter-contacts 11 may be resiliently mounted, for example, on the leaf springs 9 as in Figs. 1A, 1B and 1C, while the countercontacts 16 are rigidly supported, or both sets of countercontacts may be mounted on a fixed rigid carrier, as the helically wound spring 8 itself is adequate for equalizing any unevenness which may occur in the fitting of the contact 14 against the counter-contact 11.
  • the transverse member 15 displaces each extension 13 through a greater distance than is necessary for bringing about mere contact between the contact 14 and the counter-contact 11 for the purpose of ensuring a perfect contact therebetween, the extension is rocked and the contact 14 is performing a rolling movement on the counter-contact, whereby both these component parts are thoroughly cleaned.
  • the arrangement'of the miniature relay as shown in Figs. 1A, 1B and 10 represents merely one embodiment given by way of example and wherein some of the components can be replaced by other equivalent constructional elements without departing from the principle of the present invention.
  • the presently existing miniature ball bearings can be used for the, same purpose, whereby moreover-the frictional resistances and wear and tear of the components are substantially reduced.
  • the general arrangement of the miniature relay according to the present invention is extremely simple so that the possibility of convenient checking in course of" operation and easy adjustment of the relay during assembly are ensured;
  • a miniaturerelay for high switching frequencies comprising a frame, a coil mounted on said frame, a pivot pin carried by said frame, a lever pivoted on said pin and carrying an armature for movement between rest and operative positions upon deenergization and energization, respectively, of i said coil, spaced apart pairs of counter-contacts each having two converging, convex contact surfaces, means supporting said counter-contacts from said frame, a movable contact associated with each of'said pairs of counter-contacts for simultaneous engagement with both contact surfaces of a selected one of said pair of counter-contacts, a helical spring for each movable contact, means supporting said helical spring from said frame adjacent one end of the helical spring, a rigid rod-like element extending axially from the other end of said helical spring and carrying the associated movable contact at its free end, said helical spring being disposed to normallyurge the movable contact into engagement with one of the related pair of counter-contacts, a driving member on said
  • a miniature relay as'inclaim 1- wherein said lever has eyelets receiving the ends of said pin for pivotally mounting said lever onsaid pin, and said eyelets andends of said pin have hardened and ground: surfaces for're ducing frictional resistance to pivoting 'of the lever and,

Landscapes

  • Breakers (AREA)
  • Switches With Compound Operations (AREA)
US710250A 1957-01-22 1958-01-21 Miniature relay for high switching frequencies Expired - Lifetime US2911493A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS856164X 1957-01-22

Publications (1)

Publication Number Publication Date
US2911493A true US2911493A (en) 1959-11-03

Family

ID=5456203

Family Applications (1)

Application Number Title Priority Date Filing Date
US710250A Expired - Lifetime US2911493A (en) 1957-01-22 1958-01-21 Miniature relay for high switching frequencies

Country Status (4)

Country Link
US (1) US2911493A (is")
BE (1) BE564055A (is")
FR (1) FR1190367A (is")
GB (1) GB856164A (is")

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3427576A (en) * 1967-02-06 1969-02-11 Andrew W Vincent Constant force electromechanical actuator
US5321377A (en) * 1993-01-21 1994-06-14 Kaloust P. Sagoian Electromagnet for relays and contactor assemblies

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1254250B (de) * 1962-12-17 1967-11-16 Werk Fuer Bauelemente Der Nach Elektromagnetisches Miniaturrelais mit prellarmen Kontakten

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US501777A (en) * 1893-07-18 Burglar-alarm
US2296684A (en) * 1941-02-07 1942-09-22 Bendix Aviat Corp Electrical apparatus
US2547062A (en) * 1951-04-03 Electromagnetic belay
US2630503A (en) * 1951-03-05 1953-03-03 Central Commercial Ind Inc Electric switch
US2651689A (en) * 1952-02-04 1953-09-08 Bame Karl Door operated switch
US2755346A (en) * 1950-09-19 1956-07-17 Charles P Fisher Sensitive relay

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US501777A (en) * 1893-07-18 Burglar-alarm
US2547062A (en) * 1951-04-03 Electromagnetic belay
US2296684A (en) * 1941-02-07 1942-09-22 Bendix Aviat Corp Electrical apparatus
US2755346A (en) * 1950-09-19 1956-07-17 Charles P Fisher Sensitive relay
US2630503A (en) * 1951-03-05 1953-03-03 Central Commercial Ind Inc Electric switch
US2651689A (en) * 1952-02-04 1953-09-08 Bame Karl Door operated switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3427576A (en) * 1967-02-06 1969-02-11 Andrew W Vincent Constant force electromechanical actuator
US5321377A (en) * 1993-01-21 1994-06-14 Kaloust P. Sagoian Electromagnet for relays and contactor assemblies

Also Published As

Publication number Publication date
GB856164A (en) 1960-12-14
FR1190367A (fr) 1959-10-12
BE564055A (is")

Similar Documents

Publication Publication Date Title
US3800250A (en) Electromagnetic relay
US2266536A (en) Electric relay
US2911493A (en) Miniature relay for high switching frequencies
US2585684A (en) High-speed sensitive relay
US2397635A (en) Electromagnetic relay
US2758173A (en) Electric circuit chopper
US2424308A (en) Contactor
US3320392A (en) Electric control device with improved contact structure
US2638514A (en) Electric circuit controller
US3048749A (en) Electric relay
US2096054A (en) Electromagnetic switching device
US2203727A (en) Contact structure
US2398681A (en) Relay
US2914632A (en) Relay
US2400452A (en) Electromagnetic relay
US2385994A (en) Relay
US2811601A (en) Latching relay
US2422764A (en) Electromagnetic relay
US2866046A (en) Relay with self-cleaning contact elements
US1273245A (en) Electromagnetic switching device.
US2169740A (en) Relay
US2861147A (en) Spring arrangement
US2406216A (en) Electromagnet
US2162356A (en) Relay
US3461411A (en) Armature arrangement