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US3168634A - Electrical contact device - Google Patents

Electrical contact device Download PDF

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Publication number
US3168634A
US3168634A US204950A US20495062A US3168634A US 3168634 A US3168634 A US 3168634A US 204950 A US204950 A US 204950A US 20495062 A US20495062 A US 20495062A US 3168634 A US3168634 A US 3168634A
Authority
US
United States
Prior art keywords
contact
edgewise
bar
contact member
plane
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
US204950A
Other languages
English (en)
Inventor
Holzer Walter
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of US3168634A publication Critical patent/US3168634A/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
    • H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
    • H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
    • H01H19/60—Angularly-movable actuating part carrying no contacts
    • H01H19/62—Contacts actuated by radial cams
    • 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
    • H01H1/26—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting with spring blade support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • 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
    • H01H2001/247—Contacts characterised by the manner in which co-operating contacts engage by abutting with resilient mounting using an elastic hinge, the contact being composed of rigid parts connected by thinned flexible hinge parts

Definitions

  • the invention relates. to an electric contact member comprising a connector portion, a resilient intermediate portion and a contact making portion, the member being stamped in one piece and being edgewise upstanding bedisadvantagethat it requiresa considerable amount of time and material to be made insofar that the incisions have to be stamped out.
  • the considerably reduced cross sectional area 1s also a a disadvantage.
  • the construction is disadvantageous insofar that the spring constant cannot be extensively varied.
  • the invention aims to avoid these disadvantages and to construct the resilient intermediate portion in such a way that, without weakening the cross section, resilience is obtained in two perpendicular planes.
  • the resilient intermediate portion is formed by a connecting piece which is turned through substantially 90 between the connector portion and the contact making portion.
  • the generally ed'gewise upstanding stamping is twisted through substantially 90 at selected places. This twisted length of the stamping is considerably resilient compared with the adjoining edgewise upstanding portions. The amount of resilience depends on the length of the twisted portion.
  • the contact member is in the form of a stamping mounted edgewise upstanding between the plates and, adjoining the end of the connector portion, it is twisted through 90', the contact being mounted at the end of the twisted part.
  • stamping with alternate portions which are twisted through 90 to one another.
  • the contact member can be. given any desired spring constant.
  • the finger 5 is reciprocated in the direction of the arrow little space is available for resilience is obtained in perpendicularly lined planes because the spring force is always largest at that. place where the bending edge has the smallest height.
  • FIG. 1 illustrates an electric contact member mounted between two plates
  • FIG. 2 shows a modification of the contact making portion of the contact member
  • the contact member comprising a fiat elongated resilient bar 14 is mounted between the plates 1, 2 and has finger projections 8 andS projecting respectively therein by sliding it into place.
  • the contact 10 which bears on the counter contact 21 is fixed at the front of the contact making portion 9.
  • the resilient intermediate portion 11 comprises a connecting piece 12 which has been twisted through This connecting piece is direction of the arrow 13.
  • Such resilience is important for making contact between the contact 10 and the counter contact 21.
  • the edgewise upstanding portion 14 is strongly resilient in the direction of the arrow 15, i.e. the resilience in the direction of the arrow 13 is perpendicular to the resilience in the direction of the arrow 15.
  • the edgewise upstanding portion 14 is pretensi-oned to lie against the plate 2. Such pretension is produced by the spring whose clamping portion 16 is determined by the start of the 90 twisted connecting piece 12.
  • the contact 10 co-operates with a counter contact 17,
  • two intermediate pieces 12, 18 are provided both of which are twisted through 90 relatively to the edgewise upstanding portion 14. It will be evident that this permits resilience to be obtained by simple means and at any desired place without using any special materials.
  • the spring constant can be varied still further.
  • the invention can be employed wherever simple edgewise upstanding contact members are to have'a certain constant spring effect at selected places.
  • a further application is the case of housings wherein V the contacts.
  • the intermediate wall-s between individual contacts or projections of the housings can be constructed so that they also form guides for the contacts because either the broad surfaces or the surfaces lying perpendicular thereto torm abutments therefore.
  • the contact is not likely to stick against the. intermediate walls but will, instead, align itself resiliently.
  • said contact member comprising a thin flat resilient bar having one end 'por-' tion anchored in fixed position and the other end portion carrying a contact, the intermediate and contact portions of the bar being movable edgewise in the plane of the side edges of the bar, the portion of the bar adjacent the anchored end having spaced alternate 90 twists defining therebetween a spring-like bendable portion having its edgewise flat surface at right angles to the edgewise flat surface of the intermediate portion, and rotary cam means tion of said bar and in the edgewise plane ofgsaid intermediate portion, and said intermediate portion having an intergr-al edgewise extending finger projecting through said aperture and contacting said rotary cam means.
  • An electrical contact bar comprising av flat resilient strip having the end portions thereof and an intermediate portion lying in a common edgewise plane, one end having spaced projections in said plane and the other end having electrical contact means, said bar having spaced twists adjacent said one end, that portion of the bar between said twists having its edgewise plane at right angles to said first edgewise plane, and said intermediate portion having an integral finger projectionextending in a direction opposite that of said first named projections and lying in the first-named plane whereby cam means operating against said projection may cause the bar to flex between said twists;

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Manufacture Of Switches (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Breakers (AREA)
US204950A 1961-06-27 1962-06-25 Electrical contact device Expired - Lifetime US3168634A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH42966A DE1181783B (de) 1961-06-27 1961-06-27 Kontaktteil als Stanzteil

Publications (1)

Publication Number Publication Date
US3168634A true US3168634A (en) 1965-02-02

Family

ID=7155046

Family Applications (1)

Application Number Title Priority Date Filing Date
US204950A Expired - Lifetime US3168634A (en) 1961-06-27 1962-06-25 Electrical contact device

Country Status (4)

Country Link
US (1) US3168634A (de)
DE (1) DE1181783B (de)
FR (1) FR1326093A (de)
GB (1) GB1004293A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3866007A (en) * 1973-10-09 1975-02-11 Shlesinger Jr Bernard E Contact reed with foil-thin intermediate section

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2434740A (en) * 1944-02-17 1948-01-20 Square D Co Contact device
US2438186A (en) * 1946-01-25 1948-03-23 Stewart Warner Corp Time-delay switch
US2483939A (en) * 1949-10-04 Pilot and buhner control
US2660646A (en) * 1951-08-24 1953-11-24 Edison Inc Thomas A Thermostatic switch

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483939A (en) * 1949-10-04 Pilot and buhner control
US2434740A (en) * 1944-02-17 1948-01-20 Square D Co Contact device
US2438186A (en) * 1946-01-25 1948-03-23 Stewart Warner Corp Time-delay switch
US2660646A (en) * 1951-08-24 1953-11-24 Edison Inc Thomas A Thermostatic switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3866007A (en) * 1973-10-09 1975-02-11 Shlesinger Jr Bernard E Contact reed with foil-thin intermediate section

Also Published As

Publication number Publication date
DE1181783B (de) 1964-11-19
FR1326093A (fr) 1963-05-03
GB1004293A (en) 1965-09-15

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