US3213212A - Rotary switch with movable double bladed contacts - Google Patents

Rotary switch with movable double bladed contacts Download PDF

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Publication number
US3213212A
US3213212A US209062A US20906262A US3213212A US 3213212 A US3213212 A US 3213212A US 209062 A US209062 A US 209062A US 20906262 A US20906262 A US 20906262A US 3213212 A US3213212 A US 3213212A
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US
United States
Prior art keywords
stators
rotor
stator
terminal
read
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
US209062A
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English (en)
Inventor
William A Sefton
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.)
Globe Union Inc
Original Assignee
Globe Union Inc
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 Globe Union Inc filed Critical Globe Union Inc
Priority to US209062A priority Critical patent/US3213212A/en
Priority to GB16683/63A priority patent/GB970025A/en
Priority to DEG37979A priority patent/DE1225737B/de
Priority to FR940442A priority patent/FR1362279A/fr
Application granted granted Critical
Publication of US3213212A publication Critical patent/US3213212A/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
    • H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch
    • H01H19/58—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch
    • 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
    • H01H19/02—Details
    • H01H19/10—Movable parts; Contacts mounted thereon
    • H01H19/11—Movable parts; Contacts mounted thereon with indexing means

Definitions

  • the primary object of this invention is to provide a switch of reduced size and increased switching functions and to maintain the electrical load capacity of the switch.
  • a further object of this invention is to provide an improved rotor and contactor assembly that can be quickly and accurately assembled with a minimum of skill.
  • a rotor is journaled between two stators with double bladed contacts secured to the rotor in a position to engage both stators.
  • Each stator has an equal number of terminals mounted thereon in an opposed aligned relation and an independent contact member mounted on one of the stators to provide the read-out or test circuit.
  • the number of double bladed contacts on the rotor is equal to the number of pairs of terminals on the stators so that all except one of the pairs of terminals will be interconnected by the contacts in each position of the rotor.
  • the one pair of terminals which is not interconnected is short circu'ited to the read-out contact member.
  • One pair of terminals can then be checked in each position of the switch.
  • the double bladed contacts are provided with a tab which is nested into a groove in the rotor during assembly to properly align the contacts in the rotor.
  • FIG. 1 is a view in side elevation of the switch
  • FIG. 2 is a view taken on line 2-2 of FIG. 1 showing the indexing mechanism
  • FIG. 3 is a view taken on line 3-3 of FIG. 1 showing the common contact terminal on the face of the stator;
  • FIG. 4 is a view taken on line 4-4 of FIG. 1 showing the face of the opposite stator
  • FIG. 5 is an end view of the rotor
  • FIG. 6 is a view of the other end of the rotor.
  • FIG. 7 is a view of the strut mounting arrangement.
  • switch assembly 10 is mounted on a switch panel 12 (shown partly broken away in FIG. 1) by inserting shaft 14 and bushing 16 through aperture 18. Nut 20 and washer 22 are used to secure the bushing on the panel. A knob (not shown) is provided on the end of the shaft to rotate the switch to the desired positions and a snap ring 17 holds the shaft in the bushing.
  • An indexing mechanism 24 is provided on the switch assembly to positively locate the shaft in each of the positions provided on the switch.
  • the index mechanism includes a front plate 26 and spring 28 rigidly secured to the bushing and an index wheel 30 rigidly secured to the shaft.
  • a ball 32 is mounted in aperture 34 in the front plate and is biased by the spring into engagement with the index wheel. On rotation of the shaft, the ball will seat in one of the dwells 35 in the index locating the shaft at a particular position.
  • the shaft extends through stators 36 and 38 which are secured to the front plate by bolts 40.
  • Spacers 42 and 44 are provided between the front plate and stator 36 and stator 38, respectively.
  • Nut 46 and lock washer 48 are provided on the end of the bolts to secure the assembly together.
  • Rotor 50 is journaled between the stators and is mounted to rotate with the shaft.
  • a number of contactors 52 having equal length arms 54 are mounted on the rotor by eyelets 56. The outer ends 58 of the arms are biased to slide on the inner surfaces of the stators.
  • a number of terminals 60 and 62 are mounted on and are equally spaced about the periphery of the stators and have contact surfaces 64 and 65 which are located in the circle of revolution of the ends of the contact arms on the rotor.
  • the contact arms on the rotor are spaced the same as the terminals on the stators so that an electrical circuit will be completed between the terminals on one stator and the terminals on the other stator.
  • a read-out contactor 66 which has a normal length arm 68 and a short arm 70 that rides upon a full ring contact 72 on the stator 38.
  • the full ring contact is connected to a checking circuit to thereby check the tube circuit connected to the terminal engaged by contact arm 68.
  • the rotor is made of molded plastic and is so designed that the contactors are individually nested in the rotor.
  • the contact arms are made of a single piece of material which is folded over to form the arms thereby insuring electrical continuity.
  • the folded over section of the contactor has a tab 74 which pockets into a nest or groove 76 in the rotor to insure proper positioning and tightness of the contactors.
  • the diameters of ends 61 of the rotor are accurately turned so that the rotor rides in holes 63 and 71 in the stator. End play is limited by shoulders 67 and 69 on the rotor.
  • the present switch is designed to check up to a fourteen terminal tube.
  • Fourteen posit-ions are provided on the index wheel with a pair of terminals 60 and 62 provided on the stators at each position. Thirteen of these pairs of terminals are electrically connected by the contactors on the rotor in each position of the index wheel.
  • the fourteenth pair is short circuited by the read-out contactor and connected to the full ring contactor. The read-out contactor will sequentially check the terminals in either direction of rotation.
  • a rotary switch mechanism comprising, in combination,
  • each of said electrical contactor means arranged to extend between and electrically connect the terminal means on said stators in pairs so that circuits are completed between the terminal means on said stators in pairs,
  • the rotary switch mechanism of claim 1 including indexing means connected with said rotor means and operative to index movement of said rotor means to positively locate said electrical contactor means and said read-out contactor means relative to and for engagement with said stator terminal means.
  • index wheel connected to and rotatable with said rotor means, said index wheel including a plurality of relatively spaced, peripherally arranged, radial dwells,
  • stators each include an aperture with said apertures coaxially arranged relative to each other and wherein said rotor mens includes first and second relatively spaced bearing surfaces, one of said bearing surfaces journaled in one of said apertures and the other journaled in the other aperture.
  • said electrical contactor means each comprises a generally U- shaped continuous strip of resilient electrically conductive material the closed end of which is connected to said rotor means and the free ends of which are arranged to selectively engage the terminal means on said stators.
  • said readout contactor means comprises a generally U-shaped continuous strip of resilient electrically conductive material the closed end of which is connected to said rotor means and one free end of which is arranged for continuous engagement with said read-out terminal means and the other free end of which is arranged to sequentially engage the terminal means on said second stator.
  • a rotary switch comprising, in combination,
  • first and second stators are first and second stators.
  • each of said electrical contactor means extending between and electrically connecting terminal means on said first stator to terminal means on said second stator so that circuits are completed between the terminal means of said stators in pairs,
  • a rotor comprising,
  • a contactor also in the form of a single strip of electrically conductive material and folded back on itself to form a closed end and a pair of contact arms, said last-mentioned contactor positioned with its closed end in one of said grooves, one contact arm positioned to engage the terminals on the other stator member and the other arm thereof positioned to engage the annular terminal to short circuit one of the pairs of terminals on the stators.
  • a fourteen position tube checker switch comprising,
  • one of said stators having a continuous annular termi nal mounted on said one face of one of the stators,
  • a switch according to claim 9 wherein said means for supporting said stators includes spacers for spacing said stators a predetermined distance apart.
  • means for mounting said contactors in the rotor comprises, a number of grooves corresponding to the number of terminals on one of said stators, said grooves being equally angularly spaced about the axis of the rotor, and an aligning tab on each of said contactors which nests in the groove when the contactors are secured thereto.
  • a switch mechanism comprising, in combination,
  • first means for supporting said first and second sets of terminal means and said read-out terminal means in relative spaced relation
  • a rotary switch comprising, in combination,

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switches With Compound Operations (AREA)
US209062A 1962-07-11 1962-07-11 Rotary switch with movable double bladed contacts Expired - Lifetime US3213212A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US209062A US3213212A (en) 1962-07-11 1962-07-11 Rotary switch with movable double bladed contacts
GB16683/63A GB970025A (en) 1962-07-11 1963-04-29 Improvements in electrical switches
DEG37979A DE1225737B (de) 1962-07-11 1963-06-18 Elektrischer Schalter zum Pruefen von mehrere Anschluesse aufweisenden elektrischen Anordnungen
FR940442A FR1362279A (fr) 1962-07-11 1963-07-05 Commutateur électrique rotatif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US209062A US3213212A (en) 1962-07-11 1962-07-11 Rotary switch with movable double bladed contacts

Publications (1)

Publication Number Publication Date
US3213212A true US3213212A (en) 1965-10-19

Family

ID=22777166

Family Applications (1)

Application Number Title Priority Date Filing Date
US209062A Expired - Lifetime US3213212A (en) 1962-07-11 1962-07-11 Rotary switch with movable double bladed contacts

Country Status (4)

Country Link
US (1) US3213212A (fr)
DE (1) DE1225737B (fr)
FR (1) FR1362279A (fr)
GB (1) GB970025A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3352979A (en) * 1966-09-30 1967-11-14 Rcl Electronics Inc Switch contact assembly
US3860774A (en) * 1973-08-23 1975-01-14 Mikhail Iosifovich Karger Rotary-type control switch for selectively controlling a plurality of electrical circuits
US4052573A (en) * 1975-02-17 1977-10-04 Murata Manufacturing Co., Ltd. Rotary or slide type switch assembly having recessed printed circuit substrate, interposed resilient bridging contact and movable printed circuit disc
US4572931A (en) * 1982-09-21 1986-02-25 Alps Electric Co., Ltd. Rotary switch

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8605994U1 (de) * 1986-03-05 1987-07-02 Preh-Werke GmbH & Co. KG, 97616 Bad Neustadt Schalteranordnung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2414342A (en) * 1944-06-20 1947-01-14 Western Electric Co Switching device
US2576836A (en) * 1947-08-07 1951-11-27 Bell Telephone Labor Inc Switch
US2694756A (en) * 1949-09-22 1954-11-16 Us Instr Corp Rotary switch
US2900462A (en) * 1957-06-27 1959-08-18 Internat Instr Inc Rotary selective switch
US2967216A (en) * 1960-03-08 1961-01-03 Henry S Zablocki Contact making assembly

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1894225A (en) * 1928-12-31 1933-01-10 Johann G Peterson Electric switch

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2414342A (en) * 1944-06-20 1947-01-14 Western Electric Co Switching device
US2576836A (en) * 1947-08-07 1951-11-27 Bell Telephone Labor Inc Switch
US2694756A (en) * 1949-09-22 1954-11-16 Us Instr Corp Rotary switch
US2900462A (en) * 1957-06-27 1959-08-18 Internat Instr Inc Rotary selective switch
US2967216A (en) * 1960-03-08 1961-01-03 Henry S Zablocki Contact making assembly

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3352979A (en) * 1966-09-30 1967-11-14 Rcl Electronics Inc Switch contact assembly
US3860774A (en) * 1973-08-23 1975-01-14 Mikhail Iosifovich Karger Rotary-type control switch for selectively controlling a plurality of electrical circuits
US4052573A (en) * 1975-02-17 1977-10-04 Murata Manufacturing Co., Ltd. Rotary or slide type switch assembly having recessed printed circuit substrate, interposed resilient bridging contact and movable printed circuit disc
US4572931A (en) * 1982-09-21 1986-02-25 Alps Electric Co., Ltd. Rotary switch

Also Published As

Publication number Publication date
FR1362279A (fr) 1964-05-29
GB970025A (en) 1964-09-16
DE1225737B (de) 1966-09-29

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