US3359383A - Ingition switches - Google Patents

Ingition switches Download PDF

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Publication number
US3359383A
US3359383A US609956A US60995667A US3359383A US 3359383 A US3359383 A US 3359383A US 609956 A US609956 A US 609956A US 60995667 A US60995667 A US 60995667A US 3359383 A US3359383 A US 3359383A
Authority
US
United States
Prior art keywords
contact plate
plate
ignition
spring
casing
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
US609956A
Other languages
English (en)
Inventor
Cryer Edward
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.)
ZF International UK Ltd
Original Assignee
Lucas Industries Ltd
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 Lucas Industries Ltd filed Critical Lucas Industries Ltd
Application granted granted Critical
Publication of US3359383A publication Critical patent/US3359383A/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
    • H01H27/00—Switches operated by a removable member, e.g. key, plug or plate; Switches operated by setting members according to a single predetermined combination out of several possible settings
    • H01H27/06—Key inserted and then turned to effect operation of the switch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/36—Driving mechanisms
    • H01H21/50—Driving mechanisms with indexing or latching means, e.g. indexing by ball and spring; with means to ensure stopping at intermediate operative positions

Definitions

  • this invention relates to an ignition switch for a road vehicle of the type described, comprising a fixed contact plate, an angularly movable contact plate, displaceable with a rotor from an off-position into a first position for completing an ignition circuit for the vehicle and a second position for also completing a starter circuit, and compression spring means for urging the movable contact plate in the direction of the fixed contact plate, with the compression spring means being so shaped and connected that such spring means additionally serves as a torsion spring for urging the movable plate from the second position in the direction of the first position.
  • This invention relates to ignition switches for use in road vehicles, of the kind including a casing having rotatably mounted therein a rotor which is movable angularly to operate the switch.
  • a switch of the kind speci fied further includes a fixed contact plate, an angularly movable contact plate which is movable with the rotor from an off position into a first position in which in use it completes the ignition circuit of the vehicle, and a second position in which it also completes the starter circuit of the vehicle, and a compression spring urging the movable contact plate towards the fixed contact plate, said spring being so shaped and connected that it also acts as a torsion spring urging the movable plate from the second position towards the first position.
  • FIGURE 1 is a sectional side view of an ignition switch
  • FIGURE 2 is a sectional view on the line 22 in FIGURE 1
  • FIG- URE 3 is an end view of the switching in the direction of arrow A in FIGURE 1.
  • the ignition switch illustrated in the drawings is of the key-operated type having four operative positions, an oil position in which the key may be removed from the switch, a first position, achieved by turning the key clockwise, in which the ignition and auxiliary circuits of a road vehicle are energised, a second position, achieved by turning the key further in a clockwise direction, in which the starter motor circuit is energised in addition to the ignition circuit, and a third position, achieved by turning the key counter clockwise from the off position, in which only the auxiliary circuits of the vehicle are energised.
  • a cylindrical casing 11 which is stepped to provide a shoulder 18 and is closed at its wider end by a contact board 14.
  • Rotatable within the narrower cylindrical part 12 of the casing 11 is the core (not shown) of a cylinder lock, the part 12 of the casing 11 constituting the barrel of the lock.
  • Within the wider part 15 of the casing 11 is a rotor 16, rotatably supported at one end in the contact board 14 and secured at its other end to the core of the lock for rotation therewith.
  • the rotor 16 is moulded in a synthetic resin material and is formed with a head 17 of substantially elliptical configuration (FIGURE 2).
  • the head 17 abuts against the shoulder 18 of the casing 11, and extending axially from the head is a hollow substantially cylindrical shank 19, formed with a pair of diametrically opposite longitudinally extending flats (not shown) and a longitudinally extending slot 22 the end of the shank 19' being rotatably supported in a hole 21 formed in the contact board 14.
  • annular contact plate 23 Surrounding the shank 19 is an annular contact plate 23 provided with projections 24, the hole in the plate 23 being shaped complementarily to the shank 19 so that the plate 23 rotates therewith.
  • the contact plate 23 is urged towards the contact board 14 by a spring 36, one free end 36a of which is engaged in the slot 22 in the shank 19, and the other free end 36b of which extends towards the inner wall of the casing 11.
  • the rotor 16 is provided with an axially extending bore 38 of non circular cross section with which is engaged a complementarily shaped spigot which extends from the core of the cylinder lock. By virtue of this engagement the rotor 16 is rotatable with the core of the lock.
  • a radial bore 39 containing a ball 41 which is urged by a spring 42 into engagement with an arcuate cam track 43 on the casing 11.
  • the cam track 43 comprises three angularly spaced depressions 44, 45, 46.
  • the key is turned in a clockwise direction, the ball 41 engages the depression 46 and the plate 23 bridges the input ignition and auxiliary contacts thereby completing the ignition and auxiliary circuits.
  • the end 36b of the spring 36 now engages a lug 37 formed as part of the cam track 43.
  • the key is rotated further in a clockwise direction which forces the ball 41 to ride up the ramp 47 and causes the contact plate 23 to bridge the input and starter contacts while maintaining the bridge between the input and ignition contacts.
  • An ignition switch for use in a road vehicle, comprising in combination a casing, a rotor rotatably mounted in said casing, a fixed contact plate secured to said casing, a second contact plate axially movable with respect to said rotor, a compression spring urging said second contact plate into engagement with said fixed contact plate, means coupling said second contact plate to said rotor for angular movement therewith from an oif position into a first position in which the second contact plate co-operates with the first contact plate to complete the ignition circuit of the vehicle, and a second position in which the second contact plate co-operates with the fixed contact plate to complete both the ignition circuit and the starter circuit of the vehicle, said compression spring having one end thereof coupled to a part of the switch which moves angularly, and the other end of said compression spring being engageable with the casing when the second contact plate is moved from said first position to said second position, whereby movement of said second plate from said first position to said second position stresses said compression spring in torsion so that the spring urges the

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Switches With Compound Operations (AREA)
  • Push-Button Switches (AREA)
US609956A 1966-02-17 1967-01-17 Ingition switches Expired - Lifetime US3359383A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7073/66A GB1164433A (en) 1966-02-17 1966-02-17 Key-Operated Switches

Publications (1)

Publication Number Publication Date
US3359383A true US3359383A (en) 1967-12-19

Family

ID=9826103

Family Applications (1)

Application Number Title Priority Date Filing Date
US609956A Expired - Lifetime US3359383A (en) 1966-02-17 1967-01-17 Ingition switches

Country Status (4)

Country Link
US (1) US3359383A (ja)
JP (1) JPS4316690B1 (ja)
FR (1) FR1508811A (ja)
GB (1) GB1164433A (ja)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3458678A (en) * 1968-01-25 1969-07-29 Honeywell Inc Control apparatus
US3511952A (en) * 1967-05-15 1970-05-12 Lucas Industries Ltd Electrical switches
US3515832A (en) * 1967-05-26 1970-06-02 Lucas Industries Ltd Thrust washers for use with helically wound springs and improved ignition switches utilising such thrust washers
US4049932A (en) * 1975-06-04 1977-09-20 Neiman, S.A. Safety device for a rotary starter switch for an automobile vehicle
US6345464B1 (en) * 1999-01-13 2002-02-12 Surefire, Llc Firearms with target illuminators, electric switching devices and battery power sources
US6578447B1 (en) * 2002-03-11 2003-06-17 The Boeing Company Rotary indexing apparatus and related methods
US6675521B1 (en) * 2002-11-18 2004-01-13 Surefire, Llc Apparatus and method for adjusting orientation offset of a light beam generator
US20040113561A1 (en) * 2002-11-29 2004-06-17 Ngk Insulators, Ltd. Electron emitter and light emission element
US20160306378A1 (en) * 2015-04-15 2016-10-20 Alps Electric Co., Ltd. Rotary input operation device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4528545A (en) * 1984-01-26 1985-07-09 Sperry Corporation Multi-position return to center potentiometer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1713142A (en) * 1927-06-13 1929-05-14 Delco Remy Corp Lock switch

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1713142A (en) * 1927-06-13 1929-05-14 Delco Remy Corp Lock switch

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3511952A (en) * 1967-05-15 1970-05-12 Lucas Industries Ltd Electrical switches
US3515832A (en) * 1967-05-26 1970-06-02 Lucas Industries Ltd Thrust washers for use with helically wound springs and improved ignition switches utilising such thrust washers
US3458678A (en) * 1968-01-25 1969-07-29 Honeywell Inc Control apparatus
US4049932A (en) * 1975-06-04 1977-09-20 Neiman, S.A. Safety device for a rotary starter switch for an automobile vehicle
US6345464B1 (en) * 1999-01-13 2002-02-12 Surefire, Llc Firearms with target illuminators, electric switching devices and battery power sources
US6578447B1 (en) * 2002-03-11 2003-06-17 The Boeing Company Rotary indexing apparatus and related methods
US6675521B1 (en) * 2002-11-18 2004-01-13 Surefire, Llc Apparatus and method for adjusting orientation offset of a light beam generator
US20040113561A1 (en) * 2002-11-29 2004-06-17 Ngk Insulators, Ltd. Electron emitter and light emission element
US20160306378A1 (en) * 2015-04-15 2016-10-20 Alps Electric Co., Ltd. Rotary input operation device
US9791884B2 (en) * 2015-04-15 2017-10-17 Alps Electric Co., Ltd. Rotary input operation device

Also Published As

Publication number Publication date
JPS4316690B1 (ja) 1968-07-15
GB1164433A (en) 1969-09-17
FR1508811A (fr) 1968-01-05

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