US3358093A - Ignition switches - Google Patents

Ignition switches Download PDF

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Publication number
US3358093A
US3358093A US613656A US61365667A US3358093A US 3358093 A US3358093 A US 3358093A US 613656 A US613656 A US 613656A US 61365667 A US61365667 A US 61365667A US 3358093 A US3358093 A US 3358093A
Authority
US
United States
Prior art keywords
casing
rotor
ignition
switch
roller
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
US613656A
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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 US3358093A publication Critical patent/US3358093A/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 ignition switches for road vehicles, comprising as shown in the accompanying drawing, a casing having a rotor rotatably mounted therein, cam means acting to locate the rotor at any one of a number of positions relative to the casing, a contact as sembly arranged to complete circuits in certain positions of the rotor, and an additional switch having a fixed part carried by the casing and a movable part carried by the This invention relates to ignition switches for use in road vehicles.
  • a switch according to the invention includes a casing, a rotor, cam means acting to locate the rotor at any one of a number of positions relative to the casing, a contact assembly arranged to complete circuits in certain positions of the rotor, and an additional switch having a fixed part carried by the casing and a movable part coupled to the rotor for movement therewith.
  • FIGURE 1 is a sectional side view of an ignition switch
  • FIGURE 2 is a sectional view on the line 22 inFIGURE 1
  • FIGURE 3 is an end view of the switch viewed in the direction indicated by the arrow A in FIGURE 1
  • FIGURE 4 is a fragmentary perspective of part of the switch
  • FIGURE 5 is a fragmentary sectional view on the line 5-5 in FIGURE 1.
  • the ignition switch illustrated in the drawings if of the key operated type having four operative positions, an off position in which the key may be removed from the switch, a first position achieved by rotating the key in a clockwise direction, in which ignition and auxiliary circuits of a road vehicle are energised, a second position, achieved by rotating the key further in a clockwise direction, in which a starter motor circuit of the vehicle is also energised, and a third position, achieved by rotating the key in a counterclockwise direction from the off position, in which only the auxiliary circuit is energised.
  • a cylindrical casing 11 which is stepped to provide a shoulder 18, and is closed at its wider end by an annular contact board 14.
  • a hole in the contact board 14 is closed by a resilient cup shaped member 51 mounted in a synthetic resin material.
  • the member 51 is formed with a pair of arcuate outwardly extending flanges 52 at its open end, which engage shoulders 15a formed in the inner face of the board 14 to prevent withdrawal of the member 51.
  • a pair of rivets 53, 54 extending through the base of the member 51 and secure a pair of terminal blades 55, 56 to the outer face thereof, the heads of the rivets 53, 54 forming contacts 53a, 54a within the member 51.
  • 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.
  • a rotor 16 Within the Wider part 11a of the casing 11 is a rotor 16, rotatably supported at one end in the member 51 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 17 is a hollow substantially cylindrical shank 19, having a pair of diametrically opposite, longitudinally extending flats (not shown), the end of the shank 19 being rotatably supported in the member 51.
  • the shank 19 is also formed with a pair of longitudinally extending diametrically opposite slots 22, in which are engaged the ends of an electrically conductive roller 57.
  • a spring 58 housed within the shank 19, urges the roller 57 into contact with cam forms 59, 59a moulded on the inner wall of the member 51.
  • 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.
  • Associated with the board 14 are four contacts 26, 27, 28, 29 each of which incorporates one or more terminal blades positioned externally of the plate 14 for connection to external circuits, and a contact portion on the interior of the plate, the contact portions extending into holes in an insulating plate 35 over which the projections 24 move.
  • the contact plate 23 is urged towards the contact board 14 by a spring 36, one free end 36a of which is engaged in a further longitudinal slot 22a 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.
  • the cam track 43 comprises three angularly spaced depressions 44, 45, 46 and a ramp 47.
  • the ball 41 is engaged with the depression 45 of the cam track 43 and the projections 24 of the contact plate 23 engage with the insulating member 35.
  • the roller 57 is supported clear of the contacts 53a, 54a by the cam forms 59, 59a against which the roller 57 is urged by the spring 58.
  • an ignition key is inserted into the core of the lock and rotated in a counterclockwise direction. Since the core of the lock, the rotor 16, the contact plate 23 and the roller 57 are not rotatable relatively to one another, angular movement of the key results in angular movement of the plate 23 relatively to the board 14 and angular movement of the roller 57 relatively to the cam forms 59, 59a of the member 51. By rotating the key in a counterclockwise direction the plate 23 is moved to a position in which it bridges the input and auxiliary contacts and so completes the auxiliary circuit.
  • the cam forms 59, 59a of the member 51 are such that the roller 57 is maintained in a position clear of the contacts 53a, 54a.
  • the ball 41 engages the depression 44 which prevents accidental rotation of the key and consequently the plate 23.
  • 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 ends 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.
  • the cam forms 59, 59a include a pair of diametrically opposite depressions in which the ends of the roller 57 locate when the ignition circuit is complete the roller 57 is urged by the spring 58 into the depressions. These depressions are suificiently deep to ensure that the roller 57 bridges the contacts 53a, 54a so as to complete a circuit therethrough. Thus the switch completes two separate circuits and in eflect acts as a double pole ignition switch.
  • the part 12 of the casing 11 is externally screw threaded to facilitate mounting of the switch on the dash board or bulkhead of the road vehicle.
  • An ignition switch comprising in combination a first hollow casing, a rotor, means mounting the rotor for angular movement within said first casing, a contact board closing one end of said first casing, said contact board having a central hole formed therein, movable contacts carried by the rotor, co-operating detent means on said first casing and said rotor serving to define operative positions of the switch, said movable contacts engaging respective fixed contacts carried by said contact board in said operative positions, a second casing non-rotatably engaged in said hole in the contact board, a pair of fixed contacts carried by said second casing, a conductive roller carried by said rotor and located within said second casing, a cam form on the inner surface of said second casing, and means urging said roller into engagement with said cam form, said roller riding on said cam form as the rotor is moved angularly, and the shape of said cam form being such that said roller bridges the pair of fixed contacts carried by said second casing in one of the operative positions of the switch.

Landscapes

  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Push-Button Switches (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
US613656A 1966-02-17 1967-02-02 Ignition switches Expired - Lifetime US3358093A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7075/66A GB1166492A (en) 1966-02-17 1966-02-17 Key Operated Switches

Publications (1)

Publication Number Publication Date
US3358093A true US3358093A (en) 1967-12-12

Family

ID=9826147

Family Applications (1)

Application Number Title Priority Date Filing Date
US613656A Expired - Lifetime US3358093A (en) 1966-02-17 1967-02-02 Ignition switches

Country Status (5)

Country Link
US (1) US3358093A (ja)
JP (1) JPS4417552Y1 (ja)
DE (1) DE1613947A1 (ja)
FR (1) FR1510666A (ja)
GB (1) GB1166492A (ja)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3530697A (en) * 1967-10-05 1970-09-29 Bertrand Antoine Warnod Locking device,in particular for theft prevention on automotive vehicles
US3609260A (en) * 1968-07-15 1971-09-28 Brevets Neiman Sa Soc D Expl D Cylindrical switch for ignition and starting of engines and other uses
US3639708A (en) * 1970-08-13 1972-02-01 Stanley C Wolniak Rotary switch lock
US3819883A (en) * 1971-11-12 1974-06-25 Lucas Electrical Co Ltd Automotive rotary switch with intermediate time delay means biasing a contact in non-operative position
US4283608A (en) * 1980-01-16 1981-08-11 Illinois Tool Works Inc. Electrical keylock switch
US6797907B1 (en) 2003-11-18 2004-09-28 Emerson Electric Co. Rotary switch assembly

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5860829U (ja) * 1981-10-20 1983-04-23 株式会社サンポウロツク キ−スイツチ
DE3242720A1 (de) * 1981-11-28 1983-07-07 Bär Elektrowerke GmbH & Co KG, 5885 Schalksmühle Elektrischer schalter
DE3538536C2 (de) * 1985-10-30 1995-04-13 Baer Elektrowerke Gmbh & Co Kg Elektrischer Drehschalter
JPS62173133U (ja) * 1986-04-22 1987-11-04

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1622707A (en) * 1926-01-27 1927-03-29 Harry A Douglas Combined lighting and ignition switch
US2046831A (en) * 1931-07-06 1936-07-07 Yale & Towne Mfg Co Lock
US2868906A (en) * 1956-06-29 1959-01-13 Indak Mfg Corp Key operated switch

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1622707A (en) * 1926-01-27 1927-03-29 Harry A Douglas Combined lighting and ignition switch
US2046831A (en) * 1931-07-06 1936-07-07 Yale & Towne Mfg Co Lock
US2868906A (en) * 1956-06-29 1959-01-13 Indak Mfg Corp Key operated switch

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3530697A (en) * 1967-10-05 1970-09-29 Bertrand Antoine Warnod Locking device,in particular for theft prevention on automotive vehicles
US3609260A (en) * 1968-07-15 1971-09-28 Brevets Neiman Sa Soc D Expl D Cylindrical switch for ignition and starting of engines and other uses
US3639708A (en) * 1970-08-13 1972-02-01 Stanley C Wolniak Rotary switch lock
US3819883A (en) * 1971-11-12 1974-06-25 Lucas Electrical Co Ltd Automotive rotary switch with intermediate time delay means biasing a contact in non-operative position
US4283608A (en) * 1980-01-16 1981-08-11 Illinois Tool Works Inc. Electrical keylock switch
US6797907B1 (en) 2003-11-18 2004-09-28 Emerson Electric Co. Rotary switch assembly

Also Published As

Publication number Publication date
JPS4417552Y1 (ja) 1969-07-30
FR1510666A (fr) 1968-01-19
DE1613947A1 (de) 1970-06-18
GB1166492A (en) 1969-10-08

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