US3770916A - Vehicle ignition switch - Google Patents

Vehicle ignition switch Download PDF

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Publication number
US3770916A
US3770916A US00252744A US3770916DA US3770916A US 3770916 A US3770916 A US 3770916A US 00252744 A US00252744 A US 00252744A US 3770916D A US3770916D A US 3770916DA US 3770916 A US3770916 A US 3770916A
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US
United States
Prior art keywords
plunger
housing
switch
fixed contacts
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
US00252744A
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English (en)
Inventor
J Cardwell
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 US3770916A publication Critical patent/US3770916A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
    • B60R25/002—Locking of control actuating or transmitting means
    • B60R25/003—Locking of control actuating or transmitting means locking of control actuating means
    • B60R25/007—Locking of control actuating or transmitting means locking of control actuating means of hand actuated control means

Definitions

  • the switch has a housing [30] Foreign Application Priority Data and the plunger, which is rotatable relative to the hous- 12 1971 G ⁇ B 14 540/71 ing, extends from the housing and slidable relative dy ma n am thereto into and out of a locking position,
  • the housing U 8 Cl 200/44 carries fixed contacts for selective engagement by mov- [51] In ⁇ .0 27/00 able Contacts carried y the p g p rotary move Fie'ld R 44 42 R ment of the latter.
  • a slot in the housing is engaged by 200/16 a projection carried by the plunger so that, in order to rotate the plunger to a position in which the fixed con- References Cited tacts are not engaged by any of the movable contacts,
  • SHEET 20F 2 VEHICLE IGNITION SWITCH This invention relates to a vehicle ignition switch which also provides an actuating element for a locking arrangement for a gearbox on the vehicle.
  • a vehicle ignition switch for actuating a locking arrangement for a vehicle gearbox, said switch comprising a housing, a plunger slidable and rotatable in the housing, said plunger being engageable at one position of its sliding travel with said locking arrangement to actuate the latter, means for biassing the plunger away from the said one position of its sliding travel, a plurality of fixed contacts carried by said housing, a plurality of movable contacts connected with the plunger for rotary movement relative to the fixed contacts, a co-operating projection and slot means on said plunger and housing whereby the said plunger can be moved to said one position of its sliding travel when said movable contacts are in predetermined positions relative to said fixed contacts.
  • FIG. 1 is a longitudinal section through a switch
  • FIG. 2 is a section on line 2-2 in FIG. 1,
  • FIG. 3 shows diagrammatically the switch contact and terminal arrangement
  • FIG. 4 is a view of an associated gearbox locking arrangement.
  • the switch has a housing within which a plunger 11 is slidable and rotatable.
  • Plunger 11 includes a barrel portion 12 which incorporates a known type of locking'mechanism operable by a vehicle ignition key.
  • Plunger 11 also has a portion 13 of square section which is slidable within a contact carrier 14 which is rotatable with the plunger 11.
  • Housing 10 supports fixed terminals l5,l6,l7,18. Terminals 15,16 and 17 have associated fixed contact areas 19,20,21, respectively.
  • a conductive washer-like member 22 from which three integral equi-spaced contact parts 23 radially extend. Member 22 is biassed so that contact parts 23 are urged axially towards fixed contact areas 19,20,21.
  • Carrier 14 supports a springloaded ball 24 engageable with -co-operating detent means, not showing on housing 10 to arrest carrier 14 in three of four angular positions A,B,C,D, as shown in FIG. 3, position A of carrier 14 being shown in dotted outline.
  • Plunger 11 includes a portion 25 extending from housing 10 at the end thereof remote from barrel portion 12. A radial projection 26 on plunger 11 extends into an arcuate slot 27 within housing 10. Slot 27 includes a step 28 which is positioned so that plunger 11 must be moved downwards, as seen in FIG. 1, in order to be rotated to bring carrier 14 to position A. Plunger 11 is biassed upwards by a spring 29. Upward movement of plunger 1 1 is restrained by engagement of projection 26 with the upper face of slot 27 and also by en gagement of a circlip 30 on plunger 11 with a plate 44 forming part of housing 10.
  • the switch is associated with a gear-box arrangment, as for example that described in our co-pending Application No. 4884/71 and shown somewhat diagrammatically in FIG. 4.
  • Three selector rods 31,32,33 are slidable in a part 34 which has a bore 35.
  • Rods 31,32 have transverse through bores 36,37 respectively, and rod 33 has a recess 38, bores 36,37 and recess 38 being aligned with each other and with bore 36 when a given gear (conveniently neutral) is selected.
  • Plungers 39,40 are respectively slidable in bores 36,37 and balls 41,42,43 are slidable in bore 35.
  • Plunger 11 is engageable with ball 41 to urge the latter towards plunger 39 by cam action as shown, or alternatively by direct axial movement as shown in '1 1a in FIG. 4.
  • a vehicle ignition switch for actuating a locking arrangement for a vehicle gearbox, said switch comprising a housing, a plunger slidable and rotatable in the housing, said plunger being engageable at one position of its sliding travel with said locking arrangement to actuate the latter, means for biassing the plunger away from the said one position of its sliding travel, a plurality of fixed contacts carried by said housing, a plurality of movable contacts connected with the plunger for rotary movement relative to the fixed contacts, a co-operating projection and slot means on said plunger and housing whereby the said plunger can be moved to said one position of its sliding travel when said movable contacts are in predetermined positions relative to said fixed contacts, and wherein the plunger has a portion of non-circular cross-section internally of movable contacts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Push-Button Switches (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Lock And Its Accessories (AREA)
US00252744A 1971-05-12 1972-05-12 Vehicle ignition switch Expired - Lifetime US3770916A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1454071A GB1378301A (en) 1971-05-12 1971-05-12 Vehicle ignition switch

Publications (1)

Publication Number Publication Date
US3770916A true US3770916A (en) 1973-11-06

Family

ID=10043053

Family Applications (1)

Application Number Title Priority Date Filing Date
US00252744A Expired - Lifetime US3770916A (en) 1971-05-12 1972-05-12 Vehicle ignition switch

Country Status (8)

Country Link
US (1) US3770916A (es)
JP (1) JPS5035304B1 (es)
AU (1) AU4217272A (es)
DE (1) DE2223096A1 (es)
ES (1) ES180599Y (es)
FR (1) FR2139470A5 (es)
GB (1) GB1378301A (es)
IT (1) IT957802B (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4558193A (en) * 1983-03-31 1985-12-10 C & K Components, Inc. Switch lock

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3616122C2 (de) * 1986-05-13 1997-05-15 Ymos Ag Ind Produkte Lenk- und Zündschloß

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2046831A (en) * 1931-07-06 1936-07-07 Yale & Towne Mfg Co Lock
US3145700A (en) * 1958-02-28 1964-08-25 Bendix Corp Electrical apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2046831A (en) * 1931-07-06 1936-07-07 Yale & Towne Mfg Co Lock
US3145700A (en) * 1958-02-28 1964-08-25 Bendix Corp Electrical apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4558193A (en) * 1983-03-31 1985-12-10 C & K Components, Inc. Switch lock

Also Published As

Publication number Publication date
GB1378301A (en) 1974-12-27
DE2223096A1 (de) 1972-11-23
FR2139470A5 (es) 1973-01-05
ES180599Y (es) 1974-01-01
AU4217272A (en) 1973-11-15
ES180599U (es) 1973-02-16
IT957802B (it) 1973-10-20
JPS5035304B1 (es) 1975-11-14

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