Internal key-in-ignition-warning/ignition switch

Details Internal key-in-ignition-warning/ignition switch Internal key-in-ignition-warning/ignition switch

1990-10-23

1991-11-19

Ng, Jin F.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340438, 307 103, B60Q 100

Patent

active

050669419

ABSTRACT:
A key-in-ignition warning switch (10) is integrally mounted within an ignition switch (11). The warning switch (10), positioned along the rotational axis (17) of the ignition switch (10), comprises an inner plunger (15), an outer plunger (16), a plunger spring (28), and a housing spring (31). As the ignition key (26) is inserted into the key cylinder (12), a linkage (14) between the key cylinder (12) and the warning switch (10) pushes against the inner plunger (15), which in turn pushes against the outer plunger (16). As the key (26) is inserted completely into the key cylinder (12), contacts (24,25) attached to the plungers (15,16) make contact with terminals (34,36) located within a terminal block (35) attached to the ignition switch (11). When both plunger contacts (24,25) and mating terminals (34,36) are in contact, the key-in-ignition warning circuit is completed, thereby enabling the associated warning devices.

REFERENCES:
patent: 3641489 (1972-02-01), Shimomura
patent: 3646511 (1972-02-01), Holt
patent: 3654600 (1972-04-01), Yamamoto
patent: 3703704 (1972-11-01), Schiesterl

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