Keyless entry system for automotive devices including steering lock device with compact, portable wireless code transmitter

• US 4,761,645 A
• Filed: 02/27/1985
• Issued: 08/02/1988
• Est. Priority Date: 03/01/1984
• Status: Expired due to Term

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Mochida, Haruo
• Primary Examiner(s): Weldon, Ulysses
• Application Number:
  US06/706,281
• Time in Patent Office: 1,252 Days
• Field of Search: 70/252, 70/256, 70/257, 180/287, 307/10 AT, 340/572, 340/825.3, 340/825.31, 340/825.32, 340/825.34, 340/825.69, 340/815.72, 361/171, 361/172
• US Class Current: 340/5.62
• CPC Class Codes: B60R 25/246 characterised by the challenge triggering
• CPC Class Codes: G07C 2009/00531 immobilizer
• CPC Class Codes: G07C 2009/00539 anti-theft
• CPC Class Codes: G07C 2009/00547 starting ignition
• CPC Class Codes: G07C 2009/00793 by Hertzian waves
• CPC Class Codes: G07C 2209/63 Comprising locating means for detecting the position of the data carrier, i.e. within the vehicle or within a certain distance from the vehicle
• CPC Class Codes: G07C 9/00309 operated with bidirectional data transmission between data carrier and locks

Abstract

A keyless entry system, is associated with a steering lock device. The steering lock device includes an electrically operated actuator for operating the steering lock device between locking and unlocking positions. Steering locking and unlocking operation is triggered by a predetermined vehicle operation, such as closing of the vehicular doors. A predetermined steering lock condition is checked as triggered the steering locking and unlocking operation. Steering locking and unlocking operation is carried out when the operation is triggered and the steering lock condition is satisfied.

Claims

1. A keyless entry system for an automotive vehicle for selectively operating various vehicle devices including a door lock mechanism and a steering lock mechanism, comprising:

a portable wireless transmitter adapted to transmit a unique code indicative signal encoded to carry a first preset unique code stored in said transmitter

actuators, each associated with corresponding vehicle devices for operating the latter to a desired state, said actuators including a steering lock actuator associated with said steering lock mechanism for operating the latter between a locking state and an unlocking state;

manual switches, manually operable for activating said keyless entry system and for signalling said keyless entry system to operate a corresponding one of said vehicle device; and

a controller mounted on the vehicle and responsive to manual operation of at least one of said manual switches to transmit a demand signal for triggering said transmitter, and receiving said unique code indicative signal transmitted from said transmitter, said controller comparing the received unique code with a second preset code, and producing a control signal to be fed to one of said actuators corresponding to said at least one of said manual switches operated only when the received unique code matches said second preset code, for operating one of said vehicle devices corresponding to said at least one of said manual switches, said controller being detective of said transmitter moving out of a given transmission range from said vehicle to transmit said control signal to said steering lock actuator for performing a steering locking operation.

2. The keyless entry system as set forth in claim 1, further comprising a first detector which is detective of an engine stopped condition and produces a first detector signal when said engine stopped condition is detected, said controller further responsive to said first detector signal for transmitting said control signal to said steering lock actuator.

3. The keyless entry system as set forth in claim 1, further comprising a first detector which is detective of a vehicle stopped condition and produces a first detector signal when said vehicle stopped condition is detected, said controller further responsive to said first detector signal for transmitting said control signal to said steering lock actuator.

4. The keyless entry system as set forth in claim 1, further comprising a first detector which is detective of an engine stopped and a vehicle stopped condition and produces a first detector signal when the engine stopped and the vehicle stopped condition are both detected, said controller further responsive to said first detector signal for transmitting said control signal to said steering lock actuator.

5. The keyless entry system as set forth in claim 1, further comprising a first detector for detecting a door close position for outputting a first detector signal and wherein said controller receives said first detector signal for producing said control signal for operating said steering lock actuator only when said first detector signal is present and said unique code of said unique code indicative signal produced in repsonse to manual operation of said at least one of said manual switches corresponding to said steering lock actuator matches said second preset code.

6. The keyless entry system as set forth in claim 5, further comprising a second detector for detecting a steering lock condition for outputting a second detector signal when said steering lock condition is detected, and wherein said controller further receives said second detector signal for producing said control signal for operating said steering lock actuator for unlocking said steering lock mechanism when said second detector signal is present and for operating said steering lock actuator for locking said steering lock mechanism when said second detector signal is absent.

7. The keyless entry system as set forth in claim 6, wherein said manual switches includes a first switch corresponding to a door lock actuator for locking and unlocking a door lock for a door at a side of the driver'"'"'s seat, said controller responsive to said manual operation of said first swtich for controlling said door lock actuator and for operating said steering lock actuator when said door lock actuator is operated for locking said door.

8. A keyless entry system for an automotive vehicle for selectively operating first and second vehicle devices, comprising:

a portable wireless transmitter adapted to transmit a unique code indicative radio signal encoded to carry a first preset unique code stored in said transmitter and identifying said transmitter;

a first actuator associated with said first device for operating said first device at least between a first and a second position;

a second actuator aassociated with said second device for operating said second device at least between a first and a second position;

a first manual switch manually operable for activating said keyless entry system and for signalling said keyless entry system to operate said first device;

a second manual switch manually operable for activating said keyless entry system and for signalling said keyless entry system to operate said second device; and

a controller mounted on the vehicle and responsive to manual operation of at least one of said first and second manual switches to transmit a demand signal for triggering said transmitter, and receiving said unique code indicative signal transmitted from said transmitter, said controller comparing the received unique code with a second preset code, and producing a control signal to be fed to one of said first and second actuators selectively, said controller selecting one of said first and second actuators according to input from one of said first and second manual switches being depressed.

9. A keyless entry system for an automotive vehicle for selectively operating a plurality of vehicle devices including a steering lock mechanism, comprising:

a portable wireless transmitter adapted to transmit a unique code indicative radio signal encoded to carry a first preset unique code stored in said transmitter and identifying said transmitter;

actuators, each associated with said one of said vehicle devices for operating said one of said vehicle devices at least between a first and a second position;

manual switches manually operable for activating said keyless entry system and for signalling said keyless entry system to operate at least one of said vehicle devices;

a controller mounted on the vehicle and responsive to manual operation of at least one of said manual switches to transmit a demand signal for triggering said transmitter, and receiving said unique code indicative signal transmitted from said transmitter, said controller comparing the received unique code with a second preset code, and producing a control signal to be fed to one of said actuators selectively, said controller selecting one of said first and second actuators according to input from one of said manual switches being depressed and said controller being detective of said transmitter moving away from the vehicle to be out of a given transmission range to transmit said control signal to said steering lock actuator for performing a steering locking operation.