Door lock control system with a dead lock device for an automotive vehicle

• US 5,887,466 A
• Filed: 11/15/1996
• Issued: 03/30/1999
• Est. Priority Date: 11/16/1995
• Status: Expired due to Fees

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Yoshizawa, Takashi
• Primary Examiner(s): Gall, Lloyd A.
• Application Number:
  US08/751,099
• Time in Patent Office: 865 Days
• Field of Search: 70/264, 70/267-271, 70/277, 70/257, 292/DIG. 27, 292/201, 340/426, 340/542, 307/10.2
• US Class Current: 70/257
• CPC Class Codes: B60R 25/1001 Alarm systems associated with another car fitting or mechanism, e.g. door lock or knob, pedals features related to the general power supply B60R25/1018
• CPC Class Codes: B60R 25/1009 Sonic sensors; Signal treatment therefor
• CPC Class Codes: E05B 77/28 for anti-theft purposes, e.g. double-locking or super-locking
• CPC Class Codes: E05B 77/48 by electrical means
• CPC Class Codes: E05B 81/06 using rotary motors
• CPC Class Codes: E05B 81/16 operating on locking elements for locking or unlocking action
• CPC Class Codes: E05B 81/54 Electrical circuits for locking several wings simultaneously E05B77/48
• CPC Class Codes: Y10T 292/1082 Motor
• CPC Class Codes: Y10T 70/5978 With switch
• CPC Class Codes: Y10T 70/65 Central control
• CPC Class Codes: Y10T 70/7006 Predetermined time interval controlled
• CPC Class Codes: Y10T 70/7062 Electrical type [e.g., solenoid]

Abstract

A door lock system includes a door lock mechanism, and a connecting mechanism whereby the door lock mechanism and the door lock knob are connected to permit unlocking using the door lock knob, when the motion sensor detects movement inside the vehicle within a predetermined time after the door lock mechanism and the door lock knob are disconnected to prohibit unlocking using the door lock knob.

Claims

1. A door lock control system with a dead lock device for an automotive vehicle, comprising:

a door lock mechanism for locking and unlocking a vehicular door;

a door lock knob adapted to be disposed inside said vehicle to lock and to unlock said door;

a connecting mechanism placed between said door lock mechanism and said door lock knob, said connecting mechanism having a first position and a second position, wherein in said first position, said door lock mechanism is permitted locking and unlocking of said door using said door lock knob, while in said second position, said door lock mechanism is prevented from unlocking using said door lock knob;

a motion sensor for detecting movement inside said vehicle;

a connecting actuator for selectively positioning said connecting mechanism in one of said first position and said second position, said connecting actuator arranged to move said connecting mechanism from said second position to said first position, when said motion sensor detects movement inside said vehicle after said connecting mechanism is positioned in said second position;

a locking actuator, a lock controller, a first connection controller, a second connection controller;

said locking actuator being activated by a signal for positioning said door lock mechanism in one of a locking condition and an unlocking condition;

said lock controller outputting one of a lock signal and an unlock signal to said locking actuator;

said connecting mechanism positioned between said door lock mechanism and said door lock knob, said connecting mechanism having a first position and a second position, in said first position, said door lock mechanism and said door lock knob being connected to permit unlocking of said door using said door lock knob, and, in said second position, said door lock mechanism and said door lock knob being disconnected to prevent unlocking of said door using said door lock knob;

said connecting actuator positioning said connecting mechanism in one of said first position and said second position;

said first connection controller outputting to said connecting actuator one of a first signal to place said connecting mechanism in said first position and a second signal to place said connecting mechanism in said second position;

said second connection controller outputting said first signal to said connecting actuator to move said connecting mechanism from said second position to said first position, when said motion sensor detects movement inside said vehicle within a predetermined time after said vehicular door is locked and said connecting mechanism is positioned in said second position;

an invasion sensor for detecting an invasion into said vehicle; and

an anti-theft controller for monitoring said vehicle by said invasion sensor after a predetermined time has elapsed since said vehicular door is locked and said connecting mechanism is placed in said second position, when said motion sensor detects movement inside said vehicle during said predetermined time;

said anti-theft controller monitors said vehicle with said invasion sensor and said motion sensor after a predetermined time has elapsed since said vehicular door is locked and said connecting mechanism is placed in said second position, when either said motion sensor does not detect movement inside said vehicle or said invasion sensor does not detect said invasion during said predetermined time.

2. The door lock control system as defined in claim 1, wherein:

said anti-theft controller ignores the status of said motion sensor when said motion sensor detects movement inside said vehicle during said predetermined time.

3. The door lock control system as defined in claim 1, wherein:

said motion sensor is disabled from monitoring said vehicle after said predetermined time has elapsed, when said motion sensor detects movement inside said vehicle during said predetermined time.

4. The door lock control system as defined in claim 1, wherein:

said anti-theft controller disconnects said motion sensor after said predetermined time has elapsed, when said motion sensor detects movement inside said vehicle during said predetermined time.

5. The door lock control system as defined in claim 1, wherein:

said motion sensor includes an ultrasonic sensor adopted to be disposed inside said vehicle.

6. The door lock control system as defined in claim 1, wherein:

said motion sensor includes an infrared sensor adopted to be disposed inside said vehicle.

7. The door lock control system as defined in claim 1, wherein said motion sensor includes:

a camera; and

a processor for processing the image monitored by said camera.

8. The door lock control system as defined in claim 1, wherein said motion sensor includes:

a light emitter; and

an optical sensor receiving said light emitted by said light emitter.

9. The door lock control system as defined in claim 1, wherein:

said invasion sensor includes a switch for detecting whether said door is open or closed.

10. The door lock control system as defined in claim 9, wherein said invasion sensor further includes:

a switch for detecting whether an engine hood of said vehicle is open or closed;

a switch for detecting whether a trunk lid of said vehicle is open or closed; and

a switch for detecting whether a key cylinder disposed on said door is removed from said vehicle or not.

11. A door lock control system with a dead lock device for an automotive vehicle comprising:

a door lock mechanism for locking and unlocking a vehicular door;

a lock securing mechanism for securing said door lock mechanism in a secured condition;

a motion sensor for detecting movement inside said vehicle;

a lock securing controller for releasing said lock securing mechanism from said secured condition, when said motion sensor detects movement inside said vehicle after said lock securing mechanism secures said door lock mechanism;

an invasion detector for detecting an invasion into said vehicle; and

a monitor controller for monitoring said vehicle with said invasion detector after a predetermined time has elapsed since said lock securing mechanism secures said door lock mechanism, when said motion sensor detects movement inside said vehicle during said predetermined time, wherein;

said monitor controller monitors said vehicle with said invasion detector and said motion sensor after a predetermined time has elapsed since said lock securing mechanism secures said door lock mechanism, when either said motion sensor does not detect movement inside said vehicle or said invasion detector does not detect said invasion during said predetermined time.

12. An automotive vehicle with a door lock control system including a dead lock device, comprising:

a door lock mechanism for locking and unlocking a vehicular door;

a door lock knob disposed inside said vehicle to lock said door and to unlock said door;

connecting means having a first position and a second position, in said first position, said door lock mechanism is permitted locking and unlocking of said door using said door lock knob, and, in said second position, said door lock mechanism is prevented from unlocking of said door using said door lock knob;

motion sensing means for detecting movement inside said vehicle;

invasion sensing means for detecting an invasion into said vehicle;

a first connection controlling means for outputting to said connecting means one of a first signal to place said connecting means in said first position and a second signal to place said connecting means in said second position;

a second connection controlling means for outputting said first signal to said connecting means to move said connecting means from said second position to said first position, when said motion sensing means detects movement inside said vehicle within a predetermined time after said vehicular door is locked and said connecting means is positioned in said second position; and

anti-theft controlling means for monitoring said vehicle by said invasion sensing means after a predetermined time has elapsed since said vehicular door is locked and said connecting means is placed in said second position, when said motion sensing means detects movement inside said vehicle during said predetermined time;

said anti-theft controlling means monitors said vehicle with said invasion sensing means and said motion sensing means after a predetermined time has elapsed since said vehicular door is locked and said connecting means is placed in said second position, when either said motion sensing means does not detect movement inside said vehicle or said invasion sensing means does not detect said invasion during said predetermined time.