Automatic power door lock system
First Claim
1. An automatic power door lock system for automatically locking door locks of a motor vehicle after a door is opened or becomes ajar while the ignition of the vehicle is on and after the vehicle reaches a predetermined speed, said system comprising:
- (a) speed sensor means connected to a distance sensor of the vehicle for providing to the system a pulse signal indicative of the speed of the vehicle so that the system will know when the vehicle reaches the predetermined speed;
(b) door jamb switch means mechanically connected to the door of the vehicle for providing an electrical signal to the system indicative of the door being opened;
(c) a door ajar switch mechanically connected to the door and having a switch contact connected between an electrical signal source and said door jamb switch means for providing an electrical signal to the system indicative of the door being in an ajar position; and
(d) a drive means connected to the door lock for driving the lock to a lock position; and
(e) bi-stable latch means interconnected to said speed sensor means, said door jamb switch means and said drive means responsive to the electrical signal from said door jamb switch means indicating the door being opened or ajar and to the speed of the vehicle pulse signal from said speed sensor means, for providing an electrical signal to said drive means to cause said drive means to drive the door lock to a lock position when the vehicle reaches the predetermined speed.
3 Assignments
0 Petitions
Accused Products
Abstract
Circuits are provided that automatically lock electric power door locks of a motor vehicle at a predetermined speed.
Also, the system includes circuits for automatically relocking the electric power door locks if the doors come open or ajar. Provisions are made to inhibit the dome light switch which turns on the dome light from actuating the automatic door lock system and automatically locking the doors since the door jamb switch and the dome light switch are usually connected in the same circuit to turn on the dome light.
22 Citations
5 Claims
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1. An automatic power door lock system for automatically locking door locks of a motor vehicle after a door is opened or becomes ajar while the ignition of the vehicle is on and after the vehicle reaches a predetermined speed, said system comprising:
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(a) speed sensor means connected to a distance sensor of the vehicle for providing to the system a pulse signal indicative of the speed of the vehicle so that the system will know when the vehicle reaches the predetermined speed; (b) door jamb switch means mechanically connected to the door of the vehicle for providing an electrical signal to the system indicative of the door being opened; (c) a door ajar switch mechanically connected to the door and having a switch contact connected between an electrical signal source and said door jamb switch means for providing an electrical signal to the system indicative of the door being in an ajar position; and (d) a drive means connected to the door lock for driving the lock to a lock position; and (e) bi-stable latch means interconnected to said speed sensor means, said door jamb switch means and said drive means responsive to the electrical signal from said door jamb switch means indicating the door being opened or ajar and to the speed of the vehicle pulse signal from said speed sensor means, for providing an electrical signal to said drive means to cause said drive means to drive the door lock to a lock position when the vehicle reaches the predetermined speed. - View Dependent Claims (2, 3, 4, 5)
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Specification