AUTOMATIC VEHICLE DOOR LOCK CIRCUIT

• US 3,765,502 A
• Filed: 06/01/1972
• Issued: 10/16/1973
• Est. Priority Date: 06/01/1972
• Status: Expired due to Term

• Current Assignee: Douglas E. Mark
• Original Assignee: Douglas E. Mark
• Inventors: Mark, Douglas E.
• Primary Examiner(s): Knowles, Allen N.
• Application Number:
  US05/258,520
• Time in Patent Office: 502 Days
• Field of Search: 180/107,111,112,113,114 70/264
• US Class Current: 180/281
• CPC Class Codes: E05B 77/54 Automatic securing or unlocking of bolts triggered by certain vehicle parameters, e.g. exceeding a speed threshold triggered by vehicle collision E05B77/12
• CPC Class Codes: G01P 1/103 by comparing the value of the measured signal with one or several reference values in general G01R17/00
• CPC Class Codes: G01P 3/4807 by using circuits for the detection of the pulses delivered by the ignition system of an internal combustion engine
• CPC Class Codes: Y10T 70/65 Central control

Abstract

An automatic vehicle door lock circuit for automatically locking the doors at a predetermined speed. A set signal, produced upon the energization of this circuit, triggers a bistable multivibrator memory circuit to the condition which produces a door unlock signal upon the output thereof. An electrical vehicle speed signal, produced when the vehicle has reached the predetermined speed, and the door unlocked signal are applied across the emitter-base electrodes of a type PNP transistor which, in combination with another type PNP transistor, produce an electrical lock doors signal of a predetermined duration. Another type PNP transistor, responsive to this lock doors signal, completes an energizing circuit for the lock solenoids in each of the vehicle doors to operate the lock mechanism thereof to the door locked condition. At the conclusion of the lock doors signal, a doors locked signal is produced to trigger the bistable multivibrator memory circuit to the condition which removes the door unlocked signal from the output thereof.

Claims

1. An automatic vehicle door lock circuit for automatically locking the vehicle doors when the vehicle has reached a predetermined speed comprising in combination with a source of direct current potential, a lock and an unlock solenoid for each door which operate the lock mechanism of that door to the locked and unlocked conditions, respectively, and a manually operable door lock switch for selectively energizing said lock and unlock solenoids from said source of direct current potential, a memory circuit having first and second input circuits and an output circuit responsive to the application of an electrical signal across a selected one of said input circuits for producing an electrical door unlocked signal upon said output circuit and to the application of an electrical signal across the other one of said input circuits for removing said door unlocked signal from said output circuit, means for producing an electrical vehicle speed signal when said vehicle has reached said predetermined speed, means responsive to said door unlocked signal and said vehicle speed signal for producing an electrical lock doors signal of a predetermined duration, means responsive to said lock doors signal for completing an energizing circuit for said lock solenoids in parallel across said source of direct current potential, means responsive to the end of said lock doors signal for producing an electrical doors locked signal, and means for applying said doors locked signal across the said other one of said input circuits of said memory circuit.

2. An automatic vehicle door lock Circuit for automatically locking the vehicle doors when the vehicle has reached a predetermined speed comprising in combination with a source of direct current potential, a lock and an unlock solenoid for each door which operate the lock mechanism of that door to the locked and unlocked conditions, respectively, and a manually operable door lock switch for selectively energizing said lock and unlock solenoids from said source of direct current potential, a memory circuit having first and second input circuits and an output circuit responsive to the application of an electrical signal across a selected one of said input circuits for producing an electrical door unlocked signal upon said output circuit and to the application of an electrical signal across the other one of said input circuits for removing said door unlocked signal from said output circuit, means for producing an electrical set signal, means for applying said set signal across the said selected one of said input circuits of said memory circuit, means for producing an electrical vehicle speed signal when said vehicle has reached said predetermined speed, means responsive to said door unlocked signal and said vehicle speed signal for producing an electrical lock doors signal of a predetermined duration, means responsive to said lock doors signal for completing an energizing circuit for said lock solenoids in parallel across said source of direct current potential, means responsive to the end of said lock doors signal for producing an electrical doors locked signal, and means for applying said doors locked signal across the said other one of said input circuits of said memory circuit.

3. An automatic vehicle door lock circuit for automatically locking the vehicle doors when the vehicle has reached a predetermined speed comprising in combination with a source of direct current potential, a lock and an unlock solenoid for each door which operate the lock mechanism of that door to the locked and unlocked conditions, respectively, and a manually operable door lock switch for selectively energizing said lock and unlock solenoids from said source of direct current potential, a memory circuit having first and second input circuits and an output circuit responsive to the application of an electrical signal across a selected one of said input circuits for producing an electrical door unlocked signal upon said output circuit and to the application of an electrical signal across the other one of said input circuits for removing said door unlocked signal from said output circuit, means for producing an electrical vehicle speed signal when said vehicle has reached said predetermined speed, means responsive to said door unlocked signal and said vehicle speed signal for producing an electrical lock doors signal of a predetermined duration, means responsive to said lock doors signal for completing an energizing circuit for said lock solenoids in parallel across said source of direct current potential, means responsive to the end of said lock doors signal for producing an electrical doors locked signal, means for applying said doors locked signal across the said other one of said input circuits of said memory circuit, means responsive to the energization of said unlock solenoids through one of said manually operable door lock switches for producing an electrical unlock solenoid energized signal, means responsive to the closing of any one of said vehicle doors for producing an electrical door opened signal, and means for applying said unlock solenoid energized signal and said door opened signal across the said selected one of said input circuits of said memory circuit.

4. An automatic vehicle door lock circuit for automatically locking the vehicle doors when the vehicle has reached a predetermined speed comprising in combination with a source of direct current potential, a lock and an unlock solenoid for each door which operate the lock mechanism of that door to the locked and unlocked conditions, respectively, and a manually operabLe door lock switch for selectively energizing said lock and unlock solenoids from said source of direct current potential, a memory circuit having first and second input circuits and an output circuit responsive to the application of an electrical signal across a selected one of said input circuits for producing an electrical door unlocked signal upon said output circuit and to the application of an electrical signal across the other one of said input circuits for removing said door unlocked signal from said output circuit, means for producing an electrical set signal, means for applying said set signal across the said selected one of said input circuits of said memory circuit, means for producing an electrical vehicle speed signal when said vehicle has reached said predetermined speed, means responsive to said door unlocked signal and said vehicle speed signal for producing an electrical lock doors signal of a predetermined duration, means responsive to said lock doors signal for completing an energizing circuit for said lock solenoids in parallel across said source of direct current potential, means responsive to the end of said lock doors signal for producing an electrical doors locked signal, means for applying said doors locked signal across the said other one of said input circuits of said memory circuit, means responsive to the energization of said unlock solenoids through one of said manually operable door lock switches for producing an electrical unlock solenoid energized signal, means responsive to the closing of any one of said vehicle doors for producing an electrical door opened signal, and means for applying said unlock solenoid energized signal and said door opened signal across the said selected one of said input circuits of said memory circuit.

5. An automatic vehicle door lock circuit for automatically locking the vehicle doors when the vehicle has reached a predetermined speed comprising in combination with a source of direct current potential, a lock and an unlock solenoid for each door which operate the lock mechanism of that door to the locked and unlocked conditions, respectively, and a manually operable door lock switch for selectively energizing said lock and unlock solenoids from said source of direct current potential, a bistable multivibrator circuit having first and second input circuits and an output circuit responsive to the application of an electrical signal across a selected one of said input circuits for producing an electrical door unlocked signal upon said output circuit and to the application of an electrical signal across the other one of said input circuits for removing said door unlocked signal from said output circuit, means for producing an electrical vehicle speed signal when said vehicle has reached said predetermined speed, means responsive to said door unlocked signal and said vehicle speed signal for producing an electrical lock doors signal of a predetermined duration, means responsive to said lock doors signal for completing an energizing circuit for said lock solenoids in parallel across said source of direct current potential, means responsive to the end of said lock doors signal for producing an electrical doors locked signal, and means for applying said doors locked signal across the said other one of said input circuits of said bistable multivibrator circuit.

6. An automatic vehicle door lock circuit for automatically locking the vehicle doors when the vehicle has reached a predetermined speed comprising in combination with a source of direct current potential, a lock and an unlock solenoid for each door which operate the lock mechanism of that door to the locked and unlocked conditions, respectively, and a manually operable door lock switch for selectively energizing said lock and unlock solenoids from said source of direct current potential, a bistable multivibrator circuit having first and second input circuits and an output circuit responsive to the application of an electrical signal across a selected one of Said input circuits for producing an electrical door unlocked signal upon said output circuit and to the application of an electrical signal across the other one of said input circuits for removing said door unlocked signal from said output circuit, means for producing an electrical set signal, means for applying said set signal across the said selected one of said input circuits of said bistable multivibrator circuit, means for producing an electrical vehicle speed signal when said vehicle has reached said predetermined speed, means responsive to said door unlocked signal and said vehicle speed signal for producing an electrical lock doors signal of a predetermined duration, means responsive to said lock doors signal for completing an energizing circuit for said lock solenoids in parallel across said source of direct current potential, means responsive to the end of said lock doors signal for producing an electrical doors locked signal, and means for applying said doors locked signal across the said other one of said input circuits of said bistable multivibrator circuit.

7. An automatic vehicle door lock circuit for automatically locking the vehicle doors when the vehicle has reached a predetermined speed comprising in combination with a source of direct current potential, a lock and an unlock solenoid for each door which operate the lock mechanism of that door to the locked and unlocked conditions, respectively, and a manually operable door lock switch for selectively energizing said lock and unlock solenoids from said source of direct current potential, a bistable multivibrator circuit having first and second input circuits and an output circuit responsive to the application of an electrical signal across a selected one of said input circuits for producing an electrical door unlocked signal upon said output circuit and to the application of an electrical signal across the other one of said input circuits for removing said door unlocked signal from said output circuit, means for producing an electrical set signal, means for applying said set signal across the said selected one of said input circuits of said bistable multivibrator circuit, means for producing an electrical vehicle speed signal when said vehicle has reached said predetermined speed, means responsive to said door unlocked signal and said vehicle speed signal for producing an electrical lock doors signal of a predetermined duration, means responsive to said lock doors signal for completing an energizing circuit for said lock solenoids in parallel across said source of direct current potential, means responsive to the end of said lock doors signal for producing an electrical doors locked signal, means for applying said doors locked signal across the said other one of said input circuits of said bistable multivibrator circuit, means responsive to the energization of said unlock solenoids through one of said manually operable door lock switches for producing an electrical unlock solenoid energized signal, means responsive to the closing of any one of said vehicle doors for producing an electrical door opened signal, and means for applying said unlock solenoid energized signal and said door opened signal across the said selected one of said input circuits of said bistable multivibrator circuit.

8. An automatic vehicle door lock circuit for automatically locking the vehicle doors when the vehicle has reached a predetermined speed comprising in combination with a source of direct current potential, a lock and an unlock solenoid for each door which operate the lock mechanism of that door to the locked and unlocked conditions, respectively, and a manually operable door lock switch for selectively energizing said lock and unlock solenoids from said source of direct current potential, a memory circuit having first and second input circuits and an output circuit responsive to the application of an electrical signal across a selected one of said input circuits for producing an electrical door unlocked signal upon said outpUt circuit and to the application of an electrical signal across the other one of said input circuits for removing said door unlocked signal from said output circuit, means for producing an electrical vehicle speed signal when said vehicle has reached said predetermined speed, means responsive to said door unlocked signal and said vehicle speed signal for producing an electrical lock doors signal of a predetermined duration, means responsive to said lock doors signal for completing an energizing circuit for said lock solenoids in parallel across said source of direct current potential, means responsive to the end of said lock doors signal for producing an electrical doors locked signal, means for applying said doors locked signal across the said other one of said input circuits of said memory circuit, and means for inhibiting said lock door signal while the transmission of said vehicle is in the neutral position.

9. An automatic vehicle door lock circuit for automatically locking the vehicle doors when the vehicle has reached a predetermined speed comprising in combination with a source of direct current potential, a lock and an unlock solenoid for each door which operate the lock mechanism of that door to the locked and unlocked conditions, respectively, and a manually operable door lock switch for selectively energizing said lock and unlock solenoids from said source of direct current potential, a memory circuit having first and second input circuits and an output circuit responsive to the application of an electrical signal across a selected one of said input circuits for producing an electrical door unlocked signal upon said output circuit and to the application of an electrical signal across the other one of said input circuits for removing said door unlocked signal from said output circuit, means for producing an electrical set signal, means for applying said set signal across the said selected one of said input circuits of said memory circuit, means for producing an electrical vehicle speed signal when said vehicle has reached said predetermined speed, means responsive to said door unlocked signal and said vehicle speed signal for producing an electrical lock doors signal of a predetermined duration, means responsive to said lock doors signal for completing an energizing circuit for said lock solenoids in parallel across said source of direct current potential, means responsive to the end of said lock doors signal for producing an electrical doors locked signal, means for applying said doors locked signal across the said other one of said input circuits of said memory circuit, and means for inhibiting said lock doors signal while the transmisson of said vehicle is in the neutral position.

10. An automatic vehicle door lock circuit for automatically locking the vehicle doors when the vehicle has reached a predetermined speed comprising in combination with a source of direct current potential, a lock and an unlock solenoid for each door which operate the lock mechanism of that door to the locked and unlocked conditions, respectively, and a manually operable door lock switch for selectively energizing said lock and unlock solenoids from said source of direct current potential, a memory circuit having first and second input circuits and an output circuit responsive to the application of an electrical signal across a selected one of said input circuits for producing an electrical door unlocked signal upon said output circuit and to the application of an electrical signal across the other one of said input circuits for removing said door unlocked signal from said output circuit, means for producing an electrical set signal, means for applying said set signal across the said selected one of said input circuits of said memory circuit, means for producing an electrical vehicle speed signal when said vehicle has reached said predetermined speed, means responsive to said door unlocked signal and said vehicle speed signal for producing an electrical lock doors signal of a predeterMined duration, means responsive to said lock doors signal for completing an energizing circuit for said lock solenoids in parallel across said source of direct current potential, means responsive to the end of said lock doors signal for producing an electrical doors locked signal, means for applying said doors locked signal across the said other one of said input circuits of said memory circuit, means responsive to the energization of said unlock solenoids through one of said manually operable door lock switches for producing an electrical unlock solenoid energized signal, means responsive to the closing of any one of said vehicle doors for producing an electrical door opened signal, means for applying said unlock solenoid energized signal and said door opened signal across said selected one of said input circuits of said memory circuit, and means for inhibiting said lock doors signal while the transmission of said vehicle is in the neutral position.