JPH0960373A - Control device for dead lock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To place a dead lock mechanism in an unlocked state definitely by providing a specified time which is necessary to stabilize battery voltage before the dead lock mechanism is operated in the release direction. SOLUTION: A signal processing circuit 5' gives a command to feed an unlock signal to a motor 9 from a dead lock/unlock drive circuit 8, having received a signal showing a battery voltage value from a third low pass filter 2c. In spite of this command, when such a trouble as cranking attributable to starting of an engine is generated and results in a drop in the battery voltage, a Zener diode for voltage detection 30 forces an ignition switch 1c to be turned OFF although the ignition switch 1c is in an ON state so that the signal may enter the third low pass filter 2c while the signal which shows that state may be transmitted to the signal processing circuit 5'. From this, the signal processing circuit determines that a dead lock mechanism has failed to unlock properly and unlocks the dead lock mechanism after the voltage returns to the normal voltage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deadlock control device which double locks by providing a deadlock mechanism in addition to an ordinary door lock / unlock mechanism to protect a vehicle from theft. is there.

[0002]

2. Description of the Related Art A control circuit of a conventional deadlock control device according to this invention will be described with reference to FIG. That is, in the figure, reference numeral 1a is a first state switch which is turned on by a lock operation by a door key, and chattering noise is removed from a signal generated by the first state switch by a first low pass filter 2a, and the signal is supplied to a signal processing circuit 5 described later. . 1b is a second state switch which is turned on by an unlocking operation by the door key, and the signal generated by the second state switch is the second
Chattering noise is removed by the low-pass filter 2b and supplied to the signal processing circuit 5 described later. Reference numeral 1c is an ignition switch which is turned on by operating a key switch for starting the engine of the vehicle, and the chattering noise of the signal generated by the ignition switch is removed by the third low-pass filter 2c, and the signal is supplied to a signal processing circuit 5 described later.

When the signal processing circuit 5 receives a signal from the first low-pass filter 2a, it supplies a lock current to the motor 7 through the door lock / unlock drive circuit 6 to lock the door, and then dead. A lock current is supplied to the motor 9 via the lock / unlock drive circuit 8 to activate (or lock) the deadlock mechanism.

When the signal processing circuit 5 receives a signal from the second low pass filter 2b, the signal processing circuit 5 causes deadlock.
An unlock current (current in the opposite direction to the lock current for the motor 9) is supplied to the motor 9 via the unlock drive circuit 8 to release (or unlock) the deadlock mechanism, and then the door lock / unlock operation is performed. An unlock current (current in the opposite direction to the lock current for the motor 7) is supplied to the motor 7 via the lock drive circuit 6 to unlock the door.

When the signal processing circuit 5 receives a signal from the third low pass filter 2c, the signal processing circuit 5 supplies an unlock current to the motor 9 through the deadlock / unlock drive circuit 8 to activate the deadlock mechanism. Release it.

Next, the connection between the mechanical mechanism and the control circuit described in FIG. 3 will be described with reference to FIG. In FIG. 2, reference numeral 10 includes the first, second, and third low-pass filters 2a, 2b, and 2c shown in FIG. 3, a signal processing circuit 5, a door lock / unlock drive circuit 6, and a deadlock / unlock drive circuit 8. Is a control circuit.

First, when the deadlock mechanism is not operating, that is, in FIG. 2, the door member 21a is not operating, or the second rod 14 and the fifth rod 24 are connected to each other, the door is closed. When the vehicle interior door lock knob 11 provided is pulled, the first turning member 13 is turned via the first rod 12, the second rod 14 is pulled upward, and the second turning member 15 is turned. The lock / unlock mechanism 16 is activated. As a result, the door is unlocked.

When the vehicle interior door lock knob 11 is pushed, the first turning member 13 is turned in the opposite direction via the first rod 12, the second rod 14 is pushed downward, and the second turning member is pushed. 15 is rotated, and the lock / unlock mechanism 16 is operated. As a result, the door is locked. At this time, the third rod 17,
Third rotating member 18, fourth rod 19, and fourth rotating member 2
0 is rotated.

Next, when the key is rotated to the lock position by operating the key from the outside of the door of the vehicle, the third rotating member 18 rotates right to push down the third rod 17, and the second rotating member is pushed. The lock / unlock mechanism 16 is operated by rotating 15 to the left to lock the door. At this time, the fourth rod 19 is pushed down and the fourth rotating member 2
0 is rotated to the right to turn on the first state switch 1a, and a lock current is supplied from the control circuit 10 to the motor 7 constituting the lock / unlock actuator 22 to lock the door.

After that, a lock current is also supplied to the motor 9 which constitutes the deadlock / unlock actuator 21, the cutting member 21a acts, the second rod 14 and the fifth rod 24 are separated, and the vehicle interior door lock knob Even if 11 is pulled, the lock / unlock mechanism 16 becomes inoperable, and the lock is doubled.

When the key is rotated from the outside of the door to the unlock position by operating the key in the opposite direction, the third rotating member 3 rotates counterclockwise to push up the third rod 17, and
The rotating member 15 is rotated rightward to operate the lock / unlock mechanism 16 to unlock the door.

At this time, the fourth rod 19 is pushed upward and the fourth rotating member 20 is rotated leftward to turn on the second state switch 1b, and then the deadlock / unlock actuator 21. Motor 9
An unlocking current is supplied from the control circuit 10, that is, the cutting member 21a is in a non-operating state, the second rod 14 and the fifth rod 24 are connected, and then the motor constituting the lock / unlock actuator 22. An unlock current is also supplied from 7 to the control circuit 10 to unlock the door.

When the ignition switch 1c is turned on by operating the key switch of the vehicle, the control circuit 10 causes the deadlock / unlock actuator 21 to operate.
When the unlocking current is supplied to the motor 9 constituting the above, that is, the removing member 21a is in a non-operating state and the second rod 14 and the fifth rod 24 are connected to each other and the vehicle interior door lock knob 11 is pulled, the unlocking is performed. Lock mechanism 16
Are connected.

[0014]

As described above, in the conventional deadlock control device, when the deadlock mechanism is once actuated, the driver or the like tries to get out of the vehicle and operates the door lock knob. Since the mechanical mechanism is mechanically separated, the deadlock mechanism must be deactivated either by regular key operation or by key switch operation to start the engine. When the engine is started by operating the switch, the battery voltage will drop when the engine starts, and if the deadlock / unlock actuator or deadlock / unlock drive circuit does not operate normally, the driver However, there is a risk that they will not be able to get out of the vehicle except by unlocking the door lock by using the proper key operation.

Therefore, the present invention has been made in view of the above-mentioned problems, and the engine is started even if the deadlock mechanism operates due to some reason, for example, an erroneous operation after the occupant gets into the vehicle. Thus, it is an object of the present invention to provide a device in which the deadlock mechanism is reliably unlocked and the driver or the like is not trapped inside the vehicle.

[0016]

In a deadlock control device according to the present invention, a door lock / unlock mechanism and a vehicle interior door lock knob are coupled by idle swing means, and a deadlock mechanism has a motor for driving the idle swing mechanism. And a deadlock control device for controlling the deadlock mechanism in the releasing direction when the ignition switch is turned on, in a deadlock control device from when the ignition switch is turned on until the deadlock mechanism operates in the releasing direction. The predetermined time required for the voltage to stabilize is provided.

[0017]

According to the present invention, the battery voltage can be stabilized even if the battery is lowered due to the start of the engine between the time when the ignition switch is turned on and the deadlock mechanism is operated in the releasing direction. Since the deadlock / unlock actuator is normally driven after the battery voltage is stabilized by providing the required predetermined time, the operation is ensured.

[0018]

EXAMPLES Examples according to the present invention will be described below.
In FIG. 1, the same or equivalent elements as those of the conventional configuration shown and described in FIG. 3 are designated by the same reference numerals and omitted, and only the functions of different portions will be described below.

That is, in FIG. 1, reference numeral 30 denotes a Zener diode for voltage detection, which is an ignition switch 1
The voltage value of the battery BAT supplied by turning on c is monitored. That is, when the battery voltage value exceeds the Zener voltage value of the Zener diode 30,
The signal processing circuit 5'is supplied with a signal notifying that the power supply voltage value has reached a predetermined voltage. The signal processing circuit 5'has the following functions added to the signal processing circuit 5 shown in FIG.

That is, the signal processing circuit 5'receives a signal indicating the battery voltage value from the third low-pass filter 2c, and instructs the deadlock / unlock drive circuit 8 to supply an unlock current to the motor 9. However, when the battery voltage drops due to cranking due to engine start, etc. (i.e., to a voltage at which the deadlock / unlock actuator or deadlock / unlock drive circuit does not operate). When the ignition switch 1c is in the on state by the zener diode 30 for voltage detection, the zener diode 30 is in the off state and is input to the third low-pass filter 2c, and the third low-pass filter 2 is further input.
c sends a signal indicating it to the signal processing circuit 5 '. The signal processing circuit 5'receives this signal and determines that the deadlock mechanism could not be unlocked normally.

After that, when the battery voltage returns to a normal voltage (that is, a voltage at which the deadlock / unlock actuator 21 and the deadlock / unlock drive circuit 8 operate), the signal processing circuit 5'is turned on again. 3 The low-pass filter 2c receives a signal indicating that the battery voltage is normal, and instructs the deadlock / unlock drive circuit 8 to output a negative signal for supplying an unlock current to the motor 9 to perform deadlock. Unlock the mechanism.

Although the deadlock mechanism is switched to the unlocked state after detecting that the battery voltage has reached the predetermined voltage in the above embodiment, it is judged by inputting the engine speed and the L terminal voltage of the alternator. It goes without saying that you can do it.

[0023]

As described above, according to the present invention, the deadlock device can be reliably brought into the unlocked state by starting the engine, so that the driver is not trapped in the vehicle compartment. The effect is demonstrated.

[Brief description of drawings]

FIG. 1 is a circuit block explanatory diagram showing an embodiment of a deadlock control device according to the present invention.

FIG. 2 is an explanatory diagram showing a door opening / closing mechanism operated by the motors 7 and 9 of FIG.

FIG. 3 is a circuit block diagram of a conventional deadlock control device.

[Explanation of symbols]

 5, 5'Signal processing circuit 30 Zener diode 50 Rotation center

Continuation of front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display area E05B 65/19 E05B 65/19 D

Claims (1)

[Claims] 1. A door lock / unlock mechanism and a vehicle interior door lock knob are connected by idle swing means, and a deadlock mechanism having a motor for driving the idle swing mechanism is provided, and the dead switch is provided when an ignition switch is turned on. In the deadlock control device for controlling the lock mechanism in the releasing direction, a predetermined time necessary for stabilizing the battery voltage is provided between the ignition switch being turned on and the deadlock mechanism operating in the releasing direction. A deadlock control device characterized in that