JP2005282245A - Vehicular door lock controller - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular door lock controller capable of reducing the number of sensors provided to a vehicle, and also, capable of realizing simple wiring or the like. <P>SOLUTION: An ignition detecting part 12 of the door lock controller 10 monitors whether a current from a DC power supply 30 is made to flow in an ignition switch 36 or not. The ignition detecting part 12 outputs a pulse-like detection signal to a lock control part 14 and a timer 28 of an after-idling device 20 by detecting an OFF-state of the ignition switch 36 when the ignition switch 36 is turned off. The lock control part 14 releases the lock of a door by making a door lock mechanism 38 into an unlocked state via a lock mechanism driving part 16 when the detection signal is inputted from the ignition detecting part 12. An after-idling control part 22 of the after-idling device 20 stops the after-idling of an engine by opening a circuit opening/closing part 40 of a bypass circuit part 24 when a time factor end signal is inputted from the timer 28. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle door lock control device that automatically unlocks a door of a vehicle in a locked state.

  If the vehicle forgets to lock the door and starts, the door may open during traveling. For this reason, in recent vehicles, if you forget to lock the door and start, the vehicle speed is detected by the vehicle speed sensor (vehicle speed detection unit), and the vehicle speed is detected. Some are designed to automatically lock the door when a certain speed is exceeded. And such a door lock control apparatus must perform operation which cancels | releases a certain door lock, when a passenger | crew gets out of a vehicle. Therefore, a door lock control device that detects the status of multiple vehicles and automatically releases the door lock when multiple conditions are met, eliminating the need for the passenger to perform the door lock release operation is proposed. Has been.

For example, Patent Document 1 discloses a plurality of ignition switches from on to off, a vehicle speed of 0, a wireless door lock unit lock or unlock signal off, a door lock switch lock or unlock signal off, and the like. There is described a vehicle door lock motor control device that unlocks a vehicle door when a condition is satisfied.
JP 9-112103 A

  As described above, the vehicle door lock motor control device described in Patent Document 1 unlocks the door when the ignition switch is off and a plurality of conditions such as a vehicle speed of 0 are satisfied. ing. For this reason, it is necessary to provide a large number of sensors to detect the state of the vehicle, the control unit also requires a lot of calculations, and the door lock control device becomes expensive. In addition, since a large number of sensors are disposed, it is necessary to provide a large number of wires inside a narrow vehicle, and the wiring becomes complicated, requiring a lot of time and labor to install the door lock control device. Moreover, in the case of a vehicle having an engine after-idling function for engine cooling or the like, if the door is locked during after-idling, the unlock condition is satisfied when the after-idling is completed, and the door lock is automatically set. There is a fault that is canceled.

  That is, the on / off state of the ignition switch is performed by detecting the voltage applied to the primary side of the ignition coil. When the vehicle is after-idling, a voltage is applied to the primary side of the ignition coil and a current flows even if the ignition key is taken from the cylinder (key cylinder) of the switch. Therefore, in the case of the door lock control device as described in Patent Document 1, if the door is locked in a state where after-idling is performed, after-idling ends and no current flows through the ignition coil as described above. The door unlocking condition is satisfied and the door is unlocked, which is exposed to theft and other dangers. For this reason, in the case of a vehicle having an after-idling function, when the after-idling function is operated, the door cannot be locked to leave the vehicle.

  The present invention has been made to solve the above-described drawbacks of the prior art, and aims to reduce the number of sensors provided in a vehicle and simplify wiring and the like.

  Another object of the present invention is to prevent the door from being unlocked when the after-idling is completed when the door is locked during the after-idling of the engine.

  Usually, when the ignition switch in which the ignition key is pulled out from the key cylinder is turned off, the occupant normally gets out of the vehicle. The present invention has been made based on such considerations, and a vehicle door lock control device according to the present invention operates a lock mechanism that operates a door lock mechanism to lock or unlock a vehicle door. An ignition detection unit for detecting on / off of an ignition switch, and a detection signal output from the ignition detection unit is input, and when the ignition switch is turned off, the door lock is set via the lock mechanism driving unit. And a lock control unit for bringing the mechanism into an unlocked state.

  A vehicle door lock control device according to the present invention is a door lock control device provided in a vehicle having an after-idling function of rotating an engine for a predetermined time when an ignition switch is turned off. A lock mechanism drive unit that activates a mechanism to lock or unlock the door of the vehicle, an ignition detection unit that detects whether or not current is flowing through the ignition switch, and a detection output from the ignition detection unit A lock control unit configured to unlock the door lock mechanism via the lock mechanism driving unit when a signal is input and it is detected that no current flows through the ignition switch. .

  Since the present invention as described above only needs to detect the on / off of the ignition switch, the number of sensors for detecting the state of the vehicle can be greatly reduced, and an inexpensive door lock control device. It can be. For this reason, since there are few sensors, wiring can be simplified and installation of a door lock control apparatus becomes easy. And since there are few sensors, the burden of a control part can be reduced and the software for door lock control can be simplified.

  Further, according to the present invention, when the lock control unit detects that no current flows through the ignition switch, the door lock mechanism is unlocked via the lock mechanism driving unit, and after-idling is performed. When finished, the door lock will not be released. That is, in the after-idling of the vehicle, when the ignition switch is turned off, the primary side of the ignition coil is connected to the vehicle battery without passing through the ignition switch. In the present invention, the door lock is released by detecting that the ignition switch is turned off and no current flows through the ignition switch, so that the door lock release signal is output even after the after idling is completed. There is no risk of the door lock being released.

  A preferred embodiment of a vehicle door lock device according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a block diagram of a main part of a vehicle including a vehicle door lock control device according to an embodiment of the present invention.

  In FIG. 1, a door lock control device 10 and an after-idling device 20 are mounted on a vehicle (not shown). In addition, the vehicle is provided with a DC power supply 30 that is an in-vehicle battery, an ignition coil 32 for driving the engine, and a vehicle speed detection unit (vehicle speed sensor) 34 that detects the speed of the vehicle. The ignition coil 32 is electrically connected to and disconnected from the DC power source 30 via the ignition switch 36. In other words, the ignition coil 32 is connected to the DC power source 30 when the ignition key is inserted into the key cylinder of the ignition switch 36, and is disconnected from the DC power source 30 when the ignition key is pulled out.

  The door lock control device 10 includes an ignition detection unit 12, a lock control unit 14, and a lock mechanism drive unit 16. The ignition detection unit 12 is connected to the ignition switch 36 and detects whether the ignition switch 36 is on or off. In other words, the ignition detection unit 12 detects whether or not the ignition key of the ignition switch 36 is inserted into the key cylinder and the ignition switch 36 is in an ON state. And the ignition detection part 12 outputs a detection signal to the lock control part 14 provided in the output side, when an electric current no longer flows into the ignition switch 36. FIG.

  As will be described later, the lock control unit 14 receives the detection signal from the ignition detection unit 12 and controls the lock mechanism driving unit 16 to operate the door lock mechanism 38 to unlock the locked vehicle door. To do. In addition, a vehicle speed detection signal is input from the vehicle speed detection unit 34 to the lock control unit 14. The lock control unit 14 outputs a control signal to the lock mechanism driving unit 16 when the vehicle speed detected by the vehicle speed detection unit 34 is equal to or higher than a preset vehicle speed, for example, 10 km / h. Thereby, the lock mechanism drive unit 16 automatically drives the power device such as a motor of the door lock mechanism 38 to automatically lock the door.

  The after-idling device 20 includes an after-idling control unit 22, a bypass circuit unit 24 that bypasses the ignition switch 36, a voltage detection unit 26, and a timer 28. The bypass circuit unit 24 includes a circuit opening / closing unit 40 that is on / off controlled by the after-idling control unit 22 and a resistance component 42. The circuit opening / closing unit 40 is normally open and is opened / closed by the after-idling control unit 22. Further, the resistance component 42 has a resistance value such that when the ignition switch 36 is on, the current from the DC power supply 30 flows through the ignition switch 36 and the current hardly flows through the bypass circuit unit 24.

  The timer 28 starts counting the time when a detection signal indicating that the ignition switch 36 is turned off is input from the ignition detection unit 12, and inputs the time counting end signal to the after-idling control unit 22 when the counting of the predetermined time is completed. To do. The after-idling control unit 22 receives a selection signal from an after-idling selection unit 50 such as a dip switch provided in the vehicle interior, and when after-idling is selected, the circuit opening / closing unit 40 of the bypass circuit unit 24 will be described later. Close the engine and perform engine after-idling.

  The operation of the embodiment as described above is as follows. The after-idling device 20 inputs an after-idling execution signal to the after-idling control unit 22 when the driver selects “with after-idling” via the after-idling selection unit 50. As will be described in detail later, the after-idling control unit 22 closes the normally open circuit opening / closing unit 40 of the bypass circuit unit 24 as indicated by a broken line, and performs after-idling of the engine for a predetermined time (for example, one minute). In the after-idling device 20, when the driver selects no after-idling via the after-idling selection unit 50, the after-idling control unit 22 keeps the circuit opening / closing unit 40 open, and does not perform after-idling of the engine.

  When the driver inserts the ignition key of the ignition switch 36 into the key cylinder, the ignition switch 36 is turned on and the current from the DC power supply 30 is supplied to the primary side of the ignition coil 32. When the driver turns the ignition key to start the engine and starts the vehicle, the vehicle speed detection unit 34 detects the speed of the vehicle and inputs it to the lock control unit 14 of the door lock control device 10. The lock control unit 14 compares the vehicle speed detected by the vehicle speed detection unit 34 with a preset vehicle speed, and when the detected vehicle speed becomes equal to or higher than the set vehicle speed, a power device such as a door lock motor (not shown) of the lock mechanism drive unit 16 is installed. Driven, the door lock mechanism 38 is locked to lock the door of the vehicle. As a result, even if an occupant such as a driver forgets to lock the door and starts the vehicle, the door is automatically locked when the vehicle speed exceeds the set speed. Therefore, it is possible to avoid danger such as opening the door while the vehicle is running.

The ignition detection unit 12 of the door lock control unit 10 monitors whether or not a current is flowing through the ignition switch 36. When the driver stops the vehicle and pulls out the ignition key from the key cylinder, the ignition switch 36 is turned off and no current flows through the ignition switch 36. When the ignition switch 36 changes from the on state where the current flows to the off state where the current stops flowing, the ignition detection unit 12 detects this and inputs a pulse-shaped detection signal to the lock control unit 14. When a switch-off signal is input from the ignition detection unit 12, the lock control unit 14 drives the power device of the lock mechanism driving unit 16 in the unlocking direction, and puts the door lock mechanism 38 into the unlocked state. That is, when the driver removes the ignition key from the key cylinder, the vehicle door is automatically unlocked and unlocked. Therefore, the vehicle occupant does not need to perform an operation to unlock the door when getting off the vehicle.
If the driver has not selected after-idling, the engine stops when the ignition key is set to the engine-off position.

  When the driver selects the presence of after-idling in the after-idling selection unit 50, an after-idling execution signal is input to the after-idling control unit 22. When the driver inserts the ignition key into the key cylinder, the ignition switch 36 is turned on and current is supplied from the DC power supply 30 to the primary side of the ignition coil 32. The voltage detector 26 of the after-idling device 20 detects whether a voltage is applied to the primary side of the ignition coil 32. When the ignition switch 36 is turned on and a voltage is applied to the primary side of the ignition coil 32, the voltage detection unit 26 sends a voltage detection signal to the after-idling control unit 22. When the after idling execution signal is input from the after idling execution signal from the after idling selection unit 50, the after idling control unit 22 indicates the circuit opening / closing unit 40 of the bypass circuit unit 24 with a broken line. Close like. However, since the bypass circuit unit 24 has the resistance component 42, when the ignition switch 36 is on, almost no current flows through the bypass circuit unit 24, and the primary of the ignition coil 32 through the ignition switch 36. Power is supplied from the DC power supply 30 to the side.

  As described above, when the vehicle starts and exceeds a predetermined speed, the door is automatically locked. Then, when the driver stops the vehicle, pulls out the ignition key from the key cylinder, the ignition switch 36 is turned off and no current flows through the ignition switch 36, the ignition detection unit 12 detects this, and the lock control unit 14 A detection signal is input to the timer 28 of the after-idling device 20. On the other hand, since the circuit opening / closing unit 40 is closed, the bypass circuit unit 24 of the after-idling device 20 is supplied with the current output from the DC power source 30 to the ignition coil 32 when the ignition switch 36 is turned off. Therefore, even when the ignition switch 36 is turned off, the current is supplied to the ignition coil 32, so that the engine is idling.

  When the lock control unit 14 of the door lock control device 10 receives the ignition switch-off detection signal from the ignition detection unit 12, the lock control unit 14 unlocks the door lock mechanism 38 via the lock mechanism drive unit 16 as described above. Unlock the door. The timer 28 of the after-idling device 20 starts counting time when an ignition switch-off signal is input from the ignition detection unit 12. Then, the timer 28 inputs a time counting end signal to the after-idling control unit 22 when the set predetermined time has been counted. After receiving the time counting end signal from the timer 28, the after-idling control unit 22 opens the circuit opening / closing unit 40 of the bypass circuit unit 24 as indicated by a solid line. As a result, the supply of current to the ignition coil 32 is cut off, and the engine after idling ends.

  As described above, in the embodiment, it is detected that the current does not flow to the ignition switch 36, and the door is unlocked to be in the unlocked state. For this reason, unlike in the past, after detecting that the voltage is no longer applied to the ignition coil 32 and unlocking the door, after idling ends even if the door is locked during engine after idling. The door will not be unlocked. Therefore, even if the driver of the vehicle is set to perform after-idling of the engine, it is not necessary to wait for after-idling to end when the vehicle gets off and the door is locked.

It is a block diagram of the principal part of the vehicle which has the door lock control apparatus which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ......... Door lock control device, 12 ......... Ignition detection unit, 14 ......... Lock control unit, 16 ...... Lock mechanism drive unit, 20 ......... After idling device, 22 ......... After idling control unit 24 ......... Bypass circuit section 26 ......... Voltage detection section 28 ......... Timer 32 ......... Ignition coil 34 ......... Vehicle speed detection section 36 ......... Ignition switch 38 ......... Door Lock mechanism, 50 .... After idling selection section.

Claims (2)

A lock mechanism drive that activates the door lock mechanism to lock or unlock the door of the vehicle; and
An ignition detector for detecting on / off of the ignition switch;
When the detection signal output from the ignition detection unit is input and the ignition switch is turned off, a lock control unit that unlocks the door lock mechanism via the lock mechanism driving unit;
A vehicle door lock control device characterized by comprising: A door lock control device provided in a vehicle having an after-idling function of rotating an engine for a predetermined time when an ignition switch is turned off,
A lock mechanism drive that activates the door lock mechanism to lock or unlock the door of the vehicle; and
An ignition detection unit for detecting whether or not a current flows through the ignition switch;
When the detection signal output from the ignition detection unit is input and when it is detected that no current flows through the ignition switch, the lock control unit is configured to unlock the door lock mechanism via the lock mechanism drive unit. When,
A vehicle door lock control device characterized by comprising:

Images