JPH05171850A - Device for preventing failure in locking car door - Google Patents

Abstract

PURPOSE:To prevent certainly a failure in locking a door without deteriorating operability of door-locking. CONSTITUTION:In the case where a key 1 moves to a position distant from any of receptible ranges A1 of (A) code signal reception circuits 4 and a door D is closed with its lock 22 unlocked, a locking failure judgement circuit 12 judges that the door is not locked and emits a signal for turning a timer on to the timer 12a. As a specified period of time passes with clocking made by the timer 12a, the door lock is put in the state of locking. Therefore, a failure in locking the door lock can be prevented certainly.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing forgetting to lock a vehicle door lock when a driver leaves the vehicle.

[0002]

2. Description of the Related Art Generally, when a driver leaves a vehicle, a key cylinder provided at a door is locked by an engine operating key to prevent theft.
Alternatively, lock the lock knob inside the vehicle with the door open, and in this state, close the door while unlocking the outside handle on the outside of the vehicle by a keyless lock operation. It is preferable to lock the door.

[0003]

However, the driver, that is, the key holder, does not always forget to lock the door lock or always leave the vehicle by locking the door lock. For example, there is a possibility that the user may leave the vehicle for a short time, park the vehicle for a long time while keeping the door lock unlocked, and eventually forget to lock the door lock.

In order to solve this problem, for example, when the key holder closes the door from the outside of the vehicle, the door lock is always operated so that the person forgets to lock the door when he gets out of the vehicle. Can be prevented. However, in this case, even if you leave the vehicle for a short time,
The door lock is locked each time, and on the contrary, there is a problem that the operability is extremely deteriorated.

In view of the above-mentioned conventional problems, the present invention provides a locking forget prevention device for a vehicle door lock which can surely prevent locking forgetting without deteriorating the operability of the door lock. The purpose is to do.

[0006]

In order to achieve the above object, the apparatus of the present invention is provided with a code signal generating circuit for generating a predetermined code signal on the engine operating key side, and the code signal generating circuit on the vehicle body side. From the time when the code signal receiving circuit that can receive the signal within the receivable range, the lock forgetting determination circuit that determines that the key is outside the receivable range and the door is closed, and the lock forgetting determination circuit It is characterized by including a timer that outputs an ON signal after a predetermined period of time has elapsed and locks the door lock.

[0007]

If the key moves out of the receivable range of the code signal receiving circuit and the door is closed and the door lock is unlocked at that time, the forget-to-lock discriminating circuit discriminates this and the timer is activated. An ON signal is output, and when a predetermined time has elapsed after the timer clocked, the door lock is locked. Therefore, it is possible to reliably prevent the vehicle from being parked while the door lock is unlocked and forgetting to lock the vehicle.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. The key (1) for operating the engine of the vehicle is
An A code signal generating circuit (2) for constantly transmitting a predetermined A code signal and a B code signal generating circuit for transmitting a predetermined B code signal by operating a button (3a)
There is provided a transmitting device including (3).

(4) is a receivable range (A1) within a range defined inside and outside the vehicle as shown in FIG. 2 for the A code signal provided on the left and right door mirrors of the vehicle and transmitted from the transmitting device. By receiving the A code signal with the pair of right and left directivity A code signal receiving circuits that can be received at (A1), the received code signal is shaped into waveforms, compared by the code comparison circuit, and registered in advance. If it is the same as the registration code,
In-vehicle discrimination circuit (5) and isolation discrimination circuit according to predetermined conditions
(6) Outputs an ON signal to the vehicle exterior discrimination circuit (7).

The in-vehicle discrimination circuit (5) discriminates that the key (1) is inside the vehicle, that is, the key (1) overlaps the receivable range (A1) of the left and right A code signal receiving circuits (4). When the ON signal is output from the left and right A code signal receiving circuits (4) when the vehicle is in the vehicle in the overlapping range (A2), the ON signal is output to the key forgetting determination circuit (11).

The isolation discriminating circuit (6) discriminates that the driver has left the vehicle, that is, the key (1) indicates the left and right A
When the left and right A code signal receiving circuits (4) cannot receive the A code signal outside the receivable range (A1) of the code signal receiving circuit (4), an ON signal is sent to the lock forgetting determination circuit (12). Output. When the ON signal is input to the lock forgetting discrimination circuit (12), the timer (12a) measures the time from that point, and outputs an ON signal to the lock discrimination circuit (18) when a predetermined time has elapsed.

When the outside-vehicle discrimination circuit (7) determines that the key (1) is in the vicinity of the vehicle, that is, the key (1) is located at the left and right A.
Receivable range of only one of the code discrimination circuit (4) (A
In 1), when only one of the A code signal receiving circuits (4) receives the A code signal and determines that the driver is in the vicinity of the vehicle, an ON signal is sent to the logic circuit (13). Output.

(8) is a B code signal receiving circuit which is provided at an appropriate place of the vehicle and which receives the B code signal transmitted from the transmitting device. By receiving the B code signal, the waveform of the received code signal is obtained. Shape the waveform with the molding circuit (9),
The code collating circuit (10) collates with a registered code registered in advance, and if they are the same, outputs an ON signal to the logic circuit (13).
The logic circuit (13) is a vehicle outside discrimination circuit (7) and a code matching circuit.
When the ON signal is output from each of (10), the ON signal is output to the lock / unlock output circuit (15).

The lock / unlock output circuit (15) is provided with a door lock (2
If the lock / unlock memory circuit (16) that controls the lock / unlock state of 2) is in the locked state, the ON signal is output from the logic circuit (13), and the ON signal is output to the unlock determination circuit (17). Lock / unlock memory circuit (16) to unlock state, and lock / unlock memory circuit
When (16) is in the unlocked state, the ON signal is output from the logic circuit (13) to output the ON signal to the lock determination circuit (18) to put the lock / unlock storage circuit (16) into the locked state. Then, the lock and unlock operations can be performed in sequence. .

(14) is a door switch which is turned on when the open / closed state of the driver's seat door (D) of the vehicle is detected and the opening of the door (D) is detected. An on signal is output to 11), and an off signal is output to the lock forgetting determination circuit (12) by turning it off. (24) is an in-vehicle lock / unlock operation switch provided in a proper place in the vehicle, and outputs an ON signal to the lock / unlock output circuit (15) by being turned on.

The lock / unlock storage circuit (16) is an unlock determination circuit (17).
When the ON signal is output from the device, the unlocked state that outputs the ON signal to the logic circuit (19) is stored, and when the ON signal is output from the lock determination circuit (18), the unlocked state is reset. Then, the locked state in which the ON signal is not output is stored in the logic circuit (19). (20) is a door open operation switch provided inside and outside the door (D), and when turned on, outputs an ON signal to the logic circuit (19), and the locking / unlocking memory circuit (19) unlocks it. When set to the state and outputting the ON signal, the ON signal is output from the logic circuit (19) to the drive circuit (21).

The door lock (22) is attached to the door (D),
Inside the body (22a), the striker fixed to the vehicle body is engaged with the latch (22b) that can be engaged and disengaged, the locking plate (22c) that can be engaged and disengaged with the latch (22b), and the locking plate (22d). When the lock release actuator (23) composed of a motor and a speed reduction mechanism connected to 22c) is housed and the lock / unlock memory circuit (16) is in the unlocked state, the door open operation switch (20) is operated. By being
An ON signal is output from the drive circuit (21) to drive the unlocking actuator (23), and the locking plate (22
c) in the release direction to release it from the latch (22b),
The door (D) can be opened.

Next, the operation of the embodiment of the present invention will be described. When the key (1) is inside the vehicle, the key (1) is within the overlapping range (A2) where the receivable range (A1) of each A code signal receiving circuit (4) overlaps. 5) is the key
It is determined that (1) is inside the vehicle, and the key forgetting determination circuit (1
Output ON signal to 1). At this time, the door switch (14)
It is detected that the door (D) is open and the lock / unlock operation switch (14) in the vehicle is operated to lock / unlock the memory circuit (16).
Even if the key is locked, the lock / unlock memory circuit (16) outputs a lock signal, and the key forget determination circuit (11) determines that, and the lock / unlock memory circuit (16) is unlocked. Reset to. Therefore, no matter where the key (1) is left inside the vehicle, the door (D) is accidentally locked from the outside and the key (1)
Will not be trapped inside the car.

When the driver, that is, the key (1) is within the receivable range (A2) of any one of the A code signal receiving circuits (4) and is in the vicinity of the vehicle, the vehicle outside discrimination circuit (7) is logical. circuit
Output ON signal to (13). At this place, the key
When the button (3a) of (1) is turned on, the B code signal receiving circuit (8) receives the B code signal and the logic circuit is passed through the waveform shaping circuit (9) and the code matching circuit (10). (1
Output ON signal to 3). At this time, the locking / unlocking memory circuit (1
If 6) is in the unlocked state, the lock / unlock output circuit (15) outputs an ON signal to the lock determination circuit (18), and if in the locked state, the unlock determination circuit (17) An ON signal can be output to the lock / unlock memory circuit (16) to perform the lock / unlock operation.

The driver, that is, the key (1) is moved to a position away from any receivable range (A1) of each A-code signal receiving circuit (4), and the isolation determination circuit (6) moves to the key ( When it is determined that 1) has separated from the vehicle, at that time, the door (D) is closed and the door lock (22) is in the unlocked state, that is, the door lock (22) is in the unlocked state. If 16) is in the unlocked state, the forget-to-lock discrimination circuit (12) outputs an ON signal to the timer (12a), and the timer (12a) turns on to the lock discrimination circuit (18) when a predetermined time has elapsed. A signal is output and the locking / unlocking memory circuit (16) is locked. Therefore, it is possible to surely prevent the vehicle from being parked without forgetting to lock the vehicle while the door lock (22) is unlocked.

[0021]

The present invention has the following effects. If the driver, that is, the key, leaves the vehicle in the unlocked state for a predetermined time and moves out of the receivable range of the code signal receiving circuit, the door lock is forcibly locked after the predetermined time elapses. It is possible to reliably prevent forgetting to lock the vehicle when it is parked in the locked state.

When the driver is outside the vehicle near the vehicle, the door lock is not forcibly locked, so that the door lock operation is not hindered.

[Brief description of drawings]

FIG. 1 is a control circuit diagram of an embodiment of the present invention.

FIG. 2 is a schematic plan view of a vehicle to which the present invention has been applied.

FIG. 3 is a perspective view of a door to which the present invention is applied.

FIG. 4 is a perspective view of a door lock.

[Explanation of symbols]

 (1) Key (2) A code signal generation circuit (3) B code signal generation circuit (4) A code signal reception circuit (5) Vehicle interior discrimination circuit (6) Isolation discrimination circuit (7) Vehicle exterior discrimination circuit (8) B Code signal receiving circuit (11) Key forgetting judgment circuit (12) Lock forgetting judgment circuit (13) Logic circuit (12a) Timer (14) Door switch (15) Lock and unlock output circuit (16) Lock and unlock memory circuit ( 17) Unlocking discrimination circuit (18) Locking discrimination circuit (19) Logic circuit (21) Drive circuit (22) Door lock (23) Unlock actuator (24) In-vehicle lock / unlock operation switch (A1) Receivable range ( A2) Polymerization position

Claims (1)

[Claims] 1. A code signal generating circuit for generating a predetermined code signal is provided on the engine operating key side, and a code signal receiving circuit capable of receiving the code signal within a receivable range is provided on the vehicle body side. The lock forgetting determination circuit that determines that the door is closed and that it is outside the receivable range, and the ON signal is output after a predetermined time has elapsed from the time when the lock forgetting determination circuit determines that the door is locked. A device for preventing forgetting to lock a vehicle door lock, comprising a timer for locking the vehicle door lock.