JP3447788B2 - Automatic locking mechanism of request type locking device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic lock mechanism of a request type locking device for automatically locking and unlocking a door by radio.

[0002]

2. Description of the Related Art In automobiles, a radio key system for locking and unlocking a door without using a key is being developed. In the case of this system, after the driver opens the door and goes out of the vehicle, the transmitter is operated to send a signal to the vehicle, or a switch provided near the door handle is operated. The door is unlocked or locked by communicating between the vehicle-mounted device and the transmitter. Therefore, there is an advantage that the driver does not need to take out the key and insert it into the key groove to lock / unlock it.

However, in the above-mentioned prior art, when the driver has a luggage or the like in both hands, when the driver locks or unlocks the luggage, the luggage is unloaded and a switch provided near the transmitter or the door handle is operated. I had to do it.

Therefore, as in the technical idea disclosed in Japanese Laid-Open Patent Publication No. 62-37479, a request signal is intermittently transmitted to a transmitter from the timing when the door is closed, and the code from the transmitter is transmitted. A configuration has been proposed in which the door is locked when the signal cannot be received and the door is unlocked when the code signal is started to be received.
This eliminates the need to operate the transmitter or switch when locking / unlocking.

[0005]

In this prior art, if the lock actuator does not operate due to friction or the like when the door is locked, there is no means for notifying the driver of it. Therefore, although the driver intends to lock the door, there is a possibility that the driver actually unlocks the door.

Further, when the driver continues to stay in the vicinity of the vehicle after getting off the vehicle, for example, when cleaning the vehicle, the transmitter continuously transmits the code signal to the vehicle, which consumes power. There was also the inconvenience that the amount increased and the power supply had to be constantly monitored.

The present invention has been made in order to solve this kind of problem, and provides an automatic locking mechanism for a request-type locking device which can be locked easily and surely and which does not need to monitor the power supply. The purpose is to do.

[0008]

In order to achieve the above object, in the automatic lock mechanism of the request-type locking device of the present invention, a request signal is transmitted from the vehicle-mounted device to the portable communication device carried by the driver, In response to this, the personal identification code signal is returned from the portable communication device to the vehicle-mounted device, and the door is automatically locked or unlocked by matching the personal identification code signal with the vehicle-specific code signal. In the auto-lock mechanism of the locking device, after the key insertion determining means for determining whether a key is inserted in the ignition switch and the key insertion determining means, after determining that the key has been removed from the ignition switch, Of the doors, the exit detection means for detecting that the driver's seat door is closed, and the unlocked state detection means for detecting the unlocking operation of the door, Performs locking of the door by actuating the lock actuator based on the output from the vehicle detection means, the door line locking of the door again if not unlocked from the time the output occurs within a predetermined time of the getting-off detecting means And the door was unlocked within the specified time
In some cases, a lock actuator driving unit that does not lock the door is provided.

Further, it detects that the portable communication device has been left in the vehicle and sends an unlocking signal to the lock actuator driving means so as to unlock the door for a predetermined time, and after the predetermined time elapses, the door is locked. It is preferable to include a communication device misplacement detection means for transmitting a locking signal to be performed to the lock actuator driving means, and a notification means for notifying a driver when the portable communication device is misplaced.

Further, it is more preferable to include request signal transmission prohibiting means for prohibiting the transmission of the request signal transmitted from the vehicle-mounted device to the portable communication device. Further , the auto-lock mechanism of the request-type locking device according to the present invention is
A request signal is transmitted from the in-vehicle device to the portable communication device carried by the driver, and in response to this, a password code signal is returned from the portable communication device to the in-vehicle device, and the identification code signal and a vehicle-specific code signal are transmitted. In the auto-lock mechanism of the request-type locking device in which the door is automatically locked or unlocked by collating, the key insertion determining means for determining whether or not the key is inserted in the ignition switch, and the key insertion After the determination means determines that the key has been removed from the ignition switch, the exit detection means for detecting that the driver's door of the doors is closed, and the unlocking operation for detecting the unlocking operation of the door If the door is unlocked within a predetermined time after the output of the state detection means and the disembarkation detection means is generated, the door remains in the unlocked state, otherwise It is characterized by and a lock actuator driving means to lock the door after the predetermined time.

[0011]

In the automatic lock mechanism of the request type locking device according to the present invention, the door is automatically locked by the lock actuator driving means at the timing when the driver gets off the vehicle, and the door is unlocked within a predetermined time from the getting off timing. If it is not locked, lock it again. Therefore, even if the door is not locked for the first time due to the friction of the lock actuator, it can be locked for the second time with certainty.

If the driver forgets to leave the portable communication device in the vehicle when getting off the vehicle, the driver is alerted by the notifying means and the door is unlocked for a predetermined time so that the driver can open the door. The door is opened and the door is locked again when a predetermined time has passed. Therefore, it is possible to prevent the driver from forgetting to leave the portable communication device, and even if the portable communication device is left behind, the door can be locked without fail.

When the portable communication device is left in the vehicle, the transmission of the request signal from the vehicle-mounted device to the portable communication device is further stopped. As a result, even if a third person touches the door handle or the like, the request signal is not transmitted from the vehicle-mounted device to the portable communication device, so that the door is not unlocked and the theft can be reliably prevented.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An auto-lock mechanism of a request type locking device according to the present invention will be described below in detail with reference to the preferred embodiments with reference to the accompanying drawings.

FIG. 1 is a schematic perspective view showing the relationship between an automatic lock mechanism and a key-integrated type portable transmitter according to this embodiment and a vehicle body. FIG. 2 is a block diagram of the automatic lock mechanism. is there.

A key-integrated type portable transmitter (hereinafter referred to as a key) 10 shown in FIG. 1 is a conventional key integrally provided with a portable transmitter, and has a vehicle body auto-lock mechanism described later. The security code signal is transmitted by a request signal from the personal computer. Further, the key 10 is provided with an unlock switch, and the door can be unlocked by operating the switch.

On the other hand, the auto lock mechanism 12 is provided on the vehicle body side.
Is provided. The auto lock mechanism 12 is a transmission antenna 1 that transmits a request signal to the key 10.
4 is provided on the ceiling of the vehicle body, and receiving antennas 16a and 16b are provided on the right side surface and the left side surface of the vehicle body, respectively.

Inside the vehicle body, a key discrimination sensor 18 is provided on the handle portion. The key discrimination sensor 18
Is a sensor for determining whether or not the key 10 is inserted in the ignition switch, and is turned on when the key 10 is inserted.

Also, the key switch 20,
A door switch 22, a door handle approach sensor 24, a door lock actuator 26, and a door horn 28 are provided.

The key switch 20 is turned on when the key 10 is inserted into a key cylinder lock provided on the door and the door is unlocked.

The door switch 22 is turned on when the door is opened.

The door handle approach sensor 24 is a capacitance sensor and detects that a hand or the like approaches the door handle.

The door horn 28 is for notifying the driver who got off the vehicle that the key 10 has been left in the vehicle or locked.

The transmitting antenna 14 and the receiving antenna 16
a, 16b, key discrimination sensor 18, key switch 20,
The door switch 22, the door handle approach sensor 24, the door lock actuator 26, and the door horn 28 are
It is electrically connected to the control unit 30.

The control unit 30 includes a unique signal collating means 32 for comparing and collating a personal identification code signal from the key 10 received by the receiving antennas 16a and 16b with a prestored unique code signal of the vehicle body, and a key discrimination sensor. Dismounting timing detecting means 34 for detecting dismounting of the driver based on the outputs of 18 and the door switch 22.
A door lock actuator drive means 36 for driving the door lock actuator 26 based on a signal from the unique signal matching means 32 or the dismounting timing detection means 34, and a key for detecting that the key 10 is left in the vehicle. It comprises a misplacement detection means 38, a request signal transmission means 40 for generating and transmitting a request signal based on a signal from the door handle approach sensor 24 or the key misplacement detection means 38, and a timer 42.

The door lock actuator drive means 36 and the key misplacement detection means 38 are connected to the door horn 28 via a door horn drive relay 44.

The locking of the door by the auto-lock mechanism of the request-type locking device thus constructed will be described with reference to the flow charts shown in FIGS.

First, from the ON state of the key discrimination sensor 18 to the OF state.
After it becomes F, the door switch in the driver's seat is turned from ON to OFF
It is confirmed by the getting-off timing detection means 34 whether or not the time has come (step S1). That is, when the signal is input to the dismounting timing detection means 34 as described above, after the driver removes the key 10 from the ignition switch, the door is opened to the outside of the vehicle and the door is closed to dismount. To determine.

When it is confirmed that the driver has gone out of the vehicle and closed the door, a drive signal (lock output (A)) is derived from the door lock actuator drive means 36 to the door lock actuator 26. Then, all doors are locked by the door lock actuator 26 (step S2).

Subsequently, when a drive signal is derived from the door lock actuator drive means 36 to the door horn drive relay 44, an alarm is sounded in the door horn 28 to notify the driver of the door lock (step S).
3).

Next, it is confirmed whether or not the key 10 is left in the vehicle (step S4). Specifically, as shown in the flowchart of FIG.
A transmission signal is derived from 8 to the request signal transmission means 40, and the transmission signal is transmitted from the transmission antenna 14 to the key 1 by this transmission signal.
0, a request signal is transmitted to the key 10, and a secret code signal is emitted from the key 10 to receive antenna 16a (16b)
Will be received at. This key code signal is sent at a predetermined interval using the key 1
Received from 0 to 3 times and received the electric field strength (D1, D
2, D3) are stored (step S4-1).

Next, it is determined whether or not the electric field strengths are equal (step S4-2). If they are equal,
Since it means that the position of the key 10 has not changed, it is determined that the key 10 has been left behind in the vehicle.

If they are not equal, it is determined whether or not the electric field strength has weakened with time (step S).
4-3). If it weakens over time, it is possible that the driver carrying the key 10 is approaching the vehicle, but in this case the driver is not approaching the vehicle but rather the battery It is in a weakened state, and this is regarded as a misplacement of the key 10.

Further, when the electric field strength is not weakened with time, it is judged whether or not the difference between the electric field strengths D1, D2 and D3 is within a predetermined range (step S4-4). In this case, it is determined that the key 10 has not actually moved because it is an error due to noise, and it is determined that the key 10 has been left behind.

If neither of these is the case, it is considered that the driver carries the key 10.

When it is determined that the key 10 has not been left behind, the key 10 is returned within a predetermined time from the lock output (A).
It is confirmed whether or not the antilock switch of No. 2 is turned on (step S5), or whether the key switch 20 is turned on (step S6). That is, it is determined whether the door is unlocked within the predetermined time.

When the unlocking operation is not performed, the door lock actuator 26 is driven again by the drive signal (lock output (B)) from the door lock actuator driving means 36 to lock the door ( Step S7). This is to prevent the locking from being reliably performed due to friction of the door lock actuator 26 during the previous locking by locking again.

If it is confirmed in step S4 that the key 10 has been left behind, an unlock signal is derived from the door lock actuator driving means 36 to the door lock actuator 26 to unlock the door (step S8). .

Next, a signal is derived from the door lock actuator drive means 36 to the door horn drive relay 44, and an alarm is issued from the door horn 28. As a result, the driver is notified that the key 10 has been left behind (step S9).

Subsequently, it is determined whether or not any door switch 22 is turned on within a predetermined time from the lock output (A) (step S10). That is, it is determined whether or not the driver noticed that the key 10 was left behind and opened the door.

When the door is not opened, it is considered that the driver has left the vehicle without noticing that the key 10 is left behind, and after a predetermined time from the lock output (A), the door lock actuator driving means 36 causes the door lock. A drive signal (lock output (B)) is derived to the actuator 26 for re-locking the door (step S11).

Further, the key placement forgetting detection means 38 transmits a request signal transmission prohibition signal to the request signal transmission means 40, and transmission of the request signal is prohibited (step S12). In this auto-lock mechanism 12, when a human hand approaches the door handle, the door-handle approach sensor 24 detects it, and the auto-lock mechanism 12 sends a request signal to the key 10. The request signal causes the key 10 to access the secret code. When the code signal is transmitted and the secret code signal coincides with the unique code signal by the unique signal collating means 32, the door lock actuator 26 is driven and unlocked. Therefore, if the key 10 is left in the vehicle, there is a concern that the door may be opened regardless of who touches the door handle. Therefore, in order to prevent this, the transmission of the request signal is prohibited.

After this, it is judged whether the key discrimination sensor 18 or the key switch 20 is ON (step S13 in FIG. 4), and if it is ON, the request signal transmission prohibition is released (step S14). This means that if the door was unlocked, the driver was back again. Therefore, if the request signal transmission prohibition state is continued in this state, it is possible to prevent the driver from being unable to unlock the personal identification code signal when the driver leaves the vehicle again.

As described above, in the auto-lock mechanism of the request-type locking device according to the present embodiment, the driver can move outside the vehicle by removing the key 10 from the ignition key switch and confirming that the door of the driver's seat is opened or closed. After exiting, the door can be locked automatically. Moreover, since it is configured to repeat the locking operation again when the unlocking operation is not performed within the predetermined time, even when the locking operation cannot be reliably performed by the first locking operation due to the timing of opening and closing the door, etc. Securely locked the second time.

Further, when the misplacement of the key 10 is detected, the key is immediately unlocked and an alarm is issued from the door horn 28 so that the driver can be informed of the misplacement of the key 10 and the key 10 can be taken out. . Moreover, if the door is not opened within the predetermined time, the door is locked again and the transmission of the request signal is prohibited, and a third person touches the door handle to open the door and steal the vehicle. Is being blocked.

Further, the antilock switch is operated unless it is determined in step S1 that it is the time to get off the vehicle, or after the vehicle is once getting off (step S).
5) Alternatively, if the key 10 is inserted into the key cylinder (step S6) to bring it into the anti-lock state, the door is not locked by the auto-lock mechanism. Therefore, when cleaning the vehicle, it is possible to prevent the door from being locked and unlocked repeatedly each time the door is opened and closed.

[0047]

The automatic locking mechanism of the request type locking device according to the present invention has the following effects.

That is, the door is automatically locked by the lock actuator driving means at the timing when the driver gets off the vehicle, and the door is locked again if the door is not unlocked within a predetermined time from the getting-off timing. Therefore, even if the door is not locked for the first time due to the friction of the lock actuator, it can be locked for the second time with certainty.

If the driver forgets to leave the portable communication device in the vehicle when he / she gets off the vehicle, the driver is alerted by the notification means and the door is unlocked for a predetermined time so that the driver can open the door. The door is opened and the door is locked again when a predetermined time has elapsed. Therefore, it is possible to prevent the driver from forgetting to leave the portable communication device, and even if the portable communication device is left behind, the door can be locked without fail.

When the portable communication device is left in the vehicle, the transmission of the request signal from the vehicle-mounted device to the portable communication device is stopped. Accordingly, even if a third person touches the door handle or the like, the request signal is not transmitted from the vehicle-mounted device to the portable communication device, so that the door is not unlocked and the theft can be reliably prevented.

[Brief description of drawings]

FIG. 1 is a schematic configuration perspective view of an auto-lock mechanism according to the present invention.

FIG. 2 is a schematic configuration block diagram of an auto-lock mechanism according to the present invention.

FIG. 3 is a control flowchart of the auto-lock mechanism according to the present invention.

FIG. 4 is a control flowchart of the auto lock mechanism according to the present invention.

FIG. 5 is a flowchart of detection of forgetting to put a key in the auto lock mechanism according to the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Key integrated portable communication device 12 ... Auto lock mechanism 34 ... Dismounting timing detection means 36 ... Door lock actuator drive means 38 ... Key misplacement detection means 40 ... Request signal transmission means

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E05B 49/00-49/04 E05B 65/12-65/42

Claims (3)

(57) [Claims] 1. A request signal is transmitted from a vehicle-mounted device to a portable communication device carried by a driver, and in response thereto, a password code signal is returned from the portable communication device to the vehicle-mounted device, and the password code signal and the vehicle are transmitted. A key insertion discriminating means for discriminating whether or not a key is inserted in an ignition switch in an auto lock mechanism of a request type locking device in which a door is automatically locked or unlocked by collating a unique code signal. And, after the key insertion determining means determines that the key has been removed from the ignition switch, the exit detection means for detecting that the driver's seat door of the doors has been closed, and the unlocking operation of the door And an unlocking state detecting means for detecting that the door is locked by operating a lock actuator based on the output from the getting-off detection means. If the door is not unlocked within a predetermined time after the output of the alighting detection means is generated, the door is locked again, and if the door is unlocked within the predetermined time, the door is locked. An automatic lock mechanism for a request-type locking device, which comprises: a lock actuator driving means that does not operate. 2. The automatic lock mechanism according to claim 1, which detects that the portable communication device is left in the vehicle and sends an unlock signal to the lock actuator driving means to unlock the door for a predetermined time. A communication device misplacement detection means for transmitting a locking signal for locking the door to the lock actuator driving means after the elapse of the predetermined time, and a notification means for notifying a driver when the mobile communication device is misplaced. Automatic locking mechanism of request type locking device. 3. The request-type locking device according to claim 2, further comprising request signal transmission inhibiting means for inhibiting transmission of a request signal transmitted from the vehicle-mounted device to the portable communication device. Auto lock mechanism.