JP2000213216A - Automatic door lock device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic door lock device in which the operating condition of various actuators provided in a vehicle can be surely informed to a driver. SOLUTION: This automatic door lock device 1 for vehicle is provided with a transmitter-receiver 2 and a portable machine 3. The transmitter-receiver 2 is connected to a door curtain switch 4 and a door lock drive device 5. The transmitter-receiver 2 is provided with a transmitting circuit 11, a receiving circuit 12, and a microcomputer 13. The transmitter-receiver 2 outputs a request signal when the door of a vehicle is in the closed state, and outputs a warning signal when the door is in the opened state. Meanwhile, the portable machine 3 is provided with a receiving circuit 21, a microcomputer 22, a transmitting circuit 22, and a buzzer 24. After receiving a warning signal from the transmitter-receiver 2, when the warning signal or the request signal can not be received, the microcomputer 22 of the portable machine 3 drives the buzzer 24 to generate a warning sound.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art In recent years, automobiles have been required to have not only improved basic performance and safety but also improved operability. For example, a remote control device for a vehicle that remotely controls various devices provided in a vehicle is a typical example.

As such a remote device for a vehicle, there is an automatic door lock device for automatically locking and unlocking a door lock of a vehicle, that is, a so-called smart entry device. This smart entry device usually includes a portable device carried by the owner (driver) of the vehicle, and a transmitting / receiving device mounted on the vehicle. From the transmission / reception device, a request signal including a magnetic field or a radio wave is output to a predetermined area around the vehicle via an antenna provided in the vehicle. When the portable device enters the area, it transmits a transmission signal in response to the request signal. The transmission / reception device automatically unlocks the door lock when the transmission signal is received, and automatically locks the door lock when the transmission signal cannot be received. That is, the driver does not need to perform a special operation for locking and unlocking the door lock, so that the operability of the vehicle is improved.

By the way, in such a smart entry device, the door lock is not locked when the door is open or half-door. For this reason,
Even if the driver leaves the vehicle with the door halfway open, the door lock will not be locked. Therefore, if the driver does not notice that the vehicle is in the half-door state, the vehicle is left with the door lock unlocked, which poses a security problem.

In order to solve such a problem, conventionally,
For example, there is a smart entry device described in JP-A-63-31482. In this smart entry device, the CPU of the transmission / reception device detects the open / closed state of the door. When the transmission / reception device cannot receive a transmission signal from the portable device when the door is open (including the half-door state), a warning sound is emitted from a buzzer provided in the vehicle. . In other words, the buzzer emits an alarm when the portable device leaves the output area of the request signal.

[0006] That is, in the smart entry device described in this publication, even when the driver leaves the vehicle without noticing the state of the half-door, the driver is alerted by a buzzer to alert the driver to the above problem. I am trying to eliminate it.

[0007]

However, in such a conventional smart entry device, a buzzer sounds from the vehicle side. Therefore, when the driver leaves the vehicle in a lively place or enters a building, the driver may not notice the alarm sound from the buzzer.

The smart entry device emits a warning sound from a buzzer based on the open state of the door and the presence or absence of a transmission signal from the portable device. Therefore, even when the door is open, it is necessary to continue transmitting the transmission signal from the portable device in response to the request signal, and thus the power consumption of the portable device increases. As a result, there is also an inconvenience that the battery life of the portable device is short.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an automatic door lock device capable of surely informing a driver of operating states of various actuators provided in a vehicle. Is to do.

It is another object of the present invention to provide an automatic door lock device capable of reducing the power consumption of a battery of a portable device.

[0011]

In order to solve the above-mentioned problems, according to the first aspect of the present invention, a portable device for transmitting a transmission signal and a drive control of a door lock driving device based on the transmission signal. A transmission / reception device, wherein the transmission / reception device intermittently outputs a request signal for requesting the portable device to transmit the transmission signal to a predetermined area around a vehicle; and Receiving means for receiving a transmission signal, and an ID included in the transmission signal
An automatic door lock for a vehicle, comprising: control means for comparing a code with a preset ID code and, when the ID codes coincide with each other, controlling drive of a door lock driving device based on the transmission signal. In the apparatus, the transmission / reception device outputs a warning signal to the predetermined region when a detection unit that detects an operation state of various actuators provided in the vehicle outputs a predetermined detection signal. The portable device further includes a portable device-side receiving unit that receives the request signal and the warning signal, a notifying unit that notifies a driver that the actuator is in a predetermined operation state, and the warning signal. After receiving, the portable device-side control for operating the notification means when at least one of the warning signal and the request signal is not received. And summarized in that and means.

According to a second aspect of the present invention, in the automatic door lock device for a vehicle according to the first aspect, the portable device does not transmit the transmission signal when receiving the warning signal.

According to a third aspect of the present invention, in the automatic door lock device for a vehicle according to the first or second aspect, the transmission / reception device does not output the request signal when the warning signal is output. And

According to the fourth aspect of the invention, the first to third aspects are provided.
In the automatic door lock device for a vehicle according to any one of the above, after receiving the warning signal, the portable device may receive the warning signal and / or the request signal for a predetermined time from the time when the portable device stops receiving at least one of the warning signal and the request signal. The gist is that the notification means is operated after the elapse.

Hereinafter, the "action" of the present invention will be described. According to the first aspect of the present invention, when the detection means outputs a predetermined detection signal, that is, when various actuators provided in the vehicle are in a predetermined operation state,
The operating state is reported to the driver by the reporting means provided in the portable device. Since the portable device is carried by the driver, even when the driver leaves the vehicle in a lively place or enters a building, the driver can reliably grasp the operation of the notification means. . Therefore,
The driver can surely grasp the operation states of various actuators. As a result, the inconvenience of leaving the vehicle unattended while the door lock is unlocked can be reliably eliminated.

According to the second aspect of the present invention, the portable device does not transmit the transmission signal even when receiving the warning signal. Therefore, the power consumption for transmitting the transmission signal by the portable device can be reduced, and the life of the battery of the portable device can be prevented from being shortened.

According to the third aspect of the present invention, the transmitting / receiving device does not output a request signal when outputting a warning signal. For this reason, it is possible to reduce the power consumption for outputting the request signal.

According to the fourth aspect of the present invention, the notifying means operates at a point in time when a predetermined time has passed after receiving at least one of the warning signal and the request signal after receiving the warning signal. It has become. Therefore, for example, when the driver moves away from the predetermined area where the request signal and the warning signal are output for a short time, the notification unit does not operate. For this reason, for example, when the driver is performing work, the notification unit is prevented from operating wastefully, and the power consumption for operating the notification unit can be reduced.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS. As shown in FIG. 1, an automatic door lock device for a vehicle (hereinafter, simply referred to as a “door lock device”) 1 includes a transmission / reception device 2 mounted on a vehicle and a portable device carried by an owner (driver) of the vehicle. Machine 3
And Further, the transmission / reception device 2 is connected with a door courtesy switch 4 as a detection means and a door lock driving device 5. The door courtesy switch 4
“2” is an existing switch provided at each of the opening and closing portions of each door 6 as shown in FIG. Normally, each door courtesy switch 4 detects the open / closed state of the corresponding door 6 and functions as a lighting switch of a half door prevention lamp for prompting prevention of a half door, or functions as a lighting switch of a door courtesy lamp in a vehicle compartment. Things.

The transmission / reception device 2 includes a transmission circuit 11 as request signal output means and a warning signal output means, a reception circuit 12 as reception means, and a microcomputer (hereinafter simply referred to as "microcomputer") 13 as control means. ing. Antennas 14 and 15 are connected to the transmission circuit 11 and the reception circuit 12, respectively.

The transmission circuit 11 is a circuit for modulating a request signal or a warning signal output from the microcomputer 13 into a radio signal of a predetermined frequency and outputting the radio signal to a predetermined area outside the vehicle compartment via the antenna 14. is there. Therefore, when the request signal or the warning signal is output, the radio signal is output to a predetermined area A1 around the vehicle as shown by a two-dot chain line in FIG. The warning signal is a signal in which a warning code composed of, for example, a 4-bit binary code is added to the footer (end) of the request signal, as shown in FIGS. This warning code is a code preset for each vehicle.

The receiving circuit 12 receives an ID code signal as a transmission signal transmitted from the portable unit 3 through an antenna 15 and demodulates the ID code signal into a pulse signal to generate a reception signal. Circuit for Then, the received signal is output to the microcomputer 13.

The microcomputer 13 includes a C (not shown)
It is a CPU unit including a PU, a ROM, a RAM, and the like. The microcomputer 13 includes the door courtesy switch 4
And the door lock driving device 5 is connected. The microcomputer 13 outputs a request signal or a warning signal intermittently according to the open / close state of the door 6 by the door courtesy switch 4. More specifically, a request signal is output from the microcomputer 13 when the door courtesy switch 4 detects the closed state of the door 6, and a warning signal is output from the microcomputer 13 when the open state of the door 6 is detected. ing.

The microcomputer 13 stores a predetermined ID code which is set in advance. When the received signal is input, the microcomputer 13 determines its own ID code and the ID code included in the received signal. Compare. When the ID codes match, the microcomputer 13 outputs a drive signal to the door lock drive device 5. The door lock driving device 5 receives the driving signal and unlocks (unlocks) the door 6.

On the other hand, the portable device 3 is provided as an accessory to an ignition key carried by the driver. The portable device 3 includes a receiving circuit 21 as a portable device-side receiving unit, a microcomputer (hereinafter, simply referred to as a “microcomputer”) 22 as a portable device-side control unit, a transmitting circuit 23 as a portable device-side transmitting unit, and a notification. A buzzer 24 is provided as a means. The receiving circuit 21 and the transmitting circuit 23 include:
Antennas 25 and 26 are connected respectively.

The reception circuit 21 receives a request signal or a warning signal from the transmission / reception device 2 via the antenna 25, demodulates the signal into a pulse signal to generate a reception signal, and transmits the reception signal to the microcomputer 22. It is a circuit for outputting.

The microcomputer 22 includes a C (not shown)
It is a CPU unit including a PU, a ROM, a RAM, and the like. If the received signal is a request signal, the microcomputer 22 outputs an ID code signal as a transmission signal including a preset predetermined ID code. The microcomputer 22 is connected to a buzzer 24 and stores a preset warning code. If the received signal is a warning signal, the warning code included in the received signal is compared with its own warning code.
The microcomputer 22 outputs a drive signal to the buzzer 24 when the warning codes match and the received signal has not been received for a predetermined time without receiving a request signal after receiving the warning signal.

When the ID code signal is output from the microcomputer 22, the transmission circuit 23 modulates the ID code signal into a radio signal of a predetermined frequency and transmits the radio signal to the outside via the antenna 26. Circuit.

When a drive signal is output from the microcomputer 22, the buzzer 24 generates a warning sound based on the drive signal. Next, the operation of the door lock device 1 configured as described above will be described.

As described above, the door courtesy switch 4
When the open state of the door 6 is detected by the
, A warning signal in which a warning code is added to the footer of the request signal is output intermittently. This warning signal is output at a period of time T1, as shown in FIG. When the portable device 3 is located in the area A1 shown in FIG. 2, a warning signal is received by the receiving circuit 21 of the portable device 3 as shown in FIG. While the transmitting / receiving device 2 is outputting the warning signal, the ID code signal is not transmitted from the transmitting circuit 23 of the portable device 3. During this time, the door lock driving device 5 holds the unlocked state.

Thereafter, when the closed state of the door 6 is detected, as shown by a point P1 in the figure, the request signal is output from the transmission / reception device 2. At this time, if the portable device 3 is located in the predetermined area A1, as shown by a point P2 in FIG.
1 receives the request signal. And
An ID code signal is output from the transmission circuit 23 of the portable device 3. Therefore, the transmission / reception device 2 receives this ID code signal, determines that the portable device 3 is located within the predetermined area A1, and causes the door lock driving device 5 to hold the door 6 in the unlocked state.

When the portable device 3 is no longer located in the predetermined area A1, the receiving circuit 21 of the portable device 3 stops receiving the request signal, as shown by a point P3 in FIG. For this reason, the transmission circuit 23 of the portable device 3 does not output the ID code signal. As a result, the transmitting / receiving device 2
D code cannot be received. Therefore, the transmitting / receiving device 2 determines that the portable device 3 is not located in the predetermined area A1, and as shown by the point P4, the door lock driving device 5
The door 6 is locked.

By the way, for example, when the driver leaves the vehicle without noticing the half-door state of the door 6, the portable device 3 may not be located in the predetermined area A1 while the door 6 is open. That is, as shown by point P5 in FIG. 4, when the portable device 3 is no longer located in the predetermined area A1, the receiving circuit 21 of the portable device 3 cannot receive the warning signal.
In such a case, the buzzer 24 is turned on at a point P6 at which a predetermined time T2 has elapsed from the point P5. That is, the buzzer 24 emits an alarm sound at the point P6. Therefore, the portable device 3 that has received the warning signal
Goes out of the predetermined area A1 without receiving the request signal, the buzzer 24 emits an alarm sound after the predetermined time T2 has elapsed. In the present embodiment, the predetermined time T2 is set to about 2 to 5 seconds.

As a result, in such a door lock device 1, the door 6 is locked when the portable device 3 is not located in the predetermined area A1 with the portable device 3 receiving the request signal after receiving the warning signal. The Rukoto. However, when the portable device 3 stops receiving the request signal after the portable device 3 has received the warning signal and the portable device 3 is no longer located in the predetermined area A1, the door 6 is not locked and the buzzer 2
4 will sound an alarm. That is, since the door 6 is not locked when the door 6 is in the open state, a warning sound is emitted from the buzzer 24 to draw the driver's attention. Therefore, even if the driver leaves the vehicle without noticing the half-door state of the door 6, the driver can recognize the warning sound from the buzzer 24.

Therefore, according to the present embodiment, the following effects can be obtained. (1) The alarm sound is generated from a buzzer 24 provided in the portable device 3. Since the portable device 3 is carried by the driver, even when the driver leaves the vehicle in a lively place or enters a building, the driver must surely recognize the alarm sound from the buzzer 24. Can be. Therefore, the driver can surely grasp that he / she has left the vehicle with the door 6 open.

(2) Even if the portable device 3 receives the warning signal,
Do not transmit D code signal. Therefore, the portable device 3 has the ID
The power consumption for transmitting the code signal can be reduced, and the battery life of the portable device 3 can be prevented from being shortened.

(3) The buzzer 24 emits an alarm sound after a lapse of a predetermined time T2 since the portable device 3 cannot receive the alarm signal from the transmission / reception device 2. That is, for example, when the driver moves away from the predetermined area A1 for a short time, the buzzer 24 does not operate. For this reason, the buzzer 24 is prevented from being uselessly operated when the driver is performing work, and the power consumption for generating an alarm sound can be reduced.

(4) The request signal and the warning signal are both output from the transmission circuit 11 of the transmission / reception device 2 via the antenna 14. That is, the transmission circuit for outputting the request signal and the transmission circuit for outputting the warning signal are common. Therefore, the number of parts and the manufacturing cost can be reduced as compared with a case where a transmission circuit for outputting each signal is separately provided. Further, the size of the transmission / reception device 2 can be reduced.

(5) The warning signal has a predetermined warning code preset for each vehicle. The microcomputer 22 of the portable device 3 stores a warning code corresponding to the warning code. Therefore, the portable device 3 responds only to the warning signal from the own vehicle, and does not respond to the warning signal from another vehicle. Therefore, malfunction of the portable device 3 can be reliably prevented.

The embodiment of the present invention may be modified as follows. In the above-described embodiment, when the portable device 3 that has received the warning signal goes out of the predetermined area A1 without receiving the request signal, after a lapse of a predetermined time T2 from the time when the warning signal cannot be received. An alarm sound is emitted from the buzzer 24. On the other hand, a warning sound may be emitted from the buzzer 24 when the warning signal cannot be received.

In the above embodiment, the signal in which the warning code is added to the footer of the request signal is used as the warning signal. However, only the warning code may be used as the warning signal. By doing so, power consumption for outputting the request signal can be reduced.

In the transmission / reception device 2 of the embodiment, the request signal and the warning signal are transmitted by the common transmission circuit 11
However, a transmission circuit for outputting each of these signals may be separately provided.

In the above-described embodiment, the warning signal is output only when the door 6 is open, but in addition to this, the warning signal is output even when the light is on or the window is open. May be output. In this way, the driver can be made aware of forgetting to turn off the light or forgetting to close the window, thereby preventing running out of the battery and further improving security. These may be embodied by one or two selected.

In the above-described embodiment, the buzzer 24 is provided in the portable device 3 to alert the driver with an alarm sound. That is, the buzzer 24 is used as the notification means to audibly alert the driver, but instead of the buzzer 24, a voice synthesizing device may be used to alert the driver. .

Further, it is also possible to use a vibration device to call attention to the sense of touch, or use a lighting device such as an LED or a light to call attention visually. That is, the present invention can be applied to anything that appeals to the driver's five senses.

These may be embodied by any one of them. Further, a plurality of types of devices may be combined and embodied. That is, for example, the buzzer 24 or the voice synthesizer and the vibration device are used to aurally and tactually alert the driver, or the vibration device and the lighting device are used to tactually and visually pay attention to the driver. You may be prompted. Further, the buzzer 24 or the voice synthesizing device, the vibration device, and the lighting device may all be used to audibly, tactually, and visually alert the driver. In this way, the driver can be more surely alerted. Note that a switching mechanism may be provided to selectively operate each device.

In the above embodiment, a code set in advance for each vehicle is set as the warning code included in the warning signal. However, the present invention is not limited to this, and a code common to each vehicle may be set as the warning code.

In the above embodiment, the request signal and the warning signal are output as radio signals, but they may be output as magnetic signals. Next, in addition to the technical idea described in the claims,
The technical ideas grasped by the embodiment described above are listed below.

(1) In the automatic door lock device for a vehicle according to claim 1, when the predetermined detection signal is output from the detection means, the transmission / reception device sends the warning signal instead of the request signal. An automatic door lock device for a vehicle, characterized by outputting.

According to the invention described in the technical idea (1), power consumption can be reduced as compared with the case where both the request signal and the warning signal are output. (2) Any one of claims 1 to 4 and the technical idea (1)
3. The automatic door lock device for a vehicle according to claim 1, wherein the request signal output unit and the warning signal output unit are common output units.

According to the invention described in the technical concept (2), the number of parts and the manufacturing cost can be reduced.
Further, the size of the transmission / reception device can be reduced. (3) In the automatic door lock device for a vehicle according to any one of claims 1 to 4, and technical ideas (1) and (2), the detection means includes a door courtesy switch that detects at least a door open / closed state. Wherein the predetermined detection signal includes a signal outputted when the door courtesy switch detects an open state of the door.

According to the invention described in the technical concept (3), it is possible to reliably prevent the vehicle from being left while the door lock is unlocked. (4) The automatic door lock device for a vehicle according to any one of claims 1 to 4, and technical ideas (1) to (3), wherein the notification unit includes an audible notification unit, a tactile notification unit, And one or more selected from visual notification means.

According to the invention described in the technical idea (4), the driver can be more surely alerted when a plurality is used. (5) In the automatic door lock device for a vehicle according to the technical idea (4), the audible notification means includes a buzzer or a voice synthesizer, and the tactile notification means includes a vibration device such as a vibrator; An automatic door lock device for a vehicle, wherein the visual notification means comprises a lighting device such as an LED or a light.

(6) Claims 1 to 4, Technical idea (1)
In the automatic door lock device for a vehicle according to any one of (1) to (5), the warning signal includes a predetermined warning code set in advance for each vehicle, and the portable device-side control means includes the warning code. An automatic door lock device for a vehicle, wherein a warning code corresponding to the vehicle is stored.

According to the invention described in the technical concept (6), the portable device does not respond to the warning signal output from the transmitting / receiving device mounted on another vehicle. Therefore, malfunction of the portable device can be reliably prevented.

(7) A portable device for transmitting a transmission signal, request signal output means for intermittently outputting a request signal for requesting the portable device to transmit the transmission signal to a predetermined area around the vehicle, Warning signal output means for outputting a warning signal to the predetermined area when the detection means for detecting the operation states of the various actuators provided outputs a predetermined detection signal, and receiving a transmission signal from the portable device. Receiving means, and control means for comparing an ID code included in the transmission signal with a preset ID code, and when the ID codes coincide with each other, controlling the door lock driving device based on the transmission signal. In a portable device of an automatic door lock device for a vehicle, comprising a transmitting / receiving device, a portable device-side receiving device for receiving the request signal and the warning signal. And a notifying means for notifying a driver that the actuator is in a predetermined operation state, and when receiving at least one of the warning signal and the request signal after receiving the warning signal, A portable device of an automatic door lock device for a vehicle, comprising: a portable device-side control unit that operates the notification unit.

[0057]

As described in detail above, according to the first aspect of the present invention, since the notification means is provided in the portable device carried by the driver, the driver can reliably operate the notification means. Can be grasped. That is, the operating states of various actuators provided in the vehicle can be reliably notified to the driver.

According to the second aspect of the present invention, the power consumption of the portable device for transmitting the transmission signal can be reduced, and the life of the battery of the portable device can be prevented from being shortened. .

According to the third aspect of the invention, it is possible to reduce power consumption for outputting a request signal. According to the fourth aspect of the present invention, it is possible to prevent the notification means from being uselessly operated, for example, when the driver is performing work, and to reduce power consumption for operating the notification means. Will be able to do it.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an internal configuration of an embodiment of the present invention.

FIG. 2 is a plan view showing a vehicle equipped with the vehicle automatic door lock device of the embodiment.

FIG. 3 is a time chart showing the operation of the embodiment.

FIG. 4 is a time chart showing the operation of the embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Automatic door lock device for vehicles, 2 ... Transmission / reception device, 3 ...
Portable device, 4 ... Door courtesy switch as detection means,
5 door lock driving device, 6 door, 11 transmitting circuit as transmitting means, 12 receiving circuit as receiving means, 1
3: microcomputer as control means, 21: reception circuit as portable device side receiving means, 22: microcomputer as portable device side control means, 23 ... transmission circuit as portable device side transmission means,
24 ... Buzzer as notification means.

Claims (4)

[Claims] 1. A portable device for transmitting a transmission signal, and a transmission / reception device for driving and controlling a door lock driving device based on the transmission signal, wherein the transmission / reception device transmits the transmission signal to the portable device. Request signal output means for intermittently outputting a request signal for requesting to a predetermined area around the vehicle, receiving means for receiving a transmission signal from the portable device, and an ID code included in the transmission signal and An automatic door lock device for a vehicle, comprising: control means for comparing an ID code with the ID code, and when the ID codes match each other, controlling the door lock drive device based on the transmission signal. A warning signal for the predetermined area when a detection means for detecting an operation state of various actuators provided in the vehicle outputs a predetermined detection signal. The portable device further includes a warning signal output unit that outputs the request signal, the portable device side receiving unit that receives the request signal and the warning signal, and a notification unit that notifies a driver that the actuator is in a predetermined operation state. And a portable device-side control means for operating the notifying means when at least one of the warning signal and the request signal is not received after receiving the warning signal. Automatic door lock device. 2. The automatic door lock device for a vehicle according to claim 1, wherein the portable device does not transmit the transmission signal when receiving the warning signal. 3. The automatic door lock for a vehicle according to claim 1, wherein the transmission / reception device does not output the request signal when the warning signal is output. apparatus. 4. The automatic door lock device for a vehicle according to claim 1, wherein the portable device receives at least one of the warning signal and the request signal after receiving the warning signal. An automatic door lock device for a vehicle, wherein the notification means is operated after a predetermined time has elapsed from the time when one of them is no longer received.