JPH0941747A - Vehicle keyless door lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to eliminate anxiety against operational failures affected by external electro-magentic wave noises and lock and unlock with precision. SOLUTION: In a vehicle keyless door lock device having a transmitter which transmits a signal by infrared rays, a receiver 2 which receives the signal transmitted from the transmitter, door lock actuators 4a and 4b which lock and unlock vehicle doors 3a and 3b and a control device 5 which controls the operation of the door lock actuators based on the signal transmitted from the receiver, signals are transmitted from the receiver to the control device by way of a space transmission means for infrared rays and so forth. In addition to that, the receiver is provided on the lower edge of a room mirror 7 hanging from a ceiling 6 of a car room.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle keyless door lock device for locking / unlocking a vehicle door by remote control from outside the vehicle.

[0002]

2. Description of the Related Art When an infrared code signal is sent from a portable transmitter to a receiver on the vehicle body side, it is determined whether or not this signal is a normal code. If this is a normal code, a drive signal is sent to a door lock actuator. There is known a keyless door lock device for a vehicle in which a door is sent to lock and unlock the door.

In such a vehicle keyless door lock device, a receiver is generally provided in the vicinity of the outside door handle of each of the left and right doors, but a wide directional receiver is provided on the ceiling in the vehicle compartment. There is one in which an infrared code signal from a transmitter outside the vehicle can be received through a window glass by providing a wider reception area.

[0004]

However, when the receiver is installed on the ceiling as described above, a harness for transmitting a signal to the control device for controlling the operation of the door lock actuator is installed in the roof panel from the inside of the pillar. After that, it must be laid up to the inside of the dashboard in which the control device is arranged. Therefore, it is feared that the signal transmission harness becomes long and it becomes easy to pick up external electromagnetic noise, and normal operation is hindered.

The present invention has been devised in order to eliminate such disadvantages of the prior art, and its main purpose is to:
An object of the present invention is to provide a vehicle keyless door lock device configured so that an accurate locking / unlocking operation can be performed without the risk of malfunction due to the influence of external electromagnetic wave noise.

[0006]

According to the present invention, there is provided a transmitter for emitting a signal by infrared rays, a receiver for receiving a signal emitted by the transmitter, and a door for a vehicle to be locked / unlocked. A keyless door lock device for a vehicle having a door lock actuator to be locked and a control device for controlling the operation of the door lock actuator based on a signal from the receiver, wherein the receiver is provided via a space transmitting means. This is achieved by providing a vehicle keyless door lock device characterized in that a signal is transmitted to the control device.

Particularly, it is preferable that the space transmitting means is infrared rays. In addition to this, it is preferable that the receiver is provided at a lower edge portion of a rearview mirror suspended from a ceiling of a vehicle compartment.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The structure of the present invention will be described in detail below with reference to the embodiments shown in the accompanying drawings.

FIG. 1 shows the interior of a vehicle to which a vehicle keyless door lock device according to the present invention is applied.
This vehicle keyless door lock device includes a transmitter 1 that emits a code signal by infrared rays, a receiver 2 that receives the code signal emitted by the transmitter 1, and vehicle doors 3a and 3b.
Door lock actuators 4a and 4b for locking and unlocking
And a control device 5 for controlling the operation of both door lock actuators 4a and 4b based on a signal from the receiver 2.

The receiver 2 is provided at the lower edge of the room mirror 7 suspended from the ceiling 6 of the vehicle compartment. This receiver 2
The signal is transmitted from the control device 5 to the control device 5 by infrared rays, and the control device 5 receives the infrared code signal emitted from the receiver 2 with the light receiving window exposed to the front, It is arranged on the board 8. The control device 5 and the door lock actuators 4a and 4b are electrically connected by harnesses 9a and 9b, respectively.

As shown in FIG. 2, the receiver 2 comprises photodiodes 21a and 21b for detecting infrared rays, a conversion circuit 22, a drive circuit 23, and a light emitting diode 24 for generating infrared rays. A power line 26 from a battery 25 is connected to the circuit 22. The photodiodes 21a and 21b are respectively arranged toward the right side and the left side of the vehicle body so that the infrared code signals transmitted from both the left and right sides of the vehicle body can be received. On the other hand, the light emitting diode 24 is arranged toward the control device 5 with some directivity.

When the transmission switch 1a of the transmitter 1 is operated from outside the vehicle to transmit the infrared code signal to the receiver 2 through the window glass, the infrared code signals detected by the photodiodes 21a and 21b of the receiver 2 are transmitted. However, after being subjected to electrical processing such as amplification in the conversion circuit 22 as an electric signal, it is input to the drive circuit 23. And
In the drive circuit 23, a drive signal corresponding to the input electric signal is sent to the light emitting diode 24, and the same infrared code signal as that generated by the transmitter 1 is sent to the control device 5. The infrared code signal emitted from the light emitting diode 24 does not necessarily have to be the same as that generated by the transmitter 1.

The control device 5 comprises a photodiode 27 for detecting infrared rays, a conversion circuit 28, and a control circuit 29. The infrared code signal from the light emitting diode 24 of the receiver 2 is detected by the photodiode 27. Then, after being subjected to electrical processing such as amplification in the conversion circuit 28 as an electrical signal, it is input to the control circuit 29.

The control circuit 29 has a code signal collating means for collating a code indicated by the inputted electric signal with a prestored unique code, and an operating mode discriminating means for discriminating a locked / unlocked state of the vehicle. It is provided. The code signal input to the control circuit 29 is collated with the stored code by the code signal collating means, and if they match each other, the operating mode discriminating means discriminates whether to lock or unlock, and then the harness. A drive signal for locking or unlocking is sent to the door lock actuators 4a and 4b via 9a and 9b, and the door lock is locked or unlocked.

In the present embodiment, the battery 25 is used as a power source for driving the receiver 2, but a solar cell or a dry battery may be incorporated in the receiver 2 instead. In this way, it is not necessary to lay the power supply line 26, so that the receiver 2 can be retrofitted easily.

Further, in this embodiment, the controller 5
Although the above is disposed on the dashboard 8, the present invention is not limited to this and may be appropriately disposed at a suitable position where the signal from the receiver 2 can be received. For example, it may be provided on the inner panel of the door 3a on the driver's side.

Further, the control device 5 may be configured such that the receiving means including the photodiode 27 for detecting infrared rays and the conversion circuit 28 and the control circuit 29 are provided separately and are connected by a harness. At this time, this harness is desired to be short, and therefore the above-mentioned receiving means and the control circuit 29 are arranged in the vicinity. This has the advantage of increasing the degree of freedom.

Moreover, in the present embodiment, both door lock actuators 4a and 4b are operated simultaneously without discriminating the transmission position. However, each of the photodiodes 21a and 21b of the receiver 2 is door locked. The door lock actuators 4a and 4b may be individually locked / unlocked depending on the transmission position by corresponding to one of the actuators 4a and 4b. At this time, the respective reception areas are set around the driver-side door 3a and the passenger-side door 3b, respectively, and are set so as not to interfere with each other.

Moreover, in the present embodiment, the receiver 2
Although the signal is transmitted from the control device 5 to the control device 5 by infrared rays, the present invention is not particularly limited as long as the signal can be transmitted wirelessly such as ultrasonic waves and electromagnetic waves.

[0020]

As described above, according to the present invention, by replacing the signal transmission harness from the receiver to the control device with the space transmission means, it is possible to make it less susceptible to noise, and to prevent external electromagnetic waves. This is extremely effective in preventing malfunctions due to noise and increasing the reliability of the device.

In particular, if the receiver is provided at the lower edge of the rearview mirror, it becomes easy to receive an infrared signal transmitted from outside the vehicle, so that the operability of the transmitter is improved. Moreover, electric power can be obtained relatively easily from the power supply line that supplies power to the map light or the like at the root of the room mirror. In particular, if the rearview mirror has an anti-glare function and the like, and the power supply line has already been extended to the inside, the work of laying a dedicated power supply line can be omitted, which is even more convenient.

[Brief description of drawings]

FIG. 1 is a bird's-eye view showing a vehicle interior of an automobile to which a vehicle keyless door lock device constructed according to the present invention is applied.

FIG. 2 is a block diagram showing a schematic configuration of the vehicle keyless door lock device shown in FIG.

[Explanation of symbols]

 1 transmitter 2 receiver 3a / 3b door 4a / 4b door lock actuator 5 control device 6 ceiling 7 room mirror 8 dashboard 9a / 9b harness 21a / 21b photodiode 22 conversion circuit 23 drive circuit 24 light emitting diode 25 battery 26 power line 27 Photodiode 28 Conversion Circuit 29 Control Circuit

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication H04Q 9/00 311 H04Q 9/00 311U

Claims (3)

[Claims] 1. A transmitter that emits an infrared signal,
A receiver for receiving a signal emitted by the transmitter, a door lock actuator for locking and unlocking a vehicle door, and a control device for controlling the operation of the door lock actuator based on a signal from the receiver A keyless door lock device for a vehicle, wherein a signal is transmitted from the receiver to the control device via a space transmission means. 2. The keyless door lock device for a vehicle according to claim 1, wherein the space transmitting means is an infrared ray. 3. The vehicle keyless door lock device according to claim 1 or 2, wherein the receiver is provided at a lower edge portion of a rearview mirror suspended from a ceiling of a vehicle compartment. ..