JPS63251581A - Keyless entry device for automobile - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Summary] The present invention provides a function on the automobile side to automatically lock the door when the door remains unlocked for a certain period of time, and also sends an unlock instruction from the keyless entry transmitter. The purpose is to simplify operations and improve the anti-theft effect.

[Industrial application field]

The present invention relates to a keyless entry device for automobiles that can control door locking and unlocking without using a door key.

[Conventional technology]

In vehicles such as delivery vehicles and cash transport vehicles, where the doors are frequently locked/unlocked and where anti-theft measures are important, it is inconvenient to use the door key to lock/unlock each time. There is also the worry that forgetting to lock the door could lead to theft.

Keyless entry devices for automobiles were developed in light of this kind of situation, and generally a receiver is installed on the vehicle side, and the driver carries a transmitter that can transmit weak radio waves, infrared waves, or ultrasonic waves, etc. This allows locking and unlocking to be controlled remotely from the outside. Specifically, (1) the transmitter is equipped with a dedicated button for locking and unlocking the door, and the driver can control the locking/unlocking of the door by pressing the desired button without using the door key; 2) 1 for the transmitter
There are only three buttons, and each time the driver presses one of the three buttons, the door locks and unlocks are reversed.

[Problem that the invention seeks to solve]

However, since the method (1) requires two buttons, the cost is high and there is a possibility of erroneous operation. (2
) method reverses the previous state of the door (locked or unlocked), so if you forget that state or operate it remotely from a position where you can't see it, you may be concerned about the operation results. There is a risk of theft especially if the device is left unlocked.

This can also occur due to an operational error in method (11), and (L) If you forget the operation itself in method 21, there is a possibility that the device will remain in the unlocked state.

The present invention solves the above-mentioned problems by disabling the transmitter from issuing unlock instructions, and by controlling the receiver to automatically enter the lock state if the unlock state continues for a certain period of time or more. This is what we are trying to solve.

Means for Solving Problem c] The present invention provides a remote control transmitter (1) carried outside the vehicle with an operation button (13) that can only issue an instruction to unlock the door, and a remote control transmitter (1) that is installed on the side of the vehicle. The receiver (2) provided with the door has a control function that unlocks the door upon receiving an unlock instruction, and automatically locks the door when the unlocked state continues for a certain period of time. It is characterized by:

[Effect]

Car doors are normally locked/unlocked from inside the car by raising and lowering the zircon knob with your fingertips, and from outside the car by inserting the door key into the key cylinder and rotating it, but this is where electric locking/unlocking works. With the addition of a locking mechanism, it becomes possible to control locking/unlocking by operating a switch. However, this switch operation is done inside the car, and the keyless entry device is one that is taken outside the car. Therefore, in a car incorporating a keyless entry device, locking/unlocking of the doors can be controlled in a number of ways.

This may seem convenient, but if the top priority is to securely lock the door, it would be more convenient to treat unlocking as an exception. Therefore, the receiver of the present invention has a function to automatically change to the locked state without receiving a locking instruction if the unlocked state continues for a certain period of time (for example, 5 seconds) or more. This does not mean that it does not respond to lock or unlock instructions. This means not leaving the door unlocked or closed for long periods of time.

A transmitter paired with a receiver having the above-mentioned functions does not need a function of issuing a lock instruction.

This is useful in unifying the operation button, and since the button only has the function of instructing the user to open and click, there is no possibility of operating errors. Considering actual operation, when the driver unlocks the door from inside the car and gets out of the car, it will automatically lock after a certain period of time, so there is no need to do anything with the door lock (which is also a good thing). And when you enter the car, you simply press the button on the transmitter (without checking the type of button) to unlock it, making it easy to operate.

〔Example〕

Figure 1 is a configuration diagram showing an embodiment of the present invention, in which 1 is a portable transmitter, 2 is a transmitter with a function of receiving and verifying a special code from 1, and locking/unlocking the door. 3 is the actuator of the electric door lock/unlock mechanism (for example, a door lock solenoid); 4 is the computer that controls this actuator (called a door control relay); 5 is the manual door control Lock/unlock SW inside the vehicle that gives lock/unlock instructions to relay 4 (SW is an abbreviation for switch), 6
is the receiving antenna of code receiver 2, and 7 is this antenna 6.
9 is the battery, 10 is the main 5W 111 is the courtesy SW (originally for controlling the interior lights) that detects the open/closed state of the door, and 12 is the door lock/unlock state. The SW 13, which detects from the top and bottom positions of the zircon knob, is the only operation button provided on the transmitter 1, and is pressed when issuing an unlock instruction.

Code receiver R2 has a built-in microcomputer and is the second
Process the diagram. This process starts by waiting for a code from the transmitter 1, and when the received code matches the stored code ("sent"=Y), an unlock output is issued. At the same time, start a timer and output a lock output after 5 seconds. At this time, the open/closed state of the door is determined from the state of the door courtesy switch, and if the door is open, a door open flag is set and a door ajar alarm is issued. This is because there is no anti-theft effect if the door is locked but left ajar, or if the door is left open. If the door closes in this alarm output state, the alarm will be stopped and the lock output will be issued again. This is because many mechanisms unlock when the door is closed, and remain unlocked unless the door is locked again. Note that if the door is closed when the first lock is output, the door open flag is not set and the process returns to the start.

On the other hand, when the code from transmitter 1 is not received,
When unlock is detected by 5W12 in "Transmission Yes"-N), the timer is started from that point. Such a case occurs when the door key or silicone knob is manually operated, or when the lock/unlock SW 5 is operated.

If a door open is detected in this state and the door open flag is set (case where the door is opened after unlocking),
Or, if door closing is detected and there is no flag (case where the door has not been opened even once after unlocking),
A lock output is output 5 seconds after the timer starts. On the other hand, if a closed door is detected but there is also a door open flag (
In cases where the door is opened and then closed), a lock output is immediately output. Note that a timer may be inserted between this portion and the above-mentioned lock output after the alarm stops, as shown by the dotted line circle, to provide a certain period of time (one second or less may be sufficient).

In this way, the order in which the doors are closed and then locked is certain, allowing for mechanical delays.

〔Effect of the invention〕

As described above, according to the present invention, in a keyless entry system for an automobile, it is possible to reliably prevent forgetting to lock a door, and it is also possible to simplify the configuration and operation of the transmission button.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a flow chart showing the operation of FIG. Applicant: Fujitsu Ten Co., Ltd. Applicant: Shatai Kogyo Co., Ltd., Patent Attorney Toshimoto Aoyagi, Yomei's Real Snake Example L Ho T Lecture FN, Figure 1

Claims (1)

[Claims] A remote control transmitter (1) carried outside the vehicle is provided with an operation button (13) that can only be used to instruct door unlocking, and a receiver (2) installed on the side of the vehicle receives unlocking instructions. A keyless entry device for a motor vehicle, characterized in that the door is unlocked and has a control function that automatically locks the door when the unlocked state continues for a certain period of time.