JPS6314972A - Key pull-out forgetting alarm apparatus - 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 [Industrial Application Field] The present invention relates to an improvement in a key removal alarm device for a door lock device equipped with a keyless lock mechanism for a vehicle.

[Prior Art] Generally, a door lock device equipped with a keyless lock mechanism has the advantage that the door can be automatically locked without using a key due to the operation of the keyless lock mechanism, but on the other hand, the ignition key cylinder of the vehicle There is a risk of accidentally locking the door with the key inserted.

A conventional example of a key removal warning device for solving this type of problem will be described with reference to FIG. 3rd (21st
The forget-to-remove-the-key alarm device shown in the figure is a key switch l that closes when the key is inserted into the ignition key cylinder.
, a knob switch 2 that closes when the locking knob of the door lock device is in the locked position, a door switch 3 that closes when the door is opened, a power source 4 and an electric alarm bag 2! In series with t5! [It is structured as follows. That is,
If the door is opened without the key removed and an attempt is made to lock the door, the electric alarm device 5 is activated to close the key switch 1, knob switch 2, door switch 3, etc. (See Utility Model Application No. 56-133058!) Another example of the conventional key removal warning device is
From the above-mentioned conventional example, either the knob switch 2 that closes when the locking knob of the door lock device is in the locked position is omitted, or a detection means for detecting the OFF state of the ignition circuit is added. In these cases, if you open the door without removing the key, the alarm will be activated.

[The problems that this invention attempts to solve, however,
In such a conventional key removal alarm device,
In the case of 7rlj Nagisa, when the outside door handle was pulled up, the knob was placed in the lock position, and the door was quickly closed, the door started immediately even after receiving an alarm from the alarm system after the knob was activated. There was a problem in that the door closing operation could not be stopped, resulting in the key being stuck inside the vehicle. In addition, in the latter case, the alarm will be activated when you open the door and step out of the car with the key inserted in the key cylinder, which is extremely noisy.
In addition, there is a risk that the alarm may be ignored if the key is truly forgotten, and the device lacks reliability as a key-removal alarm device.

[Means for Solving the Problems] The present invention was made with the aim of solving these conventional problems and reliably preventing forgetting to remove the key. a key switch that detects insertion, a door switch that detects opening/closing of the door, a handle switch that detects operation of an out-site handle of the door, a knob switch that detects operation of a door lock knob; and an alarm device that issues an alarm for forgetting to remove the key when the key switch detects that the key has been inserted and the door is opened and the knob is operated, or when the door is opened and the outside handle is operated. It is something.

[Example] Embodiments of the present invention will be described below based on the drawings.

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

First, to explain the configuration, (lO) is the key switch that closes when a key is inserted into the ignition key cylinder, (11) is the door switch that closes when the door is opened, and (12) is the outside handle of the door. When the keyless lock is in the locked position, the handle switch closes,
(13) is a knob switch that closes when the door lock knob is placed in the locked position, and (14) is an alarm device consisting of a lamp, a buzzer, or both to warn if the key has been forgotten. Each of the switches (10 to 13) and the warning device W (14) are used as a keyless lock warning device H (15
). In addition, a key switch (10),
The door switch (11) and the knob switch (13) are connected in series to the power source (16) and the alarm device (14), and the handle switch (12) is connected to the knob switch (13).
) are connected in one row.

Next, the operation will be explained with reference to the flowchart shown in FIG.

When you open the door without removing the key and set the lock knob to the lock position l, in other words, when the second (21) flowchart is used, in step Sl, the key switch (10)
is on, the door switch (11) is on in step S2,
Then, after waiting one second in S3 and turning on the knob switch (13) in S4, the alarm device (16) is activated in S5. The warning device 21 (14) issues a warning to the driver using, for example, light, sound, or both. As a result, the driver can reliably detect when the driver has forgotten to remove the key.
There is no need to worry about leaving the vehicle without locking the doors.

Next, if you open the door without removing the key and operate the outsight handle before the lock knob, that is, step Sl
ignition switch (lO) is turned on, step S2
Turn on the door switch (l l), wait 1 second at S3,
When the handle switch (12) changes from OFF to ON in S6, the alarm device (14) activates the S5 switch when the outside handle is operated without waiting for the lock knob to operate.
to issue an alarm.

In this case, the driver would be notified of the fact that he forgot to remove the key before closing the door, so there is no risk of him locking the key. As a result, forgetting to remove the key due to the keyless lock can be reliably prevented, and theft accidents caused by forgetting to remove the key can be avoided. In addition,
As for the alarm method, when operating the outside handle, you can stop the alarm if you take your hand off the handle, or you can make it hold even if you take your hand off and continue the alarm until you remove the key. Also good.

C. Effects of the Invention As described above, according to the present invention, when the ignition key switch, door switch, and knob switch are each closed, or when the ignition key switch and the door switch are closed and the handle switch is closed, the handle switch is closed. Since the system is designed to issue an alarm each time the door is closed, the driver can be sure to know that he or she has forgotten to remove the real key, and there is no fear that the key will be locked inside the vehicle.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an embodiment of the present invention, UA 2 is a flowchart for explaining the operation, and FIG. 3 is a circuit diagram of a conventional key removal warning device. (lO)...Key switch, (l l)...Door switch, (12)...Handle switch, (13)...Knob switch, (14)...Alarm' Am. Patent Applicant: Nissan Motor Co., Ltd. Beniyo, O, 1'C1, --J Figure 1 Figure 2

Claims (1)

[Claims] A key switch that detects that a key is inserted into the ignition key cylinder, a door switch that detects when the door is opened and closed, a handle switch that detects the operation of the outside handle of the door, and a handle switch that detects the operation of the door lock knob. A knob switch that detects the insertion of the key, and a key removal alarm when the door is opened and the knob is operated, or the door is opened and the outside handle is operated when the key is detected by the key switch. What is claimed is: 1. A forget-to-remove key alarm device, comprising: an alarm device that emits an alarm.