JPS61155579A - Key trapping preventing 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 [Field of Industrial Application] The present invention provides a mechanical keyless opening by placing the inner door and knob of a car in the locked position and closing the door by pulling up the outside handle. The present invention relates to a key locking prevention device that prevents an ignition key from being locked inside a vehicle, in a door locking device that can lock the ignition key inside the vehicle.

Automobiles are generally equipped with door locking devices that include a keyless locking mechanism. Although the door lock device can be locked by pressing the opening of the door and closing the door without using a key, a key is always required to unlock the door. Therefore, due to the convenience of the door lock, an unexpected situation often occurs where the key is left inserted in the ignition key cylinder and the door is locked, trapping the key inside the car.

[Prior Art] Conventional key locking prevention devices that solve this kind of problem are disclosed in Japanese Utility Model Application Publication No. 52-144986 and Japanese Utility Model Publication No. 51-45.
As seen in Publication No. 797, etc., this is based on the premise that if you forget to remove the key from the ignition key cylinder and lock it in for 17 months, if you operate the keyless lock with the key still inserted. This prevents the key from being locked up.

[The problem that the invention solves]

However, locking the key inside the car (for 2 hours)
In addition to forgetting to remove the key, there are also cases where the user forgets to turn on the key in the car, or fails to put the key in the car's pocket and leaves it behind. In such cases, conventional devices that operate on the premise that the key is inserted into the seventh ring have a problem in that they cannot prevent the key from being trapped.

[Means for solving problems]

The present invention solves the above problems and makes it possible to prevent the key from being locked inside the car, not only when you forget to remove the key, but also when you leave the removed key in the car. The key locking prevention device is to set the inner lock knob to the locked position,
Close the door while pulling up the outside handle.In a door lock device that can perform keyless locking, ICj detects that the door has been closed.
1Ih1 detection means, a second detection means for detecting that the outside handle is pulled up, a third detection means for detecting that the inner lock knob is in the locked state, and the first to third detection means. a discriminating means for taking a logical product of the detection results by the means; a memory means for storing the discriminating result by the nuclear discriminating means; a timer means for starting time counting in accordance with a discriminating result by the discriminating means; and a memory content of the memory means. The key locking prevention device is provided with an actuator that unlocks a locked door in response to the third detection means (and a second detection by the third detection means) while the timer means is measuring time.

[For production]

The key containment prevention device according to the present invention starts the timer means when it learns that the door is once keyless locked based on the detection results by the first to third detection means, and then activates the timer means when the third detection is performed while the vagina timer means is in operation. The actuator is actuated in response to the detection by the means, that is, the pull-up of the out-sight knob to unlock the keyless locked door.

In other words, even if a keyless lock is applied once, the door can be unlocked by pulling up the outside door handle again within a certain period of time and the key left inside the vehicle can be retrieved, thereby preventing the key from being locked up. is possible.

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a door switch serving as a first detection means for detecting that the door of the automobile is closed, and is closed when the door is opened. Reference numeral 2 designates a door switch as a second detection means for detecting that the outside door handle of the door is pulled up, and is closed by pulling up the door outsite door handle. 3, the inner lock knob is the opening 1. A lock switch serves as a third detection means for detecting that the lock knob is in the locked state, and is closed when the lock knob is in the locked state. 4 is a power source that can be used with the battery installed in the car.

10. According to the states of door switch 1, handle switch 2, and unlock switch 3, door switch 1 detects door closing, handle switch 0 and 2 detect handle pull-up, and unlock switch 3 detects door closing.
This is a first discrimination circuit that performs a logical product of lock detection of the knob and outputs a discrimination signal.

11 stores the discrimination signal which is the AND output of the discrimination circuit 10; This is a memory circuit that holds data. Reference numeral 12 denotes a timer circuit which is activated and measures a certain period of time when the handlebar switch 2 is opened when the handlebar switch 2 is opened after the discriminator circuit 10 outputs the discrimination signal. 13 is timer circuit 1
2, the second discrimination circuit detects that the handle is pulled up again and the handle switch 2 is closed while counting a certain period of time. Reference numeral 14 denotes a discrimination circuit of wc3 that detects that the hand has been released from the handle that has been pulled up again. A drive circuit drives the unlock actuator 16 based on the output of the 15th third discrimination circuit 14, and 17 is a buzzer that is activated while the timer circuit 12 is counting time.

In the above, when the inner lock knob is pressed down and the door handle is pulled up to close the door, door switch 1 changes from closed to open, and handle switch 2
changes from open to closed, B, Kusui 9chi 3 changes from open to closed, and this causes the door to close, the handle to pull up, and the mouth to open.
The depression of the knob is simultaneously detected, and based on this rL, the first discrimination circuit 10 sends a discrimination signal to its output. This discrimination signal is stored in the storage circuit 11. That is, the memory circuit 11 stores that the keyless lock has been completed.

At the end of this keyless lock operation, when the user releases the handle, the timer circuit 12 is triggered and starts counting time, and the buzzer 1T is activated. The buzzer 17 is used to prompt the driver to check whether the keyless-locked driver key has been left in the vehicle and locked away. If the key is locked after this confirmation, the driver can use the keyless port.

A previously locked door can be unlocked by pulling up the handle of the door again (11) and then releasing the handle.

That is, if the handle is pulled up again while the buzzer is sounding, the second discrimination circuit 13 detects that the handle has been pulled up again by the output of the timer circuit 12 and the closing of the handle switch 2. Detection that the hand has been removed from the handle for 1 hour is determined by the output of the memory circuit 11, the output of the second discrimination circuit 13, and the handle switch 2.
The third discrimination circuit 14 performs this in response to the opening of . A signal is sent from the third discrimination circuit 14 to the drive circuit 15 in accordance with this.
The drive circuit 15 operates the unlock actuator 16 based on this signal, and drives the inner lock knob, which has been in the locked state, to the unlocked position. For this reason,
The door can now be opened freely, and it is now possible to retrieve the key locked inside the car and lock the door again without a key.

The time measured by the timer circuit 12 must be the time necessary to unlock the door after realizing that the key is locked, but if it is made too long, the driver may leave the vehicle. Immediately after this, a third party will be able to freely open the door, so be careful.

FIG. 2 is an electrical circuit diagram showing a more specific example of the device shown in the block diagram in FIG. ! The first input of L is connected to the other end of the lock switch 3 whose one end is grounded via an inverter 10b, and the second input is connected to the other end of the door switch 1 whose one end is grounded by a differential circuit 100. The third input has one end grounded and is connected to the other end of the power switch 3 via an inverter IQd.

In addition, the other ends of switches 1 to 3 are pull-up resistors R, .
It is connected to ten power supplies via R,,R,.

As described above, when the inner lock knob is pressed down and the handle of an open door is pulled up, the door switch 1 closes and the handle is turned.

Chi 2 is closed, and the mouth, kusui, and Chi 3 are closed,
The first to third inputs of the AND circuit 10& are H,
They are at L and H levels, and the output of the AND circuit 101L is at L level. When the door is closed in this state, the door switch 1 changes from closed to open, and in response, a differential pulse of the differential circuit 100KH level is generated, which is outputted through the AND circuit 101L.

The memory circuit 11 is set by the rise of the set input S from L to H level, and its Q output changes from L to H level, and is reset in the set state.

R-S flip-flop 1. is reset by the rise of the Q input R to the L or kHz level, and its Q output changes from the H level to the L level. The set consists of 111L
(In this case, the output of the above-mentioned AND circuit is connected, and the other end of the c1 ivy switch 3 is connected to the reset input H.

As a result of the above, the flip 70 knob 112L receives the differential pulse sent to the output of the AND circuit 101L at its reset input.

When human power is applied, it enters a set state and its Q output rises from L to H level.

The timer circuit 12 has a one-shot multivibrator 12ak that generates an H-level pulse that lasts for a certain period of time in response to the rise of the trigger input TOL to the H-level. Manually, the Q output of the flip-flop 11 & is connected to the other input of the handle switch 2, and the output of the AND circuit 12b connected to it is disconnected.

As a result of the above, when the timer circuit 12 & pulls up the handle with the lock knob pressed down (at the end of the keyless lock operation to close the door while holding down) and releases the handle, the power of both the AND circuit 12b becomes H level. It is triggered by the sum of its output rising to L, f-, and H levels, and its output rises from L to H level.

The second discrimination circuit 13 inputs -10,000 to the timer times #) 12
Onesie 1. The output of the multivibrator 12 & is connected to the AND circuit 131L to which the outputs of the inverter 1G (1 are connected respectively) to the other input, and the set input S
The output of the K AND circuit 131L is connected to the reset input H,
It has an R-3 fly, a bush 13b, and a bush 13b to which the other ends of the bush 3 and the bush 3 are respectively connected. When the handle is pulled up again and the handle switch 2 is turned on while the timer circuit 12 is counting time, the output of the AND circuit 13& goes from L to H level, and the output of the AND circuit 13& is 13b.
is set, and the Q output of the R-S FRI, PUFRO, and PUFRO 13b goes from L to H level. By setting the flip-flop 13b, it is determined that the handle has been pulled up again.

The third discrimination circuit 14 is not connected to an AND circuit 14 &, and the first input of the AND circuit 14 & is a flip-flop, a block 11
The Q output of & is the flip 70 knob 13b for the second input.
Q output of , and the third input is handle switch 2.
The other ends of each are connected. From the above 9, the first to third inputs of the AND circuit 14& are iH, L, respectively when the door is closed with the handle pulled up.
It is at the L level, and in this state, let go of the handle (when it reaches 7, the level becomes ■, L, and H, respectively.

Then when the handle is pulled up again, flip 7
Since the 0 knob 1.3b is set, the AND circuit 141
The first to third manpower of L are H and H, respectively.

Become L level. If you let go of the handle in this state,
All inputs of the AND circuit 14a become H level,
The output rises from L to H level and is pulled up again...it is determined that the $7 has been released.

The drive circuit 15 has an NPN transistor 15& in which the output of the AND circuit 14& is connected to the pace, and the emitter of the transistor 151L is connected to the ground, and the collector is connected to the power supply via the coil of the relay 15b. The contacts of the relay 15b that constitute the normally open switch constitute the actuator 16 (the negative end is connected to the solenoid 16 and the other end is connected to the power supply. When the output of the circuit 14& rises from L to H level, the transistor 15& turns on, and in response, current flows through the coil of the relay 15b, closing its contacts and activating the solenoid 16a, which is an actuator.Solenoid 16& Its operation drives the door and knob in the unlock direction, unlocking the door that was once locked when the key was forgotten inside the car.

The buzzer 1T is activated to emit a warning sound to the driver when the output of the one-shot multivibrator 12&, which constitutes the timer circuit 12, is at H level.

By the way, when the handle is pulled up again, timer circuit 1
2, the second discrimination circuit 1
The output of AND circuit 13& of 3 does not become H level,
Since the unlock 13b is never set, the door once locked will never be unlocked.

In the above-mentioned embodiment 1, the apparatus is constructed only by hardware. However, the functions of the discrimination circuit and the storage circuit may be performed by a microcomputer, so-called CPH, which operates according to a predetermined program.

〔Effect of the invention〕

As described above, the present invention starts the timer circuit in response to keyless locking, and operates the actuator by pulling up the handle again while the timer circuit is counting time. However, the lock knob can be driven from the locked state to the unlocked state, so even after keyless locking, if you realize that you have left the key inside the car within a certain period of time, you can open the door even without the key. You can unlock it and take out the key.
This can prevent the key from being locked inside the car.

In addition, even if the door is locked ajar with a normal keyless lock, you can open the door without a key by pushing the door in once and then pulling and pulling the handle again in the same way as described above. This eliminates the hassle of resetting the keyless lock after opening the door.

In particular, if a buzzer is installed that operates while the timer circuit is counting time, the buzzer will sound every time the keyless lock is operated, which will alert the driver to check whether the key is locked inside the vehicle. This makes it possible to more reliably prevent key containment.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an apparatus according to the present invention, and FIG. 2 is an electric circuit diagram showing a specific example of the configuration within the blocks in FIG. 1...Door switch, 2...Handle switch, 3
...Lock switch, 10...First discrimination circuit, 1
1... Memory circuit, 12... Timer circuit, 13...
Second discrimination circuit, 14...Third discrimination circuit, 16...
- Actuator.

Claims (2)

[Claims] (1) In a door lock device that can perform keyless locking by placing the inner lock knob in the locked position and closing the door with the outside handle pulled up, a first detection means for detecting that the door is closed; a second detection means for detecting that the outside handle is pulled up; a third detection means for detecting that the inner lock knob is in the locked state; and logic of the detection results by the first to third detection means. a discriminating means for taking a product, a memory means for storing the discrimination result by the discriminating means, a timer means for starting time counting according to the discriminating result by the discriminating means, and a timer means for starting time measurement according to the discrimination result by the discriminating means, and the storage contents of the memory means and the time counting by the timer means. and an actuator that unlocks a locked door in response to a second detection by the third detection means. (2) In a door lock device that can perform keyless locking by using the inner lock knob as a locking device and closing the door while pulling up the outside handle, a first detection means for detecting that the door is closed; a second detection means for detecting that the outside handle is pulled up; a third detection means for detecting that the inner lock knob is in the locked state; and logic of the detection results by the first to third detection means. a discriminating means for taking a product, a memory means for storing the discrimination result by the discriminating means, a timer means for starting time counting according to the discriminating result by the discriminating means, and a timer means for starting time measurement according to the discrimination result by the discriminating means, and the storage contents of the memory means and the time counting by the timer means. A key seal comprising: an actuator that unlocks a locked door in response to a second detection by the third detection means; and a buzzer means that is activated while the timer means is counting time. Crowding prevention device.