JPH073135B2 - Electronically controlled door lock device for automobile - Google Patents

Description

Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to an electronically controlled door lock device for unlocking / locking a door lock mechanism of an automobile by an actuator controlled by an electric signal, and more particularly to an engine key The present invention relates to a configuration for preventing a door from being locked while being attached.

[Technical Background of the Invention and Problems Thereof] Electronically controlled door lock devices for automobiles are generally referred to as a centralized door lock device or a vehicle speed sensitive centralized door lock device and are put to practical use. In this type of device, an electromagnetic or pneumatic actuator is attached to the door lock mechanism, and the door lock mechanism can be unlocked / locked by controlling the actuator with an electric signal.

In this type of electronically controlled door lock device, the fact that unlocking / locking can be controlled by an electric signal is utilized, and a structure for preventing all the doors from being locked with the engine key attached is invented. (For example, the actual public Sho 56-
No. 7646).

FIG. 2 shows the construction of a conventional electronically controlled door lock device including a mechanism for preventing the engine key from being removed. Second
In the figure, reference numeral 10 denotes an electromagnetic rotary actuator for unlocking / locking the lock mechanism, which will be described as unlocking / locking drive of the lock mechanism for all doors. The actuator 10 is connected to a power supply via two relays 12a and 12b, and these relays 12a and 12b are driven by transistors 16a and 16b which respond to the outputs of the timer circuits 14a and 14b, respectively.

The timer circuits 14a and 14b are triggered when their inputs change to the H level, and drive the relays 12a and 12b for a set fixed time. When the relay 12a is driven, a current flows in the direction of arrow A in the actuator 12, and the lock mechanism is locked. When the relay 12b is driven, a current flows in the arrow B direction in the actuator 10, and the lock mechanism is unlocked.

Reference numeral 18 denotes a lock switch for manual operation, and when the switch 18 is switched to the lock side, the timer circuit 14a is triggered and the actuator 10 is locked and driven as described above. On the contrary, when the switch 18 is switched to the unlocking side, the timer circuit 14b is triggered via the OR gate G1 and the actuator 10 is unlocked.

20 is an engine key switch that detects the state where the engine key is attached to the vehicle, and it turns on when the engine key is attached,
It is turned off when not attached. 22 is a lock state detection switch for detecting the state of the door lock mechanism, which is turned off in the unlocked state,
It is turned on in the locked state. A door switch 24 detects the open / closed state of the door and is turned on in the open state and turned off in the closed state.
The status signals of these three switches are input to the OR gate G1 via the AND gate G2.

In other words, if you try to lock the door by mistake while the engine key is still attached to the vehicle, the lock knob inside the door will be locked when the engine key switch 20 is on and the door switch 24 is on (the door is open). When set to the position, the lock state detection switch 22 is turned on, the input conditions of the AND gate G2 are complete, and the output becomes H level,
This is input to the timer circuit 14b via the OR gate G1. At this time, the actuator 10 is unlocked so that the door cannot be locked even if the door is closed and locked. This prevents you from forgetting to remove the engine key.

However, in the above-mentioned conventional device, the following problems have occurred due to the structure of the door lock mechanism. The same applies to a simple mechanical door locking device as well as an electronically controlled locking device, but the locking mechanism cannot be activated when the outside handle of the door is pulled. This is because the lock mechanism and the door outside handle are mechanically connected.

Therefore, as described above, when the timing when the output of the AND gate G2 becomes the H level and the actuator 10 is locked and driven and the timing when the person outside the vehicle pulls the door outside handle, the actuator 10 operates. However, the lock mechanism does not operate and is kept locked. If this happens, the door will be locked without forgetting to remove the engine key.

[Object of the Invention] The present invention has been made in view of the above-mentioned problems of the related art, and an object thereof is to provide an electronically controlled door lock device for a vehicle, which can surely prevent forgetting to remove an engine key. It is in.

[Summary of the Invention] In order to achieve the above object, the present invention has an outside handle of a door and an actuator for locking and unlocking a door lock, and in a state where the outside handle is pulled, It is impossible to lock and unlock the door lock by the actuator, and in a state where the outside handle is not pulled,
An electronically controlled door lock device for an automobile, comprising a door lock mechanism capable of locking and unlocking a door lock by the actuator, a door switch for detecting an open state of a door, and a lock for detecting a locked state of the door lock. A state detection switch, an engine key switch that detects whether an engine key is attached to the vehicle, an outside handle switch that detects whether the outside handle is in a pulled state, and a door switch for the door A storage circuit that detects the open state, detects that the door lock is locked by the locking state detection switch, and stores the state that the engine key is mounted on the vehicle by the engine key switch. In addition to the state stored by this storage circuit, When the state where the outside handle is not pulled by the side handle switch is detected, unlock command output means for outputting the unlock command for unlocking the door to the actuator, and the unlock command output means by this unlock command output means An actuator drive circuit that drives the actuator so as to unlock the door lock, and a reset circuit that resets the storage state of the storage circuit based on the drive command. Is characterized by.

[Embodiment of the Invention] FIG. 1 shows the configuration of an electronically controlled door lock device for an automobile according to an embodiment of the present invention.

The same parts as those in the conventional apparatus shown in FIG. 2 are designated by the same reference numerals, and the description of the configuration and operation of the same parts is omitted.

In the apparatus of the present invention shown in FIG. 1, the AND gate G2
The D-type flip-flop 28 to which the output signal of is input is provided, and the output terminal Q of this flip-flop is input to the new AND gate G3 and the timer circuit 16 is connected to the terminal C.
The output signal of b is input. The other input terminal of the AND gate G3 is connected to the door outside handle switch 26. The switch 26 is turned off when the door outside handle is pulled, and is turned on in a normal state where the door outside handle is not pulled.

As shown in the conventional example, the engine key switch 20 is turned on, the door switch 24 is turned on (door is opened), and the lock state detection switch 22 is turned on (locked state) when the door is locked without forgetting to remove the engine key. Then, the AND gate G2 outputs an H level signal. Here, the flip-flop 28 outputs this state H from the output terminal Q.
Therefore, at that time, if the door outside handle is not pulled and the switch 26 is on, the output of the AND gate G3 becomes H level, the timer circuit 14b operates, and the lock mechanism is unlocked. When the lock mechanism is driven, the drive signal of the timer circuit 14b is input to the terminal C of the flip-flop 28, so the flip-flop 28 is reset.

Even if the lock mechanism is locked again in this state, the AND gate G2 still outputs the H level signal, and the AND gate G outputs the H level signal. Will be unlocked.

Next, it is assumed that the door outside handle is pulled and the level signal is output from the AND gate G3 while the H level signal is output from the output terminal Q of the flip-flop 28. In this state, the driver tries to close the door while pulling the door outside handle in order to contain the key. In this state, lock unlocking drive is not performed. However, if the driver closes the door and releases the door outside handle, the switch 26 is turned on and the flip-flop 28 also remembers the previous state, so that the AND gate G3 outputs an H level signal. It outputs and the timer circuit 14b operates to unlock the lock mechanism. Then, the lock / unlock drive signal is fed back to the terminal C of the flip-flop 28 to reset the flip-flop 28.

As described above, in the door lock device according to the present embodiment, the lock mechanism can be unlocked before and after the key-closing operation in a state where the door outside handle is not pulled, and it is possible to reliably forget to remove the engine key. Can be prevented.

As described above, according to the present invention, the door switch detects the door open state, the lock state detection switch detects the door lock state, and the engine key switch attaches the engine key to the vehicle. It is detected whether or not the outside handle is pulled by the outside handle switch.
In the memory circuit, the door switch detects the open state of the door, and the lock state detection switch detects that the door lock is locked, and the engine key switch attaches the engine key to the vehicle. After storing the state that the outside handle is detected, the unlock command output means detects the state in which the outside handle is not pulled by the outside handle switch in addition to the state stored by the storage circuit. An unlock command for unlocking the door can be output to the actuator. Further, when the unlock command is output from the unlock command output means, the actuator driving means drives the actuator so as to unlock the door lock. At the same time, the reset circuit resets the storage circuit based on the drive command. Therefore, according to the present invention, when the engine key is attached to the vehicle, the door is opened by pulling the outside handle of the door to confirm the locking of the door from outside the vehicle. It is possible to reliably prevent forgetting to remove.

[Brief description of drawings]

FIG. 1 is a circuit diagram of an apparatus according to an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional apparatus. 10 …… Actuator 20 …… Engine key switch 22 …… Lock state detection switch 24 …… Door switch 26 …… Door outside handle switch

Claims (1)

[Claims] 1. An outside handle of a door and an actuator for locking / unlocking a door lock, wherein when the outside handle is pulled, locking / unlocking of the door lock by the actuator is disabled. , When the outside handle is not pulled,
An electronically controlled door lock device for an automobile, comprising a door lock mechanism capable of locking and unlocking a door lock by the actuator, a door switch for detecting an open state of a door, and a lock for detecting a locked state of the door lock. A state detection switch, an engine key switch that detects whether or not an engine key is attached to the vehicle, an outside handle switch that detects whether or not the outside handle is pulled, and a door switch for the door A storage circuit that detects the open state, detects that the door lock is locked by the locking state detection switch, and stores the state that the engine key is mounted on the vehicle by the engine key switch. In addition to the state stored by this storage circuit, When a state where the outside handle is not pulled by the side handle switch is detected, unlock command output means for outputting the unlock command for unlocking the door to the actuator, and unlock command output means by this unlock command output means An actuator drive circuit that drives the actuator so as to unlock the door lock, and a reset circuit that resets the storage state of the storage circuit based on the drive command. An electronically controlled door lock device for automobiles.