JPH10140899A - Child lock system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a child lock system convenient to use. SOLUTION: A door lock controller 1 locks/unlocks all doors with the operation of a window lock switch 4b. When any door is unlocked with the operation of a door lock switch after all doors are once in a locked condition, it is detected by a lock position switch 3 to lock the door in an unlocked condition again.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a child lock system provided to prevent a child riding a vehicle from inadvertently opening a vehicle door.

[0002]

Some conventional automobiles have a child lock system. This child lock system prevents a child from operating a door lock switch or a door knob and opening a door without permission when a young child gets on the rear seat side, for example. Then, even if the door knob inside the vehicle is operated by the action of the mechanical mechanism, the door is not opened, and the door is opened only when the door knob outside the vehicle is operated.

[0003] However, the setting of the child lock system is usually set at a position where the door cannot be operated when the door is closed, for example, a portion on the door side where the door and the vehicle body face each other when the door is closed. The operation is performed by operating a dip switch provided in such as.

This is because the system is set by the action of the mechanical mechanism as described above, and the switch itself is operated by a child to prevent the system from being released. Therefore, when an adult gets into the rear seat with the system set as it is, the door can only be opened from the outside of the vehicle, which is not convenient. The present invention has been made to solve the above problems, and an object of the present invention is to provide an easy-to-use child lock system.

[0005]

According to a first aspect of the present invention, there is provided a child lock system including a door lock control device capable of electrically controlling a door lock mechanism provided in a vehicle. A child lock mode setting switch, and unlock state detecting means for detecting that the door lock mechanism is in an unlock state, wherein the child lock mode setting switch is turned on by the child lock mode setting switch. In this case, when the unlocked state detecting means detects that the door is unlocked, the unlocked door lock mechanism is locked.

According to the above configuration, by turning on the child lock mode setting switch, when the locked state of the door lock mechanism changes to the unlocked state, based on the detection output from the unlocked state detecting means. As a result, the door lock mechanism can be quickly locked by the door lock control device, whereby the door lock mechanism can be held in the locked state. Therefore, even when a child or the like in a vehicle unlocks the door lock mechanism, the door can be quickly returned to the locked state, and the door can be opened even if the door opening / closing mechanism on the inside of the vehicle is operated. You can prevent it from opening. In order to cancel such control, it is only necessary to turn off the child lock mode setting switch, so that usability is improved.

In this case, it is preferable that the child lock mode setting switch is also used as a window lock switch of the power window device (claim 2). With this configuration, the operation by the operation switch of the power window device is performed. The child lock mode can be set at the same time by turning on the window lock switch that disables the function.This improves the usability and eliminates the need to provide a separate child lock mode setting switch. Can be reduced.

The vehicle further includes impact force detecting means for detecting an impact force of a predetermined level or more acting on the vehicle. The door lock control device controls the door lock mechanism based on a detection output of the impact force detecting means. It is preferable to perform the unlock operation (claim 3).
In the event of a collision or the like, the door lock mechanism is unlocked so that the door can be opened from the outside.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a door of an automobile as a vehicle will be described below with reference to the drawings. In FIG. 1, which shows the electrical configuration of the main parts according to the present invention in functional blocks, a door lock controller (door lock control device) 1 is supplied with power from a vehicle-mounted battery (+ B) to operate a centralized door lock switch 1a. A control signal is given to the door lock actuator 2 accordingly.

The door lock actuator 2 locks or unlocks the door by electrically driving a door lock mechanism (not shown) in response to a control signal given from the door lock controller 1 to perform a lock operation or an unlock operation. It has become.

A lock position switch (unlock state detecting means) 3 detects whether the position of the door switch by the door lock actuator 2 is locked or unlocked, and sends a detection signal to the door lock controller 1. Output.

Note that these door lock actuators 2
Although only one set of the lock position switch 3 is shown, the same configuration is provided for each door such as the driver's seat side, the passenger seat side, the rear seat left side, and the rear seat right side of the automobile. When the centralized door lock switch 1a is operated, the door lock controller 1 transmits a control signal to all the door lock actuators 2 to lock or unlock all the doors collectively. ing.

The power window switch 4a and the window lock switch 4b are provided on the driver's seat side, and respectively raise and lower the windows of each door by supplying a drive signal and a lock signal to a power window actuator (not shown). Opening / closing operation is performed, or the operation of an operation switch (not shown) provided individually for each door is invalidated.
The window lock switch 4b also has a function as a child lock mode setting switch, and its on / off signal is also given to the door lock controller 1.

The acceleration sensor (impact force detecting means) 5 is used to activate an airbag device (not shown) when an impact force acting on the automobile is detected as acceleration when an automobile collision accident or the like occurs. It is provided. The detection signal of the acceleration sensor 5 is also given to the door lock controller 1.

Next, the operation of this embodiment will be described.
When the window lock switch 4b is turned on by the driver in the driver's seat after the driver and the occupant get into the automobile, the lock signal is given to the door lock controller 1. Then, the door lock controller 1 sends a control signal to the door lock actuator 2 to drive each door lock mechanism to lock each door.

In this state, the door is provided in any one of the doors to be controlled in the child lock mode, for example, the passenger seat and the right and left doors of the rear seat, for example, the left door of the rear seat. It is assumed that a mechanical door lock switch is operated and the door on the left side of the rear seat is unlocked. Then, lock position switch 3
Detects that the door has been unlocked, and outputs a detection signal to the door lock controller 1.

The door lock controller 1 gives a control signal to the door lock actuator 2 of the door on the left side of the rear seat in the unlocked state, and locks the door again. Therefore, for example, even if the child operates the door lock switch while riding to unlock the door, the door immediately returns to the locked state. That is, the purpose as a child lock system can be achieved.

In a state where all the doors are locked by operating the window lock switch 4b, or in a state where the doors are individually locked by the door lock switches of the respective doors, the vehicle having the above-described structure is subjected to, for example, a collision. Suppose you have an accident. Then, if the impact force acting on the vehicle body at that time is equal to or greater than a predetermined value, the impact force is detected by the acceleration sensor 5, and a detection signal (detection output) is also given to the door lock controller 1.
When the detection signal from the acceleration sensor 5 is given, the door lock controller 1 gives a control signal to the door lock actuators 2 of all the doors to unlock all the doors.

That is, when a collision accident occurs, for example,
The driver and the occupant of the vehicle need to escape from the vehicle promptly. Therefore, when a certain or more impact force applied to the body of the automobile due to a collision accident is detected by the acceleration sensor 5, all the doors are unlocked so that the doors can be opened from the outside.

As described above, according to the present embodiment, the door lock controller 1 locks and unlocks all doors by operating the window lock switch 4b, locks all doors once, and then locks the doors. When any of the doors on the left and right sides of the passenger seat and the rear seat is unlocked by operating the lock switch, the lock position switch 3 detects the unlock, and the unlocked door is locked again.

Therefore, for example, even if a child in a car inadvertently unlocks the door, the door can be quickly returned to the locked state, and the object as the child lock system can be realized. Become.

In addition, unlike the related art, the child lock system according to the present embodiment does not require a change in the opening and closing mechanism of the door, and utilizes an existing configuration originally provided as a centralized door lock system. Therefore, the system can be realized at low cost. Furthermore, since the system can be easily set and released collectively for all of the doors to be controlled, which could not be performed because of the mechanical operation in the past, an adult in the conventional child lock system can be easily operated. Even when the vehicle is on, the problem that the door on which the system is set can be opened only from the outside of the vehicle and the usability is not good can be solved.

Further, according to the present embodiment, the setting and release of the child lock system are simultaneously performed by locking and unlocking the function of the power window device by the window lock switch 4b. The reason why the function of the power window device is locked in this way is to prevent a child's window from being opened by a child operating the power window switch carelessly while driving the vehicle.

Therefore, the time when it is desired to lock the function of the power window device and the time when it is desired to operate the child lock system substantially coincide with each other, and it is extremely unlikely that functional inconvenience will be caused by using both functions. Therefore, it is not necessary to separately provide a dedicated child lock mode setting switch, so that the number of parts can be reduced and the usability can be further improved.

Further, according to the present embodiment, when the door is locked, the door lock controller 1
When the acceleration sensor 5 of the airbag device detects an impact force exceeding a certain level applied to the body of the automobile, all the doors are unlocked. Therefore, when a collision accident occurs, the doors can be opened from the outside. The occupant can easily escape from the vehicle.

The present invention is not limited to the embodiment described above and shown in the drawings, and the following modifications or extensions are possible. The child lock mode setting switch may be provided separately from the window lock switch 4b. The impact force detecting means may be constituted by an acceleration sensor separate from that of the airbag device, or may be incorporated in the door lock controller 1. Further, the impact force detecting means may be provided as needed. The door to be controlled in the child lock mode may be only the rear seat of the automobile. The present invention is not limited to automobiles, but can be applied to any vehicle.

[0027]

Since the present invention is as described above,
The following effects are obtained. According to the child lock system of the first aspect, when the child lock mode setting switch is turned on, the door lock control device determines that the unlock state detection means has set the door lock mechanism to the unlock state. When it is detected, the unlocked door lock mechanism is locked, so that the child lock function can be realized at low cost using the existing configuration, and the usability can be improved.

According to the child lock system of the present invention, the child lock mode setting switch is also used as the window lock switch of the power window device, so that the usability can be further improved.

According to the child lock system of the third aspect, the door lock control device unlocks the door lock mechanism based on the detection output of the impact force detecting means. It is possible to open the door.

[Brief description of the drawings]

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

[Explanation of symbols]

1 is a door lock controller (door lock control device),
Reference numeral 3 denotes a lock position switch (unlock state detecting means), 4b denotes a window lock switch (child lock mode setting switch), and 5 denotes an acceleration sensor (impact force detecting means).

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Hiromitsu Mizuno 1 Noda, Toyoda Rika Electric Machinery Co., Ltd., Oguchi-machi, Niwa-gun, Aichi Prefecture (72) Inventor Jun Jun Miura 5-33-8 Shiba, Minato-ku, Tokyo No. Mitsubishi Motors Corporation

Claims (3)

[Claims] 1. A vehicle comprising a door lock control device capable of electrically controlling a door lock mechanism provided in a vehicle, wherein a child lock mode setting switch and the door lock mechanism are unlocked. The door lock control device detects that the unlock state detecting means is in the unlock state when the child lock mode setting switch is turned on. Then, the child lock system is configured to lock the door lock mechanism in the unlocked state. 2. The child lock system according to claim 1, wherein the child lock mode setting switch is also used as a window lock switch of a power window device. 3. The door lock control device according to claim 2, further comprising: an impact force detecting unit configured to detect an impact force of a predetermined level or more acting on the vehicle, wherein the door lock control device controls the door lock mechanism based on a detection output of the impact force detection unit. The child lock system according to claim 1, wherein the child lock system is configured to perform an unlock operation.