JPH04136384A - Door lock device for vehicle - Google Patents

Abstract

PURPOSE:To unlock only required doors and also prevent a vehicle from being stolen by providing means for detecting rotation of a key to the unlock side and a timer for measuring the time during which the key is held in its unlock side rotating position. CONSTITUTION:The door lock key cylinder 1 of the door of a driver's seat is provided with a keyless switch and a detecting means for detecting rotation of a key to the unlock side. The key is inserted into the key cylinder 1 and rotated to the unlock side and then the detecting means detects rotation of the key and a timer 2 starts to operate. Next the key is held in its unlock side rotating position and after a predetermined time elapses the key is returned to its neutral position and then the timer 2 unlocks all the doors. If the key is returned to its neutral position before the predetermined time elapses, only a door which is being controlled by its key is unlocked.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vehicle door lock device having a power door lock.

[Prior art]

Conventionally, in vehicle door lock devices, the driver's door lock and the passenger's door lock are linked, and when the driver's door lock is locked, at least the passenger's door lock is linked. An increasing number of vehicles are equipped with power door locks, in which when the driver's side door lock is unlocked, at least the passenger's side door lock is also unlocked.

[Problem to be solved by the invention]

However, in the above conventional vehicle door lock device having a power door lock, when the driver's door lock is unlocked, other door locks are automatically unlocked in conjunction with the driver's door lock. Even when only the driver's door needs to be opened and closed, such as when only the driver gets into the vehicle, the other doors will be unlocked, even though there is no need to open or close the other doors. When no occupant is present, there is a risk that the door of the seat may be opened from the outside and the luggage left on the seat may be stolen, making the passenger careless.

An object of the present invention is that when only one door needs to be opened, only the door lock of the door operated by the unlocker can be unlocked, and when other doors also need to be opened, the door lock of the door on the driver's side can be unlocked. To provide a door opening ivy device for a vehicle capable of opening and opening other door opening ivy in conjunction with opening and opening.

(Means for Solving the Problems) In order to achieve the above object, the vehicle door lock device of the present invention detects when a key cylinder provided on a vehicle door and a key is rotated toward the unlock side. detection means for
and a timer that starts operating when the key is rotated to the unlock side, and all doors are unlocked when the key is held in the unlock side rotation position for a predetermined period of time (for example, 2 seconds) or more, If the time is less than a predetermined time, only the door whose key is being operated is unlocked.

[Effect]

In the vehicle door lock device of the present invention configured as described above, when the key is inserted into the key cylinder of the door to be opened and the key is turned to the unlock side, the detection means moves the key to the unlock side. The timer starts operating when it detects that it has been rotated.

When the key is held in the unlocked rotation position and the timer detects that a predetermined period of time has elapsed, the key is returned from the unlocked side to the neutral position, and all doors are unlocked.

If the key is returned from the unlock side to the neutral position before the timer detects that a predetermined period of time has elapsed, only the door being operated by the key will be unlocked.

〔Example〕

Embodiments of the present invention will be described based on the drawings.

In Fig. 1, a door lock key cylinder 1 provided on the driver's side door of the vehicle is provided with a keyless switch that turns on when the key is inserted and turns off when the key is removed, and the key is rotated to the unlock side. 6. When the detection means detects that the key has been turned to the unlock side, the timer 2 is activated by the ON signal of the keyless switch.
starts operating.

By returning the key from the unlock side to neutral and removing the key from the door lock key cylinder 1, the keyless switch is turned off and the timer 2 stops.
is input.

The microcomputer 3 outputs an output to the bases of the first power transistor 5 and the second power transistor 7 according to the operating time of the timer 2, and when the first power transistor 5 is turned on, the door of the driver's side door where the key is being operated is output. The lock motor 6 is operated to unlock the driver's side door, and when the second power transistor 7 is turned on, the door lock motor 8 for the passenger's side door is operated to unlock the passenger's side door.

Although the microcomputer 3 is employed here, a control circuit having a function of generating an output corresponding to the operating time of the timer 2 may be used instead of the microcomputer.

Next, the operation will be explained with reference to FIGS. 2 to 4.

When the key is inserted into the door lock key cylinder 1 provided on the driver's side door and turned to the unlock side, the timer 2 starts operating, and when the key is returned to the neutral position, the timer 2 stops. do.

When the operating time of the timer 2 is longer than a predetermined time (for example, 2 seconds), the microcomputer 3 outputs the first
It is input to the bases of the power transistor 5 and the second power transistor 7 respectively, and both power transistors 5.7
The door lock motor 6 of the driver's side door and the door lock motor 8 of the passenger's side door are turned on and key operations are performed.
Activate to unlock the driver's side door and passenger's side door (see Figure 4).

When the operating time of the timer 2 is less than the predetermined time (2 seconds), the microcomputer 3 outputs the output only to the first power transistor 5, and outputs the output to the door lock motor 6 of the driver's side door.
to unlock the driver's side door (see Figure 3).

So far, we have only talked about the driver's side door and the passenger's side door, but it goes without saying that it is a good idea to install the door door opening device on other doors as well. When the side rotation position is held for a predetermined time or more, all doors are unlocked, and when the time is less than the predetermined time, only the door operated by the key is unlocked, making it convenient for simply loading and unloading luggage. It's good.

〔Effect of the invention〕

Since the present invention is configured as described above, it produces the effects described below.

Insert the key into the key cylinder of the door you are trying to open,
When held in the rotation position on the unlocking side for more than a predetermined time, all doors will be unlocked, and when it is less than the predetermined time, only the door where the key was operated will be unlocked, so you can unlock only the doors you need. Theft from other doors can be prevented without unlocking unnecessary doors, and all doors can be unlocked at once when necessary.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention; FIG. 1 is a block diagram, FIG. 2 is a flowchart, and FIGS. 3 and 4 are time charts. DESCRIPTION OF SYMBOLS 1... Door lock motor cylinder, 2... Timer 3... Microcomputer, 5... First power transistor, 6... Door lock motor (driver's seat side), 7... First
Power transistor, 8...Door lock motor (passenger side).

Claims (1)

[Claims] (1) A key cylinder provided on the door of the vehicle, a detection means for detecting that the key has been turned to the unlock side,
Equipped with a timer that starts operating when the key is turned to the unlock side, all doors are unlocked when the key is held in the unlock side rotation position for a predetermined time or more, and when it is less than a predetermined time. A vehicle door lock device characterized in that only the door whose key is being operated is unlocked.