JPH0726817A - Door lock device - Google Patents

Abstract

PURPOSE:To protect a door lock device from damages by installing door and hood detection switches to a deadlock mechanism which constrains the movement of a knob lever at a door-locked position and preventing a deadlock operation even if one is opened. CONSTITUTION:When a car door is locked with a key cylinder 2, the operation of an actuator 20 which is driven with a motor 23 whose operation is controlled with a control circuit 20, locks the movement of a knob lever at a door-locked position. A door detection switch 28 and a hood detection switch 29 are installed to the control circuit 20 of this deadlock mechanism 9, thereby detecting an opened and closed state of the door and the hood. When either a single door or a single hood is opened, it is so arranged that the deadlock mechanism 9 may not operate and the deadlock mechanism 9 is forcibly operated with a door which is not completely closed, thereby protecting the lock mechanism 9 from damaged inflicted by forced operations when noticed latter. This construction makes it possible to protect the lock mechanism 9 from any possible damages.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle door lock device.

[0002]

2. Description of the Related Art In some automobile door lock devices, a key cylinder is operated, for example, as shown in "New Model Car Manual Passat 319A Car" issued by Nissan Motor Co., Ltd. in May 1990. The lock mechanism is equipped with a so-called deadlock mechanism that locks the lock mechanism to lock and unlock the movement of the knob lever at the lock position, and operates the inside lock knob unless the lock of the knob lever is released by the deadlock mechanism. It is known that the lock can not be unlocked and the antitheft effect is obtained.

This will be described in detail with reference to FIG. 3. Reference numeral 1 is a lock mechanism mounted on the door body D on the driver seat side, 2 is a key cylinder provided near the outside handle 3, and 4 is a door of the door body D. Inside lock knobs 5 projectingly arranged at the waist indicate inside handles.

Reference numeral 6 is a knob lever which is connected to an inside lock knob rod 7 and locks and unlocks the lock mechanism 1 by operating the inside lock knob 4. The knob lever 6 is locked by operating the key cylinder 2 via a key cylinder rod 8. When the mechanism 1 is locked and unlocked, an electromagnetic actuator (not shown) built into the lock mechanism 1 locks the knob levers of all doors at the same time,
It is also designed to be operated in the unlocking direction.

9 is provided in the lock mechanism 1 of all doors,
Actuating rod 1 of actuator 10 driven by a motor
1 shows a deadlock mechanism in which 1 is connected to the knob lever 6 and the movement of the knob lever 6 is restrained and released by the operating rod 11.

These deadlock mechanisms 9 are simultaneously operated and controlled by a control circuit based on a detection signal from a detection switch (not shown) provided on the key cylinder 2, and the key plate (not shown) locks the key cylinder 2 in the locking direction.
By operating each of two actions in the unlocking direction, when the lock mechanism 1 is locked, the knob lever 6 is constrained at the lock position, and when the lock mechanism 1 is unlocked, the knob lever 6 is constrained before being unlocked. Has become.

Reference numeral 12 is an outside handle rod that is connected to the outside handle 3 to latch and unlatch the locking mechanism 1, and reference numeral 13 is an inside handle rod that is also connected to the inside handle 5 to latch and unlatch the locking mechanism 1. .

[0008]

According to the door lock device having the deadlock mechanism 9 as described above, once the lock mechanism 1 is locked by the operation of the key cylinder 2, the deadlock mechanism 9 causes the knob lever 6 to move in this locked position. In order to restrain the movement of the lock mechanism 1, the lock mechanism 1 is unlocked even if the door glass is destroyed and the inside lock knob 4 is unlocked unless the key cylinder 2 is rotated by the regular key plate (two-action operation). The anti-theft effect can be remarkably enhanced.

However, since the deadlock mechanism 9 restrains and releases the restraint of the knob lever 6 by the operation of the motor-driven actuator 10 as described above, the engine hood is opened and all the doors are closed, and the key cylinder 2 is operated. When the door lock mechanism 1 is locked and the deadlock mechanism 9 puts the lock mechanism 1 into a deadlock state, and then the battery is removed from the engine room to close the engine hood, the motor of the actuator 10 is affected. Since there is no voltage supply, even if the key cylinder 2 is operated, the deadlock mechanism 9 cannot operate to release the constraint,
It becomes impossible to unlock the lock mechanism 1 to open the door, the engine hood cannot be unlocked by operating the indoor opener, and the engine hood cannot be opened again.

Separately from this, even if one of all doors is a half door, the lock mechanism 1 is locked by operating the key cylinder 2 and the deadlock mechanism 9 is constrained to enter a deadlock state. Even when the door is in the half-door state, the deadlock mechanism 9 restrains the lock mechanism 1 in the half-door state to restrain the movement of the knob lever 6 by the actuation rod 11 of the actuator 10 in the half-latched state. Therefore, when the half door is noticed and the door is forcibly pushed to obtain the latched state of the lock mechanism 1, the lock mechanism 1 may be damaged.

Therefore, according to the present invention, when any one of the door and the engine hood is in the open state, the deadlock mechanism is not restrained even if the key cylinder is operated to prevent the above-mentioned problems from occurring. The present invention provides a door lock device that can be used.

[0012]

When locking a lock mechanism for all doors by a key cylinder, an actuator driven by a control circuit to drive a motor is actuated to be locked by being connected to an inside lock knob rod.
In a door lock device equipped with a deadlock mechanism for restraining the movement of a knob lever for unlocking operation at a lock position, a door detection switch for detecting the open / closed state of each door in the control circuit, and an open / closed state of a hood. A hood detection switch for detecting the deadlock is provided, and deadlock canceling means for canceling the restraining operation of the deadlock mechanism is provided when either one of the door and the hood is open.

[0013]

When either the door or the hood is opened, the deadlock canceling means is activated by the detection action of the door detection switch or the hood detection switch, and even if the key cylinder is operated in the locking direction, the deadlock mechanism is activated by the control circuit. The output of the restraint actuation signal to is canceled and the deadlock mechanism remains inoperative.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 illustrates a mode in which a control circuit 20 controls the operation of a deadlock mechanism provided in a lock device for each door of a four-door vehicle.

Reference numeral 21 denotes a detection switch provided on each of the key cylinders 2 (see FIG. 3) of the driver seat side door and the passenger side door, and when each key cylinder 2 is operated for two actions in the locking direction, a contact is opened at the second action. CP
A lock switch 21a for sending a deadlock-on signal to U22, and an unlock switch 21b for sending a deadlock-off signal to the CPU 22 by making a contact in the first action when each key cylinder 2 is operated by two actions in the unlocking direction. I have it.

Reference numeral 23 denotes a motor built in the actuator 10 of each deadlock mechanism 9. For example, by driving the motor 23 in the normal direction, the operating rod 11 of the actuator 10 shown in FIG. Is locked at the lock position, and the operating rod 11 of the actuator 10 is retracted by the reverse drive of the motor 23 to release the lock of the knob lever 6.

The knob lever 6 is connected to the inside lock knob rod 7 as described above, and the lock mechanism 1 is locked and unlocked by operating the inside lock knob 4 (see FIG. 3). When the lock mechanism 1 is locked and unlocked via the key cylinder rod 8 by the operation of, all knob levers 6 are simultaneously locked and unlocked by an electromagnetic actuator (not shown) built into the whole lock mechanism 1. ing.

Each motor 23 has a detection switch 21.
The voltage of the battery 26 is applied to the coil 24a of the lock side drive relay 24 via the CPU 22 based on the deadlock ON signal of the lock switch 21a of
When b is turned on to form a closed loop, normal rotation is driven, and the unlock switch 2 of the detection switch 21 is used.
Based on the deadlock off signal of 1b, the voltage of the battery 26 is applied to the coil 25a of the unlocking side drive relay 25 via the CPU 22, and the contact 25b is turned on to form a closed loop so that the reverse drive is performed. ing.

Here, the control circuit 20 includes a door detection switch 28 which is provided at the mounting portion of each door and detects the open / closed state of the door, and an opening of the engine hood which is provided at the mounting portion of the engine hood. A hood detection switch 29 for detecting the closed state, and either the door or the engine hood 1
Deadlock canceling means 27 for canceling the restraining operation of the deadlock mechanism 9 is provided even when the deadlock mechanism 9 is open.

Each of the door detection switch 28 and the hood detection switch 29 is turned on when the door or the engine hood is fully closed, and turned off when they are opened including the half-opened state. When any one of the door detection switch 28 and the hood detection switch 29 is turned off, that is, when any one of all doors or the engine hood is in an open state, a detection signal is sent to the CPU 22 and the key cylinder 2 Even if the lock switch 2a of the detection switch 21 is turned on by operating in the lock direction, the output of the drive signal from the CPU 22 to the lock side drive relay 24 is canceled.

The deadlock canceling operation control of the deadlock mechanism 9 by the deadlock canceling means 27 is performed, for example, according to the routine shown in the flowchart of FIG.

When the key cylinder 2 is rotated in the locking direction and a deadlock ON signal is input from the detection switch 21 to the CPU 22 (the lock switch 21a is turned on), the door detection switch 28 is turned on in step 100.
It is judged whether all the doors are closed by the off state,
If the determination is affirmative, it is determined that all the doors are closed and the process proceeds to step 101.

In step 101, the hood detection switch 2
It is determined whether the engine hood is closed or not depending on the on / off state of 9, and if affirmative, it is determined that the engine hood is closed, and the process proceeds to step 102 and CP
U22 outputs a restraining operation signal to turn on the lock side drive relay 24, and the motor 2 of the actuator 10
3 is driven in the normal direction to restrain the deadlock mechanism 9.

If both steps 100 and 101 are negative, it is determined that the door and the engine hood are in the open state, and the process proceeds to step 103, where the output of the restraining operation signal from the CPU 22 is canceled and the deadlock occurs. The mechanism 9 remains inactive.

[0026]

As described above, according to the present invention, when any one of the door and the hood is in the open state, even if the deadlock mechanism is restrained by the operation of the key cylinder, the deadlock canceling means operates and controls. Since the output of the restraint actuation signal from the circuit to the deadlock mechanism is canceled, the deadlock mechanism can be left inoperative.

Therefore, after the deadlock mechanism is restrained by the key cylinder operation with the hood open,
The door and hood cannot be opened again as in the case where the battery is removed and the hood is closed, or after the deadlock mechanism is restrained while one of the doors is in the half door state, the half door is opened. This has a practically great effect that it is possible to avoid a situation in which the state is noticed and forcedly pushed to damage the lock mechanism.

[Brief description of drawings]

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

FIG. 2 is a flowchart showing the operation of the control circuit shown in FIG.

FIG. 3 is a schematic perspective view of a door lock device including a deadlock mechanism which is a target of the present invention.

[Explanation of symbols]

 1 ... Lock mechanism 2 ... Key cylinder 4 ... Inside lock knob 6 ... Knob lever 7 ... Inside lock knob rod 9 ... Deadlock mechanism 10 ... Actuator 20 ... Control circuit 23 ... Motor 27 ... Deadlock canceling means 28 ... Door detection switch 29 ... Hood detection switch

Claims (1)

[Claims] 1. When a lock mechanism for all doors is locked by a key cylinder, the movement of a knob lever that is locked and unlocked by being connected to an inside lock knob rod by the operation of an actuator that is controlled by a control circuit and driven by a motor is in a lock position. A door lock device having a deadlock mechanism for restraining the door by a door detection switch for detecting an open / closed state of each door in the control circuit;
A hood detection switch for detecting an open / closed state of the hood, and a deadlock canceling means for canceling the restraining operation of the deadlock mechanism when any one of the door and the hood is open. Door lock device.