JP2549049Y2 - Vehicle door lock device - Google Patents

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 provided with a lock mechanism which is very excellent in antitheft properties.

[0002]

2. Description of the Related Art Generally, a door lock device can obtain a locked state and an unlocked state by performing a lock operation and a lock release operation with a key cylinder or a door lock knob, respectively.

When a door lock device in a locked state is attacked from the outside by unauthorized means, it is unlocked,
Since it is not desirable in terms of theft resistance, a door lock device incorporating a theft prevention mechanism that keeps a locked state even if attacked by unauthorized means has already been known.

[0004]

In the door lock device incorporating the antitheft mechanism as described above, even if the door lock device is attacked by unauthorized means, the locked state is ensured by the operation of the antitheft mechanism, and the antitheft property is ensured. Demonstrate very excellent power in terms of. On the other hand, if the anti-theft mechanism fails after the setting is completed, the locked state is not released, and a problem occurs that the door cannot be opened even by the owner.

Accordingly, it is an object of the present invention to provide a vehicle door lock device which can be unlocked when a failure occurs in a theft prevention mechanism.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a lock operation by a key cylinder and a lock knob, wherein a knob lever is moved to a first operating position to lock a door lock, and a lock release operation is performed. Sometimes, in a door lock device in which a knob lever moves to a second operating position to unlock the door lock, the knob lever allows the knob lever to move to the first and second operating positions when in the unlocked position, While the knob lever restraining device that restrains the movement of the knob lever when in the locked position is connected, there is provided a connection releasing means for releasing the connecting portion between the knob lever and the knob lever restraining device by an operation switch provided in the trunk.

[0007]

According to the vehicle door lock device, the knob lever can be moved to the first and second operating positions by setting the knob lever restraining device connected to the knob lever to the unlock position. Locking and unlocking can be performed without any trouble.

Next, when the knob lever restraining device is set to the lock position, the knob lever is in the restrained state, so that the locked state will not be released even if an attack is made by unauthorized means.

In this case, when the knob lever restraining device breaks down during operation, the trunk is opened by the key, and the connection with the knob lever is released by operating the connection releasing means by the operation switch, thereby unlocking the door lock. The lock can be released.

[0010]

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

In FIG. 1, reference numeral 1 denotes a door lock. The door lock 1 is locked by a lock operation (arrow A in FIG. 3) or a lock release operation (arrow B) by the key cylinder 3 and a lock operation (arrow C in FIG. 3) or unlock operation (arrow D) by the lock knob 5. The knob lever 7 is movable between a first operating position P1 and a second operating position P2 which is in an unlocked state.

The knob lever 7 is directly connected to the lock knob 5 via a rod 9, while being connected to the key cylinder 3 via a transmission mechanism in the door lock 1 and a rod 11.

When the knob lever 7 is locked at the first operating position P1, the door lock 1 is operated even if the inside handle 13 or the outside handle 15 linked to the door lock 1 via the rods 14 and 16 is operated. The steering wheel operation is set to miss. Knob lever 7
When the lock is released to the second operating position P2, the inside handle 13 and the outside handle 15 can be operated.

On the other hand, the knob lever 7 of the door lock 1
The knob lever restraining device 17 is connected.

The knob lever restraining device 17 includes the housing 1
9, a drive motor 21 that can be rotated forward and backward,
The worm wheel 23 includes a worm wheel 23 whose rotation is controlled by the drive motor 21, and a cam body 27 that is interlocked and connected via a guide pin 25 of the worm wheel 23.

The drive motor 21 is controlled so as to be able to rotate forward or reverse by a signal from a first control unit 29 described later, and a worm 33 is mounted on a motor shaft 31 of the drive motor 21.
The worm 33 is provided with the worm wheel 23.
And are engaged.

The worm wheel 23 has a wheel shaft 23
a and the guide pin 25 is provided.

The cam body 27 is rotatably mounted and supported at a lock position R1 and an unlock position R2 with the cam shaft 35 as a fulcrum. The lock position R1 and the unlock position R2 are detected by the detection switch 30. ing. The cam body 27 has an engagement groove 3 which engages with the guide pin 25.
7 are provided.

The engagement groove 37 has a substantially T-shape including an arc-shaped groove 37a centered on the cam shaft 35 and a straight regulating groove 37b extending from a substantially central portion of the arc-shaped groove 37a.

The relationship between the engagement groove 37 and the guide pin 25 is as follows.
As shown in FIGS. 4 and 6, the drive motor 21 rotates forward, and the guide pin 25 faces the arc-shaped groove 37a.
To the lock position R1 and the unlock position R2. Further, the drive motor 21 rotates in the reverse direction, and the guide pin 2
The cam 5 is constrained at the lock position R1 by the projection 5 facing the regulating groove 37b.

The cam member 27 and the knob lever 7 are connected to the connecting member 3.
9 and are linked.

That is, one end of the connecting member 39 is fixed to the cam shaft 35 of the cam body 27, and the other end is integrally connected to the knob lever 7 via the connecting pin 41.

The connection member 39 is made of a synthetic resin material, and is cut by the connection release means 43.

The connection releasing means 43 contacts the upper surface and the lower surface of the connecting member 39 so that the heating wire 45 is sandwiched therebetween, and both ends of the heating wire 45 are directed outward by a metal holding bracket 47 (see the arrow in FIG. 1). (E direction) and supported in a strongly pulled state.

The heating wire 45 is supplied with a current from the battery 55 by turning on an operation switch 53 provided in the trunk 51 by the second control unit 49 so that the heating wire 45 can be turned on and off.

As a result, the heating wire 45 is heated so that the connecting member 39 is melted and bitten, so that the upper and lower heating wires 45 always work as one.

FIG. 8 is an overall block diagram having first and second control units 29 and 49. The locking and unlocking signals from the remote controller 57 and the signals of the lock position R1 and the unlock position R2 from the detection switch 30 are input to the first control unit 29, respectively. Further, based on a signal from the second control unit 49, a signal for rotating the drive motor 21 of the knob lever restraining device 17 forward or backward is output, and a signal from the detection switch 30 and the remote control 57 is sent to the second control unit 49. Output.

The second controller 49 has a built-in timer T. If the signal from the first controller 29 is within a predetermined time, it is determined that the operation is normal, and the ON operation of the operation switch 53 is missed. If the signal continues to be input for a predetermined time or longer, it is determined that the knob lever restraining device 17 has failed, and the circuit portion 59 from the battery 55 is turned on, and the operation switch 5 is turned on.
It functions so as to obtain the ON operation receiving standby state of No. 3.

Next, the operation of the door lock device will be described with reference to FIG. When the door is closed (step S1) and the knob lever restraining device 17 is operated, that is, in the deadlock state (step S2), an unlock signal is input to the first control unit 29 by the remote controller 57. The signal of the lock position R1 and the locking signal from the detection switch 30 are input to the first control unit 29, and output to the second control unit 49 (steps S4 and S5). The second control unit 49 determines whether the input signal is less than or equal to 2 seconds (step S6).
When less than 2 seconds, drive motor 2 of knob lever restraining device 17
Turn 1 forward.

It is determined whether the guide pin 25 is located in the arc-shaped groove 37a, and the operation is continued until completion (step S).
7). After the operation is completed, the restraint by the knob lever restraining device 17 is released, and the door lock 1 can be unlocked by key operation (steps S8, S9).

On the other hand, when a signal is continuously input into the second control unit 49 for two seconds or more, it is determined that the knob lever restraining device 17 has failed, and the circuit unit 59 of the battery 55 is turned on (step S10). . Next, the user opens the trunk lid and turns on the operation switch 53 (step S11). When the operation switch 53 is turned on, the connection release means 43 is operated to disconnect the connection member 39, and the knob lever restraining device 17
As a result, the door lock 1 can be unlocked with the key (step S8, step S8).
S9). Therefore, even if the knob lever restraining device 17 breaks down, the door can be opened.

The connecting member 39 can be reused by replacing it with a new one at a factory.

[0033]

As described above, according to the vehicle door lock device of the present invention, the door lock can be unlocked by the connection release means even if the knob lever restraining device fails in the operating state. The door can be opened without any trouble.

[Brief description of the drawings]

FIG. 1 is an enlarged perspective view showing a connection releasing means according to the present invention.

FIG. 2 is a side view of an automobile implementing the present invention.

FIG. 3 is an explanatory view of the entire door lock.

FIG. 4 is an explanatory view of the entire knob lever restraining device at the time of unlocking.

FIG. 5 is a perspective view showing a relationship between a guide pin and an engagement groove at the time of unlocking.

FIG. 6 is an explanatory view of the entire knob lever restraining device at the time of unlocking.

FIG. 7 is a perspective view showing a relationship between a guide pin and an engagement groove at the time of locking.

FIG. 8 is a block diagram of the entire door lock.

FIG. 9 is a flowchart showing the operation of the door lock device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door lock 3 Key cylinder 5 Lock knob 7 Knob lever 17 Knob lever restraint device 43 Connection release means 51 Trunk 53 Operation switch

Claims (1)

(57) [Scope of request for utility model registration] When a lock operation is performed by a key cylinder and a lock knob, a knob lever moves to a first operation position to lock a door lock, and when an unlock operation is performed, the knob lever moves to a second operation position to lock the door lock. In the door lock device to be released, the knob lever is connected to a knob lever restraining device that allows the knob lever to move to the first and second operating positions when in the unlocked position and restrains the movement of the knob lever when in the locked position. On the other hand, a door lock device for a vehicle, further comprising a connection releasing means for releasing a connecting portion between the knob lever and the knob lever restraining device by an operation switch provided in the trunk.