JP2557175Y2 - Vehicle door lock device - Google Patents

Description

[Detailed description of the invention]

[0001]

This invention relates to a vehicle door lock device,
More particularly, the present invention relates to a door lock device provided with a closer motor for rotating the latch from the half lock position to the full lock position when the latch is in the half lock position during a door closing operation.

[0002]

2. Description of the Related Art A weather strip is used to seal a gap between a door opening edge of a vehicle body and an outer periphery of the door. In order to increase the sealing force, the door is closed so that the weather strip is strongly pressed. It is desirable to keep the door closed. However, this increases the door closing operation force.

Accordingly, a door lock device provided with a closer motor for detecting when the door latch is at the half lock position with respect to the striker and operating the door latch to rotate the latch from the half lock position to the full lock position, A so-called easy closer device is used. According to this device, when the door is closed with a light touch, the latch is automatically brought to the full lock position, and the door is closed.

[0004]

However, in such a door lock device, if the door is opened again when the door is closed, the closer motor is turned off, but the rotation continues for a while due to inertia. It rotates in the locking direction and projects into the approach trajectory of the striker.
In this case, the door may not be able to be closed.

An object of the present invention is to solve such a problem and to provide a door lock device that can smoothly reclose a door even when the door is opened from a half-lock state.

[0006]

As shown in FIG. 2 (showing when the door is open), the door lock device of the present invention has a latch 3 which engages with and disengages from the striker 2, and the latch 3 is in a half-lock position (FIG. 3). And a lift arm 6 actuated by the cam 5 to rotate the latch 3 from the half-lock position to the full-lock position (FIG. 5). I have.

Further, when the door is opened immediately after the latch 3 is in the half-lock position (FIG. 6), the latch 3 is rotated by the cam 5 continuously rotated by the inertia force of the closer motor 4.
Is provided with a latch operation prohibiting means (in the illustrated example, an engaging groove 8 formed on the cam surface 51 and engaging with one end of the lift arm 6) for prohibiting rotation of the lift arm 6 in the locking direction.

[0008]

When the door is opened at the half-lock position and the cam 5 continues to rotate, the engagement groove 8 of the cam 5 is
, The lift arm 6 is rotated in the direction opposite to the locking direction of the latch 3, and the latch 3 is not operated in the locking direction.

[0009]

1 shows a rear end portion R of a sliding door 1 of a vehicle shown in FIG.
The door lock device of the present invention is provided inside the door.

FIG. 2 shows the apparatus when the door is opened. The apparatus includes a latch 3, a closer motor 4, a cam 5, and a lift arm 6 which are engaged with and disengaged from a striker 2 provided at a door opening edge of a vehicle.
It has.

The latch 3 has a notch 31 and a rotational force is urged by a spring in the direction of arrow A by a spring. When the door is opened, the notch 31 is directed obliquely downward, and the striker 2 is formed in the door 1 so that the striker 2 is formed. The position is such that the horizontal notch 11 to enter and the opening coincide with each other. Cam 5 is closer motor 4
And a cam shaft connected to the motor 4
It is rotationally driven in the direction (FIG. 3). The lift arm 6 is interposed between the cam 5 and the latch 3, and a rotational force is urged in the direction of arrow B by a spring. One end contacts the pin 32 projecting from the latch 3, and the pin 62 projecting from the other end comes into sliding contact with the outer peripheral cam surface 51 by rotation of the cam 5. The rotational urging force is A> B. Reference numeral 7 denotes a pole operated by a door handle 10 (FIG. 1), which is urged in the direction of arrow D to engage with a stopper 9 projecting from the door. The closer motor 4 is connected to a control circuit (not shown), and when the door is closed, the striker 2 is received by the latch 3 and is activated when the latch 3 is in the half-lock position.

Further, in the present apparatus, the outer cam surface 51 of the cam 5
Further, an engagement groove 8 is formed as the latch operation inhibiting means.

Hereinafter, the details of the present apparatus and its operation will be described. When the slide door 1 is closed from the open state in FIG. 2, the striker 2 enters the notches 11 and 31 of the door 1 and the latch 3, and the latch 3 is pushed and rotated, whereby the latch 3 is moved to FIG. The half lock position is reached as shown. In this position, the latch 3 is provided with the groove 3 formed at one end thereof.
3 engages the pole 7.

With the rotation of the latch 3, the lift arm 6 rotates in the direction of arrow B to the position shown in FIG. Further, the closer motor 4 starts operating at the half-lock position, and the cam 5 starts rotating in the direction of arrow C.
Numeral 2 is moved in a direction away from the cam 5 by rotation of the lift arm 6, and is not in contact with the outer peripheral cam surface 51 of the cam 5.

Next, when the cam 5 rotates further with the rotation of the closer motor 4, the cam surface 51 comes into contact with the pin 62 of the lift arm 6 as shown in FIG. 3 starts rotating from the half lock position to the full lock position. Thus, there is a slight difference between the timing at which the latch 3 starts rotating from the half-lock position and the closer motor 4 starts rotating from the half-lock position to the full-lock position.

The engagement groove 8 of the cam 5 is formed on the short diameter side of the cam 5, and as soon as the cam 5 starts rotating, the lift arm 6
Of the pin 62 without contact.

When the cam 5 further rotates from the state shown in FIG.
The lift arm 6 rotates in the direction of pushing up the pin 32 of the latch 3, and when the cam surface 51 that comes into sliding contact with the pin 62 of the lift arm 6 reaches the apex, as shown in FIG.
Is in the full lock position, and the side surface of the end is engaged with the pawl 7 at this position, whereby the slide door 1 is fully closed.

By the way, when the door 1 is closed and the latch 3 is in the half-lock position, an attempt is made to open the door 1 in an emergency such as when clothes are caught in the door 1 or for any reason. There are cases. In such cases,
By providing the timing difference from the state shown in FIG. 3 to the state shown in FIG. 4, if the door handle 10 is pulled to release the pawl 7 from the latch 3, the striker 2 can be pulled out from the latch 3 and the door can be opened. .

FIG. 6 shows the operation after the door is opened. When the half lock of the latch 3 is released and the striker 2 escapes, the closer motor 4 is turned off, but the motor 4 is instantaneously turned off. It does not stop and continues to rotate with inertia. Accordingly, the cam 5 also rotates, but the engagement groove 8 engages with the pin 62, whereby the lift arm 6 is given a rotational force in the direction of arrow E against the rotational urging force B (FIG. 2). Therefore, since the lift arm 6 does not push up the pin 32 of the latch 3, no rotational force in the locking direction acts on the latch 3, and the latch 3 is held at the unlocked position by the rotational biasing force (arrow A) of the latch 3 itself. Can be reclosed. At this time, the rotation of the cam 5 due to the inertial force is caused by the rotation urging force B of the lift arm 6.
(FIG. 2), a resistance is received, and this becomes a brake and stops.

Thereafter, when the latch 3 is brought to the half-lock position by re-closing the door, the closer motor 4 is actuated again and FIG.
The full lock position shown in FIG.

[0021]

According to the door lock device with a closer motor of the present invention, when the door is urgently opened from the half-lock position, the latch rotates in the locking direction regardless of whether the closer motor continues to rotate due to inertia. Since there is no movement, the door can be reclosed without any problems.

[Brief description of the drawings]

FIG. 1 is a view showing a sliding door of a vehicle to which the door lock device of the present invention is applied.

FIG. 2 is a diagram showing a state of the door lock device of the present invention when the door is opened.

FIG. 3 is a view showing a half-locked state of the door lock device.

FIG. 4 is a diagram showing a state immediately before the door lock device shifts from a half lock state to a full lock state.

FIG. 5 is a view showing a fully locked state of the door lock device.

FIG. 6 is a view showing a state when a door is opened at a half lock position of the door lock device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Slide door 2 Striker 3 Latch 4 Closer motor 5 Cam 6 Lift arm 7 Pole 8 Latch operation prohibition means (cam engagement groove)

Claims (1)

(57) [Scope of request for utility model registration] 1. A latch which engages / disengages a striker on the vehicle body with closing / opening of a door, a closer motor which operates at a half-lock position of the latch, a cam which is rotationally driven by the closer motor, and which is operated by the cam. A latch arm that rotates the latch from the half-lock position to the full-lock position when the door is opened in the half-lock position of the latch and continues to rotate by inertia of the closer motor when the latch is locked. A vehicle door lock device having a latch operation prohibiting means for prohibiting a rotation operation.