JPH0623661Y2 - Vehicle door lock device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a door lock device for a vehicle, and more particularly to a door lock device capable of preventing a half-door and ensuring reliable automatic locking.

[Prior Art] A locking device for a vehicle door is generally one in which a latch plate provided on the door is engaged with a striker provided on the edge of the door opening. It becomes a so-called half-door state of engagement.

To solve this problem, Japanese Patent Application No. 61-120792 proposes a door lock device for automatically rotating the latch plate to completely engage the striker after the door is lightly closed to be in the half-door state. Therefore, even a child can surely close the door.

[Problems to be Solved by the Invention] Although the above proposed door lock device exhibits the above-mentioned excellent effects, there is a problem that a separate locking device is required for locking after the door is closed. was there.

The present invention solves such a problem, and an object of the present invention is to provide a door lock device capable of preventing a half-door and securely closing the door and also capable of locking.

[Means for Solving the Problems] The structure of the present invention will be described with reference to the drawings. The striker (FIG. 3) provided at the door opening edge of the vehicle body is rotationally engaged through a half-engaged state to complete the door. The latch plate 1 to be closed, the half-engagement detection means 3 for detecting the half-engagement state of the latch plate 1 and the striker 2, and the half-engagement detection signal issued by the half-engagement detection means 3 from the original position. Latch plate driving means 4 which moves forward and completely engages the latch plate 1 with the striker 2 at the front end position, and retreats to the original position again, and position detecting means 5A, 5B for detecting the position of the latch plate driving means 4.
(FIG. 1), a selection means 6 for selectively setting locking and unlocking of the door, the latch plate driving means 4 is stopped at the front end position when the locking is selected, and the latch plate driving means 4 is selected when the unlocking is selected. And a control means 7 for stopping at the original position retracted from the front end position.

[Operation] When the door is lightly closed to form a half door in which the latch plate 1 and the striker 2 are in a half-engaged state, the latch plate driving means 4 moves forward to rotationally move the latch plate 1, and the latch plate 1 at the front end position. Is completely engaged with the striker 2. The selection means 6
When the locking is selected by, the latch plate drive means 4 is stopped at the front end position by the control means 7,
The return rotation of the latch plate 1 becomes impossible and the latch plate 1 is locked.

On the other hand, when unlocking is selected by the selecting means 6,
The latch plate drive means 4 is stopped at the original position retracted from the front end position, and the latch plate 1 can be returned and rotated to be unlocked.

[Effect] According to the door lock device of the present invention, the door can be completely closed by a light operation, and the door can be locked arbitrarily without providing a separate locking device.

[Embodiment] An overall perspective view of the door lock device of the present invention is shown in FIG. 2, and a perspective view of the lock mechanism is shown in FIG.

In the figure, a latch plate 1, a latch plate drive arm 4, a motor 41, a cam plate 42, and the drive arm 4 are provided in a device housing H fixed to a door panel of a slide door.
Reed switches 5A, 5B and the like for detecting the position of are internally provided.

The latch plate 1 is a door panel P facing the door opening edge.
It is located so as to face the end face of FIG. 3 and is rotatable about the support shaft 11 and is biased and held in the posture shown in FIG. 3 by a spring member (not shown) attached to the support shaft 11.

A notch 12 is formed in the latch plate 1, and the notch 1
2 is facing the striker 2 provided at the door opening edge. A latch pin 13 is provided upright on the plate surface of the latch plate 1, and a limit switch 3 for detecting the half-engaged position of the latch plate 1 is provided above the latch pin 13. The contact 31 of the limit switch 3 is in contact with the outer peripheral surface of the latch plate 1,
One part of the outer peripheral surface is projected outward to form a protrusion 1a.

A lock plate 8 is provided below the latch plate 1 so as to be rotatably supported by a support shaft 81, and the lock plate 8 is provided with the support shaft 8 described above.
It is held in the posture shown in FIG. 3 by a spring member (not shown) attached to 1. The lock plate 8 is connected to the door handle via an unlock wire (not shown).

One end of the drive arm 4 is in contact with the latch pin 13 of the latch plate 1. The drive arm 4 is a fan-shaped plate (FIG. 1), and its central portion located above is rotatably supported by the support shaft 43. A roller 44 is provided at the other end of the drive arm 4, and the roller 44 is provided on the support shaft 43.
The cam plate 42 is brought into abutment with a spring member attached to the cam plate 42. A magnet 4 is provided at the center of both end faces of the drive arm 4, respectively.
5A and 45B are provided, and the reed switches 5A and 5B are provided.
B is provided facing each of the magnets 45A and 45B.

The cam plate 42 is fixed to the output shaft of the motor 41, and the outer peripheral cam surface thereof gradually becomes a peripheral surface away from the center, and the terminal end thereof is stepped down toward the center.

The above limit switch 3, reed switches 5A, 5B,
The motor 41 is connected to a control circuit 7 which will be described in detail later, and the control circuit 7 is connected to the selection switch 6 provided on the door inner panel.

A side view of the selection switch 6 is shown in FIG. The switch 6 is a seesaw type switch, and two left and right positions of the V-shaped upper surface are operation surfaces 6a and 6b. The figure shows the case where locking is selected, and the operation surface 6a is pushed down from the state of the chain double-dashed line in the figure. In this state, the built-in alternate contact is closed to the lock side. The operation surface 6a
When is further depressed as shown by the broken line in the figure, the momentary contact with the built-in switch is further closed to the locking side.

When unlocking is selected by the selection switch 6, the operation surface 6b is pushed down.

The details of the control circuit 7 are shown in FIG.

The reed switches 5A and 5B are connected to interface circuits 701 and 702 for noise prevention, and outputs S7 and S8 of the interface circuits 701 and 702 are input to JK flip-flops 703 and 704. These flip-flops 703 and 704 are reset by the output S3 of the reset signal generation circuit 709.

AND gates 705A and 705B, NOT gate 70
6, the OR gate 707 constitutes a selection circuit, and the outputs S5 and S6 of the respective flip-flops 703 and 704 are inputted to this selection circuit. The output S9 of the alternate contact 61 of the selection switch 6 is input to the selection circuit.

The output S10 of the selection circuit is the output S of the timer circuit 710.
4 to the NOR gate 708, and the gate 708
The output S11 of this causes the relay 712 to operate via the relay drive circuit 711. Contact 71 of relay 712
2a activates the motor 41.

A timer circuit 714 is connected to the vehicle-mounted battery 713 via the limit switch 3, and the output S1 of the timer circuit 714 activates a relay 716 via a relay drive circuit 715. An operating voltage is supplied from the on-vehicle battery 713 to the motor 41, the relay 712, and the constant voltage power supply circuit 717 via the contact 716a of the relay 716, and the timer circuit 710 and the reset signal generation circuit 709 are connected to the constant voltage power supply. It is activated by the output S2 of circuit 717.

The momentary contact 62 of the selection switch 6 is connected in parallel to the relay contact 716a.

The operation of the door lock device having the above structure will be described below.

When lock is selected by the selection switch 6, the contact 61 is closed to the L side as shown in FIG. When the door is lightly closed in this state, the striker 2 is cut into the notch 12 of the latch plate 1.
It enters the inside and is rotated to make a half-engaged half-door state (Fig. 8). In this state, the protrusion 1a of the latch plate 1 abuts on the contact 31 of the limit switch 3 to activate the limit switch 3.

When the limit switch 3 operates, the output S1 is emitted from the timer circuit 714 and the relay contact 716a is closed to supply the operating voltage, as shown in the time chart of FIG. A reset output S3 is generated by the output S2, and the flip-flops 703 and 704 are reset.

In this state, the output S9 of the selection switch 6 indicates the "1" level, and the gate 705 is open. The output S4 of the timer circuit 710 is the flip-flops 703, 7 described above.
After the reset of 04 is completed, the level becomes "0", and N
The OR gate output S11 is emitted, the relay 712 is activated, and the motor 41 is activated.

The cam plate 42 is rotated by the motor 41, and accordingly, the drive arm 4 is rotated forward and the latch pin 13 is rotated.
Is pushed up and the latch plate 1 is rotated so that the latch plate 1 is completely engaged with the striker 2 at the front end position of the drive arm 4 (FIG. 9). In this state, the lock plate 8 is the latch plate 1
Fully engage with.

When the latch plate 1 reaches the front end position, the magnet 4 provided on the front end position
5A approaches the reed switch 5A to activate it. Then, the output S8 of the interface circuit 702
Thereby flip-flop output S6 is inverted to "1" level, and outputs S10 and S11 are respectively set to "1" level,
The level becomes "0" and the operation of the motor 41 is stopped.

As a result, the drive arm 4 is stopped at the front end position shown in FIG. 9, and the return rotation of the latch plate 1 is blocked to bring it into the locked state.

The timer circuit 714 is operated until all the above operations are completed.
Maintains the output S1 at "1" level.

When unlocking is selected by the selection switch 6, the switch contact 61 is closed on the U side, and the output S9 becomes "0" level. Then, the gate 705B opens.

The time chart of each output is shown in FIG.
Causes the motor 41 to start in synchronization with the fall of the output S4, as in the case of locking. Then, after that, the drive arm 4 retreats from the front end position to the original position (the chain line in FIG. 9) again, and the magnet 45B provided on the drive arm 4 approaches the reed switch 5B to operate the reed switch 5B to operate the output S.
The operation is continued until S7 and S5 are issued.

As a result, the drive arm 4 returns to its original position, stops, and enters an unlocked state. That is, when the door handle is pulled in this state, the lock plate 8 rotates and the engagement with the latch plate 1 is released,
The latch plate 1 is returned and rotated to open the door.

When it is desired to lock the door after unlocking the door and setting the door in this state, the operation surface 6a of the selection switch 6 is sufficiently depressed. As a result, the alternate contact 61 is closed to the L side and the momentary contact 62 is closed to the L side.
The motor 41 operates according to the above-mentioned process, and the drive arm 4 is moved to the front end position to be locked.

When unlocking the door in the closed state, the operation surface 6b of the selection switch 6 is fully pushed down this time. As a result, the torque contact 61 is closed on the U side and the momentary contact 62 is closed on the U side, and the drive arm 4 is returned to the original position and brought into the unlocked state.

In the above embodiment, the operation of the device by the lock / unlock selection switch provided on the door inner panel has been described, but the same operation can be realized by the door key switch instead of the selection switch. Further, as the position detecting means for detecting the position of the latch plate driving means, the latch plate driving means is rotatably supported by the support shaft as in the embodiment and is rotated by a cam plate fixed to the output shaft of the motor. In the case of the driven arm, a rotation angle detector such as a potentiometer can be used.

[Brief description of drawings]

1 is a perspective view of a lock mechanism, FIG. 2 is an overall perspective view of a door lock device, FIG. 3 is a schematic front view of a latch plate, FIG. 4 is a side view of a selection switch, and FIG. 5 is a control circuit. circuit diagram,
FIGS. 6 and 7 are time charts of output signals of the control circuit. FIG. 6 shows a state when locking is selected, FIG. 7 shows a state when unlocking is selected, and FIGS. It is a schematic front view of the latch plate which shows the state of engagement and full engagement. DESCRIPTION OF SYMBOLS 1 ... Latch plate 2 ... Striker 3 ... Limit switch (half engagement detection means) 4 ... Latch plate drive arm (latch plate drive means) 41 ... Motor 5A, 5B ... Reed switch (position detection means) 6 ... Selection switch (selection Means) 7 ... Control circuit (control means)

Claims (1)

[Scope of utility model registration request] 1. A latch plate which is rotationally engaged with a striker provided at a door opening edge of a vehicle body in a half-engaged state to completely close the door, and a half-engaged state of the latch plate and the striker is detected. A half-engagement detection means and a half-engagement detection signal issued from the half-engagement detection means advance the home position to completely engage the latch plate with the striker at the front end position.
Latch plate driving means for retracting to the original position again, position detecting means for detecting the position of the latch plate driving means, selecting means for selectively setting locking and unlocking of the door, and the latch plate driving means for selecting locking And a control means for stopping the latch plate drive means at the original position retracted from the front end position when unlocked is selected.