JPH108803A - Door lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely prevent a problem of unwanted locking or unlocking due to unwanted actuation of an actuator at the time of a change in the locking- unlocking state by the displacement of a switch caused by attachment play between a cylinder lock or a lock knob and a lock lever. SOLUTION: In a door lock device comprising an actuator for driving a lock lever to lock or unlock through an output lever 3, the actuator comprises an output gear (swing gear) 4 driven with a motor 2 to rotate the output lever 3, a switch plate 6 having movable contact points 8a and 8b for interlocked movement with the output gear 4 with a specified play angle R in its rotating direction, and fixed contact points 7a and 7b disposed to oppose the movable contact points 8a and 8b. After the lock lever has rotated by the angle commensurate with the play angle, the switch plate makes interlocked movement to detect locked or unlocked state.

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, and more particularly, to a vehicle door lock device having an actuator for driving a locking lever to unlock and unlock the door.

[0002]

2. Description of the Related Art A door lock device mounted on a vehicle includes:
There are some which can be unlocked by operating a switch provided in a vehicle interior. That is, the door lock device is provided with an actuator, the output lever of the actuator is connected to the locking lever of the door lock device, and the locking lever can be driven to the locking / unlocking position by the actuator.

[0003] Further, the locking lever of the door lock device is also connected to a lock knob provided in the vehicle compartment or a door cylinder lock attached to the outside of the door, and is driven by manual operation of the lock knob and the door cylinder. The cylinder lock or the lock knob is connected to a locking lever of a door lock device via a connecting rod, and the door lock device is unlocked by operating a key or a lock knob. As a switch for detecting such a locked / unlocked state, a slide switch is provided in the case of the actuator in conjunction with the movement of the locking lever.

A drive motor, a swing gear integrally connected to an output lever connected to a locking lever of a door lock device, and a transmission member for transmitting the driving force of the motor to the swing gear are housed in the case of the actuator. Have been. A metal contact for detecting the locked or unlocked state is fixed to the swing gear in cooperation with a fixed contact on the printed circuit board fixed to the inner surface of the case, and the contact slides on the printed circuit board. The circuit is opened and closed to detect the locked / unlocked state. The actuator is operated when the switch is switched from the unlocked state to the locked state or from the locked state to the unlocked state, and the actuator of another door is also operated by the detection signal.

[0005]

However, between the cylinder lock or lock knob and the locking lever,
When the rocking lever rotates by the amount of the mounting play, the swing gear is integrally connected to the locking lever, so that the mounting play is directly transmitted to the contacts fixed to the locking lever and the switch is operated. The actuator is displaced and the locked / unlocked state is switched, and there is a possibility that the actuator may operate undesirably. The present invention
In view of the above circumstances, an object of the present invention is to provide a door lock device that can reliably prevent malfunction of an actuator.

[0006]

According to the present invention, there is provided a door lock device including an actuator for driving a locking lever to unlock and unlock a locking lever via an output lever, wherein the actuator is driven by a motor to rotate the output lever. An output gear having a movable contact, a switch plate having a movable contact and interlocking with a predetermined play angle in the direction of rotation of the output gear, and a fixed contact provided opposite to the movable contact. The locking / unlocking state is detected by contacting / separating from the fixed contact.

[0007]

Embodiments of the present invention will be described below with reference to embodiments shown in the drawings. 1 is a plan view of a door lock device, FIG. 2 is a plan view showing an internal structure of an actuator provided with an unlocking detection switch according to the present invention, FIG. 3 is a cross-sectional view of the actuator, and FIG. 4 is a switch according to the present invention. It is explanatory drawing which shows operation | movement of a mechanism.

[0008]

1 to 3, an actuator 1 is fixed to a door lock device 10. As shown in FIG. The actuator 1 includes a locking lever 12 of a door lock device 10.
An output lever 3 connected to the output lever 3 via an intermediate lever 13 is mounted in the case 1a. In the case 1a, a driving motor 2, a fan-shaped swing gear 4 integrally connected to the output lever 3, and a motor 2 are provided. A transmission member 5 for transmitting the driving force to the swing gear 4 is housed.

Here, a fan-shaped switch plate 6 is also overlapped on the swing gear 4, and a tip of the switch plate 6 protrudes in a radial direction to form an arc-shaped guide groove formed in the swing gear 4. A protrusion 6a engaging with 4a is formed. Then, the side surface of the guide groove 4a and the convex portion 6a
Can be interlocked with the swing gear 4 in a state in which the side surfaces are engaged. The switch plate 6 has a case 1
A metal contact 8 for detecting an unlocked state in cooperation with a printed circuit board 7 fixed to the inner surface is held, and the contact 8 is fitted and fixed to a projection 6b of an arm of the switch plate 6. A fixed portion 8c and two movable contacts 8a and 8b sliding on the printed circuit board 7 are provided on the printed circuit board 7 along the path of the contacts 8a and 8b.
Rows of fixed contacts 7a and 7b are provided. Then, the state where both the fixed contacts 7a and 7b and the movable contacts 8a and 8b are in contact with each other and the circuit is closed is a locked state of the door, and the one fixed contact 7a and the movable contact 8a are separated and the circuit is opened. The unlocked state is set as the unlocked state.

As shown in FIGS. 2 and 4, a gap D is provided in the rotational direction between the arcuate guide groove 4a of the swing gear 4 and the projection 6a of the switch plate 6. A predetermined play angle R is generated between the swing gear 4 and the switch plate 6 in the rotation direction of the output lever 3 connected to the locking lever 12 of the door lock device 10. Then, after the swing gear 4 interlocking with the locking lever 12 rotates by the play angle R (the distance of the gap D), the switch plate 6 interlocks with the swing gear 4 to detect a locked or unlocked state. Have been.

Next, the operation and operation of this embodiment will be described in detail. FIG. 4A shows the unlocked state, in which the movable contact 8a of the contact 8 fixed to the switch plate 6 separates from the fixed contact 7a of the printed circuit board 7, and the movable contact 8b contacts the fixed contact 7b. Is closed, and in this state, it is detected that the door is in the unlocked state. When a locking operation is performed by operating the cylinder lock or the lock knob, the locking lever 12 of the door lock device 10 rotates, and thereby the output lever 3 rotates. When the swing gear 4 rotates in conjunction with the output lever 3, FIG.
As shown in (b), only the swing gear 4 rotates during the play angle R, and when the locking lever 12 rotates beyond the play angle R, the arc-shaped guide groove 4a of the swing gear 4 and the switch plate 6 are rotated. The projection 6a engages, the switch plate 6 rotates, and the contact 8 slides on the printed circuit board 7 (FIG. 4C), and the output lever 3 stops at the locking position, that is, locking. When the lever 12 rotates to the locked position, the movable contacts 8a and 8b of the contact 8 fixed to the switch plate 6
Are in contact with the fixed contacts 7a and 7b of the printed circuit board 7, respectively, and the locked state is detected (FIG. 4D). That is, even if the locking lever 12 is slightly rotated by the mounting play between the cylinder lock or the lock knob and the locking lever 12, it is absorbed within the range of the play angle R, so that the switch is locked. Is not detected, and the inconvenience that the actuator malfunctions and locks cannot occur.

When the operation switch in the vehicle compartment is operated in the locking direction in the state shown in FIG. 4A, electric power is supplied to the motor 2 of the actuator 1 for a certain period of time, and the transmission member 5 is rotated via the worm gear 2a. . When the transmission gear 5 rotates and the swing gear 4 meshing with the transmission member 5 rotates, only the swing gear 4 rotates during the play angle R, as shown in FIG. Is rotated by more than this play angle R, the arc-shaped guide groove 4 of the swing gear 4
a is engaged with the projection 6a of the switch plate 6, and the switch plate 6
Rotate, and the contact 8 slides on the printed circuit board 7 (FIG. 4C), and the output lever 3 integrated therewith rotates to stop at the locked position and is fixed to the switch plate 6. Contact 8
Both of the movable contacts 8a and 8b are in contact with the fixed contacts 7a and 7b of the printed circuit board 7, respectively, and the locked state is detected (FIG. 4D). Thus, the locking lever 12 is turned to the locked position. In the figure,
Reference numeral 9 denotes a stopper provided in the case 1a in which the swing gear 4 is brought into contact and the rotation thereof is regulated. The unlocking operation is performed from the locked state of FIG.
Since the operation is the reverse operation to the unlocked state of FIG. 4A through (f), the description is omitted.

[0013]

Since the present invention is constructed as described above, if the switch is displaced by the backlash between the cylinder lock or the lock knob and the locking lever to switch the locked / unlocked state, the actuator is operated undesirably. There is an excellent effect that the problem of locking and unlocking can be reliably prevented.

[Brief description of the drawings]

FIG. 1 is a plan view of a door lock device.

FIG. 2 is a plan view showing the internal structure of an actuator provided with an unlocking detection switch according to the present invention.

FIG. 3 is a cross-sectional view of the actuator.

FIG. 4 is an explanatory diagram showing the operation of the switch mechanism according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Actuator 1a Case 2 Drive motor 2a Worm gear 3 Output lever 4 Swing gear 4a Guide groove 5 Transmission member 6 Switch plate 6a Convex part 6b Projection 7 Printed circuit board 7a Fixed contact 7b Fixed contact 8 Contact 8a Movable contact 8b Movable contact 9 Stopper 10 Door lock device 11 Housing 12 Locking lever 13 Intermediate lever D Clearance R Play angle

Claims (1)

[Claims] 1. A door lock device having an actuator for driving a locking lever to unlock and unlock a locking lever via an output lever, wherein the actuator has an output gear driven by a motor to rotate the output lever, and a movable contact. A switch plate interlocked with the output gear with a predetermined play angle in the direction of rotation thereof, and a fixed contact provided opposite to the movable contact, wherein the movable contact is brought into and out of contact with the fixed contact to unlock. A door lock device for detecting a state.