JP2002201842A - Vehicle door lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle door lock device capable of keeping the door lock state from being released in a simple mechanism by mounting an actuator for turning a lock lever to a lock position and not turning the same to a super- lock position. SOLUTION: This door lock device is formed by a motor 3 rotated normally and in the reverse direction, a cam member 4 turned interlocking with the motor 3 and energized to a neutral position, and a lock lever 5 provided integrally with the cam member 4 and turned through a cam 10. The device is provided with the actuator 1 for driving the motor 3 to rotate, thereby switching to the unlock state, lock state and super-lock state. In the device, the lock lever 5 is freely switched between the unlock position and the lock position through an inner lock knob of the vehicle. The cam 10 is provided with a first cam part 11 for switching the lock lever 5 from the unlock position to the lock position by normal rotation of the motor 3, and a stepped part 14 (regulating part) for regulating the movement to the unlock position of the lock lever 5 turned to the lock position to be switched to the super-lock state by reverse rotation of the lock lever 5.

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 Conventionally, in a door lock device, a motor is driven to rotate a lock lever in the same direction so that an unlock position, a lock position and a super lock position (even when an inner lock knob of a vehicle is operated). There is an actuator provided with an actuator for switching the door lock state to a position where the door cannot be released.

[0003]

However, in the conventional door lock device, when the lock lever is rotated from the unlock position to the lock position, the output shaft of the motor is stopped even when the power supply to the motor is stopped. Rotation may continue due to inertia, which may cause the lock lever to pivot to the super-lock position.

Further, in other vehicle door lock devices, a separate member or a complicated mechanism for swinging or locking the inner lock knob is provided so that the door lock state cannot be released even if the inner lock knob is operated. .

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a door lock device having an actuator that rotates a lock lever to a lock position and does not rotate to a super lock position. And

It is another object of the present invention to provide a vehicle door lock device in which a door lock state cannot be released by a simple mechanism without providing a separate member.

[0007]

As a means for solving the above-mentioned problems, the present invention provides a motor that rotates forward and backward, a cam member that rotates in conjunction with the motor and is urged to a neutral position, A lock lever that rotates through a cam provided integrally with the cam member, and includes an actuator that rotationally drives the motor to switch between an unlocked state, a locked state, and a super locked state, and the lock lever includes: In a door lock device capable of switching between an unlock position and a lock position via an inner lock knob of a vehicle, the cam is rotated forward by rotating the motor to move the lock lever from the unlock position to the lock position. First to switch to the locked state
A cam portion and a regulating portion for regulating the movement of the lock lever rotated to the lock position to the unlock position by rotating the motor in the reverse direction and switching to the super lock state are provided.

In the above-mentioned invention, the first cam portion switches the lock lever from the unlock position to the lock position by turning the motor in the forward direction to bring the lock lever into the locked state. On the other hand, by rotating the motor in the reverse direction, the restricting portion engages with the lock lever rotated to the lock position, restricts the movement of the lock lever to the unlock position, and switches to the super lock state. The rotation direction of the motor for switching the lock lever from the unlock position to the lock position is opposite to the rotation direction of the motor for switching to the super lock state. As a result, even if the power supply to the motor is stopped and the motor rotates excessively due to the inertia of its output shaft and the cam member rotates excessively and overruns, the lock lever rotates from the locked state to the super locked state. Never be. Also, in the super lock state, even if the inner lock knob is operated, the lock lever that has been rotated to the lock position is restricted from moving to the unlock position so as to restrict the movement of the lock lever so that the lock state cannot be released. it can. Further, the switching through the inner lock knob can be restricted by a configuration in which the restricting portion is merely provided on the cam without providing a separate member in the door lock device.

[0009] The cam may be provided with a second cam portion for switching the lock lever rotated to the lock position by rotating the motor in the reverse direction to the unlock position and setting the unlock state.

The cam comprises a cam wall which is displaced in a radial direction of the cam member, and the lock lever engages with the cam wall and rotates through an engagement projection provided integrally with the lock lever. Is preferred.

It is preferable that the restricting portion restricts the movement of the lock lever to the unlock position via the engaging protrusion.

[0012] It is preferable that the restricting portion is formed of a concave portion in which a distal end portion of the engaging projection is fitted to lock the engaging projection.

[0013] It is preferable to provide a pressing means for pressing the lock lever so that the engagement protrusion is fitted into the recess. Thus, the engagement protrusion can be securely fitted into the recess, and the rotation of the lock lever can be restricted.

[0014]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 and 2 show an actuator 1 of a vehicle door lock device according to the present invention. The actuator 1 includes a housing 2, a motor 3, a cam member 4, and a lock lever 5. As shown in FIG. 2, the housing 2 includes a base 2a and a cover 2b, and houses the motor 3, the cam member 4, and the lock lever 5.

The motor 3 is supplied with electric power via a wiring 6 provided in the housing 2 and is rotated forward and backward by a control circuit (not shown) mounted on the vehicle. The motor 3 rotates the cam member 4 forward and reverse via a rotation mechanism 7. The turning mechanism 7 is composed of a worm attached to the drive shaft 3a of the motor 3,
The driving force of the motor 3 is engaged with a worm gear (not shown) formed on the outer periphery of the cam
To tell.

As shown in FIGS. 3A and 3B, the cam member 4 comprises a disk-shaped main body 4a.
The two ends of the concentric rotary shaft 8 are fitted into receiving portions 9a and 9b (shown in FIG. 2) provided on the inner surfaces of the base 2a and the cover 2b so as to face each other.
Are supported rotatably around the center. A concave cam 10 is formed on the upper surface of the main body 4a.
The first concave portion 10a having a substantially semilunar shape, the groove-shaped second concave portion 10b formed to be bent counterclockwise in FIG. 3A from the first concave portion 10a, and the second concave portion 10b An arc-shaped groove-shaped third recess formed around one end of the rotary shaft 8 is formed so as to bend clockwise from one end in FIG. 3A and pass through the outside of the second recess 10b to reach the first recess 10a. 10c.

The side wall surface of the first concave portion 10a of the cam 10 forms a first cam portion 11 for switching the lock lever 5 from the unlock position to the lock position. This first cam portion 1
Reference numeral 1 denotes a concave surface which is continuous from one end of the side wall surface 12 outside the third concave portion 10c to the outer peripheral surface of the rotating shaft 8, and engages with an engaging projection 22 described later to rotate the lock lever 5 in the radial direction. Things. Further, a convex portion 13 continuous from the outer peripheral surface of the rotating shaft 8 between the first concave portion 10a and the second concave portion 10b of the cam 10, and a restricting portion between the first concave portion 10a and one end of the second concave portion 10b. A certain step 14 is formed.

The side wall surface inside the second concave portion 10b of the cam 10 forms a second cam portion 15 for switching the lock lever 5 from the lock position to the unlock position. The second cam portion 15 is formed from the convex portion 13 to the third concave portion 10c.
The lock lever 5 rotates in the radial direction by engaging with the engagement protrusion 22. Further, as shown in FIG. 3C, the bottom surface of the second concave portion 10b is a slope 16a having an upward slope from the step portion 14 at one end to the other end. A step 17 is formed between the other end of the second recess 10b and one end of the third recess 10c. Further, the bottom surface of the third concave portion 10c is
From the other end to the other end.

As shown in FIG. 2, the cam member 4 is urged by a spring 18 provided on the lower surface of the main body 4a. When the driving force is not transmitted from the motor 3, the cam member 4 is shown in FIG. It is returned to the state (neutral position).

The lock lever 5 is shown in FIG.
As shown in (b), the shaft portion 20 and a substantially fan-shaped lock plate 21 are provided. The lock lever 5 is directly connected to an inner lock knob of an external vehicle door lock mechanism (not shown). As shown in FIG. 2, they are fitted into receiving portions 9c and 9d provided on the inner surfaces of the base portion 2a and the cover 2b so as to face each other, and are rotatably supported about the shaft portion 20. . Depending on the angle at which the shaft 20 rotates, the vehicle door lock device can be moved to the unlock position,
The lock position is established. On the outer peripheral edge of the lower surface of the lock plate 21, there is provided a columnar engaging projection 22 projecting in the direction of the cam member 4. Lock lever 5
When the cam member 4 is at the neutral position, the user can freely switch between the unlock position and the lock position by operating the inner lock knob. Also,
As shown in FIG. 2, when the lock lever 5 is mounted on the cam member 4, the lock plate 2
Pressing means 23 is provided for pressing the engaging projection 22 toward the cam member 4 via the first member 1.

The engaging projection 22 is slidably engaged with the first cam portion 11 of the cam member 4 so that the cam member 4
The lock plate 21 is rotated in the clockwise direction by receiving the acting force from the first cam portion 11 by rotating the lock plate 21 in the middle and counterclockwise directions (forward rotation). In addition, the engagement protrusion 22
Is slidably engaged with the second cam portion 15 of the cam member 4 and receives an acting force from the second cam portion 15 when the cam member 4 rotates clockwise (reverse rotation) in FIG. The lock plate 21 is rotated in a counterclockwise direction.

Next, the operation of the vehicle door lock device having the above configuration will be described.

As shown in FIG. 5A, when the vehicle door lock device is in the unlock position, a current is supplied to the motor 3 by the control circuit, and the motor 3 rotates forward.
The cam member 4 rotates counterclockwise. As a result, the engagement protrusion 22 engages with the first cam portion 11 of the cam member 4 to receive the acting force, and the lock lever 5 rotates clockwise while interlocking with the cam member 4, and As shown in (b),
Rotate to lock position. As a result, the door lock device enters the lock position. When the current supply is stopped, the cam member 4 is biased by the spring 18 to move the cam member 4 as shown in FIG.
As shown in (c), it is returned to the neutral position.

As shown in FIG. 6A, when the motor 3 rotates in the reverse direction from the state shown in FIG. 5C, the tip of the engaging projection 22 slides on the bottom surface of the first recess 10a, and the lock lever is rotated. Since 5 is pressed toward the cam member 4 by the pressing means 23, it is engaged with one end of the second concave portion 10b beyond the step portion 14. This switches to the super lock state,
Thereafter, energization of the motor 3 is stopped. In this state, if the user operates the inner lock knob to switch the lock lever 5 to the unlock position, the lock lever 5 cannot rotate in the unlock position direction because the engaging projection 22 abuts on the stepped portion 14. . Thereby, the super lock position state is achieved in the door lock device. When the inner lock knob is strongly operated, the engagement protrusion 22 is rotated counterclockwise around the shaft portion 20, and
On the other hand, since the step portion 14 is rotated clockwise around the rotation shaft 8 in a state where the engagement protrusion 22 is in contact with the step portion 14, the step portion 14 tends to rotate in a direction away from each other. Thereby, the rotation of the lock lever 5 is more firmly restricted.

Further, as shown in FIG. 6 (b), when the motor 3 is rotated in the reverse direction and the cam member 4 rotates clockwise, the engagement projection 22 is moved to the second cam portion 15 of the second recess 10b.
And receive an acting force. As a result, the lock lever 5
Rotates counterclockwise while interlocking with the cam member 4,
Rotate to unlock position. When the supply of electric current is stopped, the cam member 4 is returned to the neutral position by the urging force of the spring 18, and returns to the state shown in FIG. When the cam member 4 returns to the neutral position, the engagement projection 22 moves to the third position.
It slides on the slope 16b of the recess 10c. At this time, the engaging projection 22 does not receive an acting force from the side wall surface 12 outside the third concave portion 10c, and therefore does not rotate in the radial direction. In this way, the door lock device is released from the super lock position state and enters the unlock position state.

[0027]

As is apparent from the above description, according to the present invention, the first cam portion for switching the lock lever from the unlocked position to the locked position by rotating the motor forward by the cam is brought into the locked state. And a regulating portion for regulating the movement of the lock lever rotated to the lock position by rotating the motor in the reverse direction to the unlock position and switching to the super lock state, so that when the lock lever is switched to the lock position, Even if the motor rotates the cam member excessively forward, it does not switch to the super lock state. Further, even if the inner lock knob is operated, the rotation of the lock lever, which has been rotated to the lock position, is prevented from rotating to the unlock position, so that the door lock state cannot be released. Further, it is possible to achieve the super lock position state of the door lock device without providing a separate member to the door lock device,
The number of parts can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view of a vehicle door lock device according to an embodiment of the present invention, with a cover removed showing an actuator.

FIG. 2 is a sectional view taken along line II of FIG. 1;

FIG. 3A is a plan view showing the cam member of FIG. 1;
(B) is a sectional view taken along line II-II of (a). (C)
(A) Sectional drawing in dashed-dotted line III.

FIG. 4A is a plan view showing the lock lever of FIG. 1; (B) is a side view of (a).

FIGS. 5A, 5B, and 5C are plan views showing an example of the operation of the cam member and the lock lever of FIG. 1;

FIGS. 6A and 6B are plan views showing an example of the operation of the cam member and the lock lever of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Actuator 3 Motor 4 Cam member 5 Lock lever 10 Cam 11 1st cam part 14 Step part (restriction part)

Claims (6)

[Claims] A motor that rotates forward and backward, a cam member that rotates in conjunction with the motor and is urged to a neutral position;
A lock lever that rotates through a cam provided integrally with the cam member, and includes an actuator that rotationally drives the motor to switch between an unlocked state, a locked state, and a super locked state, and the lock lever includes:
In a door lock device capable of freely switching between an unlock position and a lock position via an inner lock knob of a vehicle, the cam is rotated forward by rotating the motor to move the lock lever from the unlock position to the lock position. A first cam portion for switching to the lock state, and a restriction for switching the lock lever rotated to the lock position to the unlock position by reversely rotating the motor to switch to the super lock state. A vehicle door lock device comprising a part. 2. The method according to claim 1, wherein the cam is provided with a second cam portion for switching the lock lever rotated to the lock position by rotating the motor in the unlock position to the unlock position and setting the unlock position. The vehicle door lock device according to claim 1, wherein: 3. The cam comprises a cam wall which is displaced in a radial direction of the cam member, and the lock lever is engaged with the cam wall by way of an engagement projection provided integrally with the lock lever. The vehicle door lock device according to claim 1, wherein the vehicle door lock device rotates. 4. The vehicle door lock device according to claim 3, wherein the restricting portion restricts movement of the lock lever to the unlock position via the engagement protrusion. 5. The vehicle door lock device according to claim 4, wherein the restricting portion comprises a concave portion into which a distal end portion of the engaging projection is fitted and which locks the engaging projection. . 6. The vehicle door lock device according to claim 5, further comprising a pressing unit that presses the lock lever so that the engagement protrusion fits into the recess.