JP2828656B2 - Door lock device for automobile - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an automobile door lock device.

(Prior Art) A door lock device includes a base plate fixed to a door, a fork for engaging a striker provided on a vehicle body, an open lever for releasing the engagement between the fork and the striker, and a lock position and an unlock position. It is provided with a link that is movable and slides by operating the outer door handle or the inner door handle, a lock plate that moves the link to a lock position and an unlock position, and the like.

Then, when the link is at the unlock position, if the outer door handle or the inner door handle is operated, the open lever is rotated via the link to open the door. When the link is in the lock position, the open lever does not rotate even if the handle is operated, and the door is not opened.

The lock plate is electrically rotatable by a remote operation from the outside or a switch operation from a driver's seat in addition to a manual operation using an inner lock knob or a cylinder key.

That is, when a segment gear is provided on the lock plate, a pinion connected to a motor is meshed with the segment gear, and when the motor is rotated forward or reverse by the remote control or the switch operation, the lock plate rotates. I have. Further, a clutch mechanism is provided between the motor and the pinion to facilitate the manual operation.

(Problems to be Solved by the Invention) However, the conventional door lock device capable of manual and electric lock and unlock operations has a complicated structure because it requires a gear and a latch mechanism. Further, since the lock plate is in a meshing state with the pinion and resistance is generated at the time of rotation, there is a problem that the operation force at the time of manual operation is heavy.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a door lock apparatus for a vehicle which has a simple structure, has a light operating force at the time of manual locking and unlocking operations, and is easy to operate. .

(Means for Solving the Problems) In order to achieve the above object, a door lock device for an automobile according to the present invention is configured such that a lock plate is rotated to a lock position or an unlock position by a manual operation or an electric operation. A lock plate connected to an inner lock knob and a key cylinder of a door, and provided rotatably at a lock position and an unlock position, and a support shaft. And a drive lever having an engagement recess formed at one end thereof toward the support shaft and contact portions formed on both sides thereof, and a friction member provided by a motor. And a pair of engagement portions that engage with the engagement recesses of the drive lever. After the engaging portion is disengaged by rotating the driving lever while engaging with the engaging concave portion of the driving lever, the other engaging portion is formed to abut on the abutting portion of the driving lever. An output lever is provided.

(Operation) In the present invention, when the output lever is rotated by the motor,
Since the one engagement portion rotates the drive lever while engaging with the engagement recess of the drive lever, the lock plate rotates. When one of the engagement portions of the output lever and the engagement concave portion of the drive lever are no longer engaged, the drive lever stops and the lock plate stops. At the same time, the other engagement portion of the output lever comes into contact with the contact portion of the drive lever, and the rotation of the output lever is prevented.

Even if the output lever rotates in the opposite direction due to the reverse rotation of the motor, the same operation as described above is performed.

On the other hand, when the lock plate is rotated by manual operation using the inner lock knob or the cylinder key of the door, the drive lever that can rotate integrally with the lock plate has its engagement recessed portion disengaged from one engagement portion of the output lever. And, from a state in which one of the abutting portions abuts the other engaging portion of the output lever, the abutting portion rotates in a direction to release the abutting state, and the other abutting portion is in contact with the output lever. It comes into contact with the other engaging portion and stops.

Further, when the engagement portion of the output lever comes into contact with the contact portion of the drive lever, even if the motor overruns, only the drive member slides on the friction member and is driven, so that the impact is reduced.

Even if the output lever is stopped halfway and any of the engagement portions is in the engagement recess of the drive lever, the engagement recess of the drive lever that rotates integrally with the lock plate outputs. An attempt is made to rotate the output lever while engaging with the engaging portion of the lever. At this time, the driving member is not rotated since it is connected to the motor, but the output lever is rotated in sliding contact with the friction member, so that the manual locking or unlocking operation is not hindered.

Next, an embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows a door lock device according to the present invention. Generally, an open operation rod 1, an open operation lever 2, a lock plate 3, a link 4, an open lever 5, a drive lever 6, an output lever 7, and these are attached. And a base plate 8.

One end of the open operation rod 1 is formed in a plate shape and provided with a long hole 9, and the other end is connected to an outer door handle (not shown). The open operation rod 1 can be moved downward in the drawing by operating the outer door handle.

The open operation lever 2 is attached to the base plate 8 by the support shaft 11.
, And is urged clockwise in the figure by a coil spring 12, and has a hole 10 at one end and an inner door handle (not shown) at the other end. The open operation lever 2 rotates counterclockwise in the figure against the urging force of the coil spring 12 by operating an inner door handle (not shown).

The lock plate 3 is attached to the base plate 8 so as to be rotatable integrally with a drive lever 6 described later around a support shaft 13. One end of the lock plate 3 is connected to a key cylinder (not shown) via a key rod 14, and the other end is connected to an inner lock knob (not shown) via an inner rod 15. And this lock plate 3
The lock position in the clockwise direction and the counterclockwise direction are controlled by any of a key operation from the outside, an inner lock knob operation from the inside, and a rotation operation of the output lever 7 by a motor 38 (see FIG. 3) described later. To the unlock position.

The link 4 is a plate-like member having a shoulder 16 at substantially the center, a hole 17 at one end, and a long hole 18 at the other end. In the hole 17 at one end of the link 4, a long hole 9 of the open operation rod 1 and a hole 10 of the open operation lever 2 are superimposed, and a shaft 19 is fitted into these holes. The shaft 20 provided on the lock plate 3 is fitted.

The link 4 slides in the vertical direction in FIG. 1 in conjunction with the open operation rod 1 or the open operation lever 2, and also interlocks with the lock plate 3 in a counterclockwise direction around the shaft 19 in FIG. It is designed to rotate between a locked position in the clockwise direction and an unlocked position in the clockwise direction.

The open lever 5 is attached to the base plate 8 so as to be rotatable around a support shaft 21, and at one end thereof, a protruding piece 22 is provided so as to face the shoulder 16 of the link 4 at the unlocked position. A claw portion (not shown) that engages with a fork (not shown) is provided on the rear surface side of the base plate 8. When the protruding piece 22 of the open lever 5 is pushed by the shoulder 16 of the link 4 at the unlock position,
The open lever 5 rotates counterclockwise in the figure, and the claw (not shown) separates from the fork (not shown).
The engagement between the fork and the striker is released and the door is opened.

The drive lever 6 is attached to the base plate 8 by a support shaft 13 so as to be rotatable integrally with the lock plate 3. A substantially U-shaped engagement recess 23 is formed at one end of the drive lever 6, and a first contact portion 24a and a second contact portion 24b are formed on both sides of the engagement recess 23, respectively. ing. As shown in FIG. 4, the other end of the drive lever 6 has a spring accommodation hole 25 and a roller accommodation recess 26.
Are formed, and a coil spring 27 and a roller 28 are respectively provided.
Is housed.

The roller 28 is made of a columnar conductive material, and is urged by a coil spring 27 in a direction to protrude from the roller housing recess 26. The roller 28 has a V-shaped first action concave portion 30 of a projection 29 protruding from the base plate 8 and the base plate 8 adjacent to the projection 29.
V-shaped second action recess of terminal 33 attached to
It is designed to fit into and lock with 34.

As shown in FIG. 3, the terminal portion 33 has the insulator 31 sandwiched between a pair of fixed contact terminals 32a and 32b. Then, the roller 28 is connected to the second action concave portion 34 of the terminal portion 33.
When it is fitted into the terminal, the conduction between the fixed contact terminals 32a and 32b is conducted via the roller 28, and the lamp provided in the driver's seat (not shown) is turned off.

The output lever 7 is attached to the base plate 8 so as to be rotatable around a support shaft 35. A first engagement portion 37a is formed at one end and a second engagement portion 37b is formed at the other end in a cam shape.
As shown in FIG. 5, the worm wheel 36 is connected to the output lever 7 via a rubber O-ring 40 as a friction member.
Are fitted. And this worm wheel 36,
Meshing with the worm gear 39 provided on the drive shaft of the motor 38,
Rotational torque is transmitted below a certain torque by forward and reverse rotation of the motor 38, and the motor 38 rotates integrally with the output lever 7. When the torque exceeds the certain torque, the motor 38 idles.

As shown in FIGS. 1 and 2, the output lever 7 is in a state in which one of the engagement portions, for example, the second engagement portion 37b is in a non-engagement state with the engagement recess 23 of the drive lever 6. The other end of the first engagement portion 37a is disposed so as to contact the first contact portion 24a of the drive lever 6.

The motor 38 is driven by a wireless remote control device or a driver's seat switch operation. When the fixed contact terminals 32a and 32b are electrically connected, the motor 38 moves the lock plate 3 to the unlock side. Can be rotated only in one direction, and the fixed contact terminals 32a, 32
When b is not conducting, the motor 38 is configured to be rotatable only in the direction in which the lock plate 3 is moved to the lock side.

In the door lock device having the above-described configuration, when the outer door handle is pulled from the unlocked state where the link 4 is in the unlocked position as shown in FIG. Push down link 4 via. At this time, the link 4 is a long hole
Since it is guided by the shaft 20 along 18, it moves in the direction of arrow A in the figure. Then, as a result of the shoulder 16 of the link 4 pushing the projecting piece 22 of the open lever 5, the open lever 5 rotates counterclockwise in the figure. As a result, the not-shown claw portion of the open lever 5 comes off the fork, and the door is opened.

When the inner door handle is pulled, the opening operation lever 2 rotates counterclockwise in the figure and pushes down the link 4 via the shaft 19, so that the door is opened as described above.

Next, the operation when the door is locked and unlocked electrically and manually will be described.

In the unlocked state shown in FIG. 1, when the lock operation is performed by the wireless remote control device or the switch on the driver's seat, the motor 38 (see FIG. 3) is driven, and the worm wheel 36 is rotated via the worm gear 39.
Further, by the rotation of the worm wheel 36, the output lever 7 rotates counterclockwise in FIG. 1 via the O-ring 40.

As a result, the first engagement portion 37 of the lever 7 marked with a white circle
After the side end surface of the drive lever 6 is separated from the first contact portion 24a of the drive lever 6, the second engagement portion 37b marked with a black circle is engaged with the engagement recess 23, and the drive lever 6 is moved clockwise in FIG. Rotate in the direction of rotation. Accordingly, the lock plate 3 rotates clockwise in FIG. 1 integrally with the drive lever 6. At this time, the roller 28 fitted in the first action concave portion 30
Rolls away from the first action recess 30 toward the second action recess 34.

As shown in FIG. 2, when the second engagement portion 37b of the output lever 7 is separated from the engagement recess 23 of the drive lever 6 and becomes non-engaged, the drive lever 6 is not pressed by the output lever 7 and As a result, the lock plate 3 stops at the lock position as a result of the rollers 28 being fitted into the second action concave portions 34.
Then, conduction is established between the fixed contact terminals 32a and 32b, and the motor 38
However, the motor 38 is further rotated by inertia, and the side end surface of the first engagement portion 37a of the output lever 7 contacts the second contact portion 24b of the drive lever 6, Its rotation is blocked.

At this time, even if the rotational force due to inertia still remains in the motor 38, or the motor 38 overruns due to a delay in the cutoff of the energizing circuit of the motor 38, only the worm wheel 36 slides on the O-ring 40. The contact and idle rotation reduce the shock generated at the meshing portion between the worm wheel 36 and the worm gear 39 and the rotating shaft of the motor 38.

Note that the side end surface of the first engagement portion 37a of the output lever 7 contacts the second contact portion 24b of the drive lever 6 to prevent rotation,
As a result, the torque of the motor 38 increases, and a sensor (not shown) may detect the increase in torque and stop driving the motor 38.

When the lock plate 3 rotates clockwise in FIG. 1 as described above, the link 4 rotates about the shaft 19 in the direction of arrow B in the drawing. Therefore, the shoulder 16 of the link 4 is separated from the protruding piece 22 of the open lever 5 and the shoulder 16 does not push the protruding piece 22 even if the outer handle or the inner handle is operated. It is locked.

When the roller 28 is fitted into the second action concave portion 34, the fixed contact terminals 32a and 32b are electrically connected to turn off a lamp (not shown), thereby confirming that the door is locked.

In order to change from the locked state shown in FIG. 2 to the unlocked state shown in FIG. 1, the motor 38 may be reversed. Since the operation in this case is the reverse of the above operation, a detailed description is omitted.

On the other hand, when the lock operation is performed by the inner lock knob or the cylinder key, the lock plate 3 rotates clockwise in FIG. 1 via the inner rod 15 or the key rod 14, and the link 4 rotates in the arrow B direction in the figure. ,
As in the case of the electric operation, the lock state is established.

At this time, the rotation driving lever 6 integrally with the lock plate 3 has its engagement recess 23 formed in the second engagement portion 37 of the output lever 7.
a direction in which the contact state is released from a state in which the first contact part 24a is in contact with the side end surface of the first engagement part 37a of the output lever 7 in a state where the first contact part 24a is disengaged from the output lever 7; The output lever 7 rotates clockwise without sliding contact, and the second contact portion 24b contacts the second engagement portion 37b of the output lever 7 and stops. Thus, the drive lever 6 is connected to the output lever 7
The rotation is completely independent without engaging with and without sliding contact, so that the operation force does not become heavy.

If the output lever 7 is stopped halfway during the electric operation, one of the engaging portions, for example, as shown by a two-dot chain line in FIG. Of the drive lever 6 that rotates integrally with the lock plate 3, the engagement recess 23 of the drive lever 6 is engaged with the second engagement portion 37 b of the output lever 7. To rotate. At this time, the worm wheel 36 does not rotate because it is meshed with the worm gear 39, but the output lever 7 slides on the O-ring 40 and rotates. Therefore, even if the output lever 7 is stopped halfway, a manual locking or unlocking operation is not hindered, and the operation can be performed smoothly.

Further, in order to change the state from the locked state to the unlocked state, the operation can be performed in the opposite manner by the inner lock knob or the cylinder key, and the operation can be performed with a light force as described above.

In the above embodiment, the O-ring is used as the friction member. However, the present invention is not limited to this, and a disc spring or the like may be interposed between the worm wheel and the output lever.

(Effects of the Invention) As is apparent from the above description, according to the present invention, the drive lever that rotates integrally with the lock plate is completely disengaged with the output lever during manual locking and unlocking operations. Since it rotates in an independent state, a clutch mechanism or the like is not required, the structure is simple, and the operation force is light and easy to operate.

Even if the output lever is engaged with the drive lever, the drive lever rotates only the output lever in sliding contact with the friction member while engaging with the output lever. Is not disturbed.

Further, even after the engagement portion of the output lever comes into contact with the contact portion of the drive lever and stops, the drive member slides on the friction member and rotates, so that the impact when the output lever stops can be reduced. Has an effect.

[Brief description of the drawings]

1 and 2 are a front view of an unlocked state of the door lock device according to the present invention, a partial front view of the locked state,
FIG. 3 is a perspective view of a lock plate drive mechanism, FIG. 4 is a partial cross-sectional view of a drive lever, and FIG. 5 is a cross-sectional view of an output lever and a worm wheel. DESCRIPTION OF SYMBOLS 3 ... Lock plate, 6 ... Drive lever, 7 ... Output lever, 23 ... Engaging recess, 24a, 24b ... First and second contact parts, 36 ... Worm wheel (drive member), 37a, 37b ... First, Second engaging portion, 38 ... motor, 40 ... O-ring (friction member).

Claims (1)

(57) [Claims] 1. A door lock device for a vehicle, wherein a door is locked or unlocked by rotating a lock plate to a lock position or an unlock position by manual operation or electric operation. A lock plate connected to a key cylinder of the door and rotatably provided at a lock position and an unlock position; and a rotatable shaft integrally provided with the lock plate by a support shaft. A driving lever having an engaging recess formed on the opposite side thereof and contact portions formed on both sides thereof; and a pair of engaging members provided rotatably via a friction member by a motor and engaging with the engaging recess of the driving lever. An engaging portion is formed, and one of the engaging portions is engaged with the engaging concave portion of the driving lever, and the driving lever is rotated to be in a non-engaged state. After the automotive door lock device being characterized in that an output lever other engagement portion is formed so as to contact the contact portion of the drive lever.