JPH0516365Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a drive device for a vehicle door lock, which is attached to an automobile door.

(Prior Art) As described in Japanese Patent Application Laid-Open No. 59-109678, a device of this type is provided with a locking lever that can freely swing between a locking position and an unlocking position on the main body of the locking device, and one end of the locking lever is provided on the main body of the locking device. It is known that an actuating lever, which is pivotally supported, is pivotally supported by a case in the middle thereof, and the other end is connected via a cam to a rotating member that is reciprocated by power.

(Problem to be solved by the invention) However, in such a device, the cam is formed with a spiral cam groove formed on one surface of the rotating member, and the follower provided on the operating lever is fitted into the cam groove. Because they are inserted and engaged, the stroke amount of the operating lever is determined by the width of the cam groove in the rotating member and cannot be larger than the radius of the rotating member, and the follower slides on the inner wall of the cam groove. Therefore, there were problems such as the need to increase the rotational torque of the rotating member.

(Means for Solving the Problems) The present invention aims to solve these problems, and includes a locking lever that is swingable between a locking position and an unlocking position on the main body of the locking device.
A driving device for a vehicle door lock, in which one end of the operating lever is pivotally supported on the locking lever, the middle of the operating lever is pivotally supported on the case, and the other end is connected to a rotating member that is reciprocated by power via a cam. In the actuating lever, a cam having a pair of left and right points of action centered around a pivot point with the case of the lever is formed, and a radial protrusion that mutually abuts the points of action of the cam is rotated. A semicircular groove is provided on one surface of the rotating member, and a semi-circular groove into which a coiled return spring is inserted is provided on the other surface of the rotating member, extending left and right around the protrusion, and continuous with the groove. A semi-circular guide groove is provided, and a pair of stoppers that protrude from the case and support the ends of the spring are fitted into the guide groove.

(Embodiment) An embodiment of the present invention will be described below based on the drawings. Reference numeral 1 indicates a lock device body, and inside the body 1 there is a latch that engages with a striker on the body side of an automobile (not shown), and a latch that engages with a striker on the body side of an automobile (not shown). A known member such as a ratchet that engages and prevents rotation is provided, and a release lever that disengages the ratchet is pivotally supported on the back of the main body 1, and one end of the release lever is connected to the out handle. The other end is connected to an inner handle, and when each handle is operated, the release lever swings, releasing the latch engagement of the ratchet, releasing the striker, and opening the door. In addition, the door is locked by a known method using a locking lever 2 interposed between the release lever and the ratchet.If the locking operation is performed using a cylinder lock or a lock knob inside the room, the ratchet will not operate even if you pull each handle, and the door will remain locked. I try to maintain this. The similar locking lever 2 is also pivotally supported on the back of the main body, one end of which is connected via a rod to a lock knob inside the room, the other end is connected to a cylinder lock provided on the outside door, and a lock is provided at the center of the lever. The operating lever 3 of the actuator attached to the device is connected, and the operating lever 3 is divided into a first lever 5 outside the case 4 and a second lever 6 inside the case 4, and the second lever 6 is shown in FIG. As shown in
A support shaft 7 is provided protrudingly from the end of one side, and the second lever 6 is pivotally supported within the case 4 via the support shaft 7. A non-circular shape is formed on the protrusion of the support shaft 7 outside the case 4. A non-circular engagement concave portion 8 is provided in the first lever 5 at the engagement shaft portion 7a, and includes an engagement shaft portion 7a and a truncated conical pointed portion 7b protruding from the tip of the end portion 7a. At the same time, the pointed head 7b is press-fitted into the shaft hole 9 provided in the first lever 5, and furthermore, the second lever 6 has a head protruding from the support shaft 7, and a shaft hole 9 formed in the first lever 5, and A substantially disc-shaped body opening an arc-shaped insertion hole 10, and a case 4.
The leg part has a rotation restriction piece 12 that comes into contact with a pair of left and right barrier walls 11, 11 provided on the inner wall of the
There are stepped action points 1 on both sides of the insertion hole 10 across the
forming a cam 14 having 3 and 13;
A protrusion 1 that is fitted into and comes into contact with the points of action 13, 13
5 is superimposed on the back surface of the second lever 6, and a support shaft 17 of the rotary member 16 is arranged to protrude in the radial direction.
is inserted into the insertion hole 10, and the rotating member 16 is connected to the rotating shaft 18 of the motor 18 provided in the case 4.
a and a reduction gear 18b, and furthermore, the rotating member 16 has a first semicircular groove 20 on its back surface into which a coiled return spring 19 is inserted, and a pair of stoppers 21 protruding from the inner wall of the case 6. The second semicircular groove 22 to be inserted is continuously provided, and thus the rotating member 16
When the return spring 19 is rotated, the end of the return spring 19 in the rotation direction is held by the stopper 21 and compressed, and upon release of the compressive force, the rotation member 16 moves the return spring 1
9 returns to the neutral position, and the protrusion 15 is returned by the amount of rotation, and is positioned at an intermediate position between the two partition walls 11, 11. At this position, the support of the rotating member 16 is placed on the radial axis of the protrusion 15. The shaft 17 and the support shaft 7 of the operating lever 3 are aligned.

Next, the operation will be explained based on Fig. 4.
As shown in Figure a, when the locking lever 2 is in the locked position, the rotation regulating piece 12 of the operating lever 3 comes into contact with the partition wall 11 on the left side of the case 4, and the return spring 19 of the rotating member 16 is in an uncompressed state. The protrusion 15 is in contact with the point of action 13 on the right side of the operating lever 3 at an intermediate position between the two partition walls 11, 11. When the motor 18 is driven to the unlock side in this state, the rotating member 16 rotates counterclockwise as shown in FIG.
3 is pushed up and the operating lever 3 is rotated by its rotation regulating piece 12.
is rotated until it contacts the barrier wall 11 on the right side of the case, swinging the locking lever 2 to the unlocking position,
During this time, the return spring 19 is inserted into the second semicircular groove 2 from the case side.
One end of the stopper 21 is held by a stopper 21 that protrudes into the interior of the rotary member 16, so as the rotating member 16 rotates, the other end is pushed in and compressed by the end wall of the wide first semicircular groove 20, stopping the motor. At the same time, the rotating member 16
As shown in Figure c, the operating lever 3 returns to the neutral position while remaining in that position due to the action of the return spring 19, and its protrusion 15 comes into contact with the left action point 13,
And it is positioned at an intermediate position between the barrier walls 11 and 11. When the motor 18 is driven from this state to the lock side, the rotating member 16 rotates clockwise as shown in FIG. The locking lever 2 is swung to the locked position by rotating the lever 2 until the piece 12 comes into contact with the partition wall 11 on the left side of the case, and then, at the same time as the motor 18 stops, the rotating member 16 returns to the state shown in FIG.

By the way, the driver does not know whether the locking lever of the locking device for each door is in the locked or unlocked position. In case of malfunction such as driving, the rotating member 1
6 simply rotates from the state shown in FIG. The movement restriction piece 12 is attached to the left side wall 11 on the case side.
Since the actuating lever 3 is in contact with the rotating member 1, the operating lever 3 does not swing any more and the rotating member 1 stops driving the motor.
6 is returned to its original position by the return spring, and troubles caused by malfunction can be prevented.

In addition, the locking lever swings by manual operation,
The rotation regulating piece 12 of the operating lever 3, which is connected to the locking lever and swings, is connected to the locking lever as shown in figures a to c when changing from locking to unlocking, and as shown in figures c to a when changing from unlocking to locking. The operating lever 3 is in contact with the barrier wall 11 on the opposite side to the swinging direction, and the protrusion 15 of the rotating member 16 is also in contact with the point of action 13 on the opposite side to the swinging direction.
can swing freely from unlocking to locking and from locking to unlocking.

(Effect of the invention) In this way, when the invention is applied, the operating lever 3
, a cam 1 having a pair of left and right action points 13, 13 centered on the pivot point 7 of the lever 3 with respect to the case 4;
4, and a radial protrusion 15 that abuts the points of action 13, 13 of the cam 14 is provided on one surface of the rotating member 16.
The gap between the pivot point 7 of the cam 14 and the points of action 13, 13 of the cam 14 is larger than the radius of the rotating member 16, and the operating lever 3 can obtain a large output with a small force. It is possible to reduce the size of the cam 14, and since the points of action 13, 13 of the cam 14 are pushed up by the protrusions 15, the sliding resistance of the cam is reduced and the cam can operate smoothly. A semicircular groove 20 into which the case 4 is inserted is provided extending left and right around the protrusion 15, and a semicircular guide groove 22 is provided continuously to the groove 20, and the case 4 is inserted into the guide groove 22. A pair of stoppers 21 protruding from the spring 19 and supporting the ends of the spring 19 are inserted into the rotating member 1.
6 is connected to the center of rotation 1 of the rotating member 16 by means of a return spring 19, so that the protrusion 15 is in the locked position and the unlocked position.
7 and the pivot point 7 of the case 4 of the actuating arm 3, and is held in contact with the point of action 13 of one of the cams, so that the rotating member 16
The actuating lever 3 is immediately swung by the rotation of the actuating lever 3, and furthermore, even if the motor is re-driven to the lock side in the lock position, the rotating member 16 only rotates in vain and does not actuate the actuating lever 3, so this is due to malfunction of the motor. It has the effect of preventing damage.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a partially cutaway front view of the lock device body, Fig. 2 is a rear view, Fig. 3 is an exploded perspective view of the main parts, and Fig. 4 shows the operation. The explanatory diagram, FIG. 5, is a front view of the main part. 1...Lock device body, 2...Lock lever, 3
...Operating lever, 4...Case, 7...Spindle, 1
3...Point of action, 14...Cam, 15...Protrusion, 1
6... Rotating member, 19... Return spring.

Claims (1)

[Scope of utility model registration request] The locking device body is provided with a locking lever that can freely swing between a locking position and an unlocking position, one end of the operating lever is pivotally supported on the locking lever, the middle of the operating lever is pivotally supported on the case, and the other end is pivotally supported on the locking lever. In a drive device for a vehicle door lock connected to a rotating member that reciprocates by power via a cam, the actuation lever is provided with a cam having a pair of left and right action points centered on an axis of the lever with the case. At the same time, a radial protrusion is provided on one surface of the rotating member that contacts the points of action of the cam, and a semicircular groove in which a coiled return spring is inserted is provided on the other surface of the rotating member. A pair of semi-circular guide grooves are provided extending left and right around the protrusion and are continuous with the concave groove, and the guide grooves protrude from the case to support the ends of the spring. A drive device for a vehicle door lock, characterized in that a stopper is fitted therein.