JPH01287384A - Actuator mechanism of locking device - Google Patents

Abstract

PURPOSE:To provide a gear transmitter mechanism and a lock lever adjacently by a method in which the circular arc-shaped long hole of a rotator is coupled with the coupling pin of a rotary lever, and the rotary part is always restored to a neutral turning position by an elastic returning means. CONSTITUTION:When a motor M is operated to one or the other direction, a worm 14 serves to turn a worm wheel 6 as a rotator part to one or the other direction against an elastic returning means 17 through gears 15 and 16, where the longitudinal end wall of the hole 8 comes into contact with a coupling pin 12 to push it to any direction. A rotary lever 7 turns in the same direction and a lock lever 2 integrated with the lever 7 is turned from one of locking and unlocking positions to the other. When the driving force of the motor M is interrupted, the wheel 6 is restored to neutral turning position by the means 17.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an actuator mechanism for rotating a lock lever in a locking device for an automobile door or the like.

(Prior Art) In a door lock device that has a manually operable lock lever that can take the lock position where the lock device is in the locked state and the unlock position where the lock device is in the unlock state, the lock lever is operated by a motor via a gear transmission mechanism. There is a known actuator mechanism that drives the
-30317).

In this type of locking device actuator mechanism, the rotation of the lock lever by the motor is performed from the motor through a gear transmission mechanism, but the gear transmission mechanism is used so that the lock lever can be rotated manually without relying on the power of the motor. A connecting rod is provided to connect the transmission mechanism and the lock lever, a long hole is provided in the connecting rod, and a pin at the tip of the lock lever is engaged with this long hole, so that the movement of the lock lever side is directed toward the gear transmission mechanism side. It is no longer transmitted.

(Problem 8 to be Solved by the Invention) However, in this known actuator mechanism, the gear transmission mechanism and the lock lever must be connected via a connecting rod, so the gear transmission mechanism and the lock lever must be closely connected. There are problems in that it is difficult to install, the actuator mechanism becomes large overall, and it is not suitable for applications that must be installed within a fixed space.

The present invention was made to solve such problems, and its purpose is to provide a gear transmission mechanism and a lock lever in close proximity to each other, thereby reducing the overall size and size of the device.
It is an object of the present invention to provide an actuator mechanism for a locking device that has a compact form and a simple structure.

(Means for Solving the Problems) The present invention provides an actuator mechanism of the type described above, in which a rotating lever is provided so as to rotate integrally with the lock lever, and an engagement pin is provided protruding from the rotating lever, A rotating member having an arcuate elongated hole that is formed along the rotation locus of the engaging pin as the rotating lever rotates and engages with the engaging pin is provided in parallel with the rotating lever, and the rotating member is connected to a reversible motor via a power transmission mechanism, so that the reversible motor can rotationally drive the lock lever via the power transmission mechanism,
An elastic return that elastically returns the rotating member to a neutral rotating position such that the two end positions of the engagement pin corresponding to the locked and unlocked positions of the lock lever are the opposite end positions of the arcuate elongated hole. It is characterized by having a means.

(Function) In the present invention, when the lock lever is manually rotated, the arc-shaped elongated hole of the cooperating member covers the two end positions of the engagement pin corresponding to the locked position and unlocked position of the lock lever, respectively. Since the rotating member is returned to its neutral position by the elastic return means as shown in FIG.
The engagement pin of the rotary lever that rotates with the lock lever moves only within the circular arc-shaped elongated hole, and the rotation of the lock lever does not affect the motor side that includes the rotary member.

(Example) Hereinafter, the present invention will be described in detail with reference to the drawings.

In FIG. 1, a lock lever 2 is supported around a shaft 3 so as to be rotatable in the direction indicated by arrow A. The lock lever 2 has both ends 2a, 2b and an engaging piece 2c,
When a manual operating force is applied to either end 2a or 2b, the lock lever 2 rotates around the shaft 3 between the lock position and the unlock position, and in the lock position, the lock lever 2 rotates around the shaft 3 between the lock position and the unlock position. is locked via a mechanism to be described later that engages with the engagement piece 2C. Furthermore, in the unlocked position, the locking device assumes the unlocked state via the same mechanism.

As shown in FIG. 2, the shaft 3 is fitted into a shaft support 4a protruding from the case 4 of the locking device, and a worm wheel 6 and a rotary lever 7 are provided on the outer periphery of the shaft 3.
A boss portion 7a is rotatably fitted. As shown in FIG. 3, the worm wheel 6 has teeth 6a, an arc-shaped elongated hole 8, and a hole 6b, and the shaft 3 is loosely fitted into the hole 6b.

The rotary lever 7 has an irregular cross section 7b on its boss 7a, and the irregular hole 2e of the lock lever 2 is fitted into the irregular cross section 7b, and then the washer '9 is fitted onto the tip 3a of the shaft 3. , the tip portion 3a is caulked.

A back plate 10 is attached to the case 4, and a seal 11 is formed between the hole of the back plate 10 and the rotary lever boss portion 7a.

An engagement pin 12 is provided protruding from the rear surface of the tip of the rotating lever 7, and this engagement pin 12 is engaged in the arc-shaped elongated hole 8. The arcuate elongated hole 8 is formed along the locus of movement of the engagement pin 12, that is, along an arc centered on the shaft 3. The rotating lever 7 is parallel to the worm wheel 6.

A worm 14 is engaged with the teeth 6a of the worm wheel 6, and the worm 14 is connected to a gear 15. gear 1
5 meshes with a gear 16 on the output shaft of the reversible motor M. The worm 14 and gears 15 and 16 constitute a power transmission mechanism.

As shown in FIGS. 2 and 2a, between the case 4 and the worm wheel 6, which form a fixed part, an elastic return means 17 is interposed, which is a coil spring that extends along an arc partially surrounding the shaft support 4a. As a result, the worm wheel 6
is returned to a certain neutral rotational position with respect to the case 4.

The longitudinal direction of the coil spring 17 extending in an arc shape (arc direction)
As shown in FIG. 2a, which is a cross section along
On the other hand, a pair of protrusions 6a, 6a are provided on the opposing surface of the worm wheel 6, spaced apart in the direction of the circular arc, and both protrusions 4a.

A coil spring 17 is interposed between 6b. In FIG. 2a, when the worm wheel 6 is moved, for example, to the left (one direction of rotation), the left end of the coil spring 17 is in contact with the left protrusion 4a and applies a compressive force by the right protrusion 6b. received and compressed. When the force on the worm wheel is removed, the force of the coil spring 17 returns the worm wheel to the neutral rotational position shown. This effect is obtained similarly in the case of movement in the opposite direction. This neutral rotation position is set as shown in FIG.

That is, the rotary lever 7 and the engagement pin 12 are rotatable between the solid line and the imaginary line positions in FIG.
In the neutral rotation position, which corresponds to the locked position, the arcuate elongated hole 8 occupies a range that includes the two end positions of the engagement pin 12. In addition, the elastic return means 17
can take any form other than those described above.

FIG. 5 shows an example of an automobile door lock device equipped with the above-described actuator mechanism. The door locking device is generally designated by the numeral 20. As is well known, a striker S on the vehicle body side relatively enters into the main body 21 of the door lock device 20 as shown by an arrow C. The lock lever 2 is pivotally mounted to the main body 21 at the illustrated position.

f? As shown in FIG. 56, the lock lever 2 has an arcuate elongated hole 22 around the rotation center of the lock lever at its large end 2b. On the other hand, on the outer surface of lock lever 2,
An arm 23 whose proximal end is pivotally connected concentrically thereto is provided, and a pin 24 on the distal end side of this arm 23 engages with the elongated hole 22 as shown in FIG.

On the other hand, a release lever 25 is pivotally mounted on the outer surface of the lock device main body 21 by a shaft 26. Release lever 2
5 is always biased counterclockwise by a spring 27, and its counterclockwise rotation is restricted by a stopper 28. A link 31 is attached to one end of the release lever 25 by a pin 29.
One end is pivoted. As shown in FIG. 6, the free end of the link 31 is formed with an abutment surface 32 and an elongated hole 33 in the longitudinal direction. As shown in FIG. 5, the engaging piece 2C having the retaining piece 2d attached to the elongated hole 33 is slidably engaged.

The actuator device shown in FIG.
It is installed in the main body 21 at the position shown in FIG. The actuator device is installed as shown in the case 4 of the lock device, and the above-mentioned back plate 10 is installed to cover it.
are secured by screws 6 as shown in FIG.

As shown in FIG. 7, inside the locking device main body 21,
A latch L that engages with the striker S is rotatably installed around a shaft 35, and an engagement recess 36 of this latch L is
In the illustrated latching position, the striker S is restrained. Also, in the illustrated latching position, the latch L is
Rotation in the striker release direction (clockwise in the figure) is prevented by engagement with a ratchet R pivotally connected by 7. When the ratchet R is rotated in the clockwise direction indicated by the arrow in the figure and disengaged from the latch L, the latch is allowed to rotate in the striker release direction and is disengaged from the striker. The ratchet R has an abutting protrusion 43 that stands up.

On the outside of the ratchet R, there is an intermediate bar 39 shown in FIG.
is attached to the main body 21 by a shaft 40. The intermediate lever 39 has a long hole 45 with which the abutment projection 43 engages and a stopper projection 44 .

The abutting protrusion 43 and the stopper protrusion 44 are connected to the link 3.
5, and in the unlocked state shown in FIG. 5, the abutment protrusion 43 faces the abutment surface 32 of the link 31. In this unlocked state, the lock lever 2 is in the unlocked position shown.

To force lock lever 2 to take this position manually,
For example, a force in the direction indicated by arrow E is applied to the tip of the arm 23 by a known force transmission mechanism (not shown). As a result, the pin 24 of the arm 23 engages with the end of the elongated hole 22 and rotates the lock lever 2 clockwise toward the illustrated position.

In this unlocked state, when a force is applied to one end of the release lever 25 as shown by arrow F in FIG. Rotate in the direction of the arrow against the
Link 31 is displaced downward in the figure. This results in
Since the contact surface 32 of the link pushes the contact protrusion 43 downward in the figure, the three intermediate levers and ratchet R shown in FIG.
rotates clockwise, and the latch L is opened. When the force F disappears, the link 31 and the release lever 25 return to their original positions by the force of the spring 27.

As described above, when the lock lever 2 is in the unlocked position, the door can be opened and closed by manually rotating the release lever 25 from inside and outside the door.

To manually lock the locking device so that the door cannot be opened or closed, force is applied to the end of the arm 23 in the direction of arrow G to move the arm 23 counterclockwise, as shown in FIG. The lock lever 2 is rotated counterclockwise to the lock position shown in the figure. As a result, the link 31 engaged with the engagement piece 2c rotates clockwise around the pin 29, and its rotation is limited by the contact of the link protrusion 31a with the stopper protrusion 44.

In this state, if you try to release the locking device by applying force to the release lever 25 in the direction of arrow F in FIG. 8, the link 3
Since the abutting surface 32 of 1 no longer faces the abutting protrusion 43, even if the release lever 25 rotates as shown in FIG. The abutment surface 32 does not act on the abutment protrusion 43 by simply sliding against it. Therefore, the ratchet R cannot rotate and the locking device cannot be released.

The above-mentioned effects are those when the locking device is operated manually, but the case where the locking device is operated by power using the actuator mechanism according to the present invention will be described below.

1 and 7, when the motor M is energized in one direction or the other direction, the worm 14 rotates the worm wheel 6 as a rotating member in one direction or the other direction via the gear 15.16. As a result, the longitudinal end wall of the circular arc-shaped elongated hole 8 comes into contact with the engagement pin 12 and presses the engagement pin 12 in either direction, and the rotation lever 7 rotates in the same direction, and the rotation lever 7 rotates in the same direction. The lock lever 2 is rotated from one of the lock position and the unlock position to the other.

The above-mentioned rotation of the worm wheel 6 is performed against the force of the elastic return means 17 in any direction.

For example, when the worm wheel 6 is rotated in the direction of arrow B by the motor M with the rotation lever 7 located at the solid line position in FIG. 4, the engagement pin 12 is pushed clockwise from the right position in the figure. and reach the left position. When the driving force of the motor M is cut off, the worm wheel 6 is returned counterclockwise by the elastic return means 17 and returned to the position shown in FIG. It will be located near the edge. The same holds true for rotation in the opposite direction, and when the worm wheel 6 is returned to the neutral rotation position, the engagement pin 12 moves from a position near the left end of the elongated hole 8 to a position near the right end.

In addition, in order for the worm wheel 6 to return to the neutral rotation position by the elastic return means 17 after displacing the engagement pin 12 in this way, the power transmission upstream including the worm 14 must be performed during the return process. You will have to rotate the mechanism in the opposite direction, but this is due to the worm wheel's i6a
This is made possible by designing the teeth of the worm 14 to have a large angle.

As described above, the lock lever 2 can be rotated by the actuator mechanism using the motor, but after rotation, the worm wheel 6 is always returned to the neutral rotation position, so the lock lever 2 can be rotated manually as described above. When rotating the lock lever, the rotation pin 12 simply moves within the range of the elongated hole 8, without affecting the upstream power transmission mechanism, and the lock lever can be easily operated manually. .

(Effects of the Invention) As described above, in the present invention, not only is it possible to easily rotate the lock lever using power, but also the rotating member is always returned to the neutral rotation position by the elastic return means. When operating the lock lever, the lock lever can be operated with a light force, and by providing an arc-shaped long hole in the rotating member itself and engaging the engagement pin of the rotating lever, the gear transmission mechanism and the lock lever can be easily operated. Therefore, the overall mechanism is small, compact, and simple, and favorable effects can be obtained in terms of installation.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the actuator mechanism of the present invention, Fig. 2 is a longitudinal sectional view, Fig. 2a is a longitudinal sectional view of a part of Fig. 2, and Fig. 3 is an exploded perspective view. , FIG. 4 is a plan view of the main parts, FIG. 5 is a +i side view of the door lock device equipped with the actuator mechanism of the present invention, and FIG.
7 is an explanatory diagram of the internal mechanism of the door lock device shown in FIG. 5, FIG. 8 is a diagram showing the locked state of the door lock device shown in FIG. 5, FIG. The figure shows a state in which the release lever is operated in the state shown in FIG. 8. 2...Lock lever 12...Engagement piece, 3...Shaft,
4... Case (fixed part), 6... Worm wheel, 7... Rotating lever, 8... Arc-shaped long hole, 10...
...Back plate, 12...Engagement pin, 14...
Worm, 15.16... Reduction mechanism, M... Motor, 17... Elastic return means, 20... Door lock device, 25... Release lever, 31... Link, L.
... Latch, R... Ratchet, S... Striker, 39... Relay lever, 43... Contact projection, 44...
...Stopper protrusion. Applicant's agent Sato-O No. 13 Figure 2a Name 5 Figure θ Figure 7 Condolences 7th Figure 6

Claims (1)

[Claims] An actuator mechanism for rotating a lock lever in a lock device having a lock lever that can be manually displaced to either a lock position for locking the lock device or an unlock position for unlocking the lock device, the actuator mechanism for rotating the lock lever. A rotating lever is provided so as to rotate integrally with the lever, and an engaging pin is provided protruding from the rotating lever, and the engaging pin is formed along a rotation trajectory of the engaging pin as the rotating lever rotates. A rotating member having an arcuate long hole that engages with the engagement pin is provided in parallel with the rotating lever, and the rotating member is connected to a reversible motor via a power transmission mechanism to transmit power by the reversible motor. Neutral rotation so that the lock lever can be rotationally driven via a mechanism, and the two end positions of the engagement pin corresponding to the locked and unlocked positions of the lock lever become both end positions of the circular arc-shaped elongated hole. An actuator mechanism for a locking device, comprising an elastic return means for elastically returning the rotating member to a position.