JPH07119344A - Actuator for vehicle door lock device - Google Patents

Abstract

PURPOSE:To prevent a useless motion of a motor by a mechanical mechanism. CONSTITUTION:Where an engagement projection 11 is formed on an output rotary member 9 which is rotated by a motor 4 and an engagement unit 17, with which the engagement projection 11 is engaged, is formed on an intermediate lever 15 fixed with an output shaft 13, the engagement unit 17 comprises a radial engagement groove 18, which extends in the radial direction from the output shaft 13, and an air-cored groove 19, which expands in the shape of an arc continuously on both sides, centering on the output shaft 13. An engagement piece 12 is formed on the output rotary member 9. When the output rotary member 9 makes one rotary motion from normally to reversely by the motor 4 on the output shaft side 13, the rotary member 9 is engaged with the engagement piece 12, thereby halting the rotary motion of the output rotary member 9. What is more, when the output shaft 13 is rotated by the hand, it moves slidingly with the engagement piece 12, thereby fixing a stopper piece 22, which prevents the rotary motion of the output rotary member 9 in that means time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an actuator for a vehicle door lock device.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 7, a fan-shaped gear A rotated by a motor is axially fixed to an output shaft F in a loosely fitted state, and the fan-shaped gear A has an arc-shaped engagement centered on the output shaft F. A mating groove B is formed, an engaging protrusion D that engages with the engaging groove B is formed at the tip of an intermediate lever C fixed to the output shaft F, and the sector gear A is moved by the elasticity of a spring E. When the motor is held in the neutral position and the motor is energized, the spring E is contracted and rotated to the left or right to push the engagement protrusion D on the inner wall of the engagement groove B to lock the output shaft F via the intermediate lever C. -An actuator for a vehicle door lock device that switches to unlock is known. In FIG. 7, the intermediate lever C is changed to C by manually operating the key or the sill knob in FIG.
Even if it is moved to the position 1, the engagement protrusion D only moves within the engagement groove B of the sector gear A, and the sector gear A does not rotate.
No force is transmitted to the motor side (clutch mechanism during manual operation). However, when the fan-shaped gear A is rotated by the motor, the fan-shaped gear A is rotated against the elastic force of the spring E. Therefore, the elastic force of the spring E becomes the resistance of the motor, and the motor output is reduced accordingly. To do.

On the other hand, the conventionally known actual flat plate 5-52
JP-A-150-150 describes an actuator for a vehicle door lock device that does not use the spring E as shown in FIGS. In this device, when the rotating body b is rotated by the motor a, one of the four engaging protrusions c that are planted in the rotating body b and are arranged at 90 ° intervals engages with the radial engagement groove e of the operating lever d. Then, by rotating the operating lever d to the lock / unlock position, the output shaft g fixed to the operating lever d
In addition, in the manual switching, even if the output shaft g and the operating lever d are rotated by a manual operation, the operating lever d causes an idle swing groove of an arc having the radius of the output shaft g. f is formed. It should be noted that, in the publicly known example, after the switching of lock or unlock is completed, the rotation axis h
Since the engaging projection c that rotates around the center abuts on the inner wall of the empty vibration groove f having an arc with the output shaft g as a radius, the rotation of the motor a is stopped.

[0004]

[Problems to be Solved by the Invention] The above-mentioned publication (FIGS. 8 and 9)
There are as many as four engagement protrusions c, and one engagement protrusion c
When is rotated 90 °, switching of lock or unlock is completed. However, since switching of lock or unlock is completed only by rotating 90 °, the load on the motor is heavier. Therefore, in the present invention, the load applied to the motor is reduced by not completing the switching of the lock or the unlock unless the engaging projection is rotated four times 360 °. As described above, if the lock or unlock switching is not completed unless the engaging protrusion is rotated 360 °, the motor stop mechanism cannot be as shown in FIGS. 8 and 9, and this point is also devised separately. It was done. Further, the structure of the above-mentioned publication (FIGS. 8 and 9) has four engaging projections c, which complicates the structure by that amount, but this point is also improved. Further, in the publication (FIG. 8), the state shown in FIG. 9 is obtained when the switch is not completely switched to the lock position or the unlock position, and in this state, the motor a is energized to rotate the rotating body b to the right. Then, the engagement protrusion c ′ does not engage with the idling groove f and the operating lever d
The operating lever d is rotated by engaging with the side surface of the above, and finally the operating lever d and the rotating body b enter a mechanical lock state and both bite and stop. In such a case, neither the operation by the motor a nor the operation by the key or the sill knob will operate normally.

[0005]

It is an object of the present invention to reduce the load on a motor, simplify the structure, and prevent mechanical lock.

[0006]

According to the present invention, therefore, the output rotary member 9 is fixed to the output rotary member 9 which is rotated about the central shaft 10 by the motor 4 and the output shaft 13 which is parallel to the central shaft 10. 9 and an intermediate lever 15 which partially overlaps with each other and rotates. An engaging projection 11 protruding toward the intermediate lever 15 is provided on the output rotating member 9 on an extension line connecting the output shaft 13 and the central shaft 10. Provided in the intermediate lever 15 is a circular arc vibration groove 19 having a radius from the output shaft 13 to the engaging projection 11 at the position,
A radial engagement groove 18 is formed from the center of the idle vibration groove 19 toward the output shaft 13, and the engagement projection 11 is engaged with the idle vibration groove 19 and the radial engagement groove 18, thereby performing the output rotation. An engaging piece 12 is provided at a position symmetrical to the engaging protrusion 11 of the member 9, and the output shaft 13 is provided with the engaging piece 12 at the position.
This is an actuator for a vehicle door lock device to which a stopper 21 having a stopper piece 22 that is in sliding contact with the inner surface side is fixed. Further, the present invention provides the above,
An actuator for a vehicle door lock device is formed in which arc-shaped corner portions 20a and 20b are formed at the intersections of the radial engagement groove 18 and the idle vibration groove 19. Also,
According to the present invention, in the above, the stopper piece 22 is an arcuate surface centered on the axis of the output shaft 13, and the engagement piece 12 is an arcuate surface having the same radius that engages with the arcuate surface of the stopper piece 22. And an actuator for a vehicle door lock device in which the above is formed. Further, the present invention is the actuator for a vehicle door lock device, wherein the stopper piece 22 is configured to swing to a position intersecting the rotation locus of the engagement piece 12 in the above.

[0007]

An embodiment of the present invention will be described with reference to the drawings.
Reference numeral 1 is a substantially U-shaped front side case, 2 is a rear side case abutting and fixed to the opening surface of the front side case 1, and these are integrally fixed by a plurality of screws 3. Reference numeral 4 denotes a forward / reverse rotation motor fixed to the outer surface of the front case 1, and a drive gear 6 is fixed to a rotation shaft 5 thereof. A large reduction gear 7 is meshed with the drive gear 6. The large reduction gear 7 is integrally formed with a concentric small reduction gear 8.

Reference numeral 9 is an output rotary member that meshes with the small reduction gear 8 to rotate, and the output rotary member 9 of the embodiment is a gear. Reference numeral 10 is a central axis of the output rotary member 9. An engaging projection 11 projecting toward an intermediate lever 15 described later is integrally fixed on an extension line connecting the output shaft 13 described later and the central shaft 10 on the front side outside the output rotary member 9. At a symmetric position on the back side of the output rotation member 9 that is different from the engagement projection 11 by 180 degrees, the upper and lower surfaces are arcuate, the left and right central portions are the thickest in the radial direction, and the overall convex lens shape. The joint piece 12 is integrally fixed. The engaging protrusion 11 and the engaging piece 12 may have either a bulging structure integrated with the output rotating member 9 or a separate fixing structure.

Reference numeral 13 denotes an output shaft in the front-rear direction, which is rotatably mounted above the upper edge of the output rotary member 9 on the upper side of the cases 1 and 2. The output shaft 13 has an output at one end (front side). Fix the lever 14. The output lever 14 is connected to a switching member that switches between two positions, a lock position and an unlock position, such as a lock lever of a vehicle door lock device.

A fan-shaped intermediate lever 15 is fixed to the output shaft 13. The intermediate lever 15 and the output shaft 13 may be integrally formed. Reference numeral 16 is a reinforcing rib. The intermediate lever 15 is disposed in proximity to the front side of the output rotation member 9 so as to overlap with it, and the intermediate lever 15 has a hole-like or groove-like engagement portion with which the engagement protrusion 11 of the output rotation member 9 engages. Form 17. The engaging portion 17 is composed of a radial engaging groove 18 extending in the radial direction with respect to the output shaft 13 and an arcuate idle groove 19 having the output shaft 13 as a center. It is formed in a letter shape.

The empty vibration groove 19 has the above-mentioned position (the position shown in FIG. 2).
Is formed along an arc centered on the output shaft 13 whose radius is the engaging projection 11 and the radial engagement groove 18 extends from the center of the circular empty vibration groove 19 toward the output shaft 13. .
The intermediate lever 15 is displaced in conjunction with the lock lever connected to the output lever 14, and when in the locked position, the engagement protrusion 11 engages with the right end of the idle groove 19 as shown in A of FIG. At the unlocked position, the engagement protrusion 11 is engaged with the left end as shown in C of FIG.

Arc-shaped corner portions 20a and 20b are formed at the intersections of the radial engagement groove 18 and the idle vibration groove 19. The corner portion 20a is an arc centered on the central axis 10 when the intermediate lever 15 is in the lock position, and the corner portion 2a
0b is formed in an arc centered on the central axis 10 when there is an unlock position.

When the motor 4 rotates, the output rotary member 9 rotates via the drive gear 6, the large reduction gear 7, and the small reduction gear 8. When the output rotation member 9 rotates, the engagement protrusion 11 rotates about the shaft 10, and the engagement protrusion 11 at the right end of the idle groove 19 as shown in FIG. 6A passes through one corner portion 20a and radiates. Enter the groove 18 (FIG. 6B). When the engaging projection 11 enters the radial engaging groove 18, the engaging projection 11 and the intermediate lever 1
5 rotates in conjunction with a predetermined amount (Fig. 6D), and then
The engaging protrusion 11 is disengaged from the radial engaging groove 18, passes through the other corner portion 20b, and enters the left end of the idle vibration groove 19 (FIG. 6).
E). Thus, when the output rotation member 9 rotates 360 degrees, the intermediate lever 15 is also displaced between the lock position and the unlock position.

A stopper 2 is provided on the rear side of the output shaft 13.
The upper part of 1 is fixed by key connection or different-diameter shaft engagement. A stopper piece 22 that contacts the engaging piece 12 of the output rotating member 9 is formed on the lower end side of the stopper 21. The stopper piece 22 is formed in an arc centered on the axis of the output shaft 13 and engages with the stopper piece 22.
The inner peripheral surface of 2 is also formed into an arc surface having the same radius. The stopper piece 22 is displaced in association with the output shaft 13, and when in the locked position (FIG. 6A) and the unlocked position (FIG. 6E), the line segment connecting the output shaft 13 and the central shaft 10 is left and right. It is configured to be located on either side.

[0015]

The operation will be described with reference to an example in which the lock lever of the vehicle door lock device is connected to the output lever 14 as described above. As is well known, the lock lever is displaced between the lock position and the unlock position, and when in the lock position, the intermediate lever 15 also moves through the output lever 14 and the output shaft 13 as shown in FIG.
And in the locked position of FIG. 6A.

When the lock lever is switched to the unlocked position by the motor 4, the motor 4 is energized, and the motor shown in FIG.
At, the output rotating member 9 is rotated to the right. Then, the engagement piece 12 of the output rotation member 9 moves in the direction away from the stopper piece 22, and the engagement projection 11 at the lower position of the output rotation member 9 has a right corner from the right end of the idle vibration groove 19 of the intermediate lever 15. It passes through the portion 20a and engages with the radial engagement groove 18 as shown in FIG. 6B. When the engagement protrusion 11 engages with the radial engagement groove 18, the intermediate lever 15 rotates together with the engagement protrusion 11 to the position of FIG. 6D via the state of FIG. 6C. In this state, the intermediate lever 15 and the stopper piece 22 are switched to the unlocked position, and the engaging projection 11 is disengaged from the radial engaging groove 18 and faces the left corner 20b. Therefore, when the output rotation member 9 further rotates to the right, the engagement projection 11 moves from the corner portion 20b to the left end of the idle vibration groove 19 as shown in FIG. 6E without rotating the intermediate lever 15, and rotates 360 ° to stop. In addition, the engagement piece 12 abuts the stopper piece 22 that is waiting at the unlock position. Due to the contact between the engagement piece 12 and the stopper piece 22, the output rotation member 9 cannot be rotated to the right, so that the rotation is stopped.
The power supply to the motor 4 is stopped by timer control or load current control.

Next, the manual switching will be described. When the lock lever is rotated to the unlock position side by manual key operation or sill knob operation, the output shaft 13 rotates counterclockwise in FIG. 5A. At this time, the stopper piece 22 fixed to the output shaft 13 and the engaging piece 12 of the output rotating member 9 are
Since it is an arc surface centered on 3, the stopper piece 2
Since 2 can slide with respect to the engagement piece 12, it does not hinder the rotation of the output shaft 13. Also, the output shaft 13
Is rotated to the left, the intermediate lever 15 is also rotated to the left. However, since the engagement protrusion 11 of the output rotary member 9 is engaged with the arc-shaped idle groove 19 centered on the output shaft 13 of the intermediate lever 15, The rotational force of the intermediate lever 15 is not transmitted to the output rotary member 9 side.

As is well known, the motor 4 is energized by pushing a control switch provided in the driver's seat to the lock side or the unlock side to rotate forward and backward. In the device of the above-mentioned publicly known publication, it becomes an unexpected situation when this control switch is pushed by mischief such as an infant when the lock lever is not in the lock position or the unlock position. On the other hand, in the present invention, while the lock lever is being manually switched, for example, as shown in FIG. 5B, the stopper piece 22 and the engagement piece 12 cause the output shaft 13 and the central shaft 10 to move.
Since it is on the line segment connecting the and, even if an attempt is made to rotate the output rotation member 9 by the motor 4, the engagement piece 12 cannot be disengaged from the engagement with the stopper piece 22, and the output rotation member 9 rotates. It becomes impossible. Therefore, in the present invention, the rotation of the output rotary member 9 by the motor 4 is mechanically prevented when the lock lever is not in the lock position or the unlock position.

[0019]

According to the above-mentioned publication (FIG. 8), there are four engaging projections, and when one engaging projection rotates 90 °, switching between locking and unlocking is completed. However, since switching between locking and unlocking is completed only by rotating 90 °, the load on the motor is heavier. Further, the structure of the above-mentioned publication (FIG. 8) has four engaging projections, which makes the structure complicated accordingly. Further, in the publication (FIG. 8), the state shown in FIG. 9 is obtained when the switch is not completely switched to the lock position or the unlock position, and in this state, the motor a is energized to rotate the rotating body b to the right. Then, the engaging protrusion c ′ engages with the side surface of the actuating lever d without engaging with the idle groove f to rotate the actuating lever d, and finally the actuating lever d and the rotating body b are in a mechanical lock state. Both sides bite and stop. In this case, the motor a
The operation by the key or the key or the sill knob does not operate normally. However, according to the present invention, the output rotating member 9 rotated by the motor 4 about the central shaft 10 is used.
And an intermediate lever 15 which is fixed to an output shaft 13 parallel to the central shaft 10 and partially overlaps with the output rotating member 9 to rotate.
And the intermediate lever 15 on the output rotating member 9 on the extension line connecting the output shaft 13 and the central shaft 10.
The intermediate lever 1 is provided with an engagement protrusion 11 protruding in a direction.
5 is an engaging projection 1 located at the above position from the output shaft 13
An arc-shaped idle groove 19 having a radius of up to 1 is formed, and the radial engagement groove 1 extends from the center of the idle groove 19 toward the output shaft 13.
8 is formed, and the empty vibration groove 19 and the radial engagement groove 18 are formed.
The engaging protrusion 11 is engaged with the engaging member 12, and an engaging piece 12 is provided at a position symmetrical to the engaging protrusion 11 of the output rotating member 9, and the output shaft 13 has an inner surface of the engaging piece 12 at the position. An actuator for a vehicle door lock device, in which a stopper 21 having a stopper piece 22 whose side is in sliding contact is fixed,
The engaging projection 11 is provided on the output rotation member 9 on the extension line connecting the output shaft 13 and the central shaft 10 so as to project toward the intermediate lever 15, and the intermediate lever 15 is located at the position described above from the output shaft 13. A structure in which an arcuate vibration groove 19 having a radius up to the engagement projection 11 is formed, and a structure in which a radial engagement groove 18 is formed from the center of the arcuate vibration groove 19 toward the output shaft 13.
Since the engaging projection 11 is engaged with the idle groove 19 and the radial engaging groove 18, the engaging projection 11 is rotated by 360 ° from FIG. 6A to FIG. The load is reduced, and the motor 4 can be made compact and the others can be enhanced. Moreover, since the engagement protrusion 11 can be implemented by only one, the structure is simplified. Further, according to the present invention, in the above, an actuator for a vehicle door lock device is provided in which arc-shaped corner portions 20a and 20b are formed at the intersections of the radial engagement groove 18 and the idle vibration groove 19. Therefore, the engaging projection 11 smoothly radiates from the idle groove 19
8 can be moved and engaged. Further, according to the present invention, in the above, the stopper piece 22 has an arcuate surface centered on the axis of the output shaft 13, and the engaging piece 12 has the same radius to engage with the arcuate surface of the stopper piece 22. Since this is an actuator for a vehicle door lock device having an arcuate surface, when the intermediate lever 15 (lock lever) is at a midway position, the engagement piece 12 and the stopper piece 22 engage with each other to cause the motor to move. 4 (output rotation member 9) cannot rotate, and therefore, even if the switch of the motor 4 is turned on while the lock lever is being manually changed, an unexpected situation as in the known example is not caused. Absent. Further, according to the present invention, in the above, the stopper piece 22 is an actuator for a vehicle door lock device configured to swing to a position that intersects with the rotation locus of the engagement piece 12. The output rotating member 9 can be reliably stopped at a predetermined position without using any special means.

[Brief description of drawings]

FIG. 1 is a sectional view taken along line I-I of FIG.

FIG. 2 is an overall front view.

FIG. 3 is a front view of a stopper.

FIG. 4 is a rear view of the output rotating member.

FIG. 5 is an explanatory diagram showing manual switching.

FIG. 6 is an explanatory diagram showing switching by a motor.

FIG. 7 is a known example diagram.

FIG. 8 is a known example diagram.

FIG. 9 is a known example diagram.

[Explanation of symbols]

1 ... front side case, 2 ... rear side case, 3 ... screw, 4 ...
Motor, 5 ... Rotating shaft, 6 ... Drive gear, 7 ... Large reduction gear,
8 ... Small reduction gear, 9 ... Output rotating member, 10 ... Central shaft, 1
DESCRIPTION OF SYMBOLS 1 ... Engagement protrusion, 12 ... Engagement piece, 13 ... Output shaft, 14 ... Output lever, 15 ... Intermediate lever, 16 ... Reinforcing rib, 17 ...
Engaging portion, 18 ... Radial engaging groove, 19 ... Empty swing groove, 20 ... Corner portion, 21 ... Stopper, 22 ... Stopper piece.

[Procedure amendment]

[Submission date] January 17, 1994

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] Figure 8

[Correction method] Change

[Correction content]

[Figure 8]

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Correction target item name] Figure 9

[Correction method] Change

[Correction content]

[Figure 9]

Claims (4)

[Claims] 1. An output rotary member 9 rotated by a motor 4 about a central shaft 10, and an intermediate shaft which is fixed to an output shaft 13 parallel to the central shaft 10 and partially overlaps with the output rotary member 9 to rotate. It is composed of a lever 15 and the output shaft 13
And an engaging protrusion 11 protruding toward the intermediate lever 15 on the output rotating member 9 on an extension line connecting the central shaft 10 and the central shaft 10.
The intermediate lever 15 is provided with an arc-shaped idle groove 19 having a radius from the output shaft 13 to the engaging projection 11 at the above position, and the output shaft 13 is provided from the center of the idle groove 19. The radial engagement groove 18 is formed toward the
The engaging projection 11 is engaged with the radial engaging groove 18, and the engaging piece 12 is provided at a position symmetrical to the engaging projection 11 of the output rotating member 9, and the output shaft 13 is at the position. Stopper piece 22 with which the inner surface side of the engagement piece 12 is in sliding contact
An actuator for a vehicle door lock device having a stopper 21 fixed thereto. 2. The radial engagement groove 18 according to claim 1.
And an arc-shaped corner portion 2 at the intersection of
An actuator for a vehicle door lock device in which 0a and 20b are formed. 3. The stopper piece 2 according to claim 1.
An actuator for a vehicle door lock device 2 has an arcuate surface centered on the axis of the output shaft 13, and the engaging piece 12 is formed with an arcuate surface having the same radius to engage with the arcuate surface of the stopper piece 22. . 4. The stopper piece 2 according to claim 3,
Reference numeral 2 is an actuator for a vehicle door lock device configured to swing to a position intersecting the rotation locus of the engagement piece 12.