JPH058308B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a door lock actuator that uses a motor to lock or unlock a door lock device used in an automobile door.

BACKGROUND ART Actuators for driving door lock devices of automobiles by remote control from the driver's seat include those that utilize solenoids and those that utilize small direct current motors. When attempting to automatically lock unlocked doors by detecting the vehicle speed after the car has started, the solenoid-based system produces a loud impact noise, so a door lock actuator with low operating noise is desired. was.

On the other hand, the method using a DC motor has the advantage of being relatively compact and inexpensive, and also has the advantage of low operating noise because the door lock device is operated by decelerating the high speed rotation of the motor. However, when operated manually, the motor becomes a load and requires a large operating force, and the reduction gear is always limited to a gear device that can transmit data in both directions, and there are limits to overall miniaturization. It was hot.

Problems to be Solved by the Invention The present invention focuses on the above-mentioned points, and uses a motor drive system with low operating noise, which allows easy manual operation, and regardless of the position of the manually operated lock knob. The object of the present invention is to provide a door lock actuator that can be moved freely to the lock or unlock position by remote control, and that takes advantage of the advantages of a motor type, which is simple in structure and easy to downsize. did.

By providing a missing mechanism that can cancel transmission between the motor, speed reducer, and output shaft, a door lock actuator is constructed that facilitates manual operation and does not interfere with remote control. .

Means for Solving the Problems In order to achieve the above object, the present invention provides an output gear having at least one drive protrusion on the inner surface of the peripheral wall and driven by a motor via a reduction gear mechanism on the output shaft. A passive plate, which is rotatably provided on the output shaft and has a pair of engaging protrusions facing each other, is provided facing the output gear and fixed to the output shaft, and a fixed arc-shaped clutch guide portion centered on the output shaft is provided. a clutch lever having a driven end engageable with the drive projection and an abutment sensing end relative to the clutch guide; The driven end is configured to be loosely fitted to the output shaft so that when the abutment sensing end is in contact with the clutch guide, the driven end cannot be released from engagement with the drive protrusion, and the abutment sensing end A configuration is adopted in which a spring is provided that biases the clutch in the direction of returning to the clutch guide when the clutch deviates from the clutch guide.

Embodiment FIG. 1 is a plan view showing the internal mechanism of the door lock actuator of the present invention with the lid removed, and FIG. 2 is a plan view of the same with the lid attached.
FIG. In the figure, a motor 3 is provided on one side of a case body 1 and a lid 2 made of synthetic resin, and an output shaft 4 is rotatably provided on the other side. A swing arm 5 is fixed to the outer end of the output shaft 4.

A worm 3b is provided on the rotating shaft 3a of the motor 3, and the worm 3b meshes with a worm gear 6a of a rotating rod 6 provided in a direction perpendicular to the rotating shaft 3a. The rotating rod 6 is further provided with a worm 6b in the axial direction, and the worm 6b meshes with a worm gear 7a provided on the outer peripheral surface of an output gear 7 rotatably supported with respect to the output shaft 4. . Therefore, as the motor 3 rotates forward or backward, the output gear 7 is configured to rotate clockwise or counterclockwise while being decelerated.

A circular passive plate 8 is fixed to the output shaft 4 by a connecting pin 9 so as to face the output gear 7, and rotates together with the output shaft 4. A fan-shaped engagement portion 8a is further protruded from the outer periphery of the passive plate 8, and the fan-shaped engagement portion 8a is located between the engagement steps 1a and 1b in the case body 1. allows the passive plate 8 to the swing arm 5 to rotate within a range of 60°. A clutch lever 10 is provided on the passive plate 8 so as to be rotatable within a range of 60° between engagement protrusions 8b and 8c formed on the surface of the passive plate 8, with the output shaft 4 as the central axis. . The fitting portion of the clutch lever 10 with respect to the output shaft 4 is formed as a long hole 10a in the longitudinal direction, so that the clutch lever 10 is supported so as to be slightly movable in the longitudinal direction.

The clutch lever 10 is connected to the output gear 7 during assembly.
an annular wall 7b forming a worm gear 7a on the outside of the
The driven end portion 10b on one side thereof has drive protrusions 7 formed at equal intervals on the inner peripheral surface of the annular wall 7b.
c or 7d. A thin-walled butt-sensing end 10c formed on the other side of the clutch rod 10 is constructed such that it can protrude outward beyond the annular wall 7b at any time, and radial spring portions 10d and 10e serve as the butt-sensing end. It is formed on the side of 10c.

In the case body 1, the engaging step portions 1a, 1
The wall member 1' between b is formed with an arcuate clutch guide portion 1c centered on the output shaft 4 and clutch non-guide portions 1d and 1e continuous on both sides thereof.

In the above configuration, when the output gear 7 is rotated clockwise by the drive of the motor 3 in the state shown in FIG. At this time, the abutment sensing end 10c comes into contact with the arcuate clutch guide 1c, so the rotation continues while maintaining this engagement (FIG. 4B), and the clutch lever 10
The spring portion 10d collides with the engaging protrusion 8b of the passive plate 8 and is pressed and bent, rotating the passive plate 8 to the swing arm 5 from the operating end U to the operating end V (FIG. 4C).

That is, since the clutch non-guide parts 1d and 1e are formed such that the collision sensing end 10c of the clutch lever 10 is removed from the arcuate clutch guide part 1c at the operating ends U and V, the drive protrusion 7c of the output gear 7 is Drive the clutch rod 10 in the length direction through the long hole 10a,
As a result of the engagement between the driven end portion 10b and the drive protrusion 7c being disengaged, the spring portion 10d that had been pressed and bent
is released and tries to return to its original state,
The clutch lever 10 is pushed back in the counterclockwise direction, and the abutment sensing end 10c once again comes into contact with the arcuate clutch guide 1c, and the driven end 10b is positioned behind the drive protrusion 7c (FIG. 4 (d)). ).

In this state, if the power to the motor 3 is cut off and the operation of the motor 3 is stopped, the swing arm 5 or the passive plate 8 can be moved from the operating end V to the U by manual operation. Contrary to the above, the engagement protrusion 8b of the passive plate 8 pushes the spring portion 10d to drive the clutch lever 10, and the clutch lever 10 has its collision sensing end 10c connected to the arcuate clutch guide portion 10.
It is possible to return to the state shown in FIG. 4B, independent of the output gear 7, while remaining in contact with the output gear 7.

Furthermore, when the motor 3 is reversed in the state shown in FIG.
c engages with the driven end 10b and the clutch lever 10
Rotate counterclockwise. At this time, the spring part 10
e collides with the engagement protrusion 8c and is pressed and bent, but eventually the passive plate 8 to the swing arm 5 are rotated from the operating end V to the operating end U by the clutch lever 10.

FIG. 5 shows another embodiment of the invention. In this example, instead of having the structure shown in the previous example, the clutch lever 10 is always biased in the direction of the driven end 10b by a spring 11 provided between the clutch lever 10 and the output shaft 4. The difference is that it uses a configured item.

In the actuator having this configuration, when the output gear 7 is rotated clockwise by the drive of the motor 3 in the state shown in FIG. collide with,
The passive plate 8 to the swing arm 5 are rotated from the operating end U to the operating end V (FIG. 5 RO → FIG. 5 C).

That is, at the operating ends U and V, the clutch non-guide parts 1d and 1e are formed so that the collision sensing end 10c of the clutch lever 10 is removed from the arcuate clutch guide part 1c, so that the drive protrusion 7c of the output gear 7 The clutch lever 10 is driven longitudinally through the elongated hole 10a while compressing the spring 11, and the clutch lever 10 is disengaged from the driven end 10b, and only the drive protrusion 7c rotates. Then, when the driving protrusion 7c exceeds the driven end 10b,
Under the action of the spring 11, the clutch rod 10 returns again in the direction of the driven end 10b, and can engage with the driving end 7c (FIG. 5D).

In this state, if the power to the motor 3 is cut off and the operation of the motor 3 is stopped, the swing arm 5 or the passive plate 8 can be moved from the operating end V to U by manual operation, as in the previous example. .

Furthermore, when the motor 3 is reversed in the state shown in FIG.
0 rotates counterclockwise and engages the engagement protrusion 8 of the passive plate 8.
c, the passive plate 8 to the swing arm 5 are rotated from the working end V to the working end U.

Effects of the Invention As described above, the door lock actuator of the present invention is operated by the motor to automatically release the engagement between the deceleration mechanism and the output shaft at the operating end, and It has a special structure that includes a clutch mechanism that automatically restores engagement when the direction of rotation of the motor changes, so manual operation of the output shaft at the operating end is easy and free. However, no matter where the position of the output shaft is moved by manual operation, there is no problem with remote control.

Since the clutch mechanism is small and any reduction mechanism can be selected and used, the actuator itself can be made compact and small.

Therefore, manual operation and remote operation can be operated in any combination, making it possible to construct a small and highly economical door lock device while retaining the advantages of a motor-type door lock that operates quietly. It is something that

[Brief explanation of drawings]

FIG. 1 is a plan view showing the internal mechanism of an embodiment of the door lock actuator of the present invention, FIG. C and D are diagrams of the operating state of the clutch lever, and A, B, C, and D of FIG. 5 are diagrams of the operating state of the clutch lever in another embodiment of the door lock actuator of the present invention. 1...Case body, 1'...Wall member, 1a, 1
b... Engagement stepped portion, 1c... Arc-shaped clutch guide portion,
1d, 1e...Clutch non-guiding part, 2...Lid body,
3... Motor, 4... Output shaft, 5... Swing arm, 6... Rotating rod, 7... Output gear, 7a...
...worm gear, 7b... annular wall, 7c, 7d...
... Drive projection, 8 ... Passive plate, 8a ... Sector-shaped engagement portion, 8b, 8c ... Engagement projection, 9 ... Connection pin,
10...clutch rod, 10a...long hole, 10b...
... Driven end, 10c... Collision sensing end, 10
d, 10e... Spring portion, 11... Spring.

Claims (1)

[Claims] 1. An output gear having at least one drive protrusion on the inner surface of the peripheral wall and driven by a motor via a reduction gear mechanism is provided rotatably with respect to the output shaft, and a passive plate is provided with a pair of engaging protrusions facing each other. A fixed arc-shaped clutch guide part is provided opposite to the output gear and fixed to the output shaft, and has a fixed arc-shaped clutch guide part centered on the output shaft, and a driven end part that can be engaged with the drive protrusion and a fixed part for the clutch guide part. A clutch lever having an abutment-sensing end portion is loosely fitted to the output shaft so as to be movable in the longitudinal direction and rotatably between the engagement protrusions, so that the abutment-sensing end portion is attached to the clutch guide portion. The driven end is configured to be irreleasably engaged with the drive protrusion when the driven end is in contact with the clutch guide, and the driven end is adapted to be attached in a direction to return to the clutch guide when the abutment sensing end deviates from the clutch guide. A door lock actuator characterized by being provided with a spring that applies pressure.