JPS59110906A - Actuator - Google Patents

Abstract

PURPOSE:To achieve the structural simplification and miniaturization of an actuator, by driving an output drum interlocked with an actuated member by means of rotation in a transmitter element consisting of a permanent magnet. CONSTITUTION:With centrifugal force at a time when a boss part 23a of a worm wheel 23 rotates in an arrow 43 direction, a transmitter element 31 separates from a main shaft 24 against magnetic attraction, and its outer surface rotates in the same direction as being touched to an inner circumferential surface 27a of a concave part 27. When this transmitter element 31 engages with a side part 18a of a projecting claw 28, an output drum 26 is made to turn round in the arrow 43 direction. When the transmitter element 31 is most close to an assist member 29, the element 31 is attracted to not only the main shaft 24 but the assist member 29 whereby it advances outward with certainty, thus its engagement with the projecting claw 28 is carried out without fail.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for locking and unlocking a car door lock, for example.
It can be used to directly operate door locking/unlocking when automatic commands are given from the driver's seat, or it can be used to directly move other operated parts based on commands from a remote location. The present invention relates to an actuator used for.

As an actuator for locking/unlocking conventional automobile door locks, the rotational force of the motor of the drive unit is reduced by spur gears, bevel gears, etc., and is used to lock/unlock levers and manual operation of door locks. There is a type that allows both knobs to be driven automatically at the same time.

This conventional actuator has disadvantages in that the number of parts increases to increase the reduction ratio of the reduction mechanism, and the shape of the actuator itself becomes bulky.

In order to solve this eternal problem, it is preferable to adopt a worm gear mechanism that can obtain a large reduction ratio with a single deceleration. However, in the case of a worm gear mechanism, the worm wheel of the driving node is Therefore, when an actuator equipped with such a worm gear mechanism is adopted, another disadvantage arises in that manual operation using the lock/unlock knob is impossible.

To resolve this inconvenience, it would be possible to install a clutch between the acticoator and the door lock, but this would make the entire device more complex and larger than the conventional one that uses spur gears, etc. occurs.

In view of the above-mentioned circumstances, the present invention has been made to provide an actuator that satisfies the demands for simplified structure and miniaturization, has a clutch function, and is also able to employ a worm gear mechanism as a reduction mechanism. The purpose is to provide

In the actuator of the present invention, the worm rotated by the drive unit is meshed with a worm wheel that is relatively rotatably supported on the main shaft of the magnetic material, and
A radial hole is formed in the non-magnetic boss portion formed on the worm wheel, a transmission element such as a permanent magnet is slidably fitted into the hole, and the boss portion of the worm wheel is An output drum having a recess that can be loosely fitted is provided so as to be able to rotate together with the main shaft, and when the worm wheel is stopped, the transmission element is attracted to the main shaft, and when the worm wheel rotates, the transmission element is attached to the main shaft, and when the worm wheel rotates, the output drum is rotated by the centrifugal force. The transmission element protrudes from the boss portion and engages with a protruding pawl protruding from the inner surface of the recessed portion of the output drum, thereby allowing the output drum to be rotated by a required amount.

In addition, in the present invention, in order to more reliably operate the actuator, a supporting member is provided to help the transmission element pop out due to centrifugal force, and to ensure the return operation of the transmission element when the driving force is released. To avoid this, auxiliary means such as a coupling for slightly reversing the worm and worm wheel should be provided.

Hereinafter, the present invention will be explained in detail with reference to an illustrated embodiment.

1 to 4, a cover (4) is attached to the main body (2) of the actuator (1) via a seal member (3).
is installed. The cover (4) has a mounting hole (5)
The actuator (1) is supported by a pair of arms (6) having a diameter of 1.5 mm, by which the actuator (1) is attached to a stationary member within the door (path shown). Inside the main body (2), as shown in Fig. 2, there is a drive unit (power is fixed) consisting of a motor, and this drive unit (7) is connected to a coupling (8).
) is connected to the worm (9).

In Fig. 5, a coupling (8) is attached to the drive unit (force output shaft αυ), and the coupling (8) is
The key (drive member 03 fixed to the output shaft αυ by 121), the driven member (14) rotatably attached to the output shaft ←υ, and the coil spring (15
It is composed of 1. A driving pawl (16) facing in the radial direction is formed on the end face of the driving member 03) facing the driven member I, as shown in FIG. One end (15a) of the coil spring (151) is locked to (I7).
An axial groove α□□□ is also formed on the outer periphery of the driven member αa, and a coil spring (1
5) The other end (15b) is locked. Drive member (
An arcuate driven pawl discharge is provided on the end face of the driven member 04) opposite to 13), and this driving pawl (2) is normally symmetrical with the driving pawl (16) with respect to the output shaft (1υ). The driven member is located at one end of the worm (9) and extends within the rotation locus of the drive claw (16). Although it is fixed, it may also be formed integrally with the end of the worm (9).

A worm shaft (2υ
is pivotally attached to the side wall of the main body (2) via a washer (22).

In FIG. 4, the worm wheel (23) meshing with the worm (9) is pivoted on the magnetic main shaft (2a), the base of the main shaft (24) is on the cover (4), and the free end is on the main shaft (2a). are respectively supported by the main shaft (2).
) and the main body (2), there is a dustproof seal member (25
) is provided.

An output drum (26) made of a non-magnetic material is fixed to the base of the main shaft.
As shown in FIG. 8, a concave portion is formed on the negative side surface of the main shaft (24), which is eccentric by a distance l from the axis of the main shaft (24). An inward protruding claw (28) is formed on the inner peripheral surface (27a) of the recess (27) at a location furthest from the main shaft (24). A supporting member (29) made of a thin plate of magnetic material is embedded in the inner circumferential surface (27a), each end of which is located near the protruding claw (28), and the inner circumferential surface (29a) is The inner peripheral surface (27a) of the recess (27)
) is on the same surface.

However, the inner shape of this assisting member (29) is similar to that of the protruding claw (2).
8) is closest to the outer circumferential surface of the boss part (23a) of the worm wheel (23), and then gradually moves away from the outer circumferential surface of the boss part (2 rollers a) to both sides. It has a curved surface that separates from the surface.

A non-magnetic boss portion (2 rollers a) is formed on the − side surface of the worm wheel (23), and this boss portion (2 rollers a) is
A hole (23b) is fitted into the recess (27) with a gap and is bored in the radial direction of the boss (25a).
C) includes a transmission element (31
) is fitted so that it can move forward and backward, and the worm wheel (2
3), when stopped, its inner end surface is attracted to the main shaft (2) made of a magnetic material. The transmission element (3) is engaged with and disengaged from the protruding claw (28I) by the action described below,
Both countries constitute the dog clutch country. A protruding piece is formed on the outer periphery of the output drum (26), and this protruding piece (33) is attached to one of a pair of stoppers (34) and (35) fixed to a suitable position on the cover (4). Due to the contact, the range of rotation is restricted.

In FIGS. 1 and 4, the main shaft C! penetrates the main body (2) and protrudes to the outside! →The free end has an arm member (36)
The base of the arm member (trowel) is fixed, and a connecting rod (13 bent portions (37a)) is pivotally attached to the free end of the arm member (trowel), and is prevented from being removed by a ring (38). Ren (37)
1 is adapted to be interlocked with an operated member such as a door lock mechanism and a manual operation knob for a door lock (both shown in the figure).

In addition, as shown by the solid line in Fig. 2, the output drum (26)
When the protruding piece (33) is in contact with the left stopper (34), the arm member (G) tilts to the left as shown by the solid line in Figure 1, maintaining the door lock in the unlocked state. and
When the projecting piece (33) comes into contact with the right stopper (351 side) as shown by the imaginary line in FIG. 2, the arm member (36) moves to the right as shown by the imaginary line in FIG. The relationship is similar to that of leaning over and locking the door.

Next, the operation of the above embodiment will be explained.

Now, the actuator (1) is in the state shown by the solid line in Figures 1, 2, and 8, and if you want to lock the door from this state, the output shaft (11) is in the state shown by the solid line. 6
The drive unit (power is applied to the drive unit) so as to rotate in the direction of the arrow (4) in the figure.

Then, the drive member (13) rotates in the same direction, applying rotational force to the worm (9) while twisting the coil spring 0!5), and the rotation of the worm (9) causes the worm wheel (23) to rotate. ) is indicated by the arrow (43) in Figure 2.
) direction.

In FIG. 9(a), when the boss portion (23a) of the worm wheel (23) rotates in the directions of the arrows (4), the centrifugal force causes the transmission element (31) to resist the adsorption force and move the main shaft (
24) and extends outward, and its outer surface rotates in the same direction while contacting the inner circumferential surface (27a) of the recess (27). When the transmission element (31) rotates to the position shown in FIG. 9(b), the side part (28a) of the protruding claw (28)
) to rotate the output drum (26) in the direction of the arrow (4).

When the transmission element (31) advances, the assisting member (291) is provided on the inner peripheral surface (27a) of the recess (2'5a), so in the unlikely event that the centrifugal force of the boss (2'5a) is insufficient, ,
Even if the transmission element (31) is difficult to protrude outward, when the transmission element (31) is closest to the assisting member (29),
The transmission element c31) is used not only for the main shaft (24) but also for the assisting part U.
(291 is also attracted, and the urging force in the internal and external directions due to the magnetic force is canceled out, and centrifugal force is further added to it, so the transmission element (31) reliably advances outward and the protruding claw (28) The guarantee will be ensured.

As the output drum (26) rotates, the arm member (G) that is substantially integral with the output drum (26) rotates in the direction of the arrow (in the direction of the first floor) in FIG. When the arm member (36) rotates to the position shown by the chain line (36A) and the door lock mechanism is locked, the transmission element (3υ is approximately one rotation as shown in FIG. 9(c)). to rotate the output drum (26) by the required amount.

When the output drum 06) rotates to the state shown in FIG. 9(c), the protrusion (33) touches the stopper (35) on the right side of FIG.
comes into contact with. Then, the transmission element (31) engages the protruding claw (28
), the output drum (26), worm wheel (23), worm (9) and driven member 1
4) will all stop.

Therefore, all the driving force generated by the drive unit (force) after these members have stopped is spent on twisting the coil spring (I5), and ultimately the drive claw (13) of the drive member (13) is
The drive part (force output shaft (11)) also stops in a state where the workpiece 6) is in contact with the drive claw 19) of the driven member <14).

Thereafter, when the power supply to the drive unit (7) is stopped, the restoring force of the coil spring (151) causes the drive member 03 and the output shaft 0υ to rapidly reverse in the direction of the arrow (451) in FIG. 6. Due to the inertial force of the member (13) etc. during this reversal, the driven member α (a) and the worm (9) are also slightly reversed in the direction of the arrow (451), and the worm wheel (2) is also slightly reversed accordingly.

Due to this slight reversal of the worm wheel (c), the above-mentioned pressing action between the transmission element 01) and the protruding pawl (281) is released, and the transmission element (31) is moved υ by the adsorption action to the main shaft (24). As shown by the chain line (51A) in FIG. 9(a), it completely sinks into the boss portion (23a).

It should be noted that even if there is no reverse action by such a compulsion (8), when the power to the drive unit (force) is stopped, the transmission element C
31) and the protruding claw (2&) is released, the transmission element (31) naturally sinks into the boss part (32a) due to the adsorption action to the main shaft (to). By providing the ring (8), the transmission element c31) can be more reliably removed from the protruding claw 12→.

When the transmission element l31) is retracted to the position shown by the chain line (31A), by manually operating the five-door lock knob, the output drum f26+e can be moved from the locked position shown in FIG. 9(C) to the position shown in FIG. The door lock mechanism can be unlocked by rotating it to the unlocked position shown in (a).

To unlock the door lock mechanism electrically, the output shaft rotation must be the 6th.
In the figure, the drive part (7) rotates in the direction of the arrow (Tsukuda).
the boss part (2) of the worm wheel (23).
3a) in the direction of arrow (44) from the position shown in FIG. 9(c), and the output drum (2
6) in the same direction.

According to the present invention, the output drum that is interlocked with an operated member such as a door lock mechanism is driven by the rotation of a transmission element made of a permanent magnet, and a large deceleration occurs between the drive part and the transmission element in one deceleration. Since the worm gear mechanism that can obtain the ratio is used, it is possible to reduce the number of parts of the actuator that operates the door lock mechanism and to downsize the device.

In addition, the boss of the worm wheel, the transmission element, the output drum, etc. constitute an extremely simple and compact dog clutch, which makes it possible to manually operate operated members such as the door lock mechanism. Furthermore, the drawbacks of actuators using conventional gear mechanisms can also be overcome.

Furthermore, by providing an assisting member made of a magnetic material on the inner circumferential surface of the concave portion of the output drum, the transmission element is reliably advanced to the operating position, and the dog clutch consisting of the protruding pawl of the output drum and the transmission element is engaged. The effect can be ensured. In addition, a coupling including a torsion spring is disposed between the drive unit and the worm, and the transmission element after being driven is slightly rotated in the opposite direction to the drive direction with respect to the protruding pawl of the output drum. As a result, the action of releasing the dog clutch is reliably performed, and the output drum and the operated member interlocked therewith can be easily moved by manual operation.

In the above-described embodiment, a coil spring was used as the torsion spring of the camp ring, but this can also be replaced with a torsion bar.

In this case, each end of the torsion bar may be fixedly attached directly to the output shaft of the drive section and the worm, and the above-mentioned drive member and driven member can be omitted.

[Brief explanation of drawings]

FIG. 1 is a front view of an embodiment of the present invention. FIG. 2 is a longitudinal sectional front view of the main body, and FIG. 6 is a right side view. Figure 5 is
FIG. 6 is an exploded perspective view of the camp ring. FIG. 7 is an exploded perspective view of the worm wheel and output drum. FIG. 8 is the n-tt in FIG. 4. The line sectional view, FIG. 9, is an operational view of the mechanism shown in FIG. 8. (1) Actuator (blade drive unit (8) coupling (9) Worm αυ output shaft
αJ drive member αa driven member α 勺 coil sub 1 non-squeeze drive claw U duck drive claw (c) Worm wheel (23a) Boss part (23b
) Hole Main shaft along θ (26) Output drum (2'0 recess (28) Projecting pawl (29) Assisting member (31) Transmission element
(321 mesh clutch eel protrusion piece
C row, c35) Stopper Fig. 1 Fig. 2 1 Fig. 4 Dan Fig. 5

Claims (6)

[Claims] (1) A worm that is rotatably supported on the main body, a drive section that is attached to the main body and rotates the worm in forward and reverse directions, and a worm that is rotatably supported on the main body and is operated via an appropriate linking means. a main shaft made of a magnetic material connected to the member; a worm wheel rotatably supported on the main shaft so as to be relatively rotatable, meshing with the worm, and having a boss portion made of a non-magnetic material; and a worm wheel rotating integrally with the main shaft. an output drum having four parts into which the boss part of the worm wheel can be loosely fitted, and having protruding claws at appropriate positions on the inner peripheral surface of the recess; When the worm wheel is stopped, it is attracted to the main shaft, but when the worm wheel is rotating, it protrudes from the embossed part due to centrifugal force, and the output drum An actuator comprising a transmission element such as a permanent magnet that can rotate an output drum by engaging with a protruding pawl. (2) A worm rotatably supported on the main body; a drive unit attached to the main body that rotates the worm in forward and reverse directions; and a worm rotatably supported on the main body and operated via appropriate linking means. a main shaft made of a magnetic material connected to the member; a worm wheel rotatably supported on the main shaft so as to be able to rotate relative to the main shaft, meshing with the worm and having a boss portion made of a non-magnetic material; an output drum that is movably provided and has a recess into which the boss of the worm wheel can loosely fit, and has protruding pawls at appropriate positions on the inner peripheral surface of the recess; When the worm wheel is stopped, it is attracted to the main shaft, but when the worm wheel is rotating, it protrudes from the υ boss part due to centrifugal force, and the protruding pawl of the output drum a transmission element such as a permanent magnet capable of rotating the output drum by engaging with the worm wheel; An actuator comprising: an assisting member that attracts suction in a direction protruding from the part. (3) Adjust the inner shape of the assisting member so that it is closest to the outer circumferential surface of the boss portion of the worm wheel at a portion 180° opposite to the protruding pawl, and gradually moves away from the outer circumferential surface of the boss portion on both sides. The actuator according to claim 2, characterized in that the actuator has a curved surface that is separated from the surface. (4) The assisting member is made of a magnetic material.
The actuator according to item 2) or item (3). (5) A worm rotatably supported on the main body, a drive unit attached to the main body that rotates the worm in forward and reverse directions, and a worm rotatably supported on the main body and operated via appropriate linking means. a main shaft made of a magnetic material connected to the member; a worm wheel that is rotatably supported on the main shaft so as to be able to rotate relative to the main shaft, meshes with the worm, and has a boss portion made of a non-magnetic material; an output drum that is rotatably provided and has a recess into which the boss of the worm wheel can loosely fit, and has protruding pawls at appropriate positions on the inner peripheral surface of the recess; It is slidably fitted into a radial hole provided, and when the worm wheel is stopped, it is attracted to the main shaft, but when the worm wheel is rotating, it protrudes from the embossed part due to centrifugal force, and the protruding pawl of the output drum a transmission element such as a permanent magnet capable of rotating the output drum by engaging with the worm, and a torsion spring having each end connected to the output shaft and the worm of the drive section, When the driving force is released,
The cutter is configured to apply a repulsive force to the output shaft in a direction opposite to the previous direction of rotation. An actuator comprising a ring. (6) The actuator according to claim (5), wherein the torsion spring in the coupling is a torsion coil spring. (7) The actuator according to claim (5), wherein the torsion spring in the coupling is a tone-on bar.