JP3175208B2 - Multi-axis drive actuator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-axis drive actuator.

[0002]

2. Description of the Related Art Conventionally, as this type of actuator,
JP-A-61-191779, and JP-B-63-349.
No. 70 is disclosed.

The former includes an electric motor, two output shafts, a mechanism for transmitting a driving force generated from the electric motor to the output shaft, and an output shaft switching mechanism for selecting the output shaft. , A speed reducer including a planetary gear, a first internal gear, a second internal gear, and the like. When the electric motor is driven clockwise, the output switching mechanism is driven clockwise via the speed reducer. When one of the output shafts is driven, and the electric motor is driven in the counterclockwise direction, the output switching mechanism is driven in the counterclockwise direction via the speed reduction device to drive the other output shaft. .

The latter includes an electric motor, two output shafts, a mechanism for transmitting the driving force generated by the electric motor to the output shaft, and an output shaft switching mechanism for selecting the output shaft. The mechanism comprises a planetary mechanism including an internal sun gear, a planetary gear, an external sun gear, and the like, and a switching lever for selectively stopping rotation of a worm supporting the planetary gear of the mechanism and an external sun gear. ,
One of the output shafts is driven by stopping the rotation of the worm supporting the planetary gear and rotating the worm integrated with the outer sun gear, and stopping the rotation of the worm integrated with the outer sun gear to support the planetary gear. The other output shaft is driven by rotating the worm.

[0005]

In the former and the latter, due to the structure of the output switching mechanism, only two output shafts can be selected and switched, but three or more output shafts cannot be selected and switched. There is a problem to be solved.

[0006]

In order to solve the above-mentioned problems, the present invention provides a drive source, a plurality of output shafts, a transmission mechanism for transmitting a driving force generated from the drive source to the output shaft, and a transmission mechanism for transmitting the drive force to the output shaft. A switching mechanism for selectively switching a mechanism with respect to the output shaft, wherein the transmission mechanism is configured to transmit a driving force generated from the driving source, and a driving force from the transmission member to the output shaft. And a first clutch mechanism for intermittently transmitting the transmission of the power. When the driving force generated from the driving source is transmitted, the switching mechanism moves the transmission member to a position corresponding to a desired output shaft by the transmission. has a moving mechanism for, and a second clutch mechanism for intermittently transmitting the driving force to the moving mechanism from the driving source, the transmission member is the
Detecting movement to the position corresponding to the desired output shaft
A position detecting means for moving the transmission member to the desired position.
When moving, it is detected by the position detecting means.
Drive force from the transmission member to the output shaft until
The first clutch mechanism is controlled so as to cut off transmission of power.
And transmitting the driving force from the driving source to the moving mechanism.
With the second clutch mechanism controlled as described above,
A drive source is driven, and the transmission member is
Has moved to a position corresponding to the desired output shaft.
When detected, the drive source is stopped, and then the
Transmitting the driving force from the transmission member to the desired output shaft
Control the first clutch mechanism as described above, and
In order to interrupt the transmission of the driving force to the moving mechanism, the
Controls the two-clutch mechanism and then drives the drive source again
The multi-axis driving actuator to be used is adopted as technical means.

[0007]

When the transmission member is moved to a desired position,
Out of the transmission member until the position detection means detects this.
The first clutch machine to interrupt the transmission of the driving force to the power shaft
Controls the mechanism to transmit the driving force from the driving source to the moving mechanism.
Drive source while controlling the second clutch mechanism
Drive. As a result, the moving mechanism is directed to a desired output shaft.
Once move. The mobile Then, the detection means detects that the to a position where the transmission member corresponding to the desired output shaft
To stop the driving source based on it, and then
To transmit the driving force from the transmission member to the desired output shaft
The first clutch mechanism is controlled during the
Control the second clutch mechanism to cut off transmission of driving force
Then, the drive source is driven again. This drives
The driving force generated from the source is transmitted to the desired output shaft.

[0008]

As described above, according to the present invention, the above first and second embodiments are described.
The power of the drive source is transmitted by the cooperation of the clutch mechanism.
When transmitted to the output shaft via
Not transmitted to the moving mechanism, and the power of the drive source is transmitted to the moving mechanism
When transmitted, the power of the drive source is transmitted via the transmission mechanism
Not transmitted to output shaft. That is, the power of the drive source is transmitted
Power transmission system transmitted to the output shaft via a mechanism, and a drive source
Independently controls the power transmission system where the power of the
I can control. Therefore, even if there are three or more output shafts,
The force axis can be freely selected and driven.

[0009]

1 to 3, reference numerals 1 and 2 denote housings, both of which have a hollow cylindrical shape. Reference numeral 3 denotes an electric motor constituting a drive source, which is fixed to a center position inside the housing 2 via a mounting means (not shown).
Reference numeral 4 denotes a shaft of the electric motor 3,
To take out the driving force of the motor. Reference numeral 5 denotes a disk-shaped substrate, which is fixed to the shaft 4 of the electric motor 3 via fixing means (not shown), and rotates integrally with the shaft 4. Reference numeral 6 denotes a hollow cylindrical support column rotatably disposed around the outer periphery of the shaft 4 via bearings 7 and 8.
Bearings Bearings 7 and 8 are fixed to support column 6,
Since the support column 6 is not fixed to the shaft 4 but is merely inserted, the support column 6 can be moved in the axial direction of the shaft 4 via the bearings 7 and 8. Reference numeral 9 denotes a disk-shaped friction plate made of an appropriate magnetic material, which is fixed to a lower end of the support column 6. Reference numeral 10 denotes an arm, which is integrally formed on the upper end side of the support column 6 and has a form projecting in the radial direction of the support column 6. Reference numeral 11 denotes a shaft, which is integrally formed on the distal end side of the arm 10, and projects toward the top of the housing 1 so as to be located on an axis parallel to the axis of the shaft 4. Reference numeral 12 denotes a cowling portion having a substantially L-shaped cross section, which is fixed to the upper end of the support column 6 on the side opposite to the arm 10. A pulley 13 is rotatably fixed to the shaft 11 of the arm 10 via a bearing 14. An upper end of the pulley 13 is formed with an annularly protruding friction portion 131, and an engagement portion 132 is formed at the center of the upper end by sharpening the tip of a shaft for fixing the pulley 13.
Are formed. A pulley 15 is fixed to the upper end of the shaft 4 via a key 16. 17 is a belt,
It is stretched between the pulley 13 and the pulley 15, and the rotational driving force of the shaft 4 is transmitted to the pulley 13 of the arm 10. Reference numeral 18 denotes a plurality of, for example, six output shafts.
8 is rotatably fixed to the top of the housing 1 via a bearing 19. The output shaft 18 is fixed to the housing 1 radially around the shaft 4 at intervals of 60 degrees. The output shaft 18 has a substantially T-shaped cross section, and a disk portion 181 for contacting the friction portion 131 of the pulley 13 is formed at the head thereof. Recess 18 for engaging with part 132
2 are formed. Reference numeral 20 denotes a position sensor, which is fixed at the center position of the housing 1. Numeral 21 denotes an electromagnetic solenoid, which is disposed and fixed around the outer periphery of the support column 6 and is an annular field core 2.
2. Coil 23 fixed in its annular slot 221
It consists of. The outer peripheral flange 222 of the field core 22 of the electromagnetic solenoid 21 is sandwiched and fixed at a fitting portion between the housing 1 and the housing 2. Facing each other. Reference numeral 24 denotes a coil spring.
Are arranged in a compressed state in an annular gap between the inner peripheral flange 223 and the friction plate 9. As a result, when the electromagnetic solenoid 21 is not energized, the support column 6 is pressed downward by the compression reaction force of the spring 24, and the friction plate 9 is pressed against the substrate 5.

The coil 23 of the electromagnetic solenoid 21 is connected to an external electric circuit via a battery 25 and a switch 26. In the above embodiment, the shaft 4, the pulley 15, the belt 17, and the pulley 13 constitute the transmission member of the present invention, and the friction portion 131 , the engagement portion 132, and the electromagnetic solenoid 21 of the pulley 13 make up the first member. It constitutes a clutch mechanism. Further, the substrate 5, the shaft 4, supporting column 6, the friction plates 9, constitute a moving mechanism by the arm 10, also the substrate 5, friction plate 9 and the electromagnetic
The solenoid 21 forms a second clutch mechanism.

Next, the operation of the above configuration will be described.
First, when the switch 26 is open and the electromagnetic solenoid 2
When the coil 23 is not energized, the support column 6 is driven by the electric motor 3 due to the compression reaction of the spring 24.
And the friction plate 9 is pressed against the substrate 5. And
By energizing the electric motor 3 in such a state, the rotational driving force of the electric motor is applied to the shaft 4 of the electric motor 3.
It is transmitted to the fixed substrate 5. The substrate 5 is pressed against the friction plate 9
The contact of the electric motor 3 transmitted to the substrate 5
The rolling drive force is transmitted to the friction plate 9. The friction plate 9 is a support post 6
Is fixed to the lower end of the motor, so that the electric motor 3 is driven to rotate.
The force is transmitted to the support column 6 via the friction plate 9. This result
As a result, the supporting column 6 is electrically driven by the motor via the bearings 7 and 8.
The upper end of the support column 6 rotates in the same direction as the rotation direction of the
The arm 10 integrally formed on the side also rotates integrally .

The rotation of the arm 10 is detected by the position sensor 2.
Detected at 0, the arm 10 of the six output shaft 18,
When the intended axis position is reached, the power supply to the electric motor 3 is stopped. After the power supply is stopped, when the switch 26 is closed and the electromagnetic solenoid 21 is energized, a current flows through the coil 23 and a magnetic flux flows through the field core 22, so that the friction plate 9 is attracted to the field core 22 against the spring 24. On the other hand, the entire support column 6 is pulled up by the suction of the friction plate 9 by the field core 22, so that the friction portion 131 of the pulley 13 of the arm 10
8, and the engaging portion 132 of the pulley 13 engages with the concave portion 182 of the output shaft 18.

In this state, when the electric motor 3 is energized, the rotational driving force of the electric motor 3 becomes
5, the output shaft 18 is transmitted to the output shaft 18 via the belt 17 and the pulley 13, and the output shaft 18 rotates. Since the connection between the friction plate 9 and the substrate 5 is cut off as described above, the rotational driving force of the electric motor 3 is not transmitted to the support column 6, so that the support column 6 does not rotate and the arm 10 is Maintain the stopped state at the predetermined position.

FIG. 4 shows another embodiment of the present invention.
In this embodiment, the pulleys 13 and 15 in the embodiment shown in FIGS. 1 to 3 are constituted by gears 70 and 80, and a clutch function is added to the gear 80 side.

FIGS. 5 and 6 show still another embodiment of the present invention. In the embodiment shown in FIGS.
5 and 6, the two pulleys 13 are provided for one arm 10 so that two output shafts 18 are simultaneously driven. It was made.

FIG. 7 shows an application example of the present invention. In this application example, the present invention is applied to an automotive air conditioner, and the device itself is well known.
The symbols in the figure will be briefly described. 100 is a blower device composed of an electric motor and a fan, 110 is an inside air intake, 120 is an outside air intake, 130 is a damper for switching these intakes, 140 is an evaporator, 150 is a heater core, 160 is a foot outlet, and 170 is a face blower Exit, 18
0 is a defroster outlet, 190 is an air mix damper,
Reference numeral 200 denotes a face, a defroster switching damper, 210 denotes a foot opening / closing damper, and 300 denotes a multi-axis drive actuator of the present invention. Each damper and the actuator are connected via a flexible cable 400. When the damper is set at an intermediate position between the solid line position and the broken line position in the figure, the energizing time of the electromagnetic solenoid 21 of the actuator is shortened, and the coupling time between the pulley 13 and the output shaft 18 is shortened. This can be achieved by reducing the rotation angle of the output shaft 18 or controlling the energization time of the electric motor 3.

The multi-axis drive actuator 300 of the present invention
As illustrated in FIG. 7, each of the above-described dampers 190, 2
It is used to appropriately switch between 00 and 210.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment.

FIG. 2 is a sectional view taken along line II of FIG.

FIG. 3 is a plan view of FIG. 1;

FIG. 4 is a sectional view showing another embodiment.

FIG. 5 is a sectional view showing still another embodiment.

FIG. 6 is a sectional view taken along line VV of FIG. 5;

FIG. 7 is a conceptual diagram showing an application example.

[Explanation of symbols]

 3 Electric motor 4 Shaft 5 Substrate 6 Support column 9 Friction plate 10 Arm 13 Pulley 15 Pulley 17 Belt 18 Output shaft 21 Electromagnetic solenoid 22 State core 23 Coil 24 Spring 25 Battery 26 Switch

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Mitsuo Inagaki 14 Iwatani, Shimowasumi-cho, Nishio-shi, Aichi, Japan Inside of the Japan Automobile Parts Research Institute (56) References 58-14259 (JP, U) Japanese Utility Model 62-82442 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F16H 37/06, 3/085

Claims (1)

(57) [Claims] 1. A drive source, a plurality of output shafts, and a transmission mechanism for transmitting a driving force generated from the drive source to the output shaft,
A switching mechanism for selectively switching the transmission mechanism with respect to the output shaft, wherein the transmission mechanism is configured to transmit a driving force generated from the drive source to the transmission shaft; A first clutch mechanism for intermittently transmitting the driving force, wherein the switching mechanism causes the transmitting member to move to a position corresponding to a desired output shaft by transmitting the driving force when the driving force generated from the driving source is transmitted. And a second clutch mechanism for intermittently transmitting the driving force from the driving source to the moving mechanism, wherein the transmitting member moves to a position corresponding to the desired output shaft.
Position detecting means for detecting that the transmission member has been moved to the desired position.
The transmission is performed until the position is detected by the position detecting means.
Transmission of the driving force from the first member to the output shaft.
The first clutch mechanism is controlled in the
The second clutch is configured to transmit the driving force to the moving mechanism.
The drive source is driven in a state where the switch mechanism is controlled, and the detection member causes the transmission member to move to the desired output shaft.
When it is detected that the camera has moved to the position corresponding to
The drive source is stopped, and then,
The first clutch is transmitted so as to transmit the driving force to a desired output shaft.
Control the switch mechanism to drive the drive mechanism from the drive source to the moving mechanism.
The second clutch mechanism is controlled so as to cut off transmission of power.
And then driving the driving source again .