JPS60183219A - Damper drive device - Google Patents

Abstract

PURPOSE:To reduce the number of actuators in a drive device for driving various dampers suited for a car air conditioner by changing over gear trains with a compact motor to selectively drive a plurality of damper drive shafts. CONSTITUTION:When a motor 16 and a second motor 38 are driven, a shaft 23 is rotated through worm gear trains 17, 18, and a second worm 19 is rotated through an inner sun gear 24 integral with the shaft 23 and planetary gears 28, 29. Also a rotation changing-over worm wheel 36 is rotated by driving the second motor 38. An engaging pin 37 enters an outer peripheral cut-out of an outer sun gear 27 to stop the rotation of a third worm 20. Thus, an output shaft 42 is rotated through a second worm wheel 21 by the rotation of said worm 19 to pivot a mix damper. On the other hand, when the second motor 38 is reversed, the second worm 19 is stopped to rotate an output shaft 43 and a mode damper.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates, first, to a drive device for a damper such as an efflorescence and a wind direction control plate used in a car heater unit constituting a car air conditioner 6.

Conventional structure and its problems Conventionally, dampers used in car heater units have a mix damper 1 that adjusts the temperature by mixing proportions of cold air and warm air, and air intake and blowout styles, as shown in Figure 1. It is composed of mode dampers 2, 3°4.5.

The Minox damper 1 needs to be set at an arbitrary position in order to adjust the mixing ratio of the cold air from the cooler 7 and the warm air from the heater core 8. The 2+ 3+ 416 mode damper requires stepwise position setting according to the number of settings for suction and blowout modes. Normally, these dampers are opened and closed by connecting each of the 2, 3, and 4°5 dampers with a lever and a link mechanism, and opening and closing them by manual lever operation via a wire or the like. However, such manual operation cannot support car automatic air conditioners that automatically adjust the temperature and set the intake and blowout modes, which provide a higher degree of comfort. Therefore, an actuator is required to automatically open and close each damper.

Conventionally, the Minokundanno ζ-1 is a diaphragm type servo actuator that uses negative pressure air as an actuator for driving a damper for an automatic air conditioner. In the mode dampers 2, 3, 4, and 6, diaphragm actuators 10, 11, 12, and 13, which also utilize negative pressure, are usually installed for each drive shaft.

However, in the above configuration, a number of negative pressure actuators are required depending on the drive shaft, which requires a large regulation and drive space. was at a significant disadvantage.

In addition, when including the heavy duty of piping personnel such as the solenoid valve 14 that controls the negative pressure actuator and the vacuum tank 16, the electric power is considerably heavy, which is a factor that hinders the reduction in weight and size of the vehicle.

OBJECTS OF THE INVENTION In view of the above-mentioned drawbacks, the present invention provides a damper drive device in which mix and mode damper drive devices are made smaller and lighter.

Structure of the Invention The damper drive device of the present invention includes a drive motor, a first worm supported on a motor shaft, and a second worm on a shaft perpendicular to the motor shaft. It has a third worm, and is provided with a switching worm boiler for switching between forward and reverse rotation by a planetary gear mechanism at an intermediate position between the second and third worms, and a second motor that drives the worm wheel. 2. The second worm is in contact with the third worm. It is configured so that the third worm foil and the intermediate worm wheel 11 of the same foil serve as the output shaft, and it is small.

It has the advantage of being lightweight and capable of driving multiple damper shafts.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. Fig. 2 shows a plan cross section of a four-wheel drive device in a first embodiment of the present invention.

In FIG. 2, 16 is a drive motor, 17 is a first worm supported on the motor shaft, 18 is a first worm foil that comes into contact with the first worm, 19 is a second worm, and 20 (
2nd worm of 21.22 each with 3rd worm. It comes into contact with the third worm boil. 23 is the worm wheel 18 and the second
The rotation shaft of the worm 19 is connected to 24 internal dipositive gears. 26° 26 is 19, 23 with a 2 worm bearing
The rotating surface 1 of the second worm is rotatable in the radial direction, but is supported so as not to move in the axial direction.
0 is equipped with 27 external sun gears constituting a planetary gear mechanism, and meshes with 28.29 planetary gears. 3o is the bearing of the rotating shaft 23, 31 is the second worm 1
It is held in a lip 33 protruding from the housing 32 with a bearing number 9.

As shown in Fig. 3, planetary gears 28 and 29 are attached to the end face of the second worm 19, and a notch 34 is formed on the outer periphery of the end face.
is provided. Further, a notch 35 is also provided on the outer peripheral end surface of the outer sun gear at one end 27 of the third worm 20.

36 is a rotation switching worm wheel, which is equipped with a locking pin 37, and the locking pin is connected to the outer sun gear 27 of the planetary gear mechanism.
and the second arm 1 whose play supports the gear 28.29
The fourth worm 3 fixed to the second motor 38 and the motor shaft of the second motor 38 and the fourth worm 3 are inserted into one of the notches 35.
9. Reference numeral 40 indicates a rotation shaft of the rotary switching wormwheel, and reference numeral 41 indicates a stopper of the rotary switching wormwheel. Reference numerals 42 and 43 indicate output shafts that drive the link mechanism with the rotation shafts of the second and third worm wheels. FIG. 6 is a schematic cross-sectional view of the device. 44 is an upper housing that engages with the housing 32. Figure 6 shows the 1-ta unit as a whole, and 45.46 is the output l.
Lever 45, which is a lever that engages with ll1l142 and 43, is connected to a link 47 and a lever 48 to drive the mix damper 1. 46 lever is link 49°50.51
and levers 62, 53, 54, 55.

56 to drive the motor damper 3.4.5.

The operation of the damper and drive device constructed as described above will be explained below.

First, in FIG. 2, when the motor 16 and the second motor 38 are mounted in a J-shape, the first worm 17 rotates the shaft 23 that is integrated with the first worm wheel 18.
] I3'1 of the motor 38 rotates the rotation switching worm wheel, and the locking pin 37 is connected to the outer circumference L of the 27 foreign floats.
Entered i1J missing 35 and controlled 20 rotations in the 3rd wall.
F-, let it happen.

By the rotation of 1tli 23, the inner sun shaft 24 fixed to :ill+-I- is recovered, and the second worm 19 is rotated via L2 and the planetary gears 28, 29'. As a result, the second wheel and the wheel 21 rotate, and the output shaft 4
The lever 45 locked to the lever 2 rotates, and the link 47 and the lever 48 are separated, and the mix damper 1 rotates.

Next, when the second motor 38 is rotated in the reverse direction, the locking pin 37 enters the notch 34 of the second worm 19 and stops the rotation of the worm 19. As a result, the outer sun gear 27 rotates through the planetary gears 28 and 29, and is integrated with the outer sun gear 27.
The worm 2o and the third worm wheel 22 rotate.

Furthermore, the lever 46 locked to the output shaft 43 rotates, and the link 49.50.5j and the lever 52, 53°54.6
5.66 rotates the mode damper 3,4°5.

Effects of the Invention As described above, according to the present invention, it is possible to selectively drive a plurality of damper drive shafts using a very small second motor located on the indoor side. Compared to the method of providing an actuator, this method can be made smaller and lighter, and its practical effects are extremely high as it contributes to the reduction in size and weight of wheels in limited spaces such as automobiles.

[Brief explanation of drawings]

1 in 71 pictures of rabbits! A system configuration diagram of a damper drive device using a conventional reliable actuator, FIG. 2 is a plan cross-sectional view of 14 examples of the present invention, FIGS. 3 and 4 are side views of the second worm and the third worm, FIG. 5d is a cross-sectional view of an example M11 of the present invention, and FIG. 6 is a schematic diagram showing the configuration when the same device K is installed in a heater unit. 16 drive motor, 17-...first worm, 18-
・First edition - To Muhoino 23 ・Rotating axis, 19...Second worm, 2o...Third worm, 28.29.
・Planetary gear, 24・ ・Inner sun tooth, , iti, 2 completed・
・Evening 1 sun gear, 36...Switching worm boil, 37
Locking pin, 38...Second motor, 39...Fourth worm, 21 - To the second worm point 22... Third worm wheel) Iy, 42, 43-... Output ll1l
L O

Claims (1)

[Claims] A first drive motor, a first worm supported on a motor shaft; a first worm wheel mounted on a shaft orthogonal to the motor shaft; 2 worms, a third worm provided on an extension of the coaxial center, and the second worm. A planetary gear mechanism installed at an intermediate position connecting the third worm, a forward/reverse switching worm wheel provided at the outer circumferential direction of the planetary gear mechanism, and a second It consists of a motor, and second and third worm foils that come into contact with the second and third worms as a pair, and the planet 1ψf small support structure C1, the second worm or the third fang ☆: 1d A planetary gear and an external sun gear provided in
It is composed of an inner sun gear that comes into contact with the star gear 7 times (1k), and a groove for forward/reverse switching is provided on the outer periphery of the end face of the second and third worms, and the forward/reverse switching wall l
, a locking pin provided on the foil is configured to fit into the notch, and a second motor selectively switches the rotation of the second worm and the third worm, so that the second worm and the third worm are paired. The second worm foil, the third
A damper drive device that selectively transmits the rotational force of a drive motor to a worm wheel, and uses the rotating shafts of the second worm wheel and third worm boiler as outputs.・