JPS6334971Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a damper drive device that controls the drive of a temperature control door and an air outlet switching door in a vehicle air conditioner.

Conventional configuration and problems thereof Conventionally, this type of device has been configured as shown in FIG. That is, the air that has passed through the intake door 1, which determines whether to circulate internal air or introduce external air, is blown to the cooler 3 by the blower 2. 4 is a heater, and 5 is a temperature adjustment door, which changes the distribution of the amount of air passing through the heater 4 and the side passage 6 to adjust the blowing temperature. 7 is the VENT door, temperature control door 5
This blows air whose temperature is adjusted to your face. 8 is a DEF door, and 9 is a HEAT door, which blows out windows and footwells, respectively. These perform operations related to each other by a link mechanism (not shown) or the like. 10 is a first motor that drives the intake door 1, and 11 is a second motor that drives the temperature adjustment door 5. 12 is the air outlet change door (VENT door 7, DEF door 8,
The third motor that drives the HEAT door 9), which is normally driven by one motor. However, the second motor 11 and the third motor 12 are often installed in the same unit, which poses a major problem in terms of space.

Therefore, in the above conventional configuration, the second motor 11
It was necessary to house the and third motor 13 in one casing, and to drive the shaft of the second motor 11 and the shaft of the third motor 13 with one DC motor.

Purpose of the Invention The present invention aims to eliminate the above-mentioned conventional shortcomings,
The purpose is to reduce the size of the damper drive device and extend its life.

Structure of the device In order to achieve this object, the device provides an air conditioning unit equipped with an air outlet changing door for selecting an air outlet and a temperature control door for controlling temperature, with a motor, a clutch device for switching between the shaft of the air outlet changing door and the shaft of the temperature control door and transmitting the power of the motor to the shaft of the motor, and a drive device for driving the clutch device to transmit the power to the shaft of the temperature control door when not energized and to the shaft of the air outlet changing door when energized, and a priority device for giving priority to the drive of the air outlet changing door over the drive of the temperature control door.

With this configuration, the number of motors used as the drive source is reduced, the configuration is made more compact, and the clutch device is not energized when the frequently used temperature control door is driven, resulting in a longer life.

DESCRIPTION OF EMBODIMENTS The present invention will be described below with reference to FIGS. 2 and 3 of the accompanying drawings, which show one embodiment of the present invention.

In the figure, 20 is a DC motor, and a shaft 23 is rotated by a worm 21 fixed to the shaft of the motor 20 and a helical gear 22 that meshes with the worm 21. 24 is a worm that rotates around the shaft 23, and is connected to the output shaft A via a helical gear 25.
Rotate 26. A planetary gear 27 rotates around a shaft 28 and meshes with an inner sun gear 29. 30 is an external sun gear which meshes with the planetary gear 27 and is equipped with a worm 31. 3
A ball 2 constitutes a bearing for the shaft 23 and the external sun gear 30. 33 is a helical gear which meshes with the worm 31 to rotate the output shaft B34.
The shaft 35 is connected to the worm 31, and similarly to the shaft 23, is supported by a bearing in the case 36. Reference numeral 37 denotes a moving element which meshes with the worm 24 and the outer sun gear 30 and fixes one side by the movement of the solenoid 38. 3
Reference numeral 9 denotes a position detection device for the output shaft A26, which meshes with the helical gear 25. Note that a similar position detection device is also provided on the output shaft B34, but illustration and description thereof are omitted here. In addition, the output shaft B34 is connected to a link mechanism (not shown) so as to operate the temperature control door 5, and the output shaft A26 is connected to the air outlet changing doors 7, 8, and 9 in association with each other.

Further, when a blowout position is selected by a well-known blowout position selection means (not shown), the solenoid 38 is attracted, and the mover 37 fixes the outer sun gear 30.
Furthermore, when each door comes to the set position, the solenoid 38
The suction is released, the solenoid mover and the worm 24 are fixed, and the DC motor 20
It is configured so that it stops.

In the above configuration, when a blowout position is first selected by the blowout position selection means, the solenoid 38 is attracted and the mover 37 fixes the outer sun gear 30. or
The rotation of the DC motor 20 is transmitted to the shaft 23 via a worm 21 and a helical gear 22. Further, since the outer sun gear 30 is fixed, the planet gear 27 rotates around the outer sun gear 30 as the inner sun gear 29 transmits the rotation of the shaft 23, and the worm 24 rotates. Therefore, the output shaft A2
6 is rotated by the helical gear 25 transmitting the rotation of the worm 24. As a result, when each door is in its set position, the solenoid 38
suction is released, the mover 37 fixes the worm 24, and the DC motor 20 stops rotating, so each door stops.

Next, when setting the position of the temperature control door 5 by the temperature control means, the solenoid 38 is not sucked and the worm 24 is maintained in a fixed state. Therefore, the rotation of the DC motor 20 is transmitted to the worm 21 and the helical gear 22 to rotate the shaft 23, and the rotation of the planetary gear 27 meshed with the inner sun gear 29 causes the outer sun gear 30 to rotate. The rotation of the external sun gear 30 is transmitted to the helical gear 33 via the worm 31, and then to the output shaft B34, and when the output shaft B34 comes to the set position, DC
The motor 20 stops rotating, and the temperature control door 5 stops.

The above control is shown in a flowchart as shown in FIG. 3. That is, when an air outlet is selected by the air outlet selection means, the solenoid 38 attracts air with the highest priority and the output shaft A rotates. Then, when the temperature is adjusted by the temperature setting means, the solenoid 38 is not attracted and the DC motor only rotates, causing the output shaft B34 to rotate.
rotates. Therefore, even if the outlet selection means and the temperature setting means are set at the same time, the outlet selection means takes priority.

Effects of the Invention As is clear from the above embodiments, the damper drive device in the vehicle air conditioner of the present invention uses one motor to drive the outlet change door for selecting the outlet and the temperature control door for temperature adjustment. In addition, the drive of the air outlet change door is given priority over the drive of the temperature control door, and the frequently used temperature control door is operated without energizing the clutch mechanism, thereby reducing the lifespan of the clutch mechanism. This not only improves performance, but also reduces noise during switching. In addition, by prioritizing the drive of the air outlet change door, when changing the air outlet, the door is activated quickly, and the delay in actuation of the two axes, which is a disadvantage of a mechanism that operates two axes from one drive source, can be avoided by the passenger. This has the effect of not making you feel that way.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a vehicle air conditioner;
FIG. 2 is a damper drive device for a vehicle air conditioner showing an embodiment of the present invention, and FIG. 3 is an operational flowchart of the device. 5...Temperature control door, 7...VENT door, 8
...DEF door, 9 ...HEAT door, 38 ... Solenoid, 37 ... Mover, 26 ... Output shaft A,
34...Output shaft B.

Claims (1)

[Scope of utility model registration request] An air conditioner equipped with an air outlet changing door for selecting an air outlet and a temperature adjusting door for adjusting the temperature includes one motor, and the power of this motor is connected to the axis of the air outlet changing door and the temperature adjusting door. a clutch device for switching the shaft of the air outlet and a drive device for driving the clutch device to transmit electricity to the shaft of the air outlet change door and to the axis of the temperature control door when the electricity is not energized, A damper drive device for a vehicle air conditioner equipped with a priority device that prioritizes driving of a change door over driving of a temperature control door.