JPH03211352A - Wind shifting device of air conditioner - Google Patents

Abstract

PURPOSE:To enable a smooth and positive rotational driving for a wind shifting vane even under an application of a spur gear for a gear reducer by a method wherein a supporting shaft is provided with a resilient member for always applying a resistance against a rotation of the supporting shaft. CONSTITUTION:A supporting shaft 11 is provided with a resilient member 16 for always applying a resistance against a rotation of the supporting shaft 11. A wind shifting vane 10 may be rotated smoothly even under a repeated vertical movement of it during a cooling or heating operation due to the fact that a specified resistance is always applied to the supporting shaft 11 with the resilient member 16. Although a center of gravity of the wind shifting vane 10 is applied with an inverse rotating force under a gravity its passing through a vertical line, its inverse rotation is prevented by the resistance of the resilient member 16. In addition, in the event that an outlet 8 is fully closed by the wind shifting vane 10, the wind shifting vane 10 abuts against a lower end of the outlet 8 and stops. After this operation, even if a motor 12 is further driven, a resistance applied to the rotating shaft 11 through the resilient member 16 causes no inverse rotation of the wind shifting vane 10 even if the rotational torque of the motor 12 is varied and reduced. With such an arrangement, even if the spur gear is used in the gear reducer, the rotational driving of the wind shifting vane can be smoothly and positively carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a wind direction deflection device for an air conditioner that can deflect wind direction up and down.

(Prior art) Conventionally, some air conditioners block the air outlet with vertical wind deflection blades to improve the appearance during seasons and times when the device is not in use. Some used worm gears.

(Problems to be Solved by the Invention) However, in the above device, the axes of the worm gear and the worm wheel are offset by an angle of 90°, and there is a problem that the volume of the drive device becomes large.

In addition, in a device that uses spur gears as a reducer, when the center of gravity of the vertical wind deflection blade passes through a perpendicular line due to the backlash of the gear, the vertical wind deflection blade rotates in the counter-rotation direction by the amount of backlash due to one gravitational force. There is a problem in that this causes vibration and noise and gives the user a sense of discomfort.

Furthermore, when the air conditioner is stopped and the air outlet is completely closed by the vertical wind deflection vanes, the motor continues to be driven for a while even after the vertical wind deflection vanes are stopped by the stop material. At times, there is a problem in that abnormal vibrations occur in the vertical wind deflection blades due to uneven rotation of the motor and backlash.

SUMMARY OF THE INVENTION An object of the present invention is to provide a wind deflection device for an air conditioner that can smoothly and reliably rotate wind deflection blades even when a spur gear is used as a speed reducer.

(Means for Solving Problem W) In order to achieve the above object, the present invention provides, as a first means, an air outlet for blowing out air that has passed through a heat exchanger, and air blown out from the air outlet. a support shaft that supports the wind direction deflection blade and rotates together with the wind direction deflection blade; a motor connected to the support shaft to drive the wind direction deflection blade; A wind direction deflection device for an air conditioner equipped with a speed reducer consisting of a group of gears, characterized in that the support shaft is provided with an elastic body that always provides resistance to rotation of the support shaft, and as a second means,
The support shaft is characterized in that an elastic body is provided on the support shaft to constantly apply a biasing force such that the wind direction deflecting blade rotates in a direction to close the air outlet.

(Function) By the first means of the present invention, the rotation of the support shaft of the wind deflection blade is constantly resisted by the reversal of the backlash of the wind deflection blade that occurs when the center of gravity of the wind deflection blade passes through a perpendicular line. The elastic body prevents the rotation and always applies resistance to the rotation to ensure smooth rotation, and the second means uses the elastic body to apply a rotational force in the direction in which the wind direction deflection blade always closes the air outlet. This eliminates the reversal of the wind deflection blade when it passes through the perpendicular line, reduces abnormal vibrations due to backlash after the air outlet is fully closed, and eliminates unnecessary power when the wind deflection blade rotates in the closing direction. becomes smaller.

(Example) Embodiments of the present invention will be described below based on the drawings.

FIG. 3 is a block diagram showing the overall structure of an air conditioner to which an embodiment of the present invention is applied, in which 1 is a compressor that compresses refrigerant;
3 is an outdoor heat exchanger, 3 is an outdoor blower, and compressor 1.
Outdoor heat exchanger 2. The outdoor blower 3 constitutes an outdoor unit 4. 5 is an indoor heat exchanger, and the compressor 1.
Together with the outdoor heat exchanger 2, it constitutes a refrigeration cycle. 6
is an indoor unit, and is composed of a substrate 7, an air outlet 8, and an indoor blower 9. Reference numeral 10 denotes a wind deflecting blade that vertically deflects the wind that has passed through the indoor heat exchanger 5;
is supported by

FIG. 1 is a sectional view of a main part of a first embodiment of the wind deflection device of the present invention, in which a support shaft 11 projects horizontally, rotates together with the wind deflection blade 10, and supports the wind deflection blade 10. In this embodiment, it is integrally formed with the wind direction deflecting blade 10. 12 is a motor that drives the wind direction deflection blade 10 and a torque generating section 13;

This is a small motor composed of a spur gear group 14 that increases and decelerates this torque, and a transmission section 15 that transmits the torque to the wind direction deflection vane lO, which is a support shaft lI of the first embodiment shown in FIG. As shown in the configuration diagram showing the vicinity, a bifurcated elastic body 16 is provided beside the air outlet 8 to constantly provide resistance to the rotation of the support shaft 11.

This elastic body 16 has one end fixed to the side wall next to the air outlet 8 with a screw 17.

Next, the case where the wind direction is deflected according to the first embodiment described above will be explained. Even if the wind direction deflection blade 10 repeatedly moves up and down during cooling and heating, a constant resistance is always applied to the support shaft 11 by the elastic body 16, so that it rotates smoothly. Further, when the center of gravity of the wind direction deflection blade 10 passes through a perpendicular line, a force in the reverse direction is applied to the wind direction deflection blade 10 due to gravity, but the elastic body 1
6 prevents reverse rotation. Furthermore, when the air outlet 8 is completely closed by the wind direction deflection blade 10, the air direction deflection blade 10 hits the lower end 8' of the air outlet 8, which is a stopper, and is stopped.

Even if the motor 12 is further driven to ensure the closure of the air outlet 8, the wind direction will not change even when the rotational torque of the motor I2 fluctuates and becomes smaller because the elastic body 16 applies resistance to the rotating shaft 11. There is no reverse rotation of the deflection blade 10. Therefore, no abnormal vibration occurs.

FIG. 4 is a configuration diagram of the vicinity of the support shaft 11 of the second embodiment of the present invention, in which one end is fixed to the hole 19 of a fixing protrusion 18 integrally provided on the side wall next to the air outlet 8, and A coil spring-like elastic body 21 is provided next to the air outlet 8, the other end of which is fixed to a hole 20 provided in the shaft 11, and which applies a rotational force in a direction in which the wind direction deflecting blade lO always closes the air outlet 8. .

Next, a case will be described in which the wind direction is deflected according to the second embodiment. Even if the wind direction deflection blade 10 repeatedly moves up and down during cooling and heating, the elastic body 21 applies a force to the support shaft II such that the wind direction deflection blade 10 applies a rotational force in the direction of closing the air outlet 8, so that the wind direction deflection is maintained. When the blades 10 rotate in a direction that closes the air outlet 8, the rotational force is small, and when the blades 10 are continuously deflected up and down, the input to the motor 12 is small.

Also, when the center of gravity of the wind direction deflection blade 10 passes through a perpendicular line, a force in the reverse direction is applied to the wind direction deflection blade 10 due to gravity, but 1
Reverse rotation is prevented by the rotational force of the elastic body 21 acting in a direction that closes the air outlet 8. Furthermore, when the air outlet 8 is completely closed by the wind direction deflection blade IO, after the air direction deflection blade IO hits the lower end 8' of the air outlet 8 and stops, the motor 12 may be driven to ensure the closure of the air outlet 8. , an elastic body 2 is attached to the support shaft 11.
Due to the rotational force acting in the direction of closing the air outlet 8, the wind direction deflecting blade 10 does not rotate in the opposite direction, and abnormal vibrations do not occur.

As described above, in the first embodiment, the motor 12 of the wind deflection blade 10 is made smaller by using the spur gear group 14 as a speed reducer, and the rotation of the support shaft 11 of the wind deflection blade 10 is constantly resisted. By providing the elastic body 16 that gives a constant resistance, a constant resistance is always applied to the support -II of the wind direction deflection blade 10, so that when the wind direction deflection blade 10 rotates in the vertical direction, it rotates smoothly.

Further, even if a force in a reverse direction is applied to the wind direction deflection blade 10 due to gravity when the center of gravity of the wind direction deflection blade 10 passes through a perpendicular line, the reverse rotation can be prevented by the resistance of the elastic body 16.

Furthermore, when the air outlet 8 is completely closed by the wind direction deflection blade 10, the air direction deflection blade IO completely closes the air outlet 8, and after the wind direction deflection blade 10 hits the rotation stopper (the lower end 8' of the air outlet 8), the motor 12, abnormal vibrations can be prevented by the resistance of the elastic body 16. Therefore, it is possible to realize a wind direction deflection device for an air conditioner that generates less noise and vibration and does not cause discomfort to the user.

In addition, in the second embodiment, by using the spur gear group 14 as a speed reducer for the motor 12 of the wind direction deflection blade 10, the size can be reduced as in the first embodiment, and the air outlet 8 can be blocked with respect to the wind direction deflection blade 10. By providing the elastic body 21 that always applies a rotational force in the direction, even if the wind direction deflection blade 10 is repeatedly deflected up and down, when the wind direction deflection blade 10 is rotating in the direction that blocks the air outlet 8, the motor 12 Only a small input is required, and the wind direction can be deflected economically.

Further, even if a reverse rotational force acts on the wind direction deflection blade 10 due to gravity when the center of gravity of the wind direction deflection blade IO passes through a perpendicular line, reverse rotation can be prevented by the rotational force in the direction of closing the air outlet 8 of the elastic body 2I. Furthermore, when the air outlet 8 is completely closed by the wind direction deflection blade 10, the air direction deflection blade 10 completely closes the air outlet 8, and after the wind direction deflection blade 10 hits the rotation stopper (the lower end 8' of the air outlet 8), the motor 12, abnormal vibrations can be prevented by the rotational force of the elastic body 21 in the direction of closing the air outlet 8. Therefore, it is possible to realize a wind direction deflection device for an air conditioner that generates less noise and vibration and does not cause discomfort to the user.

(Effects of the Invention) According to the present invention, by using a spur gear in the reducer, the reduction gear can be made smaller than the one using a worm gear. By providing an elastic body that always provides a biasing force that causes the wind deflection blade to rotate in the direction that closes the outlet, the rotational drive of the wind deflection blade performed by the support shaft is smooth and reliable. It is possible to provide a wind direction deflection device for an air conditioner.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the main parts of the first embodiment of the wind direction deflection device for an air conditioner according to the present invention, Fig. 2 is a configuration diagram showing the vicinity of the support shaft of the first embodiment, and Fig. 3 is a sectional view of the main part of the air conditioner according to the present invention. FIG. 4 is a block diagram showing the entire structure of the support shaft and the vicinity of the support shaft according to the second embodiment of the present invention. 1...Compressor, 2...Outdoor heat exchanger, 5...
- Indoor heat exchanger, 8... Air outlet, 9... Indoor blower, 10... Wind direction deflection blade. 11...Support shaft, 12...Motor, 14...
Spur gear group, 16... Elastic body (adds resistance to the rotation of the support shaft), 21 - Elastic body (applies rotational force in the direction of closing the air outlet).

Claims (2)

[Claims] (1) An air outlet that blows out the air that has passed through the heat exchanger, a wind deflection blade that vertically deflects the air blown out from the air outlet, and a fan that supports the wind deflection blade and rotates together with the wind deflection blade. In an air conditioner wind deflection device comprising a support shaft, a motor connected to the support shaft to drive a wind deflection blade, and a speed reducer comprising a group of spur gears provided on the motor, the support shaft is provided with a support shaft. A wind deflection device for an air conditioner, characterized by being provided with an elastic body that constantly provides resistance to rotation of a shaft. (2) An air outlet that blows out the air that has passed through the heat exchanger, a wind deflection blade that vertically deflects the air that is blown out from the air outlet, and a fan that supports the wind deflection blade and rotates together with the wind deflection blade. In an air conditioner wind deflection device comprising a support shaft, a motor connected to the support shaft to drive a wind direction deflection blade, and a reducer consisting of a group of spur gears provided on the motor, the support shaft has a wind direction deflection device. A wind direction deflection device for an air conditioner, characterized in that an elastic body is provided that constantly applies a biasing force that causes a deflection blade to rotate in a direction that closes an air outlet.