JPH0526105B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an air conditioner, and more particularly to a wind direction changing device disposed at an air outlet to regulate the direction of air blowing out.

[Conventional technology]

FIG. 8 is a perspective view showing a conventional wind direction changing device disposed at the air outlet of an air conditioner shown in, for example, Utility Model Application No. 51-109409.
1 is a wind direction louver, and this wind direction louver 25 is rotatably supported by a shaft 25a provided protruding from both sides of an air outlet of an air conditioner (not shown). Reference numeral 26 denotes a swinging arm whose one end 26a is rotatably connected to a connecting piece 25b formed on one side of the wind direction louver 25. A crank 16 attached to a rotating motor 15 is connected by an eccentric pin 17. Therefore, when the low-speed rotary motor 15 starts rotating, the crank 16 rotates, and this rotational motion is converted into a reciprocating motion by the swinging arm 26, which is connected to the swinging arm 26 disposed at the air outlet. Wind direction louver 2
5 can be rotated to obtain a desired air blowing angle.

[Problem that the invention seeks to solve]

The conventional air conditioner wind direction changing device is configured as described above, and transmits the reciprocating motion of the swing arm 26 directly to the wind direction louver 25.
Since it is designed to obtain a swing angle of 5,
The wind direction angle by the wind direction louver 25 changes due to variations in the installation of the low-speed rotation motor 15 or poor connection of the connection parts such as the wind direction louver 25, the swing arm 26, and the eccentric pin 17 of the crank 16. In addition to the problem of not being able to blow air, if the wind direction louver 25 is forcibly changed manually or operated incorrectly, a part of the connection part may be damaged or the low-speed rotation motor 1 may be damaged.
There were problems such as damage to gears etc. of No. 5, causing failure.

This invention was made to solve the above-mentioned problems, and provides an air conditioner equipped with a wind direction changing plate that can be adjusted not only automatically but also manually. The purpose is to obtain a wind direction changing device.

[Means for solving problems]

The wind direction changing device for an air conditioner according to the present invention includes:
a wind direction changing plate disposed within the blow-off nozzle, one end of which is rotatably supported by the blow-off nozzle, and a cylindrical portion formed at the other end; and a swinging arm that converts the rotational motion of the shaft into a swinging motion, and the swinging arm is provided with a friction coupling mechanism that slips with the cylindrical portion at a predetermined torque or more.

[Effect]

The wind direction changing device for an air conditioner of the present invention has a structure in which the swing arm is provided with a friction coupling mechanism that slips with the cylindrical part provided on the wind direction changing plate at a predetermined torque or more. The rotational motion is converted into a rocking motion by the rocking arm, is transmitted, and is automatically operated, and by applying a torque of more than a predetermined value to the frictional joint between the rocking arm and the cylindrical part, the joint The swing angle of the wind direction changing plate that causes slip can be manually and forcibly changed.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. In FIG. 1, 1 is an air conditioner, 2 is a conditioned air blowing nozzle disposed below the air conditioner 1, and 3 is an opening 2 of the blowing nozzle 2.
This wind direction changing plate 3 is installed in a.
As can be clearly seen in FIG. 2, support shafts 4 and 5 are fixed to the center portions of both ends, and one support shaft 5 side has a notch 6 on the outer periphery in the axial direction.
A cylindrical portion 7 is integrally formed around the support shaft 5 and surrounding the base portion 5a thereof.
8a is a through hole formed in the side plate 2b of the blow-off nozzle 2, and the support shaft 4 is rotatably supported in this through hole 8a. Also, 8b is the blowout nozzle 2
A through hole is formed in the other side plate 2c with a diameter larger than that of the through hole 8a, and a substantially central portion of a swing arm 10 having a friction coupling mechanism 9 is pivotally supported in this through hole 8b. It's getting old. The swinging arm 10 has a fitting hole 10a into which the support shaft 5 fits in one diameter-reduced end, and is provided with a connecting portion 11 in which a plurality of slits 10b are formed along the axial direction. At the same time, a connecting piece 12 whose end is fixed in a direction perpendicular to the axial direction is provided at the other end, and a long hole 12a is formed in the longitudinal direction of this connecting piece 12. Reference numeral 13 denotes an elastic member such as a leaf spring that is attached to the outer peripheral surface of the connecting portion 11 and acts to tighten the support shaft 5.
is formed into a substantially cylindrical shape, and has flange portions 13a, 13a whose both ends protrude toward the outer circumference.
The flange portions 13a, 13a are press-fitted into a notch 6 formed in the cylindrical portion 7 of the wind direction changing plate 3, and the support shaft 5 fitted into the connecting portion 11 is tightened from the outer periphery of the connecting portion 11. The wind direction changing plate 3 and the swinging arm 10 are frictionally connected. 14 is a drive device, and this drive device 14
consists of a low-speed rotary motor 15 and a crank 16 connected to the low-speed rotary motor 15. The eccentric pin 17 implanted in the crank 16 is inserted into the long hole 12a of the connecting piece 12 of the swing arm 10, and the rotation of the low-speed rotary motor 15 is controlled. The motion is converted into a swinging motion of the swinging arm 10 using the elongated hole 12a, swinging the wind direction changing plate 3 from the horizontal state shown in FIG. 3 to the downward state shown in FIG. The direction of air blowing is regulated.

The present invention is constructed as described above, and a method for assembling the same will be explained next.

First, the support shaft 4 of the wind direction changing plate 3 is inserted and held in the through hole 8a formed in the side plate 2b of the blow-off nozzle 2. Next, the connecting portion 11 of the swinging arm 10 is made to protrude inwardly of the blowing nozzle 2 by penetrating the through hole 8b formed in the side plate 2c of the blowing nozzle 2, and the outer peripheral portion of the protruding connecting portion 11 is made to have elasticity. Attach the member 13 and insert the support shaft 5 of the wind direction change plate 3 into the fitting hole 10 of the connecting part 11.
a, and press fit into the cylindrical part 7 so that the flange parts 13a, 13a of the elastic member 13 attached to the outer periphery of the connecting part 11 match the notch part 6 of the cylindrical part 7, and the cylindrical part 7 and The connecting portion 11 of the swing arm 10 is connected. After that, the eccentric pin 1 of the crank 16 attached to the low-speed rotating motor 15
7 is inserted into the elongated hole 12a of the connecting piece 12 of the swing arm 10, and the low-speed rotary motor 15 is fastened and fixed to the boss portions 18a and 18b provided on the side surface of the blow-off nozzle 2 using screws 19 or the like.

According to the air conditioner wind direction changing device of the present invention configured as described above, the rotation of the low-speed rotary motor 15 causes the eccentric pin 17 of the crank 16 to move through the long hole 12a of the connecting piece 12 attached to the swing arm 10. The rotational motion is converted into a swinging motion of the swinging arm 10, and the swinging arm 10 swings back and forth at a predetermined swinging angle via the connecting piece 12. Further, the connecting portion 11 provided with the slit 10b is connected to the elastic member 13.
The support shaft 5 is tightened and held by the compression action in the radial direction of 11 and between the support shaft 5 and the connecting portion 11, the rotational movement of the drive device transmitted to the swinging arm 10 is reliably caused to swing to the wind direction changing plate 3. It can be communicated as

FIG. 5 shows another embodiment of the present invention, in which the swinging angle of the wind direction changing plate 3 swung by the swiveling arm 10 is regulated within a predetermined range. In the embodiment, a stopper piece 20,
20 is provided to regulate the maximum and minimum inclination positions of the wind direction changing plate 3.
Therefore, according to the above configuration, as shown in FIG.
The wind direction changing plate 3 attempts to repeat the reciprocating rocking motion by converting the rotary motion of the low-speed rotary motor 15 into a rocking angle A by the rocking arm 10, but the stopper pieces 20, 20 provided on the blow-off nozzle 2 The wind direction changing plate 3 comes into contact with the swing angle A, and the swing angle A is regulated to the swing angle B. The difference between the swing angle A of the swing arm 10 and the swing angle B of the wind direction change plate 3 is determined by the support shaft 5 fixed to the wind direction change plate 3, the connection 11, and the elastic member 1.
3 and the connecting portion 11 is smaller than the rotational torque of the low-speed rotating motor 15. A slip occurs between the surface 10a and the outer peripheral surface of the support shaft 5,
Regardless of the swing angle A of the swing arm 10, the swing angle B of the wind direction changing plate 3 can be selected.

FIG. 7 shows another embodiment of the present invention. In this embodiment, a concave groove 21 is formed on the outer circumferential surface of the connecting portion 11 of the swing arm 10 with a reduced diameter. The inner surface of the elastic member 13 to be mounted has a hemispherical projection 2 that engages with the groove 21.
2 are provided, and cut and raised pieces 23, 23 are formed on the flange portions 13a, 13a of the elastic member 13, respectively, which are cut and raised obliquely outward with respect to the axial direction.

According to this embodiment configured in this way, the protrusion 22 of the elastic member 13 is engaged with the groove 21 formed on the outer peripheral surface of the connecting portion 11 and is attached to the connecting portion 11, and the flange portion of the elastic member 13 is attached to the connecting portion 11. 13a, 13
The cut and raised pieces 23 , 23 formed at a are press-fitted into the notch 6 of the cylindrical portion 7 of the wind direction changing plate 3 . Therefore, when the flange portions 13a, 13a of the elastic member 13 are press-fitted into the notch 6, the flange portion 13
The cut and raised pieces 23, 23 of 13a and 13a are cut and bent at an obtuse angle with respect to the press-fitting direction of the notch 6, so they are press-fitted smoothly with the elastic member, but they are not easily pressed in with respect to the pull-out direction. In this case, the tips of the cut and raised pieces 23, 23 are caught on the sliding surface of the notch 6, so it is possible to prevent the wind direction changing plate 3 from coming off from the cylindrical part 7 due to vibration etc. .

The configurations and operations other than those shown in the above-mentioned other embodiments and still further different embodiments are the same as those shown in the embodiments of the present invention, so their explanations will be omitted.

Note that the shape of the elastic member 13 attached to the connecting portion 11 of the swinging arm 10 is not limited to that of the embodiment, and may provide a predetermined frictional resistance when the connecting portion 11 and the support shaft 5 are fitted together. Of course, it is fine as long as it can be done.

〔Effect of the invention〕

As described above, according to the wind direction changing device for an air conditioner according to the present invention, the swing arm is provided with a friction coupling mechanism that slips with the cylindrical portion provided on the wind direction changing plate when the torque exceeds a predetermined torque. The reciprocating swinging motion of the swinging arm can be accurately transmitted to the wind direction changing plate 3 through the device, and during automatic operation of the drive unit, an external force can be manually applied to the wind direction changing plate to forcibly shake the wind direction changing plate. Even when it is moved, a slipping effect occurs at the contact surface between the cylindrical portion of the wind direction changing plate and the swinging arm, which prevents damage to the parts of the drive device and prevents the cause of failure.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a wind direction changing device for an air conditioner showing an embodiment of the present invention, FIG. 2 is an exploded perspective view of the main parts of the wind direction changing device, and FIGS. 3 and 4 are the same wind direction changing device. FIG. 3 is a sectional view of the main part of the airflow direction changing plate, and FIG. 5 is a diagram equivalent to FIG. 2 showing another embodiment of the present invention, FIG. 6 is an explanatory diagram of the operation of FIG. 5, and FIG. 7 is a diagram equivalent to FIG. 2 showing another embodiment of the invention. , FIG. 8 is a perspective view of a main part of a wind direction changing device showing a conventional example of the present invention. 1...Air conditioner, 2...Blowout nozzle, 3...
Wind direction change plate, 4, 5... Support shaft, 6... Notch,
7...Cylindrical part, 9...Frictional coupling mechanism, 10...Swing arm, 10b...Slit, 11...Connection part, 12...Connection piece, 13...Elastic member, 14...
...Drive device, 15...Low speed rotation motor, 16...
Crank, 20...stopper piece, 21...concave groove, 22...protrusion, 23...cut and raised piece. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] 1. A wind direction changing plate disposed within the blow-off nozzle, one end of which is rotatably supported by the blow-off nozzle, and a cylindrical portion formed at the other end; and a swinging arm that is pivotally supported by the drive unit and converts the rotational motion of the drive device into a swinging motion, and the swinging arm is provided with a friction coupling mechanism that slips with the cylindrical portion at a predetermined torque or more. A device for changing the wind direction of an air conditioner. 2. The frictional coupling mechanism consists of a coupling part provided on the swing arm and having a plurality of slits in the axial direction, and a support shaft provided concentrically with the cylindrical part of the wind direction changing plate that is frictionally coupled with the coupling part, and 2. A wind direction changing device for an air conditioner according to claim 1, wherein an elastic member for tightening the connecting portion is attached to the outer periphery of the connecting portion. 3. A wind direction changing device for an air conditioner according to claim 1 or 2, wherein the blow-off nozzle is provided with a stopper that restricts the swing angle of the swing movement of the wind direction changing plate. 4. The air conditioner according to claim 2 or 3, wherein the elastic member is provided with a device to prevent the cylindrical portion of the wind direction changing plate and the connecting portion of the swinging arm from coming off. Change device.