JP3458815B2 - Air direction change device for air conditioner - Google Patents

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an air conditioner,
More specifically, it relates to a wind direction changing device provided in an indoor unit of an air conditioner.

[0002]

2. Description of the Related Art An indoor unit of an air conditioner is provided with a wind direction changing device for changing the direction of the air blown from an air outlet. It was adjusted by adjusting the angle of the wind direction changing blades. The structure for mounting the wind direction blade is provided with holes through which the rotary shaft of the wind direction blade is inserted, on both sides of the outlet frame that covers the periphery of the wind direction blade, and the rotary shaft has a structure integrated with the wind direction blade.

Further, Japanese Patent No. 2844984 discloses that
An air-conditioning lateral having a vertical airflow direction change adjusting plate divided into three in the left-right direction is disclosed, and the airflow angle of the left and right airflow direction adjusting plates connected to each other and the airflow angle of the central airflow direction adjusting plate are independent of each other. In addition to the above control, the comfort of the living space is improved by further controlling the direction adjusting plate that adjusts the blowing angle in the left and right directions.

[0004]

However, in the vertical wind direction blade in which the rotating shaft and the wind direction changing blade are integrated with each other,
To attach the rotation axis of the wind direction changing blade to the rotation axis hole provided in the outlet frame that covers the circumference of the wind direction changing blade, slightly bend the wind direction changing blade and insert the rotation axis into the rotation axis hole. Deformation stress remains when deforming the wind direction changing blades due to deformation, the wind direction changing blades are distorted, the wind direction changing blades do not close, and the axis of the rotating shaft is misaligned. Have a problem of shortening the durable life.

Further, in the air conditioner described in Japanese Patent No. 2844984, the left and right wind direction adjusting plates, which are divided by the connecting wind direction plate, are connected, but since they are integrated, they are thermally deformed. When such a problem occurs, there is a problem that repair work becomes expensive because it is necessary to replace the left and right air flow direction adjusting plates and the entire connecting air flow direction plate.

The present invention has been made in view of the above problems of the prior art, and has a simple structure that reduces wind resistance as much as possible and has an improved appearance, is inexpensive, and drives the wind direction changing blades. It is an object of the present invention to provide a wind direction changing device for an air conditioner that improves durability.

[0007]

In order to achieve the above object, the invention according to claim 1 of the present invention is provided between the left and right wind direction changing blades which are separated from each other. A central wind direction changing blade, and a first drive source that integrally installs the left and right wind direction changing blades via a first connecting shaft,
A second drive source that causes the central wind direction changing blade to fluctuate via a second connecting shaft, an outlet frame that supports the wind direction changing blade, and a plurality of support members, and the first and second couplings. Air in which the shafts are arranged in the same straight line, and the first connecting shaft and the second connecting shaft are supported by a plurality of supporting members each having a hole cut out in one direction and an outlet frame. This is a wind direction changing device for a harmony machine.

The invention according to claim 2 is characterized in that the notch holes provided in the supporting housing and the outlet frame are provided in the same direction.

Further, the invention according to claim 3 is characterized in that the cutout portion of the cutout hole provided in the blowout port frame is closed by a part of the front frame which covers the upper surface of the wind direction changing device.

Further, in the invention according to claim 4, a plurality of convex portions are formed on each end surface of the hole provided with the notches of the supporting member and the blowing frame, and the convex portions are part of the outer periphery of the connecting shaft. It is characterized by making point contact with.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an air conditioner C according to the present invention, which includes an underframe 2 mounted on a wall surface of a living space,
A front frame 4 attached to the underframe 2 and a suction grill 6 on the upper surface of the front frame 4. At the lower part of the front frame 4, a blowout port 8 for sending out temperature-controlled air is formed, and the blowout port 8 is closed and changes the temperature-adjusted blowoff air direction of the air when opened. A wind direction changing device A is provided.

As shown in FIGS. 2 and 3, the wind direction changing device A includes a wind direction changing blade 10 for changing the vertical blowing angle and a wind direction changing blade (not shown) for changing the horizontal blowing angle. And have.

The wind direction changing blades 10 are separated into three pieces, and are provided between the left and right wind direction changing blades 12 and 14 connected so as to integrally swing and the left and right wind direction changing blades 12 and 14. The left and right wind direction changing blades 12 and 14 and the central wind direction changing blade 16 that swings independently.

On both sides of the left wind direction changing blade 12, cylindrical connecting portions 18 and 20 projecting laterally from the support plates 17 and the indicating plate 17 at both ends are integrally formed with the wind direction changing blade 12. The left connecting portion 18 is connected to a drive shaft 22a of a drive source (for example, a stepping motor) 22 fixed to the outlet frame 1, while the right connecting portion 20 is connected to one end of a connecting shaft 24. There is. The connecting shaft 24 passes through a plurality of support plates 26 integrally formed with the central airflow direction changing blade 16, and the other end thereof is formed integrally with the right airflow direction changing blade 14 and has a laterally protruding crank shape. It is connected to the connecting residence 28 of.

As shown in FIG. 4, the connecting portion 28 has a cylindrical connecting wand 28a to which the connecting shaft 24 is connected.
And the L-shaped lever 2 that integrally connects the continuous end portion 28a with one of the plurality of support plates 30 of the wind direction changing blade 14.
8b and a space for accommodating the connection house of the central wind direction changing blade 16 is provided between the connection end 28a and the support plate 30.

A connecting portion 32 projecting from the rear surface is integrally formed at one end (right side) of the central airflow direction changing blade 16, and between the connecting portion 32 and the right side support plate 26. A space is provided in the right wind direction changing vane 14 for holding the connected villa 28a of the connecting portion 28. The connecting portion 32 is connected to one end (left side) of the connecting shaft 34,
The connecting shaft 34 penetrates through the support plate 30 of the right airflow direction changing vane 14, and its right end is connected to a drive shaft 36 a of a drive shaft (for example, a stepping motor) 36 fixed to the outlet frame 1.

Since the two connecting shafts 24, 34 are relatively thin and are arranged in the same straight line, the ventilation resistance is small.

The two drive sources 22 and 36 are rotated synchronously or independently under the control of a controller (not shown), but the control contents are not the subject of the present invention. The description is omitted.

Further, the space between the left end support plate 30 of the right wind direction changing root 14 and the connecting portion 28 projecting from the support plate 30 is provided in the center wind direction changing blade 16. It is set to be slightly larger than the lateral length of the connecting portion 32, and similarly, the support plate 26 at the right end of the central airflow direction changing blade 16 and the connecting portion 32 projecting from the right end of the airflow direction changing blade 16 are similarly provided. The space between them is set to be slightly larger than the lateral length of the connecting portion 28 in the right wind direction changing blade 14, so that the connecting portions 28, 3
There is no interference between the two.

Further, the connecting shaft 24 penetrates the support plate 26 of the central airflow direction changing blade 16, but between the penetrating portions of the support plate 26, as shown in FIG. A connecting shaft cover 38 having a shape in which a part of a cylinder is cut away is integrally formed, and most of the connecting shaft 24 is covered with the connecting shaft cover 38, so that the structure is invisible from the outside. Has become.

Similarly, the connecting shaft 34 penetrates the support plate 30 of the right airflow direction changing blade 14, but the same shape as the connecting shaft cover 38 is provided between the penetrating portions of the supporting plate 30. The connecting shaft cover 40 is integrally formed, and most of the connecting shafts 34 appear in the connecting shaft cover 40.

In FIGS. 2 and 3, reference numerals 42 and 44 denote support members for swingably supporting the left and right wind direction changing blades 12, 14, respectively, and 46 denotes a swingable central wind direction changing blade 16. The support member which supports in FIG. The support member 42 is located substantially at the separation portion between the left airflow direction changing blade 12 and the center airflow direction changing blade 16, and the support member 44.
Is the wind direction changing blade 14 on the right side and the wind direction changing blade 16 at the center.
It is located almost at the separation part from. In addition, the support member 46
Is located almost at the center of the central wind direction changing blade 16.

The support members 42, 44 and 46 have holes 42a, 44a and 46a, respectively, which are cut out in one direction, and are connected to the connecting portion 20 and the connecting portion 32 of the wind direction changing blades and the residence 34a of the connecting shaft 34. It has a structure that can be fitted from the same direction perpendicular to the axis.

Similarly, the outlet frame 1 also has holes 1a and 1b which are notched in one direction, and can be assembled to the outlet frame with the wind direction changing blade and the connecting shaft assembled. In addition, shield plates 47 and 48 are attached to the cutout holes 1a and 1b in order to prevent airflow from the cutout holes.

FIG. 6 shows the shielding plates 47 and 48 integrated with a part of the front frame 4 (at a portion 4a). Although it is provided in the front frame in the present invention, it goes without saying that it may be integrated with other components (for example, a decorative plate assembled to the front frame).

FIG. 7 shows that a plurality of convex portions 42b are provided on the end surface of the hole 42a in which the notch of the support member 42 is provided. When the connecting portion 20 of the wind direction changing blade 12 rotates in the cutout hole 42a, the connecting portion comes into point contact with the plurality of convex portions without making surface contact, and frictional noise between the resins is reduced. Also, since the contact resistance is small,
It is possible to use a disturbance source with low torque. This is because the plurality of protrusions are cut out in the support portion analysis 46, 44 to form the holes 4
The same applies when they are provided on 6a and 44a.

[0028]

Since the present invention is constructed as described above, it has the following effects.

According to the first aspect of the present invention, the wind direction changing vanes are separated into three, and the left and right wind direction changing vanes are integrally driven by the first drive source via the first connecting shaft. On the other hand, since the second drive source drives the central wind direction changing blade via the second connecting shaft and the first and second connecting shafts are arranged in the same straight line, wind resistance is reduced as much as possible. be able to.

Further, the horizontal structure of the wind direction changing device is simple and can be manufactured at low cost, and the wind direction changing blade can be repaired separately, which is inexpensive.

Further, since it is not necessary to deform the wind direction changing blade and insert it into the rotary shaft hole provided in the outlet, it is possible to prevent the wind direction changing blade from being opened due to the distortion when the wind direction changing blade is closed. Further, it is possible to prevent a problem that the durability life of the drive source is shortened due to the misalignment of the rotary shaft, and it is possible to improve the durability life of the wind direction changing device.

According to the second aspect of the present invention, the notch direction of the shaft holes 42a, 44a, 46a of the support member for swingably supporting the connecting portion and the connecting shaft of the three airflow direction changing vanes. And the cutout holes 1a, 1b of the outlet frame 1
Since the notch direction of is set to the same direction, it can be assembled in the outlet with the wind direction changing blade and the connecting shaft assembled, so when connecting each connecting part and the connecting shaft, the angle of the axial direction By adjusting, the angle between the left and right wind direction changing blades and the central wind direction changing blade can be adjusted, so that the wind direction changing blade can be surely closed and the gap between the connecting portions can be easily adjusted.

Further, according to the invention of claim 3,
By closing the gaps formed in the cutout holes 1a, 1b of the outlet frame 1 with a part of the front frame, another shielding component is not used, so that the wind direction changing device can be manufactured at low cost.

Further, according to the invention of claim 4, a plurality of convex portions are provided on the end surface of the hole provided with the notch of the supporting member and the blow-out frame so that the connecting shaft and the connecting portion are brought into contact with each other. Is a point contact without making a surface contact, so that the friction noise when the wind direction changing blade is rotated can be reduced.

Further, since the contact resistance is small, it is possible to use a driving source having a small torque.

[Brief description of drawings]

FIG. 1 is a perspective view of an air conditioner including a wind direction changing device according to the present invention.

FIG. 2 is a perspective view of the wind direction changing device according to the present invention.

FIG. 3 is an exploded perspective view of the wind direction changing device of FIG.

FIG. 4 is an enlarged perspective view of the vicinity of an end of one connecting shaft provided in the wind direction changing device of FIG.

5 is an enlarged vertical cross-sectional view of a central airflow direction changing vane provided in the airflow direction changing device of FIG. 2;

FIG. 6 is a schematic view of the assembly of the front frame and the outlet frame.

FIG. 7 is an enlarged perspective view of a support plate.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Blowout port frame 2 Stand frame 4 Front frame 4a Shield shape part 6 Suction grille 8 Blowout ports 10, 12, 14, 16 Wind direction changing blade 17, 26.30 Support plate 18, 20, 28, 32 Connecting part 22, 36 Drive sources 22a, 36a Drive shafts 24, 34 Connection shafts 34a Connection shaft ends 38, 40 Connection shaft covers 42, 44, 46 Support members 1a, 1b, 42a, 44a, 46a Holes 42b provided with notches Convex parts 47 , 48 Shielding plate A Wind direction changing device C Air conditioner

Continuation of the front page (56) References Actual flat 4-64043 (JP, U) Actual flat 2-4154 (JP, U) Actual 53-111657 (JP, U) Actual 53-65658 (JP , U) Actually developed 52-9251 (JP, U) Actually developed 50-105246 (JP, U) Actually developed 60-60637 (JP, U) Patent 2844984 (JP, B2) (58) Fields investigated (58) Int.Cl. ⁷ , DB name) F24F 13/08-13/18

Claims (4)

(57) [Claims] 1. The left and right wind direction changing vanes, the central wind direction changing vane provided between the left and right wind direction changing vanes, and the left and right wind direction changing vanes are integrated via a first connecting shaft. A second drive source for driving the central airflow direction changing blade via a second connecting shaft, a blowout port frame for supporting the airflow direction changing blade, and a plurality of support members. Then, the first and second connecting shafts are arranged on the same straight line, and the first connecting shaft and the second connecting shaft are connected by a plurality of supporting members having holes cut out in one direction and an outlet frame. A wind direction changing device for an air conditioner characterized by supporting a shaft. 2. The wind direction changing device for an air conditioner according to claim 1, wherein the cutout holes provided on both the left and right sides of the support member and the outlet frame are provided in the same direction. 3. The wind direction of the air conditioner according to claim 1, wherein the cutout portion of the cutout hole provided in the outlet frame is closed by a part of the front frame that covers the upper surface of the wind direction changing device. Change device. 4. A support member and a hole provided with a notch in a blow-out frame, each end face having a plurality of protrusions formed therein, and the protrusions are in point contact with a part of an outer periphery of the connecting shaft. An air conditioner wind direction changing device described in.