JP5980168B2 - Air conditioner indoor unit - Google Patents

Description

  The present invention relates to an indoor unit of an air conditioner, and more particularly to an indoor unit of an air conditioner having a plurality of vertical air direction adjusting plates.

The up-and-down air direction adjustment plate of the indoor unit of the air conditioner installed on the wall surface of the room is a left-side up-and-down air direction adjustment plate (left flap) and a right-side up-and-down air direction adjustment plate (right flap) arranged side by side at the outlet And have.
The left upper and lower airflow direction adjustment plate (left flap) has a left mounting part fitted to a left pin that is rotatably supported by the left end plate that forms the air outlet, and a central mounting part that forms the air outlet It is rotatably supported by an upper holder that is fixed to the pedestal.

Similarly, the right-side up / down airflow direction adjusting plate (right flap) has a right-side mounting portion fitted to a right pin that is rotatably supported by a right end plate that forms the air outlet, and a center-side mounting portion is The upper holder fixed to the pedestal forming the outlet is rotatably supported.
The left pin is connected to the output shaft of the left stepping motor fixed outside the air passage (outside the left end plate), and the right pin is connected to the right stepping motor fixed outside the air passage (outside the right end plate). It is connected to the output shaft (for example, refer to Patent Document 1).

JP 2003-120994 A (page 3-4, FIG. 3)

In the indoor unit of the air conditioner described in Patent Document 1, since the left flap and the right flap are rotated by the independent left stepping motor and right stepping motor, respectively, the left flap and the right flap are in different postures. It is possible to stop (rotate to a different rotation angle).
However, even when the left and right flaps are set to the same posture (set to the same angle), the rotation angle of the left stepping motor and the rotation angle of the right stepping motor are set to a minute angle due to, for example, variations in the amount of backlash. There is a possibility that an angle shift (for example, about 3 °) may occur. When the angle shift occurs, there is a problem that the designability during driving deteriorates, which may lead to user discomfort and anxiety.

  The present invention has been made to solve the above-described problems. The left flap and the right flap can be stopped at different postures (rotated at different rotation angles), and the left stepping motor can be rotated. Even if there is a variation between the angle and the rotation angle of the right stepping motor, when the left flap and the right flap are stopped in the same posture (rotated to the same rotation angle), there is no angle deviation between them. It is to obtain an indoor unit of an air conditioner that is superior to the above.

An indoor unit of an air conditioner according to the present invention includes a housing having a suction port and a blowout port, a heat exchanger and a blower fan disposed in the housing, and disposed in the blowout port. A plurality of vertical air direction adjustment mechanisms that adjust the blowing direction of the sent air, and the vertical air direction adjustment mechanism includes a wind direction adjustment plate and attachment shafts fixed to both ends of the wind direction adjustment plate, a mounting shaft adjacent one of said upper and lower airflow-direction adjustment mechanism, is fitted notch is formed notch ring connected to the mounting shaft adjacent the other of said upper and lower airflow-direction adjustment mechanism, fitted in notch the fitting cut A protrusion ring formed with a free fitting protrusion is connected, and the notch ring and the protrusion ring are pressed against each other by an elastic body while being supported coaxially and rotatably. That.

  The indoor unit of the air conditioner according to the present invention includes a plurality of vertical wind direction adjustment mechanisms, wherein a fitting notch is formed and a notch ring and a protruding ring in which a fitting protrusion that can enter the fitting notch is formed. Since these are connected via the two, they are rotated together with the fitting protrusion entering the fitting notch. Therefore, even if there is a variation in the rotation angle (rotation angle of the stepping motor) that drives both of them, the adjacent wind direction adjusting plates rotate by the same rotation angle, so there is no angle deviation between the adjacent wind direction adjusting plates. An indoor unit of an air conditioner with excellent design can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS The indoor unit of the air conditioner concerning Embodiment 1 of this invention is demonstrated, Comprising: FIG. 1 is a perspective view which decomposes | disassembles and shows the whole structure. BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing of the side view which demonstrates the indoor unit of the air conditioner which concerns on Embodiment 1 of this invention, and shows the whole. The perspective view which shows the left-right wind direction adjustment mechanism of the indoor unit of the air conditioner shown in FIG. The perspective view which shows the up-and-down wind direction adjustment mechanism of the indoor unit of the air conditioner shown in FIG. The perspective view which shows the left end part of the front left up-and-down wind direction adjustment mechanism of the indoor unit of the air conditioner shown in FIG. The perspective view which shows the center part of the left front up-and-down wind direction adjustment mechanism of the indoor unit of the air conditioner shown in FIG. The perspective view which isolate | separates and shows the member which comprises the center support part of the indoor unit of the air conditioner shown in FIG. The perspective view which expands and shows a part of member which comprises the center support part of the indoor unit of the air conditioner shown in FIG. Sectional drawing which expands and shows the center support part of the indoor unit of the air conditioner shown in FIG. The perspective view which shows the indoor unit of the air conditioner shown in FIG. 2, and shows the point which attaches a front left up-down vertical air direction adjustment mechanism to an indoor unit. The front view which shows the indoor unit of the air conditioner shown in FIG. 2, and shows the state with which the left front up-and-down wind direction adjustment mechanism and the right front up-and-down wind direction adjustment mechanism were connected. 2A and 2B illustrate an indoor unit of the air conditioner shown in FIG. 2, in which FIG. 2A is a side view showing a difference in rotation angle between left and right wind direction adjusting plates, and FIG. The side view which expands and shows a difference, (c) is a front view which shows the relationship between the left front fitting protrusion and the right front fitting notch.

[Embodiment 1]
1 and 2 illustrate an indoor unit of an air conditioner according to Embodiment 1 of the present invention. FIG. 1 is an exploded perspective view showing the entire configuration, and FIG. 2 shows the whole. It is sectional drawing of a side view. Each figure (including the following figures) is schematically shown, and the present invention is not limited to the illustrated form.

(Air conditioner indoor unit)
In FIG. 1, an air conditioner indoor unit (hereinafter referred to as “indoor unit”) 100 includes a base 7, a heat exchanger 5, a blower fan 6, an electrical component box 4, a drain pan assembly 3, a housing 2, It has a front design panel 1 that can be opened and closed and removed. The front design panel 1 is attached to the housing 2, and the housing 2 is fixed to the base 7 with screws. The heat exchanger 5, the blower fan 6, the electrical component box 4, and the drain pan assembly 3 are mounted on the base 7. Moreover, although the filter automatic cleaning unit 8 for automatically cleaning the filter covering the upper part of the heat exchanger 5 is installed, the filter automatic cleaning unit 8 may not be installed.

(Drain pan assembly)
In FIG. 2, the air passage from the suction port 2 a formed on the upper surface of the housing 2 to the air outlet 2 b formed on the lower surface of the housing 2 is formed by the blower fan 6 and is sucked from the suction port 2 a. The air is heat-exchanged by the heat exchanger 5 and is conditioned air (cold air or warm air) and blown into the room from the air outlet 2b.
The drain pan assembly 3 has an upper surface 3a formed in a bowl shape, and functions as a drain pan portion that receives drain water dripped from the heat exchanger 5. The lower surface 3b forms a part of the air outlet 2b. That is, the air outlet 2b is formed by the lower surface 3b of the drain pan assembly 3 on the front side, the casing 2c on the rear side, and the left end plate 40L and the right end plate 40R (see FIGS. 3 and 4) on the left and right sides.
Note that “left side, right side” means left and right when the indoor unit 100 is viewed from the front for convenience of explanation, but may mean left and right when the indoor unit 100 is viewed from the rear. Good.

(Left and right wind direction adjustment mechanism)
FIG. 3 is a perspective view illustrating a part of the indoor unit of the air conditioner according to Embodiment 1 of the present invention (left and right wind direction adjusting mechanism). In addition, FIG. 3 has shown the state which removed the up-and-down wind direction adjustment mechanism mentioned later.
In FIG. 3, a left / right airflow direction adjusting mechanism 30 that adjusts the right / left direction (horizontal direction) of the conditioned air is installed on the upstream side of the air outlet 2b (position close to the blower fan 6). That is, the left / right wind direction adjusting mechanism 30 includes a left horizontal wind direction adjusting mechanism 30L on the left side and a right horizontal wind direction adjusting mechanism 30R on the right side that are installed on the lower surface 3b of the drain pan assembly 3.

  The left horizontal wind direction adjustment mechanism 30L on the left side is connected to a plurality of wind direction adjustment plates (flaps) 31L rotatably installed on the lower surface 3b and a plurality of horizontal wind direction adjustment plates 31L and is moved horizontally in the left-right direction. A wind direction adjusting connecting rod 32L and a wind direction adjusting drive unit (not shown) housed in the left end plate 40L (outside the air outlet 2b) are provided. Then, the horizontal wind direction adjusting connecting rod 32L moves in the left-right direction, whereby the horizontal wind direction adjusting plate 31L rotates and the blowing direction of the conditioned air is adjusted.

  Similarly, the right horizontal wind direction adjustment mechanism 30R on the right side is connected to a plurality of wind direction adjustment plates (flaps) 31R rotatably installed on the lower surface 3b and a plurality of horizontal wind direction adjustment plates 31R and moves in the left-right direction. A horizontal wind direction adjusting connecting rod 32R, and a wind direction adjusting drive unit (not shown) housed in the right end plate 40R (outside the air outlet 2b). When the horizontal wind direction adjustment connecting rod 32R moves in the left-right direction, the horizontal wind direction adjustment plate 31R rotates, and the blowing direction of the conditioned air is adjusted.

(Up / down wind direction adjustment mechanism)
FIG. 4 is a perspective view illustrating a part of the indoor unit of the air conditioner according to Embodiment 1 of the present invention (up and down wind direction adjusting mechanism).
In FIG. 4, a vertical air direction adjusting mechanism 20 is installed at the air outlet 2b. The vertical wind direction adjusting mechanism 20 is disposed on the left side on the front side of the housing 2 on the left side (front design panel 1 side) and the left front vertical wind direction adjusting mechanism 20LF on the left side and on the rear surface side of the housing 2 (casing 2c side). Left rear up / down air direction adjusting mechanism 20LR, right front up / down air direction adjusting mechanism 20RF arranged on the front side of the housing 2 on the right side (front design panel 1 side), and rear side of the housing 2 on the right side (casing 2c side). And a right rear up / down airflow direction adjusting mechanism 20RR arranged at the right side.

At this time, the left front up / down air direction adjusting mechanism 20LF and the right front up / down air direction adjusting mechanism 20RF have a plane symmetrical shape, and the left rear up / down air direction adjusting mechanism 20LR and the right rear up / down air direction adjusting mechanism 20RR have a plane symmetrical shape. Since the left front up / down wind direction adjusting mechanism 20LF and the left rear up / down air direction adjusting mechanism 20LR have the same structure, the left front up / down air direction adjusting mechanism 20LF will be described below.
Therefore, the members (parts) forming the right front up / down air direction adjusting mechanism 20RF, the left rear up / down air direction adjusting mechanism 20LR, and the right rear up / down air direction adjusting mechanism 20RR are the same as the members (parts) forming the left front up / down air direction adjusting mechanism 20LF. This is the same as the name modifier and the code number “left front, LF” replaced with “right front, RF”, “left rear, LR”, and “right rear, RR”, respectively.

(Left front vertical wind direction adjustment mechanism)
5 and 6 illustrate the indoor unit of the air-conditioning apparatus according to Embodiment 1 of the present invention, and FIG. 5 is a perspective view showing a left end portion of a part (left front up / down wind direction adjusting mechanism). FIG. 6 is a perspective view showing a central portion of a part (the left front up / down wind direction adjusting mechanism).

5 and 6, the left front up / down wind direction adjusting mechanism 20LF includes a left front wind direction adjusting plate 21LF which is a plate having an arc cross section, a left front end mounting arm 22LF fixed to the end of the left front wind direction adjusting plate 21LF, A front left end bearing 23LF provided at the front end of the front end attachment arm 22LF and having a Y-shaped through hole, a left front center attachment arm 24LF fixed to the center of the left front wind direction adjusting plate 21LF, and a left front center A front left wind direction adjusting plate bearing 25LF provided with a through hole having a cross-section in the cross section.
Further, a left front wind direction adjusting plate guide portion 26LF having an arcuate cross section is formed on the center side (right front wind direction adjusting plate 21RF side) of the left front center side mounting arm 24LF.

(Left front end mounting shaft)
In FIG. 5, a left front stepping motor 41LF is installed in a space covered by the left end plate 40L (outside the air outlet 2b), and the left front output shaft 42LF of the left front stepping motor 41LF is not rotatable relative to the left front motor connecting component 43LF. It is connected.
The outer periphery of the left front motor connection component 43LF is supported by the left front motor connection bearing 44LF formed on the left end plate 40L so as to be rotatable and cannot be pulled out to the outlet 2b. The range on the center side of the left front motor connection component 43LF is It protrudes toward the air outlet 2b. At this time, the range which protruded to the blower outlet 2b side is formed in the cross-section Y character. Hereinafter, the range formed in such a Y-shaped section is referred to as “left front end side mounting shaft 45LF”.

(Left front center mounting shaft)
In FIG. 6, a left front slide groove 27LF parallel to the left-right direction is formed at a position closer to the left front end attachment arm 22LF than the left front center attachment arm 24LF of the left front wind direction adjusting plate 21LF, and the left front slide piece is placed in the left front slide groove 27LF. 28LF is installed so that it is movable and cannot be pulled out (to be exact, it cannot be easily pulled out).
The left front slide piece 28LF has an L shape having a slide portion that slides in the left front slide groove 27LF and a rising portion that rises perpendicularly to the slide portion. A left front center mounting shaft 29LF having an inner surface shape is fixed. The left front center-side attachment shaft 29LF enters the left front wind direction adjusting plate bearing 25LF so as to freely advance and retreat, and is supported by a center support portion 50 (more precisely, the left center support portion 50L) described later.

(Configuration of central support)
7 to 9 illustrate the indoor unit of the air conditioner according to Embodiment 1 of the present invention, and FIG. 7 is a perspective view separately showing members constituting a part (center support portion). FIGS. 8A and 8B are enlarged perspective views showing a part of a part (center support part), and FIG. 9 is an enlarged view of a part (center support part). It is sectional drawing.

In FIG. 7, the center support part 50 is formed of a left center support part 50L and a right center support part 50R.
The left center support portion 50L includes a left center support base 51L installed on the lower surface 3b of the drain pan assembly 3, a left front center support arm 52LF and a left rear center support arm 52LR erected on the left center support base 51L, and a left front A left front center support bearing 53LF and a left rear center support bearing 53LR provided at the tip of the center support arm 52LF and the tip of the left rear center support arm 52LR, respectively.
Similarly, the right center support portion 50R includes a right center support base 51R that contacts the lower surface 3b of the drain pan assembly 3, a right front center support arm 52RF and a right rear center support arm 52RR that are erected on the right center support base 51R. A right front center support bearing 53RF and a right rear center support bearing 53RR provided at the tip of the right front center support arm 52RF and the tip of the right rear center support arm 52RR, respectively.

(Left front ring)
In FIG. 8A, the left front ring (same as the projection ring) 70LF is installed on the left front center support bearing 53LF, and slides on the inner periphery of the left front center support bearing 53LF. And a left front elastic body arrangement portion 72LF and a left front cylindrical portion 73LF which are smaller in outer diameter than the left front sliding portion 71LF and are formed on both sides of the left front sliding portion 71LF.
A left front bearing 74LF into which the left front center-side mounting shaft 29LF of the left front vertical airflow direction adjusting mechanism 20LF can enter (insert) is formed on the inner surface of the left front elastic body arrangement portion 72LF. Further, a triangular left front fitting protrusion 75LF is formed on the outer periphery of the left front cylindrical portion 73LF so as to be continuous with the left front sliding portion 71LF and to have a continuous portion with the left front sliding portion 71LF as a bottom.
A left rear ring 70LR having the same shape as the left front ring 70LF is installed on the left rear center support bearing 53LR (not shown).

(Right front ring)
In FIG. 8B, a right front ring (same as a notch ring) 80RF is installed on the right front center support bearing 53RF and slides on the inner periphery of the right front center support bearing 53RF. 81RF and a right front cylindrical portion 82RF having an outer diameter smaller than that of the right front sliding portion 81RF and formed on a side surface of the right front sliding portion 81RF. A right front bearing 84RF is formed on the inner surface of the right front cylindrical portion 82RF so that a mounting shaft 29RF (not shown) near the right front center of the right front up / down airflow direction adjusting mechanism 20RF can enter (insert). Further, a right front connecting sliding portion 83RF on which the outer surface of the left front cylindrical portion 73LF of the left front ring 70LF slides is formed on the right front sliding portion 81RF.
Further, the right front sliding portion 81RF of the right front ring 80RF includes a left front ring 70LF with the outer surface of the left front cylindrical portion 73LF sliding on the right front connection sliding portion 83RF (inner surface) of the right front ring 80RF. A front right fitting notch 85RF having a triangular shape is formed in a front view through which the fitting protrusion 75LF can freely enter.

In FIG. 9, the left center support portion 50L and the right center support portion 50R are in contact with each other with the left center support portion 50L and the right center support portion 50R installed on the lower surface 3b (not shown) of the drain pan assembly 3. ing. At this time, since the axis of the left front center support bearing 53LF coincides with the axis of the right front center support bearing 53RF, the axis of the left front bearing 74LF of the left front ring 70LF arranged in the former and the right front ring arranged in the latter The axis of the 80RF right front bearing 84RF coincides.
These axial centers are located on a straight line connecting the axial center of the left front end mounting shaft 45LF (see FIG. 5) and the right front end mounting shaft 45RF (not shown).
Similarly, the shaft center of the left rear bearing 74LR, the shaft center of the right rear bearing 84LR, the shaft center of the left rear end mounting shaft 45LR, and the shaft center of the right rear end mounting shaft 45RR are on the same straight line. Located (none shown).

(Left front elastic body)
A left front flange 54LF that protrudes to the inner peripheral side is formed at an end of the left front center support bearing 53LF closer to the left front end mounting arm 22LF, and a left front elastic body (coil spring) 60LF and a left front are formed inside the left front center support bearing 53LF. A ring 70LF is arranged. Further, a right front flange 54RF that protrudes to the inner peripheral side is formed in the middle of the right front center support bearing 53RF in the axial direction, and a right front ring 80RF is installed inside the right front center support bearing 53RF.
The left front elastic body 60LF is arranged inside the left front center support bearing 53LF so as to surround the outer periphery of the left front elastic body arrangement portion 72LF, and the axial direction is between the left front flange 54LF of the left front center support bearing 53LF and the left front ring 70LF. The left front ring 70LF is always pressed against the right front ring 80RF by being sandwiched between the left front sliding portion 71LF.

At this time, the left front fitting protrusion 75LF of the left front ring 70LF and the right front fitting notch 85RF of the right front ring 80RF are formed in a V-shaped similarity (the front end angle of the former is the same as the opening angle of the latter). Therefore, the left front fitting protrusion 75LF enters the right front fitting notch 85RF, and no gap is generated between them. Further, when the left front fitting protrusion 75LF does not enter the right front fitting notch 85RF, the tip of the left front fitting protrusion 75LF is pressed against the end surface of the right front sliding portion 81RF.
Instead of the left front elastic body 60LF, or together with the left front elastic body 60LF, an elastic body may be disposed on the right front ring 80RF. That is, an elastic body (for example, a coil spring) is provided so as to surround the right front cylindrical portion 82RF inside the right front center support bearing 53RF and sandwiched between the end surface of the right front sliding portion 81RF and the right front center support bearing 53RF. You may arrange.

(Installation of the left front up / down wind direction adjustment mechanism)
FIG. 10 is a perspective view for explaining the indoor unit of the air-conditioning apparatus according to Embodiment 1 of the present invention and showing a procedure for attaching a part (the left front vertical airflow direction adjusting mechanism) to the indoor unit.
The procedure for attaching the left front up / down wind direction adjusting mechanism 20LF to the indoor unit 100 is as follows. First, the left front end projecting from the left end plate 40L to the left front end side bearing 23LF provided on the left front end attaching arm 22LF of the left front up / down air direction adjusting mechanism 20LF. The offset mounting shaft 45LF is inserted (see FIG. 5).

Next, the left front wind direction adjustment plate guide portion 26LF is pressed against the outer periphery of the left front center support bearing 53LF of the left center support portion 50L in a state where the left front center side mounting shaft 29LF is inserted into the left front wind direction adjustment plate bearing 25LF (see FIG. 10). ). Then, the shaft center of the left front center-side attachment shaft 29LF of the left front up / down airflow direction adjusting mechanism 20LF and the shaft center of the left front bearing 74LF of the left front ring 70LF supported by the left center support portion 50L coincide.
Therefore, by moving the left front slide piece 28LF in the right direction, the left front center-side attachment shaft 29LF is inserted (inserted) into the left front bearing 74LF, and the attachment of the left front up / down wind direction adjusting mechanism 20LF is completed.

  Similarly, with respect to the right front up / down wind direction adjusting mechanism 20RF, the right front center mounting shaft 29RF is inserted into the right front bearing 84RF of the right front ring 80RF with the right front end mounting shaft 45RF inserted into the right front end bearing 23RF ( Insertion) to complete the attachment of the right front up / down wind direction adjusting mechanism 20RF (not shown).

  Then, the left front up / down wind direction adjusting mechanism 20LF and the right front up / down air direction adjusting mechanism 20RF are connected via the left front ring 70LF and the right front ring 80RF pressed against each other by the left front elastic body 60LF. At this time, the left front fitting protrusion 75LF enters the right front fitting notch 85RF, and no gap is generated between them.

(Rotation of left front up / down air direction adjustment mechanism and right front up / down air direction adjustment mechanism)
FIG. 11 illustrates the indoor unit of the air conditioner according to Embodiment 1 of the present invention, and shows a state in which a part (the left front up / down air direction adjusting mechanism and the right front up / down air direction adjusting mechanism) is connected. It is a front view.
In FIG. 11, with the left front fitting protrusion 75LF intruding into the right front fitting notch 85RF, the phase of the left front center mounting shaft 29LF (left front bearing 74LF) of the cross section and the right front center mounting shaft 29RF (right front) of the cross section cross. The phase of the bearing 84RF) matches.

Therefore, when the left front up / down air direction adjusting mechanism 20LF and the right front up / down air direction adjusting mechanism 20RF are rotationally driven by the same angle, the rotation angle of the left front stepping motor 41LF and the rotation angle of the right front stepping motor 41RF are slightly shifted due to variations. Even so, the left front up / down wind direction adjusting mechanism 20LF and the right front up / down air direction adjusting mechanism 20RF rotate by the same angle, and the phases of the two after rotation coincide with each other.
Similarly, the left rear up / down air direction adjusting mechanism 20LR and the right rear up / down air direction adjusting mechanism 20RR are also rotated by the same angle, and the two phases after the rotation are the same. That is, since an angle shift does not occur between the two, the indoor unit 100 excellent in design is obtained.

  On the other hand, when the left front up / down airflow direction adjusting mechanism 20LF and the right front up / down airflow direction adjusting mechanism 20RF are rotationally driven by different angles while the left front fitting protrusion 75LF enters the right front fitting notch 85RF, the left front elastic body 60LF is By being compressed, the left front fitting protrusion 75LF escapes from the right front fitting notch 85RF, and the tip of the left front fitting protrusion 75LF slides on the end surface of the right front sliding portion 81RF. The right front up / down wind direction adjusting mechanism 20RF is rotated by different angles. Therefore, it becomes possible to blow out conditioned air in different directions in the vertical direction in each of the left and right directions of the air outlet 2b of the indoor unit 100.

(Right front mating notch opening angle)
FIG. 12 explains the indoor unit of the air conditioner according to Embodiment 1 of the present invention, and FIG. 12 (a) is a side view showing the difference in rotation angle between the left and right wind direction adjusting plates. 12B is an enlarged side view showing the difference between the rotation angles of the left and right wind direction adjusting plates, and FIG. 12C is a front view showing the relationship between the left front fitting protrusion and the right front fitting notch. .
In FIGS. 12A and 12B, when setting the difference in rotation angle between the left front wind direction adjusting plate 21LF and the right front wind direction adjusting plate 21RF to “ψ (psi)”, the left front center-side mounting shaft 29LF and the right front center The rotation angle with the offset mounting shaft 29RF is different by “ψ”.

  Then, in order for the indoor unit 100 to be able to set the difference in rotation angle between the left front wind direction adjusting plate 21LF and the right front wind direction adjusting plate 21RF to the minimum angle “ψ”, only the angle corresponding to the minimum angle “ψ” When the center of the left front fitting protrusion 75LF is displaced from the center of the right front fitting notch 85RF, it is necessary to prevent the left front fitting protrusion 75LF from being pulled into the right front fitting notch 85RF ((c) of FIG. 12). reference).

  That is, when the slight deviation caused by the variation in the rotation angle between the left front stepping motor 41LF and the right front stepping motor 41RF is smaller than the minimum angle “ψ”, the left front stepping motor 41LF and the right front stepping motor 41RF are set to the same angle. When rotated, the left front fitting protrusion 75LF is pulled into the right front fitting notch 85RF. For this reason, variations in the rotation angle of the left front stepping motor 41LF and the like are absorbed, and the left front wind direction adjusting plate 21LF and the right front wind direction adjusting plate 21RF rotate by the same angle. Therefore, the opening angle “θ” is the magnitude of the variation in the rotation angle of the left front stepping motor 41LF and the right front stepping motor 41RF, and the set minimum value of the difference between the rotation angles of the left front wind direction adjustment plate 21LF and the right front wind direction adjustment plate 21RF. Determined by.

  In the above description, the inner surface of the left front end bearing 23LF and the outer surface of the left front end mounting shaft 45LF are Y-shaped in cross section, and the inner surface of the left front wind direction adjusting plate bearing 25LF and the outer surface of the left front center mounting shaft 29LF are cross sections. Although the present invention is shown, the present invention is not limited to this, and the cross-sectional shape is not limited as long as the bearing and the mounting shaft are connected so as not to rotate relatively. For example, it may be a cross-sectional circle or a quadrangular cross-section, or a cross-sectional circle having a key groove that is recessed into one outer surface and a key that protrudes from the other outer surface.

In the above description, the vertical wind direction adjusting mechanism 20 includes a total of four units, two in the left-right direction and two in the front-rear direction, but the present invention is not limited to this, and the left-right direction Three up / down wind direction adjusting mechanisms may be provided.
At this time, for example, a central front up / down air direction adjusting mechanism (not shown) is provided between the left front up / down air direction adjusting mechanism 20LF and the right front up / down air direction adjusting mechanism 20RF. In addition, a right front center-side mounting shaft 29RF and a left front center-side mounting shaft 29LF are respectively installed at both ends of the center front up / down air direction adjusting mechanism.

  DESCRIPTION OF SYMBOLS 1 Front design panel, 2 housing | casing, 2a suction inlet, 2b blower outlet, 2c casing, 3 drain pan assembly, 3a upper surface, 3b lower surface, 4 electrical component box, 5 heat exchanger, 6 ventilation fan, 7 base, 8 Automatic filter cleaning unit, 20 vertical wind direction adjustment mechanism, 20LF left front vertical wind direction adjustment mechanism, 20LR left rear vertical wind direction adjustment mechanism, 20RF right front vertical wind direction adjustment mechanism, 20RR right rear vertical wind direction adjustment mechanism, 21LF left front wind direction adjustment plate, 21RF right front wind direction Adjustment plate, 22LF Left front end mounting arm, 23LF Left front end bearing, 24LF Left front end mounting arm, 25LF Left front wind direction adjustment plate bearing, 25RF Right front wind direction adjustment plate bearing, 26LF Left front wind direction adjustment plate guide, 27LF Left front slide groove, 28LF Left front slide piece, 29LF Left front center mounting shaft, 29RF Right Center mounting shaft, 30 left and right wind direction adjusting mechanism, 30L left horizontal wind direction adjusting mechanism, 30R right horizontal wind direction adjusting mechanism, 31L horizontal wind direction adjusting plate, 31R horizontal wind direction adjusting plate, 32L horizontal wind direction adjusting connecting rod, 32R horizontal wind direction adjusting connecting rod , 40L Left end plate, 40R Right end plate, 41LF Left front stepping motor, 41RF Right front stepping motor, 42LF Left front output shaft, 43LF Left front motor connection parts, 44LF Left front motor connection bearing, 45LF Left front end mounting shaft, 45LR Left rear end mounting shaft , 45RF Right front end mounting shaft, 45RR Right rear end mounting shaft, 50 center support portion, 50L left center support portion, 50R right center support portion, 51L left center support base, 51R right center support base, 52LF left front center support arm , 52LR Left rear center support arm, 52RF Right Center support arm, 52RR right rear center support arm, 53LF left front center support bearing, 53LR left rear center support bearing, 53RF right front center support bearing, 53RR right rear center support bearing, 54LF left front flange, 54RF right front flange, 60LF left front elastic body, 70LF Left front ring, 70LR Left rear ring, 71LF Left front sliding part, 72LF Left front elastic body arrangement part, 73LF Left front cylindrical part, 74LF Left front bearing, 74LR Left rear bearing, 75LF Left front fitting protrusion, 80RF Right front ring, 81RF Right front sliding Part, 82RF right front cylindrical part, 83RF right front connecting sliding part, 84LF left front bearing, 84LR left rear bearing, 84RF right front bearing, 85RF right front fitting notch, 100 air conditioner indoor unit (indoor unit).

Claims (3)

A housing having a suction port and an air outlet, a heat exchanger and a blower fan arranged in the housing, and a plurality of air holes arranged at the air outlet and adjusting the blowing direction of air sent by the blower fan An up-and-down wind direction adjustment mechanism,
The vertical wind direction adjusting mechanism includes a wind direction adjusting plate and attachment shafts fixed to both ends of the wind direction adjusting plate,
A notch ring in which a fitting notch is formed is connected to the mounting shaft of one of the adjacent vertical wind direction adjusting mechanisms,
A projection ring formed with a fitting projection that can be fitted into the fitting notch is connected to the mounting shaft of the other adjacent vertical airflow direction adjusting mechanism,
An indoor unit of an air conditioner, wherein the notch ring and the projecting ring are pressed against each other by an elastic body in a state of being supported coaxially and rotatably. In a state where the fitting protrusion is inserted into the fitting notch, the adjacent wind direction adjusting plate of the vertical air direction adjusting mechanism is integrally rotated by the same rotation angle,
2. The air conditioner according to claim 1, wherein the fitting protrusions have escaped from the fitting notches, and the air direction adjusting plates of the adjacent vertical air direction adjusting mechanisms rotate by different rotation angles. Indoor unit. The up / down air direction adjusting mechanism is a left up / down air direction adjusting mechanism and a right up / down air direction adjusting mechanism, and includes a left center supporting portion that supports the left up / down air direction adjusting mechanism and a right center supporting portion that supports the right up / down air direction adjusting mechanism. Equipped,
The left up / down wind direction adjusting mechanism includes a left wind direction adjusting plate, a left end mounting arm fixed to the end of the left wind direction adjusting plate, a left end bearing provided at a tip of the left end mounting arm, and the left Left center-side mounting arm fixed near the center of the wind direction adjusting plate, left center-side bearing provided at the tip of the left center-side mounting arm, and left center-side mounting that penetrates the left center-side bearing so as not to rotate The left center support portion includes a left ring that is the protruding ring into which the left center-side mounting shaft is non-rotatably fitted , a left center support bearing that rotatably holds the left ring, A left elastic body for urging the left ring in the center direction in the left center support bearing,
The right up / down wind direction adjusting mechanism includes a right wind direction adjusting plate, a right end mounting arm fixed near the end of the right wind direction adjusting plate, a right end bearing provided at a tip of the right end mounting arm, and the right Right-center-side mounting arm fixed to the center of the wind direction adjusting plate, right-center-side bearing provided at the tip of the right-center-side mounting arm, and right-center-side mounting that passes through the right center-side bearing so as not to rotate A shaft,
The right center support portion includes a right ring that is the cut-out ring into which the right center-side mounting shaft is non-rotatably fitted, and a right center support bearing that rotatably holds the right ring,
The left center support bearing and the right center support bearing are coaxial, and the left ring is pressed against the right ring by the left elastic body,
The right ring is formed with a V-shaped right fitting notch that indents in the axial direction,
The air conditioning according to claim 1 or 2, wherein the left ring is formed with a V-shaped left fitting projection that protrudes in the axial direction and can be fitted into the right fitting notch. Indoor unit of the machine.

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