JP7258642B2 - Wind direction adjusters and indoor units for air conditioners - Google Patents

Description

TECHNICAL FIELD Embodiments of the present invention relate to a device (wind direction adjusting device) that adjusts the direction of air blown out from a blower, and an indoor unit of an air conditioner that includes the wind direction adjusting device.

For example, a floor-standing air conditioner has an indoor unit installed on the floor of a building. The indoor unit has a housing that is partitioned into a heat exchange chamber and a blower chamber. A heat exchanger that exchanges heat between refrigerant and air is arranged in the heat exchange chamber. A blower is arranged in the blower chamber. An air suction port and an air outlet are provided on the front side (the side facing the indoor space) of the housing. Air in the indoor space is sucked into the blowing chamber through the suction port by the blower and is discharged into the heat exchange chamber. The air discharged into the heat exchange chamber is temperature-controlled by the heat exchanger, and then blown into the room from the outlet.

The air outlet is provided with a wind direction adjusting device that adjusts the direction (air direction) of the air that is blown into the room. The wind direction adjusting device adjusts the direction of the wind from the outlet by, for example, rotating the blades. For example, the horizontal wing is a flat piece of plate parallel to a horizontal plane such as a floor, and adjusts the blowing angle of the wind with respect to the horizontal plane. As a result, the temperature-controlled air is blown out from the outlet at a desired angle in the vertical direction (vertical direction).

JP-A-2005-61734 JP 2018-185122 A

As an example, the horizontal blades are fixed in position and maintained at a desired tilt angle by rotatably supporting the shaft provided on the horizontal blades on a support portion of a frame attached to the outlet. For this reason, a structure in which a load is applied to each of the shaft portion and the support portion has been adopted in order to provide frictional resistance to the shaft portion. Specifically, the shaft diameter of the shaft portion is made larger than the span diameter of the bearing portion of the support portion, and a rubber tube is attached to the shaft portion. All of these have a structure in which internal stress is generated in the bearing portion of the supporting portion. Therefore, a measure is required to suppress the generation of such stress and to suppress aged deterioration of the supporting portion, for example, solvent cracks in an atmosphere of soot.

In addition, if the interval at which the horizontal wing is supported by the supporting portion is widened, the material of the horizontal wing may shake due to vibration, or the horizontal wing may flex due to its own weight. In this case, for example, by providing the frame with a strut that supports the horizontal wing in the middle of the support interval of the support portion, it is possible to suppress the swinging and bending of the horizontal wing. However, when such struts are provided, it is necessary to reduce external shocks acting on the struts themselves, the frame, the horizontal wings, and the like via the struts.

SUMMARY OF THE INVENTION An object of the present invention is to provide a wind direction adjusting device capable of protecting horizontal blades, struts, etc. and improving durability, and an indoor unit of an air conditioner equipped with the wind direction adjusting device.

According to the embodiment, the wind direction adjusting device is a device that adjusts the direction of the wind blown out from the blower , and has a pair of vertical frame portions facing each other and a pair of horizontal frame portions facing each other. A rectangular frame , a plurality of flat blades extending in a predetermined direction and arranged in parallel at predetermined intervals, a support member provided on the frame for supporting the blades, and a plurality of blades rotating. and movable members operably connected to each other and displaceable relative to the support member. The wing plate has shafts arranged at predetermined intervals in the direction of elongation. The support member rotatably supports the shaft portion and has a bearing portion having a diameter across the shaft portion that is larger than the shaft diameter of the shaft portion. The support member and the movable member have a positioning mechanism that positions the movable member with respect to the support member while the shaft portion is supported by the bearing portion. The support members include a first support member and a second support member arranged with a predetermined interval in the extending direction of the pair of lateral frame portions of the frame, and a second support member arranged substantially in the middle of the interval between these support members. 3 support members. The third support member spans between the pair of lateral frame portions of the frame. One end of the third support member in the bridging direction is provided with a first attachment portion that is attached to one of the pair of horizontal frame portions so as not to be displaceable relative to the frame. The other end of the third support member in the bridging direction is provided with a second assembly portion that is assembled to the other of the pair of horizontal frame portions so as to be displaceable relative to the frame. The first assembly portion has a screw receiving portion that is assembled to one of the pair of horizontal frame portions by tightening a screw. The second assembly portion has a hook portion hooked to the other of the pair of horizontal frame portions.

1 is a schematic perspective view of an indoor unit of an air conditioner according to an embodiment; FIG. FIG. 2 is a schematic cross-sectional view of the indoor unit of the air conditioner according to the embodiment shown in FIG. 1; Fig. 2 is a schematic perspective view of a wind direction adjustment device provided in the indoor unit of the air conditioner according to the embodiment; FIG. 3 is a perspective view schematically showing the configuration of blades (horizontal blades), supporting members, and movable members of the wind direction adjusting device according to the embodiment; FIG. 4 is a perspective view schematically showing the configuration of a support member provided on the frame of the wind direction adjusting device according to the embodiment; FIG. 5 is a side view schematically showing an example of a state before the hook portion of the support member (third support member) of the wind direction adjusting device according to the embodiment is hooked on the frame; FIG. 10 is a side view schematically showing an example of a state in which the hook portion of the support member (third support member) of the wind direction adjusting device according to the embodiment is hooked on the frame; FIG. 4 is a side view schematically showing the configuration of support portions in the first support member and the second support member of the wind direction adjusting device according to the embodiment; FIG. 5 is a side view schematically showing the structure of a support portion in a third support member of the wind direction adjusting device according to the embodiment; FIG. 4 is a side view schematically showing the configuration of a connecting portion of a movable member of the wind direction adjusting device according to the embodiment; FIG. 5 is a side view schematically showing an example of a state in which five horizontal blades connected to a connecting portion are tilted upward at a maximum angle in the wind direction adjusting device according to the embodiment. FIG. 5 is a side view schematically showing an example of a state in which five horizontal blades connected to the connecting portion are tilted downward at the maximum angle in the wind direction adjusting device according to the embodiment.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 12. FIG.
In this embodiment, an example of a wind direction adjusting device provided in an indoor unit of an air conditioner will be described. The wind direction adjusting device according to the present embodiment appropriately adjusts the wind direction of the wind (temperature-controlled air) blown out from the indoor unit of the air conditioner.

FIG. 1 is a schematic perspective view of an indoor unit of an air conditioner. 2 is a schematic cross-sectional view of the indoor unit shown in FIG. 1. FIG.
As shown in FIGS. 1 and 2, the indoor unit 1 of the air conditioner is configured as a floor-standing stand type, and is installed, for example, on the floor surface FL of a building. In the air conditioner, an indoor unit 1 on the indoor side and an outdoor unit (not shown) on the outdoor side are connected via piping for circulating a refrigerant. This constitutes a refrigeration cycle in which the refrigerant circulates between the indoor unit 1 and the outdoor unit.

The indoor unit 1 has a housing 2 . The housing 2 has a depth dimension D, a width dimension W, and a height dimension H. The depth dimension D of the housing 2 is smaller than the width dimension W. The height dimension H of the housing 2 is sufficiently larger than the depth dimension D and the width dimension W. The housing 2 is made of a thin metal plate such as a sheet metal material, and is a substantially box-shaped element that defines the outer shell of the indoor unit 1. etc. is fixed. The housing 2 includes a top plate 21 , a bottom plate 22 , a right side plate 23 , a left side plate 24 , a front plate 25 , a rear plate 26 and a lower cover 27 .

In the housing 2, the top plate 21 defines the top surface, the bottom plate 22 defines the bottom surface, the right side plate 23 defines the right side surface, the left side plate 24 defines the left side surface, the front plate 25 defines the front surface, and the rear plate 26 defines the rear surface. In this embodiment, left and right are defined in a state in which the front face of the housing 2 is faced. The top plate 21 and the bottom plate 22 are spaced in the height direction of the housing 2, the right side plate 23 and the left side plate 24 are spaced in the width direction of the housing 2, and the front plate 25 and the rear plate 26 are spaced in the depth direction of the housing 2. They are facing each other open. In this embodiment, the bottom plate 22 faces the floor FL, and the rear plate 26 faces the wall surface WL.

The front panel 25 is provided with an operation section 3 operated by a user. By operating the operation unit 3, the user can start and stop the indoor unit 1, change the set temperature, and the like. The operation unit 3 has buttons, switches, a display panel, and the like for these operations and their confirmation.

The indoor unit 1 has a suction port 4 and a blowout port 5 on the front side of the housing 2, respectively. The suction port 4 is an opening portion for sucking the air in the room space, and is sandwiched between the lower cover 27 and the front plate 25 in the height direction. A plurality of blades (horizontal blades) 41 are arranged in the suction port 4 . The air outlet 5 is an opening for blowing out temperature-controlled air, and is arranged above the front plate 25 in the height direction. The air outlet 5 is provided with a wind direction adjusting device 6 for adjusting the direction of the air (wind) blown into the indoor space. Details of the wind direction adjusting device 6 will be described later.

As shown in FIG. 2 , the indoor unit 1 includes a heat exchanger 7 , a drain pan 8 , a controller box 9 and a blower 10 . These are housed in the housing 2 and arranged in the order of the controller box 9 , the drain pan 8 , the heat exchanger 7 and the blower 10 from the bottom to the top in the height direction of the housing 2 .

The heat exchanger 7 is disposed substantially in the lower half of the housing 2 in the height direction in an inclined state so that the upper end 7a is closer to the front plate 25 and the lower end 7b is closer to the rear plate 26 . FIG. 2 shows an example of arrangement in which most of the heat exchanger 7 faces the suction port 4 . The heat exchanger 7 includes a plurality of fins 71 and a plurality of heat transfer tubes 72 through which refrigerant flows. The fins 71 are arranged in the width direction of the housing 2 at predetermined intervals. The heat transfer tubes 72 extend in the direction in which the fins 71 are arranged. Refrigerant pipes (not shown) are connected to inlets and outlets of the flow paths formed by the heat transfer pipes 72, respectively. These refrigerant pipes are connected to the outdoor unit through pipe holes in the housing 2 .

The drain pan 8 is arranged below the heat exchanger 7 so as to receive water droplets dripping from the heat exchanger 7 . As an example, the drain pan 8 is arranged between the lower end portion 7b of the heat exchanger 7 and the bottom plate 22 and between the right side plate 23 and the left side plate 24 . Condensed water generated in the heat exchanger 7 is received by the drain pan 8 and discharged to the outside of the housing 2 through a drain pipe (not shown).

A controller box 9 is arranged below the drain pan 8 . The controller box 9 accommodates a control board for starting, stopping, changing the set temperature of the indoor unit 1, a temperature sensor, a coolant leakage sensor, a control board for these sensors, and the like.

The blower device 10 includes a fan motor 11 , a fan 12 and a fan case 13 .
The fan motor 11 is arranged so that the rotating shaft extends in the depth direction of the housing 2 . However, the fan motor may be arranged so that the rotating shaft extends in the width direction of the housing 2 . The fan 12 is configured as a cylindrical multi-blade fan (sirocco fan) and is coaxially attached to the rotating shaft. The fan case 13 has a suction hole 13a and a discharge hole 13b. The suction hole 13a opens forward in the depth direction of the housing 2 (the axial direction of the fan 12). The discharge hole 13b opens upward in the height direction of the housing 2 (the direction perpendicular to the axial direction of the fan 12).

When the fan 12 rotates, air flows along the flow path K passing through the suction port 4 , the heat exchanger 7 , the fan case 13 and the blowout port 5 . In the flow path K, the air in the indoor space sucked into the housing 2 from the suction port 4 exchanges heat with the refrigerant flowing through the heat transfer tubes 72 when passing between the fins 71 of the heat exchanger 7. temperature controlled. The temperature-controlled air passes through the fan case 13 via the intake hole 13a and the discharge hole 13b, and is blown out from the outlet 5 toward the indoor space.

As shown in FIGS. 1 and 2, the indoor unit 1 includes an airflow direction adjusting device 6 at the outlet 5 . The wind direction adjusting device 6 is a device that adjusts the direction of temperature-controlled air (wind) that is blown out from the outlet 5 into the indoor space.

FIG. 3 is a schematic perspective view of the wind direction adjusting device 6. FIG. As shown in FIG. 3 , the wind direction adjusting device 6 includes a frame 61 , a plurality of blades 62 , a support member 63 and a movable member 64 .

The frame 61 is a frame-like element that surrounds the outlet 5 of the indoor unit 1, and is made of sheet metal, for example. The frame 61 is configured such that vertical frame portions 611 and 612 and horizontal frame portions 613 and 614 surround the outlet 5 in a rectangular shape, and is fixed to the housing 2 with bolts (not shown) or the like. The vertical frame portion 611 and the vertical frame portion 612 are erected along the right side plate 23 and the left side plate 24 in the height direction of the housing 2, respectively. The horizontal frame portions 613 and 614 extend in the width direction of the housing 2 with the horizontal frame portion 613 positioned on the upper side and the horizontal frame portion 614 positioned on the lower side.

The wing plate 62 is a flat element for defining the wind direction. The louver 62 includes a first louver 621 that defines a wind direction in a first direction and a second louver 622 that defines a wind direction in a second direction that intersects with the first direction. In this embodiment, the first direction is the height direction (vertical direction) of the housing 2 and the second direction is the width direction (horizontal direction) of the housing 2 . Therefore, the first louver 621 defines the wind direction in the vertical direction, and the second louver 622 defines the wind direction in the horizontal direction.

The first blade plate (hereinafter referred to as horizontal blade) 621 is made of synthetic resin such as ABS resin. In this embodiment, five horizontal wings 621 extend in the width direction of the housing 2 and are arranged parallel to each other at predetermined intervals. The extension dimension of each horizontal blade 621 is substantially equal to the distance between the right side plate 23 and the left side plate 24 of the housing 2 . These horizontal wings 621 are connected by a movable member 64 so as to be interlockable. The interlocking form of the horizontal wings 621 will be described later. The number of horizontal blades 621 is not particularly limited, and may be four or less, or six or more. The term "four or less" includes the case where the number of horizontal wings 621 is only one.

FIG. 4 is a perspective view schematically showing the configuration of the horizontal wings 621. As shown in FIG. As shown in FIG. 4 , the horizontal blade 621 has a shaft portion 65 supported by the support member 63 . The shaft portions 65 are arranged at predetermined intervals in the extending direction of the horizontal wings 621 . In this embodiment, as an example, the shaft portions 65 (65a, 65b, 65c) are arranged at three locations near the right end portion 62a, left end portion 62b, and intermediate portion 62c of the horizontal wing 621 in the extension direction. The axial center of the shaft portion 65 coincides with the extending direction of the horizontal wings 621 . Cutouts 66 are formed at these three locations. The cutouts 66a, 66b, and 66c are gaps obtained by notching the right end portion vicinity 62a, the left end portion vicinity 62b, and the intermediate portion vicinity 62c of the horizontal blade 621 from the rear edge portion 621b to the front edge portion 621a. Shafts 65a, 65b, 65c are provided at the ends of the notches 66a, 66b, 66c, respectively.

A notch portion 66d that is continuous with the notch portion 66c is formed near the middle portion 62c of the horizontal blade 621 . The notch portion 66d is a gap obtained by further notching a portion of the left edge portion 66e of the notch portion 66c along the rear edge portion 621b. A shaft portion 67 is provided at the edge of the notch portion 66d. The shaft portion 67 is a cylindrical projection (boss) for connecting the horizontal wings 621 to the movable member 64 (details will be described later). The axial center of the shaft portion 67 coincides with the extending direction of the horizontal wings 621 .

As shown in FIG. 3, the second wing plate (hereinafter referred to as vertical wing) 622 is made of the same sheet metal as the frame 61, for example. In this embodiment, four vertical wings 622 extend in the height direction of the housing 2 and are arranged in parallel with each other at predetermined intervals. The extension dimension of each vertical wing 622 is approximately equal to the standing height of the vertical frame portions 611 and 612 of the frame 61 . These vertical wings 622 are pivotally supported by horizontal frame portions 613 and 614 with upper and lower shaft portions 622a and 622b, respectively, and are linked by a link mechanism LM so as to be interlockable. The link mechanism LM is operated by the actuator 14 (see FIG. 2) to synchronously change the tilt angle of the vertical wings 622 . The inclination angle of the vertical blades 622 is defined as the degree of horizontal inclination of the vertical blades 622 with respect to the depth direction of the housing 2, that is, the blowing direction of temperature-controlled air.

FIG. 5 is a perspective view schematically showing the structure of the support member 63. As shown in FIG. As shown in FIGS. 3 and 5 , the support member 63 is an element provided on the frame 61 to rotatably support the wing plate 62 , specifically the horizontal wing 621 . Further, the support member 63 is a non-moving member for the movable member 64, and is an element fixed to the frame 61 and maintained in a stationary state. In this embodiment, the support member 63 is made of synthetic resin such as ABS resin and includes three support members 631 , 632 and 633 . The horizontal blade 621 is supported at three points by these three support members 631 , 632 and 633 .

The first support member 631 and the second support member 632 are configured as a pair. The first support member 631 is provided on the vertical frame portion 611 and supports the horizontal blade 621 near the right end portion 62a. The second support member 632 is provided on the vertical frame portion 612 and supports the left end portion vicinity 62b of the horizontal wing 621 .

The third support member 633 is a post provided on the frame 61 and spans between the horizontal frame portions 613 and 614 . In this embodiment, a third support member 633 is bridged in parallel with the vertical frame portions 611 and 612 between substantially intermediate portions of the horizontal frame portions 613 and 614 . That is, the third support member 633 is arranged substantially in the middle between the first support member 631 and the second support member 632 which are arranged with a predetermined interval. Therefore, the third support member 633 supports the intermediate portion vicinity 62c of the horizontal blade 621 .

The third support member 633 is attached to the frame 61 at its upper end and lower end. The upper end is one end in the bridging direction to the horizontal frame portions 613 and 614 , and the lower end is the other end in the bridging direction to the horizontal frame portions 613 and 614 . A screw receiving portion 634 is provided at the upper end portion of the third support member 633 . The screw receiving portion 634 is a first assembly portion of the third support member 633 to the frame 61 . By tightening the fixing screw 635 to the screw receiving portion 634 , the upper end portion of the third support member 633 is attached to the horizontal frame portion 613 of the frame 61 . Therefore, the upper end portion of the third support member 633 and the frame 61 are assembled so as not to be relatively displaceable.

On the other hand, as shown in FIGS. 5 to 7 , a hook portion 636 that is hooked to the horizontal frame portion 614 of the frame 61 is provided at the lower end portion of the third support member 633 . A hook portion 636 is a second assembly portion of the third support member 633 to the frame 61 . The horizontal frame portion 614 has a hanging piece 614a on which the hook portion 636 is hooked. FIG. 6 is a side view schematically showing an example of the state before the hook portion 636 is hooked on the horizontal frame portion 614. As shown in FIG. FIG. 7 is a side view schematically showing an example of a state in which the hook portion 636 is hooked on the horizontal frame portion 614. As shown in FIG.

As shown in FIGS. 3 and 5, the hanging piece 614a is formed with a concave portion 614b that defines a hooking position of the hook portion 636. As shown in FIG. The recessed portion 614b is a notch at approximately the middle portion of the hanging piece 614a in the longitudinal direction (extending direction of the horizontal frame portion 614). The lower end of the third support member 633 is attached to the horizontal frame portion 613 of the frame 61 by hooking the hook portion 636 on the concave portion 614b. Therefore, even when the lower end portion of the third support member 633 and the frame 61 are assembled together, the lateral frame portion 614 can be bent upward. In other words, the lower end of the third support member 633 and the frame 61 are assembled so as to be relatively displaceable.

The support member 63 has a support portion 68 that rotatably supports the shaft portion 65 of the horizontal blade 621 . FIG. 5 is a perspective view schematically showing the configuration of the support portion 68. As shown in FIG. As shown in FIGS. 4 and 5, the support portion 68 has a projection 68a projecting forward and a claw 68b provided at the projecting end of the projection 68a. The claw 68 b is a bearing portion of the shaft portion 65 in the support portion 68 . That is, the claw 68b corresponds to the bearing portion of the support member 63. As shown in FIG.

FIG. 8 is a side view schematically showing the configuration of the support portion 68 in the first support member 631 and the second support member 632. As shown in FIG. As shown in FIGS. 4, 5, and 8, the first support member 631 and the second support member 632 are provided with projections 681a, 681a, 681a, 681a, 681a, 681a, 681a, 681a, 681a, 681a, 681a, 681a, 681a. 682a is formed. The claws 681b and 682b form a pair and extend curvedly with a predetermined curvature from the projecting ends of the protrusions 681a and 682a. A space between the pair of claws 681b and a space between the pair of claws 682b are opened forward.

The opening interval (distance D1 shown in FIG. 8) is smaller (narrower) than the shaft diameter (distance D2 shown in FIG. 8) of the shaft portions 65a and 65b. The shaft portion 65a enters between the pair of claws 681b and is supported therebetween while expanding the opening distance (D1) by elastically deforming the pair of claws 681b. Similarly, the shaft portion 65b enters between the pair of claws 682b and is supported therebetween while expanding the opening distance (D1) by elastically deforming the pair of claws 682b. After the shaft portions 65a and 65b enter, the pair of claws 681b and 682b are elastically restored, thereby suppressing the shaft portions 65a and 65b from falling out from between the pair of claws 681b and between the pair of claws 682b. .

FIG. 9 is a side view schematically showing the configuration of the support portion 68 in the third support member 633. As shown in FIG. As shown in FIGS. 4, 5, and 9, the third support member 633 is formed with a projection 683a that can be fitted into the notch 66c of the horizontal wing 621. As shown in FIG. The projection 683a has a cross-linked form including three legs P1, P2, P3 and a girder G spanning the legs P1, P2, P3. The legs P1, P2, P3 are connected to the third support member 633 at the upper, lower and intermediate portions of the third support member 633. As shown in FIG. The claw 683b extends curvedly with a predetermined curvature from the projecting end of the protrusion 683a. A protrusion 683c is provided on the protruding end of the protrusion 683a to narrow the distance between the protruding end and the tip of the claw 683b.

A space between the claw 683b and the hump 683c is open upward. The opening interval (distance D4 shown in FIG. 9) is smaller (narrower) than the shaft diameter (distance D5 shown in FIG. 9) of the shaft portion 65c. The shaft portion 65c enters between the claw 683b and the hump 683c and is supported therebetween while elastically deforming the claw 683b to widen the opening distance (D4). After the shaft portion 65c enters, the claw 683b is elastically restored, thereby preventing the shaft portion 65c from falling out from between the claw 683b and the hump 683c.

As shown in FIG. 5, in this embodiment, the three support members 631, 632, 633 each have five support portions 68. As shown in FIG. Thereby, each of the three support members 631, 632, 633 can support the five horizontal blades 621. As shown in FIG.

As described above, the support portion 68 has the claw 68b as a bearing portion of the shaft portion 65. As shown in FIG. The span diameter of the pawl 68 b is larger than the shaft diameter of the shaft portion 65 . Examples of these forms are shown in FIGS. 8 and 9, respectively. As shown in FIG. 8, the span diameter (D3) of the pair of claws 681b is larger than the shaft diameter (D2) of the shaft portion 65a, and the span diameter (D3) of the pair of claws 682b is larger than the shaft diameter (D3). It has a larger diameter than the shaft diameter (D2) of the portion 65b. As shown in FIG. 9, the span diameter (D6) of the claw 683b is larger than the shaft diameter (D5) of the shaft portion 65c.

Since the span diameter of the pawl 68b is larger than the shaft diameter of the shaft portion 65, the pawl 68b, that is, the bearing portion of the support portion 68, is stressed against the force of the shaft portion 65 pushing the pawl 68b. hard. On the other hand, the claw 68b rotatably supports the shaft portion 65. As shown in FIG. Therefore, in order to prevent stress from being generated in the pawl 68b and to rotatably support the shaft portion 65, the difference between the span diameter of the pawl 68b and the shaft diameter of the shaft portion 65 is, for example, 0.1 mm to 0.5 mm. adjusted to some extent. As a result, a gap of about 0.2 mm is created between the claw 68b and the shaft portion 65. As shown in FIG.

As shown in FIG. 3, the movable member 64 is an element that connects a plurality of blades 62, specifically five horizontal blades 621, in an interlockable manner. Also, the movable member 64 is an element displaced with respect to the support member 63 . The movable member 64 is made of a material having high elasticity, flexibility and oil resistance. In this embodiment, as an example, the movable member 64 is made of synthetic resin such as polypropylene.

As shown in FIG. 4, the movable member 64 includes a body portion 64a and a connecting portion 64b.
The body portion 64 a is a plate-like movable piece that is displaced with respect to the third support member 633 . The body portion 64a is shorter than the third support member 633 in the height direction (vertical direction) of the housing 2, and is continuous over the maximum interval of the horizontal blades 621 or more. The maximum interval between the horizontal blades 621 is the interval between the top and bottom of the five horizontal blades 621 arranged in parallel at a predetermined interval (the interval between the horizontal blade U and the horizontal blade L shown in FIG. 3). . Thereby, the body part 64a is configured to be able to connect the five horizontal wings 621 . In this embodiment, as an example, the body portion 64a is arranged on the left side of the third support member 633 . Therefore, the main body portion 64a is displaced near the intermediate portion 62c of the horizontal blade 621. As shown in FIG. Note that the body portion 64 a may be arranged on the right side of the third support member 633 .

FIG. 10 is a side view schematically showing the configuration of the connecting portion 64b. As shown in FIGS. 3, 4, and 10, the connecting portion 64b is provided on the main body portion 64a, and is a portion for connecting the horizontal wings 621 to be integrated with the connecting portion 64b. In this embodiment, the connecting portion 64b has three through holes 64c, 64d, 64e and slits 64f, 64g connecting them. These penetrate through the main body portion 64a in the plate thickness direction. The through-hole 64c is a hole for inserting the shaft portion 67 of the horizontal blade 621, and corresponds to a bearing portion of the shaft portion 67 in the main body portion 64a (simply speaking, the movable member 64).

The horizontal blade 621 is connected to the connecting portion 64b by inserting the shaft portion 67 into the through hole 64c. A span diameter (hole diameter) of the through hole 64 c is larger than the shaft diameter of the shaft portion 67 . Therefore, the through-hole 64c is less likely to be stressed by the force of the shaft portion 67 pushing against the peripheral surface of the through-hole 64c. On the other hand, the through-hole 64c rotatably supports the shaft portion 67 and also supports it in a non-rotating state (states shown in FIGS. 11 and 12 described later). Therefore, the difference between the span diameter (hole diameter) of the through hole 64c and the shaft diameter of the shaft portion 67 is adjusted to be smaller than the difference between the span diameter of the pawl 68b and the shaft diameter of the shaft portion 65. there is In short, the span diameter (hole diameter) of the through-hole 64c and the shaft diameter of the shaft portion 67 should be set so that the shaft portion 67 hardly generates stress against the force that pushes the peripheral surface of the through-hole 64c. For example, these are set to be substantially equal, or the span diameter of the through hole 64 c is set to be slightly larger than the shaft diameter of the shaft portion 67 .

The through-holes 64d and 64e are long holes arranged on both sides of the through-hole 64c in the continuous direction (vertical direction) of the body portion 64a. The through holes 64d and 64e are connected to the through hole 64c by slits 64f and 64g. The through holes 64d and 64e and the slits 64f and 64g are provided as deformation regions for enlarging the hole diameter of the through hole 64c when the shaft portion 67 is inserted and smoothing the insertion of the shaft portion 67 into the through hole 64c. there is Further, these 64d, 64e, 64f, and 64g widen the hole diameter of the through hole 64c to smooth the rotation when the shaft portion 67 inserted into the through hole 64c rotates. It also functions as a deformation region for supporting the shaft portion 67 with the through-hole 64c by returning the hole diameter of the through-hole 64c.

11 and 12 are side views schematically showing a state in which the horizontal wings 621 are connected to the connecting portion 64b. As shown in FIGS. 11 and 12, in this embodiment, the body portion 64a has five connecting portions 64b. By connecting the horizontal wings 621 one by one to the five connecting portions 64b, the five horizontal wings 621 are interlockably connected via the main body portion 64a.

As shown in FIGS. 4 and 10 to 12, the support member 63 and the movable member 64 have a positioning mechanism 69. As shown in FIG. The positioning mechanism 69 is a mechanism for positioning the movable member 64 with respect to the support member 63 while the shaft portion 65 of the horizontal blade 621 is supported by the claws 68 b of the support portion 68 .

The positioning mechanism 69 has a positioning portion 69a and a positioned portion 69b positioned by the positioning portion 69a. One of the positioning portion 69a and the positioned portion 69b is provided on the support member 63, and the other is provided on the movable member 64. As shown in FIG. In this embodiment, as an example, the positioning portion 69a is provided on the third support member 633, and the positioned portion 69b is provided on the main body portion 64a of the movable member 64, respectively.

As shown in FIGS. 5 and 9 to 12, the positioning portion 69a includes a flexible piece 691 and a positioning piece 692. As shown in FIG.
The flexible piece 691 is configured by bulging the rear surface portion 633a of the third support member 633 rearward, and functions as a spring piece. That is, the flexible piece 691 is configured to be slightly elastically deformable in the front-rear direction. As a result, the flexible piece 691 causes the positioning piece 692 to press the positioning guide 693 of the portion to be positioned 69b, which will be described later. In this embodiment, as an example, the flexible piece 691 has a trapezoidal outline shape when viewed from the left, but the shape is not limited to this.

The positioning piece 692 is a projecting piece projecting forward and leftward from the flexible piece 691 in parallel with the horizontal plane. The positioning piece 692 is a projection of the positioning portion 69a, and presses the positioned portion 69b (specifically, a positioning guide 693 described later) with a pressing force generated by the flexible piece 691. As shown in FIG. The horizontal plane is, for example, a plane parallel to the floor FL, and is a reference plane for positioning in the positioning mechanism 69 . The reason why the positioning piece 692 protrudes leftward is that the body portion 64a is arranged on the left side of the third support member 633 in this embodiment. In short, it is sufficient that the positioning piece 692 protrudes toward the side of the third support member 633 on which the main body portion 64a is arranged.

As shown in FIGS. 10 to 12 , the positioned portion 69 b includes positioning guides 693 , restricting pieces 694 and through holes 695 .
The positioning guide 693 is an arc-shaped outer shell portion formed in the rear portion 641a of the main body portion 64a, and has a wavy-line shape in which peaks M and valleys V are alternately continuous in plan view from the left. The position of the movable member 64 with respect to the third support member 633 is defined by fitting the tip 692a of the positioning piece 692 into the valley V. As shown in FIG. That is, the positioning guide 693 is a guide that defines the position of the movable member 64 with respect to the positioning piece 692 along a wavy line in which peaks M and valleys V continue alternately. At that time, the tip 692 a of the positioning piece 692 overcomes the force that presses the positioning guide 693 and climbs over the valley V and the adjacent peak M. At this time, a predetermined click feeling (click feeling) is generated as a change in the pressing force applied to the positioning guide 693 .

The valleys V adjacent to each other are arranged according to the increment (angle of change) of the inclination angle of the horizontal blade 621 . In other words, the peaks M and the valleys V are arranged according to the rotation angle of the horizontal blade 621 around the shaft portion 65 . The angle of inclination of the horizontal blades 621 is defined as the direction in which the temperature-controlled air is blown out, in other words, the degree of vertical inclination of the horizontal blades 621 with respect to the horizontal plane. As shown in FIG. 10, in this embodiment, the horizontal wings 621 can be tilted upward at four stages of tilt angles and downward at three stages of tilt angles from the horizontal plane, which is the reference plane. Therefore, four valleys V are arranged above and three valleys V are arranged below with the valley V corresponding to the horizontal plane (valley V0 shown in FIG. 10) as a boundary.

In this embodiment, as an example, the change angle of the horizontal blades 621, in other words, the arrangement interval of the valleys V in the positioning guide 693 in the circumferential direction is constant. However, the change angle of the horizontal wings 621 may be different instead of constant, or may be different between upward and downward. Also, the number of stages of the inclination angle of the horizontal blade 621 may be the same between upward and downward.

The regulating piece 694 regulates the positioning piece 692 so as not to go over the uppermost valley V (the valley VU shown in FIG. 10) and the lowest valley V (the valley VL shown in FIG. 10) of the positioning guide 693 . The restricting piece 694 has an upper restricting piece 694u continuing to the valley VU and a lower restricting piece 694l continuing to the valley VL. The upper restricting piece 694u comes into contact with the positioning piece 692 fitted in the valley VU and restricts the relative position with the positioning piece 692 (state shown in FIG. 11). The lower regulating piece 694l comes into contact with the positioning piece 692 fitted in the valley VL and regulates the relative position with the positioning piece 692 (state shown in FIG. 12).

The through hole 695 penetrates the main body portion 64a in the plate thickness direction. The through hole 695 is an elongated hole curved in an arc shape along the positioning guide 693 in plan view from the left. The through hole 695 is provided as a deformation area for bending the positioning guide 693 when the tip 692a of the positioning piece 692 overcomes the force pressing the positioning guide 693 and climbs over the mountain M. That is, the positioning guide 693 pressed by the tip 692a bends toward the through hole 695, so that the tip 692a of the positioning piece 692 easily climbs over the mountain M.

When changing the inclination angle of the horizontal blades 621, one of the five horizontal blades 621 is grasped and rotated by pushing upward or downward. Since the five horizontal blades 621 are connected to each other by the movable member 64, the remaining horizontal blades 621 are also rotated in conjunction with the horizontal blades 621 that are rotated. As a result, the five horizontal blades 621 can be tilted at a desired tilt angle step by step. FIG. 11 shows an example of a state in which the five horizontal blades 621 are tilted upward at the maximum angle. On the other hand, FIG. 12 shows an example of a state in which the five horizontal blades 621 are inclined downward at the maximum angle.

As described above, according to the present embodiment, the crossing diameter of the claw 68b is made larger than the shaft diameter of the shaft portion 65 of the horizontal blade 621 . Since the claw 68b is a bearing portion of the shaft portion 65, it is possible to suppress the occurrence of internal stress in the bearing portion when the shaft portion 65 is rotatably supported. As a result, it is possible to protect the bearing portion, suppress deterioration over time, and improve durability.

Also, the support member 63 and the movable member 64 have a positioning mechanism 69 . The positioning mechanism 69 can position the movable member 64 at a desired position with respect to the support member 63 . According to the movable member 64, a plurality of (five in this embodiment) horizontal feathers 621 can be linked together. Therefore, it is possible to position the horizontal blade 621 at a desired inclination angle while suppressing the occurrence of internal stress in the bearing portion. At that time, all the horizontal blades 621 can be synchronously tilted without rotating the plurality of horizontal blades 621 individually, so that the work can be made more efficient.

In addition, the positioning mechanism 69 is a mechanism in which the positioning piece 692 fits into the valley V of the positioning guide 693 corresponding to the inclination angle of the horizontal blade 621 . Therefore, when the positioning piece 692 climbs over the adjacent peak M before fitting into the valley V, it is possible to generate a predetermined click feeling (click feeling). Therefore, it is possible for the user to recognize that the horizontal wings 621 are positioned at the desired inclination angle by the click feeling. Thereby, the certainty of work can be improved.

Since the movable member 64 is made of synthetic resin such as polypropylene, it can be improved in elasticity, flexibility and oil resistance. Therefore, even if a load is applied to the movable member 64 when it is positioned with respect to the support member 63, durability against the applied load can be provided. For example, even if the indoor unit 1 continues to operate in a soot atmosphere, the occurrence of solvent cracks in the movable member 64 can be suppressed.

Further, the horizontal wings 621 are made of synthetic resin such as ABS resin. Therefore, it is easier to work than wing plates made of sheet metal, and it is possible to reduce the weight. On the other hand, the horizontal blade 621 may bend or vibrate depending on its own weight, the pressure of the blown wind (wind pressure), or the like. In this embodiment, the third support member 633 is provided as a central support of the frame 61, and the support portion 68 of the third support member 633 supports the intermediate portion 62c of the horizontal blade 621. As shown in FIG. Therefore, bending and vibration of the horizontal wings 621 can be suppressed while improving the workability of the horizontal wings 621 and reducing the weight.

The third support member 633 is attached to the frame 61 such that its upper end is immovable relative to the frame 61 and its lower end is displaceable relative to the frame 61 . Therefore, even if an impact is applied from the outside through the third support member 633, the impact can be relieved and mitigated by relative displacement with respect to the frame 61. FIG. Alternatively, even if the third support member 633 vibrates due to the wind pressure applied to the horizontal wings 621, the vibration can be absorbed and mitigated by similar displacement. As a result, the third supporting member 633, the frame 61, the horizontal wings 621, etc. can be protected from such impacts and vibrations. For example, even if the third support member 633, the movable member 64, and the horizontal wings 621 are made of resin, they can be protected from impact and the like, and durability can be enhanced.

Furthermore, in this embodiment, the positioning mechanism 69 (the positioning portion 69a and the portion to be positioned 69b) is arranged above the middle position of the third support member 633 and the main body portion 64a. As a result, when the horizontal blade 621 is supported by the support member 63, it becomes easier to check the top and bottom, and it is possible to prevent work errors such as reversing the top and bottom and assembling.

Although embodiments of the present invention have been described above, such embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

As described above, in the present embodiment, the indoor unit 1 of the air conditioner is of the floor type, but is not limited to this. For example, the indoor unit may be of a ceiling-installed type or a wall-mounted type. Further, the application target of the wind direction adjusting device is not limited to the air conditioner. For example, the wind direction adjusting device can be applied to various devices and facilities that require adjustment of the wind direction, such as blowers, fans, and air purifiers that blow air without adjusting the temperature. Moreover, the wind direction adjusting device can also be applied to adjust the direction of the exhaust air in the outdoor unit of the air conditioner.

DESCRIPTION OF SYMBOLS 1... Indoor unit, 2... Housing, 5... Air outlet, 6... Wind direction adjusting device, 7... Heat exchanger, 8... Drain pan, 9... Controller box, 10... Air blower, 61... Frame, 611, 612... Vertical frame portion 613, 614 Horizontal frame portion 614a Drooping piece 614b Recess 62 Wings 621, U, L First wing (horizontal wing) 622 Second wing ( vertical wings), 63 (631, 632, 633) support member 634 screw receiving portion 635 fixing screw 636 hook portion 64 movable member 64a main body portion 64b connecting portion 64c penetration Hole 65 (65a, 65b, 65c), 67 Shaft 68 Support 68a (681a, 682a, 683a) Projection 68b (681b, 682b, 683b) Claw 69 Positioning mechanism 69a Positioning portion 69b Positioned portion 691 Flexible piece 692 Positioning piece 693 Positioning guide 694 (694l, 694u) Regulating piece 695 Through hole FL Floor surface WL Wall surface D2 , D5... Shaft diameter, D3, D6... Span diameter, M... Peak, V, V0, VU, VL... Valley.

Claims (5)

A wind direction adjusting device that adjusts the direction of the wind blown out from the blower,
a rectangular frame having a pair of vertical frame portions facing each other and a pair of horizontal frame portions facing each other ;
a plurality of flattened blades extending in a predetermined direction and arranged in parallel at predetermined intervals;
a support member provided on the frame for supporting the wing plate;
a movable member that rotatably connects the plurality of blades and displaces with respect to the support member;
The blades have shafts arranged at predetermined intervals in the direction of elongation,
The support member rotatably supports the shaft portion, and has a bearing portion having a diameter across the shaft portion that is larger than the shaft diameter of the shaft portion,
The support member and the movable member have a positioning mechanism that positions the movable member with respect to the support member while the shaft portion is supported by the bearing portion,
The support member includes a first support member and a second support member which are arranged at a predetermined interval in the direction in which the pair of lateral frame portions of the frame extend, and which is arranged approximately in the middle of the interval between these support members. and a third support member;
The third support member is bridged between the pair of horizontal frame portions of the frame,
One end of the third support member in the bridging direction is provided with a first assembly portion that is assembled to one of the pair of horizontal frame portions so as not to be displaced relative to the frame,
A second assembly portion is provided at the other end of the third support member in the bridging direction and is assembled to the other of the pair of horizontal frame portions so as to be displaceable relative to the frame,
The first assembly portion has a screw receiving portion that is assembled to one of the pair of lateral frame portions by tightening a screw,
The second assembly portion has a hook portion hooked to the other of the pair of horizontal frame portions.
Wind direction adjustment device. The positioning mechanism has a positioning portion provided on one of the supporting member and the movable member, and a positioned portion provided on the other and positioned by the positioning portion,
The positioning portion includes a protrusion that presses the portion to be positioned,
The wind direction adjusting device according to claim 1, wherein the positioned portion includes a guide that defines the position of the movable member with respect to the projection along a wavy line in which peaks and valleys alternately continue. The wind direction adjusting device according to claim 2, wherein the ridges and troughs of the guide are arranged according to the rotation angle of the louver around the shaft. The positioning portion is provided on the third support member,
The wind direction adjusting device according to claim 2 or 3, wherein the positioned portion is provided on the movable member that displaces with respect to the third support member. a housing;
a heat exchanger housed in the housing;
a blower for blowing out air temperature-controlled by the heat exchanger;
An indoor unit of an air conditioner, comprising: the wind direction adjusting device according to any one of claims 1 to 4 as a wind direction adjusting device for adjusting the wind direction of air blown out from the air blower.

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