JP2023066188A - Wind direction adjusting device - Google Patents

Abstract

To provide a wind direction adjusting device which achieves good operability while inhibiting failures caused by contact between a bearing part and a fin.SOLUTION: A wind direction adjusting device includes: a case body 3 having a bearing part 12; a fin 10; and a shaft part 13 rotatably connecting the bearing part 12 with the fin 10. The shaft part 13 is formed separately from the bearing part 12 and the fin 10 and has rigidity lower than those of the bearing part 12 and the fin 10.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a wind direction adjusting device provided with fins rotatably supported by bearings of a case body.

2. Description of the Related Art Conventionally, in an air conditioner used in a vehicle such as an automobile, there is a wind direction adjusting device that adjusts the direction of blowing wind. The wind direction adjusting device includes a case body defining an air passage therein, and a plurality of fins arranged inside the case body. The fins are arranged to be rotatable with respect to the case body, and the rotation of the fins adjusts the direction of the air blowing out from the air passage (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2021-28212 (pages 4-8, Figure 1-2)

When the case body and the fins are made of a material that has both appearance and strength in order to unify the appearance texture, if the case body and the fins made of the same material come into sliding contact with each other due to the rotation of the fins, the case body and the fins are likely to be scraped off. Since noise is likely to be generated, it is conceivable to rotatably receive the case body by a separate bearing portion (spacer) formed of a different material. However, in this case, there are concerns about an increase in design man-hours and a complicated structure, and depending on the layout, it may be difficult to set the bearing at a location that is difficult for the passenger to see.

Therefore, it is desired to obtain comfortable operability and improve the appearance while suppressing scraping due to contact between parts or generation of low-level sounds.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a wind direction adjusting device that is easy to operate while suppressing the occurrence of problems caused by the contact between the bearing portion and the fins.

The wind direction adjusting device according to claim 1 comprises a case body having a bearing portion, a fin, and a shaft portion that rotatably connects the bearing portion and the fin, wherein the shaft portion is the bearing portion. and is separate from the fins and has lower rigidity than the bearing portion and the fins.

The airflow direction adjusting device according to claim 2 is the airflow direction adjusting device according to claim 1, wherein the shaft portion includes a fin-side connecting portion having a non-circular cross-section connected to the fins and a circular cross-section connecting to the bearing portion. and a bearing portion side connecting portion.

According to a third aspect of the present invention, there is provided a wind direction adjusting device according to the first or second aspect, wherein the shaft portion has a flange portion sandwiched between the bearing portion and the fins.

According to a fourth aspect of the present invention, there is provided a wind direction adjusting device according to any one of the first to third aspects, wherein the bearing portion and the fins are made of the same material.

According to the airflow direction adjusting device of claim 1, when the bearing portion and the fins having relatively high rigidity come into contact with or slide against each other when the fins are rotated, In addition to suppressing defects, the shafts can be molded individually, so the shaft dimensions can be made the same and stabilized, so that when the fins are rotated, the operation resistance can be stabilized at a high level. , good operability can be obtained.

According to the airflow direction adjusting device of claim 2, in addition to the effect of the airflow direction adjusting device of claim 1, the fin side connecting portion is integrally connected to the fins, and the bearing portion side connecting portion is connected to the bearing portion. By making the fins rotatable, it is possible to easily realize a configuration in which the fins are rotatably connected to the bearings by the shafts, and when the fins connected to the fin-side connecting parts of the shafts are assembled to the bearings of the case body, In addition, there is no need to match the angle between the bearing portion side connecting portion and the bearing portion side for insertion, which improves workability.

According to the airflow direction adjusting device of claim 3, in addition to the effect of the airflow direction adjusting device of claim 1 or 2, the gap is formed between the fins and the bearing portion by the flange portion, so that the fins and the bearing portion are separated. can be reliably prevented from coming into direct contact with each other.

According to the airflow direction adjusting device of claim 4, in addition to the effect of the airflow direction adjusting device of any one of claims 1 to 3, it is possible to unify the appearance texture and improve the appearance.

FIG. 3(a) is a cross-sectional view showing a part of the wind direction adjusting device according to the embodiment of the present invention, taken along line II in FIG. 2, and FIG. 3(b) is a perspective view of the shaft. It is a perspective view which shows the fin and bearing part of an airflow direction adjustment apparatus same as the above. It is a perspective view which shows a wind direction adjustment apparatus same as the above.

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 3, 1 is a wind direction adjusting device. The wind direction adjusting device 1 is also called an air outlet, a ventilator, a register, or the like, and adjusts the blowing direction of air from an air conditioner or the like. Hereinafter, in order to make the description clearer, the wind direction adjustment device 1 is defined such that the leeward side from which the wind blows is the front side, the front side, or the front side, and the opposite side, that is, the windward side that receives the wind, is the rear side. The side, back side, or back side defines the lateral direction or width direction as seen from the front side, and the vertical direction. In this embodiment, the wind direction adjusting device 1 is applied to an air conditioner for vehicles such as automobiles. The wind direction adjusting device 1 may be placed at any position, but in the drawings, the arrow FR side is the front side, the arrow RR side is the rear side, the arrow L side is the left side, the arrow R side is the right side, and the arrow U side is the right side. It shall be arranged so that the upper side and the arrow D side may be the lower side. These directions are shown only as an example, and may be changed as appropriate depending on the installation position and installation direction of the wind direction adjusting device 1 .

The wind direction adjusting device 1 has a case body 3 . Case body 3 is formed in a tubular shape having side walls 4 . In this embodiment, the side wall 4 is formed in a cylindrical shape in the front-rear direction. In the illustrated example, the side wall 4 is shaped like a rectangular tube. A side wall 4 encloses an air passage 5 inside. The direction parallel to the central axis of the side wall 4 is the ventilation direction of the ventilation path 5 . In the present embodiment, the ventilation direction of the ventilation path 5 is the front-rear direction, and ventilation is performed from the rear to the front. That is, in the ventilation path 5, the rear side is the upstream side in the ventilation direction, and the front side is the downstream side in the ventilation direction.

The side wall 4 has a predetermined length in the ventilation direction of the ventilation path 5 . In the present embodiment, the side wall 4 is flat in the vertical direction and elongated in the horizontal direction, that is, formed horizontally. Therefore, the wind direction adjusting device 1 is formed to be horizontal and thin. The side wall 4 includes a central portion of the air passage 5, that is, a pair of side wall portions 4a facing each other across the central axis of the side wall 4 or the case body 3, and a pair of end wall portions 4b connecting the pair of side wall portions 4a. and integrally. The pair of side wall portions 4a face each other in the horizontal direction, and the pair of end wall portions 4b face each other in the vertical direction. A receiving port 6 for receiving air in the ventilation passage 5 is surrounded by rear ends, which are one ends of the pair of side walls 4a, 4a and the pair of end walls 4b, 4b. A blowout port 7 for blowing out air from the ventilation passage 5 is surrounded by a front end portion which is the other end portion of the end walls 4b, 4b. That is, one end of the case body 3, the rear end, serves as an inlet 6 for receiving air into the air passage 5, and the other end, the front end of the case body 3, serves as an air outlet for blowing air from the air passage 5. 7. A ventilation passage 5 is formed between the receiving port 6 and the blowing port 7 to connect them.

The case body 3 may be integrally formed, or may be formed by combining a plurality of members. For example, the front end portion (air outlet 7) of the case body 3 may be formed by a finisher.

A fin 10 is arranged on the case body 3 . The fins 10 are also called louvers. The fins 10 are arranged so as to face the outlet 7 . That is, the fins 10 are located downstream of the air passages 5 . The fins 10 may be wholly located in the air passage 5 inside the case body 3 , or part of the fins 10 may protrude outside the case body 3 from the air outlet 7 .

Fin 10 is formed in a plate shape. At least one of the main surfaces of the fins 10 serves as a guide surface that guides the wind. Further, in the present embodiment, the front end portion 10a, which is the end portion of the fin 10 on the design side, is formed in a cylindrical shape whose axial direction is along the longitudinal direction of the fin 10. As shown in FIG. The fins 10 may be singular or plural. In the present embodiment, a thin and slim wind direction adjusting device 1 having one fin 10 is configured. In addition to the fins 10 , a louver may be separately arranged on the upstream side of the fins 10 as a wind distribution body for adjusting the wind direction in the direction intersecting with the longitudinal direction of the fins 10 . In this case, for example, an operating portion (operating knob) for operating the louver may be arranged on the fin 10, and the louver may be rotated by a mechanism connected to this operating portion.

As shown in FIGS. 1A and 1B, the fins 10 are rotatable at both ends in the longitudinal direction by shafts 13 with respect to bearings 12 arranged in the case body 3. supported by

In the present embodiment, as shown in FIG. 3, the bearings 12 are arranged on both sides of the case body 3, that is, inside the side walls 4a. That is, the bearing portion 12 is positioned inside the air passage 5 . Preferably, the bearing portion 12 is located on the upstream side, that is, on the rear side of the blower port 7 in the case body 3 . In the present embodiment, as shown in FIGS. 2 and 3 , the bearing portion 12 extends in a direction intersecting the longitudinal direction of the fin 10 and a facing portion 14 that faces the end portion in the longitudinal direction of the fin 10 . and the support portion 15 are integrally provided.

The opposing portion 14 is a design portion that continues in the longitudinal direction of the fin 10 and forms an integral design with the fin 10 . In the present embodiment, the facing portion 14 is formed extending in the front-rear direction. The facing portion 14 is formed in a plate shape with a thickness equal to or substantially equal to that of the fins 10 . A front end portion 14 a , which is the design-side end portion of the facing portion 14 , is positioned so as to face the outlet 7 . A front end portion 14 a of the facing portion 14 may be positioned downstream with respect to the outlet 7 . A front end portion 14a of the facing portion 14 is formed in a cylindrical shape whose axial direction extends in the left-right direction. A front end portion 14 a of the facing portion 14 is formed in the same or substantially the same shape as the front end portion 10 a of the fin 10 . A front end portion 14 a of the facing portion 14 is positioned on the same or substantially the same line as the front end portion 10 a of the fin 10 .

The support portion 15 is a portion that supports the bearing portion 12 with respect to the case body 3 . In this embodiment, the support portion 15 is formed to extend vertically from the rear portion of the facing portion 14 . The upper and lower end portions of the support portion 15 are in contact with the inner side of the pair of end wall portions 4b of the case body 3 so that the bearing portion 12 is supported by the case body 3 .

Preferably, the bearing portion 12 and the fins 10, more preferably the case body 3 and the fins 10, are molded from the same material having relatively high rigidity, such as fiber-reinforced resin, aluminum, or magnesium. As an example, the bearing portion 12 is made of fiber-reinforced polybutylene terephthalate (PBT) or the like. More preferably, the bearing portion 12 and the fins 10 are made of the same material.

The bearing portion 12 may be formed integrally with the case body 3 or may be formed separately from the case body 3 and assembled to the case body 3 .

1(a) and 1(b) constitutes the rotation center of the fin 10. As shown in FIG. The shaft portion 13 is formed separately from the fins 10 and the bearing portion 12 (case body 3). The shaft portion 13 is formed of a material having lower rigidity than the material forming the fins 10 and the bearing portion 12 (case body 3). Moreover, preferably, the shaft portion 13 is formed of a material having higher wear resistance than the material forming the fins 10 and the bearing portion 12 (the case body 3). As an example, the shaft portion 13 is made of polyacetal (POM), olefinic elastomer (TPO), polyamide (PA), or the like.

The shaft portion 13 is formed in a shaft shape or a longitudinal shape in a predetermined direction. The shaft portion 13 has a fin side connecting portion 20 at one end and a bearing portion side connecting portion 21 at the other end.

The fin-side connecting portion 20 is a portion connected to the fins 10 . The fin-side connecting portion 20 is formed in a columnar or shaft shape. Moreover, the bearing portion-side connecting portion 21 is a portion that is connected to the bearing portion 12 . The bearing portion-side connecting portion 21 is formed in a columnar or shaft shape.

The fin side connecting portion 20 and the bearing portion side connecting portion 21 are arranged coaxially or substantially coaxially. One of the fin-side connecting portion 20 and the bearing-side connecting portion 21 has a circular cross section, and the other has a non-circular cross section. In the present embodiment, the fin side connecting portion 20 is formed with a non-circular cross section, and the bearing portion side connecting portion 21 is formed with a circular cross section. Hereinafter, a cross section refers to a cross section perpendicular to the axial direction of the shaft portion 13 . In the illustrated example, the fin-side connecting portion 20 is formed to have a polygonal cross section. Preferably, the fin-side connecting portion 20 is formed to have a square cross section. That is, the fin-side connecting portion 20 is formed in a prism shape having a pair of side surface portions 20a facing each other and a pair of end surface portions 20b facing each other in a direction crossing the side surface portions 20a. Further, the fin-side connecting portion 20 is formed so as to gradually contract from the base end portion, that is, the side of the bearing-side connecting portion 21 toward the distal end portion, that is, to decrease in thickness.

The fin-side connecting portions 20 are inserted into fin-side holes 23 formed at both ends of the fin 10 in the longitudinal direction. The fin-side hole portion 23 has a shape extending along the longitudinal direction of the fin 10 . The fin-side hole portion 23 is recessed to a depth equal to or greater than the length of the fin-side connecting portion 20 . In the present embodiment, the fin-side hole 23 is formed to have a non-circular cross-section so as to hold the fin-side connecting portion 20 in a non-rotating state. In the illustrated example, the fin-side hole portion 23 is formed in a polygonal cross-sectional shape slightly larger than the maximum outer size of the fin-side connecting portion 20 . Preferably, the fin-side hole 23 is formed to have a square cross section. Further, the fin-side hole portion 23 is arranged so as to be biased to one side of the fin 10 in the lateral direction. In the present embodiment, the fin-side hole 23 is arranged closer to the front end 10a of the fin 10 . Preferably, the fin-side hole 23 is coaxially positioned on the axis of the shape of the front end 10 a of the fin 10 .

Moreover, the bearing portion-side connecting portion 21 is formed in a cylindrical shape. The bearing portion-side connecting portion 21 is inserted into a bearing portion-side hole portion 25 formed in each bearing portion 12 . In this embodiment, the bearing portion-side hole portion 25 is formed in the facing portion 14 of the bearing portion 12 . In the illustrated example, the bearing portion-side hole portion 25 is arranged near the front end portion 14 a of the facing portion 14 of the bearing portion 12 . Preferably, the bearing portion-side hole portion 25 is coaxially positioned on the axis of the shape of the front end portion 14 a of the facing portion 14 . The bearing portion-side hole portion 25 has a shape extending along the longitudinal direction of the fin 10 to be attached, that is, in the left-right direction in this embodiment. The bearing portion-side hole portion 25 is recessed to a depth equal to or greater than the length of the bearing portion-side connecting portion 21 . In the present embodiment, the bearing portion-side hole portion 25 is formed to have a circular cross section so as to be in sliding contact with the outer peripheral surface of the bearing portion-side connecting portion 21 . In the illustrated example, the bearing portion-side hole portion 25 is formed to have a circular cross section slightly larger than the maximum diameter of the bearing portion-side connecting portion 21 .

Further preferably, the shaft portion 13 has a flange portion 27 . The flange portion 27 is a portion located between the fin side connecting portion 20 and the bearing portion side connecting portion 21 and sandwiched between the fin 10 and the bearing portion 12 . The flange portion 27 is a thin plate portion extending like a flange in a direction that intersects or is perpendicular to the axial direction of the shaft portion 13 . The fin side connecting portion 20 is positioned on one surface side of the flange portion 27, and the bearing portion side connecting portion 21 is positioned on the other surface side. Preferably, the flange portion 27 is formed such that its thickness gradually decreases toward the outer edge portion. A gap 29 is formed between the fin 10 and the bearing portion 12 according to the maximum thickness of the flange portion 27 .

When assembling the wind direction adjusting device 1, the fin-side connecting portions 20 of the shaft portion 13 separately formed in advance are inserted into and fixed to the fin-side holes 23 of the fins 10 formed in advance. . At this time, the fin-side connecting portion 20 is inserted into the fin-side hole portion 23 until the flange portion 27 contacts the longitudinal end portion of the fin 10 . That is, the flange portion 27 acts as a stopper when inserting the fin-side connecting portion 20 of the shaft portion 13 into the fin-side hole portion 23 .

Next, the fins 10 with the shaft portions 13 fixed to both ends thereof are assembled to the bearing portions 12 of the case body 3 separately formed in advance. That is, the bearing-side connecting portions 21 of the shaft portion 13 protruding from both ends of the fin 10 in the longitudinal direction are inserted into the bearing-side hole portions 25 of the bearing portion 12 . At this time, the bearing portion-side connecting portion 21 is inserted into the bearing portion-side hole portion 25 until the flange portion 27 contacts the bearing portion 12, which is the facing portion 14 in the present embodiment. That is, the flange portion 27 acts as a stopper when inserting the bearing portion side connecting portion 21 of the shaft portion 13 into the bearing portion side hole portion 25 .

In this state, the flange portion 27 of the shaft portion 13 is sandwiched between the end portion of the fin 10 and the facing portion 14 of the bearing portion 12, and the end portion of the fin 10 and the facing portion 14 of the bearing portion 12 form a gap. 29 to face each other. The fin 10 is positioned between the bearing portions 12 and 12 so as to face the outlet 7 of the case body 3 and is rotatable in the vertical direction, thereby forming the wind direction adjusting device 1 .

When the fins 10 are rotated up and down, the fin-side connecting portions 20 of the shaft portions 13 rotate integrally with the fins 10 while being fixed to the fin-side holes 23 . The bearing portion-side connecting portion 21 is in sliding contact with the inner surface of the bearing portion-side hole portion 25, so that a smooth operational resistance is generated. The vertical rotation of the fins 10 tilts the guide surface with respect to the ventilation direction, so that the wind direction adjusting device 1 changes the direction of the air blown out from the outlet 7 . At this time, since the shaft portion 13 of the fin 10 is positioned coaxially or substantially coaxially with the front end portion 10a of the fin 10, the position of the front end portion 10a does not basically change even when the fin 10 is rotated, and the front end of the facing portion 14 of the bearing portion 12 is not changed. The design is kept in line with the portion 14a. The fins 10 may be directly rotated manually by the occupant, may be rotated by a rotating mechanism including dials and gears, or may be rotated by a rotating mechanism via a motor or the like. good.

Thus, the shaft portion 13 that rotatably connects the bearing portion 12 and the fins 10 is formed separately from the bearing portion 12 and the fins 10, and has lower rigidity than the bearing portion 12 and the fins 10. By doing so, it is possible to suppress contact or sliding contact between the bearing portion 12 and the fin 10, which have relatively high rigidity, when the fin 10 is rotated. It is possible to suppress problems such as powder blowing and low-grade noise due to scraping or abrasion of the portion 12 and the fins 10 .

In addition, since the shaft portions 13 can be individually molded, for example, by using the shaft portions 13 molded using the same mold, the shaft dimensions can be made uniform and stabilized, so that the fins 10 can be rotated. The operation resistance can be stabilized at a high level when it is turned on, good operability can be obtained, and high-quality products can be stably produced. For example, in the case of the airflow direction adjusting device 1 having a plurality of fins 10, by using the shaft portion 13 molded using the same mold for each of the plurality of fins 10, the operational feeling can be easily unified and comfortable. operability can be appropriately maintained.

Further, in the shaft portion 13, the fin side connecting portion 20 connected to the fins 10 has a non-circular cross section, and the bearing portion side connecting portion 21 connected to the bearing portion 12 has a circular cross section. The portion 20 is integrally connected to the fin 10, the bearing portion side connecting portion 21 is rotatable with respect to the bearing portion 12, and the fin 10 is rotatably connected to the bearing portion 12 by the shaft portion 13. The structure can be easily realized, and when the fin 10 connected to the fin side connecting portion 20 of the shaft portion 13 is assembled to the bearing portion 12 of the case body 3, the bearing portion side connecting portion 21 and the bearing portion project from the fin 10 side. Since both the bearing portion-side hole portions 25 of 12 are circular in cross section, there is no need to insert the bearing portion-side connecting portion 21 and the bearing portion 12 side (bearing portion-side hole portion 25) at the same angle. Workability is good even in a limited space inside the case body 3 .

In addition, since the shaft portion 13 has the flange portion 27 sandwiched between the bearing portion 12 and the fin 10, the flange portion 27 forms a gap 29 between the fin 10 and the bearing portion 12. Direct contact between the fin 10 and the bearing portion 12 can be reliably prevented. Therefore, even if the fin 10 and the bearing portion 12 are made of a hard (high-rigidity) material, they may be scraped or worn due to rubbing caused by the rotation of the fin 10, and low-grade noise may be generated. It is possible to reliably prevent problems such as In particular, by forming the shaft portion 13 from a material with higher slidability than the bearing portion 12 and the fins 10, it is difficult to generate operational resistance due to sliding contact between the flange portion 27 and the bearing portion 12 when the fins 10 are rotated. .

In addition, since there is no need to consider problems due to sliding contact between the bearing portion 12 and the fins 10, by forming the bearing portions 12 and the fins 10 from the same material, it is possible to unify the texture of the appearance. , the appearance, that is, the design can be improved.

In addition, even if the mounting position of the wind direction adjusting device 1 is distorted or twisted for some reason and the parallelism between the fins 10 and the bearings 12 is deviated, the shaft 13 may be displaced by a certain degree of angle. can be absorbed, it is possible to prevent a situation in which the operability of the fin 10 is significantly impaired.

In addition, when a load exceeding the normal use is applied to the shaft portion 13, such as when the fin 10 receives an impact and the load is transmitted to the shaft portion 13, the shaft portion 13 can be easily removed from the bearing side hole portion 25. The fins 10 can be dropped from the bearing portion 12 or the case body 3 by falling off or being easily deformed or broken, thereby mitigating the impact. Therefore, even if an occupant comes into contact with the wind direction adjusting device 1 during a vehicle collision, the fins 10 are pushed out to the side opposite to the occupant due to the detachment, and the reaction force to the occupant can be relieved. Therefore, by setting the material of the shaft portion 13 and the outer shape (outer diameter) of the bearing portion side connecting portion 21 or the fin side connecting portion 20 according to the impact absorption performance required as vehicle performance, the design of the wind direction adjusting device 1 can be achieved. The required performance can be achieved only by changing the shaft portion 13 without changing other components. That is, by forming the fins 10 from a hard material, it is possible to ensure the rigidity of the fins 10 and achieve both the rigidity and the contradictory impact absorption performance. Further, by concentrating the damage points on the shaft portion 13 when receiving an impact, the shaft portion 13 can be deformed or broken prior to the fins 10, the bearing portion 12, or the case body 3. The fins 10 can be removed while the shape of the portion 12 or the case body 3 is maintained.

In the above-described embodiment, when there are a plurality of fins 10, or between one end and the other end of the fins 10, the shaft portion 13 is made of different types of materials and has different strength depending on the impact absorption performance. can be different. In this case, the impact absorption performance can be finely adjusted for each part.

Further, although the fin-side connecting portion 20 has a non-circular cross section and the bearing-side connecting portion 21 has a circular cross-section, the fin-side connecting portion 20 has a circular cross-section and the bearing-side connecting portion 21 has a non-circular cross-section. may be In this case, the shapes of the fin-side hole portions 23 and the bearing portion-side hole portions 25 are also set according to the shapes of the fin-side connecting portions 20 and the bearing portion-side connecting portions 21 so that the bearing portions 12 and the fins 10 It is possible to obtain the same effects as those of the above-described embodiment, such as good operability and improved appearance while suppressing the occurrence of troubles caused by contact with the .

Furthermore, although the wind direction adjusting device 1 has been described as a horizontal type, it can be configured in the same manner as a vertical type in which the longitudinal direction of the fins 10 is the vertical direction.

Further, the wind direction adjusting device 1 is not limited to being for automobiles, and may be used for any other purpose.

INDUSTRIAL APPLICABILITY The present invention can be suitably used, for example, as a wind direction adjusting device for automotive air conditioning.

REFERENCE SIGNS LIST 1 wind direction adjusting device 3 case body 10 fin 12 bearing portion 13 shaft portion 20 fin side connecting portion 21 bearing portion side connecting portion 27 flange portion

Claims (4)

a case body having a bearing;
fins and
a shaft portion that rotatably connects the bearing portion and the fin,
The wind direction adjusting device, wherein the shaft portion is separate from the bearing portion and the fins, and has lower rigidity than the bearing portion and the fins. The shaft is
a fin-side connecting portion having a non-circular cross-section that is connected to the fin;
2. The wind direction adjusting device according to claim 1, further comprising: a bearing portion side connection portion having a circular cross section that is connected to the bearing portion. The wind direction adjusting device according to claim 1 or 2, wherein the shaft portion has a flange portion sandwiched between the bearing portion and the fin. The wind direction adjusting device according to any one of claims 1 to 3, wherein the bearing portion and the fins are made of the same material.

Images