Wind direction adjustment device

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

[0001] The present invention relates to a wind direction adjusting device including fins rotatably supported by a bearing portion of a case body.

Background Art

[0002] Conventionally, in an air conditioner used in a vehicle such as an automobile, there is a wind direction adjusting device for adjusting the blowing direction of the air. The wind direction adjusting device includes a case body that partitions an air passage inside, and a plurality of fins disposed inside the case body. The fins are rotatably arranged with respect to the case body, and the rotation of the fins adjusts the wind direction blown out from the air passage (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In order to unify the texture on the appearance, when the case body and the fins are formed of a material having appearance and strength, when the case body and the fins made of the same material are in sliding contact due to the rotation of the fins, they are easily worn and low-grade noise is also likely to occur. Therefore, it is conceivable to rotatably support 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 complication of the structure, and depending on the layout, it may be difficult to set the bearing portion in a location that is difficult to visually recognize from the passenger side.

[0005] Therefore, it is required to obtain comfortable operability while suppressing wear due to contact between parts or the generation of low-grade noise, etc., and to improve the appearance.

[0006] The present invention has been made in view of such points, and an object thereof is to provide a wind direction adjusting device with good operability while suppressing the occurrence of problems caused by contact between a bearing portion and a fin.

Means for Solving the Problems

[0007] The wind direction adjusting device according to claim 1 includes a case body having a bearing portion, a fin, and a shaft portion that rotatably connects the bearing portion and the fin. The shaft portion has a fin-side connecting portion with a non-circular cross-section connected to the fin and a bearing portion-side connecting portion with a circular cross-section connected to the bearing portion. The bearing portion and the fin are separate bodies and have lower rigidity than the bearing portion and the fin. 。

[0008] Claim 2 The wind direction adjusting device according to the description includes claim 1 In the wind direction adjusting device according to the description, the shaft portion has a flange portion sandwiched between the bearing portion and the fin.

[0009] Claim 3 The wind direction adjusting device according to the description includes claim 1 Or 2 In the wind direction adjusting device according to the description, the bearing portion and the fin are formed of the same material.

Effects of the Invention

[0010] According to the wind direction adjusting device according to claim 1, It is possible to easily realize a configuration in which the fin-side connecting portion is integrally connected to the fin and the bearing portion-side connecting portion is rotatable with respect to the bearing portion, and the fin is rotatably connected to the bearing portion by the shaft portion. When assembling the fin with the fin-side connecting portion of the shaft portion to the bearing portion of the case body, it is not necessary to align the angle between the bearing portion-side connecting portion and the bearing portion-side and insert them, and the workability is good, and It is possible to suppress the contact or sliding contact between the bearing portion and the fin having relatively high rigidity when the fin is rotated, suppress the problems caused by such contact, and since the shaft portion can be individually molded, it is possible to achieve the unification and stabilization of the shaft dimensions. Therefore, when the fin is rotated, the operating resistance can be stabilized at a high level, and good operability can be obtained. 。

[0011] Claim 2 According to the wind direction adjusting device according to the description, claim 1In addition to the effects of the described wind direction adjustment device, a gap can be formed between the fins and the bearing portion by the flange portion, reliably preventing direct contact between the fins and the bearing portion.

[0012] Claim 3 According to the wind direction adjustment device described in claim 1 Or 2 In addition to the effects of the described wind direction adjustment device, the unity of the texture in appearance can be achieved, improving the appearance.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Embodiments for Carrying Out the Invention

[0014] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0015] In FIG. 3, reference numeral 1 denotes an air direction adjusting device. The air direction adjusting device 1, also called an air outlet, a ventilator, a register, etc., adjusts the blowing direction of the air from an air conditioner or the like. Hereinafter, for the sake of clarity in the description, the downstream side where the air blows out of the air direction adjusting device 1 is defined as the front side, the front face side or the near side, and the opposite side, that is, the upstream side where the air is received, is defined as the rear side, the back side or the far side, and the lateral direction or the width direction which is the left-right direction when viewed from the front side, and the up-down direction are defined. In the present embodiment, the air direction adjusting device 1 is applied to an air conditioner for a vehicle such as an automobile. The air direction adjusting device 1 may be disposed at an arbitrary position, but in the drawings, it is assumed that 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, the arrow U side is the upper side, and the arrow D side is the lower side. These directions are merely illustrated as an example and are to be appropriately changed depending on the installation position and the installation orientation of the air direction adjusting device 1.

[0016] The air direction adjusting device 1 includes a case body 3. The case body 3 is formed in a cylindrical shape having side walls 4. In the present embodiment, the side walls 4 are formed in a cylindrical shape in the front-rear direction. In the illustrated example, the side walls 4 are formed in a rectangular tubular shape. The side walls 4 surround an air passage 5 inside. The direction parallel to the central axis of the side walls 4 is the ventilation direction of the air passage 5. In the present embodiment, the ventilation direction of the air passage 5 is the front-rear direction, and the air is ventilated from the rear to the front. That is, in the air passage 5, the rear side is the upstream side in the ventilation direction, and the front side is the downstream side in the ventilation direction.

[0017] The side wall 4 has a predetermined length in the ventilation direction of the ventilation passage 5. In the present embodiment, the side wall 4 is flat in the vertical direction and is formed to be long in the left-right direction, that is, horizontally long. Therefore, the wind direction adjusting device 1 is formed in a horizontal and thin shape. The side wall 4 integrally has a pair of side wall portions 4a facing each other across the central portion of the ventilation passage 5, that is, the central axis of the side wall 4 or the case body 3, and a pair of end wall portions 4b connecting between the pair of side wall portions 4a. The pair of side wall portions 4a face each other in the left-right direction, and the pair of end wall portions 4b face each other in the vertical direction. A receiving port 6 for receiving air into the ventilation passage 5 is surrounded by the rear end portions, which are one end portions of the pair of side wall portions 4a, 4a and the pair of end wall portions 4b, 4b, and a blowing port 7 for blowing out air from the ventilation passage 5 is surrounded by the front end portions, which are the other end portions of the pair of side wall portions 4a, 4a and the pair of end wall portions 4b, 4b. That is, the rear end portion, which is one end portion of the case body 3, is the receiving port 6 for receiving air into the ventilation passage 5, and the front end portion, which is the other end portion of the case body 3, is the blowing port 7 for blowing out air from the ventilation passage 5. A ventilation passage 5 communicating between the receiving port 6 and the blowing port 7 is formed therebetween.

[0018] The case body 3 may be integrally formed or may be formed by combining a plurality of members. For example, the front end portion (the blowing port 7) of the case body 3 may be formed by a finisher.

[0019] Fins 10 are arranged in the case body 3. The fins 10 are also called louvers. The fins 10 are arranged facing the blowing port 7. That is, the fins 10 are located on the downstream side of the ventilation passage 5. The fins 10 may be entirely located in the ventilation passage 5 inside the case body 3, or a part thereof may protrude from the blowing port 7 to the outside of the case body 3.

[0020] The fin 10 is formed in a plate shape. At least one of the main surfaces of the fin 10 serves as a guiding surface for guiding the wind. Further, in the present embodiment, the front end portion 10a, which is the end portion on the design side of the fin 10, is formed in a cylindrical surface shape whose axial direction is along the longitudinal direction of the fin 10. The fin 10 may be single or plural. In the present embodiment, one thin and slim fin 10 constitutes the wind direction adjusting device 1. In addition to the fin 10, a louver may be separately arranged on the upstream side of the fin 10 as an air distribution body for adjusting the wind direction in a direction intersecting the longitudinal direction of the fin 10. In this case, for example, an operation portion (operation knob) for operating the louver may be arranged on the fin 10, and the louver may be rotated by a mechanism connected to this operation portion.

[0021] Then, as shown in FIGS. 1(a) and 1(b), both end portions in the longitudinal direction of the fin 10 are rotatably supported by a shaft portion 13 with respect to bearing portions 12 arranged in a case body 3.

[0022] In the present embodiment, as shown in FIG. 3, the bearing portions 12 are respectively arranged on both side portions of the case body 3, that is, inside the side wall portions 4a. That is, the bearing portions 12 are located inside the air passage 5. Preferably, the bearing portions 12 are located on the upstream side, that is, the rear side with respect to the air outlet 7 in the case body 3. In the present embodiment, as shown in FIGS. 2 and 3, the bearing portions 12 integrally include an opposing portion 14 that opposes the end portion in the longitudinal direction of the fin 10 and a support portion 15 that extends in a direction intersecting the longitudinal direction of the fin 10.

[0023] The opposing part 14 is a design part that forms a design integrated with the fin 10 along the longitudinal direction of the fin 10. In the present embodiment, the opposing part 14 is formed to extend in the front-rear direction. The opposing part 14 is formed in a plate shape having the same or substantially the same thickness as the fin 10. The front end part 14a, which is the end part on the design side of the opposing part 14, faces the air outlet 7. The front end part 14a of the opposing part 14 may be located on the downstream side with respect to the air outlet 7. The front end part 14a of the opposing part 14 is formed in a cylindrical surface shape whose axial direction is along the left-right direction. The front end part 14a of the opposing part 14 is formed in the same or substantially the same shape as the front end part 10a of the fin 10. The front end part 14a of the opposing part 14 is located on the same or substantially the same line as the front end part 10a of the fin 10.

[0024] The support part 15 is a part that supports the bearing part 12 with respect to the case body 3. In the present embodiment, the support part 15 is formed to extend vertically from the rear part of the opposing part 14. Both the upper and lower end parts of the support part 15 are in contact with the inside of a pair of end wall parts 4b of the case body 3, and the bearing part 12 is supported by the case body 3.

[0025] Preferably, the bearing part 12 and the fin 10, and more preferably the case body 3 and the fin 10, are molded from the same material having relatively high rigidity, such as fiber-reinforced resin, aluminum, or magnesium. As an example, the bearing part 12 is formed of fiber-reinforced polybutylene terephthalate (PBT) or the like. More preferably, the bearing part 12 and the fin 10 are formed of the same material.

[0026] Note that the bearing part 12 may be integrally formed with the case body 3, or may be formed separately from the case body 3 and assembled to the case body 3.

[0027] And the shaft portion 13 shown in FIGS. 1(a) and 1(b) constitutes the rotation center of the fin 10. The shaft portion 13 is formed separately from the fin 10 and the bearing portion 12 (case body 3). The shaft portion 13 is formed of a material having lower rigidity than the materials constituting the fin 10 and the bearing portion 12 (case body 3). And preferably, the shaft portion 13 is formed of a material having higher wear resistance than the materials constituting the fin 10 and the bearing portion 12 (case body 3). As an example, the shaft portion 13 is formed of polyacetal (POM), olefin-based elastomer (TPO), or polyamide (PA), etc.

[0028] 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-side connecting portion 21 at the other end.

[0029] The fin-side connecting portion 20 is a portion connected to the fin 10. The fin-side connecting portion 20 is formed in a columnar shape or a shaft shape. Also, the bearing-side connecting portion 21 is a portion connected to the bearing portion 12. The bearing-side connecting portion 21 is formed in a columnar shape or a shaft shape.

[0030] The fin-side connecting portion 20 and the bearing-side connecting portion 21 are arranged coaxially or substantially coaxially. Also, either the fin-side connecting portion 20 or the bearing-side connecting portion 21 is formed with a circular cross-section, and the other is formed with 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-side connecting portion 21 is formed with a circular cross-section. Hereinafter, the cross-section refers to a cross-section orthogonal to the axial direction of the shaft portion 13. In the illustrated example, the fin-side connecting portion 20 is formed with a polygonal cross-section. Preferably, the fin-side connecting portion 20 is formed with a square cross-section. That is, the fin-side connecting portion 20 is formed in a prismatic shape having a pair of side surfaces 20a facing each other and a pair of end surfaces 20b facing each other in a direction intersecting the side surfaces 20a. Also, the fin-side connecting portion 20 is formed so as to gradually shrink, that is, the thickness decreases, from the base end portion, that is, the bearing-side connecting portion 21 side, toward the tip end portion.

[0031] The fin-side connecting portion 20 is inserted into fin-side holes 23 formed at both longitudinal ends of the fin 10. The fin-side holes 23 are shaped to extend along the longitudinal direction of the fin 10. The fin-side holes 23 are recessed to a depth greater than or equal to the length of the fin-side connecting portion 20. In the present embodiment, the fin-side holes 23 are formed with 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 holes 23 are formed with a polygonal cross-section that is slightly larger than the maximum outer dimension of the fin-side connecting portion 20. Preferably, the fin-side holes 23 are formed with a square cross-section. Also, the fin-side holes 23 are disposed offset to one side in the short direction of the fin 10. In the present embodiment, the fin-side holes 23 are disposed closer to the front end portion 10a of the fin 10. Preferably, the fin-side holes 23 are coaxially positioned on the axis in the shape of the front end portion 10a of the fin 10.

[0032] Also, the bearing-side connecting portion 21 is formed in a cylindrical shape. The bearing-side connecting portion 21 is inserted into bearing-side holes 25 formed in each bearing portion 12. In the present embodiment, the bearing-side holes 25 are formed in the opposing portion 14 of the bearing portion 12. In the illustrated example, the bearing-side holes 25 are disposed closer to the front end portion 14a side of the opposing portion 14 of the bearing portion 12. Preferably, the bearing-side holes 25 are coaxially positioned on the axis in the shape of the front end portion 14a of the opposing portion 14. The bearing-side holes 25 are shaped to extend along the longitudinal direction of the fin 10 to be attached, which is the left-right direction in the present embodiment. The bearing-side holes 25 are recessed to a depth greater than or equal to the length of the bearing-side connecting portion 21. In the present embodiment, the bearing-side holes 25 are formed with a circular cross-section so as to be in sliding contact with the outer peripheral surface of the bearing-side connecting portion 21. In the illustrated example, the bearing-side holes 25 are formed with a circular cross-section that is slightly larger than the maximum diameter of the bearing-side connecting portion 21.

[0033] Furthermore, preferably, the shaft portion 13 has a flange portion 27. The flange portion 27 is located between the fin side connecting portion 20 and the bearing portion side connecting portion 21, and is a portion sandwiched between the fin 10 and the bearing portion 12. The flange portion 27 is a thin plate portion extending in a flange shape in a direction intersecting or orthogonal to the axial direction of the shaft portion 13. The fin side connecting portion 20 is located on one surface side of the flange portion 27, and the bearing portion side connecting portion 21 is located on the other surface side. Preferably, the flange portion 27 is formed such that its thickness gradually decreases toward the outer edge portion side. A gap 29 is formed between the fin 10 and the bearing portion 12 according to the maximum thickness of the flange portion 27.

[0034] When assembling the wind direction adjusting device 1, the fin side connecting portion 20 of the shaft portion 13, which is pre-formed separately, is inserted and fitted into each fin side hole portion 23 of the pre-formed fin 10 and fixed. 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 the fin side connecting portion 20 of the shaft portion 13 is inserted into the fin side hole portion 23.

[0035] Next, the fin 10 with the shaft portion 13 fixed at both ends is assembled to the bearing portion 12 of the case body 3, which is pre-formed separately. That is, the bearing portion side connecting portion 21 of the shaft portion 13 protruding from both longitudinal ends of the fin 10 is inserted into the bearing portion side hole portion 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, or the opposing portion 14 in this embodiment. That is, the flange portion 27 acts as a stopper when the bearing portion side connecting portion 21 of the shaft portion 13 is inserted into the bearing portion side hole portion 25.

[0036] In this state, the shaft portion 13 is sandwiched between the end portion of the fin 10 and the opposing portion 14 of the bearing portion 12, and the end portion of the fin 10 and the opposing portion 14 of the bearing portion 12 face each other with the gap 29 therebetween. The fin 10 is positioned so as to face the air outlet 7 of the case body 3 between the bearing portions 12 and 12 and be rotatable in the vertical direction, and the wind direction adjusting device 1 is configured.

[0037] When the fin 10 is rotated up and down, the fin-side connecting portion 20 of the shaft portion 13 rotates integrally with the fin 10 while being fixed to the fin-side hole portion 23. However, the bearing-side connecting portion 21 of the shaft portion 13 comes into sliding contact with the inner surface of the bearing-side hole portion 25, thereby generating a smooth operating resistance feeling. When the fin 10 is rotated up and down, the guide surface is inclined with respect to the ventilation direction, so that the air direction adjusting device 1 changes the direction of the air blown out from the air outlet 7. At this time, since the shaft portion 13 is positioned coaxially or substantially coaxially with the front end portion 10a of the fin 10, the position of the front end portion 10a basically does not change even when rotated, and a design in a straight line with the front end portion 14a of the opposing portion 14 of the bearing portion 12 is maintained. Note that the fin 10 may be directly rotated manually by the occupant, may be rotated by a rotation mechanism composed of a dial or a gear, or may be rotated by a rotation mechanism via a motor or the like.

[0038] In this way, by forming the shaft portion 13 that rotatably connects the bearing portion 12 and the fin 10 as a separate body from the bearing portion 12 and the fin 10 and having a lower rigidity than the bearing portion 12 and the fin 10, it is possible to suppress the contact or sliding contact between the bearing portion 12 and the fin 10 having relatively high rigidity when the fin 10 is rotated. Due to these contacts, problems such as powder blowing caused by shaving or wear of the bearing portion 12 and the fin 10, or generation of abnormal noise can be suppressed.

[0039] Moreover, since the shaft portion 13 can be formed individually, for example, by using the shaft portion 13 formed using the same mold, the shaft dimensions can be made identical and stabilized. Therefore, when the fin 10 is rotated, the operating resistance can be stabilized at a high level, good operability can be obtained, and high-quality products can be stably produced. For example, in the case of the air direction adjusting device 1 including a plurality of fins 10, by using the shaft portion 13 formed using the same mold for each of the plurality of fins 10, the operating feeling can be easily unified, and comfortable operability can be appropriately maintained.

[0040] Furthermore, in the shaft portion 13, by making the fin-side connecting portion 20 connected to the fin 10 have a non-circular cross-section and making the bearing-side connecting portion 21 connected to the bearing portion 12 have a circular cross-section, the fin-side connecting portion 20 can be integrally connected to the fin 10, and the bearing-side connecting portion 21 can be made rotatable with respect to the bearing portion 12, so that a configuration in which the fin 10 is rotatably connected to the bearing portion 12 by the shaft portion 13 can be easily realized. When assembling the fin 10 connected to the fin-side connecting portion 20 of the shaft portion 13 to the bearing portion 12 of the case body 3, since both the bearing-side connecting portion 21 protruding from the fin 10 side and the bearing-side hole portion 25 of the bearing portion 12 have a circular cross-section, there is no need to align the angles of the bearing-side connecting portion 21 and the bearing portion 12 side (bearing-side hole portion 25) and insert them, and the workability is good even in the limited space within the case body 3.

[0041] Also, in the shaft portion 13, a flange portion 27 is formed between the bearing portion 12 and the fin 10. Therefore, a gap 29 is formed between the fin 10 and the bearing portion 12 by the flange portion 27, and it can be surely prevented that the fin 10 and the bearing portion 12 come into direct contact. Thus, even when the fin 10 and the bearing portion 12 are formed of a hard (high-rigidity) material, it can be surely prevented that problems such as being scraped or worn due to rubbing caused by the rotation of the fin 10, or the generation of abnormal noise occur. In particular, by forming the shaft portion 13 of a material with higher slidability than the bearing portion 12 and the fin 10, it is less likely that an operating resistance is generated due to the sliding contact between the flange portion 27 and the bearing portion 12 during the rotation of the fin 10.

[0042] Furthermore, since it is not necessary to consider problems caused by the sliding contact between the bearing portion 12 and the fin 10, by forming the bearing portion 12 and the fin 10 of the same material, the unity of the texture in appearance can be achieved, and the appearance, that is, the design can be improved.

[0043] Further, even if the mounting posture of the wind direction adjusting device 1 is distorted or twisted due to some factor and a deviation occurs in the parallelism between the fin 10 and the bearing portion 12, the shaft portion 13 can absorb a certain degree of angular deviation, thus preventing the situation where the operability of the fin 10 is significantly impaired.

[0044] Also, when a load is transmitted to the shaft portion 13 due to the fin 10 being impacted, or when a load greater than normal use is applied to the shaft portion 13, the shaft portion 13 can easily drop out of the bearing portion side hole 25, or be easily deformed or broken, so that the impact can be mitigated by detaching the fin 10 from the bearing portion 12 or the case body 3. Therefore, even when an occupant contacts the wind direction adjusting device 1 during a vehicle collision, for example, the fin 10 can be pushed out toward the non-occupant side due to the above-mentioned dropping, and the reaction force on the occupant can be reduced. Therefore, by setting the material of the shaft portion 13, 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 required performance can be achieved only by changing the shaft portion 13 without changing the design of the wind direction adjusting device 1. That is, by forming the fin 10 from a hard material, it is possible to ensure the rigidity of the fin 10 while achieving both the impact absorption performance that is contrary to the ensuring of the rigidity. Further, by concentrating the damage point at the shaft portion 13 when impacted, the shaft portion 13 can be deformed or broken prior to the fin 10, the bearing portion 12 or the case body 3, and the fin 10 can be detached while the shapes of the fin 10, the bearing portion 12 or the case body 3 are maintained.

[0045] In addition, in the above-described embodiment, when there are a plurality of fins 10, or at one end portion and the other end portion of the fin 10, the shaft portion 13 may have different material types and strengths for each part according to the impact absorption performance. In this case, the impact absorption performance can be finely adjusted for each part.

[0046] Also, although the fin-side connecting portion 20 has a non-circular cross-sectional shape and the bearing portion-side connecting portion 21 has a circular cross-sectional shape, the fin-side connecting portion 20 may have a circular cross-sectional shape and the bearing portion-side connecting portion 21 may have a non-circular cross-sectional shape. In this case, the shapes of the fin-side hole portion 23 and the bearing portion-side hole portion 25 are also set according to the shapes of the fin-side connecting portion 20 and the bearing portion-side connecting portion 21, so that while suppressing the occurrence of problems caused by the contact between the bearing portion 12 and the fin 10, the operability is good and the appearance can be improved. Thus, the same operational effects as those of the above-described embodiment can be achieved.

[0047] Furthermore, although the wind direction adjusting device 1 is of a horizontal type, it can be similarly configured even if it is of a vertical type with the longitudinal direction of the fin 10 being the vertical direction.

[0048] Also, the wind direction adjusting device 1 is not limited to being used for automobiles and may be used for any other arbitrary applications.

Industrial Applicability

[0049] The present invention can be suitably used, for example, as a wind direction adjusting device for air conditioning in automobiles.

Explanation of Reference Numerals

[0050] 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

1. A case body having a bearing portion, fins, and a shaft portion that rotatably connects the bearing portion and the fins, wherein the shaft portion has a fin-side connecting portion with a non-circular cross-section connected to the fins and a bearing portion-side connecting portion with a circular cross-section connected to the bearing portion, and is separate from the bearing portion and the fins and has a lower rigidity than the bearing portion and the fins characterizing the wind direction adjusting device.

2. The shaft portion has a flange portion sandwiched between the bearing portion and the fins characterizing the wind direction adjusting device according to claim 1.

3. The bearing portion and the fins are formed of the same material characterizing the wind direction adjusting device according to claim 1 or 2.

Images