Vehicle side visors

Abstract

To provide a side visor for a vehicle which can restrain wind sound resulting from air stream which flows the outside surface of the side visor during travel of the vehicle.SOLUTION: A side visor for a vehicle holds a side visor 9 which consists of an inclined region 9a corresponding to an A pillar 7 of a vehicle body and a horizontal region 9b corresponding to a roof 8 to an upper part of a window frame 4 of a left front door 1 and forms a stationary place to the window frame 4 as a stationary end 9c and a lower end part extending from the stationary end 9c in a left side direction and a downward direction as an opening end 9d. It is configured so as to line up fins 12-#1 to 12-#10 over the whole longitudinal direction of the outside surface of the side visor 9, and to form each of the fins 12-#1 to 12-#10 so as to form projection extending from an upstream part 12f which positions to an opening end 9d side toward a downstream part 12r which positions to a stationary end 9c side in a rearward direction and an inclined upward direction.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a side visor for a vehicle. [Background technology]

[0002] As a conventional side visor for a vehicle of this type, for example, Patent Document 1 discloses one that is attached to the side door of a cab-over truck. The side visor mainly consists of a first cover part that covers the upper part of the window frame of the side door, a second cover part disposed below the first cover part, and a third cover part that covers the space between the first and second cover parts and has two through holes in the front part, and ribs extend substantially horizontally rearward from the lower edges of the two through holes of the third cover part.

[0003] When the truck is moving, air flows from the front to the rear on the outer surface of the side visor. When the window glass is lowered, the air inside the cab is exhausted to the outside through the opening between the upper edge of the window glass and the side visor and through the two through holes. At this time, each rib acts to straighten the air sucked out from each through hole, and the air from each through hole flows smoothly to the rear along the surface of the side visor and each rib, suppressing wind noise. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2011-189831 A Summary of the Invention [Problem to be solved by the invention]

[0005] However, while the vehicle side visor described in Patent Document 1 can reduce wind noise caused by the air flow that passes through the holes from inside the cab and is discharged to the outside, it cannot suppress wind noise caused by the air flow that flows along the outer surface of the side visor. In short, the side visor has a cross-sectional shape extending from a fixed end fixed to the upper part of the window frame of the side door to an open end located outwardly and downwardly. As a result, the open end of the side visor is spaced outwardly from the window glass to form a gap.

[0006] On the other hand, the wind that a moving vehicle receives flows along the outer surfaces of the vehicle body, such as the hood, roof, and left and right fenders. This wind flows rearward from the fixed end on the outer surface of the side visor, and creates an oblique airflow that flows outward and downward following the shape of the outer surface. When the airflow reaches the open end of the side visor, it flows inward from the open end, more specifically, into the gap formed between the open end and the window glass, forming a large vortex and generating wind noise.

[0007] The ribs of the vehicle side visor in Patent Document 1 extend rearward from the through holes, so they can guide the air exhausted from inside the cab to the outside, but they cannot prevent the airflow from turning around at the open end of the side visor as described above. Therefore, there has been a demand for a fundamental solution to wind noise. The present invention has been made to solve such problems, and its object is to provide a vehicle side visor that can suppress wind noise caused by airflow flowing over the outer surface of the side visor while the vehicle is traveling. [Means for solving the problem]

[0008] In order to achieve the above-mentioned object, the vehicle side visor of the present invention is attached to the upper part of the window frame of a vehicle side door, has a cross-sectional shape extending from a fixed end fixed to the window frame to an open end located outward and downward, and covers the upper part of the window frame from the outside, and is characterized in that a fin forming a protruding stripe is formed on the outer surface of the side visor, protruding outward and extending diagonally upward and rearward of the vehicle from an upstream part located on the open end side to a downstream part located on the fixed end side (Claim 1).

[0009] In another embodiment, the fins may be provided in a plurality of rows at intervals in the longitudinal direction of the side visor (claim 2). In another aspect, the window frame of the side door may have an inclined frame extending rearward and upward along the front pillar of the vehicle, and a horizontal frame extending rearward from the rear end of the inclined frame along the roof of the vehicle, the side visor may consist of an inclined region corresponding to the inclined frame of the window frame, and a horizontal region corresponding to the horizontal frame of the window frame, and fins may be formed at least on the inclined region (Claim 3).

[0010] In another aspect, the fins may be arranged in multiple rows in the longitudinal direction of the side visor throughout the entire inclined and horizontal regions, and the distance between adjacent fins in the inclined region may be set smaller than the distance between adjacent fins in the horizontal region (Claim 4). In another embodiment, the upstream portion of the fin may be located in the vicinity of the open end of the side visor (claim 5).

[0011] In another embodiment, the upstream portion of the fin may have a sharp tip when viewed from the outside (claim 6). In another embodiment, the fin is Car The curved shape may be such that the inclination of both rearward directions gradually increases from the upstream portion to the downstream portion (claim 7).

[0012] In another aspect, the fin may be a protrusion having a substantially triangular cross section formed by a first surface facing forward and upward of the vehicle and a second surface facing rearward and downward of the vehicle, the first surface forming a surface that slopes diagonally rearward outward from the outer surface of the side visor, and the second surface forming a surface that extends at a substantially right angle from the outer surface of the side visor toward the outer end of the first surface (Claim 8).

[0013] In another embodiment, the downstream portion of the fin corresponds to the position of the downstream portion. Vehicle A downstream flat portion having a flat shape cut along a tangent line at the location of the front pillar or the location of the roof may be formed (claim 9). In another aspect, the side visor may have a curved surface extending outward and downward from the fixed end, a flat surface extending downward from the lower end of the curved surface, and a cross-sectional shape with the lower end of the flat surface as an open end, the downstream portion of the fin is positioned near the lower end of the curved surface of the side visor, and a section near the downstream portion of the first surface may be smoothly continuous with the curved surface of the side visor when viewed from the fore-and-aft direction of the vehicle (Claim 10). Effect of the Invention

[0014] According to the vehicle side visor of the present invention, it is possible to suppress wind noise caused by airflow passing over the outer surface of the side visor while the vehicle is traveling. [Brief description of the drawings]

[0015] [Figure 1] 1 is a perspective view showing a left front door to which a passenger vehicle side visor according to an embodiment is attached; [Diagram 2] FIG. 4 is a left side view showing a side visor together with the window frame of the left front door. [Diagram 3] 3 is a detailed view of part a in FIG. 2 showing fins formed on the side visor. FIG. [Figure 4] FIG. 1 is a left side view of a left front door window frame illustrating airflow over the exterior surface of a prior art side visor while the vehicle is moving. [Diagram 5] 3 is a view corresponding to FIG. 2 and showing another example in which the distance between adjacent fins in the inclined region and the parallel region of the side visor is different. FIG. [Figure 6] 4 is a view corresponding to FIG. 3 and showing another example in which a downstream flat portion is formed on the downstream portion of the fin. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, an embodiment of the present invention will be described in which the present invention is embodied in a side visor to be attached to a front side door (hereinafter referred to as a front door) of a passenger vehicle. Fig. 1 is a perspective view showing a left front door to which a passenger vehicle side visor of this embodiment is attached, and Fig. 2 is a left side view showing the side visor together with the window frame of the left front door. In the following description, the front-rear, left-right, and up-down directions are defined based on the vehicle. In addition, since the left and right side visors have the same shape and are symmetrical, the following description will focus on the left side side visor, and the description of the right side visor will be omitted.

[0017] As shown in these figures, the left front door 1 is made by joining a press-molded outer panel 1a and an inner panel 1b, and is connected to the left-hand side entrance of the vehicle body (not shown) by a hinge so that it can be opened and closed. A side mirror 2 and a door handle 3 are provided on the outer surface of the left front door 1, and a window frame 4 is formed at the top so that the door can be opened and closed by a window glass 5 that can be raised and lowered.

[0018] The window frame 4 is composed of an inclined frame 4a extending rearward and upward along the A-pillar 7 (front pillar) of the vehicle body from a triangular decorative plate 6 attached to the front of the left front door 1, a horizontal frame 4b extending rearward from the rear end of the inclined frame 4a along the roof 8 of the vehicle body, and a vertical frame 4c extending downward from the rear end of the horizontal frame 4b. The side visor 9 is attached to the upper part of the window frame 4, i.e., the inclined frame 4a and the horizontal frame 4b, and has a curved shape at the boundary between the A-pillar 7 and the roof 8 when viewed from the left side. Hereinafter, the part of the side visor 9 corresponding to the inclined frame 4a of the window frame 4 is referred to as the inclined region 9a, and the part corresponding to the horizontal frame 4b is referred to as the horizontal region 9b. For example, the side visor 9 is integrally manufactured by injection molding a synthetic resin material, and is fixed to the window frame 4 with a double-sided tape 10 (shown in FIG. 3) or the like.

[0019] Fig. 3 is a detailed view of part a in Fig. 2, showing the fins formed on the side visor 9. In addition, in the same drawing, a partial left side view of the side visor 9 is shown, and XX cross section and YY cross section are also shown to clarify the relationship with the left side view. The cross-sectional shapes (e.g., XX cross section) when the side visor 9 is cut vertically are similar to each other, although they gradually change depending on the longitudinal position of the side visor 9. For example, as shown in the XX cross section, the side visor 9 has a fixed end 9c at a location fixed to the horizontal frame 4b of the window frame 4 by the double-sided tape 10, and has a cross-sectional shape that extends from this fixed end 9c to an open end 9d located on the left side and below, covering the upper part of the window frame 4 from the left side.

[0020] In detail, a curved surface 9e having a curved cross section extends downward to the left from the fixed end 9c of the side visor 9, a flat surface 9f having a straight cross section extends downward from the lower end of the curved surface 9e, and an open end 9d bent to the right is formed at the lower end of the flat surface 9f. As a result, the open end 9d of the side visor 9 is spaced to the left from the window glass 5, and air inside the vehicle cabin is discharged to the outside through this gap when the window glass 5 is lowered.

[0021] 4 is a left side view of the window frame of the left front door showing the airflow flowing on the outer surface of the side visor while the vehicle is traveling, and this side visor corresponds to the conventional technology to which the present invention is not applied, for example, the side visor of Patent Document 1. To make the explanation easier to understand, the same component numbers as in the embodiment are used to explain. As shown by the arrow in FIG. 4, the wind received by the traveling vehicle generates an oblique airflow Fair1 on the outer surface of the side visor 9, which flows rearward from the fixed end 9c and also flows outward and downward following the shape of the outer surface.

[0022] When such air flow Fair1 reaches the open end 9d of the side visor 9, it flows from the open end 9d to the right side, more specifically, into the gap formed between the open end 9d and the window glass 5, and forms a large vortex at the open end 9d of the side visor 9. The vortex at this time is formed as a large vortex with the same phase over the entire longitudinal direction of the side visor 9 (more specifically, from the front end of the inclined region 9a to the rear end of the horizontal region 9b), which generates a large wind noise.

[0023] In view of the above phenomenon, the present inventor has found a measure to provide fins on the outer surface of the side visor 9 in order to suppress the air flow Fair1 from flowing around the open end 9d and to disrupt the phase, and the details of this measure will be described below. 2, in this embodiment, a total of ten fins 12-#1 to 12-#10 are arranged at equal intervals in a row over the entire longitudinal direction of the outer surface of the side visor 9, and each of the fins 12-#1 to 12-#10 is integrally formed on the flat surface 9f during injection molding of the side visor 9. Although details will be described later, the shape (posture and size) of each of the fins 12-#1 to 12-#10 gradually changes in the longitudinal direction of the side visor 9.

[0024] Hereinafter, the sixth fin 12-#6 from the front side will be described as a representative. As shown by the two-dot chain line in Figs. 2 and 3, the A-pillar 7 and roof 8 of the vehicle body are smoothly connected to each other along an arc of large curvature, and the shape of each fin 12-#1 to 12-#10 is set based on the tangent tanL of the point corresponding to the front-rear position of each fin 12-#1 to 12-#10 on the A-pillar 7 and roof 8 (for example, point P in Fig. 3 for the fin 12-#6) on the A-pillar 7 and roof 8. The intention is based on the viewpoint that, since the wind along the A-pillar 7 and roof 8 flows onto the side visor 9, the shape of the fins 12-#1 to 12-#10 can be set so that the tanL of the A-pillar 7 and roof 8 can appropriately suppress the turning around of the air flow Fair1 at the open end 9d and can break the phase from upstream to downstream (described later).

[0025] As shown in the XX cross section in Fig. 3, the fin 12-#6 is provided on the outer surface of the side visor 9, specifically, on a flat surface 9f facing the left side. In addition, when viewed from the left side, the fin 12-#6 forms a protrusion extending obliquely upward and rearward of the vehicle from the open end 9d side of the side visor 9 toward the fixed end 9c side, and has an upwardly arched shape. In the following description, the part of the fin 12-#6 facing forward and upward of the vehicle is referred to as the upper surface 12a (first surface), the part facing backward and downward of the vehicle is referred to as the lower surface 12b (second surface), the end located on the open end 9d side is referred to as the upstream portion 12f, and the end located on the fixed end 9c side is referred to as the downstream portion 12r.

[0026] In addition, the dimension of the fin 12-#6 in a direction perpendicular to the tangent line tanL at a point P of the A-pillar 7 corresponding to the front-rear position of the fin 12-#6 is referred to as the vertical length L1, and the dimension of the fin 12-#6 in a direction along the tangent line tanL is referred to as the vertical length L2. The dimension of the flat surface 9f in a direction perpendicular to the tangent line tanL is referred to as the vertical width W, and the distance between the adjacent fins 12-#5 and 12-#7 is referred to as the separation distance L0. In addition, in the XX cross section, the height of the fin 12-#6 from the flat surface 9f is referred to as the protruding height H.

[0027] As shown in FIG. 3, the shape of the fin 12-#6 is formed so as to satisfy the following conditions. 1) When viewed from the left side, the upstream portion 12f is located near the lower end of the flat surface 9f, in other words, near the open end 9d. 2) When viewed from the left side, the upstream portion 12f has a pointed shape. 3) When viewed from the left side, the angle θ1 of the upstream portion 12f with respect to the tangent line tanL is set to 30°. This determines the approximate attitude of the fin 12-#6. 4) In the detail of portion A as viewed from the left side, the downstream portion 12r has a shape that smoothly continues to the tangent line tanL. More specifically, the fin 12-#6 has a curved shape in which the inclination of the fin 12-#6 toward the vehicle rear 12-#6 gradually increases (upwardly arching) from the upstream portion 12r toward the downstream portion 12f so that the direction of the downstream portion 12r as viewed from the left side approaches the direction of the tangent line tanL at the point P of the A-pillar 7 corresponding to the position of the downstream portion 12r. 5) In the cross section XX, the downstream portion 12r forms an angle θ2 with the flat surface 9f, and the inclined flat surface portion 12c formed thereby smoothly continues from the curved surface 9e. 6) When viewed from the left side, the downstream portion 12r remains below the upper end of the flat surface 9f. As a result, the vertical length L1 of the fin 12-#6 accounts for 90% of the vertical width W of the flat surface 9f.

[0028] By determining the angle θ1 of the upstream portion 12f in condition 3) and the vertical length L1 in condition 6, the front-to-rear length L2 is automatically determined, and as a result, the overall size of the fin 12-#6 is also determined. 7) When viewed from the left side, the separation distance L0 between adjacent fins 12-#5 and between adjacent fins 12-#7 is set to 50% of the front-rear length L2. Since the vertical width W of the flat surface 9f varies in the longitudinal direction of the side visor 9, the front-rear lengths L2 of adjacent fins 12-#1 to 12-#10 may differ slightly. Therefore, for example, when the front-rear lengths L2 of the fins 12-#6 and 12-#5 differ, the separation distance L0 is determined based on the front-rear length L2 of one of them or the average value of both. 8) In the YY cross section, the cross-sectional shape of the upper surface 12a is an arc cross section rising from the flat surface 9f in an arc shape. Therefore, the upper surface 12a forms a surface that is inclined from the outer surface of the side visor 9 toward the outside and obliquely rearward. 9) In the YY cross section, the cross-sectional shape of the lower surface 12b forms a right-angled cross section rising at a right angle from the flat surface 9f. Therefore, the lower surface 12b forms a surface that extends at a substantially right angle from the outer surface of the side visor 9 toward the outer end of the upper surface 12a.

[0029] The upper surface 12a and the lower surface 12b of the fin 12-#6 form a protrusion having a substantially triangular cross section. 10) In the cross section XX, the protruding height H from the flat surface 9f is set to about 5 mm to 15 mm in the entire region in the longitudinal direction except for the upstream portion 12f and the downstream portion 12r. Although the above has been a description of the shape of the fin 12-#6, the shapes of the other fins 12-#1 to 12-#5 and 12-#7 to 12-#10 are set in the same manner.

[0030] Next, the wind noise suppression effect of the side visor 9 for a passenger vehicle configured as above will be described. The wind that a moving vehicle receives flows along the outer surfaces of the vehicle body, such as the bonnet, A-pillar 7, roof 8, and left and right fenders, and generates an oblique airflow Fair1 that flows rearward and outward from the fixed end 9c on the outer surface of the side visor 9, as described with reference to Fig. 4. Each of the fins 12-#1 to 12-#10 provided on the side visor 9 of this embodiment suppresses wind noise by changing the flow direction of the airflow Fair1. Hereinafter, the suppression effect of this wind noise will be described using the fifth fin 12-#5 from the front side shown in Fig. 3 as an example, but the other fins 12-#1 to 12-#4, 12-#6 to 12-#10 also have the same effect.

[0031] The fin 12-#5 is formed to form a protrusion on the outer surface of the side visor 9, as shown in the YY cross section in Fig. 3. Therefore, part of the air flow Fair1 flows from the upper surface 12a over the fin 12-#5 to the lower surface 12b, as shown by the arrow Fair2 in Fig. 3, and is converted into an air flow Fair2 that flows backward along the lower surface 12b while forming a small vortex. In other words, by being converted into the air flow Fair2, the air flow Fair1 is prevented from reaching the open end 9d of the side visor 9.

[0032] In addition, a part of the air flow Fair1 passes over the upper surface 12a of the fin 12-#5 without passing over the fin 12-#5 and is swept rearward as an air flow Fair1'. Therefore, this air flow Fair1' is also prevented from reaching the open end 9d of the side visor 9. Furthermore, the remaining air flow Fair1 passes through the area in front of the upstream portion 12f of the fin 12-#5, i.e., the area corresponding to the axial distance L0 between the downstream portion 12r of the fin 12-#4, and reaches the open end 9d of the side visor 9 as an air flow Fair1". Such air flow Fair1" is generated between adjacent fins 12-#1 to 12-#10, and reaches the open end 9d in a state separated from each other by each of the fins 12-#1 to 12-#10 over the entire longitudinal direction of the side visor 9, generating small vortices individually.

[0033] In the conventional technology without fins described based on FIG. 4, the airflow Fair1 in the same direction flows around the open end 9d of the side visor 9 all at once, generating a large vortex with the same phase over the entire fore-and-aft direction of the side visor 9, which causes a large wind noise. In contrast, in this embodiment, the air flow Fair1 is diverted by the fins 12-#1 to 12-#10 to generate the air flow Fair2, the air flow Fair1' and the air flow Fair1'', but among them, the air flow Fair2 and the air flow Fair1' do not reach the open end 9d of the side visor 9. As for the air flow Fair2, although it forms a small vortex as it flows rearward along the lower surfaces 12b of the fins 12-#1 to 12-#10, the generated wind noise is also small because the vortex is small.

[0034] In addition, the air flow Fair1" reaches the open end 9d of the side visor 9, but is separated from each other over the entire longitudinal direction of the side visor 9 in the process of passing between the fins 12-#1 to 12-#10. Each of the separated air flows Fair1" generates a small vortex at the open end 9d, but because the vortex is small, the generated wind noise is also small. As described above, the air flow Fair1' hardly forms a vortex, and the vortex formed by the air flow Fair2 and the air flow Fair1'' is very small and cannot become a large vortex with a uniform phase over the entire fore-and-aft direction of the side visor 9 as in the conventional technology not equipped with fins. Therefore, even if wind noise is generated due to the vortex, it will be smaller than the wind noise generated by the conventional technology.

[0035] The above is the basic wind noise suppression effect of the side visor 9 of this embodiment, and the above conditions 1) to 10) are set to obtain this effect more significantly. However, conditions 1) to 10) are additional requirements and do not necessarily have to be applied. For example, the present invention includes cases where not all conditions are satisfied. The effects obtained by each of the conditions 1) to 10) will be explained below.

[0036] Due to conditions 1), 6) and 10), the fins 12-#1 to 12-#10 are formed on the flat surface 9f of the side visor 9, and have a sufficient vertical length L1 (equivalent to 90% of the vertical width W) from the lower end of the flat surface 9f, as well as a uniform protruding height H in the longitudinal direction. The flat surface 9f, which is approximately parallel to the traveling wind, is less susceptible to airflow separation, and the fins 12-#1 to 12-#10, which have a sufficient length and a uniform protruding height H in the longitudinal direction, can smoothly guide the traveling wind to satisfactorily generate the airflow Fair2, the airflow Fair1' and the airflow Fair1".

[0037] For example, the position of the upstream portion 12f of the fins 12-#1 to 12-#10 on the flat surface 9f may be changed, or the vertical length L1 of the fins 12-#1 to 12-#10 may be changed. Also, the protruding height H of the fins 12-#1 to 12-#10 may be changed, or the protruding height H may be changed in the longitudinal direction of the fins 12-#1 to 12-#10. In addition, due to condition 2), if the upstream portions 12f of the fins 12-#1 to 12-#10 have a pointed shape, it is easier to guide the running wind and create an opportunity to generate the air flows Fair2, Fair1', and Fair1'', which in turn contributes to the generation of good air flows Fair2, Fair1', and Fair1''.

[0038] Moreover, due to condition 4), the downstream portion 12r of the fins 12-#1 to 12-#10 smoothly continues to the tangent line tanL, and due to condition 5), the inclined flat portion 12c formed on the downstream portion 12r of the fins 12-#1 to 12-#10 smoothly continues to the curved surface 9e of the side visor 9. As a result, the airflow Fair2 flowing along the lower surface 12b of the fins 12-#1 to 12-#10 and the airflow Fair1' flowing along the upper surface 12a are separated from the downstream portion 12r without being significantly disturbed, which also contributes to the generation of good airflows Fair2 and Fair1'.

[0039] Furthermore, according to condition 8), when the upper surfaces 12a of the fins 12-#1 to 12-#10 have an arc-shaped cross section, the air flow Fair2 passes over the upper surfaces 12a and over the fins 12-#1 to 12-#10 smoothly, which also contributes to the generation of a good air flow Fair2. In addition, according to condition 9), if the lower surfaces 12b of the fins 12-#1 to 12-#10 have a rectangular cross section, the air flow Fair2 that passes over the fins 12-#1 to 12-#10 becomes more likely to separate from the lower surfaces 12b, which also contributes to the generation of a good air flow Fair2.

[0040] Further, due to condition 3), the upstream portion 12f of the fins 12-#1 to 12-#10 is set at a predetermined angle θ1 (=30°) with respect to the tangent tanL of the A-pillar 7 or the roof 8. During vehicle travel, the traveling wind along the A-pillar 7 or the roof 8 flows onto the side visor 9 as the airflow Fair1, so the inflow direction of the airflow Fair1 onto the outer surface of the side visor 9 depends on the angles of the A-pillar 7 or the roof 8. Therefore, the angle θ1=30° determined with respect to the tangent tanL of the A-pillar 7 or the roof 8 is an appropriate angle for generating the appropriate airflows Fair2, Fair1', and Fair1'', and can be regarded as an appropriate posture of the fins 12-#1 to 12-#10. Therefore, the appropriate airflows Fair2, Fair1', and Fair1'' can be formed to maximize the suppression effect of wind noise. The fin angle θ1 is not limited to 30° and can be changed.

[0041] In addition, due to condition 7), the separation distance L0 between adjacent fins 12-#1 to 12-#10 is set to 50% of the front-to-rear length L2 of the fins 12-#1 to 12-#10. When the separation distance L0 is reduced, the arrangement of the fins 12-#1 to 12-#10 gradually changes from sparse to dense, and the number of fins 12-#1 to 12-#10 and, accordingly, the number of air flows Fair2, Fair1' and Fair1" increases accordingly. When the fin arrangement is sparse due to a large separation distance L0, not only is it impossible to obtain a sufficient wind noise suppression effect, but also when the fin arrangement becomes excessively dense due to a reduction in the separation distance L0, the desired flows of the air flows Fair2, Fair1' and Fair1" cannot be achieved, and the wind noise suppression effect is reduced. By determining an appropriate separation distance L0 based on the front-to-rear length L2 of the fins 12-#1 to 12-#10, it is possible to generate just the right amount of airflow Fair2, airflow Fair1', and airflow Fair1'', which helps to suppress wind noise.

[0042] Although the description of the embodiment is finished above, the aspect of the present invention is not limited to this embodiment. For example, in the above embodiment, the side visor 9 is embodied in the front door 1 of a passenger vehicle, but the present invention is not limited to this. For example, the present invention may be applied to a side visor for a rear side door of a passenger vehicle, or to a side visor for a side door of a cab-over type truck in which the A-pillar is hardly inclined as described in Patent Document 1.

[0043] In the above embodiment, the fins 12-#1 to 12-#10 are arranged at equal intervals over the entire length of the side visor 9, but the present invention is not limited to this. For example, in the side visor 9 for the front door 1, the airflow turns around noticeably in the inclined region 9a corresponding to the A-pillar 7, and when a vortex is generated by the airflow turning around at the frontmost part of the side visor 9, the vortex gradually grows rearward and generates a loud wind noise. Therefore, the fins 12-#1 to 12-#10 may be arranged on the side visor 9 as described below. a) As shown in FIG. 5, in the inclined region 9a of the side visor 9, the multiple fins 12-#1 to 12-#10 may be densely arranged (the separation distance L0 may be reduced), and in the horizontal region 9b, the multiple fins 12-#11 to 12-#14 may be sparsely arranged (the separation distance L0 may be increased). b) Although not shown, the arrangement of the multiple fins 12-#1 to 12-#10 may be continuously changed from dense to sparse across the front to rear of the side visor 9 (the separation distance L0 may be continuously increased). c) Although not shown, a plurality of fins 12-#1 to 12-#10 may be arranged in a row only in the inclined region 9a. d) Although not shown, a single fin 12-#1 may be provided only on the frontmost portion of the inclined region 9a of the side visor 9.

[0044] In the above embodiment, the downstream portions 12r of the fins 12-#1 to 12-#10 are smoothly connected to the tangent line tanL based on condition 4), but the present invention is not limited to this. For example, as shown in Fig. 6, the downstream portions 12r of the fins 12-#1 to 12-#10 may be cut along the tangent line tanL to form a flat downstream flat portion 12d. As with condition 4), the airflows Fair2 and Fair1' generated along the upper surfaces 12a of the fins 12-#1 to 12-#10 can be smoothly separated from the downstream portions 12r of the fins 12-#1 to 12-#10 without being significantly disturbed. [Explanation of symbols]

[0045] 1 Left front side door 4. Window Frame 4a Inclined frame 4b horizontal frame 7 A-pillar (front pillar) 8 Roof 9 Side visor 9a Slope area 9b horizontal area 9c fixed end 9d open end 9e Curved Surface 9f flat surface 12-#1~12-#14 Rib 12a Top surface (1st surface) 12b Bottom surface (2nd surface) 12f upstream part 12r downstream 12c Oblique plane part 12d Downstream plane section L1 Fin length L2 Fin length L0 separation distance W: Vertical width of flat surface tanL tangent

Claims

1. A side visor for a vehicle is attached to an upper portion of a window frame of a side door of a vehicle, has a cross-sectional shape extending from a fixed end fixed to the window frame to an open end on the outer side and downward, and covers the upper portion of the window frame from the outer side, A side visor for a vehicle, characterized in that a fin protruding outward is formed on an outer surface of the side visor, the fin forming a protrusion extending diagonally upward and rearward of the vehicle from an upstream portion located on the open end side toward a downstream portion located on the fixed end side.

2. The fins are arranged in a plurality of rows at intervals in the longitudinal direction of the side visor.

2. The side visor for a vehicle according to claim 1.

3. the window frame of the side door has an inclined frame extending rearward and upward along a front pillar of the vehicle, and a horizontal frame extending rearward from a rear end of the inclined frame along a roof of the vehicle, The side visor comprises an inclined region corresponding to the inclined frame of the window frame, and a horizontal region corresponding to the horizontal frame of the window frame; The fins are formed at least in the inclined region.

3. The side visor for a vehicle according to claim 1 or 2.

4. The fins are arranged in a plurality of rows in the longitudinal direction of the side visor throughout the inclined region and the horizontal region, and the distance between adjacent fins in the inclined region is set smaller than the distance between adjacent fins in the horizontal region.

4. The side visor for a vehicle according to claim 3.

5. The upstream portion of the fin is located near the open end of the side visor. The side visor for a vehicle according to any one of claims 1 to 4.

6. The upstream portion of the fin has a pointed shape when viewed from the outside. The side visor for a vehicle according to any one of claims 1 to 5.

7. The fin has a curved shape in which the inclination toward the rear of the vehicle when viewed from the outside gradually increases from the upstream portion toward the downstream portion. The side visor for a vehicle according to any one of claims 1 to 6.

8. the fin is a protrusion having a substantially triangular cross section formed by a first surface facing forward and upward of the vehicle and a second surface facing rearward and downward of the vehicle, The first surface forms a surface that is inclined obliquely rearward and outward from an outer surface of the side visor, The second surface forms a surface extending at a substantially right angle from the outer surface of the side visor toward the outer end of the first surface. The side visor for a vehicle according to any one of claims 1 to 7.

9. The downstream portion of the fin is formed with a downstream flat portion having a flat shape cut along a tangent line at a location of the front pillar or a location of the roof of the vehicle corresponding to the position of the downstream portion. The side visor for a vehicle according to any one of claims 1 to 8.

10. The side visor has a cross-sectional shape in which a curved surface extends outwardly and downwardly from the fixed end, a flat surface extends downwardly from a lower end of the curved surface, and the lower end of the flat surface is the open end, The downstream portion of the fin is located near the lower end of the curved surface of the side visor, A cross section of the first surface near the downstream portion is smoothly connected to the curved surface of the side visor when viewed from the vehicle front-rear direction.

9. The side visor for a vehicle according to claim 8.

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