Side visor

Abstract

To provide a side visor that can reduce wind noise, by dispersing separated-flow from the side visor.SOLUTION: A side visor 1 is configured to include a flange part 3 in a long belt-shape that can be mounted on a window frame 2 of a front door of a vehicle V, which is mounted on the window frame 2 through mounting means, and a visor body 4 formed in a long belt-shape along the flange part 3, in which are formed a slope visor part 5a disposed along a slope part at a front side of the window frame 2 and a horizontal visor part 5b disposed along a horizontal part at a rear side of the window frame 2, where convex guide parts 6 for guiding travel-wind W upward and outward are provided on an outer surface of the slope visor part 5a. Further, the slope visor part 5a comprises a plurality of guide parts 6 on the outer surface thereof, and the plurality of guide parts 6, which are in mounted states, comprise first guide surfaces 7 sloping to outside in a lateral direction of a vehicle body, from a front side of the vehicle body toward a rear side thereof and second guide surfaces 8 sloping upward from the front side of the vehicle body toward the rear side thereof.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a side visor that is attached to an automobile and can reduce wind noise while the automobile is running. [Background technology]

[0002] Conventionally, when a side visor is attached to the side window frame of an automobile, vortices (hereinafter referred to as separated flows) that form on the surface of the side glass due to airflow that passes through the portion of the side visor attached to the leading edge of the side window frame as the automobile moves are thought to be one of the causes of wind noise. The larger the vortex and the higher the negative pressure caused by the vortex, the louder the wind noise. To suppress this wind noise, Patent Document 1 discloses a side visor with an inclined surface that is formed so as to move away from the side glass from the middle of the extension direction of the visor's flange (covering body) toward the extension end (rear end). Patent Document 1 directs the airflow along the inclined surface and temporarily moves it away from the side glass, causing the vortex that causes wind noise to form at a position away from the extension end of the cover body in the extension direction and normal to the surface of the side glass. This reduces the negative pressure caused by the vortex, thereby reducing wind noise. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-22130 Summary of the Invention [Problem to be solved by the invention]

[0004] However, with a side visor like that in Patent Document 1, although the position where the vortex is generated changes, the size of the vortex itself does not change, so it can be said that the effect of reducing wind noise is limited.

[0005] Therefore, an object of the present invention is to provide a side visor that can reduce wind noise by dispersing the separated airflow from the side visor. [Means for solving the problem]

[0006] In order to achieve the above object, the invention described in claim 1 is a side visor that can be attached to a window frame of a front door of an automobile and includes a long, band-like flange that is attached to the window frame via an attachment means, and a canopy formed in a long, band-like shape along the flange, and is formed with an inclined visor portion that follows the inclined portion on the front side of the window frame and a horizontal visor portion that follows the horizontal portion on the rear side of the window frame, and has a groove formed on the outer surface of the inclined visor portion for guiding traveling wind in different directions. Convex The guide parts are provided integrally or separately so as to be in a row along the longitudinal direction of the inclined visor part, and two guide parts adjacent to each other in the longitudinal direction among the plurality of guide parts are, when attached to the window frame, The upper end of the lower guide portion is positioned lower than the lower end of the upper guide portion. It is characterized by: The invention described in claim 2 is characterized in that, in the configuration of claim 1, the inclined visor portion has a plurality of guide portions on its outer surface, and at least one of the plurality of guide portions has, in an attached state, a first guide surface that is inclined outward in the left-right direction of the vehicle body from the front to the rear of the vehicle body, or a second guide surface that is inclined upward or downward from the front to the rear of the vehicle body. The invention described in claim 3 is characterized in that, in the configuration of claim 1, the inclined visor portion has a plurality of guide portions on its outer surface, and the plurality of guide portions, when attached, have at least one first guide surface that is inclined outward in the left-right direction of the vehicle body from the front to the rear of the vehicle body, and at least one second guide surface that is inclined upward or downward from the front to the rear of the vehicle body. The invention as set forth in claim 4 is characterized in that in the configuration of claim 3, the first guide surface and the second guide surface are provided in one guide portion. [Effects of the Invention]

[0007] According to the invention of claim 1, the guide sections give arbitrary directionality to the traveling wind, and by directing the wind in a predetermined direction as guided wind with different directions along each guide section, the separated flow from the side visor can be dispersed and divided, and the vortex caused by the separated flow is also dispersed and divided. As a result, the dispersed and divided vortex is smaller than conventional vortex, and the negative pressure caused by the vortex is also reduced. Therefore, wind noise can be reduced. According to the invention of claim 2, 3 or 4, the running wind can be directed outward toward the outside of the vehicle body by the first guide surface, and upward toward the outside by the second guide surface. This allows separated air to be efficiently dispersed and divided, thereby further reducing wind noise. [Brief explanation of the drawings]

[0008] [Figure 1] 1A and 1B are explanatory views of a side visor of the present invention, in which (a) is a perspective view, (b) is an enlarged view of the vicinity of the front end, and (c) is an enlarged view showing the inside of the circular frame M1 in (b). [Figure 2] 1(b) is an explanatory diagram illustrating the dimensions of the side visor of the present invention, where (a) is an end view taken along line AA in FIG. 1(b), and (b) is an end view taken along line BB in FIG. 1(b). [Figure 3] An explanatory diagram showing the flow of wind around a side visor, where (a) is the flow on a conventional side visor, (b) is the flow on a side visor of the present invention, and (c) is the wind flow as seen from the CC line end face of (b). [Figure 4] 1A and 1B are explanatory views showing a first modified example of a side visor of the present invention, in which (a) is an enlarged view of the vicinity of the front end, and (b) shows the flow of wind on the side visor of the first modified example. [Figure 5] 10A and 10B are explanatory views showing a second modified example of the side visor of the present invention, in which (a) is a perspective view, (b) is an enlarged view of the vicinity of the front end, and (c) is an enlarged view showing the inside of the circular frame M2 of (b). [Figure 6] 5(b) is an explanatory diagram illustrating the dimensions of the side visor of the second modified example, where (a) is an end view taken along line DD in FIG. 5(b), and (b) is an end view taken along line EE in FIG. 5(b). [Figure 7]10A and 10B are explanatory diagrams showing the wind flow around the side visor of the second modified example, where (a) is the wind flow on the side visor of the second modified example, and (b) is the wind flow as seen from the FF line end surface of (a). [Figure 8] An explanatory diagram showing another form of the side visor of variant 3, where (a) is an enlarged view of the vicinity of the front end, (b) is the wind flow on the side visor of variant 3, and (c) is the wind flow as seen from the end surface of line GG in (b). DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram of a side visor of the present invention, where (a) is a perspective view, (b) is an enlarged view of the vicinity of the front end, and (c) is an enlarged view showing the inside of the circular frame M1 in (b). FIG. 2 is an explanatory diagram for explaining the dimensions of the side visor of the present invention, where (a) is an end view taken along line AA in FIG. 1(b), and (b) is an end view taken along line BB in FIG. 1(b). As shown in Figure 1(a), the side visor 1 is attached to a window frame 2 of the front door of an automobile V via an attachment means (not shown). The side visor 1 includes a long, strip-shaped flange 3 and a long, strip-shaped visor body 4 formed along the flange 3, and is formed with an inclined visor portion 5a that fits along the inclined portion on the front side of the window frame 2 and a horizontal visor portion 5b that fits along the horizontal portion on the rear side of the window frame 2.

[0010] As shown in Figure 1(b), the side visor 1 is provided with a guide portion 6 on the outer surface of the canopy body 4 of the inclined visor portion 5a, which is generally rectangular in side view and has a concave U-shaped cross section, extending towards the rear of the vehicle when attached to the window frame 2. The outer surface (bottom surface) of the guide portion 6 has a front edge that is flush with the boundary line between the flange portion 3 and the canopy body 4, and is flush with the outer surface of the canopy body 4 via a composite guide surface 9 described below. Three guide portions 6 are provided adjacent to each other at a predetermined interval in the vertical direction along the longitudinal direction in the inclination direction of the inclined visor portion 5a. The guide section 6 has a first guide surface 7 formed along its rear edge, which slopes outward in the left-right direction of the vehicle body from the front to the rear of the vehicle body to guide the wind as the vehicle moves outward. A second guide surface 8 is formed along the lower edge of the guide section 6, which slopes upward from the front to the rear of the vehicle body to guide the wind as the vehicle moves upward. The first guide surface 7 and the second guide surface 8 are connected via a broken line, and the first guide surface 7 located at the front of the vehicle body and the second guide surface 8 located at the rear of the first guide surface 7 form a combined guide surface 9.

[0011] The inclination angle θ1 of the first guide surface 7 shown in Figure 2(a) is set in the range of 90°≦θ1<180°, preferably 135°≦θ1<170°, based on a line L2 parallel to the center line connecting the front and rear of the vehicle body when attached to the window frame 2. 1(c) is set in the range of 1°≦α1<90°, preferably 5°≦α1≦45°, with respect to a line L1 parallel to the ground when attached to the window frame 2. The inclination angle α1-1 of the second guide surface 8 shown in FIG. 2(b) is set in the range of 90°≦α1-1≦135° with respect to the bottom surface of the concave guide portion 6. In addition, the recess width D1 between the bottom surface of the guide section 6 and the outer surface of the canopy body 4 shown in Figure 2(a) is set in the range of 1 mm ≦ D1 ≦ 100 mm, based on the bottom surface of the guide section 6 (here, parallel line L2), and is preferably set to 5 mm ≦ D1 ≦ 13 mm. When measuring the angle of the guide surface, the angle is measured based on a line connecting any two points on the guide surface. When the product surface (such as the bottom surface of the guide part) is used as the reference, the line connecting any two points on the reference surface is used as the reference. Furthermore, the inclination angle of each part may be set to the same value throughout the entire area of ​​each part within the respective setting range, or the set value may be changed.

[0012] Next, the flow of wind around the side visor 1 attached to the automobile V while the automobile V is moving will be described. FIG. 3 is an explanatory diagram showing the wind flow around the side visor, where (a) is the wind flow on a conventional side visor, (b) is the wind flow on the side visor of the present invention, and (c) is the wind flow as seen from the CC line end face of (b). As shown in Figure 3(a), the wind W generated by a vehicle equipped with a conventional side visor S flows uniformly over the outer surface of the visor body 4 and then uniformly separates from the side visor S. As a result, the vortex caused by the separated flow becomes larger, and the resulting negative pressure also increases, resulting in increased wind noise.

[0013] On the other hand, in a vehicle equipped with the side visor 1, the traveling wind W is guided as outward guided wind O and upward guided wind U by the composite guide surface 9 of the guide unit 6. That is, as shown in FIG. 3(c), the traveling wind W is guided toward the outside of the vehicle body as outward guided wind O by the first guide surface 7. Also, as shown in FIG. 3(b), the traveling wind is guided as upward guided wind U by the second guide surface 8. In this way, the traveling wind W is dispersed and divided by the guide unit 6 into outward guided wind O, upward guided wind U, and unguided traveling wind W. The outward guided wind O and upward guided wind U dispersed and divided from the traveling wind W have different flow directions and separation points from the unguided traveling wind W. Therefore, compared to the separated flow when the traveling wind W flows uniformly over the outer surface of the visor body 4, the separated flows from the outward guided wind O, upward guided wind U, and unguided traveling wind W become sparse and finer. Therefore, the vortices caused by the outward guided wind O, the upward guided wind U, and the separated flow from the unguided traveling wind W are smaller than the vortices that would be generated if the traveling wind W flowed uniformly over the outer surface of the canopy body 4. In other words, the negative pressure generated by the vortices caused by the separated flow is also smaller. This makes it possible to reduce wind noise. Furthermore, by providing the first guide surface 7 and the second guide surface 8 continuously as the combined guide surface 9, the outward guided wind O and the upward guided wind U become smooth guided winds, thereby effectively reducing wind noise.

[0014] The side visor 1 of the above form can be attached to the window frame 2 of the front door of an automobile V, and comprises a long, strip-shaped flange portion 3 attached to the window frame 2 via an attachment means, and a canopy body 4 formed in a long, strip-like shape along the flange portion 3, and is formed with an inclined visor portion 5a that follows the inclined portion on the front side of the window frame 2, and a horizontal visor portion 5b that follows the horizontal portion on the rear side of the window frame 2, and a concave guide portion 6 is provided on the outer surface of the inclined visor portion 5a to guide the traveling wind W upward and outward. According to the side visor 1 configured in this way, the guide section 6 gives the traveling wind W any directionality, directing it toward the outside and upward of the vehicle body as outward guide wind O and upward guide wind U in different directions, thereby dispersing and dividing the separated flow from the side visor 1, and thus dispersing and dividing the vortices caused by the separated flow. As a result, the dispersed and divided vortices are smaller than conventional vortices, and the negative pressure caused by the vortices is also reduced. Therefore, wind noise can be reduced.

[0015] The inclined visor portion 5 also has a plurality of guide portions 6 on its outer surface, and when attached, the plurality of guide portions 6 have a first guide surface 7 that slopes outward in the left-right direction of the vehicle body from the front to the rear, and a second guide surface 8 that slopes upward from the front to the rear of the vehicle body. Furthermore, the first guide surface 7 and the second guide surface 8 are provided in one guide section 6. Therefore, the running wind W can be divided into outward guided wind O directed toward the outside of the vehicle body by the first guide surface 7, upward guided wind U directed upward by the second guide surface 8, and unguided running wind W. This allows the separated flow to be efficiently dispersed and divided, thereby further reducing wind noise.

[0016] FIG. 4 is an explanatory diagram showing a first modified example of the side visor of the present invention, where (a) is an enlarged view of the vicinity of the front end, and (b) is an explanatory diagram showing the flow of wind. As shown in Figure 4(a), the side visor 1a is provided with a guide portion 6a, which is a strip-like shape extending toward the rear of the vehicle body and has a concave, U-shaped cross section, on the outer surface of the inclined visor portion 5a of the visor body 4 when attached to the window frame 2. A second guide surface 8 is provided along the lower edge of the guide portion 6a, extending to the rear (lower) edge of the visor body 4.

[0017] As shown in FIG. 4(b), the flow of wind around the side visor 1a configured as described above while driving is dispersed and divided into upward guided wind U guided largely upward by the second guide surface 8, guided wind U' guided upward by the bottom surface of the guide portion 6a that is strip-shaped in the front-to-rear direction, and unguided running wind W. As a result, vortices caused by separated flows become smaller, and the negative pressure generated by the vortices also becomes smaller. This makes it possible to reduce wind noise.

[0018] FIG. 5 is an explanatory diagram showing a modified example 2 of the side visor of the present invention, where (a) is a perspective view, (b) is an enlarged view of the vicinity of the front end, and (c) is an enlarged view showing the inside of the circular frame M2 of (b). 6A and 6B are explanatory diagrams illustrating the dimensions of the side visor of the second modified example, where (a) is an end view taken along line DD in FIG. 5B, and (b) is an end view taken along line EE in FIG. 5B. 5(a) and 5(b), the side visor 1b is provided on the outer surface of the inclined visor portion 5a with a convex guide portion 6b that is generally rectangular in side view and rectangular in vertical cross section and extends toward the rear of the vehicle body when attached to the window frame 2. Three guide portions 6b are provided adjacently at a predetermined interval in the vertical direction along the longitudinal direction in the inclination direction of the inclined visor portion 3a.

[0019] The width of the guide portion 6b's outward protrusion increases toward the rear, and the outer surface of the guide portion 6b functions as a first guide surface 7 that slopes outward in the left-right direction of the vehicle body from the front to the rear of the vehicle body to guide the traveling wind outward. Also, a second guide surface 8 that slopes upward from the front to the rear of the vehicle body is formed along the upper edge of the guide portion 6b to guide the traveling wind upward.

[0020] The inclination angle θ2 of the first guide surface 7 shown in Figure 6(a) is set in the range of 90°≦θ2<180°, preferably 135°≦θ2<170°, with respect to the parallel line L2 when attached to the window frame 2. 5(c) is set in the range of 1°≦α2<90°, preferably 5°≦α2≦45°, with respect to the parallel line L1 when attached to the window frame 2. The inclination angle α2-1 of the second guide surface 8 shown in FIG. 6(b) is set in the range of 90°≦α2-1≦135° with respect to the outer surface of the canopy body 4. Furthermore, the inclination angle θ2-1 of the rear end of the guide portion 6b shown in Fig. 6(a) is set in the range of 90°≦θ2-1≦135° with respect to the outer surface of the canopy body 4. The inclination angle α2-2 of the lower end of the guide portion 6b shown in Fig. 6(b) is set in the range of 90°≦α2-2≦135° with respect to the outer surface of the canopy body 4. The inclination angle of each part may be set to the same value throughout the entire area of ​​each part within the respective setting range, or the set value may be changed.

[0021] The width H of the guiding portion 6b shown in FIG. 6(b) is set to any value between the minimum width H1 and the maximum width H2 shown in FIG. 5(b). Here, the minimum width H1 refers to the width H at the position where the vertical width of the guiding portion 6b is smallest. The maximum width H2 refers to the width H at the position where the vertical width of the guiding portion 6b is largest. The minimum width H1 and the maximum width H2 are in the range of H1≦H2. On the other hand, the interval h between adjacent guiding portions 6b shown in FIG. 6(b) is set to any value between the minimum interval h1 and the maximum interval h2 shown in FIG. 5(b). Here, the minimum interval h1 refers to the interval h at the position where the vertical width between guiding portions 6b is smallest. The maximum interval h2 refers to the interval h at the position where the vertical width between guiding portions 6b is largest. The minimum interval h1 and the maximum interval h2 are set to a value between h1≦h2 ​​As shown in Figure 5(b), the width H of the guide portion 6b may be such that the width H on the front side is larger than the width H on the rear side when attached to the window frame 2, and the width H gradually decreases from the front to the rear, or the width H on the front side may be smaller than the width H on the rear side, and the width H gradually increases from the front to the rear. Similarly, the distance h between the guide portions 6b and 6b may be such that the distance h on the front side when attached to the window frame 2 is smaller than the distance h on the rear side, and the distance h gradually increases from the front to the rear, or the distance h on the front side may be larger than the distance h on the rear side, and the distance h gradually decreases from the front to the rear.

[0022] The protruding width D2 of the guide portion 6b shown in Figures 6(a) and (b) from the outer surface of the canopy body 4 (here, parallel line L2) is set in the range of 1 mm ≦ D2 ≦ 100 mm, and preferably set in the range of 5 mm ≦ D2 ≦ 13 mm. Further, the protruding width D2 satisfies the relationship D2a≦D2b between the lower protruding width D2a and the upper protruding width D2b of the guide portion 6b.

[0023] Next, the flow of wind around the side visor 1b attached to the automobile V while the automobile V is moving will be described. FIG. 7 is an explanatory diagram showing the wind flow around the side visor of the second modified example, where (a) shows the wind flow on the side visor of the first modified example, and (b) shows the wind flow as seen from the FF line end surface of (a). As shown in FIGS. 7(a) and 7(b), the traveling wind W of a vehicle equipped with side visors 1b is guided by the guide portion 6b as outward guide wind O and upward guide wind U. That is, as shown in FIG. 7(b), the traveling wind W is guided toward the outside of the vehicle body by the first guide surface 7 as outward guide wind O. Also, as shown in FIG. 7(a), the traveling wind is guided by the second guide surface 8 as upward guide wind U. In this way, the traveling wind W is dispersed and divided by the guide portion 6b into outward guide wind O, upward guide wind U, and unguided traveling wind W. This reduces vortices caused by separated flows and the negative pressure generated by the vortices. This reduces wind noise.

[0024] FIG. 8 is an explanatory diagram showing another form of the side visor of the modified example 3, where (a) is an enlarged view of the vicinity of the front end, (b) is the wind flow on the side visor of the modified example 3, and (c) is the wind flow as seen from the end surface of line GG in (b). As shown in Figure 8(a), the convex guide portion 6c formed on the side visor 1c extends to the rear (lower) edge of the visor body 4 when attached to the vehicle body. The width of the guide portion 6c protruding outward increases as it extends rearward, and the outer surface of the guide portion 6c functions as a first guide surface 7 that slopes outward in the left-right direction of the vehicle body from the front to the rear of the vehicle body to guide the traveling wind outward. In addition, a second guide surface 8 that slopes upward from the front to the rear of the vehicle body is formed along the upper edge of the guide portion 6c to guide the traveling wind upward.

[0025] As shown in FIG. 8(b), the flow of wind around the side visor 1c configured as described above while driving is such that the driving wind W is dispersed and divided into an outward guided wind O by the first guide surface 7, an upward guided wind U guided upward by the second guide surface 8, and an unguided driving wind W. This reduces the size of vortices caused by the separated flow, and also reduces the negative pressure generated by the vortices. This makes it possible to reduce wind noise.

[0026] The present invention has been described above based on the illustrated examples, and the technical scope thereof is not limited thereto. For example, the guide portion may be provided anywhere on the outer surface of the inclined visor portion, or may be provided over the entire outer surface of the inclined visor portion. However, it is preferable that the guide portion be provided below the middle of the inclined visor portion in the tilt direction (toward the front of the vehicle body). In addition, the number of guide parts to be installed may be one or more. When multiple guide parts are installed, they may be installed in series without any gaps between them, and the sizes of the guide parts may be different. The first guide surface and the second guide surface may be provided continuously or separately. If they are provided continuously, they may be continuous without a bent line, or may be shaped to slope outward from the front to the rear and also slope up and down. The second guide surface may be inclined downward from the front to the rear of the vehicle body when attached, in order to guide the traveling wind downward. The guide portion may be formed as a flat surface or a curved surface. The guide portion may be molded integrally with the side visor, or may be molded separately from the side visor and then fixed by a fixing means such as welding to be provided on the visor body. The guide portion may be either concave or convex, and when a plurality of guide portions are provided, they may be a combination of these. Furthermore, the shape of the guide portion may be polygonal, circular, fan-shaped, or the like in addition to a substantially rectangular shape in side view, as long as a guide surface is formed, and the recessed width (protruding width) may be uniform or non-uniform. Furthermore, in the case of a band-like shape as in Modification 1, the cross-sectional shape is not limited to an inverted U-shape (rectangular shape), but may be a V-shape (triangular shape), a U-shape (semicircular shape), or the like. Furthermore, when the guide portion is concave, a convex portion may be formed on the vehicle body side of the canopy body at a location corresponding to the guide portion when the canopy body is attached to the window frame.Similarly, when the guide portion is convex, a concave portion may be formed on the vehicle body side of the canopy body at a location corresponding to the guide portion. [Explanation of symbols]

[0027] 1,1a,1b,1c··Side visor, 2··Window frame, 3··Brim portion, 4··Eaves body, 5a··Inclined visor portion, 5b··Horizontal visor portion, 6,6a,6b,6c··Guidance portion, 7··First guide surface, 8··Second guide surface, V··Automobile.

Claims

1. A side visor that can be attached to a window frame of a front door of an automobile, and that includes a long, band-like flange that is attached to the window frame via an attachment means, and a long, band-like visor body that is formed along the flange, and that is formed with an inclined visor portion that follows a front inclined portion of the window frame, and a horizontal visor portion that follows a rear horizontal portion of the window frame, A convex guide portion for guiding traveling wind in different directions is provided on the outer surface of the inclined visor portion so as to be aligned in a row along the longitudinal direction of the inclined visor portion, either integrally or separately, A side visor characterized in that two of the multiple guide sections that are adjacent to each other in the longitudinal direction are arranged so that, when attached to the window frame, the upper end of the lower guide section is positioned lower than the lower end of the upper guide section.

2. 2. The side visor according to claim 1, wherein at least one of the plurality of guide portions has, in the attached state, a first guide surface that slopes outward in the left-right direction of the vehicle body from the front to the rear of the vehicle body, or a second guide surface that slopes upward or downward from the front to the rear of the vehicle body.

3. 2. The side visor according to claim 1, wherein, in the attached state, at least one of the plurality of guide portions has a first guide surface that slopes outward in the left-right direction of the vehicle body from the front to the rear of the vehicle body, and at least one has a second guide surface that slopes upward or downward from the front to the rear of the vehicle body.

4. The side visor according to claim 3, wherein the first guide surface and the second guide surface are provided on one guide portion.

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