Vehicle front pillar

Abstract

To provide a vehicle front pillar that can suppress wind noise caused by driving without increasing the width. [Solution] The front pillar 11 of the vehicle has an outer surface 13 that comes into contact with the airflow when the airflow hitting the windshield 12 flows to the side of the vehicle. The front pillar 11 comprises a frame 14 that supports the windshield 12, and a garnish member 15 attached to the frame 14 so as to cover the front and sides of the frame 14. The outer surface of the front pillar 11 is formed by the garnish member 15. The garnish member 15 comprises a rain gutter 19 that contacts the edge of the surface of the windshield 12, and a pillar garnish 20 that extends from the rain gutter 19 toward the side of the vehicle. An inclined surface 23 is formed on the outer surface 22 of the rain gutter 19. Numerous protrusions 24 are formed on the inclined surface 23 so as to be arranged in a dot pattern.

Description

Technical Field

[0001] The present disclosure relates to a front pillar of a vehicle.

Background Art

[0002] The front pillar of a vehicle shown in Patent Document 1 supports the windshield of the vehicle and has an outer surface that contacts the traveling wind when the traveling wind hitting the windshield flows to the side of the vehicle. The outer surface of the front pillar is curved from the front side to the side of the vehicle.

[0003] When the traveling wind flows from the front side to the side of the vehicle on the outer surface of the front pillar, friction occurs due to the viscosity of the air near the outer surface, so the flow of the air slows down as it goes downstream. When the pressure becomes higher downstream than upstream of this air flow, the air flowing near the outer surface of the front pillar flows backward. Such a reverse flow causes the traveling wind to peel off from the outer surface of the front pillar. And a wind noise occurs along with the peeling of the traveling wind from the outer surface.

[0004] In order to suppress the above wind noise, it is conceivable to prevent the air flow near the outer surface of the front pillar from slowing down when the traveling wind flows from the front side to the side of the vehicle on the outer surface of the front pillar. For example, if the width of the front pillar is increased so that the curvature of the outer surface becomes gentler, the air flow near the outer surface of the front pillar is suppressed from slowing down. As a result, the traveling wind is less likely to peel off from the outer surface of the front pillar, so the wind noise associated with the peeling can be suppressed.

Prior Art Documents

Patent Documents

[0005]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] However, increasing the width of the front pillar in order to suppress the separation of airflow from the outer surface of the front pillar worsens visibility from inside the vehicle, or in other words, reduces visibility performance. [Means for solving the problem]

[0007] Next, we will describe various configurations of the front pillar of a vehicle that solve the above problem. (Aspect 1) A front pillar of a vehicle that supports the windshield of a vehicle, comprising an outer surface that comes into contact with the airflow when the airflow strikes the windshield and flows to the side of the vehicle, wherein the outer surface is curved from the front side of the vehicle to the side side, and on the front side of the outer surface, at least one of the convex portion and the concave portion is formed to be arranged in a dot pattern.

[0008] According to the above configuration, the airflow hitting the windshield flows from the front to the side of the vehicle while in contact with the outer surface of the front pillar. At this time, the airflow near the outer surface of the front pillar is disturbed by the dot-like convex or concave parts arranged on the front side of the outer surface of the front pillar, causing it to move away from and approach the outer surface. As a result, momentum is supplied to the air near the outer surface and the pressure increases, so that the slowing of the airflow near the outer surface can be suppressed without increasing the width of the front pillar or reducing the curvature of the outer surface. As a result, the pressure becomes higher downstream than upstream in the airflow near the outer surface, which suppresses backflow in the airflow and prevents the airflow from separating from the outer surface. This also suppresses the generation of wind noise that occurs when the airflow separates from the outer surface.

[0009] (Aspect 2) A front pillar of a vehicle according to (Aspect 1), comprising a frame that supports the windshield, and a garnish member attached to the frame so as to cover the front and side surfaces of the frame, wherein the outer surface is formed by the garnish member.

[0010] According to the above configuration, the front pillar can be formed by manufacturing the frame and the garnish member separately, and then attaching the garnish member to the frame. Therefore, by forming protrusions and recesses in the garnish member during its manufacture, a front pillar having at least one of the protrusions and recesses can be formed when the garnish member is attached to the frame. Thus, the formation of a front pillar having at least one of the protrusions and recesses becomes easier.

[0011] (Aspect 3) The garnish member comprises a rain gutter that contacts the edge of the surface of the windshield, and a pillar garnish that extends from the rain gutter toward the side of the vehicle, wherein the rain gutter has an inclined surface that is inclined such that the distance from the surface of the windshield increases as it approaches the pillar garnish, and at least one of the recess and the protrusion is formed on the inclined surface (the front pillar of the vehicle according to Embodiment 2).

[0012] According to the above configuration, the rain gutter is positioned to be in contact with the edge of the windshield's surface. Therefore, when the airflow hitting the windshield flows from the front to the side of the vehicle, it quickly hits the inclined surface of the rain gutter where the convex and concave parts are formed. Furthermore, the inclined surface of the rain gutter is sloped such that the distance from the windshield surface increases as it approaches the pillar garnish. Therefore, when the airflow hitting the windshield flows from the front to the side of the vehicle, it is more likely to hit the inclined surface of the rain gutter. Consequently, the air hits the inclined surface of the rain gutter early, and is more likely to hit the convex and concave parts formed on that inclined surface. As a result, when the airflow hitting the windshield flows from the front to the side of the vehicle, the airflow is disturbed early, moving away from and closer to the outer surface of the front pillar, and such disturbances are more likely to occur.

[0013] (Aspect 4) The front pillar of a vehicle according to any one of (Aspect 1) to (Aspect 3), wherein the protrusions or recesses are formed on the outer surface in a dot-like pattern, and the height of the protrusions or the depth of the recesses is 0.2 mm or more and 0.8 mm or less.

[0014] According to the above configuration, the height of the protrusions or the depth of the recesses on the inclined surface is set to 0.2 mm or more and 0.8 mm or less. Therefore, when the airflow hitting the windshield flows from the front to the side of the vehicle while in contact with the outer surface of the front pillar, the airflow is easily disturbed, moving away from and approaching the outer surface. It is preferable that the height of the protrusions or the depth of the recesses on the inclined surface be within the range of 0.25 mm or more and 0.75 mm or less, and more preferably 0.5 mm.

[0015] (Appendix 5) The front pillar of a vehicle according to any one of (Aspect 1) to (Aspect 4), wherein the protrusions or recesses are formed on the outer surface in a dot-like pattern, and the width of the protrusions or recesses is 0.2 mm or more and 1.0 mm or less.

[0016] According to the above configuration, the width of the convex or concave portion on the inclined surface is 0.2 mm or more and 1.0 mm or less. Therefore, when the airflow hitting the windshield flows from the front to the side of the vehicle while in contact with the outer surface of the front pillar, the airflow is easily disturbed, moving away from and approaching the outer surface. It is preferable that the width of the convex or concave portion on the inclined surface be within the range of 0.4 mm or more and 0.6 mm or less, and more preferably 0.5 mm.

[0017] (Aspect 6) The front pillar of a vehicle according to any one of (Aspect 1) to (Aspect 5), wherein the protrusions or recesses are formed on the outer surface in a dot-like pattern, and the spacing between the protrusions or recesses is 0.5 mm or more and 3.0 mm or less.

[0018] According to the above configuration, the distance between the convex or concave portions on the inclined surface is 0.5 mm or more and 3.0 mm or less. Therefore, when the airflow hitting the windshield flows from the front to the side of the vehicle while in contact with the outer surface of the front pillar, the airflow is easily disturbed, moving away from and closer to the outer surface. It is preferable that the distance between the convex or concave portions on the inclined surface be within the range of 1.3 mm or more and 1.7 mm or less, and more preferably 1.5 mm.

[0019] (Aspect 7) The front pillar of a vehicle according to Embodiment 3, wherein the portion of the rain gutter where the inclined surface is formed, the end on the pillar garnish side and the end opposite to that end are chamfered in an arc shape so as to connect with the inclined surface, and when L1 is the tangent to the edge of the surface of the windshield, and L2 is the tangent to the respective boundaries between the chamfered portions at the two ends of the rain gutter and the inclined surface, the inclination angle θ1 between tangent L1 and tangent L2 is 10° or more and 20° or less.

[0020] According to the above configuration, the inclination angle θ1 between the tangent line L1 and the tangent line L2 is set to be 10° or more and 20° or less. If this inclination angle θ1 is made too small, when the traveling wind hitting the windshield flows from the front side to the side of the vehicle, it becomes difficult to hit the inclined surface of the rain gutter. Also, if the inclination angle θ1 is made too large, when the traveling wind hitting the windshield flows from the front side to the side of the vehicle, the inclined surface of the rain gutter becomes a resistance to the air flow. By setting the inclination angle θ1 to be 10° or more and 20° or less, it is possible to make the traveling wind easily hit the inclined surface of the rain gutter and make it less likely for the inclined surface to become a resistance to the air flow. Note that the inclination angle θ1 is preferably a value within the range of 13° or more and 17° or less, and more preferably 15°.

[0021] (Aspect 8) At the portion of the rain gutter where the inclined surface is formed, the end on the pillar garnish side and the end on the opposite side thereof are chamfered in an arc shape so as to be continuous with the inclined surface. When the tangent line to each boundary between the chamfered portions at the two ends of the rain gutter and the inclined surface is defined as L2, and the end on the rain gutter side of the pillar garnish is chamfered in an arc shape so as to be continuous with the surface of the pillar garnish, and the tangent line to the boundary between the chamfered portion and the surface at the end of the pillar garnish is defined as L3, the inclination angle θ2 between the tangent line L2 and the tangent line L3 is set to be 10° or more and 20° or less. The front pillar of the vehicle according to (Aspect 3) or (Aspect 7).

[0022] According to the above configuration, the inclination angle θ2 between the tangent line L2 and the tangent line L3 is set to be 10° or more and 20° or less. If this inclination angle θ2 is made too small, when the surface of the pillar garnish is curved from the front side to the side of the vehicle, the curvature has to be increased. As a result, the air flowing along the surface of the pillar garnish is likely to peel off from the above surface. Further, if the inclination angle θ2 is made too large, since the outer surface of the front pillar bends greatly from the inclined surface of the rain gutter to the surface of the pillar garnish, the air flowing along the outer surface is likely to peel off from the outer surface. By setting the inclination angle θ2 to be 10° or more and 20° or less, the air flowing along the outer surface of the front pillar is less likely to peel off from the outer surface and the surface of the pillar garnish. Incidentally, the inclination angle θ2 is preferably a value within the range of 13° or more and 17° or less, and more preferably 15°.

Brief Description of the Drawings

[0023] [Figure 1] It is a perspective view showing a vehicle and its front pillar. [Figure 2] It is a cross-sectional view showing the state of the front pillar of FIG. 1 as viewed from the direction of arrow II-II. [Figure 3] It is a cross-sectional view showing an enlarged view of the portion surrounded by the broken line in the rain gutter of the front pillar of FIG. 2. [Figure 4] It is a plan view showing the state of the inclined surface of the rain gutter of FIG. 3 as viewed from above. [Figure 5] It is a cross-sectional view showing another example of the shape of the inclined surface of the rain gutter of FIG. 3.

Embodiments for Carrying out the Invention

[0024] Hereinafter, an embodiment of the front pillar of a vehicle will be described with reference to FIGS. 1 to 4. As shown in Figure 1, the vehicle comprises front pillars 11 provided on both sides in the width direction at the front of the vehicle, and a windshield 12 supported by these front pillars 11. The front pillars 11 have outer surfaces 13 that come into contact with the airflow as it flows along the sides of the vehicle after hitting the windshield 12. The outer surfaces 13 of the front pillars 11 are curved from the front side to the side side of the vehicle.

[0025] <Configuration of Front Pillar 11> As shown in Figure 2, the front pillar 11 includes a skeletal section 14 that supports the windshield 12. The skeletal section 14 comprises a first pillar reinforcement 16, a second pillar reinforcement 17, and an inner panel 18. The first pillar reinforcement 16, the second pillar reinforcement 17, and the inner panel 18 are formed by press-forming metal sheets. The skeletal section 14, which forms the framework of the front pillar 11, is formed by welding these first pillar reinforcement 16, second pillar reinforcement 17, and inner panel 18 to each other.

[0026] The front pillar 11 is equipped with a garnish member 15 attached to the frame 14 so as to cover the front and sides of the frame 14. The outer surface 13 of the front pillar 11 is formed by the garnish member 15. The garnish member 15 includes a rain gutter 19 that contacts the edge of the surface of the windshield 12, and a pillar garnish 20 that extends from the rain gutter 19 toward the side of the vehicle.

[0027] The rain gutter 19 is designed to prevent water droplets adhering to the surface of the windshield 12 from entering the space between the edge of the windshield 12's surface and the frame 14. This rain gutter 19 is located on the front side of the vehicle among the garnish members 15 that form the outer surface 13 of the front pillar 11.

[0028] The rain gutter 19 comprises a contact portion 21 that contacts the edge of the surface of the windshield 12, and an outer surface portion 22 that protrudes from the contact portion 21 and is positioned at a distance from the edge of the surface of the windshield 12. An inclined surface 23 is formed on the surface of the outer surface portion 22. The inclined surface 23 is inclined such that the distance from the surface of the windshield 12 increases as it approaches the pillar garnish 20. Numerous protrusions 24 are formed on the inclined surface 23 as shown in Figures 3 and 4. That is, the numerous protrusions 24 are formed to be arranged in a dot pattern. The height h1 of the protrusions 24 is, for example, 0.2 mm or more and 0.8 mm or less. The width W1 of the protrusions 24 is, for example, 0.2 mm or more and 1.0 mm or less. The spacing K1 between the protrusions 24 is, for example, 0.5 mm or more and 3.0 mm or less.

[0029] Furthermore, the rain gutter 19 and pillar garnish 20 are formed such that the inclination angles θ1 and θ2 shown in Figure 2 are predetermined values. The inclination angle θ1 is the angle between tangents L1 and L2. Tangent L1 is the tangent to the edge of the surface of the windshield 12. Tangent L2 is defined as follows: The outer surface portion 22 of the rain gutter 19, where the inclined surface 23 is formed, has an end on the pillar garnish 20 side and the end on the opposite side that is chamfered in an arc shape so as to connect with the inclined surface 23. Tangent L2 is the tangent to the respective boundaries between the chamfered portions at the two ends of the outer surface portion 22 of the rain gutter 19 and the inclined surface 23. The inclination angle θ1 between tangents L1 and L2 is, for example, set to be 10° or more and 20° or less.

[0030] The inclination angle θ2 is the angle between tangents L2 and L3. The outer surface portion 22 of the rain gutter 19, where the inclined surface 23 is formed, and the end opposite to the pillar garnish 20, is chamfered in an arc shape so as to connect with the inclined surface 23. Tangent L3 is the tangent to the boundary between the chamfered portion of the end of the pillar garnish 20 and the surface of the pillar garnish 20. The inclination angle θ2 between tangents L2 and L3 is, for example, set to be 10° or more and 20° or less.

[0031] <Effects of Front Pillar 11> (1) The airflow hitting the windshield 12 flows from the front to the side of the vehicle, while in contact with the outer surface 13 of the front pillar 11. At this time, friction occurs near the outer surface 13 of the front pillar 11 due to the viscosity of the air, so the airflow slows down as it moves downstream. When the pressure is higher downstream than upstream in this airflow, the air flowing near the outer surface 13 of the front pillar 11 flows in reverse. This reverse flow causes separation of the airflow from the outer surface 13 of the front pillar 11. Wind noise is generated along with the separation of the airflow from the outer surface 13. In particular, the occurrence of such wind noise becomes noticeable when the vehicle speed is 100 km / h or more.

[0032] To suppress the wind noise mentioned above, one approach is to ensure that the airflow around the outer surface 13 of the front pillar 11 does not slow down when the airflow flows from the front to the side of the vehicle. For example, increasing the width of the front pillar 11 so that the curvature of the outer surface 13 becomes gentler would suppress the slowing down of the airflow around the outer surface 13 of the front pillar 11. However, increasing the width of the front pillar 11 worsens visibility from inside the vehicle, or in other words, reduces visibility performance.

[0033] To address these issues and suppress the wind noise mentioned above, numerous protrusions 24 are formed on the front side of the vehicle's outer surface 13 of the front pillar 11, arranged in a dot pattern. In this case, when the airflow hitting the windshield 12 flows from the front to the side of the vehicle while in contact with the outer surface 13 of the front pillar 11, the airflow near the outer surface 13 is disturbed by the protrusions 24, causing it to move away from and approach the outer surface 13. As a result, momentum is supplied to the air near the outer surface 13, increasing its pressure. This prevents the airflow near the outer surface 13 from slowing down, even without increasing the width of the front pillar 11 and reducing the curvature of the outer surface 13. Consequently, the pressure becomes higher downstream of the airflow near the outer surface 13 than upstream, preventing backflow and separation of the airflow from the outer surface 13. This also suppresses the generation of wind noise associated with the separation of the airflow from the outer surface 13.

[0034] (2) The front pillar 11 comprises a frame 14 that supports the windshield 12, and a garnish member 15 attached to the frame 14 so as to cover the front and sides of the frame 14. The outer surface 13 of the front pillar 11 is formed by the garnish member 15.

[0035] With this configuration, the front pillar 11 can be formed by manufacturing the frame 14 and the garnish member 15 separately, and then attaching the garnish member 15 to the frame 14. Therefore, by forming a number of protrusions 24 on the garnish member 15 during its manufacture, a front pillar 11 having a number of protrusions 24 can be formed when the garnish member 15 is attached to the frame 14. Thus, the formation of a front pillar 11 having a number of protrusions 24 becomes easier.

[0036] (3) The garnish member 15 includes a rain gutter 19 that contacts the edge of the surface of the windshield 12, and a pillar garnish 20 that extends from the rain gutter 19 toward the side of the vehicle. Therefore, when the airflow hitting the windshield 12 flows from the front of the vehicle toward the side, it quickly hits the inclined surface 23 on the rain gutter 19 where numerous protrusions 24 are formed.

[0037] Furthermore, the inclined surface 23 of the rain gutter 19 is sloped such that the distance from the surface of the windshield 12 increases as it approaches the pillar garnish 20. As a result, when the airflow hitting the windshield 12 flows from the front to the side of the vehicle, it is more likely to hit the inclined surface 23 of the rain gutter 19.

[0038] Consequently, air hits the inclined surface 23 of the rain gutter 19 earlier, and air is more likely to hit the numerous protrusions 24 formed on the inclined surface 23. As a result, when the airflow hitting the windshield 12 flows from the front to the side of the vehicle, the airflow is disturbed earlier, moving away from and closer to the outer surface 13 of the front pillar 11, and such disturbances are more likely to occur.

[0039] (4) The height h1 of the numerous protrusions 24 formed on the inclined surface 23 is set to be 0.2 mm or more and 0.8 mm or less. As a result, when the airflow hitting the windshield 12 flows from the front to the side of the vehicle while in contact with the outer surface 13 of the front pillar 11, the airflow is more likely to become turbulent, moving away from and approaching the outer surface 13. It is preferable that the height h1 of the numerous protrusions 24 on the inclined surface 23 be within the range of 0.25 mm or more and 0.75 mm or less, and more preferably 0.5 mm.

[0040] (5) The width W1 of the numerous protrusions 24 formed on the inclined surface 23 is, for example, 0.2 mm or more and 1.0 mm or less. Therefore, when the airflow hitting the windshield 12 flows from the front to the side of the vehicle while in contact with the outer surface 13 of the front pillar 11, the airflow is easily disturbed, moving away from and closer to the outer surface 13. The width W1 of the numerous protrusions 24 on the inclined surface 23 is preferably in the range of 0.4 mm or more and 0.6 mm or less, and more preferably 0.5 mm.

[0041] (6) The spacing K1 between the protrusions 24 is, for example, 0.5 mm or more and 3.0 mm or less. As a result, when the airflow hitting the windshield 12 flows from the front to the side of the vehicle while in contact with the outer surface 13 of the front pillar 11, the airflow is more likely to become turbulent, moving away from and closer to the outer surface 13. The spacing K1 between the numerous protrusions 24 on the inclined surface 23 is preferably within the range of 1.3 mm or more and 1.7 mm or less, and more preferably 1.5 mm.

[0042] (7) The rain gutter 19 has an inclination angle θ1 between tangents L1 and L2 shown in Figure 2 that is 10° or more and 20° or less. If this inclination angle θ1 is too small, the airflow hitting the windshield 12 will have difficulty hitting the inclined surface 23 of the rain gutter 19 when it flows from the front to the side of the vehicle. Conversely, if the inclination angle θ1 is too large, the inclined surface 23 of the rain gutter 19 will act as resistance to the airflow when the airflow hitting the windshield 12 flows from the front to the side of the vehicle. As described above, by setting the inclination angle θ1 to 10° or more and 20° or less, the airflow will be able to easily hit the inclined surface 23 of the rain gutter 19, and the inclined surface will have less resistance to the airflow. It is preferable that the inclination angle θ1 be within the range of 13° or more and 17° or less, and more preferably 15°.

[0043] (8) The inclination angle θ2 between the tangents L2 and L3 shown in Figure 2 of the pillar garnish 20 is set to be 10° or more and 20° or less. If this inclination angle θ2 is made too small, the curvature of the surface of the pillar garnish 20 must be made larger when curving it from the front side to the side side of the vehicle. As a result, the air flowing along the surface of the pillar garnish 20 will be more likely to separate from the surface. Also, if the inclination angle θ2 is made too large, the outer surface 13 of the front pillar 11 will bend significantly from the inclined surface 23 of the rain gutter 19 to the surface of the pillar garnish 20, so the air flowing along the outer surface 13 will be more likely to separate from the outer surface 13. As described above, by setting the inclination angle θ2 to be 10° or more and 20° or less, the air flowing along the outer surface 13 of the front pillar 11 will be less likely to separate from the outer surface 13 and the surface of the pillar garnish 20. Furthermore, the inclination angle θ2 is preferably within the range of 13° or more and 17° or less, and more preferably 15°.

[0044] The above embodiment can also be modified as follows, for example. The above embodiment and the following modifications can be combined and implemented to the extent that they do not contradict each other technically. Instead of forming numerous protrusions 24 in a dot pattern on the inclined surface 23 of the outer surface portion 22 of the rain gutter 19, a number of recesses 25 may be formed on the inclined surface 23 in a dot pattern, as shown in Figure 5. In this case, the depth h2, width W2, and spacing K2 of the numerous recesses 25 can be set as follows.

[0045] The depth h2 of the recess 25 is, for example, 0.2 mm or more and 0.8 mm or less. Preferably, the depth h2 of the recess 25 is within the range of 0.25 mm or more and 0.75 mm or less, and more preferably 0.5 mm.

[0046] The width W2 of the recess 25 is, for example, 0.2 mm or more and 1.0 mm or less. Preferably, the width W2 of the recess 25 is within the range of 0.4 mm or more and 0.6 mm or less, and more preferably 0.5 mm.

[0047] The spacing K2 between the recesses 25 is, for example, 0.5 mm or more and 3.0 mm or less. Preferably, the spacing K2 between the recesses 25 is within the range of 1.3 mm or more and 1.7 mm or less, and more preferably 1.5 mm.

[0048] The inclined surface 23 may be formed with a mixture of the protrusions 24 and the recesses 25. In this case, the height h1 of the protrusions 24 and the depth h2 of the recesses 25 may be, for example, half of the values ​​described above.

[0049] The garnish member 15 may be an integrated unit of the rain gutter 19 and the pillar garnish 20. The pillar garnish 20 may be fixed to the frame 14 by welding or the like.

[0050] The front pillar 11 may be an integral part of the frame 14 and the garnish member 15. [Explanation of Symbols]

[0051] 11…Front pillar 12…Windshield 13...Outer surface 14…Skeletal part 15... Garnish component 16…First pillar reinforcement 17…Second pillar reinforcement 18…Inner panel 19... Rain Gutter 20... Pillar garnish 21... Contact area 22…Outer surface part 23…Slope surface 24…Convex part 25…recess

Claims

1. A front pillar that supports the vehicle's windshield, The windshield has an outer surface that comes into contact with the airflow as the airflow hits it and flows along the side of the vehicle, The aforementioned outer surface is curved from the front side to the side side of the vehicle. The front pillar of a vehicle is formed on the front side of its outer surface such that at least one of the convex portions and concave portions is arranged in a dot pattern.

2. The windshield comprises a frame that supports the windshield, and a garnish member attached to the frame so as to cover the front and sides of the frame. The front pillar of a vehicle according to claim 1, wherein the outer surface is formed by the garnish member.

3. The garnish member comprises a rain gutter that contacts the edge of the surface of the windshield, and a pillar garnish that extends from the rain gutter toward the side of the vehicle. The rain gutter has an inclined surface that slopes such that the distance from the surface of the windshield increases as it approaches the pillar garnish. The front pillar of a vehicle according to claim 2, wherein at least one of the recess and the protrusion is formed on the inclined surface.

4. The outer surface is formed such that the protrusions or recesses are arranged in a dot pattern. The front pillar of a vehicle according to any one of claims 1 to 3, wherein the height of the protrusion or the depth of the recess is 0.2 mm or more and 0.8 mm or less.

5. The outer surface is formed such that the protrusions or recesses are arranged in a dot pattern. The front pillar of a vehicle according to any one of claims 1 to 3, wherein the width of the protrusion or recess is 0.2 mm or more and 1.0 mm or less.

6. The outer surface is formed such that the protrusions or recesses are arranged in a dot pattern. The front pillar of a vehicle according to any one of claims 1 to 3, wherein the distance between the convex portion or the concave portion is 0.5 mm or more and 3.0 mm or less.

7. In the rain gutter, the portion where the inclined surface is formed, the end on the pillar garnish side and the end on the opposite side are chamfered in an arc shape so as to connect with the inclined surface. Let L1 be the tangent to the edge of the surface of the windshield, and L2 be the tangent to the respective boundaries between the chamfered portions at the two ends of the rain gutter and the inclined surface, The front pillar of a vehicle according to claim 3, wherein the angle of inclination θ1 between tangents L1 and L2 is 10° or more and 20° or less.

8. In the rain gutter, the portion where the inclined surface is formed, the end on the pillar garnish side and the end on the opposite side are chamfered in an arc shape so as to connect with the inclined surface. Let L2 be the tangent to the respective boundary between the chamfered portions at the two ends of the rain gutter and the inclined surface. The end of the pillar garnish on the rain gutter side is chamfered in an arc shape so as to connect with the surface of the pillar garnish. When L3 is defined as the tangent line to the boundary between the chamfered portion at the end of the pillar garnish and the surface, The front pillar of a vehicle according to claim 3, wherein the angle of inclination θ2 between the tangent line L2 and the tangent line L3 is 10° or more and 20° or less.

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