Front pillar of vehicle

Abstract

The invention provides a front pillar of a vehicle. The front pillar of the vehicle is provided with an outer surface which is configured so as to come into contact with the traveling wind when the traveling wind blown onto the windshield flows toward the side surface of the vehicle. The outer surface is bent from the front side to the side surface of the vehicle, and at least one of convex parts and concave parts is formed on the outer surface of the front side of the vehicle in a point arrangement mode.

Description

Technical Field

[0001] This disclosure relates to a front pillar of a vehicle. Background Technology

[0002] The front pillar of a vehicle shown in Japanese Utility Model Registration No. 3218948 is a component that supports the windshield of the vehicle and has an outer surface that contacts the driving wind blowing onto the windshield when it flows to the side of the vehicle. The outer surface of the front pillar curves from the front side of the vehicle to the side side.

[0003] As the airflow travels from the front side of the vehicle to the side side along the outer surface of the pillar, friction occurs near the outer surface due to air viscosity, causing the airflow to slow down as it moves downstream. Because the pressure is higher downstream compared to upstream, the airflow near the outer surface of the pillar experiences a backflow. This backflow causes the airflow to be stripped from the outer surface of the pillar. Furthermore, wind noise is generated as the airflow is stripped from the outer surface.

[0004] To suppress the aforementioned wind noise, consider the following scenario: when the driving wind flows from the front side of the vehicle to the side side of the outer surface of the front pillar, the airflow near the outer surface of the front pillar should not be slowed down. For example, if the width of the front pillar is increased in a way that reduces the curvature of the outer surface, the slowing down of the airflow near the outer surface of the front pillar can be suppressed. As a result, since it is less likely for the driving wind to detach from the outer surface of the front pillar, the wind noise accompanying this detachment can be suppressed. Summary of the Invention

[0005] However, if the width of the front pillar is increased in order to suppress the stripping of driving wind from the outer surface of the front pillar, the visibility from inside the vehicle will deteriorate; in other words, the visibility performance will be reduced.

[0006] Next, various methods for solving the aforementioned problems regarding the front pillar of a vehicle will be described. The first method disclosed herein involves a front pillar that supports the windshield of a vehicle and has an outer surface configured to contact the driving wind as it flows laterally onto the windshield. The outer surface curves from the front side of the vehicle to the side side, and at least one of protrusions and recesses is formed on the front side of the outer surface in a dotted arrangement.

[0007] According to the above structure, the airflow blowing onto the windshield flows from the front side of the vehicle toward the side while contacting the outer surface of the pillar. At this time, the airflow near the outer surface of the pillar is disturbed by the protrusions or recesses on the outer surface of the pillar, which are arranged in a dotted pattern on the front side of the vehicle, causing the airflow to move away from and towards the outer surface at different times. As a result, since momentum is supplied to the air near the outer surface, the pressure increases, thus suppressing the slowing of airflow near the outer surface even without increasing the width of the pillar to reduce the curvature of the outer surface. Consequently, the situation where the pressure near the outer surface increases downstream of the airflow, causing a backflow and resulting in the airflow being stripped from the outer surface, is suppressed. Furthermore, the wind noise generated by the stripping of the airflow from the outer surface is also suppressed.

[0008] In the front pillar of the first aspect of this disclosure, it may also be adopted in the following manner, namely, including: a frame portion that supports the windshield; and a decorative component that is mounted on the frame portion in such a way as to cover the front and sides of the frame portion, the outer surface of which is formed by the decorative component.

[0009] According to the above structure, after the frame part and the decorative part are manufactured separately, the front pillar can be formed by installing the decorative part onto the frame part. Therefore, by forming a protrusion or a recess on the decorative part in advance during the manufacturing of the decorative part, a front pillar having at least one of the protrusion and recess can be formed when the decorative part is installed onto the frame part. Therefore, the formation of a front pillar having at least one of the protrusion and recess becomes easier.

[0010] In the front pillar according to the first aspect of this disclosure, the following approach can also be adopted: the decorative component has a rain gutter and a pillar trim, the rain gutter is connected to the edge of the surface of the windshield, the pillar trim extends from the rain gutter toward the side of the vehicle, the rain gutter has an inclined surface that is inclined such that the distance relative to the surface of the windshield increases as it gets closer to the pillar trim, and at least one of the recess and the protrusion is formed on the inclined surface.

[0011] According to the above structure, the rain gutters are configured to connect with the edge of the windshield surface. Therefore, when the wind blowing onto the windshield flows from the front side of the vehicle towards the side, it is blown onto the sloping surface of the rain gutters, where protrusions or recesses are formed, ahead of time. Furthermore, the sloping surface of the rain gutters is inclined such that the distance relative to the windshield surface increases as it approaches the pillar trim. Therefore, when the wind blowing onto the windshield flows from the front side of the vehicle towards the side, it is easily blown onto the sloping surface of the rain gutters. Consequently, air is blown onto the sloping surface of the rain gutters ahead of time, and air is easily blown onto the protrusions or recesses formed on this sloping surface. As a result, when the wind blowing onto the windshield flows from the front side of the vehicle towards the side, the airflow is disturbed ahead of time relative to the outer surface of the pillar, sometimes moving away and sometimes closer, and such disturbance is easily generated.

[0012] In the front pillar of the first aspect of this disclosure, the protrusions or recesses are formed on the outer surface in a dotted configuration, wherein the height of the protrusions or the depth of the recesses is set to be more than 0.2 mm and less than 0.8 mm.

[0013] According to the above structure, the height of the protrusion or the depth of the recess in the inclined surface is set to be 0.2 mm or more and 0.8 mm or less. Therefore, when the driving wind blowing onto the windshield flows from the front side of the vehicle to the side side while contacting the outer surface of the front pillar, the airflow is easily disturbed in a manner that is sometimes away from and sometimes closer to the aforementioned outer surface. In addition, the height of the protrusion or the depth of the recess in the inclined surface is preferably set to a value in the range of 0.25 mm or more and 0.75 mm or less, and more preferably 0.5 mm.

[0014] In the front pillar of the first aspect of this disclosure, the protrusions or recesses may also be formed on the outer surface in a dotted configuration, wherein the width of the protrusions or recesses is set to be more than 0.2 mm and less than 1.0 mm.

[0015] According to the above structure, the width of the protrusion or concave portion in the inclined surface is set to be 0.2 mm or more and 1.0 mm or less. Therefore, when the driving wind blowing onto the windshield flows from the front side of the vehicle towards the side while contacting the outer surface of the front pillar, the airflow is easily disturbed in a manner that is sometimes moving away from and sometimes moving closer to the aforementioned outer surface. In addition, the width of the protrusion or concave portion in the inclined surface is preferably set to a value in the range of 0.4 mm or more and 0.6 mm or less, and more preferably 0.5 mm.

[0016] In the front pillar of the first aspect of this disclosure, the protrusions or recesses are formed on the outer surface in a dotted arrangement, with the interval between the protrusions or recesses being 0.5 mm or more and 3.0 mm or less.

[0017] According to the above structure, the spacing between the protrusions or concave portions in the inclined surface is set to be 0.5 mm or more and 3.0 mm or less. Therefore, when the driving wind blowing onto the windshield flows from the front side of the vehicle towards the side while contacting the outer surface of the front pillar, the airflow is easily disturbed in a manner that is sometimes moving away from and sometimes closer to the aforementioned outer surface. In addition, the spacing between the protrusions or concave portions in the inclined surface is preferably set to a value in the range of 1.3 mm or more and 1.7 mm or less, and more preferably 1.5 mm.

[0018] In the front pillar according to the first aspect of this disclosure, the following method may also be adopted, namely, the end of the pillar trim on the side where the inclined surface is formed in the rainwater channel and the end on the opposite side of the end are chamfered into an arc shape in a manner connected to the inclined surface. When the tangent of the edge portion relative to the surface of the windshield is set as L1, and the tangent of the respective boundary of the chamfered portion at the two ends in the rainwater channel and the inclined surface is set as L2, the inclination angle θ1 of the tangent L1 and the tangent L2 is set to be more than 10° and less than 20°.

[0019] According to the above structure, the inclination angle θ1 between tangents L1 and L2 is set to 10° or more and 20° or less. If this inclination angle θ1 is reduced excessively, the airflow blowing onto the windshield from the front side of the vehicle towards the side side will have difficulty reaching the sloping surface of the gutter. Conversely, if the inclination angle θ1 is increased excessively, the sloping surface of the gutter will become a resistance to airflow when the airflow blowing onto the windshield from the front side of the vehicle towards the side side. By setting the inclination angle θ1 to 10° or more and 20° or less, it is possible to make it easy for the airflow to reach the sloping surface of the gutter and to prevent the sloping surface from becoming a resistance to airflow. Furthermore, the inclination angle θ1 is preferably set to a value in the range of 13° or more and 17° or less, and more preferably to 15°.

[0020] In the front pillar according to the first aspect of this disclosure, the following method can also be adopted: the end of the rainwater channel on the side of the pillar trim where the inclined surface is formed, and the end opposite to the end, are chamfered into an arc shape in a manner connected to the inclined surface. The tangents relative to the respective boundaries of the chamfered portions at the two ends of the rainwater channel and the inclined surface are set as L2. The end of the pillar trim on the side of the rainwater channel is chamfered into an arc shape in a manner connected to the surface of the pillar trim. When the tangents relative to the boundaries of the chamfered portions at the ends of the pillar trim and the surface are set as L3, the inclination angle θ2 between the tangents L2 and L3 is set to 10° or more and 20° or less.

[0021] According to the above structure, the inclination angle θ2 between tangents L2 and L3 is set to 10° or more and 20° or less. If this inclination angle θ2 is excessively reduced, the curvature must be increased when the surface of the pillar trim bends from the front side to the side side of the vehicle. As a result, air flowing along the surface of the pillar trim is easily detached from the surface. Furthermore, if the inclination angle θ2 is excessively increased, the outer surface of the front pillar bends sharply from the inclined surface of the rain gutter towards the surface of the pillar trim, making it easy for air flowing along the outer surface to detach from the outer surface. By setting the inclination angle θ2 to 10° or more and 20° or less, it is difficult for air flowing along the outer surface of the front pillar to detach from the outer surface and the surface of the pillar trim. In addition, the inclination angle θ2 is preferably set to a value in the range of 13° or more and 17° or less, and more preferably 15°. Attached Figure Description

[0022] The features, advantages, and technical and industrial significance of exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, wherein like symbols denote like elements, and wherein: Figure 1 A three-dimensional view showing the vehicle and its front pillar.

[0023] Figure 2 To indicate the direction of observation from arrow mark II-II Figure 1 A cross-sectional view of the front pillar when it is in its current state.

[0024] Figure 3 To represent in an enlarged manner Figure 2 A cross-sectional view of the section enclosed by dashed lines in the rain gutter of the front pillar.

[0025] Figure 4 To indicate observation from above Figure 3 A top view of the state of the sloping surface in the rainwater gutter.

[0026] Figure 5 To indicate Figure 3 Other examples of cross-sectional views of the shape of the sloping surface in a rain gutter. Detailed Implementation

[0027] The following is an implementation method for the front pillar of a vehicle, which will be described with reference to Figures 1-4 To illustrate. For example Figure 1 As shown, the vehicle has front pillars 11 respectively disposed on both sides in the width direction at the front of the vehicle, and windshields 12 supported by these front pillars 11. The front pillars 11 have outer surfaces 13 that come into contact with the driving wind when it blows onto the windshield 12 and flows to the side of the vehicle. The outer surfaces 13 of the front pillars 11 are curved from the front side to the side side of the vehicle.

[0028] The structure of front pillar 11 like Figure 2 As shown, the front pillar 11 has a frame portion 14 that supports the windshield 12. The frame portion 14 includes 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 stamping a metal sheet. By welding these first pillar reinforcement 16, second pillar reinforcement 17, and inner panel 18 together, the frame portion 14 constituting the frame of the front pillar 11 is formed.

[0029] The front pillar 11 has a decorative member mounted on the frame 14 in a manner that covers the front and sides of the frame 14. The outer surface 13 of the front pillar 11 is formed by the decorative member. The decorative member has a rain gutter 19 that contacts the edge of the surface of the windshield 12, and a pillar trim 20 that extends from the rain gutter 19 toward the side of the vehicle.

[0030] The rain gutter 19 is a component used to prevent water droplets adhering to the surface of the windshield 12 from penetrating between the edge of the windshield 12 surface and the frame portion 14. The rain gutter 19 is located on the front side of the vehicle in the decorative component forming the outer surface 13 of the front pillar 11.

[0031] The rain gutter 19 has 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 located at a distance spaced 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 gets closer to the pillar trim 20. On the inclined surface 23, such as... Figure 3 as well as Figure 4As shown, a plurality of protrusions 24 are formed. That is, the plurality of protrusions 24 are formed in a dotted arrangement. The height h1 of the protrusions 24 is, for example, set to be 0.2 mm or more and 0.8 mm or less. The width W1 of the protrusions 24 is, for example, set to be 0.2 mm or more and 1.0 mm or less. The spacing K1 between the protrusions 24 is, for example, set to be 0.5 mm or more and 3.0 mm or less.

[0032] In addition, the rain gutters 19 and the column trim 20 make Figure 2 The tilt angles θ1 and θ2 shown are formed in a predetermined manner. The tilt angle θ1 is the angle between tangent L1 and tangent L2. Tangent L1 is the tangent relative 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, which is the part where the inclined surface 23 is formed, i.e., the end on the side of the pillar trim 20, and the end opposite to that end, are chamfered into an arc shape in a manner connected to the inclined surface 23. Tangent L2 is the tangent relative to the respective boundaries of the chamfered portions at the two ends of the outer surface portion 22 in the rain gutter 19 and the inclined surface 23. The tilt angle θ1 between tangent L1 and tangent L2 is, for example, set to 10° or more and 20° or less.

[0033] The inclination angle θ2 is the angle between tangents L2 and L3. The outer surface portion 22 of the rainwater trough 19, where the inclination surface 23 is formed, i.e., the end opposite to the column trim 20, is chamfered into an arc shape in a manner connected to the inclination surface 23. Tangent L3 is the tangent line relative to the boundary between the chamfered portion of the column trim 20 and the surface of the column trim 20. The inclination angle θ2 between tangents L2 and L3 is, for example, set to 10° or more and 20° or less.

[0034] The effect of front pillar 11 (1) The airflow blowing onto the windshield 12 flows from the front side of the vehicle toward the side as it contacts the outer surface 13 of the front pillar 11. At this time, due to the friction caused by the viscosity of the air near the outer surface 13 of the front pillar 11, the airflow slows down as it tends to move downstream. As the pressure becomes higher downstream than upstream of this airflow, the airflow near the outer surface 13 of the front pillar 11 flows backward. This backward flow causes the airflow to be stripped from the outer surface 13 of the front pillar 11. Furthermore, wind noise is generated along with the stripping of the airflow from the outer surface 13. This wind noise becomes particularly noticeable when the vehicle speed is above 100 km / h.

[0035] To suppress the aforementioned wind noise, the following consideration is made: when the wind flows from the front side of the vehicle to the side side on the outer surface 13 of the front pillar 11, the airflow near the outer surface 13 of the front pillar 11 is kept constant. For example, if the width of the front pillar 11 is increased in a way that reduces the curvature of the outer surface 13, the slowing down of the airflow near the outer surface 13 of the front pillar 11 can be suppressed. However, if the width of the front pillar 11 is increased, the visibility from inside the vehicle will deteriorate; in other words, the visibility performance will be reduced.

[0036] To suppress wind noise while addressing this situation, multiple protrusions 24 are formed in a dotted arrangement on the front side of the outer surface 13 of the front pillar 11. In this case, when the airflow blowing onto the windshield 12 flows from the front side of the vehicle towards the side while contacting the outer surface 13 of the front pillar 11, the airflow near the outer surface 13 is disturbed by the protrusions 24, sometimes moving away from and sometimes closer to the outer surface 13. Therefore, since momentum is supplied to the air near the outer surface 13, causing an increase in pressure, the slowing of airflow near the outer surface 13 can be suppressed even without increasing the width of the front pillar 11 to reduce the curvature of the outer surface 13. As a result, the situation where the pressure is higher downstream of the airflow near the outer surface 13, causing a backflow and resulting in the airflow being stripped from the outer surface 13, is suppressed. Furthermore, wind noise generated by the stripping of airflow from the outer surface 13 can be suppressed.

[0037] (2) The front pillar 11 has a frame portion 14 that supports the windshield 12 and a decorative member that is mounted on the frame portion 14 to cover the front and sides of the frame portion 14. Furthermore, the outer surface 13 of the front pillar 11 is formed by the aforementioned decorative member.

[0038] According to this structure, after the frame portion 14 and the decorative component are manufactured separately, the front pillar 11 can be formed by mounting the decorative component onto the frame portion 14. Therefore, by pre-forming multiple protrusions 24 on the decorative component during its manufacture, a front pillar 11 with multiple protrusions 24 can be formed when the decorative component is mounted onto the frame portion 14. Thus, the formation of the front pillar 11 with multiple protrusions 24 becomes easier.

[0039] (3) The decorative component has a rain gutter 19 that connects to the edge of the surface of the windshield 12, and a pillar trim 20 that extends from the rain gutter 19 toward the side of the vehicle. Therefore, when the driving wind blowing onto the windshield 12 flows from the front side of the vehicle toward the side side, it will blow onto the inclined surface 23 in the rain gutter 19 in advance, which has a plurality of protrusions 24 formed thereon.

[0040] Furthermore, the slope 23 of the rain gutter 19 is inclined such that the closer it is to the pillar trim 20, the greater the distance relative to the surface of the windshield 12. Therefore, when the driving wind blowing onto the windshield 12 flows from the front side of the vehicle to the side side, it is easily blown onto the slope 23 of the rain gutter 19.

[0041] Therefore, air is blown onto the inclined surface 23 of the rain gutter 19 in advance, and the air is easily blown onto the multiple protrusions 24 formed on the inclined surface 23. As a result, when the driving wind blowing onto the windshield 12 flows from the front side of the vehicle to the side side, the airflow is disturbed in advance relative to the outer surface 13 of the front pillar 11 in a manner that is sometimes away from and sometimes close to it, and such disturbance is easily generated.

[0042] (4) The height h1 of the plurality of protrusions 24 formed on the inclined surface 23 is set to be 0.2 mm or more and 0.8 mm or less. Therefore, when the driving wind blowing onto the windshield 12 flows from the front side to the side side of the vehicle while contacting the outer surface 13 of the front pillar 11, the airflow is easily disturbed in a manner that is sometimes away from and sometimes close to the outer surface 13. In addition, the height h1 of the plurality of protrusions 24 on the inclined surface 23 is preferably set to a value in the range of 0.25 mm or more and 0.75 mm or less, and more preferably 0.5 mm.

[0043] (5) The width W1 of the plurality of protrusions 24 formed on the inclined surface 23 is, for example, set to be 0.2 mm or more and 1.0 mm or less. Therefore, when the driving wind blowing onto the windshield 12 flows from the front side of the vehicle toward the side side while contacting the outer surface 13 of the front pillar 11, the airflow is easily disturbed in a manner that is sometimes away from and sometimes close to the outer surface 13. In addition, the width W1 of the plurality of protrusions 24 on the inclined surface 23 is preferably set to a value in the range of 0.4 mm or more and 0.6 mm or less, and more preferably 0.5 mm.

[0044] (6) The spacing K1 between the protrusions 24 is, for example, set to be 0.5 mm or more and 3.0 mm or less. Therefore, when the driving wind blowing onto the windshield 12 flows from the front side of the vehicle toward the side side while contacting the outer surface 13 of the front pillar 11, the airflow is easily disturbed in a manner that is sometimes away from and sometimes close to the outer surface 13. In addition, the spacing K1 between the plurality of protrusions 24 on the inclined surface 23 is preferably set to a value in the range of 1.3 mm or more and 1.7 mm or less, and more preferably set to 1.5 mm.

[0045] (7) Rainwater gutter 19 Figure 2The inclination angle θ1 between the tangents L1 and L2 shown is set to 10° or more and 20° or less. If this inclination angle θ1 is reduced excessively, the airflow blowing onto the windshield 12 from the front side of the vehicle to the side side will have difficulty reaching the inclined surface 23 of the rain gutters 19. Conversely, if the inclination angle θ1 is increased excessively, the inclined surface 23 of the rain gutters 19 will become a resistance to airflow when the airflow blowing onto the windshield 12 from the front side of the vehicle to the side side. By setting the inclination angle θ1 to 10° or more and 20° or less as described above, it is possible to make it easier for the airflow to reach the inclined surface 23 of the rain gutters 19 and to prevent the inclined surface from becoming a resistance to airflow. Furthermore, the inclination angle θ1 is preferably set to a value in the range of 13° or more and 17° or less, and more preferably to 15°.

[0046] (8) Column decorative element 20 Figure 2 The inclination angle θ2 between the tangents L2 and L3 shown is set to 10° or more and 20° or less. If this inclination angle θ2 is reduced excessively, the curvature of the pillar trim 20 must be increased when it bends from the front side to the side side of the vehicle. As a result, air flowing along the surface of the pillar trim 20 will easily peel off from the surface. Furthermore, if the inclination angle θ2 is increased excessively, the outer surface 13 of the front pillar 11 bends sharply from the inclined surface 23 of the rain gutter 19 to the surface of the pillar trim 20, and air flowing along the outer surface 13 will easily peel off from the outer surface 13. By setting the inclination angle θ2 to 10° or more and 20° or less as described above, air flowing along the outer surface 13 of the front pillar 11 is less likely to peel off from the outer surface 13 and the surface of the pillar trim 20. In addition, the inclination angle θ2 is preferably set to a value in the range of 13° or more and 17° or less, and more preferably 15°.

[0047] Furthermore, the above-described embodiments can also be modified in the following ways. The above-described embodiments and the following modifications can be combined and implemented with each other within a technically consistent scope. Instead of forming a plurality of protrusions 24 in a dotted arrangement on the inclined surface 23 of the outer surface 22 in the rainwater trough 19, it is also possible to... Figure 5 As shown, a plurality of recesses 25 are formed on the inclined surface 23 in a dotted arrangement. In this case, the depth h2, width W2, and spacing K2 of the plurality of recesses 25 are considered as follows.

[0048] The depth h2 of the recess 25 is, for example, set to be 0.2 mm or more and 0.8 mm or less. In addition, the depth h2 of the recess 25 is preferably set to a value in the range of 0.25 mm or more and 0.75 mm or less, and more preferably set to 0.5 mm.

[0049] The width W2 of the recess 25 is, for example, set to be 0.2 mm or more and 1.0 mm or less. In addition, the width W2 of the recess 25 is preferably set to a value in the range of 0.4 mm or more and 0.6 mm or less, and more preferably 0.5 mm.

[0050] The spacing K2 between the recesses 25 is, for example, set to be 0.5 mm or more and 3.0 mm or less. Preferably, the spacing K2 between the recesses 25 is set to a value in the range of 1.3 mm or more and 1.7 mm or less, and more preferably, it is set to 1.5 mm.

[0051] The aforementioned protrusion 24 and recess 25 may also be formed on the inclined surface 23 in a mixed manner. In this case, consider setting the height h1 of the protrusion 24 and the depth h2 of the recess 25 to, for example, half of the aforementioned values.

[0052] The decorative component can also be a component in which the rain gutter 19 and the column decoration 20 are integrated. The column decoration 20 can also be a component that is fixed to the frame part 14 by welding or the like.

[0053] The front pillar 11 can also be a component that integrates the frame part 14 with the decorative parts.

Claims

1. A front pillar for a vehicle, which supports the windshield of the vehicle, characterized in that, Includes an outer surface configured to contact the driving wind as it flows laterally across the vehicle onto the windshield. The outer surface curves from the front side to the side side of the vehicle. On the outer surface of the front side of the vehicle, at least one of the protrusions and recesses is formed in a dotted configuration.

2. The front pillar of the vehicle as described in claim 1, characterized in that, include: The frame supports the windshield; Decorative components are mounted on the skeleton in a manner that covers the front and sides of the skeleton. The outer surface is formed by the decorative component.

3. The front pillar of the vehicle as described in claim 2, characterized in that, The decorative component includes a rain gutter and pillar trim. The rain gutter is attached to the edge of the windshield surface, and the pillar trim extends from the rain gutter toward the side of the vehicle. The rain gutter has an inclined surface that is tilted such that the distance relative to the surface of the windshield increases as it gets closer to the pillar trim. At least one of the recess and the protrusion is formed on the inclined surface.

4. The front pillar of the vehicle as described in any one of claims 1 to 3, characterized in that, The protrusions or recesses are formed on the outer surface in a dotted arrangement. The height of the protrusion or the depth of the recess is set to be greater than 0.2 mm and less than 0.8 mm.

5. The front pillar of the vehicle as described in any one of claims 1 to 3, characterized in that, The protrusions or recesses are formed on the outer surface in a dotted arrangement. The width of the protrusion or the recess is set to be more than 0.2 mm and less than 1.0 mm.

6. The front pillar of the vehicle as described in any one of claims 1 to 3, characterized in that, The protrusions or recesses are formed on the outer surface in a dotted arrangement. The spacing between the protrusions or recesses is set to be more than 0.5 mm and less than 3.0 mm.

7. The front pillar of the vehicle as described in claim 3, characterized in that, The portion of the rainwater trough where the inclined surface is formed, namely the end on the side of the column decorative piece and the end on the opposite side, are chamfered into an arc shape in a manner connected to the inclined surface. When the tangent to the edge of the windshield surface is defined as L1, and the tangent to the chamfered portions at the two ends of the rain gutters and the respective boundaries of the inclined surfaces is defined as L2, The inclination angle θ1 between tangents L1 and L2 is set to be greater than 10° and less than 20°.

8. The front pillar of the vehicle as described in claim 3, characterized in that, The portion of the rainwater trough where the inclined surface is formed, namely the end on the side of the column decorative piece and the end on the opposite side, are chamfered into an arc shape in a manner connected to the inclined surface. Let L2 be the tangent line relative to the respective boundaries of the chamfered portions at the two ends of the rainwater trough and the inclined surface. The end of the column decorative element on the rainwater channel side is chamfered into an arc shape so as to be connected to the surface of the column decorative element. When the tangent line relative to the end of the column trim, i.e. the chamfered portion, and the boundary of the surface is defined as L3, The inclination angle θ2 between tangents L2 and L3 is set to be greater than 10° and less than 20°.

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