JP2015077918A - Vehicle body front structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique that can weaken a vortex flow generated along a front pillar.SOLUTION: A vehicle 10 includes a front hood 11, a front window 12 that extends rearward and upward from a rear end of the front hood 11, a vehicle body side part 13 that intersects with the front hood 11 and the front window 12 and extends in the vehicle front-back direction, and a front pillar 15 that extends rearward and upward along an edge in the vehicle width direction of the front window 12. A projection 21 extending in the vehicle front-back direction is formed on an extension line L1 of a boundary part P1 between the front window 12 and the front hood 11 of the vehicle body side part 13.

Description

  The present invention relates to an improved vehicle body front structure.

  Patent Document 1 discloses that a rectifying plate (9) is provided in the gap between the side surface of the vehicle and the side mirror housing, and the wind passing through the gap is rectified toward the center in the vertical direction of the side mirror. According to this technology, wind rectification is performed in the gap between the side mirror and the vehicle body, but this is not the only cause of the deterioration of the aerodynamics of the vehicle.

  The wind that flows from the front window to the side surface of the vehicle body via the front pillar is separated at the step portion between the front window and the front pillar. The peeled air usually adheres again to the side surface of the vehicle body and flows upward along the front pillar.

  However, when the front window of the vehicle is standing, the amount of air flowing to the side of the vehicle increases at the base of the front pillar (the side of the corner between the front window and the engine hood). For this reason, when the air peeled off from the corner portion becomes a large vortex, and the vortex flows as it is along the front pillar as it is, the air separated above the root is involved and a larger vortex is generated.

Japanese Utility Model Publication No. 61-205832

  This invention makes it a subject to provide the technique which can weaken the vortex | eddy_current generated along a front pillar.

According to the invention of claim 1, a front hood and a front window extending rearward and upward from the rear end of the front hood,
A vehicle body side surface crossing the front hood and the front window and extending in the vehicle front-rear direction;
A front pillar extending rearward and upward along the vehicle width direction end of the front window,
A vehicle is provided in which a protruding portion extending in the vehicle front-rear direction is formed on an extension line of a boundary portion between the front hood and the front window on the side surface of the vehicle body.

As described in claim 2, preferably, the side surface of the vehicle body includes a side mirror,
The protruding portion is provided in front of the side mirror.

As described in claim 3, preferably, a side door is provided adjacent to the front pillar on the side surface of the vehicle body,
The side door includes a door glass, a sash extending along the front edge of the door glass, and a garnish that covers the front end of the sash from the outside of the vehicle,
The protrusion is provided on the garnish.

As described in claim 4, preferably, a second garnish is provided along the front end of the side door on the side surface of the vehicle body,
The second garnish is provided flush with the garnish.

  As described in claim 5, preferably, the protruding portion is provided below the upper end of the second garnish.

As described in claim 6, preferably, a concave portion recessed inward in the vehicle width direction from the side surface of the front pillar is formed on the side surface portion of the vehicle body,
The protrusion is provided in the recess.

  According to a seventh aspect of the present invention, preferably, the lower surface of the projecting portion is formed to be horizontal or an inclined surface that goes downward from the side surface of the vehicle body toward the outside in the vehicle width direction.

  In the invention according to claim 1, a projecting portion extending in the vehicle front-rear direction is formed on an extension line of the boundary portion between the front hood and the front window on the side surface of the vehicle body. As a result, the air peeled off at the level difference between the front window and the front pillar near the root of the front pillar (on the extension line of the boundary (corner) between the front hood and the front window) adheres to the side of the vehicle body and then reaches the front pillar. Therefore, the vortex generated along the front pillar can be weakened.

That is, according to the invention concerning Claim 1, it can also be said as follows.
From the general surface on the side mirror garnish, a projecting portion protruding outward in the vehicle width is provided in the front-rear direction. The protrusion is formed at the same height as the base of the front pillar or above the base of the front pillar. This suppresses upward flow on the side mirror garnish, reduces the front pillar vortex, and reduces the CD value (air resistance acting on the vehicle body). Entrainment due to corn garnish, side mirror garnish, and front pillar vortex on the triangular window can be reduced.

  In the invention which concerns on Claim 2, the protrusion part is spaced apart and provided ahead of the side mirror. If the peeled air hits the side mirror before adhering to the side of the car body, the turbulence of the air will increase, but the above problem can be prevented by placing the side mirror behind the protruding part. it can. Since the protrusion is provided at a position where the peeled air adheres, the side mirror is arranged behind the protrusion so that it can be prevented from colliding with the side mirror before the air adheres as a result. .

  In the invention according to claim 3, since the protruding portion is provided on the garnish covering the sash, a dedicated component for forming the protruding portion becomes unnecessary, and the number of components can be reduced.

  Further, since the garnish is provided with the projecting portion, the projecting portion can be disposed close to the front end of the side door, so that it can be disposed closer to the root of the front pillar, and the eddy current can be effectively weakened. In addition, the turbulence of the air generated at the step between the garnish and the door glass can be suppressed by the traveling wind rectified by the projecting portion.

  In the invention according to claim 4, the second garnish is provided flush with the garnish. When the air peeled in the vicinity of the projecting portion adheres to the side surface portion of the vehicle body, the adhering surface is flush with the air, so that air turbulence can be suppressed.

  In the invention which concerns on Claim 5, the protrusion part is provided below rather than the upper end of the 2nd garnish. Since the air flow can be guided downward from the upper end of the second garnish by the protrusions, it is possible to prevent air turbulence from occurring at the upper end of the second garnish.

  In the invention which concerns on Claim 6, the protrusion part is provided in the recessed part dented in the vehicle width direction inner side from the side surface of the front pillar. Since it can suppress that a protruding part protrudes in the vehicle width direction outside when it sees from the vehicle front, the improvement of design property and the disorder of air can be suppressed.

  In the invention which concerns on Claim 7, the lower surface of the protruding part is formed in the horizontal or the inclined surface which goes below as it goes to a vehicle width direction outer side from a vehicle body side part. Thereby, it can suppress effectively that air gets over a protruding part and goes upwards.

1 is a perspective view of a vehicle in which a front structure of a vehicle body according to a first embodiment of the present invention is adopted. It is a figure explaining the vehicle shown by FIG. FIG. 3 is a sectional view taken along line 3-3 in FIG. 1. FIG. 4 is an enlarged view of part 4 of FIG. 3. FIG. 5 is a sectional view taken along line 5-5 of FIG. It is a figure explaining the effect | action of the vehicle shown by FIG. It is sectional drawing of the garnish and protrusion part of a vehicle by which the front part structure of the vehicle body by Example 2 of this invention is employ | adopted.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. In the description, left and right refer to the left and right based on the vehicle occupant, and front and rear refer to the front and rear based on the traveling direction of the vehicle. In the figure, Fr is front, Rr is rear, L is left when viewed from the occupant, R is right when viewed from the occupant, Ce is the center of the vehicle width, Ou is outside the vehicle width, Up is up, and Dw is down. ing. FIG. 2A shows the vehicle viewed from the front, and FIG. 2B shows the vehicle viewed from the left side.

  As shown in FIGS. 1 to 5, the vehicle 10 intersects the front hood 11, a front window 12 extending upward from the rear of the front hood 11, and the front hood 11 and the front window 12. Left and right vehicle body side portions 13 extending in the vehicle front-rear direction and left and right front pillars 15 extending rearward and upward along the vehicle width direction end portion of the front window 12 are provided. The vehicle body side surface portion 13 forms the side surface of the vehicle body 18.

  A protruding portion 21 extending in the front-rear direction is formed on an extension line L1 (extension line L1 drawn horizontally from the boundary portion P1) of the boundary portion (corner) P1 between the front hood 11 and the front window 12 of the side surface portion 13 of the vehicle body. Has been. That is, the protruding portion 21 is located at the same height with respect to the boundary portion P1 between the front hood 11 and the front window 12 at the vehicle width end portion. The boundary portion P1 is an end portion of the front hood 11, and is also the highest portion of the front hood 11 in the height direction.

  The vehicle body side surface portion 13 includes a side mirror 22. The protruding portion 21 is provided so as to be spaced forward from the side mirror 22. The vehicle body side surface portion 13 includes a vehicle body front side portion 14, a front pillar 15, a side door 23, and a second garnish 27. The front pillar 15 extends rearward and upward from the rear end of the hood 11. Both side portions of the front window 12 are supported by these front pillars 15.

  A side door 23 is provided on the side surface 13 of the vehicle body adjacent to the front pillar 15. The side door 23 includes a door glass 24, a sash 25 that extends along the front edge of the door glass 24, and a garnish 26 that covers the front end of the sash 25 from the outside of the vehicle. The protruding portion 21 is provided integrally with the garnish 26. That is, the protruding portion 21 is integrally formed on a part of the garnish 26.

  Since the protruding portion 21 is provided on the garnish 26 that covers the sash 25, a dedicated component for forming the protruding portion 21 is not required, and the number of components can be reduced. The protruding portion 21 protrudes from the general surface L2 of the garnish 26 toward the outer side of the vehicle width.

  A second garnish 27 is provided on the side surface 13 of the vehicle body along the front end of the side door 23. The second garnish 27 is provided flush with the garnish 26. Both the garnish 26 and the second garnish 27 are resin members. The garnish 26 is attached to the side surface portion 13 of the vehicle body via a clip 33.

  The protruding portion 21 is provided below the upper end of the second garnish 27.

  The vehicle body side surface portion 13 is formed with a recess 31 that is recessed inward in the vehicle width direction from the side surface of the front pillar 15. The protruding portion 21 is provided in the recessed portion 31. More specifically, a garnish 26 is attached to the recess 31 formed in the vehicle body side surface portion 13, and the protruding portion 21 is formed on the garnish 26. The tip of the projecting portion 21 is located on the inner side in the vehicle width direction from the side surface of the front pillar 15, and the projecting portion 21 cannot be visually recognized when the vehicle is viewed from the front.

  Since it can suppress that the protruding part 21 protrudes on the vehicle width direction outer side when it sees from the vehicle front, the improvement of design property and the disorder of air can be suppressed.

  The lower surface 21a of the protruding portion 21 is formed in parallel to the horizontal plane.

  The front hood 11 is provided so as to be able to open and close an upper opening of an engine room (a chamber in front of the passenger compartment). More specifically, the front hood 11 is attached to be swingable up and down via a rotation shaft attached to the rear end of the engine room.

  The front window 12 is fixed to the vehicle body 18 so as to be raised from the rear end of the front hood 11. The front window 12 is a windshield provided over the vehicle width direction.

  The door main body 32 of the side door 23 is a member having a closed cross section formed of an inner panel 32a and an outer panel 32b.

  FIG. 6A shows a vehicle according to a comparative example. As indicated by a plurality of arrows in FIG. 6A, the air separated at the step between the front window 112 and the front pillar 115 near the root of the front pillar 115 adheres to the side surface portion 113 of the vehicle body and then reaches the front pillar 115. Along the top. As a result, the vortex generated along the front pillar 115 is strengthened. That is, when a large amount of air flows along the front pillar 115, an undesired vortex is generated.

  FIG. 6B shows a vehicle according to the embodiment. As shown by a plurality of arrows in FIG. 6B, a step between the front window 12 and the front pillar 15 near the root of the front pillar 15 (on the extended line of the boundary portion P1 between the front hood 11 and the front window 12). Since the projecting portion 21 is formed on the side surface portion 13 of the vehicle body, the peeled air can be prevented from flowing upward along the front pillar 15 after adhering to the side surface portion 13 of the vehicle body. The eddy current generated can be weakened. In other words, the air that has passed below the projecting portion 21 is caused to flow backward rather than rearward and upward by the projecting portion 21.

  If the peeled air hits the side mirror 22 before adhering to the side surface portion 13 of the vehicle body, the turbulence of the air becomes larger (and the eddy current becomes complicated). The above problem can be prevented by arranging the side mirror 22. Since the protruding portion 21 is provided at a position where the peeled air adheres, the side mirror 22 is arranged behind the protruding portion 21 so that the air collides with the side mirror 22 before the air adheres as a result. Can be prevented.

  The protruding portion 21 is provided on the garnish 26. As a result, the projecting portion 21 can be disposed close to the front end of the side door 23, so that it can be disposed closer to the root of the front pillar 15, and the vortex can be effectively weakened. In addition, the turbulence of the air generated at the step between the garnish 26 and the door glass 24 can be suppressed by the traveling wind rectified by the projecting portion 21.

  The lower surface 21a of the protruding portion 21 is formed in parallel to the horizontal plane. Thereby, it can suppress effectively that air gets over the protruding part 21 and goes upwards.

  Referring also to FIG. 5, the second garnish 27 is provided flush with the garnish 26. When the air peeled in the vicinity of the projecting portion 21 adheres to the side surface portion 13 of the vehicle body, the adhering surface is flush, so that the turbulence of the air can be suppressed.

  With reference to FIGS. 6 and 1, the protrusion 21 is provided below the upper end of the second garnish 27. Since the air flow can be guided downward from the upper end of the second garnish 27 by the projecting portion 21, it is possible to prevent air turbulence from occurring at the upper end of the second garnish 27.

  Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 7 shows a cross-sectional configuration of the side mirror garnish and the convex portion used in the vehicle body front structure according to the second embodiment, and is shown corresponding to FIG.

  As shown in FIG. 7, the protruding portion 21A is formed separately from the garnish 26A. In addition, the lower surface 21Aa of the protruding portion 21A is formed as an inclined surface that goes downward from the vehicle body side surface portion 13 toward the outside in the vehicle width direction. Even in such a case, the predetermined effect of the present invention can be obtained.

  In the vehicle body front structure according to the present invention, the embodiments can be combined. For example, the lower surface of the projecting portion formed integrally with the garnish may be formed with a downward slope toward the outer side of the vehicle width. That is, the present invention is not limited to the examples.

  As a technique similar to the present invention, there is a technique in which a protrusion is formed in the vicinity of a side mirror to generate a vortex in the vicinity of the side mirror and press the vehicle body from the side to improve high-speed stability. Such an invention and the present invention are different in principle and purpose and different in effect on the vehicle body. In other words, this is a different invention.

  The front structure of the vehicle body of the present invention is suitable for a passenger car.

DESCRIPTION OF SYMBOLS 11 ... Front hood 12 ... Front window 13 ... Car body side part 14 ... Car body front side part 15 ... Front pillar 21, 21A ... Projection part 21a, 21Aa ... (Lower side of projection part) 22 ... Side mirror 22a ... Side mirror housing Tip 23 ... Side door 24 ... Door glass 25 ... Sash 26, 26A ... Garnish 26b ... Clip mounting part 27 ... Second garnish 31 ... Recess P1 ... Boundary part L1 ... Extension line

Claims (7)

A front hood (11) and a front window (12) extending rearward and upward from the rear end of the front hood (11);
A vehicle body side surface (13) that intersects the front hood (11) and the front window (12) and extends in the vehicle longitudinal direction;
A vehicle front structure comprising a front pillar (15) extending rearward and upward along the vehicle width direction end of the front window (12),
Protruding portions (21, 21A) extending in the vehicle front-rear direction are formed on an extension line (L1) of the boundary portion (P1) between the front hood (11) of the vehicle body side portion (13) and the front window (12). The vehicle body front structure characterized by being made. The vehicle body side part (13) includes a side mirror (22),
The vehicle body front part structure according to claim 1, characterized in that the projecting portions (21, 21A) are provided in front of the side mirror (22). The vehicle body side surface (13) is provided with a side door (23) adjacent to the front pillar (15),
The side door (23) includes a door glass (24), a sash (25) extending along a front edge of the door glass (24), and a garnish (26, 26) covering the front end of the sash (25) from the outside of the vehicle. 26A),
The vehicle body front part structure according to claim 1 or 2, wherein the protrusion (21, 21A) is provided on the garnish (26, 26A). A second garnish (27) is provided along the front end of the side door (23) on the vehicle body side surface (13),
The vehicle body front structure according to claim 3, wherein the second garnish (27) is provided flush with the garnish (26, 26A).   The vehicle body front part structure according to claim 4, wherein the protrusions (21, 21A) are provided below the upper end of the second garnish (27). The vehicle body side surface (13) is formed with a recess (31) recessed inward in the vehicle width direction from the side surface of the front pillar (15).
The vehicle body front part structure according to any one of claims 1 to 5, wherein the protrusions (21, 21A) are provided in the recess (31).   The lower surfaces (21a, 21Aa) of the projecting portions (21, 21A) are formed to be horizontal or inclined surfaces that go downward from the vehicle body side surface portion (13) toward the outside in the vehicle width direction. The vehicle body front part structure according to any one of claims 1 to 6.

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