JP6455493B2 - Vehicle front structure - Google Patents

Description

  The present invention relates to a vehicle front structure having a cowl portion.

  Generally, the vehicle front structure includes a cowl top panel that extends upward from the upper end of the dash panel and supports the lower end of the front windshield, and a cowl front panel that extends forward from the upper end of the dash panel. It has a cowl part. A wiper device including a wiper link for driving the wiper and a wiper motor is disposed in the cowl portion (see, for example, Patent Document 1).

JP 2011-173448 A

However, in the conventional vehicle front structure described above, the heavy wiper device is attached to the cowl front panel, which is the front plate of the cowl inner, via the wiper bracket. The vibration of the panel was amplified, the deformation around the cowl top panel and the dash panel was increased, noise and discomfort occurred, and the ride comfort of the vehicle could be reduced.
Further, since vibration and deformation due to the drive of the wiper are also received by the cowl front panel, there is a possibility that noise and vibration problems may occur through deformation of the cowl top panel and dash panel.

  The present invention has been made in view of such a situation, and an object of the present invention is to ensure the rigidity of the cowl top panel and its peripheral parts and ensure the necessary pedestrian protection performance, and the cowl top panel and the cowl. An object of the present invention is to provide a vehicle front structure that can suppress deformation of a front panel.

In order to solve the above-described problems of the prior art, the present invention provides a cowl top panel that extends upward from the upper end portion of the dash panel and supports the lower end portion of the front window glass, and from the upper end portion of the dash panel to the vehicle front side. A vehicle front part structure having a cowl portion having a cowl front panel extending, and a wiper driving portion for driving a wiper disposed in the cowl portion, wherein the wiper driving portion is connected to the cowl front via a fixing bracket. A lower reinforcing member that is fixed to the upper surface of the panel and that supports the cowl front panel from the lower side of the vehicle is disposed below the cowl front panel, and the lower reinforcing member extends to the tip of the cowl front panel. extends, is provided across the joint of the cowl front panel and said dash panel, said The said lower reinforcing member and the fixed bracket are disposed at positions overlapping in the vertical direction of the vehicle across said cowl front panel.

As described above, the vehicle front portion structure according to the present invention extends from the upper end portion of the dash panel to the upper side of the vehicle, supports the lower end portion of the front window glass, and extends from the upper end portion of the dash panel to the front of the vehicle. A cowl portion having a cowl front panel, and a wiper driving portion for driving a wiper is disposed in the cowl portion, and the wiper driving portion is fixed to the upper surface of the cowl front panel via a fixing bracket. A lower reinforcing member that supports the cowl front panel from the lower side of the vehicle is disposed below the cowl front panel, and the lower reinforcing member extends to a front end portion of the cowl front panel. The fixing bracket and the lower reinforcing portion are provided across the joint between the front panel and the dash panel. And is disposed at a position overlapping with the vehicle vertical direction across said cowl front panel. Therefore, according to the vehicle front structure of the present invention, the rigidity of the cowl top panel and its peripheral parts can be ensured, and the necessary pedestrian protection performance can be ensured.
Further, in the vehicle front structure according to the present invention, since the fixing portion of the wiper driving portion is provided independently on the upper surface of the cowl front panel, vibration transmitted from the cowl front panel to the cowl top panel can be reduced. And deformation of the cowl top panel can be suppressed. Further, it is possible to reduce the vibration caused by the drive of the wiper from the cowl top panel and the cowl front panel to the dash panel, and to prevent a decrease in NVH (vibration, noise and riding comfort) performance.
Further, in the vehicle front structure of the present invention, the lower reinforcing member supports the cowl front panel from the lower side of the vehicle, and the weight of the wiper driving portion acts on the lower reinforcing member as a load in the compression direction. Therefore, the deformation of the cowl front panel due to the weight of the wiper driving unit can be minimized.

It is the perspective view which looked at the vehicle front part to which the structure concerning the embodiment of the present invention was applied from the vehicle front side slanting upper part. It is the enlarged front view which looked at the X section of Drawing 1 from the vehicles front. It is the sectional view on the AA line in FIG. FIG. 3 is a sectional view taken along line BB in FIG. 2. FIG. 3 is a sectional view taken along line CC in FIG. 2.

Hereinafter, the present invention will be described in detail based on illustrated embodiments.
1 to 5 show a vehicle front structure according to an embodiment of the present invention. In the figure, the arrow Fr direction indicates the front of the vehicle in the vehicle front-rear direction, the arrow O direction indicates the vehicle exterior (vehicle outside) in the vehicle width direction, and the arrow U direction indicates the vehicle upper direction in the vehicle vertical direction. .

  As shown in FIGS. 1 to 5, an engine room that is opened and closed by a front hood (not shown) that can be rotated in the vehicle vertical direction is provided in a vehicle front portion 1 to which the structure according to the embodiment of the present invention is applied. E is provided, and a vehicle compartment R is provided behind the engine room E with a dash panel 2 in between. That is, the engine room E and the passenger compartment R are partitioned by the dash panel 2 that forms the lower front wall of the passenger compartment R. For this reason, the dash panel 2 extends across the entire width of the engine room E in the vehicle width direction, and extends to the vicinity of the upper part of the engine room E in the vehicle vertical direction.

  Further, the vehicle front portion 1 of the present embodiment extends from the upper end portion 2a of the dash panel 2 to the upper side of the vehicle, and includes a cowl top panel 4 that supports the lower end portion 3a of the front window glass 3, and an upper end portion 2a of the dash panel 2. A cowl portion 11 having a cowl front panel 5 extending forward of the vehicle is provided. A wiper drive unit 6 for driving a wiper (not shown) is disposed in the cowl unit 11, and the wiper drive unit 6 is connected to the wiper motor 61 and the wiper motor 61. A wiper link 62 is provided.

As shown in FIGS. 2 and 3, the cowl top panel 4 includes a panel upper part 41 and a panel lower part 42. The upper part 41 of the panel is bent and formed in a flat shape in which the upper half in the vertical direction of the vehicle is inclined downward toward the front of the vehicle, and the upper half of the flat shape can support the lower end 3a of the front window glass 3. ing.
As shown in FIG. 4, the panel lower portion 42 is formed with a bent portion 42 a whose upper portion protrudes toward the rear of the vehicle in the vehicle vertical direction. A curved surface portion 42b is formed by bending an intermediate portion in the direction toward the front of the vehicle. In addition, a vertical bead portion 42c extending in the vehicle vertical direction is formed in the lower portion of the panel lower portion 42. The curved surface portion 42b and the vertical bead portion 42c are provided to increase the rigidity of the panel lower portion 42.

In the cowl portion 11 of the present embodiment, a lower reinforcing member 7 for supporting the cowl front panel 5 from the lower side of the vehicle is provided below the intermediate portion of the cowl front panel 5 in the vehicle width direction, as shown in FIGS. Are inclined in the vehicle longitudinal direction. Therefore, the lower reinforcing member 7 has a length such that the front end portion 7a extends to the front end portion 5a of the cowl front panel 5, and the rear end portion 7b extends to the rear end portion 5b of the cowl front panel 5. The cowl front panel 5 is disposed along the lower side.
That is, the lower reinforcing member 7 is located from the front end portion 5 a of the cowl front panel 5 to the rear end portion 5 b of the cowl front panel 5, and the front end portion 5 a of the cowl front panel 5 and the upper end portion 2 a of the dash panel 2. It is arranged between. Further, the rear end portion 7b of the lower reinforcing member 7 is provided in a state of straddling the joint portion W between the rear end portion 5b of the cowl front panel 5 and the upper end portion 2a of the dash panel 2, and the cowl front panel 5 And it is fixed by joining the overlapping part with the dash panel 2. Moreover, the lower reinforcing member 7 is a plate-shaped body having a cross-sectional hat shape with an upper opening, and a closed cross section that can increase rigidity by overlapping and joining the flange portions on both sides to the cowl front panel 5. Formed in the structure.

As shown in FIGS. 2 to 5, a fixing bracket 8 for fixing the wiper drive unit 6 with a fastening member or the like is installed on the upper surface of the cowl front panel 5 of the present embodiment. That is, the wiper driving unit 6 is fixed to the upper surface of the cowl front panel 5 via the fixing bracket 8. In addition, on the upper surface of the cowl front panel 5, two bead portions 51 for increasing the rigidity of the portion where the wiper driving portion 6 is fixed are provided at intervals in the vehicle width direction while extending in the vehicle front-rear direction. These bead portions 51 are formed in a convex shape or a concave shape.
Therefore, the fixing bracket 8 is fixed to the upper surface of the cowl front panel 5 provided with the bead portion 51. On the other hand, the front end portion 7a of the lower reinforcing member 7 is joined and fixed to the lower surface of the cowl front panel 5 provided with the bead portion 51. Therefore, the fixed bracket 8 and the tip end portion 7a of the lower reinforcing member 7 are arranged at positions where they overlap with each other with the cowl front panel 5 interposed therebetween.

As shown in FIGS. 1 to 5, an upper reinforcing member 9 extending in the vehicle front-rear direction is provided near the center of the vehicle front portion 1 in the vehicle width direction in the present embodiment. The upper reinforcing member 9 is disposed at a position close to the lower reinforcing member 7 in the vehicle width direction and at a position opposite to the wiper driving portion 6, and connects the cowl top panel 4 and the cowl front panel 5. It has a structure to do.
The distal end portion 9 a of the upper reinforcing member 9 is joined and fixed to the upper surface of the distal end portion 5 a of the cowl front panel 5. Further, the rear end portion 9b of the upper reinforcing member 9 is fixed to the lower side of the bent portion 42a formed in the panel lower portion 42 of the cowl top panel 4, and the cowl top positioned below the bent portion 42a in the vehicle. The arrangement structure increases the rigidity of the panel 4.

  For this reason, as shown in FIGS. 4 and 5, the upper reinforcing member 9 of the present embodiment is divided into two triangular portions based on a diagonal line, and a rectangular plate-like body that is erected by bending one triangular portion. It has a shape that suppresses vibrations in the vehicle vertical direction and vehicle longitudinal direction. That is, the upper reinforcing member 9 has an elongated triangular shape when viewed from above the vehicle, and also has an elongated triangular shape when viewed from the side of the vehicle. In addition, the upper reinforcing member 9 has a size in the vehicle width direction that is larger in the vehicle width direction than the rear end portion 9b in the vehicle upper view, and the rear end portion 9b in the vehicle upper and lower directions in the vehicle side view as compared with the front end portion 9a. The direction dimension is larger.

Moreover, the upper side reinforcement member 9, the lower side reinforcement member 7, and the fixing bracket 8 are arrange | positioned so that it may adjoin by the vehicle width direction, as shown in FIGS. In addition, the joint fixing portion between the tip portion 9 a of the upper reinforcing member 9 and the tip portion 5 a of the cowl front panel 5 is located on the vehicle front side with respect to the fixing portion of the wiper driving portion 6.
Therefore, the cowl portion 11 of the present embodiment is surrounded by four members, that is, the upper reinforcing member 9, the lower reinforcing member 7, the cowl top panel 4, and the dash panel 2 when viewed from the side of the vehicle, as shown in FIG. And is configured as an annular structure Z in a vehicle side view. The annular structure portion Z suppresses vibrations in the vehicle vertical direction and the vehicle front-rear direction (for example, vibration in the rotational direction about the vehicle width direction, twist).

  Further, as shown in FIG. 4, the fixing bracket 8 of the present embodiment has a vehicle rear side rather than the front end portion 5 a of the cowl front panel 5 to which the upper reinforcing member 9 and the lower reinforcing member 7 are fixed as viewed from the side of the vehicle. The position is fixed. As a result, the fixed bracket 8 is positioned inside the annular structure portion Z surrounded by the upper reinforcing member 9, the lower reinforcing member 7, the cowl top panel 4, and the dash panel 2 in the vehicle side view.

Thus, in the structure of the vehicle front portion 1 according to the embodiment of the present invention, the wiper driving portion 6 disposed in the cowl portion 11 is fixed to the upper surface of the cowl front panel 5 via the fixing bracket 8. Since the fixing portion of the wiper drive unit 6 is provided independently on the upper surface of the cowl front panel 5, vibrations transmitted from the cowl front panel 5 to the cowl top panel 4 can be reduced, and the cowl top panel 4 Deformation can be suppressed. Further, it is possible to reduce the vibration of the wiper driven by the wiper driving unit 6 from propagating from the cowl top panel 4 and the cowl front panel 5 to the dash panel 2 and to ensure good NVH performance.
A lower reinforcing member 7 for supporting the cowl front panel 5 from the lower side of the vehicle is disposed below the cowl front panel 5, and a rear end portion 7b of the lower reinforcing member 7 is formed on the cowl front panel. 5 is provided across the junction W between the rear end 5b of the dash panel 2 and the upper end 2a of the dash panel 2, and the fixed bracket 8 and the front end 7a of the lower reinforcing member 7 It is arranged at a position overlapping in the direction. Therefore, since the weight of the wiper driving portion 6 acts as a load in the compression direction on the lower reinforcing member 7, deformation of the cowl front panel 5 due to the weight of the wiper driving portion 6 can be effectively suppressed. .
Therefore, according to the structure of the vehicle front portion 1 of the present embodiment, the rigidity of peripheral parts such as the cowl top panel 4 and the cowl front panel 5 can be secured, and necessary pedestrian protection performance can be secured.

Further, in the structure of the vehicle front portion 1 of the present embodiment, the lower reinforcing member 7 extends to the front end portion 5 a of the cowl front panel 5. Further, an upper reinforcing member 9 that connects the cowl top panel 4 and the cowl front panel 5 at a position close to the lower reinforcing member 7 in the vehicle width direction and at a position opposite to the wiper driving unit 6 on the outer side of the vehicle. The upper reinforcing member 9 and the lower reinforcing member 7 are fixed to the front end portion 5a of the cowl front panel 5, while the rear end portion 9b of the upper reinforcing member 9 is provided on the cowl top panel 4. It is being fixed to the lower side of the bent part 42a extended in the vehicle width direction.
Therefore, in the structure of the vehicle front portion 1 of the present embodiment, the rigidity of the cowl top panel 4 positioned below the bent portion 42 a can be increased by the upper reinforcing member 9. Moreover, the rigidity of the cowl top panel 4 positioned below the bent part 42a is increased, so that the rigidity of the upper part of the cowl top panel 4 is relatively lowered, and the vehicle front part 1 receives an impact load from the outside. Sometimes only the top of the cowl top panel 4 can be reliably deformed.
In addition, if the lower reinforcing member 7 and the upper reinforcing member 9 are arranged in the above-described positional relationship, the tip portion of the cowl portion 11 is reinforced against the impact load in the vehicle vertical direction. When the impact load is applied to the vehicle front portion 1, the deformation of the tip portion of the cowl portion 11 can be effectively suppressed. In particular, when the lower reinforcing member 7 and the upper reinforcing member 9 are arranged in the vicinity of the central portion in the vehicle width direction, deformation of the central portion that becomes the belly of the opening of the cowl portion 11 can be suppressed.

  Further, in the structure of the vehicle front portion 1 according to the present embodiment, the vehicle is located behind the front end portion 5a of the cowl front panel 5 where the fixing bracket 8 is fixed to the upper reinforcing member 9 and the lower reinforcing member 7 when the vehicle is viewed laterally. The fixing bracket 8 is located inside the annular structure portion Z surrounded by the upper reinforcing member 9, the lower reinforcing member 7, the cowl top panel 4 and the dash panel 2 in the vehicle side view. Therefore, it is possible to effectively support the input load starting from the fixed portion of the wiper driving unit 6.

  While the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made based on the technical idea of the present invention.

  For example, the upper reinforcing member 9 in the above-described embodiment has an elongated triangular shape when viewed from above the vehicle and also has an elongated triangular shape when viewed from the side of the vehicle. As long as it can be connected to the front panel 5, it may be formed in another shape.

DESCRIPTION OF SYMBOLS 1 Vehicle front part 2 Dash panel 2a Upper end part 3 Front window glass 3a Lower end part 4 Cowl top panel 5 Cowl front panel 5a Front end part 5b Rear end part 6 Wiper drive part 7 Lower reinforcement member 7a Front end part 7b Rear end part 8 Fixation Bracket 9 Upper reinforcing member 9a Front end portion 9b Rear end portion 11 Cowl portion 41 Panel upper portion 42 Panel lower portion 42a Bending portion 42b Curved portion 42c Vertical bead portion 51 Bead portion W Joint portion Z Annular structure portion

Claims (3)

A cowl portion extending upward from the upper end of the dash panel and supporting the lower end of the front window glass; and a cowl front panel extending from the upper end of the dash panel to the front of the vehicle. In the vehicle front part structure in which the wiper driving part for driving the wiper is arranged in
The wiper driving unit is fixed to the upper surface of the cowl front panel via a fixing bracket,
A lower reinforcing member that supports the cowl front panel from the vehicle lower side is disposed below the cowl front panel, and the lower reinforcing member extends to a front end portion of the cowl front panel. Provided across the junction between the panel and the dash panel,
The vehicle front structure, wherein the fixing bracket and the lower reinforcing member are arranged at positions overlapping in the vehicle vertical direction with the cowl front panel interposed therebetween. In the position close to the lower reinforcing member in the vehicle both width direction and in a position opposite to the wiper drive unit includes an upper reinforcing member for connecting the cowl top panel and the cowl front panel is disposed, said The upper reinforcing member and the lower reinforcing member are fixed to the tip portion of the cowl front panel, while the cowl top panel is provided with a bent portion extending in the vehicle width direction. The vehicle front part structure according to claim 1, wherein the vehicle front part structure is fixed to a lower side of the bent part. The fixed bracket is fixed to a position at the rear of the vehicle with respect to a front end portion of the cowl front panel to which the upper reinforcing member and the lower reinforcing member are fixed in a side view of the vehicle. vehicle front structure according to 2.

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