JP4998160B2 - Body front structure - Google Patents

Description

  The present invention relates to a vehicle body front structure, and more particularly to a structure of a front wheel house.

As a conventional vehicle body front structure, Patent Document 1 discloses that the air passage opening formed in the fender liner is disposed at a position away from the air intake duct, thereby preventing intake of water and mud. The structure is described.
Japanese Patent Laid-Open No. 2003-104241

  However, Patent Document 1 does not consider the water mass that enters from the front opening and runs up the upper surface of the mudguard, and it is necessary to prevent such water mass from being sucked.

  Also, a water mass discharge slit is formed in the lower front of the mudguard so that the water mass that has entered from the front opening can escape from the slit to the wheelhouse during submersion when more than half of the wheel is submerged. There is also a structure that prevents the upper surface portion from running up. However, in this case, there is an inconvenience that water droplets due to tire rotation enter through the slits and run up the upper surface of the mudguard and are sucked from the air intake port during normal rainy weather driving not during flooding.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to realize a vehicle body front part structure that prevents a water mass that has entered from a front opening from running up the upper surface of the mudguard.

  In order to solve the above-described problems and achieve the object, a first embodiment according to the present invention includes a fender panel and a front bumper that form a front wheel arch, a mud guard that covers a front-rear circumferential surface portion of the front wheel house, It has a splash shield that divides the front wheel house and the engine room, and has a vehicle body front structure in which an engine intake port is disposed in a space between the mud guard and the fender panel. The vehicle outer end is fixed to the fender panel and the wheel arch portion of the front bumper, and the upper portion of the vehicle inner end is fixed to the vehicle body apron portion inside the wheel house, while the lower portion is against the splash shield. It is adjacent to the vehicle width direction and can be displaced rearward with respect to the splash shield, With the deformation due to the displacement to form a gap between the exterior surface portion of the splash shield.

  According to this embodiment, the water mass that has entered from the front opening presses and deforms the mudguard and is discharged from the gap formed between the splash shield and the inside of the wheel house during flooding (test). This prevents the mass from running up the upper surface of the mudguard and prevents the water mass from being sucked from the intake port in the fender. In addition, the water mass discharge slit formed at the lower front of the mudguard can be miniaturized and reduced to the minimum necessary, or even completely eliminated. It is possible to prevent the inconvenience of being sucked from the fender intake port through the slit.

  In the second embodiment, a flange portion that protrudes rearward of the vehicle body is formed on the inner end portion of the mud guard along the vehicle outer surface portion of the splash shield. Thereby, it is possible to prevent water splash due to tire rotation from entering the upper surface of the mudguard from the gap between the rear edge of the mudguard and the splash shield.

  In the third mode, the rear edge portion of the mud guard on the vehicle inner end portion is located behind the intersection with the front extension line of the front wheel inner side surface during maximum steering. Thereby, the space | gap between the rear edge part of a mud guard and a splash shield can be arrange | positioned back from the area | region where the water splash by a tire rotation hits, and the penetration | invasion of the water mass from a space | gap to a mud guard upper surface part can be prevented.

  According to the present invention, it is possible to realize a vehicle body front portion structure that prevents a phenomenon that a water mass entering from the front opening runs up the upper surface of the mudguard.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  The embodiment described below is an example as means for realizing the present invention, and the present invention can be applied to a modified or modified embodiment described below without departing from the spirit of the present invention.

  FIG. 1 to FIG. 6 are views showing the structure of the front part of the vehicle body and the vicinity of the left front wheel house.

  As shown in FIGS. 1 to 6, in this embodiment, a fender intake port 15 that leads to an engine (not shown) is provided in the vicinity of a fender panel 11 and a front bumper 12 that form a wheel arch of the front wheel 1. This is a structure for preventing inhalation of water blocks such as water and mud from the fender inlet 15.

  The front portion of the vehicle body includes a fender panel 11 and a front bumper 12 that form the front wheel arch, a mud guard 13 that covers a front and rear circumferential surface portion of the front wheel house, and a splash shield 14 that partitions the front wheel house and the engine room. The fender intake port 15 is open to the outside of the vehicle width (left side) in the space between the mudguard 13 and the fender panel 11.

  The fender inlet 15 is connected to an air cleaner box 17 via a labyrinth resonator 16. The labyrinth resonator 16 has an internal air passage configured in a maze shape, and has a function of preventing water blocks sucked from the fender intake port 15 from entering the engine. The air cleaner box 17 is disposed near the front end of the mudguard 13 and above the engine. In addition, even if the labyrinth resonator 16 is interposed, it is impossible to prevent intrusion of all water masses, so the structure of this embodiment is effective.

  An under cover 18 is disposed at the lower part of the engine room, a sub frame 19 is disposed behind the under cover 18, and a front side frame 20 extends in the vehicle body front-rear direction at the left and right sides of the vehicle body. The sub frame 19 and the front side frame 20 support the front wheel suspension member 21.

  The mud guard 13 is made of an elastically deformable material, and includes a front guard panel 13A and a rear guard panel 13B. The vehicle outer end 13a of the mudguard 13 is fixed to the wheel arch portions 11a, 12a of the fender panel 11 and the front bumper 12 with screws or the like, and the upper edge of the vehicle inner end 13b is the front wheel. It is coupled to the vehicle body apron portion 22 inside the wheel house.

  Further, the lower portion of the vehicle inner end portion 13b of the mudguard 13 is adjacent to the vehicle width direction so as to be positioned on the vehicle outer side from the front end edge portion 14a of the splash shield 14, and is displaced rearward of the splash shield 14 relative to the vehicle body. It is possible. The mud guard 13 forms a gap t between the splash shield 14 and the outer surface portion of the splash shield 14 (lower portion of the front end edge portion) due to elastic deformation caused by the rearward displacement of the vehicle body (FIG. 7A). reference). For example, the gap t is formed in a range of 15 to 20 mm in the vehicle width direction and 200 to 250 mm upward. In other words, the lower part of the vehicle inner side end portion 13b of the mud guard 13 is not fastened to the splash shield 14 in this gap forming range. On the other hand, the upper part (above 200-250 mm) of the mud guard 13 and the splash shield 14 is fastened to each other by fastening means such as grommets.

  In addition, a water mass discharge slit 23 is formed in the lower part of the front surface of the mud guard 13, and the water mass that has entered from the front opening is mud guard 13 so as to discharge the water mass from the slit 23 toward the wheel house during submersion traveling. Prevents running up the top surface.

  Further, since the water mass that has entered from the front opening can be discharged into the wheel house from the gap t between the mudguard 13 and the splash shield 14, the water mass discharge slit 23 can be miniaturized and reduced to the minimum necessary. It is possible to abolish it at all. As a result, as shown in FIG. 7 (d), during normal rainy driving, the rainwater DL accumulated on the ground GL becomes mist-like water droplets with a large particle size by the rotation of the front wheel 1 and fills the wheel house. The inconvenience that these water splashes are sucked from the fender inlet 15 through the water mass discharge slit 23 can be prevented.

  As shown in FIG. 7 (a), a flange portion 24 projecting rearward of the vehicle body is formed at the vehicle inner end portion of the mud guard 13 along the vehicle outer surface portion of the splash shield 14 in the vertical direction. The flange portion 24 overlaps the front end edge portion 14a of the splash shield 14 by a predetermined distance (10 mm or more) in the longitudinal direction of the vehicle body. Thereby, it is possible to prevent water droplets due to tire rotation from entering the upper surface portion of the mudguard 13 from the gap t between the mudguard rear edge portion 13c and the splash shield 14.

  Further, as shown in FIG. 7B, the mudguard rear edge 13c is rearward (for example, 20 mm or more) from the intersection L1 with the front extension line L of the front wheel inner side surface 1a (inner side tread) during maximum steering. ). Thereby, since the space | gap t between the mudguard rear edge part 13c and the splash shield 14 is arrange | positioned behind the area | region where the water splash by a tire rotation hits, the penetration | invasion of the water from the space | gap t can be prevented.

  According to the above embodiment, the water block that has entered from the front opening presses the mud guard 13 and is discharged into the wheel house from the gap t formed between the splash shield 14 and the mud guard 13. It is possible to prevent a water mass running up the upper surface of the air from being sucked from the fender intake port 15. On the other hand, as shown in FIG. 7 (c), conventionally, the inner end 13b 'of the mudguard 13' is located on the inner side of the front end edge 14a 'of the splash shield 14', and the vertical direction Therefore, even if the mudguard 13 ′ is pressed by a water mass, no deformation that forms a gap with the splash shield 14 occurs.

It is a vehicle body front part structure of the embodiment according to the present invention, and is a plan view showing the structure when the vicinity of the left front wheel house is cut at a predetermined height. It is a vehicle body front part structure of the embodiment according to the present invention, and is a plan view showing the structure when the vicinity of the left front wheel house is cut at a predetermined height. 1 is a plan view showing a structure of a vehicle body front portion according to an embodiment of the present invention when a vicinity of a left front wheel house is cut at a predetermined position in a vehicle width direction. It is a vehicle body front part structure of an embodiment concerning the present invention, and is a figure showing the structure when the left front wheel wheel house neighborhood is seen from diagonally below. 1 is a view showing a structure of a vehicle body front portion according to an embodiment of the present invention when the front of a left front wheel house is cut at a predetermined position in the vehicle longitudinal direction. 1 is a front view of a vehicle body structure according to an embodiment of the present invention, and is an enlarged view of the front of a left front wheel house. It is a figure explaining the structure and function (a) of the mudguard and splash shield of this embodiment, the conventional structure (c), and the problem (d) of water splashes when traveling in the rain.

Explanation of symbols

1 Front Wheel 11 Fender Panel 12 Front Bumper 13 Mudguard 14 Splash Shield 15 Fender Inlet 16 Labyrinth Resonator 17 Air Cleaner Box 18 Undercover 19 Subframe 20 Front Side Frame 21 Front Wheel Suspension Member 22 Car Body Apron 23 Water Mass Extrusion Slit 24 Flange Part

Claims (3)

A fender panel and a front bumper that form a front wheel arch, a mud guard that covers a front-rear circumferential surface portion of the front wheel house, and a splash shield that partitions the front wheel house and the engine room, the mud guard and the fender panel The vehicle body front structure in which the engine intake is arranged in the space between,
The mudguard has an outer end fixed to the wheel arch portion of the fender panel and the front bumper, and an upper portion of the inner end of the vehicle is fixed to an apron portion inside the wheel house, while a lower portion is the splash It is adjacent to the shield in the vehicle width direction and can be displaced rearward with respect to the splash shield, and a gap is formed between the splash shield and the outer surface of the vehicle according to the deformation caused by the displacement. A vehicle body front structure characterized by:   2. The vehicle body according to claim 1, wherein a flange portion that protrudes rearward of the vehicle body is formed at the vehicle inner end portion of the mudguard along the vehicle outer surface portion of the splash shield. Front structure.   3. The vehicle body front structure according to claim 1, wherein a rear edge portion of the vehicle inner end portion of the mud guard is located behind an intersection with a front extension line of a front wheel inner side surface portion during maximum steering.

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