JP2010052482A - Cowl cover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a cowl cover absorbing impact, suppressing deformation when assembled, and improving a degree of freedom in a shape. <P>SOLUTION: This cowl cover 10 is provided with a cowl top cover 11 with one end attached to a windshield 40 and the other end arranged in the lower side of a hood 30, and a vertical wall part 13 extended downward from the lower surface of the cowl top cover 11. In the vertical wall part 13, a plurality of ribs 20, 21, 22 extended in a vertical direction are arranged in a vehicle width direction, thereby making stress due to a load F concentrated on a bending planned part C extended across the vehicle width direction in the vertically intermediate part of the vertical wall part 13 when the load F is input from above the vertical wall part 13. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a cowl cover.

Conventionally, as a cowl cover, it has a resin cowl top cover and a vertical wall portion made of resin, and a groove extending along the vehicle width direction is provided at the center of the vertical wall portion so that the hood can be used as a cowl cover. It is known that when a load is input, a vertical wall portion is bent with a groove as a base point so as to absorb shock (see, for example, Patent Document 1).
JP 2002-46649 A

  However, in such a conventional technique, the shape of the cowl cover is limited because the groove extending in the vehicle width direction is formed in the center portion of the vertical wall portion, and it is difficult to improve the shape flexibility. It was. Furthermore, since the rigidity of the cowl cover is lowered by providing the groove, the cowl cover may be deformed when assembled to the vehicle.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cowl cover capable of absorbing shocks, which can suppress deformation during assembly and can improve the degree of freedom of shape. To do.

  The invention according to claim 1 is a cowl top cover having one end attached to the windshield and the other end disposed below the hood, and a vertical wall portion extending downward from the lower surface of the cowl top cover. A plurality of ribs extending in the vehicle width direction on the vertical wall portion, and when a load is input from above the vertical wall portion, The stress due to the load concentrates on the planned bending portion extending in the vehicle width direction at the intermediate portion in the vertical direction of the portion, and when a load of a predetermined value or more is input from above the vertical wall portion, The vertical wall portion is bent with the bent portion as a base point.

  According to a second aspect of the present invention, in the cowl cover according to the first aspect, the plurality of ribs extend from at least one of the upper end and the lower end of the vertical wall portion to the planned bending portion. It is characterized by that.

  According to a third aspect of the present invention, in the cowl cover according to the first aspect, the plurality of ribs extend from the upper end to the lower end of the vertical wall portion, and are arranged in the planned bending portion of the rib. It is characterized in that a notch portion is provided in the area.

  According to a fourth aspect of the present invention, in the cowl cover according to any one of the first to third aspects, the rib includes a front rib that projects from the front side of the vertical wall portion, and the vertical wall portion. And a rear rib protruding at a position different from the front rib.

  According to a fifth aspect of the present invention, in the cowl cover according to any one of the first to fourth aspects, a slit is provided intermittently in the vehicle width direction in the planned bending portion of the vertical wall portion. It is characterized by being.

  According to the first aspect of the present invention, by providing a plurality of ribs extending in the vertical direction on the vertical wall portion in the vehicle width direction, when a load is input from above the vertical wall portion, the vertical wall The stress due to the load is concentrated on the planned bending portion extending in the vehicle width direction at the intermediate portion in the vertical direction of the portion, and when a load of a predetermined value or more is input from above the vertical wall portion, Since the wall portion is bent from the planned bending portion, a cowl cover capable of absorbing an impact without impairing the rigidity of the vertical wall portion can be obtained. Therefore, the cowl cover is prevented from being deformed when the vehicle is assembled, and the assembly of the cowl cover to the vehicle can be improved. Moreover, since it becomes unnecessary to provide a groove part in a vertical wall part, the shape freedom degree of a cowl cover can be aimed at.

  According to the second aspect of the present invention, the stress due to the load is concentrated on the planned bending portion by extending the plurality of ribs from at least one of the upper end and the lower end of the vertical wall portion to the planned bending portion. It becomes like this. That is, a cowl cover that can absorb an impact with a simpler configuration can be obtained.

  According to the invention described in claim 3, the plurality of ribs are extended from the upper end to the lower end of the vertical wall portion, and a notch portion is provided at a portion arranged in the planned bending portion of the rib. Thus, stress due to the load is concentrated on the planned bending portion. That is, a cowl cover that can absorb an impact with a simpler configuration can be obtained.

  According to the fourth aspect of the present invention, the rib is protruded at a position different from the front rib and the front rib protruding from the front side of the vertical wall portion and the rear side of the vertical wall portion. By constituting with the rear ribs, the number of base points of the stress concentration portion can be increased without narrowing the pitch of the ribs formed on the vertical wall portion. Therefore, it is possible to suppress the deterioration of the rib forming workability due to the narrowing of the rib pitch, and to reliably bend the vertical wall portion from the planned bending portion without impairing the moldability of the cowl cover. It becomes like this.

  According to the fifth aspect of the present invention, since the slits are intermittently provided in the vertical wall portion, when the resin is injected into the mold at the time of forming the cowl cover, the flow of the resin is hindered by the slit forming portion in the mold. Therefore, it is possible to obtain a cowl cover that can be bent easily while being suppressed as much as possible. That is, the vertical wall portion can be reliably bent from the planned bending portion without impairing the moldability of the cowl cover.

  Embodiments of a vehicle body structure according to the present invention will be described below in detail with reference to the drawings.

  (First Embodiment) FIG. 1 is a side view showing a state where a cowl cover according to this embodiment is attached to a vehicle body, FIG. 2 is a perspective view showing the cowl cover, and FIG. 3 is an enlarged perspective view of a main part of the cowl cover. 4 and 4 are side views showing a state where the cowl cover is deformed when a load is input to the hood.

  The cowl cover 10 is a member that extends in the vehicle width direction between the windshield 40 and the hood 30 that covers the engine room E. The cowl cover 10 is formed of a relatively rigid resin material (for example, ABS resin, modified PPO resin).

  The cowl cover 10 is formed with a mesh-like air introduction hole 10a. The air introduction hole 10a is used as an air introduction hole when, for example, outside air is introduced into the vehicle via an air conditioner (not shown).

  Further, a wiper mounting portion 10b for mounting a wiper is formed on the upper portion of the cowl cover 10.

  In the present embodiment, the cowl cover 10 has one end attached to the windshield 40 and the other end disposed below the hood 30 and a lower side from the lower surface of the front end of the cowl top cover 11. And a vertical wall portion 13 extending toward the surface.

  Specifically, a holding piece 11a having a substantially L-shaped cross section is provided on the rear surface side of the rear end portion of the cowl top cover 11, and the rear end portion of the cowl top cover 11 and the holding piece 11a are connected to each other. A lower edge of the windshield 40 is sandwiched between them. In addition, an extension portion 11 b extending toward the front of the vehicle is provided at the front end portion of the cowl top cover 11 so as to be disposed below the hood 30. In addition, a seal member 60 that seals between the lower portion of the hood 3 is provided on the upper portion of the extending portion 11.

  On the other hand, a shielding wall 12 is formed at the front end portion of the cowl top cover 11, and this shielding wall 12 has the above-described vertical wall portion 13 extending obliquely upward and forward, a mounting hole 15, and a bolt 70. And a bottom wall portion 14 attached to the vehicle body panel 50 by being inserted into the attachment hole 15.

  Here, in the present embodiment, the load F is input from above the vertical wall portion 13 by providing the vertical wall portion 13 with a plurality of ribs 20, 21, and 22 extending in the vertical direction in the vehicle width direction. At this time, the stress due to the load F is concentrated on a planned bending line (bending planned portion) C extending in the vehicle width direction at a substantially central portion in the vertical direction of the vertical wall portion 13 (intermediate vertical portion of the vertical wall portion 13). Like to do.

  Specifically, a front upper rib (front side) that protrudes in front of the vertical wall portion 13, extends from the upper end of the vertical wall portion 13 toward the planned bending line C, and has one end positioned on the planned bending line C. (Rib) 20 and a front lower rib (front side) projecting forward of the vertical wall portion 13 and extending from the lower end of the vertical wall portion 13 toward the planned bending line C, with one end positioned at the planned bending line C. Rib) 21 and a rear rib 22 that protrudes from the rear of the vertical wall portion 13 and extends from the upper end of the vertical wall portion 13 toward the planned bending line C, with one end positioned at the planned bending line C. Are formed in the vertical wall portion 13 in the vehicle width direction.

  And the stress concentration part 24 is formed in the vertical wall part 13 vicinity of the edge part located in the bending expected line C of the front side upper rib 20, the front side lower rib 21, and the rear side rib 22. FIG.

  In the present embodiment, the front upper rib 20 extends to the front end of the lower surface of the extension portion 11 b of the cowl top cover 11, and the front lower rib 21 extends to the front end of the upper surface of the bottom wall portion 14 of the shielding wall 12. The rear rib 22 is extended to the rear end of the lower surface of the cowl top cover 11 (the portion where the holding piece 11a is formed) so that the stress is further concentrated on the stress concentration portion 24. Yes.

  In the present embodiment, the front upper rib 20 and the front lower rib 21 are formed at the same position in the vehicle width direction, and the rear rib 22 is connected to the front upper rib 20 and the front lower rib 21 in the vehicle width direction. They are formed at different positions.

  Specifically, as shown in FIG. 3, a plurality of front upper ribs 20 and front lower ribs 21 are arranged at a pitch n in the vehicle width direction, and the rear ribs 22 are shifted by a pitch p in the vehicle width direction. A plurality of parts are arranged at a pitch m at the same site. In the present embodiment, the pitch n and the pitch m are the same pitch, and the pitch p is half of the pitch n. That is, the rear side rib 22 is formed at a position shifted from the front side upper rib 20 and the front side lower rib 21 by an anti-pitch in the vehicle width direction.

  Thus, by providing a plurality of stress concentration portions 24 on the planned bending line C of the vertical wall portion 13, when a load F of a predetermined value or more is input from above the vertical wall portion 13, the vertical wall portion 13 is bent with respect to the planned bending line C.

  This predetermined value is a value determined by appropriately setting the thickness of the vertical wall portion and the number of ribs. Note that this predetermined value is set to be lower than the magnitude of the load assumed to be applied when an object collides with the hood 30. Needless to say, it is necessary to set a load higher than that assumed in a normal use range, such as a load that acts when a person puts a hand on the hood 30 or places a load on the hood 30.

  According to the above configuration, when an obstacle rides on the rear end portion of the hood 30 from above and deforms downward, the load F is input to the vertical wall portion 13, and the stress of the load F is stress concentrated. Concentrate on part 24. At this time, when a load F of a predetermined value or more is input to the vertical wall portion 13, the vertical wall portion 13 is shown in FIG. 4 due to the stress concentration of the load F on the stress concentration portions 24 scattered on the planned bending line C. As shown, the bending is performed with the planned bending line C as a base point. In this way, by bending the vertical wall portion 13 with the planned bending line C as the base point, the impact energy is absorbed and the impact force on the obstacle is reduced.

  According to the embodiment described above, the load F is input from above the vertical wall portion 13 by providing the vertical wall portion 13 with the plurality of ribs 20, 21 and 22 extending in the vertical direction in the vehicle width direction. The stress due to the load F is concentrated on the planned bending line (scheduled bending portion) C extending in the vehicle width direction at the middle portion of the vertical wall portion 13 in the vertical direction, When the load F of a predetermined value or more is input from the above, the vertical wall portion 13 bends with the planned bending line C as the base point, thereby absorbing the impact without impairing the rigidity of the vertical wall portion 13. The cowl cover 10 which can be obtained can be obtained. Therefore, the cowl cover 10 is prevented from being deformed when the vehicle is assembled, and the assembly of the cowl cover 10 to the vehicle can be improved. Moreover, since it becomes unnecessary to provide a groove part in the vertical wall part 13, the freedom degree of the shape of the cowl cover 10 can be improved.

  Further, according to the present embodiment, the stress due to the load F is concentrated on the planned bending line C by extending the plurality of ribs 20, 21, 22 from the upper end and the lower end of the vertical wall portion 13 to the planned bending line C. Like to do. As a result, the cowl cover 10 capable of absorbing an impact can be obtained with a simpler configuration.

  Further, according to the present embodiment, the front side protrudes in front of the vertical wall portion 13, extends from the upper end of the vertical wall portion 13 toward the planned bending line C, and has one end positioned on the planned bending line C. An upper rib (front rib) 20 and a front side that protrudes in front of the vertical wall portion 13, extends from the lower end of the vertical wall portion 13 toward the planned bending line C, and has one end positioned on the planned bending line C A lower rib (front rib) 21 and a rear wall of the vertical wall portion 13 project from the upper end of the vertical wall portion 13 toward the planned bending line C, and one end is located at the planned bending line C. By forming a plurality of rear ribs 22 projecting at different positions from the front ribs 20 and 21 in the vehicle width direction on the vertical wall portion 13, the pitch n of each rib formed on the vertical wall portion 13 , M can be reduced without increasing the number of base points of the stress concentration portion 24. Therefore, it is possible to prevent the rib formability from deteriorating due to the narrowing of the rib pitches n and m, and to ensure that the vertical wall portion 13 is bent from the bending line C without damaging the formability of the cowl cover 10. It can be bent.

  Moreover, according to this embodiment, since it is not necessary to form a groove in the vertical wall portion 13, it is possible to prevent the resin fluidity from being deteriorated during the injection molding of the cowl cover 10. , Silver streak and the like can be suppressed. Therefore, there is also an advantage that the appearance of the cowl cover 10 can be improved.

  (Second Embodiment) FIG. 5 is a side view showing a state in which a cowl cover according to this embodiment is attached to a vehicle body. The cowl cover according to the present embodiment includes the same components as those of the first embodiment. Therefore, the same constituent elements are denoted by common reference numerals, and redundant description is omitted.

  The cowl cover 10A according to the present embodiment has a feature that a plurality of front ribs 26 projecting forward from the upper end to the lower end are formed on the vertical wall portion 13 at a pitch n in the vehicle width direction. This is different from the first embodiment, and other configurations are the same as those of the first embodiment.

  A cutout portion 26a is provided at a portion of the front rib 26 that is disposed on the planned bending line C, and a stress concentration portion 24 is formed in the vertical wall portion 13 by the cutout portion 26a.

  Also according to this embodiment described above, the same operations and effects as those of the first embodiment can be achieved.

  (Third Embodiment) FIG. 6 is a side view showing a state in which a cowl cover according to this embodiment is attached to a vehicle body. The cowl cover according to the present embodiment includes the same components as those of the first embodiment. Therefore, the same constituent elements are denoted by common reference numerals, and redundant description is omitted.

  The cowl cover 10B according to the present embodiment is different from the first embodiment in that the front upper rib is not provided in front of the vertical wall portion 13, and other configurations are the same as those in the first embodiment. is there.

  That is, the front rib provided in front of the vertical wall portion 13 extends from the lower end of the vertical wall portion 13 toward the planned bending line C, and only the front lower rib 21B whose one end is positioned on the planned bending line C. It has become.

  Also according to this embodiment described above, the same operations and effects as those of the first embodiment can be achieved.

  (Fourth Embodiment) FIG. 7 is a perspective view showing a cowl cover according to this embodiment. The cowl cover according to the present embodiment includes the same components as those of the first embodiment. Therefore, the same constituent elements are denoted by common reference numerals, and redundant description is omitted.

  The cowl cover 10C according to the present embodiment is different from the first embodiment in that the slit 23 is intermittently provided in the planned bending line C of the vertical wall portion 13 in the vehicle width direction. This is the same as in the first embodiment.

  Also according to this embodiment described above, the same operations and effects as those of the first embodiment can be achieved.

  In addition, according to the present embodiment, since the slits 23 are intermittently provided in the vertical wall portion 3, when the resin is injected into the mold at the time of forming the cowl cover, the resin flow is caused by the slit forming portion in the mold. It is possible to obtain a cowl cover that can be easily bent while suppressing the hindrance as much as possible. That is, the vertical wall portion 13 can be reliably bent at the base line of the planned bending line C without impairing the moldability of the cowl cover 10.

  The cowl cover according to the present invention has been described above by taking the above embodiment as an example. However, the present invention is not limited to the above embodiment, and various other embodiments can be adopted without departing from the gist of the present invention. Can do.

  For example, in the fourth embodiment, the configuration in which the slit is formed in the configuration of the first embodiment is illustrated, but the configuration in which the slit is formed in the second embodiment, the third embodiment, or other configurations is used. May be.

  In the third embodiment, only the front lower rib is provided as the front rib, but only the front upper rib may be provided as the front rib.

It is a side view which shows the state which attached the cowl cover concerning 1st Embodiment of this invention to the vehicle body. It is a perspective view which shows the cowl cover concerning 1st Embodiment of this invention. It is a principal part expansion perspective view of the cowl cover concerning 1st Embodiment of this invention. It is a side view which shows the state which the cowl cover deform | transformed when the load was input into the hood concerning 1st Embodiment of this invention. It is a side view which shows the state which attached the cowl cover concerning 2nd Embodiment of this invention to the vehicle body. It is a side view which shows the state which attached the cowl cover concerning 3rd Embodiment of this invention to the vehicle body. It is a perspective view which shows the cowl cover concerning 4th Embodiment of this invention.

Explanation of symbols

10, 10A, 10B, 10C Cowl cover 11 Cowl top cover 13 Vertical wall portion 20 Front upper rib (front rib)
21, 21B Front lower rib (front rib)
22 Rear side rib 23 Slit 24 Stress concentration part 26 Front side rib 26a Notch part 30 Hood 40 Windshield C Bending planned line (bending planned part)

Claims (5)

A cowl cover comprising: a cowl top cover having one end attached to the windshield and the other end disposed below the hood; and a vertical wall portion extending downward from the lower surface of the cowl top cover. ,
By providing a plurality of ribs extending in the vehicle width direction on the vertical wall portion in the vehicle width direction, when a load is input from above the vertical wall portion, a vehicle width direction is provided in the vertical middle portion of the vertical wall portion. So that the stress due to the load is concentrated on the planned bending portion extending over
A cowl cover characterized in that, when a load of a predetermined value or more is input from above the vertical wall portion, the vertical wall portion is bent with respect to the planned bending portion.   The cowl cover according to claim 1, wherein the plurality of ribs extend from at least one of the upper end and the lower end of the vertical wall portion to the planned bending portion.   The plurality of ribs extend from an upper end to a lower end of the vertical wall portion, and a cutout portion is provided at a portion arranged in the planned bending portion of the rib. The cowl cover described.   The rib includes a front rib projecting on the front side of the vertical wall portion and a rear rib projecting on the rear side of the vertical wall portion at a position different from the front rib. The cowl cover according to any one of claims 1 to 3, wherein   The cowl cover according to any one of claims 1 to 4, wherein a slit is provided intermittently in the vehicle width direction at the planned bending portion of the vertical wall portion.

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