JP2009029324A - Partition structure of engine room - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a partition structure of an engine room which can efficiently absorb a load input to the engine room. <P>SOLUTION: The partition structure of the engine room comprises a partition 10 in a state of being erected in the roughly vertical direction having an upper end 10b which is brought in contact with or close to a feed panel 6 in the engine room 1 of a vehicle. The partition 10 is formed of a flexible member, and a rib 20 extending in the vehicle vertical direction is formed at the rear surface 14 side of a pressure receiving surface 13 for receiving the load input to the engine room 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a partition structure for an engine room in which a partition wall that stands up in a substantially vertical direction and has an upper end abutting against or close to a hood panel is provided in a vehicle engine room.

2. Description of the Related Art Conventionally, an engine that stands in a substantially vertical direction in an engine room of a vehicle and that has an upper end abutting against or close to a hood panel that covers the engine room is partitioned by the partition. A partition structure of a room is known (see, for example, Patent Document 1 and Patent Document 2).
JP-A-10-324267 JP-A-11-321708

  By the way, in the partition structure of the engine room described above, when a load is input from the upper front side of the engine room, there is a possibility that the absorption efficiency of the input load may be reduced due to a reaction force by the partition wall.

  Therefore, an object of the present invention is to provide a partition structure for an engine room that can efficiently absorb the load input to the engine room.

  In order to solve the above problems, the present invention is a partition structure of an engine room in which a partition wall that stands in a substantially vertical direction and whose upper end portion is in contact with or close to a hood panel is provided in the engine room of a vehicle. The partition wall is formed of a flexible member, and a rib extending in the vehicle vertical direction is provided on the back side of the pressure receiving surface that receives a load that is input to the engine room along an angle inclined with respect to the vertical direction. This is the main feature.

  According to the present invention configured as described above, when a load is input to the engine room along an angle inclined with respect to the vertical direction, bending deformation stress acts on the rib provided on the back side of the pressure receiving surface, The rib that supports the partition formed by the flexible member can be easily buckled. Thereby, it becomes possible to reduce the reaction force of a partition and to absorb an input load efficiently.

  BEST MODE FOR CARRYING OUT THE INVENTION The best embodiment of the partition structure for an engine room according to the present invention will be described with reference to the drawings. In addition, the arrow X appropriately shown in the drawing indicates the front of the vehicle, the arrow Y indicates the vehicle outer side, and the arrow Z indicates the upper side of the vehicle.

  1 shown in FIG. 1 is an engine room formed in the front part of a vehicle such as an automobile. The engine room 1 includes a pair of front side members 2 and 2 that are disposed on both sides in the vehicle width direction and extend in the vehicle front-rear direction, and a pair of strut towers 3 that are formed outside the front side members 2 and 2 respectively. , 3 and a pair of hood ridge panels 4, 4, etc. that are arranged on the vehicle outer side and extend in the vehicle front-rear direction of each strut tower 3, 3.

  In addition, the engine room 1 is provided with a dash panel 5 at the rear and is partitioned from a vehicle compartment (not shown).

  Further, the upper side of the engine room 1 is covered with a hood panel 6 so as to be freely opened and closed.

  A pair of partition walls 10 are provided on the left and right sides of the engine room 1.

  The partition wall 10 is formed in a band plate shape by a flexible member having flexibility such as rubber. And as shown in FIG. 3, the lower end part 10a is attached to the upper end part 7a of the leg frame 7 formed with the hard plastic, and has stood up in the substantially perpendicular direction. Here, the end portion 10 c located outside the vehicle is attached to a bracket 7 b provided on the leg frame 7.

  Further, the length (height) of the partition wall 10 in the vertical direction of the vehicle is set such that the upper end portion 10b is in contact with or close to the hood panel 6 when the hood panel 6 is closed ( (See FIG. 6 (a)).

  In addition, the partition wall 10 extends inward in the vehicle width direction along the side of the strut tower 3 from the vicinity of the hood ridge panel 4, then curves toward the dash panel 5 toward the rear of the vehicle, and again in the vicinity of the dash panel 5. It is curved along the inner side in the vehicle width direction. As a result, as shown in FIG. 4, the partition wall 10 meanders over the entire length in the longitudinal direction, and is curved in an R shape when viewed in plan.

  As shown in FIG. 3, the middle portion of the partition wall 10 in the vertical direction of the vehicle includes a first bead portion 11 as a weak portion extending in the horizontal direction and a weak portion positioned below the first bead portion 11. The second bead portion 12 is formed.

  The first bead portion 11 and the second bead portion 12 each have a bead shape protruding toward the front of the vehicle, and each extend substantially parallel to the upper end portion 10 b of the partition wall 10.

  Here, the total length of the second bead portion 12 is shorter than the total length of the first bead portion 11 according to the length (height) of the partition wall 10 in the vehicle vertical direction.

  Further, as shown in FIG. 3, the bead shape of the first and second bead portions 11 and 12 is such that the slope of the upper side of the most protruding top portions 11a and 12a is gentler than the slope of the lower side portion. Yes.

  Furthermore, a large number of ribs 20 extending in the vehicle vertical direction are provided on the back surface 14 side of the pressure receiving surface 13 of the partition wall 10.

  Here, the “pressure receiving surface 13” is a surface that receives a load that is input to the engine room 1 along an angle inclined with respect to the vertical direction. Here, a surface that receives a load that is input from the upper front side of the engine room 1. It faces the vehicle front side.

  Moreover, the back surface 14 is the back surface side of the pressure receiving surface 13, and faces the vehicle rear side here.

  The rib 20 is formed integrally with the back surface 14 of the partition wall 10 and is formed of the same flexible member as the partition wall 10.

  The rib 20 intersects the first bead portion 11 and the second bead portion 12, and intersects the first bead portion 11 with a plurality of large ribs 21 extending to the lower end portion 10 a of the partition wall 10. And a plurality of small ribs 22 extending to the middle portion of the partition wall 10 in the vehicle vertical direction.

  The plurality of large ribs 21 and the plurality of small ribs 22 are alternately arranged along the longitudinal direction of the partition wall 10.

  As shown in FIG. 5A, the large rib 21 gradually protrudes from the partition wall 10 toward the lower side, and protrudes forward of the vehicle along each of the first and second bead portions 11 and 12 protruding forward of the vehicle. The first and second protrusions 21b and 21c are provided. Further, as shown in FIG. 5B, the large rib 21 is provided in an inclined state without being orthogonal to the back surface 14 of the partition wall 10.

  The lower end portion 21 a of the large rib 21 is fitted to a fitting portion 7 c formed on the upper end portion 7 a of the leg portion 7.

  On the other hand, as shown in FIG. 5A, the small rib 22 has a protrusion 22a protruding forward of the vehicle along the first bead portion 11 protruding forward of the vehicle, and as shown in FIG. 5B. In addition, it is provided in a state of being inclined without being orthogonal to the back surface 14 of the partition wall 10.

  Next, the operation of the partition structure of the engine room according to the present invention will be described.

  First, when the hood panel 6 covering the engine room 1 is closed, a load is input to the engine room 1 substantially along the vertical direction as indicated by an arrow α in FIG.

  The input load α is input to the partition wall 10 along a substantially vertical direction, and the partition wall 10 receives a compressive stress from above.

  Here, since the rib 10 is provided on the partition wall 10 so as to extend in the vehicle vertical direction, the partition wall 10 is reinforced against compressive stress from above, that is, normal stress, and has sufficient strength against the input load α. Have.

  Therefore, when the hood panel 6 is closed, the partition wall 10 can be kept upright without being bent or buckled, and the upper end portion 10b of the partition wall 10 and the hood panel 6 are blocked. Therefore, sufficient sound insulation and heat insulation can be ensured. The rib 20 can also prevent the partition wall 10 from being bent by its own weight.

  And when the load of the engine room 1 is input from the front upper side of the vehicle, the load is input along the direction inclined forward with respect to the vertical direction as indicated by an arrow β in FIG.

  The input load β is input to the partition wall 10 along the direction inclined forward with respect to the vertical direction. For this reason, the partition wall 10 receives bending deformation stress from above, that is, so-called tendon stress. Since the input load β is input from the front of the vehicle, the pressure receiving surface 13 that is a surface that receives the load of the partition wall 10 faces the front of the vehicle.

  Here, since the partition wall 10 and the rib 20 are formed of a flexible member, the partition wall 10 and the rib 20 can be easily buckled against bending deformation stress, and the reaction force by the partition wall 10 against the input load β is reduced, so that the input load is reduced. β can be absorbed efficiently.

  In particular, since the rib 20 is provided on the back surface 14 side of the pressure-receiving surface 13 of the partition wall 10, the rib 20 is deformed in the direction in which it is compressed by the input load β, and this rib 20 inhibits the buckling deformation of the partition wall 10. There is nothing.

  Further, first and second bead portions 11 and 12 extending in the horizontal direction are formed in the vehicle vertical direction intermediate portion of the partition wall 10.

  For this reason, when the input load β is input to the partition wall 10, the first and second bead portions 11 and 12 serve as a trigger for buckling deformation to induce the buckling of the partition wall 10. The deformation is further facilitated, and the absorption efficiency of the input load β can be improved.

  In particular, the first and second bead portions 11 and 12 have a bead shape protruding toward the front of the vehicle. Therefore, the bulkhead 10 can be buckled with respect to the input load β input from the front upper side of the vehicle so that the bulkhead 10 is surely tilted toward the rear of the vehicle. It is possible to reduce the reaction force.

  Further, since the first and second bead portions 11 and 12 are formed substantially parallel to the upper end portion 10b of the partition wall 10, when the input load β acts on the partition wall 10, the partition wall 10 becomes longitudinal. It will buckle almost uniformly along. For this reason, it becomes possible to further reduce the reaction force of the partition wall 10 and to improve the absorption efficiency of the input load β.

  Since the first and second bead portions 11 and 12 are provided in order along the vehicle vertical direction of the partition wall 10, even if the length (height) of the partition wall 10 in the vehicle vertical direction is large, the seat is surely seated. It is possible to bend.

  Further, here, since the pressure receiving surface 13 of the partition wall 10 faces the front of the vehicle, a great effect is exerted on the input load β input from the upper front side of the vehicle to the engine room 1 arranged in the front portion of the vehicle. be able to.

  Further, the large rib 21 and the small rib 22 of the rib 20 are provided in an inclined state with respect to the direction perpendicular to the back surface 14 of the partition wall 10. Thereby, the bending deformation stress acting on each large rib 21 and the small rib 22 can be further increased, and the reaction force of the partition wall 10 can be further reduced.

  In addition, since the plurality of large ribs 21 and the plurality of small ribs 22 are alternately arranged along the longitudinal direction of the partition wall 10, the rigidity of the partition wall 10 can be appropriately maintained and at the same time the reaction force can be sufficiently reduced. Can do. That is, appropriate control of the rigidity of the partition 10 can be easily performed.

  In the above-described embodiment, the large rib 22 gradually protrudes from the partition wall 10 as it goes downward, and the large rib 22 has a shape in which the lower part is thicker than the upper part.

  Therefore, the strength of the lower end portion 10a is higher than that of the upper end portion 10b, and the partition wall 10 is more likely to buckle and deform from the upper end portion 10b side, thereby making it possible to sufficiently reduce the reaction force.

  Further, since the partition wall 10 is curved so as to meander over the entire length in the longitudinal direction when viewed from above, the self-supporting force of the partition wall 10 is increased, and a gap is generated between the partition panel 10 and the hood panel 6 without being bent by its own weight. Can be prevented.

  Furthermore, in the above-described embodiment, the bead shapes of the first and second bead portions 11 and 12 are inclined more gently on the upper side of the top portions 11a and 12a than on the lower side portion. Therefore, a large surface for receiving the input load β input from the upper front side of the partition wall 10 can be secured, and the partition wall 10 can be buckled more easily. In addition, it is possible to smoothly perform die cutting when the partition wall 10 is formed.

  As mentioned above, although embodiment concerning this invention has been explained in full detail with drawing, a concrete structure is not restricted to the above-mentioned embodiment. Design changes and the like within the scope not departing from the gist of the present invention are included in the present invention.

  For example, in the above-described embodiment, the first and second bead portions 11 and 12 protruding forward of the vehicle are provided as the fragile portions. However, the present invention is not limited to this, and in the intermediate portion of the partition wall 10 in the vehicle downward direction. Any configuration that changes the rigidity is acceptable.

  That is, small holes may be continuously formed as the fragile portion along the horizontal direction, the thickness of the partition wall 10 may be reduced, or the material may be changed.

  Moreover, in the above-mentioned embodiment, although the pressure receiving surface 13 faces the vehicle front, this pressure receiving surface 13 may face the vehicle rear. In this case, the rib 20 is provided on the side facing the front of the vehicle.

  As a result, when a load is input from the upper rear side of the partition wall 10, it is possible to reduce the reaction force of the partition wall 10 and improve the load absorption efficiency. This is particularly effective when the engine room 1 is formed at the rear of the vehicle.

  Further, the set number of the first and second bead portions 11 and 12 which are weak portions can be appropriately increased or decreased according to the length (height) of the partition wall 10 in the vehicle vertical direction.

  Thereby, the rigidity of the partition 10 becomes more appropriate, and the load absorption efficiency can be further improved.

It is a perspective view which shows the engine room provided with the partition structure of the engine room which concerns on this invention. It is a perspective view which shows the back side of the partition arrange | positioned at the right side among the partitions shown in FIG. It is a side view which shows the partition shown in FIG. It is a top view which shows the partition shown in FIG. (A) is the enlarged view of the A section in FIG. 2, (b) is BB sectional drawing in FIG. 5 (a). (A) is explanatory drawing which shows the case where the load is input along the substantially vertical direction in the partition structure of the engine room which concerns on this invention, (b) is a load along the angle inclined with respect to the vertical direction. It is explanatory drawing which shows the case where it inputs.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Engine room 6 Food panel 10 Bulkhead 10b Upper end part 13 Pressure receiving surface 14 Back surface 20 Rib

Claims (9)

The partition structure of the engine room provided in the engine room of the vehicle, the partition wall standing up in the substantially vertical direction and having the upper end abutting or approaching the hood panel,
The partition wall is formed of a flexible member, and a rib extending in the vehicle vertical direction is provided on the back side of the pressure receiving surface that receives a load that is input to the engine room along an angle inclined with respect to the vertical direction. The partition structure of the engine room characterized by the above.   2. The partition structure for an engine room according to claim 1, wherein a weakened portion extending in a horizontal direction is formed in the partition wall.   The partition structure of an engine room according to claim 2, wherein the weakened portion has a bead shape protruding toward the front of the vehicle.   The engine room partition structure according to claim 2 or 3, wherein the fragile portion is formed substantially parallel to an upper end portion of the partition wall.   The engine room partition structure according to any one of claims 1 to 4, wherein a plurality of the fragile portions are provided along a vehicle vertical direction.   The partition structure for an engine room according to any one of claims 1 to 5, wherein the pressure receiving surface faces the front side of the vehicle.   The partition structure for an engine room according to any one of claims 1 to 6, wherein the rib is provided in an inclined state with respect to a direction perpendicular to the surface of the partition wall.   The rib has a large rib that intersects the fragile portion and extends to a lower end portion of the partition wall, and a small rib that intersects the fragile portion and extends to an intermediate portion of the partition wall, The partition structure for an engine room according to any one of claims 1 to 7, wherein the large ribs and the small ribs are alternately arranged. The partition structure for an engine room according to any one of claims 1 to 8, wherein the partition wall is curved so as to meander over the entire length in the longitudinal direction when viewed from above.

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