JP2007055400A - Front structure of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a radiator effectively function even if the radiator is of a dynamic damper type by preventing a shroud panel from deformation even if a support for the radiator is located apart from a left and a right vertical wall across the vehicle width of the shroud panel. <P>SOLUTION: A first opening 11 is formed on the left of the shroud panel 3 from an upper member 5 and a lower member 7, a first vertical member 8 and an intermediate vertical member 10 where 11 a radiator 13 (a first cooling device) is installed. On the right of the shroud panel 3, a second opening 12 is formed from the upper member 5 and the lower member 7, a second vertical member 9 and an intermediate vertical member 10. The lower member 7 in its neighborhood of an inner mount hole 21 (the support) for supporting the radiator 13 is coupled with a bumper reinforcement 41 through a coupling bracket 51. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle front structure including a resin shroud panel to which a bumper reinforcement and a cooling device are attached.

  Conventionally, a vehicle front structure is known in which a bumper reinforcement is disposed behind a bumper face, and a resin shroud panel with a cooling device is disposed behind the bumper reinforcement. Yes.

  In such a vehicle front structure, for example, Patent Document 1 shows a stay that extends from the center in the vehicle width direction of the lower member of the shroud panel, branches into two, and the branch stay is connected to the upper member. ing. Thus, deformation of the resin shroud panel can be suppressed.

For example, Patent Document 2 discloses that a radiator is used as a dynamic damper by engaging seismic isolation rubber provided on a leg portion at the lower end of a radiator with a mount hole of a shroud panel.
JP 2004-237788 A JP 2002-225748 A

  Therefore, when the radiator is used as a dynamic damper as in the vehicle front structure of Patent Document 2, when the rigidity of the shroud panel is lowered, the shroud panel is deformed such as torsion, and the radiator is firmly supported. There was a problem that the radiator did not function sufficiently as a dynamic damper during engine idling.

  Such a problem is that when the radiator is provided over the entire vehicle width direction of the shroud panel as in Patent Document 1 and the support portion is provided in the vicinity of the left and right vertical wall portions, the load is supported by the vertical wall portions. However, when the radiator is supported unevenly on one side in the vehicle width direction of the shroud panel, the load cannot be sufficiently supported, which is a particular problem.

  The present invention has been made in view of such a point, and the object of the present invention is to provide a shroud even when the support portion of the radiator is located away from the left and right vertical wall portions in the vehicle width direction. The object is to enable the radiator to function effectively as a dynamic damper by preventing deformation such as twisting of the panel.

  In order to achieve the above object, according to the present invention, in the vehicle front structure in which the support portion on one side in the vehicle width direction of the cooling device is not provided near the vertical members on the left and right in the vehicle width direction of the shroud panel, A triangular reinforcing member is provided near the support portion on one side in the vehicle width direction.

  Specifically, in the invention of claim 1, a bumper reinforcement is disposed behind the bumper face, and a resin shroud panel to which a cooling device is attached is disposed behind the bumper reinforcement. The vehicle front part structure is intended.

The shroud panel connects the upper member, the lower member, the left and right first vertical members and the second vertical member that connect the left and right ends of both members in the vehicle width direction, and the middle of the upper member and the lower member in the vehicle width direction. The intermediate vertical member is integrally formed, and the first vertical member and the second vertical member are coupled to the bumper reinforcement,
The upper member and the lower member, and the first vertical member and the intermediate vertical member form a substantially rectangular first opening, and the lower member near the lower end of the intermediate vertical member corresponds to the first opening. A support portion is formed to support the leg portion at the lower end on the one side in the vehicle width direction of the first cooling device disposed,
A shroud panel corresponding to the substantially rectangular second opening formed by the upper member and the lower member, the second vertical member, and the intermediate vertical member is provided with a second cooling device as necessary.
The vicinity of the support portion of the lower member and the bumper reinforcement are coupled to each other via a connection bracket.

  In the second invention, the shroud panel when the second cooling device is not disposed at the location corresponding to the second opening, the shroud panel has a first side straddling the second opening up and down, and the first side of the first side. A reinforcing member integrally formed in a substantially triangular shape by a second side extending from the upper end to the second vertical member side and a third side connecting the second vertical member side of the second side and the lower end of the first side However, the first crossing side of the first side and the third side is in the vicinity of the support part on the lower member, the second crossing side of the first side and the second side is the upper member, and the second side and the second side The third intersecting portion side with the three sides is fastened to the second vertical member.

  According to the vehicle front structure invention of the present invention, the vicinity of the intermediate vertical member side support portion supporting the first cooling device disposed in the first opening and the highly rigid bumper reinforcement are coupled by the bracket. ing. For this reason, the rigidity of the shroud panel can be ensured by increasing the support rigidity of the lower member, and the shroud is formed by the support portion that supports the first cooling device being formed in the vehicle width direction intermediate portion of the shroud panel. It is possible to apply the first cooling device as a dynamic damper by preventing deformation such as twisting of the panel by the bracket.

  According to the second invention, the second opening is formed when the second cooling device is not disposed in the second opening formed by the upper member, the lower member, the second vertical member, and the intermediate vertical member. Each member to be connected is connected and reinforced by a triangular reinforcing member. For this reason, the rigidity of the shroud panel can be further secured, and deformation of the shroud panel such as torsion caused by the support portion supporting the first cooling device being formed at the intermediate portion in the vehicle width direction of the shroud panel. The first cooling device can be more effectively applied as a dynamic damper by preventing both of the triangular reinforcing member and the bracket.

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

  FIG. 1 shows an exploded perspective view of a vehicle front structure 1 according to an embodiment of the present invention. FIG. 2 shows a perspective view of the shroud panel 3 as seen from the rear.

  The vehicle front structure 1 includes a resin shroud panel 3, and the shroud panel 3 has an upper member 5 extending in the vehicle width direction. A lower member 7 extending in the vehicle width direction is provided below the upper member 5. Left and right first vertical members 8 and second vertical members 9 that connect the left and right ends of the upper member 5 and the lower member 7 in the vehicle width direction are integrally formed. Further, an intermediate vertical member 10 that connects the upper end and the lower end is integrally formed in the middle of the upper member 5 and the lower member 7 in the vehicle width direction.

  A substantially rectangular first opening 11 is formed on the left side of the shroud panel 3 by the upper member 5 and the lower member 7, and the first vertical member 8 and the intermediate vertical member 10. Further, a substantially rectangular second opening 12 is formed on the right side of the shroud panel 3 by the upper member 5 and the lower member 7, the second vertical member 9 and the intermediate vertical member 10. The opening area of the first opening 11 is larger than that of the second opening 12.

  An inner mount hole 21 as a support portion is formed in the lower member 7 near the lower end of the intermediate vertical member 10. Similar to the inner mount hole 21, an outer mount hole 22 is formed near the lower end of the first vertical member 8 of the lower member 7. A leg 17 at the lower end of the radiator 13 serving as a first cooling device disposed corresponding to the first opening 11 is supported in the inner and outer mount holes 21 and 22.

  Specifically, the radiator 13 has a rectangular plate shape, and a pair of leg portions 17 is provided at a lower end portion thereof at a predetermined interval on the left and right sides in the vehicle width direction. A known seismic isolation rubber (not shown in detail) is attached to the leg portion 17. The legs 17 of the radiator 13 are inserted into the inner and outer mount holes 21 and 22 through a seismic isolation rubber. The shroud panel 3 is provided with a condenser 15 as a cooling device that is lighter than the radiator 13 in front of the radiator 13. This capacitor 15 is used as a vehicle air conditioner. And the radiator 13 and the capacitor | condenser 15 are mounted, and these cooling devices (13) and (15) function as a dynamic damper. The radiator 13 and the capacitor 15 may be separately attached to the shroud panel 3 or may be attached to the shroud panel 3 after being sub-assembled together. Note that it is preferable to attach the radiator 13 and the capacitor 15 to the shroud panel 3 because the dynamic damper effect is further improved, but the capacitor 15 may not be attached, and only the radiator 13 may be attached.

  Two intercooler support holes 23 for supporting an intercooler (not shown) as a second cooling device are formed in the lower member 7 corresponding to the second opening 12 of the shroud panel 3. The intercooler is supported in the intercooler support hole 23 as necessary (for example, when a diesel engine is mounted).

  On the other hand, when the intercooler is not disposed, a substantially triangular metal reinforcing member 31 is provided on the rear surface side (rear side of the vehicle) of the shroud panel 3 at a location corresponding to the second opening 12 of the shroud panel 3. It can be attached. That is, the reinforcing member 31 includes a first side 33 straddling the second opening 12 in the vertical direction, a second side 34 extending from the upper end of the first side 33 toward the second vertical member 9, and the second side 34. The side 34 is integrally formed in a substantially triangular shape with the second vertical member 9 side and the third side 35 connecting the lower end of the first side 33. In this reinforcing member 31, the first intersection portion 37 side of the first side 33 and the third side 35 is in the vicinity of the right side of the inner mount hole 21 of the lower member 7, and the second intersection of the first side 33 and the second side 34. The portion 38 side is fastened to the upper member 5, and the third intersecting portion 39 side of the second side 34 and the third side 35 is fastened to the second vertical member 9.

  Further, cover mounting holes 3 a are formed in the upper member 5, the lower member 7 and the intermediate vertical member 10 which surround the second opening 12 of the shroud panel 3. A rectangular thin plate-like cover 25 in which attachment holes 25a are formed so as to correspond to the cover attachment holes 3a is attached by bolts (not shown) by the cover attachment holes 3a. The cover 25 prevents running air from flowing into the engine room from the opening 12 without passing through the radiator 13 and the condenser 15 when the intercooler is not attached to the second opening 12 and the opening. The warm air in the engine room from 12 is prevented from flowing to the front side of the first opening 11. In FIG. 2, the cover 25 is omitted for convenience of explanation.

  The shroud panel 3 is fixed to the rear side of a bumper reinforcement 41 to which a bumper face (not shown) is fixed to the front side. Specifically, as shown in FIG. 3, the bumper reinforcement 41 is made of metal, and has a flat plate portion 41a having a substantially rectangular plate shape in plan view, and a reinforcing portion 41b on the back side of the flat plate portion 41a. And are integrally coupled. The bumper reinforcement 41 may be a resin material having high rigidity. A bumper-side bracket 43 is fixed to the rear side of the bumper reinforcement 41 with a predetermined interval in the vehicle width direction. The bumper-side bracket 43 is formed with a pair of through holes 43a with an interval in the vertical direction. (Only the upper through hole 43a is shown in FIG. 1). On the other hand, in the first vertical member 8 and the second vertical member 9 of the shroud panel 3, a pair of panel mounting holes 3b are formed at intervals in the vertical direction so as to correspond to the through holes 43a. Bolts (not shown) are inserted through the through holes 43a of the bumper side bracket 43 and the panel mounting holes 3b of the first vertical member 8 and the second vertical member 9, and the shroud panel 3 is fastened to the bumper reinforcement 41. Has been. The positional relationship in the vertical direction of the panel mounting hole 3b and the through hole 43a is formed such that the lower end of the bumper reinforcement 41 is positioned above the lower member 7 of the shroud panel 3.

  In FIG. 1, crash pipes 45 are provided at the left and right ends of the bumper reinforcement 41, and the rear ends of the crash pipes 45 are attached to a front side frame (not shown).

  Further, a protruding portion 4 protrudes downward from the lower right end of the intermediate vertical member 10 of the lower member 7, and a rear bracket mounting hole 4 a is formed through the protruding portion 4. The bumper reinforcement 41 has a protrusion 42 projecting downward from the lower end of the bumper reinforcement 41 so as to correspond to the bracket attachment hole 4a in the vehicle width direction, and a front bracket attachment hole 42a is formed through the protrusion 42. ing.

  The connecting bracket 51 is fastened to the rear and front bracket mounting holes 4a and 42a. The connecting bracket 51 includes a rear mounting portion 51a that contacts the rear bracket mounting hole 4a, a front mounting portion 51b that contacts the front bracket mounting hole 42a, and a connecting portion 51c that connects the mounting portions 51a and 51b. ing. The front attachment portion 51b is located above and in front of the rear attachment portion 51a, and the connecting portion 51c is inclined so that the front is upward. Bolt insertion holes 51d are formed through the rear and front attachment portions 51a and 51b, respectively. Bolts 52 are respectively inserted into the bolt insertion holes 51d provided in the connection bracket 51, and are inserted into the rear and front bracket mounting holes 4a and 42a and fastened to the nut 53, whereby the lower member 7 of the shroud panel 3 is connected. The bracket 51 is held in a state suspended from the bumper reinforcement 41 so as to suppress the vertical movement of the lower member 7.

  Therefore, according to the vehicle front part structure 1 according to the present embodiment, in the vicinity of the inner mount hole 21 on the intermediate vertical member 10 side in the lower member 7 that supports the radiator 13 and the capacitor 15 disposed in the first opening 11. A highly rigid bumper reinforcement 41 is connected by a connecting bracket 51. For this reason, the rigidity of the shroud panel 3 can be secured by increasing the support rigidity of the lower member 7, and the inner mount hole 21 of the lower member 7 that supports the radiator 13 and the capacitor 15 is located in the middle of the shroud panel 3 in the vehicle width direction. Deformation such as torsion of the shroud panel 3 due to being formed in the portion is prevented by the connecting bracket 51, and the radiator 13 and the capacitor 15 can be applied as a dynamic damper.

  Each member forming the second opening 12 when no intercooler is disposed in the second opening 12 formed by the upper member 5, the lower member 7, the second vertical member 9, and the intermediate vertical member 10. 5, 7, 9, and 10 are connected and reinforced by a triangular reinforcing member 31. For this reason, the rigidity of the shroud panel 3 can be further ensured, and the inner mount hole 21 of the lower member 7 that supports the radiator 13 and the capacitor 15 is formed in the vehicle width direction intermediate portion of the shroud panel 3. Deformation such as twisting of the shroud panel 3 is prevented by both the triangular reinforcing member 31 and the connecting bracket 51, and the radiator 13 and the capacitor 15 can be more effectively applied as a dynamic damper.

(Other embodiments)
The present invention may be configured as follows with respect to the above embodiment.

  That is, in the above embodiment, the seismic isolation rubber is provided on the leg portion 17 side of the radiator 13 and the inner and outer mounting holes 21 and 22 are provided on the lower member 7 side, but conversely, the seismic isolation rubber is provided on the lower member 7 side. Also good.

  As described above, according to the present invention, the bumper reinforcement is disposed behind the bumper face, and the resin shroud panel to which the cooling device is attached is disposed behind the bumper reinforcement. Useful for substructure.

It is a disassembled perspective view which shows the vehicle front part structure concerning embodiment of this invention. It is the perspective view which looked at the shroud panel from back. It is sectional drawing which expands and shows a connection bracket and its periphery.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle front part structure 3 Shroud panel 5 Upper member 7 Lower member 8 1st vertical member 9 2nd vertical member 10 Middle vertical member 11 1st opening part 12 2nd opening part 13 Radiator (1st cooling device)
17 Leg 21 Inner mounting hole (support)
31 Reinforcing member 33 First side 34 Second side 35 Third side 37 First crossing portion 38 Second crossing portion 39 Third crossing portion 41 Bumper reinforcement 51 Connecting bracket

Claims (2)

A bumper reinforcement is disposed behind the bumper face, and a resin shroud panel to which a cooling device is attached is disposed at the rear of the bumper reinforcement.
The shroud panel includes an upper member, a lower member, a left and right first vertical member and a second vertical member that connect left and right ends of both members in the vehicle width direction, and an intermediate that connects the middle of the upper member and the lower member in the vehicle width direction. The vertical member is integrally formed, and the first vertical member and the second vertical member are coupled to the bumper reinforcement,
The upper member and the lower member, and the first vertical member and the intermediate vertical member form a substantially rectangular first opening, and the lower member near the lower end of the intermediate vertical member corresponds to the first opening. A support portion is formed to support the leg portion at the lower end on the one side in the vehicle width direction of the first cooling device disposed,
A shroud panel corresponding to the substantially rectangular second opening formed by the upper member and the lower member, the second vertical member, and the intermediate vertical member is provided with a second cooling device as necessary.
The vehicle front part structure, wherein the vicinity of the support part of the lower member and the bumper reinforcement are coupled via a connection bracket. In the vehicle front structure according to claim 1,
In the shroud panel when the second cooling device is not disposed at the location corresponding to the second opening, the second side vertically extends from the upper end of the first side and the first side across the second opening. A reinforcing member integrally formed in a substantially triangular shape by a second side extending to the member side and a third side connecting the second vertical member side of the second side and the lower end of the first side, The first intersection part side with the third side is in the vicinity of the support part on the lower member, the second intersection part side of the first side and the second side is the upper member, and the third of the second side and the third side A vehicle front structure characterized in that the intersecting portion side is fastened to the second vertical member.

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