JP4479550B2 - Engine under cover mounting structure - Google Patents

Description

  The present invention relates to a mounting structure for an engine undercover that is mounted on a vehicle such as an automobile.

Conventionally, in an engine under cover mounting structure for a vehicle such as an automobile, the front portion of the engine under cover fixed to the cross member is extended forward, and this extended portion is provided under the bumper cover (also referred to as a bumper face). A configuration formed as a mounting bracket is known (for example, see Patent Document 1).
Japanese Patent Laid-Open No. 2002-264741

  However, in the engine under cover mounting structure of Patent Document 1, the front part of the vehicle body in front of the cross member in the engine under cover is fixed only to the lower part of the bumper cover. As a result, if the length of the front part of the engine under cover in the longitudinal direction of the vehicle body is long, the weight of the front part of the engine under cover becomes heavy relative to the rigidity of the engine under cover, and only at the lower part of the bumper cover, The front part of the engine under cover cannot be supported. For this reason, the front end portion of the engine under cover hangs downward.

  In view of the above facts, an object of the present invention is to provide an engine under cover mounting structure that can prevent the front end portion of the engine under cover from drooping.

The present invention according to claim 1 is a bumper, a radiator grille attached to an opening provided in the bumper, an engine under cover that covers the lower part of the engine room and has a front end supported by the radiator grille, A recess formed in a front end portion of the engine under cover; an engagement protrusion attached to a vehicle body rear side end portion of the recess; and extending toward the front of the vehicle body; and the engagement protrusion formed in the radiator grill. a support for supporting, provided along the longitudinal direction of the vehicle body in the recess, have a, a reinforcing means for reinforcing said recess with respect to the vehicle body longitudinal direction compressive load of, the reinforcing means recess of the engine undercover Is a rib extending toward the front of the vehicle body from the peripheral portion of the radiator grille side mounting portion inserted into the front portion of the engine undercover. Flip characterized in that it is a front-rear direction position.

The front portion of the engine undercover extended forward of the vehicle body is supported by the bumper via a radiator grille whose weight is supported by the front end portion of the engine undercover. For this reason, there is little deformation | transformation to the downward direction of the front-end part of an engine undercover. In addition, it is provided along the longitudinal direction of the vehicle body in the recess of the engine undercover in which the engagement convex portion supported by the support portion formed on the radiator grill is formed, and the concave portion is reinforced against the compressive load in the longitudinal direction of the vehicle body. The reinforcing means is a rib extending toward the front of the vehicle body from the peripheral portion of the radiator grille side mounting portion inserted into the recess of the engine under cover, and the front end portion of the rib is the same as the front wall portion of the engine under cover. The ribs improve the rigidity against crushing in the longitudinal direction of the vehicle body in the recesses of the engine undercover. For this reason, when a pedestrian's leg | abutment contacts the site | part which opposes the recessed part of the engine undercover in a front bumper at the time of a front collision, it can suppress that the collision energy absorption part performance of the recessed part of an engine undercover falls.

The present invention according to claim 1 has an excellent effect that the front end of the engine undercover can be prevented from drooping and the pedestrian protection performance at the time of a front collision can be improved .

A first embodiment as a reference example of an engine undercover mounting structure not included in the present invention will be described with reference to FIGS.

  In the figure, the arrow FR indicates the vehicle body front direction, the arrow UP indicates the vehicle body upward direction, and the arrow IN indicates the vehicle width inside direction.

  As shown in FIG. 4, a front bumper 11 is attached along the vehicle width direction to the lower portion of the front end of the automobile body 10 in the present embodiment, and the bumper cover 12 of the front bumper 11 is made of a resin material. The bumper cover 12 covers bumper reinforcement and the like, and constitutes a design surface of the front bumper 11. The bumper cover 12 is fixed to a radiator support upper or the like.

  A pair of left and right openings 14 are formed in the lower portion 12 </ b> A of the bumper cover 12. These openings 14 are elongated holes along the vehicle width direction, and a radiator (lower) grill 28 is attached to these openings 14 along the vertical direction of the vehicle body. In addition, a number plate mounting portion 16 is formed in the vehicle width direction central portion of the lower portion 12A of the bumper cover 12.

  As shown in FIG. 1, an upper wall portion 14 </ b> A is formed at the upper portion of the opening 14 in the bumper cover 12 from the front of the vehicle body to the rear of the vehicle body. A claw portion 14B protruding toward the rear side of the vehicle body is formed at the rear end portion of the upper wall portion 14A, and the claw portion 14B has a convex shape downward.

  A lower wall portion 14 </ b> C is formed from the front of the vehicle body to the rear of the vehicle body at the lower portion of the opening 14 in the bumper cover 12. A claw portion 14D protruding toward the rear side of the vehicle body is formed at the rear end portion of the lower wall portion 14C, and the claw portion 14D has a convex shape upward.

  A radiator 20 is attached to the front portion of the engine room 18 of the vehicle body, and a lower portion 20A of the radiator 20 is fixed to a radiator support lower 22.

  As shown in FIG. 2, the radiator support lower 22 has a long shape along the vehicle width direction, and a hat whose cross-sectional shape seen from the vehicle width direction protrudes upward from the vehicle body by pressing or the like. It has a cross-sectional shape. The upper portion of the radiator 20 is fixed to a radiator support upper (not shown), and the radiator support upper and the radiator support lower 22 are supported by a vehicle body frame member such as a front side member (not shown).

  A plurality of through holes 24 are formed in the front flange 22A of the radiator support lower 22 at predetermined intervals along the vehicle width direction, and the through holes 26 are also formed in the rear flange 22B of the radiator support lower 22 in the vehicle width direction. A plurality are formed at predetermined intervals along the line.

  As shown in FIG. 1, the radiator grille 28 attached to the bumper cover 12 is disposed on the vehicle body front side of the radiator 20. A plurality of openings 30 are formed in the upper portion 28A of the radiator grill 28, and the shapes of the openings 30 are various shapes such as a slit shape and a honeycomb shape.

  A plurality of locking portions 34 are formed at predetermined intervals along the vehicle width direction at the upper end portion of the upper portion 28A of the radiator grill 28. The locking portion 34 has a slit shape, and the claw portion 14B of the bumper cover 12 is inserted from the vehicle body front side toward the vehicle body rear side, and the claw portion 14B is locked to the rear end lower portion 34A of the locking portion 34. Has been.

  A plurality of locking portions 36 are formed at predetermined intervals along the vehicle width direction at the lower end of the upper portion 28A of the radiator grill 28. The locking portion 36 has a slit shape, and the claw portion 14D of the bumper cover 12 is inserted from the vehicle body front side toward the vehicle body rear side, and the claw portion 14D is locked to the rear end upper portion 36A of the locking portion 36. Has been.

  Further, the lower portion 28B of the radiator grille 28 is a vertical wall portion extending from the upper side of the vehicle body toward the lower side of the vehicle body. The lower portion 28B of the radiator grille 28 has a lower portion in the vehicle width direction and a central portion in the vehicle width direction. A radiator grille side mounting portion 28C as a support portion is formed.

  An engine under cover 40 is disposed on the lower side of the engine room 18. The engine under cover 40 is formed in a plate shape with a resin material or the like, and covers the engine room 18 from the lower side of the vehicle body.

  As shown in FIG. 2, through holes 42 are formed in the fixing portion 40 </ b> A on the front side of the engine under cover 40 at a predetermined interval along the vehicle width direction. Holes 44 are formed at predetermined intervals along the vehicle width direction.

  As shown in FIG. 1, bolts 48 are inserted into the through holes 42 of the engine under cover 40 and the through holes 24 of the radiator support lower 22 from the lower side of the vehicle body to the upper side of the vehicle body. The nut 49 is screwed from above the vehicle body. Bolts 50 are inserted through the through holes 44 of the engine under cover 40 and the through holes 26 of the radiator support lower 22 from the lower side of the vehicle body toward the upper side of the vehicle body. Nut 51 is screwed together.

  Therefore, the fixing portion 40A of the engine under cover 40 is fixed to the radiator support lower 22 by the bolts 48 and 50 and the nuts 49 and 51.

  As shown in FIG. 2, a rib 54 is erected on the front side of the vehicle body from the fixed portion 40 </ b> A of the engine under cover 40 toward the upper side of the vehicle body. The rib 54 has a lattice shape with a horizontal rib 55 along the vehicle width direction and a vertical rib 57 along the longitudinal direction of the vehicle body. The rear end portion 57A of the vertical rib 57 extends from the rear horizontal rib 55 to the vehicle rear side. Protrudes to the side.

  As shown in FIG. 1, the side shape of the rear end portion 57 </ b> A of the vertical rib 57 viewed from the vehicle width direction is a triangular shape.

  As shown in FIG. 2, the foremost lateral rib 55 constitutes a front wall portion 40 </ b> C of the engine undercover 40.

  As shown in FIG. 3, recesses 59 are formed from the front side of the vehicle body in the vicinity of both ends in the vehicle width direction of the engine undercover 40 and in the center portion in the vehicle width direction. 55.

  On the bottom 59A of each recess 59, a pin portion 56 as an engaging protrusion is formed so as to protrude toward the front of the vehicle body. The front view shape of the pin portion 56 viewed from the front of the vehicle body is a rectangular shape that is long in the vertical direction, and is not easily deformed by a load acting in the vertical direction. Moreover, the side view shape seen from the vehicle width direction of the pin part 56 has a triangular shape in which the tip part is longer in the lower side than the upper side, and can be easily inserted into the locking hole 60 described later. The lower side to be locked is long in the front-rear direction and is difficult to come off.

  A through hole 58 is formed near the rear of the pin portion 56 in the engine under cover 40.

  As shown in FIG. 1, a locking hole 60 is formed in a portion of the radiator grille side mounting portion 28 </ b> C of the radiator grill 28 that faces the pin portion 56 of the engine under cover 40. Further, the pin portions 56 of the engine under cover 40 are inserted into the locking holes 60 from the rear side of the vehicle body to the front side of the vehicle body.

  Therefore, when the front portion 40B of the engine under cover 40 is about to move downward (in the direction of arrow A in FIG. 1), the pin portion 56 of the engine under cover 40 is formed on the radiator grille side mounting portion 28C of the radiator grill 28. The weight is supported by the bumper cover 12 via the radiator grille 28 and is transmitted to a radiator support upper to which the bumper cover 12 is fixed.

  As shown in FIG. 2, the lower end portion 12B of the bumper cover 12 on the lower side from the opening portion 14 has a U-shaped cross section viewed from the vehicle width direction with the opening portion facing the rear of the vehicle body. Further, a connecting portion 12D is formed on the lower wall portion 12C of the lower end portion 12B obliquely upward on the rear side of the vehicle body, and the connecting portion 12D has a strip shape.

  As shown in FIG. 1, an integral hinge 62 is formed at the base of the connecting portion 12D of the bumper cover 12, and the connecting portion 12D is moved upward (in the direction of arrow B in FIG. 1) by the integral hinge 62. It can rotate downward (in the direction of arrow C in FIG. 1).

  Accordingly, the connecting portion 12D of the bumper cover 12 can move from the lower die-cutting position (product position) indicated by the two-dot chain line in FIG. 1 to the upper mounting position indicated by the solid line in FIG. It has become.

  As shown in FIG. 2, a through hole 66 is formed in the rear end portion 12 </ b> E of the connecting portion 12 </ b> D of the bumper cover 12.

  As shown in FIG. 1, a bolt 77 is inserted into the through hole 66 of the bumper cover 12 and the through hole 58 of the engine under cover 40 from the lower side of the vehicle body to the upper side of the vehicle body. A nut 79 is screwed from above.

  Therefore, the rear end portion 12E of the connecting portion 12D in the lower portion 12A of the bumper cover 12 is fixed to the front portion 40B of the engine under cover 40 by the bolt 77 and the nut 79, and the vertical direction of the lower portion 12A of the bumper cover 12 The position and the vehicle body longitudinal position are determined.

  Next, the operation of this embodiment will be described.

  In the present embodiment, when the engine under cover 40 is assembled to the vehicle body, the fixing portion 40A of the engine under cover 40 is fixed to the radiator support lower 22 by the bolts 48 and 50 and the nuts 49 and 51. Further, the pin portion 56 of the engine under cover 40 is inserted into the locking hole 60 formed in the radiator grille side mounting portion 28C of the radiator grill 28, and then the integral formed at the base portion of the connecting portion 12D of the bumper cover 12. With the hinge 62 as the center, the connecting portion 12D of the bumper cover 12 is moved from a lower position (die-cut position) indicated by a two-dot chain line in FIG. 1 to an attachment position indicated by a solid line in FIG. Secure to the engine under cover 40.

  As a result, when the length of the front portion 40 </ b> B of the engine under cover 40, for example, the length L from the through hole 42 to the through hole 58 is increased, the engine under cover 40 with respect to the rigidity of the engine under cover 40. The weight of the front part 40B becomes heavy, and the front part 40B of the engine under cover 40 tends to move downward (in the direction of arrow A in FIG. 1).

  At this time, the pin portion 56 of the engine under cover 40 is supported by the lower portion 60 </ b> A of the locking hole 60 formed in the radiator grille side mounting portion 28 </ b> C of the radiator grill 28. As a result, the front portion 40B of the engine undercover 40 extended forward of the vehicle body is supported by the bumper cover 12 via the radiator grille 28 whose weight is supported by the front end portion of the engine undercover 40.

  Therefore, the front end portion of the engine under cover 40 is not easily deformed downward, and the front end portion of the engine under cover 40 can be prevented from hanging down.

  Further, since the front end portion of the engine under cover 40 can be prevented from drooping, the approach angle of the front portion of the vehicle body, that is, the tangent line drawn from the lower end of the front portion of the vehicle body (lower end of the bumper cover 12) to the outer periphery of the front wheel tire It is possible to prevent the minimum angle from being reduced. Moreover, since the lower wall part 12C of the bumper cover 12 hangs down, it is possible to suppress a reduction in the repulsive force when coming into contact with the pedestrian's foot at the time of the front collision. Furthermore, the problem that the bolt 77 can be seen from the front side of the vehicle body due to the hanging of the lower wall portion 12C of the bumper cover 12 can be prevented.

Next, a second embodiment as a reference example of an engine undercover mounting structure not included in the present invention will be described with reference to FIG.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 5, in this embodiment, a mounting flange 40D is formed at the upper end of the bottom 59A of each recess 59 in the engine under cover 40 toward the front of the vehicle body, and a through hole 82 is formed in the mounting flange 40D. Is formed.

  On the other hand, mounting flanges 28D are formed toward the rear of the vehicle body in the vicinity of both ends in the vehicle width direction and at the center in the vehicle width direction of the lower portion 28B of the radiator grill 28, and through holes 84 are formed in the mounting flange 28D. .

  Bolts 86 are passed through the through hole 84 of the attachment flange 28D of the radiator grill 28 and the through hole 82 of the attachment flange 40D of the engine under cover 40 from the vehicle body lower side to the vehicle body upper side. A nut 87 is screwed onto the bolt 86 from above the vehicle body, and the mounting flange 28D of the radiator grill 28 and the mounting flange 40D of the engine under cover 40 are coupled.

  Therefore, when the front portion 40B of the engine under cover 40 is going to move downward (in the direction of arrow A in FIG. 5), the mounting flange 40D of the engine under cover 40 is supported by the mounting flange 28D of the radiator grill 28. It has become.

  Next, the operation of this embodiment will be described.

  In the present embodiment, when the engine under cover 40 is assembled to the vehicle body, the fixing portion 40A of the engine under cover 40 is fixed to the radiator support lower 22 by the bolts 48 and 50 and the nuts 49 and 51. Further, the mounting flange 28D of the radiator grill 28 and the mounting flange 40D of the engine under cover 40 are coupled by the bolt 86 and the nut 87, and then the integral hinge 62 formed at the base portion of the connecting portion 12D of the bumper cover 12. , The connecting portion 12D of the bumper cover 12 is moved from a lower position (die-cut position) shown by a two-dot chain line in FIG. 5 to a mounting position shown by a solid line in FIG. Secure to cover 40.

  As a result, as in the first embodiment, when the front portion 40B of the engine under cover 40 is about to move downward (in the direction of arrow A in FIG. 5), the mounting flange 40D of the engine under cover 40 is moved to the radiator grille 28. Are supported by the mounting flange 28D. As a result, the front portion 40B of the engine undercover 40 extended forward of the vehicle body is supported by the bumper cover 12 via the radiator grille 28 whose weight is supported by the front end portion of the engine undercover 40.

  Therefore, the front end portion of the engine under cover 40 is not easily deformed downward, and the front end portion of the engine under cover 40 can be prevented from hanging down.

Next, a third embodiment as a reference example of an engine undercover mounting structure not included in the present invention will be described with reference to FIG.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 6, in this embodiment, a mounting flange 40 </ b> D is formed at the upper end of the bottom 59 </ b> A of each recess 59 in the engine under cover 40 toward the front of the vehicle body.

  On the other hand, a radiator grille side mounting portion 28E is formed toward the rear of the vehicle body in the vicinity of both ends in the vehicle width direction and the center portion in the vehicle width direction of the lower portion 28B of the radiator grill 28. Further, the radiator grille side mounting portion 28E has a substantially U-shape in a side view with the opening facing the rear of the vehicle body, and the rear end portion is opened in a C shape.

  A mounting flange 40D of the engine under cover 40 is inserted into the radiator grille side mounting portion 28E of the radiator grill 28 from the vehicle body rear side toward the vehicle body front side.

  Accordingly, when the front portion 40B of the engine under cover 40 is about to move downward (in the direction of arrow A in FIG. 6), the mounting flange 40D of the engine under cover 40 is formed on the radiator grille 28 at the lower portion 28B. The lower portion 28F of the mounting portion 28E is supported.

  Next, the operation of this embodiment will be described.

  In the present embodiment, when the engine under cover 40 is assembled to the vehicle body, the fixing portion 40A of the engine under cover 40 is fixed to the radiator support lower 22 by the bolts 48 and 50 and the nuts 49 and 51. A mounting flange 40D of the engine under cover 40 is inserted into the radiator grille side mounting portion 28E of the radiator grille 28 from the rear side of the vehicle body toward the front side of the vehicle body. Centering on the formed integral hinge 62, the connecting portion 12D of the bumper cover 12 is moved from a lower position (die cutting position) indicated by a two-dot chain line in FIG. 6 to a mounting position indicated by a solid line in FIG. The nut 79 is fixed to the engine under cover 40.

  As a result, as in the first embodiment, when the front portion 40B of the engine under cover 40 is about to move downward (in the direction of arrow A in FIG. 6), the mounting flange 40D of the engine under cover 40 is attached to the radiator grille. 28 is supported by the lower portion 28F of the radiator grille side mounting portion 28E. As a result, the front portion 40B of the engine undercover 40 extended forward of the vehicle body is supported by the bumper cover 12 via the radiator grille 28 whose weight is supported by the front end portion of the engine undercover 40.

  Therefore, the front end portion of the engine under cover 40 is not easily deformed downward, and the front end portion of the engine under cover 40 can be prevented from hanging down.

Next, a fourth embodiment of an engine under-cover mounting structure is the invention according to FIGS.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 8, in this embodiment, unlike the first embodiment, ribs (plate-like or plate-like) are provided at the peripheral portion of the radiator grille side mounting portion 28 </ b> C inserted into each recess 59 of the engine undercover 40. A member 70 supplemented to reinforce the thin portion is integrally formed, and the plate-like rib 70 has a rectangular frame shape having upper, lower, left, and right wall portions and open at both ends in the vehicle body front-rear direction. The rib 70 is formed so as to surround a locking hole 60 formed in the radiator grille side mounting portion 28C of the radiator grille 28, and extends from the radiator grille side mounting portion 28C toward the front of the vehicle body.

  As shown in FIG. 7, the front end portion 70 </ b> A of the rib 70 reaches the front of the vehicle body from the front end portion 56 </ b> A of the pin portion 56 of the engine undercover 40. Further, the front end portion 70A of the rib 70 is in the same front-rear direction position as the front wall portion (general cross-section portion) 40C of the engine undercover 40, and the shock absorber 74 fixed to the front surface 72A of the bumper reinforcement 72 is provided. The front-rear direction position is the same as that of the front surface 74A.

  Therefore, in the bumper assembled state, the rib 70 formed on the radiator grill 28 is provided in the recess 59 of the engine under cover 40. As a result, the rigidity against crushing in the longitudinal direction of the vehicle body at the portion where the recess 59 is formed by the rib 70 is improved, and substantially the same rigidity as other portions where the recess 59 is not formed. Therefore, when a pedestrian's foot comes into contact with a portion of the front bumper 11 that faces each recess 59 of the engine under cover 40 at the time of a front collision, it is possible to suppress a decrease in the performance of the collision energy absorbing portion at this portion. It has become.

  Next, the operation of this embodiment will be described.

  In the present embodiment, the ribs 70 extending in the longitudinal direction of the vehicle body are formed at the periphery of the radiator grille side mounting portion 28 </ b> C inserted into the respective recesses 59 of the engine undercover 40, so the ribs 70 form the recesses 59 of the engine undercover 40. The rigidity against crushing in the longitudinal direction of the vehicle body is improved, and the rigidity is substantially the same as other parts of the front wall portion 40C of the engine undercover 40 in which the recess 59 is not formed. As a result, when the pedestrian's foot comes into contact with a portion of the front bumper 11 that faces the concave portion 59 of the engine under cover 40 at the time of the front collision, it is possible to suppress the performance of the collision energy absorbing portion at this portion from being deteriorated. For this reason, the pedestrian protection performance at the time of a front collision can be improved.

Next, a description will be given of a fifth embodiment of an engine under-cover mounting structure is the invention according to FIG.

  In addition, about the same member as 4th Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 9, in the present embodiment, unlike the fourth embodiment, the shape of the plate-like rib 70 as viewed from the front-rear direction of the vehicle body is a U-shape with the upper side of the vehicle body opened.

  For this reason, in addition to the effect of 4th Embodiment, the rib 70 can be reduced in weight.

Next, a sixth embodiment as a reference example of an engine undercover mounting structure not included in the present invention will be described with reference to FIGS.

  In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIG. 10, in this embodiment, unlike the first embodiment, plate-like ribs 80 as reinforcing means are integrally formed on the bumper cover 12 side. The rib 80 has a wall shape that connects the lower wall portion 14 </ b> C of the opening 14 formed in the bumper cover 12 and the lower wall portion 12 </ b> C of the bumper cover 12. Further, the rib 80 is disposed with its width direction (arrow W direction in FIG. 10) in the longitudinal direction of the vehicle body, and passes through the concave portions 59 of the engine under cover 40 in the vertical direction of the vehicle body.

  The front end portion 80A of the rib 80 reaches the front of the vehicle body from the front end portion 56A of the pin portion 56 of the engine under cover 40. Further, the front end portion 80A of the rib 80 is in the same front-rear direction position as the front wall portion (general cross-sectional portion) 40C of the engine undercover 40, and the shock absorber 74 fixed to the front surface 72A of the bumper reinforcement 72 is provided. The front-rear direction position is the same as that of the front surface 74A. On the other hand, the rear end portion 80B of the rib 80 reaches the vicinity of the radiator grille side mounting portion 28C.

  As shown in FIG. 11, the two ribs 80 are disposed with the pin portion 56 of the engine under cover 40 interposed therebetween.

  Accordingly, the rib 80 formed on the bumper cover 12 is provided in the recess 59 of the engine under cover 40 in the bumper assembled state. As a result, the ribs 80 formed on the bumper cover 12 improve the rigidity of the recess 59 of the engine undercover 40 against crushing in the longitudinal direction of the vehicle body, and other front wall portions 40C of the engine undercover 40 where the recess 59 is not formed. It becomes almost the same rigidity as the part. For this reason, when a pedestrian's foot contacts the part of the front bumper 11 that faces the concave part 59 of the engine under cover 40 at the time of the front collision, it is possible to suppress the deterioration of the performance of the collision energy absorbing part of this part. ing.

  Therefore, as in the fourth embodiment, this embodiment can also improve the pedestrian protection performance at the time of a front collision.

  In the above, the present invention has been described in detail with respect to specific embodiments. However, the present invention is not limited to the above embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art. For example, instead of the bolts 48, 50, 77 and the nuts 49, 51, 79, other fixing members such as clips may be used.

  In the fourth and fifth embodiments, the rib 70 is integrally formed with the radiator grille 28. However, the rib 70 and the radiator grille 28 are separate parts, and the rib 70 is fixed to the radiator grille side mounting portion 28C by bonding or the like. It is also good.

FIG. 5 is an enlarged cross-sectional view taken along line 1-1 of FIG. It is the disassembled perspective view seen from the vehicle body diagonally front which shows the engine undercover attachment structure which concerns on 1st Embodiment as a reference example which is not included in this invention. It is the perspective view seen from the vehicle body slanting back upper side which shows a part of engine under cover attachment structure concerning a 1st embodiment as a reference example not included in the present invention. It is the perspective view seen from the vehicle body diagonally front which shows the vehicle body to which the engine under cover attachment structure which concerns on 1st Embodiment as a reference example which is not included in this invention was applied. It is sectional drawing corresponding to FIG. 1 which shows the engine undercover attachment structure which concerns on 2nd Embodiment as a reference example which is not included in this invention. It is sectional drawing corresponding to FIG. 1 which shows the engine undercover attachment structure which concerns on 3rd Embodiment as a reference example which is not included in this invention. It is sectional drawing corresponding to FIG. 1 which shows the engine undercover attachment structure which concerns on 4th Embodiment which is this invention. It is a perspective view corresponding to FIG. 2 which shows the engine undercover attachment structure which concerns on 4th Embodiment which is this invention. It is a perspective view corresponding to FIG. 2 which shows the engine undercover attachment structure which concerns on 5th Embodiment which is this invention. It is sectional drawing corresponding to FIG. 1 which shows the engine undercover attachment structure which concerns on 6th Embodiment as a reference example not included in this invention. It is a perspective view corresponding to FIG. 2 which shows the engine undercover attachment structure which concerns on 6th Embodiment as a reference example which is not included in this invention.

Explanation of symbols

10 Auto Body 11 Front Bumper (Bumper)
12 Bumper cover 14 Bumper cover opening 22 Radiator support lower 28 Radiator grill 28A Upper portion of radiator grill 28B Lower portion of radiator grill 28C Radiator grill side mounting portion (support portion) of radiator grill
28D Radiator grille mounting flange 28E Radiator grille side mounting part 40 Engine under cover 40A Engine under cover fixing part 40B Engine under cover front part 40C Engine under cover vertical wall part 40D Engine under cover attaching flange 56 Pin part Joints)
60 Locking hole 70 Rib (reinforcing means)
80 ribs (reinforcing means)

Claims (1)

With bumpers,
A radiator grille attached to an opening provided in the bumper;
An engine under cover that covers the lower part of the engine room and has a front end supported by the radiator grill;
A recess formed in the front end of the engine undercover;
An engagement convex portion attached to the vehicle body rear side end portion of the concave portion and extending toward the front of the vehicle body,
A support portion that is formed on the radiator grille and supports the engagement convex portion;
Reinforcing means provided along the longitudinal direction of the vehicle body in the recess, and reinforcing the recess against a compressive load in the longitudinal direction of the vehicle body;
Have a reinforcing means and the extending toward the vehicle front from the periphery of the radiator grille side attachment portion that is inserted into the recess of the engine under cover, the front wall portion of the front end portion of the rib is the engine undercover An engine undercover mounting structure characterized by having the same longitudinal position .

Images