JP5692028B2 - Vehicle hood structure - Google Patents

Description

  The present invention relates to a vehicle hood structure.

  Patent Document 1 below discloses a vehicle hood structure in which a reinforcement is fixed to the lower surface of the front end of the hood frame, and a striker for hood locking is attached to the reinforcement. Reinforcement reinforces the attachment of the hood lock.

  When the reinforcement is arranged on the lower side of the hood frame as in Patent Document 1, the reinforcement is arranged at a position that can be seen by the user when the hood is opened. For this reason, it is calculated | required to improve the appearance of the front end of the food | hood seen from the lower surface side.

JP 2003-212154 A

  An object of the present invention is to obtain a vehicle hood structure that can improve the appearance of the lower surface of the front end of the hood in consideration of the above facts.

  According to a first aspect of the present invention, there is provided a vehicle hood structure including a hood outer panel that forms an outer plate of a hood of a vehicle body, and a part of the hood that is disposed so as to face the hood outer panel on the vehicle inner side than the hood outer panel. A hood inner panel in which a concave region is formed in the vehicle width direction middle portion of the front end lower surface, and a front lower portion of the hood inner panel, the front end portion is accommodated in the concave region, and the lower surface of the front end portion is A lock reinforcement disposed flush with the hood inner panel in the vehicle width direction.

  In the above vehicle hood structure, the lock reinforcement is provided on the lower side of the hood inner panel. In the hood inner panel, a concave region is formed in the middle portion in the vehicle width direction on the lower surface of the front end. The front end portion of the lock reinforcement is accommodated in the recessed region, and the lower surface of the front end portion is disposed flush with the hood inner panel in the vehicle width direction. For this reason, the appearance of the front end lower surface of the hood can be improved.

  Here, the flush surface does not have to be a relationship in which the two surfaces are arranged in a completely flat state, and may be substantially flush. That is, it is only necessary to be able to confirm that there is no step between the two surfaces and that the surface is flat.

  In the hood structure for a vehicle according to a second aspect of the present invention, a vertical wall portion is formed at the front end portion of the hood inner panel by being bent in a direction away from the hood outer panel, and at the front end of the concave region. A front end recessed portion in which the vertical wall portion is recessed toward the rear of the vehicle is formed, a bent portion formed by bending upward of the vehicle is provided at the front end portion of the lock reinforcement, and the vehicle front side of the bent portion The bent portion is accommodated in the front end recess so that the surface is flush with the front surface of the vertical wall portion.

According to the above configuration, the vehicle front side surface of the bent portion formed at the front end portion of the lock reinforcement and the vehicle front side surface of the vertical wall portion of the hood inner panel are arranged flush with each other. In addition to the lower surface, the appearance of the front end portion of the vertical wall portion can also be improved.

  The vehicle hood structure of the invention according to claim 3 includes: a vertical wall ridgeline in the vehicle width direction formed on the vehicle lower side of the vertical wall portion; and a folded ridgeline formed on the vehicle lower side of the bent portion. Is arranged so as to be continuous in the vehicle width direction.

  Here, “arranged so as to be continuous in the vehicle width direction” does not need to be physically continuous, and includes those in which folded ridge lines are arranged on the extension lines of the vertical wall ridge lines. . According to the said structure, since it arrange | positions so that a vertical wall ridgeline and a folding | turning ridgeline may continue in a vehicle width direction, the ridgeline of the front end lower surface of a hood looks straight, and it can further improve appearance.

  According to the hood structure for a vehicle according to the first aspect of the present invention, since the front end portion of the lock reinforcement is accommodated in the recessed area and the lower surface is arranged flush with the hood inner panel in the vehicle width direction, the hood The appearance of the lower surface of the front end can be improved.

  According to the vehicle hood structure of the present invention as set forth in claim 2, the front surface of the bent portion formed at the front end of the lock reinforcement and the front surface of the vertical wall of the hood inner panel are formed. Since they are arranged flush, the appearance of the lower surface of the front end of the hood can be further improved.

  According to the hood structure for a vehicle according to the third aspect of the present invention, the vertical wall ridgeline of the hood inner panel and the folding ridgeline of the lock reinforcement are arranged so as to be continuous in the vehicle width direction. Can be further improved.

It is a perspective view which shows the front part of the vehicle to which the hood structure of this embodiment was applied. It is the top view which looked at the hood structure for vehicles of this embodiment from the vehicles upper part side of the hood inner panel. It is a longitudinal cross-sectional view of the hood structure for vehicles along line 3-3 in FIG. It is the partially broken perspective view which looked at the right-and-left end part of the lock reinforcement of the hood structure for vehicles of this embodiment from the lower side. It is sectional drawing of the hood structure for vehicles along line 5-5 in FIG. It is sectional drawing of the hood structure for vehicles along 6-6 line in FIG. It is sectional drawing of the hood structure for vehicles along line 7-7 in FIG. It is sectional drawing of the hood front-end part of the hood structure for vehicles which concerns on the modification of this embodiment. It is sectional drawing of the hood front-end part of the hood structure for vehicles which concerns on the other modification of this embodiment.

  Hereinafter, the vehicle hood structure according to the present embodiment will be described with reference to the drawings. Note that an arrow FR appropriately shown in the figure indicates the vehicle front side, an arrow UP indicates the vehicle upper side, and an arrow OUT indicates the vehicle width direction outer side.

  FIG. 1 shows a front portion of a vehicle to which a vehicle hood structure 20 according to this embodiment is applied. A hood 12 is provided at the front of the vehicle body of the automobile (vehicle) 10 so as to cover the upper part of the engine room. The hood 12 has a pair of left and right hinge arms (not shown) provided at the rear end of the vehicle front-rear direction so that the front portion 12A can be opened and closed with respect to the vehicle body in the vehicle vertical direction. A hood lock mechanism 14 is disposed at the center in the vehicle width direction of the front portion 12A of the hood 12 of the vehicle body of the automobile 10.

  As shown in FIGS. 2 and 3, the hood 12 includes a hood outer panel 22 arranged on the vehicle upper side (vehicle outer side) along the vehicle width direction and the vehicle front-rear direction, and the hood 12 on the vehicle lower side of the hood outer panel 22. A hood inner panel 24 disposed along the width direction and the vehicle front-rear direction. In FIG. 2, the hood outer panel 22 is illustrated by a two-dot chain line in order to make the vehicle hood structure of this embodiment easy to understand.

  The hood outer panel 22 has a shape that gently curves so as to protrude upward, and forms a part of the outer surface (appearance shape) of the vehicle body. On the other hand, the hood inner panel 24 is disposed on the inner side (lower side) of the vehicle body with respect to the hood outer panel 22 so as to face the hood outer panel 22. The peripheral edge 24A of the hood inner panel 24 and the peripheral edge 22A of the hood outer panel 22 are integrated by hemming, whereby the front end of the hood 12 is formed in a closed cross-sectional structure (see FIG. 3).

  The vehicle front side of the hood inner panel 24 is bent so as to protrude toward the vehicle inner side (lower side), and a front hollow portion 12 </ b> R is formed between the hood outer panel 22 and the hood outer panel 22. As shown in FIG. 4, the front side of the front hollow portion 12 </ b> R is formed by bending the peripheral edge portion 24 </ b> A of the hood inner panel 24 from the vehicle front side to the vehicle rear side in a direction away from the hood outer panel 22. It consists of a vertical wall portion 24B and a horizontal wall portion 24C that is bent to the hood outer panel 22 side continuously with the rear end of the vertical wall portion 24B. A vertical wall ridge line 25 along the vehicle width direction is formed at a bent portion between the vertical wall portion 24B and the horizontal wall portion 24C. Further, as shown in FIG. 3, the rear side of the front hollow portion 12 </ b> R includes an asymptotic portion 24 </ b> D that is bent toward the hood outer panel 22 and asymptotically approaches the hood outer panel 22 while continuing from the rear end of the lateral wall portion 24 </ b> C. Yes.

  As shown in FIG. 2, a plurality of corrugated portions 40 extending in the vehicle front-rear direction are formed in parallel in the vehicle width direction in a central region on the vehicle rear side of the lateral wall portion 24 </ b> C of the hood inner panel 24. Yes. In the plurality of waveform-shaped portions 40, convex portions 40A bent toward the vehicle upper side and concave portions 40B bent toward the vehicle lower side in the vehicle front view are alternately arranged in the vehicle width direction.

  Further, beads 42 extending in the vehicle front-rear direction are formed on both sides in the vehicle width direction of the plurality of waveform-shaped portions 40 in the hood inner panel 24. The bead 42 is formed shorter than the length in the vehicle front-rear direction of the plurality of waveform-shaped portions 40, and is disposed on the vehicle rear side from the rear end portion of the lock reinforcement 30.

As shown in FIG. 4, a recessed area 26 is formed in the vehicle width direction intermediate portion of the lateral wall portion 24 </ b> C of the hood inner panel 24. The recessed area 26 has a bottom surface 26B that faces the vehicle lower side, is an area that is recessed downward in the vehicle, and is formed up to the front end of the lateral wall portion 24C. The recessed area 26 accommodates a front end portion 32 of a lock reinforcement 30 described later. In the concave region 26, a joint convex portion 26A is formed. The joint convex portion 26A has a convex shape below the bottom surface 26B of the concave region 26, and is FSC point joined (friction stir weld) to the lock reinforcement 30.

At the front end of the recessed region 26 of the hood inner panel 24, a back-cut recessed portion 27 is formed as a front end recessed portion in which the vertical wall portion 24B is recessed backward in the vehicle. The back-cut recess 27 is formed from one end of the recess area 26 to the other end, and the recess area 26 and the back-cut recess 27 are continuous.

  As shown in FIG. 3, a lock reinforcement 30 is disposed on the vehicle lower side of the front portion of the hood inner panel 24. The lock reinforcement 30 includes a flat front end portion 32 disposed on the front end side of the vehicle, an intermediate portion 34 that extends from the front end portion 32 so as to approach the hood inner panel 24 obliquely upward and rearward of the vehicle, and the vehicle from the intermediate portion 34. It has the extension part 36 extended so that it might go back. A space 30 </ b> R is formed between the hood inner panel 24 and the lock reinforcement 30 in the vehicle vertical direction.

  A bent portion 32 </ b> A that is bent upward of the vehicle is formed at the vehicle front end of the front end portion 32 of the lock reinforcement 30. The bent portion 32A is formed from one end of the front end portion 32 in the vehicle width direction to the other end. A folded ridge line 33 (see FIG. 4) is formed along the vehicle width direction at the bent portion of the bent portion 32A on the vehicle lower side.

  A striker 50 that constitutes a part of the hood lock mechanism 14 is attached to the extension 36 of the lock reinforcement 30. The striker 50 is a substantially “U” -shaped member arranged along the vehicle front-rear direction in a side view of the vehicle. The striker 50 hangs down from the opening 36 </ b> A formed in the extending portion 36 toward the vehicle main body, and has both end portions thereof. Is fixed to the lock reinforcement 30 via the base plate 52. The striker 50 is engaged with the latch portion on the vehicle body side of the hood lock mechanism 14 so that the hood 12 is closed on the vehicle body side. The lock reinforcement 30 needs to be strong in order to fix the striker 50 and is formed of a member that is thicker than the hood inner panel 24.

  As shown in FIG. 5, the depth D <b> 1 of the recessed region 26 of the hood inner panel 24 is formed to be deeper than the thickness of the front end portion 32 of the lock reinforcement 30. The front end portion 32 of the lock reinforcement 30 is accommodated in the recessed region 26, and the lower surface of the front end portion 32 and the lower surface of the horizontal wall portion 24C of the hood inner panel 24 are arranged flush with each other. Here, it is not necessary for the surface to be flush with the surface where the two surfaces are arranged in a completely flat state. That is, it is only necessary to be able to confirm that there is no step between the two surfaces and that the surface is flat.

In addition, the concave step D2 to the vehicle rear side of the back-cut concave portion 27 of the vertical wall portion 24B is formed to be larger than the thickness of the bent portion 32A of the lock reinforcement 30. The bent portion 32A of the lock reinforcement 30 is accommodated in the back-cut recess 27, and the front surface of the bent portion 32A and the front surface of the vertical wall portion 24B are arranged flush with each other. The surface here may be substantially the same as described above. The vertical wall ridge line 25 and the folded ridge line 33 are arranged so as to be continuous with each other in the vehicle width direction. Here, “the vertical wall ridge line 25 and the folding ridge line 33 are arranged so as to be continuous in the vehicle width direction” means that the vertical wall ridge line 25 and the folding ridge line 33 do not have to be physically continuous, It is arranged on the extension line and it seems to be continuous.

  As shown in FIG. 3, the upper surface of the front end portion 32 of the lock reinforcement 30 is in surface contact with the lower surface of the joint convex portion 26A of the hood inner panel 24 and is fixed by FSW point joining. As shown in FIG. 2, the front end portion of the wave shape portion 40 is disposed on the vehicle front side with respect to the rear end of the lock reinforcement 30.

  In the present embodiment, the lower surface of the front end portion 32 of the lock reinforcement 30 is flush with the lower surface of the lateral wall portion 24C of the hood inner panel 24 in the vehicle width direction. Therefore, the appearance of the front end lower surface of the hood 12 when the hood 12 is opened can be improved.

  Moreover, in this embodiment, the vehicle front side surface of the bent portion 32A of the lock reinforcement 30 and the vehicle front side surface of the vertical wall portion 24B are arranged flush with each other, and the vertical wall ridge line 25 and the folding ridge line 33 are Since they are arranged so as to be continuous with each other in the vehicle width direction, the appearance of the lower surface of the front end of the hood 12 when the hood 12 is opened can be further improved.

  Further, in the present embodiment, the front end portions of the plurality of waveform-shaped portions 40 formed on the hood inner panel 24 are arranged so as to be positioned on the vehicle front side from the rear end portion of the lock reinforcement 30. Therefore, the hood inner The bending range of the panel 24 is expanded. Therefore, the inertial mass increases and the inertial force increases, so that the stress propagation range of the hood inner panel 24 is expanded and the energy absorption performance can be enhanced. Moreover, when the said structure is employ | adopted, since the rigidity of the hood 12 becomes high, energy absorption more effectively by employ | adopting the structure which can deform | transform the lock reinforcement 30 easily as mentioned above. Performance can be increased.

  In the present embodiment, the back-cut recess 27 is formed at the vehicle front end of the recessed area 26 of the hood inner panel 24. However, the back-cut recess 27 is not necessarily required. Without forming the back-cut recess 27, as shown in FIG. 8, the folding length of the bent portion 32A is shortened, and the tip of the bent portion 32A is disposed below the bottom surface of the recessed region 26, The front surface of the bent portion 32A and the front surface of the vertical wall portion 24B may be flush with each other. Even if comprised in this way, the folding | turning ridgeline 33 and the vertical wall ridgeline 25 can be made to continue in a vehicle width direction, and an appearance can be improved. In particular, the front opening of the recessed area 26 of the hood inner panel 24 can be covered by forming the back-cut recess 27 and extending the bent portion 32A to the back-cut recess 27 as in this embodiment.

  Moreover, in this embodiment, although the bending part 32A was formed in the front-end part 32 of the lock reinforcement 30, the bending part 32A is not necessarily required. Without forming the bent portion 32A, as shown in FIG. 9, the front end surface 32S of the front end portion 32 of the lock reinforcement 30 may be arranged flush with the vehicle front side surface of the vertical wall portion 24B. Even if comprised in this way, the corner ridgeline 33A and the vertical wall ridgeline 25 formed at the lower corner of the front end surface 32S can be continued in the vehicle width direction to improve the appearance.

10 Car (body)
12 Hood 22 Hood outer panel 24 Hood inner panel 24B Vertical wall portion 25 Vertical wall ridge line 26 Concave region 27 Back cut concave portion (front end concave portion)
30 Lock Reinforcement 32A Bent Part 32 Front End 33 Folding Ridge Line

Claims (3)

A hood outer panel that forms the outer plate of the hood of the vehicle body,
A hood inner panel that forms a part of the hood and is arranged so as to face the hood outer panel on the vehicle inner side than the hood outer panel;
Lock reinforcement provided on the lower side of the front portion of the hood inner panel, the front end portion being accommodated in the concave region, and the lower surface of the front end portion being arranged flush with the hood inner panel in the vehicle width direction;
Vehicle hood structure with A vertical wall portion is formed at the front end portion of the hood inner panel by being bent in a direction away from the hood outer panel, and a front end concave portion in which the vertical wall portion is recessed rearward of the vehicle is formed at the front end of the concave region. Formed,
A bent portion formed by bending upward of the vehicle is provided at the front end portion of the lock reinforcement,
The said bending part is accommodated in the said front-end recessed part so that the surface of the vehicle front side of the said bending part may become flush | planar with the surface of the said vertical wall part on the vehicle front side. Vehicle hood structure.   A vertical wall ridge line in the vehicle width direction formed on the vehicle lower side of the vertical wall portion and a folding ridge line formed on the vehicle lower side of the bent portion are arranged so as to be continuous in the vehicle width direction. The hood structure for vehicles according to claim 2 characterized by things.

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