JP6019971B2 - Vehicle hood structure - Google Patents

Description

  The present invention relates to a hood structure for a vehicle that drains water that enters between an outer plate that is disposed in a front portion of a vehicle body and forms a hood that opens and closes up and down and a reinforcing plate that overlaps a lower surface thereof.

The left and right rear ends of the hood that covers the storage space such as the engine room formed in the front part of the vehicle body so as to be openable and closable are hinged to the vicinity of the rear periphery of the engine room upward opening, and the front end side is the front side of the upward opening by the lock member It is locked to the periphery so that it can be opened.
Such a hood forms an upper wall member of an accommodation space such as an engine room that has a predetermined rigidity by integrally connecting an outer panel and an inner panel in an overlapping manner.

  By the way, the outer peripheral edge of the outer panel and the inner panel overlap each other, and both peripheral edges are hem-processed (bending the peripheral edge of the outer panel, and then bending the peripheral edge of the inner panel that overlaps the outer panel by the bent piece) By bending, the inner panel and the outer panel are joined together by bending). Thus, the hood in which two upper and lower panels are overlapped and the entire outer periphery is formed as a hemming peripheral portion is formed so as to ensure a predetermined rigidity and to maintain a gentle outer shape with reduced air resistance.

  As described above, a vehicle having a hood at the front part of the vehicle body easily infiltrates rainwater, muddy water, and the like into the engine room directly under the hood. In particular, the hood has a plurality of openings in areas other than the periphery in order to reduce the weight of the inner panel and ensure heat dissipation. The hood passes through the inter-panel gap between the periphery of these openings and the lower surface of the outer panel and reaches the engine room. A part of rainwater and muddy water may get intruded by the entrained airflow.

For example, as shown in FIG. 10, rainwater or muddy water that enters the hood is an upward recess immediately after the front flange (projection piece) 102 that is long in the vehicle width direction Y at the front end of the inner panel 100. 101, and in particular, the front end portion 201 of the outer panel 200 indicated by the two-dot chain line (shown by the two-dot chain line in FIG. 10) 200 in the vehicle width direction Y and the front end turn-up portion 202. May enter and stay in the internal gap of the hem-working peripheral portion P sandwiched by the hem, which is a cause of corroding the hood.
Therefore, as shown in FIG. 10, a drainage structure is known in which a drainage hole 300 is provided at an appropriate position of the inner panel 100 and drained rainwater, muddy water, or the like is discharged downward from the hood. .

However, there is a possibility that rainwater, muddy water, etc. may intrude into the drain hole 300, and it is not preferable to provide the drain hole 300 in a place where it easily enters or excessively.
As a conventional example of the drainage structure of the engine hood, in Patent Document 1, a water absorption pipe that sucks adsorbed water is arranged in a gap portion of a hem portion formed by an inner panel and an outer panel, and further flows into the engine room. An air circulation pipe through which the traveling wind of the vehicle passes is provided, and one end of the water absorption pipe is connected to the middle of the air circulation pipe. As a result, when the traveling wind of the vehicle flows through the air circulation pipe, the water adsorbed in the gap is sucked to the air circulation pipe side and discharged by the negative pressure generated at the connection portion with the water absorption pipe. ing.

  Further, Patent Document 2 has a configuration in which an air inlet of an intake duct is provided in a gap between the lower surface of the front portion of the engine hood and the upper frame of the radiator panel that is long in the vehicle width direction, and the entry of snow and water droplets into the air inlet is regulated. Is disclosed. Here, a front structure of an automobile is disclosed in which a bracket that forms a maze-like air guide path is attached to an upper portion of a radiator panel so as to prevent snow and water droplets from entering the air inlet.

JP 2010-76465 A JP 2005-297888 A

  As described above, when a drain hole is provided in the lower surface of the front portion of the hood, it is provided in the vicinity of the lowest position of the peripheral skeleton of the inner panel in order to promote its own weight drop. However, this portion is in the vicinity of the center portion in the vehicle width direction, and easily overlaps with the vicinity of the locker striker or latch mounting portion, and is easy to touch the operator's hand for opening and closing the hood. For this reason, when the operator opens the hood, his / her hand can easily touch the drain hole, and the user may feel uncomfortable.

Further, as shown in FIG. 11, a striker attachment reinforcement 400 of the locking device is often attached near the center of the front edge of the inner panel 100. At that time, a plurality of mounting reinforcements 400 are supported by being welded to the inner panel 100, so that a plurality of upward protrusions 120 are formed on the inner panel 100. In this case, a plurality of upward protrusions 120 are provided in the vehicle width direction Y, and are formed close to the front flange 102 (see the two-dot chain line in FIG. 10) of the hem processing peripheral edge P on the hood front edge side. Then, a part of the soot extending in an annular shape of each upward projecting portion 120 continues to the hemming peripheral edge portion P (a symbol a portion), and the front edge side of the concave portion 101 is divided into right and left. For this reason, it becomes necessary to provide the drain holes 300 for each of the plurality of partition portions e, and in this respect, the ratio that the operator swings to the plurality of drain holes 300 when the hood is opened increases. The problem arises of giving a larger value. Moreover, conversely, the plurality of drain holes 300 has a problem of increasing the number of intrusion locations such as rainwater and muddy water into the inner panel.
In the cited document 1 and the cited document 2, the above-described problems cannot be solved.

  The present invention has been made on the basis of the above problems, and the object is to reduce the number of drain holes when forming the drain holes on the front edge side of the hood. An object of the present invention is to provide a vehicle hood structure that suppresses the occurrence of a sense of incongruity by forming a drain hole at a position where vibration is relatively small.

According to the first aspect of the present invention, a vehicle hood structure is formed of an outer panel that covers an upward opening formed in a front part of a vehicle body and an inner panel that is integrally joined to a lower surface of the outer panel and that opens and closes the upward opening. In the front side of the inner panel, a front and rear inclined part in which the bottom wall descends from the rear side toward the front side, a first bulging part located on the front side and bulging upward from the front and rear inclined part, A front skeleton portion that is formed of a second bulge portion that is located on the front side of the bulge portion and bulges upward; and a coupling end portion that is located on the front side of the second bulge portion and is coupled to the outer panel; Further, the bottom surface of the groove portion between the first bulge portion and the second bulge portion is left and right that gradually decreases in height from the center portion in the vehicle width direction toward the outer side in the vehicle width direction. an inclined portion formed continuously in the central part, before said first bulging portion The upper end face of the second bulging portion has a substantially the same height, characterized in that the formation of the drain hole in each car width direction outer side of the left and right inclined portions.

  According to a second aspect of the present invention, in the hood structure for a vehicle according to the first aspect, a bottom surface of the groove portion extending in the vehicle width direction is curved in the vehicle width direction, extending from the vehicle width direction center portion and the left and right inclined portions extending to the left and right. It is characterized by that.

  The invention of claim 3 of the present application is the vehicle hood structure according to claim 1 or 2, wherein a pair of protrusions, which are on the bottom wall of the front skeleton part and partially overlap the groove part, protrude upward. A lock reinforcing plate for supporting a locking means for locking the front end side of the hood is integrally coupled to the seating surface at the upper end of each projection so that the groove between the pair of projections is positioned lower than the front and rear inclined portions. It is characterized by being formed.

  According to the first aspect of the present invention, the water that has reached the front and rear inclined portion of the front skeleton portion is poured into the groove portion, and the water that has reached the groove portion is caused to flow down to the drain hole through the left and right inclined portions that are lower than the central portion in the vehicle width direction. Since the drain hole is removed from the center of the bulging part where the operator's hand hits and the left and right inclined parts when the hood is opened, the hood opening operator hits the drain hole. It can be excluded that you get in touch and feel uncomfortable.

  In the invention of claim 2, since the bottom surface of the groove portion is curved in the vehicle width direction, water that has reached the center portion in the vehicle width direction can easily flow to the left and right inclined portions, and the groove portion and the second bulge portion on the front side The rigidity of the continuously formed flange portion can be enhanced, and the occurrence of wrinkles at the flange portion and the front end portion and the front end folded portion of the outer panel sandwiching the flange portion can be suppressed during press molding.

  In the invention of claim 3, the water that has reached between the pair of protrusions at the front and rear inclined parts of the front skeleton part is caused to flow into the groove part between the pair of protrusions at a lower position, and the water is inclined left and right from the center part of the groove part. It can be drained easily through the drainage hole.

1 is a schematic perspective view of a vehicle having a hood to which a vehicle hood structure as a first embodiment of the present invention is applied. FIG. 2 is an enlarged perspective view in a state where an outer panel of the hood structure of FIG. 1 is seen through. It is a state without a reinforcement in the front part notch perspective view from the front of the inner panel of the hood structure of FIG. It is a front notch perspective view from the front of the inner panel of the food | hood structure of FIG. 1, and is a reinforcement mounting state. It is a notch perspective view from the back of the inner panel of the hood structure of FIG. It is sectional drawing explaining the mounting state of the locking apparatus of the hood structure of FIG. FIG. 3 is a diagram illustrating a combined configuration of an outer panel and an inner panel front portion of the hood structure of FIG. 1, (a) is a cross-sectional view taken along line AA in FIG. 3, (b) is a cross-sectional view taken along line BB in FIG. FIG. 4 is a cross-sectional view taken along line CC in FIG. 3. It is upper end surface explanatory drawing of the bulging part formed in the front frame | skeleton part in the hood structure of FIG. It is a front part notch perspective view from the back of the inner panel used with the hood structure of the vehicle as 2nd Embodiment of this invention. It is a state without reinforcement in the front notch perspective view from the front of the inner panel of the conventional hood. It is a front notch perspective view from the front of the inner panel of the conventional food | hood, and is a reinforcement mounting state.

Hereinafter, the hood structure of the vehicle which is 1st Embodiment of this invention is demonstrated. In addition, the arrow X in drawing shows the vehicle front-back direction, and the arrow Y shows a vehicle width direction.
FIG. 1 shows a front portion of a vehicle 1 having a vehicle hood structure of the present invention.
The vehicle is provided with front fender panels 2 forming left and right side surfaces on both sides of the front part thereof. An engine room 3 is disposed between the pair of left and right front fender panels 2, and an upward opening 301 of the engine room 3 is covered with a hood (engine hood) 4.

As shown in FIG. 2, the hood 4 has a main portion formed by an outer panel 5 that is an outer plate and an inner panel 6 (see FIG. 6) that is a reinforcing plate that is integrally joined to the lower surface of the outer panel 5.
The inner panel 6 extends along the front, rear, left and right outer peripheral edges of the outer panel 5 and is formed into a cross-sectional shape that bulges downward, and the front and rear and left and right skeletons 7, 8, 9, 10 (see FIG. 2). ). Further, the inner panel 6 is formed with a plurality of openings m at inner portions other than the front, rear, left and right skeleton parts 7, 8, 9, 10 in order to reduce the weight and ensure heat dissipation.

The rear ends of the left and right skeleton parts 9 and 10 of the hood 4 are connected to left and right apron upper members (not shown) which are the rear peripheral edges of the upward opening 301 via the left and right hinges 11 as shown by broken lines in FIG. It is pivotally supported and is supported so that the front end side can swing up and down.
The center in the vehicle width direction of the front skeleton portion 7 of the hood 4 is located at the center in the vehicle width direction of the front bulkhead 12 (see FIG. 6) that forms the front peripheral edge of the upward opening 301 via a latch 13 and a striker 14 that are locking means. Locked to open up and down.

  As shown in FIG. 6, the outer peripheral edge of the outer panel 5 and the inner panel 6 overlap each other, and both peripheral edges are integrated by hem processing. That is, after bending the outer peripheral portion of the outer panel 5, the skeleton portions 7, 8, 9, 10 of the inner panel 6 at the front end folded portion 501 and the front end edge 502 (FIGS. 6 and 7 show the front skeleton portion 7. A hem-working peripheral edge P for integrally joining the inner panel 6 and the outer panel 5 is formed by sandwiching and pressing each projecting piece portion (flange) 601 (described only in the case). As a result, the hood 4 can secure a predetermined rigidity to cope with a frontal collision of the vehicle, and further reduce the air resistance and maintain a gentle outer surface shape to reduce the running resistance of the vehicle.

Thereby, as shown in FIG. 3, the front side portion of the inner panel 6 has an inclined recess-like cross-sectional shape in which the bottom wall w1 descends from the rear side toward the front side (from the right side to the left side in the figure). Thus, a front skeleton portion 7 that is long in the vehicle width direction Y (the direction perpendicular to the paper surface in FIG. 6) is formed.
As shown in FIG. 6, the front skeleton portion 7 has a front side (left side) portion of the bottom wall w 1 at a central portion in the vehicle width direction Y, and a front side (right side in FIG. 6) from the rear side (right side in FIG. 6). A front-rear inclined portion e0 that descends from the right side toward the left side is formed.
Of the bottom wall w1 of the front skeleton 7, a first bulging portion e1 bulging upward on the front side (left side in FIG. 6) from the front / rear inclined portion e0 and a front side of the first bulging portion e1. Then, a second bulging portion e2 bulging upward and a front projecting piece portion (flange) 601 forming a coupling end portion p coupled to the outer panel 5 in front of the second bulging portion e2 are formed continuously. The

  Furthermore, as shown in FIGS. 3-7, the groove part 605 is formed long in the vehicle width direction Y (paper surface perpendicular | vertical direction) between the 1st bulging part e1 and the 2nd bulging part e2. In the central portion E1 in the vehicle width direction Y, the upper end surfaces of the first bulge portion e1 and the second bulge portion e2 have substantially the same height, and a step portion having a step h1 with respect to the groove portion 605 therebetween. Is made. The groove portion 605 maintains a position where the bottom surface f on the left and right inclined portions E2 side in the vehicle width direction Y is lower than the bottom surface f in the central portion E1. That is, as shown in FIG. 7A, the bottom surface f of the central portion E1 on the groove portion 605 is continuously formed so as to be lower by a step h2 than the left and right inclined portions E2.

As a result, the water that has reached the front / rear inclined portion e0 flows into the central portion E1 of the groove portion 605 at a lower position, and further flows down toward the left / right inclined portion E2 at the lower position by a step h2 from the central portion E1. .
Such a groove portion 605 is continuously formed with a left and right inclined portion E2 whose height gradually decreases from the center portion E1 in the vehicle width direction Y toward the outside in the vehicle width direction. In particular, the groove portion 605 includes the center portion E1 and its left and right sides. A bottom surface f extending to the left and right inclined portions E2 extending in the direction of the vehicle is curved in the vehicle width direction Y as indicated by a broken line in FIG.

Further, the left and right inclined portions E2 are inclined and extend to the low position side, reach the lowest position at the front end of the bottom wall w1, and drain holes 702 and 703 are formed at the lowest positions on the left and right side end sides. (See FIGS. 4 and 8). For this reason, rainwater or the like that has reached the bottom wall w1 of the front skeleton part 7 reaches the groove part 605 from the front / rear inclined part e0, and by its own weight toward the left and right drain holes 702 and 703 formed at the lowermost positions lower than the groove part 605. It flows down and drains downward.
More specifically, as shown in FIG. 4, in the bottom wall w1 of the front skeleton part 7, the groove part 605 that is long in the vehicle width direction Y is inclined forward and backward through the first bulge part e1. It is continuously formed in the part e0. A pair of front circular protrusions 606 are arranged in the vehicle width direction Y and project upward in the front-rear inclined part e0 while maintaining a distance substantially equal to the center part E1 of the groove part 605. Further, as shown in FIGS. 3 and 4, a pair of long rear long protrusions 607 protrude upward from a position on the rear side of the vehicle body in the bottom wall w <b> 1 of the front skeleton part 7.

Here, a rectangular lock bracket 15 made of a steel plate is overlapped and welded to each seating surface at the upper ends of the four front and rear projections. As shown in FIG. 6, the lock bracket 15 has a U-shaped striker 14 welded to the center thereof, and the striker 14 is projected downward through the through-hole 604 of the inner panel 6.
As shown in FIGS. 3 to 5, on the bottom wall w <b> 1 of the front side portion of the front skeleton portion 7, in addition to the pair of front circular protrusions 606, the front outer side and the outer side are respectively left and right in the vehicle width direction Y. A circular protrusion 608 is formed, and a front outer circular protrusion 609 is formed on the outer side of the front outer circular protrusion 608.

Here, outside drain holes 702 and 703 are formed at the outer position in the vehicle width direction Y of the right front circular protrusion 606 and at the outer position in the vehicle width direction Y of the left front outer circular protrusion 608, respectively. (See FIGS. 3 and 4). Further, an outside drain hole 704 is formed on the outer side in the vehicle width direction Y of the front outer outer circular protrusion 609 (see FIG. 3).
For this reason, even if the front end side of the bottom wall w1 is separated in the vehicle width direction Y by the plurality of front circular protrusions 606, the front outer circular protrusions 608 on the left and right ends, and the front outer circular protrusion 609, the bottom wall w1. Flows into a groove 605 which is long in the vehicle width direction Y at the lowermost end of the lower end of the water, and further branches from the central portion E1 to the left and right inclined portions E2, and drains holes 702 and 703 at the lowermost positions at the front end of the bottom wall w1 Water can be drained from the outside drain hole 704.

In addition, although the case where the structure where the external water drain hole 704 is formed outside in the vehicle width direction Y of the front outer circular protrusion 609 is described here, the front outer circular protrusion 609 and the external water are described. A configuration in which the punched hole 704 is eliminated may be adopted.
When the hood 4 configured as described above is normally closed, the striker 14 is engaged with the latch 13 of the locking means, the front portion of the hood 4 is locked to the front bulkhead 12 (see FIG. 6), and the upward opening 301 is formed. It is closed and has a predetermined rigidity as the upper wall.

From this state, when the locking means is unlocked and the striker 14 is released from the latch 13, the operator puts his hand in the vehicle width direction Y center of the front skeleton portion 7 of the hood and pulls it upward to stop the hood stop (not shown). By holding the bar, it is kept open.
At this time, only the first and second bulge portions e1 and e2 and the groove portion 605 are formed in the center portion E1 in the vehicle width direction Y on the bottom wall w1 of the front skeleton portion 7 on the inner panel 6 side. There are no drain holes 702, 703 formed there.
As described above, since the drain holes 702 and 703 are excluded from the central portion of the bottom wall w1 of the front skeleton 7 where the operator of the hood 4 hits, the operator comes into contact with the drain holes and feels uncomfortable. Can be prevented.

Furthermore, although the front center part of the hood 4 is a position where rainwater and muddy water heading for the engine room flows relatively much, the drain holes 702 and 703 are shifted to the left and right outside in the vehicle width direction Y from this position. It has been removed.
Therefore, it is possible to prevent rain and the like from entering the front skeleton 7 by using the drain hole 702 as an inlet, and relatively small amounts of the drain holes 702 and 703 are shifted to the left and right sides. There is an advantage that rain or the like can be prevented from entering through the drain holes 702 and 703 in the front portion of the bottom wall w1 of the skeleton 7.

  Further, rain or the like that enters the front skeleton part 7 and reaches the center part E1 in the vehicle width direction can easily flow down to the left and right inclined part E2 along the bottom surface f of the groove part 605 formed to be curved in the vehicle width direction Y. it can. Further, the rigidity of the projecting piece (flange) 601 continuously formed in the groove 605 and the second bulge portion e2 on the front side can be enhanced, and the projecting piece (flange) 601 and the outer panel 5 sandwiching the projecting piece (flange) 601 at the time of press molding. The generation of wrinkles at the front end portion 502 and the front end folded portion 501 can be suppressed.

  Furthermore, when the front and rear inclined portion e0 of the bottom wall w1 is inclined so as to be lower in the front side, and a plurality of front circular protrusions 606 are formed on the low position side, the front skirt of the front circular protrusion 606 is removed. There is a possibility that the water flow in the vehicle width direction Y is blocked by the pre-polymerization zone e3 (see FIG. 3). Therefore, in the present invention, the groove portion 605 that is long in the vehicle width direction Y is formed on the lower position side of the bottom wall w1. Thereby, the water that has reached between the pair of front circular protrusions 606 is caused to flow into the groove 605 between the pair of front circular protrusions 606 at a lower position, and the water is moved from the central part E1 of the groove part 605 to the left and right inclined parts E2. After that, there is an advantage that the water can be easily drained by draining into drain holes 702 and 703 provided at the lowest position.

  In the first embodiment described above, the inner panel 6 has a groove portion 605 that is long in the vehicle width direction Y on the front edge side of the bottom wall w1 of the front skeleton portion 7, and a plurality of front circular protrusions 606 overlap immediately after that. In some cases, the front circular protrusion 606 may be formed relatively far behind the groove 605 that is long in the vehicle width direction Y of the front skeleton 7a of the inner panel 6a.

  In the case of this second embodiment, as shown in FIG. 9, the inner panel 6a has a groove 605 that is long in the vehicle width direction Y in the front side region of the bottom wall w1 of the front skeleton 7a, and is rearward from the groove 605. A pair of left and right front circular protrusions 606 are formed on the side (obliquely upper side in FIG. 9). Here, the front circular protrusion 606 does not interfere with the groove 605. In such a case, rainwater or muddy water that has flowed down to the center of the groove portion 605 flows to the left and right along the bottom surface f of the groove portion 605 and flows through the upper end surface of the inclined portion E2 as it is and a pair of drains on the left and right sides. It flows into the hole 702 (see FIG. 7C) and is surely drained downward.

  Also in this case, since the drain hole 702 is excluded from the vicinity of the center of the bottom wall w1 and the drain holes 702 are formed in the vicinity of the outer sides of the left and right ends of the groove portion 605, the hem on the front end side of the hood as in the first embodiment. It is possible to prevent rainwater or muddy water from entering and staying in the internal gap of the processing peripheral edge P, to prevent corrosion on the front end side of the hood 4, and further to the drainage hole 702 from the vicinity of the center of the hood 4 on the left and right sides. Since it is provided to be shifted in the direction, it is possible to prevent the operator of the hood 4 from being touched and to prevent the hood opening operator from coming into contact with the drain hole and feeling uncomfortable.

  Although the embodiment of the present invention has been described above, the present invention is not limited to the embodiment, and various modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1 Vehicle 3 Engine room 301 Upward opening 4 Hood 5 Outer panel 6, 6a Inner panel 601 Front protrusion piece part (flange)
603, 603a bulging part 606 front circular protrusion 608 front outer circular protrusion 7 front skeleton part 702 drain hole 703 outside drain hole 12 apron upper member (vehicle skeleton member)
13 Latch 14 Strike (locking means)
e0 Longitudinal inclined part e1 1st bulging part e2 2nd bulging part f bottom face p coupling end part w1 bottom wall E1 center part E2 left and right inclined part X longitudinal direction Y vehicle width direction

Claims (3)

In a hood structure for a vehicle that is formed of an outer panel that covers an upward opening formed at the front of the vehicle body and an inner panel that is integrally joined to the lower surface of the outer panel, and that opens and closes the upward opening.
On the front side of the inner panel,
A front and rear inclined part in which the bottom wall descends from the rear side toward the front side;
A first bulging portion located on the front side of the front and rear inclined portion and bulging upward;
A second bulging portion located on the front side of the first bulging portion and bulging upward;
Forming a front skeleton portion that is located on the front side of the second bulging portion and is composed of a coupling end portion that is coupled to the outer panel;
Further, the bottom surface of the groove portion between the first bulge portion and the second bulge portion has a left and right inclined portion whose height gradually decreases from the center portion in the vehicle width direction toward the vehicle width direction outer side. Continuously formed, and in the central portion, the upper end surfaces of the first bulge portion and the second bulge portion have substantially the same height,
A hood structure for a vehicle, wherein a drainage hole is formed on an outer side in the vehicle width direction of the left and right inclined portions. In the vehicle hood structure according to claim 1,
The vehicle hood structure is characterized in that the groove portion has a bottom surface extending in the vehicle width direction that extends from the central portion in the vehicle width direction and the left and right inclined portions extending to the left and right. In the hood structure of the vehicle according to claim 1 or 2,
A lock means for projecting upward a pair of protrusions on the bottom wall of the front skeleton part and partially overlapping the groove part, and locking the front end side of the hood on the seating surface of the upper end of each protrusion Combine the supporting lock reinforcement plates together,
A hood structure for a vehicle, wherein a groove between the pair of protrusions is formed at a lower position than the front and rear inclined portion.

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