JP7193038B2 - vehicle hood structure - Google Patents

Description

The present disclosure relates to a vehicle hood structure.

When the striker of the front hood (bonnet) of the vehicle is engaged with or disengaged from the lock mechanism on the vehicle body side, a load acts on the front hood in the vertical direction via the striker. Various reinforcing structures are provided in order to increase the strength of the portion of the front hood near the striker against the load acting during such opening and closing operations.

For example, in Patent Document 1, a striker is arranged in the center of the front portion of the bonnet inner panel, and a reinforcing member that forms a closed cross-section together with the bonnet inner panel is arranged corresponding to the position where the striker is arranged. This reinforcing member has a structure in which a plurality of beads inclined with respect to the longitudinal direction of the vehicle body are integrally formed.

Japanese Patent Laid-Open No. 11-91627

However, as described above, the beads shown in Patent Literature 1 have a structure formed on a reinforcing member that forms a closed cross-section together with the hood inner panel, and the beads are formed on a member separate from the hood inner panel. It is not a structure in which beads are formed on the hood inner panel itself and on both sides of the striker. Moreover, it is not shown that a bead is further formed inside the bead so as to connect the side walls to increase the rigidity of the hood inner panel. Therefore, it is desired to further improve the rigidity of the hood inner panel around the striker with a simple structure.

In view of the above problem, at least one embodiment of the present invention can improve the strength of the portion of the front hood near the striker with a simple structure against the load acting through the striker when the front hood is opened and closed. An object of the present invention is to provide a vehicle hood structure.

(1) Invented to achieve the above-described object, at least one embodiment of the present disclosure includes an outer panel that constitutes an outer surface of a front hood for a vehicle, and a front A vehicle hood structure comprising: an inner panel forming an inner surface of a hood; and a striker provided on the inner panel for locking a front end portion of the front hood to a vehicle body, the striker mounting portion of the inner panel. A stepped portion extending in the lateral direction of the vehicle is provided on the rear side of the vehicle, and the surface of the inner panel is formed in a stepped shape toward the outer panel. Vertical beads provided on both sides and extending in the vehicle front-rear direction across the ridgeline of the stepped portion or an extension of the ridgeline, and vertical beads provided inside the vertical beads so as to connect both side walls of the vertical beads and a lateral bead extending in the lateral direction of the vehicle.

According to this configuration, the longitudinal beads extending in the vehicle front-rear direction are formed on both sides of the striker mounting portion of the inner panel in the vehicle left-right direction. ridgeline (second ridgeline R2 in the embodiment) of the stepped stepped portion extending in the left-right direction of the vehicle, or an extension of the ridgeline, so that when the vehicle hood is opened and closed, the stepped portion is It is possible to suppress bending deformation caused by stress concentration on the ridgeline portion.

Further, since a horizontal bead extending in the vehicle left-right direction is formed inside the vertical bead so as to connect both side walls of the vertical bead, the vertical bead spreads in the vehicle left-right direction due to the load when the vehicle hood is opened and closed. It is possible to prevent deterioration of the function of the longitudinal bead.

Therefore, it is possible to achieve high rigidity around the striker mounting portion of the inner panel with a simple structure using the vertical beads and the horizontal beads.

(2) In some embodiments, in the configuration of (1), the horizontal bead is provided in a region other than the portion where the vertical bead crosses the ridgeline of the step portion or an extension of the ridgeline.

According to such a configuration, it is possible to solve the problem that the effect of suppressing bending deformation at the ridge portion due to the vertical bead is weakened. That is, when the horizontal bead is installed on the ridgeline of the stepped portion or the extension of the ridgeline, the ridgeline extends in the left-right direction. Since the effect of suppressing bending deformation at the ridgeline portion is weakened, this problem can be eliminated.

(3) In some embodiments, in the configuration of (1) or (2), the lateral bead is provided on the vehicle rear side of the ridgeline of the step portion or an extension of the ridgeline.

According to such a configuration, it is possible to effectively exhibit the effect of preventing the spread of the longitudinal beads by the lateral beads. That is, since the horizontal bead is provided on the rear end side of the vertical bead, it is possible to effectively prevent the vertical bead from opening. Furthermore, the lateral bead improves the rigidity in the left-right direction of the vehicle at the rear side of the striker mounting portion.

(4) In some embodiments, in the configurations of (1) to (3), the front end of the longitudinal bead is closed in the vehicle front-rear direction.

According to this configuration, the front end of the vertical bead is closed in the longitudinal direction of the vehicle and is covered with a lid, so that the rigidity of the front end portion of the hood inner panel in the lateral direction of the vehicle can be improved.

(5) In some embodiments, in the configuration of (4) above, the center position of the striker closes the center of each of the horizontal beads and the front end of each of the vertical beads in plan view of the inner panel. It exists inside a square formed by connecting the respective centers of the closed portions.

According to such a configuration, it is possible to increase the rigidity in the front, rear, left, and right directions around the striker, and reduce the stress around the striker mounting portion against the vertical load acting when the vehicle hood is opened and closed.

According to at least one embodiment of the present invention, when the front hood is opened and closed, the strength in the vicinity of the striker can be improved with a simple structure against the load acting through the striker.

1 is a bottom perspective view showing an overview of the overall configuration of a hood inner panel of a vehicle hood structure according to one embodiment of the present invention; FIG. FIG. 2 is a top plan view showing an outline of a main part of the hood inner panel according to the embodiment of FIG. 1; FIG. 3 is a schematic cross-sectional view taken along line AA of FIG. 2; FIG. 3 is a schematic cross-sectional view taken along line BB of FIG. 2; FIG. 3 is a schematic sectional view taken along line CC of FIG. 2; FIG. 3 is a schematic cross-sectional view taken along the line DD of FIG. 2, and is a bottom perspective view superimposed on the enlarged view of the striker peripheral portion in the bottom perspective view of FIG. 1;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the drawings. However, the relative arrangement of components described as the embodiment or shown in the drawings is not intended to limit the scope of the present invention, but is merely an example of explanation. Note that the up, down, front, rear, left, and right directions in the description are defined as the directions in which the occupant looks forward from the driver's seat. In each figure, "FR" indicates forward, "LH" indicates left, and "UPR" indicates upward.

One embodiment of the present invention will be described with reference to FIGS. A front hood 1 for opening and closing an engine room in the front of a vehicle is composed of a hood outer panel 3 and a hood inner panel 5 (see FIG. 3). FIG. 1 shows a bottom perspective view of the hood inner panel 5 as seen from the engine room side.

As shown in FIG. 1, the hood inner panel 5 is made of a metal plate (for example, steel plate or aluminum alloy plate). The outer shape of the hood inner panel 5 is substantially symmetrical in the left-right direction of the vehicle in plan view, and has a shape that tapers in the left-right direction toward the front of the vehicle. Further, the hood inner panel 5 has a stepped shape that protrudes downward toward the front portion.

In addition, hinges (not shown) are provided at the left and right rear portions of the hood inner panel 5 to connect the front hood 1 to the vehicle body so that the front hood 1 can be opened and closed. Furthermore, the hood inner panel 5 is provided with openings (not shown) for weight reduction in locations that do not affect strength, or for mounting parts or the like.

In addition, as shown in FIG. 1, the hood inner panel 5 is provided with a hood latch (not shown) provided on the vehicle body on the lower side of the front hood 1 at the vehicle width direction center of the vehicle front portion of the hood inner panel 5 . A striker 9 is provided to lock the front hood 1 together.

The striker 9 is made of a substantially U-shaped metal (for example, iron) member, and both ends thereof are welded and fixed to metal (for example, iron) striker reinforcements 11 (see FIG. 3 ). is joined to the hood outer panel 3 side surface of the striker mounting surface (striker mounting portion) 13 by bolts or welding.

The striker 9 is mounted so as to pass through a through hole 14 formed in the striker mounting surface 13 of the hood inner panel 5 and protrude toward the vehicle body. Note that the position of the center Ps of the striker 9 is provided so as to coincide with the center position of the vehicle in the left-right direction.

Further, as shown in FIGS. 1 and 2, the vehicle front portion 15 of the hood inner panel 5 has a stepped shape that protrudes downward. A left raised portion 19 is formed on the left side in the direction of the vehicle, and a right raised portion 21 is formed on the right side in the vehicle width direction.

Further, the central protruding portion 17, the left protruding portion 19, and the right protruding portion 21 are respectively composed of a central front protruding portion 17a and a central rear protruding portion 17b, a left front protruding portion 19a and a left rear protruding portion 19b, and a right front protruding portion 21a and a right rear protruding portion. It has a protruding portion 21b, and the front side protrudes further downward than the rear side to form a stepped shape.

The central front protuberance 17a protrudes in the shape of a quadrangular pyramid. A step-like stepped portion 23 is formed between the central front raised portion 17a and the central rear raised portion 17b.

That is, a stepped portion 23 is formed on the vehicle rear side of the striker mounting surface 13 so as to extend in the left-right direction of the vehicle and displace the surface of the hood inner panel 5 toward the hood outer panel 3 side in a stepped manner. A first ridgeline R1 is formed on the side of the central front raised portion 17a of the stepped portion 23, and a second ridgeline R2 is formed on the side of the central rear raised portion 17b of the stepped portion 23. As shown in FIG.

FIG. 3 shows the relationship between the striker mounting surface 13, the stepped portion 23, the central front raised portion 17a, the central rear raised portion 17b, the first ridgeline R1, and the second ridgeline R2. FIG. 3 is a schematic cross-sectional view taken along the line AA in FIG. 2 passing through the center Ps of the striker 9 and extending in the longitudinal direction of the vehicle.

As shown in FIG. 3, the striker reinforcement 11 is a plate-like member that is joined to the front side surface, the bottom surface, and the rear side surface of the central front raised portion 17a on the side of the hood outer panel 3. As shown in FIG. Since the portion of the first ridgeline R1 is reinforced by the striker reinforcement 11, it is the second ridgeline R2 that causes a problem of bending deformation due to the concentration of stress acting when the front hood 1 is opened and closed.

Therefore, in order to cope with this bending deformation, as shown in FIGS. Longitudinal beads 25 and 27 extending in the front-rear direction are formed, respectively. The longitudinal beads 25 and 27 pass through both left and right sides of the center Ps of the striker 9, and extend across at least the second ridgeline R2 or an extension of the second ridgeline R2.

The cross-sectional shape of the left vertical bead 25 in the vehicle front-rear direction is, as shown in FIG. It has a shape protruding toward the outer panel 3 side.

The cross-sectional shape of the right longitudinal bead 27 in the vehicle front-rear direction is, as shown in FIG. It has a shape that protrudes further toward the hood outer panel 3 side.

6, the left vertical bead 25 and the right vertical bead 27 have a rectangular cross-sectional shape projecting toward the hood outer panel 3, as shown in FIG. FIG. 6 is a perspective view in which the schematic shape of the cross section is superimposed on the enlarged view of the periphery of the striker in the bottom perspective view of FIG. 1 . Note that the cross-sectional shape is not limited to a rectangular cross-sectional shape, and may be an arc shape, a triangular shape, or the like.

In this way, the vertical beads 25 and 27 extending in the vehicle front-rear direction are formed on the left and right sides of the striker 9 of the hood inner panel 5 . Since it is formed so as to cross the second ridgeline R2 of the stepped portion 23 extending in the left-right direction of the vehicle on the vehicle rear side of the mounting portion or an extension of the second ridgeline R2, the step is formed when the front hood 1 is opened and closed. It is possible to suppress bending deformation caused by stress concentration on the second ridge line R2 of the portion 23 .

Further, lateral beads 29 and 31 extending in the left-right direction of the vehicle are formed inside each of the longitudinal beads 25 and 27 so as to connect both side walls of the longitudinal beads 25 and 27 . By forming the lateral beads 29 and 31, the rigidity in the lateral direction of the vehicle can be improved. It is possible to prevent deterioration of the reinforcing function in the longitudinal direction of the vehicle, which spreads in the longitudinal direction of the vehicle and is exhibited by the longitudinal beads 25 and 27 .

Therefore, the simple structure of the vertical beads 25, 27 and the horizontal beads 29, 31 makes it possible to increase the rigidity of the hood inner panel 5 around the mounting portion of the striker 9. FIG.

Further, the left vertical bead 25 and the right vertical bead 27 have substantially the same length in the longitudinal direction of the vehicle and substantially the same cross-sectional shape. And the front end portion of the right vertical bead 27 is closed in the vehicle front-rear direction.

That is, the front end portion of the left longitudinal bead 25 is closed by the left closing portion 33 . The left blocking portion 33 is formed by continuously extending the left front raised portion 19a, and the bottom surface of the left blocking portion 33 is formed at the same height as the bottom surface 19as of the left front raised portion 19a (see FIG. 4). .

The front end portion of the right longitudinal bead 27 is also closed by the right closing portion 35 . The right blocking portion 35 is formed by continuously extending the right front raised portion 21a, and the bottom surface of the right blocking portion 35 is formed at the same height as the bottom surface 21as of the right front raised portion 21a (see FIG. 5).

In this way, the front ends of the left vertical bead 25 and the right vertical bead 27 are closed in the longitudinal direction of the vehicle and are covered with a lid, so that the front ends of the left longitudinal bead and the right longitudinal bead extend in the longitudinal direction of the vehicle. The rigidity in the left-right direction of the front portion of the hood inner panel 5 on the front side of the striker 9 can be improved more than in the open structure.

On the other hand, the rear ends of the left vertical bead 25 and the right vertical bead 27 extend to the stepped portion 37 forming the rear end of the left rear raised portion 19b at the rear end portion of the left vertical bead 25 and open in the vehicle front-rear direction, The rear end portion of the right vertical bead 27 also extends to a stepped portion 37 forming the rear end of the right rear raised portion 21b and is open in the vehicle front-rear direction.

In this way, the rear end portions of the left vertical bead 25 and the right vertical bead 27 are open in the vehicle front-rear direction, so that the vertical beads 25 and 27 extend up to the stepped portion 37 to extend the vehicle front portion 15 of the hood inner panel 5 . , and the longitudinal beads 25, 27 improve the rigidity in the longitudinal direction of the vehicle over a wide area of the front portion 15 of the vehicle.

Both the left horizontal bead 29 provided on the left vertical bead 25 and the right horizontal bead 31 provided on the right vertical bead 27 are provided on the rear side of the second ridge line R2 of the stepped portion 23 . As a result, the rigidity in the left-right direction can be improved on the rear side of the striker 9 .

Further, the left lateral bead 29 and the right lateral bead 31 are provided on the rear side of the second ridgeline R2 of the stepped portion 23, that is, at the rear end portions of the longitudinal beads 25 and 27, respectively. The effect of preventing the side walls of the beads 25 and 27 from widening can be effectively obtained.

The horizontal beads 29 and 31 are preferably installed outside the area where the vertical beads 25 and 27 intersect the second ridgeline R2 of the stepped portion 23 or the extension of the second ridgeline R2. That is, when the horizontal beads 29 and 31 are installed in the area crossing the second ridgeline R2 or the extension of the second ridgeline R2, the second ridgeline R2 moves the vertical beads 25 and 27 in the horizontal direction through the horizontal beads 29 and 31. It will extend over In this case, the effect of suppressing bending deformation at the portion of the second ridgeline R2 obtained by dividing the second ridgeline R2 or the extension of the second ridgeline R2 with the longitudinal beads 25 and 27 is weakened. Therefore, it is preferable that the lateral beads 29 and 31 are removed from the area of the second ridgeline R2 or its extended line.

Further, as shown in FIG. 2, the positions of the center Ps of the striker 9 are the center P1 of the left horizontal bead 29, the center P2 of the right horizontal bead 31, and the center P2 of the left vertical bead 25 when viewed from above the hood inner panel 5. It exists inside a quadrangle 40 formed by connecting the center P3 of the left blocking portion 33 that blocks the front end of the right vertical bead 27 and the center P4 of the right blocking portion 35 that blocks the front end of the right vertical bead 27 .

A quadrangle 40 is formed by connecting the center Ps of the striker 9, the centers P1 and P2 of the lateral beads 29 and 31, and the centers P3 and P4 of the left and right blocking portions 33 and 35. By positioning it inside the striker 9, high rigidity in the front, rear, left, and right directions is realized in the vicinity of the striker 9, and the stress around the mounting portion of the striker 9 is reliably reduced against the vertical load that acts when the front hood 1 is opened and closed. can be demonstrated in

According to the present embodiment described above, when the front hood 1 is opened and closed, the strength in the vicinity of the striker 9 is improved against the load acting through the striker 9 by the vertical beads 25, 27 and the horizontal beads 29, 31. can be exhibited by a simple configuration.

According to at least one embodiment of the present invention, when the front hood is opened and closed, the strength in the vicinity of the striker can be improved against the load acting through the striker by a simple structure of the vertical bead and the lateral bead. Therefore, it is suitable for use in vehicle hood structures.

This application is based on a Japanese application (Japanese Patent Application No. 2020-088575) filed on May 21, 2020, the contents of which are incorporated herein by reference.

1 front hood 3 hood outer panel (outer panel)
5 Hood inner panel (inner panel)
9 striker 13 striker mounting surface (striker mounting part)
15 Vehicle front portion 17 of hood inner panel Central raised portion 17a Central front raised portion 17b Center rear raised portion 19 Left raised portion 19a Left front raised portion 19b Left rear raised portion 21 Right raised portion 21a Right front raised portion 21b Right rear raised portion 25 Left Vertical bead (longitudinal bead)
27 right longitudinal bead (longitudinal bead)
29 Left side bead (lateral bead)
31 right lateral bead (lateral bead)
23, 37 Stepped portion 33 Left blocking portion 35 Right blocking portion P1, P2 Center of lateral bead P3, P4 Center of blocking portion Ps Center of striker R1 First ridge R2 Second ridge

Claims (5)

an outer panel forming the outer surface of a front hood for a vehicle;
an inner panel facing the outer panel and constituting an inner surface of the front hood;
a striker provided on the inner panel for locking the front end of the front hood to the vehicle body;
A vehicle hood structure comprising:
A stepped portion extending in the left-right direction of the vehicle is provided on the vehicle rear side of the striker mounting portion of the inner panel, and the surface of the inner panel is formed in a stepped shape toward the outer panel,
longitudinal beads provided on both sides of the striker mounting portion of the inner panel in the vehicle left-right direction and extending in the vehicle front-rear direction so as to cross the ridgeline of the stepped portion or an extension of the ridgeline;
a lateral bead provided inside the longitudinal bead and extending in the lateral direction of the vehicle so as to connect both side walls of the longitudinal bead;
A vehicle hood structure comprising: 2. The vehicle hood structure according to claim 1, wherein the horizontal bead is provided in a region other than a portion where the vertical bead crosses a ridgeline of the step portion or an extension line of the ridgeline. 3. The vehicle hood structure according to claim 1, wherein the lateral bead is provided on the vehicle rear side of a ridgeline of the step portion or an extension of the ridgeline. The vehicle hood structure according to any one of claims 1 to 3, wherein a front end of the vertical bead is closed in the vehicle front-rear direction. The center position of the striker is a quadrangle formed by connecting the center of each of the horizontal beads and the center of each of the blocking portions that block the front ends of the vertical beads in plan view of the inner panel. The vehicle hood structure according to claim 4, wherein the hood structure is arranged inside.

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