JP2008030632A - Deck garnish structure for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a deck garnish which efficiently adjusts a value of absorbable load. <P>SOLUTION: The deck garnish 20 is provided with a deck garnish lower 40, i.e., an energy absorption member arranged below a rear end 32 of a front hood 30 and above a cowl top 16 at a front end side. In the deck garnish lower 40, a plurality of ribs 23 having a cross section in a vehicle longitudinal direction formed in an approximately U shape opened to any one of front and rear sides, extending in a vehicle width direction and arranged with a clearance in the vehicle width direction are provided in a standing manner in the inside. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a deck garnish structure that absorbs an impact applied to a front hood of a vehicle.

  Conventionally, for example, in an automobile where the engine room is provided in the front part of the vehicle body, when an impact is applied to the front hood covering the engine room, the obstacle value to the pedestrian is reduced by efficiently absorbing the impact. Is required.

  Usually, in automobiles where the engine room is formed in the front part of the car body, a deck garnish extending across the width of the vehicle for decoration etc. is provided between the lower end of the windshield and the rear end of the front hood. It has been. The deck garnish is disposed above a cowl top, which is a skeleton member that supports the lower end of the front windshield, and is configured to cover the upper surface of the lower end of the front windshield and to be recessed below the rear end of the front hood.

  In addition, the deck garnish has a vertical wall that stands up toward the front hood on the front side so that the inside of the engine room is not visible from the driver's seat and water does not enter the engine room. The gap with the front hood is small.

  However, the deck garnish formed as described above is made of, for example, resin and has a certain degree of rigidity. Therefore, when an impact is applied from above the front hood, the front hood is displaced downward by the impact and comes into contact with the deck garnish. At this time, the displacement of the front hood is prevented by the rigidity of the deck garnish. . As a result, the impact applied to the front hood tends not to be absorbed. In particular, when the deck garnish has a vertical wall portion as described above, this tendency can be conspicuous due to the rigidity of the vertical wall portion.

For this reason, in order to efficiently absorb the impact applied to the front hood from above, it has been proposed to absorb the impact with a deck garnish. As a structure of this type of deck garnish, a part of the deck garnish is used as a fragile portion, and the impact applied to the front hood is absorbed by the fragile portion being destroyed (see, for example, Patent Document 1).
JP2005-306086

  However, in the deck garnish disclosed in Patent Document 1, the fragile portion is destroyed when an impact exceeding a predetermined value is applied. In other words, since a part of the deck garnish is used as the fragile portion, it is necessary to adjust the shape of the fragile portion when adjusting the load value to be absorbed by the deck garnish. It is necessary to adjust so as to achieve both rigidity for maintaining the shape of the so-called deck garnish and ease of deformation for absorbing the shock. For this reason, in the structure which makes a part of deck garnish a weak part, it is thought that adjustment of the shock absorption load of a deck garnish becomes difficult. Therefore, an object of the present invention is to provide a deck garnish capable of efficiently adjusting the setting of the shock absorbing load.

A deck garnish structure for a vehicle according to a first aspect of the present invention for solving the above-described problems is the deck garnish disposed across the vehicle width direction between the lower end of the front windshield of the vehicle and the rear end of the front hood of the vehicle. The garnish is provided with an energy absorbing portion disposed on the front end side below the rear end of the front hood and above the skeleton member of the vehicle, and the energy absorbing portion has a cross section in the front-rear direction of the vehicle. According to this configuration, a plurality of ribs that are formed in a substantially U shape that is open on one side and extend in the vehicle width direction and that are spaced apart in the vehicle width direction are erected inside. The load applied to the hood is transmitted to the energy absorption part of the deck garnish, and can absorb the impact load. In particular, the rib erected inside the energy absorbing portion having a substantially U-shaped cross section maintains the shape of the energy absorbing portion at the normal time and efficiently absorbs the load by breaking or deforming when the load is input. be able to. Furthermore, since the energy absorbing portion of the deck garnish can freely adjust the magnitude of the impact load to be absorbed by changing the number of ribs, it is easy to set the impact absorbing load.

  A vehicle deck garnish structure according to a second aspect of the present invention that solves the above problem is the vehicle deck garnish structure according to the first aspect of the present invention, wherein the energy absorbing portion is located below the rear end of the front hood. A lower wall portion located on the side of the skeleton member below the upper wall portion, and a side wall portion that connects one end of either the upper wall portion or the lower wall portion in the vehicle front-rear direction. The rib is provided between the upper wall portion and the lower wall portion, and a weak portion that is deformed by a load from above is provided on the side wall portion.

  According to this configuration, the load applied to the energy absorbing portion acts on the weak portion of the side wall portion, and the side wall portion is broken or deformed. Therefore, the load applied to the energy absorbing portion can be absorbed by the side wall portion, and further, smoothly transmitted to the rib in the energy absorbing portion, so that the impact load can be efficiently absorbed.

  A vehicle deck garnish structure according to a third aspect of the present invention that solves the above problem is the vehicle deck garnish structure according to the first and second aspects of the invention, wherein the rib is flat and is inclined with respect to the vertical direction. It will be erected in the state.

  According to this configuration, since the ribs are arranged obliquely with respect to the vertical direction, when a load is applied to the energy absorption part of the deck garnish from above, the ribs are easy to collapse. The impact load can be absorbed efficiently without disturbing the deformation.

  A vehicle deck garnish structure according to a fourth aspect of the present invention that solves the above-described problems is the vehicle deck garnish structure according to the first to third aspects of the invention, wherein at least one end of each end in the vehicle front-rear direction of the rib is cut. A notch is formed.

  According to this configuration, since the ribs are easily broken or deformed, the impact load can be absorbed more smoothly.

  A vehicle deck garnish structure according to a fifth aspect of the present invention that solves the above problem is the vehicle deck garnish structure according to the second to fourth aspects of the invention, wherein the side wall portion has a vehicle front-rear cross-section in cross section with the upper wall portion. It is a shape bent so as to protrude toward the side where the side wall is disposed with respect to the lower wall, and the fragile portion is provided at a bent portion of the side wall.

  According to this configuration, the side wall portion is more easily deformed at the fragile portion, the energy absorbing portion is more smoothly deformed, and the shock load absorbing action is more reliably ensured.

  A vehicle deck garnish structure according to a sixth aspect of the present invention for solving the above-described problems is the vehicle deck garnish structure according to the first to fifth aspects of the invention, wherein the deck garnish extends in the vehicle width direction, and the front garnish structure The deck garnish upper exposed between the window glass and the front hood, and the deck garnish lower which forms the energy absorbing portion and is fixed to the skeleton member and supports the deck garnish upper.

  According to this configuration, since the energy absorbing portion is a separate member from the deck garnish upper, even if the energy absorbing portion is deformed due to absorption of impact load, the function can be regenerated by replacing only the deck garnish lower. . In addition, by changing the energy absorbing unit, it is possible to easily adjust the setting of the shock absorbing load corresponding to various conditions.

  According to the present invention, it is possible to adjust the magnitude of the load to be absorbed only by adjusting the number of ribs. That is, the load value that can be absorbed can be adjusted efficiently.

  A deck garnish 20 according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view in which a front portion of a vehicle body 11 of an automobile 10 including a deck garnish 20 is partially omitted, and is cut at a substantially central portion in the vehicle width direction. As shown in FIG. 1, the front portion of the vehicle body 11 includes an engine room 12, a windshield 13, a cowl top 16 including a cowl top outer 14 and a cowl top inner 15, a deck garnish 20, and a front hood 30. And so on.

  The engine room 12 is formed in front of the vehicle compartment in the vehicle body 11 and is covered with a front hood 30.

  The front window glass 13 is disposed in front of the passenger compartment, and a lower end 13 a is supported by the cowl top 16. The cowl top 16 is a skeleton member of the vehicle body 11 and is disposed below the front window glass 13 and extends in the vehicle width direction so as to connect left and right front pillars (not shown).

  The cowl top 16 includes a cowl top outer 14 and a cowl top inner 15. The cowl top outer 14 is disposed above the cowl top 16 on the vehicle body and supports the lower portion of the lower end 13a of the front window glass 13.

  The cowl top inner 15 is disposed below the cowl top outer 14, extends to a position where the front end overlaps the rear end 32 of the front hood 30, and supports the lower portion of the deck garnish 20 described later.

  The front hood 30 extends rearward from the front edge of the engine room 12 and covers the upper surface of the engine room 12. A support mechanism is provided on the rear end 32 side of the front hood 30 and is supported by the vehicle body 11 so that the front end 31 side opens and closes with the support mechanism as a fulcrum. Further, the front end 31 side of the front hood 30 is detachably fixed to the front edge of the engine room 12 by a latch mechanism.

  The front hood 30 includes a hood outer 33 and a hood inner 34. The hood outer 33 faces the outside of the vehicle body, and the rear end thereof is positioned in front of the lower end 13a of the front window glass 13 so as not to hinder the opening / closing operation of the front hood 30 described above.

  The hood inner 34 is disposed below the hood outer 33, and the front end and the rear end of the hood inner 34 are fixed to the front end and the rear end of the hood outer 33.

  FIG. 2 is a cross-sectional view showing a state in which the range of F2 shown in FIG. 1 is enlarged and seen from the side in the vehicle width direction. FIG. 2 shows the lower end 13 a of the windshield 13, the cowl top outer 14, the cowl top inner 15, the rear end 32 of the front hood 30, and the deck garnish 20 of the cowl top 16. As shown in FIG. 2, the rear side 34 a of the hood inner 34 is stepped downward from the rear end fixed to the hood outer 33 toward the front, for example. In the present embodiment, for example, there are three stages.

  As shown in FIGS. 1 and 2, the deck garnish 20 is disposed between the front window glass 13 and the front hood 30 above the cowl top 16 and extends in the vehicle width direction. The deck garnish 20 includes a deck garnish upper 21 and a deck garnish lower 40 that extend in the vehicle width direction.

  As shown in FIG. 2, the deck garnish upper 21 is exposed on the vehicle body surface side, and the rear end 21 a is attached so as to cover the lower end 13 a of the windshield 13. Therefore, the rear end 21 a of the deck garnish upper 21 has a shape along the lower end 13 a of the windshield 13. In the deck garnish upper 21, a thin portion 21 b is formed in the vicinity of the lower end 13 a of the windshield 13. The thin portion 21b is thinner than other portions, for example, by forming a cut.

  Further, the front end side of the deck garnish upper 21 extends to the lower side of the front hood 30 and is coupled to the deck garnish lower 40 and supported below.

  The deck garnish upper 21 is formed in a shape that allows the wiper device 17 not to protrude upward from the vehicle body, and includes a wiper mounting portion 24 and a vertical wall portion 25.

  The wiper mounting portion 24 is positioned forward of the rear end 21a in the deck garnish upper 21, and the wiper device 17 is mounted thereon. The wiper mounting portion 24 extends downward and forward from the rear end 32 of the front hood 30. For this reason, even if the wiper device 17 is attached to the wiper attachment portion 24, the wiper device 17 is prevented from protruding upward.

  The vertical wall portion 25 is formed on the front side of the wiper mounting portion 24 in the deck garnish upper 21. The vertical wall portion 25 extends to the vicinity of the rear end 32 of the front hood 30 so as to rise toward the rear end 32 of the front hood 30. The vertical wall portion 25 improves the appearance, for example, by reducing the gap between the front hood 30 and preventing the inside of the engine room 12 from being seen from the driver's seat.

  A front portion 26 positioned in front of the vertical wall portion 25 in the deck garnish upper 21 extends downward after being lowered in accordance with the shape of the hood inner 34. A hood weather strip 18 is provided between the front portion 26 and the front hood 30 to prevent water from entering the engine room 12.

  The deck garnish lower 40 is coupled below the front portion 26 of the deck garnish upper 21. In other words, the deck garnish lower 40 is disposed between the deck garnish upper 21 and the cowl top inner 15 at a position below the rear end 32 of the front hood 30.

  The deck garnish lower 40 includes an upper wall portion 41 located on the deck garnish upper 21 side, a lower wall portion 42 located on the cowl top inner 15 side below the upper wall portion 41, an upper wall portion 41, and a lower wall portion 42. It is comprised from the side wall part 43 of the vertical wall shape to connect, and when it sees from the vehicle width direction side, what is called a vehicle front-back direction cross section is formed in the substantially U shape opened to a vehicle body front.

  Further, a rib 23 is provided between the upper wall portion 41 and the lower wall portion 42, and the energy absorption of the deck garnish 20 is performed by the upper wall portion 41, the lower wall portion 42, the side wall portion 43 and the rib 23. Forming part.

  FIG. 3 is a perspective view showing the entire deck garnish lower 40. As shown in FIG. 3, the deck garnish lower 40 is a long member and is arranged over the vehicle width direction. The upper wall portion 41 and the lower wall portion 42 of the deck garnish lower 40 are flat and are provided in a row substantially vertically in parallel, and a plurality of ribs 23 are spaced apart in the vehicle width direction inside the deck garnish lower 40. Has been placed.

  As shown in FIG. 2, the deck garnish lower 40 has an upper wall portion 41 attached to the lower surface of the front portion 26 of the deck garnish upper 21, and a lower wall portion 42 fixed to the upper surface of the cowl top inner 15. . The side wall portion 43 connects the rear end 41a of the upper wall portion 41 and the rear end 42a of the lower wall portion 42.

  As shown in FIG. 2, the vehicle front-rear direction cross section of the side wall portion 43 is bent at a central portion 43a located substantially at the center in the vertical direction, and the central portion 43a is bent so as to protrude most rearward of the vehicle. It is formed into a shape. That is, the side wall portion 43 has a bent shape so that a cross section in the vehicle longitudinal direction protrudes toward the side where the side wall portion 43 is disposed with respect to the upper wall portion 41 and the lower wall portion 42.

  Further, the side wall portion 43 is formed so that the thickness gradually decreases from the upper and lower ends toward the central portion 43a, and the thickness of the central portion 43a that is a bent portion of the side wall portion 43 is the thinnest. The central portion 43a is set to be broken or deformed when a load is applied from above. In addition, the center part 43a is a weak part said by this invention.

FIG. 4 is an enlarged perspective view showing a range of F4 shown in FIG. In FIG. 4, the rib 23 arrange | positioned at the end of the deck garnish lower 40 is shown.

  As shown in FIG. 4, the rib 23 has a flat plate shape and is disposed obliquely with respect to the vertical direction between the upper wall portion 41 and the lower wall portion 42. As shown in FIG. 2, the shape of the rib 23 is a shape along the inner surface of the deck garnish lower 40 when the rib 23 is viewed from the side when the rib 23 is disposed obliquely with respect to the vertical direction.

  The deck garnish lower 40 is made of, for example, resin, and the rib 23 and the upper wall portion 41, the lower wall portion 42, and the side wall portion 43 are integrally formed.

  As shown in FIG. 2, the rib 23 is formed with a notch 27 at a substantially central portion in the vertical direction of the front end. The notch 27 is cut out in a substantially triangular shape from the front end of the rib 23 toward the rear, and is opened on the front end side.

  The number of ribs 23 formed and arranged in this way is such that when the deck garnish lower 40 is subjected to a load of a predetermined value or more from above, it is connected to the upper wall 41, the lower wall 42, and the side wall 43. The portion X is determined so that it can absorb an impact of the predetermined value or more when the portion X is deformed or destroyed and falls down, or the vicinity of the apex portion 27a of the notch 27 is destroyed or deformed. The predetermined value is a size required to be absorbed. Next, the operation of the deck garnish 20 will be described. As shown by arrows in FIG. 2, when a load P of a predetermined value or more is applied to the front hood 30 from above, the front hood 30 is directed downward and the rear end 32 of the front hood 30 is moved downward as shown in FIG. The deck garnish upper 21 is displaced until it comes into contact with the upper end edge of the vertical wall portion 25.

  The predetermined value is a size that is desired to be absorbed. FIG. 5 shows the vicinity of the deck garnish 20 after a load P of a predetermined value or more is input to the front hood 30.

  The load P applied to the front hood 30 is transmitted to the deck garnish lower 40 via the deck garnish upper 21 by the rear end 32 of the front hood 30 coming into contact with the upper edge of the vertical wall portion 25 of the deck garnish upper 21. .

  As shown in FIG. 5, the load P transmitted to the deck garnish lower 40 acts on each rib 23 and the side wall portion 43 via the upper wall portion 41. As described above, each rib 23 is disposed obliquely with respect to the vertical direction. Therefore, the load P acts on each rib 23 so as to tilt each rib 23.

  Specifically, of the load P transmitted to the deck garnish lower 40, the load component acting on each rib 23 is a connecting portion X between each rib 23 and the upper wall portion 41, the lower wall portion 42, and the side wall portion 43. And acts in the vicinity of the apex portion 27 a of the notch portion 27 of each rib 23. As described above, the connecting portion X between the rib 23 and the upper wall portion 41, the lower wall portion 42, and the side wall portion 43 and the apex portion 27a of the notch portion 27 have a load applied to the deck garnish lower 40 at a predetermined value or more. If so, it is set to be destroyed or deformed. For this reason, the rib 23 is destroyed, for example, as shown in FIG. As a result, the load P is absorbed.

  When each rib 23 absorbs the load P as described above, the rib 23 falls down. At this time, the load P acts on the rib 23 and also acts on the central portion 43a of the side wall portion 43 to break or deform the central portion 43a. The load P is also absorbed when the central portion 43a is broken or deformed. At this time, since the central portion 43a is formed thin, the central portion 43a is deformed or broken with a relatively small load.

  In other words, since the central portion 43 a of the side wall portion 43 is thin, the side wall portion 43 does not inhibit the load from being transmitted to each rib 23.

  Moreover, since the side wall part 43 is formed in the shape which protrudes back, it deform | transforms inward of the deck garnish lower 40, and does not inhibit the displacement of the upper wall part 41. FIG.

  As described above, since the upper wall portion 41 is displaced downward by the action of the ribs 23 and the side wall portion 43, the deck garnish upper 21 is also displaced downward, and the impact load from the front hood 30 can be efficiently handled. Can be absorbed. In addition, the displacement of the deck garnish upper 21 is not inhibited by the destruction of the thin portion 21b of the deck garnish upper 21.

  In the deck garnish 20 configured as described above, the value of the load that the deck garnish lower 40 should absorb can be adjusted by adjusting the number of ribs 23.

  That is, when the predetermined value of the load to be absorbed is relatively small, the number of ribs 23 is preferably reduced. Or when making the predetermined value of the load which should be absorbed comparatively large, it is good to increase the number of ribs 23.

  Further, since the rib 23 is inclined with respect to the vertical direction, the load applied to the deck garnish lower 40 acts on the connecting portion X of each rib 23 and the upper wall portion 41, the lower wall portion 42, and the side wall portion 43. It becomes easy to act, and it becomes easy to act also in the vicinity of the vertex part 27a of the notch part 27. FIG. For this reason, the deck garnish lower 40 can obtain a stable crushing performance.

  Further, since the notches 27 are formed, the ribs 23 are easily broken or deformed, and thus are stably broken or deformed.

  Further, since the deck garnish lower 40 has the side wall portion 43 and the central portion 43a of the side wall portion 43 is thin, the side wall portion 43 can absorb an impact and the load applied to the deck garnish lower 40 is smoothly transmitted to each rib 23. It becomes like this.

  Further, the side wall 43 has a cross section in the vehicle front-rear direction formed in a shape in which the central portion 43a protrudes rearward, so that the side wall 43 is not only more easily deformed but also toward the inside of the deck garnish lower 40. Prevents deformation.

  Further, since the thin portion is formed in the deck garnish upper 21, the deck garnish upper 21 does not hinder the transmission of the load to the deck garnish lower 40.

  Further, the rib 23 is easily broken or deformed by forming the notch 27.

  The deck garnish 20 includes a deck garnish upper 21 and a deck garnish lower 40 serving as an energy absorbing unit. Therefore, even if an impact acts on the deck garnish 20 and the deck garnish 20 absorbs the impact, only the deck garnish lower 40 needs to be replaced. Further, by changing the deck garnish lower, it is possible to simplify the setting of the shock absorbing load corresponding to various conditions.

The perspective view which abbreviate | omits and shows the front part of the vehicle body of a motor vehicle provided with the deck garnish which concerns on one Embodiment of this invention. Sectional drawing which shows the state seen from the vehicle width direction side while expanding the range of F2 shown in FIG. The perspective view which shows the whole deck garnish lower shown by FIG. The perspective view which expands and shows the range of F4 shown by FIG. Sectional drawing which shows the vicinity of the deck garnish after the load more than a predetermined value is input into the front hood. The perspective view which shows the state by which the rib shown by FIG. 4 was destroyed.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Car body, 12 ... Engine room, 13 ... Front window glass, 13a ... Lower end, 16 ... Cowl top, 20 ... Deck garnish, 23 ... Rib, 27 ... Notch, 30 ... Front hood, 32 ... Rear end, 41 ... Upper wall part, 42 ... Lower wall part, 43 ... Side wall part, 43a ... Central part (fragile part).

Claims (6)

In the deck garnish structure arranged across the vehicle width direction between the lower end of the front windshield of the vehicle and the rear end of the front hood of the vehicle,
The deck garnish is provided with an energy absorbing portion disposed on the front end side below the rear end of the front hood and above the skeleton member of the vehicle,
The energy absorbing portion is formed in a substantially U shape with a cross section in the vehicle front-rear direction opened in either the front or the rear, and is extended in the vehicle width direction and arranged at intervals in the vehicle width direction. A deck garnish structure for a vehicle, wherein a plurality of ribs are erected inside.   The energy absorbing portion includes an upper wall portion located below the rear end of the front hood, a lower wall portion located on the skeleton member side below the upper wall portion, and the upper wall portion and the lower wall portion. A side wall that connects one end of the vehicle in the longitudinal direction, and the rib is erected between the upper wall and the lower wall, and the side wall includes The vehicle deck garnish structure according to claim 1, further comprising a weakened portion that is deformed by a load from above.   The deck garnish structure for a vehicle according to claim 1, wherein the rib is a flat plate and is erected in an inclined state with respect to the vertical direction.   The vehicle deck garnish structure according to any one of claims 1 to 3, wherein the rib has a notch formed at at least one end of both end portions in the vehicle front-rear direction.   The side wall portion is shaped so that a vehicle front-rear direction cross-section protrudes toward the side where the side wall portion is disposed with respect to the upper wall portion and the lower wall portion, and the fragile portion is The deck garnish structure for a vehicle according to any one of claims 2 to 4, wherein the deck garnish structure is provided at a bent portion of the side wall portion.   The deck garnish extends in the vehicle width direction, forms a deck garnish upper exposed between the windshield and the front hood, and forms the energy absorbing portion, and is fixed to the skeleton member and fixed to the deck garnish The deck garnish structure for a vehicle according to any one of claims 1 to 5, wherein the deck garnish lower is configured to support an upper.

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