JP2009083745A - Structure of vehicular cowl part - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure of a vehicular cowl part, capable of absorbing shock without sacrificing a sound isolation effect. <P>SOLUTION: A cowl panel 21 supporting a front glass 7 front end comprises an extension 21a having the rear end connected to a dash upper panel 11, extending from the connected portion till the glass support 21c lower part, and a rising portion 21b rising upwardly from the extension 21a front end, having the rear end of the glass support 21c connected to the glass support 21c so that the glass support 21c having a tilted forward shape can move rearwardly below when shock load is input to the front glass 7 from front part. The rising portion 21 can deform rearwardly from a boundary 21e with the extension 21a. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a structure of a cowl portion that supports a front end portion of a windshield of a vehicle, and belongs to the field of vehicle safety technology.

  In a vehicle, a cowl portion is provided in front of an upper end portion of a dash panel that partitions an engine room and a vehicle compartment, and a front end portion of a windshield may be supported by a cowl panel constituting the cowl portion.

  In a vehicle having such a structure, for example, as disclosed in Patent Document 1, when an impact load is input to the windshield from the front due to a collision of a pedestrian or the like with the windshield, A dash upper panel (a cowl inner panel in Patent Document 1) that constitutes the upper side and supports the rear end portion of the cowl panel (a cowl outer panel in Patent Document 1) can be bent and deformed forward and downward. There is a case where the applied impact can be absorbed.

JP 2006-206004 A

  However, in the one described in Patent Document 1, the dash upper panel (Cowl Inner Panel in Patent Document 1) is designed to be easily deformed when an impact load is input. ), And as a result, there is a problem that noise in the engine compartment easily enters the vehicle compartment behind. That is, there is a problem that the sound insulation function of the dash upper panel must be sacrificed.

  Therefore, an object of the present invention is to provide a cowl structure for a vehicle that can perform shock absorption without sacrificing sound insulation.

  In order to solve the above-described problems, the present invention is configured as follows.

  First, the invention according to claim 1 of the present application is a vehicle cowl structure that supports a windshield front end, and the cowl panel that supports the windshield front end includes an upper end of a dash upper panel and the windshield. The cowl panel is provided between the front end portion over the entire width in the vehicle width direction, and the cowl panel has a front-falling glass support portion that supports the front end portion of the windshield. The rear end of the dash upper panel is coupled to the dash upper panel so as to be movable rearward and downward, extending from the coupling portion to the lower side of the glass support portion, and extending upward from the front end of the extended portion. A rising portion coupled to a rear end portion of the glass support portion, and the rising portion is configured to be deformable rearward with respect to a boundary portion with the extending portion. And said that you are.

  According to a second aspect of the present invention, in the cowl portion structure of the vehicle according to the first aspect, the rising portion has a front rising shape and is substantially orthogonal to the windshield surface. To do.

  According to a third aspect of the present invention, in the vehicle cowl structure according to the first or second aspect, the vehicle is closed at a position below the cowl outer panel at a predetermined range in the center in the vehicle width direction of the panel. A cowl inner panel having a cross section is provided.

  According to a fourth aspect of the present invention, in the cowl part structure of the vehicle according to the third aspect, a connection for connecting a front part of the cowl inner panel and a part below the upper end part of the dash upper panel. A member is provided.

  According to a fifth aspect of the present invention, in the vehicle cowl structure according to the fourth aspect, the connecting member is formed of a wiper bracket that supports a wiper.

  Next, the effect of the present invention will be described.

  First, according to the first aspect of the present invention, the cowl panel that supports the front end portion of the windshield has a front-falling glass support portion that supports the front end portion of the windshield. The rear end of the dash upper panel is coupled to the dash upper panel so that the rear end is coupled to the front of the vehicle from the coupling portion to the lower side of the glass support portion, and upward from the front end of the extended portion. A rising portion coupled to the rear end portion of the glass support portion, and the rising portion is configured to be deformable rearward with respect to the boundary portion with the extending portion. When input, the glass support portion, the rising portion, and the extending portion are folded in a Z-shape, and the glass support portion moves rearward and downward, whereby the impact load from the front is well absorbed. It will be.

  And according to such a structure, since it is not necessary to deform the dash upper panel for absorbing the shock, it is not necessary to thin the panel so that it can be bent, and the sound insulation function by the dash upper panel is sufficiently obtained. be able to. As a result, it is not necessary to separately attach a sound insulation article or the like.

  According to the second aspect of the present invention, since the rising portion has a front rising shape and is substantially orthogonal to the windshield surface, the supporting rigidity for the windshield in a normal state can be ensured satisfactorily. You can also.

  By the way, when the cowl panel is attached only to the left and right end portions with respect to the vehicle body, vibration may occur between the left and right end portions due to vibration during traveling, for example.

  However, according to the third aspect of the present invention, the cowl panel is provided below the cowl panel so that a cowl inner panel having a closed cross section is formed with a portion of the panel in the center in the vehicle width direction. The rigidity of the portion in the center predetermined range in the vehicle width direction is improved. Therefore, vibrations between the left and right ends of the cowl panel are less likely to occur, and noise associated with the vibrations is less likely to occur. Moreover, the sound insulation effect by the cowl inner panel itself can be obtained.

  Since the cowl panel itself can provide an impact absorbing action, even if a cowl inner panel is provided, the impact absorbing action is not hindered.

  According to the fourth aspect of the present invention, since the connecting member that connects the front portion of the cowl inner panel and the portion below the upper end portion of the dash upper panel is provided, the cowl panel is connected to the cowl. It will be supported by the dash upper panel via the inner panel and the connecting member. Therefore, the support rigidity with respect to the cowl panel is improved, and the effect described in claim 3 is improved. That is, the vibration of the cowl panel and the noise associated therewith are further suppressed.

  According to the fifth aspect of the present invention, the connecting member can be constituted by the originally required wiper bracket. Therefore, the effect described in claim 4 can be obtained without adding a new member.

  Hereinafter, a cowl structure of a vehicle according to an embodiment of the present invention will be described.

  FIG. 1 is a perspective view showing a vehicle body structure of a vehicle according to the present embodiment, and FIG. 2 is a cross-sectional view taken along line AA of FIG.

  As shown in these drawings, a dash panel 4 is provided between the engine room 2 and the vehicle compartment 3 of the vehicle 1 according to the present embodiment so as to partition them forward and backward. A cowl portion 5 is provided in the front.

  The dash panel 4 is composed of a dash upper panel 11 constituting the upper side and a dash lower panel 12 constituting the lower side.

  The dash upper panel 11 has a front surface portion 11a, a bottom surface portion 11b, and a rear surface portion 11c, and has a bowl-shaped cross section. The upper end of the dash lower panel 12 is joined to the lower surface of the bottom surface portion 11 b of the dash upper panel 11.

  The cowl portion 5 is provided over the entire width in the vehicle width direction and has a so-called open cowl structure in which the upper surface on the front side is open. The cowl portion 5 includes a cowl outer panel 21 and a cowl inner panel 22 and the dash upper panel. 11 is also used.

  The cowl outer panel 21 is a metal panel member and is provided over the entire width in the vehicle width direction, and both left and right ends are joined to the inner surfaces of the upper ends of the left and right hinge pillars 6 and 6. Further, the rear end portion is joined to the upper end portion of the dash upper panel 11 together with the rear end portion of the cowl inner panel 22, and extends substantially horizontally in front of the vehicle from the joined portion to the vicinity of the front end portion of the windshield 7. A portion 21a, a rising portion 21b that rises forward from the front end of the extended portion 21a so as to be substantially perpendicular to the windshield 7, and a front lower portion that extends from the upper end of the rising portion 21b to support the front end portion of the windshield 7. And a glass support portion 21c. And the front-end part of the windshield 7 is being fixed to this glass support part 21c via the adhesive agent 23. FIG.

In this case, the cowl outer panel 21 is a metal panel member, and is extended when an impact load is input to the glass support portion 21c from the front (range from the front in the horizontal direction to a predetermined angle position obliquely upward in the front). In the boundary part (bent part) 21e between the part 21a and the rising part 21b, and in the boundary part (bent part) 21f between the rising part 21b and the glass support part 21c, the sandwiching angles α and β between them become smaller. It is comprised so that it may deform | transform into. Here, the predetermined angular position is a rising angle γ from the horizontal of the rising portion 21b.

  The cowl inner panel 22 is provided only in a predetermined range at the center in the vehicle width direction below the cowl outer panel 21 (see the dotted line in FIG. 1), and has a reverse hat shape with a short cross section. The rear end portion is joined to the upper end portion of the dash upper panel 11 together with the rear end portion of the cowl outer panel 21 as described above, and the front end portion extends downward from the front end of the glass support portion 21c of the cowl outer panel 21. As a result, the cowl outer panel 21 forms a closed cross-sectional structure.

  The reinforcement between the upper surfaces of the left and right suspension towers 8 and 8 extends in the vehicle width direction for the purpose of improving the rigidity of the vehicle body and reinforcing the cowl portion 5, and the left and right end portions are joined to the upper surfaces of the suspension towers 8 and 8. A member 31 is provided. The reinforcing member 31 has a substantially L-shaped cross section, and the upper end portion of the front surface portion 11a of the dash upper panel 11 is joined to the lower surface of the lateral surface portion 31a.

  Near the center of the cowl part 5 in the vehicle width direction, a wiper bracket 50 for attaching the wiper 40 for the windshield 7 to the cowl part 5 is provided.

  The wiper bracket 50 includes a mounting surface portion 50a to which the rotating shaft portion 42 of the wiper arm 41 is fixed, and extends downward from the one side end and front end of the mounting surface portion 50a toward the bottom surface portion 11b of the dash upper panel 11 and has a lower end. The first and second leg portions 50b and 50c are joined to the bottom surface portion 11b, and the lower extension portion 22a extends upward from the rear end of the mounting surface portion 50a and extends downward from the cowl inner panel 22 side. And a third leg portion 50d.

  Next, the operation of the present embodiment will be described.

  That is, as shown in FIG. 3, when an impact load F is input to the windshield 7 from the upper front side (within the above-mentioned range) due to the collision of a pedestrian or the like, that is, the glass of the cowl outer panel 21 through the glass 7. When an impact load is input to the support portion 21c, the rising portion 21b of the cowl outer panel 21 falls backward in a direction in which the included angle α decreases from the boundary portion 21e between the extending portion 21a and the rising portion 21b. The glass support portion 21d, the rising portion 21b, and the extending portion 21a are folded and deformed in a Z shape, and the glass support portion 21d moves rearward and downward. And thereby, the impact added to a pedestrian etc. is absorbed favorably.

According to such a structure, since it is not necessary to deform the dash upper panel 11 for absorbing the shock, it is not necessary to thin the dash upper panel 11 so that it can be bent, and the sound insulation function by the dash upper panel 11 is sufficient. Can get to. As a result, it is not necessary to separately attach a sound insulation article or the like.

In addition, since the boundary portion 21f between the rising portion 21b and the glass support portion 21c is also bent acutely in a direction in which the included angle β is reduced, folding deformation is promoted, and the above-described effect is further ensured.

  Moreover, since the rising part 21b is substantially orthogonal to the windshield 7, the support rigidity with respect to the windshield 7 at normal times can be ensured satisfactorily.

  Further, a cowl inner panel 22 that forms a closed cross section with a portion in the vehicle width direction center predetermined range of the panel 21 is provided below the cowl outer panel 21. The rigidity of the part is improved. Therefore, vibration between the left and right ends of the cowl outer panel 21 is less likely to occur, and noise associated with this vibration is less likely to occur. Further, a sound insulation effect by the cowl inner panel 22 itself can be obtained.

  In that case, since the shock absorbing action is obtained by the deformation of the cowl outer panel 21, even if the cowl inner panel 22 is provided, the shock absorbing action is not hindered.

  Further, since the front portion of the cowl inner panel 22 and a portion below the upper end portion of the dash upper panel 11 are connected by the wiper bracket 50, the cowl outer panel 21 is dashed via the cowl inner panel 22 and the wiper bracket 50. It will be supported by the upper panel 11. Therefore, the support rigidity with respect to the cowl outer panel 21 is improved, and the vibration of the cowl outer panel 21 and the noise associated therewith are further suppressed.

  In that case, since the wiper bracket 50 is originally necessary for attaching the wiper 40 to the cowl portion 5, the upper portion of the front portion of the cowl inner panel 22 and the upper end of the dash upper panel 11 can be obtained without adding a new member. The part below the part can be connected. That is, the vibration of the cowl outer panel 21 and the noise associated therewith can be more satisfactorily suppressed without adding a new member.

  The present invention can be widely applied to the structure of a cowl portion that supports both front glass front end portions.

1 is a front perspective view of a vehicle according to an embodiment of the present invention. It is AA sectional drawing of FIG. FIG. 3 is a view corresponding to FIG. 2 and showing a deformed state of the cowl outer panel when an impact load is applied to the windshield obliquely from the front upper side.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Engine room 3 Cabin 4 Dash panel 5 Cowl part 7 Windshield 11 Dash upper panel 12 Dash lower panel 21 Cowl outer panel (cowl panel)
21a extension portion 21b rising portion 21c glass support portion 22 cowl inner panel 22a downward extension portion 40 wiper 50 wiper bracket (connection member)

Claims (5)

A cowl structure for a vehicle that supports the front end of the windshield,
A cowl panel that supports the windshield front end is provided across the entire width in the vehicle width direction between the upper end of the dash upper panel and the windshield front end.
The cowl panel is arranged on the rear panel of the dash upper panel so that a front-falling glass support that supports the front end of the windshield is movable rearward and downward when an impact load is input to the windshield from the front. An extending portion that is coupled to the end and extends forward from the coupling portion to the lower side of the glass support portion, and a rising portion that rises upward from the front end of the extended portion and is coupled to the rear end portion of the glass support portion. A vehicle cowl part structure characterized in that the rising part is configured to be deformable rearward with respect to a boundary part with the extended part. In the cowl part structure of the vehicle according to claim 1,
2. A cowl structure for a vehicle, wherein the rising portion has a front rising shape and is substantially orthogonal to the windshield surface. In the cowl structure of the vehicle according to claim 1 or 2,
A cowl part structure for a vehicle, wherein a cowl inner panel is provided below the cowl panel so as to form a closed cross section with a predetermined range of the center of the panel in the vehicle width direction. In the cowl structure of the vehicle according to claim 3,
A cowl structure for a vehicle, comprising a connecting member that connects a front portion of the cowl inner panel and a portion below an upper end portion of the dash upper panel. In the cowl part structure of the vehicle according to claim 4,
The vehicle cowl structure according to claim 1, wherein the connecting member includes a wiper bracket that supports the wiper.

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