JP2011037288A - Vehicle cowl part structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle cowl part structure, which takes vibration countermeasures and noise countermeasures of a vehicle body by suppressing rocking deformation at a coupled part of a dash upper panel and a dash lower panel. <P>SOLUTION: The vehicle cowl part structure includes a dash lower panel 3, a dash upper panel 13, and a cowl panel 14 which extends forwardly from an upper part of the dash upper panel 13 to support the lower end of a windshield WS. A dash cross member 8 extending in the vehicle width direction is provided on the upper rear face side of the dash lower panel 3, and a reinforcing bracket 19 which couples the dash cross member 8 with the dash upper panel 13 for reinforcement is provided on a rear part of an intermediate part in the vehicle width direction of the dash cross member 8. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a vehicular cowl structure including a dash lower panel, a dash upper panel, and a cowl panel that extends forward from an upper portion of the dash upper panel and supports a lower end portion of a windshield.

  Some vehicles are provided with a dash panel that extends in the vehicle width direction and partitions the engine room and the vehicle compartment. In the following Patent Document 1, a dash cross member extending in the vehicle width direction is disposed on the upper portion of the dash panel.

  By the way, above the dash panel, a cowl panel that supports the lower end of the front windshield is provided. In recent years, in order to alleviate the impact when a collision object collides with the front part of the vehicle, the cowl box structure including the cowl panel may be a so-called open cowl structure with its upper part opened.

JP 2008-105561 A

  However, in the case of the above-described open cowl structure, there is a problem that if the dash panel is composed of two members, the upper dash upper panel and the lower dash lower panel, the connecting portion swings and deforms in the vehicle longitudinal direction. . In particular, when the rocking deformation occurs in the coupling portion, there is a risk that when the vibration at that time resonates with the vibration of the passenger compartment, the noise becomes loud and uncomfortable to passengers in the passenger compartment.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle cowl structure that can suppress vibration deformation and noise countermeasures in a vehicle body by suppressing swing deformation at a connecting portion between a dash upper panel and a dash lower panel.

  A vehicle cowl structure according to the present invention includes a dash lower panel, a dash upper panel, and a cowl panel extending forward from an upper portion of the dash upper panel and supporting a windshield lower end. A dash cross member extending in the vehicle width direction is provided on the upper rear surface side of the dash lower panel, and the dash cross member and the dash upper are disposed at a rear portion in the vehicle width direction of the dash cross member. A reinforcing bracket is provided to reinforce by joining the panel.

  When the rocking deformation occurs at the connecting portion between the dash lower panel and the dash upper panel, a large vibration is generated particularly at the intermediate portion in the vehicle width direction of the connecting portion. According to this structure, the dash upper panel is coupled to the rear part of the middle part in the vehicle width direction of the dash cross member arranged to improve the rigidity of the front vehicle body, and the swinging part is reinforced by reinforcing the peripheral part thereof. Deformation can be effectively suppressed, and vehicle body vibration countermeasures and noise countermeasures can be achieved.

  In one embodiment of the present invention, a bead that protrudes toward the vehicle interior corresponding to the position of the reinforcing bracket and extends in the vertical direction is formed on the dash upper panel, and the reinforcing bracket is formed on the protrusion of the bead. Correspondingly, it is formed in a cross-sectional hat shape and is provided so as to be continuous with the protrusion of the bead.

  According to this configuration, the dash upper panel and the reinforcing bracket can be firmly coupled in the vertical direction by the cooperation of the bead and the reinforcing bracket without using a vertically long reinforcing bracket.

In manufacturing the front part of the vehicle body, first, the dash lower panel, the dash cross member, and the reinforcing bracket are coupled in advance, and the dash upper panel is coupled to the dash lower panel and the reinforcing bracket in a subsequent process.
Therefore, by suppressing the vertical length of the reinforcing bracket and suppressing the amount of protrusion from the upper end of the dash lower panel, when transporting the dash lower panel after joining the reinforcing bracket, the loading space can be suppressed, Sex can be secured.

  In one embodiment of the present invention, a support bracket for supporting the intermediate portion of the cowl panel in the vehicle width direction on the dash upper panel is provided at a position corresponding to the reinforcing bracket, and the support bracket has a cross-sectional hat. And is joined to the dash upper panel so as to straddle the beads.

  According to this configuration, it is possible to suppress the vibration of the cowl panel while suppressing the rocking deformation in the coupling portion. Then, by joining the support bracket to the dash upper panel so as to straddle the above-described bead, the support bracket having a cross-sectional hat shape can be disposed so as to face the bead and the reinforcement bracket, Reinforcement can be performed more effectively.

  In one embodiment of the present invention, a support bracket is provided for supporting an intermediate portion in the vehicle width direction of the cowl panel on the dash upper panel.

  According to this configuration, it is possible to suppress the vibration of the cowl panel while suppressing the rocking deformation in the coupling portion.

  In one embodiment of the present invention, the dash lower panel is provided with a protrusion that protrudes toward the dash cross member, and a lower end portion of the reinforcing bracket is coupled to the protrusion with the dash cross member interposed therebetween. It is configured.

  According to this configuration, the coupling strength between the reinforcing bracket and the dash lower panel is improved, and as a result, the effects of vehicle body vibration countermeasures and noise countermeasures can be further improved.

  In one embodiment of the present invention, a step portion extending in the vehicle width direction is formed at an upper portion of the dash lower panel, and the dash cross member is provided so as to form a closed cross section with the step portion. The lower end portion of the reinforcing bracket is overlapped and connected to the connecting portion between the dash lower panel and the dash cross member.

  According to this configuration, the coupling strength between the reinforcing bracket and the dash lower panel is improved, and as a result, the effects of vehicle body vibration countermeasures and noise countermeasures can be further improved.

  In one embodiment of the present invention, the dash cross member is connected to at least one of a branch frame branched from the front side frame or a hinge pillar.

  According to this configuration, it is possible to further improve the effects of vehicle body vibration countermeasures and noise countermeasures by using the dash cross member whose rigidity is increased by the connection with the branch frame or the hinge pillar.

  According to the present invention, the dash upper panel is coupled to the rear part of the middle part in the vehicle width direction of the dash cross member disposed to improve the rigidity of the front vehicle body, and the swinging part is reinforced by reinforcing the peripheral part thereof. Deformation can be effectively suppressed, and vehicle body vibration countermeasures and noise countermeasures can be achieved.

The side view which shows the cowl box structure of the vehicle which concerns on embodiment of this invention. The side view which shows the structure of the cowl box periphery of the vehicle of FIG. 1 in the state seen from the vehicle width direction outer side. The perspective view which shows the structure of the cowl box periphery of the vehicle of FIG. 1 in the state seen from back. The perspective view of the principal part of FIG. The perspective view which shows the structure of the cowl box periphery of the vehicle of FIG. 1 in the state seen from the front. The perspective view of the principal part of FIG. FIG. 7 is a cross-sectional view taken along line AA in FIG. 6. The perspective view which shows the state which removed the cowl front member and the cowl front cross member from the state of FIG. FIG. 9 is a sectional view taken along line B-B in FIG. 8. CC sectional view taken on the line of FIG. It is a perspective view from the vehicle interior side which shows the gusset member vicinity, and is a figure which shows the state which removed the hinge pillar inner of the hinge pillar. The perspective view which shows the state which removed the gusset member from the state of FIG. The DD sectional view taken on the line of FIG. The sectional side view which shows the cowl box structure of the vehicle which concerns on other embodiment of this invention. The sectional side view which shows the cowl box structure of the vehicle which concerns on further another embodiment of this invention. The perspective view which shows the cowl box structure of the vehicle which concerns on further another embodiment of this invention in the state seen from the front.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a side view showing a cowl box structure of a vehicle (however, a side view showing a vehicle width direction outer side viewed from an intermediate portion in the vehicle width direction), and FIG. 2 is a periphery of the vehicle cowl box of FIG. FIG. 3 is a perspective view showing the structure around the cowl box of the vehicle in FIG. 1 as seen from the rear, and FIG. 4 is a perspective view of the main part of FIG. 5 is a perspective view showing the structure around the cowl box of the vehicle of FIG. 1 as viewed from the front, FIG. 6 is a perspective view of the main part of FIG. 5, and FIG. 7 is a view taken along line AA in FIG. It is sectional drawing. In the drawing, the arrow (F) indicates the front of the vehicle body, and the arrow (R) indicates the rear of the vehicle body.

  As shown in FIGS. 1 and 2, a pair of left and right hinge pillars 1 and 1 (however, only the right side hinge pillar is shown in the drawings) are provided. The hinge pillar 1 is a vehicle body rigid member having a pillar closed section extending in the vertical direction of a vehicle by joining a hinge pillar inner 2a (see FIG. 1) and a hinge pillar outer 2b (see FIG. 2).

  Further, a dash lower panel 3 is joined and fixed between the left and right hinge pillars 1 and 1, more specifically, between the left and right hinge pillar inners 2a and 2a, and the engine room ER and the vehicle compartment 4 behind the dash lower panel 3 are fixed. The front pillar 5 is joined and fixed to the upper part of the hinge pillar 1 so that the front part is low and the rear part is high.

  A floor panel 6 is joined and fixed to the lower rear end of the dash lower panel 3 described above. This floor panel 6 extends substantially horizontally toward the rear, and constitutes the bottom surface of the passenger compartment 4. As shown in FIG. 3 and FIG. A tunnel portion 7 that protrudes into the passenger compartment 4 and extends in the front-rear direction is integrally formed.

  As shown in FIGS. 1, 3, 4 and 7, a dash cross member 8 having a hat-like cross section extending in the vehicle width direction is joined and fixed to the upper rear surface side of the dash lower panel 3, and this dash cross member is fixed. A dash cross closed section 8a extending in the vehicle width direction is formed between the front panel 8 and the dash lower panel 3 so as to improve the front vehicle body rigidity.

  As shown in FIG. 1, side sills 9 and 9 extending in the front-rear direction of the vehicle are provided on the left and right side portions of the floor panel 6 (however, only the right side configuration is shown in the drawing). The side sill 9 is a vehicle body rigid member having a side sill closed section that joins the side sill inner 10 and the side sill outer and extends in the front-rear direction of the vehicle.

  As shown in the figure, a door opening 11 is formed as a lift for the front seat occupant surrounded by the hinge pillar 1, the front pillar 5, the side sill 9, etc., and this door opening 11 is formed as a front door (not shown). To open and close.

  The front door of the above-mentioned front door is connected to the hinge pillar 1 through a pair of upper and lower door hinges 12 and 12 as shown in FIG.

  By the way, as shown in FIGS. 1 and 3 to 7, a dash upper panel 13 is joined and fixed to the upper bent portion of the dash lower panel 3 described above. As shown in FIG. 7, a rear end portion of a cowl panel 14 that extends forward from the upper portion and supports the lower end portion of the front windshield WS is joined and fixed to the upper portion of the dash upper panel 13. Yes.

  As shown in FIGS. 1 and 7, a cowl front member 15 is provided so as to extend forward from a joint portion between the upper end bent portion of the dash lower panel 3 and the lower end portion of the dash upper panel 13. A cowl front cross member 17 is attached to the upper side of the front portion of the cowl front member 15 so as to form a closed section 16 extending in the vehicle width direction between the front vertical wall portion of the member 15.

  The dash upper panel 13, the cowl panel 14, the cowl front member 15 and the cowl front cross member 17 form a cowl box 18 having a so-called open cowl structure that extends in the vehicle width direction.

  Further, as shown in FIGS. 3 and 5, the dash upper panel 13 is formed with an air inlet 13 a having a substantially rectangular shape at one end side in the vehicle width direction (here, the left end side in the vehicle width direction). The air inlet 13b is connected to an air conditioning unit (not shown) provided on the vehicle compartment 4 side. Further, as shown in FIGS. 3 and 4, a bead 13 b extending in the vertical direction is formed on the rear side of the dash upper panel 13 in the vehicle width direction intermediate portion while protruding toward the vehicle compartment 4 (rear side of the vehicle).

  Further, as shown in FIGS. 3, 4, and 7, a reinforcing bracket 19 is disposed at a rear portion of the dash cross member 8 in the vehicle width direction intermediate portion, corresponding to the position of the bead 13 b. As shown in FIG. 4, the reinforcing bracket 19 has a hat shape in cross section in plan view corresponding to the protrusion of the bead 13 b, and has a central portion 19 a that protrudes toward the vehicle compartment 4 at the central portion in the vehicle width direction. In addition, joint flange portions 19b and 19b are provided on both sides thereof. Among these, the joint flange portions 19b and 19b have upper and lower joint portions 19c and 19d that are wider in the vehicle width direction than other portions.

  Of the joints 19c and 19d described above, the lower joints 19c and 19c are joined to the rear part of the dash cross member 8, while the upper joints 19d and 19d are vehicles of the beads 13b of the dash upper panel 13. It is joined to both sides in the width direction. Thereby, in this embodiment, the vehicle width direction intermediate part of the dash cross member 8 is joined to the dash upper panel 13 via the reinforcement bracket 19, and the peripheral part is reinforced.

  When the reinforcing bracket 19 is joined to the dash upper panel 13, as shown in FIGS. 3 and 4, the protrusion of the central portion 19 a of the reinforcing bracket 19 is in the vertical direction with the protrusion of the bead 13 b of the dash upper panel 13. In FIG.

  Further, a support bracket 20 as shown in FIGS. 4 to 7 is disposed on the front side of the dash upper panel 13 corresponding to the position of the reinforcing bracket 19.

  The support bracket 20 has a hat shape in cross section in plan view, a center portion 20a protruding forward from the dash upper panel 13, and first joint flange portions 20b and 20b located on both sides in the vehicle width direction, It has the 2nd joint flange part 20c located above the center part 20a and the 1st joint flange part 20b.

  Further, the support bracket 20 has leg portions 20d and 20d that connect them between the central portion 20a and the first joint flange portion 20b, and a plurality of beads 20e and 20e are formed in a part thereof. Has been. The upper ends of the legs 20d and 20d are connected by the second joint flange 20c.

  The support bracket 20 is joined to the front surface of the dash upper panel 13 so as to straddle the beads 13b by the first joining flange portions 20b and 20b, and is joined to the lower surface of the cowl panel 14 by the second joining flange portion 20c. ing. Accordingly, the vehicle width direction intermediate portion of the cowl panel 14 is supported by the dash upper panel 13 by the support bracket 20.

  8 is a perspective view showing a state where the cowl front member 15 and the cowl front cross member 17 are removed from the state shown in FIG. 5, FIG. 9 is a sectional view taken along the line B-B in FIG. 8, and FIG. It is CC sectional view taken on the line. In the drawing, the arrow (IN) indicates the inside of the vehicle body, and the arrow (OUT) indicates the outside of the vehicle body.

  As shown in FIGS. 1, 2, 5, and 8, a suspension tower 21 (hereinafter simply referred to as a suspension tower) is disposed at a position spaced forward from the dash lower panel 3.

  Further, as shown in FIG. 8, an extension portion 13 c extending forward is integrally formed on both sides in the vehicle width direction of the above-described dash upper panel 13, and this extension portion 13 c is connected to the suspension tower via a connecting member 22. It is fixed to the rear surface of the top by spot welding means or the like.

As shown in FIGS. 1, 2, 5, 8, and 9, an apron reinforcement 23 that extends forward from the upper portion of the hinge pillar 1 is provided on the outer side in the upper vehicle width direction of the suspension tower 21. .
As shown in FIG. 9, the apron reinforcement 23 mainly includes an apron rain outer 24 and an apron rain inner 25.

A front side frame 26 is connected to the inside of the suspension tower 21 in the lower vehicle width direction, and is provided substantially parallel to the apron reinforcement 23 described above.
The front side frame 26 extends in the vehicle front-rear direction on both sides of the engine room ER and is connected to the suspension tower 21 described above, and the vehicle body rigidity is connected to the front portion of the floor frame 27 with its rear end curved downward. It is a member.

  Further, as shown in FIG. 9, the upper and lower joining flange portions 26 a and 26 b of the front side frame 26 described above are joined and fixed to the side surface portion 21 a of the suspension tower 21 and extend in the front-rear direction. A closed section 28 is formed.

  Further, the front side frame 26 is joined and fixed to the lower portion of the dash lower panel 3 at the position of the dash lower panel 3 as shown in FIGS. 1, 5, and 8.

  A plate 29 (see FIGS. 1 and 2) for attaching a crash box (not shown) configured to compress and deform in the front-rear direction of the vehicle by an impact load from the front is provided at the front end of the front side frame 26. ) Is installed. A plate-like connecting member 30 is attached to the plate 29 so as to straddle the front end portions of the apron reinforcement 23 and the front side frame 26.

  Further, in the present embodiment, a branch frame 31 that extends from the suspension tower installation position α of the front side frame 26 so as to branch upward and rearward and connects the front side frame 26 and the upper portion of the dash lower panel 3 described above. Is provided.

  As shown in FIGS. 1, 2, 5, and 8 to 10, the branch frame 31 is disposed on the outer side in the vehicle width direction of the side surface portion 21a of the suspension tower 21, and is taken along the line BB in FIG. 9 is formed in a substantially U-shaped cross section as shown in FIG. 9, and is formed in a substantially L-shaped cross section as shown in FIG.

  As shown in FIG. 2, the branch frame 31 includes a lower end flange 31 a joined to the front side frame 26, and a longitudinal middle of the branch frame 31 as shown in FIGS. 2, 5, 8, and 9. An intermediate upper flange 31b and an intermediate lower flange 31c that are integrally formed on the upper and lower sides of the section, and a rear end flange 31d that is joined to the dash lower panel 3 as shown in FIG.

  The above-described branch frame 31 is joined to the outer side in the vehicle width direction of the side surface portion 21a of the suspension tower 21, and is closed between the branch frame 31 and the side surface portion 21a and continues in the front-rear direction and the vertical direction (see FIG. 9). ) Is formed.

  That is, in the cross-sectional position taken along line BB shown in FIG. 9, the intermediate upper flange 31b and the intermediate lower flange 31c are joined to the inner surface in the vehicle width direction of the side surface 21a, and the side surface 21a and the branch frame 31 are joined. A closed section 32 is formed between the two.

  On the other hand, in the cross-sectional position taken along the line C-C shown in FIG. ing. Thereby, the branch frame 31 and the dash cross member 8 are connected.

  Moreover, as shown in FIGS. 1, 5, 8, and 10, the branch frame connecting portion β of the dash lower panel 3 (specifically, the portion where the rear end flange 31 d of the branch frame 31 is joined to the dash lower panel 3). Are arranged at substantially the same height as the height at which a gusset member 33 described later is arranged. In the present embodiment, the front end portion of the gusset member 33 and the upper end portion of the branch frame 31 are disposed to face each other via the dash cross member 8.

  FIG. 11 is a perspective view of the vicinity of the gusset member 33 from the vehicle interior side, and shows a state where the hinge pillar inner 2a of the hinge pillar 1 is removed. As shown in FIGS. 1, 3, and 8, the gusset member 33 is disposed on the inner side in the vehicle width direction of the hinge pillar inner 2a. And as shown in FIG. 10, FIG. 11, it has the main-body part 33a of the cross-sectional substantially U shape opened to the vehicle width direction outer side, and the flange part 33b formed in the upper and lower sides of the main-body part 33a, The cross-sectional shape is a hat shape. The gusset member 33 is formed, for example, by processing an iron plate.

  The gusset member 33 is disposed so as to gradually go inward in the vehicle width direction as it goes forward, and the upper ends of the hinge pillar inner 2 a and the branch frame 31 via the dash cross member 8 and the gusset member 33. Are connected to each other.

  Further, a total of two attachment portions 33c and 33d are formed at the front end portion of the gusset member 33 with a space in the vertical direction. The position of the upper mounting portion 33 c is set so as to be the height position of the dash upper panel 13. The lower mounting portion 33 d corresponds to the height position of the dash cross member 8.

  At the rear end portion of the gusset member 33, an attachment portion 33e is formed at a corner portion of the upper flange portion 33b, and an attachment portion 33f extending downward from the lower flange portion 33b is formed. Are connected to the hinge reinforcement 34 shown in FIGS. 11 and 12 by the respective attachment portions 33e and 33f.

  12 is a perspective view showing a state where the gusset member 33 is removed from the state shown in FIG. As shown in FIGS. 11 and 12, the hinge pillar 1 has a hinge pillar reinforcement 2c having a substantially cross-sectional hat shape in plan view on the outer side in the vehicle width direction of the hinge pillar inner 2a. And in the hinge pillar reinforcement 2c, the hinge reinforcement 34 is arrange | positioned in the recessed space inside the vehicle width direction formed when this makes a substantially cross-sectional hat shape.

  As shown in FIG. 12, the hinge reinforcement 34 has a bulging portion 34 a that bulges outward in the vehicle width direction, and is generally opened toward the inner side in the vehicle width direction. It is formed into a cup shape and has excellent rigidity.

  In addition, the hinge reinforcement 34 has a pair of upper and lower attachment portions 34b and 34c at the inner side in the vehicle width direction. The attachment portions 34b and 34c extend from the bulging portion 34a toward the hinge pillar inner 2a, and are attached to the hinge pillar inner 2a.

  Here, of the attachment portions 33e and 33f of the gusset member 33, the attachment portion 33e is a position corresponding to the upper attachment portion 34b of the hinge reinforcement 34. On the other hand, the attachment portion 33f is a position corresponding to the attachment portion 34c on the lower side of the hinge reinforcement 34.

  In the present embodiment, the hinge pillar 1 and the hinge reinforcement 34 and the dash panel (the dash lower panel 3, the dash cross member 8, and the dash upper panel 13) are connected by the gusset member 33.

  The connection between the gusset member 33 and the dash panel is performed as follows. That is, of the attachment portions 33c and 33d at the front end portion of the gusset member 33, the upper attachment portion 33c is attached to the dash upper panel 13 using attachment members 35 such as bolts and nuts. The lower attachment portion 33d is attached to the dash cross member 8 using attachment members 36 such as bolts and nuts.

  The gusset member 33 is connected to the hinge pillar 1 (hinge pillar inner 2a) and the hinge reinforcement 34 as follows. That is, while the hinge pillar inner 2a is sandwiched between the attachment portion 33e of the gusset member 33 and the attachment portion 34b of the hinge reinforcement 34, it is attached using the attachment member 37 such as a bolt or a nut. The mounting portion 33f and the mounting portion 34c of the hinge reinforcement 34 are mounted using mounting members 38 such as bolts and nuts with the hinge pillar inner 2a sandwiched therebetween.

  13 is a cross-sectional view taken along the line DD in FIG. The hinge pillar 1 is provided with door hinge mounting portions 1a and 1a (see FIG. 13) corresponding to the upper and lower door hinges 12. And the body side hinge bracket 39 is attached to the door hinge attaching part 1a in the hinge pillar 1 using attaching members 40 such as bolts and nuts.

  And the hinge attachment part which attached the door side hinge bracket is provided in the front door side. The door side hinge bracket is connected to the body side hinge bracket 39 via a hinge pin so as to be opened and closed, and upper and lower door hinges 12 and 12 are configured.

  Incidentally, as shown in FIG. 1 and the like, when the cowl box 18 has an open cowl structure, swing deformation may occur at the connecting portion between the dash lower panel 3 and the dash upper panel 13. It has been found that large vibrations occur in the middle in the vehicle width direction.

  Accordingly, as in the present embodiment, the dash upper panel 13 is coupled to the rear portion of the middle portion in the vehicle width direction of the dash cross member 8 arranged to improve the rigidity of the front vehicle body, and the peripheral portion thereof is reinforced. Thus, the rocking deformation can be effectively suppressed, and vehicle body vibration countermeasures and noise countermeasures can be achieved.

  Further, a bead 13b is formed on the dash upper panel 13 corresponding to the position of the reinforcing bracket 19, and the protrusion of the central portion 19a of the reinforcing bracket 19 is substantially continuous in the vertical direction with the protrusion of the bead 13b of the dash upper panel 13. By configuring as above, the dash upper panel 13 and the reinforcing bracket 19 can be firmly coupled in the vertical direction by the cooperation of the bead 13b and the reinforcing bracket 19 without using the vertically long reinforcing bracket 19. Can do.

  In manufacturing the front part of the vehicle body, first, the dash lower panel 3, the dash cross member 8, and the reinforcing bracket 19 are coupled in advance, and the dash upper panel 13 is coupled to the dash lower panel 3 and the reinforcing bracket 19 in the subsequent steps. The

  Therefore, as in this embodiment, the upper and lower lengths of the reinforcing bracket 19 are suppressed, and the amount of protrusion from the upper end portion of the dash lower panel 3 is suppressed, so that the dash lower panel 3 after the reinforcing bracket 19 is coupled can be obtained. When transporting, the stacking space can be suppressed, and stackability can be secured.

  Further, by providing the support bracket 20 for supporting the vehicle width direction intermediate portion of the cowl panel 14 to the dash upper panel 13, it is possible to suppress the vibration of the cowl panel 14 while suppressing the swing deformation at the coupling portion. it can.

  Further, the support bracket 20 is disposed at a position corresponding to the reinforcing bracket 19, and the support bracket 20 (first joining flange portions 20b and 20b) is joined to the dash upper panel 13 so as to straddle the beads 13b described above. Thus, the support bracket 20 having a hat-shaped cross section can be disposed so as to face the bead 13b and the reinforcement bracket 19. For this reason, the said coupling | bond part can be reinforced more effectively.

  Further, the rigidity of the dash cross member 8 can be increased by connecting the end portion in the vehicle width direction of the dash cross member 8 to the branch frame 31 branched from the front side frame 26 or to the hinge pillar 1 via the gusset member 33. Can be further enhanced. For this reason, using the dash cross member 8 with increased rigidity, the effects of the above-described vehicle body vibration countermeasure and noise countermeasure can be further improved.

  By the way, in the present invention, as shown in FIGS. 14 and 15, the lower end portion 69 a of the reinforcing bracket 69 may be overlapped and joined to the connecting portion between the dash lower panels 53, 73 and the dash cross members 8, 78. Good. 14 and 15, the same constituent elements as those in the first embodiment shown in FIGS. 1 to 13 are denoted by the same reference numerals and description thereof is omitted.

  In the embodiment shown in FIG. 14, a protrusion 53 a that protrudes toward the dash cross member 8 is provided on a part of the dash lower panel 53, and a reinforcing bracket 69 is provided at the joint between the protrusion 53 a and the dash cross member 8. The lower end portion 69a of the two is polymerized and joined. In other words, the lower end 69a of the reinforcing bracket 69 is configured to be coupled to the protrusion 53a with the dash cross member 8 interposed therebetween. In FIG. 14, two dash cross closed sections 58a and 58a are formed across the protrusion 53a.

  Further, in the embodiment shown in FIG. 15, a step portion 73a extending in the vehicle width direction is formed on the upper portion of the dash lower panel 73, and the dash cross member 78 forms a dash cross closed section 78a with the step portion 73a. It is provided to do. The lower end portion 69 a of the reinforcing bracket 69 is overlapped and connected to the connecting portion between the dash lower panel 73 and the dash cross member 78.

  Here, the lower end 69a of the reinforcing bracket 69 shown in FIGS. 14 and 15 is joined to the connecting portion between the dash lower panels 53, 73 and the dash cross members 8, 78, while the upper end 69b is both It is joined to the upper end of the dash upper panel 13.

  As shown in FIGS. 14 and 15, the reinforcing bracket 69 and the dash lower panels 53, 73 are joined by overlapping and joining the reinforcing bracket 69 to the connecting portion between the dash lower panels 53, 73 and the dash cross members 8, 78. The coupling strength is improved, and as a result, the effects of vehicle body vibration countermeasures and noise countermeasures can be further improved.

  In the present invention, a plurality of support brackets 80, 80,... Shown in FIG. In the embodiment shown in FIG. 16, a long plate-like support bracket 80 is used, and its lower end is joined to the front surface of the dash upper panel 13. The support bracket 80 extends obliquely forward from the joint portion of the dash upper panel 13, and its upper end portion is joined to the lower surface portion of the cowl panel 14.

  With such a configuration, the support strength required for each support bracket 80 can be kept low, and when the collision body collides with the front portion of the vehicle, the deformation of the cowl panel 14 is promoted, and the collision The impact on the body can be further reduced.

  In the above-described embodiment, the dash cross member 8 is coupled to the branch frame 31 and the hinge pillar 1, but the present invention is not necessarily limited thereto, and it is only necessary to couple at least one of them.

In correspondence between the configuration of the present invention and the above-described embodiment,
The cowl portion of the vehicle of the present invention corresponds to the cowl box 18,
The closed cross section corresponds to the dash cross closed cross section 78a,
The present invention is not limited only to the configuration of the above-described embodiment, and many embodiments can be obtained.

DESCRIPTION OF SYMBOLS 1 ... Hinge pillar 3, 53, 73 ... Dash lower panel 4 ... Cascade 8, 78 ... Dash cross member 13 ... Dash upper panel 13b ... Bead 18 ... Cowl box 19, 69 ... Reinforcement bracket 20, 80 ... Support bracket 26 ... Front side Frame 31 ... Branch frame 53a ... Projection 73a ... Stepped portion 78a ... Dash cross closed section WS ... Windshield

Claims (7)

A dash lower panel,
A dash upper panel,
A cowl structure of a vehicle including a cowl panel extending forward from an upper portion of the dash upper panel and supporting a lower end portion of the windshield,
A dash cross member extending in the vehicle width direction is provided on the upper rear side of the dash lower panel,
A vehicle cowl structure in which a reinforcing bracket for connecting and reinforcing the dash cross member and the dash upper panel is provided at a rear portion of the dash cross member in the vehicle width direction. A bead that protrudes toward the vehicle interior side corresponding to the position of the reinforcing bracket and extends in the vertical direction is formed on the dash upper panel,
2. The vehicle cowl structure according to claim 1, wherein the reinforcing bracket is formed to have a cross-sectional hat shape corresponding to the protrusion of the bead and is continuous with the protrusion of the bead. A support bracket for supporting the vehicle width direction intermediate portion of the cowl panel on the dash upper panel is provided at a position corresponding to the reinforcing bracket;
The vehicle cowl structure according to claim 2, wherein the support bracket is formed in a hat shape in cross section and is joined to the dash upper panel so as to straddle the bead. The vehicle cowl structure according to claim 1 or 2, further comprising a support bracket that supports an intermediate portion of the cowl panel in the vehicle width direction on the dash upper panel. The dash lower panel is provided with a protrusion protruding toward the dash cross member side,
The vehicular cowl structure according to any one of claims 1 to 4, wherein a lower end portion of the reinforcing bracket is configured to be coupled to the protrusion with the dash cross member interposed therebetween. A step portion extending in the vehicle width direction is formed on the upper portion of the dash lower panel,
The dash cross member is provided so as to form a closed cross section with the stepped portion;
The vehicle cowl structure according to any one of claims 1 to 4, wherein a lower end portion of the reinforcing bracket is overlapped and connected to a connecting portion between the dash lower panel and the dash cross member. The cowl structure of a vehicle according to any one of claims 1 to 6, wherein the dash cross member is connected to at least one of a branch frame branched from a front side frame or a hinge pillar.

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