JP6592799B2 - Body front structure - Google Patents

Description

  The present invention relates to a vehicle body front structure.

  A pair of damper housings for accommodating the dampers of the suspension device are arranged on the left and right sides of the power mounting chamber such as the engine room of the vehicle. A thick damper base that supports the upper portion of each damper is attached to the upper portion of the damper housing. The damper housing is disposed inside the upper member that extends forward from the left and right front pillars to the front of the vehicle body, and constitutes a side wall of the power mounting chamber.

  In such a vehicle, a vehicle has been devised in which the rigidity of members around the damper base is increased so that a traveling load input from the damper can be supported with high rigidity on the vehicle body side (for example, Patent Document 1). , 2).

  In the vehicle body front part structure described in Patent Document 1, a reinforcing member for connecting the front wall and the rear wall of the dashboard upper is fixed to the upper opening of the dashboard upper arranged at the rear part of the damper base, and the front A reinforcing member that reinforces the cross section from the inside is attached to the upper member that extends forward from the pillar.

  Further, in the vehicle body front structure described in Patent Document 2, a plurality of gussets for cross-sectional reinforcement are attached to the inside of an upper member that extends forward from the front pillar and supports the damper base so as to be spaced apart in the extending direction. Yes.

JP 2000-280935 A JP 2008-37337 A

  The vehicle body front structures described in Patent Documents 1 and 2 both support the traveling load input to the damper base with high rigidity on the vehicle body side by reinforcing the cross section of the upper member with another member attached inside. Can do. However, in any of the front and rear structures of the vehicle body, the damper base is connected to the lower end portion of the upper member in the vehicle width direction, so that the traveling load input to the damper base can be used effectively in the cross section of the upper member. It cannot be said that it is accepted.

  Accordingly, the present invention is intended to provide a vehicle body front structure that can effectively use a cross section of an upper member to support a traveling load input to a damper base with high rigidity by the upper member.

The vehicle body front structure according to the present invention employs the following configuration in order to solve the above-described problems.
That is, an upper member (for example, the upper member 9 of the embodiment) extending from the front pillar (for example, the front pillar 75 of the embodiment) to the front of the vehicle body, and a vehicle power mounting chamber ( For example, a damper housing (for example, the damper housing 10 of the embodiment) that constitutes the side wall of the engine room 2) of the embodiment and accommodates the damper of the suspension device, and the damper housing is fixed to the upper portion of the damper housing. A damper base (for example, the damper base 11 of the embodiment), a high-rigidity rear wall member (for example, the rear wall member 55 of the embodiment) that is coupled to the rear edge of the damper base and covers the rear of the damper. A partition member disposed inside the upper member to reinforce a cross section of the upper member (for example, the partition member according to the embodiment) 8), and the upper member has an inner flange (for example, the inner flange 56 of the embodiment) extending inward in the vehicle width direction, and the rear wall member is located on the inner side in the vehicle width direction of the upper member. A vertical wall portion (for example, the vertical wall of the embodiment) that is disposed at a height that wraps in the vertical direction with the upper member and that is connected to the inner flange at a position aligned with the partition member in the upper member in the vehicle width direction. Part 55-a).

  In this case, the traveling load input from the damper to the damper base is transmitted to the inner flange of the upper member via the highly rigid rear wall member coupled to the rear edge portion of the damper base. The traveling load input to the inner flange is transmitted to the inner wall of the upper member in the vehicle width direction, and is arranged on the upper member via the partition wall member arranged in alignment with the vertical wall portion of the rear wall member in the vehicle width direction. It is also transmitted to other walls. Therefore, the traveling load input to the damper base is efficiently transmitted to the entire cross section of the upper member.

  A hood mounting member (for example, the hood hinge stiffener 50 and the hood damper bracket 51 of the embodiment) fixed to the upper member and to which a hood that can be freely opened and closed is provided, and the partition member and the damper base in the upper member are The structure couple | bonded via the hood attachment member may be sufficient.

  In this case, the damper base is coupled to the upper member via the highly rigid rear wall member, and is coupled to the partition member in the upper member via the highly rigid hood mounting member. For this reason, the traveling load input to the damper base is efficiently transmitted to the entire cross-section of the upper member. Therefore, by adopting this configuration, it becomes possible to support the traveling load input to the damper base to the upper member with high rigidity.

  A windshield lower (for example, the windshield lower 13 of the embodiment) that supports the lower end of the windshield glass on the rear upper end side of the power loading chamber, and a projecting projection on the inner side in the vehicle width direction of the upper member, A hood hinge stiffener that further includes a connecting member (for example, the connecting bracket 60 of the embodiment) having higher rigidity than the shield lower, and the hood attaching member is attached to the upper member to reinforce the hood hinge attaching portion of the upper member. (For example, the hood hinge stiffener 50 of the embodiment), and the hood hinge stiffener is connected to a hood hinge connection portion (for example, the hood hinge connection portion 50A-1 of the embodiment) to which the hood hinge is connected above the upper member. In the vehicle width direction inner area of the rear edge, A windshield lower connecting portion (for example, the windshield lower connecting portion 50C-4 of the embodiment) connected to the outer edge in the vehicle width direction of the door shield lower, and a damper base connecting portion connected to the damper base at the front edge portion (For example, the damper base connecting portion 50C-5 of the embodiment) and a connecting member connecting portion (for example, the connecting member connecting portion 50C-6 of the embodiment) connected to the connecting member in the vehicle width direction outer side region of the rear edge portion. ).

  In this case, the hood hinge stiffener attached to the upper member is connected to the damper base at the damper base connecting portion at the front edge, and at the end of the wind shield lower at the wind shield lower connecting portion and the connecting member connecting portion at the rear edge. It is connected to the edge and the connecting member. The connecting member to which the rear edge portion of the hood hinge stiffener is connected protrudes from the inner side surface of the upper member in the vehicle width direction and is set to have higher rigidity than the windshield lower. For this reason, the longitudinal and lateral components of the traveling load input from the damper base to the hood hinge stiffener are transmitted from the rear edge of the hood hinge stiffener mainly to the upper member via the connecting member. For this reason, it is difficult to input a traveling load from the hood hinge stiffener to the thin windshield lower side. Therefore, by adopting this configuration, it is possible to effectively increase the support rigidity of the damper base by the hood hinge stiffener while avoiding stress concentration at the joint around the windshield lower.

  The rear portion of the damper housing is provided with a side wall constituting portion (for example, the side wall 2a of the embodiment) constituting the side wall of the power mounting chamber at a position spaced inward in the vehicle width direction with respect to the upper member. A horizontal bending flange bent in the upper member direction (for example, the horizontal bending flange 57 of the embodiment) is formed at the top of the portion, and the rear wall member is a bottom bent substantially horizontally at the lower end of the vertical wall portion. It has a wall part (for example, bottom wall part 55-b of an embodiment), and the bottom wall part of the back wall member is good also as composition connected to the horizontal bending flange of the side wall constituent part. .

  In this case, the rear wall member joined to the rear edge portion of the damper base is connected to the inner flange of the upper member in the vertical wall portion, and the horizontal wall portion of the side wall constituting portion located away from the upper member in the bottom wall portion. Connected to the bending flange. For this reason, the rear wall member is restrained in the front-rear direction and the vertical direction by the inner flange and the horizontal bending flange, and is prevented from falling or deforming. Therefore, by adopting this configuration, the damper base can be supported with higher rigidity through the rear wall member.

  A sound insulating member (for example, the sound insulating member 59 of the embodiment) that closes the cross section of the upper member may be attached to the partition member.

  In this case, noise passing through the cross section from the front side of the upper member can be blocked by the sound insulating member.

  The upper member includes an upper member body having a substantially U-shaped cross section that opens outward in the vehicle width direction (for example, the upper member body 9A of the embodiment), and an upper member lid that is coupled to the upper member body so as to close the opening of the upper member body. A member (for example, the upper member lid member 9B of the embodiment), the upper member lid member has a bonding hole (for example, the bonding hole 30 of the embodiment), and the partition member is An upper flange (for example, the upper flange 58f-1 in the embodiment), an inner flange (for example, the inner flange 58f-2 in the embodiment), and a lower flange (for example, in the embodiment) joined to the upper wall, the side wall, and the lower wall of the upper member main body. And the lower flange 58f-3) of the embodiment, and an outer flange that is joined to the joining hole of the upper member lid member ( In example may be configured to have an outer flange 58f-4) embodiments.

  In this case, in the partition member, the upper flange, the inner flange, and the lower flange are joined to the upper wall, the side wall, and the lower wall of the upper member main body, and the outer flange is joined to the wall of the upper member lid member through the joining hole. Is done. Therefore, since the partition member is fixed to the four walls in the upper member, the cross-sectional rigidity of the upper member is further increased. Further, since the partition member is joined to the upper member lid member through the hole for joining the upper member lid member, the partition member is joined to the three walls of the upper member body, and the opening of the upper member body is closed with the upper member lid member. Later, it can be easily joined to the upper member lid member from the outside by MIG welding or the like.

  The upper member includes an upper member body having a substantially U-shaped cross section that opens outward in the vehicle width direction (for example, the upper member body 9A of the embodiment), and an upper member lid that is coupled to the upper member body so as to close the opening of the upper member body. A member (for example, the upper member lid member 9B of the embodiment), and the upper member main body has inclined sides (inclined inward in the vehicle width direction from the front to the rear at the rear end portions of the upper wall and the lower wall). For example, the embodiment includes the inclined sides 31u and 31l) and the inclined flanges (for example, the inclined flanges 32u and 32l of the embodiment) that are bent in the vertical direction from the respective inclined sides. A rear end extension that extends beyond the inclined side of the upper member body to the rear of the vehicle body and is coupled to the outer wall of the front pillar in the vehicle width direction ( For example, the rear end extension portion 9B-e) of the embodiment is provided, and the upper and lower sides of the rear end extension portion are provided with the inclined flanges of the upper wall and the lower wall of the upper member main body and the front wall of the front pillar. An upper connecting piece (for example, the upper connecting piece 33u in the embodiment) and a lower connecting piece (for example, the lower connecting piece 33l in the embodiment) may be connected in series.

  In this case, the upper member lid member for closing the outer side in the vehicle width direction of the upper member body is coupled to the outer wall on the outer side in the vehicle width direction of the front pillar at the rear end extension, and the rear end portions of the upper wall and the lower wall of the upper member body The inclined flanges formed on the front pillar are connected to the front wall of the front pillar via the upper connecting piece and the lower connecting piece. For this reason, the rear part of the upper member main body is joined to the front pillar side through the inclined flange with a sufficiently long joining distance. Therefore, by adopting this configuration, it is possible to increase the support rigidity of the upper member and to support the traveling load input to the damper base with high rigidity on the skeleton of the vehicle body.

  The upper member includes an upper member body having a substantially U-shaped cross section that opens outward in the vehicle width direction (for example, the upper member body 9A of the embodiment), and an upper member lid that is coupled to the upper member body so as to close the opening of the upper member body. A member (for example, the upper member lid member 9B of the embodiment), and the upper member main body is a front side member (for example, the front side member 9A- of the embodiment) to which the damper base is coupled to the inner side in the vehicle width direction. 1) and a rear side member joined to the rear part of the front side member (for example, the rear side member 9A-2 of the embodiment), and the inner flange is a rear end of the front side member The partition wall member is disposed inside the rear side member, the vertical wall portion of the rear wall member is joined to the rear surface of the inner flange, and the vehicle compartment and the power mounting chamber are separated. Datsu Yubodoappa (e.g., dashboard upper 12 embodiment) vertical wall (e.g., the vertical wall 12Af embodiments) may be configured to be disposed to face the rear surface of the vertical wall portion.

  In this case, the damper base is coupled to the front side member of the upper member main body via the rear wall member and the inner flange, and the partition wall member is disposed inside the rear side member of the upper member main body, so that the vertical wall of the dashboard upper Is disposed opposite the rear surface of the vertical wall portion of the rear wall member, so that the vertical wall of the dashboard upper can be aligned with the vertical wall portion of the rear wall member in the vehicle width direction with respect to the partition wall member. . Therefore, by adopting this configuration, the vehicle body rigidity can be further increased.

  A hood hinge stiffener (for example, the hood hinge stiffener 50 of the embodiment) that is attached to the upper member and reinforces the hood hinge attachment portion of the upper member, and the hood hinge stiffener is connected to the damper base. (For example, the damper base connection part 50C-5 of the embodiment), and the left and right ends of the dashboard upper in the vehicle width direction are connected to the corresponding left and right damper bases via the hood hinge stiffeners. It is good also as the structure currently made.

  In this case, since the left and right ends of the dashboard upper in the vehicle width direction are joined to the damper base via the rigid hood hinge stiffener, the traveling load input to the damper base is directly applied to the dashboard upper. It will not be entered. Therefore, when this configuration is adopted, even when the dashboard upper is thinned to reduce the weight, stress concentration is less likely to occur at the joint portion with each part of the dashboard upper.

  According to the present invention, the traveling load input to the damper base is transmitted to the inner flange of the upper member via the highly rigid rear wall member, and the vertical wall of the rear wall member, the inner flange of the upper member, and the interior of the upper member Therefore, the traveling load input to the damper base can be supported with high rigidity by effectively using the cross section of the upper member.

It is a front view of the front part side frame part of the vehicles concerning one embodiment of this invention. It is a perspective view of the front part side frame part of the vehicles concerning one embodiment of this invention. It is the perspective view which removed some components of the front part side frame part of the vehicles concerning one embodiment of this invention. It is the perspective view which removed some components of the front part side frame part of the vehicles concerning one embodiment of this invention. It is the perspective view which fractured | ruptured the front part side frame | skeleton part of the vehicle which concerns on one Embodiment of this invention along the vehicle body front-back direction. It is a perspective view of the front part side frame part of the vehicles concerning one embodiment of this invention. It is the perspective view which expanded and showed a part of front part side frame part of the vehicle concerning one embodiment of this invention. It is sectional drawing which follows the VIII-VIII line of FIG. 6 of the vehicle which concerns on one Embodiment of this invention. It is sectional drawing which follows the IX-IX line of FIG. 5 of the vehicle which concerns on one Embodiment of this invention. It is sectional drawing which follows the XX line of FIG. 5 of the vehicle which concerns on one Embodiment of this invention. It is a perspective view of the front part side frame part of the vehicles concerning one embodiment of this invention. It is sectional drawing which follows the XII-XII line | wire of FIG. 11 of the vehicle which concerns on one Embodiment of this invention. It is sectional drawing which follows the XIII-XIII line | wire of FIG. 11 of the vehicle which concerns on one Embodiment of this invention. It is sectional drawing which follows the XIV-XIV line | wire of FIG. 11 of the vehicle which concerns on one Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a view of a skeleton portion on the front side of a vehicle 1 according to the embodiment as viewed from the front side of the vehicle body, and FIG. It is a figure.
Reference numeral 2 in the figure denotes an engine room which is a form of a power mounting room disposed in front of the passenger compartment. When a motor is used as a power source, this area is a motor room. On both sides in the vehicle width direction at the lower part of the engine room 2, front side frames 4 extending substantially along the vehicle body longitudinal direction are arranged.

  Further, upper members 9 that are curved and extend from the front pillars 75 on the left and right sides of the vehicle body toward the lower front portion of the vehicle body are connected to both sides in the vehicle width direction at the upper part of the engine room 2. The front end portion of each upper member 9 is curved and extends to the vicinity of the front end portion of the front side frame 4. The left and right upper members 9 are arranged offset from the left and right front side frames 4 to the outside in the vehicle width direction. A front end portion of each upper member 9 is coupled to a front end portion of the front side frame 4 via a connecting member 7.

  A damper housing 10 that houses an upper portion of a damper (shock absorber) of a front suspension device (not shown) is attached to the inner surface of the left and right upper members 9 near the rear portion. The damper housing 10 is made of a press-molded metal plate, and includes a side wall 10a in the vehicle width direction of the upper member 9 and a side wall 10a that surrounds the periphery of the damper together with a rear wall member 55 described later. The upper end portion of the damper housing 10 opens upward, and a damper base 11 made of a thick metal plate that supports the upper end portion of the damper is attached to the opening portion. The upper end portion of the damper is fixed to the corresponding damper base 11 by bolt fastening or the like.

  The lower edge part of the inner side area in the vehicle width direction of the side wall 10a of the damper housing 10 is inclined toward the inner side in the vehicle width direction, and the lower end part thereof is coupled to the outer side surfaces of the corresponding left and right front side frames 4.

  A hood hinge 49 for attaching an engine hood (not shown) so as to be openable and closable is attached to the upper surface of the base portion (rear region) of the left and right upper members 9. A hood hinge stiffener 50 for reinforcing the hood hinge attachment portion is attached to the hood hinge attachment portion on the upper surface of the upper member 9. Further, a hood damper bracket 51 for supporting one end of a hood damper (not shown) is attached to the side surface in the vehicle width direction on the front side of the hood hinge attachment portion of the upper member 9.

FIG. 3 is a view in which the hood hinge stiffener 50 is removed, and a part of the skeleton portion on the right side of the front portion of the vehicle 1 is viewed obliquely from the upper left.
A windshield lower 13 that supports a lower end portion of a windshield glass (not shown) and a dash that separates the vehicle compartment and the engine room 2 on the lower side of the front portion of the windshield lower 13 are disposed at the upper rear side of the engine room 2. A board upper 12 is disposed. The windshield lower 13 and the dashboard upper 12 are constituted by thin metal plates.

FIG. 4 is a view of the hood hinge stiffener 50 and the windshield lower 13 removed, and a part of the skeleton portion on the right side of the front portion of the vehicle 1 as viewed from above in the vehicle width direction.
The dashboard upper 12 has a concave portion 53 surrounded by a front vertical wall 12Af and a rear vertical wall 12Ar. The concave portion 53 has a U-shaped cross section that opens upward and continues in the vehicle width direction. The bottom of the concave shaped portion 53 is a drainage channel 53a for guiding water droplets such as rain water to the outside in the vehicle width direction and discharging it downward in the vehicle body. An air conditioner intake port 54 is formed in an inner region in the vehicle width direction of the rear vertical wall 12Ar.

  Further, the dashboard upper 12 has a front upper wall 12B bent forward at the upper end of the front vertical wall 12Af and a rear portion bent rearward at the upper end of the rear vertical wall 12Ar. An upper wall 12C is continuously provided. The outer end in the vehicle width direction of the rear upper wall 12C and the rear vertical wall 12Ar of the dashboard upper 12 is connected to the inner surface of the upper member 9 and the side wall of the engine room 2 via a strip-shaped connecting plate 52. Yes.

  The damper base 11 is made of a metal plate having a thickness of about 2 to 3 times that of the damper housing 10, and includes a damper base upper wall 11-a having a fastening hole 15 (damper fixing portion) for fastening the upper end of the damper with a bolt, and a damper. Bends are provided at the peripheral edge of the base upper wall 11-a so as to be stepped, and are bent downward from the shelf portion 11-b lower than the damper base upper wall 11-a and the outer edge of the shelf portion 11-b. The housing 10 and the side wall part 11-c which is inserted in the upper end part of the rear wall member 55, and is fixed by welding are provided.

  The front upper wall 12 </ b> B of the dashboard upper 12 is formed such that the edges on both sides in the vehicle width direction have a narrow front-rear width, and the vehicle width direction inner region has a wide front-rear width. A cross member 14 (see FIGS. 2 and 4) having a hat-like cross section that opens upward is joined to the lower surface of the front upper wall 12B near the front of the wide area having a wide front and rear width. The outer edge of the cross member 14 in the vehicle width direction is joined to the upper surface of the shelf portion 11-b of the left and right damper bases 11.

FIG. 5 is a view in which the skeleton portion on the left side of the front portion of the vehicle 1 is broken along the longitudinal direction of the vehicle body and is viewed from above the right front portion. FIG. It is the figure seen from.
A thick and high-rigidity rear wall member 55 that covers the rear side of the damper is joined to the rear edge of the shelf 11-b and the rear side wall 11-c of the damper base 11. The rear wall member 55 extends on the rear side of the damper substantially along the vehicle width direction, and bends and extends substantially perpendicularly to the rear side from the lower end of the vertical wall portion 55-a. And a bottom wall portion 55-b.

  An inner flange 56 protruding toward the inner side in the vehicle width direction is projected from a portion adjacent to the rear end of the damper base 11 on the inner wall of the upper member 9 in the vehicle width direction. The inner flange 56 extends in a direction substantially orthogonal to the longitudinal direction of the vehicle body. The vertical wall portion 55-a of the rear wall member 55 is joined to the rear surface of the inner flange 56.

  As shown in FIG. 6, a side wall 2 a (side wall constituent member) of the engine room 2 is disposed on the rear side of the damper housing 10 at a predetermined distance from the inner side in the vehicle width direction of the upper member 9. At the upper end of the side wall 2a, a horizontal bending flange 57 is formed that is bent substantially at right angles to the upper member 9 direction. The bottom wall portion 55-b of the rear wall member 55 is joined to the upper surface of the horizontal bending flange 57.

  A curved wall portion 55-c that extends substantially along the rear-side curved portion on the inner side in the vehicle width direction of the damper base 11 extends from the end portion on the inner side in the vehicle width direction of the vertical wall portion 55-a of the rear wall member 55. . The curved wall portion 55-c is joined to the side wall portion 11-c at the rear side curved portion of the damper base 11.

FIG. 7 is an enlarged view showing a joint portion between the rear wall member 55 and the hood hinge stiffener 50 with respect to the damper base 11, and FIG. 8 is a view showing a cross section taken along line VIII-VIII in FIG.
As shown in FIGS. 3 to 5, 7, and 8, an upper wall portion 55-d that bends forward is extended at the upper end portion of the vertical wall portion 55-a of the rear wall member 55. The upper wall portion 55-d is joined to the upper surface of the shelf portion 11-b of the damper base 11.

  Further, as shown in FIG. 6, a partition wall member 58 for reinforcing the cross section of the upper member 9 is attached at a position aligned with the vertical wall portion 55-a of the rear wall member 55 inside the upper member 9 in the vehicle width direction. It has been. Reference numeral 59 in FIG. 6 denotes a sound insulating member supported by the partition member 58 inside the upper member 9. The sound insulating member 59 closes the inside of the upper member 9 and blocks noise transmission through the inside of the upper member 9.

  By the way, as shown in FIGS. 3 and 4, a connecting bracket 60 (connecting member) having rigidity higher than that of the windshield lower 13 protrudes from the inner surface in the vehicle width direction of the base portion (rear part) of the left and right upper members 9. It is installed. The connection bracket 60 is made of a metal plate that is thicker than the windshield lower 13, and is attached to the inner side surface of the upper member 9 and extends inward in the vehicle width direction from the upper portion of the attachment wall 60-a. And a support wall 60-b to be taken out. The support wall 60-b has a stepped shape that is bent in a plurality of steps in the longitudinal direction of the vehicle body. As shown in FIG. 3, the outer edge of the windshield lower 13 in the vehicle width direction is joined to the upper portion of the support wall 60-b.

  As shown in FIG. 2, the hood hinge stiffener 50 attached to the left and right upper members 9 includes a base wall 50A that is overlapped with the upper surface of the upper member 9 and joined to the upper member 9, and one of the upper surfaces of the base wall 50A. The part is a hood hinge connecting part 50A-1 to which the hood hinge 49 is connected by bolt fastening. Bolt insertion holes (not shown) into which fastening bolts 48 (see FIG. 3) are inserted are formed in the hood hinge connection portion 50A-1. In this embodiment, the bolt insertion hole in the hood hinge connection portion 50 </ b> A- 1 and its peripheral edge portion are fixed portions that are fastened and fixed to the upper surface of the upper member 9 together with the hood hinge 49.

  A hanging wall 50B along the side surface on the inner side in the vehicle width direction of the upper member 9 is connected to the end portion on the inner side in the vehicle width direction of the base wall 50A of the hood hinge stiffener 50, and extends inward in the vehicle width direction to the lower end of the hanging wall 50B. An extending inner extending wall 50C is extended. The inner extending wall 50C is connected to the shelf 50C-1 projecting outward in the vehicle width direction from the lower end of the hanging wall 50B, and connected to the inner side in the vehicle width direction of the shelf 50C-1, and lower than the shelf 50C-1. And a bent portion 50C-2 bent so as to form a stepped surface.

  In the lower wall 50C-3 of the bent portion 50C-2 of the hood hinge stiffener 50, the region excluding the front end region is inclined downward toward the front side of the vehicle body. The front end region of the lower wall 50 </ b> C- 3 includes a rear inclined portion 61 that is inclined downward and a drain hole 62 formed in a lower portion of the rear inclined portion 61.

  Further, as shown in FIG. 8, a portion of the front upper wall 12 </ b> B of the dashboard upper 12 that has a narrow front-rear width on the outer side in the vehicle width direction is formed on the lower surface of the front inclined portion 61 of the rear inclined portion 61. It is joined. Below the drainage hole 62, a drainage channel 53a provided in the concave portion 53 of the dashboard upper 12 is disposed. An upper rear side region of the vertical wall 12Af on the front side of the dashboard upper 12 faces directly below the drain hole 62. As shown in FIG. 4, a water droplet guiding groove 64 extending in the direction of the drainage channel 53a is formed in the upper rear surface side region of the front vertical wall 12Af. The water droplet guiding groove 64 guides water droplets such as rainwater dropped downward through the drain hole 62 toward the drain channel 53a.

  Further, as shown in FIG. 2, the vehicle width direction inner side region of the rear edge of the inner extension wall 50 </ b> C of the hood hinge stiffener 50 is overlapped with the outer edge of the windshield lower 13 in the vehicle width direction. The windshield lower connecting portion 50 </ b> C- 4 is joined to the windshield lower 13. The windshield lower connecting portion 50C-4 is disposed on the lower wall 50C-3 side of the bent portion 50C-2 in the inner extending wall 50C. In the case of this embodiment, at least a part of the windshield lower connecting portion 50C-4 is overlapped and fixed to the connecting portion of the windshield lower 13 and the dashboard upper 12 by welding. On the other hand, the front end portion of the lower wall 50C-3 of the inner extending wall 50C is a damper base connecting portion 50C-5 joined to the upper surface of the shelf portion 11-b of the damper base 11. Further, the vehicle width direction outer side region of the rear edge portion of the inner extending wall 50C of the hood hinge stiffener 50 is a connecting member connecting portion 50C-6 joined to the support wall 60-b of the connecting bracket 60. ing.

FIG. 9 is a view showing a cross section taken along line IX-IX of FIG.
As shown in the figure, the hood damper bracket 51 that supports the hood damper has a joining piece 51 </ b> A that is joined to the inner side surface of the upper member 9 in the vehicle width direction. The joining piece 51A is formed in a shallow, substantially hat-shaped cross-sectional shape, and its bottom wall portion 51A-1 is overlapped with the side surface of the upper member 9 in the vehicle width direction, and the side surface of the upper member 9 and the inside of the upper member 9 Are fixed to the partition wall member 58 by welding. Further, the flange portions 51 </ b> A- 2 before and after the joining piece 51 </ b> A are fixed to the hanging wall 50 </ b> B of the hood hinge stiffener 50 by welding. Therefore, the front edge portion of the hanging wall 50 </ b> B of the hood hinge stiffener 50 is coupled to the upper member 9 and the partition member 58 inside thereof via the joining piece 51 </ b> A of the hood damper bracket 51.
The hanging wall 50B of the hood hinge stiffener 50 is provided with a notch 50B-1 for welding and fixing the bottom wall 51A-1 of the joining piece 51A to the upper member 9 and the partition member 58.

FIG. 10 is a view showing a cross section taken along the line XX of FIG. 5, and FIG. 11 is a view of the left skeleton portion of the vehicle 1 as viewed from the upper left side. 12 is a diagram showing a cross section taken along line XII-XII in FIG. 11. FIGS. 13 and 14 are cross sections taken along line XIII-XIII in FIG. 11 and along line XIV-XIV in FIG. It is a figure which shows a cross section.
Each of the left and right upper members 9 includes an upper member main body 9A having a substantially U-shaped cross section that opens outward in the vehicle width direction, and an upper member lid member joined to the upper member main body 9A so as to close the opening of the upper member main body 9A from the outer side in the vehicle width direction. 9B. The upper member lid member 9B is formed by joining flanges 9B-f bent at substantially right angles at upper and lower ends. The upper member lid member 9B is joined to the upper member main body 9A by upper and lower joining flanges 9B-f.

  The upper member main body 9A is configured such that a front side member 9A-1 and a rear side member 9A-2 having a substantially U-shaped cross section are joined to each other so as to be continuous in the longitudinal direction. The damper base 11 is coupled to the side surface of the front side member 9A-1 closer to the rear portion, and the inner flange 56 is bent inward in the vehicle width direction at the rear end portion of the front side member 9A-1. It is integrally formed. The partition member 58 and the sound insulation member 59 are attached to the inner side of the rear side member 9A-2. And the vertical wall part 55-a of the rear wall member 55 is joined to the rear surface of the inner flange 56 provided in the rear-end part of the front side member 9A-1 as mentioned above. As shown in FIG. 10, the front vertical wall 12 </ b> Af of the dashboard upper 12 is disposed on the rear surface of the vertical wall portion 55-a of the rear wall member 55 so as to face each other.

  Here, the partition member 58 disposed inside the upper member 9 is formed of a substantially rectangular metal plate, and is joined to the upper wall, the side wall, and the lower wall of the upper member main body 9A on each peripheral side. An upper flange 58f-1, an inner flange 58f-2, a lower flange 58f-3, and an outer flange 58f-4 joined to the upper member lid member 9B. As shown in FIG. 12, the inner flange 58f-2 and the lower flange 58f-3 are bent forward, and as shown in FIG. 13, the upper flange 58f-1 and the outer flange 58f-4 are rearward. Is bent. The upper flange 58f-1, the inner flange 58f-2, and the lower flange 58f-3 are joined to the upper wall, the side wall, and the lower wall of the upper member main body 9A by spot welding, and the outer flange 58f-4 is an upper member lid. The member 9B is joined by MIG welding. Specifically, a bonding hole 30 is formed at a position facing the outer flange 58f-4 of the upper member lid member 9B. After the opening of the upper member main body 9A is closed by the upper member lid member 9B, the upper member lid member The end face of the outer flange 58f-4 and the joining hole 30 are fixed by MIG welding from the outside of 9B.

  Further, the rear member 9A-2 of the upper member main body 9A is provided with inclined sides 31u and 31l which are inclined inward in the vehicle width direction from the front to the rear at the respective rear end portions of the upper wall and the lower wall. An inclined flange 32u protruding upward is extended from the inclined side 31u on the upper wall side of the rear side member 9A-2. An inclined flange 32l projecting downward is extended from the inclined side 31l on the lower wall side of the rear side member 9A-2.

  On the other hand, the upper member lid member 9B has a rear end that extends beyond the upper and lower inclined sides 31u, 31l of the upper member main body 9A to the rear side of the vehicle body and is coupled to the outer wall 75-a on the outer side in the vehicle width direction of the front pillar 75. An extension 9B-e is provided. Upper connecting pieces 33u connecting the upper and lower inclined flanges 32u, 32l of the upper member main body 9A and the front wall 75-b of the front pillar 75 to the upper side and the lower side of the rear end extension 9B-e of the upper member lid member 9B. And the lower connection piece 33l is attached. Each of the upper connecting piece 33u and the lower connecting piece 33l is formed in a substantially triangular shape when viewed from above. The rear end extension 9B-e of the upper member lid member 9B, the inclined flanges 32u and 32l, and the front pillar 75 It is fixed to the front wall 75-b by welding.

  As described above, in the vehicle body front portion structure according to this embodiment, the high-rigidity rear wall member 55 coupled to the rear edge portion of the damper base 11 is arranged vertically with the upper member 9 on the inner side in the vehicle width direction of the upper member 9. The vertical wall portion 55-a of the rear wall member 55 is connected to the inner flange 56 of the upper member 9 at a position that is arranged at a height that wraps at the height and that is aligned with the partition wall member 58 in the upper member 9 in the vehicle width direction. . Therefore, when a traveling load is input from the vertical wall portion 55-a of the rear wall member 55 to the inner flange 56 of the upper member 9, the traveling load is transmitted to the inner wall in the vehicle width direction of the upper member 9, and It is also transmitted to the other wall of the upper member 9 through the partition wall member 58 arranged in alignment with the vertical wall portion 55-a of the wall member 55 in the vehicle width direction. Therefore, when the vehicle body front structure according to this embodiment is employed, the traveling load input to the damper base 11 can be supported with high rigidity by effectively utilizing the cross section of the upper member 9.

  Further, in the vehicle body front structure according to this embodiment, the partition member 58 and the damper base 11 in the upper member 9 are coupled via the highly rigid hood damper bracket 51 and the hood hinge stiffener 50, so that the damper base The traveling load input to the upper member 9 can be efficiently transmitted to the entire cross section of the upper member 9, and the traveling load input to the damper base 11 can be supported by the upper member 9 with high rigidity.

  In the vehicle body front portion structure according to this embodiment, the hood hinge stiffener 50 attached to the upper member 9 is connected to the damper base 11 at the damper base connecting portion 50C-5 at the front edge portion, and at the rear edge portion. The windshield lower connecting portion 50C-4 and the connecting member connecting portion 50C-6 are connected to the edge of the windshield lower 13 and the connecting bracket 60. The connection bracket 60 is formed by a metal plate that protrudes from the inner side surface of the upper member 9 in the vehicle width direction and has a rigidity higher than that of the windshield lower 13. Therefore, when this structure is adopted, since it becomes difficult for a traveling load to be input from the hood hinge stiffener 50 to the thin-walled windshield lower 13 side, stress concentration at the joint around the windshield lower 13 is avoided, The support rigidity of the damper base 11 can be effectively increased by the hood hinge stiffener 50.

  Furthermore, in the vehicle body front structure according to this embodiment, the rear wall member 55 coupled to the rear edge portion of the damper base 11 is connected to the inner flange 56 of the upper member 9 at the vertical wall portion 55-a. The bottom wall portion is connected to the horizontal bending flange 57 of the side wall 2a of the engine room 2 that is located away from the upper member 9. For this reason, the fall and deformation of the rear wall member 55 can be more firmly regulated by the inner flange 56 and the horizontal bending flange 57. Therefore, when this structure is adopted, the damper base 11 can be supported with higher rigidity through the rear wall member 55.

  In the case of this embodiment, since the sound insulation member 59 for closing the cross section of the upper member 9 is attached to the partition member 58 disposed inside the upper member 9, noise passing through the cross section from the front side of the upper member 9 is provided. Can be blocked by the sound insulating member 59.

  Further, in the vehicle body front structure according to this embodiment, the upper flange 58f-1, the inner flange 58f-2, and the lower flange 58f-3 of the partition member 58 are formed by the upper wall, the side wall, and the lower wall of the upper member main body 9A. The outer flange 58f-4 of the partition wall member 58 is joined to the wall of the upper member lid member 9B through the joining hole 30. Therefore, the partition member can be fixed to the four walls of the upper member 9 to increase the cross-sectional rigidity of the upper member 9.

Further, in the vehicle body front structure according to this embodiment, the upper member lid member 9B that closes the outer side in the vehicle width direction of the upper member main body 9A has the outer wall 75- on the outer side in the vehicle width direction of the front pillar 75 at the rear end extension 9B-e. The inclined flanges 32u and 32l coupled to a and formed at the rear end portions of the upper wall and the lower wall of the upper member main body 9A are connected to the front wall 75- of the front pillar 75 via the upper connecting piece 33u and the lower connecting piece 33l. connected to b. For this reason, the rear portion of the upper member main body 9A can be joined to the front pillar 75 side with a sufficiently long joining distance via the inclined flanges 32u and 32l. Therefore, when this structure is adopted, the support rigidity of the upper member 9 can be increased, and the traveling load input to the damper base 11 can be supported on the skeleton of the vehicle body with high rigidity.
In this embodiment, the upper connecting piece 33u and the lower connecting piece 33l are configured as separate members from the upper member lid member 9B. However, the upper connecting piece 33u and the lower connecting piece 33l are integrated with the upper member lid member 9B. You may make it form.

Furthermore, in the vehicle body front portion structure according to this embodiment, the upper member main body 9A includes a front side member 9A-1 and a rear side member 9A-2, and the damper base 11 includes the rear wall member 55 and the inner flange 56. The partition member 58 is disposed inside the rear member 9A-2 of the upper member main body 9A, and the vertical wall 12Af of the dashboard upper 12 is connected to the rear wall. The member 55 is disposed to face the rear surface of the vertical wall portion 55-a. Therefore, the vertical wall 12Af of the dashboard upper 12 can be aligned with the partition wall member 58 in the vehicle width direction together with the vertical wall portion 55-a of the rear wall member 55, so that the vehicle body rigidity can be further increased.
Further, as shown in FIG. 10, when the rear center region of the damper is surrounded by the rigid rear wall member 55, the displacement in the rotational direction of the damper base 11 due to the input from the damper can be restricted. it can.

  Further, in the case of the vehicle body front structure according to this embodiment, the end of the dashboard upper 12 on the outer side in the vehicle width direction is connected to the left and right corresponding damper bases 11 via the rigid hood hinge stiffener 50. Therefore, it is possible to avoid the traveling load input to the damper base 11 from being directly transmitted to the thin dashboard upper 12. Therefore, when this configuration is adopted, it is possible to suppress the concentration of stress at the joint portion of the dashboard upper 12.

  In addition, this invention is not limited to said embodiment, A various design change is possible in the range which does not deviate from the summary.

2 ... Engine room (powered room)
2a ... side wall (side wall component)
DESCRIPTION OF SYMBOLS 9 ... Upper member 9A ... Upper member main body 9A-1 ... Front side member 9A-2 ... Rear side member 9B ... Upper member cover member 9B-e ... Rear end extension part 10 ... Damper housing 11 ... Damper base 12 ... Dashboard upper 12Af ... Longitudinal wall 30 ... holes for joining 31u, 31l ... inclined side 32u, 32l ... inclined flange 33u ... upper connecting piece 33l ... lower connecting piece 50 ... hood hinge stiffener (hood mounting member)
51 ... Hood damper bracket (hood mounting member)
55 ... Rear wall member 55-a ... Vertical wall portion 55-b ... Bottom wall portion 56 ... Inner flange 58 ... Partition member 58f-1 ... Upper flange 58f-2 ... Inner flange 58f-3 ... Lower flange 58f-4 ... Outer Flange 59 ... Sound insulation member 60 ... Connection bracket (connection member)
75 ... Front pillar

Claims (9)

An upper member extending from the front pillar to the front of the vehicle body;
A damper housing which is disposed on the inner side in the vehicle width direction of the upper member and constitutes a side wall of a power mounting chamber of the vehicle, and which houses a suspension damper;
A damper base attached to an upper portion of the damper housing and to which the damper is fixed;
A highly rigid rear wall member coupled to the rear edge of the damper base and covering the rear of the damper;
A partition member disposed inside the upper member to reinforce the cross section of the upper member,
The upper member has an inner flange extending inward in the vehicle width direction,
The rear wall member is disposed at an inner height in the vehicle width direction of the upper member so as to be overlapped with the upper member in the vertical direction, and the inner flange is positioned at a position aligned with the partition member in the upper member in the vehicle width direction. The vehicle body front part structure characterized by having the vertical wall part connected with this. A hood mounting member fixed to the upper member, to which a hood that can be opened and closed is mounted,
The vehicle body front part structure according to claim 1, wherein the partition member and the damper base in the upper member are coupled via the hood mounting member. A windshield lower supporting the lower end of the windshield glass on the rear upper end side of the power mounting chamber;
A projecting member projecting on a side surface in the vehicle width direction of the upper member, and having a rigidity higher than that of the windshield lower,
The hood attachment member includes a hood hinge stiffener attached to the upper member to reinforce a hood hinge attachment portion of the upper member,
The hood hinge stiffener includes a hood hinge connection portion to which the hood hinge is connected above the upper member, and a window connected to the outer edge in the vehicle width direction of the windshield lower in the vehicle width direction inner region of the rear edge portion. A shield lower connecting portion, a damper base connecting portion connected to the damper base at a front edge portion, and a connecting member connecting portion connected to the connecting member in a vehicle width direction outer region of a rear edge portion The vehicle body front part structure according to claim 2, wherein: The rear portion of the damper housing is provided with a side wall constituting portion constituting a side wall of the power mounting chamber at a position spaced inward in the vehicle width direction with respect to the upper member.
A horizontal bending flange that is bent in the upper member direction is formed at the upper part of the side wall constituting part,
The rear wall member has a bottom wall portion bent substantially horizontally at a lower end of the vertical wall portion,
The vehicle body front part structure according to any one of claims 1 to 3, wherein the bottom wall portion of the rear wall member is connected to the horizontal bending flange of the side wall constituting portion.   The vehicle body front part structure according to any one of claims 1 to 4, wherein a sound insulation member that closes a cross section of the upper member is attached to the partition member. The upper member includes an upper member body having a substantially U-shaped cross section that opens outward in the vehicle width direction, and an upper member lid member coupled to the upper member body so as to close the opening of the upper member body,
The upper member lid member has a bonding hole,
The partition member has an upper flange, an inner flange, and a lower flange that are joined to the upper wall, the side wall, and the lower wall of the upper member main body, and is joined to the joining hole of the upper member lid member. The vehicle body front part structure according to claim 1, further comprising an outer flange. The upper member includes an upper member body having a substantially U-shaped cross section that opens outward in the vehicle width direction, and an upper member lid member coupled to the upper member body so as to close the opening of the upper member body,
The upper member main body has, at each rear end of the upper wall and the lower wall, an inclined side that is inclined inward in the vehicle width direction from the front to the rear, and an inclined flange that is bent upward and downward from the inclined side. And
The upper member lid member has a rear end extension that extends to the vehicle body rear side beyond the inclined side of the upper member main body and is coupled to the outer wall in the vehicle width direction of the front pillar,
An upper connecting piece and a lower connecting piece for connecting the inclined flanges of the upper and lower walls of the upper member main body and the front wall of the front pillar are connected to the upper and lower sides of the rear end extension. The vehicle body front part structure according to any one of claims 1 to 6, wherein the vehicle body front part structure is provided. The upper member includes an upper member body having a substantially U-shaped cross section that opens outward in the vehicle width direction, and an upper member lid member coupled to the upper member body so as to close the opening of the upper member body,
The upper member main body has a front side member to which the damper base is coupled on the inner side in the vehicle width direction, and a rear side member joined to the rear portion of the front side member,
The inner flange extends to a rear end portion of the front side member,
The partition member is disposed inside the rear side member,
The vertical wall portion of the rear wall member is joined to the rear surface of the inner flange,
The vertical wall of the dashboard upper that separates the vehicle compartment and the power mounting chamber is disposed so as to face the rear surface of the vertical wall portion. Body front structure. A hood hinge stiffener attached to the upper member to reinforce a hood hinge attachment portion of the upper member;
The hood hinge stiffener has a damper base connecting portion connected to the damper base,
The vehicle body front part structure according to claim 8, wherein left and right ends of the dashboard upper in the vehicle width direction are connected to the left and right corresponding damper bases via the hood hinge stiffeners. .

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