JP6560518B2 - Auto body front structure - Google Patents

Description

  The present invention relates to a front body structure of an automobile, and more particularly to a front body of an automobile having a stiffening member extending in the vehicle width direction to connect a front side frame and a front side sill and forming a closed cross section with a floor panel. Regarding the part structure.

  A front side frame in which the bumper located at the forefront of the vehicle receives a collision object such as an oncoming vehicle and extends the energy of the collision input from the bumper in the longitudinal direction of the vehicle against a full wrap frontal collision or offset frontal collision. It absorbs by crushing and deforming and protects the passenger compartment.

  However, the collision energy absorption function due to the crushing deformation of the bumper and the front side frame is not sufficiently obtained for the front collision only on the outer end in the vehicle width direction of the automobile (hereinafter referred to as the small overlap front collision). Most of the load due to objects is input to the front wheels. In this case, the front wheel which moves backward collides with a stiffening member which extends in the vehicle width direction between the side sill and the front side frame and forms a closed section (so-called torque box) with the front portion of the floor panel.

  Conventionally, as a stiffening member forming a torque box, as shown in FIG. 7, the front end and the rear end are coupled to the vicinity of the bent portion 101aA and the vicinity of the rear end of the toe board 101a constituting the inclined surface of the floor panel 101, respectively. A stiffening member 102 that forms a closed section (torque box) with the floor panel 101 is known. The stiffening member 102 further includes a plate member 103 in which the front end 103a and the rear end 103b are respectively bridged on the front wall 102a and the rear wall 102c of the stiffening member 102 and stacked on the bottom wall 102b.

  According to this, when a front wheel that moves backward against the front wall 102a collides, rigidity is ensured by the laminated structure of the plate member 103 and the bottom wall 102b, and the deformation of the torque box is suppressed.

  Patent Document 1 discloses another aspect of a stiffening member that forms a torque box. Specifically, as shown in FIG. 8, the stiffening member 105 has a recess 105b in which a part of the front wall 105a bends backward in a bead shape, and the stiffening member 105 has an upper end 105c. By connecting the bottom portion of the toe board 106a, the bottom portion of the recess 105b to the upper portion 106aA of the toe board 106a, and the vicinity of the rear end of the toe board 106a having the inclined rear end 105d, two boxes of the closed cross section 108 and the closed cross section 109 are obtained. A closed cross-sectional structure is formed. According to this, when a front wheel collides with the front wall 105a, rigidity is ensured by the two closed cross-sectional structures, and the deformation of the torque box is suppressed.

JP 2002-154458 A

  However, in recent years, the development of automobiles equipped with large-diameter tires has progressed, the weight of the wheels has increased, and the influence on the passenger compartment of the enlarged front wheels when a small overlap collision has occurred has increased There is.

  That is, according to the stiffening member having a structure in which the plate member is laminated on the bottom wall, when a small overlap front collision occurs and the large-diameter front wheel moves backward in the direction of the arrow 500 shown in FIG. Even though the collapse of the torque box itself can be suppressed by the laminated structure of the plate material, the stiffening member itself rotates backward about the joint with the floor panel as shown by a two-dot chain line, and the rotation continues. There is a possibility that crushing deformation of the floor panel cannot be suppressed.

  Further, according to the stiffening member described in Patent Document 1, when a small overlap front collision occurs and the large-diameter front wheel retracts in the direction of arrow 600, the lower closed cross-section portion of the two closed cross-section portions The load concentrated on the front wall of the floor may not be distributed, and the lower closed cross-section portion may be crushed and deformed, and then the floor panel front portion may be crushed and deformed.

  The present invention has been made in view of the above problems, and an object thereof is to provide a vehicle body front structure that can effectively suppress deformation of a floor panel caused by a load input from a front wheel. is there.

In order to achieve the above object, the invention according to claim 1 comprises a horizontal plane portion that forms a floor portion of a passenger compartment and that extends upward as it moves forward from the front end of the horizontal plane portion. a floor panel having a surface portion, the side sill and front Symbol floor panel lower surface in the vehicle width direction inner side than the side sill front end extending in the longitudinal direction of the vehicle body in the vehicle width direction both side ends of the floor panel is opposed to the front wheel A front side frame extending in the longitudinal direction of the vehicle body along the vehicle body, and a recess extending in the vehicle width direction and having both end portions joined to at least the side surface of the front side frame in the vehicle width direction and the front end of the side sill. And a stiffening member that forms a closed cross-section structure portion together with the floor panel by coupling an upper edge of the concave portion to a front end and an inclined surface portion of a horizontal surface portion of the floor panel. That the vehicle body front structure of an automobile, the closed cross section portion, the front and with Keru set the extending plate member bridged been in the front-rear direction and the front end of the horizontal portion of the stiffening member, the front The side frame is parallel to the side sill without intersecting with the side sill in a vehicle longitudinal direction region in contact with the stiffening member .

  According to this configuration, the load input to the front part of the stiffening member from the front wheel retreating due to a front collision or the like is efficiently transmitted to the front end of the horizontal surface part behind the inclined surface part via the plate member. Distributed. Accordingly, load concentration on the front portion of the stiffening member is avoided, and deformation of the stiffening member and deformation of the inclined surface portion of the floor panel following deformation of the stiffening member are also avoided.

  According to a second aspect of the present invention, in the vehicle body front part structure according to the first aspect, the plate member is bridged substantially horizontally between a front end of the horizontal surface portion and a front portion of the stiffening member. It is characterized by that.

  According to this configuration, the plate member extends substantially horizontally, so that the plate material extends substantially horizontally in the front-rear direction from the front end of the plate member coupled to the front portion of the stiffening member to the horizontal plane portion. Become. Therefore, the load input from the front wheel to the front portion of the stiffening member can be efficiently transmitted and distributed in a straight line to the rear horizontal surface portion, and the crushing deformation of the stiffening member and the inclined surface portion can be further effectively suppressed. be able to.

According to a third aspect of the present invention, in the vehicle body front structure according to the first or second aspect, the front end of the horizontal surface portion, the upper edge of the concave portion, and the rear end of the inclined surface portion are overlapped, for a total of three. It is characterized by being connected by a single plate material .

  According to this configuration, since the front end of the horizontal surface portion over which the rear end of the plate member is bridged is joined to the upper edge of the recess and the rear end of the inclined surface portion, the stiffening member is The load input to the front portion can be input to the highly rigid laminated joint portion, and the load can be reliably transmitted and distributed to the rear of the horizontal surface portion while suppressing deformation of the floor panel at the joint portion. Therefore, the crushing deformation of the stiffening member and the inclined surface portion can be further effectively suppressed.

  According to a fourth aspect of the present invention, in the vehicle body front part structure according to any one of the first to third aspects, the plate member extends in the vehicle width direction to extend the front side frame and the side sill. It is spanned over the front of.

  According to this configuration, since the plate member extends in the vehicle width direction, not only can a larger input load be transmitted to the floor panel, but also it is bridged between the front side frame and the front part of the side sill. Therefore, it can be transmitted and distributed to the front side frame and the side sill. Therefore, the deformation deformation of the stiffening member and the floor panel can be further effectively suppressed.

  The invention according to claim 5 is the vehicle body front part structure according to any one of claims 1 to 4, wherein the plate member is forward and outward in the vehicle width direction from the rear edge side of the plate member. And a bead extending obliquely.

  According to this configuration, it is possible to increase the effective cross-sectional area of the plate member having a cross section substantially orthogonal to the input load direction of the front wheel that moves backward, and it is possible to suppress the buckling deformation of the plate member and thereby increase the input load. Can be transmitted and dispersed in the horizontal plane. Therefore, the deformation deformation of the stiffening member and the floor panel can be further effectively suppressed.

The invention according to claim 6 is a floor panel having a horizontal plane part that forms a floor part of the passenger compartment, and a slope part that rises upward as it moves forward from the front end of the horizontal plane part. A side sill that extends in the vehicle longitudinal direction at both ends in the vehicle width direction of the floor panel and has a front end facing the front wheel, and extends in the vehicle longitudinal direction along the lower surface of the floor panel on the inner side in the vehicle width direction than the side sill. A front side frame that is present, and a recess that extends in the vehicle width direction and has both ends connected to the front side frame and the front end of the side sill, and the upper edge of the recess is a horizontal plane portion of the floor panel. A vehicle body front structure including a stiffening member that forms a closed cross-section structure portion together with the floor panel by being coupled to a front end and an inclined surface portion, respectively, in the closed cross-section structure portion Front and with Keru set the extending plate member bridged been in the front-rear direction and the front end of the horizontal portion of the stiffening member, the vehicle width along the horizontal surface at a position behind the closed cross section A cross member extending in a direction to connect the front side frame and the side sill; and the stiffening member extends further rearward from an upper edge of the recess coupled to a front end of the horizontal surface portion. It is combined with the cross member .

According to this configuration, the load input to the front part of the stiffening member from the front wheel retreating due to a front collision or the like is efficiently transmitted to the front end of the horizontal surface part behind the inclined surface part via the plate member. Distributed. Accordingly, load concentration on the front portion of the stiffening member is avoided, and deformation of the stiffening member and deformation of the inclined surface portion of the floor panel following deformation of the stiffening member are also avoided. In addition , the load transmitted from the front part of the stiffening member to the front end of the horizontal surface part can be distributed to the two members of the horizontal surface part and the stiffening member and further transmitted to the rear, and the cross member can be used in the vehicle width direction. Can be dispersed. Therefore, the deformation deformation of the stiffening member and the floor panel can be further effectively suppressed.

  According to the present invention, the load input to the front portion of the stiffening member from the front wheel that is retracted due to a front collision or the like is transmitted and distributed to the front end of the horizontal surface portion behind the inclined surface portion via the plate member. . Accordingly, load concentration on the front portion of the stiffening member is avoided, and deformation of the stiffening member and deformation of the inclined surface portion of the floor panel following deformation of the stiffening member are also avoided.

It is a principal part bottom view of the vehicle body front part structure 10 concerning the embodiment of the present invention. It is the C section enlarged view of FIG. 1 which abbreviate | omitted description of the stiffening member 70. FIG. (A) It is the III-III sectional view taken on the line of FIG. 1, (b) It is the A section enlarged view of Fig.3 (a). (B) It is the IV-IV sectional view taken on the line of FIG. 1, and (b) The B section enlarged view of Fig.4 (a). It is a principal part bottom view which shows the load which acts on the vehicle body front part structure 10 of a motor vehicle at the time of a small overlap front collision. It is sectional drawing corresponding to Fig.3 (a) which shows the load which acts on the vehicle body front part structure 10 at the time of a small overlap front collision. It is a longitudinal cross-sectional view of the vehicle body front part of the motor vehicle which shows an example of the closed cross-section part (torque box) by the conventional stiffening member and a floor panel front part. It is a longitudinal cross-sectional view of the vehicle body front part of the motor vehicle which shows the other example of the conventional torque box.

  Next, a vehicle body front structure 10 according to an embodiment of the present invention will be described in detail with reference to FIGS. FIG. 1 is a bottom view of a main part of a vehicle body front structure 10 according to the present embodiment, FIG. 2 is an enlarged view of a portion C of FIG. 1 in which the stiffening member 70 is omitted, and FIG. A sectional view taken along line III and FIG. 4 are sectional views taken along line IV-IV in FIG. In each figure, the arrow Fr indicates the front of the vehicle body, the arrow OUT indicates the outside in the vehicle width direction, and the arrow Up indicates the upper side of the vehicle body.

  As shown in FIG. 1, a floor panel 12 extends in the front-rear direction and the width direction of the vehicle body on the bottom surface of the automobile to form a floor portion of the passenger compartment 2 (see FIG. 3A). Side sills 18 extend in the vehicle longitudinal direction on both sides in the vehicle width direction of the floor panel 12, and the front end 18 a of the side sill 18 faces the front wheel 3.

  From the vicinity of the front end 18a of the side sill 18, a front pillar (not shown) extends upward from the vehicle body.

  A front side frame 25 having a hat-shaped cross section that extends in the vehicle longitudinal direction along the lower surface of the floor panel 12 is provided on the inner side in the vehicle width direction than the side sill 18. Further, a floor tunnel portion 16 formed by projecting the floor panel 12 to the vehicle compartment 2 side extends in the vehicle front-rear direction further inwardly in the vehicle width direction of the front side frame 25, that is, at a substantially central position in the vehicle width direction. ing.

  As shown in FIG. 3 (a), the floor panel 12 has a horizontal surface portion 13 extending substantially horizontally in the longitudinal direction of the vehicle body, and a rear end 14b coupled to the front end 13a of the horizontal surface portion 13 so as to move forward. And an inclined surface portion 14 (toe board) that rises upward as it moves.

  The inclined surface portion 14 rises further upward via the bent portion 14a and serves as a wheel house that houses the front wheel 3 forward.

  As shown in FIGS. 3A and 1, the inclined surface portion 14 is stiffened by a cross member toe board side 30 attached at a position higher than the bent portion 14 a (see FIGS. 1 and 3A). ). That is, the cross member toe board side 30 is formed with two closed cross sections 34 and 35 by joining the upper flange 31, the lower flange 32, and the concave portion 33 provided in the intermediate portion to the inclined surface portion 14, thereby forming the inclined surface portion. 14 is stiffened. As shown in FIG. 1, the cross member toe board side 30 has both ends in the vehicle width direction joined to the side surface of the front side frame 25 and the front end 18 a of the side sill 18.

  In addition, as shown in FIG. 1, both ends in the vehicle width direction are disposed on the inner surfaces of the pair of left and right front side frames 25, 25 on the inner side in the vehicle width direction at substantially the same height as the cross member toe board side 30. The joined cross member toe board 40 is attached to the inclined surface part 14 of the floor panel 12 and stiffens the inclined surface part 14 in the same manner as the cross member toe board side 30.

  As shown in FIG. 3 (a), the front flange 13 and the rear flange 42 are joined to the upper surface of the horizontal plane portion 13 at a position behind the junction between the front end 13 a of the horizontal plane portion 13 and the rear end 14 b of the inclined plane portion 14. A cross member 40 extending in the vehicle width direction along the upper surface of the horizontal plane portion 13 and connecting the front side frame 25 and the side sill 18 is provided. Note that one end of the cross member 40 is joined to the inner surface of the side sill 18 and the other end is joined to the side wall 16 a of the floor tunnel portion 16. Further, as shown in FIG. 3A, the cross member 40 is formed with a bead 43 a having an upper surface 43 depressed downward along the extending direction of the cross member 40.

  Next, the stiffening member 70 that forms the closed cross-section structure portion 17 (torque box) together with the floor panel 12 and the plate member 60 provided in the closed cross-section structure portion 17 that is the characteristic configuration of the present invention will be described.

  As shown in FIG. 2, the plate member 60 has a main body 61 that is partitioned by an inner edge 61a, a rear edge 61b, an outer edge 61c, and a front edge 61d in an attached state to the floor panel 12. In the main body 61, bead portions 61e, 61f, 61g extending obliquely from the rear edge portion 61b side to the front edge portion 61d and the vehicle width direction outer side are arranged in the vehicle width direction. A flange 62 extending further inward in the vehicle width direction is provided on the inner edge portion 61a, and tongue pieces 63a, 63b, 63c extending further rearward are spaced apart in the vehicle width direction on the rear edge portion 61b. Is provided.

  The outer edge portion 61c is provided with a flange 64 that is bent and extended below the vehicle body, and the front edge portion 61d is provided with a flange 65 that is bent and extended above the vehicle body.

  As shown in FIG. 3A, the stiffening member 70 includes a front wall 71 extending upward substantially vertically and a bottom surface extending substantially horizontally by bending backward from a lower end 71a of the front wall 71. The wall 72 has a concave portion 74 that is bent from the rear end 72a of the bottom wall 72 and is substantially U-shaped in cross section formed by a rear wall 73 that extends rearward and obliquely upward and opens upward. . The stiffening member 70 has a rearward extending portion 75 that is bent from the upper end 73a of the rear wall 73 and extends substantially horizontally rearward.

  Next, attachment of the plate member 60 and the stiffening member 70 to the floor panel 12 will be described. As shown in FIG. 2, the plate member 60 is joined by spot welding or the like with the flange 62 overlapped with the flange 26 of the front side frame 25, and the flange 64 is joined with the inner wall of the side sill 18. Accordingly, the plate member 60 extends in the vehicle width direction and spans the front side frame 25 and the front portion of the side sill 18.

  Further, as shown in FIGS. 3A and 3B, the tongue piece 63b is further overlapped on a portion where the front end 13a of the horizontal surface portion 13 of the floor panel 12 and the rear end 14b of the inclined surface portion 14 (toe board) overlap. Arranged together. The same applies to the tongue piece 63a and the tongue piece 63c. A stiffening member 70 is attached to the floor panel 12 from below the plate member 60.

  As shown in FIG. 3A, the stiffening member 70 has the upper end 71 b of the front wall 71 serving as the front edge of the recess 74 overlapped with the laminated portion of the inclined surface portion 14 and the lower flange 32 of the cross member toe board side 30. Then, it is joined to the inclined surface 14 by spot welding or the like.

  Further, as shown in FIGS. 4A and 4B, the front end 75a of the rearward extending portion 75 serving as the rear edge of the concave portion 74 is used as a joint portion between the rear end 14a of the inclined surface portion 14 and the front end 13a of the horizontal surface portion 13. Superposed and joined to the floor panel 12 by spot welding or the like with a total of three plates.

  Further, as shown in the figure, the rear end 75b of the rearward extending portion 75 is overlapped with the front flange 41 of the cross member 40 and the joint portion of the horizontal plane portion 13, and the cross member is formed by spot welding or the like with a total of three plate members. 40.

  As shown in FIG. 1, the concave portion 74 of the stiffening member 70 has a flange 76 that extends in the vehicle width direction and is provided at an inner side end in the vehicle width direction. And a flange 77 provided at the outer end in the vehicle width direction is joined to the lower flange 18 c of the side sill 18.

  Next, the joining of the stiffening member 70 and the plate member 60 will be described. Although the order of description will be changed, the stiffening member 70 and the plate member 60 are joined in advance before being attached to the floor panel 12. Specifically, as shown in FIGS. 3A and 3B, the tongue piece 63b of the plate member 60 is overlapped with the front end 75a of the rearward extending portion 75, and a total of two plate materials are used by spot welding or the like. Be joined. The tongue pieces 63a and 63c are similarly joined to the front end 75a of the rearward extension 75. Further, the flange 65 of the plate member 60 is overlapped and joined to the front wall 71 of the stiffening member 70.

  The effect when the small overlap front collision occurs in the automobile having the vehicle body front structure 10 having the above configuration will be described with reference to FIGS. 5 and 6. FIG. 5 is a bottom view of the main part showing the load acting on the vehicle body front structure 10 of the automobile during the small overlap front collision, and FIG. 6 shows the load acting on the vehicle body front structure 10 of the automobile during the small overlap front collision. It is sectional drawing shown (corresponding to the III-III sectional view taken on the line of FIG. 1).

  As shown in FIG. 5, when a small overlap front collision occurs, the impact energy absorbing function due to the crushing deformation of the bumper and the front side frame 25 is not sufficiently obtained, and most of the load caused by the collision object is the front wheel 3. Is input. The front wheel 3 shows a behavior of rotating along the axis of operation while moving backward, and enters the vehicle width direction inward (in the direction of arrow 100) where the passenger compartment 2 is located to enter the front end 18a of the side sill 18 and the stiffening member. It collides with the front wall 71 of 70 (refer FIG.5 and FIG.6).

  As shown in FIG. 6, the front end 13 a of the horizontal surface portion 13 of the floor panel 12 that extends substantially horizontally in the longitudinal direction of the vehicle body and the front wall of the stiffening member 70 are disposed inside the closed section structure portion 17 of the stiffening member 70. Since the plate member 60 in which the rear end (tongue pieces 63a, 63b, 63c) and the front end (flange 65) are respectively extended over 71 extends substantially horizontally, it is coupled to the front portion of the stiffening member 70. Two plate members (the plate member 60 and the horizontal surface portion 13 of the floor panel 12) from the front end (flange 65) of the plate member 60 to the horizontal surface portion 13 extend substantially horizontally in the front-rear direction. Therefore, the load input from the front wheel 3 to the front wall 71 of the stiffening member 70 can be effectively transmitted and distributed in a straight line to the rear horizontal surface portion 13, and the crushing deformation of the stiffening member 70 and the inclined surface portion 14 can be prevented. It can be effectively suppressed.

  Further, since the joint portion between the inclined surface portion 14 of the floor panel 12 and the horizontal surface portion 13 is a bent portion, it is a portion where stress concentration easily occurs. The front end 13a of the horizontal surface portion 13 over which the rear ends (tongue pieces 63a, 63b, 63c) of the member 60 are bridged is the upper edge of the recess 74 (the front end 75a of the rearward extending portion 75) and the rear end 14a of the inclined surface portion 14. Therefore, the load input from the front wheel 3 to the front wall 71 of the stiffening member 70 can be input to the highly rigid laminated joint, and the floor panel can be deformed at the joint. It is possible to reliably transmit and disperse the load behind the horizontal plane portion while suppressing the load.

  Furthermore, since the plate member 60 extends in the vehicle width direction and is spanned between the front side frame 25 and the front portion of the side sill 18, the plate member 60 extends in the vehicle width direction, thereby increasing the load. Can be transmitted to and distributed to the horizontal plane portion 13 as well as to the side frame 25 and the front portion of the side sill 18.

  In addition, the plate member 60 has bead portions 61e, 61f, 61g that extend obliquely forward and rearward in the vehicle width direction from the rear edge portion 61b, so that the input direction of the front wheel 3 that moves backward (in the direction of arrow 100 in FIG. 5). ) In the cross-section substantially orthogonal to the plate member 60 can be made larger than that without the bead portion, and buckling deformation of the plate member 60 is suppressed and a larger load is applied to the horizontal plane portion 13. Can be transmitted and distributed.

  Further, since the rear end 75 b of the rearward extending portion 75 of the stiffening member 70 is joined to the front flange 41 of the cross member 40, it is transmitted from the front wall 71 of the stiffening member 70 to the front end 13 a of the horizontal surface portion 13. The distributed load is distributed to the two members of the horizontal plane portion 13 and the rear extending portion 75 and can be transmitted rearward, and is also distributed and transmitted by the cross member 40 in the vehicle width direction, that is, to the front side frame 25 and the side sill 18. be able to. Therefore, the deformation deformation of the stiffening member 70 and the floor panel 12 can be further effectively suppressed.

  In addition, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the meaning of invention. For example, in the present embodiment, the plate member 60 is bridged substantially horizontally between the front end 13a of the horizontal surface portion 13 of the floor panel 12 and the front wall 71 of the stiffening member 70. It is not essential to be able to.

  For example, if the front end of the plate member is joined to the front wall 71 and the rear end of the plate member is bridged over the front end 13a of the horizontal surface portion 13, the load input from the front wheel 3 to the front wall 71 is applied to the plate member. Can be transmitted / dispersed to the front end 13a of the horizontal surface portion 13 behind the inclined surface portion 14, can be transmitted / distributed to the horizontal surface portion 13 of the floor panel 12, and the stiffening member 70 can be connected to the front wall 71. Load concentration is avoided, and deformation of the stiffening member 70 and deformation of the inclined surface portion 14 of the floor panel 12 following deformation of the stiffening member 70 are also avoided.

  Further, in the present embodiment, the stiffening member 70 has the rearward extending portion 75, but instead of the rearward extending portion 75, the plate member 60 is extended to the position of the front flange 41 of the cross member 40. It is good also as what joins with the front flange 41.

  Further, from the present embodiment, a configuration without the cross member 40 is also possible.

2 Car compartment 3 Front wheel 10 Auto body front structure 12 Floor panel (floor)
13 Horizontal surface portion 14 Inclined surface portion 17 Closed cross-section structure portion 18 Side sill 25 Front side frame 40 Cross member 60 Plate members 61e, 61f, 61g Bead portion (bead)
70 Stiffening member 74 Recess 71b Upper end (Upper edge (front edge) of recess 74)
75a front end (upper edge (rear edge) of recess 74)
S Spot weld

Claims (6)

A floor panel having a horizontal plane portion that forms a floor portion of the passenger compartment, and an inclined surface portion that rises upward as it moves forward from the front end of the horizontal plane portion;
A side sill extending in the longitudinal direction of the vehicle body at both ends in the vehicle width direction of the floor panel and having a front end facing the front wheel;
A front side frame extending in the longitudinal direction of the vehicle body along the lower surface prior Symbol floor panel in the vehicle width direction inner side than the side sill,
Extending in the vehicle width direction, both ends have a recess joined to at least the side surface of the front side frame in the vehicle width direction and the front end of the side sill, and the upper edge of the recess is a horizontal surface portion of the floor panel Vehicle body front part structure comprising a stiffening member that forms a closed cross-section structure part together with the floor panel by being respectively coupled to the front end and the inclined surface part of
The closed cross section portion, the front and with Keru set the extending plate member bridged been in the front-rear direction and the front end of the horizontal portion of the stiffening member,
The vehicle body front structure according to claim 1, wherein the front side frame is parallel to the side sill without intersecting the side sill in a vehicle longitudinal direction region in contact with the stiffening member .   The vehicle body front part structure according to claim 1, wherein the plate member is bridged substantially horizontally between a front end of the horizontal plane part and a front part of the stiffening member.   The front body of the automobile according to claim 1 or 2, wherein the front end of the horizontal plane portion, the upper edge of the concave portion, and the rear end of the inclined surface portion are overlapped and joined by a total of three plate members. Part structure.   The vehicle body according to any one of claims 1 to 3, wherein the plate member extends in the vehicle width direction and spans between the front side frame and a front portion of the side sill. Front structure.   5. The vehicle body according to claim 1, wherein the plate member has a bead that extends obliquely forward and outward in the vehicle width direction from a rear edge side of the plate member. Front structure. A cross member that extends in the vehicle width direction along the horizontal plane portion at a position rearward of the closed cross-section structure portion and connects the front side frame and the side sill;
The said stiffening member is extended further back from the upper edge of the said recessed part couple | bonded with the front end of the said horizontal surface part, and is couple | bonded with the said cross member. Vehicle body front structure as described.

Images