JP5922471B2 - Auto body front structure - Google Patents

Description

  The present invention relates to a vehicle body front structure in which a suspension support module for supporting a suspension is disposed between a front end module having a bumper beam and a dash panel portion.

  Japanese Patent Application Laid-Open Publication No. 2004-228707 discloses a suspension support module for supporting left and right suspensions, an engine, an impact absorption module, and a bumper supported on a metal suspension support module fixed to the front surface of a dash panel portion of an automobile.

GB-A-2367270

  By the way, what was described in the above-mentioned patent document 1 is that the damper housing of the metal suspension support module is supported on the front surface of the dash panel portion via a support member in which a plurality of metal tubes are combined. There is a problem that not only the number of parts of the support module increases and the cost and assembly man-hour increase, but also the distance between the dash panel portion and the damper housing increases and the longitudinal dimension of the vehicle body increases.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a vehicle body front structure having a high strength against a frontal collision load while having a small number of parts and a small size.

In order to achieve the above object, according to the first aspect of the present invention, a suspension support module for supporting a suspension is disposed between a front end module having a bumper beam and a dash panel portion. a part structure, the suspension support module consists in integrating the damper housing and the front side frame rear light metal, a hollow tube of light metal between the front side frame rear portion of the front end and the front end module The front side frame front part is connected, and the front side frame rear part is composed of a front part, an intermediate part, and a rear part, and in plan view, the front part is juxtaposed in the vehicle width direction and converges toward the rear A plurality of first ribs, wherein the intermediate portion is the plurality of converged One second rib connected to the rear end of the first rib is provided, and the rear portion includes a plurality of third ribs that extend to the rear in connection with the rear end of the second rib. A vehicle body front structure is proposed.

According to a second aspect of the present invention, there is provided a vehicle body front structure in which a suspension support module for supporting a suspension is disposed between a front end module having a bumper beam and a dash panel portion, suspension support module consists in integrating the damper housing and the front side frame rear light metal, a front side frame front made of hollow tube of light metal between the front side frame rear portion of the front end and the front end module The automobile is connected, and a rear surface of the suspension support module abuts against a front surface of the dash panel portion, and is fastened to the dash panel portion with a bolt whose head abuts against the rear surface of the dash panel portion. A vehicle body front structure is proposed.

According to the invention described in claim 3 , in addition to the structure of claim 2, a wheel house rear wall is integrally formed on the dash panel portion, and the bolt is flat around the wheel house rear wall. A vehicle body front structure is proposed, which is screwed into the suspension support module in a state of penetrating a reinforcing member inserted in the portion.

According to a fourth aspect of the present invention, there is provided a vehicle body front structure in which a suspension support module for supporting a suspension is disposed between a front end module having a bumper beam and a dash panel portion, suspension support module consists in integrating the damper housing and the front side frame rear light metal, a front side frame front made of hollow tube of light metal between the front side frame rear portion of the front end and the front end module The rear part of the upper member is connected to the upper part of both ends in the vehicle width direction of the dash panel part, and the upper surface of the upper member and the upper surface of the damper housing are connected by a connecting member. A vehicle body front structure is proposed.

According to the fifth aspect of the present invention, there is provided a vehicle body front structure in which a suspension support module for supporting a suspension is disposed between a front end module having a bumper beam and a dash panel portion, suspension support module consists in integrating the damper housing and the front side frame rear light metal, a front side frame front made of hollow tube of light metal between the front side frame rear portion of the front end and the front end module The dash panel portion includes an inclined wall extending rearward and downward from a portion to which a rear end of the front side frame rear portion is fastened, and the thickness of the inclined wall is the thickness of the floor panel portion continuous to the rear thereof. The vehicle body front structure, which is characterized by It is.

According to the invention described in claim 6, in addition to the configuration of claim 5, wherein the vehicle width direction inner end of the inclined wall is connected to the floor tunnel formed in the floor panel part in the vehicle width direction A vehicle body front structure is proposed in which an outer end is connected to a side sill portion via a wheel house rear wall formed in the dash panel portion.

According to the invention described in claim 7 , in addition to the configuration of claim 5 or 6 , the inclined wall is configured by sandwiching a honeycomb core between an upper panel and a lower panel. A car body front structure is proposed.

According to have been present invention according to claim 8, in addition to the fourth aspect, the front end of the upper member is fitted to the rear end of the lower member extending rearward from the front end module, the upper member A vehicle body front structure is proposed in which a fitting portion of the lower member is fastened to the damper housing with a bolt penetrating a collar disposed therein.

The front floor panel 24 of the embodiment corresponds to the floor panel of the present invention, the first reinforcing member 37 and second reinforcing member 38 of the implementation of embodiment corresponds to the reinforcing member of the present invention.

According to the configuration of claim 1 , claim 2, claim 4, or claim 5 , the suspension support module disposed between the front end module having the bumper beam and the dash panel portion includes the damper housing and the front side frame. since the rear is consists integrally of a light metal, not only it is possible to suppress the number of parts to a minimum, by adjoining a damper housing to the dash panel can reduce the longitudinal dimension of the vehicle body, yet the front Since the front side frame front part consisting of a light metal hollow tube is connected to the front end of the side frame rear part, the suspension support module is downsized by the front side frame front part, and the mold for casting it is downsized to reduce costs. Can be achieved.

In particular, according to the configuration of the first aspect, when the front portion, the middle portion, and the rear portion of the rear portion of the front side frame are viewed in plan view, the front portions are juxtaposed in the vehicle width direction and converged toward the rear. The first rib is provided, the middle portion is provided with one second rib continuous to the rear ends of the plurality of converged first ribs, and the rear portion is extended rearward continuously to the rear end of the second rib. Since it has a plurality of third ribs, even if the rear part of the front side frame is curved in plan view in order to avoid interference with the front wheels, the front collision load input to the rear part of the front side frame is displayed in the dash panel. Can be reliably transmitted to the part and absorbed.

In particular, according to the second aspect of the present invention, the rear surface of the suspension support module comes into contact with the front surface of the dash panel portion and is fastened to the dash panel portion with a bolt whose head comes into contact with the rear surface of the dash panel portion. The module can be fixed to the rear of the dash panel portion with a bolt from the passenger compartment side, and the assemblability is improved.

In particular, according to the configuration of the fourth aspect, the rear portion of the upper member is connected to the upper portions of both ends in the vehicle width direction of the dash panel portion, and the upper surface of the upper member and the upper surface of the damper housing are connected by the connecting member. By configuring the upper member separately from the suspension support module, the upper member can be connected to the dash panel and the damper housing while reducing the cost of the mold for casting the suspension support module and reducing the cost. Can be secured.

In particular, according to the configuration of claim 5, the dash panel portion includes an inclined wall extending rearward and downward from a portion to which the rear end of the front side frame rear portion is fastened, and the thickness of the inclined wall is a floor panel continuous to the rear thereof. Since it is larger than the thickness of the portion, the collision load input to the inclined wall can be evenly distributed and effectively absorbed in the floor panel portion.

Further, according to the configuration of claim 3 , the strength of the dash panel portion is increased by integrally forming the wheel house rear wall on the dash panel portion, and the insert is inserted in the flat portion around the wheel house rear wall whose strength is increased. since bolts passing through the reinforcing member that is screwed to the suspension support module, it is possible to firmly fix the suspension support module to the dash panel.

According to the configuration of claim 6, the vehicle width direction inner end of the inclined wall is connected to the floor tunnel formed in a floor panel portion, the wheel house rear wall of the vehicle width direction outer end is formed on a dash panel portion because through and is connected to the door sill, it can be dispersed effectively absorbed the collision load inputted to the inclined wall to the floor tunnel and the side sill section.

According to the seventh aspect of the present invention, since the inclined wall is configured by sandwiching the honeycomb core between the upper panel and the lower panel, when the load of the frontal collision is transmitted to the inclined wall via the suspension support module, The load can be more evenly distributed to the floor panel portion.

According to the configuration of claim 8, is fitted to the rear end of the lower member to the front end of the upper member extending rearward from the front end module, the fitting portion of the upper member and lower member are a collar disposed therein The upper member and the lower member can be firmly fixed to the damper housing because they are fastened to the damper housing by the bolts that pass therethrough.

The perspective view of the vehicle body frame of a motor vehicle. FIG. 2 is a two-direction arrow view of FIG. 1. FIG. FIG. 4 is a sectional view taken along line 4-4 of FIG. FIG. 5 is a sectional view taken along line 5-5 of FIG. FIG. 6 is a sectional view taken along line 6-6 of FIG. FIG. 7 is a view in the direction of arrow 7 in FIG. 3. FIG. 8 is an exploded perspective view corresponding to FIG. 9-9 is a cross-sectional view taken along line 9-9 in FIG. FIG. 10 is a cross-sectional view taken along line 10-10 in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. Note that the front-rear direction, the left-right direction (vehicle width direction), and the up-down direction in this specification are based on the driver seated in the driver's seat.

  As shown in FIGS. 1 and 2, a vehicle body frame includes a cabin 11 made of carbon fiber reinforced resin (CFRP) and a pair of left and right suspension support modules 12 that are cast parts of an aluminum alloy connected to the front end of the cabin 11. , 12, a pair of left and right front side frame front parts 13, 13 obtained by cutting an extruded material of aluminum alloy into a predetermined length, a front end module 14 made of CFRP, and a pair of left and right lower members 15, 15 made of CFRP, A pair of left and right upper members 16, 16 made of CFRP are provided. A CFRP roll bar 17 reinforced by two stays is erected on the rear upper surface of the cabin 11.

  The cabin 11 has a hollow structure in which an upper panel 18 and a lower panel 19 are joined up and down by joining flanges 18a and 19a, and a front dash panel portion 20 and a pair of left and right side sills extending rearward from both ends of the dash panel portion 20 in the vehicle width direction. Portions 21, 21; a pair of left and right rear side frame portions 22, 22 extending rearward and upward from the rear ends of the side sill portions 21, 21, and a rear cross member that connects the rear ends of the rear side frame portions 22, 22 in the vehicle width direction. Part 23, front floor panel part 24 connecting the dash panel part 20 and the left and right side sill parts 21, 21, a kick-up part 25 rising from the rear end of the front floor panel part 24, and rearward from the upper end of the kick-up part 25 To the rear side frame parts 22 and 22 and the rear cross member part 23. And a rear floor panel portion 26.

  The front end module 14 includes a bumper beam 27 extending in the vehicle width direction and a pair of left and right bumper beam extensions that extend rearward from both ends of the bumper beam 27 in the vehicle width direction and are connected to the front ends of the front side frame front portions 13 and 13. 28 and 28 and a frame-shaped front bulkhead 29 supported between the bumper beam extensions 28 and 28. Each suspension support module 12 extends from the front side frame rear portion 30 connected to the rear end of the front side frame front portion 13 and the front surface of the dash panel portion 20 and from the front side frame rear portion 30 outward and upward in the vehicle width direction. And a damper housing 31 connected to the front surface of the dash panel 20. The lower members 15, 15 extend from both ends in the vehicle width direction of the bumper beam 27 to the outside in the vehicle width direction, bend rearward and upward from there, and are connected to the front ends of the upper members 16, 16. The dash panel portion 20 is connected to upper portions at both ends in the vehicle width direction.

  As is clear from FIG. 4, the bumper beam extension 28 extending rearward from the vehicle width direction end portion of the bumper beam 27 includes a large number of ribs 28 a. When the front collision load is input, the ribs 28a are crushed to absorb the collision energy. A rectangular first connection plate 32 made of CFRP is provided at the rear end of the bumper beam extension 28, and a metal second connection plate 33 welded to the front end of the front side frame 13 is provided as the bumper beam extension 28. The four stud bolts 34, which are superimposed on the first connection plate 32 and provided on the first connection plate 32, pass through the second connection plate 33 and are fastened to the nuts 35.

  Although the vertical and horizontal widths of the bumper beam extension 28 are larger than the vertical and horizontal widths of the front side frame front part 13, the bumper beam extension 28 and the front side frame front part 13 having different cross-sectional areas are separated from each other. By using the first connecting plate 32 and the second connecting plate 33 having a size larger than the area, the bumper beam extension 28 can be secured while sufficiently expanding the cross-sectional area of the bumper beam extension 28 to ensure shock absorption performance. Can be firmly fastened to the front side frame front portion 13.

  As apparent from FIG. 6, the front side frame rear portion 30 of the suspension support module 12, which is an aluminum alloy casting, includes a front portion F, an intermediate portion C, and a rear portion R. An upper wall 30a and a lower wall 30b continuous through the portion C and the rear portion R are provided. The front portion F includes first ribs 30c and 30c that are juxtaposed in the vehicle width direction, connect the upper wall 30a and the lower wall 30b, and consist of a pair of left and right vertical walls that converge toward the rear. The rear end of the front side frame front portion 13 is fitted into the rectangular opening. The front side frame front portion 13 is made of an extruded material of an aluminum alloy having a “day” -shaped cross section, and a rib 13a extending in the horizontal direction is provided therein.

  The intermediate portion C includes one second rib 30d that is continuous with the rear ends of the pair of left and right first ribs 30c, 30c that are converged, and the rear portion R is continuous with the rear end of the second rib 30d and faces rearward. And four third ribs 30e, 30e, 30f, and 30f that expand. Of these, the two third ribs 30e, 30e are juxtaposed in the vehicle width direction to connect the upper wall 30a and the lower wall 30b, and the other two third ribs 30f, 30f cross the X-shape to form the upper wall. 30a and the lower wall 30b are connected. A single fourth rib 30g is formed at the boundary between the intermediate portion C and the rear portion R so as to extend in the vertical and horizontal directions and connect the upper wall 30a and the lower wall 30b.

  Since the front side frame front portion 13 is made of an extruded material, not only can the manufacturing cost be reduced, but the front side frame front portion 13 is fitted to the front end of the front side frame rear portion 30, so that the front side frame front portion 13 is fitted. The front side frame rear portion 30 can be easily and firmly coupled, and the length of the front side frame can be easily adjusted by simply changing the cutting length of the front side frame front portion 13.

  In a plan view, the front side frame front portion 13 extends linearly in the front-rear direction, while the front side frame rear portion 30 has a vehicle width on the rear side to avoid interference with the front wheels 36 (see FIG. 2). Curved inward. However, the collision load input from the front side frame front part 13 converges the two first ribs 30c, 30c toward the rear of the front part F, the one second rib 30d of the intermediate part C, and the rear part. The front side frame rear portion 30 is efficiently transmitted to the dash panel portion 20 through the four third ribs 30e, 30e, 30f, and 30f that expand toward the rear of the side portion R, and the cabin 11 is dispersed. Can be prevented.

  As apparent from FIGS. 5 to 8, the suspension support module 12 is integrally provided with a wall-shaped damper housing 31 extending upward and outward in the vehicle width direction from the rear portion 30 of the front side frame. Fastened to the front surface of the dash panel portion 20 at four locations on the frame rear portion 30 and at three locations on the damper housing 31.

  That is, first and second reinforcing members 37 and 38 made of an extruded aluminum material are inserted in the dash panel portion 20 in advance. The first reinforcing member 37 is a rectangular flat member, and two bolt holes 37a and 37a and two female screw holes 37b and 37b are formed at the corners thereof. The second reinforcing member 38 is a triangular flat member, and three bolt holes 38a are formed at the corners thereof. On the other hand, at the rear end of the front side frame rear portion 30 of the suspension support module 12, two female screw holes 30h and 30h and two bolt holes 30i and 30i are formed, and the rear of the damper housing 31 of the suspension support module 12 is formed. Three female screw holes 31a ... are formed at the end.

Then, the two bolts 39, 39 that pass through the two bolt holes 37a, 37a of the first reinforcing member 37 from the rear to the front and the head abuts against the rear surface of the dash panel portion 20 are formed on the front side frame rear portion 30. The two female screw holes 30h and 30h are screwed together, the two bolt holes 30i and 30i of the front side frame rear portion 30 are passed through from the front to the rear, and the head is in contact with the rear surface of the dash panel portion 20 . two female screw hole 37b of the bolt 40, 40 first reinforcing member 37, screwed to 37b, 3 pieces of bolt holes 38a ... head dash panel through the front after the second reinforcing member 38 the bolts 41 ... three abutting the rear surface parts 20 by screwing the three female screw holes 31a ... of the damper housing 31, suspension support module 12 is fastened to the front of the dash panel 20 . It is also possible to insert the bolts 39, 39, 41... In the same direction (front to rear) as the bolts 40, 40.

  Of the total of seven bolts 39, 39, 40, 40, 41... That fasten the suspension support module 12 to the front surface of the dash panel portion 20, two bolts that fasten the vehicle width direction inner side portion of the front side frame rear portion 30. 40 and 40 are inserted rearward from the engine room side and screwed into the first reinforcing member 37. The reason is that the two bolts 40, 40 face the center of the engine room and can be easily operated from the engine room side. On the other hand, the remaining five bolts 39, 39, 41... Are difficult to secure a working space on the engine room side, but the five bolts 39, 39, 41. Since it is inserted forward from the side and screwed into the suspension support module 12, the assembly of the suspension support module 12 is improved.

  At this time, the flat portion of the dash panel portion 20 to which the suspension support module 12 is attached has a wheel house rear wall 20a made of a curved wall integrally formed in the vicinity thereof to enhance the strength. By inserting the first and second reinforcing members 37 and 38, the suspension support module 12 can be more firmly fixed.

  As apparent from FIGS. 7A, 9 and 10, the upper surface of the upper member 16 formed in a pipe shape with a rectangular cross section by CFRP, and the outer surface in the vehicle width direction of the upper portion of the damper housing 31 of the suspension support module 12 Are connected by a connecting member 42 made of CFRP. The connecting member 42 is bonded to the upper surface of the upper member 16 at a joining flange 42a extending in the front-rear direction on the outer side in the vehicle width direction, and at the two fastening portions 42b, 42b on the upper part thereof in the vehicle width direction of the damper housing 31. Fastened to the outer surface with bolts 43, 43.

  As described above, the rear portion of the upper member 16 is connected to the dash panel portion 20, and the upper surface of the upper member 16 and the upper surface of the damper housing 31 are connected by the connecting member 42, so that the upper member 16 is separated from the suspension support module 12. By constituting the body, the upper member 16 can be connected to the dash panel portion 20 and the damper housing 31 to ensure the required strength while downsizing the mold for casting the suspension support module 12 and reducing costs. it can.

  Further, the front end of the upper member 16 is sandwiched between the upper end of the lower member 15 having an L-shaped cross section and the outer surface of the damper housing 31 in the vehicle width direction, and the bolt 44 passing through the lower member 15 and the upper member 16 is provided in the damper housing. 31 is fastened to the outer surface in the vehicle width direction. At this time, by disposing the collar 45 through which the bolt 44 penetrates inside the upper member 16, the fastening force of the bolt 44 can be increased while preventing the CFRP upper member 16 from being crushed. Furthermore, by screwing a bolt 46 that penetrates the fastening flange 15a extending upward from the upper surface of the lower member 15 and the front end portion of the connecting member 42 from the outer side in the vehicle width direction to the outer surface in the vehicle width direction of the damper housing 31, The lower member 15 and the connecting member 42 are fastened to the damper housing 31 together.

  As is apparent from FIGS. 3 and 4, an inclined wall 20 b is formed in the lower portion of the dash panel portion 20 so as to be inclined rearward and downward toward the front floor panel portion 24. The inclined wall 20 b has a structure in which a honeycomb core 47 (see FIG. 4) is sandwiched between the upper panel 18 and the lower panel 19, and the thickness thereof is larger than the thickness of the front floor panel portion 24. The honeycomb core 47 may be corrugated. In addition, the outer side in the vehicle width direction of the inclined wall 20b is continuous with the curved wheel house rear wall 20a. 24a is continuously connected.

  Therefore, when the load of the frontal collision is input to the dash panel portion 20 from the rear portion 30 of the front side frame, the load is evenly distributed to the front floor panel portion 24 through the inclined wall 20b reinforced by the honeycomb core 47 and having high strength. And can be absorbed effectively. At this time, the load input to the inclined wall 20b of the dash panel portion 20 is transmitted to the side sill portion 21 via the wheel house rear wall 20a and also to the floor tunnel 24a of the front floor panel portion 24. Therefore, the collision load can be dispersed throughout the cabin 11 and absorbed more effectively.

  As described above, according to the present embodiment, the suspension support module 12 disposed between the front end module 14 and the dash panel portion 20 is integrated with the damper housing 31 and the front side frame rear portion 30 with a light metal. Since it is constructed by casting, not only the number of parts can be minimized, but also the damper housing 31 can be adjacent to the dash panel portion 20 and the longitudinal dimension of the vehicle body can be shortened. In addition, since the front side frame front portion 13 made of a light metal hollow tube is connected to the front end of the front side frame rear portion 30, the suspension support module 12 is reduced in size by the amount of the front side frame front portion 13, and a mold for casting it. The cost can be reduced by downsizing.

  The embodiments of the present invention have been described above, but various design changes can be made without departing from the scope of the present invention.

  For example, in the embodiment, among the seven bolts 39, 39, 40, 40, 41,... That fasten the suspension support module 12 to the dash panel 20, five bolts 39, 39, 41,. However, they may be inserted from the engine room side, and the number of bolts is arbitrary.

12 Suspension support module 13 Front side frame front part 14 Front end module 15 Lower member 16 Upper member 18 Upper panel 19 Lower panel 20 Dash panel part 20a Wheel house rear wall 20b Inclined wall 21 Side sill part 24 Front floor panel part (floor panel part)
24a floor tunnel 27 bumper beam 30 the front side frame rear portion 30c first rib 30d second rib 30e third rib 30f third rib 31 damper Pillow grayed 37 first reinforcing member (reinforcing member)
38 Second reinforcing member (reinforcing member)
39 Bolt 41 Bolt 42 Connecting member 44 Bolt 45 Collar 47 Honeycomb core F Front part C Middle part R Rear part

Claims (8)

A vehicle body front structure in which a suspension support module (12) for supporting a suspension is disposed between a front end module (14) having a bumper beam (27) and a dash panel portion (20),
The suspension support module (12) consists integrally with the damper housing (31) and the front side frame rear portion (30) in light metal, the front end of the front side frame rear portion (30) said front end module (14) A front side frame front part (13) made of a light metal hollow tube is connected between the front side frame rear part (30), the front part (F), the intermediate part (C) and the rear part (R). The front portion (F) includes a plurality of first ribs (30c) that are juxtaposed in the vehicle width direction and converge toward the rear in plan view, and the intermediate portion (C) includes the plurality of converged portions in the plan view. The second rib (30d) is connected to the rear end of the first rib (30c), and the rear portion (R) is connected to the rear end of the second rib (30d) to the rear. Body front structure for an automobile, characterized in that it comprises a plurality of third ribs selfish expanding (30e, 30f). A vehicle body front structure in which a suspension support module (12) for supporting a suspension is disposed between a front end module (14) having a bumper beam (27) and a dash panel portion (20),
The suspension support module (12) consists integrally with the damper housing (31) and the front side frame rear portion (30) in light metal, the front end of the front side frame rear portion (30) said front end module (14) A front side frame front portion (13) made of a light metal hollow tube is connected between the rear surface of the suspension support module (12) and a front surface of the dash panel portion (20). A vehicle body front part structure of an automobile characterized in that it is fastened to the dash panel part (20) with bolts (39, 41) whose head abuts against the rear surface of the part (20) . A wheel house rear wall (20a) is integrally formed on the dash panel portion (20), and the bolts (39, 41) are inserted into a flat portion around the wheel house rear wall (20a). 38) The vehicle body front part structure according to claim 2 , wherein the suspension support module (12) is screwed into the suspension support module (12) so as to penetrate the suspension support module (12). A vehicle body front structure in which a suspension support module (12) for supporting a suspension is disposed between a front end module (14) having a bumper beam (27) and a dash panel portion (20),
The suspension support module (12) consists integrally with the damper housing (31) and the front side frame rear portion (30) in light metal, the front end of the front side frame rear portion (30) said front end module (14) A front side frame front part (13) made of a light metal hollow tube is connected between the rear parts of the upper member (16) and both upper ends of the dash panel part (20) in the vehicle width direction. A vehicle body front structure , wherein an upper surface of the upper member (16) and an upper surface of the damper housing (31) are connected by a connecting member (42) . A vehicle body front structure in which a suspension support module (12) for supporting a suspension is disposed between a front end module (14) having a bumper beam (27) and a dash panel portion (20),
The suspension support module (12) consists integrally with the damper housing (31) and the front side frame rear portion (30) in light metal, the front end of the front side frame rear portion (30) said front end module (14) A front side frame front part (13) made of a light metal hollow tube is connected between the rear panel and the dash panel part (20) from the part where the rear end of the front side frame rear part (30) is fastened. A vehicle body front structure of an automobile comprising an inclined wall (20b) extending downward, wherein the thickness of the inclined wall (20b) is larger than the thickness of a floor panel portion (24) continuous behind the inclined wall (20b) . The vehicle width direction inner end of the inclined wall (20b) is connected to the floor tunnel (24a) formed in the floor panel portion (24), the vehicle width direction outer end is formed in the dash panel (20) The vehicle body front part structure according to claim 5 , characterized in that it is connected to the side sill part (21) via a wheel house rear wall (20a). The vehicle body of an automobile according to claim 5 or 6 , wherein the inclined wall (20b) is configured by sandwiching a honeycomb core (47) between an upper panel (18) and a lower panel (19). Front structure. The front end of the upper member (16) is fitted to the rear end of the lower member (15) extending rearward from said front end module (14), the fitting portion of the upper member (16) and said lower member (15) but characterized in that it is fastened to the damper housing (31) with a bolt (44) penetrating the collar (45) disposed therein, the vehicle body front structure of an automobile according to claim 4.

Images