JP4853180B2 - Body structure - Google Patents

Description

  The present invention relates to a vehicle body structure for dispersing a load input to a vehicle body panel.

There is known a front body structure in which a rear end portion of the front side member that is brought into contact with the front surface of the dash panel is fixed to the front surface of the dash panel by arc welding or the like (see, for example, Patent Document 1).
JP 2003-285766 A

  However, in the conventional technology as described above, reinforcement provided to suppress deformation of the dash panel due to a load input via the front side member at the time of a frontal collision of the vehicle causes an increase in the mass of the vehicle body.

  In view of the above facts, an object of the present invention is to obtain a vehicle body structure capable of suppressing deformation of a vehicle body panel without depending on reinforcement.

In order to achieve the above object, the vehicle body structure according to the first aspect of the present invention has a first high-rigidity portion and a second high-rigidity portion, which are made more rigid than the other portions , separated from each other in the vehicle width direction. A vehicle body panel, a fixed portion fixed to the vehicle body panel , a load input portion including a panel facing portion facing a portion between the first high rigidity portion and the second high rigidity portion of the vehicle body panel, and A load distribution member having a load transmission portion provided so as to be able to transmit a load from the load input portion to each of the first high rigidity portion and the second high rigidity portion of the vehicle body panel, It has a panel skeleton from the first high-rigidity part to the second high-rigidity part, and the load transmission part of the load distribution member is located on the panel skeleton side from the part including the panel facing part in the load input part. part in the vertical direction of the vehicle towards In conjunction with the projecting, wherein the load input portion in contact with the installation portion of the panel framework end face opposite to the first high-rigidity area and the vehicle vertical direction of the second high-rigidity area of the vehicle body panel Yes.

  In the vehicle body structure according to the first aspect, the load input portion of the load distribution member fixed to the vehicle body panel at the fixing portion faces the portion of the vehicle body panel including the portion between the first and second high-rigidity portions. Since the load transmitting portion provided in the load input portion is configured to be able to transmit the load from the load input portion to the first and second high-rigidity portions, the load directed to the vehicle body panel side input to the load input portion. Is transmitted to the first and second high-rigidity portions of the vehicle body panel via the load transmission portion. As a result, the bending load acting on the vehicle body panel is relieved compared to a configuration in which a load is mainly input to the portion between the first and second high-rigidity portions of the vehicle body panel, and the vehicle body panel does not rely on reinforcement. Deformation is suppressed.

  Thus, in the vehicle body structure according to the first aspect, deformation of the vehicle body panel can be suppressed without relying on reinforcement.

In the vehicle body structure according to claim 1, a portion between the first high-rigidity portion and the second high-rigidity portion of the vehicle body panel is reinforced (stiffened) by the panel skeleton, and the required rigidity of the vehicle body panel is obtained. , Strength is ensured. Since the load transmission portion of the load distribution member is in contact with the installation portion of the panel skeleton in the first high-rigidity portion and the second high-rigidity portion of the vehicle body panel, that is, the portion having higher rigidity so as to be able to transmit the load, Deformation can be effectively suppressed.

The vehicle body structure according to a second aspect of the present invention is the vehicle body structure according to the first aspect, wherein the panel skeleton is provided along the thickness direction of the vehicle body panel and a plurality of vertical walls facing each other are provided on the vehicle body panel. It has a closed cross-section structure connected by a pair of parallel walls along the main surface direction, and a plurality of load transmitting portions of the load distribution member are provided apart from each other in the opposing direction of the plurality of vertical walls. Each end face of the body panel opposite to the load input part is in contact with an installation site of the vertical wall in the first high rigidity part and the second high rigidity part of the vehicle body panel.

In the vehicle body structure according to claim 2, since the load transmitting portion of the load distribution member is in contact with the installation portion of the vertical wall extending in the thickness direction of the vehicle body panel in the panel skeleton, the deformation of the vehicle body panel is more effectively performed. Can be suppressed.

A vehicle body structure according to a third aspect of the present invention is the vehicle body structure according to the first or second aspect , wherein the first high-rigidity portion is provided with a protruding wall portion protruding in the thickness direction of the vehicle body panel. The fixing portion of the load distribution member includes an overhang fixing portion that is continuous from the load input portion and is fixed to the overhang wall portion.

In the vehicle body structure according to claim 3 , for example, a protruding wall portion is formed by bending or bending a part of the vehicle body panel, and the protruding wall portion is provided on a fixed portion of the load distribution member. The fixed part is fixed. For this reason, a part of the load directed from the load input portion toward the vehicle body panel acts as a shear load of the fixed portion between the overhang fixing portion and the overhang wall portion (supported), and the bending load acting on the vehicle body panel is reduced. It is further relaxed. Thereby, a deformation | transformation of a vehicle body panel can be suppressed effectively.

According to a fourth aspect of the present invention, there is provided the vehicle body structure according to the third aspect , wherein the overhanging wall portion and the overhanging fixing portion include a penetrating member penetrating the overhanging wall portion and the overhanging fixing portion. It is fixed by the fastening means including.

In the vehicle body structure according to the fourth aspect , since the overhang fixing portion and the overhang wall portion are fixed by the fastening means, a part of the load from the load input portion toward the vehicle body panel side is part of the overhang fixing portion and the overhanging portion. It is reliably supported as the shear load of the penetrating member that penetrates the exit wall.

The vehicle body structure according to a fifth aspect of the present invention is the vehicle body structure according to any one of the first to fourth aspects, wherein the vehicle body panel is configured such that the first high-rigidity portion has a front at the outer end in the vehicle width direction. The dash panel is a connecting portion with a pillar, and the second high-rigidity portion is a front opening end portion in the vehicle longitudinal direction of a floor tunnel portion disposed at the center in the vehicle width direction. A rear end portion of the vehicle body skeleton in the vehicle longitudinal direction extending in the vehicle longitudinal direction on the front side in the vehicle longitudinal direction with respect to the dash panel is fixed to the load input portion.

In the vehicle body structure according to claim 5 , the vehicle body vertical direction rearward load input to the front end of the vehicle body skeleton is mainly applied to the dash panel via the load input portion and the load transmission portion (and the fixed portion) of the load weapon material. It is transmitted and distributed to the connecting portion (first high-rigidity portion) with the pillar and the peripheral portion (second high-rigidity portion) of the front opening end of the floor tunnel in the vehicle longitudinal direction. Thereby, the deformation | transformation of the dash panel by the backward load from a vehicle body frame is suppressed effectively.

  As described above, the vehicle body structure according to the present invention has an excellent effect that the deformation of the vehicle body panel can be suppressed without depending on reinforcement.

  A vehicle body front structure 10 to which a vehicle body structure according to an embodiment of the present invention is applied will be described with reference to FIGS. 1 to 7. First, the overall structure of the vehicle body front part structure 10 will be described, and then the connecting structure between the front side member 12 and the dash panel 18 which is the main part of the present invention will be described in detail. In the figure, the arrow FR indicates the front direction of the vehicle body, the arrow UP indicates the upward direction of the vehicle body, the arrow IN indicates the vehicle width direction inside, and the arrow OUT indicates the vehicle width direction outside.

(Overall structure of the front body structure)
FIG. 6 is a perspective view showing a schematic overall configuration of the vehicle body front portion structure 10. As shown in this figure, the vehicle body front structure 10 includes a pair of left and right front side members 12 that are each elongated in the longitudinal direction of the vehicle body and arranged in parallel in the vehicle width direction. Each front side member 12 as a vehicle body skeleton in the present invention is bridged by a bumper reinforcement (not shown) that constitutes a front bumper between front ends (not shown). On the other hand, as shown in FIG. 5, a front side member rear 14 formed in a trapezoidal shape that is wider in the vehicle width direction as seen in a plan view is connected to the rear end portion of each front side member 12. Has been. The front side member rear 14 is configured to be compressively deformed (plastically deformed) by a load greater than or equal to a predetermined value acting in the longitudinal direction of the front side member 12.

  The front side member rear 14, that is, the rear end of the front side member 12 in the longitudinal direction of the vehicle body is coupled to a dash panel 18 as a vehicle body panel via a front side member bracket 16 described in detail later. The pair of left and right front side members 12, the front side member rear 14, and the front side member bracket 16 are each made of a metal material such as an aluminum alloy, and the main part of the dash panel 18 is made of carbon fiber reinforced plastic (CFRP). Configured.

  As shown in the front view of FIG. 4, the dash panel 18 is formed in a substantially rectangular plate shape in a front view mainly extending in the vehicle width direction and the vehicle body vertical direction. As shown in FIGS. 5 and 6, the front end of the floor panel 20 is connected to the lower end of the dash panel 18. A notch portion 18A is formed at the center of the dash panel 18 in the vehicle width direction. The notch portion 18A is cut out along a substantially U-shaped (stepped U-shape) edge that opens downward. Constitutes a forward opening end in the vehicle longitudinal direction of a floor tunnel 22 formed by opening downward in the vehicle vertical direction at the center in the vehicle width direction of the floor panel 20.

  Further, from the outer end of the dash panel 18 in the vehicle width direction, a pillar portion 24 extends from the rear side in the vehicle longitudinal direction. In this embodiment, the pillar portion 24 is formed so that the outer wall portion 24A as the overhanging wall portion forms an obtuse angle with respect to the main surface S facing the front side of the dash panel 18 in the vehicle body front-rear direction. The vehicle body is inclined with respect to the vehicle longitudinal direction and the vehicle width direction so as to face both the front side and the vehicle width direction outer side. A columnar member 26 is fixed to the rear surface of the left and right pillar portions 24 in the longitudinal direction of the vehicle body. The pillar portion 24 and the columnar member 26 constitute a front pillar 28 (lower portion) on the rear side of the longitudinal direction of the vehicle body. ing.

  The lower ends of the left and right columnar members 26 are respectively continuous with the front end of the rocker 30 that is elongated in the vehicle body longitudinal direction and is coupled to the vehicle width direction end of the floor panel 20 to form the skeleton of the vehicle width direction outer end. Although not shown, the columnar member 26 has a portion extending upward in the vehicle body vertical direction from the upper edge 18B of the dash panel 18, and the upper end of the portion is continuous with the roof skeleton. In addition, the floor panel 20 (floor tunnel 22), the columnar member 26, and the rocker 30 are principally configured of CFRP, similarly to the dash panel 18.

  In the vehicle body front structure 10 described above, the front pillar 28 (pillar portion 24) corresponds to the first high-rigidity portion of the dash panel 18, and the vicinity of the tunnel standing wall 22 </ b> A of the floor tunnel 22 (peripheral portion of the notch portion 18 </ b> A). This corresponds to the second high rigidity portion of the dash panel 18.

  Hereinafter, the structure of the dash panel 18 made of CFRP will be supplemented. As shown in FIGS. 1 and 2, the dash panel 18 includes a dash front panel 32 and a dash rear panel 34. In the dash panel 18, the rearward opening end of the bulging portion 32 </ b> B that is a portion of the dash front panel 32 excluding the upper portion 32 </ b> A bulging forward in the vehicle front-rear direction is closed by the dash rear panel 34 to form a closed cross-section portion 36. is doing. An upper portion 32A of the dash front panel 32 is superimposed on the dash rear panel 34, and an upper end 32C of the dash front panel 32 is a flange 34A extending from the upper end of the dash rear panel 34, and the upper end of the dash panel 18 The closed cross section 38 is formed.

  Then, as shown in FIG. 2 and FIG. 4 which is a front view of the dash front panel 32 removed, internal skeleton members 40 and 42 as panel skeleton portions are provided in the closed cross section 36 of the dash panel 18. It is arranged. As shown in FIG. 7, the inner skeleton member 40 is elongated in the vehicle width direction, and a pair of left and right cross portions 44 extending from the pillar portion 24 to the floor tunnel 22 in the closed cross-section portion 36, and an upper portion of the floor tunnel 22. And a central connecting portion 46 that connects the left and right cross portions 44 so as to straddle the main portion. Further, the inner skeleton member 42 is provided with a pair of left and right so as to be elongated in the vehicle width direction and disposed below the left and right cross portions 44 of the inner skeleton member 40.

  As shown in FIG. 2, each cross portion 44 of the inner skeleton member 40 has front and rear ends of an upper wall 44 </ b> A and a lower wall 44 </ b> B that face the vehicle body in the vertical direction. Are connected to each other to form a rectangular frame-shaped closed section. Similarly, the front and rear ends of the upper wall 42A and the lower wall 42B that face each other in the vertical direction of the vehicle body are respectively connected by the front wall 42C and the rear wall 42D that face each other in the vehicle longitudinal direction. Each of them has a rectangular frame-shaped closed section. Although illustration is omitted, the central connecting portion 46 of the inner skeleton member 40 also has a closed cross-sectional structure of a rectangular frame shape. In this embodiment, the dash front panel 32, the dash rear panel 34, the internal skeleton member 40, and the internal skeleton member 42 are each configured by CFRP.

  As shown in FIGS. 2 and 4, each cross portion 44 of the inner skeleton member 40 and the inner skeleton member 42 are formed at the center of the closed cross section 36 in the vertical direction of the vehicle body (the front side member 12 in the vertical direction of the vehicle body). At the installation position, the front walls 42C and 44C are superimposed on the dash front panel 32, and the rear walls 42D and 44D are superimposed on the dash rear panel 34 so as to overlap each other in the vehicle body vertical direction. That is, the lower wall 44B of the left and right cross portions 44 sandwiched between the dash front panel 32 and the dash rear panel 34 and the upper wall 42A of the internal skeleton member 42 are in contact with each other over substantially the entire surface. In the dash panel 18, the foamed urethane foam U is filled in the closed cross-section portion 36, the closed cross-section portion 38, the internal skeleton member 40, and the internal skeleton member 42.

  Furthermore, as described above, the dash front panel 32, the dash rear panel 34, the inner skeleton member 40, and the inner skeleton member 42, which are the main parts of the dash front panel 32, the inner skeleton member 42, are made of CFRP to connect the metal front side member bracket 16. A plurality of metal collars 48 are provided. As shown in FIGS. 1 and 2, each collar 48 is adapted to be screwed with a bolt 50 as a fastener, and constitutes a fastening means in the present invention together with the bolt 50.

  As shown in FIGS. 4 and 7, the collar 48 has pillars at the left and right cross portions 44 of the inner skeleton member 40, the inner end in the vehicle width direction (periphery of the notch 18 </ b> A), and the outer end in the vehicle width direction. Each of the portions constituting the portion 24 is fixedly provided. In addition, the collar 48 includes an inner skeleton in the closed cross-section portion 36 that constitutes the upper and lower sides of the inner skeleton members 40 and 42 in the closed cross-section portion 36 that constitutes the pillar portion 24, and between the pillar portion 24 and the floor tunnel 22. The members 40 and 42 are fixedly provided on both upper and lower sides. The collar 48 provided on the closed cross-section portion 36 and the inner skeleton members 40 and 42 constituting the pillar portion 24 enables the bolt 50 to be screwed from the outer wall portion 24A (in a direction perpendicular to the outer wall portion 24A) as described above. Are arranged along a direction perpendicular to the outer wall portion 24A.

(Combination structure of front side member and dash panel)
As described above, the front side member rear 14 and the dash panel 18 of the left and right front side members 12 are coupled to each other via the front side member bracket 16 as a load distribution member. As shown in a perspective view in FIG. 3, the front side member bracket 16 includes a flat plate portion 52 as a load input portion having a rear end of the front side member rear 14 joined by welding or the like, and a flat plate portion. 52, a peripheral wall portion 54 extending rearward in the vehicle body front-rear direction from the periphery of 52, a flange portion 56 as a fixed portion projecting outward from the rear end of the peripheral wall portion 54 in the vehicle body front-rear direction, and a flat plate A plurality of (three in this embodiment) middle ribs 58, 60, 62 projecting rearward from the portion 52 in the longitudinal direction of the vehicle body are configured as main portions.

  The front side member bracket 16 has a collar 48 corresponding to a bolt 50 penetrating a mounting hole 64 formed in the flange portion 56 in a state in which the flange portion 56 is overlapped with the dash front panel 32 of the dash panel 18 in the longitudinal direction of the vehicle body. It is the structure fixed to the dash panel 18 by screwing together. An inclined flange 56 </ b> A as an overhanging fixing portion that constitutes the vehicle width direction outer side portion of the flange portion 56 is overlapped with the outer wall portion 24 </ b> A of the pillar portion 24. In this embodiment, the outer end in the vehicle width direction of the flat plate portion 52 is an inclined plate portion 52A that is inclined along the outer wall portion 24A.

  As shown in FIG. 3, the three middle ribs 58, 60, and 62 serving as load transmitting portions are each longitudinal in the vehicle width direction, and the longitudinal center is such that only both ends in the longitudinal direction abut against the dash front panel 32. The part has notches 58A, 60A, 62A.

  As shown in FIGS. 1 and 4 (refer to the imaginary line), the middle rib 58 located at the lowest side in the vertical direction of the vehicle body and the middle rib 60 located at the middle in the vertical direction are respectively in the vehicle width direction with respect to the notches 58A and 60A The inner portions are the inner load transmitting portions 58B and 60B that contact the peripheral edge portion (second high rigidity portion) of the floor tunnel 22 in the dash front panel 32, and the outer portions in the vehicle width direction with respect to the notches 58A and 60A are the dash front portions. The outer load transmitting portions 58C and 60C are in contact with the pillar portion 24 (first high-rigidity portion) of the panel 32. The outer load transmitting portions 58C, 60C are formed with bent portions 58D, 60D at the intermediate portion in the vehicle width direction so as to contact both the main surface S of the dash front panel 32 and the outer wall portion 24A.

  As shown by the imaginary line in FIG. 4, among the three middle ribs 58, 60, 62, the middle rib 62 located on the uppermost side in the vehicle body vertical direction has a dash front panel whose inner portion in the vehicle width direction with respect to the notch 62 </ b> A 32 is an inner load transmission portion 62B that abuts in the vicinity of the floor tunnel 22 (second high-rigidity portion), and an outer portion in the vehicle width direction with respect to the notch portion 62A is a pillar portion 24 (first high-rigidity portion) in the dash front panel 32. 62C, the outer load transmitting portion 62C. The outer load transmitting portion 62C is formed with a bent portion 62D at an intermediate portion in the vehicle width direction so as to contact both the main surface S of the dash front panel 32 and the outer wall portion 24A.

  As shown in FIG. 2, the front side member bracket 16 includes inner load transmitting portions 58B, 60B, 62B and outer load transmitting portions 58C, 60C, 62C of the middle ribs 58, 60, 62, respectively. The left and right cross portions 44 of the inner skeleton member 40 and the installation site of the inner skeleton member 42 are brought into contact with each other in the vertical direction of the vehicle body. More specifically, the inner load transmitting portions 58B and 58C of the middle rib 58 are in contact with the installation site of the lower wall 42B of the inner skeleton member 42 in the dash front panel 32, and the inner load transmitting portions 60B and 60C is brought into contact with the installation site of the upper wall 42A of the inner skeleton member 42 and the lower wall 44B of the cross part 44 in the dash front panel 32, and the inner load transmission parts 62B and 62C of the middle rib 62 are in the dash front panel 32. It is in contact with the installation site of the upper wall 44A of the cross part 44.

  That is, in this embodiment, the upper walls 42A and 44A and the lower walls 42B and 44B extending in a direction perpendicular to the dash front panel 32 correspond to the vertical walls or the reinforcing bodies in the present invention. Further, the front walls 42C and 44C and the rear walls 42D and 44D connecting the upper walls 42A and 44A and the lower walls 42B and 44B correspond to the parallel walls in the present invention.

  The notches 58A, 60A, and 62A of the middle ribs 58, 60, and 62 have obtuse triangular shapes in plan view with the front ends in the longitudinal direction of the vehicle body, that is, the flat plate portion 52 side being apexes (obtuse angles) 58E, 60E, and 62E. The inner notch edges 58F, 60F, and 62F on the inner side in the vehicle width direction with respect to the top portions 58E, 60E, and 62E extend linearly toward the floor tunnel 22 in a plan view, and the top portions 58E, 60E, and 62E are formed. The outer cutout edges 58G, 60G, 62G on the outer side in the vehicle width direction extend linearly toward the pillar portion 24 side. Further, the range where the cutout portions 58A and 60A are formed in the vehicle width direction in the flat plate portion 52 is opposed to the portion (low rigidity portion) between the floor tunnel 22 and the pillar portion 24 in the dash front panel 32. This corresponds to the panel facing portion.

  Next, the operation of this embodiment will be described.

  In the vehicle body front structure 10 having the above configuration, main parts such as the dash panel 18, the floor panel 20 (floor tunnel 22), the columnar member 26, and the rocker 30 are configured by CFRP. Contribute to. When a frontal collision occurs in a vehicle to which the vehicle body front structure 10 is applied, the collision load input to the bumper reinforcement passes through the front side member 12, the front side member rear 14, and the front side member bracket 16 to the dash panel. 18 is input.

  Here, in the vehicle body front structure 10, the front side member bracket 16 that connects the front side member rear 14, which is the rear end of the front side member 12, and the dash panel 18 has the middle ribs 58, 60, 62. The load inputted from the side member rear 14 to the flat plate portion 52 passes through the intermediate ribs 58, 60, 62 and the peripheral portion of the floor tunnel 22 and the pillar portion 24 (the high rigidity portion of the dash panel 18). It is mainly distributed to the rocker 30). Thereby, the collision load is effectively supported by the entire vehicle body.

  For example, in a configuration (comparative example) in which the load from the front side member rear 14 is mainly input to a relatively low rigidity portion between the floor tunnel 22 and the pillar portion 24 in the dash panel 18, the dash front panel 32 Although the impact load is mainly supported by bending (bending load), the dash front panel 32 made of CFRP has a lower toughness than that made of steel and generates cracks or the like with a small displacement. Reinforcing is required to increase the rigidity between the floor tunnel 22 and the pillar portion 24 at 18 (to suppress deformation), which increases the mass of the vehicle body.

  On the other hand, in the vehicle body front structure 10, the collision load is distributed to the existing high-rigidity portion (the vehicle body skeleton in this embodiment) in the dash front panel 32, and therefore the floor tunnel 22 and the pillar portion in the dash panel 18. Therefore, the bending of the dash panel 18 can be suppressed without relying on the reinforcement, and the increase in the mass of the dash panel 18 due to the reinforcement can be prevented or suppressed, that is, the weight of the comparative example can be reduced.

  Further, in the vehicle body front part structure 10, the middle ribs 58, 60, 62 of the front side member bracket 16 are installation sites of the left and right cross portions 44 of the inner skeleton member 40 and the inner skeleton member 42 in the dash front panel 32. In particular, since it is configured to contact the installation site of the lower wall 42B, the upper wall 42A, the lower wall 44B, and the upper wall 44A, the collision load can be more effectively distributed to the floor tunnel 22 and the pillar portion 24 (rocker 30). Can do.

  Moreover, in the vehicle body front structure 10, the inclined flange 56 </ b> A located at the outer end in the vehicle width direction of the front side member bracket 16 is fixed to the outer wall portion 24 </ b> A constituting the front pillar 28 by fastening means including bolts 50. Therefore, a part of the collision load accompanying the frontal collision can be supported as a shear load of the bolt 50 (transmitted to the columnar member 26 and the rocker 30). Thereby, the structure in which the dash front panel 32, that is, the dash panel 18 is less susceptible to bending is realized.

  As described above, the vehicle body front structure 10 according to the embodiment of the present invention can suppress deformation of the vehicle body panel without depending on strength, thereby reducing the weight of the vehicle body using CFRP as a main part. It becomes possible to plan.

  In the above embodiment, the example in which the dash panel 18 includes the internal skeleton members 40 and 42 made of CFRP is shown. However, the present invention is not limited to this, and for example, the dash panel 18 is made of metal instead of the internal skeleton members 40 and 42. Skeleton members (which may be pipes or the like), or flat ribs or horizontal walls (materials may be used) interposed (connected) between the dash front panel 32 and the dash rear panel 34 instead of the internal skeleton members 40 and 42 May be provided, or a member corresponding to the internal skeleton members 40 and 42 may not be provided.

  Further, in the above-described embodiment, an example in which the front pillar 28 has the pillar portion 24, that is, the dash panel 18 forms a part of the front pillar 28 is shown. An end of the panel 18 in the width direction is connected to the columnar member 26, and an inclined flange 56A that is substantially perpendicular to the main surface S is coupled to the outer wall of the columnar member 26 facing the vehicle width direction by a bolt 50. Also good.

  Furthermore, in the above embodiment, an example in which the main part of the vehicle body including the dash panel 18 is made of CFRP is shown. However, the present invention is not limited thereto, and the vehicle body is made of reinforced plastic including fibers other than carbon fibers. The main part may be constituted, or the main part of the vehicle body may be constituted by a metal such as an aluminum alloy or steel.

  Furthermore, in the above embodiment, the example in which the present invention is applied to the front part of the vehicle body has been shown. However, the present invention is not limited to this. For example, the high rigidity part is separated from the rear part of the vehicle body or the side part of the vehicle body. The present invention can be applied to each portion for suppressing deformation (bending) of a vehicle body panel that is arranged.

It is a plane sectional view showing the important section of the body front part structure concerning the embodiment of the present invention. It is a sectional side view which shows the principal part of the vehicle body front part structure which concerns on embodiment of this invention. It is a perspective view of the front side member bracket which comprises the vehicle body front part structure concerning embodiment of this invention. It is a front view which mainly shows the dash panel which comprises the vehicle body front part structure which concerns on embodiment of this invention. 1 is a plan view showing a schematic overall configuration of a vehicle body front structure according to an embodiment of the present invention. 1 is a perspective view showing a schematic overall configuration of a vehicle body front structure according to an embodiment of the present invention. It is a perspective view which shows the internal frame member which comprises the vehicle body front part structure which concerns on embodiment of this invention.

Explanation of symbols

10 Body front structure (body structure)
12 Front side member (body frame)
14 Front side member rear (rear end of body frame)
16 Front side member bracket (Load distribution member)
18 Dash panel (body panel)
22 Floor tunnel (floor tunnel part, second high rigidity part)
24 pillar part (first high rigidity part)
24A outer wall (overhanging wall)
28 Front pillar 40/42 Internal frame member (panel frame)
42A / 44A Upper wall (vertical wall / reinforcing body)
42B / 44B Lower wall (vertical wall / reinforcement)
42C / 44C Front wall (Parallel wall)
42D / 44D Rear wall (parallel wall)
50 bolts (penetrating member, fastening means)
52 Flat part (load input part)
56 Flange (fixed part)
56A Inclined flange (overhang fixed part)
58, 60, 62 Medium rib (load transmission part)

Claims (5)

A vehicle body panel in which a first high-rigidity portion and a second high-rigidity portion that are higher in rigidity than other portions are provided apart from each other in the vehicle width direction ;
From the fixed portion fixed to the vehicle body panel, a load input portion including a panel facing portion facing the portion between the first high rigidity portion and the second high rigidity portion of the vehicle body panel, and the load input portion A load distribution member having a load transmission portion provided so as to be able to transmit a load to each of the first high-rigidity portion and the second high-rigidity portion in the vehicle body panel;
With
The vehicle body panel has a panel skeleton from the first high-rigidity part to the second high-rigidity part,
The load transfer portion of the load distribution member is partially protruded in the vehicle vertical direction from the portion including the panel facing portion in the load input portion toward the panel skeleton side, and the load input portion side is The vehicle body structure in which the opposite end surface is in contact with the panel skeleton installation site in the vehicle vertical direction of the first high rigidity portion and the second high rigidity portion of the vehicle body panel. The panel skeleton has a closed cross-sectional structure in which a plurality of vertical walls provided along the thickness direction of the vehicle body panel and opposed to each other are connected by a pair of parallel walls along the main surface direction of the vehicle body panel. And
A plurality of load transmitting portions of the load distribution member are provided apart from each other in the facing direction of the plurality of vertical walls, and each of the end surfaces opposite to the load input portion side has the first height of the vehicle body panel. The vehicle body structure according to claim 1, wherein the vehicle body structure is in contact with an installation site of the vertical wall in the rigid portion and the second highly rigid portion. The first high-rigidity portion is configured by providing a protruding wall portion protruding in the thickness direction of the vehicle body panel,
The vehicle body structure according to claim 1, wherein the fixing portion of the load distribution member includes an overhanging fixing portion that is continuous with the load input portion and is fixed to the overhanging wall portion.   The vehicle body structure according to claim 3, wherein the overhang wall portion and the overhang fixing portion are fixed by fastening means including a penetrating member penetrating the overhang wall portion and the overhang fixing portion. The vehicle body panel includes a vehicle body of a floor tunnel portion in which the first high-rigidity portion is a connection portion with a front pillar at an outer end in the vehicle width direction, and the second high-rigidity portion is disposed at the center in the vehicle width direction. It is a dash panel that is the front opening end in the front-rear direction,
The vehicle body longitudinal direction rear end portion of the vehicle body skeleton that extends in the vehicle longitudinal direction on the front side in the vehicle longitudinal direction with respect to the dash panel is fixed to the load input portion of the load distribution member. 5. The vehicle body structure according to any one of items 4.

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