JP2016112916A - Front structure of vehicle body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the load transmission performance from a dash cross member to a hinge pillar and a side sill at front collision.SOLUTION: The front structure of a vehicle body comprises: a pair of left and right vertically extending hinge pillars 20; a dash panel 1 disposed between the pair of hinge pillars 20; a front side frame extending to the front of the dash panel 1; and a dash cross member 90 extending from a dash panel connection part 3S of the front side frame in a vehicle width direction in the rear face of the dash panel 1 and having a vehicle outside end bonded to the hinge pillar 20. The node members 60A, 160 are installed to vertically partition the internal space 20Z of the hinge pillar 20. The node member 60A is provided at a position corresponding to the binding site 20D of the dash cross member 90 in the hinge pillar 20, is bonded to the rear of the hinge pillar 20 and is also bonded to the dash cross member 90 including the hinge pillar 20.SELECTED DRAWING: Figure 1

Description

  The present invention includes a pair of left and right hinge pillars extending vertically, a dash panel disposed between the pair of left and right hinge pillars, a front side frame extending forward of the dash panel, and a dash panel of the front side frame on the rear surface of the dash panel. The present invention relates to a vehicle front body structure including a dash cross member extending in a vehicle width direction from a connecting portion and having a vehicle outer end portion coupled to a hinge pillar.

  Conventionally, in a front body structure of a vehicle, a pair of left and right hinge pillars, a dash panel disposed between a pair of left and right hinge pillars, a front side frame extending in front of the dash panel, and a dash panel A structure is known that includes a dash cross member that extends in the vehicle width direction from the dash panel connection portion of the front side frame on the rear surface, and has an outer vehicle end connected to a hinge pillar (see, for example, Patent Document 1). .

  The “front body structure of an automobile” of Patent Document 1 is a cross member (dash cross) that connects a dash abutting portion of a front side frame and a hinge pillar between rear portions of a front frame disposed on the left and right sides of the front portion of the vehicle body. Member), and an inner end of the cross member in the vehicle width direction is joined to the tunnel portion via a first connecting member extending in the vertical direction, and both outer ends in the vehicle width direction include a cowl side panel and It is connected to the inner surface of the hinge pillar.

  As a result, a plurality of load paths such as a load path from the front frame to the tunnel part and a load path from the front frame to the side sill are secured to improve the transmission performance of the front collision load.

  However, according to the description of Patent Document 1, the configuration of a specific coupling portion where the outer end portion of the cross member in the vehicle width direction is coupled to the hinge pillar, and the efficient efficiency from the dash cross member to the hinge pillar and the side sill at the time of the front collision. There is no mention of a specific configuration for load transmission, and there is room for further study in order to improve the transmission performance of the front impact load.

Utility Model Registration No. 2531718

  Therefore, an object of the present invention is to improve the load transmission performance from the dash cross member to the hinge pillar and the side sill at the time of the front collision.

  The present invention includes a pair of left and right hinge pillars extending vertically, a dash panel disposed between the pair of left and right hinge pillars, a front side frame extending forward of the dash panel, and the front side on the rear surface of the dash panel. A vehicle body structure including a dash cross member extending in a vehicle width direction from a dash panel connection portion of a frame and having a vehicle outer end portion coupled to the hinge pillar, wherein the interior space of the hinge pillar is vertically moved A node member is provided, and the node member is provided at a position corresponding to a coupling portion of the dash cross member in the hinge pillar, and is coupled to a rear portion of the hinge pillar, and the dash is interposed through the hinge pillar. It is characterized by being connected to a cross member.

  According to the above configuration, the dash at the time of the front collision is suppressed by suppressing the collapse of the cross-section of the internal space of the hinge pillar corresponding to the bonding site of the dash cross member and promoting the load transmission to the rear (side sill direction). A load from the cross member to the hinge pillar (or side sill) can be efficiently transmitted.

  Therefore, it is possible to improve the load transmission performance from the dash cross member to the hinge pillar and the side sill at the time of the vehicle front collision.

  According to this aspect of the invention, the end of the joint member on the dash cross member side is inclined upward toward the vehicle front side, and the hinge pillar side end of the dash cross member is inclined upward toward the vehicle front side. The dash cross member side end of the joint member and the dash cross member side end of the dash cross member are coupled via the hinge pillar.

  According to the said structure, the load transmission effect from a dash cross member to the hinge pillar lower part, ie, a side sill direction, can be improved further.

  Note that the end of the knot member on the dash cross member side and the end of the dash cross member on the hinge pillar side have the same inclination angle as long as they are inclined upward toward the front of the vehicle. Although different inclination angles may be used, the same inclination angle is preferable because the load transmission effect can be improved more efficiently than the different inclination angles.

  According to the aspect of the invention, the node member includes an upper surface portion, a lower surface portion disposed below the upper surface portion, a bottom surface portion connecting the rear end of the upper surface portion and the rear end of the lower surface portion. The end of the upper end of the dash cross member on the hinge pillar side end is the upper end of the node member, and the lower end of the dash cross member is the end of the hinge pillar side end of the lower surface of the node member. The end portions are coupled to each other through the hinge pillar, and the bottom surface portion of the joint member is coupled to the hinge pillar.

  According to the above configuration, the load from the dash cross member at the time of the front collision to the hinge pillar can be transmitted more efficiently, and the load transmission performance from the dash cross member to the hinge pillar and the side sill at the time of the front collision of the vehicle is improved. be able to.

  According to this invention, it is possible to improve the load transmission performance from the dash cross member to the hinge pillar and the side sill at the time of the front collision.

The perspective view which looked at the vehicle body front part structure from the compartment side. The perspective view which looked at the vehicle body front part structure from diagonally right rear. AA arrow line sectional drawing in FIG. FIG. 4 is a cross-sectional view taken along line BB in FIG. 3. The perspective view of an inclined node member. The enlarged view of the area | region Z in FIG. 4 which abbreviate | omitted illustration of the hinge pillar inner panel. Explanatory drawing of the inclined node member of 2nd Embodiment shown corresponding to FIG. The perspective view of the inclined node member of 2nd Embodiment. The right view of the node member of 1st Embodiment and 2nd Embodiment.

An embodiment of the present invention will be described in detail with reference to the drawings.
In the figure, the arrow (F) indicates the front of the vehicle body, the arrow (R) indicates the rear of the vehicle body, the arrow (IN) indicates the vehicle interior, the arrow (OUT) indicates the vehicle exterior, and the arrow (U) indicates the vehicle body upward. Indicates.

  The drawings show the front vehicle body structure of the vehicle according to the present embodiment, FIG. 1 shows a perspective view of the vehicle body front structure viewed from the passenger compartment side, and FIG. 3 shows a cross-sectional view taken along the line AA in FIG. 2, FIG. 4 shows a cross-sectional view taken along the line BB in FIG. 3, FIG. 5 shows a perspective view of the inclined node member, FIG. 6 shows an enlarged view of a region Z in FIG. 4 in which the hinge pillar inner panel is omitted, and FIG. 7 shows an attachment portion of the inclined node member of the second embodiment shown corresponding to FIG. 6 to the hinge pillar. FIG. 8 shows a perspective view of the inclined node member of the second embodiment, FIG. 9 (a) shows a right side view of the inclined node member of the first embodiment, and FIG. ) Shows a right side view of the integrated joint member of the second embodiment. Note that the inner panel 20B of the front hinge pillar 20 in FIGS. 1, 6, and 7 is not shown.

  Hereinafter, the front structure of the vehicle 10 according to the embodiment of the present invention will be described.

As shown in FIGS. 1 to 3, a vehicle body front portion of a vehicle 10 according to the present embodiment partitions an engine room Z1 in which an engine is accommodated from a vehicle compartment Z2 on which a passenger is boarded. A dash panel 1 constituting the front wall portion is provided.

  As shown in FIGS. 1 to 4, a pair of left and right front hinge pillars 20 and 20 (only one of which is shown) that pivotally supports a front door (not shown) are provided on the left and right ends of the dash panel 1 in the vertical direction. It is erected so as to extend. The front hinge pillar 20 (hereinafter referred to as “hinge pillar 20”) has a closed cross-sectional structure extending vertically.

  As shown in FIGS. 1 to 4, particularly FIG. 3, the hinge pillar 20 includes a substantially hat-shaped outer panel 20 </ b> A that bulges outward in the vehicle width direction, an inner panel 20 </ b> B inside in the vehicle width direction, and a gap therebetween. It is comprised by the rain panel 20C arrange | positioned as a reinforcement member, The closed cross section extended in an up-down direction is comprised by mutually joining each flange part of 20 A of outer panels, and the inner panel 20B. In the internal space 20Z of the hinge pillar 20, node members 60 (for example, see 60A, 60B, and 60C in FIG. 1) as reinforcing members that partition the internal space 20Z vertically are arranged at predetermined intervals in the vertical direction. Yes.

  As shown in FIGS. 1 and 2, a side sill 12 extending rearward from the lower portion of the hinge pillar 20 is coupled to the lower portion of the hinge pillar 20. The side sill 12 has a closed cross-sectional structure extending continuously from the hinge pillar 20 in the rear direction of the vehicle body.

  Further, as shown in FIG. 2, the front pillar 13 extends rearward and upward from the upper end portion of the hinge pillar 20. The front pillar 13 has a closed cross-sectional structure that continuously extends rearward and upward from the hinge pillar 20.

  A roof side rail (not shown) extending in the front-rear direction is provided behind the front pillar 13, and a center pillar (not shown) connected in the vertical direction is provided between the roof side rail and the side sill 12.

  As shown in FIG. 2, in addition to the hinge pillar 20, the side sill 12, and the front pillar 13 described above, a door opening A as a lift for a front seat occupant surrounded by a roof side rail and a center pillar (not shown) is provided. The door opening A is formed and opened and closed by a front door (not shown).

  In the present embodiment, the outer panels of the hinge pillar 20, the side sill 12, the front pillar 13, the roof side rail, and the center pillar are integrally formed as a side frame outer.

  As shown in FIG. 2, a pair of left and right apron reinforcements 30 and 30 (only one is shown in the drawing) extend forward from the upper end side of the left and right hinge pillars 3. This apron reinforcement 30 (hereinafter abbreviated as “apron rain 30”) has an apron rain closed section extending in the vehicle front-rear direction by joining and fixing an inner panel (not shown) and an outer panel 30A. It is a rigid member.

  As shown in FIGS. 2 and 3, the pair of left and right front side frames 3 and 3 are positioned substantially parallel to the apron rain 30 in a plan view and spaced apart inward and downward in the vehicle width direction. (Only one is shown) extends in the longitudinal direction of the vehicle body. The front side frame 3 is a vehicle body rigid member having a front side closed cross section that extends in the vehicle front-rear direction by joining and fixing the inner panel 3B and the outer panel 3A. The front side frame 3 constitutes a dash panel connection portion 3S whose rear end portion is connected to the dash panel 1, and extends forward from the dash panel connection portion 3S at a position higher than the floor panel 8 (see FIG. 3). .

  As shown in FIGS. 1, 3, and 4, the dash panel 1 has a dash panel connecting portion 3 </ b> S to which the front side frame 3 is connected and the hinge pillar 20 on the vehicle compartment Z <b> 2 side so as to straddle the wheel house 5 (dash A dash cross member 90 is provided for connection on the rear surface side of the panel 1. The dash cross member 90 has a cross-sectional hat shape on the dash cross member main body portion 91 formed in a cross-sectional hat shape extending in the vehicle width direction, the surface on the vehicle compartment Z2 side of the dash panel 1, and the outer surface of the hinge pillar inner panel 20B. And a flange portion 92 formed along the peripheral edge of the open mouth side, and a closed cross-sectional structure is formed between the dash panel 1 and the hinge pillar inner panel 20B (see the figure).

  As shown in FIGS. 1, 4 and 6, the outer end of the dash cross member 90 in the vehicle width direction, that is, the plurality of node members 60 (60A, 60B, 60C) provided in the inner space 20Z of the hinge pillar 20 is provided. Among them, hinge pillar joints projecting upward from the outer end portion (the end portion on the hinge pillar 20 side) of the dash cross member main body portion 91 in the vehicle width direction are provided at portions corresponding to the node members 60A and 60C such as the inclined node member 60A described later. An upper flange portion 92U is provided, and a hinge pillar-joined lower flange portion 92D that protrudes downward is provided, both of which protrude from the other flange portion 92 formed on the periphery of the dash cross member 90.

  Two bolt insertion holes 93 through which bolts are inserted at predetermined intervals are formed in the hinge pillar joined upper flange portion 92U and the hinge pillar joined lower flange portion 92D of the dash cross member 90. In addition, the upper end side portion 92Ua of the hinge pillar joined upper flange portion 92U is formed so as to be inclined upward toward the vehicle front side (see FIG. 4).

  As shown in FIG. 4, the dash panel connecting portion 3S of the front side frame 3 is joined to the front end portion 11La of the floor frame lower 11L that curves and extends rearward and downward along the inclined front surface of the dash panel 1. Yes.

  As shown in FIG. 3, the floor frame upper 11 </ b> U has a hat-shaped cross section, and coincides with the floor frame lower 11 </ b> L (see FIG. 4) extending in the vehicle front-rear direction below the floor panel 8 in the vehicle width direction. The floor panel 8 forms a closed cross section extending in the longitudinal direction of the vehicle body.

  The lower portion of the dash panel 1 and the floor panel 8 are provided with a tunnel portion 9 that extends in the front-rear direction at the center in the vehicle width direction and bulges upward (see FIG. 2).

  2 denotes the front tire (in front of the upper left and right side portions of the dash panel 1, on the outer side in the vehicle width direction than the front side frame 3 and on the inner side in the vehicle width direction than the apron rain 30). This is a suspension tower provided to support the upper part of a suspension device (not shown) provided corresponding to the illustration (not shown). Reference numeral 7 in FIG. 1 is a cowl portion provided on the upper portion of the dash panel 1 so as to extend in the vehicle width direction. Reference numeral 5 in FIGS. 1, 3, and 4 is a wheel house for a front tire. It is.

  Although not shown, a bumper reinforcement extending in the vehicle width direction is attached between the left and right plates attached across the front side frame 3 and the front end of the apron rain 30 via a crash can. (Not shown). The crash can is configured to compress and deform in the longitudinal direction of the vehicle body when an impact load in the longitudinal direction of the vehicle body is input.

  By the way, in this Embodiment, as shown in FIG. 2, the connection member 40 extended in the direction which inclines upward toward the vehicle front side is provided by connecting the hinge pillar 20 and the apron rain 30 in the form of braces.

  As shown in FIGS. 2 and 3, the front end portion (upper end portion) of the upper surface portion 40 </ b> U of the connecting member 40 is abutted against and joined to the lower surface portion of the apron rain 30, and the rear end portion of the upper surface of the connecting member 40. The (lower end) is abutted against and joined to the front surface of the hinge pillar 20.

  As described above, in the internal space 20Z of the hinge pillar 20, a plurality of node members 60 (60A, 60B, 60C) as reinforcing members for partitioning the hinge pillar 20 up and down are provided at predetermined intervals along the vertical direction of the hinge pillar 20. As shown in FIGS. 2 and 3, the joint portion 20 </ b> C with the connecting member 40 in the inner space 20 </ b> Z of the hinge pillar 20 includes an inclined node member 60 </ b> A.

  On the other hand, as shown in FIGS. 1, 3, and 6, the inclined node member 60 </ b> A is located at a position corresponding to the coupling portion 20 </ b> D of the dash cross member 90 in the hinge pillar 20, specifically, the dash cross in the internal space 20 </ b> Z of the hinge pillar 20. The member 90 is coupled to the dash cross member 90 via the hinge pillar inner panel 20B at the coupling site 20Zd.

  That is, as shown in FIG. 3, the coupling site 20 </ b> C of the connecting member 40 in the hinge pillar 20 and the coupling site 20 </ b> D of the dash cross member 90 in the hinge pillar 20 are disposed at substantially the same height.

Next, the inclined node member 60A will be described in detail below.
As shown in FIGS. 1, 2, 5, and 9 (a), the inclined node member 60 </ b> A is an inclined partition surface portion 61 that partitions the interior space 20 </ b> Z of the hinge pillar 20 up and down in a posture inclined upward toward the vehicle front side. And the inclined partition surface part 61 is formed with the inner panel 20B of the hinge pillar 20 and the node member flange part 62 connected to the opposing surface of the outer panel 20A (see FIG. 5).

  The inclined partition surface portion 61 has a front height having a long side that can be installed between the front surface portion 20F and the rear surface portion 20R of the hinge pillar 20 when the inner space 20Z of the hinge pillar 20 is disposed so as to be inclined upward toward the vehicle front side. A rear plate is formed in a substantially rectangular plate shape (see FIGS. 2 and 6), and a reinforcing bead 68 protruding in an X shape that crosses along a diagonal line is formed on the upper surface portion thereof.

  The node member flange portion 62 is formed to protrude in different directions in the vertical direction at the left and right ends in the vehicle width direction and at each end in the vehicle front-rear direction (vertical direction).

Specifically, as shown in FIG. 5 and FIG. 9A, as the node member flange portion 62, a vehicle width direction inner flange that protrudes upward from an inner side edge portion of the inclined partition surface portion 61 in the vehicle width direction. A vehicle width direction outer flange portion 62b projecting downward from an outer end side portion in the vehicle width direction of the inclined partition surface portion 61, and a vehicle width projecting upward from a front end side portion (upper end portion) of the inclined partition surface portion 61. The direction upper side flange part 62c and the vehicle width direction lower side flange part 62d which protrudes below from the rear-end side part (lower end part) of the inclination partition surface part 61 are provided.
Bolt insertion holes 63 through which bolts are inserted are formed at two positions at predetermined intervals in the vehicle width direction inner flange portion 53 of the inclined node member 60A.

  As shown in FIG. 5 and FIG. 9A, the upper end side portion 62au of the vehicle width direction inner side flange portion 62a and the lower end side portion 62bd of the vehicle width direction outer side flange portion 62b are determined by the inclination angle of the inclined partition surface portion 61. It is formed so as to be inclined upward toward the front of the vehicle so as to have substantially the same angle.

  As shown in FIGS. 2 and 3, in the state in which the inclined partition surface portion 61 is disposed in the inner space 20Z of the hinge pillar 20 so as to be inclined upward toward the vehicle front side, The inner panel 20B is overlapped from the outer surface of the inner panel 20B, and the vehicle width direction outer flange portion 62b, the outer surface 20T of the hinge pillar 20 (or the outer surface 20T of the rain panel 20C of the hinge pillar 20), and the vehicle width direction upper flange portion 62c The front surface 20F of the hinge pillar 20 and the vehicle width direction lower flange portion 62d and the rear surface 20R of the hinge pillar 20 are overlapped with each other from the inner surface side of the outer panel 20A of the hinge pillar 20 and joined by spot welding.

  As a result, as shown in FIGS. 1 to 3, the inclined node member 60 </ b> A has an inner space 20 </ b> Z of the hinge pillar 20 at the connecting portion 20 </ b> D of the dash cross member 90 in the hinge pillar 20 and the connecting portion 20 </ b> C of the connecting portion in the hinge pillar 20. Is arranged so as to partition the top and bottom.

  Here, the vehicle width direction inner flange portion 62a of the inclined node member 60A and the hinge pillar joined upper flange portion 92U of the dash cross member 90 are coupled via the inner panel 20B of the hinge pillar 20 (FIGS. 1 and 2). To FIG. 4 and FIG. 6).

  Specifically, the vehicle width direction inner flange portion 62a of the inclined node member 60 and the hinge pillar joined upper flange portion 92U of the dash cross member 90 are overlapped via the inner panel 20B of the hinge pillar 20, and the vehicle width direction inner flange portion is overlapped. Bolt insertion holes 63 and 93 formed in each of the portion 62a, the inner panel 20B, and the hinge-pillar joint upper flange portion 92U communicate with each other, and the inner side in the vehicle width direction by bolts or the like (not shown) inserted through these bolt insertion holes 63 and 93 The flange 62a and the hinge pillar joined upper flange 92U are fastened together via the inner panel 20B.

  As shown in FIG. 6, the vehicle width direction inner flange portion 62a of the inclined node member 60A and the hinge pillar joined upper flange portion 92U of the dash cross member 90 are coupled via the inner panel 20B of the hinge pillar 20 as described above. As described above, the upper end side portion 62au of the vehicle width direction inner flange portion 62a and the upper end side portion 92Ua of the hinge pillar joined upper flange portion 92U coincide with each other at an inclination angle inclined upward toward the front side.

  As shown in FIG. 6, the hinge pillar joined lower flange portion 92 </ b> D of the dash cross member 90 is also coupled to the inner panel 20 </ b> B of the hinge pillar 20 as described above, but is inclined in the internal space 20 </ b> Z of the hinge pillar 20. The joint member 62 </ b> C, which is located below the joint member 60 </ b> A, is coupled to the vehicle width direction inner flange portion 62 </ b> Ca by an unillustrated bolt or the like via the inner panel 20 </ b> B of the hinge pillar 20.

  As described above in detail, the front vehicle body structure of the present embodiment has a pair of left and right hinge pillars 20, a dash panel 1 disposed between the pair of left and right hinge pillars 20, and extends forward of the dash panel 1. A front side frame 3 and a dash cross member 90 extending in the vehicle width direction from the dash panel connecting portion 3S of the front side frame 3 on the rear surface of the dash panel 1 and having an outer vehicle end connected to the hinge pillar 20. In the vehicle front body structure, an inclined node member 60A is attached as a node member that vertically divides the internal space 20Z of the hinge pillar 20, and the inclined node member 60A is connected to the dash cross member 90 in the hinge pillar 20. 20D is provided at a position corresponding to 20D, and is also coupled to the rear part of the hinge pillar 20, The error 20 is interposed in which is coupled to the dash cross member 90 (FIG. 1, FIG. 3, see FIG. 6).

  According to the above-described configuration, the front space 20Z of the hinge pillar 20 corresponding to the coupling portion 20D of the dash cross member 90 is prevented from collapsing in the cross section and promotes load transmission to the rear (side sill direction). The load from the dash cross member 90 at the time of a collision to the hinge pillar 20 (and also the side sill 12) can be efficiently transmitted.

  Therefore, it is possible to improve the load transmission performance from the dash cross member 90 to the hinge pillar 20 and the side sill at the time of the vehicle front collision.

  More specifically, the vehicle flange direction inner flange portion 62 of the inclined node member 60A and the hinge pillar joined upper flange portion 92U of the dash cross member 90 are joined via the inner panel 20B of the hinge pillar 20 (the inner surface of the hinge pillar 20). The inclined node member 60A is provided at a position corresponding to the coupling site 20D of the dash cross member 90 in the hinge pillar 20, and thereby, the cross-section collapse of the internal space 20Z of the hinge pillar 20 corresponding to the coupling site 20D of the dash cross member 90 is performed. Can be suppressed.

  Further, by joining the lower flange portion 62d in the vehicle width direction of the inclined node member 60A to the rear surface 20R of the hinge pillar 20 from the inner surface side, the inclined node member 60A is also coupled to the rear portion of the hinge pillar 20, and the hinge pillar 20 is Since it is interposed and coupled to the dash cross member 90, a structure that promotes load transmission in the rear (side sill direction) can be obtained.

  Therefore, the load from the dash cross member 90 at the time of the front collision to the hinge pillar 20 (and also the side sill 12) can be efficiently transmitted, and the load from the dash cross member 90 to the hinge pillar 20 and the side sill 12 at the time of the front collision of the vehicle. Transmission performance can be improved (see arrow F1 in FIG. 1).

  According to the aspect of the present invention, the vehicle width direction inner flange portion 62a as the end portion of the inclined node member 60A on the dash cross member 90 side is formed to be inclined upward toward the vehicle front side, and the hinge pillar of the dash cross member 90 is formed. A hinge pillar joint upper flange portion 92U as an end portion on the 20 side is formed so as to be inclined upward toward the vehicle front side, and the vehicle width direction inner flange portion 62a and the hinge pillar joint upper flange portion 92U are joined via the hinge pillar 20. (See FIG. 1, FIG. 4, FIG. 5, FIG. 6, FIG. 9 (a)).

  According to the above configuration, even when the inclined node member 60 </ b> A exists in the coupling portion 20 </ b> D of the dash cross member 90 in the internal space 20 </ b> Z of the hinge pillar 20, this inclination is applied when a load is transmitted from the dash cross member 90 to the hinge pillar 20. The transmission load does not concentrate on the shaped node member 60 </ b> A, and the load can be smoothly transmitted and absorbed from the dash cross member 90 to the hinge pillar 20.

  Therefore, the load transmission effect from the dash cross member 90 to the lower part of the hinge pillar 20, that is, in the side sill direction can be further enhanced (see arrow F <b> 1 in FIG. 1).

  Further, according to the aspect of the present invention, the integrated node member 160 as the node member includes the inclined upper surface portion 161U as the upper surface portion, the lower surface portion 161D disposed below the inclined upper surface portion 161U, and the inclined surface. A hinge pillar joined upper flange portion 92U as an end portion of the upper end of the dash cross member 90 on the side of the hinge pillar 20 has a bottom surface portion 162d connecting the rear end of the upper surface portion 161U and the rear end of the lower surface portion 161D. A vehicle-width-direction inner flange portion 162Ua as an end portion of the upper surface of the integrated node member 160 and a hinge pillar joint lower flange portion 92D as an end portion of the lower surface of the dash cross member 90 on the hinge pillar 20 side are integrated node members. The bottom surface inner flange portion 162Da as an end portion of the bottom surface of the 160 is coupled to the bottom of the integral knot member 160 through the hinge pillar 20 respectively. Parts 162d is one that is coupled to the hinge pillar 20 (see FIGS. 7 and 8, FIG. 9 (b)).

  According to the above configuration, the load from the dash cross member 90 at the time of the front collision to the hinge pillar 20 can be more efficiently transmitted, and the load from the dash cross member 90 to the hinge pillar 20 and the side sill 12 at the time of the front collision of the vehicle. Transmission performance can be improved.

  More specifically, according to the above configuration, the hinge pillar joint upper flange portion 92U of the dash cross member 90 is the vehicle width direction inner flange portion 162Ua of the integrated node member 160 and the hinge pillar joint lower flange portion 92D of the dash cross member 90 is. Since the lower joint 162Da of the integrated joint member 160 is connected to the lower flange portion 162Da via the hinge pillar 20, the hinge pillar joined upper flange portion 92U of the dash cross member 90 is transmitted when a load is transmitted from the dash cross member 90 to the hinge pillar 20. From the dash cross member 90 through both the inner flange portion 162Ua of the integrated joint member 160 in the vehicle width direction and the lower flange portion 162Da of the integrated joint member 160 from the lower flange portion 92D of the hinge pillar joint of the dash cross member 90. load The can be efficiently transmitted by integrated section member 160. Furthermore, according to the above configuration, since the bottom surface portion 162d of the integrated node member 160 is coupled to the hinge pillar 20, the load transmitted to the integrated node member 160 is transferred from the bottom surface portion 162d of the integrated node member 160 to the hinge pillar 20. Can be transmitted efficiently.

  Therefore, the load from the dash cross member 90 at the time of the front collision to the hinge pillar 20 can be more efficiently transmitted, and the load transmission performance from the dash cross member 90 to the hinge pillar 20 and the side sill 12 at the time of the front collision of the vehicle is improved. Can be made.

In correspondence between the configuration of the present invention and the other embodiments described above,
The node member of the present invention corresponds to the inclined node member 60A and the integrated node member 160,
Similarly,
The end on the dash cross member side of the node member corresponds to the inner flange portion 62a in the vehicle width direction,
The hinge pillar side end of the dash cross member of the joint member corresponds to the lower flange portion 62d in the vehicle width direction,
The end of the upper end of the dash cross member on the hinge pillar side end corresponds to the hinge pillar joined upper flange portion 92U,
The end of the lower side of the dash cross member on the hinge pillar side end corresponds to the hinge pillar joined lower flange 92D,
The upper surface portion corresponds to the inclined upper surface portion 161U,
The end of the upper surface of the node member corresponds to the inner flange portion 162Ua in the vehicle width direction,
The end portion of the lower surface of the node member corresponds to the lower surface inner flange portion 162Da, but the present invention is not limited to the configuration of the above-described embodiment.

  As described above, the present invention includes, for example, a pair of left and right hinge pillars, a dash panel disposed between the pair of left and right hinge pillars, a front side frame extending in front of the dash panel, and a dash panel. The present invention is useful for a front body structure of a vehicle including a dash cross member that extends in the vehicle width direction from the dash panel connection portion of the front side frame on the rear surface and has an outer vehicle end connected to a hinge pillar.

DESCRIPTION OF SYMBOLS 1 ... Dash panel 3 ... Front side frame 3S ... Dash panel connection part 20 of front side frame ... Hinge pillar 20D ... Connection part 20Z of dash cross member in hinge pillar ... Inner space 60A of hinge pillar ... Inclined node member (node member)
62a ... Inner flange portion in the vehicle width direction (end portion on the dash cross member side of the node member)
62d: Lower flange portion in the vehicle width direction (hinge pillar side end of the dash cross member of the node member)
90 ... Dash cross member 92U ... Hinge pillar joining upper flange part (end part of hinge pillar side end part of upper surface of dash cross member)
92D ... Hinge pillar joint lower flange (end of hinge pillar side end of bottom surface of dash cross member)
160 .. Integrated joint member (joint member)
161U: Inclined upper surface (upper surface)
161D: Lower surface portion 162d ... Bottom surface portion 162Ua ... Inner flange portion in the vehicle width direction (end portion of the upper surface of the node member)
162 Da: lower surface inner flange (end of lower surface of node member)

Claims (3)

A pair of left and right hinge pillars extending vertically;
A dash panel disposed between the pair of left and right hinge pillars;
A front side frame extending forward of the dash panel;
A vehicle front body structure including a dash cross member extending in a vehicle width direction from a dash panel connection portion of the front side frame on a rear surface of the dash panel and having a vehicle outer end portion coupled to the hinge pillar. And
A node member for vertically partitioning the internal space of the hinge pillar is attached,
The node member is provided at a position corresponding to a coupling site of the dash cross member in the hinge pillar, and is coupled to a rear portion of the hinge pillar, and is coupled to the dash cross member via the hinge pillar. Front body structure. An end of the node member on the dash cross member side is formed to be inclined upward toward the vehicle front side, and a hinge pillar side end portion of the dash cross member is formed to be inclined upward toward the vehicle front side. The front body structure of a vehicle according to claim 1, wherein an end portion on a dash cross member side and an end portion on a hinge hinge side of the dash cross member are coupled via the hinge pillar. The node member has an upper surface portion, a lower surface portion disposed below the upper surface portion, and a bottom surface portion connecting the rear end of the upper surface portion and the rear end of the lower surface portion,
The end of the upper end of the dash cross member on the hinge pillar side end is the end of the upper surface of the node member, and the end of the lower end of the dash cross member on the hinge pillar side end is the end of the lower surface of the node member; Each coupled via the hinge pillar,
The front body structure of a vehicle according to claim 1, wherein a bottom surface portion of the node member is coupled to the hinge pillar.

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