JP2017136870A - Vehicle body structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase support rigidity of a damper base on an upper member, and improve workability of connecting of the upper member and the damper base.SOLUTION: An E-shaped cross section is formed in cooperation of an upper member 18 with a U-shaped cross section and a reinforcement frame 23 with an inverted L-shaped cross section, a squarish eight-shaped cross section is formed by closing an open part of the E-shaped cross section with a back plate 24, an upper wall 25a of a damper base 25 is connected to an upper wall 18c of the upper member 18 by aligning them with each other, and therefore, not only can a collision load be transferred to a front pillar lower 12 via the upper member 18 and the reinforcement frame 23, but also a load from the damper base 25 can be supported by transferring the load to the upper wall 18c of the upper member 18 comprising the squarish eight-shaped cross section. In addition, since an overlapped part of the damper base 25, the upper member 18 and the reinforcement frame 23 is exposed from an open part of the E-shaped cross section before the back plate 24 is installed, workability of such connecting is improved.SELECTED DRAWING: Figure 3

Description

  The present invention includes a front pillar lower having a closed cross section, an upper member having a U-shaped cross section that opens outward in the vehicle width direction and extending forward from the front pillar lower, a front lower side of the upper member, and a vehicle A lower member that extends inward in the width direction and is connected to the front end of the front side frame, a damper base that is connected to an inner wall in the vehicle width direction of the upper member, and a vertical direction that is connected to the upper portion of the upper member and faces the lower member The present invention relates to a vehicle body structure including a reinforcing frame with a reduced height.

  Patent Document 1 below discloses that a damper base outer wall in the vertical direction of an inner wall in the vehicle width direction of an upper member of a hollow closed cross section extending forward from the front pillar is connected to the outer wall in the vehicle width direction that supports the upper end of the damper. is there.

  In addition, the upper member that extends forward from the front pillar is configured as a hollow closed section in the shape of a letter with a horizontal partition wall in the middle in the vertical direction, and the outer wall in the vehicle width direction of the damper base (suspension tower) that supports the upper end of the damper Is connected to the lower end of the upper member as disclosed in Patent Document 2 below.

Japanese Patent No. 4728296 Japanese Patent No. 3551914

  By the way, the thing described in the above-mentioned patent document 1 is insufficient in support rigidity of the damper base because the outer wall in the vehicle width direction of the damper base is connected to the middle part in the vertical direction of the inner wall in the vehicle width direction of the upper member having low rigidity. As a result, the ride comfort may be reduced.

  Further, the one described in Patent Document 2 also does not necessarily have sufficient support rigidity for the damper base since the outer wall in the vehicle width direction of the damper base is connected to the lower end of the upper member. In order to increase the support rigidity of the damper base, it is only necessary to connect the outer wall in the vehicle width direction of the damper base to the position of the partition wall in the vertical middle part of the upper member of the day-shaped cross section. There is a problem in that it is difficult to weld a portion where the partition wall disposed inside the upper member, the inner wall in the vehicle width direction of the upper member, and the outer wall in the vehicle width direction of the damper base are overlapped.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to improve workability of connecting work between the upper member and the damper base while increasing the support rigidity of the damper base with respect to the upper member.

  In order to achieve the above object, according to the first aspect of the present invention, a front pillar lower having a closed cross section and a U-shaped cross section that opens to the outside in the vehicle width direction are provided to the front from the front pillar lower. An upper member extending to the front member, a lower member extending inward in the vehicle width direction from the front end of the upper member and connected to the front end of the front side frame, a damper base connected to the inner wall in the vehicle width direction of the upper member, A vehicle body structure including a reinforcing frame connected to an upper portion of the upper member and increasing in a vertical direction toward the front pillar lower, the reinforcing frame including an inner wall and an upper wall in a vehicle width direction It has an inverted L-shaped cross-section and forms an E-shaped cross-section in cooperation with the upper member, and the open portion of the E-shaped cross-section is closed with a back plate Is, the damper base upper wall body structure of a motor vehicle, characterized in that aligned with the upper wall of the upper member is proposed.

  According to the invention described in claim 2, in addition to the configuration of claim 1, the back plate includes an opening, and a flange is formed by bending an upper end of the upper wall of the upper member in the vehicle width direction upward. An automobile body structure is proposed in which openings of the back plate are overlapped and connected.

  According to the invention described in claim 3, in addition to the configuration of claim 1 or claim 2, the outer wall in the vehicle width direction in which the outer end in the vehicle width direction of the upper wall of the damper base is bent downward; A vehicle body structure is proposed in which the inner wall of the reinforcing frame in the vehicle width direction and the inner wall of the upper member in the vehicle width direction are connected in a stacked manner.

  According to the invention described in claim 4, in addition to the configuration of any one of claims 1 to 3, the inner wall in the vehicle width direction of the upper member is the inner wall in the vehicle width direction of the front pillar lower. A vehicle body structure is proposed which is connected to an outer surface in the vehicle width direction of the front extension portion.

  According to the fifth aspect of the present invention, in addition to the structure of any one of the first to fourth aspects, the rear portion of the lower wall of the upper member is formed by bending downward, and the rear side is the vehicle. A flange that inclines inward in the width direction, and a lower wall portion that is bent inward in the vehicle width direction by bending the lower end of the rear portion of the back plate inward in the vehicle width direction. The rear side inclines inward in the vehicle width direction. A vehicle body structure is proposed in which a flange is connected and a rear end of the back plate is connected to a front portion of the front pillar lower.

  According to the sixth aspect of the present invention, in addition to the configuration of any one of the first to fifth aspects, the front pillar lower is provided behind the upper wall or the lower wall of the upper member. A vehicle body structure is proposed in which a bulkhead aligned with the vehicle is arranged.

  According to the invention described in claim 7, in addition to the structure of any one of claims 1 to 6, a wheel arch is formed on the inner surface of the front pillar lower to which the rear end of the back plate is connected. A vehicle body structure is proposed in which stiffeners are arranged along the shape.

  According to the invention described in claim 8, in addition to the configuration of any one of claims 1 to 7, the upper wall of the reinforcing frame is disposed in front of the front pillar lower via the upper connecting member. A vehicle body structure for an automobile is proposed in which the upper member is connected to a wall and the upper wall of the upper member is connected to the front wall of the front pillar lower via a lower connecting member.

  According to the invention described in claim 9, in addition to the configuration of any one of claims 1 to 8, the upper wall of the reinforcing frame, the outer wall in the vehicle width direction of the front pillar lower, A vehicle body structure is proposed in which the lower end of the front pillar upper is connected by a cowl side panel.

  According to the invention described in claim 10, in addition to the structure of claim 9, the windshield lower support for connecting the left and right front pillar lowers in the vehicle width direction and the dash panel upper constitute the air intake passage of the air conditioner. And a reinforcing member that transmits a collision load of a frontal collision from the upper member to the front pillar upper, and the reinforcing member overlaps the upper wall of the damper base, the windshield lower support, A vehicle body structure is proposed which is connected to the cowl side panel.

  According to an eleventh aspect of the present invention, in addition to the configuration of the tenth aspect, a vehicle body structure for an automobile is proposed in which the dash panel upper includes a rainwater discharge hole below the reinforcing member. Is done.

  According to a twelfth aspect of the present invention, in addition to the configuration of any one of the first to eleventh aspects, the back plate includes a bead extending in the front-rear direction. A structure is proposed.

  According to the configuration of claim 1, a vehicle body includes a front pillar lower having a closed cross section, an upper member having a U-shaped cross section that opens outward in the vehicle width direction and extending forward from the front pillar lower, and an upper A lower member that extends from the front end of the member to the front end of the front side frame and extends inward in the vehicle width direction, a damper base that is connected to the inner wall of the upper member in the vehicle width direction, and a front portion that is connected to the upper portion of the upper member And a reinforcing frame whose vertical height increases toward the pillar lower.

  The reinforcing frame has an inverted L-shaped cross section composed of an inner wall and an upper wall in the vehicle width direction, forms an E-shaped cross section in cooperation with the upper member, and an opening portion of the E-shaped cross section is closed by a back plate. Since the upper wall of the damper base is aligned with the upper wall of the upper member, the impact load of the frontal collision input to the lower member can be transmitted and distributed to the front pillar lower via both the upper member and the reinforcing frame. The load input from the base can be transmitted to the upper wall of the upper member constituting the partition wall having a letter-shaped cross section composed of the upper member and the reinforcing frame, and can be firmly supported. In addition, since the overlapping portion of the damper base, the upper member, and the reinforcing frame is exposed from the open portion of the E-shaped cross section before the back plate is attached, the workability of the connecting work is improved.

  According to the second aspect of the present invention, the back plate includes an opening, and the opening of the back plate is overlapped and connected to a flange that is bent upward in the vehicle width direction outer end of the upper wall of the upper member. The operation of connecting the back plate superimposed on the flange from the outside in the vehicle width direction to the flange can be easily performed through the opening.

  According to the configuration of claim 3, the vehicle width direction outer wall of the damper base upper wall bent in the vehicle width direction outer end downward, the vehicle width direction inner wall of the reinforcing frame, and the vehicle width direction inner wall of the upper member Since it is connected in three layers, the upper wall of the damper base is firmly connected to the upper member and the reinforcing frame, and the load in the vehicle width direction input from the damper base is efficiently supported by the upper wall of the upper member. Can do.

  According to the fourth aspect of the present invention, the inner wall of the upper member in the vehicle width direction is connected to the outer surface in the vehicle width direction of the front extension of the inner wall of the front pillar lower, so that the upper member and the front pillar lower are connected. Not only is the strength and rigidity of the portion increased, but the back plate can be assembled to the upper member from the outside in the vehicle width direction, and the assemblability is improved.

  According to the fifth aspect of the present invention, the rear part of the lower wall of the upper member is bent downward and the rear side is inclined inward in the vehicle width direction, and the lower end of the rear part of the back plate is bent inward in the vehicle width direction. The lower wall is formed by bending the inner end in the vehicle width direction downward, and the rear side is connected to the flange that inclines in the vehicle width direction, and the rear end of the back plate is connected to the front part of the front pillar lower. Further, not only the strength and rigidity of the connecting portion of the upper member and the front pillar lower can be increased, but also the back plate can be assembled to the upper member from the outside in the vehicle width direction, and the assembling property is improved.

  Further, according to the configuration of the sixth aspect, since the bulk head aligned behind the upper wall or the lower wall of the upper member is disposed inside the front pillar lower, the collision load of the frontal collision is transferred from the upper member to the front pillar lower. Can be efficiently transmitted and distributed.

  According to the seventh aspect of the present invention, since the stiffener along the wheel arch shape is arranged on the inner surface of the front pillar lower to which the rear end of the back plate is connected, the collision load of the front collision is transferred from the upper member to the front pillar lower. It can be transmitted and distributed efficiently.

  According to the configuration of claim 8, the upper wall of the reinforcing frame is connected to the front wall of the front pillar lower via the upper connecting member, and the upper wall of the upper member is connected to the front pillar lower of the front pillar lower via the lower connecting member. Since it is connected to the front wall, the collision load of the frontal collision can be efficiently transmitted from the upper member to the front pillar lower and distributed.

  According to the ninth aspect of the present invention, the upper wall of the reinforcing frame, the outer wall in the vehicle width direction of the front pillar lower, and the lower end of the front pillar upper are connected by the cowl side panel. It is possible to efficiently transmit and disperse from the member to the front pillar upper.

  According to the configuration of claim 10, the windshield lower support and the dash panel upper that connect the left and right front pillar lowers in the vehicle width direction constitute the air intake passage of the air conditioner. It is equipped with a reinforcing member that transmits to the pillar upper, and the reinforcing member is connected to the dash panel upper that overlaps the upper wall of the damper base, the windshield lower support, and the cowl side panel. Can be more efficiently transmitted to the front pillar upper via the reinforcing member and dispersed.

  According to the configuration of claim 10, since the dash panel upper includes the rainwater discharge hole below the reinforcing member, the rainwater accumulated in the air intake passage of the air conditioner can be discharged from the discharge hole.

  According to the twelfth aspect of the invention, since the back plate includes the beads extending in the front-rear direction, the rigidity of the back plate is enhanced by the beads, and the collision load of the front collision is more efficiently transmitted from the upper member to the front pillar lower. can do.

The side view of the vehicle body left front part. FIG. FIG. 3 is a sectional view taken along line 3-3 in FIG. 1. 4A-4A and 4B-4B cross-sectional views of FIG. FIG. 5 is a sectional view taken along line 5-5 in FIG. FIG. 6 is a sectional view taken along line 6-6 in FIG. FIG. 7 is a sectional view taken along line 7-7 in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. In the present specification, the front-rear direction, the left-right direction (vehicle width direction), and the up-down direction are defined with reference to an occupant seated in a driver seat.

  As shown in FIGS. 1 and 2, a pair of left and right front pillar lowers 12, 12 stands up from the front ends of a pair of left and right side sills 11, 11 extending in the front-rear direction along both sides of the vehicle floor in the vehicle width direction. The upper ends of a pair of left and right front pillar uppers 13 and 13 extending rearward and upward from the upper ends of the left and right front pillar lowers 12 and 12 are connected to the front ends of the pair of left and right roof side rails 14 and 14. The left and right front pillar lowers 12 and 12 are connected by a dash panel lower 15 standing up from the floor, and the rear ends of the pair of left and right front side frames 16 and 16 are connected to the lower end of the dash panel lower 15. The rear ends of the left and right front side frames 16, 16 and the lower ends of the left and right front pillar lowers 12, 12 are connected by a pair of left and right outriggers 17, 17 extending in the vehicle width direction.

  A pair of left and right upper members 18, 18 extend forward from the upper ends of the left and right front pillar lowers 12, 12. The left and right upper members 18, 18 extend from the front end to the pair of left and right lower members 19, 19. To extend. The front ends of the left and right front side frames 16 and 16 and the front ends of the left and right lower members 19 and 19 are connected by a pair of left and right connecting members 20 and 20 adjacent to each other in the vehicle width direction. A pair of left and right bumper beam extensions 21, 21 connected to each other are connected by a bumper beam 22 extending in the vehicle width direction. Triangular reinforcing frames 23 and 23 are connected to the upper surfaces of the rear half of the left and right upper members 18 and 18 in a side view in which the height in the vertical direction gradually increases rearward. The left and right upper members 18 and 18 A pair of left and right back plates 24, 24 are connected to the outer surfaces of the reinforcing frames 23, 23 and the left and right lower members 19, 19 in the vehicle width direction. The inner surfaces in the vehicle width direction of the left and right upper members 18, 18 and the outer surfaces in the vehicle width direction of the left and right front side frames 16, 16 are connected by a pair of left and right damper bases 25, 25.

  As shown in FIGS. 2 to 4, the upper member 18 is a member having a U-shaped cross section that has a lower wall 18a, an inner wall 18b in the vehicle width direction, and an upper wall 18c and opens outward in the vehicle width direction. A flange 18d extending the outer end in the vehicle width direction of the first half, a flange 18e bent downward at the outer end in the vehicle width direction of the second half of the lower wall 18a, and an outer end in the vehicle width direction of the upper wall 18c bent upward. Two flanges 18f and 18g are provided. The rear flange 18e of the lower wall 18a is inclined toward the inner side in the vehicle width direction. The flange 18f on the front side of the upper wall 18c has a triangular shape, and the flange 18g on the rear side of the upper wall 18c has a trapezoidal shape.

  The reinforcing frame 23 is a member having an inverted L-shaped cross section having an inner wall 23a and an upper wall 23b in the vehicle width direction, and includes a flange 23c extending from the lower end of the inner wall 23a in the vehicle width direction and an outer end in the vehicle width direction of the upper wall 23b. And an extended flange 23d.

  The back plate 24 includes a flat plate-like main body 24a, a flange 24b in which the upper end of the main body 24a is bent outward in the vehicle width direction, a flange 24c in which the lower end of the first half of the main body 24a is bent outward in the vehicle width direction, A trapezoidal lower wall portion 24d (see FIGS. 3, 4B, and 6) in which the lower end of the latter half of the portion 24a is bent inward in the vehicle width direction, and three sides of the lower wall portion 24d bent downward. Two flanges 24e, 24f, and 24g are provided. The main body 24a includes three beads 24h... Extending in the front-rear direction, and two openings 24i and 24j formed between the upper bead 24h and the central bead 24h. The front opening 24i has a triangular shape slightly smaller than the front flange 18f of the upper wall 18c of the upper member 18, and the rear opening 24j is slightly smaller than the rear flange 18g of the upper wall 18c of the upper member 18. It is a small trapezoid.

  The lower member 19 includes a main body portion 19a having a U-shaped cross section that opens outward in the vehicle width direction, and a closed portion 19b that covers an opening in the first half of the main body portion 19a. The upper wall 25a supporting the upper end of the damper, the vehicle width direction outer wall 25b bent downward in the vehicle width direction of the upper wall 25a, and the vehicle width direction inner edge, front edge and rear edge of the upper wall 25a downward The vehicle width direction inner wall 25c is provided.

  On the upper part of the inner wall 18b in the vehicle width direction of the upper member 18, the lower part of the inner wall 23a in the vehicle width direction of the reinforcing frame 23 and. The damper base 25 is overlapped with the outer wall 25b in the vehicle width direction from the inner side in the vehicle width direction and spot-welded in a three-layered state. As a result, the upper member 18 and the reinforcing frame 23 form an E-shaped cross section that opens outward in the vehicle width direction. Then, the upper end flange 24b of the back plate 24 and the upper end flange 23d of the reinforcing frame 23 are overlapped and welded, and the lower end flange 24c of the back plate 24 and the lower end flange 18d of the upper member 18 are overlapped and welded. As a result, the openings of the upper member 18 and the reinforcing frame 23 are closed by the back plate 24, and the upper member 18, the reinforcing frame 23 and the back plate 24 form a day-shaped cross section. It is closed by the back plate 24.

  In this state, the front opening 18i and the rear opening 24j of the back plate 24 overlap the front flange 18f and the rear flange 18g of the upper wall 18c of the upper member 18, and these openings 24i, 24j are overlapped. MIG welding is performed at the periphery. Further, the inclined flange 18e on the rear side of the lower wall 18a of the upper member 18 and the inclined flange 24e on the front side of the three flanges 24e, 24f, 24g of the lower wall portion 24d of the back plate 24 are overlapped. By welding, the lower wall 18a of the upper member 18 and the lower wall portion 24d of the back plate 24 are continued in the same plane.

  As shown in FIGS. 5 and 6, the front pillar lower 12 includes a vehicle width direction inner wall 12a, a vehicle width direction outer wall 12b, a front wall 12c, and a rear wall 12d. The remaining two flanges 24f and 24g of the three flanges 24e, 24f and 24g of the lower wall portion 24d of the back plate 24 are welded to the front extension 12e and the front wall 12c which are formed by extending 12a forward.

  A bulkhead 26 extending in the front-rear direction is disposed inside the front pillar lower 12 constituting the closed section, and the front end of the bulkhead 26 faces the rear end of the upper wall 18c of the upper member 18 extending in the front-rear direction (see FIG. 2). Further, the front wall 12c of the front pillar lower 12 is curved in an arc shape along the wheel arch of the front wheel, and an arc-shaped stiffener 27 is connected to a corner portion of the front wall 12c and the outer wall 12b in the vehicle width direction. The upper end of the stiffener 27 is superimposed on the front end of the bulkhead 26.

  As shown in FIGS. 1 to 3, the front surface of the front wall 12 c of the front pillar lower 12 and the upper surface of the upper wall 23 b of the reinforcing frame 23 are connected by an upper connecting member 28, and the front wall 12 c of the front pillar lower 12 is connected. Are connected to the lower surface of the upper wall 18c of the upper member 18 by a lower connecting member 29.

  As shown in FIGS. 2, 3, 5, and 7, a dash panel upper 30 projects forward from an upper end of a dash panel lower 15 that connects the left and right front pillar lowers 12, 12. The end in the vehicle width direction is connected to the upper wall 25a of the damper base 25 and to the inner wall 23a in the vehicle width direction of the reinforcing frame 23. Further, a windshield lower support 31 that supports the lower end of the windshield is raised from the upper end of the dash panel lower 15 and has a closed cross section by the dash panel upper 30, the windshield lower support 31 and a resin cowl top (not shown). An air conditioning intake passage is formed.

  A cowl side panel 32 disposed between the reinforcing frame 23 and the front pillar upper 13 includes a triangular main body 32a, a flange 32b obtained by bending the lower end of the main body 32a outward in the vehicle width direction, and a main body 32a. And a flange 32d extending the rear end of the main body portion 32a. The lower flange 32b is connected to the upper wall 23b of the reinforcing frame 23, and The flange 32 c is connected to the upper wall of the front pillar upper 13, and the rear flange 32 d is connected to the vehicle width direction outer wall 12 b of the front pillar lower 12.

  The reinforcing member 33 disposed on the inner side in the vehicle width direction of the cowl side panel 32 includes a triangular main body portion 33a, a flange 33b obtained by bending the lower end of the main body portion 32a in the vehicle width direction, and the main body portion 32a. A flange 33c whose rear end is bent inward in the vehicle width direction and a flange 33d whose upper end of the main body 32a is bent outward in the vehicle width direction are provided. The lower flange 33b is connected to the upper surface of the dash panel upper 30. The rear flange 33c is connected to the front surface of the windshield lower support 31, and the upper flange 33d is connected to the upper surface of the upper flange 32c of the cowl side panel 32. The dash panel upper 30 includes discharge holes 30 a and 30 a for discharging rainwater at a position below the reinforcing member 33.

  Next, the operation of the embodiment of the present invention having the above configuration will be described.

  The reinforcing frame 23 superimposed on the upper part of the upper member 18 having a U-shaped cross section has an inverted L-shaped cross section whose height in the vertical direction increases toward the front pillar lower 12. The E-shaped cross section is formed by cooperation, the open portion of the E-shaped cross section is closed by the back plate 24, and the upper wall 25a of the damper base 25 is aligned with the upper wall 18c of the upper member 18. The input collision load of the frontal collision can be transmitted and distributed to the front pillar lower 12 and the front pillar upper 13 via both the upper member 18 and the reinforcing frame 23. In addition, the load input from the damper base 25 can be transmitted to the upper wall 18c of the upper member 18 that constitutes the partition wall having a letter-shaped cross section composed of the upper member 18 and the reinforcing frame 23, and can be firmly supported.

  Before the back plate 24 is attached to the upper member 18 and the reinforcing frame 23, the vehicle width direction outer wall 25b of the damper base 25, the vehicle width direction inner wall 18b of the upper member 18 and the reinforcing frame 23 from the open portion of the E-shaped cross section. Since the overlapped portion of the three-layered flange 23c is exposed, not only the workability when spot-welding them is improved, but the upper wall 25a is attached to the damper base 25 for both the upper member 18 and the reinforcing frame 23. The load in the vehicle width direction input from the damper base 25 can be efficiently supported. (See FIGS. 3 and 4).

  In addition, the back plate 24 includes openings 24i and 24j, and the openings 24i and 24j of the back plate 24 are overlapped with flanges 18f and 18g that are bent upward in the vehicle width direction of the upper wall 18c of the upper member 18. Since welding is performed, the welding operation of MIG welding can be easily performed through the openings 24i and 24j of the back plate 24 (see FIG. 4).

  Further, since the vehicle width direction inner wall 18b of the upper member 18 is connected to the vehicle width direction outer surface of the front extension 12e of the vehicle width direction inner wall 12a of the front pillar lower 12 (see FIG. 6), the upper member 18 and the front pillar lower In addition to improving the strength and rigidity of the twelve connecting portions, the back plate 24 can be assembled to the upper member 18 from the outer side in the vehicle width direction, and the assemblability is improved.

  Further, a flange 18e is formed by bending the rear portion of the lower wall 18a of the upper member 18 downward, and the rear side is inclined inward in the vehicle width direction, and a lower wall portion 24d in which the lower end of the rear portion of the back plate 24 is bent inward in the vehicle width direction. The flange 24e is formed by bending the inner end in the vehicle width direction downward, and the rear side is inclined inward in the vehicle width direction (see FIG. 4B). The flange 24g at the rear end of the back plate 24 is a front pillar. Since it is connected to the front wall 12c of the lower 12 (see FIG. 6), not only is the strength and rigidity of the connecting portion of the upper member 18 and the front pillar lower 12 increased, but the back plate 24 is connected to the upper member from the outside in the vehicle width direction. Assembling performance is improved.

  Further, since the back plate 24 includes beads 24h extending in the front-rear direction, the rigidity of the back plate 24 is enhanced by the beads 24h, and the collision load of the frontal collision is more efficiently transmitted from the upper member 18 to the front pillar lower 12. be able to.

  Further, since the bulkhead 26 aligned behind the upper wall 18c of the upper member 18 is disposed inside the front pillar lower 12 (see FIG. 5), the collision load of the frontal collision is transferred from the upper member 18 to the front pillar lower 12. It can be transmitted and distributed efficiently. In addition, since the stiffener 27 along the wheel arch shape is disposed on the inner surface of the front pillar lower 12 to which the rear end of the back plate 24 is connected (see FIG. 2), the collision load of the front collision is transferred from the upper member 18 to the front pillar lower 12. Can be efficiently transmitted and distributed. Further, the upper wall 23 b of the reinforcing frame 23 is connected to the front wall 12 c of the front pillar lower 12 via the upper connecting member 28, and the upper wall 18 c of the upper member 18 is connected to the front pillar lower 12 via the lower connecting member 29. Since it is connected to the front wall 12c (see FIG. 2), the collision load of the frontal collision can be efficiently transmitted from the upper member 18 to the front pillar lower 12 and dispersed.

  Further, since the upper wall 23b of the reinforcing frame 23, the inner wall 12a in the vehicle width direction of the front pillar lower 12, and the lower end of the front pillar upper 13 are connected by the cowl side panel 32 (see FIG. 2), the collision load of the frontal collision Can be efficiently transmitted from the upper member 18 to the front pillar lower 12 and the front pillar upper 13 for dispersion. In addition, the windshield lower support 31 and the dash panel upper 30 that connect the left and right front pillar lowers 12 and 12 in the vehicle width direction form an air-conditioning air intake passage, and the front pillar upper 13 The reinforcing member 33 is connected to the dash panel upper 30, the windshield lower support 31, and the cowl side panel 32 that overlap the upper wall 25a of the damper base 25 (see FIG. 3). ), The collision load of the frontal collision can be more efficiently transmitted from the upper member 18 to the front pillar upper 13 via the reinforcing member 33 and dispersed.

  Further, since the dash panel upper 30 is provided with rainwater discharge holes 30a and 30a below the reinforcing member 33, rainwater collected in the intake passage of the air conditioner can be discharged from the discharge holes 30a and 30a.

  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, the bulkhead 26 inside the front pillar lower 12 is arranged to align with the rear of the upper wall 18c of the upper member 18, but it is arranged to align with the rear of the lower wall 18a. May be.

12 Front pillar lower 12a Vehicle width direction inner wall 12c Front wall 12e Front extension 13 Front pillar upper 16 Front side frame 18 Upper member 18a Lower wall 18b Vehicle width direction inner wall 18c Upper wall 18e Flange 18f Flange 18g Flange 19 Lower member 23 Reinforcement frame 23a Vehicle width direction inner wall 23b Upper wall 24 Back plate 24d Lower wall portion 24e Flange 24h Bead 24i Open portion 24j Open portion 25 Damper base 25a Upper wall 25b Vehicle width direction outer wall 26 Bulkhead 27 Stiffener 28 Upper connecting member 29 Lower connecting member 30 Dash Panel upper 30a Discharge port 31 Windshield lower support 32 Cowl side panel 33 Reinforcing member

Claims (12)

A front pillar lower (12) having a closed cross section, an upper member (18) having a U-shaped cross section that opens outward in the vehicle width direction and extending forward from the front pillar lower (12), and the upper member (18 ) From the front end to the front lower side and the vehicle width direction inner side and connected to the front end of the front side frame (16) and to the vehicle width direction inner wall (18b) of the upper member (18). The vehicle body structure includes a damper base (25) and a reinforcing frame (23) that is connected to an upper portion of the upper member (18) and increases in height in the vertical direction toward the front pillar lower (12). And
The reinforcing frame (23) has an inverted L-shaped cross section composed of an inner wall (23a) and an upper wall (23b) in the vehicle width direction, and forms an E-shaped cross section in cooperation with the upper member (18). The open portion of the E-shaped cross section is closed by a back plate (24), and the upper wall (25a) of the damper base (25) is aligned with the upper wall (18c) of the upper member (18). Car body structure.   The back plate (24) has openings (24i, 24j), and the back plate is attached to a flange (18f, 18g) obtained by bending the outer end in the vehicle width direction of the upper wall (18c) of the upper member (18) upward. The vehicle body structure according to claim 1, wherein the openings (24i, 24j) of (24) are overlapped and connected.   A vehicle width direction outer wall (25b) obtained by bending an upper end (25a) of the upper wall (25a) of the damper base (25) downward, a vehicle width direction inner wall (23a) of the reinforcing frame (23), and the upper The vehicle body structure of an automobile according to claim 1 or 2, wherein three members of the member (18) and the inner wall (18b) in the vehicle width direction are connected in a stacked manner.   A vehicle width direction inner wall (18b) of the upper member (18) is connected to a vehicle width direction outer surface of a front extension (12e) of a vehicle width direction inner wall (12a) of the front pillar lower (12). The vehicle body structure according to any one of claims 1 to 3.   A flange (18e) formed by bending a rear portion of the lower wall (18a) of the upper member (18) downward and having a rear side inclined inward in the vehicle width direction, and a lower end of the rear portion of the back plate (24) The lower wall portion (24d) bent inward in the direction is formed by bending the inner end in the vehicle width direction downward, and is connected to a flange (24e) whose rear side is inclined inward in the vehicle width direction. The vehicle body structure according to any one of claims 1 to 4, wherein a rear end is connected to a front portion of the front pillar lower (12).   The bulkhead (26) aligned behind the upper wall (18c) or the lower wall (18a) of the upper member (18) is disposed inside the front pillar lower (12). The vehicle body structure according to any one of claims 1 to 5.   The stiffener (27) along the wheel arch shape is disposed on the inner surface of the front pillar lower (12) to which the rear end of the back plate (24) is connected. The vehicle body structure according to any one of the preceding claims.   The upper wall (23b) of the reinforcing frame (23) is connected to the front wall (12c) of the front pillar lower (12) via the upper connecting member (28), and the upper wall of the upper member (18). 8. (18c) is connected to the front wall (12c) of the said front pillar lower (12) via a lower connection member (29), The one of Claims 1-7 characterized by the above-mentioned. Car body structure.   An upper wall (23b) of the reinforcing frame (23), an outer wall (12b) in the vehicle width direction of the front pillar lower (12), and a lower end of the front pillar upper (13) are connected by a cowl side panel (32). The vehicle body structure according to any one of claims 1 to 8, wherein the vehicle body structure is a vehicle.   The windshield lower support (31) that connects the left and right front pillar lowers (12) in the vehicle width direction and the dash panel upper (30) constitute an air intake passage of the air conditioner, and the collision load of the frontal collision is reduced by the upper member (18 ) To the front pillar upper (13), and the reinforcing member (33) includes the dash panel upper (30) overlapping the upper wall (25a) of the damper base (25). The vehicle body structure according to claim 9, wherein the vehicle body structure is connected to the windshield lower support (31) and the cowl side panel (32).   11. The vehicle body structure according to claim 10, wherein the dash panel upper (30) includes a rainwater discharge hole (30a) below the reinforcing member (33). The vehicle body structure according to any one of claims 1 to 11, wherein the back plate (24) includes a bead (24h) extending in the front-rear direction.

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