WO2015037444A1 - Structure de carrosserie d'automobile - Google Patents

Structure de carrosserie d'automobile Download PDF

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Publication number
WO2015037444A1
WO2015037444A1 PCT/JP2014/072437 JP2014072437W WO2015037444A1 WO 2015037444 A1 WO2015037444 A1 WO 2015037444A1 JP 2014072437 W JP2014072437 W JP 2014072437W WO 2015037444 A1 WO2015037444 A1 WO 2015037444A1
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WIPO (PCT)
Prior art keywords
cross member
body structure
vehicle body
width direction
vehicle width
Prior art date
Application number
PCT/JP2014/072437
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English (en)
Japanese (ja)
Inventor
庸一郎 鈴木
佳克 太田
豊也 金口
Original Assignee
本田技研工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 本田技研工業株式会社 filed Critical 本田技研工業株式会社
Priority to JP2015536521A priority Critical patent/JP6074825B2/ja
Publication of WO2015037444A1 publication Critical patent/WO2015037444A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units
    • B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
    • B62D25/2036—Floors or bottom sub-units in connection with other superstructure subunits the subunits being side panels, sills or pillars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/087—Luggage compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/20—Floors or bottom sub-units
    • B62D25/2009—Floors or bottom sub-units in connection with other superstructure subunits
    • B62D25/2027—Floors or bottom sub-units in connection with other superstructure subunits the subunits being rear structures

Definitions

  • the present invention relates to a vehicle body structure of an automobile in which a rear end of a side sill arranged in the front and rear direction and a front end of a rear side frame arranged in the front and rear direction are connected by a kickup portion curved from the lower front to the upper rear.
  • the rear end of the side sill made of aluminum, the front end of the rear side frame, and the outer end in the vehicle width direction of the middle cross member are connected by a joint member made of cast aluminum.
  • Japanese Patent Laid-Open Publication No. H10-324147 discloses that a rectangular frame-shaped rear sub-frame for supporting a suspension device is supported at an intersection of a longitudinal frame and a lateral frame of a vehicle body via an iron casting joint member.
  • the cast iron joint member described in Patent Document 2 is for supporting the rear sub-frame at the intersection of the longitudinal frame and the transverse frame of the vehicle body, and the absorption of the collision load of the rear collision is considered. Absent.
  • connection portion When a collision load of a rear collision is input to the rear end of the rear side frame disposed in the front-rear direction, the connection portion is deformed if the front end of the rear side frame is not firmly connected to the rear end of the side sill. Is inclined from the front and rear direction, so that it is difficult to crush in the axial direction due to a collision load, which may reduce the impact absorbing performance.
  • the present invention has been made in view of the above-described circumstances, and an object thereof is to reinforce a kickup portion connecting a side sill and a rear side frame to efficiently absorb a collision load of a rear collision.
  • a kickup portion which curves the rear end of the side sill disposed in the front-rear direction and the front end of the rear side frame disposed in the front-rear direction
  • the iron casting joint in addition to the first feature, in the automobile according to the second feature, includes a reinforcing rib connecting the suspension arm support and the cross member support.
  • a car body structure is proposed.
  • the kickup portion is formed into a hollow closed cross section, and an L-shaped cross section portion of the suspension arm support portion is a lower wall of the kickup portion.
  • a vehicle body structure of an automobile having a third feature of being connected to a side wall on the inner side in the vehicle width direction.
  • the middle cross member having a hollow closed cross section is held between the cross member support and a bracket connected thereto.
  • a vehicle body structure of an automobile is proposed.
  • the pair of left and right kick-up portions are connected to both ends of the floor cross member in the vehicle width direction behind the middle cross member.
  • the middle cross member and the floor cross member are connected by a pair of left and right connecting members extending in the front and rear direction, and the floor cross member and the pair of left and right rear side frames are connected obliquely via a pair of left and right bracing members.
  • a fifth aspect of the present invention a vehicle body structure of an automobile is proposed.
  • the sixth feature is that the middle cross member is provided with a recess extending in the vehicle width direction on the surface facing the upper front.
  • a car body structure is proposed.
  • the lower end of a C pillar suspended from a roof side rail is connected to the rear of the kickup portion
  • a horizontal member extending rearward from the middle portion is connected to the vertically middle portion of the D pillar located behind the C pillar, and the horizontal member and the rear side frame are connected by a rear wheel house supporting the upper end of the suspension damper
  • the rear wheel house is provided with a ridge extending from the horizontal member to the rear of the kickup portion.
  • the C-pillar is bent in a "V" shape at a bending portion along the rear edge of the rear door opening, and the front end of the horizontal member is
  • a vehicle body structure of an automobile characterized in that the vehicle body is connected to a bend of the C-pillar.
  • a vehicle body structure of an automobile according to a ninth feature, wherein a bending portion of the C pillar and a front end of the rear side frame are connected by a branch frame. Ru.
  • the rear wheel house includes a damper support wall extending in the horizontal direction to support the upper end of the suspension damper, the rear wheel house
  • a damper support wall extending in the horizontal direction to support the upper end of the suspension damper, the rear wheel house
  • the damper support wall has a smooth curved surface shape continuous from the outer end in the vehicle width direction of the damper support wall to the horizontal member.
  • a rear fender panel is provided covering the outer side in the vehicle width direction of the rear wheel house, and an annular member formed in the rear fender panel so as to surround a fuel supply port.
  • a car body structure of an automobile characterized in that the projection is faced to the upper end of the raised portion of the rear wheel house.
  • the left and right ones of which the upper end is located on the opposite side in the vehicle width direction of one of the left and right rear wheel houses directly connected to the horizontal member According to a twelfth aspect of the present invention, there is proposed an automobile body structure according to a twelfth aspect of the present invention, wherein the upper end of the rear wheel house is connected to the horizontal member through a reinforcing frame.
  • a roof connecting between upper ends of the pair of left and right C pillars and upper ends of the pair of left and right pillars in the vehicle width direction A vehicle body structure of a motor vehicle is proposed, which is characterized in that a central portion in a vehicle width direction of an arch is connected in a V shape by a pair of right and left brace members.
  • the fourth cross member 19 of the embodiment corresponds to the middle cross member of the present invention
  • the fifth cross member 20 of the embodiment corresponds to the floor cross member of the present invention
  • the third roof arch of the embodiment 37 corresponds to the roof arch of the present invention.
  • the rear end of the side sill arranged in the front and rear direction and the front end of the rear side frame arranged in the front and rear direction are connected by the kickup portion curved from the front lower side to the rear upper side Therefore, when the collision load of the rear surface collision is input to the rear side frame, the kick-up part is bent and deformed so that the rear end of the rear side frame is lifted, and it is difficult to crush the rear side frame in the axial direction to absorb the collision load Become.
  • the iron casting joint having the suspension arm supporting portion for supporting the suspension arm and the cross member supporting portion for supporting the end of the middle cross member extending in the vehicle width direction is connected to the kickup portion, strong iron casting Reinforcement of the kick-up portion by the joint suppresses bending deformation of the kick-up portion so that the rear end of the rear side frame is lifted, and crushes the rear side frame in the axial direction to efficiently absorb the collision load.
  • the cast iron joint since the cast iron joint includes reinforcing ribs for connecting the suspension arm supporting portion and the cross member supporting portion, the connecting portion between the suspension arm supporting portion and the cross member supporting portion by the reinforcing rib to increase the support rigidity of the suspension arm.
  • the kickup portion is formed into a hollow closed cross section, and the L-shaped cross section of the suspension arm support portion is connected to the lower wall of the kickup portion and the inner side wall in the vehicle width direction. Therefore, it is possible to effectively reinforce the kick-up portion while reducing the weight by making the iron casting joint thin and effectively transmitting the collision load of the rear collision from the rear side frame to the side sill.
  • the middle cross member having a hollow closed cross section is sandwiched between the cross member support and the bracket connected thereto, the assemblability of the middle cross member to the iron casting joint is improved. Not only that, but the middle cross member can be firmly connected to the kickup portion to increase the torsional rigidity of the vehicle body.
  • the left and right kick-up portions are connected to both ends of the floor cross member in the vehicle width direction behind the middle cross member, and the middle cross member and the floor cross member extend in the front and rear direction
  • the floor cross member and the pair of left and right rear side frames are diagonally connected via the pair of left and right brace members, so that the kickup portion connecting the side sill and the rear side frame is effectively reinforced.
  • the torsional rigidity of the vehicle body can be enhanced.
  • the middle cross member is provided with a recess extending in the vehicle width direction on the surface facing the front upper side, so that not only the rigidity of the middle cross member is enhanced by the recess but When the rear seat is disposed in the room, the position of the rear seat can be moved downward or backward by facing the lower portion of the rear seat to the recess of the middle cross member, and the cabin space can be enlarged.
  • the lower end of the C-pillar hanging from the roof side rail is connected to the rear end of the kickup portion
  • the horizontal member extending rearward from the vertical middle portion of the C-pillar is the C-pillar Connected to the vertical middle part of the D-pillar located at the rear of the vehicle, connecting the horizontal member and the rear side frame with the rear wheel house supporting the upper end of the suspension damper, from the horizontal member to the rear of the kickup part Since the rear end of the rear side frame is lifted due to the collision load, the upward load is transmitted to the roof side rail through the C-pillar, and the rear wheel house ridge and By transmitting to the D-pillar via the horizontal member, lifting of the rear end of the rear side frame is suppressed, The Ya side frame is crushed in the axial direction can be absorbed collision load efficiently to.
  • the C-pillar is bent in a "V" shape at the bending portion along the rear edge of the rear door opening, and the front end of the horizontal member is the bending portion of the C-pillar.
  • the branch frame is stretched further reliably preventing the upward tilt of the rear side frame. be able to.
  • the rear wheel house is provided with a damper support wall extending in the horizontal direction to support the upper end of the suspension damper, and the rear wheel house is a horizontal member from the vehicle width direction outer end of the damper support wall. Since it is continuous in a gentle curved surface shape, the upward load inputted from the upper end of the suspension damper to the damper support wall is efficiently transmitted to the horizontal member via the smooth curved surface rear wheel house.
  • a rear fender panel which covers the outer side in the vehicle width direction of the rear wheel house, and an annular protrusion formed on the rear fender panel is provided to surround the fuel supply port. Since the upper end of the protuberance of the vehicle is faced, the upward load input from the suspension damper can be transmitted to the horizontal member through both members of the rear wheel house and the rear fender panel.
  • the upper end of one of the left and right rear wheel houses is directly connected to the horizontal member, so that the upward load from the rear side frame is transmitted to the horizontal member by the rear wheel house itself
  • the upward load can not be transmitted to the horizontal members.
  • the upper ends of the other left and right rear wheel houses are connected to the horizontal members via the reinforcing frame, the upward load can be transmitted to the horizontal members.
  • the upper end of the pair of left and right C pillars and the central portion in the vehicle width direction of the roof arch connecting between the upper ends of the pair of left and right D pillars in the vehicle width direction Since the members are connected in a V-shape, the upward load input from the suspension damper can be efficiently transmitted from the C-pillar to the roof side rail and absorbed.
  • FIG. 1 is a partial perspective view of a rear portion of a vehicle body.
  • First Embodiment FIG. 2 is a view in the direction of arrows in FIG.
  • First Embodiment FIG. 3 is a view in the direction of arrows in FIG. (First Embodiment).
  • FIG. 4 is an enlarged sectional view taken along line 4-4 of FIG.
  • First Embodiment FIG. 5 is a view in the direction of arrow 5 in FIG.
  • First Embodiment 6 is a cross-sectional view taken along line 6A-6A and line 6B-6B of FIG.
  • First Embodiment FIG. 7 is an exploded perspective view of the periphery of the kickup portion.
  • the front-rear direction, the left-right direction (vehicle width direction), and the vertical direction are defined based on the occupant seated in the driver's seat.
  • the vehicle body frame at the rear of the vehicle is connected to the rear ends of a pair of left and right side sills 13, 13 arranged in the front and rear direction outside the vehicle width direction and the rear ends of the left and right side sills 13, 13. And a pair of left and right rear side frames 14 and 14 extending rearward.
  • the rear ends of the left and right side sills 13, 13 are connected by a fourth cross member 19 extending in the vehicle width direction, and the front ends of the left and right rear side frames 14, 14 are connected by a fifth cross member 20 extending in the vehicle width direction.
  • the rear ends of the left and right rear side frames 14 are connected by a sixth cross member 21 extending in the vehicle width direction.
  • a pair of left and right C pillars (rear pillars) 26, 26 stand upright from the rear ends of the left and right side sills 13, 13, and a pair of left and right D pillars 27, 27 stand from the rear ends of the left and right rear side frames 14, 14.
  • a roof side rail 33 extends rearward from the rear end of the A pillar upper (not shown), and the distance between the rear ends of the left and right roof side rails 33, 33 and the upper end of the left and right D pillars 27, 27 is in the vehicle width direction. It connects by the 3rd roof arch 37 which extends to.
  • Rear wheel houses 38L and 38R are erected from the left and right rear side frames 14 and 14, respectively, and the vehicle width direction outer sides of the rear wheel houses 38L and 38R are covered with rear fender panels 39L and 39R, respectively.
  • the rear side frame 14 is formed by bending a rectangular steel plate 14 'into a cross-sectional "8" shape or a cross-sectional "day” shape by roll forming. More specifically, the cross section of the steel plate 14 'is directed from the one end p1 to the other end p2 with a first side s1, a first corner a1, a second side s2, a second corner a2, and a third side s3.
  • the fourth corner a4 After bending the third corner a3 and the fourth side s4 three times in the same direction by approximately 90 ° in the same direction, the fourth corner a4, the fifth side s5, the fifth corner a5, the sixth side s6, the fourth corner In the order of the six corners a6 and the seventh side s7, it is bent three times in the opposite direction by about 90 ° three times, one end p1 is welded w1 to the fourth corner a4, and the other end p2 is welded w2 to the third corner a3 .
  • the first side s1 and the fifth side s5 linearly connected and the third side s3 and the seventh side s7 linearly connected are the same length and are parallel to each other, and the second side s2 and the fourth side
  • the s4 and the sixth side s6 have the same length and are parallel to each other. Therefore, the cross-sectional shape of the rear side frame 14 is point-symmetrical (2-fold symmetry) with respect to the axis L.
  • the rear side frame 14 is disposed such that the second side s2, the fourth side s4, and the sixth side s6 face in the vertical direction.
  • the rear side frame 14 is in a state in which the one shown in FIG. 4 (A) is turned over by 90 °, that is, the second side s2, the fourth side s4, and the sixth side s6 are horizontal postures. It can be arranged as The fourth side s4 in FIGS. 4A and 4B serves as a partition that connects a pair of faces facing toward the inside of the rectangular cross section of the rear side frame 14.
  • the side sill 13 is formed into a closed cross section by joining the side sill inner 13 A and the side sill outer 13 B, and the rear end of the side sill 13 and the front end of the rear side frame 14 have a kickup portion 41. It is connected with.
  • the front end of the rear side frame 14 is biased upward and inward in the vehicle width direction with respect to the rear end of the side sill 13, and the kickup portion 41 is a first member 41A having a U-shaped cross section located inside in the vehicle width direction.
  • a second member 41B having a U-shaped cross section located at the front in the lateral direction of the vehicle and a third member 41C having a plate-like shape located at the rear in the lateral direction of the vehicle. .
  • the outer end of the fourth cross member 19 in the vehicle width direction is connected to the first member 41A of the kickup portion 41 via an iron casting joint 42 which is a cast member made of iron.
  • the iron casting joint 42 integrally includes a suspension arm support portion 42 a supporting the front end of the suspension arm 43 of the torsion beam type suspension and a cross member support portion 42 b supporting the outer end in the vehicle width direction of the fourth cross member 19.
  • the suspension arm support portion 42a includes a vertical wall a, a horizontal wall b, a vertical wall c and a horizontal wall d which are continuous in two steps.
  • the extension wall e extends rearward and downward from the rear end of the vertical wall c, and as a result, the rear end of the suspension arm support 42a is opened in a downward direction by the vertical wall a, the lateral wall b and the extension wall e.
  • the bolt hole f is formed in the vertical wall a, and a nut g facing the bolt hole f is welded to the inner surface in the vehicle width direction of the extension wall e.
  • the cross member support portion 42b includes a plate-like cross member support wall h extending in a plate shape inward in the vehicle width direction from the vertical wall c and the horizontal wall d of the suspension arm support portion 42a.
  • the cross member support wall h and the vertical wall c are connected by three reinforcing ribs i which extend in the vehicle width direction.
  • a bracket 45 is connected to the front surface of the cross member support wall h and the inner surface in the vehicle width direction of the first member 41A, and the closed cross section formed between the cross member support wall h and the bracket 45 is connected to the fourth cross member 19
  • the vehicle width direction outer end is fitted and welded.
  • the fourth cross member 19 includes a recess 19a extending in the vehicle width direction, and the surface of the fourth cross member 19 facing the vehicle compartment is recessed rearward and downward by the recess 19a.
  • an L-shaped cross section including the horizontal wall b and the vertical wall c of the suspension arm support portion 42a of the iron casting joint 42 is welded to the lower wall 41a of the first member 41A of the kickup portion 41 and the inner side wall 41b.
  • the iron casting joint 42 is connected to the kickup portion 41.
  • a fifth cross member is disposed parallel to the rear of the fourth cross member 19 between the rear portions of the first members 41A and 41A of the left and right kickup portions 41 and 41. 20 are connected.
  • the rear surface of the fourth cross member 19 and the front surface of the fifth cross member 20 are connected by a pair of left and right connecting members 46, 46 extending in the front-rear direction, and the fifth cross member 20 corresponding to the rear end position of the connecting members 46, 46.
  • the rear surface is diagonally connected to the inner surface in the vehicle width direction of the left and right rear side frames 14, 14 by a pair of left and right brace members 47, 47.
  • the lower surfaces of the fourth cross member 19, the fifth cross member 20, the left and right kickup portions 41, 41, and the left and right rear side frames 14, 14 are connected by a rear floor panel 48 having a spare tire storage recess 48a. Therefore, the triangular frame 49 surrounded by the fifth cross member 20, the rear side frame 14 and the brace member 47 is closed by the rear floor panel 48 and reinforced.
  • the lower end of the C pillar 26 is connected to the upper surface of the kickup portion 41 in which the vehicle width direction outer ends of the fourth cross member 19 are connected.
  • the C-pillar 26 is disposed along the rear edge of the door opening of the rear door, and the vertically middle portion thereof is bent in a "V" shape by being biased rearward, and extends rearward from the bent portion
  • the rear end of the horizontal member 50 is connected to the vertically middle portion of the D-pillar 27.
  • a branch frame 51 extends downward from a bent portion of the C pillar 26, that is, a connection portion with the horizontal member 50, and the lower end of the branch frame 51 is connected to the rear end upper surface of the kickup portion 41.
  • the lower ends of the left and right rear wheel houses 38L, 38R obtained by pressing a steel plate are connected to the outer surfaces of the left and right rear side frames 14, 14 in the vehicle width direction.
  • the shape of the left rear wheel house 38L is different from the shape of the right rear wheel house 38R. That is, a damper support wall 38a for supporting the upper end of a damper (not shown) of the suspension device is formed substantially horizontally at the vertical middle portion of the left rear wheel house 38L, and the rear wheel house 38L is the damper support wall 38a. It extends upward and is connected to the horizontal member 50 while gently curving from the outer end in the vehicle width direction. Further, at a position adjacent to the front of the damper support wall 38a, a raised portion 38b extending in the vertical direction and projecting inward in the vehicle width direction is formed.
  • a rear fender panel 39L is connected to an outer surface of the rear wheel house 38L in the vehicle width direction by pressing a steel plate and curving outwardly in the vehicle width direction.
  • a circular projection 39a (see FIG. 2) surrounding the fuel tank inlet (not shown) is formed, and the projection 39a faces the projection 38b of the rear wheel house 38L.
  • the upper portion of the right rear wheel house 38R is cut off in the vicinity of the damper support wall 38a, and the right rear wheel house 38R does not have a raised portion 38b corresponding to the raised portion 38b of the left rear wheel house 38L. Further, a reinforcing frame 52 extending upward from the upper end of the right rear wheel house 38R is connected to the rear end of the horizontal member 50. Further, the rear portions of the left and right roof side rails 33, 33 and the central portion in the vehicle width direction of the third roof arch 37 are connected by a pair of left and right bracing members 53, 53 expanding in a V shape toward the front. Be done.
  • the rear side frame 14 of the present embodiment has a partition connecting a pair of faces facing inward, and with respect to the axis L Since the cross-sectional shape is symmetrical with respect to the point, it is possible to prevent the rear side frame 14 from bending as much as possible due to the collision load, and the rear side frame 14 can be crushed over a long stroke to efficiently absorb the collision load.
  • the rear side frame 14 of the present embodiment is manufactured by bending a steel plate 14 'by roll forming and welding w1 and w2 at one end p1 and the other end p2, so a rear side frame formed of a light alloy extruded material Compared with low cost, it has excellent shock absorption performance.
  • the front ends of the pair of left and right rear side frames 14, 14 are connected by the fifth cross member 20 extending in the vehicle width direction, and the rear side frames 14, 14 and the fifth cross member 20 are connected by the bridging members 47, 47 to form a triangular shape.
  • the rear floor panel 48 closes the frame portions 49 and 49.
  • the C pillar 26 since the lower end of the C pillar 26 hanging from the roof side rail 33 is connected to the rear of the kickup portion 41, the C pillar 26 is stretched to suppress upward bending of the rear side frame 14. By doing this, crushing of the rear side frame 14 in the direction of the axis L can be promoted.
  • a horizontal member 50 extending rearward from the vertical middle portion of the C pillar 26 is connected to the vertical middle portion of the D pillar 27, and a horizontal member 50 on the left side in the vehicle width direction and the rear side frame 14 are connected by a rear wheel house 38L. Since the rear wheel house 38L is provided with the ridge 38b (see FIGS. 1 and 2) extending from the horizontal member 50 to the rear of the kickup portion 41, the rear side frame is formed by the ridge 38b of the rear wheel house 38L and the horizontal member 50. The upward bending of 14 can be further reliably suppressed.
  • the vehicle body of the present embodiment is a space frame in which pipes are connected, in the rear wheel house portion where the pipes are difficult to arrange in space, a raised portion 38b is formed in the rear wheel house 38L of steel plate to achieve high strength. By doing this, the upward bending of the rear side frame 14 can be further reliably suppressed.
  • the C-pillar 26 is bent in a "V" shape at the bending portion along the rear edge of the rear door opening, and the front end of the horizontal member 50 is connected to the bending portion of the C-pillar 26,
  • the bending of the bent portion of the C-pillar 26 can be prevented, and the inclination of the rear side frame 14 upward due to the collision load of the rear collision can be prevented while minimizing the cross section of the C-pillar 26.
  • the branch frame 51 stretches upwards of the rear side frame 14 It is possible to suppress this more reliably.
  • a kickup portion 41 connecting the side sill 13 and the rear side frame 14 is a suspension arm support portion 42a for supporting the suspension arm 43 and a cross member support portion 42b for supporting an end of the fourth cross member 19 extending in the vehicle width direction.
  • the rear side frame 14 is restrained from bending deformation so that the rear end of the rear side frame 14 is lifted by the collision load of the rear surface collision, and the rear side frame 14 is directed in the direction of the axis L
  • the fourth cross member 19 can be firmly connected to the kickup portion 41 to enhance the torsional rigidity of the vehicle body.
  • the iron casting joint 42 includes the reinforcement ribs i (see FIGS. 5 to 7) connecting the suspension arm support portions 42a and the cross member support portions 42b, the suspension arm support portions 42a and the cross are reinforced by the reinforcement ribs i.
  • the connection portion of the member support portion 42b can be reinforced to increase the support rigidity of the suspension arm 43.
  • the L-shaped cross section (horizontal wall b and vertical wall c shown in FIG. 7) is formed on the lower wall 41a of the first member 41A of the kickup portion 41 and the side wall 41b on the inner side in the vehicle width direction.
  • the kick-up portion 41 is effectively reinforced while reducing the weight by making the iron casting joint 42 thin, and the collision load of the rear surface collision from the rear side frame 14 to the side sill 13 efficiently. It can be transmitted.
  • the fourth cross member 19 of the hollow closed cross section is sandwiched between the cross member support portion 42b of the iron casting joint 42 and the bracket 45 connected thereto, the assemblability of the fourth cross member 19 with the iron casting joint 42 is In addition to the improvement, the fourth cross member 19 can be firmly connected to the kickup portion 41 to enhance the torsional rigidity of the vehicle body.
  • the left and right kickup portions 41, 41 are connected to both ends in the vehicle width direction of the fifth cross member 20 at the rear of the fourth cross member 19, and the fourth cross member 19 and the fifth cross member 20 extend in the front and rear direction
  • the fifth cross member 20 and the left and right rear side frames 14, 14 are diagonally connected via the left and right brace members 47, 47, so that the side sills 13, 13 and the rear side frame 14, It is possible to effectively reinforce the kick-up portions 41, 41 connecting the fourteen to increase the torsional rigidity of the vehicle body.
  • the fourth cross member 19 is provided with the recess 19a (see FIG. 7) extending in the vehicle width direction on the surface facing the upper front, the rigidity of the fourth cross member 19 is enhanced by the recess 19a.
  • the left rear wheel house 38L includes the damper support wall 38a extending in the horizontal direction to support the upper end of the suspension damper, an upward load from the suspension damper acts on the damper support wall 38a.
  • the rear wheel house 38L continues in a gentle curved shape from the outer end of the damper support wall 38a in the vehicle width direction to the horizontal member 50, the upward load input from the upper end of the suspension damper to the damper support wall 38a is gentle. Is efficiently transmitted to the horizontal member 50 through the rear wheel house 38L having a curved surface shape.
  • the rear fender panel 39L covering the outer side of the left rear wheel house 38L in the vehicle width direction is provided with an annular projecting portion 39a (see FIG. 2) surrounding the fuel supply port, and the projecting portion 39a is the rear wheel house 38L. Since the upper end of the raised portion 38b is faced, the upward load input from the suspension damper can be transmitted to the horizontal member 50 through both the rear wheel house 38L and the rear fender panel 39L.
  • the upper end of the right rear wheel house 38R has not reached the position of the horizontal member 50, but the upper end of the rear wheel house 38R and the horizontal member 50 are connected by the reinforcing frame 52 (see FIGS. 1 and 3)
  • An upward load input from the rear side frame 14 and an upward load input from the suspension damper to the damper support wall 38 a can be transmitted to the horizontal member 50 via the reinforcing frame 52.
  • the left and right brace members 53, 53 are connected to the center of the third roof arch 37, which connects the upper ends of the left and right C pillars 26, 26 and the upper ends of the left and right D pillars 27, 27 in the vehicle width direction. Since it is connected in a V shape (see FIG. 1), the upward load input from the suspension damper is efficiently transmitted and absorbed from the C pillars 26, 26 to the roof side rails 33, 33 and the third roof arch 37. be able to.
  • the middle cross member of the present invention is not limited to the fourth cross member 19 of the embodiment, and the floor cross member of the present invention is not limited to the fifth cross member 20 of the embodiment.
  • the roof arch of the invention is not limited to the third roof arch 37 of the embodiment.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

Dans la présente invention, dans une structure de carrosserie d'automobile, une extrémité arrière d'un seuil latéral (13) et une extrémité avant d'un cadre latéral arrière (14) sont reliés par une partie relevable (41) s'incurvant d'une partie inférieure avant à une partie supérieure arrière, et un joint coulé en fonte (42) comprenant une partie de support de bras de suspension (42a) soutenant un bras de suspension (43) et une partie de support de membre de traverse (42b) soutenant une partie d'extrémité d'un membre de traverse intermédiaire (19) s'étendant dans une direction en largeur du véhicule est relié à la partie relevable (41). De cette façon, la déformation par cintrage de la partie relevable (42) est supprimée de telle sorte qu'une extrémité arrière du cadre latéral arrière (14) est soulevée par une charge de collision découlant d'une collision arrière. Non seulement la charge de collision peut être efficacement absorbée par écrasement du cadre latéral arrière (14) dans une direction d'axe (L), mais la rigidité de torsion de la carrosserie de véhicule peut également être augmentée par une liaison solide du membre de traverse intermédiaire (19) à la partie relevable (41).
PCT/JP2014/072437 2013-09-13 2014-08-27 Structure de carrosserie d'automobile WO2015037444A1 (fr)

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JP2018075894A (ja) * 2016-11-08 2018-05-17 日産自動車株式会社 車体後部構造
KR20180074285A (ko) * 2016-12-23 2018-07-03 주식회사 포스코 차량용 크로스 멤버
FR3078049A1 (fr) * 2018-02-22 2019-08-23 Psa Automobiles Sa Procede d'assemblage entre eux d'elements de carrosserie composant une doublure d'aile laterale arriere d'un vehicule automobile.
EP3566931A1 (fr) * 2018-05-10 2019-11-13 Mazda Motor Corporation Structure de carrosserie de véhicule et véhicule
EP3587222A1 (fr) * 2018-06-26 2020-01-01 Mazda Motor Corporation Structure inférieure de carrosserie de véhicule
EP3702250A1 (fr) * 2019-02-27 2020-09-02 Mazda Motor Corporation Structure de carrosserie de véhicule et véhicule
US10822033B2 (en) 2018-01-26 2020-11-03 Iida Industry Co., Ltd. Vehicle structure
WO2024067763A1 (fr) * 2022-09-29 2024-04-04 长城汽车股份有限公司 Structure de renforcement latéral de carrosserie de véhicule et véhicule

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JP7139802B2 (ja) * 2018-09-10 2022-09-21 マツダ株式会社 車両の後部車体構造

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018075894A (ja) * 2016-11-08 2018-05-17 日産自動車株式会社 車体後部構造
KR20180074285A (ko) * 2016-12-23 2018-07-03 주식회사 포스코 차량용 크로스 멤버
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US10822033B2 (en) 2018-01-26 2020-11-03 Iida Industry Co., Ltd. Vehicle structure
FR3078049A1 (fr) * 2018-02-22 2019-08-23 Psa Automobiles Sa Procede d'assemblage entre eux d'elements de carrosserie composant une doublure d'aile laterale arriere d'un vehicule automobile.
WO2019162584A1 (fr) * 2018-02-22 2019-08-29 Psa Automobiles Sa Procede d'assemblage entre eux d'elements de carrosserie composant une doublure d'aile laterale arriere d'un vehicule automobile
EP3566931A1 (fr) * 2018-05-10 2019-11-13 Mazda Motor Corporation Structure de carrosserie de véhicule et véhicule
EP3587222A1 (fr) * 2018-06-26 2020-01-01 Mazda Motor Corporation Structure inférieure de carrosserie de véhicule
CN110641550A (zh) * 2018-06-26 2020-01-03 马自达汽车株式会社 车辆的下部车体构造
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CN110641550B (zh) * 2018-06-26 2022-04-12 马自达汽车株式会社 车辆的下部车体构造
EP3702250A1 (fr) * 2019-02-27 2020-09-02 Mazda Motor Corporation Structure de carrosserie de véhicule et véhicule
CN111619676A (zh) * 2019-02-27 2020-09-04 马自达汽车株式会社 车辆的后部车身结构
WO2024067763A1 (fr) * 2022-09-29 2024-04-04 长城汽车股份有限公司 Structure de renforcement latéral de carrosserie de véhicule et véhicule

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