WO2012121142A1 - 車体後部構造 - Google Patents
車体後部構造 Download PDFInfo
- Publication number
- WO2012121142A1 WO2012121142A1 PCT/JP2012/055365 JP2012055365W WO2012121142A1 WO 2012121142 A1 WO2012121142 A1 WO 2012121142A1 JP 2012055365 W JP2012055365 W JP 2012055365W WO 2012121142 A1 WO2012121142 A1 WO 2012121142A1
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- WO
- WIPO (PCT)
- Prior art keywords
- vehicle body
- pillar
- stiffener
- coupled
- flange
- Prior art date
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Classifications
-
- 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
-
- 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
- B62D25/02—Side panels
-
- 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
Definitions
- the present invention relates to a rear body structure in a vehicle such as an automobile.
- the rear end portion 1c of the retractor attachment reinforcement 1 is disposed on the extension line L of the linear portion of the rear end ridge line portion 3a of the wheel house extension 3 to thereby retract the retractor.
- the rigidity of the entire rear portion of the vehicle body can be improved while increasing the support rigidity of the mounting portion.
- a rear suspension mechanism that rotatably supports the rear wheel is provided at the rear part of the vehicle body, and a thrust load applied from a shock absorber (damper) constituting the rear suspension mechanism is applied from the rear wheel house 4 to the wheel house extension 3. And it is transmitted to the D pillar reinforcement 5 via the retractor attachment reinforcement 1.
- the wheel house extension 3 and the retractor attachment reinforcement 1 are enlarged or thickened in order to sufficiently support the thrust load from the shock absorber, or a separate member. It is necessary to reinforce and, as a result, the weight of the vehicle body increases.
- a general object of the present invention is to provide a vehicle body rear structure capable of improving the rigidity and strength of the vehicle body rear portion while suppressing an increase in vehicle body weight.
- the present invention provides a vehicle body rear structure, a rear pillar extending in the vertical direction at the rear of the vehicle body, and a member extending from the middle of the rear pillar in the vertical direction toward the vehicle front side.
- a rear wheel house disposed below the member, and a stiffener having a lower end coupled to the rear wheel house and an upper end coupled to the member, and at least a rear rear from a coupling portion to which the stiffener is coupled
- the rear end lower end part of the rear part is inclined and arranged so as to be located above the front end lower end part of the rear part.
- the rear lower end portion of the rear portion of the member is positioned higher than the lower end portion of the front end of the rear portion in the rear rear portion from the coupling portion where the stiffener is coupled to the member. It is inclined. Accordingly, in the present invention, for example, when a load (push-up load) acting from a shock absorber of a rear suspension mechanism (not shown) is transmitted from the rear wheel house to the member via the stiffener, the rear end of the rear portion of the member is removed from the stiffener. In this case, the load transmission efficiency from the stiffener to the member is improved, and the load transmission amount to the rear pillar can be increased. As a result, according to the present invention, the rear pillar can sufficiently support (absorb) the load without increasing the size and thickness of the stiffener member. Can be improved.
- rigidity refers to the difficulty of deformation of the vehicle body due to external force (the strength at which the vehicle body does not deform), and “strength” refers to compression strength, tensile strength, torsional strength, bending strength, and the like. The overall strength including various strengths.
- the present invention is characterized in that the rear pillar is disposed so as to be inclined upwardly with an upper end located on the front side, and the rear portion is inclined so as to be substantially perpendicular to the rear pillar.
- the rear portion of the member is inclined so as to be substantially perpendicular to the rear pillar, so that the load can be distributed and transmitted in a balanced manner from the member in the vertical direction of the rear pillar.
- the load transmission efficiency to can be improved.
- the present invention is characterized in that the stiffener is disposed so as to be inclined upwardly so that the upper end is located behind the lower end, and is inclined so as to be substantially perpendicular to the rear pillar. To do.
- the load transmission efficiency from the stiffener to the member and the rear pillar can be improved by arranging the stiffener so as to be substantially perpendicular to the rear pillar.
- the present invention includes a lap portion in which the rear pillar is formed by an upper rear pillar upper and a lower rear pillar lower, and is joined by overlapping a lower end of the rear pillar upper and an upper end of the rear pillar lower, The rear end of the member is coupled to the wrap portion.
- the present invention it is possible to reinforce the wrap portion by providing a lap portion in which the lower end of the rear pillar upper and the upper end of the rear pillar lower are overlapped and joined, and by joining a member to the lap portion. Further, the load transmitted from the stiffener can be received by the overlapped lap portion, and the load can be more firmly supported by the rear pillar having the wrap portion.
- the present invention is characterized in that the rear pillar has a front surface facing the front side of the vehicle body, and the rear end of the member abuts against the front surface and is coupled.
- the wrap portion can be reinforced by the rear end of the member being abutted against and coupled to the front surface of the rear pillar. Further, the load transmitted from the stiffener can be more firmly supported by the lap portion on the front surface of the rear pillar.
- the member includes an inner member and an outer member, and the inner member extends from the inner vertical wall on the vehicle interior side to the vehicle outer side from the upper end of the inner vertical wall.
- the outer member has an inner upper wall, and the outer member is disposed on the outer side of the passenger compartment and is opposed to the inner vertical wall.
- the outer member extends from the lower end of the outer vertical wall toward the inner side of the passenger compartment. A lower end of the inner vertical wall and the extending end of the outer lower wall are coupled, and an upper end of the outer vertical wall and an extending end of the inner upper wall are coupled.
- a closed cross section is formed, and the inner member extends from the rear end of the inner vertical wall toward the vehicle interior side and faces the front surface of the rear pillar, and extends from the rear end of the inner upper wall toward the vehicle body upper side.
- a lateral flange extending at least, Flange, characterized in that it is coupled to the front of the rear pillar.
- the inner member is formed with a vertical flange and a horizontal flange as compared with the case where the inner member is formed into a cross-sectional hat shape and the flange is formed on each of the vertical, upper, and lower walls.
- the formability of the flange for abutting and joining the rear end of the member to the front surface of the rear pillar can be improved. Further, the load from the member toward the rear pillar can be efficiently transmitted by the vertical flange and the horizontal flange formed on the inner member.
- the rear pillar includes a pillar flange extending from the front surface toward the front side of the vehicle body, and the inner upper wall rises upward from the extending end and faces the pillar flange.
- a flange is provided, and the pillar flange and the vehicle body rear end of the upper wall flange are coupled to each other.
- the rear end portion (rear end) of the upper wall flange located in the vicinity of the lateral flange of the inner member is coupled to the pillar flange, so that the formability of the inner member (described later in the embodiment)
- the load transmission efficiency from the lateral flange of the inner member to the rear pillar can be improved.
- the present invention includes a bulkhead disposed so as to partition the closed cross section of the member into a plurality in the longitudinal direction of the vehicle body, and an upper end of the stiffener is disposed at a position overlapping the bulkhead in the vehicle width direction. And coupled to the bulkhead via the inner member.
- the stiffener is coupled to the bulkhead via the inner member, thereby improving the rigidity of the member alone, improving the coupling strength between the stiffener and the member, and improving the load transmission efficiency to the rear pillar. This can be further improved.
- a plurality of the bulkheads are arranged at predetermined intervals along the longitudinal direction of the member, and at least one of the plurality of bulkheads is coupled to the inner member, At least another one of the bulkheads is coupled to the outer member.
- At least one bulkhead is coupled to both the inner member and the outer member constituting the member, thereby suppressing deformation of the inner member and the outer member.
- the strength can be further improved.
- the bulkhead is attached to one of the inner vertical wall and the outer vertical wall, and a working through hole is formed in the other vertical wall.
- the bulkhead is provided with a partition flange extending along the other vertical wall from the working through hole to an accessible position.
- the bulkhead partition flange can be accessed through the working through hole.
- a spot welding operation using a spot welding gun, a screw fastening operation, or the like can be performed using the work through hole.
- the bulkhead coupled to one of the inner vertical wall and the outer vertical wall can be easily coupled to the other vertical wall, thereby improving the rigidity and strength of the member. be able to.
- the lower end of the stiffener is formed in a cross-sectional hat shape, the upper end thereof is formed in a planar shape, and a region between the lower end and the upper end is gradually opened from the lower end toward the upper end.
- the cross-sectional size is reduced.
- the lower end of the stiffener is formed in a hat shape in the cross section, and in the region from the lower end to the middle of the upper end, because of the opening cross-sectional shape, it is possible to transmit the load with high rigidity and high strength. it can.
- the portion where the member is joined to the member has a planar shape that does not have an opening cross section, whereby a load can be efficiently transmitted to the surface of the vertical wall of the member (inner member).
- the size of the opening cross section in the region between the upper and lower ends of the stiffener is gradually reduced toward the upper end, thereby eliminating a sudden change in the shape of the opening cross section over the region between the upper and lower ends of the stiffener.
- the load transmission can be made highly efficient.
- the present invention is characterized in that the stiffener has a divergent shape portion in which the width in the longitudinal direction of the vehicle body gradually increases from the middle in the longitudinal direction toward the upper end.
- the stiffener by providing the stiffener with a divergent shape portion in which the width in the longitudinal direction of the vehicle body gradually increases from the middle in the longitudinal direction toward the upper end, the load is distributed and transmitted from the stiffener to a wide range of members. It is possible to improve the load transmission efficiency from the member to the member.
- the present invention is characterized in that at least two coupling portions are provided at the upper end of the stiffener.
- the stiffener is prevented from rotating in the vehicle front-rear direction around the coupling portion, and from the stiffener to the member.
- the transmitted load can be transmitted efficiently without escaping.
- a vehicle body rear structure capable of improving the rigidity of the vehicle body rear portion while suppressing an increase in vehicle body weight is obtained.
- FIG. 1 It is the side view which looked at the left part of the vehicle body rear part of the motor vehicle to which the vehicle body rear part structure which concerns on embodiment of this invention was applied from the vehicle interior side. It is the perspective view which looked at the vehicle body rear part shown in FIG. 1 from the diagonal direction. It is a perspective view which shows the state by which a member is couple
- (A) is a perspective view of the member seen from the vehicle interior side
- (b) is an exploded perspective view of the member shown in (a).
- (A) is a perspective view of the member seen from the passenger compartment outside
- (b) is an exploded perspective view of the member shown in (a).
- (A) is a front view of the stiffener
- (b) is an arrow view as viewed from the direction of arrow Z in (a)
- (c) is an end view along the VIIC-VIIC line in (a). It is a side view which shows the vehicle body rear part structure which concerns on a prior art.
- FIG. 1 is a side view of a left side portion of a vehicle body rear portion of an automobile to which a vehicle body rear structure according to an embodiment of the present invention is applied
- FIG. 2 is a view of the vehicle body rear portion shown in FIG. FIG.
- the up-down direction, the front-back direction, and the left-right direction shown below shall follow the direction shown by FIG.1 and FIG.2.
- a vehicle extends from a rear pillar 12 extending in the vertical direction at the vehicle body rear portion 10, and extends from the middle of the rear pillar 12 toward the front side of the vehicle body.
- a member 14 Further, an automobile (not shown) is disposed below the member 14, and a rear wheel house 16 including a rear wheel house inner 16 a on the vehicle interior side and a rear wheel house outer 16 b on the vehicle exterior side, and a lower end of the rear wheel via the bracket 18.
- a stiffener 20 coupled to the rear side of the house inner 16a and having an upper end coupled to the member 14 is provided.
- “coupling” means that a plurality of members are integrally and firmly fixed by a coupling means such as spot welding, laser welding, friction stir welding, or the like.
- the rear pillar (D pillar) 12 has an upper end located on the front side and is inclined so as to rise upward.
- the upper end of the rear pillar 12 is coupled to a roof side portion 24 of another rear pillar (C pillar) 22 formed wider in front of the rear pillar 12 than the rear pillar 12.
- a window portion 26 including a space portion surrounded by the upper side of the rear pillar 12 (a rear pillar upper 12 a described later), the other rear pillar 22, and the member 14 is formed above the vehicle body rear portion 10.
- the rear pillar 12 includes an upper rear pillar upper 12a and a lower rear pillar lower 12b.
- the rear pillar 12 includes a lap portion 28 in which the lower end of the rear pillar upper 12a and the upper end of the rear pillar lower 12b are overlapped and coupled.
- the rear pillar 12 has a front surface 30a and a rear surface 30b that face each other in the longitudinal direction of the vehicle body, and includes a pillar flange 32 that extends from the front surface 30a toward the front side of the vehicle body.
- FIGS. 3A and 3B are perspective views showing a state in which the members are coupled to the rear pillar.
- FIG. 3A shows a state before the coupling
- FIG. 3B shows a state after the coupling.
- the front end of the member 14 extending along the front-rear direction of the vehicle body rear portion 10 is coupled to the rear lower end of the other rear pillar 22 (see FIG. 2), and the rear end (vertical flange 37a described later) of the member 14 is the lap. It abuts and is coupled to the front surface 30a of the rear pillar 12 including the portion 28 (see FIG. 3).
- the symbol “*” indicates a spot welded part.
- the member 14 has at least a rear end lower end portion 34a of the rear portion 34 at the rear portion 34 (refer to a halftone dot portion in FIG. 1) rearward from the center of the coupling portion to which the upper end of the stiffener 20 is coupled.
- the portion 34 is inclined so as to be positioned above the lower end 34b of the front end.
- the member 14 extends substantially linearly along the substantially horizontal direction from the front end of the member 14 along the longitudinal direction of the vehicle body to the coupling portion where the upper end of the stiffener 20 is coupled, Further, the rear portion 34 rearward from the coupling portion is formed so as to curve upward from the front end lower end portion 34b of the rear portion 34 of the member 14 toward the rear end lower end portion 34a. Between the rear end lower end portion 34a and the front end lower end portion 34b in the rear part 34, the height direction position is different by a dimension H. In this case, the center line A1 of the rear portion 34 of the member 14 is disposed so as to be substantially perpendicular to the center line A2 of the rear pillar 12.
- FIG. 4 (a) is a front view of the member
- FIG. 4 (b) is a transparent front view through the inner member shown in FIG. 4 (a)
- FIG. 4 (c) is an IVC-
- FIG. 5A is a perspective view of the member viewed from the vehicle interior side
- FIG. 5B is an exploded perspective view of the member shown in FIG. 5A
- FIG. 6A is a perspective view of the member as viewed from the outside of the passenger compartment
- FIG. 6B is an exploded perspective view of the member shown in FIG.
- the member 14 includes an inner member 36 disposed on the vehicle interior side, an outer member 38 disposed on the vehicle exterior side (see FIG. 4C), and a plurality of closed cross sections 40 described later in the vehicle longitudinal direction.
- a first bulkhead 42 and a second bulkhead 44 arranged so as to be partitioned are provided (see FIGS. 4A and 4B).
- a plurality of bulkheads including the first bulkhead 42 and the second bulkhead 44 are illustrated, but any one single bulkhead may be provided.
- the inner member 36 includes an inner vertical wall 36 a on the vehicle interior side, and an inner upper wall 36 b extending from the upper end of the inner vertical wall 36 a toward the outer side of the vehicle interior. . Further, the inner member 36 extends from the rear end of the inner vertical wall 36a toward the vehicle interior side, and is connected to the front surface 30a of the rear pillar 12 and the vehicle upper side from the rear end of the inner upper wall 36b.
- a lateral flange 37b extending toward the upper side, an extended end 37c (see FIG. 6B) forming an end edge (ridge line portion) of the inner upper wall 36b, and upward from the extended end 37c. It has a rising pillar flange 32 and an upper wall flange 37d facing it.
- a rear end 37e of the vehicle body is provided at a boundary portion between the rear end of the upper wall flange 37d and the lateral flange 37b.
- a vehicle body rear side end portion 37e of the upper wall flange 37d is coupled to a pillar flange 32 projecting forward from the front surface 30a of the rear pillar 12 (see FIG. 3B).
- a fastening portion 46 to which an upper end of a stiffener 20 described later is screwed is provided, and a pair of screw fastening holes 48 are formed in the fastening portion 46. Further, an oval work through hole 50 is formed in the vicinity of the side end portion along the longitudinal direction of the inner vertical wall 36a adjacent to the rear wheel house inner 16a.
- the outer member 38 is disposed on the outer side of the passenger compartment and is opposed to the inner vertical wall 36a.
- the outer member 38 faces the inner side of the vehicle interior from the lower end of the outer vertical wall 38a.
- an outer lower wall 38b extending.
- the outer member 38 includes an extended end 39a (see FIG. 5B) that forms an end edge (ridge line portion) of the outer lower wall 38b, and a bottom formed downward from the extended end 39a.
- Wall flange 39b is disposed on the outer side of the passenger compartment and is opposed to the inner vertical wall 36a.
- the outer member 38 faces the inner side of the vehicle interior from the lower end of the outer vertical wall 38a.
- an outer lower wall 38b extending.
- the outer member 38 includes an extended end 39a (see FIG. 5B) that forms an end edge (ridge line portion) of the outer lower wall 38b, and a bottom formed downward from the extended end 39a.
- Wall flange 39b is disposed on the outer side of the passenger compartment and is opposed to the
- first bulkhead 42 and a second bulkhead 44 that are spaced apart from each other by a predetermined distance along the longitudinal direction of the member 14 are disposed (FIGS. 5B and 6B). reference).
- first bulkhead 42 is coupled to the substantially central portion of the outer member 38 via the plurality of first coupling portions 52
- second bulkhead 44 is coupled to the plurality of second coupling portions 54.
- it is coupled to the vicinity of the side end portion of the inner member 36 adjacent to the rear wheel house inner 16a.
- the first bulkhead 42 is provided with a fastening portion 60 disposed at a position corresponding to the fastening portion 46 of the inner member 36 and having a pair of screw fastening holes 58 to which the screw member 56 (see FIG. 2) is fastened. It is done. Further, in the first bulkhead 42, the screw portion of the screw member 56 (see FIG. 2) is positioned on the surface of the fastening portion 60 on the outer member 38 side (vehicle outer side) and at a position corresponding to the screw fastening hole 58. A nut (not shown) to be fastened is fixed.
- the screw member 56 is fastened to the nut via the fastening portion 46 of the inner member 36 and the fastening portion 60 of the first bulkhead 42.
- the inner member 36 is also coupled.
- the second bulkhead 44 is provided with a partition flange 62 made of a tongue piece extending along the inner vertical wall 36a from the working through hole 50 formed in the inner member 36 to an accessible position.
- the second bulkhead 44 is configured such that after the inner member 36 and the outer member 38 are coupled, the operator performs an operation of coupling the partition flange 62 and the outer member 38 through the work through hole 50, thereby 38 is also coupled.
- FIG. 7 (a) is a front view of the stiffener
- FIG. 7 (b) is an arrow view seen from the direction of arrow Z in FIG. 7 (a)
- FIG. 7 (c) is a VIIC- It is an end view along a VIIC line.
- the stiffener 20 is inclined so that the upper end of the stiffener 20 is rearwardly raised behind the lower end and is substantially perpendicular to the rear pillar 12. Further, the lower end of the stiffener 20 is formed in a hat shape (see FIG. 7C), the upper end thereof is formed in a planar shape (see FIG. 7B), and the region between the lower end and the upper end is formed. It is formed so that the size of the opening cross section gradually decreases from the lower end toward the upper end.
- the upper end of the stiffener 20 is disposed at a position that overlaps with the first bulkhead 42 (fastening portion 60) disposed at a substantially central portion in the closed section 40 of the member 14 in the vehicle width direction (FIGS. 1 and 4). a), see FIG. 4B).
- a flat plate-like first fastening portion 64 is provided at the upper end of the stiffener 20, and a pair of screw fastening holes 66 are formed in the first fastening portion 64 in parallel.
- a pair of screw fastening holes 66 formed in the stiffener 20 a pair of screw fastening holes 48 formed in the inner member 36, and a pair of screw fastening holes of the first bulkhead 42 coupled to the outer member 38.
- the screw members 56 are respectively screwed into 58, and the three members are integrally screw-fastened (co-fastened).
- the upper end of the stiffener 20 is screwed to the member 14 (the inner member 36 and the outer member 38).
- the pair of screw fastening holes 66 formed at the upper end of the stiffener 20 functions as two coupling portions.
- a diverging shape portion 68 On the lower side of the first fastening portion 64 of the stiffener 20, there is provided a diverging shape portion 68 whose width in the longitudinal direction of the vehicle body gradually increases from the middle of the stiffener 20 toward the upper end (see FIG. 7A). ).
- the lower end of the stiffener 20 is provided with a second fastening portion 70 that is screw-fastened to the rear central portion of the rear wheel house inner 16a via the bracket 18.
- the second fastening portion 70 is formed with a pair of screw fastening holes 72 extending along the longitudinal direction of the stiffener 20 and spaced apart by a predetermined distance.
- a pair of screw members 74 are screwed into the pair of screw fastening holes 72, whereby the lower end of the stiffener 20 is fixed to the rear wheel house inner 16a.
- the vehicle body rear portion 10 to which the vehicle body rear portion structure according to the present embodiment is applied is basically configured as described above. Next, the function and effect will be described.
- a rear lower end portion 34a of the rear portion 34 of the member (refer to a halftone dot portion in FIG. 1) in the rear portion 34 rearward from the center of the coupling portion where the stiffener 20 is coupled to the member 14. are inclined so as to be positioned above the lower end 34b of the front end of the rear portion 34 by a height dimension H (see FIG. 1).
- the rear portion of the member 14 is used.
- the load transmission efficiency from the stiffener 20 to the member 14 is improved, and the rear pillar 12 is connected to the rear pillar 12.
- the amount of load transmission can be increased.
- the load can be sufficiently supported by the rear pillar 12 without increasing the size and thickness of the stiffener 20 and the member 14, so that the increase in the weight of the vehicle body is suppressed and the rear portion 10 of the vehicle body is suppressed.
- Stiffness and strength can be improved.
- “Rigidity” refers to the difficulty of deformation of the vehicle body due to external force (strength that the vehicle body does not deform), and “strength” refers to various strengths such as compressive strength, tensile strength, torsional strength, and bending strength. Including comprehensive strength.
- the center line A ⁇ b> 1 of the rear portion 34 of the member 14 is disposed so as to be substantially perpendicular to the center line A ⁇ b> 2 of the rear pillar 12.
- the load can be distributed and transmitted from 14 to the rear pillar 12 in the up and down direction, and the load transmission efficiency to the rear pillar 12 can be improved.
- the load transmission efficiency from the stiffener 20 to the member 14 and the rear pillar 12 can be improved by arranging the stiffener 20 so as to be substantially perpendicular to the rear pillar 12. .
- a lap portion 28 is provided in which the lower end of the rear pillar upper 12a and the upper end of the rear pillar lower 12b are overlapped and joined, and the member 14 is joined to the lap portion 28 to reinforce the lap portion 28. can do. Further, the load transmitted from the stiffener 20 can be received by the lap portion 28 constituted by two layers, and the load can be more firmly supported by the rear pillar 12 having the wrap portion 28.
- the vertical flange 37 a formed from the rear end of the member 14 is abutted against and coupled to the front surface 30 a of the rear pillar 12 to reinforce the lap portion 28. Can do. Further, the load transmitted from the stiffener 20 can be more firmly supported by the lap portion 28 of the front surface 30a of the rear pillar 12.
- the inner member 36 has a vertical flange 37a and a horizontal flange 37b.
- the flange formability for abutting and joining the rear end of the member 14 to the front surface 30a of the rear pillar 12 can be improved.
- the load directed from the member 14 to the rear pillar 12 can be efficiently transmitted by the vertical flange 37 a and the horizontal flange 37 b formed on the inner member 36.
- the pillar flange 32 of the rear pillar 12 and the vehicle body rear side end portion 37e of the upper wall flange 37d of the inner member 36 constituting the member 14 are combined. is doing.
- the lateral flange 37b of the inner member 36 is directly coupled to the front surface 30a of the rear pillar 12, the load transmission efficiency from the lateral flange 37b to the rear pillar 12 is improved.
- the lateral flange 37b of the inner member 36 has a rear end. Therefore, when the horizontal flange 37b is provided with a margin for coupling to the rear pillar 12, the height of the horizontal flange 37b in the vertical direction increases, and the inner member 36 The problem arises in the formability.
- the formability of the inner member 36 is obtained by coupling the vehicle body rear side end portion 37e, which is the rear end of the upper wall flange 37d located in the vicinity of the lateral flange 37 of the inner member 36, to the pillar flange 32.
- the load transmission efficiency from the lateral flange 37b of the inner member 36 to the rear pillar 12 can be improved while overcoming the above problem.
- the stiffener 20 is screw-fastened (jointly fastened) to the first bulkhead 42 via the inner member 36 (see FIGS. 2, 5 and 7A), so that the member 14 While improving the rigidity of a single body, the joint strength between the stiffener 20 and the member 14 can be improved, and the load transmission efficiency to the rear pillar 12 can be further improved.
- the second bulkhead 44 and the first bulkhead 42 are coupled to the inner member 36 and the outer member 38 constituting the member 14 respectively (FIG. 5B, FIG. b)), the deformation of the inner member 36 and the outer member 38 is suppressed, and as a result, the rigidity and strength of the member 14 alone can be further improved.
- the working through hole 50 is used.
- the partition flange 62 of the second bulkhead 44 can be easily accessed.
- the spot welding work of the partition flange 62 can be performed using a spot welding gun (not shown) using the working through hole 50.
- a screw fastening hole (not shown) is formed in the partition flange 62, a screw fastening operation by an operator can be performed through the work through hole 50.
- the second bulkhead 44 coupled to the inner vertical wall 36a can be easily coupled (fastened) to the outer vertical wall 38a, and the rigidity of the member 14 formed with the closed cross section 40 can be increased. Strength can be improved.
- the lower end of the stiffener 20 is formed in a cross-sectional hat shape (see FIG. 7C), and is formed in an open cross-sectional shape in the region from the lower end to the upper end. It has rigidity and high strength and can transmit the load reliably.
- the coupling portion (first fastening portion 64) with the member 14 is formed into a planar shape having no opening cross section (see FIG. 7B), so that the member 14 (inner member 36) A load can be efficiently transmitted to the surface of the inner vertical wall 36a.
- the first fastening portion 64 has, for example, a cross-sectional hat shape having an opening cross section, a rotational load in the vehicle front-rear direction centered on the upper end with respect to the stiffener 20 is input.
- the opening cross section is crushed and deformed, the load escapes, and the load transmission efficiency from the stiffener 20 to the member 14 decreases.
- the first fastening portion 64 is formed in a planar shape, so that the rotational load of the stiffener 20 is also transmitted along the surface of the inner vertical wall 36a to efficiently transmit the load. be able to.
- the size of the opening cross section in the region between the upper end and the lower end of the stiffener 20 is gradually reduced toward the upper end, so that a sharp change in the shape of the opening cross section over the region between the upper end and the lower end of the stiffener 20 is achieved.
- the load transmission can be made highly efficient.
- the stiffener 20 is provided with a divergent shape portion 68 in which the width in the longitudinal direction of the vehicle body gradually increases from the middle in the longitudinal direction toward the upper end, so that the load is dispersed from the stiffener 20 to the wide range of the member 14.
- the load transmission efficiency from the stiffener 20 to the member 14 can be improved.
- the first fastening portion 64 is The stiffener 20 can be prevented from pivoting in the vehicle longitudinal direction as the center, and the load transmitted from the stiffener 20 to the member 14 can be transmitted efficiently without escaping.
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Abstract
Description
車体後部10の前後方向に沿って延在するメンバ14の前端は、他のリヤピラー22の後部下端に結合され(図2参照)、メンバ14の後端(後記する縦フランジ37a)は、前記ラップ部28を含むリヤピラー12の前面30aに対して突き当てて結合される(図3参照)。なお、図3(b)において、記号「*」は、スポット溶接部位を示している。
12 リヤピラー
12a リヤピラーアッパ
12b リヤピラーロア
14 メンバ
16 リヤホイルハウス
20 スティフナ
28 ラップ部
30a 前面
34 後方部位
34a 後端下端部
34b 前端下端部
36 インナ部材
36a インナ縦壁
36b インナ上壁
37c インナ上壁の延出端
37d 上壁フランジ
37e 車体後方側端部
38 アウタ部材
38a アウタ縦壁
38b アウタ下壁
39a アウタ下壁の延出端
40 閉断面
42、44 バルクヘッド
50 作業用貫通孔
62 隔壁フランジ
66 ねじ締結孔(2つの結合部)
68 末広がり形状部
Claims (13)
- 車体後部構造であって、
車体後部で上下方向に延在するリヤピラーと、
前記リヤピラーの上下方向の途中から車体前方側に向けて延出するメンバと、
前記メンバの下方に配置されるリヤホイルハウスと、
下端が前記リヤホイルハウスに結合され、上端が前記メンバに結合されるスティフナと、
を備え、
前記メンバは、少なくとも前記スティフナが結合される結合部から後方の後方部位において、前記後方部位の後端下端部が、前記後方部位の前端下端部よりも上方に位置するように傾斜配置されることを特徴とする車体後部構造。 - 前記リヤピラーは、上端が前側に位置して前上がり状に傾斜して配置され、
前記後方部位は、前記リヤピラーに対して略垂直となるように傾斜していることを特徴とする請求項1記載の車体後部構造。 - 前記スティフナは、上端が下端よりも後方に位置する後ろ上がり状に傾斜して配置されると共に、前記リヤピラーに対して略垂直となるように傾斜していることを特徴とする請求項2記載の車体後部構造。
- 前記リヤピラーは、上側のリヤピラーアッパと下側のリヤピラーロアとによって形成されると共に、前記リヤピラーアッパの下端と前記リヤピラーロアの上端を重畳させて結合したラップ部を備え、
前記メンバの後端は、前記ラップ部に結合されることを特徴とする請求項1記載の車体後部構造。 - 前記リヤピラーは、車体前方側に面する前面を有し、
前記メンバの後端は、前記前面に突き当てて結合されることを特徴とする請求項1記載の車体後部構造。 - 前記メンバは、インナ部材とアウタ部材とを備え、
前記インナ部材は、車室内側のインナ縦壁と、前記インナ縦壁の上端から車室外側に向かって延出するインナ上壁とを有し、
前記アウタ部材は、車室外側に配置されて前記インナ縦壁と対向するアウタ縦壁と、前記アウタ縦壁の下端から車室内側に向かって延出するアウタ下壁とを有し、
前記インナ縦壁の下端と前記アウタ下壁の延出端とが結合されると共に、前記アウタ縦壁の上端と前記インナ上壁の延出端とが結合されることで閉断面が形成され、
前記インナ部材は、前記インナ縦壁の後端から車室内側に延出して前記リヤピラーの前面と対向する縦フランジと、前記インナ上壁の後端から車体上方側に向かって延出する横フランジとを備え、少なくとも前記縦フランジが前記リヤピラーの前面に対して結合されることを特徴とする請求項5記載の車体後部構造。 - 前記リヤピラーは、前記前面から車体前方側に向かって延出するピラーフランジを備え、
前記インナ上壁は、前記延出端から上方に立ち上がり前記ピラーフランジと対向する上壁フランジを備え、
前記ピラーフランジと前記上壁フランジの車体後方側端部とが結合されることを特徴とする請求項6記載の車体後部構造。 - 前記メンバの前記閉断面を車体前後方向で複数に仕切るように配置されたバルクヘッドを備え、
前記スティフナの上端は、前記バルクヘッドと車幅方向で重畳する位置に配置されると共に、前記インナ部材を介して前記バルクヘッドに結合されることを特徴とする請求項6記載の車体後部構造。 - 前記バルクヘッドは、前記メンバの長手方向に沿って所定間隔離間して複数配置され、
前記複数のバルクヘッドの少なくとも1つは、前記インナ部材に結合され、
前記複数のバルクヘッドの少なくとも他の1つは、前記アウタ部材に結合されることを特徴とする請求項8記載の車体後部構造。 - 前記インナ縦壁と前記アウタ縦壁とのいずれか一方の縦壁に対して前記バルクヘッドが取り付けられると共に、いずれか他方の縦壁に対して作業用貫通孔が形成され、
前記バルクヘッドは、前記作業用貫通孔からアクセス可能な位置まで前記他方の縦壁に沿うように延出する隔壁フランジが設けられることを特徴とする請求項8記載の車体後部構造。 - 前記スティフナは、下端が断面ハット状に形成され、上端が面状に形成され、
前記下端と前記上端との間の領域が前記下端から前記上端に向かうにつれて徐々に開口断面の大きさが縮小するように形成されることを特徴とする請求項1記載の車体後部構造。 - 前記スティフナは、長手方向の途中から前記上端に向かうにつれて車体前後方向の幅が徐々に大きくなる末広がり形状部を有することを特徴とする請求項11記載の車体後部構造。
- 前記スティフナの前記上端には、少なくとも2つの結合部が設けられることを特徴とする請求項11記載の車体後部構造。
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JP2013503501A JP5698340B2 (ja) | 2011-03-10 | 2012-03-02 | 車体後部構造 |
EP12755352.7A EP2684780B1 (en) | 2011-03-10 | 2012-03-02 | Rear structure of car body |
BR112013022993A BR112013022993A2 (pt) | 2011-03-10 | 2012-03-02 | estrutura traseira de chassi de veículo |
US14/003,866 US8991906B2 (en) | 2011-03-10 | 2012-03-02 | Rear vehicle body structure |
CN201280012754.8A CN103442973B (zh) | 2011-03-10 | 2012-03-02 | 车身后部构造 |
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EP (1) | EP2684780B1 (ja) |
JP (1) | JP5698340B2 (ja) |
CN (1) | CN103442973B (ja) |
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US8991906B2 (en) | 2015-03-31 |
CN103442973B (zh) | 2016-08-17 |
JPWO2012121142A1 (ja) | 2014-07-17 |
EP2684780B1 (en) | 2016-06-15 |
JP5698340B2 (ja) | 2015-04-08 |
EP2684780A4 (en) | 2014-11-19 |
BR112013022993A2 (pt) | 2016-12-06 |
US20130341970A1 (en) | 2013-12-26 |
EP2684780A1 (en) | 2014-01-15 |
CN103442973A (zh) | 2013-12-11 |
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