WO2023181197A1 - 車体構造 - Google Patents

車体構造 Download PDF

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Publication number
WO2023181197A1
WO2023181197A1 PCT/JP2022/013595 JP2022013595W WO2023181197A1 WO 2023181197 A1 WO2023181197 A1 WO 2023181197A1 JP 2022013595 W JP2022013595 W JP 2022013595W WO 2023181197 A1 WO2023181197 A1 WO 2023181197A1
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WO
WIPO (PCT)
Prior art keywords
reinforcement
pair
side member
leg
vehicle
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2022/013595
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English (en)
French (fr)
Japanese (ja)
Inventor
康雄 秋本
健太郎 松隈
渉 末廣
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Motors Corp
Original Assignee
Mitsubishi Motors Corp
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.)
Filing date
Publication date
Application filed by Mitsubishi Motors Corp filed Critical Mitsubishi Motors Corp
Priority to PCT/JP2022/013595 priority Critical patent/WO2023181197A1/ja
Priority to JP2024509538A priority patent/JP7730092B2/ja
Publication of WO2023181197A1 publication Critical patent/WO2023181197A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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

Definitions

  • the present invention relates to a vehicle body structure, and particularly to a vehicle body structure including a suspension tower that is joined to the side surface of a side member and supports the top of a shock absorber.
  • a technique related to a vehicle body structure including a suspension tower that is joined to the side surface of a side member and supports the top of a shock absorber.
  • a front leg section and a rear leg section are provided at the lower part of a suspension tower, and the front leg section and the rear leg section are branched apart in the vehicle length direction (vehicle longitudinal direction), and the front leg section and the rear leg section are connected to the main frame (side
  • a suspension tower structure is disclosed that is joined by welding to a member (a member).
  • the suspension tower Since the suspension tower is connected to the shock absorber, upper arm, etc. of the suspension device, forces input from the road surface to the tires in the vehicle longitudinal direction, vehicle width direction, and vertical direction are transmitted. Therefore, due to the force transmitted to the suspension tower, the structure around the pair of legs, that is, the side member and the pair of legs themselves, may be deformed, resulting in delamination of the joint or reduced durability. there's a possibility that.
  • the present invention has been made in view of the above problems, and its purpose is to make it possible to ensure good durability and rigidity of the suspension tower around the joint between the suspension tower and the side member.
  • the purpose is to provide the vehicle body structure.
  • the vehicle body structure of the present invention includes a side member extending in the longitudinal direction of the vehicle, a pair of legs formed at intervals in the longitudinal direction of the vehicle, joined to the side surface of the side member, and a shock absorber.
  • a suspension tower that supports the top of the absorber; and a reinforcement that is disposed inside the side member at a position corresponding to at least one of the pair of legs and that reinforces the side member;
  • a side surface of the side member intersects with a surface direction, and at least one of the pair of legs and the reinforcement are arranged at a position where they overlap when viewed from the vehicle width direction.
  • the reinforcement that reinforces the side member and at least one of the pair of legs of the suspension tower are arranged at a position where they overlap when viewed from the vehicle width direction, so that the structure around the pair of legs, that is, It is possible to improve the rigidity of the side member and the pair of legs themselves. As a result, even if force input from the road surface to the tire is transmitted to the suspension tower via the shock absorber or the like, deformation of the structure around the pair of legs can be suppressed. Therefore, according to the vehicle body structure of the present invention, it is possible to satisfactorily ensure the durability around the joint between the suspension tower and the side member and the rigidity of the suspension tower.
  • the reinforcement is arranged at a position that overlaps a lower end portion of at least one of the corresponding pair of leg portions when viewed from the vehicle width direction.
  • This configuration improves the rigidity of the structure around the lower ends of the pair of legs, which are located away from the positions that support the shock absorber and upper arm and where relatively large stress is likely to occur, and prevents deformation. Can be suppressed. As a result, it becomes possible to better ensure durability around the joint between the suspension tower and the side member and the rigidity of the suspension tower.
  • the reinforcement is arranged at a position that overlaps a joint portion between at least one of the corresponding pair of leg portions and the side surface of the side member when viewed from the vehicle width direction.
  • At least one of the pair of leg portions has a flange portion formed at a lower end portion thereof, which extends in the longitudinal direction of the vehicle and is joined to a side surface of the side member at at least a portion of a peripheral edge portion, and the reinforcement includes: It is preferable that the flange portion is disposed at a position overlapping the flange portion of at least one of the corresponding pair of leg portions when viewed from the vehicle width direction.
  • the reinforcement is located at a position that overlaps, as viewed from the vehicle width direction, a midway portion in the vehicle longitudinal direction of a joint portion between the flange portion of at least one of the corresponding pair of leg portions and the side surface of the side member. It is preferable that the
  • the rigidity of the middle part can be improved and the force can be taken care of in the middle part. I can do it. As a result, it is possible to reduce the force applied to the end of the joint where stress tends to concentrate, and to effectively suppress the end of the joint from peeling off.
  • the reinforcements are respectively arranged at positions corresponding to the pair of legs.
  • the reinforcements are arranged in correspondence with each pair of legs, so it is possible to better ensure the durability around the joint between the suspension tower and the side member and the rigidity of the suspension tower.
  • the suspension tower has a spring house that supports the top of the shock absorber, and an outer reinforcement that is joined to the inside of the spring house and reinforces the spring house, and the spring house has a spring house that supports the top of the shock absorber.
  • the outer reinforcement has a pair of first leg portions formed at a distance from each other in the longitudinal direction of the vehicle, and the outer reinforcement includes a pair of first leg portions formed at a distance from each other in the longitudinal direction of the vehicle.
  • the reinforcement has a pair of second leg parts constituting a corresponding one of the first leg part and the second leg part of the corresponding pair of leg parts, when viewed from the vehicle width direction. Preferably, they are arranged in overlapping positions.
  • the reinforcement is arranged at a position overlapping the first leg when viewed from the vehicle width direction.
  • the lower end of the second leg is located lower than the lower end of the first leg.
  • the lower end of the second leg extends to the lower end of the side surface of the side member.
  • the length of the joint between the second leg portion and the side surface of the side member can be further ensured.
  • the second leg extends to the lower end of the side surface of the side member, which is a relatively hard part that is difficult to deform, the area around the lower end of the second leg may separate from the side member as the side surface of the side member deforms. This can be effectively suppressed.
  • the reinforcements are joined to at least mutually opposing inner walls of the side members. With this configuration, the reinforcement can be firmly fixed to the side member.
  • the reinforcement is joined to an inner wall of the side surface, an inner wall of the upper surface, and an inner wall of the lower surface of the side member on the outer side in the vehicle width direction.
  • the reinforcement includes a first reinforcement in the shape of a flat plate disposed on the front side in the longitudinal direction of the vehicle, and a second reinforcement arranged in the rear side in the longitudinal direction of the vehicle and having an L-shaped vertical cross section. is preferred. With this configuration, sufficient rigidity and strength of the reinforcement can be ensured.
  • the rigidity of the structure around the pair of legs can be improved, deformation of the structure around the pair of legs can be suppressed. Therefore, according to the vehicle body structure of the present invention, it is possible to satisfactorily ensure the durability around the joint between the suspension tower and the side member and the rigidity of the suspension tower.
  • FIG. 2 is a perspective view of the vehicle body structure according to the embodiment viewed from above and from the outside in the vehicle width direction.
  • FIG. 3 is an explanatory diagram of the inside of the side member viewed from the front side.
  • FIG. 2 is an explanatory diagram of the inside of the side member viewed from the inside in the vehicle width direction and from the front side.
  • FIG. 2 is an explanatory diagram of the suspension tower viewed from the outside in the vehicle width direction and from the front side.
  • FIG. 2 is an explanatory diagram of the suspension tower viewed from the outside in the vehicle width direction. It is a schematic diagram which shows the positional relationship between the front leg part of a pair of leg parts, and a 1st reinforcement.
  • FIG. 7 is an explanatory diagram showing a joint portion of a front leg portion in a modification of the embodiment. It is an explanatory view showing other examples of reinforcement. It is an explanatory view showing still another example of reinforcement.
  • the vehicle longitudinal direction, vehicle width direction (horizontal direction), and vertical direction will be expressed based on a vehicle to which the vehicle body structure according to the embodiment is applied.
  • the vehicle longitudinal direction will be simply referred to as "the longitudinal direction.”
  • FIG. 1 is a perspective view of the vehicle body structure according to the embodiment viewed from above and from the outside in the vehicle width direction.
  • the vehicle body structure 1 according to the embodiment is applied to a front wheel (not shown) of a vehicle.
  • the vehicle body structure 1 includes a vehicle body frame 10 and a suspension device 20, as shown in FIG.
  • the vehicle body frame 10 includes a pair of side members 12, a plurality of cross members 14, and a bumper beam 16.
  • the pair of side members 12 are vehicle body frames extending in the front-rear direction, and are provided in pairs on the left and right with an interval in the vehicle width direction.
  • the side member 12 is a cylindrical frame with a rectangular cross section that connects an inner frame 121 (see FIG. 2) and an outer frame 122 (see FIG. 2).
  • the plurality of cross members 14 are frames that extend in the vehicle width direction and are connected to both of the pair of side members 12, and are arranged at intervals in the front-rear direction.
  • the cross member 14 includes two suspension cross members 14a arranged below the suspension device 20.
  • the bumper beam 16 is a frame connected to the front end of the side member 12 and extending in the vehicle width direction.
  • FIG. 2 is an explanatory diagram of the inside of the side member 12 viewed from the front side
  • FIG. 3 is an explanatory diagram of the inside of the side member 12 viewed from the inside in the vehicle width direction and from the front side.
  • the illustration of the inner frame 121 of the side member 12 is omitted.
  • a pair of reinforcements 15 for reinforcing the side member 12 are provided inside the side member 12.
  • the pair of reinforcements 15 are partition-like members that are spaced apart in the front-rear direction so as to partition a part of the interior of the side member 12, and are provided near the suspension device 20.
  • the pair of reinforcements 15 includes a first reinforcement 15A disposed on the front side and a second reinforcement 15B disposed on the rear side.
  • the first reinforcement 15A has a flat plate shape when viewed from the front and rear directions.
  • the surface direction of the first reinforcement 15A intersects with the outer side surface 12b of the side member 12 in the vehicle width direction.
  • the plane direction here is the direction in which the plate-like portion extends. That is, in this embodiment, the surface direction of the side surface 12b is the front-rear direction, and the surface direction of the first reinforcement 15A is the vehicle width direction.
  • the first reinforcement 15A is joined by welding to an inner wall 123a of the side member 12 on the side of the upper surface 12a, an inner wall 123b of the side member 12 on the side of the side surface 12b, and an inner wall 123c of the side member 12 on the side of the lower surface 12c.
  • the second reinforcement 15B is a member whose vertical cross section is L-shaped. More specifically, the second reinforcement 15B includes a flat plate portion 151B that has a flat plate shape when viewed from the front and rear directions, and a bottom plate portion 152B that extends from the lower end of the flat plate portion 151B toward the front side. Note that, as shown in FIG. 2, the inner side of the flat plate portion 151B in the vehicle width direction has a tapered shape extending inward in the vehicle width direction from the upper end toward the lower end.
  • the surface direction of the second reinforcement 15B also intersects with the side surface 12b of the side member 12, similarly to the first reinforcement 15A. That is, in this embodiment, the surface direction of the second reinforcement 15B is the vehicle width direction.
  • the second reinforcement 15B is joined to the inner wall 123a on the upper surface 12a side, the inner wall 123b on the side surface 12b side, and the inner wall 123c on the lower surface 12c side of the side member 12 by welding.
  • the bottom plate portion 152B of the second reinforcement 15B is formed to bypass the outer frame 122, as shown in FIG. 3, and is joined to the inner wall 123c on the lower surface 12c side of the inner frame 121 (see FIG. reference).
  • the suspension devices 20 are provided as a pair on the left and right in the vehicle width direction, corresponding to front wheels (not shown).
  • the suspension device 20 includes a lower arm 22, a knuckle 24, an upper arm 26, a shock absorber 28, and a suspension tower 30.
  • the lower arm 22 is rotatably connected to the ends of the two suspension cross members 14a around an axis extending in the front-rear direction. That is, the lower arm 22 is attached to the two suspension cross members 14a so as to be swingable in the vertical direction.
  • the knuckle 24 is rotatably connected to the outer tip of the lower arm 22 in the vehicle width direction about an axis extending in the vertical direction.
  • a hub 6 that supports a front wheel (not shown) and is connected to a drive shaft (not shown) is rotatably attached to the knuckle 24 .
  • a steering rod 8 is connected between the left and right knuckles 24 via a steering gear box 7 that operates in conjunction with a steering wheel (not shown) operated by the driver.
  • a stabilizer 9 is connected between the left and right knuckles 24 to suppress rolling of the vehicle body.
  • the upper arm 26 is rotatably connected to the knuckle 24 around an axis extending in the vertical direction. Further, the upper arm 26 branches into two parts toward the inside in the vehicle width direction from the connection part with the knuckle 24, and is rotatably connected to the suspension tower 30 at each end. That is, the upper arm 26 is attached to the suspension tower 30 so as to be swingable in the vertical direction.
  • the shock absorber 28 is a mechanism that absorbs vibrations in the vertical direction from the front wheels, and is connected to the lower arm 22 so as to be rotatable around an axis extending in the front-rear direction. Further, the top portion 28a of the shock absorber 28 is fixed to the suspension tower 30 by fitting. Note that a coil spring (not shown) is wound around the shock absorber 28.
  • FIG. 4 is an explanatory diagram of the suspension tower 30 viewed from the outside in the vehicle width direction and from the front side
  • FIG. 5 is an explanatory diagram of the suspension tower 30 viewed from the outside in the vehicle width direction.
  • the suspension tower 30 has a spring house 40, an inner force 50, and an outer force 60, and supports the top 28a of the shock absorber 28.
  • the spring house 40 has a housing portion 42 and a pair of first leg portions 44.
  • the accommodating portion 42 has a ceiling portion 42A and a side surface portion 42B extending downward from both ends of the ceiling portion 42A in the front-rear direction, and is open on both sides in the vehicle width direction.
  • the spring house 40 accommodates a coil spring (not shown) wound around the shock absorber 28 in a space surrounded by a ceiling part 42A and a side part 42B.
  • the ceiling portion 42A is provided with a fitting hole 421 (see FIG. 1) for fixing the top portion 28a of the shock absorber 28 by fitting.
  • the pair of first leg portions 44 are formed at intervals in the front-rear direction and are joined to the side surface 12b of the side member 12 by welding.
  • the inner force 50 is arranged so as to cover the side surface portion 42B of the spring house 40 from both sides in the front-rear direction while closing the opening on the inside of the spring house 40 in the vehicle width direction.
  • the inner force 50 is joined by welding to the upper surface 12a of the side member 12 and the inner side surface 12d in the vehicle width direction (see FIG. 1), and is also joined to the spring house 40 by welding.
  • An upper arm support portion 52 that supports the upper arm 26 is formed in the inner force 50. As shown in FIG. 1, the upper arm support portion 52 sandwiches each end of the upper arm 26 from both sides in the front-rear direction and supports it rotatably around an axis extending in the front-rear direction.
  • the outer force 60 is a gate-shaped reinforcing member that reinforces the spring house 40, and is arranged inside the spring house 40 in the front-rear direction. That is, the outer reinforcement 60 is arranged so as to close a part of the inner opening of the spring house 40 in the vehicle width direction, and is joined by welding to each side surface 42B of the spring house 40 at both sides in the front and rear direction.
  • the outer force 60 has a pair of second leg portions 64 that are spaced apart from each other in the front-rear direction.
  • the pair of second leg portions 64 extend along the pair of first leg portions 44 of the spring house 40 and are joined to the pair of first leg portions 44 and the side surface 12b of the side member 12 by welding.
  • the pair of second legs 64 together with the pair of first legs 44 form the pair of legs 32 of the suspension tower 30 .
  • FIG. 6 is a schematic diagram showing the area around the front legs of the pair of legs 32
  • FIG. 7 is a schematic diagram showing the area around the rear legs of the pair of legs 32. Note that the outer frame 122 of the side member 12 is not shown in FIGS. 6 and 7.
  • the pair of legs 32 is formed by the pair of first legs 44 of the spring house 40 and the pair of second legs 64 of the outer force 60.
  • the pair of first legs 44 of the spring house 40 include a first front leg 44A located on the front side in the front-rear direction, and a first rear leg part located on the rear side in the front-rear direction. 44B.
  • a flange portion 46 is formed at the lower end portion 441 of each first leg portion 44 .
  • the flange portions 46 include a front flange portion 46A that protrudes forward from the lower end 441 of the first front leg portion 44A, and a rear flange portion 46B that protrudes rearward from the lower end 441 of the first rear leg portion 44B. and has.
  • the pair of second legs 64 of the outer force 60 includes a second front leg 64A located on the front side in the front-back direction and a second rear leg 64B located on the rear side in the front-back direction.
  • the second front leg portion 64A abuts on the rear side portion of the first front leg portion 44A in the front-rear direction, and is joined to the abutting portion by welding.
  • the second rear leg portion 64B abuts against the front portion of the first rear leg portion 44B of the spring house 40 in the front-rear direction, and is joined to the abutting portion by welding.
  • the first front leg 44A and the second front leg 64A form the front leg 32A of the pair of legs 32
  • the first rear leg 44B and the second rear leg 64B form the rear legs of the pair of legs 32.
  • a portion 32B is formed.
  • each second leg portion 64 is formed to have a shorter length in the front-rear direction than other portions in the up-down direction, and a tapered shape is formed between the lower end portion 641 and the other portion. ing. Thereby, the joint portion between each second leg portion 64 and the side surface 12b (see FIG. 5) of the side member 12 can be lengthened. Further, as shown in FIGS. 6 and 7, the lower end 642 of each second leg 64 extends below the lower end 442 of each first leg 44. As shown in FIGS. More specifically, the lower end 642 of each second leg 64 extends to the lower end 124 of the side surface 12b of the side member 12 (see FIGS. 2, 4, and 5). As shown in FIG. 2, the lower end portion 124 of the side surface 12b is formed in a curved manner, so that it is a harder portion than the flat portion extending above the lower end portion 124 of the side surface 12b.
  • the pair of leg portions 32 configured as described above are joined to the side surface 12b of the side member 12 by welding. More specifically, as shown by the thick solid line in FIG. be welded. Similarly, as shown by the thick solid line in FIG. be welded to. At this time, a portion of the peripheral edge of each flange portion 46 is also welded to the side member 12. In this embodiment, terminal ends 72 and 82 of the welded portions are provided slightly closer to the front than the ends of each flange portion 46 in the front-rear direction.
  • the pair of reinforcements 15 are arranged one at a time at positions corresponding to the pair of legs 32 of the suspension tower 30.
  • the first reinforcement 15A is arranged at a position overlapping the front leg portion 32A when viewed from the vehicle width direction. More specifically, the first reinforcement 15A is arranged to intersect with an intermediate portion in the front-rear direction of the front flange portion 46A formed at the lower end portion 441 of the first front leg portion 44A when viewed from the vehicle width direction. .
  • the first reinforcement 15A intersects (overlaps) the midway portion 71 located rearward of the terminal end 72 of the joint portion 70 between the front flange portion 46A and the side member 12 when viewed from the vehicle width direction. become.
  • the second reinforcement 15B is arranged at a position overlapping the rear leg portion 32B when viewed from the vehicle width direction. More specifically, as shown in FIG. 7, the second reinforcement 15B is connected to an intermediate portion in the front-rear direction of the rear flange portion 46B formed at the lower end portion 441 of the first rear leg portion 44B, and from the vehicle width direction. They are arranged so that they intersect when viewed. As a result, the second reinforcement 15B intersects (overlaps) the midway portion 81 located rearward of the terminal end 82 of the joint portion 80 between the rear flange portion 46B and the side member 12 when viewed from the vehicle width direction. It turns out.
  • the vehicle body structure 1 includes a side member 12 extending in the front-rear direction (vehicle front-rear direction) and a pair of legs 32 formed at intervals in the front-rear direction.
  • the suspension tower 30 is joined to the side surface 12b and supports the top of the shock absorber 28, and the reinforcement 15 is disposed inside the side member 12 at a position corresponding to the pair of legs 32 and reinforces the side member 12.
  • the reinforcement 15 intersects the side surface of the side member 12 in its surface direction, and the pair of legs 32 and the reinforcement 15 are arranged at positions overlapping when viewed from the vehicle width direction.
  • the reinforcement 15 that reinforces the side member 12 and the pair of legs 32 of the suspension tower 30 are arranged at a position where they overlap when viewed from the vehicle width direction, so that the structure around the pair of legs 32, That is, the rigidity of the side member 12 and the pair of legs 32 itself can be improved.
  • the vehicle body structure 1 it is possible to satisfactorily ensure the durability around the joints 70 and 80 between the suspension tower 30 and the side member 12 and the rigidity of the suspension tower.
  • the reinforcement 15 is arranged at a position overlapping the lower end portions 441 and 641 (in the embodiment, the flange portion 46) of the corresponding pair of leg portions 32 when viewed from the vehicle width direction.
  • This configuration improves the rigidity of the structure around the lower ends 441 and 641 of the pair of legs 32, which are located away from the positions that support the shock absorber 28 and the upper arm 26 and where relatively large stress tends to occur. , deformation can be suppressed. As a result, it becomes possible to better ensure the durability around the joints 70 and 80 between the suspension tower 30 and the side member 12 and the rigidity of the suspension tower.
  • the reinforcement 15 is arranged at a position overlapping the joint portions 70 and 80 between the corresponding pair of leg portions 32 and the side surface 12b of the side member 12 when viewed from the vehicle width direction.
  • the rigidity of the structure at the joints 70 and 80 between the pair of leg portions 32 and the side surface 12b of the side member 12 can be improved, and deformation can be suppressed.
  • the pair of leg portions 32 extend in the front-rear direction, and a flange portion 46 that is joined to the side surface 12b of the side member 12 at least a portion of the peripheral edge portion is formed at the lower end portions 441, 641, and the reinforcement 15 is , are arranged at positions overlapping with the flange portions 46 of the corresponding pair of leg portions 32 when viewed from the vehicle width direction.
  • the length of the joint parts 70 and 80 between the pair of leg parts 32 and the side member 12 is secured by the flange part 46, and the flange part 46 and the reinforcement 15 can be overlapped when viewed from the vehicle width direction.
  • the rigidity of the structure around the flange portion 46 can be improved and deformation can be suppressed.
  • the reinforcement 15 overlaps midway portions 71 and 81 in the longitudinal direction of the joint portions 70 and 80 between the flange portions 46 of the corresponding pair of leg portions 32 and the side surfaces 12b of the side members 12 when viewed from the vehicle width direction. placed in position.
  • the intermediate portions 71, 81 are provided on the front side of the terminal ends 72, 82 of the joint portions 70, 80 with a portion that overlaps with the reinforcement 15 when viewed from the vehicle width direction, the intermediate portions 71, 81 are The rigidity can be improved and the intermediate portions 71 and 81 can handle the force. As a result, it is possible to reduce the force applied to the terminal ends 72, 82 of the joint parts 70, 80, where stress tends to concentrate, and to effectively prevent the terminal ends 72, 82 of the joints 70, 80 from peeling off.
  • the reinforcements 15 are arranged at positions corresponding to the pair of legs 32, respectively. With this configuration, the reinforcements 15 are arranged in correspondence with each pair of leg portions 32, so that the durability around the joint between the suspension tower 30 and the side member 12 and the rigidity of the suspension tower 30 can be better ensured. becomes possible.
  • the suspension tower 30 also includes a spring house 40 that supports the top 28a of the shock absorber 28, and an outer reinforcement 60 that is joined to the inside of the spring house 40 and reinforces the spring house 40.
  • the outer force 60 has a pair of first legs 44 that are spaced apart from each other in the front-rear direction, and the outer force 60 has a pair of first legs 44 that are spaced apart from each other in the front-rear direction.
  • the reinforcement 15 has a pair of second leg portions 64 constituting the portion 32, and the reinforcement 15 is arranged at a position overlapping the first leg portion 44 of the corresponding pair of leg portions 32 when viewed from the vehicle width direction.
  • the spring house 40 is reinforced by the outer reinforcement 60, and the first leg 44 and the reinforcement 15 are overlapped when viewed from the vehicle width direction, thereby increasing the rigidity of the structure around the pair of legs 32. can be improved. Further, the force applied to the suspension tower 30 can be sufficiently borne on the first leg portion 44 side.
  • the lower end 642 of the second leg portion 64 is located below the lower end 442 of the first leg portion 44.
  • the lower end 642 of the second leg portion 64 extends to the lower end portion 124 of the side surface 12b of the side member 12. With this configuration, the length of the joint between the second leg portion 64 and the side surface 12b of the side member 12 can be further ensured. Further, since the second leg portion 64 extends to the lower end portion 124 of the side surface 12b of the side member 12, which is a portion that is relatively hard and difficult to deform, the second leg portion 64 is extended as the side surface 12b of the side member 12 deforms. Separation of the area around the lower end 642 from the side member 12 can be effectively suppressed.
  • the reinforcement 15 is joined to an inner wall 123b of the side member 12b, an inner wall 123a of the upper surface 12a, and an inner wall 123c of the lower surface 12c. With this configuration, the reinforcement 15 can be more firmly joined to the side member 12.
  • the reinforcement 15 includes a first reinforcement 15A having a flat plate shape disposed on the front side in the longitudinal direction, and a second reinforcement 15B having an L-shaped vertical cross section and disposed on the rear side in the longitudinal direction. With this configuration, sufficient rigidity and strength of the reinforcement 15 can be ensured.
  • the vehicle body structure 1 has been described using the suspension device 20 for supporting the front wheels of the vehicle as an example, but the vehicle body structure 1 may also be applied to the suspension device 20 for supporting the rear wheels. .
  • the reinforcement 15 is arranged so as to correspond to both of the pair of legs 32, but the reinforcement 15 is arranged so as to correspond only to at least one of the pair of legs 32. may be placed inside.
  • the joint 70 at the lower end 441 of the first front leg 44A, the joint 80 at the lower end 641 of the first rear leg 44B, and the reinforcement 15 are It is assumed that they overlap when viewed from the vehicle width direction.
  • the placement position of the reinforcement 15 is not limited to this as long as it can improve the rigidity of the structure around the pair of legs 32 and suppress deformation.
  • the reinforcement 15 may overlap the second leg portion 64 formed on the outer reinforcement 60 when viewed from the vehicle width direction.
  • a flange portion extending in the front-rear direction may be provided at the lower end portion 641 of the second leg portion 64.
  • the reinforcement 15 can be applied not only to the lower end portions 441 and 641 and the joint portions 70 and 80 but also to the pair of leg portions 32 as long as it can improve the rigidity of the structure around the pair of leg portions 32 and suppress deformation. It is sufficient if it overlaps any of the positions when viewed from the vehicle width direction. In that case, the extending direction and shape of the reinforcement 15 or the extending direction and shape of the front and rear portions of the pair of legs 32 may be adjusted as appropriate.
  • the pair of leg portions 32 may not have the flange portions 46.
  • the reinforcement 15 may overlap any position of the pair of legs 32 when viewed from the vehicle width direction, including the lower end portions 441 and 641 and the joint portions 70 and 80, as described above. .
  • FIG. 8 is an explanatory diagram showing a joint portion of the front leg portion 32A in a modification of the embodiment.
  • FIG. 8 like FIGS. 6 and 7, the illustration of the inner frame 121 of the side member 12 is omitted.
  • the joint portion 70 of the front flange portion 46A may be formed to extend to the lower end 442 of the first front leg portion 44A, including the end portion of the front flange portion 46A in the front-rear direction.
  • the first reinforcement 15A and the joint portion 70 overlap at two points, the upper midway portion 71 and the lower midway portion 73 of the joint portion 70 when viewed from the vehicle width direction.
  • Such a configuration also makes it possible to improve the rigidity of the structure at the joint portion 70 of the first front leg portion 44A.
  • the rear flange portion 46B may also have a configuration similar to that shown in FIG. 8.
  • the lower end 642 of the second leg portion 64 may be located above the lower end portion 124 of the side surface 12b of the side member 12, and may be located in a position vertically aligned with the lower end 442 of the first leg portion 44; It may be located above.
  • FIG. 9 is an explanatory diagram showing another example of the reinforcement 15
  • FIG. 10 is an explanatory diagram showing still another example of the reinforcement 15.
  • the first reinforcement 15A and the second reinforcement 15B are arranged apart from the inner wall 123b on the side surface 12b side of the side member 12, and are arranged on the inner wall 123a on the upper surface 12a side and the inner wall 123c on the lower surface 12c side. Joined.
  • the first reinforcement 15A and the second reinforcement 15B are arranged apart from the inner wall 123a on the upper surface 12a side and the inner wall 123c on the lower surface 12c side of the side member 12, It is joined to the inner wall 123b on the side surface 12b side and the inner wall 123d on the side surface 12d side.
  • the second reinforcement 15B has the same flat plate shape as the first reinforcement 15A.
  • the reinforcements 15 may be joined to at least the inner walls 123a to 123d of the side members 12 that face each other. With this configuration as well, the reinforcement 15 can be firmly fixed to the side member 12.
  • each reinforcement 15 is not limited to that shown in the embodiment.
  • the first reinforcement 15A may have an L-shaped vertical cross section, similar to the second reinforcement 15B shown in the embodiment.
  • the second reinforcement 15B may have a flat plate shape similarly to the first reinforcement 15A shown in the embodiment.
  • Vehicle body structure 10
  • Vehicle body frame 12 Side member 12a Top surface 12b, 12d Side surface 12c Bottom surface 15
  • Reinforcement 28 Shock absorber 28a Top portion 30

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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)
PCT/JP2022/013595 2022-03-23 2022-03-23 車体構造 Ceased WO2023181197A1 (ja)

Priority Applications (2)

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PCT/JP2022/013595 WO2023181197A1 (ja) 2022-03-23 2022-03-23 車体構造
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Applications Claiming Priority (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025224944A1 (ja) * 2024-04-25 2025-10-30 三菱自動車工業株式会社 車体構造

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017114147A (ja) * 2015-12-21 2017-06-29 マツダ株式会社 車両の前部車体構造
JP2019172121A (ja) * 2018-03-29 2019-10-10 トヨタ自動車株式会社 サスペンションタワー

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017114147A (ja) * 2015-12-21 2017-06-29 マツダ株式会社 車両の前部車体構造
JP2019172121A (ja) * 2018-03-29 2019-10-10 トヨタ自動車株式会社 サスペンションタワー

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025224944A1 (ja) * 2024-04-25 2025-10-30 三菱自動車工業株式会社 車体構造

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JPWO2023181197A1 (https=) 2023-09-28

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