WO2016076053A1 - Élément structurel de véhicule - Google Patents

Élément structurel de véhicule Download PDF

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Publication number
WO2016076053A1
WO2016076053A1 PCT/JP2015/078973 JP2015078973W WO2016076053A1 WO 2016076053 A1 WO2016076053 A1 WO 2016076053A1 JP 2015078973 W JP2015078973 W JP 2015078973W WO 2016076053 A1 WO2016076053 A1 WO 2016076053A1
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WO
WIPO (PCT)
Prior art keywords
pair
standing wall
vehicle
wall portion
forming member
Prior art date
Application number
PCT/JP2015/078973
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English (en)
Japanese (ja)
Inventor
洋康 小坂
和章 北口
Original Assignee
豊田鉄工株式会社
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.)
Filing date
Publication date
Application filed by 豊田鉄工株式会社 filed Critical 豊田鉄工株式会社
Publication of WO2016076053A1 publication Critical patent/WO2016076053A1/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
    • B62D25/04—Door pillars ; windshield 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
    • B62D25/20—Floors or bottom sub-units

Definitions

  • the present invention relates to a vehicle structural member, and more particularly to an improvement in a vehicle structural member having a hollow structure in which a hollow section forming member is integrally joined to a hat cross-section member.
  • a longitudinal shape and a cross section perpendicular to the longitudinal direction of the longitudinal shape is a hat (cap with a hook) cross-sectional shape, a first projecting wall portion, and a first projecting wall portion
  • a hat cross-section member comprising a pair of first standing wall portions bent to the same side from both ends thereof, and a pair of flange portions extending outward from the tips of the first standing wall portions, and (b) a longitudinal shape And a hollow portion forming member integrally fixed to the hat cross-section member so that a hollow portion is formed between the hat cross-section member and (c) the A vehicle structural member having a hollow structure that receives a load applied from the vehicle outer side by being disposed in the vehicle in a posture in which the first protruding wall portion protrudes outward from the vehicle and supported by both ends in the longitudinal direction.
  • FIG. 4 of Patent Document 2 describes a technique in which a hollow portion forming member (second reinforcement 4) having a U-shaped cross section is disposed inside a hat cross-section member (first reinforcement 3).
  • FIG. 4 (a) “Before deformation” is a cross-sectional view showing an example of a conventional vehicle center pillar reinforcement.
  • the vehicle center pillar reinforcement 100 is a hollow portion forming member on the opening side of the hat cross section member 102. This is a case where 104 is fixed integrally, and is welded to the flange portion 106 by spot welding or the like at a joint P indicated by “x”. And if the side collision load F is applied to the intermediate part (for example, cross-sectional part shown in FIG. 4) of this vehicle center pillar reinforcement 100 from the vehicle outer side by the side collision barrier 108, the intermediate part As shown in FIG. 4 (b) “after deformation”, the hat cross-section member 102 is subjected to a compressive stress on the first projecting wall 110 side when it is bent and deformed toward the vehicle inner side (lower side in FIG. 4). Then, the central portion of the first protruding wall portion 110 is bent inward so as to form an M-shaped cross section, and the flange portion 106 may be lifted from the hollow portion forming member 104 and the joint portion P may be broken.
  • the intermediate part for example, cross
  • the present invention has been made in the background of the above circumstances.
  • the object of the present invention is to provide a hollow structural member in which a hollow portion forming member is integrally joined to a hat sectional member.
  • An object of the present invention is to suppress the breakage of the joint portion with the hollow portion forming member so that the effect of improving the load bearing performance by the hollow portion forming member can be appropriately obtained from the initial stage of the collision.
  • the first invention has (a) a longitudinal shape, and a cross section perpendicular to the longitudinal direction of the longitudinal shape forms a hat cross-sectional shape, and the first projecting wall portion
  • a hat cross section including a pair of first standing wall portions bent to the same side from both ends of the first projecting wall portion, and a pair of flange portions respectively extending outward from the tip of the first standing wall portion
  • a hollow portion forming member that is integrally fixed to the hat cross-section member so that a hollow portion is formed between the member and (b) the hat cross-section member, and (b)
  • the first projecting wall portion is disposed on the vehicle in a posture that projects outward from the vehicle and is supported at both ends in the longitudinal direction, thereby applying a load applied from the vehicle outer side.
  • the hollow portion forming portion In the structural member for a vehicle having a hollow structure to be received, (d) the hollow portion forming portion
  • the material has a strength higher than that of the hat cross-section member, and a cross section perpendicular to the longitudinal direction forms a U-shape.
  • the second projecting wall portion and both ends of the second projecting wall portion are directed to the same side.
  • a pair of bent second standing wall portions, and (e) the first projecting wall portion and the pair of first standing wall portions enter inside the pair of second standing wall portions,
  • the hollow portion forming member is formed in a state where the hollow portion forming member is positioned on the vehicle outer side with respect to the hat cross-sectional member so that the pair of first standing wall portions and the pair of second standing wall portions overlap each other.
  • the member and the hat cross-sectional member are overlapped in the same direction, and (f) the hollow portion is formed by the second projecting wall portion, the pair of second standing wall portions, and the first projecting wall portion. And the pair of second upright walls and the pair of first uprights superimposed on each other. Parts and respectively, characterized in that it is integrally joined.
  • the vehicle structural member in the vehicle structural member according to the first aspect, is disposed on a side surface of the vehicle along the vertical direction and supported at both ends in the vertical direction. It is a vehicle center pillar reinforcement in which a center pillar outer plate is attached to the pair of flange portions.
  • a hollow part forming member having a U-shaped cross section is used, and a first projecting wall part and a pair of first parts are formed inside a pair of second standing wall parts of the hollow part forming member.
  • the second projecting wall part and the pair of second standing wall parts and the first projecting wall part are overlapped with the hollow part forming member positioned on the vehicle outer side of the hat cross-section member so that the first standing wall part enters.
  • the pair of first standing wall portions and the pair of second standing wall portions are integrally joined to each other in a state in which the hollow portion is formed, so that the hollow structure is thin while ensuring high rigidity. The weight can be reduced.
  • the joining portion has a shearing direction. A load acts, peeling is suppressed, the joining state of a joined part is maintained well, and a predetermined load bearing performance is stably obtained.
  • the hollow portion forming member having a strength higher than that of the hat cross-sectional member is disposed on the vehicle outer side, the load can be appropriately received by the hollow portion forming member from the initial stage of the collision. The effect of improving the load bearing performance due to is appropriately obtained.
  • the second invention relates to a vehicle center pillar reinforcement.
  • the present invention is suitably applied to stably obtain a load bearing performance against a side collision load, and a relatively high-strength hollow portion forming member has a hat cross section. Since the vehicle is disposed on the outer side of the vehicle than the member, it is possible to appropriately receive the side collision load and suppress the intrusion into the passenger compartment, thereby ensuring the safety performance of the passenger. Further, the center pillar outer plate is attached to the flange portion of the hat cross-section member, but the hollow portion forming member is joined to the first standing wall portion of the hat cross-section member.
  • the workability of mounting the center pillar outer plate is improved, such as improved weldability compared to the case where it is overlapped on the flange and welded at the same time, and the center pillar outer plate can be easily and appropriately welded to the flange. To do.
  • FIG. 2 is an enlarged sectional view taken along the line II-II in FIG.
  • FIG. 2 is a perspective view before a hat cross-section member and a hollow portion forming member constituting the vehicle center pillar reinforcement of FIG. 1 are overlapped and joined. It is a figure explaining the shape change at the time of the side collision load F being added to the conventional vehicle center pillar reinforcement, and is sectional drawing corresponding to FIG.
  • the present invention is suitably applied to the center pillar reinforcement for a vehicle, but can also be applied to the reinforcement of other pillars such as a front pillar and a rear pillar, or a vehicle other than the pillar reinforcement such as a bumper reinforcement or a rocker. It can also be applied to structural members.
  • the structural member for a vehicle is configured to include a hat cross-section member and a hollow portion forming member, and further, a plate-like or hat cross-section closing member that closes the opening of the hat cross-section member is fixed to the flange portion or the like. You can also
  • the pair of first standing wall portions and second standing wall portions are provided so as to be bent substantially at right angles from the first projecting wall portion or the second projecting wall portion and extend substantially in parallel. It is also possible to incline in the expanding direction so as to be wide. Spot welding is suitable as a joining means for integrally joining the first standing wall portion and the second standing wall portion, but other welding means such as laser welding and arc welding, or various means such as rivets and caulking. Can be adopted.
  • the hat cross-section member and the hollow portion forming member can have substantially the same cross-sectional shape over the entire length in the longitudinal direction depending on the type of the structural member for vehicles, but only the intermediate portion in the longitudinal direction has the structure of the present invention.
  • first projecting wall portion and the second projecting wall portion can be brought into close contact with each other at both ends, or the hollow portion forming member can be Various modes are possible, such as providing only part of the direction.
  • the hollow portion forming member is made of an ultra-high strength steel plate having a higher strength than the hat cross-section member, for example, a tensile strength of about 980 MPa or more.
  • the high-strength hollow portion forming member not only uses a steel plate having a high tensile strength, but can also be increased in strength by increasing the plate thickness.
  • a high-tensile steel plate having a tensile strength of about 440 MPa or more is preferably used as the hat cross-section member.
  • first standing wall portion and the second standing wall portion be overlapped in parallel so as to be in close contact with each other. You may make it mutually adhere when joining by a joining means. If the tip of the second standing wall portion (the edge opposite to the second protruding wall portion) reaches the corner portion of the first standing wall portion and the flange portion, the hollow portion forming member and the hat cross-section member Alignment at the time of stacking is facilitated, and part of the load applied to the hollow part forming member can be received by the corner part, reducing the burden on the joint part and maintaining the joint state better. Is done.
  • FIG. 1 is a view showing a center pillar reinforcement 10 for a vehicle according to an embodiment of the present invention, and is a front view seen from the vehicle inner side.
  • FIG. 2 is a view taken along the line II-II in FIG. That is, it is an enlarged cross-sectional view cut in a horizontal direction substantially perpendicular to the longitudinal direction at an intermediate portion of the vehicle center pillar reinforcement 10 disposed in the vertical direction of the vehicle.
  • FIG. 3 is a perspective view showing the two members constituting the vehicle center pillar reinforcement 10 separately. Specifically, the hat cross-section member 12 and the hollow portion forming member 14 before joining are individually shown. It is the shown perspective view.
  • the vehicle center pillar reinforcement 10 is configured by overlapping and integrally joining the hollow portion forming member 14 on the convex side of the hat cross-section member 12.
  • the vehicle center pillar reinforcement 10 is disposed on the right side of the vehicle along the vertical direction, and both the upper and lower ends are fixed and supported on a roof side rail, a side sill, etc. This is for receiving the side impact load applied from the vehicle and ensuring the safety performance of the passengers in the passenger compartment, and corresponds to a vehicle structural member.
  • the hat cross-section member 12 has a longitudinal shape, and a cross section perpendicular to the longitudinal direction of the longitudinal shape, that is, a substantially horizontal cross section shown in FIG. From the projecting first projecting wall portion 20, a pair of first standing wall portions 22 bent inward from the both ends of the first projecting wall portion 20, and from the tip of the first standing wall portion 22 A pair of flange portions 24 each extending outward, that is, in the vehicle front-rear direction, are provided. The pair of first standing wall portions 22 are bent from both ends of the first projecting wall portion 20 at a bending angle of approximately 90 °, but slightly so as to expand as they are separated from the first projecting wall portion 20. It is inclined outward.
  • the hollow portion forming member 14 has a longitudinal shape and a U-shape in which a cross section perpendicular to the longitudinal direction of the longitudinal shape, that is, a substantially horizontal cross section shown in FIG. And a pair of second standing wall portions 32 bent toward the vehicle inward side from both ends of the second protruding wall portion 30.
  • the pair of second standing wall portions 32 are bent from both ends of the second projecting wall portion 30 at a bending angle of approximately 90 °, respectively, but, like the first standing wall portion 22, the second projecting wall portion 30. It is slightly inclined outward so as to expand as it moves away from the center.
  • the hat cross-section member 12 is lower in strength than the hollow portion forming member 14, and is composed of, for example, a high-tensile steel plate having a tensile strength of 440 MPa or more, and a plate thickness of 2 mm or less, which is relatively thin. Manufactured mainly in bending and drawing.
  • the hollow portion forming member 12 is composed of, for example, an ultra-high-tensile steel plate having a tensile strength of about 1180 MPa or more, and the plate thickness is thicker than the plate thickness of the hat cross-sectional member 12 and has a hardenability. Manufactured mainly by bending and drawing by hot pressing using a steel sheet for pressing.
  • the hat cross-section member 12 and the hollow portion forming member 14 have openings in the hat cross section and the U-shaped cross section so that the pair of first standing wall portions 22 and the pair of second standing wall portions 32 overlap each other substantially in parallel. They are superposed in the same posture with the side facing toward the inside of the vehicle and are integrally joined to each other. Specifically, the hollow portion forming member 14 is more out of the vehicle than the hat cross-section member 12 so that the first protruding wall portion 20 and the pair of first standing wall portions 22 enter inside the pair of second standing wall portions 32. In a state of being located on the side, the hat cross-section member 12 is inserted into the hollow portion forming member 14 from the first projecting wall portion 20 side and overlapped.
  • the length of the second standing wall portion 32 that is, the protruding height dimension of the hollow portion forming member 14 is about twice the length of the first standing wall portion 22, that is, the protruding height dimension of the hat cross-section member 12.
  • the wall portion 20 is positioned at a height that is about half of the overall projecting height dimension of the vehicle center pillar reinforcement 10 (within a range of about 40% to 60%), and has a sufficiently large hollow portion 34. Is secured. Then, in this state, the pair of first standing wall portions 22 and the pair of second standing wall portions 32 that are overlapped so as to be in close contact with each other are connected to each other by a joining portion P1 indicated by “x” in FIG. Thus, the vehicle center pillar reinforcement 10 is obtained.
  • the overlapping height dimension of the first standing wall portion 22 and the second standing wall portion 32 is suitably 10 mm or more, and in this embodiment is about 13 mm to 17 mm, and the bonding portion P1. Are set at predetermined intervals in the longitudinal direction of the vehicle center pillar reinforcement 10.
  • Such a vehicle center pillar reinforcement 10 is disposed along the vertical direction on the right side portion of the vehicle with the first projecting wall portion 20 and the second projecting wall portion 30 projecting outward from the vehicle. .
  • a center pillar outer plate 40 having a hat cross-sectional shape that is slightly larger than the hollow portion forming member 14 is disposed so as to cover the hollow portion forming member 14, as shown by a one-dot chain line in FIG.
  • the flange portions on both sides are integrally welded to the pair of flange portions 24 of the hat cross-section member 12 by spot welding or the like.
  • a joint P ⁇ b> 2 indicated by “x” in FIG. 2 is a welded portion between the center pillar outer plate 40 and the flange portion 24.
  • the hollow portion forming member 14 having a U-shaped cross section is used, and inside the pair of second standing wall portions 32 of the hollow portion forming member 14.
  • the first protruding wall portion 20 and the pair of first standing wall portions 22 are overlapped so that the hollow portion forming member 14 is positioned on the vehicle outer side with respect to the hat cross-section member 12, and the second protruding wall portion 30.
  • the pair of first standing wall portions 22 and the pair of second standing wall portions 32 are integrally formed in a state where the hollow portion 34 is formed by the pair of second standing wall portions 32 and the first protruding wall portion 20. Therefore, it is possible to reduce the weight by reducing the thickness while securing high rigidity by the hollow structure.
  • the side collision barrier F since the pair of first standing wall portions 22 and the pair of second standing wall portions 32 are integrally joined at the joint portion P1, the side collision barrier F generates a side collision load F from the outside of the vehicle.
  • a load in the shearing direction acts on the joint P1
  • peeling is suppressed
  • the joined state of the joint P1 is maintained well, and the predetermined load bearing performance is stable. can get.
  • the hollow portion forming member 14 having higher strength than the hat cross-section member 12 is disposed on the vehicle outer side, the side portion collision load F is appropriately received by the hollow portion forming member 14 from the initial stage of the collision.
  • the effect of improving the load bearing performance by the hollow portion forming member 14 can be appropriately obtained, for example, the intrusion into the vehicle interior can be suppressed and the safety performance of the passenger can be appropriately ensured.
  • center pillar outer plate 40 is attached to the flange portion 24 of the hat cross-section member 12, but the hollow portion forming member 14 is joined to the first standing wall portion 22 of the hat cross-section member 12. Compared to the case where the hollow portion forming member is overlapped with the flange portion 24 and welded at the same time, the weldability is improved, and the center pillar outer plate 40 can be easily and appropriately welded to the flange portion 24. Mounting workability of the outer plate 40 is improved.
  • the hat cross-section member 12 and the hollow portion forming member 14 are overlapped in a state where the tip of the second standing wall portion 32 reaches the corner portion between the first standing wall portion 22 and the flange portion 24. Since the hat cross-section member 12 and the hollow portion forming member 14 are superposed on each other, it is easy to align them, and the side collision load F applied to the hollow portion forming member 14 is reduced. Since a part is received by the corner portion, the burden on the joint portion P1 is reduced, and the joining state is maintained better.
  • Vehicle center pillar reinforcement (vehicle structural member) 12: Hat cross-section member 14: Hollow portion forming member 20: First protruding wall portion 22: First standing wall portion 24: Flange portion 30: Second protruding wall portion 32: Second standing wall part 34: Hollow part 40: Center pillar outer plate F: Side impact load P1: Joint part

Abstract

L'invention concerne un élément structurel de véhicule à structure creuse qui comporte un élément de section de chapeau ayant un élément de formation de partie creuse relié à celui-ci, une fracturation dans une partie de joint étant supprimée de telle sorte que l'effet, obtenu par l'élément de formation de partie creuse et qui consiste à améliorer l'efficacité de support de charge, peut être obtenu dès la période initiale de collision. Une première partie de paroi verticale 22 et une seconde partie de paroi verticale 32 sont reliées en une seule pièce de telle sorte que, lors de l'application d'une charge de collision latérale F, une charge de direction de cisaillement agit pour supprimer un décollement. Par conséquent, un bon état de joint d'une partie de joint P1 peut être maintenu et une efficacité de support de charge prédéterminée peut être obtenue de façon stable. En outre, un élément de formation de partie creuse 14, ayant une résistance supérieure à l'élément de section de chapeau 12, est disposé sur un côté externe de véhicule, la charge de collision latérale F pouvant être reçue de façon appropriée par l'élément de formation de partie creuse 14 dès la période initiale de collision. Par conséquent, une pénétration dans l'habitacle peut être supprimée, ce qui assure de façon appropriée la sécurité des passagers.
PCT/JP2015/078973 2014-11-13 2015-10-13 Élément structurel de véhicule WO2016076053A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014230424A JP6177751B2 (ja) 2014-11-13 2014-11-13 車両用構造部材
JP2014-230424 2014-11-13

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WO2016076053A1 true WO2016076053A1 (fr) 2016-05-19

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WO (1) WO2016076053A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6559638B2 (ja) * 2016-10-26 2019-08-14 豊田鉄工株式会社 車両用構造部材

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10310082A (ja) * 1997-05-12 1998-11-24 Kanto Auto Works Ltd 自動車車体のサイドメンバ
JP2001278112A (ja) * 2000-03-30 2001-10-10 Fuji Heavy Ind Ltd 車両のピラー部補強構造
JP2001294178A (ja) * 2000-04-17 2001-10-23 Suzuki Motor Corp 車体側部の構造
JP2002284043A (ja) * 2001-03-28 2002-10-03 Mitsubishi Motors Corp 車体構造

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10310082A (ja) * 1997-05-12 1998-11-24 Kanto Auto Works Ltd 自動車車体のサイドメンバ
JP2001278112A (ja) * 2000-03-30 2001-10-10 Fuji Heavy Ind Ltd 車両のピラー部補強構造
JP2001294178A (ja) * 2000-04-17 2001-10-23 Suzuki Motor Corp 車体側部の構造
JP2002284043A (ja) * 2001-03-28 2002-10-03 Mitsubishi Motors Corp 車体構造

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JP6177751B2 (ja) 2017-08-09
JP2016094063A (ja) 2016-05-26

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