JP7099552B2 - Structural members and body structure - Google Patents

Structural members and body structure Download PDF

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JP7099552B2
JP7099552B2 JP2020567716A JP2020567716A JP7099552B2 JP 7099552 B2 JP7099552 B2 JP 7099552B2 JP 2020567716 A JP2020567716 A JP 2020567716A JP 2020567716 A JP2020567716 A JP 2020567716A JP 7099552 B2 JP7099552 B2 JP 7099552B2
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wall
structural member
groove portion
groove
closed cross
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JPWO2020153473A1 (en
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豊 三日月
匡浩 中田
拓哉 大石
蒼馬 園部
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Nippon Steel Corp
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Nippon Steel Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F7/00—Vibration-dampers; Shock-absorbers
    • F16F7/12—Vibration-dampers; Shock-absorbers using plastic deformation of members

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

Description

本開示は、構造部材及び車体構造に関する。 The present disclosure relates to structural members and vehicle body structures.

従来の構造部材及び車体構造においては、安全性の向上のため、衝突時の衝撃吸収特性をさらに向上させることが求められる。特に、自動車の側面衝突時には、サイドシル等の車両側部に配置された構造部材が、塑性変形し、衝撃を吸収する。 In the conventional structural members and vehicle body structures, in order to improve safety, it is required to further improve the impact absorption characteristics at the time of collision. In particular, at the time of a side collision of an automobile, structural members arranged on the side of the vehicle such as a side sill are plastically deformed to absorb an impact.

下記特許文献１にはサイドシルの閉断面内に補強部材、ガイド棒およびダンパーといった複数の機構または部材を組み合わせて配置し、衝撃吸収性能を高める技術が開示されている。 The following Patent Document 1 discloses a technique for enhancing shock absorption performance by arranging a plurality of mechanisms or members such as a reinforcing member, a guide rod and a damper in combination in a closed cross section of a side sill.

特開平１０－２３０８７０号公報Japanese Unexamined Patent Publication No. 10-230870

しかし、上記特許文献１に記載の技術では、複数の機構または部材を組み合わせた結果、構造が複雑になり、重量も増大するという問題があった。また、上記特許文献１の技術では、衝撃吸収特性の中でも塑性変形時の構造部材の車体内部への侵入量を抑制することについては考慮されていなかった。 However, the technique described in Patent Document 1 has a problem that the structure becomes complicated and the weight increases as a result of combining a plurality of mechanisms or members. Further, in the technique of Patent Document 1, among the impact absorption characteristics, it is not considered to suppress the amount of the structural member invading the inside of the vehicle body at the time of plastic deformation.

そこで、本開示は、上記問題に鑑みてなされたものであり、本開示の目的とするところは、複雑な機構部材を必要とせず、高い質量効率を実現しながら、構造部材における要求特性の一つである衝撃吸収性能をさらに向上させることが可能な、新規かつ改良された構造部材および車体構造を提供することにある。 Therefore, the present disclosure has been made in view of the above problems, and the purpose of the present disclosure is one of the required characteristics of the structural member while realizing high mass efficiency without requiring a complicated mechanical member. It is an object of the present invention to provide new and improved structural members and vehicle body structures capable of further improving the impact absorption performance.

上記課題を解決するために、本開示のある観点によれば、閉断面部と、前記閉断面部の内部に第１の壁と第２の壁を備え、前記閉断面部は、第１の面と第２の面を備え、前記第１の面と前記第２の面は、対向し、前記第１の壁と前記第２の壁は、前記第２の面から前記第１の面に向かって延在し、前記第１の壁と前記第２の壁は、前記閉断面部の軸方向に延在し、前記第１の壁は、前記第２の壁に向かって突出した、前記軸方向に延在する第１の溝部を備え、前記第２の壁は、前記第１の壁に向かって突出した、前記軸方向に延在する第２の溝部を備え、前記第１の壁の前記第１の面側の端部と前記第２の壁の前記第１の面側の端部は、連結部を介して繋がっていて、前記第１の壁の前記第２の面側の端部と前記第２の壁の前記第２の面側の端部は、それぞれ前記第２の面と繋がっていて、板形状の補強部材をさらに備え、前記補強部材は、前記第１の溝部と前記第２の溝部の間に配置され、前記補強部材の第１面と前記第１の溝部を接合している第１の接合部を備え、前記補強部材の第２面と前記第２の溝部を接合している第２の接合部を備える、構造部材が提供される。
また、本開示の別の観点によれば、閉断面部と、前記閉断面部の内部に第１の壁と第２の壁を備え、前記閉断面部は、第１の面と第２の面と第３の面と第４の面とを備え、前記第１の面と前記第２の面は、対向し、前記第３の面と前記第４の面は、対向し、前記第３の面と前記第４の面は、前記第２の面から前記第１の面に向かって延在し、前記第１の壁と前記第２の壁は、前記第２の面から前記第１の面に向かって延在し、前記第１の壁と前記第２の壁は、前記閉断面部の軸方向に延在し、前記第１の壁は、前記第２の壁に向かって突出した、前記軸方向に延在する第１の溝部を備え、前記第２の壁は、前記第１の壁に向かって突出した、前記軸方向に延在する第２の溝部を備え、前記第１の壁の前記第１の面側の端部と前記第２の壁の前記第１の面側の端部は、連結部を介して繋がっていて、前記第１の壁の前記第２の面側の端部に連続している第１のフランジを備え、前記第２の壁の前記第２の面側の端部に連続している第２のフランジを備え、前記第１のフランジと前記第２のフランジは、それぞれ前記第２の面と接合し、前記第１の壁と前記第２の壁は、それぞれ前記第３の面および前記第４の面に接していない、構造部材が提供される。
また、本開示の別の観点によれば、閉断面部と、前記閉断面部の内部に第１の壁と第２の壁を備え、前記閉断面部は、第１の面と第２の面を備え、前記第１の面と前記第２の面は、対向し、前記第１の壁と前記第２の壁は、前記第２の面から前記第１の面に向かって延在し、前記第１の壁と前記第２の壁は、前記閉断面部の軸方向に延在し、前記第１の壁は、前記第２の壁に向かって突出した、前記軸方向に延在する第１の溝部を備え、前記第２の壁は、前記第１の壁に向かって突出した、前記軸方向に延在する第２の溝部を備え、前記第１の壁の前記第１の面側の端部と前記第２の壁の前記第１の面側の端部は、連結部を介して繋がっていて、前記連結部は、前記第１の面に平行な面であり、前記第１の壁の前記第２の面側の端部に連続している第１のフランジを備え、前記第２の壁の前記第２の面側の端部に連続している第２のフランジを備え、前記第１のフランジと前記第２のフランジは、それぞれ前記第２の面と接合している、構造部材が提供される。
また、本開示の別の観点によれば、閉断面部と、前記閉断面部の内部に第１の壁と第２の壁を備え、前記閉断面部は、第１の面と第２の面を備え、前記第１の面と前記第２の面は、対向し、前記第１の壁と前記第２の壁は、前記第２の面から前記第１の面に向かって延在し、前記第１の壁と前記第２の壁は、前記閉断面部の軸方向に延在し、前記第１の壁は、前記第２の壁に向かって突出した、前記軸方向に延在する第１の溝部を備え、前記第２の壁は、前記第１の壁に向かって突出した、前記軸方向に延在する第２の溝部を備え、前記第１の壁の前記第１の面側の端部と前記第２の壁の前記第１の面側の端部は、連結部を介して繋がっていて、前記第１の壁の前記第２の面側の端部と前記第２の壁の前記第２の面側の端部は、それぞれ前記第２の面と繋がっていて、前記連結部は、前記第１の面に平行な面であり、補強部材を備え、前記補強部材は、前記第１の溝部と前記第２の溝部の間に配置され、前記補強部材は、前記第１の溝部に接合される、構造部材が提供される。 In order to solve the above problems, according to a certain aspect of the present disclosure, a closed cross section and a first wall and a second wall are provided inside the closed cross section, and the closed cross section is a first. A surface and a second surface are provided, the first surface and the second surface face each other, and the first wall and the second wall are transferred from the second surface to the first surface. The first wall and the second wall extend in the axial direction of the closed cross section, and the first wall protrudes toward the second wall. The second wall comprises a first groove extending axially and the second wall comprises a second groove extending axially extending towards the first wall and the first wall. The end on the first surface side of the first wall and the end on the first surface side of the second wall are connected via a connecting portion, and the end of the first wall on the second surface side. The end portion and the end portion of the second wall on the second surface side are connected to the second surface, respectively, and further include a plate-shaped reinforcing member, and the reinforcing member is the first groove portion. The second surface of the reinforcing member and the second surface of the reinforcing member are provided with a first joint portion which is arranged between the second surface and the second groove portion and joins the first surface of the reinforcing member and the first groove portion. A structural member is provided that comprises a second joint that joins the grooves.
Further, according to another aspect of the present disclosure, a closed cross section and a first wall and a second wall are provided inside the closed cross section, and the closed cross section is a first surface and a second. A surface, a third surface, and a fourth surface are provided, the first surface and the second surface face each other, and the third surface and the fourth surface face each other, and the third surface is opposed to each other. The surface and the fourth surface extend from the second surface toward the first surface, and the first wall and the second wall are from the second surface to the first surface. The first wall and the second wall extend in the axial direction of the closed cross section, and the first wall protrudes toward the second wall. The second wall comprises a first groove extending in the axial direction, and the second wall includes a second groove extending in the axial direction protruding toward the first wall. The first surface-side end of the wall 1 and the first surface-side end of the second wall are connected via a connecting portion, and the second of the first wall is connected. A first flange that is continuous with the end of the face side and a second flange that is continuous with the end of the second wall on the second face side is provided with the first flange. The second flange is joined to the second surface, respectively, and the first wall and the second wall are not in contact with the third surface and the fourth surface, respectively. Provided.
Further, according to another aspect of the present disclosure, a closed cross section and a first wall and a second wall are provided inside the closed cross section, and the closed cross section is a first surface and a second. The first surface and the second surface face each other, and the first wall and the second wall extend from the second surface toward the first surface. The first wall and the second wall extend in the axial direction of the closed cross section, and the first wall extends in the axial direction so as to project toward the second wall. The second wall comprises a second groove extending axially, projecting toward the first wall, and the first of the first walls. The end portion on the surface side and the end portion on the first surface side of the second wall are connected via a connecting portion, and the connecting portion is a surface parallel to the first surface. A second flange provided with a first flange continuous with the second face-side end of the first wall and continuous with the second face-side end of the second wall. A structural member is provided in which the first flange and the second flange are joined to the second surface, respectively.
Further, according to another aspect of the present disclosure, a closed cross section and a first wall and a second wall are provided inside the closed cross section, and the closed cross section is a first surface and a second. The first surface and the second surface face each other, and the first wall and the second wall extend from the second surface toward the first surface. The first wall and the second wall extend in the axial direction of the closed cross section, and the first wall extends in the axial direction so as to project toward the second wall. The second wall comprises a second groove extending axially, projecting toward the first wall, and the first of the first walls. The end portion on the surface side and the end portion on the first surface side of the second wall are connected via a connecting portion, and the end portion on the second surface side of the first wall and the first portion. The end of the second wall on the second surface side is connected to the second surface, respectively, and the connecting portion is a surface parallel to the first surface, and is provided with a reinforcing member to reinforce the wall. The member is arranged between the first groove portion and the second groove portion, and the reinforcing member is provided with a structural member to be joined to the first groove portion.

また、上記課題を解決するために、本開示の別の観点によれば、上記の構造部材を備え、前記第１の面が車外側に配置され、前記第２の面が車内側に配置されている、車体構造が提供される。 Further, in order to solve the above problems, according to another aspect of the present disclosure, the structural member is provided, the first surface is arranged on the outside of the vehicle, and the second surface is arranged on the inside of the vehicle. The body structure is provided.

以上説明したように本開示によれば、衝撃吸収性能をさらに向上させることが可能な、新規かつ改良された構造部材および車体構造が提供される。 As described above, the present disclosure provides new and improved structural members and vehicle body structures capable of further improving impact absorption performance.

第１の実施形態に係る構造部材とその周辺構造の一例を示す斜視図である。It is a perspective view which shows an example of the structural member which concerns on 1st Embodiment and its peripheral structure. 同実施形態に係る構造部材の断面構造の一例を示す、図１におけるＩ－Ｉ’断面図である。FIG. 3 is a sectional view taken along the line I-I'in FIG. 1 showing an example of a sectional structure of a structural member according to the same embodiment. 同実施形態に係る構造部材の断面構造の一例を示す、図１におけるＩ－Ｉ’断面図である。FIG. 3 is a sectional view taken along the line I-I'in FIG. 1 showing an example of a sectional structure of a structural member according to the same embodiment. 同実施形態に係る構造部材の断面構造の一例を示す、図１におけるＩ－Ｉ’断面図である。FIG. 3 is a sectional view taken along the line I-I'in FIG. 1 showing an example of a sectional structure of a structural member according to the same embodiment. 同実施形態に係る構造部材に荷重がかかったときの変形の様子を模式的に示す図である。It is a figure which shows the state of deformation when the load is applied to the structural member which concerns on the same embodiment. 同実施形態に係る構造部材に荷重がかかったときの変形の様子を模式的に示す図である。It is a figure which shows the state of deformation when the load is applied to the structural member which concerns on the same embodiment. 同実施形態に係る構造部材の一の変形例を示す断面図である。It is sectional drawing which shows the modification of one of the structural members which concerns on the same embodiment. 第２の実施形態に係る構造部材とその周辺構造の一例を示す斜視図である。It is a perspective view which shows an example of the structural member and its peripheral structure which concerns on 2nd Embodiment. 同実施形態に係る構造部材の断面構造の一例を示す、図７におけるＩＩ－ＩＩ’端面図である。FIG. 7 is an end view of II-II'in FIG. 7, showing an example of a cross-sectional structure of a structural member according to the same embodiment. 同実施形態に係る構造部材の断面構造の一例を示す、図７におけるＩＩＩ－ＩＩＩ’端面図である。FIG. 7 is an end view of III-III'in FIG. 7, showing an example of a cross-sectional structure of a structural member according to the same embodiment. 同実施形態に係る構造部材に荷重がかかったときの変形の様子を模式的に示す図である。It is a figure which shows the state of deformation when the load is applied to the structural member which concerns on the same embodiment. 第３の実施形態に係る構造部材の軸方向に垂直な断面構造の一例を示す図である。It is a figure which shows an example of the cross-sectional structure perpendicular to the axial direction of the structural member which concerns on 3rd Embodiment. 同実施形態に係る構造部材の断面構造の一例を示す、図１１におけるＩＶ－ＩＶ’端面図である。FIG. 11 is an IV-IV'end view in FIG. 11 showing an example of a cross-sectional structure of a structural member according to the same embodiment. シミュレーション解析の条件の一例を説明するための図である。It is a figure for demonstrating an example of the condition of simulation analysis. シミュレーション解析の条件の一例を説明するための図である。It is a figure for demonstrating an example of the condition of simulation analysis. ３点曲げシミュレーションにおける構造部材のポール変位と背面侵入量比の関係を示すグラフである。It is a graph which shows the relationship between the pole displacement of a structural member, and the back penetration amount ratio in a three-point bending simulation. ３点曲げシミュレーションにおける構造部材のポール変位と荷重比の関係を示すグラフである。It is a graph which shows the relationship between the pole displacement of a structural member and a load ratio in a three-point bending simulation. 構造部材の軸方向に垂直な断面構造の一例を示す図である。It is a figure which shows an example of the cross-sectional structure perpendicular to the axial direction of a structural member. 構造部材の軸方向に垂直な断面構造の一例を示す図である。It is a figure which shows an example of the cross-sectional structure perpendicular to the axial direction of a structural member. 構造部材の軸方向に垂直な断面構造の一例を示す図である。It is a figure which shows an example of the cross-sectional structure perpendicular to the axial direction of a structural member.

以下に添付図面を参照しながら、本開示の好適な実施の形態について詳細に説明する。なお、本明細書及び図面において、実質的に同一の機能構成を有する構成要素については、同一の符号を付することにより重複説明を省略する。 Preferred embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. In the present specification and the drawings, components having substantially the same functional configuration are designated by the same reference numerals, and duplicate description will be omitted.

＜１．第１の実施形態＞
［車体構造の構成例］
まず、図１を参照して、第１の実施形態に係る構造部材１００の概略構成について説明する。図１は、本実施形態に係る構造部材１００とその周辺構造の一例を示す斜視図である。図１に示すように、構造部材１００は、図１におけるＹ方向を軸方向とし、軸方向を法線方向とする断面視（Ｘ－Ｚ平面視）したときに、閉断面となっている部材である。構造部材１００は、第１の部材１１０と、第２の部材１２０とを含んで構成されている。構造部材１００の閉断面部１０１の内部には、補強部（図示せず。図２で後述する第１の壁１３１と第２の壁１３３に相当）が設けられている。<1. First Embodiment>
[Example of vehicle body structure configuration]
First, with reference to FIG. 1, a schematic configuration of the structural member 100 according to the first embodiment will be described. FIG. 1 is a perspective view showing an example of the structural member 100 and its peripheral structure according to the present embodiment. As shown in FIG. 1, the structural member 100 has a closed cross section when viewed in cross section (XX-Z plan view) in which the Y direction in FIG. 1 is the axial direction and the axial direction is the normal direction. Is. The structural member 100 includes a first member 110 and a second member 120. A reinforcing portion (not shown; corresponding to the first wall 131 and the second wall 133, which will be described later in FIG. 2) is provided inside the closed cross-section portion 101 of the structural member 100.

図１に示すように、構造部材１００は、外部から荷重Ｆを受ける場合がある。構造部材１００は、第１の部材１１０が当該荷重Ｆを受けるように配置される。補強部は、当該荷重Ｆによる構造部材１００の変形を抑制しつつ、衝撃吸収特性を向上させるために、設けられる。補強部についての詳細は後述する。 As shown in FIG. 1, the structural member 100 may receive a load F from the outside. The structural member 100 is arranged so that the first member 110 receives the load F. The reinforcing portion is provided in order to improve the impact absorption characteristics while suppressing the deformation of the structural member 100 due to the load F. Details of the reinforcing portion will be described later.

また、図１に示すように、構造部材１００は、車体構造２００の一部として構成されてもよい。車体構造２００は、構造部材１００と、第１のクロス部材２０１と、第２のクロス部材２０３とを有する。また、車体構造２００は、板状部材２０５を有してもよい。なお、後述する構造部材１００の第１の面１１１は、車体構造２００における車外側と車内側のうち車外側に配置され、第２の面１２１は車内側に配置される。 Further, as shown in FIG. 1, the structural member 100 may be configured as a part of the vehicle body structure 200. The vehicle body structure 200 includes a structural member 100, a first cross member 201, and a second cross member 203. Further, the vehicle body structure 200 may have a plate-shaped member 205. The first surface 111 of the structural member 100, which will be described later, is arranged on the outside of the vehicle and the inside of the vehicle in the vehicle body structure 200, and the second surface 121 is arranged on the inside of the vehicle.

図１に示すように、第１のクロス部材２０１は、構造部材１００に対して荷重Ｆが入力される側とは反対側の面において、構造部材１００の軸方向と略直交する方向（図１におけるＸ方向）に取り付けられている。また、第２のクロス部材２０３は、構造部材１００へ荷重Ｆが入力される側とは反対側の面において、第１のクロス部材２０１と平行な方向に取り付けられている。さらに、第２のクロス部材２０３は、構造部材１００の軸方向において、第１のクロス部材２０１とは異なる位置に取り付けられている。補強部は、構造部材１００の軸方向において、少なくとも第１のクロス部材２０１と第２のクロス部材２０３との間に設けられている。 As shown in FIG. 1, the first cross member 201 has a direction substantially orthogonal to the axial direction of the structural member 100 on the surface opposite to the side on which the load F is input to the structural member 100 (FIG. 1). In the X direction). Further, the second cross member 203 is attached in a direction parallel to the first cross member 201 on the surface opposite to the side where the load F is input to the structural member 100. Further, the second cross member 203 is attached at a position different from that of the first cross member 201 in the axial direction of the structural member 100. The reinforcing portion is provided between at least the first cross member 201 and the second cross member 203 in the axial direction of the structural member 100.

車体構造２００は、自動車のフロア構造であることが好ましい。図１の例におけるフロア構造は、構造部材としてのサイドシル１００’と、第１のクロス部材としての第１のフロアクロスメンバ２０１’と、第２のクロス部材としての第２のフロアクロスメンバ２０３’と、板状部材としてのフロア２０５’とを有する。構造部材がサイドシルである場合、後述の第１の面１１１は車幅方向（図１におけるＸ方向）の車外側の面であり、第２の面１２１は車幅方向の車内側の面である。 The body structure 200 is preferably a floor structure of an automobile. The floor structure in the example of FIG. 1 includes a side sill 100'as a structural member, a first floor cross member 201' as a first cross member, and a second floor cross member 203'as a second cross member. And a floor 205'as a plate-shaped member. When the structural member is a side sill, the first surface 111 described later is the vehicle outer surface in the vehicle width direction (X direction in FIG. 1), and the second surface 121 is the vehicle inner surface in the vehicle width direction. ..

構造部材１００は、キャビン骨格または衝撃吸収骨格として自動車骨格を構成し得る。キャビン骨格としての適用例は、特にクロス部材により支持されて曲げ入力が想定される、ルーフサイドレール、Ｂピラー、Ａピラーロア、Ａピラーアッパーが挙げられる。また、その他に、構造部材１００は、ルーフセンタリンフォース、トンネル、キックリーンフォース、アンダーリーンフォース、フロントヘッダ等に適用されてもよい。 The structural member 100 may constitute an automobile skeleton as a cabin skeleton or a shock absorbing skeleton. Examples of applications as a cabin skeleton include roof side rails, B-pillars, A-pillar lowers, and A-pillar uppers, which are supported by a cross member and are expected to be bent. In addition, the structural member 100 may be applied to a roof center reinforcement, a tunnel, a kick clean force, an under lean force, a front header, and the like.

また、衝撃吸収骨格としての構造部材１００の適用例は、特にクロス部材により支持されて曲げ入力が想定される、バンパリーンフォースが挙げられる。また、その他に、構造部材１００は、リアサイドメンバー、エプロンアッパメンバ、バンパリーンフォース、クラッシュボックス、フロントサイドメンバー等に適用されてもよい。 Further, an example of application of the structural member 100 as a shock absorbing skeleton is a bumper rein force, which is supported by a cross member and is expected to have a bending input. In addition, the structural member 100 may be applied to a rear side member, an apron upper member, a bumper reinforcement, a crash box, a front side member, and the like.

［構造部材の構成例］
次に、図２を参照して、本実施形態に係る構造部材１００の断面構造について説明する。図２は、本実施形態に係る構造部材１００の断面構造の一例を示す、図１におけるＩ－Ｉ’断面図である。図２に示すように、構造部材１００は、第１の部材１１０と、第２の部材１２０と、第１の壁１３１と、第２の壁１３３とを備えている。構造部材１００は、第１の部材１１０と第２の部材１２０とにより、Ｘ－Ｚ平面の断面において、閉断面部１０１が形成されている。構造部材１００は、当該閉断面部１０１の内部に第１の壁１３１と第２の壁１３３を備えている。[Structural member configuration example]
Next, with reference to FIG. 2, the cross-sectional structure of the structural member 100 according to the present embodiment will be described. FIG. 2 is a cross-sectional view taken along the line I-I'in FIG. 1 showing an example of a cross-sectional structure of the structural member 100 according to the present embodiment. As shown in FIG. 2, the structural member 100 includes a first member 110, a second member 120, a first wall 131, and a second wall 133. In the structural member 100, the closed cross-section portion 101 is formed in the cross section of the XX plane by the first member 110 and the second member 120. The structural member 100 includes a first wall 131 and a second wall 133 inside the closed cross-section portion 101.

第１の部材１１０は、Ｘ－Ｚ平面の断面視でハット形状の部材である。詳述すると、第１の部材１１０は、閉断面部１０１の第１の面としての天板部１１１と、天板部１１１の短手方向（Ｚ方向）の端部に屈曲部を挟んで隣接する縦壁部１１３と、縦壁部１１３の天板部１１１と反対側において別の屈曲部を挟んで隣接するフランジ部１１５とを有する。第１の部材１１０は、例えば鋼板のプレス加工等により製造される。 The first member 110 is a hat-shaped member in a cross-sectional view of the XZ plane. More specifically, the first member 110 is adjacent to the top plate portion 111 as the first surface of the closed cross-sectional portion 101 and the end portion of the top plate portion 111 in the lateral direction (Z direction) with the bent portion interposed therebetween. It has a vertical wall portion 113 and a flange portion 115 adjacent to the top plate portion 111 of the vertical wall portion 113 with another bent portion interposed therebetween. The first member 110 is manufactured, for example, by stamping a steel plate.

天板部１１１には、構造部材１００の外方から荷重Ｆが入力され得る。荷重Ｆの入力によって、まず第１の部材１１０が変形する。このとき、天板部１１１とともに縦壁部１１３が面外変形する。このように縦壁部１１３により、荷重Ｆが入力された際の、第１の部材１１０の変形能が向上される。 A load F can be input to the top plate portion 111 from the outside of the structural member 100. First, the first member 110 is deformed by the input of the load F. At this time, the vertical wall portion 113 is deformed out of the plane together with the top plate portion 111. As described above, the vertical wall portion 113 improves the deformability of the first member 110 when the load F is input.

第２の部材１２０は、Ｘ－Ｚ平面の断面視でハット形状の部材である。詳述すると、第２の部材１２０は、閉断面部１０１の第２の面としての天板部１２１と、天板部１２１の短手方向（Ｚ方向）の端部に屈曲部を挟んで隣接する縦壁部１２３と、縦壁部１２３の天板部１２１と反対側において別の屈曲部を挟んで隣接するフランジ部１２５とを有する。第２の部材１２０は、例えば鋼板のプレス加工等により製造される。 The second member 120 is a hat-shaped member in a cross-sectional view of the XZ plane. More specifically, the second member 120 is adjacent to the top plate portion 121 as the second surface of the closed cross-sectional portion 101 and the end portion of the top plate portion 121 in the lateral direction (Z direction) with the bent portion interposed therebetween. It has a vertical wall portion 123 and a flange portion 125 adjacent to the top plate portion 121 of the vertical wall portion 123 with another bent portion interposed therebetween. The second member 120 is manufactured, for example, by stamping a steel plate.

第１の部材１１０と第２の部材１２０とが、それぞれのフランジ部１１５、１２５で互いに接合されるので、構造部材１００が閉断面構造になる。接合方法は、レーザ溶接、スポット溶接などの公知の接合技術が用いられ、特に限定されない。 Since the first member 110 and the second member 120 are joined to each other at the flange portions 115 and 125, respectively, the structural member 100 has a closed cross-sectional structure. A known joining technique such as laser welding or spot welding is used as the joining method, and the joining method is not particularly limited.

第１の部材１１０と、第２の部材１２０の材質は、例えば、引張強度で９８０ＭＰａ級の鋼材である。また、その他の材質として、例えば、その他の引張強度クラスの鋼材であってもよいし、アルミニウム基合金、マグネシウム基合金等の軽金属合金、ＣＦＲＰ（Ｃａｒｂｏｎ Ｆｉｂｅｒ Ｒｅｉｎｆｏｒｃｅｄ Ｐｌａｓｔｉｃ）等の繊維強化樹脂であってもよい。また、第１の部材１１０と、第２の部材１２０とは、上記材料を組み合わせて、構成されてもよい。また、第１の部材１１０、および第２の部材１２０の板厚は、例えば、１．６ｍｍであるが、特に限定されない。第１の部材１１０および第２の部材１２０の材質および板厚は、構造部材１００の使用目的、用途等に応じて適宜選択され得る。 The material of the first member 110 and the second member 120 is, for example, a steel material having a tensile strength of 980 MPa class. Further, the other material may be, for example, a steel material of other tensile strength class, a light metal alloy such as an aluminum-based alloy or a magnesium-based alloy, or a fiber-reinforced resin such as CFRP (Carbon Fiber Reinforced Plastic). May be good. Further, the first member 110 and the second member 120 may be configured by combining the above materials. The plate thickness of the first member 110 and the second member 120 is, for example, 1.6 mm, but is not particularly limited. The material and plate thickness of the first member 110 and the second member 120 can be appropriately selected depending on the purpose of use, application, and the like of the structural member 100.

［第１の壁と第２の壁］
引き続き、図２を参照しながら、本実施形態に係る第１の壁１３１と第２の壁１３３について説明する。図２に示すように、第１の壁１３１と第２の壁１３３は、構造部材１００の閉断面部１０１の内部において第１の部材１１０の天板部１１１と第２の部材１２０の天板部１２１の間に設けられている。第１の壁１３１は、第２の部材１２０の天板部１２１から第１の部材１１０の天板部１１１に向かって延在している。同様に、第２の壁１３３は、第２の部材１２０の天板部１２１から第１の部材１１０の天板部１１１に向かって延在している。これらの第１の壁１３１と第２の壁１３３は、構造部材１００の軸方向（図１におけるＹ方向）に延在している。衝撃吸収特性を向上させる観点からは、第１の壁１３１と第２の壁１３３は、構造部材１００の軸方向（図１におけるＹ方向）の少なくとも一部において、設けられていればよい。[First wall and second wall]
Subsequently, with reference to FIG. 2, the first wall 131 and the second wall 133 according to the present embodiment will be described. As shown in FIG. 2, the first wall 131 and the second wall 133 are the top plate portion 111 of the first member 110 and the top plate of the second member 120 inside the closed cross-sectional portion 101 of the structural member 100. It is provided between the portions 121. The first wall 131 extends from the top plate portion 121 of the second member 120 toward the top plate portion 111 of the first member 110. Similarly, the second wall 133 extends from the top plate portion 121 of the second member 120 toward the top plate portion 111 of the first member 110. These first wall 131 and second wall 133 extend in the axial direction (Y direction in FIG. 1) of the structural member 100. From the viewpoint of improving the shock absorption characteristics, the first wall 131 and the second wall 133 may be provided at least in a part of the axial direction (Y direction in FIG. 1) of the structural member 100.

構造部材１００は、第１の壁１３１の、第１の部材１１０の天板部１１１側端部と、第２の壁１３３の、第１の部材１１０の天板部１１１側端部の間を繋ぐ連結部１３５を有する。すなわち、Ｘ－Ｚ平面断面視で、一対の第１の壁１３１と第２の壁１３３は、それぞれのＺ方向端部で、連結部１３５により繋がっている。 The structural member 100 is located between the end portion of the first wall 131 on the top plate portion 111 side of the first member 110 and the end portion of the second wall 133 on the top plate portion 111 side of the first member 110. It has a connecting portion 135 for connecting. That is, in the XZ plan cross-sectional view, the pair of the first wall 131 and the second wall 133 are connected by the connecting portion 135 at each end in the Z direction.

第１の壁１３１は、第１の部位１３１ａと、第２の部位１３１ｂと、第１の部位１３１ａおよび第２の部位１３１ｂよりも第２の壁１３３に向かって突出した第１の溝部１３１ｃを有している。第１の溝部１３１ｃは、構造部材１００の軸方向（Ｙ方向）に延在している。また、第１の壁１３１は、図２のように第２の部位１３１ｂの端部から、第２の壁１３３と反対側へ屈曲された第１のフランジ１３１ｄを有してもよい。 The first wall 131 includes a first portion 131a, a second portion 131b, and a first groove portion 131c projecting from the first portion 131a and the second portion 131b toward the second wall 133. Have. The first groove portion 131c extends in the axial direction (Y direction) of the structural member 100. Further, the first wall 131 may have a first flange 131d bent from the end of the second portion 131b to the opposite side of the second wall 133 as shown in FIG.

第２の壁１３３は、第１の部位１３３ａと、第２の部位１３３ｂと、第１の部位１３３ａおよび第２の部位１３３ｂよりも第１の壁１３１に向かって突出した第２の溝部１３３ｃを有している。第２の溝部１３３ｃは、構造部材１００の軸方向（Ｙ方向）に延在している。また、第２の壁１３３は、第２の部位１３３ｂの端部から、第１の壁１３１と反対側へ屈曲された第２のフランジ１３３ｄを有してもよい。 The second wall 133 includes a first portion 133a, a second portion 133b, and a second groove portion 133c protruding toward the first wall 131 from the first portion 133a and the second portion 133b. Have. The second groove portion 133c extends in the axial direction (Y direction) of the structural member 100. Further, the second wall 133 may have a second flange 133d bent from the end portion of the second portion 133b to the side opposite to the first wall 131.

第１の壁１３１と第２の壁１３３の間の距離は、例えば第１の部材１１０の天板部１１１の短手方向（Ｚ方向）距離の１／４程度である。 The distance between the first wall 131 and the second wall 133 is, for example, about 1/4 of the lateral direction (Z direction) distance of the top plate portion 111 of the first member 110.

第１の壁１３１の第１の部位１３１ａは、第１の部材１１０の天板部１１１側にある平板状の部位である。第２の壁１３３の第１の部位１３３ａは、第１の部材１１０の天板部１１１側にある平板状の部位である。また、第１の壁１３１の第２の部位１３１ｂは、第２の部材１２０の天板部１２１側にある平板状の部位である。第２の壁１３３の第２の部位１３３ｂは、第２の部材１２０の天板部１２１側にある平板状の部位である。 The first portion 131a of the first wall 131 is a flat plate-shaped portion on the top plate portion 111 side of the first member 110. The first portion 133a of the second wall 133 is a flat plate-shaped portion on the top plate portion 111 side of the first member 110. Further, the second portion 131b of the first wall 131 is a flat plate-shaped portion on the top plate portion 121 side of the second member 120. The second portion 133b of the second wall 133 is a flat plate-shaped portion on the top plate portion 121 side of the second member 120.

第１の溝部１３１ｃは、第１の壁１３１の、第１の部位１３１ａと第２の部位１３１ｂの間に設けられている。第２の溝部１３３ｃは、第２の壁１３３の、第１の部位１３３ａと第２の部位１３３ｂの間に設けられている。第１の溝部１３１ｃと第２の溝部１３３ｃは、図２におけるＸ方向で第１の壁１３１と第２の壁１３３の略中央に設けられていることが好ましい。換言すると、第１の溝部１３１ｃと第２の溝部１３３ｃは、中間面１０１ａを横切る位置に設けられていることが好ましい。中間面１０１ａとは、閉断面部１０１の第１の面（本実施形態では天板部１１１）と、第２の面（本実施形態では天板部１２１）の中間に位置する面である。より詳述すると、中間面１０１ａは、第１の面に垂直な方向の第１の面と第２の面の間隔をＤとしたときに、Ｄ／２の位置にある面である。 The first groove portion 131c is provided between the first portion 131a and the second portion 131b of the first wall 131. The second groove portion 133c is provided between the first portion 133a and the second portion 133b on the second wall 133. It is preferable that the first groove portion 131c and the second groove portion 133c are provided substantially in the center of the first wall 131 and the second wall 133 in the X direction in FIG. In other words, it is preferable that the first groove portion 131c and the second groove portion 133c are provided at positions crossing the intermediate surface 101a. The intermediate surface 101a is a surface located between the first surface (top plate portion 111 in this embodiment) and the second surface (top plate portion 121 in this embodiment) of the closed cross-sectional portion 101. More specifically, the intermediate surface 101a is a surface at the position of D / 2 when the distance between the first surface and the second surface in the direction perpendicular to the first surface is D.

第１の溝部１３１ｃと第２の溝部１３３ｃが中間面１０１ａを横切るように設けられていることで、第１の溝部１３１ｃと第２の溝部１３３ｃを起点として第１の壁１３１と第２の壁１３３が変形する際に、第１の壁１３１と第２の壁１３３の天板部１１１側の変形可能な部分を残しつつ、第１の壁１３１と第２の壁１３３の天板部１２１側の部分によって、背面侵入量を抑制することができる。なお、第１の壁１３１と第２の壁１３３の変形の詳細については後述する。 Since the first groove 131c and the second groove 133c are provided so as to cross the intermediate surface 101a, the first wall 131 and the second wall start from the first groove 131c and the second groove 133c. When the 133 is deformed, the top plate portion 121 side of the first wall 131 and the second wall 133 is left while leaving the deformable portion of the first wall 131 and the second wall 133 on the top plate portion 111 side. The amount of back penetration can be suppressed by the portion of. The details of the deformation of the first wall 131 and the second wall 133 will be described later.

第１の溝部１３１ｃの深さ（第１の壁１３１の第１の部位１３１ａからのＺ方向距離）は、少なくとも６ｍｍであることが好ましい。第２の溝部１３３ｃの深さ（第２の壁１３３の第１の部位１３３ａからのＺ方向距離）は、少なくとも６ｍｍであることが好ましい。第１の溝部１３１ｃの幅（Ｘ方向距離）は、第１の壁１３１のＸ方向距離に対して、１／４～１／３であることが好ましい。第２の溝部１３３ｃの幅（Ｘ方向距離）は、第２の壁１３３のＸ方向距離に対して、１／４～１／３であることが好ましい。 The depth of the first groove 131c (distance in the Z direction from the first portion 131a of the first wall 131) is preferably at least 6 mm. The depth of the second groove portion 133c (distance in the Z direction from the first portion 133a of the second wall 133) is preferably at least 6 mm. The width (distance in the X direction) of the first groove portion 131c is preferably 1/4 to 1/3 with respect to the distance in the X direction of the first wall 131. The width (distance in the X direction) of the second groove portion 133c is preferably 1/4 to 1/3 with respect to the distance in the X direction of the second wall 133.

また、第１の溝部１３１ｃと第２の溝部１３３ｃの形状は、図２に示したような形状に限定されない。例えば第１の部材１１０の天板部１１１への荷重入力後、第１の壁１３１と第２の壁１３３の変形開始に伴って、第１の溝部１３１ｃと第２の溝部１３３ｃ同士が接触する形状であればよい。 Further, the shapes of the first groove portion 131c and the second groove portion 133c are not limited to the shapes shown in FIG. For example, after the load is input to the top plate portion 111 of the first member 110, the first groove portion 131c and the second groove portion 133c come into contact with each other as the deformation of the first wall 131 and the second wall 133 starts. It may be in shape.

本実施形態のように閉断面部１０１の内部に第１の壁１３１と第２の壁１３３が設けられていることにより、構造部材１００の変形開始直後から、連結部１３５を介して第１の壁１３１と第２の壁１３３の変形も開始される。従って、第１の壁１３１と第２の壁１３３による耐荷重向上や衝撃吸収特性の向上効果が、変形開始初期から発揮される。 Since the first wall 131 and the second wall 133 are provided inside the closed cross-section portion 101 as in the present embodiment, the first wall 131 and the second wall 133 are provided via the connecting portion 135 immediately after the start of deformation of the structural member 100. Deformation of the wall 131 and the second wall 133 is also initiated. Therefore, the effects of improving the load capacity and the shock absorbing characteristics of the first wall 131 and the second wall 133 are exhibited from the initial stage of deformation.

連結部１３５は、図２のように第１の部材１１０の天板部１１１に接触していてもよい。この場合、連結部１３５は、構造部材１００の閉断面部１０１の内側に溶接等により接合されていてもよい。また、第１の壁１３１と第２の壁１３３は、図３のように第１の部材１１０の天板部１１１に直接接触または接合されていてもよい。この場合の連結部１３５とは、第１の部材１１０の天板部１１１である。また、連結部１３５は、図４のように第１の部材１１０の天板部１１１に当接していない、天板部１１１に平行な面であってもよい。図３および図４のような場合であっても、天板部１１１への荷重入力時には連結部１３５を介して第１の壁１３１と第２の壁１３３が変形することから、第１の壁１３１と第２の壁１３３が設けられていない場合に比べて衝撃吸収特性が向上する。 The connecting portion 135 may be in contact with the top plate portion 111 of the first member 110 as shown in FIG. In this case, the connecting portion 135 may be joined to the inside of the closed cross-section portion 101 of the structural member 100 by welding or the like. Further, the first wall 131 and the second wall 133 may be directly in contact with or joined to the top plate portion 111 of the first member 110 as shown in FIG. The connecting portion 135 in this case is the top plate portion 111 of the first member 110. Further, the connecting portion 135 may be a surface parallel to the top plate portion 111, which is not in contact with the top plate portion 111 of the first member 110 as shown in FIG. Even in the cases as shown in FIGS. 3 and 4, when the load is input to the top plate portion 111, the first wall 131 and the second wall 133 are deformed via the connecting portion 135, so that the first wall is formed. The shock absorption characteristics are improved as compared with the case where the 131 and the second wall 133 are not provided.

第１の壁１３１は、連結部１３５に繋がっている端部とは反対側の端部に連続する第１のフランジ１３１ｄを有していてもよい。第２の壁１３３は、連結部１３５に繋がっている端部とは反対側の端部に連続する第２のフランジ１３３ｄを有していてもよい。図２の例において、第１の壁１３１と第２の壁１３３は、第２の部材１２０の天板部１２１の内側に、第１のフランジ１３１ｄと第２のフランジ１３３ｄを介して溶接等により取り付けられている。第１の壁１３１と第２の壁１３３が第１のフランジ１３１ｄと第２のフランジ１３３ｄを介して構造部材１００の閉断面部１０１の内側に接合されていることにより、荷重入力時に第１の壁１３１と第２の壁１３３が安定して変形できる。 The first wall 131 may have a first flange 131d continuous with an end opposite to the end connected to the connecting portion 135. The second wall 133 may have a second flange 133d continuous to the end opposite to the end connected to the connecting portion 135. In the example of FIG. 2, the first wall 131 and the second wall 133 are welded to the inside of the top plate portion 121 of the second member 120 via the first flange 131d and the second flange 133d. It is attached. Since the first wall 131 and the second wall 133 are joined to the inside of the closed cross-sectional portion 101 of the structural member 100 via the first flange 131d and the second flange 133d, the first wall 131 and the second wall 133 are joined to the inside of the closed cross-sectional portion 101 at the time of load input. The wall 131 and the second wall 133 can be stably deformed.

なお、第１の壁１３１と第２の壁１３３は、第１のフランジ１３１ｄと第２のフランジ１３３ｄを介さずに、第１の壁１３１と第２の壁１３３の端部が第２の部材１２０の閉断面部１０１の内側に直接突き当てられた状態で、溶接等によって接合されていてもよい。 In the first wall 131 and the second wall 133, the ends of the first wall 131 and the second wall 133 are the second members without passing through the first flange 131d and the second flange 133d. It may be joined by welding or the like while being directly abutted against the inside of the closed cross-sectional portion 101 of the 120.

第１の壁１３１と第２の壁１３３の材質は、衝撃吸収特性、変形特性に応じて、適宜変更でき、特に限定されない。例えば、引張強度で９８０ＭＰａ級の鋼材や、その他の引張強度クラスの鋼材であってもよいし、アルミニウム基合金、マグネシウム基合金等の軽金属合金、ＣＦＲＰ等の繊維強化樹脂であってもよい。また、第１の壁１３１と第２の壁１３３の材質は、第１の部材１１０または第２の部材１２０と同一の材料であってもよいし、異なる材質であってもよい。 The materials of the first wall 131 and the second wall 133 can be appropriately changed according to the shock absorption characteristics and the deformation characteristics, and are not particularly limited. For example, a steel material having a tensile strength of 980 MPa class or another steel material having a tensile strength class may be used, a light metal alloy such as an aluminum-based alloy or a magnesium-based alloy, or a fiber-reinforced resin such as CFRP may be used. Further, the materials of the first wall 131 and the second wall 133 may be the same material as the first member 110 or the second member 120, or may be different materials.

また、第１の壁１３１と第２の壁１３３の板厚についても、衝撃吸収特性、変形特性に応じて、適宜変更でき、特に限定されない。例えば、第１の壁１３１と第２の壁１３３の板厚は、１．６ｍｍ程度である。また、例えば、第１の壁１３１と第２の壁１３３の板厚は、第１の部材１１０または第２の部材１２０と同一または異なる板厚であってもよい。以上、本実施形態に係る構造部材１００の構成例について説明した。 Further, the plate thicknesses of the first wall 131 and the second wall 133 can be appropriately changed according to the shock absorption characteristics and the deformation characteristics, and are not particularly limited. For example, the plate thickness of the first wall 131 and the second wall 133 is about 1.6 mm. Further, for example, the plate thickness of the first wall 131 and the second wall 133 may be the same as or different from the plate thickness of the first member 110 or the second member 120. The configuration example of the structural member 100 according to the present embodiment has been described above.

［構造部材の変形］
次に、図５Ａ、図５Ｂを参照して、本実施形態に係る構造部材１００に荷重がかかったときの変形の様子について説明する。図５Ａは、本実施形態に係る構造部材１００に荷重がかかったときの変形の様子を模式的に示す図である。図５Ｂは、本実施形態に係る構造部材１００に荷重がかかったときの変形の様子を模式的に示す図である。図５Ａに示すように、例えば荷重Ｆが、構造部材１００の天板部１１１に対して入力される。このとき、第１の部材１１０の縦壁部１１３が面外変形するとともに、第１の壁１３１と第２の壁１３３が変形する。[Deformation of structural members]
Next, with reference to FIGS. 5A and 5B, a state of deformation when a load is applied to the structural member 100 according to the present embodiment will be described. FIG. 5A is a diagram schematically showing a state of deformation when a load is applied to the structural member 100 according to the present embodiment. FIG. 5B is a diagram schematically showing a state of deformation when a load is applied to the structural member 100 according to the present embodiment. As shown in FIG. 5A, for example, a load F is input to the top plate portion 111 of the structural member 100. At this time, the vertical wall portion 113 of the first member 110 is deformed out of the plane, and the first wall 131 and the second wall 133 are deformed.

具体的には、第１の壁１３１と第２の壁１３３に第１の部材１１０の天板部１１１から荷重が伝達されると、第１の壁１３１と第２の壁１３３の第１の部位１３１ａ、１３３ａ、および連結部１３５が外方に膨らむようにして変形する。また、第１の壁１３１の第１の溝部１３１ｃと、第２の壁１３３の第２の溝部１３３ｃ同士が接触する方向に変形する。その後、第１の壁１３１と第２の壁１３３は、連結部１３５側から次第に押し潰されるように変形する。このとき、第１の溝部１３１ｃと第２の溝部１３３ｃ同士は接触しているので、第１の壁１３１と第２の壁１３３の第１の部材１１０側（第１の部位１３１ａ、１３３ａ、連結部１３５）での変形が主に進行する。すなわち、第１の溝部１３１ｃと第２の溝部１３３ｃ同士が接触することにより、入力荷重に対して第１の部位１３１ａ、１３３ａが図５ＡにおけるＸ方向に支持され、当該部位のみを選択的に変形させることができる。 Specifically, when a load is transmitted from the top plate portion 111 of the first member 110 to the first wall 131 and the second wall 133, the first wall 131 and the second wall 133 become the first. The portions 131a, 133a, and the connecting portion 135 are deformed so as to bulge outward. Further, the first groove portion 131c of the first wall 131 and the second groove portion 133c of the second wall 133 are deformed in the direction of contact with each other. After that, the first wall 131 and the second wall 133 are deformed so as to be gradually crushed from the connecting portion 135 side. At this time, since the first groove portion 131c and the second groove portion 133c are in contact with each other, the first member 110 side (first portion 131a, 133a, connection of the first wall 131 and the second wall 133). The deformation in part 135) mainly progresses. That is, when the first groove portion 131c and the second groove portion 133c come into contact with each other, the first portions 131a and 133a are supported in the X direction in FIG. 5A with respect to the input load, and only the portion is selectively deformed. Can be made to.

この結果、図５Ａに示すように、第１の部材１１０側の変形が進む一方で、第２の部材１２０側では、大きな変形が生じない。このように、構造部材１００の衝撃吸収特性が向上しつつ、第１の部材１１０側という特定部位のみで変形を進行させることができる。 As a result, as shown in FIG. 5A, the deformation on the first member 110 side progresses, while the deformation on the second member 120 side does not occur significantly. In this way, while improving the impact absorption characteristics of the structural member 100, the deformation can proceed only at the specific portion on the first member 110 side.

さらに、変形が進むと、図５Ｂに示すように、第１の部材１１０は、大きく変形し、特に縦壁部１１３が著しく面外変形している。一方、第２の部材１２０も大きく変形しているが、第１の部材１１０と比較すれば、変形はある程度抑制されている。また、第１の壁１３１と第２の壁１３３の第１の部材１１０側は、ほぼ圧潰し、第１の壁１３１と第２の壁１３３の第２の部材１２０側も部分的に変形している。さらに、第１の壁１３１と第２の壁１３３が全体として図５Ｂ中のＺ方向へ倒れるように変形している（図中矢印参照）。これは、第１の壁１３１と第２の壁１３３に生じた荷重Ｆによる曲げモーメントとの影響と考えられる。以上、本実施形態に係る構造部材１００の変形の様子について説明した。 Further, as the deformation progresses, as shown in FIG. 5B, the first member 110 is greatly deformed, and in particular, the vertical wall portion 113 is significantly out-of-plane deformed. On the other hand, the second member 120 is also greatly deformed, but the deformation is suppressed to some extent as compared with the first member 110. Further, the first member 110 side of the first wall 131 and the second wall 133 is almost crushed, and the second member 120 side of the first wall 131 and the second wall 133 is also partially deformed. ing. Further, the first wall 131 and the second wall 133 are deformed as a whole so as to fall in the Z direction in FIG. 5B (see the arrow in the figure). This is considered to be due to the influence of the bending moment due to the load F generated on the first wall 131 and the second wall 133. The deformation of the structural member 100 according to the present embodiment has been described above.

（作用効果）
本実施形態によれば、構造部材１００の第１の溝部１３１ｃと第２の溝部１３３ｃ同士の接触により、第１の壁１３１と第２の壁１３３の変形が部分的に抑制され、耐荷重が向上するとともに、一方、第１の部材１１０側の変形が進行し、変形能が向上する。この結果、構造部材１００の衝撃吸収特性が向上する。(Action effect)
According to the present embodiment, the contact between the first groove portion 131c and the second groove portion 133c of the structural member 100 partially suppresses the deformation of the first wall 131 and the second wall 133, and the load capacity is increased. On the other hand, the deformation of the first member 110 side progresses, and the deformability is improved. As a result, the shock absorption characteristics of the structural member 100 are improved.

特に、近年普及が進んでいる電気自動車やハイブリッド自動車等に搭載されているＬｉイオンバッテリモジュールは、自動車のフロア構造内に配置されていることがある。この場合、側面衝突により、フロア側方の構造部材（サイドシル等）が大きく変形すると構造内部へ侵入することがある。そこで、バッテリモジュールの安全性をさらに向上させるため、構造部材の侵入量（背面侵入量）を抑制することが求められる。 In particular, the Li-ion battery module mounted on an electric vehicle, a hybrid vehicle, or the like, which has become widespread in recent years, may be arranged in the floor structure of the vehicle. In this case, if the structural member (side sill or the like) on the side of the floor is significantly deformed due to a side collision, it may invade the inside of the structure. Therefore, in order to further improve the safety of the battery module, it is required to suppress the intrusion amount (rear intrusion amount) of the structural member.

本実施形態に係る構造部材１００によれば、上述の様に、第１の部材１１０側を変形させて、第２の部材１２０側の変形を抑制できるので、背面侵入量を抑制することができる。特に、本実施形態に係る車体構造２００が、フロア構造である場合に、構造内部への背面侵入量を抑制することができる。これにより、フロア構造内に配置されるＬｉイオンバッテリモジュール等の部品を保護し、安全性をさらに向上できる。 According to the structural member 100 according to the present embodiment, as described above, the first member 110 side can be deformed to suppress the deformation of the second member 120 side, so that the amount of back penetration can be suppressed. .. In particular, when the vehicle body structure 200 according to the present embodiment is a floor structure, it is possible to suppress the amount of back penetration into the structure. As a result, parts such as the Li-ion battery module arranged in the floor structure can be protected, and safety can be further improved.

［変形例］
次に、図６を参照しながら、上記実施形態の一の変形例について説明する。図６は、本実施形態に係る構造部材１００の一の変形例を示す断面図である。図２の例では、第１の壁１３１と第２の壁１３３の、天板部１２１側の端部に第１のフランジ１３１ｄと第２のフランジ１３３ｄが設けられていたが、図６のように第１のフランジ１３１ｄと第２のフランジ１３３ｄは設けられていなくてもよい。本変形例によれば、図６におけるＸ－Ｚ平面断面視で、第１の壁１３１と第２の壁１３３の形状が、第１の部材１１０側と第２の部材１２０側とで対称となっている。[Modification example]
Next, a modified example of the above embodiment will be described with reference to FIG. FIG. 6 is a cross-sectional view showing a modified example of one of the structural members 100 according to the present embodiment. In the example of FIG. 2, the first flange 131d and the second flange 133d are provided at the ends of the first wall 131 and the second wall 133 on the top plate portion 121 side, but as shown in FIG. The first flange 131d and the second flange 133d may not be provided. According to this modification, the shapes of the first wall 131 and the second wall 133 are symmetrical between the first member 110 side and the second member 120 side in the XZ plane cross-sectional view in FIG. It has become.

＜２．第２の実施形態＞
次に、図７～図９を参照しながら、第２の実施形態に係る構造部材１００について説明する。図７は、第２の実施形態に係る構造部材１００とその周辺構造の一例を示す斜視図である。図８は、本実施形態に係る構造部材１００の第１の溝部１３１ｃと第２の溝部１３３ｃの断面構造の一例を示す、図７におけるＩＩ－ＩＩ’端面図である。図９は、本実施形態に係る構造部材１００の断面構造の一例を示す、図７におけるＩＩＩ－ＩＩＩ’端面図である。本実施形態の構造部材１００は、補強部材１４０を有している。本実施形態の構造部材１００は、第１の溝部１３１ｃと第２の溝部１３３ｃ同士が接触するまでの第１の壁１３１と第２の壁１３３の変形が抑制される点で、上述した第１の実施形態と相違する。なお、本実施形態において、第１の実施形態と共通する構成については説明を省略することがある。<2. Second embodiment>
Next, the structural member 100 according to the second embodiment will be described with reference to FIGS. 7 to 9. FIG. 7 is a perspective view showing an example of the structural member 100 and its peripheral structure according to the second embodiment. FIG. 8 is an end view of II-II'in FIG. 7, showing an example of the cross-sectional structure of the first groove portion 131c and the second groove portion 133c of the structural member 100 according to the present embodiment. FIG. 9 is an end view of III-III'in FIG. 7, showing an example of the cross-sectional structure of the structural member 100 according to the present embodiment. The structural member 100 of the present embodiment has a reinforcing member 140. The structural member 100 of the present embodiment has the above-mentioned first aspect in that the deformation of the first wall 131 and the second wall 133 until the first groove portion 131c and the second groove portion 133c come into contact with each other is suppressed. It is different from the embodiment of. In this embodiment, the description of the configuration common to the first embodiment may be omitted.

図７～図９に示すように、本実施形態に係る構造部材１００は、第１の壁１３１の第１の溝部１３１ｃと第２の壁１３３の第２の溝部１３３ｃとの間に、補強部材１４０を備えている。 As shown in FIGS. 7 to 9, the structural member 100 according to the present embodiment is a reinforcing member between the first groove portion 131c of the first wall 131 and the second groove portion 133c of the second wall 133. It is equipped with 140.

図８に示すように、補強部材１４０は、第１の壁１３１の第１の溝部１３１ｃと、第２の壁１３３の第２の溝部１３３ｃとの間に配置された、複数の壁部１４１を有する。壁部１４１は、第１の溝部１３１ｃと第２の溝部１３３ｃ同士の接触方向（図８におけるＺ方向）が、壁部１４１の面内方向に略一致するまたは、所定の角度を有するように延在されている。すなわち、壁部１４１は、第１の壁１３１の第１の溝部１３１ｃと、第２の壁１３３の第２の溝部１３３ｃとの間を架け渡すように配置されている。これにより、第１の溝部１３１ｃと第２の溝部１３３ｃ同士が接触するように変形する際の第１の壁１３１と第２の壁１３３の耐荷重を向上できる。 As shown in FIG. 8, the reinforcing member 140 has a plurality of wall portions 141 arranged between the first groove portion 131c of the first wall 131 and the second groove portion 133c of the second wall 133. Have. The wall portion 141 extends so that the contact direction (Z direction in FIG. 8) between the first groove portion 131c and the second groove portion 133c substantially coincides with the in-plane direction of the wall portion 141 or has a predetermined angle. Being present. That is, the wall portion 141 is arranged so as to bridge between the first groove portion 131c of the first wall 131 and the second groove portion 133c of the second wall 133. As a result, the load capacity of the first wall 131 and the second wall 133 when the first groove 131c and the second groove 133c are deformed so as to come into contact with each other can be improved.

本実施形態の補強部材１４０は、第１の平面部１４３ａと、第２の平面部１４３ｂと、第１の接合部１４５ａと、第２の接合部１４５ｂを備えている。第１の平面部１４３ａと第２の平面部１４３ｂの間には壁部１４１がある。第１の接合部１４５ａでは、第１の平面部１４３ａと第１の壁１３１の第１の溝部１３１ｃが接合され、第２の接合部１４５ｂでは、第２の平面部１４３ｂと第２の壁１３３の第２の溝部１３３ｃが接合されている。なお、第１の平面部１４３ａと第２の平面部１４３ｂは設けられていなくてもよく、その場合、第１の接合部１４５ａでは、補強部材１４０の第１面と第１の溝部１３１ｃが接合され、第２の接合部１４５ｂでは、補強部材１４０の第１面とは反対側の第２面と第２の溝部１３３ｃが接合されていることが好ましい。 The reinforcing member 140 of the present embodiment includes a first flat surface portion 143a, a second flat surface portion 143b, a first joint portion 145a, and a second joint portion 145b. There is a wall portion 141 between the first flat surface portion 143a and the second flat surface portion 143b. At the first joint portion 145a, the first flat surface portion 143a and the first groove portion 131c of the first wall 131 are joined, and at the second joint portion 145b, the second flat surface portion 143b and the second wall 133 are joined. The second groove portion 133c of the above is joined. The first flat surface portion 143a and the second flat surface portion 143b may not be provided. In that case, in the first joint portion 145a, the first surface of the reinforcing member 140 and the first groove portion 131c are joined. Therefore, in the second joint portion 145b, it is preferable that the second surface opposite to the first surface of the reinforcing member 140 and the second groove portion 133c are joined.

第１の平面部１４３ａは、第１の溝部１３１ｃに溶接によって取り付けられ、第２の平面部１４３ｂは、第２の溝部１３３ｃに溶接によって取り付けられてもよい。このとき、溶接個所に対向する第１の溝部１３１ｃと第２の溝部１３３ｃには、当該溶接個所に対応する位置に第１の孔部１３９ａと第２の孔部１３９ｂが設けられていてもよい。詳述すると、補強部材１４０は、図８に示すように第２の平面部１４３ｂと向き合う第１の溝部１３１ｃに第１の孔部１３９ａを備え、第１の平面部１４３ａと向き合う第２の溝部１３３ｃに第２の孔部１３９ｂを備えていてもよい。第１の孔部１３９ａと第２の孔部１３９ｂは、溶接用の工具（例えば、スポット溶接の際の溶接ガン）が通過できる程度の開口面積を有している。第１の孔部１３９ａと第２の孔部１３９ｂにより、スポット溶接の際の施工性が向上し、補強部材１４０が、簡便に第１の壁１３１と第２の壁１３３に取り付けられる。 The first flat surface portion 143a may be attached to the first groove portion 131c by welding, and the second flat surface portion 143b may be attached to the second groove portion 133c by welding. At this time, the first groove portion 131c and the second groove portion 133c facing the welded portion may be provided with the first hole portion 139a and the second hole portion 139b at positions corresponding to the welded portion. .. More specifically, as shown in FIG. 8, the reinforcing member 140 is provided with a first hole portion 139a in the first groove portion 131c facing the second flat surface portion 143b, and the second groove portion facing the first flat surface portion 143a. The 133c may be provided with a second hole 139b. The first hole portion 139a and the second hole portion 139b have an opening area sufficient for a welding tool (for example, a welding gun at the time of spot welding) to pass through. The first hole portion 139a and the second hole portion 139b improve the workability at the time of spot welding, and the reinforcing member 140 is easily attached to the first wall 131 and the second wall 133.

また、補強部材１４０は、図８におけるＸ方向視で波形状を有していてもよい。すなわち、補強部材１４０は、第１の壁１３１の第１の溝部１３１ｃと、第２の壁１３３の第２の溝部１３３ｃが対向する方向（図８のＺ方向）に沿って振幅を有する波形状を有していてもよい。これにより、壁部１４１と第１の平面部１４３ａと第２の平面部１４３ｂの数を多くすることができ、補強部材１４０による、第１の溝部１３１ｃと第２の溝部１３３ｃ同士の連結を効率的かつ強固に行うことができる。このとき、補強部材１４０の溶接個所Ｗは、補強部材１４０の所定の波長Ｌの半分に対応する間隔で形成されてもよい。すなわち、補強部材１４０は、振幅が最大となる半波長位置であるＬ／２ごとに、第１の壁１３１の第１の溝部１３１ｃと、第２の壁１３３の第２の溝部１３３ｃと交互に溶接されている。 Further, the reinforcing member 140 may have a wave shape in the X-direction view in FIG. That is, the reinforcing member 140 has a wave shape having an amplitude along the direction (Z direction in FIG. 8) in which the first groove portion 131c of the first wall 131 and the second groove portion 133c of the second wall 133 face each other. May have. As a result, the number of the wall portion 141, the first flat surface portion 143a, and the second flat surface portion 143b can be increased, and the connection between the first groove portion 131c and the second groove portion 133c by the reinforcing member 140 is efficient. It can be done objectively and firmly. At this time, the welded portions W of the reinforcing member 140 may be formed at intervals corresponding to half of the predetermined wavelength L of the reinforcing member 140. That is, the reinforcing member 140 alternately alternates between the first groove 131c of the first wall 131 and the second groove 133c of the second wall 133 for each L / 2 at the half-wavelength position where the amplitude is maximum. It is welded.

さらに、第１の孔部１３９ａは、第２の接合部１４５ｂの間隔に対応するように第１の溝部１３１ｃに設けられている。また、第２の孔部１３９ｂは、第１の接合部１４５ａの間隔に対応するように第２の溝部１３３ｃに設けられている。すなわち、第１の孔部１３９ａと第２の孔部１３９ｂは、補強部材１４０の振幅が最大となる半波長位置であるＬ／２ごとに、第１の壁１３１の第１の溝部１３１ｃと、第２の壁１３３の第２の溝部１３３ｃに交互に設けられている。 Further, the first hole portion 139a is provided in the first groove portion 131c so as to correspond to the distance between the second joint portions 145b. Further, the second hole portion 139b is provided in the second groove portion 133c so as to correspond to the distance between the first joint portions 145a. That is, the first hole portion 139a and the second hole portion 139b have the first groove portion 131c of the first wall 131 and the first groove portion 131c of the first wall 131 for each L / 2 at the half wavelength position where the amplitude of the reinforcing member 140 is maximized. The second groove portions 133c of the second wall 133 are alternately provided.

［構造部材の変形］
次に、図１０を参照して、本実施形態に係る構造部材１００に荷重がかかったときの変形の様子について説明する。図１０は、本実施形態に係る構造部材１００に荷重がかかったときの変形の様子を模式的に示す図である。図１０に示すように、例えば荷重Ｆが第１の部材１１０の天板部１１１に入力され、変形が進むと、第１の部材１１０は、大きく変形し、特に縦壁部１１３が著しく面外変形している。一方、第２の部材１２０も大きく変形しているが、第１の部材１１０と比較すれば、変形はある程度抑制されている。また、第１の壁１３１と第２の壁１３３の第１の部材１１０側は、ほぼ圧潰し、第１の壁１３１と第２の壁１３３の第２の部材１２０側も部分的に変形している。[Deformation of structural members]
Next, with reference to FIG. 10, the state of deformation when a load is applied to the structural member 100 according to the present embodiment will be described. FIG. 10 is a diagram schematically showing a state of deformation when a load is applied to the structural member 100 according to the present embodiment. As shown in FIG. 10, for example, when a load F is input to the top plate portion 111 of the first member 110 and the deformation progresses, the first member 110 is greatly deformed, and in particular, the vertical wall portion 113 is significantly out of plane. It is deformed. On the other hand, the second member 120 is also greatly deformed, but the deformation is suppressed to some extent as compared with the first member 110. Further, the first member 110 side of the first wall 131 and the second wall 133 is almost crushed, and the second member 120 side of the first wall 131 and the second wall 133 is also partially deformed. ing.

ここで、本実施形態においては、第１の壁１３１と第２の壁１３３は、図５Ｂに示したような第１の壁１３１と第２の壁１３３が全体としてＺ方向へ倒れるような変形を示していない。これは、第１の孔部１３９ａが、第２の接合部１４５ｂに対応する位置に一定の間隔で設けられ、第２の孔部１３９ｂが第１の接合部１４５ａに対応する位置に一定の間隔で設けられていることによる。すなわち、第１の孔部１３９ａと第２の孔部１３９ｂが、均等に設けられていることで、荷重Ｆにより第１の壁１３１と第２の壁１３３に生じる曲げモーメントの影響が、第１の壁１３１と、第２の壁１３３との間で互いに打ち消し合うと考えられる。すなわち、荷重Ｆにより第１の壁１３１に生じる曲げモーメントと、第２の壁１３３に生じる曲げモーメントとが互いに反対であり、打ち消し合うように働く。この結果、第１の壁１３１と第２の壁１３３において、図９におけるＺ方向に倒れる変形が抑制され、変形が安定化する効果が生じたと考えられる。 Here, in the present embodiment, the first wall 131 and the second wall 133 are deformed so that the first wall 131 and the second wall 133 as shown in FIG. 5B fall in the Z direction as a whole. Does not show. This is because the first hole portion 139a is provided at a position corresponding to the second joint portion 145b at a constant interval, and the second hole portion 139b is provided at a position corresponding to the first joint portion 145a at a constant interval. By being provided in. That is, since the first hole portion 139a and the second hole portion 139b are evenly provided, the influence of the bending moment generated on the first wall 131 and the second wall 133 by the load F is the first. It is considered that the wall 131 and the second wall 133 cancel each other out. That is, the bending moment generated in the first wall 131 and the bending moment generated in the second wall 133 due to the load F are opposite to each other and work to cancel each other out. As a result, it is considered that the first wall 131 and the second wall 133 are suppressed from being tilted in the Z direction in FIG. 9, and the deformation is stabilized.

（作用効果）
本実施形態によれば、補強部材１４０により、第１の溝部１３１ｃと第２の溝部１３３ｃ同士が接触するまでの第１の壁１３１と第２の壁１３３の変形が抑制される。これにより、第１の壁１３１と第２の壁１３３の変形が部分的に抑制され、耐荷重が向上するとともに、一方、第１の部材１１０側の変形が進行し、変形能が向上する。この結果、構造部材１００の衝撃吸収特性が向上する。以上、第２の実施形態に係る構造部材１００について説明した。(Action effect)
According to the present embodiment, the reinforcing member 140 suppresses deformation of the first wall 131 and the second wall 133 until the first groove 131c and the second groove 133c come into contact with each other. As a result, the deformation of the first wall 131 and the second wall 133 is partially suppressed and the load capacity is improved, while the deformation of the first member 110 side progresses and the deformability is improved. As a result, the shock absorption characteristics of the structural member 100 are improved. The structural member 100 according to the second embodiment has been described above.

なお、補強部材１４０の形状は、第１の溝部１３１ｃと第２の溝部１３３ｃ同士が接触するまでの第１の溝部１３１ｃと第２の溝部１３３ｃの変形を抑制できればよく、特に限定されない。例えば、補強部材１４０は、中空もしくは中実の棒状、板状、または中空もしくは中実の箱形状の部材であり、第１の溝部１３１ｃと第２の溝部１３３ｃの間に構造部材１００の軸方向（図６におけるＹ方向）に沿って設けられてもよい。すなわち、補強部材１４０が、第１の溝部１３１ｃと第２の溝部１３３ｃの間に配置され、かつ、第１の溝部１３１ｃまたは第２の溝部１３３ｃに接合されていれば、第２の実施形態のように衝撃吸収特性を向上させることができる。また、補強部材１４０の材質は、鋼材、軽金属、繊維強化樹脂、または、軟質もしくは硬質樹脂等であってもよい。 The shape of the reinforcing member 140 is not particularly limited as long as it can suppress the deformation of the first groove portion 131c and the second groove portion 133c until the first groove portion 131c and the second groove portion 133c come into contact with each other. For example, the reinforcing member 140 is a hollow or solid rod-shaped, plate-shaped, or hollow or solid box-shaped member, in the axial direction of the structural member 100 between the first groove portion 131c and the second groove portion 133c. It may be provided along (Y direction in FIG. 6). That is, if the reinforcing member 140 is arranged between the first groove portion 131c and the second groove portion 133c and is joined to the first groove portion 131c or the second groove portion 133c, the second embodiment As such, the shock absorption characteristics can be improved. Further, the material of the reinforcing member 140 may be a steel material, a light metal, a fiber reinforced resin, a soft or hard resin, or the like.

なお、補強部材１４０の波形状は、矩形波状に限定されない。例えば、補強部材１４０の波形状は、変形特性に応じて、種々の波長、位相または振幅を有する波形状を採り得る。 The wave shape of the reinforcing member 140 is not limited to the rectangular wave shape. For example, the wave shape of the reinforcing member 140 may take a wave shape having various wavelengths, phases or amplitudes depending on the deformation characteristics.

＜３．第３の実施形態＞
次に、図１１～図１２を参照しながら、第３の実施形態に係る構造部材１００について説明する。図１１は、第３の実施形態に係る構造部材の軸方向の断面構造の一例を示す図である。図１２は、同実施形態に係る構造部材の断面構造の一例を示す、図１１におけるＩＶ－ＩＶ’端面図である。本実施形態の構造部材１００は、第１の壁１３１と、第２の壁１３３と、二つの第３の壁１５０を備えている。第３の壁１５０は、構造部材１００の軸方向（Ｙ方向）に延在している。本実施形態の第３の壁１５０は板形状である。本実施形態においては、第３の壁１５０のＺ方向の端部１５０ａ、１５０ｂのうち、端部１５０ａは第１の溝部１３１ｃに接合されることで互いに繋がっており、端部１５０ｂは第２の溝部１３３ｃに接合されることで互いに繋がっている。第１の溝部１３１ｃと第２の溝部１３３ｃに対する第３の壁１５０の接合方法は特に限定されない。<3. Third Embodiment>
Next, the structural member 100 according to the third embodiment will be described with reference to FIGS. 11 to 12. FIG. 11 is a diagram showing an example of an axial cross-sectional structure of the structural member according to the third embodiment. FIG. 12 is an IV-IV'end plan view in FIG. 11 showing an example of the cross-sectional structure of the structural member according to the same embodiment. The structural member 100 of the present embodiment includes a first wall 131, a second wall 133, and two third walls 150. The third wall 150 extends in the axial direction (Y direction) of the structural member 100. The third wall 150 of the present embodiment has a plate shape. In the present embodiment, of the Z-direction end portions 150a and 150b of the third wall 150, the end portions 150a are connected to each other by being joined to the first groove portion 131c, and the end portion 150b is the second end portion 150b. They are connected to each other by being joined to the groove portion 133c. The method of joining the third wall 150 to the first groove portion 131c and the second groove portion 133c is not particularly limited.

本実施形態の構造部材１００においては、第３の壁１５０が設けられていることによって、第２の実施形態の構造部材１００と同様に第１の溝部１３１ｃと第２の溝部１３３ｃが接触するまでの第１の壁１３１と第２の壁１３３の変形が抑制される。これにより、第１の壁１３１と第２の壁１３３の変形が部分的に抑制され、耐荷重を向上させることができ、衝撃吸収特性が向上する。 In the structural member 100 of the present embodiment, since the third wall 150 is provided, until the first groove portion 131c and the second groove portion 133c come into contact with each other as in the case of the structural member 100 of the second embodiment. Deformation of the first wall 131 and the second wall 133 is suppressed. As a result, the deformation of the first wall 131 and the second wall 133 is partially suppressed, the load capacity can be improved, and the impact absorption characteristics are improved.

構造部材１００は、図１１のように第３の壁１５０を複数備えていることが好ましい。第３の壁１５０が一つだけ設けられている場合には、構造部材１００への荷重入力時に、例えば第３の壁１５０の端部１５０ａを回転中心とした曲げモーメントが発生し、第１の溝部１３１ｃと第２の溝部１３３ｃ同士が接触するまでの変形を抑制する効果が小さい。一方、第３の壁１５０が二つ以上設けられていれば、一つの第３の壁１５０で生じる上記のような曲げモーメントによる変形を他の第３の壁１５０で抑制することができる。これにより、第１の溝部１３１ｃと第２の溝部１３３ｃが接触するまでの第１の壁１３１と第２の壁１３３の変形強度が大きくなり、耐荷重が向上する。 It is preferable that the structural member 100 includes a plurality of third walls 150 as shown in FIG. When only one third wall 150 is provided, a bending moment centered on the end 150a of the third wall 150, for example, is generated when a load is input to the structural member 100, and the first wall 150 is provided. The effect of suppressing deformation until the groove portion 131c and the second groove portion 133c come into contact with each other is small. On the other hand, if two or more third walls 150 are provided, the deformation due to the bending moment as described above that occurs in one third wall 150 can be suppressed by the other third wall 150. As a result, the deformation strength of the first wall 131 and the second wall 133 until the first groove 131c and the second groove 133c come into contact with each other increases, and the load capacity is improved.

本実施形態の第３の壁１５０は、構造部材１００の第１の面に対して傾斜していたが、第１の面に平行であってもよい。また、本実施形態の第３の壁１５０の形状が板形状であったが、第３の壁１５０の形状は特に限定されない。第３の壁１５０の材質は、鋼材、軽金属、繊維強化樹脂、または、軟質もしくは硬質樹脂等であってもよい。 The third wall 150 of the present embodiment is inclined with respect to the first surface of the structural member 100, but may be parallel to the first surface. Further, although the shape of the third wall 150 of the present embodiment is a plate shape, the shape of the third wall 150 is not particularly limited. The material of the third wall 150 may be a steel material, a light metal, a fiber reinforced resin, a soft or hard resin, or the like.

構造部材１００について性能を確認するため、構造部材１００に対し、３点曲げのシミュレーションを実施した。比較例１は、第１の部材１１０と第２の部材１２０のみからなる構造部材とした。また、比較例２は、溝部を有さない第１の壁と第２の壁を有する構造部材とした。実施例１は、前述の第１の実施形態に係る構造部材１００とした。 In order to confirm the performance of the structural member 100, a three-point bending simulation was performed on the structural member 100. In Comparative Example 1, a structural member composed of only the first member 110 and the second member 120 was used. Further, in Comparative Example 2, a structural member having a first wall and a second wall having no groove was used. In the first embodiment, the structural member 100 according to the first embodiment described above was used.

比較例１の第１の部材と第２の部材とは、いずれも引張強度で９８０ＭＰａ級の板厚１．８ｍｍの鋼板とした。比較例２の第１の部材と第２の部材とは引張強度で９８０ＭＰａ級の板厚１．４ｍｍの鋼板とし、補強部材は引張強度で９８０ＭＰａ級の板厚１．６ｍｍの鋼板とした。実施例は、比較例２と同じ鋼板で構成されるものとした。 The first member and the second member of Comparative Example 1 were both steel plates having a tensile strength of 980 MPa and a plate thickness of 1.8 mm. The first member and the second member of Comparative Example 2 were steel plates having a tensile strength of 980 MPa class and a plate thickness of 1.4 mm, and the reinforcing members were steel plates having a tensile strength of 980 MPa class and a plate thickness of 1.6 mm. The example was made of the same steel plate as in Comparative Example 2.

３点曲げ試験のシミュレーション条件について、図１３Ａおよび図１３Ｂを参照しながら説明する。図１３Ａおよび図１３Ｂは、シミュレーション解析の条件の一例を説明するための図である。すなわち、図１３Ａに示すように、３点曲げの圧子Ｐ（ポール）の直径φは、２５４ｍｍとし、ポールを所定の速度で構造部材の第１の部材１１０の荷重入力面１１１に向けて移動させた（図中矢印参照）。構造部材の第２の部材１２０側の２つの剛体支持点Ｇ１、Ｇ２の間隔ｔは３００ｍｍとし、２つの剛体支持点Ｇ１、Ｇ２の中間点にポールを衝突させた。ポールと構造部材との間に発生する荷重およびポール中央位置での第１の部材１１０への背面侵入量（δｂ）を計測した。 The simulation conditions of the three-point bending test will be described with reference to FIGS. 13A and 13B. 13A and 13B are diagrams for explaining an example of the conditions for simulation analysis. That is, as shown in FIG. 13A, the diameter φ of the indenter P (pole) for three-point bending is 254 mm, and the pole is moved at a predetermined speed toward the load input surface 111 of the first member 110 of the structural member. (See the arrow in the figure). The distance t between the two rigid body support points G1 and G2 on the second member 120 side of the structural member was set to 300 mm, and the pole was made to collide with the intermediate point between the two rigid body support points G1 and G2. The load generated between the pole and the structural member and the amount of back penetration (δb) into the first member 110 at the center position of the pole were measured.

ここで、背面侵入量δｂは構造部材の荷重入力面とは反対側への侵入量の評価値であり、この値が小さいほど、構造部材の荷重入力面とは反対側への侵入量が抑制されていることを意味する。具体的には、図１３Ｂに示すように、ポール衝突前の第２の部材１２０の天板部（２つの剛体支持点で支持される面）の荷重入力方向の初期位置と、変形に伴う第２の部材１２０の天板部の荷重入力方向の位置との差である。 Here, the back surface intrusion amount δb is an evaluation value of the intrusion amount of the structural member to the side opposite to the load input surface, and the smaller this value is, the more the intrusion amount of the structural member to the side opposite to the load input surface is suppressed. It means that it has been done. Specifically, as shown in FIG. 13B, the initial position in the load input direction of the top plate portion (the surface supported by the two rigid body support points) of the second member 120 before the pole collision, and the first position due to deformation. It is a difference from the position of the top plate portion of the member 120 of 2 in the load input direction.

図１４Ａは、３点曲げシミュレーションにおける構造部材のポール変位と背面侵入量比の関係を示すグラフである。背面侵入量（δｂ）比は、各測定結果を比較例１の背面侵入量δｂの最大値で規格化した値である。図１４Ａに示すように、比較例１に比べ、凹部のない補強部材を有する比較例２は、背面侵入量（δｂ）比が２倍程度になっており、荷重入力面と反対側に構造部材が大きく侵入した。一方、本実施形態に係る第１の壁１３１と第２の壁１３３を有する実施例１は、比較例１と同程度の背面侵入量（δｂ）比であった。従って、本実施形態に係る構造部材１００は、荷重入力面１１１と反対側への侵入量が抑制されることが示された。さらに、実施例の構造部材１００の板厚が、１．６ｍｍであり、比較例１の板厚は１．８ｍｍであったことから、本実施形態に係る構造部材１００は、軽量化を実現できることも示された。 FIG. 14A is a graph showing the relationship between the pole displacement of the structural member and the back penetration amount ratio in the three-point bending simulation. The back penetration amount (δb) ratio is a value obtained by normalizing each measurement result with the maximum value of the back penetration amount δb of Comparative Example 1. As shown in FIG. 14A, compared to Comparative Example 1, Comparative Example 2 having a reinforcing member having no recess has a back surface penetration amount (δb) ratio of about twice, and the structural member is on the opposite side to the load input surface. Invaded greatly. On the other hand, Example 1 having the first wall 131 and the second wall 133 according to the present embodiment had a back penetration amount (δb) ratio similar to that of Comparative Example 1. Therefore, it was shown that the structural member 100 according to the present embodiment suppresses the amount of penetration to the side opposite to the load input surface 111. Further, since the plate thickness of the structural member 100 of the embodiment was 1.6 mm and the plate thickness of the comparative example 1 was 1.8 mm, the structural member 100 according to the present embodiment can be reduced in weight. Was also shown.

また、図１４Ｂは、３点曲げシミュレーションにおける構造部材のポール変位と荷重比の関係を示すグラフである。荷重比は、ポール衝突時の入力荷重の測定結果を、比較例１の荷重の最大値で規格化したものである。図１４Ｂに示すように、実施例１の荷重比は、比較例１に比べ高く、耐荷重が向上した。さらに、実施例１は、溝部のない第１の壁と第２の壁を有する比較例２と同程度である。このことから本実施形態に係る構造部材１００は高い荷重で変形することが示された。 Further, FIG. 14B is a graph showing the relationship between the pole displacement of the structural member and the load ratio in the three-point bending simulation. The load ratio is a standardization of the measurement result of the input load at the time of pole collision with the maximum value of the load of Comparative Example 1. As shown in FIG. 14B, the load ratio of Example 1 was higher than that of Comparative Example 1, and the load capacity was improved. Further, Example 1 is similar to Comparative Example 2 having a first wall without a groove and a second wall. From this, it was shown that the structural member 100 according to the present embodiment is deformed by a high load.

次に、構造部材のエネルギー吸収量（ＥＡ）について評価した。ここで、エネルギー吸収量ＥＡはポール変位に対する荷重の積分値とした。エネルギー吸収量ＥＡを構造部材の質量で除し、さらに背面侵入量δｂで除したＥＡ／質量／δｂという値を評価値とし、比較する。この指標が大きいほど、高い衝撃吸収性能の質量効率と構造部材の侵入量抑制を両立した構造を意味する。比較結果を表１に示した。表１中の値は比較例１の値で規格化している。 Next, the energy absorption amount (EA) of the structural member was evaluated. Here, the energy absorption amount EA is an integral value of the load with respect to the pole displacement. The value of EA / mass / δb obtained by dividing the energy absorption amount EA by the mass of the structural member and further dividing by the back penetration amount δb is used as an evaluation value for comparison. The larger this index is, the more the mass efficiency of high impact absorption performance and the suppression of the intrusion amount of structural members are compatible with each other. The comparison results are shown in Table 1. The values in Table 1 are standardized by the values of Comparative Example 1.

Figure 0007099552000001
Figure 0007099552000001

表１に示すように、ＥＡ／質量／δｂ比の値は、比較例１、２と比較して、実施例１が著しく高かった。このことから、本実施形態に係る構造部材１００は、高い衝撃吸収性能の質量効率と背面侵入量δｂの抑制を両立していることが示された。 As shown in Table 1, the value of the EA / mass / δb ratio was significantly higher in Example 1 than in Comparative Examples 1 and 2. From this, it was shown that the structural member 100 according to the present embodiment has both the mass efficiency of high impact absorption performance and the suppression of the back penetration amount δb.

次に、構造部材１００の衝撃吸収特性に第１の壁１３１と第２の壁１３３が与える影響を評価するため、実施例１～３を比較した。実施例２は、補強部材１４０を備える構造部材１００とした。また、実施例３は、補強部材１４０を有し、さらに溶接個所に対応する位置に第１の孔部１３９ａと第２の孔部１３９ｂを備える構造部材１００とした。実施例１～３について、エネルギー吸収量（ＥＡ）比、背面侵入量（δｂ）比で比較した結果を表２に示す。ＥＡ比、δｂ比のいずれも測定結果を比較例１の値で規格化したものである。 Next, in order to evaluate the influence of the first wall 131 and the second wall 133 on the shock absorption characteristics of the structural member 100, Examples 1 to 3 were compared. In the second embodiment, the structural member 100 including the reinforcing member 140 is used. Further, in the third embodiment, the structural member 100 has the reinforcing member 140 and further has the first hole portion 139a and the second hole portion 139b at the positions corresponding to the welded portions. Table 2 shows the results of comparing Examples 1 to 3 in terms of the energy absorption amount (EA) ratio and the back penetration amount (δb) ratio. Both the EA ratio and the δb ratio are the measurement results standardized by the values of Comparative Example 1.

Figure 0007099552000002
Figure 0007099552000002

実施例２と実施例３の背面侵入量（δｂ）比は、実施例１と同程度であった。一方で、実施例２と実施例３は、実施例１に比べエネルギー吸収量（ＥＡ）比が高かった。このことから、補強部材１４０によって、構造部材１００の衝撃吸収性能が高まることが示された。また、実施例２と実施例３とを比較すると、実施例３の背面侵入量（δｂ）比が、実施例２に対して低減された。これは、第１の孔部１３９ａと第２の孔部１３９ｂが均等に配置された結果、第１の壁１３１と第２の壁１３３が倒れるように変形する曲げモーメントが抑制され、衝撃吸収効果が向上したためと考えられる。このように、第１の孔部１３９ａと第２の孔部１３９ｂを備える構造部材１００により、背面侵入量がより抑制されることが示された。 The back penetration amount (δb) ratio of Example 2 and Example 3 was about the same as that of Example 1. On the other hand, in Example 2 and Example 3, the energy absorption amount (EA) ratio was higher than that in Example 1. From this, it was shown that the reinforcing member 140 enhances the impact absorption performance of the structural member 100. Further, when Example 2 and Example 3 were compared, the back penetration amount (δb) ratio of Example 3 was reduced as compared with Example 2. This is because the first hole portion 139a and the second hole portion 139b are evenly arranged, and as a result, the bending moment in which the first wall 131 and the second wall 133 are deformed so as to fall is suppressed, and the impact absorption effect is achieved. Is thought to be due to the improvement. As described above, it was shown that the back penetration amount is further suppressed by the structural member 100 provided with the first hole portion 139a and the second hole portion 139b.

以上、添付図面を参照しながら本開示の好適な実施形態について詳細に説明したが、本開示はかかる例に限定されない。本開示の属する技術の分野における通常の知識を有する者であれば、特許請求の範囲に記載された技術的思想の範疇内において、各種の変更例または修正例に想到し得ることは明らかであり、これらについても、当然に本開示の技術的範囲に属するものと了解される。 Although the preferred embodiments of the present disclosure have been described in detail with reference to the accompanying drawings, the present disclosure is not limited to such examples. It is clear that anyone with ordinary knowledge in the field of the art to which this disclosure belongs can come up with various modifications or amendments within the scope of the technical ideas set forth in the claims. , These are also naturally understood to belong to the technical scope of the present disclosure.

例えば、上記実施形態では、第１の部材１１０をハット形状としたが、第１の部材１１０はかかる例に限定されない。第１の部材１１０は、構造部材１００を形成するための形状を有していればよく、断面視でコの字形状、円弧形状等でもよい。また、第１の部材１１０は、断面視で部分的に屈曲されてもよいし、ビード形状等の凹凸を有してもよい。 For example, in the above embodiment, the first member 110 has a hat shape, but the first member 110 is not limited to such an example. The first member 110 may have a shape for forming the structural member 100, and may have a U-shape, an arc shape, or the like in a cross-sectional view. Further, the first member 110 may be partially bent in a cross-sectional view, or may have irregularities such as a bead shape.

また、上記実施形態では、第２の部材１２０をハット形状としたが、第２の部材１２０はかかる例に限定されない。第２の部材１２０は、板状部材でもよい。すなわち、第１の部材が、断面視略ハット形状を有し、第２の部材がクロージングプレートである、いわゆる片ハット形状の構造部材１００でもよい。また、第２の部材１２０は、断面視で部分的に屈曲されてもよいし、ビード形状等の凹凸を有してもよい。 Further, in the above embodiment, the second member 120 has a hat shape, but the second member 120 is not limited to such an example. The second member 120 may be a plate-shaped member. That is, the structural member 100 having a so-called single hat shape, in which the first member has a substantially hat shape in cross-sectional view and the second member is a closing plate, may be used. Further, the second member 120 may be partially bent in a cross-sectional view, or may have irregularities such as a bead shape.

また、上記実施形態では、第１の部材１１０と第２の部材１２０とがフランジ部１１５、１２５を介して溶接されるとしたが、第１の部材１１０と第２の部材１２０の溶接位置はかかる例に限定されない。例えば、第１の部材１１０と第２の部材１２０とは、略ハット形状の縦壁部１１３、１２３の端部付近で溶接されるようにしてもよい。 Further, in the above embodiment, the first member 110 and the second member 120 are welded via the flange portions 115 and 125, but the welding position of the first member 110 and the second member 120 is It is not limited to such an example. For example, the first member 110 and the second member 120 may be welded near the ends of the substantially hat-shaped vertical wall portions 113 and 123.

また、上記実施形態において、第１の部材１１０と、第２の部材１２０の他に、構造部材１００の外形を成す部材が含まれてもよい。さらに、第１の部材１１０と第２の部材１２０との間に別の部材が、設けられてもよい。また、カバー部材により、第１の部材１１０と、第２の部材１２０とが外方から覆われてもよい。 Further, in the above embodiment, in addition to the first member 110 and the second member 120, a member forming the outer shape of the structural member 100 may be included. Further, another member may be provided between the first member 110 and the second member 120. Further, the cover member may cover the first member 110 and the second member 120 from the outside.

上記実施形態では、構造部材１００の閉断面部１０１が第１の部材１１０と第２の部材１２０で構成されていたが、閉断面部１０１は、図１５に示すように例えば角筒状の中空部材１０５で構成されていてもよい。図１５の例においては、第１の壁１３１と第２の壁１３３は構造部材１００の第１の面１１１と第２の面１２１に繋がっている。図１５の例においては、第１の壁１３１と第２の壁１３３を繋ぐ連結部１３５は、第１の面１１１である。このような構造部材１００は例えば押出成形によって製造される。中空部材１０５の材質は、例えば、引張強度で９８０ＭＰａ級の鋼材である。また、その他の材質として、例えば、その他の引張強度クラスの鋼材であってもよいし、アルミニウム基合金、マグネシウム基合金等の軽金属合金、ＣＦＲＰ等の繊維強化樹脂であってもよい。 In the above embodiment, the closed cross-section portion 101 of the structural member 100 is composed of the first member 110 and the second member 120, but the closed cross-section portion 101 is hollow, for example, in the shape of a square cylinder as shown in FIG. It may be composed of a member 105. In the example of FIG. 15, the first wall 131 and the second wall 133 are connected to the first surface 111 and the second surface 121 of the structural member 100. In the example of FIG. 15, the connecting portion 135 connecting the first wall 131 and the second wall 133 is the first surface 111. Such a structural member 100 is manufactured, for example, by extrusion molding. The material of the hollow member 105 is, for example, a steel material having a tensile strength of 980 MPa class. Further, as the other material, for example, it may be a steel material of other tensile strength class, a light metal alloy such as an aluminum base alloy or a magnesium base alloy, or a fiber reinforced resin such as CFRP.

閉断面部１０１が中空部材１０５で構成される場合、構造部材１００は、例えば図１６や図１７等に示す構造であってもよい。図１６の例における構造部材１００は、第１の壁１３１と第２の壁１３３が第１の面１１１に繋がっておらず、第１の壁１３１と第２の壁１３３は閉断面部１０１の第１の面１１１に平行な面である連結部１３５を介して繋がっている。図１７の例における構造部材１００は、図１１に示す構造と同様に第１の壁１３１と、第２の壁１３３と、複数の第３の壁１５０を備えている。 When the closed cross-section portion 101 is composed of the hollow member 105, the structural member 100 may have the structure shown in FIGS. 16 or 17, for example. In the structural member 100 in the example of FIG. 16, the first wall 131 and the second wall 133 are not connected to the first surface 111, and the first wall 131 and the second wall 133 are the closed cross-sectional portions 101. It is connected via a connecting portion 135 which is a plane parallel to the first plane 111. The structural member 100 in the example of FIG. 17 includes a first wall 131, a second wall 133, and a plurality of third walls 150, as in the structure shown in FIG.

以上のように、閉断面部１０１が中空部材１０５で構成される場合であっても、閉断面部１０１内の構造は第１～第３の実施形態のような構造が適用され得る。 As described above, even when the closed cross-section portion 101 is composed of the hollow member 105, the structure inside the closed cross-section portion 101 may be the structure as in the first to third embodiments.

１００ 構造部材
１０１ 閉断面部
１０１ａ 中間面
１０５ 中空部材
１１０ 第１の部材
１１１ 天板部（閉断面部の第１の面）
１２０ 第２の部材
１２１ 天板部（閉断面部の第２の面）
１３１ 第１の壁
１３３ 第２の壁
１３１ｃ 第１の溝部
１３３ｃ 第２の溝部
１３１ｄ 第１のフランジ
１３３ｄ 第２のフランジ
１３５ 連結部
１３９ａ 第１の孔部
１３９ｂ 第２の孔部
１４０ 補強部材
１４１ 壁部
１４３ａ 第１の平面部
１４３ｂ 第２の平面部
１４５ａ 第１の接合部
１４５ｂ 第２の接合部
１５０ 第３の壁100 Structural member 101 Closed cross-section 101a Intermediate surface 105 Hollow member 110 First member 111 Top plate (first surface of closed cross-section)
120 Second member 121 Top plate (second surface of closed cross section)
131 1st wall 133 2nd wall 131c 1st groove 133c 2nd groove 131d 1st flange 133d 2nd flange 135 Connecting part 139a 1st hole 139b 2nd hole 140 Reinforcing member 141 wall Part 143a First flat part 143b Second flat part 145a First joint part 145b Second joint part 150 Third wall

Claims (16)

閉断面部と、
前記閉断面部の内部に第１の壁と第２の壁を備え、
前記閉断面部は、第１の面と第２の面を備え、
前記第１の面と前記第２の面は、対向し、
前記第１の壁と前記第２の壁は、前記第２の面から前記第１の面に向かって延在し、
前記第１の壁と前記第２の壁は、前記閉断面部の軸方向に延在し、
前記第１の壁は、前記第２の壁に向かって突出した、前記軸方向に延在する第１の溝部を備え、
前記第２の壁は、前記第１の壁に向かって突出した、前記軸方向に延在する第２の溝部を備え、
前記第１の壁の前記第１の面側の端部と前記第２の壁の前記第１の面側の端部は、連結部を介して繋がっていて、
前記第１の壁の前記第２の面側の端部と前記第２の壁の前記第２の面側の端部は、それぞれ前記第２の面と繋がっていて、
板形状の補強部材をさらに備え、
前記補強部材は、前記第１の溝部と前記第２の溝部の間に配置され、
前記補強部材の第１面と前記第１の溝部を接合している第１の接合部を備え、
前記補強部材の第２面と前記第２の溝部を接合している第２の接合部を備える、構造部材。 With a closed cross section,
A first wall and a second wall are provided inside the closed cross section.
The closed cross section comprises a first surface and a second surface.
The first surface and the second surface face each other,
The first wall and the second wall extend from the second surface toward the first surface.
The first wall and the second wall extend in the axial direction of the closed cross section, and the first wall and the second wall extend in the axial direction.
The first wall comprises a axially extending first groove projecting towards the second wall.
The second wall comprises a second axially extending groove projecting towards the first wall.
The end of the first wall on the first surface side and the end of the second wall on the first surface side are connected via a connecting portion.
The end of the first wall on the second surface side and the end of the second wall on the second surface side are connected to the second surface, respectively.
Further equipped with a plate-shaped reinforcing member,
The reinforcing member is arranged between the first groove portion and the second groove portion.
A first joint portion for joining the first surface of the reinforcing member and the first groove portion is provided.
A structural member including a second joint portion that joins the second surface of the reinforcing member and the second groove portion. 前記第１の壁の前記第２の面側の端部に連続している第１のフランジを備え、
前記第２の壁の前記第２の面側の端部に連続している第２のフランジを備え、
前記第１のフランジと前記第２のフランジは、それぞれ前記第２の面と接合している、請求項１の構造部材。 The first wall is provided with a continuous first flange at the end of the second face side.
The second wall is provided with a continuous second flange at the end of the second face side.
The structural member according to claim 1, wherein the first flange and the second flange are joined to the second surface, respectively. 閉断面部と、
前記閉断面部の内部に第１の壁と第２の壁を備え、
前記閉断面部は、第１の面と第２の面と第３の面と第４の面とを備え、
前記第１の面と前記第２の面は、対向し、
前記第３の面と前記第４の面は、対向し、
前記第３の面と前記第４の面は、前記第２の面から前記第１の面に向かって延在し、
前記第１の壁と前記第２の壁は、前記第２の面から前記第１の面に向かって延在し、
前記第１の壁と前記第２の壁は、前記閉断面部の軸方向に延在し、
前記第１の壁は、前記第２の壁に向かって突出した、前記軸方向に延在する第１の溝部を備え、
前記第２の壁は、前記第１の壁に向かって突出した、前記軸方向に延在する第２の溝部を備え、
前記第１の壁の前記第１の面側の端部と前記第２の壁の前記第１の面側の端部は、連結部を介して繋がっていて、
前記第１の壁の前記第２の面側の端部に連続している第１のフランジを備え、
前記第２の壁の前記第２の面側の端部に連続している第２のフランジを備え、
前記第１のフランジと前記第２のフランジは、それぞれ前記第２の面と接合し、
前記第１の壁と前記第２の壁は、それぞれ前記第３の面および前記第４の面に接していない、構造部材。 With a closed cross section,
A first wall and a second wall are provided inside the closed cross section.
The closed cross-section portion comprises a first surface, a second surface, a third surface, and a fourth surface.
The first surface and the second surface face each other,
The third surface and the fourth surface face each other,
The third surface and the fourth surface extend from the second surface toward the first surface.
The first wall and the second wall extend from the second surface toward the first surface.
The first wall and the second wall extend in the axial direction of the closed cross section, and the first wall and the second wall extend in the axial direction.
The first wall comprises a axially extending first groove projecting towards the second wall.
The second wall comprises a second axially extending groove projecting towards the first wall.
The end of the first wall on the first surface side and the end of the second wall on the first surface side are connected via a connecting portion.
The first wall is provided with a continuous first flange at the end of the second face side.
The second wall is provided with a continuous second flange at the end of the second face side.
The first flange and the second flange are respectively joined to the second surface.
A structural member in which the first wall and the second wall are not in contact with the third surface and the fourth surface, respectively. 補強部材を備え、
前記補強部材は、前記第１の溝部と前記第２の溝部の間に配置され、
前記補強部材は、前記第１の溝部に接合される、請求項３の構造部材。 Equipped with reinforcing members
The reinforcing member is arranged between the first groove portion and the second groove portion.
The structural member according to claim 3, wherein the reinforcing member is joined to the first groove portion. 前記補強部材は、板形状であり、
前記補強部材の第１面と前記第１の溝部を接合している第１の接合部を備え、
前記補強部材の第２面と前記第２の溝部を接合している第２の接合部を備える、請求項４の構造部材。 The reinforcing member has a plate shape and has a plate shape.
A first joint portion for joining the first surface of the reinforcing member and the first groove portion is provided.
The structural member according to claim 4, further comprising a second joint portion that joins the second surface of the reinforcing member and the second groove portion. 前記第１の接合部は、前記補強部材の第１の平面部と前記第１の溝部を接合し、
前記第２の接合部は、前記補強部材の第２の平面部と前記第２の溝部を接合し、
前記第１の平面部と向き合う前記第２の溝部には第２の孔部があり、
前記第２の平面部と向き合う前記第１の溝部には第１の孔部がある、請求項１、２または５の構造部材。 The first joint portion joins the first flat surface portion of the reinforcing member and the first groove portion.
The second joint portion joins the second flat surface portion of the reinforcing member and the second groove portion.
The second groove portion facing the first flat surface portion has a second hole portion.
The structural member according to claim 1, 2 or 5, wherein the first groove portion facing the second flat surface portion has a first hole portion. 複数の第３の壁を備え、
前記第３の壁は、前記軸方向に延在し、
前記第３の壁の端部は、前記第１の溝部と前記第２の溝部に繋がっている、請求項３の構造部材。 With multiple third walls,
The third wall extends in the axial direction and extends.
The structural member according to claim 3, wherein the end portion of the third wall is connected to the first groove portion and the second groove portion. 前記連結部は、前記第１の面である、請求項１～７のいずれかの構造部材。 The connecting portion is the structural member according to any one of claims 1 to 7, which is the first surface. 前記連結部は、前記第１の面に平行な面である、請求項１～７のいずれかの構造部材。 The structural member according to any one of claims 1 to 7, wherein the connecting portion is a plane parallel to the first plane. 閉断面部と、
前記閉断面部の内部に第１の壁と第２の壁を備え、
前記閉断面部は、第１の面と第２の面を備え、
前記第１の面と前記第２の面は、対向し、
前記第１の壁と前記第２の壁は、前記第２の面から前記第１の面に向かって延在し、
前記第１の壁と前記第２の壁は、前記閉断面部の軸方向に延在し、
前記第１の壁は、前記第２の壁に向かって突出した、前記軸方向に延在する第１の溝部を備え、
前記第２の壁は、前記第１の壁に向かって突出した、前記軸方向に延在する第２の溝部を備え、
前記第１の壁の前記第１の面側の端部と前記第２の壁の前記第１の面側の端部は、連結部を介して繋がっていて、
前記連結部は、前記第１の面に平行な面であり、
前記第１の壁の前記第２の面側の端部に連続している第１のフランジを備え、
前記第２の壁の前記第２の面側の端部に連続している第２のフランジを備え、
前記第１のフランジと前記第２のフランジは、それぞれ前記第２の面と接合している、構造部材。 With a closed cross section,
A first wall and a second wall are provided inside the closed cross section.
The closed cross section comprises a first surface and a second surface.
The first surface and the second surface face each other,
The first wall and the second wall extend from the second surface toward the first surface.
The first wall and the second wall extend in the axial direction of the closed cross section, and the first wall and the second wall extend in the axial direction.
The first wall comprises a axially extending first groove projecting towards the second wall.
The second wall comprises a second axially extending groove projecting towards the first wall.
The end of the first wall on the first surface side and the end of the second wall on the first surface side are connected via a connecting portion.
The connecting portion is a plane parallel to the first plane.
The first wall is provided with a continuous first flange at the end of the second face side.
The second wall is provided with a continuous second flange at the end of the second face side.
A structural member in which the first flange and the second flange are joined to the second surface, respectively. 補強部材を備え、
前記補強部材は、前記第１の溝部と前記第２の溝部の間に配置され、
前記補強部材は、前記第１の溝部に接合される、請求項１０の構造部材。 Equipped with reinforcing members
The reinforcing member is arranged between the first groove portion and the second groove portion.
The structural member according to claim 10, wherein the reinforcing member is joined to the first groove portion. 複数の第３の壁を備え、
前記第３の壁は、前記軸方向に延在し、
前記第３の壁の端部は、前記第１の溝部と前記第２の溝部に繋がっている、請求項１０の構造部材。 With multiple third walls,
The third wall extends in the axial direction and extends.
The structural member according to claim 10, wherein the end portion of the third wall is connected to the first groove portion and the second groove portion. 閉断面部と、
前記閉断面部の内部に第１の壁と第２の壁を備え、
前記閉断面部は、第１の面と第２の面を備え、
前記第１の面と前記第２の面は、対向し、
前記第１の壁と前記第２の壁は、前記第２の面から前記第１の面に向かって延在し、
前記第１の壁と前記第２の壁は、前記閉断面部の軸方向に延在し、
前記第１の壁は、前記第２の壁に向かって突出した、前記軸方向に延在する第１の溝部を備え、
前記第２の壁は、前記第１の壁に向かって突出した、前記軸方向に延在する第２の溝部を備え、
前記第１の壁の前記第１の面側の端部と前記第２の壁の前記第１の面側の端部は、連結部を介して繋がっていて、
前記第１の壁の前記第２の面側の端部と前記第２の壁の前記第２の面側の端部は、それぞれ前記第２の面と繋がっていて、
前記連結部は、前記第１の面に平行な面であり、
補強部材を備え、
前記補強部材は、前記第１の溝部と前記第２の溝部の間に配置され、
前記補強部材は、前記第１の溝部に接合される、構造部材。 With a closed cross section,
A first wall and a second wall are provided inside the closed cross section.
The closed cross section comprises a first surface and a second surface.
The first surface and the second surface face each other,
The first wall and the second wall extend from the second surface toward the first surface.
The first wall and the second wall extend in the axial direction of the closed cross section, and the first wall and the second wall extend in the axial direction.
The first wall comprises a axially extending first groove projecting towards the second wall.
The second wall comprises a second axially extending groove projecting towards the first wall.
The end of the first wall on the first surface side and the end of the second wall on the first surface side are connected via a connecting portion.
The end of the first wall on the second surface side and the end of the second wall on the second surface side are connected to the second surface, respectively.
The connecting portion is a plane parallel to the first plane.
Equipped with reinforcing members
The reinforcing member is arranged between the first groove portion and the second groove portion.
The reinforcing member is a structural member joined to the first groove portion. 前記連結部は、前記第１の面と接触している、請求項９～１３のいずれかの構造部材。 The structural member according to any one of claims 9 to 13, wherein the connecting portion is in contact with the first surface. 前記第１の溝部と前記第２の溝部は、前記第１の面と前記第２の面の中間面を横切る、請求項１～１４のいずれかの構造部材。 The structural member according to any one of claims 1 to 14, wherein the first groove portion and the second groove portion cross an intermediate surface between the first surface and the second surface. 請求項１～１５のいずれかの構造部材を備え、
前記第１の面が車外側に配置され、
前記第２の面が車内側に配置されている、車体構造。 The structural member according to any one of claims 1 to 15 is provided.
The first surface is arranged on the outside of the vehicle,
A vehicle body structure in which the second surface is arranged inside the vehicle.
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US20060005503A1 (en) 2004-07-07 2006-01-12 Jeffrey Bladow Reinforced structural member and method for its manufacture
JP2011016410A (en) 2009-07-08 2011-01-27 Mazda Motor Corp Frame structure for vehicle

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