JP6237674B2 - Structural members for vehicles - Google Patents

Structural members for vehicles Download PDF

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JP6237674B2
JP6237674B2 JP2015041023A JP2015041023A JP6237674B2 JP 6237674 B2 JP6237674 B2 JP 6237674B2 JP 2015041023 A JP2015041023 A JP 2015041023A JP 2015041023 A JP2015041023 A JP 2015041023A JP 6237674 B2 JP6237674 B2 JP 6237674B2
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surface portion
structural member
vehicle
portions
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JP2016159794A (en
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栄 寺田
栄 寺田
三穂 蔵田
三穂 蔵田
貴史 遊間
貴史 遊間
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Mazda Motor Corp
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この発明は、車体の一部を構成し、車両の衝突時に荷重が作用して曲げ変形が生ずるような車両用構造部材に関する。   The present invention relates to a structural member for a vehicle that constitutes a part of a vehicle body and that undergoes a bending deformation due to a load acting upon a vehicle collision.

近年、車両の軽量化を目的として、サイドシル、バンパレインフォースメント、シャシフレームなどの車体の一部をアルミ化する技術が開発されている。
このような車両用構造部材としては、例えば、特許文献1に開示された構造がある。
In recent years, for the purpose of reducing the weight of a vehicle, a technique for making a part of a vehicle body such as a side sill, a bumper reinforcement, and a chassis frame into aluminum has been developed.
As such a vehicle structural member, for example, there is a structure disclosed in Patent Document 1.

すなわち、一定の閉断面を有するように少なくとも2つの板材(サイドシルアウタとサイドシルインナ)を接合して成る箱型構造部材(サイドシル)を補強する構成において、上記閉断面の一部にて箱型構造部材(サイドシル)の長手方向に沿って、当該箱型構造部材(サイドシル)に作用すべき荷重と平行に配置される上下一対の隔壁を設け、これら上下一対の隔壁の左右両側に張出部が形成された補強部材を、アルミニウム押出し部材で形成して、側突時の荷重を有効に受け止めると共に、軽量化を図るよう構成した箱型構造部材の補強構造が開示されている。   That is, in a configuration in which a box-shaped structural member (side sill) formed by joining at least two plate members (side sill outer and side sill inner) so as to have a constant closed cross-section is used, a box-shaped structure is formed at a part of the closed cross-section. A pair of upper and lower partition walls arranged in parallel with the load to be applied to the box-shaped structural member (side sill) is provided along the longitudinal direction of the member (side sill), and overhanging portions are provided on both left and right sides of the pair of upper and lower partition walls. A reinforcing structure for a box-shaped structural member is disclosed in which the formed reinforcing member is formed of an aluminum extruded member to effectively receive a load at the time of a side collision and to reduce the weight.

しかしながら、上述の特許文献1に開示された従来構造においては、側突荷重の入力時に、上下一対の隔壁の面外変形を抑制するには板厚を厚くするなどの重量の増加を伴うため、軽量な構造で、つまり高い重量効率で曲げ強度の向上を図るという観点において、改善の余地があった。   However, in the conventional structure disclosed in Patent Document 1 described above, when a side collision load is input, in order to suppress the out-of-plane deformation of the pair of upper and lower partition walls, an increase in weight such as increasing the plate thickness is involved. There is room for improvement in terms of improving the bending strength with a lightweight structure, that is, high weight efficiency.

特開平8−244650号公報JP-A-8-244650

そこで、この発明は、面外変形を抑制して、面内変形を促進し、曲げ強度の向上を図ることができると共に、曲げ強度および圧縮曲げ強度の向上を、高い重量効率にて達成することができる車両用構造部材の提供を目的とする。   Accordingly, the present invention can suppress out-of-plane deformation, promote in-plane deformation, improve bending strength, and achieve improved bending strength and compression bending strength with high weight efficiency. An object of the present invention is to provide a vehicle structural member.

この発明による車両用構造部材は、車体の一部を構成し、車両の衝突時に荷重が作用して曲げ変形が生ずる車両用構造部材であって、上記荷重が作用した時に圧縮方向の力が作用する第1面部と、引張方向の力が作用する第2面部と、上記第1、第2面部の間に配設され、該第1、第2面部の両端部より内方で両者を略直線的に連結する一対の第3面部とを有し、上記第1面部と上記第3面部との連結部近傍において、両者を略直線的に連結する第1連結部が設けられ、上記第2面部と上記第3面部との連結部近傍において、両者を略直線的に連結する第2連結部が設けられ、上記第1連結部は、断面視で、上記第1面部と上記第3面部との上記連結部近傍における上記第1面部の中央側に配設され、上記第2連結部は、上記第2面部と上記第3面部との上記連結部近傍における上記第2面部の中央側に配設され、上記車両用構造部材が、サイドシルの一部を構成し、該サイドシルが、サイドシルアウタとサイドシルインナとから形成される閉断面部を有し、該閉断面部内に上記車両用構造部材が配設され、上記第1面部が車幅方向外側に、上記第2面部が車幅方向内側にそれぞれ位置するよう配設され、両側の上記第3面部がそれぞれ上側および下側に位置するよう配設され、上記サイドシルアウタは、上記第1面部と平行に形成される第1平面部と、上記第1平面部に対して車幅方向外側にオフセットして形成される第2平面部とを備え、上記第1平面部および上記第2平面部はそれぞれ、上記上側の第3面部および上記下側の第3面部に対して車方向でそれぞれ重複して形成されたものである。 The structural member for a vehicle according to the present invention is a structural member for a vehicle that constitutes a part of a vehicle body and causes a bending deformation due to a load acting when the vehicle collides, and a force in the compression direction acts when the load acts. The first surface portion, the second surface portion on which a force in the tensile direction acts, and the first and second surface portions are disposed between the first and second surface portions, and both are substantially straight inward from both end portions of the first and second surface portions. A pair of third surface portions that are connected to each other, and in the vicinity of the connection portion between the first surface portion and the third surface portion, there is provided a first connection portion that connects the two substantially linearly, and the second surface portion. In the vicinity of the connecting portion between the first surface portion and the third surface portion, there is provided a second connecting portion that connects the two substantially linearly, and the first connecting portion is a sectional view of the first surface portion and the third surface portion. The second connection part is disposed on the center side of the first surface part in the vicinity of the connection part. The vehicle structural member is disposed on the center side of the second surface portion in the vicinity of the coupling portion with the three surface portions, and the vehicle structural member constitutes a part of the side sill, and the side sill is formed of a side sill outer and a side sill inner. The vehicle structural member is disposed in the closed cross section, and the first surface portion is disposed on the outer side in the vehicle width direction, and the second surface portion is disposed on the inner side in the vehicle width direction. The third surface portions on both sides are disposed on the upper side and the lower side, respectively, and the side sill outer is formed with respect to the first plane portion formed in parallel with the first surface portion and the first plane portion. and a second flat section which is formed to be offset in the vehicle width direction outer side, respectively said first planar portion and the second flat section, the third of the third surface portion and the lower side of the upper shape overlap each car width direction with respect to the surface portion It is those that have been.

上記構成によれば、上述の第1連結部と第2連結部とにより、第3面部が面外変形するのを抑制して、当該第3面部の面内変形を促進し、曲げ強度の向上を図ることができると共に、車両用構造部材の曲げ強度および圧縮曲げ強度の向上を、高い重量効率にて達成することができる。
また、上述の第1面部は第3面部と第1連結部とで面分割されるので、この面分割された第1面部の弾性座屈を抑制することもできる。
According to the above configuration, the first connecting portion and the second connecting portion described above suppress the third surface portion from being deformed out of plane, promote the in-plane deformation of the third surface portion, and improve the bending strength. In addition, the bending strength and compression bending strength of the vehicle structural member can be improved with high weight efficiency.
Moreover, since the above-mentioned 1st surface part is surface-divided by the 3rd surface part and the 1st connection part, the elastic buckling of this surface-divided 1st surface part can also be suppressed.

また、上記構成によれば、第1連結部と第2連結部とにより、第3面部が面外変形するのを抑制して、面内変形を促進するのを、第1面部を車幅方向外側に、第2面部を車幅方向内側に、各第3面部を上側、下側にそれぞれ位置するよう配設することで達成でき、サイドシルの側突荷重に対する曲げ強度と、サイドシルのスモールオーバラップ衝突(フロントサイドフレームに衝突荷重が入力されず、フロントサイドフレームよりも車幅方向外側に衝突荷重が入力されるような衝突)に対する圧縮曲げ強度とを向上させることができる。   Further, according to the above configuration, the first connecting portion and the second connecting portion suppress the third surface portion from being deformed out of plane and promote in-plane deformation. It can be achieved by arranging the second surface part on the outside, the inner side in the vehicle width direction, and the third surface parts on the upper and lower sides. The bending strength against side impact load of the side sill and the small overlap of the side sill It is possible to improve the compression bending strength against a collision (a collision in which a collision load is not input to the front side frame and a collision load is input to the outside in the vehicle width direction from the front side frame).

この発明によれば、面外変形を抑制して、面内変形を促進し、曲げ強度の向上を図ることができると共に、曲げ強度および圧縮曲げ強度の向上を、高い重量効率にて達成することができる効果がある。   According to the present invention, it is possible to suppress out-of-plane deformation, promote in-plane deformation, improve bending strength, and achieve improvement in bending strength and compression bending strength with high weight efficiency. There is an effect that can.

本発明の車両用構造部材の断面図Sectional drawing of the structural member for vehicles of this invention (a)は比較例1の車両用構造部材を示す断面図、(b)は比較例2の車両用構造部材を示す断面図(A) is sectional drawing which shows the structural member for vehicles of the comparative example 1, (b) is sectional drawing which shows the structural member for vehicles of the comparative example 2. 実施例1と比較例1の曲げ強度の重量効率の差異を示す特性図Characteristic diagram showing difference in weight efficiency of bending strength between Example 1 and Comparative Example 1 実施例1と比較例1の圧縮曲げ強度の重量効率の差異を示す特性図The characteristic figure which shows the difference of the weight efficiency of the compression bending strength of Example 1 and Comparative Example 1 曲げ強度の評価方法を示す説明図Explanatory drawing showing the evaluation method of bending strength (a)は車両用構造部材の他の実施例を示す断面図、(b)は車両用構造部材のさらに他の実施例を示す断面図、(c)は車両用構造部材のさらに他の実施例を示す断面図(A) is sectional drawing which shows the other Example of the structural member for vehicles, (b) is sectional drawing which shows the further another Example of the structural member for vehicles, (c) is another Example of the structural member for vehicles. Cross section showing an example 車両用構造部材をサイドシルに適用した実施例を示す断面図Sectional drawing which shows the Example which applied the structural member for vehicles to the side sill 車両用構造部材の適用範囲を示す車体側面図Vehicle side view showing scope of application of structural member for vehicle

面外変形を抑制して、面内変形を促進し、曲げ強度の向上を図ると共に、曲げ強度および圧縮曲げ強度の向上を、高い重量効率にて達成するという目的を、車体の一部を構成し、車両の衝突時に荷重が作用して曲げ変形が生ずる車両用構造部材であって、上記荷重が作用した時に圧縮方向の力が作用する第1面部と、引張方向の力が作用する第2面部と、上記第1、第2面部の間に配設され、該第1、第2面部の両端部より内方で両者を略直線的に連結する一対の第3面部とを有し、上記第1面部と上記第3面部との連結部近傍において、両者を略直線的に連結する第1連結部が設けられ、上記第2面部と上記第3面部との連結部近傍において、両者を略直線的に連結する第2連結部が設けられ、上記第1連結部は、断面視で、上記第1面部と上記第3面部との上記連結部近傍における上記第1面部の中央側に配設され、上記第2連結部は、上記第2面部と上記第3面部との上記連結部近傍における上記第2面部の中央側に配設され、上記車両用構造部材が、サイドシルの一部を構成し、該サイドシルが、サイドシルアウタとサイドシルインナとから形成される閉断面部を有し、該閉断面部内に上記車両用構造部材が配設され、上記第1面部が車幅方向外側に、上記第2面部が車幅方向内側にそれぞれ位置するよう配設され、両側の上記第3面部がそれぞれ上側および下側に位置するよう配設され、上記サイドシルアウタは、上記第1面部と平行に形成される第1平面部と、上記第1平面部に対して車幅方向外側にオフセットして形成される第2平面部とを備え、上記第1平面部および上記第2平面部はそれぞれ、上記上側の第3面部および上記下側の第3面部に対して車幅方向でそれぞれ重複して形成されるという構成にて実現した。 A part of the vehicle body is configured to suppress out-of-plane deformation, promote in-plane deformation, improve bending strength, and achieve improved bending strength and compression bending strength with high weight efficiency. A vehicle structural member in which bending deformation occurs due to a load acting upon a vehicle collision, and a first surface portion on which a compressive force is applied when the load is applied, and a second force on which a tensile force is applied. A surface portion and a pair of third surface portions that are disposed between the first and second surface portions and that connect the two substantially inwardly from both ends of the first and second surface portions; In the vicinity of the connecting portion between the first surface portion and the third surface portion, there is provided a first connecting portion for connecting the two substantially linearly, and in the vicinity of the connecting portion between the second surface portion and the third surface portion, the two are substantially omitted. second coupling portion is provided linearly connected, the first connecting portion, in cross section, the first face The second surface portion is disposed in the vicinity of the connecting portion between the second surface portion and the third surface portion. The second surface portion is disposed near the connecting portion between the second surface portion and the third surface portion. The vehicle structural member constitutes a part of a side sill, and the side sill has a closed cross section formed from a side sill outer and a side sill inner, A vehicle structural member is disposed, the first surface portion is disposed on the outer side in the vehicle width direction, the second surface portion is disposed on the inner side in the vehicle width direction, and the third surface portions on both sides are on the upper side and the lower side, respectively. The side sill outer is disposed so as to be positioned at a first plane portion formed parallel to the first surface portion, and a second plane formed offset from the first plane portion outward in the vehicle width direction. A plane portion, and the first plane portion is Each fine said second flat section was realized by configurations that Ru is formed to overlap respectively the vehicle width direction relative to the third surface portion of the third surface portion and the lower side of the upper.

この発明の一実施例を以下図面に基づいて詳述する。
図面は車両用構造部材を示し、図1は当該車両用構造部材の断面図である。なお、図1において、矢印Fは衝突荷重とその入力方向を示す。
An embodiment of the present invention will be described in detail with reference to the drawings.
The drawing shows a structural member for a vehicle, and FIG. 1 is a cross-sectional view of the structural member for a vehicle. In FIG. 1, an arrow F indicates a collision load and its input direction.

図1において、車両用構造部材10は、車体の一部を構成し、車両の衝突時に荷重が作用して曲げ変形が生ずるもので、この車両用構造部材10は、アルミニウムまたはアルミニウム合金の押出し成形部材にて構成されている。   In FIG. 1, a vehicle structural member 10 constitutes a part of a vehicle body, and a load acts upon a vehicle collision to cause bending deformation. The vehicle structural member 10 is formed by extrusion of aluminum or an aluminum alloy. It is comprised with the member.

図1に示すように、車両用構造部材10は、上述の衝突荷重が作用した時に圧縮方向の力が作用する直線状の第1面部11と、この第1面部11に対して平行または略平行で衝突荷重が作用した時に引張方向の力が作用する直線状の第2面部12と、上述の第1面部11と第2面部12との間に直交状に配設され、第1面部11の両端部11a,11bおよび第2面部12の両端部12a,12bよりも内方で両者11,12を略直線的に連結する複数(図1の実施例では上下一対)の第3面部13,13とを備えている。   As shown in FIG. 1, the vehicle structural member 10 includes a linear first surface portion 11 on which a force in the compression direction acts when the above-described collision load is applied, and parallel or substantially parallel to the first surface portion 11. Between the linear second surface portion 12 on which a force in the tensile direction acts when a collision load is applied, and the first surface portion 11 and the second surface portion 12 described above. A plurality of (a pair of upper and lower surfaces in the embodiment of FIG. 1) third surface portions 13 and 13 that connect both ends 11 and 12 substantially linearly inward of both end portions 11a and 11b and both end portions 12a and 12b of the second surface portion 12. And.

ここで、上述の上下一対の第3面部13,13は互いに平行に配設されている。また、上述の第1面部11と第3面部13との連結により、連結部J1,J2が形成されると共に、上述の第2面部12と第3面部13との連結により、連結部J3,J4が形成されている。   Here, the above-mentioned pair of upper and lower third surface portions 13 are arranged in parallel to each other. Further, the connecting portions J1 and J2 are formed by connecting the first surface portion 11 and the third surface portion 13 described above, and the connecting portions J3 and J4 are connected by connecting the second surface portion 12 and the third surface portion 13 described above. Is formed.

さらに、上述の第1面部11と第3面部13との連結部J1,J2の近傍において、両者11,13を略直線的に連結する第1連結部14,15が設けられている。これらの第1連結部14,15のうちの一方の第1連結部14は、断面視で、第1面部11と第3面部13との連結部J1,J2近傍における第1面部11の端部11a,11b側に配設された外側の第1連結部14であって、この第1連結部14により連結部J1,J2近傍において両者13,11を斜交状に連結している。   Further, in the vicinity of the connecting portions J1 and J2 between the first surface portion 11 and the third surface portion 13 described above, first connecting portions 14 and 15 that connect the both 11 and 13 substantially linearly are provided. One of the first connecting portions 14 and 15 is an end portion of the first surface portion 11 in the vicinity of the connecting portions J1 and J2 between the first surface portion 11 and the third surface portion 13 in a cross-sectional view. It is the 1st connection part 14 of the outer side arrange | positioned by 11a, 11b side, Comprising: Both these 13 and 11 are connected in diagonal form by this 1st connection part 14 in the connection part J1, J2 vicinity.

上述の第1連結部14,15のうちの他方の第1連結部15は、断面視で、第1面部11と第3面部13との連結部J1,J2近傍における第1面部11の反端部側、つまり、第1面部11の中央側に配設された内側の第1連結部15であって、この第1連結部15により連結部J1,J2近傍において両者13,11を斜交状に連結している。   The other first connecting portion 15 of the first connecting portions 14 and 15 is the opposite end of the first surface portion 11 in the vicinity of the connecting portions J1 and J2 between the first surface portion 11 and the third surface portion 13 in a cross-sectional view. A first connecting portion 15 disposed on the side of the portion, that is, on the center side of the first surface portion 11, and the first connecting portion 15 obliquely crosses both the portions 13 and 11 in the vicinity of the connecting portions J1 and J2. It is linked to.

そして、第3面部13の外側に位置する第1連結部14を設けることで、各要素11,13,14によって形成される三角形状部T1,T1と、各要素11,13,14により囲繞された直角三角形状の閉断面部s1,s1とが形成されている。   And by providing the 1st connection part 14 located in the outer side of the 3rd surface part 13, it is surrounded by triangular part T1, T1 formed by each element 11,13,14 and each element 11,13,14. In addition, closed cross-section portions s1 and s1 having a right triangle shape are formed.

同様に、第3面部13の内側に位置する第1連結部15を設けることで、各要素11,13,15によって形成される三角形状部T2,T2と、各要素11,13,15により囲繞された直角三角形状の閉断面部s2,s2とが形成されている。   Similarly, by providing the first connecting portion 15 located inside the third surface portion 13, the triangular portions T <b> 2 and T <b> 2 formed by the elements 11, 13, 15 and the elements 11, 13, 15 surround the The right-angled triangular closed cross-section portions s2 and s2 are formed.

さらに、上述の第2面部12と第3面部13との連結部J3,J4の近傍において、両者12,13を略直線的に連結する第2連結部16,17が設けられている。これらの第2連結部16,17のうちの一方の第2連結部16は、断面視で、第2面部12と第3面部13との連結部J3,J4近傍における第2面部12の端部12a,12b側に配設された外側の第2連結部16であって、この第2連結部16により連結部J3,J4近傍において両者13,12を斜交状に連結している。   Further, in the vicinity of the connecting portions J3 and J4 between the second surface portion 12 and the third surface portion 13 described above, second connecting portions 16 and 17 are provided for connecting both the portions 12 and 13 substantially linearly. One of the second connecting portions 16 and 17 is, in cross-sectional view, the end portion of the second surface portion 12 in the vicinity of the connecting portions J3 and J4 between the second surface portion 12 and the third surface portion 13. The outer second connecting portion 16 is disposed on the side of 12a and 12b, and the second connecting portion 16 connects both the portions 13 and 12 obliquely in the vicinity of the connecting portions J3 and J4.

上述の第2連結部16,17のうちの他方の第2連結部17は、断面視で、第2面部12と第3面部13との連結部J3,J4近傍における第2面部12の反端部側、つまり、第2面部12の中央側に配設された内側の第2連結部17であって、この第2連結部17により連結部J3,J4近傍において両者13,12を斜交状に連結している。   The other second connecting portion 17 of the second connecting portions 16 and 17 is the opposite end of the second surface portion 12 in the vicinity of the connecting portions J3 and J4 between the second surface portion 12 and the third surface portion 13 in a cross-sectional view. The second connecting portion 17 on the inner side, that is, the inner side of the second surface portion 12, and the second connecting portion 17 obliquely crosses both the portions 13 and 12 in the vicinity of the connecting portions J3 and J4. It is linked to.

そして、第3面部13の外側に位置する第2連結部16を設けることで、各要素12,13,16によって形成される三角形状部T3,T3と、各要素12,13,16により囲繞された直角三角形状の閉断面部s3,s3とが形成されている。   And by providing the 2nd connection part 16 located in the outer side of the 3rd surface part 13, it is surrounded by triangular part T3, T3 formed by each element 12,13,16 and each element 12,13,16. A right-angled triangular closed section s3, s3 is formed.

同様に、第3面部13の内側に位置する第2連結部17を設けることで、各要素12,13,17によって形成される三角形状部T4,T4と、各要素12,13,17により囲繞された直角三角形状の閉断面部s4,s4とが形成されている。   Similarly, by providing the second connecting portion 17 located inside the third surface portion 13, the triangular portions T4 and T4 formed by the elements 12, 13, and 17 and the elements 12, 13, and 17 The right-angled triangular closed cross-section portions s4 and s4 are formed.

要するに、図1で示す実施例においては、上述の第1連結部14,15が、断面視で、第1面部11と第3面部13との連結部J1,J2近傍の両側に配設されると共に、上述の第2連結部16,17も、断面視で、第2面部12と第3面部13との連結部J3,J4近傍の両側に配設されたものである。   In short, in the embodiment shown in FIG. 1, the first connecting portions 14 and 15 are disposed on both sides in the vicinity of the connecting portions J1 and J2 between the first surface portion 11 and the third surface portion 13 in a cross-sectional view. In addition, the above-described second connecting portions 16 and 17 are also arranged on both sides in the vicinity of the connecting portions J3 and J4 between the second surface portion 12 and the third surface portion 13 in a cross-sectional view.

さらに、図1に示すように、この実施例においては、第1面部11、第2面部12、第3面部13,13および、第1、第2の各連結部15,17で囲繞された横長八角形状の閉断面部s5が形成されており、この閉断面部s5は直角三角形状の各閉断面部s1〜s4に対して断面積が相対的に大きくなるよう設定されている。   Further, as shown in FIG. 1, in this embodiment, the first and second surface portions 11, 12, 13, 13 and first and second connecting portions 15, 17 are horizontally long. An octagonal closed cross-section s5 is formed, and the closed cross-section s5 is set to have a relatively large cross-sectional area with respect to each of the right-triangular closed cross-sections s1 to s4.

特に、この実施例においては、上述の第1連結部14,15のうちの少なくとも何れか一方と、上述の第2連結部16,17のうちの少なくとも何れか一方とにより、第3面部13が面外変形するのを抑制して、当該第3面部13の面内変形を促進し、曲げ強度の向上を図るように構成したものである。ここに、面外変形とは、部材がその平面と垂直な方向へ曲げ変形されることで、面外曲げとも云われる。また、面内変形とは、部材が、その部材の含む平面内において曲げ変形されることで、面内曲げとも云われる。   In particular, in this embodiment, the third surface portion 13 is formed by at least one of the first connecting portions 14 and 15 and at least one of the second connecting portions 16 and 17. It is configured to suppress the out-of-plane deformation, promote the in-plane deformation of the third surface portion 13, and improve the bending strength. Here, the out-of-plane deformation is also called out-of-plane bending because the member is bent and deformed in a direction perpendicular to the plane. The in-plane deformation is also referred to as in-plane bending because a member is bent and deformed in a plane included in the member.

図1で示した実施例の車両用構造部材10(実施例1とする)と、図2の(a)に示す比較例1の車両用構造部材60と、図2の(b)に示す比較例2の車両用構造部材70との曲げ強度の重量効率および圧縮曲げ強度の重量効率とを比較する。   The vehicle structural member 10 of the embodiment shown in FIG. 1 (referred to as Embodiment 1), the vehicle structural member 60 of Comparative Example 1 shown in FIG. 2A, and the comparison shown in FIG. 2B. The weight efficiency of the bending strength and the weight efficiency of the compression bending strength with the vehicle structural member 70 of Example 2 are compared.

図2の(a)に示す比較例1の車両用構造部材60は、実施例1(図1参照)のものに対して第1連結部14,15および第2連結部16,17が存在しないものである。   The vehicle structural member 60 of the comparative example 1 shown in FIG. 2A does not have the first connecting portions 14 and 15 and the second connecting portions 16 and 17 with respect to those of the first embodiment (see FIG. 1). Is.

図2の(b)に示す比較例2の車両用構造部材70は、実施例1(図1参照)のものに対して第1連結部14,15および第2連結部16,17が存在しないうえ、第1面部11および第2面部12の各連結部J1,J2,J3,J4よりも端部側の部材が存在しないもので、単純な方形枠状の構造部材である。なお、図2の(a)、(b)において、図1と同一の部分には図示の便宜上、同一符号を付している。   The vehicle structural member 70 of the comparative example 2 shown in FIG. 2B does not have the first connecting portions 14 and 15 and the second connecting portions 16 and 17 with respect to those of the first embodiment (see FIG. 1). In addition, there is no member on the end side of each of the connecting portions J1, J2, J3, and J4 of the first surface portion 11 and the second surface portion 12, and it is a simple rectangular frame-shaped structural member. 2A and 2B, the same parts as those in FIG. 1 are denoted by the same reference numerals for convenience of illustration.

図5は曲げ強度の評価方法を示す説明図であって、剛体で変形しない一対の支持点部材18,19と同様に、剛体で変形しない一対の負荷点部材20,21とを設け、上述の一対の支持点部材18,19の上部に車両用構造部材(実施例1の車両用構造部材10、または、比較例1の車両用構造部材60、または比較例2の車両用構造部材70)の第2面部12の両端部が位置するよう上載し、一対の負荷点部材20,21を離間させて、これら各負荷点部材20,21で車両用構造部材(10,60または70)の第1面部11に対して、図5の矢印方向に曲げ荷重を与え、荷重および、たわみを測定して、曲げに関する試験を行なうものである。   FIG. 5 is an explanatory view showing a method for evaluating bending strength. Like the pair of support point members 18 and 19 which are not deformed by a rigid body, a pair of load point members 20 and 21 which are not deformed by a rigid body are provided. A vehicle structural member (the vehicle structural member 10 according to the first embodiment, the vehicle structural member 60 according to the first comparative example, or the vehicle structural member 70 according to the second comparative example) is disposed above the pair of support point members 18 and 19. It mounts so that the both ends of the 2nd surface part 12 may be located, a pair of load point members 20 and 21 are spaced apart, and the 1st of vehicle structural members (10, 60, or 70) is each separated by these load point members 20 and 21. A bending test is applied to the surface portion 11 by applying a bending load in the direction of the arrow in FIG. 5 and measuring the load and deflection.

図5で示した曲げ強度の評価方法による試験結果からその重量効率を求めた結果を、図3に示す。   FIG. 3 shows the results of the weight efficiency obtained from the test results obtained by the bending strength evaluation method shown in FIG.

図3に示す曲げ強度の重量効率の特性図は、図2の(b)で示した比較例2の車両用構造部材70の当該重量効率を100%として、実施例1の車両用構造部材10と、比較例1の車両用構造部材60との曲げ強度の重量効率をそれぞれ示している。同図において、数値が大きい程、効率が高いことを表している。   The characteristic diagram of the weight efficiency of the bending strength shown in FIG. 3 shows that the weight efficiency of the vehicle structural member 70 of Comparative Example 2 shown in FIG. And the weight efficiency of bending strength with the structural member 60 for vehicles of the comparative example 1 is shown, respectively. In the figure, the larger the value, the higher the efficiency.

図3から明らかなように、実施例1の車両用構造部材10の曲げ強度の重量効率は約152%であり、比較例1の車両用構造部材60の曲げ強度の重量効率は約126%であって、実施例1のものが曲げ強度の重量効率が優れている。これは、第1連結部14,15と第2連結部16,17、特に、第1連結部14,15により、第3面部13が面外変形するのを抑制して、当該第3面部13の面内変形を促進させるからである。   As apparent from FIG. 3, the weight efficiency of the bending strength of the vehicle structural member 10 of Example 1 is about 152%, and the weight efficiency of the bending strength of the vehicle structural member 60 of Comparative Example 1 is about 126%. And the thing of Example 1 is excellent in the weight efficiency of bending strength. This suppresses the third surface portion 13 from being deformed out of plane by the first connecting portions 14 and 15 and the second connecting portions 16 and 17, particularly the first connecting portions 14 and 15, and the third surface portion 13. This is because in-plane deformation is promoted.

一方、圧縮曲げ強度の重量効率を求めた結果を、図4に示す。
図4に示す圧縮曲げ強度の重量効率の特性図は、図2の(b)で示した比較例2の車両用構造部材70の当該重量効率を100%として、実施例1の車両用構造部材10と、比較例1の車両用構造部材60との圧縮曲げ強度の重量効率をそれぞれ示している。同図において、数値が大きい程、効率が高いことを表している。
On the other hand, the result of obtaining the weight efficiency of the compression bending strength is shown in FIG.
FIG. 4 shows the characteristic of the weight efficiency of the compression bending strength, with the weight efficiency of the vehicle structural member 70 of Comparative Example 2 shown in FIG. 10 and the weight efficiency of the compression bending strength of the vehicle structural member 60 of Comparative Example 1 are shown. In the figure, the larger the value, the higher the efficiency.

図4から明らかなように、実施例1の車両用構造部材10の圧縮曲げ強度の重量効率は約183%であり、比較例1の車両用構造部材60の圧縮曲げ強度の重量効率は約112%であって、実施例1のものが圧縮曲げ強度の重量効率においても優れている。   As is clear from FIG. 4, the weight efficiency of the compression bending strength of the vehicle structural member 10 of Example 1 is about 183%, and the weight efficiency of the compression bending strength of the vehicle structural member 60 of Comparative Example 1 is about 112%. %, And that of Example 1 is also excellent in weight efficiency of compression bending strength.

このように、上記実施例の車両用構造部材は、車体の一部を構成し、車両の衝突時に荷重が作用して曲げ変形が生ずる車両用構造部材10であって、上記荷重が作用した時に圧縮方向の力が作用する第1面部11と、引張方向の力が作用する第2面部12と、上記第1、第2面部11,12の間に配設され、該第1、第2面部11,12の両端部11a,11b,12a,12bより内方で両者11,12を略直線的に連結する複数の第3面部13,13とを有し、上記第1面部11と上記第3面部13との連結部J1,J2近傍において、両者11,13を略直線的に連結する第1連結部14,15(詳しくは、これら第1連結部14,15のうちの少なくとも一方)が設けられ、上記第2面部12と上記第3面部13との連結部J3,J4近傍において、両者12,13を略直線的に連結する第2連結部16,17(詳しくは、これら第2連結部16,17のうちの少なくとも一方)が設けられたものである(図1参照)。   Thus, the vehicle structural member of the above-described embodiment is a vehicle structural member 10 that constitutes a part of the vehicle body and undergoes a bending deformation due to a load acting upon the collision of the vehicle. The first surface portion 11 on which the force in the compression direction acts, the second surface portion 12 on which the force in the tensile direction acts, and the first and second surface portions 11 and 12 are disposed, and the first and second surface portions are disposed. A plurality of third surface portions 13 and 13 that connect the both ends 11 and 12 substantially linearly inward of both end portions 11a, 11b, 12a, and 12b of the first and second portions 11 and 12; In the vicinity of the connecting portions J1 and J2 with the surface portion 13, there are provided first connecting portions 14 and 15 (specifically, at least one of the first connecting portions 14 and 15) for connecting the both 11 and 13 substantially linearly. Connecting portions J3, J between the second surface portion 12 and the third surface portion 13 In the vicinity, second connecting portions 16 and 17 (in detail, at least one of the second connecting portions 16 and 17) for connecting the both 12 and 13 substantially linearly are provided (see FIG. 1). ).

この構成によれば、上述の第1連結部14,15と第2連結部16,17とにより、第3面部13が面外変形するのを抑制して、当該第3面部13の面内変形を促進し、曲げ強度の向上を図ることができると共に、車両用構造部材10の曲げ強度および圧縮曲げ強度の向上を、高い重量効率にて達成することができる。
また、上述の第1面部11は第3面部13と第1連結部14,15とで面分割(図1の実施例では、7分割)されるので、この面分割された第1面部11の弾性座屈を抑制することもできる。
According to this configuration, the first connecting portions 14 and 15 and the second connecting portions 16 and 17 described above suppress the third surface portion 13 from being deformed out of plane, and the third surface portion 13 is deformed in the surface. The bending strength can be improved and the bending strength and the compression bending strength of the vehicle structural member 10 can be improved with high weight efficiency.
Further, since the first surface portion 11 described above is divided into planes by the third surface portion 13 and the first connecting portions 14 and 15 (in the embodiment of FIG. 1, seven divisions), Elastic buckling can also be suppressed.

この発明の一実施形態においては、上記第1連結部14,15が、断面視で、上記第1面部11と上記第3面部13との連結部J1,J2近傍の両側に配設されたものである(図1参照)。   In one embodiment of the present invention, the first connecting portions 14 and 15 are disposed on both sides in the vicinity of the connecting portions J1 and J2 between the first surface portion 11 and the third surface portion 13 in a sectional view. (See FIG. 1).

この構成によれば、第3面部13の第1面部11の端部側への面外変形を、第1連結部14による外側からの押さえと、第1連結部15による内側からの引っ張りとの両方により抑制し、さらに一層第3面部13の面外変形を抑制し、曲げ強度をより一層高めることができる。   According to this configuration, the out-of-plane deformation of the third surface portion 13 toward the end portion side of the first surface portion 11 is caused by pressing from the outside by the first connecting portion 14 and pulling from the inside by the first connecting portion 15. It is possible to suppress both, further suppress the out-of-plane deformation of the third surface portion 13, and further increase the bending strength.

図6の(a)、(b)、(c)は車両用構造部材の他の実施例を示すものである。
図6の(a)に示す車両用構造部材30は、図1で示した車両用構造部材10に対して第1連結部14,15のうちの内側に位置する第1連結部15と、第2連結部16,17のうちの内側に位置する第2連結部17とを省略したものである。
6 (a), 6 (b), and 6 (c) show another embodiment of the structural member for a vehicle.
The vehicle structural member 30 shown in FIG. 6A includes a first connection portion 15 located on the inner side of the first connection portions 14 and 15 with respect to the vehicle structural member 10 shown in FIG. The 2nd connection part 17 located inside the 2 connection parts 16 and 17 is abbreviate | omitted.

すなわち、この車両用構造部材30は、図6の(a)に示すように、第1連結部14が、断面視で、第1面部11と第3面部13との連結部J1,J2近傍における第1面部11の端部11a,11b側にのみ配設されると共に、第2連結部16が、断面視で、第2連結部12と第3面部13との連結部J3,J4近傍における第2面部12の端部12a,12b側にのみ配設されたものである。   That is, as shown in FIG. 6A, the vehicle structural member 30 has the first connecting portion 14 in the vicinity of the connecting portions J1 and J2 between the first surface portion 11 and the third surface portion 13 in a sectional view. The second connecting portion 16 is disposed only on the end portion 11a, 11b side of the first surface portion 11 and the second connecting portion 16 is in the vicinity of the connecting portions J3, J4 between the second connecting portion 12 and the third surface portion 13 in a sectional view. The two surface portions 12 are disposed only on the end portions 12a and 12b side.

特に、この実施例においては、上記第1連結部14が、断面視で、上記第1面部11と上記第3面部13との連結部J1,J2近傍における上記第1面部11の端部側にのみ配設されたものであって、この構成により、第3面部13の第1面部11の端部側への面外変形を、上記第1連結部14が外側から押さえることにより抑制し、より一層第3面部13の面外変形を抑制し、曲げ強度を高めることができるものである。   In particular, in this embodiment, the first connecting portion 14 is on the end side of the first surface portion 11 in the vicinity of the connecting portions J1 and J2 between the first surface portion 11 and the third surface portion 13 in a cross-sectional view. With this configuration, it is possible to suppress the out-of-plane deformation of the third surface portion 13 toward the end portion of the first surface portion 11 by the first connecting portion 14 being pressed from the outside. Further, out-of-plane deformation of the third surface portion 13 can be suppressed, and the bending strength can be increased.

図6の(b)に示す車両用構造部材40は、図1で示した車両用構造部材10に対して第1連結部14,15のうちの外側に位置する第1連結部14と、第2連結部16,17のうちの外側に位置する第2連結部16とを省略したものである。   The vehicle structural member 40 shown in FIG. 6B includes a first connecting portion 14 located outside the first connecting portions 14 and 15 with respect to the vehicle structural member 10 shown in FIG. The 2nd connection part 16 located outside the 2 connection parts 16 and 17 is abbreviate | omitted.

すなわち、この車両用構造部材40は、図6の(b)に示すように、第1連結部15が、断面視で、第1面部11と第3面部13との連結部J1,J2近傍における第1面部11の中央側にのみ配設されると共に、第2連結部17が、断面視で、第2面部12と第3面部13との連結部J3,J4近傍における第2面部12の中央側にのみ配設されたものである。   That is, in the vehicle structural member 40, as shown in FIG. 6B, the first connecting portion 15 is in the vicinity of the connecting portions J1 and J2 between the first surface portion 11 and the third surface portion 13 in a sectional view. The second connecting portion 17 is disposed only on the center side of the first surface portion 11 and the second connecting portion 17 is the center of the second surface portion 12 in the vicinity of the connecting portions J3 and J4 between the second surface portion 12 and the third surface portion 13 in a sectional view. It is arranged only on the side.

図6の(b)に示すこの構成によれば、特に、第3面部13の第1面部11の端部側への面外変形を、上記第1連結部15がその内側から引っ張ることにより抑制し、第3面部13の面外変形を抑えて、曲げ強度を高めることができる。   According to this configuration shown in FIG. 6B, in particular, the out-of-plane deformation of the third surface portion 13 toward the end portion of the first surface portion 11 is suppressed by the first connecting portion 15 being pulled from the inside. And the bending strength can be increased by suppressing the out-of-plane deformation of the third surface portion 13.

図6の(c)に示す車両用構造部材50は、図1で示した車両用構造部材10の上下の第3面部13,13間に、これら第3面部13,13と平行になるよう別の第3面部13´を追加形成したものである。   The vehicle structural member 50 shown in FIG. 6C is separately provided between the upper and lower third surface portions 13 and 13 of the vehicle structural member 10 shown in FIG. 1 so as to be parallel to the third surface portions 13 and 13. The third surface portion 13 'is additionally formed.

また、図6の(c)において中間に位置する第3面部13´と第1面部11との連結部J5近傍において、両者11,13´を略直線的に連結する第1連結部22,22を、当該連結部J5の両側に配設し、各要素11,13´,22によって形成される三角形状部T5と、各要素11,13´,22により囲繞された直角三角形状の閉断面部s6とを、連結部J5の両側に形成している。   Further, in the vicinity of the connecting portion J5 between the third surface portion 13 ′ and the first surface portion 11 located in the middle in FIG. 6C, the first connecting portions 22 and 22 that connect the both 11 and 13 ′ substantially linearly. Are disposed on both sides of the connecting portion J5, and a triangular portion T5 formed by the elements 11, 13 ', 22 and a right triangular closed section surrounded by the elements 11, 13', 22 s6 is formed on both sides of the connecting portion J5.

さらに、同図において中間に位置する第3面部13´と第2面部12との連結部J6近傍において、両者12,13´を略直線的に連結する第2連結部23,23を、当該連結部J6の両側に配設し、各要素12,13´,23によって形成される三角形状部T6と、各要素12,13´,23により囲繞された直角三角形状の閉断面部s7とを、連結部J6の両側に形成したものである。   Further, in the vicinity of the connecting portion J6 between the third surface portion 13 'and the second surface portion 12 positioned in the middle in the same figure, the second connecting portions 23 and 23 that connect both 12 and 13' approximately linearly are connected to the connecting portion J6. A triangular portion T6 formed on each side of the portion J6 and formed by the elements 12, 13 ′, and 23, and a right-angled triangular closed section s7 surrounded by the elements 12, 13 ′, and 23, It is formed on both sides of the connecting part J6.

このように構成すると、車両用構造部材50の曲げ強度および圧縮曲げ強度のさらなる向上を図ることができる。
なお、図6の(a)、(b)、(c)において図1と同一の部分には同一符号を付して、その詳しい説明を省略している。
If comprised in this way, the further improvement of the bending strength and compression bending strength of the structural member 50 for vehicles can be aimed at.
6 (a), (b), and (c), the same parts as those in FIG. 1 are denoted by the same reference numerals, and detailed description thereof is omitted.

図7は図1で示した車両用構造部材10をサイドシル1に採用した実施例を示すものである。
図7に示すように、上述のサイドシル1は、鋼板プレス成形部材で形成されたサイドシルアウタ2と、同様に鋼板プレス成形部材で形成されたサイドシルインナ3とを有し、サイドシルアウタ2の上下の接合フランジ部2a,2bと、サイドシルインナ3の上下の接合フランジ部3a,3bとを接合固定して、車両の前後方向に延びる閉断面部4を備えている。
FIG. 7 shows an embodiment in which the vehicle structural member 10 shown in FIG.
As shown in FIG. 7, the above-described side sill 1 includes a side sill outer 2 formed of a steel plate press-formed member and a side sill inner 3 similarly formed of a steel plate press-formed member. The joint flange portions 2a and 2b and the upper and lower joint flange portions 3a and 3b of the side sill inner 3 are joined and fixed, and a closed cross-section portion 4 extending in the front-rear direction of the vehicle is provided.

図1で示した車両用構造部材10を、車両のサイドシル1に適用する場合には、図7に示すように、上述の閉断面部4内に当該車両用構造部材10を配設する。   When the vehicle structural member 10 shown in FIG. 1 is applied to the side sill 1 of the vehicle, the vehicle structural member 10 is disposed in the closed cross section 4 as shown in FIG.

この場合、側突荷重が作用した時に圧縮方向の力が作用する第1面部11を車幅方向外側に位置させ、側突荷重が作用した時に引張方向の力が作用する第2面部12を車幅方向内側に位置させ、両側の第3面部13,13をそれぞれ上側および下側に位置させるよう車両用構造部材10が配設されている。   In this case, the first surface portion 11 on which the force in the compression direction acts when the side impact load acts is positioned on the outer side in the vehicle width direction, and the second surface portion 12 on which the force in the tension direction acts when the side impact load acts. The vehicle structural member 10 is disposed so as to be positioned on the inner side in the width direction and to position the third surface portions 13 on both sides on the upper side and the lower side, respectively.

この実施例においては、図7に示すように、サイドシルインナ3と第2面部12との間に接着剤5を介設した状態で、三角形状部T3外端と第2面部12の端部12a,12bとの間における当該第2面部12と、サイドシルインナ3とをリベット6,6にて固定すると共に、サイドシルインナ3と第2面部12の上下方向中間部とをスクリュ7で固定している。   In this embodiment, as shown in FIG. 7, the outer end of the triangular portion T <b> 3 and the end portion 12 a of the second surface portion 12 with the adhesive 5 interposed between the side sill inner 3 and the second surface portion 12. , 12b, the second surface portion 12 and the side sill inner 3 are fixed by the rivets 6 and 6, and the side sill inner 3 and the vertical intermediate portion of the second surface portion 12 are fixed by the screw 7. .

この実施例の車両用構造部材10は、従前のサイドシルレインフォースメントの機能を有するものであり、また、上述の接着剤5の介設により、サイドシルインナ3に対する車両用構造部材10の取付け強度の向上と、電食防止効果の確保との両立を図ることができる。   The vehicle structural member 10 of this embodiment has the function of a conventional side sill reinforcement, and the strength of the mounting of the vehicle structural member 10 to the side sill inner 3 is achieved by the interposition of the adhesive 5 described above. It is possible to achieve both improvement and ensuring the effect of preventing electrolytic corrosion.

このように、図7で示した実施例においては、上記車両用構造部材10が、サイドシル1の一部を構成し、該サイドシル1が、サイドシルアウタ2とサイドシルインナ3とから形成される閉断面部4を有し、該閉断面部4内に上記車両用構造部材10が配設され、上記第1面部11が車幅方向外側に、上記第2面部12が車幅方向内側にそれぞれ位置するよう配設され、両側の上記第3面部13,13がそれぞれ上側および下側に位置するよう配設されたものである(図7参照)。   Thus, in the embodiment shown in FIG. 7, the vehicle structural member 10 constitutes a part of the side sill 1, and the side sill 1 is formed of the side sill outer 2 and the side sill inner 3. The vehicle structural member 10 is disposed in the closed cross-section portion 4, the first surface portion 11 is located on the outer side in the vehicle width direction, and the second surface portion 12 is located on the inner side in the vehicle width direction. The third surface portions 13, 13 on both sides are disposed on the upper side and the lower side, respectively (see FIG. 7).

この構成によれば、第1連結部14,15と第2連結部16,17とにより、第3面部13が面外変形するのを抑制して、面内変形を促進するのを、第1面部11を車幅方向外側に、第2面部12を車幅方向内側に、各第3面部13,13を上側、下側にそれぞれ位置するよう配設することで達成でき、サイドシル1の側突荷重に対する曲げ強度と、サイドシル1のスモールオーバラップ衝突(フロントサイドフレームに衝突荷重が入力されず、フロントサイドフレームよりも車幅方向外側に衝突荷重が入力されるような衝突)に対する圧縮曲げ強度とを向上させることができる。
なお、図7において、矢印INは車幅方向の内方を示し、矢印OUTは車幅方向の外方を示し、矢印UPは車両上方を示す。
According to this configuration, the first connecting portions 14 and 15 and the second connecting portions 16 and 17 suppress the third surface portion 13 from being deformed out of plane, and promote the in-plane deformation. This can be achieved by arranging the surface portion 11 on the outer side in the vehicle width direction, the second surface portion 12 on the inner side in the vehicle width direction, and the third surface portions 13 and 13 on the upper side and the lower side, respectively. Bending strength against load and compressive bending strength against small overlap collision of side sill 1 (collision where collision load is not input to the front side frame and collision load is input outside the front side frame in the vehicle width direction) Can be improved.
In FIG. 7, the arrow IN indicates the inner side in the vehicle width direction, the arrow OUT indicates the outer side in the vehicle width direction, and the arrow UP indicates the upper side of the vehicle.

図8は車両用構造部材10の適用範囲を示す車体側面図であって、該車両用構造部材10を図7で示したようにサイドシル1に適用する場合には、図8に適用範囲αで示すように、ヒンジピラー8下部とセンタピラー9下部との間におけるストレートまたはストレートに近い範囲が適している。   FIG. 8 is a side view of the vehicle body showing the applicable range of the vehicle structural member 10. When the vehicle structural member 10 is applied to the side sill 1 as shown in FIG. As shown, a straight or a range close to a straight between the lower part of the hinge pillar 8 and the lower part of the center pillar 9 is suitable.

上記実施例においては、車両用構造部材10をサイドシル1に適用した場合を例示したが、該車両用構造部材10は、サイドシルの他に、バンパレインフォースメントやシャシーフレーム等の、断面サイズが比較的大きく(閉断面s1〜s4が押出し成形時に潰れない程度に大きいことを意味する)、かつストレートに近い車両用部材に適用することができる。   In the above embodiment, the case where the vehicle structural member 10 is applied to the side sill 1 is illustrated. However, the vehicle structural member 10 has a comparison in cross-sectional size such as a bumper reinforcement or a chassis frame in addition to the side sill. It can be applied to a vehicle member close to a straight line (meaning that the closed cross-sections s1 to s4 are large enough not to be crushed during extrusion molding).

また、上記実施例においては、車両用構造部材10をアルミニウムまたはアルミニウム合金の押出し成形部材にて構成したが、該車両用構造部材10はマグネシウムまたはマグネシウム合金の押出し成形部材にて構成してもよい。   Moreover, in the said Example, although the structural member 10 for vehicles was comprised with the extrusion molding member of aluminum or aluminum alloy, this structural member 10 for vehicles may be comprised with the extrusion molding member of magnesium or a magnesium alloy. .

以上説明したように、本発明は、車体の一部を構成し、車両の衝突時に荷重が作用して曲げ変形が生ずる車両用構造部材について有用である。   As described above, the present invention is useful for a vehicle structural member that constitutes a part of a vehicle body and that undergoes bending deformation when a load acts upon a vehicle collision.

1…サイドシル
2…サイドシルアウタ
3…サイドシルインナ
4…閉断面部
10,30,40,50…車両用構造部材
11…第1面部
12…第2面部
13…第3面部
14,15…第1連結部
16,17…第2連結部
J1〜J4…連結部
DESCRIPTION OF SYMBOLS 1 ... Side sill 2 ... Side sill outer 3 ... Side sill inner 4 ... Close cross-section part 10, 30, 40, 50 ... Structural member 11 for vehicles 11 ... 1st surface part 12 ... 2nd surface part 13 ... 3rd surface part 14, 15 ... 1st connection Part 16, 17 ... 2nd connection part J1-J4 ... connection part

Claims (1)

車体の一部を構成し、車両の衝突時に荷重が作用して曲げ変形が生ずる車両用構造部材であって、
上記荷重が作用した時に圧縮方向の力が作用する第1面部と、
引張方向の力が作用する第2面部と、
上記第1、第2面部の間に配設され、該第1、第2面部の両端部より内方で両者を略直線的に連結する一対の第3面部とを有し、
上記第1面部と上記第3面部との連結部近傍において、両者を略直線的に連結する第1連結部が設けられ、
上記第2面部と上記第3面部との連結部近傍において、両者を略直線的に連結する第2連結部が設けられ、
上記第1連結部は、断面視で、上記第1面部と上記第3面部との上記連結部近傍における上記第1面部の中央側に配設され、
上記第2連結部は、上記第2面部と上記第3面部との上記連結部近傍における上記第2面部の中央側に配設され、
上記車両用構造部材が、サイドシルの一部を構成し、
該サイドシルが、サイドシルアウタとサイドシルインナとから形成される閉断面部を有し、
該閉断面部内に上記車両用構造部材が配設され、
上記第1面部が車幅方向外側に、上記第2面部が車幅方向内側にそれぞれ位置するよう配設され、
両側の上記第3面部がそれぞれ上側および下側に位置するよう配設され、
上記サイドシルアウタは、上記第1面部と平行に形成される第1平面部と、上記第1平面部に対して車幅方向外側にオフセットして形成される第2平面部とを備え、
上記第1平面部および上記第2平面部はそれぞれ、上記上側の第3面部および上記下側の第3面部に対して車方向でそれぞれ重複して形成されたことを特徴とする
車両用構造部材。
A vehicle structural member that constitutes a part of a vehicle body and that undergoes bending deformation due to a load acting upon a vehicle collision,
A first surface portion on which a force in the compression direction acts when the load acts;
A second surface portion on which a force in the tensile direction acts;
A pair of third surface portions disposed between the first and second surface portions, and connecting the both substantially linearly inward from both ends of the first and second surface portions;
In the vicinity of the connecting portion between the first surface portion and the third surface portion, there is provided a first connecting portion that connects the two substantially linearly,
In the vicinity of the connecting portion between the second surface portion and the third surface portion, there is provided a second connecting portion for connecting both substantially linearly,
The first connecting portion is disposed on the center side of the first surface portion in the vicinity of the connecting portion between the first surface portion and the third surface portion in a cross-sectional view,
The second connecting portion is disposed on the center side of the second surface portion in the vicinity of the connecting portion between the second surface portion and the third surface portion,
The vehicle structural member constitutes a part of the side sill,
The side sill has a closed cross-section formed from a side sill outer and a side sill inner;
The vehicle structural member is disposed in the closed cross section,
The first surface portion is disposed outside the vehicle width direction, and the second surface portion is disposed inside the vehicle width direction, respectively.
The third surface portions on both sides are disposed on the upper side and the lower side, respectively.
The side sill outer includes a first plane portion formed in parallel with the first surface portion, and a second plane portion formed by being offset outward in the vehicle width direction with respect to the first plane portion,
Each said first planar portion and said second planar portion, and characterized by being formed by overlapping respectively the vehicle width direction relative to the third surface portion of the third surface portion and the lower side of the upper A vehicle structural member.
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