JP2014223894A - Structure of steering support member - Google Patents

Structure of steering support member Download PDF

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Publication number
JP2014223894A
JP2014223894A JP2013105121A JP2013105121A JP2014223894A JP 2014223894 A JP2014223894 A JP 2014223894A JP 2013105121 A JP2013105121 A JP 2013105121A JP 2013105121 A JP2013105121 A JP 2013105121A JP 2014223894 A JP2014223894 A JP 2014223894A
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Prior art keywords
vehicle body
support member
steering support
opening
width
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JP2013105121A
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JP6146661B2 (en
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亮 渥美
Akira Atsumi
亮 渥美
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Suzuki Motor Corp
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Suzuki Motor Corp
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Priority to JP2013105121A priority Critical patent/JP6146661B2/en
Priority to DE102014106719.3A priority patent/DE102014106719B4/en
Priority to IN1288DE2014 priority patent/IN2014DE01288A/en
Priority to CN201410206746.8A priority patent/CN104163193B/en
Publication of JP2014223894A publication Critical patent/JP2014223894A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions
    • B62D25/14—Dashboards as superstructure sub-units
    • B62D25/145—Dashboards as superstructure sub-units having a crossbeam incorporated therein

Abstract

PROBLEM TO BE SOLVED: To suppress the movement of a pillar part into a vehicle body when receiving a collision load from a vehicle body sideway.SOLUTION: Side parts 11 which are continuously connected to an attachment part 2 to be attached to a vehicle body, and extend in a vehicle body width direction, and inclined parts 12 which are continuously connected to the side parts 11 and a base part 10 are arranged at edges 1U, 1L of an opening part 1A of a steering support member 1. The inclined parts 12 are inclined with respect to an axial core of the steering support member 1 so that a width of the opening part 1A at the side parts 11 and a width of the opening part 1A at the base part 10 differ from each other. The inclined parts 12 are formed so that the rigidity of the inclined parts becomes lower than those of the side parts 11 and the base part 10.

Description

本発明は、自動車のインストルメントパネルの内部に車体幅方向にわたって架け渡され、ステアリングコラム等を支持するステアリングサポートメンバーの構造に関する。   The present invention relates to a structure of a steering support member that spans a vehicle body width direction inside an instrument panel of an automobile and supports a steering column and the like.

従来から、自動車のインストルメントパネルの内部には、ステアリングコラム等を支持する剛性部材のステアリングサポートメンバーが車体幅方向にわたって架け渡されている。このステアリングサポートメンバーは、車体幅方向の両端が車体の左右ダッシュサイドパネル（ピラー部）に取り付けられており、運転席側には、ステアリングブラケットを介してステアリングコラムが支持されているとともに、インストルメントパネルが搭載され、かつインストメントパネルに付属するメーター類やオーディオ等の重量のある部品が懸架されている。   2. Description of the Related Art Conventionally, a steering support member, which is a rigid member that supports a steering column or the like, is spanned across the width of a vehicle body inside an instrument panel of an automobile. This steering support member has both ends in the vehicle body width direction attached to the left and right dash side panels (pillars) of the vehicle body, and a steering column is supported on the driver's seat side via a steering bracket. Panels are mounted, and heavy components such as meters and audio attached to the instrument panel are suspended.

近年、マグネシウムやアルミニウムなどの軽合金や繊維強化樹脂複合材料を車体の骨格部品として適用することが望まれている。これらの材料は、従来の鉄製部品と比べ、軽量でありながら高強度、高剛性を発揮できるからである。しかしながら、比強度、比剛性が高いことから、衝突時などに車体に荷重がかかったときに突っ張ってしまう場合がある。従って、車体に衝突エネルギーを受けた場合に当該エネルギーを吸収する機構を用意する必要がある。   In recent years, it has been desired to apply a light alloy such as magnesium or aluminum or a fiber-reinforced resin composite material as a skeleton component of a vehicle body. This is because these materials can exhibit high strength and high rigidity while being lightweight compared to conventional iron parts. However, since the specific strength and specific rigidity are high, there is a case where the vehicle is stretched when a load is applied to the vehicle body at the time of a collision or the like. Therefore, it is necessary to prepare a mechanism for absorbing the energy when the vehicle body receives collision energy.

特許文献１には、車体の側方から衝突エネルギーを受けた場合に衝突エネルギーを吸収する構造として、クロスカービーム（ステアリングサポートメンバー）の左右両端部において、左右ピラー部との間にエネルギー吸収体を介在させる構造が開示されている。そして、エネルギー吸収体として周囲がジャバラ形状を呈したもの、先細りの先端がクロスカービームの端部に連結されたもの、クロスカービームの端部に設けられたピンと嵌合する溝が先端に形成されたものが挙げられている。   In Patent Document 1, as a structure that absorbs collision energy when receiving collision energy from the side of the vehicle body, an energy absorber is provided between the left and right pillars at the left and right ends of the cross car beam (steering support member). A structure in which is interposed is disclosed. And the energy absorber has a bellows shape around it, the tapered tip is connected to the end of the cross car beam, and the groove that fits the pin provided at the end of the cross car beam is formed at the tip Is listed.

特開２００６−２７４７３号公報JP 2006-27473 A

上記の特許文献１に記載された構造では、衝撃エネルギーを受けた場合、エネルギー吸収体が車体幅方向において縮むように変形することにより、あるいはエネルギー吸収体が車体の内側に変位することにより、衝撃エネルギーを吸収している。いずれの構成でもエネルギー吸収体自体が完全に潰れるまでピラー部が車体の内側に入り込み続ける場合があり、ピラー部が乗員に接近してしまうという問題があった。   In the structure described in Patent Document 1 described above, when impact energy is received, the energy absorber is deformed so as to contract in the vehicle body width direction, or the energy absorber is displaced inward of the vehicle body. Is absorbed. In any configuration, there is a case where the pillar portion continues to enter the inside of the vehicle body until the energy absorber itself is completely crushed, and there is a problem that the pillar portion approaches the passenger.

本発明はこのような実状に鑑みてなされたものであり、その目的は、車体側方から衝撃荷重を受けた場合、車体構造のピラー部の乗員側への侵入を抑制することである。   The present invention has been made in view of such a situation, and an object thereof is to suppress the intrusion of the pillar portion of the vehicle body structure into the occupant side when receiving an impact load from the side of the vehicle body.

上記従来技術の有する課題を解決するために、本発明は、車体幅方向にわたって架け渡され、左右の側端部で車体に取り付けられるステアリングサポートメンバーであって、車体前方及び後方の少なくとも一方に車体幅方向に延びる開口部とを有するステアリングサポートメンバーの構造において、前記開口部の縁部において、前記車体に固定される取付部に連接し車体幅方向に沿って前記車体の内側に延びるサイド部と、前記ステアリングサポートメンバーの基本部と前記サイド部に連接する傾斜部とを備え、前記傾斜部は、前記サイド部における前記開口部の幅と前記基本部における前記開口部の幅が異なるよう前記ステアリングサポートメンバーの軸心に対し傾斜し、かつ前記サイド部の強度及び前記基本部の強度よりも低い強度で形成されている。   In order to solve the above-described problems of the prior art, the present invention provides a steering support member that is spanned across the vehicle body width direction and is attached to the vehicle body at the left and right side end portions, In the structure of the steering support member having an opening extending in the width direction, a side portion connected to a mounting portion fixed to the vehicle body at the edge of the opening and extending inward of the vehicle body along the vehicle width direction. The steering support member includes a basic portion and an inclined portion connected to the side portion, and the inclined portion is configured such that a width of the opening portion in the side portion is different from a width of the opening portion in the basic portion. Inclined with respect to the axis of the support member and shaped with a strength lower than the strength of the side portion and the basic portion It is.

前記ステアリングサポートメンバーの内周面において、車体幅方向に延びる横リブと、前記横リブの一方の端部と連結され、前記ステアリングサポートメンバーの上方向に傾斜する第１の傾斜リブと、前記横リブの前記一方の端部と連結され、前記ステアリングサポートメンバーの下方向に向かって傾斜する第２の傾斜リブとが形成され、前記横リブが形成された部分に対応する前記開口部の幅は、前記第１及び第２の傾斜リブが形成された部分に対応する前記開口部の幅よりも広い。   On the inner peripheral surface of the steering support member, a lateral rib that extends in the vehicle body width direction, a first inclined rib that is connected to one end of the lateral rib and that tilts upward in the steering support member; A second inclined rib that is connected to the one end of the rib and is inclined downward with respect to the steering support member is formed, and the width of the opening corresponding to the portion where the lateral rib is formed is , Wider than the width of the opening corresponding to the portion where the first and second inclined ribs are formed.

前記内周面において、前記傾斜部と前記基本部との境界部に相当する位置に、前記内周面から前記開口部に向けて突出する突出部が設けられている。   In the inner peripheral surface, a protruding portion that protrudes from the inner peripheral surface toward the opening is provided at a position corresponding to a boundary portion between the inclined portion and the basic portion.

前記サイド部と前記傾斜部の境界部および前記傾斜部と前記基本部の境界部の少なくとも一方に段部が形成されている。   A step portion is formed at least one of a boundary portion between the side portion and the inclined portion and a boundary portion between the inclined portion and the basic portion.

前記取付部において、前記車体への固定箇所が前記サイド部の車体前後方向の幅内に設けられている。   In the mounting portion, the fixing portion to the vehicle body is provided within the width of the side portion in the longitudinal direction of the vehicle body.

上述のように、本発明に係るステアリングサポートメンバーの構造は、車体前方及び後方の少なくとも一方に車体幅方向に延びる開口部とを有するステアリングサポートメンバーの構造において、開口部の縁部において、車体に固定される取付部に連接し車体幅方向に沿って前記車体の内側に延びるサイド部と、ステアリングサポートメンバーの基本部とサイド部に連接する傾斜部とを備え、傾斜部は、サイド部における開口部の幅と基本部における開口部の幅が異なるようステアリングサポートメンバーの軸心に対し傾斜し、かつサイド部の強度及び基本部の強度よりも低い強度で形成されている。従って、車体側部から衝突荷重を受けた場合、衝突荷重が傾斜部を介してステアリングサポートメンバーの開口部の変形に変換され、ピラー部の乗員側への変位量を傾斜部の変形量と開口部の変形量のみに抑制することができる。   As described above, the structure of the steering support member according to the present invention is a structure of a steering support member having an opening extending in the vehicle width direction at least one of the front and rear of the vehicle body. A side portion extending inward of the vehicle body along the vehicle body width direction and connected to a fixed mounting portion; and a basic portion of the steering support member and an inclined portion connected to the side portion, the inclined portion being an opening in the side portion The width of the portion and the width of the opening in the basic portion are inclined with respect to the axis of the steering support member, and the strength is lower than the strength of the side portion and the strength of the basic portion. Therefore, when a collision load is received from the side of the vehicle body, the collision load is converted into deformation of the opening of the steering support member via the inclined portion, and the displacement amount of the pillar portion toward the passenger is changed to the deformation amount and opening of the inclined portion. It can suppress only to the deformation amount of a part.

また、ステアリングサポートメンバーの内周面において、車体幅方向に延びる横リブと、横リブの一方の端部と連結され、ステアリングサポートメンバーの上方向に傾斜する第１の傾斜リブと、横リブの前記一方の端部と連結され、ステアリングサポートメンバーの下方向に向かって傾斜する第２の傾斜リブとが形成され、横リブが形成された部分に対応する開口部の幅は、第１及び第２の傾斜リブが形成された部分に対応する開口部の幅よりも広くなっている。従って、車体側部から衝撃を受けた場合のステアリングサポートメンバーの開口部の変形を、ステアリングサポートメンバーの内部から促進することができる。   Further, on the inner peripheral surface of the steering support member, a lateral rib extending in the vehicle body width direction, a first inclined rib that is connected to one end of the lateral rib and is inclined upward, and the lateral rib A second inclined rib that is connected to the one end portion and is inclined downward with respect to the steering support member is formed, and the width of the opening corresponding to the portion where the lateral rib is formed has the first and first widths. The width of the opening corresponding to the portion where the two inclined ribs are formed is wider. Therefore, the deformation of the opening of the steering support member when receiving an impact from the side of the vehicle body can be promoted from the inside of the steering support member.

また、ステアリングサポートメンバーの内周面において、傾斜部と基本部との境界部に相当する位置に、内周面から開口部に向けて突出する突出部が設けられている。従って、この突出部と境界部とにより、車体上下方向に所定の厚みを有する箇所が形成され、車体の側部から衝撃を受けた場合、サイド部と傾斜部の変形を補助するとともに、基本部の破壊が突出部よりも車体内部へ進行することを抑制できる。   Further, a protruding portion that protrudes from the inner peripheral surface toward the opening portion is provided at a position corresponding to a boundary portion between the inclined portion and the basic portion on the inner peripheral surface of the steering support member. Accordingly, the projecting portion and the boundary portion form a portion having a predetermined thickness in the vertical direction of the vehicle body. When an impact is received from the side portion of the vehicle body, the side portion and the inclined portion are deformed, and the basic portion Can be prevented from proceeding to the inside of the vehicle body from the protruding portion.

また、サイド部と傾斜部の境界部および傾斜部と基本部の境界部の少なくとも一方に段部が形成されているため、車体側部から荷重を受けた場合、この境界部に荷重の応力を集中させることができる。従って、車体側部から衝撃を受けた場合、ステアリングサポートメンバーの変形の発生位置を明確にするとともに、変形を促進することができる。   In addition, since a step is formed on at least one of the boundary part between the side part and the inclined part and the boundary part between the inclined part and the basic part, when a load is received from the side of the vehicle body, the stress of the load is applied to the boundary part Can concentrate. Therefore, when an impact is received from the side of the vehicle body, the position where the steering support member is deformed can be clarified and the deformation can be promoted.

また、取付部において、車体への固定箇所がサイド部の車体前後方向の幅内に設けられている。従って、車体の側方から受けた荷重は車体前後方向へは伝播されず直接サイド部に伝播され、サイド部に集中される。その結果、車体側部から加えられた衝突荷重をステアリングサポートメンバーの開口部の変形へ変換することによる荷重の吸収がより効果的に行われる。   In addition, in the attachment portion, the fixing portion to the vehicle body is provided within the width of the side portion in the longitudinal direction of the vehicle body. Therefore, the load received from the side of the vehicle body is not propagated in the longitudinal direction of the vehicle body but directly to the side portion and concentrated on the side portion. As a result, the load is absorbed more effectively by converting the collision load applied from the side of the vehicle body into the deformation of the opening of the steering support member.

本発明の実施形態に係るステアリングサポートメンバーの側端部近傍を示す図である。It is a figure which shows the side edge part vicinity of the steering support member which concerns on embodiment of this invention. 図１の線Ｘ−Ｘ矢視断面図である。FIG. 2 is a cross-sectional view taken along line XX in FIG. 1. 本発明の実施形態に係るステアリングサポートメンバーの側端部近傍を示す斜視図である。It is a perspective view which shows the side edge part vicinity of the steering support member which concerns on embodiment of this invention. 図１の線Ｙ−Ｙ矢視断面図である。FIG. 2 is a cross-sectional view taken along line YY in FIG. 1. ステアリングサポートメンバーの変形例を示す図である。It is a figure which shows the modification of a steering support member. ステアリングサポートメンバーの車体への取付部近傍を示す斜視図である。It is a perspective view which shows the attachment part vicinity to the vehicle body of a steering support member. ステアリングサポートメンバーの変形例を模式的に示す図である。It is a figure which shows the modification of a steering support member typically.

以下、本発明を図示の実施の形態に基づいて詳細に説明する。
図１は本発明の実施形態に係るステアリングサポートメンバーの右側端部近傍を示す図であり、図２は図１の線Ｘ−Ｘ矢視断面図であり、図３はステアリングサポートメンバーの右側端部近傍の斜視図である。
ステアリングサポートメンバー１は、自動車の車室内の前方側上部において車体幅方向へ延在する剛性部材である。ステアリングサポートメンバー１は、各種の艤装品を設置する大型樹脂成形部品のインストルメントパネル（図示せず）の内部に配置されており、インストルメントパネルやステアリングコラム（図示せず）を支持している。ステアリングサポートメンバー１は、右側取付部２を介して車体の右ピラー部（図示せず）に取り付けられる。本実施形態において、ステアリングサポートメンバー１と右側取付部２は、軽合金又は繊維強化樹脂複合材料を射出成型することにより一体的に成形される。ステアリングサポートメンバー１は車体幅方向に延びる基本部１０を備え、基本部１０は、車体の後方を向く側において車体幅方向に延びる開口部１Ａを有する。 Hereinafter, the present invention will be described in detail based on illustrated embodiments.
1 is a view showing a vicinity of a right end portion of a steering support member according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line XX in FIG. 1, and FIG. FIG.
The steering support member 1 is a rigid member that extends in the vehicle body width direction at the upper front side in the interior of the automobile. The steering support member 1 is disposed inside an instrument panel (not shown) of a large resin molded part on which various fittings are installed, and supports the instrument panel and the steering column (not shown). . The steering support member 1 is attached to the right pillar portion (not shown) of the vehicle body via the right attachment portion 2. In the present embodiment, the steering support member 1 and the right mounting portion 2 are integrally formed by injection molding a light alloy or a fiber reinforced resin composite material. The steering support member 1 includes a basic portion 10 extending in the vehicle body width direction, and the basic portion 10 has an opening 1A extending in the vehicle body width direction on the side facing the rear of the vehicle body.

ステアリングサポートメンバー１の開口部１Ａの縁部１Ｕ、１Ｌにおいて、サイド部１１は取付部２と連接し、車体幅方向に延びており、傾斜部１２はサイド部１１及び基本部１０に連接している。傾斜部１２は、サイド部１１における開口部１Ａの車体上下方向の幅（縁部１Ｕ、１Ｌの上下方向の距離）が基本部１０における開口部１Ａの車体上下方向の幅より長くなるよう、ステアリングサポートメンバー１の軸心に対し傾斜している。   In the edge portions 1U and 1L of the opening portion 1A of the steering support member 1, the side portion 11 is connected to the mounting portion 2 and extends in the vehicle body width direction, and the inclined portion 12 is connected to the side portion 11 and the basic portion 10. Yes. The inclined portion 12 is steered so that the width of the opening 1A in the side portion 11 in the vertical direction of the vehicle body (the distance in the vertical direction of the edges 1U and 1L) is longer than the width of the opening portion 1A in the basic portion 10 in the vertical direction of the vehicle body. Inclined with respect to the axis of the support member 1.

さらに、傾斜部１２の強度は、連接しているサイド部１１の強度及び基本部１０の強度よりも低く形成されている。傾斜部１２の強度は、傾斜部１２の所定の箇所に少なくとも１つ切欠き部を設けたり、あるいは板厚をサイド部１１、基本部１０よりも薄くすることにより低くすることができる。また、開口部１Ａの縁部１Ｕ、１Ｌに車体幅方向にフランジ部を延設し、傾斜部１２のフランジ部の長さをサイド部１１、基本部１０のフランジ部の長さより短くすることにより傾斜部１２の強度が低くなるよう構成することもできる。   Further, the strength of the inclined portion 12 is formed lower than the strength of the side portion 11 and the strength of the basic portion 10 that are connected. The strength of the inclined portion 12 can be lowered by providing at least one notch portion at a predetermined location of the inclined portion 12 or by making the plate thickness thinner than the side portion 11 and the basic portion 10. Further, by extending a flange portion in the width direction of the vehicle body at the edge portions 1U and 1L of the opening portion 1A, the length of the flange portion of the inclined portion 12 is made shorter than the length of the flange portion of the side portion 11 and the basic portion 10. It can also comprise so that the intensity | strength of the inclination part 12 may become low.

ステアリングサポートメンバー１の内周面の車体の前方向に位置する底面１０Ｂにおいて、横リブ１５、１６、傾斜リブセット１７、１８が底面１０Ｂと一体的に形成されている。横リブ１５、１６は、右側取付部２との境界部分である基本部１０の右側端部からステアリングサポートメンバー１の軸心に沿って車体幅方向に延びるよう形成されている。また、横リブ１５、１６は、ステアリングサポートメンバー１の軸心を挟んで車体の上下方向に並んで配置され、車体幅方向の寸法がサイド部１１と略同一の寸法を有する。   On the bottom surface 10B located in the front direction of the vehicle body on the inner peripheral surface of the steering support member 1, lateral ribs 15, 16 and inclined rib sets 17, 18 are formed integrally with the bottom surface 10B. The lateral ribs 15 and 16 are formed so as to extend in the vehicle body width direction along the axial center of the steering support member 1 from the right end portion of the basic portion 10 which is a boundary portion with the right attachment portion 2. The lateral ribs 15 and 16 are arranged side by side in the vertical direction of the vehicle body with the axis of the steering support member 1 interposed therebetween, and the vehicle body width direction dimension is substantially the same as that of the side portion 11.

傾斜リブセット１７は一対の傾斜リブ１７Ａ（第１の傾斜リブ）及び傾斜リブ１７Ｂ（第２の傾斜リブ）を有する。傾斜リブ１７Ａは車体の外側から内側に向けて、車体幅方向に沿ってステアリングサポートメンバー１の軸心から開口部１Ａの上側の縁部１Ｕに近づくよう上方に傾斜し、傾斜リブ１７Ｂは車体の外側から内側に向けて、車体幅方向に沿ってステアリングサポートメンバー１の軸心から開口部１Ａの下側の縁部１Ｌに近づくよう下方に傾斜している。そして、傾斜リブ１７Ａ、１７Ｂは、それぞれ横リブ１５の車体内側の端部に連結されており、横リブ１５から傾斜部１２、基本部１０に向けて枝分かれするよう形成されている。同様に、傾斜リブセット１８は、車体の外側から内側に向けて車体幅方向に沿って、ステアリングサポートメンバー１の軸心からそれぞれ上方、下方に傾斜する一対の傾斜リブ１８Ａ（第１の傾斜リブ）、１８Ｂ（第２の傾斜リブ）を有する。そして、傾斜リブ１８Ａ、１８Ｂは、それぞれ横リブ１６の車体内側の端部に連結されており、横リブ１６から傾斜部１２、基本部１０に向けて枝分かれするよう形成されている。   The inclined rib set 17 has a pair of inclined ribs 17A (first inclined ribs) and inclined ribs 17B (second inclined ribs). The inclined rib 17A is inclined upward from the outside of the vehicle body to the inside so as to approach the upper edge 1U of the opening 1A from the axis of the steering support member 1 along the vehicle body width direction. Inclined downward from the outside toward the inside so as to approach the lower edge 1L of the opening 1A from the axis of the steering support member 1 along the vehicle body width direction. The inclined ribs 17 </ b> A and 17 </ b> B are connected to the end portions of the lateral ribs 15 inside the vehicle body, and are formed to branch from the lateral ribs 15 toward the inclined portion 12 and the basic portion 10. Similarly, the inclined rib set 18 includes a pair of inclined ribs 18A (first inclined ribs) that are inclined upward and downward from the axis of the steering support member 1 along the vehicle body width direction from the outside to the inside of the vehicle body. ), 18B (second inclined rib). The inclined ribs 18 </ b> A and 18 </ b> B are connected to the end portions of the lateral ribs 16 inside the vehicle body, and are formed to branch from the lateral ribs 16 toward the inclined portion 12 and the basic portion 10.

上述のように、横リブ１５、１６が形成された部分に対応するサイド部１１の開口部１Ａの幅は、傾斜リブ１７Ａ、１７Ｂ、１８Ａ、１８Ｂが形成された部分に対応する傾斜部１２の開口部１Ａの幅よりも広くなっている。   As described above, the width of the opening portion 1A of the side portion 11 corresponding to the portion where the lateral ribs 15 and 16 are formed has the width of the inclined portion 12 corresponding to the portion where the inclined ribs 17A, 17B, 18A and 18B are formed. It is wider than the width of the opening 1A.

ステアリングサポートメンバー１の内周面の底面１０Ｂには、傾斜部１２と基本部１０の境界部において、開口部１Ａへ向かって突出するピン２０、２１、２２が形成されている。ピン２０、２１、２２は全体として押出ピン形状を有する。   On the bottom surface 10B of the inner peripheral surface of the steering support member 1, pins 20, 21, and 22 projecting toward the opening 1A at the boundary between the inclined portion 12 and the basic portion 10 are formed. The pins 20, 21, and 22 have an extruded pin shape as a whole.

図４は図１の線Ｙ−Ｙ矢視断面図である。ピン２０はステアリングサポートメンバー１の内周面の上面１０Ｕに一体的に形成されている。図４に示されるように、ピン２０は、ステアリングサポートメンバー１の内周面の底面１０Ｂから基本部１０における開口部１Ａの縁部１Ｕまで延設されている。同様に、ピン２２はステアリングサポートメンバー１の内周面の下面１０Ｌに一体的に形成されている。ピン２２は、ステアリングサポートメンバー１の内周面の底面１０Ｂから基本部１０における開口部１Ａの縁部１Ｌまで延設されている。ピン２１は、ステアリングサポートメンバー１の内周面の底面１０Ｂにおいて車体上下方向の略中央から開口部１Ａへ向かう方向へ突設されており、ピン２０及び２１の長さの略半分の長さを有する。   4 is a cross-sectional view taken along line YY in FIG. The pin 20 is integrally formed on the upper surface 10U of the inner peripheral surface of the steering support member 1. As shown in FIG. 4, the pin 20 extends from the bottom surface 10 </ b> B of the inner peripheral surface of the steering support member 1 to the edge 1 </ b> U of the opening 1 </ b> A in the basic portion 10. Similarly, the pin 22 is formed integrally with the lower surface 10 </ b> L of the inner peripheral surface of the steering support member 1. The pin 22 extends from the bottom surface 10 </ b> B of the inner peripheral surface of the steering support member 1 to the edge 1 </ b> L of the opening 1 </ b> A in the basic portion 10. The pin 21 protrudes from the substantially center in the vertical direction of the vehicle body toward the opening 1A on the bottom surface 10B of the inner peripheral surface of the steering support member 1, and is approximately half the length of the pins 20 and 21. Have.

上述の横リブ１５、１６の車体前後方向の幅は、ピン２０、２２の長さの略半分である。同様に、上述の傾斜リブ１７Ａ、１７Ｂ、１８Ａ、１８Ｂの車体前後方向の幅もピン２０、２２の長さの略半分である。図１に示すように、ピン２０は、傾斜リブセット１７の傾斜リブ１７Ａと一体的に形成されている。ピン２１は、傾斜リブセット１７の傾斜リブ１７Ｂ及び傾斜リブセット１８の傾斜リブ１８Ａと一体的に形成されている。ピン２２は、傾斜リブセット１８の傾斜リブ１８Ｂと一体的に形成されている。   The width of the transverse ribs 15 and 16 in the longitudinal direction of the vehicle body is substantially half of the length of the pins 20 and 22. Similarly, the width of the inclined ribs 17A, 17B, 18A, 18B in the longitudinal direction of the vehicle body is substantially half of the length of the pins 20, 22. As shown in FIG. 1, the pin 20 is formed integrally with the inclined rib 17 </ b> A of the inclined rib set 17. The pin 21 is formed integrally with the inclined rib 17 </ b> B of the inclined rib set 17 and the inclined rib 18 </ b> A of the inclined rib set 18. The pin 22 is formed integrally with the inclined rib 18 </ b> B of the inclined rib set 18.

尚、サイド部１１と傾斜部１２の境界部において、図５に示すような段部３０が形成されていてもよい。すなわち、サイド部１１と傾斜部１２の境界部の断面が、サイド部１１と連続する傾斜部１２の部分１２Ａとサイド部１１とが交差する形状を有していてもよい。また、傾斜部１２と基本部１０の境界部において、段部が形成されていてもよい。すなわち、傾斜部１２と基本部１０の境界部の断面が、基本部１０と連続する傾斜部１２の部分と基本部１０とが交差する形状を有していてもよい。このような段部は、サイド部１１と傾斜部１２の境界部、及び傾斜部１２と基本部１０の境界部の双方に形成してもよい。   In addition, the step part 30 as shown in FIG. 5 may be formed in the boundary part of the side part 11 and the inclination part 12. As shown in FIG. That is, the cross section of the boundary portion between the side portion 11 and the inclined portion 12 may have a shape in which the portion 12A of the inclined portion 12 continuous with the side portion 11 and the side portion 11 intersect. A stepped portion may be formed at the boundary between the inclined portion 12 and the basic portion 10. That is, the cross section of the boundary portion between the inclined portion 12 and the basic portion 10 may have a shape in which the portion of the inclined portion 12 that is continuous with the basic portion 10 intersects the basic portion 10. Such stepped portions may be formed at both the boundary portion between the side portion 11 and the inclined portion 12 and the boundary portion between the inclined portion 12 and the basic portion 10.

ステアリングサポートメンバー１は、左右取付部を介して車体に取り付けられる。図６は、右側取付部２の近傍を車体から示す斜視図である。右側取付部２には取付穴２Ａ、２Ｂ、及び２Ｃが設けられている。ステアリングサポートメンバー１は取付穴２Ａ、２Ｂ、
２Ｃにそれぞれ嵌合する所定の固定部材により車体に固定される。取付穴２Ａ、２Ｂ、２Ｃはサイド部１１の車体前後方向の幅内に位置している。すなわち、右側取付部２の車体への固定箇所はサイド部１１の車体前後方向の幅内に位置している。 The steering support member 1 is attached to the vehicle body via left and right attachment portions. FIG. 6 is a perspective view showing the vicinity of the right attachment portion 2 from the vehicle body. The right attachment portion 2 is provided with attachment holes 2A, 2B, and 2C. Steering support member 1 has mounting holes 2A, 2B,
It is fixed to the vehicle body by predetermined fixing members that are respectively fitted to 2C. The mounting holes 2A, 2B, 2C are located within the width of the side portion 11 in the longitudinal direction of the vehicle body. That is, the location where the right mounting portion 2 is fixed to the vehicle body is located within the width of the side portion 11 in the longitudinal direction of the vehicle body.

以上、図１〜６を用いてステアリングサポートメンバー１の右側端部近傍の構成について説明したが、車体の左側端部近傍においても同様の構成を有する。   As described above, the configuration in the vicinity of the right end portion of the steering support member 1 has been described with reference to FIGS. 1 to 6, but the same configuration is provided in the vicinity of the left end portion of the vehicle body.

このように、本発明に係る実施形態によれば、ステアリングサポートメンバー１の開口部１Ａの縁部１Ｕ、１Ｌにおいて、サイド部１１が取付部２と連接し車体幅方向に延び、傾斜部１２がサイド部１１及び基本部１０に連接して形成されており、傾斜部１２の強度は、連接しているサイド部１１の強度及び基本部１０の強度よりも低く形成されている。従って、車体側部から衝撃を受けると、その荷重は取付部２を経由してサイド部１１に伝播し、サイド部１１から車体幅方向に沿って更に車体の内側へ伝播し、この荷重の伝播がサイド１１と傾斜部１２との境界部分にさしかかると、荷重は行き場をなくして開口部１Ａを広げたり閉じたりする荷重へと変化する。そして、本実施形態によれば、傾斜部１２の強度がサイド部１１及び基本部１０の強度より低いため、開口部１Ａの変形はより一層大きくなる。すなわち、車体側部から受けた衝突荷重が傾斜部１２を介してステアリングサポートメンバー１の開口部１Ａの変形に変換される。従って、取付部２が固定されているピラー部の乗員側への変位量を傾斜部１２の変形量、開口部１Ａの変形量のみに抑制することができる。   As described above, according to the embodiment of the present invention, at the edge portions 1U and 1L of the opening portion 1A of the steering support member 1, the side portion 11 is connected to the mounting portion 2 and extends in the vehicle body width direction, and the inclined portion 12 is The side portion 11 and the base portion 10 are connected to each other, and the inclined portion 12 has a lower strength than the side portion 11 and the base portion 10 connected to each other. Therefore, when an impact is received from the side part of the vehicle body, the load propagates to the side part 11 via the mounting part 2 and further propagates from the side part 11 to the inside of the vehicle body along the vehicle body width direction. However, when it reaches the boundary part between the side 11 and the inclined part 12, the load changes to a load that causes the opening 1A to be expanded or closed without having a place to go. And according to this embodiment, since the intensity | strength of the inclination part 12 is lower than the intensity | strength of the side part 11 and the basic part 10, the deformation | transformation of the opening part 1A becomes still larger. That is, the collision load received from the vehicle body side portion is converted into the deformation of the opening portion 1 </ b> A of the steering support member 1 through the inclined portion 12. Therefore, the amount of displacement of the pillar portion to which the attachment portion 2 is fixed toward the occupant side can be suppressed only to the deformation amount of the inclined portion 12 and the deformation amount of the opening portion 1A.

また、本実施形態によれば、ステアリングサポートメンバー１の内周面の底面１０Ｂには横リブ１５及び１６、横リブ１５から枝分かれしている傾斜リブセット１７、横リブ１６から枝分かれしている傾斜リブセット１８が形成されている。そして、傾斜リブセット１７及び１８がそれぞれ枝分かれしている方向は、開口部１Ａの幅（上下方向の縁部１Ｕ、１Ｌの距離）がサイド部１１よりも小さい傾斜部１２、基本部１０に向かう方向である。従って、車体側部から衝撃を受けた場合の開口部１Ａの変形を、ステアリングサポートメンバー１の内部から促進することができる。   Further, according to the present embodiment, the bottom surface 10B of the inner peripheral surface of the steering support member 1 has the lateral ribs 15 and 16, the inclined rib set 17 branched from the lateral rib 15, and the inclined branch branched from the lateral rib 16. A rib set 18 is formed. The direction in which the inclined rib sets 17 and 18 are branched is directed toward the inclined portion 12 and the basic portion 10 in which the width of the opening 1A (the distance between the edges 1U and 1L in the vertical direction) is smaller than that of the side portion 11. Direction. Therefore, the deformation of the opening 1 </ b> A when receiving an impact from the side of the vehicle body can be promoted from the inside of the steering support member 1.

さらに、本実施形態によれば、ステアリングサポートメンバー１の内周面の傾斜部１２と基本部１０の境界部に相当する位置において、開口部１Ａへ向かって突出する押出ピン形状のピン２０、２２が設けられており、図４に示すように、ピン２０、２２と基本部１０とにより、車体上下方向に所定の厚みを有する箇所が形成されている。従って、車体の側部から衝撃を受けた場合、サイド部１１と傾斜部１２の変形を補助するとともに、基本部１０の破壊がピン２０、２２よりも車体内部へ進行することを抑制できる。   Furthermore, according to this embodiment, the pins 20 and 22 in the form of extrusion pins projecting toward the opening 1A at positions corresponding to the boundary portions between the inclined portion 12 and the basic portion 10 on the inner peripheral surface of the steering support member 1. As shown in FIG. 4, the pins 20 and 22 and the basic portion 10 form a portion having a predetermined thickness in the vehicle body vertical direction. Therefore, when an impact is received from the side portion of the vehicle body, the deformation of the side portion 11 and the inclined portion 12 is assisted, and the destruction of the basic portion 10 can be suppressed from proceeding to the inside of the vehicle body from the pins 20 and 22.

また、サイド部１１と傾斜部１２の境界部において、上述の段部３０を形成すれば、境界部に車体側部から受ける荷重の応力を集中させることができる。従って、車体側部から衝撃を受けた場合、ステアリングサポートメンバー１の変形の発生位置を明確にするとともに変形を促進することができる。また、傾斜部１２と基本部１０の境界部において上述の段差部を形成することによっても同様の効果が得られる。   Moreover, if the above-mentioned step part 30 is formed in the boundary part of the side part 11 and the inclination part 12, the stress of the load received from a vehicle body side part can be concentrated on a boundary part. Therefore, when an impact is received from the side of the vehicle body, the position where the steering support member 1 is deformed can be clarified and the deformation can be promoted. Further, the same effect can be obtained by forming the above-described stepped portion at the boundary portion between the inclined portion 12 and the basic portion 10.

また、本実施形態によれば、右側取付部２は、ステアリングサポートメンバー１のサイド部１１の車体前後方向の幅内に設けられた取付穴２Ａ、２Ｂで車体に固定されている。この構成により、車体の側方から受けた荷重は車体前後方向へは伝播されず、直接右側サイド部２に伝播される。すなわち、車体側部から加えられた衝突荷重がサイド部１１に集中される。従って、上述の右側取付部２の近傍の構成により車体側部から加えられた衝突荷重を開口部１Ａの変形へ変換することによる荷重の吸収がより効果的に行われる。   Further, according to the present embodiment, the right mounting portion 2 is fixed to the vehicle body by the mounting holes 2 </ b> A and 2 </ b> B provided within the width of the side portion 11 of the steering support member 1 in the longitudinal direction of the vehicle body. With this configuration, the load received from the side of the vehicle body is not propagated in the longitudinal direction of the vehicle body but directly to the right side portion 2. That is, the collision load applied from the side of the vehicle body is concentrated on the side portion 11. Therefore, the absorption of the load by converting the collision load applied from the side of the vehicle body into the deformation of the opening 1A by the configuration in the vicinity of the right mounting portion 2 is more effectively performed.

本実施形態では、ステアリングサポートメンバー１と右側取付部２は、射出成型することにより一体的に成形されるがこれに限るものではない。別体のステアリングサポートメンバーと右側取付部を溶接や固定具を用いて連接してもよい。この場合も、傾斜部、各リブを上述の構成とすることにより、同様の効果が得られる。   In the present embodiment, the steering support member 1 and the right mounting portion 2 are integrally formed by injection molding, but the present invention is not limited to this. The separate steering support member and the right mounting portion may be connected using welding or a fixture. Also in this case, the same effect can be obtained by configuring the inclined portion and each rib as described above.

本実施形態では、サイド部１１における開口部１Ａの幅が基本部１０における開口部の幅より長くなるよう傾斜部１２は傾斜しているが、これに限るものではない。図７に示すように、基本部１０’における開口部１Ａ’の幅が、サイド部１１’における開口部１Ａ’の幅より長くなるよう傾斜部１２’が傾斜する構成としてもよい。この変形例の場合も、傾斜部１２’は、上述した傾斜部１２の強度を低くするための構成と同様の構成により、サイド部１１’、基本部１０’よりも強度が低くなるよう形成される。   In the present embodiment, the inclined portion 12 is inclined such that the width of the opening portion 1A in the side portion 11 is longer than the width of the opening portion in the basic portion 10, but this is not restrictive. As shown in FIG. 7, the inclined portion 12 ′ may be inclined so that the width of the opening 1 </ b> A ′ in the basic portion 10 ′ is longer than the width of the opening 1 </ b> A ′ in the side portion 11 ′. Also in this modified example, the inclined portion 12 ′ is formed to have lower strength than the side portion 11 ′ and the basic portion 10 ′ by the same configuration as the configuration for reducing the strength of the inclined portion 12 described above. The

図７に示す変形例の場合、傾斜リブセット１７’が横リブ１５’から枝分かれする方向、及び傾斜リブセット１８’が横リブ１６’から枝分かれする方向が、基本部１０’及び傾斜部１２’よりも開口部１Ａ’の幅の小さいサイド部１１’に向かう方向となるよう、各リブは形成される。従って、上述のように、車体側部から衝撃を受けた場合の開口部１Ａ’の変形をステアリングサポートメンバーの内部から促進することができる。   In the case of the modification shown in FIG. 7, the direction in which the inclined rib set 17 ′ branches from the lateral rib 15 ′ and the direction in which the inclined rib set 18 ′ branches from the lateral rib 16 ′ are the basic portion 10 ′ and the inclined portion 12 ′. Each rib is formed so as to be in a direction toward the side portion 11 ′ having a smaller width of the opening 1A ′. Therefore, as described above, the deformation of the opening 1A 'when receiving an impact from the side of the vehicle body can be promoted from the inside of the steering support member.

尚、横リブ１５（１５’）、１６（１６’）、及び傾斜リブセット１７（１７’）、１１８（１８’）の各リブ幅をより狭めることにより、傾斜リブセット１７（１７’）及び傾斜リブセット１８（１８’）において枝分かれしている部分に、車体側方から受ける荷重を集中させ、衝突エネルギーをより効果的に吸収する構成としてもよい。ここで、各リブ幅とは各リブの肉厚、車体幅方向の幅、車体前後方向の幅のいずれでもよく、これらのうち少なくとも１つを狭める構成としてもよい。   The inclined rib set 17 (17 ′) and the ribs 17 (17 ′) and 118 (18 ′) and the lateral ribs 15 (15 ′) and 16 (16 ′) and the inclined rib sets 17 (17 ′) and 118 (18 ′) are further narrowed. The load received from the side of the vehicle body may be concentrated on the branching portion of the inclined rib set 18 (18 ′) to absorb the collision energy more effectively. Here, each rib width may be any of the thickness of each rib, the width in the vehicle body width direction, and the width in the vehicle body front-rear direction, and at least one of them may be narrowed.

以上、本発明の実施の形態につき述べたが、本発明は既述の実施の形態に限定されるものではなく、本発明の技術的思想に基づいて各種の変形及び変更が可能である。   While the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made based on the technical idea of the present invention.

１ ステアリングサポートメンバー
２ 取付部
１Ａ 開口部
１０ 基本部
１１ サイド部
１２ 傾斜部
１５、１６ 横リブ
１７、１８ 傾斜リブセット
１７Ａ、１８Ａ 第１の傾斜リブ
１８Ｂ、１８Ｂ 第２の傾斜リブ
２０、２１、２２ ピン DESCRIPTION OF SYMBOLS 1 Steering support member 2 Attaching part 1A Opening part 10 Basic part 11 Side part 12 Inclined part 15, 16 Lateral rib 17, 18 Inclined rib set 17A, 18A 1st inclined rib 18B, 18B 2nd inclined rib 20, 21, 22 pins

Claims (5)

車体幅方向にわたって架け渡され、左右の側端部で車体に取り付けられるステアリングサポートメンバーであって、車体前方及び後方の少なくとも一方に車体幅方向に延びる開口部とを有するステアリングサポートメンバーの構造において、
前記開口部の縁部において、前記車体に固定される取付部に連接し車体幅方向に沿って前記車体の内側に延びるサイド部と、前記ステアリングサポートメンバーの基本部と前記サイド部に連接する傾斜部とを備え、
前記傾斜部は、前記サイド部における前記開口部の幅と前記基本部における前記開口部の幅が異なるよう前記ステアリングサポートメンバーの軸心に対し傾斜し、かつ前記サイド部の強度及び前記基本部の強度よりも低い強度で形成されていることを特徴とするステアリングサポートメンバーの構造。 A steering support member that spans the vehicle body width direction and is attached to the vehicle body at the left and right side end portions, and has an opening extending in the vehicle body width direction at least one of the vehicle body front and rear sides.
At the edge of the opening, a side portion that is connected to the mounting portion fixed to the vehicle body and extends inward of the vehicle body along the vehicle body width direction, and an inclination that is connected to the basic portion and the side portion of the steering support member With
The inclined portion is inclined with respect to an axis of the steering support member so that a width of the opening portion in the side portion is different from a width of the opening portion in the basic portion, and the strength of the side portion and the basic portion A structure of a steering support member characterized by being formed with a strength lower than the strength. 前記ステアリングサポートメンバーの内周面において、
車体幅方向に延びる横リブと、
前記横リブの一方の端部と連結され、前記ステアリングサポートメンバーの上方向に傾斜する第１の傾斜リブと、
前記横リブの前記一方の端部と連結され、前記ステアリングサポートメンバーの下方向に向かって傾斜する第２の傾斜リブとが形成され、
前記横リブが形成された部分に対応する前記開口部の幅は、前記第１及び第２の傾斜リブが形成された部分に対応する前記開口部の幅よりも広いことを特徴とする請求項１に記載のステアリングサポートメンバー。 On the inner peripheral surface of the steering support member,
Lateral ribs extending in the vehicle body width direction;
A first inclined rib connected to one end of the lateral rib and inclined upward in the steering support member;
A second inclined rib that is connected to the one end of the lateral rib and is inclined downward with respect to the steering support member;
The width of the opening corresponding to the portion where the lateral rib is formed is wider than the width of the opening corresponding to the portion where the first and second inclined ribs are formed. The steering support member according to 1. 前記内周面において、前記傾斜部と前記基本部との境界部に相当する位置に、前記内周面から前記開口部に向けて突出する突出部が設けられていることを特徴とする請求項２に記載のステアリングサポートメンバーの構造。   The projecting portion projecting from the inner peripheral surface toward the opening is provided at a position corresponding to a boundary portion between the inclined portion and the basic portion on the inner peripheral surface. 2. The structure of the steering support member according to 2. 前記サイド部と前記傾斜部の境界部および前記傾斜部と前記基本部の境界部の少なくとも一方に段部が形成されていることを特徴とする請求項１に記載のステアリングサポートメンバーの構造。   The structure of the steering support member according to claim 1, wherein a step portion is formed in at least one of a boundary portion between the side portion and the inclined portion and a boundary portion between the inclined portion and the basic portion. 前記取付部において、前記車体への固定箇所が前記サイド部の車体前後方向の幅内に設けられていることを特徴とする請求項１に記載のステアリングサポートメンバーの構造。   The structure of the steering support member according to claim 1, wherein the fixing portion is provided within a width of the side portion in the longitudinal direction of the vehicle body in the attachment portion.
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