JP7076768B2 - Cross member structure for automobiles - Google Patents

Cross member structure for automobiles Download PDF

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JP7076768B2
JP7076768B2 JP2017243584A JP2017243584A JP7076768B2 JP 7076768 B2 JP7076768 B2 JP 7076768B2 JP 2017243584 A JP2017243584 A JP 2017243584A JP 2017243584 A JP2017243584 A JP 2017243584A JP 7076768 B2 JP7076768 B2 JP 7076768B2
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mounting portion
cross member
mounting
support
extending
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JP2019108072A (en
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忍 仲本
裕貴 山本
正志 安藤
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Hiruta Kogyo Co Ltd
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Hiruta Kogyo Co Ltd
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Description

本発明は、自動車用クロスメンバ構造に関する。 The present invention relates to a cross member structure for an automobile.

自動車のフレームは、自動車の車長方向に延びるサイドメンバと、自動車の車幅方向に延びるクロスメンバとから構成される。 The frame of an automobile is composed of a side member extending in the length direction of the automobile and a cross member extending in the width direction of the automobile.

例えば、特許文献1には、符号4で示される2本のサイドメンバと、符号5及び符号6で示される2本のクロスメンバとから構成されるフレームが開示されている。このフレームは、車体のいずれの部分に用いられるかが記載されていないが、フロントエンドクロスメンバとの記載から、車体の前部分に配置されるものと思われる。 For example, Patent Document 1 discloses a frame composed of two side members represented by reference numeral 4 and two cross members represented by reference numerals 5 and 6. Although it is not described which part of the car body this frame is used for, it seems that it is arranged in the front part of the car body from the description of the front end cross member.

さらに、特許文献2には、自動車のリアサブフレームの構造が開示されている。このリアサブフレームは、車幅方向に延びる前クロスメンバと後クロスメンバと、車長方向に延びる2本のサイドメンバとから構成される。 Further, Patent Document 2 discloses the structure of the rear subframe of an automobile. This rear subframe is composed of a front cross member and a rear cross member extending in the vehicle width direction, and two side members extending in the vehicle length direction.

特開2004-74819号公報Japanese Unexamined Patent Publication No. 2004-74819 特開2015-155255号公報JP-A-2015-155255

フレームを構成するクロスメンバやサイドメンバ等の部材は車輪の支持部材を支持するために利用されることがある。特許文献1には、特段そのような記載はされていないが、特許文献2では、符号22で示されるクロスメンバの端部に対して符号14で示されるアッパリンクの一端部と符合10で示されるロアリンクの一端部とが接続される。そして、アッパリンクの他端部とロアリンクの他端部とは、車輪の支持部材に連結されている。 Members such as cross members and side members constituting the frame may be used to support the support members of the wheels. Although no such description is made in Patent Document 1, in Patent Document 2, the end of the cross member indicated by reference numeral 22 is indicated by a symbol 10 with one end of the upper link indicated by reference numeral 14. It is connected to one end of the lower link. The other end of the upper link and the other end of the lower link are connected to the support member of the wheel.

特許文献2の構造では、符号20で示されるサイドメンバの上に上述のロアリンク及びアッパリンクの取付部を有するクロスメンバが固定される。この構造では、車輪から入力される荷重によって、サイドメンバとクロスメンバとを接合する部分に大きな負荷がかかる。クロスメンバはサイドメンバの上にのみ接触する構成であるため、特に車輪が上方に変位する荷重に対して、脆弱になりやすい。 In the structure of Patent Document 2, a cross member having the above-mentioned lower link and upper link attachment portions is fixed on the side member indicated by reference numeral 20. In this structure, a large load is applied to the portion where the side member and the cross member are joined by the load input from the wheel. Since the cross member is configured to contact only on the side member, it is vulnerable to a load in which the wheel is displaced upward.

本発明は、車輪の支持部材から入力される荷重を支持部の上部と下部とに分散させて支えることができるクロスメンバ構造を提供することを目的とする。 It is an object of the present invention to provide a cross member structure capable of distributing and supporting a load input from a wheel support member between the upper part and the lower part of the support portion.

車輪の支持部材を支持するクロスメンバ構造であって、クロスメンバ構造は、車輪の支持部材に連結される第1連結部を支持する第1取付部と、車輪の支持部材に連結される第2連結部を支持する第2取付部と、第1取付部と第2取付部とを支持する支持部とを含むクロスメンバ構造であり、第1取付部は支持部の上部に対して固定されており、第2取付部は支持部の下部に対して固定されており、第1取付部と第2取付部とは支持部の横で連続した一体の部材である自動車用クロスメンバ構造(以下、単にクロスメンバ構造と呼ぶ。)によって、上記の課題を解決する。 It is a cross member structure that supports a wheel support member, and the cross member structure has a first mounting portion that supports a first connecting portion that is connected to the wheel support member and a second that is connected to the wheel support member. It has a cross-member structure including a second mounting portion that supports the connecting portion and a support portion that supports the first mounting portion and the second mounting portion, and the first mounting portion is fixed to the upper portion of the support portion. The second mounting portion is fixed to the lower part of the support portion, and the first mounting portion and the second mounting portion are a continuous integrated member beside the support portion, which is a cross member structure for automobiles (hereinafter referred to as “cross member structure”). It is simply called a cross-member structure) to solve the above problem.

上記のクロスメンバ構造において、車輪の支持部材から荷重が入力されると、第1取付部と第2取付部とは支持部の横で連続した一体の部材とされているため、第2連結部及び第1連結部を経て入力された荷重は、第1取付部及び支持部の接続部分と第2取付部及び支持部の接続部分との両方に分散して支えられる。これによって、第1取付部と支持部との接続部分及び第2取付部と支持部との接続部分のうちのいずれか一方にのみ負荷が集中することを防ぐことができる。 In the above cross member structure, when a load is input from the wheel support member, the first mounting portion and the second mounting portion are continuous and integrated members next to the support portion, so that the second connecting portion is formed. And the load input through the first connecting portion is distributed and supported in both the connecting portion of the first mounting portion and the supporting portion and the connecting portion of the second mounting portion and the supporting portion. This makes it possible to prevent the load from being concentrated on only one of the connection portion between the first mounting portion and the support portion and the connection portion between the second mounting portion and the support portion.

上記のクロスメンバ構造において、第2取付部は、車幅方向に延びる部分を備えており、車幅方向に延びる部分が支持部の下部に当接するようにすることが好ましい。これによって、第2取付部が支持部に接触する面積を増大させて、単位面積当たりに作用する荷重を小さくすることが可能になる。また、車幅方向に延びる部分に第2連結部を支持することが可能になる。 In the above cross member structure, the second mounting portion includes a portion extending in the vehicle width direction, and it is preferable that the portion extending in the vehicle width direction abuts on the lower portion of the support portion. This makes it possible to increase the area in which the second mounting portion contacts the support portion and reduce the load acting per unit area. Further, the second connecting portion can be supported on the portion extending in the vehicle width direction.

上記のクロスメンバ構造において、第1取付部は、車幅方向に延びる部分を備えており、車幅方向に延びる部分が支持部の上部に当接するようにすることが好ましい。これによって、第1取付部が支持部に接触する面積を増大させて、単位面積当たりに作用する荷重を小さくすることが可能になる。また、車幅方向に延びる部分に第1連結部を支持することが可能になる。 In the above cross member structure, the first mounting portion includes a portion extending in the vehicle width direction, and it is preferable that the portion extending in the vehicle width direction abuts on the upper portion of the support portion. This makes it possible to increase the area in which the first mounting portion contacts the support portion and reduce the load acting per unit area. Further, the first connecting portion can be supported on the portion extending in the vehicle width direction.

上記のクロスメンバ構造において、第1取付部と第2取付部とは、別々に成形された部材であり、第1取付部と第2取付部とを互いに接合することによって、一体の部材とされたものとすることが好ましい。第1取付部と第2取付部とを別々の部材とすることによって、第1取付部又は第2取付部を複雑な形状としても、板材のプレス成型や曲げ成型によって成形することが可能になる。
In the above cross member structure, the first mounting portion and the second mounting portion are separately molded members, and by joining the first mounting portion and the second mounting portion to each other, they are made into an integral member. It is preferable to use the above. By making the first mounting part and the second mounting part separate members, even if the first mounting part or the second mounting part has a complicated shape, it can be molded by press molding or bending molding of the plate material. Become.

上記のクロスメンバ構造において、第1取付部及び第2取付部の支持部は、車長方向に延びる棒状の部材とすることが好ましい。棒状の部材とすることによって、例えばサイドメンバ、又はクロスメンバなどのフレームの構成部材を支持部として利用することが可能にある。これによって、軽量化を図ると共に省スペース化を図ることができる。 In the above cross member structure, it is preferable that the support portions of the first mounting portion and the second mounting portion are rod-shaped members extending in the vehicle length direction. By using a rod-shaped member, it is possible to use a frame component such as a side member or a cross member as a support portion. As a result, it is possible to reduce the weight and space.

上記のクロスメンバ構造は、車幅方向に延び車体の背面側に位置する第1クロスメンバと、車幅方向に延び車体の正面側に位置する第2クロスメンバと、第2クロスメンバと第1クロスメンバとを接続するように車長方向に延びるサイドクロスメンバとを含み、第1取付部と第2取付部とを支持する支持部は、サイドクロスメンバとすることが好ましい。このクロスメンバ構造は、例えば、1対のサイドメンバの間に固定して使用される。これによって、サイドメンバを補強することが可能になる。このクロスメンバ構造は、第1クロスメンバ、第2クロスメンバ、及びサイドクロスメンバを含んでおり車長方向にある程度の長さがある構造物となるため、重量物や燃料タンクなどの構造物を固定する場所を提供することが可能になる。また、サイドクロスメンバは車長方向に延びる部材であるので、第1取付部と第2取付部とを支持する支持部として好適に利用することが可能である。 The above cross member structure includes a first cross member extending in the vehicle width direction and located on the back side of the vehicle body, a second cross member extending in the vehicle width direction and located on the front side of the vehicle body, and a second cross member and a first cross member. The support portion that supports the first mounting portion and the second mounting portion, including the side cross member extending in the vehicle length direction so as to connect to the cross member, is preferably a side cross member. This cross-member structure is used, for example, fixed between a pair of side members. This makes it possible to reinforce the side members. Since this cross member structure includes the first cross member, the second cross member, and the side cross member and has a certain length in the vehicle length direction, a structure such as a heavy object or a fuel tank can be used. It will be possible to provide a place to fix. Further, since the side cross member is a member extending in the vehicle length direction, it can be suitably used as a support portion for supporting the first mounting portion and the second mounting portion.

本発明によれば、車輪の支持部材から入力される荷重を支持部の上部と下部とに分散させて支えることができるクロスメンバ構造を提供することが可能になる。 According to the present invention, it is possible to provide a cross member structure capable of distributing and supporting a load input from a wheel support member between the upper part and the lower part of the support portion.

一実施形態に係るクロスメンバ構造をサイドクロスメンバを取り付けた状態を示す平面図である。It is a top view which shows the state which attached the side cross member to the cross member structure which concerns on one Embodiment. 図1のクロスメンバ構造のみを示す平面図である。It is a top view which shows only the cross member structure of FIG. 図2のクロスメンバ構造の底面図である。It is a bottom view of the cross member structure of FIG. 図2のクロスメンバ構造の側面図である。It is a side view of the cross member structure of FIG. 図2のクロスメンバ構造の斜視図である。It is a perspective view of the cross member structure of FIG. 図2のAA部分における断面図である。It is sectional drawing in the AA part of FIG. 図2のBB部分における断面図である。It is sectional drawing in the BB part of FIG. 図2のクロスメンバ構造に車輪の支持部材を取り付けた状態を示す背面図である。It is a rear view which shows the state which the support member of a wheel is attached to the cross member structure of FIG. 支持部に固定された第1取付部及び第2取付部を示す斜視図である。It is a perspective view which shows the 1st attachment part and the 2nd attachment part fixed to a support part. 支持部に固定された第1取付部及び第2取付部を示す斜視図である。It is a perspective view which shows the 1st attachment part and the 2nd attachment part fixed to a support part.

以下、図面を参照しながら、本発明の一実施形形態について説明する。以下に挙げる実施形態は一例に過ぎず、本発明はこれに限定されるものではない。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The embodiments listed below are merely examples, and the present invention is not limited thereto.

図1ないし図10に自動車用クロスメンバ構造(以下、単にクロスメンバ構造という。)の一実施形態を示す。このクロスメンバ構造1は、車幅方向に延び車体の背面側に位置する第1クロスメンバ11と、車幅方向に延び車体の正面側に位置する第2クロスメンバ12と、第2クロスメンバ12と第1クロスメンバ11とを接続するように車長方向に延びる形状を有する一対のサイドクロスメンバ13とを有する。 1 to 10 show an embodiment of a cross-member structure for automobiles (hereinafter, simply referred to as a cross-member structure). The cross member structure 1 includes a first cross member 11 extending in the vehicle width direction and located on the back side of the vehicle body, a second cross member 12 extending in the vehicle width direction and located on the front side of the vehicle body, and a second cross member 12. It has a pair of side cross members 13 having a shape extending in the vehicle length direction so as to connect the first cross member 11 and the first cross member 11.

上記のクロスメンバ構造1は、図1に示したように、2本のサイドメンバ9の後部に固定されるものであり、リアクロスメンバと呼ばれる。第2クロスメンバ12は、車幅方向に延びる部材であり、両端部の上面が、それぞれのサイドメンバ9の下面に固定される。サイドクロスメンバ13は、平面視又は底面視において、湾曲部131を備えており、他端部が車両の外側に向けて曲がった形状である。サイドクロスメンバ13の一端部は上記の第2クロスメンバ12の左右の端部と中央部との間に固定されており、サイドクロスメンバ13の他端部は、それぞれサイドメンバ9の下面に固定される。左右のサイドメンバ9の湾曲部131と一端部との間には第1クロスメンバ11の両端部が固定される。 As shown in FIG. 1, the above-mentioned cross member structure 1 is fixed to the rear portion of the two side members 9, and is called a rear cross member. The second cross member 12 is a member extending in the vehicle width direction, and the upper surfaces of both ends thereof are fixed to the lower surfaces of the respective side members 9. The side cross member 13 is provided with a curved portion 131 in a plan view or a bottom view, and the other end portion is curved toward the outside of the vehicle. One end of the side cross member 13 is fixed between the left and right ends and the center of the second cross member 12, and the other end of the side cross member 13 is fixed to the lower surface of the side member 9, respectively. Will be done. Both ends of the first cross member 11 are fixed between the curved portions 131 and one end of the left and right side members 9.

上記のクロスメンバ構造では、湾曲部131を有するサイドクロスメンバ13によって、一対のサイドメンバ9の内側に一対のサイドクロスメンバ13が車長方向に延びる構成となる。サイドメンバ9とサイドクロスメンバ13との間には空間が形成される。この空間を利用して、後述する第1取付部132、第2取付部141、第1連結部31、又は第2連結部33を取り付けることができる。 In the above cross member structure, the side cross member 13 having the curved portion 131 extends the pair of side cross members 13 inside the pair of side members 9 in the vehicle length direction. A space is formed between the side member 9 and the side cross member 13. Using this space, the first mounting portion 132, the second mounting portion 141, the first connecting portion 31, or the second connecting portion 33, which will be described later, can be mounted.

第2クロスメンバ12、及びサイドクロスメンバ13は、いずれも断面が円形の中空管から構成される。これによって、軽量化が図られている。両部材の形状は特に限定されないが、例えば断面が多角形状の中空管から構成してもよい。 Both the second cross member 12 and the side cross member 13 are composed of a hollow tube having a circular cross section. As a result, the weight is reduced. The shapes of both members are not particularly limited, but may be composed of, for example, a hollow tube having a polygonal cross section.

第1クロスメンバ11は、図6及び図7に示したように、ビーム111と、ビーム111を補強するリインフォースメントメンバ112とを含む。ビーム111は、図6及び図7に示したように、車体の前面側に位置する第1ビーム11aと、車体の背面側に位置する第2ビーム11bとを含む。第1ビーム11aは、車体の正面側に配される第1壁111aと、第1壁111aの上端部から車体の背面側に向けて延びる第3壁111cとを含む。第1壁111aと第3壁111cとは連続する形状である。第2ビーム11bは、車体の背面側に配される第2壁111bと、第2壁111bの上端部から車体の正面側に向けて延びる第3壁111dとを含む。第2壁111bと第3壁111dとは連続する形状である。 The first cross member 11 includes a beam 111 and a reinforcement member 112 that reinforces the beam 111, as shown in FIGS. 6 and 7. As shown in FIGS. 6 and 7, the beam 111 includes a first beam 11a located on the front side of the vehicle body and a second beam 11b located on the back side of the vehicle body. The first beam 11a includes a first wall 111a arranged on the front side of the vehicle body and a third wall 111c extending from the upper end portion of the first wall 111a toward the back surface side of the vehicle body. The first wall 111a and the third wall 111c have a continuous shape. The second beam 11b includes a second wall 111b arranged on the back surface side of the vehicle body and a third wall 111d extending from the upper end portion of the second wall 111b toward the front surface side of the vehicle body. The second wall 111b and the third wall 111d have a continuous shape.

ビーム111は、第3壁111cと第3壁111dとが連続する一体の部材としてもよい。図6のように、ビームを分割することによって、ビーム111が複雑な形状であっても、曲げ加工やプレス成型によって、その複雑な形状に成形することができる。 The beam 111 may be an integral member in which the third wall 111c and the third wall 111d are continuous. As shown in FIG. 6, by dividing the beam, even if the beam 111 has a complicated shape, it can be formed into the complicated shape by bending or press molding.

ビームは、第1壁111aと、第2壁111bと、第3壁111c、111dとを備えており、一方の面である底面が解放された形状であって複雑な形状であるため、平板状のビームに比べて、捩じり運動や曲げ運動に対して強度が向上している。ビームの形状はこれに限定されず、クロスメンバ構造に求められる剛性を発揮できる構造であればよい。図6及び図7に示したように、ビーム111の強度をさらに向上させるために、ビーム111に対してリインフォースメントメンバ112が接合されている。 The beam includes a first wall 111a, a second wall 111b, and third walls 111c and 111d, and has a flat plate shape because the bottom surface, which is one surface, is open and has a complicated shape. Compared to the beam of, the strength is improved against twisting motion and bending motion. The shape of the beam is not limited to this, and any structure may be used as long as it can exhibit the rigidity required for the cross member structure. As shown in FIGS. 6 and 7, a reinforcement member 112 is joined to the beam 111 in order to further improve the intensity of the beam 111.

リインフォースメントメンバ112は、車両の正面側に配される第1壁112aと、車両の背面側に配される第2壁112bと、第1壁112aの上端部と第2壁112bの上端部と連続する第3壁112cとを含み、一方である下面が解放された形状となっている。リインフォースメントメンバの形状はこれに限定されず、クロスメンバ構造に求められる剛性を発揮できる構造であればよい。 The reinforcement member 112 includes a first wall 112a arranged on the front side of the vehicle, a second wall 112b arranged on the back side of the vehicle, an upper end portion of the first wall 112a, and an upper end portion of the second wall 112b. It includes a continuous third wall 112c, and one of the lower surfaces has an open shape. The shape of the reinforcement member is not limited to this, and any structure may be used as long as it can exhibit the rigidity required for the cross member structure.

図7に示したように、ビーム111にリインフォースメントメンバ112を内蔵させた状態で、ビーム111の第1壁111aとリインフォースメントメンバ112の第1壁112aの端部を溶接によって固定し、ビーム111の第2壁111bとリインフォースメントメンバ112の第2壁112bの端部を溶接によって固定する。ビーム111は、一方である下面が解放された形状になっているため、図7において黒塗りで示したように、ビーム111とリインフォースメントメンバ112とを解放された面から溶接することができる。図7に示したように、第1ビーム11aの第3壁111cと第2ビーム11bの第3壁111dとは重なった状態となっており、図7において黒塗りで示したように、一方の上面に対して他方の端部を溶接によって固定する。 As shown in FIG. 7, with the reinforcement member 112 incorporated in the beam 111, the ends of the first wall 111a of the beam 111 and the first wall 112a of the reinforcement member 112 are fixed by welding, and the beam 111 is fixed. The end of the second wall 111b of the above and the end of the second wall 112b of the reinforcement member 112 are fixed by welding. Since the lower surface of the beam 111 is open, the beam 111 and the reinforcement member 112 can be welded from the open surface as shown in black in FIG. 7. As shown in FIG. 7, the third wall 111c of the first beam 11a and the third wall 111d of the second beam 11b are in an overlapping state, and as shown in black in FIG. 7, one of them is in an overlapping state. The other end is fixed to the top surface by welding.

本実施形態のクロスメンバ構造1は、図8に示したように、例えばハブナックルなどの車輪の支持部材3にその一端部が連結される第1連結部31と、第1連結部31の他端部を支持する第1取付部132と、車輪の支持部材3にその一端部が連結される第2連結部33と、第2連結部33の他端部を支持する第2取付部141と、第1取付部132と第2取付部141とを支持する支持部15を含む。図9及び図10に太線で示したように、本実施形態のクロスメンバ構造1では、第1取付部132は支持部15の上部に対して溶接によって固定されており、第2取付部141は支持部15の下部に対して溶接によって固定されている。そして、第1取付部132と第2取付部141とは、支持部15の横で連続した一体の部材となっている。 As shown in FIG. 8, the cross member structure 1 of the present embodiment includes a first connecting portion 31 whose one end is connected to a wheel support member 3 such as a hub knuckle, and a first connecting portion 31. A first mounting portion 132 that supports the end portion, a second connecting portion 33 to which one end portion is connected to the wheel support member 3, and a second mounting portion 141 that supports the other end portion of the second connecting portion 33. , Includes a support portion 15 that supports the first mounting portion 132 and the second mounting portion 141. As shown by thick lines in FIGS. 9 and 10, in the cross member structure 1 of the present embodiment, the first mounting portion 132 is fixed to the upper portion of the support portion 15 by welding, and the second mounting portion 141 is fixed. It is fixed to the lower part of the support portion 15 by welding. The first mounting portion 132 and the second mounting portion 141 are continuous and integrated members beside the support portion 15.

図9及び図10において矢印Aで示したように、車体の上方に向けて荷重(以下、突き上げ荷重という。)が入力されると、第1連結部31に引っ張られて第1取付部132は斜め上方に引っ張られる。同様に第2連結部33に引っ張られて第2取付部141も斜め上方に引っ張られる。図9及び図10に示しように、第1取付部132と第2取付部141は、支持部15の横で連続した一体の部材となっているため、突き上げ荷重は、支持部15の上部における接合部分Cだけではなく、支持部15の下部における接合部分Dによっても分散して支持される。これによって、突き上げ荷重が作用した際に支持部15の上部の接合部分Cに負荷が集中することに起因する接合部分Cやその周辺の第1取付部132や支持部15が破損することを防ぐことが可能になる。 As shown by the arrow A in FIGS. 9 and 10, when a load (hereinafter referred to as a push-up load) is input toward the upper part of the vehicle body, the first mounting portion 132 is pulled by the first connecting portion 31. It is pulled diagonally upward. Similarly, the second mounting portion 141 is also pulled diagonally upward by being pulled by the second connecting portion 33. As shown in FIGS. 9 and 10, since the first mounting portion 132 and the second mounting portion 141 are continuous integral members beside the support portion 15, the push-up load is applied to the upper portion of the support portion 15. It is dispersed and supported not only by the joint portion C but also by the joint portion D in the lower part of the support portion 15. This prevents the joint portion C and the first mounting portion 132 and the support portion 15 around the joint portion C from being damaged due to the load being concentrated on the joint portion C at the upper part of the support portion 15 when the push-up load is applied. Will be possible.

図9及び図10において矢印Bで示したように、車体の下方に向けて荷重(以下、戻り荷重という。)が入力されると、第1連結部31に引っ張られて第1取付部132は斜め下方に引っ張られる。同様に第2連結部33に引っ張られて第2取付部141も斜め下方に引っ張られる。図9及び図10に示したように、第1取付部132と第2取付部141は、支持部15の横で連続した一体の部材となっているため、戻り荷重は支持部15の下部における接合部分Dだけではなく、支持部15の上部における接合部分Cによっても分散して支持される。これによって、戻り荷重が作用した際に支持部15の下部の接合部分Dに負荷が集中することによる接合部分Dやその周辺の第2取付部141や支持部15が破損することを防ぐことが可能になる。突き上げ荷重又は戻り荷重は、例えば、車輪が凹凸の上を通過する際に生じる。突き上げ荷重は、車両の速度が大きくなるほど大きくなる。戻り荷重には、コイルスプリングなどのサスペンション装置を構成する部品である緩衝部材の力も付加される。 As shown by the arrow B in FIGS. 9 and 10, when a load (hereinafter referred to as a return load) is input toward the lower part of the vehicle body, the first mounting portion 132 is pulled by the first connecting portion 31. It is pulled diagonally downward. Similarly, the second mounting portion 141 is also pulled diagonally downward by being pulled by the second connecting portion 33. As shown in FIGS. 9 and 10, since the first mounting portion 132 and the second mounting portion 141 are continuous integral members beside the support portion 15, the return load is applied to the lower part of the support portion 15. It is dispersed and supported not only by the joint portion D but also by the joint portion C in the upper part of the support portion 15. As a result, it is possible to prevent the joint portion D and the second mounting portion 141 and the support portion 15 around the joint portion D from being damaged due to the load being concentrated on the joint portion D at the lower portion of the support portion 15 when the return load is applied. It will be possible. Push-up or return loads occur, for example, as the wheel passes over bumps and dips. The push-up load increases as the speed of the vehicle increases. The force of the cushioning member, which is a component constituting the suspension device such as a coil spring, is also added to the return load.

本実施形態のクロスメンバ構造1では、第1取付部132は、車幅方向に延びる部分を有する。具体的には、第1取付部132は、図9及び図10に示したように、車体の正面側に配される第1壁132aと、車体の背面側に配される第2壁132bと、車体の中央側の側面に配されており第1壁132aと第2壁132bの端部と連続する第3壁132cとを有しており、車体の上方と外側の側面とが解放された形状である。第1壁132a及び第2壁132bには貫通孔82a、82bがそれぞれ設けられており、図8に示したように、第1連結部31の他端部が上下に軸動可能な状態で支持されている。第1壁132a及び第2壁132bは、車幅方向に延びる形状であり、支持部15の上部に対してその下縁部が当接する構造となっている。 In the cross member structure 1 of the present embodiment, the first mounting portion 132 has a portion extending in the vehicle width direction. Specifically, as shown in FIGS. 9 and 10, the first mounting portion 132 includes a first wall 132a arranged on the front side of the vehicle body and a second wall 132b arranged on the back side of the vehicle body. , It has a third wall 132c that is arranged on the central side surface of the vehicle body and is continuous with the ends of the first wall 132a and the second wall 132b, and the upper and outer side surfaces of the vehicle body are released. The shape. Through holes 82a and 82b are provided in the first wall 132a and the second wall 132b, respectively, and as shown in FIG. 8, the other end of the first connecting portion 31 is supported in a state where it can be axially moved up and down. Has been done. The first wall 132a and the second wall 132b have a shape extending in the vehicle width direction, and have a structure in which the lower edge portion thereof abuts on the upper portion of the support portion 15.

上記の構造では、第1壁132a及び第2壁132bが支持部15の上部に当接するため、戻り荷重が車輪の支持部材3から入力された際に、第1壁132a及び第2壁132bの下端部が支持部15の上部に当接することによって、入力された荷重が支持される。これによって、第1取付部132及び第2取付部141の接合部分C、D、特に下方に引っ張られる接続部分Dが入力された負荷によって破損することが防止される。図10及び図11の例では、接合部分は溶接されているので溶接個所の破断が防止される。接合部分を螺子、ボルト、又は螺子受などの固定具とした場合は、固定具と固定具を取り付ける部材の破損が防止される。 In the above structure, since the first wall 132a and the second wall 132b abut on the upper part of the support portion 15, when the return load is input from the support member 3 of the wheel, the first wall 132a and the second wall 132b The input load is supported by the lower end portion abutting on the upper portion of the support portion 15. This prevents the joint portions C and D of the first mounting portion 132 and the second mounting portion 141, particularly the connecting portion D pulled downward, from being damaged by the input load. In the examples of FIGS. 10 and 11, since the joint portion is welded, breakage of the welded portion is prevented. When the joint portion is a fixing tool such as a screw, a bolt, or a screw receiver, damage to the fixing tool and the member to which the fixing tool is attached is prevented.

本実施形態のクロスメンバ構造1では、第2取付部141は、車幅方向に延びる部分であって、支持部15の下部に当接する部分を有する。具体的には、第2取付部141は、図9及び図10に示したように、第1クロスメンバ11を構成するビーム111の端部を利用している。これによって、省スペース化と軽量化を図っている。第2取付部141は、車体の正面側に配されるビームの第1壁111aと、車体の背面側に配されるビームの第2壁111bとを有しており、一方の面である底面が解放された形状となっている。ビーム111の第1壁111a及びビームの第2壁111bには、貫通孔81a、81bがそれぞれ設けられている。貫通孔81a、81bには、図8に示したように第2連結部33の他端部が上下に軸動可能な状態で軸支されている。ビーム111の第1壁111a及び第2壁111bは、車幅方向に延びる形状であり、支持部15の下部に当接する構造となっている。 In the cross member structure 1 of the present embodiment, the second mounting portion 141 has a portion extending in the vehicle width direction and having a portion that abuts on the lower portion of the support portion 15. Specifically, as shown in FIGS. 9 and 10, the second mounting portion 141 utilizes the end portion of the beam 111 constituting the first cross member 11. This saves space and weight. The second mounting portion 141 has a first wall 111a of the beam arranged on the front side of the vehicle body and a second wall 111b of the beam arranged on the back side of the vehicle body, and has a bottom surface which is one surface. Has an open shape. Through holes 81a and 81b are provided in the first wall 111a of the beam 111 and the second wall 111b of the beam, respectively. As shown in FIG. 8, the other end of the second connecting portion 33 is pivotally supported in the through holes 81a and 81b in a state where the second connecting portion 33 can be axially moved up and down. The first wall 111a and the second wall 111b of the beam 111 have a shape extending in the vehicle width direction and have a structure of contacting the lower portion of the support portion 15.

ビーム111の第1壁111a及び第2壁111bが支持部15の下部に当接するため、突き上げ荷重が車輪の支持部材から入力された際に、第1壁111a及び第2壁111bの上縁部が支持部15の下部に当接することによって、入力された荷重が支持される。これによって、第1取付部132及び第2取付部141の接合部分C、D、特に上方に引っ張られる接続部分Cが入力された負荷によって破損することが防止される。図10及び図11の例では、接合部分は溶接されているので溶接個所の破断が防止される。接合部分を螺子、ボルト、又は螺子受などの固定具とした場合は、固定具と固定具を取り付ける部材の破損が防止される。 Since the first wall 111a and the second wall 111b of the beam 111 come into contact with the lower part of the support portion 15, when a push-up load is input from the support member of the wheel, the upper edges of the first wall 111a and the second wall 111b Is in contact with the lower part of the support portion 15, so that the input load is supported. This prevents the joint portions C and D of the first mounting portion 132 and the second mounting portion 141, particularly the connecting portion C pulled upward, from being damaged by the input load. In the examples of FIGS. 10 and 11, since the joint portion is welded, breakage of the welded portion is prevented. When the joint portion is a fixing tool such as a screw, a bolt, or a screw receiver, damage to the fixing tool and the member to which the fixing tool is attached is prevented.

本実施形態のクロスメンバ構造1では、図9及び図10に示したように、第1取付部132と第2取付部141とは、別々に成形された部材としている。これによって、第1取付部132、第2取付部141、又はビーム111といった各部材を複雑な形状にしても、金属板材のプレス成型又は曲げ成型によって、第1取付部132、第2取付部141、又はビーム111といった各部材を成形することが可能になっている。 In the cross member structure 1 of the present embodiment, as shown in FIGS. 9 and 10, the first mounting portion 132 and the second mounting portion 141 are separately molded members. As a result, even if each member such as the first mounting portion 132, the second mounting portion 141, or the beam 111 has a complicated shape, the first mounting portion 132 and the second mounting portion 141 can be formed by press molding or bending molding of the metal plate material. , Or each member such as the beam 111 can be molded.

本実施形態のクロスメンバ構造1では、第1取付部132に車体の下方に延びる第1接続部132dが設けられる。また、第2取付部141に車体の上方に延びる第2接続部111が設けられる。第1接続部132d及び第2接続部111を支持部15の横で溶接によって接合する。これによって、別々に成形された第1取付部132と第2取付部141とを支持部の側面で連続した一体の部材としている。
In the cross member structure 1 of the present embodiment, the first mounting portion 132 is provided with a first connecting portion 132d extending below the vehicle body. Further, the second mounting portion 141 is provided with a second connecting portion 111 f extending above the vehicle body. The first connection portion 132d and the second connection portion 111 f are joined by welding next to the support portion 15. As a result, the separately molded first mounting portion 132 and the second mounting portion 141 are made into a continuous integrated member on the side surface of the support portion.

第1接続部132dは、第1取付部132の第2壁132bと連続する形状であり、下縁部は支持部の外形に沿う形状であり、車長方向に沿って溶接用の平坦部を備える形状である。図10に示したように、第1接続部132dの下縁部は、支持部15の外形に沿う形状とされている。また、第1取付部132の下縁部も支持部15の外形に沿う形状とされている。これによって、第1取付部132及び第1接続部132dが支持部15に接触する面積を増大させて、単位面積当たりに作用する荷重を小さくすると共に溶接する面積を増大させている。 The first connection portion 132d has a shape continuous with the second wall 132b of the first mounting portion 132, the lower edge portion has a shape along the outer shape of the support portion, and a flat portion for welding is formed along the vehicle length direction. It is a shape to be provided. As shown in FIG. 10, the lower edge portion of the first connecting portion 132d has a shape that follows the outer shape of the supporting portion 15. Further, the lower edge portion of the first mounting portion 132 is also shaped to follow the outer shape of the support portion 15. As a result, the area in which the first mounting portion 132 and the first connecting portion 132d come into contact with the support portion 15 is increased, the load acting per unit area is reduced, and the welding area is increased.

第2接続部111は、ビーム111の第1壁111aと連続し車体の上方に延びる形状であり、支持部15の下部から側面に沿う形状である。図9の例では、第2接続部111は、平板から構成した湾曲部を有する腕状の部材であり、ビーム111の第1壁111aに対して溶接によって固定されている。図9及び図10に示したように、第2接続部111の内縁部は、支持部15の外形に沿う形状とされている。また、第2取付部141の上縁部も支持部の外形に沿う形状とされている。これによって、第2取付部141及び第2接続部111が支持部15に接触する面積を増大させて、単位面積当たりに作用する荷重を小さくすると共に溶接する面積を増大させている。
The second connecting portion 111 f has a shape continuous with the first wall 111 a of the beam 111 and extends upward of the vehicle body, and has a shape along the side surface from the lower portion of the support portion 15. In the example of FIG. 9, the second connecting portion 111 f is an arm-shaped member having a curved portion composed of a flat plate, and is fixed to the first wall 111 a of the beam 111 by welding. As shown in FIGS. 9 and 10, the inner edge portion of the second connecting portion 111 f has a shape that follows the outer shape of the support portion 15. Further, the upper edge portion of the second mounting portion 141 is also shaped to follow the outer shape of the support portion. As a result, the area in which the second mounting portion 141 and the second connecting portion 111 f come into contact with the support portion 15 is increased, the load acting per unit area is reduced, and the welding area is increased.

図9及び図10において太線で示したように、第1接続部132dの平坦部に第2接続部111の内縁部を当接させた状態で両者を溶接によって固定することで、第1接続部132dと第2接続部111とは、連続した一体の部材とされている。
As shown by the thick line in FIGS. 9 and 10, the first connection is made by fixing the two to the flat portion of the first connection portion 132d by welding while the inner edge portion of the second connection portion 111 f is in contact with the flat portion. The portion 132d and the second connecting portion 111f are continuous and integrated members.

第1接続部及び第2接続部のうちいずれか一方は省略して第1取付部と第2取付部を接合する接続部を一つ設ける構成にしてもよい。また、第1取付部と第2取付部と接続部とを一体に成形してもよい。いずれの場合においても、接続部は、支持部15の外形に沿って当接する部分を備える形状とすることが好ましい。 Either one of the first connection portion and the second connection portion may be omitted, and one connection portion for joining the first mounting portion and the second mounting portion may be provided. Further, the first mounting portion, the second mounting portion, and the connecting portion may be integrally formed. In any case, it is preferable that the connecting portion has a shape including a portion that abuts along the outer shape of the support portion 15.

本実施形態のクロスメンバ構造1では、第1取付部132及び第2取付部141を支持する支持部15は、車長方向に延びる棒状の部材であるサイドクロスメンバ13を利用している。その他、棒状の部材として、例えば、第1クロスメンバ11、第2クロスメンバ、又はサイドメンバ9を利用してもよい。第1クロスメンバ11、又は第2クロスメンバ12などの車幅方向に延びる部材を支持部として利用する場合は、第1取付部132と第2取付部141は、支持部15の正面又は背面で連続する。正面及び背面も支持部の横に含まれるものとする。その他、支持部としては、例えば、側面と底面と上面とを有する箱状のクロスメンバなどを利用してもよい。 In the cross member structure 1 of the present embodiment, the support portion 15 that supports the first mounting portion 132 and the second mounting portion 141 utilizes a side cross member 13 that is a rod-shaped member extending in the vehicle length direction. In addition, as the rod-shaped member, for example, the first cross member 11, the second cross member, or the side member 9 may be used. When a member extending in the vehicle width direction such as the first cross member 11 or the second cross member 12 is used as a support portion, the first mounting portion 132 and the second mounting portion 141 are mounted on the front surface or the back surface of the support portion 15. Continuous. The front and back shall also be included next to the support. In addition, as the support portion, for example, a box-shaped cross member having a side surface, a bottom surface, and an upper surface may be used.

上記のクロスメンバ構造では、車輪の支持部材3は、図8に示したように、第1連結部31、第2連結部33に加えて、第3連結部32によっても支えられる。第3連結部32の一端部は車輪の支持部材3に上下に軸動可能な状態で軸支される。第3連結部32の他端部は第2クロスメンバ12の下面に設けられた第3取付部121に上下に軸動可能な状態で軸支される。第3取付部121は、車体の正面側に配される第1壁121a、車体の背面側に配される第2壁121bと、第1壁121aと第2壁121bとの下端部と連続する第3壁121cと有し、車体の両側面は解放された形状である。第3取付部121の第1壁121aと第2壁121bとには、貫通孔83a、83bがそれぞれもうけられており、第3連結部32の他端部が軸支される。 In the above cross-member structure, the wheel support member 3 is supported by the third connecting portion 32 in addition to the first connecting portion 31 and the second connecting portion 33, as shown in FIG. One end of the third connecting portion 32 is pivotally supported by the support member 3 of the wheel in a state where it can be axially moved up and down. The other end of the third connecting portion 32 is pivotally supported by a third mounting portion 121 provided on the lower surface of the second cross member 12 so as to be axially movable up and down. The third mounting portion 121 is continuous with the first wall 121a arranged on the front side of the vehicle body, the second wall 121b arranged on the back side of the vehicle body, and the lower ends of the first wall 121a and the second wall 121b. It has a third wall 121c, and both side surfaces of the vehicle body have an open shape. Through holes 83a and 83b are provided in the first wall 121a and the second wall 121b of the third mounting portion 121, respectively, and the other end of the third connecting portion 32 is pivotally supported.

上記のクロスメンバ構造1では、第1連結部31、第2連結部33、及び第3連結部32は、それぞれリンクロッドから構成される。そして、第1連結部31、第2連結部33、及び第3連結部32は、リンク機構を構成しており、入力される荷重に応じて、車輪の支持部材を上下に変位させることができる。第1連結部及び第2連結部は、リンクロッドに限定されず、例えば、ロアアームやアッパアーム等に替えてもよい。 In the cross member structure 1 described above, the first connecting portion 31, the second connecting portion 33, and the third connecting portion 32 are each composed of a link rod. The first connecting portion 31, the second connecting portion 33, and the third connecting portion 32 form a link mechanism, and the support member of the wheel can be displaced up and down according to the input load. .. The first connecting portion and the second connecting portion are not limited to the link rod, and may be replaced with, for example, a lower arm, an upper arm, or the like.

上記のクロスメンバ構造1は、リアクロスメンバである例を挙げて説明したが、フロントクロスメンバとして利用することも可能である。また、上記のクロスメンバ構造1では、ビームの端部を第2取付部として利用したが、ビームとは別の第2取付部を設けてもよい。第1取付部と第2取付部の形状は、上記の例に限定されず、第1連結部及び第2連結部をそれぞれ軸支できるものであればよい。 Although the cross member structure 1 described above has been described with an example of being a rear cross member, it can also be used as a front cross member. Further, in the above-mentioned cross member structure 1, the end portion of the beam is used as the second mounting portion, but a second mounting portion different from the beam may be provided. The shapes of the first mounting portion and the second mounting portion are not limited to the above examples, and may be any shape as long as the first connecting portion and the second connecting portion can be pivotally supported.

1 クロスメンバ構造
3 車輪の支持部材
31 第1連結部
132 第1取付部
33 第2連結部
141 第2取付部
11 第1クロスメンバ
12 第2クロスメンバ
13 サイドクロスメンバ


1 Cross member structure 3 Wheel support member 31 1st connecting part 132 1st mounting part 33 2nd connecting part 141 2nd mounting part 11 1st cross member 12 2nd cross member 13 Side cross member


Claims (6)

車輪の支持部材を支持するクロスメンバ構造であって、
クロスメンバ構造は、車輪の支持部材に連結される第1連結部を支持する第1取付部と、
車輪の支持部材に連結される第2連結部を支持する第2取付部と、
第1取付部と第2取付部とを支持する支持部とを含むクロスメンバ構造であり、
第1取付部は支持部の上部に対して固定されており、
第2取付部は支持部の下部に対して固定されており、
第1取付部と第2取付部とは、金属板材で構成され、別々に成形された部材であり、
第1取付部は、車体の下方に延びる第1接続部を備えており、
第1取付部の第1接続部と、第2取付部に固定され、第1取付部と第2取付部との間に延在し、金属板材で構成された第2接続部とを、支持部の横で接合することによって、第1取付部と第2取付部とは一体の部材とされており、
第2接部は、第1取付部と第2取付部とは、別々に成形された部材である自動車用クロスメンバ構造。
It is a cross member structure that supports the wheel support members, and has a cross member structure.
The cross member structure includes a first mounting portion that supports the first connecting portion that is connected to the wheel support member, and a first mounting portion.
A second mounting part that supports the second connecting part that is connected to the wheel support member,
It is a cross member structure including a support portion that supports the first mounting portion and the second mounting portion.
The first mounting part is fixed to the upper part of the support part,
The second mounting part is fixed to the lower part of the support part.
The first mounting portion and the second mounting portion are members made of a metal plate and molded separately.
The first mounting portion includes a first connecting portion extending below the vehicle body.
Supports the first connection portion of the first mounting portion, the second connection portion fixed to the second mounting portion, extending between the first mounting portion and the second mounting portion, and made of a metal plate material. By joining on the side of the part, the first mounting part and the second mounting part are made into an integral member.
The second connection portion has a cross member structure for automobiles, in which the first mounting portion and the second mounting portion are separately molded members.
第2取付部は、車幅方向に延びる部分を備えており、車幅方向に延びる部分が支持部の下部に当接する請求項1に記載の自動車用クロスメンバ構造。 The cross-member structure for automobiles according to claim 1, wherein the second mounting portion includes a portion extending in the vehicle width direction, and the portion extending in the vehicle width direction abuts on the lower portion of the support portion. 第1取付部は、車幅方向に延びる部分を備えており、車幅方向に延びる部分が支持部の上部に当接する請求項1又は2に記載の自動車用クロスメンバ構造。 The cross-member structure for automobiles according to claim 1 or 2, wherein the first mounting portion includes a portion extending in the vehicle width direction, and the portion extending in the vehicle width direction abuts on the upper portion of the support portion. 第2取付部は、車幅方向に延びる形状であり、リインフォースメントメンバを内蔵する形状である請求項1ないし3のいずれかに記載の自動車用クロスメンバ構造。 The cross-member structure for automobiles according to any one of claims 1 to 3, wherein the second mounting portion has a shape extending in the vehicle width direction and a shape having a built-in reinforcement member. 第1取付部及び第2取付部の支持部は、車長方向に延びる棒状の部材である請求項1ないし4のいずれかに記載の自動車用クロスメンバ構造。 The cross-member structure for automobiles according to any one of claims 1 to 4, wherein the support portion of the first mounting portion and the second mounting portion is a rod-shaped member extending in the vehicle length direction. 車幅方向に延び車体の背面側に位置する第1クロスメンバと、車幅方向に延び車体の正面側に位置する第2クロスメンバと、第2クロスメンバと第1クロスメンバとを接続するように車長方向に延びるサイドクロスメンバとを含む、自動車用クロスメンバ構造であって、
第1取付部と第2取付部とを支持する支持部は、サイドクロスメンバである請求項1ないし5のいずれかに記載の自動車用クロスメンバ構造。

To connect the first cross member extending in the vehicle width direction and located on the back side of the vehicle body, the second cross member extending in the vehicle width direction and located on the front side of the vehicle body, and the second cross member and the first cross member. It is a cross member structure for automobiles including a side cross member extending in the vehicle length direction.
The cross-member structure for automobiles according to any one of claims 1 to 5, wherein the support portion that supports the first mounting portion and the second mounting portion is a side cross member.

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