JP4025052B2 - Suspension member - Google Patents

Suspension member Download PDF

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Publication number
JP4025052B2
JP4025052B2 JP2001324964A JP2001324964A JP4025052B2 JP 4025052 B2 JP4025052 B2 JP 4025052B2 JP 2001324964 A JP2001324964 A JP 2001324964A JP 2001324964 A JP2001324964 A JP 2001324964A JP 4025052 B2 JP4025052 B2 JP 4025052B2
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Japan
Prior art keywords
lower arm
suspension member
mounting portion
attachment portion
attachment
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Expired - Fee Related
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JP2001324964A
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Japanese (ja)
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JP2003127892A (en
Inventor
明義 渡辺
明範 市川
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Toyota Auto Body Co Ltd
Toyota Motor Corp
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Toyota Auto Body Co Ltd
Toyota Motor Corp
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Priority to JP2001324964A priority Critical patent/JP4025052B2/en
Publication of JP2003127892A publication Critical patent/JP2003127892A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
    • B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
    • B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
    • B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
    • B60G21/055—Stabiliser bars
    • B60G21/0551—Mounting means therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2200/00—Indexing codes relating to suspension types
    • B60G2200/10—Independent suspensions
    • B60G2200/14—Independent suspensions with lateral arms
    • B60G2200/154—Independent suspensions with lateral arms the lateral arm having an L-shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/12—Mounting of springs or dampers
    • B60G2204/122—Mounting of torsion springs
    • B60G2204/1222—Middle mounts of stabiliser on vehicle body or chassis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/14—Mounting of suspension arms
    • B60G2204/143—Mounting of suspension arms on the vehicle body or chassis
    • B60G2204/1431—Mounting of suspension arms on the vehicle body or chassis of an L-shaped arm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/14—Mounting of suspension arms
    • B60G2204/143—Mounting of suspension arms on the vehicle body or chassis
    • B60G2204/1432—Mounting of suspension arms on the vehicle body or chassis by vertical bolts or studs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/10—Mounting of suspension elements
    • B60G2204/15—Mounting of subframes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/41—Elastic mounts, e.g. bushings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
    • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
    • B60G2204/44—Centering or positioning means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
    • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
    • B60G2206/60—Subframe construction

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)
  • Vehicle Body Suspensions (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明はサスペンションメンバに係り、特に、ロアアームが取付けられボデーに取付けるサスペンションメンバに関する。
【０００２】
【従来の技術】
従来、この種のサスペンションメンバとしては、例えば、図１７に示されているものがある。
【０００３】
このサスペンションメンバでは、フロントサスペンションメンバ１００の前方側取付部１００Ａに、ロアアーム１０２の前方側アーム１０２Ａがボルト１０４によって取付けられており、フロントサスペンションメンバ１００の後方側取付部１００Ｂに、ロアアーム１０２の後方側アーム１０２Ｂがボルト１０６によって取付けられている。
【０００４】
【発明が解決しようとする課題】
しかしながら、このサスペンションメンバでは、ロアアーム１０２の入力荷重に対して強度、締結性能及び剛性を確保するため、フロントサスペンションメンバ１００における後方側取付部１００Ｂの下方に別部品のブレース１０８を配設し、このブレース１０８とボデーとに間に後方側取付部１００Ｂを挟み込む構成としている。この結果、部品点数が増加するという不具合がある。これを改善するには、ブレース１０８を含めたフロントサスペンションメンバ１００全体を鋳造により製造することが考えられるが、この場合には、機械加工による仕上げが必要になる部位が多くなり生産性が低下すると共に、厚肉部が多くなり重量増加が問題になる。
【０００５】
本発明は上記事実を考慮し、生産性を向上できると共に軽量化が可能なサスペンションメンバを得ることが目的である。
【０００６】
【課題を解決するための手段】
請求項１記載の本発明におけるサスペンションメンバは、後方取付部のロアアーム取付部が袋形状であり、該ロアアーム取付部がボデーに取付けられるボデー取付部と異なる位置に設定されていると共に、異なる位置に設定されている前方取付部のロアアーム取付部とボデー取付部とが縦壁部によって真っ直ぐに連結されていることを特徴とする。
【０００７】
従って、後方取付部のロアアーム取付部が袋形状であり、このロアアーム取付部がボデーに取付けられるボデー取付部と異なる位置に設定されているため、機械加工が容易になり、生産性を向上できる。また、厚肉部を最小にすることができるので、軽量化が可能になる。さらに、前方取付部のロアアーム取付部とボデー取付部とが異なる位置に設定されており、縦壁部によって真っ直ぐに連結されているため、ロアアームからの入力をボデーへ効率良く伝達できる。
【０００８】
請求項２記載の本発明は、請求項１に記載のサスペンションメンバにおいて、前記前方取付部のロアアーム取付部に形成された貫通孔にブッシュが圧入されていることを特徴とする。
【０００９】
従って、前方取付部のロアーム取付部に形成された貫通孔にブッシュが圧入されているため、スペースに余裕のあるロアアーム側に撓み代を形成することができると共に、ロアアーム側に厚肉等による補強を行うことが可能となる。この結果、サスペンションメンバの肉厚を薄くすることができるため、サスペンションメンバの生産性を向上できると共に軽量化が可能となる。
【００１０】
請求項３記載の本発明は、請求項１、２の何れか１項に記載のサスペンションメンバにおいて、少なくとも後方取付部のロアアーム取付部が、他の部位よりも肉厚とされた凸形状部であり、該凸形状部は機械加工部であることを特徴とする。
【００１１】
従って、サスペンションメンバにおける少なくとも後方取付部のロアアーム取付部が、他の部位よりも肉厚とされた凸形状部であり、凸形状部が機械加工部であるため、機械加工部を凹形状とする場合に比べ、加工代を考慮しても、機械加工範囲が狭くなくなると共に機械加工が容易になり、生産性を向上できる。また、厚肉部を最小にすることができるので、軽量化が可能になる。
【００１２】
請求項４記載の本発明は、請求項１、２の何れか１項に記載のサスペンションメンバにおいて、前記後方取付部のロアアーム取付部の上壁部が傾斜部を有し、前記ロアアーム取付部の下壁部がボデー取付部と真っ直ぐに繋がっていることを特徴とする。
【００１３】
従って、ロアアーム組付時、カラーを後方取付部のロアアーム取付部の上壁部と下壁部との間に挟む際に、上壁部の傾斜部により、上壁部が組付け方向に容易に撓む。この結果、上壁部または下壁部とカラーとの間に隙間を設定する必要がないので組付歪が無くなる。また、後方取付部のロアアーム取付部の下壁部がボデー取付部と真っ直ぐに繋がっているため、後方取付部のロアアームの入力に対して、上壁部と下壁部との剛性差により、上壁部側の分担荷重に比べ、下壁部側の分担荷重を大きくできる。このため、下壁部とボデー取付部との間を補強することでロアアームからの入力に対する強度も向上できる。
【００１４】
【発明の実施の形態】
本発明におけるサスペンションメンバの第１実施形態を図１〜図４に従って説明する。
【００１５】
なお、図中矢印ＦＲは車両前方方向を、矢印ＩＮは車幅内側方向を、矢印ＵＰは車両上方方向を示す。
【００１６】
図２に示される如く、本実施形態のフロントサスペンションメンバ１０は、前部の車幅方向両端部に形成された前方取付部１２と、後部の車幅方向両端部に形成された後方取付部１４において、例えば、直接あるいはゴムブッシュのような弾性を持つマウント機構を介してボデーとしての左右のフロントサイドメンバ１６に取り付けられている。
【００１７】
図１に示される如く、フロントサスペンションメンバ１０の後方取付部１４においては、Ｉアーム２本のからなるダブルジョイントのロアアーム２０の後方側アーム２０Ａを支持するロアアーム取付部１４Ａと、ロアアーム取付部１４Ａの後方へ延設された、ロアアーム取付部１４Ａと異なる位置にボデー取付部１４Ｂが一体的に形成されている。
【００１８】
フロントサスペンションメンバ１０のロアアーム取付部１４Ａとフロントサイドメンバ１６との間には、ロアアーム２０の後方側アーム２０Ａが締結手段としてのボルト２２によってカラー２１を介して軸支されており、ロアアーム取付部１４Ａには、後方側アーム２０Ａを上方から覆うブラケットカバー２２が配設されている。また、ボルト２２は、ワッシャ２３、ロアアーム取付部１４Ａ、カラー２１、ブラケットカバー２２及びフロントサイドメンバ１６を下方から貫通しており、フロントサイドメンバ１６の断面内部上面に配設されたナット２４に螺合している。
【００１９】
一方、フロントサスペンションメンバ１０のボデー取付部１４Ｂは、ブラケットカバー２２を挟んでフロントサイドメンバ１６に締結手段としてのボルト２６によって固定されており、ボルト２６は、ボデー取付部１４Ｂ、ブラケットカバー２２及びフロントサイドメンバ１６を下方から貫通しており、フロントサイドメンバ１６の断面内部上面に配設されたナット２８に螺合している。
【００２０】
図３に示される如く、フロントサスペンションメンバ１０の前方取付部１２においては、ロアアーム２０の前方側アーム２０Ｂを取付けるロアアーム取付部１２Ａと、ロアアーム取付部１２Ａと異なる位置となるロアアーム取付部１２Ａの上方に形成され、フロントサイドメンバ１６へ取付けるボデー取付部１２Ｂと、が一体構造とされている。
【００２１】
図４に示される如く、ロアアーム取付部１２Ａに車両前後方向に沿って形成された貫通孔３０には、ブッシュ３２が圧入されており、このブッシュ３２に介して、ロアアーム２０の前方側アーム２０Ｂが、ボルト３４とナット３６とで取付けられている。従って、ドライブシャフト３９等の干渉が無く、車両前後方向等にスペースの余裕があるロアアーム２０の前方側アーム２０Ｂに撓み代Ｔを設定すると共に、ロアアーム２０側に厚肉等による補強を行うことが可能となっている。
【００２２】
また、フロントサスペンションメンバ１０の前方取付部１２のロアアーム取付部１２Ａとボデー取付部１２Ｂは、縦壁部１２Ｃによって真っ直ぐに連結されており、縦壁部１２Ｃの車両前後方向となる両面には、それぞれロアアーム取付部１２Ａとボデー取付部１２Ｂとを繋ぐ補強用のリブ４０、４２が形成されている。
【００２３】
次に、本実施形態の作用を説明する。
【００２４】
本実施形態では、ロアアーム２０の後方側アーム２０Ａを、フロントサイドメンバ１６と、フロントサスペンションメンバ１０のロアアーム取付部１４Ａとで挟持し、ボルト２２で共締めすると共に、フロントサスペンションメンバ１０を延設しボデー取付部１４Ｂを形成し、このボデー取付部１４Ｂをボルト２６によって、フロントサイドメンバ１６に固定したため、部品点数が低減でき、コストも低減できる。
【００２５】
また、ロアアーム取付部におけるへたり面が、フロントサスペンションメンバ１０のロアアーム取付部１４Ａにおける、ロアアーム２０の後方側アーム２０Ａとの当接面Ｓ１と、ワッシャ２３との当接面Ｓ２との２面に減少する。この結果、へたりによる取付部の軸力の損失を低減でき、設定軸力を下げることができるの。このため、ボルト２２に細いボルトを使用できるので、コスト及び重量も低減できる。
【００２６】
また、本実施形態では、ロアアーム取付部１２Ａに形成された貫通孔３０にブッシュ３２を圧入し、このブッシュ３２に介して、ロアアーム２０の前方側アーム２０Ｂがロアアーム取付部１２Ａに取付けられており、スペースに余裕のあるロアアーム２０の前方側アーム２０Ｂに撓み代を設定したため、ロアアーム取付部１２Ａ側に組付歪により応力は発生しない。この結果、組付歪により発生する応力に備えてロアアーム取付部１２Ａを厚肉にし補強する必要がないので、フロントサスペンションメンバ１０の生産性を向上できると共に軽量化が可能になる。更にフロントサスペンションメンバ１０をコンパクトにできる。
【００２７】
また、フロントサスペンションメンバ１０の前方取付部１２のロアアーム取付部１２Ａとボデー取付部１２Ｂが、縦壁部１２Ｃによって真っ直ぐに連結されているため、ロアアーム２０からの入力をフロントサイドメンバ１６へ効率良く伝達できると共に、リブ４０、４２の補強により、ボデー取付部１２Ｂの強度及び剛性を確保することができる。また、フロントサスペンションメンバ１０の前方取付部１２のロアアーム取付部１２Ａとボデー取付部１２Ｂとが一体構造とされているため、別部材との機械的結合を無くすことができ、重量及びコストを低減できる。
【００２８】
また、ロアアーム取付部１２Ａに形成された貫通孔３０にブッシュ３２を圧入し、このブッシュ３２に介して、ロアアーム２０の前方側アーム２０Ｂがロアアーム取付部１２Ａに取付けられているため、図４に示される如く、ボデー取付部１２Ｂの中心線Ｍ１と前方側アーム２０Ｂの中心点Ｐ１とのオフセット量Ｌ１が、図５に示される従来技術のように、フロントサスペンションメンバ１２０のロアアーム取付部１２０Ａと別部材１２２との間でロアアームの取付部１２４を支持する場合の、ボデー取付部１２０Ｂの中心線Ｍ２とロアアームの取付部１２４の中心点Ｐ２とのオフセット量Ｌ２に比べ小さくすることができる。この結果、本実施形態では、ロアアーム取付部１２Ａの剛性がアップする。
【００２９】
なお、ロアアームにＬアームを使用する場合には、図６に示される如く、ロアアーム取付部１２Ａに図６に矢印Ａで示す車両前後方向のこじりが発生する。このため、ロアアーム取付部１２Ａの後方側に車両後方に延びるリブ４６を形成することで、このこじり力に対する剛性及び強度を向上できる。
【００３０】
次に、本発明におけるサスペンションメンバの第２実施形態を図７及び図８に従って説明する。
【００３１】
なお、第１実施形態と同一部材に付いては、同一符号を付してその説明を省略する。
【００３２】
図７に示される如く、本実施形態では、ロアアーム２０の後方側アーム２０Ａを取付けるフロントサスペンションメンバ１０における後方取付部１４のロアアーム取付部１４Ａが、車幅方向外側が開口された袋形状となっている。
【００３３】
図８に示される如く、ロアアーム取付部１４Ａの上壁部５０は、車両前後方向に傾斜部５０Ａ、５０Ｂを有する山形状となっており、車両後側の傾斜面５０Ｂは、ボデー取付部１４Ｂの上面５２に繋がっている。また、ロアアーム取付部１４Ａの下壁部５４は、車両後方に向かって延設され、ボデー取付部１４Ｂの下面５６に真っ直ぐ繋がっている。
【００３４】
また、ボデー取付部１４Ｂの上面５２は、ロアアーム２０の後方側アーム２０Ａにおける入力中心Ｐ３の高さの位置に設定されている。
【００３５】
ロアアーム取付部１４Ａの上壁部５０と下壁部５４との間には、ロアアーム２０の後方側アーム２０Ａが締結手段としてのボルト６０によってカラー６２を介して軸支されており、ボルト６０は、下壁部５４、カラー６２及び上壁部５０を下方から貫通しており、上壁部５０の上面に配設されたナット６４に螺合している。
【００３６】
次に、本実施形態の作用を説明する。
【００３７】
本実施形態では、第１実施形態に記載の作用効果に加えて以下の作用効果がある。
【００３８】
フロントサスペンションメンバ１０のロアアーム取付部１４Ａに、ロアアーム２０の後方側アーム２０Ａを組付ける際に、カラー６２を上壁部５０と下壁部５４との間に挟みボルト６０で締結する。この時、組付作業性及び各部品のばらつきを考慮して上壁部５０及び下壁部５４とカラー６２との間に隙間を設定すると、これらの隙間により締結時に発生する歪によって応力が発生する。しかしながら、本実施形態では、上壁部５０の車両前後方向に傾斜部５０Ａと傾斜部５０Ｂを設けたことにより、上壁部５０が組付け方向（図８の矢印Ｂ方向）に撓み易くなっている。この結果、前記隙間を設定する必要がないので、前記組付歪が無くなる。
【００３９】
また、本実施形態では、ロアアーム取付部１４Ａの上壁部５０が、車両後側の傾斜面５０Ｂによってボデー取付部１４Ｂの上面５２に繋がっており、ロアアーム取付部１４Ａの下壁部５４が、ボデー取付部１４Ｂの下面５６に真っ直ぐ繋がっている。この結果、ロアアーム２０の後方側アーム２０Ａの入力（図８の矢印Ｆ１）に対して、上壁部５０と下壁部５４との剛性差により、上壁部５０側の分担荷重Ｆ２に比べ、下壁部５４側の分担荷重Ｆ３を大きくできる。このため、例えば、ロアアーム取付部１４Ａの袋形状内に下壁部５４とボデー取付部１４Ｂとを繋ぐリブ６６を形成し、下壁部５４とボデー取付部１４Ｂとを補強することでロアアーム２０の後方側アーム２０Ａに対する入力強度を満足させることができる。
【００４０】
次に、本発明におけるサスペンションメンバの第３実施形態を図９〜図１３に従って説明する。
【００４１】
なお、第２実施形態と同一部材に付いては、同一符号を付してその説明を省略する。
【００４２】
図９に示される如く、本実施形態のフロントサスペンションメンバ１０のロアアーム取付部１４Ａにおける下壁部５４には、真空ダイキャストにて、ロアアーム取付部１４Ａを形成する型を横方向（図９の矢印Ｃ方向）へ抜く場合の機械加工代７０を考慮した所定幅Ｗ１の凸形状部７２が車幅方向に沿って形成されている。
【００４３】
図１０に示される如く、ロアアーム取付部１４Ａにおける上壁部５０も同様に、加工代７０を考慮した凸形状部７２が車幅方向に沿って形成されている。なお、型を抜く際の抜き勾配は角度θとなっており、ロアアームブッシュ取付面は間隔Ｔとなっている。
【００４４】
また、凸形状部７２における加工代７０を設けた機械加工部７２Ａの車幅方向内側部（奥側部）７２Ｂには、上方（図１０の矢印Ｄ方向）または下方（図１０の矢印Ｅ方向）に、上型と下型によりそれぞれ肉抜部７４が形成されており、図１１に示す機械加工部７２Ａの肉厚Ｍ１と、図１２に示す車幅方向内側部７２Ｂの肉厚Ｍ２とが均一に近づくようになっている。
【００４５】
次に、本実施形態の作用を説明する。
【００４６】
本実施形態では、フロントサスペンションメンバ１０のロアアーム取付部１４Ａにおける上壁部５０と下壁部５４とに加工代７０を考慮した所定幅Ｗ１の凸形状部７２が車幅方向に沿って形成されており、凸形状部７２における加工代７０を設けた機械加工部７２Ａの車幅方向内側部７２Ｂには、肉抜部７４が形成されている。この結果、補強のための厚肉部となる凸形状部７２を最小にできると共に、加工代７０となる加工範囲も最小にできる。更に、凸形状部７２の肉厚を均一にすることができる。このため、真空ダイキャストにおいて厚肉部に発生し易い鋳造欠陥を防止でき強度を向上できる。また、無駄肉が少なくなり重量を低減できる。
【００４７】
また、本実施形態では、図１３に示される如く、袋形状とされたロアアーム取付部１４Ａ内に小径のカッター８０を挿入し、カッター８０を同一面内、即ち2次元方向に移動することで、必要最小限とされた幅Ｗ１の機械加工部７２Ａを容易に加工できる。
【００４８】
従って、本実施形態では、フロントサスペンションメンバ１０の生産性を向上できると共に軽量化が可能になる。
【００４９】
また、本実施形態では、抜き型により、凸形状部７２の側面の７２Ｃ、７２Ｄをなだらかな傾斜面とすることで、この部位の断面変化が少なくなり応力が集中し難い構造にできる。
【００５０】
これに対して、図１４に示される比較例においては、厚肉部１４０にカッタ１４２を使用して所定の肉厚となる凹形状の機械加工部１４４を形成するため、所定の必要幅Ｗ１に対して加工幅Ｗ２が、本実施形態に比べて広くなる。また、図１４に矢印Ｋで示すように、カッター１４８による３次元での加工が必要となる。更に、応力集中を緩和するため、機械加工部１４４の側面１４４Ａ、１４４Ｂをなだらかな傾斜面とする場合には、カッター１４８を大径とする必要があり、カッター１４８を大径とすると、袋形状内に入り難いという不具合がある。
【００５１】
なお、本実施形態では、袋形状とされたロアアーム取付部１４Ａに凸形状部７２を形成したが、これに代えて、図１５に示される如く、矢印Ｙ１、Ｙ２、Ｙ３の３方向に抜く型を使用し、コ字状のロアアーム取付部１４Ａに凸形状部７２を形成した構成としても良い。また、図１６に示される如く、矢印Ｙ４、Ｙ５の２方向に抜く型のみで、ロアアーム取付部１４Ａに肉抜部を無くした凸形状部７２を形成した構成としても良い。
【００５２】
以上に於いては、本発明を特定の実施形態について詳細に説明したが、本発明はかかる実施形態に限定されるものではなく、本発明の範囲内にて他の種々の実施形態が可能であることは当業者にとって明らかである。
【００５３】
【発明の効果】
請求項１記載の本発明におけるサスペンションメンバは、後方取付部のロアアーム取付部が袋形状であり、該ロアアーム取付部がボデーに取付けられるボデー取付部と異なる位置に設定されていると共に、異なる位置に設定されている前方取付部のロアアーム取付部とボデー取付部とが縦壁部によって真っ直ぐに連結されているため、生産性を向上できると共に軽量化が可能であるという優れた効果を有する。さらに、ロアアームからの入力をボデーへ効率良く伝達できるという優れた効果を有する。
【００５４】
請求項２記載の本発明は、請求項１に記載のサスペンションメンバにおいて、前方取付部のロアアーム取付部に形成された貫通孔にブッシュが圧入されているため、生産性を向上できると共に軽量化が可能であるという優れた効果を有する。
【００５５】
請求項３記載の本発明は、請求項１、２の何れか１項に記載のサスペンションメンバにおいて、少なくとも後方取付部のロアアーム取付部が、他の部位よりも肉厚とされた凸形状部であり、該凸形状部は機械加工部であるため、生産性を向上できると共に軽量化が可能であるという優れた効果を有する。
【００５６】
請求項４記載の本発明は、請求項１、２の何れか１項に記載のサスペンションメンバにおいて、後方取付部のロアアーム取付部の上壁部が傾斜部を有し、ロアアーム取付部の下壁部がボデー取付部と真っ直ぐに繋がっているため、ロアアーム組付時に組付歪が無くなると共にロアアームからの入力に対する強度も向上できるという優れた効果を有する。
【図面の簡単な説明】
【図１】図２の１−１線に沿った断面図である。
【図２】本発明の第１実施形態に係るサスペンションメンバを示す車両下方から見た平面図である。
【図３】本発明の第１実施形態に係るサスペンションメンバを示す車両前方外側から見た分解斜視図である。
【図４】本発明の第１実施形態に係るサスペンションメンバを示す側断面図である。
【図５】比較例のサスペンションメンバを示す図４に対応する側断面図である。
【図６】本発明の第１実施形態の変形例に係るサスペンションメンバを示す車両前方外側から見た分解斜視図である。
【図７】本発明の第２実施形態に係るサスペンションメンバを示す車両前方外側から見た分解斜視図である。
【図８】本発明の第２実施形態に係るサスペンションメンバを示す側断面図である。
【図９】本発明の第３実施形態に係るサスペンションメンバを示す車両後方外側から見た斜視図である。
【図１０】図９の１０−１０線に沿った断面図である。
【図１１】図９の１１−１１線に沿った断面図である。
【図１２】図９の１２−１２線に沿った断面図である。
【図１３】本発明の第３実施形態に係るサスペンションメンバの加工を示す側断面図である。
【図１４】比較例に係るサスペンションメンバの加工を示す側断面図である。
【図１５】本発明の第３実施形態の変形例に係るサスペンションメンバを示す斜視図である。
【図１６】本発明の第３実施形態の他の変形例に係るサスペンションメンバを示す斜視図である。
【図１７】従来例のサスペンションメンバを示す分解斜視図である。
【符号の説明】
１０ フロントサスペンションメンバ
１２ フロントサスペンションメンバの前方取付部
１２Ａ ロアアーム取付部
１２Ｂ ボデー取付部
１２Ｃ 縦壁部
１４ フロントサスペンションメンバの後方取付部
１４Ａ ロアアーム取付部
１４Ｂ ボデー取付部
１６ フロントサイドメンバ（ボデー）
２０ ロアアーム
２０Ａ ロアアームの後方側アーム
２０Ｂ ロアアームの前方側アーム
３２ ブッシュ
５０ ロアアーム取付部の上壁部
５０Ａ 上壁部の傾斜部
５０Ｂ 上壁部の傾斜部
５４ ロアアーム取付部の下壁部
７０ 加工代
７２ 凸形状部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a suspension member, and more particularly to a suspension member to which a lower arm is attached and attached to a body.
[0002]
[Prior art]
Conventionally, as this type of suspension member, there is one shown in FIG.
[0003]
In this suspension member, the front arm 102A of the lower arm 102 is attached to the front attachment portion 100A of the front suspension member 100 by a bolt 104, and the rear side of the lower arm 102 is attached to the rear attachment portion 100B of the front suspension member 100. The arm 102B is attached by a bolt 106.
[0004]
[Problems to be solved by the invention]
However, in this suspension member, in order to ensure strength, fastening performance, and rigidity with respect to the input load of the lower arm 102, a separate brace 108 is disposed below the rear mounting portion 100B of the front suspension member 100. The rear mounting portion 100B is sandwiched between the brace 108 and the body. As a result, there is a problem that the number of parts increases. In order to improve this, it is conceivable to manufacture the entire front suspension member 100 including the brace 108 by casting. In this case, however, the number of parts that require finishing by machining is increased, and the productivity is lowered. At the same time, the thick part increases and the weight increase becomes a problem.
[0005]
An object of the present invention is to obtain a suspension member capable of improving productivity and reducing the weight in consideration of the above facts.
[0006]
[Means for Solving the Problems]
In the suspension member according to the first aspect of the present invention, the lower arm attachment portion of the rear attachment portion has a bag shape, and the lower arm attachment portion is set at a position different from the body attachment portion attached to the body, and at a different position. The lower arm attachment part and the body attachment part of the set front attachment part are connected straightly by the vertical wall part .
[0007]
Accordingly, the lower arm mounting portion of the rear mounting portion has a bag shape, and the lower arm mounting portion is set at a position different from the body mounting portion to be mounted on the body, so that machining is facilitated and productivity can be improved. Further, since the thick part can be minimized, the weight can be reduced. Furthermore, since the lower arm attachment portion and the body attachment portion of the front attachment portion are set at different positions and are straightly connected by the vertical wall portion, the input from the lower arm can be efficiently transmitted to the body.
[0008]
According to a second aspect of the present invention, in the suspension member according to the first aspect, a bush is press-fitted into a through hole formed in the lower arm mounting portion of the front mounting portion .
[0009]
Therefore, since the bush is press-fitted into the through-hole formed in the lower arm mounting portion of the front mounting portion, a bending allowance can be formed on the lower arm side where there is room in the space, and reinforcement by thick wall etc. on the lower arm side Can be performed. As a result, the thickness of the suspension member can be reduced, so that the productivity of the suspension member can be improved and the weight can be reduced.
[0010]
According to a third aspect of the present invention, in the suspension member according to any one of the first and second aspects, at least the lower arm mounting portion of the rear mounting portion is a convex shape portion that is thicker than other portions. And the convex part is a machined part.
[0011]
Accordingly, at least the lower arm attachment portion of the rear attachment portion of the suspension member is a convex shape portion that is thicker than other portions, and the convex shape portion is a machining portion, so that the machining portion is a concave shape. Compared with the case, even if the machining allowance is taken into account, the machining range becomes narrower and the machining becomes easier and the productivity can be improved. Further, since the thick part can be minimized, the weight can be reduced.
[0012]
According to a fourth aspect of the present invention, in the suspension member according to any one of the first and second aspects, the upper wall portion of the lower arm attachment portion of the rear attachment portion has an inclined portion, and the lower arm attachment portion The lower wall portion is directly connected to the body mounting portion.
[0013]
Therefore, when the lower arm is assembled, when the collar is sandwiched between the upper wall portion and the lower wall portion of the lower arm mounting portion of the rear mounting portion, the upper wall portion is easily attached in the assembling direction by the inclined portion of the upper wall portion. Bend. As a result, it is not necessary to set a gap between the upper wall portion or the lower wall portion and the collar, so that assembly distortion is eliminated. In addition, since the lower wall portion of the lower arm mounting portion of the rear mounting portion is straightly connected to the body mounting portion, the upper wall portion and the lower wall portion are affected by the difference in rigidity between the upper wall portion and the lower wall portion with respect to the input of the lower arm of the rear mounting portion. Compared with the shared load on the wall side, the shared load on the lower wall side can be increased. For this reason, the intensity | strength with respect to the input from a lower arm can also be improved by reinforcing between a lower wall part and a body attaching part.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
A suspension member according to a first embodiment of the present invention will be described with reference to FIGS.
[0015]
In the figure, the arrow FR indicates the vehicle front direction, the arrow IN indicates the vehicle width inside direction, and the arrow UP indicates the vehicle upward direction.
[0016]
As shown in FIG. 2, the front suspension member 10 of the present embodiment includes a front mounting portion 12 formed at both front end portions in the vehicle width direction and a rear mounting portion 14 formed at both rear end portions in the vehicle width direction. In, for example, it is attached to the left and right front side members 16 as a body directly or via an elastic mounting mechanism such as a rubber bush.
[0017]
As shown in FIG. 1, in the rear mounting portion 14 of the front suspension member 10, a lower arm mounting portion 14A for supporting a rear arm 20A of a double joint lower arm 20 composed of two I arms, and a lower arm mounting portion 14A. A body attachment portion 14B is integrally formed at a position different from the lower arm attachment portion 14A extending rearward.
[0018]
Between the lower arm mounting portion 14A of the front suspension member 10 and the front side member 16, a rear arm 20A of the lower arm 20 is pivotally supported via a collar 21 by a bolt 22 as a fastening means, and the lower arm mounting portion 14A. A bracket cover 22 that covers the rear arm 20A from above is disposed. The bolt 22 passes through the washer 23, the lower arm mounting portion 14A, the collar 21, the bracket cover 22 and the front side member 16 from below, and is screwed into a nut 24 disposed on the upper surface inside the cross section of the front side member 16. Match.
[0019]
On the other hand, the body mounting portion 14B of the front suspension member 10 is fixed to the front side member 16 with a bolt 26 as a fastening means with the bracket cover 22 interposed therebetween. The bolt 26 includes the body mounting portion 14B, the bracket cover 22 and the front cover member. The side member 16 is penetrated from below and is screwed into a nut 28 provided on the upper surface inside the cross section of the front side member 16.
[0020]
As shown in FIG. 3, in the front mounting portion 12 of the front suspension member 10, the lower arm mounting portion 12A for mounting the front arm 20B of the lower arm 20 and the lower arm mounting portion 12A at a different position from the lower arm mounting portion 12A. The body attachment portion 12B that is formed and attached to the front side member 16 has an integral structure.
[0021]
As shown in FIG. 4, a bush 32 is press-fitted into a through hole 30 formed in the lower arm attachment portion 12 </ b> A along the vehicle front-rear direction, and the front arm 20 </ b> B of the lower arm 20 is inserted through the bush 32. The bolt 34 and the nut 36 are attached. Therefore, the bending allowance T is set for the front arm 20B of the lower arm 20 which has no interference with the drive shaft 39 and the like and has a space in the vehicle longitudinal direction, and the lower arm 20 side is reinforced with a thick wall or the like. It is possible.
[0022]
Further, the lower arm attachment portion 12A and the body attachment portion 12B of the front attachment portion 12 of the front suspension member 10 are straightly connected by the vertical wall portion 12C. Reinforcing ribs 40 and 42 for connecting the lower arm attachment portion 12A and the body attachment portion 12B are formed.
[0023]
Next, the operation of this embodiment will be described.
[0024]
In the present embodiment, the rear arm 20A of the lower arm 20 is sandwiched between the front side member 16 and the lower arm mounting portion 14A of the front suspension member 10, and is fastened together with the bolts 22, and the front suspension member 10 is extended. Since the body attaching portion 14B is formed and the body attaching portion 14B is fixed to the front side member 16 by the bolt 26, the number of parts can be reduced and the cost can be reduced.
[0025]
Further, the slidable surface of the lower arm mounting portion is formed by two surfaces of the lower arm mounting portion 14A of the front suspension member 10; the contact surface S1 with the rear arm 20A of the lower arm 20 and the contact surface S2 with the washer 23. Decrease. As a result, the loss of the axial force of the mounting portion due to the sag can be reduced, and the set axial force can be lowered. For this reason, since a thin volt | bolt can be used for the volt | bolt 22, cost and weight can also be reduced.
[0026]
In the present embodiment, the bush 32 is press-fitted into the through hole 30 formed in the lower arm attachment portion 12A, and the front arm 20B of the lower arm 20 is attached to the lower arm attachment portion 12A via the bush 32. Since a bending allowance is set for the front arm 20B of the lower arm 20 having a sufficient space, no stress is generated due to assembly distortion on the lower arm mounting portion 12A side. As a result, it is not necessary to thicken and reinforce the lower arm mounting portion 12A in preparation for the stress generated by the assembly distortion, so that the productivity of the front suspension member 10 can be improved and the weight can be reduced. Further, the front suspension member 10 can be made compact.
[0027]
Further, since the lower arm attachment portion 12A and the body attachment portion 12B of the front attachment portion 12 of the front suspension member 10 are straightly connected by the vertical wall portion 12C, the input from the lower arm 20 is efficiently transmitted to the front side member 16. In addition, the strength and rigidity of the body mounting portion 12B can be secured by reinforcing the ribs 40 and 42. In addition, since the lower arm attachment portion 12A and the body attachment portion 12B of the front attachment portion 12 of the front suspension member 10 have an integrated structure, mechanical connection with another member can be eliminated, and the weight and cost can be reduced. .
[0028]
Also, a bush 32 is press-fitted into the through hole 30 formed in the lower arm attachment portion 12A, and the front arm 20B of the lower arm 20 is attached to the lower arm attachment portion 12A via this bush 32, and therefore, as shown in FIG. As shown in FIG. 5, the offset amount L1 between the center line M1 of the body mounting portion 12B and the center point P1 of the front arm 20B is different from the lower arm mounting portion 120A of the front suspension member 120 as in the prior art shown in FIG. When the lower arm mounting portion 124 is supported between the lower arm 122 and the center arm M2 of the body mounting portion 120B and the center point P2 of the lower arm mounting portion 124, the offset amount L2 can be reduced. As a result, in the present embodiment, the rigidity of the lower arm attachment portion 12A is increased.
[0029]
When the L arm is used as the lower arm, as shown in FIG. 6, the lower arm mounting portion 12A is twisted in the vehicle front-rear direction indicated by the arrow A in FIG. For this reason, by forming the rib 46 extending rearward of the vehicle on the rear side of the lower arm attachment portion 12A, the rigidity and strength against the twisting force can be improved.
[0030]
Next, a second embodiment of the suspension member according to the present invention will be described with reference to FIGS.
[0031]
In addition, about the same member as 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.
[0032]
As shown in FIG. 7, in this embodiment, the lower arm attachment portion 14 </ b> A of the rear attachment portion 14 of the front suspension member 10 to which the rear arm 20 </ b> A of the lower arm 20 is attached has a bag shape with the vehicle width direction outer side opened. Yes.
[0033]
As shown in FIG. 8, the upper wall portion 50 of the lower arm attachment portion 14A has a mountain shape having inclined portions 50A and 50B in the vehicle front-rear direction, and the inclined surface 50B on the rear side of the vehicle is formed on the body attachment portion 14B. It is connected to the upper surface 52. Further, the lower wall portion 54 of the lower arm attachment portion 14A extends toward the rear of the vehicle and is directly connected to the lower surface 56 of the body attachment portion 14B.
[0034]
Further, the upper surface 52 of the body mounting portion 14B is set to a position at the height of the input center P3 in the rear arm 20A of the lower arm 20.
[0035]
Between the upper wall portion 50 and the lower wall portion 54 of the lower arm attachment portion 14A, a rear arm 20A of the lower arm 20 is pivotally supported via a collar 62 by a bolt 60 as a fastening means. The lower wall portion 54, the collar 62 and the upper wall portion 50 are penetrated from below, and are screwed into a nut 64 disposed on the upper surface of the upper wall portion 50.
[0036]
Next, the operation of this embodiment will be described.
[0037]
In the present embodiment, in addition to the operational effects described in the first embodiment, the following operational effects are provided.
[0038]
When the rear arm 20A of the lower arm 20 is assembled to the lower arm mounting portion 14A of the front suspension member 10, the collar 62 is clamped between the upper wall portion 50 and the lower wall portion 54 with the bolts 60. At this time, if gaps are set between the upper wall part 50 and the lower wall part 54 and the collar 62 in consideration of the assembly workability and the variation of each part, stress is generated due to distortion generated at the time of fastening by these gaps. To do. However, in the present embodiment, by providing the inclined portion 50A and the inclined portion 50B in the vehicle front-rear direction of the upper wall portion 50, the upper wall portion 50 is easily bent in the assembling direction (the arrow B direction in FIG. 8). Yes. As a result, it is not necessary to set the gap, and the assembly distortion is eliminated.
[0039]
Further, in the present embodiment, the upper wall portion 50 of the lower arm attachment portion 14A is connected to the upper surface 52 of the body attachment portion 14B by the inclined surface 50B on the vehicle rear side, and the lower wall portion 54 of the lower arm attachment portion 14A is connected to the body. It is directly connected to the lower surface 56 of the mounting portion 14B. As a result, due to the difference in rigidity between the upper wall portion 50 and the lower wall portion 54 with respect to the input of the rear arm 20A of the lower arm 20 (arrow F1 in FIG. 8), compared to the shared load F2 on the upper wall portion 50 side, The shared load F3 on the lower wall portion 54 side can be increased. Therefore, for example, a rib 66 that connects the lower wall portion 54 and the body attachment portion 14B is formed in the bag shape of the lower arm attachment portion 14A, and the lower wall portion 54 and the body attachment portion 14B are reinforced to reinforce the lower arm 20. The input strength for the rear arm 20A can be satisfied.
[0040]
Next, a third embodiment of the suspension member according to the present invention will be described with reference to FIGS.
[0041]
In addition, about the same member as 2nd Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.
[0042]
As shown in FIG. 9, the lower wall portion 54 of the lower arm attachment portion 14A of the front suspension member 10 of the present embodiment has a die for forming the lower arm attachment portion 14A formed by vacuum die casting in the horizontal direction (arrow in FIG. 9). A convex portion 72 having a predetermined width W1 is formed along the vehicle width direction in consideration of the machining allowance 70 in the case of extraction in the (C direction).
[0043]
As shown in FIG. 10, the upper wall portion 50 of the lower arm attachment portion 14 </ b> A is similarly formed with a convex shape portion 72 in consideration of the machining allowance 70 along the vehicle width direction. The draft when the mold is pulled out is the angle θ, and the lower arm bush mounting surface is at the interval T.
[0044]
Further, an inner part (back side part) 72B in the vehicle width direction of the machining part 72A provided with the machining allowance 70 in the convex part 72 is above (in the direction of arrow D in FIG. 10) or below (in the direction of arrow E in FIG. 10). ) Are formed with an upper die and a lower die, respectively, and the thickness M1 of the machined portion 72A shown in FIG. 11 and the thickness M2 of the vehicle width direction inner side portion 72B shown in FIG. It comes to approach uniformly.
[0045]
Next, the operation of this embodiment will be described.
[0046]
In the present embodiment, the upper wall portion 50 and the lower wall portion 54 of the lower arm attachment portion 14A of the front suspension member 10 are formed with convex portions 72 having a predetermined width W1 in consideration of the machining allowance 70 along the vehicle width direction. In addition, a lightening portion 74 is formed in the vehicle width direction inner side portion 72B of the machining portion 72A provided with the machining allowance 70 in the convex portion 72. As a result, the convex portion 72 that becomes a thick portion for reinforcement can be minimized, and the machining range that becomes the machining allowance 70 can be minimized. Furthermore, the thickness of the convex portion 72 can be made uniform. For this reason, the casting defect which is easy to generate | occur | produce in a thick part in vacuum die-casting can be prevented, and intensity | strength can be improved. Moreover, waste meat can be reduced and the weight can be reduced.
[0047]
In the present embodiment, as shown in FIG. 13, by inserting a cutter 80 having a small diameter into the bag-shaped lower arm mounting portion 14A, and moving the cutter 80 in the same plane, that is, in a two-dimensional direction, The machined portion 72A having the minimum width W1 can be easily machined.
[0048]
Therefore, in this embodiment, the productivity of the front suspension member 10 can be improved and the weight can be reduced.
[0049]
Further, in the present embodiment, by making the side surfaces 72C and 72D of the convex portion 72 into gentle inclined surfaces by the punching die, a cross-sectional change of this portion is reduced, and a structure in which stress is difficult to concentrate can be achieved.
[0050]
On the other hand, in the comparative example shown in FIG. 14, since the concave-shaped machined portion 144 having a predetermined thickness is formed on the thick portion 140 using the cutter 142, the predetermined required width W1 is obtained. On the other hand, the processing width W2 is wider than that of the present embodiment. Further, as indicated by an arrow K in FIG. 14, three-dimensional processing by the cutter 148 is required. Furthermore, in order to relieve stress concentration, when the side surfaces 144A and 144B of the machined portion 144 are gently inclined surfaces, the cutter 148 needs to have a large diameter. If the cutter 148 has a large diameter, There is a problem that it is difficult to enter.
[0051]
In the present embodiment, the convex portion 72 is formed on the bag-shaped lower arm attachment portion 14A. Instead of this, as shown in FIG. 15, a mold that is pulled out in three directions indicated by arrows Y1, Y2, and Y3. It is good also as a structure which formed the convex-shaped part 72 in the U-shaped lower arm attaching part 14A. Further, as shown in FIG. 16, it is also possible to have a configuration in which the convex portion 72 is formed in the lower arm mounting portion 14A without the hollow portion only by a mold that is pulled out in two directions indicated by arrows Y4 and Y5.
[0052]
Although the present invention has been described in detail with respect to specific embodiments, the present invention is not limited to such embodiments, and various other embodiments are possible within the scope of the present invention. It will be apparent to those skilled in the art.
[0053]
【The invention's effect】
In the suspension member according to the first aspect of the present invention, the lower arm attachment portion of the rear attachment portion has a bag shape, and the lower arm attachment portion is set at a position different from the body attachment portion attached to the body, and at a different position. Since the lower arm attachment portion and the body attachment portion of the set front attachment portion are straightly connected by the vertical wall portion, it has an excellent effect that the productivity can be improved and the weight can be reduced. Furthermore, it has the outstanding effect that the input from a lower arm can be efficiently transmitted to a body .
[0054]
In the suspension member according to claim 1, since the bush is press-fitted into the through hole formed in the lower arm attachment portion of the front attachment portion, the productivity can be improved and the weight can be reduced. It has an excellent effect of being possible.
[0055]
According to a third aspect of the present invention, in the suspension member according to any one of the first and second aspects, at least the lower arm mounting portion of the rear mounting portion is a convex shape portion that is thicker than other portions. In addition, since the convex portion is a machined portion, it has an excellent effect that productivity can be improved and weight can be reduced .
[0056]
According to a fourth aspect of the present invention, in the suspension member according to any one of the first and second aspects, the upper wall portion of the lower arm mounting portion of the rear mounting portion has an inclined portion, and the lower wall of the lower arm mounting portion. Since the portion is connected straight to the body mounting portion, there is an excellent effect that the assembly distortion is eliminated when the lower arm is assembled and the strength against the input from the lower arm can be improved .
[Brief description of the drawings]
1 is a cross-sectional view taken along line 1-1 of FIG.
FIG. 2 is a plan view showing the suspension member according to the first embodiment of the present invention as viewed from below the vehicle.
FIG. 3 is an exploded perspective view showing the suspension member according to the first embodiment of the present invention as seen from the front outer side of the vehicle.
FIG. 4 is a side sectional view showing a suspension member according to the first embodiment of the present invention.
FIG. 5 is a side sectional view corresponding to FIG. 4 showing a suspension member of a comparative example.
FIG. 6 is an exploded perspective view showing a suspension member according to a modification of the first embodiment of the present invention as seen from the front front side of the vehicle.
FIG. 7 is an exploded perspective view showing a suspension member according to a second embodiment of the present invention as seen from the front outer side of the vehicle.
FIG. 8 is a side sectional view showing a suspension member according to a second embodiment of the present invention.
FIG. 9 is a perspective view of a suspension member according to a third embodiment of the present invention as seen from the rear rear side of the vehicle.
10 is a cross-sectional view taken along line 10-10 of FIG.
11 is a cross-sectional view taken along line 11-11 in FIG.
12 is a cross-sectional view taken along line 12-12 of FIG.
FIG. 13 is a side sectional view showing processing of a suspension member according to a third embodiment of the present invention.
FIG. 14 is a side sectional view showing processing of a suspension member according to a comparative example.
FIG. 15 is a perspective view showing a suspension member according to a modification of the third embodiment of the present invention.
FIG. 16 is a perspective view showing a suspension member according to another modification of the third embodiment of the present invention.
FIG. 17 is an exploded perspective view showing a conventional suspension member.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Front suspension member 12 Front suspension member front attachment part 12A Lower arm attachment part 12B Body attachment part 12C Vertical wall part 14 Front suspension member rear attachment part 14A Lower arm attachment part 14B Body attachment part 16 Front side member (body)
20 Lower arm 20A Lower arm rear side arm 20B Lower arm front arm 32 Bush 50 Upper wall attachment upper wall portion 50A Upper wall inclination portion 50B Upper wall inclination portion 54 Lower arm attachment lower wall portion 70 Processing allowance 72 Convex shape

Claims (4)

後方取付部のロアアーム取付部が袋形状であり、該ロアアーム取付部がボデーに取付けられるボデー取付部と異なる位置に設定されていると共に、異なる位置に設定されている前方取付部のロアアーム取付部とボデー取付部とが縦壁部によって真っ直ぐに連結されていることを特徴とするサスペンションメンバ。 The lower arm mounting portion of the rear mounting portion has a bag shape, the lower arm mounting portion is set at a position different from the body mounting portion to be mounted on the body, and the lower arm mounting portion of the front mounting portion set at a different position; A suspension member, characterized in that the body mounting portion is straightly connected by a vertical wall portion . 前記前方取付部のロアアーム取付部に形成された貫通孔にブッシュが圧入されていることを特徴とする請求項１に記載のサスペンションメンバ。 The suspension member according to claim 1, wherein a bush is press-fitted into a through hole formed in a lower arm attachment portion of the front attachment portion . 少なくとも後方取付部のロアアーム取付部が、他の部位よりも肉厚とされた凸形状部であり、該凸形状部は機械加工部であることを特徴とする請求項１、２の何れか１項に記載のサスペンションメンバ。 The lower arm mounting portion of at least the rear mounting portion is a convex portion that is thicker than other portions, and the convex portion is a machined portion. Suspension member according to item . 前記後方取付部のロアアーム取付部の上壁部が傾斜部を有し、前記ロアアーム取付部の下壁部がボデー取付部と真っ直ぐに繋がっていることを特徴とする請求項１、２の何れか１項に記載のサスペンションメンバ。 The upper wall portion of the lower arm attachment portion of the rear attachment portion has an inclined portion, and the lower wall portion of the lower arm attachment portion is straightly connected to the body attachment portion. The suspension member according to item 1 .
JP2001324964A 2001-10-23 2001-10-23 Suspension member Expired - Fee Related JP4025052B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2001324964A JP4025052B2 (en) 2001-10-23 2001-10-23 Suspension member

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Application Number Priority Date Filing Date Title
JP2001324964A JP4025052B2 (en) 2001-10-23 2001-10-23 Suspension member

Publications (2)

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JP2003127892A JP2003127892A (en) 2003-05-08
JP4025052B2 true JP4025052B2 (en) 2007-12-19

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4509533B2 (en) * 2003-11-05 2010-07-21 ダイハツ工業株式会社 Reinforcement structure of suspension member for vehicle
JP4780145B2 (en) * 2008-05-29 2011-09-28 トヨタ自動車株式会社 Manufacturing method of casting suspension member
JP5633686B2 (en) * 2010-10-13 2014-12-03 スズキ株式会社 Vehicle suspension arm mounting structure
JP5633685B2 (en) * 2010-10-13 2014-12-03 スズキ株式会社 Vehicle suspension arm mounting structure
JP2012136196A (en) * 2010-12-27 2012-07-19 Daihatsu Motor Co Ltd Lower arm attachment structure
JP6136482B2 (en) * 2013-04-04 2017-05-31 スズキ株式会社 Suspension arm mounting structure
JP6052121B2 (en) * 2013-09-20 2016-12-27 マツダ株式会社 Body front structure

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