JP3656398B2

JP3656398B2 - Suspension member mounting structure and mounting method

Info

Publication number: JP3656398B2
Application number: JP08733298A
Authority: JP
Inventors: 龍生深谷
Original assignee: Nissan Motor Co Ltd
Current assignee: Nissan Motor Co Ltd
Priority date: 1998-03-31
Filing date: 1998-03-31
Publication date: 2005-06-08
Anticipated expiration: 2018-03-31
Also published as: JPH11278298A

Description

【０００１】
【発明の属する技術分野】
本発明は、自動車のサスペンションメンバの取付構造及びその取付方法に関する。
【０００２】
【従来の技術】
図５はリヤサスペンション装置の概略を全体的に示す斜視図であり、図５において、サスペンションメンバ１にはディファレンシャル装置２が搭載され、このディファレンシャル装置２はエンジン側からの回転を左右の車輪回転体３に伝達する。上記サスペンションメンバ１の車幅方向の両外端部にはＡアーム４、フロントアッパーリンク５及びリヤアッパーリンク６の各一端が上下方向に回転自在に取付けられており、この各他端は左右の車輪支持部材７にそれぞれ支持されている。尚、図５において、８はスタビライザ、９はリヤクロスバー、１０はショックアブソーバーアッシー、１１はリヤショックアブソーバータワーバーである。
【０００３】
そして、このように構成されたリヤサスペンション装置はサスペンションメンバ１の適所で車体側に取付けられる等して固定される。
【０００４】
ところで、サスペンションメンバ１に対する車体側の高さは、例えば４輪駆動車両と２輪駆動車両とではパワートレインとの関係等で異なる高さに設定して車両姿勢に差を設ける必要があり、図６（ａ）には４輪駆動車両の場合の従来におけるサスペンションメンバの取付構造の断面図、図６（ｂ）には２輪駆動車両の場合の従来におけるサスペンションメンバの取付構造の断面図がそれぞれ示されている。
【０００５】
図６（ａ）及び図６（ｂ）において、サスペンションメンバ１にはインシュレータ１２が取付けられており、このインシュレータ１２はサスペンションメンバ１に固定される外筒部１３とこの外筒部１３の内側に配置される内筒部１４とこの外筒部１３及び内筒部１４の間で、且つ、これら双方に固定された緩衝部材としてのゴム部材１５とから構成されている。
【０００６】
このゴム部材１５は内筒部１４の上端にまで延設されてゴム嵌合部１５ａが構成されており、このゴム嵌合部１５ａにはワッシャ１６が嵌合している。車体１７の下方にはピン１８が突出して設けられており、このピン１８がワッシャ１６のピン挿入孔１６ａ及び内筒部１４に挿入されている。ピン１８の下端側にはネジ部１８ａが形成されており、このネジ部１８ａにワッシャ１９を介してナット２０が螺入されている。このナット２０の締結力によって車体１７側はインシュレータ１２の内筒部１４に固定されている。又、上方と下方のワッシャ１６、１９が外筒部１３の上下方向の変位規制部となっている。尚、フトントサスペンションのサスペンションメンバも同様に車体１７側に取付けられている。
【０００７】
また、図６（ａ）の４輪駆動車両の場合と図６（ｂ）の２輪駆動車両の場合とで異なるのは、インシュレータ１２の内筒部１４の高さ（長さ）であり、４輪駆動車両の場合の内筒部１４の高さ寸法Ｈ１が図６（ｂ）の２輪駆動車両の場合のそれの高さ寸法Ｈ２より長く設定されている。これによりサスペンションメンバ１に対する車体側の高さが４輪駆動車両と２輪駆動車両で異なる高さｈ１、ｈ２に設定され車両姿勢に差が設けられる。
【０００８】
上記サスペンションメンバ１を車体１７に取付けるには、図７に示すように、サスペンションメンバ１に予め取付けられているインシュレータ１２の上面側にワッシャ１６を被せ、ワッシャ１６をゴム嵌合部１５ａを利用して嵌合させる。次に、ライン上流から流れてきた車体１７に対してサスペンションメンバ１をリフトアップし、車体１７のピン１８をワッシャ１６のピン挿入孔１６ａ及びインシュレータ１２の内筒部１４に挿入する。そして、インシュレータ１２の内筒部１４の下方より突出したピン１８の下端にワッシャ１９を介してナット２０を螺入すれば完了する。
【０００９】
【発明が解決しようとする課題】
しかしながら、上記従来のサスペンションメンバ１の取付構造では、ワッシャ１６を仮止めするために振動減衰用のゴム部材１５を内筒部１４の上端にまで延長してゴム嵌合部１５ａを構成しているので、ゴム使用量が多くコスト高の原因になっていた。特に、４輪駆動車両の場合は内筒部１４の高さ（長さ）寸法Ｈ１が長いため、ゴム使用量が多くなり問題であった。
【００１０】
また、ワッシャ１６はサスペンションメンバ１に仮止めされるので、サスペンションメンバ１と車体１７との間で相対的位置ずれがあると、サスペンションメンバ１のリフトアップ過程で車体１７のピン１８が仮止めされたワッシャ１６に突き当ってワッシャ１６が脱落するおそれがあった。又、ワッシャ１６はサスペンションメンバ１に仮止めされるため、車両生産ラインにおけるワッシャ仮止め時点が限定されてしまい、ラインの工程設計に自由度がないという不都合があった。
【００１１】
さらに、インシュレータ１２の内筒部１４の高さ（長さ）を異ならせてサスペンションメンバ１に対する上記車体１７側の高さを４輪駆動車両と２輪駆動車両で異なる高さに設定しているため、４輪駆動車両と２輪駆動車両で異なるインシュレータ１２を使用しなければならなかった。
【００１２】
そこで、本発明は、ワッシャの仮止めに必要な部材使用量が少なくて済み、且つ、仮止めされたワッシャが脱落するおそれがほとんどないと共にワッシャ仮止め時点が限定されず、車両生産ラインの工程設計に自由度が広がるサスペンションメンバの取付構造及びその取付方法の提供を課題とする。また、ワッシャの仮止めに必要な部材使用量が少なくて済み、且つ、仮止めされたワッシャが脱落するおそれがほとんどないと共にサスペンションメンバに対する車体側の高さを複数の異なる高さに設定して車両姿勢に差を設ける場合にあっても同じインシュレータが共有できるサスペンションメンバの取付構造及びその取付方法の提供を課題とする。
【００１３】
【課題を解決するための手段】
請求項１の発明は、サスペンションメンバにインシュレータを取り付け、このインシュレータを上記サスペンションメンバに固定される外筒部とこの外筒部の内側に配置される内筒部とこの外筒部及び内筒部の間で、且つ、これら双方に固定された緩衝部材とから構成し、上記内筒部内に車体側のピンを挿入し、このピンを上記内筒部に固定することによってサスペンションメンバを上記車体に取付けるサスペンションメンバの取付構造において、上記車体と内筒部との間に上記ピンに挿入されたワッシャを介在し、このワッシャのピン挿入孔の内面に、挿入される上記ピンにより圧縮変形して上記ピンの挿入を許容してサスペンションメンバを取り付ける前に車体側のピンにワッシャを嵌合させて当該ワッシャ単品で仮止めできるようにする弾性圧着部を設けたことを特徴とする。
【００１４】
従って、弾性圧着部はワッシャのピン挿入孔の内面に設けるため、インシュレータの内筒部の外周側に付加すべきスペースに比べてはるかに小さく、又、ワッシャを車体のピンに挿入した状態で仮止めするため、サスペンションメンバと車体との間で相対的位置ずれがあってもサスペンションメンバのリフトアップ過程で車体のピンに仮止めされたワッシャに部材が突き当ることがなく、何等かの理由により部材がワッシャに突き当たってもワッシャが弾性圧着部の圧縮変形による復帰力でピンに挿入した状態で仮止めされているため容易に外れず、さらに、ワッシャ単品で車体のピンに仮止めできるため、仮止め時点は車両生産ラインのピン固定工程の上流であればよい。
【００１５】
請求項２の発明は、請求項１記載のサスペンションメンバの取付構造であって、上記サスペンションメンバに対する上記車体側の高さを複数の異なる高さに設定して車両姿勢に差を設ける場合にあって、上記インシュレータの内筒部の高さを最も低い車両姿勢に必要な高さ未満で一定に設定し、上記ワッシャには上記内筒部の上面に当接し、且つ、各車両姿勢の高さに応じてこの高さを補うための補助足部を設けたことを特徴とする。
【００１６】
従って、請求項１の発明の作用に加え、サスペンションメンバに対する上記車体側の高さを複数の異なる高さに設定する場合にもインシュレータの内筒部の高さが一定である。
【００１７】
請求項３の発明は、請求項１記載のサスペンションメンバの取付構造であって、上記サスペンションメンバに対する上記車体側の高さを複数の異なる高さに設定して車両姿勢に差を設ける場合にあって、上記インシュレータの内筒部の高さを最も低い車両姿勢に必要な高さに設定し、最も低い車両姿勢のものを除いて上記ワッシャには上記内筒部の上面に当接し、且つ、各車両姿勢の高さに応じてこの高さを補うための補助足部を設けたことを特徴とする。
【００１８】
従って、請求項１の発明の作用に加え、サスペンションメンバに対する上記車体側の高さを複数の異なる高さに設定する場合にもインシュレータの内筒部の高さが一定であり、又、その高さが最も低い車両姿勢に必要な高さに設定されているため、最も低い車両姿勢の車両に対しては車体とインシュレータとの間にワッシャを介在する必要がない。
【００１９】
請求項４の発明は、請求項１記載のサスペンションメンバの取付構造であって、上記サスペンションメンバに対する上記車体側の高さを４輪駆動車両と２輪駆動車両で異なる高さに設定して車両姿勢に差を設ける場合であって、上記インシュレータの内筒部の高さを２輪駆動車両の姿勢に必要な高さに設定し、上記ワッシャには上記内筒部の上面に当接し、且つ、４輪駆動車両の姿勢に必要な高さを補うための補助足部を設けたことを特徴とする。
【００２０】
従って、請求項１の発明の作用に加え、サスペンションメンバに対する上記車体側の高さを４輪駆動車両と２輪駆動車両で異なる高さに設定する場合にもインシュレータの内筒部の高さが一定であり、又、その高さが２輪駆動車両の姿勢に必要な高さに設定されているため、２輪駆動車両に対しては車体とインシュレータとの間にワッシャを介在する必要がない。
【００２１】
請求項５の発明は、請求項１〜４のいずれかに記載のサスペンションメンバの取付構造であって、上記弾性圧着部は、上記ワッシャのピン挿入孔の一部内周状にのみ設けたことを特徴とする。
【００２２】
従って、請求項１〜４の発明の作用に加え、弾性圧着部の配置スペースが非常に狭くなる。
【００２３】
請求項６の発明は、請求項１〜５のいずれかに記載のサスペンションメンバの取付構造であって、上記弾性圧着部は、ゴム材にて構成したことを特徴とする。
【００２４】
従って、請求項１〜５の発明の作用に加え、一般にゴム材は摩擦係数が大きいためワッシャの抜け方向の外力に対して大きな抵抗となる。
【００２５】
請求項７の発明は、サスペンションメンバにインシュレータを取り付け、このインシュレータを上記サスペンションメンバに固定される外筒部とこの外筒部の内側に配置される内筒部とこの外筒部及び内筒部の間で、且つ、これら双方に固定された緩衝部材とから構成し、また、ワッシャのピン挿入孔の内面に圧縮変形可能な弾性圧着部を設け、上記ワッシャのピン挿入孔に車体側のピンを挿入し、このピンにより上記弾性圧着部が弾性変形してピンの挿入を許容し、且つ、上記ピンに上記ワッシャを嵌合して当該ワッシャ単品で仮止めするワッシャ仮止め工程を行い、ワッシャを仮止めした上記ピンを上記インシュレータの内筒部に挿入し、上記ピンを上記内筒部に固定するピン固定工程を行うことを特徴とする。
【００２６】
従って、ワッシャ仮止め工程とピン固定工程によってサスペンションメンバが車体に取付けられ、弾性圧着部はワッシャのピン挿入孔の内面に設けるため、インシュレータの内筒部の外周側に付加すべきスペースに比べてはるかに小さく、又、ワッシャを車体のピンに挿入した状態で仮止めするため、サスペンションメンバと車体との間で相対的位置ずれがあってもサスペンションメンバのリフトアップ過程で車体のピンに仮止めされたワッシャに任意の部材が突き当ることがなく、何等かの理由により部材がワッシャに突き当たってもワッシャが弾性圧着部の圧縮変形による復帰力でピンに挿入した状態で仮止めされているため容易に外れず、さらに、ワッシャ単品で車体のピンに仮止めできるため、車両生産ラインのピン固定工程の上流であればよくワッシャ仮止め時点が限定されない。
【００２７】
請求項８の発明は、サスペンションメンバに対する車体側の高さを４輪駆動車両と２輪駆動車両で異なる高さに設定して車両姿勢に差を設ける場合であって、上記サスペンションメンバにインシュレータを取り付け、このインシュレータを上記サスペンションメンバに固定される外筒部とこの外筒部の内側に配置される内筒部とこの外筒部及び内筒部の間で、且つ、これら双方に固定された緩衝部材とから構成すると共に、上記内筒部の高さを２輪駆動車両の姿勢に必要な高さに設定し、また、ワッシャには上記内筒部の上面に当接し、且つ、４輪駆動車両の姿勢に必要な高さを補うための補助足部を設けると共にピン挿入孔の内面に圧縮変形可能な弾性圧着部を設け、
４輪駆動車両の場合には、上記ワッシャのピン挿入孔に車体側のピンを挿入し、このピンにより上記弾性圧着部が弾性変形してピンの挿入を許容し、且つ、上記ピンに上記ワッシャを嵌合するワッシャ仮止め工程を行い、ワッシャを仮止めした上記ピンを上記インシュレータの内筒部に挿入し、上記車体と内筒部との間に上記ワッシャを介在した状態で上記ピンを上記内筒部に固定するピン固定工程を行い、
２輪駆動車両の場合には、ワッシャ仮止め工程を行わずに上記車体側のピンを上記インシュレータの内筒部に挿入し、上記車体と内筒部との間に上記ワッシャを介在しない状態で上記ピンを上記内筒部に固定するピン固定工程を行うことを特徴とする。
【００２８】
従って、４輪駆動車両の場合には、ワッシャ仮止め工程とピン固定工程によってサスペンションメンバが車体に取付けられ、上記請求項７の発明と同様の作用を有し、又、２輪駆動車両の場合には、ワッシャ仮止め工程を行わずにピン固定工程のみによってサスペンションメンバが車体に取付けられ、そのうえ、４輪駆動車両と２輪駆動車両のいずれの場合にもインシュレータの内筒部の高さが一定のものを使用できる。
【００２９】
【発明の効果】
請求項１の発明では、弾性圧着部はワッシャのピン挿入孔の内面に設けるため、インシュレータの内筒部の外周側に付加すべきスペースに比べてはるかに小さく、ワッシャの仮止めに必要な部材使用量が少なくて済み、又、ワッシャを車体のピンに挿入した状態で仮止めするため、サスペンションメンバと車体との間で相対的位置ずれがあってもサスペンションメンバのリフトアップ過程で車体のピンに仮止めされたワッシャに部材が突き当ることがなく、何等かの理由により部材がワッシャに突き当たってもワッシャが弾性圧着部の圧縮変形による復帰力でピンに挿入した状態で仮止めされているため容易に外れず、仮止めされたワッシャが脱落するおそれがほとんどなく、さらに、ワッシャ単品で車体のピンに仮止めできるため、仮止め時点は車両生産ラインのピン固定工程の上流であればよくワッシャ仮止め時点が限定されず、車両生産ラインの工程設計に自由度が広がる。
【００３０】
請求項２の発明では、請求項１の発明の効果に加え、サスペンションメンバに対する上記車体側の高さを複数の異なる高さに設定する場合にもインシュレータの内筒部の高さが一定であるため、インシュレータを共有できる。
【００３１】
請求項３の発明では、請求項１の発明の効果に加え、サスペンションメンバに対する上記車体側の高さを複数の異なる高さに設定する場合にもインシュレータの内筒部の高さが一定であるため、インシュレータを共有でき、又、その内筒部の高さが最も低い車両姿勢に必要な高さに設定されているため、最も低い車両姿勢の車両に対しては車体とインシュレータとの間にワッシャを介在する必要がなく部品点数の軽減、取付け工程の削減、コスト安等に供する。
【００３２】
請求項４の発明では、請求項１の発明の効果に加え、サスペンションメンバに対する上記車体側の高さを４輪駆動車両と２輪駆動車両で異なる高さに設定する場合にもインシュレータの内筒部の高さが一定であるため、インシュレータを共有でき、又、その高さが２輪駆動車両の姿勢に必要な高さに設定されているため、２輪駆動車両に対しては車体とインシュレータとの間にワッシャを介在する必要がなく部品点数の軽減、取付け工程の削減、コスト安等に供する。
【００３３】
請求項５の発明では、請求項１〜４の発明の効果に加え、弾性圧着部の配置スペースが非常に狭くなるため、さらにワッシャの仮止めに必要な部材使用量が少なくて済み。
【００３４】
請求項６の発明では、請求項１〜５の発明の効果に加え、一般にゴム材は摩擦係数が大きいためワッシャの抜け方向の外力に対して大きな抵抗となるため、さらに仮止めされたワッシャが脱落するおそれがなくなる。
【００３５】
請求項７の発明では、ワッシャ仮止め工程とピン固定工程によってサスペンションメンバが車体に取付けられ、弾性圧着部はワッシャのピン挿入孔の内面に設けるため、インシュレータの内筒部の外周側に付加すべきスペースに比べてはるかに小さく、ワッシャの仮止めに必要な部材使用量が少なくて済み、又、ワッシャを車体のピンに挿入した状態で仮止めするため、サスペンションメンバと車体との間で相対的位置ずれがあってもサスペンションメンバのリフトアップ過程で車体のピンに仮止めされたワッシャに部材が突き当ることがなく、何等かの理由により部材がワッシャに突き当たってもワッシャが弾性圧着部の圧縮変形による復帰力でピンに挿入した状態で仮止めされているため容易に外れず、仮止めされたワッシャが脱落するおそれがほとんどなく、さらに、ワッシャ単品で車体のピンに仮止めできるため、車両生産ラインのピン固定工程の上流であればよくワッシャ仮止め時点が限定されず、車両生産ラインの工程設計に自由度が広がる。
【００３６】
請求項８の発明では、４輪駆動車両の場合には、ワッシャ仮止め工程とピン固定工程によってサスペンションメンバが車体に取付けられ、上記請求項７の発明と同様の効果を有し、又、２輪駆動車両の場合には、ワッシャ仮止め工程を行わずにピン固定工程のみによってサスペンションメンバが車体に取付けられ、そのうえ、４輪駆動車両と２輪駆動車両のいずれの場合にもインシュレータの内筒部の高さが一定のものを使用できるため、インシュレータを共有でき、又、その内筒部の高さが２輪駆動車両の姿勢に必要な高さに設定されているため、２輪駆動車両に対しては車体とインシュレータとの間にワッシャを介在する必要がなく部品点数の軽減、取付け工程の削減、コスト安等に供する。
【００３７】
【発明の実施の形態】
以下、本発明の一実施形態を図面に基づいて説明する。
【００３８】
この実施形態では、サスペンションメンバ１に対する車体側の高さが４輪駆動車両と２輪駆動車両とで異なる高さに設定して車両姿勢に差を設ける場合を示し、図１（ａ）は４輪駆動車両の場合のサスペンションメンバの取付構造の断面図、図１（ｂ）は２輪駆動車両の場合のサスペンションメンバの取付構造の断面図、図２（ａ）はワッシャ３４の平面図、図２（ｂ）は（ａ）のＡ−Ａ線断面図、図２（ｃ）は（ｂ）の要部拡大断面図をそれぞれ示す。
【００３９】
図１及び図２において、サスペンションメンバ１にはインシュレータ３０が取付けられており、このインシュレータ３０はサスペンションメンバ１に固定される外筒部３１とこの外筒部３１の内側に配置される内筒部３２とこの外筒部３１及び内筒部３２の間で、且つ、これら双方に固定された緩衝部材としてのゴム部材３３とから構成されている。内筒部３２の高さ（長さ）は２輪駆動車両の姿勢に必要な高さＨに設定されている。尚、ゴム部材３３は従来例と異なり、内筒部３２の上端にまで延設されていない。
【００４０】
ここで、図１（ａ）の４輪駆動車両の場合には、内筒部３２の上面にワッシャ３４が配置され、さらにこのワッシャ３４の上面に車体１７が配置されている。車体１７の下方にはピン１８が突出して設けられており、このピン１８がワッシャ３４のピン挿入孔３４ｃ及び内筒部３２に挿入されている。一方、図１（ｂ）の２輪駆動車両の場合には、内筒部３２の上面にワッシャ３４が配置されずに直接車体１７が配置されている。車体１７の下方にはピン１８が突出して設けられており、このピン１８が内筒部３２に挿入されている。
【００４１】
そして、図１（ａ）の４輪駆動車両の場合と図１（ｂ）の２輪駆動車両の場合共に、ピン１８の下端側にはネジ部１８ａが形成されており、このネジ部１８ａにワッシャ１９を介してナット２０が螺入されている。このナット２０の締結力によって車体１７側はインシュレータ３０の内筒部３２に固定されている。即ち、図１（ａ）の４輪駆動車両の場合と図１（ｂ）の２輪駆動車両の場合とで異なるのは、ワッシャ３４の有無のみである。又、４輪駆動車両の場合には上方と下方のワッシャ３４、１９が外筒部３１の上下方向の変位規制部となっており、２輪駆動車両の場合には車体１７の下面が外筒部３１の上方の変位規制部に、下方のワッシャ１９が外筒部３１の下方の変位規制部となっている。
【００４２】
上記ワッシャ３４は、図２に詳しく示すように、ワッシャ本体３４ａの下面に補助足部３４ｂが溶接等により接着されており、ワッシャ本体３４ａと補助足部３４ｂの中心にはピン挿入孔３４ｃが形成されている。ワッシャ本体３４ａの外周端部は補助足部３４ｂの下面と同一高さ位置に設定され、外筒部３１の上方変異規制部となっている。補助足部３４ｂは円筒状で、上記インシュレータ３０の内筒部３２と略同一の内径及び外径に設定されており、取付け状態において補助足部３４ｂの下面がインシュレータ３０の内筒部３２の上面にほぼ一致して当接される。
【００４３】
又、補助足部３４ｂの高さ（長さ）は４輪駆動車両の場合の姿勢に必要な高さを補うための高さに設定されている。正確には補助足部３４ｂの高さ（長さ）をｈ５とし、ワッシャ本体３４ａの肉厚をｄとし、４輪駆動車両におけるサスペンションメンバ１に対する車体１７側の高さをｈ３（図１（ａ）参照）とし、２輪駆動車両におけるそれをｈ４（図１（ｂ）参照）とすると、ワッシャ３４の高さ（ｈ５＋ｄ）が４輪駆動車両と２輪駆動車両とのサスペンションメンバ１に対する車体側の高さの差（ｈ３−ｈ４）になるよう設定する。
【００４４】
更に、上記ピン挿入孔３４ｃの内面で、且つ、その一部円周状には弾性圧着部３４ｄが突出して設けられており、この弾性圧着部３４ｄはゴム材にて構成されている。ピン挿入孔３４ｃ自体の内径はピン１８より大きく、弾性圧着部３４ｄの内径はピン１８より小さく設定されており、弾性圧着部３４ｄが挿入される上記ピン１８により圧縮変形して上記ピン１８の挿入を許容するよう構成されている。
【００４５】
上記サスペンションメンバ１を車体１７に取付けるには、図３に示すように、４輪駆動車両の場合には、最初にワッシャ３４のピン挿入孔３４ｃに車体１７側のピン１８を挿入する。すると、このピン１８により弾性圧着部３４ｄが圧縮変形してピン１８の挿入が許容され、挿入されたワッシャ３４は弾性圧着部３４ｄの弾性変形復帰力によりピン１８に嵌合する（ワッシャ仮止め工程）。
【００４６】
次に、ライン上流から流れてきた車体１７に対してサスペンションメンバ１をリフトアップし、車体１７のピン１８がインシュレータ３０の内筒部３２に挿入される。すると、仮止めされていたワッシャ３４の補助足部３４ｂが内筒部３２の上面に乗った状態でワッシャ３４が車体１７とインシュレータ３０との間に配置される。そして、インシュレータ３０の内筒部３２の下方より突出したピン１８の下端にワッシャ１９を介してナット２０を螺入すれば完了する（ピン固定工程）。
【００４７】
２輪駆動車両の場合には、上記ワッシャ仮止め工程を行わずにライン上流から流れてきた車体１７に対してサスペンションメンバ１をリフトアップし、車体１７のピン１８がインシュレータ３０の内筒部３２に挿入される。すると、車体１７の下面に直接にインシュレータ３０の内筒部３２の上面が当接される。そして、インシュレータ３０の内筒部３２の下方より突出したピン１８の下端にワッシャ１９を介してナット２０を螺入すれば完了する（ピン固定工程）。
【００４８】
サスペンションメンバ１の取付工程において、４輪駆動車両の場合には、ワッシャ３４を車体１７のピン１８に挿入した状態で仮止めするため、サスペンションメンバ１と車体１７との間で相対的位置ずれがあってもサスペンションメンバ１のリフトアップ過程で車体１７のピン１８に仮止めされたワッシャ３４に任意の部材が突き当ることがなく、又、何等かの理由により部材がワッシャ３４に突き当たってもワッシャ３４が弾性圧着部３４ｄの圧縮変形による復帰力等でピン１８に挿入した状態で仮止めされているため容易に外れず、仮止めされたワッシャ３４が脱落するおそれがほとんどない。特に、この実施形態では、弾性圧着部３４ｄがゴム材にて構成され、一般にゴム材は摩擦係数が大きいためワッシャ３４の抜け方向の外力に対して大きな抵抗となるため、さらに仮止めされたワッシャ３４が脱落するおそれがなくなる。
【００４９】
さらに、４輪駆動車両の場合には、ワッシャ３４単品で車体１７のピン１８に仮止めできるため、車両生産ラインのピン固定工程の上流であればワッシャ仮止め時点が限定されず、車両生産ラインの工程設計に自由度が広がる。
【００５０】
また、２輪駆動車両の場合には、ワッシャ仮止め工程を行わずにピン固定工程のみによってサスペンションメンバが車体に取付けられるので、ワッシャ３４が脱落することもなく取付け工程の簡略化に供する。
【００５１】
このように取付けられたサスペンションメンバ１の取付構造によれば、弾性圧着部３４ｄはワッシャ３４のピン挿入孔３４ｃの内面に設けるので、従来の如くインシュレータ３０の内筒部の外周側に付加すべきスペースに比べてはるかに小さいため、ワッシャ３４の仮止めに必要な部材使用量が少なくて済む。特に、この実施形態では、ピン挿入孔３４ｃの内面の一部円周状にのみ弾性圧着部３４ｄを設けているので、弾性圧着部３４ｄの配置スペースが非常に狭くなるため、さらに仮止めに必要な部材使用量が少なくて済む。
【００５２】
４輪駆動車両と２輪駆動車両のいずれの場合にもインシュレータ３０の内筒部３２の高さが一定のものを使用できるため、インシュレータ３０を共有できる。又、インシュレータ３０の内筒部３２の高さが２輪駆動車両の姿勢に必要な高さに設定されているため、２輪駆動車両に対しては車体１７とインシュレータ３０との間にワッシャ３４を介在する必要がなく部品点数の軽減、コスト安等に供する。
【００５３】
図４（ａ）はワッシャ３５の変形例の断面図、図４（ｂ）は変形例のワッシャ３５を用いた４輪駆動車両におけるサスペンションメンバの取付構造の断面図を示す。図４（ａ）、（ｂ）において、ワッシャ３５は円盤部３５ａとこの上面に設けられた補助足部３５ｂとから一体的に構成されており、円盤部３５ａと補助足部３５ｂに形成されたピン挿入孔３５ｃに弾性圧着部３５ｄが突出して設けられている。変形例のワッシャ３５は円盤部３５ａがインシュレータ３０の内筒部３２に当接すると共に外筒部３１の上方変位規制部となるため、上記実施形態のワッシャ３４に比べてシンプルな形状になる。図４（ｂ）において、上記実施形態と同一構成部分は図面に同一符号を付してその説明を省略する。そして、この変形例のワッシャ３５を用いた場合においても上記実施形態と略同様の作用及び効果がある。
【００５４】
以上実施形態のサスペンションメンバの取付構造によれば、インシュレータ３０の内筒部３２の高さを最も低い車両（２輪駆動車両）姿勢に必要な高さに設定し、最も低い車両姿勢のものを除いた車両（４輪駆動車両）に対しワッシャ３４には上記内筒部３２の上面に当接し、且つ、各車両姿勢の高さに応じてこの高さを補うための補助足部３４ｂを設けたが、インシュレータ３０の内筒部３２の高さを各車両（２輪駆動車両及び４輪駆動車両）姿勢に必要な高さに設定し、ワッシャ３４には弾性圧着部３４ｄのみで補助足部３４ｂを設けない構成としても良い。但し、この場合には全ての種類の車両でワッシャ３４を共有できるが、インシュレータ３０の共有はできない。
【００５５】
以上実施形態のサスペンションメンバの取付構造によれば、インシュレータ３０の内筒部３２の高さを最も低い（２輪駆動車両）姿勢に必要な高さに設定し、最も低い車両姿勢のものを除いた車両（４輪駆動車両）に対しワッシャ３４には上記内筒部３２の上面に当接し、且つ、各車両姿勢の高さに応じてこの高さを補うための補助足部３４ｂを設けたが、インシュレータ３０の内筒部３２の高さを最も低い車両姿勢（２輪駆動車両）に必要な高さ未満で一定に設定し、上記ワッシャ３４には上記内筒部３２の上面に当接し、且つ、、各車両（４輪駆動車両及び２輪駆動車両）姿勢の高さに応じてこの高さを補うための補助足部３４ｂを設けても良い。但し、この場合には、インシュレータ３０の共有化はできるが、全ての種類の車両でワッシャ３４が必要になる。
【００５６】
以上実施形態のサスペンションメンバの取付構造によれば、サスペンションメンバ１に対する車体１７側の高さを複数の異なる高さに設定して車両姿勢に差を設ける場合として４輪駆動車両と２輪駆動車両の２段階の場合を示したが、３段階あるいは４段階以上の場合にも同様に本発明を適用できる。
【００５７】
尚、前記実施形態によれば、弾性圧着部３４ｄは、上記ワッシャ３４のピン挿入孔３４ｃの一部内周状にのみ設けたが、ピン挿入孔３４ｃの全域に設けても良い。
【００５８】
尚、前記実施形態によれば、弾性圧着部３４ｄは、ゴム材にて構成したが、樹脂、テフロン等で一部内周状に又は全域に例えばコ−テイングにより構成しても良い。
【図面の簡単な説明】
【図１】（ａ）は本発明の一実施形態に係る４輪駆動車両の場合のサスペンションメンバの取付構造の断面図、（ｂ）は本発明の一実施形態に係る２輪駆動車両の場合のサスペンションメンバの取付構造の断面図である。
【図２】（ａ）は本発明の一実施形態に係るワッシャの平面図、（ｂ）は（ａ）のＡ−Ａ線断面図、（ｃ）は（ｂ）の要部拡大断面図である。
【図３】本発明の一実施形態に係る４輪駆動車両の場合のサスペンションメンバの取付工程を説明する斜視図である。
【図４】（ａ）はワッシャの変形例の断面図、（ｂ）は変形例のワッシャを用いた４輪駆動車両の場合のサスペンションメンバの取付構造の断面図である。
【図５】リヤサスペンション装置の概略を全体的に示す斜視図である。
【図６】（ａ）は従来例に係る４輪駆動車両の場合のサスペンションメンバの取付構造の断面図、（ｂ）は従来例に係る２輪駆動車両の場合のサスペンションメンバの取付構造の断面図である。
【図７】従来例に係る４輪駆動車両の場合のサスペンションメンバの取付工程を説明する斜視図である。
【符号の説明】
１サスペンションメンバ
１７車体
１８ピン
３０インシュレータ
３１外筒部
３２内筒部
３３ゴム部材（緩衝部材）
３４、３５ワッシャ
３４ｂ、３５ｂ補助足部
３４ｃ、３５ｃピン挿入孔
３４ｄ、３５ｄ弾性圧着部[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mounting structure and a mounting method for a suspension member of an automobile.
[0002]
[Prior art]
FIG. 5 is a perspective view showing an overall outline of the rear suspension device. In FIG. 5, the suspension member 1 is equipped with a differential device 2, which rotates from the engine side to the left and right wheel rotating bodies. 3 is transmitted. One end of each of the A arm 4, the front upper link 5 and the rear upper link 6 is attached to both outer ends of the suspension member 1 in the vehicle width direction so as to be rotatable in the vertical direction. Each is supported by a wheel support member 7. In FIG. 5, 8 is a stabilizer, 9 is a rear cross bar, 10 is a shock absorber assembly, and 11 is a rear shock absorber tower bar.
[0003]
The rear suspension device configured in this manner is fixed by being attached to the vehicle body side at an appropriate position of the suspension member 1.
[0004]
By the way, the height of the vehicle body side with respect to the suspension member 1 needs to be set to a different height, for example, in relation to the power train between the four-wheel drive vehicle and the two-wheel drive vehicle, so that a difference in vehicle posture is required. 6A is a sectional view of a conventional suspension member mounting structure in the case of a four-wheel drive vehicle, and FIG. 6B is a sectional view of a conventional suspension member mounting structure in the case of a two-wheel drive vehicle. It is shown.
[0005]
In FIG. 6A and FIG. 6B, an insulator 12 is attached to the suspension member 1, and the insulator 12 is fixed to the suspension member 1 and inside the outer cylinder portion 13. A rubber member 15 serving as a buffer member fixed between the inner cylinder portion 14 to be arranged and the outer cylinder portion 13 and the inner cylinder portion 14 and to both of them is constituted.
[0006]
The rubber member 15 extends to the upper end of the inner cylinder portion 14 to form a rubber fitting portion 15a, and a washer 16 is fitted to the rubber fitting portion 15a. A pin 18 protrudes below the vehicle body 17, and this pin 18 is inserted into the pin insertion hole 16 a and the inner cylinder portion 14 of the washer 16. A screw portion 18 a is formed on the lower end side of the pin 18, and a nut 20 is screwed into the screw portion 18 a through a washer 19. The vehicle body 17 side is fixed to the inner cylinder portion 14 of the insulator 12 by the fastening force of the nut 20. Further, the upper and lower washers 16 and 19 are the vertical displacement restricting portions of the outer cylinder portion 13. Note that the suspension member of the front suspension is also attached to the vehicle body 17 side.
[0007]
Further, the difference between the case of the four-wheel drive vehicle of FIG. 6A and the case of the two-wheel drive vehicle of FIG. 6B is the height (length) of the inner cylinder portion 14 of the insulator 12, The height dimension H1 of the inner cylinder portion 14 in the case of a four-wheel drive vehicle is set to be longer than the height dimension H2 in the case of the two-wheel drive vehicle of FIG. Accordingly, the height of the vehicle body side with respect to the suspension member 1 is set to different heights h1 and h2 between the four-wheel drive vehicle and the two-wheel drive vehicle, and a difference is provided in the vehicle posture.
[0008]
In order to attach the suspension member 1 to the vehicle body 17, as shown in FIG. 7, a washer 16 is put on the upper surface side of the insulator 12 previously attached to the suspension member 1, and the washer 16 is used by using a rubber fitting portion 15a. To fit. Next, the suspension member 1 is lifted up with respect to the vehicle body 17 flowing from the upstream of the line, and the pin 18 of the vehicle body 17 is inserted into the pin insertion hole 16 a of the washer 16 and the inner cylinder portion 14 of the insulator 12. And if the nut 20 is screwed in via the washer 19 to the lower end of the pin 18 which protruded from the downward direction of the inner cylinder part 14 of the insulator 12, it will be completed.
[0009]
[Problems to be solved by the invention]
However, in the above-described conventional suspension member 1 mounting structure, the rubber member 15 for vibration damping is extended to the upper end of the inner cylinder portion 14 in order to temporarily fix the washer 16, thereby forming the rubber fitting portion 15a. Therefore, a large amount of rubber was used, which was a cause of high costs. Particularly, in the case of a four-wheel drive vehicle, since the height (length) dimension H1 of the inner cylinder portion 14 is long, the amount of rubber used is increased, which is a problem.
[0010]
Since the washer 16 is temporarily fixed to the suspension member 1, if there is a relative displacement between the suspension member 1 and the vehicle body 17, the pin 18 of the vehicle body 17 is temporarily fixed in the process of lifting the suspension member 1. There was a risk that the washer 16 would fall off against the washer 16. Further, since the washer 16 is temporarily fixed to the suspension member 1, the time point for temporarily fixing the washer in the vehicle production line is limited, and there is a disadvantage that the process design of the line is not flexible.
[0011]
Further, the height (length) of the inner cylinder portion 14 of the insulator 12 is made different so that the height on the vehicle body 17 side with respect to the suspension member 1 is set to a different height between the four-wheel drive vehicle and the two-wheel drive vehicle. Therefore, different insulators 12 have to be used for the four-wheel drive vehicle and the two-wheel drive vehicle.
[0012]
Therefore, the present invention requires a small amount of member used for temporarily fixing the washer, and there is almost no possibility that the temporarily fixed washer will fall off, and the time point for temporarily fixing the washer is not limited, and the process of the vehicle production line It is an object of the present invention to provide a suspension member mounting structure and a mounting method therefor that allow a wide range of design freedom. In addition, the amount of use of the members necessary for temporarily fixing the washer is small, and there is almost no possibility that the temporarily fixed washer will fall off, and the vehicle body side height relative to the suspension member is set to a plurality of different heights. It is an object of the present invention to provide a suspension member mounting structure and a mounting method thereof that can share the same insulator even when there is a difference in vehicle posture.
[0013]
[Means for Solving the Problems]
According to a first aspect of the present invention, an insulator is attached to a suspension member, the outer cylinder part fixed to the suspension member, an inner cylinder part disposed inside the outer cylinder part, the outer cylinder part and the inner cylinder part And a buffer member fixed to both of them, and a vehicle body side pin is inserted into the inner cylinder portion, and the suspension member is fixed to the vehicle body by fixing the pin to the inner cylinder portion. In the suspension member mounting structure to be mounted, a washer inserted into the pin is interposed between the vehicle body and the inner cylinder, and the inner surface of the pin insertion hole of the washer is compressed and deformed by the inserted pin. Allow pin insertion Before attaching the suspension member, fit the washer to the pin on the vehicle body so that it can be temporarily fixed with the washer. An elastic crimping portion is provided.
[0014]
Therefore, since the elastic crimping portion is provided on the inner surface of the pin insertion hole of the washer, it is much smaller than the space to be added to the outer peripheral side of the inner cylinder portion of the insulator, and it is assumed that the washer is inserted into the pin of the vehicle body. To stop, even if there is a relative displacement between the suspension member and the vehicle body, the member does not hit the washer temporarily fixed to the vehicle body pin during the lift-up process of the suspension member. Even if the member abuts against the washer, the washer is temporarily fixed in the state where it is inserted into the pin with the restoring force due to the compression deformation of the elastic crimping part, so it does not come off easily, and furthermore, it can be temporarily fixed to the pin of the vehicle body with a single washer, The temporary fixing time may be upstream of the pin fixing process of the vehicle production line.
[0015]
The invention of claim 2 is the suspension member mounting structure according to claim 1, wherein the vehicle body side height relative to the suspension member is set to a plurality of different heights to provide a difference in vehicle posture. The height of the inner cylinder portion of the insulator is set to be constant below the height required for the lowest vehicle posture, the washer is in contact with the upper surface of the inner cylinder portion, and the height of each vehicle posture is set. According to the present invention, an auxiliary foot portion for compensating for this height is provided.
[0016]
Therefore, in addition to the operation of the invention of claim 1, the height of the inner cylinder portion of the insulator is constant even when the height of the vehicle body side relative to the suspension member is set to a plurality of different heights.
[0017]
The invention according to claim 3 is the suspension member mounting structure according to claim 1, wherein the vehicle body side height relative to the suspension member is set to a plurality of different heights to provide a difference in vehicle posture. The inner cylinder portion of the insulator is set to a height required for the lowest vehicle posture, except for the lowest vehicle posture, the washer is in contact with the upper surface of the inner cylinder portion, and An auxiliary foot for compensating for this height is provided according to the height of each vehicle posture.
[0018]
Therefore, in addition to the operation of the invention of claim 1, the height of the inner cylinder portion of the insulator is constant even when the vehicle body side height relative to the suspension member is set to a plurality of different heights. Therefore, it is not necessary to interpose a washer between the vehicle body and the insulator for the vehicle having the lowest vehicle posture.
[0019]
According to a fourth aspect of the present invention, there is provided the suspension member mounting structure according to the first aspect, wherein the vehicle body side height relative to the suspension member is set to a different height between the four-wheel drive vehicle and the two-wheel drive vehicle. The height of the inner cylinder part of the insulator is set to a height required for the attitude of the two-wheel drive vehicle, the washer is in contact with the upper surface of the inner cylinder part, and An auxiliary foot is provided to compensate for the height required for the posture of the four-wheel drive vehicle.
[0020]
Therefore, in addition to the operation of the invention of claim 1, the height of the inner cylindrical portion of the insulator is also set when the height of the vehicle body side with respect to the suspension member is set to be different between the four-wheel drive vehicle and the two-wheel drive vehicle. Since it is constant and the height is set to a height required for the posture of the two-wheel drive vehicle, it is not necessary to provide a washer between the vehicle body and the insulator for the two-wheel drive vehicle. .
[0021]
A fifth aspect of the present invention is the suspension member mounting structure according to any one of the first to fourth aspects, wherein the elastic pressure-bonding portion is provided only in a part of the inner periphery of the pin insertion hole of the washer. Features.
[0022]
Therefore, in addition to the effects of the first to fourth aspects of the invention, the space for arranging the elastic crimping portion becomes very narrow.
[0023]
A sixth aspect of the present invention is the suspension member mounting structure according to any one of the first to fifth aspects, wherein the elastic pressure-bonding portion is made of a rubber material.
[0024]
Therefore, in addition to the effects of the inventions of the first to fifth aspects, since the rubber material generally has a large friction coefficient, it has a great resistance to the external force in the direction of the washer removal.
[0025]
According to the seventh aspect of the present invention, an insulator is attached to the suspension member, the outer cylinder portion fixed to the suspension member, the inner cylinder portion disposed inside the outer cylinder portion, the outer cylinder portion, and the inner cylinder portion. And a compression member that is compressively deformable on the inner surface of the pin insertion hole of the washer, and a pin on the vehicle body side is provided in the pin insertion hole of the washer. The elastic crimping part is elastically deformed by this pin to allow the insertion of the pin, and the washer is fitted to the pin Then temporarily fix the washer separately And a pin fixing step of fixing the pin to the inner cylinder portion by inserting the pin temporarily fixing the washer into the inner cylinder portion of the insulator.
[0026]
Therefore, the suspension member is attached to the vehicle body by the washer temporary fixing process and the pin fixing process, and the elastic crimping part is provided on the inner surface of the pin insertion hole of the washer. Therefore, compared with the space to be added to the outer peripheral side of the inner cylinder part of the insulator. Because it is much smaller and is temporarily fixed with the washer inserted into the pin of the vehicle body, even if there is a relative displacement between the suspension member and the vehicle body, it is temporarily fixed to the vehicle body pin during the lift-up process of the suspension member. Because any member does not hit the washer, and even if the member hits the washer for any reason, the washer is temporarily fixed in a state of being inserted into the pin by the restoring force due to the compression deformation of the elastic crimping portion. It is not easily disengaged, and it can be temporarily fixed to the vehicle body pin with a single washer, so upstream of the pin fixing process in the vehicle production line Well washer temporarily fixed point in time is not limited, if any.
[0027]
The invention according to claim 8 is a case where the height of the vehicle body side with respect to the suspension member is set to a different height between the four-wheel drive vehicle and the two-wheel drive vehicle to provide a difference in vehicle posture, and an insulator is provided on the suspension member. The insulator is fixed between the outer cylinder part fixed to the suspension member, the inner cylinder part arranged inside the outer cylinder part, the outer cylinder part and the inner cylinder part, and both of them. The inner cylinder portion is set to a height required for the posture of the two-wheel drive vehicle, the washer abuts against the upper surface of the inner cylinder portion, and the four-wheel Auxiliary feet are provided to compensate for the height required for the posture of the drive vehicle, and an elastic pressure-bonding portion capable of compressive deformation is provided on the inner surface of the pin insertion hole,
In the case of a four-wheel drive vehicle, a pin on the vehicle body side is inserted into the pin insertion hole of the washer, the elastic pressure-bonding portion is elastically deformed by this pin, and the insertion of the pin is allowed, and the washer is attached to the pin. The washer is temporarily fixed, and the pin with the washer temporarily fixed is inserted into the inner cylindrical portion of the insulator, and the pin is inserted with the washer interposed between the vehicle body and the inner cylindrical portion. Perform pin fixing process to fix to the inner cylinder part,
In the case of a two-wheel drive vehicle, the pin on the vehicle body side is inserted into the inner cylinder portion of the insulator without performing the washer temporary fixing step, and the washer is not interposed between the vehicle body and the inner cylinder portion. A pin fixing step of fixing the pin to the inner cylinder portion is performed.
[0028]
Therefore, in the case of a four-wheel drive vehicle, the suspension member is attached to the vehicle body by the washer temporary fixing step and the pin fixing step, and has the same action as the invention of claim 7. In this case, the suspension member is attached to the vehicle body only by the pin fixing process without performing the washer temporary fixing process. In addition, the height of the inner cylindrical portion of the insulator is high in both of the four-wheel drive vehicle and the two-wheel drive vehicle. Certain things can be used.
[0029]
【The invention's effect】
According to the first aspect of the present invention, since the elastic crimping portion is provided on the inner surface of the pin insertion hole of the washer, it is much smaller than the space to be added to the outer peripheral side of the inner cylindrical portion of the insulator, and is a member necessary for temporarily fixing the washer. Since the amount used is small, and the washer is temporarily fixed with the pin inserted into the vehicle body pin, even if there is a relative displacement between the suspension member and the vehicle body, The member does not hit the washer temporarily fixed to the pin, and even if the member hits the washer for any reason, the washer is temporarily fixed in the state of being inserted into the pin by the restoring force due to the compression deformation of the elastic crimping portion. Therefore, the washer that is temporarily fixed does not come off easily, and there is almost no risk of the washer dropping off. Point may washer tacking point if upstream of the pin fixing step of the vehicle production line is not limited, spread freedom in the process design of the vehicle production line.
[0030]
In the invention of claim 2, in addition to the effect of the invention of claim 1, the height of the inner cylindrical portion of the insulator is constant even when the height of the vehicle body side relative to the suspension member is set to a plurality of different heights. Therefore, the insulator can be shared.
[0031]
In the invention of claim 3, in addition to the effect of the invention of claim 1, the height of the inner cylindrical portion of the insulator is constant even when the height of the vehicle body side relative to the suspension member is set to a plurality of different heights. Therefore, since the insulator can be shared and the height of the inner cylinder portion is set to a height required for the lowest vehicle posture, the vehicle with the lowest vehicle posture is placed between the vehicle body and the insulator. There is no need for a washer, reducing the number of parts, reducing the installation process, and reducing costs.
[0032]
According to the invention of claim 4, in addition to the effect of the invention of claim 1, the inner cylinder of the insulator is provided even when the height of the vehicle body side with respect to the suspension member is set to a different height between the four-wheel drive vehicle and the two-wheel drive vehicle. Since the height of the part is constant, the insulator can be shared, and the height is set to a height required for the posture of the two-wheel drive vehicle. There is no need to provide a washer between the two, reducing the number of parts, reducing the installation process, and reducing costs.
[0033]
In the invention of claim 5, in addition to the effects of the inventions of claims 1 to 4, the arrangement space of the elastic crimping portion becomes very narrow, and therefore, the amount of members used for temporarily fixing the washer can be reduced.
[0034]
In the invention of claim 6, in addition to the effects of the inventions of claims 1 to 5, the rubber material generally has a large friction coefficient, so that it has a large resistance against the external force in the direction in which the washer is pulled out. There is no risk of dropping off.
[0035]
According to the seventh aspect of the invention, the suspension member is attached to the vehicle body by the washer temporary fixing step and the pin fixing step, and the elastic crimping portion is provided on the inner surface of the pin insertion hole of the washer, so that it is added to the outer peripheral side of the inner cylindrical portion of the insulator. It is much smaller than the space that should be used, and the amount of material required to temporarily fix the washer is small. Also, since the washer is temporarily fixed in the state of being inserted into the pin of the vehicle body, the suspension member and the vehicle body are relatively Even if there is a misalignment, the member does not hit the washer temporarily fixed to the pin of the vehicle body during the lift-up process of the suspension member. Even if the member hits the washer for any reason, the washer Because it is temporarily fixed in a state where it is inserted into the pin with a restoring force due to compression deformation, it does not come off easily, and the temporarily fixed washer falls off. Since there is almost no such thing, and it can be temporarily fixed to the pin of the vehicle body with a single washer, it is not limited as long as it is upstream of the pin fixing process of the vehicle production line, and the degree of freedom in designing the process of the vehicle production line is not limited. Spread.
[0036]
In the invention of claim 8, in the case of a four-wheel drive vehicle, the suspension member is attached to the vehicle body by the washer temporary fixing step and the pin fixing step, and has the same effect as the invention of claim 7 above, and 2 In the case of a wheel drive vehicle, the suspension member is attached to the vehicle body only by the pin fixing step without performing the washer temporary fixing step, and in addition, the inner cylinder of the insulator in both cases of the four wheel drive vehicle and the two wheel drive vehicle. Since the part with a constant height can be used, the insulator can be shared, and the height of the inner cylinder part is set to a height required for the posture of the two-wheel drive vehicle, so that the two-wheel drive vehicle In contrast, there is no need to provide a washer between the vehicle body and the insulator, which reduces the number of parts, reduces the mounting process, and reduces costs.
[0037]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0038]
In this embodiment, the height of the vehicle body side with respect to the suspension member 1 is set to a different height between the four-wheel drive vehicle and the two-wheel drive vehicle, and a difference is provided in the vehicle posture. FIG. FIG. 1B is a cross-sectional view of the suspension member mounting structure in the case of a two-wheel drive vehicle, and FIG. 2A is a plan view of the washer 34. FIG. 2 (b) is a cross-sectional view taken along the line AA in FIG. 2 (a), and FIG. 2 (c) is an enlarged cross-sectional view of the main part of FIG.
[0039]
In FIG. 1 and FIG. 2, an insulator 30 is attached to the suspension member 1, and the insulator 30 is fixed to the suspension member 1 and an inner cylinder part disposed inside the outer cylinder part 31. 32 and a rubber member 33 as a buffer member fixed between the outer cylinder portion 31 and the inner cylinder portion 32 and fixed to both of them. The height (length) of the inner cylinder part 32 is set to a height H necessary for the posture of the two-wheel drive vehicle. Unlike the conventional example, the rubber member 33 does not extend to the upper end of the inner cylinder portion 32.
[0040]
Here, in the case of the four-wheel drive vehicle of FIG. 1A, the washer 34 is disposed on the upper surface of the inner cylinder portion 32, and the vehicle body 17 is disposed on the upper surface of the washer 34. A pin 18 protrudes below the vehicle body 17, and the pin 18 is inserted into the pin insertion hole 34 c and the inner cylinder portion 32 of the washer 34. On the other hand, in the case of the two-wheel drive vehicle of FIG. 1B, the vehicle body 17 is directly disposed on the upper surface of the inner cylinder portion 32 without the washer 34 being disposed. A pin 18 protrudes below the vehicle body 17, and this pin 18 is inserted into the inner cylinder portion 32.
[0041]
A screw portion 18a is formed on the lower end side of the pin 18 in both the case of the four-wheel drive vehicle of FIG. 1A and the case of the two-wheel drive vehicle of FIG. A nut 20 is screwed through a washer 19. The vehicle body 17 side is fixed to the inner cylinder portion 32 of the insulator 30 by the fastening force of the nut 20. That is, the only difference between the case of the four-wheel drive vehicle in FIG. 1A and the case of the two-wheel drive vehicle in FIG. In the case of a four-wheel drive vehicle, the upper and lower washers 34 and 19 are the vertical displacement restricting portions of the outer cylinder portion 31, and in the case of a two-wheel drive vehicle, the lower surface of the vehicle body 17 is the outer cylinder. The lower washer 19 is a displacement restricting portion below the outer cylinder portion 31 in the displacement restricting portion above the portion 31.
[0042]
As shown in detail in FIG. 2, the washer 34 has an auxiliary foot 34b bonded to the lower surface of the washer main body 34a by welding or the like, and a pin insertion hole 34c is formed at the center of the washer main body 34a and the auxiliary foot 34b. Has been. The outer peripheral end portion of the washer main body 34 a is set at the same height as the lower surface of the auxiliary foot portion 34 b, and serves as an upper variation regulating portion of the outer cylinder portion 31. The auxiliary foot portion 34b is cylindrical and has substantially the same inner diameter and outer diameter as the inner cylindrical portion 32 of the insulator 30, and the lower surface of the auxiliary foot portion 34b is the upper surface of the inner cylindrical portion 32 of the insulator 30 in the mounted state. Are substantially in contact with each other.
[0043]
Further, the height (length) of the auxiliary foot portion 34b is set to a height for supplementing the height required for the posture in the case of a four-wheel drive vehicle. To be precise, the height (length) of the auxiliary foot 34b is set to h5, the wall thickness of the washer body 34a is set to d, and the height on the vehicle body 17 side with respect to the suspension member 1 in the four-wheel drive vehicle is set to h3 (FIG. 1 (a )) And h4 (see FIG. 1 (b)) in the two-wheel drive vehicle, the height (h5 + d) of the washer 34 is the vehicle body side with respect to the suspension member 1 of the four-wheel drive vehicle and the two-wheel drive vehicle. The height difference is set to be (h3−h4).
[0044]
Further, an elastic pressure-bonding portion 34d is provided on the inner surface of the pin insertion hole 34c and partially circumferentially, and the elastic pressure-bonding portion 34d is made of a rubber material. The inner diameter of the pin insertion hole 34c itself is larger than that of the pin 18, and the inner diameter of the elastic crimping portion 34d is set smaller than that of the pin 18, and the pin 18 into which the elastic crimping portion 34d is inserted is compressed and deformed to insert the pin 18. Is configured to allow.
[0045]
In order to attach the suspension member 1 to the vehicle body 17, as shown in FIG. 3, in the case of a four-wheel drive vehicle, first, the pin 18 on the vehicle body 17 side is inserted into the pin insertion hole 34c of the washer 34. Then, the elastic crimping portion 34d is compressed and deformed by the pin 18 and insertion of the pin 18 is allowed, and the inserted washer 34 is fitted to the pin 18 by the elastic deformation restoring force of the elastic crimping portion 34d (washer temporary fixing step). ).
[0046]
Next, the suspension member 1 is lifted up with respect to the vehicle body 17 flowing from the upstream side of the line, and the pin 18 of the vehicle body 17 is inserted into the inner cylinder portion 32 of the insulator 30. Then, the washer 34 is disposed between the vehicle body 17 and the insulator 30 in a state where the auxiliary foot part 34 b of the washer 34 temporarily fixed is on the upper surface of the inner cylinder part 32. Then, the nut 20 is screwed into the lower end of the pin 18 projecting from below the inner cylindrical portion 32 of the insulator 30 via the washer 19 (pin fixing step).
[0047]
In the case of a two-wheel drive vehicle, the suspension member 1 is lifted up with respect to the vehicle body 17 that has flowed from the upstream side of the line without performing the washer temporary fixing process, and the pin 18 of the vehicle body 17 has the inner cylinder portion 32 of the insulator 30. Inserted into. Then, the upper surface of the inner cylinder portion 32 of the insulator 30 is brought into direct contact with the lower surface of the vehicle body 17. Then, the nut 20 is screwed into the lower end of the pin 18 projecting from below the inner cylindrical portion 32 of the insulator 30 via the washer 19 (pin fixing step).
[0048]
In the mounting process of the suspension member 1, in the case of a four-wheel drive vehicle, the washer 34 is temporarily fixed in a state where the washer 34 is inserted into the pin 18 of the vehicle body 17, so that there is a relative displacement between the suspension member 1 and the vehicle body 17. Even when the suspension member 1 is lifted up, an arbitrary member does not hit the washer 34 temporarily fixed to the pin 18 of the vehicle body 17, and even if the member hits the washer 34 for any reason, the washer Since 34 is temporarily fixed in a state where it is inserted into the pin 18 by a restoring force or the like due to compressive deformation of the elastic pressure-bonding portion 34d, it is not easily detached, and there is almost no possibility that the temporarily fixed washer 34 falls off. In particular, in this embodiment, the elastic crimping portion 34d is made of a rubber material, and since the rubber material generally has a large friction coefficient, it has a great resistance to an external force in the direction in which the washer 34 is pulled out. There is no risk of 34 dropping off.
[0049]
Furthermore, in the case of a four-wheel drive vehicle, the washer 34 can be temporarily fixed to the pin 18 of the vehicle body 17 alone, so that the washer temporary fixing point is not limited as long as it is upstream of the pin fixing process of the vehicle production line. Flexibility in process design.
[0050]
In the case of a two-wheel drive vehicle, the suspension member is attached to the vehicle body only by the pin fixing step without performing the washer temporary fixing step, so that the washer 34 is not dropped and the attachment step is simplified.
[0051]
According to the mounting structure of the suspension member 1 mounted in this way, the elastic crimping portion 34d is provided on the inner surface of the pin insertion hole 34c of the washer 34, and therefore should be added to the outer peripheral side of the inner cylinder portion of the insulator 30 as in the prior art. Since it is much smaller than the space, the amount of members used for temporarily fixing the washer 34 can be reduced. In particular, in this embodiment, since the elastic crimping portion 34d is provided only in a partial circumferential shape on the inner surface of the pin insertion hole 34c, the arrangement space of the elastic crimping portion 34d becomes very narrow, and is further necessary for temporary fixing. The amount of material used is small.
[0052]
In either case of a four-wheel drive vehicle or a two-wheel drive vehicle, the inner cylinder portion 32 of the insulator 30 having a constant height can be used, so that the insulator 30 can be shared. Further, since the height of the inner cylindrical portion 32 of the insulator 30 is set to a height necessary for the posture of the two-wheel drive vehicle, the washer 34 is provided between the vehicle body 17 and the insulator 30 for the two-wheel drive vehicle. There is no need to intervene to reduce the number of parts and reduce costs.
[0053]
4A is a cross-sectional view of a modified example of the washer 35, and FIG. 4B is a cross-sectional view of a suspension member mounting structure in a four-wheel drive vehicle using the washer 35 of the modified example. 4 (a) and 4 (b), the washer 35 is integrally formed of a disk portion 35a and an auxiliary foot portion 35b provided on the upper surface, and is formed on the disk portion 35a and the auxiliary foot portion 35b. An elastic pressure-bonding portion 35d protrudes from the pin insertion hole 35c. The washer 35 of the modified example has a simpler shape than the washer 34 of the above embodiment because the disk portion 35a abuts on the inner cylinder portion 32 of the insulator 30 and becomes the upper displacement restricting portion of the outer cylinder portion 31. In FIG. 4B, the same components as in the above embodiment are given the same reference numerals in the drawing, and the description thereof is omitted. Even when the washer 35 of this modification is used, there are substantially the same operations and effects as in the above embodiment.
[0054]
According to the suspension member mounting structure of the embodiment described above, the height of the inner cylinder portion 32 of the insulator 30 is set to a height required for the lowest vehicle (two-wheel drive vehicle) posture, and the one with the lowest vehicle posture is used. For the removed vehicle (four-wheel drive vehicle), the washer 34 is provided with an auxiliary foot portion 34b that abuts the upper surface of the inner cylinder portion 32 and compensates for this height according to the height of each vehicle posture. However, the height of the inner cylindrical portion 32 of the insulator 30 is set to a height required for each vehicle (two-wheel drive vehicle and four-wheel drive vehicle) posture, and the washer 34 has only the elastic pressure-bonding portion 34d as an auxiliary foot portion. It is good also as a structure which does not provide 34b. However, in this case, the washer 34 can be shared by all types of vehicles, but the insulator 30 cannot be shared.
[0055]
According to the suspension member mounting structure of the above-described embodiment, the height of the inner cylinder portion 32 of the insulator 30 is set to a height required for the lowest (two-wheel drive vehicle) posture, except for the lowest vehicle posture. The washer 34 is provided with an auxiliary foot 34b that abuts against the upper surface of the inner cylinder portion 32 and compensates for this height according to the height of each vehicle posture. However, the height of the inner cylinder part 32 of the insulator 30 is set to be constant below the height required for the lowest vehicle posture (two-wheel drive vehicle), and the washer 34 is in contact with the upper surface of the inner cylinder part 32. And you may provide the auxiliary | assistant leg part 34b for supplementing this height according to the height of each vehicle (4-wheel drive vehicle and 2-wheel drive vehicle) attitude | position. However, in this case, the insulator 30 can be shared, but the washer 34 is required for all types of vehicles.
[0056]
According to the suspension member mounting structure of the above-described embodiment, as a case where the vehicle body 17 side height with respect to the suspension member 1 is set to a plurality of different heights to provide a difference in vehicle posture, a four-wheel drive vehicle and a two-wheel drive vehicle are used. Although the two-stage case is shown, the present invention can be similarly applied to the case of three stages or four or more stages.
[0057]
In addition, according to the said embodiment, although the elastic crimping | compression-bonding part 34d was provided only in the partial inner periphery shape of the pin insertion hole 34c of the said washer 34, you may provide in the whole region of the pin insertion hole 34c.
[0058]
In addition, according to the said embodiment, although the elastic crimping | compression-bonding part 34d was comprised with the rubber material, you may comprise by a resin, Teflon, etc. partially inner peripheral form, or for example by coating in the whole region.
[Brief description of the drawings]
1A is a cross-sectional view of a suspension member mounting structure in the case of a four-wheel drive vehicle according to an embodiment of the present invention, and FIG. 1B is a case of a two-wheel drive vehicle according to an embodiment of the present invention. It is sectional drawing of the attachment structure of a suspension member.
2A is a plan view of a washer according to an embodiment of the present invention, FIG. 2B is a cross-sectional view taken along line AA of FIG. 2A, and FIG. is there.
FIG. 3 is a perspective view illustrating a suspension member attaching process in the case of a four-wheel drive vehicle according to an embodiment of the present invention.
4A is a cross-sectional view of a modified example of the washer, and FIG. 4B is a cross-sectional view of a suspension member mounting structure in the case of a four-wheel drive vehicle using the washer of the modified example.
FIG. 5 is a perspective view schematically showing the outline of a rear suspension device.
6A is a cross-sectional view of a suspension member mounting structure for a four-wheel drive vehicle according to a conventional example, and FIG. 6B is a cross-sectional view of a suspension member mounting structure for a two-wheel drive vehicle according to a conventional example. FIG.
FIG. 7 is a perspective view for explaining a suspension member attaching process in the case of a four-wheel drive vehicle according to a conventional example.
[Explanation of symbols]
1 Suspension member
17 body
18 pin
30 Insulator
31 Outer tube
32 Inner tube
33 Rubber member (buffer member)
34, 35 washers
34b, 35b Auxiliary feet
34c, 35c Pin insertion hole
34d, 35d elastic crimping part

Claims

An insulator is attached to the suspension member, and the outer cylinder part fixed to the suspension member, the inner cylinder part arranged inside the outer cylinder part, and the outer cylinder part and the inner cylinder part, and these In the suspension member mounting structure, which comprises a shock absorbing member fixed to both sides, and a vehicle body side pin is inserted into the inner cylindrical portion and the suspension member is fixed to the inner cylindrical portion by fixing the pin to the inner cylindrical portion. ,
Interposed the inserted washer the pin between the vehicle body and the inner cylindrical portion, the inner surface of the pin insertion hole of the washer, allowing insertion of the pin deformed by compression by the pin inserted Suspension A suspension member mounting structure comprising an elastic pressure-bonding portion that allows a washer to be fitted to a pin on the vehicle body side before the member is mounted so that the washer can be temporarily fixed .

The suspension member mounting structure according to claim 1, wherein the vehicle body side height relative to the suspension member is set to a plurality of different heights to provide a difference in vehicle posture, and the inner cylinder of the insulator The height of the portion is set to be constant below the height required for the lowest vehicle posture, the washer abuts against the upper surface of the inner cylinder portion, and this height is set according to the height of each vehicle posture. A suspension member mounting structure, characterized in that an auxiliary foot portion is provided for supplementing.

The suspension member mounting structure according to claim 1, wherein the vehicle body side height relative to the suspension member is set to a plurality of different heights to provide a difference in vehicle posture, and the inner cylinder of the insulator The height of the section is set to a height required for the lowest vehicle posture, except for the lowest vehicle posture, the washer abuts the upper surface of the inner cylinder portion, and the height of each vehicle posture is set. A suspension member mounting structure characterized in that an auxiliary foot portion is provided to compensate for this height.

The suspension member mounting structure according to claim 1, wherein the vehicle body side height relative to the suspension member is set to a different height for a four-wheel drive vehicle and a two-wheel drive vehicle to provide a difference in vehicle posture. The height of the inner cylinder part of the insulator is set to a height required for the attitude of the two-wheel drive vehicle, the washer abuts the upper surface of the inner cylinder part, and the attitude of the four-wheel drive vehicle Suspension member mounting structure, characterized in that an auxiliary foot is provided to compensate for the height required for the suspension.

The suspension member mounting structure according to any one of claims 1 to 4,
The suspension member mounting structure according to claim 1, wherein the elastic crimping portion is provided only in a part of the inner periphery of the pin insertion hole of the washer.

The suspension member mounting structure according to any one of claims 1 to 5,
The suspension member mounting structure, wherein the elastic crimping portion is made of a rubber material.

An insulator is attached to the suspension member, and the outer cylinder part fixed to the suspension member, the inner cylinder part arranged inside the outer cylinder part, and the outer cylinder part and the inner cylinder part, and these It is composed of a buffer member fixed to both sides, and an elastic pressure-bonding portion that can be compressed and deformed is provided on the inner surface of the pin insertion hole of the washer,
Insert the pin of the vehicle body side pin insertion hole of the washer, the elastic pressure-bonding part allows insertion of the pin is elastically deformed by the pin, and, in the washer separately by fitting the washer on the pin performs a temporary stop to the washer temporary fixing process,
A suspension member mounting method comprising: a pin fixing step of inserting the pin with the washer temporarily fixed into the inner cylinder portion of the insulator and fixing the pin to the inner cylinder portion.

When the height of the vehicle body side with respect to the suspension member is set to a different height between the four-wheel drive vehicle and the two-wheel drive vehicle,
An insulator is attached to the suspension member, and an outer cylinder part fixed to the suspension member, an inner cylinder part arranged inside the outer cylinder part, and between the outer cylinder part and the inner cylinder part, and The inner cylinder part is set to a height required for the posture of the two-wheel drive vehicle, and the washer contacts the upper surface of the inner cylinder part. Provided with an auxiliary foot for making contact with and supplementing the height required for the posture of the four-wheel drive vehicle, and provided with an elastic pressure-bonding portion capable of compressive deformation on the inner surface of the pin insertion hole,
In the case of a four-wheel drive vehicle, a pin on the vehicle body side is inserted into the pin insertion hole of the washer, the elastic pressure-bonding portion is elastically deformed by this pin, and the insertion of the pin is allowed. Perform the washer temporary fixing process to fit
A pin fixing step is performed in which the pin with the washer temporarily fixed is inserted into the inner cylinder portion of the insulator, and the pin is fixed to the inner cylinder portion with the washer interposed between the vehicle body and the inner cylinder portion. ,
In the case of a two-wheel drive vehicle, the pin on the vehicle body side is inserted into the inner cylinder portion of the insulator without performing the washer temporary fixing step, and the washer is not interposed between the vehicle body and the inner cylinder portion. A method of attaching a suspension member, comprising performing a pin fixing step of fixing the pin to the inner cylinder portion.