PROBLEM TO BE SOLVED: To achieve both of improvement of rigidity (natural frequency) and improvement of front collision load transmission property although a sub-frame is formed into a shape detouring a power train.SOLUTION: A front sub-frame structure includes: a sub-frame body 2 for supporting a suspension; and a pair of right and left front-rear members 3 extending from the sub-frame body 2 to the front. Separation means 62 for separating the sub-frame body 2 from a vehicle body side using the retreat load is provided in a rear section of the sub-frame body 2. A bent section 7 is provided at the outside in a vehicle width direction of an arm front side support section 17 for supporting rear sections of the front-rear members 3 and a front section of a lower arm 50 of the suspension. A rear face section 7a of the bent section 7 and a front face section 53a located on a front side of a longitudinal direction extension arm section 52 extending backward in the lower arm 50 extend substantially parallel to each other in the vehicle width direction. A reinforcing gusset 21 is provided at a facing portion with the front face section 53a in the rear face section 7a.SELECTED DRAWING: Figure 4
【課題】パワートレインを迂回する形状のサブフレームでありながら、剛性(固有振動数)の向上と前突荷重伝達性向上を両立すること。【解決手段】サスペンションを支持するサブフレーム本体2とサブフレーム本体2から前方へ延びる左右一対の前後メンバ3とを備え、サブフレーム本体2の後部に該サブフレーム本体2をその後退荷重を利用して車体側から離脱させる離脱手段62が設けられ、前後メンバ3の後部、且つサスペンションのロアアーム50の前部を支持するアーム前側支持部17よりも車幅方向外側に屈曲部7が設けられ、該屈曲部7の後面部7aと、ロアアーム50における、後方へ延びる前後方向延設アーム部52の正面側に位置する前面部53aとが車幅方向に略平行に延び、後面部7aにおける前面部53aとの対面部位に補強ガセット21が設けられた。【選択図】図4
FRONT SUB-FRAME STRUCTURE
フロントサブフレーム構造
24.05.2018
Patent
Elektronische Ressource
Japanisch
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
Cavel structure for front auxiliary frame and front auxiliary frame
Europäisches Patentamt | 2022
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