SUB-FRAME STRUCTURE OF AUTOMOBILE

• Main Authors: NAKAKURA HARUKI, KOMIYA KATSUYUKI, TAKAHASHI KAZUMA
• Format: Patent
• Language: English; Japanese
• Published: 13.10.2022
• Subjects: LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; MOTOR VEHICLES; PERFORMING OPERATIONS; TRAILERS; TRANSPORTING

To provide a sub-frame structure of an automobile capable of reducing the weight of a pivot support part, as well as, allowing a cam bolt to be provided, while securing arm support rigidity of a control arm.SOLUTION: In a sub-frame structure of an automobile according to the present invention, a pivot support portion 36 of a control arm 8 is provided on a rear surface portion 23b of each hanging portion 23 connected to each of left and right lower portions of a rear cross member 22. The pivot support portion 36 includes a bracket 37 having a U-shaped cross section. A bracket side support portion 37e is formed at an end portion on an outer side in a vehicle width direction of a rear surface portion 37c of the bracket 37, and a cross member side support portion 23c is formed at a suspending portion 23 of the rear cross member 22. A cam bolt 39 is inserted through each of the support portions 37e, 23c. In each of an upper surface portion 37a and a lower surface portion 37b of the bracket 37, an opening 37f is formed open outward in the vehicle width direction above and below the bracket side support portion 37e.SELECTED DRAWING: Figure 9 【課題】コントロールアームのアーム支持剛性を確保しつつ、ピボット支持部の軽量化を図ると共にカムボルトを設けることができる自動車のサブフレーム構造を提供する。【解決手段】本発明による自動車のサブフレーム構造は、リアクロスメンバ２２の左右下部に結合された垂下部２３の後面部２３ｂに、コントロールアーム８のピボット支持部３６が設けられ、ピボット支持部３６は断面コの字状のブラケット３７を含み、ブラケット３７の後面部３７ｃの車幅方向外方側の端部にブラケット側支持部３７ｃが形成され、かつ、リアクロスメンバ２２の垂下部２３にクロスメンバ側支持部２３ｃが形成され、各支持部３７ｃ、２３ｃにはカムボルト３９が挿通され、ブラケット３７の上面部３７ａおよび下面部３７ｂには、ブラケット側支持部３７ｅの上方および下方で車幅方向外方に開口する開口部３７ｆが形成されている。【選択図】図９