The utility model discloses a front sub -frame of convenient
assembly swing arm relates to the field of automotive parts. The front sub -frame of convenient
assembly swing arm, including frame main part and swing arm main part, frame U type open file and frame
closed cavity are provided with in frame main part side, one end of swing arm main part is provided with swing arm
closed cavity, just swing arm U type open file is provided with in the other end of swing arm main part. The front sub -frame of convenient
assembly swing arm, has broken the design concept of traditional front sub -frame and swing arm same direction assembly, has designed the
assembly structure of positive and negative
collocation innovatively, in the assembly process, when swing arm
closed cavity of swing arm main part front point is embedded into frame U type open file of frame main part, utilizes swing arm U type open file of swing arm main part back point and the virtual positioning that forms with frame closed cavity of frame main part, and the design of virtual positioning makes swing arm main part front and back point not to occur misplacement in the assembly process, has reduced the assembly difficulty.