| 摘要 |
The present invention relates to a frame unit for a bicycle. According to an embodiment of the present invention, the frame unit for a bicycle includes: a head tube, a seat tube, a frame, and stays of both sides. The frame unit for a bicycle forms a left side frame body and a right side frame body which are integrated by respectively dividing the head tube, the seat tube, the frame, and the stays of both sides into a left side and a right side; and the present invention is connected along a mutual edge of the left side frame body and the right side frame body. A seat pipe shaped in a pipe form through a phased press forming is inserted and connected to the seat tube. |
