| 摘要 |
<p>The present invention relates to a frame unit for a bicycle, and a manufacture method thereof. According to an embodiment of the present invention, the frame unit for the bicycle includes: a head tube; a seat tube; a frame and both side stays dividing the head tube; the seat tube; and the frame and both side stays into a left and right side respectively, integrally forming a left and right side frame body. The left and right side frame body are connected along a mutual edge of the left and right side frame bodies, and the head tube has a retaining ring on the upper and lower side respectively.</p> |
