| 摘要 |
PROBLEM TO BE SOLVED: To provide a suspension beam improving the practicality of a suspension device.SOLUTION: A beam includes (A) a cylindrical beam body 50 and (B) a pair of nearly plate-like attachment seats 52 joined with both ends of the beam body 50 with their backs directed oppositely and each attached with a wheel holding member 38 holding a wheel 22 in a rotatable way. The beam body 50 is formed with notches 60 each in both end parts, and each of the pair of the attachment seats 52 is joined in such a way as to be engaged partially in the end part of the beam body 50. Before the beam body 50 is joined with the pair of the attachment seats 52, the inclination of the attachment seats 52 to the axis line of the beam body 50 is easily adjustable. |
