| 摘要 |
The coupling has lower and upper plates (2, 3) provided at bottom and top of wings (14) and comprising respective orifices (21, 31) corresponding to orifices (141) of guides (1). The orifices of the upper plate have diameter larger than that of the wings. Distance between the orifices of the upper plate is shorter than that of the wings. A retention unit (4) e.g. screws (41) and nuts (42), in the orifices applies pressure and compresses the wings between the plates while exerting light side pressure on the guides so as to be aligned due to difference between the diameters and the distances. |
