| 摘要 |
The body(1) of a wheel guide rail(A,Aa) is made of light metal by metal moulding. A hole(3) is made along the whole length of the rail on th back or front side. A jointing hole(4) is made on the left or right side of the hole(3). A hollowed portion(6) is made in the inside edge of the opposite portion of the jointing hole. Wheel frame is bended with the same shape and a hole is made on it to attach a fixed pipe(9). The moving wheel of another guide rail is connected by a guide shaft (10) attached on the pipe(9). The moving wheels(11,12) are assembled on the bended wheel frame. A drawer(E) drives the moving wheel, which moves along the guide rail.
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