| 摘要 |
<p>The present invention relates to an upper and a lower sliding mechanisms as well as an upper rail (70) and a lower rail (50) structures for showcases, wherein the lower rail structure has two rail grooves (51) with wider and shallower profile than usual rail for the same purposes and on which wheels (71) mounted on the lower sliding mechanism (10) can freely roll; and the lower sliding mechanism (10) is equipped with a wheel lock (30) having a stop section (33) which may be extended outward and retracted inward by using a key to respectively form a stable locking condition and an unlocking condition for the showcases. The upper rail (70) structure has a substantially M-shaped cross section, and two rail channels (71, 72) are formed at each side of a middle recess (73). In the upper sliding mechanism, two n-shaped insert channels (71, 72) are respectively disposed in the two rail channels (71, 72) to fitly receive glass sheets (8a, 8b) for showcases. A plurality of wheels (75) are set on the top faces (177) of the insert channels (74) in such a manner that the wheels interchangedly contact left and right inner wall surfaces of the rail channels (71, 72) and can freely roll thereon, whereby no swing and noise will occur during pulling or pushing the glasses.</p> |
