| 摘要 |
A rail structure for doors comprises a track rail body ( 3 ) which supports the door wheels ( 4 ) which are attached to a door ( 6 ) and freely roll on the track rail body ( 3 ), a load support member ( 2 ) which is extended along the track rail body ( 3 ) and supports the track rail body ( 3 ) from the bottom side, a cushion member ( 7 ) which is disposed between the track rail body ( 3 ) and the load support member ( 2 ) and absorbs the vibration from the track rail body ( 3 ). A convexo-concave fitting part ( 8 ) which performs convexo-concave fitting is formed on the bottom surface of the track rail body ( 3 ) and on the upper surface of the load support member ( 2 ) via the cushion member ( 7 ). Purposes of the invention are to prevent vibrations caused by the running of the door wheels ( 4 ) from being transmitted to building, and to improve the efficiency of replacement operations for the track rail body ( 3 ), and to lower the cost. |
