| 摘要 |
A roller/foot device ( 1 ) comprising a cylindrical outer sleeve ( 10 ), a guide sleeve ( 20 ) arranged inside the outer sleeve ( 10 ), locking sleeve ( 30 ) arranged inside the outer sleeve ( 10 ), a spring device where one end abuts against the outer sleeve's closed end ( 13 ) and the other end abuts against one end portion of the guide sleeve or the locking sleeve and a roller element ( 41 ) which is rotatably mounted abutting against the locking sleeve's ( 20 ) end portion which is located at the extreme end of the outer sleeve ( 10 ). The sleeves comprise ribs which can slide towards each other and cause the roller element ( 41 ) to assume different positions in the longitudinal direction of the outer sleeve ( 10 ) when the device ( 1 ) is subjected to forces. The device ( 1 ) can thereby be employed as a roller device with the roller element ( 41 ) in an outer position and as a foot device with the roller element ( 41 ) in an inner position. |
