| 摘要 |
PROBLEM TO BE SOLVED: To provide a travelling roller equipped with a travelling roller body having a boss and a travelling roller shaft of a single component, for example in a vacuum cleaner, and having a structure assuring the function as the travelling roller and more advantageous for assembling a travelling rotor, regarding attachment of the travelling roller to an object. SOLUTION: The object 1 is made to be able to travel by the travelling roller 15. The travelling roller 15 has the boss 20 penetrated by and engaged with the travelling roller shaft 22. The travelling roller shaft 22 is screwed and fixed by a thread parts 30, 31 formed on projection parts 28, 29 projecting from the both sides of the boss 20 so that it is engaged with a counterpart thread 35 in a holder 23 of the object 1. The travelling roller shaft 22 is smoothly formed in a cooperation part 27 with the boss 20, and is screwed/fixed in the holder 23. COPYRIGHT: (C)2011,JPO&INPIT |
