| 摘要 |
PROBLEM TO BE SOLVED: To provide energizing structure using a torsion coil spring capable of preventing a torsion coil spring installation part from breakdown. SOLUTION: This energizing structure is structured by providing a cylindrical hole part 31 for housing a coil part 11 of the torsion coil spring 10 in a fitting body 30, to which the torsion coil spring 10 and a member 20 to be energized by the torsion coil spring 10 are fitted, and supporting the coil part 11 from outside with the inner wall surface 32 of the cylindrical hole part 31, and providing the fitting body 30 with a hook part 33, on which one end of the torsion coil spring 10 is to be hooked, and hooking the other end 13 of the torsion coil spring 10 on the member 20 to be energized. The member 20 to be energized is a shaft of a roller 21 in an image forming device, and a roller unit 40 is structured of the roller 21, the fitting body 30 and the torsion coil spring 10. A hook part 33, on which the one end 12 of the torsion coil spring 10 is to be hooked, is structured of a groove hole communicated with the cylindrical hole part 31. COPYRIGHT: (C)2006,JPO&NCIPI
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