| 摘要 |
PROBLEM TO BE SOLVED: To provide a device having durability, oil resistance and capable of withstanding a high-load at the time of eliminating vibration of a core of a gear. SOLUTION: A loose fitting part 10 is provided at an intermediate part between a core part 7 and a toothed wheel 6 of a gear, and a circular arc-like recessed part 9 is provided in the loose fitting part 10 in both sides of the core side 9' and the toothed wheel side 9 so that an outer peripheral surface of a spiral coil spring 3 spirally formed between the circular arcs is fitted in the recessed part 9. With this structure, since the spiral spring 3 supports a load at a right angle against the core at multiple points and the load is divided so as to be evenly distributed in a gear surface, a device such as a reduction gear capable of withstanding a high load is easily manufactured, and oil resistance and durability are also provided. |
