| 摘要 |
PROBLEM TO BE SOLVED: To provide a molded gear made of a synthetic resin capable of making a diameter difference of an outer diameter over a tooth width of a gear positioned at an inner side in the multi-step gear made of a synthetic resin small to the utmost and enhancing an accuracy of the gear. SOLUTION: Rims 11, 12 integrally formed with a plurality of tooth portions 14, 15 at an outer periphery is concentrically disposed making a boss 13 as a center. A cylinder portion 22 comprising an annular portion 23 connected to respective one ends 11a, 14a of the rim 11 and the tooth portion 14 and cylindrical portion 24 of which one end 24a is connected to an outer diameter portion of the annular portion 23 and the other end 24b is connected to an inner diameter portion of a web 17 concentrically extending from an inner portion of the rim 12 toward the inside is integrally formed between the rims 11, 12.
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