| 摘要 |
PURPOSE: A change gear sprocket is provided to handle the chain of a short chain pitch by arranging multiple change gear bodies in a group in which adjacent gear bodies are in contact with one another in the circumferential direction of a sprocket main body. CONSTITUTION: Multiple change gear bodies(120,130) comprise sprocket sawteeth. The multiple change gear bodies are mounted to be separated from multiple change gear mounting parts(112). The multiple change gear mounting parts are formed on the outer circumference of a sprocket main body(110) at regular pitches. The sprocket main body is formed in the shape of a circular outer circumference(114). The multiple change gear bodies are arranged in a group in which adjacent gear bodies are in contact with one another in the circumferential direction of the sprocket main body.
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