| 摘要 |
PURPOSE: A noise reducing structure for a timing chain is provided to expand a supporting portion between a guide and a chain and to reduce noise by constraining flow between a guide and a bolt. CONSTITUTION: A noise reducing structure for a timing chain has a crown shape portion(C). The timing chain transfers power of an engine by a sprocket connecting to a crank shaft. A fixing hole is formed to fix a guide(10) to a cylinder block portion by a bolt(10'). The guide minimizes noise and vibration. A supporting portion(L) is formed to support a specific section along the chain. A washer(10") is intervened to prevent flowing by difference of diameters(D,d) with the bolt. The crown shape portion is protruded to both sides of the supporting portion. Thereby, an extended supporting portion(L') is formed. Therefore, noise of transferring power of the chain is prevented by extending the supporting portion.
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