PROBLEM TO BE SOLVED: To provide a chain guide structure of a chain drive type power transmission mechanism which can protect an engine case by absorbing an impact by the deformation of the chain guide even if a strong impact load is applied on the chain guide due to the caught-in of a solid product, and quickly eliminating small stones or the like.SOLUTION: In a chain guide structure of a chain drive type power transmission mechanism, a chain guide (30) which is fastened to an engine case (11) is arranged so as to circularly cover a drive chain (24) which is wound to a drive sprocket (23) at a part of a periphery of the drive sprocket (23), and in the chain guide (30), a fragile part (B) which is more lowered in rigidity than other region is formed in the upper vicinity of a front end region (31f) which is the most approximate to the drive chain (24).
【課題】固形物の噛み込みによりチェーンガイドに強い衝撃荷重が加わっても、チェーンガイドが変形し衝撃を吸収して速やかに小石等を排除して機関ケースを保護することができるチェーンドライブ式動力伝達機構のチェーンガイド構造を供する。【解決手段】機関ケース(11)に締結されたチェーンガイド(30)が、駆動スプロケット(23)に巻き掛けられた駆動チェーン(24)を、駆動スプロケット(23)の周囲の一部で円弧状に覆うように設けられ、チェーンガイド(30)は、駆動チェーン(24)に最も近接した前端部位(31f)の上方近傍に他の部位より強度を低くした脆弱部(B)が形成されるチェーンドライブ式動力伝達機構のチェーンガイド構造。【選択図】図5
CHAIN GUIDE STRUCTURE OF CHAIN DRIVE TYPE POWER TRANSMISSION MECHANISM
チェーンドライブ式動力伝達機構のチェーンガイド構造
2015-09-28
Patent
Elektronische Ressource
Japanisch
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