PROBLEM TO BE SOLVED: To provide a soil adhesion preventing tool of a rotary tiller effectively preventing adhesion of soil to a rotary driven part such as a rotating shaft, a claw mounting part, plowing claws rotary driven with the rotating shaft S, in order to keep a good rotary plowing performance.SOLUTION: The soil adhesion preventing tool of a rotary tiller includes a cylindrical body 1 which covers the circumference of a rotary shaft S in the condition that it can move freely. The cylindrical body 1 includes a beltlike circumference belt which goes around with a predetermined circumference length with a gap on the surface of the rotary shaft S, and moreover is such that two or more end elastic pieces 2 which turn to the tube end side are formed by two or more incision parts 20 prepared along the tube end near the tube end of the cylindrical body 1. The cylindrical body 1 rotates around the rotary shaft S with the rotation of the rotary shaft S moving freely, the end elastic pieces 2 carry out elastic deformation in contact with a stepped part or a projection part of a claw mounting part H with the rotation of the rotary shaft S, and thereby the adhesion of clod to the rotary shaft S, the claw mounting part H, or to a tilling tine B is inhibited.COPYRIGHT: (C)2012,JPO&INPIT【課題】良好なロータリ耕耘性能を維持するために、回転軸S、並びに爪取付け部や耕耘爪など、回転軸Sと共に駆動する回転駆動部への着土を効率的に防止しうるロータリ耕耘機の着土防止具を提供する。【解決手段】回転軸Sの周囲を、遊動可能な状態で覆う筒状体1からなる。前記筒状体1は、回転軸Sの表面に隙間を有した所定の周回長をもって周回する帯状の周回ベルトからなり、また前記筒状体1の筒端付近には、筒端に沿って設けた複数の切込み部20によって、筒端側を向いた端部弾性片2が複数形成されてなり、筒状体1が、回転軸Sの回転に伴って回転軸Sの周囲を遊動しながら回転し、前記端部弾性片2が、回転軸Sの回転に伴って爪取付け部Hの段差部或いは突出部に接して弾性変形することで、回転軸S、爪取付け部H、又は耕耘爪Bへの土塊の付着を防止する。【選択図】 図8
