| 摘要 |
PROBLEM TO BE SOLVED: To provide a sprocket capable of preventing any contact or interference at one point with a driving projection by improving a structure of an engagement part of the sprocket to be engaged with the driving projection of a rubber crawler, enhancing the durability of the driving projection, and preventing any derailing and tooth skipping from easily occurring. SOLUTION: The sprocket 20 for the rubber crawler is engaged with driving projections 11 which are formed on an inner circumferential surface of a rubber crawler 10 at a predetermined pitch and triangular in side view. An engagement part 21 to be successively engaged with the driving projections 11 is formed on the sprocket. The engagement part 21 has a substantially isosceles-triangular shape consisting of isosceles-triangular sections 22a, 22b in surface contact with side faces 12a, 12b of the driving projection 11 and an apex having a curved surface on an outer side in the radial direction. COPYRIGHT: (C)2008,JPO&INPIT
|
