To reduce manufacturing costs and increase strength of a whole idler.SOLUTION: An idler 21 includes: an idler body 23 provided with a cylindrical hub 24 and right and left annular plates 25, 26; right and left link contact surfaces 27, 28; and an annular flange 29. The annular flange 29 includes right and left flange side surfaces 29A, 29B and a flange outer surface 29C. Right and left link contact surface hard layers 30, 31 are formed on the surfaces of the right and left link contact surfaces 27, 28. Right and left flange side surface hard layers 32, 33 are formed on the surfaces of the right and left flange side surfaces 29A, 29B of the annular flange 29. Right and left annular plate hard layers 34, 35 are formed on the surfaces of right and left annular plate large-diameter portions 25A, 26A of the right and left annular plates 25, 26 of the idler body 23, which are located adjacent to the right and left link contact surface 27, 28.SELECTED DRAWING: Figure 4
【課題】製造コストを抑えつつアイドラ全体の強度を高める。【解決手段】アイドラ21は、円筒状のハブ24と左,右の円板部25,26とを有するアイドラ本体23と、左,右のリンク当接面27,28と、環状鍔部29とを備え、環状鍔部29は、左,右の鍔部側面29A,29Bと、鍔部外周面29Cとを有している。左,右のリンク当接面27,28の表面には左,右のリンク当接面硬化層30,31が形成され、環状鍔部29の左,右の鍔部側面29A,29Bの表面には左,右の鍔部側面硬化層32,33が形成され、アイドラ本体23の左,右の円板部25,26のうち左,右のリンク当接面27,28と隣接する左,右の円板大径部25A,26Aの表面には左,右の円板部硬化層34,35が形成されている。【選択図】図4
IDLER AND CRAWLER RUNNING DEVICE WITH IDLER
アイドラおよびアイドラを備えた履帯式走行装置
2019-04-11
Patent
Electronic Resource
Japanese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |