To provide a disk brake that comprises a planetary gear speed reduction mechanism that improves the engagement state of each gear at the time of operation.SOLUTION: An internal gear 84 of a planetary gear speed reduction mechanism 55 adopted in a disk brake comprises a cylindrical supporting part 112 rotatably supporting a sun gear 82, an annular wall part 111 opposed to a large gear 88 so as to be separated at a predetermined distance in the axial direction of the larger gear 88, and a reaction force receiving part 114 arranged so as to overlap with the large gear 88 as viewed from the radial direction of the large gear 88, and for receiving a reaction force associated with the rotation of the sun gear 82. Thereby, the engagement state of the planetary gear speed reduction mechanism 55 is improved, an adverse effect on performance, strength, operation noise, etc. related to the transmission of rotation torque is restrained, and its reliability can be enhanced.SELECTED DRAWING: Figure 5
【課題】作動時における、各歯車の噛み合い状態を良好にする遊星歯車減速機構を備えたディスクブレーキを提供する。【解決手段】ディスクブレーキに採用した遊星歯車減速機構55のインターナルギヤ84は、サンギヤ82を回転可能に支持する円筒状支持部112と、大歯車88の軸方向において大歯車88と所定距離離間して対向配置される円環状壁部111と、大歯車88の径方向からみて大歯車88と重なるように配置される、サンギヤ82の回転に伴う反力を受ける反力受け部114と、を有している。これにより、遊星歯車減速機構55の噛み合い状態が良好となり、回転トルクの伝達に係る性能、強度、作動音等への悪影響を抑え、その信頼性を向上させることができる。【選択図】図5
DISK BRAKE AND PLANETARY GEAR SPEED REDUCTION MECHANISM
ディスクブレーキ及び遊星歯車減速機構
2022-02-10
Patent
Electronic Resource
Japanese