To provide a pump device which attenuates pulsation of a brake fluid generated when a pump is driven.SOLUTION: A pump device includes a pulsation reduction part (80) that is provided in a base (51) and reduces pulsation of a brake fluid discharged from a pump (60). The pulsation reduction part (80) has a storage chamber (58) provided in the base (51), cushion members (83 and 831) arranged on a bottom part (58a) of the storage chamber (58), movable discs (84 and 841) that have through holes for passing the brake fluid, and are guided to an inner peripheral surface (58b) of the storage chamber (58) and are slidable in an axial (Axc) direction of the storage chamber (58), an energization member (85) for energizing the movable disks (84 and 841) to the side of the bottom part (58a) of the storage chamber (58), a fixed disc (86) that has a through hole (84b) for passing the brake fluid and is fixed to the side of the opening (58e) side of the storage chamber of the movable discs (84 and 841), and a lid part (82) for blocking the opening of the storage chamber.SELECTED DRAWING: Figure 3
【課題】 ポンプの駆動時に発生するブレーキ液の脈動を減衰させるポンプ装置に関する。【解決手段】 基体内(51)に設けられ、ポンプ(60)から吐出されるブレーキ液の脈動を低減する脈動低減部(80)を備えるポンプ装置において、脈動低減部(80)は、基体(51)に設けられる収容室(58)と、収容室(58)の底部(58a)に配置されるクッション部材(83、831)と、ブレーキ液が通過する貫通孔を有し、収容室(58)の内周面(58b)にガイドされ収容室(58)の軸(Axc)方向に摺動可能な可動ディスク(84、841)と、可動ディスク(84、841)を収容室(58)の底部(58a)側へ付勢する付勢部材(85)と、ブレーキ液が通過する貫通孔(84b)を有し、可動ディスク(84、841)より収容室の開口部(58e)側に固定される固定ディスク(86)と、収容室の開口部を塞ぐ蓋部(82)と、を含む。【選択図】 図3
PUMP DEVICE
ポンプ装置
2021-06-17
Patent
Elektronische Ressource
Japanisch