PROBLEM TO BE SOLVED: To make a total of discharge amounts of a plurality of pump mechanisms closer to a constant value.SOLUTION: A pump device comprises a plurality of pump mechanisms which suck/discharge a fluid by reciprocally moving a ball 84 within a cylinder hole 814, and a shape of a cam 57 is set in such a manner that a total of discharge amounts of the plurality of pump mechanisms becomes constant. An axial line of the cylinder hole 816 is deviated by ΔL relatively to an axial line of a drive shaft 54, such that a direction of a force acting from a side of the cam 57 onto the ball 84 is stabilized either at a front side or at a rear side of the dive shaft 54 in a direction of rotation. The ball 84 is reciprocally moved without being fluctuated and stably moved. Therefore, deviation between a property of an actual discharge amount for each pump mechanism and a target property is unlikely to occur, and the total of the discharge amounts of the plurality of pump mechanisms can be made closer to the constant value.SELECTED DRAWING: Figure 3
【課題】複数のポンプ機構の吐出量の合計がより一定に近づくようにする。【解決手段】ボール84がシリンダ孔814内で往復動して流体の吸入・吐出を行う複数のポンプ機構を備え、複数のポンプ機構の吐出量の合計が一定となるようにカム57の形状を設定する。また、シリンダ孔816の軸線を駆動軸54の軸線に対してΔLずらすことにより、カム57側からボール84に作用する力の向きは、駆動軸54の回転方向前方側または回転方向後方側のいずれかに安定し、ボール84は、揺動することなく往復動し、安定した動きになる。したがって、各ポンプ機構毎の実際の吐出量の特性と目標特性とのずれが発生しにくくなり、複数のポンプ機構の吐出量の合計をより一定に近づけることができる。【選択図】図3
PUMP DEVICE AND BRAKE DEVICE FOR VEHICLE WITH THE SAME
ポンプ装置およびこれを備えた車両用ブレーキ装置
2017-02-02
Patent
Electronic Resource
Japanese
PUMP DEVICE AND VEHICULAR BRAKE DEVICE INCLUDING THE SAME
European Patent Office | 2017
|PUMP DEVICE AND VEHICULAR BRAKE DEVICE INCLUDING THE SAME
European Patent Office | 2017
|