Variable displacement axial piston device
    4.
    发明公开
    Variable displacement axial piston device 有权
    可变排量轴向活塞装置

    公开(公告)号:EP2735737A1

    公开(公告)日:2014-05-28

    申请号:EP13193587.6

    申请日:2013-11-20

    IPC分类号: F04B1/20

    摘要: Variable displacement axial piston device having a rotating cylinder block (120)comprises a trunnion type movable swash plate (150) supported in a rotatably sliding manner by a bearing portion (205). With the aim of reducing the rotating frictional resistance in said bearing portion (205) two embodiments of swash plate (150) are presented. In a first embodiment an outer circumferential surface of a trunnion shaft (160) includes at least one suction groove (162) that forms a pocket portion (162a) between the suction groove (162) and the inner surface of the bearing portion (205). The pocket portion (162a) is opened to an inner space of housing on at least one side in an axis line direction of the trunnion shaft (160). In a second embodiment an outer circumferential surface of the trunnion shaft (160) includes a large diameter portion (165) at a middle part, an outer side small diameter portion (166a) and an inner side small diameter portion (166b).

    摘要翻译: 具有旋转缸体(120)的可变排量轴向活塞装置包括由轴承部分(205)以可旋转滑动的方式支撑的耳轴型可移动斜盘(150)。 为了减小所述轴承部分(205)中的旋转摩擦阻力,提供了旋转斜盘(150)的两个实施例。 在第一实施例中,耳轴160的外周表面包括在吸入槽162与轴承部分205的内表面之间形成袋部162a的至少一个吸入槽162, 。 袋部(162a)在耳轴(160)的轴线方向的至少一侧向壳体的内部空间开口。 在第二实施例中,耳轴的外圆周表面包括在中部的大直径部分,外侧小直径部分和内侧小直径部分。