公开(公告)号：US20200248829A1

公开(公告)日：2020-08-06

申请号：US16648763

申请日：2018-09-21

Applicant: ADVICS CO., LTD.

Inventor： Junichi FUKUDA ,  Koichi HASHIDA ,  Hidenori HAYAKAWA

IPC: F16K31/06 ,  F04B53/10

Abstract: A yoke is provided with a notch, notched from two points P1 and P2 on a circumference forming a sleeve-side insertion hole toward the outside of the circumference, the notch having a minimum distance between the points P1 and P2 as a width W and the distance from a straight line linking the points P1 and P2 in a direction orthogonal to the straight line as a length L. The width W of the notch is set on the basis of a target attraction force for attracting a plunger, the attraction force increasing with an increase in the width W, and the length L of the notch is greater than or equal to a prescribed length Ld where the attraction force increasing with an increase in the length L becomes constant at the target attraction force in the set width W irrespective of an increase in the length L.

公开(公告)号：US20150337868A1

公开(公告)日：2015-11-26

申请号：US14719989

申请日：2015-05-22

Applicant: ADVICS CO., LTD.

Inventor： Koichi HASHIDA

IPC: F15B1/02

CPC classification number: F15B1/021 ,  F04B11/00 ,  F04B11/0008 ,  F04B53/00 ,  F04B53/16 ,  F15B1/04 ,  F15B1/08 ,  F15B21/008 ,  F15B2201/22 ,  F16L55/04

Abstract: A hydraulic damper disposed in a discharge-side passage of a hydraulic pump comprises a bladder made of elastic material and formed into a cylindrical shape, a core, and a plug. The bladder includes a spherical closed end portion at its one end and an open end portion at its the other end. The open end portion includes an annular flange portion extending outwardly in the radial direction. The core includes an inserted portion to be inserted into the bladder and an annular flange portion extending outwardly in the radial direction so as to contact with an end face of the open end portion of the bladder. The inserted portion has a large-diameter portion, a small-diameter portion and a gradually-changing diameter portion formed between the large-diameter portion and the small-diameter portion and forming an air chamber in the bladder together with the small chamber.

Abstract translation: 设置在液压泵的排出侧通道中的液压阻尼器包括由弹性材料制成并形成为圆柱形的囊，芯和塞。 囊状物在其一端包括球形封闭端部，另一端具有开口端部。 开口端部包括沿径向向外延伸的环形凸缘部。 芯包括插入到囊中的插入部分和沿径向向外延伸的环形凸缘部分，以便与囊的开口端部分的端面相接触。 插入部分具有形成在大直径部分和小直径部分之间的大直径部分，小直径部分和逐渐变化的直径部分，并且与小室一起形成气囊中的空气室。