公开(公告)号：US20180306368A1

公开(公告)日：2018-10-25

申请号：US15576713

申请日：2016-05-11

Applicant: FUJIKOKI CORPORATION ,  DENSO CORPORATION

Inventor： Shin YOSHIDA ,  Takao OKADA ,  Makoto SUDO ,  Osamu HISHINUMA ,  Hiroatsu YAMADA

IPC: F16L55/053 ,  F02M37/00

CPC classification number: F16L55/053 ,  F02M37/0041 ,  F02M51/00 ,  F02M55/00 ,  F02M55/04 ,  F02M59/26 ,  F02M59/36 ,  F02M59/44 ,  F02M59/447 ,  F02M59/46 ,  F02M2200/315 ,  F16J3/02

Abstract: A pulsation damper includes an upper diaphragm, a lower diaphragm configured to form a sealed space having a predetermined pressure with the upper diaphragm, in which an inert gas is filled; and a deformation suppressing member formed of an elastic material, and comprising an inner cylindrical portion, and an extension portion extending from a center portion on an outer peripheral surface of the inner cylindrical portion such that the extension portion extends outward from a center axis of the inner cylindrical portion, wherein the deformation suppressing member is arranged inside the sealed space such that an outer periphery of the extension portion abuts against inner walls of the upper diaphragm and the lower diaphragm.

公开(公告)号：US20170335810A1

公开(公告)日：2017-11-23

申请号：US15533209

申请日：2015-11-24

Applicant: FUJIKOKI CORPORATION ,  DENSO CORPORATION

Inventor： Masahiro TOMITSUKA ,  Shin YOSHIDA ,  Makoto SUDO ,  Akinori NANBU ,  Osamu HISHINUMA ,  Hiroatsu YAMADA

IPC: F02M37/00

CPC classification number: F02M37/0041 ,  F02M59/36 ,  F02M59/44

Abstract: A diaphragm includes a flange and a protrusion provided to protrude to one side of the flange, wherein the protrusion has at least two annular curved portions provided annularly on a ceiling portion having a flat surface-like shape and an outer side in a radial direction of the ceiling portion, in a state where pressure on an outer wall side of the protrusion and pressure on an inner wall side of the protrusion are the same, the at least two annular curved portions are each formed to be curved in a cross-section of the diaphragm obtained by cutting the diaphragm by a virtual plane including a center line of the diaphragm, the centers of curvature of the curved portions being arranged at different positions on a side opposite to a protruding direction of the protrusion, and the diaphragm is formed of a sheet metal.

公开(公告)号：US20180223782A1

公开(公告)日：2018-08-09

申请号：US15748440

申请日：2016-07-28

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  DENSO CORPORATION ,  EAGLE INDUSTRY CO., LTD.

Inventor： Takeyuki YABUUCHI ,  Shinichi SUGIMOTO ,  Osamu HISHINUMA ,  Hiroatsu YAMADA ,  Toshiaki IWA ,  Yoshihiro OGAWA ,  Yusuke SATO

IPC: F02M55/04 ,  F04B11/00

CPC classification number: F02M55/04 ,  F02M37/0041 ,  F02M2200/26 ,  F02M2200/315 ,  F04B11/0016

Abstract: A damper device is provided in a flow passage of a fluid. The damper device includes a plurality of diaphragm dampers that are stacked together. Each of the plurality of diaphragm dampers includes a first flexible portion, a second flexible portion, and a rim including a welded portion. A peripheral edge of the first flexible portion and a peripheral edge of the second flexible portion are welded together in the welded portion. Each of the plurality of diaphragm dampers is configured to seal a gas in an inner region between the first flexible portion and the second flexible portion. A coupler that couples the plurality of diaphragm dampers together includes holders that hold the rims of the plurality of diaphragm dampers. A gap is provided between the holder of the coupler and the welded portion of each of the plurality of diaphragm dampers.

公开(公告)号：US20150017040A1

公开(公告)日：2015-01-15

申请号：US14322067

申请日：2014-07-02

Applicant: DENSO CORPORATION

Inventor： Osamu HISHINUMA ,  Noriya MATSUMOTO ,  Hiroatsu YAMADA

IPC: F04B11/00 ,  F02M59/02

CPC classification number: F02M59/02 ,  F02M55/04 ,  F02M59/367 ,  F02M59/44 ,  F04B11/0033

Abstract: A pulsation dumper configured to reduce a fuel pressure pulsation of fuel flowing in a fuel chamber includes a sealed space in which gas having a predetermined pressure is encapsulated between a first diaphragm and a second diaphragm configured to be resiliently deformable by a fuel pressure pulsation in the fuel chamber. A first resilient member provided in the sealed space abuts against an inner wall of the first diaphragm, and a second resilient member abuts against an inner wall of a second diaphragm. A supporting member provided between the first resilient member and the second resilient member supports an outer peripheral portion of the first resilient member and an outer peripheral portion of the second resilient member. A resonance of first and second diaphragms is restrained by the first and second resilient members. The first and second resilient members do not impair deformation of center portions of the first and second diaphragms.

Abstract translation: 构造成减少在燃料室中流动的燃料的燃料压力脉动的脉动转储器包括密封空间，其中具有预定压力的气体被封装在第一膜片和第二膜片之间，该第一膜片和第二膜片被构造成可通过燃料压力脉动弹性变形 燃料舱。 设置在密封空间中的第一弹性构件邻接第一隔膜的内壁，第二弹性构件抵靠第二隔膜的内壁。 设置在第一弹性构件和第二弹性构件之间的支撑构件支撑第一弹性构件的外周部分和第二弹性构件的外周部分。 第一和第二隔膜的共振被第一和第二弹性构件约束。 第一和第二弹性构件不会损害第一和第二隔膜的中心部分的变形。