公开(公告)号：US20210404505A1

公开(公告)日：2021-12-30

申请号：US17363970

申请日：2021-06-30

Applicant: FUJIKIN INCORPORATED

Inventor： Tsutomu SHINOHARA ,  Tomohiro NAKATA ,  Takahiro MATUSDA ,  Kazunari WATANABE ,  Tomoki NAKADA ,  Yoshiaki WATANABE ,  Tomoko YUHARA ,  Kengo TSUJINO ,  Masanori UEBAYASHI

IPC: F16B39/01

Abstract: A bolt holding member is made of metal and holds a bolt in a fastened member. The bolt holding member includes: a main body portion that has a cylindrical shape; a first engaging piece that extends from the main body portion toward an inside of the main body portion at an incline relative to an axial direction of the main body portion; and a second engaging piece that extends from the main body portion toward an outside of the main body portion at an incline relative to the axial direction of the main body portion.

公开(公告)号：US20250129863A1

公开(公告)日：2025-04-24

申请号：US18718204

申请日：2023-02-21

Applicant: FUJIKIN INCORPORATED

Inventor： Tatsuhiko SATO ,  Nobuo NAKAMURA ,  Tomohiro NAKATA ,  Kengo TSUJINO

IPC: F16K31/122

Abstract: [Problem] To provide a valve device which can realize high flow rate control and high-speed response, and which is easy to manufacture. [Solution] A valve device comprising a valve body 2, a valve element 41 and a multi-stage cylinder actuator 60 for moving the valve element, wherein the multi-stage cylinder actuator 60 includes a casing 6 divided into an upper cylinder chamber 64 and a lower cylinder chamber 66, an upper piston 81 slidably arranged in an upper cylinder chamber 64, and a lower piston 83 having an operation shaft 83d for operating the valve element 41 and an abutment shaft 83a for contacting the upper piston 81, the upper piston 81 has an upper operation air passage 81b for supplying operation air, the lower piston 83 has a lower operation air passage 83b in communication with the upper operation air passage 81b at a contact portion with the upper piston 81, and an O-ring 92 is provided at the contact portion to prevent leakage of the operation air. [Selection diagram] FIG. 1

公开(公告)号：US20230332714A1

公开(公告)日：2023-10-19

申请号：US18245788

申请日：2021-09-29

Applicant: FUJIKIN INCORPORATED

Inventor： Kengo TSUJINO ,  Ryutaro TANNO ,  Hiroto SHIBATA ,  Akihiro HARADA ,  Tomohiro NAKATA ,  Tsutomu SHINOHARA

IPC: F16K37/00

CPC classification number: F16K37/0041

Abstract: Provided is a fluid control device that is compact and that enables data regarding an internal operation of the device to be acquired.
A fluid control device V is disposed in a flow path of a fluid and enables data regarding an internal operation to be acquired, the fluid control device including a sensor hood 44 to which one or more sensors M2 for detecting an operation in the fluid control device are attached; a valve body 1 connected to the sensor hood; a diaphragm 42 held below the sensor hood, inside the valve body; a cover portion 5 that covers the outer periphery of the sensor hood; and a circuit board 60 that is electrically connected to the sensor(s) and for which a thickness direction of the circuit board and a flow path direction are arranged in the same direction on the inside of the cover portion.

公开(公告)号：US20250060049A1

公开(公告)日：2025-02-20

申请号：US18718595

申请日：2023-02-06

Applicant: FUJIKIN INCORPORATED

Inventor： Nobuo NAKAMURA ,  Tatsuhiko SATO ,  Tomohiro NAKATA ,  Kengo TSUJINO

IPC: F16K31/122 ,  F16K31/42 ,  H01L21/67

Abstract: [Problem] To provide a valve device in which valve opening time and valve closing time are adjustable to be close to each other.
[Solution] The valve device comprises: a valve body defining a flow path; a diaphragm 4 as a valve element for opening and closing the flow path; a stem 7 for making the diaphragm 4 separate and seat on a valve seat 3; a coil spring 15 as a spring member for constantly biasing the stem 7 in a valve-closing direction; a piston 30,36 connected to the stem 7; and an actuator body 20 for slidably accommodating the piston 30,36, wherein the inside of the actuator body 20 is partitioned by the piston 30,36 into a pressure chamber 31,37 to which a driving gas DG is supplied and an atmospheric chamber 32,38 communicating with the atmosphere via vent holes 21a, 21b formed in the actuator body 20, and the actuator body 20 includes an adjustment mechanism 50 capable of restricting the ventilation amounts of the vent holes 21a, 21b so as to adjust a valve closing time required for valve closing and a valve opening time required for valve opening to be equal to each other.

公开(公告)号：US20230136072A1

公开(公告)日：2023-05-04

申请号：US17935670

申请日：2022-09-27

Applicant: Fujikin Incorporated

Inventor： Kengo TSUJINO ,  Tomoki NAKADA ,  Ryutaro TANNO ,  Yuya SUZUKI ,  Akihiro HARADA ,  Tsutomu SHINOHARA

IPC: F16K31/126 ,  F16K27/02

Abstract: A valve which can accurately detect an operation of the valve is provided.
The valve includes a valve body defining a fluid flow passage, a valve disk operating to be able to open and close the fluid flow passage, an actuator driving the valve disk by supplying or interrupting a working fluid, a stem transmitting a driving force of the actuator to the valve disk, a detection means detecting an opening and closing operation of the valve disk, and an elastic member fixing a ring-shaped magnetic body inserted through an end of the stem to the stem. The detection means includes the magnetic body fixed by the elastic member, and a magnetic sensor detecting a change in a magnetic field of the magnetic body.