JPH0420115U

JPH0420115U -

Info

Publication number: JPH0420115U
Application number: JP5872190U
Authority: JP
Priority date: 1990-06-02
Filing date: 1990-06-02
Publication date: 1992-02-20

Description

[Brief explanation of drawings]

図は本考案の一実施例を示すものにして、第１
図は本考案に係る減圧弁の断面図、第２図は同上
主要部の分解斜視図、第３図は同上弁口部分の拡
大断面図、第４図は調整バネの断面図、第５図は
従来の減圧弁の断面図、第６図は第５図のＡ−Ａ
端面図である。４……一次側圧力室、６……二次側圧力室、１
５……弁口、１７……弁棒、１８……バネカバー
、２０……弁体、２８……ダイヤフラム、３１…
…ネジ部、３２……ナツト部材、３３……支持面
、３６……ネジ部、３７……嵌合凹部、３８……
テーパー面、３９……下部バネ受、４０……調整
バネ、４３……ネジ部、４４……上部バネ受、４
５……バネ体、４６……調整ボルト。 The figure shows one embodiment of the present invention.
The figure is a sectional view of the pressure reducing valve according to the present invention, FIG. 2 is an exploded perspective view of the main parts of the above, FIG. 3 is an enlarged sectional view of the valve opening, FIG. 4 is a sectional view of the adjustment spring, and FIG. is a cross-sectional view of a conventional pressure reducing valve, and FIG. 6 is taken along A-A in FIG.
FIG. 4...Primary side pressure chamber, 6...Secondary side pressure chamber, 1
5... Valve port, 17... Valve stem, 18... Spring cover, 20... Valve body, 28... Diaphragm, 31...
...Threaded portion, 32... Nut member, 33... Support surface, 36... Threaded portion, 37... Fitting recess, 38...
Tapered surface, 39...Lower spring holder, 40...Adjustment spring, 43...Threaded portion, 44...Upper spring holder, 4
5...Spring body, 46...Adjustment bolt.

補正平２．７．２１図面の簡単な説明を次のように補正する。明細書中第１４頁第１４行目に「１８……バネ
カバー」とあるを、「１８……弁体カバー」と補
正する。Amendment 2.7.21 The brief description of the drawing is amended as follows. In the 14th line of page 14 of the specification, the phrase "18...spring cover" is corrected to "18...valve body cover."

Claims

[Scope of utility model registration request]

A pressure reducing valve in which the opening and closing of a valve port that communicates between a primary pressure chamber and a secondary pressure chamber is controlled by a valve body attached to the lower end of a valve rod via a diaphragm that responds to pressure changes in the secondary pressure chamber. A polygonal nut member is screwed onto the threaded part at the upper end of the rod to mount the diaphragm, and when the diaphragm is mounted, the substantially spherical support surface at the upper end of the threaded part protrudes from the nut member. At the same time as forming a threaded portion, a fitting recess with a slightly larger diameter than the nut member is carved in the center of the lower surface, and a lower spring holder having a tapered upper surface of the fitting recess is screwed onto one end of the adjustment spring. With,
A spring body is constructed by screwing an upper spring holder that forms a threaded portion in the center of the lower surface to the other end of the adjustment spring, and the support surface of the valve stem is brought into contact with the tapered surface of the lower spring holder of the spring body. A pressure reducing valve characterized in that a nut member is fitted into a fitting recess, and an adjustment bolt rotatably supported by a spring cover is screwed into an upper spring receiver.