JPS62124223U

JPS62124223U -

Info

Publication number: JPS62124223U
Application number: JP1083586U
Authority: JP
Priority date: 1986-01-28
Filing date: 1986-01-28
Publication date: 1987-08-07

Description

[Brief explanation of the drawing]

第１図は本考案の実施例に係るダイヤフラム付
キヤツプの断面図、第２図は同ダイヤフラム付キ
ヤツプの加圧時に於ける断面状態図、第３図は同
ダイヤフラム付キヤツプの変形例を示す断面図、
第４図は従来におけるキヤツプの断面図である。１……弁保持体、２……組付部材、２Ａ……ボ
ルト部、２Ｂ……ナツト部、２Ｃ……連通孔、３
……蓋体、４……リテーナ、５……フイラネツク
、６……リング体、６Ａ……環状突状体、７……
ダイヤフラム、８……負圧用孔、９……加圧用孔
、１０……加圧用スプリング、１１……弁保持板
、１２……負圧保持体、１３……負圧弁、１４…
…ロツド部、１５……負圧用スプリング、１６…
…Ｏ―リング。 Fig. 1 is a cross-sectional view of a cap with a diaphragm according to an embodiment of the present invention, Fig. 2 is a cross-sectional view of the cap with a diaphragm when pressurized, and Fig. 3 is a cross-sectional view showing a modification of the cap with a diaphragm. figure,
FIG. 4 is a sectional view of a conventional cap. DESCRIPTION OF SYMBOLS 1... Valve holding body, 2... Assembly member, 2A... Bolt part, 2B... Nut part, 2C... Communication hole, 3
... Lid body, 4 ... Retainer, 5 ... Fillet neck, 6 ... Ring body, 6A ... Annular protruding body, 7 ...
Diaphragm, 8... Negative pressure hole, 9... Pressurizing hole, 10... Pressurizing spring, 11... Valve holding plate, 12... Negative pressure holding body, 13... Negative pressure valve, 14...
...Rod part, 15...Negative pressure spring, 16...
...O-ring.

Claims

[Scope of utility model registration request]

A retainer, a lid attached to the filler neck through the retainer, and a bell-shaped valve support provided in the center of the lid so as to open toward the inside of the tank are integrated via an assembly member. A pressurizing valve is attached to the valve support via a valve holding plate that is pressed by a pressurizing spring, and a negative pressure hole is provided in the center of the valve holding plate and the pressurizing valve to communicate the inner space of the valve support with the inside of the tank. A negative pressure holding body having a negative pressure valve that opens and closes a negative pressure hole and a rod part that is integrally provided with the negative pressure valve and that penetrates the negative pressure hole is connected to the valve holding plate and the protrusion of the rod part. The cap is attached to the pressurizing valve through a negative pressure spring that is provided between the valves and presses the negative pressure valve against the pressurizing valve.The assembly member consists of a bolt part and a nut part, and the bolt part A communication hole is provided to communicate the space with the atmosphere, an O-ring is provided between the retainer and the valve support, and a pressurizing spring that presses the pressurizing valve toward the inside of the tank is connected to the inner surface of the top of the valve support and the valve retaining plate. The pressurizing valve is constructed of a diaphragm provided with a pressurizing hole that communicates between the inner space of the valve support and the inside of the tank, as well as a negative pressure retainer, and this diaphragm is attached to one side of the valve with a pressurizing hole that communicates with the inside of the tank. A cap with a diaphragm, characterized in that it is attached to the inner side of the opening side of a valve support body via a ring body provided with an annular protrusion so as to be located on the rod side.