JPS6456533U

JPS6456533U -

Info

Publication number: JPS6456533U
Application number: JP15170587U
Authority: JP
Priority date: 1987-10-05
Filing date: 1987-10-05
Publication date: 1989-04-07

Description

[Brief explanation of the drawing]

第１図はこの考案の一実施例を示すバイパスリ
リーフ弁の断面図、第２図はこの考案の他の実施
例を示すバイパスリリーフ弁の断面図、第３図は
過給機付内燃機関の構成図、第４図は従来のバイ
パスリリーフ弁を示す断面図である。図において、３は過給機、７はバイパス配管、
９はダイヤフラム、１０は第１の空気室、１１は
第２の空気室、１４はロツド、１６は弁体、１７
はフランジ、１８は弁体用スプリング、１９はロ
ツド用スプリング、２０はバイパスリリーフ弁、
２１は保護カバー、２２は弁体、２３は保護カバ
ーである。なお、各図中、同一符号は同一又は相
当部分を示す。 Fig. 1 is a sectional view of a bypass relief valve showing one embodiment of this invention, Fig. 2 is a sectional view of a bypass relief valve showing another embodiment of this invention, and Fig. 3 is a sectional view of a bypass relief valve showing another embodiment of this invention. The configuration diagram and FIG. 4 are cross-sectional views showing a conventional bypass relief valve. In the figure, 3 is a supercharger, 7 is a bypass pipe,
9 is a diaphragm, 10 is a first air chamber, 11 is a second air chamber, 14 is a rod, 16 is a valve body, 17
is a flange, 18 is a spring for the valve body, 19 is a spring for the rod, 20 is a bypass relief valve,
21 is a protective cover, 22 is a valve body, and 23 is a protective cover. In each figure, the same reference numerals indicate the same or equivalent parts.

補正昭６３．１．６実用新案登録請求の範囲を次のように補正する
。Amendment January 6, 1983 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】 (1) 吸気通路中の過給機の下流側と上流側とを
連通させるバイパス配管に設けられたバイパスリ
リーフ弁において、バルブ本体を第１の空気室と
第２の空気室とに画成するダイアフラムと、この
ダイアフラムに一端が取り付けられ前記第１の空
気室と前記第２の空気室との差圧により応動する
ダイアフラムに連動するロツドと、前記第１の空
気室内に設けられ前記ロツドを閉弁方向に押圧す
るロツド用スプリングと、前記ロツドに摺動自在
に設けられるとともにロツドの他端に形成された
フランジに係止される弁体と、この弁体に一端が
設けられ弁体を開弁方向に付勢する弁体用スプリ
ングと、前記弁体に設けられ前記弁体用スプリン
グに対するバツクフアイアの火炎を阻止する保護
カバーとを備えたことを特徴とするバイパスリリ
ーフ弁。 (2) 保護カバーは弁体の周縁部を弁体用スプリ
ング側に折り曲げてなる実用新案登録請求の範囲
第１項記載のバイパスリリーフ弁。[Claims for Utility Model Registration] (1) In a bypass relief valve provided in a bypass pipe that communicates the downstream side and upstream side of a supercharger in an intake passage, the valve body is connected to a first air chamber and a second air chamber. a diaphragm defining an air chamber; a rod having one end attached to the diaphragm and interlocking with the diaphragm that responds to a pressure difference between the first air chamber and the second air chamber; A rod spring provided in the chamber to press the rod in the valve closing direction; a valve body slidably provided on the rod and locked to a flange formed at the other end of the rod; A bypass characterized by comprising a valve body spring provided at one end and biasing the valve body in the valve opening direction, and a protective cover provided on the valve body and blocking flame of a backup fire against the valve body spring. relief valve. (2) The bypass relief valve according to claim 1, wherein the protective cover is formed by bending the peripheral edge of the valve element toward the valve spring side.

Claims

[Scope of Claim for Utility Model Registration] (1) In a bypass relief valve that is installed in the bypass piping that communicates the downstream and upstream sides of the supercharger in the intake passage and opens during idling and deceleration, the valve body is A diaphragm defining a first air chamber and a second air chamber, and a diaphragm having one end attached to the diaphragm and responsive to a pressure difference between the first air chamber and the second air chamber. a rod, a rod spring provided in the first air chamber to press the rod in the valve closing direction, and a rod spring provided slidably on the rod and latched to a flange formed at the other end of the rod. A valve body, a valve body spring having one end provided on the valve body and urging the valve body in a valve closing direction, and a protective cover provided on the valve body and preventing flames from a backup fire against the valve body spring. A bypass relief valve characterized by being equipped with. (2) The bypass relief valve according to claim 1, wherein the protective cover is formed by bending the peripheral edge of the valve element toward the valve spring side.