JPS5948654U

JPS5948654U - intake and exhaust valve

Info

Publication number: JPS5948654U
Application number: JP14553882U
Authority: JP
Inventors: 吉村　秀則
Original assignee: ミドリ安全工業株式会社
Priority date: 1982-09-24
Filing date: 1982-09-24
Publication date: 1984-03-31
Also published as: JPH0233789Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来の吸排気弁を呼吸マスク本体に取付けた状
態の断面図、第２図ないし第６図は本考案の実施例を示
すもので、第２図は吸排気弁全体の断面図、第３図は吸
排気弁体の断面図、第４図は吸排気弁における呼気と吸
気の気流の様子を示す斜視図、第５図は呼気が排気弁を
通る状態を示す一部断面図、第６図は吸気が吸気弁を通
る状態を示す一部断面図である。１・・・弁箱、２・・・小径の筒壁、３・・・大径の筒
壁、４・・・段壁、５・・・吸気流入口、６・・・蓋体
、１０・・・弁座、１１・・・環状フレーム、１７・・
・吸排気弁体、１８・・・排気弁、１゛９・・・連結片
、２０・・・リング、２１・・・鍔部、２２・・・吸気
弁。Figure 1 is a sectional view of a conventional intake and exhaust valve attached to the respiratory mask body, Figures 2 to 6 show embodiments of the present invention, and Figure 2 is a sectional view of the entire intake and exhaust valve. , Fig. 3 is a sectional view of the intake/exhaust valve body, Fig. 4 is a perspective view showing the state of expiration and intake airflow in the intake/exhaust valve, and Fig. 5 is a partial sectional view showing the state of exhaled air passing through the exhaust valve. , FIG. 6 is a partial sectional view showing the state in which intake air passes through the intake valve. DESCRIPTION OF SYMBOLS 1... Valve box, 2... Small diameter cylindrical wall, 3... Large diameter cylindrical wall, 4... Step wall, 5... Intake inlet, 6... Lid body, 10... ...Valve seat, 11...Annular frame, 17...
- Intake and exhaust valve body, 18...Exhaust valve, 1゛9...Connecting piece, 20...Ring, 21...Flame, 22...Intake valve.

Claims

[Scope of utility model registration request]

(1) The rear end of the small-diameter cylindrical wall and the tip of the large-diameter cylindrical wall are connected by a stepped wall, and the stepped wall is connected to the valve box body, which is provided with an intake inlet, and the respiratory mask body. A lid body having a connecting port and attached to cover the rear end opening of the large diameter cylinder wall, and a top end surface of an annular frame located at the rear end opening of the small diameter cylinder wall. An intake/exhaust valve comprising: a valve seat; an exhaust valve supported so as to be in pressure contact with the valve seat; and an intake valve supported so as to be in pressure contact with the intake inlet from the inside thereof.

(2) One end of a plurality of elastic connecting pieces bent in a dogleg shape is connected to various points at intervals around the periphery of the exhaust valve,
The other end of each of the above connecting pieces is connected to a ring attached to the outer wall of the annular frame, and the exhaust valve is supported so as to be in pressure contact with the valve seat, and the exhaust valve is supported so as to be in pressure contact with the valve seat, and the rear end of the small diameter cylinder wall is reached from the outer periphery of the ring. An intake valve that closes the intake inlet is provided on the periphery of a flange provided on the annular frame, and the flange provided on the rear end of the annular frame presses the flange against the rear end surfaces of the small diameter cylindrical wall to open the intake valve. An intake/exhaust valve according to claim 1, which is supported so as to be in pressure contact with an inlet.

(3) The intake and exhaust valve according to claim 2, wherein the exhaust valve, the connecting piece, the ring, the flange, and the intake valve are integrally molded from a resilient material such as a rubber material.