JPS58153851U - Valve device for dust mask - Google Patents

Valve device for dust mask

Info

Publication number
JPS58153851U
JPS58153851U JP5224482U JP5224482U JPS58153851U JP S58153851 U JPS58153851 U JP S58153851U JP 5224482 U JP5224482 U JP 5224482U JP 5224482 U JP5224482 U JP 5224482U JP S58153851 U JPS58153851 U JP S58153851U
Authority
JP
Japan
Prior art keywords
valve
valve seat
valve device
dust mask
air flow
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5224482U
Other languages
Japanese (ja)
Inventor
健治 山本
Original Assignee
山本光学株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 山本光学株式会社 filed Critical 山本光学株式会社
Priority to JP5224482U priority Critical patent/JPS58153851U/en
Publication of JPS58153851U publication Critical patent/JPS58153851U/en
Pending legal-status Critical Current

Links

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

【図面の簡単な説明】[Brief explanation of drawings]

第１図乃至第４図は本考案の実施例を示しており、第１
図は防塵マスクの正面図、第２図は第１図の■−■線断
面図、第３図は排気弁装置の分解−斜視図、第４図は弁
装置の要部の縦断面図、第５図は弁装置の第２実施例の
要部の縦断面図である。　　１・・・・・・防塵マスク
、２・・・・・・マスク本体、１４・・・・・・排気弁
装置、１７・・・・・・弁本体；１８・・・・・・弁部
材、２５・・・・・・排気用空気流通口、２６・・・・
・・弁座、２９・・・・・・弁部、３７・・・・・・周
縁部、３８・・・・・・接当面。1 to 4 show embodiments of the present invention, and the first
The figure is a front view of the dust mask, Figure 2 is a sectional view taken along the line ■-■ in Figure 1, Figure 3 is an exploded perspective view of the exhaust valve device, and Figure 4 is a longitudinal sectional view of the main parts of the valve device. FIG. 5 is a longitudinal sectional view of the main parts of the second embodiment of the valve device. 1...dust mask, 2...mask body, 14...exhaust valve device, 17...valve body; 18...valve member , 25... Exhaust air vent, 26...
... Valve seat, 29 ... Valve part, 37 ... Peripheral part, 38 ... Contact surface.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 空気流通口２５と弁座２８とを有する弁本体１７に、そ
の周縁部３７が弁座２６に接離自在に接当して空気流通
口２５を開閉する弾性材製弁部材１８を設けた防塵マス
ク用弁装置において、前記弁部材１８の周縁部３７の弁
座接当面３８は、径方向断面形状が弁座２６側に突状の
円弧面に形成されていることを特徴とする防塵マスク用
弁装置。A dustproof valve body 17 having an air flow port 25 and a valve seat 28 is provided with a valve member 18 made of an elastic material that opens and closes the air flow port 25 by having its peripheral edge 37 contact the valve seat 26 so as to be able to freely move toward and away from the valve seat 26. In the valve device for a dust mask, the valve seat abutting surface 38 of the peripheral edge portion 37 of the valve member 18 has a radial cross-sectional shape formed into an arcuate surface projecting toward the valve seat 26 side. Valve device.
JP5224482U 1982-04-08 1982-04-08 Valve device for dust mask Pending JPS58153851U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5224482U JPS58153851U (en) 1982-04-08 1982-04-08 Valve device for dust mask

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5224482U JPS58153851U (en) 1982-04-08 1982-04-08 Valve device for dust mask

Publications (1)

Publication Number Publication Date
JPS58153851U true JPS58153851U (en) 1983-10-14

Family

ID=30062955

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5224482U Pending JPS58153851U (en) 1982-04-08 1982-04-08 Valve device for dust mask

Country Status (1)

Country Link
JP (1) JPS58153851U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007529254A (en) * 2004-03-19 2007-10-25 スコット ヘルス アンド セイフティー エルティーディー Respiratory protective equipment

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5415122A (en) * 1977-07-06 1979-02-03 Hitachi Ltd Speed control circuit for dc servo-motors
JPS5436626A (en) * 1977-08-25 1979-03-17 Schmelzer Corp Valve

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5415122A (en) * 1977-07-06 1979-02-03 Hitachi Ltd Speed control circuit for dc servo-motors
JPS5436626A (en) * 1977-08-25 1979-03-17 Schmelzer Corp Valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007529254A (en) * 2004-03-19 2007-10-25 スコット ヘルス アンド セイフティー エルティーディー Respiratory protective equipment

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