JPS63198488U

JPS63198488U -

Info

Publication number: JPS63198488U
Application number: JP8936487U
Authority: JP
Priority date: 1987-06-10
Filing date: 1987-06-10
Publication date: 1988-12-21
Also published as: JPH0422069Y2

Description

[Brief explanation of the drawing]

第１図は本考案の要部拡大断面図、第２図乃至
第４図はダイヤフラム装着に関する要部拡大断面
図、第５図は一般的なダイヤフラムエアーポンプ
の要部断面図、第６図及び第７図は従来例の要部
拡大断面図である。１……ダイヤフラム、１Ａ，１Ｂ……環状突起
、１Ｃ……環状凹溝、２……ダイヤフラム取付台
、２Ａ，２Ｂ……環状凹溝、２Ｃ……内周面、３
……ケーシング、３Ａ……ダイヤフラム接触部、
３Ｂ……押圧突起、３Ｃ……押圧面。 Fig. 1 is an enlarged sectional view of the main parts of the present invention, Figs. 2 to 4 are enlarged sectional views of the main parts related to diaphragm installation, Fig. 5 is a sectional view of the main parts of a general diaphragm air pump, and Figs. FIG. 7 is an enlarged sectional view of a main part of a conventional example. 1... Diaphragm, 1A, 1B... Annular projection, 1C... Annular groove, 2... Diaphragm mounting base, 2A, 2B... Annular groove, 2C... Inner peripheral surface, 3
...Casing, 3A...Diaphragm contact part,
3B...Press projection, 3C...Press surface.

補正昭６３．１．２６実用新案登録請求の範囲を次のように補正する
。Amendment January 26, 1983 The scope of claims for utility model registration is amended as follows.

【実用新案登録請求の範囲】ダイヤフラム１の片面の外周部位置に２個の
環状突起１Ａ，１Ｂを同芯円状に一体に突出連設
し、前記ダイヤフラム１の環状凹溝１Ｃ部の肉厚
ｔがダイヤフラム１の肉厚Ｔよりも小さくなるよ
うに形成し、ダイヤフラム取付台２側に内径が小
なる環状突起１Ａ，１Ｂが嵌合可能で自由状態に
おける該環状突起１Ａ，１Ｂの内径ｄ１，ｄ２よ
りもやや大なる内径Ｄ１，Ｄ２の環状凹溝２Ａ，
２Ｂを形成し、ケーシング３のダイヤフラム接触
部３Ａの形状をダイヤフラム１に対し、前記ダイ
ヤフラム取付台２の内周面２Ｃと対称又はほぼ対
称とした押圧突起３Ｂを設けたことを特徴とする
エアーポンプのダイヤフラム拡張保持装置。前記ケーシング３の押圧面３Ｃに、すべり止
め用の面荒しを施してある実用新案登録請求の範
囲第項に記載のエアーポンプのダイヤフラム拡
張保持装置。[Claims for Utility Model Registration] Two annular protrusions 1A and 1B are concentrically protruded from the outer periphery of one side of the diaphragm 1, and the wall thickness of the annular groove 1C of the diaphragm 1 is t is smaller than the wall thickness T of the diaphragm 1, and the annular protrusions 1A and 1B having a small inner diameter can be fitted on the diaphragm mounting base 2 side, and the inner diameter d1 of the annular protrusions 1A and 1B in a free state is Annular grooves 2A with inner diameters D1 and D2 slightly larger than d2,
2B, and the shape of the diaphragm contact portion 3A of the casing 3 is symmetrical or almost symmetrical to the inner circumferential surface 2C of the diaphragm mounting base 2 with respect to the diaphragm 1. diaphragm expansion retention device. The air pump diaphragm expansion and holding device according to claim 1, wherein the pressing surface 3C of the casing 3 is roughened to prevent slipping.

Claims

[Claims for Utility Model Registration] Two annular protrusions 1A and 1B are concentrically protruded from the outer periphery of one side of the diaphragm 1, and the wall thickness of the annular groove 1C of the diaphragm 1 is t is smaller than the wall thickness T of the diaphragm 1, and the annular protrusions 1A and 1B with small inner diameters can be fitted on the diaphragm mounting base 2 side, and the inner diameters d1 of the annular protrusions 1A and 1B in a free state, Annular grooves 2A with inner diameters D1 and D2 slightly larger than d2,
2B, and a pressing protrusion 3B is provided in which the shape of the diaphragm contact portion 3A of the casing 3 is symmetrical or almost symmetrical to the inner circumferential surface 2C of the diaphragm mounting base 2 with respect to the diaphragm 1. diaphragm expansion retention device. The air pump diaphragm expansion and holding device according to claim 1, wherein the pressing surface 3C of the casing 3 is roughened to prevent slipping.