JPS59195249U

JPS59195249U - bellows

Info

Publication number: JPS59195249U
Application number: JP1983089116U
Authority: JP
Inventors: 田井　英二
Original assignee: エヌオーケー株式会社
Priority date: 1983-06-13
Filing date: 1983-06-13
Publication date: 1984-12-25

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 drawings]

第１図は従来のベローズを使用したベローズポンプの要
部断面図、第２図および第３図は従来のベローズの半裁
断面図、第４図は本考案の一実施例に係るベローズの半
裁断面図である。１、　２．　３・・・ハウジング、４・・・ダイアフラ
ム、５・・・ベローズ、５ａ・・・蛇腹、５ｂ・・・被
嵌着部、５Ｃ・・・小径部、９・・・吸入ポート、１０
・・・吐出ポート、１１・・・ロッド、１７・・・隙間
、１８・・・環状リップ、１８ａ・・・受圧面、Ａ、　
Ｂ、　Ｃ・・・室。Fig. 1 is a sectional view of the main parts of a bellows pump using a conventional bellows, Figs. 2 and 3 are half-cut sectional views of a conventional bellows, and Fig. 4 is a half-cut sectional view of a bellows according to an embodiment of the present invention. It is a diagram. 1, 2. 3... Housing, 4... Diaphragm, 5... Bellows, 5a... Bellows, 5b... Fitted part, 5C... Small diameter part, 9... Suction port, 10
...Discharge port, 11...Rod, 17...Gap, 18...Annular lip, 18a...Pressure receiving surface, A,
B, C...room.

Claims

[Scope of utility model registration request]

In the bellows, which has a bellows and is freely expandable and contractable in the axial direction, one end in the axial direction is a part to be fitted into the housing, and the other moving end is provided with a small diameter part into which a rod is inserted. The inner diameter of the small diameter portion is formed to be slightly larger than the outer diameter of the rod to provide a slight gap between the two, and the small diameter portion is provided with an annular lip that comes into contact with the rod. A bellows characterized by:・