JPS5863457U - sealing device - Google Patents

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 the drawing]

第１図は密封装置の断面図、第２図は従来技術の密封装
置に使用される密封部材の断面図であり、第３図は本考
案に係る密封装置に使用される密封部材の断面図である
。 １・・・・・・回転軸、２・・・・・・ハウジング、３
・・・・・・ベアリング、４・・・・・・密封部材、９
・・・・・・ケーシング、１５・・・・・・本体部、１
６・・・・・・金属補強環、１７・・・・・・突起部、
１８・・・・・・先端、１９・・・・・・つけね部、２
０・・・・・・第１のリップシール部、２２・・・・・
・第２のりツブシール部、２３・・・・・・つけね部、
２４・・・・・・先端、２７・・・・・・第３のりツブ
シール部、２８・・・・・・スプリング用溝、２９・・
・・・・リップライン、３０・・・・・・第１の面、３
１・・・・・・第２の面、３２・・・・・・稜線、３３
・・・・・・環状溝、４１・・・・・・ガスケット部。FIG. 1 is a sectional view of a sealing device, FIG. 2 is a sectional view of a sealing member used in a conventional sealing device, and FIG. 3 is a sectional view of a sealing member used in a sealing device according to the present invention. It is. 1...Rotating shaft, 2...Housing, 3
...Bearing, 4...Sealing member, 9
...Casing, 15...Body part, 1
6...Metal reinforcement ring, 17...Protrusion,
18... Tip, 19... Attachment, 2
0...First lip seal part, 22...
・Second glue seal part, 23...Tsuke part,
24...Tip, 27...Third glue knob seal portion, 28...Spring groove, 29...
...Lip line, 30...First side, 3
1...Second surface, 32...Ridge line, 33
...Annular groove, 41...Gasket part.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 被密封流体を溜めるケーシング９を貫通する回転軸１、
前記回転軸１を支承するベアリング３、および前記ベア
リング３用のケースと一体をなすハウジング２の内周面
に嵌着された密封部材４を含み、前記密封部材４は、内
周側に位置し前記回転軸１の周面と密封的に摺接し前記
被密封流体側に向って本体部１５から伸びている第１の
りツブシール部２０と第２のりツブシール部２２、およ
び外周側に位置し前記ハウジング２と前記ケーシング９
間に挾持されるガスケット部４１とを有し、前記第１の
シールリップ部２０は略中心を通るっけね部１９から先
端１８までの長さ１と略中間における肉厚ｔとの比ｔｔ
ｔ’が０．２２乃至０．１０の範囲の形状を有し、前記
第２のりツブシール部２２は略中心を通るっけね部２３
から先端２４まで、の長さＬと略中間における肉厚Ｔと
の比Ｔ／Ｌが０．２５乃至０．１２の範囲の形状を有し
、前記第１のリップシール部２０は前記第２のリップシ
ール部２２に比へ被密封流体側に位置する密封装置。a rotating shaft 1 passing through a casing 9 that stores a sealed fluid;
It includes a bearing 3 that supports the rotating shaft 1, and a sealing member 4 fitted to the inner circumferential surface of a housing 2 that is integral with a case for the bearing 3, and the sealing member 4 is located on the inner circumferential side. a first glue seal portion 20 and a second glue seal portion 22 that are in sealing sliding contact with the circumferential surface of the rotating shaft 1 and extend from the main body portion 15 toward the sealed fluid side; and a second glue seal portion 22 that is located on the outer peripheral side of the housing. 2 and the casing 9
The first seal lip part 20 has a gasket part 41 sandwiched therebetween, and the first seal lip part 20 has a ratio tt between the length 1 from the tongue part 19 passing approximately at the center to the tip 18 and the wall thickness t at approximately the middle.
It has a shape in which t' is in the range of 0.22 to 0.10, and the second glue tongue seal portion 22 has a groove portion 23 passing approximately through the center.
The first lip seal portion 20 has a shape in which the ratio T/L of the length L from the tip to the tip 24 and the thickness T at approximately the middle is in the range of 0.25 to 0.12, and the first lip seal portion 20 is A sealing device located on the fluid side to be sealed relative to the lip seal portion 22 of.