JPH0294970U

JPH0294970U -

Info

Publication number: JPH0294970U
Application number: JP1989003355U
Authority: JP
Priority date: 1989-01-13
Filing date: 1989-01-13
Publication date: 1990-07-27

Description

[Brief explanation of drawings]

第１図は本考案の一実施例に係る密封装置の取
付状態を示す要部縦断面図、第２図は第１図の密
封装置の取り出して示した要部縦断面図、第３図
は従来の密封装置の取付状態を示す要部縦断面図
である。符号の説明、１……密封装置、２……ハウジン
グ、３……回転軸、４……スリンガ、４１……固
定部、４２，４３……大径、小径フランジ、４４
……段差、４５……摺動面、４６……第２の摺動
面、５……装置本体、５１……外周はめ合い部、
５２……フランジ部、５３……シールリツプ、５
４……突堤、６……環状空所、７……補助リツプ
、８……ダストシール。 Fig. 1 is a longitudinal cross-sectional view of the main parts showing the installed state of a sealing device according to an embodiment of the present invention, Fig. 2 is a longitudinal cross-sectional view of the main parts taken out of the sealing device of Fig. 1, and Fig. 3 is FIG. 2 is a vertical sectional view of a main part showing a conventional sealing device in an attached state. Explanation of symbols, 1... Sealing device, 2... Housing, 3... Rotating shaft, 4... Slinger, 41... Fixed part, 42, 43... Large diameter, small diameter flange, 44
... Step, 45 ... Sliding surface, 46 ... Second sliding surface, 5 ... Device main body, 51 ... Outer circumference fitting part,
52...Flange part, 53...Seal lip, 5
4... Jetty, 6... Annular cavity, 7... Auxiliary lip, 8... Dust seal.

Claims

[Claims for Utility Model Registration] Consisting of a slinger that is attached and fixed to a rotating shaft and a device body that is attached and fixed to a housing, the slinger has a sliding surface that is substantially orthogonal to the rotating shaft on the atmospheric side end surface. The device body is provided with a seal lip that makes slidable and sealing contact with the sliding surface, and an annular space surrounded by the seal lip, the slinger, and the outer periphery of the rotating shaft is formed between the slinger and the device body. In the sealing device, a second sliding surface is provided on the slinger at a position farther away from the sliding surface toward the sealing fluid side in the axial direction and on the inner diameter side of the sliding surface, and a second sliding surface is provided on the device main body. A sealing device characterized in that the annular cavity is sealed by providing an auxiliary lip that makes sealing contact with the sliding surface.