JPH0368675U

JPH0368675U -

Info

Publication number: JPH0368675U
Application number: JP1989130063U
Authority: JP
Priority date: 1989-11-07
Filing date: 1989-11-07
Publication date: 1991-07-05
Anticipated expiration: 2004-11-07
Also published as: JPH0720448Y2

Description

[Brief explanation of the drawing]

第１図及び第２図は本考案の一実施例に係り、
第１図は密封装置の上半部を示す縦断側面図、第
２図は密封装置の上半部を示す正面図である。ま
た、第３図は従来例にかかり、第１図に対応する
図である。１……芯金、２……円板状部分、３……シール
本体部、４……外側部材、５……シール嵌着部、
６……シールリツプ部、７……フツ素樹脂被膜、
８……芯金延長部、９……リツプ基部、１０……
内側部材、１１……リツプ先端部、１３……貫通
孔。 1 and 2 relate to an embodiment of the present invention,
FIG. 1 is a longitudinal sectional side view showing the upper half of the sealing device, and FIG. 2 is a front view showing the upper half of the sealing device. Further, FIG. 3 shows a conventional example and corresponds to FIG. 1. DESCRIPTION OF SYMBOLS 1... Core metal, 2... Disk-shaped part, 3... Seal main body part, 4... Outer member, 5... Seal fitting part,
6...Seal lip part, 7...Fluororesin coating,
8... Core bar extension, 9... Lip base, 10...
Inner member, 11... lip tip, 13... through hole.

Claims

[Scope of Claim for Utility Model Registration] (1) An annular core metal having a radially extending disk-shaped portion and an extension portion extending radially inward from the disk-shaped portion; a seal body portion formed on the outer circumferential portion of the seal body portion and elastically fitted to the inner circumferential surface portion of the outer member; a seal lip part that is continuous with the main body part and whose lip tip slides in sliding contact with the outer peripheral surface part of the inner member; the inner peripheral surface of the seal main body part, the outer peripheral surface of the seal lip part, and the seal main part and the seal lip part are connected. a coil spring that is attached to an annular groove formed by one side of the lip base and presses the seal lip against the outer circumferential surface of the inner member; a fluororesin coating applied to the other side of the lip base, which is the side facing the core metal extension part, and the portion of the fluororesin coating applied to the lip base side is the core metal In a sealing device configured to be non-adhered to the extension part and sandwiched between the lip base and the core extension part, the portion of the fluororesin coating sandwiched by the core extension part includes: A sealing device characterized in that through holes are formed in several places around the circumference to penetrate in the axial direction so that the inner peripheral edge of the core bar extension and the lip base come into direct contact and are integrally bonded. . (2) The lip base connecting the seal main body and the seal lip has a sloped surface in which the one side surface forming the coil spring mounting groove increases in thickness as it goes radially outward from the position where the through hole is formed. and is connected to the inner periphery of the seal body,
2. The sealing device according to claim 1, wherein the sealing device is connected to a seal lip portion at a position where the through hole is formed at its thinnest thickness.