JPH02103157U

JPH02103157U -

Info

Publication number: JPH02103157U
Application number: JP1067289U
Authority: JP
Priority date: 1989-01-31
Filing date: 1989-01-31
Publication date: 1990-08-16

Description

[Brief explanation of drawings]

第１図はこの考案の第１の実施例を示すロツカ
カバーとプラグチユーブとのシール構造の縦断側
面図、第２図はこの考案の第２の実施例を示す同
シール構造の縦断側面図、第３図はこの考案の第
３の実施例を示す同シール構造の縦断側面図、第
４図はこの考案の第４の実施例を示す同シール構
造の縦断側面図、第５図はこの考案の第５の実施
例を示す同シール構造の縦断側面図、第６図はこ
の考案の第６の実施例を示す同シール構造の縦断
側面図、第７図はこの考案の第７の実施例を示す
同シール構造の縦断側面図、第８図は従来のロツ
カカバーとプラグチユーブとのシール構造を示す
縦断側面図である。２…プラグチユーブ、３…点火プラグ、４…ロ
ツカカバー、５…嵌合穴、１０…プラグチユーブ
ガスケツト、１１…内周部、１３…外周部、１６
…可撓部。 Fig. 1 is a longitudinal sectional side view of a seal structure between a rocker cover and a plug tube showing a first embodiment of this invention, and Fig. 2 is a longitudinal sectional side view of the same seal structure showing a second embodiment of this invention. Fig. 3 is a longitudinal sectional side view of the same seal structure showing a third embodiment of this invention, Fig. 4 is a longitudinal sectional side view of the same seal structure showing a fourth embodiment of this invention, and Fig. 5 is a longitudinal sectional side view of the same seal structure showing a fourth embodiment of this invention. FIG. 6 is a longitudinal sectional side view of the same seal structure showing the fifth embodiment of the invention, FIG. 6 is a longitudinal sectional side view of the same seal structure showing the sixth embodiment of the invention, and FIG. 7 is the seventh embodiment of the invention. FIG. 8 is a vertical side view showing a conventional sealing structure between a rocker cover and a plug tube. 2... Plug tube, 3... Spark plug, 4... Locker cover, 5... Fitting hole, 10... Plug tube gasket, 11... Inner circumference, 13... Outer circumference, 16
...Flexible part.

Claims

[Scope of utility model registration request]

In a seal structure in which a plug tube gasket seals between a rocker cover attached to a cylinder head and a plug tube, the plug tube into which the spark plug is inserted is opposed to or fitted into the upper end of the plug tube. a rocker cover having a fitting hole, an outer peripheral part of which is attached to the opening edge of the fitting hole, and an inner peripheral part of which is fitted to the outer periphery of the upper end of the plug tube;
A sealing structure between a rocker cover and a plug tube, comprising a plug tube gasket having a flexible portion having flexibility in the radial direction of the fitting hole in the intermediate portion.