JPH0290346U

JPH0290346U -

Info

Publication number: JPH0290346U
Application number: JP17150988U
Authority: JP
Priority date: 1988-12-28
Filing date: 1988-12-28
Publication date: 1990-07-18

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を示す縦
断側面図、第２図はこの考案の第２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
を示す縦断側面図、第３図はこの考案の第３の実
施例を示すロツカカバーとプラグチユーブとのシ
ール構造を示す縦断側面図、第４図はこの考案の
第４の実施例を示すロツカカバーとプラグチユー
ブとのシール構造を示す縦断側面図、第５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、１１……凹部
、１２……凸部、１４……プラグチユーブガスケ
ツト、１６……リツプ部、１８……プラグキヤツ
プ、２０……係合部、２１……鍔部。 Fig. 1 is a vertical sectional side view showing a sealing structure between a rocker cover and a plug tube showing a first embodiment of this invention, and Fig. 2 is a sealing structure between a rocker cover and a plug tube showing a second embodiment of this invention. FIG. 3 is a vertical side view showing the sealing structure between the rocker cover and the plug tube according to the third embodiment of this invention, and FIG. FIG. 5 is a vertical side view showing a sealing structure between a conventional rocker cover and a plug tube. 2...Plug tube, 3...Spark plug, 4
... Locker cover, 5 ... Fitting hole, 11 ... Recessed part, 12 ... Convex part, 14 ... Plug tube gasket, 16 ... Lip part, 18 ... Plug cap, 20 ... Engaging part, 21 ...Tsubabe.

Claims

[Scope of utility model registration request]

In a sealing structure in which a plug tube gasket seals between a rocker cover and a plug tube, the plug tube has a recess formed on the outer peripheral surface of the upper end and a convex portion on the inner peripheral surface, and the upper end of the plug tube fits into the plug tube. a rocker cover having a fitting hole to be fitted; a plug tube gasket that is fitted into the recess of the plug tube and has a lip portion at its upper end that elastically presses against the lower surface of the rocker cover; and an upper end of the plug tube. A sealing structure for a rocker cover and a plug tube, comprising a plug cap that is inserted through an opening and has an engaging portion that engages with the convex portion and a flange that presses against the upper surface of the rocker cover.