JPH0421707U

JPH0421707U -

Info

Publication number: JPH0421707U
Application number: JP6144290U
Authority: JP
Priority date: 1990-06-11
Filing date: 1990-06-11
Publication date: 1992-02-24

Description

[Brief explanation of the drawing]

第１図は本考案による内燃機関の動弁機構を示
す断面図、第２図は第１図の−断面図、第３
図は第２図の−断面拡大図、第４図はリング
状スプリングの上面図、第５図及び第６図は従来
の実施例を示す同弁機構の断面図である。１……バルブリフタ、２……バルブステム、３
……リフタ本体、３ａ……スリーブ、３ｂ……隔
壁、３ｃ……凹部、３ｄ……凹溝、３ｅ……切欠
部、４……シム、４ａ……カム当接面、４ｂ……
溝、４ｃ……係合孔、６……リング状スプリング
、６ａ……係合部、６ｂ……係止部、１０……カ
ム。 Fig. 1 is a cross-sectional view showing a valve mechanism for an internal combustion engine according to the present invention, Fig. 2 is a - sectional view of Fig. 1;
The figure is an enlarged sectional view of FIG. 2, FIG. 4 is a top view of a ring-shaped spring, and FIGS. 5 and 6 are sectional views of the same valve mechanism showing conventional embodiments. 1... Valve lifter, 2... Valve stem, 3
... Lifter body, 3a ... Sleeve, 3b ... Partition wall, 3c ... Recess, 3d ... Concave groove, 3e ... Notch, 4 ... Shim, 4a ... Cam contact surface, 4b ...
Groove, 4c...Engaging hole, 6...Ring-shaped spring, 6a...Engaging portion, 6b...Locking portion, 10...Cam.

Claims

[Scope of utility model registration request]

It has a lifter body that is integrally formed with a sleeve that slides into the cylindrical hole of the cylinder head and a partition wall that extends inward from above the sleeve, and the cam abuts in a recess formed in the crown surface of the lifter body. In a valve lifter formed by fixing a disc-shaped shim having a surface, a groove is formed in a circumferential manner on one or both of the inner circumferential surface of the side wall of the recess of the lifter body and the outer circumferential surface of the shim; A notch communicating with the circumferential groove is formed on a side wall of the recess or an outer circumferential surface of the shim, and an engagement hole of a predetermined depth is formed in the shim or the lifter body so as to communicate with the circumferential groove. A ring-shaped spring is inserted into the circumferential recessed groove, and a hook-shaped engagement portion is formed at one end of the ring-shaped spring to be inserted into the engagement hole of the shim or the lifter body, and the other A valve lifter characterized in that an engaging portion is formed on the end side to be engaged with a notch of the lifter body or the shim, and the shim is removably attached to the recessed portion of the crown surface of the lifter body via a ring-shaped spring. .