JPH03123914U

JPH03123914U -

Info

Publication number: JPH03123914U
Application number: JP3491690U
Authority: JP
Priority date: 1990-03-30
Filing date: 1990-03-30
Publication date: 1991-12-17

Description

[Brief explanation of drawings]

第１図及び第２図は本考案の一実施例を示すも
ので、第１図はエンジンバルブを関連する内燃機
関の動弁機構の要部とともに示した正面断面図、
第２図は第１図に示したエンジンバルブスプリン
グの正面図、第３図は第１図及び第２図に示した
エンジンバルブのリテーナの移動時の状態を誇張
して示した第１図と同様な正面断面図、第４図は
従来のエンジンバルブを関連する内燃機関の動弁
機構の要部とともに示した正面断面図、第５図は
第４図に示したエンジンバルブのリテーナ移動時
の小径側端部の状態を誇張して示した平面図であ
る。１……エンジンバルブ、４……リテーナ、１０
……バルブスプリング、１０ａ……座巻部、１０
１……巻線部分、４１……突部。 1 and 2 show an embodiment of the present invention; FIG. 1 is a front sectional view showing an engine valve together with the relevant parts of the valve mechanism of an internal combustion engine;
2 is a front view of the engine valve spring shown in FIG. 1, and FIG. 3 is an exaggerated view of the engine valve retainer shown in FIGS. 1 and 2 when it is moved. A similar front sectional view, FIG. 4 is a front sectional view showing a conventional engine valve together with the relevant parts of the valve mechanism of an internal combustion engine, and FIG. 5 is a front sectional view of the engine valve shown in FIG. 4 when the retainer is moved. FIG. 3 is a plan view showing an exaggerated state of the small-diameter end. 1...engine valve, 4...retainer, 10
... Valve spring, 10a ... End turn part, 10
1...Winding part, 41...Protrusion.

Claims

[Scope of utility model registration request]

interposed between a retainer attached to one end of a valve stem of an engine valve and a spring seat portion formed in a part of a main body of an internal combustion engine;
The valve spring for an internal combustion engine biases the engine valve in the valve closing direction, and is formed into a conical shape with the retainer side being the small diameter side and the spring seat side being the large diameter side, and furthermore, the spring has a conical shape with the retainer side being the small diameter side and the spring seat side being the large diameter side. Therefore, the winding portion facing the axial protrusion provided on the retainer, starting from the end turn portion on the small diameter side and reaching an appropriate number of turns, is set to have approximately the same diameter. Valve spring for.