JPH0222440U

JPH0222440U -

Info

Publication number: JPH0222440U
Application number: JP10148488U
Authority: JP
Priority date: 1988-07-30
Filing date: 1988-07-30
Publication date: 1990-02-14

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図はこの考案に係るチエーン張力自動調整
装置の一実施例を示す断面図、第２図はその要部
の拡大断面図、第３図はこの考案の異なる実施例
を示す断面図、第４図はプランジヤ先端にシユー
を備えた実施例を示す要部の断面図、第５図はチ
エーン張力自動調整装置を備えた動弁装置の伝動
機構全体の構成説明図、第６図は伝動機構の異な
る例を示す構成説明図、第７図は従来のチエーン
張力自動調整装置の断面図である。２２……シリンダ、２４……プランジヤ、２５
……油室、２６……テンシヨンスプリング、３３
……油溜室、３５……連通孔、３６……副逆止弁
。 Fig. 1 is a sectional view showing an embodiment of the automatic chain tension adjustment device according to this invention, Fig. 2 is an enlarged sectional view of its main parts, and Fig. 3 is a sectional view showing a different embodiment of this invention. Figure 4 is a sectional view of the main parts showing an embodiment with a shoe at the tip of the plunger, Figure 5 is an explanatory diagram of the overall configuration of the transmission mechanism of a valve gear equipped with an automatic chain tension adjustment device, and Figure 6 is the transmission mechanism. FIG. 7 is a sectional view of a conventional chain tension automatic adjustment device. 22...Cylinder, 24...Plunger, 25
...Oil chamber, 26...Tension spring, 33
...Oil reservoir chamber, 35...Communication hole, 36...Sub-check valve.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

シリンダに摺動可能に嵌合し、かつテンシヨン
スプリングにて突出方向に付勢されるとともに、
先端側が上方となるように水平面に対し傾斜した
プランジヤと、このプランジヤによつてシリンダ
内に画成され、かつ油が供給される油室と、この
油室とプランジヤ外部とを連通するようにプラン
ジヤ先端部に貫通形成された連通孔と、この連通
孔に設けられ、かつ外部から油室への空気の侵入
を阻止する逆止弁とを備えてなるチエーン張力自
動調整装置。 It is slidably fitted into the cylinder and is biased in the protruding direction by a tension spring,
A plunger that is inclined with respect to a horizontal plane so that its tip side faces upward; an oil chamber that is defined in the cylinder by the plunger and to which oil is supplied; and a plunger that communicates between the oil chamber and the outside of the plunger. An automatic chain tension adjustment device comprising a communication hole formed through the tip and a check valve provided in the communication hole to prevent air from entering the oil chamber from the outside.