JPS6411461U

JPS6411461U -

Info

Publication number: JPS6411461U
Application number: JP10676487U
Authority: JP
Priority date: 1987-07-10
Filing date: 1987-07-10
Publication date: 1989-01-20

Description

[Brief explanation of the drawing]

第１図はこの考案に係る密封式オートテンシヨ
ナの実施例を示す縦断正面図、第２図はオートテ
ンシヨナの使用状態を示す概略図、第３図は従来
の密封式オートテンシヨナの縦断正面図である。１……プレツシヤチヤンバ、２，３……調圧ス
プリング、４……ボデイ。 Fig. 1 is a vertical cross-sectional front view showing an embodiment of the sealed auto-tensioner according to this invention, Fig. 2 is a schematic diagram showing how the auto-tensioner is used, and Fig. 3 is a longitudinal cross-sectional view of a conventional sealed auto-tensioner. It is a front view. 1...Pressure chamber, 2, 3...Pressure adjustment spring, 4...Body.

Claims

[Claims for Utility Model Registration] (1) A plunger slidably inserted into a cylindrical body, a rod connected to one end of the plunger, and a telescopic rod that seals the opening of the cylindrical body. A boot, a supply chamber and a pressure chamber that are sealed in the front and back by the plunger, a check valve that connects the two chambers and opens and closes a communication hole formed in the plunger, and a check valve in the pressure chamber at the rear of the plunger. What is claimed is: 1. A sealed auto-tensioner comprising a pressure regulating spring housed therein and pressing the plunger against the rear end of the rod, wherein the pressure regulating spring has a double structure. (2) The sealed autotensioner according to claim 1, wherein the winding direction of the double pressure regulating springs is reversed.