JPH02109048U

JPH02109048U -

Info

Publication number: JPH02109048U
Application number: JP1786189U
Authority: JP
Priority date: 1989-02-20
Filing date: 1989-02-20
Publication date: 1990-08-30
Anticipated expiration: 2004-02-20
Also published as: JP2503111Y2

Description

[Brief explanation of drawings]

図面は本考案によるテンシヨナの実施例を示し
、第１図は第１実施例の断面図、第２図は第１図
のテンシヨナに取付けられたオリフイスの正面図
、第３図は第２図の３−３線断面図、第４図は第
２図のオリフイスの変形例の正面図、第５図は第
４図の５−５線断面図、第６図は第２実施例の一
部拡大断面図、第７図は第３実施例の一部拡大断
面図、第８図は弁体の斜視図である。１０……歯付ベルト用テンシヨナ、１１……歯
付ベルト、２０……シリンダ、２１……ピストン
ロツド、２２……リザーバー部、２３……本体部
、２４……ピストン、２７……環状部材、２９，
２９ａ，４９……オリフイス、３１，３１ａ，３
１ｂ……低圧室、３２，３２ａ，３２ｂ……高圧
室、３３，３６……油路、４０……逆止弁、４１
，４１ａ，４１ｂ……オイルリザーバー、４２…
…ばね、４３，４３ｂ……孔、４４……ダイヤフ
ラム、５０……弁体。 The drawings show an embodiment of the tensioner according to the present invention, FIG. 1 is a sectional view of the first embodiment, FIG. 2 is a front view of the orifice attached to the tensioner of FIG. 1, and FIG. 3-3 line sectional view, Figure 4 is a front view of a modification of the orifice shown in Figure 2, Figure 5 is a 5-5 line sectional view of Figure 4, and Figure 6 is a partially enlarged view of the second embodiment. 7 is a partially enlarged sectional view of the third embodiment, and FIG. 8 is a perspective view of the valve body. 10... Tensioner for toothed belt, 11... Toothed belt, 20... Cylinder, 21... Piston rod, 22... Reservoir part, 23... Main body part, 24... Piston, 27... Annular member, 29 ，
29a, 49... Orifice, 31, 31a, 3
1b...Low pressure chamber, 32, 32a, 32b...High pressure chamber, 33, 36...Oil passage, 40...Check valve, 41
, 41a, 41b... oil reservoir, 42...
... Spring, 43, 43b ... Hole, 44 ... Diaphragm, 50 ... Valve body.

補正平２．５．１８図面の簡単な説明を次のように補正する。明細書第１４頁第２０行目の「斜視図」と「で
ある。」の間に「、第９図はシリンダーの一端が
ダイアフラムで密閉されたテンシヨナに本考案の
オリフイス機構を適用したものの断面図」を加入
する。Amendment 2.5.18 The brief description of the drawing is amended as follows. In the 20th line of page 14 of the specification, between "perspective view" and "is.", "," Figure 9 is a cross section of a tensioner in which one end of the cylinder is sealed with a diaphragm to which the orifice mechanism of the present invention is applied. Add "Figure".

Claims

[Claims for Utility Model Registration] (1) A cylinder filled with oil, a piston loosely fitted in the cylinder with a small gap and dividing the cylinder into a low pressure chamber and a high pressure chamber, and fixed to the piston by a spring. A piston rod provided with a protruding force, an oil passage communicating between the low pressure chamber and the high pressure chamber, a check valve provided in the oil passage and allowing oil to flow into the high pressure chamber, and a check valve provided on the low pressure chamber side. A toothed belt tensioner (2) comprising a diaphragm provided and an orifice provided between the oil passage and the diaphragm, the orifice being connected to the inner periphery of the annular member attached to the cylinder. The tensioner for a toothed belt according to item 1, which is configured between the tensioner and the outer circumference of the piston rod. (3) The diaphragm covers an oil reservoir that communicates with the low pressure chamber, and the annular member is provided between a hole that communicates with the oil reservoir and the oil passage. Tensioner (4) for a toothed belt according to item 1, wherein the diaphragm covers an oil reservoir communicating with the low pressure chamber, and the hole communicating between the oil reservoir and the low pressure chamber is an orifice. Tensiona