JPS61190060U

JPS61190060U -

Info

Publication number: JPS61190060U
Application number: JP7408785U
Authority: JP
Priority date: 1985-05-17
Filing date: 1985-05-17
Publication date: 1986-11-27

Description

[Brief explanation of the drawing]

第１図は本考案の実施例の正面概略図、第２図
は第１図の―線断面による本考案の縦断面図
、第３図は内輪の内周面側より見た内輪とリング
との装着図、第４図はリングの平面図、第５図は
第４図の―線断面図、第６図は別の実施例の
第３図相当図、第７図乃至第９図はそれぞれさら
に別の実施例の要部拡大断面図である。１……ベルト、２……シリンダーブロツク、３
……テンシヨナーベアリング、４……外輪、５…
…内輪、８……締着ボルト、９……底板部、１０
……長穴方向、１２，１３……貫通孔、１４……
ばね係止部、１５……ばね、１６……固定端、１
７……自由端、１９……リング、２０……突出部
、２１，２２……ばね係止部の内周側の角部、２
３……切欠き。 Fig. 1 is a schematic front view of an embodiment of the present invention, Fig. 2 is a longitudinal sectional view of the invention taken along the line - in Fig. 1, and Fig. 3 shows the inner ring and ring as seen from the inner peripheral surface side of the inner ring. Fig. 4 is a plan view of the ring, Fig. 5 is a sectional view taken along the line - - of Fig. 4, Fig. 6 is a view corresponding to Fig. 3 of another embodiment, and Figs. 7 to 9 are respectively FIG. 7 is an enlarged sectional view of a main part of yet another embodiment. 1...Belt, 2...Cylinder block, 3
...Tensioner bearing, 4...Outer ring, 5...
...Inner ring, 8...Tightening bolt, 9...Bottom plate part, 10
...Elongated hole direction, 12, 13...Through hole, 14...
Spring locking portion, 15... Spring, 16... Fixed end, 1
7...Free end, 19...Ring, 20...Protrusion, 21, 22...Corner on the inner peripheral side of the spring locking part, 2
3... Notch.

Claims

[Scope of utility model registration request]

The inner ring of the tensioner bearing is formed into a cup shape with a bottom plate part, and a diametrically long hole is provided in the bottom plate part through which a tightening bolt passes. The free end of the spring, which is slidably in contact with the side wall so as to be movable in the direction of the elongated hole and supported by the tightening bolt, and whose fixed end is fixed in place on the cylinder block, is attached to the open end of the inner ring on the inner and outer peripheries of the inner ring. It is inserted into a spring locking part provided through the surface and is locked to the inner ring, and the tension of the spring urges the inner ring in the direction of the elongated hole to reduce the tension of the belt stretched around the outer ring of the tensioner bearing. In the timing belt tensioner to be adjusted, the inner circumferential surface of the inner ring near the spring locking part has approximately the same hardness as the spring, protrudes from the inner circumferential surface of the inner ring, and has a convex cross section. A timing belt tensioner characterized in that a ring having an arcuate shape is attached, and the free end of the spring is engaged with the protrusion of the ring.