JPH0468239U

JPH0468239U -

Info

Publication number: JPH0468239U
Application number: JP11158090U
Authority: JP
Priority date: 1990-10-26
Filing date: 1990-10-26
Publication date: 1992-06-17
Anticipated expiration: 2005-07-19
Also published as: JPH0731011Y2

Description

[Brief explanation of the drawing]

第１図は、本考案によるタイミングベルトテン
シヨナのロツク装置の一実施例を示すもので、そ
のタイミングベルトテンシヨナを含むベルトテン
シヨナを備えたエンジンの端面図、第２図は、第
１図のエンジンからバランサベルト及びそのテン
シヨナを取り外した状態を示す同様の端面図、第
３図は、そのベルトテンシヨナ部分を拡大して示
す第１図の−線に沿う縦断面図、第４図は、
そのタイミングベルトテンシヨナがロツク状態に
あるときの第３図の要部を示す縦断面図である。１……エンジン本体、３……カムシヤフト、５
……クランクシヤフト、７……カムプーリ、９…
…クランクプーリ、１４……タイミングベルト、
１６……ベルトテンシヨナ、１７……タイミング
ベルトテンシヨナ、１９……テンシヨナプーリ、
２０……テンシヨンアーム、２１……オートテン
シヨナ、２５……支点ボルト（支軸）、２８……
ロツク部、３０……貫通孔、３１……ロツク用ボ
ルト、３３……軸部、３４……フランジ部、３５
……ねじ部、３６……ねじ孔。 FIG. 1 shows an embodiment of a timing belt tensioner locking device according to the present invention, and FIG. 2 is an end view of an engine equipped with a belt tensioner including the timing belt tensioner. 3 is a similar end view showing the state in which the balancer belt and its tensioner are removed from the engine; FIG. 3 is a longitudinal sectional view taken along the line - in FIG. 1 showing an enlarged view of the belt tensioner portion; FIG. ,
FIG. 4 is a longitudinal sectional view showing the main part of FIG. 3 when the timing belt tensioner is in a locked state. 1...Engine body, 3...Camshaft, 5
...Crankshaft, 7...Cam pulley, 9...
...Crank pulley, 14...Timing belt,
16... Belt tensioner, 17... Timing belt tensioner, 19... Tensioner pulley,
20... Tension arm, 21... Auto tensioner, 25... Fulcrum bolt (spindle), 28...
Lock part, 30...Through hole, 31...Lock bolt, 33...Shaft part, 34...Flange part, 35
...Threaded part, 36...Screw hole.

Claims

[Claims for Utility Model Registration] A tension arm that is supported by the engine body through a support shaft so as to be able to swing freely, but cannot move in the axial direction of the support shaft; and a rotation at the tip of the tension arm. An engine equipped with a timing belt tensioner comprising: a freely supported tensioner pulley; an autotensioner that swings and urges the tension arm in a direction to press the tensioner pulley against the timing belt and applies tension to the timing belt. a lock portion provided near the spindle of the tension arm, spaced apart from the engine body, and having a large diameter through hole; and a locking bolt fastened to the engine body, the locking bolt having a smaller diameter than the through-hole of the tension arm and being inserted into the through-hole with some play, and the shaft portion. is located adjacent to
A flange portion having a diameter larger than the through hole is disposed between the lock portion of the tension arm and the engine body, and a threaded portion is provided adjacent to the flange portion and is fastened to the engine body. When the locking bolt is rotated in the tightening direction, the flange portion is pressed into contact with the engine body, and when the locking bolt is rotated in the loosening direction, the threaded portion remains in the threaded state with the engine body. A locking device for a timing belt tensioner in an engine, characterized in that the flange portion has a length sufficient to be pressed against the locking portion of the tension arm.