JPH0311155U

JPH0311155U -

Info

Publication number: JPH0311155U
Application number: JP7119589U
Authority: JP
Priority date: 1989-06-20
Filing date: 1989-06-20
Publication date: 1991-02-04

Description

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

第１〜２図は本考案の第一実施例を示しており
、第１図は全体構成を示す断面図、第２図は第１
図のＡ部拡大断面図、第３〜４図は本考案の第二
実施例を示しており、第３図は全体構成を示す断
面図、第４図は第３図のＢ矢視図、第５図はオー
トテンシヨナを付設したエンジンのタイミングベ
ルト駆動機構を示す正面図、第６図は従来のオー
トテンシヨナの１例を示す、第１図同様の図であ
る。１……ベルト、２……駆動プーリ、３……従動
プーリ、４……ガイドプーリ、５……テンシヨン
プーリ、６……枢軸、７……揺動部材、８……は
ね、９……ボルト、１０……固定軸、１１……基
板、１２……緩衝筒、１３……保持筒、１４……
スリーブ、１５……ハウジング、１６……捩りコ
イルばね、１７……固定軸、１８……ハウジング
片、１８ａ……底部、１８ｂ……周壁部、１９…
…揺動部材、２０……支持筒部、２１……滑り軸
受、２２……ハウジング片、２２ａ……底部、２
３……捩りコイルばね、２４……ゴム筒、２５…
…ハウジング、２６，２７……係止部、２８……
係合部、２９……係止ピン、３０……腕片、３１
……枢軸、３２……ボルト、３３……転がり軸受
、３４……通孔、３５……凹孔、３６……板材。 1 and 2 show the first embodiment of the present invention, FIG. 1 is a cross-sectional view showing the overall configuration, and FIG. 2 is a first embodiment of the present invention.
3 and 4 show a second embodiment of the present invention; FIG. 3 is a sectional view showing the overall configuration; FIG. 4 is a view taken along arrow B in FIG. 3; FIG. 5 is a front view showing an engine timing belt drive mechanism equipped with an auto-tensioner, and FIG. 6 is a view similar to FIG. 1, showing an example of a conventional auto-tensioner. DESCRIPTION OF SYMBOLS 1... Belt, 2... Driving pulley, 3... Driven pulley, 4... Guide pulley, 5... Tension pulley, 6... Pivot, 7... Swinging member, 8... Spring, 9... ... Bolt, 10 ... Fixed shaft, 11 ... Board, 12 ... Buffer cylinder, 13 ... Holding cylinder, 14 ...
Sleeve, 15...Housing, 16...Torsion coil spring, 17...Fixed shaft, 18...Housing piece, 18a...Bottom part, 18b...Peripheral wall part, 19...
... Swinging member, 20 ... Support cylinder part, 21 ... Sliding bearing, 22 ... Housing piece, 22a ... Bottom part, 2
3...Torsion coil spring, 24...Rubber tube, 25...
...Housing, 26, 27...Locking part, 28...
Engaging portion, 29... Locking pin, 30... Arm piece, 31
... Pivot, 32 ... Bolt, 33 ... Rolling bearing, 34 ... Through hole, 35 ... Recessed hole, 36 ... Plate material.

Claims

【実用新案登録請求の範囲】 (1) 固定部材の固定軸と、この固定軸を中心と
して揺動する揺動部材と、この揺動部材の一部に
設けられた固定軸と平行な枢軸によつて、揺動部
材に枢支されたテンシヨンプーリと、一端を上記
固定部材に、他端を揺動部材にそれぞれ係止し、
上記テンシヨンプーリをベルトに押し付ける方向
の弾力を、揺動部材に対して付与する捩りコイル
ばねとを有するオートテンシヨナに於いて、上記
固定部材に固定の部分と上記揺動部材との間に、
上記捩りコイルばねの弾力に抗して固定部材と揺
動部材とを変位させた状態のまま、両部材同士の
相対的変位を阻止する係止ピンを設け、この係止
ピンによる係合を外部から取り外し自在とした事
を特徴とするオートテンシヨナ。 (2) 固定部材に設けた固定側ハウジング片の一
部と、揺動部材に設けた揺動側ハウジング片の一
部とを互いに重ね合わせ、この重ね合わせ部を貫
通する状態で係止ピンを設けた、請求項１に記載
のオートテンシヨナ。 (3) 固定軸の端部に、この固定軸に対する回転
を不能として板材を外嵌し、この板材の外周寄り
部分に形成した通孔を挿通した係止ピンを、揺動
部材の一部に形成した凹孔に挿入した、請求項１
に記載のオートテンシヨナ。 (4) 係止ピンが、外部からの衝撃により折れる
材質、形状とした、請求項１〜３の何れかに記載
のオートテンシヨナ。 (5) 係止ピンが外部から抜き取り自在である、
請求項１〜３の何れかに記載のオートテンシヨナ
。[Claims for Utility Model Registration] (1) A fixed shaft of a fixed member, a swinging member that swings about this fixed shaft, and a pivot parallel to the fixed shaft provided on a part of this swinging member. Therefore, a tension pulley pivotally supported by the swinging member is locked at one end to the fixed member and at the other end to the swinging member,
In an autotensioner having a torsion coil spring that imparts elasticity to the swinging member in the direction of pressing the tension pulley against the belt, between a portion fixed to the fixed member and the swinging member. ,
While the fixed member and the swinging member are displaced against the elasticity of the torsion coil spring, a locking pin is provided to prevent relative displacement between the two members, and the engagement by this locking pin is An auto tensioner that is characterized by being removable. (2) Overlap a part of the fixed side housing piece provided on the fixed member and a part of the swing side housing piece provided on the swinging member, and insert the locking pin so that it passes through this overlapped part. An autotensioner according to claim 1, further comprising: an autotensioner according to claim 1; (3) A plate material is fitted onto the end of the fixed shaft so that it cannot rotate relative to the fixed shaft, and a locking pin inserted through a hole formed in the outer circumference of the plate material is attached to a part of the swinging member. Claim 1: inserted into the formed concave hole.
The autotensioner described in . (4) The autotensioner according to any one of claims 1 to 3, wherein the locking pin is made of a material and has a shape that can be broken by an external impact. (5) The locking pin is removable from the outside.
The autotensioner according to any one of claims 1 to 3.