JP3141113B2 - Belt pulley - Google Patents
Belt pulleyInfo
- Publication number
- JP3141113B2 JP3141113B2 JP05131098A JP13109893A JP3141113B2 JP 3141113 B2 JP3141113 B2 JP 3141113B2 JP 05131098 A JP05131098 A JP 05131098A JP 13109893 A JP13109893 A JP 13109893A JP 3141113 B2 JP3141113 B2 JP 3141113B2
- Authority
- JP
- Japan
- Prior art keywords
- boss
- stopper
- resin
- pulley body
- stopper piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Pulleys (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ベルトプーリに関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt pulley.
【０００２】[0002]
【従来の技術】従来のベルトプーリは、図４に示すよう
に、図示しないエンジンやモータなどの駆動装置からの
駆動力を、ベルト１を介してプーリ本体２へ伝達し、プ
ーリ本体２を回転して、プーリ本体２の軸心部に一体に
固定された入力軸３を回転させることにより、入力軸３
に接続された図示しない各種の機器を駆動させるように
したものである。2. Description of the Related Art As shown in FIG. 4, a conventional belt pulley transmits a driving force from a driving device such as an engine or a motor (not shown) to a pulley body 2 via a belt 1 to rotate the pulley body 2. Then, by rotating the input shaft 3 integrally fixed to the shaft center of the pulley body 2, the input shaft 3
, And various devices (not shown) connected thereto are driven.
【０００３】尚、通常、入力軸３と駆動しようとする機
器との間には、回転数を調節するため、図示しない減速
機や増速機などの歯車機構が取付けられている。Usually, a gear mechanism (not shown) such as a speed reducer or a speed increaser is mounted between the input shaft 3 and a device to be driven in order to adjust the number of rotations.
【０００４】又、４は機器などのケーシング、５は入力
軸３とケーシング４との間に介在された軸受である。[0004] Reference numeral 4 denotes a casing of equipment or the like, and 5 denotes a bearing interposed between the input shaft 3 and the casing 4.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記従
来のベルトプーリには、以下のような問題があった。However, the conventional belt pulley has the following problems.
【０００６】即ち、プーリ本体２と入力軸３は一体に固
定されていたため、図示しないエンジンやモータなどの
駆動装置にトルク変動が生じた場合に、トルク変動が入
力軸３を介して直接図示しない減速機や増速機などの歯
車機構へ伝達されてしまうこととなり、歯車機構を構成
する歯車の歯にはバックラッシュが設けられていること
から、トルク変動により前記歯車の歯どうしが強く衝突
して、大きな歯打音を発生するという問題があった。That is, since the pulley body 2 and the input shaft 3 are integrally fixed, when a torque fluctuation occurs in a driving device such as an engine or a motor (not shown), the torque fluctuation is not directly shown via the input shaft 3. It will be transmitted to a gear mechanism such as a reduction gear or a speed increaser, and since the gear teeth constituting the gear mechanism are provided with backlash, the gear teeth strongly collide with each other due to torque fluctuation. Therefore, there is a problem that a loud rattle is generated.
【０００７】本発明は、上述の実情に鑑み、入力軸に接
続された歯車機構などがトルク変動によって歯打音を発
生することを防止し得るようにしたベルトプーリを提供
することを目的とするものである。The present invention has been made in view of the above circumstances, and has as its object to provide a belt pulley capable of preventing a gear mechanism or the like connected to an input shaft from generating a rattle due to torque fluctuation. Things.
【０００８】[0008]
【課題を解決するための手段】本発明は、被駆動側の入
力軸に一体に取付けられたボスにニードルベアリングを
介して駆動側のプーリ本体を回転自在に外嵌すると共
に、ボスのニードルベアリングから離れた位置とプーリ
本体との間を変形復帰可能な緩衝部材で連結し、ボスの
外周における緩衝部材とニードルベアリングとの間の位
置にストッパを突設すると共に、該ストッパを回転方向
上下流側から挟むストッパをプーリ本体の内周から突設
し、ボスから突設されたストッパと、該ストッパの両側
を挟むストッパとの間に、それぞれ樹脂ストッパ片を介
在させると共に、ボスに対しプーリ本体の回転量が多く
なる方向において前記樹脂ストッパ片の耐久性が向上し
且つトルク変動の歯打音の発生を適切に防止するよう、
ボスから突設されたストッパを基準として回転方向上流
側の樹脂ストッパ片の回転方向の長さ寸法を回転方向下
流側の樹脂ストッパ片よりも大きくし、且つ、少くとも
回転方向上流側の樹脂ストッパ片とボスから突設された
ストッパとの間に間隙を形成したことを特徴とするベル
トプーリにかかるものである。According to the present invention, a drive-side pulley body is rotatably fitted to a boss integrally mounted on a driven-side input shaft via a needle bearing, and a boss needle bearing is provided. The pulley body and the position apart from the main body are connected by a buffer member that can be deformed and returned, and a stopper is protruded at a position between the buffer member and the needle bearing on the outer periphery of the boss, and the stopper is moved downstream in the rotational direction. A stopper sandwiching from the side protrudes from the inner periphery of the pulley body, and a resin stopper piece is interposed between the stopper projecting from the boss and the stopper sandwiching both sides of the stopper. In the direction in which the amount of rotation increases, the durability of the resin stopper piece is improved, and the occurrence of a gear rattle due to torque fluctuation is appropriately prevented.
The length in the rotation direction of the resin stopper piece on the upstream side in the rotation direction is made larger than the resin stopper piece on the downstream side in the rotation direction with respect to the stopper protruded from the boss, and at least the resin stopper on the upstream side in the rotation direction. A belt pulley is characterized in that a gap is formed between the piece and a stopper protruding from the boss.
【０００９】[0009]
【作用】本発明の作用は以下の通りである。The operation of the present invention is as follows.
【００１０】被駆動側の入力軸に一体に取付けられたボ
スにニードルベアリングを介して駆動側のプーリ本体を
回転自在に外嵌し、ボスとプーリ本体との間を緩衝部材
で連結することにより、プーリ本体側にトルク変動が生
じた時に、緩衝部材が変形して、プーリ本体と入力軸と
の位相がずらされるので、トルク変動が吸収され、トル
ク変動が入力軸へ伝達されることが防止される。A drive-side pulley body is rotatably fitted to a boss integrally mounted on the driven-side input shaft via a needle bearing, and the boss and the pulley body are connected by a buffer member. When the torque fluctuation occurs on the pulley body side, the cushioning member is deformed and the phase between the pulley body and the input shaft is shifted, so that the torque fluctuation is absorbed and the torque fluctuation is prevented from being transmitted to the input shaft. Is done.
【００１１】又、ボスの外周とプーリ本体の内周の対応
する位置にそれぞれストッパを突設し、両ストッパ間に
周方向に間隙を有して樹脂ストッパ片を介在させたこと
により、ストッパと樹脂ストッパ片が係合した時に、ボ
スとプーリ本体との位相のずれ量が規制されるので、ト
ルク変動吸収時の緩衝部材の変形量が少なくなり、緩衝
部材の過大な変形による損傷が防止される。In addition, a stopper is protruded at a position corresponding to the outer periphery of the boss and the inner periphery of the pulley body, and a resin stopper piece is interposed between the two stoppers with a circumferential gap therebetween, so that the stopper and the stopper are interposed. When the resin stopper piece is engaged, the amount of phase shift between the boss and the pulley body is regulated, so the amount of deformation of the buffer member when absorbing torque fluctuations is reduced, and damage due to excessive deformation of the buffer member is prevented. You.
【００１２】更に、ボスから突設されたストッパを基準
として回転方向上流側の樹脂ストッパ片の回転方向の長
さ寸法を回転方向下流側の樹脂ストッパ片よりも大きく
し、且つ間隙の大きさを最適化することにより、ボスに
対しプーリ本体の回転量が多くなる方向において樹脂ス
トッパ片の耐久性や歯打音抑制機能を向上することがで
きる。Further, the length of the resin stopper piece on the upstream side in the rotation direction in the rotation direction is made larger than the resin stopper piece on the downstream side in the rotation direction with respect to the stopper projecting from the boss, and the size of the gap is reduced. By optimizing, it is possible to improve the durability of the resin stopper piece and the function of suppressing tooth hitting noise in the direction in which the rotation amount of the pulley body with respect to the boss increases.
【００１３】[0013]
【実施例】以下、本発明の実施例を図面を参照しつつ説
明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１４】図１、図２は、本発明の第一の実施例であ
る。FIGS. 1 and 2 show a first embodiment of the present invention.
【００１５】又、図中、１はベルト、３は入力軸、４は
ケーシング、５は入力軸３とケーシング４間に介装され
た軸受である。In the drawing, 1 is a belt, 3 is an input shaft, 4 is a casing, and 5 is a bearing interposed between the input shaft 3 and the casing 4.
【００１６】入力軸３の先端にボス嵌合用膨径部６を形
成し、該ボス嵌合用膨径部６に段付き円筒状をしたボス
７の小径部８を一体に嵌着固定し、ボス７の大径部９の
外周に、グリースなどを塗布されたリング状のニードル
ベアリング１０を介して円筒状のプーリ本体１１を回転
自在に外嵌し、プーリ本体１１の先端部内周とボス７の
小径部８外周との間を円盤状のゴムディスクなどの緩衝
部材１２を用いて連結する。A boss fitting bulging portion 6 is formed at the end of the input shaft 3, and a small diameter portion 8 of a stepped cylindrical boss 7 is integrally fitted and fixed to the boss fitting bulging portion 6. A cylindrical pulley main body 11 is rotatably fitted to the outer periphery of the large-diameter portion 9 through a ring-shaped needle bearing 10 coated with grease or the like. The outer periphery of the small-diameter portion 8 is connected to the outer periphery of the small-diameter portion 8 by using a buffer member 12 such as a disk-shaped rubber disk.
【００１７】又、ボス７における大径部９の入力軸３先
端側部分外周に、図２に示すように、周方向（回転方向
１３）に間隔を置いて複数のストッパ１４（図２では１
つのみ示している）を突設すると共に、プーリ本体１１
の対応する部分の内周に、周方向（回転方向１３）に間
隔を置いて前記ストッパ１４を挟むようストッパ１５を
突設し、ストッパ１４，１５の間に所定の間隙２６，２
６を有して樹脂製の樹脂ストッパ片２７，２８を嵌合す
る。As shown in FIG. 2, a plurality of stoppers 14 (one in FIG. 2) are provided on the outer periphery of the large diameter portion 9 of the boss 7 at the end of the input shaft 3 at intervals in the circumferential direction (rotation direction 13).
Are shown), and the pulley body 11
A stopper 15 protrudes from the inner periphery of the corresponding portion at intervals in the circumferential direction (rotation direction 13) so as to sandwich the stopper 14, and a predetermined gap 26, 2 is provided between the stoppers 14, 15.
6 is fitted with resin stopper pieces 27 and 28 made of resin.
【００１８】ここで、ボス７から突設されたストッパ１
４を基準として回転方向１３下流側の樹脂ストッパ片２
８の回転方向１３の長さ寸法を、上流側の樹脂ストッパ
片２７よりも小さくし、且つ、回転方向１３下流側の樹
脂ストッパ片２８とボス７から突設されたストッパ１４
との間隙２６を、回転方向１３上流側の樹脂ストッパ片
２７とボス７から突設されたストッパ１４との間隙２５
と同じか、より小さくする。Here, the stopper 1 projecting from the boss 7 is provided.
Resin stopper piece 2 on the downstream side in the rotation direction 13 with reference to 4
8 is smaller than the resin stopper piece 27 on the upstream side, and the resin stopper piece 28 on the downstream side in the rotation direction 13 and the stopper 14 protruding from the boss 7.
Between the resin stopper piece 27 on the upstream side in the rotation direction 13 and the stopper 14 protruding from the boss 7.
Same or smaller.
【００１９】尚、図中、１８は入力軸３とケーシング４
との間に設けられたオイルシール、１９はニードルベア
リング１０の後部側に設けられたシール、２０はニード
ルベアリング１０の先端側に設けられたシールリング、
２１は軸受５とケーシング４との間に介在された樹脂ス
ペーサ、２２はボス７の小径部８と大径部９を結ぶ段差
部、２３はボス７の段差部２２と緩衝部材１２との間に
形成される空間、２４はボス７の段差部２２に形成され
たエア抜孔である。In the figure, reference numeral 18 denotes the input shaft 3 and the casing 4
, A seal provided on the rear side of the needle bearing 10, a seal ring provided on the distal end side of the needle bearing 10,
21 is a resin spacer interposed between the bearing 5 and the casing 4, 22 is a step connecting the small diameter portion 8 and the large diameter portion 9 of the boss 7, and 23 is between the step 22 of the boss 7 and the cushioning member 12. Is an air vent hole formed in the step portion 22 of the boss 7.
【００２０】次に、作動について説明する。Next, the operation will be described.
【００２１】図示しないエンジンやモータなどの駆動装
置を用いてベルト１を移動すると、ベルト１に掛け渡さ
れたプーリ本体１１が回転し、プーリ本体１１にゴムデ
ィスクなどの緩衝部材１２を介して連結された入力軸３
が回転されて、入力軸３に接続された図示しない減速機
や増速機などの歯車機構を介して機器へ駆動力が伝達さ
れる。When the belt 1 is moved by using a drive device such as an engine or a motor (not shown), the pulley body 11 wound around the belt 1 rotates and is connected to the pulley body 11 via a buffer member 12 such as a rubber disk. Input shaft 3
Is rotated, and the driving force is transmitted to the device via a gear mechanism such as a speed reducer or a speed increaser (not shown) connected to the input shaft 3.
【００２２】この際、プーリ本体１１は、入力軸３に一
体に取付けられたボス７にニードルベアリング１０を介
して回転自在に支承されることにより、半径方向の移動
が拘束されている。At this time, the pulley body 11 is rotatably supported via a needle bearing 10 on a boss 7 integrally attached to the input shaft 3, thereby restricting the movement in the radial direction.
【００２３】そして、図示しないエンジンやモータなど
の駆動装置にトルク変動が生じた場合、プーリ本体１１
と入力軸３とを連結するゴムディスクなどの緩衝部材１
２が変形して、トルク変動の影響を吸収する。これによ
り、入力軸３にトルク変動が伝達されて、入力軸３に接
続された図示しない減速機や増速機などの歯車機構に歯
打音が発生されることが防止される。When a torque fluctuation occurs in a driving device such as an engine or a motor (not shown), the pulley body 11
Cushioning member 1 such as a rubber disk connecting the shaft and the input shaft 3
2 is deformed to absorb the influence of torque fluctuation. This prevents torque fluctuations from being transmitted to the input shaft 3 and preventing rattling noise from being generated in a gear mechanism such as a speed reducer or a speed increaser (not shown) connected to the input shaft 3.
【００２４】ゴムディスクなどの緩衝部材１２が変形し
て、トルク変動の影響を吸収する際には、プーリ本体１
１とボス７との間に位相のずれが生じるが、間隙２５，
２６の分だけ位相がずれた所で、ボス７に形成されたス
トッパ１４が、樹脂ストッパ片２７，２８に当り、樹脂
ストッパ片２７，２８を介してプーリ本体１１に形成さ
れたストッパ１５を係止することによって、位相ずれが
規制されるので、ゴムディスクなどの緩衝部材１２が過
大に変形して破損することが防止される。When the cushioning member 12 such as a rubber disk is deformed to absorb the influence of torque fluctuation, the pulley body 1
1 and the boss 7 have a phase shift, but the gap 25,
When the phase is shifted by 26, the stopper 14 formed on the boss 7 hits the resin stopper pieces 27 and 28, and engages the stopper 15 formed on the pulley body 11 via the resin stopper pieces 27 and 28. By stopping, the phase shift is regulated, so that the cushioning member 12 such as a rubber disk is prevented from being excessively deformed and damaged.
【００２５】そして、通常、トルク変動は、ほとんどエ
ンジンやモータなどの駆動装置の回転が速まる方向、即
ち、ボス７に対してプーリ本体１１の回転量が多くなる
方向に生じるので、ボス７から突設されたストッパ１４
の両側で樹脂ストッパ片２７，２８及び間隙２５，２６
の大きさを均等にする必要がない。Normally, torque fluctuations occur almost in the direction in which the rotation of a driving device such as an engine or a motor is accelerated, that is, in the direction in which the rotation amount of the pulley body 11 is increased with respect to the boss 7. Stopper 14 provided
Resin stopper pieces 27 and 28 and gaps 25 and 26
There is no need to equalize the size of
【００２６】そこで、トルク変動の起こる方向に応じ
て、ボス７から突設されたストッパ１４を基準として回
転方向１３下流側の樹脂ストッパ片２８の回転方向１３
の長さ寸法を、上流側の樹脂ストッパ片２７よりも小さ
くし、且つ、回転方向１３下流側の樹脂ストッパ片２８
とボス７から突設されたストッパ１４との間隙２６を、
上流側の樹脂ストッパ片２７とボス７から突設されたス
トッパ１４との間隙２５と同じか、より小さくすること
により、樹脂ストッパ片２７，２８及び間隙２５，２６
の大きさが最適化されて、樹脂ストッパ片２７，２８の
耐久性や、入力軸３に接続された図示しない減速機や増
速機などに対する歯打音抑制機能を向上することができ
る。Therefore, depending on the direction in which the torque fluctuation occurs, the rotation direction 13 of the resin stopper piece 28 on the downstream side in the rotation direction 13 with respect to the stopper 14 projecting from the boss 7 is used as a reference.
Is smaller than the resin stopper piece 27 on the upstream side, and the resin stopper piece 28 on the downstream side in the rotation direction 13 is smaller.
And the gap 26 between the boss 7 and the stopper 14
By making the gap 25 between the resin stopper piece 27 on the upstream side and the stopper 14 protruding from the boss 7 equal to or smaller than that, the resin stopper pieces 27 and 28 and the gaps 25 and 26 are formed.
Is optimized, and the durability of the resin stopper pieces 27 and 28 and the function of suppressing the rattle noise of a speed reducer, a speed-increasing gear, and the like (not shown) connected to the input shaft 3 can be improved.
【００２７】図３は本発明の第二の実施例であり、トル
ク変動が、エンジンやモータなどの駆動装置の回転が速
まる方向、即ち、ボス７に対してプーリ本体１１の回転
量が多くなる方向にのみ生じるという場合に、回転方向
１３下流側の樹脂ストッパ片２８とボス７から突設され
たストッパ１４との間隙２６をなくすようにした以外は
前記実施例と同様の構成を備えており同様の作用効果を
得ることができる。FIG. 3 shows a second embodiment of the present invention, in which the torque fluctuation is caused in a direction in which the rotation of a driving device such as an engine or a motor is accelerated, that is, the rotation amount of the pulley body 11 is increased with respect to the boss 7. In the case where it occurs only in the direction, the same configuration as that of the above embodiment is provided except that the gap 26 between the resin stopper piece 28 on the downstream side in the rotation direction 13 and the stopper 14 protruding from the boss 7 is eliminated. Similar functions and effects can be obtained.
【００２８】尚、本発明は、上述の実施例にのみ限定さ
れるものではなく、本発明の要旨を逸脱しない範囲内に
おいて種々変更を加え得ることは勿論である。It should be noted that the present invention is not limited to the above-described embodiment, and it is needless to say that various changes can be made without departing from the spirit of the present invention.
【００２９】[0029]
【発明の効果】本発明のベルトプーリによれば、下記の
如き、種々の優れた効果を奏し得る。According to the belt pulley of the present invention, various excellent effects can be obtained as described below.
【００３０】Ｉ）被駆動側の入力軸に一体に取付けられ
たボスにニードルベアリングを介して駆動側のプーリ本
体を回転自在に外嵌し、ボスとプーリ本体との間を緩衝
部材で連結することにより、プーリ本体側にトルク変動
が生じた時に、緩衝部材が変形して、プーリ本体と入力
軸との位相がずらされるので、トルク変動が吸収され、
トルク変動が入力軸へ伝達されることを防止することが
できる。I) The drive-side pulley body is rotatably fitted via a needle bearing to a boss integrally attached to the driven-side input shaft, and the boss and the pulley body are connected by a buffer member. Thereby, when torque fluctuation occurs on the pulley main body side, the buffer member is deformed and the phase between the pulley main body and the input shaft is shifted, so that the torque fluctuation is absorbed,
It is possible to prevent the torque fluctuation from being transmitted to the input shaft.
【００３１】ＩＩ）ボスの外周とプーリ本体の内周の対
応する位置にそれぞれストッパを突設し、両ストッパ間
に周方向に間隙を有して樹脂ストッパ片を介在させたこ
とにより、ストッパと樹脂ストッパ片が係合した時に、
ボスとプーリ本体との位相のずれ量が規制されるので、
トルク変動吸収時の緩衝部材の変形量が少なくなり、緩
衝部材の過大な変形による損傷を防止することができ
る。II) A stopper is protruded at a position corresponding to the outer periphery of the boss and the inner periphery of the pulley body, and a resin stopper piece is interposed between the two stoppers with a gap in the circumferential direction. When the resin stopper piece engages,
Since the amount of phase shift between the boss and the pulley body is regulated,
The amount of deformation of the buffer member at the time of absorbing the torque fluctuation is reduced, and damage due to excessive deformation of the buffer member can be prevented.
【００３２】ＩＩＩ）ボスから突設されたストッパを基
準として回転方向上流側の樹脂ストッパ片の回転方向の
長さ寸法を回転方向下流側の樹脂ストッパ片よりも大き
くし、且つ間隙の大きさを最適化することにより、ボス
に対しプーリ本体の回転量が多くなる方向において樹脂
ストッパ片の耐久性や歯打音抑制機能を向上することが
できる。III) The length of the resin stopper piece on the upstream side in the rotation direction in the rotation direction is made larger than that of the resin stopper piece on the downstream side in the rotation direction with respect to the stopper projecting from the boss, and the size of the gap is reduced. By optimizing, it is possible to improve the durability of the resin stopper piece and the function of suppressing tooth hitting noise in the direction in which the rotation amount of the pulley body with respect to the boss increases.
【図１】本発明の第一の実施例の概略側断面図である。FIG. 1 is a schematic side sectional view of a first embodiment of the present invention.
【図２】図１のＩＩ−ＩＩ矢視図である。FIG. 2 is a view taken in the direction of arrows II-II in FIG.
【図３】本発明の第二の実施例の図２と同様の図であ
る。FIG. 3 is a view similar to FIG. 2 of a second embodiment of the present invention.
【図４】従来例の概略側断面図である。FIG. 4 is a schematic side sectional view of a conventional example.
３ 入力軸 ７ ボス １０ ニードルベアリング １１ プーリ本体 １２ 緩衝部材 １３ 周方向（回転方向） １４，１５ ストッパ １９ シール ２０ リングシール ２５，２６ 間隙 ２７，２８ 樹脂ストッパ片 3 Input shaft 7 Boss 10 Needle bearing 11 Pulley body 12 Buffer member 13 Circumferential direction (Rotation direction) 14, 15 Stopper 19 Seal 20 Ring seal 25, 26 Gap 27, 28 Resin stopper piece
フロントページの続き (72)発明者 宮城 嘉幸 東京都江東区豊洲三丁目１番15号 石川 島播磨重工業株式会社 東二テクニカル センター内 (72)発明者 浅海 皓二 広島県安芸郡府中町新地３番１号 マツ ダ株式会社内 (72)発明者 後藤 剛 広島県安芸郡府中町新地３番１号 マツ ダ株式会社内 (72)発明者 大月 健 広島県安芸郡府中町新地３番１号 マツ ダ株式会社内 (72)発明者 岡島 欣哉 神奈川県藤沢市辻堂新町４−３−２ エ ヌ・オー・ケー・メグラスティソク株式 会社 藤沢工場内 雄飛寮 (56)参考文献 実開 昭64−53668（ＪＰ，Ｕ) 実開 平６−45132（ＪＰ，Ｕ) 実開 平５−61520（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) F16H 55/32 - 55/56 Continued on the front page (72) Inventor Yoshiyuki Miyagi 3-1-1-15 Toyosu, Koto-ku, Tokyo Ishikawajima-Harima Heavy Industries Co., Ltd. Inside Toji Technical Center No. 1 Inside Mazda Co., Ltd. (72) Inventor Takeshi Goto 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Inside Mazda Co., Ltd. (72) Ken Otsuki 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Matsu (72) Kinya Okajima Inventor 4-3-2 Tsujido Shinmachi, Fujisawa-shi, Kanagawa Prefecture NOK Meglastisok Co., Ltd. Yuhi Dormitory in Fujisawa Plant (56) References (JP, U) Japanese Utility Model Application Hei 6-45132 (JP, U) Japanese Utility Model Application Hei 5-61520 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) F16H 55/32-55 / 56
Claims (1)
ボスにニードルベアリングを介して駆動側のプーリ本体
を回転自在に外嵌すると共に、ボスのニードルベアリン
グから離れた位置とプーリ本体との間を変形復帰可能な
緩衝部材で連結し、ボスの外周における緩衝部材とニー
ドルベアリングとの間の位置にストッパを突設すると共
に、該ストッパを回転方向上下流側から挟むストッパを
プーリ本体の内周から突設し、ボスから突設されたスト
ッパと、該ストッパの両側を挟むストッパとの間に、そ
れぞれ樹脂ストッパ片を介在させると共に、ボスに対し
プーリ本体の回転量が多くなる方向において前記樹脂ス
トッパ片の耐久性が向上し且つトルク変動の歯打音の発
生を適切に防止するよう、ボスから突設されたストッパ
を基準として回転方向上流側の樹脂ストッパ片の回転方
向の長さ寸法を回転方向下流側の樹脂ストッパ片よりも
大きくし、且つ、少くとも回転方向上流側の樹脂ストッ
パ片とボスから突設されたストッパとの間に間隙を形成
したことを特徴とするベルトプーリ。1. A drive-side pulley body is rotatably fitted to a boss integrally attached to a driven-side input shaft via a needle bearing, and a position of the boss away from the needle bearing and a position between the boss and the pulley body. Are connected by a buffer member capable of returning to deformation, a stopper is provided at a position on the outer periphery of the boss between the buffer member and the needle bearing, and a stopper that sandwiches the stopper from the upstream and downstream in the rotational direction is connected to the pulley body. A resin stopper piece is interposed between a stopper protruding from the inner periphery and protruding from the boss, and a stopper sandwiching both sides of the stopper, and in a direction in which the rotation amount of the pulley body with respect to the boss increases. In order to improve the durability of the resin stopper piece and appropriately prevent the occurrence of rattling noise due to torque fluctuation, the rotation of the resin stopper piece relative to the stopper protruding from the boss is used as a reference. The length of the resin stopper piece on the upstream side in the rotation direction is made larger than that of the resin stopper piece on the downstream side in the rotation direction, and at least the resin stopper piece on the upstream side in the rotation direction and the stopper protruded from the boss. A belt pulley having a gap formed therebetween.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05131098A JP3141113B2 (en) | 1993-05-08 | 1993-05-08 | Belt pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05131098A JP3141113B2 (en) | 1993-05-08 | 1993-05-08 | Belt pulley |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06323401A JPH06323401A (en) | 1994-11-25 |
| JP3141113B2 true JP3141113B2 (en) | 2001-03-05 |
Family
ID=15049936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05131098A Expired - Fee Related JP3141113B2 (en) | 1993-05-08 | 1993-05-08 | Belt pulley |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3141113B2 (en) |
-
1993
- 1993-05-08 JP JP05131098A patent/JP3141113B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06323401A (en) | 1994-11-25 |
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