JPH025148Y2 - - Google Patents
Info
- Publication number
- JPH025148Y2 JPH025148Y2 JP1983151295U JP15129583U JPH025148Y2 JP H025148 Y2 JPH025148 Y2 JP H025148Y2 JP 1983151295 U JP1983151295 U JP 1983151295U JP 15129583 U JP15129583 U JP 15129583U JP H025148 Y2 JPH025148 Y2 JP H025148Y2
- Authority
- JP
- Japan
- Prior art keywords
- sprocket
- case
- annular groove
- shaft
- thrust receiver
- 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
Links
- 229910000897 Babbitt (metal) Inorganic materials 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Gears, Cams (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Sliding-Contact Bearings (AREA)
Description
本考案は、チエーン伝動機構におけるスプロケ
ツトのスラスト受けに関するものである。
The present invention relates to a thrust receiver for a sprocket in a chain transmission mechanism.
この種のスプロケツトのスラスト受けに関して
は、従来例えば実開昭51−27749号公報に示すよ
うに、ボール軸受の外輪の両側面への対向部を有
するリング状の系止部材を、スプロケツトの両側
端面に当接してボルト結合したり、または実開昭
48−62479号公報に示すように、スプロケツトの
側端面にカラーのフランジ部を当接してそのカラ
ーを軸にボルト結合するものがある。
しかるにこれらの先行技術は、いずれも係止部
材またはカラーのフランジ部のスラスト受けを、
スプロケツトまたは軸にボルトで取付ける構造に
なつているので、部品点数、組立工数が多くな
り、また、ボルト締付けによりスプロケツトの保
持、スラスト荷重が変化し、かつボルトが長期間
使用後にゆるむとガタを生じるという欠点があ
る。もつとも、この欠点を解消する先行技術例と
して、実公昭48−245号公報に記載されたものが
ある。
Regarding this type of thrust bearing for a sprocket, conventionally, as shown in Japanese Utility Model Application Publication No. 51-27749, a ring-shaped stopper member having opposing portions on both sides of the outer ring of a ball bearing is attached to both end faces of the sprocket. It can be bolted together by contacting it, or it can be
As shown in Japanese Patent No. 48-62479, there is a device in which the flange portion of a collar is brought into contact with the side end surface of a sprocket, and the collar is bolted to the shaft. However, in all of these prior art, the thrust receiver of the locking member or the flange of the collar is
Since it is attached to the sprocket or shaft with bolts, the number of parts and assembly man-hours increases.In addition, tightening the bolts changes the sprocket retention and thrust load, and if the bolts loosen after long-term use, they may become loose. There is a drawback. However, as a prior art example for solving this drawback, there is a technique described in Japanese Utility Model Publication No. 48-245.
ところが上記先行技術例によれば、歯車などの
回転体とこの軸を固定支持する固定板のいずれか
一方には、同軸的に先端部に環状溝を有する突出
部を形成すると共に、他方には上記環状溝と嵌合
する形状の突出部を有する弾性ブラケツトを突設
しており、従つてスラスト受けは、その軸方向の
長さひいては固定板よりの突出長が大となり、か
つ上記環状溝とこれに嵌合する突出部との潤滑が
不充分となり、これらの間に焼付けや大なる摩耗
が生ずる恐れがあるなどの課題がある。
本考案は、このような従来技術における課題を
解消したスプロケツトのスラスト受けの提供を目
的とするものである。
However, according to the above-mentioned prior art example, one of a rotating body such as a gear and a fixed plate that fixedly supports the shaft is coaxially formed with a protrusion having an annular groove at its tip, and the other is provided with a protrusion having an annular groove at its tip. An elastic bracket is provided protrudingly having a protrusion shaped to fit into the annular groove, and therefore, the thrust receiver has a large axial length and a large protrusion length from the fixed plate, and the thrust receiver has a large protrusion that fits into the annular groove. There are problems such as insufficient lubrication between the protrusion and the fitting protrusion, which may cause seizing or large wear between the protrusions. The object of the present invention is to provide a thrust receiver for a sprocket that solves the problems of the prior art.
本考案は、この目的を達成するのため次のよう
な手段を有している。
ケースに固設した軸に、軸受を介装してスプロ
ケツトを回転自在に装着すると共に、上記スプロ
ケツトの一側に環状溝を形成し、該環状溝にケー
スに固設したスラスト受けを嵌合して上記スプロ
ケツトの軸方向の移動を規制するよう構成したも
のにおいて、上記スラスト受けを板状とすると共
に、上記スプロケツトの環状溝外側の段部を、上
記ケースに形成した凹部内に嵌入し、さらに、一
端を該ケース側のオイル通路に連通し、他端を軸
受に開口するオイル孔を、上記軸に穿設したした
ことを特徴とするものである。
The present invention has the following means to achieve this objective. A sprocket is rotatably mounted on a shaft fixed to the case with a bearing interposed therebetween, and an annular groove is formed on one side of the sprocket, and a thrust receiver fixed to the case is fitted into the annular groove. in which the thrust receiver is plate-shaped, and a stepped portion of the sprocket on the outside of the annular groove is fitted into a recess formed in the case; The shaft is characterized in that the shaft is provided with an oil hole that communicates with the oil passage on the case side at one end and opens into the bearing at the other end.
以下、図面を参照して本考案の一実施例を具体
的に説明する。第１図において、本考案をチエー
ン伝動系の途中のアイドラスプロケツトに適用し
た場合について説明すると、符号１はケース、２
はケース１に一体的に圧入される軸であり、この
軸２にアイドラスプロケツト３が、軸受メタル４
を介して回転自在に嵌合している。そしてケース
１側のオイル通路５が、軸２内部のオイル孔６を
介して軸受メタル４に連通し、強制潤滑するよう
になつている。
また、上記スプロケツト３のケース側には環状
溝７が形成され、この環状溝７外側の段部８がケ
ース側に形成された凹部９内に嵌入されている。
そして上記スプロケツト３の環状溝７の円周上の
一部に、ケース１と一体的なスラスト受け１０が
上記スプロケツト３の径方向に挿入嵌合してあ
る。
上記構成により、図示しないチエーンによりス
プロケツト３が回転する場合に、そのスプロケツ
ト３は、環状溝７に嵌合するスラスト受け１０に
より軸方向の移動が規制される。
第２図において、スプロケツトを利用して他の
手段を駆動する場合について説明すると、スプロ
ケツト３の、上記スラスト受け１０と反対側の端
部中心に、軸２と同軸方向に係合溝１１が形成さ
れ、この係合溝１１に、オイルポンプ等の駆動軸
１２よりの突起１３を同軸上で嵌合するのであ
り、これによりスプロケツト３の回転に伴つて上
記ポンプなどが駆動される。
なお上記実施例では、軸に回転自在に取付けら
れるアイドラ等のスプロケツトについて説明した
が、回転自在な軸に一体的に取付けられるバラン
サ等のスプロケツトに適用することも可能であ
る。
Hereinafter, one embodiment of the present invention will be specifically described with reference to the drawings. In Fig. 1, the present invention is applied to an idler sprocket in the middle of a chain transmission system.
is a shaft that is press-fitted into the case 1, and the idler sprocket 3 is attached to this shaft 2, and the bearing metal 4 is attached to the shaft 2.
It is rotatably fitted through the . An oil passage 5 on the side of the case 1 communicates with the bearing metal 4 via an oil hole 6 inside the shaft 2 for forced lubrication. Further, an annular groove 7 is formed on the case side of the sprocket 3, and a stepped portion 8 on the outside of the annular groove 7 is fitted into a recess 9 formed on the case side.
A thrust receiver 10 integral with the case 1 is inserted and fitted into a part of the circumference of the annular groove 7 of the sprocket 3 in the radial direction of the sprocket 3. With the above configuration, when the sprocket 3 is rotated by a chain (not shown), the movement of the sprocket 3 in the axial direction is restricted by the thrust receiver 10 that fits into the annular groove 7. In FIG. 2, to explain the case where the sprocket is used to drive other means, an engagement groove 11 is formed coaxially with the shaft 2 at the center of the end of the sprocket 3 on the side opposite to the thrust receiver 10. A protrusion 13 from a drive shaft 12 of an oil pump or the like is coaxially fitted into this engagement groove 11, thereby driving the pump or the like as the sprocket 3 rotates. In the above embodiment, a sprocket such as an idler that is rotatably attached to a shaft has been described, but it is also possible to apply the present invention to a sprocket such as a balancer that is integrally attached to a rotatable shaft.
上述したように本考案によると、スプロケツト
の環状溝に嵌合するスラスト受けを板状にすると
共に、スプロケツトの環状溝の外側の段部をケー
スに形成した凹部内に嵌入したので、スラスト受
けは、上記先行技術例に比べて、その軸方向の長
さと、該ケースよりの突出長を共に短縮化して小
型にすることができ、さらに一端をケース側のオ
イル通路に連通し、他端を軸受へと開口するオイ
ル孔を軸に穿設し軸受を強制潤滑するようにした
ので、上記先行技術例と異り軸受を潤滑してから
該軸受のケース側から浸出するオイルは、ケース
の凹部とスプロケツトの段部との間の〓間を介し
てスラスト受けの背面に供給されて、スラスト受
けとスプロケツトの環状溝との摺動面を効率よく
潤滑するので、スラスト受けと環状溝との摩擦接
触による駆動力損失とこれらの摩耗が減少され、
従つてこれらの長寿命化、メンテナンスの省略化
が可能となる。
As described above, according to the present invention, the thrust receiver that fits into the annular groove of the sprocket is made into a plate shape, and the outer step of the annular groove of the sprocket is fitted into the recess formed in the case, so that the thrust receiver is , compared to the above prior art example, both the axial length and the protrusion length from the case can be shortened, making it more compact.Furthermore, one end is connected to the oil passage on the case side, and the other end is connected to the bearing. Since an oil hole that opens into the shaft is drilled in the shaft to forcibly lubricate the bearing, unlike the prior art example described above, the oil that seeps out from the case side of the bearing after lubricating the bearing is not absorbed by the recess in the case. The lubricant is supplied to the back surface of the thrust receiver through the gap between the stepped portion of the sprocket and efficiently lubricates the sliding surface between the thrust receiver and the annular groove of the sprocket, thereby preventing frictional contact between the thrust receiver and the annular groove. Driving force loss and wear caused by these are reduced,
Therefore, their lifespan can be extended and maintenance can be omitted.
第１図は本考案によるスプロケツトのスラスト
受けの一実施例を示す断面図、第２図は他の手段
を付加した一例を示す要部の断面図である。
１……ケース、２……軸、３……アイドラスプ
ロケツト、４……軸受メタル、５……オイル通
路、６……オイル孔、７……環状溝、８……段
部、９……凹部、１０……スラスト受け、１１…
…係合溝、１２……駆動軸、１３……突起。
FIG. 1 is a sectional view showing one embodiment of a thrust receiver for a sprocket according to the present invention, and FIG. 2 is a sectional view of essential parts showing an example in which other means are added. 1... Case, 2... Shaft, 3... Idler sprocket, 4... Bearing metal, 5... Oil passage, 6... Oil hole, 7... Annular groove, 8... Step, 9... Recessed portion, 10... Thrust receiver, 11...
...Engagement groove, 12...Drive shaft, 13...Protrusion.
Claims (1)
ケツトを回転自在に装着すると共に、上記スプロ
ケツトの一側に環状溝を形成し、該環状溝にケー
スに固設したスラスト受けを嵌合して上記スプロ
ケツトの軸方向の移動を規制するよう構成したも
のにおいて、 上記スラスト受けを板状とすると共に、上記ス
プロケツトの環状溝外側の段部を、上記ケースに
形成した凹部内に嵌入し、 さらに、一端を該ケース側のオイル通路に連通
し、他端を軸受に開口するオイル孔を、上記軸に
穿設したことを特徴とするスプロケツトのスラス
ト受け。[Claims for Utility Model Registration] A sprocket is rotatably mounted on a shaft fixed to a case with a bearing interposed therebetween, and an annular groove is formed on one side of the sprocket, and a sprocket is fixed to the case in the annular groove. The sprocket is configured to be fitted with a thrust receiver provided therein to restrict axial movement of the sprocket, wherein the thrust receiver is plate-shaped, and a stepped portion on the outside of the annular groove of the sprocket is formed in the case. A thrust receiver for a sprocket, characterized in that the shaft is provided with an oil hole that fits into the recess and communicates with the oil passage on the case side at one end and opens into the bearing at the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15129583U JPS6058955U (en) | 1983-09-29 | 1983-09-29 | Sprocket thrust receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15129583U JPS6058955U (en) | 1983-09-29 | 1983-09-29 | Sprocket thrust receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6058955U JPS6058955U (en) | 1985-04-24 |
| JPH025148Y2 true JPH025148Y2 (en) | 1990-02-07 |
Family
ID=30335311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15129583U Granted JPS6058955U (en) | 1983-09-29 | 1983-09-29 | Sprocket thrust receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6058955U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48245U (en) * | 1971-05-26 | 1973-01-05 | ||
| JPS5127749B2 (en) * | 1974-05-31 | 1976-08-14 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5127749U (en) * | 1974-08-22 | 1976-02-28 |
-
1983
- 1983-09-29 JP JP15129583U patent/JPS6058955U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS48245U (en) * | 1971-05-26 | 1973-01-05 | ||
| JPS5127749B2 (en) * | 1974-05-31 | 1976-08-14 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6058955U (en) | 1985-04-24 |
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