JP4326142B2 - Refueling route to idler - Google Patents

Refueling route to idler Download PDF

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Publication number
JP4326142B2
JP4326142B2 JP2000401276A JP2000401276A JP4326142B2 JP 4326142 B2 JP4326142 B2 JP 4326142B2 JP 2000401276 A JP2000401276 A JP 2000401276A JP 2000401276 A JP2000401276 A JP 2000401276A JP 4326142 B2 JP4326142 B2 JP 4326142B2
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Japan
Prior art keywords
fixed shaft
idler
receiving hole
shaft receiving
housing
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JP2000401276A
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Japanese (ja)
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JP2002201924A (en
Inventor
和之 岩田
信晴 高橋
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Description

【０００１】
【発明の属する技術分野】
本発明は、駆動軸と被動軸との間、すなわち駆動軸から被動軸への動力伝達経路に設けられるアイドラへの給油路に関するものである。
【０００２】
【従来の技術】
例えばエンジンのバランス軸やオイルポンプなどに対してクランク軸の回転力を伝達する経路には、軸間距離や回転方向の適正設定のために、あるいはベルトやチェーンの巻き掛け角度の適正設定のためにアイドラが設けられることが一般的である。このアイドラは、例えばオイルポンプのハウジングやシリンダブロックなどに固定された軸に対して回転自在に装着され、その軸受部への潤滑油は、固定軸におけるボルト挿通孔と固定用ボルトとの隙間から、固定軸に設けられた径方向孔を経て、アイドラと固定軸との摺接面に導かれるようにされている（実公平６−１８００９号公報参照）。
【０００３】
また、アイドラに対するポンプからの潤滑油吐出路は、ポンプハウジングやシリンダブロックなどの固定軸支持体に鋳抜き、あるいは機械加工で形成された油路に対し、固定軸支持体の外面から穿設したドリル孔を連通させることによって形成することが一般的であった。
【０００４】
【発明が解決しようとする課題】
しかるに、上記従来の構成によると、ラジアル荷重の作用面に供給された残りの潤滑油がスラスト荷重の作用面に回るようになっている。このため、スラスト荷重の作用面への潤滑油の供給量が不足ぎみになるおそれがあった。固定軸に油路を内設し、所望の部位への潤滑油供給量を増加させることも考えられるが、このようにすることは、固定軸の強度上や製造上の制約が増えるので好ましくない。
【０００５】
また、固定軸支持体の外面からのドリル孔で潤滑油吐出路を形成するという従来の手法によると、ドリル孔の捨て孔部分の開口をシールプラグなどで塞ぐ必要があるため、加工工数や組立工数の低減が困難であった。
【０００６】
本発明は、このような従来技術の問題点を解消すべく案出されたものであり、その第１の目的は、アイドラの支持軸の強度上や製造上の問題を生ずることなく、ラジアル荷重およびスラスト荷重の作用面への潤滑油を十分に供給することができるように改良されたアイドラへの給油路を提供することにある。
【０００７】
また本発明の第２の目的は、ハウジングの外面からドリル孔を穿設して給油路を形成した場合の加工工数や組立工数の低減を実現し得るように改良されたアイドラへの給油路を提供することにある。
【０００８】
【課題を解決するための手段】
このような目的を果たすために、本発明は、ハウジング（５）における駆動軸と被動軸との間に形成された固定軸受容孔（６）にその基端部が嵌着された固定軸（７）に枢支され、且つその軸方向内側端面がハウジングに摺接したアイドラ（１）に給油すべく、固定軸受容孔の内周面に開口するようにハウジングに内設された潤滑油吐出路（実施の形態中の第２部分１５ｂ）を有するアイドラへの給油路であって、前記固定軸受容孔の底面に設けられ前記潤滑油吐出路と連通する凹部（１１）と、前記固定軸受容孔の内周面における前記固定軸の軸線方向から見て前記凹部の一部と重なり合う位置に、前記凹部から前記固定軸受容孔の開口面に至って形成された軸方向溝（１４)とを有し、前記アイドラは、その軸方向内側端面が前記ハウジングに摺接しており、前記軸方向溝を経て前記アイドラの軸方向内側端面と前記ハウジングとの摺接面への給油が行われるようにした。
【０００９】
このようにすれば、ラジアル荷重の作用面への給油路とは別にスラスト荷重の作用面への給油路を、固定軸自体には何ら手を加えずに簡単に形成することができる。
【００１０】
また、本発明は、ハウジングにおける駆動軸と被動軸との間に形成された固定軸受容孔にその基端部が嵌着された固定軸に枢支されたアイドラに給油すべく、固定軸受容孔の内周面に開口するようにハウジングに内設された潤滑油吐出路を有するアイドラへの給油路であって、固定軸の内部に形成された軸方向通路（実施の形態中の固定ボルト１０とボルト挿通孔１３との隙間）と、当該アイドラと固定軸との摺接面と軸方向通路との間を連通する径方向通路（実施の形態中の径方向貫通孔１６）と、潤滑油吐出路と軸方向通路とを連通させるべく固定軸受容孔の底面に設けられた凹部（１１）と、前記固定軸受容孔の内周面における固定軸の軸線方向から見て凹部の一部と重なり合う位置に形成された凹部から固定軸受容孔の開口面に至る軸方向溝（１４）とを有する。
【００１１】
このようにすれば、固定軸受容孔に固定軸を嵌着することで潤滑油吐出路のハウジングの外面に開口する部分が塞がれる。しかも潤滑油吐出路と軸方向通路との間の連通路を鋳造工程で形成することができる。特に、固定軸受容孔の内周面における固定軸の軸線方向から見て凹部の一部と重なり合う位置に、凹部から固定軸受容孔の開口面に至る軸方向溝を形成するものとすれば、スラスト荷重の作用面への給油路をも凹部と同時に形成することができる。
【００１２】
【発明の実施の形態】
以下に添付の図面を参照して本発明について詳細に説明する。
【００１３】
図１並びに図２は、本発明に基づき構成されたアイドラギアの取付部を示している。このアイドラギア１は、クランク軸２（駆動軸）に設けられたクランクギア３の回転力を、潤滑油ポンプ（図示せず）のポンプ軸４ａ（被動軸）に設けられたポンプギア４に伝達する経路の中間位置に設けられるものであり、クランクギア３と同一歯数の平歯車からなり、オイルパン内に配設されたオイルポンプハウジング５に取り付けられた状態で、クランクギア３とポンプギア４との両者に噛み合っている。
【００１４】
オイルポンプハウジング５のクランク軸方向前端壁には、固定軸受容孔６が形成されている。この固定軸受容孔６には、固定軸７の基端部が例えば圧入にて緊密に嵌着されている。そして固定軸７には、軸挿通孔にメタル軸受８を圧入固着してなるアイドラギア１が枢着されている。
【００１５】
固定軸７の軸端には、抜け止めフランジ９が形成されており、この抜け止めフランジ９とオイルポンプハウジング５との間にアイドラギア１を挟持した上で、オイルポンプハウジング５に対して固定ボルト１０を螺着することにより、アイドラギア１を枢支した状態の固定軸７が、オイルポンプハウジング５に固定されている。
【００１６】
固定軸受容孔６の底面には、図３に示すように、鶏卵形輪郭の凹部１１が、鋳造工程で形成されている。この凹部１１の大径側は、固定ボルト１０が螺着される雌ねじ孔１２の中心と同心とされ、固定軸７のボルト挿通孔１３と固定ボルト１０との隙間に接続している。そして凹部１１の小径側は、固定軸受容孔６の内周面に食い込んでおり、この食い込みは、その断面形状のまま、固定軸受容孔６の開口面に達する軸方向溝１４に連なっている。
【００１７】
上記の如く、軸方向溝１４は、固定軸７の軸線方向から見て凹部１１の小径側の端部とラップしている。従って、凹部１１を鋳抜き形成する際に軸方向溝１４も同時に形成することができるので、加工工数を増大させずに済む。また、軸方向溝１４は、固定軸７の上側（好ましくは垂直線上）に設けるものとすれば、アイドラギア１のスラスト荷重作用面の全面に潤滑油を行き渡らせることができるので、潤滑性の向上を企図し得る。
【００１８】
軸方向溝１４には、オイルポンプ（図示せず）の吐出口に連なる潤滑油の吐出路が交差している。この吐出路は、オイルポンプハウジング５内に鋳抜きで形成された第１部分１５ａと、オイルポンプハウジング５の一端面から第１部分１５ａに接続するようにドリル加工にて形成された第２部分１５ｂとからなっている。このように、オイルポンプハウジング５の一端面からドリル孔を貫通させた場合、従来はドリル孔の開口端をプラグで塞いでいたのが、本発明の構造によれば、固定軸７を嵌着することでドリル孔の捨て孔部分が塞がれるので、プラグが不要となる。
【００１９】
固定軸７におけるアイドラギア１の嵌着部の軸方向中間に位置する部位には、径方向貫通孔１６が形成されている。従って、この径方向貫通孔１６は、固定軸７のボルト挿通孔１３と固定ボルト１０との隙間と連通している。
【００２０】
吐出路の第１部分１５ａから供給された潤滑油は、第２部分１５ｂを経て軸方向溝１４に流入し、軸方向溝１４を経てその一部はアイドラギア１の軸方向内側端面とオイルポンプハウジング５との摺接面、つまりスラスト荷重の作用面へ流れ、残りは凹部１１に流れ込む。そして凹部１１から、固定軸７のボルト挿通孔１３と固定ボルト１０との隙間（軸方向通路）および径方向貫通孔１６（径方向通路）を経て、アイドラギア１と一体をなすメタル軸受８と固定軸７との摺接面、つまりラジアル荷重の作用面に流れ出す。さらに固定軸７の抜け止めフランジ９との当接面に形成された径方向溝１７からアイドラギア１の前面を伝ってオイルパン内に流れ落ちる。
【００２１】
このようにして、アイドラギア１におけるスラスト、ラジアル両荷重の作用面に対する潤滑油が十分に供給されることとなる。
【００２２】
ところで、オイルポンプハウジング５に対するアイドラギア１の支持部とポンプギア４の支持部との間、及びこれら両ギアの支持部とオイルポンプハウジング５をオイルポンプボディ（図示せず）に固定するボルトを螺着するための複数のねじボス３２との間は、それぞれリブ３３で連結されている。これにより、両ギアの支持部の剛性が高められ、両ギア１・４の回転が安定化するので、ギアの噛み合い音のより一層の低減を企図することができる。
【００２３】
なお、潤滑油の吐出路１５は、オイルポンプハウジング５の形態によっては図４に示すように、固定軸受容孔６の開口から斜め方向にドリル孔で穿設するようにしても良い。このようにすれば、ドリル孔自体を短寸化し得るので、加工時間の短縮を企図し得る。また本発明は、上記したオイルポンプハウジング５に限らず、シリンダブロック等、固定軸を支持するものに等しく適用可能である。
【００２４】
【発明の効果】
このように本発明によるアイドラへの給油路の構成によれば、アイドラの支持部におけるスラスト荷重の作用面に対する最短の油路を固定軸に手を加えずに容易に形成し得るので、固定軸の強度上の問題や製造上の問題を生ずることなくスラスト荷重作用面の潤滑を満足させる上に大きな効果が得られる。
【００２５】
また、固定軸受容孔に固定軸を嵌着することで潤滑油吐出路のハウジング外面に開口する孔が塞がれるので、ハウジングの外面から穿設したドリル孔の捨て孔部分の開口を塞ぐためにシールプラグなどの余分な部材を用いる必要がなくなると共に、二次的な機械加工をせずに潤滑油吐出路と軸方向通路との間の連通路を形成することができるので、加工工数や組立工数を低減する上に大きな効果が得られる。しかもこの構造によると、固定軸に径方向孔を一つ貫通させるだけで済むので、固定軸の強度上の問題や製造上の問題を生ずることがない。
【００２６】
また、固定軸受容孔の内周面における固定軸の軸線方向から見て凹部の一部と重なり合う位置に、凹部から固定軸受容孔の開口面に至る軸方向溝が形成されることにより、スラスト荷重の作用面への給油路をも凹部と同時に形成することができるので、加工工数や組立工数の低減する上により一層効果的である。
【図面の簡単な説明】
【図１】アイドラギア取付部の軸線に沿う要部断面図
【図２】アイドラギア取付部の正面図
【図３】アイドラギアの取り付け部のハウジングのみの要部正面図
【図４】別の実施形態の図１と同様な要部断面図
【符号の説明】
１ アイドラギア
５ オイルポンプハウジング
６ 固定軸受容孔
７ 固定軸
１０ 固定ボルト
１１ 凹部
１３ ボルト挿通孔
１４ 軸方向溝
１５ａ 吐出路の第１部分
１５ｂ 吐出路の第２部分
１６ 径方向貫通孔[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an oil supply path to an idler provided in a power transmission path between a drive shaft and a driven shaft, that is, from the drive shaft to the driven shaft.
[0002]
[Prior art]
For example, in the path for transmitting the rotational force of the crankshaft to the engine balance shaft or oil pump, for the proper setting of the distance between the shafts and the rotational direction, or for the proper setting of the winding angle of the belt or chain It is common that an idler is provided in the main body. The idler is rotatably mounted on a shaft fixed to, for example, an oil pump housing or a cylinder block. Lubricating oil to the bearing portion passes through a gap between a bolt insertion hole and a fixing bolt in the fixed shaft. It is guided to the sliding contact surface between the idler and the fixed shaft through a radial hole provided in the fixed shaft (see Japanese Utility Model Publication No. 6-18809).
[0003]
Also, the lubricating oil discharge passage from the pump to the idler is drilled from the outer surface of the fixed shaft support to the oil passage formed by casting or machining on a fixed shaft support such as a pump housing or cylinder block. It has been common to form the drill holes by communicating them.
[0004]
[Problems to be solved by the invention]
However, according to the above-described conventional configuration, the remaining lubricating oil supplied to the acting surface of the radial load turns around the acting surface of the thrust load. For this reason, there is a possibility that the amount of lubricating oil supplied to the working surface of the thrust load will be insufficient. It is conceivable to install an oil passage in the fixed shaft and increase the amount of lubricating oil supplied to the desired part, but doing so is not preferable because it increases the strength of the fixed shaft and manufacturing restrictions. .
[0005]
In addition, according to the conventional method of forming a lubricating oil discharge path with a drill hole from the outer surface of the fixed shaft support, it is necessary to close the opening of the drill hole with a seal plug or the like. It was difficult to reduce man-hours.
[0006]
The present invention has been devised to solve such problems of the prior art. The first object of the present invention is to provide a radial load without causing problems in the strength of the support shaft of the idler and in manufacturing. Another object of the present invention is to provide an oil supply passage to the idler that is improved so that the lubricating oil can be sufficiently supplied to the working surface of the thrust load.
[0007]
In addition, a second object of the present invention is to provide an oil supply path to an idler that is improved so as to realize reduction in processing man-hours and assembly man-hours when a drill hole is formed from the outer surface of the housing to form an oil supply path. It is to provide.
[0008]
[Means for Solving the Problems]
In order to achieve such an object, the present invention provides a fixed shaft (6) having a base end portion fitted in a fixed shaft receiving hole (6) formed between the drive shaft and the driven shaft in the housing (5). 7) The lubricating oil discharge provided in the housing so as to open to the inner peripheral surface of the fixed shaft receiving hole so as to supply oil to the idler (1) whose axial inner end face is slidably contacted with the housing. An oil supply path to an idler having a path (second portion 15b in the embodiment), a recess (11) provided on the bottom surface of the fixed shaft receiving hole and communicating with the lubricating oil discharge path, and the fixed shaft An axial groove (14) formed from the recess to the opening surface of the fixed shaft receiving hole at a position overlapping with a part of the recessed portion when viewed from the axial direction of the fixed shaft on the inner peripheral surface of the receiving hole. The idler has an inner end surface in the axial direction of the housing. Ri Contact sliding contact with the grayed and so refueling is performed axially inner end surface of said through said axial groove idler into sliding contact surface with the housing.
[0009]
In this way, an oil supply path to the thrust load acting surface can be easily formed without any modification on the fixed shaft itself, in addition to the oil load path to the radial load acting surface.
[0010]
The present invention also provides a fixed shaft receiving device for supplying oil to an idler pivotally supported by a fixed shaft having a base end portion fitted in a fixed shaft receiving hole formed between a drive shaft and a driven shaft in a housing. An oil supply passage to an idler having a lubricating oil discharge passage provided in the housing so as to open to the inner peripheral surface of the hole, and an axial passage formed inside the fixed shaft (the fixing bolt in the embodiment) 10 and the bolt insertion hole 13), a radial passage communicating between the sliding contact surface between the idler and the fixed shaft and the axial passage (the radial through hole 16 in the embodiment), lubrication A recess (11) provided on the bottom surface of the fixed shaft receiving hole to allow the oil discharge passage and the axial passage to communicate with each other, and a part of the recess as viewed from the axial direction of the fixed shaft on the inner peripheral surface of the fixed shaft receiving hole To the opening surface of the fixed shaft receiving hole And a groove (14).
[0011]
If it does in this way, the part opened to the outer surface of the housing of a lubricating oil discharge channel will be plugged up by fitting a fixed axis in a fixed axis receiving hole. In addition, the communication path between the lubricant discharge path and the axial path can be formed by a casting process. In particular, if an axial groove extending from the recessed portion to the opening surface of the fixed shaft receiving hole is formed at a position overlapping with a part of the recessed portion when viewed from the axial direction of the fixed shaft on the inner peripheral surface of the fixed shaft receiving hole, The oil supply path to the acting surface of the thrust load can be formed simultaneously with the recess.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
[0013]
1 and 2 show an attachment portion of an idler gear constructed according to the present invention. The idler gear 1 is a path for transmitting the rotational force of the crank gear 3 provided on the crankshaft 2 (drive shaft) to the pump gear 4 provided on the pump shaft 4a (driven shaft) of a lubricating oil pump (not shown). Between the crank gear 3 and the pump gear 4 in a state of being attached to an oil pump housing 5 disposed in the oil pan. It meshes with both.
[0014]
A fixed shaft receiving hole 6 is formed in the front end wall in the crankshaft direction of the oil pump housing 5. The base end portion of the fixed shaft 7 is tightly fitted into the fixed shaft receiving hole 6 by, for example, press fitting. The idler gear 1 formed by press-fitting and fixing a metal bearing 8 to the shaft insertion hole is pivotally attached to the fixed shaft 7.
[0015]
At the shaft end of the fixed shaft 7, a retaining flange 9 is formed. The idler gear 1 is sandwiched between the retaining flange 9 and the oil pump housing 5, and a fixing bolt is attached to the oil pump housing 5. The fixed shaft 7 in a state where the idler gear 1 is pivotally supported is fixed to the oil pump housing 5 by screwing 10.
[0016]
On the bottom surface of the fixed shaft receiving hole 6, as shown in FIG. 3, a concave portion 11 having an egg-shaped contour is formed by a casting process. The large diameter side of the recess 11 is concentric with the center of the female screw hole 12 into which the fixing bolt 10 is screwed, and is connected to the gap between the bolt insertion hole 13 of the fixing shaft 7 and the fixing bolt 10. The small diameter side of the recess 11 bites into the inner peripheral surface of the fixed shaft receiving hole 6, and this biting continues to the axial groove 14 reaching the opening surface of the fixed shaft receiving hole 6 while maintaining its cross-sectional shape. .
[0017]
As described above, the axial groove 14 wraps with the end portion on the small diameter side of the recess 11 when viewed from the axial direction of the fixed shaft 7. Therefore, since the axial groove 14 can be formed at the same time when the concave portion 11 is formed by casting, it is not necessary to increase the number of processing steps. Further, if the axial groove 14 is provided on the upper side (preferably on the vertical line) of the fixed shaft 7, the lubricating oil can be spread over the entire thrust load acting surface of the idler gear 1, thereby improving the lubricity. Can be contemplated.
[0018]
The axial groove 14 intersects with a discharge path for lubricating oil that continues to a discharge port of an oil pump (not shown). The discharge path is formed by casting a first portion 15a formed in the oil pump housing 5 and a second portion formed by drilling so as to connect to the first portion 15a from one end surface of the oil pump housing 5. 15b. As described above, when the drill hole is penetrated from one end surface of the oil pump housing 5, the open end of the drill hole is conventionally plugged with the plug. According to the structure of the present invention, the fixed shaft 7 is fitted. By doing so, the discarded hole portion of the drill hole is closed, so that a plug is unnecessary.
[0019]
A radial through hole 16 is formed in a portion of the fixed shaft 7 that is located in the middle of the fitting portion of the idler gear 1 in the axial direction. Accordingly, the radial through hole 16 communicates with a gap between the bolt insertion hole 13 of the fixed shaft 7 and the fixed bolt 10.
[0020]
Lubricating oil supplied from the first portion 15a of the discharge passage flows into the axial groove 14 via the second portion 15b, and part of the lubricating oil passes through the axial groove 14 and the axially inner end face of the idler gear 1 and the oil pump housing. 5 flows to the sliding contact surface, that is, the thrust load acting surface, and the rest flows into the recess 11. Then, the metal bearing 8 integrated with the idler gear 1 is fixed from the recess 11 through a gap (axial passage) and a radial through hole 16 (radial passage) between the bolt insertion hole 13 of the fixed shaft 7 and the fixing bolt 10. It flows out to the sliding contact surface with the shaft 7, that is, the radial load acting surface. Further, the oil flows from the radial groove 17 formed on the contact surface of the fixed shaft 7 with the retaining flange 9 along the front surface of the idler gear 1 into the oil pan.
[0021]
In this way, the lubricating oil for the working surfaces of the thrust and radial loads in the idler gear 1 is sufficiently supplied.
[0022]
By the way, a bolt for fixing the oil pump housing 5 to the oil pump body (not shown) is screwed between the support portion of the idler gear 1 and the support portion of the pump gear 4 with respect to the oil pump housing 5. The plurality of screw bosses 32 are connected to each other by ribs 33. As a result, the rigidity of the support portions of both gears is increased and the rotation of both gears 1 and 4 is stabilized, so that it is possible to further reduce the gear meshing noise.
[0023]
Depending on the form of the oil pump housing 5, the lubricating oil discharge passage 15 may be formed by a drill hole obliquely from the opening of the fixed shaft receiving hole 6 as shown in FIG. 4. In this way, since the drill hole itself can be shortened, the processing time can be shortened. The present invention is not limited to the oil pump housing 5 described above, and is equally applicable to a cylinder block or the like that supports a fixed shaft.
[0024]
【The invention's effect】
As described above, according to the configuration of the oil supply passage to the idler according to the present invention, the shortest oil passage with respect to the acting surface of the thrust load in the support portion of the idler can be easily formed without modifying the fixed shaft. A great effect can be obtained in satisfying the lubrication of the thrust load acting surface without causing the problem of strength and the problem of manufacturing.
[0025]
In addition, since the fixed shaft is fitted into the fixed shaft receiving hole, the hole opened on the outer surface of the housing of the lubricating oil discharge passage is closed, so that the drill hole portion of the drill hole drilled from the outer surface of the housing is closed. There is no need to use an extra member such as a seal plug, and a communication passage between the lubricating oil discharge passage and the axial passage can be formed without performing secondary machining. A great effect can be obtained in reducing man-hours. In addition, according to this structure, since only one radial hole is required to pass through the fixed shaft, there is no problem with the strength or manufacturing of the fixed shaft.
[0026]
Also, a portion with overlapping position of the recess as viewed from the axial direction of the fixed shaft in the inner circumferential surface of the solid Teijiku receiving hole, by axial grooves extending to the opening surface of the fixed shaft receiving bore from the recess is formed In addition, since the oil supply path to the working surface of the thrust load can be formed at the same time as the recess, it is more effective in reducing the number of processing steps and assembly steps.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of the main part along the axis of the idler gear mounting part. FIG. 2 is a front view of the idler gear mounting part. FIG. 3 is a front view of the main part of only the housing of the idler gear mounting part. Sectional view similar to FIG. 1 [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Idler gear 5 Oil pump housing 6 Fixed shaft receiving hole 7 Fixed shaft 10 Fixed bolt 11 Recess 13 Bolt insertion hole 14 Axial groove 15a First portion 15b of discharge passage Second portion 16 of discharge passage Radial through hole

Claims (3)

ハウジングに形成された固定軸受容孔にその基端部が嵌着された固定軸に枢支されたアイドラに給油すべく、前記固定軸受容孔の内周面に開口するように前記ハウジングに内設された潤滑油吐出路を有するアイドラへの給油路であって、
前記固定軸受容孔の底面に設けられ前記潤滑油吐出路と連通する凹部と、
前記固定軸受容孔の内周面における前記固定軸の軸線方向から見て前記凹部の一部と重なり合う位置に、前記凹部から前記固定軸受容孔の開口面に至って形成された軸方向溝とを有し、
前記アイドラは、その軸方向内側端面が前記ハウジングに摺接しており、前記軸方向溝を経て前記アイドラの軸方向内側端面と前記ハウジングとの摺接面への給油がなされるようにしてなることを特徴とするアイドラへの給油路。In order to refuel idler its proximal end to the fixed shaft receiving hole formed in Haujin grayed it is pivotally supported on the fixed shaft that is fitted to the housing so as to be open to the inner peripheral surface of the fixed shaft receiving bore An oil supply path to an idler having an internal lubricating oil discharge path,
A recess provided on the bottom surface of the fixed shaft receiving hole and communicating with the lubricating oil discharge passage;
An axial groove formed from the concave portion to the opening surface of the fixed shaft receiving hole at a position overlapping with a part of the concave portion when viewed from the axial direction of the fixed shaft on the inner peripheral surface of the fixed shaft receiving hole. Have
The idler, Ri Contact axially inner end face in sliding contact with the said housing, comprising as refueling is made axially inner end surface of said through said axial groove idler into sliding contact surface with the housing An oil supply path to the idler. ハウジングに形成された固定軸受容孔にその基端部が嵌着された固定軸に枢支されたアイドラに給油すべく、前記固定軸受容孔の内周面に開口するように前記ハウジングに内設された潤滑油吐出路を有するアイドラへの給油路であって、
前記固定軸の内部に形成された軸方向通路と、
前記アイドラと前記固定軸との摺接面と前記軸方向通路との間を連通する径方向通路と、
前記潤滑油吐出路と前記軸方向通路とを連通させるべく前記固定軸受容孔の底面に形成された凹部と、
前記固定軸受容孔の内周面における前記固定軸の軸線方向から見て前記凹部の一部と重なり合う位置に、前記凹部から前記固定軸受容孔の開口面に至って形成された軸方向溝とを有することを特徴とするアイドラへの給油路。In order to refuel idler its proximal end to the fixed shaft receiving hole formed in Haujin grayed it is pivotally supported on the fixed shaft that is fitted to the housing so as to be open to the inner peripheral surface of the fixed shaft receiving bore An oil supply path to an idler having an internal lubricating oil discharge path,
An axial passage formed inside the fixed shaft;
A radial passage communicating between the sliding contact surface between the idler and the fixed shaft and the axial passage;
A recess formed on the bottom surface of the fixed shaft receiving hole to communicate the lubricating oil discharge passage and the axial passage;
An axial groove formed from the concave portion to the opening surface of the fixed shaft receiving hole at a position overlapping with a part of the concave portion when viewed from the axial direction of the fixed shaft on the inner peripheral surface of the fixed shaft receiving hole. An oil supply path to the idler characterized by comprising: 前記アイドラは、その軸方向内側端面が前記ハウジングに摺接しており、前記軸方向溝を経て前記アイドラの軸方向内側端面と前記ハウジングとの摺接面への給油がなされるようにしてなることを特徴とする請求項２に記載のアイドラへの給油路。The idler has an axially inner end surface that is in sliding contact with the housing, and oil is supplied to the sliding contact surface between the axially inner end surface of the idler and the housing through the axial groove. The oil supply path to the idler according to claim 2.
JP2000401276A 2000-12-28 2000-12-28 Refueling route to idler Expired - Fee Related JP4326142B2 (en)

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JP4676966B2 (en) * 2007-02-14 2011-04-27 ヤンマー株式会社 Fuel injection pump mounting structure
JP2010096038A (en) 2008-10-15 2010-04-30 Honda Motor Co Ltd Lubricating device for rotating body bearing in power transmission mechanism and internal combustion engine
CN103850748B (en) * 2012-12-07 2017-12-26 光阳工业股份有限公司 The glossy construction of engine timing sprocket
US9057399B2 (en) 2013-08-02 2015-06-16 Electro-Motive Diesel, Inc. Idler gear stub shaft

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