JP2012141064A - Ball bearing and supporting structure - Google Patents
Ball bearing and supporting structure Download PDFInfo
- Publication number
- JP2012141064A JP2012141064A JP2012096143A JP2012096143A JP2012141064A JP 2012141064 A JP2012141064 A JP 2012141064A JP 2012096143 A JP2012096143 A JP 2012096143A JP 2012096143 A JP2012096143 A JP 2012096143A JP 2012141064 A JP2012141064 A JP 2012141064A
- Authority
- JP
- Japan
- Prior art keywords
- ball
- lubricating oil
- inner ring
- shield plate
- ball bearing
- 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.)
- Withdrawn
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
- F16C33/6659—Details of supply of the liquid to the bearing, e.g. passages or nozzles
- F16C33/6674—Details of supply of the liquid to the bearing, e.g. passages or nozzles related to the amount supplied, e.g. gaps to restrict flow of the liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/38—Ball cages
- F16C33/41—Ball cages comb-shaped
- F16C33/412—Massive or moulded comb cages, e.g. snap ball cages
- F16C33/414—Massive or moulded comb cages, e.g. snap ball cages formed as one-piece cages, i.e. monoblock comb cages
- F16C33/416—Massive or moulded comb cages, e.g. snap ball cages formed as one-piece cages, i.e. monoblock comb cages made from plastic, e.g. injection moulded comb cages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
- F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
- F16C33/7846—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with a gap between the annular disc and the inner race
- F16C33/785—Bearing shields made of sheet metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Sealing Of Bearings (AREA)
Abstract
Description
本発明は、玉軸受及び支持構造に関し、より詳細には、自動車用変速機等に用いられる樹脂製の冠形保持器を備えた玉軸受及び支持構造に関する。 The present invention relates to a ball bearing and a support structure, and more particularly to a ball bearing and a support structure provided with a resin crown-shaped cage used for a transmission for an automobile or the like.
一般に、自動車の自動変速機等の装置では、強制潤滑により潤滑油が玉軸受に供給されることが知られている(例えば、特許文献1及び2参照。)。特許文献1及び2に記載の装置では、もみ抜き保持器の形状を変更することで、強制潤滑による潤滑及び冷却効率を高める技術が開示されている。
In general, in an apparatus such as an automatic transmission of an automobile, it is known that lubricating oil is supplied to a ball bearing by forced lubrication (see, for example, Patent Documents 1 and 2). In the apparatuses described in
ところで、近年、環境問題の高まりとも相俟って自動車の変速機を構成する玉軸受においても、低トルク化のニーズが高まっている。しかしながら、上記のような強制潤滑される玉軸受において、潤滑油が多量に供給された場合には、潤滑油の抵抗によるドラッグトルクが増大して軸受の動摩擦トルクに大きく影響を与え、燃費向上の障害となっている。 Incidentally, in recent years, the need for lower torque is also increasing in ball bearings that constitute a transmission of an automobile, coupled with an increase in environmental problems. However, in a ball bearing that is forcedly lubricated as described above, when a large amount of lubricating oil is supplied, the drag torque due to the resistance of the lubricating oil increases, greatly affecting the dynamic friction torque of the bearing and improving fuel efficiency. It is an obstacle.
一方、潤滑油の抵抗によるドラッグトルクを低減するため、潤滑油の供給量を少なくすると、油膜厚さが不足して軸受寿命を低下させる虞があり、極端な場合には軸受の焼付きが発生することが懸念される。また、潤滑油の供給経路が、玉軸受と他の周辺部品に共用されている場合には、潤滑油の供給量を少なくした影響が、該周辺部品へも波及して潤滑油の供給が十分になされず、周辺部品の潤滑に悪影響を及ぼす可能性があった。また、保持器として冠形保持器を使用する場合には、軸受に供給された潤滑油が玉だけでなく、該爪片によっても大きく攪拌され、攪拌抵抗が大きくなる問題があった。 On the other hand, if the supply amount of lubricating oil is reduced to reduce drag torque due to the resistance of the lubricating oil, the oil film thickness may be insufficient and bearing life may be reduced. In extreme cases, seizure of the bearing may occur. There is a concern to do. In addition, when the lubrication oil supply path is shared by ball bearings and other peripheral components, the effect of reducing the amount of lubricant supply will spread to the peripheral components, and supply of lubricant will be sufficient. This could have an adverse effect on the lubrication of peripheral parts. Further, when a crown-shaped cage is used as the cage, there is a problem that the lubricating oil supplied to the bearing is greatly agitated not only by the balls but also by the claw pieces, thereby increasing the agitation resistance.
本発明は、前述した課題に鑑みてなされたものであり、その目的は、強制潤滑される軸受の動摩擦トルクを低減し、組み込まれた装置全体の効率向上を図ることができる玉軸受及び支持構造を提供することにある。 The present invention has been made in view of the above-described problems, and an object of the present invention is to reduce the dynamic friction torque of a bearing that is forcibly lubricated and to improve the efficiency of the entire incorporated apparatus and a support structure. Is to provide.
本発明の上記目的は、下記の構成により達成される。
(1) 内輪と、外輪と、前記内外輪間に転動自在に配設された複数の玉と、前記玉をポケット内に回動自在に収容する樹脂製の冠形保持器と、を備え、軸方向から潤滑油が供給されて強制潤滑される玉軸受であって、
前記玉の側方且つ前記内外輪間に設けられたシールド板が、前記玉に対して前記潤滑油の供給方向上流側に配置され、
前記シールド板の内周部は、軸方向内側に折り曲げられ、前記内輪の外周面とラビリンス隙間を設けて近接配置され、
前記内輪の外周面の軸方向端部には、溝が設けられ、
前記シールド板の内周部は、前記溝と前記ラビリンス隙間を設けて近接配置され、
前記ラビリンス隙間は、前記内輪の肩部よりも径方向内方に位置し、
前記冠形保持器の円環部は、前記玉に対して前記潤滑油の供給方向下流側に配置されることを特徴とする玉軸受。
(2) 前記玉の側方且つ前記玉に対して前記潤滑油の供給方向下流側は、実質的に開放状態であることを特徴とする(1)に記載の玉軸受。
(3) 前記内輪及び前記外輪は、前記玉の側方且つ前記玉に対して前記潤滑油の供給方向下流側に、肩部を有さないことを特徴とする(1)又は(2)に記載の玉軸受。
(4) 回転軸に外嵌される内輪と、ハウジングに内嵌される外輪と、前記内外輪間に転動自在に配設された複数の玉と、前記玉をポケット内に回動自在に収容する樹脂製の冠形保持器と、を備え、軸方向から潤滑油が供給されて強制潤滑される玉軸受を有して、前記回転軸を支持する支持構造であって、
前記玉の側方且つ前記内外輪間に設けられたシールド板が、前記玉に対して前記潤滑油の供給方向上流側に配置され、
前記シールド板の内周部は、軸方向内側に折り曲げられ、前記内輪の外周面とラビリンス隙間を設けて近接配置され、
前記内輪の外周面の軸方向端部には、溝が設けられ、
前記シールド板の内周部は、前記溝と前記ラビリンス隙間を設けて近接配置され、
前記ラビリンス隙間は、前記内輪の肩部よりも径方向内方に位置し、
前記冠形保持器の円環部は、前記玉に対して前記潤滑油の供給方向下流側に配置されることを特徴とする支持構造。
(5) 前記玉の側方且つ前記玉に対して前記潤滑油の供給方向下流側は、実質的に開放状態であることを特徴とする(4)に記載の支持構造。
(6) 前記内輪及び前記外輪は、前記玉の側方且つ前記玉に対して前記潤滑油の供給方向下流側に、肩部を有さないことを特徴とする(4)又は(5)に記載の支持構造。
The above object of the present invention can be achieved by the following constitution.
(1) An inner ring, an outer ring, a plurality of balls rotatably disposed between the inner and outer rings, and a resin crown-shaped cage that rotatably accommodates the balls in a pocket. A ball bearing forcibly lubricated by supplying lubricating oil from the axial direction,
A shield plate provided on the side of the ball and between the inner and outer rings is arranged on the upstream side in the supply direction of the lubricant with respect to the ball,
The inner peripheral portion of the shield plate is bent inward in the axial direction, and is disposed close to the outer peripheral surface of the inner ring with a labyrinth gap,
A groove is provided at an axial end of the outer peripheral surface of the inner ring,
The inner peripheral portion of the shield plate is disposed adjacent to the groove and the labyrinth gap,
The labyrinth gap is located radially inward from the shoulder of the inner ring,
The ball bearing is characterized in that the annular portion of the crown-shaped cage is disposed downstream of the ball in the lubricating oil supply direction.
(2) The ball bearing according to (1), characterized in that the side of the ball and the downstream side in the supply direction of the lubricating oil with respect to the ball are substantially open.
(3) According to (1) or (2), the inner ring and the outer ring do not have shoulders on the side of the ball and on the downstream side of the ball in the supply direction of the lubricant. The ball bearing described.
(4) An inner ring fitted on the rotating shaft, an outer ring fitted in the housing, a plurality of balls arranged so as to roll between the inner and outer rings, and the balls can be rotated in a pocket. A resin-made crown-shaped cage that has a ball bearing that is supplied with lubricating oil from the axial direction and is forcedly lubricated to support the rotating shaft,
A shield plate provided on the side of the ball and between the inner and outer rings is arranged on the upstream side in the supply direction of the lubricant with respect to the ball,
The inner peripheral portion of the shield plate is bent inward in the axial direction, and is disposed close to the outer peripheral surface of the inner ring with a labyrinth gap,
A groove is provided at an axial end of the outer peripheral surface of the inner ring,
The inner peripheral portion of the shield plate is disposed adjacent to the groove and the labyrinth gap,
The labyrinth gap is located radially inward from the shoulder of the inner ring,
The support structure according to claim 1, wherein an annular portion of the crown-shaped cage is disposed on the downstream side in the lubricating oil supply direction with respect to the ball.
(5) The support structure according to (4), characterized in that the side of the ball and the downstream side in the supply direction of the lubricating oil with respect to the ball are substantially open.
(6) According to (4) or (5), the inner ring and the outer ring do not have shoulder portions on the side of the ball and on the downstream side in the lubricant supply direction with respect to the ball. The support structure as described.
本発明の玉軸受及び支持構造によれば、内外輪間に設けられたシールド板が、玉に対して潤滑油の供給方向上流側に配置されているので、必要以上に多量の潤滑油が玉軸受の内部に流入するのを防止することができ、冠形保持器の爪部や玉によって潤滑油が攪拌されることで生じるドラッグトルクを大幅に低減することができる。また、潤滑油の供給経路が玉軸受と他の周辺部品に共用されている場合、シールド板によって玉軸受に流入する潤滑油の供給量を制限して周辺部品へ導き、該周辺部品を十分に潤滑することが可能となる。 According to the ball bearing and the support structure of the present invention, since the shield plate provided between the inner and outer rings is arranged on the upstream side of the supply direction of the lubricating oil with respect to the balls, a larger amount of lubricating oil than necessary is required. It is possible to prevent the oil from flowing into the bearing, and to greatly reduce the drag torque generated when the lubricating oil is stirred by the claws and balls of the crown-shaped cage. Also, when the lubrication oil supply path is shared by the ball bearing and other peripheral components, the supply amount of the lubricating oil flowing into the ball bearing is limited by the shield plate and guided to the peripheral components. It becomes possible to lubricate.
従って、玉軸受の動摩擦トルクを低減することができ、自動車の変速機等、玉軸受が組み込まれる装置全体の効率を向上させて燃費を向上させることができる。損失トルクの低減は、小型の玉軸受だけでなく、内径が100mmを超えるような大型玉軸受においても有効である。 Therefore, the dynamic friction torque of the ball bearing can be reduced, and the efficiency of the entire apparatus in which the ball bearing is incorporated, such as a transmission of an automobile, can be improved to improve fuel efficiency. Reduction of the loss torque is effective not only in a small ball bearing but also in a large ball bearing having an inner diameter exceeding 100 mm.
更に、冠形保持器の円環部が、玉に対して潤滑油の供給方向下流側に配置されているので、潤滑油の攪拌による損失トルクを更に低減することが可能となる。 Furthermore, since the annular portion of the crown-shaped cage is disposed downstream of the balls in the direction of supply of the lubricating oil, it is possible to further reduce the torque loss due to the stirring of the lubricating oil.
以下、本発明に係る玉軸受の実施形態を図面に基づいて詳細に説明する。図1に示すように、玉軸受10は、内周面に外輪軌道面11aを有する外輪11と、外周面に内輪軌道面12aを有する内輪12と、これら外輪軌道面11aと内輪軌道面12aとの間に転動自在に設けられた複数の玉13と、玉13によって案内され、外輪11の内周面と内輪12の外周面との間に設けられて複数の玉13を回転自在に保持する合成樹脂製の冠形保持器20と、外輪11の内周面の軸方向一端部に設けられた溝11bに固定された金属製のシールド板14と、を備える。
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a ball bearing according to the present invention will be described in detail based on the drawings. As shown in FIG. 1, the ball bearing 10 includes an
冠形保持器20は、図2に示すように、円環部21と、円環部21の円周方向に間隔をあけて複数箇所から軸方向一方側へ突出する複数の爪部22a、22bと、を備える。円周方向に隣り合う爪部22a、22bの対向面と、これら対向面間の円環部21の軸方向側面は、協働してポケット23を形成し、玉13を回動自在に保持する。円環部21に所定の等間隔で設けられた各ポケット23には、玉13が一対の爪部22a、22bの開口側から押し込まれ、爪部22a、22bを弾性変形させて嵌め込まれる。
As shown in FIG. 2, the crown-
冠形保持器20の材料としては特に限定されず、例えば、ポリアミド合成樹脂や、熱可塑性合成樹脂等、種々の合成樹脂の使用が可能であり、必要に応じてガラス繊維やカーボン繊維等の強化繊維を含有させて強度を向上させ、高温高速における変形、損傷を防止するようにしてもよい。冠形保持器20は、自己潤滑性及び低摩擦特性に優れていることから、摩擦損失トルクの低減に有効である。
The material of the crown-
シールド板14は、例えば、金属薄板を略円環状に形成したものであり、その外周部14aは、外輪11の内周面の軸方向端部に設けられた溝11bに圧入・固定され、その内周部14bは、軸方向に折り曲げられ、内輪12の外周面の軸方向端部に設けられた溝12bとラビリンス隙間Cを設けて近接配置されている。これにより、シールド板14の内周部14bは、内輪12の肩部12cよりも径方向内方に位置する。尚、シールド板14は、金属製の芯材をゴム、合成樹脂等の弾性材で被覆して全体円環状に形成してもよい。
The
図1に示すように、玉軸受10は、シールド板14と冠形保持器20の円環部21とが、玉13を挟んで互いに反対側となるように組み付けられる。即ち、シールド板14が玉13に対して潤滑油の供給方向(矢印A方向)上流側に配置され、且つ冠形保持器20の円環部21が玉13に対して潤滑油の供給方向下流側に配置されるように、ハウジング1に外輪11が内嵌され、回転軸2に内輪12が外嵌されて、玉軸受10は自動車の変速機等の装置に組み込まれる。このとき、ハウジング1と回転軸2との間の空間は、潤滑油を供給・排出するための供給路16及び排出路17として作用する。
As shown in FIG. 1, the ball bearing 10 is assembled such that the
そして、潤滑油が、潤滑油タンク(図示せず)から供給路16を介して玉軸受10の側方(矢印A方向)から供給されると、潤滑油は、シールド板14の内周部14bと溝12bとの隙間Cから玉軸受10の内部に流入し、玉軸受10の回転に伴って潤滑油が冠形保持器20の爪部22a、22bや玉13によって攪拌される。
When the lubricating oil is supplied from the side of the ball bearing 10 (in the direction of arrow A) from the lubricating oil tank (not shown) via the
このとき、シールド板14は、必要以上に多量の潤滑油が玉軸受10の内部に流入するのを防止するので、冠形保持器20の爪部22a、22bや玉13によって攪拌される潤滑油量が制限され、潤滑油の攪拌に伴って生じるドラッグトルクは小さい。
At this time, since the
潤滑油は、外輪11、内輪12、玉13、及び冠形保持器20の摺動面を潤滑した後、排出路17に排出されるが、潤滑油の供給方向下流側に配置される冠形保持器20の円環部21による潤滑油の攪拌作用はほとんどなく、これによる損失トルクは小さい。
The lubricating oil lubricates the sliding surfaces of the
また、合成樹脂製の冠形保持器20は、自己潤滑性及び低摩擦特性に優れているので、玉13との摩擦抵抗が小さく摩擦損失トルクが小さい。
Further, since the crown-shaped
上記したように、潤滑油の攪拌に伴って生じるドラッグトルクや各部の摩擦トルクを小さくして玉軸受10の動摩擦トルクを低減させ、自動車の変速機等の玉軸受10が組み込まれた機械装置の効率を向上させることができる。
As described above, the drag torque generated with the agitation of the lubricating oil and the friction torque of each part are reduced to reduce the dynamic friction torque of the
更に、潤滑油の供給路16が、他の周辺部品(図示せず)の供給路と共用されて潤滑油が該周辺部品へも供給される場合には、シールド板14によって玉軸受10の内部に流入する潤滑油の供給量が制限されているので、該周辺部品へ十分な量の潤滑油を供給することができ、潤滑性能を良好に維持することができる。
Further, when the lubricating
尚、本発明は、前述した実施形態に限定されるものではなく、適宜、変形、改良、等が可能である。
本実施形態では、冠形保持器は玉案内方式としたが、外輪、或は内輪案内のいずれであってもよい。また、シールド板の形状や大きさは、潤滑油の供給量に応じて適宜設計されればよい。
In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably.
In this embodiment, the crown-shaped cage is a ball guide system, but it may be an outer ring or an inner ring guide. The shape and size of the shield plate may be appropriately designed according to the supply amount of the lubricating oil.
10 玉軸受
11 外輪
12 内輪
13 玉
14 シールド板
20 合成樹脂製冠形保持器
21 円環部
23 ポケット
DESCRIPTION OF
Claims (6)
前記玉の側方且つ前記内外輪間に設けられたシールド板が、前記玉に対して前記潤滑油の供給方向上流側に配置され、
前記シールド板の内周部は、軸方向内側に折り曲げられ、前記内輪の外周面とラビリンス隙間を設けて近接配置され、
前記内輪の外周面の軸方向端部には、溝が設けられ、
前記シールド板の内周部は、前記溝と前記ラビリンス隙間を設けて近接配置され、
前記ラビリンス隙間は、前記内輪の肩部よりも径方向内方に位置し、
前記冠形保持器の円環部は、前記玉に対して前記潤滑油の供給方向下流側に配置されることを特徴とする玉軸受。 An inner ring, an outer ring, a plurality of balls rotatably arranged between the inner and outer rings, and a resin crown-shaped cage that rotatably accommodates the balls in a pocket, A ball bearing forcibly lubricated by being supplied with lubricating oil from
A shield plate provided on the side of the ball and between the inner and outer rings is arranged on the upstream side in the supply direction of the lubricant with respect to the ball,
The inner peripheral portion of the shield plate is bent inward in the axial direction, and is disposed close to the outer peripheral surface of the inner ring with a labyrinth gap,
A groove is provided at an axial end of the outer peripheral surface of the inner ring,
The inner peripheral portion of the shield plate is disposed adjacent to the groove and the labyrinth gap,
The labyrinth gap is located radially inward from the shoulder of the inner ring,
The ball bearing is characterized in that the annular portion of the crown-shaped cage is disposed downstream of the ball in the lubricating oil supply direction.
前記玉の側方且つ前記内外輪間に設けられたシールド板が、前記玉に対して前記潤滑油の供給方向上流側に配置され、
前記シールド板の内周部は、軸方向内側に折り曲げられ、前記内輪の外周面とラビリンス隙間を設けて近接配置され、
前記内輪の外周面の軸方向端部には、溝が設けられ、
前記シールド板の内周部は、前記溝と前記ラビリンス隙間を設けて近接配置され、
前記ラビリンス隙間は、前記内輪の肩部よりも径方向内方に位置し、
前記冠形保持器の円環部は、前記玉に対して前記潤滑油の供給方向下流側に配置されることを特徴とする支持構造。 An inner ring fitted on the rotation shaft, an outer ring fitted in the housing, a plurality of balls rotatably arranged between the inner and outer rings, and a resin that rotatably accommodates the balls in a pocket A support structure for supporting the rotating shaft, comprising a ball bearing that is supplied with lubricating oil from the axial direction and is forcibly lubricated.
A shield plate provided on the side of the ball and between the inner and outer rings is arranged on the upstream side in the supply direction of the lubricant with respect to the ball,
The inner peripheral portion of the shield plate is bent inward in the axial direction, and is disposed close to the outer peripheral surface of the inner ring with a labyrinth gap,
A groove is provided at an axial end of the outer peripheral surface of the inner ring,
The inner peripheral portion of the shield plate is disposed adjacent to the groove and the labyrinth gap,
The labyrinth gap is located radially inward from the shoulder of the inner ring,
The support structure according to claim 1, wherein an annular portion of the crown-shaped cage is disposed on the downstream side in the lubricating oil supply direction with respect to the ball.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012096143A JP2012141064A (en) | 2012-04-20 | 2012-04-20 | Ball bearing and supporting structure |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012096143A JP2012141064A (en) | 2012-04-20 | 2012-04-20 | Ball bearing and supporting structure |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007018440A Division JP5045123B2 (en) | 2007-01-29 | 2007-01-29 | Ball bearing and support structure |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2012141064A true JP2012141064A (en) | 2012-07-26 |
Family
ID=46677514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2012096143A Withdrawn JP2012141064A (en) | 2012-04-20 | 2012-04-20 | Ball bearing and supporting structure |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2012141064A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022202924A1 (en) * | 2021-03-25 | 2022-09-29 | Ntn株式会社 | Bearing structure for transmission |
JP2023515853A (en) * | 2020-07-01 | 2023-04-14 | ハンオン システムズ | Scroll compressor for compressing refrigerant and method for concentrating and distributing oil |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001027253A (en) * | 1999-07-14 | 2001-01-30 | Nsk Ltd | Rolling bearing |
JP2002061657A (en) * | 2000-05-31 | 2002-02-28 | Ntn Corp | Air oil lubrication structure for rolling bearing |
JP2004011830A (en) * | 2002-06-10 | 2004-01-15 | Nsk Ltd | Roller bearing and fan motor using it |
WO2005045269A1 (en) * | 2003-11-07 | 2005-05-19 | Jtekt Corporation | Oil lubrication-type rolling bearing device |
JP2006071016A (en) * | 2004-09-02 | 2006-03-16 | Nsk Ltd | Retainer for ball bearing |
JP2006250268A (en) * | 2005-03-11 | 2006-09-21 | Jtekt Corp | Rolling bearing and cam shaft device |
JP2007177858A (en) * | 2005-12-27 | 2007-07-12 | Ntn Corp | Ball bearing and ball bearing assembly |
-
2012
- 2012-04-20 JP JP2012096143A patent/JP2012141064A/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001027253A (en) * | 1999-07-14 | 2001-01-30 | Nsk Ltd | Rolling bearing |
JP2002061657A (en) * | 2000-05-31 | 2002-02-28 | Ntn Corp | Air oil lubrication structure for rolling bearing |
JP2004011830A (en) * | 2002-06-10 | 2004-01-15 | Nsk Ltd | Roller bearing and fan motor using it |
WO2005045269A1 (en) * | 2003-11-07 | 2005-05-19 | Jtekt Corporation | Oil lubrication-type rolling bearing device |
JP2006071016A (en) * | 2004-09-02 | 2006-03-16 | Nsk Ltd | Retainer for ball bearing |
JP2006250268A (en) * | 2005-03-11 | 2006-09-21 | Jtekt Corp | Rolling bearing and cam shaft device |
JP2007177858A (en) * | 2005-12-27 | 2007-07-12 | Ntn Corp | Ball bearing and ball bearing assembly |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2023515853A (en) * | 2020-07-01 | 2023-04-14 | ハンオン システムズ | Scroll compressor for compressing refrigerant and method for concentrating and distributing oil |
US11953002B2 (en) | 2020-07-01 | 2024-04-09 | Hanon Systems | Scroll compressor for compressing a refrigerant and method for oil enrichment and distribution |
WO2022202924A1 (en) * | 2021-03-25 | 2022-09-29 | Ntn株式会社 | Bearing structure for transmission |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9726224B2 (en) | Tapered roller bearing | |
US8939649B2 (en) | Rolling bearing | |
US20120189235A1 (en) | Bearing race for a rolling-element bearing | |
US10570962B2 (en) | Sealed bearing | |
US9353795B2 (en) | Rolling bearing | |
EP2055972A3 (en) | Arrangement with two lubricated rolling element bearings for supporting a pinion shaft | |
JP2013204679A (en) | Rolling bearing | |
JP2008082298A (en) | Supercharger | |
EP2390520A2 (en) | Roller bearing | |
JP2017198298A (en) | Crown type holder and ball bearing | |
JP2011256914A (en) | Deep groove ball bearing | |
JP2012141064A (en) | Ball bearing and supporting structure | |
JP2004324854A (en) | Roller bearing | |
JP5045123B2 (en) | Ball bearing and support structure | |
JP2009079497A (en) | Supercharger | |
JP6263808B2 (en) | Ball bearing | |
CN112013019A (en) | Roller bearing assembly and aircraft engine | |
WO2018159755A1 (en) | Rolling bearing and bearing structure having same | |
CN112997018B (en) | Cylindrical roller bearing | |
JP4126529B2 (en) | Tapered roller bearing | |
CN211574046U (en) | Deep groove ball bearing of electric riveting phenolic aldehyde frame | |
JP7314701B2 (en) | deep groove ball bearing | |
US20090028486A1 (en) | Tapered roller bearing | |
JP2015064086A (en) | Crown type cage for ball bearing and ball bearing | |
KR102490414B1 (en) | Lubrication-free bearing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20120420 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20130314 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20130319 |
|
A761 | Written withdrawal of application |
Free format text: JAPANESE INTERMEDIATE CODE: A761 Effective date: 20130509 |