JPH0932859A - Lubricating device for rolling bearing - Google Patents
Lubricating device for rolling bearingInfo
- Publication number
- JPH0932859A JPH0932859A JP18287895A JP18287895A JPH0932859A JP H0932859 A JPH0932859 A JP H0932859A JP 18287895 A JP18287895 A JP 18287895A JP 18287895 A JP18287895 A JP 18287895A JP H0932859 A JPH0932859 A JP H0932859A
- Authority
- JP
- Japan
- Prior art keywords
- lubricating oil
- oil
- rolling bearing
- tapered roller
- roller 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.)
- Pending
Links
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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
- F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明に係る転がり軸受用潤滑
装置は、航空機及び自動車等、複雑な力が加わる状態で
使用される機械装置の回転軸の回転支持部に組み込んだ
状態で使用される。BACKGROUND OF THE INVENTION The lubrication device for rolling bearings according to the present invention is used in a state in which it is incorporated in a rotary support portion of a rotary shaft of a mechanical device such as an aircraft or an automobile which is used in a state where a complicated force is applied. .
【０００２】[0002]
【従来の技術】回転軸１をハウジング２の内側に回転自
在に支持する為に従来から、図４に示す様な構造が一般
的に知られている。回転軸１の外周面の中間部２個所位
置とハウジング２の外周面の中間部２個所位置との間に
は、それぞれ転がり軸受３、３を設けている。又、上記
ハウジング２の底部には油溜４を設け、この油溜４部分
に貯溜した潤滑油５を、ポンプ６により吸入孔８を通じ
て取り出し自在としている。ポンプ６により取り出され
た潤滑油５は、上記ハウジング２の上部に設けられた吐
出孔７からこのハウジング２内に吐出され、上記各転が
り軸受３、３に注がれる。この結果、これら各転がり軸
受３、３が潤滑される。特に、各転がり軸受３、３がテ
ーパころ軸受の場合には、転がり軸受３、３自体が流体
を軸方向に流通させるポンプ作用を有するので、これら
各転がり軸受３、３内部への潤滑油の取り込みが良好に
行なわれる。2. Description of the Related Art In order to rotatably support a rotary shaft 1 inside a housing 2, a structure as shown in FIG. 4 has been generally known. Rolling bearings 3, 3 are provided between two positions of the intermediate portion of the outer peripheral surface of the rotary shaft 1 and two positions of the intermediate portion of the outer peripheral surface of the housing 2. Further, an oil sump 4 is provided at the bottom of the housing 2, and the lubricating oil 5 stored in this oil sump 4 portion can be taken out by the pump 6 through the suction hole 8. The lubricating oil 5 taken out by the pump 6 is discharged into the housing 2 through a discharge hole 7 provided in the upper portion of the housing 2 and poured into the rolling bearings 3, 3. As a result, these rolling bearings 3, 3 are lubricated. In particular, when each of the rolling bearings 3 and 3 is a tapered roller bearing, the rolling bearings 3 and 3 themselves have a pumping action for circulating the fluid in the axial direction. Good uptake.
【０００３】[0003]
【発明が解決しようとする課題】上述の様に構成されて
各転がり軸受３、３を潤滑する転がり軸受用潤滑装置
は、油溜４部分に十分な量の潤滑油５が存在すれば、特
に問題を生じない。これに対して、上記油溜４部分に存
在する潤滑油５の量が少なくなると、使用状態によって
は上記各転がり軸受３、３に供給される潤滑油５が不足
する可能性がある。即ち、回転軸１を設けた航空機或は
自動車等の進路変更に伴って、上記油溜４に貯溜された
潤滑油５に遠心力が加わると、この遠心力の方向によっ
ては、ポンプ６に通じる吸入孔８部分に潤滑油５が存在
しなくなる可能性がある。The rolling bearing lubrication device configured as described above for lubricating the rolling bearings 3 and 3 is particularly preferable if a sufficient amount of lubricating oil 5 is present in the oil sump 4 portion. Does not cause a problem. On the other hand, when the amount of the lubricating oil 5 existing in the oil sump 4 portion decreases, the lubricating oil 5 supplied to the rolling bearings 3 and 3 may be insufficient depending on the usage state. That is, when a centrifugal force is applied to the lubricating oil 5 stored in the oil sump 4 as the course of an aircraft or an automobile provided with the rotating shaft 1 is changed, the lubricating oil 5 is communicated with the pump 6 depending on the direction of the centrifugal force. The lubricating oil 5 may not exist in the suction hole 8 portion.
【０００４】この様に、吸入孔８部分に潤滑油５が存在
しなくなると、吐出孔７からの潤滑油５の吐出が一時的
に途絶え、上記各転がり軸受３、３への潤滑油５の供給
が行なわれなくなる。この様な原因による潤滑油５の供
給停止は短時間のみではあるが、その間に回転軸１が高
速で回転し続けた場合には、上記各転がり軸受３、３に
焼き付き等の損傷が発生する可能性がある。転がり軸受
３、３が玉軸受であれば、潤滑油の供給停止から焼き付
き等の重大な損傷に至るまでの時間が比較的長いが、こ
ろ軸受、特にテーパころ軸受の場合にはこの時間が短い
為、対応が望まれている。As described above, when the lubricating oil 5 does not exist in the suction hole 8 portion, the discharge of the lubricating oil 5 from the discharge hole 7 is temporarily interrupted, and the lubricating oil 5 to each of the rolling bearings 3 and 3 is temporarily stopped. Supply is cut off. Although the supply of the lubricating oil 5 is stopped only for a short time due to such a cause, if the rotary shaft 1 continues to rotate at a high speed during that time, damage such as seizure occurs on each of the rolling bearings 3 and 3. there is a possibility. If the rolling bearings 3 and 3 are ball bearings, the time from the supply of the lubricating oil to serious damage such as seizure is relatively long, but this time is short in the case of roller bearings, especially tapered roller bearings. Therefore, correspondence is desired.
【０００５】この様な事情に鑑みて従来から、例えば特
開昭５４−８９１４７号公報に記載されている様に、転
動体や軌道輪の形状を工夫する事により、潤滑不良の場
合に重大な損傷に至るまでの時間を長くする事が試みら
れている。しかしながら、単に転動体や軌道輪の形状を
工夫しただけでは、上記時間を十分に長くする事ができ
ない。本発明の転がり軸受用潤滑装置は、この様な事情
に鑑みて、ポンプ６等の潤滑油供給手段からの潤滑油供
給が短時間停止した程度では上記各転がり軸受３、３に
焼き付き等の損傷が発生するのを防止すべく、発明した
ものである。In view of such circumstances, conventionally, as disclosed in, for example, Japanese Patent Laid-Open No. 54-89147, by devising the shapes of rolling elements and races, it is important in the case of poor lubrication. Attempts have been made to lengthen the time to damage. However, the above time cannot be sufficiently lengthened simply by devising the shapes of the rolling elements and the bearing rings. In view of such circumstances, the rolling bearing lubrication apparatus of the present invention has damages such as seizure on each of the rolling bearings 3 and 3 when the lubrication oil supply from the lubrication oil supply means such as the pump 6 is stopped for a short time. The invention was invented in order to prevent the occurrence of.
【０００６】[0006]
【課題を解決するための手段】本発明の転がり軸受用潤
滑装置は、前述した従来の転がり軸受用潤滑装置と同様
に、内周面を有するハウジングと、外周面を有しこのハ
ウジングに対して相対回転する軸と、上記内周面と外周
面との間に設けられた転がり軸受と、この転がり軸受に
向けて潤滑油を注ぐ潤滑油供給手段とを備える。The rolling bearing lubrication device of the present invention is similar to the above-described conventional rolling bearing lubrication device in that it has a housing having an inner peripheral surface and an outer peripheral surface. A relative rotating shaft, a rolling bearing provided between the inner peripheral surface and the outer peripheral surface, and lubricating oil supply means for pouring lubricating oil toward the rolling bearing are provided.
【０００７】特に、本発明の転がり軸受用潤滑装置に於
いては、保油空間と捕集通路と給油孔とを備える。この
うちの保油空間は、上記転がり軸受に隣接して設けられ
て、上記転がり軸受を短時間潤滑できるだけの潤滑油を
保有できる容積を有する。又、上記捕集通路は、上記潤
滑油供給手段から注がれる潤滑油を受け取り可能な位置
にその一端を、上記保油空間にその他端を、それぞれ開
口させている。更に、上記給油孔は、上記保油空間にそ
の一端を、上記転がり軸受を構成する転動体設置部分に
対向する位置にその他端を、それぞれ開口させている。In particular, the rolling bearing lubricating device of the present invention includes an oil retaining space, a collecting passage, and an oil supply hole. The oil-retaining space is provided adjacent to the rolling bearing and has a volume capable of holding sufficient lubricating oil to lubricate the rolling bearing for a short time. Further, one end of the collection passage is opened at a position where the lubricating oil poured from the lubricating oil supply means can be received, and the other end is opened at the oil retaining space. Further, the oil supply hole has one end opened to the oil retaining space and the other end opened to a position facing the rolling element installation portion constituting the rolling bearing.
【０００８】尚、好ましくは、上記捕集通路の面積を給
油孔の面積よりも広くする。この理由は、捕集通路から
保油空間に取り込まれる潤滑油の量を給油孔から吐出さ
れる潤滑油の量よりも多くなる傾向とする為である。こ
の様にすれば、上記潤滑油供給手段から転がり軸受に向
けて注がれる潤滑油の量が十分である限り、上記保油空
間内には、常に十分な量の潤滑油が貯溜されたままの状
態になる。Preferably, the area of the collecting passage is larger than the area of the oil supply hole. The reason for this is that the amount of lubricating oil taken into the oil retaining space from the collection passage tends to be larger than the amount of lubricating oil discharged from the oil supply hole. With this configuration, as long as the amount of lubricating oil poured from the lubricating oil supply means toward the rolling bearing is sufficient, a sufficient amount of lubricating oil is always stored in the oil retaining space. It becomes the state of.
【０００９】又、上述の様な保油空間と捕集通路と給油
孔とは、ハウジングの内周面部分に、このハウジングと
一体に形成したり、或は転がり軸受を構成する外輪又は
内輪の軸方向端面に、当該外輪又は内輪と一体に形成し
たりできる。更には、ハウジング、外輪、内輪の何れの
部材とも別体に形成された円環状部材を、これら何れか
の部材に嵌合固定する等により、上記保油空間と捕集通
路と給油孔とを構成する事もできる。Further, the oil retaining space, the collecting passage, and the oil supply hole as described above are formed on the inner peripheral surface portion of the housing integrally with the housing, or of the outer ring or the inner ring forming the rolling bearing. The axial end surface may be formed integrally with the outer ring or the inner ring. Furthermore, by fitting and fixing an annular member formed separately from any member of the housing, the outer ring, and the inner ring to any one of these members, the oil retaining space, the collecting passage, and the oil supply hole are formed. It can also be configured.
【００１０】[0010]
【作用】上述の様に構成される本発明の転がり軸受用潤
滑装置は、次の様に作用して、転がり軸受に対し常に潤
滑油を供給し続ける。潤滑油供給手段から転がり軸受に
注がれる潤滑油の量が十分である場合には、この潤滑油
のうちの一部が保油空間を通る事なく、直接転がり軸受
内に送り込まれ、この転がり軸受を潤滑する。又、上記
潤滑油のうちの残部は、捕集通路を通じて上記保油空間
に取り込まれ、給油孔から上記転がり軸受内に送り込ま
れる。従って、この転がり軸受の潤滑が十分に行なわれ
る。The lubricating device for a rolling bearing according to the present invention having the above-described structure operates in the following manner to constantly supply the lubricating oil to the rolling bearing. If the amount of lubricating oil poured from the lubricating oil supply means to the rolling bearing is sufficient, part of this lubricating oil will be sent directly into the rolling bearing without passing through the oil retaining space, and this rolling oil Lubricate the bearings. The remaining part of the lubricating oil is taken into the oil retaining space through the collecting passage and sent into the rolling bearing through the oil supply hole. Therefore, the rolling bearing is sufficiently lubricated.
【００１１】次に、上記潤滑油供給手段から転がり軸受
に注がれる潤滑油の量が不足若しくは零になった場合に
は、上記保油空間に取り込まれていた潤滑油が、上記給
油孔から上記転がり軸受内に送り込まれる。この結果、
転がり軸受の最低限の潤滑が行なわれる。潤滑油供給手
段から転がり軸受に注がれる潤滑油の量が不足若しくは
零になる時間は短時間であるので、上記保油空間からの
潤滑油供給に基づき、上記転がり軸受に焼き付き等の損
傷が発生する事を防止できる。尚、上記潤滑油供給手段
からの潤滑油の供給停止がどの程度継続した場合でも、
転がり軸受が損傷するのを防止できるかは、上記保油空
間の容積と給油孔の面積との関係で任意に定める事がで
きる。Next, when the amount of the lubricating oil poured from the lubricating oil supply means to the rolling bearing becomes insufficient or becomes zero, the lubricating oil taken into the oil retaining space is discharged from the oil supply hole. It is fed into the rolling bearing. As a result,
Minimal lubrication of rolling bearings. Since the amount of lubricating oil that is poured from the lubricating oil supply means to the rolling bearing becomes insufficient or becomes zero for a short period of time, damage to the rolling bearing such as seizure may occur due to the lubricating oil supply from the oil retaining space. It can be prevented from occurring. In addition, no matter how long the supply of the lubricating oil from the lubricating oil supply unit is stopped,
Whether the rolling bearing can be prevented from being damaged can be arbitrarily determined by the relationship between the volume of the oil retaining space and the area of the oil supply hole.
【００１２】[0012]
【実施例】図１〜２は本発明の第一実施例を示してい
る。ハウジング２の内周面中間部には嵌合段部９を形成
し、この嵌合段部９に、転がり軸受の一種であるテーパ
ころ軸受１０を構成する外輪１１を、内嵌固定してい
る。上記ハウジング２の内側に挿通された回転軸１の中
間部外周面には、上記テーパころ軸受１０を構成する内
輪１２を、外嵌固定している。そして、この内輪１２の
外周面に形成した内輪軌道と上記外輪１１の内周面に形
成した外輪軌道との間に転動体である複数のテーパころ
１３、１３を設けて、上記テーパころ軸受１０を構成
し、上記ハウジング２の内側に回転軸１を回転自在に支
持している。このテーパころ軸受１０の回転時には、周
知のポンプ作用によって、後述する潤滑油を含む流体
を、上記複数のテーパころ１３、１３の小径側端面から
大径側端面に向け、図１で左から右に流通させる。1 and 2 show a first embodiment of the present invention. A fitting step portion 9 is formed in the intermediate portion of the inner peripheral surface of the housing 2, and an outer ring 11 constituting a tapered roller bearing 10 which is a type of rolling bearing is fitted and fixed to the fitting step portion 9. . An inner ring 12 that constitutes the tapered roller bearing 10 is externally fitted and fixed to the outer peripheral surface of the intermediate portion of the rotary shaft 1 that is inserted inside the housing 2. A plurality of tapered rollers 13, 13 as rolling elements are provided between the inner ring raceway formed on the outer peripheral surface of the inner ring 12 and the outer ring raceway formed on the inner peripheral surface of the outer ring 11 to provide the tapered roller bearing 10 The rotary shaft 1 is rotatably supported inside the housing 2. When the tapered roller bearing 10 rotates, a fluid containing lubricating oil, which will be described later, is caused to flow from the left side to the right side in FIG. Distribute to.
【００１３】又、上記ハウジング２の中央部上面には吐
出孔７（前記図４参照。図１には省略。）を設け、同じ
く底面には油溜４（図４）を設けている。そして、この
油溜４からポンプ６（図４）に吸引した潤滑油を、上記
吐出孔７から吐出自在としている。この吐出孔７から吐
出された潤滑油は、上記ハウジング２の天井面１４に沿
って流れ、上記テーパころ軸受１０に注がれる。即ち、
上記吐出孔７と油溜４とポンプ６とが、上記テーパころ
軸受１０に向けて潤滑油を注ぐ潤滑油供給手段を構成す
る。A discharge hole 7 (see FIG. 4 described above, omitted in FIG. 1) is provided on the upper surface of the central portion of the housing 2, and an oil sump 4 (FIG. 4) is also provided on the bottom surface. Then, the lubricating oil sucked from the oil sump 4 to the pump 6 (FIG. 4) can be freely discharged from the discharge hole 7. The lubricating oil discharged from the discharge hole 7 flows along the ceiling surface 14 of the housing 2 and is poured into the tapered roller bearing 10. That is,
The discharge hole 7, the oil sump 4, and the pump 6 constitute a lubricating oil supply means for pouring lubricating oil toward the tapered roller bearing 10.
【００１４】又、上記ハウジング２の内周面で前記嵌合
段部９に隣接する部分には、内向フランジ状の鍔部１５
が、全周に亙って形成されている。この鍔部１５の内側
には、この鍔部１５の片側面（図１の右側面）に開口す
る凹部１６を、全周に亙って形成している。そして、上
記鍔部１５の片側面に上記テーパころ軸受１０を構成す
る外輪１１の軸方向端面を突き当てる事で、上記凹部１
６の端部開口を塞いでいる。本実施例の場合、この凹部
１６の内側が保油空間となる。An inward flange-shaped flange portion 15 is provided on a portion of the inner peripheral surface of the housing 2 adjacent to the fitting step portion 9.
However, it is formed all around. Inside the flange portion 15, a concave portion 16 that opens to one side surface (the right side surface in FIG. 1) of the flange portion 15 is formed over the entire circumference. Then, the end portion in the axial direction of the outer ring 11 constituting the tapered roller bearing 10 is brought into contact with one side surface of the flange portion 15 to thereby cause the recess 1
The end opening 6 is closed. In the case of this embodiment, the inside of the recess 16 serves as an oil retaining space.
【００１５】又、上記鍔部１５の他側面（図１の左側
面）の内径側半部には、軸方向に突出する環状突部１７
を、全周に亙り形成している。この環状突部１７の上端
部には、この環状突部１７の上端部外周面を水平方向に
亙り平削する事で、平坦面１８を形成している。又、こ
の平坦面１８の奥端部（図１の右端部）と上記凹部１６
とを、略三日月形の捕集通路１９により連通させてい
る。上記ハウジング２の天井面１４に沿って図１の矢印
α方向に流れた潤滑油は、上記平坦面１８に受け止めら
れ、更に上記捕集通路１９を通じて上記凹部１６内に送
り込まれる（捕集される）。Further, an annular protrusion 17 protruding in the axial direction is formed on the inner side half of the other side surface (left side surface in FIG. 1) of the flange portion 15.
Is formed over the entire circumference. A flat surface 18 is formed on the upper end of the annular projection 17 by planing the outer peripheral surface of the upper end of the annular projection 17 in the horizontal direction. Further, the back end of the flat surface 18 (the right end in FIG. 1) and the recess 16 are
And are connected to each other by a substantially crescent-shaped collection passage 19. The lubricating oil flowing in the direction of the arrow α in FIG. 1 along the ceiling surface 14 of the housing 2 is received by the flat surface 18, and is further fed (collected) into the recess 16 through the collecting passage 19. ).
【００１６】更に、上記鍔部１５の内周面には複数（図
示の例では３個）の給油孔２０、２０を設けている。そ
して、これら複数の給油孔２０、２０により、保油空間
である上記凹部１６の内側と、上記テーパころ軸受１０
を構成するテーパころ１３、１３設置部分に対向する位
置、即ち、外輪１１の内周面と内輪１２の外周面との間
に存在する空間２１の一端（図１の左端）開口の近傍部
分とを通じさせている。これら複数の給油孔２０、２０
のうちの１個は、上記鍔部１５の内周面の下端部に、残
り２個の給油孔２０、２０は上下方向中間部に、それぞ
れ形成している。又、図示の実施例では、上記各給油孔
２０、２０を、上記凹部１６の開口端縁側に開口する切
り欠き状に形成している。切り欠きの開口端は、前記外
輪１１の端面により塞がれる。勿論、これら各給油孔２
０、２０を、上記開口端縁から離れた位置に形成された
円孔としても良い。Further, a plurality (three in the illustrated example) of oil supply holes 20, 20 are provided on the inner peripheral surface of the collar portion 15. The plurality of oil supply holes 20, 20 allow the inside of the recess 16 as an oil retaining space and the tapered roller bearing 10
A position facing the tapered roller 13, 13 installation portion constituting the above, that is, a portion near one end (left end in FIG. 1) opening of the space 21 existing between the inner peripheral surface of the outer ring 11 and the outer peripheral surface of the inner ring 12. Through. These plural oil supply holes 20, 20
One of them is formed at the lower end of the inner peripheral surface of the collar portion 15, and the remaining two oil supply holes 20, 20 are formed at the intermediate portion in the vertical direction. Further, in the illustrated embodiment, each of the oil supply holes 20 and 20 is formed in a notch shape that opens to the opening edge side of the recess 16. The open end of the notch is closed by the end surface of the outer ring 11. Of course, each of these oil supply holes 2
0 and 20 may be circular holes formed at positions apart from the opening edge.
【００１７】尚、好ましくは、上記捕集通路１９の面積
を上記複数の給油孔２０、２０の合計面積よりも広くす
る。この理由は、捕集通路１９から保油空間である凹部
１６内にに取り込まれる潤滑油の量を、給油孔２０、２
０から吐出される潤滑油の量よりも多くなる傾向とする
為である。この様にすれば、前記吐出孔７からテーパこ
ろ軸受１０に向けて注がれる潤滑油の量が十分である限
り、上記凹部１６内に常に十分な量の潤滑油が貯溜され
たままの状態になる。但し、捕集通路１９に向けて潤滑
油が勢い良く注がれ、この捕集通路１９による潤滑油の
取り込みが効率良く行なわれるのであれば、この捕集通
路１９の面積が多少小さくても良い。Preferably, the area of the collecting passage 19 is made larger than the total area of the plurality of oil supply holes 20, 20. The reason for this is that the amount of lubricating oil taken into the recess 16 which is the oil retaining space from the collection passage 19 is determined by the oil supply holes 20, 2
This is because the amount of lubricating oil discharged from 0 tends to increase. With this configuration, as long as the amount of lubricating oil poured from the discharge hole 7 toward the tapered roller bearing 10 is sufficient, a sufficient amount of lubricating oil is always stored in the concave portion 16. become. However, if the lubricating oil is vigorously poured toward the collecting passage 19 and the lubricating oil is taken in efficiently by the collecting passage 19, the area of the collecting passage 19 may be slightly smaller. .
【００１８】上述の様に構成される本発明の転がり軸受
用潤滑装置は、次の様に作用して、テーパころ軸受１０
に対し常に潤滑油を供給し続ける。上記吐出孔７からテ
ーパころ軸受１０に注がれる潤滑油の量が十分である場
合には、この潤滑油のうちの一部が保油空間である凹部
１６を通る事なく、直接テーパころ軸受１０内に送り込
まれ、このテーパころ軸受１０を潤滑する。又、上記潤
滑油のうちの残部は、前記平坦面１８に受け止められ、
この平坦面１８の奥端部から連続する捕集通路１９を通
じて上記凹部１６内に取り込まれる。この様にして凹部
１６内に取り込まれた潤滑油は、重力に基づいて発生す
る圧力により、上記各給油孔２０、２０から前記鍔部１
５の内周面に送り出され、上記テーパころ軸受１０のポ
ンプ作用によって、このテーパころ軸受１０内に送り込
まれる。従って、このテーパころ軸受１０の潤滑が十分
に行なわれる。The rolling bearing lubrication device of the present invention having the above-described structure operates in the following manner to produce the tapered roller bearing 10
Always supply lubricating oil to When the amount of the lubricating oil poured from the discharge hole 7 to the tapered roller bearing 10 is sufficient, a part of this lubricating oil does not pass through the recess 16 which is the oil retaining space, and the tapered roller bearing is directly The taper roller bearing 10 is lubricated by being fed into the inside. The rest of the lubricating oil is received by the flat surface 18,
The flat surface 18 is taken into the recess 16 through a collection passage 19 continuous from the rear end. The lubricating oil taken into the recess 16 in this way is forced out of the respective oil supply holes 20, 20 by the pressure generated based on gravity.
5 is fed to the inner peripheral surface of the tapered roller bearing 10 and pumped into the tapered roller bearing 10 by the pumping action of the tapered roller bearing 10. Therefore, the tapered roller bearing 10 is sufficiently lubricated.
【００１９】尚、上記捕集通路１９の面積を上記複数の
給油孔２０、２０の合計面積よりも広くした場合、上記
吐出孔７からテーパころ軸受１０に注がれる潤滑油の量
が十分であれば、上記凹部１６内には、その上端部にま
で潤滑油が充満した状態になる。従ってこの状態では、
上記平坦面１８の上面に受け止められた潤滑油のうちの
一部のみが、上記捕集通路１９を通じて凹部１６内に取
り込まれる。凹部１６内に取り込まれなかった潤滑油
は、そのまま下方に流下してテーパころ軸受１０内に送
り込まれる。又、図示は省略したが、上記鍔部１５の内
周面上端部に大径の主給油孔を設け、前記捕集通路１９
から凹部１６内に取り込まれら潤滑油のうちの一部が、
この主給油孔を通じて上記テーパころ軸受１０に送り込
まれる様にする事もできる。この様にすれば、通常時に
テーパころ軸受１０に潤滑油をより効率良く送り込め
る。この場合には、上記捕集通路１９の面積を上記複数
の給油孔２０、２０及び主給油孔の合計面積よりも広く
する。When the area of the collecting passage 19 is made larger than the total area of the plurality of oil supply holes 20, 20, the amount of lubricating oil poured from the discharge hole 7 to the tapered roller bearing 10 is sufficient. If so, the upper end of the recess 16 is filled with the lubricating oil. Therefore, in this state,
Only a part of the lubricating oil received on the upper surface of the flat surface 18 is taken into the recess 16 through the collecting passage 19. The lubricating oil that has not been taken into the recess 16 flows downward as it is and is fed into the tapered roller bearing 10. Although not shown in the drawings, a large-diameter main oil supply hole is provided at the upper end of the inner peripheral surface of the collar portion 15, and the collecting passage 19 is provided.
Part of the lubricating oil taken into the recess 16 from
It is also possible to feed the taper roller bearing 10 through the main oil supply hole. By doing so, the lubricating oil can be more efficiently fed to the tapered roller bearing 10 at normal times. In this case, the area of the collection passage 19 is made larger than the total area of the plurality of oil supply holes 20, 20 and the main oil supply hole.
【００２０】次に、上記吐出孔７からテーパころ軸受１
０に注がれる潤滑油の量が不足若しくは零になった場合
には、上記凹部１６に取り込まれていた潤滑油が、上記
給油孔２０、２０から上記テーパころ軸受１０内に送り
込まれる。この結果、テーパころ軸受１０の最低限の潤
滑が行なわれる。上記吐出孔７からテーパころ軸受１０
に注がれる潤滑油の量が不足若しくは零になる時間は短
時間であるので、上記凹部１６からの潤滑油供給に基づ
き、上記テーパころ軸受１０に焼き付き等の損傷が発生
する事を防止できる。尚、上記吐出孔７からの潤滑油の
供給停止がどの程度継続した場合でも、テーパころ軸受
１０が損傷するのを防止できるかは、上記凹部１６の容
積と給油孔２０、２０の合計面積（各給油孔２０、２０
の面積と給油孔２０、２０の数との積）との関係で任意
に定める事ができる。例えば、図１に示した寸法関係
（プロポーション）で、上記給油孔２０、２０の有効直
径を１mmとすれば、１分程度潤滑油の供給が停止した場
合でも、上記テーパころ軸受１０の損傷を防止できる。Next, from the discharge hole 7 to the tapered roller bearing 1
When the amount of lubricating oil poured into 0 becomes insufficient or becomes zero, the lubricating oil taken into the recess 16 is fed into the tapered roller bearing 10 through the oil supply holes 20 and 20. As a result, the minimum lubrication of the tapered roller bearing 10 is performed. From the discharge hole 7 to the tapered roller bearing 10
Since the amount of lubricating oil that is poured into the tank is insufficient or becomes zero for a short time, it is possible to prevent damage such as seizure from occurring in the tapered roller bearing 10 due to the supply of lubricating oil from the recess 16. . Note that, regardless of how long the supply of the lubricating oil from the discharge hole 7 is stopped, the damage of the tapered roller bearing 10 can be prevented by determining the total area of the volume of the recess 16 and the oil supply holes 20, 20 ( Refueling holes 20, 20
The product of the area and the number of the oil supply holes 20, 20) can be arbitrarily determined. For example, in the dimensional relationship (proportion) shown in FIG. 1, if the effective diameter of the oil supply holes 20 and 20 is set to 1 mm, the tapered roller bearing 10 will be damaged even if the supply of lubricating oil is stopped for about 1 minute. It can be prevented.
【００２１】尚、給油孔２０は最低限１個必要である
が、１個のみ設ける場合には、前記鍔部１５の内周面の
下端部に設ける。この理由は、上記凹部１６内の取り込
まれた潤滑油の大部分を、上記テーパころ軸受１０の潤
滑に有効利用する為である。但し、上記給油孔２０、２
０は、図示の様な位置に３個所程度設けるのが好まし
い。この理由は、元々本発明が遠心力の作用に基づく潤
滑不良時にテーパころ軸受１０が損傷するのを防止すべ
く発明した事による。即ち、遠心力の作用時には、上記
凹部１６内に取り込まれている潤滑油が常に下方に流れ
るとは限らず、上記遠心力と重力との合力に応じた方向
に流れる。そこで、上記給油孔２０、２０を図示の３個
所に設ければ、上記遠心力に拘らず、何れかの給油孔２
０からテーパころ軸受１０に向けて潤滑油が供給され
る。It is to be noted that at least one oil supply hole 20 is required, but when only one oil supply hole 20 is provided, it is provided at the lower end portion of the inner peripheral surface of the flange portion 15. The reason is that most of the lubricating oil taken in the recess 16 is effectively used for lubricating the tapered roller bearing 10. However, the oil supply holes 20, 2
It is preferable that 0s are provided at three positions as shown. The reason for this is that the present invention was originally invented to prevent the tapered roller bearing 10 from being damaged during poor lubrication due to the action of centrifugal force. That is, when centrifugal force is applied, the lubricating oil taken into the recess 16 does not always flow downward, but flows in a direction according to the resultant force of the centrifugal force and gravity. Therefore, if the oil supply holes 20 and 20 are provided at three positions shown in the drawing, any one of the oil supply holes 2 will be irrespective of the centrifugal force.
Lubricating oil is supplied from 0 to the tapered roller bearing 10.
【００２２】次に、図３は本発明の第二実施例を示して
いる。本実施例の場合には、ハウジング２の内周面に形
成した鍔部１５ａの高さ寸法を、上述した第一実施例の
鍔部１５（図１〜２）よりも小さくしている。そして、
この鍔部１５ａの内周面に、外輪１１と一体に形成した
円環状部２２を内嵌固定している。そして、この円環状
部２２と上記鍔部１５ａと外輪１１とにより、保油空間
である凹部１６と捕集通路１９と給油孔２０、２０とを
構成している。その他の構成及び作用は、上述した第一
実施例と同様である。更に、図示は省略したが、上記円
環状部２２に対応する部分を外輪１１とは別体に造り、
この部分と外輪１１とを、それぞれハウジング２の所定
部分に内嵌固定する事もできる。Next, FIG. 3 shows a second embodiment of the present invention. In the case of the present embodiment, the height dimension of the collar portion 15a formed on the inner peripheral surface of the housing 2 is smaller than that of the collar portion 15 (FIGS. 1 and 2) of the first embodiment described above. And
An annular portion 22 formed integrally with the outer ring 11 is fitted and fixed to the inner peripheral surface of the flange portion 15a. The annular portion 22, the collar portion 15a, and the outer ring 11 form a recess 16 that is an oil retaining space, a collection passage 19, and oil supply holes 20 and 20. Other configurations and operations are similar to those of the above-described first embodiment. Further, although not shown, the portion corresponding to the annular portion 22 is formed separately from the outer ring 11,
This portion and the outer ring 11 can be respectively fitted and fixed to predetermined portions of the housing 2.
【００２３】[0023]
【発明の効果】本発明の転がり軸受用潤滑装置は、以上
に述べた通り構成され作用し、特殊条件が重なった場合
でも転がり軸受に対して最低限の潤滑油供給を行なえる
ので、この転がり軸受の損傷防止を有効に図れる。この
結果、使用条件の厳しい転がり軸受を組み込んだ各種機
械装置の信頼性及び耐久性の向上に寄与できる。The lubricating device for a rolling bearing according to the present invention is constructed and operates as described above, and can supply a minimum amount of lubricating oil to the rolling bearing even under special conditions. It is possible to effectively prevent damage to the bearing. As a result, it is possible to contribute to the improvement of the reliability and durability of various mechanical devices incorporating the rolling bearing under severe operating conditions.
【図１】本発明の第一実施例を示す、図４の右部に相当
する縦断面図。FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention and corresponding to the right part of FIG.
【図２】一部を省略して図１の左方から見た図。FIG. 2 is a diagram with a part omitted, as viewed from the left side of FIG.
【図３】本発明の第二実施例を示す、図１と同様の図。FIG. 3 is a view similar to FIG. 1, showing a second embodiment of the present invention.
【図４】従来構造の１例を示す縦断面図。FIG. 4 is a vertical sectional view showing an example of a conventional structure.
１ 回転軸 ２ ハウジング ３ 転がり軸受 ４ 油溜 ５ 潤滑油 ６ ポンプ ７ 吐出孔 ８ 吸入孔 ９ 嵌合段部 １０ テーパころ軸受 １１ 外輪 １２ 内輪 １３ テーパころ １４ 天井面 １５、１５ａ 鍔部 １６ 凹部 １７ 環状突部 １８ 平坦面 １９ 捕集通路 ２０ 給油孔 ２１ 空間 ２２ 円環状部 1 Rotating Shaft 2 Housing 3 Rolling Bearing 4 Oil Reservoir 5 Lubricating Oil 6 Pump 7 Discharge Hole 8 Suction Hole 9 Fitting Step 10 Tapered Roller Bearing 11 Outer Ring 12 Inner Ring 13 Tapered Roller 14 Ceiling Surface 15, 15a Collar 16 Recess 17 Ring Protrusion 18 Flat surface 19 Collection passage 20 Oil supply hole 21 Space 22 Annular portion
Claims (1)
有しこのハウジングに対して相対回転する軸と、上記内
周面と外周面との間に設けられた転がり軸受と、この転
がり軸受に向けて潤滑油を注ぐ潤滑油供給手段とを備え
た転がり軸受用潤滑装置に於いて、上記転がり軸受に隣
接して設けられた保油空間と、上記潤滑油供給手段から
注がれる潤滑油を受け取り可能な位置にその一端を、上
記保油空間にその他端を、それぞれ開口させた捕集通路
と、上記保油空間にその一端を、上記転がり軸受を構成
する転動体設置部分に対向する位置にその他端を、それ
ぞれ開口させた給油孔とを備えた事を特徴とする転がり
軸受用潤滑装置。1. A housing having an inner peripheral surface, a shaft having an outer peripheral surface and rotating relative to the housing, a rolling bearing provided between the inner peripheral surface and the outer peripheral surface, and the rolling bearing. In a lubrication device for rolling bearings, which is provided with a lubricating oil supply means for pouring lubricating oil toward a roller bearing, an oil retaining space provided adjacent to the rolling bearing, and a lubricating oil poured from the lubricating oil supply means. At the position where the oil can be received, the other end in the oil retaining space, and the collection passage having the other end opened, and the one end in the oil retaining space faces the rolling element installation portion that constitutes the rolling bearing. A lubrication device for rolling bearings, characterized in that the other end is provided at a position and an oil supply hole opened respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18287895A JPH0932859A (en) | 1995-07-19 | 1995-07-19 | Lubricating device for rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18287895A JPH0932859A (en) | 1995-07-19 | 1995-07-19 | Lubricating device for rolling bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0932859A true JPH0932859A (en) | 1997-02-04 |
Family
ID=16126004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18287895A Pending JPH0932859A (en) | 1995-07-19 | 1995-07-19 | Lubricating device for rolling bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0932859A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6464398B2 (en) | 2000-05-22 | 2002-10-15 | Nsk Ltd. | Roller bearing |
| US20140369635A1 (en) * | 2013-06-17 | 2014-12-18 | Jtekt Corporation | Tapered roller bearing and power transmission device using tapered roller bearing |
-
1995
- 1995-07-19 JP JP18287895A patent/JPH0932859A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6464398B2 (en) | 2000-05-22 | 2002-10-15 | Nsk Ltd. | Roller bearing |
| US20140369635A1 (en) * | 2013-06-17 | 2014-12-18 | Jtekt Corporation | Tapered roller bearing and power transmission device using tapered roller bearing |
| US9243667B2 (en) * | 2013-06-17 | 2016-01-26 | Jtekt Corporation | Tapered roller bearing and power transmission device using tapered roller bearing |
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