JPH0647696U - Sealed double row rolling bearing - Google Patents
Sealed double row rolling bearingInfo
- Publication number
- JPH0647696U JPH0647696U JP089914U JP8991492U JPH0647696U JP H0647696 U JPH0647696 U JP H0647696U JP 089914 U JP089914 U JP 089914U JP 8991492 U JP8991492 U JP 8991492U JP H0647696 U JPH0647696 U JP H0647696U
- Authority
- JP
- Japan
- Prior art keywords
- flange
- rolling bearing
- row rolling
- cage
- sealed double
- 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
- 238000005096 rolling process Methods 0.000 title claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 239000004519 grease Substances 0.000 abstract description 17
- 230000000694 effects Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
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
- F16C33/38—Ball cages
- F16C33/3806—Details of interaction of cage and race, e.g. retention, centring
-
- 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
- F16C33/7853—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 one or more sealing lips to contact the inner race
-
- 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
- F16C19/08—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 two or more rows of balls
-
- 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
- F16C2360/00—Engines or pumps
- F16C2360/44—Centrifugal pumps
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
(57)【要約】
【目的】 軸受内部の圧力の変動を緩和し且つグリ−ス
漏れを防止して軸受寿命を延長することの出来る密封形
複列転がり軸受を提供すること。
【構成】 外輪軌道面１ａと軸２表面に設けた軌道面２
ａとの間に冠型保持器４で保持される玉３を配置すると
共にこれら玉３の外側に密封板５を配置してなる密封形
複列転がり軸受であって、保持器４の前記密封板に対向
する側に鍔部４ｆを形成すると共に該鍔部４ｆの円周方
向にスリットを形成し、更に前記軸２表面の前記鍔部４
ｆに対向する位置に溝２ｃを周設し、ラビリンス７を形
成し、更に前記保持器４の反鍔部側の端部内径側に面取
部４ｃを周設したことを特徴とする密封形複列転がり軸
受。
(57) [Abstract] [Purpose] To provide a sealed double row rolling bearing capable of relieving pressure fluctuation inside the bearing and preventing grease leakage to extend the life of the bearing. [Structure] Outer ring raceway surface 1a and raceway surface 2 provided on the surface of shaft 2
a sealed double row rolling bearing in which balls 3 held by a crown type cage 4 are arranged between a and a, and a sealing plate 5 is arranged on the outside of these balls 3; A flange 4f is formed on the side facing the plate, and a slit is formed in the circumferential direction of the flange 4f. Further, the flange 4 on the surface of the shaft 2 is formed.
A sealed type in which a groove 2c is circumferentially provided at a position facing f, a labyrinth 7 is formed, and a chamfered portion 4c is circumferentially provided on the inner diameter side of the end of the cage 4 on the side opposite to the flange. Double row rolling bearing.
Description
【０００１】[0001]
この考案は、自動車等のエンジン冷却用のウオ−タ−ポンプで用いられる密封 形複列転がり軸受、より詳しくは回転中軸受内部の圧力変化に伴って生じるグリ −ス漏れを防止することの出来る密封形複列転がり軸受に関する。 The present invention can prevent grease leakage caused by a pressure change in a sealed double row rolling bearing used in a water pump for cooling an engine of an automobile or the like, more specifically, a bearing during rotation. The present invention relates to a sealed double row rolling bearing.
【０００２】[0002]
エンジン冷却用ウオ−タ−ポンプでは駆動軸の一方で冷却用ファンを駆動し、 他方で冷却水循環用のインペラを駆動する。このような駆動軸を支持する軸受装 置は、通常図４に示すように軌道面１ａ及び１ｂを設けた外輪１と、表面に軌道 面２ａ及び２ｂを形成した駆動軸２と、これら軌道面間に玉３、３を保持する保 持器４' 、４' 配置した所謂複列転がり軸受が用いられる。この場合ファン側寄 りの軸受としては該ファンをベルト駆動するためのプ−リ（図示せず）が配置さ れ比較的ラジアル荷重も大きいことから転動体として『ころ』を用いることもあ るが、近年は両側とも『ころ』或いは図に示すような玉３、３が配置されること も多い。 In the engine cooling water pump, one of the drive shafts drives a cooling fan and the other drives an impeller for circulating cooling water. A bearing device for supporting such a drive shaft is generally an outer ring 1 provided with raceway surfaces 1a and 1b as shown in FIG. 4, a drive shaft 2 having raceway surfaces 2a and 2b formed on the surface thereof, and these raceway surfaces. A so-called double-row rolling bearing in which retainers 4 ', 4'for holding the balls 3, 3 are arranged is used. In this case, as a bearing near the fan, a pulley (not shown) for driving the fan by a belt is arranged, and a radial load is relatively large. Therefore, "roller" may be used as a rolling element. However, in recent years, “rollers” or balls 3, 3 as shown in the figure are often arranged on both sides.
【０００３】 前記する構成の複列転がり軸受では両端部に密封板５及び６が配置されるが、 このような密封板５及び６等はＲＳタイプのものが用いられることが多い。その 他上記する密封形複列転がり軸受としては、特公昭３７−１３８０７号、実開昭 ５０−１１７２４９号、実開昭６１−１３３１２４号、実開昭６２−５０３２０ 号で開示されたものが知られている。In the double-row rolling bearing having the above-described structure, the sealing plates 5 and 6 are arranged at both ends, but such sealing plates 5 and 6 are often RS type. Other known sealed double row rolling bearings are disclosed in Japanese Examined Patent Publication No. 37-13807, No. 50-117249, No. 61-133124, No. 62-50320. Has been.
【０００４】[0004]
密封形複列転がり軸受では玉軸受を使用する場合、保持器として冠型保持器が 用いられ潤滑剤としてグリ−スが充填されることも多い。このような場合密封板 ５のリップ部５ａ周辺にグリ−スＧが存在すると軸受内部での圧力の変化に伴う 呼吸作用によりグリ−ス漏れを生じることがある。グリ−ス漏れが生じると焼付 による軸受寿命の低下等関連機構のトラブルへと発展する。 When a ball bearing is used in a sealed double row rolling bearing, a crown type cage is often used as a cage and grease is often filled as a lubricant. In such a case, if the grease G is present around the lip portion 5a of the sealing plate 5, there may be a case where the grease leaks due to a breathing action associated with a change in pressure inside the bearing. When grease leaks, it causes troubles of the related mechanism such as reduction of bearing life due to seizure.
【０００５】 この考案はかかる課題に鑑みてなされたものであり、その目的とする所は軸受 内部の圧力の変動を緩和し且つグリ−ス漏れを防止して軸受寿命を延長すること の出来る密封形複列転がり軸受を提供することにある。The present invention has been made in view of the above problems, and an object thereof is to seal a seal that can reduce fluctuations in pressure inside the bearing and prevent grease leakage to extend the life of the bearing. The purpose is to provide a double row rolling bearing.
【０００６】[0006]
即ち、この考案は上記する課題を解決するために、外輪の内周面に軸方向に 間隔を設けて形成した複数の軌道面と該外輪側軌道面に対向する位置の軸表面に 設けた軌道面との間に保持器で保持される転動体を配置すると共にこれら転動体 の両外側に密封板を配置してなる密封形複列転がり軸受において、前記少なくと も一方の保持器と転動体を冠型保持器と玉とし且つ該保持器の前記密封板に対向 する側に鍔部を形成すると共に該鍔部の円周方向にスリットを形成し、更に前記 軸表面の前記鍔部に対向する位置に溝を周設し、これら鍔部と溝とでラビリンス を形成したことを特徴とする。 That is, in order to solve the above-mentioned problems, the present invention provides a plurality of raceway surfaces formed on the inner peripheral surface of the outer ring at intervals in the axial direction and a raceway provided on the shaft surface at a position facing the outer ring side raceway surface. In a sealed double-row rolling bearing in which rolling elements to be held by cages are arranged between the rolling elements and sealing plates, and sealing plates are arranged on both outer sides of these rolling elements, at least one of the cage and rolling elements is Is a crown-type cage and a ball, and a collar portion is formed on the side of the cage facing the sealing plate, and a slit is formed in the circumferential direction of the collar portion, and further faces the collar portion on the shaft surface. It is characterized in that a groove is circumferentially provided at a position to be formed, and a labyrinth is formed by the flange portion and the groove.
【０００７】 更に、この考案は上記する課題を解決するために、保持器の反鍔部側の端部 内径側に面取部を周設したことを特徴とする。Further, in order to solve the above problems, the present invention is characterized in that a chamfered portion is circumferentially provided on the inner diameter side of the end on the side opposite to the flange of the cage.
【０００８】[0008]
密封形複列転がり軸受を上記手段とした時の作用について添付図（図１乃至図 ４）の符号を用いて説明する。 の手段によれば、鍔部４ｆと溝２ｂとで形成されるラビリンス７により密封 性能が向上し、グリ−スの密封板５方向への移動が防止されグリ−ス漏れを防止 することが出来る。また保持器の鍔部４ｆに形成したスリット４ｓにより保持器 ４を組込む際鍔部４ｆが弾性変形するので保持器組込性が良くなるだけでなく、 回転時該スリット４ｓ自身もラビリンス効果を果たす。 更に、の手段により保持器４の正面内径側に形成した面取部４ｃは、回転時 の軸２の遠心力によりグリ−スをより内部空間９方向へ引っ張るよう作用するの でグリ−ス漏れの危険はより少なくなる。 The operation when the sealed double row rolling bearing is used as the above means will be described with reference to the reference numerals in the accompanying drawings (FIGS. 1 to 4). According to the above means, the labyrinth 7 formed by the collar portion 4f and the groove 2b improves the sealing performance, and the movement of the grease in the direction of the sealing plate 5 is prevented, and the grease leakage can be prevented. . Further, the slit 4s formed in the collar portion 4f of the cage elastically deforms the collar portion 4f when the cage 4 is assembled, so that not only the cage assembling property is improved, but also the slit 4s itself exerts a labyrinth effect during rotation. . Further, the chamfered portion 4c formed on the front inner diameter side of the cage 4 by means of means acts to pull the grease further toward the internal space 9 by the centrifugal force of the shaft 2 during rotation, so that the grease leaks. The risk of is less.
【０００９】[0009]
以下、この考案の具体的実施例について図面を参照して説明する。 図１はこの考案の密封形複列転がり軸受の一部断面図、図２はこの考案の密封 形複列転がり軸受で用いられる保持器の平面図、図３は図２のＡ−Ａ矢視断面図 である。尚、説明の都合上同一構成要素には従来技術で使用した図４と図５の符 号と同一の符号を用いて説明する。 外輪１の一方（ファンを回転駆動するプ−リ側）に形成された軌道面１ａと軸 ２の表面に形成された軌道面２ａとの間にはスラスト荷重も受けられるよう玉３ が配置され保持器４によって保持される。該保持器４は密封形軸受に適した冠型 保持器が使用され、玉３は球状に形成されたポケット４ｐに配置される。また、 前記外輪１端部と軸２端部との間には密封板５が前記保持器４の背面と対向する ように配置される Hereinafter, a specific embodiment of the present invention will be described with reference to the drawings. 1 is a partial cross-sectional view of the sealed double-row rolling bearing of the present invention, FIG. 2 is a plan view of a cage used in the sealed double-row rolling bearing of the present invention, and FIG. 3 is a view taken along the line AA of FIG. It is a sectional view. For convenience of explanation, the same components will be described using the same reference numerals as those in FIGS. 4 and 5 used in the prior art. A ball 3 is arranged between a raceway surface 1a formed on one side of the outer ring 1 (on the pulley side for rotationally driving the fan) and a raceway surface 2a formed on the surface of the shaft 2 so as to receive a thrust load. It is held by the holder 4. The cage 4 is a crown type cage suitable for a sealed bearing, and the balls 3 are arranged in a spherical pocket 4p. A sealing plate 5 is arranged between the end of the outer ring 1 and the end of the shaft 2 so as to face the back surface of the cage 4.
【００１０】 次に、前記保持器４の内径側には鍔部４ｆが形成され、そして該鍔部４ｆと対 向する軸２側の位置には溝２ｂが周設される。即ち、保持器４の鍔部４ｆと軸２ の溝２ｂとでラビリンス７が形成される。 更に前記保持器４の鍔部４ｆには円周方向一定間隔にスリット４ｓ、４ｓが複 数箇所形成してある。Next, a flange portion 4f is formed on the inner diameter side of the retainer 4, and a groove 2b is provided at a position on the shaft 2 side facing the flange portion 4f. That is, the labyrinth 7 is formed by the flange portion 4f of the cage 4 and the groove 2b of the shaft 2. Further, a plurality of slits 4s and 4s are formed in the flange portion 4f of the cage 4 at regular intervals in the circumferential direction.
【００１１】 また前記保持器４の正面側内径部には面取部４ｃを周設する。即ち、保持器４ と軸２との開いたの空間８や内部９等にはグリ−スが充填されるが、これらグリ −スが回転時該面取部４ｃにより内部９側へ誘導されるようにしてある。Further, a chamfered portion 4c is provided around the inner diameter portion on the front side of the cage 4. That is, the open space 8 between the cage 4 and the shaft 2, the inside 9 and the like are filled with grease, which is guided to the inside 9 side by the chamfered portion 4c during rotation. Is done.
【００１２】 この考案の密封形複列転がり軸受の構成は以上のようであり、保持器４の内径 部に形成した鍔部４ｆと軸２に周設した溝２ｂとで形成されるラビリンス７によ り密封性能が向上し、グリ−スの密封板５方向への移動が防止されグリ−ス漏れ を防止することが出来る。 また保持器の鍔部４ｆに形成したスリット４ｓにより保持器４を組込む際鍔部 ４ｆが弾性変形するので保持器組込性が良くなるだけでなく、回転時該スリット ４ｓ自身もラビリンス効果を果たす。更に保持器４の正面内径側に形成した面取 部４ｃは、回転時の駆動軸２の遠心力によりグリ−スをより内部空間９方向へ引 っ張るよう作用するのでグリ−ス漏れの危険は少なくなる。The structure of the sealed double-row rolling bearing of the present invention is as described above, and the labyrinth 7 formed by the flange portion 4f formed on the inner diameter portion of the cage 4 and the groove 2b provided around the shaft 2 is provided. As a result, the sealing performance is improved, movement of the grease toward the sealing plate 5 is prevented, and grease leakage can be prevented. Further, when the cage 4 is assembled by the slits 4s formed in the collar portion 4f of the cage, the collar portion 4f is elastically deformed, so that not only the cage assembling property is improved, but also the slit 4s itself exhibits a labyrinth effect during rotation. . Further, the chamfered portion 4c formed on the inner diameter side of the front surface of the cage 4 acts to pull the grease toward the inner space 9 by the centrifugal force of the drive shaft 2 during rotation, so that there is a risk of grease leakage. Will be less.
【００１３】[0013]
この考案の密封形複列転がり軸受は以上詳述したような構成としたので、軸受 内の圧力を自動調整することが出来且つ密封性能が良くなる。従ってグリ−ス漏 れも防止することが出来軸受寿命を延長することが出来る。 Since the sealed double-row rolling bearing of the present invention is configured as described in detail above, the pressure inside the bearing can be automatically adjusted and the sealing performance is improved. Therefore, grease leakage can be prevented and the bearing life can be extended.
【図１】この考案の密封形複列転がり軸受の一部断面図
である。FIG. 1 is a partial sectional view of a hermetically sealed double row rolling bearing according to the present invention.
【図２】この考案の密封形複列転がり軸受で用いられる
保持器の平面図である。FIG. 2 is a plan view of a cage used in the sealed double-row rolling bearing of the present invention.
【図３】図２のＡ−Ａ矢視断面図である。FIG. 3 is a sectional view taken along the line AA of FIG.
【図４】従来のウオ−タ−ポンプの密封形複列転がり軸
受の断面図である。FIG. 4 is a sectional view of a sealed double-row rolling bearing of a conventional water pump.
【図５】図４のＰ部拡大図である。FIG. 5 is an enlarged view of a P portion of FIG.
１ 外輪 １ａ、１ｂ 軌道面 ２ 軸 ２ａ 軌道面 ２ｃ
溝 ３ 玉 ４ 冠型保持器 ４ｆ 保持器鍔部 ４ｓ
スリット ４ｃ 面取部 ５ 密封板 ７ ラビリンス1 Outer ring 1a, 1b Raceway surface 2 Axis 2a Raceway surface 2c
Groove 3 Ball 4 Crown type retainer 4f Cage collar 4s
Slit 4c Chamfer 5 Sealing plate 7 Labyrinth
Claims (2)
成した複数の軌道面と該外輪側軌道面に対向する位置の
軸表面に設けた軌道面との間に保持器で保持される転動
体を配置すると共にこれら転動体の両外側に密封板を配
置してなる密封形複列転がり軸受において、前記少なく
とも一方の保持器と転動体を冠型保持器と玉とし、且つ
該保持器の前記密封板に対向する側に鍔部を形成すると
共に該鍔部の円周方向にスリットを形成し、更に前記軸
表面の前記鍔部に対向する位置に溝を周設し、これら鍔
部と溝とでラビリンスを形成したことを特徴とする密封
形複列転がり軸受。1. A retainer is held between a plurality of raceway surfaces formed on the inner circumferential surface of the outer ring at intervals in the axial direction and a raceway surface provided on the shaft surface at a position facing the outer ring side raceway surface. In a sealed double-row rolling bearing in which rolling elements are disposed and sealing plates are disposed on both outer sides of these rolling elements, the at least one cage and rolling element are crown type cages and balls, and A flange is formed on the side of the retainer facing the sealing plate and a slit is formed in the circumferential direction of the flange, and a groove is provided around the shaft surface at a position facing the flange. A sealed double-row rolling bearing characterized in that a labyrinth is formed by the flange portion and the groove.
を周設したことを特徴とする請求項第１項記載の密封形
複列転がり軸受。2. The hermetically sealed double row rolling bearing according to claim 1, wherein a chamfered portion is provided around the inner diameter side of the end of the cage on the side opposite to the flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP089914U JPH0647696U (en) | 1992-12-04 | 1992-12-04 | Sealed double row rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP089914U JPH0647696U (en) | 1992-12-04 | 1992-12-04 | Sealed double row rolling bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0647696U true JPH0647696U (en) | 1994-06-28 |
Family
ID=13983984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP089914U Pending JPH0647696U (en) | 1992-12-04 | 1992-12-04 | Sealed double row rolling bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0647696U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10012266B1 (en) * | 2017-01-12 | 2018-07-03 | Schaeffler Technologies AG & Co. KG | Ball bearing with cage having rattle reduction feature and method thereof |
-
1992
- 1992-12-04 JP JP089914U patent/JPH0647696U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10012266B1 (en) * | 2017-01-12 | 2018-07-03 | Schaeffler Technologies AG & Co. KG | Ball bearing with cage having rattle reduction feature and method thereof |
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