JP2003287040A - Rolling bearing with sealing seal - Google Patents
Rolling bearing with sealing sealInfo
- Publication number
- JP2003287040A JP2003287040A JP2002091933A JP2002091933A JP2003287040A JP 2003287040 A JP2003287040 A JP 2003287040A JP 2002091933 A JP2002091933 A JP 2002091933A JP 2002091933 A JP2002091933 A JP 2002091933A JP 2003287040 A JP2003287040 A JP 2003287040A
- Authority
- JP
- Japan
- Prior art keywords
- hermetic seal
- inner ring
- peripheral surface
- bearing
- rolling 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
- 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
- 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
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
- F16C33/7823—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of sealing lips
-
- 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
-
- 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
- F16C2231/00—Running-in; Initial operation
-
- 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
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、密封シール付の転
がり軸受に関し、例えばエアコン用ファンモータ、クリ
ーナモータ、電動ファンモータ等の回転支承部に好適に
用いられる密封シール付転がり軸受に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling bearing with a hermetically sealed seal, and more particularly to a rolling bearing with a hermetically sealed seal which is preferably used for a rotary bearing of an air conditioner fan motor, a cleaner motor, an electric fan motor or the like.
【0002】[0002]
【従来の技術】従来のこの種の密封シール付転がり軸受
としては、例えば図8に示すものが知られている。この
密封シール付転がり軸受は、内輪1の軌道溝1aと外輪
2の軌道溝2aとの間に転動体としての多数の玉3が保
持器4を介して周方向に転動可能に介装されており、ま
た、軸方向の両端部には内輪1と外輪2との間を密閉す
る環状板状の密封シール5が配設されている。この密封
シール5により、軸受内に付与されたグリースや潤滑油
等の潤滑剤が外部に漏れることを防止するとともに、軸
受内にゴミや埃等が侵入するのを防止している。2. Description of the Related Art As a conventional rolling bearing with a hermetically sealed seal of this type, for example, one shown in FIG. 8 is known. In this rolling bearing with a hermetic seal, a large number of balls 3 as rolling elements are interposed between a raceway groove 1a of an inner ring 1 and a raceway groove 2a of an outer ring 2 so as to be rollable in a circumferential direction via a cage 4. Further, annular plate-like hermetic seals 5 for hermetically sealing the space between the inner ring 1 and the outer ring 2 are provided at both ends in the axial direction. This hermetic seal 5 prevents lubricants such as grease and lubricating oil applied in the bearing from leaking to the outside, and also prevents dust and dirt from entering the bearing.
【0003】密封シール5は、例えば芯金6にゴム等の
シール材7が加硫成形等により接着されたもので、その
外周部が外輪2の内径面の軸方向に両端部に形成された
嵌合溝8に嵌合固定されている。また、シール材7の内
周縁にはリップ部7aが設けられており、図8ではこの
リップ部7aは内輪1の外径面の軸方向の両端部に形成
された周溝9aの軸方向外方の側面に弾性的に当接して
いる。なお、小型の転がり軸受においては、このような
周溝9aを備えていないものもある。The hermetic seal 5 is, for example, a core metal 6 to which a sealing material 7 such as rubber is adhered by vulcanization molding, and the outer peripheral portion is formed at both ends in the axial direction of the inner diameter surface of the outer ring 2. It is fitted and fixed in the fitting groove 8. Further, a lip portion 7a is provided on the inner peripheral edge of the sealing material 7, and in FIG. 8, the lip portion 7a is located outside the circumferential groove 9a formed at both axial end portions of the outer diameter surface of the inner ring 1. It is elastically abutted on one side. Some small rolling bearings do not have such a circumferential groove 9a.
【0004】また、図9に示した密封シール付転がり軸
受は、内輪1の外径面の軸方向の両端部に周溝ではなく
段部9bが設けられたタイプのもので、密封シール5の
リップ部7aが該段部9bの側面に弾性的に当接してい
る。Further, the rolling bearing with a hermetic seal shown in FIG. 9 is of a type in which a step portion 9b is provided at both ends of the outer diameter surface of the inner ring 1 in the axial direction, instead of a circumferential groove. The lip portion 7a elastically contacts the side surface of the step portion 9b.
【0005】[0005]
【発明が解決しようとする課題】しかしながら、図8お
よび図9に示した従来の密封シール付転がり軸受におい
ては、軸受回転等により密封シール5のリップ部7aが
内輪1に弾性的に摺接する際に、内輪1がリップ部7a
から受ける摩擦トルクが存在し、この摩擦トルクが軸受
トルクの大部分を占めていることが多い。一方、図10
に示すように、密封シール5のリップ部7aが内輪1に
接触しない非接触型(ラビリンスシール型)の密封シー
ル付転がり軸受では、前記摩擦トルクは存在せず低トル
ク化が図れるものの、本質的にラビリンス部に隙間が存
在していることから外部からの異物の侵入に対する密閉
性に問題を残すことになる。However, in the conventional rolling bearing with a hermetic seal shown in FIGS. 8 and 9, when the lip portion 7a of the hermetic seal 5 elastically comes into sliding contact with the inner ring 1 due to bearing rotation or the like. The inner ring 1 has a lip portion 7a
There is a friction torque received from the bearing, and this friction torque occupies most of the bearing torque in many cases. On the other hand, FIG.
As shown in FIG. 5, in the non-contact type (labyrinth seal type) rolling bearing with a hermetic seal in which the lip portion 7a of the hermetic seal 5 does not come into contact with the inner ring 1, the friction torque does not exist and the torque can be reduced. Since there is a gap in the labyrinth part, there remains a problem in the hermeticity against the intrusion of foreign matter from the outside.
【0006】本発明はこのような技術的背景に鑑みてな
されたものであり、密封シールのリップ部の密着性を維
持して長期に渡り良好な密閉性を確保することができる
と共に、軸受トルクの低トルク化を図ることができる密
封シール付転がり軸受を提供することを目的とする。The present invention has been made in view of the above technical background, and it is possible to maintain the close contact of the lip portion of the hermetic seal to ensure a good hermeticity for a long period of time, and to obtain the bearing torque. An object of the present invention is to provide a rolling bearing with a hermetically sealed seal that can reduce the torque.
【0007】[0007]
【課題を解決するための手段】上記目的を達成するため
に、請求項1に係る発明は、外輪と内輪との間に多数の
転動体が周方向に転動可能に配設されると共に、軸方向
の両端部に前記外輪と前記内輪との間を密閉する密封シ
ールが設けられた密封シール付転がり軸受において、前
記密封シールに設けられて前記外輪の端部内周面および
前記内輪の端部外周面の内の一方の周面に弾性的に当接
するリップ部を使用前又は使用初期に軸受の回転により
該周面に摺接させて摩耗させることにより、前記リップ
部と前記周面との隙間および該周面に対する前記密封シ
ールの締め代を略零としたことを特徴とする。In order to achieve the above object, in the invention according to claim 1, a large number of rolling elements are arranged between an outer ring and an inner ring so as to be rollable in the circumferential direction, and In a rolling bearing with a hermetic seal having hermetic seals for sealing between the outer ring and the inner ring provided at both ends in the axial direction, an end inner peripheral surface of the outer ring and an end of the inner ring provided in the hermetic seal. The lip portion elastically abutting on one of the outer peripheral surfaces is abraded by sliding the friction portion on the peripheral surface before or during the initial stage of use by rotating the bearing, whereby the lip portion and the peripheral surface The tightening margin of the hermetic seal with respect to the gap and the peripheral surface is substantially zero.
【0008】請求項2に係る発明は、請求項1におい
て、前記リップ部の前記周面に弾性的に当接する部分を
他の部分より薄く形成したことを特徴とする。請求項3
に係る発明は、請求項1又は2において、前記リップ部
の前記周面に弾性的に当接する部分を該周面に線接触さ
せたことを特徴とする。According to a second aspect of the present invention, in the first aspect, a portion of the lip portion elastically abutting the peripheral surface is formed thinner than other portions. Claim 3
The invention according to claim 1 is characterized in that, in claim 1 or 2, a portion of the lip portion elastically abutting the peripheral surface is brought into line contact with the peripheral surface.
【0009】[0009]
【発明の実施の形態】以下、本発明の実施の形態を図を
参照して説明する。図1は本発明の第1の実施の形態で
ある密封シール付転がり軸受を説明するための要部断面
図、図2〜図7は本発明の他の実施の形態である密封シ
ール付転がり軸受を説明するための要部断面図である。
なお、図8および図9で説明した従来の密封シール付転
がり軸受と重複する部分については、各図に同一符号を
付して説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a main part for explaining a rolling bearing with a hermetic seal according to a first embodiment of the present invention, and FIGS. 2 to 7 are rolling bearings with a hermetic seal according to another embodiment of the present invention. FIG. 6 is a cross-sectional view of a main part for explaining.
In addition, the portions that overlap with the conventional rolling bearing with a hermetic seal described in FIGS. 8 and 9 will be described with the same reference numerals in each drawing.
【0010】図1に示すように、この密封シール付転が
り軸受10は、内輪1の軌道溝1aと外輪2の軌道溝2
aとの間に転動体としての多数の玉3が保持器4を介し
て周方向に転動可能に介装されており、また、軸方向の
両端部には内輪1と外輪2との間を密閉する環状板状の
密封シール20が配設されている。この密封シール20
により、軸受内に付与されたグリースや潤滑油等の潤滑
剤が外部に漏れることを防止するとともに、軸受内にゴ
ミや埃等が侵入するのを防止している。As shown in FIG. 1, the rolling bearing 10 with a hermetic seal has a raceway groove 1a of the inner ring 1 and a raceway groove 2 of the outer ring 2.
A large number of balls 3 as rolling elements are provided between the inner ring 1 and the outer ring 2a between the inner ring 1 and the outer ring 2 at both ends in the axial direction. An annular plate-shaped hermetic seal 20 for enclosing the above is provided. This hermetic seal 20
This prevents the lubricant such as grease and lubricating oil applied to the bearing from leaking to the outside, and also prevents dust and dirt from entering the bearing.
【0011】密封シール20は、芯金21にゴム等のシ
ール材22が加硫成形等により接着されたもので、その
外周部が外輪2の内径面の軸方向に両端部に形成された
嵌合溝8に嵌合固定されている。また、シール材22の
内周縁にはリップ部22aが設けられており、このリッ
プ部22aは内輪1の外径面の軸方向の両端部に形成さ
れた周溝9aの軸方向外方の側面に当接している。The hermetic seal 20 comprises a core metal 21 and a sealing material 22 made of rubber or the like bonded to the core metal 21 by vulcanization molding or the like. The outer peripheral portion of the hermetic seal 20 is formed at both ends in the axial direction of the inner diameter surface of the outer ring 2. The fitting groove 8 is fitted and fixed. Further, a lip portion 22a is provided on the inner peripheral edge of the sealing material 22, and the lip portion 22a is a side surface on the outer side in the axial direction of the circumferential groove 9a formed at both axial end portions of the outer diameter surface of the inner ring 1. Is in contact with.
【0012】ここで、この実施の形態では、前記リップ
部22aの前記周溝9aの軸方向外方の側面に当接する
部分を鋭角状に形成して該リップ部22aを前記周溝9
aの側面に対して周方向に弾性的に線接触させ、この状
態で、軸受の使用前又は使用初期に内輪1を回転させて
リップ部22aを周溝9aの側面に摺接させて摩耗させ
ることにより、該リップ部22aを前記周溝9aの側面
に比較的短時間で馴染ませてリップ部22aと周溝9a
の側面との隙間および該側面に対する前記密封シール2
0の締め代を略零としている。Here, in this embodiment, a portion of the lip portion 22a which is in contact with the outer side surface of the circumferential groove 9a in the axial direction is formed into an acute angle to form the lip portion 22a in the circumferential groove 9a.
Elastically line contact with the side surface of a in the circumferential direction, and in this state, the inner ring 1 is rotated before the bearing is used or at the initial stage of use so that the lip portion 22a is slidably contacted with the side surface of the circumferential groove 9a to be worn. As a result, the lip portion 22a is fitted to the side surface of the circumferential groove 9a in a relatively short time, and the lip portion 22a and the circumferential groove 9a are fitted.
Between the side surface of the seal and the hermetic seal 2 for the side surface
The zero margin is almost zero.
【0013】これにより、密封シール20のリップ部2
2aの密着性を維持しつつ該リップ部22aの接触力が
極めて小さくなって内輪1の摩擦トルクを小さくするこ
とができ、この結果、長期に渡り良好な密閉性を確保す
ることができると共に、軸受トルクの低トルク化を図る
ことができる。また、リップ部22aのすれ音も発生し
なくなるため、音響性能に優れたものとすることができ
る。As a result, the lip portion 2 of the hermetic seal 20 is formed.
The contact force of the lip portion 22a becomes extremely small while maintaining the adhesiveness of the 2a, and the friction torque of the inner ring 1 can be reduced. As a result, good sealing property can be ensured for a long period of time. It is possible to reduce the bearing torque. Further, since the rubbing sound of the lip portion 22a is not generated, the acoustic performance can be improved.
【0014】なお、内輪1を回転させて密封シール20
のリップ部22aを内輪1の周溝9aの側面に摺接させ
て摩耗させる時期は、軸受の使用前では軸受の製造段階
で行ってもよいし、軸受の使用初期では使用するモータ
に組付けてユーザにて軸受を回転させるようにしてもよ
いが、特に限定されるものではなく、実質的な軸受の使
用段階で密封シール20のリップ部22aと内輪1側と
の隙間および締め代が略零となっていればよい。It should be noted that the inner ring 1 is rotated to make the hermetic seal 20.
The wear of the lip portion 22a of the inner ring 1 by sliding contact with the side surface of the circumferential groove 9a of the inner ring 1 may be performed before the bearing is used, or at the stage of manufacturing the bearing. The bearing may be rotated by the user, but the invention is not particularly limited, and the clearance between the lip portion 22a of the hermetic seal 20 and the inner ring 1 side and the tightening margin are substantially limited at the practical use stage of the bearing. It should be zero.
【0015】また、密封シール20のリップ部22a
(シール材22)の材料は、ゴム、プラスチック、セル
ロース等のように摩耗により発生する粉末が軸受内部に
浸入することがあっても転走面に損傷を与えにくい素材
を用いるのが好ましい。因みに、ブラシモータではイン
ダクションモータに比べて高速回転し、且つ、ブラシの
摩耗粉が発生する環境下で使用されるので適する。Also, the lip portion 22a of the hermetic seal 20.
As the material of the (seal member 22), it is preferable to use a material such as rubber, plastic, or cellulose that is unlikely to damage the rolling contact surface even if powder generated by abrasion enters the inside of the bearing. Incidentally, the brush motor is suitable because it rotates at a higher speed than the induction motor and is used in an environment where abrasion powder of the brush is generated.
【0016】なお、本発明の転がり軸受の外輪、内輪、
転動体、密封シールおよびリップ部等の構成は上記実施
の形態に限定されるものではなく、本発明の要旨を逸脱
しない範囲において適宜変更可能である。例えば、上記
実施の形態では、密封シール20のリップ部22aを内
輪1の外径面に形成された周溝9aの側面に当接させた
場合を例に採ったが、これに代えて、図2に示すよう
に、該リップ部22aを内輪1の外径面の軸方向の両端
部に形成された段部9bの側面に当接させるようにして
もよい。The outer ring, inner ring, and
The configurations of the rolling elements, the hermetic seal, the lip, and the like are not limited to those in the above-described embodiment, and can be appropriately changed without departing from the scope of the present invention. For example, in the above embodiment, the case where the lip portion 22a of the hermetic seal 20 is brought into contact with the side surface of the circumferential groove 9a formed on the outer diameter surface of the inner ring 1 is taken as an example. As shown in FIG. 2, the lip portion 22a may be brought into contact with the side surface of the step portion 9b formed at both axial end portions of the outer diameter surface of the inner ring 1.
【0017】また、上記実施の形態では、密封シール2
0として、芯金21とシール材22を備えたものを採用
したが、これに限定されず、図3に示すように、芯金を
備えていないプラスチックシールからなる密封シール3
0のリップ部30aを内輪1側に当接させるようにして
もよい。この場合、密封シール30のリップ部30aを
内輪1の外径面の軸方向の両端部に形成された段部9c
の軸方向面に当接させている。Further, in the above embodiment, the hermetic seal 2 is used.
As 0, the one provided with the core metal 21 and the sealing material 22 is adopted, but the present invention is not limited to this, and as shown in FIG. 3, the hermetic seal 3 made of a plastic seal without the core metal 3
The 0 lip portion 30a may be brought into contact with the inner ring 1 side. In this case, the lip portion 30a of the hermetic seal 30 is formed with the step portion 9c formed at both axial end portions of the outer diameter surface of the inner ring 1.
Is in contact with the axial surface of.
【0018】更に、密封シール20のリップ部22aを
早期に摩耗させて馴染ませるためには、図4に示すよう
に、該リップ部22aの先端を鋭角(θ<90°)な形
状として内輪1側に線接触させるようにするのが好まし
いが、これに限定されず、例えば図5〜図7に示すよう
に、リップ部22aの先端を極薄い形状として内輪1側
に面接触させるようにしてもよい。Further, in order to quickly wear and adapt the lip portion 22a of the hermetic seal 20, as shown in FIG. 4, the tip of the lip portion 22a is formed into an acute angle (θ <90 °) to form the inner ring 1. It is preferable to make line contact with the side, but not limited to this, and as shown in, for example, FIGS. 5 to 7, the tip of the lip portion 22a is made into an extremely thin shape so as to make surface contact with the inner ring 1 side. Good.
【0019】更に、上記実施の形態では、密封シール2
0の外周部を外輪2側に嵌合すると共に内周側に設けら
れたリップ部22aを内輪1(回転輪)側に摺接させる
場合を例に採ったが、これに限定されず、密封シールの
内周部を内輪1側に嵌合すると共に外周側に設けられた
リップ部を外輪1(回転輪)側に摺接させる場合でも本
発明を適用できるのは勿論である。Further, in the above embodiment, the hermetic seal 2 is used.
The case where the outer peripheral part of 0 is fitted to the outer ring 2 side and the lip part 22a provided on the inner peripheral side is slidably contacted to the inner ring 1 (rotating ring) side is taken as an example, but the invention is not limited to this. It goes without saying that the present invention can be applied even when the inner peripheral portion of the seal is fitted to the inner ring 1 side and the lip portion provided on the outer peripheral side is slidably contacted to the outer ring 1 (rotating ring) side.
【0020】更に、上記実施の形態では、転がり軸受と
して単列深溝玉軸受を例に採ったが、これに限定され
ず、複列玉軸受、ころ軸受や他の転がり軸受に本発明を
適用してもよいのはいうまでもない。Further, in the above-mentioned embodiment, the single row deep groove ball bearing is taken as an example of the rolling bearing, but the present invention is not limited to this, and the present invention is applied to a double row ball bearing, a roller bearing and other rolling bearings. It goes without saying that it is okay.
【0021】[0021]
【発明の効果】上記の説明から明らかなように、請求項
1の発明によれば、密封シールのリップ部の密着性を維
持しつつ該リップ部の接触力が極めて小さくなって摩擦
トルクを小さくすることができるので、長期に渡り良好
な密閉性を確保することができると共に、軸受トルクの
低トルク化を図ることができるという効果が得られる。
また、請求項2又は3の発明では、請求項1の発明に加
えて、密封シールのリップ部を早期に摩耗させて馴染ま
せることができるという効果が得られる。As is clear from the above description, according to the invention of claim 1, the contact force of the lip portion of the hermetic seal is kept extremely small and the friction torque is reduced while maintaining the close contact. As a result, it is possible to obtain good sealing performance for a long period of time and to achieve low bearing torque.
Further, in the invention of claim 2 or 3, in addition to the invention of claim 1, there is an effect that the lip portion of the hermetic seal can be quickly worn and made to fit.
【図1】本発明の第1の実施の形態である密封シール付
転がり軸受を説明するための要部断面図である。FIG. 1 is a sectional view of an essential part for explaining a rolling bearing with a hermetic seal according to a first embodiment of the present invention.
【図2】本発明の第2の実施の形態である密封シール付
転がり軸受を説明するための要部断面図である。FIG. 2 is a sectional view of an essential part for explaining a rolling bearing with a hermetic seal according to a second embodiment of the present invention.
【図3】本発明の第3の実施の形態である密封シール付
転がり軸受を説明するための要部断面図である。FIG. 3 is a sectional view of an essential part for explaining a rolling bearing with a hermetic seal according to a third embodiment of the present invention.
【図4】本発明の第4の実施の形態である密封シール付
転がり軸受を説明するための要部断面図である。FIG. 4 is a sectional view of an essential part for explaining a rolling bearing with a hermetic seal according to a fourth embodiment of the present invention.
【図5】本発明の第5の実施の形態である密封シール付
転がり軸受を説明するための要部断面図である。FIG. 5 is a cross-sectional view of essential parts for explaining a rolling bearing with a hermetic seal according to a fifth embodiment of the present invention.
【図6】本発明の第6の実施の形態である密封シール付
転がり軸受を説明するための要部断面図である。FIG. 6 is a sectional view of an essential part for explaining a rolling bearing with a hermetic seal according to a sixth embodiment of the present invention.
【図7】本発明の第7の実施の形態である密封シール付
転がり軸受を説明するための要部断面図である。FIG. 7 is a sectional view of an essential part for explaining a rolling bearing with a hermetic seal according to a seventh embodiment of the present invention.
【図8】従来の密封シール付転がり軸受を説明するため
の要部断面図である。FIG. 8 is a sectional view of relevant parts for explaining a conventional rolling bearing with a hermetic seal.
【図9】従来の密封シール付転がり軸受を説明するため
の要部断面図である。FIG. 9 is a sectional view of an essential part for explaining a conventional rolling bearing with a hermetic seal.
【図10】従来の密封シール付転がり軸受を説明するた
めの要部断面図である。FIG. 10 is a sectional view of relevant parts for explaining a conventional rolling bearing with a hermetic seal.
1…内輪 2…外輪 3…玉(転動体) 10…密封シール付転がり軸受 20…密封シール 22a…リップ部 1 ... Inner ring 2 ... Outer ring 3 ... Ball (rolling element) 10 ... Rolling bearing with hermetic seal 20 ... hermetic seal 22a ... lip portion
Claims (3)
向に転動可能に配設されると共に、軸方向の両端部に前
記外輪と前記内輪との間を密閉する密封シールが設けら
れた密封シール付転がり軸受において、 前記密封シールに設けられて前記外輪の端部内周面およ
び前記内輪の端部外周面の内の一方の周面に弾性的に当
接するリップ部を、使用前又は使用初期に軸受の回転に
より該周面に摺接させて摩耗させることにより、前記リ
ップ部と前記周面との隙間および該周面に対する前記密
封シールの締め代を略零としたことを特徴とする密封シ
ール付転がり軸受。1. A number of rolling elements are arranged between an outer ring and an inner ring so as to be able to roll in the circumferential direction, and a hermetic seal for sealing between the outer ring and the inner ring is provided at both ends in the axial direction. In a rolling bearing with a hermetic seal provided, a lip portion provided on the hermetic seal and elastically abutting on one peripheral surface of the inner peripheral surface of the end portion of the outer ring and the outer peripheral surface of the end portion of the inner ring is used. Before or at the beginning of use, the bearing is rotated so that the bearing comes into sliding contact with the peripheral surface to cause wear, thereby making the clearance between the lip portion and the peripheral surface and the tightening margin of the hermetic seal against the peripheral surface substantially zero. A characteristic rolling bearing with a hermetic seal.
する部分を他の部分より薄く形成したことを特徴とする
請求項1記載の密封シール付転がり軸受。2. The rolling bearing with a hermetic seal according to claim 1, wherein a portion of the lip portion that elastically contacts the peripheral surface is formed thinner than other portions.
する部分を該周面に線接触させたことを特徴とする請求
項1又は2記載の密封シール付転がり軸受。3. The rolling bearing with a hermetic seal according to claim 1, wherein a portion of the lip portion elastically abutting the peripheral surface is in line contact with the peripheral surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002091933A JP2003287040A (en) | 2002-03-28 | 2002-03-28 | Rolling bearing with sealing seal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002091933A JP2003287040A (en) | 2002-03-28 | 2002-03-28 | Rolling bearing with sealing seal |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2003287040A true JP2003287040A (en) | 2003-10-10 |
Family
ID=29236900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002091933A Pending JP2003287040A (en) | 2002-03-28 | 2002-03-28 | Rolling bearing with sealing seal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2003287040A (en) |
Cited By (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009150935A1 (en) * | 2008-06-13 | 2009-12-17 | Ntn株式会社 | Retainer, deep groove ball bearing, and bearing with seal |
JP2010019296A (en) * | 2008-07-09 | 2010-01-28 | Ntn Corp | Bearing with seal |
JP2010261545A (en) * | 2009-05-11 | 2010-11-18 | Ntn Corp | Bearing with seal |
WO2010131619A1 (en) * | 2009-05-14 | 2010-11-18 | Ntn株式会社 | Bearing for transmission |
JP2011106603A (en) * | 2009-11-19 | 2011-06-02 | Ntn Corp | Bearing with seal |
WO2011074468A1 (en) * | 2009-12-18 | 2011-06-23 | Ntn株式会社 | Rolling bearing |
JP2011127702A (en) * | 2009-12-18 | 2011-06-30 | Ntn Corp | Rolling bearing |
JP2011141000A (en) * | 2010-01-08 | 2011-07-21 | Ntn Corp | Rolling bearing |
EP2351940A1 (en) * | 2008-11-06 | 2011-08-03 | NTN Corporation | Bearing with seal |
WO2011155025A1 (en) | 2010-06-08 | 2011-12-15 | Ntn株式会社 | Rubber composition and molded rubber products |
WO2013002115A1 (en) * | 2011-06-27 | 2013-01-03 | Ntn株式会社 | Rolling bearing |
JP2013036493A (en) * | 2011-08-04 | 2013-02-21 | Ntn Corp | Rolling bearing |
JP2013119932A (en) * | 2011-12-08 | 2013-06-17 | Ntn Corp | Rolling bearing |
JP2013148115A (en) * | 2012-01-17 | 2013-08-01 | Ntn Corp | Deep groove ball bearing and bearing device |
JP2014194281A (en) * | 2014-06-11 | 2014-10-09 | Ntn Corp | Rolling bearing |
US9206490B2 (en) | 2011-12-08 | 2015-12-08 | Ntn Corporation | Bearing part, rolling bearing, and methods of manufacturing them |
US9217472B2 (en) | 2008-11-06 | 2015-12-22 | Ntn Corporation | Seal equipped bearing assembly |
WO2016125762A1 (en) * | 2015-02-06 | 2016-08-11 | Ntn株式会社 | Rolling bearing |
US10087989B2 (en) | 2013-06-06 | 2018-10-02 | Ntn Corporation | Bearing component and rolling bearing |
US10094422B2 (en) | 2013-06-06 | 2018-10-09 | Ntn Corporation | Bearing component and rolling bearing |
US10107335B2 (en) | 2013-06-06 | 2018-10-23 | Ntn Corporation | Bearing component and rolling bearing |
US10156259B2 (en) | 2013-06-06 | 2018-12-18 | Ntn Corporation | Bearing component and rolling bearing |
-
2002
- 2002-03-28 JP JP2002091933A patent/JP2003287040A/en active Pending
Cited By (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102066786A (en) * | 2008-06-13 | 2011-05-18 | Ntn株式会社 | Retainer, deep groove ball bearing, and bearing with seal |
US8727631B2 (en) | 2008-06-13 | 2014-05-20 | Ntn Corporation | Retainer, deep groove ball bearing, and bearing with seal |
WO2009150935A1 (en) * | 2008-06-13 | 2009-12-17 | Ntn株式会社 | Retainer, deep groove ball bearing, and bearing with seal |
JP2010019296A (en) * | 2008-07-09 | 2010-01-28 | Ntn Corp | Bearing with seal |
EP2351940A4 (en) * | 2008-11-06 | 2013-01-09 | Ntn Toyo Bearing Co Ltd | Bearing with seal |
EP2351940A1 (en) * | 2008-11-06 | 2011-08-03 | NTN Corporation | Bearing with seal |
US9217472B2 (en) | 2008-11-06 | 2015-12-22 | Ntn Corporation | Seal equipped bearing assembly |
JP2010261545A (en) * | 2009-05-11 | 2010-11-18 | Ntn Corp | Bearing with seal |
JP2011141023A (en) * | 2009-05-14 | 2011-07-21 | Ntn Corp | Bearing for transmission |
EP2431624A1 (en) * | 2009-05-14 | 2012-03-21 | NTN Corporation | Bearing for transmission |
CN102422037A (en) * | 2009-05-14 | 2012-04-18 | Ntn株式会社 | Bearing for transmission |
US8714827B2 (en) | 2009-05-14 | 2014-05-06 | Ntn Corporation | Bearing for transmission |
WO2010131619A1 (en) * | 2009-05-14 | 2010-11-18 | Ntn株式会社 | Bearing for transmission |
EP2431624A4 (en) * | 2009-05-14 | 2013-10-23 | Ntn Toyo Bearing Co Ltd | Bearing for transmission |
JP2011106603A (en) * | 2009-11-19 | 2011-06-02 | Ntn Corp | Bearing with seal |
JP2011127702A (en) * | 2009-12-18 | 2011-06-30 | Ntn Corp | Rolling bearing |
WO2011074468A1 (en) * | 2009-12-18 | 2011-06-23 | Ntn株式会社 | Rolling bearing |
JP2011141000A (en) * | 2010-01-08 | 2011-07-21 | Ntn Corp | Rolling bearing |
WO2011155025A1 (en) | 2010-06-08 | 2011-12-15 | Ntn株式会社 | Rubber composition and molded rubber products |
US9012551B2 (en) | 2010-06-08 | 2015-04-21 | Ntn Corporation | Rubber composition and molded rubber products |
US9115762B2 (en) | 2011-06-27 | 2015-08-25 | Ntn Corporation | Rolling bearing |
WO2013002115A1 (en) * | 2011-06-27 | 2013-01-03 | Ntn株式会社 | Rolling bearing |
JP2013036493A (en) * | 2011-08-04 | 2013-02-21 | Ntn Corp | Rolling bearing |
JP2013119932A (en) * | 2011-12-08 | 2013-06-17 | Ntn Corp | Rolling bearing |
US9206490B2 (en) | 2011-12-08 | 2015-12-08 | Ntn Corporation | Bearing part, rolling bearing, and methods of manufacturing them |
JP2013148115A (en) * | 2012-01-17 | 2013-08-01 | Ntn Corp | Deep groove ball bearing and bearing device |
US10087989B2 (en) | 2013-06-06 | 2018-10-02 | Ntn Corporation | Bearing component and rolling bearing |
US10094422B2 (en) | 2013-06-06 | 2018-10-09 | Ntn Corporation | Bearing component and rolling bearing |
US10107335B2 (en) | 2013-06-06 | 2018-10-23 | Ntn Corporation | Bearing component and rolling bearing |
US10156259B2 (en) | 2013-06-06 | 2018-12-18 | Ntn Corporation | Bearing component and rolling bearing |
JP2014194281A (en) * | 2014-06-11 | 2014-10-09 | Ntn Corp | Rolling bearing |
WO2016125762A1 (en) * | 2015-02-06 | 2016-08-11 | Ntn株式会社 | Rolling bearing |
JP2016145594A (en) * | 2015-02-06 | 2016-08-12 | Ntn株式会社 | Rolling bearing |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2003287040A (en) | Rolling bearing with sealing seal | |
US20100066030A1 (en) | Hermetic sealing device | |
JP5300420B2 (en) | Sealed bearing | |
JP5455334B2 (en) | Sealed bearing | |
JP2007051761A (en) | Sealing structure of rolling bearing | |
WO2015180928A1 (en) | Radial seal with contacting and non-contacting portions | |
JP2001153145A (en) | Hermetically sealed rolling bearing | |
WO2020009005A1 (en) | Sealing device | |
JP2001289249A (en) | Cage for ball bearing and ball bearing | |
JP2006258131A (en) | Rolling bearing | |
JP2008025685A (en) | Rolling bearing | |
JP2005069404A (en) | Sealed roller bearing | |
JP2010043693A (en) | Rolling bearing | |
JP2009127668A (en) | Hermetically sealing device | |
JP4466139B2 (en) | Rolling bearing sealing structure | |
JP7003683B2 (en) | Angular contact ball bearings, bearing devices, and spindle devices | |
JP6722517B2 (en) | Sealing device | |
JP2003097565A (en) | Angular ball bearing | |
JP2003074673A (en) | Sealing structure of pulley unit | |
WO2019044528A1 (en) | Angular ball bearing, bearing device, and spindle device | |
JP2004052793A (en) | Rolling bearing | |
JP2004084813A (en) | Rolling bearing | |
JP2017057964A (en) | Rolling bearing with seal | |
US9217472B2 (en) | Seal equipped bearing assembly | |
JP2001271841A (en) | Crown-type cage for ball bearing, and ball bearing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20050302 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20080117 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080122 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20080527 |