JP2002188652A - Rolling bearing - Google Patents
Rolling bearingInfo
- Publication number
- JP2002188652A JP2002188652A JP2000392942A JP2000392942A JP2002188652A JP 2002188652 A JP2002188652 A JP 2002188652A JP 2000392942 A JP2000392942 A JP 2000392942A JP 2000392942 A JP2000392942 A JP 2000392942A JP 2002188652 A JP2002188652 A JP 2002188652A
- Authority
- JP
- Japan
- Prior art keywords
- seal
- fitting
- rolling bearing
- seal member
- 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
- F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
- F16C33/783—Details of the sealing or parts thereof, e.g. geometry, material of the mounting region
-
- 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
- F16C33/7856—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 with a single sealing lip
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、シール部材を備え
た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 provided with a sealing member.
【０００２】[0002]
【従来の技術】図５（Ａ）及び（Ｂ）に、シール部材を
備えた転がり軸受の例を示す。図５（Ａ）の転がり軸受
８０は、一端（外径側端部）が外輪８１に固定されると
ともに、他端（内径側端部）が内輪８２に当接したシー
ル部材８３を備えている。シール部材８３は、外輪８１
に備えられたシール溝８１ａに外径側端部を圧入固定さ
れている。2. Description of the Related Art FIGS. 5A and 5B show an example of a rolling bearing provided with a seal member. The rolling bearing 80 shown in FIG. 5A includes a seal member 83 having one end (outer diameter side end) fixed to the outer ring 81 and the other end (inner diameter side end) abutting against the inner ring 82. . The seal member 83 includes an outer ring 81.
The outer diameter side end portion is press-fitted and fixed to the seal groove 81a provided in the first portion.
【０００３】図５（Ｂ）の転がり軸受９０は、外径側端
部が外輪９１に圧入固定されるとともに、内径側端部が
内輪８２に当接したシール部材８３と、シール部材８３
の内径側端部を内輪９２に向けて付勢する環状の付勢手
段であるガータスプリング９４とを備えている。このタ
イプの転がり軸受９０では、高い密封性が得られる。[0005] A rolling bearing 90 shown in FIG. 5B has a seal member 83 whose outer diameter end is press-fitted and fixed to an outer race 91, and whose inner diameter end contacts an inner race 82, and a seal member 83.
And a garter spring 94 which is an annular urging means for urging the inner diameter side end portion toward the inner ring 92. In this type of rolling bearing 90, high sealing performance is obtained.
【０００４】軸受回転時に、シール部材８３，９３が外
輪８１，９１から外れる所謂シール外れや、内輪８２，
９２の回転に伴ってシール部材８３，９３がつれ回る所
謂シール共回りを防ぐために、しめしろ（圧ばめしろ）
を大きくとってシール部材８３，９３を外輪８１，９１
にきつく固定する対策がなされている。図５（Ｂ）のタ
イプの転がり軸受９０では、特にシール部材９３を外輪
９１にきつく固定する必要がある。When the bearings rotate, the seal members 83 and 93 come off the outer rings 81 and 91, that is, the inner rings 82 and 93.
In order to prevent the seal members 83 and 93 from rotating together with the rotation of the so-called seal member 83, a so-called seal co-rotation is performed.
And seal members 83 and 93 are attached to outer races 81 and 91.
Measures have been taken to tighten tightly. In the case of the rolling bearing 90 of the type shown in FIG. 5B, it is particularly necessary to fix the seal member 93 tightly to the outer ring 91.
【０００５】[0005]
【発明が解決しようとする課題】上述のように、シール
部材を外輪にきつく圧入固定する場合、シール部材の外
輪への組付作業が極めて煩雑になる。また、外輪やシー
ル部材を塑性変形させてしまい、それら部品が無駄にな
ることがあった。本発明は、上記事情に鑑みてなされた
ものであって、その目的は、シール部材を軌道輪に容易
に固定でき、シール外れやシール共回りを確実に防ぐこ
とができる転がり軸受を提供することにある。As described above, when the sealing member is tightly pressed into the outer ring, the operation of assembling the sealing member to the outer ring becomes extremely complicated. In addition, the outer ring and the seal member may be plastically deformed, and these parts may be wasted. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a rolling bearing that can easily fix a seal member to a bearing ring and can reliably prevent a seal from coming off and a co-rotation of the seal. It is in.
【０００６】[0006]
【課題を解決するための手段】本発明の前記目的は、シ
ール部材を備えた転がり軸受において、軸受回転時のシ
ール外れ及びシール共回りを防ぐために、前記シール部
材に嵌合凸部が設けられ、軌道輪に前記嵌合凸部が嵌合
される嵌合凹部が設けられたことを特徴とする転がり軸
受によって達成される。例えば嵌合凸部及び嵌合凹部
は、シール部材及び軌道輪にそれぞれ、周方向に間隔を
あけて複数設けることができる。好ましくは、外輪及び
内輪に接触するシール部材を備えた転がり軸受におい
て、軸受回転時のシール外れ及びシール共回りを防ぐた
めに、前記シール部材の外径側端部に嵌合凸部が設けら
れ、前記外輪に前記嵌合凸部が嵌合される嵌合凹部が設
けられた構成とすることができる。SUMMARY OF THE INVENTION It is an object of the present invention to provide a rolling bearing provided with a seal member, wherein the seal member is provided with a fitting projection in order to prevent the seal from rotating and the seal from rotating when the bearing rotates. The rolling bearing is characterized in that a fitting recess in which the fitting projection is fitted is provided in the race. For example, a plurality of fitting protrusions and fitting recesses can be provided on the seal member and the bearing ring at intervals in the circumferential direction. Preferably, in a rolling bearing provided with a seal member that comes into contact with the outer ring and the inner ring, a fitting convex portion is provided at an outer diameter side end portion of the seal member in order to prevent the seal from rotating and the seal from rotating when the bearing rotates. The outer ring may be provided with a fitting recess in which the fitting protrusion is fitted.
【０００７】以上のような転がり軸受においては、嵌合
凸部と嵌合凹部との嵌合作用がシール外れ及びシール共
回りの防止効果を奏するので、従来ほどしめしろを大き
くとらなくてもシール部材を軌道輪に確実に固定でき
る。したがって、シール外れ及びシール共回りを防止し
つつ、シール部材を軌道輪に容易に固定できる。また、
軌道輪やシール部材を塑性変形させてしまうこともなく
なり、生産性が向上する。In the above-mentioned rolling bearing, since the fitting action between the fitting projection and the fitting recess exerts the effect of preventing the seal from coming off and the co-rotation of the seal, the sealing can be performed without increasing the interference as in the prior art. The member can be securely fixed to the bearing ring. Therefore, the seal member can be easily fixed to the race while preventing the seal from coming off and the seal from rotating together. Also,
The bearing ring and the seal member are not plastically deformed, and productivity is improved.
【０００８】軌道輪に設けられる嵌合凹部は、その凹面
が、軸受回転中心線にほぼ平行な仮想線上に曲率中心を
有する円弧面状であることが好ましい。このような形状
の嵌合凹部は、ミーリング加工等によって、軌道輪に容
易に形成することができる。また、シール部材の嵌合凸
部は、先細り形状であることが好ましい。こうすれば、
嵌合凸部を軌道輪の嵌合凹部に容易に嵌合させることが
できる。It is preferable that the fitting concave portion provided on the bearing ring has an arcuate surface having a center of curvature on an imaginary line substantially parallel to the bearing rotation center line. The fitting recess having such a shape can be easily formed on the raceway by milling or the like. Further, the fitting projection of the seal member is preferably tapered. This way,
The fitting projection can be easily fitted into the fitting recess of the race.
【０００９】[0009]
【発明の実施の形態】以下、図面に基づいて本発明の実
施形態を説明する。図１に示す本発明第１実施形態の転
がり軸受１０は、一端（外径側端部）が外輪１１に固定
されるとともに、他端（内径側端部）が内輪１２に当接
したシール部材１３を備えている。シール部材１３は、
芯金部１３ａとゴム部（弾性部）１３ｂとを有してい
る。芯金部１３ａは外輪１１及び内輪１２に接していな
い。外輪１１に設けられたシール溝１１ａに、ゴム部１
３ｂの外径側端部が圧入されている。ゴム部１３ｂの内
径側端部が内輪１２に当接している。Embodiments of the present invention will be described below with reference to the drawings. A rolling member 10 according to a first embodiment of the present invention shown in FIG. 1 has a seal member in which one end (an outer end) is fixed to an outer ring 11 and the other end (an inner end) is in contact with an inner ring 12. 13 is provided. The sealing member 13
It has a core part 13a and a rubber part (elastic part) 13b. The core 13a is not in contact with the outer race 11 and the inner race 12. A rubber groove 1 is provided in a seal groove 11a provided in the outer race 11.
The outer diameter side end of 3b is press-fitted. The inner diameter side end of the rubber portion 13b is in contact with the inner race 12.
【００１０】シール部材１３のゴム部１３ｂの外径側端
部（ここでは外径面）には、嵌合凸部１５が設けられて
いる。嵌合凸部１５は、ゴム部１３ｂの外径面に、周方
向に間隔をあけて複数設けられている。嵌合凸部１５の
先端面は、図示しない転動体側（図では左側）に向かう
ほど軸受回転中心線に接近するような傾斜面１５ａにな
っている。すなわち、嵌合凸部１５は先細り形状にされ
ている。そして、外輪１１の内径面には、より詳しくは
シール溝１１ａの底面には、シール部材１３の嵌合凸部
１５が嵌合される嵌合凹部１１ｂが設けられている。嵌
合凹部１１ｂは、その凹面が、軸受回転中心線にほぼ平
行な仮想線上に曲率中心を有する円弧面状に形成されて
いる。A fitting projection 15 is provided at an outer diameter side end (here, an outer diameter surface) of the rubber portion 13b of the seal member 13. The plurality of fitting protrusions 15 are provided on the outer diameter surface of the rubber portion 13b at intervals in the circumferential direction. The distal end surface of the fitting projection 15 is an inclined surface 15a that approaches the bearing rotation center line toward the rolling element (not shown) (left side in the figure). That is, the fitting projection 15 is tapered. A fitting recess 11b into which the fitting protrusion 15 of the seal member 13 is fitted is provided on the inner diameter surface of the outer ring 11, more specifically, on the bottom surface of the seal groove 11a. The fitting concave portion 11b has a concave surface formed in an arc shape having a center of curvature on an imaginary line substantially parallel to the bearing rotation center line.
【００１１】図２は、図１におけるII−II断面図であ
る。図２に示すように、嵌合凹部１１ｂはその凹面が円
弧面状である。このような嵌合凹部１１ｂは、ミーリン
グ加工等によって容易に形成できる。シール部材１３の
嵌合凸部１５は、ここでは矩形状に形成されている。FIG. 2 is a sectional view taken along the line II-II in FIG. As shown in FIG. 2, the fitting concave portion 11b has an arc-shaped concave surface. Such a fitting recess 11b can be easily formed by milling or the like. Here, the fitting projection 15 of the seal member 13 is formed in a rectangular shape.
【００１２】以上のような転がり軸受１０においては、
嵌合凸部１５と嵌合凹部１１ｂとの嵌合作用が、シール
外れ及びシール共回りの防止効果を奏するので、それほ
どしめしろを大きくとらなくてもシール部材１３を外輪
１１に確実に固定できる。したがって、シール外れ及び
シール共回りを防止しつつ、シール部材１３を外輪１１
に容易に固定できる。また、外輪１１やシール部材１３
を塑性変形させてしまうこともなくなり、生産性が向上
する。In the rolling bearing 10 as described above,
Since the fitting action between the fitting convex portion 15 and the fitting concave portion 11b has the effect of preventing the seal from coming off and the co-rotation of the seal, the seal member 13 can be securely fixed to the outer race 11 without having to take a large interference. . Therefore, the seal member 13 is fixed to the outer ring 11 while preventing the seal from coming off and the seal from rotating together.
It can be fixed easily. In addition, the outer ring 11 and the sealing member 13
Is not plastically deformed, and productivity is improved.
【００１３】図３に、本発明第２実施形態の要部を示
す。図３に示すように、本実施形態においては、外輪に
設けられた嵌合凹部２１ｂの凹面が、軸受回転中心線に
ほぼ平行な仮想線上に曲率中心を有する円弧面状に形成
されているとともに、シール部材２３の嵌合凸部２５の
凸面が、嵌合凹部２１ｂの凹面に対応した円弧面状に形
成されている。すなわち、嵌合凸部２５の凸面が、軸受
回転中心線にほぼ平行な仮想線上に曲率中心を有する円
弧面状に形成されている。なお、図示しない他の構成
は、第１実施形態と同様とすることができる。FIG. 3 shows a main part of a second embodiment of the present invention. As shown in FIG. 3, in the present embodiment, the concave surface of the fitting concave portion 21b provided on the outer ring is formed in an arc shape having a center of curvature on an imaginary line substantially parallel to the bearing rotation center line. The convex surface of the fitting convex portion 25 of the seal member 23 is formed in an arc shape corresponding to the concave surface of the fitting concave portion 21b. That is, the convex surface of the fitting convex portion 25 is formed in an arc shape having a center of curvature on an imaginary line substantially parallel to the bearing rotation center line. Note that other configurations not shown can be the same as those of the first embodiment.
【００１４】以上のような転がり軸受においては、嵌合
凸部２５と嵌合凹部２１ｂとの嵌合作用によって、シー
ル外れ及びシール共回りを確実に防止できる。In the above-described rolling bearing, the detachment of the seal and the co-rotation of the seal can be reliably prevented by the fitting operation between the fitting projection 25 and the fitting recess 21b.
【００１５】図４に、本発明第３実施形態を示す。この
転がり軸受３０においては、シール部材３３のゴム部３
３ｂの外径側端部の内側面に、図示しない転動体に向か
う方向に、すなわち軸受回転中心線にほぼ平行な方向に
突出する嵌合凸部３５が設けられている。そして、外輪
３１に設けられたシール溝３１ａの側面に、嵌合凸部３
５が嵌合される嵌合凹部３１ｂが設けられている。嵌合
凹部３１ｂは、軸受半径方向にほぼ平行な仮想線上に曲
率中心を有する円弧面状とすることができる。以上のよ
うな転がり軸受３０によっても、シール外れ及びシール
共回りを顕著に防止できる。FIG. 4 shows a third embodiment of the present invention. In this rolling bearing 30, the rubber portion 3 of the seal member 33 is provided.
A fitting projection 35 is provided on the inner surface of the outer diameter side end of 3b so as to project toward a rolling element (not shown), that is, a direction substantially parallel to the bearing rotation center line. The fitting protrusion 3 is provided on the side surface of the seal groove 31a provided in the outer race 31.
5 is provided with a fitting concave portion 31b. The fitting recess 31b can be formed in an arc shape having a center of curvature on an imaginary line substantially parallel to the bearing radial direction. The rolling bearing 30 as described above can also remarkably prevent the separation of the seal and the co-rotation of the seal.
【００１６】なお、本発明は前述した実施形態、実施例
に限定されるものではなく、適宜な変形、改良等が可能
である。例えば、本発明はガータスプリング等の付勢手
段を備えるタイプのものにも適用できる。また、シール
部材を内輪に固定するタイプのものにも適用できる。The present invention is not limited to the above-described embodiments and examples, but can be appropriately modified and improved. For example, the present invention can be applied to a type having a biasing means such as a garter spring. Further, the present invention is also applicable to a type in which the seal member is fixed to the inner ring.
【００１７】[0017]
【発明の効果】以上説明したように、本発明によれば、
シール部材を軌道輪に容易に固定でき、シール外れやシ
ール共回りを確実に防ぐことができる転がり軸受を提供
できる。As described above, according to the present invention,
It is possible to provide a rolling bearing that can easily fix the seal member to the race and can surely prevent the seal from coming off and the seal from rotating together.
【図１】本発明の第１実施形態を示す断面図である。FIG. 1 is a sectional view showing a first embodiment of the present invention.
【図２】図１におけるII−II断面図である。FIG. 2 is a sectional view taken along line II-II in FIG.
【図３】本発明の第２実施形態の要部を示す図である。FIG. 3 is a diagram showing a main part of a second embodiment of the present invention.
【図４】本発明の第３実施形態を示す断面図である。FIG. 4 is a sectional view showing a third embodiment of the present invention.
【図５】従来の転がり軸受を示す断面図である。FIG. 5 is a sectional view showing a conventional rolling bearing.
１０ 転がり軸受 １１ 外輪（軌道輪） １１ｂ 嵌合凹部 １２ 内輪 １３ シール部材 １５ 嵌合凸部 DESCRIPTION OF SYMBOLS 10 Rolling bearing 11 Outer ring (track ring) 11b Fitting concave part 12 Inner ring 13 Seal member 15 Fitting convex part
Claims (1)
て、軸受回転時のシール外れ及びシール共回りを防ぐた
めに、前記シール部材に嵌合凸部が設けられ、軌道輪に
前記嵌合凸部が嵌合される嵌合凹部が設けられたことを
特徴とする転がり軸受。In a rolling bearing provided with a seal member, a fitting convex portion is provided on the seal member so as to prevent the seal from coming off and rotating together with the seal when the bearing rotates, and the fitting convex portion is fitted on a raceway ring. A rolling bearing, wherein a fitting recess to be fitted is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000392942A JP2002188652A (en) | 2000-12-25 | 2000-12-25 | Rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000392942A JP2002188652A (en) | 2000-12-25 | 2000-12-25 | Rolling bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002188652A true JP2002188652A (en) | 2002-07-05 |
Family
ID=18858848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000392942A Pending JP2002188652A (en) | 2000-12-25 | 2000-12-25 | Rolling bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002188652A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008139792A1 (en) * | 2007-05-07 | 2008-11-20 | Ntn Corporation | Double-offset constant velocity universal joint |
| JP2009281547A (en) * | 2008-05-23 | 2009-12-03 | Nsk Ltd | Sealed rolling bearing |
| JP2012112518A (en) * | 2010-11-04 | 2012-06-14 | Jtekt Corp | Shell-type roller bearing |
| JP2015222096A (en) * | 2014-05-22 | 2015-12-10 | 日本精工株式会社 | Bearing for idler pulley |
-
2000
- 2000-12-25 JP JP2000392942A patent/JP2002188652A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008139792A1 (en) * | 2007-05-07 | 2008-11-20 | Ntn Corporation | Double-offset constant velocity universal joint |
| JP2009281547A (en) * | 2008-05-23 | 2009-12-03 | Nsk Ltd | Sealed rolling bearing |
| JP2012112518A (en) * | 2010-11-04 | 2012-06-14 | Jtekt Corp | Shell-type roller bearing |
| JP2015222096A (en) * | 2014-05-22 | 2015-12-10 | 日本精工株式会社 | Bearing for idler pulley |
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