JP2002021861A - Sealed rolling bearing device - Google Patents
Sealed rolling bearing deviceInfo
- Publication number
- JP2002021861A JP2002021861A JP2000206726A JP2000206726A JP2002021861A JP 2002021861 A JP2002021861 A JP 2002021861A JP 2000206726 A JP2000206726 A JP 2000206726A JP 2000206726 A JP2000206726 A JP 2000206726A JP 2002021861 A JP2002021861 A JP 2002021861A
- Authority
- JP
- Japan
- Prior art keywords
- seal
- seal holder
- seal body
- engaging portion
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
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
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7813—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for tapered roller bearings
-
- 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
- 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
- F16C19/38—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 two or more rows of rollers
- F16C19/383—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 two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
- F16C19/388—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 two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with four rows, i.e. four row tapered roller bearings
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、例えば、鉄鋼設
備、圧延機等に使用されるロールネック用の密封転がり
軸受装置に関し詳しくは、軸受と外部を遮断し、軸受内
部への水・スケールの浸入防止および内部に充填した転
動体潤滑用のグリース、オイルエア潤滑等を密封する密
封転がり軸受装置に関する。尚、本明細書において、シ
ールホルダ部とは、外輪と別体に形成され、外輪端面に
密接されるシールホルダ内に形成されるシール体を取付
ける部位、および別体のシールホルダを取付けることな
く直接外輪端部に形成されるシール体を取付ける部位を
総称して言うものとする。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealed rolling bearing device for a roll neck used in, for example, steel equipment and rolling mills. The present invention relates to a sealed rolling bearing device for preventing intrusion and lubricating grease, oil-air lubrication, and the like for rolling elements filled therein. In the present specification, the seal holder portion is formed separately from the outer ring, and a portion for mounting a seal body formed in a seal holder that is in close contact with the outer ring end surface, and without attaching a separate seal holder. The part to which the seal body formed directly at the end of the outer ring is directly attached is generally referred to.
【０００２】[0002]
【従来の技術】鉄鋼用圧延機に使用されるロールネック
軸受は４列円錐ころ軸受が多く用いられている。鉄鋼用
圧延機は圧延精度を確保するため大量の圧延水が使用さ
れる。このためロールネック軸受はこの圧延水の浸入を
防止する必要がある。図１４は、鉄鋼用圧延機に主に用
いられる密封装置１００を有する４列円錐ころ軸受を示
す。同図に示す４列円錐ころ軸受は、内輪と、外輪と、
内輪と外輪との間にそれぞれ複数個配置された４列の円
錐ころと、円錐ころを保持する保持器と、両端部に設け
られた密封装置からなる。密封装置は、４列円錐ころ軸
受への圧延水の浸入を防止するものであり、図１５に拡
大して示す。この密封装置１００は環状のシールホルダ
６００のシールホルダ部６０２内周にシール体７００を
嵌入したものである。2. Description of the Related Art As a roll neck bearing used in a steel rolling mill, a four-row tapered roller bearing is often used. A large amount of rolling water is used in a steel rolling mill to ensure rolling accuracy. Therefore, it is necessary for the roll neck bearing to prevent the infiltration of the rolling water. FIG. 14 shows a four-row tapered roller bearing having a sealing device 100 mainly used in a steel rolling mill. The four-row tapered roller bearing shown in the figure has an inner ring, an outer ring,
It comprises four rows of tapered rollers, each of which is disposed between the inner ring and the outer ring, a retainer for holding the tapered rollers, and sealing devices provided at both ends. The sealing device prevents rolling water from entering the four-row tapered roller bearing, and is shown in an enlarged scale in FIG. In the sealing device 100, a seal body 700 is fitted into the inner periphery of a seal holder portion 602 of an annular seal holder 600.
【０００３】また、図１５に示すような別体に形成され
たシールホルダを備えず、直接外輪にシールホルダ部６
０２を形成し、該シールホルダ部６０２内周にシール体
７００を嵌入した図１６に示すような密封装置１０１も
ある。Further, a seal holder formed as a separate body as shown in FIG.
There is also a sealing device 101 as shown in FIG. 16 in which a seal member 700 is formed and a seal body 700 is fitted on the inner periphery of the seal holder portion 602.
【０００４】図１５の密封装置１００は、上記シールホ
ルダ６００の側面を軸受外輪２００に密接させるととも
に、シール体７００のリップ部７０１を軸受内輪３００
の外周面３０１に摺接させることにより、軸受の外部を
遮断するものである。また図１６においても同様であ
る。[0005] In the sealing device 100 shown in FIG. 15, the side surface of the seal holder 600 is brought into close contact with the bearing outer ring 200, and the lip 701 of the seal body 700 is attached to the bearing inner ring 300.
By slidingly contacting the outer peripheral surface 301, the outside of the bearing is shut off. The same applies to FIG.
【０００５】[0005]
【発明が解決しようとする課題】ところで、図１５
（ａ）の例をもって説明すると、上記軸受はかご形保持
器５００を有しており、該保持器５００の底部５０１が
軸受部幅Ｃからはみ出るような構造になっている（図１
５（ａ）参照）。However, FIG.
Describing with the example of (a), the bearing has a cage cage 500, and the bottom portion 501 of the cage 500 is configured to protrude from the bearing portion width C (FIG. 1).
5 (a)).
【０００６】従って、保持器５００とシール体７００お
よびシールホルダ６００とが干渉しないようにシールホ
ルダ６００幅を大きくし、シール体７００を外側に寄せ
る必要がある。このため、軸受部のスペースが制約さ
れ、負荷容量の低下を余儀なくされている。そこで図１
５（ｂ）に示すような密封装置が用いられている。Therefore, it is necessary to increase the width of the seal holder 600 so that the cage 500 does not interfere with the seal body 700 and the seal holder 600, and to move the seal body 700 outward. For this reason, the space of the bearing portion is restricted, and the load capacity must be reduced. So Figure 1
A sealing device as shown in FIG. 5 (b) is used.
【０００７】図１５（ｂ）に示す密封装置１００は、シ
ール体７００が矩形部７０２を有しており、矩形部７０
２により形成される空間７０３に保持器５００の底部５
０１が潜り込めるため、保持器５００とシール体７００
が干渉せず、シールホルダ６００の幅を狭くできるの
で、軸受の負荷容量を大きくすることが出来る。[0007] In the sealing device 100 shown in FIG. 15B, the sealing body 700 has a rectangular portion 702, and the rectangular portion 70
2 in the space 703 formed by the bottom 5 of the retainer 500.
01 can enter, the retainer 500 and the seal 700
Does not interfere with each other and the width of the seal holder 600 can be reduced, so that the load capacity of the bearing can be increased.
【０００８】ところで、密封４列円錐ころ軸受は、チョ
ックへの組付け、取り外しをグリース等が封入されたま
ま軸受を組み立てた状態で行う必要があるため、図１４
に示す様な専用の軸受吊り治具８００が必要である。Incidentally, in the sealed four-row tapered roller bearing, it is necessary to assemble and remove the bearing from the chock in a state where the bearing is assembled with grease or the like sealed therein.
A dedicated bearing suspension jig 800 as shown in FIG.
【０００９】しかし、図１５（ｂ）の密封装置における
シール体７００は、シールホルダ６００に設けた溝６０
１と軸受外輪端面とで挟み込むフランジ部７０４から水
平状に矩形部７０２を設けて構成されているものである
ため、その構造上シールホルダ６００の内径が大きく、
シール体７００の断面高さが大きくなり、軸受の組立、
組み込み時に用いられる軸受吊り治具８００が使えなく
なる問題が生じている（図１５（ｂ）参照）。すなわ
ち、軸受吊り治具８００の爪部がシールホルダ６００に
届かず、爪部がシール体７００に当接し、つり上げ時に
爪部により、シール体７００が、変形もしくは損傷する
虞れがある。However, the seal 700 in the sealing device shown in FIG.
Since the rectangular portion 702 is provided horizontally from the flange portion 704 sandwiched between the bearing member 1 and the end surface of the bearing outer ring, the inner diameter of the seal holder 600 is large due to its structure.
The cross-sectional height of the seal body 700 becomes large,
There is a problem that the bearing hanging jig 800 used at the time of assembling cannot be used (see FIG. 15B). That is, the claw portion of the bearing hanging jig 800 does not reach the seal holder 600, and the claw portion abuts on the seal member 700, so that the seal member 700 may be deformed or damaged by the claw portion during lifting.
【００１０】前記問題を解決すべく、シール体と保持器
が干渉しない条件を満足しながら、高負荷容量を成し
得、通常の軸受に用いて吊り治具を共通に使用すること
ができる転がり軸受の密封装置として、特開平１１−２
５７３６１に示すものがある。この構造はシール体との
干渉を避けるようにシールホルダ部のシール空間に保持
器の一端を潜り込ませた形状とし、シールホルダ部の内
径寸法を小さくし、吊り治具のセットスペースを確保し
ている。しかしながら、特開平１１−２５７３６１の構
造は、シールホルダ部の幅が小さくなる制約が生じるこ
とから、シール体の嵌合力が低下し易くなり、嵌合部の
しめしろと幅寸法の設計によっては軸受取扱い時などに
抜け出すことが起こり得る。これは、例えばシールホル
ダ単体で取り扱う際に起こり得る。In order to solve the above-mentioned problem, a high load capacity can be achieved while satisfying the condition that the seal body and the cage do not interfere with each other, and the rolling jig can be commonly used for a normal bearing. Japanese Patent Application Laid-Open No. Hei 11-2 as a bearing sealing device
57361. This structure has a shape in which one end of the cage is sunk into the seal space of the seal holder so as to avoid interference with the seal body, reducing the inner diameter of the seal holder and securing the set space for the hanging jig. I have. However, in the structure disclosed in Japanese Patent Application Laid-Open No. H11-257361, since the width of the seal holder is restricted, the fitting force of the seal body is likely to be reduced. It may come off during handling. This can occur, for example, when handling the seal holder alone.
【００１１】本発明は従来技術の有するこのような問題
点に鑑がみなされたもので、その目的とするところは、
シール体と保持器が干渉しない条件を満足しながら、高
負荷容量を為し得るという特徴を失うこと無く、通常の
軸受に用いていた吊り治具を共通に使用することが出来
るものであって、さらにシールホルダ部へのシール体の
嵌合力を向上させ、シール体の抜け止め性能を向上させ
た転がり軸受の密封装置を提供することである。The present invention has been made in view of the above-mentioned problems of the prior art.
A suspension jig used for a normal bearing can be used in common without losing the feature that a high load capacity can be achieved while satisfying a condition that the seal body and the retainer do not interfere with each other. Another object of the present invention is to provide a sealing device for a rolling bearing in which the fitting force of the seal body to the seal holder portion is further improved, and the performance of preventing the seal body from falling off is improved.
【００１２】[0012]
【課題を解決するための手段】上記課題を達成するため
に本発明がなした技術的手段は、外輪と、内輪と、外輪
と内輪との間に転動自在に設けられた複数個の転動体
と、転動体を保持する保持器と、外輪と内輪との間を密
封する密封装置とを有する密封転がり軸受装置におい
て、密封装置は、外輪に直接形成あるいは外輪に密接さ
れる別体のシールホルダに形成されたシールホルダ部
と、シールホルダ部に取付けられるシール体とからな
り、シール体との干渉を避けるようにしてシールホルダ
部のシール空間に保持器一端部を潜り込ませ、シールホ
ルダ部に設けた係合部にシール体を係合したことであ
る。詳しくは、別体に成形され、外輪端面に密接される
シールホルダ内に形成されるシール体を取付ける部位、
あるいは別体のシールホルダを取付けることなく直接外
輪端部に形成されるシール体を取付ける部位であるシー
ルホルダ部にシールを装着し、かつ内輪の外周面に摺動
するシール体とによって、軸受と外部を遮断する軸受装
置において、シールホルダ部に嵌合されるシール体の嵌
合力を向上させてシール体の抜け止め性能を向上させる
ための形状・構造としたことである。In order to attain the above object, the present invention provides a technical means comprising an outer ring, an inner ring, and a plurality of rollers provided rotatably between the outer ring and the inner ring. In a sealed rolling bearing device having a moving body, a retainer holding a rolling element, and a sealing device for sealing between an outer ring and an inner ring, a sealing device is formed as a separate seal directly formed on the outer ring or closely contacted with the outer ring. A seal holder portion formed in the holder and a seal body attached to the seal holder portion, one end of the retainer is sunk into the seal space of the seal holder portion so as to avoid interference with the seal body, and the seal holder portion is formed. Is that the seal body was engaged with the engagement portion provided in the above. Specifically, a portion for mounting a seal body formed in a seal holder that is formed separately and is in close contact with the outer ring end face,
Alternatively, a seal is attached to a seal holder portion, which is a portion where a seal body formed directly at the end of the outer ring is mounted without attaching a separate seal holder, and the seal body slides on the outer peripheral surface of the inner ring to form a bearing. In a bearing device for shutting off the outside, a shape and a structure are provided for improving a fitting force of a seal body fitted to a seal holder portion and improving a retaining performance of the seal body.
【００１３】[0013]
【発明の実施の形態】以下、本発明の密封転がり軸受装
置における一実施形態を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a sealed rolling bearing device according to the present invention will be described below.
【００１４】図１は本発明の密封転がり軸受装置の一実
施形態を示す縦断面図、図２は密封装置部分を拡大して
示す第一実施形態の縦断面図、図３はシール体をシール
ホルダに嵌め込む状態を示す縦断面図である。FIG. 1 is a longitudinal sectional view showing an embodiment of a sealed rolling bearing device according to the present invention, FIG. 2 is an enlarged longitudinal sectional view of a first embodiment showing a portion of a sealing device, and FIG. It is a longitudinal cross-sectional view which shows the state fitted in a holder.
【００１５】図中１は軸受部、２は内周面に外輪軌道を
有する外輪、４は外周面に内輪軌道を有する内輪、６は
外輪軌道と内輪軌道との間に転動自在に設けられた転動
体（円錐ころ）、７は転動体を保持する保持器、８は密
封装置を示し、密封装置８は、本実施形態では外輪２と
別体に形成されると共に、該外輪２に密接させる環状の
シールホルダ９と、該シールホルダ９のシールホルダ部
９ａ内周に取付けられ、かつ内輪４の外周面５に摺接す
るシール体１７とによって構成され、外輪と内輪の間を
密封し軸受と外部を遮断する。該密封装置８は、シール
体１７との干渉を避けるようにシールホルダ部９ａのシ
ール空間に保持器７の一端７ａを潜り込ませた形状を有
し、シールホルダ部９ａの内径寸法ｄ（図２参照）を小
さくし、吊り治具８００のセットスペース確保を可能と
している。In the figure, 1 is a bearing portion, 2 is an outer ring having an outer raceway on an inner peripheral surface, 4 is an inner racer having an inner raceway on an outer peripheral surface, and 6 is rotatably provided between the outer raceway and the inner raceway. The rolling element (tapered roller), 7 is a retainer for holding the rolling element, 8 is a sealing device, and the sealing device 8 is formed separately from the outer ring 2 in this embodiment, and is in close contact with the outer ring 2. An annular seal holder 9 to be formed and a seal body 17 attached to the inner periphery of the seal holder portion 9a of the seal holder 9 and slidably in contact with the outer peripheral surface 5 of the inner ring 4 to seal between the outer ring and the inner ring and to provide a bearing. And shut off the outside. The sealing device 8 has a shape in which one end 7a of the holder 7 is sunk into the sealing space of the seal holder 9a so as to avoid interference with the seal body 17, and the inner diameter d of the seal holder 9a (see FIG. 2). Ref.) Is reduced, and a set space for the hanging jig 800 can be secured.
【００１６】尚、外輪２、内輪４、転動体６、保持器７
からなる軸受部１は一般的構造を適用可能で、本明細書
においての具体的な説明は省略し、また図示例に何等限
定されるものではなく、他の周知構造に変更可能であ
る。なお、転動体も図示せる円錐ころに限らず周知転動
体が適用可能である。The outer ring 2, the inner ring 4, the rolling elements 6, and the retainer 7
A general structure can be applied to the bearing portion 1 made of, and a specific description in this specification is omitted. The present invention is not limited to the illustrated example, and can be changed to another well-known structure. The rolling elements are not limited to the illustrated tapered rollers, and well-known rolling elements can be applied.
【００１７】シールホルダ９は、外輪２との接触面１５
側に鍔溝１６を有し、さらに鍔溝１６から傾斜状に円錐
面１０を形成し、該円錐面１０の端部から軸方向に延び
る円筒内周面１１を形成し、上記鍔溝１６・円錐面１０
および円筒内周面１１によりシールホルダ部９ａが形成
される。円筒内周面１１は、その周方向に係合部１２を
設けている。The seal holder 9 has a contact surface 15 with the outer ring 2.
Side, a conical surface 10 is formed obliquely from the flange groove 16, and a cylindrical inner peripheral surface 11 extending in the axial direction from an end of the conical surface 10 is formed. Conical surface 10
And the cylindrical inner peripheral surface 11 form a seal holder portion 9a. The cylindrical inner peripheral surface 11 is provided with an engaging portion 12 in the circumferential direction.
【００１８】シールホルダ９の外周面１３には、軸受ハ
ウジング（図示省略）に対する密閉性を確保するためＯ
リング１４が取り付けられている。また、シールホルダ
９の側面（接触面１５側）には環状の凸部１５ａが設け
られていて、外輪２の外周面３に嵌入される。An outer peripheral surface 13 of the seal holder 9 is provided with an O to secure a sealing property with respect to a bearing housing (not shown).
A ring 14 is attached. An annular convex portion 15 a is provided on the side surface (contact surface 15 side) of the seal holder 9, and is fitted into the outer peripheral surface 3 of the outer ring 2.
【００１９】係合部１２は、円筒内周面１１の周方向に
連続の溝とし、該溝形状は、断面矩形状を有する。ま
た、係合部１２を周方向に断続的な溝とすることも可能
であり、それぞれの係合部１２の断面形状および周方向
長さ・軸方向幅は特に限定されず、後述するシール体１
７に設けられる断続的な弾性突部が嵌入可能なものであ
ればよく任意である。The engaging portion 12 is a continuous groove in the circumferential direction of the inner peripheral surface 11 of the cylinder, and has a rectangular cross section. It is also possible to form the engaging portion 12 as an intermittent groove in the circumferential direction. The cross-sectional shape, circumferential length, and axial width of each engaging portion 12 are not particularly limited. 1
7 may be any as long as the intermittent elastic protrusions provided therein can be fitted.
【００２０】係合部１２の位置は、本実施形態では円筒
内周面１１の軸方向中央部付近としているが、後述する
シール体１７における弾性突部２４との関係において決
定されるもので、特に図示形態に限定解釈されるもので
はなく、円筒内周面１１の軸方向範囲内において適宜設
定・変更可能である。In the present embodiment, the position of the engaging portion 12 is near the axial center of the cylindrical inner peripheral surface 11, but is determined in relation to an elastic projection 24 of the seal body 17 described later. In particular, the present invention is not limited to the illustrated embodiment, and can be appropriately set and changed within an axial range of the cylindrical inner peripheral surface 11.
【００２１】本実施形態の係合部１２は、軸方向に単数
形成しているが、この係合部１２を軸方向に複数形成す
ることも、また係合部１２の軸方向幅も任意で、円筒内
周面１１の軸方向一杯に係合部１２を形成することも本
発明の範囲内である。また、係合部１２は、円筒内周面
１１における外側端部を周方向に切り欠いた連続若しく
は断続の溝としてもよい。さらに、このように円筒内周
面１１における外側端部にて設けた係合部１２と、円筒
内周面１１の軸方向中央部付近に設けた係合部１２とを
双方備えた構造としてもよい。In the present embodiment, a single engaging portion 12 is formed in the axial direction. However, a plurality of the engaging portions 12 may be formed in the axial direction, and the axial width of the engaging portion 12 may be arbitrarily set. It is also within the scope of the present invention to form the engaging portion 12 so as to cover the entire cylindrical inner peripheral surface 11 in the axial direction. Further, the engaging portion 12 may be a continuous or intermittent groove in which the outer end of the cylindrical inner peripheral surface 11 is cut out in the circumferential direction. Further, a structure having both the engaging portion 12 provided at the outer end portion of the cylindrical inner peripheral surface 11 and the engaging portion 12 provided near the axial center of the cylindrical inner peripheral surface 11 may be adopted. Good.
【００２２】シールホルダ９の外周面１３には、軸受ハ
ウジング（図示省略）に対する密閉性を確保するためＯ
リング１４が取り付けられている。The outer peripheral surface 13 of the seal holder 9 is provided with an O for securing a sealing property with respect to a bearing housing (not shown).
A ring 14 is attached.
【００２３】シール体１７は、例えば、芯金（金属環）
１７ａの外周に、ゴム・合成樹脂などの弾性材１７ｂを
加硫成形して一体的に構成され、大きく分けて、フラン
ジ部１８、円錐面１９、矩形部２０、リップ部２８によ
り構成され、該矩形部２０の嵌合部２１外周に弾性突部
２４を設けている。すなわち、本実施形態では、フラン
ジ部１８から矩形部２０までの外周全域を弾性材１７ｂ
にて被覆形成すると共に、リップ部２８を弾性材にて形
成している。The seal member 17 is made of, for example, a metal core (metal ring).
An elastic material 17b such as rubber or synthetic resin is vulcanized and formed integrally on the outer periphery of 17a. The elastic material 17b is integrally formed, and is roughly divided into a flange portion 18, a conical surface 19, a rectangular portion 20, and a lip portion 28. An elastic protrusion 24 is provided on the outer periphery of the fitting portion 21 of the rectangular portion 20. That is, in the present embodiment, the entire outer periphery from the flange portion 18 to the rectangular portion 20 is covered with the elastic material 17b.
And the lip portion 28 is formed of an elastic material.
【００２４】フランジ部１８は、半径方向に所望幅・所
望厚みをもって形成されている周縁で、シールホルダ９
に周設した鍔溝１６と外輪２の端面とで挟み込むことで
シール体１７を係止する。フランジ部１８の形状・軸方
向厚み・半径方向幅などの条件は限定されず任意であ
る。The flange portion 18 is a peripheral edge formed with a desired width and a desired thickness in the radial direction.
The seal member 17 is locked by being sandwiched between the flange groove 16 provided around the outer ring 2 and the end face of the outer ring 2. Conditions such as the shape, axial thickness, and radial width of the flange portion 18 are not limited and are arbitrary.
【００２５】円錐面１９は、上記フランジ部１８の端部
からシールホルダ部９ａの円錐面１０に密接する傾斜状
態をもって形成されている。円錐面１９の幅・傾斜状態
は、特に限定されるものではなく、シールホルダ部９ａ
の円錐面１０と密接する幅・傾斜状態であればよい。The conical surface 19 is formed so as to be inclined from the end of the flange 18 to the conical surface 10 of the seal holder 9a. The width / inclination state of the conical surface 19 is not particularly limited, and the seal holder portion 9a
It is sufficient if the width and the inclination state are in close contact with the conical surface 10.
【００２６】矩形部２０は、上記円錐面の端部から軸方
向に延設された円筒状の嵌合部２１と、該嵌合部２１端
部から半径方向に延設された平坦面２２と、該平坦面２
２とリップ部２８との間に掛け渡された傾斜面２３とで
構成されている。嵌合部２１は、シールホルダ部９ａの
円筒内周面１１と密接する略同一の軸方向幅を有し、そ
の外周周方向には係合部１２に嵌入可能な幅で周方向に
連続する縦断面視矩形状に形成されている弾性突部２４
が設けられている。The rectangular portion 20 has a cylindrical fitting portion 21 extending in the axial direction from the end of the conical surface, and a flat surface 22 extending in the radial direction from the end of the fitting portion 21. , The flat surface 2
2 and the lip portion 28. The fitting portion 21 has substantially the same axial width that is in close contact with the cylindrical inner peripheral surface 11 of the seal holder portion 9a, and has a width that can be fitted into the engaging portion 12 in the outer circumferential direction and is continuous in the circumferential direction. Elastic projection 24 formed in a rectangular shape in a longitudinal sectional view
Is provided.
【００２７】リップ部２８の構造は図示例に限定される
ものではなく本発明の範囲内において周知の構造が適宜
選択される。The structure of the lip portion 28 is not limited to the illustrated example, and a known structure is appropriately selected within the scope of the present invention.
【００２８】上記弾性突部２４は、シールホルダ部９ａ
の円筒内周面１１にシール体１７が嵌合される際に、押
圧されて弾性変形しつつ係合部１２内に嵌め込まれてい
き、係合部１２位置にて凹凸嵌め合わせ部２５を形成す
る。また、弾性突部２４はシールホルダ９の係合部１２
構造に合わせて、嵌合部２１の軸方向に複数設けるもの
としたり、嵌合部２１の外側端部に若干の突部を周方向
に連続若しくは断続的に設けるものとすることも本発明
の範囲内である。なお、弾性突部２４は、弾性変形して
係合部１２に嵌入可能な形状・幅とすることが好ましい
が、係合部１２に弾性変形すること無く嵌まる形状・幅
のものとすることを別段妨げるものではない。The elastic projection 24 is provided on the seal holder 9a.
When the seal body 17 is fitted to the inner peripheral surface 11 of the cylinder, it is pressed and elastically deformed and is fitted into the engaging portion 12 to form the concave / convex fitting portion 25 at the position of the engaging portion 12. I do. Further, the elastic projections 24 are provided on the engagement portions 12 of the seal holder 9.
According to the structure of the present invention, a plurality of protrusions may be provided in the axial direction of the fitting portion 21, or some protrusions may be provided continuously or intermittently in the circumferential direction at the outer end of the fitting portion 21. Within range. It is preferable that the elastic projection 24 has a shape and a width that can be elastically deformed and fit into the engaging portion 12, but has a shape and a width that can be fitted into the engaging portion 12 without being elastically deformed. It does not hinder any other.
【００２９】なお、シール体１７は、少なくとも、係合
部１２と嵌合する弾性突部２４を嵌合部２１の外周に設
けているものであれば、弾性材１７ｂは、嵌合部２１に
該当する芯金１７ａの外周面部分にのみ設けられている
もの、若しくは芯金１７ａの外周面全体を被覆してなる
ものなど、または芯金１７ａ内外周全体を被覆してなる
ものなど任意であって特に限定されるものではない。If the seal body 17 has at least an elastic projection 24 fitted on the engaging portion 12 on the outer periphery of the fitting portion 21, the elastic member 17 b is attached to the fitting portion 21. Any one provided only on the outer peripheral surface portion of the corresponding cored bar 17a, one coated on the entire outer peripheral surface of the cored bar 17a, or one coated on the entire inner and outer periphery of the cored bar 17a is optional. Is not particularly limited.
【００３０】また、シール体１７は、金属以外の強度部
材（例えば、プラスチック等）からなる芯材と、ゴムと
同様の弾性を有する高分子材料（例えば、ポリテトラフ
ロロエチレン：PTFE等）からなる弾性材で構成されるも
のも利用可能であり、また、このようなゴムと同様な弾
性を有する高分子材料のみでシール体を構成してなるも
のであってもよく、何等上記実施形態に限定されず、シ
ール体１７の嵌合の際に、変形して係合部１２に嵌入可
能な構成であれば本発明の範囲内において他の材料も利
用可能である。The seal member 17 is made of a core material made of a strength member other than metal (for example, plastic) and a polymer material having the same elasticity as rubber (for example, polytetrafluoroethylene: PTFE). It is also possible to use an elastic material, and it is also possible to form a seal body only with a polymer material having elasticity similar to that of the rubber, and it is not limited to the above embodiment. However, other materials can be used within the scope of the present invention as long as the material can be deformed and fitted into the engagement portion 12 when the seal body 17 is fitted.
【００３１】従って、シール体１７は、矩形部２０の嵌
合部２１をシールホルダ部９ａの円筒内周面１１に摺接
させつつ押込むと、弾性突部２４が係合部１２に嵌入さ
れると共に、リップ部２８が内輪４の外周面５に摺接さ
れて軸受を密封することができ、弾性突部２４と係合部
１２とにより形成される凹凸嵌め合わせ部２５によって
シール体１７の抜け止性能が向上する。Therefore, when the fitting portion 21 of the rectangular portion 20 is pushed into the sealing body 17 while sliding the fitting portion 21 into the cylindrical inner peripheral surface 11 of the seal holder portion 9a, the elastic projection 24 is fitted into the engaging portion 12. At the same time, the lip 28 slides against the outer peripheral surface 5 of the inner ring 4 to seal the bearing, and the concave and convex fitting portion 25 formed by the elastic projection 24 and the engaging portion 12 allows the sealing member 17 to be sealed. The retaining performance is improved.
【００３２】また、シールホルダ部９ａとシール体１７
との嵌め合い面に、シールホルダ部９ａ側の円錐面１０
とシール体１７側の円錐面１９を設けることで、該円錐
面１９の傾斜により形成される空間部(円錐面１９の内
面側に形成される保持器潜り込み空間)２７にて軸受部
１からはみ出す保持器７の端部７ａを潜り込ませるもの
とすることができるため、保持器７がシール体１７と干
渉することが無く、かつシールホルダ９の内径寸法を小
さくすることができる（図２参照）。また、軸受部１の
幅を狭くしないで、かつシールホルダ９の外側面を小さ
くすることが出来る。このようにシールホルダ９の内径
を小さくできることから、吊り治具８００を使用して
も、その爪８０１は内輪４とシールホルダ９の外側面と
にわたって接し、該爪８０１がシール体１７を押圧する
ことがないためシール体１７の損傷もない。The seal holder 9a and the seal 17
The conical surface 10 on the seal holder 9a side
And the conical surface 19 on the side of the seal body 17, the protrusion 27 protrudes from the bearing portion 1 in a space portion 27 formed by the inclination of the conical surface 19 (a cage submerged space formed on the inner surface side of the conical surface 19). Since the end 7a of the retainer 7 can be sunk, the retainer 7 does not interfere with the seal body 17 and the inner diameter of the seal holder 9 can be reduced (see FIG. 2). . Further, the outer surface of the seal holder 9 can be reduced without reducing the width of the bearing portion 1. Since the inner diameter of the seal holder 9 can be reduced in this way, even when the hanging jig 800 is used, the claw 801 contacts the inner ring 4 and the outer surface of the seal holder 9, and the claw 801 presses the seal body 17. There is no damage to the seal body 17 because there is no occurrence.
【００３３】本実施形態では、上述の通りシールホルダ
９とシール体１７を構成しているが、シールホルダ９
は、シール体１７を嵌合するシールホルダ部９ａを有す
ると共に、係合部１２を有するものであれば特に他の構
造にあっては限定解釈されるものではなく、本発明の範
囲内で周知構造が適用可能である。シール体１７は、上
記シールホルダ部９ａに嵌合する構造を有すると共に、
係合部１２に嵌まる弾性突部２４を有するものであれば
特に他の構造にあっては限定解釈されるものではなく、
本発明の範囲内で周知構造が適用可能である。In this embodiment, the seal holder 9 and the seal body 17 are formed as described above.
Is not particularly limited in other structures as long as it has a seal holder portion 9a for fitting the seal body 17 and has an engaging portion 12, and is well known within the scope of the present invention. The structure is applicable. The seal body 17 has a structure that fits into the seal holder 9a,
It is not particularly limited to other structures as long as it has an elastic projection 24 that fits into the engagement portion 12.
Known structures are applicable within the scope of the present invention.
【００３４】例えば図示しないが、シールホルダ９は、
円錐面１０に代えて鍔溝１６の下端から周方向に連続す
る段部（切り欠き部）を設け、そして該段部下端から軸
方向に円筒内周面１１を周設形成する構造とすることも
可能である（図示省略）。そして、このような構造とす
る場合であっても、シール体１７は、上記説明した図２
記載のシール体１７と略同一構成でよい。また、フラン
ジ部１８は図２記載の実施形態よりも長尺状(半径方向
幅)に形成するものであってもよい。なお、このような
実施形態において、上述した構成以外の他の構成につい
ては、図２に開示した実施形態と同様である。For example, although not shown, the seal holder 9
In place of the conical surface 10, a step (notch) is provided continuously from the lower end of the flange groove 16 in the circumferential direction, and the cylindrical inner peripheral surface 11 is formed circumferentially from the lower end of the step in the axial direction. It is also possible (not shown). Then, even in the case of such a structure, the seal body 17 is provided in the above-described FIG.
The configuration may be substantially the same as the described seal body 17. Further, the flange portion 18 may be formed in a longer shape (radial width) than the embodiment shown in FIG. Note that, in such an embodiment, the other configuration than the above-described configuration is the same as the embodiment disclosed in FIG.
【００３５】さらに、特に図示しないが次のような実施
の形態によってもシールホルダ９の内径寸法ｄを小さく
できる。例えば、上述のシールホルダ部９ａに設けられ
る円錐面（テーパ）１０位置を、凹設して断面Ｒ形状と
するものであってもよい。尚、Ｒ形状のＲ状態は特に限
定されるものではなく、本発明の範囲内において自由に
設定可能である。また、シール体１７にはその断面Ｒ状
の凹設面に密接する断面Ｒ状の凸面を有するものとした
り、また上記実施形態と同様の円錐面１９が設けられて
いるものとすることもできる。Further, although not shown, the inner diameter d of the seal holder 9 can be reduced by the following embodiment. For example, the position of the conical surface (taper) 10 provided in the seal holder portion 9a may be recessed to have an R-shaped cross section. The R state of the R shape is not particularly limited, and can be freely set within the scope of the present invention. Further, the seal body 17 may have a convex surface having an R-shaped cross section that is in close contact with the concave surface having the R-shaped cross section, or may have a conical surface 19 similar to that of the above-described embodiment. .
【００３６】軸受吊り上げ時に掛かる圧力に耐え得る構
造、例えば、シール体１７の構成において、断面幅の大
きい金属環（補強芯金）を有したシール形状とし、該断
面幅の大きい補強芯金により吊り治具８００でシールを
直接吊り上げる時の圧力に耐え得ることが可能なシール
構造とすることも可能である。In a structure capable of withstanding the pressure applied when the bearing is lifted, for example, in the configuration of the seal body 17, a seal shape having a metal ring (reinforcing core) having a large cross-sectional width is used. It is also possible to adopt a seal structure that can withstand the pressure when the seal is directly lifted by the jig 800.
【００３７】また、本発明は、密封装置を用いる軸受
で、かつ保持器７が軸受部１の側面よりはみ出るタイプ
で、組込み治具を利用する軸受であれば４列円錐ころ軸
受以外でも利用可能である。すなわち、例えば、複列円
錐ころ軸受や、自動調心ころ軸受も本発明の適用可能範
囲であり、特に限定されるものでない。The present invention can also be applied to any bearing other than the four-row tapered roller bearing as long as it is a bearing using a sealing device and the retainer 7 protrudes from the side surface of the bearing portion 1 and uses a built-in jig. It is. That is, for example, double-row tapered roller bearings and self-aligning roller bearings are also applicable to the present invention, and are not particularly limited.
【００３８】上記実施形態では、別体に成形され、外輪
端面に密接されるシールホルダ内に形成されるシールホ
ルダ部をもって説明したが、外輪端部に直接環状のシー
ルホルダ部を形成するタイプであっても本発明の範囲内
であり、特に図示して説明はしないが、シールホルダ部
が外輪と一体か別体かの違いを有する点を除き、上記各
実施形態と同様の構成・作用効果を奏することはいうま
でもない。In the above embodiment, the seal holder portion formed inside the seal holder which is formed separately and is in close contact with the end surface of the outer ring has been described. However, a type in which the annular seal holder portion is formed directly at the end portion of the outer ring. Although it is also within the scope of the present invention and not particularly shown and described, the same configuration, operation and effects as those of the above-described embodiments except that the seal holder part is different from the outer ring with the outer ring. Needless to say,
【００３９】図４は第二実施形態の密封装置部分を拡大
して示す縦断面図、図５は図４の密封装置部分における
シール体をシールホルダ部に嵌め込む状態を示す縦断面
図である。本実施形態では、シール体１７の嵌合部２１
に設けられる弾性突部２４が、外面側にテーパ面２４ａ
をもつ縦断面視台形状に連続周設されており、一方、シ
ールホルダ部９ａの円筒内周面１１に設けられている係
合部１２は、上記テーパ面２４ａに密接する外面側テー
パ面１２ａをもつ縦断面視台形状に連続周設され、上記
弾性突部２４が嵌入可能なように、該弾性突部２４より
も僅かに幅狭に形成されている。本実施形態のシール体
１７をシールホルダ部９ａに挿入すると、シール体１７
の弾性突部２４がシールホルダ部９ａの係合部１２に弾
性変形して嵌入される（図５中の矢印は挿入方向を示
す。）。なお、その他の構成および作用効果は前記第一
実施形態と同一であるため、同一箇所に同一符号を付し
てその説明を省略する。FIG. 4 is an enlarged longitudinal sectional view showing a sealing device portion of the second embodiment, and FIG. 5 is a longitudinal sectional view showing a state in which a seal body in the sealing device portion of FIG. 4 is fitted into a seal holder portion. . In the present embodiment, the fitting portion 21 of the seal body 17 is used.
Is provided with a tapered surface 24a on the outer surface side.
The engaging portion 12 provided on the cylindrical inner peripheral surface 11 of the seal holder portion 9a has an outer tapered surface 12a closely contacting the tapered surface 24a. And is formed to be slightly narrower than the elastic protrusion 24 so that the elastic protrusion 24 can be fitted therein. When the seal 17 of this embodiment is inserted into the seal holder 9a, the seal 17
Is elastically deformed and fitted into the engaging portion 12 of the seal holder portion 9a (the arrow in FIG. 5 indicates the insertion direction). Since the other configuration and operation and effect are the same as those of the first embodiment, the same portions are denoted by the same reference numerals and description thereof will be omitted.
【００４０】従って、シールホルダ９の幅が小さくなる
制約が生じても、シール体１７の抜け止性能が向上する
と共に、シール体１７が挿入方向に対して傾斜状のテー
パ面２４ａをもって形成されているため、挿入性が向上
する。また、シール体１７は、その内面側に半径方向に
延びる垂直面２４ｂを設けると共に、シールホルダ部９
ａの係合部１２に上記垂直面２４ｂに密接可能な内面側
垂直面１２ｂを設けているため、上述の通り挿入性を向
上しつつも、抜け難い構成となっている。Therefore, even if there is a restriction that the width of the seal holder 9 becomes small, the performance of preventing the seal body 17 from coming off is improved, and the seal body 17 is formed with a tapered surface 24a inclined with respect to the insertion direction. Therefore, the insertability is improved. In addition, the seal body 17 is provided with a vertical surface 24b extending in the radial direction on the inner surface side, and the seal holder portion 9 is provided.
Since the inner side vertical surface 12b which can be in close contact with the vertical surface 24b is provided in the engaging portion 12a, as described above, the structure is hard to come off while improving the insertability.
【００４１】なお、上記テーパ面２４ａの傾斜状態およ
び幅にあっては特に限定されるものではなく挿入方向に
傾斜状とするものであれば本発明の範囲内である。ま
た、本実施形態では、縦断面視台形状をもってシール体
１７を説明したが、この形状に何等限定解釈されるもの
ではなく、挿入方向に対して傾斜状のテーパ面２４ａを
外面側に有するものであればよい。すなわち、外面側を
テーパ面２４ａとすると共に、内面側を垂直面２４ｂと
した縦断面視三角形状とするものであってもよい。ま
た、上記実施形態では内面側を垂直面２４ｂとするもの
で説明したが、挿入方向に傾斜状の内面側テーパ面とす
ることも本発明の範囲内である。この場合においてシー
ルホルダ部９ａ側の係合部１２も同様に傾斜状のテーパ
面を有するものとし、例えば上記弾性突部２４の形状と
同様の縦断面視三角形状としたり、また係合部１２の上
記内面側テーパ面と同一傾斜状の内面側テーパ面とする
か、若しくは内面側垂直面とする。The inclined state and the width of the tapered surface 24a are not particularly limited, and are within the scope of the present invention as long as they are inclined in the insertion direction. Further, in the present embodiment, the seal body 17 has been described as having a trapezoidal shape in a vertical cross section. However, the seal body 17 is not limited to this shape, and has a tapered surface 24a inclined on the outer surface side with respect to the insertion direction. Should be fine. That is, the outer surface side may be a tapered surface 24a and the inner surface side may be a vertical cross-sectionally triangular shape having a vertical surface 24b. In the above embodiment, the inner surface is described as the vertical surface 24b. However, it is also within the scope of the present invention to use an inner surface tapered surface inclined in the insertion direction. In this case, the engaging portion 12 on the side of the seal holder portion 9a also has an inclined tapered surface, for example, a triangular shape in a vertical cross section similar to the shape of the elastic projection 24, or The inner surface side tapered surface may be the same as the above-mentioned inner surface side tapered surface, or the inner surface side vertical surface.
【００４２】図６は、第三実施形態の密封装置部分を拡
大して示す縦断面図、図７は、図６の密封装置部分にお
けるシール体をシールホルダ部に嵌め込む状態を示す縦
断面図である。本実施形態では、シールホルダ部９ａに
設けられる係合部１２を、円筒内周面１１における外側
端部を周方向に所望軸方向幅・半径方向幅で切り欠いた
連続周溝とし、一方シール体１７の嵌合部２１に設けら
れる弾性突部２４は、嵌合部２１の外側端部に、上記係
合部１２を構成する周溝に嵌合可能な若干の突部を周方
向に連続的に設けるものとする。弾性部材（突部）２４
は、シール体１７を弾性変形させつつシールホルダ部９
ａ内に挿入し、該突部２４がシールホルダ部９ａの係合
部位置に達した時にその押圧力から解放されて、係合部
１２内に入ると共に、該係合部１２の内面側垂直面１２
ｂに突部２４の垂直面２４ｂが密接してシール体１７が
シールホルダ部９ａに組み込まれるため、シールホルダ
９の幅が小さくなる制約が生じても、シール体１７の抜
け止性能が向上する（図７中の矢印は挿入方向を示
す。）。FIG. 6 is an enlarged longitudinal sectional view showing a sealing device part of the third embodiment, and FIG. 7 is a longitudinal sectional view showing a state in which a seal body in the sealing device part of FIG. 6 is fitted into a seal holder portion. It is. In the present embodiment, the engaging portion 12 provided in the seal holder portion 9a is a continuous circumferential groove in which the outer end portion of the cylindrical inner peripheral surface 11 is circumferentially cut at a desired axial width and a radial width. The elastic protrusion 24 provided on the fitting portion 21 of the body 17 has a small protrusion protruding from the outer end of the fitting portion 21 in the circumferential direction so as to fit into the circumferential groove forming the engaging portion 12. It is assumed that it is provided. Elastic member (projection) 24
The seal holder part 9 is elastically deformed while the seal body 17 is deformed.
a, when the projection 24 reaches the position of the engaging portion of the seal holder portion 9a, it is released from the pressing force and enters the engaging portion 12 and the inner surface of the engaging portion 12 Face 12
Since the vertical surface 24b of the protrusion 24 is in close contact with the seal member 17b and the seal member 17 is incorporated into the seal holder portion 9a, even if there is a restriction that the width of the seal holder 9 is reduced, the performance of preventing the seal member 17 from coming off is improved. (The arrow in FIG. 7 indicates the insertion direction.)
【００４３】また、本実施形態にあってもシール体１７
の弾性突部２４が挿入方向に対して傾斜状のテーパ面２
４ａをもって形成されているため、挿入性が向上する。
シール体１７は、その内面側に半径方向に延びる垂直面
２４ｂを設けると共に、シールホルダ部９ａの係合部１
２には上記垂直面２４ｂに密接可能な内面側垂直面１２
ｂを設けているため、上述の通り挿入性を向上しつつ
も、抜け難い構成となっている。上記弾性突部２４の突
出形状・高さにあっては特に限定されるものではなく、
係合部１２に係止可能な凸状態とするものであれば本発
明の範囲内である。なお、その他の構成および作用効果
は前記第一実施形態と同一であるため、同一箇所に同一
符号を付してその説明を省略する。Also in this embodiment, the sealing member 17
Elastic projections 24 are inclined with respect to the insertion direction.
4a, the insertability is improved.
The seal body 17 has a vertical surface 24b extending in the radial direction on the inner surface side, and the engaging portion 1 of the seal holder portion 9a.
2 includes an inner vertical surface 12 which can be in close contact with the vertical surface 24b.
Since b is provided, the structure is hard to come out while improving the insertability as described above. The projecting shape and height of the elastic projection 24 are not particularly limited.
It is within the scope of the present invention as long as it is in a convex state that can be locked to the engaging portion 12. Since the other configuration and operation and effect are the same as those of the first embodiment, the same portions are denoted by the same reference numerals and description thereof will be omitted.
【００４４】図８は、第四実施形態の密封装置部分を拡
大して示す縦断面図、図９は、図８の密封装置部分にお
けるシール体をシールホルダ部に嵌め込む状態を示す縦
断面図である。本実施形態では、シールホルダ部９ａに
設けられる係合部１２を、円筒内周面１１における軸方
向略中央部付近を周方向に連続する周溝としているが、
一方のシール体１７の嵌合部２１には意図的に前記実施
形態のような弾性突部２４は設けていないものとする。
すなわち、シール体１７を弾性変形させつつシールホル
ダ部９ａ内に挿入（圧入）すると、嵌合部２１の弾性材
１７ｂ′はシールホルダ部９ａの係合部（溝）１２内
で、その弾性によりわずかな凸部３０を形成することと
なる。該凸部３０と係合部１２とにより凹凸嵌め合わせ
部２５を形成し、シール体１７がシールホルダ部９ａに
組み込まれるため、シールホルダ９の幅が小さくなる制
約が生じても、シール体１７の抜け止性能が向上する
（図９中の矢印は挿入方向を示す。）。本実施形態にあ
っては、シール体１７の嵌合部２１に意図的に突部を形
成しているものでないため、挿入性が向上する。FIG. 8 is an enlarged longitudinal sectional view showing a sealing device part of the fourth embodiment, and FIG. 9 is a longitudinal sectional view showing a state in which a seal body in the sealing device part of FIG. 8 is fitted into a seal holder. It is. In the present embodiment, the engaging portion 12 provided in the seal holder portion 9a is formed as a circumferential groove that is continuous in the circumferential direction near the substantially central portion in the axial direction of the cylindrical inner circumferential surface 11,
It is assumed that the elastic projection 24 as in the above-described embodiment is not intentionally provided in the fitting portion 21 of one seal body 17.
That is, when the sealing member 17 is inserted (press-fitted) into the seal holder portion 9a while being elastically deformed, the elastic material 17b 'of the fitting portion 21 is elastically deformed in the engaging portion (groove) 12 of the seal holder portion 9a. A slight projection 30 is formed. The projections 30 and the engaging portions 12 form the concave-convex fitting portion 25, and the seal body 17 is incorporated into the seal holder 9a. (The arrow in FIG. 9 indicates the insertion direction). In the present embodiment, since the protrusion is not intentionally formed in the fitting portion 21 of the seal body 17, the insertability is improved.
【００４５】係合部１２の周溝は、特に限定されるもの
ではなく、所望幅（軸方向幅）・所望深さ（径方向深
さ）をもって形成され、またその溝形状も図示せるよう
に縦断面視矩形状に限られず、シール体１７の嵌合部２
１における弾性材１７ｂ′が、その弾性により嵌入可能
なものであればよく任意である。また、係合部１２を周
方向に断続的な溝とすることも可能であり、それぞれの
係合部１２の断面形状および周方向長さ・軸方向幅・径
方向深さなどは特に限定されず、シール体１７の嵌合部
２１における弾性材１７ｂ′が、その弾性により嵌入可
能なものであればよく任意である。係合部１２の位置
は、本実施形態では円筒内周面１１の軸方向中央部付近
としているが、特に図示位置に限定解釈されるものでは
なく、円筒内周面１１の軸方向範囲内において適宜設定
・変更可能である。The circumferential groove of the engaging portion 12 is not particularly limited, and is formed with a desired width (axial width) and a desired depth (radial depth). The fitting portion 2 of the seal body 17 is not limited to a rectangular shape in a vertical cross section.
The elastic member 17b 'in FIG. 1 is arbitrary as long as it can be fitted by its elasticity. It is also possible to form the engaging portions 12 as grooves intermittent in the circumferential direction, and the cross-sectional shape, circumferential length, axial width, radial depth, and the like of each engaging portion 12 are particularly limited. Instead, the elastic member 17b 'in the fitting portion 21 of the seal body 17 is not limited as long as it can be fitted by its elasticity. In the present embodiment, the position of the engaging portion 12 is near the axial center of the cylindrical inner peripheral surface 11. However, the position is not particularly limited to the illustrated position. It can be set and changed as appropriate.
【００４６】本実施形態の係合部１２は、軸方向に単数
形成しているが、この係合部１２を軸方向に複数形成す
ることも、また係合部１２の軸方向幅も任意で、円筒内
周面１１の軸方向一杯に係合部１２を形成することも本
発明の範囲内である。また、係合部１２は、円筒内周面
１１における外側端部を周方向に切り欠いた連続若しく
は断続の溝としてもよい。さらに、このように円筒内周
面１１における外側端部にて設けた係合部１２と、円筒
内周面１１の軸方向中央部付近に設けた係合部１２とを
双方備えた構造としてもよい。なお、その他の構成およ
び作用効果は前記第一実施形態と同一であるため、同一
箇所に同一符号を付してその説明を省略する。In the present embodiment, a single engaging portion 12 is formed in the axial direction. However, a plurality of the engaging portions 12 may be formed in the axial direction, and the axial width of the engaging portion 12 may be arbitrarily set. It is also within the scope of the present invention to form the engaging portion 12 so as to cover the entire cylindrical inner peripheral surface 11 in the axial direction. Further, the engaging portion 12 may be a continuous or intermittent groove in which the outer end of the cylindrical inner peripheral surface 11 is cut out in the circumferential direction. Further, a structure having both the engaging portion 12 provided at the outer end portion of the cylindrical inner peripheral surface 11 and the engaging portion 12 provided near the axial center of the cylindrical inner peripheral surface 11 may be adopted. Good. Since the other configuration and operation and effect are the same as those of the first embodiment, the same portions are denoted by the same reference numerals and description thereof will be omitted.
【００４７】図１０は、第五実施形態の密封装置部分を
拡大して示す縦断面図、図１１は、図１０の密封装置部
分におけるシール体をシールホルダ部に嵌め込む状態を
示す縦断面図である。本実施形態では、シールホルダ部
９ａには、円筒内周面１１における軸方向略中央位置で
周方向に突設した連続凸条の係合部１２′とし、一方の
シール体１７には、前記凸条の係合部１２′が嵌合可能
な連続凹溝３１を、嵌合部２１の軸方向略中央位置で周
方向にわたって連続して設ける構成とする。すなわち本
実施形態では、シール体１７を弾性変形させつつシール
ホルダ部９ａ内に挿入し、嵌合部２１の連続凹溝３１が
シールホルダ部９ａの凸条の係合部１２′位置に達した
時に、係合部１２′が凹溝３１内に入って凹凸嵌め合わ
せ部２５を形成する。このようにしてシール体１７がシ
ールホルダ部９ａに組み込まれるため、シールホルダ９
の幅が小さくなる制約が生じても、シール体１７の抜け
止性能が向上する（図１１中の矢印は挿入方向を示
す。）。係合部１２′の位置は、本実施形態では円筒内
周面１１の軸方向中央部付近としているが、特に図示位
置に限定解釈されるものではなく、円筒内周面１１の軸
方向範囲内において適宜設定・変更可能である。凹溝
（若しくは溝）３１の位置も係合部１２′に合わせて適
宜設定・変更可能である。FIG. 10 is an enlarged longitudinal sectional view showing a sealing device part of the fifth embodiment, and FIG. 11 is a longitudinal sectional view showing a state in which a seal body in the sealing device part of FIG. 10 is fitted into a seal holder. It is. In the present embodiment, the seal holder portion 9a is a continuous convex engagement portion 12 'projecting in the circumferential direction at a substantially central position in the axial direction on the inner circumferential surface 11 of the cylinder. The continuous concave groove 31 into which the engaging portion 12 ′ of the ridge can be fitted is provided continuously in the circumferential direction at a substantially central position in the axial direction of the fitting portion 21. That is, in the present embodiment, the seal body 17 is inserted into the seal holder portion 9a while being elastically deformed, and the continuous concave groove 31 of the fitting portion 21 reaches the position of the projection engaging portion 12 'of the seal holder portion 9a. Occasionally, the engaging portion 12 ′ enters the concave groove 31 to form the concave / convex fitting portion 25. Since the seal body 17 is incorporated into the seal holder 9a in this manner, the seal holder 9
Even if there is a restriction that the width of the seal member 17 becomes small, the performance of preventing the seal body 17 from coming off is improved (the arrow in FIG. 11 indicates the insertion direction). In this embodiment, the position of the engaging portion 12 ′ is near the axial center of the cylindrical inner peripheral surface 11, but is not particularly limited to the illustrated position. Can be set and changed as appropriate. The position of the concave groove (or groove) 31 can also be appropriately set and changed in accordance with the engagement portion 12 '.
【００４８】また、図１２および図１３は、本実施形態
における係合部１２′と凹溝（若しくは溝）３１の他の
形態を示す部分拡大図である。図１２は、シールホルダ
部９ａの凸条の係合部１２′を、円筒内周面１１におい
て内側端寄りに設け、一方シール体１７の凹溝３１を、
嵌合部２１において、該嵌合部２１と円錐面１９との境
界付近に設けている。図１３は、シールホルダ部９ａの
凸条の係合部１２′を、円筒内周面１１において外側端
寄りに設け、一方シール体１７の凹溝３１を、嵌合部２
１において、該嵌合部２１と平坦面２２との境界付近に
設けている。図１２・図１３に示す形態における夫々の
作用効果、およびその他の構成・作用効果については第
五実施形態と同一であり、同一箇所に同一符号を付して
その説明は省略する。FIGS. 12 and 13 are partially enlarged views showing other forms of the engaging portion 12 'and the concave groove (or groove) 31 in this embodiment. FIG. 12 shows that the convex engaging portion 12 ′ of the seal holder portion 9 a is provided near the inner end on the cylindrical inner peripheral surface 11, while the concave groove 31 of the seal body 17 is formed.
The fitting portion 21 is provided near a boundary between the fitting portion 21 and the conical surface 19. FIG. 13 shows that the convex engaging portion 12 ′ of the seal holder portion 9 a is provided near the outer end on the cylindrical inner peripheral surface 11, while the concave groove 31 of the seal body 17 is
1, it is provided near a boundary between the fitting portion 21 and the flat surface 22. The respective operational effects and other configurations and operational effects in the embodiment shown in FIGS. 12 and 13 are the same as those in the fifth embodiment, and the same portions are denoted by the same reference numerals and description thereof will be omitted.
【００４９】図１０乃至図１３にて示した本実施形態に
おける係合部１２′は、特に図示例に限定されるもので
はなく、所望幅（軸方向幅）・所望高さ（径方向高さ）
をもって形成され、またその凸形状も図示せるように縦
断面視矩形状に限られず任意である。シール体１７の凹
溝３１は、特に限定されるものではなく、所望幅（軸方
向幅）・所望深さ（径方向深さ）をもって形成され、ま
たその溝形状も図示せるように縦断面視矩形状に限られ
ず、前記係合部１２′が嵌合可能な溝形状であれば任意
である。例えば、前記第二実施形態の凹凸嵌め合わせ部
２５と同様の構成とすることも可能である。すなわち、
係合部１２′は、その内側面（シール体組み込み方向の
前面側）にテーパ面をもつ縦断面視略台形状とし、一方
シール体１７の凹溝３１は、係合部１２′形状に応じ、
テーパ面に密接する内側（円錐面１９寄りの内面）テー
パ面をもつ縦断面視略台形状とすることも本発明の範囲
内で可能である。本実施形態の係合部１２′は、軸方向
に単数形成しているが、この係合部１２′を軸方向に複
数形成することも、また係合部１２′の軸方向幅も任意
で、円筒内周面１１の軸方向一杯に係合部１２′を形成
することも本発明の範囲内である。凹溝３１も係合部１
２′に合わせて適宜設定・変更可能である。また、係合
部１２′および凹溝は、夫々周方向に断続的な係合部お
よび凹溝とすることも可能であり、それぞれの係合部お
よび凹溝の断面形状および周方向長さ・軸方向幅・径方
向高さ（深さ）などは特に限定されず任意である。な
お、その他の構成および作用効果は前記第一実施形態と
同一であるため、同一箇所に同一符号を付してその説明
を省略する。The engaging portion 12 'in this embodiment shown in FIGS. 10 to 13 is not particularly limited to the illustrated example, but has a desired width (axial width) and a desired height (radial height). )
The convex shape is not limited to a rectangular shape in a vertical cross section as shown in the figure, but is arbitrary. The concave groove 31 of the seal body 17 is not particularly limited, and is formed with a desired width (axial width) and a desired depth (radial depth). The shape is not limited to a rectangular shape, and may be any shape as long as the engaging portion 12 'can be fitted into a groove. For example, a configuration similar to that of the concave-convex fitting section 25 of the second embodiment can be adopted. That is,
The engaging portion 12 ′ has a substantially trapezoidal shape in a longitudinal section having a tapered surface on the inner side surface (the front surface side in the direction of assembling the seal body). ,
It is also possible within the scope of the present invention to have a substantially trapezoidal shape in a longitudinal section having a tapered surface on the inner side (the inner surface near the conical surface 19) closely contacting the tapered surface. Although the engaging portion 12 'of this embodiment is formed singly in the axial direction, a plurality of the engaging portions 12' may be formed in the axial direction, and the axial width of the engaging portion 12 'may be arbitrarily set. It is also within the scope of the present invention to form the engaging portion 12 'so as to cover the entire cylindrical inner peripheral surface 11 in the axial direction. The concave groove 31 is also the engaging portion 1
It can be appropriately set and changed in accordance with 2 '. Also, the engaging portion 12 'and the concave groove can be an intermittent engaging portion and a concave groove, respectively, in the circumferential direction. The axial width, radial height (depth), and the like are not particularly limited and are arbitrary. Since the other configuration and operation and effect are the same as those of the first embodiment, the same portions are denoted by the same reference numerals and description thereof will be omitted.
【００５０】[0050]
【発明の効果】本発明転がり軸受の密封装置は、上記の
ような構成としたため、シール体と保持器が干渉しない
条件を満足しながら、高負荷容量を為し得るという特徴
を失うこと無く、通常の軸受に用いていた吊り治具を共
通に使用することが出来るものであって、かつシール体
の嵌合力を向上し得た転がり軸受の密封装置を提供でき
た。The sealing device for a rolling bearing according to the present invention is constructed as described above, so that a high load capacity can be achieved without losing the feature of satisfying the condition that the seal body and the retainer do not interfere with each other. It is possible to provide a sealing device for a rolling bearing in which a suspending jig used for a normal bearing can be commonly used, and the fitting force of a seal body can be improved.
【図１】本発明転がり軸受の密封装置を、４列円錐ころ
軸受に装着した状態の一実施形態を示す縦断面図。FIG. 1 is a longitudinal sectional view showing an embodiment in which a sealing device for a rolling bearing of the present invention is mounted on a four-row tapered roller bearing.
【図２】密封装置部分を拡大して示す第一実施形態の縦
断面図。FIG. 2 is a longitudinal sectional view of the first embodiment showing a sealing device portion in an enlarged manner.
【図３】シール体をシールホルダに嵌め込む状態を示す
縦断面図。FIG. 3 is a longitudinal sectional view showing a state where a seal body is fitted into a seal holder.
【図４】第二実施形態の密封装置部分を拡大して示す縦
断面図。FIG. 4 is an enlarged longitudinal sectional view showing a sealing device part of a second embodiment.
【図５】第二実施形態においてシール体をシールホルダ
部に嵌め込む状態を示す縦断面図。FIG. 5 is a longitudinal sectional view showing a state in which a seal body is fitted into a seal holder in the second embodiment.
【図６】第三実施形態の密封装置部分を拡大して示す縦
断面図。FIG. 6 is an enlarged longitudinal sectional view showing a sealing device part of a third embodiment.
【図７】第三実施形態においてシール体をシールホルダ
部に嵌め込む状態を示す縦断面図。FIG. 7 is a longitudinal sectional view showing a state in which a seal body is fitted into a seal holder in the third embodiment.
【図８】第四実施形態の密封装置部分を拡大して示す縦
断面図。FIG. 8 is an enlarged longitudinal sectional view showing a sealing device part of a fourth embodiment.
【図９】第四実施形態においてシール体をシールホルダ
部に嵌め込む状態を示す縦断面図。FIG. 9 is a longitudinal sectional view showing a state where a seal body is fitted into a seal holder in the fourth embodiment.
【図１０】第五実施形態の密封装置部分を拡大して示す
縦断面図。FIG. 10 is an enlarged longitudinal sectional view showing a sealing device part of a fifth embodiment.
【図１１】第五実施形態においてシール体をシールホル
ダ部に嵌め込む状態を示す縦断面図。FIG. 11 is a longitudinal sectional view showing a state in which a seal body is fitted into a seal holder in the fifth embodiment.
【図１２】第五実施形態における係合部と周溝の他の形
態を示す部分拡大図。FIG. 12 is a partially enlarged view showing another form of the engaging portion and the circumferential groove in the fifth embodiment.
【図１３】第五実施形態における係合部と周溝の他の形
態を示す部分拡大図。FIG. 13 is a partially enlarged view showing another form of the engaging portion and the circumferential groove in the fifth embodiment.
【図１４】４列円錐ころ軸受用吊具を使用した状態を参
考として示す縦断面図。FIG. 14 is a longitudinal sectional view showing, as a reference, a state in which a four-row tapered roller bearing hanger is used.
【図１５】従来の密封転がり軸受の縦断面図。FIG. 15 is a longitudinal sectional view of a conventional sealed rolling bearing.
【図１６】従来の密封転がり軸受の縦断面図。FIG. 16 is a longitudinal sectional view of a conventional sealed rolling bearing.
１：軸受部 ２：外輪 ４：内輪 ６：円錐ころ ７：保持器 ８：密封装置 ９：シールホルダ ９ａ：シールホルダ部 １０：円錐面 １１：円筒内周面 １２，１２′：係合部 １２ａ：外面側テーパ面 １２ｂ：内面側垂直面 １７：シール体 １７ｂ：弾性材 １９：円錐面 ２０：矩形部 ２１：嵌合部 ２４：弾性突部 ２４ａ：テーパ面 ２４ｂ：垂直面 ２５：凹凸嵌め合わせ部 ２７：保持器潜り込み空間 ８００：吊り治具 1: Bearing portion 2: Outer ring 4: Inner ring 6: Tapered roller 7: Cage 8: Sealing device 9: Seal holder 9a: Seal holder portion 10: Conical surface 11: Inner peripheral surface of cylinder 12, 12 ': Engaging portion 12a : Outer side tapered surface 12b: Inner side vertical surface 17: Seal body 17b: Elastic material 19: Conical surface 20: Rectangular portion 21: Fitting portion 24: Elastic projection 24a: Tapered surface 24b: Vertical surface 25: Asperity fitting Part 27: Cave submerging space 800: Hanging jig
Claims (1)
動自在に設けられた複数個の転動体と、転動体を保持す
る保持器と、外輪と内輪との間を密封する密封装置とを
有する密封転がり軸受装置において、密封装置は、外輪
に直接形成あるいは外輪に密接される別体のシールホル
ダに形成されたシールホルダ部と、シールホルダ部に取
付けられるシール体とからなり、シール体との干渉を避
けるようにしてシールホルダ部のシール空間に保持器一
端部を潜り込ませ、シールホルダ部に設けた係合部にシ
ール体を係合したことを特徴とする密封転がり軸受装
置。1. An outer ring, an inner ring, a plurality of rolling elements rotatably provided between the outer ring and the inner ring, a retainer for holding the rolling elements, and a seal between the outer ring and the inner ring. In a sealed rolling bearing device having a sealing device, the sealing device includes a seal holder portion formed directly on the outer ring or formed on a separate seal holder that is closely attached to the outer ring, and a seal member attached to the seal holder portion. A seal rolling bearing characterized in that one end of the retainer is sunk into the seal space of the seal holder so as to avoid interference with the seal, and the seal is engaged with an engaging portion provided in the seal holder. apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000206726A JP2002021861A (en) | 2000-07-07 | 2000-07-07 | Sealed rolling bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000206726A JP2002021861A (en) | 2000-07-07 | 2000-07-07 | Sealed rolling bearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002021861A true JP2002021861A (en) | 2002-01-23 |
Family
ID=18703607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000206726A Withdrawn JP2002021861A (en) | 2000-07-07 | 2000-07-07 | Sealed rolling bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002021861A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009228759A (en) * | 2008-03-21 | 2009-10-08 | Jtekt Corp | Sealing device and rolling bearing device |
| JP2013145028A (en) * | 2012-01-16 | 2013-07-25 | Nsk Ltd | Sealing type roll bearing |
| JP2015222096A (en) * | 2014-05-22 | 2015-12-10 | 日本精工株式会社 | Bearing for idler pulley |
-
2000
- 2000-07-07 JP JP2000206726A patent/JP2002021861A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009228759A (en) * | 2008-03-21 | 2009-10-08 | Jtekt Corp | Sealing device and rolling bearing device |
| JP2013145028A (en) * | 2012-01-16 | 2013-07-25 | Nsk Ltd | Sealing type roll 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20070705 |
|
| A761 | Written withdrawal of application |
Effective date: 20080610 Free format text: JAPANESE INTERMEDIATE CODE: A761 |