JP2589032Y2 - Bearing sealing device - Google Patents
Bearing sealing deviceInfo
- Publication number
- JP2589032Y2 JP2589032Y2 JP1992073392U JP7339292U JP2589032Y2 JP 2589032 Y2 JP2589032 Y2 JP 2589032Y2 JP 1992073392 U JP1992073392 U JP 1992073392U JP 7339292 U JP7339292 U JP 7339292U JP 2589032 Y2 JP2589032 Y2 JP 2589032Y2
- Authority
- JP
- Japan
- Prior art keywords
- sealing device
- contact
- rubber portion
- seal groove
- grease
- 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.)
- Expired - Lifetime
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
- F16C33/7846—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 a gap between the annular disc and 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
- F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
- F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
- F16C33/7853—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with one or more sealing lips to contact the inner race
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本考案は、軸受の密封装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing sealing device.
【０００２】[0002]
【従来の技術】密封型の転がり軸受は、側面に密封装置
を取り付けたもので、内部にはグリースが封入される。
この密封装置の従来例を図４に示す。2. Description of the Related Art A sealing type rolling bearing has a sealing device attached to a side surface, and is filled with grease.
FIG. 4 shows a conventional example of this sealing device.
【０００３】図４において、１は内輪、２は外輪、３は
転動体としての玉、４は保持器、５は密封装置である。
密封装置５は、環状の芯金６と、この芯金６に被着され
たゴム部７とからなるもので、その外径縁が外輪２の段
部２ａに嵌着され、ゴム部７の内径縁が内輪１のシール
溝１ａと接触もしくは非接触によりシールするようにな
っている。In FIG. 4, 1 is an inner ring, 2 is an outer ring, 3 is a ball as a rolling element, 4 is a retainer, and 5 is a sealing device.
The sealing device 5 includes an annular core 6 and a rubber portion 7 attached to the core 6, and the outer diameter edge of the sealing device 5 is fitted to the step 2 a of the outer ring 2. The inner peripheral edge is sealed by contact or non-contact with the seal groove 1 a of the inner ring 1.
【０００４】この図示例では、ゴム部７に、シール溝１
ａの角部に近接対向してその間にラビリンスを形成する
外径側のラビリンス形成部分７ａと、これよりも内径側
でシール溝１ａ側面に接触するリップ７ｂと、このリッ
プ７ｂよりも内径側でシール溝１ａ底部に近接対向して
その間にラビリンスを形成する内径側のラビリンス形成
部分７ｃとが設けられている。In the illustrated example, a rubber groove 7 is provided with a seal groove 1.
a labyrinth forming portion 7a on the outer diameter side, which forms a labyrinth in close proximity to the corner of a, a lip 7b which is in contact with the inner side of the seal groove 1a, and a lip 7b which is in contact with the side surface of the seal groove 1a A labyrinth forming portion 7c on the inner diameter side, which forms a labyrinth in close proximity to the bottom of the seal groove 1a, is provided therebetween.
【０００５】[0005]
【考案が解決しようとする課題】ところで、上記のよう
な密封装置の内側面には、常時、封入グリースが接して
いるので、ゴム部７がこのグリースの油分の影響を受け
て膨潤し、これにより、ゴム部７の各部分のうち、ラビ
リンスを形成している部分７ａが内輪１に接触するよう
になったり、リップ７ｂの内輪１に対する接触圧が大き
くなったりして、摩擦抵抗が増大し、甚だしい場合には
ゴム部７の先端が切損することがある。Since the sealed grease is always in contact with the inner surface of the above-described sealing device, the rubber portion 7 swells due to the oil content of the grease. As a result, the labyrinth-forming portion 7a of each portion of the rubber portion 7 comes into contact with the inner ring 1, or the contact pressure of the lip 7b against the inner ring 1 increases, thereby increasing the frictional resistance. In extreme cases, the tip of the rubber portion 7 may be cut off.
【０００６】本考案は、このような問題に鑑み、ゴム部
がグリースの影響を受けないようにして、ゴム部の膨潤
による摩擦抵抗の増大や切損を未然に防ぐことを課題と
している。SUMMARY OF THE INVENTION In view of such a problem, an object of the present invention is to prevent the rubber portion from being affected by grease, and to prevent an increase in frictional resistance and cutout due to swelling of the rubber portion.
【０００７】[0007]
【課題を解決するための手段】本考案は、環状の芯金
と、この芯金に被着されたゴム部とからなる軸受の密封
装置において、ゴム部の表面のうち、グリースと接する
部位全面に耐油性被膜が設けられている構成とした。A solution for the present invention includes a ring-shaped core metal, the sealing device of the bearing consisting of deposited rubber portion to the core metal of the surface of the rubber part, portion contacting with grease An oil-resistant coating is provided on the entire surface .
【０００８】[0008]
【作用】上記の構成において、耐油性被膜によりグリー
スとゴム部との接触が遮断され、ゴム部は膨潤しなくな
る。したがって、ゴム部は、本来非接触の個所で内輪と
接触したり、リップの接触圧が増大したりすることがな
い。In the above construction, the oil-resistant coating blocks the contact between the grease and the rubber portion, and the rubber portion does not swell. Therefore, the rubber portion does not come into contact with the inner ring at a point where the rubber portion is not originally in contact, and the contact pressure of the lip does not increase.
【０００９】[0009]
【実施例】以下、本考案の詳細を図１ないし図３に示す
各実施例に基づいて説明する。まず、図１および図２は
本考案の一実施例に係り、図１は密封装置の断面図、図
２はその要部の拡大断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to each embodiment shown in FIGS. 1 and 2 relate to an embodiment of the present invention. FIG. 1 is a sectional view of a sealing device, and FIG. 2 is an enlarged sectional view of a main part thereof.
【００１０】図１において、１は内輪、２は外輪、３は
転動体としての玉、４は保持器、５は密封装置で、この
密封装置５が、環状の芯金６と、この芯金６に被着され
たゴム部７とからなり、その外径縁が外輪２の段部２ａ
に嵌着されるものである点は、前記した従来の密封装置
と同じである。また、ゴム部７の内径縁が内輪１のシー
ル溝１ａと接触および非接触によりシールするもので、
ゴム部７には、シール溝１ａの角部に近接対向してその
間にラビリンスを形成する外径側のラビリンス形成部分
７ａと、これよりも内径側でシール溝１ａ側面に接触す
るリップ７ｂと、このリップ７ｂよりも内径側でシール
溝１ａ底部に近接対向してその間にラビリンスを形成す
る内径側のラビリンス形成部分７ｃとが設けられている
点も、従来の密封装置と同じである。In FIG. 1, 1 is an inner ring, 2 is an outer ring, 3 is a ball as a rolling element, 4 is a retainer, 5 is a sealing device, and the sealing device 5 is an annular core 6 and an annular core 6. And a stepped portion 2a of the outer race 2 having an outer diameter edge.
Is the same as the above-mentioned conventional sealing device. Further, the inner peripheral edge of the rubber portion 7 seals with the seal groove 1a of the inner ring 1 by contact and non-contact.
The rubber portion 7 has a labyrinth forming portion 7a on the outer diameter side which is close to the corner of the seal groove 1a and forms a labyrinth therebetween, a lip 7b which is in contact with the side surface of the seal groove 1a on the inner diameter side, It is also the same as the conventional sealing device in that a labyrinth forming portion 7c on the inner diameter side which forms a labyrinth is provided between the lip 7b on the inner diameter side and close to the bottom of the seal groove 1a.
【００１１】この実施例の密封装置が従来例と異なる点
は、ゴム部７の表面のうち、グリースと接する部位に、
例えばフッ素系樹脂のコーティングにより耐油性被膜８
が設けられていることである。具体的には、図２に明示
するように、耐油性被膜８は、ゴム部７の軸受内側面
で、芯金６の露出部に接する境界部分から、シール溝１
ａの角部に近接対向する外径側のラビリンス形成部分７
ａ、リップ７ｂの付け根部分にかけて連続して設けられ
ている。リップ７ｂの先端部分と、それよりも内径側の
ラビリンス形成部分７ｃとは、グリースにほとんど接す
ることがないので、これらの部分の表面には耐油性被膜
８が設けられない。The difference between the sealing device of this embodiment and the conventional device is that a portion of the surface of the rubber portion 7 which is in contact with the grease is
For example, an oil-resistant film 8 made of a fluororesin coating
Is provided. Specifically, as clearly shown in FIG. 2, the oil-resistant coating 8 is formed on the inner surface of the bearing of the rubber portion 7 from the boundary portion in contact with the exposed portion of the cored bar 6, from the seal groove 1.
labyrinth forming portion 7 on the outer diameter side which is closely opposed to the corner of a
a, it is provided continuously over the base of the lip 7b. Since the tip portion of the lip 7b and the labyrinth forming portion 7c on the inner diameter side therefrom hardly come into contact with the grease, the oil-resistant coating 8 is not provided on the surface of these portions.
【００１２】上記構成の密封装置においては、耐油性被
膜８がグリースとゴム部７との接触を遮断するから、グ
リースによりゴム部７が膨潤することがなく、したがっ
て、膨潤により外径側のラビリンス形成部分７ａがシー
ル溝１ａの角部に接触したり、リップ７ｂのシール溝１
ａ側面に対する接触圧が増大したりするようなことがな
い。In the sealing device having the above structure, the oil-resistant coating 8 blocks the contact between the grease and the rubber portion 7, so that the rubber portion 7 does not swell due to the grease. The formed portion 7a comes into contact with the corner of the seal groove 1a, or the seal groove 1 of the lip 7b
There is no increase in the contact pressure on the a side surface.
【００１３】図１では、リップを有する接触型の密封装
置の実施例を示したが、図３に示すように、本考案は非
接触型の密封装置にも実施しうる。図３は、本考案を実
施した非接触型密封装置の要部の断面図である。Although FIG. 1 shows an embodiment of a contact type sealing device having a lip, as shown in FIG. 3, the present invention can be applied to a non-contact type sealing device. FIG. 3 is a sectional view of a main part of the non-contact type sealing device embodying the present invention.
【００１４】この例では、ゴム部７の内径縁には、内輪
１のシール溝１ａの角部と、側面と、底部とにそれぞれ
近接対向してその間にラビリンスを形成するラビリンス
形成部分７ｄ，７ｅ，７ｆがあり、これらラビリンス形
成部分７ｄ，７ｅ，７ｆに連続して耐油性被膜８が設け
られている。その他、図１の実施例の各部と同一の部分
には同一の符号を付している。In this example, labyrinth forming portions 7d and 7e are formed on the inner peripheral edge of the rubber portion 7 so as to be opposed to the corner portion, the side surface, and the bottom portion of the seal groove 1a of the inner ring 1 so as to form a labyrinth therebetween. , 7f, and an oil-resistant coating 8 is provided continuously to the labyrinth forming portions 7d, 7e, 7f. In addition, the same components as those of the embodiment of FIG. 1 are denoted by the same reference numerals.
【００１５】図３の実施例の密封装置５においても、耐
油性被膜８がグリースとゴム部７との接触を遮断するか
ら、グリースによりゴム部７が膨潤して、各ラビリンス
形成部分７ｄ，７ｅ，７ｆがシール溝１ａに接触するよ
うなことがない。Also in the sealing device 5 of the embodiment shown in FIG. 3 , since the oil-resistant coating 8 blocks the contact between the grease and the rubber portion 7, the rubber portion 7 swells due to the grease and the labyrinth forming portions 7d and 7e. , 7f do not contact the seal groove 1a.
【００１６】[0016]
【考案の効果】以上述べたように、本考案によれば、密
封装置のゴム部に対するグリースの影響をなくし、ゴム
部の膨潤による摩擦抵抗の増大や切損を未然に防止する
ことができる。As described above, according to the present invention, it is possible to eliminate the influence of grease on the rubber portion of the sealing device and to prevent an increase in frictional resistance due to the swelling of the rubber portion and a breakage.
【図１】本考案の一実施例に係る密封装置の断面図。FIG. 1 is a sectional view of a sealing device according to an embodiment of the present invention.
【図２】上記実施例の要部の拡大断面図。FIG. 2 is an enlarged sectional view of a main part of the embodiment.
【図３】本考案の他の実施例に係る密封装置の要部の断
面図。FIG. 3 is a sectional view of a main part of a sealing device according to another embodiment of the present invention.
【図４】従来の密封装置の断面図。FIG. 4 is a sectional view of a conventional sealing device.
１ 内輪 １ａ シール溝 ２ 外輪 ５ 密封装置 ６ 芯金 ７ ゴム部 ８ 耐油性被膜 DESCRIPTION OF SYMBOLS 1 Inner ring 1a Seal groove 2 Outer ring 5 Sealing device 6 Core metal 7 Rubber part 8 Oil resistant coating
Claims (2)
ム部とからなる軸受の密封装置において、 ゴム部の表面のうち、グリースと接する部位全面に耐油
性被膜が設けられている、ことを特徴とする軸受の密封
装置。1. A sealing device for a bearing comprising an annular core and a rubber portion attached to the core, wherein an oil-resistant coating is provided on the entire surface of the rubber portion in contact with the grease. A sealing device for a bearing.
るラビリンス形成部分と、このラビリンス形成部分より
も内径側でシール溝側面に接触するリップとを有するも
のであり、耐油性被膜が少なくとも前記ラビリンス形成
部分からリップの付け根部分にかけて連続して設けられ
ている、請求項１に記載の軸受の密封装置。The rubber portion has a labyrinth forming portion which is close to and opposes the seal groove of the inner ring, and a lip which is in contact with the side surface of the seal groove on the inner diameter side of the labyrinth forming portion. The bearing sealing device according to claim 1, wherein the sealing device is provided continuously from the labyrinth forming portion to the base of the lip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992073392U JP2589032Y2 (en) | 1992-10-21 | 1992-10-21 | Bearing sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1992073392U JP2589032Y2 (en) | 1992-10-21 | 1992-10-21 | Bearing sealing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0637626U JPH0637626U (en) | 1994-05-20 |
| JP2589032Y2 true JP2589032Y2 (en) | 1999-01-20 |
Family
ID=13516885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1992073392U Expired - Lifetime JP2589032Y2 (en) | 1992-10-21 | 1992-10-21 | Bearing sealing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2589032Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4154161B2 (en) * | 2002-03-08 | 2008-09-24 | 株式会社山田製作所 | Water pump bearing seal device |
| CN102691727A (en) * | 2012-06-19 | 2012-09-26 | 宁波摩根轴承有限公司 | Bearing inner ring |
| JP2014139451A (en) * | 2013-01-21 | 2014-07-31 | Nok Corp | Seal device |
-
1992
- 1992-10-21 JP JP1992073392U patent/JP2589032Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0637626U (en) | 1994-05-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5005992A (en) | Seal for self-aligning bearings | |
| US3203740A (en) | Bearing seal | |
| US4377312A (en) | Bearing seal | |
| US5613691A (en) | Sealing device for universal joint with integral sealing lips and cover portion | |
| JPS6292324U (en) | ||
| JP2589032Y2 (en) | Bearing sealing device | |
| JP4232916B2 (en) | Rolling bearing seal structure | |
| KR880013178A (en) | Sealing assembly having a sealing surface with titanium nitride coating | |
| JPS60184428U (en) | Sealing device for rolling bearings | |
| JP2002364665A (en) | Needle bearing for universal joint | |
| JPH07127650A (en) | Sealing device of bearing | |
| JP2551738Y2 (en) | Bearing device | |
| JP2003004054A (en) | Sealing system of rolling bearing | |
| JPH0619859Y2 (en) | Bearing pressure-resistant sealing device | |
| JPH08296658A (en) | Seal structure of roller bearing | |
| JPS6181013U (en) | ||
| JP2597961Y2 (en) | Sealing device | |
| JPH08226449A (en) | Antifriction bearing sealing device and seal thereof | |
| JPS5967624U (en) | Rolling bearing sealing device | |
| JP2000002254A (en) | Seal for bearing unit | |
| JPS621495Y2 (en) | ||
| JPH0673454U (en) | Rolling bearing sealing device | |
| JPH07217663A (en) | Sealing device | |
| JPS6382864U (en) | ||
| JPH07332379A (en) | Sealing device for deep groove ball bearing |