JP3136314B2 - Bearing seal - Google Patents
Bearing sealInfo
- Publication number
- JP3136314B2 JP3136314B2 JP5657295A JP5657295A JP3136314B2 JP 3136314 B2 JP3136314 B2 JP 3136314B2 JP 5657295 A JP5657295 A JP 5657295A JP 5657295 A JP5657295 A JP 5657295A JP 3136314 B2 JP3136314 B2 JP 3136314B2
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- seal
- bearing seal
- liquid
- bent portion
- 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 - Fee Related
Links
- 239000007788 liquid Substances 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 16
- 239000003566 sealing material Substances 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 238000002788 crimping Methods 0.000 claims description 3
- 239000012943 hotmelt Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000012812 sealant material Substances 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004610 Internal Lubricant Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—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
- F16C33/785—Bearing shields made of sheet metal
-
- 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
- F16C19/02—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】本発明は、大量にしかも安価に生
産することを可能とし、密封性に優れかつベアリングへ
の固着性にも優れるベアリングシールに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing seal which can be mass-produced at a low cost, is excellent in sealing performance, and is excellent in fixing to a bearing.
【０００２】[0002]
【従来の技術】従来、ベアリングに装着されて密封をな
すベアリングシールは、様々な固定手段によって前記ベ
アリングの固定部へ装着されている。例えば、金属から
なる環状シールではベアリングの嵌合部へその周端部が
強制的に加締められて固定され、また、補強環を内含し
た弾性体からなる摺動タイプの弾性シールでは固定部で
もその弾力を利用してベアリングの嵌合溝へ変形圧挿入
しており、該固定部分ではある程度の圧縮歪を伴って取
付けられている。2. Description of the Related Art Conventionally, a bearing seal mounted on a bearing to form a seal is mounted on a fixed portion of the bearing by various fixing means. For example, in the case of an annular seal made of metal, the peripheral end of the bearing is forcibly fixed to the fitting portion of the bearing by being caulked, and in the case of a sliding type elastic seal made of an elastic body including a reinforcing ring, the fixed portion is fixed. However, the elastic force is used to insert the deformation pressure into the fitting groove of the bearing, and the fixed portion is attached with a certain degree of compressive strain.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、前記の
ようなベアリングシールはそれぞれ解決されなければな
らない決定的な欠点を有している。前者のベアリングの
嵌合部へその周端部が強制的に加締められて固定される
金属製の環状シールの場合では、該固定部分が金属同志
の密接によって密封性を維持期待するものであるから十
分な密封手段となり得ず、装着初期から徐々に該接合部
へ内部の潤滑剤が滲み出す欠点を現わす。また、ベアリ
ングへベアリングシールを強固に加締めるため、加締め
側のベアリングレースが薄く形成されている場合、該ベ
アリングレースに数ミクロンの変形が起こりベアリング
の精度を著しく低下させる原因になっている。However, each of these bearing seals has the decisive disadvantage that must be solved. In the former case of a metal annular seal in which the peripheral end portion is forcibly fixed to the fitting portion of the bearing by being caulked, it is expected that the fixed portion maintains the sealing property by close contact between the metals. Therefore, a sufficient sealing means cannot be provided, and the internal lubricant gradually leaks into the joint from the initial stage of mounting. Further, when the bearing race on the caulking side is formed thin in order to strongly caulk the bearing seal to the bearing, the bearing race is deformed by several microns, which causes the precision of the bearing to be remarkably deteriorated.
【０００４】この欠点を解消するために実公昭３７−３
１６２７号公報の如くの固定手段が開発されている。こ
れを図面によって説明すると図３に示すように、ベアリ
ング（１）の円筒面に密接する縁（５１）を有するシー
ル板（５）を接着剤（６）を用いて該ベアリング（１
ａ）へ固定し、もってシール板（５）の固定を容易とす
ると共に該固定部からの潤滑剤の漏洩を防ぐものであ
る。In order to solve this disadvantage, Japanese Utility Model Publication No. 37-3
A fixing means as disclosed in Japanese Patent No. 1627 has been developed. This will be described with reference to the drawings. As shown in FIG. 3, a sealing plate (5) having an edge (51) closely contacting the cylindrical surface of the bearing (1) is formed on the bearing (1) using an adhesive (6).
a), thereby facilitating the fixing of the seal plate (5) and preventing the lubricant from leaking from the fixing portion.
【０００５】しかし、この接着されるシール板（５）に
あっては、該接着部分が振動あるいは熱に対して永続的
に完璧な固定を保証せず、ともするとはがれたりあるい
は亀裂発生などが起こる危険性を常に有し最悪な場合は
ベアリングシールが脱落する恐れさえ有る不完全な固定
構造となっている。また、装着性においては、取付け状
態の良否によってシール性能が左右されるので慎重で熟
練を要する装着作業が必要となっている。また、図４に
示す後者の弾性シール（７）の固定部（７１）をベアリ
ング（１ａ）の堀削溝（４）へ圧入装着せしめる固定構
造にあっては、その弾力を利用してベアリング（１ａ）
の堀削溝（４）内へ圧縮変形させており、従って、該堀
削溝（４）に接触する固定部（７１）とその近辺部分は
常時強い圧縮歪を受ける状態にあるので、該固定部（７
１）の弾性体の応力緩和を引き起こしその弾性反発力を
緩め密封性能を低下させる恐れがある。本発明はこのよ
うな欠点に鑑み、装着固定性及び密封性が高く製造コス
トに優れるベアリングシールを提供することを目的とし
ている。[0005] However, in the bonded sealing plate (5), the bonded portion does not guarantee permanent perfect fixation against vibration or heat, and may peel off or crack. There is always a danger, and in the worst case, an incomplete fixing structure in which the bearing seal may even fall off. Further, regarding the mounting property, since the sealing performance is affected by the quality of the mounting state, a careful and skillful mounting operation is required. Further, in the fixing structure shown in FIG. 4 in which the fixing portion (71) of the elastic seal (7) is press-fitted into the excavation groove (4) of the bearing (1a), the bearing ( 1a)
Since the fixing portion (71) in contact with the excavation groove (4) and the vicinity thereof are always subjected to strong compressive strain, the fixing deformation is performed. Department (7
There is a possibility that the stress relaxation of the elastic body of 1) is caused, the elastic repulsion is loosened, and the sealing performance is reduced. The present invention has been made in view of the above-described drawbacks, and has as its object to provide a bearing seal that has high fixing and sealing properties and is excellent in manufacturing cost.
【０００６】[0006]
【課題を解決するための手段】本発明は、図２に示すよ
うに、ベアリング（１ａ）に取り付けられ、その密封を
なすベアリングシールであって、、図１に示すように金
属等からなるシールリング（２）の外周縁部に折曲部
（２１）を設け、前記折曲部（２１）の外表面へ液状シ
ール材（３）を塗布しこれを硬化せしめてベアリングシ
ールとなし、ベアリング（１ａ）の堀削溝（４）へ前記
折曲部（２１）を載置した後、圧入治具を用いてこれを
加締め外周縁を拡径して該堀削溝（４）へ装着せしめる
ことを特徴としている。また、前記の金属等からなるシ
ールリング（２）へ塗布せしめる液状シール材（３）と
して、液状ゴム、液状プラスチック、ホットメルトタイ
プを含む弾性を持つ接着剤、シーラント材のいずれかを
用いることを特徴としている。According to the present invention, as shown in FIG. 2, a bearing seal attached to a bearing (1a) for sealing the bearing is provided, and as shown in FIG. A bent portion (21) is provided on the outer peripheral edge of the ring (2), a liquid sealing material (3) is applied to the outer surface of the bent portion (21), and this is cured to form a bearing seal. After placing the bent portion (21) in the excavation groove (4) of 1a), the bent portion (21) is crimped using a press-fitting jig and the outer peripheral edge is expanded to be mounted in the excavation groove (4). It is characterized by: Further, as the liquid seal material (3) applied to the seal ring (2) made of the above-mentioned metal or the like, any one of liquid rubber, liquid plastic, an elastic adhesive including a hot melt type, and a sealant material is used. Features.
【０００７】[0007]
【作用】本発明は、上記した構成をもって下記に示す優
れた作用をなす。すなわち、図１に示すように金属等に
て外周縁部に折曲部（２１）を有するシールリング
（２）を形成し、この折曲部（２１）の外周面に液状シ
ール材（３）を塗布・硬化せしめ、該外周面の凹凸に完
璧に沿う１０μｍ〜３００μｍ程度の厚みのシール膜を
持ったベアリングシールを形成せしめる。The present invention has the following excellent functions with the above configuration. That is, as shown in FIG. 1, a seal ring (2) having a bent portion (21) at the outer peripheral edge is formed of metal or the like, and a liquid sealing material (3) is formed on the outer peripheral surface of the bent portion (21). Is applied and cured to form a bearing seal having a seal film having a thickness of about 10 μm to 300 μm which perfectly conforms to the irregularities on the outer peripheral surface.
【０００８】このベアリングシールをベアリング（１
ａ）の堀削溝（４）へ装着せしめるためには、図２に示
すように折曲部（２１）を外部側から加圧手段によって
拡径変形せしめて固着を図るが、このとき前記折曲部
（２１）の外周面は液状シール材（３）の硬化したシー
ル膜が前記変形に追従して拡径され堀削溝（４）内表面
へぴったり密着して装着完了を見る。このように折曲部
（２１）及びシール膜共々堀削溝（４）へ圧入固定が図
られると、振動、熱等に屈しない強固な固定が約束され
高いシール性を得ることができる。また、弾性体を挟ん
でベアリング（１ａ）へ固定されるためベアリング（１
ａ）の変形が起こらない。[0008] The bearing seal (1)
In order to attach the bent part (21) to the excavated groove (4) as shown in FIG. 2, the bent part (21) is expanded and deformed by a pressing means from the outside as shown in FIG. On the outer peripheral surface of the curved portion (21), the hardened sealing film of the liquid sealing material (3) expands in diameter following the deformation, and is tightly adhered to the inner surface of the excavation groove (4) to confirm the completion of mounting. When the bent portion (21) and the seal film are press-fitted into the excavated groove (4) in this manner, a strong fixing that does not yield to vibration, heat, or the like is promised, and high sealing properties can be obtained. Further, since the elastic body is fixed to the bearing (1a), the bearing (1a) is fixed.
The deformation of a) does not occur.
【０００９】[0009]
【実施例】本発明を実施するに、シールリング（２）は
予め鋼板、鉄板、ステンレス板等の金属からリング状に
打ち抜き加工せしめて形成し、適当な表面処理を施して
おく。この表面へ塗布せしめる液状シール材（３）とし
ては、液状ゴム、液状プラスチック、ホットメルトタイ
プを含む弾性を持つ接着剤、シーラント材のいずれか
を、前記シールリング（２）の材質との適合あるいは要
求されるシール性能によって適宜選択して用いる。この
液状シール材（３）のシールリング（２）への塗布にお
いては、ベアリング（１ａ）の堀削溝（４）へ接する環
面のみ部分的に塗布形成するのが経済性から見て好まし
いものとなるが、塗布作業を簡素化するために塗布する
側の片面全面に該液状シール材（３）を塗布しても差し
支えなく、塗布した後自然硬化あるいは加熱硬化または
紫外線硬化等せしめてベアリングシールを完成する。DESCRIPTION OF THE PREFERRED EMBODIMENTS In order to carry out the present invention, a seal ring (2) is formed by punching a metal such as a steel plate, an iron plate, a stainless steel plate or the like into a ring shape and performing an appropriate surface treatment. As the liquid sealing material (3) to be applied to the surface, any one of liquid rubber, liquid plastic, an elastic adhesive including a hot melt type, and a sealant material may be used in conformity with the material of the seal ring (2) or It is appropriately selected and used depending on the required sealing performance. In applying the liquid sealing material (3) to the seal ring (2), it is preferable from the economical viewpoint that only the annular surface of the bearing (1a) that is in contact with the excavation groove (4) be applied. However, in order to simplify the application operation, the liquid sealing material (3) may be applied to the entire surface on one side to be applied. To complete.
【００１０】次に、シールリング（２）の外周縁部の折
曲部（２１）の形状としては、圧入加締め固定するため
とベアリング（１ａ）の堀削溝（４）への密着性から、
図１に示すような折り返された巻形状が好ましいが、加
締めた後に前記堀削溝（４）へ密着する形状故単純な略
Ｌ字形状であっても事足りる。Next, the shape of the bent portion (21) on the outer peripheral edge of the seal ring (2) is determined by press-fitting and crimping, and by the close contact of the bearing (1a) with the excavation groove (4). ,
Although a folded wound shape as shown in FIG. 1 is preferable, a simple L-shape is sufficient because it is in close contact with the excavation groove (4) after caulking.
【００１１】なお、本発明を説明した実施例図１、及び
図２ではいづれもベアリングシールの外径側がベアリン
グ外輪（１ａ）へ装着される構造を示したが、該固定部
がベアリング内輪（１ｂ）に位置する構造に対しても対
応可能なことは言うまでもない。Although FIGS. 1 and 2 illustrate the embodiment of the present invention, the structure in which the outer diameter side of the bearing seal is mounted on the bearing outer ring (1a) is shown. It is needless to say that the present invention can also be applied to the structure described in (1).
【００１２】[0012]
【発明の効果】本発明によると、ベアリングシールの固
定部分がシール材を伴って加締め装着されるので高い取
付け精度を約束し、また該シール材のクッション作用に
よって取付部であるベアリング（１ａ）が加締めによる
変形を免れる。また、ベアリングシールは加締めること
によって液状シール材（３）を堀削溝（４）へぴったり
密着させるので強力な密封性能と高い固定性能を発揮す
るシール構造となった。このように、極めて単純で簡素
な構成をもって製造され、高い取付精度と密封性能を得
たものであり、低コストで装着作業を大幅に短縮せしめ
たベアリングシールとなったものである。According to the present invention, the fixed portion of the bearing seal is swaged and attached together with the sealing material, so that high mounting accuracy is assured, and the bearing (1a) as the mounting portion is provided by the cushioning action of the sealing material. Avoids deformation due to crimping. In addition, the bearing seal is crimped to bring the liquid sealing material (3) into close contact with the excavation groove (4), so that a sealing structure exhibiting strong sealing performance and high fixing performance is obtained. As described above, the bearing seal is manufactured with an extremely simple and simple structure, has high mounting accuracy and high sealing performance, and is a low cost bearing seal in which mounting work is greatly reduced.
【００１３】[0013]
【図１】本発明の一実施例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of the present invention.
【図２】本発明の装着状態を示す断面図である。FIG. 2 is a cross-sectional view showing a mounted state of the present invention.
【図３】本発明を使用しない従来例の装着状態を示す断
面図である。FIG. 3 is a cross-sectional view showing a mounting state of a conventional example not using the present invention.
【図４】本発明を使用しない他の従来例の装着状態を示
す断面図である。FIG. 4 is a cross-sectional view showing a mounting state of another conventional example not using the present invention.
１ ベアリング １ａ ベアリング外輪 １ｂ ベアリング内輪 ２ シールリング ２１ 折曲部 ３ 液状シール材 ４ 堀削溝 ５ シール板 ５１ 縁 ６ 接着剤 ７ 弾性シール ７１ 固定部 DESCRIPTION OF SYMBOLS 1 Bearing 1a Bearing outer ring 1b Bearing inner ring 2 Seal ring 21 Bent part 3 Liquid sealing material 4 Drilling groove 5 Seal plate 51 Edge 6 Adhesive 7 Elastic seal 71 Fixed part
Claims (2)
封をなすベアリングシールにおいて、 金属等からなるシールリングの外周縁部に折曲部を設
け、この折曲部の外表面へ液状シール材を塗布硬化せし
めその厚みを１０μｍ〜３００μｍに形成してベアリン
グシールとなし、 ベアリングの堀削溝へ前記折曲部を載置した後これを加
締め拡径して装着せしめることを特徴とするベアリング
シール。In a bearing seal which is attached to a bearing and seals inside and outside thereof, a bent portion is provided on an outer peripheral portion of a seal ring made of metal or the like, and a liquid sealing material is applied to the outer surface of the bent portion and cured. A bearing seal having a thickness of 10 μm to 300 μm to form a bearing seal, and mounting the bent portion in a digging groove of a bearing, and then crimping the expanded portion to mount it.
封をなすベアリングシールにおいて、金属等からなるシ
ールリングへ塗布せしめる液状シール材として、液状ゴ
ム、液状プラスチック、ホットメルトタイプを含む弾性
を持つ接着剤、シーラント材のいずれかを用いることを
特徴とする請求項１のベアリングシール。2. A bearing seal which is attached to a bearing and seals the inside and outside of the bearing, as a liquid sealing material applied to a sealing ring made of metal or the like, an elastic adhesive including liquid rubber, liquid plastic, hot melt type, The bearing seal according to claim 1, wherein one of sealant materials is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5657295A JP3136314B2 (en) | 1995-02-20 | 1995-02-20 | Bearing seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5657295A JP3136314B2 (en) | 1995-02-20 | 1995-02-20 | Bearing seal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08320023A JPH08320023A (en) | 1996-12-03 |
| JP3136314B2 true JP3136314B2 (en) | 2001-02-19 |
Family
ID=13030869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5657295A Expired - Fee Related JP3136314B2 (en) | 1995-02-20 | 1995-02-20 | Bearing seal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3136314B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001082495A (en) * | 1999-09-14 | 2001-03-27 | Uchiyama Mfg Corp | Bearing seal for hard disc drive |
-
1995
- 1995-02-20 JP JP5657295A patent/JP3136314B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08320023A (en) | 1996-12-03 |
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