JPS6321784Y2 - - Google Patents
Info
- Publication number
- JPS6321784Y2 JPS6321784Y2 JP1983032941U JP3294183U JPS6321784Y2 JP S6321784 Y2 JPS6321784 Y2 JP S6321784Y2 JP 1983032941 U JP1983032941 U JP 1983032941U JP 3294183 U JP3294183 U JP 3294183U JP S6321784 Y2 JPS6321784 Y2 JP S6321784Y2
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- ring
- sealing
- sliding
- sliding surface
- 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
Links
- 238000007789 sealing Methods 0.000 claims description 50
- 238000005096 rolling process Methods 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 239000007787 solid Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000011553 magnetic fluid Substances 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Mechanical Sealing (AREA)
Description
【考案の詳細な説明】
この考案は転がり軸受の密封装置に関するもの
である。[Detailed description of the invention] This invention relates to a sealing device for a rolling bearing.
転がり軸受の密封装置に課された機能は、外部
から軸受内部への流体（水、蒸気、その他の流体
など）や固体（異物、ごみなど）の浸入を防ぐこ
とと、軸受内部から外部への封入潤滑剤の流出を
防ぐことである。 The functions of the sealing device for rolling bearings are to prevent the infiltration of fluids (water, steam, other fluids, etc.) and solids (foreign objects, dirt, etc.) from the outside into the bearing, and to prevent the intrusion of solids (foreign objects, dirt, etc.) from the inside of the bearing to the outside. The purpose is to prevent the encapsulated lubricant from leaking out.
従来からこの機能を満足させる目的で後記する
種種の密封装置が実用化されているが、それ等に
はそれぞれの欠点がある。 Conventionally, various types of sealing devices described below have been put into practical use for the purpose of satisfying this function, but each of them has its own drawbacks.
その欠点とは、
(1) ゴム等の摺動材が摺動面に接触するもの（接
触形シール）
◎ 摺動面積が小のため密封性が悪い。 The disadvantages are: (1) Rubber or other sliding material contacts the sliding surface (contact type seal) ◎ Poor sealing performance due to small sliding area.
◎ 摺動材が軟質のため密封面の確保が困難な
上、高圧力差に耐え難い。 ◎ Since the sliding material is soft, it is difficult to secure a sealed surface and it is difficult to withstand high pressure differences.
◎ 摺動材が摩耗すると密封性が落ちる。 ◎ If the sliding material wears out, the sealing performance will deteriorate.
(2) ラビリンスすきまで密封するもの（非接触形
シール）
◎ すきまがあるため、固体や液体の密封性が
悪い。(2) Seals that seal up to the labyrinth gap (non-contact type seal) ◎ Due to the gap, sealing performance for solids and liquids is poor.
◎ 軸受内部からの潤滑剤の流出に対して流出
防止効果が極めて小さい。 ◎ The effect of preventing lubricant from flowing out from inside the bearing is extremely small.
(3) 磁性流体を用いるもの（磁性流体シール） ◎ 高圧力の流出を密封することは難しい。(3) Items that use magnetic fluid (magnetic fluid seal) ◎ Difficult to seal high pressure spills.
◎ 磁性流体と外部流体または固体との適合性
如何では有効な密封ができない。 ◎ Effective sealing cannot be achieved depending on the compatibility of the magnetic fluid with the external fluid or solid.
等があり、いまだに密封性能の十分なものはなか
つた。etc., and there is still no product with sufficient sealing performance.
この考案の目的は上記欠点を解決した転がり軸
受の密封装置を提供することにある。 The purpose of this invention is to provide a sealing device for a rolling bearing that solves the above-mentioned drawbacks.
この考案は一対の軌道輪を有する転がり軸受の
密封装置であつて、一方の軌道輪に摺動面を形成
し、該摺動面に対向させて従動リングを設け、該
従動リングを直接または間接的に他方の軌道輪に
固定した弾性部材に固着して、前記摺動面に前記
従動リングを弾発的に摺接させて密封する密封部
と、前記弾性部材を固定している支持板の内周若
しくは外周縁が前記一方の軌道輪に近接若しくは
摺接し、前記密封部の外方に位置して前記密封部
を補助する補助密封部、または、前記弾性部材自
身の内周若しくは外周縁が前記一方の軌道輪に近
接若しくは摺接し、前記密封部の外方に位置して
前記密封部を補助する補助密封部を備える転がり
軸受の密封装置である。 This device is a sealing device for a rolling bearing having a pair of bearing rings, in which a sliding surface is formed on one bearing ring, a driven ring is provided opposite the sliding surface, and the driven ring is connected directly or indirectly. a sealing portion which is fixed to an elastic member fixed to the other bearing ring and which causes the driven ring to elastically slide into contact with the sliding surface for sealing; and a support plate fixing the elastic member. An auxiliary sealing part whose inner periphery or outer periphery is close to or in sliding contact with the one raceway ring and which is located outside of the sealing part and assists the sealing part, or an inner periphery or outer periphery of the elastic member itself The sealing device for a rolling bearing includes an auxiliary sealing part that is in close or sliding contact with one of the bearing rings, is located outside the sealing part, and assists the sealing part.
次にこの考案を図に示す実施例について詳述す
る。 Next, this invention will be described in detail with reference to an embodiment shown in the drawings.
第１図のものはこの考案の第１実施例である。
外輪１（軌道輪）、内輪２（軌道輪）、転動体３、
保持器４からなる軸受要素は密封装置に係わる以
外の部分は通常の玉軸受と同じである。内輪２の
外周端部には段部２１が設けられ、軸受側面と平
行な面である摺動面１０１が形成されている、外
輪１の内周端部には段部１１が設けられ、段部１
１内に支持板７１の外周部をスナツプリング８に
よつて固定されている。従つてこの固定手段によ
つて軸受の第１部分の密封を構成している、支持
板７１の内方側面には内方に向つて伸長している
弾性部材であるベローズ形のばね６の一端が固着
している。ばね６の他端には従動リング５が固着
している。従動リング５は断面Ｌ字状の補助部材
５２と摺動部材５１とからなり、摺動部材５１の
内方の側面は摺動面１０１と対向し、かつばね６
によつて弾発され、摺動面１０１に摺接する面１
０２となつている。従つて、摺動面１０１と面１
０２との摺接によつて軸受の第２部分の密封を構
成し、更に、支持板７１の内周が段部２１に近接
するまで延長されていて、その近接している部分
において、第２部分の密封を補助する第３部分の
密封を構成している。なお図面において密封装置
の部分の符号を軸受の右側のみ符して説明した
が、左側も全く同じ密封装置をこの実施例では装
着している。 The one in FIG. 1 is the first embodiment of this invention.
Outer ring 1 (raceway ring), inner ring 2 (raceway ring), rolling elements 3,
The bearing element consisting of the retainer 4 is the same as a normal ball bearing except for the parts related to the sealing device. A stepped portion 21 is provided at the outer peripheral end of the inner ring 2, and a sliding surface 101, which is a surface parallel to the side surface of the bearing, is formed.A stepped portion 11 is provided at the inner peripheral end of the outer ring 1, Part 1
The outer periphery of the support plate 71 is fixed in the inside of the support plate 1 by a snap spring 8. On the inner side of the support plate 71, which constitutes a sealing of the first part of the bearing by means of this fixing means, there is provided one end of a bellows-shaped spring 6, which is an elastic member extending inwardly. is stuck. A driven ring 5 is fixed to the other end of the spring 6. The driven ring 5 consists of an auxiliary member 52 having an L-shaped cross section and a sliding member 51. The inner side surface of the sliding member 51 faces the sliding surface 101, and the spring 6
The surface 1 that is ejected by the slider and comes into sliding contact with the sliding surface 101
02. Therefore, sliding surface 101 and surface 1
02, the second portion of the bearing is sealed, and furthermore, the inner periphery of the support plate 71 is extended until close to the stepped portion 21, and in the adjacent portion, the second portion of the bearing is sealed. A third part sealing aids in the part sealing. In the drawings, only the sealing device on the right side of the bearing is designated by reference numerals, but the same sealing device is also installed on the left side in this embodiment.
次に、第２図はこの考案の第２実施例を示して
いる。 Next, FIG. 2 shows a second embodiment of this invention.
外輪１、内輪２、転動体３、保持器４からなる
軸受要素は密封装置に係わる以外の部分は通常の
円筒ころ軸受と同じである。外輪１の内周端面に
は段部１１が設けられ、軸受側面と平行な面であ
る摺動面１０１が形成されている。内輪２の外周
端部には段部２１が形成され、この段部２１内に
その内周部をそれ自身の持つ弾性力で固定された
ゴム等の環状の弾性部材６が配設されている。な
お符号７２は弾性部材６の補強部材である。従つ
て、弾性部材６の内周部の固定が軸受の第１部分
の密封を構成している。弾性部材６の外周部には
摺動リング５を固着している。従動リング５は断
面Ｌ字状の補助部材５２と摺動部材５１とからな
り、摺動部材５１の内方の側面は摺動面１０１と
対向し、かつ弾性部材６によつて弾発され、摺動
面１０１に摺接する面１０２となつている。従つ
て、摺動面１０１と面１０２との摺接によつて軸
受の第２部分の密封を構成している。また、弾性
部材６の外周部から半径方向外方に伸びるリツプ
９が形成されていて、リツプ９の先端が段部１１
の内周に摺接し（従来からある接触形シール構造
となつて）、前記第２部分の密封の補助の密封部
を形成している。 The bearing element consisting of the outer ring 1, the inner ring 2, the rolling elements 3, and the retainer 4 is the same as a normal cylindrical roller bearing except for the parts related to the sealing device. A stepped portion 11 is provided on the inner circumferential end surface of the outer ring 1, and a sliding surface 101 that is a surface parallel to the bearing side surface is formed. A stepped portion 21 is formed at the outer peripheral end of the inner ring 2, and an annular elastic member 6 made of rubber or the like is disposed within the stepped portion 21, the inner peripheral portion of which is fixed by its own elastic force. . Note that the reference numeral 72 is a reinforcing member of the elastic member 6. Therefore, the fixing of the inner peripheral portion of the elastic member 6 constitutes the sealing of the first portion of the bearing. A sliding ring 5 is fixed to the outer periphery of the elastic member 6. The driven ring 5 is composed of an auxiliary member 52 having an L-shaped cross section and a sliding member 51, and the inner side surface of the sliding member 51 faces the sliding surface 101 and is resiliently pushed by the elastic member 6. A surface 102 comes into sliding contact with a sliding surface 101 . Therefore, the sliding contact between the sliding surface 101 and the surface 102 constitutes a sealing of the second portion of the bearing. Further, a lip 9 is formed extending radially outward from the outer circumferential portion of the elastic member 6, and the tip of the lip 9 is connected to the stepped portion 11.
(in a conventional contact type seal structure) to form a sealing portion to assist in sealing the second portion.
次に、第３図はこの考案の第３実施例を示して
いる。 Next, FIG. 3 shows a third embodiment of this invention.
外輪１、内輪２、転動体３、保持器４からなる
軸受要素は密封装置に係わる以外の部分は通常の
円すいころ軸受と同しである。この実施例でも軸
受の両側部に密封装置を装着している。しかし、
図中右側と左側とで違いは、外輪や内輪に形成さ
れる摺動面あるいは取り付けられる部材が外輪と
内輪とが逆になつたものであるので、右側のみの
密封装置に符号を符して説明する、内輪２の外周
右端部には段部２１が設けられ、段部２１の側面
は半径方向外側に向つて再干内方に傾斜した面と
なつている。この実施例では前記傾斜した面と段
部２１の傾斜した面側の１部の外周面とで摺動面
１０１を構成している、外輪１の内周右端部には
段部１１が設けられ、段部１１内に支持板７１の
外周部をスナツプリング８によつて固定されてい
る。更に段部の壁とスナツプリング８の外周との
すきまにはパツキン１０が詰められている。従つ
て前記固定とパツキン１０により軸受第１部分の
密封を構成している。支持板７１の内方端面には
内方に向つて伸長している弾性部材であるベロー
ズ形のばね６の一端が固着している。ばね６の他
端には従動リング５が固着している。従動リング
５は内方側面と内周面を前記摺動面１０１に対向
している面１０２を有し、該面１０２は滑り接触
と漏れの防止に適したメツキ等が施されている。
従動リング５はばね６によつて弾発され、従動リ
ング５が摺動面に摺接して軸受の第２部分の密封
を構成している。また、この実施例では支持板７
１の内周部にゴム等のリツプ９が固着されてい
て、リツプ９の先端が段部２１の外周面に摺接
し、前記第２部分の密封の補助の密封部を形成し
ている。 The bearing element consisting of an outer ring 1, an inner ring 2, rolling elements 3, and cage 4 is the same as a normal tapered roller bearing except for the parts related to the sealing device. In this embodiment as well, sealing devices are installed on both sides of the bearing. but,
The difference between the right side and the left side in the figure is that the sliding surfaces formed on the outer ring and inner ring or the attached members are the outer ring and inner ring reversed, so the sealing device on the right side only is marked with the symbol. A stepped portion 21 is provided at the right end of the outer circumference of the inner ring 2, and the side surface of the stepped portion 21 is a surface that slopes outward in the radial direction and then inward. In this embodiment, a stepped portion 11 is provided at the right end of the inner circumference of the outer ring 1, and the sliding surface 101 is constituted by the inclined surface and a portion of the outer circumferential surface on the inclined surface side of the stepped portion 21. , the outer periphery of the support plate 71 is fixed within the stepped portion 11 by a snap spring 8. Furthermore, the gap between the wall of the stepped portion and the outer periphery of the snap spring 8 is filled with a packing 10. Therefore, the fixing and the packing 10 constitute a seal for the first portion of the bearing. One end of a bellows-shaped spring 6, which is an elastic member extending inward, is fixed to the inner end surface of the support plate 71. A driven ring 5 is fixed to the other end of the spring 6. The driven ring 5 has an inner side surface and an inner peripheral surface 102 facing the sliding surface 101, and the surface 102 is plated or the like suitable for preventing sliding contact and leakage.
The driven ring 5 is biased by a spring 6 so that the driven ring 5 slides against the sliding surface and forms a seal for the second part of the bearing. In addition, in this embodiment, the support plate 7
A lip 9 made of rubber or the like is fixed to the inner periphery of the step 21, and the tip of the lip 9 slides on the outer periphery of the stepped portion 21 to form a sealing portion to assist in sealing the second portion.
次に、第４図はこの考案の第４実施例を示して
いる。外輪１、内輪２、転動体３、保持器４から
なる軸受要素は密封装置に係わる以外の部分は通
常の玉軸受と同じである。内輪２の一方の外周端
部には軸受の側面に向つて小径となる傾斜した摺
動面１０１が形成されている。更に、内輪２の外
周端部は摺動面１０１に続く円筒面となつてい
る。外輪１の一方の内周端部には段部１１が設け
られ、段部１１内に、断面コ字状である支持板７
１の外周に固着しているパツキン兼用の弾性部材
２０が装着されている。従つて、この装着によつ
て軸受の第１部分の密封を構成している。支持板
７１の弾性部材２０が固着している面の反対面に
は弾性部材であるベローズ形のばね６の一端が固
着している。ばね６は内輪２の方へ伸長してい
て、その他端には従動リング５を固着している。
従動リング５は摺動面１０１に対向する面１０２
を有し、ばね６によつて弾発され、摺動面１０１
に摺接している。従つてこの摺接により軸受の第
２部分の密封が構成される。更に、支持板７１の
内周面と内輪の端部の前記円筒面との間はわずか
なすきまであつて、第２部分の密封の補助をする
非接触の密封部を形成している。 Next, FIG. 4 shows a fourth embodiment of this invention. The bearing element consisting of an outer ring 1, an inner ring 2, rolling elements 3, and cage 4 is the same as a normal ball bearing except for the parts related to the sealing device. A sliding surface 101 is formed at one outer circumferential end of the inner ring 2 and has an inclined sliding surface 101 that becomes smaller in diameter toward the side surface of the bearing. Furthermore, the outer peripheral end of the inner ring 2 is a cylindrical surface that continues to the sliding surface 101. A step 11 is provided at one inner peripheral end of the outer ring 1, and a support plate 7 having a U-shaped cross section is provided within the step 11.
An elastic member 20 that also serves as a gasket is attached to the outer periphery of 1. This mounting therefore constitutes a sealing of the first part of the bearing. One end of a bellows-shaped spring 6, which is an elastic member, is fixed to the opposite surface of the support plate 71 to the surface to which the elastic member 20 is fixed. The spring 6 extends toward the inner ring 2 and has a driven ring 5 fixed to its other end.
The driven ring 5 has a surface 102 facing the sliding surface 101.
The sliding surface 101 is elasticized by the spring 6 and
It is in sliding contact with the This sliding contact thus constitutes a sealing of the second part of the bearing. Furthermore, there is a slight gap between the inner circumferential surface of the support plate 71 and the cylindrical surface of the end of the inner ring, forming a non-contact sealing portion that assists in sealing the second portion.
以上、実施例において、摺動面１０１及び従動
リング５の摺接する面１０２は、滑り接触と漏れ
の防止に適したものの組合せとし、各面は基材へ
の接着、溶射、めつき、プレーテイング等の方法
で形成してもよい。また材料の一例として、カー
ボン、鋼、超硬合金、セラミツクなどがある。更
にまた、各面は適当に良く仕上げられ、表面あら
さやうねりの小さい面とし、形状・寸法は漏れの
抑制に有効なものを適宜実施するものである。 In the above embodiments, the sliding surface 101 and the sliding surface 102 of the driven ring 5 are a combination of materials suitable for sliding contact and leak prevention, and each surface is coated with adhesive, thermal spraying, plating, or plating to the base material. It may be formed by a method such as Examples of materials include carbon, steel, cemented carbide, and ceramic. Furthermore, each surface is suitably well-finished and has small surface roughness and waviness, and the shape and dimensions are appropriately selected to be effective in suppressing leakage.
以上の説明のとおり、この考案の密封装置は、
特に軸受の第２部分の密封の構成が弾性部材によ
り、摺動面圧力を適切な値に設定することがで
き、かつ摺動面の広さを適宜大きくとれること、
更に、前記第２部分の密封を補助する補助密封部
を備えることから、従来のものに比して格段に優
れた密封性能を有する転がり軸受の密封装置であ
る。 As explained above, the sealing device of this invention is
In particular, the sealing structure of the second portion of the bearing is made of an elastic member, so that the pressure on the sliding surface can be set to an appropriate value, and the width of the sliding surface can be appropriately increased;
Furthermore, since the present invention includes an auxiliary sealing portion that assists in sealing the second portion, the rolling bearing sealing device has significantly superior sealing performance compared to conventional devices.
第１図、第２図、第３図、第４図はこの考案の
各実施例の縦断面図で、符号５は従動リング、６
は弾性部材、１０１は摺動面、１０２は摺動面に
摺接する面である。
1, 2, 3, and 4 are longitudinal sectional views of each embodiment of this invention, in which reference numeral 5 denotes a driven ring, and 6
1 is an elastic member, 101 is a sliding surface, and 102 is a surface that comes into sliding contact with the sliding surface.
Claims (1)
おいて、一方の軌道輪に形成された摺動面と、該
摺動面に摺接する面を有する従動リングと、他方
の軌道輪に直接または間接的に固定され、前記従
動リングを前記固定された部分の反対側に固着し
ている弾性部材とで構成し、前記摺動面に前記従
動リングの面が弾性的に摺接する密封部と、前記
弾性部材自身または前記弾性部材を固定する支持
板の内周または外周縁が前記一方の軌道輪に近接
または摺接する補助密封部とを備えることを特徴
とする転がり軸受の密封装置。 In a sealing device for a rolling bearing having a pair of bearing rings, a sliding surface formed on one bearing ring, a driven ring having a surface in sliding contact with the sliding surface, and a sliding surface formed on the other bearing ring, directly or indirectly. a sealing portion that is fixed and includes an elastic member that is fixed to the side opposite to the fixed portion of the driven ring, the surface of the driven ring elastically slidingly contacts the sliding surface; and the elastic member A sealing device for a rolling bearing, comprising: an auxiliary sealing portion in which an inner circumference or an outer circumferential edge of a support plate for fixing itself or the elastic member is close to or in sliding contact with the one raceway ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3294183U JPS59139623U (en) | 1983-03-09 | 1983-03-09 | Sealing device for rolling bearings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3294183U JPS59139623U (en) | 1983-03-09 | 1983-03-09 | Sealing device for rolling bearings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59139623U JPS59139623U (en) | 1984-09-18 |
| JPS6321784Y2 true JPS6321784Y2 (en) | 1988-06-15 |
Family
ID=30163748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3294183U Granted JPS59139623U (en) | 1983-03-09 | 1983-03-09 | Sealing device for rolling bearings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59139623U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH053930Y2 (en) * | 1985-03-04 | 1993-01-29 | ||
| DE502006008128D1 (en) * | 2006-03-22 | 2010-12-02 | Paul Mueller Gmbh & Co Kg | Bearings with a porous element to absorb lubricant |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4725652U (en) * | 1971-04-15 | 1972-11-22 |
-
1983
- 1983-03-09 JP JP3294183U patent/JPS59139623U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59139623U (en) | 1984-09-18 |
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