JP2002227856A - Seal device of bearing for axle - Google Patents
Seal device of bearing for axleInfo
- Publication number
- JP2002227856A JP2002227856A JP2001023082A JP2001023082A JP2002227856A JP 2002227856 A JP2002227856 A JP 2002227856A JP 2001023082 A JP2001023082 A JP 2001023082A JP 2001023082 A JP2001023082 A JP 2001023082A JP 2002227856 A JP2002227856 A JP 2002227856A
- Authority
- JP
- Japan
- Prior art keywords
- slinger
- outer ring
- ring member
- sealing device
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims description 33
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 229920003002 synthetic resin Polymers 0.000 claims description 6
- 239000000057 synthetic resin Substances 0.000 claims description 6
- 239000004952 Polyamide Substances 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 239000000843 powder Substances 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
- F16C33/7869—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward
- F16C33/7879—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring
- F16C33/7883—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted with a cylindrical portion to the inner surface of the outer race and having a radial portion extending inward with a further sealing ring mounted to the inner race and of generally L-shape, the two sealing rings defining a sealing with box-shaped cross-section
-
- 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
-
- 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
- F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
- F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
- F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
- F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
- F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
- F16C19/186—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
-
- 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
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/02—Wheel hubs or castors
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】この発明は、自動車に使用さ
れる車軸用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 an axle bearing sealing device used for an automobile.
【０００２】[0002]
【従来の技術】従来、自動車等に使用される車軸用軸受
装置は、図３および図４に示されるものが知られてい
る。すなわち、図示しない車体に取り付けられるフラン
ジ３１ａが形成された固定側外輪部材３１と、図示しな
い車輪が取り付けられるフランジ３０ａが形成されたハ
ブ部材３０ｂと該ハブ部材３０ｂの端部に嵌合された内
輪３０ｃとからなる回転側内輪部材３０と、内外輪部材
３０，３１間に介装され保持器３３で保持される転動体
３２とを有し、内外輪部材３０，３１間を密封する密封
装置３４，３５が外輪部材３１の両端部３１ｂ，３１ｃ
側に装着されている。この車体内部側の外輪部材端部３
１ｂに装着された密封装置３４は、内輪３０ｃの外周面
３０ｄに固定される円筒部３６ａおよびこの円筒部３６
ａの軸受外部側の端部から外輪部材３１に向かって径方
向に延びるフランジ３６ｂとから形成される断面Ｌ形の
ステンレス製スリンガー３６と、外輪部材３１の内周面
３１ｄに固定される円筒部３７ａと上記スリンガー３６
の内面３６ｃに摺接する内周リップ３７ｂが形成された
シール環体３７とから形成されている。このスリンガー
３６のフランジ３６ｂとシール環体３７の円筒部３７ａ
間はラビリンス隙間３８とされている。2. Description of the Related Art Conventionally, an axle bearing device used in an automobile or the like is known as shown in FIGS. That is, a fixed outer ring member 31 having a flange 31a attached to a vehicle body (not shown), a hub member 30b having a flange 30a to which a wheel not shown is attached, and an inner ring fitted to an end of the hub member 30b. A sealing device 34 having a rotating side inner ring member 30 composed of 30c and a rolling element 32 interposed between the inner and outer ring members 30, 31 and held by a retainer 33, and sealing between the inner and outer ring members 30, 31. , 35 are both ends 31b, 31c of the outer race member 31
Mounted on the side. Outer ring member end 3 on the inner side of the vehicle body
1b includes a cylindrical portion 36a fixed to the outer peripheral surface 30d of the inner race 30c and a cylindrical portion 36a.
a slinger 36 made of a stainless steel having an L-shaped cross section formed from a flange 36b extending radially from the outer end of the bearing toward the outer ring member 31, and a cylindrical portion fixed to the inner peripheral surface 31d of the outer ring member 31 37a and the above slinger 36
And an inner peripheral lip 37b slidably in contact with the inner surface 36c. The flange 36b of the slinger 36 and the cylindrical portion 37a of the seal ring 37
The space is defined as a labyrinth gap 38.
【０００３】[0003]
【発明が解決しようとする課題】一般に、車軸用軸受に
おいては、転がり抵抗に占める密封装置３４のリップ摺
動トルクが大きく、この密封装置３４でのトルク低減の
要求が非常に強い。このため、密封装置３４を構成する
スリンガー３６の内面３６ｃに対するシール環体３７の
内周リップ３７ｂの接触圧を低減して回転トルクを下げ
ることが考えられている。しかし、スリンガー３６のフ
ランジ３６ｂとシール環体３７の円筒部３７ａ間はラビ
リンス隙間３８とされているため、自動車等の走行中に
軸受にかかる泥水等がスリンガー３６のフランジ３６ｂ
を伝わり、上記ラビリンス隙間３８から密封装置３４の
内部に侵入することがある。このとき、スリンガー３６
の内面３６ｃに対するシール環体３７の内周リップ３７
ｂの接触圧を低減していると、泥水等がリップ摺接部に
侵入しやすく、リップ３７ｂの損傷の一因となることが
ある。もし、リップ３７ｂが損傷すれば、泥水等が軸受
内部に侵入することになり、軸受寿命が低下する。この
ため、従来の密封装置３４においては、内周リップ３７
ｂの接触圧を低減させることができず、また内周リップ
３７ｂが摺接するスリンガー３６がステンレス製である
ことから内周リップ３７ｂの摺動抵抗がどうしても大き
く、密封性を維持しながら低トルク化を図るのが難しか
った。Generally, in an axle bearing, the lip sliding torque of the sealing device 34 occupying a large amount of rolling resistance is large, and there is a very strong demand for a reduction in the torque of the sealing device 34. For this reason, it is considered that the contact pressure of the inner peripheral lip 37b of the seal ring body 37 with the inner surface 36c of the slinger 36 constituting the sealing device 34 is reduced to lower the rotational torque. However, since a labyrinth gap 38 is provided between the flange 36b of the slinger 36 and the cylindrical portion 37a of the seal ring 37, muddy water or the like applied to the bearing during running of an automobile or the like may cause the flange 36b of the slinger 36.
Through the labyrinth gap 38 to enter the inside of the sealing device 34 in some cases. At this time, the slinger 36
Inner peripheral lip 37 of seal ring body 37 with respect to inner surface 36c
If the contact pressure of b is reduced, muddy water or the like easily enters the lip sliding contact portion, which may cause damage to the lip 37b. If the lip 37b is damaged, muddy water or the like will enter the inside of the bearing, and the bearing life will be shortened. For this reason, in the conventional sealing device 34, the inner peripheral lip 37
b cannot be reduced, and since the slinger 36 with which the inner lip 37b is in sliding contact is made of stainless steel, the sliding resistance of the inner lip 37b is inevitably large, and the torque is reduced while maintaining the sealing performance. It was difficult to plan.
【０００４】この発明は、車軸用軸受の密封装置におい
て、密封性を維持しながら低トルク化を図ることを目的
とする。[0004] It is an object of the present invention to reduce the torque while maintaining the sealing performance in a sealing device for an axle bearing.
【０００５】[0005]
【課題を解決するための手段】上記課題を解決するため
の手段として、請求項１の発明では、固定側外輪部材
と、回転側内輪部材と、内外輪部材間に介装される転動
体とを有し、内外輪部材間を密封する密封装置が外輪部
材端部側に装着された車軸用軸受の密封装置において、
上記密封装置が、内輪部材外周面に固定される円筒部お
よびこの円筒部の軸受外部側端部から外輪部材に向かっ
て径方向に延びるフランジとから形成される断面Ｌ形の
スリンガーと、外輪部材内周面に固定される円筒部と上
記スリンガー内面に摺接する内周リップが形成されたシ
ール環体とからなり、上記スリンガーの少なくとも内周
リップ摺接面に摩擦低減被膜が形成されていることを特
徴とする。According to the first aspect of the present invention, there is provided a stationary outer ring member, a rotating inner ring member, and a rolling element interposed between the inner and outer ring members. A sealing device for axle bearings, wherein a sealing device for sealing between the inner and outer ring members is mounted on the outer ring member end side.
A slinger having an L-shaped cross section, the sealing device comprising: a cylindrical portion fixed to the outer peripheral surface of the inner ring member; and a flange radially extending from the bearing outer end of the cylindrical portion toward the outer ring member. A cylindrical portion fixed to the inner peripheral surface and a seal ring body having an inner peripheral lip that slides on the inner surface of the slinger, and a friction reducing coating is formed on at least the inner peripheral lip sliding contact surface of the slinger. It is characterized by.
【０００６】また、請求項２の発明では、上記摩擦低減
被膜が、ポリテトラフルオロエチレン、ポリエチレン、
ポリアミド等の低摩擦性の合成樹脂膜より形成されてい
ることを特徴とする。Further, in the invention of claim 2, the friction-reducing coating is made of polytetrafluoroethylene, polyethylene,
It is characterized by being formed from a low friction synthetic resin film such as polyamide.
【０００７】さらにまた、請求項３の発明では、上記摩
擦低減被膜が、ダイヤモンドライクカーボン膜より形成
されていることを特徴とする。Further, in the invention of claim 3, the friction reducing film is formed of a diamond-like carbon film.
【０００８】[0008]
【発明の実施の形態】以下、この発明の具体的な実施の
形態について説明する。図１および図２はこの発明の一
実施形態である。図示しない車体に取り付けられるフラ
ンジ６が形成された固定側外輪部材５と、図示しない車
輪が取り付けられるフランジ３が形成されたハブ部材２
と該ハブ部材２の端部に嵌合固定された内輪４とからな
る回転側内輪部材１と、内外輪部材１，５間に介装され
保持器８で保持される転動体７とを有し、内外輪部材
１，５間を密封する密封装置９，１０が外輪部材５の両
端部５ａ，５ｂ側に装着されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described. 1 and 2 show an embodiment of the present invention. A stationary outer ring member 5 having a flange 6 attached to a vehicle body (not shown), and a hub member 2 having a flange 3 attached to a wheel not shown.
A rotating inner ring member 1 comprising an inner ring 4 fitted and fixed to an end of the hub member 2 and a rolling element 7 interposed between the inner and outer ring members 1 and 5 and held by a retainer 8. Sealing devices 9 and 10 for sealing between the inner and outer ring members 1 and 5 are mounted on both ends 5 a and 5 b of the outer ring member 5.
【０００９】この車体内部側の外輪部材５端部５ａに装
着された密封装置９は、内輪４の外周面４ａに固定され
る円筒部１２およびこの円筒部１２の軸受外部側端部か
ら外輪部材５に向かって径方向に延びるフランジ１３と
から形成される断面Ｌ形のスリンガー１１と、外輪部材
５の内周面５ａに固定されるシール環体１４とから形成
されている。またこのシール環体１４は、スリンガー１
１のフランジ１３外周面１３ａにラビリンス隙間２１に
て対向するよう外輪部材５に固定される円筒部１６とこ
の円筒部１６の軸受内部側端部からスリンガー１１のフ
ランジ１３内側面１３ｂに対向しながらスリンガー１１
の円筒部１２外周面１２ａに向かうフランジ１７とから
なる断面Ｌ形の芯金１５と、この芯金１５のフランジ１
７内周部に設けられスリンガー１１の内面に摺接する複
数の内周リップ１８，１９，２０とから形成されてい
る。この複数の内周リップ１８，１９，２０は、詳しく
は、三重リップとされ、中央の主リップ１８および軸受
内側の補助リップ１９がスリンガー１１の円筒部１２の
外周面１２ａに摺接させられ、軸受外側のサイド補助リ
ップ２０がスリンガー１１のフランジ１３の内側面１３
ｂに摺接させられている。The sealing device 9 mounted on the end portion 5a of the outer ring member 5 on the inner side of the vehicle body includes a cylindrical portion 12 fixed to the outer peripheral surface 4a of the inner ring 4 and an outer ring member from the outer end of the cylindrical portion 12 on the bearing side. A slinger 11 having an L-shaped cross section is formed by a flange 13 extending radially toward 5, and a seal ring 14 fixed to the inner peripheral surface 5 a of the outer ring member 5. The seal ring 14 is used for the slinger 1.
The cylindrical portion 16 fixed to the outer race member 5 so as to face the outer peripheral surface 13a of the first flange 13 at the labyrinth gap 21 and the inner surface 13b of the flange 13 of the slinger 11 from the inner end of the cylindrical portion 16 inside the bearing. Slinger 11
And a flange 17 facing the outer peripheral surface 12a of the cylindrical portion 12 having an L-shaped cross section.
7 are formed on the inner peripheral portion of the slinger 11 and a plurality of inner peripheral lips 18, 19, 20 that are in sliding contact with the inner surface of the slinger 11. More specifically, the plurality of inner peripheral lips 18, 19, and 20 are triple lips, and the central main lip 18 and the auxiliary lip 19 inside the bearing are slid on the outer peripheral surface 12a of the cylindrical portion 12 of the slinger 11. The side auxiliary lip 20 on the outer side of the bearing is the inner surface 13 of the flange 13 of the slinger 11.
b.
【００１０】また、上記スリンガー１１の全表面には、
内周リップの摺接抵抗が低減される摩擦低減被膜２２が
形成されている。Further, on the entire surface of the slinger 11,
A friction reducing film 22 for reducing the sliding contact resistance of the inner peripheral lip is formed.
【００１１】この摩擦低減被膜２２としては、６ナイロ
ンや１２ナイロン等のポリアミド、ポリテトラフルオロ
エチレン、ポリエチレン等の低摩擦性の合成樹脂膜より
形成される。この摩擦低減被膜２２としての合成樹脂膜
は、スリンガー１１に対し、流動浸せきや粉体塗装等の
処理にて形成する。なお、この合成樹脂膜は、安価で処
理が容易である点で有利である。The friction reducing film 22 is formed of a low friction synthetic resin film such as polyamide such as 6 nylon or 12 nylon, or polytetrafluoroethylene or polyethylene. The synthetic resin film as the friction reducing film 22 is formed on the slinger 11 by a process such as fluid immersion or powder coating. This synthetic resin film is advantageous in that it is inexpensive and easy to process.
【００１２】また、上記摩擦低減被膜２２としては、硬
質で潤滑性に優れたダイヤモンドライクカーボン膜によ
り形成されてもよい。この摩擦低減被膜２２としてのダ
イヤモンドライクカーボン膜は、スリンガー１１に対
し、ＣＶＤ法、プラズマＣＶＤ法、イオンビーム法、イ
オン化学蒸着法などにより形成される。このダイヤモン
ドライクカーボン膜は、従来より周知であり例えば特開
平９−１４４７６４にて知られる。The friction reducing film 22 may be formed of a diamond-like carbon film which is hard and has excellent lubricity. The diamond-like carbon film as the friction reducing film 22 is formed on the slinger 11 by a CVD method, a plasma CVD method, an ion beam method, an ion chemical vapor deposition method, or the like. This diamond-like carbon film is conventionally known, and is known, for example, from Japanese Patent Application Laid-Open No. 9-147664.
【００１３】なお、上記摩擦低減被膜２２はスリンガー
１１の全表面に形成しているが、これは軸受外部に対す
る耐食性という点で有利である。しかし、スリンガー１
１の材料選定により、少なくとも内周リップ１８，１
９，２０が摺接するスリンガー１１内面に形成すればよ
いものである。The friction reducing coating 22 is formed on the entire surface of the slinger 11, which is advantageous in terms of corrosion resistance to the outside of the bearing. But Slinger 1
1 material selection, at least the inner peripheral lip 18,1
What is necessary is just to form on the inner surface of the slinger 11 where 9 and 20 are in sliding contact.
【００１４】上述したように、上記スリンガー１１の少
なくともシール環体１４の内周リップ１８，１９，２０
が摺接する部分に摩擦低減被膜２２を形成することによ
り、内周リップ１８，１９，２０の接触圧を低下させる
ことなく摺動抵抗が小さくなり、回転トルクが小さくな
る。さらに、スリンガー１１と内周リップ１８，１９，
２０との低摩擦によりリップ摺動部の発熱が抑制され内
周リップ１８，１９，２０の耐久性が向上する。さらに
は、リップ摺接部での潤滑状態が悪くなった場合でも、
潤滑が確保され、リップの摩耗が低減される。As described above, at least the inner peripheral lips 18, 19, 20 of the seal ring 14 of the slinger 11 are provided.
By forming the friction-reducing coating 22 at the portion where the sliding contact occurs, the sliding resistance is reduced without lowering the contact pressure of the inner peripheral lips 18, 19, 20 and the rotational torque is reduced. Furthermore, the slinger 11 and the inner lips 18, 19,
Due to the low friction with the lip 20, the heat generation of the lip sliding portion is suppressed, and the durability of the inner peripheral lips 18, 19, 20 is improved. Furthermore, even if the lubrication condition at the lip
Lubrication is ensured and lip wear is reduced.
【００１５】[0015]
【発明の効果】この発明の請求項１における車軸用軸受
の密封装置では、スリンガーの少なくともシール環体の
内周リップ摺接面に摩擦低減被膜を形成したため、スリ
ンガーの内面と摺接するシール環体の内周リップの接触
圧を低減せずに摩擦を減少させることが可能となる。こ
の結果、密封装置の密封性を維持しながら低トルク化が
図れる。In the axle bearing sealing device according to the first aspect of the present invention, since the friction reducing film is formed on at least the inner peripheral lip sliding contact surface of the seal ring of the slinger, the seal ring slides on the inner surface of the slinger. It is possible to reduce friction without reducing the contact pressure of the inner peripheral lip. As a result, the torque can be reduced while maintaining the sealing performance of the sealing device.
【００１６】また、請求項２における発明では、摩擦低
減被膜を低摩擦性の合成樹脂膜により形成しているが、
安価で被膜処理が容易である点で有利である。According to the second aspect of the present invention, the friction reducing film is formed of a low friction synthetic resin film.
This is advantageous in that it is inexpensive and easy to coat.
【００１７】さらにまた、請求項３における発明では、
摩擦低減被膜をダイヤモンドライクカーボン膜により形
成しているが、硬質で潤滑性に優れている点で有利であ
る。Further, in the invention according to claim 3,
Although the friction reducing film is formed of a diamond-like carbon film, it is advantageous in that it is hard and has excellent lubricity.
【図１】本発明の車軸用軸受の密封装置の断面図であ
る。FIG. 1 is a sectional view of an axle bearing sealing device according to the present invention.
【図２】本発明の密封装置の拡大断面図である。FIG. 2 is an enlarged sectional view of the sealing device of the present invention.
【図３】従来の車軸用軸受の密封装置の断面図である。FIG. 3 is a cross-sectional view of a conventional axle bearing sealing device.
【図４】従来の密封装置の拡大断面図である。FIG. 4 is an enlarged sectional view of a conventional sealing device.
１ 内輪部材 ２ ハブ部材 ３ フランジ ４ 内輪 ５ 外輪部材 ６ フランジ ７ 転動体 ８ 保持器 ９ 密封装置 １０ 密封装置 １１ スリンガー １２ 円筒部 １３ フランジ １４ シール環体 １５ 芯金 １６ 円筒部 １７ フランジ １８ 主リップ １９ 補助リップ ２０ サイド補助リップ ２１ ラビリンス隙間 ２２ 摩擦低減被膜 DESCRIPTION OF SYMBOLS 1 Inner ring member 2 Hub member 3 Flange 4 Inner ring 5 Outer ring member 6 Flange 7 Rolling element 8 Cage 9 Sealing device 10 Sealing device 11 Slinger 12 Cylindrical part 13 Flange 14 Seal ring 15 Core metal 16 Cylindrical part 17 Flange 18 Main lip 19 Auxiliary lip 20 Side auxiliary lip 21 Labyrinth gap 22 Friction reducing coating
───────────────────────────────────────────────────── フロントページの続き (72)発明者 中川 智喬 大阪市中央区南船場三丁目５番８号 光洋 精工株式会社内 (72)発明者 北畑 浩二 大阪市中央区南船場三丁目５番８号 光洋 精工株式会社内 Ｆターム(参考） 3J016 AA02 BB03 BB16 CA02 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tomotaka Nakagawa 3-5-8 Minamisenba, Chuo-ku, Osaka-shi Inside Koyo Seiko Co., Ltd. (72) Inventor Koji Kitahata 3-5-8 Minamisenba, Chuo-ku, Osaka-shi Seiko Co., Ltd. F-term (reference) 3J016 AA02 BB03 BB16 CA02
Claims (3)
内外輪部材間に介装される転動体とを有し、内外輪部材
間を密封する密封装置が外輪部材端部側に装着された車
軸用軸受の密封装置において、上記密封装置が、内輪部
材外周面に固定される円筒部およびこの円筒部の軸受外
部側端部から外輪部材に向かって径方向に延びるフラン
ジとから形成される断面Ｌ形のスリンガーと、外輪部材
内周面に固定される円筒部と上記スリンガー内面に摺接
する内周リップが形成されたシール環体とからなり、上
記スリンガーの少なくとも内周リップ摺接面に摩擦低減
被膜が形成されていることを特徴とする車軸用軸受の密
封装置。A fixed outer ring member, a rotating inner ring member,
A rolling element interposed between the inner and outer ring members, and a sealing device for axle bearings, wherein a sealing device for sealing between the inner and outer ring members is mounted on an end portion side of the outer ring member. A slinger having an L-shaped cross section formed from a cylindrical portion fixed to the outer peripheral surface and a flange extending radially from the outer end of the cylindrical portion toward the outer ring member, and fixed to the inner peripheral surface of the outer ring member. A bearing for an axle, comprising a cylindrical portion and a seal ring having an inner peripheral lip formed on the inner surface of the slinger so as to be in sliding contact with the inner surface of the slinger. Sealing device.
ロエチレン、ポリエチレン、ポリアミド等の低摩擦性の
合成樹脂膜より形成されていることを特徴とする請求項
１に記載の車軸用軸受の密封装置。2. The axle bearing sealing device according to claim 1, wherein the friction reducing film is formed of a low friction synthetic resin film such as polytetrafluoroethylene, polyethylene, or polyamide. .
クカーボン膜より形成されていることを特徴とする請求
項１に記載の車軸用軸受の密封装置。3. The axle bearing sealing device according to claim 1, wherein the friction reducing film is formed of a diamond-like carbon film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001023082A JP2002227856A (en) | 2001-01-31 | 2001-01-31 | Seal device of bearing for axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001023082A JP2002227856A (en) | 2001-01-31 | 2001-01-31 | Seal device of bearing for axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002227856A true JP2002227856A (en) | 2002-08-14 |
Family
ID=18888409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001023082A Pending JP2002227856A (en) | 2001-01-31 | 2001-01-31 | Seal device of bearing for axle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002227856A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007332990A (en) * | 2006-06-12 | 2007-12-27 | Koyo Sealing Techno Co Ltd | Sealing device |
| JP2009180366A (en) * | 2008-02-01 | 2009-08-13 | Ntn Corp | Wheel bearing device |
| WO2012172954A1 (en) * | 2011-06-13 | 2012-12-20 | 本田技研工業株式会社 | Sealing device for axle bearing |
| US11274704B2 (en) * | 2018-01-15 | 2022-03-15 | Audi Ag | Sealing arrangement for a wheel bearing arrangement of a motor vehicle |
| KR102720630B1 (en) * | 2024-03-18 | 2024-10-23 | (주)진양오일씰 | Sealing assembly and slinger surface treatment method of sealing assembly |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6077852U (en) * | 1983-11-04 | 1985-05-30 | 日本精工株式会社 | Contact type sealing device |
| JPH0335370U (en) * | 1989-08-18 | 1991-04-05 | ||
| JPH0422654U (en) * | 1990-06-15 | 1992-02-25 | ||
| JPH07174147A (en) * | 1993-12-22 | 1995-07-11 | Koyo Seiko Co Ltd | Seal device for bearing |
| JPH09166148A (en) * | 1995-12-14 | 1997-06-24 | Sudou Seisakusho:Kk | bearing |
| JPH1137300A (en) * | 1997-07-15 | 1999-02-12 | Eagle Ind Co Ltd | Shaft sealing device |
-
2001
- 2001-01-31 JP JP2001023082A patent/JP2002227856A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6077852U (en) * | 1983-11-04 | 1985-05-30 | 日本精工株式会社 | Contact type sealing device |
| JPH0335370U (en) * | 1989-08-18 | 1991-04-05 | ||
| JPH0422654U (en) * | 1990-06-15 | 1992-02-25 | ||
| JPH07174147A (en) * | 1993-12-22 | 1995-07-11 | Koyo Seiko Co Ltd | Seal device for bearing |
| JPH09166148A (en) * | 1995-12-14 | 1997-06-24 | Sudou Seisakusho:Kk | bearing |
| JPH1137300A (en) * | 1997-07-15 | 1999-02-12 | Eagle Ind Co Ltd | Shaft sealing device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007332990A (en) * | 2006-06-12 | 2007-12-27 | Koyo Sealing Techno Co Ltd | Sealing device |
| JP2009180366A (en) * | 2008-02-01 | 2009-08-13 | Ntn Corp | Wheel bearing device |
| WO2012172954A1 (en) * | 2011-06-13 | 2012-12-20 | 本田技研工業株式会社 | Sealing device for axle bearing |
| JP5560374B2 (en) * | 2011-06-13 | 2014-07-23 | 本田技研工業株式会社 | Sealing device for bearing |
| US8894289B2 (en) | 2011-06-13 | 2014-11-25 | Honda Motor Co., Ltd. | Sealing device for axle bearing |
| US11274704B2 (en) * | 2018-01-15 | 2022-03-15 | Audi Ag | Sealing arrangement for a wheel bearing arrangement of a motor vehicle |
| KR102720630B1 (en) * | 2024-03-18 | 2024-10-23 | (주)진양오일씰 | Sealing assembly and slinger surface treatment method of sealing assembly |
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