JP2014001803A - Sealing device - Google Patents

Sealing device Download PDF

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JP2014001803A
JP2014001803A JP2012137668A JP2012137668A JP2014001803A JP 2014001803 A JP2014001803 A JP 2014001803A JP 2012137668 A JP2012137668 A JP 2012137668A JP 2012137668 A JP2012137668 A JP 2012137668A JP 2014001803 A JP2014001803 A JP 2014001803A
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Prior art keywords
sealing device
peripheral surface
cylindrical portion
sleeve member
shaft member
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Japanese (ja)
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Koji Saza
孝治 佐座
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Nok Corp
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Nok Corp
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    • 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

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  • Sealing Of Bearings (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a sealing device in which infiltration of water in a fitting part of a sleeve member can be prevented, life of a bearing can be prolonged, the problem of dropping or moving the sleeve member does not occur, adverse influences upon a seal lip caused by deformation in fitting the sleeve member are suppressed and thermal influences upon the seal lip are reduced.SOLUTION: The sealing device comprises: a housing; a shaft member; a sleeve member which is fitted and fixed to an outer peripheral surface of the shaft member; and a seal member which is fitted and fixed to an inner peripheral surface of the housing and slides with the sleeve member for sealing. In the sealing device, the sleeve member includes a second cylindrical part which is concentrically returned from one end in an axial direction inside of a first cylindrical part while keeping a fixed interval with an inner peripheral surface of the first cylindrical part. The second cylindrical part is fitted and fixed to the outer peripheral surface of the shaft member and in a distal end portion outside of the second cylindrical part, a gasket member made of an elastic material is provided while being sealed in contact with the shaft member.

Description

本発明は、密封装置に関するものであり、更に詳しくは、自動車等の車輪の回転速度を検出する回転速度センサ内臓軸受装置に用いられる密封装置に関するものである。   The present invention relates to a sealing device, and more particularly to a sealing device used in a rotational speed sensor built-in bearing device that detects the rotational speed of a wheel of an automobile or the like.

従来、図４に示す密封装置が知られている。
すなわち、転動体を介して回転する軸部材２００およびハウジング１００間にシール部材４００を設けた車輪用軸受において、密封装置にエンコーダ３５０を一体化させたものが提案されている。 Conventionally, a sealing device shown in FIG. 4 is known.
That is, in the wheel bearing in which the seal member 400 is provided between the shaft member 200 that rotates via the rolling element and the housing 100, an encoder 350 integrated with the sealing device has been proposed.

シール部材４００は、断面Ｌ字状のスリーブ部材３００の内側Ｙ（図上左側）に存在し、このスリーブ部材３００の円筒状部３１０及びこの円筒状部３１０の軸方向一端から径方向外方に伸びるフランジ部３４０に弾性接触しているシールリップ４１０を備えている。
そして、スリーブ部材３００の円筒状部３１０は、軸部材２００の外周面に嵌合固定されている。
また、フランジ部３４０の外側Ｘ（図上右側）には、磁性体粉が混入された弾性部材製のエンコーダ３５０が一体的に設けられている。 The seal member 400 is present on the inner side Y (left side in the drawing) of the sleeve member 300 having an L-shaped cross section, and radially outward from the cylindrical portion 310 of the sleeve member 300 and one axial end of the cylindrical portion 310. A sealing lip 410 is provided in elastic contact with the extending flange portion 340.
The cylindrical portion 310 of the sleeve member 300 is fitted and fixed to the outer peripheral surface of the shaft member 200.
In addition, an encoder 350 made of an elastic member mixed with magnetic powder is integrally provided on the outer side X (right side in the drawing) of the flange portion 340.

しかし、スリーブ部材３００の円筒状部３１０は、軸部材２００の外周面に嵌合固定されているが、その嵌合部から微量の水が軸受内部Ｙ側へ浸入する恐れがある。
このような水の浸入が生じると、内部Ｙ側に存在する金属材であるスリーブ部材３００等に錆が発生し、シールリップ４１０の早期の摩耗が生じる問題を惹起した。
また、内部のグリースが劣化し、軸受寿命が低下する問題も招来した。 However, although the cylindrical portion 310 of the sleeve member 300 is fitted and fixed to the outer peripheral surface of the shaft member 200, a small amount of water may enter the bearing inside Y side from the fitting portion.
When such water intrusion occurs, rust is generated in the sleeve member 300 or the like, which is a metal material present on the inner Y side, causing a problem that premature wear of the seal lip 410 occurs.
In addition, the internal grease deteriorated and the bearing life was reduced.

更に、スリーブ部材３００の嵌合力を高める為には、スリーブ部材３００を軸部材２００の外周面に強い力で押し込む必要がある為、スリーブ部材３００が変形し、シールリップ４１０との良好な接触状態が得られない危険が有った。   Further, in order to increase the fitting force of the sleeve member 300, it is necessary to push the sleeve member 300 into the outer peripheral surface of the shaft member 200 with a strong force, so that the sleeve member 300 is deformed and is in good contact with the seal lip 410. There was a danger that could not be obtained.

更にまた、シールリップ４１０が密封摺動するスリーブ部材３００の円筒状部３１０は、軸部材２００の外周面に直接嵌合固定されている為、シールリップ４１０の摺動熱が外側Ｘへ発散され難いばかりでなく、軸部材２側の熱が直接円筒状部３１０に伝わる為、シールリップ４１０が早期に熱劣化する問題も惹起した。   Furthermore, the cylindrical portion 310 of the sleeve member 300 on which the seal lip 410 seals and slides is directly fitted and fixed to the outer peripheral surface of the shaft member 200, so that the sliding heat of the seal lip 410 is dissipated to the outside X. Not only is this difficult, but the heat on the shaft member 2 side is directly transmitted to the cylindrical portion 310, which causes a problem that the seal lip 410 is quickly deteriorated by heat.

上記した、従来技術の対策案として、図５に示す密封装置が提案された。（特許文献１）
図４に示した密封装置と大きく相違する点は、フランジ部３４０の外側Ｘに設けた磁性体粉が混入された弾性部材製のエンコーダ３５０から一体的に伸びるガスケット部材３３０が一体的に設けられ、このガスケット部材３３０が軸部材２００の外周面に弾性接触している点である。 A sealing device shown in FIG. 5 has been proposed as a countermeasure plan for the above-described prior art. (Patent Document 1)
A significant difference from the sealing device shown in FIG. 4 is that a gasket member 330 that integrally extends from an encoder 350 made of an elastic member mixed with magnetic powder provided on the outer side X of the flange portion 340 is integrally provided. The gasket member 330 is in elastic contact with the outer peripheral surface of the shaft member 200.

確かにガスケット部材３３０を設ける事により、円筒状部３１０の嵌合部から微量の水が軸受内部Ｙ側へ浸入する恐れは無くなったが、スリーブ部材３００が変形し、シールリップ４１０との良好な接触状態が得られない危険性及びシールリップ４１０の摺動熱が外側Ｘへ発散され難いばかりでなく、軸部材２側の熱が直接円筒状部３１０に伝わる為、シールリップ４１０が早期に熱劣化する問題を解決する事が出来なかった。   Certainly, the provision of the gasket member 330 eliminates the possibility of a small amount of water entering the Y side of the bearing from the fitting portion of the cylindrical portion 310. However, the sleeve member 300 is deformed, and the seal lip 410 is excellent. The danger that the contact state cannot be obtained and the sliding heat of the seal lip 410 are not easily dissipated to the outside X, but the heat on the shaft member 2 side is directly transmitted to the cylindrical portion 310, so the seal lip 410 is heated quickly. The problem of deteriorating could not be solved.

更に、従来技術の対策案として、図６に示す密封装置が提案された。
図４に示した密封装置と大きく相違する点は、スリーブ部材３００の円筒状部３１０の内周面に弾性材製コーティング層３６０を設け、円筒状部３１０と軸部材の外周面との嵌合部から微量の水が軸受内部Ｙ側へ浸入する問題を解消する提案がなされた。 Furthermore, a sealing device shown in FIG. 6 has been proposed as a countermeasure for the prior art.
A significant difference from the sealing device shown in FIG. 4 is that an elastic material coating layer 360 is provided on the inner peripheral surface of the cylindrical portion 310 of the sleeve member 300, and the cylindrical portion 310 and the outer peripheral surface of the shaft member are fitted to each other. A proposal has been made to eliminate the problem that a small amount of water enters the Y side of the bearing from the portion.

しかし、弾性材製コーティング層３６０を形成すると、嵌合力が不足し、スリーブ部材３００の抜けや、スリーブ部材３００の内側Ｙ（軸受内）への移動が生じる恐れがあった。   However, when the coating layer 360 made of an elastic material is formed, the fitting force is insufficient, and there is a possibility that the sleeve member 300 is detached or moved to the inner side Y (inside the bearing) of the sleeve member 300.

特開２００７−１８７３１９号公報JP 2007-187319 A

そこで、本発明が前述の状況に鑑み、スリーブ部材の嵌合部における水の浸入が防止できて、軸受寿命の向上が図れ、スリーブ部材の抜けや移動の問題が生じず、かつスリーブ部材を嵌合する際の変形によるシールリップへの悪影響を抑えると共に、シールリップへの熱的影響を少なくした密封装置を提供することを目的としている。   Therefore, in view of the above-described situation, the present invention can prevent water from entering the fitting portion of the sleeve member, improve the bearing life, prevent the sleeve member from coming off and moving, and fit the sleeve member. An object of the present invention is to provide a sealing device that suppresses adverse effects on the seal lip due to deformation at the time of joining and reduces the thermal influence on the seal lip.

上記目的を達成するために本発明にあっては、ハウジングと、前記ハウジングの内周側に挿入された状態で回転する軸部材と、前記軸部材の外周面に嵌合固定された断面Ｌ字状のスリーブ部材と、前記ハウジングの内周面に嵌着固定されて前記スリーブ部材と密封摺動する弾性材製シールリップ部を備えたシール部材とより成る密封装置において、前記スリーブ部材が、その第１の円筒状部の内側の軸方向一端から、前記第１の円筒状部の内周面と一定の間隙を有して同心状に折り返された第２の円筒状部を有すると共に、前記第２の円筒状部が前記軸部材の外周面に嵌合固定されると共に、前記第２の円筒状部の外側の先端部に前記軸部材と密封接触している弾性材製ガスケット部材を設けたことを特徴とする。   In order to achieve the above object, according to the present invention, a housing, a shaft member that rotates while being inserted into the inner peripheral side of the housing, and an L-shaped cross section that is fitted and fixed to the outer peripheral surface of the shaft member And a sealing member having a sealing lip portion made of an elastic material that is fitted and fixed to the inner peripheral surface of the housing and slidingly slides on the sleeve member. A second cylindrical portion that is concentrically folded from an inner axial end of the first cylindrical portion with a constant gap from the inner peripheral surface of the first cylindrical portion; The second cylindrical portion is fitted and fixed to the outer peripheral surface of the shaft member, and a gasket member made of an elastic material that is in sealing contact with the shaft member is provided at the outer end portion of the second cylindrical portion. It is characterized by that.

本発明は、以下に記載されるような効果を奏する。
請求項１記載の発明の密封装置によれば、スリーブ部材が、その第１の円筒状部の内側の軸方向一端から、第１の円筒状部の内周面と一定の間隙を有して同心状に折り返された第２の円筒状部を有すると共に、第２の円筒状部が軸部材の外周面に嵌合固定されると共に、第２の円筒状部の外側の先端部に軸部材と密封接触している弾性材製ガスケット部材を設ける構成としている為、スリーブ部材の嵌合部における水の浸入が防止できて、軸受寿命の向上が図れ、スリーブ部材の抜けや移動の問題が生じず、かつスリーブ部材を嵌合する際の変形によるシールリップ部への悪影響を抑えると共に、シールリップ部への熱的影響を少なくすることが出来る。
また、請求項２記載の発明の密封装置によれば、第２の円筒状部の外側先端部が、径方向内側に折り曲げられ、軸部材に設けた第１の環状段部に当接すると共に、ガスケット部材が第１の環状段部の外周面に接する構成としている為、スリーブ部材の位置決めが正確に行える結果、良好なシール性能が維持出来る。 The present invention has the following effects.
According to the sealing device of the first aspect of the present invention, the sleeve member has a certain gap from the inner circumferential surface of the first cylindrical portion from one end in the axial direction inside the first cylindrical portion. The second cylindrical portion is concentrically folded, the second cylindrical portion is fitted and fixed to the outer peripheral surface of the shaft member, and the shaft member is attached to the outer end portion of the second cylindrical portion. Since the gasket member made of an elastic material that is in sealing contact with the sleeve is provided, water can be prevented from entering the fitting portion of the sleeve member, the bearing life can be improved, and the sleeve member can be detached or moved. In addition, an adverse effect on the seal lip portion due to deformation when the sleeve member is fitted can be suppressed, and a thermal influence on the seal lip portion can be reduced.
According to the sealing device of the second aspect of the present invention, the outer front end portion of the second cylindrical portion is bent radially inward and abuts on the first annular step provided on the shaft member, Since the gasket member is configured to be in contact with the outer peripheral surface of the first annular stepped portion, the sleeve member can be accurately positioned, so that good sealing performance can be maintained.

更に、請求項３記載の発明の密封装置によれば、スリーブ部材の径方向外側に伸びるフランジ部の外側に磁性体粉が混入された弾性材製エンコーダが一体形成されている構成としている為、回転検出用の車輪用密封装置として有用である。
また、請求項４記載の発明の密封装置によれば、エンコーダとガスケット部材が、磁性体粉が混入された弾性材で一体成形されている為、成形が容易である。 Furthermore, according to the sealing device of the invention described in claim 3, since the elastic material encoder mixed with magnetic powder is integrally formed on the outer side of the flange portion extending radially outward of the sleeve member, It is useful as a wheel sealing device for rotation detection.
Further, according to the sealing device of the invention described in claim 4, since the encoder and the gasket member are integrally formed of an elastic material mixed with magnetic powder, molding is easy.

更に、請求項５記載の発明の密封装置によれば、第２の円筒状部が、軸部材に設けた第２の環状段部の外周面に嵌合固定されている構成としている為、スリーブ部材の位置決めが正確に行える結果、良好なシール性能が維持出来る。   Furthermore, according to the sealing device of the invention described in claim 5, since the second cylindrical portion is configured to be fitted and fixed to the outer peripheral surface of the second annular step provided on the shaft member, the sleeve As a result of accurate positioning of the members, good sealing performance can be maintained.

本発明の第１の態様に係る密封装置の縦断面図。The longitudinal cross-sectional view of the sealing device which concerns on the 1st aspect of this invention. 本発明の第２の態様に係る密封装置の縦断面図。The longitudinal cross-sectional view of the sealing device which concerns on the 2nd aspect of this invention. 本発明の第３の態様に係る密封装置の縦断面図。The longitudinal cross-sectional view of the sealing device which concerns on the 3rd aspect of this invention. 従来技術に係る密封装置の縦断面図。The longitudinal cross-sectional view of the sealing device which concerns on a prior art. 従来技術に係る他の密封装置の縦断面図。The longitudinal cross-sectional view of the other sealing device which concerns on a prior art. 従来技術に係る更なる他の密封装置の縦断面図。The longitudinal cross-sectional view of the further another sealing device which concerns on a prior art.

以下、本発明を実施するための最良の形態について説明する。
図１に基づき本発明を実施するための第１の態様について説明する。 Hereinafter, the best mode for carrying out the present invention will be described.
A first mode for carrying out the present invention will be described with reference to FIG.

本発明に係る密封装置の第１の態様は、図１に示す様に、外輪に相当するハウジング１と、このハウジング１の内周側に挿入された状態で回転する内輪に相当する軸部材２と、この軸部材２の外周面に嵌合固定された断面Ｌ字状のスリーブ部材３と、ハウジング１の内周面に嵌着固定されてスリーブ部材３と密封摺動する弾性材製シールリップ部４１を備えたシール部材４とより構成されている。   As shown in FIG. 1, the first aspect of the sealing device according to the present invention is a housing 1 corresponding to an outer ring, and a shaft member 2 corresponding to an inner ring that rotates while being inserted into the inner peripheral side of the housing 1. A sleeve member 3 having an L-shaped cross section that is fitted and fixed to the outer peripheral surface of the shaft member 2, and a sealing lip made of an elastic material that is fitted and fixed to the inner peripheral surface of the housing 1 and that slides hermetically with the sleeve member 3 It is comprised from the sealing member 4 provided with the part 41. FIG.

そして、スリーブ部材３は、その第１の円筒状部３１の内側Ｙ（図上左側）の軸方向一端から、第１の円筒状部３１の内周面と一定の間隙Ｄを有して同心状に折り返された第２の円筒状部３２を有している。   The sleeve member 3 is concentric with an inner peripheral surface of the first cylindrical portion 31 and a constant gap D from one axial end of the inner side Y (left side in the drawing) of the first cylindrical portion 31. It has the 2nd cylindrical part 32 folded in the shape.

すなわち、断面Ｌ字状のスリーブ部材３の軸方向成分は、径方向外側に位置してシールリップ部４１と密封摺動する第１の円筒状部３１と、軸部材２の外周面に嵌合固定される第２の円筒状部３２の二層構造と成っている。   That is, the axial component of the sleeve member 3 having an L-shaped cross section is fitted to the outer peripheral surface of the shaft member 2 and the first cylindrical portion 31 that is located on the radially outer side and slides in a sealed manner with the seal lip portion 41. A two-layer structure of the second cylindrical portion 32 to be fixed is formed.

この様な構成としている為、スリーブ部材３の嵌合部における水の浸入が防止できて、軸受寿命の向上が図れ、スリーブ部材３の抜けや移動の問題が生じず、かつスリーブ部材３を嵌合する際の変形によるシールリップ部４１への悪影響を抑えると共に、シールリップ部４１への熱的影響を少なくすることが出来る。   With such a configuration, it is possible to prevent water from entering the fitting portion of the sleeve member 3, improve the bearing life, prevent the sleeve member 3 from coming off and moving, and fit the sleeve member 3. The adverse effect on the seal lip portion 41 due to the deformation at the time of joining can be suppressed, and the thermal influence on the seal lip portion 41 can be reduced.

更に、この第２の円筒状部３２は、外側Ｘ（図上右側）の先端部３２１に、軸部材２と密封接触している弾性材製ガスケット部材３３を一体的に設けている。
この先端部３２１は、径方向内側に折り曲げられ、軸部材２に設けた第１の環状段部２１に当接すると共に、ガスケット部材３３が第１の環状段部２１の外周面に接する構成と成っている。 Further, the second cylindrical portion 32 is integrally provided with a gasket member 33 made of an elastic material that is in sealing contact with the shaft member 2 at the distal end portion 321 of the outer side X (right side in the drawing).
The distal end portion 321 is bent radially inward and comes into contact with the first annular step portion 21 provided on the shaft member 2, and the gasket member 33 comes into contact with the outer peripheral surface of the first annular step portion 21. ing.

この為、先端部３２１と第１の環状段部２１とが当接して、軸部材２とスリーブ部材３の軸方向位置を決める為、スリーブ部材３の軸方向の位置決めが正確に行える結果、良好なシール性能が維持出来る。   For this reason, the tip portion 321 and the first annular step portion 21 come into contact with each other to determine the axial positions of the shaft member 2 and the sleeve member 3, so that the sleeve member 3 can be accurately positioned in the axial direction. Can maintain high sealing performance.

更に、第２の円筒状部３２は、軸部材２に設けた先の第１の環状段部２１よりも内側Ｙで大径の第２の環状段部２２の外周面に嵌合固定されている。
そして、この第２の円筒状部３２と第１の円筒状部３１とを接続しているＵ字状の折り曲げ部３１１が第２の環状段部２２に当接する構成としている為、スリーブ部材３の軸方向の位置決めが更に向上する結果、より良好なシール性能が発揮出来る。 Further, the second cylindrical portion 32 is fitted and fixed to the outer peripheral surface of the second annular step portion 22 having a larger diameter on the inner side Y than the first annular step portion 21 provided on the shaft member 2. Yes.
Since the U-shaped bent portion 311 connecting the second cylindrical portion 32 and the first cylindrical portion 31 is in contact with the second annular step portion 22, the sleeve member 3. As a result of further improved positioning in the axial direction, better sealing performance can be exhibited.

また、シール部材４は、断面Ｌ字状の金属材製の補強環４２の円筒状部４２１がハウジング１の内周面に嵌着固定され、補強環４２の径方向内方に伸びるフランジ部４２２はゴム状弾性材製のシールリップ部４１が一体形成されている。
そして、このシールリップ部４１は、スリーブ部材３の径方向外側に伸びるフランジ部３４の内側Ｙに弾性接触している端面シールリップ部４１と第１の円筒状部３１の外周面と弾性接触しているラジアルシールリップ部４１とを備えている。 In addition, the sealing member 4 includes a flange portion 422 that extends inward in the radial direction of the reinforcing ring 42, in which a cylindrical portion 421 of a reinforcing ring 42 made of a metal material having an L-shaped cross section is fitted and fixed to the inner peripheral surface of the housing 1. The seal lip portion 41 made of a rubber-like elastic material is integrally formed.
The seal lip portion 41 is in elastic contact with the end surface seal lip portion 41 that is in elastic contact with the inner side Y of the flange portion 34 that extends outward in the radial direction of the sleeve member 3 and the outer peripheral surface of the first cylindrical portion 31. The radial seal lip portion 41 is provided.

この事により、端面シールリップ部４１が、外側Ｘからの泥水や土砂の内側Ｙへの浸入を防ぎ、ラジアルシールリップ部４１が、内側Ｙから外側Ｘへのグリース等の潤滑剤の漏洩を防いでくれる。   As a result, the end face seal lip portion 41 prevents intrusion of muddy water and earth and sand from the outer side X into the inner side Y, and the radial seal lip portion 41 prevents leakage of lubricant such as grease from the inner side Y to the outer side X. Give me.

ついで、図２に基づき発明を実施するための第２の態様について説明する。
先に説明した第１の態様と相違する点は、スリーブ部材３の径方向外側に伸びるフランジ部３４の外側Ｘに磁性体粉が混入された弾性材製エンコーダ３５が一体形成されている点である。 Next, a second mode for carrying out the invention will be described with reference to FIG.
The difference from the first embodiment described above is that an elastic material encoder 35 mixed with magnetic powder is integrally formed on the outer side X of the flange portion 34 extending radially outward of the sleeve member 3. is there.

この様な構成としている為、静止輪（ハウジング１）に対する回転輪（軸部材２）の回転状態を検出する、回転検出用の車輪用密封装置として有用である。   Because of such a configuration, it is useful as a wheel sealing device for detecting rotation, which detects the rotation state of the rotating wheel (shaft member 2) relative to the stationary wheel (housing 1).

ついで、図３に基づき発明を実施するための第３の態様について説明する。
先に説明した第２の態様と相違する点は、エンコーダ３５とガスケット部材３３が、磁性体粉が混入された弾性材で一体成形されている点である。 Next, a third mode for carrying out the invention will be described with reference to FIG.
The difference from the second aspect described above is that the encoder 35 and the gasket member 33 are integrally formed of an elastic material mixed with magnetic powder.

この様に、エンコーダ３５とガスケット部材３３が、磁性体粉が混入された弾性材で一体成形されている為、成形が容易である。
尚、第２の円筒状部３２が、軸部材２の第２の環状段部２２の外周面に嵌合固定される際に変形したとしても、この第２の円筒状部３２と第１の円筒状部３１との間に存在する弾性材層がこの変形を吸収し、第１の円筒状部３１へ悪影響を及ぼす事は無い。 Thus, since the encoder 35 and the gasket member 33 are integrally formed of an elastic material mixed with magnetic powder, molding is easy.
Even if the second cylindrical portion 32 is deformed when fitted and fixed to the outer peripheral surface of the second annular step portion 22 of the shaft member 2, the second cylindrical portion 32 and the first cylindrical portion 32 are The elastic material layer existing between the cylindrical portion 31 absorbs this deformation and does not adversely affect the first cylindrical portion 31.

自動車等の車輪の回転速度を検出する回転速度センサ内臓軸受装置に使用される密封装置として好適に用いられる。   It is suitably used as a sealing device used in a rotation speed sensor built-in bearing device that detects the rotation speed of a wheel of an automobile or the like.

１ ハウジング
２ 軸部材
３ スリーブ部材
４ シール部材
２１ 第１の環状段部
２２ 第２の環状段部
３１ 第１の円筒状部
３２ 第２の円筒状部
３３ ガスケット部材
４１ シールリップ部
４２ 補強環
３１１Ｕ字状折り曲げ部
３２１軸方向先端部
４２１円筒状部
４２２フランジ部 DESCRIPTION OF SYMBOLS 1 Housing 2 Shaft member 3 Sleeve member 4 Seal member 21 1st cyclic | annular step part 22 2nd cyclic | annular step part 31 1st cylindrical part 32 2nd cylindrical part 33 Gasket member 41 Seal lip part 42 Reinforcement ring 311U Shaped bent portion 321 Axial tip 421 cylindrical portion 422 flange portion

Claims (5)

ハウジング（１）と、前記ハウジング（１）の内周側に挿入された状態で回転する軸部材（２）と、前記軸部材（２）の外周面に嵌合固定された断面Ｌ字状のスリーブ部材（３）と、前記ハウジング（１）の内周面に嵌着固定されて前記スリーブ部材（３）と密封摺動する弾性材製シールリップ部（４１）を備えたシール部材（４）とより成る密封装置において、
前記スリーブ部材（３）が、その第１の円筒状部（３１）の内側（Ｙ）の軸方向一端から、前記第１の円筒状部（３１）の内周面と一定の間隙（Ｄ）を有して同心状に折り返された第２の円筒状部（３２）を有すると共に、前記第２の円筒状部（３２）が前記軸部材（２）の外周面に嵌合固定されると共に、前記第２の円筒状部（３２）の外側（Ｘ）の先端部（３２１）に前記軸部材（２）と密封接触している弾性材製ガスケット部材（３３）を設けたことを特徴とする密封装置。 A housing (1), a shaft member (2) rotating in a state inserted in the inner peripheral side of the housing (1), and an L-shaped cross section fitted and fixed to the outer peripheral surface of the shaft member (2) A seal member (4) provided with a sleeve member (3) and an elastic seal lip portion (41) fitted and fixed to the inner peripheral surface of the housing (1) and slidingly sliding with the sleeve member (3) In a sealing device comprising:
The sleeve member (3) has a constant gap (D) from the inner peripheral surface of the first cylindrical portion (31) from one axial end on the inner side (Y) of the first cylindrical portion (31). And the second cylindrical portion (32) folded concentrically, and the second cylindrical portion (32) is fitted and fixed to the outer peripheral surface of the shaft member (2). An elastic material gasket member (33) in sealing contact with the shaft member (2) is provided at the outer end (X) of the second cylindrical portion (32). Sealing device. 前記先端部（３２１）が、径方向内側に折り曲げられ、前記軸部材（２）に設けた第１の環状段部（２１）に当接すると共に、前記ガスケット部材（３３）が前記第１の環状段部（２１）の外周面に接していることを特徴とする請求項１記載の密封装置。   The distal end portion (321) is bent radially inward and abuts on a first annular step (21) provided on the shaft member (2), and the gasket member (33) is in the first annular shape. The sealing device according to claim 1, wherein the sealing device is in contact with the outer peripheral surface of the stepped portion (21). 前記スリーブ部材（３）の径方向外側に伸びるフランジ部（３４）の外側（Ｘ）に磁性体粉が混入された弾性材製エンコーダ（３５）が一体形成されていることを特徴とする請求項１または２記載の密封装置。   The elastic encoder (35) mixed with magnetic powder is integrally formed on the outer side (X) of the flange portion (34) extending radially outward of the sleeve member (3). 3. The sealing device according to 1 or 2. 前記エンコーダ（３５）と前記ガスケット部材（３３）が、磁性体粉が混入された弾性材で一体成形されていることを特徴とする請求項１〜３のいずれか一項に記載の密封装置。   The sealing device according to any one of claims 1 to 3, wherein the encoder (35) and the gasket member (33) are integrally formed of an elastic material mixed with magnetic powder. 前記第２の円筒状部（３２）が、前記軸部材（２）に設けた第２の環状段部（２２）の外周面に嵌合固定されていることを特徴とする請求項１〜４のいずれか一項に記載の密封装置。   The second cylindrical portion (32) is fitted and fixed to an outer peripheral surface of a second annular step portion (22) provided on the shaft member (2). The sealing device according to any one of the above.
JP2012137668A 2012-06-19 2012-06-19 Sealing device Pending JP2014001803A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700091173A1 (en) * 2017-08-08 2019-02-08 Skf Ab LOW FRICTION SEALING COMPLEX FOR A WHEEL HUB AND WHEEL HUB ASSEMBLED GROUP WITH SUCH SEALING COMPLEX
DE102018101137A1 (en) * 2018-01-19 2019-07-25 Schaeffler Technologies AG & Co. KG sealing device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002147474A (en) * 2000-11-10 2002-05-22 Ntn Corp Wheel bearing
US20020131659A1 (en) * 2001-03-16 2002-09-19 Skf Industrie S.P.A. Sealing device for rolling bearings
JP2007009945A (en) * 2005-06-28 2007-01-18 Nsk Ltd Sealing device
JP2007187319A (en) * 2007-02-05 2007-07-26 Ntn Corp Bearing for wheel
US20080036156A1 (en) * 2004-10-12 2008-02-14 Schaeffler Kg Sealing Arrangement
JP2009250405A (en) * 2008-04-10 2009-10-29 Nsk Ltd Sealing mechanism for bearing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002147474A (en) * 2000-11-10 2002-05-22 Ntn Corp Wheel bearing
US20020131659A1 (en) * 2001-03-16 2002-09-19 Skf Industrie S.P.A. Sealing device for rolling bearings
US20080036156A1 (en) * 2004-10-12 2008-02-14 Schaeffler Kg Sealing Arrangement
JP2007009945A (en) * 2005-06-28 2007-01-18 Nsk Ltd Sealing device
JP2007187319A (en) * 2007-02-05 2007-07-26 Ntn Corp Bearing for wheel
JP2009250405A (en) * 2008-04-10 2009-10-29 Nsk Ltd Sealing mechanism for bearing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201700091173A1 (en) * 2017-08-08 2019-02-08 Skf Ab LOW FRICTION SEALING COMPLEX FOR A WHEEL HUB AND WHEEL HUB ASSEMBLED GROUP WITH SUCH SEALING COMPLEX
US10591060B2 (en) 2017-08-08 2020-03-17 Aktiebolaget Skf Low-friction sealing assembly for a wheel-hub unit and wheel-hub unit equipped with such a sealing assembly
DE102018101137A1 (en) * 2018-01-19 2019-07-25 Schaeffler Technologies AG & Co. KG sealing device

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