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JP2006038120A - Cover seal - Google Patents

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Publication number
JP2006038120A
JP2006038120A JP2004219596A JP2004219596A JP2006038120A JP 2006038120 A JP2006038120 A JP 2006038120A JP 2004219596 A JP2004219596 A JP 2004219596A JP 2004219596 A JP2004219596 A JP 2004219596A JP 2006038120 A JP2006038120 A JP 2006038120A
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JP
Japan
Prior art keywords
seal
reinforcing ring
side member
elastic
cover seal
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
Application number
JP2004219596A
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Japanese (ja)
Inventor
Kazuo Ishii
和夫 石井
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Uchiyama Manufacturing Corp
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Uchiyama Manufacturing Corp
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Filing date
Publication date
Application filed by Uchiyama Manufacturing Corp filed Critical Uchiyama Manufacturing Corp
Priority to JP2004219596A priority Critical patent/JP2006038120A/en
Publication of JP2006038120A publication Critical patent/JP2006038120A/en
Pending legal-status Critical Current

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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
    • 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
    • F16C33/7896—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members with two or more discrete sealings arranged in series
    • 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
    • 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
    • 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
    • F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Of Bearings (AREA)
  • Rolling Contact Bearings (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cover seal which can be easily mounted without scratching a fitted surface and deforming a seal and with which a seal onto a bearing part and/or a part in proximity to the bearing part is effectively made. <P>SOLUTION: A cover seal 7 which is mounted in the fixing side member 3 in order to prevent penetration of water, dust or the like into a bearing part A for relatively rotatably supporting a rotation side member 2 with respect to a fixing side member 3 and/or a part in proximity to the bearing part, is composed of a reinforcing ring 71 made of a ring-like metal wire and a seal member 72 made of elastic material which is integrally fixed onto the reinforcing ring 71. The reinforcing ring 71 has an elastic force in the diameter expanding direction and the diameter reducing direction, and can be elastically fitted to a peripheral body of the fixing side member by the elastic force. The seal member 72 made of elastic material is equipped with a elastic seal lip 72a. In a fitting state to the fixing side member of the reinforcing ring, the tip side of the seal lip 72a is brought into elastic contact or close contact with the peripheral surface of the rotation side member 2. By so doing, an opening end of the bearing part A and/or a part in proximity to the opening end are covered. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、カバーシールに係り、詳しくは自動車等の車輪懸架部における軸受部及び／若しくはその近傍部位への水や塵埃等の浸入を阻止するカバーシールに関するものである。   The present invention relates to a cover seal, and more particularly, to a cover seal that prevents intrusion of water, dust, or the like into a bearing portion and / or a vicinity thereof in a wheel suspension portion of an automobile or the like.

従来より、自動車等の車輪の軸受装置内部の相対回転部間には、転動体（玉）がリテーナで保持された状態で介装されており、また近時においては、アンチロックブレーキシステム（ＡＢＳ）やトラクションコントロールシステム（ＴＣＳ）を制御するため、回転側にトーンホイールを取着し、固定側に磁気センサを配置して、このトーンホイールと磁気センサとにより車輪の回転速度を測定検出するためのエンコーダを構成することが広く採用されている。
上記転動体の保持部に水や塵埃等が混入すると転動体の円滑な転動が損なわれ、また上記トーンホイールに、水や塵埃が付着すると回転数の検出精度が低下することがあり、更には砂粒等が衝当すれば、そのチッピング作用により傷付き、劣化して、損傷を受けることもあった。 2. Description of the Related Art Conventionally, rolling elements (balls) are interposed between relative rotating parts inside a wheel bearing device of an automobile or the like while being held by a retainer, and recently, an anti-lock brake system (ABS ) And a traction control system (TCS), a tone wheel is attached to the rotating side, a magnetic sensor is arranged on the fixed side, and the rotational speed of the wheel is measured and detected by this tone wheel and the magnetic sensor. It is widely adopted that the encoder of this type is configured.
If water or dust or the like is mixed in the holding part of the rolling element, smooth rolling of the rolling element may be impaired, and if water or dust adheres to the tone wheel, the rotational speed detection accuracy may be reduced. When sand grains hit, they were damaged, deteriorated and damaged by the chipping action.

そこで、これらの付着或いは衝当を防止する為の保護カバーやシールリングを、軸受部の近傍周辺に配置する試みがなされるようになっており、特許文献１はこのような例を示すものである。
特開平９−２１８２３号公報 Therefore, an attempt is made to arrange a protective cover and a seal ring for preventing such adhesion or collision in the vicinity of the bearing portion, and Patent Document 1 shows such an example. is there.
Japanese Patent Laid-Open No. 9-21823

上記特許文献１には、外輪の内端開口部に外嵌固定された鋼板製の保護カバーや外輪の外端内周面に内嵌固定され弾性材のみからなるシールリング等によるものが開示されている。
しかしながら、上記に示すものも含め従来からよく用いられるこのようなシール部材は、金属板からなる断面Ｌ字型の補強環とゴム等の弾性体とからなるものが知られており、これによると金属板を断面Ｌ字型にプレス成型する場合、形状・寸法精度にバラ付きが多いため、歩留りが悪く、部品コストの高騰が問題となる。
さらにこのようなシール部材を装着する際には、組付側に嵌合する時に、剛体同士の嵌め合いとなるため、嵌合面に傷を付けてしまったり、補強環が変形してしまうという問題も生じるため、嵌合をスムーズにするためには、やはり組付側の加工精度及び面精度の向上が求められる。
特に補強環は軸方向に長さがあるため、嵌合時に大きな嵌合力を要し、シールの変形を来たすこともある。 Patent Document 1 discloses a protective cover made of a steel plate that is fitted and fixed to the inner end opening of the outer ring, a seal ring that is fitted and fixed to the inner peripheral surface of the outer end of the outer ring, and is made of only an elastic material. ing.
However, such seal members that are often used in the past, including those shown above, are known to be composed of a L-shaped reinforcing ring made of a metal plate and an elastic body such as rubber. When a metal plate is press-molded into an L-shaped cross section, since the shape and dimensional accuracy vary widely, the yield is poor and the cost of parts becomes a problem.
Furthermore, when mounting such a seal member, when fitted to the assembly side, it will be a fit between rigid bodies, so that the fitting surface will be scratched or the reinforcing ring will be deformed Since a problem also arises, in order to make the fitting smooth, it is still required to improve the processing accuracy and surface accuracy on the assembly side.
In particular, since the reinforcing ring has a length in the axial direction, a large fitting force is required at the time of fitting, and the seal may be deformed.

本発明は上記問題点に鑑みなされたものであり、被嵌合面を傷付けることなく、またシールの変形を来たすことなく、容易に取付けることができ、軸受部及び／若しくはその近傍部位へのシールが効果的になされるカバーシールを提供するものである。   The present invention has been made in view of the above problems, and can be easily mounted without damaging the mating surface and without causing deformation of the seal, and seals the bearing portion and / or its vicinity. The present invention provides a cover seal that is effectively made.

上記目的を達成するために提案される請求項１では、固定側部材に対して回転側部材を相対回転可能に支持する軸受部及び／若しくはその近傍部位への水や塵埃等の浸入を阻止する為に、上記固定側部材に取付けられるカバーシールであって、円環状の金属線材からなる補強環と、該補強環に固着一体とされる弾性材製シール部材とよりなり、上記補強環は拡径及び縮径方向の弾性力を保有し、この弾性力をして前記固定側部材の周体に弾性嵌装可能とされ、一方、上記弾性材製シール部材は弾性シールリップを備え、上記補強環の固定側部材に対する嵌装状態ではこのシールリップの先端側が前記回転側部材の周面に弾接若しくは近接するようにし、これにより前記軸受部の開口端部及び／若しくはその近傍部位を覆うようにしたことを特徴とするカバーシールを提案する。   In claim 1 proposed to achieve the above-mentioned object, the intrusion of water, dust or the like into the bearing portion and / or the vicinity thereof that supports the rotating side member so as to be relatively rotatable with respect to the fixed side member is prevented. For this purpose, the cover seal is attached to the fixed side member, and includes a reinforcing ring made of an annular metal wire material and an elastic seal member integrally fixed to the reinforcing ring, and the reinforcing ring is expanded. The elastic member has elastic force in the diameter direction and the reduced diameter direction, and can be elastically fitted to the periphery of the fixed-side member by using this elastic force. On the other hand, the elastic seal member includes an elastic seal lip, and the reinforcement When the ring is fitted to the fixed side member, the front end side of the seal lip is elastically contacted or close to the peripheral surface of the rotating side member, thereby covering the opening end portion of the bearing portion and / or the vicinity thereof. Specially To propose a cover seal to be.

請求項２は、請求項１に記載のカバーシールにおいて、固定側部材の周体には周溝が形成され、上記補強環がこの周溝に弾性嵌合されるようにしたことを特徴とするカバーシールを提案する。   According to a second aspect of the present invention, in the cover seal according to the first aspect, a circumferential groove is formed in the peripheral body of the stationary member, and the reinforcing ring is elastically fitted to the circumferential groove. Propose a cover seal.

請求項３は、請求項１又は２に記載のカバーシールにおいて、上記補強環は、1箇所が切断された開環状とされ且つその切断部端面は互いに近接し、これにより拡径及び縮径方向の弾性力を保有するものであることを特徴とするカバーシールを提案する。   According to a third aspect of the present invention, in the cover seal according to the first or second aspect, the reinforcing ring is an open ring shape in which one portion is cut, and end faces of the cut portions are close to each other, thereby expanding and reducing the diameter. A cover seal characterized by possessing the elastic force of is proposed.

請求項４は、請求項１に記載のカバーシールにおいて、上記弾性材製シール部材は、ゴム材からなり、上記補強環に対して、ゴム材の加硫成形により一体固着されることを特徴とする   According to a fourth aspect of the present invention, in the cover seal according to the first aspect, the elastic sealing member is made of a rubber material, and is integrally fixed to the reinforcing ring by vulcanization molding of the rubber material. Do

請求項５は、請求項１乃至請求項４に記載のカバーシールにおいて、上記シールリップ部は、複数からなることを特徴とするカバーシールを提案する。   According to a fifth aspect of the present invention, there is provided a cover seal according to any one of the first to fourth aspects, wherein the seal lip portion comprises a plurality.

本発明に係るカバーシールによれば、軸受部及び／若しくはその近傍部位への水や塵埃等
の浸入を阻止できるので、軸受部の転動体の円滑な転動が損なわれたり、トーンホイールの傷付きや劣化を抑えることができる。またこれによれば、高度な加工精度、組付精度が不要で、コスト面においても、線材を加工するだけで補強環を製作できるため、大幅にコストアップするような懸念もない。 According to the cover seal of the present invention, water and dust can be prevented from entering the bearing portion and / or the vicinity thereof, so that the smooth rolling of the rolling element of the bearing portion is impaired, or the tone wheel is damaged. Sticking and deterioration can be suppressed. In addition, according to this, high processing accuracy and assembly accuracy are not required, and in terms of cost, a reinforcing ring can be manufactured only by processing a wire, so there is no concern of significant increase in cost.

請求項１によれば、補強環は拡径及び縮径方向の弾性力を保有し、この弾性力をして固定側部材の周体に弾性嵌装可能とするので、嵌合力が比較的小さくてもセット力があり、組付が容易である。特に、剛体同士の嵌め合いの時に生じるような、嵌合面の傷付きや変形が生じにくい。また、本発明のカバーシールは金属線材からなる補強環と弾性材製のシール部材からなる非常に軽量なもので構成可能であるので、カバーシールの取付けによる重量の増加を懸念する必要がない。   According to the first aspect of the present invention, the reinforcing ring has elastic force in the direction of expansion and contraction, and this elastic force can be elastically fitted to the periphery of the stationary member, so that the fitting force is relatively small. However, it has a set power and is easy to assemble. In particular, scratches and deformations of the fitting surface are unlikely to occur when fitting between rigid bodies. Further, since the cover seal of the present invention can be constituted by a very light one made of a reinforcing ring made of a metal wire and a seal member made of an elastic material, there is no need to worry about an increase in weight due to the attachment of the cover seal.

請求項２によれば、固定側部材の周体には補強環が弾性嵌合されるように周溝が形成されているので、加工精度を要することなく、補強環及びシール部材が所定位置に安定保持可能とされる。   According to the second aspect, since the circumferential groove is formed in the peripheral body of the fixed side member so that the reinforcing ring is elastically fitted, the reinforcing ring and the seal member are in a predetermined position without requiring processing accuracy. Stable holding is possible.

請求項３によれば、補強環は１箇所が切断され、その切断部端面は互いに近接した開環状とされているので、金属線材による補強環でありながら、拡径及び縮径方向の弾性力を保有し、この弾性力により、組付時に固定側部材を傷付けたり、補強環の変形を気にする心配がなく、組付がスムーズ且つ容易にできる。   According to the third aspect, the reinforcing ring is cut at one place, and the end surfaces of the cut portions are open to be close to each other. Due to this elastic force, the assembly can be carried out smoothly and easily without worrying about damaging the fixed member during assembly or worrying about deformation of the reinforcing ring.

請求項４によれば、上記弾性材製シール部材は、ゴム材からなり、上記補強環に対して、ゴム材の加硫成形により一体固着されるので、強固に貼着可能である。   According to a fourth aspect of the present invention, the elastic sealing member is made of a rubber material and is integrally fixed to the reinforcing ring by vulcanization molding of the rubber material, so that it can be firmly attached.

請求項５によれば、シールリップ部は複数からなるため、より一層シール性が向上する。   According to the fifth aspect, since the seal lip portion is composed of a plurality, the sealing performance is further improved.

以下、図とともに本発明の実施の形態について説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は本発明のカバーシールが採用された自動車のタイヤホイール懸架機構を示す断面図、図２は要部拡大断面図である。
図１において、１は等速ジョイント１１に連結された自動車のドライブシャフトであり、その外周にはハブ輪２１が一体嵌合され、該ハブ輪２１にはボルト２２を介して不図示のタイヤホイールが取付けられる。また、このハブ輪２１の外径面には２分割型の内輪部材２３、２４が嵌装され、ハブ輪２１とこの内輪部材２３、２４とにより回転側部材２が構成される。３は固定側部材（外輪部材）であり、車体（不図示）に一体化され、この固定側部材３と回転側部材２との間に２列の転動体（玉）４…がリテーナ４１で保持された状態で介装されている。また、両端部の上記回転側及び固定側部材２、３間には、潤滑用グリースの漏出や水・塵埃等の浸入を防止する為の環状シール部材５、６が、相互の摺接関係を維持した状態で圧入嵌装されており、これらによりアンギュラ型の玉軸受部Ａが構成される。
上記環状シール部材５、６の内の、車体側環状シール部材５の外端面には、トーンホイール８が添装されており、このトーンホイール８とこれに対向して車体側に設置された磁気センサ９とにより、タイヤホイールの回転数検出用エンコーダが構成される。該トーンホイール８は、ゴム材料に磁性粉末を混入させて成形したゴムリング体からなる磁性環であり、周方向にＳ極、Ｎ極が交互に着磁されている。 FIG. 1 is a sectional view showing a tire wheel suspension mechanism of an automobile in which the cover seal of the present invention is adopted, and FIG. 2 is an enlarged sectional view of a main part.
In FIG. 1, reference numeral 1 denotes a drive shaft of an automobile connected to a constant velocity joint 11, and a hub wheel 21 is integrally fitted to the outer periphery of the drive shaft, and a tire wheel (not shown) is connected to the hub wheel 21 via a bolt 22. Is installed. In addition, two outer ring members 23 and 24 are fitted on the outer diameter surface of the hub wheel 21, and the rotation member 2 is configured by the hub wheel 21 and the inner ring members 23 and 24. Reference numeral 3 denotes a fixed side member (outer ring member), which is integrated with a vehicle body (not shown), and two rows of rolling elements (balls) 4... Between the fixed side member 3 and the rotary side member 2 are retainers 41. It is inserted while being held. Further, between the rotating side and fixed side members 2 and 3 at both ends, annular seal members 5 and 6 for preventing leakage of lubricating grease and intrusion of water, dust and the like have a sliding contact relationship with each other. It is press-fitted and fitted in a maintained state, and an angular ball bearing portion A is constituted by these.
A tone wheel 8 is attached to the outer end surface of the vehicle body side annular seal member 5 among the annular seal members 5 and 6, and the tone wheel 8 and a magnet installed on the vehicle body side facing the tone wheel 8. The sensor 9 constitutes an encoder for detecting the rotational speed of the tire wheel. The tone wheel 8 is a magnetic ring made of a rubber ring body formed by mixing magnetic powder into a rubber material, and S poles and N poles are alternately magnetized in the circumferential direction.

固定側部材３には、円環状の金属線材からなる補強環７１と、該補強環７１に固着一体とされるシール部材７２とよりなるカバーシール７が取付けられており、シール部材７２に備えたシールリップ７２ａの先端側が回転側部材２（ハブ輪２１）の周面に弾接若しくは近接されることにより、タイヤホイールの回転運動がなされると、上記カバーシール７が軸受部Ａの開口端部及び／若しくはその近傍部位への水・塵埃等の浸入を阻止し、上記環状シール部材５、６による水・塵埃等の浸入防止効果と相俟って、より一層高いシール性が得られる。
これにより、軸受部Ａの転動体４の円滑な転動が損なわれることを防止でき、またトーンホイール８の回転数検出制度の低下及び傷付き、劣化を抑えることができる。
さらに、カバーシール７は金属線材からなる補強環７１と弾性材製のシール部材７２からなる非常に軽量なもので構成可能であるので、重量の増加を懸念する必要がない。 A cover seal 7 including a reinforcing ring 71 made of an annular metal wire and a seal member 72 fixedly integrated with the reinforcing ring 71 is attached to the fixed side member 3. When the front end side of the seal lip 72a is elastically contacted or brought close to the peripheral surface of the rotation side member 2 (hub wheel 21), the cover seal 7 is opened at the end of the bearing portion A when the tire wheel rotates. And / or water / dust etc. can be prevented from entering the vicinity thereof, and combined with the effect of preventing the water / dust etc. from permeating by the annular seal members 5, 6, higher sealing performance can be obtained.
Thereby, it can prevent that the smooth rolling of the rolling element 4 of the bearing part A is impaired, and the fall of the rotation speed detection system of the tone wheel 8, and damage and deterioration can be suppressed.
Furthermore, since the cover seal 7 can be composed of a very lightweight material comprising a reinforcing ring 71 made of a metal wire and a sealing member 72 made of an elastic material, there is no need to worry about an increase in weight.

図３（ａ）（ｂ）本発明のカバーシール７に用いられる補強環７１の平面図の一例を示す。
本発明のカバーシール７は、図３（ａ）（ｂ）に示すような補強環７１を用いるものであるので、固定側部材３の周体に補強環７１が弾性嵌合されるような周溝３ａを形成すれば、所定位置に安定保持可能とする。
図３（ａ）には、補強環７１が金属線材からなるものを示しており、線材としては、ばね性のあるステンレス鋼の線材やピアノ線等の比較的硬度の高いバネ用材料が望ましい。
またこの補強環７１は、１箇所が切断され（図３（ａ）参照）、その切断部端面７１ａは互いに近接した開環状とされているので、金属線材による補強環でありながら、拡径及び縮径方向の弾性力を保有し、この弾性力により、剛体同士の嵌め合いの時に生じるような嵌合面の傷付きや変形が生じにくく、嵌合力が比較的小さくてもセット力があり、組付がスムーズ且つ容易にできる。
また補強環７１は、図３（ｂ）に示すように金属線材をコイル状に巻いたコイルスプリング７１’を用いてもよい。この場合、コイルスプリング７１’は円環状となるように形成し、閉環状とすれば、コイルスプリング特有のバネ特性により図３（ａ）に示す補強環７１と同様に拡径及び縮径方向の弾性力を保有し、この弾性力により、剛体同士の嵌め合いの時に生じるような嵌合面の傷付きや変形が生じにくく、嵌合力が比較的小さくてもセット力があり、組付がスムーズ且つ容易にできる。
以上によれば、従来のような金属板からなる補強環のように、プレス加工により形成するものとは違うので、加工が容易で加工コストを低減することができる。
補強環７１の断面形状は円形状の他、三角形状、四角形状等の多角形状でも採用可能で特に限定されるものではないが、例えば円形状のものであれば、シール部材７２を取付ける際に取付け方向を気にせずに固着させることができる。 3A and 3B show examples of plan views of the reinforcing ring 71 used in the cover seal 7 of the present invention.
Since the cover seal 7 of the present invention uses the reinforcing ring 71 as shown in FIGS. 3A and 3B, the cover seal 7 has a circumference in which the reinforcing ring 71 is elastically fitted to the periphery of the stationary member 3. If the groove 3a is formed, it can be stably held at a predetermined position.
FIG. 3A shows a structure in which the reinforcing ring 71 is made of a metal wire. As the wire, a spring material having a relatively high hardness such as a stainless steel wire having a spring property or a piano wire is desirable.
Further, the reinforcing ring 71 is cut at one place (see FIG. 3A), and the cut end surface 71a is an open ring close to each other. It possesses elastic force in the direction of reduced diameter, and this elastic force makes it difficult to cause damage and deformation of the fitting surface that occurs when fitting between rigid bodies, and there is a setting force even if the fitting force is relatively small, Assembly is smooth and easy.
Further, as shown in FIG. 3B, the reinforcing ring 71 may be a coil spring 71 ′ in which a metal wire is wound in a coil shape. In this case, the coil spring 71 ′ is formed in an annular shape, and if closed, the coil spring 71 ′ has a spring characteristic unique to the coil spring so that the coil spring 71 ′ can be expanded and contracted in the same way as the reinforcing ring 71 shown in FIG. It possesses elastic force, and this elastic force makes it difficult for the fitting surface to be damaged or deformed when fitting between rigid bodies. Even if the fitting force is relatively small, there is a setting force and smooth assembly. And easily.
According to the above, since it differs from what is formed by press work like the reinforcement ring which consists of metal plates like the past, processing is easy and processing cost can be reduced.
The cross-sectional shape of the reinforcing ring 71 is not particularly limited and can be employed in a polygonal shape such as a triangular shape or a quadrangular shape in addition to a circular shape. For example, if the circular shape is used, when the seal member 72 is attached, It can be fixed without worrying about the mounting direction.

図４の（ａ）〜（ｃ）は、本発明のカバーシール７の種々態様を示す断面拡大図である。
本発明のカバーシール７は、上述の補強環７１とシール部材７２とよりなり、シール部材７２は弾性材で形成され、シールリップ７２ａを備えている。なお、シール部材の形状は図に示すものには限られず、一体固着される補強環７１の断面形状や弾接及び近接させる周面までの径に応じて適宜定められるものである。
補強環７１の固定側部材３に対する嵌装状態では、このシールリップ７２ａの先端側が回転側部材３の周面に弾接若しくは近接するようにし、これにより前記軸受部の開口端部及び／若しくはその近傍部位を覆うようにしている。
シール部材７２は、ＮＢＲ、Ｈ−ＮＢＲ、ＡＣＭ、ＡＥＭ、ＦＫＭなどを中心とするゴム等の弾性材が採用され、補強環７１に対して、これら弾性材の加硫成形等により一体固着される。
またシール部材７２として、弾性を有する軟プラスチック類を採用してもよく、これを射出成形し、補強環７１に一体固着する構成としてもよい。 4A to 4C are enlarged cross-sectional views showing various aspects of the cover seal 7 of the present invention.
The cover seal 7 of the present invention includes the above-described reinforcing ring 71 and a seal member 72. The seal member 72 is formed of an elastic material and includes a seal lip 72a. The shape of the sealing member is not limited to that shown in the figure, and is appropriately determined according to the cross-sectional shape of the reinforcing ring 71 that is integrally fixed, the elastic contact, and the diameter to the adjacent peripheral surface.
In a state where the reinforcing ring 71 is fitted to the fixed side member 3, the front end side of the seal lip 72 a is elastically contacted or close to the peripheral surface of the rotary side member 3. The vicinity is covered.
The seal member 72 is made of an elastic material such as rubber centered on NBR, H-NBR, ACM, AEM, FKM, etc., and is integrally fixed to the reinforcing ring 71 by vulcanization molding or the like of these elastic materials. .
Further, as the seal member 72, soft plastics having elasticity may be adopted, and this may be injection-molded and integrally fixed to the reinforcing ring 71.

ここでシールリップ部７２ａは、固定側部材３に嵌装された際に、対する回転側部材２の周面に弾接若しくは近接される程度の径を有していればよく、この形状は特に限定されず、図４（ｃ）に示されるように複数からなるものでもよい。
またシールリップ部７２ａの先端側は回転側部材２に弾接されるとしても、ホイールの回転を邪魔しない程度に軽接触される構成とする他、上述のように近接すなわち無接触としてもよい。 Here, the seal lip portion 72a only needs to have a diameter that allows the seal lip portion 72a to be elastically contacted or approached to the peripheral surface of the rotating side member 2 when the fixed side member 3 is fitted. The present invention is not limited, and it may be composed of a plurality as shown in FIG.
Further, the tip end side of the seal lip 72a may be elastically contacted with the rotation side member 2, but may be lightly contacted so as not to interfere with the rotation of the wheel, or may be close, that is, non-contact as described above.

図５には本発明のカバーシール７の別の取付け例を示した要部拡大図である。
本発明のカバーシール７の取付け例としては、図２のように、固定側部材３の外側に取付ける例に限られず、図５に示すように固定側部材３の内周面に周溝３ａを形成し、この周溝３ａに補強環７１を嵌装させることによって、カバーシール７をその内側に取付ける構成としてもよい。
図５に示す取付け例においても、補強環７１及びシール部材７２、シールリップ部７２ａの各構成等は上述の例と同様であるので、共通の部分には同一の符号を付し、説明を割愛する。 FIG. 5 is an enlarged view of a main part showing another example of attachment of the cover seal 7 of the present invention.
An example of attaching the cover seal 7 of the present invention is not limited to the example of attaching to the outside of the fixed side member 3 as shown in FIG. 2, and a peripheral groove 3a is formed on the inner peripheral surface of the fixed side member 3 as shown in FIG. It is good also as a structure which attaches the cover seal 7 to the inner side by forming and attaching the reinforcement ring 71 to this circumferential groove 3a.
Also in the mounting example shown in FIG. 5, the configuration of the reinforcing ring 71, the seal member 72, and the seal lip portion 72 a is the same as in the above-described example, so common portions are denoted by the same reference numerals and description thereof is omitted. To do.

また上記各実施形態では、カバーシール７をハブ輪２１の周面に弾接若しくは近接するように取付けた例について説明しているが、これに限られず、等速ジョイント１１側（車体側）の開口端部及び／若しくはその近傍部位を覆うように取付ける構成としてもよい。   In each of the above embodiments, the cover seal 7 is described as being attached to the peripheral surface of the hub wheel 21 so as to be elastically contacted or close thereto. However, the present invention is not limited thereto, and the constant velocity joint 11 side (vehicle body side) is not limited thereto. It is good also as a structure attached so that an opening edge part and / or its vicinity site | part may be covered.

図６は、等速ジョイント１１側に取り付けた場合の本発明のカバーシールを採用した自動車のタイヤホイール懸架機構を示す断面図である。
図６に示すようにトーンホイール８及び磁気センサ９が設けられている側にカバーシール７を取り付けた場合、これらを水や塵埃等から保護する機能も奏するので、トーンホイール８の傷付きや劣化を抑えることができる。また、トーンホイール８と磁気センサ９とにより車輪の回転速度を検出するエンコーダを構成しているので、水や塵埃の浸入によるエンコーダとしての回転数の検出精度の低下を防止することができる。 FIG. 6 is a cross-sectional view showing a tire wheel suspension mechanism of an automobile employing the cover seal of the present invention when attached to the constant velocity joint 11 side.
When the cover seal 7 is attached to the side on which the tone wheel 8 and the magnetic sensor 9 are provided as shown in FIG. 6, the tone wheel 8 is also damaged or deteriorated because it also functions to protect these from the water and dust. Can be suppressed. In addition, since the tone wheel 8 and the magnetic sensor 9 constitute an encoder that detects the rotational speed of the wheel, it is possible to prevent a decrease in the rotational speed detection accuracy of the encoder due to the ingress of water or dust.

本発明のカバーシールが採用された自動車のタイヤホイール懸架機構を示す断面図である。It is sectional drawing which shows the tire wheel suspension mechanism of the motor vehicle by which the cover seal | sticker of this invention was employ | adopted. 本発明のカバーシールの取付け例を示す要部拡大図である。It is a principal part enlarged view which shows the example of attachment of the cover seal | sticker of this invention. （ａ）（ｂ）本発明に採用される補強環の平面図である。(A) (b) It is a top view of the reinforcement ring employ | adopted as this invention. （ａ）〜（ｃ）本発明のカバーシールの種々の態様を示す断面拡大図である。(A)-(c) It is a cross-sectional enlarged view which shows the various aspects of the cover seal of this invention. 本発明のカバーシールの別の取付け例を示す要部拡大図である。It is a principal part enlarged view which shows another example of attachment of the cover seal | sticker of this invention. 本発明のカバーシールが採用された自動車のタイヤホイール懸架機構を示す断面図である。It is sectional drawing which shows the tire wheel suspension mechanism of the motor vehicle by which the cover seal | sticker of this invention was employ | adopted.

符号の説明Explanation of symbols

Ａ 軸受部
２ 回転側部材
３ 固定側部材
３ａ 周溝
４ 転動体
７ カバーシール
７１ 補強環
７１ａ 切断部端面
７２ シール部材
７２ａ シールリップ部 A Bearing part 2 Rotating side member 3 Fixed side member 3a Circumferential groove 4 Rolling body 7 Cover seal 71 Reinforcement ring 71a Cutting end face 72 Seal member 72a Seal lip part

Claims (5)

固定側部材に対して回転側部材を相対回転可能に支持する軸受部及び／若しくはその近傍部位への水や塵埃等の浸入を阻止する為に、上記固定側部材に取付けられるカバーシールであって、
円環状の金属線材からなる補強環と、該補強環に固着一体とされる弾性材製シール部材とよりなり、上記補強環は拡径及び縮径方向の弾性力を保有し、この弾性力をして前記固定側部材の周体に弾性嵌装可能とされ、一方、上記弾性材製シール部材は弾性シールリップを備え、上記補強環の固定側部材に対する嵌装状態ではこのシールリップの先端側が前記回転側部材の周面に弾接若しくは近接するようにし、これにより前記軸受部の開口端部及び／若しくはその近傍部位を覆うようにしたことを特徴とするカバーシール。 A cover seal that is attached to the fixed side member to prevent intrusion of water, dust, or the like into the bearing portion that supports the rotary side member so as to be relatively rotatable with respect to the fixed side member and / or its vicinity. ,
It consists of a reinforcing ring made of an annular metal wire and an elastic material sealing member fixedly integrated with the reinforcing ring. The reinforcing ring has elastic force in the direction of expansion and contraction, and this elastic force The elastic seal member is provided with an elastic seal lip. When the reinforcing ring is fitted to the fixed member, the distal end side of the seal lip is A cover seal characterized in that it is elastically contacted with or close to the peripheral surface of the rotation side member, thereby covering the open end of the bearing and / or its vicinity. 請求項１において、
上記固定側部材の周体には周溝が形成され、上記補強環がこの周溝に弾性嵌合されるようにしたことを特徴とするカバーシール。 In claim 1,
A cover seal characterized in that a circumferential groove is formed in a peripheral body of the fixed side member, and the reinforcing ring is elastically fitted to the circumferential groove. 請求項１又は２において、
上記補強環は、1箇所が切断された開環状とされ且つその切断部端面は互いに近接し、これにより拡径及び縮径方向の弾性力を保有するものであることを特徴とするカバーシール。 In claim 1 or 2,
A cover seal according to claim 1, wherein the reinforcing ring has an open ring shape in which one portion is cut, and the end surfaces of the cut portions are close to each other, thereby holding elastic force in the diameter expanding and contracting directions. 請求項１において、
上記弾性材製シール部材は、ゴム材からなり、上記補強環に対して、ゴム材の加硫成形により一体固着されることを特徴とするカバーシール。 In claim 1,
A cover seal according to claim 1, wherein the sealing member made of an elastic material is made of a rubber material, and is integrally fixed to the reinforcing ring by vulcanization molding of the rubber material. 請求項１乃至請求項４において、
上記シールリップ部は、複数からなることを特徴とするカバーシール。 In Claims 1 to 4,
The cover seal characterized by comprising a plurality of the seal lip portions.
JP2004219596A 2004-07-28 2004-07-28 Cover seal Pending JP2006038120A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004219596A JP2006038120A (en) 2004-07-28 2004-07-28 Cover seal

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ID=35903319

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008044328A1 (en) * 2006-10-06 2008-04-17 Ntn Corporation Bearing device for wheel
JP2008095716A (en) * 2006-10-06 2008-04-24 Ntn Corp Bearing device for wheel
JP2008162317A (en) * 2006-12-27 2008-07-17 Ntn Corp Bearing device for wheel
JP2008163978A (en) * 2006-12-27 2008-07-17 Ntn Corp Wheel bearing device
CN114072591A (en) * 2019-07-10 2022-02-18 Nok株式会社 Sealing device and sealing structure

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008044328A1 (en) * 2006-10-06 2008-04-17 Ntn Corporation Bearing device for wheel
JP2008095716A (en) * 2006-10-06 2008-04-24 Ntn Corp Bearing device for wheel
US8047721B2 (en) 2006-10-06 2011-11-01 Ntn Corporation Wheel bearing apparatus for a vehicle
JP2008162317A (en) * 2006-12-27 2008-07-17 Ntn Corp Bearing device for wheel
JP2008163978A (en) * 2006-12-27 2008-07-17 Ntn Corp Wheel bearing device
CN114072591A (en) * 2019-07-10 2022-02-18 Nok株式会社 Sealing device and sealing structure
CN114072591B (en) * 2019-07-10 2024-03-08 Nok株式会社 Sealing device and sealing structure

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