JP3988389B2 - SEALING DEVICE AND SEALING DEVICE FIXING METHOD - Google Patents

SEALING DEVICE AND SEALING DEVICE FIXING METHOD Download PDF

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JP3988389B2
JP3988389B2 JP2001007548A JP2001007548A JP3988389B2 JP 3988389 B2 JP3988389 B2 JP 3988389B2 JP 2001007548 A JP2001007548 A JP 2001007548A JP 2001007548 A JP2001007548 A JP 2001007548A JP 3988389 B2 JP3988389 B2 JP 3988389B2
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ring
sealing device
fitted
ring body
members
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JP2002213620A (en
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勝 出口
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JTEKT Corp
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JTEKT 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
    • 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
    • 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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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Sealing Of Bearings (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、例えば伝動軸を支持する軸受装置等に気密性や液密性を保つ等のために設けられる密封装置および密封装置の固定方法に関し、詳しくは、軸受を構成する径方向内外に相対回転自在に配置される二つの部材間に配設されて、前記二つの部材の間の環状空間を軸方向で仕切る密封装置および密封装置の固定方法に関する。
【０００２】
従来から、この種の密封装置にあっては、例えば特開２０００−１６２２２３号公報に開示されているように、二つの部材の一方部材に嵌合される金属製の環状芯金に弾性リップを固着したシールリングと、該シールリングに対向して配置されるよう二つの部材の他方部材に嵌合され、かつ該シールリングの弾性リップが接触又は微小隙間を介して対向されるスリンガーとでパックシールを構成したものが知られている。
【０００３】
このパックシールでは、シールリングの弾性リップがスリンガーに全周にわたって摺接又は微小隙間を介して対向されることで、液密性等を保つようにしている。
【０００４】
【発明が解決しようとする課題】
ところで、上記従来構造のものにあっては、スリンガーにおける環状芯金が、他方部材に対して互いの金属の面同士が接触する状態で嵌合されていたので、そのスリンガーとこれとの嵌合した合わせ面間に微細隙間を生じさせるおそれがあった。
【０００５】
そのため、その微細隙間を通して外気が軸受装置内に通じたり潤滑剤が外部へ漏出したりするおそれがあって、液密性を十分に保つことができないという課題があった。
【０００６】
また、この気密性や液密性を保つために、そのスリンガーを嵌合する側の他方部材に弾性樹脂材からなるＯリングを設置し、環状芯金がそのＯリングに接当するよう嵌合させることも提案されているが、Ｏリングを設けるには、他方部材におけるスリンガーとの合わせ面にＯリング設置用の環状溝を形成しなければならないので、構造的に複雑になるとともに、加工等の手間によりコスト高を招く等の問題がある。
【０００７】
本発明は、上記実情に鑑みてなされたものであって、構造簡単でありながら内外の液密性保持を十分図ることのできる密封装置および密封装置の固定方法の提供を目的とする。
【００１０】
【課題を解決するための手段】
本発明の請求項１に係る密封装置は、軸受を構成する径方向内外に相対回転自在に配置される二つの部材間に配設されて、前記二つの部材の間の環状空間を軸方向で仕切る密封装置であって、前記二つの部材の一方に嵌合装着されかつ弾性リップを有する第１環体と、前記二つの部材の他方に嵌合装着されかつ前記第１環体の弾性リップが接触又は微細隙間を介して対向される面に接着剤の層が設けられる第２環体とを有し、前記第２環体の前記他方部材への嵌合部位である円筒部の前記他方部材と嵌合状態で対向する周面に弾性変形可能な接着剤を塗布して、該接着剤を介して前記第２環体が前記他方部材に嵌合されることを特徴とする。
【００１１】
本発明の請求項１に係る密封装置によると、第２環体を他方部材に嵌合されている状態で、他方部材と第２環体の嵌合面に弾性体が介在されているから、弾性体が第２環体と他方部材との間に圧縮された状態となることもあって、その弾性体が二つの部材の間環状空間を式っている箇所における第２環体と他方部材との嵌合面間における隙間が埋められた状態となり、そこでの液密性が高いものとなっている。また、第１環体と第２環体との間は第１環体の弾性リップが第２環体に接当又は微小隙間を介して対向させていることもあって、密封構造全体としての液密性が高いものとなっている。そして、Ｏリング等による液密構造でもないので、シール部材設置用の溝加工等をしなくても良く、構造的に簡易なものとなる。
【００１２】
本発明の請求項３に係る密封装置の固定方法は、請求項２に記載の密封装置の固定方法であって、前記第２環体を液状の樹脂接着剤を満たした浸漬槽に浸漬した後、前記第２環体を転がり軸受を構成する前記他方部材としての内輪の外周面に嵌合させることにより接着固定する。
【００１８】
【発明の実施の形態】
本発明の実施の形態を図に基づいて以下に説明する。この実施の形態では、本発明に係る密封装置を備える軸受装置として車両用ハブユニットを示しているが、本発明は後述するようにこの車両用ハブユニットに限定されるものではない。
【００１９】
図１は、本発明に係る密封装置の一例を示す断面図、図２は、本発明に係る密封構造を備えるハブユニットを示す一部破断側面図である。
【００２０】
図例の車両用ハブユニット１は、ハブホイール２およびアンギュラ玉軸受３を備える。
【００２１】
ハブホイール２は、図示しない車輪が取り付けられる径方向外向きのフランジ４と、アンギュラ玉軸受３がその外周の軸受嵌合領域に固定される中空軸５とを有する。
【００２２】
アンギュラ玉軸受３は、斜接形式の複列外向きの形式であって、中空軸５の小径外周面に外嵌される単一軌道を有する内輪６と、二列の軌道溝を有する単一の外輪７と、二列で配設される複数の玉８と、二つの冠形保持器９とを備えており、ハブホイール２の中空軸５の大径外周面を一方内輪とする構成になっている。内輪６は、一般的な単列アンギュラ玉軸受の内輪をそのまま流用している。
【００２３】
外輪７の外周には、径方向外向きのフランジ１０が設けられている。
【００２４】
ハブユニット１は、中空軸５の円筒状の軸端５ａが図２に示すようにかしめられた後、車両のドライブシャフト１１とシャフトケース１２との間に取り付けられる。
【００２５】
つまり、ハブホイール２の中空軸５内周のスプライン部５ｂとドライブシャフト１１外周のスプライン部１１ａとが嵌合されてナット１３により結合され、軸受３の外輪７のフランジ１０がシャフトケース１２にボルト１４により非回転に結合されることで、ドライブシャフト１１の回転に伴いハブホイール２も軸心Ｐ周りで回転するようになっている。
【００２６】
前記かしめは、ハブホイール２の中空軸５の外周に内輪６を圧入により外嵌装着してから、その軸端５ａを、かしめ治具を用いてローリングかしめする。
【００２７】
次に、本発明の特徴構成に関して説明する。図１及び図２に示すように、軸受３における他方部材としての内輪６と一方部材としての外輪７との間の環状空間を気密状態に密閉するため軸方向で仕切るシール１５，２５を設けている。すなわち、軸受３の車両内側端と車両外側端とに、それぞれシール１５，２５が設けられている。
【００２８】
シール２５は、詳述しないが、環状芯金に弾性樹脂材を一体化したものであって、環状芯金が外輪７の内周面に嵌合されているとともに、シール２５のリップ等が、軸受３における車両外側の玉８に対する内輪をなすハブホイール２に弾性的に密着するよう構成している。
【００２９】
一方、軸受３における車両内側端のシールを成す密封装置としてのパックシール１５は、図１に示すように、外輪７の内周面に嵌合される第１環体としてのシールリング１８と、内輪６の外周面に嵌合される第２環体としてのスリンガー１６とで構成されている。
【００３０】
このスリンガー１６は、金属板をプレス加工した径方向断面視Ｌ字状の環状芯金を成すものであって、その環状芯金は、内輪６の外周面に嵌合される円筒部１６ｂと、この円筒部１６ｂの軸端から径方向に沿って外方に延びる環状板部１６ａとを有した構成となっている。
【００３１】
さらに、スリンガー１６の環状芯金の表面全体には弾性樹脂材が被覆されている。この弾性樹脂剤は後述するように環状芯金と内輪６の外周面とを接着する接着剤でなるのであり、詳細は後述する。
【００３２】
一方、シールリング１８は、金属板をプレス加工した径方向断面視Ｌ字状の環状芯金２０に、弾性リップ１７ａ，１７ｂ，１７ｃ等を形成するようにゴムなどの弾性材を加硫接着したものである。
【００３３】
環状芯金２０は、外輪７の内周面に嵌合される円筒部２０ｂと、この円筒部２０ｂの軸端から径方向に沿って内方に延びる環状板部２０ａとを有した構成となっている。
【００３４】
そして、シールリング１８の３つの弾性リップ１７ａ，１７ｂ，１７ｃは、スリンガー１６の軸方向に沿った円筒部１６ｂに対して全周にわたって先端部が接触する二つのラジアルリップ１７ａ，１７ｂと、スリンガー１６における環状板部１６ａに対して全周にわたって先端部が微小隙間を介して対向している一つのアキシャルリップ１７ｃとで構成されている（なお、図１では上記微小隙間は図示していない）。
【００３５】
また、弾性リップ１７ａ，１７ｂ，１７ｃと同一素材を該弾性リップ１７ａ，１７ｂ，１７ｃに一体となる状態で、円筒部２０ｂの外周面側にも弾性樹脂層２３を接着している。
【００３６】
シールリング１８は、その弾性樹脂剤層２３を介在させる状態で外輪７に嵌合させており、その弾性樹脂剤層２３によって、シールリング１８の円筒部２０ｂと外輪７との嵌合面における密封性が高められている。
【００３７】
スリンガー１６は、予め樹脂接着剤を表面の全面に被膜状に形成するため、液状の樹脂接着剤を満たした浸漬槽に浸漬し、その浸漬した後のスリンガー１６を内輪６の外周面に嵌合する。その嵌合に伴ってスリンガー１６と内輪６の外周面との間の接着剤層２１がスリンガー１６を内輪６に接着固定する。そのとき、スリンガー１６表面と内輪６との間は接着剤層２１で隙間なく埋まるとともに、この接着剤層２１は、比較的弾性変形し易いものであるから、スリンガー１６と内輪６との間は圧縮変形した接着剤層２１が密着して液密状態となっている。
【００３８】
さらに、スリンガー１６の環状板部１６ａの車両内方側面には、周方向に均等に多極磁化された磁性体１９を全周にわたって固定設置している。
【００３９】
この磁性体１９は、ドライブシャフト１１の回転数を検出するためのものであって、車体側に固定設置された磁気センサ２２により、前記回転軸心Ｐを中心とする所定角度ごとの磁極を検出できるようにしている。
【００４０】
そして、予めシールリング１８は、外輪７に圧入嵌合して固定されているのであって、スリンガー１６は、内輪６に嵌合されているとともに、上述のように接着剤によって内輪６に固着されている。
【００４１】
シールリング１８のラジアルリップ１７ａは全周にわたってスリンガー１６の円筒部１６ｂ外周面に接触し、アキシャルリップ１７ｂ，１７ｃは、スリンガー１６の環状板部１６ａに微小隙間を介して対抗されるので、シールリング１８とスリンガー１６との間の液密性も高いものとなっている。
【００４２】
上記実施の形態では、本発明に係る密封装置を備えるものとして、ハブユニットの軸受装置を密封構造として示したが、本発明は、該軸受装置等の構成に限定されるものでなく、同心状に配設されるとともに相対回転自在に支持された内側部材と外側部材との間の環状空間を仕切るように設ける密封装置に適用できるものである。なお、内側部材を一方部材とし、外側部材を他方部材として構成するものにも適用できる。
【００４４】
【発明の効果】
本発明によれば、第２環体を他方部材に嵌合されている状態で、他方部材と第２環体との嵌合面に弾性体が介在されているから、弾性体が第２環体と他方部材との間に圧縮された状態となることもあって、その弾性体が二つの部材の間の環状空間を仕切っている箇所における第２環体と他方部材との嵌合面における隙間が埋められた状態となって、そこでの液密性が高いものとなっている。また、第１環体と第２環体との間は第１環体の弾性リップが第２環体に接当又は微小隙間を介して対向させていることもあって、密封構造全体としての液密性が高いものとなっている。そして、Ｏリング等による液密構造でもないので、シール部材設置用の溝加工等をしなくても良く、構造的に簡易なものとなり、安価に製造できる。
【図面の簡単な説明】
【図１】シール部材を示す縦断側面図
【図２】ハブユニットを示す一部破断側面図
【符号の説明】
６ 他方部材（内輪）
７ 一方部材（外輪）
１５ 密封装置
１６ スリンガー（第２環体）
１７ａ，１７ｂ ラジアルリップ（弾性リップ）
１７ｃ アキシャルリップ（弾性リップ）
１８ シールリング（第１環体）[0001]
BACKGROUND OF THE INVENTION
The present invention, for example, relates to a method of fixing the sealing device and the sealing device is provided for an equal keeping airtightness and liquid tightness in the bearing device or the like for supporting a transmission shaft, more particularly, relative to the radial direction and out constituting the bearing The present invention relates to a sealing device that is disposed between two members that are rotatably arranged and partitions an annular space between the two members in the axial direction, and a fixing method of the sealing device .
[0002]
Conventionally, in the tightly sealing apparatus of this kind, for example as disclosed in JP-A-2000-162223, resilient lip in a metal annular core metal fitted to one member of two members And a slinger that is fitted to the other member of the two members so as to face the seal ring, and the elastic lip of the seal ring is opposed to each other through contact or a minute gap. A pack seal is known.
[0003]
In this pack seal, the elastic lip of the seal ring is opposed to the slinger over the entire circumference through a sliding contact or a minute gap, so that liquid tightness and the like are maintained.
[0004]
[Problems to be solved by the invention]
By the way, in the thing of the above-mentioned conventional structure, since the ring metal core in a slinger was fitted in the state where each metal surface contacted with respect to the other member, the fitting of the slinger and this There was a risk of creating a fine gap between the mating surfaces.
[0005]
Therefore, there is a possibility that outside air may pass into the bearing device through the fine gap or the lubricant may leak to the outside, and there is a problem that the liquid tightness cannot be sufficiently maintained.
[0006]
In addition, in order to maintain this airtightness and liquid tightness, an O-ring made of an elastic resin material is installed on the other member on the side where the slinger is fitted, and the annular cored bar is fitted so as to contact the O-ring. However, in order to provide an O-ring, an annular groove for installing an O-ring must be formed on the mating surface of the other member with a slinger. There is a problem such as incurring high costs due to the time and effort.
[0007]
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a sealing device and a fixing method for the sealing device that can sufficiently maintain liquid-tightness inside and outside while having a simple structure.
[0010]
[Means for Solving the Problems]
A sealing device according to a first aspect of the present invention is disposed between two members that are relatively rotatably arranged inside and outside in a radial direction constituting a bearing, and an annular space between the two members is axially arranged. A sealing device for partitioning, wherein a first ring body fitted and attached to one of the two members and having an elastic lip, and an elastic lip of the first ring body fitted and attached to the other of the two members The other member of the cylindrical portion, which is a fitting portion of the second ring body to the other member, and has a second ring body provided with a layer of an adhesive on a surface opposed through contact or a fine gap An adhesive that can be elastically deformed is applied to the peripheral surfaces facing each other in a fitted state, and the second ring body is fitted to the other member via the adhesive.
[0011]
According to the sealing apparatus according to claim 1 of the present invention, the second ring member in a state of being fitted in the other member, because the elastic body to the fitting surface of the other member and the second ring member is interposed, The elastic body may be in a state of being compressed between the second ring body and the other member, and the second ring body and the other member at a place where the elastic body forms an annular space between the two members. The gap between the fitting surfaces is filled, and the liquid-tightness there is high. In addition, the elastic ring of the first ring body may be opposed to the second ring body through a contact or a minute gap between the first ring body and the second ring body. The liquid-tightness is high. Further, since it is not a liquid-tight structure using an O-ring or the like, it is not necessary to perform a groove processing or the like for installing a seal member, and the structure is simple.
[0012]
The sealing device fixing method according to claim 3 of the present invention is the sealing device fixing method according to claim 2, wherein the second ring body is immersed in an immersion tank filled with a liquid resin adhesive. Then, the second annular body is bonded and fixed by fitting it to the outer peripheral surface of the inner ring as the other member constituting the rolling bearing.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, a vehicle hub unit is shown as a bearing device including the sealing device according to the present invention, but the present invention is not limited to this vehicle hub unit as will be described later.
[0019]
FIG. 1 is a cross-sectional view showing an example of a sealing device according to the present invention, and FIG. 2 is a partially broken side view showing a hub unit having a sealing structure according to the present invention.
[0020]
The illustrated vehicle hub unit 1 includes a hub wheel 2 and an angular ball bearing 3.
[0021]
The hub wheel 2 has a radially outward flange 4 to which a wheel (not shown) is attached, and a hollow shaft 5 on which an angular ball bearing 3 is fixed to a bearing fitting region on the outer periphery thereof.
[0022]
The angular ball bearing 3 is an oblique contact type double-row outward type, an inner ring 6 having a single race that is externally fitted to a small-diameter outer peripheral surface of the hollow shaft 5, and a single row having two rows of raceway grooves. The outer ring 7, a plurality of balls 8 arranged in two rows, and two crown-shaped cages 9, with the large-diameter outer peripheral surface of the hollow shaft 5 of the hub wheel 2 as one inner ring. It has become. As the inner ring 6, an inner ring of a general single row angular contact ball bearing is used as it is.
[0023]
A radially outward flange 10 is provided on the outer periphery of the outer ring 7.
[0024]
The hub unit 1 is attached between a drive shaft 11 and a shaft case 12 of a vehicle after the cylindrical shaft end 5a of the hollow shaft 5 is caulked as shown in FIG.
[0025]
That is, the spline portion 5b on the inner periphery of the hollow shaft 5 of the hub wheel 2 and the spline portion 11a on the outer periphery of the drive shaft 11 are fitted and connected by the nut 13, and the flange 10 of the outer ring 7 of the bearing 3 is bolted to the shaft case 12. 14, the hub wheel 2 is also rotated around the axis P as the drive shaft 11 rotates.
[0026]
In the caulking, the inner ring 6 is externally fitted to the outer periphery of the hollow shaft 5 of the hub wheel 2 by press fitting, and then the shaft end 5a is rolled by caulking using a caulking jig.
[0027]
Next, the characteristic configuration of the present invention will be described. As shown in FIG. 1 and FIG. 2, seals 15 and 25 are provided that are partitioned in the axial direction in order to seal the annular space between the inner ring 6 as the other member and the outer ring 7 as the one member in the bearing 3 in an airtight state. Yes. That is, seals 15 and 25 are provided at the vehicle inner end and the vehicle outer end of the bearing 3, respectively.
[0028]
Although the seal 25 is not described in detail, an elastic resin material is integrated with the annular core metal, the annular core metal is fitted to the inner peripheral surface of the outer ring 7, and the lip of the seal 25 is The bearing 3 is configured to be elastically in close contact with the hub wheel 2 that forms an inner ring with respect to the ball 8 outside the vehicle.
[0029]
On the other hand, as shown in FIG. 1, a pack seal 15 as a sealing device that forms a seal at the inner end of the vehicle in the bearing 3 includes a seal ring 18 as a first ring fitted to the inner peripheral surface of the outer ring 7, It is comprised with the slinger 16 as a 2nd ring body fitted by the outer peripheral surface of the inner ring | wheel 6. As shown in FIG.
[0030]
The slinger 16 forms an L-shaped annular cored bar in which a metal plate is pressed, and the annular cored bar includes a cylindrical part 16b fitted to the outer peripheral surface of the inner ring 6, The cylindrical portion 16b has an annular plate portion 16a extending outward from the axial end along the radial direction.
[0031]
Further, the entire surface of the annular cored bar of the slinger 16 is covered with an elastic resin material. As will be described later, this elastic resin agent is an adhesive that adheres the annular cored bar and the outer peripheral surface of the inner ring 6, and will be described in detail later.
[0032]
On the other hand, the seal ring 18 is formed by vulcanizing and bonding an elastic material such as rubber to an annular cored bar 20 having a L-shaped radial sectional view obtained by pressing a metal plate so as to form elastic lips 17a, 17b, 17c and the like. Is.
[0033]
The annular cored bar 20 has a configuration including a cylindrical portion 20b fitted to the inner peripheral surface of the outer ring 7, and an annular plate portion 20a extending inward along the radial direction from the axial end of the cylindrical portion 20b. ing.
[0034]
The three elastic lips 17 a, 17 b, and 17 c of the seal ring 18 include two radial lips 17 a and 17 b that are in contact with the cylindrical portion 16 b along the axial direction of the slinger 16, and the slinger 16 1 has a single axial lip 17c that is opposed to the annular plate portion 16a over the entire circumference with a minute gap (note that the minute gap is not shown in FIG. 1).
[0035]
In addition, the elastic resin layer 23 is bonded to the outer peripheral surface side of the cylindrical portion 20b in a state where the same material as the elastic lips 17a, 17b, and 17c is integrated with the elastic lips 17a, 17b, and 17c.
[0036]
The seal ring 18 is fitted to the outer ring 7 with the elastic resin agent layer 23 interposed, and the elastic resin agent layer 23 seals the fitting surface between the cylindrical portion 20 b of the seal ring 18 and the outer ring 7. Sexuality is enhanced.
[0037]
In order to form the resin adhesive in the form of a film on the entire surface in advance, the slinger 16 is immersed in an immersion tank filled with a liquid resin adhesive, and the immersed slinger 16 is fitted to the outer peripheral surface of the inner ring 6. To do. Along with the fitting, the adhesive layer 21 between the slinger 16 and the outer peripheral surface of the inner ring 6 adheres and fixes the slinger 16 to the inner ring 6. At that time, the surface of the slinger 16 and the inner ring 6 are filled with an adhesive layer 21 without a gap, and the adhesive layer 21 is relatively elastically deformed. The compression-deformed adhesive layer 21 is in close contact and in a liquid-tight state.
[0038]
Further, a magnetic body 19 that is uniformly multipolar magnetized in the circumferential direction is fixedly installed on the entire inner circumference of the vehicle inner side surface of the annular plate portion 16a of the slinger 16.
[0039]
The magnetic body 19 is for detecting the number of rotations of the drive shaft 11 and detects magnetic poles at predetermined angles around the rotation axis P by a magnetic sensor 22 fixedly installed on the vehicle body side. I can do it.
[0040]
The seal ring 18 is press-fitted and fixed to the outer ring 7 in advance, and the slinger 16 is fitted to the inner ring 6 and fixed to the inner ring 6 with an adhesive as described above. ing.
[0041]
The radial lip 17a of the seal ring 18 is in contact with the outer peripheral surface of the cylindrical portion 16b of the slinger 16 over the entire circumference, and the axial lips 17b and 17c are opposed to the annular plate portion 16a of the slinger 16 through a minute gap. The liquid-tightness between 18 and the slinger 16 is also high.
[0042]
In the above-described embodiment, the hub unit bearing device is shown as a sealing structure as having the sealing device according to the present invention. However, the present invention is not limited to the configuration of the bearing device or the like, and is concentric. And a sealing device that is provided so as to partition an annular space between the inner member and the outer member that are disposed so as to be relatively rotatable. In addition, it is applicable also to what comprises an inner member as one member and an outer member as the other member.
[0044]
【The invention's effect】
According to the present invention, since the elastic body is interposed on the fitting surface between the other member and the second ring body in a state where the second ring body is fitted to the other member, the elastic body is the second ring. The elastic body may be in a compressed state between the body and the other member, so that the elastic body is in a fitting surface between the second ring body and the other member at a location where the annular space between the two members is partitioned. The gap is filled, and the liquid tightness there is high. In addition, the elastic ring of the first ring body may be opposed to the second ring body through a contact or a minute gap between the first ring body and the second ring body. The liquid-tightness is high. Further, since it is not a liquid-tight structure using an O-ring or the like, it is not necessary to perform groove processing for installing the seal member, and the structure is simple and can be manufactured at low cost.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view showing a sealing member. FIG. 2 is a partially broken side view showing a hub unit.
6 Other member (inner ring)
7 One member (outer ring)
15 Sealing device 16 Slinger (second ring)
17a, 17b radial lip (elastic lip)
17c axial lip (elastic lip)
18 Seal ring (first ring)

Claims (3)

軸受を構成する径方向内外に相対回転自在に配置される二つの部材間に配設されて、前記二つの部材の間の環状空間を軸方向で仕切る密封装置であって、
前記二つの部材の一方に嵌合装着されかつ弾性リップを有する第１環体と、前記二つの部材の他方に嵌合装着されかつ前記第１環体の弾性リップが接触又は微細隙間を介して対向される面に接着剤の層が設けられる第２環体とを有し、前記第２環体の前記他方部材への嵌合部位である円筒部の前記他方部材と嵌合状態で対向する周面に弾性変形可能な接着剤を塗布して、該接着剤を介して前記第２環体が前記他方部材に嵌合される、密封装置。A sealing device that is disposed between two members that are rotatably arranged relative to each other inside and outside the radial direction of the bearing, and that partitions an annular space between the two members in the axial direction,
The first ring body fitted and mounted on one of the two members and having an elastic lip, and the elastic lip of the first ring body fitted and mounted on the other of the two members are in contact or through a fine gap. A second annular body provided with an adhesive layer on the opposite surface, and opposed in a fitted state to the other member of the cylindrical portion that is a fitting portion of the second annular body to the other member. A sealing device in which an elastically deformable adhesive is applied to a peripheral surface, and the second ring body is fitted to the other member via the adhesive. 前記第２環体の表面の全体に前記接着剤を塗布した、請求項１記載の密封装置。  The sealing device according to claim 1, wherein the adhesive is applied to the entire surface of the second annular body. 請求項２に記載の密封装置の固定方法であって、
前記第２環体を液状の樹脂接着剤を満たした浸漬槽に浸漬した後、前記第２環体を転がり軸受を構成する前記他方部材としての内輪の外周面に嵌合させることにより接着固定する密封装置の固定方法。A method for fixing a sealing device according to claim 2,
After the second ring body is immersed in a dipping tank filled with a liquid resin adhesive, the second ring body is bonded and fixed by being fitted to the outer peripheral surface of the inner ring as the other member constituting the rolling bearing. Fixing method of sealing device.
JP2001007548A 2001-01-16 2001-01-16 SEALING DEVICE AND SEALING DEVICE FIXING METHOD Expired - Lifetime JP3988389B2 (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160010692A1 (en) * 2014-07-08 2016-01-14 Jtekt Corporation Seal and cover

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009002425A (en) * 2007-06-21 2009-01-08 Nok Corp Sealing device
JP5097489B2 (en) 2007-09-21 2012-12-12 Ｎｔｎ株式会社 Magnetic encoder and rolling bearing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160010692A1 (en) * 2014-07-08 2016-01-14 Jtekt Corporation Seal and cover

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