JP2001349331A - Manufacturing method of rolling bearing device and accessory member for rolling bearing device - Google Patents
Manufacturing method of rolling bearing device and accessory member for rolling bearing deviceInfo
- Publication number
- JP2001349331A JP2001349331A JP2000170796A JP2000170796A JP2001349331A JP 2001349331 A JP2001349331 A JP 2001349331A JP 2000170796 A JP2000170796 A JP 2000170796A JP 2000170796 A JP2000170796 A JP 2000170796A JP 2001349331 A JP2001349331 A JP 2001349331A
- Authority
- JP
- Japan
- Prior art keywords
- rolling bearing
- thermosetting adhesive
- elastic material
- bearing device
- core
- 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
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明に係る転がり軸受装
置は、例えば自動車の車輪や工作機械の主軸等、各種機
械装置の回転部材を回転自在に支持する為に使用する。
特に、本発明は、この様な転がり軸受装置を構成する外
輪相当部材や内輪相当部材に固定する、金属製の芯金に
ニトリルブタジエンゴムにより造られた弾性材を添着し
て成る付属部材、例えばシールリングや回転状態検出用
エンコーダ等の耐久性を確保すべく発明したものであ
る。BACKGROUND OF THE INVENTION A rolling bearing device according to the present invention is used for rotatably supporting a rotating member of various mechanical devices such as a wheel of an automobile or a main shaft of a machine tool.
In particular, the present invention relates to an auxiliary member formed by attaching an elastic material made of nitrile-butadiene rubber to a metal core, which is fixed to an outer ring-equivalent member or an inner ring-equivalent member constituting such a rolling bearing device, for example, The present invention has been invented to ensure durability of a seal ring, a rotation state detection encoder, and the like.
【０００２】[0002]
【従来の技術】各種機械装置を構成するハウジング等の
固定部分に対し、回転軸等の回転部材を回転自在に支持
する為に、従来から各種構造の転がり軸受装置が使用さ
れている。又、この様な転がり軸受装置は、金属製の芯
金に合成ゴムにより造られた弾性材を添着して成る付属
部材、例えばシールリングや回転状態検出用エンコーダ
等を、この転がり軸受装置を構成する外輪相当部材や内
輪相当部材に固定して使用する事が広く行なわれてい
る。この様な付属部材を固定した、本発明の対象となる
転がり軸受装置の１例として、本発明の実施の形態の第
１例を示す図１により説明する。2. Description of the Related Art Conventionally, rolling bearing devices having various structures have been used in order to rotatably support a rotating member such as a rotating shaft with respect to a fixed portion such as a housing constituting various mechanical devices. Further, such a rolling bearing device comprises an auxiliary member formed by attaching an elastic material made of synthetic rubber to a metal core, such as a seal ring and an encoder for detecting a rotation state, and constitutes the rolling bearing device. It is widely used to fix to an outer ring equivalent member or an inner ring equivalent member. As an example of a rolling bearing device to which the present invention is applied with such an attached member fixed thereto, a first example of an embodiment of the present invention will be described with reference to FIG.
【０００３】この図１は、本発明の対象となる転がり軸
受装置の１例として、自動車の車輪を懸架装置に対して
回転自在に支持する為の転がり軸受ユニット１の例を示
している。車両への組み付け状態で、懸架装置に支持し
た状態で回転しない、請求項に記載した外輪相当部材に
相当する外輪２は、複列の外輪軌道３、３を内周面に形
成している。そして、上記懸架装置を構成するナックル
４の端部にこの外輪２を、この端部内周面に形成した係
止溝５に係止した止め輪６により軸方向変位を阻止した
状態で、内嵌固定している。又、この外輪２の内側に
は、請求項に記載した内輪相当部材に相当するハブ７
を、この外輪２と同心に配置している。FIG. 1 shows an example of a rolling bearing unit 1 for rotatably supporting a wheel of an automobile with respect to a suspension device as an example of a rolling bearing device to which the present invention is applied. An outer ring 2 corresponding to an outer ring-equivalent member described in claims that does not rotate in a state of being mounted on a vehicle and supported by a suspension device has double-row outer ring tracks 3, 3 formed on an inner peripheral surface. Then, the outer ring 2 is fitted to the end of the knuckle 4 constituting the suspension device in a state where axial displacement is prevented by a retaining ring 6 locked in a locking groove 5 formed in the inner peripheral surface of the end. It is fixed. A hub 7 corresponding to the inner ring-equivalent member described in the claims is provided inside the outer ring 2.
Are arranged concentrically with the outer ring 2.
【０００４】このハブ７は、ハブ本体８と１対の内輪９
ａ、９ｂとを結合固定して成る。このハブ本体８の外端
（外端とは、自動車への組み付け状態で車両の幅方向外
側となる端を言い、図１の左端。反対に、内端とは、自
動車への組み付け状態で車両の幅方向中央寄りとなる端
を言い、図１の右端。）部外周面には、図示しない車輪
を固定する為のフランジ（図示省略）を、中間部外周面
には小径段部１０を、それぞれ形成している。そして、
この小径段部１０に、その外周面にそれぞれ内輪軌道１
１を形成した上記１対の内輪９ａ、９ｂを外嵌固定して
いる。[0004] The hub 7 comprises a hub body 8 and a pair of inner rings 9.
a and 9b. The outer end of the hub body 8 (the outer end is an end that is the widthwise outside of the vehicle when assembled to the vehicle, and is the left end in FIG. 1. On the contrary, the inner end is the vehicle when assembled to the vehicle. The right end in FIG. 1). A flange (not shown) for fixing a wheel (not shown) is provided on the outer peripheral surface of the portion, and a small-diameter step portion 10 is provided on the outer peripheral surface of the intermediate portion. Each is formed. And
The small-diameter step portion 10 has an inner raceway 1 on its outer peripheral surface.
The pair of inner rings 9a and 9b forming the first member 1 are externally fitted and fixed.
【０００５】又、上記各外輪軌道３、３と内輪軌道１
１、１１との間に、それぞれが請求項に記載した転動体
に相当する複数個ずつの玉１２、１２を、保持器（図示
省略）により保持した状態で、転動自在に設けている。
尚、図示の例では転動体として玉１２、１２を使用して
いるが、重量が嵩む自動車用の転がり軸受ユニットの場
合には、上記転動体としてテーパころを使用する場合も
ある。The outer raceways 3 and 3 and the inner raceway 1
A plurality of balls 12, 12, each of which corresponds to a rolling element described in the claims, are provided between the first and second rolling elements 11 and 11 so as to be rollable while being held by a retainer (not shown).
Although the balls 12 are used as rolling elements in the illustrated example, tapered rollers may be used as the rolling elements in the case of a heavy-duty rolling bearing unit for an automobile.
【０００６】又、これら各玉１２、１２を設置した空間
の外端開口部は、請求項に記載した付属部材に相当する
シールリング１３により塞いでいる。このシールリング
１３は、上記各玉１２、１２を設置した空間内に封入し
たグリースが外部に漏洩する事を防止したり、或は外部
に存在する雨水、塵等の各種異物が上記空間内に侵入す
る事を防止する。この様なシールリング１３は、鋼板等
の金属板にプレス加工を施す事により、断面略Ｌ字形で
全体を円環状に形成した芯金１４に、ゴムの如きエラス
トマー等の弾性材１５を熱硬化性接着剤により添着して
成る。そして、このうちの芯金１４を上記外輪２の外端
部内周面に締まり嵌めで内嵌する事により、このシール
リング１３をこの外輪２の内周面に固定すると共に、上
記弾性材１５の内周縁を上記内輪９ａの外端部外周面に
摺接させている。尚、この弾性材１５としては、一般的
な合成ゴムであるニトリルブタジエンゴム（ＮＢＲ）が
広く使用されている。尚、本明細書中のニトリルブタジ
エンゴムには、水素化ニトリルブタジエンゴム（Ｈ−Ｎ
ＢＲ）を含む。[0006] The outer end opening of the space in which the balls 12, 12 are installed is closed by a seal ring 13 corresponding to an attached member described in the claims. The seal ring 13 prevents the grease sealed in the space where the balls 12 and 12 are installed from leaking to the outside, or prevents various foreign substances such as rainwater and dust existing outside from entering the space. Prevent intrusion. Such a seal ring 13 is formed by press-forming a metal plate such as a steel plate to heat-harden an elastic material 15 such as an elastomer such as rubber on a metal core 14 having a substantially L-shaped cross section and a ring shape as a whole. It is adhered with a conductive adhesive. The seal ring 13 is fixed to the inner peripheral surface of the outer ring 2 by tightly fitting the core metal 14 on the inner peripheral surface of the outer end of the outer ring 2. The inner peripheral edge is in sliding contact with the outer peripheral surface of the outer end of the inner ring 9a. As the elastic material 15, nitrile butadiene rubber (NBR), which is a general synthetic rubber, is widely used. The nitrile butadiene rubber in the present specification includes hydrogenated nitrile butadiene rubber (H-N
BR).
【０００７】この様なニトリルブタジエンゴムにより造
られる弾性材１５を、上述の様な金属製の芯金１４に添
着して上記シールリング１３とするには、先ず、この弾
性材１５を成形する為の金型内に、上記熱硬化性接着剤
を塗布した芯金１４をセットする。次いで、この金型内
に上記弾性材１５を構成するニトリルブタジエンゴムの
素材（加硫成形する前のニトリルブタジエンゴムであ
り、ニトリルブタジエンゴムを構成する各種材料に硫黄
等の各種配合剤を混練したもの）を送り込む。そして、
この加硫成形前の状態の弾性材１５と上記芯金１４との
間に上記熱硬化性接着剤を介在させた状態で、この弾性
材１５を加硫成形する。上記熱硬化性接着剤は、この様
な弾性材１５を加硫成形する際の加熱によって硬化し、
この弾性材１５と上記芯金１４とを互いに分離不能に接
着する。尚、この熱硬化性接着剤としては、フェノール
系の接着剤が広く使用されている。In order to attach the elastic member 15 made of such nitrile-butadiene rubber to the metal core 14 as described above to form the seal ring 13, first, the elastic member 15 is formed. The core metal 14 coated with the thermosetting adhesive is set in the mold. Next, a material of nitrile-butadiene rubber constituting the elastic material 15 (a nitrile-butadiene rubber before vulcanization molding, and various kinds of compounding agents such as sulfur were mixed with various materials constituting the nitrile-butadiene rubber in this mold. Stuff). And
The elastic material 15 is vulcanized and formed in a state where the thermosetting adhesive is interposed between the elastic material 15 before the vulcanization molding and the core metal 14. The thermosetting adhesive is cured by heating when vulcanizing and forming such an elastic material 15,
The elastic member 15 and the metal core 14 are bonded to each other inseparably. Incidentally, a phenol-based adhesive is widely used as the thermosetting adhesive.
【０００８】[0008]
【発明が解決しようとする課題】ところで、近年、転が
り軸受装置の外輪や内輪を固定する為のハウジング（ナ
ックル４）や軸（ハブ本体８）等を、軽量化を図るべ
く、アルミニウム合金やマグネシウム合金等の軽合金に
より造る事が行なわれている。これに対して、外輪軌道
を形成した上記外輪や内輪軌道を形成した上記内輪は、
必要とする転がり寿命や強度を確保すべく、軸受鋼や浸
炭鋼、或は高炭素鋼等の鋼により造られている。この
為、転がり軸受装置の周囲で、互いに金属電位が異なる
軽合金製の部材と鋼製の部材とが隣り合う事が避けられ
ない。そして、この様な互いに金属電位が異なる軽合金
製の部材と鋼製の部材とが隣り合う部分に、導電性の液
体（電解質の水溶液）がこれら軽合金製の部材と鋼製の
部材とを覆う様に付着すると、この導電性の液体が電解
液となって、この転がり軸受装置の周囲に電池が構成さ
れる。In recent years, a housing (knuckle 4) and a shaft (hub body 8) for fixing an outer ring and an inner ring of a rolling bearing device are made of aluminum alloy or magnesium in order to reduce the weight. It is made with light alloys such as alloys. On the other hand, the outer race forming the outer raceway and the inner race forming the inner raceway are:
In order to secure the required rolling life and strength, it is made of steel such as bearing steel, carburized steel, or high carbon steel. For this reason, it is inevitable that the light alloy member and the steel member having different metal potentials are adjacent to each other around the rolling bearing device. Then, a conductive liquid (aqueous solution of an electrolyte) is applied between the light alloy member and the steel member at a portion where the light alloy member and the steel member having different metal potentials are adjacent to each other. If it adheres so as to cover, the conductive liquid becomes an electrolytic solution, and a battery is formed around the rolling bearing device.
【０００９】例えば、図１に示した様な、自動車に組み
込む転がり軸受ユニット１の場合は、海岸付近では海水
に含まれる塩化ナトリウム（食塩）を含んだ水が、積雪
地域では融雪剤に含まれる塩化ナトリウムや塩化カリウ
ム等を含んだ水が、この転がり軸受ユニット１の周囲に
付着する場合がある。そして、この様な塩化ナトリウム
や塩化カリウム等の電離し易い物質を含んだ水が、同図
に梨地で示す様に、鋼製の外輪２やシールリング１３を
構成する芯金１４と、軽合金製のナックル４とを覆う様
に付着すると、この電離し易い物質を含んだ水が電解液
となり電池が構成される。そして、同図に矢印αで示す
様に電流が流れ、この電流に基づいてこの電解液内で電
気分解が進むと、陰極となる上記鋼製の外輪２や芯金１
４側に水酸イオンが生じ、この外輪２や芯金１４の周囲
（同図の斜格子で示す部分）がアルカリ性となる。For example, in the case of a rolling bearing unit 1 incorporated in an automobile as shown in FIG. 1, water containing sodium chloride (salt) contained in seawater near the shore and snow melting agent in a snow-covered area. Water containing sodium chloride, potassium chloride, or the like may adhere to the periphery of the rolling bearing unit 1. Then, water containing such an easily ionizable substance such as sodium chloride or potassium chloride is mixed with a metal core 14 constituting the steel outer ring 2 and the seal ring 13 and a light alloy, as indicated by a satin finish in FIG. When it adheres so as to cover the knuckle 4 made of water, the water containing the easily ionized substance becomes an electrolytic solution to constitute a battery. Then, a current flows as indicated by an arrow α in the same figure, and when the electrolysis proceeds in the electrolytic solution based on this current, the steel outer ring 2 and the metal core 1 serving as a cathode are formed.
Hydroxide ions are generated on the fourth side, and the periphery of the outer ring 2 and the metal core 14 (portion indicated by the oblique lattice in the figure) becomes alkaline.
【００１０】ところが、従来の転がり軸受装置の場合
は、この様に転がり軸受装置の周囲がアルカリ環境にな
る事を考慮をしていない。この為、この転がり軸受装置
を構成する外輪相当部材（外輪２）や内輪相当部材（ハ
ブ７）に固定する、金属製の芯金にニトリルブタジエン
ゴムにより造られた弾性材を添着して成る付属部材、例
えば、シールリングや回転状態検出用エンコーダ等の周
囲が、上述の様なアルカリ環境になった場合に、早期に
損傷する可能性がある。即ち、従来の付属部材は上記弾
性材と芯金とを熱硬化性接着剤により分離不能に接着し
ているが、この熱硬化性接着剤は、この弾性材を加硫成
形するの際の加熱によって硬化させただけである。とこ
ろが、この熱硬化性接着剤として一般的に用いられるフ
ェノール系の接着剤は、この様な加硫成形の際の加熱だ
けでは十分に硬化が進まず、アルカリ環境に対しての耐
久性を十分に確保できない。この結果、長期間に亙って
上述の様なアルカリ性の環境で使用した場合に、この熱
硬化性接着剤の接着力が低下若しくは喪失し、上記弾性
材が上記芯金から剥離する可能性がある。However, in the case of the conventional rolling bearing device, no consideration is given to the fact that the surroundings of the rolling bearing device will be in an alkaline environment. For this reason, an attachment made by attaching an elastic material made of nitrile butadiene rubber to a metal core fixed to the outer ring equivalent member (outer ring 2) and the inner ring equivalent member (hub 7) constituting the rolling bearing device. When the surroundings of the members, for example, the seal ring and the encoder for detecting the rotation state, etc., are in an alkaline environment as described above, there is a possibility that they will be damaged early. That is, in the conventional accessory member, the elastic material and the core metal are inseparably bonded by a thermosetting adhesive, but the thermosetting adhesive is heated during vulcanization molding of the elastic material. Only cured. However, phenolic adhesives, which are generally used as thermosetting adhesives, do not sufficiently cure only by heating during such vulcanization molding, and have sufficient durability in an alkaline environment. Cannot be secured. As a result, when used in the above-described alkaline environment for a long period of time, the adhesive strength of the thermosetting adhesive may be reduced or lost, and the elastic material may peel off from the core metal. is there.
【００１１】尚、上記弾性材として成形性が良好でない
合成ゴム、例えばアクリルゴムを使用する場合は、加硫
成形を２回行なう為、上記熱硬化性接着剤を２回加熱す
る事になる。この為、この熱硬化性接着剤が十分硬化
し、アルカリ環境に対しての耐久性が向上する。但し、
加硫成形を２回に分けて行なう目的は、上記アクリルゴ
ム等の合成ゴムの成形性を確保する為であり、アルカリ
環境に対する熱硬化性接着剤の耐久性を確保する為では
ない。又、アクリルゴムを弾性材として使用すると、ニ
トリルブタジエンゴムを使用する場合に比べて、コスト
が嵩む事が避けられない。本発明の転がり軸受装置及び
転がり軸受装置用付属部材の製造方法は、上述の様な事
情に鑑みて発明したものである。When a synthetic rubber having poor moldability, for example, acrylic rubber, is used as the elastic material, the thermosetting adhesive is heated twice because vulcanization molding is performed twice. For this reason, the thermosetting adhesive is sufficiently cured, and the durability in an alkaline environment is improved. However,
The purpose of performing the vulcanization molding in two steps is to ensure the moldability of the synthetic rubber such as the acrylic rubber, but not to ensure the durability of the thermosetting adhesive to an alkaline environment. In addition, when acrylic rubber is used as the elastic material, the cost is unavoidably increased as compared with the case where nitrile butadiene rubber is used. The manufacturing method of the rolling bearing device and the accessory member for the rolling bearing device of the present invention has been invented in view of the above-mentioned circumstances.
【００１２】[0012]
【課題を解決するための手段】本発明の転がり軸受装置
は、従来から広く使用されている転がり軸受装置と同様
に、内周面に外輪軌道を有する外輪相当部材と、外周面
に内輪軌道を有する内輪相当部材と、これら外輪軌道と
内輪軌道との間に転動自在に設けられた複数個の転動体
とを備える。そして、金属製の芯金にニトリルブタジエ
ンゴムにより造られた弾性材を熱硬化性接着剤により添
着して成る付属部材を、上記外輪相当部材若しくは内輪
相当部材に固定している。尚、この付属部材としては、
例えば、シールリングや回転状態検出用エンコーダ等が
挙げられる。特に、本発明の転がり軸受装置に於いて
は、上記芯金の表面で上記弾性材を添着すべき部分に熱
硬化性接着剤を付着させた状態でこの弾性材を加硫成形
した後、二次加熱を行なう事により上記熱硬化性接着剤
を更に硬化させて、この熱硬化性接着剤のアルカリ環境
に対する耐性を向上させている。A rolling bearing device according to the present invention comprises a member corresponding to an outer ring having an outer raceway on an inner peripheral surface and an inner raceway on an outer peripheral surface, similarly to a rolling bearing device widely used in the past. And a plurality of rolling elements rotatably provided between the outer raceway and the inner raceway. Then, an attached member formed by attaching an elastic material made of nitrile-butadiene rubber to a metal core with a thermosetting adhesive is fixed to the above-described member corresponding to the outer ring or the member corresponding to the inner ring. In addition, as this attached member,
For example, a seal ring, a rotation state detection encoder, and the like can be given. In particular, in the rolling bearing device of the present invention, the elastic material is vulcanized and formed in a state in which a thermosetting adhesive is adhered to a portion of the surface of the core metal where the elastic material is to be attached. By performing the next heating, the thermosetting adhesive is further hardened to improve the resistance of the thermosetting adhesive to an alkaline environment.
【００１３】又、本発明の転がり軸受装置用付属部材の
製造方法は、金属製の芯金にニトリルブタジエンゴムに
より造られた弾性材を熱硬化性接着剤により添着して成
り、転がり軸受装置を構成する外輪相当部材若しくは内
輪相当部材に固定する転がり軸受装置用付属部材の製造
方法であって、上記芯金に上記弾性材を添着する為に、
この芯金の表面でこの弾性材を添着すべき部分に熱硬化
性接着剤を付着させた状態で、この弾性材を加硫成形し
た後、二次加熱を行なう事によりこの熱硬化性接着剤を
更に硬化させる。Further, a method of manufacturing an accessory member for a rolling bearing device according to the present invention is characterized in that an elastic material made of nitrile-butadiene rubber is attached to a metal core with a thermosetting adhesive, and the rolling bearing device is manufactured. A method of manufacturing an auxiliary member for a rolling bearing device to be fixed to an outer ring-equivalent member or an inner ring-equivalent member to constitute, in order to attach the elastic material to the core metal,
After the elastic material is vulcanized and formed in a state where the thermosetting adhesive is adhered to the portion where the elastic material is to be attached on the surface of the core metal, the thermosetting adhesive is subjected to secondary heating. Is further cured.
【００１４】[0014]
【作用】上述の様な本発明の転がり軸受装置用付属部材
の製造方法により造られる付属部材を組み込んだ、本発
明の転がり軸受装置の場合、この付属部材を構成する芯
金と弾性材とを分離不能に接着する熱硬化性接着剤が、
アルカリ環境に対する耐性を持っている。即ち、上記芯
金の表面で上記弾性材を添着すべき部分に熱硬化性接着
剤を付着させた状態でこの弾性材を加硫成形した後、二
次加熱する事により、この熱硬化性接着剤を十分に硬化
させ、アルカリ環境に対する耐久性を向上させている。
この結果、互いに金属電位が異なる軽合金製の部材と鋼
製の部材とが隣り合った部分に導電性の液体（電解質の
水溶液）が付着し、この導電性の液体内で電気分解が進
む事により、上記付属部材の周囲がアルカリ環境になっ
ても、上記熱硬化性接着剤の接着力が急激に低下する事
はない。従って、この様なアルカリ環境で上記付属部材
を長期間に亙って使用しても、上記弾性材と芯金とが分
離せず、この付属部材の性能を十分に発揮できる。In the case of the rolling bearing device of the present invention incorporating the accessory member manufactured by the above-described method for manufacturing the accessory member for a rolling bearing device of the present invention, the core metal and the elastic material constituting the accessory member are combined. A thermosetting adhesive that adheres inseparably,
Has resistance to alkaline environment. That is, the elastic material is vulcanized and formed in a state where the thermosetting adhesive is adhered to the portion of the core metal to which the elastic material is to be attached, and then subjected to secondary heating to thereby obtain the thermosetting adhesive. The agent is sufficiently cured to improve durability against an alkaline environment.
As a result, a conductive liquid (aqueous solution of electrolyte) adheres to a portion where a light alloy member and a steel member having different metal potentials are adjacent to each other, and electrolysis proceeds in the conductive liquid. Accordingly, even if the surroundings of the accessory member become an alkaline environment, the adhesive strength of the thermosetting adhesive does not suddenly decrease. Therefore, even if the accessory member is used for a long time in such an alkaline environment, the elastic material and the core metal are not separated, and the performance of the accessory member can be sufficiently exhibited.
【００１５】[0015]
【発明の実施の形態】図１は、本発明の実施の形態の第
１例として、自動車の車輪を懸架装置に対して回転自在
に支持する為の転がり軸受ユニット１に、本発明を適用
した場合に就いて示している。尚、この転がり軸受ユニ
ット１の基本構成は、前述の本発明の対象となる転がり
軸受装置の１例としてこの図１を使用して説明した通り
であるから、重複する説明は省略若しくは簡略にし、以
下、本発明の特徴部分を中心に説明する。FIG. 1 shows a first embodiment of the present invention, in which the present invention is applied to a rolling bearing unit 1 for rotatably supporting wheels of an automobile with respect to a suspension device. The case is shown. The basic configuration of the rolling bearing unit 1 is the same as that described above with reference to FIG. 1 as an example of the rolling bearing device to which the present invention is applied. Hereinafter, the description will focus on the features of the present invention.
【００１６】この転がり軸受ユニット１を構成する外輪
２の外端部内周面に、請求項に記載した付属部材に相当
するシールリング１３を、締まり嵌めにより内嵌固定し
ている。このシールリング１３は、鋼板等の金属板にプ
レス加工を施す事により、断面略Ｌ字形で全体を円環状
に形成した芯金１４に、ニトリルブタジエンゴム製の弾
性材１５を添着して成る。これら芯金１４と弾性材１５
とは、フェノール系接着剤等の熱硬化性接着剤により、
互いに分離不能に接着している。又、上記熱硬化性接着
剤は、上記芯金１４の表面で上記弾性材１５を添着すべ
き部分にこの熱硬化性接着剤を付着させた状態でこの弾
性材１５を加硫成形した後、二次加熱して硬化させる事
により、アルカリ環境に対する耐性を向上させている。A seal ring 13 corresponding to an attached member described above is fixedly fitted to the inner peripheral surface of the outer end of the outer race 2 constituting the rolling bearing unit 1 by interference fitting. The seal ring 13 is formed by pressing a metal plate such as a steel plate or the like to attach a resilient material 15 made of nitrile butadiene rubber to a metal core 14 having a substantially L-shaped cross section and an entire ring shape. These core metal 14 and elastic material 15
Is a thermosetting adhesive such as a phenolic adhesive,
They are inseparably bonded to each other. Further, the thermosetting adhesive is formed by vulcanizing the elastic material 15 in a state where the thermosetting adhesive is adhered to a portion of the core metal 14 to which the elastic material 15 is to be attached, By curing by secondary heating, resistance to an alkaline environment is improved.
【００１７】即ち、この様なシールリング１３は、次の
様に製造する。先ず、上記弾性材１５を成形する為の金
型内に、上記熱硬化性接着剤を付着させた芯金１４をセ
ットする。次いで、この金型内に上記弾性材１５を構成
するニトリルブタジエンゴムの素材（加硫成形する前の
ニトリルブタジエンゴムであり、ニトリルブタジエンゴ
ムを構成する各種材料に硫黄等の各種配合剤を混練した
もの）を送り込む。そして、この加硫成形前の状態の弾
性材１５と上記芯金１４との間に上記熱硬化性接着剤を
介在させた状態で、この弾性材１５を加硫成形する。そ
して、この加硫成形の際の加熱によって硬化した上記熱
硬化性接着剤を更に硬化させるべく、この加硫成形後の
シールリングを再び加熱（二次加熱）する。That is, such a seal ring 13 is manufactured as follows. First, the core metal 14 to which the thermosetting adhesive is adhered is set in a mold for molding the elastic material 15. Next, a material of nitrile-butadiene rubber constituting the elastic material 15 (a nitrile-butadiene rubber before vulcanization molding, and various kinds of compounding agents such as sulfur were mixed with various materials constituting the nitrile-butadiene rubber in this mold. Stuff). Then, the elastic material 15 is vulcanized and formed in a state where the thermosetting adhesive is interposed between the elastic material 15 before the vulcanization molding and the core metal 14. Then, in order to further cure the thermosetting adhesive cured by heating during the vulcanization molding, the seal ring after the vulcanization molding is heated again (secondary heating).
【００１８】上述の様な本発明の転がり軸受装置用付属
部材の製造方法により造られる付属部材（シールリン
グ）１３を組み込んだ、前述の本発明の転がり軸受装置
（転がり軸受ユニット）１の場合、この付属部材１３を
構成する芯金１４と弾性材１５とを分離不能に接着する
熱硬化性接着剤が、アルカリ環境に対する優れた耐性を
持っている。即ち、上記芯金１４と弾性材１５との間に
熱硬化性接着剤を介在させた状態で、この熱硬化性接着
剤を加硫成形時と二次加熱時との２回加熱する事によ
り、この熱硬化性接着剤を十分に硬化させ、アルカリ環
境に対する耐久性を確保している。この結果、互いに金
属電位が異なる軽合金製のナックル４と鋼製の外輪２や
芯金１４とが隣り合った部分に、塩化ナトリウムや塩化
カリウム等を含んだ水が図１に梨地で示す様に付着し、
前述の発明が解決しようとする課題で説明した様に同図
斜格子で示す部分がアルカリ環境になっても、上記熱硬
化性接着剤の接着力が急激に低下する事はない。従っ
て、このアルカリ環境で上記付属部材１３を長期間に亙
って使用しても、上記弾性材１５と芯金１４とが分離せ
ず、この付属部材１３の性能を十分に発揮できる。In the case of the above-described rolling bearing device (rolling bearing unit) 1 incorporating the accessory member (seal ring) 13 produced by the above-described method for manufacturing the rolling bearing device accessory member of the present invention, The thermosetting adhesive which inseparably bonds the core metal 14 and the elastic material 15 constituting the accessory member 13 has excellent resistance to an alkaline environment. That is, in a state where the thermosetting adhesive is interposed between the cored bar 14 and the elastic material 15, the thermosetting adhesive is heated twice during vulcanization molding and during secondary heating. This thermosetting adhesive is sufficiently cured to ensure durability against an alkaline environment. As a result, water containing sodium chloride, potassium chloride, or the like is filled in a portion adjacent to the light alloy knuckle 4 having a different metal potential and the steel outer ring 2 or the metal core 14 as shown in FIG. Adheres to
As described in the problem to be solved by the above-mentioned invention, even if the portion indicated by the diagonal grid in the figure becomes an alkaline environment, the adhesive force of the thermosetting adhesive does not suddenly decrease. Therefore, even if the accessory member 13 is used for a long period of time in this alkaline environment, the elastic member 15 and the core metal 14 are not separated, and the performance of the accessory member 13 can be sufficiently exhibited.
【００１９】尚、本例は、自動車の車輪を懸架装置に対
して回転自在に支持する為の転がり軸受ユニットに、本
発明を適用した例を示したが、図１に示す様な転がり軸
受ユニット１に限定されるものではない。例えば、複列
の内輪軌道のうちの１方の内輪軌道を直接ハブに形成し
た構造の転がり軸受ユニットや、駆動輪を回転駆動する
為の車輪駆動用軸受ユニット等、各種構造の転がり軸受
ユニットに適用できる。又、この様な転がり軸受ユニッ
トだけでなく、工作機械等の各種機械装置に組み込むシ
ール板付転がり軸受等、各種転がり軸受装置にも適用で
きる。This embodiment shows an example in which the present invention is applied to a rolling bearing unit for rotatably supporting a wheel of an automobile with respect to a suspension device. However, a rolling bearing unit as shown in FIG. It is not limited to one. For example, rolling bearing units of various structures, such as a rolling bearing unit having a structure in which one inner ring raceway of a double row of inner ring raceways is formed directly on a hub, and a wheel driving bearing unit for rotating a driving wheel. Applicable. Further, the present invention can be applied not only to such a rolling bearing unit but also to various rolling bearing devices such as a rolling bearing with a seal plate incorporated in various machine devices such as machine tools.
【００２０】次に、図２は、本発明の実施の形態の第２
例として、上述の図１に示した転がり軸受ユニット１に
車輪の回転速度等を検出する為の回転状態検出用エンコ
ーダを取り付けた、回転状態検出用エンコーダ付転がり
軸受ユニット１６に、本発明を適用した例を示してい
る。この回転状態検出用エンコーダ付転がり軸受ユニッ
ト１６を構成する、内輪相当部材に相当するハブ７の外
端（図２の左端）寄り部に、同じく請求項に記載した付
属部材に相当するエンコーダ１７を、締まり嵌めにより
外嵌固定している。FIG. 2 shows a second embodiment of the present invention.
As an example, the present invention is applied to a rolling bearing unit 16 with a rotation state detection encoder in which a rotation state detection encoder for detecting a wheel rotation speed or the like is attached to the rolling bearing unit 1 shown in FIG. 1 described above. An example is shown. An encoder 17 corresponding to an accessory member described in the same claim is also provided at a portion closer to an outer end (left end in FIG. 2) of the hub 7 corresponding to an inner ring-equivalent member constituting the rolling bearing unit 16 with the encoder for detecting a rotation state. The outer fitting is fixed by interference fitting.
【００２１】このエンコーダ１７は、鋼板等の金属板に
プレス加工を施す事により、断面略Ｌ字形で全体を円環
状に形成した芯金１８に、ニトリルブタジエンゴムにフ
ェライト等の磁性材の粉末を混入した、請求項に記載し
た弾性材に相当する永久磁石１９を添着して成る。この
永久磁石１９は軸方向（図２の左右方向）に着磁され、
着磁方向は円周方向に関して交互に且つ互いに等間隔で
変化させている。従って、上記永久磁石１９の軸方向側
面には、Ｓ極とＮ極とが交互に且つ等間隔で配置されて
いる。又、上記芯金１８と永久磁石１９とは、フェノー
ル系接着剤等の熱硬化性接着剤により互いに分離不能に
接着している。そして、この熱硬化性接着剤は、上記芯
金１８と永久磁石１９との間にこの熱硬化性接着剤を介
在させた状態で、この永久磁石１９の加硫成形時と二次
加熱との２回加熱して硬化させる事により、アルカリ環
境に対する耐性を持たせている。従って、上記エンコー
ダ１７を外嵌したハブ７が軽合金製であったり、或はこ
のエンコーダ１７と軽合金製のナックル４とが近接して
いる等により、このエンコーダ１７を構成する鋼製の芯
金１８と軽合金製の隣接部材との間に電池が形成され、
この芯金１８部分がアルカリ性になっても、この芯金１
８と上記永久磁石１９との分離防止を有効に図れる。The encoder 17 is formed by pressing a metal plate such as a steel plate into a metal core 18 having a substantially L-shaped cross section and a ring shape as a whole. A permanent magnet 19, which corresponds to the elastic material described in the claims, is attached. This permanent magnet 19 is magnetized in the axial direction (left-right direction in FIG. 2),
The magnetization directions are changed alternately in the circumferential direction and at equal intervals from each other. Therefore, S poles and N poles are alternately arranged at equal intervals on the axial side surface of the permanent magnet 19. The core 18 and the permanent magnet 19 are inseparably bonded to each other by a thermosetting adhesive such as a phenolic adhesive. Then, this thermosetting adhesive is used in a state where the thermosetting adhesive is interposed between the cored bar 18 and the permanent magnet 19 at the time of vulcanization molding of the permanent magnet 19 and during the secondary heating. By curing by heating twice, resistance to an alkaline environment is imparted. Therefore, the hub 7 to which the encoder 17 is externally fitted is made of a light alloy, or the encoder 17 and the knuckle 4 made of a light alloy are close to each other. A battery is formed between the gold 18 and an adjacent member made of light alloy,
Even if the core 18 becomes alkaline, the core 1
8 can be effectively prevented from being separated from the permanent magnet 19.
【００２２】この様なエンコーダ１７を取り付けた回転
状態検出用エンコーダ付転がり軸受ユニット１６の使用
時は、図示しないセンサの検出部を、このエンコーダ１
７を構成する永久磁石１９の軸方向側面に、近接対向さ
せる。この状態で上記ハブ７に固定した図示しない車輪
が回転し、このハブ７に支持された上記エンコーダ１７
が回転すると、上記センサの検出部の近傍を、このエン
コーダ１７を構成する永久磁石１９の側面に配置したＳ
極とＮ極とが交互に通過する。この結果、上記センサの
検出部の出力が変化する。この様な出力変化の周波数
は、上記エンコーダ１７の回転速度に比例するので、こ
のセンサの出力を図示しない制御器に送れば、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）を適切に制御できる。その他
の構造及び作用は、前述した第１例の場合と同様であ
る。When the rolling bearing unit 16 with the encoder for detecting the rotation state to which the encoder 17 is attached is used, the detection unit of the sensor (not shown) is connected to the encoder 1.
7 is made to closely approach the side surface in the axial direction of the permanent magnet 19. In this state, wheels (not shown) fixed to the hub 7 rotate, and the encoder 17 supported by the hub 7 rotates.
Rotates, the vicinity of the detection unit of the sensor is placed on the side surface of the permanent magnet 19 constituting the encoder 17.
The pole and the north pole pass alternately. As a result, the output of the detection unit of the sensor changes. Since the frequency of such an output change is proportional to the rotation speed of the encoder 17, if the output of this sensor is sent to a controller (not shown), the antilock brake system (ABS) and the traction control system (TCS) can be properly controlled. Can control. Other structures and operations are the same as those of the first example described above.
【００２３】[0023]
【発明の効果】本発明は、以上に述べた通り構成され作
用する為、芯金と弾性材とから成る付属部材、例えばシ
ールリングや回転状態検出用エンコーダ等を、アルカリ
性の環境で長期間に亙って使用しても、この付属部材の
性能を十分に発揮できて、優れた耐久性を有する転がり
軸受装置を提供できる。According to the present invention, since the present invention is constructed and operated as described above, an attached member composed of a cored bar and an elastic material, such as a seal ring and an encoder for detecting a rotational state, can be used for a long time in an alkaline environment. Even when used over time, the performance of the attached member can be sufficiently exhibited, and a rolling bearing device having excellent durability can be provided.
【図１】本発明の実施の形態の第１例を示す半部断面
図。FIG. 1 is a half sectional view showing a first example of an embodiment of the present invention.
【図２】同第２例を示す半部断面図。FIG. 2 is a half sectional view showing the second example.
１ 転がり軸受ユニット ２ 外輪 ３ 外輪軌道 ４ ナックル ５ 係止溝 ６ 止め輪 ７ ハブ ８ ハブ本体 ９ａ、９ｂ 内輪 １０ 小径段部 １１ 内輪軌道 １２ 玉 １３ シールリング １４ 芯金 １５ 弾性材 １６ 回転状態検出用エンコーダ付転がり軸受ユニッ
ト １７ エンコーダ １８ 芯金 １９ 永久磁石DESCRIPTION OF SYMBOLS 1 Rolling bearing unit 2 Outer ring 3 Outer ring track 4 Knuckle 5 Locking groove 6 Retaining ring 7 Hub 8 Hub body 9a, 9b Inner ring 10 Small diameter step portion 11 Inner ring track 12 Ball 13 Seal ring 14 Core metal 15 Elastic material 16 For rotation state detection Rolling bearing unit with encoder 17 Encoder 18 Metal core 19 Permanent magnet
Claims (2)
と、外周面に内輪軌道を有する内輪相当部材と、これら
外輪軌道と内輪軌道との間に転動自在に設けられた複数
個の転動体とを備え、金属製の芯金にニトリルブタジエ
ンゴムにより造られた弾性材を熱硬化性接着剤により添
着して成る付属部材を、上記外輪相当部材若しくは内輪
相当部材に固定した転がり軸受装置に於いて、上記芯金
の表面で上記弾性材を添着すべき部分に熱硬化性接着剤
を付着させた状態で上記弾性材を加硫成形した後、二次
加熱を行なう事により上記熱硬化性接着剤を更に硬化さ
せて、この熱硬化性接着剤のアルカリ性の環境に対する
耐性を向上させた事を特徴とする転がり軸受装置。1. An outer race-equivalent member having an outer raceway on an inner peripheral surface, an inner race-equivalent member having an inner raceway on an outer peripheral surface, and a plurality of rollers provided rotatably between the outer raceway and the inner raceway. A rolling bearing device comprising: a rolling element; and an attached member formed by attaching an elastic material made of nitrile-butadiene rubber to a metal core with a thermosetting adhesive, to the outer ring-equivalent member or the inner ring-equivalent member. The vulcanization molding of the elastic material in a state in which a thermosetting adhesive is adhered to a portion of the core metal to which the elastic material is to be attached, followed by secondary heating to perform the thermosetting. A rolling bearing device characterized in that the thermosetting adhesive is further cured to improve the resistance of the thermosetting adhesive to an alkaline environment.
により造られた弾性材を熱硬化性接着剤により添着して
成り、転がり軸受装置を構成する外輪相当部材若しくは
内輪相当部材に固定する転がり軸受装置用付属部材の製
造方法であって、上記芯金に上記弾性材を添着する為
に、この芯金の表面で上記弾性材を添着すべき部分に熱
硬化性接着剤を付着させた状態で、この弾性材を加硫成
形した後、二次加熱を行なう事により上記熱硬化性接着
剤を更に硬化させる、転がり軸受装置用付属部材の製造
方法。2. A rolling bearing which is formed by attaching an elastic material made of nitrile-butadiene rubber to a metal core bar with a thermosetting adhesive, and which is fixed to a member corresponding to an outer ring or an inner ring constituting a rolling bearing device. A method of manufacturing an accessory for an apparatus, in which a thermosetting adhesive is attached to a portion of the surface of the metal core to which the elastic material is to be attached in order to attach the elastic material to the core metal. And a method of manufacturing an auxiliary member for a rolling bearing device, in which the thermosetting adhesive is further cured by performing secondary heating after vulcanizing and molding the elastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000170796A JP2001349331A (en) | 2000-06-07 | 2000-06-07 | Manufacturing method of rolling bearing device and accessory member for rolling bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000170796A JP2001349331A (en) | 2000-06-07 | 2000-06-07 | Manufacturing method of rolling bearing device and accessory member for rolling bearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001349331A true JP2001349331A (en) | 2001-12-21 |
Family
ID=18673453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000170796A Pending JP2001349331A (en) | 2000-06-07 | 2000-06-07 | Manufacturing method of rolling bearing device and accessory member for rolling bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001349331A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006085651A1 (en) * | 2005-02-14 | 2006-08-17 | Nsk Ltd. | Hub unit bearing |
| JP2006220270A (en) * | 2005-02-14 | 2006-08-24 | Nsk Ltd | Hub unit bearing |
| JP2006220269A (en) * | 2005-02-14 | 2006-08-24 | Nsk Ltd | Hub unit bearing |
| JP2006329724A (en) * | 2005-05-24 | 2006-12-07 | Nsk Ltd | Magnetic encoder and rolling bearing unit equipped therewith |
| JP2006329769A (en) * | 2005-05-25 | 2006-12-07 | Nsk Ltd | Magnetic encoder and rolling bearing unit equipped therewith |
| JP2007003223A (en) * | 2005-06-21 | 2007-01-11 | Nsk Ltd | Magnetic encoder and rolling bearing unit equipped with the same |
| JP2010019398A (en) * | 2008-07-14 | 2010-01-28 | Jtekt Corp | Rolling bearing device with sensor |
| CN105299056A (en) * | 2015-10-27 | 2016-02-03 | 浙江万向精工有限公司 | Integrated magnetic sealing device and integrated magnetic sealing ring |
-
2000
- 2000-06-07 JP JP2000170796A patent/JP2001349331A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006220270A (en) * | 2005-02-14 | 2006-08-24 | Nsk Ltd | Hub unit bearing |
| JP2006220269A (en) * | 2005-02-14 | 2006-08-24 | Nsk Ltd | Hub unit bearing |
| WO2006085651A1 (en) * | 2005-02-14 | 2006-08-17 | Nsk Ltd. | Hub unit bearing |
| US7901141B2 (en) | 2005-02-14 | 2011-03-08 | Nsk Ltd. | Hub unit bearing |
| JP4586558B2 (en) * | 2005-02-14 | 2010-11-24 | 日本精工株式会社 | Hub unit bearing |
| JP4586559B2 (en) * | 2005-02-14 | 2010-11-24 | 日本精工株式会社 | Hub unit bearing |
| JP2010266466A (en) * | 2005-05-24 | 2010-11-25 | Nsk Ltd | Magnetic encoder, and rolling bearing including the same |
| JP2006329724A (en) * | 2005-05-24 | 2006-12-07 | Nsk Ltd | Magnetic encoder and rolling bearing unit equipped therewith |
| JP4639953B2 (en) * | 2005-05-24 | 2011-02-23 | 日本精工株式会社 | Magnetic encoder and rolling bearing unit including the magnetic encoder |
| JP2006329769A (en) * | 2005-05-25 | 2006-12-07 | Nsk Ltd | Magnetic encoder and rolling bearing unit equipped therewith |
| JP2010271331A (en) * | 2005-05-25 | 2010-12-02 | Nsk Ltd | Magnetic encoder and rolling bearing unit including magnetic encoder |
| JP4639955B2 (en) * | 2005-05-25 | 2011-02-23 | 日本精工株式会社 | Magnetic encoder and rolling bearing unit including the magnetic encoder |
| JP2007003223A (en) * | 2005-06-21 | 2007-01-11 | Nsk Ltd | Magnetic encoder and rolling bearing unit equipped with the same |
| JP2011081008A (en) * | 2005-06-21 | 2011-04-21 | Nsk Ltd | Magnetic encoder and rolling bearing unit having the same |
| JP2010019398A (en) * | 2008-07-14 | 2010-01-28 | Jtekt Corp | Rolling bearing device with sensor |
| CN105299056A (en) * | 2015-10-27 | 2016-02-03 | 浙江万向精工有限公司 | Integrated magnetic sealing device and integrated magnetic sealing ring |
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