JP2012087901A - Sealing device and rolling bearing device - Google Patents

Sealing device and rolling bearing device Download PDF

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Publication number
JP2012087901A
JP2012087901A JP2010236252A JP2010236252A JP2012087901A JP 2012087901 A JP2012087901 A JP 2012087901A JP 2010236252 A JP2010236252 A JP 2010236252A JP 2010236252 A JP2010236252 A JP 2010236252A JP 2012087901 A JP2012087901 A JP 2012087901A
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Prior art keywords
sealing device
axial direction
slinger
flange
cylindrical
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Inventor
Kazutoshi Yamamoto
和俊 山本
Masahiro Tabata
正裕 田幡
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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
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/14—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load
    • F16C19/18—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls
    • F16C19/181—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact
    • F16C19/183—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles
    • F16C19/184—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement
    • F16C19/186—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for both radial and axial load with two or more rows of balls with angular contact with two rows at opposite angles in O-arrangement with three raceways provided integrally on parts other than race rings, e.g. third generation hubs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors

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

Abstract

PROBLEM TO BE SOLVED: To provide a sealing device not to be loosened off during transportation and assembling, and to provide a rolling bearing device having such a sealing device.SOLUTION: In a core metal member 70, cylindrical portion 71 and a radially extending portion 72 extending from the cylindrical portion 71 in a nearly radial direction are formed. In a slinger 61, a cylindrical portion 100 and a flange portion 101 extending from the cylindrical portion 100 in the nearly radial direction are formed. An elastic member 40 is formed with a lip portion 91 extending from a second portion 81 of a base 90 fixed to the radially extending portion 72 of the core metal member 70 to slide on the slinger 61. Moreover, the elastic member 40 is formed with a loosen-off prevention portion 92 extending from a first part 80 of the base 90 fixed to the cylindrical portion 71 of the core metal member 70 to a side opposite to the radially extending portion 72 side in an axial direction of the slinger 61 relative to the flange portion 101 so that a part of an end at the side opposite to the first part 80 laps over the flange portion 101 in the axial direction.

Description

本発明は、密封装置および転がり軸受装置に関する。   The present invention relates to a sealing device and a rolling bearing device.

従来、密封装置としては、実開平４−９３５７１号公報（特許文献１）に記載されているものがある。   Conventionally, as a sealing device, there is one described in Japanese Utility Model Publication No. 4-93571 (Patent Document 1).

この密封装置は、ハブユニットのインナーレースとアウターレースとの間に配置されている。この密封装置は、芯金部材と、芯金部材に固定された弾性部材と、断面Ｌ字状のスリンガと、ガータスプリングとを備える。上記スリンガは、軸方向延在部と、径方向延在部とからなり、上記弾性部材は、上記軸方向延在部に常に摺動するラジアルリップと、上記径方向延在部に摺動する第１アキシアルリップと、第１アキシアルリップの径方向の内方に位置すると共に、上記径方向延在部に摺動する第２アキシアルリップとを有する。上記第２アキシアルリップは、径方向の外方の表面に環状溝を有している。   This sealing device is disposed between the inner race and the outer race of the hub unit. The sealing device includes a metal core member, an elastic member fixed to the metal core member, a slinger having an L-shaped cross section, and a garter spring. The slinger includes an axially extending portion and a radially extending portion, and the elastic member slides on the radial lip that always slides on the axially extending portion and on the radially extending portion. A first axial lip; and a second axial lip that is positioned radially inward of the first axial lip and slides on the radially extending portion. The second axial lip has an annular groove on the outer surface in the radial direction.

上記ガータスプリングは、上記第２アキシアルリップの上記環状溝に嵌入されている。上記ガータスプリングは、第２アキシアルリップを径方向の内方に押圧する役割を果たしている。   The garter spring is fitted into the annular groove of the second axial lip. The garter spring plays a role of pressing the second axial lip inward in the radial direction.

上記従来の密封装置は、密封装置の搬送時に、上記ラジアルリップを、スリンガに圧入して、密封装置を一体化して、密封装置の運搬を行うようになっている。このようにして、各構成部材の紛失を防ぎ、また、密封装置の運送費を低減するようになっている。   In the conventional sealing device, the radial lip is press-fitted into a slinger when the sealing device is conveyed, and the sealing device is integrated to carry the sealing device. In this way, loss of each component member is prevented, and the transportation cost of the sealing device is reduced.

しかしながら、上記従来の密封装置では、密封部材の運送時に、振動等の外力によりラジアルリップがスリンガから離脱して、密封装置のばらけが発生することがある。そして、このばらけにより、密封装置を構成する各部材が紛失したり、上記各部材が他部材と衝突し易くなって、各部材に傷がつきやすいという問題がある。   However, in the conventional sealing device described above, when the sealing member is transported, the radial lip may be detached from the slinger by an external force such as vibration, and the sealing device may be scattered. Due to this variation, there is a problem that each member constituting the sealing device is lost or each member easily collides with another member, and each member is easily damaged.

また、密封装置の組み付け時にも、密封装置がばらけ易くて、密封装置を組み付けにくいという問題がある。   In addition, when the sealing device is assembled, there is a problem that the sealing device is easily separated and the sealing device is difficult to be assembled.

実開平４−９３５７１号公報（第１図）Japanese Utility Model Publication No. 4-93571 (FIG. 1)

そこで、本発明の課題は、搬送時や、組み付け時に、ばらけが発生することがない密封装置およびそのような密封装置を備える転がり軸受装置を提供することにある。   Then, the subject of this invention is providing the rolling bearing apparatus provided with such a sealing device which does not generate | occur | produce a dispersion | distribution at the time of conveyance and an assembly | attachment, and such a sealing device.

上記課題を解決するため、この発明の密封装置は、
筒状部と、この筒状部から上記筒状部の略径方向に延在する径方向延在部とを有する芯金部材と、上記芯金部材に固定された弾性部材とを有する密封部材と、
筒状部と、この筒状部から略上記径方向に延在するフランジ部とを有するスリンガと
を備え、
上記弾性部材は、
上記芯金部材の上記筒状部に固着された第１部分と、上記径方向延在部に固着された第２部分とを有する一体の基部と、
上記第２部分から延在して、上記スリンガに摺動するリップ部と、
上記第１部分から上記フランジ部の上記スリンガの軸方向の上記径方向延在部側とは反対側に延在して、上記第１部分側とは反対側の端部の少なくとも一部が上記軸方向に上記フランジ部に重なるばらけ防止部と
を有していることを特徴としている。 In order to solve the above problems, the sealing device of the present invention is:
A sealing member having a cylindrical part, a cored bar member having a radially extending part extending from the cylindrical part in a substantially radial direction of the cylindrical part, and an elastic member fixed to the cored bar member When,
A slinger having a cylindrical portion and a flange portion extending substantially in the radial direction from the cylindrical portion;
The elastic member is
An integral base portion having a first portion fixed to the cylindrical portion of the core member and a second portion fixed to the radially extending portion;
A lip extending from the second part and sliding on the slinger;
The flange extends from the first portion to the opposite side of the radially extending portion of the slinger in the axial direction, and at least a part of the end opposite to the first portion is at least part of the end portion. It has a scatter prevention part which overlaps with the above-mentioned flange part in the direction of an axis.

本発明によれば、弾性部材が、上記第１部分から上記フランジ部の上記軸方向の上記径方向延在部側とは反対側に延在して、上記第１部分側とは反対側の端部の少なくとも一部が軸方向にフランジ部に重なるばらけ防止部を有しているから、密封部材が、スリンガに対して軸方向に離れてスリンガから離脱しようとしても、上記ばらけ防止部が上記フランジ部に衝突することにより、フランジ部の軸方向の移動が阻止される。したがって、スリンガに対する密封部材の軸方向の所定距離以上の移動が起こることがなくて、密封部材がフランジ部から離脱することがなく、密封装置のばらけが発生することがない。したがって、密封装置の搬送時に、密封装置の構成部品の紛失が起こることがないと共に、上記構成部品に傷がつくことを大きく抑制できる。また、密封装置の組み付け時に密封装置のばらけが起こることがないから、密封装置の組み付けを迅速かつ容易に行うことができる。   According to the present invention, the elastic member extends from the first portion to the opposite side of the radial extension portion in the axial direction of the flange portion, and is on the side opposite to the first portion side. Since the at least part of the end portion has the anti-scattering portion that overlaps the flange portion in the axial direction, the above-described anti-separation portion even if the sealing member tries to separate from the slinger in the axial direction with respect to the slinger. Colliding with the flange portion prevents the flange portion from moving in the axial direction. Therefore, the sealing member does not move beyond a predetermined distance in the axial direction with respect to the slinger, the sealing member does not come off from the flange portion, and the sealing device does not scatter. Accordingly, the components of the sealing device are not lost when the sealing device is transported, and the components can be greatly prevented from being damaged. Further, since the sealing device does not vary when the sealing device is assembled, the sealing device can be assembled quickly and easily.

また、本発明の密封装置は、
軌道面を有する第１軌道部材と、
軌道面を有する第２軌道部材と、
上記第１軌道部材の上記軌道面と上記第２軌道部材の上記軌道面との間に配置された複数の転動体と、
上記第１軌道部材と上記第２軌道部材との間の軸方向の一方側の開口を密封する本発明の密封装置と
を備えることを特徴としている。 Moreover, the sealing device of the present invention comprises:
A first race member having a raceway surface;
A second race member having a raceway surface;
A plurality of rolling elements disposed between the raceway surface of the first raceway member and the raceway surface of the second raceway member;
It is characterized by comprising the sealing device of the present invention for sealing an opening on one axial side between the first track member and the second track member.

本発明によれば、密封装置の搬送時に、密封装置の構成部品の紛失が起こることがなく、また、上記構成部品に傷がつくことを大きく抑制できる。また、密封装置の組み付け時に密封装置のばらけが起こることがないから、密封装置の組み付けを迅速かつ容易に行うことができる。   According to the present invention, the components of the sealing device are not lost when the sealing device is conveyed, and it is possible to greatly suppress damage to the components. Further, since the sealing device does not vary when the sealing device is assembled, the sealing device can be assembled quickly and easily.

本発明の密封装置によれば、弾性部材が、芯金部材の筒状部に固着された第１部分からフランジ部の軸方向の径方向延在部側とは反対側に延在して、第１部分側とは反対側の端部の少なくとも一部が軸方向にフランジ部に重なるばらけ防止部を有しているから、フランジ部に対して軸方向に離れて密封装置がフランジ部から離脱しようとしても、ばらけ防止部がフランジ部に衝突することにより、フランジ部の軸方向の移動が阻止される。したがって、スリンガに対する密封部材の軸方向の所定距離以上の移動が起こることがなくて、密封装置がフランジ部から離脱することがなく、密封部材のばらけが発生することがない。したがって、密封装置の搬送時に、密封装置の構成部品の紛失が起こることがないと共に、上記構成部品に傷がつくことを大きく抑制できる。また、密封装置の組み付け時に密封装置のばらけが起こることがないから、密封装置の組み付けを迅速かつ容易に行うことができる。   According to the sealing device of the present invention, the elastic member extends from the first portion fixed to the cylindrical portion of the core metal member to the side opposite to the radially extending portion side in the axial direction of the flange portion, Since at least a part of the end portion on the opposite side to the first portion side has the anti-scattering portion that overlaps the flange portion in the axial direction, the sealing device is separated from the flange portion in the axial direction. Even if it is going to be separated, the movement of the flange portion in the axial direction is prevented by the collision preventing portion colliding with the flange portion. Therefore, the sealing member does not move beyond a predetermined distance in the axial direction with respect to the slinger, the sealing device does not come off from the flange portion, and the sealing member does not occur. Accordingly, the components of the sealing device are not lost when the sealing device is transported, and the components can be greatly prevented from being damaged. Further, since the sealing device does not vary when the sealing device is assembled, the sealing device can be assembled quickly and easily.

本発明の一実施形態である車輪用転がり軸受装置の軸方向の断面図である。It is sectional drawing of the axial direction of the rolling bearing apparatus for wheels which is one Embodiment of this invention. 第２密封装置を、図１の軸方向の他方側の外方から見たときの正面図である。It is a front view when the 2nd sealing device is seen from the outside on the other side in the axial direction of FIG. 図２のＢ’Ｂ線断面図であり、厚肉部を通過する密封装置の軸方向の断面図である。FIG. 3 is a cross-sectional view taken along line B′B of FIG. 2, and is an axial cross-sectional view of a sealing device that passes through a thick portion. 図２のＡ’Ａ線断面図であり、薄肉部を通過する密封装置の軸方向の断面図である。FIG. 3 is a cross-sectional view taken along line A′A in FIG. 2, and is an axial cross-sectional view of a sealing device that passes through a thin portion. 変形例における厚肉部を通過する密封装置の軸方向の断面図であり、変形例の密封装置における図３に対応する図である。It is sectional drawing of the axial direction of the sealing device which passes the thick part in a modification, and is a figure corresponding to FIG. 3 in the sealing device of a modification. 変形例における薄肉部を通過する密封装置の軸方向の断面図であり、変形例の密封装置における図４に対応する図である。It is sectional drawing of the axial direction of the sealing device which passes the thin part in a modification, and is a figure corresponding to FIG. 4 in the sealing device of a modification.

以下、本発明を図示の形態により詳細に説明する。   Hereinafter, the present invention will be described in detail with reference to the drawings.

図１は、本発明の一実施形態である車輪用転がり軸受装置の軸方向の断面図である。   FIG. 1 is a sectional view in the axial direction of a wheel rolling bearing device according to an embodiment of the present invention.

この車輪用転がり軸受装置は、第１軌道部材としての外輪２と、第２軌道部材としての内軸３と、第２軌道部材としての内輪４と、複数の第１の玉５と、複数の第２の玉６と、第１密封装置８と、第２密封装置９とを備える。上記第１の玉５および第２の玉６は、転動体を構成している。   This wheel rolling bearing device includes an outer ring 2 as a first race member, an inner shaft 3 as a second race member, an inner race 4 as a second race member, a plurality of first balls 5, and a plurality of A second ball 6, a first sealing device 8, and a second sealing device 9 are provided. The said 1st ball | bowl 5 and the 2nd ball | bowl 6 comprise the rolling element.

上記内軸３は、軸方向の一端部に、ブレーキディスク１１を取り付けるための径方向に広がる円板状のブレーキディスク取付用フランジ１０を有する。このブレーキディスク取付用フランジ１０の略中心を中心とする同心円上には、複数のボルト貫通穴が形成されている。上記ブレーキディスク取付用フランジ１０に、ブレーキディスク１１を当接させ、さらに、ブレーキディスク１１にホイール部材１３を当接させた状態で、ホイール部材１３のブレーキディスク１１側とは反対側の端面と、ブレーキディスク取付用フランジ１０との間を、複数のボルト１５で固定している。   The inner shaft 3 has a disc-shaped brake disk mounting flange 10 extending in the radial direction for mounting the brake disk 11 at one end in the axial direction. A plurality of bolt through holes are formed on a concentric circle centered on the approximate center of the brake disk mounting flange 10. With the brake disk 11 in contact with the brake disk mounting flange 10 and with the wheel member 13 in contact with the brake disk 11, an end surface of the wheel member 13 opposite to the brake disk 11 side; The brake disk mounting flange 10 is fixed with a plurality of bolts 15.

上記内軸３の軸方向の他端部には、内輪４が外嵌されて固定されている。上記内軸３における、内輪４と、ブレーキディスク取付用フランジ１０との間には、軌道面としてのアンギュラ型の軌道溝１６が形成されている。また、上記内輪４の外周面には、軌道面としてのアンギュラ型の軌道溝１７が形成されている。   An inner ring 4 is externally fitted and fixed to the other axial end portion of the inner shaft 3. An angular type raceway groove 16 as a raceway surface is formed between the inner ring 4 and the brake disc mounting flange 10 in the inner shaft 3. An angular type raceway groove 17 as a raceway surface is formed on the outer peripheral surface of the inner ring 4.

上記外輪２は、内軸３におけるブレーキディスク取付用フランジ１０よりも上記他端部側に、内軸３に径方向に対向するように、配置されている。上記外輪２は、軸方向の上記他端部側に、径方向に広がる車体側取付用フランジ１４を有する。この円板状の車体側取付用フランジ１４には、車体側取付用フランジ１４を車体側（ナックル）に取り付けるボルトを挿入するためのボルト貫通穴が複数形成されている。上記外輪２は、外輪２の内周面に軸方向に離間配置された第１軌道面としてのアンギュラ型の第１軌道溝２６および第２軌道面としてのアンギュラ型の第２軌道溝２７を有している。上記第１軌道溝２６は、第２軌道溝２７よりも上記一端部側に位置している。   The outer ring 2 is disposed on the other end side of the brake disc mounting flange 10 in the inner shaft 3 so as to face the inner shaft 3 in the radial direction. The outer ring 2 has a vehicle body side mounting flange 14 extending in the radial direction on the other end side in the axial direction. A plurality of bolt through holes for inserting bolts for attaching the vehicle body side mounting flange 14 to the vehicle body side (knuckle) are formed in the disk-shaped vehicle body side mounting flange 14. The outer ring 2 has an angular first raceway groove 26 as a first raceway surface and an angular second raceway groove 27 as a second raceway surface, which are spaced apart in the axial direction on the inner peripheral surface of the outer ring 2. is doing. The first track groove 26 is located on the one end side with respect to the second track groove 27.

上記複数の第１の玉５は、内軸３の軌道溝１６と外輪２の第１軌道溝２６との間に、保持器１８に保持された状態で、周方向に所定の間隔を隔てられて配置されている。また、上記複数の第２の玉６は、内輪４の軌道溝１７と外輪２の第２軌道溝２７との間に、保持器１９に保持された状態で、周方向に所定の間隔を隔てられて配置されている。   The plurality of first balls 5 are spaced by a predetermined interval in the circumferential direction while being held by the cage 18 between the raceway groove 16 of the inner shaft 3 and the first raceway groove 26 of the outer ring 2. Are arranged. The plurality of second balls 6 are spaced by a predetermined interval in the circumferential direction while being held by the cage 19 between the raceway groove 17 of the inner ring 4 and the second raceway groove 27 of the outer ring 2. Has been placed.

上記第１密封装置８は、内軸３と外輪２との間における、軸方向の上記一端部側（ブレーキディスク取付用フランジ１０側）の開口付近に配置されている。上記第１密封装置８は、内軸３と外輪２との間における上記一端部側の開口を密封している。   The first sealing device 8 is disposed in the vicinity of the opening on the one end side (the brake disc mounting flange 10 side) in the axial direction between the inner shaft 3 and the outer ring 2. The first sealing device 8 seals the opening on the one end side between the inner shaft 3 and the outer ring 2.

一方、上記第２密封装置９は、内輪４と外輪２との間における、軸方向の上記他端部側（車体取付用フランジ１４側）の開口付近に配置されている。上記第２密封装置９は、内輪４と外輪２との間における上記他端部側の開口を密封している。   On the other hand, the second sealing device 9 is disposed between the inner ring 4 and the outer ring 2 in the vicinity of the opening on the other end side (the vehicle body mounting flange 14 side) in the axial direction. The second sealing device 9 seals the opening on the other end side between the inner ring 4 and the outer ring 2.

図２は、上記第２密封装置９を、図１の軸方向の他方側の外方から見たときの正面図である。以下、図２、図３および図４を用いて、第２密封装置９の構造についての説明を行う。尚、上記第１密封装置８（図１参照）は、第２密封装置９と同一である。上記第１密封装置８については、第２密封装置９の説明をもってその説明を省略する。   FIG. 2 is a front view of the second sealing device 9 as viewed from the outside on the other side in the axial direction of FIG. Hereinafter, the structure of the second sealing device 9 will be described with reference to FIGS. 2, 3, and 4. The first sealing device 8 (see FIG. 1) is the same as the second sealing device 9. The description of the first sealing device 8 is omitted with the description of the second sealing device 9.

尚、図２において、参照番号４０は、密封部材の弾性部材を示し、参照番号４１は、弾性部材４０において芯金部材の円筒部の軸方向の端面を覆っている被覆部を示す。また、参照番号４２は、弾性部材４０において被覆部４１から屈曲している部分を示す。   In FIG. 2, reference numeral 40 indicates an elastic member of the sealing member, and reference numeral 41 indicates a covering portion that covers the axial end surface of the cylindrical portion of the metal core member in the elastic member 40. Reference numeral 42 indicates a portion of the elastic member 40 that is bent from the covering portion 41.

また、図２において、参照番号３１は、スリンガのフランジ部の第１径方向延在部を示し、参照番号３２は、上記フランジ部の内側屈曲部および第２径方向延在部を示す。これらの構造については、以下に詳述する。   In FIG. 2, reference numeral 31 indicates a first radially extending portion of the flange portion of the slinger, and reference numeral 32 indicates an inner bent portion and a second radially extending portion of the flange portion. These structures will be described in detail below.

図２に示すように、第２密封装置９（以下、単に、密封装置という）は、環状部材であって、円筒内周面３０を有する。この円筒内周面３０は、内輪４の外周面に締まり嵌めにより固定されるようになっている。   As shown in FIG. 2, the second sealing device 9 (hereinafter simply referred to as a sealing device) is an annular member and has a cylindrical inner peripheral surface 30. The cylindrical inner peripheral surface 30 is fixed to the outer peripheral surface of the inner ring 4 by an interference fit.

図２に示すように、弾性部材４０の軸方向の外方側の端面の径方向の長さは、周方向の位置に依存して、変動するようになっている。詳しくは、上記弾性部材４０の軸方向の端面は、径方向の肉厚が薄い薄肉部５０と、径方向の肉厚が連続的に変化する肉厚変動部５１と、径方向の肉厚が厚い厚肉部５２とを有し、肉厚変動部５１は、周方向において、薄肉部５０と、厚肉部５２との間に位置して、薄肉部５０と、厚肉部５２とを接続している。   As shown in FIG. 2, the radial length of the outer end face in the axial direction of the elastic member 40 varies depending on the position in the circumferential direction. Specifically, the axial end face of the elastic member 40 has a thin portion 50 having a thin radial thickness, a thickness varying portion 51 in which the radial thickness continuously changes, and a radial thickness. The thick variation portion 51 is located between the thin portion 50 and the thick portion 52 in the circumferential direction, and connects the thin portion 50 and the thick portion 52 to each other. is doing.

図２に示すように、上記薄肉部５０および厚肉部５２の夫々の径方向の寸法は、略一定になっている。また、上記肉厚変動部５１の径方向の肉厚は、薄肉部５０側から厚肉部５２側に周方向に行くにしたがって徐々に厚くなっている。   As shown in FIG. 2, the radial dimension of each of the thin portion 50 and the thick portion 52 is substantially constant. Further, the thickness in the radial direction of the thickness variation portion 51 gradually increases from the thin portion 50 side toward the thick portion 52 side in the circumferential direction.

図２に示すように、上記薄肉部５０および厚肉部５２の夫々は、周方向に等間隔に３箇所存在し、３つの薄肉部５０は、略同一になっており、３つの厚肉部５２も、略同一になっている。また、上記肉厚変動部５１は、周方向に６箇所存在し、各肉厚変動部５１の周方向の寸法は、略同一になっている。   As shown in FIG. 2, each of the thin portion 50 and the thick portion 52 exists at three positions at equal intervals in the circumferential direction, and the three thin portions 50 are substantially the same, and the three thick portions 52 is also substantially the same. Moreover, the said thickness fluctuation | variation part 51 exists in the circumferential direction, and the dimension of the circumferential direction of each thickness fluctuation | variation part 51 is substantially the same.

上記各厚肉部５２は、図２に矢印ｒ１［ｒａｄ］で示す周方向の幅を有する一方、各薄肉部５０およびその周方向の両側に位置する二つの肉厚変動部５１は、図２に矢印ｒ２［ｒａｄ］で示す周方向の幅を有している。   Each of the thick portions 52 has a circumferential width indicated by an arrow r1 [rad] in FIG. 2, while each thin portion 50 and two thickness varying portions 51 located on both sides in the circumferential direction are shown in FIG. Has a circumferential width indicated by an arrow r2 [rad].

図３は、図２のＢ’Ｂ線断面図であり、厚肉部５２を通過する密封装置９の軸方向の断面図である。尚、図３は、運転状態（使用状態）での密封装置９の断面図である。   FIG. 3 is a cross-sectional view taken along line B′B in FIG. 2, and is a cross-sectional view in the axial direction of the sealing device 9 passing through the thick portion 52. FIG. 3 is a cross-sectional view of the sealing device 9 in the operating state (use state).

図３に示すように、この密封装置９は、密封部材６０と、スリンガ６１とを備える。上記スリンガ６１は、筒状部１００と、フランジ部１０１とを有し、筒状部１００の内周面は、内輪４（図１）の外周面に締まり嵌めされている。また、上記フランジ部１０１は、筒状部１００から略径方向に延在している。図３に示すように、上記フランジ部１０１は、第１径方向延在部３１と、内側屈曲部１０４と、第２径方向延在部１０５とを有し、第１径方向延在部３１および第２径方向延在部１０５の夫々は、略径方向に延在している。上記内側屈曲部１０４は、第１径方向延在部３１の径方向の外方側の端部と、第２径方向延在部１０５の径方向の内方側の端部とを連結している。上記内側屈曲部１０４は、径方向の外方側に行くにしたがって、軸方向の内方側に屈曲し、軸方向の内方側に位置するようになっている。上記第２径方向延在部１０５は、第１径方向延在部１０３よりも軸方向の内方側に位置している。上記フランジ部１０１をこのように屈曲させることにより、フランジ部１０１の強度が大きくなるようにしている。尚、図２、図３を参照して、内側屈曲部１０４および第２径方向延在部１０５は、図２において、参照番号３２で示す部分に対応している。   As shown in FIG. 3, the sealing device 9 includes a sealing member 60 and a slinger 61. The slinger 61 has a cylindrical portion 100 and a flange portion 101, and the inner peripheral surface of the cylindrical portion 100 is tightly fitted to the outer peripheral surface of the inner ring 4 (FIG. 1). The flange portion 101 extends from the tubular portion 100 in a substantially radial direction. As shown in FIG. 3, the flange portion 101 includes a first radially extending portion 31, an inner bent portion 104, and a second radially extending portion 105, and the first radially extending portion 31. And each of the 2nd radial direction extension part 105 is extended in the substantially radial direction. The inner bent portion 104 connects the end portion on the radially outer side of the first radially extending portion 31 and the end portion on the radially inner side of the second radially extending portion 105. Yes. The inner bent portion 104 bends inward in the axial direction as it goes outward in the radial direction, and is positioned on the inward side in the axial direction. The second radially extending portion 105 is located on the inner side in the axial direction from the first radially extending portion 103. By bending the flange portion 101 in this way, the strength of the flange portion 101 is increased. 2 and 3, the inner bent portion 104 and the second radially extending portion 105 correspond to the portion indicated by reference numeral 32 in FIG. 2.

図３に示すように、上記密封部材６０は、芯金部材７０と、上記弾性部材４０とを有する。上記芯金部材７０は、筒状部７１と、径方向延在部７２とを有し、径方向延在部７２は、筒状部７１から筒状部７１の略径方向に延在している。   As shown in FIG. 3, the sealing member 60 includes a cored bar member 70 and the elastic member 40. The core bar member 70 has a cylindrical portion 71 and a radially extending portion 72, and the radially extending portion 72 extends from the tubular portion 71 in the substantially radial direction of the tubular portion 71. Yes.

上記弾性部材４０は、ゴム材等の弾性を有する材料からなっている。上記弾性部材４０は、基部９０と、リップ部９１と、ばらけ防止部９２とを有する。上記基部９０は、一体部材であって、第１部分８０と、第２部分８１とを有する。上記第１部分８０は、芯金部材７０の筒状部７１に固着されている一方、第２部分８１は、芯金部材７０の径方向延在部７２に固着されている。   The elastic member 40 is made of an elastic material such as a rubber material. The elastic member 40 includes a base portion 90, a lip portion 91, and a scattering prevention portion 92. The base portion 90 is an integral member and includes a first portion 80 and a second portion 81. The first part 80 is fixed to the cylindrical part 71 of the cored bar member 70, while the second part 81 is fixed to the radially extending part 72 of the cored bar member 70.

上記リップ部９１は、基部９０から延在してスリンガ６１に摺動している。詳しくは、上記リップ部９１は、アキシアルリップ８２と、ラジアルリップ８３と、グリースリップ８４とを有する。上記アキシアルリップ８２は、第２部分８１から径方向の外方かつ軸方向の外方に延在して、フランジ部１０１に摺動するようになっている。   The lip portion 91 extends from the base portion 90 and slides on the slinger 61. Specifically, the lip portion 91 has an axial lip 82, a radial lip 83, and a grease lip 84. The axial lip 82 extends from the second portion 81 outward in the radial direction and outward in the axial direction, and slides on the flange portion 101.

また、上記ラジアルリップ８３は、第２部分８１から径方向の内方かつ軸方向の外方に延在して、スリンガ６１の筒状部１００の外周面に摺動するようになっている。また、上記グリースリップ８４は、第２部分８１から径方向の内方かつ軸方向の内方側に延在して、スリンガ６１の筒状部１００の外周面に摺動している。   Further, the radial lip 83 extends radially inward and axially outward from the second portion 81, and slides on the outer peripheral surface of the cylindrical portion 100 of the slinger 61. The grease lip 84 extends radially inward and axially inward from the second portion 81 and slides on the outer peripheral surface of the cylindrical portion 100 of the slinger 61.

上記ばらけ防止部９２は、環状であり、第１部分８０からフランジ部１０１のスリンガ６１の軸方向の径方向延在部７２側とは反対側に略径方向に延在している。図３に示すように、上記ばらけ防止部９２において径方向に厚肉部５１に重なる部分は、軸方向にフランジ部１０１に重なっている。上記ばらけ防止部９２は、フランジ部１０１に対して軸方向に間隔をおいて位置している。このようにして、上記ばらけ防止部９２がフランジ部１０１に接触することに起因するトルクが、発生しないようにしている。   The anti-scattering portion 92 has an annular shape, and extends in a substantially radial direction from the first portion 80 to the side opposite to the radial extending portion 72 side of the slinger 61 of the flange portion 101. As shown in FIG. 3, the portion of the anti-scattering portion 92 that overlaps the thick portion 51 in the radial direction overlaps the flange portion 101 in the axial direction. The anti-scattering portion 92 is located at an interval in the axial direction with respect to the flange portion 101. In this way, the torque resulting from the contact between the anti-scattering portion 92 and the flange portion 101 is prevented from being generated.

図４は、図２のＡ’Ａ線断面図であり、薄肉部５０を通過する密封装置９の軸方向の断面図である。尚、図４は、運転状態（使用状態）での密封装置９の断面図である。また、図４における紙面の上方側が、図２における紙面の下方側に対応している。   4 is a cross-sectional view taken along line A′A of FIG. 2, and is a cross-sectional view in the axial direction of the sealing device 9 passing through the thin portion 50. FIG. 4 is a cross-sectional view of the sealing device 9 in the operating state (use state). Further, the upper side of the paper surface in FIG. 4 corresponds to the lower side of the paper surface in FIG.

図４に示すように、上記ばらけ防止部９２において径方向に薄肉部５０に重なる部分の内径は、フランジ部１０１の外周面の外径よりも若干大きくなっている。このようにして、上記薄肉部５０と、フランジ部１０１との間に径方向の僅かな隙間を設けて、密封部材６０と、スリンガ６１との間に位置して、密封装置９の遠心力により径方向の外方に移動した泥水等の異物が、上記径方向の僅かな隙間を介して、密封装置９の外部に排出され易いようにしている。   As shown in FIG. 4, the inner diameter of the portion that overlaps the thin portion 50 in the radial direction in the anti-scattering portion 92 is slightly larger than the outer diameter of the outer peripheral surface of the flange portion 101. In this way, a slight radial gap is provided between the thin wall portion 50 and the flange portion 101, and is positioned between the sealing member 60 and the slinger 61, and is caused by the centrifugal force of the sealing device 9. Foreign matter such as muddy water that has moved outward in the radial direction is easily discharged to the outside of the sealing device 9 through the slight gap in the radial direction.

図３および図４に示すように、上記ばらけ防止部９２において厚肉部５１に径方向に重なる部分が、軸方向にフランジ部１０１に重なっている一方、ばらけ防止部９２において薄肉部５０に径方向に重なる部分が、軸方向にフランジ部１０１に重ならないようになっている。したがって、この実施形態では、上記ばらけ防止部９２において各肉厚変動部５１（図２参照）に重なる部分の周方向の薄肉部５０側の一部が、フランジ部１０１に軸方向に重ならない一方、ばらけ防止部９２において各肉厚変動部５１（図２参照）に重なる部分の周方向の厚肉部５０側の一部が、フランジ部１０１に軸方向に重なるようになっている。   As shown in FIGS. 3 and 4, the portion of the anti-scattering portion 92 that overlaps the thick portion 51 in the radial direction overlaps the flange portion 101 in the axial direction, while the thin-walled portion 50 of the anti-scattering portion 92. The portion overlapping in the radial direction does not overlap the flange portion 101 in the axial direction. Therefore, in this embodiment, a part on the thin-walled portion 50 side in the circumferential direction of a portion that overlaps each thickness variation portion 51 (see FIG. 2) in the above-described scatter preventing portion 92 does not overlap the flange portion 101 in the axial direction. On the other hand, a part of the portion that overlaps each thickness variation portion 51 (see FIG. 2) on the side of the thick portion 50 in the circumferential direction overlaps the flange portion 101 in the axial direction.

上記実施形態の密封装置９によれば、上記弾性部材４０が、第１部分８０からフランジ部１０１の軸方向の径方向延在部７２側とは反対側に延在して、第１部分８０側とは反対側の端部の一部が、軸方向にフランジ部１０１に重なるばらけ防止部９２を有しているから、密封部材６０が、スリンガ６１に対して軸方向に離れてスリンガ６１から離脱しようとしても、ばらけ防止部９２の上記一部がフランジ部１０１に衝突することにより、フランジ部１０１の軸方向の移動が阻止される。したがって、上記スリンガ６１に対する密封部材９の軸方向の所定距離以上の移動が起こることがなくて、密封部材６０がフランジ部１０１から離脱することがなく、密封装置９のばらけが発生することがない。したがって、上記密封装置９の搬送時に、密封装置９の構成部品の紛失が起こることがないと共に、上記構成部品に傷がつくことを大きく抑制できる。また、上記密封装置９の組み付け時に密封装置９のばらけが起こることがないから、密封装置９の組み付けを迅速かつ容易に行うことができる。   According to the sealing device 9 of the above-described embodiment, the elastic member 40 extends from the first portion 80 to the opposite side to the radially extending portion 72 side of the flange portion 101 in the first portion 80. Since a part of the end portion opposite to the side has the anti-scattering portion 92 that overlaps the flange portion 101 in the axial direction, the sealing member 60 is separated from the slinger 61 in the axial direction, and the slinger 61 Even when trying to leave, the part of the anti-scattering portion 92 collides with the flange portion 101, thereby preventing the flange portion 101 from moving in the axial direction. Therefore, the sealing member 9 does not move more than a predetermined distance in the axial direction with respect to the slinger 61, the sealing member 60 does not separate from the flange portion 101, and the sealing device 9 does not scatter. . Therefore, the components of the sealing device 9 are not lost when the sealing device 9 is transported, and the components can be greatly prevented from being damaged. Further, since the sealing device 9 is not scattered when the sealing device 9 is assembled, the sealing device 9 can be assembled quickly and easily.

また、上記実施形態の密封装置９によれば、上記弾性部材４０が、第１部分８０からフランジ部１０１の軸方向の径方向延在部７２側とは反対側に延在して、第１部分８０側とは反対側の端部の一部が、軸方向にフランジ部１０１に重なるばらけ防止部９２を有しているから、スリンガ６１のフランジ部１０１の外側面に付着した泥水等の異物が、スリンガ６１の回転に基づく遠心力によって径方向の外方側に移動したとしても、その泥水等の異物を、ばらけ防止部９２の上記軸方向に重なる上記一部によって、はじくことができる。したがって、泥水等の異物が、密封部材６０とスリンガ６１との間に浸入することを抑制できて、密封性能が優れたものになる。   Further, according to the sealing device 9 of the above-described embodiment, the elastic member 40 extends from the first portion 80 to the side opposite to the axially extending portion 72 side in the axial direction of the flange portion 101, so that the first Since part of the end opposite to the portion 80 side has the anti-scattering portion 92 that overlaps the flange portion 101 in the axial direction, mud water or the like attached to the outer surface of the flange portion 101 of the slinger 61 Even if the foreign matter moves outward in the radial direction due to the centrifugal force based on the rotation of the slinger 61, the foreign matter such as muddy water may be repelled by the part overlapping the axial direction of the anti-scattering portion 92. it can. Therefore, foreign matter such as muddy water can be prevented from entering between the sealing member 60 and the slinger 61, and the sealing performance is excellent.

尚、上記実施形態の密封装置９では、ばらけ防止部９２が、周方向に互いに間隔をおいて位置する３箇所で、フランジ部１０１に軸方向に重なっていたが、この発明では、ばらけ防止部は、周方向に互いに間隔をおいて位置する２箇所または４箇所以上で、フランジ部に軸方向に重なっていても良い。また、この発明では、周方向に連続でない１箇所のみでフランジ部に軸方向に重なっていても良い。   In the sealing device 9 of the above embodiment, the anti-scattering portions 92 overlap the flange portion 101 in the axial direction at three positions that are spaced apart from each other in the circumferential direction. The prevention part may overlap with the flange part in the axial direction at two places or four or more places located at intervals in the circumferential direction. Moreover, in this invention, you may overlap the flange part in the axial direction only at one place which is not continuous in the circumferential direction.

また、上記実施形態の密封装置９では、ばらけ防止部９２において、フランジ部１０１に軸方向に重なる部分が、周方向に等間隔に配置され、かつ、離散的に配置されるフランジ部１０１に軸方向に重なる部分が、全て同一であった。しかしながら、この発明では、ばらけ防止部において、フランジ部に軸方向に重なる部分は、周方向に等間隔でない間隔で離間されて、配置されても良い。また、周方向に互いに間隔をおいて配置されるフランジ部に軸方向に重なる部分は、全て同一でなくても良い。   Further, in the sealing device 9 of the above embodiment, in the anti-scattering portion 92, the portions overlapping the flange portion 101 in the axial direction are arranged at equal intervals in the circumferential direction and discretely arranged on the flange portion 101. The overlapping parts in the axial direction were all the same. However, in the present invention, in the anti-scattering portion, the portions that overlap the flange portion in the axial direction may be spaced apart from each other at regular intervals in the circumferential direction. Further, the portions that overlap in the axial direction with the flange portions that are spaced apart from each other in the circumferential direction may not be the same.

また、上記実施形態の密封装置９では、ばらけ防止部９２が、周方向に互いに間隔をおいて位置する３箇所で、フランジ部１０１に軸方向に重なっていたが、この発明では、ばらけ防止部が、周方向に全周に亘ってフランジ部に軸方向に重なっていても良い。   Further, in the sealing device 9 of the above embodiment, the anti-scattering portion 92 overlaps the flange portion 101 in the axial direction at three locations that are spaced apart from each other in the circumferential direction. The prevention part may overlap the flange part in the axial direction over the entire circumference in the circumferential direction.

また、上記実施形態の密封装置９では、ばらけ防止部９２が、環状であって、ばらけ防止部の内径が周方向で変動する構成であったが、この発明では、ばらけ防止部は、環状でなくても良く、第１部分からスリンガ側に突出しなくてばらけ防止部が存在しない周方向の領域があっても良い。   Further, in the sealing device 9 of the above-described embodiment, the anti-scattering portion 92 is annular and the inner diameter of the anti-scattering portion varies in the circumferential direction. It may not be annular, and there may be a circumferential region that does not protrude from the first part to the slinger side and does not have a scattering prevention portion.

また、上記実施形態の密封装置９では、リップ部が、一つのアキシアルリップ８２と、二つのラジアルリップ８３,８４（この明細書では、外周面に摺動するリップをラジアルリップといい、軸方向の端面に摺動するリップをアキシアルリップという）を有していた。しかしながら、この発明では、アキシアルリップが、存在しなくても良く、アキシアルリップが、２以上あっても良い。また、この発明では、ラジアルリップが、存在しなくても良く、ラジアルリップが、１つのみであっても良く、また、ラジアルリップが、３以上あっても良い。要は、この発明では、弾性部材の基部の第２部分からスリンガに延在してスリンガに摺動するリップが、１以上あれば、リップの構成は、如何なるものであっても良い。   In the sealing device 9 of the above embodiment, the lip portion includes one axial lip 82 and two radial lips 83 and 84 (in this specification, a lip that slides on the outer peripheral surface is called a radial lip, and is The lip that slides on the end surface of the first lip is called an axial lip. However, in the present invention, the axial lip may not be present, and there may be two or more axial lips. In the present invention, there may be no radial lip, only one radial lip may be provided, and there may be three or more radial lips. In short, in the present invention, as long as one or more lips extend from the second portion of the base portion of the elastic member to the slinger and slide on the slinger, the configuration of the lip may be any.

また、上記実施形態の密封装置９では、ラジアルリップ８３は、ガータスプリングが存在しない構成であったが、図５、図６に示す変形例のように、ガータスプリング１０８が存在して、そのガータスプリング１０８で、ラジアルリップ１８３を径方向の内方側に付勢する構成であっても良い。尚、図５、図６の変形例は、図３、図４のラジアルリップ８３に換えて、外周面に環状溝１０７を有し、この環状溝１０７にガータスプリング１０８を嵌入したラジアルリップ１８３を用いたことが上記実施形態と異なる。上記ガータスプリング１０８は、ラジアルリップ１８３を径方向の内方に付勢して、ラジアルリップ１８３の密封性能を向上するようにしている。尚、図５は、変形例における厚肉部を通過する密封装置の軸方向の断面図であり、図６は、変形例における薄肉部を通過する密封装置の軸方向の断面図である。   Further, in the sealing device 9 of the above embodiment, the radial lip 83 has a configuration in which the garter spring does not exist. However, as in the modified examples shown in FIGS. The spring 108 may be configured to bias the radial lip 183 inward in the radial direction. 5 and 6, the radial lip 183 having an annular groove 107 on the outer peripheral surface and a garter spring 108 fitted into the annular groove 107 is used instead of the radial lip 83 shown in FIGS. 3 and 4. The use is different from the above embodiment. The garter spring 108 urges the radial lip 183 inward in the radial direction to improve the sealing performance of the radial lip 183. 5 is a sectional view in the axial direction of the sealing device that passes through the thick portion in the modified example, and FIG. 6 is a sectional view in the axial direction of the sealing device that passes through the thin portion in the modified example.

また、上記実施形態の密封装置９は、ラビリンスシールを有していなかったが、この発明では、ラビリンスシールを有していても良い。   Moreover, although the sealing device 9 of the said embodiment did not have a labyrinth seal, in this invention, you may have a labyrinth seal.

また、上記実施形態の密封装置９では、スリンガ６１が、内輪４の外周面に圧入される構成であったが、この発明では、スリンガは、内軸の外周面、外輪の内周面、ハウジングの内周面等に締まり嵌めされる構成であっても良い。   In the sealing device 9 of the above embodiment, the slinger 61 is press-fitted into the outer peripheral surface of the inner ring 4. However, in the present invention, the slinger includes the outer peripheral surface of the inner shaft, the inner peripheral surface of the outer ring, and the housing. It may be configured to be tightly fitted to the inner peripheral surface or the like.

また、上記実施形態の密封装置９では、芯金部材７０の筒状部７１が、直接外輪２の内周面に圧入固定されたが、この発明では、密封装置の芯金部材の筒状部は、弾性部材を介して間接的に軌道部材の周面（外周面でも、内周面でもどちらでも良い）に締まり嵌めで固定されても良い。   Further, in the sealing device 9 of the above embodiment, the cylindrical portion 71 of the core metal member 70 is directly press-fitted and fixed to the inner peripheral surface of the outer ring 2, but in this invention, the cylindrical portion of the core metal member of the sealing device May be indirectly fixed to the peripheral surface (either the outer peripheral surface or the inner peripheral surface) of the track member with an interference fit via an elastic member.

また、上記実施形態の車輪用転がり軸受装置では、本発明の密封装置が、第１軌道部材と、第２軌道部材との間の軸方向の一方側および他方側の両方に配置されたが、この発明の転がり軸受装置は、本発明の密封装置が、第１軌道部材と、第２軌道部材との間の軸方向の片側のみに配置されても良い。   Further, in the wheel rolling bearing device of the above embodiment, the sealing device of the present invention is disposed on both the one side and the other side in the axial direction between the first race member and the second race member. In the rolling bearing device of the present invention, the sealing device of the present invention may be disposed only on one side in the axial direction between the first race member and the second race member.

また、上記実施形態では、転がり軸受装置が、内輪４を有する車輪用転がり軸受装置であったが、この発明の転がり軸受装置は、内輪を有さない車輪用転がり軸受装置であっても良い。また、この発明の転がり軸受装置は、軌道面を有する部材が複数（２以上）の筒部材のみからなる構成であっても良い。また。この発明の転がり軸受装置は、ウォータポンプ、または、モータ等であっても良く、転動体および軌道面を有する如何なる転がり軸受装置であっても良い（尚、この明細書では、転がり軸受装置を、転動体と、この転動体が転動する軌道面とを有する装置として定義する）。   Moreover, in the said embodiment, although the rolling bearing apparatus was a wheel rolling bearing apparatus which has the inner ring | wheel 4, the rolling bearing apparatus of this invention may be a rolling bearing apparatus for wheels which does not have an inner ring | wheel. Further, the rolling bearing device of the present invention may be configured such that the member having the raceway surface is composed of only a plurality (two or more) of cylindrical members. Also. The rolling bearing device of the present invention may be a water pump, a motor, or the like, and may be any rolling bearing device having a rolling element and a raceway surface (in this specification, the rolling bearing device is It is defined as a device having a rolling element and a raceway surface on which the rolling element rolls).

また、この発明の転がり軸受装置は、転動体は、玉でなくて、ころであっても良い、また、玉ところの両方であっても良い。転動体が、ころであるとは、転動体が、円錐ころである場合、円筒ころである場合および凸面ころである場合を含むが、転動体がころである場合、転動体が円錐ころであると好ましい。   In the rolling bearing device of the present invention, the rolling element may be a roller instead of a ball, or may be both balls. The rolling element is a roller, including a case where the rolling element is a tapered roller, a case where it is a cylindrical roller, and a case where it is a convex roller, but when the rolling element is a roller, the rolling element is a tapered roller. And preferred.

また、この発明の転がり軸受装置は、第１軌道部材は、一体部材であっても、複数の部材（例えば、２分割内輪等であっても良い）からなっていても良く、第２軌道部材も、一体部材であっても、複数の部材からなっていても良い。また、この発明の転がり軸受は、転動体が、第１軌道部材の軸方向に単列で配置されても良く、転動体が、第１軌道部材の軸方向に２列以上に亘って配置されても良い。   In the rolling bearing device of the present invention, the first race member may be an integral member or may be composed of a plurality of members (for example, a split inner ring or the like). Moreover, even if it is an integral member, it may consist of several members. In the rolling bearing of the present invention, the rolling elements may be arranged in a single row in the axial direction of the first race member, and the rolling elements are arranged in two or more rows in the axial direction of the first race member. May be.

２ 外輪
３ 内軸
４ 内輪
５ 第１の玉
６ 第２の玉
８ 第１密封装置
９ 第２密封装置
１６ 内軸の軌道溝
１７ 内輪の軌道溝
２６ 外輪の第１軌道溝
２７ 外輪の第２軌道溝
４０ 弾性部材
６０ 密封部材
６１ スリンガ
７０ 芯金部材
７１ 芯金部材の筒状部
７２ 径方向延在部
８０ 第１部分
８１ 第２部分
９０ 基部
９１ リップ部
９２ ばらけ防止部
１００ スリンガの筒状部
１０１ フランジ部 2 outer ring 3 inner shaft 4 inner ring 5 first ball 6 second ball 8 first sealing device 9 second sealing device 16 inner shaft raceway groove 17 inner ring raceway groove 26 outer race first raceway groove 27 second outer race ring Track groove 40 Elastic member 60 Sealing member 61 Slinger 70 Core metal member 71 Cylindrical portion of core metal member 72 Radially extending portion 80 First portion 81 Second portion 90 Base portion 91 Lip portion 92 Anti-scattering portion 100 Slinger tube -Shaped part 101 Flange part

Claims (2)

筒状部と、この筒状部から上記筒状部の略径方向に延在する径方向延在部とを有する芯金部材と、上記芯金部材に固定された弾性部材とを有する密封部材と、
筒状部と、この筒状部から略上記径方向に延在するフランジ部とを有するスリンガと
を備え、
上記弾性部材は、
上記芯金部材の上記筒状部に固着された第１部分と、上記径方向延在部に固着された第２部分とを有する一体の基部と、
上記第２部分から延在して、上記スリンガに摺動するリップ部と、
上記第１部分から上記フランジ部の上記スリンガの軸方向の上記径方向延在部側とは反対側に延在して、上記第１部分側とは反対側の端部の少なくとも一部が上記軸方向に上記フランジ部に重なるばらけ防止部と
を有していることを特徴とする密封装置。 A sealing member having a cylindrical part, a cored bar member having a radially extending part extending from the cylindrical part in a substantially radial direction of the cylindrical part, and an elastic member fixed to the cored bar member When,
A slinger having a cylindrical portion and a flange portion extending substantially in the radial direction from the cylindrical portion;
The elastic member is
An integral base portion having a first portion fixed to the cylindrical portion of the core member and a second portion fixed to the radially extending portion;
A lip extending from the second part and sliding on the slinger;
The flange extends from the first portion to the opposite side of the radially extending portion of the slinger in the axial direction, and at least a part of the end opposite to the first portion is at least part of the end portion. A sealing device characterized by having an anti-scattering portion that overlaps the flange portion in the axial direction. 軌道面を有する第１軌道部材と、
軌道面を有する第２軌道部材と、
上記第１軌道部材の上記軌道面と上記第２軌道部材の上記軌道面との間に配置された複数の転動体と、
上記第１軌道部材と上記第２軌道部材との間の軸方向の一方側の開口を密封する請求項１に記載の密封装置と
を備えることを特徴とする転がり軸受装置。 A first race member having a raceway surface;
A second race member having a raceway surface;
A plurality of rolling elements disposed between the raceway surface of the first raceway member and the raceway surface of the second raceway member;
A rolling bearing device comprising: the sealing device according to claim 1, wherein an opening on one axial side between the first race member and the second race member is sealed.
JP2010236252A 2010-10-21 2010-10-21 Sealing device and rolling bearing device Pending JP2012087901A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2526545A (en) * 2014-05-26 2015-12-02 Skf Ab Radial seal with contacting and non-contacting portions
JP2016044810A (en) * 2014-08-26 2016-04-04 アクティエボラゲット・エスコーエッフ Low frictional dynamic seal
KR20230076539A (en) * 2021-11-24 2023-05-31 에스티엠(주) Seal device of wheel bearings equipped with functions to prevent inflow of foreign substances and induce discharge

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0493571U (en) * 1990-12-28 1992-08-13
JP2002206550A (en) * 2001-01-09 2002-07-26 Nsk Ltd Sealing device for rolling bearing
JP2007107674A (en) * 2005-10-17 2007-04-26 Uchiyama Mfg Corp Sealing device
JP2010185465A (en) * 2009-02-10 2010-08-26 Nsk Ltd Roller bearing unit with combination seal ring

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0493571U (en) * 1990-12-28 1992-08-13
JP2002206550A (en) * 2001-01-09 2002-07-26 Nsk Ltd Sealing device for rolling bearing
JP2007107674A (en) * 2005-10-17 2007-04-26 Uchiyama Mfg Corp Sealing device
JP2010185465A (en) * 2009-02-10 2010-08-26 Nsk Ltd Roller bearing unit with combination seal ring

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2526545A (en) * 2014-05-26 2015-12-02 Skf Ab Radial seal with contacting and non-contacting portions
JP2016044810A (en) * 2014-08-26 2016-04-04 アクティエボラゲット・エスコーエッフ Low frictional dynamic seal
KR20230076539A (en) * 2021-11-24 2023-05-31 에스티엠(주) Seal device of wheel bearings equipped with functions to prevent inflow of foreign substances and induce discharge
KR102620295B1 (en) * 2021-11-24 2024-01-02 에스티엠(주) Seal device of wheel bearings equipped with functions to prevent inflow of foreign substances and induce discharge

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