JP2012219971A - Rolling bearing device for wheel - Google Patents

Rolling bearing device for wheel Download PDF

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JP2012219971A
JP2012219971A JP2011089029A JP2011089029A JP2012219971A JP 2012219971 A JP2012219971 A JP 2012219971A JP 2011089029 A JP2011089029 A JP 2011089029A JP 2011089029 A JP2011089029 A JP 2011089029A JP 2012219971 A JP2012219971 A JP 2012219971A
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ring member
outer ring
peripheral surface
outer peripheral
flange
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JP5790110B2 (en
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Tatsunori Mori
達規 森
Takanobu Murakami
貴信 村上
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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
    • F16C33/80—Labyrinth sealings
    • F16C33/805—Labyrinth sealings in addition to other sealings, e.g. dirt guards to protect sealings with sealing lips
    • 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
    • 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
    • F16C33/7873—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 single sealing ring of generally L-shaped cross-section
    • F16C33/7876—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 single sealing ring of generally L-shaped cross-section with sealing lips

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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 rolling bearing device for a wheel enabling posterior installation of a cover member with respect to an outer peripheral face of one end of an outer ring member and capable of discharging intruded mud and dust even if the mud and dust intrude inside the cover member accidentally.SOLUTION: The rolling bearing device for the wheel includes: an inner ring member 11; the outer ring member 20; rolling elements 30, 31 arranged between the both inner ring and outer ring members 11, 20 so as to enable rolling; a seal member 40; and the cover member 51 protecting the seal member 40. The cover member 51 includes: a fixation part 52 which is formed to have a C-shaped cylindrical shape having an opened lower part so as to enable fitting from a radial outer side of the outer peripheral face of the one end of the outer ring member 20 and is fixed to the outer peripheral face of the one end of the outer ring member 20 by a fastening tool 56; and a cover part 53 extending from the fixation part 52 to a position closer to a flange 13 of the inner ring member 11, covering at least an upper half part of a clearance between the outer peripheral face of the one end of the outer ring member 20 and the flange 13 and having an opened lower part.

Description

この発明は車輪用転がり軸受装置に関する。   The present invention relates to a wheel rolling bearing device.

従来、車輪用転がり軸受装置においては、径方向外方に延びるフランジを有する内輪部材と、この内輪部材の外周に配設される外輪部材と、前記内輪部材と前記外輪部材との間に転動可能に配設される転動体と、前記内輪部材のフランジが形成される近傍の外周面とこれに対向する前記外輪部材の一端部内周面の間の環状空間に密封状に配設されるシール部材とを備えた構造のものが知られている。
また、外輪部材の一端部外周面とフランジとの間の隙間を覆ってシール部材を保護するために、例えば、特許文献１に開示されているように、外輪部材の一端部外周面には、覆い部材（密封部材）が取り付けられる。
この覆い部材は、外輪部材の一端部外周面に圧入によって固定される筒状の固定筒部と、この固定筒部からフランジに向けて延出されたシールリップとを備える。 Conventionally, in a rolling bearing device for a wheel, an inner ring member having a flange extending radially outward, an outer ring member disposed on an outer periphery of the inner ring member, and rolling between the inner ring member and the outer ring member. A rolling element arranged in a sealable manner, and a seal disposed in an annular space between an outer peripheral surface in the vicinity of which the flange of the inner ring member is formed and an inner peripheral surface of one end portion of the outer ring member opposed to the outer peripheral surface The thing of the structure provided with the member is known.
Moreover, in order to cover the gap between the outer peripheral surface of the one end portion of the outer ring member and the flange and protect the seal member, for example, as disclosed in Patent Document 1, A covering member (sealing member) is attached.
The cover member includes a cylindrical fixed tube portion that is fixed to the outer peripheral surface of one end portion of the outer ring member by press fitting, and a seal lip that extends from the fixed tube portion toward the flange.

国際公開番号ＷＯ２００６−００８８９８号公報International Publication Number WO2006-008898

ところで、特許文献１に開示されているように、外輪部材の一端部外周面に筒状の固定部を有する覆い部材が取り付けることによって、泥水や塵埃からシール部材を保護することができる。
しかしながら、覆い部材は、その固定筒部を外輪部材の一端部外周面に嵌込んで取り付ける構造上、内輪部材に外輪部材を組み付ける前の状態において、外輪部材の一端部外周面に覆い部材の固定筒部を嵌込んで取り付ける必要があり、後付けすることができない。
また、覆い部材の内部に泥水や塵埃が不測に浸入する場合があり、この場合には、覆い部材の内部に泥水や塵埃が溜まることがある。
そして、覆い部材の内部に泥水や塵埃が溜まると、その泥水や塵埃によって、シール部材が早期に摩耗され、シール性が悪化されることが想定される。 Incidentally, as disclosed in Patent Document 1, the sealing member can be protected from muddy water and dust by attaching a covering member having a cylindrical fixing portion to the outer peripheral surface of the one end portion of the outer ring member.
However, the cover member is fixed to the outer peripheral surface of one end of the outer ring member in a state before the outer ring member is assembled to the inner ring member because of the structure in which the fixed cylindrical portion is fitted and attached to the outer peripheral surface of the one end portion of the outer ring member. It is necessary to insert and attach the cylinder portion, and it cannot be retrofitted.
In addition, muddy water and dust may inadvertently enter the cover member, and in this case, muddy water and dust may accumulate inside the cover member.
When muddy water or dust accumulates inside the covering member, it is assumed that the muddy water or dust will quickly wear the seal member and deteriorate the sealing performance.

この発明の目的は、前記問題点に鑑み、外輪部材の一端部外周面に対し、覆い部材を後付けによって取り付けることを可能にすると共に、覆い部材の内部に泥水や塵埃が不測に浸入したとしても、浸入した泥水や塵埃を排出することができる車輪用転がり軸受装置を提供することである。   In view of the above problems, the object of the present invention is to allow the cover member to be attached to the outer peripheral surface of the one end portion of the outer ring member by retrofitting, and even if muddy water or dust intrudes into the cover member unexpectedly. Another object of the present invention is to provide a wheel rolling bearing device capable of discharging muddy water and dust that have entered.

前記課題を解決するために、この発明の請求項１に係る車輪用転がり軸受装置は、径方向外方に延びるフランジを有する内輪部材と、この内輪部材の外周に配設される外輪部材と、前記内輪部材と前記外輪部材との間に転動可能に配設される転動体と、前記内輪部材のフランジが形成される近傍の外周面とこれに対向する前記外輪部材の一端部内周面の間の環状空間に密封状に配設されるシール部材と、前記外輪部材の一端部外周面と前記フランジとの間の隙間を覆って前記シール部材を保護する覆い部材とを備えた車輪用転がり軸受装置であって、
前記覆い部材は、前記外輪部材の一端部外周面の径方向外方から嵌込まれて固定される下部が開口されたＣ字状に形成されると共に、前記外輪部材と前記フランジとの間の隙間の少なくとも上半部を覆う構成にしてあることを特徴とする。
ここで、外輪部材の一端部外周面に覆い部材を固定した状態において、覆い部材の上側部分を上部とし、下側部分を下部としている。 In order to solve the above problems, a rolling bearing device for a wheel according to claim 1 of the present invention includes an inner ring member having a flange extending radially outward, an outer ring member disposed on an outer periphery of the inner ring member, A rolling element disposed between the inner ring member and the outer ring member so as to be able to roll; an outer peripheral surface in the vicinity of which a flange of the inner ring member is formed; and an inner peripheral surface of one end portion of the outer ring member facing the outer peripheral surface. A rolling member for a wheel comprising: a sealing member disposed in a sealed manner in an annular space between the outer ring member; and a covering member that covers a gap between an outer peripheral surface of one end of the outer ring member and the flange to protect the sealing member. A bearing device,
The covering member is formed in a C-shape with a lower portion that is fitted and fixed from the outer side in the radial direction of the outer peripheral surface of the one end portion of the outer ring member, and between the outer ring member and the flange. It is the structure which covers at least the upper half part of the gap.
Here, in a state where the cover member is fixed to the outer peripheral surface of the one end portion of the outer ring member, the upper part of the cover member is the upper part and the lower part is the lower part.

前記構成によると、内輪部材に外輪部材を組み付けた後においても、覆い部材を後付けによって外輪部材の一端部外周面に固定することができる。
また、外輪部材の一端部外周面に覆い部材が固定された状態において、覆い部材によって、外輪部材の一端部外周面と内輪部材のフランジとの間の隙間を覆うことで、泥水や塵埃からシール部材を保護することができる。
また、仮に、覆い部材の内部に泥水や塵埃等が浸入したとしても、覆い部材の下部の開口部から泥水や塵埃等が外部に排出されるため、覆い部材の内部に泥水や塵埃が溜まることがない。 According to the said structure, even after attaching an outer ring member to an inner ring member, a cover member can be fixed to the outer peripheral surface of the one end part of an outer ring member by retrofitting.
Further, in a state where the cover member is fixed to the outer peripheral surface of the one end portion of the outer ring member, the cover member covers the gap between the outer peripheral surface of the one end portion of the outer ring member and the flange of the inner ring member, thereby sealing from muddy water and dust. The member can be protected.
Also, even if muddy water or dust enters the inside of the cover member, muddy water or dust is discharged to the outside from the opening at the bottom of the cover member, so that muddy water or dust accumulates inside the cover member. There is no.

請求項２に係る車輪用転がり軸受装置は、請求項１に記載の車輪用転がり軸受装置であって、
覆い部材は、外輪部材の一端部外周面の径方向外方から嵌込み可能に下部が開口されたＣ字筒状に形成され、かつ前記外輪部材の一端部外周面に留め具によって固定される固定部と、
前記固定部から前記フランジに接近する位置まで延出されて前記外輪部材の一端部外周面と前記フランジとの間の隙間の少なくとも上半部を覆うと共に、下部が開放された覆い部とを備えていることを特徴とする。 The rolling bearing device for a wheel according to claim 2 is the rolling bearing device for a wheel according to claim 1,
The cover member is formed in a C-shaped cylindrical shape having a lower portion opened so as to be fitted from the radially outer side of the outer peripheral surface of the one end portion of the outer ring member, and is fixed to the outer peripheral surface of the one end portion of the outer ring member by a fastener. A fixed part;
A cover portion extending from the fixed portion to a position approaching the flange and covering at least an upper half portion of a gap between the outer peripheral surface of the one end portion of the outer ring member and the flange, and having a lower portion opened. It is characterized by.

前記構成によると、外輪部材の一端部外周面の径方向外方から覆い部材のＣ字筒状の固定部を嵌込んで留め具によって安定よく固定することができる。   According to the said structure, the C-shaped cylindrical fixing | fixed part of a cover member can be inserted from the radial direction outer side of the one end part outer ring member, and it can fix stably with a fastener.

請求項３に係る車輪用転がり軸受装置は、請求項２に記載の車輪用転がり軸受装置であって、
外輪部材の一端部外周面には、覆い部材の固定部が嵌込まれて同固定部の軸方向への移動を阻止する嵌込み溝が形成されていることを特徴とする。 The rolling bearing device for a wheel according to claim 3 is the rolling bearing device for a wheel according to claim 2,
A fitting groove is formed on the outer circumferential surface of the one end portion of the outer ring member to prevent the movement of the fixing portion in the axial direction by fitting the fixing portion of the cover member.

前記構成によると、外輪部材の一端部外周面の嵌込み溝に覆い部材の固定部が嵌込まれて軸方向への移動が阻止されるため、覆い部材の覆い部によって、外輪部材の一端部外周面と内輪部材のフランジとの間の隙間を常に良好に覆うことができる。   According to the above configuration, since the fixing portion of the covering member is fitted into the fitting groove on the outer peripheral surface of the one end portion of the outer ring member and the movement in the axial direction is prevented, the one end portion of the outer ring member is covered by the covering portion of the covering member. The gap between the outer peripheral surface and the flange of the inner ring member can always be satisfactorily covered.

この発明の実施例１に係る車輪用転がり軸受装置を示す縦断面図である。It is a longitudinal cross-sectional view which shows the rolling bearing device for wheels which concerns on Example 1 of this invention. 同じく車輪用転がり軸受装置の外輪部材の一端部外周面に覆い部材が取り付けられた状態における覆い部の上端部を拡大して示す縦断面図である。It is a longitudinal cross-sectional view which expands and shows the upper end part of the cover part in the state by which the cover member was similarly attached to the outer peripheral surface of the one end part of the outer ring member of the rolling bearing apparatus for wheels. 同じく車輪用転がり軸受装置の外輪部材の一端部外周面に覆い部材が取り付けられた状態における覆い部の下端部を拡大して示す縦断面図である。It is a longitudinal cross-sectional view which expands and shows the lower end part of the cover part in the state where the cover member was similarly attached to the outer peripheral surface of the one end part of the outer ring member of the rolling bearing device for wheels. 同じく覆い部材と、留め具としてのインシュロックタイとを示す斜視図である。It is a perspective view which similarly shows a covering member and an insulation lock tie as a fastener. 同じく留め具がＣ字状の弾性ワイヤで構成された実施態様を示す斜視図である。It is a perspective view which shows the embodiment in which the fastener was similarly comprised with the C-shaped elastic wire.

この発明を実施するための形態について実施例にしたがって説明する。   A mode for carrying out the present invention will be described in accordance with an embodiment.

図１に示すように、車輪用転がり軸受装置は、内輪部材１１と、外輪部材２０と、これら内輪部材１１と外輪部材２０との間に複列をなして転動可能に配設されかつ保持器３５、３６によって保持される複列の転動体３０、３１と、シール部材４０と、覆い部材５１とを備えている。
内輪部材１１（ハブホイールとも呼ばれることもある）は、ハブ軸１４と、このハブ軸１４の一端寄り外周面から径方向外方に延出されたフランジ１３とを一体に備え、フランジ１３には車輪を締め付けるための複数のハブボルト１２が所定ピッチで配設されている。
また、この実施例１において、外輪部材２０の一端部外周面には、後述する覆い部材５１の固定部５２が嵌込まれて同固定部５２の軸方向への移動を阻止する環状の嵌込み溝２５が形成されている。 As shown in FIG. 1, the wheel rolling bearing device is disposed and held so as to be capable of rolling in a double row between an inner ring member 11, an outer ring member 20, and the inner ring member 11 and the outer ring member 20. Double rows of rolling elements 30, 31 held by the vessels 35, 36, a seal member 40, and a cover member 51 are provided.
The inner ring member 11 (sometimes referred to as a hub wheel) is integrally provided with a hub shaft 14 and a flange 13 extending radially outward from an outer peripheral surface near one end of the hub shaft 14. A plurality of hub bolts 12 for tightening the wheels are arranged at a predetermined pitch.
Further, in the first embodiment, an annular fitting that prevents a movement of the fixing portion 52 in the axial direction by fitting a fixing portion 52 of a covering member 51 to be described later on the outer peripheral surface of one end portion of the outer ring member 20. A groove 25 is formed.

図２に示すように、シール部材４０は、内輪部材１１の一方（フランジ１３に近い方）の内輪軌道面６の内輪肩部６ａと、この内輪肩部６ａの外周面に対向する外輪部材２０の一端部内周面との間の環状空間に装着されてこの環状空間を密封する。
このシール部材４０は、芯金４１と弾性シール体４６とを備える。芯金４１は、外輪部材２０の一端部内周面に圧入されて固定される筒状部４２と、この筒状部４２の一端から径方向内方へ曲げ加工された環状部４３と、この環状部４３の内径端から斜め内方へ曲げられたテーパ部４４と、このテーパ部４４の先端から径方向内方へ曲げられた内径端部４５とを備えている。
弾性シール体４６は、芯金４１の一側面の環状部４３と、テーパ部４４と、内径端部４５との外側面に接着されて一体状をなしている。
そして、弾性シール体４６は、内輪部材１１のフランジ１３の基端部近傍に摺接するリップ４７と、内輪肩部６ａの外周面に摺接するリップ４８、４９とを備えている。 As shown in FIG. 2, the seal member 40 includes an inner ring shoulder 6a of the inner ring raceway surface 6 on one side (closer to the flange 13) of the inner ring member 11, and the outer ring member 20 facing the outer peripheral surface of the inner ring shoulder 6a. It is attached to an annular space between the inner peripheral surface of the one end portion and seals the annular space.
The seal member 40 includes a core metal 41 and an elastic seal body 46. The core metal 41 includes a cylindrical portion 42 that is press-fitted and fixed to the inner peripheral surface of one end portion of the outer ring member 20, an annular portion 43 that is bent radially inward from one end of the cylindrical portion 42, A tapered portion 44 bent obliquely inward from the inner diameter end of the portion 43 and an inner diameter end portion 45 bent radially inward from the tip of the tapered portion 44 are provided.
The elastic seal body 46 is bonded to the outer surface of the annular portion 43 on one side of the cored bar 41, the tapered portion 44, and the inner diameter end portion 45 so as to be integrated.
The elastic seal body 46 includes a lip 47 that is in sliding contact with the vicinity of the proximal end portion of the flange 13 of the inner ring member 11 and lips 48 and 49 that are in sliding contact with the outer peripheral surface of the inner ring shoulder 6a.

図２〜図４に示すように、覆い部材５１は、外輪部材２０の一端部外周面とフランジ１３との間の隙間を覆ってシール部材４０を保護する。
覆い部材５１は、外輪部材２０の一端部外周面の径方向外方から嵌込まれて固定される下部が開口されたＣ字状に形成されると共に、外輪部材２０とフランジ１３との間の隙間の少なくとも上半部を覆う構成にしてある。
この実施例１において、覆い部材５１は、合成樹脂材、ゴム等から形成され、固定部５２と、覆い部５３とを一体に有している。
固定部５２は、外輪部材２０の嵌込み溝２５の径方向外方から嵌込み可能に下部が開口されたＣ字筒状に形成されている。この実施例１において、固定部５２は、１８０度を越える（半円よりも長い周長を有する）円弧状に形成されている。
また、固定部５２の外周面には、留め具としての結束バンド５７（市販のインシュロックタイと呼ばれている留め具を用いることができる。）の軸方向へのずれ止めをなす溝５４が形成されている。
そして、固定部５２は、外輪部材２０の嵌込み溝２５の径方向外方から嵌込まれ、その固定部５２の溝５４に結束バンド５７が締結されることによって外輪部材２０の嵌込み溝２５に固定（締結）される。 As shown in FIGS. 2 to 4, the cover member 51 covers the gap between the outer peripheral surface of the one end portion of the outer ring member 20 and the flange 13 to protect the seal member 40.
The cover member 51 is formed in a C-shape with a lower portion that is fitted and fixed from the radially outer side of the outer peripheral surface of one end of the outer ring member 20, and between the outer ring member 20 and the flange 13. It is the structure which covers at least the upper half part of a clearance gap.
In the first embodiment, the cover member 51 is formed of a synthetic resin material, rubber, or the like, and integrally includes a fixed portion 52 and a cover portion 53.
The fixing portion 52 is formed in a C-shaped cylinder having a lower opening that can be fitted from the radially outer side of the fitting groove 25 of the outer ring member 20. In the first embodiment, the fixing portion 52 is formed in an arc shape exceeding 180 degrees (having a circumferential length longer than a semicircle).
In addition, a groove 54 is formed on the outer peripheral surface of the fixing portion 52 to prevent the binding band 57 (a commercially available fastener called a sea lock tie can be used) as a fastener in the axial direction. Has been.
The fixing portion 52 is fitted from the radially outer side of the fitting groove 25 of the outer ring member 20, and the binding band 57 is fastened to the groove 54 of the fixing portion 52, whereby the fitting groove 25 of the outer ring member 20. Fixed (fastened).

また、覆い部材５１の覆い部５３は、固定部５２の一端縁からフランジ１３に接近する位置まで延出されて外輪部材２０の一端部外周面とフランジ１３との間の隙間の少なくとも上半部を覆うと共に、下半部が開放されたＣ字状に形成されている。
また、この実施例１において、覆い部５３は、図２に示すように、上部が最も傾斜角度が大きく、図３に示すように、下部に向けてしだいに傾斜角度が小さくなっている。言い換えると、覆い部５３は、上部の延出長さが最も長く、下部に向けてしだいに短くなっている。これによって、覆い部材５１の材料費の節減や軽量化が図られている。
すなわち、泥水等が覆い部５３の上部傾斜面に跳ねかけられると、覆い部５３の上部傾斜面に沿って流れ、シール部材４０に向けて浸入することを防止している。また、覆い部５３の上部以外の側面においては、泥水等が跳ねかけられると下向きに流れるため、シール部材４０に向けて浸入され難い。 Further, the cover portion 53 of the cover member 51 is extended from one end edge of the fixing portion 52 to a position approaching the flange 13, and at least the upper half portion of the gap between the outer peripheral surface of the one end portion of the outer ring member 20 and the flange 13. Is formed in a C shape with the lower half opened.
In the first embodiment, the cover 53 has the largest inclination angle at the upper portion as shown in FIG. 2, and gradually becomes smaller toward the lower portion as shown in FIG. In other words, the cover 53 has the longest extension length at the top and gradually becomes shorter toward the bottom. Thereby, the material cost and weight reduction of the covering member 51 are achieved.
That is, when muddy water or the like is splashed on the upper inclined surface of the cover portion 53, the muddy water flows along the upper inclined surface of the cover portion 53 and is prevented from entering the seal member 40. Further, on the side surface other than the upper portion of the cover portion 53, when muddy water or the like is splashed, it flows downward, so that it is difficult to enter the seal member 40.

この実施例１に係る車輪用転がり軸受装置は上述したように構成される。
したがって、外輪部材２０の一端部外周面に覆い部材５１を固定する場合、覆い部材５１のＣ字筒状の固定部５２を外輪部材２０の嵌込み溝２５の径方向外方から嵌込み、固定部５２の溝５４に結束バンド５７を締結することによって、外輪部材２０の嵌込み溝２５に覆い部材５１を安定よく固定することができる。
このため、内輪部材１１の外周に複列の転動体３０、３１を介在させて外輪部材２０をを組み付けた後においても、覆い部材５１を後付けによって外輪部材２０の一端部外周面に容易に取り付けることができる。 The wheel rolling bearing device according to the first embodiment is configured as described above.
Accordingly, when the cover member 51 is fixed to the outer peripheral surface of the one end portion of the outer ring member 20, the C-shaped cylindrical fixing portion 52 of the cover member 51 is fitted and fixed from the radially outer side of the fitting groove 25 of the outer ring member 20. The covering member 51 can be stably fixed to the fitting groove 25 of the outer ring member 20 by fastening the binding band 57 to the groove 54 of the portion 52.
For this reason, even after the outer ring member 20 is assembled by interposing the double row rolling elements 30, 31 on the outer periphery of the inner ring member 11, the cover member 51 is easily attached to the outer peripheral surface of one end portion of the outer ring member 20 by retrofitting. be able to.

また、外輪部材２０の一端部外周面に覆い部材５１が取り付けられた状態において、覆い部材５１の覆い部５３によって、外輪部材２０の一端部外周面と内輪部材１１のフランジ１３との間の隙間を覆うことで、泥水や塵埃からシール部材４０を保護することができる。これによって、軸受内部を密封状態に維持することができる。
また、仮に、覆い部材５１の内部に泥水や塵埃が浸入したとしても、覆い部５３の下部の開口部から外部に排出されるため、覆い部材５１の内部に泥水や塵埃が溜まることがない。 Further, in a state where the cover member 51 is attached to the outer peripheral surface of the one end portion of the outer ring member 20, a gap between the outer peripheral surface of the one end portion of the outer ring member 20 and the flange 13 of the inner ring member 11 is covered by the cover portion 53 of the cover member 51. By covering the seal member 40, the seal member 40 can be protected from muddy water and dust. Thereby, the inside of the bearing can be maintained in a sealed state.
Even if muddy water or dust enters the inside of the cover member 51, the muddy water or dust does not accumulate inside the cover member 51 because it is discharged to the outside through the opening at the bottom of the cover portion 53.

また、この実施例１において、外輪部材２０の一端部外周面の嵌込み溝２５に覆い部材５１の固定部５２が嵌込まれて軸方向への移動が阻止される。このため、覆い部材５１の覆い部５３によって、外輪部材２０の一端部外周面と内輪部材１１のフランジ１３との間の隙間を常に良好に覆うことができる。   Further, in the first embodiment, the fixing portion 52 of the covering member 51 is fitted into the fitting groove 25 on the outer peripheral surface of the one end portion of the outer ring member 20 to prevent the movement in the axial direction. For this reason, the gap between the outer peripheral surface of the one end portion of the outer ring member 20 and the flange 13 of the inner ring member 11 can be always satisfactorily covered by the cover portion 53 of the cover member 51.

なお、この発明は前記実施例１に限定するものではなく、この発明の要旨を逸脱しない範囲内において、種々なる形態で実施することもできる。
例えば、前記実施例１においては、外輪部材２０の嵌込み溝２５の外周面に覆い部材５１の固定部５２を締結する留め具として、市販のインシュロックタイと呼ばれている結束バンド５７を用いた場合を例示したが、外輪部材２０の嵌込み溝２５の外周面に覆い部材５１の固定部５２を締結する留め具であればどのような構造の留め具を用いてもよい。例えば、図５に示すように、Ｃ字状の弾性ワイヤ５８によって外輪部材２０の嵌込み溝２５の外周面に覆い部材５１の固定部５２を締結してもよい。
また、外輪部材２０の一端部外周面に嵌込み溝２５を形成しなくてもこの発明を実施することが可能である。
また、覆い部材５１は、その基部を外輪部材２０の一端部外周面に接着剤等によって固定することも可能である。この場合には、Ｃ字筒状の固定部５２を必ずしも設けなくてもこの発明を実施可能である。 In addition, this invention is not limited to the said Example 1, In the range which does not deviate from the summary of this invention, it can also be implemented with a various form.
For example, in the first embodiment, as a fastener for fastening the fixing portion 52 of the covering member 51 to the outer peripheral surface of the fitting groove 25 of the outer ring member 20, a binding band 57 called a commercially available insulation tie is used. Although the case has been exemplified, a fastener having any structure may be used as long as the fastener fastens the fixing portion 52 of the covering member 51 to the outer peripheral surface of the fitting groove 25 of the outer ring member 20. For example, as shown in FIG. 5, the fixing portion 52 of the covering member 51 may be fastened to the outer peripheral surface of the fitting groove 25 of the outer ring member 20 by a C-shaped elastic wire 58.
Further, the present invention can be implemented without forming the fitting groove 25 on the outer peripheral surface of the one end portion of the outer ring member 20.
Further, the cover member 51 can be fixed to the outer peripheral surface of one end portion of the outer ring member 20 with an adhesive or the like. In this case, the present invention can be implemented without necessarily providing the C-shaped cylindrical fixing portion 52.

１１ 内輪部材
１３ フランジ
２０ 外輪部材
３０、３１ 転動体
４０ シール部材
５１ 覆い部材
５２ 固定部
５３ 覆い部
５６ インシュロックタイ（留め具）
５８ Ｃ字状の弾性ワイヤ（留め具） DESCRIPTION OF SYMBOLS 11 Inner ring member 13 Flange 20 Outer ring member 30, 31 Rolling element 40 Seal member 51 Cover member 52 Fixing part 53 Cover part 56 Insulok tie (fastener)
58 C-shaped elastic wire (fastener)

Claims (3)

径方向外方に延びるフランジを有する内輪部材と、この内輪部材の外周に配設される外輪部材と、前記内輪部材と前記外輪部材との間に転動可能に配設される転動体と、前記内輪部材のフランジが形成される近傍の外周面とこれに対向する前記外輪部材の一端部内周面の間の環状空間に密封状に配設されるシール部材と、前記外輪部材の一端部外周面と前記フランジとの間の隙間を覆って前記シール部材を保護する覆い部材とを備えた車輪用転がり軸受装置であって、
前記覆い部材は、前記外輪部材の一端部外周面の径方向外方から嵌込まれて固定される下部が開口されたＣ字状に形成されると共に、前記外輪部材と前記フランジとの間の隙間の少なくとも上半部を覆う構成にしてあることを特徴とする車輪用転がり軸受装置。 An inner ring member having a flange extending radially outward, an outer ring member disposed on an outer periphery of the inner ring member, a rolling element disposed to be rollable between the inner ring member and the outer ring member, A seal member disposed in a sealed manner in an annular space between an outer peripheral surface in the vicinity of the flange of the inner ring member and an inner peripheral surface of one end of the outer ring member facing the outer peripheral surface; and an outer periphery of one end of the outer ring member A rolling bearing device for a wheel provided with a covering member that covers a gap between a surface and the flange and protects the sealing member,
The covering member is formed in a C-shape with a lower portion that is fitted and fixed from the outer side in the radial direction of the outer peripheral surface of the one end portion of the outer ring member, and between the outer ring member and the flange. A rolling bearing device for a wheel, characterized in that at least the upper half of the gap is covered. 請求項１に記載の車輪用転がり軸受装置であって、
覆い部材は、外輪部材の一端部外周面の径方向外方から嵌込み可能に下部が開口されたＣ字筒状に形成され、かつ前記外輪部材の一端部外周面に留め具によって固定される固定部と、
前記固定部から前記フランジに接近する位置まで延出されて前記外輪部材の一端部外周面と前記フランジとの間の隙間の少なくとも上半部を覆うと共に、下部が開放された覆い部とを備えていることを特徴とする車輪用転がり軸受装置。 It is a rolling bearing device for wheels according to claim 1,
The cover member is formed in a C-shaped cylindrical shape having a lower portion opened so as to be fitted from the radially outer side of the outer peripheral surface of the one end portion of the outer ring member, and is fixed to the outer peripheral surface of the one end portion of the outer ring member by a fastener. A fixed part;
A cover portion extending from the fixed portion to a position approaching the flange and covering at least an upper half portion of a gap between the outer peripheral surface of the one end portion of the outer ring member and the flange, and having a lower portion opened. A rolling bearing device for a wheel characterized by comprising: 請求項２に記載の車輪用転がり軸受装置であって、
外輪部材の一端部外周面には、覆い部材の固定部が嵌込まれて同固定部の軸方向への移動を阻止する嵌込み溝が形成されていることを特徴とする車輪用転がり軸受装置。 It is a rolling bearing device for wheels according to claim 2,
A rolling bearing device for a wheel, characterized in that a fitting groove is formed on the outer peripheral surface of one end portion of the outer ring member to prevent the movement of the fixing portion in the axial direction by fitting the fixing portion of the covering member. .
JP2011089029A 2011-04-13 2011-04-13 Rolling bearing device for wheels Expired - Fee Related JP5790110B2 (en)

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WO2017051886A1 (en) * 2015-09-25 2017-03-30 Ntn株式会社 Bearing device for vehicle wheel
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Publication number Priority date Publication date Assignee Title
JP2017062019A (en) * 2015-09-25 2017-03-30 Ntn株式会社 Bearing for wheel
WO2017051886A1 (en) * 2015-09-25 2017-03-30 Ntn株式会社 Bearing device for vehicle wheel
US11021012B2 (en) 2015-09-25 2021-06-01 Ntn Corporation Bearing device for vehicle wheel
EP3398835A1 (en) * 2017-05-03 2018-11-07 ArvinMeritor Technology, LLC Wheel end assembly having a compression ring and method of assembly
US10293636B2 (en) 2017-05-03 2019-05-21 Arvinmeritor Technology, Llc Wheel end assembly having a deflector
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IT202000022312A1 (en) * 2020-09-23 2022-03-23 Skf Ab HIGH DRAINAGE WHEEL HUB UNIT
US20220088964A1 (en) * 2020-09-23 2022-03-24 Aktiebolaget Skf Wheel Hub Unit With Improved Drainage
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