JPH10281152A - Double row angular ball bearing - Google Patents

Double row angular ball bearing

Info

Publication number
JPH10281152A
JPH10281152A JP9084926A JP8492697A JPH10281152A JP H10281152 A JPH10281152 A JP H10281152A JP 9084926 A JP9084926 A JP 9084926A JP 8492697 A JP8492697 A JP 8492697A JP H10281152 A JPH10281152 A JP H10281152A
Authority
JP
Japan
Prior art keywords
shoulder
row angular
retainer
ball bearing
angular contact
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.)
Granted
Application number
JP9084926A
Other languages
Japanese (ja)
Other versions
JP3571490B2 (en
Inventor
Shinpei Shudo
眞平 首藤
Masabumi Sato
正文 佐藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koyo Seiko Co Ltd
Original Assignee
Koyo Seiko Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Koyo Seiko Co Ltd filed Critical Koyo Seiko Co Ltd
Priority to JP08492697A priority Critical patent/JP3571490B2/en
Publication of JPH10281152A publication Critical patent/JPH10281152A/en
Application granted granted Critical
Publication of JP3571490B2 publication Critical patent/JP3571490B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/41—Ball cages comb-shaped
    • F16C33/412—Massive or moulded comb cages, e.g. snap ball cages
    • F16C33/414—Massive or moulded comb cages, e.g. snap ball cages formed as one-piece cages, i.e. monoblock comb cages
    • F16C33/416—Massive or moulded comb cages, e.g. snap ball cages formed as one-piece cages, i.e. monoblock comb cages made from plastic, e.g. injection moulded comb cages
    • 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
    • F16C19/185—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 two raceways provided integrally on a part other than a race ring, e.g. a shaft or housing
    • 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
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/3806—Details of interaction of cage and race, e.g. retention, centring
    • 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

Landscapes

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

Abstract

PROBLEM TO BE SOLVED: To assemble a double row angular ball bearing, whose outer wheel has a shoulder part at one end part in an axial direction of an inner peripheral surface and at a central part, by an assembly system conventionally employed, through a common holder is used. SOLUTION: The body 80 of each holder 8 is provided with inlets 83 opened toward the outside in an axial direction and pockets 82 formed at internals of a specified distance in a peripheral direction. Claws for preventing pull-out of a ball are formed radially externally of the outer peripheral part of the holder body 80 located axially on the opposite side to the inlet 83 of the pocket 82. The outside diameter of the holder 8 at the tip of the claw 85 is decreased to a value lower than the inside diameter of the shoulder part of the outer wheel.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は複列アンギュラ玉軸
受に関し、特に、外輪の内周面の軸方向一端部分と中央
部分とに半径方向内側に向けて突出した肩部が形成され
ている複列アンギュラ玉軸受に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-row angular contact ball bearing, and more particularly to a double-row angular contact ball bearing in which a shoulder protruding radially inward is formed at one axial end portion and a central portion of an inner peripheral surface of an outer ring. Related to row angular contact ball bearings.

【０００２】[0002]

【従来の技術】従来、この種の複列アンギュラ玉軸受と
しては、図４に示すように、車輪を装着するためのハブ
を車軸に回転自在に支持するために使用されているもの
がある。この複列アンギュラ玉軸受は、外周面に半径方
向外方に延びる車輪取り付け用のフランジ１１を有して
ハブ本体として機能する概略円筒状の外輪１と、上記外
輪１と同軸に設けられた２つの内輪２．３と、複列の玉
Ｂと、これら複列の玉Ｂを保持する２つの保持器Ｒ１，
Ｒ２とから構成される。上記複列の玉Ｂは、それぞれ、
各内輪２．３の外周面に形成された円弧状の軌道２１，
３１と、これらの軌道２１，３１に半径方向に対して斜
め方向に対向するように上記外輪１の車体側円筒部１ａ
の内周面に肩部１２を挟んで形成された２つの軌道面１
３,１４との間に配されている。2. Description of the Related Art Conventionally, as this type of double row angular contact ball bearing, as shown in FIG. 4, there is a double row angular contact ball bearing used for rotatably supporting a hub for mounting wheels on an axle. The double-row angular contact ball bearing has a substantially cylindrical outer ring 1 functioning as a hub main body having a wheel mounting flange 11 extending radially outward on an outer peripheral surface, and 2 provided coaxially with the outer ring 1. Two inner rings 2.3, a double row of balls B, and two retainers R1,
R2. Each of the double-row balls B is
Arc-shaped tracks 21 formed on the outer peripheral surface of each inner ring 2.3,
31 and the vehicle body-side cylindrical portion 1a of the outer race 1 so as to face the tracks 21 and 31 obliquely to the radial direction.
Track surfaces 1 formed on the inner peripheral surface of shoulder with a shoulder 12 therebetween
3,14.

【０００３】[0003]

【発明が解決しようとする課題】上記複列アンギュラ玉
軸受に使用されている２つの保持器Ｒ１，Ｒ２は、現在
採用されている軸受組立工程の都合上、寸法および形状
が互いに異なっている。一般に、玉と保持器と内輪とを
外輪に組み込むには、玉を保持器のポケットに嵌め込
み、内輪の軌道の回りに玉が保持器に組み付けられたサ
ブアセンブリの状態で組み込むのが作業性がよいため、
保持器の外径は、保持器のポケットから玉が抜け出ない
ように大きくするのが都合がよい。そういう理由から、
従来は、図４に示すように、車体側（図中右側）の保持
器Ｒ２の外径寸法として、車輪側円筒部１ｂや肩部１２
の内径寸法よりも大きい外形寸法が使用されている。そ
して、玉Ｂと保持器Ｒ２と内輪３とは、サブアセンブリ
の状態で、矢印ａで示すように図中右から左へ向けて外
輪１内に組み込まれるのである。The two cages R1 and R2 used in the double row angular contact ball bearing are different in size and shape from each other because of the currently employed bearing assembly process. Generally, in order to incorporate the ball, the cage, and the inner ring into the outer ring, it is necessary to fit the ball into the pocket of the cage, and to assemble the ball around the orbit of the inner ring in a state of a subassembly in which the ball is assembled to the cage. For good
Conveniently, the outer diameter of the retainer is increased so that the ball does not fall out of the retainer pocket. For that reason,
Conventionally, as shown in FIG. 4, the outer diameter of the retainer R2 on the vehicle body side (right side in the figure) is defined as a wheel-side cylindrical portion 1b or a shoulder portion 12.
The outer dimensions larger than the inner diameter of are used. Then, the ball B, the retainer R2, and the inner ring 3 are assembled into the outer ring 1 in the sub-assembly from right to left in the figure as shown by an arrow a.

【０００４】ところが、車輪側（図中左側）の玉Ｂと保
持器Ｒ１と内輪２も同じようにサブアセンブリの状態
で、矢印ａの方向に押し込もうとすれば、外輪内周面の
中央部に肩部１２があるために、それ以上押し込むこと
ができない。また、矢印ｂで示すように図中左から右へ
向けて組み込もうとすれば、車輪側円筒部１ｂによって
構成される肩部１５があるために、サブアセンブリを外
輪１内に挿入できない。また、保持器Ｒ１が保持器Ｒ２
と同じ外径を有する限りは、上記肩部１２，１５がある
ために、保持器Ｒ１自体の挿入も不可能である。したが
って、車輪側（図中左側）の保持器Ｒ１については、そ
の外形寸法を車輪側円筒部１ｂによって構成される肩部
１５の内径寸法よりも小さく形成し、まず保持器だけを
矢印ｂの方向に組み込んだ後、保持器Ｒ１の各ポケット
に玉Ｂを押し込み、その後さらに内輪２を矢印ｂで示す
軸方向に押し込んで組み立てている。However, if the ball B on the wheel side (left side in the figure), the retainer R1, and the inner ring 2 are similarly pushed in the direction of arrow a in the sub-assembly state, the center of the inner peripheral surface of the outer ring is reduced. The part cannot be pushed further because of the shoulder 12. Further, when the assembly is to be performed from left to right in the drawing as shown by the arrow b, the sub-assembly cannot be inserted into the outer race 1 because of the presence of the shoulder 15 formed by the wheel-side cylindrical portion 1b. Further, the retainer R1 is different from the retainer R2.
As long as the retainer R1 has the same outer diameter as above, the retainer R1 itself cannot be inserted due to the presence of the shoulders 12 and 15. Therefore, the outer dimension of the cage R1 on the wheel side (left side in the figure) is formed smaller than the inner diameter of the shoulder portion 15 constituted by the wheel-side cylindrical portion 1b. After that, the ball B is pushed into each pocket of the retainer R1, and then the inner ring 2 is further pushed in the axial direction shown by the arrow b to assemble.

【０００５】このように、従来は、軸受組立工程の都合
上、１つの軸受につき大、小２種類の保持器Ｒ１，Ｒ２
を使用しているため、保持器製作用の金型も２種類用意
する必要があり、コストアップの要因となっている。As described above, conventionally, two types of large and small cages R1 and R2 are provided for each bearing for convenience of the bearing assembly process.
, It is necessary to prepare two types of dies for producing the cage, which is a factor of cost increase.

【０００６】そこで、本発明の目的は、外輪が内周面の
軸方向一端部分および中央部分に半径方向内側に向けて
突出した肩部を有するタイプの複列アンギュラ玉軸受で
あって、共通の保持器を使用しながらも、上述した従来
採用されている軸受組立方式で組み立てることのできる
複列アンギュラ玉軸受を提供することにある。An object of the present invention is to provide a double-row angular contact ball bearing of a type in which an outer ring has a shoulder portion protruding radially inward at one axial end portion and a central portion of an inner peripheral surface. It is an object of the present invention to provide a double-row angular contact ball bearing that can be assembled by the above-described conventional bearing assembly method while using a retainer.

【０００７】[0007]

【課題を解決するための手段】上記目的を達成するた
め、請求項１の複列アンギュラ玉軸受は、内周面の軸方
向一端部分と中央部分とに半径方向内側に向けて突出し
た第１および第２の肩部をそれぞれ有すると共に、上記
第２の肩部の軸方向両側に軌道が形成された外輪と、そ
れぞれの外周面に上記外輪の各軌道にそれぞれ対向する
軌道が形成された２つの内輪と、上記外輪の軌道と上記
２つの内輪の軌道との間に配設された複列の玉と、上記
各列の玉を周方向に一定間隔をおいて保持する同一形状
の２つの保持器とを備え、上記各保持器は、軸方向外側
に向けて開いた入口を有すると共に半径方向に貫通する
玉収納部が周方向に一定間隔をおいて形成された本体
と、各玉収納部の上記入口と軸方向反対側にある上記本
体の外周部分から半径方向外方に向けて形成された玉抜
け防止用の突起とを備えていることを特徴としている。In order to achieve the above object, a double-row angular contact ball bearing according to the present invention is characterized in that a first axially projecting portion and a central portion of an inner peripheral surface project radially inward. And an outer ring having tracks on both sides in the axial direction of the second shoulder, and a track formed on each outer peripheral surface to oppose each track of the outer ring. Two inner races, a plurality of rows of balls arranged between the outer raceway and the two inner raceways, and two identically shaped balls for holding the rows of balls at predetermined intervals in the circumferential direction. A retainer, wherein each of the retainers has an inlet opened toward the outside in the axial direction, and a ball storage portion penetrating in the radial direction is formed at regular intervals in the circumferential direction; Radius from the outer periphery of the body, axially opposite to the inlet of the part Is characterized by comprising a projection for ball slip prevention are formed toward the direction outward.

【０００８】請求項１の複列アンギュラ玉軸受では、各
玉収納部の入口と軸方向反対側にある保持器本体の外周
部分から半径方向外方に向けて玉抜け防止用の突起が形
成されているので、保持器本体自体の外径寸法が玉の抜
けを防止できるほど十分大きくなくても、上記突起の働
きによって外輪の外部においても玉は球収納部から抜け
出ることがない。上記外輪の２つの軌道の内、上記第１
の肩部と第２の肩部との間に位置することになる軌道へ
の玉の組み込みは、まず、保持器のみを、上記第１の肩
部のある外輪端部から、この第１の肩部を越えて、外輪
内の所定の位置に組み込み、続いて、この保持器の各球
収納部に玉を挿入することによって行われる。この後、
内輪が組み込まれる。一方、上記第１の肩部とは反対側
にある外輪の軌道への玉の組み込みは、内輪の軌道の囲
りに玉が保持器に組みつけられたサブアセンブリ状態
で、肩部のない外輪端部から組み込まれる。このよう
に、請求項１の複列アンギュラ玉軸受は従来採用されて
いる組立方式にしたがって組み立てられる。In the double-row angular contact ball bearing according to the first aspect, a projection for preventing ball dropout is formed radially outward from an outer peripheral portion of the retainer body, which is located on the opposite side of the entrance of each ball storage portion in the axial direction. Therefore, even if the outer diameter of the retainer main body itself is not large enough to prevent the ball from falling off, the ball does not fall out of the ball storage portion outside the outer ring by the function of the projection. Of the two tracks of the outer ring, the first
The incorporation of the ball into the track, which will be located between the shoulder of the first shoulder and the second shoulder, firstly only removes the retainer from the end of the outer ring with the first shoulder to the first This is accomplished by assembling in place in the outer race over the shoulder and subsequently inserting balls into each ball storage of the retainer. After this,
An inner ring is incorporated. On the other hand, the incorporation of the ball into the raceway of the outer ring opposite to the first shoulder is performed in a subassembly state in which the ball is assembled to the cage around the raceway of the inner race, and the outer race without the shoulder is provided. Assembled from the end. As described above, the double-row angular contact ball bearing according to the first aspect is assembled according to a conventionally adopted assembly method.

【０００９】また、請求項１の複列アンギュラ玉軸受に
おいては、従来とは異なり、使用する２つの保持器は同
一のものが使用されるので、従来は２種類必要であった
保持器作製のための金型は１種類のみで足り、しかも、
従来のように保持器本体の寸法が大きい保持器を使用し
ないので、使用する材料の量が少なくなり、その分材料
費が削減される。In the double row angular contact ball bearing according to the first aspect of the present invention, unlike the conventional case, the same two cages are used. Only one type of mold is needed, and
Since a cage having a large retainer body is not used as in the related art, the amount of material used is reduced, and the material cost is reduced accordingly.

【００１０】なお、この複列アンギュラ玉軸受は外輪が
回転するタイプのものであっても、内輪が回転するタイ
プのものであってもよい。The double row angular contact ball bearing may be of a type in which an outer ring rotates or a type in which an inner ring rotates.

【００１１】請求項２の複列アンギュラ玉軸受は、上記
保持器の突起が可撓性を有することを特徴としている。The double row angular contact ball bearing according to claim 2 is characterized in that the projection of the retainer has flexibility.

【００１２】保持器の突起が可撓性を有することによ
り、保持器を上記第１の肩部のある外輪端部から外輪内
の所定の位置まで挿入するときに、上記突起の先端にお
ける保持器の外径寸法が上記第１の肩部の内径よりも大
きくても、保持器は、突起が撓んでこの第１の肩部内を
通過し、外輪内の所定の位置まで押し込まれる。When the retainer is inserted from the end of the outer ring having the first shoulder to a predetermined position in the outer ring, the retainer at the tip of the projection has flexibility because the protrusion of the retainer has flexibility. Even if the outer diameter of the retainer is larger than the inner diameter of the first shoulder, the retainer is pushed through to the inside of the first shoulder by bending the protrusion to a predetermined position in the outer race.

【００１３】請求項３の複列アンギュラ玉軸受は、上記
突起の先端における上記保持器の外径が上記第２の肩部
の内径よりも小さいことを特徴としている。According to a third aspect of the present invention, the outer diameter of the retainer at the tip of the projection is smaller than the inner diameter of the second shoulder.

【００１４】各保持器の突起は外輪の内側において上記
第２の肩部と対向する位置にあるが、上記突起の先端に
おける保持器の外径がこの第２の肩部の内径よりも小さ
いことにより、上記保持器の突起は上記外輪の第２の肩
部に接触しない。したがって、突起先端における上記保
持器の外径が上記第２の肩部の内径よりも大きくて、突
起が第２の肩部に当たる場合に比べて、外輪が回転する
ときの抵抗が小さい。The projection of each cage is located at a position facing the second shoulder inside the outer ring, and the outer diameter of the cage at the tip of the projection is smaller than the inner diameter of the second shoulder. Accordingly, the protrusion of the retainer does not contact the second shoulder of the outer race. Therefore, the outer diameter of the retainer at the tip of the protrusion is larger than the inner diameter of the second shoulder, and the resistance when the outer ring rotates is smaller than when the protrusion contacts the second shoulder.

【００１５】[0015]

【発明の実施の形態】以下、本発明を図示の実施の形態
により詳細に説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the illustrated embodiments.

【００１６】図１は本発明の一実施の形態である外輪回
転タイプの車軸用複列アンギュラ玉軸受の軸方向要部断
面図であり、５は外周面に半径方向外方に延びる車輪取
り付け用のフランジ５１を有する概略円筒状の外輪、
６，７はそれぞれ上記外輪５の上記フランジ５１よりも
車体側に位置する円筒部（以下、車体側円筒部）５ａの
内側において外輪５と同軸に設けられた内輪である。FIG. 1 is a sectional view of a main part in the axial direction of an outer ring rotating type double row angular contact ball bearing for an axle according to an embodiment of the present invention. Reference numeral 5 denotes a wheel mounting extending radially outward on an outer peripheral surface. A generally cylindrical outer ring having a flange 51 of
Reference numerals 6 and 7 denote inner rings provided coaxially with the outer ring 5 inside a cylindrical portion (hereinafter referred to as a vehicle-side cylindrical portion) 5a of the outer ring 5 located closer to the vehicle body than the flange 51.

【００１７】上記外輪５の車体側円筒部５ａの内周面中
央部分には、半径方向内側に向けて突出した肩部（以
下、中央肩部）５２が形成されている。上記車体側円筒
部５ａには、フランジ側において、車輪（図示せず）が
嵌まり込む円筒部（以下、車輪側円筒部）５ｂが続いて
いる。上記車輪側円筒部５ｂの内周面は車体側円筒部５
ａの内周面よりも半径方向内側に位置しており、この結
果、車輪側円筒部の内周部分によって、もう１つの肩部
（以下、側方肩部）５３が構成される。A shoulder (hereinafter referred to as a center shoulder) 52 protruding radially inward is formed at a central portion of the inner peripheral surface of the vehicle body side cylindrical portion 5a of the outer ring 5. On the flange side, a cylindrical portion (hereinafter, wheel-side cylindrical portion) 5b into which a wheel (not shown) fits is connected to the vehicle-body-side cylindrical portion 5a on the flange side. The inner peripheral surface of the wheel-side cylindrical portion 5b is
a is located radially inward from the inner peripheral surface of the wheel a. As a result, the inner peripheral portion of the wheel-side cylindrical portion forms another shoulder portion (hereinafter, a lateral shoulder portion) 53.

【００１８】上記中央肩部５２の軸方向両側には２つの
円弧状の軌道５４，５５が形成されている。また、各内
輪６，７の外周面には、上記外輪５の各軌道５４，５５
に半径方向に対して斜め方向に対向する円弧状の軌道６
１，７１が形成されている。そして、この外輪５の軌道
５４，５５と２つの内輪６，７の軌道６１，７１との間
には、２つの保持器８，８によってそれぞれ保持された
複数の玉Ｂが複列に配設されている。各内輪６，７には
保持器８の半径方向内側に設けられた環状突起８１を案
内するための環状溝６２，７２が形成されており、この
環状溝６２，７２に上記環状突起８１は遊びをもって嵌
め込まれている。Two arc-shaped tracks 54 and 55 are formed on both sides of the central shoulder 52 in the axial direction. Also, on the outer peripheral surface of each inner ring 6, 7, each track 54, 55 of the outer ring 5 is provided.
Arc-shaped orbit 6 that faces diagonally to the radial direction
1, 71 are formed. A plurality of balls B respectively held by two retainers 8, 8 are arranged in a double row between the tracks 54, 55 of the outer ring 5 and the tracks 61, 71 of the two inner rings 6, 7. Have been. Annular grooves 62, 72 for guiding an annular projection 81 provided on the inner side in the radial direction of the retainer 8 are formed in each of the inner rings 6, 7, and the annular projections 81 play in the annular grooves 62, 72. It is fitted with.

【００１９】上記２つの保持器８，８は可撓性を有する
ように合成樹脂から形成されており、また同一の金型を
用いて同じ形状、同じ寸法に形成されたものである。そ
して、半径方向に延びる平面に対して互いに対称、つま
り左右対称、となるように内輪６，７と外輪５の間に設
置されている。上記保持器８の本体寸法は、図４に示し
た従来の複列アンギュラ玉軸受において使用されていた
小さい保持器Ｒ１の寸法にほぼ相当するものである。こ
のように、本実施の形態では、左右両方の保持器８，８
を従来の小さい保持器Ｒ１に相当する寸法にしているの
で、大、小の保持器Ｒ１，Ｒ２を用いていた従来に比べ
て使用する材料の量が減り、したがって、材料費が削減
できる。さらに、従来は１つの軸受に対して２種類の保
持器Ｒ１，Ｒ２を使用していたため、保持器作製用の金
型も２種類準備する必要があったが、本実施の形態では
１種類の金型だけを準備すればよく、金型コストを削減
できる。こういったことから、本実施の形態の軸受は従
来よりも安価に製造できる。The two retainers 8, 8 are formed of a synthetic resin so as to have flexibility, and are formed in the same shape and the same size using the same mold. And it is installed between the inner ring | wheel 6,7 and the outer ring | wheel 5 so that it may mutually be symmetric with respect to the plane extended in a radial direction, ie, left-right symmetry. The dimensions of the main body of the retainer 8 substantially correspond to the dimensions of the small retainer R1 used in the conventional double-row angular contact ball bearing shown in FIG. As described above, in the present embodiment, both the left and right retainers 8, 8 are provided.
Is reduced to a size corresponding to the conventional small cage R1, so that the amount of material used is reduced as compared with the conventional case using the large and small cages R1 and R2, and therefore the material cost can be reduced. Further, since two types of cages R1 and R2 are conventionally used for one bearing, it is necessary to prepare two types of dies for manufacturing the cage, but in this embodiment, one type of cage is used. Only the mold needs to be prepared, and the mold cost can be reduced. For these reasons, the bearing of the present embodiment can be manufactured at lower cost than before.

【００２０】図２に示すように、各保持器８の本体８０
には、玉収納部としての複数のポケット８２が周方向に
一定間隔をおいて形成されている。各ポケット８２は、
上記玉Ｂの球面と略相補の形状を有する凹面によって形
成されている。また、各ポケット８２は、軸方向外側に
向けて開いた入口８３を有すると共に保持器本体８０を
半径方向に貫通している。各ポケット８２の入口の周方
向両側にある玉把持部８４，８４は、可撓性があること
により、玉が入れられるときには周方向に開いて、玉の
挿入を可能にする。As shown in FIG. 2, the main body 80 of each cage 8
, A plurality of pockets 82 as ball storage portions are formed at regular intervals in the circumferential direction. Each pocket 82
The ball B is formed by a concave surface having a shape substantially complementary to the spherical surface. Each pocket 82 has an entrance 83 opened outward in the axial direction and penetrates the retainer body 80 in the radial direction. The ball gripping portions 84, 84 on both sides of the entrance of each pocket 82 in the circumferential direction are flexible, so that when the balls are inserted, they open in the circumferential direction to allow the balls to be inserted.

【００２１】また、保持器本体８０の外周部には、図
１，２に示すように、各ポケット８２の上記入口８３と
軸方向反対側つまりポケットの背側の中央部分におい
て、玉抜け防止用の湾曲した突起つまり爪８５が半径方
向外方に向けて一体に形成されている。上記爪８５の先
端はポケット８２内の玉Ｂの中心よりも半径方向外側に
位置する。また、上記爪８５の先端における保持器８の
外径は、外輪５の側方肩部５３の内径よりは大きいが、
中央肩部５２の内径よりも小さい。したがって、外輪５
の回転中に、爪８５が上記中央肩部５２に接触すること
がなく、外輪２が回転するときの抵抗が小さくなる。As shown in FIGS. 1 and 2, the outer periphery of the retainer body 80 is provided at the center of the pocket 82 opposite to the entrance 83 in the axial direction, that is, at the center of the back of the pocket. Are formed integrally with each other in a radially outward direction. The tip of the claw 85 is located radially outside the center of the ball B in the pocket 82. The outer diameter of the retainer 8 at the tip of the claw 85 is larger than the inner diameter of the side shoulder 53 of the outer ring 5,
It is smaller than the inner diameter of the central shoulder 52. Therefore, the outer ring 5
The claw 85 does not come into contact with the central shoulder 52 during the rotation of the outer ring 2, and the resistance when the outer ring 2 rotates is reduced.

【００２２】上記外輪の左右の軌道５４，５５の内、左
側つまり車輪側にある軌道５４への玉の組み込みは次の
ようにして行われる。まず、保持器８のみを、外輪５の
車輪側端部から上記軌道５４付近の位置まで、上記側方
肩部５３を越えて、矢印ｂの方向に押し込む。このと
き、保持器８の爪８５が撓むので、爪８５先端における
保持器８の外径が外輪５の側方肩部５３の内径よりも大
きいにも拘わらず、側方肩部５３内に挿入できる。続い
て、同じ車輪側端部からこの保持器８の各ポケット８５
内に玉Ｂを挿入し、最後に内輪６を上記車輪側端部から
外輪５内に押し込む。一方、図中右側の軌道５５への玉
Ｂの組み込みは、内輪７の軌道７１の囲りに玉Ｂが保持
器８に組みつけられたサブアセンブリ状態で行う。この
とき、各玉Ｂは、保持器本体８０の外周部に設けられた
爪８５の働きによって、ポケット８２から抜け出ること
はない。最後に内輪７と外輪５との間にシール部材９を
取り付ける。こうして、図１に示した複列アンギュラ玉
軸受の組み立てが完成する。The incorporation of the ball into the track 54 on the left side, that is, on the wheel side, of the left and right tracks 54 and 55 of the outer ring is performed as follows. First, only the retainer 8 is pushed in the direction of arrow b from the end on the wheel side of the outer ring 5 to a position near the track 54, over the side shoulder 53. At this time, the claw 85 of the retainer 8 bends, so that the outer diameter of the retainer 8 at the tip of the claw 85 is larger than the inner diameter of the side shoulder 53 of the outer ring 5, but the inside of the side shoulder 53 Can be inserted. Subsequently, each pocket 85 of the retainer 8 is moved from the same wheel side end.
The ball B is inserted into the inside, and finally the inner ring 6 is pushed into the outer ring 5 from the wheel side end. On the other hand, the incorporation of the ball B into the track 55 on the right side in the drawing is performed in a sub-assembly state in which the ball B is mounted on the retainer 8 around the track 71 of the inner ring 7. At this time, each ball B does not fall out of the pocket 82 due to the function of the claw 85 provided on the outer peripheral portion of the retainer main body 80. Finally, a seal member 9 is attached between the inner ring 7 and the outer ring 5. Thus, the assembly of the double-row angular contact ball bearing shown in FIG. 1 is completed.

【００２３】なお、外輪回転タイプの上記車軸用複列ア
ンギュラ玉軸受において使用した上記保持器８は、図３
に示す内輪回転タイプの複列アンギュラ玉軸受において
も使用できる。つまり、１種類の保持器を、異なるタイ
プの複列アンギュラ玉軸受に共通して使用できるのであ
る。なお、図３において５’は外輪であり、その他の部
材については図１，２で使用したのと同じ番号で表して
いる。図３に示した内輪回転タイプの複列アンギュラ玉
軸受の場合には、いずれの列の玉も、保持器８に組つけ
られたサブアセンブリ状態で、外輪５’に組み込まれ
る。The cage 8 used in the double-row angular contact ball bearing for an axle of the outer ring rotation type is shown in FIG.
It can also be used in the inner row rotating type double row angular contact ball bearing shown in (1). That is, one type of cage can be commonly used for different types of double row angular contact ball bearings. In FIG. 3, reference numeral 5 'denotes an outer ring, and other members are represented by the same numbers as those used in FIGS. In the case of the inner row rotating type double row angular contact ball bearing shown in FIG. 3, the balls in any row are assembled into the outer ring 5 'in a subassembly state mounted on the retainer 8.

【００２４】[0024]

【発明の効果】以上より明らかなように、請求項１の複
列アンギュラ玉軸受においては、保持器に玉抜け防止用
の突起を設けているので、保持器本体の外径寸法を、外
輪の肩部を越えて組み込むことが可能な小さなものにす
ることができるにも拘わらず、外輪の外部においても、
玉が保持器のポケットから抜け出ることがない。したが
って、請求項１の複列アンギュラ玉軸受は、同一の保持
器を用いた上で、従来採用されている組立方式を用いて
組み立てることができる。そして、このように同一の保
持器を使用するので、従来は２種類必要であった保持器
作製のための金型を１種類に減らすことができ、しか
も、従来のように保持器本体の寸法が大きい保持器を使
用しないので、使用する材料の量が少なくなり、その分
材料費を削減できる。As is apparent from the above description, in the double row angular contact ball bearing according to the first aspect, since the retainer is provided with the projection for preventing the ball from coming off, the outer diameter of the retainer main body is reduced. Despite being small enough to fit over the shoulder, even outside the outer ring,
The ball does not fall out of the cage pocket. Therefore, the double-row angular contact ball bearing of claim 1 can be assembled using the same retainer and by using an assembly method conventionally adopted. Since the same cage is used in this manner, the number of molds for fabricating the cage, which conventionally required two types, can be reduced to one type. Since a cage having a large size is not used, the amount of material used is reduced, and the material cost can be reduced accordingly.

【００２５】請求項２の複列アンギュラ玉軸受において
は、上記保持器の突起が可撓性を有するので、上記突起
の先端における保持器の外径寸法が上記第１の肩部の内
径寸法よりも大きくても、上記保持器の突起を撓ませる
ことによって上記第１の肩部のある外輪端部から外輪内
の所定の位置に押し込むことができる。In the double row angular contact ball bearing of the present invention, since the projection of the cage has flexibility, the outer diameter of the cage at the tip of the projection is larger than the inner diameter of the first shoulder. Even if it is large, it can be pushed into a predetermined position in the outer race from the end of the outer race with the first shoulder by bending the projection of the retainer.

【００２６】請求項３の複列アンギュラ玉軸受は、上記
突起の先端における上記保持器の外径が上記外輪の第２
の肩部の内径よりも小さいので、保持器の突起が上記第
２の肩部に接触しないため、外輪が回転するときの抵抗
を小さくできる。According to a third aspect of the present invention, in the double row angular contact ball bearing, the outer diameter of the cage at the tip of the projection is the second diameter of the outer ring.
Since the inner diameter of the outer ring is smaller than the inner diameter of the shoulder, the protrusion of the retainer does not contact the second shoulder, so that the resistance when the outer ring rotates can be reduced.

【図面の簡単な説明】[Brief description of the drawings]

【図１】 本発明の一実施の形態である外輪回転タイプ
の複列アンギュラ玉軸受の断面図。FIG. 1 is a cross-sectional view of an outer ring rotation type double row angular contact ball bearing according to an embodiment of the present invention.

【図２】 図１の複列アンギュラ玉軸受に使用される保
持器の部分斜視図。FIG. 2 is a partial perspective view of a retainer used for the double-row angular contact ball bearing of FIG. 1;

【図３】 図２に示した保持器を用いた内輪回転タイプ
の複列アンギュラ玉軸受の断面図。3 is a sectional view of an inner ring rotating type double-row angular contact ball bearing using the retainer shown in FIG. 2;

【図４】 従来の複列アンギュラ玉軸受の断面図。FIG. 4 is a sectional view of a conventional double-row angular contact ball bearing.

【符号の説明】[Explanation of symbols]

５，５’…外輪、６…内輪、７…内輪、８…保持器、９
…シール材、５２，５３…肩部、５４，５５…軌道、６
１，７１…軌道、８２…ポケット、８３…ポケットの入
口、８５…爪、Ｂ…玉。5, 5 ': outer ring, 6: inner ring, 7: inner ring, 8: retainer, 9
... seal material, 52, 53 ... shoulder, 54, 55 ... track, 6
1, 71: track, 82: pocket, 83: entrance of pocket, 85: claw, B: ball.

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 内周面の軸方向一端部分と中央部分とに
半径方向内側に向けて突出した第１および第２の肩部を
それぞれ有すると共に、上記第２の肩部の軸方向両側に
軌道が形成された外輪と、 それぞれの外周面に上記外輪の各軌道にそれぞれ対向す
る軌道が形成された２つの内輪と、 上記外輪の軌道と上記２つの内輪の軌道との間に配設さ
れた複列の玉と、 上記各列の玉を周方向に一定間隔をおいて保持する同一
形状の２つの保持器とを備え、上記各保持器は、軸方向
外側に向けて開いた入口を有すると共に半径方向に貫通
する玉収納部が周方向に一定間隔をおいて形成された本
体と、各玉収納部の上記入口と軸方向反対側にある上記
本体の外周部分から半径方向外方に向けて形成された玉
抜け防止用の突起とを備えていることを特徴とする複列
アンギュラ玉軸受。An inner peripheral surface includes first and second shoulders protruding radially inward at one axial end portion and a central portion, respectively, and at both axial sides of the second shoulder portion. An outer ring having a raceway formed thereon, two inner races having respective outer raceways formed with raceways respectively opposing the raceways of the outer race, and a raceway disposed between the raceway of the outer race and the raceway of the two inner races. A plurality of rows of balls, and two cages of the same shape that hold the balls of each row at a constant interval in the circumferential direction, and each of the cages has an inlet opened outward in the axial direction. And a main body in which ball storage portions penetrating in the radial direction are formed at regular intervals in the circumferential direction, and radially outward from an outer peripheral portion of the main body on the side opposite to the inlet and the axial direction of each ball storage portion. And a projection formed to face the ball to prevent ball dropout. Double row angular contact ball bearing. 【請求項２】 上記保持器の突起が可撓性を有すること
を特徴とする請求項１に記載の複列アンギュラ玉軸受。2. The double-row angular contact ball bearing according to claim 1, wherein the projection of the cage has flexibility. 【請求項３】 上記突起の先端における上記保持器の外
径が上記第２の肩部の内径よりも小さいことを特徴とす
る請求項１または２に記載の複列アンギュラ玉軸受。3. The double-row angular contact ball bearing according to claim 1, wherein an outer diameter of the retainer at a tip of the protrusion is smaller than an inner diameter of the second shoulder.
JP08492697A 1997-04-03 1997-04-03 Double row angular contact ball bearing Expired - Fee Related JP3571490B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP08492697A JP3571490B2 (en) 1997-04-03 1997-04-03 Double row angular contact ball bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP08492697A JP3571490B2 (en) 1997-04-03 1997-04-03 Double row angular contact ball bearing

Publications (2)

Publication Number Publication Date
JPH10281152A true JPH10281152A (en) 1998-10-20
JP3571490B2 JP3571490B2 (en) 2004-09-29

Family

ID=13844311

Family Applications (1)

Application Number Title Priority Date Filing Date
JP08492697A Expired - Fee Related JP3571490B2 (en) 1997-04-03 1997-04-03 Double row angular contact ball bearing

Country Status (1)

Country Link
JP (1) JP3571490B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008115985A (en) * 2006-11-07 2008-05-22 Ntn Corp Bearing device for vehicle
EP2034202A3 (en) * 2007-08-28 2012-10-03 JTEKT Corporation Resin cage for ball bearing
CN111936757A (en) * 2018-03-28 2020-11-13 Ntn株式会社 Bearing device for wheel
CN114046346A (en) * 2021-11-30 2022-02-15 中国航发湖南动力机械研究所 Built-in rolling bearing fixing structure

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008115985A (en) * 2006-11-07 2008-05-22 Ntn Corp Bearing device for vehicle
EP2034202A3 (en) * 2007-08-28 2012-10-03 JTEKT Corporation Resin cage for ball bearing
CN111936757A (en) * 2018-03-28 2020-11-13 Ntn株式会社 Bearing device for wheel
CN111936757B (en) * 2018-03-28 2023-01-17 Ntn株式会社 Bearing device for wheel
CN114046346A (en) * 2021-11-30 2022-02-15 中国航发湖南动力机械研究所 Built-in rolling bearing fixing structure
CN114046346B (en) * 2021-11-30 2023-12-15 中国航发湖南动力机械研究所 Built-in rolling bearing fixing structure

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