JPH09177769A - Thrust bearing - Google Patents
Thrust bearingInfo
- Publication number
- JPH09177769A JPH09177769A JP35186695A JP35186695A JPH09177769A JP H09177769 A JPH09177769 A JP H09177769A JP 35186695 A JP35186695 A JP 35186695A JP 35186695 A JP35186695 A JP 35186695A JP H09177769 A JPH09177769 A JP H09177769A
- Authority
- JP
- Japan
- Prior art keywords
- bearing ring
- bearing
- retainer
- ring
- thrust
- 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.)
- Withdrawn
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
- 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
- F16C19/10—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for axial load mainly
-
- 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
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/30—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly
-
- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/46—Cages for rollers or needles
- F16C33/4605—Details of interaction of cage and race, e.g. retention or 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/761—Sealings of ball or roller bearings specifically for bearings with purely axial load
-
- 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
- F16C33/7893—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a cage or integral therewith
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】 本発明は、スラスト軸受、特に
リテーナによる分離防止構造を有するスラスト軸受に関
する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thrust bearing, and more particularly to a thrust bearing having a separation preventing structure using a retainer.
【０００２】[0002]
【従来技術】 一般的なスラスト軸受は、図７に示すよ
うに、座金状の第１の軌道輪１と第２の軌道輪の向かい
合う面に、ボール３の半径よりも若干大きい曲率半径を
もった円弧状の溝を形成し、ボール３がその円弧状の溝
内に位置するように、ボール３の組み込まれたリテーナ
４をこれら軌道輪１と２との間に挟んだ構造のものであ
る。このようなスラスト軸受は第１の軌道輪１と第２の
軌道輪２が簡単に分離し、ボール３及びリテーナ４が脱
落してしまうので、従来ではこれを防ぐためにシールド
部材５を利用している。2. Description of the Related Art As shown in FIG. 7, a general thrust bearing has a radius of curvature slightly larger than the radius of the ball 3 on the surfaces of the washer-shaped first bearing ring 1 and the second bearing ring facing each other. A groove having a circular arc shape is formed, and a retainer 4 incorporating the ball 3 is sandwiched between the bearing rings 1 and 2 so that the ball 3 is located in the circular groove. . In such a thrust bearing, the first bearing ring 1 and the second bearing ring 2 are easily separated, and the ball 3 and the retainer 4 fall off. Therefore, conventionally, the shield member 5 is used to prevent this. There is.
【０００３】 図７のスラスト軸受では、第１の軌道輪
１と第２の軌道輪２のそれぞれの外周縁に連続する段差
１Ａ，２Ａを形成して、外周縁の厚みを薄くし、主にプ
レスで形成したシールド部材５を第１の軌道輪１と第２
の軌道輪２の外周部に組み合わせ、最終的にシールド部
材５の両端の折り曲げ部を第１の軌道輪１と第２の軌道
輪２のそれぞれの段差１Ａ，２Ａへ折り曲げて分離防止
を図っている。このように段差１Ａ，２Ａ側へ折り曲げ
られた分離防止部５Ａは、図示していないが、通常、１
２０度毎に３か所、あるいは９０度毎に４か所形成され
る。そして段差２Ａ側へ折り曲げられた分離防止部５Ａ
は、固定側の第２の軌道輪２の段差２Ａに固定される。
第１の軌道輪１の段差１Ａとこの段差側に折り曲げられ
た分離防止部５Ａとの間には若干の空隙があり、分離防
止部５Ａが第１の軌道輪１の回転運動を損なわないよう
になっている。なお、１Ｂ，２Ｂは第１の軌道輪１と第
２の軌道輪２それぞれの中央穴である。In the thrust bearing of FIG. 7, continuous steps 1A and 2A are formed on the outer peripheral edges of the first bearing ring 1 and the second bearing ring 2, respectively, to reduce the thickness of the outer peripheral edge, and mainly The shield member 5 formed by pressing is attached to the first bearing ring 1 and the second bearing ring.
In combination with the outer peripheral portion of the bearing ring 2, the bending portions at both ends of the shield member 5 are finally bent to the respective steps 1A and 2A of the first bearing ring 1 and the second bearing ring 2 to prevent separation. There is. Although not shown, the separation preventing portion 5A bent toward the steps 1A and 2A is normally
It is formed in three places every 20 degrees or four places every 90 degrees. And the separation prevention portion 5A bent to the step 2A side
Is fixed to the step 2A of the second bearing ring 2 on the fixed side.
There is a slight gap between the step 1A of the first bearing ring 1 and the separation preventing portion 5A bent to the step side so that the separation preventing portion 5A does not impair the rotational movement of the first bearing ring 1. It has become. Note that 1B and 2B are central holes of the first bearing ring 1 and the second bearing ring 2, respectively.
【０００４】 次に図８に示すスラスト軸受では、第１
の軌道輪１と第２の軌道輪２のそれぞれの中央穴１Ｂ，
２Ｂに沿った内周縁に連続する段差１Ａ，２Ａを形成し
て、内周縁の厚みを薄くし、シールド部材５を第１の軌
道輪１と第２の軌道輪２の中央穴１Ｂ，２Ｂ内にセット
し、内周部に組み合わせる。そして、最終的にシールド
部材５の両端の折り曲げ部を第１の軌道輪１と第２の軌
道輪２のそれぞれの段差１Ａ，２Ａへ折り曲げて分離防
止部５Ａを形成し、分離防止を図っている。この例は、
シールド部材５を第１の軌道輪１と第２の軌道輪２の内
周部に組み合わせるという点で図７のものと違うが、シ
ールド部材５を用いるという点では同じである。Next, in the thrust bearing shown in FIG.
The central hole 1B of each of the bearing ring 1 and the second bearing ring 2 of
A continuous step 1A, 2A is formed on the inner peripheral edge along 2B to reduce the thickness of the inner peripheral edge, and the shield member 5 is placed in the central holes 1B, 2B of the first bearing ring 1 and the second bearing ring 2. And set it on the inner circumference. Then, finally, the bent portions at both ends of the shield member 5 are bent to the steps 1A and 2A of the first bearing ring 1 and the second bearing ring 2, respectively, to form the separation preventing portion 5A to prevent the separation. There is. This example
7 is different in that the shield member 5 is combined with the inner peripheral portions of the first bearing ring 1 and the second bearing ring 2, but it is the same in that the shield member 5 is used.
【０００５】 さらに図９に示すスラスト軸受は、プレ
ス加工により薄皿状に形成された第１の軌道輪１と第２
の軌道輪２を組み合わせている。これら第１の軌道輪１
と第２の軌道輪２の円環端部１Ｃ，２Ｃは外方向へ幾分
広がっており、、第２の軌道輪２の円環端部２Ｃには第
１の軌道輪１の外径よりも少し大きく、円環端部１Ｃよ
りも幾分径の小さい内径部をもつ円環板状のシールド部
材５を固定して分離防止を図っている。この例も、プレ
ス加工によって形成された形状の異なる第１の軌道輪１
と第２の軌道輪２を用いるという点で図７又は図８のも
のと違うが、シールド部材５を用いるという点では同じ
である。Further, the thrust bearing shown in FIG. 9 has a first bearing ring 1 and a second bearing ring 1 formed in a thin plate shape by press working.
The bearing ring 2 is combined. These first bearing rings 1
And the annular end portions 1C and 2C of the second bearing ring 2 are somewhat spread outward, and the annular end portion 2C of the second bearing ring 2 is larger than the outer diameter of the first bearing ring 1. Is also slightly larger, and an annular plate-shaped shield member 5 having an inner diameter portion slightly smaller than the annular end portion 1C is fixed to prevent separation. In this example also, the first bearing ring 1 formed by press working and having a different shape is used.
7 and FIG. 8 in that the second bearing ring 2 is used, but it is the same in that the shield member 5 is used.
【０００６】[0006]
【発明が解決しようとする課題】 以上の記載から明ら
かなように、従来のスラスト軸受では、分離の防止のた
めに必ずそれ専用のシールド部材を用いており、またそ
のシールド部材をいずれか一方の軌道輪に固定する必要
があった。したがって、コストの低減に限界があり、比
較的高価にならざるを得ないという欠点が存在た。As is clear from the above description, in the conventional thrust bearing, a dedicated shield member is always used to prevent separation, and one of the shield members is used. It had to be fixed to the bearing ring. Therefore, there is a limitation in reducing the cost, and there is a drawback that it is relatively expensive.
【０００７】 本発明は、このような欠点を除去し、部
品点数を減らし、組み立て易いスラスト軸受を与えるこ
とを主目的としている。The main object of the present invention is to eliminate such drawbacks, reduce the number of parts, and provide a thrust bearing that is easy to assemble.
【０００８】[0008]
【問題を解決するための手段】 前述のような問題を解
決するため、請求項１の発明では、第１の軌道輪、第２
の軌道輪、これら軌道輪の間を転動する複数の転動体、
及びこれら転動体を保持するリテーナからなり、スラス
ト方向荷重を受けるのに適した軸受において、前記リテ
ーナは前記第１の軌道輪と第２の軌道輪それぞれの外周
縁まで延びる分離防止機能部を備え、前記第１の軌道輪
と第２の軌道輪との分離を防ぐことを特徴とするスラス
ト軸受を提供する。[Means for Solving the Problems] In order to solve the above-mentioned problems, in the invention of claim 1, the first bearing ring and the second bearing ring are provided.
Bearing rings, multiple rolling elements rolling between these bearing rings,
And a retainer for holding these rolling elements, which is suitable for receiving a load in the thrust direction, the retainer has a separation preventing function portion extending to outer peripheral edges of the first and second races. A thrust bearing is provided which prevents separation of the first bearing ring and the second bearing ring.
【０００９】前述のような問題を解決するため、請求項
２の発明では、中央穴を有する第１の軌道輪、中央穴を
有する第２の軌道輪、これら軌道輪の間を転動する複数
の転動体、及びこれら転動体を保持するリテーナからな
り、スラスト方向荷重を受けるのに適した軸受におい
て、前記リテーナは前記第１の軌道輪と第２の軌道輪そ
れぞれの前記中央穴に沿った内周縁まで延びる分離防止
機能部を備え、前記第１の軌道輪と第２の軌道輪との分
離を防ぐことを特徴とするスラスト軸受を提供する。In order to solve the above-mentioned problem, in the invention of claim 2, a first bearing ring having a central hole, a second bearing ring having a central hole, and a plurality of rolling members rolling between these bearing rings. Of the rolling elements and retainers for holding these rolling elements, which are suitable for receiving the load in the thrust direction, the retainer is provided along the central hole of each of the first race and the second race. There is provided a thrust bearing including a separation preventing function portion extending to an inner peripheral edge and preventing separation of the first bearing ring and the second bearing ring.
【００１０】前述のような問題を解決するため、請求項
３の発明では、第１の軌道輪、中央穴を有する第２の軌
道輪、これら軌道輪の間を転動する複数の転動体、及び
これら転動体を保持するリテーナからなり、スラスト方
向荷重を受けるのに適した軸受において、前記リテーナ
は前記第１の軌道輪の外周縁まで延びる分離防止機能部
を備えると共に、前記第２の軌道輪の前記中央穴に沿っ
た内周縁まで延びる分離防止機能部を備え、前記第１の
軌道輪と第２の軌道輪との分離を防ぐことを特徴とする
スラスト軸受を提供する。In order to solve the above-mentioned problem, in the invention of claim 3, a first bearing ring, a second bearing ring having a central hole, a plurality of rolling elements rolling between these bearing rings, And a retainer for holding these rolling elements, which is suitable for receiving a load in the thrust direction, the retainer includes a separation preventing function portion extending to an outer peripheral edge of the first race, and the second race. A thrust bearing is provided, which is provided with a separation preventing function portion extending to an inner peripheral edge of the ring along the central hole, and prevents separation of the first bearing ring and the second bearing ring.
【００１１】前述のような問題を解決するため、請求項
４の発明では、前記リテーナは、前記第１の軌道輪と第
２の軌道輪と対向するそれぞれの面に突起を有すること
を特徴とする請求項１ないし請求項３のいずれかに記載
のスラスト軸受を提供する。In order to solve the above-mentioned problems, the invention of claim 4 is characterized in that the retainer has protrusions on respective surfaces facing the first bearing ring and the second bearing ring. A thrust bearing according to any one of claims 1 to 3 is provided.
【００１２】前述のような問題を解決するため、請求項
５の発明では、前記第１の軌道輪はその中央部に、この
第１の軌道輪と一体的に形成された中央円筒状部を備え
たことを特徴とする請求項１に記載のスラスト軸受を提
供する。In order to solve the above-mentioned problems, in the invention of claim 5, the first bearing ring has a central cylindrical portion integrally formed with the first bearing ring at the center thereof. The thrust bearing according to claim 1, wherein the thrust bearing is provided.
【００１３】[0013]
【発明を実施するための形態及び実施例】 図１により
本発明にかかる第１の実施例を説明する。図１におい
て、図７ないし図９で参照した記号と同一の記号は相当
する部材を示すものとする。BEST MODE FOR CARRYING OUT THE INVENTION A first embodiment according to the present invention will be described with reference to FIG. In FIG. 1, the same symbols as those referred to in FIGS. 7 to 9 indicate the corresponding members.
【００１４】 この発明ではリテーナ４の構造に特徴が
あり、リテーナ４が本来のボール３の保持機能を行う他
に、分離防止機能をも行っている。The present invention is characterized by the structure of the retainer 4, and the retainer 4 performs not only the original function of holding the ball 3 but also the function of preventing separation.
【００１５】 この実施例では、リテーナ４は合成樹脂
の注型により形成され、その中央穴４Ａと複数のボール
３のそれぞれを保持するボール保持孔４Ｂとの間の両面
に突起４Ｃを有する。この突起の機能については後述す
る。In this embodiment, the retainer 4 is formed by casting a synthetic resin and has projections 4C on both sides between the central hole 4A and the ball holding hole 4B for holding each of the plurality of balls 3. The function of this protrusion will be described later.
【００１６】 このリテーナ４が従来と特に異なる点
は、リテーナ４の円板状部分４’の外周端から円板状部
分４’の両面に対してほぼ直角に延びる短筒状部４Ｄ、
及び短筒状部４Ｄの双方の先端部分から１２０度毎に、
短筒状部４Ｄに対してほぼ直角な突起状の分離防止部４
Ｅを備えている構造にある。この実施例では、短筒状部
４Ｄと分離防止部４Ｅとで分離防止機能部を形成してい
る。The retainer 4 is different from the conventional one in that the retainer 4 has a short tubular portion 4D extending substantially at right angles from the outer peripheral edge of the disc-shaped portion 4'to both surfaces of the disc-shaped portion 4 '.
And every 120 degrees from both tip parts of the short tubular portion 4D,
Separation prevention portion 4 in the form of a protrusion that is substantially perpendicular to the short tubular portion 4D
The structure is equipped with E. In this embodiment, the short tubular portion 4D and the separation preventing portion 4E form a separation preventing functional portion.
【００１７】 短筒状部４Ｄの内径は第１の軌道輪１、
第２の軌道輪２の外径よりも若干大きくなっており、分
離防止部４Ｅは第１の軌道輪１、第２の軌道輪２の段差
１Ａ，２Ａにおける薄肉部まで延びる。そして短筒状部
４Ｄの両端の分離防止部４Ｅの内側端間は、第１の軌道
輪１、第２の軌道輪２の段差１Ａ，２Ａにおける薄肉部
の外面間の距離よりも若干大きくなっている。ここで、
突起４Ｃはリテーナ４の円板状部分４’が第１の軌道輪
１、又は第２の軌道輪２の内面に密着するのを防止し
て、回転運動に悪影響を与えないようにするものであ
る。The inner diameter of the short tubular portion 4D is the first bearing ring 1,
It is slightly larger than the outer diameter of the second bearing ring 2, and the separation prevention portion 4E extends to the thin-walled portions of the steps 1A and 2A of the first bearing ring 1 and the second bearing ring 2. The distance between the inner ends of the separation preventing portions 4E at both ends of the short tubular portion 4D is slightly larger than the distance between the outer surfaces of the thin portions of the steps 1A and 2A of the first bearing ring 1 and the second bearing ring 2. ing. here,
The protrusion 4C prevents the disc-shaped portion 4'of the retainer 4 from coming into close contact with the inner surface of the first bearing ring 1 or the second bearing ring 2 and prevents the rotational movement from being adversely affected. is there.
【００１８】 このスラスト軸受の組み立ては非常に容
易である。先ず、リテーナ４の下側の分離防止部４Ｅ
に、その弾性を利用して第２の軌道輪２を圧入し、次に
ボール３をリテーナ４の各ボール保持孔４Ｂに挿着す
る。しかる後に、第１の軌道輪１をリテーナ４の上側の
分離防止部４Ｅに第１の軌道輪１を圧入することによ
り、分離しないスラスト軸受が得られる。Assembly of this thrust bearing is very easy. First, the separation prevention portion 4E on the lower side of the retainer 4
Secondly, the elasticity is utilized to press-fit the second bearing ring 2, and then the balls 3 are inserted into the respective ball holding holes 4B of the retainer 4. After that, the first bearing ring 1 is press-fitted into the separation preventing portion 4E on the upper side of the retainer 4 to obtain a thrust bearing that does not separate.
【００１９】 次に図２に示す別の実施例では、短筒状
部４Ｄをリテーナ４の円板状部分４’の中央穴４Ａに沿
った内周端に備えたところが図１の実施例とは異なる。
リテーナ４の短筒状部４Ｄは、円板状部分４’の内径部
からその両面に対して任意の角度で延び、その双方の先
端部にそこから延びる複数の突起状の分離防止部４Ｅを
備える。複数の分離防止部４Ｅは、その先端が形成する
仮想の円の径が第１の軌道輪１と第２の軌道輪２それぞ
れの中央穴１Ｂ，２Ｂの径、つまりそれらの内径よりも
大きく、第１の軌道輪１と第２の軌道輪２それぞれの内
周側に設けられた段差１Ａ、２Ａの最大径よりも小さく
なるように作られている。この軸受の組み立ては第１の
実施例と同様であるので、説明を省く。Next, in another embodiment shown in FIG. 2, the short cylindrical portion 4D is provided at the inner peripheral end along the central hole 4A of the disc-shaped portion 4 ′ of the retainer 4 as compared with the embodiment of FIG. Is different.
The short tubular portion 4D of the retainer 4 extends from the inner diameter portion of the disc-shaped portion 4 ′ at an arbitrary angle with respect to both surfaces thereof, and has a plurality of protrusion-shaped separation preventing portions 4E extending from the tip portions on both ends thereof. Prepare The plurality of separation preventing portions 4E have a virtual circle formed by the tip end thereof having a diameter larger than the diameters of the central holes 1B and 2B of the first bearing ring 1 and the second bearing ring 2, respectively, that is, their inner diameters. It is made smaller than the maximum diameter of the steps 1A, 2A provided on the inner peripheral side of each of the first bearing ring 1 and the second bearing ring 2. Since the assembly of this bearing is the same as that of the first embodiment, its explanation is omitted.
【００２０】 図３に示す第３の実施例は、第１の軌道
輪１と第２の軌道輪２をプレス加工にて形成したところ
に特徴があり、リテーナ４は図１に示した実施例と同様
な構造である。第１の軌道輪１と第２の軌道輪２にはそ
れぞれ、プレス加工時にボール３の転動溝となる円形状
溝１Ｃ，２Ｃが中央穴１Ｂ，２Ｂを中心に形成されてい
る。リテーナ４は前述のような外周部に短筒状部４Ｄと
複数の分離防止部４Ｅとを有し、第１の軌道輪１と第２
の軌道輪２の外周部分を複数の分離防止部４Ｅに圧入し
て組み立てが完成する。リテーナ４の分離防止部４Ｅが
第１の軌道輪１と第２の軌道輪２の外面に位置するが、
第１の軌道輪１と第２の軌道輪２の円形状溝１Ｃ，２Ｃ
に対応する外面は弧状の環状突起となっており、分離防
止部４Ｅは第１の軌道輪１と第２の軌道輪２の外面から
その環状突起と同程度又はそれ以下突出するだけなの
で、スラスト荷重を受ける際に悪影響が生じることはな
い。The third embodiment shown in FIG. 3 is characterized in that the first bearing ring 1 and the second bearing ring 2 are formed by press working, and the retainer 4 is the embodiment shown in FIG. It has the same structure as. Circular grooves 1C and 2C, which serve as rolling grooves for the balls 3 during press working, are formed in the first and second bearing rings 1 and 2 centering on the central holes 1B and 2B, respectively. The retainer 4 has the short tubular portion 4D and the plurality of separation prevention portions 4E on the outer peripheral portion as described above, and the first bearing ring 1 and the second bearing ring 4 are provided.
The outer peripheral portion of the bearing ring 2 is press-fitted into the plurality of separation preventing portions 4E to complete the assembly. The separation prevention portion 4E of the retainer 4 is located on the outer surfaces of the first bearing ring 1 and the second bearing ring 2,
Circular grooves 1C and 2C of the first bearing ring 1 and the second bearing ring 2
The outer surface corresponding to is an arcuate annular projection, and the separation prevention portion 4E only projects from the outer surfaces of the first bearing ring 1 and the second bearing ring 2 to the same extent as or less than the annular projection, so There is no adverse effect when receiving a load.
【００２１】 次に図４に示す第４の実施例は、図３に
示した実施例の変形例であり、プレス加工にて一対の軌
道輪１と２を形成し、このとき同時に中央円筒状部１Ｄ
を一方の軌道輪に形成すると共に、リテーナ４に一定間
隔で短筒状部４Ｄと分離防止部４Ｅを円板状部分４’に
対して交互に上方向、下方向になるように形成したこと
を特徴としている。Next, a fourth embodiment shown in FIG. 4 is a modification of the embodiment shown in FIG. 3, in which a pair of bearing rings 1 and 2 are formed by press working, and at the same time, a central cylindrical shape is formed. Part 1D
And one short ring portion 4D and a separation preventing portion 4E are formed on the retainer 4 at regular intervals so as to alternate upward and downward with respect to the disc-shaped portion 4 '. Is characterized by.
【００２２】 回転輪となる第１の軌道輪１の中央に
は、従来の中央穴に代わって中央円筒状部１Ｄが形成さ
れる。中央円筒状部１Ｄはフロッピーディスクの駆動装
置のスピンドルモータのスピンドルシャフトなどとして
用いられるものであり、その頭部はフロッピーディスク
（図示せず）などの着脱時にスムーズに行くように断面
弧状になっている。A central cylindrical portion 1D is formed in the center of the first bearing ring 1 serving as a rotating wheel, instead of the conventional central hole. The central cylindrical portion 1D is used as a spindle shaft of a spindle motor of a floppy disk drive, and its head has an arcuate cross section so that it can be smoothly moved when a floppy disk (not shown) is attached or detached. There is.
【００２３】 合成樹脂からなるリテーナ４は、その円
板状部分４’の外周部からその上下面に対してほぼ直角
に６０度間隔で交互に延びる断面Ｌ字状の分離防止機能
部４Ｅ’を備える。したがって、リテーナ４の円板状部
分４’の外周部からその上面に対してほぼ直角に延びる
断面Ｌ字状の分離防止機能部４Ｅ’とその下面に対して
ほぼ直角に延びる断面Ｌ字状の分離防止機能部４Ｅ’と
の間には６０度の位置ずれがある。この軸受の組み立て
も第１の実施例と同様であるので、説明を省く。The retainer 4 made of synthetic resin has a separation preventing function portion 4E ′ having an L-shaped cross section, which extends alternately from the outer peripheral portion of the disc-shaped portion 4 ′ at an interval of 60 degrees approximately at right angles to the upper and lower surfaces thereof. Prepare Therefore, the separation preventing function portion 4E ′ having an L-shaped section extending substantially at right angles from the outer peripheral portion of the disk-shaped portion 4 ′ of the retainer 4 and the L-shaped section having a substantially L-shaped extension extending at the lower surface thereof. There is a displacement of 60 degrees with respect to the separation prevention function part 4E '. The assembly of this bearing is also the same as that of the first embodiment, so the description thereof will be omitted.
【００２４】 次の実施例は、リテーナ４をプレス加工
により金属板から形成するものである。プレス加工によ
り金属板（図示せず）から打ち抜かれた状態のリテーナ
４は、その中央穴４Ａのほぼ中心から見てほぼ６０度毎
に放射外方向に延びる矩形部分を有し、その矩形部分を
交互に上方向、下方向に図５に示すように折り曲げるこ
とにより、各分離防止機能部４Ｅ’が形成される。ま
た、ボール３をそれぞれ保持するボール保持孔４Ｂをボ
ール３の直径よりも小さく形成しておき、ボール保持穴
４Ｂの放射方向の両側にあらかじめ形成されていた部分
を９０度以上起立させることにより、ボール３をボール
保持孔４Ｂと起立部４Ｆ、４Ｇとで保持している。この
軸受の組み立ても、金属製のリテーナ４の分離防止機能
部４Ｅ’の弾性を利用して第１の実施例と同様に行うこ
とができるので、説明を省く。In the next embodiment, the retainer 4 is formed from a metal plate by pressing. The retainer 4 punched out from a metal plate (not shown) by press working has a rectangular portion extending radially outward at an interval of approximately 60 degrees when viewed from the approximate center of the central hole 4A. By alternately bending upward and downward as shown in FIG. 5, each separation preventing functional portion 4E ′ is formed. Further, the ball holding holes 4B for holding the balls 3 are formed smaller than the diameter of the balls 3, and the preformed portions on both sides of the ball holding holes 4B in the radial direction are raised by 90 degrees or more. The ball 3 is held by the ball holding hole 4B and the upright portions 4F and 4G. Since this bearing can be assembled in the same manner as in the first embodiment by utilizing the elasticity of the separation preventing function portion 4E ′ of the metal retainer 4, the description thereof will be omitted.
【００２５】 次に図６（Ａ），（Ｂ），（Ｃ）に示す
各実施例は、転動体としてボール３の代わりにテーパー
付きのローラ３’を用いたものであり、これに伴いリテ
ーナ４はボール保持孔４Ｂに代えて矩形状のローラ保持
孔４Ｂ’を備える。この点を除いて、それぞれリテーナ
４は構造及び機能ともに図１、図２、図３に示したもの
とほぼ同様であるので、他の説明を省略する。Next, in each of the embodiments shown in FIGS. 6 (A), (B), and (C), a tapered roller 3 ′ is used instead of the ball 3 as the rolling element, and accordingly, the retainer is used. 4 has a rectangular roller holding hole 4B 'instead of the ball holding hole 4B. Except for this point, each retainer 4 has substantially the same structure and function as those shown in FIGS. 1, 2 and 3, and therefore other description will be omitted.
【００２６】 なお、以上の実施例では分離防止部又は
分離防止機能部を両側に３個ずつ備えたが、必要に応じ
てほぼ１８０度ずれてある長さのものを２個、又は４個
以上備えても勿論よい。また、分離防止強度を高めるた
めに、図１と図２のような構造の一つのリテーナを用い
ても良いし、あるいはそのような構造の単一のリテーナ
を組み合わせて用いて分離防止を図っても良い。In the above embodiment, the separation preventing portion or the separation preventing function portion is provided on each side by three pieces, but if necessary, two pieces or four pieces or more having lengths shifted by about 180 degrees are provided. Of course you may prepare. In addition, in order to increase the separation prevention strength, one retainer having the structure shown in FIGS. 1 and 2 may be used, or a single retainer having such a structure may be used in combination to prevent the separation. Is also good.
【００２７】[0027]
【発明の効果】以上述べたように本発明では、独特の構
造のリテーナを用いることにより、一対の軌道輪とリテ
ーナと転動体との３部材だけを組み合わせるだけで、分
離することのないスラスト軸受を得ることができる。し
たがって、部材個数が少なくなると共に、組み立てが容
易になるので、安価なスラスト軸受を提供することがで
きる。As described above, according to the present invention, by using the retainer having the unique structure, the thrust bearing which is not separated only by combining the three members of the pair of bearing rings, the retainer and the rolling element. Can be obtained. Therefore, the number of members is reduced and the assembly is facilitated, so that an inexpensive thrust bearing can be provided.
【図１】本発明にかかるスラスト軸受の第１の実施例を
示す図である。FIG. 1 is a diagram showing a first embodiment of a thrust bearing according to the present invention.
【図２】本発明にかかるスラスト軸受の第２の実施例を
示す図である。FIG. 2 is a diagram showing a second embodiment of the thrust bearing according to the present invention.
【図３】本発明にかかるスラスト軸受の第３の実施例を
示す図である。FIG. 3 is a diagram showing a third embodiment of the thrust bearing according to the present invention.
【図４】本発明にかかるスラスト軸受の第４の実施例を
示す図である。FIG. 4 is a diagram showing a fourth embodiment of the thrust bearing according to the present invention.
【図５】本発明にかかるスラスト軸受の第５の実施例を
示す図である。FIG. 5 is a diagram showing a fifth embodiment of the thrust bearing according to the present invention.
【図６】本発明にかかるスラスト軸受の第６の実施例を
示す図である。FIG. 6 is a diagram showing a sixth embodiment of the thrust bearing according to the present invention.
【図７】従来のスラスト軸受を説明するための図であ
る。FIG. 7 is a diagram for explaining a conventional thrust bearing.
【図８】従来の別のスラスト軸受を説明するための図で
ある。FIG. 8 is a diagram for explaining another conventional thrust bearing.
【図９】従来の別のスラスト軸受を説明するための図で
ある。FIG. 9 is a diagram for explaining another conventional thrust bearing.
１・・・・第１の軌道輪 １Ａ・・・
段差 １Ｂ・・・中央穴 １Ｃ・・・
転動溝 ２・・・・第２の軌道輪 ２Ａ・・・
段差 ２Ｂ・・・中央穴 ２Ｃ・・・
転動溝 ３・・・・ボール（転動体） ３’・・・
ローラ（転動体） ４・・・・リテーナ ４’・・・
円板状部分 ４Ａ・・・中央穴 ４Ｂ・・・
ボール保持孔 ４Ｂ’・・ローラ保持孔 ４Ｃ・・・
突起 ４Ｄ・・・短筒状部 ４Ｅ・・・
分離防止部 ４Ｅ’・・分離防止部 ４Ｆ・・・
起立部 ４Ｇ・・・起立部 ５・・・・シールド部材1 ... 1st bearing ring 1A ...
Step 1B ・ ・ ・ Center hole 1C ・ ・ ・
Rolling groove 2 ... Second bearing ring 2A ...
Step 2B ... Center hole 2C ...
Rolling groove 3 ... Ball (rolling element) 3 '...
Roller (rolling element) 4 ... Retainer 4 '...
Disc-shaped part 4A ・ ・ ・ Center hole 4B ・ ・ ・
Ball holding hole 4B '... Roller holding hole 4C ...
Protrusion 4D ... Short tubular portion 4E ...
Separation prevention unit 4E '... Separation prevention unit 4F ...
Standing part 4G ... Standing part 5 ... Shield member
Claims (5)
道輪の間を転動する複数の転動体、及びこれら転動体を
保持するリテーナからなり、スラスト方向荷重を受ける
のに適した軸受において、前記リテーナは前記第１の軌
道輪と第２の軌道輪それぞれの外周縁まで延びる分離防
止機能部を備え、前記第１の軌道輪と第２の軌道輪との
分離を防ぐことを特徴とするスラスト軸受。1. A first bearing ring, a second bearing ring, a plurality of rolling elements rolling between these bearing rings, and a retainer holding these rolling elements, which are suitable for receiving a load in the thrust direction. In the bearing, the retainer is provided with a separation preventing function portion extending to outer peripheral edges of the first and second races, respectively, to prevent separation of the first and second races. Thrust bearing characterized by.
有する第２の軌道輪、これら軌道輪の間を転動する複数
の転動体、及びこれら転動体を保持するリテーナからな
り、スラスト方向荷重を受けるのに適した軸受におい
て、前記リテーナは前記第１の軌道輪と第２の軌道輪そ
れぞれの前記中央穴に沿った内周縁まで延びる分離防止
機能部を備え、前記第１の軌道輪と第２の軌道輪との分
離を防ぐことを特徴とするスラスト軸受。2. A first bearing ring having a central hole, a second bearing ring having a central hole, a plurality of rolling elements rolling between these bearing rings, and a retainer holding these rolling elements, In a bearing suitable for receiving a load in the thrust direction, the retainer includes a separation preventing function portion extending to an inner peripheral edge along the central hole of each of the first bearing ring and the second bearing ring. A thrust bearing which prevents separation of the bearing ring and the second bearing ring.
道輪、これら軌道輪の間を転動する複数の転動体、及び
これら転動体を保持するリテーナからなり、スラスト方
向荷重を受けるのに適した軸受において、前記リテーナ
は前記第１の軌道輪の外周縁まで延びる分離防止機能部
を備えると共に、前記第２の軌道輪の前記中央穴に沿っ
た内周縁まで延びる分離防止機能部を備え、前記第１の
軌道輪と第２の軌道輪との分離を防ぐことを特徴とする
スラスト軸受。3. A first bearing ring, a second bearing ring having a central hole, a plurality of rolling elements rolling between these bearing rings, and a retainer holding these rolling elements, the load in the thrust direction being provided. In a bearing suitable for receiving, the retainer includes a separation preventing function portion extending to an outer peripheral edge of the first bearing ring, and a separation preventing function extending to an inner peripheral edge of the second bearing ring along the central hole. A thrust bearing comprising a portion and preventing separation of the first bearing ring and the second bearing ring.
２の軌道輪と対向するそれぞれの面に突起を有すること
を特徴とする請求項１ないし請求項３のいずれかに記載
のスラスト軸受。4. The thrust according to claim 1, wherein the retainer has a protrusion on each surface facing the first bearing ring and the second bearing ring. bearing.
１の軌道輪と一体的に形成された中央円筒状部を備えた
ことを特徴とする請求項１又は請求項３のいずれかに記
載のスラスト軸受。5. The first orbital ring is provided with a central cylindrical portion integrally formed with the first orbital ring at a central portion thereof. The thrust bearing according to any of the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35186695A JPH09177769A (en) | 1995-12-27 | 1995-12-27 | Thrust bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35186695A JPH09177769A (en) | 1995-12-27 | 1995-12-27 | Thrust bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09177769A true JPH09177769A (en) | 1997-07-11 |
Family
ID=18420153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35186695A Withdrawn JPH09177769A (en) | 1995-12-27 | 1995-12-27 | Thrust bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09177769A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2823813A1 (en) * | 2001-04-20 | 2002-10-25 | Nadella | Cage for axial release bearing comprises circumferential bearing cavities, two cavities forming group in which angle between cavity median lines is less than angle between median lines of lateral and adjacent cavity |
| JP2008223905A (en) * | 2007-03-13 | 2008-09-25 | Jtekt Corp | Bearing for strut |
| JP2008232339A (en) * | 2007-03-22 | 2008-10-02 | Nsk Ltd | Retainer for thrust needle bearing and thrust needle bearing |
-
1995
- 1995-12-27 JP JP35186695A patent/JPH09177769A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2823813A1 (en) * | 2001-04-20 | 2002-10-25 | Nadella | Cage for axial release bearing comprises circumferential bearing cavities, two cavities forming group in which angle between cavity median lines is less than angle between median lines of lateral and adjacent cavity |
| JP2008223905A (en) * | 2007-03-13 | 2008-09-25 | Jtekt Corp | Bearing for strut |
| JP2008232339A (en) * | 2007-03-22 | 2008-10-02 | Nsk Ltd | Retainer for thrust needle bearing and thrust needle bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20030304 |