JP2003004047A - Ball bearing - Google Patents
Ball bearingInfo
- Publication number
- JP2003004047A JP2003004047A JP2001188445A JP2001188445A JP2003004047A JP 2003004047 A JP2003004047 A JP 2003004047A JP 2001188445 A JP2001188445 A JP 2001188445A JP 2001188445 A JP2001188445 A JP 2001188445A JP 2003004047 A JP2003004047 A JP 2003004047A
- Authority
- JP
- Japan
- Prior art keywords
- ball
- cage
- retainer
- balls
- 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.)
- Pending
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
- F16C33/3887—Details of individual pockets, e.g. shape or ball retaining means
-
- 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
- F16C33/3837—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages
- F16C33/3843—Massive or moulded cages having cage pockets surrounding the balls, e.g. machined window cages formed as one-piece cages, i.e. monoblock 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
- F16C19/16—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 a single row of balls
- F16C19/163—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 a single row of balls with angular contact
-
- 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
- F16C2300/00—Application independent of particular apparatuses
- F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、内外輪間に装備す
る複数個の玉を所定の間隔に保持する保持器として、玉
の外面に接触することで保持器自体の軸受径方向の変位
を規制する係止部を前記玉を収容するポケット穴の外輪
側又は内輪側の縁に突設した玉案内形保持器を備えた玉
軸受に関するものである。
【０００２】
【従来の技術】図８乃至図１２は、従来の玉軸受を示し
たものである。図８乃至図１０に示した玉軸受１は、内
輪３と外輪５との間に複数個の玉７を装備すると共に、
内外輪３，５間の複数個の玉７を所定の間隔に保持する
保持器９を装備している。
【０００３】保持器９は、内外輪３，５間を周回する略
円筒状の本体部９ａに玉７を収容する複数個のポケット
穴９ｂを貫通形成している。この例のポケット穴９ｂ
は、玉７よりも大きな内径のストレート穴である。ま
た、この保持器９は、玉７の外面に接触することで保持
器自体の軸受径方向の変位を規制する係止部９ｃを備え
た玉案内形保持器である。係止部９ｃは、ポケット穴９
ｂの内輪側の縁に突設されている。
【０００４】本体部９ａの内輪側には、ポケット穴９ｂ
の内径よりも狭い幅で、肉厚増大部９ｄが隆起形成され
ている。そして、前述した係止部９ｃは、図９及び図１
０に示すように、肉厚増大部９ｄのポケット穴９ｂに臨
む端縁部を、ポケット穴９ｂの内側に張り出させたもの
である。係止部９ｃは、先端に、玉７の外面に線接触又
は面接触する円弧状の接触部１０を有している。
【０００５】図１１及び図１２は、従来の別の玉案内形
保持器１１を示したものである。この保持器１１は、玉
軸受の内外輪間を周回する略円筒状の本体部１１ａに玉
７を収容する複数個のポケット穴１１ｂを貫通形成して
いる点、ポケット穴１１ｂがストレート穴である点、ポ
ケット穴１１ｂの内輪側の縁に、玉７の外面に接触する
ことで保持器自体の軸受径方向の変位を規制する係止部
１１ｃを突設している点、係止部１１ｃの先端に、玉７
の外面に線接触又は面接触する円弧状の接触部１３が形
成されている点などで、図９に示した保持器９と共通し
ている。
【０００６】しかし、保持器１１の場合は、本体部１１
ａに、前述した保持器９で示した肉厚増大部が無く、図
１２に示すように、接触部１３がポケット穴１１ｂの全
周に渡って連続した円環状に形成されている点が、図１
０に示した保持器９の場合と異なる。
【０００７】
【発明が解決しようとする課題】ところで、前述した従
来の各保持器９，１１は、いずれも玉７と係止部９
ｃ，，１１ｃとの間の接触域が長大で、内外輪の相対回
転時に、玉と保持器との間に大きな接触抵抗が生じて、
軸受を高速運転した場合に、接触抵抗による発熱量が大
きく、昇温によって軸受の回転性能が低下する虞があっ
た。また、玉と保持器との間に働く接触抵抗が大きいた
め、軸受を高速運転した場合に、摩耗が進行し易く、更
には、大きな接触抵抗が保持器９，１１の自励振動を起
こして騒音である保持器音を招く虞もあった。また、玉
と保持器との間の接触抵抗の上昇を抑えるのに、長大な
接触部１０，１３の全長に渡って、高精度な仕上げ加工
が必要となるため、加工コストが増大するという問題も
あった。
【０００８】本発明は上記事情に鑑みてなされたもの
で、玉と保持器との間の接触抵抗を小さく抑えて、接触
抵抗に起因する発熱や摩耗を防止し、良好な回転性能の
長期維持が可能で、また、保持器音の発生を抑えて静粛
性を向上させることができ、更には、加工コストの低減
によって製造コストの低減を図ることも可能な玉軸受を
提供することを目的とする。
【０００９】
【課題を解決するための手段】上記目的を達成するため
の本発明に係る玉軸受は、内外輪間に装備する複数個の
玉を所定の間隔に保持する保持器として、玉の外面に接
触することで保持器自体の軸受径方向の変位を規制する
係止部を前記玉を収容するポケット穴の外輪側又は内輪
側の縁に突設した玉案内形保持器を備えた玉軸受におい
て、前記玉案内形保持器の係止部として、先端が玉に点
接触する複数個の係止突起を備えたことを特徴とする。
【００１０】そして、上記構成によれば、保持器の係止
部と玉との間の接触形態が点接触で、線接触又は面接触
させていた従来の場合と比較すると、保持器と玉との間
の接触面積が大幅に減少し、その結果、玉と保持器との
間の接触抵抗を小さく抑えることができる。また、保持
器と玉との間の接触抵抗の低減によって、軸受を高速運
転した場合にも、保持器音の発生原因である保持器の自
励振動が起こり難くなる。更には、保持器と玉との接触
が点接触で、高精度な仕上げ加工が必要となる係止部の
接触部面積が小さいため、高精度な仕上げ加工が局部的
な微小面積で済む。
【００１１】
【発明の実施の形態】以下、本発明に係る玉軸受の好適
な実施の形態を添付図面に基づいて詳細に説明する。図
１乃至図５は本発明に係る玉軸受の第１の実施の形態を
示したもので、図１は本発明に係る玉軸受の第１の実施
の形態の要部の縦断面図、図２は図１に示した保持器の
ポケット穴のＤ−Ｄ線に沿う断面図、図３は図２のＥ矢
視図、図４は図３に示した保持器の玉を除いた状態の説
明図、図５は図４のＦ−Ｆ線に沿う断面図である。
【００１２】この第１の実施の形態の玉軸受２１は、内
輪３と外輪５との間に複数個の球形の玉７を装備すると
共に、内外輪３，５間の複数個の玉７を所定の間隔に保
持する保持器２３を装備している。
【００１３】保持器２３は、内外輪３，５間を周回する
略円筒状の本体部２３ａに玉７を収容する複数個のポケ
ット穴２３ｂを貫通形成している。この例のポケット穴
２３ｂは、玉７よりも大きな内径のストレート穴であ
る。また、この保持器２３は、玉７の外面に接触するこ
とで保持器２３自体の軸受径方向の変位を規制する係止
部２３ｃを備えた玉案内形保持器である。本実施の形態
の場合、係止部２３ｃは、ポケット穴２３ｂの内輪３側
の縁に突設されている。
【００１４】本体部２３ａの内輪３側には、ポケット穴
２３ｂの内径よりも狭い幅で、肉厚増大部２３ｄが隆起
形成されている。そして、前述した係止部２３ｃは、図
２及び図４に示すように、肉厚増大部２３ｄのポケット
穴２３ｂに臨む端縁部に、先端が玉７に点接触する係止
突起２５を形成した構成である。
【００１５】各係止部２３ｃは、肉厚増大部２３ｄのポ
ケット穴２３ｂに臨む端縁部の両端に形成されている。
従って、本実施の形態では、ポケット穴２３ｂを挟んで
対向状態にある２対の係止突起２５が、それぞれの先端
を玉７の外面に点接触させることで、保持器２３自体の
軸受径方向への変位を規制する。肉厚増大部２３ｄのポ
ケット穴２３ｂに臨む端縁部の両端の係止突起２５は、
肉厚増大部２３ｄの端縁部の中央を凹んだ曲面形状２７
にすることで、形成されている。
【００１６】以上に説明した玉軸受２１では、保持器２
３の係止部２３ｃと玉７との間の接触形態が点接触で、
線接触又は面接触させていた従来の場合と比較すると、
保持器２３と玉７との間の接触面積が大幅に減少し、そ
の結果、玉７と保持器２３との間の接触抵抗を小さく抑
えることができ、接触抵抗に起因する発熱や摩耗を防止
し、良好な回転性能の長期維持が可能になる。
【００１７】また、保持器２３と玉７との間の接触抵抗
の低減によって、軸受を高速運転した場合にも、保持器
２３音の発生原因である保持器２３の自励振動が起こり
難くなり、保持器２３音の発生を抑えて静粛性を向上さ
せることができる。
【００１８】更には、保持器２３と玉７との接触が点接
触で、高精度な仕上げ加工が必要となる係止部２３ｃの
接触部面積が小さいため、高精度な仕上げ加工が局部的
な微小面積で済み、加工コストの低減によって製造コス
トの低減を図ることもできる。
【００１９】図６及び図７は、本発明に係る玉軸受で使
用する玉案内形保持器の第２の実施の形態を示したもの
である。本実施の形態の保持器３３は、略円筒状を成す
本体部３３ａの内輪側に肉厚増大部３３ｄが隆起形成さ
れ、且つ、玉７を収容するするポケット穴３３ｂが本体
部３３ａを貫通するストレート穴に形成される点、及
び、ポケット穴３３ｂに臨む肉厚増大部３３ｄの端縁部
の両端に玉７に点接触する係止突起３５が装備される点
等は、第１の実施の形態の保持器２３と共通している。
しかし、本実施の形態の場合は、係止突起３５が、図６
に示すように、先端を外輪側に向けて突出した形態とな
っている点が、第１実施の形態の場合と異なっている。
このように、係止突起３５の突出方向は、任意に設定す
ることができる。
【００２０】また、玉との接触で保持器自体の軸受径方
向の変位を規制する係止部の装備位置は、上記実施の形
態で示したポケット穴の内輪側の縁に限らない。係止部
は、ポケット穴の外輪側の開口縁に突設することも可能
である。また、保持器の本体部は、肉厚増大部を装備し
ない構造とすることもできる。
【００２１】更に、係止突起の装備数は、上記の実施の
形態に限らない。例えば、上記の実施の形態では、係止
突起の総数は４であるが、ポケット穴の一方の開口縁
に、穴の周方向に等間隔の３箇所に係止突起を装備する
構成とすることも可能である。また、係止突起の総数
を、５以上にすることも可能である。
【００２２】
【発明の効果】本発明の玉軸受によれば、保持器の係止
部と玉との間の接触形態が点接触で、線接触又は面接触
させていた従来の場合と比較すると、保持器と玉との間
の接触面積が大幅に減少し、その結果、玉と保持器との
間の接触抵抗を小さく抑えることができ、接触抵抗に起
因する発熱や摩耗を防止し、良好な回転性能の長期維持
が可能になる。また、保持器と玉との間の接触抵抗の低
減によって、軸受を高速運転した場合にも、保持器音の
発生原因である保持器の自励振動が起こり難くなり、保
持器音の発生を抑えて静粛性を向上させることができ
る。更には、保持器と玉との接触が点接触で、高精度な
仕上げ加工が必要となる係止部の接触部面積が小さいた
め、高精度な仕上げ加工が局部的な微小面積で済み、加
工コストの低減によって製造コストの低減を図ることも
できる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a retainer for holding a plurality of balls provided between inner and outer rings at a predetermined interval by contacting the outer surface of the balls. The present invention relates to a ball bearing provided with a ball guide type cage in which a locking portion for restricting displacement in the bearing radial direction of the cage itself is projected from the outer ring side or inner ring side edge of the pocket hole for accommodating the ball. FIG. 8 to FIG. 12 show a conventional ball bearing. The ball bearing 1 shown in FIGS. 8 to 10 is equipped with a plurality of balls 7 between the inner ring 3 and the outer ring 5,
A cage 9 for holding a plurality of balls 7 between the inner and outer rings 3 and 5 at a predetermined interval is provided. The retainer 9 is formed with a plurality of pocket holes 9b penetrating through a substantially cylindrical main body portion 9a that circulates between the inner and outer rings 3 and 5. Pocket hole 9b in this example
Is a straight hole having an inner diameter larger than that of the ball 7. The cage 9 is a ball guide type cage having a locking portion 9 c that regulates displacement of the cage itself in the bearing radial direction by contacting the outer surface of the ball 7. The locking portion 9c has a pocket hole 9
It protrudes at the inner ring side edge of b. A pocket hole 9b is formed on the inner ring side of the main body 9a.
A wall thickness increasing portion 9d is formed in a bulge with a width narrower than the inner diameter. And the latching | locking part 9c mentioned above is FIG.9 and FIG.1.
As shown in 0, the end edge portion facing the pocket hole 9b of the thickened portion 9d is projected inside the pocket hole 9b. The locking portion 9 c has an arcuate contact portion 10 that makes line contact or surface contact with the outer surface of the ball 7 at the tip. FIGS. 11 and 12 show another conventional ball guide type retainer 11. The cage 11 has a substantially cylindrical main body portion 11a that circulates between the inner and outer rings of a ball bearing, and has a plurality of pocket holes 11b that receive the balls 7, and the pocket hole 11b is a straight hole. The point which has the latching | locking part 11c which regulates the displacement of the bearing radial direction of a cage | basket itself by contacting the outer surface of the ball | bowl 7 by the edge of the inner ring | wheel side of the pocket hole 11b protruding, Ball 7 at the tip
9 is common to the cage 9 shown in FIG. 9 in that an arc-shaped contact portion 13 that makes line contact or surface contact is formed on the outer surface. However, in the case of the cage 11, the main body 11
a, there is no thickened portion shown by the cage 9 described above, and as shown in FIG. 12, the contact portion 13 is formed in a continuous annular shape over the entire circumference of the pocket hole 11b. FIG.
This is different from the case of the cage 9 shown as 0. By the way, each of the conventional cages 9 and 11 described above has a ball 7 and a locking portion 9.
The contact area between c, 11c is long, and during the relative rotation of the inner and outer rings, a large contact resistance occurs between the ball and the cage,
When the bearing is operated at a high speed, the amount of heat generated by the contact resistance is large, and there is a concern that the rotational performance of the bearing may deteriorate due to the temperature rise. In addition, since the contact resistance acting between the ball and the cage is large, wear tends to proceed when the bearing is operated at a high speed. Furthermore, the large contact resistance causes self-excited vibration of the cages 9 and 11. There was also a risk of causing cage noise, which is noise. In addition, in order to suppress an increase in contact resistance between the ball and the cage, high-precision finishing is required over the entire length of the long contact portions 10 and 13, which increases the processing cost. There was also. The present invention has been made in view of the above circumstances, and suppresses the contact resistance between the ball and the cage to prevent heat generation and wear due to the contact resistance, and to maintain good rotation performance for a long period of time. It is also possible to provide a ball bearing that can improve the quietness by suppressing the generation of cage noise, and can reduce the manufacturing cost by reducing the processing cost. To do. In order to achieve the above object, a ball bearing according to the present invention provides a ball bearing as a retainer for holding a plurality of balls provided between inner and outer rings at a predetermined interval. A ball provided with a ball guide type cage that protrudes from the outer ring side or the inner ring side edge of the pocket hole for accommodating the ball with a locking portion that regulates displacement in the bearing radial direction of the cage itself by contacting the outer surface. The bearing is characterized in that a plurality of locking protrusions whose tips are in point contact with the balls are provided as locking portions of the ball guide type cage. [0010] According to the above configuration, the cage and the ball are in contact with each other in the contact form between the retaining portion of the cage and the ball in a point contact, line contact or surface contact. As a result, the contact resistance between the ball and the cage can be kept small. Further, due to the reduction of the contact resistance between the cage and the ball, even when the bearing is operated at high speed, the self-excited vibration of the cage that is the cause of the cage noise is less likely to occur. Furthermore, since the contact between the cage and the ball is a point contact and the contact area of the engaging portion that requires high-precision finishing is small, high-precision finishing can be achieved with a small local area. DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the ball bearing according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 to FIG. 5 show a first embodiment of a ball bearing according to the present invention. FIG. 1 is a longitudinal sectional view of a main part of the first embodiment of the ball bearing according to the present invention. 2 is a cross-sectional view taken along the line DD of the pocket hole of the cage shown in FIG. 1, FIG. 3 is a view taken along arrow E in FIG. 2, and FIG. 4 is a state in which the balls of the cage shown in FIG. Explanatory drawing and FIG. 5 are sectional drawings which follow the FF line | wire of FIG. The ball bearing 21 of the first embodiment is provided with a plurality of spherical balls 7 between the inner ring 3 and the outer ring 5 and a plurality of balls 7 between the inner and outer rings 3 and 5. It is equipped with a cage 23 that holds it at a predetermined interval. The cage 23 is formed with a plurality of pocket holes 23b through which a ball 7 is accommodated in a substantially cylindrical main body 23a that circulates between the inner and outer rings 3 and 5. The pocket hole 23 b in this example is a straight hole having an inner diameter larger than that of the ball 7. The cage 23 is a ball guide type cage having a locking portion 23 c that regulates displacement of the cage 23 itself in the bearing radial direction by contacting the outer surface of the ball 7. In the case of the present embodiment, the locking portion 23c protrudes from the edge on the inner ring 3 side of the pocket hole 23b. On the inner ring 3 side of the main body 23a, a thickened portion 23d is formed with a width narrower than the inner diameter of the pocket hole 23b. As shown in FIGS. 2 and 4, the locking portion 23 c described above forms a locking protrusion 25 whose tip is in point contact with the ball 7 at the end edge facing the pocket hole 23 b of the thickness increasing portion 23 d. This is the configuration. Each locking portion 23c is formed at both ends of the edge portion facing the pocket hole 23b of the thickness increasing portion 23d.
Therefore, in the present embodiment, the two pairs of locking projections 25 that are opposed to each other across the pocket hole 23b make point contact with the outer surface of the ball 7, so that the bearing radial direction of the cage 23 itself. Regulate the displacement to. The locking projections 25 at both ends of the edge portion facing the pocket hole 23b of the wall thickness increasing portion 23d are
Curved surface shape 27 in which the center of the edge of the thickened portion 23d is recessed.
It is formed by. In the ball bearing 21 described above, the cage 2
The contact form between the three locking portions 23c and the ball 7 is a point contact,
Compared to the conventional case of line contact or surface contact,
The contact area between the cage 23 and the ball 7 is greatly reduced. As a result, the contact resistance between the ball 7 and the cage 23 can be kept small, and heat generation and wear due to the contact resistance are prevented. In addition, good rotation performance can be maintained for a long time. Further, due to the reduction of the contact resistance between the cage 23 and the ball 7, even when the bearing is operated at high speed, the self-excited vibration of the cage 23, which is the cause of the cage 23 noise, is less likely to occur. The silence can be improved by suppressing the generation of the sound of the cage 23. Furthermore, since the contact between the cage 23 and the ball 7 is a point contact and the contact portion area of the locking portion 23c, which requires high-precision finishing, is small, high-precision finishing is locally performed. A small area is sufficient, and the manufacturing cost can be reduced by reducing the processing cost. 6 and 7 show a second embodiment of the ball guide type cage used in the ball bearing according to the present invention. In the retainer 33 of the present embodiment, a thickened portion 33d is formed on the inner ring side of the substantially cylindrical main body portion 33a, and a pocket hole 33b for receiving the ball 7 penetrates the main body portion 33a. The point formed in the straight hole and the point that the locking protrusion 35 that makes point contact with the ball 7 is provided at both ends of the edge of the thickened portion 33d facing the pocket hole 33b are the first embodiment. It is common with the cage 23 of the form.
However, in the case of the present embodiment, the locking projection 35 is not shown in FIG.
As shown in FIG. 2, the point that the tip protrudes toward the outer ring side is different from the case of the first embodiment.
Thus, the protruding direction of the locking protrusion 35 can be set arbitrarily. Further, the position of the locking portion for restricting the displacement in the bearing radial direction of the cage itself by contact with the ball is not limited to the edge on the inner ring side of the pocket hole shown in the above embodiment. The locking portion can also project from the opening edge on the outer ring side of the pocket hole. Moreover, the main body part of the cage may be structured not to be equipped with a thickness increasing part. Furthermore, the number of engaging projections is not limited to the above embodiment. For example, in the above-described embodiment, the total number of the locking protrusions is 4, but the locking protrusions are provided at three positions at equal intervals in the circumferential direction of the hole on one opening edge of the pocket hole. Is also possible. Further, the total number of the locking protrusions can be 5 or more. According to the ball bearing of the present invention, the contact form between the retaining portion of the cage and the ball is a point contact, compared with the conventional case where the contact is a line contact or a surface contact. The contact area between the cage and the ball is greatly reduced, and as a result, the contact resistance between the ball and the cage can be kept small, preventing heat generation and wear due to the contact resistance, good Long-term rotation performance can be maintained. In addition, by reducing the contact resistance between the cage and the ball, even when the bearing is operated at high speed, the self-excited vibration of the cage that is the cause of the cage noise is less likely to occur, and the cage noise is not generated. It can be suppressed and quietness can be improved. Furthermore, the contact between the cage and the ball is point contact, and the contact area of the locking part that requires high-precision finishing is small, so high-precision finishing can be done with a very small local area. The manufacturing cost can be reduced by reducing the cost.
【図面の簡単な説明】
【図１】本発明に係る玉軸受の第１の実施の形態の要部
の縦断面図である。
【図２】図１に示した保持器のポケット穴のＤ−Ｄ線に
沿う断面図である。
【図３】図２のＥ矢視図である。
【図４】図３に示した保持器の玉を除いた状態の説明図
である。
【図５】図４のＦ−Ｆ線に沿う断面図である。
【図６】本発明に係る玉軸受の保持器の第２の実施の形
態の要部の横断面図である。
【図７】図６に示した保持器のＧ矢視図である。
【図８】従来の玉軸受の要部の縦断面図である。
【図９】図８に示した保持器のポケット穴のＡ−Ａ線に
沿う断面図である。
【図１０】図９のＢ矢視図である。
【図１１】従来の別の保持器のポケット穴の横断面図で
ある。
【図１２】図１１のＣ矢視図である。
【符号の説明】
３ 内輪
５ 外輪
７ 玉
２１ 玉軸受
２３ 保持器
２３ａ 本体部
２３ｂ ポケット穴
２３ｃ 係止部
２３ｄ 肉厚増大部
２５ 係止突起
３３ 保持器
３３ａ 本体部
３３ｂ ポケット穴
３３ｄ 肉厚増大部
３５ 係止突起BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of an essential part of a ball bearing according to a first embodiment of the present invention. 2 is a cross-sectional view taken along line DD of the pocket hole of the cage shown in FIG. 1. FIG. FIG. 3 is a view on arrow E in FIG. 2; 4 is an explanatory view showing a state in which a ball of the cage shown in FIG. 3 is removed. FIG. 5 is a cross-sectional view taken along line FF in FIG. FIG. 6 is a cross-sectional view of a main part of a second embodiment of a ball bearing retainer according to the present invention. 7 is a G arrow view of the cage shown in FIG. 6. FIG. FIG. 8 is a longitudinal sectional view of a main part of a conventional ball bearing. 9 is a cross-sectional view taken along line AA of the pocket hole of the cage shown in FIG. 10 is a view taken in the direction of arrow B in FIG. 9; FIG. 11 is a cross-sectional view of a pocket hole of another conventional cage. 12 is a view taken in the direction of arrow C in FIG. [Explanation of Symbols] 3 Inner ring 5 Outer ring 7 Ball 21 Ball bearing 23 Cage 23a Main body part 23b Pocket hole 23c Locking part 23d Thickness increasing part 25 Locking projection 33 Cage 33a Main part 33b Pocket hole 33d Thickening part 35 Locking projection
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松山 直樹 神奈川県藤沢市鵠沼神明１丁目５番50号 日本精工株式会社内 Ｆターム(参考） 3J101 AA02 AA32 AA62 BA34 FA01 FA31 FA44 FA60 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Naoki Matsuyama 1-5-50 Kakinuma Shinmei, Fujisawa, Kanagawa NSK Ltd. F-term (reference) 3J101 AA02 AA32 AA62 BA34 FA01 FA31 FA44 FA60
Claims (1)
間隔に保持する保持器として、玉の外面に接触すること
で保持器自体の軸受径方向の変位を規制する係止部を前
記玉を収容するポケット穴の外輪側又は内輪側の縁に突
設した玉案内形保持器を備えた玉軸受において、 前記玉案内形保持器の係止部として、先端が玉に点接触
する複数個の係止突起を備えたことを特徴とする玉軸
受。[Claims] [Claim 1] As a cage for holding a plurality of balls provided between inner and outer rings at a predetermined interval, the bearing itself is displaced in the bearing radial direction by contacting the outer surface of the balls. In a ball bearing provided with a ball guide type cage that protrudes from the outer ring side or inner ring side edge of the pocket hole for accommodating the ball, A ball bearing comprising a plurality of locking projections that make point contact with the ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001188445A JP2003004047A (en) | 2001-06-21 | 2001-06-21 | Ball bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001188445A JP2003004047A (en) | 2001-06-21 | 2001-06-21 | Ball bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003004047A true JP2003004047A (en) | 2003-01-08 |
Family
ID=19027546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001188445A Pending JP2003004047A (en) | 2001-06-21 | 2001-06-21 | Ball bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003004047A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7766553B2 (en) | 2004-12-07 | 2010-08-03 | Jtekt Corporation | Ball bearing retainer, and ball bearing employing the same |
| DE102004018868B4 (en) * | 2003-04-18 | 2014-04-30 | Ntn Corp. | Resin cage and angular contact ball bearings |
| CN107605949A (en) * | 2017-11-10 | 2018-01-19 | 江苏格林机械有限公司 | A kind of bearing |
| DE102004045588B4 (en) * | 2003-09-19 | 2018-02-22 | Ntn Corporation | Rolling body holder and angular contact ball bearing assembly, wherein the same is used |
| IT201800009709A1 (en) | 2018-10-24 | 2020-04-24 | Skf Ab | BEARING UNIT WITH RETENTION CAGE |
| IT201900013689A1 (en) | 2019-08-02 | 2021-02-02 | Skf Ab | BEARING UNIT WITH RETENTION CAGE |
| CN117759630A (en) * | 2024-02-22 | 2024-03-26 | 上海骋海新能源科技有限公司 | Ball bearing |
-
2001
- 2001-06-21 JP JP2001188445A patent/JP2003004047A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004018868B4 (en) * | 2003-04-18 | 2014-04-30 | Ntn Corp. | Resin cage and angular contact ball bearings |
| DE102004045588B4 (en) * | 2003-09-19 | 2018-02-22 | Ntn Corporation | Rolling body holder and angular contact ball bearing assembly, wherein the same is used |
| US7766553B2 (en) | 2004-12-07 | 2010-08-03 | Jtekt Corporation | Ball bearing retainer, and ball bearing employing the same |
| CN107605949A (en) * | 2017-11-10 | 2018-01-19 | 江苏格林机械有限公司 | A kind of bearing |
| IT201800009709A1 (en) | 2018-10-24 | 2020-04-24 | Skf Ab | BEARING UNIT WITH RETENTION CAGE |
| DE102019215496A1 (en) | 2018-10-24 | 2020-04-30 | Aktiebolaget Skf | Bearing unit with holding cage |
| US11035409B2 (en) | 2018-10-24 | 2021-06-15 | Aktiebolaget Skf | Bearing unit with retaining cage |
| IT201900013689A1 (en) | 2019-08-02 | 2021-02-02 | Skf Ab | BEARING UNIT WITH RETENTION CAGE |
| US11365761B2 (en) | 2019-08-02 | 2022-06-21 | Aktiebolaget Skf | Bearing unit with retaining cage |
| CN117759630A (en) * | 2024-02-22 | 2024-03-26 | 上海骋海新能源科技有限公司 | Ball bearing |
| CN117759630B (en) * | 2024-02-22 | 2024-04-26 | 上海骋海新能源科技有限公司 | Ball bearing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2000046047A (en) | Selective washer and thrust bearing assembly | |
| JP5394621B2 (en) | Thin plate cage and spherical roller bearing with such cage | |
| JP2003004047A (en) | Ball bearing | |
| JP2010112461A (en) | Rolling bearing cage and rolling bearing | |
| JPWO2012073839A1 (en) | Split type rolling bearing cage | |
| JPH04285333A (en) | Clutch | |
| JP2010002017A (en) | Rolling bearing | |
| JP5272737B2 (en) | Crown type cage and ball bearing | |
| JP2001159432A (en) | End beating for one-way clutch, manufacturing method therefor and one-way clutch | |
| JPH10252728A (en) | Axial direction rotation preventing mechanism for lipped thrust bearing ring | |
| JP2000320558A (en) | Synthetic resin made retainer for roller bearing | |
| JP2003214436A (en) | Holder for ball bearing and ball bearing | |
| JP4424092B2 (en) | Synthetic resin crown cage | |
| JP2006017180A (en) | Crown retainer made of synthetic resin | |
| US3598459A (en) | Retainer ring for roller bearing | |
| JP4147500B2 (en) | Roller bearing cage | |
| JP2542251Y2 (en) | Synthetic resin cage for cylindrical roller bearings | |
| KR101976472B1 (en) | An Angular Contact Ball Bearing | |
| JP2000291663A (en) | Rolling bearing | |
| JPH09177839A (en) | One-way clutch | |
| JPH09158951A (en) | Crown type holder for rolling bearing | |
| JP2007120591A (en) | Cam follower and roller follower | |
| JP3356524B2 (en) | Ball bearing cage | |
| JP2006009816A (en) | Synthetic resin retainer | |
| JP2004100866A (en) | Retainer for self-aligning roller bearing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20060324 |
|
| RD04 | Notification of resignation of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7424 Effective date: 20071127 |