JPS649498B2 - - Google Patents
Info
- Publication number
- JPS649498B2 JPS649498B2 JP11792883A JP11792883A JPS649498B2 JP S649498 B2 JPS649498 B2 JP S649498B2 JP 11792883 A JP11792883 A JP 11792883A JP 11792883 A JP11792883 A JP 11792883A JP S649498 B2 JPS649498 B2 JP S649498B2
- Authority
- JP
- Japan
- Prior art keywords
- cage
- column
- side plate
- rollers
- synthetic resin
- 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.)
- Expired
Links
- 229920003002 synthetic resin Polymers 0.000 claims description 9
- 239000000057 synthetic resin Substances 0.000 claims description 9
- 239000010687 lubricating oil Substances 0.000 description 4
- 230000013011 mating Effects 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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
- F16C33/46—Cages for rollers or needles
- F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
- F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
- F16C33/4635—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages made from plastic, e.g. injection moulded window 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
- F16C19/22—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
- F16C19/24—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 radial load mainly
- F16C19/26—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 radial load mainly with a single row of rollers
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Description
【発明の詳細な説明】
本発明は円筒ころ軸受用の合成樹脂製保持器に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a synthetic resin cage for a cylindrical roller bearing.
従来の円筒ころ軸受用の合成樹脂製保持器とし
ては、例えば実公昭44−26961号公報に記載のも
のが知られている。 As a conventional synthetic resin retainer for a cylindrical roller bearing, for example, one described in Japanese Utility Model Publication No. 44-26961 is known.
この実公昭44−26961号公報に記載の保持器は、
第１図及び第２図にその構造を示すように、二つ
のリング状側板Ａ，Ｂと該側板Ａ，Ｂを相互に連
結する複数個の保持器柱Ｃとからなり、前記側板
Ａ，Ｂと保持器柱Ｃとで円周等間隔にころ保持窓
を形成してころＤを保持するようにした合成樹脂
製保持器であつて、重ね合わせた成形用金型の上
型部で側板Ａ及び保持器柱Ｃの上半部C1を成形
し、下型部で側板Ｂと前記柱Ｃの下半部C2を成
形するとともに、前記上下金型の合わせ面位置で
側板Ａと柱下半部C2、側板Ｂと柱上半部C1及び
柱上半部C1と柱下半部C2とをそれぞれ一体に結
合するようにして射出成形により形成したもので
ある。 The cage described in this Utility Model Publication No. 44-26961 is
As shown in FIGS. 1 and 2, the structure is composed of two ring-shaped side plates A and B and a plurality of retainer columns C that interconnect the side plates A and B. It is a synthetic resin cage in which roller holding windows are formed at equal intervals around the circumference by a cage column C and a cage column C to hold a roller D, and the side plate A Then, the upper half C1 of the cage column C is molded, and the side plate B and the lower half C2 of the column C are molded in the lower mold part, and the side plate A and the lower part of the column are molded at the mating surface position of the upper and lower molds. The half part C 2 , the side plate B and the column upper half part C 1 and the column upper half part C 1 and the column lower half part C 2 are each formed by injection molding so as to be integrally connected to each other.
ところが前記従来技術には次のような欠点があ
る。 However, the prior art has the following drawbacks.
前記側板Ａと柱下半部C2及び側板Ｂと柱上
半部C1とをそれぞれ一体に結合するようにし
ているため、第３図に矢視Ｋで示すように該結
合部がノツチ状となり、ころＤの転動時に前記
結合部（矢視Ｋ部）に応力集中が生じ、この結
合部から保持器が破断する恐れがある。 Since the side plate A and the lower half of the column C2 and the side plate B and the upper half of the column C1 are respectively integrally connected, the joints have a notch shape as shown by arrow K in FIG. Therefore, when the rollers D roll, stress concentration occurs at the joint portion (point K in the arrow direction), and there is a risk that the cage may break from this joint portion.
前記保持器柱Ｃには、該柱Ｃの上半部C1と
下半部C2との結合部に軸方向にのびる稜線Ｅ
が形成されるが、この稜線Ｅの位置ところＤの
ピツチ円直径とが一致しているためころＤの公
転時に、前記稜線ＥがころＤと常に接触するこ
とになる。 The retainer column C has a ridgeline E extending in the axial direction at the joint between the upper half C1 and the lower half C2 of the column C.
However, since the position of this ridgeline E and the pitch circle diameter of D coincide, the ridgeline E always comes into contact with the roller D when the roller D revolves.
そのため第４図に示すように柱Ｃの結合部に
周方向のズレが生じたとき、ころＤと柱Ｃとの
間の潤滑油膜が稜線Ｅで切れて潤滑不良をきた
すことになる。 Therefore, as shown in FIG. 4, when a deviation occurs in the circumferential direction at the joint of the pillars C, the lubricating oil film between the rollers D and the pillars C breaks at the ridge line E, resulting in poor lubrication.
保持器がころＤの周面の大部分を覆うような
形状となつているため、保持器ところとの間に
潤滑油が浸透しにくく、かつ放熱性に欠ける。 Since the cage is shaped to cover most of the circumferential surface of the rollers D, it is difficult for lubricating oil to penetrate between the cage and the cage, and heat dissipation is poor.
ころＤの脱落を防止している保持器柱Ｃの外
周縁部及び内周縁部がころＤの全長にわたつて
形成されているため、ころを保持器に組み込む
際に挿入しずらく、作業性に欠ける。 The outer and inner edges of the cage pillars C, which prevent the rollers D from falling off, are formed over the entire length of the rollers D, making it difficult to insert the rollers into the cage and improving workability. It lacks.
本発明は上記の従来技術の保持器における欠点
を解消し、潤滑性能、強度及び精度を向上し、し
かもころの組込みを容易とした円筒ころ軸受用の
合成樹脂製保持器を提供することを目的とするも
のである。 An object of the present invention is to provide a synthetic resin cage for cylindrical roller bearings that eliminates the drawbacks of the conventional cages described above, improves lubrication performance, strength and accuracy, and facilitates the assembly of rollers. That is.
以下第５図ないし第８図に示した一実施例に従
い本発明を説明する。 The present invention will be explained below according to an embodiment shown in FIGS. 5 to 8.
保持器は合成樹脂製であつて、二つのリング状
側板２，３と該側板２，３を相互に連結する複数
個の保持器柱１とからなり、該側板２，３と前記
柱１とで円周等間隔にころ保持窓６を形成するよ
うに射出成形により形成している。 The cage is made of synthetic resin and consists of two ring-shaped side plates 2 and 3 and a plurality of cage columns 1 that interconnect the side plates 2 and 3. It is formed by injection molding so that roller holding windows 6 are formed at equal intervals around the circumference.
射出成形は、重ね合わせた成形用金型の上型部
で前記側板２と前記柱１の上半部４とを、該側板
２に前記柱上半部４の一端が連結されるようにし
て成形し、下型部で前記側板３と柱１の下半部５
とを、該側板３に柱下半部５の一端が連結される
ようにして成形し、かつ前記上下金型の合わせ面
位置で前記各柱半部４，５が一体に結合されるよ
うにして成形する。なおこの時前記各柱半部４，
５は、前記各側板２，３とは連結していない軸方
向に開放された側の端面４ａ，５ａが各側板２，
３の内側面２ａ，３ａよりも軸方向内方に位置す
るようにして結合し、該結合部が前記側板２の内
径面２ｂ及び側板３の外径面３ｂにかからないよ
うにしておく。 In the injection molding, the side plate 2 and the upper half 4 of the column 1 are connected to the side plate 2 using the upper mold part of overlapping molds, so that one end of the column upper half 4 is connected to the side plate 2. The side plate 3 and the lower half 5 of the column 1 are molded using the lower mold part.
and one end of the column lower half 5 is connected to the side plate 3, and the column half sections 4 and 5 are integrally joined at the mating surface position of the upper and lower molds. and mold it. At this time, each of the pillar halves 4,
5, the end surfaces 4a, 5a on the axially open side that are not connected to the side plates 2, 3 are connected to the side plates 2, 3.
The connecting portion is positioned axially inwardly than the inner surfaces 2a, 3a of the side plates 2 and 3, so that the bonded portion does not overlap the inner diameter surface 2b of the side plate 2 and the outer diameter surface 3b of the side plate 3.
７は保持器柱１に形成された稜線を表わし、前
記各柱半部４，５を一体に結合する際、型の合わ
せ面に生じるもので、前記各柱半部４，５の結合
部に相当するものである。 Reference numeral 7 represents a ridge line formed on the retainer column 1, which is generated at the mating surface of the mold when the above-mentioned column halves 4 and 5 are joined together, and is a ridge line formed at the joining part of the column half portions 4 and 5. It is equivalent.
なお前記稜線７、すなわち成型用金型の合わせ
面は、金型の着脱を容易にするため、側板２の内
径が側板３の外径より大径となるテーパ状に形成
し、また第７図及び第８図に示すように側板３の
内外径寸法も、前記稜線７ところ９のピツチ円直
径（PCD）とが一致しないよう、内径＜PCD＜
外径の関係となるように定め、前記柱１の下半部
５にころ９のピツチ円直径（PCD）が含まれる
ようにしておく。 Note that the ridge line 7, that is, the mating surface of the molding die, is formed in a tapered shape such that the inner diameter of the side plate 2 is larger than the outer diameter of the side plate 3 in order to facilitate attachment and detachment of the die. As shown in FIG. 8, the inner and outer diameter dimensions of the side plate 3 are also set so that the inner diameter<PCD<
The pitch diameter (PCD) of the rollers 9 is included in the lower half 5 of the column 1.
ころ保持窓６のころ９との円周方向の摺接部１
０の形状は第７図に示すようにころ９よりもやや
大径とした円筒面形状とし、かつ各柱１間の間隔
が該柱１の下半部５の内径側端部間でころ９の直
径とほぼ等しくなるように形成しておく。 Circumferential sliding contact portion 1 of roller holding window 6 with roller 9
0 has a cylindrical surface with a slightly larger diameter than the rollers 9, as shown in FIG. Shape it so that it is approximately equal to the diameter of.
１１は前記柱下半部５の下面部に内径方向に突
出させて形成したリブであつて、該リブ１１，１
１間の間隔がころ９の直径よりわずかに小さくな
るようにして、ころ９を保持器の内周側より押込
んで、該保持器にころ９が組込めるようにし、か
つ組込み後、ころ９の脱落を防止できるようにし
ておく。 Reference numeral 11 denotes a rib formed on the lower surface of the column lower half 5 so as to protrude in the inner diameter direction, and the rib 11,1
The rollers 9 are pushed in from the inner circumferential side of the cage so that the distance between the rollers 1 and 1 is slightly smaller than the diameter of the rollers 9, so that the rollers 9 can be assembled into the cage. Make sure to prevent it from falling off.
本発明は以上の構成であつて、稜線７によつて
上下に区分された保持器柱１の上半部と下半部の
それぞれの軸方向開放側端面４ａ，５ａが側板
２，３の内、外径面２ｂ，３ｂ上にかからないよ
うにして、この側板２，３の内、外径面２ｂ，３
ｂ上に保持器柱１との結合部が存在しないように
したので、側板上に前記柱１との結合部が存在す
ることにより生ずる該結合部での応力集中を未然
に防止することができ、保持器が破断する恐れが
なくなり保持器の強度を向上させることができ
る。 The present invention has the above-mentioned configuration, and the axially open side end surfaces 4a and 5a of the upper and lower halves of the cage column 1, which are divided into upper and lower parts by the ridge line 7, are located inside the side plates 2 and 3. , the inner and outer diameter surfaces 2b, 3 of these side plates 2, 3 so as not to overlap the outer diameter surfaces 2b, 3b.
Since there is no joint with the retainer column 1 on the side plate b, it is possible to prevent stress concentration at the joint that would otherwise be caused by the presence of the joint with the column 1 on the side plate. , there is no fear that the cage will break, and the strength of the cage can be improved.
しかも側板２の内周面側及び側板３の外周面側
が開放されて十分な空間がとれるので、この空間
部から保持器内部へ潤滑油が容易に浸透すること
ができ、潤滑性が一層向上する。 Moreover, since the inner circumferential surface of the side plate 2 and the outer circumferential surface of the side plate 3 are open to provide sufficient space, lubricating oil can easily penetrate into the cage from this space, further improving lubricity. .
また保持器柱１の稜線７の位置ところのピツチ
円直径とをずらせ、ころのピツチ円直径が保持器
柱１の下半部５に含まれるようにしたので、前記
稜線７ところとが接触し該稜線７で潤滑油膜が切
れて潤滑不良が生ずるというようなことも未然に
防止できる。 In addition, the pitch circle diameter at the position of the ridge line 7 of the cage column 1 is shifted so that the pitch circle diameter of the roller is included in the lower half 5 of the cage column 1, so that the pitch circle diameter at the ridge line 7 is not in contact with the roller pitch circle diameter. It is also possible to prevent the lubricating oil film from breaking at the ridge line 7, resulting in poor lubrication.
さらに保持器へのころの組込み作業も、リブ１
１の軸方向長さ及び円周方向厚みを、ころを軽く
押し込む程度で組み込めるように設定しておくこ
とにより、その作業性を向上させることができ
る。 In addition, the work of assembling the rollers into the cage is done using rib 1.
By setting the axial length and circumferential thickness of 1 so that the rollers can be assembled by lightly pushing them in, the workability can be improved.
なお、本発明の保持器は実施例では外輪案内の
保持器とし、第８図に示すように円筒ころ軸受に
組込んだ場合に外輪１２の軌道面で保持器を案内
するようにしているが、さらに外輪１２の一端部
内周に形成した鍔１３の内周面で保持器を案内す
るようにしてもよく、この場合には保持器の案内
精度がさらに向上する。 In the embodiment, the cage of the present invention is an outer ring guided cage, and as shown in FIG. 8, when incorporated into a cylindrical roller bearing, the cage is guided by the raceway surface of the outer ring 12. Furthermore, the cage may be guided by the inner peripheral surface of a collar 13 formed on the inner periphery of one end of the outer ring 12, and in this case, the guide precision of the cage is further improved.
また本発明の保持器は内輪案内の保持器として
もよく、この場合にはころのピツチ円直径が保持
器柱１の上半部４に含まれるようにして形成し、
該保持器を内輪１４の軌道面及び内輪１４の一端
部外周に形成した鍔１５の外周面の両方で案内す
るようにすればよい。 Further, the cage of the present invention may be an inner ring guided cage, in which case it is formed so that the pitch diameter of the rollers is included in the upper half 4 of the cage column 1,
The retainer may be guided by both the raceway surface of the inner ring 14 and the outer peripheral surface of a collar 15 formed on the outer periphery of one end of the inner ring 14.
第１図は従来の円筒ころ軸受用合成樹脂製保持
器を示す縦断面図、第２図はその側面図、第３図
はその斜視図、第４図は第１図の−断面図、
第５図は本発明の円筒ころ軸受用合成樹脂製保持
器を示す縦断面図、第６図はその平面図、第７図
はその側面図、第８図は本発明の保持器を軸受に
組み込んだ状態を示す図である。
１……保持器柱、２，３……側板、４……柱上
半部、４ａ……柱上半部の軸方向開放側端面、５
……柱下半部、５ａ……柱下半部の軸方向開放側
端面、６……ころ保持窓、７……稜線、９……こ
ろ、１１……リブ、１２……外輪、１３……内
輪。
Fig. 1 is a vertical cross-sectional view showing a conventional synthetic resin cage for cylindrical roller bearings, Fig. 2 is a side view thereof, Fig. 3 is a perspective view thereof, Fig. 4 is a cross-sectional view taken from Fig. 1,
Fig. 5 is a longitudinal sectional view showing a synthetic resin cage for cylindrical roller bearings of the present invention, Fig. 6 is a plan view thereof, Fig. 7 is a side view thereof, and Fig. 8 is a cage of the present invention used in a bearing. FIG. 3 is a diagram showing an installed state. DESCRIPTION OF SYMBOLS 1... Cage column, 2, 3... Side plate, 4... Upper half of column, 4a... Axial open side end surface of upper half of column, 5
. . . Lower half of column, 5 a . ...inner circle.
Claims (1)
を有する複数の保持器柱と、該保持器柱の一端に
前記稜線の外径側に位置する如く結合した第１の
リング状側板と、前記保持器柱の他端に前記稜線
の内径側に位置する如く結合した第２のリング状
側板とからなり、前記保持器柱と第１、第２の両
側板とでころ保持窓を形成するようにした円筒こ
ろ軸受用合成樹脂製保持器において、前記保持器
柱の稜線によつて上下に区分された保持器柱の上
半部と下半部のそれぞれの軸方向開放側端面が前
記第１及び第２の側板のそれぞれの内側面より軸
方向内方に位置するようにしたことを特徴とする
円筒ころ軸受用合成樹脂製保持器。1 a plurality of cage columns having ridge lines extending in the axial direction at arbitrary positions in the radial direction; a first ring-shaped side plate connected to one end of the cage columns so as to be located on the outer diameter side of the ridge lines; A second ring-shaped side plate is connected to the other end of the cage column so as to be located on the inner diameter side of the ridge line, and the cage column and the first and second side plates form a roller holding window. In the synthetic resin cage for cylindrical roller bearings, the axial open side end surfaces of the upper and lower halves of the cage column are divided into upper and lower sections by the ridgeline of the cage column. and a synthetic resin cage for a cylindrical roller bearing, characterized in that the cage is located axially inward from the inner surfaces of each of the second side plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11792883A JPS608525A (en) | 1983-06-28 | 1983-06-28 | Synthetic resin retainer for cylindrical roller bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11792883A JPS608525A (en) | 1983-06-28 | 1983-06-28 | Synthetic resin retainer for cylindrical roller bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS608525A JPS608525A (en) | 1985-01-17 |
| JPS649498B2 true JPS649498B2 (en) | 1989-02-17 |
Family
ID=14723666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11792883A Granted JPS608525A (en) | 1983-06-28 | 1983-06-28 | Synthetic resin retainer for cylindrical roller bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS608525A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6265575A (en) * | 1985-09-17 | 1987-03-24 | Sony Corp | Magnetic recorder |
| JP5154986B2 (en) * | 2008-03-21 | 2013-02-27 | Ｎｔｎ株式会社 | Retainer for cylindrical roller bearing |
| JP5360526B2 (en) * | 2008-04-10 | 2013-12-04 | Ｎｔｎ株式会社 | Retainer for cylindrical roller bearing |
| JP2013241959A (en) * | 2012-05-18 | 2013-12-05 | Jtekt Corp | Split cage for rolling bearing |
| JP6307861B2 (en) | 2013-12-05 | 2018-04-11 | 日本精工株式会社 | Resin cage |
-
1983
- 1983-06-28 JP JP11792883A patent/JPS608525A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS608525A (en) | 1985-01-17 |
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