JPS5927541Y2 - Seal structure of single-seal ball bearing retainer - Google Patents
Seal structure of single-seal ball bearing retainerInfo
- Publication number
- JPS5927541Y2 JPS5927541Y2 JP1979019154U JP1915479U JPS5927541Y2 JP S5927541 Y2 JPS5927541 Y2 JP S5927541Y2 JP 1979019154 U JP1979019154 U JP 1979019154U JP 1915479 U JP1915479 U JP 1915479U JP S5927541 Y2 JPS5927541 Y2 JP S5927541Y2
- Authority
- JP
- Japan
- Prior art keywords
- seal
- retainer
- flange
- diameter
- outer diameter
- 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
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
- F16C33/72—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
-
- 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
-
- 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
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Description
【考案の詳細な説明】
本考案は自動車電装品のモーター等に使用される片シー
ル兼用玉軸受リテナーのシール部分の構造改良に関する
ものである。[Detailed Description of the Invention] The present invention relates to an improvement in the structure of a sealing portion of a single-seal ball bearing retainer used in motors of automobile electrical components and the like.
例えば、自動車電装品のスタータモーターは使用時間は
短いが、回転数の高速化や高精度化が進み、玉軸受の採
用が増加すると共に、原価低減化等のために玉軸受によ
って案内されるリテナーに片シール性能を兼用させる傾
向にある。For example, the usage time of starter motors for automobile electrical components is short, but as the speed of rotation increases and precision increases, the use of ball bearings increases, and retainers guided by ball bearings are used to reduce costs. There is a tendency to combine single-sealing performance with
このような片シール兼用玉軸受リテナーの従来例を第１
図に示すと、１は外輪、２は内輪、３はボール、４はナ
イロン等のりテナーである。The first conventional example of such a single-seal ball bearing retainer is
As shown in the figure, 1 is an outer ring, 2 is an inner ring, 3 is a ball, and 4 is a glue tenor such as nylon.
このリテナー４はボール３によって案内される、いわゆ
るボール案内タイプのもので、リテナー４と外輪１との
隙間ｄ１及びリテナー４と内輪２との隙間ｅよりもリテ
ナー４とボール３との隙間Ｃが小さく、この隙間Ｃによ
って案内される構造である。This retainer 4 is of a so-called ball guide type that is guided by balls 3, and the gap C between the retainer 4 and the balls 3 is larger than the gap d1 between the retainer 4 and the outer ring 1 and the gap e between the retainer 4 and the inner ring 2. The structure is small and guided by this gap C.
この種タイプのりテナー４の片シールを確実にするため
には上記各隙間ｄ、ｅとほぼ同程度の大きさのシール部
分隙間ａ、ｂを必要とした。In order to ensure the one-sided sealing of this type of glue tenor 4, sealing partial gaps a and b of approximately the same size as the above-mentioned gaps d and e were required.
即ち、リテナー４と外輪１とのシール部分隙間ａ１及び
リテナー４と内輪１とのシール部分隙間すが隙間ｄ、ｅ
よりも小さい場合、この種リテナ一本体のボール案内隙
間Ｃと干渉し合って、回転動作時にトルクの変動を起す
原因となる。That is, the sealing gap a1 between the retainer 4 and the outer ring 1, and the sealing gap d, e between the retainer 4 and the inner ring 1.
If it is smaller than this, it will interfere with the ball guide gap C of the main body of this type of retainer, causing torque fluctuations during rotational operation.
そこで従来はシール部分隙間ａ、ｂを隙間ｄ ｅ ｅと
ほぼ同、程度になしていた。Therefore, in the past, the seal portion gaps a and b were made to be approximately the same as the gap d e e.
そのためシール部分隙間ａ、ｂを小さくしてシール効果
を高めることが難しく、會たシ−ル部分隙間ａ、ｂは従
来矩形状であるために２ビリンス径路が単純となり、そ
のためにシール性が悪かった。Therefore, it is difficult to improve the sealing effect by reducing the seal gaps a and b, and because the seal gaps a and b are conventionally rectangular, the two-birinse path is simple, which results in poor sealing performance. Ta.
本考案は上記従来の欠点に鑑み、これを改良・除去した
もので、シ・−ル部分隙間ａｅｂを隙間ｄ。In view of the above-mentioned conventional drawbacks, the present invention improves and eliminates them, and changes the seal gap aeb to the gap d.
ｅと同じにすると共に、ラビリンス径路を複雑化してシ
ール効果を高めたシール構体な提供する。To provide a seal structure which is the same as e and has a complicated labyrinth path to enhance the sealing effect.
以下、本考案を第２図を参照して説明する。The present invention will be explained below with reference to FIG.
第２図に於て、ｊは外輪、６は内輪、７はボール、８は
りテナーであり、各隙間ａｅｂ・ｅｔｄｓｅは上記従来
例と同内容である。In FIG. 2, j is an outer ring, 6 is an inner ring, 7 is a ball, and 8 is a beam tenor, and the gaps aeb and etdse are the same as in the above-mentioned conventional example.
捷た９、１０は凹面溝、１１は円弧状溝、１２は円弧状
部である。The bent portions 9 and 10 are concave grooves, 11 is an arcuate groove, and 12 is an arcuate portion.
前記凹面溝９はリテナー８と外輪５との間のシール部分
隙間ａに面する外輪５の内径端部の大径のシール用段部
５１部分に設けたもので、シール部分隙間ａはこの凹面
溝９の中に設けられる。The concave groove 9 is provided in the large-diameter seal step 51 at the inner diameter end of the outer ring 5 facing the seal gap a between the retainer 8 and the outer ring 5. It is provided in the groove 9.
また凹面溝１０はリテナー８と内輪６との間のシール部
分隙間すに面する内輪６の外径端部の小径のシール用段
部６ａ部分に設けたもので、前述同様にシール部分隙ｌ
ｂはこの凹面溝１０の中に設けられる。Further, the concave groove 10 is provided in the small-diameter seal step 6a at the outer diameter end of the inner ring 6 facing the seal gap between the retainer 8 and the inner ring 6.
b is provided in this concave groove 10.
これら各凹溝９，１０はグリース溜りを有する形状に設
けられ、またこれらにより形成されされるシール部分隙
間ａｅｂは隙間ｄｙｅとほぼ同程度の大きさ、即ちボー
ル案内隙間Ｃに干渉しない大きさに設定される。Each of these grooves 9 and 10 is provided in a shape having a grease reservoir, and the seal portion gap aeb formed by these grooves is approximately the same size as the gap dye, that is, the size is such that it does not interfere with the ball guide gap C. Set.
また上記円弧状溝１１はリテナー８と外輪５との隙間ｄ
のグリース突き当り部分に相当するりテナー８の外輪シ
ール溝部分に設ける。Further, the arcuate groove 11 is a gap d between the retainer 8 and the outer ring 5.
It is provided in the outer ring seal groove of the tenor 8, which corresponds to the grease abutting part.
即ち、リテナー８はボール保持部８．を一体にもつ環状
基部８５を有し、この環状基部８ｂから内径及び外径側
に伸び、前記外輪の大径シール用段部５８及び内輪の小
径シール周設部６．Ｌｌこ対応するシールフランジ部８
ｃ ｅ Ｊを備え、前記円弧状溝１１は上記外径側へ
伸びるシールフランジ部８．の内面に形成されている。That is, the retainer 8 is the ball holding part 8. It has an annular base portion 85 integrally having an annular base portion 85 extending from the annular base portion 8b toward the inner and outer diameter sides, and extends from the annular base portion 8b to the large-diameter seal step portion 58 of the outer ring and the small-diameter seal circumferential portion 6 of the inner ring. Seal flange portion 8 corresponding to Ll
c e J, and the arcuate groove 11 extends toward the outer diameter side of the seal flange portion 8 . is formed on the inner surface of.
この円弧状溝１１の形状は、軸受回転時に隙間ｄを通っ
てきたグリースが円弧状溝１１に突き当って軸受内部に
逆流し易い形状にする。The shape of the arcuate groove 11 is such that the grease that has passed through the gap d when the bearing rotates hits the arcuate groove 11 and easily flows back into the bearing.
即ち、軸受回転時に遠心力によるグリースの流動方向が
軸受内部に向くような形状にするもので、これは円弧形
状が最適である。That is, the shape is such that the flow direction of grease due to centrifugal force when the bearing rotates is directed inside the bearing, and an arc shape is optimal for this.
筺た上記円弧状部１２はリテナー８と内輪６との隙間ｅ
のグリース突き当り部分に相当するりテナー８の内輪シ
ール溝部分に設ける。The enclosed arcuate portion 12 is the gap e between the retainer 8 and the inner ring 6.
It is provided in the inner ring seal groove portion of the tenor 8, which corresponds to the grease abutting portion.
即ち、リテナー８の環状基部８ｂから内径側に伸びるシ
ールフランジ部８ｃの内面角部に形成する。That is, it is formed at the inner corner of the seal flange portion 8c extending radially inward from the annular base portion 8b of the retainer 8.
この円弧状部１２も上述同様、軸受回転時に於けるグリ
ースの流動遠心力方向が軸受内部に向くような形状に設
定される。As described above, this arcuate portion 12 is also set in such a shape that the direction of centrifugal force in the flow of grease when the bearing rotates is directed toward the inside of the bearing.
これら円弧状溝１１や円弧状部１２はグリースの流出を
防止すると共に、凹面溝９，１０と共にラビリンス径路
を複雑化してシール効果を高める。These arcuate grooves 11 and arcuate portions 12 prevent grease from flowing out, and together with the concave grooves 9 and 10, complicate the labyrinth path and enhance the sealing effect.
以上説明したように、本考案はボール案内形リテナーの
一端に半径方向内側及び外側に伸びるフランジな一体に
形成させ、このフランジの内外径面を外輪の内径端部の
大径段部及び内輪の外径端部の小径段部に近接させてシ
ールを兼用させた片シール兼用玉軸受リテナーのシール
構体において、外輪の前記大径段部及び内輪の前記小径
段部に該シールフランジの内外径部と対応させて半径方
向に凹入させた凹面溝を夫々形威し、かつ、これら両凹
面溝の半径方向深さを該リテナーの半径方向動き量より
若干深くすると共に該シールフランジの内外径部と両凹
面溝との間に屈曲したラビリンス隙間を形成させ、該シ
ールフランジの内径側延長部内面にリテナーの環状基部
へ滑らかに繋がる円弧状部を形成ヒ さらに、該シール
フランジの外径側延長部内面に円弧状凹溝を形成させた
からボール案内形式のりテナーに一体に形成されたシー
ルフランジの内外径面を上記両凹面溝によって、内輪及
び外輪に対して容易に非接触状態に維持させることがで
き、回転時のトルク変動を小さく抑制できる。As explained above, in the present invention, one end of a ball-guided retainer is integrally formed with a flange extending radially inward and outward, and the inner and outer diameter surfaces of this flange are connected to the large-diameter step at the inner diameter end of the outer ring and the inner ring. In the seal structure of a single-seal ball bearing retainer that doubles as a seal in close proximity to a small-diameter stepped portion of an outer diameter end, the inner and outer diameter portions of the seal flange are attached to the large-diameter stepped portion of the outer ring and the small-diameter stepped portion of the inner ring. The radial depth of both concave grooves is slightly deeper than the amount of radial movement of the retainer, and the inner and outer diameter portions of the seal flange A curved labyrinth gap is formed between the seal flange and both concave grooves, and an arcuate portion that smoothly connects to the annular base of the retainer is formed on the inner surface of the inner diameter extension of the seal flange. Since an arc-shaped concave groove is formed on the inner surface of the bearing, the inner and outer diameter surfaces of the seal flange integrally formed with the ball guide type glue tenor can be easily maintained in a non-contact state with the inner ring and outer ring by the above-mentioned double concave grooves. This allows torque fluctuations during rotation to be suppressed to a small level.
しかも、屈曲したラビリンス隙間によって外部からの塵
埃や異物の侵入を防止することができ、また、シールフ
ランジの内径側内面においては、回転時の遠心力作用に
よって封入グリースかりテナーの環状基部へ滑らかに繋
がる円弧状部に沿って軸受の内方へ押し戻される如く誘
導されて該内径側からのグリース洩れを防止し、さらに
、シール７ランジの外径側内面においては、円弧状凹溝
によりグリースが軸受内方へＵターン状に押し戻される
如く誘導されて該外径側からのグリース洩れを防止させ
ることができ、前記両凹面溝による内外輪への非接触構
造と屈曲したラビリンス隙間並びにシールフランジの内
径側内面の遠心力作用を利用した円弧状部及びシールフ
ランジの外径側内面の円弧状凹溝による異物等の侵入防
止、グリース洩れ防止等に優れたシール構造とが同時に
達成され、この種片シール兼用玉軸受すテナーのシール
構体としてシール性能の向上と非接触設計を容易化でき
る効果がある。In addition, the curved labyrinth gap prevents dust and foreign matter from entering from the outside, and on the inner surface of the seal flange, the centrifugal force during rotation allows the grease to be applied smoothly to the annular base of the tenor. Grease is guided to be pushed back inward of the bearing along the connecting arcuate portions, thereby preventing grease from leaking from the inner diameter side.Furthermore, on the inner surface of the outer diameter side of the seal 7 flange, the arcuate concave grooves allow grease to flow into the bearing. Grease can be guided to be pushed back inward in a U-turn shape to prevent grease from leaking from the outer diameter side, and the non-contact structure for the inner and outer rings due to the double concave grooves, the curved labyrinth gap, and the inner diameter of the seal flange. A sealing structure that is excellent in preventing the intrusion of foreign objects, etc. and preventing grease leakage is achieved at the same time by using the circular arc portion on the side inner surface that utilizes centrifugal force and the circular arc groove on the outer diameter inner surface of the seal flange. As a tenor seal structure with a ball bearing that also serves as a seal, it has the effect of improving sealing performance and facilitating non-contact design.
第１図は従来の片シール兼用玉軸受リテナ一部分の断面
図、第２図は本考案に係るシール構体の実施例を示す断
面図である。
５・・・外輪、６・・・内輪、７・・・ボール、８・・
・リテナ９．１０・・・凹面乳FIG. 1 is a sectional view of a portion of a conventional single-seal ball bearing retainer, and FIG. 2 is a sectional view showing an embodiment of a seal structure according to the present invention. 5...Outer ring, 6...Inner ring, 7...Ball, 8...
・Retainer 9.10...Concave breast
Claims (1)
伸びるフランジを一体に形成させ、このフランジの内外
径面を外輪の内径端部の大径段部及び内輪の外径端部の
小径段部に近接させてシールを兼用させた片シール兼用
玉軸受リテナーのシール構体において、外輪の前記大径
段部及び内輪の前記小径段部に該シールフランジの内外
径部と対応させて半径方向に凹入させた凹面溝を夫々形
成し、かつ、これら両凹面溝の半径方向深さを該リテナ
ーの半径方向動き量より若干深くすると共に該シール７
ランジの内外径部と両凹面溝との間に屈曲したラビリン
ス隙間を形成させ、該シールフランジの内径側延長部内
面にリテナーの環状基部へ滑らかに繋がる円弧状部を形
成し、さらに、該シールフランジの外径側延長部内面に
円弧状凹溝を形成させたことを特徴とする片シール兼用
玉軸受リテナーのシール構体。A flange extending radially inward and outward is integrally formed at one end of the ball guide type retainer, and the inner and outer diameter surfaces of this flange are formed at a large diameter step at the inner diameter end of the outer ring and a small diameter step at the outer diameter end of the inner ring. In the seal structure of a ball bearing retainer that doubles as a single seal in close proximity to each other and serves as a seal, the large-diameter stepped portion of the outer ring and the small-diameter stepped portion of the inner ring are recessed in the radial direction in correspondence with the inner and outer diameter portions of the seal flange. and the radial depth of both concave grooves is slightly deeper than the amount of radial movement of the retainer.
A curved labyrinth gap is formed between the inner and outer diameter portions of the flange and both concave grooves, an arcuate portion that smoothly connects to the annular base of the retainer is formed on the inner surface of the inner extension portion of the seal flange, and further, the seal A seal structure for a ball bearing retainer that also serves as a single seal, characterized in that an arcuate groove is formed on the inner surface of the outer diameter side extension of the flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979019154U JPS5927541Y2 (en) | 1979-02-17 | 1979-02-17 | Seal structure of single-seal ball bearing retainer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1979019154U JPS5927541Y2 (en) | 1979-02-17 | 1979-02-17 | Seal structure of single-seal ball bearing retainer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55119426U JPS55119426U (en) | 1980-08-23 |
| JPS5927541Y2 true JPS5927541Y2 (en) | 1984-08-09 |
Family
ID=28847730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1979019154U Expired JPS5927541Y2 (en) | 1979-02-17 | 1979-02-17 | Seal structure of single-seal ball bearing retainer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5927541Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1404769B1 (en) * | 2010-12-21 | 2013-11-29 | Skf Ab | RESTING BALL CAGE FOR BEARINGS AND RIGID BEARING UNIT |
| JP6144121B2 (en) * | 2013-06-12 | 2017-06-07 | 本田技研工業株式会社 | Bearing and continuously variable transmission |
-
1979
- 1979-02-17 JP JP1979019154U patent/JPS5927541Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55119426U (en) | 1980-08-23 |
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