JPS62124317A - Supporting structure for rolling bearing - Google Patents
Supporting structure for rolling bearingInfo
- Publication number
- JPS62124317A JPS62124317A JP26253185A JP26253185A JPS62124317A JP S62124317 A JPS62124317 A JP S62124317A JP 26253185 A JP26253185 A JP 26253185A JP 26253185 A JP26253185 A JP 26253185A JP S62124317 A JPS62124317 A JP S62124317A
- Authority
- JP
- Japan
- Prior art keywords
- ring
- outer ring
- annular groove
- rolling bearing
- bearing
- 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
- 238000005096 rolling process Methods 0.000 title claims description 14
- 229920001971 elastomer Polymers 0.000 claims abstract description 8
- 239000013013 elastic material Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000000806 elastomer Substances 0.000 abstract 1
- 238000003780 insertion Methods 0.000 description 5
- 230000037431 insertion Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Landscapes
- Support Of The Bearing (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明のｉ゛イ：綱な説明
産業上の利用分野
この発明は、ころがり軸受とその嵌入支持孔との嵌合公
差による隙間のため回転軸が横振れすることを防止する
ころがり軸受支持構造に関する。[Detailed Description of the Invention] 3. I-B of the Invention: Brief Explanation Industrial Application Field This invention is directed to the prevention of sideways vibration of a rotating shaft due to a gap due to the fitting tolerance between a rolling bearing and its fitting support hole. This invention relates to a rolling bearing support structure that prevents.
従来の技術
第５図は２１１ｉ１のころがり軸受１．１にて回転軸２
を軸承する一般的軸承構造を示す。この場合、軸受１の
内輪３と軸２の間及び軸受１の外輪４と軸受支持部材５
の外輪嵌入孔６との間の計４箇所の接触部は、
（１）内輪３又は外輪４の空転による軸２又は外輪嵌入
孔６内面のｆｉｌ（クリープ現象）′を防止する。Conventional technology Figure 5 shows a rotating shaft 2 with a 211i1 rolling bearing 1.1.
This shows a general bearing structure for bearing. In this case, between the inner ring 3 of the bearing 1 and the shaft 2, and between the outer ring 4 of the bearing 1 and the bearing support member 5
A total of four contact portions between the inner ring 3 and the outer ring insertion hole 6 prevent fil (creep phenomenon) on the inner surface of the shaft 2 or the outer ring insertion hole 6 due to idling of the inner ring 3 or outer ring 4.
（２）軸２と内輪３間及び外輪４と孔６内面間の嵌合公
差による隙間によって回転軸２が横振れを起すことを防
止する。(2) The rotating shaft 2 is prevented from causing lateral vibration due to gaps due to fitting tolerances between the shaft 2 and the inner ring 3 and between the outer ring 4 and the inner surface of the hole 6.
等の理由により、前記４箇所の接触部のうち３箇所を接
着や圧入環の手段により固着し、残りの１箇所は、軸２
とこれを結合する回転軸をもつ外部構造物との熱膨張の
差により軸受１に軸方向の過負荷が加わることを防止す
るため、軸方向に自由に動き得る構造とするのが一般的
である。For these reasons, three of the four contact parts are fixed by means of adhesive or press-fit rings, and the remaining one is attached to the shaft 2.
In order to prevent an overload from being applied to the bearing 1 in the axial direction due to the difference in thermal expansion between the bearing 1 and an external structure having a rotating shaft that connects the bearing 1, it is common to have a structure that allows free movement in the axial direction. be.
上記１箇所のころがり軸受１の従来の支持構造としては
、
■単純に僅かの隙間をもたせる。The conventional support structure for the rolling bearing 1 at one location is: (1) Simply providing a slight gap.
■第６図イ２口に示す如く、軸受支持部材５の１箇所又
は複数箇所に外輪４を一定方向に押すばね７を設ける。(2) As shown in FIG. 6A, a spring 7 is provided at one or more locations on the bearing support member 5 to push the outer ring 4 in a certain direction.
■第７図に示すように軸受支持部材５の外輪嵌入孔６内
に環状溝８を形成し、この中にゴム等の弾性材よりなる
Ｏリング９を径方向に伸縮可能に挿入して外輪４を支持
させる。■As shown in Fig. 7, an annular groove 8 is formed in the outer ring insertion hole 6 of the bearing support member 5, and an O-ring 9 made of an elastic material such as rubber is inserted into the groove so that it can expand and contract in the radial direction. Support 4.
等の手段がある。There are other means such as
しかしながら、■の手段は安価ではあるが、軸２に結合
した負荷が円板状物体で遠心力による荷重の方向が不定
である。例えば、磁気ディスクにおけるダイレクトドラ
イブのスピンドルモータの場合は、回転軸が不規則に横
振れし、横振れ量も比較的大であって摩耗を生じ易い。However, although the method (2) is inexpensive, the load connected to the shaft 2 is a disc-shaped object, and the direction of the load due to centrifugal force is uncertain. For example, in the case of a direct drive spindle motor for a magnetic disk, the rotating shaft oscillates irregularly, the amount of lateral oscillation is relatively large, and wear is likely to occur.
また■の手段は回転軸の横振れが少く、ばね７による圧
力が特定の径方向に作用して軸心構振れ方向を一定に保
持し得るが、ばね７を挿入するために支持部材５を加工
することが甚だ面倒である欠点がある。更に■の手段は
基本的には■の手段と同じであり、環状？１４８を偏心
させて加工することは甚だ面倒である欠点がある。In addition, in the method (2), the lateral vibration of the rotating shaft is small, and the pressure by the spring 7 acts in a specific radial direction to maintain the axial center vibration direction constant. It has the disadvantage that it is extremely troublesome to process. Furthermore, the means of ■ is basically the same as the means of ■, and is circular? The disadvantage is that machining 148 eccentrically is extremely troublesome.
発明が解決しようとする問題点
本発明の目的は、ころがり軸受に加わる径方向の偏倚を
特定方向に限定する構造簡易なころがり軸受支持構造を
提供するにある。Problems to be Solved by the Invention An object of the present invention is to provide a simple rolling bearing support structure that limits the radial bias applied to the rolling bearing to a specific direction.
問題点を解決するための手段
本発明は、ころがり軸受の外輪嵌合孔の内面に同心に設
けた環状溝内にゴム等の弾性材よりなるＯリングを挿入
し、０リングに円周方向に偏在する複数の半径方向の突
起を設けるか、又はＯリングの内周面に該内周面に対し
偏心し且つ偏心側内周面に内周面より半径小なる円弧状
突起を設け、これらの突起により外輪に特定径方向の圧
力を加えることを特徴とする。Means for Solving the Problems The present invention involves inserting an O-ring made of an elastic material such as rubber into an annular groove concentrically provided on the inner surface of the outer ring fitting hole of a rolling bearing, and A plurality of unevenly distributed radial protrusions are provided, or an arcuate protrusion is provided on the inner circumferential surface of the O-ring that is eccentric to the inner circumferential surface and has a smaller radius than the inner circumferential surface on the eccentric side inner circumferential surface. The feature is that the projections apply pressure in a specific radial direction to the outer ring.
作 用
０リングは環状溝内において外輪により圧縮された状態
にあり、特に突起の部分が他の部分より強く圧縮される
ので、外輪を突起と反対の径方向へ加圧する。したがっ
て回転軸は常に一側に偏倚されて回転し、軸心が一定偏
倚位置に保持される。Function: The O-ring is in a state of being compressed by the outer ring within the annular groove, and in particular, the protrusion portion is compressed more strongly than other parts, so the outer ring is pressurized in the radial direction opposite to the protrusion. Therefore, the rotating shaft always rotates while being biased to one side, and the shaft center is maintained at a constant biased position.
実 施 例
第１図において第７図と同符号のものは同一構成部分を
示す。軸受支持部材５の外輪嵌入孔６の内面に、環状溝
１０を同心状に設け、この中にゴム等の弾性材よりなる
Ｏリング１１を挿入して外輪４に圧接させる。Embodiment In FIG. 1, the same reference numerals as in FIG. 7 indicate the same components. An annular groove 10 is concentrically provided on the inner surface of the outer ring insertion hole 6 of the bearing support member 5, and an O-ring 11 made of an elastic material such as rubber is inserted into the groove and pressed against the outer ring 4.
第２図ないし第４図はＯリング１１の各種実施例を示し
、第２図の０リングｌｌａは一様断面の０リングに円周
方向に偏在する２個の突起１２を径方向内方へ突設して
なり、Ｏリング１１ａは外周面が環状溝１０の内面に圧
接した状態で半径方向に伸縮することができる。したが
って、０リングｌｌａは２個の突起１２の部分が外輪４
により強く圧縮されて外輪４を２ｔ［！ｌの突起１２の
中間の径方向に加圧する。Figures 2 to 4 show various embodiments of the O-ring 11, and the O-ring lla in Figure 2 has two protrusions 12 unevenly distributed in the circumferential direction on the O-ring with a uniform cross section. The O-ring 11a is provided in a protruding manner, and the O-ring 11a can expand and contract in the radial direction while its outer peripheral surface is in pressure contact with the inner surface of the annular groove 10. Therefore, in the O-ring lla, the two protrusions 12 are connected to the outer ring 4.
The outer ring 4 is compressed more strongly by 2 tons [! Pressure is applied in the radial direction in the middle of the protrusion 12 of l.
第３図に示すＯリングｌｌｂは第２図における突起と同
様の突起１３を半径方向外方へ突設したもので、突起１
３が環状溝１０の内面に圧接して外輪４を両突起１３の
中間の径方向に加圧する。The O-ring llb shown in FIG. 3 has a protrusion 13 similar to the protrusion in FIG. 2 protruding outward in the radial direction.
3 comes into pressure contact with the inner surface of the annular groove 10 and presses the outer ring 4 in the radial direction between the two protrusions 13.
第４図に示す０リングｌｌｃは内周面１４に該内周面に
対し偏心し且つ偏心側内周面に内周面１４より半径小な
る円弧状突起１５を設けたもので、少くも突起１５の両
端ａ点が中心部す点よりも中心０点に近くなるよう、偏
心量と突起１５の半径とを定める。しかるとき、０リン
グＩＩＧが環状溝ＩＯ内で外輪４により圧縮されたとき
の圧縮量はａ点が最大、ｂ点が最小となるから、突起１
５により外輪４に加わる全合成力は突起１５の中心を通
る半径方向となり、外輪４を該方向に加圧する。The O-ring LLC shown in FIG. 4 is provided with an arcuate protrusion 15 on the inner circumferential surface 14 which is eccentric with respect to the inner circumferential surface and whose radius is smaller than that of the inner circumferential surface 14 on the eccentric side inner circumferential surface. The amount of eccentricity and the radius of the protrusion 15 are determined so that points a at both ends of the protrusion 15 are closer to the center point 0 than the center point. In this case, when the O-ring IIG is compressed by the outer ring 4 in the annular groove IO, the compression amount is maximum at point a and minimum at point b, so that the protrusion 1
5, the total resultant force applied to the outer ring 4 is in the radial direction passing through the center of the protrusion 15, and presses the outer ring 4 in that direction.
上記各実施例に示されたＯリング１１はいずれも外輪４
を一定方向に加圧して、該方向における外輪４と外輪嵌
入孔６の内面とを密接状態に保持し、回転軸２の横振れ
を防止する。The O-ring 11 shown in each of the above embodiments has an outer ring 4.
is pressurized in a certain direction to maintain the outer ring 4 and the inner surface of the outer ring insertion hole 6 in close contact with each other in that direction, thereby preventing the rotating shaft 2 from wobbling laterally.
発明の効果
本発明は上記構成を有し、ゴム等の弾性材よりなるＯリ
ングに突起を設けるという極めて簡易な手段により回転
軸の横振れを防止し、該Ｏリングを挿入する環状溝を外
輪嵌合孔と同心に形成し得るから環状溝の加工が容易で
高精度に且つ安価に形成し得る効果がある。Effects of the Invention The present invention has the above-mentioned configuration, and prevents lateral vibration of the rotating shaft by an extremely simple means of providing a protrusion on an O-ring made of an elastic material such as rubber. Since the annular groove can be formed concentrically with the fitting hole, it is easy to process the annular groove, and the annular groove can be formed with high precision and at low cost.
第１図は本発明の一実施例の要部縦断面図、第２図、第
３図、第４図はＯＩＪソング各種実施例の立面図、第５
図は２箇のころがり軸受を用いた回転軸の一般的軸承構
造を示す縦断面図、第６図イ１口はころがり軸受の外輪
に対する従来の支持構造を示す夫々側面図及び縦断面図
、第７図は同じ〈従来の別の支持構造を示す縦断面図で
ある。
■・・・ころがり軸受 ４・・・外輪６・・・
外輪嵌合孔 １０・・・環状溝Ｌｅａ、ｌｌ
ｂ、ｔｉｃ−＝Ｏリング
１２．１３．１５・・・突起 １４・・・内周面代
理人 弁護士 弁理士 木下部平 外２名第５図
コ
第６図
（イ） （ロ）第１図
第２図
〜１
第７図FIG. 1 is a vertical cross-sectional view of a main part of an embodiment of the present invention, FIGS. 2, 3, and 4 are elevational views of various embodiments of OIJ songs, and FIG.
The figure is a vertical cross-sectional view showing a general bearing structure for a rotating shaft using two rolling bearings, FIG. FIG. 7 is a longitudinal sectional view showing another conventional support structure. ■...Rolling bearing 4...Outer ring 6...
Outer ring fitting hole 10... annular groove Lea, ll
b, tic-=O-ring 12.13.15...Protrusion 14...Inner circumferential surface Agent Attorney Patent attorney Taira Kinoshita 2 people Fig. 5 C Fig. 6 (A) (B) Fig. 1
Figures 2-1 Figure 7
Claims (2)
環状溝内にゴム等の弾性材よりなるＯリングを挿入し、
Ｏリングに円周方向に偏在する複数の半径方向の突起を
設け、該突起により外輪に特定径方向の圧力を加えるこ
とを特徴とするころがり軸受支持構造。(1) Insert an O-ring made of an elastic material such as rubber into an annular groove concentrically provided on the inner surface of the outer ring fitting hole of the rolling bearing,
A rolling bearing support structure characterized in that an O-ring is provided with a plurality of radial protrusions unevenly distributed in the circumferential direction, and the protrusions apply pressure in a specific radial direction to an outer ring.
環状溝内にゴム等の弾性材よりなるＯリングを挿入し、
Ｏリングの内周面に該内周面に対し偏心し且つ偏心側内
周面に内周面より半径小なる円弧状突起を設け、該突起
により外輪に特定径方向の圧力を加えることを特徴とす
るころがり軸受支持構造。(2) Insert an O-ring made of an elastic material such as rubber into an annular groove concentrically provided on the inner surface of the outer ring fitting hole of the rolling bearing;
A feature is that an arcuate projection is provided on the inner peripheral surface of the O-ring that is eccentric to the inner peripheral surface and has a smaller radius than the inner peripheral surface on the eccentric side inner peripheral surface, and the projection applies pressure in a specific radial direction to the outer ring. Rolling bearing support structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26253185A JPS62124317A (en) | 1985-11-25 | 1985-11-25 | Supporting structure for rolling bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26253185A JPS62124317A (en) | 1985-11-25 | 1985-11-25 | Supporting structure for rolling bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62124317A true JPS62124317A (en) | 1987-06-05 |
Family
ID=17377088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26253185A Pending JPS62124317A (en) | 1985-11-25 | 1985-11-25 | Supporting structure for rolling bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62124317A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4898481A (en) * | 1987-04-13 | 1990-02-06 | Skf (Uk) Limited | Bearing assembly |
| JPH0560526U (en) * | 1992-01-29 | 1993-08-10 | ダイセル化学工業株式会社 | Rotational force transmission mechanism |
| JP2006009970A (en) * | 2004-06-25 | 2006-01-12 | Kyocera Mita Corp | Bearing device and fixing device for image forming apparatus using the same |
| US7281854B2 (en) | 2002-10-24 | 2007-10-16 | Taiho Kogyo Co., Ltd. | Oil-feeding device for an engine crankshaft |
| JP2009024623A (en) * | 2007-07-20 | 2009-02-05 | Daikyo Nishikawa Kk | Oil strainer |
| US8186676B2 (en) * | 2008-10-09 | 2012-05-29 | Xerox Corporation | Apparatus and method for reducing vibration and noise in a printer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56116920A (en) * | 1980-02-18 | 1981-09-14 | Mitsubishi Electric Corp | Elastic material for ball bearing |
-
1985
- 1985-11-25 JP JP26253185A patent/JPS62124317A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56116920A (en) * | 1980-02-18 | 1981-09-14 | Mitsubishi Electric Corp | Elastic material for ball bearing |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4898481A (en) * | 1987-04-13 | 1990-02-06 | Skf (Uk) Limited | Bearing assembly |
| JPH0560526U (en) * | 1992-01-29 | 1993-08-10 | ダイセル化学工業株式会社 | Rotational force transmission mechanism |
| US7281854B2 (en) | 2002-10-24 | 2007-10-16 | Taiho Kogyo Co., Ltd. | Oil-feeding device for an engine crankshaft |
| JP2006009970A (en) * | 2004-06-25 | 2006-01-12 | Kyocera Mita Corp | Bearing device and fixing device for image forming apparatus using the same |
| JP4548825B2 (en) * | 2004-06-25 | 2010-09-22 | 京セラミタ株式会社 | Fixing device in image forming apparatus |
| JP2009024623A (en) * | 2007-07-20 | 2009-02-05 | Daikyo Nishikawa Kk | Oil strainer |
| US8186676B2 (en) * | 2008-10-09 | 2012-05-29 | Xerox Corporation | Apparatus and method for reducing vibration and noise in a printer |
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