JPH0783226A - Resin molded article incorporated needle roller bearing device - Google Patents
Resin molded article incorporated needle roller bearing deviceInfo
- Publication number
- JPH0783226A JPH0783226A JP25247993A JP25247993A JPH0783226A JP H0783226 A JPH0783226 A JP H0783226A JP 25247993 A JP25247993 A JP 25247993A JP 25247993 A JP25247993 A JP 25247993A JP H0783226 A JPH0783226 A JP H0783226A
- Authority
- JP
- Japan
- Prior art keywords
- needle roller
- roller bearing
- resin molded
- backup ring
- molded article
- 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
- F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
- F16C13/006—Guiding rollers, wheels or the like, formed by or on the outer element of a single bearing or bearing unit, e.g. two adjacent bearings, whose ratio of length to diameter is generally less than one
-
- 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
- F16C19/44—Needle bearings
- F16C19/46—Needle bearings with one row or needles
- F16C19/466—Needle bearings with one row or needles comprising needle rollers and an outer ring, i.e. subunit without inner ring
-
- 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
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
- F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
- F16C35/07—Fixing them on the shaft or housing with interposition of an element
- F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、複写機、レーザプリ
ンタ、ファクシミリ等の事務機器の駆動部等に使用され
る樹脂成形品組込針状ころ軸受装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a needle roller bearing device incorporating a resin molded product used in a drive section of office equipment such as a copying machine, a laser printer and a facsimile.
【0002】[0002]
【従来の技術】従来、複写機、レーザプリンタ、ファク
シミリ等の事務機器駆動部において、玉軸受または滑り
軸受(焼結軸受)に樹脂成形品を組付けたプーリおよび
ギヤ等が使用されている。例えば、普通紙複写機のスキ
ャナ部駆動用ワイヤーに使用する樹脂製ワイヤプーリ、
あるいはアイドラギヤは、玉軸受の外径面に樹脂成形品
を同時成形または圧入することにより製作するか、また
は焼結軸受へ樹脂成形品を圧入することにより製作して
いる。2. Description of the Related Art Conventionally, a pulley and a gear in which a resin molded product is mounted on a ball bearing or a sliding bearing (sintered bearing) are used in a drive unit for office equipment such as a copying machine, a laser printer, and a facsimile. For example, a resin wire pulley used for the scanner drive wire of a plain paper copier,
Alternatively, the idler gear is manufactured by simultaneously molding or press-fitting a resin molded product on the outer diameter surface of the ball bearing, or by press-fitting the resin molded product into a sintered bearing.
【0003】[0003]
【発明が解決しようとする課題】しかし、玉軸受を使用
すると、軸受コストが高いためにその組込み製品のコス
トが高くなる。また、滑り軸受を使用すると、転がり軸
受に比べてトルク面で不利となる。However, when a ball bearing is used, the cost of the embedded product becomes high due to the high bearing cost. Further, the use of the slide bearing has a disadvantage in terms of torque as compared with the rolling bearing.
【0004】このため、転がり軸受として安価に得られ
るシェル型の針状ころ軸受を使用することを考えた。し
かし、この型の軸受は外輪が薄い鋼板の深絞り成形品か
らなるため、軸受単独では精度が得られず、ハウジング
等の内径面に圧入された後、初めて正規の寸法と精度が
得られる。一方、樹脂成形品は高精度に成形することが
難しく、そのため針状ころ軸受にプーリ等となる樹脂成
形品を同時成形し、または圧入しても、外輪の正規の寸
法や精度が得られない。そのため、針状ころの内接円径
の公差のばらつきが大きくなり、軸との隙間範囲が大き
くなって、軸受の角触れや異音の原因となる。このよう
な問題から針状ころ軸受の使用が難しい。Therefore, it has been considered to use a shell type needle roller bearing which is inexpensive and can be obtained as the rolling bearing. However, since the bearing of this type is formed by deep-drawing a steel plate having an outer ring, accuracy cannot be obtained by the bearing alone, and regular dimensions and accuracy are obtained only after the bearing is press-fitted into the inner diameter surface of the housing or the like. On the other hand, it is difficult to mold resin molded products with high accuracy, so even if a resin molded product such as a pulley is simultaneously molded or press-fitted into the needle roller bearing, the proper outer ring dimensions and accuracy cannot be obtained. . For this reason, the tolerance of the inscribed circle diameter of the needle roller varies greatly, and the range of the gap between the needle roller and the shaft increases, which causes angular contact of the bearing and abnormal noise. Due to these problems, it is difficult to use the needle roller bearing.
【0005】この発明の目的は、針状ころと軸との間の
隙間を精度良く管理することができ、低コスト化、低ト
ルク化が図れる樹脂成形品組込針状ころ軸受装置を提供
することである。An object of the present invention is to provide a needle roller bearing device incorporating a resin molded product, which can control the clearance between the needle roller and the shaft with high accuracy, and can achieve cost reduction and torque reduction. That is.
【0006】[0006]
【課題を解決するための手段】この発明の樹脂成形品組
込針状ころ軸受装置は、樹脂成形品に軸受嵌合用のバッ
クアップリングを設け、外輪が深絞り成形品からなる針
状ころ軸受を、前記バックアップリングに圧入したもの
である。A needle roller bearing device incorporating a resin molded product according to the present invention is a needle roller bearing in which a resin molded product is provided with a backup ring for fitting a bearing, and an outer ring is a deep drawing molded product. The backup ring is press-fitted.
【0007】[0007]
【作用】この構成によると、針状ころ軸受の外輪は、バ
ックアップリングに圧入した状態でバックアップリング
の内径面に倣って精度が得られる。一方、バックアップ
リングは、樹脂成形品と別部材の単純な形状の部材であ
るため、加工も容易で、材質の選択も自由にでき、その
ため内径の管理を精度良く行える。したがって、バック
アップリングの内径公差を管理することにより、針状こ
ろの内接円径の公差幅を小さくして軸との間の隙間を精
度良く管理することができる。また、外輪が深絞り成形
品からなる針状ころ軸受を用いるため、玉軸受に比べて
安価に製造でき、かつ滑り軸受に比べて低トルクとな
る。According to this structure, the accuracy of the outer ring of the needle roller bearing can be obtained by following the inner diameter surface of the backup ring in a state of being press-fitted into the backup ring. On the other hand, since the backup ring is a member having a simple shape that is a member different from the resin molded product, it is easy to process and the material can be freely selected, so that the inner diameter can be controlled with high accuracy. Therefore, by controlling the inner diameter tolerance of the backup ring, the tolerance width of the inscribed circle diameter of the needle roller can be reduced and the clearance between the shaft and the shaft can be accurately controlled. Further, since the outer ring uses a needle roller bearing made of a deep-drawing product, it can be manufactured at a lower cost than a ball bearing and has a lower torque than a slide bearing.
【0008】[0008]
【実施例】この発明の一実施例を図1および図2に基づ
いて説明する。この樹脂成形品組込針状ころ軸受装置
は、リング状の樹脂成形品1に軸受嵌合用のバックアッ
プリング2を設け、針状ころ軸受3をバックアップリン
グ2に圧入したものである。針状ころ軸受3は、いわゆ
るシェル型のものであり、内輪は有しておらず、鋼板等
の深絞り成形品からなる外輪4内に、針状ころ5および
保持器6からなる保持器付き針状ころ7を組み込んで構
成される。樹脂成形品1は、プーリ、ギヤ、歯付きプー
リ等となるものであり、図示の例ではワイヤ用プーリと
してある。樹脂成形品1の材質としては、例えばポリア
セタール樹脂が使用される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. In this needle roller bearing device incorporating a resin molded product, a ring-shaped resin molded product 1 is provided with a backup ring 2 for bearing fitting, and the needle roller bearing 3 is press-fitted into the backup ring 2. The needle roller bearing 3 is of a so-called shell type, has no inner ring, and has a cage composed of a needle roller 5 and a cage 6 inside an outer ring 4 made of a deep-drawn product such as a steel plate. The needle roller 7 is incorporated. The resin molded product 1 is a pulley, a gear, a toothed pulley, or the like, and is a wire pulley in the illustrated example. As the material of the resin molded product 1, for example, polyacetal resin is used.
【0009】バックアップリング2の材質は、針状ころ
軸受3の外輪4と同じ材質の鋼材または鉄系の焼結合金
が好ましく、銅系や銅鉄系の焼結合金、その他の金属材
料等が使用できる。バックアップリング2の肉厚は、例
えば内径が10mmのもので、1.5mm以上であることが
望ましい。バックアップリング2は、樹脂成形品1に対
して同時成形(インサート成形)または圧入により固定
する。このように樹脂成形品1を固定したバックアップ
リング2に対して、図2に矢印で示すように針状ころ軸
受3を圧入する。なお、バックアップリング2の外径面
には樹脂成形品1との回り止めおよび抜け止め用のロー
レット加工部等の凹凸部を設けておくことが好ましい。The material of the backup ring 2 is preferably a steel material or an iron-based sintered alloy, which is the same material as the outer ring 4 of the needle roller bearing 3, and a copper-based or copper-iron-based sintered alloy or other metal materials. Can be used. The backup ring 2 has a wall thickness of, for example, 10 mm, and preferably 1.5 mm or more. The backup ring 2 is fixed to the resin molded product 1 by simultaneous molding (insert molding) or press fitting. In this way, the needle roller bearing 3 is press-fitted into the backup ring 2 to which the resin molded product 1 is fixed, as indicated by the arrow in FIG. It should be noted that it is preferable to provide an uneven portion such as a knurled portion for preventing rotation with respect to the resin molded product 1 and slipping-out on the outer diameter surface of the backup ring 2.
【0010】この構成によると、針状ころ軸受3の外輪
4は、バックアップリング2に圧入した状態でバックア
ップリング2の内径面に倣って精度が得られる。一方、
バックアップリング2は、鉄材等からなる単純な形状の
部材であるため、加工も容易で、内径を精度良く仕上げ
ることができる。したがって、バックアップリング2の
内径公差を管理することにより、針状ころ5の配列の内
接円径の公差幅を小さくして軸8との間の隙間を精度良
く管理することができる。そのため、針状ころ軸受3に
おける角振れや異音の発生が防止できる。According to this structure, the outer ring 4 of the needle roller bearing 3 can be obtained by following the inner diameter surface of the backup ring 2 with accuracy while being pressed into the backup ring 2. on the other hand,
Since the backup ring 2 is a member having a simple shape made of an iron material or the like, it is easy to process and the inner diameter can be finished with high precision. Therefore, by controlling the inner diameter tolerance of the backup ring 2, it is possible to reduce the tolerance width of the inscribed circle diameter of the arrangement of the needle rollers 5 and accurately control the clearance between the backup ring 2 and the shaft 8. Therefore, it is possible to prevent angular runout and abnormal noise in the needle roller bearing 3.
【0011】バックアップリング2の材質を針状ころ軸
受3の外輪4と同様な材質とした場合は、熱膨張率も同
程度となるため、バックアップリング2と外輪4との組
み込み後の熱による寸法変化の影響、すなわち嵌め合い
への影響を小さくすることができる。バックアップリン
グ2を鉄系の焼結合金とした場合も同様に熱影響を小さ
くできる。また、シェル型の針状ころ軸受3とバックア
ップリング2とを用いるため、玉軸受に比べて安価に製
造でき、かつ滑り軸受に比べて低トルクとなる。When the material of the backup ring 2 is the same as that of the outer ring 4 of the needle roller bearing 3, the coefficient of thermal expansion is about the same, and therefore, the dimension due to the heat after the backup ring 2 and the outer ring 4 are assembled. The influence of the change, that is, the influence on the fitting can be reduced. Similarly, when the backup ring 2 is made of an iron-based sintered alloy, the thermal effect can be reduced. Moreover, since the shell-type needle roller bearing 3 and the backup ring 2 are used, it can be manufactured at a lower cost than a ball bearing and has a lower torque than a slide bearing.
【0012】[0012]
【発明の効果】この発明の樹脂成形品組込針状ころ軸受
装置は、樹脂成形品に軸受嵌合用のバックアップリング
を設け、シェル型の針状ころ軸受を、前記バックアップ
リングに圧入したものであるため、針状ころの内接円径
の公差幅を小さくして軸との間の隙間を精度良く管理す
ることができ、かつ低トルクで、低コストのものとする
ことができる。The needle roller bearing device with a resin molded product according to the present invention is provided with a resin molded product provided with a backup ring for bearing fitting, and a shell type needle roller bearing is press-fitted into the backup ring. Therefore, it is possible to reduce the tolerance width of the inscribed circle diameter of the needle roller to accurately control the gap between the needle roller and the shaft, and to reduce the torque and the cost.
【図1】この発明の一実施例の断面図である。FIG. 1 is a sectional view of an embodiment of the present invention.
【図2】その組立工程の説明図である。FIG. 2 is an explanatory view of the assembling process.
1…樹脂成形品、2…バックアップリング、3…針状こ
ろ軸受、4…外輪、5…針状ころ、8…軸1 ... Resin molded product, 2 ... Backup ring, 3 ... Needle roller bearing, 4 ... Outer ring, 5 ... Needle roller, 8 ... Shaft
Claims (1)
リングを設け、外輪が深絞り成形品からなる針状ころ軸
受を、前記バックアップリングに圧入した樹脂成形品組
込針状ころ軸受装置。1. A needle roller bearing device incorporating a resin molded product, wherein a resin-molded product is provided with a backup ring for fitting a bearing, and an outer ring is a deep-drawn molded product, and a needle roller bearing is press-fitted into said backup ring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25247993A JPH0783226A (en) | 1993-09-14 | 1993-09-14 | Resin molded article incorporated needle roller bearing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25247993A JPH0783226A (en) | 1993-09-14 | 1993-09-14 | Resin molded article incorporated needle roller bearing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0783226A true JPH0783226A (en) | 1995-03-28 |
Family
ID=17237958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP25247993A Pending JPH0783226A (en) | 1993-09-14 | 1993-09-14 | Resin molded article incorporated needle roller bearing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0783226A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002281724A (en) * | 2001-03-23 | 2002-09-27 | Sony Corp | Motor unit and disc drive |
JP2012197685A (en) * | 2011-03-18 | 2012-10-18 | Denso Corp | Intake valve device |
DE102013212963A1 (en) * | 2013-07-03 | 2015-01-08 | Aktiebolaget Skf | Chain or belt pulley |
CN107327479A (en) * | 2017-06-12 | 2017-11-07 | 中国航发哈尔滨东安发动机有限公司 | A kind of installation method of bearing |
JP2020029957A (en) * | 2018-08-15 | 2020-02-27 | ナブテスコ株式会社 | Bearing holding mechanism |
-
1993
- 1993-09-14 JP JP25247993A patent/JPH0783226A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002281724A (en) * | 2001-03-23 | 2002-09-27 | Sony Corp | Motor unit and disc drive |
JP4655178B2 (en) * | 2001-03-23 | 2011-03-23 | ソニー株式会社 | Motor unit and disk drive device |
JP2012197685A (en) * | 2011-03-18 | 2012-10-18 | Denso Corp | Intake valve device |
DE102013212963A1 (en) * | 2013-07-03 | 2015-01-08 | Aktiebolaget Skf | Chain or belt pulley |
CN107327479A (en) * | 2017-06-12 | 2017-11-07 | 中国航发哈尔滨东安发动机有限公司 | A kind of installation method of bearing |
JP2020029957A (en) * | 2018-08-15 | 2020-02-27 | ナブテスコ株式会社 | Bearing holding mechanism |
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