JPH01158218A - Bearing device - Google Patents
Bearing deviceInfo
- Publication number
- JPH01158218A JPH01158218A JP62318111A JP31811187A JPH01158218A JP H01158218 A JPH01158218 A JP H01158218A JP 62318111 A JP62318111 A JP 62318111A JP 31811187 A JP31811187 A JP 31811187A JP H01158218 A JPH01158218 A JP H01158218A
- Authority
- JP
- Japan
- Prior art keywords
- bearing device
- thrust bearing
- resin
- molecular weight
- shaft
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 8
- 239000011347 resin Substances 0.000 claims abstract description 8
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 4
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 239000004952 Polyamide Substances 0.000 claims description 2
- 239000004973 liquid crystal related substance Substances 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- -1 polyethylene terephthalate Polymers 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 239000004705 High-molecular-weight polyethylene Substances 0.000 abstract 2
- 239000000919 ceramic Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 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
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
- F16C17/08—Sliding-contact bearings for exclusively rotary movement for axial load only for supporting the end face of a shaft or other member, e.g. footstep bearings
-
- 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
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/201—Composition of the plastic
-
- 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
- F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
- F16C2208/02—Plastics; Synthetic resins, e.g. rubbers comprising fillers, fibres
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、例えばコンパクトディスクプレーヤーやビデ
オディスクプレーヤー等のディスク駆動源に用いられる
小型モータの軸受装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a bearing device for a small motor used in a disc drive source of, for example, a compact disc player or a video disc player.
従来の技術
近年、ディスク駆動用モータにおいてピックアップとデ
ィスク間距離の精度が重要であるため、スラスト軸受、
あるいはシャフトの摩耗による出力軸しずみに対して厳
しい要求がある。 ゛以下、図面を参照しながら
上述した軸受装置について説明する。Conventional technology In recent years, thrust bearings,
Alternatively, there are strict requirements for output shaft distortion due to shaft wear.゛Hereinafter, the above-mentioned bearing device will be explained with reference to the drawings.
図は軸受装置を説明するモータの断面図である。The figure is a sectional view of a motor explaining the bearing device.
図において、３は先端を半球面状に形成したシャフトで
、フレーム５に設けたスリーブ軸受６にて回転自在に支
持され七いる。このシャフト３には、プラスチック成形
材７により一体成形された複数個の電機子巻線８と整流
子９が取り付けられて回転子を構成している。１０は電
機子巻線８に対向してフレーム５に固着されたマグネッ
ト、１１は電機子巻線８を介してマグネット１ｏに対向
するヨーク、１２は整流子９に摺動する刷子、４はフレ
ーム５の端部開口を覆うブラケットで、内底部の中央に
はシャフト３の先端を受けるスラスト軸受１が装備され
、摺動摩擦軽減のため潤滑剤２が塗布されている。In the figure, reference numeral 3 denotes a shaft having a hemispherical tip, which is rotatably supported by a sleeve bearing 6 provided on a frame 5. A plurality of armature windings 8 and a commutator 9 integrally molded from a plastic molded material 7 are attached to the shaft 3 to constitute a rotor. 10 is a magnet fixed to the frame 5 facing the armature winding 8; 11 is a yoke facing the magnet 1o via the armature winding 8; 12 is a brush sliding on the commutator 9; 4 is a frame A thrust bearing 1 for receiving the tip of the shaft 3 is installed at the center of the inner bottom, and a lubricant 2 is applied to reduce sliding friction.
以上の様に構成された軸受装置について、以下その動作
を説明する。The operation of the bearing device configured as described above will be explained below.
シャフト３は、スリーブ軸受６で支持されて回転すると
き、スラスト方向の荷重をスラスト軸受１で受ける構造
になっている。スラスト軸受の材質としては、通常セラ
ミックや樹脂が用いられている。When the shaft 3 is supported by the sleeve bearing 6 and rotates, the thrust bearing 1 receives a load in the thrust direction. Ceramic or resin is usually used as the material for the thrust bearing.
発明が解決しようとする問題点
しかしながら上記のような構成、例えばセラミツ゛り製
のスラスト軸受で構成した場合、鋼製のシャフトが摩耗
したり、衝撃によりスラスト軸受が割れるなどの不都合
が生じる。割れ対策として、セラミック製スラスト軸受
の厚みを増すことにより解決できるが、軽薄短小のニー
ズに相反するものとなる。Problems to be Solved by the Invention However, when the above structure is used, for example, a thrust bearing made of ceramic, problems arise such as the steel shaft being worn out and the thrust bearing cracking due to impact. As a countermeasure against cracking, increasing the thickness of the ceramic thrust bearing would solve the problem, but this would conflict with the need for lighter, thinner, shorter and smaller bearings.
本発明は、上記問題点に鑑み、小型モータのシャフトと
スラスト軸受の摺動摩擦による摩耗軽減をはかることの
できる軸受装置を提供するらのである。In view of the above-mentioned problems, the present invention provides a bearing device that can reduce wear caused by sliding friction between the shaft of a small motor and a thrust bearing.
問題点を解決するための手段
上記問題点を解決するために本発明のスラスト軸受は、
熱可塑性樹脂に超高分子量ポリエチレンを５〜２０％２
球状カーボン粉末を０〜２０％配合した樹脂により構成
したものである。Means for Solving the Problems In order to solve the above problems, the thrust bearing of the present invention has the following features:
5-20% ultra-high molecular weight polyethylene in thermoplastic resin2
It is made of a resin containing 0 to 20% of spherical carbon powder.
作用
この構成によって、熱可塑性樹脂の中に分散された超高
分子量ポリエチレンや、球状カーボン粉末が潤滑剤とし
て作用し、シャフトもスラスト軸受も互いに摩耗するこ
となく、モータの長寿命化がはかれる。Function: With this configuration, the ultra-high molecular weight polyethylene dispersed in the thermoplastic resin and the spherical carbon powder act as a lubricant, and the shaft and thrust bearing do not wear against each other, thereby extending the life of the motor.
実施例
以下、本発明の一実施例について図面を参照しながら説
明する。EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.
本発明は図におけるスラスト軸受１の材質を、熱可塑性
樹脂に分子ｆｆｉ（ＭＷ）が２００万〜５００万の超高
分子量ボ」フェナレンを５〜２０％２球状カーボン粉末
を０〜２０％配合した樹脂にしたものである。In the present invention, the material of the thrust bearing 1 shown in the figure is a thermoplastic resin mixed with 5 to 20% of ultra-high molecular weight polyphenalene with a molecular ffi (MW) of 2 million to 5 million, 2 0 to 20% of spherical carbon powder. It is made of resin.
なお、熱可塑性樹脂としては、ポリエチレンテレフタレ
ート、ポリアミド、液晶ポリエステル（例えば商品名：
ベクトラ、ロッドラン等）を用いる。In addition, examples of thermoplastic resins include polyethylene terephthalate, polyamide, and liquid crystal polyester (for example, product name:
Vectra, Rodran, etc.).
また、球状カーボン粉末は粒径１μ−〜５０μ−のもの
を用いる。さらにスラスト軸受１としての樹脂板のスラ
スト方向の厚みは１００μ−〜１０００μｍに形成して
いる。Further, the spherical carbon powder used has a particle size of 1 μm to 50 μm. Further, the thickness of the resin plate serving as the thrust bearing 1 in the thrust direction is set to 100 to 1000 μm.
発明の効果
以上のように本発明（よ、スラスト軸受に用いる熱可塑
性樹脂に超高分子量ポリエチレンを５〜２０％２球状カ
ーボンを０〜２０％配合することによりシャフトとスラ
スト軸受間の潤滑剤として作用するため、シャフトもス
ラスト軸受も互いに摩耗することなく、モータの長寿命
化がはかれる。Effects of the Invention As described above, the present invention (by adding 5 to 20% ultra-high molecular weight polyethylene to the thermoplastic resin used for the thrust bearing and 0 to 20% spherical carbon) can be used as a lubricant between the shaft and the thrust bearing. As a result, neither the shaft nor the thrust bearing wear out against each other, extending the life of the motor.
下表にその結果の一例を示す。An example of the results is shown in the table below.
このとき用いた球状カーボン粉末は、粒径１０μｍ、焼
成温度２８００℃のものが特に良好であった。The spherical carbon powder used at this time had a particle size of 10 μm and a firing temperature of 2800° C., which was particularly good.
図はスラスト軸受を有するモータの断面図である。
ｌ・・・・・・スラスト軸受、２・・・・・・潤滑剤、
３・・・・・・シャフト。
代理人の氏名 弁理士 中尾敏男 ほか１名１−一一ス
ラス「ψ由央The figure is a sectional view of a motor with a thrust bearing. l... Thrust bearing, 2... Lubricant,
3...Shaft. Name of agent: Patent attorney Toshio Nakao and one other person 1-11 Slus “ψ Yuo
Claims (6)
０万の超高分子量ポリエチレンを５〜２０％、球状カー
ボン粉末を０〜２０％配合した樹脂でシャフトのスラス
ト軸受を構成した軸受装置。(1) Thermoplastic resin has a molecular weight (MW) of 2 million to 50
A bearing device in which the shaft thrust bearing is made of a resin containing 5 to 20% ultra-high molecular weight polyethylene and 0 to 20% spherical carbon powder.
である特許請求の範囲第１項記載の軸受装置。(2) The bearing device according to claim 1, wherein the thermoplastic resin is polyethylene terephthalate.
請求の範囲第１項記載の軸受装置。(3) The bearing device according to claim 1, wherein the thermoplastic resin is liquid crystal polyester.
範囲第１項記載の軸受装置。(4) The bearing device according to claim 1, wherein the thermoplastic resin is polyamide.
ある特許請求の範囲第１項記載の軸受装置。(5) The bearing device according to claim 1, wherein the spherical carbon powder has a particle size of 1 μm to 50 μm.
μｍ〜１０００μｍである特許請求の範囲第１項記載の
軸受装置。(6) The thickness of the thrust bearing in the thrust direction is 100
The bearing device according to claim 1, wherein the bearing device has a diameter of μm to 1000 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62318111A JPH01158218A (en) | 1987-12-16 | 1987-12-16 | Bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62318111A JPH01158218A (en) | 1987-12-16 | 1987-12-16 | Bearing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01158218A true JPH01158218A (en) | 1989-06-21 |
Family
ID=18095613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62318111A Pending JPH01158218A (en) | 1987-12-16 | 1987-12-16 | Bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01158218A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006062115A1 (en) * | 2004-12-07 | 2006-06-15 | Jtekt Corporation | Retainer for ball bearing and ball bearing using the same |
| US11415170B2 (en) * | 2018-07-27 | 2022-08-16 | Ohio University | Hydrodynamic thrust bearing pad having a variable taper, and related systems and methods |
-
1987
- 1987-12-16 JP JP62318111A patent/JPH01158218A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006062115A1 (en) * | 2004-12-07 | 2006-06-15 | Jtekt Corporation | Retainer for ball bearing and ball bearing using the same |
| JPWO2006062115A1 (en) * | 2004-12-07 | 2008-06-12 | 株式会社ジェイテクト | Ball bearing cage and ball bearing using the same |
| US7766553B2 (en) | 2004-12-07 | 2010-08-03 | Jtekt Corporation | Ball bearing retainer, and ball bearing employing the same |
| JP4863077B2 (en) * | 2004-12-07 | 2012-01-25 | 株式会社ジェイテクト | Ball bearing cage and ball bearing using the same |
| US11415170B2 (en) * | 2018-07-27 | 2022-08-16 | Ohio University | Hydrodynamic thrust bearing pad having a variable taper, and related systems and methods |
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