JPH05202939A - Ceramics bearing - Google Patents
Ceramics bearingInfo
- Publication number
- JPH05202939A JPH05202939A JP1472892A JP1472892A JPH05202939A JP H05202939 A JPH05202939 A JP H05202939A JP 1472892 A JP1472892 A JP 1472892A JP 1472892 A JP1472892 A JP 1472892A JP H05202939 A JPH05202939 A JP H05202939A
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- ceramic
- segment
- ceramics bearing
- ceramics
- 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
Landscapes
- Sliding-Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はセラミックス材で構成さ
れた軸受部材を有するセラミックス軸受に係り、特に水
中で使用されて好適な大径のセラミックス軸受に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceramic bearing having a bearing member made of a ceramic material, and more particularly to a large diameter ceramic bearing suitable for use in water.
【０００２】[0002]
【従来の技術】セラミックス軸受は、円筒リング摺動部
材を金属シェルに焼嵌めし緩衝材で支持しているが一般
的である。2. Description of the Related Art Generally, a ceramic bearing has a cylindrical ring sliding member shrink-fitted to a metal shell and supported by a cushioning material.
【０００３】この時、大径のセラミックス軸受では、セ
ラミックスで一体型の円筒リング摺動部材を製作するの
は困難であった。At this time, it was difficult to manufacture an integral type cylindrical ring sliding member of ceramics with a large diameter ceramics bearing.
【０００４】この問題を解決するため、例えば、特公昭
６３−４９０８７号公報に記載のものように、セラミッ
クス摺動材をセグメント状にし、金属シェルに環状配置
したものが知られている。In order to solve this problem, for example, as disclosed in Japanese Patent Publication No. 63-49087, there is known a ceramic sliding member which is segmented and annularly arranged on a metal shell.
【０００５】[0005]
【発明が解決しようとする課題】上記従来技術における
セラミックス軸受装置は、セラミックス摺動材をセグメ
ント状とし、金属シェルに環状配置しているため、大径
セラミックス軸受の製作は容易になったが、セグメント
形状が円柱のものでは、水膜が期待できないし、長方形
や台形の形状では、周方向端部にかかる集中荷重により
ピッチング摩耗や破損の心配があった。In the above-mentioned ceramic bearing device of the prior art, since the ceramic sliding member is segmented and annularly arranged in the metal shell, it is easy to manufacture a large diameter ceramic bearing. If the segment has a cylindrical shape, a water film cannot be expected, and if it has a rectangular or trapezoidal shape, there is a risk of pitting wear or damage due to the concentrated load applied to the end in the circumferential direction.
【０００６】また、金属シェル内径とセグメント片外形
が製作上の公差ですきまが生じるため、セグメント片端
部に荷重がかかると集中荷重が生じやすかった。Further, since the inner diameter of the metal shell and the outer shape of the segment piece have a clearance due to manufacturing tolerance, if a load is applied to one end of the segment, concentrated load is likely to occur.
【０００７】本発明は上述の不具合を解消するため、周
方向端部に集中荷重を受けにくくかつ水膜の生じやすい
セラミックスすべり軸受を得ることを目的とするもので
ある。In order to solve the above problems, it is an object of the present invention to obtain a ceramics slide bearing which is less likely to receive a concentrated load at the circumferential end portion and tends to form a water film.
【０００８】[0008]
【課題を解決するための手段】上記の目的を達成するた
め、本発明は、セラミックス摺動材のセグメント片の周
方向端部にテーパを設けたことを特徴とするものであ
る。In order to achieve the above object, the present invention is characterized in that a taper is provided at an end portion in the circumferential direction of a segment piece of a ceramic sliding member.
【０００９】[0009]
【作用】荷重がセグメント片にかかる際、周方向端部が
テーパーになっているので、セグメント片の中央付近に
荷重がかかり、チッピング摩耗や破損を防止できる。When the load is applied to the segment piece, the end portions in the circumferential direction are tapered, so that the load is applied to the vicinity of the center of the segment piece and chipping wear and damage can be prevented.
【００１０】また、セラミックス摺動材のセグメント片
の周方向端部をテーパーにしたので、軸が回転すると周
囲からの水の巻き込みによる水膜が形成される。Further, since the circumferential ends of the segment pieces of the ceramic sliding material are tapered, when the shaft rotates, a water film is formed due to the inclusion of water from the surroundings.
【００１１】[0011]
【実施例】以下本発明の一実施例を図１〜図３により説
明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
【００１２】図１は、本発明のセラミックス軸受の縦断
面図、図２はＡ−Ａ断面図、図３は図２のＢ方向矢視図
である。FIG. 1 is a vertical sectional view of a ceramic bearing of the present invention, FIG. 2 is a sectional view taken along line AA, and FIG. 3 is a view taken in the direction of arrow B in FIG.
【００１３】図において、１は回転軸であり、２は回転
軸に取付られた超硬焼結体または超硬被覆スリーブで、
スペーサ３により適正位置に固定されている。４はセラ
ミックス焼結体またはセラミックスで被覆された軸受
で、図２に示すようにセグメント状に分割されている。
セラミックスセグメント片４は、金属シェル５に環状配
置され接着剤で固定されている。また、金属シェル５と
ベアリングハウジング７の間には、緩衝材のゴム６が設
けられている。In the drawing, 1 is a rotary shaft, 2 is a cemented carbide sintered body or a cemented carbide sleeve attached to the rotary shaft,
It is fixed at a proper position by the spacer 3. Reference numeral 4 denotes a bearing which is coated with a ceramic sintered body or ceramics, and is divided into segments as shown in FIG.
The ceramic segment pieces 4 are annularly arranged on the metal shell 5 and fixed with an adhesive. Further, a cushioning rubber 6 is provided between the metal shell 5 and the bearing housing 7.
【００１４】図３に示すようにセラミックスセグメント
片４には、周方向端部にテーパーが形成されており、テ
ーパーと軸受円弧の交点にはＲが形成されている。As shown in FIG. 3, the ceramic segment piece 4 has a taper formed at the end in the circumferential direction, and an R is formed at the intersection of the taper and the bearing arc.
【００１５】回転軸１が回転すると、セラミックス軸受
４と超硬スリーブ２の間には、セラミックス軸受４のテ
ーパー部から巻込まれた水により水膜が形成され良好な
摺動特性が得られる。また、軸受荷重は、従来はセグメ
ント端部付近に集中的にかかりやすかったのに対し、本
発明ではセグメント中央付近に近くなるため破損しにく
くなる。When the rotary shaft 1 rotates, a water film is formed between the ceramic bearing 4 and the cemented carbide sleeve 2 by the water caught from the tapered portion of the ceramic bearing 4, and good sliding characteristics are obtained. In the past, the bearing load was likely to be concentrated near the end of the segment, but in the present invention, the bearing load is near the center of the segment, so that the bearing is less likely to be damaged.
【００１６】また、本発明によれば、信頼性の高い大径
セラミックス軸受を安価に製作できるという効果もあ
る。Further, according to the present invention, there is also an effect that a highly reliable large diameter ceramic bearing can be manufactured at low cost.
【００１７】[0017]
【発明の効果】以上述べたように、本発明では、セラミ
ックス軸受をセグメント状に分割し、そのセグメント片
の周方向端部にテーバーを設けたので、以下の効果があ
得られる。As described above, according to the present invention, the ceramic bearing is divided into segments and the tabs are provided at the circumferential ends of the segment pieces. Therefore, the following effects can be obtained.
【００１８】（１）回転軸の回転により周囲から水を巻
込み水膜を形成しやすくなり、良好な摺動特性を得るこ
とができる。(1) The rotation of the rotating shaft makes it easier for water to be drawn in from the surroundings to form a water film, and good sliding characteristics can be obtained.
【００１９】（２）軸受荷重がセグメント端部にかから
ず中央付近にかかるので、セラミックス軸受のセグメン
ト片がチッピング摩耗したり、破損するのを防止するこ
とができる。(2) Since the bearing load is not applied to the ends of the segments and is applied to the vicinity of the center, it is possible to prevent the segment pieces of the ceramic bearing from chipping wear or damage.
【図１】本発明のセラミックス軸受の縦断面図である。FIG. 1 is a vertical sectional view of a ceramic bearing of the present invention.
【図２】図１のＡ−Ａ線断面図である。FIG. 2 is a sectional view taken along the line AA of FIG.
【図３】図２のＢ方向矢視図である。FIG. 3 is a view on arrow B in FIG.
１…回転軸、２…超硬スリーブ、３…スペーサ、４…セ
ラミックス軸受、５…金属シェル、６…緩衝材（ゴ
ム）、７…ベアリングハウジング。1 ... Rotating shaft, 2 ... Carbide sleeve, 3 ... Spacer, 4 ... Ceramic bearing, 5 ... Metal shell, 6 ... Buffer material (rubber), 7 ... Bearing housing.
Claims (2)
軸受において、セラミックスをセグメント状に分割して
固定側部材の円周面に環状に配置し、該セグメント片の
周方向端部にテーパを設けたことを特徴とするセラミッ
クス軸受。1. A ceramic plain bearing for supporting a rotary shaft, wherein ceramics are divided into segments and arranged annularly on the circumferential surface of a stationary member, and a taper is provided at the circumferential end of the segment piece. Ceramic bearings characterized by
おいて、セグメント片の周方向端部のテーパとすべり軸
受内周円弧の交線をＲ形状にしたことを特徴とするセラ
ミックス軸受。2. The ceramic slide bearing according to claim 1, wherein the intersection of the taper at the end of the segment piece in the circumferential direction and the arc of the slide bearing inner circumference is R-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1472892A JPH05202939A (en) | 1992-01-30 | 1992-01-30 | Ceramics bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1472892A JPH05202939A (en) | 1992-01-30 | 1992-01-30 | Ceramics bearing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05202939A true JPH05202939A (en) | 1993-08-10 |
Family
ID=11869196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1472892A Pending JPH05202939A (en) | 1992-01-30 | 1992-01-30 | Ceramics bearing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05202939A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006258160A (en) * | 2005-03-16 | 2006-09-28 | Toshiba Corp | Radial slide bearing mechanism and rotary shaft |
| JP2013044417A (en) * | 2011-08-25 | 2013-03-04 | Toribotex Co Ltd | Sliding bearing structure and method for manufacturing the same |
| JPWO2012029121A1 (en) * | 2010-08-31 | 2013-10-28 | 三菱重工業株式会社 | Planetary gear mechanism, bearing structure, wind power generator, and planetary gear manufacturing method |
-
1992
- 1992-01-30 JP JP1472892A patent/JPH05202939A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006258160A (en) * | 2005-03-16 | 2006-09-28 | Toshiba Corp | Radial slide bearing mechanism and rotary shaft |
| JPWO2012029121A1 (en) * | 2010-08-31 | 2013-10-28 | 三菱重工業株式会社 | Planetary gear mechanism, bearing structure, wind power generator, and planetary gear manufacturing method |
| JP2013044417A (en) * | 2011-08-25 | 2013-03-04 | Toribotex Co Ltd | Sliding bearing structure and method for manufacturing the same |
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