JPS62196416A - Sliding bearing device - Google Patents
Sliding bearing deviceInfo
- Publication number
- JPS62196416A JPS62196416A JP3858386A JP3858386A JPS62196416A JP S62196416 A JPS62196416 A JP S62196416A JP 3858386 A JP3858386 A JP 3858386A JP 3858386 A JP3858386 A JP 3858386A JP S62196416 A JPS62196416 A JP S62196416A
- Authority
- JP
- Japan
- Prior art keywords
- bearing
- sintered
- thrust
- bearing portion
- radial
- 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.)
- Granted
Links
- 239000000956 alloy Substances 0.000 claims abstract description 11
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 11
- 239000010687 lubricating oil Substances 0.000 abstract description 8
- 230000001050 lubricating effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 1
Landscapes
- Sliding-Contact Bearings (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は例えば無給油小径の小型モータ等におけるす
べり軸受装置に係り、特に回転軸に印加されるラジアル
荷重およびスラスト荷重の両荷重を、上記回転軸を支承
するように一個所にまとめた一体型の軸受に同時に受け
持たせるようにしたものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a sliding bearing device in, for example, a small-diameter, oil-free motor, etc. The rotary shaft is supported by an integral bearing that is assembled in one place at the same time.
第３図は、アキシャル・ギャップ型の直流回転機に従来
の軸受装置を採用した実施例を示す断面図であり２図に
おいて＋１１は鉛直方向に設置された回転軸、（８）お
よび（９）はそれぞれこの回転軸（１）に印加されたラ
ジアル荷重およびスラスト荷重の両荷重を受け持つ上軸
受と下軸受であり、（４）はこれら上下軸受（８） １
９）を保持する軸受ハウジング、（５）は直流回転機に
おけるロータ、（６）はこのロータ（５）と上記回転軸
（１）との結合用ハブ、（７）は直流回転機のステータ
である。Fig. 3 is a sectional view showing an example in which a conventional bearing device is adopted for an axial gap type DC rotating machine. are an upper bearing and a lower bearing that respectively bear both the radial load and the thrust load applied to this rotating shaft (1), and (4) are these upper and lower bearings (8) 1
9), (5) is the rotor of the DC rotating machine, (6) is the hub for connecting the rotor (5) and the rotating shaft (1), and (7) is the stator of the DC rotating machine. be.
筆記構成において回転軸（１）が回転中この回転軸Ｃ１
）、ロータ（５）およびハブ（６）によるスラスト荷重
やロータ（５）およびハブ（６）の回転に伴うラジアル
荷重を上記の上軸受（８）と下軸受（９）が受け持って
いる。While the rotation axis (1) is rotating in the writing configuration, this rotation axis C1
), the thrust load caused by the rotor (5) and the hub (6), and the radial load caused by the rotation of the rotor (5) and the hub (6) are carried by the upper bearing (8) and the lower bearing (9).
従来の軸受装置は以上のように構成されているので、少
くとも上軸受（８）もしくは下軸受（９）のどちらかに
スラスト荷重を受け持たせるために高価な玉軸受を採用
しなければならす、その分コスト高になるという問題点
があった。またこの問題点を解決するために上軸受（８
）と下軸受（９）の他に第４図に示すようなスラスト受
皿ａ〔を付加するようにしたものもあった。しかしこの
構造では尚然スラスト受皿を別途に用意しなければなら
す、しかもこの場合は直流回転機の組立がより複雑にな
る等の問題点を伴うものである。この発明はこれらの問
題点を解消することを目的とする。Since conventional bearing devices are configured as described above, expensive ball bearings must be used at least in either the upper bearing (8) or the lower bearing (9) to carry the thrust load. However, there was a problem in that the cost increased accordingly. In addition, in order to solve this problem, the upper bearing (8
) and the lower bearing (9), some had a thrust receiver a as shown in Figure 4. However, with this structure, it is still necessary to prepare a thrust receiver separately, and in this case, there are problems such as the assembly of the DC rotating machine becoming more complicated. This invention aims to solve these problems.
この発明の場合は、焼結合金からなるラジアル支持焼結
軸受部の下面に、この軸受部の焼結合金より空孔率の小
さい焼結合金からなるスラスト支持焼結軸受部を重合状
態に付加し、これらを一体型にまとめて軸受ハウジング
に支承させている。In the case of this invention, a thrust support sintered bearing part made of a sintered alloy having a smaller porosity than the sintered alloy of this bearing part is added in a superposed state to the lower surface of a radial support sintered bearing part made of a sintered alloy. However, these are integrated and supported by a bearing housing.
この発明の場合は、ラジアル荷重は上部に位置するラジ
アル支持焼結軸受部に、またスラスト荷重はその下部に
位置させたスラスト支持焼結軸受部により同時に受けら
れ、しかもスラスト支持焼結軸受部は、ラジアル支持焼
結軸受部の焼結合金の空孔率より小さくしているので、
上部のラジアル支持焼結軸受部から浸み出した潤滑油の
スラスト支持焼結軸受部での持つが良く、これを核部の
潤滑剤として利用でき、また両軸受け一体型にまとめら
れているので潤滑油の循環効率も良い。In the case of this invention, the radial load is simultaneously received by the radial support sintered bearing located at the upper part, and the thrust load is simultaneously received by the thrust support sintered bearing located at the lower part. , the porosity is smaller than the porosity of the sintered alloy in the radial support sintered bearing part.
The lubricating oil that has seeped out from the upper radial support sintered bearing is retained in the thrust support sintered bearing and can be used as a lubricant for the core, and since both bearings are integrated into one unit. The lubricating oil circulation efficiency is also good.
以下この発明の一実施例について説明する。すなわち第
１図はアキシャル・ギャップ型の直流回転機に本発明の
すべり軸受装置を実施した断面図であり９図において（
１）は鉛直方向に設置された回転軸、（２）はこの回転
軸（１）に印加されたラジアル荷重を受け持つ焼結合金
よりなる上段軸受、 （３ａ）はこの上段軸受（２）と
同様に、上記回転軸＋１１に印加されたラジアル荷重を
受け持つ上部ラジアル支持焼結軸受部、 （３ｂ）はこ
の軸受部の下面にスラスト面を上にして重合状態に設け
た側断面り字型をなす下部スラスト支持焼結軸受部であ
り、これらラジアル支持焼結軸受部（３ａ）とスラスト
支持焼結軸受部（３ｂ）とで一体型の下段軸受（３）を
構成している。（４）はこれら上段軸受（２）と下段軸
受（３）を保持する軸受ハウジングである。An embodiment of this invention will be described below. That is, Fig. 1 is a cross-sectional view of an axial gap type DC rotating machine in which the sliding bearing device of the present invention is implemented, and in Fig. 9 (
1) is a rotating shaft installed in the vertical direction, (2) is an upper stage bearing made of a sintered alloy that handles the radial load applied to this rotating shaft (1), and (3a) is the same as this upper stage bearing (2). , an upper radial support sintered bearing part that takes charge of the radial load applied to the rotating shaft +11; (3b) is a sintered bearing part with a side cross section formed in an overlapping state with the thrust surface facing up on the lower surface of this bearing part; This is a lower thrust support sintered bearing part, and these radial support sintered bearing part (3a) and thrust support sintered bearing part (3b) constitute an integrated lower stage bearing (3). (4) is a bearing housing that holds these upper stage bearings (2) and lower stage bearings (3).
上記構成において回転軸ｆｉ＋の中心軸に働くラジアル
荷重は、上段軸受（２）と下段軸受（３）の上部に位置
するラジアル支持焼結軸受部（３ａ）とで受けられる。In the above configuration, the radial load acting on the central axis of the rotating shaft fi+ is received by the upper stage bearing (2) and the radial support sintered bearing part (3a) located at the upper part of the lower stage bearing (3).
−刃口転軸１１）の中心軸に働くスラスト荷重は。- What is the thrust load acting on the central axis of the blade rotation axis 11)?
下段軸受（３）の下部に位置するスラスト支持焼結軸受
部（３ｂ）で受けられる。そして上記ラジアル支持焼結
軸受部（３ａ）では回転軸（１）の回転に伴い含浸され
ていた潤滑油が軸受内周面に浸み出し、そのり上記回転
軸（１）を伝わって下方に流れる。この時下方に位置す
るスラスト支持焼結軸受部（３ｂ）は上部のラジアル支
持焼結軸受部（３ａ）よりも空孔率が小さいため、流下
してきた潤滑油の核部での持つが良く、そのため回転軸
（１）の下面とスラスト支持焼結軸受部（３ｂ）との間
には充分に潤滑油が行きわたりスラスト面の摩耗が少く
なる。It is received by the thrust support sintered bearing part (3b) located at the bottom of the lower stage bearing (3). In the radial support sintered bearing part (3a), as the rotating shaft (1) rotates, the impregnated lubricating oil seeps into the inner circumferential surface of the bearing and is transmitted downward through the rotating shaft (1). flows. At this time, the thrust support sintered bearing part (3b) located below has a smaller porosity than the upper radial support sintered bearing part (3a), so the lubricating oil flowing down is better retained in the core part. Therefore, lubricating oil is sufficiently distributed between the lower surface of the rotating shaft (1) and the thrust support sintered bearing portion (3b), reducing wear on the thrust surface.
なお上記した第１図の実施例ではスラスト支持焼結軸受
部（３ｂ）に側断面り字型のものを採用したが第２図の
他の実施例に示すように、これはカップ型に形成された
ものであってもよい。また上記第１図および第２図の実
施例では、アキシャル・ギャップ型の直流回転機への本
発明の軸受装置の適用例を示したが、これに特定される
ことなく例えばＶＴＲのキャプスタンモータやフロッピ
ーディスクのスピンドルモータなどの軸受装置として使
用してもよい。その他−上記の各実施例では回転軸を上
段軸受と下段軸受との双方で支承した場合を示している
が、上部のラジアル支持焼結軸受部の軸受部を延長する
等の設計変更により回転軸を下段軸受だけで支承するよ
うにしてもよい。In the embodiment shown in FIG. 1 described above, the thrust support sintered bearing part (3b) is shaped like a square cross section, but as shown in the other embodiment shown in FIG. 2, it is formed into a cup shape. It may be something that has been done. Further, in the embodiments shown in FIGS. 1 and 2 above, an example of application of the bearing device of the present invention to an axial gap type DC rotating machine was shown, but the bearing device of the present invention is not limited to this and is applicable to, for example, a capstan motor of a VTR. It may also be used as a bearing device for spindle motors of floppy disks, etc. Others - Each of the above examples shows a case where the rotating shaft is supported by both the upper bearing and the lower bearing, but due to design changes such as extending the bearing part of the upper radial support sintered bearing, the rotating shaft may be supported only by the lower bearing.
この発明は以上のようにラジアル支持焼結軸受部の下面
に、より空孔率の小さいスラスト支持焼結軸受部を重合
状態に設けて、これらを一体型にまとめて軸受ハウジン
グに支承させているので。As described above, in this invention, the thrust support sintered bearing part with lower porosity is provided in an overlapping state on the lower surface of the radial support sintered bearing part, and these parts are integrated into a single body and supported by the bearing housing. So.
回転軸に加わるラジアル荷重とスラスト荷重をこの一体
型の軸受で同時に受けることができ、これにより高価な
玉軸受を使用することや別途にスラスト受皿を設ける必
要がなく、安価で組立の簡単なすべり軸受装置が得られ
るばかりでなく、潤滑油の循環効率が良いので少い潤滑
油で充分な潤滑作用が得られるという効果も有するもの
である。This integrated bearing can simultaneously receive the radial load and thrust load applied to the rotating shaft, eliminating the need to use expensive ball bearings or providing a separate thrust receiver, resulting in an inexpensive and easy-to-assemble sliding system. This not only provides a bearing device, but also has the effect that sufficient lubricating action can be obtained with a small amount of lubricating oil because the lubricating oil circulation efficiency is good.
第１図および第２図はこの発明のすべり軸受装置の各実
施例を示す断面図、第３図は玉軸受を使用した従来の軸
受装置を示す断面図、第４図は焼結軸受とスラスト受皿
を使用した従来の軸受装置を示す断面図である。
なお図中、（１１は回転軸、 （５ａ）はラジアル支持
焼結軸受部、 （３ｂ）はスラスト支持焼結軸受部、（
４）上軸受ハウジングを示す。
その他図中同−符号は同一または相当部分を示すものと
する。1 and 2 are cross-sectional views showing each embodiment of the sliding bearing device of the present invention, FIG. 3 is a cross-sectional view showing a conventional bearing device using ball bearings, and FIG. 4 is a sintered bearing and a thrust bearing device. FIG. 2 is a cross-sectional view showing a conventional bearing device using a saucer. In the figure, (11 is the rotating shaft, (5a) is the radial support sintered bearing, (3b) is the thrust support sintered bearing, (
4) Shows the upper bearing housing. In other figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
たラジアル荷重を受け持つ焼結合金からなるラジアル支
持焼結軸受部と、上記回転軸に印加されたスラスト荷重
を受け持つ上記ラジアル支持焼結軸受部の焼結合金より
空孔率の小さい焼結合金からなるスラスト支持焼結軸受
部とを備え、上記ラジアル支持焼結軸受部と上記スラス
ト支持焼結軸受部とを一体型にまとめて軸受ハウジング
に支承させたことを特徴とするすべり軸受装置。A rotating shaft installed in the vertical direction, a radial support sintered bearing made of a sintered alloy that takes on the radial load applied to the rotating shaft, and the radial support sintered bearing that takes on the thrust load applied to the rotating shaft. and a thrust support sintered bearing made of a sintered alloy with a lower porosity than the sintered alloy of the bearing, and the radial support sintered bearing and the thrust support sintered bearing are integrated into a bearing. A sliding bearing device characterized by being supported by a housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3858386A JPS62196416A (en) | 1986-02-24 | 1986-02-24 | Sliding bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3858386A JPS62196416A (en) | 1986-02-24 | 1986-02-24 | Sliding bearing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62196416A true JPS62196416A (en) | 1987-08-29 |
| JPH0554563B2 JPH0554563B2 (en) | 1993-08-12 |
Family
ID=12529310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3858386A Granted JPS62196416A (en) | 1986-02-24 | 1986-02-24 | Sliding bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62196416A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02118215A (en) * | 1988-10-25 | 1990-05-02 | Matsushita Electric Ind Co Ltd | Fluid bearing device |
-
1986
- 1986-02-24 JP JP3858386A patent/JPS62196416A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02118215A (en) * | 1988-10-25 | 1990-05-02 | Matsushita Electric Ind Co Ltd | Fluid bearing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0554563B2 (en) | 1993-08-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |