JPS6225539Y2 - - Google Patents
Info
- Publication number
- JPS6225539Y2 JPS6225539Y2 JP1982017673U JP1767382U JPS6225539Y2 JP S6225539 Y2 JPS6225539 Y2 JP S6225539Y2 JP 1982017673 U JP1982017673 U JP 1982017673U JP 1767382 U JP1767382 U JP 1767382U JP S6225539 Y2 JPS6225539 Y2 JP S6225539Y2
- Authority
- JP
- Japan
- Prior art keywords
- lower shaft
- magnet
- shaft magnet
- bearing
- magnetic repulsion
- 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.)
- Expired
Links
- 230000005291 magnetic effect Effects 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000001939 inductive effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 230000005389 magnetism Effects 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
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/0408—Passive magnetic bearings
- F16C32/0423—Passive magnetic bearings with permanent magnets on both parts repelling each other
- F16C32/0427—Passive magnetic bearings with permanent magnets on both parts repelling each other for axial load mainly
-
- 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
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
-
- 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
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0402—Bearings not otherwise provided for using magnetic or electric supporting means combined with other supporting means, e.g. hybrid bearings with both magnetic and fluid supporting means
Description
【考案の詳細な説明】
［産業上の利用分野］
この考案は、磁気反発形軸受装置に関するもの
であり、例えば誘導形電力量計の回転円板等の回
転物を軸支する磁気反発形軸受装置に関するもの
である。[Detailed description of the invention] [Industrial application field] This invention relates to a magnetic repulsion type bearing device, such as a magnetic repulsion type bearing that supports a rotating object such as a rotating disk of an inductive watt-hour meter. It is related to the device.
［従来の技術］
第３図は従来の磁気反発形軸受装置を示す部分
分解斜視図、第４図は従来の磁気反発形軸受装置
を示す部分側断面図である。第３図及び第４図に
おいて、下部軸磁石１は、円板状に形成され、例
えば誘導形電力量計の回転円板（図示せず）の下
側面に取付けられるものであり、中心部に貫通孔
１０１と貫通孔１０１の内周面に取付けられたガ
イドブツシング１０２とを備えており、厚み方向
に着磁されている。軸受磁石２は、下部軸磁石１
と実質的に同一直径の円板状に形成され、下部軸
磁石１の下側に設置されるものであり、中心部に
貫通孔２０１を備えており、その着磁方向は下部
軸磁石１と磁気反発するような方向、すなわち下
部磁石１の着磁とは逆向の厚み方向に着磁されて
いる。ピン３は、下部軸磁石１の貫通孔１０１と
軸受磁石２の貫通孔２０１とに貫通挿入され、下
部軸磁石１の位置決めをするもので、例えば軸受
磁石２を設置する基台（図示せず）に取付けられ
ている。[Prior Art] FIG. 3 is a partially exploded perspective view showing a conventional magnetic repulsion type bearing device, and FIG. 4 is a partial side sectional view showing the conventional magnetic repulsion type bearing device. In FIGS. 3 and 4, the lower shaft magnet 1 is formed into a disk shape and is attached to the lower side of a rotating disk (not shown) of an inductive watt-hour meter, for example. It includes a through hole 101 and a guide bushing 102 attached to the inner peripheral surface of the through hole 101, and is magnetized in the thickness direction. The bearing magnet 2 is the lower shaft magnet 1
It is formed in the shape of a disk with substantially the same diameter as the lower shaft magnet 1, and is installed below the lower shaft magnet 1. It is equipped with a through hole 201 in the center, and its magnetization direction is the same as that of the lower shaft magnet 1. It is magnetized in the direction of magnetic repulsion, that is, in the thickness direction opposite to the magnetization of the lower magnet 1. The pin 3 is inserted into the through hole 101 of the lower shaft magnet 1 and the through hole 201 of the bearing magnet 2, and is used to position the lower shaft magnet 1, for example, on a base (not shown) on which the bearing magnet 2 is installed. ).
この従来例の動作を説明する。下部軸磁石１と
軸受磁石２とは実質的に同一形状に形成され、且
つ互いに反発するように、第４図に示すように極
性が反対方向になるように着磁されているので、
下部軸磁石１には第４図に示す浮上力Ｆが作用し
て、下部軸磁石１と軸受磁石２とは無接触の関係
となり、下部軸磁石１は機械的摩擦なしに回転円
板（図示せず）の回転につれて回転する。 The operation of this conventional example will be explained. The lower shaft magnet 1 and the bearing magnet 2 are formed in substantially the same shape, and are magnetized so that their polarities are in opposite directions as shown in FIG. 4 so that they repel each other.
A levitation force F shown in Fig. 4 acts on the lower shaft magnet 1, and the lower shaft magnet 1 and the bearing magnet 2 are in a non-contact relationship, and the lower shaft magnet 1 is attached to the rotating disk (Fig. (not shown).
［考案が解決しようとする問題点］
しかしながら、下部軸磁石１と軸受磁石２と
は、互いに同心状態を保とうとする磁気的作用を
有せず、したがつて夫々の偏磁、機械寸法、ピン
３の鉛直度に対する水平方向のずれ等が少しでも
あると下部軸磁石１は第５図に示す分力F2によ
つて軸受磁石２から浮上していることになり、同
心的関係を保つことは不可能である。すなわち、
下部軸磁石１には、第５図に示すように、ラジア
ル方向（水平方向）に寄せられようとする分力
F1が働き、ガイドブツシング１０２とピン３と
は、常に分力F1で互いに圧押接触している。こ
の分力F1は機械的摩擦を生じ、これによつて発
生する機械的エネルギー損失は、例えば誘導形電
力量計の始動特性、軽負荷変動等の諸特性を悪化
させる。[Problems to be Solved by the Invention] However, the lower shaft magnet 1 and the bearing magnet 2 do not have a magnetic effect that tries to maintain concentricity with each other, and therefore their respective biased magnetism, mechanical dimensions, and pin If there is even a slight deviation in the horizontal direction with respect to the verticality of 3, the lower shaft magnet 1 will be lifted from the bearing magnet 2 by the component force F2 shown in Fig. 5, and the concentric relationship will be maintained. is impossible. That is,
As shown in FIG.
F 1 acts, and the guide bushing 102 and pin 3 are always pressed into contact with each other with component force F 1 . This component force F 1 causes mechanical friction, and the resulting mechanical energy loss deteriorates the starting characteristics, light load fluctuations, and other characteristics of the inductive watt-hour meter, for example.
この考案は上記のような従来のものの欠点を除
去するためになされたものであり、第５図に示す
ラジアル方向に働く分力F1を取り除き、機械的
摩擦損失を軽減した磁気反発形軸受装置を提供す
ることを目的としている。 This invention was made to eliminate the drawbacks of the conventional bearings as described above, and it is a magnetic repulsion type bearing device that eliminates the component force F 1 acting in the radial direction and reduces mechanical friction loss, as shown in Fig. 5. is intended to provide.
［問題点を解決するための手段］
この考案に係る磁気反発形軸受装置は、下部軸
磁石と軸受磁石との下部側外周端面を斜めに切断
したものである。[Means for Solving the Problems] In the magnetic repulsion type bearing device according to the present invention, the lower outer peripheral end surfaces of the lower shaft magnet and the bearing magnet are cut obliquely.
［作用］
この考案の磁気反発形軸受装置においては、下
部軸磁石と軸受磁石の下部側外周端面を斜めに切
断しているため、下部軸磁石を浮上される分力
と、中心に寄せようとする分力とが働き、下部軸
磁石と軸受磁石とが偏心した場合にもその偏心が
自動的に修正されて、ガイドブツシングとピンと
の接圧を軽減乃至除去する。[Function] In the magnetic repulsion type bearing device of this invention, the lower shaft magnet and the lower outer circumferential end face of the bearing magnet are cut diagonally, so that the lower shaft magnet is not affected by the component force of floating and the effort to bring it to the center. Even if the lower shaft magnet and the bearing magnet are eccentric, the eccentricity is automatically corrected and the contact pressure between the guide bushing and the pin is reduced or eliminated.
［実施例］
以下この考案の一実施例を図について説明す
る。[Example] An example of this invention will be described below with reference to the drawings.
第１図はこの考案に係る磁気反発形軸受装置の
一実施例を示す部分側断面図である。第１図にお
いて、下部軸磁石１は円板状に作られその下部側
の外周端面１０３は、円錘面状に斜めに切断され
ている。また軸受磁石２も下部軸磁石１と実質的
に同じ寸法の円板形に作られておりその下部側外
周端面２０２も、斜めに切断されている。 FIG. 1 is a partial side sectional view showing an embodiment of the magnetic repulsion type bearing device according to the invention. In FIG. 1, the lower shaft magnet 1 is made in the shape of a disk, and its lower outer peripheral end surface 103 is cut obliquely into a conical shape. The bearing magnet 2 is also formed into a disk shape having substantially the same dimensions as the lower shaft magnet 1, and its lower outer peripheral end surface 202 is also cut diagonally.
次にこの実施例の動作を第２図を用いて説明す
る。下部軸磁石１の下部側外周端面１０３、及び
軸受磁石２の下部側外周端面２０２のみが、夫々
斜めに切断されているため、互いの磁束は第２図
に示すように上向き円錘面状になり、それ故下部
軸磁石１を浮上させる分力F3〜F8と、下部軸磁
石１を中心に寄せようとする分力F9〜F12とが働
く。従つて、下部軸磁石１と軸受磁石２とは同心
性を維持し、ガイドブツシング１０２とピン３と
は殆ど無接触状態となる。また萬一下部軸磁石１
と軸受磁石２とが偏心していても、ガイドブツシ
ング１０２とピン３とは軽く接触する程度とな
り、摩擦による損失が少なくなる。さらに第２図
に示すように、外力によつてたとえば下部軸磁石
１が左に偏心することによりガイドブツシング１
０２がピン３に押し付けられる状態においては、
図中の左側部分の求心力が大きくなり、下部軸磁
石１を中心に寄せようとする分力F′9，F′10は大
きくなる。他方、図中の右側部分の求心力は小さ
くなり、下部軸磁石１を中心に寄せようとする分
力F′11，F′12は小さくなる。従つて、下部軸磁
石１を図中の右方向、即ち中心に復元させようと
する力が働き、分力F′9，F′10と分力F′10，F′12
とが等しくなる状態、つまり第１図の同心状態に
復元される。 Next, the operation of this embodiment will be explained using FIG. 2. Since only the lower outer circumferential end surface 103 of the lower shaft magnet 1 and the lower outer circumferential end surface 202 of the bearing magnet 2 are cut obliquely, the mutual magnetic flux flows upward in the shape of a conical surface, as shown in FIG. Therefore, component forces F 3 to F 8 that levitate the lower shaft magnet 1 and component forces F 9 to F 12 that try to bring the lower shaft magnet 1 to the center act. Therefore, the lower shaft magnet 1 and the bearing magnet 2 maintain concentricity, and the guide bushing 102 and the pin 3 are almost in a non-contact state. Also, Manichi lower shaft magnet 1
Even if the bearing magnet 2 and the guide bushing 102 are eccentric, the guide bushing 102 and the pin 3 will only lightly contact each other, and loss due to friction will be reduced. Furthermore, as shown in FIG.
In the state where 02 is pressed against pin 3,
The centripetal force on the left side of the figure increases, and the component forces F'9 and F'10 that try to bring the lower shaft magnet 1 to the center increase. On the other hand, the centripetal force on the right side of the figure becomes smaller, and the component forces F'11 and F'12 that try to bring the lower shaft magnet 1 to the center become smaller. Therefore, a force acts to restore the lower shaft magnet 1 to the right direction in the figure, that is, to the center, and component forces F′9, F′10 and component forces F′10, F′12
The state in which the
［考案の効果］
この考案は以上のように構成され、下部軸磁石
の下部側外周端面を斜めに切断しているため、下
部軸磁石を浮上させようとする分力と、中心に寄
せようとする分力とが働き、下部軸磁石と軸受磁
石とのそれぞれの偏磁、機械、寸法、水平方向の
ずれがあつても、ガイドブツシングとピンとを無
接触状態にすることができ、摩擦による機械的損
失を少なくすることができる効果がある。[Effects of the invention] This invention is constructed as described above, and since the lower outer circumferential end face of the lower shaft magnet is cut diagonally, the force that tries to levitate the lower shaft magnet and the force that tries to bring it to the center are reduced. Even if the lower shaft magnet and the bearing magnet are biased, mechanically, dimensionally, or horizontally misaligned, the guide bushing and pin can be kept in a non-contact state, and the friction This has the effect of reducing mechanical loss.
第１図はこの考案に係る磁気反発形軸受装置の
一実施例を示す部分側断面図、第２図は第１図の
動作説明図、第３図は従来の磁気反発形軸受装置
を示す部分分解斜視図、第４図は従来の磁気反発
形軸受装置を示す部分側断面図、第５図は第４図
の動作説明図である。
図において、各図中同一部分には同一符号を付
しており、１は下部軸磁石、１０１は貫通孔、１
０２はガイドブツシング、１０３は下部側外周端
面、２は軸受磁石、２０１は貫通孔である。
Fig. 1 is a partial side sectional view showing an embodiment of the magnetic repulsion type bearing device according to this invention, Fig. 2 is an explanatory view of the operation of Fig. 1, and Fig. 3 is a part showing a conventional magnetic repulsion type bearing device. FIG. 4 is an exploded perspective view, FIG. 4 is a partial side sectional view showing a conventional magnetic repulsion type bearing device, and FIG. 5 is an explanatory view of the operation of FIG. 4. In the figures, the same parts in each figure are given the same reference numerals, 1 is the lower shaft magnet, 101 is the through hole, 1
02 is a guide bushing, 103 is a lower outer peripheral end surface, 2 is a bearing magnet, and 201 is a through hole.
Claims (1)
れた円板状の下部軸磁石、及び前記下部軸磁石と
実質的に同一直径の円板状に形成され厚み方向に
且つ前記下部軸磁石と反対方向の極性に着磁され
た軸受磁石を備え、前記下部軸磁石及び前記軸受
磁石の下部側外周端面のみを円錘面状に斜めに切
欠したことを特徴とする磁気反発形軸受装置。 a disk-shaped lower shaft magnet attached to the lower surface of the rotating object and magnetized in the thickness direction; and a disk-shaped lower shaft magnet having substantially the same diameter as the lower shaft magnet and magnetized in the thickness direction and with the lower shaft magnet. What is claimed is: 1. A magnetic repulsion type bearing device comprising bearing magnets magnetized with opposite polarities, and characterized in that only the lower shaft magnet and the lower outer peripheral end face of the bearing magnet are obliquely cut out in a conical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982017673U JPS58119621U (en) | 1982-02-09 | 1982-02-09 | Magnetic repulsion type bearing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1982017673U JPS58119621U (en) | 1982-02-09 | 1982-02-09 | Magnetic repulsion type bearing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58119621U JPS58119621U (en) | 1983-08-15 |
| JPS6225539Y2 true JPS6225539Y2 (en) | 1987-06-30 |
Family
ID=30029963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1982017673U Granted JPS58119621U (en) | 1982-02-09 | 1982-02-09 | Magnetic repulsion type bearing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58119621U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012216450A1 (en) * | 2012-09-14 | 2014-03-20 | Pfeiffer Vacuum Gmbh | Method for centering a vacuum pump or a rotation unit for a vacuum pump |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5141007U (en) * | 1974-09-20 | 1976-03-26 | ||
| JPS5480573A (en) * | 1977-11-30 | 1979-06-27 | Sachs Systemtechnik Gmbh | Magnetic switch lock |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5278071U (en) * | 1975-12-09 | 1977-06-10 |
-
1982
- 1982-02-09 JP JP1982017673U patent/JPS58119621U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5141007U (en) * | 1974-09-20 | 1976-03-26 | ||
| JPS5480573A (en) * | 1977-11-30 | 1979-06-27 | Sachs Systemtechnik Gmbh | Magnetic switch lock |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58119621U (en) | 1983-08-15 |
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