JPH02278008A - Thrust ball bearing and rotor and motor using same - Google Patents
Thrust ball bearing and rotor and motor using sameInfo
- Publication number
- JPH02278008A JPH02278008A JP9848089A JP9848089A JPH02278008A JP H02278008 A JPH02278008 A JP H02278008A JP 9848089 A JP9848089 A JP 9848089A JP 9848089 A JP9848089 A JP 9848089A JP H02278008 A JPH02278008 A JP H02278008A
- Authority
- JP
- Japan
- Prior art keywords
- circular ring
- circular
- rings
- rolling bearing
- magnetic force
- 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
- 238000005096 rolling process Methods 0.000 claims abstract description 45
- 239000000696 magnetic material Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 18
- 239000010959 steel Substances 0.000 abstract description 18
- 230000000717 retained effect Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はスラストころがり軸受とそれを用いたロータ及
びモータに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a thrust rolling bearing and a rotor and motor using the thrust rolling bearing.
（従来の技術）
従来、スラストころがり軸受は、第１の円輪と、第１の
円輪に対して平行に回転自在な第２の円輪と、両円輪の
対向面に挾持された球体、円柱コロ又は円錐コロ等の複
数の転動部材からなっている。(Prior Art) Conventionally, thrust rolling bearings include a first circular ring, a second circular ring that is rotatable in parallel to the first circular ring, and a spherical body held between opposing surfaces of both circular rings. , a plurality of rolling members such as cylindrical rollers or conical rollers.
転動部材は両円輪の互いの対向面に転動可能に挟着され
、その対向面に設けられた軸受軌道内を転動するように
なっており、第１の円輪と第２の円輪が相対的に回動可
能になっている。なお、転動部材はリテーナと呼ばれる
保持具に保持された上で百円輪間に挟着されるようにな
っている。The rolling member is rollably sandwiched between the opposing surfaces of both circular rings, and rolls within a bearing raceway provided on the opposing surfaces. The circular rings are relatively rotatable. The rolling member is held by a holder called a retainer and is sandwiched between the 100-yen wheels.
（発明が解決しようとする課題）
しかしながら、上記の従来のスラストころがり軸受には
次のような課題が有る。(Problems to be Solved by the Invention) However, the conventional thrust rolling bearing described above has the following problems.
第１の円輪と第２の円輪の間に転動部材が挟着されて転
動部材の転動によって第１の円輪と第２の円輪が相対的
に回転するためスラスト方向の軸受としては問題ないが
、両円輪の回転の際の平行度が低いという課題がある。A rolling member is sandwiched between the first circular ring and the second circular ring, and the rolling of the rolling member causes the first circular ring and the second circular ring to rotate relatively, so that the thrust direction There is no problem as a bearing, but there is a problem that the parallelism of both circular rings is low when rotating.
従って、本発明は両輪の平行度を高く確保することが可
能なスラストころがり軸受と、それを用いたロータ及び
モータを提供することを目的とする。Therefore, an object of the present invention is to provide a thrust rolling bearing capable of ensuring high parallelism between both wheels, and a rotor and motor using the thrust rolling bearing.
（課題を解決するための手段） 上記課題を解決するため本発明は次の構成を備える。(Means for solving problems) In order to solve the above problems, the present invention has the following configuration.
すなわち、第１の円輪と、該第１の円輪に対して回動自
在に配された第２の円輪と、該第１及び第２の円輪との
対向面間に転動可能に配された球体等の転動部材とを具
備するスラストころがり軸受において、前記第１の円輪
及び第２の円輪を相対的に接近するよう付勢するための
磁力手段を設けたことを特徴とし、そのスラストころが
り軸受゛を用いたロータは、第１の円輪及び／もしくは
請求項１，２又は３のスラストころがり軸受の第１の円
輪及び／もしくは第２の円輪へその回転面に対して垂直
な、回転体を取付けるための回転体取付部を設けたこと
を特徴とし、モータは第１の円輪と請求項１．２又は３
のスラストころがり軸受の第１の円輪と第２の円輪の一
方を固定部としてステータコイルを設け、他方を回転子
として磁力手段を兼ねた永久磁石を設けてなることを特
徴とする。That is, a first circular ring, a second circular ring rotatably disposed with respect to the first circular ring, and a surface that is rotatable between opposing surfaces of the first and second circular rings. In a thrust rolling bearing comprising a rolling member such as a sphere arranged in The rotor using the thrust rolling bearing is characterized in that the rotation of the rotor to the first circular ring and/or the first circular ring and/or the second circular ring of the thrust rolling bearing according to claim 1, 2 or 3 is characterized in that the rotor uses the thrust rolling bearing. Claim 1.2 or 3 characterized in that a rotating body mounting part for mounting a rotating body is provided perpendicular to the plane, and the motor has a first circular ring.
The thrust rolling bearing is characterized in that one of the first circular ring and the second circular ring is provided with a stator coil as a fixed part, and the other is provided with a permanent magnet serving as a rotor and also serves as a magnetic force means.
（作用） 作用について説明する。(effect) The effect will be explained.
第１の円輪と第２の円輪を磁力手段を介して互いに接近
させるよう付勢するので、常に両円輪は最も接近した状
態に保持されるため、転動部材の加工精度さえ確保され
れば両円輪は高い平行度を確保することができる。また
、ロータにおいては回転体取付部を第１の円輪及び／も
しくは第２の円輪へ垂直に設けたため、その回転体取付
部に取付けられる回転体を１の平面内で精度よく回転さ
せることができる。さらに、モータにおいては第１の円
輪もしくは第２の円輪の一方を回転子として他方に対し
て高い平行度を保持しながら回転させることができる。Since the first circular ring and the second circular ring are urged to approach each other via magnetic means, the two circular rings are always maintained in the closest state, ensuring even machining accuracy of the rolling member. If this is done, high parallelism of both circular rings can be ensured. In addition, in the rotor, since the rotating body mounting portion is provided perpendicularly to the first circular ring and/or the second circular ring, the rotating body attached to the rotating body mounting portion can be rotated with high precision within one plane. I can do it. Furthermore, in the motor, one of the first circular ring and the second circular ring can be used as a rotor and rotated while maintaining a high degree of parallelism with respect to the other.
（実施例）
以下、本発明の好適な実施例について添付図面とともに
詳述する。(Embodiments) Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
まず、本発明に係るスラストころがり軸受について第１
図と共に説明する。First, the first part regarding the thrust rolling bearing according to the present invention.
This will be explained with figures.
１０は第１の円輪であって、磁性材料で形成されており
、略円板状をなしている。Reference numeral 10 denotes a first circular ring, which is made of a magnetic material and has a substantially disk shape.
１２は第２の円輪であって、磁性材料で形成されており
、平面形状はやはり円板状をなし、上面が開口された浅
い凹部１４を有する容器状に形成されている。Reference numeral 12 denotes a second circular ring, which is made of a magnetic material, has a disk-like planar shape, and is shaped like a container having a shallow recess 14 with an open top surface.
■６・・・は転動部材の一例である高精度の鋼球であり
、適宜な数リテーナ１８によってリング状に保持されて
いる。鋼球１６・・・の上下端はリテーナ１８から突出
し、リテーナ１日内で転動可能になっている。鋼球１６
・・・の上下端は第１の円輪１０と第２の円輪１２のそ
れぞれの対向面に刻設されたリング状の軸受軌道２０．
２２に遊嵌しており、鋼球１６・・・は上端及び下端に
おいて軸受軌道２０．２２と点接触すると共に転動可能
になっている。(6) High-precision steel balls are an example of rolling members, and are held in a ring shape by an appropriate number of retainers 18. The upper and lower ends of the steel balls 16 protrude from the retainer 18 and can roll within one day of the retainer. steel ball 16
The upper and lower ends of .
22, and the steel balls 16 are in point contact with the bearing raceway 20, 22 at their upper and lower ends and are able to roll.
２４・・・は磁力手段の一例である永久磁石であり、第
２の円輪１２の凹部１４内であってリテーナ■８の外周
に複数個配設されている。この永久磁石２４・・・は凹
部１４底面に自らの磁力で固定されると共に、第１の円
輪１０を第２の円輪１２の方へ常時その磁力で吸引付勢
している。従って、第１の円輪１０と第２の円輪１２は
常時互いに接近する方向へ付勢されている。しかし、第
１の円輪１０と第２の円輪１２が接触しているのは鋼球
１６・・・の上下端の点接触部分だけであり、かつ鋼球
１６・・・が軸受軌道２０．２２内で転動可能なため、
第１の円輪１０と第２の円輪Ｉ２は相対的に回動可能と
なる。永久磁石２４・・・の磁力により、第１の円輪１
０と第２の円輪１２が鋼球１６・・・と接する部分に摩
擦抵抗が生じると考えられるが、接触部分が面接触では
なく点接触のため摩擦抵抗は無視することができる。A plurality of permanent magnets 24 are an example of magnetic force means, and a plurality of permanent magnets are disposed within the recess 14 of the second circular ring 12 and around the outer periphery of the retainer 8. The permanent magnets 24 are fixed to the bottom surface of the recess 14 by their own magnetic force, and always attract and bias the first circular ring 10 toward the second circular ring 12 with their magnetic force. Therefore, the first circular ring 10 and the second circular ring 12 are always urged toward each other. However, the first circular ring 10 and the second circular ring 12 are in contact only at the point contact portions at the upper and lower ends of the steel balls 16..., and the steel balls 16... are in contact with the bearing raceway 22. Because it can roll within .22,
The first circular ring 10 and the second circular ring I2 are relatively rotatable. Due to the magnetic force of the permanent magnets 24..., the first circular ring 1
It is thought that frictional resistance occurs at the portions where the steel balls 16 and the second circular ring 12 contact each other, but the frictional resistance can be ignored because the contacting portions are not surface contact but point contact.
本実施例のスラストころがり軸受では鋼球１６・・・の
精度さえ確保できれば第１及び第２の円輪１０．１２は
常に接近する方向へ付勢されているので第１及び第２の
円輪１０．１２は常に高い平行度を保持することができ
る。本発明に係るスラストころがり軸受は、永久磁石２
４・・・により組立が簡単になると共にぶれることがな
く、精度よく１の平面内で回転体を回転させる場合の軸
受に用いて好適である。なお本発明に係るスラストころ
がり軸受の変形例としては、転動部材の材質として鋼球
の他、樹脂球を用いてもよいし、転動部材の形状は球体
の他円柱コロや円錐コロであってもよい。また、磁力手
段は永久磁石でもよいし、電磁石を使用することもでき
る。また、磁力手段は第１の円輪１２側へ設けてもよい
し、互いに吸引する極性にして第１及び第２の円輪１０
．１２の両方に設けてもよい。その際は第１及び第２の
円輪１０．１２は必ずしも磁性材料で形成されていなく
てもよく、磁力手段を適宜な手段（例：接着、螺止等）
で第１及び第２の円輪１ｏ、１２に固定してもよい。ま
た、磁力手段としては第１の円輪１０及び／もしくは第
２の円輪１２の一部又は全部を適宜着磁して互いに接近
させるための磁力を発生させてもよい。磁力手段の設け
る位置についても第１及び第２の円輪１０．１２の対向
面に限らず外周面でもよく、要は第１及び第２の円輪１
０．１２が互いに接近するだめの磁力が十分に確保され
ればよい。さらに磁力手段として第１及び第２の円輪１
０、工２から離隔した位置に設けた磁石と反発する磁石
を第１の円輪１ｏ及び／もしくは第２の円輪１２に設け
、その互いに反発しようとする磁力によって第１及び第
２の円輪１０．１２を接近させるよう付勢することもで
きる。応用例としては例えば第１図の第１の円輪１０へ
回転テーブル（不図示）を設けてインデックステーブル
として使用すれば高精度のインデックステーブルとして
使用できる。その際、第１及び第２の円輪１０．１２０
間隙２６内にゴム等の柔軟性を有する部材で形成したパ
ツキンを介挿すれば内部への切粉の侵入等を防止するこ
とができる。In the thrust rolling bearing of this embodiment, as long as the accuracy of the steel balls 16 can be ensured, the first and second circular rings 10 and 12 are always urged in the direction toward each other. 10.12 can always maintain high parallelism. The thrust rolling bearing according to the present invention has a permanent magnet 2
4... simplifies assembly and prevents wobbling, making it suitable for use in bearings for rotating a rotating body within one plane with high accuracy. In addition, as a modification of the thrust rolling bearing according to the present invention, resin balls may be used in addition to steel balls as the material of the rolling member, and the shape of the rolling member may be cylindrical rollers or conical rollers in addition to spheres. It's okay. Further, the magnetic means may be a permanent magnet or an electromagnet. Further, the magnetic force means may be provided on the first circular ring 12 side, or the magnetic force means may be provided on the first circular ring 12 side, or the first and second circular rings 10 may be provided with polarity that attracts each other.
．． 12 may be provided. In that case, the first and second rings 10.12 do not necessarily need to be made of magnetic material, and the magnetic force means may be replaced by appropriate means (e.g., adhesive, screw fastening, etc.).
It may be fixed to the first and second circular rings 1o and 12. Further, as the magnetic force means, a part or all of the first circular ring 10 and/or the second circular ring 12 may be appropriately magnetized to generate magnetic force for bringing them closer to each other. The position where the magnetic force means is provided is not limited to the opposing surfaces of the first and second circular rings 10 and 12, but may also be on the outer circumferential surfaces.
It is only necessary to ensure sufficient magnetic force for the 0.12 magnets to approach each other. Furthermore, first and second circular rings 1 are used as magnetic force means.
0, a magnet that repels the magnet provided at a position separated from the workpiece 2 is provided in the first circular ring 1o and/or the second circular ring 12, and the first and second circles are repelled by the mutually repelling magnetic force. It is also possible to bias the rings 10.12 closer together. As an example of application, for example, if a rotary table (not shown) is provided on the first circular ring 10 in FIG. 1 and used as an index table, it can be used as a highly accurate index table. At that time, the first and second circular rings 10.120
If a gasket made of a flexible member such as rubber is inserted into the gap 26, it is possible to prevent chips from entering the inside.
次に、本発明に係るスラストころがり軸受を用いたロー
タについて第２図と共に説明する。Next, a rotor using a thrust rolling bearing according to the present invention will be explained with reference to FIG.
同図において第１の円輪３ｏは基部３２へ固定され、磁
力手段である永久磁石３４・・・は第１の円輪３０側に
設けられている。In the figure, the first circular ring 3o is fixed to the base 32, and permanent magnets 34, which are magnetic force means, are provided on the first circular ring 30 side.
第２の円輪３６は永久磁石３４・・・の磁力により第１
の円輪３０側へ付勢され、その磁力（付勢力）によって
リテーナ３８に保持された転動手段である鋼球４ｏ・・
・は第１及び第２の円輪３ｏ、３６によって挾持されて
いる。The second circular ring 36 is connected to the first ring by the magnetic force of the permanent magnets 34...
Steel balls 4o, which are rolling means, are urged toward the circular ring 30 side and held by the retainer 38 by the magnetic force (biasing force).
* is held between the first and second rings 3o and 36.
４２は回転体取付部の一例である回転軸であり、第２の
円輪３６内底面より垂設され、第１の円輪３０に穿設さ
れた透孔４４及び基部３２に穿設された透孔４６を挿通
している。この回転軸４２に回転体４８が取付けられる
。回転軸４２は、第２の円輪３６が常時基部３２（又は
第１の円輪３０）と平行な状態が保たれているため、基
部３２に対して常時垂直状態を保持可能になっている。Reference numeral 42 denotes a rotating shaft, which is an example of a rotating body attachment part, and is vertically installed from the inner bottom surface of the second circular ring 36, and is bored in the through hole 44 bored in the first circular ring 30 and in the base 32. It is inserted through the through hole 46. A rotating body 48 is attached to this rotating shaft 42 . Since the second circular ring 36 is always kept parallel to the base 32 (or the first circular ring 30), the rotating shaft 42 can be maintained perpendicular to the base 32 at all times. .
従来、回転軸４２を基部３２に対して垂直に保つために
は回転軸４２にスラスト軸受（不図示）を外嵌させてい
たが、その場合スラスト軸受の長さを長くしないと基部
３２に対する垂直精度を高くし得なかったが、本発明に
係るロータでは基部３２（又は第１の円輪３０）に対し
て第２の円輪３６の平行度を確保しているので本発明に
係るスラス゛トころがり軸受５０は薄く形成することが
できロータ全体をコンパクト化することが可能になって
いる。Conventionally, in order to keep the rotating shaft 42 perpendicular to the base 32, a thrust bearing (not shown) was externally fitted to the rotating shaft 42, but in this case, unless the length of the thrust bearing was made longer, the rotating shaft 42 would not be perpendicular to the base 32. Although the accuracy could not be improved, the rotor according to the present invention ensures the parallelism of the second circular ring 36 with respect to the base 32 (or the first circular ring 30), so the thrust rolling according to the present invention is improved. The bearing 50 can be formed thin and the entire rotor can be made compact.
次に、本発明に係るスラストころがり軸受を用いたモー
タについてまず第３図と共に説明する。Next, a motor using a thrust rolling bearing according to the present invention will be explained with reference to FIG.
同図において、第１の円輪６０が固定部であり、回転子
となる第２の円輪６２との対向面にステータコイル６４
・・・が設けられている。In the same figure, a first circular ring 60 is a fixed part, and a stator coil 64 is provided on a surface opposite to a second circular ring 62 which becomes a rotor.
...is provided.
一方、第２の円輪６２の第１の円輪６０との対向面には
第１及び第２の円輪６０．６２を互いに接近するための
磁力手段と、モータの回転子磁極とを兼ねる永久磁石６
６・・・が固定されている。On the other hand, the surface of the second circular ring 62 facing the first circular ring 60 serves as magnetic force means for bringing the first and second circular rings 60 and 62 closer to each other, and also serves as the rotor magnetic poles of the motor. Permanent magnet 6
6... is fixed.
そして第１及び第２の円輪６０．６２の間には転動手段
である鋼球６８・・・が挾持されている。Steel balls 68, which are rolling means, are held between the first and second circular rings 60, 62.
従って、ステータコイル６４・・・へ通電すると、ステ
ータコイル６４・・・に発生する磁力と永久磁石６６・
・・の磁力との関係で回転子である第２の円輪６２は固
定部である第１の円輪６０に対して回転する。その際前
述のとおり第１の円輪６０と第２の円輪６２がその軸受
軌道７０．７２で鋼球６８・・・を挟着しても点接触な
ので当該部分の摩擦力は第２の円輪６２の回転の妨げる
ものとはならない。このモータの場合、回転子（第２の
円輪６２）の回転を高精度で１の平面内で行なわせるこ
とができる。また、スラストころがり軸受の中にモータ
を形成することができるのでコンパクトなモータにでき
る。実施例では第１の円輪６０を固定部、第２の円輪６
２を回転子としたがこの逆でもよい。また、ステータコ
イル６４・・・を偏平なコアレス型とすれば薄いコンパ
クトなモータを実現できると共に、回転子となる第１の
円輪６０又は第２の円輪６２に直接被回転物を取付けて
回転させてもよい。またステータコイル６４・・・及び
永久磁石６６・・・を第１及び第２の円輪６０．６２の
対向面に設けたが必ずしも対向面でなくてもよく、磁力
により回転子を回転させることができれば第１及び第２
の円輪６０．６２の外周面であってもよい。Therefore, when the stator coils 64... are energized, the magnetic force generated in the stator coils 64... and the permanent magnets 66...
The second circular ring 62, which is a rotor, rotates with respect to the first circular ring 60, which is a fixed part, in relation to the magnetic force. At this time, as mentioned above, even if the first circular ring 60 and the second circular ring 62 sandwich the steel balls 68... in their bearing raceways 70, 72, they are in point contact, so the frictional force at that part is equal to that of the second circular ring 60. This does not impede the rotation of the circular ring 62. In the case of this motor, the rotor (second circular ring 62) can be rotated within one plane with high precision. Furthermore, since the motor can be formed within the thrust rolling bearing, the motor can be made compact. In the embodiment, the first circular ring 60 is a fixed part, and the second circular ring 6 is a fixed part.
2 is used as the rotor, but the reverse may also be used. In addition, if the stator coils 64 are made of a flat coreless type, a thin and compact motor can be realized, and the rotated object can be directly attached to the first circular ring 60 or the second circular ring 62 which becomes the rotor. You can also rotate it. Further, although the stator coils 64... and the permanent magnets 66... are provided on the opposing surfaces of the first and second circular rings 60, 62, they do not necessarily have to be on opposing surfaces, and the rotor can be rotated by magnetic force. If possible, the first and second
It may be the outer peripheral surface of the circular ring 60 or 62.
次にモータの他の実施例について第４図及び第５図と共
に説明する。Next, another embodiment of the motor will be described with reference to FIGS. 4 and 5.
第４図に示す実施例は固定部である第１の円輪８０の中
央に透孔８２が穿設され、回転子である第２の円輪８４
の内底面より垂設された回転輪８６が透孔８２に挿通さ
れ、第１の円輪８０より上方へ突出した例である。この
例では第１の円輪８０は基部（不図示）に固定されてお
り、回転軸８６へ取付けられた回転体８８は回転子であ
る第２の円輪８４の回転と共に回転可能になっている。In the embodiment shown in FIG. 4, a through hole 82 is bored in the center of a first circular ring 80 which is a fixed part, and a second circular ring 84 which is a rotor.
In this example, a rotary ring 86 that is vertically provided from the inner bottom surface of the rotary ring 86 is inserted into the through hole 82 and protrudes upward from the first circular ring 80 . In this example, the first circular ring 80 is fixed to a base (not shown), and the rotating body 88 attached to the rotating shaft 86 is rotatable with the rotation of the second circular ring 84, which is a rotor. There is.
従って、回転体８日を回転軸８６へ直角（第１の円輪８
０に対して平行）に取付けることができれば、回転体８
８を固定部である第１の円輪８０（又は基部）に対して
高い平行度を保って回転させることができる。このモー
タは例えばコンパクトディスクや光ディスクのように高
精度で１の平面内で回転させることが要求される装置に
用いて好適なモータである。Therefore, the rotating body 8 is perpendicular to the rotation axis 86 (the first circular ring 8
0), the rotating body 8
8 can be rotated while maintaining a high degree of parallelism with respect to the first circular ring 80 (or base) that is the fixed part. This motor is suitable for use in devices that are required to rotate within one plane with high precision, such as compact discs and optical discs.
次に、第５図の例について説明する。この例は本発明に
係るモータを２個並設したもので、カセットテープレコ
ーダの駆動装置を例示している。Next, the example shown in FIG. 5 will be explained. In this example, two motors according to the present invention are arranged in parallel, and a driving device for a cassette tape recorder is illustrated.
つまり、第４図に示したものと同じ構造のモータ９０．
９２を基板９４へ取り付けたものである。That is, the motor 90. has the same structure as that shown in FIG.
92 is attached to a substrate 94.
モータ９０．９２をそれぞれ独立して通電することによ
り、回転軸９６．９８をそれぞれ独立して回転させるこ
とができる。特に本発明に係るモータは薄形でコンパク
トに形成可能なのでカセットテープレコーダのような小
型モータを必要とする製品に用いて好適となる。なお、
第４図及び第５図のモータの動作原理は第３図に示すも
のと同一なので説明は省略する。By independently energizing the motors 90,92, the rotating shafts 96,98 can be rotated independently. In particular, since the motor according to the present invention can be formed thin and compact, it is suitable for use in products that require a small motor, such as a cassette tape recorder. In addition,
The operating principle of the motors shown in FIGS. 4 and 5 is the same as that shown in FIG. 3, so a description thereof will be omitted.
以上、本発明の好適な実施例について種々述べて来たが
、本発明は上述の実施例に限定されるのではなく、例え
ば第１の円輪及び第２の円輪にシャフト挿通用の貫通孔
を設けてもよい等、発明の精神を逸脱しない範囲で多く
の改変を施し得るのはもちろんである。Various preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-mentioned embodiments. Of course, many modifications may be made without departing from the spirit of the invention, such as the provision of holes.
（発明の効果）
本発明に係るスラストこがり軸受を用いると、第１の円
輪と第２の円輪とが互いに高い平行度で回転させること
が簡易な構造で可能となる。また、ロータ及びモータと
して用いた場合は、回転する回転体を高精度で１の平面
内で回転させることが可能となる。また、ロータもしく
はモータを特に薄形でコンパクトに形成できるため、様
々な機器に応用することが可能となる等の著効を奏する
。(Effects of the Invention) When the thrust bearing according to the present invention is used, it becomes possible to rotate the first circular ring and the second circular ring with a high degree of parallelism to each other with a simple structure. Furthermore, when used as a rotor and a motor, it is possible to rotate a rotating body within one plane with high precision. In addition, since the rotor or motor can be made particularly thin and compact, it has great effects such as being able to be applied to various devices.
第１図は本発明に係るスラストころがり軸受の実施例を
示した断面図、第２図は本発明に係るスラストころがり
軸受を用いたロータの実施例を示した断面図、第３図は
本発明に係るスラストころがり軸受を用いたモータの実
施例を示した断面図、第４図及び第５図はそのモータの
他の実施例を示した断面図。
１０・・・第１の円輪、 １２・・・第２の円輪、
１６・・・鋼球、 ２４・・・永久磁石、３０・・・第
１の円輪、 ３４・・・永久磁石、３Ｇ・・・第２の円
輪、 ４０・・・鋼球、４２・・・回転軸、 ４８・・
・回転体、６０・・・第１の円輪、 ６２・・・第２の
円輪、６４・・・ステータコイル、 ６６・・・永久磁
石、 ６８・・・鋼球、 ８０・・・第１の円輪、８４
・・・第２の円輪。FIG. 1 is a sectional view showing an embodiment of a thrust rolling bearing according to the present invention, FIG. 2 is a sectional view showing an embodiment of a rotor using a thrust rolling bearing according to the present invention, and FIG. 3 is a sectional view showing an embodiment of a thrust rolling bearing according to the present invention. FIG. 4 and FIG. 5 are cross-sectional views showing other embodiments of the motor using the thrust rolling bearing. 10...first circular ring, 12...second circular ring,
16... Steel ball, 24... Permanent magnet, 30... First circular ring, 34... Permanent magnet, 3G... Second circular ring, 40... Steel ball, 42...・・Rotation axis, 48・・
- Rotating body, 60... First circular ring, 62... Second circular ring, 64... Stator coil, 66... Permanent magnet, 68... Steel ball, 80... No. 1 circle, 84
...Second circle.
Claims (1)
された第２の円輪と、該第１及び第２の円輪との対向面
間に転動可能に配された球体等の転動部材とを具備する
スラストころがり軸受において、 前記第１の円輪及び第２の円輪を相対的に接近するよう
付勢するための磁力手段を設けたことを特徴とするスラ
ストころがり軸受。 ２、少なくとも第１の円輪もしくは第２の円輪の一方を
磁性材料で形成し、前記磁力手段は少なくとも第１の円
輪もしくは第２の円輪の他方に着磁すること、もしくは
少なくとも該他方に固定された磁石であることを特徴と
する請求項１記載のスラストころがり軸受。 ３、前記磁力手段は前記第１の円輪及び第２の円輪に固
定された磁石であることを特徴とする請求項１記載のス
ラストころがり軸受。 ４、請求項１、２又は３のスラストころがり軸受の第１
の円輪及び／もしくは第２の円輪へその回転面に対して
垂直な、回転体を取付けるための回転体取付部を設けた
ことを特徴とするロータ。 ５、請求項１、２又は３のスラストころがり軸受の第１
の円輪と第２の円輪の一方にコイルを設け、他方に磁力
手段を兼ねた永久磁石を設けてなることを特徴とするモ
ータ。[Claims] 1. A first circular ring, a second circular ring rotatably arranged with respect to the first circular ring, and facing the first and second circular rings. In a thrust rolling bearing comprising a rolling member such as a sphere arranged so as to be able to roll between surfaces, a magnetic force for urging the first circular ring and the second circular ring to approach each other relatively. A thrust rolling bearing characterized in that a means is provided. 2. At least one of the first circular ring or the second circular ring is formed of a magnetic material, and the magnetic force means magnetizes at least the other of the first circular ring or the second circular ring, or at least magnetizes the other of the first circular ring or the second circular ring. 2. The thrust rolling bearing according to claim 1, wherein the thrust rolling bearing is a magnet fixed to the other end. 3. The thrust rolling bearing according to claim 1, wherein the magnetic force means is a magnet fixed to the first circular ring and the second circular ring. 4. The first thrust rolling bearing of claim 1, 2 or 3
A rotor characterized in that a rotating body attachment part for attaching a rotating body is provided to the circular ring and/or the second circular ring, which is perpendicular to the rotating surface of the circular ring. 5. The first thrust rolling bearing of claim 1, 2 or 3
A motor characterized in that a coil is provided on one of the circular ring and the second circular ring, and a permanent magnet that also serves as magnetic force means is provided on the other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9848089A JPH02278008A (en) | 1989-04-18 | 1989-04-18 | Thrust ball bearing and rotor and motor using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9848089A JPH02278008A (en) | 1989-04-18 | 1989-04-18 | Thrust ball bearing and rotor and motor using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02278008A true JPH02278008A (en) | 1990-11-14 |
Family
ID=14220816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9848089A Pending JPH02278008A (en) | 1989-04-18 | 1989-04-18 | Thrust ball bearing and rotor and motor using same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02278008A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05164125A (en) * | 1991-12-06 | 1993-06-29 | Nec Gumma Ltd | Bearing for motor |
| JP2002341955A (en) * | 2001-05-17 | 2002-11-29 | Pioneer Electronic Corp | Rotary operation mechanism, music reproducing device using the same |
-
1989
- 1989-04-18 JP JP9848089A patent/JPH02278008A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05164125A (en) * | 1991-12-06 | 1993-06-29 | Nec Gumma Ltd | Bearing for motor |
| JP2002341955A (en) * | 2001-05-17 | 2002-11-29 | Pioneer Electronic Corp | Rotary operation mechanism, music reproducing device using the same |
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