JPH02266844A - Motor - Google Patents
MotorInfo
- Publication number
- JPH02266844A JPH02266844A JP8450789A JP8450789A JPH02266844A JP H02266844 A JPH02266844 A JP H02266844A JP 8450789 A JP8450789 A JP 8450789A JP 8450789 A JP8450789 A JP 8450789A JP H02266844 A JPH02266844 A JP H02266844A
- Authority
- JP
- Japan
- Prior art keywords
- spacer
- rotor
- bearing
- rotary shaft
- rotating 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.)
- Granted
Links
- 125000006850 spacer group Chemical group 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 12
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 238000004804 winding Methods 0.000 abstract description 4
- 230000036316 preload Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- -1 polyethylene Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明はフロッピーディスク等の磁気記録媒体を駆動
し、含油焼結メタル軸受を使用した電動機に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electric motor that drives a magnetic recording medium such as a floppy disk and uses an oil-impregnated sintered metal bearing.
第４図は例えば実開昭６２−１０４５４８号公報に示さ
れた従来の電動機を示す断面図であり、図において（１
）は中央部に保持部（２）を設けるとともに、その周側
に通風路（３）を設けたケーシング、（４）は上記保持
部材（２）に固着され略円筒状に形成された軸受ボルダ
、（５）はこの軸受ホルダの外周側壁に固着された固定
子鉄心（６）に巻線（７）を巻装した固定子、（８）は
上記軸受ホルダ（４）に嵌着された含油焼結メタル軸受
、（９）はこの軸受に回動可能に嵌合された回転軸、α
〔はこの回転軸にブツシュ（１１）を介して固着された
ロータヨーク（１２）に上記固定子（５］の周側と対向
するマグネット（１３）を設けた回転子で、ロータヨー
ク（１２）の周側には羽根（１４）が設けられている。FIG. 4 is a sectional view showing a conventional electric motor disclosed in, for example, Japanese Utility Model Application Publication No. 62-104548.
) is a casing having a holding part (2) in the center and a ventilation passage (3) around the periphery, and (4) is a bearing bolt fixed to the holding member (2) and formed into a substantially cylindrical shape. , (5) is a stator in which a winding (7) is wound around a stator core (6) fixed to the outer peripheral side wall of this bearing holder, and (8) is an oil-impregnated stator fitted in the bearing holder (4). A sintered metal bearing, (9) is a rotating shaft rotatably fitted to this bearing, α
[ is a rotor in which a magnet (13) facing the circumferential side of the stator (5) is provided on a rotor yoke (12) fixed to the rotating shaft via a bush (11), and the circumference of the rotor yoke (12) is Wings (14) are provided on the sides.
（１５） （１６）は上記軸受ホルダ（４）のブツシュ
（１１）測量口部に嵌入されたワッシャおよびフェルト
、（１７）は上記軸受ホルダ４）の保持部（２）測量口
部を密封閉塞するとともに、回転軸（９）の端部を支持
する潤滑シート、（１８）はこの潤滑シートを保持し軸
受ホルダ（イ）に圧入固着された金属ワッシャ、（１９
）は上記回転軸（９）に取着された止めリング、（２０
）はこの止めリングと軸受（ａとの間に介在されたスペ
ーサ、（２１）は銘板である。(15) (16) is a washer and felt fitted into the survey opening of the bush (11) of the bearing holder (4), and (17) seals and closes the holding part (2) of the survey opening of the bearing holder (4). At the same time, a lubricating sheet (18) supporting the end of the rotating shaft (9) is a metal washer (19) that holds this lubricating sheet and is press-fitted into the bearing holder (a).
) is a retaining ring attached to the rotating shaft (9), (20
) is a spacer interposed between this retaining ring and the bearing (a), and (21) is a nameplate.
従来の電動機は上記のように構成され、固定子ｆ５１の
巻線（７）に通電することにより磁界が形成され、マグ
ネット（１３）との磁気作用により回転子叫は回転軸（
９）を中心に回転するようになっている。The conventional electric motor is constructed as described above, and a magnetic field is formed by energizing the winding (7) of the stator f51, and the rotor's vibration is caused by the magnetic action with the magnet (13).
9).
上記のような従来の電動機では、回転軸（９）に止めリ
ング（１９）を取着し、この止めリング（１９）と軸受
（８１との間にスペーサ〈２０）を介在させているため
、回転軸（９）の回転時止めリング（１９）とスペーサ
（２０）との間で摩擦が生じ、この摩擦抵抗により損失
が大きくなるという課題があった。In the conventional electric motor as described above, a retaining ring (19) is attached to the rotating shaft (9), and a spacer (20) is interposed between the retaining ring (19) and the bearing (81). There has been a problem in that friction occurs between the stop ring (19) and the spacer (20) during rotation of the rotating shaft (9), and this frictional resistance increases loss.
この発明は係る課題を解決するためになされたもので、
回転軸の回転に伴う摩擦抵抗を低減し、損失の少ない電
動機を得ることを目的とするものである。This invention was made to solve the problem,
The purpose of this invention is to reduce the frictional resistance associated with the rotation of the rotating shaft and to obtain an electric motor with less loss.
この発明に係る電動機は、スペーサを回転子に係合させ
回転子と連動するようにしたものである。In the electric motor according to the present invention, the spacer is engaged with the rotor to operate in conjunction with the rotor.
この発明においては、スペーサが回転子に係合され回転
子と連動するようにしたから、スペーサと回転子との間
には摩擦が生ずることがなく、回転時の損失が低減され
る。In this invention, since the spacer is engaged with the rotor and moves in conjunction with the rotor, no friction occurs between the spacer and the rotor, and loss during rotation is reduced.
第１図および第２図はこの発明の一実施例を示す図で、
Ｇ７１）〜叫、（１２）および（１３）は上記従来例と
同一または相当部分を示し、（２２）はロータヨーク（
１２）と回転軸（９）を固着するねじ、（２３）は回転
軸（９）に固着されたフロッピーディスク等の磁気記録
媒体を支持する支持具で、上方に突出して形成した係合
ビン（２４）が設けられている。（２５）は回転軸（９
）に嵌合されロータヨーク（１２） １ｍ壁を押圧する
予圧ばねで、中央部に軸嵌合孔（２６）を形成し、周囲
にばね部（２７）を突設するとともに、下方へ折り曲げ
た係合片（２８）が設けられている。 （２９）はこの
予圧ばねと含油焼結メタル軸受矧との間および支持具（
２３）と含油焼結メタル軸受（ａとの間に介在された低
摩擦のスペーサで、４フツ化ポリエチレン、ＰＥＥＫ
（ポリエーテルエーテルケトン）、ポリエチレン等を成
分とする樹脂あるいは鉄等を成分とする金属で形成され
、周側に上記係合片（２８）および係合ビン（２４）が
係合する係合突部（３０）が設けられている。（３１）
は軸受（へ）の端部にスペーサ（２９）に対応し摺動面
積が小さくなるよう形成した段部、（３２）は回路基板
である。FIG. 1 and FIG. 2 are diagrams showing one embodiment of this invention,
G71) to (12) and (13) indicate the same or equivalent parts as the above conventional example, and (22) indicates the rotor yoke (
12) and a screw that fixes the rotating shaft (9), and (23) is a support that supports a magnetic recording medium such as a floppy disk that is fixed to the rotating shaft (9). 24) is provided. (25) is the rotation axis (9
) is fitted into the rotor yoke (12) and presses against the 1m wall.The preload spring has a shaft fitting hole (26) formed in the center, a spring part (27) protruding around the periphery, and a downwardly bent engagement spring. A joining piece (28) is provided. (29) is between this preload spring and the oil-impregnated sintered metal bearing shaft and the support (
23) A low-friction spacer interposed between the oil-impregnated sintered metal bearing (a) made of tetrafluoroethylene polyethylene, PEEK
(polyetheretherketone), a resin containing polyethylene, etc., or a metal containing iron, etc., and an engagement protrusion on the circumferential side with which the engagement piece (28) and the engagement pin (24) engage. A section (30) is provided. (31)
(32) is a step formed at the end of the bearing to correspond to the spacer (29) and to reduce the sliding area.
上記のように構成された電動機においては、固定子（５
）の巻線（７）に通電することにより磁界が形成され、
マグネット（１３）との磁気作用により回転子（１０）
は回転軸（９）を中心に回転する。このとき予圧ばね（
２５）はロータヨーク（１２）と軸受矧の両方を押圧し
、予圧ばね（２５）の係合片（２８）はスペーサ（２９
）の１系合突部（３０）と係合し、支持具（２３）の係
合ビン（２４）はスペーサ（２９）の係合突部（３０）
と係合して回転軸（９）とともに連動して回転し、スペ
ーサ（２９）は含油焼結メタル軸受（へ）と摺動する。In the electric motor configured as above, the stator (5
) A magnetic field is formed by energizing the winding (7) of
Rotor (10) due to magnetic action with magnet (13)
rotates around the rotation axis (9). At this time, the preload spring (
25) presses both the rotor yoke (12) and the bearing groove, and the engagement piece (28) of the preload spring (25) presses the spacer (29).
), and the engagement pin (24) of the support (23) engages with the engagement protrusion (30) of the spacer (29).
The spacer (29) is engaged with and rotates in conjunction with the rotating shaft (9), and the spacer (29) slides on the oil-impregnated sintered metal bearing.
これにより含油焼結メタル軸受（８の油を介在して回転
することになり摩擦抵抗は低いものとなる。As a result, the oil-impregnated sintered metal bearing (8) rotates through the oil, resulting in low frictional resistance.
なお、第３図に示すように予圧ばね（２５）と支持具（
２３）に係合四部（３３）を設けるとともに、スペーサ
（２９）にごの係合凹部（３３）と係合する係合片（３
４）を設け、スペーサ（２９）と予圧ばね（２５）およ
び支持具（２３）を係合するようにしても同様の効果が
期待できる。In addition, as shown in Fig. 3, the preload spring (25) and the support (
23) is provided with four engaging parts (33), and an engaging piece (3) that engages with the engaging recess (33) of the spacer (29) is provided.
4) and the spacer (29) is engaged with the preload spring (25) and the support (23), the same effect can be expected.
また、予圧ばね（２５）を使用しない場合には、回転子
αｅの一部であるロータヨーク（１２）に係合片または
係合凹部を設け、スペーサ（２９）と係合しても同様の
効果がある。In addition, if the preload spring (25) is not used, the same effect can be obtained by providing an engagement piece or an engagement recess in the rotor yoke (12), which is a part of the rotor αe, and engaging it with the spacer (29). There is.
この発明は以上説明したとおり、軸受ホルダと、この軸
受ホルダに固着された固定子と、上記軸受ホルダに嵌着
された含油焼結メタル軸受と、この軸受に回動可能に嵌
合された回転軸と、この回転軸に固着され上記固定子と
対向するマグネットを有する回転子と、上記軸受と上記
回転子との間に設けられたスペーサとを備え、上記スペ
ーサを上記回転子に係合させ上記回転子と連動するよう
にしたことにより、回転軸の回転に伴う摩擦抵抗が低減
し、損失の少ないものとなる効果がある。As explained above, the present invention includes a bearing holder, a stator fixed to the bearing holder, an oil-impregnated sintered metal bearing fitted to the bearing holder, and a rotating shaft rotatably fitted to the bearing. A rotor having a shaft, a rotor having a magnet fixed to the rotating shaft and facing the stator, and a spacer provided between the bearing and the rotor, the spacer being engaged with the rotor. By interlocking with the rotor, the frictional resistance accompanying the rotation of the rotating shaft is reduced, resulting in less loss.
第１図はこの発明の一実施例を示す断面図、第２図は同
じくその要部分解斜視図、第３図はこの発明の他の実施
例を示す要部分解斜視図、第４図は従来の電動機を示す
断面図である。
なお、各図中同一符号は同一または相当部分を示し、４
）は軸受ホルダ、（５）は固定子、（ａは含油焼結メタ
ル軸受、（９）は回転軸、叫は回転子、（１３）はマグ
ネット、（２９）はスペーサである。FIG. 1 is a sectional view showing one embodiment of the present invention, FIG. 2 is an exploded perspective view of the main part thereof, FIG. 3 is an exploded perspective view of the main part showing another embodiment of the invention, and FIG. FIG. 2 is a sectional view showing a conventional electric motor. In addition, the same reference numerals in each figure indicate the same or corresponding parts, and 4
) is a bearing holder, (5) is a stator, (a is an oil-impregnated sintered metal bearing, (9) is a rotating shaft, is a rotor, (13) is a magnet, and (29) is a spacer.
Claims (1)
上記軸受ホルダに嵌着された含油焼結メタル軸受と、こ
の軸受に回動可能に嵌合された回転軸と、この回転軸に
固着され上記固定子と対向するマグネットを有する回転
子と、上記軸受と上記回転子との間に設けられたスペー
サとを備え、上記スペーサを上記回転子に係合させ上記
回転子と連動するようにした電動機。a bearing holder, a stator fixed to the bearing holder,
an oil-impregnated sintered metal bearing fitted in the bearing holder; a rotating shaft rotatably fitted in the bearing; a rotor having a magnet fixed to the rotating shaft and facing the stator; An electric motor comprising a spacer provided between a bearing and the rotor, the spacer being engaged with the rotor to operate in conjunction with the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1084507A JPH0746891B2 (en) | 1989-04-03 | 1989-04-03 | Electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1084507A JPH0746891B2 (en) | 1989-04-03 | 1989-04-03 | Electric motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02266844A true JPH02266844A (en) | 1990-10-31 |
| JPH0746891B2 JPH0746891B2 (en) | 1995-05-17 |
Family
ID=13832559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1084507A Expired - Lifetime JPH0746891B2 (en) | 1989-04-03 | 1989-04-03 | Electric motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0746891B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6268439U (en) * | 1985-10-17 | 1987-04-28 | ||
| JPS63100979U (en) * | 1986-12-19 | 1988-06-30 |
-
1989
- 1989-04-03 JP JP1084507A patent/JPH0746891B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6268439U (en) * | 1985-10-17 | 1987-04-28 | ||
| JPS63100979U (en) * | 1986-12-19 | 1988-06-30 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0746891B2 (en) | 1995-05-17 |
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