JPH10178758A - Small-sized motor - Google Patents
Small-sized motorInfo
- Publication number
- JPH10178758A JPH10178758A JP8341029A JP34102996A JPH10178758A JP H10178758 A JPH10178758 A JP H10178758A JP 8341029 A JP8341029 A JP 8341029A JP 34102996 A JP34102996 A JP 34102996A JP H10178758 A JPH10178758 A JP H10178758A
- Authority
- JP
- Japan
- Prior art keywords
- lubricating oil
- small
- bearing
- motor
- cooling fan
- 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
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
- F16C2380/00—Electrical apparatus
- F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
Landscapes
- Sliding-Contact Bearings (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、電子機器の実装部
品の冷却ファンや、その他の機器の駆動源として用いら
れ、軸受け部に潤滑油補給部材を有する構成の小型電動
機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small-sized electric motor which is used as a cooling fan for a component mounted on an electronic device or a drive source for other devices and has a lubricating oil supply member at a bearing portion.
【０００２】[0002]
【従来の技術】一般に小型電動機には、小型、薄型化の
ためにすべり軸受けが設けられている。2. Description of the Related Art Generally, small motors are provided with slide bearings for reducing the size and thickness.
【０００３】以下に従来のすべり軸受けを設けた小型電
動機について説明する。図３は従来の小型電動機を用い
た冷却ファンの断面図である。図３において１は小型電
動機の固定子であり、その内底の中央に軸受け支持筒２
を突設している。この軸受け支持筒２の外周に駆動コイ
ル３を設けて環状に固定子磁極４を形成してあり、前記
環状の固定子磁極４の外側には環状に回転子磁極５が位
置し、この回転子磁極５を羽根６に取りつけている。前
記羽根６のセンターには回転軸７を取りつけてあり、回
転軸７は軸受け支持筒２内において２つのすべり軸受け
８により回転自在に支持されている。なお、すべり軸受
け８は、その外周を軸受け支持筒２の内側に固定してい
る。[0003] A conventional small motor provided with a slide bearing will be described below. FIG. 3 is a sectional view of a cooling fan using a conventional small electric motor. In FIG. 3, reference numeral 1 denotes a stator of a small electric motor.
Is protruding. A drive coil 3 is provided on the outer periphery of the bearing support cylinder 2 to form a stator magnetic pole 4 in an annular shape. The magnetic pole 5 is attached to the blade 6. A rotary shaft 7 is attached to the center of the blade 6, and the rotary shaft 7 is rotatably supported by two slide bearings 8 in the bearing support cylinder 2. The outer periphery of the slide bearing 8 is fixed inside the bearing support cylinder 2.
【０００４】上記構成において、駆動コイル３に通電す
ることにより回転磁界が生じ、回転子磁極５を設けた羽
根６は回転軸７を支軸として回転する。前記回転軸７は
すべり軸受け８で回転自在に支持されているので、自由
に回転できる。In the above configuration, when a current is applied to the drive coil 3, a rotating magnetic field is generated, and the blades 6 provided with the rotor magnetic poles 5 rotate about the rotating shaft 7 as a support shaft. Since the rotating shaft 7 is rotatably supported by the slide bearing 8, it can rotate freely.
【０００５】図４は従来の他の例の小型電動機を用いた
冷却ファンの断面図であり、このものは、図３の構成に
おける２つのすべり軸受け８間に、スポンジなど保液性
をもつ潤滑油補給部材９を設けたもので、潤滑油の補給
によって軸受け部の磨耗を抑え、小型電動機の寿命を伸
ばすようにしている。FIG. 4 is a cross-sectional view of a cooling fan using a small motor of another conventional example. This cooling fan is provided between two sliding bearings 8 in the configuration of FIG. The oil supply member 9 is provided to suppress wear of the bearing portion by supplying lubricating oil, thereby extending the life of the small electric motor.
【０００６】図５は従来の他の例の小型電動機を用いた
冷却ファンの断面図であり、このものは、図４の構成に
おける軸受け支持筒２の先端に板状の油止め１０を設け
たものであり、回転軸７を伝わって潤滑油が流れ出るの
を防ぎ、小型電動機の寿命を伸ばすようにしている。FIG. 5 is a cross-sectional view of a cooling fan using a small motor of another example of the related art, in which a plate-shaped oil stopper 10 is provided at the tip of the bearing support cylinder 2 in the configuration of FIG. The lubricating oil is prevented from flowing along the rotating shaft 7 to extend the life of the small motor.
【０００７】なお、図６は前記従来のすべり軸受け８の
断面を示している。FIG. 6 shows a cross section of the conventional slide bearing 8.
【０００８】[0008]
【発明が解決しようとする課題】ところで近年、携帯用
パーソナルコンピュータ等では、小型、薄型化と高機能
化が急激に進んでおり、これに伴い内蔵のＣＰＵの発熱
が増大し、ＣＰＵをはじめ内部部品の冷却が必須になっ
てきている。よって、これに搭載される冷却ファンに対
しては、小型、薄型で、かつ、高温下での長寿命化が強
く求められてきている。しかしながら、前記従来の小型
電動機を持つ冷却ファンでは、小型、薄型化と高温下で
の長寿命という問題を解決することは困難であった。In recent years, portable personal computers and the like have been rapidly becoming smaller, thinner, and more sophisticated. As a result, the heat generated by the built-in CPU increases, and the CPU and other internal Cooling of parts is becoming essential. Therefore, there is a strong demand for a cooling fan mounted thereon to be small, thin, and have a long life at high temperatures. However, it is difficult for the cooling fan having the conventional small motor to solve the problems of small size, thinness, and long life at high temperatures.
【０００９】本発明は上記従来の問題点を解決するもの
で、小型、薄型でありながら、高温下での長寿命を達成
することができる冷却ファン用等の小型電動機を提供す
ることを目的とする。An object of the present invention is to solve the above-mentioned conventional problems, and an object of the present invention is to provide a small electric motor for a cooling fan or the like which is small and thin and can achieve a long life at a high temperature. I do.
【００１０】[0010]
【課題を解決するための手段】本発明は前記目的を達成
するため、軸受け支持筒内において回転軸を回転支持す
る２つのすべり軸受け間に潤滑油補給部材を設け、回転
軸の先端部にスラストパイプを設け、一部が前記スラス
トパイプを覆う形状のシールドピースを軸受け支持筒に
固定し、前記すべり軸受けの外周に溝を形成した小型電
動機の構成とする。According to the present invention, in order to achieve the above object, a lubricating oil supply member is provided between two slide bearings which rotatably support a rotary shaft in a bearing support cylinder, and a thrust bearing is provided at the tip of the rotary shaft. A small electric motor is provided in which a pipe is provided, a shield piece having a shape partially covering the thrust pipe is fixed to a bearing support cylinder, and a groove is formed on the outer periphery of the slide bearing.
【００１１】本発明によれば、潤滑油補給部材から供給
された潤滑油が潤滑油補給部材に回収され、したがっ
て、すべり軸受けを使用して小型、薄型でありながら、
潤滑油を長く使用できることから、高温下での長寿命を
達成する冷却ファン用等の小型電動機とすることができ
る。According to the present invention, the lubricating oil supplied from the lubricating oil replenishing member is collected by the lubricating oil replenishing member.
Since the lubricating oil can be used for a long time, a small electric motor for a cooling fan or the like that achieves a long life at high temperatures can be obtained.
【００１２】[0012]
【発明の実施の形態】本発明の請求項１に記載の発明
は、軸受け支持筒内に回転軸と、前記回転軸を回転支持
する２つのすべり軸受けを設けた構成であって、前記２
つのすべり軸受け間に潤滑油補給部材を設け、回転軸の
先端部に潤滑油を外周方向に飛散させるスラストパイプ
を設け、一部が前記スラストパイプを覆う形状のシール
ドピースを軸受け支持筒に固定し、前記すべり軸受けの
外周に潤滑油還流用の溝を形成した小型電動機であり、
潤滑油補給部材から供給された潤滑油が回転軸の先端に
おいてスラストパイプによって外周方向に飛散したの
ち、シールドピースで外部に流れ出るのを阻止され、す
べり軸受けの外周の溝を還流して潤滑油補給部材に回収
され、小型、薄型でありながら、高温下での長寿命を達
成するという作用を有する。DETAILED DESCRIPTION OF THE INVENTION The invention according to claim 1 of the present invention has a structure in which a rotating shaft and two slide bearings for rotatingly supporting the rotating shaft are provided in a bearing supporting cylinder.
A lubricating oil supply member is provided between the two slide bearings, a thrust pipe for scattering the lubricating oil in the outer peripheral direction is provided at the tip of the rotating shaft, and a shield piece partially covering the thrust pipe is fixed to the bearing support cylinder. A small motor having a groove for lubricating oil recirculation formed on the outer periphery of the slide bearing,
After the lubricating oil supplied from the lubricating oil supply member is scattered in the outer peripheral direction by the thrust pipe at the tip of the rotating shaft, it is prevented from flowing out to the outside by the shield piece, and the outer peripheral groove of the slide bearing is returned to supply the lubricating oil. It has the effect of achieving long life at high temperatures while being small and thin, being collected by a member.
【００１３】以下、本発明の小型電動機の実施の形態を
図面を参照して説明する。 （実施の形態１）図１は本発明の実施の形態１の小型電
動機を用いた冷却ファンの断面図、図２は同小型電動機
におけるすべり軸受けの断面図である。An embodiment of the small motor of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 is a sectional view of a cooling fan using a small electric motor according to Embodiment 1 of the present invention, and FIG. 2 is a sectional view of a slide bearing in the small electric motor.
【００１４】図１において、１は固定子、２は軸受け支
持筒、３は駆動コイル、４は固定子磁極、５は回転子磁
極、６は羽根、７は回転軸、８はすべり軸受け、９は潤
滑油補給部材であり、これらの各構成部材は前述の図４
の小型電動機と同じ構成となっており、その説明は省略
する。In FIG. 1, 1 is a stator, 2 is a bearing support cylinder, 3 is a driving coil, 4 is a stator magnetic pole, 5 is a rotor magnetic pole, 6 is a blade, 7 is a rotating shaft, 8 is a sliding bearing, 9 is a sliding bearing, Is a lubricating oil supply member, and these constituent members are the same as those in FIG.
Has the same configuration as that of the small electric motor described above, and a description thereof will be omitted.
【００１５】この実施の形態１の小型電動機の特徴は、
図４に示す２つのすべり軸受け８間に潤滑油補給部材９
を備えた構成において、回転軸７の先端にフランジ１１
を持つスラストパイプ１２を設けるとともに、このスラ
ストパイプ１２の一部を覆う形状のシールドピース１３
を軸受け支持筒２の先端部に設け、さらに図２に示すよ
うに、すべり軸受け８の外周の複数箇所に、軸方向の還
流用の溝１４を設けた構成にある。The features of the small motor according to the first embodiment are as follows.
A lubricating oil supply member 9 is provided between the two slide bearings 8 shown in FIG.
In the configuration provided with a flange 11
A thrust pipe 12 having a shape and a shield piece 13 shaped to cover a part of the thrust pipe 12 are provided.
Is provided at the distal end of the bearing support cylinder 2, and as shown in FIG. 2, axial return grooves 14 are provided at a plurality of locations on the outer periphery of the slide bearing 8.
【００１６】以上のように構成された小型電動機を用い
た冷却ファンについて、以下、その動作を説明する。The operation of the cooling fan using the small motor configured as described above will be described below.
【００１７】駆動コイル３に通電することにより回転磁
界が生じ、回転子磁極５を設けた羽根６は回転軸７を支
軸として回転する。前記回転軸７はすべり軸受け８で回
転自在に支持されているので、自由に回転できる。When a current is applied to the drive coil 3, a rotating magnetic field is generated, and the blades 6 provided with the rotor magnetic poles 5 rotate around the rotating shaft 7 as a support shaft. Since the rotating shaft 7 is rotatably supported by the slide bearing 8, it can rotate freely.
【００１８】回転軸７が回転すると、すべり軸受けおよ
び潤滑油補給部材９より潤滑油が回転軸７を伝わって先
端、すなわち羽根６側に流れ出す。流れ出た潤滑油はス
ラストパイプ１２まで達した時点で、遠心力によりフラ
ンジ１１より外周方向に振り飛ばされる。振り飛ばされ
た潤滑油はシールドピース１３により受け止められ、さ
らにすべり軸受け８に設けた還流用の溝１４を通り、潤
滑油補給部材９に回収される。When the rotary shaft 7 rotates, the lubricating oil flows from the slide bearing and the lubricating oil supply member 9 along the rotary shaft 7 and flows out to the tip, that is, to the blade 6 side. When the lubricating oil that has flowed out reaches the thrust pipe 12, it is shaken off from the flange 11 in the outer peripheral direction by centrifugal force. The lubricating oil that has been shaken off is received by the shield piece 13, passes through the recirculation groove 14 provided in the slide bearing 8, and is collected by the lubricating oil supply member 9.
【００１９】以上のように本実施の形態１では、スラス
トパイプ１２、シールドピース１３を設けるとともにす
べり軸受け８に還流用の溝１４を設けたので、潤滑油が
回収されてその減少を抑え、したがって小型、薄型であ
っても、高温下で長寿命の小型電動機を実現できる。な
お、前記説明では羽根を備えた冷却ファンについてであ
るが、本発明は冷却ファンに限られるものではなく、他
の機器駆動用の小型電動機に適用できることはいうまで
もない。As described above, in the first embodiment, since the thrust pipe 12 and the shield piece 13 are provided and the groove 14 for recirculation is provided in the slide bearing 8, the lubricating oil is recovered and its decrease is suppressed. Even if the motor is small and thin, a small motor having a long life at high temperatures can be realized. In the above description, the cooling fan having the blades is described. However, the present invention is not limited to the cooling fan, and it is needless to say that the present invention can be applied to a small electric motor for driving other devices.
【００２０】[0020]
【発明の効果】以上の説明より明らかなように、本発明
によればすべり軸受けを備え、かつ、その軸受け部に潤
滑油補給部材を設けた構成において、スラストパイプ、
シールドピースを設けるとともにすべり軸受けに還流用
の溝を設けたので、潤滑油が回収されてその減少を抑
え、小型、薄型であって、高温下でも長寿命の小型電動
機とすることができる。As is apparent from the above description, according to the present invention, in the configuration in which the sliding bearing is provided and the lubricating oil supply member is provided in the bearing portion, the thrust pipe,
The provision of the shield piece and the provision of the recirculation groove in the slide bearing allows the lubricating oil to be collected and suppressed from decreasing, thereby making it possible to provide a small, thin, small-sized electric motor having a long life even at high temperatures.
【図１】本発明の実施の形態１の小型電動機を用いた冷
却ファンの断面図FIG. 1 is a cross-sectional view of a cooling fan using a small electric motor according to a first embodiment of the present invention.
【図２】同小型電動機におけるすべり軸受けの断面図FIG. 2 is a sectional view of a slide bearing in the small motor.
【図３】従来の小型電動機を用いた冷却ファンの断面図FIG. 3 is a sectional view of a cooling fan using a conventional small motor.
【図４】従来の他の例の小型電動機を用いた冷却ファン
の断面図FIG. 4 is a cross-sectional view of a cooling fan using a small motor of another conventional example.
【図５】従来の他の例の小型電動機を用いた冷却ファン
の断面図FIG. 5 is a cross-sectional view of a cooling fan using another conventional small motor.
【図６】同小型電動機におけるすべり軸受けの断面図FIG. 6 is a sectional view of a slide bearing in the small electric motor.
１ 固定子 ２ 軸受け支持筒 ３ 駆動コイル ４ 固定子磁極 ５ 回転子磁極 ６ 羽根 ７ 回転軸 ８ すべり軸受け ９ 潤滑油補給部材 １１ フランジ １２ スラストパイプ １３ シールドピース １４ 溝 DESCRIPTION OF SYMBOLS 1 Stator 2 Bearing support cylinder 3 Drive coil 4 Stator magnetic pole 5 Rotor magnetic pole 6 Blade 7 Rotating shaft 8 Sliding bearing 9 Lubricating oil supply member 11 Flange 12 Thrust pipe 13 Shield piece 14 Groove
Claims (1)
回転支持する２つのすべり軸受けを設けた構成であっ
て、前記２つのすべり軸受け間に潤滑油補給部材を設
け、回転軸の先端部に潤滑油を外周方向に飛散させるス
ラストパイプを設け、一部が前記スラストパイプを覆う
形状のシールドピースを軸受け支持筒に固定し、前記す
べり軸受けの外周に潤滑油還流用の溝を形成したことを
特徴とする小型電動機。1. A structure in which a rotary shaft and two slide bearings for rotatably supporting the rotary shaft are provided in a bearing support cylinder, wherein a lubricating oil supply member is provided between the two slide bearings. A thrust pipe that scatters the lubricating oil in the outer peripheral direction is provided at the tip end, a shield piece partially shaped to cover the thrust pipe is fixed to the bearing support cylinder, and a groove for lubricating oil recirculation is formed on the outer periphery of the slide bearing. A small electric motor characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34102996A JP3708263B2 (en) | 1996-12-20 | 1996-12-20 | Small electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34102996A JP3708263B2 (en) | 1996-12-20 | 1996-12-20 | Small electric motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10178758A true JPH10178758A (en) | 1998-06-30 |
| JP3708263B2 JP3708263B2 (en) | 2005-10-19 |
Family
ID=18342573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34102996A Expired - Fee Related JP3708263B2 (en) | 1996-12-20 | 1996-12-20 | Small electric motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3708263B2 (en) |
-
1996
- 1996-12-20 JP JP34102996A patent/JP3708263B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP3708263B2 (en) | 2005-10-19 |
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