JP3381356B2 - Motor fan - Google Patents
Motor fanInfo
- Publication number
- JP3381356B2 JP3381356B2 JP01932394A JP1932394A JP3381356B2 JP 3381356 B2 JP3381356 B2 JP 3381356B2 JP 01932394 A JP01932394 A JP 01932394A JP 1932394 A JP1932394 A JP 1932394A JP 3381356 B2 JP3381356 B2 JP 3381356B2
- Authority
- JP
- Japan
- Prior art keywords
- fan
- rotor
- motor fan
- spacer
- ball bearing
- 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 - Fee Related
Links
- 125000006850 spacer group Chemical group 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims description 7
- 239000012212 insulator Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 102220057728 rs151235720 Human genes 0.000 description 1
Landscapes
- Support Of The Bearing (AREA)
- Motor Or Generator Frames (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は家電機器や空調機器に内
蔵される送風または冷却用のモータファンに関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blower or cooling motor fan incorporated in home appliances and air conditioners.
【０００２】[0002]
【従来の技術】近年、家電機器や空調機器に内蔵される
送風または冷却用のモータファンにおいて、モータファ
ンの低コスト化，小型化が強く要望されている。2. Description of the Related Art In recent years, there has been a strong demand for cost reduction and downsizing of motor fans for air blowers or cooling fans incorporated in home appliances and air conditioners.
【０００３】以下に従来のモータファンについて説明す
る。図２（ａ）は第一の例の従来のモータファンの構造
断面図を示すものである。図２（ａ）において、１は鉄
心、２は絶縁体、３は巻線、４は回転子、４１は回転
軸、５はボールベアリング、６はハウジング、７はファ
ン、８はＣリング、９はコイルばねである。A conventional motor fan will be described below. FIG. 2A shows a structural cross-sectional view of the conventional motor fan of the first example. In FIG. 2A, 1 is an iron core, 2 is an insulator, 3 is a winding wire, 4 is a rotor, 41 is a rotary shaft, 5 is a ball bearing, 6 is a housing, 7 is a fan, 8 is a C ring, and 9 is. Is a coil spring.
【０００４】第一の例の従来のモータファンは、前記回
転軸４１に段付加工および溝切り加工をほどこしている
ことにより前記ファン７の位置決めを段付部で行い、か
つ前記ボールベアリング５への適正与圧の位置を溝切り
部にＣリング８を取り付けて決めている構成となってい
る。In the conventional motor fan of the first example, the rotation shaft 41 is stepped and grooved so that the fan 7 is positioned at the stepped portion and the ball bearing 5 is positioned. The C-ring 8 is attached to the groove cut portion to determine the position of the proper pressurization.
【０００５】図２（ｂ）は第二の例の従来のモータファ
ンの構造断面図を示すものである。図２（ｂ）におい
て、１は鉄心、２は絶縁体、３は巻線、４は回転子、４
２は回転軸、５はボールベアリング、６はハウジング、
７はファン、８はＣリング、９はコイルばねである。FIG. 2B is a structural sectional view of a conventional motor fan of the second example. In FIG. 2B, 1 is an iron core, 2 is an insulator, 3 is a winding wire, 4 is a rotor, 4
2 is a rotary shaft, 5 is a ball bearing, 6 is a housing,
7 is a fan, 8 is a C ring, and 9 is a coil spring.
【０００６】第二の例の従来のモータファンは、前記回
転軸４２に溝切り加工を２ヵ所ほどこし、それぞれにＣ
リング８を取り付けることにより前記ファン７の位置決
め、および前記ボールベアリング５への適正与圧の位置
を決めている構成となっている。In the conventional motor fan of the second example, the rotary shaft 42 is subjected to grooving at two places, and a C-shape is formed on each of them.
The ring 8 is attached to determine the position of the fan 7 and the position of proper pressurization to the ball bearing 5.
【０００７】[0007]
【発明が解決しようとする課題】しかしながら上記従来
の構成において、第一の例では回転軸４１に段付加工を
ほどこす必要があるため軸径が比較的太くなりモータフ
ァンの小型化を妨げ、かつＣリング８を取り付けるため
の溝切り加工をほどこす必要があるためコストアップに
なるという問題点を有し、また第二の例では回転軸４２
にＣリング８を取り付けるための溝切り加工を２ヵ所ほ
どこす必要があるため、構造が複雑でかつ比較的コスト
アップになるという問題点を有していた。However, in the above-mentioned conventional structure, in the first example, since the rotary shaft 41 needs to be stepped, the shaft diameter becomes relatively large, which hinders downsizing of the motor fan. Moreover, there is a problem that the cost is increased because it is necessary to perform a groove cutting process for mounting the C ring 8, and in the second example, the rotating shaft 42 is used.
Since it is necessary to perform grooving for attaching the C ring 8 to 2 places, the structure is complicated and the cost is relatively increased.
【０００８】本発明は上記従来の問題点を解決するもの
であり、ファンの位置決め，ボールベアリングへの適正
与圧の手段を簡素に、かつ安価に実現できる優れたモー
タファンを提供することを目的とする。The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide an excellent motor fan in which means for positioning the fan and appropriately pressurizing the ball bearing can be realized simply and at low cost. And
【０００９】[0009]
【課題を解決するための手段】これらの目的を達成する
ために本発明請求項１のモータファンは、複数のスロッ
トを有する鉄心と、前記鉄心のスロットに絶縁層を介し
てほどこされた巻線とを有する固定子と、前記固定子の
磁極面と対抗して配置される外転型の回転子と、前記回
転子を回転自在に保持する２個のボールベアリングと、
前記ボールベアリングを前記固定子に保持するハウジン
グと、前記回転子の回転軸に挿入されるコイルばねと、
前記回転子の回転軸に保持されるファンとを備え、前記
回転子と前記ボールベアリングとの間にコイルばねを配
置し、かつ他方のボールベアリングと前記ファンとの間
で２個のボールベアリングへの適正与圧の位置に筒状の
スペーサを回転軸に圧入等で固定する構成を有してい
る。In order to achieve these objects, a motor fan according to a first aspect of the present invention is an iron core having a plurality of slots, and a winding provided in the slots of the iron core through an insulating layer. A rotor having a rotor, an abduction rotor arranged to face the magnetic pole surface of the stator, and two ball bearings that rotatably hold the rotor.
A housing that holds the ball bearing on the stator; a coil spring that is inserted into the rotating shaft of the rotor;
A fan held by a rotating shaft of the rotor, a coil spring is arranged between the rotor and the ball bearing, and two ball bearings are provided between the other ball bearing and the fan. The cylindrical spacer is fixed to the rotary shaft by press-fitting or the like at an appropriate pressurizing position.
【００１０】また本発明請求項２のモータファンは、前
記スペーサのファン側の端面が末広がり状になっている
構成を有している。A motor fan according to a second aspect of the present invention has a structure in which an end surface of the spacer on the fan side is flared.
【００１１】[0011]
【作用】本発明請求項１の構成によって、スペーサの片
側の端面でボールベアリングへの適正与圧の位置を決
め、かつ反対側の端面でファンの位置決めを行うことに
より回転軸に段付加工や溝切り加工をほどこす必要がな
くなり、比較的安価で小型のアウターロータ型のモータ
ファンが実現できる。According to the structure of claim 1 of the present invention, one end surface of the spacer determines the position of proper pressurization to the ball bearing, and the other end surface positions the fan, thereby stepping the rotary shaft. Since it is not necessary to perform grooving, a relatively inexpensive and small outer rotor type motor fan can be realized.
【００１２】また本発明請求項２の構成によって、スペ
ーサの末広がりの端面によりファンの位置決めを行うこ
とにより、回転子の軸径が比較的細くなっていってもフ
ァンの位置決めを安定に行うことができる。Further, according to the second aspect of the present invention, the fan is positioned by the end surface of the spacer which is widened toward the end, so that the fan can be positioned stably even if the shaft diameter of the rotor is relatively thin. it can.
【００１３】[0013]
（実施例１）以下本発明の一実施例について、図面を参
照しながら説明する。(Embodiment 1) An embodiment of the present invention will be described below with reference to the drawings.
【００１４】図１（ａ）において、１は鉄心、２は絶縁
体、３は巻線、４は回転子、４３は回転軸、５はボール
ベアリング、６はハウジング、７はファン、９はコイル
ばね、１０はスペーサである。この図１（ａ）におい
て、スペーサ１０の片側の端面でボールベアリング５へ
の適正与圧の位置を決め、かつ反対側の端面でファン７
の位置決めを行っているため回転軸４３に段付加工や溝
切り加工をほどこす必要がなくなり、比較的安価で小型
の請求項１記載のアウターロータ型のモータファンが実
現できる。In FIG. 1A, 1 is an iron core, 2 is an insulator, 3 is a winding wire, 4 is a rotor, 43 is a rotary shaft, 5 is a ball bearing, 6 is a housing, 7 is a fan, and 9 is a coil. The springs 10 are spacers. In FIG. 1A, one end surface of the spacer 10 determines the position of proper pressurization to the ball bearing 5, and the opposite end surface of the fan 7 is used.
Since the positioning is performed, it is not necessary to perform step processing or groove cutting processing on the rotary shaft 43, and the outer rotor type motor fan according to claim 1 which is relatively inexpensive and small can be realized.
【００１５】（実施例２）以下本発明の第２の実施例に
ついて、図面を参照しながら説明する。(Second Embodiment) A second embodiment of the present invention will be described below with reference to the drawings.
【００１６】図１（ｂ）において、１は鉄心、２は絶縁
体、３は巻線、４は回転子、４３は回転軸、５はボール
ベアリング、６はハウジング、７はファン、９はコイル
ばね、１１は末広がりスペーサである。この図１（ｂ）
において、ファン７の位置決めをスペーサ１１の末広が
り状の端面で行うため、回転軸４３の軸径が比較的細く
なっていってもファン７の位置決めを安定に行うことが
できる。In FIG. 1B, 1 is an iron core, 2 is an insulator, 3 is a winding wire, 4 is a rotor, 43 is a rotary shaft, 5 is a ball bearing, 6 is a housing, 7 is a fan, and 9 is a coil. The spring 11 is a divergent spacer. This Figure 1 (b)
In the above, since the fan 7 is positioned by the end surface of the spacer 11 which is flared toward the end, the fan 7 can be positioned stably even if the shaft diameter of the rotary shaft 43 is relatively thin.
【００１７】本発明は上記した実施例に限定されるもの
ではない。The present invention is not limited to the above embodiments.
【００１８】[0018]
【発明の効果】以上のように本発明請求項１は、スペー
サの片側の端面でボールベアリングへの適正与圧の位置
を決め、かつ反対側の端面でファンの位置決めをするこ
とできるため回転軸に段付加工や溝切り加工をほどこす
必要がなくなり、比較的安価で小型の優れたアウターロ
ータ型のモータファンを実現できるものである。As described above, according to the first aspect of the present invention, since the position of the proper pressurization to the ball bearing can be determined by the one end face of the spacer and the fan can be positioned by the opposite end face, the rotating shaft It is possible to realize an excellent outer rotor type motor fan that is relatively inexpensive and small in size, because it is not necessary to perform stepping and grooving.
【００１９】また本発明請求項２は、スペーサの末広が
りの端面によりファンの位置決めを行うことにより、回
転子の軸径が比較的細くなっていってもファンの位置決
めを安定に行うことができる比較的安価で小型の優れた
アウターロータ型のモータファンを実現できるものであ
る。According to the second aspect of the present invention, the fan is positioned by the end surface of the spacer which is widened toward the end, so that the fan can be positioned stably even if the shaft diameter of the rotor is relatively thin. It is possible to realize an inexpensive outer rotor type motor fan that is inexpensive and compact.
【図１】（ａ）は本発明の請求項１に対する一実施例の
アウターロータ型のモータファンの構造断面図
（ｂ）は本発明の請求項２に対する一実施例のアウター
ロータ型のモータファンの構造断面図FIG. 1A is a structural cross-sectional view of an outer rotor type motor fan according to a first embodiment of the present invention, and FIG. 1B is an outer rotor type motor fan according to a second embodiment of the present invention. Structural cross section of
【図２】（ａ）は従来の第一の例のモータファンの構造
断面図
（ｂ）は従来の第二の例のモータファンの構造断面図2A is a structural cross-sectional view of a conventional first example motor fan, and FIG. 2B is a structural cross-sectional view of a conventional second example motor fan.
１ 鉄心 ２ 絶縁体 ３ 巻線 ４ 回転子 ４１，４２，４３ 回転軸 ５ ボールベアリング ７ ファン ８ Ｃリング ９ コイルばね １０ スペーサ １１ 末広がりスペーサ 1 iron core 2 insulator 3 windings 4 rotor 41, 42, 43 rotating shaft 5 ball bearings 7 fans 8 C ring 9 coil spring 10 Spacer 11 End widening spacer
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) H02K 7/00 - 7/20 H02K 5/00 - 5/26 F16C 21/00 - 27/08 ─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. 7 , DB name) H02K 7/ 00-7/20 H02K 5/00-5/26 F16C 21/00-27/08
Claims (2)
のスロットに絶縁層を介してほどこされた巻線とを有す
る固定子と、前記固定子の磁極面と対抗して配置される
外転型の回転子と、前記回転子を回転自在に保持する２
個のボールベアリングと、前記ボールベアリングを前記
固定子に保持するハウジングと、前記回転子の回転軸に
挿入されるコイルばねと、前記回転子の回転軸に保持さ
れるファンとを備えたアウターロータ型のモータファン
において、前記回転子と前記ボールベアリングとの間に
コイルばねを配置し、かつ他方のボールベアリングと前
記ファンとの間で２個のボールベアリングへの適正与圧
の位置に筒状のスペーサを回転軸に圧入等で固定した構
成のアウターロータ型のモータファン。1. A stator having an iron core having a plurality of slots, a winding wire provided in the slots of the iron core through an insulating layer, and an outer rotor arranged to oppose a magnetic pole surface of the stator. Type rotor and 2 rotatably holding said rotor
An outer rotor including a plurality of ball bearings, a housing that holds the ball bearings on the stator, a coil spring that is inserted into the rotating shaft of the rotor, and a fan that is held by the rotating shaft of the rotor. Type motor fan, a coil spring is disposed between the rotor and the ball bearing, and a tubular shape is provided between the other ball bearing and the fan at a position where proper pressure is applied to the two ball bearings. An outer rotor type motor fan in which the spacer is fixed to the rotating shaft by press fitting.
状になっていることを特徴とする請求項１記載のアウタ
ーロータ型のモータファン。2. The outer rotor type motor fan according to claim 1, wherein the end surface of the spacer on the fan side is flared toward the end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01932394A JP3381356B2 (en) | 1994-02-16 | 1994-02-16 | Motor fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01932394A JP3381356B2 (en) | 1994-02-16 | 1994-02-16 | Motor fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07231609A JPH07231609A (en) | 1995-08-29 |
| JP3381356B2 true JP3381356B2 (en) | 2003-02-24 |
Family
ID=11996204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01932394A Expired - Fee Related JP3381356B2 (en) | 1994-02-16 | 1994-02-16 | Motor fan |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3381356B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19846919A1 (en) * | 1998-10-12 | 2000-04-13 | Bosch Gmbh Robert | Electric motor and fan wheel assembly has hub of fan fixed to motor shaft carried in two bearing bushes and axial movement is limited by hub and adjacent bush |
| US11870321B2 (en) | 2018-10-29 | 2024-01-09 | Minebea Mitsumi Inc. | Motor |
-
1994
- 1994-02-16 JP JP01932394A patent/JP3381356B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07231609A (en) | 1995-08-29 |
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