JPH02303345A - Blower - Google Patents
BlowerInfo
- Publication number
- JPH02303345A JPH02303345A JP12369189A JP12369189A JPH02303345A JP H02303345 A JPH02303345 A JP H02303345A JP 12369189 A JP12369189 A JP 12369189A JP 12369189 A JP12369189 A JP 12369189A JP H02303345 A JPH02303345 A JP H02303345A
- Authority
- JP
- Japan
- Prior art keywords
- fan
- armature
- blower
- field magnet
- magnetic powder
- 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
- 239000006247 magnetic powder Substances 0.000 claims abstract description 13
- 239000011347 resin Substances 0.000 claims abstract description 13
- 229920005989 resin Polymers 0.000 claims abstract description 13
- 230000005284 excitation Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 abstract 4
- 238000010168 coupling process Methods 0.000 abstract 4
- 238000005859 coupling reaction Methods 0.000 abstract 4
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Motor Or Generator Cooling System (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、主に車両用空調装置に用いられるブロワに
関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a blower mainly used in a vehicle air conditioner.
（従来の技術）
この種のブロワにおいては、主に直流ブラシレスモータ
が使用され、例えば該モータのロータを構成する界磁石
（永久磁石）とファンとを一体に設けたものが周知であ
る（例えば、実開昭６３−２８’５２９７号公報参照）
。ファンに界磁石を組み込む具体的な方法としては、例
えばファンの羽根車とボス部とを結ぶ連結部位に設けた
溝内に界磁石を収納して接着材等により固定するものが
あり、また、通常界磁石と連結部位との間にはその界磁
石の漏れ磁束を抑えるためのバックヨークが配されてい
る。(Prior Art) In this type of blower, a DC brushless motor is mainly used, and it is well known that, for example, a blower in which a field magnet (permanent magnet) constituting the rotor of the motor and a fan are integrally provided (for example, , see Utility Model Publication No. 63-28'5297)
. As a specific method of incorporating a field magnet into a fan, for example, there is a method in which the field magnet is housed in a groove provided in a connecting part connecting the impeller and the boss part of the fan and fixed with an adhesive or the like. Usually, a back yoke is arranged between the field magnet and the connecting portion to suppress leakage magnetic flux of the field magnet.
（発明が解決しようとする課題）
しかしながら、上述のようにファンに界磁石を接着して
固定する場合にあっては、車両の振動若しくはファンの
回転及び経時的なもの等が影響して接着面に剥離が生じ
、耐久性が悪いという問題点を有していた。(Problem to be Solved by the Invention) However, when a field magnet is bonded and fixed to a fan as described above, the adhesive surface may be affected by vibrations of the vehicle, rotation of the fan, and over time. The problem was that peeling occurred and the durability was poor.
また、界磁石の漏れ磁束を抑えるためのバックヨークは
比較的重く、軽減化することが望まれている。Furthermore, the back yoke for suppressing leakage magnetic flux of the field magnet is relatively heavy, and it is desired to reduce the weight of the back yoke.
そこで、この発明は上記問題点を解消し、耐久性の向上
を図ると共に、ファンの重量の軽減化を図ったブロワを
提供することを目的とする。SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a blower that solves the above problems, improves durability, and reduces the weight of the fan.
（課題を解決するための手段）
上記目的を達成するために、この発明に係るブロワは、
界磁石を有して回転自在に設けられるファンと、前記フ
ァンに対して回転磁界を発生する電機子と、前記電機子
を励磁する励磁手段とを具備して成るブロワにおいて、
磁性粉を含んだ樹脂により前記ファンの少なくとも羽根
車とボス部との連結部位と界磁石とを該ファンの成形時
に一体成形したものである。(Means for Solving the Problem) In order to achieve the above object, the blower according to the present invention has the following features:
A blower comprising a rotatably provided fan having a field magnet, an armature that generates a rotating magnetic field for the fan, and excitation means that excites the armature,
At least the connecting portion between the impeller and the boss portion of the fan and the field magnet are integrally molded using a resin containing magnetic powder when the fan is molded.
（作用）
したがって、ファンの羽根車とボス部とを結ぶ連結部位
と界磁石とを、磁性粉を含んだ樹脂により一体成形した
ので、従来のように界磁石がファンから剥離することが
ないと共に、連結部位が界磁石のバックヨークを兼ね、
これらにより上記課題が解決される。(Function) Therefore, since the field magnet and the connection part that connects the impeller and the boss of the fan are integrally molded from resin containing magnetic powder, the field magnet does not separate from the fan as in the past. , the connecting part also serves as the back yoke of the field magnet,
These solve the above problems.
（実施例） 以下、この発明の実施例を図面により説明する。(Example) Embodiments of the present invention will be described below with reference to the drawings.
第１図及び第２図において、ブロワｌは、中央に電機子
２が、この電機子２を内包する上方にファン３が、下方
にプリント基板４が各々配されて構成されている。In FIGS. 1 and 2, the blower 1 is configured with an armature 2 in the center, a fan 3 above the armature 2, and a printed circuit board 4 below.
電機子２は、例えば珪素鋼板を多段積層して成る鉄心２
ａのスロット内にコイル２ｂを三相等の多相巻きにして
構成され、ケーシング５内に圧入されて固定されている
。この電機子２は、その各相のコイル２ｂが後述するプ
リント基板４の励磁回路に適宜通電されてファン３に対
して回転磁界を発生するようになっている。The armature 2 is, for example, an iron core 2 formed by laminating silicon steel plates in multiple stages.
The coil 2b is wound in a multi-phase manner such as three-phase winding in the slot a, and is press-fitted into the casing 5 and fixed therein. The armature 2 is configured such that the coils 2b of each phase thereof are appropriately energized by an excitation circuit of a printed circuit board 4, which will be described later, to generate a rotating magnetic field for the fan 3.
電機子２を収納するケーシング５は、その下方に配した
底板６と周縁を合わせてネジ止めされており、電機子２
の下方に下記するプリント基板４をネジ止めしている。A casing 5 that houses the armature 2 is screwed to a bottom plate 6 disposed below the casing 5 so that the periphery of the casing 5 is aligned with the bottom plate 6 disposed below the casing 5.
A printed circuit board 4 described below is screwed below.
このケーシング５の側方にはプリント基板４に電源を供
給するためのケーブル７を通す孔５ａが形成されている
と共に、外周の三箇所にブロワ１を固定するための取付
ブラケッ）５ｂ、５ｂが設けられている。A hole 5a through which a cable 7 for supplying power to the printed circuit board 4 is passed is formed on the side of the casing 5, and mounting brackets 5b, 5b for fixing the blower 1 are provided at three locations on the outer periphery. It is provided.
プリント基板４には、上述の電機子２を励磁する励磁回
路（図示せず。）が設けられており、後述する軸１２に
固装された永久磁石１５の磁極位置を、例えばプリント
ｉ板４上に所定数配したホール素子４ａにより検出し、
その検出信号に基づいて電機子２の各相のコイル２ｂを
所定の位相差で逐次交番的に通電するようになっている
。The printed circuit board 4 is provided with an excitation circuit (not shown) that excites the armature 2 described above, and the magnetic pole position of a permanent magnet 15 fixed to the shaft 12, which will be described later, is controlled by, for example, the printed circuit board 4. Detected by a predetermined number of Hall elements 4a arranged above,
Based on the detection signal, the coils 2b of each phase of the armature 2 are sequentially and alternately energized with a predetermined phase difference.
ファン３は、樹脂等（例えば、ポリプロピレン（ｐｐ）
）から成る羽根車８と、同樹脂に磁性粉を混合させて成
るボス部９及びこのボス部９と羽根車８とを結ぶ連結部
位１０と界磁石１１とが図示しない金型において一体に
射出成形されて構成されており、ボス部９に圧入された
軸１２が前記ケーシング５、底板６に配した軸受１３ａ
、１３ｂに支持されワッシャ１４で係止されて回転自在
に設けられている。The fan 3 is made of resin or the like (for example, polypropylene (PP)).
), a boss part 9 made of the resin mixed with magnetic powder, a connecting part 10 connecting the boss part 9 and the impeller 8, and a field magnet 11 are integrally injected into a mold (not shown). The shaft 12 is formed by molding and is press-fitted into the boss portion 9, and the bearing 13a is arranged in the casing 5 and the bottom plate 6.
, 13b and locked by a washer 14 so as to be freely rotatable.
上述の磁性粉としては、例えば磁石材料として結晶磁気
異方性が大きいネオジム−フェライト−ホウ素（Ｎｄ−
Ｆｅ−Ｂ）系粉末が使用され、界磁石１１の部分は、そ
の成形時に環状の永久磁石となるように、ラジアル方向
に強磁界をかけて磁性粉の配向がなされている。この配
向によりラジアル方向に異方化された界磁石１１は、一
度消磁された後、円周方向に多磁極となるように着磁が
行なわれている。The above-mentioned magnetic powder is, for example, neodymium-ferrite-boron (Nd-
Fe--B) based powder is used, and the magnetic powder is oriented in the radial direction by applying a strong magnetic field to the field magnet 11 so that it becomes an annular permanent magnet during molding. The field magnet 11, which is anisotropic in the radial direction due to this orientation, is once demagnetized and then magnetized so as to have multiple magnetic poles in the circumferential direction.
一方、連結部位ＩＯ及びボス部９は界磁石１１のように
配向が行なわれておらず、アモルファス状態の等方性磁
石が構成されており、界磁石１１の漏れ磁束を抑えるバ
ックヨークの作用を果たすようになっている。On the other hand, the connecting portion IO and the boss portion 9 are not oriented like the field magnet 11, and are composed of isotropic magnets in an amorphous state. It is designed to fulfill its purpose.
また、ファン３を回転自在に支持する軸１２の下方には
、上述の界磁石１１と同様に着磁された環状の永久磁石
１５が固装されており、前述したホール素子４ａがこの
永久磁石１５の磁極位置を検出することで、界磁石１１
の磁極位置に対応した磁極検出が行なえるようになって
いる。Further, an annular permanent magnet 15 magnetized in the same manner as the field magnet 11 described above is fixed below the shaft 12 that rotatably supports the fan 3, and the Hall element 4a described above is attached to this permanent magnet. By detecting the magnetic pole position of field magnet 11
Magnetic pole detection corresponding to the magnetic pole position can be performed.
上述のように構成されるブロワ１は、ファン３をロータ
、電機子２をステータとする直流ブラシレスモーフを成
し、ファン３の界磁石１１の磁極位置に基づいて電機子
２の各相のコイル２ｂが交番的に通電され、それにより
界磁石１１に回転磁界を発生し、羽根車８を回転せしめ
るブロワして作動する。The blower 1 configured as described above is a DC brushless morph in which the fan 3 is the rotor and the armature 2 is the stator. 2b is alternately energized, thereby generating a rotating magnetic field in the field magnet 11, which operates as a blower that rotates the impeller 8.
而して、このブロワｌは、磁性粉を含んだ樹脂により界
磁石１１がファン３に一体成形されているので、従来の
ように接着剤等で固定してその接着面に生じていた剥離
等の問題がなく、耐久性が向上されるものである。その
上、少なくとも連結部位１０を界磁石１１と同様に磁性
粉を含ませた樹脂により成形したことでこの連結部位１
０が界磁石１１のバックヨークを兼ねて、従来金属によ
り成形の重いバックヨークを必要とせず、ファン３の重
量が軽減化されている。In this blower 1, the field magnet 11 is integrally molded with the fan 3 using a resin containing magnetic powder, so there is no problem with peeling that occurs on the adhesive surface when the field magnet 11 is fixed with an adhesive or the like as in the past. There is no problem with this, and durability is improved. Moreover, since at least the connecting portion 10 is molded from a resin containing magnetic powder in the same manner as the field magnet 11, this connecting portion 1
0 also serves as the back yoke of the field magnet 11, and the weight of the fan 3 is reduced without the need for a back yoke that is traditionally made of heavy metal.
また、界磁石１１の一体成形及びバックヨークの排除に
より部品点数が削減されると共に、その取付に必要であ
った工程がなくなり、生産性の向上を図ることができる
。In addition, by integrally molding the field magnet 11 and eliminating the back yoke, the number of parts is reduced, and the process required for its attachment is eliminated, making it possible to improve productivity.
（発明の効果）
以上述べたように、この発明によれば、ファンの羽根車
とボス部とを結ぶ連結部位と界磁石とを磁性粉を含んだ
樹脂により同ファンに一体成形したので、従来のファン
における界磁石の剥離等の問題が解消されて耐久性が向
上すると共に、連結部位が界磁石のバックヨークを兼ね
てファンの重量が軽減されるものである。(Effects of the Invention) As described above, according to the present invention, the connecting portion connecting the impeller and the boss portion of the fan and the field magnet are integrally molded into the same fan using resin containing magnetic powder, which is different from conventional methods. Problems such as separation of the field magnet in the fan are solved, and durability is improved, and the connecting portion also serves as a back yoke for the field magnet, reducing the weight of the fan.
また、界磁石の一体成形と共にバックヨークの排除によ
って部品点数が削られ、それに伴う取付工数の削減によ
って生産性が向上されるという効果をも有するものであ
る。Furthermore, by integrally molding the field magnet and eliminating the back yoke, the number of parts can be reduced, and productivity can be improved by reducing the number of installation steps associated with this.
第１図はこの発明の実施例に係るブロワの断面図、第２
図は同上の略分解斜視図である。
ｌ・・・ブロワ、２・・・電機子、３・・・ ファン、
４・・・プリント基板、′８・・６羽根車、９１６．ボ
ス部、ｌＯ・・・連結部位、１１・・・界磁石、１２・
・・軸。
特 許 出 願 人 ヂーゼル機器株式会社代理人
弁理士 大 貫 和 保
第１図
第２図FIG. 1 is a sectional view of a blower according to an embodiment of the present invention, and FIG.
The figure is a schematic exploded perspective view of the same as above. l... blower, 2... armature, 3... fan,
4...Printed circuit board, '8...6 impeller, 916. Boss part, lO... Connection part, 11... Field magnet, 12.
··shaft. Patent Applicant: Diesel Equipment Co., Ltd. Agent Patent Attorney Kazuyasu Ohnuki Figure 1 Figure 2
Claims (1)
ァンに対して回転磁界を発生する電機子と、前記電機子
を励磁する励磁手段とを具備して成るブロワにおいて、 磁性粉を含んだ樹脂により前記ファンの少なくとも羽根
車とボス部との連結部位と界磁石とを該ファンの成形時
に一体成形したことを特徴とするブロワ。[Scope of Claims] A blower comprising: a rotatably provided fan having a field magnet; an armature that generates a rotating magnetic field for the fan; and excitation means that excites the armature. A blower, characterized in that at least a connection portion between the impeller and the boss portion of the fan and a field magnet are integrally molded using a resin containing magnetic powder when the fan is molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12369189A JPH02303345A (en) | 1989-05-17 | 1989-05-17 | Blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12369189A JPH02303345A (en) | 1989-05-17 | 1989-05-17 | Blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02303345A true JPH02303345A (en) | 1990-12-17 |
Family
ID=14866939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12369189A Pending JPH02303345A (en) | 1989-05-17 | 1989-05-17 | Blower |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02303345A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10132339A (en) * | 1996-11-05 | 1998-05-22 | Nippon Oil Co Ltd | Cold air machine |
-
1989
- 1989-05-17 JP JP12369189A patent/JPH02303345A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10132339A (en) * | 1996-11-05 | 1998-05-22 | Nippon Oil Co Ltd | Cold air machine |
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