JPH08130859A - Mounting structure of rotor - Google Patents
Mounting structure of rotorInfo
- Publication number
- JPH08130859A JPH08130859A JP6266535A JP26653594A JPH08130859A JP H08130859 A JPH08130859 A JP H08130859A JP 6266535 A JP6266535 A JP 6266535A JP 26653594 A JP26653594 A JP 26653594A JP H08130859 A JPH08130859 A JP H08130859A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- centrifugal impeller
- rotary
- rotating body
- rotating
- 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
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/20—Mounting rotors on shafts
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、回転駆動用回転軸と中
央部に前記回転軸と嵌合する穴が形成された回転体とを
取り付ける回転装置の回転体取付構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary body mounting structure of a rotary device for mounting a rotary drive rotary shaft and a rotary body having a central portion formed with a hole for fitting the rotary shaft.
【０００２】[0002]
【従来の技術】回転駆動用回転軸と回転体とを取り付け
る方法の一例とて、電気掃除機に用いられる電動送風機
の例で説明する。図１０は従来の電動送風機の断面図で
ある。電動送風機１は、電動機部２及び送風機部３から
構成される。電動機部２は、整流子形電動機で、ハウジ
ング６とエンドブラケット７内に回転子４及び固定子５
が収納される。回転子４は、軸受１３，１４により支持
され、シャフト１５は、エンドブラケット７を貫通して
送風機部３側へ延びている。送風機部３は、エンドブラ
ケット７上に固定案内羽根８が配置しその上に遠心羽根
車９が、シャフト１５にネジ１６によって一体固定され
る。さらに、それらを覆ってケーシング１０がエンドブ
ラケット７外周と圧入固定され、固定案内羽根８を狭持
固定している。回転子４は、両端軸受１３，１４の間に
整流子１７及び鉄心１８が配置固定され、鉄心１８に
は、巻線１９が巻かれて整流子１７の外周部に電気的に
接続される。また、ハウジング６の外周面上にネジ止め
固定されるブラシ保持器１１に収納されるカーボンブラ
シ１２は、ブラシ保持器１１内で、バネ等に付勢され
て、整流子１７の外周面に当接し、電気的に接続してい
る。回転子４及び遠心羽根車９は、各々に製作上の寸法
バラツキ等からアンバランスが発生するが、各々毎にバ
ランス修正機等によって修正され所定の値以下に管理す
ることができる。回転子４のバランス修正は鉄心１８と
バランスリング２１の２面で修正している。2. Description of the Related Art As an example of a method of attaching a rotary drive rotary shaft and a rotary body, an example of an electric blower used in an electric vacuum cleaner will be described. FIG. 10 is a sectional view of a conventional electric blower. The electric blower 1 includes an electric motor unit 2 and a blower unit 3. The electric motor unit 2 is a commutator type electric motor, and includes a rotor 4 and a stator 5 in a housing 6 and an end bracket 7.
Is stored. The rotor 4 is supported by bearings 13 and 14, and the shaft 15 extends through the end bracket 7 toward the blower unit 3 side. In the blower unit 3, a fixed guide vane 8 is arranged on an end bracket 7, and a centrifugal impeller 9 is integrally fixed to a shaft 15 by a screw 16 on the fixed guide vane 8. Further, the casing 10 is press-fitted and fixed to the outer periphery of the end bracket 7 so as to cover them and hold and fix the fixed guide vane 8. In the rotor 4, a commutator 17 and an iron core 18 are arranged and fixed between both end bearings 13 and 14, and a winding wire 19 is wound around the iron core 18 and electrically connected to an outer peripheral portion of the commutator 17. Further, the carbon brush 12 housed in the brush holder 11 which is screwed and fixed on the outer peripheral surface of the housing 6 is urged by a spring or the like in the brush holder 11 to contact the outer peripheral surface of the commutator 17. Touches and is electrically connected. The rotor 4 and the centrifugal impeller 9 each have an imbalance due to dimensional variations in manufacturing, etc., but each can be corrected by a balance correction machine or the like and managed to be below a predetermined value. The balance of the rotor 4 is corrected by the iron core 18 and the balance ring 21.
【０００３】しかしながら、電動送風機１に組立られた
時には、シャフト１５と遠心羽根車９の内径との嵌合隙
間や、組み合わされた場合の各々のアンバランスのベク
トル和の違いから、上記の個々に管理されている値より
も、組み合わせアンバランス量が大きくなってしまい、
大きいものは振動騒音及び信頼性低下の原因となる。However, when assembled into the electric blower 1, due to the fitting gap between the shaft 15 and the inner diameter of the centrifugal impeller 9 and the difference in the vector sum of each unbalance when combined, the above-mentioned individual The combined imbalance amount becomes larger than the managed value,
Larger ones cause vibration noise and lower reliability.
【０００４】[0004]
【発明が解決しようとする課題】しかし、上記構成の電
動送風機において、遠心羽根車９の内径とシャフト１５
の外径との関係は、遠心羽根車９をシャフト１５へ容易
に取付け可能なように、回転軸径が遠心羽根車内径より
も若干小さく設定され、すきまばめで取り付けられてい
る。従って、例え回転子４と遠心羽根車９を単品で精度
良くバランス修正をしていても、図１１，図１２に示す
ように遠心羽根車９の回転中心とシャフト１５の回転中
心とが一致せず、偏心した状態で取り付けられると遠心
羽根車回転系にアンバランスが生じるという問題点があ
る。例えば、遠心羽根車９の質量を５０ｇとして、０.
０２mm の偏心が生じたとすると、５０×０.０２＝１.
０(ｇmm)のアンバランス量となる。However, in the electric blower configured as described above, the inner diameter of the centrifugal impeller 9 and the shaft 15
With respect to the outer diameter of the centrifugal impeller, the diameter of the rotating shaft is set to be slightly smaller than the inner diameter of the centrifugal impeller so that the centrifugal impeller 9 can be easily attached to the shaft 15. Therefore, even if the rotor 4 and the centrifugal impeller 9 are individually and accurately corrected for balance, as shown in FIGS. 11 and 12, the rotation center of the centrifugal impeller 9 and the rotation center of the shaft 15 match. On the other hand, if the centrifugal impeller is mounted in an eccentric state, the centrifugal impeller rotating system is unbalanced. For example, assuming that the centrifugal impeller 9 has a mass of 50 g,
If an eccentricity of 02 mm occurs, then 50 x 0.02 = 1.
The amount of unbalance is 0 (gmm).
【０００５】また、遠心羽根車９をシャフト１５に取り
付けるときねじ１６で締め付けているが、電動送風機の
回転始動時に遠心羽根車９の慣性により、遠心羽根車９
がシャフト１５に対してずれが生じ、アンバランス位置
が変化する問題点もある。Although the centrifugal impeller 9 is fastened with the screw 16 when it is attached to the shaft 15, the centrifugal impeller 9 is driven by the inertia of the centrifugal impeller 9 when the electric blower starts rotating.
However, there is also a problem that the unbalanced position changes due to the displacement of the shaft 15 with respect to the shaft 15.
【０００６】このようなアンバランスは高速回転時遠心
力によるシャフト１５のたわみおよび振動，騒音等の問
題となっていた。Such an imbalance has been a problem of deflection, vibration and noise of the shaft 15 due to centrifugal force during high speed rotation.
【０００７】本発明は、上記問題点に鑑みてなされたも
ので、その目的は、遠心羽根車と回転軸との偏心を少な
くし、アンバランス量を低減でき、遠心羽根車と回転軸
とのずれを防止できる回転装置の回転体取付構造を提供
することにある。The present invention has been made in view of the above problems, and an object thereof is to reduce the eccentricity between the centrifugal impeller and the rotating shaft, to reduce the amount of unbalance, and to reduce the unbalance between the centrifugal impeller and the rotating shaft. It is an object of the present invention to provide a rotating body mounting structure of a rotating device capable of preventing deviation.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に本発明の特徴とするところは、回転体１の回転軸と、
中央部に前記回転軸と嵌合する穴が形成された回転体２
とを取り付ける回転装置の回転体取付構造において、前
記回転体の内周部の穴は角形構造をとり、少なくとも一
つの辺は回転体の回転中心からの距離が回転軸の半径よ
りも小さくなるように回転方向に向かって漸次減少する
ように形成された回転軸停止部を持ち、円筒面に平面部
を設ける回転軸の平面部の一端が、前記回転軸停止部に
当り、回転軸の円筒面が前記回転体の角形構造の穴の２
辺で当接可能にしたことにある。In order to achieve the above object, the present invention is characterized in that a rotating shaft of a rotating body 1 and
Rotating body 2 having a hole formed in the center for fitting with the rotating shaft
In the rotating body mounting structure of the rotating device for mounting the rotating body, the hole in the inner peripheral portion of the rotating body has a square structure, and at least one side is such that the distance from the center of rotation of the rotating body is smaller than the radius of the rotating shaft. Has a rotary shaft stopper formed so as to gradually decrease in the direction of rotation, and a flat surface portion is provided on the cylindrical surface. One end of the flat surface portion of the rotary shaft hits the rotary shaft stopper portion and the cylindrical surface of the rotary shaft. 2 of the square hole of the rotating body
It is possible to abut on the side.
【０００９】[0009]
【作用】請求項１記載の回転体取付構造において、回転
軸と回転体を組み付けの際に、回転体である遠心羽根車
９の内周部の穴３０にシャフト１５を挿入し、遠心羽根
車９をシャフト１５の回転方向と逆の方向に回転（また
は、遠心羽根車９を固定し、シャフト１５の回転方向と
同じ方向に回転）することにより、回転軸停止部３１と
シャフト１５の平面部４０の一端４１とが当たり回転が
止められる。さらにシャフト１５を回転させようとする
と、シャフト１５は遠心羽根車９を回転中心から見て回
転軸停止部３１の方向に押し出そうとする力Ｆが働く。
その力Ｆで遠心羽根車９はずれ、内周部の角形穴３０の
回転軸受け部辺３２と辺３３はシャフト１５の円筒面４
２に当接する。これは組み直しても常にほぼ同じ位置で
位置決めが終了するため組立てによる回転軸の偏心のバ
ラツキが少なくなる。また、遠心羽根車９のバランス修
正を単体で行う場合、バランス修正装置のスピンドルを
遠心羽根車９を取り付ける電動送風機のシャフト１５と
ほぼ同じ寸法の軸径および円筒面に平面部を設けた構造
にすると、バランス修正時と電動送風機組込時の遠心羽
根車９の回転中心をほぼ同じにすることができ、偏心に
より生じるアンバランスを少なくすることができる。In the rotating body mounting structure according to claim 1, when the rotating shaft and the rotating body are assembled, the shaft 15 is inserted into the hole 30 in the inner peripheral portion of the centrifugal impeller 9 which is the rotating body, and the centrifugal impeller is inserted. By rotating 9 in the direction opposite to the rotation direction of the shaft 15 (or by rotating the centrifugal impeller 9 and rotating in the same direction as the rotation direction of the shaft 15), the rotation shaft stop portion 31 and the flat surface portion of the shaft 15 are rotated. The one end 41 of 40 is hit and the rotation is stopped. When the shaft 15 is further rotated, a force F acts on the shaft 15 to push the centrifugal impeller 9 toward the rotation shaft stop portion 31 when viewed from the rotation center.
The centrifugal impeller 9 is disengaged by the force F, and the sides 32 and 33 of the rotary bearing of the square hole 30 in the inner peripheral portion are the cylindrical surface 4 of the shaft 15.
Abut 2. Even if it is reassembled, since the positioning is always completed at substantially the same position, variations in eccentricity of the rotary shaft due to assembly are reduced. Further, in the case where the balance correction of the centrifugal impeller 9 is performed by itself, the spindle of the balance correction device has a shaft diameter of substantially the same size as the shaft 15 of the electric blower to which the centrifugal impeller 9 is attached and a flat surface portion is provided on the cylindrical surface. Then, the center of rotation of the centrifugal impeller 9 can be made substantially the same when the balance is corrected and when the electric blower is incorporated, and the unbalance caused by the eccentricity can be reduced.
【００１０】[0010]
【実施例】以下、本発明の実施例を図面に沿って説明す
る。Embodiments of the present invention will be described below with reference to the drawings.
【００１１】図２は本発明の実施例を説明する構成図、
図３は図２における遠心羽根車の平面図、図４は図３の
断面図、図５はシャフト１５の平面図、図６は図５の遠
心羽根取付け部の正面図、図７は本実施例の電気掃除機
に用いられる電動送風機遠心羽根車９を取付ける部分の
断面構成図である。尚、本実施例において、電動送風機
の遠心羽根車取付け以外の構成は従来例で説明を行った
図１０の構成と同じなので説明は省略する。FIG. 2 is a block diagram for explaining an embodiment of the present invention,
3 is a plan view of the centrifugal impeller in FIG. 2, FIG. 4 is a cross-sectional view of FIG. 3, FIG. 5 is a plan view of the shaft 15, FIG. 6 is a front view of the centrifugal blade mounting portion of FIG. 5, and FIG. It is a cross-sectional block diagram of the part which attaches the electric blower centrifugal impeller 9 used for the example vacuum cleaner. In the present embodiment, the configuration of the electric blower other than the attachment of the centrifugal impeller is the same as the configuration shown in FIG.
【００１２】まず、図５及び図６において、整流子形電
動機の回転子４と一体になっているシャフト１５の遠心
羽根車９を取付ける部分は円柱上(半径：Ｌ0）の外周面
に、機械加工で平面部４０が形成されている。シャフト
の中心より平面部４０までの距離はＬ2とする。First, in FIG. 5 and FIG. 6, the portion of the shaft 15 integrated with the rotor 4 of the commutator type motor on which the centrifugal impeller 9 is mounted is a cylindrical (radius: L 0 ) outer peripheral surface. The plane portion 40 is formed by machining. The distance from the center of the shaft to the flat portion 40 is L 2 .
【００１３】次に、図１，図２及び図３に示すように、
遠心羽根車９の中央部には、打ち抜き加工等でシャフト
１５が嵌入する角形の穴３０が形成されている。穴３０
は、シャフト１５の外周面に形成された曲面部４２の径
Ｌ0よりも若干大きな寸法Ｌ1に設定された四角の穴が形
成されている。また、この四角の穴の一角にはシャフト
１５の曲面部４２の径Ｌ0よりも小さな半径Ｌ3に接する
停止部３１が形成されている。停止部３１の相対する角
Ａはほぼ９０°の角度をとり、各頂点は応力集中により
亀裂が生じないように、小さなＲ(半径１〜２mm)を設け
ている。Next, as shown in FIGS. 1, 2 and 3,
At the center of the centrifugal impeller 9, a square hole 30 into which the shaft 15 is fitted is formed by punching or the like. Hole 30
Is formed with a square hole having a dimension L 1 slightly larger than the diameter L 0 of the curved surface portion 42 formed on the outer peripheral surface of the shaft 15. Further, at one corner of this square hole, a stop portion 31 is formed which contacts a radius L 3 smaller than the diameter L 0 of the curved surface portion 42 of the shaft 15. The opposite angle A of the stop portion 31 is an angle of about 90 °, and each apex is provided with a small radius R (radius 1 to 2 mm) so that a crack does not occur due to stress concentration.
【００１４】次に、図７を用いて、本実施例の電動送風
機の遠心羽根車取付構造を説明する。Next, the centrifugal impeller mounting structure of the electric blower of this embodiment will be described with reference to FIG.
【００１５】シャフト１５に軸受１４よりスペーサ５
０，円盤５１，遠心羽根車９，円盤５２を介して積層配
置されている。そして、ネジ１６を用いて円盤５２が遠
心羽根車９を押圧することにより一体固定される。From the bearing 14 to the shaft 15 to the spacer 5
0, the disk 51, the centrifugal impeller 9, and the disk 52 are laminated. Then, the disk 52 is integrally fixed by pressing the centrifugal impeller 9 using the screw 16.
【００１６】この組み付けにおいて、遠心羽根車９の穴
３０にシャフト１５を挿入後、図２に示すように、遠心
羽根車９を固定し、シャフト１５を回転方向（矢印方
向）に回転させる。すると、遠心羽根車９の停止部３１
にシャフト１５の一端４１が当たり、シャフト１５は遠
心羽根車９を回転中心から見て、停止部３１の方向に押
し出す。シャフト１５の円筒面４２は遠心羽根車９の穴
３０の角Ａを構成する辺３２，辺３３に当接し、位置決
めを完了する。遠心羽根車９とシャフト１５との回転軸
を組立てのバラツキを少なくし、安定させることができ
る。In this assembly, after inserting the shaft 15 into the hole 30 of the centrifugal impeller 9, the centrifugal impeller 9 is fixed and the shaft 15 is rotated in the rotation direction (arrow direction) as shown in FIG. Then, the stopping portion 31 of the centrifugal impeller 9
One end 41 of the shaft 15 hits the shaft 15, and the shaft 15 pushes the centrifugal impeller 9 in the direction of the stop 31 when the centrifugal impeller 9 is viewed from the rotation center. The cylindrical surface 42 of the shaft 15 contacts the sides 32 and 33 forming the corner A of the hole 30 of the centrifugal impeller 9 to complete the positioning. It is possible to reduce variations in assembling the rotary shafts of the centrifugal impeller 9 and the shaft 15 and stabilize them.
【００１７】また、図１３に示すように、前記の遠心羽
根車９のバランスを修正する装置において、遠心羽根車
９を回転駆動する回転軸の形状を前記の電動送風機のシ
ャフト１５とほぼ同じ寸法の軸径で平面部を設けること
により、バランス修正時の遠心羽根車９の回転軸と電動
送風機に組み込み時の回転軸とをほぼ同一にすることが
できる。Further, as shown in FIG. 13, in the apparatus for correcting the balance of the centrifugal impeller 9 described above, the shape of the rotating shaft for rotating the centrifugal impeller 9 is substantially the same as the shaft 15 of the electric blower. By providing the flat portion with the shaft diameter of, the rotation axis of the centrifugal impeller 9 at the time of balance correction and the rotation axis at the time of being incorporated in the electric blower can be made substantially the same.
【００１８】更には、図８，図９に示すように、遠心羽
根車９のバランス修正時に残留アンバランスを遠心羽根
車９の穴３０の停止部３１に対し、決められた角度，決
められた範囲の量を残すようにする。例えば、図９では
停止部３１の方向に０.５（ｇmm）のアンバランス量を
残す。一方、回転子４のアンバランスを鉄心１８とバラ
ンスリング２１の２面で修正するようにし、それぞれの
アンバランスはほぼ１８０°の位相差をもたせる。Furthermore, as shown in FIGS. 8 and 9, when the balance of the centrifugal impeller 9 is corrected, the residual unbalance is determined with respect to the stop portion 31 of the hole 30 of the centrifugal impeller 9 at a predetermined angle. Try to leave a range amount. For example, in FIG. 9, an unbalance amount of 0.5 (gmm) is left in the direction of the stop portion 31. On the other hand, the unbalance of the rotor 4 is corrected by the two surfaces of the iron core 18 and the balance ring 21, and each unbalance has a phase difference of about 180 °.
【００１９】また、鉄心１８のアンバランスはシャフト
１５の停止部３１に対し、決められた角度，決められた
範囲の量を残すようにする。例えば、本実施例の図８で
は回転中心からシャフト１５の平坦部と垂直方向から回
転と逆方向に約３０°の角度に０.５(ｇmm）のアンバラ
ンス量を残す。Further, the imbalance of the iron core 18 is such that a fixed angle and a fixed range amount are left with respect to the stop portion 31 of the shaft 15. For example, in FIG. 8 of the present embodiment, an imbalance amount of 0.5 (gmm) is left at an angle of about 30 ° in the direction opposite to the rotation from the direction perpendicular to the flat portion of the shaft 15 from the center of rotation.
【００２０】このように、それぞれ単品で上記のように
アンバランスを修正したものを本発明の回転体取付構造
で取り付けると組み合わせ時のアンバランスの位置を常
にほぼ一定にすることができる。上記のバランス修正を
行えば、高速回転時、鉄心１８に残るアンバランスによ
りシャフト１５を図８のように曲げようとする遠心力
を、軸受１４を支点として遠心羽根車９に残るアンバラ
ンスの遠心力が打ち消すように働き、シャフトの曲がり
を元に戻す力となる。したがって、高速回転となっても
遠心力によるシャフトのたわみを少なくすることができ
る。As described above, when the individual imbalances are corrected as described above and attached by the rotating body attaching structure of the present invention, the imbalance position at the time of combination can be kept substantially constant. If the above-mentioned balance correction is performed, the centrifugal force that tends to bend the shaft 15 as shown in FIG. 8 due to the unbalance remaining in the iron core 18 at the time of high-speed rotation, the unbalance centrifugal force remaining in the centrifugal impeller 9 using the bearing 14 as a fulcrum The force acts so as to cancel it, and it becomes the force to restore the bending of the shaft. Therefore, it is possible to reduce the deflection of the shaft due to the centrifugal force even at high speed rotation.
【００２１】尚、本発明は上記実施例に限定するもので
はない。上記実施例では、遠心羽根車が１枚の電動送風
機で説明を行ったが、遠心羽根車が複数の電動送風機に
も適用できることはいうまでもない。The present invention is not limited to the above embodiment. In the above-mentioned embodiment, an electric blower having one centrifugal impeller has been described, but it goes without saying that the centrifugal impeller can be applied to a plurality of electric blowers.
【００２２】更に、上記実施例では、図２に示すように
遠心羽根車の内径を角形にし、回転停止部とシャフトの
平面部の一端を当てる例で説明したが、図１４に示すよ
うにシャフト１５に突起４３を設け、遠心羽根車の内径
に遠心羽根車の回転中心よりの距離が回転体の回転方向
に向かって漸次減少するように形成された回転停止部と
前記回転軸の突部を当てても同じような効果を得ること
ができる。Further, in the above-described embodiment, the inner diameter of the centrifugal impeller is made square as shown in FIG. 2 and the rotation stop portion and one end of the flat portion of the shaft are brought into contact with each other. However, as shown in FIG. 15 is provided with a protrusion 43, and a rotation stopper and a protrusion of the rotary shaft are formed in the inner diameter of the centrifugal impeller so that the distance from the rotation center of the centrifugal impeller gradually decreases in the rotation direction of the rotor. Even if it hits, the same effect can be obtained.
【００２３】更には図１５に示すように、シャフト１５
の径より大きな遠心羽根車の内径に遠心羽根車の回転中
心よりの距離が回転体の回転方向に向かって漸次減少す
るように形成された回転停止部と前記回転軸の突部を当
てても同じような効果を得ることができる。この場合は
回り止めと偏心を小さくすることができる。Further, as shown in FIG. 15, the shaft 15
Even if the projection of the rotation shaft and the rotation stop portion formed so that the distance from the rotation center of the centrifugal impeller gradually decreases in the rotation direction of the rotating body is applied to the inner diameter of the centrifugal impeller larger than the diameter of The same effect can be obtained. In this case, the detent and the eccentricity can be reduced.
【００２４】また、本実施例では電動送風機で説明した
が、回転軸に回転体を取り付ける構造のものであれば適
用可能である。例として、レーザプリンタやレーザスキ
ャナー等に使われるポリゴンミラーモータにおいて、ミ
ラーとモータを取り付ける構造に本発明を適用すれば回
転停止部と回転軸の突部により、回転方向に拘束されて
いるのでミラーの回転方向のずれが発生せず、偏心の発
生もない。又、このことによりミラーの軸方向の拘束力
も小さくてよいので、ミラーの変形を防止できる。Further, although the electric blower has been described in the present embodiment, any structure having a rotary body attached to the rotary shaft can be applied. As an example, in a polygon mirror motor used in a laser printer, a laser scanner, etc., if the present invention is applied to a structure in which a mirror and a motor are attached, the mirror is constrained in the rotation direction by the rotation stop portion and the protrusion of the rotation shaft. There is no deviation in the direction of rotation and there is no eccentricity. Further, as a result, the axial restraining force of the mirror may be small, so that the deformation of the mirror can be prevented.
【００２５】[0025]
【発明の効果】本発明によれば、遠心羽根車と回転子の
アンバランス修正を単独で行っても、組み合わせ時には
偏心を少なくなり、組み合わせのアンバランスが小さく
することができ、振動やアンバランスの遠心力によるシ
ャフトの曲がりを防止できる。また、本発明によれば、
高速回転においても、低振動，低騒音運転が可能とな
り、特に整流子部分のバランス精度を向上できるので、
整流子の回転精度が安定でき、カーボンブラシの長寿命
化が図られ、モータの信頼性をより向上させることがで
きる。According to the present invention, even if the unbalance correction of the centrifugal impeller and the rotor is carried out independently, the eccentricity can be reduced during the combination, and the unbalance of the combination can be reduced, resulting in vibration and unbalance. Bending of the shaft due to centrifugal force can be prevented. Further, according to the present invention,
Even at high speed rotation, low vibration and low noise operation are possible, and especially the balance accuracy of the commutator part can be improved.
The rotation accuracy of the commutator can be stabilized, the life of the carbon brush can be extended, and the reliability of the motor can be further improved.
【図１】本発明の原理図である。FIG. 1 is a principle diagram of the present invention.
【図２】本発明の実施例を説明する構成図である。FIG. 2 is a configuration diagram illustrating an embodiment of the present invention.
【図３】図２における遠心羽根車の平面図である。FIG. 3 is a plan view of the centrifugal impeller in FIG.
【図４】図３の断面図である。4 is a cross-sectional view of FIG.
【図５】図２におけるシャフトの平面図である。5 is a plan view of the shaft in FIG. 2. FIG.
【図６】図５における遠心羽根取付け部の正面図であ
る。FIG. 6 is a front view of a centrifugal blade mounting portion in FIG.
【図７】本実施例の電動送風機の遠心羽根車取付け部の
断面構成図である。FIG. 7 is a cross-sectional configuration diagram of a centrifugal impeller attachment portion of the electric blower of the present embodiment.
【図８】本実施例の電動送風機のバランス修正法の説明
図である。FIG. 8 is an explanatory diagram of a balance correction method for the electric blower according to the present embodiment.
【図９】図８の正面図である。9 is a front view of FIG. 8. FIG.
【図１０】従来の電動送風機の断面構成図である。FIG. 10 is a cross-sectional configuration diagram of a conventional electric blower.
【図１１】図１０における遠心羽根車取付け部の断面図
の問題を説明する図である。11 is a diagram illustrating a problem of a cross-sectional view of the centrifugal impeller attachment portion in FIG.
【図１２】図１１の断面図である。12 is a cross-sectional view of FIG.
【図１３】本発明によるバランス修正機の説明図であ
る。FIG. 13 is an explanatory diagram of a balance correction machine according to the present invention.
【図１４】本発明の第２の実施例を示す図である。FIG. 14 is a diagram showing a second embodiment of the present invention.
【図１５】本発明の第３の実施例を示す図である。FIG. 15 is a diagram showing a third embodiment of the present invention.
１…電動送風機、４…回転子、６…ハウジング、９…遠
心羽根車、１５…シャフト、１７…整流子。DESCRIPTION OF SYMBOLS 1 ... Electric blower, 4 ... Rotor, 6 ... Housing, 9 ... Centrifugal impeller, 15 ... Shaft, 17 ... Commutator.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 常楽 文夫 茨城県日立市東多賀町一丁目１番１号 株 式会社日立製作所電化機器事業部多賀本部 内 (72)発明者 豊島 久則 茨城県日立市東多賀町一丁目１番１号 株 式会社日立製作所電化機器事業部多賀本部 内 (72)発明者 中居 貴弘 茨城県日立市東多賀町一丁目１番１号 株 式会社日立製作所電化機器事業部多賀本部 内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Fumio Jouraku 1-1-1, Higashitaga-cho, Hitachi-shi, Ibaraki Hitachi Ltd. Electric Appliances Division, Taga Headquarters, Hitachi Ltd. 1-1-1 Machi, Electric Appliances Division, Hitachi Ltd., Hitachi, Ltd. (72) Inventor Takahiro Nakai 1-1-1, Higashitaga-cho, Hitachi, Ibaraki Pref., Taga Division, Electrical Appliances, Hitachi, Ltd.
Claims (5)
と嵌合する穴が形成された回転体２とを取り付ける回転
装置の回転体取付構造において、 前記回転体の内周部の穴は角形構造をとり、少なくとも
一つの辺は回転体の回転中心からの距離が回転軸の半径
よりも小さくなるように回転方向に向かって漸次減少す
るように形成された回転軸停止部を持ち、円筒面に平面
部を設ける回転軸の平面部の一端が、前記回転軸停止部
に当り、回転軸の円筒面が前記回転体の角形構造の穴の
２辺で当接可能にしたことを特徴とする回転体の取付構
造。1. A rotary body mounting structure for a rotary device, wherein a rotary shaft of a rotary body 1 and a rotary body 2 having a hole formed at a central portion to be fitted with the rotary shaft are mounted, wherein an inner peripheral portion of the rotary body is provided. The hole has a square structure, and at least one side has a rotation shaft stop portion formed so as to gradually decrease in the rotation direction so that the distance from the rotation center of the rotating body becomes smaller than the radius of the rotation shaft. One end of the flat surface portion of the rotary shaft having a flat surface portion on the cylindrical surface hits the rotary shaft stop portion, and the cylindrical surface of the rotary shaft can contact the two sides of the rectangular hole of the rotary body. Mounting structure for rotating bodies.
回転軸停止部を持つ辺の相対する角を形成する２辺であ
ることを特徴とする回転体の取付構造。2. The method according to claim 1, wherein the two sides of the hole of the rectangular structure of the rotating body, which is in contact with the cylindrical surface of the rotating shaft, are two sides forming opposite corners of the side having the rotating shaft stopping portion. Rotating body mounting structure.
ほぼ直角であることを特徴とする回転体の取付構造。3. The mounting structure for a rotating body according to claim 1, wherein two sides of the square-shaped hole of the rotating body which is in contact with the cylindrical surface of the rotating shaft are substantially right angles.
正を行い、回転体２を取り付ける側の残留アンバランス
の位相と回転体２の残留アンバランスの位相がほぼ同相
で残留アンバランスの量はほぼ同量であることを特徴と
する回転体の取付構造。4. The balance correction of the rotating body 1 according to claim 1, wherein at least two surfaces are corrected, and the phase of the residual unbalance on the side on which the rotating body 2 is mounted and the phase of the residual unbalance of the rotating body 2 are corrected. Is the same phase, and the amount of residual unbalance is almost the same.
円筒面に平面部を設けた回転軸でバランス修正されるこ
とを特徴とした回転体の取付構造。5. The rotating body 2 according to claim 1, wherein the rotating body 2 has a shaft diameter substantially the same as the rotating shaft of the rotating body 1,
A rotary body mounting structure in which balance is corrected by a rotary shaft having a flat surface on a cylindrical surface.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26653594A JP3298335B2 (en) | 1994-10-31 | 1994-10-31 | Rotating body mounting structure and electric blower using the same |
| TW084110332A TW330230B (en) | 1994-10-31 | 1995-10-03 | The assembling structure of rotator and electric fan using that structure |
| KR1019950038022A KR0169028B1 (en) | 1994-10-31 | 1995-10-30 | Structure for fastening rotative objects and electric blower using the same |
| CN95116091A CN1056438C (en) | 1994-10-31 | 1995-10-31 | Structure for fastening rotative objects and electric blower using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26653594A JP3298335B2 (en) | 1994-10-31 | 1994-10-31 | Rotating body mounting structure and electric blower using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08130859A true JPH08130859A (en) | 1996-05-21 |
| JP3298335B2 JP3298335B2 (en) | 2002-07-02 |
Family
ID=17432222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26653594A Expired - Lifetime JP3298335B2 (en) | 1994-10-31 | 1994-10-31 | Rotating body mounting structure and electric blower using the same |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3298335B2 (en) |
| KR (1) | KR0169028B1 (en) |
| CN (1) | CN1056438C (en) |
| TW (1) | TW330230B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2658870C1 (en) * | 2015-04-03 | 2018-06-25 | Ниссан Мотор Ко., Лтд. | Internal combustion engine |
| EP3540916A4 (en) * | 2016-11-11 | 2019-10-16 | Panasonic Intellectual Property Management Co., Ltd. | Rotating body, electric blower, and method for manufacturing rotating body |
-
1994
- 1994-10-31 JP JP26653594A patent/JP3298335B2/en not_active Expired - Lifetime
-
1995
- 1995-10-03 TW TW084110332A patent/TW330230B/en not_active IP Right Cessation
- 1995-10-30 KR KR1019950038022A patent/KR0169028B1/en active IP Right Grant
- 1995-10-31 CN CN95116091A patent/CN1056438C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CN1127331A (en) | 1996-07-24 |
| TW330230B (en) | 1998-04-21 |
| KR960014675A (en) | 1996-05-22 |
| CN1056438C (en) | 2000-09-13 |
| KR0169028B1 (en) | 1999-03-20 |
| JP3298335B2 (en) | 2002-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2777011B2 (en) | Surface-facing motor | |
| JP2001145300A (en) | Brushless motor | |
| JPH08223858A (en) | Inner rotor motor | |
| JPH08130859A (en) | Mounting structure of rotor | |
| JP3130966B2 (en) | Rotating machine | |
| JP3446373B2 (en) | Electric blower balance correction method | |
| JP3924912B2 (en) | Blower | |
| US11962224B2 (en) | Rotor, motor, fan, and electric vacuum cleaner or hand dryer | |
| JPH0914188A (en) | Balance correction method for motor-driven blower | |
| JPH07177713A (en) | Rotor for small-sized motor | |
| JPH09215283A (en) | Method for correcting rotor balance of electric air blower | |
| JP2916394B2 (en) | Electric motor | |
| JPH11146611A (en) | Balance correction for motor fan | |
| JP2001045723A (en) | Structure of adjusting balance of rotating body in rotating machine | |
| JPH1132464A (en) | Method for correcting balance of rotator | |
| JPH09318900A (en) | Dynamic pressure air bearing type polygon scanner | |
| JP2000002851A (en) | Polygon mirror scanner device | |
| JPH02304773A (en) | Spindle grounding structure and spindle production for disk device | |
| JP3571919B2 (en) | Polygon mirror scanner device | |
| JP2600602Y2 (en) | Rotor | |
| KR100269109B1 (en) | Spindle motor for disc player | |
| JPH1018998A (en) | Electric blower | |
| JPH0980346A (en) | Polygon mirror scanner motor | |
| JP2000161291A (en) | Balance correction device for electrically driven blower | |
| JP2000014077A (en) | Electric blower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080419 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090419 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090419 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100419 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110419 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120419 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120419 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130419 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140419 Year of fee payment: 12 |
|
| EXPY | Cancellation because of completion of term |