JPH0686500A - Motor - Google Patents

Motor

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Publication number
JPH0686500A
JPH0686500A JP23095192A JP23095192A JPH0686500A JP H0686500 A JPH0686500 A JP H0686500A JP 23095192 A JP23095192 A JP 23095192A JP 23095192 A JP23095192 A JP 23095192A JP H0686500 A JPH0686500 A JP H0686500A
Authority
JP
Japan
Prior art keywords
rotor
rotating shaft
cylindrical body
vibration
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.)
Pending
Application number
JP23095192A
Other languages
Japanese (ja)
Inventor
Ikuo Hata
郁夫 畑
Katsutoshi Kazama
勝利 風間
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP23095192A priority Critical patent/JPH0686500A/en
Publication of JPH0686500A publication Critical patent/JPH0686500A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To obtain a motor enabling reduction of transmission of the vibration of rotation of a rotor to a fan. CONSTITUTION:A rotating shaft 11 of a rotor 3 is formed of a cylindrical body 12 formed of a metal member, and of a damping body 13a fitted internally in the cylindrical body 12. The damping body 13 is formed by winding round a composite body spirally inside the cylindrical body 12 so that it is provided continuously to a winding end part 12b of the cylindrical body 12 formed by winding round a composite body prepared by sticking an elastic member 13a on a metal sheet 12a. In this construction, the vibration generated at the time of rotation of the rotor 3 is damped by the damping body 13 fitted internally to the rotating shaft 11. Thereby transmission of the vibration to a fan 7 fitted to the rotating shaft 11 can be reduced.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、電動機の防振構造に関
するもので、特に、ルームエアコン、給湯器、電気掃除
機等に使用される家庭用電気機器としての電動機に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-vibration structure of an electric motor, and more particularly to an electric motor as a household electric appliance used for room air conditioners, water heaters, vacuum cleaners and the like.

【0002】[0002]

【従来の技術】従来、家庭用電気機器にはインダクショ
ンファンモータ、ブラシレスファンモータ、整流子モー
タ等の電動機が使用されている。
2. Description of the Related Art Conventionally, electric motors such as induction fan motors, brushless fan motors and commutator motors have been used for household electric appliances.

【0003】以下、この種の電動機の従来例を図2に示
したDCブラシレスモータにより説明する。
A conventional example of this type of electric motor will be described below with reference to the DC brushless motor shown in FIG.

【0004】図に示したように、電動機1は、ステータ
2と、ロータ3と、ロータ3の回転軸4を枢支する軸受
5とで構成され、ロータ3には永久磁石6が配設されて
いる。回転軸4には一般にS38C,S45C等の炭素
鋼が使用されている。そして、回転軸4の端部にはファ
ン7がナット8により取付けられている。
As shown in the figure, an electric motor 1 is composed of a stator 2, a rotor 3, and a bearing 5 that pivotally supports a rotating shaft 4 of the rotor 3, and a permanent magnet 6 is arranged on the rotor 3. ing. Generally, carbon steel such as S38C and S45C is used for the rotating shaft 4. A fan 7 is attached to the end of the rotary shaft 4 with a nut 8.

【0005】[0005]

【発明が解決しようとする課題】このような剛体で構成
された回転軸4を有する電動機1の構成では、ステータ
2の回転磁界によってロータ3が回転する際、回転によ
って発生する振動が回転軸4を介してファン7に伝達さ
れ、ファン7が振動して不快な音を発生するという問題
があった。
In the structure of the electric motor 1 having the rotating shaft 4 formed of such a rigid body, when the rotor 3 is rotated by the rotating magnetic field of the stator 2, the vibration generated by the rotation causes the rotating shaft 4 to rotate. There is a problem that the fan 7 vibrates and generates an unpleasant sound.

【0006】この問題に対して従来は、簡易的な対策と
してファン7と回転軸4との間に防振ゴム9を介装し、
ファン7の共振により発生する不快音の低減を図ってい
た。
In the past, as a simple measure against this problem, an anti-vibration rubber 9 is provided between the fan 7 and the rotary shaft 4,
The unpleasant noise generated by the resonance of the fan 7 is reduced.

【0007】しかし、このような手段においても回転軸
4とファン7は直接接触しているため、ファン形状の違
い、あるいは、近年主流化しつつあるモータの回転数制
御を行うPWM制御駆動のファンモータでは十分にファ
ン7の共振を抑制することはできず、より効果的な対策
が求められていた。
However, even in such a means, since the rotary shaft 4 and the fan 7 are in direct contact with each other, the fan shape is different, or the fan motor is driven by PWM control for controlling the rotational speed of the motor which is becoming mainstream in recent years. However, the resonance of the fan 7 cannot be suppressed sufficiently, and more effective measures have been demanded.

【0008】本発明は上記課題を解決するもので、ロー
タの回転振動のファンへの伝達を低減することができる
電動機を提供することを目的としている。
The present invention has been made to solve the above problems, and an object of the present invention is to provide an electric motor capable of reducing the transmission of rotational vibration of a rotor to a fan.

【0009】[0009]

【課題を解決するための手段】本発明は上記目的を達成
するために、ロータの回転軸を、金属部材で形成された
円筒体と、前記円筒体に内装され金属部材と弾性部材と
を交互に積層して形成された制振体とで構成したもので
ある。
SUMMARY OF THE INVENTION In order to achieve the above object, the present invention has a rotor having a rotating shaft in which a cylindrical body formed of a metal member and a metal member and an elastic member provided inside the cylindrical body are alternately arranged. And a vibration damping body formed by laminating the same on the.

【0010】[0010]

【作用】上記構成において、回転軸となる円筒体内に金
属部材と弾性部材を積層して形成した制振体を内装した
ことにより、ロータの回転によって発生する振動を制振
体が吸収してファン取付部への振動の伝達を低減する。
In the above structure, the vibration damping body formed by laminating the metal member and the elastic member inside the cylindrical body which serves as the rotating shaft is incorporated, so that the vibration damping body absorbs the vibration generated by the rotation of the rotor and the fan is absorbed. Reduces the transmission of vibration to the mounting part.

【0011】[0011]

【実施例】以下、本発明の一実施例について図1を参照
しながら説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG.

【0012】なお、従来例に示したものと同一部品には
同じ符号を付して説明を省略する。図において、11は
ロータ3の回転軸で、金属部材で形成された円筒体12
と、円筒体12に内装された制振体13とで構成されて
いる。円筒体12と制振体13は、たとえば図1(b)
に示したように、金属シート12aに弾性部材13aを
付着した複合体を巻回して円筒体12を形成し、円筒体
12の巻回端部12bに連設して円筒体12内に複合体
を渦巻状に巻回し、渦巻状の金属シート12aと弾性部
材13aとを層状に積層して制振体13を形成してい
る。なお、弾性部材13aは、固体あるいは粘弾性を有
する液状体のいずれでもよい。また、円筒体12と制振
体13を別体にして、金属部材で形成した円筒体12に
金属部材と弾性部材とを同心的に、あるいは渦巻状に交
互に積層した制振体を内装して形成することもできる。
The same parts as those shown in the conventional example are designated by the same reference numerals, and the description thereof will be omitted. In the figure, 11 is a rotating shaft of the rotor 3, which is a cylindrical body 12 made of a metal member.
And a damping body 13 installed in the cylindrical body 12. The cylindrical body 12 and the damping body 13 are, for example, as shown in FIG.
As shown in FIG. 4, the composite body in which the elastic member 13a is attached to the metal sheet 12a is wound to form the cylindrical body 12, and the cylindrical body 12 is continuously provided to the winding end portion 12b. Is wound in a spiral shape, and the spiral metal sheet 12a and the elastic member 13a are laminated in layers to form the vibration damper 13. The elastic member 13a may be either a solid or a liquid material having viscoelasticity. In addition, the cylindrical body 12 and the vibration damping body 13 are separated from each other, and the vibration damping body in which the metal member and the elastic member are concentrically or spirally alternately laminated is provided in the cylindrical body 12 formed of the metal member. Can also be formed.

【0013】上記構成において、ステータ2の回転磁界
によってロータ3が回転する際、永久磁石6に生じるゴ
ギング力の変動でロータ3に振動が発生しても、回転軸
11に配設されている制振体13がその振動を吸収して
減衰し、回転軸11に取付けられたファン7への振動の
伝達を低減させる。これによりファン7との共振をなく
し不快な音の発生をなくすることができる。
In the above structure, when the rotor 3 is rotated by the rotating magnetic field of the stator 2, even if the rotor 3 vibrates due to the fluctuation of the gogging force generated in the permanent magnet 6, it is arranged on the rotating shaft 11. The vibrating body 13 absorbs and attenuates the vibration, and reduces the transmission of the vibration to the fan 7 attached to the rotating shaft 11. As a result, resonance with the fan 7 can be eliminated and generation of unpleasant sound can be eliminated.

【0014】[0014]

【発明の効果】以上の実施例の説明から明らかなように
本発明によれば、ロータの回転軸を金属部材で形成され
た円筒体と、円筒体に内装された制振体とで構成したこ
とにより、ロータの回転時に発生するロータの振動を制
振体が吸収して減衰させ、これにより回転軸に取付けら
れたファンへの振動の伝達が低減し、ファンの共振をな
くして不快な音の発生をなくすることができる。
As is apparent from the above description of the embodiments, according to the present invention, the rotating shaft of the rotor is composed of a cylindrical body formed of a metal member and a vibration damping body incorporated in the cylindrical body. As a result, the vibration suppressor absorbs and damps the rotor vibration that occurs when the rotor rotates, which reduces the transmission of vibration to the fan mounted on the rotating shaft and eliminates fan resonance, resulting in unpleasant noise. Can be eliminated.

【図面の簡単な説明】[Brief description of drawings]

【図1】(a)は本発明の一実施例の電動機の側断面図 (b)は同電動機における回転軸の正面断面図FIG. 1A is a side sectional view of an electric motor according to an embodiment of the present invention, and FIG. 1B is a front sectional view of a rotating shaft in the electric motor.

【図2】従来例の電動機の側断面図FIG. 2 is a side sectional view of a conventional electric motor.

【符号の説明】 1 電動機 2 ステータ 3 ロータ 5 軸受 11 回転軸 12 円筒体 12a 金属シート(金属部材) 12b 巻回端部 13 制振体 13a 弾性部材[Explanation of reference numerals] 1 electric motor 2 stator 3 rotor 5 bearing 11 rotating shaft 12 cylindrical body 12a metal sheet (metal member) 12b winding end portion 13 damping body 13a elastic member

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】ステータと、ロータと、前記ロータの回転
軸を枢支する軸受とを備え、前記回転軸を金属部材で形
成された円筒体と、前記円筒体に内装され金属部材と弾
性部材とを交互に積層して形成された制振体とで構成し
た電動機。
1. A cylindrical body comprising a stator, a rotor, and a bearing for pivotally supporting a rotating shaft of the rotor, the rotating shaft being formed of a metal member, and a metal member and an elastic member provided inside the cylindrical member. An electric motor composed of a damping body formed by alternately stacking and.
【請求項2】ステータと、ロータと、前記ロータの回転
軸を枢支する軸受とを備え、前記回転軸を金属シートに
弾性部材を付着した複合体を巻回して形成された円筒体
と、前記円筒体の巻回端部に連設されて前記円筒体内に
層状に巻回された制振体とで構成した電動機。
2. A cylindrical body, comprising a stator, a rotor, and a bearing that pivotally supports a rotating shaft of the rotor, the rotating shaft being formed by winding a composite body in which an elastic member is attached to a metal sheet. An electric motor, comprising: a damping body that is continuously provided on a winding end portion of the cylindrical body and is wound in layers in the cylindrical body.
【請求項3】弾性部材を粘弾性液状体とした請求項2記
載の電動機。
3. The electric motor according to claim 2, wherein the elastic member is a viscoelastic liquid material.
JP23095192A 1992-08-31 1992-08-31 Motor Pending JPH0686500A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23095192A JPH0686500A (en) 1992-08-31 1992-08-31 Motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23095192A JPH0686500A (en) 1992-08-31 1992-08-31 Motor

Publications (1)

Publication Number Publication Date
JPH0686500A true JPH0686500A (en) 1994-03-25

Family

ID=16915878

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23095192A Pending JPH0686500A (en) 1992-08-31 1992-08-31 Motor

Country Status (1)

Country Link
JP (1) JPH0686500A (en)

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