JPH03235640A - Vibration-proof motor - Google Patents
Vibration-proof motorInfo
- Publication number
- JPH03235640A JPH03235640A JP3085290A JP3085290A JPH03235640A JP H03235640 A JPH03235640 A JP H03235640A JP 3085290 A JP3085290 A JP 3085290A JP 3085290 A JP3085290 A JP 3085290A JP H03235640 A JPH03235640 A JP H03235640A
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- output shaft
- fan
- bearing
- housing
- 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
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Motor Or Generator Frames (AREA)
Abstract
Description
【発明の詳細な説明】 産業上の利用分野 本発明は騒音・振動を低減させる防振モータに関する。[Detailed description of the invention] Industrial applications The present invention relates to a vibration-proof motor that reduces noise and vibration.
従来の技術
近年、機器の静音化からこれに組みこまれるモータには
防振策をほどこすようになってきている。BACKGROUND OF THE INVENTION In recent years, in order to make equipment quieter, anti-vibration measures have been applied to the motors incorporated into the equipment.
従来この種のモータは第３図に示すように、モータ１に
ファン１１などが取付けられる場合、回転子２と固定子
３との間に働く電磁気力により回転方向に振動トルクを
発生させ、回転子軸４を介してファン１１に振動が伝達
する。この振動防止のためにファン１１のハブ１２とボ
ス１５の間に防振ゴム１４を介して軸端に固定ナツト１
３で締めっける方法が一般に用いられている。この場合
、モータ１の回転方向の振動源である振動周波数は電源
周波数の２倍の振動、つまり５０（Ｈｚ）の地域におい
ては１００（Ｈｚ）の撮動周波数となり、この振動の伝
達防止には、回転子２とファン１１００
のねじりの固有振動数を通常 （Ｈｚ ）以下に（
してお（必要がある。したがって固有振動数を低（する
ために必然的に防振ゴム１４は軟らかい構造となってい
た。Conventionally, this type of motor generates vibration torque in the rotational direction by electromagnetic force acting between the rotor 2 and stator 3 when a fan 11 or the like is attached to the motor 1, as shown in FIG. Vibrations are transmitted to the fan 11 via the child shaft 4. To prevent this vibration, a fixing nut 1 is inserted between the hub 12 and the boss 15 of the fan 11 and attached to the shaft end via a vibration isolating rubber 14.
The method of tightening with 3 is generally used. In this case, the vibration frequency that is the vibration source in the rotational direction of the motor 1 is twice the power supply frequency, that is, in an area where the frequency is 50 (Hz), the imaging frequency is 100 (Hz), and in order to prevent the transmission of this vibration, It is necessary to lower the torsional natural frequency of the rotor 2 and fan 1100 to below normal (Hz).Therefore, in order to lower the natural frequency, the vibration isolating rubber 14 must have a soft structure. It had become.
発明が解決しようとする課題
ところで第４図に示すように、ファン装置においてはフ
ァン１１とエアガイド１６とに隙間δが設けられている
が、ファン１１のアンバランスが大きいときなど、防振
ゴム１４が軟らかいとファン１１の半径方向の振れが太
き（なり、回転中にファン１１がエアガイド１６に接触
したり、輸送中も振動によりファン１１とエアガイド１
６が接触し傷を生じるなどの欠具があった。Problem to be Solved by the Invention By the way, as shown in FIG. 4, in the fan device, a gap δ is provided between the fan 11 and the air guide 16. If the fan 14 is soft, the radial deflection of the fan 11 will be large (this will cause the fan 11 to come into contact with the air guide 16 during rotation, and the fan 11 and air guide 1 may be damaged due to vibration during transportation).
There were some missing parts, such as 6 touching each other and causing scratches.
本発明は上記課題を解決するもので、ファンなどとの共
振を防止し、低騒音化を図った防振モータを提供するこ
とを目的としている。The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a vibration-proof motor that prevents resonance with a fan or the like and achieves low noise.
課題を解決するための手段
この目的を達成するために本発明は、回転子軸の回転方
向の振動を出力軸に伝達させないように回転子軸に対し
出力軸を分離し、回転子軸と出力軸を防振ゴムなどの弾
性体を介在させて連結し、前記出力軸の筒状部をモータ
ブラケットのハウジング部外周に軸受を介して回動自在
に嵌め合わせたものである。Means for Solving the Problems In order to achieve this object, the present invention separates the output shaft from the rotor shaft so that vibrations in the rotational direction of the rotor shaft are not transmitted to the output shaft, and separates the output shaft from the rotor shaft. The shafts are connected via an elastic body such as vibration-proof rubber, and the cylindrical portion of the output shaft is rotatably fitted to the outer periphery of the housing portion of the motor bracket via a bearing.
作用
本発明は上記した構成により、回転方向には回動自在に
可動し、半径方向には軸受のため振れ動きができないよ
うに拘束されている。したがって回転子軸に発生してい
る回転方向の振動を出力軸に伝達させないために介在さ
れている防振ゴムなどの弾性体は、トルク伝達の働らき
をすれば防振性能の面より十分に軟らかい構造のものと
することが可能となる。Function The present invention has the above-described configuration, and is rotatably movable in the rotational direction, but is restrained from swinging in the radial direction due to bearings. Therefore, elastic bodies such as anti-vibration rubber, which are interposed to prevent the rotational vibrations occurring on the rotor shaft from being transmitted to the output shaft, have sufficient vibration-proofing performance if they act as torque transmitters. It becomes possible to have a soft structure.
実施例
以下、本発明の一実施例について第１図を参照しながら
説明する。なお、従来例と同一のものは同一の番号を使
用する。EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIG. Note that the same numbers are used for the same parts as in the conventional example.
図に示すように、出力軸８は一端部にねじ部を有し、他
端に筒状部８′を有している。この出力軸８のねじ部仰
りには直接ファン１１を設けたハブ１２を挿入し、固定
ナツト１３で一体に締め付けている。前記出力軸８の他
端の筒状部８′はブラケット５の中央部を凸状に形成し
たハウジング部５ａの外周に軸受７を介して回転自在に
はめ合わせている。前記出力軸８と回転子軸４端の間に
は回転子軸４の回転トルクを伝達するトルク伝達板１０
を加硫接着剤などて一体に結合した、たとえば防振ゴム
からなる弾性体９を設けて前記両軸を連結した構成とし
ている。As shown in the figure, the output shaft 8 has a threaded portion at one end and a cylindrical portion 8' at the other end. A hub 12 provided with a fan 11 is directly inserted into the threaded portion of the output shaft 8, and is tightened together with a fixing nut 13. A cylindrical portion 8' at the other end of the output shaft 8 is rotatably fitted via a bearing 7 to the outer periphery of a housing portion 5a, which is a convex central portion of the bracket 5. A torque transmission plate 10 is provided between the output shaft 8 and the end of the rotor shaft 4 to transmit the rotational torque of the rotor shaft 4.
An elastic body 9 made of anti-vibration rubber, for example, which is integrally bonded with a vulcanized adhesive or the like, is provided to connect the two shafts.
前記弾性体９は回転子軸４の所要のトルクを伝ブ！する
力に耐えること以外は、防振性能面より可能な限り軟ら
かくしている。通常１００（Ｈｚ）の振動数を防振する
場合、回転子２とファン１１との振動系の固有振動数は
１００ＸＩ／−、’２’（Ｈ７）よりおおよそ７０（Ｈ
ｚ）以下にしておく必要があり、その値を低くするほど
効果は大となる。ただし、弾性体９が軟らかすぎる七フ
ァン１１のふらつきなど出力軸８の支持面で不安定とな
る。本実施例はファン１１の半径方向に外力が加わって
も出力軸８が軸受７を介してハウジングｔＪ５ａに嵌め
合わされているので、ファン１１がその半径方向に移動
することを防止している。The elastic body 9 transmits the required torque of the rotor shaft 4! Other than being able to withstand the force that is applied to it, the material is made as soft as possible in terms of anti-vibration performance. Normally, when vibration isolating at a frequency of 100 (Hz), the natural frequency of the vibration system of the rotor 2 and fan 11 is 100XI/-, approximately 70 (H7) from '2' (H7).
z) or less, and the lower the value, the greater the effect. However, the elastic body 9 is too soft, causing instability on the support surface of the output shaft 8, such as wobbling of the seventh fan 11. In this embodiment, even if an external force is applied in the radial direction of the fan 11, the output shaft 8 is fitted into the housing tJ5a via the bearing 7, so that the fan 11 is prevented from moving in the radial direction.
したがってこのような構成のため、回転方向の回転子２
からの振動の伝達を防止し、かつファン１１のアンバラ
ンスなどて半径方向に力が加わっても半径方向に移動す
ることはな（、安定した支持のモータを提供することが
できる。Therefore, due to this configuration, the rotor 2 in the rotation direction
It is possible to provide a motor with stable support, which prevents vibrations from being transmitted from the fan 11 and does not move in the radial direction even if force is applied in the radial direction due to unbalance of the fan 11 or the like.
次に、本発明の他の実施例を第２図に示す。この実施例
の前記実施例との相違する点は、出力軸８の他端部に装
着した軸受７のハウジング５ａに嵌め合わせる位置を変
えたものである。すなわち、図に示すように、前記ハウ
ジング５ａの先端に段部５ｂを突設して、この段部５ｂ
の外周に前記軸受７を固定し、前記出力軸８の筒状部８
′を嵌め合わせて前記と同様の効果を得るようにしてい
る。Next, another embodiment of the present invention is shown in FIG. The difference between this embodiment and the previous embodiment is that the position of the bearing 7 fitted to the other end of the output shaft 8 in which it is fitted into the housing 5a has been changed. That is, as shown in the figure, a stepped portion 5b is provided protrudingly from the tip of the housing 5a, and this stepped portion 5b
The bearing 7 is fixed to the outer periphery of the cylindrical portion 8 of the output shaft 8.
' are fitted together to obtain the same effect as above.
また、ハウジング部５ａの外周に破線で示したゴム製な
どの弾性材１７を介してモータベース１８に装着して使
用すれば、より一層の防振効果を得ることができる。Moreover, if the motor base 18 is attached to the outer periphery of the housing part 5a via an elastic material 17 made of rubber or the like shown by a broken line, a further vibration-proofing effect can be obtained.
発明の効果
以上の実施例の説明からも明らかなように本発明の防振
モータによれば回転子軸と出力軸の間にゴム製などの弾
性体を装着して連結し、出力軸の筒状部をハウジングに
軸受を介して回動自在に嵌め合わせしているので、出力
軸の回動の不安定さがなく、回転方向の振動に対して防
振効果を最大限に活用できるものであり、ファン負荷あ
るいは説明を略したがベルト駆動など出力軸の半径方向
の一方向に力が加わる場合なども安定した支持を行い、
かつ騒音を低減することができ実用的価値の大きな効果
がある。Effects of the Invention As is clear from the description of the embodiments above, according to the vibration-proof motor of the present invention, an elastic body made of rubber or the like is attached and connected between the rotor shaft and the output shaft, and the cylinder of the output shaft is Since the shaped part is rotatably fitted into the housing via a bearing, there is no instability in the rotation of the output shaft, and the vibration-proofing effect can be maximized against vibrations in the direction of rotation. It provides stable support even when force is applied in one direction in the radial direction of the output shaft, such as fan load or belt drive, although the explanation is omitted.
In addition, noise can be reduced, which has great practical value.
第１図は本発明の防振モータの一実施例を示す要部切欠
断面図、第２図は同化の実施例を示す要部切欠断面１、
第３図は従来のモータとファンとの防振構造を示した一
部切欠断面図、第４図はファンとエアガイドとの位置関
係を示す説明図である。
４・・・・・・回転子軸、５・・・・・・ブラケット、
５ａ・・・・・／）ウシング、７・・・・・・軸受、８
・・・・・・出力軸、８′・・・・・筒状部、９・・・
・・・弾性体。FIG. 1 is a cutaway sectional view of the main part showing an embodiment of the vibration-proof motor of the present invention, FIG. 2 is a cutaway sectional view of the main part 1 showing an embodiment of the assimilation
FIG. 3 is a partially cutaway sectional view showing a conventional vibration isolation structure between a motor and a fan, and FIG. 4 is an explanatory diagram showing the positional relationship between the fan and an air guide. 4...Rotor shaft, 5...Bracket,
5a.../) Ussing, 7...Bearing, 8
...Output shaft, 8'...Cylindrical part, 9...
...Elastic body.
Claims (1)
前記出力軸の端部の筒状部をブラケットのハウジング外
周部に軸受を介して回動自在に嵌め合せた防振モータ。An elastic body is interposed at the end of the rotor shaft to connect the output shaft,
A vibration-proof motor in which a cylindrical portion at an end of the output shaft is rotatably fitted to an outer peripheral portion of a housing of a bracket via a bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3085290A JPH03235640A (en) | 1990-02-09 | 1990-02-09 | Vibration-proof motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3085290A JPH03235640A (en) | 1990-02-09 | 1990-02-09 | Vibration-proof motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03235640A true JPH03235640A (en) | 1991-10-21 |
Family
ID=12315243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3085290A Pending JPH03235640A (en) | 1990-02-09 | 1990-02-09 | Vibration-proof motor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03235640A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007117848A (en) * | 2005-10-26 | 2007-05-17 | Mazda Motor Corp | Exhaust gas purification catalyst |
-
1990
- 1990-02-09 JP JP3085290A patent/JPH03235640A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007117848A (en) * | 2005-10-26 | 2007-05-17 | Mazda Motor Corp | Exhaust gas purification catalyst |
| JP4687389B2 (en) * | 2005-10-26 | 2011-05-25 | マツダ株式会社 | Exhaust gas purification catalyst |
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