JPS5819360Y2 - Blower blade attachment device - Google Patents
Blower blade attachment deviceInfo
- Publication number
- JPS5819360Y2 JPS5819360Y2 JP1977159022U JP15902277U JPS5819360Y2 JP S5819360 Y2 JPS5819360 Y2 JP S5819360Y2 JP 1977159022 U JP1977159022 U JP 1977159022U JP 15902277 U JP15902277 U JP 15902277U JP S5819360 Y2 JPS5819360 Y2 JP S5819360Y2
- Authority
- JP
- Japan
- Prior art keywords
- boss body
- blower blade
- absorbing member
- vibration
- rotating shaft
- 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
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【考案の詳細な説明】
本考案は送風羽根の共振を防止するようにした送風羽根
取付装置に関する。[Detailed Description of the Invention] The present invention relates to a blower blade mounting device that prevents resonance of the blower blade.
一般に扇風機や換気扇等ではその送風羽根をモータの回
転軸に一体的に直結しているが、モータ等の振動と送風
羽根自体の振動とが相加わった場合即ち共振現象を生じ
た場合には非常に高い異常音を発生し種々の悪影響を及
ぼす。Generally, in electric fans, ventilation fans, etc., the blower blades are integrally and directly connected to the rotating shaft of the motor, but when the vibrations of the motor etc. and the vibrations of the blower blades themselves are combined, that is, when a resonance phenomenon occurs, it can be extremely dangerous. generates high-pitched abnormal noise and has various negative effects.
このような現象は前記送風羽根の回転速度を制御する場
合に多く発生し、例えばリアクトル線輪を用い、これの
いわゆるタップ切換によって生ずる電圧降下を利用して
速度制御を行う場合、上記タップ切換により電圧波形に
乱れを生じ、或いは速度制御を位相制御によって行なう
場合に電圧波形が変化し、その高周波成分によりモータ
が振動し、これが送風羽根の共振を惹起する主たる原因
となる。Such a phenomenon often occurs when controlling the rotational speed of the blower blades. For example, when using a reactor coil and controlling the speed by utilizing the voltage drop caused by the so-called tap switching, the above-mentioned tap switching When a disturbance occurs in the voltage waveform or when speed control is performed by phase control, the voltage waveform changes, and its high frequency component causes the motor to vibrate, which is the main cause of resonance in the blower blades.
特に上記共振時の異常音は純音性であるため他の騒音と
は別異の音を発生し非常に耳ぎわっであると共に不快感
を与えるものである。In particular, since the abnormal sound at the time of resonance is pure tone, it generates a sound that is different from other noises, and is extremely annoying and unpleasant.
本考案は上記事情に鑑みてなされたもので、送風羽根の
共振及び該共振による異常音の発生を防止し得る送風羽
根取付装置を提供することを目的とする。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a blower blade mounting device that can prevent the resonance of the blower blades and the generation of abnormal noise due to the resonance.
以下本考案を換気扇に適用した一実施例につき第１図乃
至第３図を参照して説明する。An embodiment in which the present invention is applied to a ventilation fan will be described below with reference to FIGS. 1 to 3.
１は図示しない室の換気用開口部に取付けられる換気扇
本体で、ベルマウス２を有すると共に、モータ取付枠３
を有している。Reference numeral 1 denotes a ventilation fan body that is attached to a ventilation opening in a room (not shown), and has a bell mouth 2 and a motor mounting frame 3.
have.
４は前記モータ取付枠３に取付けたモータで、その回転
軸５は先端部を径小にしてこの径小部分にねじ部６を螺
設すると共に、略中央部にキー溝７を形設し、また基端
部には径大な段部５ａを有する。Reference numeral 4 denotes a motor attached to the motor mounting frame 3, and its rotating shaft 5 has a tip with a reduced diameter, and a threaded portion 6 is screwed into this small diameter portion, and a keyway 7 is formed approximately in the center. , and has a large-diameter stepped portion 5a at the base end.
８は前記回転軸５にこれの段部５ａを押し当てるように
嵌入した当て部材たる当て板である。Reference numeral 8 denotes a backing plate which is a backing member and is fitted onto the rotating shaft 5 so as to press the stepped portion 5a thereof.
９は前記回転軸５にこれより大きな内径を有して前記当
て板８に隣接するように遊挿した振動吸収部材たる波形
環状をなすばね鋼製の板ばね（第３図参照）で、回転軸
５の軸方向に対し弾性変形可能である。Reference numeral 9 denotes a corrugated ring-shaped spring steel leaf spring (see Fig. 3), which is a vibration absorbing member having a larger inner diameter and loosely inserted into the rotating shaft 5 so as to be adjacent to the backing plate 8. It is elastically deformable in the axial direction of the shaft 5.
１０は前記回転輪５に取付けられる送風羽根で、これは
ボス体１１の外周に取付鍔１２を例えば溶接により固着
し、該取付鍔１２に複数枚の羽根板１３をリベット１４
により取付けた構成であり、ボス体１１には嵌合孔１５
を形威すると共にその内面に軸方向に延びるキー溝１６
を形成している。Reference numeral 10 denotes a blower blade attached to the rotary wheel 5. A mounting collar 12 is fixed to the outer periphery of the boss body 11 by, for example, welding, and a plurality of blade plates 13 are attached to the mounting collar 12 with rivets 14.
The boss body 11 has a fitting hole 15.
A key groove 16 extending in the axial direction on the inner surface thereof.
is formed.
而して、前記回転軸５のキー溝７にキー材１７を嵌入し
た上で、送風羽根１０のボス体１１を回転軸５に嵌入し
、抜止部材たるナツト１８を前記回転軸５のねじ部６に
螺着し、以てボス体１１の回転軸５からの抜脱を阻止す
ると共に、ボス体１１を板ばね９の弾性付勢力をもって
ナツト１８方向に付勢する。After fitting the key material 17 into the key groove 7 of the rotating shaft 5, the boss body 11 of the blower blade 10 is fitted into the rotating shaft 5, and the nut 18, which is a retaining member, is inserted into the threaded portion of the rotating shaft 5. 6, thereby preventing the boss body 11 from being removed from the rotating shaft 5, and biasing the boss body 11 toward the nut 18 with the elastic biasing force of the leaf spring 9.
この状態で、ボス体１１は、キー材１７により回転軸５
から回転力が伝達され得るようになっており、且つ軸方
向に移動可能である。In this state, the boss body 11 is attached to the rotating shaft 5 by the key material 17.
Rotational force can be transmitted from the shaft, and the shaft can be moved in the axial direction.
１９は前記当て板８の外周囲に前記ボス体１１の該当て
板８との対向面即ち図示右側の端面１１ ａに対向する
ように一体に突設した環状の突部で、これはボス体１１
の端面１１ ａと所定の間隙Ａを存して対向し、また前
記板ばね９をこれの外方より囲撓している。Reference numeral 19 denotes an annular protrusion integrally provided around the outer periphery of the backing plate 8 so as to face the surface of the boss body 11 facing the corresponding plate 8, that is, the end face 11a on the right side in the figure. 11
It faces the end face 11a of the plate with a predetermined gap A therebetween, and also surrounds the leaf spring 9 from the outside thereof.
さてモータ４が通電されて起動すると回転軸５の回転力
はキー材１７を介してボス体１１に伝達され、送風羽根
１０全体が回転軸５と一体的に回転する。Now, when the motor 4 is energized and started, the rotational force of the rotary shaft 5 is transmitted to the boss body 11 via the key material 17, and the entire blower blade 10 rotates integrally with the rotary shaft 5.
ところで例えば送風羽根１０の回転速度を変換すべくモ
ータ４のタップ切換え、或いは位相制御による電圧制御
を行うと、これにより電圧波形に乱れを生じ、その高周
波成分によりモータ４が振動する。By the way, for example, when the taps of the motor 4 are changed or the voltage is controlled by phase control in order to convert the rotational speed of the blower blade 10, the voltage waveform is disturbed, and the motor 4 vibrates due to its high frequency component.
しかしながら本実施例によれば、送風羽根１０のボス体
１１と当て板８との間に板ばね９を介在させたから、鉄
板ばね９の弾性変形による振動吸収作用によってモータ
４の振動が吸収され、その振動が送風羽根１０に伝わる
ことを防止する。However, according to the present embodiment, since the plate spring 9 is interposed between the boss body 11 of the blower blade 10 and the backing plate 8, the vibration of the motor 4 is absorbed by the vibration absorption effect due to the elastic deformation of the iron plate spring 9. This vibration is prevented from being transmitted to the blower blade 10.
従って送風羽根１０がモータ４の振動に共振する虞はな
く、不快な異常音を発生することもない。Therefore, there is no possibility that the blower blade 10 resonates with the vibration of the motor 4, and no unpleasant abnormal noise is generated.
ところでモータ４の起動時においてはモータ４の振動特
に軸方向の振動が大であり、この場合に、該振動に起因
するボス体１１の当て板８方向への位置ずれにより板ば
ね９が過度の変形即ち許容変形範囲を越えた変形を強い
られ破損することが懸念される。By the way, when the motor 4 is started, the vibration of the motor 4, particularly in the axial direction, is large, and in this case, the leaf spring 9 is caused to be excessively moved due to the displacement of the boss body 11 in the direction of the backing plate 8 due to the vibration. There is a concern that the product may be forced to deform, that is, deform beyond the allowable deformation range, resulting in damage.
その点本実施例によれば、ボス体１１は、間１ｓ５！Ａ
により許される範囲即ち板ばね９の許容変形範囲で回転
軸５に対し軸方向に動き得るようになっており、該ボス
体１１が板ばね９の許容変形範囲を越えて当て板８方向
に移動しようとすると相対的に突部１９がボス体１１の
端面１１ ａに当接し、これによりボス体１１の接近移
動が阻止されるから、板ばね９が許容変形範囲を越えた
変形を強いられることがなく、従って板ばね９が破損す
る虞は全くない。In this respect, according to this embodiment, the boss body 11 has a gap of 1s5! A
The boss body 11 can move in the axial direction with respect to the rotary shaft 5 within the range allowed by, that is, the allowable deformation range of the leaf spring 9, and the boss body 11 moves in the direction of the backing plate 8 beyond the allowable deformation range of the leaf spring 9. If an attempt is made to do so, the protrusion 19 will come into relative contact with the end surface 11a of the boss body 11, and this will prevent the boss body 11 from moving closer, so the leaf spring 9 will be forced to deform beyond the allowable deformation range. Therefore, there is no possibility that the leaf spring 9 will be damaged.
さらに特に本実施例によれば、板ばね９を囲撓する当て
板８の突部１９が鉄板ばね９を回転軸５の軸心からずれ
ないように略同心位置に保持するから、板ばね９の弾性
付勢力が片寄ることなく均一にボス体１１に作用し、振
動吸収作用の安定化を図ることができる。More particularly, according to this embodiment, the protrusion 19 of the backing plate 8 that surrounds the leaf spring 9 holds the iron plate spring 9 in a substantially concentric position so as not to deviate from the axis of the rotating shaft 5. The elastic biasing force acts uniformly on the boss body 11 without being biased, and the vibration absorption effect can be stabilized.
また、突部１９を環状に形成したので、ボス体１１の端
面１１ ａと当て板８及び該突部１９とで板ばね９部分
を包囲することができ、よって該包囲空間同郡ち当て板
８とボス体１１の端面１１ ａとの間へのグリース等の
充填が可能であり、これにより回転軸５の防錆を図り得
て該回転軸５とボス体１１との間における所謂さび付き
を防止し得、よって保守点検時等における回転軸５に対
する送風羽根１０の抜脱及び挿着を容易ならしめ得、し
かも板ばね９の防錆も図り得る。In addition, since the protrusion 19 is formed in an annular shape, the end face 11a of the boss body 11, the backing plate 8, and the protrusion 19 can surround the leaf spring 9, so that the surrounding space is the same as the backing plate. 8 and the end surface 11 a of the boss body 11 , it is possible to fill the space between the rotating shaft 5 and the end face 11 a of the boss body 11 with grease or the like, thereby preventing rust on the rotating shaft 5 and preventing so-called rusting between the rotating shaft 5 and the boss body 11 . Therefore, it is possible to easily remove and insert the blower blade 10 into and out of the rotating shaft 5 during maintenance and inspection, and furthermore, it is possible to prevent the leaf spring 9 from rusting.
尚、上記実施例では突部１９を当て板８に設けたが、第
２図と同上部分には同一符号を付して示す第４図の突部
２０のように、ボス体１１の端面１１ ａ周縁に当て板
８に所定の間隙を存して対向するように設けてもよく、
要は振動吸収部材を挾んで対向するボス体及び当て部材
の対向面のうちの一方に設ければよい。In the above embodiment, the protrusion 19 was provided on the backing plate 8, but as in the protrusion 20 in FIG. It may be provided on the periphery of a to face the backing plate 8 with a predetermined gap,
In short, it may be provided on one of the facing surfaces of the boss body and the abutment member, which face each other with the vibration absorbing member in between.
また、上記実施例では振動吸収部材として波形に形成し
た環状の板ばね９を用いたが、第２図と同一部分には同
一符号を付して示す第５図のように、例えばゴム製の弾
性体２１を振動吸収部材として用いてもよく、この場合
、該弾性体２１は当て板８により保護されるから、弾性
体２１に悪影響を及ぼすような環境条件下においても十
分使用に耐え得るものとなる。Further, in the above embodiment, an annular plate spring 9 formed in a corrugated shape was used as a vibration absorbing member, but as shown in FIG. 5, where the same parts as in FIG. The elastic body 21 may be used as a vibration absorbing member, and in this case, the elastic body 21 is protected by the backing plate 8, so that it can withstand use even under environmental conditions that adversely affect the elastic body 21. becomes.
その他本考案は上記し且つ図面に示す実施例のみに限定
されるものでなく、要旨を逸脱しない範囲で種々変形し
て実施できる。In addition, the present invention is not limited to the embodiments described above and shown in the drawings, but can be implemented with various modifications without departing from the gist.
本考案は以上説明したように、送風羽根のボス体と当て
部材との間に弾性変形可能な振動吸収部材を設けたので
、送風羽根の共振及び該共振による異常音の発生を防止
し得、又、ボス体及び当て部材の対向面のうち一方に他
方の対向面と所定の間隙を存するように突部を設けたの
で、モータの起動時における振動吸収部材の破損も防止
し得、しかも突部を環状に形成して上記対向両面と該突
部との間で振動吸収部材部分を包囲する様にしたので、
該包囲空間内へのグリース等の充填を可能になし得、こ
れにて回転軸の防錆を図ることができて回転軸とボス体
とのさび付きを防止でき、よつて保守点検時等における
回転軸に対する送風羽根の抜脱及び挿着を容易ならしめ
得、さらには、振動吸収部材を板ばねにて構成するとき
には鉄板ばねの防錆も図り得、又振動吸収部材をゴム等
にて構成するときにはこれを周囲環境から保護し得る利
点がある等の優れた効果を奏する。As explained above, the present invention provides an elastically deformable vibration absorbing member between the boss body of the blower blade and the backing member, so that the resonance of the blower blade and the generation of abnormal noise due to the resonance can be prevented. Furthermore, since the protrusion is provided on one of the opposing surfaces of the boss body and the backing member so as to leave a predetermined gap with the other opposing surface, it is possible to prevent damage to the vibration absorbing member when starting the motor. Since the portion is formed into an annular shape so as to surround the vibration absorbing member portion between the opposing surfaces and the protrusion,
It is possible to fill the enclosed space with grease, etc., and thereby the rotating shaft can be prevented from rusting, and rusting between the rotating shaft and the boss body can be prevented. The blower blade can be easily removed and inserted into the rotating shaft, and furthermore, when the vibration absorbing member is made of a plate spring, the iron plate spring can be prevented from rusting, and the vibration absorbing member is made of rubber or the like. When doing so, it has excellent effects such as being able to protect it from the surrounding environment.
第１図乃至第３図は本考案を換気扇に適用した一実施例
を示し、第１図は換気扇全体の斜視図、第２図は要部の
拡大縦断面図、第３図は板ばねを単体で示す斜視図であ
り、第４図及び第５図は夫々異なる他の実施例を示す第
２図相当図である。
図面中、４はモータ、５は回転軸、８は当て板（当て部
材）、９は板ばね（振動吸収部材）、１０は送風羽根、
１１はボス体、１３は羽根板、１８はナツト（抜止部材
）、１９及び２０は突部、２１は弾性体（振動吸収部材
）である。Figures 1 to 3 show an embodiment in which the present invention is applied to a ventilation fan. Figure 1 is a perspective view of the entire ventilation fan, Figure 2 is an enlarged vertical sectional view of the main parts, and Figure 3 is a leaf spring. It is a perspective view showing a single unit, and FIGS. 4 and 5 are views corresponding to FIG. 2 showing other different embodiments. In the drawing, 4 is a motor, 5 is a rotating shaft, 8 is a backing plate (backing member), 9 is a leaf spring (vibration absorbing member), 10 is a blower blade,
11 is a boss body, 13 is a wing plate, 18 is a nut (retaining member), 19 and 20 are protrusions, and 21 is an elastic body (vibration absorbing member).
Claims (1)
体を回転力伝達可能で且つ軸方向に移動可能に設けた送
風羽根と、前記回転軸に設けられ前記送風羽根の前記回
転軸からの抜脱を阻止する抜止部材と、前記当て部材と
前記ボス体との間に介在された弾性変形可能な振動吸収
部材と、前記ボス体及び当て部材の対向面のうちの一方
に他方の対向面と所定の間隙を存して突設され前記振動
吸収部材の許容変形範囲を越える前記ボス体の前記当て
部材に対する接近移動を前記他方の対向面に当接するこ
とにより阻止する振動吸収部材保護用の環状の突部とを
具備して成る送風羽根取付装置。a support member provided on the rotational shaft of the motor; a blower blade provided on the rotational shaft so that the boss body can transmit rotational force and be movable in the axial direction; and a blower blade provided on the rotational shaft from the rotational shaft of the blower blade. an elastically deformable vibration absorbing member interposed between the abutment member and the boss body, and a vibration absorbing member interposed between the boss body and the abutment member, and a vibration absorbing member interposed between the boss body and the abutment member, and a A vibration-absorbing member protection device that protrudes with a predetermined gap from the surface and prevents the boss body from approaching the abutment member in a manner that exceeds the permissible deformation range of the vibration-absorbing member by coming into contact with the other opposing surface. A blower blade mounting device comprising: an annular protrusion;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977159022U JPS5819360Y2 (en) | 1977-11-25 | 1977-11-25 | Blower blade attachment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977159022U JPS5819360Y2 (en) | 1977-11-25 | 1977-11-25 | Blower blade attachment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5483607U JPS5483607U (en) | 1979-06-13 |
| JPS5819360Y2 true JPS5819360Y2 (en) | 1983-04-20 |
Family
ID=29151438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1977159022U Expired JPS5819360Y2 (en) | 1977-11-25 | 1977-11-25 | Blower blade attachment device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5819360Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58192145A (en) * | 1982-05-06 | 1983-11-09 | Toshiba Corp | Extended scroll system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50127208A (en) * | 1974-03-25 | 1975-10-07 |
-
1977
- 1977-11-25 JP JP1977159022U patent/JPS5819360Y2/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50127208A (en) * | 1974-03-25 | 1975-10-07 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5483607U (en) | 1979-06-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100300841B1 (en) | Motor Housing Casing Unit | |
| EP2134983B1 (en) | Damper | |
| US4793457A (en) | Snap-on dust shield for automotive compessor clutch | |
| JP2000283240A (en) | Flywheel assembly | |
| US4557360A (en) | Movable disc for electromagnetic clutch/brake | |
| JP2010515413A (en) | Device for holding an electric machine with vibration isolation | |
| JPS6152327B2 (en) | ||
| JPH066972B2 (en) | Gear damping device | |
| JPS5819360Y2 (en) | Blower blade attachment device | |
| JP2019011837A (en) | Vibration control member, fan motor and attachment structure | |
| JPH10159801A (en) | Sound damping motor and shield | |
| JP3272044B2 (en) | Fan motor support device | |
| JP2015206364A (en) | electric fan | |
| US5726518A (en) | Supporting device of relative moving element of vibration actuator or vibration motor | |
| JP6411062B2 (en) | Anti-vibration structure of rotating body | |
| US2083561A (en) | Internal combustion engine | |
| KR100526113B1 (en) | Damper for motor | |
| JPS5922317Y2 (en) | vane attachment device | |
| JP4587904B2 (en) | Power transmission device | |
| KR950006323Y1 (en) | Resonance-proof device for rotary head drum | |
| JP2017106563A (en) | Noise reduction device of pulley | |
| JPH03117141U (en) | ||
| JPH07163085A (en) | Rotary electric machine | |
| JPH06307661A (en) | Supporting device for fan motor | |
| JP2000170872A (en) | Drive plate for vehicle |