JPH02218893A - Miniature fan - Google Patents
Miniature fanInfo
- Publication number
- JPH02218893A JPH02218893A JP4052089A JP4052089A JPH02218893A JP H02218893 A JPH02218893 A JP H02218893A JP 4052089 A JP4052089 A JP 4052089A JP 4052089 A JP4052089 A JP 4052089A JP H02218893 A JPH02218893 A JP H02218893A
- Authority
- JP
- Japan
- Prior art keywords
- blade
- driving shaft
- electric motor
- drive shaft
- boss
- 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
- 230000002159 abnormal effect Effects 0.000 abstract description 7
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000000644 propagated effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、換気扇、空調機等に使用される小型送風機に
関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a small-sized blower used in ventilation fans, air conditioners, and the like.
従来の技術
従来この種の送風機は、一般に第３図および第４図に示
すように構成されていた。すなわち、ファンケーシング
１１の側板に電動機１２を固定し、その駆動軸１４に羽
根１３を固着し、かつ羽根１３をファンケーシング１１
で包囲している。そして、羽根１３の駆動軸１４への固
着は以下のようにして行われていた。羽根１３０羽根ボ
ス１アに駆動軸１４を、駆動軸１．４に係止したｙＩ）
ング１５が羽根ボス１７の端面に当接するところまで挿
入し、駆動軸１４の先端に形成したネジ部に、羽根締付
固定具１６を螺合し、羽根ボス１アの他端面に当接する
まで締付、このようにして羽根１３を駆動軸１４に固着
していた。BACKGROUND OF THE INVENTION Conventionally, this type of blower has generally been constructed as shown in FIGS. 3 and 4. That is, the electric motor 12 is fixed to the side plate of the fan casing 11, the blades 13 are fixed to the drive shaft 14, and the blades 13 are attached to the fan casing 11.
surrounded by. The blade 13 is fixed to the drive shaft 14 in the following manner. The drive shaft 14 is locked to the blade 130 blade boss 1a, and the drive shaft 1.4 is locked (yI)
Insert the blade screw 15 until it contacts the end surface of the blade boss 17, and screw the blade tightening fixture 16 into the threaded part formed at the tip of the drive shaft 14 until it contacts the other end surface of the blade boss 1a. In this way, the blade 13 was fixed to the drive shaft 14.
発明が解決しようとする課題
このような従来の構成では、以下のような課題があった
。すなわち、電動機１２の駆動軸１４と羽根ポヌ１７と
は１羽根締付固定具１ｅの剛体を介して接合されている
ので、電動機１２の駆動軸１４方向の振動が吸収されず
に羽根１３に伝わり、羽根１３から外部に大きな異常音
として伝播するという場合があった。Problems to be Solved by the Invention This conventional configuration has the following problems. That is, since the drive shaft 14 of the electric motor 12 and the vane ponu 17 are joined via the rigid body of the one-vane tightening fixture 1e, vibrations in the direction of the drive shaft 14 of the electric motor 12 are not absorbed but are transmitted to the vanes 13. , there were cases in which a large abnormal sound was propagated from the blade 13 to the outside.
本発明は、このような課題を解決するもので、電動機の
駆動軸方向の振動を羽根に伝えず、異常音の発生しない
、低騒音の小型送風機を実現することを目的とするもの
である。The present invention is intended to solve these problems, and aims to realize a small, low-noise blower that does not transmit vibrations in the direction of the drive shaft of the electric motor to the blades, and does not generate abnormal noise.
課題を解決するための手段
この課題を解決するために本発明は、羽根ボスに電動機
の駆動軸を嵌入し、羽根締付固定具を前記羽根ボスとの
間にスフリングを介在させて前記駆動軸に螺合し、前記
羽根を前記駆動軸に固着した構成としたものである。Means for Solving the Problems In order to solve this problem, the present invention includes fitting a drive shaft of an electric motor into a blade boss, interposing a suffling between a blade tightening fixture and the blade boss, and attaching the drive shaft to the blade boss. The blade is screwed onto the drive shaft, and the blade is fixed to the drive shaft.
作用
この構成により、電動機から発生した駆動軸方向の振動
は、スプリングによって吸収され、羽根へは伝わらず、
異常音が発生しないこととなる。Effect: With this configuration, vibrations generated from the electric motor in the direction of the drive shaft are absorbed by the spring and are not transmitted to the blades.
This means that no abnormal noise will be generated.
実施例
以下、本発明の一実施例を第１図および第２図にもとづ
き説明する。ファンケーシング１の反吸込口側の側板に
電動機３を固定し、その駆動軸４を、駆動軸４に係止し
たｕリング５が遠心ファン２の羽根ボス８の一端面に当
接するところまで嵌入し、つぎに駆動軸４の先端に形成
したネジ部に羽根締付固定具子を螺合する。このとき、
羽根締付固定具７と羽根ボヌ８の他端面との間にスプリ
ング６を介在させ、スプリング６を縮短するよう−にし
て、羽根締付固定具７を所定量螺入する。この螺入する
所定量は、スプリング６が後述する電動機３の振動を吸
収する張力を維持し、かつ遠心ファン２を駆動軸４に固
着できる締付中を考慮して設定される。EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2. The electric motor 3 is fixed to the side plate on the side opposite to the suction port of the fan casing 1, and its drive shaft 4 is inserted until the U-ring 5, which is locked to the drive shaft 4, comes into contact with one end surface of the blade boss 8 of the centrifugal fan 2. Next, a blade tightening fixture is screwed into the threaded portion formed at the tip of the drive shaft 4. At this time,
A spring 6 is interposed between the blade tightening fixture 7 and the other end surface of the blade bonne 8, and the blade tightening fixture 7 is screwed in by a predetermined amount while compressing and shortening the spring 6. This predetermined amount of screwing is set in consideration of the tightening process in which the spring 6 maintains tension to absorb vibrations of the electric motor 3, which will be described later, and also allows the centrifugal fan 2 to be fixed to the drive shaft 4.
上記構成により、電動機３の駆動軸４と羽根ボス８とは
、駆動軸４方向に対して、伸縮するスプリングｅを介し
て固着されているので、電動機３から駆動軸４方向の振
動が発生してもスプリング６によって吸収され、振動が
遠心ファン２で増幅されて、異常音として外部に伝播す
ることが防止できることとなる。With the above configuration, the drive shaft 4 of the electric motor 3 and the vane boss 8 are fixed to each other via the spring e that expands and contracts in the direction of the drive shaft 4, so that vibrations from the electric motor 3 in the direction of the drive shaft 4 are prevented. However, the vibrations can be prevented from being absorbed by the spring 6, amplified by the centrifugal fan 2, and propagated to the outside as abnormal noise.
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
、羽根ボスと羽根締付固定具の間に介在させたスプリン
グによって、電動機の駆動軸方向の振動が吸収され、羽
根に振動が伝わらず異常音が発生せず、低騒音の送風機
を実現することができるという効果が得られる。Effects of the Invention As is clear from the above description of the embodiments, according to the present invention, vibrations in the direction of the drive shaft of the electric motor are absorbed by the spring interposed between the blade boss and the blade tightening fixture, and the blade The effect is that vibrations are not transmitted, abnormal noise is not generated, and a low-noise blower can be realized.
第１図は本発明の一実施例の小型送風機を示す断面図、
第２図は羽根固着部の断面図、第３図は従来の小型送風
機の断面図、第４図は同羽根固着部の断面図である。
１・・・・・・ファンケーシング、２・・・・・・遠心
ファン、３・・・・・・電動機、４・・・・・・駆動軸
、ｅ・・・・・・スプリング、７・・・・・・羽根締付
固定具、８・・・・・・羽根ボス。
代理人の氏名 弁理士 粟 野 重 孝 ほか１名／−
−−ファンケーンン２１
４−−−＆ｈ郭
第２図
６−−−スプリンクパFIG. 1 is a sectional view showing a small blower according to an embodiment of the present invention;
FIG. 2 is a sectional view of the blade fixing portion, FIG. 3 is a sectional view of a conventional small blower, and FIG. 4 is a sectional view of the same blade fixing portion. DESCRIPTION OF SYMBOLS 1...Fan casing, 2...Centrifugal fan, 3...Electric motor, 4...Drive shaft, e...Spring, 7... ...Blade tightening fixture, 8...Blade boss. Name of agent: Patent attorney Shigetaka Awano and 1 other person/-
---Fankaen 21 4---&h Guo No. 2 Figure 6--Sprinker
Claims (1)
機の駆動軸を嵌入し、羽根締付固定具を前記羽根ボスと
の間にスプリングを介在させて前記駆動軸に螺合し、前
記羽根を前記駆動軸に固着してなる小型送風機。A drive shaft of an electric motor is fitted into a blade boss of a blade surrounded by a fan casing, and a blade tightening fixture is screwed onto the drive shaft with a spring interposed between the blade boss and the blade to drive the blade. A small blower that is fixed to a shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4052089A JPH02218893A (en) | 1989-02-20 | 1989-02-20 | Miniature fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4052089A JPH02218893A (en) | 1989-02-20 | 1989-02-20 | Miniature fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02218893A true JPH02218893A (en) | 1990-08-31 |
Family
ID=12582786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4052089A Pending JPH02218893A (en) | 1989-02-20 | 1989-02-20 | Miniature fan |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02218893A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213231A (en) * | 2010-04-02 | 2011-10-12 | 珠海格力电器股份有限公司 | Shaft core for fan blade and centrifugal fan blade |
| CN105134629A (en) * | 2015-09-23 | 2015-12-09 | 广东美的制冷设备有限公司 | Fan and air purifier |
-
1989
- 1989-02-20 JP JP4052089A patent/JPH02218893A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213231A (en) * | 2010-04-02 | 2011-10-12 | 珠海格力电器股份有限公司 | Shaft core for fan blade and centrifugal fan blade |
| CN105134629A (en) * | 2015-09-23 | 2015-12-09 | 广东美的制冷设备有限公司 | Fan and air purifier |
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