JPH022955Y2 - - Google Patents
Info
- Publication number
- JPH022955Y2 JPH022955Y2 JP1985027936U JP2793685U JPH022955Y2 JP H022955 Y2 JPH022955 Y2 JP H022955Y2 JP 1985027936 U JP1985027936 U JP 1985027936U JP 2793685 U JP2793685 U JP 2793685U JP H022955 Y2 JPH022955 Y2 JP H022955Y2
- Authority
- JP
- Japan
- Prior art keywords
- rotating shaft
- tip
- impeller
- spring material
- fixing part
- 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
- 239000000463 material Substances 0.000 claims description 28
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【考案の詳細な説明】
〔考案の目的〕
（産業上の利用分野）
本考案は、送風機のフアン装置、とくに、羽根
車の取付装置に関する。[Detailed Description of the Invention] [Purpose of the Invention] (Field of Industrial Application) The present invention relates to a fan device for an air blower, and particularly to an impeller attachment device.
（従来の技術）
従来、一般に用いられているフアン装置の羽根
車の取付けは、たとえば、第４図に示すように、
回転軸１の外周面の凹溝２にＥワツシヤ３を嵌着
するとともに、回転軸１に羽根車４のボス部５を
嵌合してＥワツシヤ３で位置決めし、かつ、ボス
部５の前部に、軸方向に複数個のスリツト６を有
する円筒状の固定部７を突設し、この固定部７の
外周に板ばねなどのばね材８を嵌着し、このばね
材８の弾性力で羽根車４を回転軸１に固定してい
る。(Prior Art) Conventionally, the impeller of a commonly used fan device is attached as shown in FIG. 4, for example.
An E washer 3 is fitted into the concave groove 2 on the outer peripheral surface of the rotating shaft 1, and a boss portion 5 of the impeller 4 is fitted onto the rotating shaft 1 and positioned by the E washer 3. A cylindrical fixing part 7 having a plurality of slits 6 in the axial direction is protruded from the part, and a spring material 8 such as a leaf spring is fitted on the outer periphery of the fixing part 7. The impeller 4 is fixed to the rotating shaft 1.
このような構造によると、ばね材８はそれ自体
の弾性力で固定部７に保持されているため、振動
により軸方向に抜けるおそれがある。また、羽根
車４の回転軸１に対する固定力は大部分がばね材
８によつており、その強さが強ければ強いほど固
定力は大きくなるが、ばね材８自体の固定部７へ
の装着力を大きくなり、組付作業性が低下する。
反対に、ばね材８の力を弱くすれば組付作業性は
良くなるが、締付力が弱まるため、回転時にスリ
ツプしたり、軸方向に移動して送風性能が低下し
たり、振動、異音が生じたりする問題がある。ま
た、いずれにしても、ばね材８の固定部７への取
付けに際しては、ばね材８に所定の締付力を発生
させるためにその内径を固定部７の外径よりやや
小さめに形成し、これを拡げながら固定部７に嵌
着しなければならず、作業性が悪い。なお、上記
のようにＥワツシヤ３を用いる場合、回転軸１に
はＥワツシヤ３の凹溝２を形成する溝加工を施す
とともに、Ｅワツシヤ３を装着する作業工程を要
し、手数がかかるとともに、コストアツプとな
る。 According to such a structure, since the spring member 8 is held by the fixed part 7 by its own elastic force, there is a risk that the spring member 8 may come off in the axial direction due to vibration. Further, the fixing force of the impeller 4 to the rotating shaft 1 is mostly due to the spring material 8, and the stronger the strength, the greater the fixing force, but the attachment of the spring material 8 itself to the fixing part 7 This increases the force and reduces assembly work efficiency.
On the other hand, if the force of the spring material 8 is weakened, assembly workability will be improved, but since the tightening force will be weakened, it may slip during rotation, move in the axial direction, reduce air blowing performance, cause vibration, or abnormality. There is a problem with noise. In any case, when attaching the spring material 8 to the fixed part 7, in order to generate a predetermined tightening force in the spring material 8, the inner diameter thereof is formed to be slightly smaller than the outer diameter of the fixed part 7, It is necessary to fit it into the fixing part 7 while expanding it, which results in poor workability. In addition, when using the E washer 3 as described above, it is necessary to perform groove processing on the rotary shaft 1 to form the concave groove 2 of the E washer 3, and also to mount the E washer 3, which is time-consuming and , the cost will increase.
また、従来、実開昭56−147397号公報、実開昭
58−148300号公報に示されるように、前記のよう
な羽根車における円筒状の固定部の先端内側に、
回転軸の先端部に突き当て係合する係合突部を形
成し、この係合突部で回転軸に対する位置決めを
行ない、第４図に示したようなＥワツシヤなどを
用いないものも知られている。そして、前者にお
いては、固定部の先端外周に突設を設けて、ばね
材の軸方向への抜け防止を行なつている。 In addition, conventionally, Utility Model Application Publication No. 56-147397, Utility Model Application Publication
As shown in Japanese Patent No. 58-148300, inside the tip of the cylindrical fixed part of the impeller as described above,
There are also known devices in which an engaging protrusion is formed that abuts against and engages the tip of the rotating shaft, and the engaging protrusion is used to position the rotating shaft, without using an E washer as shown in Fig. 4. ing. In the former case, a protrusion is provided on the outer periphery of the distal end of the fixing portion to prevent the spring material from coming off in the axial direction.
このようにすることによつて、ばね材の軸方向
への抜けは防止されるが、この場合、ばね材の固
定部への装着に際しては、ばね材をさらに拡げな
がら嵌着しなければならず、ばね材の組付作業性
に難点がある。 By doing this, the spring material is prevented from coming off in the axial direction, but in this case, when attaching the spring material to the fixed part, it is necessary to spread the spring material further while fitting it. However, there are difficulties in assembling the spring material.
（考案が解決しようとする問題点）
上記のように、従来の装置においては、ばね材
の軸方向への抜け防止、その組付作業性に難点が
ある。(Problems to be Solved by the Invention) As described above, in the conventional device, there are difficulties in preventing the spring material from coming off in the axial direction and in assembling it.
本考案は、上述のような問題を解決しようとす
るもので、羽根車を回転軸に対して確実に固定す
るとともに、ばね材の軸方向への抜け防止および
組付作業性の向上を図ることを目的とするもので
ある。 This invention aims to solve the above-mentioned problems, and aims to securely fix the impeller to the rotating shaft, prevent the spring material from coming off in the axial direction, and improve assembly workability. The purpose is to
（問題点を解決するための手段）
本考案は、回転軸と、この回転軸に取付ける羽
根車とからなり、上記羽根車は、上記回転軸に嵌
合するボス部の外周に複数枚の羽根を設けるとと
もに、ボス部の前部に上記回転軸を挿通する円筒
状の固定部を一体に突設し、この固定部に複数個
の軸方向のスリツトを設けて複数個の押圧部を分
割形成し、この各押圧部の先端内側に上記回転軸
の先端部に突き当て係合する係合突部を形成し、
上記固定部の外周にばね材を設けたフアン装置に
おいて、上記固定部の内径および外径は先端側を
小径として後方を拡径したテーパー状に形成する
とともに、その内径側のテーパー角度は外径側の
テーパー角度より大きく形成して、固定部を根元
部の厚さより先端側の厚さを厚くしたものであ
る。
(Means for Solving the Problems) The present invention consists of a rotating shaft and an impeller attached to the rotating shaft, and the impeller has a plurality of blades on the outer periphery of a boss that fits into the rotating shaft. At the same time, a cylindrical fixing part through which the rotating shaft is inserted is integrally protruded from the front part of the boss part, and a plurality of axial slits are provided in this fixing part to form a plurality of divided pressing parts. and forming an engaging protrusion on the inner side of the tip of each of the pressing portions, which abuts and engages with the tip of the rotating shaft;
In the fan device in which a spring material is provided on the outer periphery of the fixed part, the inner and outer diameters of the fixed part are formed in a tapered shape with a smaller diameter at the tip side and a larger diameter at the rear, and the taper angle on the inner diameter side is the outer diameter. The taper angle is larger than the taper angle on the side, and the thickness of the fixing part on the tip side is thicker than the thickness of the root part.
（作用）
本考案では、回転軸に羽根車のボス部を挿入嵌
合し、回転軸の先端面に固定部の各押圧部におけ
る係合突部を突き当てる。(Function) In the present invention, the boss portion of the impeller is inserted and fitted onto the rotating shaft, and the engaging protrusion of each pressing portion of the fixing portion abuts against the distal end surface of the rotating shaft.
これとともに回転軸によつて固定部の内径のテ
ーパー面を外方に押動することにより、各押圧部
が広げられ、かつ、固定部の根元部の厚さｔより
先端側の厚さＴが厚いので、固定部の先端側が大
径となり、その根元部でばね材を保持し、回転軸
に対して羽根車のボス部をばね材の弾性力、およ
び、固定部の弾性力によつて固定する。 At the same time, by pushing the tapered surface of the inner diameter of the fixed part outward by the rotating shaft, each pressing part is expanded, and the thickness T on the tip side is smaller than the thickness t at the base of the fixed part. Since it is thick, the tip of the fixed part has a large diameter, and the spring material is held at its base, and the boss part of the impeller is fixed to the rotating shaft by the elastic force of the spring material and the elastic force of the fixed part. do.
（実施例）
以下、本考案の一実施例を第１図ないし第３図
を参照して説明する。(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.
１１はモータの回転軸で、この回転軸１１の先
端の外周面にテーパー状または曲面状のガイド面
１２が形成されている。 Reference numeral 11 denotes a rotating shaft of the motor, and a tapered or curved guide surface 12 is formed on the outer peripheral surface of the tip of this rotating shaft 11.
１４は羽根車で、この羽根車１４は、円形状の
ボス部１５の外周に複数枚の羽根１６が設けられ
ているとともに、ボス部１５の中心部に軸押入孔
１７が形成され、この軸挿入孔１７の内端部にテ
ーパー状または曲面状のガイド面１８が形成され
ている。また、上記ボス部１５の前側中央部に上
記回転軸１１を挿通する円筒状の固定部１９が一
体に突設され、この固定部１９に上記軸挿入孔１
７を中心にして複数個の軸方向のスリツト２０が
対称的に設けられて複数個の押圧部２１が分割形
成され、この各押圧部２１の先端内側に上記回転
軸１１の先端部に突き当て係合する。ストツパ用
の係合突部２２がほぼＬ字形に形成されている。
また、上記固定部１９の内径および外径は先端側
を小径として後方を拡径したテーパー状に形成さ
れているとともに、この内径側のテーパー角度α
は外径側のテーパー角度βより大きく形成され
て、固定部１９は根元部の厚さｔより先端側の厚
さＴが厚くなつている。 14 is an impeller, and this impeller 14 has a plurality of blades 16 provided on the outer periphery of a circular boss portion 15, and a shaft insertion hole 17 is formed in the center of the boss portion 15. A tapered or curved guide surface 18 is formed at the inner end of the insertion hole 17 . Further, a cylindrical fixing part 19 is integrally protruded from the front central part of the boss part 15 and the rotating shaft 11 is inserted therethrough.
A plurality of axial slits 20 are provided symmetrically around center point 7, and a plurality of pressing portions 21 are divided and formed, and the inner tip of each pressing portion 21 is abutted against the tip of the rotating shaft 11. engage. An engagement protrusion 22 for a stopper is formed into a substantially L-shape.
Further, the inner and outer diameters of the fixing portion 19 are tapered such that the tip side has a small diameter and the rear side has a larger diameter, and the inner diameter side has a taper angle α.
is formed to be larger than the taper angle β on the outer diameter side, and the fixed portion 19 has a thickness T on the tip side that is thicker than a thickness T on the root portion.
そして、上記固定部１９の外周にほぼ円形状の
板ばねまたはコイルばねからなるばね材２３が嵌
着されている。 A spring member 23 made of a substantially circular plate spring or coil spring is fitted around the outer periphery of the fixing portion 19.
そうして、上記回転軸１１に羽根車１４のボス
部１５の軸挿入孔１７を互いのガイド面１２，１
８を介して挿入嵌合し、回転軸１１の先端面に固
定部１９の各押圧部２１における係合突部２２を
突き当てる。 Then, the shaft insertion hole 17 of the boss portion 15 of the impeller 14 is inserted into the rotating shaft 11 and the guide surfaces 12 and 1 of each other.
8 , and the engaging protrusions 22 of each pressing portion 21 of the fixing portion 19 abut against the distal end surface of the rotating shaft 11 .
これとともに、第３図に示すように、回転軸１
１によつて固定部１９の内径のテーパー面を外方
に押動することにより、各押圧部２１が広げら
れ、かつ、固定部１９の根元部の厚さｔより先端
側の厚さＴが厚いので、固定部１９の先端側が大
径となり、その根元部でばね材２３を保持し、回
転軸１１に対して羽根車１４のボス部１５をばね
材２３の弾性力、および、固定部１９の弾性力に
よつて固定する。 Along with this, as shown in FIG.
1 to push the tapered surface of the inner diameter of the fixed part 19 outward, each pressing part 21 is expanded, and the thickness T of the fixed part 19 on the tip side is smaller than the thickness t of the root part of the fixed part 19. Since it is thick, the tip side of the fixed part 19 has a large diameter, and the spring material 23 is held at the base thereof, and the boss part 15 of the impeller 14 is moved against the rotating shaft 11 by the elastic force of the spring material 23 and the fixed part 19. It is fixed by the elastic force of.
このようにすることにより、回転軸１１に羽根
車１４を組付後、固定部１９の肉厚は内外径のテ
ーパーが異なつていて根元部が薄肉で、先端が厚
肉であるため、先端側大径となり、ばね材２３が
軸方向に外れるおそれはない。 By doing this, after the impeller 14 is assembled to the rotating shaft 11, the wall thickness of the fixed part 19 is different from the taper of the inner and outer diameters, and is thinner at the root and thicker at the tip. Since the side diameter is large, there is no risk that the spring material 23 will come off in the axial direction.
また、ばね材２３の固定部１９への組付時にお
いて、ばね材２３は固定部１９の外径側のテーパ
ー面に順方向で挿入できるため、組付けが容易に
でき、かつ、羽根車１４の回転軸１１への取付け
も、固定部１９の内径側のテーパー面に順方向に
挿入するので、取付けが容易にできる。 Further, when assembling the spring material 23 to the fixed part 19, the spring material 23 can be inserted into the tapered surface on the outer diameter side of the fixed part 19 in the forward direction, so that the assembly can be easily performed, and the impeller 14 can be easily assembled. The attachment to the rotating shaft 11 is also easy because it is inserted into the tapered surface on the inner diameter side of the fixing part 19 in the forward direction.
また、羽根車１４のボス部１５は、たとえば合
成樹脂成形の場合にもその金型製作は何ら困難性
もなく、安価にできる。 Further, even when the boss portion 15 of the impeller 14 is molded, for example, from synthetic resin, there is no difficulty in manufacturing the mold and the mold can be made at low cost.
また、回転軸１１の先端および軸挿入孔１７の
内端にテーパー状または曲面状のガイド面１２，
１８を形成することにより、回転軸１１の挿入作
業がより容易にでき、作業性を向上することがで
きる。 Further, a tapered or curved guide surface 12 is provided at the tip of the rotating shaft 11 and the inner end of the shaft insertion hole 17.
By forming 18, the operation of inserting the rotating shaft 11 can be made easier, and the workability can be improved.
〔考案の効果）
本考案によれば、回転軸に羽根車を組付後、固
定部の肉厚は内外径のテーパーが異なつていて根
元部が薄肉で、先端が厚肉であるため、先端側が
大径となり、ばね材が軸方向に外れるおそれがな
く、安定して固定することができる。[Effects of the invention] According to the invention, after the impeller is assembled to the rotating shaft, the wall thickness of the fixed part has different tapers on the inner and outer diameters, and is thinner at the root and thicker at the tip. The tip side has a large diameter, so there is no risk of the spring material coming off in the axial direction, and it can be stably fixed.
また、ばね材の固定部への組付時において、ば
ね材は固定部の外径側のテーパー面に順方向で挿
入できるため、組付が容易にでき、かつ、羽根車
の回転軸への取付けも、固定部の内径側のテーパ
ー面に順方向に挿入するので、取付けが容易にで
き、組立作業性を向上することができる。そし
て、ばね材の弾性力とともに、固定部の弾性力に
よつて羽根車を回転軸に固定することにより、羽
根車を回転軸に対して確実に固定することができ
る。 In addition, when assembling the spring material to the fixed part, the spring material can be inserted into the tapered surface on the outer diameter side of the fixed part in the forward direction, making assembly easy and ensuring that the spring material is not attached to the rotation shaft of the impeller. Also, since the fixing part is inserted in the forward direction into the tapered surface on the inner diameter side of the fixing part, the fixing part can be easily attached and the assembly work efficiency can be improved. By fixing the impeller to the rotating shaft using the elastic force of the spring material and the elastic force of the fixing portion, the impeller can be reliably fixed to the rotating shaft.
第１図は本考案の装置の一実施例を示す分解斜
視図、第２図は第１図の分解断面図、第３図は第
２図の組立状態の断面図、第４図は従来の装置の
断面図である。
１１……回転軸、１４……羽根車、１５……ボ
ス部、１６……羽根、１９……固定部、２０……
スリツト、２１……押圧部、２２……係合突部、
２３……ばね材。
Fig. 1 is an exploded perspective view showing one embodiment of the device of the present invention, Fig. 2 is an exploded sectional view of Fig. 1, Fig. 3 is a sectional view of the assembled state of Fig. 2, and Fig. 4 is a conventional FIG. 2 is a cross-sectional view of the device. 11... Rotating shaft, 14... Impeller, 15... Boss part, 16... Vane, 19... Fixed part, 20...
slit, 21...pressing part, 22...engaging protrusion,
23...Spring material.
Claims (1)
なり、 上記羽根車は、上記回転軸に嵌合するボス部の
外周に複数枚の羽根を設けるとともに、ボス部の
前部に上記回転軸を挿通する円筒状の固定部を一
体に突設し、この固定部に複数個の軸方向のスリ
ツトを設けて複数個の押圧部を分割形成し、この
各押圧部の先端内側に上記回転軸の先端部に突き
当て係合する係合突部を形成し、 上記固定部の外周にばね材を設けたフアン装置
において、 上記固定部の内径および外径は先端側を小径と
して後方を拡径したテーパー状に形成するととも
に、その内径側のテーパー角度は外径側のテーパ
ー角度より大きく形成して、固定部を根元部の厚
さより先端側の厚さを厚くした ことを特徴とするフアン装置。[Claims for Utility Model Registration] Consisting of a rotating shaft and an impeller attached to the rotating shaft, the impeller is provided with a plurality of blades on the outer periphery of a boss that fits into the rotating shaft, and A cylindrical fixing part through which the rotating shaft is inserted is integrally protruded from the front part of the fixing part, and a plurality of axial slits are provided in this fixing part to form a plurality of divided pressing parts, and each of the pressing parts In the fan device, an engaging protrusion that abuts and engages with the tip of the rotating shaft is formed on the inside of the tip, and a spring material is provided on the outer periphery of the fixing part, wherein the inner diameter and the outer diameter of the fixing part are on the tip side. It is formed into a tapered shape with a small diameter and an expanded diameter at the rear, and the taper angle on the inner diameter side is larger than the taper angle on the outer diameter side, so that the fixed part is thicker at the tip than at the root. A fan device characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985027936U JPH022955Y2 (en) | 1985-02-27 | 1985-02-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985027936U JPH022955Y2 (en) | 1985-02-27 | 1985-02-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61144298U JPS61144298U (en) | 1986-09-05 |
| JPH022955Y2 true JPH022955Y2 (en) | 1990-01-24 |
Family
ID=30525350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985027936U Expired JPH022955Y2 (en) | 1985-02-27 | 1985-02-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH022955Y2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56147397U (en) * | 1980-04-04 | 1981-11-06 | ||
| JPS58148300U (en) * | 1982-03-30 | 1983-10-05 | 松下精工株式会社 | Fan blade attachment device |
-
1985
- 1985-02-27 JP JP1985027936U patent/JPH022955Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61144298U (en) | 1986-09-05 |
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| Publication | Publication Date | Title |
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