JP2790491B2 - Resin fan - Google Patents
Resin fanInfo
- Publication number
- JP2790491B2 JP2790491B2 JP25272689A JP25272689A JP2790491B2 JP 2790491 B2 JP2790491 B2 JP 2790491B2 JP 25272689 A JP25272689 A JP 25272689A JP 25272689 A JP25272689 A JP 25272689A JP 2790491 B2 JP2790491 B2 JP 2790491B2
- Authority
- JP
- Japan
- Prior art keywords
- main plate
- blade
- boss
- rotation axis
- ring
- 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 - Lifetime
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は樹脂製ファンにおける羽根とリングの固定に
関するものである。Description: TECHNICAL FIELD The present invention relates to fixing blades and rings in a resin fan.
従来の技術 従来の樹脂製ファンにおける羽根とインリの固定法に
ついて、特開昭58−70094号公報を参考に第３図および
第４図により説明する。１は円形主板、２は環状側板
（リング）３は前記円形主板１に一体成形され複数もう
けた羽根、3aはこの羽根端部、矢印４は流体の流れを示
す。これらの構成において、一般的に流体性能向上のた
め、羽根の入口面積は出口面積より大きくするのが通例
であり、そのため、羽根３と側板２は傾斜している。そ
して、傾斜している羽根端部3aと環状側板２を超音波溶
着するのは極めて困難である。何故ならば、この傾斜部
へ超音波エネルギーを圧着させる必要があるけれども、
平面でないため逃げてしまうからである。したがって、
接着強度が不充分であったり、形状変形があったりし
て、信頼性の高いファンの製造が困難である。2. Description of the Related Art Referring to FIGS. 3 and 4, a method of fixing a blade and an inlay in a conventional resin fan will be described with reference to Japanese Patent Application Laid-Open No. 58-70094. 1 is a circular main plate, 2 is an annular side plate (ring) 3 is a blade integrally formed with the circular main plate 1 and has a plurality of blades, 3a is an end of the blade, and arrow 4 indicates a flow of fluid. In these configurations, generally, the inlet area of the blade is generally larger than the outlet area in order to improve the fluid performance. Therefore, the blade 3 and the side plate 2 are inclined. It is extremely difficult to ultrasonically weld the inclined blade end 3a and the annular side plate 2. Because it is necessary to crimp ultrasonic energy to this slope,
This is because they escape because they are not flat. Therefore,
It is difficult to manufacture a highly reliable fan due to insufficient bonding strength or deformation in shape.
発明が解決しようとする課題 前述の如く、超音波溶着法は、２部品間の面辺り部を
高熱化溶解させ溶着させるため、その作用時圧力をかけ
る必要があり、傾斜した羽根端部に環状側板（リング）
を超音波溶着法で固定する場合、すべりを生じる欠点が
ある。そこで本発明は、直接前述の傾斜面に圧力のかか
らない固定法、すなわち、固定強度が確実で、寸法変形
の生じない信頼性の高いファンを提供するものである。Problems to be Solved by the Invention As described above, in the ultrasonic welding method, it is necessary to apply pressure at the time of the operation in order to heat and melt the area around the surface between the two parts, and to apply the pressure. Side plate (ring)
Is fixed by the ultrasonic welding method, there is a disadvantage that slip occurs. In view of the above, the present invention provides a fixing method in which pressure is not directly applied to the above-mentioned inclined surface, that is, a highly reliable fan having a fixed fixing strength and no dimensional deformation.
課題を解決するための手段 前記課題を解決するために、本発明は、主板と、この
主板に一体成形で複数もうけられ反主板側の端面が回転
軸に対して傾斜した羽根と、前記羽根の反主板側の端面
に取付けられたリングとからなる樹脂製ファンにおい
て、羽根の反主板側の端面に回転軸に平行に突出したボ
スをもうけると共に、前記リングの反主板側の面に回転
軸に垂直な平面に前記ボスが貫通する貫通穴を有する平
面部をもうけ、前記貫通穴を貫通して前記平面部から突
出した部分の前記ボスを熱溶着でつぶすことにより、羽
根とリングを固定したのである。Means for Solving the Problems In order to solve the problems, the present invention provides a main plate, a plurality of blades integrally formed on the main plate and having an end surface on the side opposite to the main plate inclined with respect to a rotation axis, In a resin fan comprising a ring attached to the end face on the side opposite to the main plate, a boss protruding parallel to the rotation axis is provided on the end face on the side opposite to the main plate of the blade, and the rotation shaft is provided on the surface on the side opposite to the main plate of the ring. The blade and the ring were fixed by making a plane portion having a through hole through which the boss penetrates in a vertical plane, and crushing the boss in a portion protruding from the plane portion through the through hole by heat welding. is there.
作用 本発明は、上記した構成，工法によって樹脂製ファン
を製造するのであるがボス部のみに圧力がかかる工法の
ため、羽根端部の傾斜面とリングの傾斜面へ圧力をかけ
ないため逃げを生じない。すなわち、傾斜部に超音波溶
着する困難さが解消出来るとともに形状変形のない信頼
性の高い樹脂製ファンとなる。Action The present invention manufactures a resin fan by the above-described configuration and method. However, since the pressure is applied only to the boss portion, the pressure is not applied to the inclined surface of the blade end and the inclined surface of the ring. Does not occur. That is, it is possible to eliminate the difficulty of ultrasonic welding to the inclined portion and to obtain a highly reliable resin fan without shape deformation.
実 施 例 以下本発明の一実施例の樹脂製ファンについて、添付
の第１図及び第２図を参照しながら説明する。Embodiment Hereinafter, a resin fan according to an embodiment of the present invention will be described with reference to the attached FIGS.
図において、１は主板、２はリング、３は主板１に一
体成形で複数もうけられ羽根端部（反主板側の端面）3a
が回転軸に対して傾斜した羽根であり、羽根３の羽根端
部（反主板側の端面）3aにはリング２が取付けられてい
る。矢印４は流体の流れを示す。５は回転軸に垂直な平
面部5aを有する凸部であり、リング２の反主板側の面に
全周にわたってもうけられる、６は羽根３の羽根端部
（反主板側の端面）3aにもうけられた回転軸に平行に突
出したボスであり、平面部5aにもうけられた貫通穴を貫
通して平面部5aから突出した部分は熱溶着でつぶされて
いる。In the figure, 1 is a main plate, 2 is a ring, and 3 is a plurality of blades formed integrally with the main plate 1 (end surface on the side opposite the main plate) 3a
Is a blade inclined with respect to the rotation axis, and a ring 2 is attached to the blade end (the end surface on the side opposite to the main plate) 3a of the blade 3. Arrow 4 indicates the flow of the fluid. Reference numeral 5 denotes a convex portion having a plane portion 5a perpendicular to the rotation axis, and is provided on the entire surface of the ring 2 on the side opposite to the main plate, and 6 is provided on the end of the blade 3 (end surface on the side opposite to the main plate) 3a. The boss protrudes in parallel with the rotation axis provided, and a portion protruding from the flat portion 5a through a through hole formed in the flat portion 5a is crushed by heat welding.
次に、羽根３とリング２の固定方法を説明する。 Next, a method of fixing the blade 3 and the ring 2 will be described.
まず、羽根３の羽根端部（反主板側の端面）3aにおい
て回転軸に平行に突出したボス６を、リング２の凸部５
の貫通穴を貫通させて平面部5aから突出させる。この状
態で、ボス６の平面部5aから突出した部分を加熱して軟
化させるとともに、平面部5aから突出したボス６の先端
である上部平面部6aを主板１側に加圧して外径が貫通穴
より大きくなるまでつぶし、羽根３と、リング２を固定
する。この工法は羽根端部の傾斜面に加圧の力がくわわ
らないので、リングのズレや形状変形もなく信頼性の高
い樹脂製ファンが出来る。First, a boss 6 protruding in parallel with the rotation axis at the blade end (the end surface on the side opposite to the main plate) 3a of the blade 3 is fitted to the convex portion 5 of the ring 2.
Through the through hole and project from the plane portion 5a. In this state, the portion of the boss 6 protruding from the flat portion 5a is heated and softened, and the upper flat portion 6a, which is the tip of the boss 6 protruding from the flat portion 5a, is pressed against the main plate 1 to penetrate the outer diameter. Crush until it is larger than the hole, and fix the blade 3 and the ring 2. In this method, since a pressing force is not applied to the inclined surface of the blade end portion, a highly reliable resin fan without ring displacement or shape deformation can be obtained.
発明の効果 以上のように本発明は、主板と、この主板に一体成形
で複数もうけられ反主板側の端面が回転軸に対して傾斜
した羽根と、前記羽根の反主板側の端面に取付けられた
リングとからなる樹脂製ファンにおいて、羽根の反主板
側の端面に回転軸に平行に突出したボスがもうけると共
に、前記リングの反主板側の面には回転軸に垂直な平面
に前記ボスが貫通する貫通穴を有する平面部がもうけ、
前記貫通穴を貫通して前記平面部から突出した部分の前
記ボスは熱溶着でつぶすことにより、羽根とリングを固
定したので、従来のような傾斜面部に加圧圧着する例え
ば超音波による固定法に較べ、ズレが生じないため、確
実な固定ができ、形状変形のない信頼性の高い樹脂製フ
ァンが製造出来る効果がある。Effect of the Invention As described above, the present invention provides a main plate, a plurality of blades integrally formed on the main plate, the end surface of the anti-main plate side inclined with respect to the rotation axis, and the blade attached to the end surface of the blade on the anti-main plate side. In a resin fan consisting of a ring and a boss, a boss protruding in parallel with the rotation axis is formed on the end face of the blade opposite to the main plate, and the boss is formed on a plane perpendicular to the rotation axis on a surface of the ring opposite to the main plate. There is a flat part with a through hole that penetrates,
Since the boss at the portion protruding from the flat portion penetrating through the through hole is fixed by heat welding, the blade and the ring are fixed. As compared with the above, there is no displacement, so that it is possible to securely fix and produce a highly reliable resin fan without shape deformation.
第１図は本発明の一実施例の樹脂製ファンの概略構造図
で、第１図ａは正面図、第１図ｂは縦断面図、第２図は
第１図における羽根とリングの固定明細図、第３図は従
来の樹脂製ファンの概略構造で、第３図ａは正面図、第
３図ｂは側面図、第４図は第３図ｂの要部拡大断面図で
ある。 １……主板、２……リング、３……羽根、3a……羽根端
部、４……流体の流れ、５……凸部、5a……凸部の平面
部、６……ボス、6a……ボスの上部平面部。FIG. 1 is a schematic structural view of a resin fan according to one embodiment of the present invention. FIG. 1a is a front view, FIG. 1b is a longitudinal sectional view, and FIG. Fig. 3 is a schematic view of a conventional resin fan, Fig. 3a is a front view, Fig. 3b is a side view, and Fig. 4 is an enlarged sectional view of a main part of Fig. 3b. 1 ... Main plate, 2 ... Ring, 3 ... Blade, 3a ... Blade end, 4 ... Fluid flow, 5 ... Protrusion, 5a ... Protrusion plane, 6 ... Boss, 6a .... Upper flat part of the boss.
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) F04D 29/18 - 29/38Continuation of front page (58) Field surveyed (Int.Cl. 6 , DB name) F04D 29/18-29/38
Claims (1)
られ反主板側の端面が回転軸に対して傾斜した羽根と、
前記羽根の反主板側の端面に取付けられたリングとから
なる樹脂製ファンにおいて、 前記羽根の反主板側の端面には回転軸に平行に突出した
ボスがもうけられ、前記リングの反主板側の面には回転
軸に垂直な平面に前記ボスが貫通する貫通穴を有する平
面部がもうけられ、前記貫通穴を貫通して前記平面部か
ら突出した部分の前記ボスは熱溶着でつぶされているこ
とを特徴とする樹脂製ファン。A main plate, and a plurality of blades formed integrally with the main plate and having an end surface on the side opposite to the main plate inclined with respect to a rotation axis;
In a resin fan comprising a ring attached to an end face of the blade opposite to the main plate, a boss protruding parallel to a rotation axis is provided at an end face of the blade opposite to the main plate, The surface is provided with a flat portion having a through hole through which the boss penetrates in a plane perpendicular to the rotation axis, and the boss at a portion penetrating the through hole and protruding from the flat portion is crushed by heat welding. A resin fan characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25272689A JP2790491B2 (en) | 1989-09-27 | 1989-09-27 | Resin fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25272689A JP2790491B2 (en) | 1989-09-27 | 1989-09-27 | Resin fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03115800A JPH03115800A (en) | 1991-05-16 |
| JP2790491B2 true JP2790491B2 (en) | 1998-08-27 |
Family
ID=17241411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25272689A Expired - Lifetime JP2790491B2 (en) | 1989-09-27 | 1989-09-27 | Resin fan |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2790491B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5457621B2 (en) * | 2006-10-12 | 2014-04-02 | 株式会社日立産機システム | Multi-blade impeller |
| JP6301106B2 (en) * | 2013-10-29 | 2018-03-28 | セイコー化工機株式会社 | Impeller and blower equipped with it |
| WO2021245797A1 (en) * | 2020-06-02 | 2021-12-09 | 三菱電機株式会社 | Turbofan |
-
1989
- 1989-09-27 JP JP25272689A patent/JP2790491B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03115800A (en) | 1991-05-16 |
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