JPH0596494U - Metal axial fan - Google Patents
Metal axial fanInfo
- Publication number
- JPH0596494U JPH0596494U JP4322692U JP4322692U JPH0596494U JP H0596494 U JPH0596494 U JP H0596494U JP 4322692 U JP4322692 U JP 4322692U JP 4322692 U JP4322692 U JP 4322692U JP H0596494 U JPH0596494 U JP H0596494U
- Authority
- JP
- Japan
- Prior art keywords
- wall
- fan
- axial fan
- bead wall
- fixed
- 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
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
(57)【要約】
【目的】 スパイダーの突出壁とのなすファンブレード
側の固着部に加わる応力を低下して、該固着部での亀
裂、弛みの憂いをなくして長期に亘り確実に固着状態を
維持するようにする。
【構成】 周側部に複数の突出壁を有してなるスパイダ
ーの該突出壁部に、それぞれファンブレードを外方への
放射状にリベットによって固着してなる軸流ファンにお
いて、前記それぞれの固着部を略U字状に包囲してファ
ンブレード側の表面に、凹状もしくは凸状のビード壁を
備えて構成する。
(57) [Abstract] [Purpose] The stress applied to the fixed portion on the fan blade side formed by the protruding wall of the spider is reduced, and there is no fear of cracks or slack in the fixed portion, and the fixed state is secured for a long time. Try to maintain. An axial flow fan in which fan blades are radially fixed outward by rivets to the protruding wall portions of a spider having a plurality of protruding walls on the circumferential side, and the respective fixing portions are provided. Is surrounded by a substantially U shape, and a concave or convex bead wall is provided on the surface on the fan blade side.
Description
【0001】[0001]
本考案は一般に自動車の機関冷却用として比較的高速回転並びに絶えず繰返さ れる低速、高速回転の状態で駆動される特に金属製軸流ファンの構造の改良に関 するものである。 The present invention generally relates to the improvement of the structure of a metal axial fan, which is used for cooling an engine of an automobile, and which is driven at a relatively high speed and constantly repeated low and high speeds.
【0002】[0002]
従来、この種の軸流ファンとしては例えば図4に示すように、スパイダー(11) の突出壁(11') 部に、該スパイダー(11)と熱膨張係数の異なる、例えば鋼板或い はアルミ合金板等からなるそれぞれの金属製ファンブレード(12)を、単に平坦な 表面状態をもってリベット(13)により固着して構成されているに過ぎなかった。 Conventionally, as an axial fan of this type, for example, as shown in FIG. 4, a protruding wall (11 ') of a spider (11) has a different thermal expansion coefficient from that of the spider (11), such as a steel plate or aluminum. Each of the metal fan blades (12) made of an alloy plate or the like is simply fixed to the rivet (13) with a flat surface state.
【0003】[0003]
しかしながら、このような従来の技術においては、前記機関部からの熱による 熱膨張の差、高速回転時の遠心力、風圧並びに絶えず繰返される低速、高速の回 転駆動状態或いは加振等により疲労応力が発生すると共に、特にファンブレード の先端側が振動し易く(固有振動数が低く)、この振動が伝達されてリベットに よる固着部附近のファンブレード(12)側に亀裂或いは弛みを生ぜしめる傾向とな し、保安上その対策が望まれる現状にある。 However, in such a conventional technique, fatigue stress is caused by a difference in thermal expansion due to heat from the engine portion, centrifugal force at high speed rotation, wind pressure and continuously repeated low speed, high speed rotation driving state or vibration. And the tip side of the fan blade tends to vibrate (the natural frequency is low), and this vibration is transmitted and tends to cause cracks or looseness on the fan blade (12) side near the fixed part due to rivets. However, the current situation is that security measures are desired.
【0004】 本考案は従来技術の有する前記問題に鑑みてなされたものであり、前記機関側 の駆動状態にあって固着部を略U字状に包囲するビード壁の機能によりファンブ レード側でのそれぞれの固着部に加わる応力を軽減せしめると共に、固有振動数 を上昇させて、長期に亘って該固着部での亀裂、弛みの生ずる憂いをなくすこと ができる金属製軸流ファンを提供することを目的とするものである。The present invention has been made in view of the above problems of the prior art. In the drive state of the engine side, the function of the bead wall that surrounds the fixing portion in a substantially U-shape makes the fan blade side of the fan blade side. It is possible to provide a metal axial fan that can reduce the stress applied to each fixed part and increase the natural frequency to eliminate the fear of cracks and slack at the fixed part for a long period of time. It is intended.
【0005】[0005]
本考案は上記目的を達成するため、周側部に複数の突出壁を有してなるスパイ ダーの該突出壁部に、それぞれファンブレードを外方への放射状にリベットによ って固着してなる軸流ファンにおいて、前記それぞれの固着部を略U字状に包囲 してファンブレード側の表面に、凹状もしくは凸状のビード壁を備えて構成した 金属製軸流ファンを要旨とするものであり、更に前記固着部を包囲するようビー ド壁から内側に延長するビード壁を更に設け、また前記ビード壁から外側に延長 するビード壁を更に設けたものである。 According to the present invention, in order to achieve the above object, fan blades are radially fixed by rivets to the protruding wall portions of a spider having a plurality of protruding walls on the circumferential side. In the axial flow fan, the metal axial flow fan is configured by enclosing each of the fixed portions in a substantially U shape and providing a concave or convex bead wall on the surface on the fan blade side. In addition, a bead wall extending inward from the bead wall is further provided so as to surround the fixed portion, and a bead wall extending outward from the bead wall is further provided.
【0006】[0006]
本考案はこのように構成されているため、前記ビード壁での補強機能によって 剛性を上げ、機関の高速回転時の遠心力、風圧並びに絶えず繰返される低速、高 速の回転駆動状態或いは熱及び加振等によるファンブレード側の固着部に加わる 応力を効果的に軽減せしめると共に、固有振動数を上昇させて振幅を小さくする こととなり、該固着部での亀裂、弛みを生ずる憂いをなくして長期に亘り確実に 固着状態を維持することができるのである。 Since the present invention is constructed in this way, the reinforcing function of the bead wall enhances the rigidity, and centrifugal force, wind pressure, and continuously low-speed and high-speed rotational drive conditions or heat and heat which are repeatedly applied to the engine are increased. The stress applied to the fixed part on the fan blade side due to vibration etc. is effectively reduced, and the natural frequency is increased to reduce the amplitude, eliminating the fear of cracking or loosening at the fixed part for a long time. It is possible to reliably maintain the fixed state throughout.
【0007】[0007]
以下、本考案の実施例を図面に基づいて説明すれば、図1は本考案の金属製軸 流ファンの一部の切欠き正面図、図2は他の実施例の同上図1相当図、図3は図 1A−A線の拡大による断面図であって、(1) はスパイダーであり、その周側部 に複数の突出壁(1')を有してなるものである。(2) はそれぞれファンブレードで あり、前記スパイダー(1) の突出壁(1')にリベット(3) によって固着して外方へ 放射状に取付けられる。一方ファンブレード(2) の表面には、リベット(3) によ る固着部及びスパイダー(1) の突出壁(1')を、根元側には開放する略U字状を呈 して包囲する凹状もしくは凸状からなるビード壁(4) を設ける。この略U字状ビ ード壁(4) の内側に延長し、振動し易いファンブレード(2) の少なくとも先端側 の固着部を包囲するビード壁(4a)を設けると、特に振動絶縁に効果がある。また 略U字状ビード壁(4) の外側に、特にファンブレード(2) の先端隅部に向けて延 長するビード壁(4b)を設けると剛性(固有振動数)を上げる効果が一層発揮され る。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a partially cutaway front view of a metal axial fan of the present invention, and FIG. 2 is a view corresponding to FIG. FIG. 3 is an enlarged cross-sectional view taken along the line AA of FIG. 1A, in which (1) is a spider having a plurality of protruding walls (1 ′) on its peripheral side portion. Each of (2) is a fan blade, which is fixed to the protruding wall (1 ') of the spider (1) by a rivet (3) and radially attached to the outside. On the other hand, on the surface of the fan blade (2), the fixed part by the rivet (3) and the protruding wall (1 ') of the spider (1) are surrounded by a substantially U-shape that is open to the root side. A bead wall (4) of concave or convex shape is provided. Providing a bead wall (4a) that extends inside the substantially U-shaped bead wall (4) and surrounds at least the fixed portion on the tip side of the fan blade (2) that easily vibrates is particularly effective for vibration isolation. There is. Further, by providing a bead wall (4b) extending outside the substantially U-shaped bead wall (4), particularly toward the tip corner of the fan blade (2), the effect of increasing rigidity (natural frequency) is further exerted. Be done.
【0008】[0008]
以上説明したように本考案による金属製軸流ファンは、特にスパイダー(1) の 突出壁(1')とのなすそれぞれの固着部を包囲してその表面に前記ビード壁(4) を 備えたファンブレード(2) をもって構成するため、該ビード壁での補強機能とそ れに伴う剛性の向上及び固有振動数の上昇によって前記機関側の駆動状態にあっ て、ファンブレード(2) 側のそれぞれの固着部に加わる応力を吸収して効果的に 軽減せしめることができ、該ファンブレード側の固着部での亀裂、弛みの憂いを なくして長期に確実に固着状態を維持するとなすことができる極めて有用な金属 製軸流ファンである。 As described above, the metal axial fan according to the present invention has the bead wall (4) on the surface surrounding the respective fixed portions formed by the protruding wall (1 ') of the spider (1). Since the fan blades (2) are used, they are in the drive state on the engine side due to the reinforcing function at the bead wall, the rigidity improvement accompanying it, and the increase in natural frequency. The stress applied to the fixed portion of the fan blade can be absorbed and effectively reduced, and the fixed state can be reliably maintained for a long period of time without the fear of cracks or slack in the fixed portion on the fan blade side. It is a useful metal axial fan.
【図1】本考案の実施例に係る金属製軸流ファンの一部
の切欠き正面図である。FIG. 1 is a partially cutaway front view of a metal axial fan according to an embodiment of the present invention.
【図2】他の実施例の同上図1相当図である。FIG. 2 is a view corresponding to FIG. 1 of the same as another embodiment.
【図3】図1A−A線の拡大による断面図である。FIG. 3 is a cross-sectional view taken along line AA of FIG.
【図4】従来例に係る金属製軸流ファンの拡大による固
着部の横断面図である。FIG. 4 is a transverse cross-sectional view of a fixing portion by enlarging a metal axial fan according to a conventional example.
2 ファンブレード 4、4a、4b ビード壁 2 Fan blades 4, 4a, 4b Bead wall
Claims (3)
イダーの該突出壁部に、それぞれファンブレードを外方
への放射状にリベットによって固着してなる軸流ファン
において、前記それぞれの固着部を略U字状に包囲して
ファンブレード(2) 側の表面に、凹状もしくは凸状のビ
ード壁(4) を備えて構成したことを特徴とする金属製軸
流ファン。1. An axial fan in which fan blades are radially fixed outward by rivets to the protruding wall portions of a spider having a plurality of protruding walls on the circumferential side thereof. An axial fan made of metal, characterized in that the fixed portion is enclosed in a substantially U shape and a concave or convex bead wall (4) is provided on the surface of the fan blade (2) side.
から内側に延長するビード壁(4a)を更に設けたことを特
徴とする請求項1記載の金属製軸流ファン。2. A bead wall (4) surrounding the fixed part.
The metal axial fan according to claim 1, further comprising a bead wall (4a) extending inwardly from the inner wall.
b)を更に延長したことを特徴とする請求項1記載の金属
製軸流ファン。3. A bead wall (4) outward from the bead wall (4).
The axial fan made of metal according to claim 1, characterized in that b) is further extended.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4322692U JPH0596494U (en) | 1992-05-29 | 1992-05-29 | Metal axial fan |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4322692U JPH0596494U (en) | 1992-05-29 | 1992-05-29 | Metal axial fan |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0596494U true JPH0596494U (en) | 1993-12-27 |
Family
ID=12658004
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4322692U Pending JPH0596494U (en) | 1992-05-29 | 1992-05-29 | Metal axial fan |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0596494U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011094851A (en) * | 2009-10-28 | 2011-05-12 | Fujitsu General Ltd | Duct type air conditioner |
JP2020094549A (en) * | 2018-12-13 | 2020-06-18 | 三菱電機株式会社 | Propeller fan |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5391410A (en) * | 1977-01-19 | 1978-08-11 | Wallace Murray Corp | Thin plate fan assenmbly |
-
1992
- 1992-05-29 JP JP4322692U patent/JPH0596494U/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5391410A (en) * | 1977-01-19 | 1978-08-11 | Wallace Murray Corp | Thin plate fan assenmbly |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011094851A (en) * | 2009-10-28 | 2011-05-12 | Fujitsu General Ltd | Duct type air conditioner |
JP2020094549A (en) * | 2018-12-13 | 2020-06-18 | 三菱電機株式会社 | Propeller fan |
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