JPS6210532A - Ventilation fan - Google Patents

Abstract

PURPOSE:To make it possible to instantaneously and readily carry out attachment or detachment of a vane by providing a vane having at its central part a boss part at the center fixed to a motor shaft and a spinner fitted to the boss part. CONSTITUTION:Fitting of a vane 3 is carried out in such a manner that as small projections 11 provided around the inner periphery of a hole 10 of a spinner 9 is elastically deformed around the outer periphery of a boss part 7, the boss part 7 is forced into the hole 10, the small projections 11 are engaged with slant grooves 6, the spinner 9 is rotated to align L-shaped cutaway portion 12 with an I-shape 8 of the boss part 7, a motor shaft 1 is inserted into a hole 5, a pin 2 is inserted into a hole 5 so that it reaches the deepest portion of the I-shaped cutaway portion 8, the spinner 9 is rotated in the left hand, and the pin is fixed between the deepest portion of the I- shaped cutaway portion 8 and a constricted part 12a of the L-shaped cutaway portion 12. Further, the removal of the vane 3 is carried out in a manner reverse to the fitting procedure. That is, the spinner 9 is rotated in the right hand, and the L-shaped cutaway portion 12 of the spinner 9 is aligned with the I-shaped cutaway portion of the bass part 7, and extracted from the motor shaft 1 whereby the vane 3 is removed.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、壁または天井等に取付け、室内の換気を行な
う換気扇に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a ventilation fan that is attached to a wall or ceiling to ventilate a room.

従来の技術 近年、換気扇をより狭いスペースに取シ付けるため羽根
厚み寸法のより薄いものおよび羽根取付方法のよシ簡略
化が望まれている。BACKGROUND OF THE INVENTION In recent years, in order to install a ventilation fan in a narrower space, there has been a demand for thinner blades and a simpler method for installing the blades.

このようなことから、従来の換気扇の羽根固定は、たと
えば第８図に示すよるに、回転軸であるシャフト１０１
の先端部にねじ部を設け、このねじ部を軸方向と平行に
切欠き部１０１ａを設け、他方、羽根１０２は中心にシ
ャフト１０１が嵌入する穴を貫通して設け、その穴の先
端部に切欠き部１０１ａに合致する凸部１０２ａを設け
である。この構成により、シャフト１０１を羽根１０２
に挿入すると互に切欠き部１０１ａと凸部１０２ａが噛
み合い回転方向へのストッパーとなる。軸方向の固定は
、羽根１０２を貫通したシャフト１０１の先端ねじ部に
スピンナ１０３をねじ込むことによシ達成するものであ
った。For this reason, the blades of conventional ventilation fans are fixed on the shaft 101, which is the rotation axis, as shown in FIG. 8, for example.
A threaded portion is provided at the tip of the screw portion, and a notch portion 101a is provided in the threaded portion in parallel with the axial direction.On the other hand, the blade 102 is provided with a hole in the center into which the shaft 101 is inserted, and a notch portion 101a is provided in the threaded portion in parallel with the axial direction. A protrusion 102a that matches the notch 101a is provided. With this configuration, the shaft 101 is connected to the blade 102.
When inserted, the notch 101a and the convex portion 102a engage with each other, forming a stopper in the rotational direction. Fixation in the axial direction was achieved by screwing the spinner 103 into the threaded end of the shaft 101 passing through the blade 102.

発明が解決しようとする問題点 このような従来の構成では、羽根１０２を脱着する場合
、スピンナ１０３をシャフト１０１にもうけたネジ１１
０１８分だけ多数回側さなければならないため、脱着に
時間がかかるという問題があった。また、シャフト１０
１と羽根１０２の固定はネジのためネジ山が合いにくい
という問題があった。Problems to be Solved by the Invention In such a conventional configuration, when the blade 102 is attached or detached, the spinner 103 is attached to the shaft 101 using the screw 11.
There was a problem in that it took a long time to attach and detach because it had to be attached many times for 0.18 minutes. Also, shaft 10
1 and the blade 102 are fixed using screws, so there was a problem that the screw threads were difficult to match.

本発明はこのような問題点を解決するもので１羽根脱着
が瞬時に、また容易に確実に行える換気扇を提供するも
のである。The present invention solves these problems and provides a ventilation fan in which one blade can be attached and detached instantaneously, easily, and reliably.

可聴を解決するための手段 この問題点を解決するために本発ＢＡ／／ｉ、モータ軸
と、このモータ軸に直角方向に軸を通して取付けられた
羽根回り止め用ピンと、前記モータ軸に固着される中央
にボス部を有する羽根と、前記ボス部と嵌合するスピン
ナとを有し、前記ボス部には、前記モータ軸が挿入され
る軸穴と、この軸穴と直角に前記モータ軸の挿入側端面
に工形状切欠きと、外周に斜め状の牌とを設け、前記ス
ピンナには、前記ボス部の外周と嵌合する穴と、この穴
と直角に前記ボス部挿入側端面にＬ形状切欠きと前記穴
の内周に小突起を設けたものである。Means for Solving Audible Problems In order to solve this problem, the present invention BA//i includes a motor shaft, a blade rotation stopper pin attached through the motor shaft in a direction perpendicular to the motor shaft, and a pin fixed to the motor shaft. a spinner that fits into the boss part; the boss part has a shaft hole into which the motor shaft is inserted; and a shaft hole in which the motor shaft is inserted perpendicularly to the shaft hole. A machine-shaped notch is provided on the insertion side end surface and an oblique tile is provided on the outer periphery, and the spinner has a hole that fits with the outer periphery of the boss portion, and an L hole on the insertion side end surface of the boss portion at right angles to the hole. A small projection is provided on the inner periphery of the shaped notch and the hole.

作　　用 この構成によシ、羽根取付は時には、あらかしめスピン
ナの穴の内周に設けた／ＪＳ突起とボス部の斜め状の溝
を係合させて一体化したスピンナと羽根をモータ軸に嵌
入して羽根を押えながらスピンナを回転させることによ
シ取付けられ、一方、取外しは羽根を押さえながらスピ
ンナを取付は時とは逆に回転させることにより行うこと
ができ脱着はごく簡単に行うことができることとなる。Operation With this configuration, the blades are sometimes attached by engaging the JS protrusion provided on the inner periphery of the spinner hole and the diagonal groove of the boss to attach the integrated spinner and blade to the motor shaft. It is attached by inserting it and rotating the spinner while holding the blade, while removal can be done by holding the blade and rotating the spinner in the opposite direction from the time of installation, making it very easy to attach and remove. will be possible.

実施例 、　以下、本発明の一実施例について第１図〜第７図に
もとづき説明する。図において、１はモータ軸であシ軸
心に対して直角方向に軸心を貫通して外径に突出したピ
ン２を設けている。３は羽根であシ、放射状に設けたグ
レード３ａの結合部であるリプ４の中央部にボス部７を
有し、このボス部７の回転中心に先詰りの軸穴６を、ま
た、外周には斜め状の溝６を、そして軸穴６の入口部分
には軸穴６の軸心に直角に軸心を通る工形状切欠き８を
設けている。９はスピンナであり、中央部にボス部７の
外周と嵌合する先詰シの穴１ｏと、この穴１０の内周に
ボス部７の外周に設けた斜め状の＠ｅと係合する小突起
１１と、前記穴１ｏの入口部分に穴１ｏの軸心に直角に
軸心を通るＬ形状切欠き１２を設けている。Embodiment Hereinafter, an embodiment of the present invention will be described based on FIGS. 1 to 7. In the figure, reference numeral 1 designates a motor shaft, and is provided with a pin 2 that passes through the shaft center in a direction perpendicular to the shaft center and projects to the outer diameter. 3 is a blade, and has a boss part 7 in the center of the lip 4, which is a joint part of grade 3a provided radially. An oblique groove 6 is provided in the shaft hole 6, and a machine-shaped notch 8 is provided at the entrance portion of the shaft hole 6, passing through the shaft center at right angles to the shaft center. Reference numeral 9 denotes a spinner, which has a tip-filled hole 1o in its center that fits with the outer periphery of the boss 7, and engages with an oblique @e provided on the outer periphery of the boss 7 in the inner periphery of this hole 10. A small protrusion 11 and an L-shaped notch 12 passing through the axis of the hole 1o at right angles to the axis of the hole 1o are provided at the entrance of the hole 1o.

上記構成において、羽根３の取付けは、スピンナ９の穴
１ｏの内周に設けた小突起１１をボス部７の外周で弾性
変形させながらボス部７をスピンナ９の穴１０に押込み
、小突起１１と斜め状の溝６を係合させ、スピンナ９を
回転させＬ形状切欠き１２と、ボス部７の工形状切欠き
８を一致させ、モータ軸１をボス部７の軸穴５に挿入し
、ピン２か工形状切欠き８の最深部までくるように入れ
、スピンナ９を左回シに回転させることにより、ピン２
を工形状切欠き８の最深部とＬ形状切欠き１２°のくび
れ部１２ａの間で固定する。In the above configuration, the blade 3 is attached by pushing the boss part 7 into the hole 10 of the spinner 9 while elastically deforming the small projection 11 provided on the inner periphery of the hole 1o of the spinner 9 on the outer periphery of the boss part 7. The spinner 9 is rotated to align the L-shaped notch 12 with the machined notch 8 of the boss 7, and the motor shaft 1 is inserted into the shaft hole 5 of the boss 7. , insert the pin 2 so that it reaches the deepest part of the notch 8, and rotate the spinner 9 counterclockwise to remove the pin 2.
is fixed between the deepest part of the machine-shaped notch 8 and the constricted part 12a of the L-shaped notch 12°.

また、取外しは、取付けの逆であシスピンナ９を右回シ
に回転させ、スピンナ９のＬ形状切欠き１２とボス部７
の工形状切欠きを一致させ、モータ軸１よシ引き抜くこ
とにより羽根３を取外すことができる。In addition, for removal, rotate the system pinner 9 clockwise in the opposite direction to the installation, and remove the L-shaped notch 12 of the spinner 9 and the boss portion 7.
The blade 3 can be removed by aligning the notches in the machined shape and pulling it out from the motor shaft 1.

発明の効果 以上の実施例の説明より明らかなように本発明によれば
、あらかじめ羽根ボス部と回転自在に係合して一体化し
たスピンナをわずかに回すだけで羽根が瞬時に簡単にか
つ確実に、着脱できるため換気扇の取付は部が狭い場合
でも羽根の取替えが容易に行えるという効果が得られる
。Effects of the Invention As is clear from the description of the embodiments above, according to the present invention, the blades can be instantly and easily and reliably moved by simply slightly turning the spinner, which is integrated with the blade boss portion in a rotatable manner. In addition, since it is removable, the blades can be easily replaced even if the ventilation fan is installed in a narrow space.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の一実施例による換気扇の羽根と、スピ
ンナとの取付状態を示す斜視図、第２図は同換気扇の羽
根取付状態を示す斜視図、第３図は同換気扇の第１図に
おけるスピンナ部のＡ−Ａ’断面図、第４図は第３図の
Ｂ−Ｂ’断面図、第５図は同換気扇のボス部を示す斜視
図、第６図は同換気扇の非固定時の羽根ボスと、スピン
ナの状態図、第７図は同固定状態図、第８図は従来の換
気扇の羽根取付部を示す分解斜視図である。 １・・・・・・モータ軸、２・・・・・・ピン、３・・
・・・・羽根、６・・・−・・軸穴、６・・・・・斜め
状の溝、７−・・・・・ボス部、８・・・・・・工形状
切欠き、９・・・・・・スピンナ、１ｏ・・・・・・穴
、１１・・・・・・小突起、１２・・・−・・Ｌ形状切
欠き。 ３°−り］碍 ９−−−スむ０ン丈 ４０−ｍ−化 第６図 ロコ 区 区　　　　　　。 ４　　　　　　派 法FIG. 1 is a perspective view showing how the blades of a ventilation fan and a spinner are attached according to an embodiment of the present invention, FIG. 2 is a perspective view showing how the blades of the ventilation fan are attached, and FIG. Fig. 4 is a sectional view taken along BB' of Fig. 3, Fig. 5 is a perspective view of the boss of the ventilation fan, and Fig. 6 is an unfixed part of the ventilation fan. FIG. 7 is an exploded view of the blade boss and the spinner, and FIG. 8 is an exploded perspective view showing the blade attachment portion of a conventional ventilation fan. 1...Motor shaft, 2...Pin, 3...
...Blade, 6 ... - ... Shaft hole, 6 ... Diagonal groove, 7 - ... Boss part, 8 ... Machining shape notch, 9 ...Spinner, 1o...hole, 11...small protrusion, 12...L-shaped notch. 3°-ri] 碍9--sum 0-length 40-m-change Figure 6 loco ward. 4 School of Law

Claims (1)

【特許請求の範囲】[Claims] モータ軸と、このモータ軸に直角方向に貫通して取付け
られた羽根回り止め用ピンと、前記モータ軸に固着され
る中央にボス部を有する羽根と、前記ボス部と嵌合する
スピンナとを有し、前記ボス部には、前記モータ軸が挿
入される軸穴と、この軸穴と直角に前記モータ軸の挿入
側端面にＩ形状切欠きと、外周に斜め状の溝とを設け、
前記スピンナには、前記ボス部の外周と嵌合する穴と、
この穴と直角に前記ボス部挿入側端面にＬ形状切欠きと
前記穴の内周に小突起を設けた換気扇。The motor has a motor shaft, a blade rotation prevention pin attached to the motor shaft so as to pass through the motor shaft in a perpendicular direction, a blade having a boss portion at the center that is fixed to the motor shaft, and a spinner that fits into the boss portion. The boss portion is provided with a shaft hole into which the motor shaft is inserted, an I-shaped notch on the insertion side end surface of the motor shaft perpendicular to the shaft hole, and an oblique groove on the outer periphery,
The spinner includes a hole that fits with the outer periphery of the boss portion;
The ventilation fan is provided with an L-shaped notch on the end surface on the insertion side of the boss portion at right angles to the hole, and a small protrusion on the inner periphery of the hole.