JP5542532B2

JP5542532B2 - Fan attaching / detaching device and blower

Info

Publication number: JP5542532B2
Application number: JP2010133777A
Authority: JP
Inventors: 智和山岸
Original assignee: Fuji Industrial Co Ltd
Current assignee: Fuji Industrial Co Ltd
Priority date: 2010-06-11
Filing date: 2010-06-11
Publication date: 2014-07-09
Anticipated expiration: 2030-06-11
Also published as: JP2011256823A

Description

本発明は、モータシャフトに対するファンの着脱装置及びこの着脱装置を備えた送風機に関する。 The present invention relates to a fan attachment / detachment device with respect to a motor shaft and a blower provided with the attachment / detachment device.

調理器具の上方に設置されて、調理により発生する油煙等を捕集し屋外へ排気または浄化して室内へと循環させるレンジフードでは、吸込流路の途中に設けられているグリスフィルタによって、油煙から油を分離して捕獲している。 In a range hood that is installed above cooking utensils and collects oily smoke generated by cooking, exhausts or purifies it outdoors, and circulates it indoors, the oil filter is provided by a grease filter provided in the middle of the suction channel. The oil is separated and captured.

しかし、このグリスフィルタによる油の捕獲を完全に行うことは難しく、一部はレンジフード内部に設けられている送風機へと流入して、送風機で捕獲されることになる。したがって、グリスフィルタはもちろんのこと送風機にも油が付着するため、定期的にこれらの部品を洗浄する必要がある。 However, it is difficult to completely capture the oil by the grease filter, and part of the oil flows into the blower provided inside the range hood and is captured by the blower. Therefore, since oil adheres not only to the grease filter but also to the blower, it is necessary to periodically clean these parts.

しかしながら、従来の送風機は、羽根をモータシャフトに連結する方法として、羽根にモータシャフトを連通させて、モータシャフトに設けられている雄ネジを羽根から突出させ、そこへ雌ネジを持った連結用キャップを締め付けることにより連結させている。そのため、従来の送風機では、羽根を取り外す際には、片手で羽根を抑えながら連結用キャップを回転させる必要があった。また、レンジフードの下部には調理器具が設置されているため、羽根を取り外す作業は無理な姿勢となることがあり、そのような姿勢での両手での作業は苦労を要する場合があった。 However, in the conventional blower, as a method of connecting the blade to the motor shaft, the motor shaft is communicated with the blade, the male screw provided on the motor shaft is protruded from the blade, and a connecting screw having a female screw is provided there. It is connected by tightening the cap. Therefore, in the conventional blower, when removing the blade, it is necessary to rotate the coupling cap while holding the blade with one hand. In addition, since cooking utensils are installed in the lower portion of the range hood, the operation of removing the blades may be in an unreasonable posture, and the operation with both hands in such a posture may be difficult.

このような問題を解決するための先行技術として、特許文献１がある。
特許文献１では、回転軸に設けた羽根回り止め部に係合するボス部と、回転軸に保持される保持部と押圧部を一体に形成して一対に設けた羽根ロック部をブレード側に備え、一対の保持部で回転軸を保持し、押圧部を指先で挟む操作により保持部の保持力を解除して羽根車を着脱することにより、指先で挟む簡単な作業で羽根車を取り外すことのできる羽根車の着脱装置が開示されている。 As a prior art for solving such a problem, there is Patent Document 1.
In Patent Literature 1, a boss portion that engages with a blade rotation prevention portion provided on a rotating shaft, a holding portion that is held by the rotating shaft, and a pressing portion are integrally formed, and a blade lock portion that is provided as a pair is disposed on the blade side. It is possible to remove the impeller by a simple operation of pinching with a fingertip by holding the rotating shaft with a pair of holding portions and releasing the holding force of the holding portion by an operation of pinching the pressing portion with the fingertip and detaching the impeller An impeller attachment / detachment device that can be used is disclosed.

また、モータシャフトから羽根が抜けないように、確実に両者を係合させる先行技術として、特許文献２がある。
特許文献２では、回転軸の外周部に形成した係合溝と、送風ファンに設けられ係合溝に係合して送風ファンの抜け止めをなす平板状の係合部材と、押圧操作により係合部材を移動可能にする押釦と、係合部材の先端部に当接する平板状の板ばねとを具備し、押釦を押圧操作することにより、係合部材の係合孔が回転軸の係合溝から外れるように形成する送付ファン装置が開示されている。 Moreover, there exists patent document 2 as a prior art which engages both reliably so that a blade | wing may not come off from a motor shaft.
In Patent Document 2, an engagement groove formed on the outer peripheral portion of the rotating shaft, a flat engagement member that is provided on the blower fan and engages with the engagement groove to prevent the blower fan from being removed, and a pressing operation are used. A push button that enables the combined member to move and a flat plate spring that abuts on the tip of the engagement member. By pressing the push button, the engagement hole of the engagement member engages the rotating shaft. A delivery fan device is disclosed that is configured to detach from the groove.

特開２００４−１２４７８２号公報JP 2004-124782 A 特開２０１０−４８２０３号公報JP 2010-48203 A

しかし、特許文献１に示される構造では、モータシャフトを同一高さで挟み込むために、仮に円形などの切り欠き部がない形状だと構造上、モータシャフトを同一高さで挟み込むことは不可能となるので、その挟むための保持部材は略Ｕ字状としなければならない。
この様な構造であると、保持部材が弾性を有していることと、形状的に安定した形状ではないこと、挟持面が少ないことなどから、保持部材自体の強度や挟持力やその安定性に問題がある。 However, in the structure shown in Patent Document 1, in order to sandwich the motor shaft at the same height, it is impossible to sandwich the motor shaft at the same height if the shape has no cutout portion such as a circle. Therefore, the holding member for pinching must be substantially U-shaped.
With such a structure, since the holding member has elasticity, it is not in a stable shape, and there are few clamping surfaces, the strength, clamping force and stability of the holding member itself There is a problem.

また、特許文献２に示される構造では、ファンの装着時にモータシャフトの片側から圧力が掛ったり、コイルばねや支持軸及び押釦が回転軸の周りに点在しているため、送風ファンの重心位置が回転軸と一致しないので、重量バランスが悪く、モータの回転に偏心を起こし、余計な負荷をかけることになるなどの問題がある。 Further, in the structure shown in Patent Document 2, pressure is applied from one side of the motor shaft when the fan is mounted, and coil springs, support shafts, and push buttons are scattered around the rotation shaft. Does not coincide with the rotation axis, so that there is a problem that the weight balance is poor, the rotation of the motor is eccentric, and an extra load is applied.

そこで、本発明は、上記問題に鑑みてなされたものであり、本発明の目的とするところは、ファンの着脱が容易に行えるとともに、安定した挟持力を持った信頼性の高い着脱装置及びこの着脱装置を備えた送風機を提供することにある。 Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to make it possible to easily attach and detach a fan, and to provide a highly reliable attaching and detaching device having a stable clamping force. It is providing the air blower provided with the attachment / detachment apparatus.

上記課題を解決するために、本発明のある観点によれば、２つの挟持部材を備える、モータシャフトに対するファンの着脱装置であって、各前記挟持部材は、前記モータシャフトの横断面より大きい開口を有する開口部と、前記開口部の一部に隣接して立ち上がる突起部と、前記開口部の側面の一部と前記突起部の側面の一部から形成された、ファンの装着時に前記モータシャフトに当接する当接面積が２箇所で線状に接するよりも大きくなるように窪みを有する当接面と、を有し、一方の挟持部材の前記突起部を、他方の挟持部材の前記開口部に、互いに嵌入させることにより、前記２つの挟持部材が互いに摺接し、ファンの装着時に、前記一方の挟持部材の前記当接面と前記他方の挟持部材の前記当接面により前記モータシャフトを狭持する、ことを特徴とする着脱装置が提供される。
この構成によれば、挟持部材が、両側から同じ高さの位置でモータシャフトを挟持することができ、また、略Ｏ字状であることにより形状的に安定した形状となり、その結果、重量バランスが良く、送風機を高速回転させても余計なブレや振動が発生せずに、静かな送風機とすることができると共に、モータシャフトやモータ軸受けへ余計な負荷が掛らないため、部品寿命を長くすることができる。また、本着脱装置は、モータシャフトを中心として点対称のとなっているので、回転軸に対する重心位置のズレもなく、重量バランスに優れている。
In order to solve the above-described problem, according to an aspect of the present invention, there is provided a fan attachment / detachment device including two clamping members, each of the clamping members having an opening larger than a cross section of the motor shaft. An opening having a protrusion, a protrusion rising adjacent to a part of the opening, a part of a side surface of the opening, and a part of a side surface of the protrusion. An abutting surface having a depression so that the abutting area abutting on the two is larger than that in linear contact at two locations, and the protrusion of one clamping member is connected to the opening of the other clamping member When the fan is mounted, the motor shaft is narrowed by the contact surface of the one sandwiching member and the contact surface of the other sandwiching member. Holding That, attachment apparatus is provided, characterized in that.
According to this configuration, the clamping member can clamp the motor shaft at the same height from both sides, and has a substantially stable shape due to being substantially O-shaped, resulting in a weight balance. It is good, and even if the fan is rotated at a high speed, there is no unnecessary blurring or vibration, and the fan can be made quieter and no extra load is applied to the motor shaft or motor bearing, thus extending the service life of the parts. can do. Moreover, since this attachment / detachment device is point-symmetric about the motor shaft, there is no deviation of the center of gravity with respect to the rotation axis, and the weight balance is excellent.

また、前記当接面は、前記モータシャフトにおける前記当接面が当接する部分の曲率と同じ曲率を有することを特徴としてもよい。
この構成によれば、挟持部材がモータシャフトに当接する面積が大きくなり、確実に挟持することができる。 The contact surface may have the same curvature as that of a portion of the motor shaft that contacts the contact surface.
According to this configuration, the area where the clamping member comes into contact with the motor shaft is increased, and the clamping can be reliably performed.

また、前記各挟持部材の厚さと前記突起部の高さが等しいことを特徴としてもよい。
この構成によれば、同一の挟持部材を用いることにより、部品コストや製造コストを低減できる。 Moreover, the thickness of each said clamping member and the height of the said projection part are good also as the characteristics.
According to this structure, component cost and manufacturing cost can be reduced by using the same clamping member.

また、前記モータシャフトの外周部において、前記当接面が当接する部分が円周状に凹部を形成している場合において、前記当接面は、前記凹部に適合する凸部であることを特徴としてもよい。
この構成によれば、挟持部材がモータシャフトに当接する面積がより大きくなり、確実に挟持することができる。 In addition, in the outer peripheral portion of the motor shaft, when the portion with which the contact surface contacts forms a concave portion in a circumferential shape, the contact surface is a convex portion that fits into the concave portion. It is good.
According to this configuration, the area where the clamping member comes into contact with the motor shaft becomes larger, and the clamping can be reliably performed.

また、さらに、前記２つの挟持部材の摺動を案内するガイド部材を備えることを特徴としてもよい。
この構成によれば、ファンの着脱時に、挟持部材の摺動を安定させることができる。 Further, a guide member for guiding the sliding of the two holding members may be provided.
According to this configuration, the sliding of the clamping member can be stabilized when the fan is attached or detached.

また、さらに、ファンの装着時に、前記一方の挟持部材の前記当接面と前記他方の挟持部材の前記当接面により前記モータシャフトを狭持させるための付勢手段を備えることを特徴としてもよい。
この構成によれば、ネジ止め等に比し、着脱操作を容易化できる。 Further, the apparatus may further comprise an urging means for sandwiching the motor shaft by the contact surface of the one clamping member and the contact surface of the other clamping member when the fan is mounted. Good.
According to this configuration, the attaching / detaching operation can be facilitated as compared with screwing or the like.

また、上記課題を解決するために、モータと、ファンと、該ファンを前記モータのモータシャフトに着脱自在に取り付ける着脱装置を備えた送風機であって、前記着脱装置は、上記に記載の着脱装置であることを特徴とする送風機が提供される。
この構成によれば、着脱容易で、かつ、安定した挟持力を持った信頼性の高い着脱装置を備えた送風機を提供できる。 Further, in order to solve the above-mentioned problem, a blower comprising a motor, a fan, and an attachment / detachment device for detachably attaching the fan to a motor shaft of the motor, wherein the attachment / detachment device is the attachment / detachment device described above. A blower characterized in that is provided.
According to this configuration, it is possible to provide a blower including a highly reliable attachment / detachment device that is easy to attach / detach and has a stable clamping force.

以上説明したように、本発明によれば、ファンの着脱が容易に行えるとともに、安定した挟持力を持った信頼性の高い着脱装置及びこの着脱装置を備えた送風機を提供することができる。 As described above, according to the present invention, a fan can be easily attached and detached, and a highly reliable attachment / detachment device having a stable clamping force and a blower including the attachment / detachment device can be provided.

第１実施形態における挟持部材の(a)平面図、(b)正面図、(c)側面図である。It is the (a) top view, (b) front view, (c) side view of the clamping member in 1st Embodiment. 第１実施形態における挟持部材の斜視図である。It is a perspective view of the clamping member in a 1st embodiment. 第１実施形態において、２つの挟持部材を組み合わせた場合の(a)平面図、(b)正面図、(c)側面図である。In 1st Embodiment, it is (a) top view at the time of combining two clamping members, (b) Front view, (c) Side view. 第１実施形態において、２つの挟持部材を組み合わせた場合の斜視図である。In 1st Embodiment, it is a perspective view at the time of combining two clamping members. 第１実施形態において、２つの挟持部材でモータシャフトを挟持した場合の(a)平面図、(b)正面図、(c)側面図である。In the first embodiment, (a) a plan view, (b) a front view, and (c) a side view when a motor shaft is clamped by two clamping members. 第１実施形態において、２つの挟持部材でモータシャフトを挟持した場合の斜視図である。In 1st Embodiment, it is a perspective view at the time of clamping a motor shaft with two clamping members. 第２実施形態における挟持部材の(a)平面図、(b)斜視図である。It is (a) top view and (b) perspective view of the clamping member in 2nd Embodiment. 第３実施形態における挟持部材の正面図である。It is a front view of the clamping member in 3rd Embodiment. 第４実施形態における挟持部材の(a)平面図、(b)正面図、(c)側面図、(d)底面図、(e)斜視図である。It is (a) top view, (b) front view, (c) side view, (d) bottom view, (e) perspective view of the clamping member in 4th Embodiment. 第４実施形態において、２つの挟持部材でモータシャフトを挟持した場合の、モータシャフトの中心軸における断面図である。In 4th Embodiment, it is sectional drawing in the central axis of a motor shaft at the time of clamping a motor shaft with two clamping members. 第４実施形態において、２つの挟持部材でモータシャフトを挟持した場合の斜視図である。In 4th Embodiment, it is a perspective view at the time of clamping a motor shaft with two clamping members. 第４実施形態におけるガイド部材の(a)平面図、(b)正面図、(c)側面図、(d)斜視図である。It is (a) top view, (b) front view, (c) side view, (d) perspective view of the guide member in 4th Embodiment. 第４実施形態において、ガイド部材が２つの挟持部材を保持した場合の斜視図である。In 4th Embodiment, it is a perspective view when a guide member hold | maintains two clamping members. 第４実施形態におけるカバーの(a)平面図、(b)正面図、(c)側面図、(d)斜視図である。It is (a) top view, (b) front view, (c) side view, (d) perspective view of a cover in the fourth embodiment. 第４実施形態において、カバーを取り付けた場合の斜視図（透視）である。In 4th Embodiment, it is a perspective view (perspective view) at the time of attaching a cover. 第４実施形態において、カバーを取り付けた場合の斜視図である。In 4th Embodiment, it is a perspective view at the time of attaching a cover. 第４実施形態において、付勢手段を取り付けた場合の(a)正面図、(b)斜視図である。In 4th Embodiment, (a) front view at the time of attaching a biasing means, (b) It is a perspective view. 第４実施形態の着脱装置を適用した送風機の(a)正面図、(b)Ａ−Ａにおける断面図である。It is the (a) front view of the air blower to which the attachment / detachment apparatus of 4th Embodiment is applied, (b) It is sectional drawing in AA.

以下では、図面を参照しながら、本発明の各実施形態に係る装置等について説明する。
＜第１実施形態＞
図１は、本実施形態における、挟持部材１１を示す。挟持部材１１は、平面視長方形をなし、短辺の一方に、人が着脱時に指で操作する操作部１５を備え、操作部１５は、指で操作しやすいように挟持部材１１の他の部分に比べ大きな厚みを有している。但し、他の部分に指で操作する十分の厚みがあれば、操作部１５が、他の部分より大きな厚みを有することに限定されない。 Below, the apparatus etc. which concern on each embodiment of this invention are demonstrated, referring drawings.
<First Embodiment>
FIG. 1 shows a clamping member 11 in the present embodiment. The sandwiching member 11 has a rectangular shape in plan view, and is provided with an operation unit 15 that is operated by a person with a finger on one of the short sides, and the operation unit 15 is another part of the sandwiching member 11 so that it can be easily operated with the finger. It has a greater thickness than However, the operation unit 15 is not limited to having a larger thickness than the other part as long as the other part has a sufficient thickness to be operated with a finger.

挟持部材１１は、開口部１２を備え、開口部１２は、平面視長方形をなしている。その長方形の大きさは、モータシャフトがこの中を通るため、モータシャフトの横断面よりも大きければよく、より具体的には、モータシャフトの横断面が円形をなす場合その円の直径より大きい辺を有する長方形であればよい。短辺側は、モータシャフトの直径よりわずかに大きい程度でよく、また、長辺側は、着脱時に挟持部材１１をスライドさせる際のスライド幅分大きくしておくとよい。なお、本実施形態では、開口部１２は長方形をなしているが、モータシャフトが中を通りスライドできる幅があればよく、これに限定されない。また、挟持部材１１における開口部１２の位置は、特に限定されず、適宜配置される。 The clamping member 11 includes an opening 12, and the opening 12 has a rectangular shape in plan view. The size of the rectangle may be larger than the cross section of the motor shaft because the motor shaft passes through this, and more specifically, the side larger than the diameter of the circle when the cross section of the motor shaft is circular. Any rectangle that has The short side may be slightly larger than the diameter of the motor shaft, and the long side may be increased by the slide width when the holding member 11 is slid during attachment / detachment. In addition, in this embodiment, although the opening part 12 has comprised the rectangle, what is necessary is just the width | variety which a motor shaft can slide through, and it is not limited to this. Further, the position of the opening 12 in the clamping member 11 is not particularly limited and is appropriately arranged.

挟持部材１１は、開口部１２の短辺の一方であって、操作部１５から遠い方の短辺（以降、この短辺を突起部辺という）に突起部１３を備える。より具体的には、突起部１３は、図１に示すように、直方体をなし、突起部１３の一の側面が、開口部１２の突起部辺の側面（内周面）と、平面として一体をなすように配置されている。 The sandwiching member 11 includes a protrusion 13 on one of the short sides of the opening 12 and on the short side farther from the operation unit 15 (hereinafter, this short side is referred to as a protrusion side). More specifically, as shown in FIG. 1, the projecting portion 13 is a rectangular parallelepiped, and one side surface of the projecting portion 13 is integrated with the side surface (inner peripheral surface) of the projecting portion side of the opening 12 as a plane. It is arranged to make.

この一体をなした平面は、その一部を用いて、モータシャフトを挟持する。本実施形態の場合、平面を以って円筒形のモータシャフトを挟持するので、「その一部」とはほぼ線状の細長い部分を意味する。しかし、例えば、モータシャフトの挟持される部分が横断面視で矩形の場合は、その矩形の側面に当接する面が、「その一部」となる。従って、ファンを装着する際に、開口部１２の側面（内周面）の一部と、その開口部１２の側面と一体となった突起部１３の側面の一部から形成された面が、モータシャフトに当接し、そのようにして当接する面、即ち、当接面１４が、モータシャフトを挟持する。当接面１４は、モータシャフトを確実に挟持するため、大きな摩擦力を生ずる表面を有することが好ましい。 A part of the integrated plane sandwiches the motor shaft. In the case of this embodiment, the cylindrical motor shaft is clamped with a flat surface, so “part thereof” means a substantially linear elongated portion. However, for example, when the portion where the motor shaft is sandwiched is rectangular in a cross-sectional view, the surface that contacts the side surface of the rectangle is “part of it”. Therefore, when the fan is mounted, a surface formed from a part of the side surface (inner peripheral surface) of the opening 12 and a part of the side surface of the protrusion 13 integrated with the side surface of the opening 12 is The surface that contacts the motor shaft and thus contacts, that is, the contact surface 14 sandwiches the motor shaft. The contact surface 14 preferably has a surface that generates a large frictional force in order to securely clamp the motor shaft.

突起部１３の側面視の高さは、本実施形態においては、挟持部材１１の側面視の厚さと同じである。但し、詳しくは後述するように、これに限定されない。また、突起部１３の幅は、開口部１２の短辺の長さと同じであるが、これに限定されない。しかし、後述するように、突起部１３は、他の挟持部材１１の開口部１２に嵌りながら互いが摺動するので、ガタつかないで円滑に摺動するためには、突起部１３の幅は、開口部１２の短辺の長さとほぼ同じであることが好ましい。 The height of the protrusion 13 in a side view is the same as the thickness of the holding member 11 in a side view in the present embodiment. However, as will be described in detail later, the present invention is not limited to this. The width of the protrusion 13 is the same as the length of the short side of the opening 12, but is not limited to this. However, as will be described later, the protrusions 13 slide with each other while being fitted in the opening 12 of the other holding member 11, so that the protrusion 13 has a width in order to slide smoothly without rattling. The length of the short side of the opening 12 is preferably substantially the same.

挟持部材１１は、突起部１３が取り付けられる面の側であって、開口部１２の長辺の外側に摺動面１６を備え、摺接面１６は、後述するように、２つの挟持部材１１同士が、互いの突起部１３を開口部１２に嵌めながら摺動するための面である。従って、摺接面１６は、摩擦力の少ない滑らかに仕上げられることが好ましい。 The clamping member 11 includes a sliding surface 16 on the side of the surface to which the protruding portion 13 is attached and outside the long side of the opening 12, and the sliding contact surface 16 includes two clamping members 11 as will be described later. These are surfaces for sliding while fitting the protrusions 13 to the openings 12. Therefore, it is preferable that the sliding contact surface 16 is finished smoothly with little frictional force.

図２は、本実施形態における挟持部材１１の斜視図である。指で操作しやすいように挟持部材１１の他の部分に比べ厚い操作部１５を備え、開口部１２により形成される内周面の一つ（突起部辺の面）と、突起部１３の一の側面が一つの平面を形成し、その平面の一部が、モータシャフトを挟持するための当接面１４を形成している。また、摺接面１６が、突起部１３と同じ側に備えられる。 FIG. 2 is a perspective view of the clamping member 11 in the present embodiment. An operation portion 15 that is thicker than the other portions of the holding member 11 is provided so that it can be easily operated with a finger, and one of the inner peripheral surfaces formed by the opening 12 (the surface of the protruding portion side) and one of the protruding portions 13 are provided. These side surfaces form one plane, and a part of the plane forms a contact surface 14 for holding the motor shaft. The sliding contact surface 16 is provided on the same side as the protruding portion 13.

図３は、本実施形態の２つの挟持部材１１を組み合わせた場合を示す図であって、モータシャフト２１を開口部１２に通す前の状態を示す。正面図(b)では、２つの挟持部材１１の突起部１３を互いに開口部１２に入れ、互いの摺接面１６により接している様子を示す。即ち、挟持部材１１Ｒの突起部１３Ｒは、挟持部材１１Ｌの開口部１２Ｌの中に入り、挟持部材１１Ｌの突起部１３Ｌは、挟持部材１１Ｒの開口部１２Ｒの中に入いり、摺接面１６Ｒと摺接面１６Ｌとが互いに接している。 FIG. 3 is a diagram showing a case where the two clamping members 11 of the present embodiment are combined, and shows a state before the motor shaft 21 is passed through the opening 12. In the front view (b), the projections 13 of the two clamping members 11 are inserted into the opening 12 and are in contact with each other by the sliding contact surface 16. That is, the protruding portion 13R of the holding member 11R enters the opening 12L of the holding member 11L, and the protruding portion 13L of the holding member 11L enters the opening 12R of the holding member 11R, and contacts the sliding surface 16R. The sliding contact surface 16L is in contact with each other.

突起部１３の高さと挟持部材１１の厚さは等しいので、正面視で突起部１３は、挟持部材１１により隠れて見えない。なお、モータシャフト２１は、挟持部材１１により挟持された際、上下にずれないように凹部２２を備えるが、ファンがシャフトからの脱落を防止するためには、凹部でなくてもよく、挟持部材１１により挟持されるシャフトの部分（被挟持部）より、シャフトの先端側が太くなっていればよい。 Since the height of the protruding portion 13 is equal to the thickness of the holding member 11, the protruding portion 13 is hidden by the holding member 11 and cannot be seen in front view. The motor shaft 21 includes a recess 22 so that the motor shaft 21 does not move up and down when being sandwiched by the sandwiching member 11. However, in order to prevent the fan from falling off the shaft, the motor shaft 21 may not be a recess. It is only necessary that the tip end side of the shaft is thicker than the portion of the shaft that is sandwiched by 11 (a sandwiched portion).

平面図(a)は、開口部１２の短辺の長さは、モータシャフト２１の直径とほぼ等しいことを示す。着脱するためには、シャフト２１の先端側の直径とほぼ等しいか、又は大きいことを要する。挟持部材１１は、モータシャフト２１が両方の挟持部材１１の開口部１２の中を通るように、互いの摺接面１６を接しながら摺動する。本図は、挟持部材１１Ｒと１１Ｌを摺動させて、モータシャフト２１が開口部１２Ｒと１２Ｌの両方を通る、２つの当接面１４Ｒと１４Ｌの最小限の距離を示している。実際に着脱する際には、通常この距離より大きくなるように、操作部１５Ｒと１５Ｌを両側から挟むようにし、挟持部材１１Ｒと１１Ｌを摺動させ、モータシャフト２１の先端部が両方の開口部を通るようにする。 The plan view (a) shows that the length of the short side of the opening 12 is substantially equal to the diameter of the motor shaft 21. In order to attach and detach, it is necessary to be approximately equal to or larger than the diameter of the tip side of the shaft 21. The clamping member 11 slides while contacting the sliding contact surfaces 16 so that the motor shaft 21 passes through the openings 12 of both the clamping members 11. This figure shows the minimum distance between the two contact surfaces 14R and 14L through which the motor shaft 21 passes through both the openings 12R and 12L by sliding the holding members 11R and 11L. When actually attaching and detaching, the operation portions 15R and 15L are usually sandwiched from both sides so as to be larger than this distance, the clamping members 11R and 11L are slid, and the tip end portion of the motor shaft 21 is both openings. To go through.

なお、本実施形態では、２つの挟持部材は、同一の一対の挟持部材１１を使用する。これにより、部材を共通化できるので、製造コストや部品コストを低減できる。 In the present embodiment, the two clamping members use the same pair of clamping members 11. Thereby, since a member can be made common, manufacturing cost and component cost can be reduced.

図４は、本実施形態において、２つの挟持部材を組み合わせた場合の斜視図であり、モータシャフト２１を開口部１２に通す前であって、挟持部材１１Ｒの突起部１３Ｒは、挟持部材１１Ｌの開口部１２Ｌの中に入り、挟持部材１１Ｌの突起部１３Ｌは、挟持部材１１Ｒの開口部１２Ｒの中に入いり、互いの当接面１４Ｒと１４Ｌとが対向していることを示す。また、操作部１５Ｒと１５Ｌにより、摺接面１６Ｒと１６Ｌを摺動させて、互いの当接面１４Ｒと１４Ｌとの距離を調節し、モータシャフト２１が通る両方の開口部１２Ｒと１２Ｌからなる開口部の大きさを調節する。 FIG. 4 is a perspective view in the case where two clamping members are combined in the present embodiment, and before the motor shaft 21 is passed through the opening 12, the protrusion 13R of the clamping member 11R is the same as that of the clamping member 11L. The protrusion 13L of the sandwiching member 11L enters the opening 12L and enters the opening 12R of the sandwiching member 11R, indicating that the contact surfaces 14R and 14L face each other. Further, the sliding portions 16R and 16L are slid by the operation portions 15R and 15L, the distance between the contact surfaces 14R and 14L is adjusted, and both openings 12R and 12L through which the motor shaft 21 passes are formed. Adjust the size of the opening.

図５は、本実施形態の２つの挟持部材１１を組み合わせた場合の図であって、モータシャフト２１を開口部１２に通し、挟持部材１１がモータシャフト２１を挟持した状態を示す。このようにするためには、図３(b)の状態から、両挟持部材１１Ｒと１１Ｌをモータシャフト２１の方へ下方に平行移動し、正面視モータシャフト２１の凹部２２の位置に来た時に、操作部１５Ｒと１５Ｌを操作し、当接面１４Ｒと１４Ｌの距離を小さくする。後述のように、付勢手段を用いれば、自動的にその距離は小さくなる。当接面１４Ｒと１４Ｌの距離が小さくなった結果、両方の挟持部材１１Ｒと１１Ｌの当接面１４Ｒと１４Ｌが、モータシャフト２１の凹部２２に両側から当接し、これにより、挟持部材１１Ｒと１１Ｌは、凹部２２に嵌り込み、挟持する。 FIG. 5 is a diagram in the case where the two clamping members 11 of the present embodiment are combined, and shows a state where the motor shaft 21 is passed through the opening 12 and the clamping member 11 clamps the motor shaft 21. In order to do this, when the both clamping members 11R and 11L are translated downward toward the motor shaft 21 from the state of FIG. 3 (b) and come to the position of the recess 22 of the front-view motor shaft 21, The operation portions 15R and 15L are operated to reduce the distance between the contact surfaces 14R and 14L. As will be described later, if the biasing means is used, the distance is automatically reduced. As a result of the decrease in the distance between the contact surfaces 14R and 14L, the contact surfaces 14R and 14L of both the clamping members 11R and 11L abut against the recess 22 of the motor shaft 21 from both sides, thereby holding the clamping members 11R and 11L. Is inserted into the recess 22 and sandwiched.

このように、２つの挟持部材１１を備え、各挟持部材１１Ｒと１１Ｌは、モータシャフト２１の横断面より大きい開口を有する開口部１２Ｒと１２Ｌと、他方の挟持部材（例えば、挟持部材１１Ｒにとっては、挟持部材１１Ｌ）の厚さに等しい高さを有し、前記開口部の一部に隣接して立ち上がる突起部１３Ｒと１３Ｌと、開口部１２Ｒと１２Ｌの側面の一部と突起部１３Ｒと１３Ｌの側面の一部から形成された、ファンの装着時にモータシャフト２１に当接する当接面１４Ｒと１４Ｌと、を有し、一方の挟持部材の突起部１３Ｒと１３Ｌを、他方の挟持部材の開口部１２Ｒと１２Ｌに、互いに嵌入させることにより、２つの挟持部材１１Ｒと１１Ｌが互いに摺接し、ファンの装着時に、一方の挟持部材１１Ｒの当接面１４Ｒと他方の挟持部材１１Ｌの当接面１４Ｌによりモータシャフト２１を狭持する着脱装置１０が構成される。 In this way, the two clamping members 11 are provided, and each clamping member 11R and 11L has openings 12R and 12L having an opening larger than the cross section of the motor shaft 21, and the other clamping member (for example, the clamping member 11R). , The protrusions 13R and 13L rising adjacent to a part of the opening, part of the side surfaces of the openings 12R and 12L, and the protrusions 13R and 13L. The contact surfaces 14R and 14L that contact the motor shaft 21 when the fan is mounted are formed from a part of the side surfaces of the first sandwiching member, and the protrusions 13R and 13L of one sandwiching member are opened to the opening of the other sandwiching member. The two holding members 11R and 11L are in sliding contact with each other by being fitted into the portions 12R and 12L, and when the fan is mounted, the contact surface 14R of the one holding member 11R and the other holding portion Attachment apparatus 10 for holding the motor shaft 21 is constituted by the contact surfaces 14L of 11L.

特に、挟持部材１１Ｌの底面の一部と、挟持部材１１Ｒの突起部１３Ｒの上面の一部が凹部２２に係合することにより、モータシャフト２１からのファンの脱落防止をより確実なものとする。また、挟持部材１１Ｒと１１Ｌが、モータシャフト２１を両側から同じ高さの位置で挟持することができ、また、挟持する部分が略Ｏ字状であることにより形状的に安定した形状となるので、重量バランスが良く、送風機を高速回転させても余計なブレや振動が発生せずに、静かな送風機とすることができると共に、モータシャフトやモータ軸受けへ余計な負荷が掛らないため、部品寿命を長くすることができる。また、着脱装置１０は、モータシャフト２１を中心として点対称のとなっているので、回転軸に対する重心位置のズレもなく、重量バランスに優れている。 In particular, a part of the bottom surface of the clamping member 11L and a part of the top surface of the protrusion 13R of the clamping member 11R are engaged with the recess 22, thereby preventing the fan from falling off the motor shaft 21 more reliably. . Further, the sandwiching members 11R and 11L can sandwich the motor shaft 21 at the same height from both sides, and the sandwiched portion is substantially O-shaped, so that the shape is stable. Because the weight balance is good, even if the blower is rotated at high speed, there is no excessive blurring or vibration, and the fan can be made quieter and no extra load is applied to the motor shaft or motor bearing. The lifetime can be extended. Moreover, since the attachment / detachment device 10 is point-symmetric about the motor shaft 21, there is no deviation of the center of gravity with respect to the rotation axis, and the weight balance is excellent.

図６は、本実施形態において、２つの挟持部材を組み合わせた場合の斜視図であり、モータシャフト２１を開口部１２に通し、挟持部材１１がモータシャフト２１を挟持した状態を示す。両方の当接面１４Ｒと１４Ｌは、凹部２２に当接し、挟持部材１１Ｒの突起部１３Ｒの上面が、凹部２２に噛み合っており、ファンがモータシャフト２１から脱落することを防止する。 FIG. 6 is a perspective view when two clamping members are combined in the present embodiment, and shows a state where the motor shaft 21 is passed through the opening 12 and the clamping member 11 clamps the motor shaft 21. Both the contact surfaces 14R and 14L are in contact with the recess 22, and the upper surface of the protrusion 13R of the holding member 11R is engaged with the recess 22 to prevent the fan from falling off the motor shaft 21.

＜第２実施形態＞
図７は、本実施形態における挟持部材１１Ａの(a)平面図、(b)斜視図である。第１実施形態との異なる点のみを述べる。本実施形態では、突起部１３Ａは、平面視でモータシャフト２１の側面に適合するように窪んでいる。より具体的には、開口部１２Ａの一部と突起部１３Ａの側面の一部から形成された当接面１４Ａは、モータシャフト２１の被挟持部の側面の曲率と同じ曲率を有するように形成されている。その結果、第１実施形態では、ほぼ線状の細長い部分が当接面１４となり、その当接面１４がモータシャフト２１を挟持していたが、本実施形態では、当接面１４Ａは、モータシャフト２１に当接する面積が大きくなり、確実にモータシャフト２１を挟持することができる。これ以外は、第１実施形態と同じである。 Second Embodiment
FIG. 7 is a (a) plan view and (b) perspective view of the holding member 11A in the present embodiment. Only differences from the first embodiment will be described. In the present embodiment, the protrusion 13A is recessed so as to fit the side surface of the motor shaft 21 in plan view. More specifically, the contact surface 14 A formed from a part of the opening 12 A and a part of the side surface of the protrusion 13 A is formed to have the same curvature as that of the side surface of the sandwiched part of the motor shaft 21. Has been. As a result, in the first embodiment, the substantially linear elongated portion becomes the contact surface 14, and the contact surface 14 sandwiches the motor shaft 21, but in this embodiment, the contact surface 14A The area in contact with the shaft 21 is increased, and the motor shaft 21 can be securely held. The rest is the same as in the first embodiment.

＜第３実施形態＞
図８は、第３実施形態における挟持部材１１Ｂの正面図である。第１実施形態との異なる点のみを述べる。第１実施形態では、２つの挟持部材１１は同一の一対の挟持部材を用いていたが、本実施形態では、同一でなくともよい。具体的には、一方の挟持部材１１ＢＬ（本図では左側の挟持部材）の突起部１３ＢＬの高さＨ_Lと、他方の挟持部材１１ＢＲ（本図では右側の挟持部材）の厚さＷ_Rとが等しく、かつ、一方の挟持部材１１ＢＬの厚さＷ_Lと、他方の挟持部材１１ＢＲの突起部１３ＢＲの高さＨ_Rが等しい限り、両挟持部材は異なっていてもよい。 <Third Embodiment>
FIG. 8 is a front view of the clamping member 11B in the third embodiment. Only differences from the first embodiment will be described. In the first embodiment, the two clamping members 11 use the same pair of clamping members. However, in the present embodiment, they may not be the same. Specifically, the height H _L of the protrusion 13BL of one pinching member 11BL (left clamping member in the figure), the thickness W _R of the other clamping member 11BR (right holding member in this view) equal, and the thickness W _L of one pinching member 11BL, unless equal height H _R of the protrusion 13BR of the other clamping member 11BR, both of the two sandwiching members may be different.

即ち、一方の挟持部材の突起部の高さが、他方の挟持部材の厚さに等しい限り、挟持部材は、両側から同じ高さの位置でモータシャフト２１を挟持することができ、その結果、重量バランスが良く、送風機を高速回転させても余計なブレや振動が発生せずに、静かな送風機とすることができると共に、モータシャフトやモータ軸受けへ余計な負荷が掛らないため、部品寿命を長くすることができる。 That is, as long as the height of the protrusion of one clamping member is equal to the thickness of the other clamping member, the clamping member can clamp the motor shaft 21 at the same height from both sides. The weight balance is good, and even if the fan is rotated at a high speed, there is no unnecessary blurring or vibration, and the fan can be made quieter and no extra load is applied to the motor shaft or motor bearing. Can be lengthened.

＜第４実施形態＞
図９は、本実施形態における、挟持部材１１Ｃを示す。挟持部材１１Ｃの外形は、後述のように、カバーの操作部用開口部から外に突出させ、人が着脱時に指で操作するための操作部１５Ｃが、平面視でその幅が小さくなっている以外は、上記実施形態とほぼ同じであり、平面視長方形をなしている。 <Fourth embodiment>
FIG. 9 shows a clamping member 11C in the present embodiment. As will be described later, the outer shape of the holding member 11C protrudes outward from the opening for the operation portion of the cover, and the operation portion 15C for a person to operate with a finger when attaching or detaching has a small width in a plan view. Except for this, it is almost the same as the above embodiment, and has a rectangular shape in plan view.

挟持部材１１Ｃは、開口部１２Ｃを備え、開口部１２Ｃの一辺は、突起部１３Ｃと共に、平面視でモータシャフトの側面の曲率と同じ曲率を有するように形成され、モータシャフトの側面に適合する。開口部１２Ｃの大きさは、モータシャフトの横断面よりも大きく、モータシャフトの先端部の横断面の円の直径より大きい辺を有し、平面視で縦の長さは、モータシャフトの直径よりわずかに大きい程度でよく、また、平面視で横の長さは、着脱時に挟持部材１１Ｃをスライドさせる際のスライド幅分大きくしておくとよい。 The clamping member 11C includes an opening 12C, and one side of the opening 12C is formed so as to have the same curvature as that of the side surface of the motor shaft in plan view together with the protrusion 13C, and fits the side surface of the motor shaft. The size of the opening 12C is larger than the cross section of the motor shaft, has a side larger than the diameter of the circle of the cross section of the tip of the motor shaft, and the vertical length in plan view is larger than the diameter of the motor shaft. It may be slightly larger, and the lateral length in plan view may be increased by the slide width when sliding the holding member 11C during attachment / detachment.

挟持部材１１Ｃでは、突起部１３Ｃは、開口部１２Ｃを挟み操作部１５Ｃと対向する位置に配置され、平面視で開口部１２Ｃがモータシャフトの側面に適合した形状と同じ形状に形成される。さらに、突起部１３Ｃは、上部が面取りしてあり、特に開口部１２Ｃ側においては、この面取り部は、モータシャフトの先端側の曲率と同じ曲率を有するように形成され、モータシャフトの凹部の先端側に適合する。 In the clamping member 11C, the protruding portion 13C is disposed at a position facing the operation portion 15C with the opening 12C interposed therebetween, and the opening 12C is formed in the same shape as the shape adapted to the side surface of the motor shaft in plan view. Furthermore, the upper portion of the protrusion 13C is chamfered, and particularly on the opening 12C side, the chamfered portion is formed to have the same curvature as the curvature on the tip side of the motor shaft, and the tip of the recess of the motor shaft. Fit side.

また、開口部１２Ｃは、底面視で、突起部１３Ｃと同じ大きさの面取りがなされ、この面取り部は、モータシャフトの根元側の曲率と同じ曲率を有するように形成され、モータシャフトの凹部の根元側に適合する。これにより、挟持部材１１Ｃが、両側から同じ高さの位置でモータシャフトを挟持することができ、さらに、当接面１４Ｃは、モータシャフトの側面だけでなく、モータシャフトの凹部の上下部分に当接することにより、さらに当接する面積が大きくなり、確実にモータシャフトを挟持することができる。 Further, the opening 12C is chamfered in the same size as the protrusion 13C in a bottom view, and the chamfered portion is formed to have the same curvature as the curvature on the base side of the motor shaft. Fits the root side. As a result, the clamping member 11C can clamp the motor shaft at the same height from both sides, and the contact surface 14C not only contacts the side surface of the motor shaft but also the upper and lower portions of the recess of the motor shaft. By contacting, the contact area further increases, and the motor shaft can be securely clamped.

突起部１３Ｃの平面視縦の長さは、開口部１２Ｃの平面視縦の長さと比べ小さいが、後述するように、本実施形態ではガイド部材を備えるので、ガタつくことはない。 The length of the projection 13C in the plan view is smaller than the length of the opening 12C in the plan view. However, as will be described later, the guide member is provided in this embodiment, so that the projection 13C is not rattled.

図１０は、本実施形態において、２つの挟持部材１１ＣＲと１１ＣＬが、凹部２２Ｃを備えるモータシャフト２１Ｃを、凹部２２Ｃで挟持した場合の断面図である。凹部２２Ｃは、モータシャフト２１Ｃの外周部において、円周状に窪んだ凹みを形成している。本実施形態における突起部１３ＣＲの一部と開口部１２ＣＲの一部から形成される当接部１４ＣＲと、突起部１３ＣＬの一部と開口部１２ＣＬの一部から形成される当接部１４ＣＬは、凹部２２Ｃの凹み形状に適合するような凸部として形成され、両側から、モータシャフト２１Ｃの凹部２２Ｃを挟持する。これにより、第２実施形態では当接面１４Ａは、モータシャフト２１の凹部の側面にのみに当接したが、本実施形態では、モータシャフト２１Ｃの凹部の上下の部分にも当接することとなり、さらに当接する面積が大きくなるので、より確実にモータシャフト２１Ｃを挟持することができる。 FIG. 10 is a cross-sectional view in the case where the two clamping members 11CR and 11CL sandwich the motor shaft 21C having the recess 22C with the recess 22C in the present embodiment. The recess 22C forms a recess recessed in a circumferential shape on the outer periphery of the motor shaft 21C. In this embodiment, a contact part 14CR formed from a part of the protrusion part 13CR and a part of the opening part 12CR, and a contact part 14CL formed from a part of the protrusion part 13CL and a part of the opening part 12CL, It is formed as a convex part that fits the concave shape of the concave part 22C, and sandwiches the concave part 22C of the motor shaft 21C from both sides. Thus, in the second embodiment, the contact surface 14A contacts only the side surface of the recess of the motor shaft 21, but in this embodiment, the contact surface 14A also contacts the upper and lower portions of the recess of the motor shaft 21C. Furthermore, since the contact area becomes large, the motor shaft 21C can be more reliably clamped.

図１１は、本実施形態の２つの挟持部材１１Ｃを組み合わせて、モータシャフト２１Ｃを両方の挟持部材１１Ｃの開口部１２Ｃに通し、その２つの挟持部材１１ＣＲと１１ＣＬが、凹部２２Ｃを備えるモータシャフト２１Ｃを、凹部２２Ｃで挟持したときの斜視図である。挟持部材１１ＣＲの突起部１３ＣＲは、挟持部材１１ＣＬの開口部１２ＣＬの中に入り、挟持部材１１ＣＬの突起部１３ＣＬは、挟持部材１１ＣＲの開口部１２ＣＲの中に入り、摺接面１６ＣＲと摺接面１６ＣＬとが互いに接している。 FIG. 11 shows a combination of the two clamping members 11C of the present embodiment and passes the motor shaft 21C through the openings 12C of both the clamping members 11C, and the two clamping members 11CR and 11CL are provided with a recess 22C. It is a perspective view when pinching | interposing in 22 C of recessed parts. The protrusion 13CR of the holding member 11CR enters the opening 12CL of the holding member 11CL, and the protrusion 13CL of the holding member 11CL enters the opening 12CR of the holding member 11CR, and the sliding contact surface 16CR and the sliding contact surface 16CL are in contact with each other.

当接面１４ＣＲと１４ＣＬとが、モータシャフト２１Ｃの凹部２２Ｃと、凹部２２Ｃの先端側のシャフトの下部と、凹部２２Ｃの根元側のシャフトの上部と（図示せず）に、両側から当接することにより、より当接面が大きくなっている。 The contact surfaces 14CR and 14CL are in contact with the concave portion 22C of the motor shaft 21C, the lower portion of the shaft on the distal end side of the concave portion 22C, and the upper portion of the shaft on the base side of the concave portion 22C (not shown) from both sides. As a result, the contact surface becomes larger.

図１２は、本実施形態におけるガイド部材４を示す。ガイド部材４は、２つの挟持部材１１Ｃの摺動を案内し、２つの挟持部材１１Ｃをカバーに取り付けるための部材である。ガイド部材４は、挟持部材保持部４２とガイド底部４３により、２つの挟持部材１１Ｃを挟みつつ、保持し、２つの挟持部材１１Ｃの摺動を円滑に行えるようにする。また、ガイド部材４は、カバー取付部４１を備え、これにより、後述のカバー５に取り付け、２つの挟持部材１１Ｃをカバー５に取り付ける。なお、モータシャフト用開口部４４を備え、この中をモータシャフト２１Ｃが貫通する。 FIG. 12 shows the guide member 4 in the present embodiment. The guide member 4 is a member for guiding the sliding of the two clamping members 11C and attaching the two clamping members 11C to the cover. The guide member 4 is held by the sandwiching member holding portion 42 and the guide bottom portion 43 while sandwiching the two sandwiching members 11C so that the two sandwiching members 11C can smoothly slide. In addition, the guide member 4 includes a cover attachment portion 41, whereby the guide member 4 is attached to a cover 5 described later, and the two clamping members 11 C are attached to the cover 5. A motor shaft opening 44 is provided, through which the motor shaft 21C penetrates.

図１３は、本実施形態において、ガイド部材４が２つの挟持部材１１Ｃを保持した場合の斜視図である。挟持部材保持部４２とガイド底部４３により、２つの挟持部材１１ＣＲと１１ＣＬを挟み、ガイドする。これにより、２つの挟持部材１１ＣＲと１１ＣＬの摺動がガタつくことはなくなる。２つの挟持部材１１ＣＲと１１ＣＬを保持した状態で、２つの挟持部材１１Ｃの開口部１２ＣＲと１２ＣＬを、モータシャフト２１Ｃの先端部が入る大きさに摺動させて、モータシャフト用開口部４４にモータシャフト２１Ｃの先端部を差し込み、凹部２２Ｃの所で、２つの挟持部材１１Ｃの開口部１２ＣＲと１２ＣＬを、当接面１４ＣＲと１４ＣＬが凹部２２Ｃに当接するまで摺動させて、モータシャフト２１Ｃを挟持する。なお、２つの挟持部材１１Ｃの開口部１２ＣＲと１２ＣＬを、当接面１４ＣＲと１４ＣＬが凹部２２Ｃに当接するまで摺動させるのは、後述の付勢手段により行うのが好ましい。 FIG. 13 is a perspective view when the guide member 4 holds two clamping members 11C in the present embodiment. The two clamping members 11CR and 11CL are sandwiched and guided by the clamping member holding portion 42 and the guide bottom portion 43. Thereby, the sliding of the two clamping members 11CR and 11CL will not be rattled. While holding the two clamping members 11CR and 11CL, the openings 12CR and 12CL of the two clamping members 11C are slid to a size that allows the front end of the motor shaft 21C to enter, and the motor shaft opening 44 is moved to the motor. Insert the tip of the shaft 21C, and slide the openings 12CR and 12CL of the two clamping members 11C until the contact surfaces 14CR and 14CL abut against the recess 22C at the recess 22C to clamp the motor shaft 21C. To do. It is preferable that the openings 12CR and 12CL of the two holding members 11C are slid until the contact surfaces 14CR and 14CL come into contact with the recess 22C by an urging means described later.

このように、２つの挟持部材１１Ｃを備え、各挟持部材１１ＣＲと１１ＣＬは、モータシャフト２１Ｃの横断面より大きい開口を有する開口部１２ＣＲと１２ＣＬと、他方の挟持部材（例えば、挟持部材１１ＣＲにとっては、挟持部材１１ＣＬ）の厚さに等しい高さを有する突起部１３ＣＲと１３ＣＬと、開口部１２ＣＲと１２ＣＬの側面の一部と突起部１３ＣＲと１３ＣＬの側面の一部から形成された、ファンの装着時にモータシャフト２１Ｃに当接する当接面１４ＣＲと１４ＣＬと、を有し、一方の挟持部材の突起部１３ＣＲと１３ＣＬを、他方の挟持部材の開口部１２ＣＲと１２ＣＬに、互いに嵌入させることにより、２つの挟持部材１１ＣＲと１１ＣＬが互いに摺接し、さらに、２つの挟持部材１１ＣＲと１１ＣＬの摺動を案内するガイド部材４と、ファンの装着時に、一方の挟持部材１１ＣＲの当接面１４ＣＲと他方の挟持部材１１ＣＬの当接面１４ＣＬによりモータシャフト２１Ｃを狭持させるための付勢手段６を備え、ファンの装着時に、一方の挟持部材１１ＣＲの当接面１４ＣＲと他方の挟持部材１１ＣＬの当接面１４ＣＬによりモータシャフト２１Ｃを狭持する着脱装置１０Ｃが構成される。 In this way, the two clamping members 11C are provided, and each clamping member 11CR and 11CL has an opening 12CR and 12CL having an opening larger than the cross section of the motor shaft 21C, and the other clamping member (for example, the clamping member 11CR). , Mounting of the fan formed from the protrusions 13CR and 13CL having a height equal to the thickness of the holding member 11CL), part of the side surfaces of the openings 12CR and 12CL, and part of the side surfaces of the protrusions 13CR and 13CL The contact surfaces 14CR and 14CL sometimes contact the motor shaft 21C, and the protrusions 13CR and 13CL of one holding member are inserted into the openings 12CR and 12CL of the other holding member to thereby The two clamping members 11CR and 11CL are in sliding contact with each other, and further guide the sliding of the two clamping members 11CR and 11CL. And a biasing means 6 for holding the motor shaft 21C by the contact surface 14CR of one clamping member 11CR and the contact surface 14CL of the other clamping member 11CL when the fan is mounted. An attachment / detachment device 10C that clamps the motor shaft 21C is configured by the contact surface 14CR of one clamping member 11CR and the contact surface 14CL of the other clamping member 11CL at the time of mounting.

図１４は、本実施形態におけるカバー５を示す。カバー５は、着脱装置１０を格納するためのものである。カバー５は、着脱装置１０を格納する格納部５１と、モータシャフト２１Ｃの先端部が突出するためのモータシャフト先端用開口部５２と、着脱装置１０の操作部が内部から突出するための操作部用開口部５３を２つ備える。着脱装置１０は、ガイド部４によりカバー５に取り付けられる。 FIG. 14 shows the cover 5 in the present embodiment. The cover 5 is for storing the detachable device 10. The cover 5 includes a storage unit 51 for storing the attaching / detaching device 10, a motor shaft tip opening 52 for projecting the tip of the motor shaft 21 C, and an operation unit for projecting the operation unit of the attaching / detaching device 10 from the inside. Two opening parts 53 are provided. The detachable device 10 is attached to the cover 5 by the guide portion 4.

図１５と図１６は、本実施形態において、カバー５を取り付けた場合の斜視図であり、図１５は、カバー５を透視的に描いたものである。格納部５１は、内部に着脱装置１０を保持したガイド部４を収め、ガイド部４とネジ止めなどにより取り付けられる。モータシャフト２１Ｃの先端部の一部が、モータシャフト先端用開口部５２から突出している。また、着脱装置１０の挟持部材１１ＣＲと１１ＣＬのそれぞれの操作部１５ＣＲと１５ＣＬが、操作部用開口部５３から突出している。 15 and 16 are perspective views when the cover 5 is attached in the present embodiment, and FIG. 15 is a perspective view of the cover 5. The storage unit 51 accommodates the guide unit 4 holding the attachment / detachment device 10 therein, and is attached to the guide unit 4 by screws or the like. A part of the tip of the motor shaft 21C protrudes from the motor shaft tip opening 52. Further, the operation portions 15CR and 15CL of the holding members 11CR and 11CL of the attachment / detachment device 10 protrude from the operation portion opening 53, respectively.

図１７は、本実施形態において、付勢手段６を取り付けた場合の様子を示す。本実施形態では、付勢手段６は、具体的にはトーションバースプリング６Ｃを使用している。付勢手段６は、ファンをモータシャフト２１Ｃに装着した場合に、着脱装置１０の一方の挟持部材１１ＣＲの当接面１４ＣＲと他方の挟持部材１１ＣＬの当接面１４ＣＬによりモータシャフト２１Ｃを狭持させておくための付勢力を与えるものである。図１７(a)に示すように、トーションバースプリング６Ｃのバーの部分が、挟持部材１１ＣＲの操作部１５ＣＲの開口部側の段差部分の面と、挟持部材１１ＣＬの、操作部１５ＣＬと開口部を挟み反対側の面であって操作部１５ＣＲと対向する面に掛かり、トーションバースプリング６Ｃは、これらを両側に押し広げる方向に付勢する。その結果、当接面１４ＣＲと１４ＣＬが近づく方へ付勢されるので、当接面１４ＣＲと１４ＣＬは、モータシャフト２１Ｃを挟持する。 FIG. 17 shows a state when the urging means 6 is attached in the present embodiment. In the present embodiment, the biasing means 6 specifically uses a torsion bar spring 6C. When the fan is mounted on the motor shaft 21C, the urging means 6 holds the motor shaft 21C between the contact surface 14CR of one clamping member 11CR of the attachment / detachment device 10 and the contact surface 14CL of the other clamping member 11CL. It gives an urging force to keep it. As shown in FIG. 17 (a), the bar portion of the torsion bar spring 6C has a stepped surface on the opening portion side of the operation portion 15CR of the holding member 11CR, and the operation portion 15CL and the opening portion of the holding member 11CL. The torsion bar spring 6C is urged in a direction to spread the two sides to the opposite sides of the surface opposite to the operation portion 15CR. As a result, the contact surfaces 14CR and 14CL are biased toward each other, so that the contact surfaces 14CR and 14CL sandwich the motor shaft 21C.

挟持部材１１Ｃは、トーションバースプリング６Ｃのバーの部分が当接する部分に、バーが嵌る位置、大きさに溝を設けておくことが好ましい。図１７(b)は、トーションバースプリング６Ｃを含めて、カバー５の中に収められ、着脱装置１０が、モータシャフト２１Ｃをトーションバースプリング６Ｃにより付勢し、挟持している様子を示す。 The clamping member 11C is preferably provided with a groove at a position and size where the bar fits in a portion where the bar portion of the torsion bar spring 6C contacts. FIG. 17B shows a state in which the torsion bar spring 6C and the like are housed in the cover 5 and the attachment / detachment device 10 urges and clamps the motor shaft 21C by the torsion bar spring 6C.

本実施形態では、付勢手段６は、トーションバースプリング６Ｃを用いたが、これに限定されない。例えば、挟持部材１１ＣＲの操作部１５ＣＲの開口部側の段差部分の面と、挟持部材１１ＣＬの操作部１５ＣＬと開口部を挟み反対側の面であって操作部１５ＣＲと対向する面との間に、コイルスプリングを圧縮状態で挟み込んでもよい。この場合、適宜コイルスプリングを設置するためのガイドを設けても良い。例えば、上記面の一方にコイルスプリングの中に入るような棒状の突起を設け、上記面の他方に上記突起のみが挿入される穴を設け、ファンを取り付けたり、外したりする際、操作部１５ＣＲと１５ＣＬとが両側から押し込まれると、コイルスプリングを圧縮し、突起が穴に挿入されることで、当接面同士が押し広げられ、また、操作部から押し込まれる力が無くなると、コイルスプリングの反発力で、当接面同士が近づき、モータシャフトを挟持する。これによれば、ネジ止め等に比し、着脱操作を容易化できる。 In the present embodiment, the urging means 6 uses the torsion bar spring 6C, but is not limited to this. For example, between the surface of the stepped portion on the opening side of the operation portion 15CR of the sandwiching member 11CR and the surface opposite to the operation portion 15CR that sandwiches the operation portion 15CL of the sandwiching member 11CL and faces the opening. The coil spring may be sandwiched in a compressed state. In this case, you may provide the guide for installing a coil spring suitably. For example, a rod-like protrusion that can be inserted into a coil spring is provided on one of the surfaces, and a hole into which only the protrusion is inserted is provided on the other surface. When 15CL and 15CL are pushed from both sides, the coil spring is compressed, and the protrusions are inserted into the holes, so that the contact surfaces are spread apart, and when there is no force pushed from the operation portion, the coil spring The contact surfaces approach each other due to the repulsive force, and the motor shaft is clamped. According to this, compared with screwing etc., attachment / detachment operation can be made easy.

図１８は、本実施形態のファンの着脱装置１０を適用した送風機１を示す。送風機１は、モータ２と、ファン３と、挟持部材１１Ｃ、ガイド部材４、カバー５、付勢手段６からなる着脱装置１０とを備える。ファン３は、モータ２のモータシャフト２１Ｃに、着脱装置１０により、着脱自在に取り付けることができ、着脱容易で、かつ、安定した挟持力を持った信頼性の高い着脱装置を備えた送風機を提供できる。 FIG. 18 shows the blower 1 to which the fan attaching / detaching device 10 of the present embodiment is applied. The blower 1 includes a motor 2, a fan 3, and an attachment / detachment device 10 including a clamping member 11 C, a guide member 4, a cover 5, and an urging means 6. The fan 3 can be detachably attached to the motor shaft 21C of the motor 2 by the attachment / detachment device 10, and is provided with a highly reliable attachment / detachment device that is easy to attach / detach and has a stable clamping force. it can.

１送風機
１０着脱装置
１１挟持部材
１２開口部
１３突起部
１４当接面
１５操作部
１６摺接面
２モータ
２１モータシャフト
２２凹部
３ファン
４ガイド部材
４１カバー取付部
４２挟持部材保持部
４３ガイド底部
４４モータシャフト用開口部
５カバー
５１格納部
５２モータシャフト先端用開口部
５３操作部用開口部
６付勢手段 DESCRIPTION OF SYMBOLS 1 Blower 10 Attachment / detachment apparatus 11 Holding member 12 Opening part 13 Projection part 14 Contact surface 15 Operation part 16 Sliding contact surface 2 Motor 21 Motor shaft 22 Recessed part 3 Fan 4 Guide member 41 Cover attachment part 42 Holding member holding part 43 Guide bottom part 44 Motor shaft opening 5 Cover 51 Storage portion 52 Motor shaft tip opening 53 Operation portion opening 6 Biasing means

Claims

A fan attachment / detachment device for a motor shaft, comprising two clamping members,
Each clamping member is
An opening having an opening larger than a cross-section of the motor shaft;
A protrusion that rises adjacent to a portion of the opening;
A recess formed from a part of the side surface of the opening and a part of the side surface of the protrusion so that the contact area that contacts the motor shaft when the fan is mounted is larger than the linear contact at two locations. A contact surface having
By fitting the protrusions of one clamping member into the openings of the other clamping member, the two clamping members are in sliding contact with each other,
When mounting the fan, the motor shaft is pinched by the contact surface of the one clamping member and the contact surface of the other clamping member.
A detachable device characterized by that.

The attachment / detachment device according to claim 1, wherein the contact surface has the same curvature as that of a portion of the motor shaft that contacts the contact surface.

The attachment / detachment device according to claim 1 or 2, wherein a thickness of each of the holding members is equal to a height of the protrusion.

In the outer peripheral portion of the motor shaft, when the portion with which the contact surface contacts forms a concave portion in a circumferential shape,
The attachment / detachment device according to claim 1, wherein the contact surface is a convex portion that fits into the concave portion.

Attachment apparatus according to any one of claims 1 to 4, characterized in that it comprises a guide member for guiding the sliding of the front SL two clamping members.

Fan during mounting, the claims, characterized in that it comprises biasing means for holding the motor shaft by the contact surface of the other clamping member and the abutment surface of the one clamping member The attachment / detachment device according to any one of 1 to 5.

A blower comprising a motor, a fan, and an attachment / detachment device detachably attaching the fan to a motor shaft of the motor, wherein the attachment / detachment device is the attachment / detachment device according to any one of claims 1 to 6. Blower featuring.