JP3840993B2 - Blower impeller boss structure and blower impeller - Google Patents

Blower impeller boss structure and blower impeller Download PDF

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JP3840993B2
JP3840993B2 JP2002074377A JP2002074377A JP3840993B2 JP 3840993 B2 JP3840993 B2 JP 3840993B2 JP 2002074377 A JP2002074377 A JP 2002074377A JP 2002074377 A JP2002074377 A JP 2002074377A JP 3840993 B2 JP3840993 B2 JP 3840993B2
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vibration
motor
boss structure
hub
step surface
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JP2003269382A (en
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匡史 東田
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Daikin Industries Ltd
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Daikin Industries Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は、送風機の羽根車に使用されるボス構造および送風機の羽根車、特に防振部材を備えるボス構造および羽根車に関する。
【0002】
【従来の技術】
送風機の羽根車のボス構造においては、外周部に送風機の羽根車のハブが弾性的に固定され、内周部に羽根車を回転駆動させるモーターのモーター軸が軸着される円筒形状のボス構造が知られている。かかる構造を有する従来例の径方向断面を図6に、ハブ9の近傍の拡大図を図7に示す。図6においては、送風機の羽根車のハブ9は、防振部材62を介してボス部材61と固着されている。ボス構造がこのような弾性的な構造を有することにより、モーターからの振動、特にモーターからの電磁振動を低減することができる。
【0003】
【発明が解決しようとする課題】
ところが、この従来のボス構造を有する羽根車においては、次の問題が発生している。羽根車の重心の偏りやモーター軸82の傾きを原因として、モーター軸82に直交する水平軸の周りにモーメント力が生じる場合、防振部材62はモーター軸方向へ変位し、さらには、防振部材62のモーター軸方向への塑性変形が生じる。この変位および塑性変形は、モーター軸82を含む平面における羽根車の振れを引き起こし、さらには送風機の揺れ及び騒音を引き起こす原因となる。
【0004】
そこで本発明においては、モーター軸を含む平面における羽根車の振れを抑制する送風機の羽根車のボス構造および送風機の羽根車を提供することを課題とする。
【0005】
【課題を解決するための手段】
請求項1に係るボス構造は、外周部に送風機の羽根車のハブが固定され、内周部に羽根車を回転駆動させるモーターのモーター軸が軸着されるボス構造である。このボス構造は、モーター軸の放射方向に延びる段差面を有するボス部材と、段差面に対してモーター軸方向に隣接するように成形され、ハブとボス部材との間に固着される防振部材とを備えている。さらに、このボス構造は、防振部材と隣接する段差面のモーター軸放射方向の長さが、段差面と隣接する防振部材の端面のモーター軸放射方向の長さの2分の1以上であることを特徴とするボス構造である。さらに、防振部材は、防振部材と隣接する段差面のモーター軸放射方向の長さあるいは段差面に隣接する防振部材の端面のモーター軸放射方向の長さのどちらか短い方の長さが、防振部材と隣接する段差面からハブまでのモーター軸方向の長さの3分の1以上となることを特徴とするボス構造である。ここで、羽根車のハブとは、羽根車と防振部材との間に介在する部品あるいは羽根車本体で防振部材が直接取り付けられる部位を意味する。ボス部材の材質としては、例えば金属材や樹脂材などがあげられる。また、防振部材の材質としては、例えばゴム材などの弾性材があげられる。
【0006】
ここでは、このボス構造を有することで、従来のボス構造と同様にモーターの電磁振動を低減する効果が得られる。さらに、防振部材と隣接する段差面のモーター軸放射方向の長さが、段差面と隣接する防振部材の端面のモーター軸放射方向の長さの2分の1以上であり、従来のボス構造に比して、段差面と隣接する防振部材の端面の面積に対する防振部材と隣接する段差面の面積の割合が増える。これにより、羽根車の重心の偏りやモーター軸の傾きを原因として、モーター軸に直交する水平軸の周りにモーメント力が生じる場合であっても、段差面により防振部材のモーター軸方向への変位は抑制され、さらには、塑性変形の発生を抑えることができる。その結果として、モーター軸を含む平面における羽根車の振れを抑制する効果を得ることができる。
【0007】
また、本発明に際しての研究により、防振部材と隣接する段差面からハブまでのモーター軸方向の長さに対して、段差面に隣接する防振部材のモーター軸の放射方向の長さと段差面に隣接する防振部材の端面のモーター軸放射方向の長さとのどちらか短い方の長さが長くなるほど、モーター軸方向への防振部材の変位が抑制されることができるとわかった。
【0008】
そこで、本発明に係るボス構造では、防振部材と隣接する段差面のモーター軸放射方向の長さあるいは段差面に隣接する防振部材の端面のモーター軸放射方向の長さのどちらか短い方の長さが、防振部材と隣接する段差面からハブまでのモーター軸方向の長さの3分の1以上となる構造を有し、従来のボス構造に比して、モーター軸方向への防振部材の変 位が抑制できる。さらにこれにより、防振部材の塑性変形の発生を抑えることができ、モーター軸を含む平面における羽根車の振れを抑制する効果を得ることができる。
【0009】
なお、防振部材と隣接する段差面は複数面あってもよく、複数のハブと固着される複数の防振部材を持つボス構造であってもよい。
【0010】
請求項2に係るボス構造は、請求項1に記載するボス構造であって、段差面は、防振部材に対してモーター本体側に配置される。
【0011】
ここでは、段差面は防振部材に対してモーター本体側に配置されている。このような構造を有することにより、羽根車の重心の偏りやモーター軸の傾きを原因として、モーター軸に直交する水平軸の周りにモーメント力が生じる場合であっても、防振部材のモーター本体方向への変位は段差面にて抑制される。この変位の抑制により、防振部材の塑性変形の発生を抑えることができる。さらには、モーター軸を含む平面における羽根車の振れを抑制する効果を得ることができる。
【0012】
請求項3に係るボス構造は、請求項1に記載するボス構造であって、段差面は、防振部材に対してモーター本体と反対側に配置される。
【0013】
ここでは、段差面は防振部材に対してモーター本体と反対側に配置されている。このような構造を有することにより、羽根車の重心の偏りやモーター軸の傾きを原因として、モーター軸に直交する水平軸の周りにモーメント力が生じる場合であっても、防振部材のモーター本体と反対方向への変位は段差面にて抑制される。この変位の抑制により、防振部材の塑性変形の発生を抑えることができる。さらには、モーター軸を含む平面における羽根車の振れを抑制する効果を得ることができる。
【0014】
請求項に係る送風機の羽根車は、請求項1からのいずれかに記載のボス構造とボス構造に固着されるハブとハブに固着される羽根とを備える送風機の羽根車である。ここで、ハブと羽根とが固着されている状態とは、例えば、ハブが羽根を供える羽根車に埋め込まれた状態で一体成形されていることや、ハブが羽根と一様な材質で一体となって作られていることなどをいう。また、送風機の羽根車とは、例えば、シロッコファン等の多翼ファンやターボファンやプロペラファンなどである。
【0015】
ここでは、送風機の羽根車が本発明のボス構造を有することで、羽根車の重心の偏りやモーター軸の傾きがある場合においても、モーター軸を含む平面における羽根車の振れを抑制する効果を得ることができる。そのため、羽根車の振れを原因とする送風機の揺れおよび騒音を抑制することができる。
【0016】
請求項に係る送風機の羽根車は、請求項1からのいずれかに記載のボス構造とボス構造に固着されるハブとハブに固着される羽根とを備えるシロッコファンである。ここで、ハブと羽根とが固着されている状態とは、例えば、ハブが羽根を供えるシロッコファンに埋め込まれた状態で一体成形されていることや、ハブが羽根と一様な材質で一体となって作られていることなどをいう。
【0017】
シロッコファンは、様々な向きに設置・使用され、そのファンの重心がファン回転中常時ハブ中心にあるように設計することは難しい。そこでシロッコファンが本発明のボス構造を有することで、シロッコファンに重心の偏りやモーター軸の傾きがある場合においても、モーター軸を含む平面におけるシロッコファンの振れを抑制する効果を得ることができる。そのため、シロッコファンの振れを原因とする送風機の揺れおよび騒音を抑制することができる。
【0018】
【発明の実施の形態】
〈第一実施形態〉
本発明の第一実施形態に係るボス構造1を図1に示す。また、ハブ9の近傍の拡大図を図2に示す。このボス構造1は図5に示すように、シロッコファン5のハブ9に備えつけられている。このボス構造1は、ボス部材11と防振部材12とを備える。ボス部材11は、金属材などで構成され、シロッコファン5を回転駆動させるモーター81のモーター軸82が軸着される内周部とモーター軸82の放射方向に延びる段差面13を有する外周部とを備える。防振部材12は、ゴム材などの弾性材で構成され、シロッコファン5のハブ9とボス部材11との間の空間に充填成形され、ハブ9とボス部材11を弾性的に固定する。防振部材12は、ボス部材11にあっては、ボス部材11の外周部と防振部材12に対してモーター本体側に配置される段差面13とにおいて固着される。このとき、防振部材12は、防振部材12の段差面13と隣接する端面のモーター軸放射方向の長さL2が、防振部材12と隣接する段差面13のモーター軸放射方向の長さL1と同じになるように成形される。
【0019】
〈第一実施形態に係るボス構造の作用および効果〉
シロッコファン5において、シロッコファン5の重心の偏りやモーター軸82の傾きを原因として、モーター軸82に直交する水平軸の周りにモーメント力が生じる場合、本発明のボス構造1を備えるシロッコファン5においては、防振部材12のモーター本体方向への変位は、段差面13にて抑制される。さらに、モーター本体と反対方向への変位も、防振部材12が段差面13にて固着されているために抑制される結果となる。これらにより、防振部材12の塑性変形の発生を抑えることができ、ひいてはモーター軸82を含む平面におけるシロッコファン5の振れを抑制する効果を得ることができる。
【0020】
さらに、図1に示す本発明のボス構造1においては、防振部材12と隣接する段差面13からハブ9までのモーター軸方向の長さL3に対する防振部材12と隣接する段差面13のモーター軸放射方向の長さL1あるいは段差面13に隣接する防振部材12の端面のモーター軸放射方向の長さL2の長さの割合が、図7に示す従来のボス構造6における防振部材62と隣接する段差面63からハブ9までのモーター軸方向の長さL9に対する防振部材62と隣接する段差面63のモーター軸放射方向の長さL7の割合よりも大きくなるような構造を有する。この構造を有することで、さらに防振部材12のモーター軸方向への変位の抑制効果は高まり、モーター軸82を含む平面における羽根車5の振れを抑制する効果を得ることができる。
【0021】
〈第二実施形態〉
本発明の第二実施形態に係るボス構造を図3に示す。このボス構造3は、シロッコファン5のハブ9に備えつけられている。このボス構造3は、ボス部材31と防振部材32とを備える。ボス部材31は、金属材などで構成され、羽根車を回転駆動させるモーター81のモーター軸82が軸着される内周部とモーター軸82の放射方向に延びる段差面33を有する外周部とを備える。防振部材32は、ゴム材などの弾性材で構成され、シロッコファン5のハブ9とボス部材31との間の空間に充填成形され、ハブ9とボス部材31を弾性的に固定する。防振部材32は、ボス部材31にあっては、ボス部材31の外周部と防振部材32に対してモーター本体と反対側に配置される段差面33とにおいて固着される。このとき、防振部材32は、段差面33と隣接する防振部材32の端面のモーター軸放射方向の長さL5が、防振部材32と隣接する段差面33のモーター軸放射方向の長さL4と同じになるように成形される。
【0022】
〈第二実施形態に係るボス構造の作用および効果〉
シロッコファン5において、シロッコファン5の重心の偏りやモーター軸82の傾きを原因として、モーター軸82に直交する水平軸の周りにモーメント力が生じる場合、図3に示すボス構造3を備えるシロッコファン5においては、防振部材32のモーター本体と反対方向への変位は、段差面33にて抑制される。さらに、モーター本体方向への変位も、防振部材32が段差面33にて固着されているために抑制される結果となる。これらにより、防振部材32の塑性変形の発生を抑えることができ、ひいてはモーター軸82を含む平面におけるシロッコファン5の振れを抑制する効果を得ることができる。
【0023】
〈その他の実施形態〉
第一実施形態および第二実施形態においては、本発明のボス構造をシロッコファンに適用したが、本発明のボス構造は、ラジアルファン、ターボファン、プロペラファンなど各種送風機の羽根車に対して適用可能である。
【0024】
【発明の効果】
請求項1に係るボス構造では、従来のボス構造と同様にモーターの電磁振動を低減する効果が得られる。さらに、防振部材と隣接する段差面のモーター軸放射方向の長さが、段差面と隣接する防振部材の端面のモーター軸放射方向の長さの2分の1以上であり、従来のボス構造に比して、段差面と隣接する防振部材の端面の面積に対する防振部材と隣接する段差面の面積の割合が増える。これにより、羽根車の重心の偏りやモーター軸の傾きを原因として、モーター軸に直交する水平軸の周りにモーメント力が生じる場合であっても、段差面により防振部材のモーター軸方向への変位は抑制され、さらには、塑性変形の発生を抑えることができる。その結果として、モーター軸を含む平面における羽根車の振れを抑制する効果を得ることができる。さらに、このボス構造では、防振部材と隣接する段差面のモーター軸放射方向の長さあるいは段差面に隣接する防振部材の端面のモーター軸放射方向の長さのどちらか短い方の長さが、防振部材と隣接する段差面からハブまでのモーター軸方向の長さの3分の1以上となる構造を有し、従来のボス構造に比して、モーター軸方向への防振部材の変位が抑制できる。さらにこれにより、防振部材の塑性変形の発生を抑えることができ、モーター軸を含む平面における羽根車の振れを抑制する効果を得ることができる。
【0025】
請求項2に係るボス構造では、段差面は防振部材に対してモーター本体側に配置されている。このような構造を有することにより、羽根車の重心の偏りやモーター軸の傾きを原因として、モーター軸に直交する水平軸の周りにモーメント力が生じる場合であっても、防振部材のモーター本体方向への変位は段差面にて抑制される。この変位の抑制により、防振部材の塑性変形の発生を抑えることができる。さらには、モーター軸を含む平面における羽根車の振れを抑制する効果を得ることができる。
【0026】
請求項3に係るボス構造では、段差面は防振部材に対してモーター本体と反対側に配置されている。このような構造を有することにより、羽根車の重心の偏りやモーター軸の傾きを原因として、モーター軸に直交する水平軸の周りにモーメント力が生じる場合であっても、防振部材のモーター本体と反対方向への変位は段差面にて抑制される。この変位の抑制により、防振部材の塑性変形の発生を抑えることができる。さらには、モーター軸を含む平面における羽根車の振れを抑制する効果を得ることができる。
【0027】
請求項に係る送風機の羽根車は、本発明のボス構造を有することで、羽根車の重心の偏りやモーター軸の傾きがある場合においても、モーター軸を含む平面における羽根車の振れを抑制する効果を得ることができる。そのため、羽根車の振れを原因とする送風機の揺れおよび騒音を抑制することができる。
【0028】
請求項に係るシロッコファンは、本発明のボス構造を有することで、シロッコファンに重心の偏りやモーター軸の傾きがある場合においても、モーター軸を含む平面におけるシロッコファンの振れを抑制する効果を得ることができる。そのため、シロッコファンの振れを原因とする送風機の揺れおよび騒音を抑制することができる。
【図面の簡単な説明】
【図1】 本発明の第一実施形態に係るボス構造の径方向断面図。
【図2】 図1に示すボス構造のハブ近傍拡大図。
【図3】 本発明の第二実施形態にかかるボス構造の径方向断面図。
【図4】 図3に示すボス構造のハブ近傍拡大図。
【図5】 本発明のボス構造を備える送風機の羽根車。
【図6】 従来のボス構造の径方向断面。
【図7】 図6に示す従来のボス構造のハブ近傍拡大図。
【符号の説明】
1 ボス構造
3 ボス構造
5 シロッコファン
9 ハブ
11 ボス部材
12 防振部材
13 段差面
31 ボス部材
32 防振部材
33 段差面
51 羽根
81 モーター
82 モーター軸
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a boss structure used for an impeller of a blower and an impeller of the blower, and more particularly to a boss structure and an impeller provided with a vibration isolation member.
[0002]
[Prior art]
In the boss structure of the impeller of the blower, a cylindrical boss structure in which the hub of the impeller of the blower is elastically fixed to the outer peripheral portion and the motor shaft of the motor that rotationally drives the impeller is axially attached to the inner peripheral portion. It has been known. A radial cross section of a conventional example having such a structure is shown in FIG. 6, and an enlarged view of the vicinity of the hub 9 is shown in FIG. In FIG. 6, the hub 9 of the blower impeller is fixed to the boss member 61 via a vibration isolation member 62. Since the boss structure has such an elastic structure, vibrations from the motor, particularly electromagnetic vibrations from the motor can be reduced.
[0003]
[Problems to be solved by the invention]
However, in the impeller having this conventional boss structure, the following problem occurs. When a moment force is generated around the horizontal axis orthogonal to the motor shaft 82 due to the deviation of the center of gravity of the impeller or the inclination of the motor shaft 82, the vibration isolation member 62 is displaced in the motor axis direction, and further, the vibration isolation Plastic deformation of the member 62 in the motor axial direction occurs. This displacement and plastic deformation cause the vibration of the impeller in the plane including the motor shaft 82, and further causes the vibration and noise of the blower.
[0004]
Accordingly, an object of the present invention is to provide a boss structure of an impeller of a blower and an impeller of the blower that suppress the vibration of the impeller in a plane including the motor shaft.
[0005]
[Means for Solving the Problems]
The boss structure according to claim 1 is a boss structure in which a hub of an impeller of a blower is fixed to an outer peripheral portion, and a motor shaft of a motor that rotationally drives the impeller is axially attached to an inner peripheral portion. This boss structure is a boss member having a step surface extending in the radial direction of the motor shaft, and a vibration isolating member which is molded so as to be adjacent to the step surface in the motor axis direction and is fixed between the hub and the boss member. And. Further, in this boss structure, the length of the step surface adjacent to the vibration isolating member in the motor axis radial direction is more than half of the length of the end surface of the vibration isolating member adjacent to the step surface in the motor axis radial direction. It is a boss structure characterized by being. Furthermore, the vibration isolating member has the shorter length of the step surface adjacent to the vibration isolating member in the radial direction of the motor axis or the length of the end surface of the vibration isolating member adjacent to the step isolating surface, whichever is shorter. Is a boss structure characterized in that it is one third or more of the length in the motor axial direction from the step surface adjacent to the vibration isolator member to the hub. Here, the hub of the impeller means a part that is interposed between the impeller and the vibration isolating member or a portion where the vibration isolating member is directly attached to the impeller body. Examples of the material of the boss member include a metal material and a resin material. Further, examples of the material of the vibration isolating member include elastic materials such as rubber materials.
[0006]
Here, by having this boss structure, an effect of reducing the electromagnetic vibration of the motor can be obtained as in the conventional boss structure. Furthermore, the length of the stepped surface adjacent to the vibration isolating member in the radial direction of the motor axis is more than half of the length of the end surface of the vibration isolating member adjacent to the stepped surface in the radial direction of the motor axis. Compared to the structure, the ratio of the area of the step surface adjacent to the vibration isolating member to the area of the end surface of the vibration isolating member adjacent to the step surface increases. As a result, even if a moment force is generated around the horizontal axis perpendicular to the motor axis due to the deviation of the center of gravity of the impeller or the inclination of the motor shaft, the stepping surface causes the vibration isolating member to move in the motor axis direction. The displacement is suppressed, and furthermore, the occurrence of plastic deformation can be suppressed. As a result, an effect of suppressing the vibration of the impeller in the plane including the motor shaft can be obtained.
[0007]
In addition, as a result of research on the present invention, the length in the radial direction of the motor shaft of the vibration isolating member adjacent to the step surface and the step surface with respect to the length in the motor axial direction from the step surface adjacent to the vibration isolating member to the hub It was found that the displacement of the anti-vibration member in the motor axis direction can be suppressed as the length of the end surface of the anti-vibration member adjacent to the motor shaft radial direction becomes shorter.
[0008]
Therefore, in the boss structure according to the present invention, the shorter length of the stepped surface adjacent to the vibration isolating member in the motor axis radial direction or the length of the end surface of the vibration isolating member adjacent to the stepped surface is shorter. Has a structure that is at least one third of the length in the motor axial direction from the step surface adjacent to the vibration isolator member to the hub, and in the motor axial direction as compared with the conventional boss structure. strange position of the anti-vibration member can be suppressed. Further, this can suppress the occurrence of plastic deformation of the vibration isolation member, and can obtain the effect of suppressing the vibration of the impeller in the plane including the motor shaft.
[0009]
The step surface adjacent to the vibration isolation member may be a plurality of surfaces, or may be a boss structure having a plurality of vibration isolation members fixed to a plurality of hubs.
[0010]
A boss structure according to a second aspect is the boss structure according to the first aspect, wherein the stepped surface is disposed on the motor body side with respect to the vibration isolating member.
[0011]
Here, the step surface is arranged on the motor body side with respect to the vibration isolating member. By having such a structure, even if a moment force is generated around the horizontal axis perpendicular to the motor axis due to the deviation of the center of gravity of the impeller or the inclination of the motor shaft, the motor body of the vibration isolating member The displacement in the direction is suppressed at the step surface. By suppressing this displacement, it is possible to suppress the occurrence of plastic deformation of the vibration isolation member. Furthermore, the effect which suppresses the shake of the impeller in the plane containing a motor shaft can be acquired.
[0012]
A boss structure according to a third aspect is the boss structure according to the first aspect, wherein the step surface is disposed on the opposite side to the motor body with respect to the vibration isolating member.
[0013]
Here, the step surface is disposed on the side opposite to the motor body with respect to the vibration isolating member. By having such a structure, even if a moment force is generated around the horizontal axis perpendicular to the motor axis due to the deviation of the center of gravity of the impeller or the inclination of the motor shaft, the motor body of the vibration isolating member Displacement in the opposite direction is suppressed at the step surface. By suppressing this displacement, it is possible to suppress the occurrence of plastic deformation of the vibration isolation member. Furthermore, the effect which suppresses the shake of the impeller in the plane containing a motor shaft can be acquired.
[0014]
An impeller of a blower according to a fourth aspect is an impeller of a blower including the boss structure according to any one of the first to third aspects, a hub fixed to the boss structure, and a blade fixed to the hub. Here, the state in which the hub and the blade are fixed is, for example, that the hub is integrally formed in a state where the hub is embedded in an impeller that provides the blade, or that the hub and the blade are made of a uniform material. It means that it is made. The impeller of the blower is, for example, a multiblade fan such as a sirocco fan, a turbo fan, a propeller fan, or the like.
[0015]
Here, since the impeller of the blower has the boss structure of the present invention, even if there is a deviation in the center of gravity of the impeller or the inclination of the motor shaft, the effect of suppressing the shake of the impeller in the plane including the motor shaft is obtained. Obtainable. Therefore, it is possible to suppress the vibration and noise of the blower caused by the vibration of the impeller.
[0016]
An impeller of a blower according to a fifth aspect is a sirocco fan including the boss structure according to any one of the first to third aspects, a hub fixed to the boss structure, and a blade fixed to the hub. Here, the state in which the hub and the blade are fixed is, for example, that the hub is integrally formed in a state where the hub is embedded in a sirocco fan that provides the blade, or that the hub is integrally formed of a uniform material with the blade. It means that it is made.
[0017]
Sirocco fans are installed and used in various orientations, and it is difficult to design the fan so that its center of gravity is always at the center of the hub during fan rotation. Therefore, when the sirocco fan has the boss structure of the present invention, even when the sirocco fan has a bias in the center of gravity or the inclination of the motor shaft, it is possible to obtain an effect of suppressing the sirocco fan from swinging in a plane including the motor shaft. . Therefore, it is possible to suppress the vibration and noise of the blower caused by the vibration of the sirocco fan.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
<First embodiment>
A boss structure 1 according to a first embodiment of the present invention is shown in FIG. An enlarged view of the vicinity of the hub 9 is shown in FIG. The boss structure 1 is provided on a hub 9 of a sirocco fan 5 as shown in FIG. The boss structure 1 includes a boss member 11 and a vibration isolation member 12. The boss member 11 is made of a metal material or the like, and has an inner peripheral portion on which a motor shaft 82 of a motor 81 for rotationally driving the sirocco fan 5 is attached, and an outer peripheral portion having a step surface 13 extending in the radial direction of the motor shaft 82. Is provided. The vibration isolation member 12 is made of an elastic material such as a rubber material, and is filled in a space between the hub 9 and the boss member 11 of the sirocco fan 5 to elastically fix the hub 9 and the boss member 11. In the boss member 11, the vibration isolation member 12 is fixed to the outer peripheral portion of the boss member 11 and the step surface 13 disposed on the motor main body side with respect to the vibration isolation member 12. At this time, in the vibration isolator 12, the length L2 of the end surface adjacent to the step surface 13 of the anti-vibration member 12 in the motor axis radial direction is the length of the step surface 13 adjacent to the anti-vibration member 12 in the motor axis radial direction. Molded to be the same as L1.
[0019]
<Operation and effect of the boss structure according to the first embodiment>
In the sirocco fan 5, when moment force is generated around the horizontal axis orthogonal to the motor shaft 82 due to the deviation of the center of gravity of the sirocco fan 5 or the inclination of the motor shaft 82, the sirocco fan 5 having the boss structure 1 of the present invention is provided. , The displacement of the vibration isolating member 12 in the direction of the motor body is suppressed by the step surface 13. Further, the displacement in the direction opposite to the motor body is also suppressed because the vibration isolation member 12 is fixed on the step surface 13. Thus, the occurrence of plastic deformation of the vibration isolation member 12 can be suppressed, and as a result, the effect of suppressing the vibration of the sirocco fan 5 in the plane including the motor shaft 82 can be obtained.
[0020]
Further, in the boss structure 1 of the present invention shown in FIG. 1, the motor of the step surface 13 adjacent to the vibration isolation member 12 with respect to the length L3 in the motor axial direction from the step surface 13 adjacent to the vibration isolation member 12 to the hub 9. The ratio of the length L1 in the axial direction of the motor or the length L2 in the radial direction of the motor shaft at the end face of the vibration isolation member 12 adjacent to the step surface 13 is the vibration isolation member 62 in the conventional boss structure 6 shown in FIG. The vibration isolating member 62 and the length L7 of the stepped surface 63 adjacent to the stepped surface 63 adjacent to the motor shaft radial length L9 from the stepped surface 63 adjacent to the hub 9 are larger. By having this structure, the effect of suppressing the displacement of the vibration isolation member 12 in the motor axial direction is further enhanced, and the effect of suppressing the vibration of the impeller 5 in the plane including the motor shaft 82 can be obtained.
[0021]
<Second embodiment>
A boss structure according to a second embodiment of the present invention is shown in FIG. The boss structure 3 is provided on the hub 9 of the sirocco fan 5. The boss structure 3 includes a boss member 31 and a vibration isolation member 32. The boss member 31 is made of a metal material or the like, and includes an inner peripheral portion on which a motor shaft 82 of a motor 81 that rotationally drives an impeller is attached and an outer peripheral portion having a step surface 33 extending in the radial direction of the motor shaft 82. Prepare. The anti-vibration member 32 is made of an elastic material such as a rubber material, and is filled in a space between the hub 9 and the boss member 31 of the sirocco fan 5 to elastically fix the hub 9 and the boss member 31. In the boss member 31, the vibration isolation member 32 is fixed to the outer peripheral portion of the boss member 31 and the step surface 33 disposed on the opposite side of the motor body with respect to the vibration isolation member 32. At this time, in the vibration isolating member 32, the length L5 of the end surface of the vibration isolating member 32 adjacent to the stepped surface 33 in the motor axis radial direction is the length of the stepped surface 33 adjacent to the vibration isolating member 32 in the motor axis radial direction. Molded to be the same as L4.
[0022]
<Operation and effect of the boss structure according to the second embodiment>
In the sirocco fan 5, when a moment force is generated around the horizontal axis orthogonal to the motor shaft 82 due to the deviation of the center of gravity of the sirocco fan 5 or the inclination of the motor shaft 82, the sirocco fan having the boss structure 3 shown in FIG. 5, the displacement of the vibration isolating member 32 in the direction opposite to the motor main body is suppressed by the step surface 33. Further, the displacement in the motor body direction is also suppressed because the vibration isolating member 32 is fixed on the step surface 33. Thus, the occurrence of plastic deformation of the vibration isolating member 32 can be suppressed, and as a result, the effect of suppressing the vibration of the sirocco fan 5 in the plane including the motor shaft 82 can be obtained.
[0023]
<Other embodiments>
In the first embodiment and the second embodiment, the boss structure of the present invention is applied to a sirocco fan. However, the boss structure of the present invention is applied to an impeller of various blowers such as a radial fan, a turbo fan, and a propeller fan. Is possible.
[0024]
【The invention's effect】
In the boss structure according to the first aspect, the effect of reducing the electromagnetic vibration of the motor can be obtained as in the conventional boss structure. Furthermore, the length of the stepped surface adjacent to the vibration isolating member in the radial direction of the motor axis is more than half of the length of the end surface of the vibration isolating member adjacent to the stepped surface in the radial direction of the motor axis. Compared to the structure, the ratio of the area of the step surface adjacent to the vibration isolating member to the area of the end surface of the vibration isolating member adjacent to the step surface increases. As a result, even if a moment force is generated around the horizontal axis perpendicular to the motor axis due to the deviation of the center of gravity of the impeller or the inclination of the motor shaft, the stepping surface causes the vibration isolating member to move in the motor axis direction. The displacement is suppressed, and furthermore, the occurrence of plastic deformation can be suppressed. As a result, an effect of suppressing the vibration of the impeller in the plane including the motor shaft can be obtained. Furthermore, in this boss structure, the length of the stepped surface adjacent to the vibration isolating member in the radial direction of the motor axis or the length of the end surface of the vibration isolating member adjacent to the stepped surface is the shorter of the length in the motor shaft radial direction. Has a structure that is at least one-third of the length in the motor axial direction from the step surface adjacent to the vibration isolating member to the hub, and the vibration isolating member in the motor axial direction as compared with the conventional boss structure Can be suppressed. Further, this can suppress the occurrence of plastic deformation of the vibration isolation member, and can obtain the effect of suppressing the vibration of the impeller in the plane including the motor shaft.
[0025]
In the boss structure according to the second aspect, the step surface is disposed on the motor body side with respect to the vibration isolating member. By having such a structure, even if a moment force is generated around the horizontal axis perpendicular to the motor axis due to the deviation of the center of gravity of the impeller or the inclination of the motor shaft, the motor body of the vibration isolating member The displacement in the direction is suppressed at the step surface. By suppressing this displacement, it is possible to suppress the occurrence of plastic deformation of the vibration isolation member. Furthermore, the effect which suppresses the shake of the impeller in the plane containing a motor shaft can be acquired.
[0026]
In the boss structure according to the third aspect, the step surface is disposed on the side opposite to the motor body with respect to the vibration isolating member. By having such a structure, even if a moment force is generated around the horizontal axis perpendicular to the motor axis due to the deviation of the center of gravity of the impeller or the inclination of the motor shaft, the motor body of the vibration isolating member Displacement in the opposite direction is suppressed at the step surface. By suppressing this displacement, it is possible to suppress the occurrence of plastic deformation of the vibration isolation member. Furthermore, the effect which suppresses the shake of the impeller in the plane containing a motor shaft can be acquired.
[0027]
The impeller of the blower according to claim 4 has the boss structure of the present invention, so that even when the impeller is biased in the center of gravity or the motor shaft is inclined, the impeller shake in a plane including the motor shaft is suppressed. Effect can be obtained. Therefore, it is possible to suppress the vibration and noise of the blower caused by the vibration of the impeller.
[0028]
The sirocco fan which concerns on Claim 5 has the boss | hub structure of this invention, Even when there exists a bias | inclination of a gravity center or inclination of a motor shaft in a sirocco fan, the effect which suppresses the vibration of the sirocco fan in the plane containing a motor shaft Can be obtained. Therefore, it is possible to suppress the vibration and noise of the blower caused by the vibration of the sirocco fan.
[Brief description of the drawings]
FIG. 1 is a radial cross-sectional view of a boss structure according to a first embodiment of the present invention.
FIG. 2 is an enlarged view of the vicinity of the hub of the boss structure shown in FIG.
FIG. 3 is a radial sectional view of a boss structure according to a second embodiment of the present invention.
4 is an enlarged view of the vicinity of the hub of the boss structure shown in FIG. 3;
FIG. 5 is an impeller of a blower provided with the boss structure of the present invention.
FIG. 6 is a radial section of a conventional boss structure.
7 is an enlarged view of the vicinity of a hub of the conventional boss structure shown in FIG. 6. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Boss structure 3 Boss structure 5 Sirocco fan 9 Hub 11 Boss member 12 Anti-vibration member 13 Step surface 31 Boss member 32 Anti-vibration member 33 Step surface 51 Blade 81 Motor 82 Motor shaft

Claims (5)

外周部に送風機の羽根車(5)のハブ(9)が固定され、内周部に前記羽根車(5)を回転駆動させるモーター(81)のモーター軸(82)が軸着されるボス構造であって、
モーター軸(82)の放射方向に延びる段差面(13,33)を有するボス部材(11,31)と、
前記段差面(13,33)に対してモーター軸方向に隣接するように成形され、前記ハブ(9)と前記ボス部材(11,31)との間に固着される防振部材(12,32)と、
を備え、
前記防振部材(12,32)と隣接する前記段差面(13,33)のモーター軸放射方向の長さ(L1,L4)は、前記防振部材(12,32)の前記段差面(13,33)と隣接する端面のモーター軸放射方向の長さ(L2,L5)の2分の1以上であ
前記防振部材(12,32)は、前記防振部材(12,32)と隣接する前記段差面(13,33)のモーター軸放射方向の長さ(L1,L4)あるいは前記防振部材(12,32)の前記段差面(13,33)に隣接する端面のモーター軸放射方向の長さ(L2,L5)のどちらか短い方の長さが、前記防振部材(12,32)と隣接する前記段差面(13,33)からハブ(9)までのモーター軸方向の長さ(L3,L6)の3分の1以上となる構造を有する、
ボス構造(1,3)。
A boss structure in which a hub (9) of an impeller (5) of a blower is fixed to an outer peripheral portion, and a motor shaft (82) of a motor (81) that rotationally drives the impeller (5) is axially attached to an inner peripheral portion. Because
A boss member (11, 31) having a step surface (13, 33) extending in the radial direction of the motor shaft (82);
Anti-vibration members (12, 32) formed so as to be adjacent to the step surface (13, 33) in the motor axial direction and fixed between the hub (9) and the boss members (11, 31). )When,
With
The length (L1, L4) in the motor shaft radial direction of the step surface (13, 33) adjacent to the vibration isolation member (12, 32) is the step surface (13) of the vibration isolation member (12, 32). , 33) and Ri der 1/2 or more of the motor shaft radial length of the end surface adjacent (L2, L5),
The anti-vibration member (12, 32) is a length (L1, L4) in the motor shaft radial direction of the step surface (13, 33) adjacent to the anti-vibration member (12, 32) or the anti-vibration member ( 12, 32) the length (L2, L5) in the motor shaft radial direction of the end surface adjacent to the step surface (13, 33), whichever is shorter, is the same as that of the vibration isolating member (12, 32). Having a structure that is one third or more of the length (L3, L6) in the motor axial direction from the adjacent stepped surfaces (13, 33) to the hub (9),
Boss structure (1, 3).
前記段差面(13)は、前記防振部材(12)に対してモーター本体側に配置される、
請求項1に記載のボス構造(1)。
The step surface (13) is disposed on the motor body side with respect to the vibration isolating member (12).
Boss structure (1) according to claim 1.
前記段差面(33)は、前記防振部材(32)に対してモーター本体と反対側に配置される、
請求項1に記載のボス構造(3)。
The step surface (33) is disposed on the opposite side of the motor body with respect to the vibration isolation member (32).
Boss structure (3) according to claim 1.
請求項1からのいずれかに記載のボス構造(1,3)と、
前記ボス構造と固着されるハブ(9)と、
前記ハブと固着される羽根(51)と、
を備える、
送風機の羽根車(5)。
The boss structure (1, 3) according to any one of claims 1 to 3 ,
A hub (9) secured to the boss structure;
A blade (51) secured to the hub;
Comprising
Blower impeller (5).
請求項1からのいずれかに記載のボス構造(1,3)と、
前記ボス構造と固着されるハブ(9)と、
前記ハブと固着される羽根(51)と、
を備える、
シロッコファン(5)。
The boss structure (1, 3) according to any one of claims 1 to 3 ,
A hub (9) secured to the boss structure;
A blade (51) secured to the hub;
Comprising
Sirocco fan (5).
JP2002074377A 2002-03-18 2002-03-18 Blower impeller boss structure and blower impeller Expired - Fee Related JP3840993B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103527509A (en) * 2012-07-05 2014-01-22 东海橡塑工业株式会社 A draught fan vibration-isolating hub and a manufacturing method of a rotating draught fan

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4063308B1 (en) 2006-11-14 2008-03-19 ダイキン工業株式会社 Boss structure of blower impeller and impeller of blower equipped with the same
JP2012159034A (en) * 2011-01-31 2012-08-23 Tokai Rubber Ind Ltd Vibration control boss for fan

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103527509A (en) * 2012-07-05 2014-01-22 东海橡塑工业株式会社 A draught fan vibration-isolating hub and a manufacturing method of a rotating draught fan

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